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Stephen M. Cameronedd16362009-12-08 14:09:11 -08001/*
2 * Disk Array driver for HP Smart Array SAS controllers
Don Brace1358f6d2015-07-18 11:12:38 -05003 * Copyright 2014-2015 PMC-Sierra, Inc.
4 * Copyright 2000,2009-2015 Hewlett-Packard Development Company, L.P.
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; version 2 of the License.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
13 * NON INFRINGEMENT. See the GNU General Public License for more details.
14 *
Don Brace1358f6d2015-07-18 11:12:38 -050015 * Questions/Comments/Bugfixes to storagedev@pmcs.com
Stephen M. Cameronedd16362009-12-08 14:09:11 -080016 *
17 */
18
19#include <linux/module.h>
20#include <linux/interrupt.h>
21#include <linux/types.h>
22#include <linux/pci.h>
Matthew Garrette5a44df2011-11-11 11:14:23 -050023#include <linux/pci-aspm.h>
Stephen M. Cameronedd16362009-12-08 14:09:11 -080024#include <linux/kernel.h>
25#include <linux/slab.h>
26#include <linux/delay.h>
27#include <linux/fs.h>
28#include <linux/timer.h>
Stephen M. Cameronedd16362009-12-08 14:09:11 -080029#include <linux/init.h>
30#include <linux/spinlock.h>
Stephen M. Cameronedd16362009-12-08 14:09:11 -080031#include <linux/compat.h>
32#include <linux/blktrace_api.h>
33#include <linux/uaccess.h>
34#include <linux/io.h>
35#include <linux/dma-mapping.h>
36#include <linux/completion.h>
37#include <linux/moduleparam.h>
38#include <scsi/scsi.h>
39#include <scsi/scsi_cmnd.h>
40#include <scsi/scsi_device.h>
41#include <scsi/scsi_host.h>
Stephen M. Cameron667e23d2010-02-25 14:02:51 -060042#include <scsi/scsi_tcq.h>
Stephen Cameron9437ac42015-04-23 09:32:16 -050043#include <scsi/scsi_eh.h>
Webb Scales73153fe2015-04-23 09:35:04 -050044#include <scsi/scsi_dbg.h>
Stephen M. Cameronedd16362009-12-08 14:09:11 -080045#include <linux/cciss_ioctl.h>
46#include <linux/string.h>
47#include <linux/bitmap.h>
Arun Sharma600634972011-07-26 16:09:06 -070048#include <linux/atomic.h>
Stephen M. Camerona0c12412011-10-26 16:22:04 -050049#include <linux/jiffies.h>
Don Brace42a91642014-11-14 17:26:27 -060050#include <linux/percpu-defs.h>
Stephen M. Cameron094963d2014-05-29 10:53:18 -050051#include <linux/percpu.h>
Don Brace2b08b3e2015-01-23 16:41:09 -060052#include <asm/unaligned.h>
Stephen M. Cameron283b4a92014-02-18 13:55:33 -060053#include <asm/div64.h>
Stephen M. Cameronedd16362009-12-08 14:09:11 -080054#include "hpsa_cmd.h"
55#include "hpsa.h"
56
57/* HPSA_DRIVER_VERSION must be 3 byte values (0-255) separated by '.' */
Don Bracef532a3f2015-04-23 09:35:33 -050058#define HPSA_DRIVER_VERSION "3.4.10-0"
Stephen M. Cameronedd16362009-12-08 14:09:11 -080059#define DRIVER_NAME "HP HPSA Driver (v " HPSA_DRIVER_VERSION ")"
Stephen M. Cameronf79cfec2012-01-19 14:00:59 -060060#define HPSA "hpsa"
Stephen M. Cameronedd16362009-12-08 14:09:11 -080061
Robert Elliott007e7aa2015-01-23 16:44:56 -060062/* How long to wait for CISS doorbell communication */
63#define CLEAR_EVENT_WAIT_INTERVAL 20 /* ms for each msleep() call */
64#define MODE_CHANGE_WAIT_INTERVAL 10 /* ms for each msleep() call */
65#define MAX_CLEAR_EVENT_WAIT 30000 /* times 20 ms = 600 s */
66#define MAX_MODE_CHANGE_WAIT 2000 /* times 10 ms = 20 s */
Stephen M. Cameronedd16362009-12-08 14:09:11 -080067#define MAX_IOCTL_CONFIG_WAIT 1000
68
69/*define how many times we will try a command because of bus resets */
70#define MAX_CMD_RETRIES 3
71
72/* Embedded module documentation macros - see modules.h */
73MODULE_AUTHOR("Hewlett-Packard Company");
74MODULE_DESCRIPTION("Driver for HP Smart Array Controller version " \
75 HPSA_DRIVER_VERSION);
76MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers");
77MODULE_VERSION(HPSA_DRIVER_VERSION);
78MODULE_LICENSE("GPL");
79
80static int hpsa_allow_any;
81module_param(hpsa_allow_any, int, S_IRUGO|S_IWUSR);
82MODULE_PARM_DESC(hpsa_allow_any,
83 "Allow hpsa driver to access unknown HP Smart Array hardware");
Stephen M. Cameron02ec19c2011-01-06 14:48:29 -060084static int hpsa_simple_mode;
85module_param(hpsa_simple_mode, int, S_IRUGO|S_IWUSR);
86MODULE_PARM_DESC(hpsa_simple_mode,
87 "Use 'simple mode' rather than 'performant mode'");
Stephen M. Cameronedd16362009-12-08 14:09:11 -080088
89/* define the PCI info for the cards we can control */
90static const struct pci_device_id hpsa_pci_device_id[] = {
Stephen M. Cameronedd16362009-12-08 14:09:11 -080091 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3241},
92 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3243},
93 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3245},
94 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3247},
95 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3249},
Mike Miller163dbcd2013-09-04 15:11:10 -050096 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324A},
97 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324B},
Mike Millerf8b01eb2010-02-04 08:42:45 -060098 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3233},
scameron@beardog.cce.hp.com9143a962011-03-07 10:44:16 -060099 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3350},
100 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3351},
101 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3352},
102 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3353},
103 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3354},
104 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3355},
105 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3356},
Mike Millerfe0c9612012-09-20 16:05:18 -0500106 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1921},
107 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1922},
108 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1923},
109 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1924},
Mike Millerfe0c9612012-09-20 16:05:18 -0500110 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1926},
111 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1928},
Mike Miller97b9f532013-09-04 15:05:55 -0500112 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1929},
113 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21BD},
114 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21BE},
115 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21BF},
116 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C0},
117 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C1},
118 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C2},
119 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C3},
120 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C4},
121 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C5},
Joe Handzik3b7a45e2014-05-08 14:27:24 -0500122 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C6},
Mike Miller97b9f532013-09-04 15:05:55 -0500123 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C7},
124 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C8},
125 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C9},
Joe Handzik3b7a45e2014-05-08 14:27:24 -0500126 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CA},
127 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CB},
128 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CC},
129 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CD},
130 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CE},
Don Bracefdfa4b62015-04-23 09:35:27 -0500131 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0580},
Don Bracecbb47dc2015-07-18 11:12:54 -0500132 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0581},
133 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0582},
134 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0583},
135 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0584},
136 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0585},
Stephen M. Cameron8e616a52014-02-18 13:58:02 -0600137 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x0076},
138 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x0087},
139 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x007D},
140 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x0088},
141 {PCI_VENDOR_ID_HP, 0x333f, 0x103c, 0x333f},
Mike Miller7c03b872010-12-01 11:16:07 -0600142 {PCI_VENDOR_ID_HP, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
Stephen M. Cameron6798cc02010-06-16 13:51:20 -0500143 PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0},
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800144 {0,}
145};
146
147MODULE_DEVICE_TABLE(pci, hpsa_pci_device_id);
148
149/* board_id = Subsystem Device ID & Vendor ID
150 * product = Marketing Name for the board
151 * access = Address of the struct of function pointers
152 */
153static struct board_type products[] = {
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800154 {0x3241103C, "Smart Array P212", &SA5_access},
155 {0x3243103C, "Smart Array P410", &SA5_access},
156 {0x3245103C, "Smart Array P410i", &SA5_access},
157 {0x3247103C, "Smart Array P411", &SA5_access},
158 {0x3249103C, "Smart Array P812", &SA5_access},
Mike Miller163dbcd2013-09-04 15:11:10 -0500159 {0x324A103C, "Smart Array P712m", &SA5_access},
160 {0x324B103C, "Smart Array P711m", &SA5_access},
Stephen M. Cameron7d2cce52014-11-14 17:26:38 -0600161 {0x3233103C, "HP StorageWorks 1210m", &SA5_access}, /* alias of 333f */
Mike Millerfe0c9612012-09-20 16:05:18 -0500162 {0x3350103C, "Smart Array P222", &SA5_access},
163 {0x3351103C, "Smart Array P420", &SA5_access},
164 {0x3352103C, "Smart Array P421", &SA5_access},
165 {0x3353103C, "Smart Array P822", &SA5_access},
166 {0x3354103C, "Smart Array P420i", &SA5_access},
167 {0x3355103C, "Smart Array P220i", &SA5_access},
168 {0x3356103C, "Smart Array P721m", &SA5_access},
Mike Miller1fd6c8e2013-09-04 15:08:29 -0500169 {0x1921103C, "Smart Array P830i", &SA5_access},
170 {0x1922103C, "Smart Array P430", &SA5_access},
171 {0x1923103C, "Smart Array P431", &SA5_access},
172 {0x1924103C, "Smart Array P830", &SA5_access},
173 {0x1926103C, "Smart Array P731m", &SA5_access},
174 {0x1928103C, "Smart Array P230i", &SA5_access},
175 {0x1929103C, "Smart Array P530", &SA5_access},
Don Brace27fb8132015-01-23 16:45:07 -0600176 {0x21BD103C, "Smart Array P244br", &SA5_access},
177 {0x21BE103C, "Smart Array P741m", &SA5_access},
178 {0x21BF103C, "Smart HBA H240ar", &SA5_access},
179 {0x21C0103C, "Smart Array P440ar", &SA5_access},
Don Bracec8ae0ab2015-01-23 16:45:12 -0600180 {0x21C1103C, "Smart Array P840ar", &SA5_access},
Don Brace27fb8132015-01-23 16:45:07 -0600181 {0x21C2103C, "Smart Array P440", &SA5_access},
182 {0x21C3103C, "Smart Array P441", &SA5_access},
Mike Miller97b9f532013-09-04 15:05:55 -0500183 {0x21C4103C, "Smart Array", &SA5_access},
Don Brace27fb8132015-01-23 16:45:07 -0600184 {0x21C5103C, "Smart Array P841", &SA5_access},
185 {0x21C6103C, "Smart HBA H244br", &SA5_access},
186 {0x21C7103C, "Smart HBA H240", &SA5_access},
187 {0x21C8103C, "Smart HBA H241", &SA5_access},
Mike Miller97b9f532013-09-04 15:05:55 -0500188 {0x21C9103C, "Smart Array", &SA5_access},
Don Brace27fb8132015-01-23 16:45:07 -0600189 {0x21CA103C, "Smart Array P246br", &SA5_access},
190 {0x21CB103C, "Smart Array P840", &SA5_access},
Joe Handzik3b7a45e2014-05-08 14:27:24 -0500191 {0x21CC103C, "Smart Array", &SA5_access},
192 {0x21CD103C, "Smart Array", &SA5_access},
Don Brace27fb8132015-01-23 16:45:07 -0600193 {0x21CE103C, "Smart HBA", &SA5_access},
Don Bracefdfa4b62015-04-23 09:35:27 -0500194 {0x05809005, "SmartHBA-SA", &SA5_access},
Don Bracecbb47dc2015-07-18 11:12:54 -0500195 {0x05819005, "SmartHBA-SA 8i", &SA5_access},
196 {0x05829005, "SmartHBA-SA 8i8e", &SA5_access},
197 {0x05839005, "SmartHBA-SA 8e", &SA5_access},
198 {0x05849005, "SmartHBA-SA 16i", &SA5_access},
199 {0x05859005, "SmartHBA-SA 4i4e", &SA5_access},
Stephen M. Cameron8e616a52014-02-18 13:58:02 -0600200 {0x00761590, "HP Storage P1224 Array Controller", &SA5_access},
201 {0x00871590, "HP Storage P1224e Array Controller", &SA5_access},
202 {0x007D1590, "HP Storage P1228 Array Controller", &SA5_access},
203 {0x00881590, "HP Storage P1228e Array Controller", &SA5_access},
204 {0x333f103c, "HP StorageWorks 1210m Array Controller", &SA5_access},
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800205 {0xFFFF103C, "Unknown Smart Array", &SA5_access},
206};
207
Webb Scalesa58e7e52015-04-23 09:34:16 -0500208#define SCSI_CMD_BUSY ((struct scsi_cmnd *)&hpsa_cmd_busy)
209static const struct scsi_cmnd hpsa_cmd_busy;
210#define SCSI_CMD_IDLE ((struct scsi_cmnd *)&hpsa_cmd_idle)
211static const struct scsi_cmnd hpsa_cmd_idle;
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800212static int number_of_controllers;
213
Stephen M. Cameron10f66012010-06-16 13:51:50 -0500214static irqreturn_t do_hpsa_intr_intx(int irq, void *dev_id);
215static irqreturn_t do_hpsa_intr_msi(int irq, void *dev_id);
Don Brace42a91642014-11-14 17:26:27 -0600216static int hpsa_ioctl(struct scsi_device *dev, int cmd, void __user *arg);
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800217
218#ifdef CONFIG_COMPAT
Don Brace42a91642014-11-14 17:26:27 -0600219static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd,
220 void __user *arg);
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800221#endif
222
223static void cmd_free(struct ctlr_info *h, struct CommandList *c);
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800224static struct CommandList *cmd_alloc(struct ctlr_info *h);
Webb Scales73153fe2015-04-23 09:35:04 -0500225static void cmd_tagged_free(struct ctlr_info *h, struct CommandList *c);
226static struct CommandList *cmd_tagged_alloc(struct ctlr_info *h,
227 struct scsi_cmnd *scmd);
Stephen M. Camerona2dac132013-02-20 11:24:41 -0600228static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h,
Stephen M. Cameronb7bb24e2014-02-18 13:57:11 -0600229 void *buff, size_t size, u16 page_code, unsigned char *scsi3addr,
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800230 int cmd_type);
Robert Elliott2c143342015-01-23 16:42:48 -0600231static void hpsa_free_cmd_pool(struct ctlr_info *h);
Stephen M. Cameronb7bb24e2014-02-18 13:57:11 -0600232#define VPD_PAGE (1 << 8)
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800233
Jeff Garzikf2812332010-11-16 02:10:29 -0500234static int hpsa_scsi_queue_command(struct Scsi_Host *h, struct scsi_cmnd *cmd);
Stephen M. Camerona08a8472010-02-04 08:43:16 -0600235static void hpsa_scan_start(struct Scsi_Host *);
236static int hpsa_scan_finished(struct Scsi_Host *sh,
237 unsigned long elapsed_time);
Don Brace7c0a0222015-01-23 16:41:30 -0600238static int hpsa_change_queue_depth(struct scsi_device *sdev, int qdepth);
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800239
240static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd);
Stephen M. Cameron75167d22012-05-01 11:42:51 -0500241static int hpsa_eh_abort_handler(struct scsi_cmnd *scsicmd);
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800242static int hpsa_slave_alloc(struct scsi_device *sdev);
Stephen Cameron41ce4c32015-04-23 09:31:47 -0500243static int hpsa_slave_configure(struct scsi_device *sdev);
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800244static void hpsa_slave_destroy(struct scsi_device *sdev);
245
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800246static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno);
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800247static int check_for_unit_attention(struct ctlr_info *h,
248 struct CommandList *c);
249static void check_ioctl_unit_attention(struct ctlr_info *h,
250 struct CommandList *c);
Don Brace303932f2010-02-04 08:42:40 -0600251/* performant mode helper functions */
252static void calc_bucket_map(int *bucket, int num_buckets,
Don Brace2b08b3e2015-01-23 16:41:09 -0600253 int nsgs, int min_blocks, u32 *bucket_map);
Robert Elliott105a3db2015-04-23 09:33:48 -0500254static void hpsa_free_performant_mode(struct ctlr_info *h);
255static int hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h);
Matt Gates254f7962012-05-01 11:43:06 -0500256static inline u32 next_command(struct ctlr_info *h, u8 q);
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -0800257static int hpsa_find_cfg_addrs(struct pci_dev *pdev, void __iomem *vaddr,
258 u32 *cfg_base_addr, u64 *cfg_base_addr_index,
259 u64 *cfg_offset);
260static int hpsa_pci_find_memory_BAR(struct pci_dev *pdev,
261 unsigned long *memory_bar);
262static int hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id);
263static int hpsa_wait_for_board_state(struct pci_dev *pdev, void __iomem *vaddr,
264 int wait_for_ready);
Stephen M. Cameron75167d22012-05-01 11:42:51 -0500265static inline void finish_cmd(struct CommandList *c);
Robert Elliottc706a792015-01-23 16:45:01 -0600266static int hpsa_wait_for_mode_change_ack(struct ctlr_info *h);
Stephen M. Cameronfe5389c2011-01-06 14:48:03 -0600267#define BOARD_NOT_READY 0
268#define BOARD_READY 1
Stephen M. Cameron23100dd2014-02-18 13:57:37 -0600269static void hpsa_drain_accel_commands(struct ctlr_info *h);
Stephen M. Cameron76438d02014-02-18 13:55:43 -0600270static void hpsa_flush_cache(struct ctlr_info *h);
Scott Teelc3497752014-02-18 13:56:34 -0600271static int hpsa_scsi_ioaccel_queue_command(struct ctlr_info *h,
272 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
Don Brace03383732015-01-23 16:43:30 -0600273 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk);
Don Brace080ef1c2015-01-23 16:43:25 -0600274static void hpsa_command_resubmit_worker(struct work_struct *work);
Webb Scales25163bd2015-04-23 09:32:00 -0500275static u32 lockup_detected(struct ctlr_info *h);
276static int detect_controller_lockup(struct ctlr_info *h);
Joe Handzik8270b862015-07-18 11:12:43 -0500277static int is_ext_target(struct ctlr_info *h, struct hpsa_scsi_dev_t *device);
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800278
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800279static inline struct ctlr_info *sdev_to_hba(struct scsi_device *sdev)
280{
281 unsigned long *priv = shost_priv(sdev->host);
282 return (struct ctlr_info *) *priv;
283}
284
Stephen M. Camerona23513e2010-02-04 08:43:11 -0600285static inline struct ctlr_info *shost_to_hba(struct Scsi_Host *sh)
286{
287 unsigned long *priv = shost_priv(sh);
288 return (struct ctlr_info *) *priv;
289}
290
Webb Scalesa58e7e52015-04-23 09:34:16 -0500291static inline bool hpsa_is_cmd_idle(struct CommandList *c)
292{
293 return c->scsi_cmd == SCSI_CMD_IDLE;
294}
295
Webb Scalesd604f532015-04-23 09:35:22 -0500296static inline bool hpsa_is_pending_event(struct CommandList *c)
297{
298 return c->abort_pending || c->reset_pending;
299}
300
Stephen Cameron9437ac42015-04-23 09:32:16 -0500301/* extract sense key, asc, and ascq from sense data. -1 means invalid. */
302static void decode_sense_data(const u8 *sense_data, int sense_data_len,
303 u8 *sense_key, u8 *asc, u8 *ascq)
304{
305 struct scsi_sense_hdr sshdr;
306 bool rc;
307
308 *sense_key = -1;
309 *asc = -1;
310 *ascq = -1;
311
312 if (sense_data_len < 1)
313 return;
314
315 rc = scsi_normalize_sense(sense_data, sense_data_len, &sshdr);
316 if (rc) {
317 *sense_key = sshdr.sense_key;
318 *asc = sshdr.asc;
319 *ascq = sshdr.ascq;
320 }
321}
322
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800323static int check_for_unit_attention(struct ctlr_info *h,
324 struct CommandList *c)
325{
Stephen Cameron9437ac42015-04-23 09:32:16 -0500326 u8 sense_key, asc, ascq;
327 int sense_len;
328
329 if (c->err_info->SenseLen > sizeof(c->err_info->SenseInfo))
330 sense_len = sizeof(c->err_info->SenseInfo);
331 else
332 sense_len = c->err_info->SenseLen;
333
334 decode_sense_data(c->err_info->SenseInfo, sense_len,
335 &sense_key, &asc, &ascq);
Don Brace81c27552015-07-18 11:12:28 -0500336 if (sense_key != UNIT_ATTENTION || asc == 0xff)
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800337 return 0;
338
Stephen Cameron9437ac42015-04-23 09:32:16 -0500339 switch (asc) {
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800340 case STATE_CHANGED:
Stephen Cameron9437ac42015-04-23 09:32:16 -0500341 dev_warn(&h->pdev->dev,
Robert Elliott2946e822015-04-23 09:35:09 -0500342 "%s: a state change detected, command retried\n",
343 h->devname);
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800344 break;
345 case LUN_FAILED:
Stephen M. Cameron7f736952014-11-14 17:26:48 -0600346 dev_warn(&h->pdev->dev,
Robert Elliott2946e822015-04-23 09:35:09 -0500347 "%s: LUN failure detected\n", h->devname);
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800348 break;
349 case REPORT_LUNS_CHANGED:
Stephen M. Cameron7f736952014-11-14 17:26:48 -0600350 dev_warn(&h->pdev->dev,
Robert Elliott2946e822015-04-23 09:35:09 -0500351 "%s: report LUN data changed\n", h->devname);
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800352 /*
Scott Teel4f4eb9f2012-01-19 14:01:25 -0600353 * Note: this REPORT_LUNS_CHANGED condition only occurs on the external
354 * target (array) devices.
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800355 */
356 break;
357 case POWER_OR_RESET:
Robert Elliott2946e822015-04-23 09:35:09 -0500358 dev_warn(&h->pdev->dev,
359 "%s: a power on or device reset detected\n",
360 h->devname);
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800361 break;
362 case UNIT_ATTENTION_CLEARED:
Robert Elliott2946e822015-04-23 09:35:09 -0500363 dev_warn(&h->pdev->dev,
364 "%s: unit attention cleared by another initiator\n",
365 h->devname);
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800366 break;
367 default:
Robert Elliott2946e822015-04-23 09:35:09 -0500368 dev_warn(&h->pdev->dev,
369 "%s: unknown unit attention detected\n",
370 h->devname);
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800371 break;
372 }
373 return 1;
374}
375
Matt Bondurant852af202012-05-01 11:42:35 -0500376static int check_for_busy(struct ctlr_info *h, struct CommandList *c)
377{
378 if (c->err_info->CommandStatus != CMD_TARGET_STATUS ||
379 (c->err_info->ScsiStatus != SAM_STAT_BUSY &&
380 c->err_info->ScsiStatus != SAM_STAT_TASK_SET_FULL))
381 return 0;
382 dev_warn(&h->pdev->dev, HPSA "device busy");
383 return 1;
384}
385
Stephen Camerone985c582015-04-23 09:32:22 -0500386static u32 lockup_detected(struct ctlr_info *h);
387static ssize_t host_show_lockup_detected(struct device *dev,
388 struct device_attribute *attr, char *buf)
389{
390 int ld;
391 struct ctlr_info *h;
392 struct Scsi_Host *shost = class_to_shost(dev);
393
394 h = shost_to_hba(shost);
395 ld = lockup_detected(h);
396
397 return sprintf(buf, "ld=%d\n", ld);
398}
399
Scott Teelda0697b2014-02-18 13:57:00 -0600400static ssize_t host_store_hp_ssd_smart_path_status(struct device *dev,
401 struct device_attribute *attr,
402 const char *buf, size_t count)
403{
404 int status, len;
405 struct ctlr_info *h;
406 struct Scsi_Host *shost = class_to_shost(dev);
407 char tmpbuf[10];
408
409 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
410 return -EACCES;
411 len = count > sizeof(tmpbuf) - 1 ? sizeof(tmpbuf) - 1 : count;
412 strncpy(tmpbuf, buf, len);
413 tmpbuf[len] = '\0';
414 if (sscanf(tmpbuf, "%d", &status) != 1)
415 return -EINVAL;
416 h = shost_to_hba(shost);
417 h->acciopath_status = !!status;
418 dev_warn(&h->pdev->dev,
419 "hpsa: HP SSD Smart Path %s via sysfs update.\n",
420 h->acciopath_status ? "enabled" : "disabled");
421 return count;
422}
423
Stephen M. Cameron2ba8bfc2014-02-18 13:57:52 -0600424static ssize_t host_store_raid_offload_debug(struct device *dev,
425 struct device_attribute *attr,
426 const char *buf, size_t count)
427{
428 int debug_level, len;
429 struct ctlr_info *h;
430 struct Scsi_Host *shost = class_to_shost(dev);
431 char tmpbuf[10];
432
433 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
434 return -EACCES;
435 len = count > sizeof(tmpbuf) - 1 ? sizeof(tmpbuf) - 1 : count;
436 strncpy(tmpbuf, buf, len);
437 tmpbuf[len] = '\0';
438 if (sscanf(tmpbuf, "%d", &debug_level) != 1)
439 return -EINVAL;
440 if (debug_level < 0)
441 debug_level = 0;
442 h = shost_to_hba(shost);
443 h->raid_offload_debug = debug_level;
444 dev_warn(&h->pdev->dev, "hpsa: Set raid_offload_debug level = %d\n",
445 h->raid_offload_debug);
446 return count;
447}
448
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800449static ssize_t host_store_rescan(struct device *dev,
450 struct device_attribute *attr,
451 const char *buf, size_t count)
452{
453 struct ctlr_info *h;
454 struct Scsi_Host *shost = class_to_shost(dev);
Stephen M. Camerona23513e2010-02-04 08:43:11 -0600455 h = shost_to_hba(shost);
Mike Miller31468402010-02-25 14:03:12 -0600456 hpsa_scan_start(h->scsi_host);
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800457 return count;
458}
459
Stephen M. Camerond28ce022010-05-27 15:14:34 -0500460static ssize_t host_show_firmware_revision(struct device *dev,
461 struct device_attribute *attr, char *buf)
462{
463 struct ctlr_info *h;
464 struct Scsi_Host *shost = class_to_shost(dev);
465 unsigned char *fwrev;
466
467 h = shost_to_hba(shost);
468 if (!h->hba_inquiry_data)
469 return 0;
470 fwrev = &h->hba_inquiry_data[32];
471 return snprintf(buf, 20, "%c%c%c%c\n",
472 fwrev[0], fwrev[1], fwrev[2], fwrev[3]);
473}
474
Stephen M. Cameron94a13642011-01-06 14:48:39 -0600475static ssize_t host_show_commands_outstanding(struct device *dev,
476 struct device_attribute *attr, char *buf)
477{
478 struct Scsi_Host *shost = class_to_shost(dev);
479 struct ctlr_info *h = shost_to_hba(shost);
480
Stephen M. Cameron0cbf7682014-11-14 17:27:09 -0600481 return snprintf(buf, 20, "%d\n",
482 atomic_read(&h->commands_outstanding));
Stephen M. Cameron94a13642011-01-06 14:48:39 -0600483}
484
Stephen M. Cameron745a7a22011-02-15 15:32:58 -0600485static ssize_t host_show_transport_mode(struct device *dev,
486 struct device_attribute *attr, char *buf)
487{
488 struct ctlr_info *h;
489 struct Scsi_Host *shost = class_to_shost(dev);
490
491 h = shost_to_hba(shost);
492 return snprintf(buf, 20, "%s\n",
Stephen M. Cameron960a30e2011-02-15 15:33:03 -0600493 h->transMethod & CFGTBL_Trans_Performant ?
Stephen M. Cameron745a7a22011-02-15 15:32:58 -0600494 "performant" : "simple");
495}
496
Scott Teelda0697b2014-02-18 13:57:00 -0600497static ssize_t host_show_hp_ssd_smart_path_status(struct device *dev,
498 struct device_attribute *attr, char *buf)
499{
500 struct ctlr_info *h;
501 struct Scsi_Host *shost = class_to_shost(dev);
502
503 h = shost_to_hba(shost);
504 return snprintf(buf, 30, "HP SSD Smart Path %s\n",
505 (h->acciopath_status == 1) ? "enabled" : "disabled");
506}
507
Stephen M. Cameron46380782011-05-03 15:00:01 -0500508/* List of controllers which cannot be hard reset on kexec with reset_devices */
Stephen M. Cameron941b1cd2011-03-09 17:00:06 -0600509static u32 unresettable_controller[] = {
510 0x324a103C, /* Smart Array P712m */
Stephen Cameron9b5c48c2015-04-23 09:32:06 -0500511 0x324b103C, /* Smart Array P711m */
Stephen M. Cameron941b1cd2011-03-09 17:00:06 -0600512 0x3223103C, /* Smart Array P800 */
513 0x3234103C, /* Smart Array P400 */
514 0x3235103C, /* Smart Array P400i */
515 0x3211103C, /* Smart Array E200i */
516 0x3212103C, /* Smart Array E200 */
517 0x3213103C, /* Smart Array E200i */
518 0x3214103C, /* Smart Array E200i */
519 0x3215103C, /* Smart Array E200i */
520 0x3237103C, /* Smart Array E500 */
521 0x323D103C, /* Smart Array P700m */
Tomas Henzl7af0abb2011-11-28 15:39:55 +0100522 0x40800E11, /* Smart Array 5i */
Stephen M. Cameron941b1cd2011-03-09 17:00:06 -0600523 0x409C0E11, /* Smart Array 6400 */
524 0x409D0E11, /* Smart Array 6400 EM */
Tomas Henzl5a4f9342012-02-14 18:07:59 +0100525 0x40700E11, /* Smart Array 5300 */
526 0x40820E11, /* Smart Array 532 */
527 0x40830E11, /* Smart Array 5312 */
528 0x409A0E11, /* Smart Array 641 */
529 0x409B0E11, /* Smart Array 642 */
530 0x40910E11, /* Smart Array 6i */
Stephen M. Cameron941b1cd2011-03-09 17:00:06 -0600531};
532
Stephen M. Cameron46380782011-05-03 15:00:01 -0500533/* List of controllers which cannot even be soft reset */
534static u32 soft_unresettable_controller[] = {
Tomas Henzl7af0abb2011-11-28 15:39:55 +0100535 0x40800E11, /* Smart Array 5i */
Tomas Henzl5a4f9342012-02-14 18:07:59 +0100536 0x40700E11, /* Smart Array 5300 */
537 0x40820E11, /* Smart Array 532 */
538 0x40830E11, /* Smart Array 5312 */
539 0x409A0E11, /* Smart Array 641 */
540 0x409B0E11, /* Smart Array 642 */
541 0x40910E11, /* Smart Array 6i */
Stephen M. Cameron46380782011-05-03 15:00:01 -0500542 /* Exclude 640x boards. These are two pci devices in one slot
543 * which share a battery backed cache module. One controls the
544 * cache, the other accesses the cache through the one that controls
545 * it. If we reset the one controlling the cache, the other will
546 * likely not be happy. Just forbid resetting this conjoined mess.
547 * The 640x isn't really supported by hpsa anyway.
548 */
549 0x409C0E11, /* Smart Array 6400 */
550 0x409D0E11, /* Smart Array 6400 EM */
551};
552
Stephen Cameron9b5c48c2015-04-23 09:32:06 -0500553static u32 needs_abort_tags_swizzled[] = {
554 0x323D103C, /* Smart Array P700m */
555 0x324a103C, /* Smart Array P712m */
556 0x324b103C, /* SmartArray P711m */
557};
558
559static int board_id_in_array(u32 a[], int nelems, u32 board_id)
Stephen M. Cameron941b1cd2011-03-09 17:00:06 -0600560{
561 int i;
562
Stephen Cameron9b5c48c2015-04-23 09:32:06 -0500563 for (i = 0; i < nelems; i++)
564 if (a[i] == board_id)
565 return 1;
566 return 0;
567}
568
569static int ctlr_is_hard_resettable(u32 board_id)
570{
571 return !board_id_in_array(unresettable_controller,
572 ARRAY_SIZE(unresettable_controller), board_id);
Stephen M. Cameron941b1cd2011-03-09 17:00:06 -0600573}
574
Stephen M. Cameron46380782011-05-03 15:00:01 -0500575static int ctlr_is_soft_resettable(u32 board_id)
576{
Stephen Cameron9b5c48c2015-04-23 09:32:06 -0500577 return !board_id_in_array(soft_unresettable_controller,
578 ARRAY_SIZE(soft_unresettable_controller), board_id);
Stephen M. Cameron46380782011-05-03 15:00:01 -0500579}
580
581static int ctlr_is_resettable(u32 board_id)
582{
583 return ctlr_is_hard_resettable(board_id) ||
584 ctlr_is_soft_resettable(board_id);
585}
586
Stephen Cameron9b5c48c2015-04-23 09:32:06 -0500587static int ctlr_needs_abort_tags_swizzled(u32 board_id)
588{
589 return board_id_in_array(needs_abort_tags_swizzled,
590 ARRAY_SIZE(needs_abort_tags_swizzled), board_id);
591}
592
Stephen M. Cameron941b1cd2011-03-09 17:00:06 -0600593static ssize_t host_show_resettable(struct device *dev,
594 struct device_attribute *attr, char *buf)
595{
596 struct ctlr_info *h;
597 struct Scsi_Host *shost = class_to_shost(dev);
598
599 h = shost_to_hba(shost);
Stephen M. Cameron46380782011-05-03 15:00:01 -0500600 return snprintf(buf, 20, "%d\n", ctlr_is_resettable(h->board_id));
Stephen M. Cameron941b1cd2011-03-09 17:00:06 -0600601}
602
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800603static inline int is_logical_dev_addr_mode(unsigned char scsi3addr[])
604{
605 return (scsi3addr[3] & 0xC0) == 0x40;
606}
607
Robert Elliottf2ef0ce2015-01-23 16:41:35 -0600608static const char * const raid_label[] = { "0", "4", "1(+0)", "5", "5+1", "6",
609 "1(+0)ADM", "UNKNOWN"
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800610};
Scott Teel6b80b182014-02-18 13:56:55 -0600611#define HPSA_RAID_0 0
612#define HPSA_RAID_4 1
613#define HPSA_RAID_1 2 /* also used for RAID 10 */
614#define HPSA_RAID_5 3 /* also used for RAID 50 */
615#define HPSA_RAID_51 4
616#define HPSA_RAID_6 5 /* also used for RAID 60 */
617#define HPSA_RAID_ADM 6 /* also used for RAID 1+0 ADM */
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800618#define RAID_UNKNOWN (ARRAY_SIZE(raid_label) - 1)
619
620static ssize_t raid_level_show(struct device *dev,
621 struct device_attribute *attr, char *buf)
622{
623 ssize_t l = 0;
Stephen M. Cameron82a72c02010-02-04 08:41:38 -0600624 unsigned char rlevel;
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800625 struct ctlr_info *h;
626 struct scsi_device *sdev;
627 struct hpsa_scsi_dev_t *hdev;
628 unsigned long flags;
629
630 sdev = to_scsi_device(dev);
631 h = sdev_to_hba(sdev);
632 spin_lock_irqsave(&h->lock, flags);
633 hdev = sdev->hostdata;
634 if (!hdev) {
635 spin_unlock_irqrestore(&h->lock, flags);
636 return -ENODEV;
637 }
638
639 /* Is this even a logical drive? */
640 if (!is_logical_dev_addr_mode(hdev->scsi3addr)) {
641 spin_unlock_irqrestore(&h->lock, flags);
642 l = snprintf(buf, PAGE_SIZE, "N/A\n");
643 return l;
644 }
645
646 rlevel = hdev->raid_level;
647 spin_unlock_irqrestore(&h->lock, flags);
Stephen M. Cameron82a72c02010-02-04 08:41:38 -0600648 if (rlevel > RAID_UNKNOWN)
Stephen M. Cameronedd16362009-12-08 14:09:11 -0800649 rlevel = RAID_UNKNOWN;
650 l = snprintf(buf, PAGE_SIZE, "RAID %s\n", raid_label[rlevel]);
651 return l;
652}
653
654static ssize_t lunid_show(struct device *dev,
655 struct device_attribute *attr, char *buf)
656{
657 struct ctlr_info *h;
658 struct scsi_device *sdev;
659 struct hpsa_scsi_dev_t *hdev;
660 unsigned long flags;
661 unsigned char lunid[8];
662
663 sdev = to_scsi_device(dev);
664 h = sdev_to_hba(sdev);
665 spin_lock_irqsave(&h->lock, flags);
666 hdev = sdev->hostdata;
667 if (!hdev) {
668 spin_unlock_irqrestore(&h->lock, flags);
669 return -ENODEV;
670 }
671 memcpy(lunid, hdev->scsi3addr, sizeof(lunid));
672 spin_unlock_irqrestore(&h->lock, flags);
673 return snprintf(buf, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
674 lunid[0], lunid[1], lunid[2], lunid[3],
675 lunid[4], lunid[5], lunid[6], lunid[7]);
676}
677
678static ssize_t unique_id_show(struct device *dev,
679 struct device_attribute *attr, char *buf)
680{
681 struct ctlr_info *h;
682 struct scsi_device *sdev;
683 struct hpsa_scsi_dev_t *hdev;
684 unsigned long flags;
685 unsigned char sn[16];
686
687 sdev = to_scsi_device(dev);
688 h = sdev_to_hba(sdev);
689 spin_lock_irqsave(&h->lock, flags);
690 hdev = sdev->hostdata;
691 if (!hdev) {
692 spin_unlock_irqrestore(&h->lock, flags);
693 return -ENODEV;
694 }
695 memcpy(sn, hdev->device_id, sizeof(sn));
696 spin_unlock_irqrestore(&h->lock, flags);
697 return snprintf(buf, 16 * 2 + 2,
698 "%02X%02X%02X%02X%02X%02X%02X%02X"
699 "%02X%02X%02X%02X%02X%02X%02X%02X\n",
700 sn[0], sn[1], sn[2], sn[3],
701 sn[4], sn[5], sn[6], sn[7],
702 sn[8], sn[9], sn[10], sn[11],
703 sn[12], sn[13], sn[14], sn[15]);
704}
705
Scott Teelc1988682014-02-18 13:55:54 -0600706static ssize_t host_show_hp_ssd_smart_path_enabled(struct device *dev,
707 struct device_attribute *attr, char *buf)
708{
709 struct ctlr_info *h;
710 struct scsi_device *sdev;
711 struct hpsa_scsi_dev_t *hdev;
712 unsigned long flags;
713 int offload_enabled;
714
715 sdev = to_scsi_device(dev);
716 h = sdev_to_hba(sdev);
717 spin_lock_irqsave(&h->lock, flags);
718 hdev = sdev->hostdata;
719 if (!hdev) {
720 spin_unlock_irqrestore(&h->lock, flags);
721 return -ENODEV;
722 }
723 offload_enabled = hdev->offload_enabled;
724 spin_unlock_irqrestore(&h->lock, flags);
725 return snprintf(buf, 20, "%d\n", offload_enabled);
726}
727
Joe Handzik8270b862015-07-18 11:12:43 -0500728#define MAX_PATHS 8
729#define PATH_STRING_LEN 50
730
731static ssize_t path_info_show(struct device *dev,
732 struct device_attribute *attr, char *buf)
733{
734 struct ctlr_info *h;
735 struct scsi_device *sdev;
736 struct hpsa_scsi_dev_t *hdev;
737 unsigned long flags;
738 int i;
739 int output_len = 0;
740 u8 box;
741 u8 bay;
742 u8 path_map_index = 0;
743 char *active;
744 unsigned char phys_connector[2];
745 unsigned char path[MAX_PATHS][PATH_STRING_LEN];
746
747 memset(path, 0, MAX_PATHS * PATH_STRING_LEN);
748 sdev = to_scsi_device(dev);
749 h = sdev_to_hba(sdev);
750 spin_lock_irqsave(&h->devlock, flags);
751 hdev = sdev->hostdata;
752 if (!hdev) {
753 spin_unlock_irqrestore(&h->devlock, flags);
754 return -ENODEV;
755 }
756
757 bay = hdev->bay;
758 for (i = 0; i < MAX_PATHS; i++) {
759 path_map_index = 1<<i;
760 if (i == hdev->active_path_index)
761 active = "Active";
762 else if (hdev->path_map & path_map_index)
763 active = "Inactive";
764 else
765 continue;
766
767 output_len = snprintf(path[i],
768 PATH_STRING_LEN, "[%d:%d:%d:%d] %20.20s ",
769 h->scsi_host->host_no,
770 hdev->bus, hdev->target, hdev->lun,
771 scsi_device_type(hdev->devtype));
772
773 if (is_ext_target(h, hdev) ||
774 (hdev->devtype == TYPE_RAID) ||
775 is_logical_dev_addr_mode(hdev->scsi3addr)) {
776 output_len += snprintf(path[i] + output_len,
777 PATH_STRING_LEN, "%s\n",
778 active);
779 continue;
780 }
781
782 box = hdev->box[i];
783 memcpy(&phys_connector, &hdev->phys_connector[i],
784 sizeof(phys_connector));
785 if (phys_connector[0] < '0')
786 phys_connector[0] = '0';
787 if (phys_connector[1] < '0')
788 phys_connector[1] = '0';
789 if (hdev->phys_connector[i] > 0)
790 output_len += snprintf(path[i] + output_len,
791 PATH_STRING_LEN,
792 "PORT: %.2s ",
793 phys_connector);
Kevin Barnettb9092b72015-07-18 11:12:59 -0500794 if (hdev->devtype == TYPE_DISK &&
795 hdev->expose_state != HPSA_DO_NOT_EXPOSE) {
Joe Handzik8270b862015-07-18 11:12:43 -0500796 if (box == 0 || box == 0xFF) {
797 output_len += snprintf(path[i] + output_len,
798 PATH_STRING_LEN,
799 "BAY: %hhu %s\n",
800 bay, active);
801 } else {
802 output_len += snprintf(path[i] + output_len,
803 PATH_STRING_LEN,
804 "BOX: %hhu BAY: %hhu %s\n",
805 box, bay, active);
806 }
807 } else if (box != 0 && box != 0xFF) {
808 output_len += snprintf(path[i] + output_len,
809 PATH_STRING_LEN, "BOX: %hhu %s\n",
810 box, active);
811 } else
812 output_len += snprintf(path[i] + output_len,
813 PATH_STRING_LEN, "%s\n", active);
814 }
815
816 spin_unlock_irqrestore(&h->devlock, flags);
817 return snprintf(buf, output_len+1, "%s%s%s%s%s%s%s%s",
818 path[0], path[1], path[2], path[3],
819 path[4], path[5], path[6], path[7]);
820}
821
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600822static DEVICE_ATTR(raid_level, S_IRUGO, raid_level_show, NULL);
823static DEVICE_ATTR(lunid, S_IRUGO, lunid_show, NULL);
824static DEVICE_ATTR(unique_id, S_IRUGO, unique_id_show, NULL);
825static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan);
Scott Teelc1988682014-02-18 13:55:54 -0600826static DEVICE_ATTR(hp_ssd_smart_path_enabled, S_IRUGO,
827 host_show_hp_ssd_smart_path_enabled, NULL);
Joe Handzik8270b862015-07-18 11:12:43 -0500828static DEVICE_ATTR(path_info, S_IRUGO, path_info_show, NULL);
Scott Teelda0697b2014-02-18 13:57:00 -0600829static DEVICE_ATTR(hp_ssd_smart_path_status, S_IWUSR|S_IRUGO|S_IROTH,
830 host_show_hp_ssd_smart_path_status,
831 host_store_hp_ssd_smart_path_status);
Stephen M. Cameron2ba8bfc2014-02-18 13:57:52 -0600832static DEVICE_ATTR(raid_offload_debug, S_IWUSR, NULL,
833 host_store_raid_offload_debug);
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600834static DEVICE_ATTR(firmware_revision, S_IRUGO,
835 host_show_firmware_revision, NULL);
836static DEVICE_ATTR(commands_outstanding, S_IRUGO,
837 host_show_commands_outstanding, NULL);
838static DEVICE_ATTR(transport_mode, S_IRUGO,
839 host_show_transport_mode, NULL);
Stephen M. Cameron941b1cd2011-03-09 17:00:06 -0600840static DEVICE_ATTR(resettable, S_IRUGO,
841 host_show_resettable, NULL);
Stephen Camerone985c582015-04-23 09:32:22 -0500842static DEVICE_ATTR(lockup_detected, S_IRUGO,
843 host_show_lockup_detected, NULL);
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600844
845static struct device_attribute *hpsa_sdev_attrs[] = {
846 &dev_attr_raid_level,
847 &dev_attr_lunid,
848 &dev_attr_unique_id,
Scott Teelc1988682014-02-18 13:55:54 -0600849 &dev_attr_hp_ssd_smart_path_enabled,
Joe Handzik8270b862015-07-18 11:12:43 -0500850 &dev_attr_path_info,
Stephen Camerone985c582015-04-23 09:32:22 -0500851 &dev_attr_lockup_detected,
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600852 NULL,
853};
854
855static struct device_attribute *hpsa_shost_attrs[] = {
856 &dev_attr_rescan,
857 &dev_attr_firmware_revision,
858 &dev_attr_commands_outstanding,
859 &dev_attr_transport_mode,
Stephen M. Cameron941b1cd2011-03-09 17:00:06 -0600860 &dev_attr_resettable,
Scott Teelda0697b2014-02-18 13:57:00 -0600861 &dev_attr_hp_ssd_smart_path_status,
Stephen M. Cameron2ba8bfc2014-02-18 13:57:52 -0600862 &dev_attr_raid_offload_debug,
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600863 NULL,
864};
865
Stephen Cameron41ce4c32015-04-23 09:31:47 -0500866#define HPSA_NRESERVED_CMDS (HPSA_CMDS_RESERVED_FOR_ABORTS + \
867 HPSA_CMDS_RESERVED_FOR_DRIVER + HPSA_MAX_CONCURRENT_PASSTHRUS)
868
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600869static struct scsi_host_template hpsa_driver_template = {
870 .module = THIS_MODULE,
Stephen M. Cameronf79cfec2012-01-19 14:00:59 -0600871 .name = HPSA,
872 .proc_name = HPSA,
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600873 .queuecommand = hpsa_scsi_queue_command,
874 .scan_start = hpsa_scan_start,
875 .scan_finished = hpsa_scan_finished,
Don Brace7c0a0222015-01-23 16:41:30 -0600876 .change_queue_depth = hpsa_change_queue_depth,
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600877 .this_id = -1,
878 .use_clustering = ENABLE_CLUSTERING,
Stephen M. Cameron75167d22012-05-01 11:42:51 -0500879 .eh_abort_handler = hpsa_eh_abort_handler,
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600880 .eh_device_reset_handler = hpsa_eh_device_reset_handler,
881 .ioctl = hpsa_ioctl,
882 .slave_alloc = hpsa_slave_alloc,
Stephen Cameron41ce4c32015-04-23 09:31:47 -0500883 .slave_configure = hpsa_slave_configure,
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600884 .slave_destroy = hpsa_slave_destroy,
885#ifdef CONFIG_COMPAT
886 .compat_ioctl = hpsa_compat_ioctl,
887#endif
888 .sdev_attrs = hpsa_sdev_attrs,
889 .shost_attrs = hpsa_shost_attrs,
Stephen M. Cameronc0d6a4d2011-10-26 16:20:53 -0500890 .max_sectors = 8192,
Martin K. Petersen54b2b502013-10-23 06:25:40 -0400891 .no_write_same = 1,
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600892};
893
Matt Gates254f7962012-05-01 11:43:06 -0500894static inline u32 next_command(struct ctlr_info *h, u8 q)
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600895{
896 u32 a;
Stephen M. Cameron072b0512014-05-29 10:53:07 -0500897 struct reply_queue_buffer *rq = &h->reply_queue[q];
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600898
Matt Gatese1f7de02014-02-18 13:55:17 -0600899 if (h->transMethod & CFGTBL_Trans_io_accel1)
900 return h->access.command_completed(h, q);
901
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600902 if (unlikely(!(h->transMethod & CFGTBL_Trans_Performant)))
Matt Gates254f7962012-05-01 11:43:06 -0500903 return h->access.command_completed(h, q);
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600904
Matt Gates254f7962012-05-01 11:43:06 -0500905 if ((rq->head[rq->current_entry] & 1) == rq->wraparound) {
906 a = rq->head[rq->current_entry];
907 rq->current_entry++;
Stephen M. Cameron0cbf7682014-11-14 17:27:09 -0600908 atomic_dec(&h->commands_outstanding);
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600909 } else {
910 a = FIFO_EMPTY;
911 }
912 /* Check for wraparound */
Matt Gates254f7962012-05-01 11:43:06 -0500913 if (rq->current_entry == h->max_commands) {
914 rq->current_entry = 0;
915 rq->wraparound ^= 1;
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600916 }
917 return a;
918}
919
Scott Teelc3497752014-02-18 13:56:34 -0600920/*
921 * There are some special bits in the bus address of the
922 * command that we have to set for the controller to know
923 * how to process the command:
924 *
925 * Normal performant mode:
926 * bit 0: 1 means performant mode, 0 means simple mode.
927 * bits 1-3 = block fetch table entry
928 * bits 4-6 = command type (== 0)
929 *
930 * ioaccel1 mode:
931 * bit 0 = "performant mode" bit.
932 * bits 1-3 = block fetch table entry
933 * bits 4-6 = command type (== 110)
934 * (command type is needed because ioaccel1 mode
935 * commands are submitted through the same register as normal
936 * mode commands, so this is how the controller knows whether
937 * the command is normal mode or ioaccel1 mode.)
938 *
939 * ioaccel2 mode:
940 * bit 0 = "performant mode" bit.
941 * bits 1-4 = block fetch table entry (note extra bit)
942 * bits 4-6 = not needed, because ioaccel2 mode has
943 * a separate special register for submitting commands.
944 */
945
Webb Scales25163bd2015-04-23 09:32:00 -0500946/*
947 * set_performant_mode: Modify the tag for cciss performant
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600948 * set bit 0 for pull model, bits 3-1 for block fetch
949 * register number
950 */
Webb Scales25163bd2015-04-23 09:32:00 -0500951#define DEFAULT_REPLY_QUEUE (-1)
952static void set_performant_mode(struct ctlr_info *h, struct CommandList *c,
953 int reply_queue)
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600954{
Matt Gates254f7962012-05-01 11:43:06 -0500955 if (likely(h->transMethod & CFGTBL_Trans_Performant)) {
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600956 c->busaddr |= 1 | (h->blockFetchTable[c->Header.SGList] << 1);
Webb Scales25163bd2015-04-23 09:32:00 -0500957 if (unlikely(!h->msix_vector))
958 return;
959 if (likely(reply_queue == DEFAULT_REPLY_QUEUE))
Matt Gates254f7962012-05-01 11:43:06 -0500960 c->Header.ReplyQueue =
John Kacur804a5cb2013-07-26 16:06:18 +0200961 raw_smp_processor_id() % h->nreply_queues;
Webb Scales25163bd2015-04-23 09:32:00 -0500962 else
963 c->Header.ReplyQueue = reply_queue % h->nreply_queues;
Matt Gates254f7962012-05-01 11:43:06 -0500964 }
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -0600965}
966
Scott Teelc3497752014-02-18 13:56:34 -0600967static void set_ioaccel1_performant_mode(struct ctlr_info *h,
Webb Scales25163bd2015-04-23 09:32:00 -0500968 struct CommandList *c,
969 int reply_queue)
Scott Teelc3497752014-02-18 13:56:34 -0600970{
971 struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[c->cmdindex];
972
Webb Scales25163bd2015-04-23 09:32:00 -0500973 /*
974 * Tell the controller to post the reply to the queue for this
Scott Teelc3497752014-02-18 13:56:34 -0600975 * processor. This seems to give the best I/O throughput.
976 */
Webb Scales25163bd2015-04-23 09:32:00 -0500977 if (likely(reply_queue == DEFAULT_REPLY_QUEUE))
978 cp->ReplyQueue = smp_processor_id() % h->nreply_queues;
979 else
980 cp->ReplyQueue = reply_queue % h->nreply_queues;
981 /*
982 * Set the bits in the address sent down to include:
Scott Teelc3497752014-02-18 13:56:34 -0600983 * - performant mode bit (bit 0)
984 * - pull count (bits 1-3)
985 * - command type (bits 4-6)
986 */
987 c->busaddr |= 1 | (h->ioaccel1_blockFetchTable[c->Header.SGList] << 1) |
988 IOACCEL1_BUSADDR_CMDTYPE;
989}
990
Stephen Cameron8be986c2015-04-23 09:34:06 -0500991static void set_ioaccel2_tmf_performant_mode(struct ctlr_info *h,
992 struct CommandList *c,
993 int reply_queue)
994{
995 struct hpsa_tmf_struct *cp = (struct hpsa_tmf_struct *)
996 &h->ioaccel2_cmd_pool[c->cmdindex];
997
998 /* Tell the controller to post the reply to the queue for this
999 * processor. This seems to give the best I/O throughput.
1000 */
1001 if (likely(reply_queue == DEFAULT_REPLY_QUEUE))
1002 cp->reply_queue = smp_processor_id() % h->nreply_queues;
1003 else
1004 cp->reply_queue = reply_queue % h->nreply_queues;
1005 /* Set the bits in the address sent down to include:
1006 * - performant mode bit not used in ioaccel mode 2
1007 * - pull count (bits 0-3)
1008 * - command type isn't needed for ioaccel2
1009 */
1010 c->busaddr |= h->ioaccel2_blockFetchTable[0];
1011}
1012
Scott Teelc3497752014-02-18 13:56:34 -06001013static void set_ioaccel2_performant_mode(struct ctlr_info *h,
Webb Scales25163bd2015-04-23 09:32:00 -05001014 struct CommandList *c,
1015 int reply_queue)
Scott Teelc3497752014-02-18 13:56:34 -06001016{
1017 struct io_accel2_cmd *cp = &h->ioaccel2_cmd_pool[c->cmdindex];
1018
Webb Scales25163bd2015-04-23 09:32:00 -05001019 /*
1020 * Tell the controller to post the reply to the queue for this
Scott Teelc3497752014-02-18 13:56:34 -06001021 * processor. This seems to give the best I/O throughput.
1022 */
Webb Scales25163bd2015-04-23 09:32:00 -05001023 if (likely(reply_queue == DEFAULT_REPLY_QUEUE))
1024 cp->reply_queue = smp_processor_id() % h->nreply_queues;
1025 else
1026 cp->reply_queue = reply_queue % h->nreply_queues;
1027 /*
1028 * Set the bits in the address sent down to include:
Scott Teelc3497752014-02-18 13:56:34 -06001029 * - performant mode bit not used in ioaccel mode 2
1030 * - pull count (bits 0-3)
1031 * - command type isn't needed for ioaccel2
1032 */
1033 c->busaddr |= (h->ioaccel2_blockFetchTable[cp->sg_count]);
1034}
1035
Stephen M. Camerone85c5972012-05-01 11:43:42 -05001036static int is_firmware_flash_cmd(u8 *cdb)
1037{
1038 return cdb[0] == BMIC_WRITE && cdb[6] == BMIC_FLASH_FIRMWARE;
1039}
1040
1041/*
1042 * During firmware flash, the heartbeat register may not update as frequently
1043 * as it should. So we dial down lockup detection during firmware flash. and
1044 * dial it back up when firmware flash completes.
1045 */
1046#define HEARTBEAT_SAMPLE_INTERVAL_DURING_FLASH (240 * HZ)
1047#define HEARTBEAT_SAMPLE_INTERVAL (30 * HZ)
1048static void dial_down_lockup_detection_during_fw_flash(struct ctlr_info *h,
1049 struct CommandList *c)
1050{
1051 if (!is_firmware_flash_cmd(c->Request.CDB))
1052 return;
1053 atomic_inc(&h->firmware_flash_in_progress);
1054 h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL_DURING_FLASH;
1055}
1056
1057static void dial_up_lockup_detection_on_fw_flash_complete(struct ctlr_info *h,
1058 struct CommandList *c)
1059{
1060 if (is_firmware_flash_cmd(c->Request.CDB) &&
1061 atomic_dec_and_test(&h->firmware_flash_in_progress))
1062 h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL;
1063}
1064
Webb Scales25163bd2015-04-23 09:32:00 -05001065static void __enqueue_cmd_and_start_io(struct ctlr_info *h,
1066 struct CommandList *c, int reply_queue)
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -06001067{
Stephen Cameronc05e8862015-01-23 16:44:40 -06001068 dial_down_lockup_detection_during_fw_flash(h, c);
1069 atomic_inc(&h->commands_outstanding);
Scott Teelc3497752014-02-18 13:56:34 -06001070 switch (c->cmd_type) {
1071 case CMD_IOACCEL1:
Webb Scales25163bd2015-04-23 09:32:00 -05001072 set_ioaccel1_performant_mode(h, c, reply_queue);
Stephen Cameronc05e8862015-01-23 16:44:40 -06001073 writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET);
Scott Teelc3497752014-02-18 13:56:34 -06001074 break;
1075 case CMD_IOACCEL2:
Webb Scales25163bd2015-04-23 09:32:00 -05001076 set_ioaccel2_performant_mode(h, c, reply_queue);
Stephen Cameronc05e8862015-01-23 16:44:40 -06001077 writel(c->busaddr, h->vaddr + IOACCEL2_INBOUND_POSTQ_32);
Scott Teelc3497752014-02-18 13:56:34 -06001078 break;
Stephen Cameron8be986c2015-04-23 09:34:06 -05001079 case IOACCEL2_TMF:
1080 set_ioaccel2_tmf_performant_mode(h, c, reply_queue);
1081 writel(c->busaddr, h->vaddr + IOACCEL2_INBOUND_POSTQ_32);
1082 break;
Scott Teelc3497752014-02-18 13:56:34 -06001083 default:
Webb Scales25163bd2015-04-23 09:32:00 -05001084 set_performant_mode(h, c, reply_queue);
Stephen Cameronc05e8862015-01-23 16:44:40 -06001085 h->access.submit_command(h, c);
Scott Teelc3497752014-02-18 13:56:34 -06001086 }
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -06001087}
1088
Webb Scalesa58e7e52015-04-23 09:34:16 -05001089static void enqueue_cmd_and_start_io(struct ctlr_info *h, struct CommandList *c)
Webb Scales25163bd2015-04-23 09:32:00 -05001090{
Webb Scalesd604f532015-04-23 09:35:22 -05001091 if (unlikely(hpsa_is_pending_event(c)))
Webb Scalesa58e7e52015-04-23 09:34:16 -05001092 return finish_cmd(c);
1093
Webb Scales25163bd2015-04-23 09:32:00 -05001094 __enqueue_cmd_and_start_io(h, c, DEFAULT_REPLY_QUEUE);
1095}
1096
Stephen M. Cameron3f5eac32011-03-09 17:00:01 -06001097static inline int is_hba_lunid(unsigned char scsi3addr[])
1098{
1099 return memcmp(scsi3addr, RAID_CTLR_LUNID, 8) == 0;
1100}
1101
1102static inline int is_scsi_rev_5(struct ctlr_info *h)
1103{
1104 if (!h->hba_inquiry_data)
1105 return 0;
1106 if ((h->hba_inquiry_data[2] & 0x07) == 5)
1107 return 1;
1108 return 0;
1109}
1110
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001111static int hpsa_find_target_lun(struct ctlr_info *h,
1112 unsigned char scsi3addr[], int bus, int *target, int *lun)
1113{
1114 /* finds an unused bus, target, lun for a new physical device
1115 * assumes h->devlock is held
1116 */
1117 int i, found = 0;
Scott Teelcfe5bad2011-10-26 16:21:07 -05001118 DECLARE_BITMAP(lun_taken, HPSA_MAX_DEVICES);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001119
Akinobu Mita263d9402012-01-21 00:15:27 +09001120 bitmap_zero(lun_taken, HPSA_MAX_DEVICES);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001121
1122 for (i = 0; i < h->ndevices; i++) {
1123 if (h->dev[i]->bus == bus && h->dev[i]->target != -1)
Akinobu Mita263d9402012-01-21 00:15:27 +09001124 __set_bit(h->dev[i]->target, lun_taken);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001125 }
1126
Akinobu Mita263d9402012-01-21 00:15:27 +09001127 i = find_first_zero_bit(lun_taken, HPSA_MAX_DEVICES);
1128 if (i < HPSA_MAX_DEVICES) {
1129 /* *bus = 1; */
1130 *target = i;
1131 *lun = 0;
1132 found = 1;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001133 }
1134 return !found;
1135}
1136
Webb Scales0d96ef52015-04-23 09:31:55 -05001137static inline void hpsa_show_dev_msg(const char *level, struct ctlr_info *h,
1138 struct hpsa_scsi_dev_t *dev, char *description)
1139{
1140 dev_printk(level, &h->pdev->dev,
1141 "scsi %d:%d:%d:%d: %s %s %.8s %.16s RAID-%s SSDSmartPathCap%c En%c Exp=%d\n",
1142 h->scsi_host->host_no, dev->bus, dev->target, dev->lun,
1143 description,
1144 scsi_device_type(dev->devtype),
1145 dev->vendor,
1146 dev->model,
1147 dev->raid_level > RAID_UNKNOWN ?
1148 "RAID-?" : raid_label[dev->raid_level],
1149 dev->offload_config ? '+' : '-',
1150 dev->offload_enabled ? '+' : '-',
1151 dev->expose_state);
1152}
1153
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001154/* Add an entry into h->dev[] array. */
1155static int hpsa_scsi_add_entry(struct ctlr_info *h, int hostno,
1156 struct hpsa_scsi_dev_t *device,
1157 struct hpsa_scsi_dev_t *added[], int *nadded)
1158{
1159 /* assumes h->devlock is held */
1160 int n = h->ndevices;
1161 int i;
1162 unsigned char addr1[8], addr2[8];
1163 struct hpsa_scsi_dev_t *sd;
1164
Scott Teelcfe5bad2011-10-26 16:21:07 -05001165 if (n >= HPSA_MAX_DEVICES) {
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001166 dev_err(&h->pdev->dev, "too many devices, some will be "
1167 "inaccessible.\n");
1168 return -1;
1169 }
1170
1171 /* physical devices do not have lun or target assigned until now. */
1172 if (device->lun != -1)
1173 /* Logical device, lun is already assigned. */
1174 goto lun_assigned;
1175
1176 /* If this device a non-zero lun of a multi-lun device
1177 * byte 4 of the 8-byte LUN addr will contain the logical
Don Brace2b08b3e2015-01-23 16:41:09 -06001178 * unit no, zero otherwise.
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001179 */
1180 if (device->scsi3addr[4] == 0) {
1181 /* This is not a non-zero lun of a multi-lun device */
1182 if (hpsa_find_target_lun(h, device->scsi3addr,
1183 device->bus, &device->target, &device->lun) != 0)
1184 return -1;
1185 goto lun_assigned;
1186 }
1187
1188 /* This is a non-zero lun of a multi-lun device.
1189 * Search through our list and find the device which
shane.seymour9a4178b2015-07-18 11:13:09 -05001190 * has the same 8 byte LUN address, excepting byte 4 and 5.
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001191 * Assign the same bus and target for this new LUN.
1192 * Use the logical unit number from the firmware.
1193 */
1194 memcpy(addr1, device->scsi3addr, 8);
1195 addr1[4] = 0;
shane.seymour9a4178b2015-07-18 11:13:09 -05001196 addr1[5] = 0;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001197 for (i = 0; i < n; i++) {
1198 sd = h->dev[i];
1199 memcpy(addr2, sd->scsi3addr, 8);
1200 addr2[4] = 0;
shane.seymour9a4178b2015-07-18 11:13:09 -05001201 addr2[5] = 0;
1202 /* differ only in byte 4 and 5? */
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001203 if (memcmp(addr1, addr2, 8) == 0) {
1204 device->bus = sd->bus;
1205 device->target = sd->target;
1206 device->lun = device->scsi3addr[4];
1207 break;
1208 }
1209 }
1210 if (device->lun == -1) {
1211 dev_warn(&h->pdev->dev, "physical device with no LUN=0,"
1212 " suspect firmware bug or unsupported hardware "
1213 "configuration.\n");
1214 return -1;
1215 }
1216
1217lun_assigned:
1218
1219 h->dev[n] = device;
1220 h->ndevices++;
1221 added[*nadded] = device;
1222 (*nadded)++;
Webb Scales0d96ef52015-04-23 09:31:55 -05001223 hpsa_show_dev_msg(KERN_INFO, h, device,
1224 device->expose_state & HPSA_SCSI_ADD ? "added" : "masked");
Robert Elliotta473d862015-04-23 09:32:54 -05001225 device->offload_to_be_enabled = device->offload_enabled;
1226 device->offload_enabled = 0;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001227 return 0;
1228}
1229
Scott Teelbd9244f2012-01-19 14:01:30 -06001230/* Update an entry in h->dev[] array. */
1231static void hpsa_scsi_update_entry(struct ctlr_info *h, int hostno,
1232 int entry, struct hpsa_scsi_dev_t *new_entry)
1233{
Robert Elliotta473d862015-04-23 09:32:54 -05001234 int offload_enabled;
Scott Teelbd9244f2012-01-19 14:01:30 -06001235 /* assumes h->devlock is held */
1236 BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES);
1237
1238 /* Raid level changed. */
1239 h->dev[entry]->raid_level = new_entry->raid_level;
Stephen M. Cameron250fb122014-02-18 13:55:38 -06001240
Don Brace03383732015-01-23 16:43:30 -06001241 /* Raid offload parameters changed. Careful about the ordering. */
1242 if (new_entry->offload_config && new_entry->offload_enabled) {
1243 /*
1244 * if drive is newly offload_enabled, we want to copy the
1245 * raid map data first. If previously offload_enabled and
1246 * offload_config were set, raid map data had better be
1247 * the same as it was before. if raid map data is changed
1248 * then it had better be the case that
1249 * h->dev[entry]->offload_enabled is currently 0.
1250 */
1251 h->dev[entry]->raid_map = new_entry->raid_map;
1252 h->dev[entry]->ioaccel_handle = new_entry->ioaccel_handle;
Don Brace03383732015-01-23 16:43:30 -06001253 }
Joe Handzika3144e02015-04-23 09:32:59 -05001254 if (new_entry->hba_ioaccel_enabled) {
1255 h->dev[entry]->ioaccel_handle = new_entry->ioaccel_handle;
1256 wmb(); /* set ioaccel_handle *before* hba_ioaccel_enabled */
1257 }
1258 h->dev[entry]->hba_ioaccel_enabled = new_entry->hba_ioaccel_enabled;
Stephen M. Cameron250fb122014-02-18 13:55:38 -06001259 h->dev[entry]->offload_config = new_entry->offload_config;
Stephen M. Cameron9fb0de22014-02-18 13:56:50 -06001260 h->dev[entry]->offload_to_mirror = new_entry->offload_to_mirror;
Don Brace03383732015-01-23 16:43:30 -06001261 h->dev[entry]->queue_depth = new_entry->queue_depth;
Stephen M. Cameron250fb122014-02-18 13:55:38 -06001262
Stephen Cameron41ce4c32015-04-23 09:31:47 -05001263 /*
1264 * We can turn off ioaccel offload now, but need to delay turning
1265 * it on until we can update h->dev[entry]->phys_disk[], but we
1266 * can't do that until all the devices are updated.
1267 */
1268 h->dev[entry]->offload_to_be_enabled = new_entry->offload_enabled;
1269 if (!new_entry->offload_enabled)
1270 h->dev[entry]->offload_enabled = 0;
1271
Robert Elliotta473d862015-04-23 09:32:54 -05001272 offload_enabled = h->dev[entry]->offload_enabled;
1273 h->dev[entry]->offload_enabled = h->dev[entry]->offload_to_be_enabled;
Webb Scales0d96ef52015-04-23 09:31:55 -05001274 hpsa_show_dev_msg(KERN_INFO, h, h->dev[entry], "updated");
Robert Elliotta473d862015-04-23 09:32:54 -05001275 h->dev[entry]->offload_enabled = offload_enabled;
Scott Teelbd9244f2012-01-19 14:01:30 -06001276}
1277
Stephen M. Cameron2a8ccf32010-02-04 08:43:41 -06001278/* Replace an entry from h->dev[] array. */
1279static void hpsa_scsi_replace_entry(struct ctlr_info *h, int hostno,
1280 int entry, struct hpsa_scsi_dev_t *new_entry,
1281 struct hpsa_scsi_dev_t *added[], int *nadded,
1282 struct hpsa_scsi_dev_t *removed[], int *nremoved)
1283{
1284 /* assumes h->devlock is held */
Scott Teelcfe5bad2011-10-26 16:21:07 -05001285 BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES);
Stephen M. Cameron2a8ccf32010-02-04 08:43:41 -06001286 removed[*nremoved] = h->dev[entry];
1287 (*nremoved)++;
Stephen M. Cameron01350d02011-08-09 08:18:01 -05001288
1289 /*
1290 * New physical devices won't have target/lun assigned yet
1291 * so we need to preserve the values in the slot we are replacing.
1292 */
1293 if (new_entry->target == -1) {
1294 new_entry->target = h->dev[entry]->target;
1295 new_entry->lun = h->dev[entry]->lun;
1296 }
1297
Stephen M. Cameron2a8ccf32010-02-04 08:43:41 -06001298 h->dev[entry] = new_entry;
1299 added[*nadded] = new_entry;
1300 (*nadded)++;
Webb Scales0d96ef52015-04-23 09:31:55 -05001301 hpsa_show_dev_msg(KERN_INFO, h, new_entry, "replaced");
Robert Elliotta473d862015-04-23 09:32:54 -05001302 new_entry->offload_to_be_enabled = new_entry->offload_enabled;
1303 new_entry->offload_enabled = 0;
Stephen M. Cameron2a8ccf32010-02-04 08:43:41 -06001304}
1305
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001306/* Remove an entry from h->dev[] array. */
1307static void hpsa_scsi_remove_entry(struct ctlr_info *h, int hostno, int entry,
1308 struct hpsa_scsi_dev_t *removed[], int *nremoved)
1309{
1310 /* assumes h->devlock is held */
1311 int i;
1312 struct hpsa_scsi_dev_t *sd;
1313
Scott Teelcfe5bad2011-10-26 16:21:07 -05001314 BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001315
1316 sd = h->dev[entry];
1317 removed[*nremoved] = h->dev[entry];
1318 (*nremoved)++;
1319
1320 for (i = entry; i < h->ndevices-1; i++)
1321 h->dev[i] = h->dev[i+1];
1322 h->ndevices--;
Webb Scales0d96ef52015-04-23 09:31:55 -05001323 hpsa_show_dev_msg(KERN_INFO, h, sd, "removed");
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001324}
1325
1326#define SCSI3ADDR_EQ(a, b) ( \
1327 (a)[7] == (b)[7] && \
1328 (a)[6] == (b)[6] && \
1329 (a)[5] == (b)[5] && \
1330 (a)[4] == (b)[4] && \
1331 (a)[3] == (b)[3] && \
1332 (a)[2] == (b)[2] && \
1333 (a)[1] == (b)[1] && \
1334 (a)[0] == (b)[0])
1335
1336static void fixup_botched_add(struct ctlr_info *h,
1337 struct hpsa_scsi_dev_t *added)
1338{
1339 /* called when scsi_add_device fails in order to re-adjust
1340 * h->dev[] to match the mid layer's view.
1341 */
1342 unsigned long flags;
1343 int i, j;
1344
1345 spin_lock_irqsave(&h->lock, flags);
1346 for (i = 0; i < h->ndevices; i++) {
1347 if (h->dev[i] == added) {
1348 for (j = i; j < h->ndevices-1; j++)
1349 h->dev[j] = h->dev[j+1];
1350 h->ndevices--;
1351 break;
1352 }
1353 }
1354 spin_unlock_irqrestore(&h->lock, flags);
1355 kfree(added);
1356}
1357
1358static inline int device_is_the_same(struct hpsa_scsi_dev_t *dev1,
1359 struct hpsa_scsi_dev_t *dev2)
1360{
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001361 /* we compare everything except lun and target as these
1362 * are not yet assigned. Compare parts likely
1363 * to differ first
1364 */
1365 if (memcmp(dev1->scsi3addr, dev2->scsi3addr,
1366 sizeof(dev1->scsi3addr)) != 0)
1367 return 0;
1368 if (memcmp(dev1->device_id, dev2->device_id,
1369 sizeof(dev1->device_id)) != 0)
1370 return 0;
1371 if (memcmp(dev1->model, dev2->model, sizeof(dev1->model)) != 0)
1372 return 0;
1373 if (memcmp(dev1->vendor, dev2->vendor, sizeof(dev1->vendor)) != 0)
1374 return 0;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001375 if (dev1->devtype != dev2->devtype)
1376 return 0;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001377 if (dev1->bus != dev2->bus)
1378 return 0;
1379 return 1;
1380}
1381
Scott Teelbd9244f2012-01-19 14:01:30 -06001382static inline int device_updated(struct hpsa_scsi_dev_t *dev1,
1383 struct hpsa_scsi_dev_t *dev2)
1384{
1385 /* Device attributes that can change, but don't mean
1386 * that the device is a different device, nor that the OS
1387 * needs to be told anything about the change.
1388 */
1389 if (dev1->raid_level != dev2->raid_level)
1390 return 1;
Stephen M. Cameron250fb122014-02-18 13:55:38 -06001391 if (dev1->offload_config != dev2->offload_config)
1392 return 1;
1393 if (dev1->offload_enabled != dev2->offload_enabled)
1394 return 1;
Don Brace93849502015-07-18 11:12:49 -05001395 if (!is_logical_dev_addr_mode(dev1->scsi3addr))
1396 if (dev1->queue_depth != dev2->queue_depth)
1397 return 1;
Scott Teelbd9244f2012-01-19 14:01:30 -06001398 return 0;
1399}
1400
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001401/* Find needle in haystack. If exact match found, return DEVICE_SAME,
1402 * and return needle location in *index. If scsi3addr matches, but not
1403 * vendor, model, serial num, etc. return DEVICE_CHANGED, and return needle
Scott Teelbd9244f2012-01-19 14:01:30 -06001404 * location in *index.
1405 * In the case of a minor device attribute change, such as RAID level, just
1406 * return DEVICE_UPDATED, along with the updated device's location in index.
1407 * If needle not found, return DEVICE_NOT_FOUND.
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001408 */
1409static int hpsa_scsi_find_entry(struct hpsa_scsi_dev_t *needle,
1410 struct hpsa_scsi_dev_t *haystack[], int haystack_size,
1411 int *index)
1412{
1413 int i;
1414#define DEVICE_NOT_FOUND 0
1415#define DEVICE_CHANGED 1
1416#define DEVICE_SAME 2
Scott Teelbd9244f2012-01-19 14:01:30 -06001417#define DEVICE_UPDATED 3
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001418 for (i = 0; i < haystack_size; i++) {
Stephen M. Cameron23231042010-02-04 08:43:36 -06001419 if (haystack[i] == NULL) /* previously removed. */
1420 continue;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001421 if (SCSI3ADDR_EQ(needle->scsi3addr, haystack[i]->scsi3addr)) {
1422 *index = i;
Scott Teelbd9244f2012-01-19 14:01:30 -06001423 if (device_is_the_same(needle, haystack[i])) {
1424 if (device_updated(needle, haystack[i]))
1425 return DEVICE_UPDATED;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001426 return DEVICE_SAME;
Scott Teelbd9244f2012-01-19 14:01:30 -06001427 } else {
Stephen M. Cameron98465902014-02-21 16:25:00 -06001428 /* Keep offline devices offline */
1429 if (needle->volume_offline)
1430 return DEVICE_NOT_FOUND;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001431 return DEVICE_CHANGED;
Scott Teelbd9244f2012-01-19 14:01:30 -06001432 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001433 }
1434 }
1435 *index = -1;
1436 return DEVICE_NOT_FOUND;
1437}
1438
Stephen M. Cameron98465902014-02-21 16:25:00 -06001439static void hpsa_monitor_offline_device(struct ctlr_info *h,
1440 unsigned char scsi3addr[])
1441{
1442 struct offline_device_entry *device;
1443 unsigned long flags;
1444
1445 /* Check to see if device is already on the list */
1446 spin_lock_irqsave(&h->offline_device_lock, flags);
1447 list_for_each_entry(device, &h->offline_device_list, offline_list) {
1448 if (memcmp(device->scsi3addr, scsi3addr,
1449 sizeof(device->scsi3addr)) == 0) {
1450 spin_unlock_irqrestore(&h->offline_device_lock, flags);
1451 return;
1452 }
1453 }
1454 spin_unlock_irqrestore(&h->offline_device_lock, flags);
1455
1456 /* Device is not on the list, add it. */
1457 device = kmalloc(sizeof(*device), GFP_KERNEL);
1458 if (!device) {
1459 dev_warn(&h->pdev->dev, "out of memory in %s\n", __func__);
1460 return;
1461 }
1462 memcpy(device->scsi3addr, scsi3addr, sizeof(device->scsi3addr));
1463 spin_lock_irqsave(&h->offline_device_lock, flags);
1464 list_add_tail(&device->offline_list, &h->offline_device_list);
1465 spin_unlock_irqrestore(&h->offline_device_lock, flags);
1466}
1467
1468/* Print a message explaining various offline volume states */
1469static void hpsa_show_volume_status(struct ctlr_info *h,
1470 struct hpsa_scsi_dev_t *sd)
1471{
1472 if (sd->volume_offline == HPSA_VPD_LV_STATUS_UNSUPPORTED)
1473 dev_info(&h->pdev->dev,
1474 "C%d:B%d:T%d:L%d Volume status is not available through vital product data pages.\n",
1475 h->scsi_host->host_no,
1476 sd->bus, sd->target, sd->lun);
1477 switch (sd->volume_offline) {
1478 case HPSA_LV_OK:
1479 break;
1480 case HPSA_LV_UNDERGOING_ERASE:
1481 dev_info(&h->pdev->dev,
1482 "C%d:B%d:T%d:L%d Volume is undergoing background erase process.\n",
1483 h->scsi_host->host_no,
1484 sd->bus, sd->target, sd->lun);
1485 break;
Scott Benesh5ca01202015-07-18 11:13:04 -05001486 case HPSA_LV_NOT_AVAILABLE:
1487 dev_info(&h->pdev->dev,
1488 "C%d:B%d:T%d:L%d Volume is waiting for transforming volume.\n",
1489 h->scsi_host->host_no,
1490 sd->bus, sd->target, sd->lun);
1491 break;
Stephen M. Cameron98465902014-02-21 16:25:00 -06001492 case HPSA_LV_UNDERGOING_RPI:
1493 dev_info(&h->pdev->dev,
Scott Benesh5ca01202015-07-18 11:13:04 -05001494 "C%d:B%d:T%d:L%d Volume is undergoing rapid parity init.\n",
Stephen M. Cameron98465902014-02-21 16:25:00 -06001495 h->scsi_host->host_no,
1496 sd->bus, sd->target, sd->lun);
1497 break;
1498 case HPSA_LV_PENDING_RPI:
1499 dev_info(&h->pdev->dev,
Scott Benesh5ca01202015-07-18 11:13:04 -05001500 "C%d:B%d:T%d:L%d Volume is queued for rapid parity initialization process.\n",
1501 h->scsi_host->host_no,
1502 sd->bus, sd->target, sd->lun);
Stephen M. Cameron98465902014-02-21 16:25:00 -06001503 break;
1504 case HPSA_LV_ENCRYPTED_NO_KEY:
1505 dev_info(&h->pdev->dev,
1506 "C%d:B%d:T%d:L%d Volume is encrypted and cannot be accessed because key is not present.\n",
1507 h->scsi_host->host_no,
1508 sd->bus, sd->target, sd->lun);
1509 break;
1510 case HPSA_LV_PLAINTEXT_IN_ENCRYPT_ONLY_CONTROLLER:
1511 dev_info(&h->pdev->dev,
1512 "C%d:B%d:T%d:L%d Volume is not encrypted and cannot be accessed because controller is in encryption-only mode.\n",
1513 h->scsi_host->host_no,
1514 sd->bus, sd->target, sd->lun);
1515 break;
1516 case HPSA_LV_UNDERGOING_ENCRYPTION:
1517 dev_info(&h->pdev->dev,
1518 "C%d:B%d:T%d:L%d Volume is undergoing encryption process.\n",
1519 h->scsi_host->host_no,
1520 sd->bus, sd->target, sd->lun);
1521 break;
1522 case HPSA_LV_UNDERGOING_ENCRYPTION_REKEYING:
1523 dev_info(&h->pdev->dev,
1524 "C%d:B%d:T%d:L%d Volume is undergoing encryption re-keying process.\n",
1525 h->scsi_host->host_no,
1526 sd->bus, sd->target, sd->lun);
1527 break;
1528 case HPSA_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER:
1529 dev_info(&h->pdev->dev,
1530 "C%d:B%d:T%d:L%d Volume is encrypted and cannot be accessed because controller does not have encryption enabled.\n",
1531 h->scsi_host->host_no,
1532 sd->bus, sd->target, sd->lun);
1533 break;
1534 case HPSA_LV_PENDING_ENCRYPTION:
1535 dev_info(&h->pdev->dev,
1536 "C%d:B%d:T%d:L%d Volume is pending migration to encrypted state, but process has not started.\n",
1537 h->scsi_host->host_no,
1538 sd->bus, sd->target, sd->lun);
1539 break;
1540 case HPSA_LV_PENDING_ENCRYPTION_REKEYING:
1541 dev_info(&h->pdev->dev,
1542 "C%d:B%d:T%d:L%d Volume is encrypted and is pending encryption rekeying.\n",
1543 h->scsi_host->host_no,
1544 sd->bus, sd->target, sd->lun);
1545 break;
1546 }
1547}
1548
Don Brace03383732015-01-23 16:43:30 -06001549/*
1550 * Figure the list of physical drive pointers for a logical drive with
1551 * raid offload configured.
1552 */
1553static void hpsa_figure_phys_disk_ptrs(struct ctlr_info *h,
1554 struct hpsa_scsi_dev_t *dev[], int ndevices,
1555 struct hpsa_scsi_dev_t *logical_drive)
1556{
1557 struct raid_map_data *map = &logical_drive->raid_map;
1558 struct raid_map_disk_data *dd = &map->data[0];
1559 int i, j;
1560 int total_disks_per_row = le16_to_cpu(map->data_disks_per_row) +
1561 le16_to_cpu(map->metadata_disks_per_row);
1562 int nraid_map_entries = le16_to_cpu(map->row_cnt) *
1563 le16_to_cpu(map->layout_map_count) *
1564 total_disks_per_row;
1565 int nphys_disk = le16_to_cpu(map->layout_map_count) *
1566 total_disks_per_row;
1567 int qdepth;
1568
1569 if (nraid_map_entries > RAID_MAP_MAX_ENTRIES)
1570 nraid_map_entries = RAID_MAP_MAX_ENTRIES;
1571
Webb Scalesd604f532015-04-23 09:35:22 -05001572 logical_drive->nphysical_disks = nraid_map_entries;
1573
Don Brace03383732015-01-23 16:43:30 -06001574 qdepth = 0;
1575 for (i = 0; i < nraid_map_entries; i++) {
1576 logical_drive->phys_disk[i] = NULL;
1577 if (!logical_drive->offload_config)
1578 continue;
1579 for (j = 0; j < ndevices; j++) {
1580 if (dev[j]->devtype != TYPE_DISK)
1581 continue;
1582 if (is_logical_dev_addr_mode(dev[j]->scsi3addr))
1583 continue;
1584 if (dev[j]->ioaccel_handle != dd[i].ioaccel_handle)
1585 continue;
1586
1587 logical_drive->phys_disk[i] = dev[j];
1588 if (i < nphys_disk)
1589 qdepth = min(h->nr_cmds, qdepth +
1590 logical_drive->phys_disk[i]->queue_depth);
1591 break;
1592 }
1593
1594 /*
1595 * This can happen if a physical drive is removed and
1596 * the logical drive is degraded. In that case, the RAID
1597 * map data will refer to a physical disk which isn't actually
1598 * present. And in that case offload_enabled should already
1599 * be 0, but we'll turn it off here just in case
1600 */
1601 if (!logical_drive->phys_disk[i]) {
1602 logical_drive->offload_enabled = 0;
Stephen Cameron41ce4c32015-04-23 09:31:47 -05001603 logical_drive->offload_to_be_enabled = 0;
1604 logical_drive->queue_depth = 8;
Don Brace03383732015-01-23 16:43:30 -06001605 }
1606 }
1607 if (nraid_map_entries)
1608 /*
1609 * This is correct for reads, too high for full stripe writes,
1610 * way too high for partial stripe writes
1611 */
1612 logical_drive->queue_depth = qdepth;
1613 else
1614 logical_drive->queue_depth = h->nr_cmds;
1615}
1616
1617static void hpsa_update_log_drive_phys_drive_ptrs(struct ctlr_info *h,
1618 struct hpsa_scsi_dev_t *dev[], int ndevices)
1619{
1620 int i;
1621
1622 for (i = 0; i < ndevices; i++) {
1623 if (dev[i]->devtype != TYPE_DISK)
1624 continue;
1625 if (!is_logical_dev_addr_mode(dev[i]->scsi3addr))
1626 continue;
Stephen Cameron41ce4c32015-04-23 09:31:47 -05001627
1628 /*
1629 * If offload is currently enabled, the RAID map and
1630 * phys_disk[] assignment *better* not be changing
1631 * and since it isn't changing, we do not need to
1632 * update it.
1633 */
1634 if (dev[i]->offload_enabled)
1635 continue;
1636
Don Brace03383732015-01-23 16:43:30 -06001637 hpsa_figure_phys_disk_ptrs(h, dev, ndevices, dev[i]);
1638 }
1639}
1640
Stephen M. Cameron4967bd32010-02-04 08:41:49 -06001641static void adjust_hpsa_scsi_table(struct ctlr_info *h, int hostno,
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001642 struct hpsa_scsi_dev_t *sd[], int nsds)
1643{
1644 /* sd contains scsi3 addresses and devtypes, and inquiry
1645 * data. This function takes what's in sd to be the current
1646 * reality and updates h->dev[] to reflect that reality.
1647 */
1648 int i, entry, device_change, changes = 0;
1649 struct hpsa_scsi_dev_t *csd;
1650 unsigned long flags;
1651 struct hpsa_scsi_dev_t **added, **removed;
1652 int nadded, nremoved;
1653 struct Scsi_Host *sh = NULL;
1654
Scott Teelcfe5bad2011-10-26 16:21:07 -05001655 added = kzalloc(sizeof(*added) * HPSA_MAX_DEVICES, GFP_KERNEL);
1656 removed = kzalloc(sizeof(*removed) * HPSA_MAX_DEVICES, GFP_KERNEL);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001657
1658 if (!added || !removed) {
1659 dev_warn(&h->pdev->dev, "out of memory in "
1660 "adjust_hpsa_scsi_table\n");
1661 goto free_and_out;
1662 }
1663
1664 spin_lock_irqsave(&h->devlock, flags);
1665
1666 /* find any devices in h->dev[] that are not in
1667 * sd[] and remove them from h->dev[], and for any
1668 * devices which have changed, remove the old device
1669 * info and add the new device info.
Scott Teelbd9244f2012-01-19 14:01:30 -06001670 * If minor device attributes change, just update
1671 * the existing device structure.
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001672 */
1673 i = 0;
1674 nremoved = 0;
1675 nadded = 0;
1676 while (i < h->ndevices) {
1677 csd = h->dev[i];
1678 device_change = hpsa_scsi_find_entry(csd, sd, nsds, &entry);
1679 if (device_change == DEVICE_NOT_FOUND) {
1680 changes++;
1681 hpsa_scsi_remove_entry(h, hostno, i,
1682 removed, &nremoved);
1683 continue; /* remove ^^^, hence i not incremented */
1684 } else if (device_change == DEVICE_CHANGED) {
1685 changes++;
Stephen M. Cameron2a8ccf32010-02-04 08:43:41 -06001686 hpsa_scsi_replace_entry(h, hostno, i, sd[entry],
1687 added, &nadded, removed, &nremoved);
Stephen M. Cameronc7f172d2010-02-04 08:43:31 -06001688 /* Set it to NULL to prevent it from being freed
1689 * at the bottom of hpsa_update_scsi_devices()
1690 */
1691 sd[entry] = NULL;
Scott Teelbd9244f2012-01-19 14:01:30 -06001692 } else if (device_change == DEVICE_UPDATED) {
1693 hpsa_scsi_update_entry(h, hostno, i, sd[entry]);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001694 }
1695 i++;
1696 }
1697
1698 /* Now, make sure every device listed in sd[] is also
1699 * listed in h->dev[], adding them if they aren't found
1700 */
1701
1702 for (i = 0; i < nsds; i++) {
1703 if (!sd[i]) /* if already added above. */
1704 continue;
Stephen M. Cameron98465902014-02-21 16:25:00 -06001705
1706 /* Don't add devices which are NOT READY, FORMAT IN PROGRESS
1707 * as the SCSI mid-layer does not handle such devices well.
1708 * It relentlessly loops sending TUR at 3Hz, then READ(10)
1709 * at 160Hz, and prevents the system from coming up.
1710 */
1711 if (sd[i]->volume_offline) {
1712 hpsa_show_volume_status(h, sd[i]);
Webb Scales0d96ef52015-04-23 09:31:55 -05001713 hpsa_show_dev_msg(KERN_INFO, h, sd[i], "offline");
Stephen M. Cameron98465902014-02-21 16:25:00 -06001714 continue;
1715 }
1716
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001717 device_change = hpsa_scsi_find_entry(sd[i], h->dev,
1718 h->ndevices, &entry);
1719 if (device_change == DEVICE_NOT_FOUND) {
1720 changes++;
1721 if (hpsa_scsi_add_entry(h, hostno, sd[i],
1722 added, &nadded) != 0)
1723 break;
1724 sd[i] = NULL; /* prevent from being freed later. */
1725 } else if (device_change == DEVICE_CHANGED) {
1726 /* should never happen... */
1727 changes++;
1728 dev_warn(&h->pdev->dev,
1729 "device unexpectedly changed.\n");
1730 /* but if it does happen, we just ignore that device */
1731 }
1732 }
Stephen Cameron41ce4c32015-04-23 09:31:47 -05001733 hpsa_update_log_drive_phys_drive_ptrs(h, h->dev, h->ndevices);
1734
1735 /* Now that h->dev[]->phys_disk[] is coherent, we can enable
1736 * any logical drives that need it enabled.
1737 */
1738 for (i = 0; i < h->ndevices; i++)
1739 h->dev[i]->offload_enabled = h->dev[i]->offload_to_be_enabled;
1740
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001741 spin_unlock_irqrestore(&h->devlock, flags);
1742
Stephen M. Cameron98465902014-02-21 16:25:00 -06001743 /* Monitor devices which are in one of several NOT READY states to be
1744 * brought online later. This must be done without holding h->devlock,
1745 * so don't touch h->dev[]
1746 */
1747 for (i = 0; i < nsds; i++) {
1748 if (!sd[i]) /* if already added above. */
1749 continue;
1750 if (sd[i]->volume_offline)
1751 hpsa_monitor_offline_device(h, sd[i]->scsi3addr);
1752 }
1753
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001754 /* Don't notify scsi mid layer of any changes the first time through
1755 * (or if there are no changes) scsi_scan_host will do it later the
1756 * first time through.
1757 */
1758 if (hostno == -1 || !changes)
1759 goto free_and_out;
1760
1761 sh = h->scsi_host;
1762 /* Notify scsi mid layer of any removed devices */
1763 for (i = 0; i < nremoved; i++) {
Stephen Cameron41ce4c32015-04-23 09:31:47 -05001764 if (removed[i]->expose_state & HPSA_SCSI_ADD) {
1765 struct scsi_device *sdev =
1766 scsi_device_lookup(sh, removed[i]->bus,
1767 removed[i]->target, removed[i]->lun);
1768 if (sdev != NULL) {
1769 scsi_remove_device(sdev);
1770 scsi_device_put(sdev);
1771 } else {
1772 /*
1773 * We don't expect to get here.
1774 * future cmds to this device will get selection
1775 * timeout as if the device was gone.
1776 */
Webb Scales0d96ef52015-04-23 09:31:55 -05001777 hpsa_show_dev_msg(KERN_WARNING, h, removed[i],
1778 "didn't find device for removal.");
Stephen Cameron41ce4c32015-04-23 09:31:47 -05001779 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001780 }
1781 kfree(removed[i]);
1782 removed[i] = NULL;
1783 }
1784
1785 /* Notify scsi mid layer of any added devices */
1786 for (i = 0; i < nadded; i++) {
Stephen Cameron41ce4c32015-04-23 09:31:47 -05001787 if (!(added[i]->expose_state & HPSA_SCSI_ADD))
1788 continue;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001789 if (scsi_add_device(sh, added[i]->bus,
1790 added[i]->target, added[i]->lun) == 0)
1791 continue;
Webb Scales0d96ef52015-04-23 09:31:55 -05001792 hpsa_show_dev_msg(KERN_WARNING, h, added[i],
1793 "addition failed, device not added.");
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001794 /* now we have to remove it from h->dev,
1795 * since it didn't get added to scsi mid layer
1796 */
1797 fixup_botched_add(h, added[i]);
Robert Elliott105a3db2015-04-23 09:33:48 -05001798 added[i] = NULL;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001799 }
1800
1801free_and_out:
1802 kfree(added);
1803 kfree(removed);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001804}
1805
1806/*
Joe Perches9e03aa22013-09-03 13:45:58 -07001807 * Lookup bus/target/lun and return corresponding struct hpsa_scsi_dev_t *
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001808 * Assume's h->devlock is held.
1809 */
1810static struct hpsa_scsi_dev_t *lookup_hpsa_scsi_dev(struct ctlr_info *h,
1811 int bus, int target, int lun)
1812{
1813 int i;
1814 struct hpsa_scsi_dev_t *sd;
1815
1816 for (i = 0; i < h->ndevices; i++) {
1817 sd = h->dev[i];
1818 if (sd->bus == bus && sd->target == target && sd->lun == lun)
1819 return sd;
1820 }
1821 return NULL;
1822}
1823
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001824static int hpsa_slave_alloc(struct scsi_device *sdev)
1825{
1826 struct hpsa_scsi_dev_t *sd;
1827 unsigned long flags;
1828 struct ctlr_info *h;
1829
1830 h = sdev_to_hba(sdev);
1831 spin_lock_irqsave(&h->devlock, flags);
1832 sd = lookup_hpsa_scsi_dev(h, sdev_channel(sdev),
1833 sdev_id(sdev), sdev->lun);
Stephen Cameron41ce4c32015-04-23 09:31:47 -05001834 if (likely(sd)) {
Don Brace03383732015-01-23 16:43:30 -06001835 atomic_set(&sd->ioaccel_cmds_out, 0);
Stephen Cameron41ce4c32015-04-23 09:31:47 -05001836 sdev->hostdata = (sd->expose_state & HPSA_SCSI_ADD) ? sd : NULL;
1837 } else
1838 sdev->hostdata = NULL;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001839 spin_unlock_irqrestore(&h->devlock, flags);
1840 return 0;
1841}
1842
Stephen Cameron41ce4c32015-04-23 09:31:47 -05001843/* configure scsi device based on internal per-device structure */
1844static int hpsa_slave_configure(struct scsi_device *sdev)
1845{
1846 struct hpsa_scsi_dev_t *sd;
1847 int queue_depth;
1848
1849 sd = sdev->hostdata;
1850 sdev->no_uld_attach = !sd || !(sd->expose_state & HPSA_ULD_ATTACH);
1851
1852 if (sd)
1853 queue_depth = sd->queue_depth != 0 ?
1854 sd->queue_depth : sdev->host->can_queue;
1855 else
1856 queue_depth = sdev->host->can_queue;
1857
1858 scsi_change_queue_depth(sdev, queue_depth);
1859
1860 return 0;
1861}
1862
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001863static void hpsa_slave_destroy(struct scsi_device *sdev)
1864{
Stephen M. Cameronbcc44252010-02-04 08:41:54 -06001865 /* nothing to do. */
Stephen M. Cameronedd16362009-12-08 14:09:11 -08001866}
1867
Webb Scalesd9a729f2015-04-23 09:33:27 -05001868static void hpsa_free_ioaccel2_sg_chain_blocks(struct ctlr_info *h)
1869{
1870 int i;
1871
1872 if (!h->ioaccel2_cmd_sg_list)
1873 return;
1874 for (i = 0; i < h->nr_cmds; i++) {
1875 kfree(h->ioaccel2_cmd_sg_list[i]);
1876 h->ioaccel2_cmd_sg_list[i] = NULL;
1877 }
1878 kfree(h->ioaccel2_cmd_sg_list);
1879 h->ioaccel2_cmd_sg_list = NULL;
1880}
1881
1882static int hpsa_allocate_ioaccel2_sg_chain_blocks(struct ctlr_info *h)
1883{
1884 int i;
1885
1886 if (h->chainsize <= 0)
1887 return 0;
1888
1889 h->ioaccel2_cmd_sg_list =
1890 kzalloc(sizeof(*h->ioaccel2_cmd_sg_list) * h->nr_cmds,
1891 GFP_KERNEL);
1892 if (!h->ioaccel2_cmd_sg_list)
1893 return -ENOMEM;
1894 for (i = 0; i < h->nr_cmds; i++) {
1895 h->ioaccel2_cmd_sg_list[i] =
1896 kmalloc(sizeof(*h->ioaccel2_cmd_sg_list[i]) *
1897 h->maxsgentries, GFP_KERNEL);
1898 if (!h->ioaccel2_cmd_sg_list[i])
1899 goto clean;
1900 }
1901 return 0;
1902
1903clean:
1904 hpsa_free_ioaccel2_sg_chain_blocks(h);
1905 return -ENOMEM;
1906}
1907
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06001908static void hpsa_free_sg_chain_blocks(struct ctlr_info *h)
1909{
1910 int i;
1911
1912 if (!h->cmd_sg_list)
1913 return;
1914 for (i = 0; i < h->nr_cmds; i++) {
1915 kfree(h->cmd_sg_list[i]);
1916 h->cmd_sg_list[i] = NULL;
1917 }
1918 kfree(h->cmd_sg_list);
1919 h->cmd_sg_list = NULL;
1920}
1921
Robert Elliott105a3db2015-04-23 09:33:48 -05001922static int hpsa_alloc_sg_chain_blocks(struct ctlr_info *h)
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06001923{
1924 int i;
1925
1926 if (h->chainsize <= 0)
1927 return 0;
1928
1929 h->cmd_sg_list = kzalloc(sizeof(*h->cmd_sg_list) * h->nr_cmds,
1930 GFP_KERNEL);
Robert Elliott3d4e6af2015-01-23 16:42:42 -06001931 if (!h->cmd_sg_list) {
1932 dev_err(&h->pdev->dev, "Failed to allocate SG list\n");
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06001933 return -ENOMEM;
Robert Elliott3d4e6af2015-01-23 16:42:42 -06001934 }
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06001935 for (i = 0; i < h->nr_cmds; i++) {
1936 h->cmd_sg_list[i] = kmalloc(sizeof(*h->cmd_sg_list[i]) *
1937 h->chainsize, GFP_KERNEL);
Robert Elliott3d4e6af2015-01-23 16:42:42 -06001938 if (!h->cmd_sg_list[i]) {
1939 dev_err(&h->pdev->dev, "Failed to allocate cmd SG\n");
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06001940 goto clean;
Robert Elliott3d4e6af2015-01-23 16:42:42 -06001941 }
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06001942 }
1943 return 0;
1944
1945clean:
1946 hpsa_free_sg_chain_blocks(h);
1947 return -ENOMEM;
1948}
1949
Webb Scalesd9a729f2015-04-23 09:33:27 -05001950static int hpsa_map_ioaccel2_sg_chain_block(struct ctlr_info *h,
1951 struct io_accel2_cmd *cp, struct CommandList *c)
1952{
1953 struct ioaccel2_sg_element *chain_block;
1954 u64 temp64;
1955 u32 chain_size;
1956
1957 chain_block = h->ioaccel2_cmd_sg_list[c->cmdindex];
1958 chain_size = le32_to_cpu(cp->data_len);
1959 temp64 = pci_map_single(h->pdev, chain_block, chain_size,
1960 PCI_DMA_TODEVICE);
1961 if (dma_mapping_error(&h->pdev->dev, temp64)) {
1962 /* prevent subsequent unmapping */
1963 cp->sg->address = 0;
1964 return -1;
1965 }
1966 cp->sg->address = cpu_to_le64(temp64);
1967 return 0;
1968}
1969
1970static void hpsa_unmap_ioaccel2_sg_chain_block(struct ctlr_info *h,
1971 struct io_accel2_cmd *cp)
1972{
1973 struct ioaccel2_sg_element *chain_sg;
1974 u64 temp64;
1975 u32 chain_size;
1976
1977 chain_sg = cp->sg;
1978 temp64 = le64_to_cpu(chain_sg->address);
1979 chain_size = le32_to_cpu(cp->data_len);
1980 pci_unmap_single(h->pdev, temp64, chain_size, PCI_DMA_TODEVICE);
1981}
1982
Stephen M. Camerone2bea6d2013-02-20 11:24:46 -06001983static int hpsa_map_sg_chain_block(struct ctlr_info *h,
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06001984 struct CommandList *c)
1985{
1986 struct SGDescriptor *chain_sg, *chain_block;
1987 u64 temp64;
Stephen M. Cameron50a0dec2014-11-14 17:26:59 -06001988 u32 chain_len;
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06001989
1990 chain_sg = &c->SG[h->max_cmd_sg_entries - 1];
1991 chain_block = h->cmd_sg_list[c->cmdindex];
Stephen M. Cameron50a0dec2014-11-14 17:26:59 -06001992 chain_sg->Ext = cpu_to_le32(HPSA_SG_CHAIN);
1993 chain_len = sizeof(*chain_sg) *
Don Brace2b08b3e2015-01-23 16:41:09 -06001994 (le16_to_cpu(c->Header.SGTotal) - h->max_cmd_sg_entries);
Stephen M. Cameron50a0dec2014-11-14 17:26:59 -06001995 chain_sg->Len = cpu_to_le32(chain_len);
1996 temp64 = pci_map_single(h->pdev, chain_block, chain_len,
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06001997 PCI_DMA_TODEVICE);
Stephen M. Camerone2bea6d2013-02-20 11:24:46 -06001998 if (dma_mapping_error(&h->pdev->dev, temp64)) {
1999 /* prevent subsequent unmapping */
Stephen M. Cameron50a0dec2014-11-14 17:26:59 -06002000 chain_sg->Addr = cpu_to_le64(0);
Stephen M. Camerone2bea6d2013-02-20 11:24:46 -06002001 return -1;
2002 }
Stephen M. Cameron50a0dec2014-11-14 17:26:59 -06002003 chain_sg->Addr = cpu_to_le64(temp64);
Stephen M. Camerone2bea6d2013-02-20 11:24:46 -06002004 return 0;
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06002005}
2006
2007static void hpsa_unmap_sg_chain_block(struct ctlr_info *h,
2008 struct CommandList *c)
2009{
2010 struct SGDescriptor *chain_sg;
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06002011
Stephen M. Cameron50a0dec2014-11-14 17:26:59 -06002012 if (le16_to_cpu(c->Header.SGTotal) <= h->max_cmd_sg_entries)
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06002013 return;
2014
2015 chain_sg = &c->SG[h->max_cmd_sg_entries - 1];
Stephen M. Cameron50a0dec2014-11-14 17:26:59 -06002016 pci_unmap_single(h->pdev, le64_to_cpu(chain_sg->Addr),
2017 le32_to_cpu(chain_sg->Len), PCI_DMA_TODEVICE);
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06002018}
2019
Scott Teela09c1442014-02-18 13:57:21 -06002020
2021/* Decode the various types of errors on ioaccel2 path.
2022 * Return 1 for any error that should generate a RAID path retry.
2023 * Return 0 for errors that don't require a RAID path retry.
2024 */
2025static int handle_ioaccel_mode2_error(struct ctlr_info *h,
Scott Teelc3497752014-02-18 13:56:34 -06002026 struct CommandList *c,
2027 struct scsi_cmnd *cmd,
2028 struct io_accel2_cmd *c2)
2029{
2030 int data_len;
Scott Teela09c1442014-02-18 13:57:21 -06002031 int retry = 0;
Joe Handzikc40820d2015-04-23 09:33:32 -05002032 u32 ioaccel2_resid = 0;
Scott Teelc3497752014-02-18 13:56:34 -06002033
2034 switch (c2->error_data.serv_response) {
2035 case IOACCEL2_SERV_RESPONSE_COMPLETE:
2036 switch (c2->error_data.status) {
2037 case IOACCEL2_STATUS_SR_TASK_COMP_GOOD:
2038 break;
2039 case IOACCEL2_STATUS_SR_TASK_COMP_CHK_COND:
Stephen M. Cameronee6b1882014-05-29 10:53:54 -05002040 cmd->result |= SAM_STAT_CHECK_CONDITION;
Scott Teelc3497752014-02-18 13:56:34 -06002041 if (c2->error_data.data_present !=
Stephen M. Cameronee6b1882014-05-29 10:53:54 -05002042 IOACCEL2_SENSE_DATA_PRESENT) {
2043 memset(cmd->sense_buffer, 0,
2044 SCSI_SENSE_BUFFERSIZE);
Scott Teelc3497752014-02-18 13:56:34 -06002045 break;
Stephen M. Cameronee6b1882014-05-29 10:53:54 -05002046 }
Scott Teelc3497752014-02-18 13:56:34 -06002047 /* copy the sense data */
2048 data_len = c2->error_data.sense_data_len;
2049 if (data_len > SCSI_SENSE_BUFFERSIZE)
2050 data_len = SCSI_SENSE_BUFFERSIZE;
2051 if (data_len > sizeof(c2->error_data.sense_data_buff))
2052 data_len =
2053 sizeof(c2->error_data.sense_data_buff);
2054 memcpy(cmd->sense_buffer,
2055 c2->error_data.sense_data_buff, data_len);
Scott Teela09c1442014-02-18 13:57:21 -06002056 retry = 1;
Scott Teelc3497752014-02-18 13:56:34 -06002057 break;
2058 case IOACCEL2_STATUS_SR_TASK_COMP_BUSY:
Scott Teela09c1442014-02-18 13:57:21 -06002059 retry = 1;
Scott Teelc3497752014-02-18 13:56:34 -06002060 break;
2061 case IOACCEL2_STATUS_SR_TASK_COMP_RES_CON:
Scott Teela09c1442014-02-18 13:57:21 -06002062 retry = 1;
Scott Teelc3497752014-02-18 13:56:34 -06002063 break;
2064 case IOACCEL2_STATUS_SR_TASK_COMP_SET_FULL:
Stephen Cameron4a8da222015-04-23 09:32:43 -05002065 retry = 1;
Scott Teelc3497752014-02-18 13:56:34 -06002066 break;
2067 case IOACCEL2_STATUS_SR_TASK_COMP_ABORTED:
Scott Teela09c1442014-02-18 13:57:21 -06002068 retry = 1;
Scott Teelc3497752014-02-18 13:56:34 -06002069 break;
2070 default:
Scott Teela09c1442014-02-18 13:57:21 -06002071 retry = 1;
Scott Teelc3497752014-02-18 13:56:34 -06002072 break;
2073 }
2074 break;
2075 case IOACCEL2_SERV_RESPONSE_FAILURE:
Joe Handzikc40820d2015-04-23 09:33:32 -05002076 switch (c2->error_data.status) {
2077 case IOACCEL2_STATUS_SR_IO_ERROR:
2078 case IOACCEL2_STATUS_SR_IO_ABORTED:
2079 case IOACCEL2_STATUS_SR_OVERRUN:
2080 retry = 1;
2081 break;
2082 case IOACCEL2_STATUS_SR_UNDERRUN:
2083 cmd->result = (DID_OK << 16); /* host byte */
2084 cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */
2085 ioaccel2_resid = get_unaligned_le32(
2086 &c2->error_data.resid_cnt[0]);
2087 scsi_set_resid(cmd, ioaccel2_resid);
2088 break;
2089 case IOACCEL2_STATUS_SR_NO_PATH_TO_DEVICE:
2090 case IOACCEL2_STATUS_SR_INVALID_DEVICE:
2091 case IOACCEL2_STATUS_SR_IOACCEL_DISABLED:
2092 /* We will get an event from ctlr to trigger rescan */
2093 retry = 1;
2094 break;
2095 default:
2096 retry = 1;
Joe Handzikc40820d2015-04-23 09:33:32 -05002097 }
Scott Teelc3497752014-02-18 13:56:34 -06002098 break;
2099 case IOACCEL2_SERV_RESPONSE_TMF_COMPLETE:
2100 break;
2101 case IOACCEL2_SERV_RESPONSE_TMF_SUCCESS:
2102 break;
2103 case IOACCEL2_SERV_RESPONSE_TMF_REJECTED:
Scott Teela09c1442014-02-18 13:57:21 -06002104 retry = 1;
Scott Teelc3497752014-02-18 13:56:34 -06002105 break;
2106 case IOACCEL2_SERV_RESPONSE_TMF_WRONG_LUN:
Scott Teelc3497752014-02-18 13:56:34 -06002107 break;
2108 default:
Scott Teela09c1442014-02-18 13:57:21 -06002109 retry = 1;
Scott Teelc3497752014-02-18 13:56:34 -06002110 break;
2111 }
Scott Teela09c1442014-02-18 13:57:21 -06002112
2113 return retry; /* retry on raid path? */
Scott Teelc3497752014-02-18 13:56:34 -06002114}
2115
Webb Scalesa58e7e52015-04-23 09:34:16 -05002116static void hpsa_cmd_resolve_events(struct ctlr_info *h,
2117 struct CommandList *c)
2118{
Webb Scalesd604f532015-04-23 09:35:22 -05002119 bool do_wake = false;
2120
Webb Scalesa58e7e52015-04-23 09:34:16 -05002121 /*
2122 * Prevent the following race in the abort handler:
2123 *
2124 * 1. LLD is requested to abort a SCSI command
2125 * 2. The SCSI command completes
2126 * 3. The struct CommandList associated with step 2 is made available
2127 * 4. New I/O request to LLD to another LUN re-uses struct CommandList
2128 * 5. Abort handler follows scsi_cmnd->host_scribble and
2129 * finds struct CommandList and tries to aborts it
2130 * Now we have aborted the wrong command.
2131 *
Webb Scalesd604f532015-04-23 09:35:22 -05002132 * Reset c->scsi_cmd here so that the abort or reset handler will know
2133 * this command has completed. Then, check to see if the handler is
Webb Scalesa58e7e52015-04-23 09:34:16 -05002134 * waiting for this command, and, if so, wake it.
2135 */
2136 c->scsi_cmd = SCSI_CMD_IDLE;
Webb Scalesd604f532015-04-23 09:35:22 -05002137 mb(); /* Declare command idle before checking for pending events. */
Webb Scalesa58e7e52015-04-23 09:34:16 -05002138 if (c->abort_pending) {
Webb Scalesd604f532015-04-23 09:35:22 -05002139 do_wake = true;
Webb Scalesa58e7e52015-04-23 09:34:16 -05002140 c->abort_pending = false;
Webb Scalesa58e7e52015-04-23 09:34:16 -05002141 }
Webb Scalesd604f532015-04-23 09:35:22 -05002142 if (c->reset_pending) {
2143 unsigned long flags;
2144 struct hpsa_scsi_dev_t *dev;
2145
2146 /*
2147 * There appears to be a reset pending; lock the lock and
2148 * reconfirm. If so, then decrement the count of outstanding
2149 * commands and wake the reset command if this is the last one.
2150 */
2151 spin_lock_irqsave(&h->lock, flags);
2152 dev = c->reset_pending; /* Re-fetch under the lock. */
2153 if (dev && atomic_dec_and_test(&dev->reset_cmds_out))
2154 do_wake = true;
2155 c->reset_pending = NULL;
2156 spin_unlock_irqrestore(&h->lock, flags);
2157 }
2158
2159 if (do_wake)
2160 wake_up_all(&h->event_sync_wait_queue);
Webb Scalesa58e7e52015-04-23 09:34:16 -05002161}
2162
Webb Scales73153fe2015-04-23 09:35:04 -05002163static void hpsa_cmd_resolve_and_free(struct ctlr_info *h,
2164 struct CommandList *c)
2165{
2166 hpsa_cmd_resolve_events(h, c);
2167 cmd_tagged_free(h, c);
2168}
2169
Webb Scales8a0ff922015-04-23 09:34:11 -05002170static void hpsa_cmd_free_and_done(struct ctlr_info *h,
2171 struct CommandList *c, struct scsi_cmnd *cmd)
2172{
Webb Scales73153fe2015-04-23 09:35:04 -05002173 hpsa_cmd_resolve_and_free(h, c);
Webb Scales8a0ff922015-04-23 09:34:11 -05002174 cmd->scsi_done(cmd);
2175}
2176
2177static void hpsa_retry_cmd(struct ctlr_info *h, struct CommandList *c)
2178{
2179 INIT_WORK(&c->work, hpsa_command_resubmit_worker);
2180 queue_work_on(raw_smp_processor_id(), h->resubmit_wq, &c->work);
2181}
2182
Webb Scalesa58e7e52015-04-23 09:34:16 -05002183static void hpsa_set_scsi_cmd_aborted(struct scsi_cmnd *cmd)
2184{
2185 cmd->result = DID_ABORT << 16;
2186}
2187
2188static void hpsa_cmd_abort_and_free(struct ctlr_info *h, struct CommandList *c,
2189 struct scsi_cmnd *cmd)
2190{
2191 hpsa_set_scsi_cmd_aborted(cmd);
2192 dev_warn(&h->pdev->dev, "CDB %16phN was aborted with status 0x%x\n",
2193 c->Request.CDB, c->err_info->ScsiStatus);
Webb Scales73153fe2015-04-23 09:35:04 -05002194 hpsa_cmd_resolve_and_free(h, c);
Webb Scalesa58e7e52015-04-23 09:34:16 -05002195}
2196
Scott Teelc3497752014-02-18 13:56:34 -06002197static void process_ioaccel2_completion(struct ctlr_info *h,
2198 struct CommandList *c, struct scsi_cmnd *cmd,
2199 struct hpsa_scsi_dev_t *dev)
2200{
2201 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
2202
2203 /* check for good status */
2204 if (likely(c2->error_data.serv_response == 0 &&
Webb Scales8a0ff922015-04-23 09:34:11 -05002205 c2->error_data.status == 0))
2206 return hpsa_cmd_free_and_done(h, c, cmd);
Scott Teelc3497752014-02-18 13:56:34 -06002207
Webb Scales8a0ff922015-04-23 09:34:11 -05002208 /*
2209 * Any RAID offload error results in retry which will use
Scott Teelc3497752014-02-18 13:56:34 -06002210 * the normal I/O path so the controller can handle whatever's
2211 * wrong.
2212 */
2213 if (is_logical_dev_addr_mode(dev->scsi3addr) &&
2214 c2->error_data.serv_response ==
2215 IOACCEL2_SERV_RESPONSE_FAILURE) {
Don Brace080ef1c2015-01-23 16:43:25 -06002216 if (c2->error_data.status ==
2217 IOACCEL2_STATUS_SR_IOACCEL_DISABLED)
2218 dev->offload_enabled = 0;
Webb Scales8a0ff922015-04-23 09:34:11 -05002219
2220 return hpsa_retry_cmd(h, c);
Scott Teelc3497752014-02-18 13:56:34 -06002221 }
Don Brace080ef1c2015-01-23 16:43:25 -06002222
2223 if (handle_ioaccel_mode2_error(h, c, cmd, c2))
Webb Scales8a0ff922015-04-23 09:34:11 -05002224 return hpsa_retry_cmd(h, c);
Don Brace080ef1c2015-01-23 16:43:25 -06002225
Webb Scales8a0ff922015-04-23 09:34:11 -05002226 return hpsa_cmd_free_and_done(h, c, cmd);
Scott Teelc3497752014-02-18 13:56:34 -06002227}
2228
Stephen Cameron9437ac42015-04-23 09:32:16 -05002229/* Returns 0 on success, < 0 otherwise. */
2230static int hpsa_evaluate_tmf_status(struct ctlr_info *h,
2231 struct CommandList *cp)
2232{
2233 u8 tmf_status = cp->err_info->ScsiStatus;
2234
2235 switch (tmf_status) {
2236 case CISS_TMF_COMPLETE:
2237 /*
2238 * CISS_TMF_COMPLETE never happens, instead,
2239 * ei->CommandStatus == 0 for this case.
2240 */
2241 case CISS_TMF_SUCCESS:
2242 return 0;
2243 case CISS_TMF_INVALID_FRAME:
2244 case CISS_TMF_NOT_SUPPORTED:
2245 case CISS_TMF_FAILED:
2246 case CISS_TMF_WRONG_LUN:
2247 case CISS_TMF_OVERLAPPED_TAG:
2248 break;
2249 default:
2250 dev_warn(&h->pdev->dev, "Unknown TMF status: 0x%02x\n",
2251 tmf_status);
2252 break;
2253 }
2254 return -tmf_status;
2255}
2256
Stephen M. Cameron1fb011f2011-05-03 14:59:00 -05002257static void complete_scsi_command(struct CommandList *cp)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002258{
2259 struct scsi_cmnd *cmd;
2260 struct ctlr_info *h;
2261 struct ErrorInfo *ei;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06002262 struct hpsa_scsi_dev_t *dev;
Webb Scalesd9a729f2015-04-23 09:33:27 -05002263 struct io_accel2_cmd *c2;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002264
Stephen Cameron9437ac42015-04-23 09:32:16 -05002265 u8 sense_key;
2266 u8 asc; /* additional sense code */
2267 u8 ascq; /* additional sense code qualifier */
Stephen M. Camerondb111e12011-06-03 09:57:34 -05002268 unsigned long sense_data_size;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002269
2270 ei = cp->err_info;
Stephen Cameron7fa30302015-01-23 16:44:30 -06002271 cmd = cp->scsi_cmd;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002272 h = cp->h;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06002273 dev = cmd->device->hostdata;
Webb Scalesd9a729f2015-04-23 09:33:27 -05002274 c2 = &h->ioaccel2_cmd_pool[cp->cmdindex];
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002275
2276 scsi_dma_unmap(cmd); /* undo the DMA mappings */
Matt Gatese1f7de02014-02-18 13:55:17 -06002277 if ((cp->cmd_type == CMD_SCSI) &&
Don Brace2b08b3e2015-01-23 16:41:09 -06002278 (le16_to_cpu(cp->Header.SGTotal) > h->max_cmd_sg_entries))
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06002279 hpsa_unmap_sg_chain_block(h, cp);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002280
Webb Scalesd9a729f2015-04-23 09:33:27 -05002281 if ((cp->cmd_type == CMD_IOACCEL2) &&
2282 (c2->sg[0].chain_indicator == IOACCEL2_CHAIN))
2283 hpsa_unmap_ioaccel2_sg_chain_block(h, c2);
2284
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002285 cmd->result = (DID_OK << 16); /* host byte */
2286 cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */
Scott Teelc3497752014-02-18 13:56:34 -06002287
Don Brace03383732015-01-23 16:43:30 -06002288 if (cp->cmd_type == CMD_IOACCEL2 || cp->cmd_type == CMD_IOACCEL1)
2289 atomic_dec(&cp->phys_disk->ioaccel_cmds_out);
2290
Webb Scales25163bd2015-04-23 09:32:00 -05002291 /*
2292 * We check for lockup status here as it may be set for
2293 * CMD_SCSI, CMD_IOACCEL1 and CMD_IOACCEL2 commands by
2294 * fail_all_oustanding_cmds()
2295 */
2296 if (unlikely(ei->CommandStatus == CMD_CTLR_LOCKUP)) {
2297 /* DID_NO_CONNECT will prevent a retry */
2298 cmd->result = DID_NO_CONNECT << 16;
Webb Scales8a0ff922015-04-23 09:34:11 -05002299 return hpsa_cmd_free_and_done(h, cp, cmd);
Webb Scales25163bd2015-04-23 09:32:00 -05002300 }
2301
Webb Scalesd604f532015-04-23 09:35:22 -05002302 if ((unlikely(hpsa_is_pending_event(cp)))) {
2303 if (cp->reset_pending)
2304 return hpsa_cmd_resolve_and_free(h, cp);
2305 if (cp->abort_pending)
2306 return hpsa_cmd_abort_and_free(h, cp, cmd);
2307 }
2308
Scott Teelc3497752014-02-18 13:56:34 -06002309 if (cp->cmd_type == CMD_IOACCEL2)
2310 return process_ioaccel2_completion(h, cp, cmd, dev);
2311
Robert Elliott6aa4c362014-07-03 10:18:19 -05002312 scsi_set_resid(cmd, ei->ResidualCnt);
Webb Scales8a0ff922015-04-23 09:34:11 -05002313 if (ei->CommandStatus == 0)
2314 return hpsa_cmd_free_and_done(h, cp, cmd);
Robert Elliott6aa4c362014-07-03 10:18:19 -05002315
Matt Gatese1f7de02014-02-18 13:55:17 -06002316 /* For I/O accelerator commands, copy over some fields to the normal
2317 * CISS header used below for error handling.
2318 */
2319 if (cp->cmd_type == CMD_IOACCEL1) {
2320 struct io_accel1_cmd *c = &h->ioaccel_cmd_pool[cp->cmdindex];
Don Brace2b08b3e2015-01-23 16:41:09 -06002321 cp->Header.SGList = scsi_sg_count(cmd);
2322 cp->Header.SGTotal = cpu_to_le16(cp->Header.SGList);
2323 cp->Request.CDBLen = le16_to_cpu(c->io_flags) &
2324 IOACCEL1_IOFLAGS_CDBLEN_MASK;
Stephen M. Cameron50a0dec2014-11-14 17:26:59 -06002325 cp->Header.tag = c->tag;
Matt Gatese1f7de02014-02-18 13:55:17 -06002326 memcpy(cp->Header.LUN.LunAddrBytes, c->CISS_LUN, 8);
2327 memcpy(cp->Request.CDB, c->CDB, cp->Request.CDBLen);
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06002328
2329 /* Any RAID offload error results in retry which will use
2330 * the normal I/O path so the controller can handle whatever's
2331 * wrong.
2332 */
2333 if (is_logical_dev_addr_mode(dev->scsi3addr)) {
2334 if (ei->CommandStatus == CMD_IOACCEL_DISABLED)
2335 dev->offload_enabled = 0;
Webb Scalesd604f532015-04-23 09:35:22 -05002336 return hpsa_retry_cmd(h, cp);
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06002337 }
Matt Gatese1f7de02014-02-18 13:55:17 -06002338 }
2339
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002340 /* an error has occurred */
2341 switch (ei->CommandStatus) {
2342
2343 case CMD_TARGET_STATUS:
Stephen Cameron9437ac42015-04-23 09:32:16 -05002344 cmd->result |= ei->ScsiStatus;
2345 /* copy the sense data */
2346 if (SCSI_SENSE_BUFFERSIZE < sizeof(ei->SenseInfo))
2347 sense_data_size = SCSI_SENSE_BUFFERSIZE;
2348 else
2349 sense_data_size = sizeof(ei->SenseInfo);
2350 if (ei->SenseLen < sense_data_size)
2351 sense_data_size = ei->SenseLen;
2352 memcpy(cmd->sense_buffer, ei->SenseInfo, sense_data_size);
2353 if (ei->ScsiStatus)
2354 decode_sense_data(ei->SenseInfo, sense_data_size,
2355 &sense_key, &asc, &ascq);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002356 if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION) {
Matt Gates1d3b3602010-02-04 08:43:00 -06002357 if (sense_key == ABORTED_COMMAND) {
Stephen M. Cameron2e311fb2013-09-23 13:33:41 -05002358 cmd->result |= DID_SOFT_ERROR << 16;
Matt Gates1d3b3602010-02-04 08:43:00 -06002359 break;
2360 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002361 break;
2362 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002363 /* Problem was not a check condition
2364 * Pass it up to the upper layers...
2365 */
2366 if (ei->ScsiStatus) {
2367 dev_warn(&h->pdev->dev, "cp %p has status 0x%x "
2368 "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, "
2369 "Returning result: 0x%x\n",
2370 cp, ei->ScsiStatus,
2371 sense_key, asc, ascq,
2372 cmd->result);
2373 } else { /* scsi status is zero??? How??? */
2374 dev_warn(&h->pdev->dev, "cp %p SCSI status was 0. "
2375 "Returning no connection.\n", cp),
2376
2377 /* Ordinarily, this case should never happen,
2378 * but there is a bug in some released firmware
2379 * revisions that allows it to happen if, for
2380 * example, a 4100 backplane loses power and
2381 * the tape drive is in it. We assume that
2382 * it's a fatal error of some kind because we
2383 * can't show that it wasn't. We will make it
2384 * look like selection timeout since that is
2385 * the most common reason for this to occur,
2386 * and it's severe enough.
2387 */
2388
2389 cmd->result = DID_NO_CONNECT << 16;
2390 }
2391 break;
2392
2393 case CMD_DATA_UNDERRUN: /* let mid layer handle it. */
2394 break;
2395 case CMD_DATA_OVERRUN:
Stephen Cameronf42e81e2015-01-23 16:44:35 -06002396 dev_warn(&h->pdev->dev,
2397 "CDB %16phN data overrun\n", cp->Request.CDB);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002398 break;
2399 case CMD_INVALID: {
2400 /* print_bytes(cp, sizeof(*cp), 1, 0);
2401 print_cmd(cp); */
2402 /* We get CMD_INVALID if you address a non-existent device
2403 * instead of a selection timeout (no response). You will
2404 * see this if you yank out a drive, then try to access it.
2405 * This is kind of a shame because it means that any other
2406 * CMD_INVALID (e.g. driver bug) will get interpreted as a
2407 * missing target. */
2408 cmd->result = DID_NO_CONNECT << 16;
2409 }
2410 break;
2411 case CMD_PROTOCOL_ERR:
Stephen M. Cameron256d0ea2012-09-14 16:34:25 -05002412 cmd->result = DID_ERROR << 16;
Stephen Cameronf42e81e2015-01-23 16:44:35 -06002413 dev_warn(&h->pdev->dev, "CDB %16phN : protocol error\n",
2414 cp->Request.CDB);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002415 break;
2416 case CMD_HARDWARE_ERR:
2417 cmd->result = DID_ERROR << 16;
Stephen Cameronf42e81e2015-01-23 16:44:35 -06002418 dev_warn(&h->pdev->dev, "CDB %16phN : hardware error\n",
2419 cp->Request.CDB);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002420 break;
2421 case CMD_CONNECTION_LOST:
2422 cmd->result = DID_ERROR << 16;
Stephen Cameronf42e81e2015-01-23 16:44:35 -06002423 dev_warn(&h->pdev->dev, "CDB %16phN : connection lost\n",
2424 cp->Request.CDB);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002425 break;
2426 case CMD_ABORTED:
Webb Scalesa58e7e52015-04-23 09:34:16 -05002427 /* Return now to avoid calling scsi_done(). */
2428 return hpsa_cmd_abort_and_free(h, cp, cmd);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002429 case CMD_ABORT_FAILED:
2430 cmd->result = DID_ERROR << 16;
Stephen Cameronf42e81e2015-01-23 16:44:35 -06002431 dev_warn(&h->pdev->dev, "CDB %16phN : abort failed\n",
2432 cp->Request.CDB);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002433 break;
2434 case CMD_UNSOLICITED_ABORT:
Stephen M. Cameronf6e76052011-07-26 11:08:52 -05002435 cmd->result = DID_SOFT_ERROR << 16; /* retry the command */
Stephen Cameronf42e81e2015-01-23 16:44:35 -06002436 dev_warn(&h->pdev->dev, "CDB %16phN : unsolicited abort\n",
2437 cp->Request.CDB);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002438 break;
2439 case CMD_TIMEOUT:
2440 cmd->result = DID_TIME_OUT << 16;
Stephen Cameronf42e81e2015-01-23 16:44:35 -06002441 dev_warn(&h->pdev->dev, "CDB %16phN timed out\n",
2442 cp->Request.CDB);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002443 break;
Stephen M. Cameron1d5e2ed2011-01-07 10:55:48 -06002444 case CMD_UNABORTABLE:
2445 cmd->result = DID_ERROR << 16;
2446 dev_warn(&h->pdev->dev, "Command unabortable\n");
2447 break;
Stephen Cameron9437ac42015-04-23 09:32:16 -05002448 case CMD_TMF_STATUS:
2449 if (hpsa_evaluate_tmf_status(h, cp)) /* TMF failed? */
2450 cmd->result = DID_ERROR << 16;
2451 break;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06002452 case CMD_IOACCEL_DISABLED:
2453 /* This only handles the direct pass-through case since RAID
2454 * offload is handled above. Just attempt a retry.
2455 */
2456 cmd->result = DID_SOFT_ERROR << 16;
2457 dev_warn(&h->pdev->dev,
2458 "cp %p had HP SSD Smart Path error\n", cp);
2459 break;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002460 default:
2461 cmd->result = DID_ERROR << 16;
2462 dev_warn(&h->pdev->dev, "cp %p returned unknown status %x\n",
2463 cp, ei->CommandStatus);
2464 }
Webb Scales8a0ff922015-04-23 09:34:11 -05002465
2466 return hpsa_cmd_free_and_done(h, cp, cmd);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002467}
2468
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002469static void hpsa_pci_unmap(struct pci_dev *pdev,
2470 struct CommandList *c, int sg_used, int data_direction)
2471{
2472 int i;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002473
Stephen M. Cameron50a0dec2014-11-14 17:26:59 -06002474 for (i = 0; i < sg_used; i++)
2475 pci_unmap_single(pdev, (dma_addr_t) le64_to_cpu(c->SG[i].Addr),
2476 le32_to_cpu(c->SG[i].Len),
2477 data_direction);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002478}
2479
Stephen M. Camerona2dac132013-02-20 11:24:41 -06002480static int hpsa_map_one(struct pci_dev *pdev,
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002481 struct CommandList *cp,
2482 unsigned char *buf,
2483 size_t buflen,
2484 int data_direction)
2485{
Stephen M. Cameron01a02ff2010-02-04 08:41:33 -06002486 u64 addr64;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002487
2488 if (buflen == 0 || data_direction == PCI_DMA_NONE) {
2489 cp->Header.SGList = 0;
Stephen M. Cameron50a0dec2014-11-14 17:26:59 -06002490 cp->Header.SGTotal = cpu_to_le16(0);
Stephen M. Camerona2dac132013-02-20 11:24:41 -06002491 return 0;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002492 }
2493
Stephen M. Cameron50a0dec2014-11-14 17:26:59 -06002494 addr64 = pci_map_single(pdev, buf, buflen, data_direction);
Shuah Khaneceaae12013-02-20 11:24:34 -06002495 if (dma_mapping_error(&pdev->dev, addr64)) {
Stephen M. Camerona2dac132013-02-20 11:24:41 -06002496 /* Prevent subsequent unmap of something never mapped */
Shuah Khaneceaae12013-02-20 11:24:34 -06002497 cp->Header.SGList = 0;
Stephen M. Cameron50a0dec2014-11-14 17:26:59 -06002498 cp->Header.SGTotal = cpu_to_le16(0);
Stephen M. Camerona2dac132013-02-20 11:24:41 -06002499 return -1;
Shuah Khaneceaae12013-02-20 11:24:34 -06002500 }
Stephen M. Cameron50a0dec2014-11-14 17:26:59 -06002501 cp->SG[0].Addr = cpu_to_le64(addr64);
2502 cp->SG[0].Len = cpu_to_le32(buflen);
2503 cp->SG[0].Ext = cpu_to_le32(HPSA_SG_LAST); /* we are not chaining */
2504 cp->Header.SGList = 1; /* no. SGs contig in this cmd */
2505 cp->Header.SGTotal = cpu_to_le16(1); /* total sgs in cmd list */
Stephen M. Camerona2dac132013-02-20 11:24:41 -06002506 return 0;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002507}
2508
Webb Scales25163bd2015-04-23 09:32:00 -05002509#define NO_TIMEOUT ((unsigned long) -1)
2510#define DEFAULT_TIMEOUT 30000 /* milliseconds */
2511static int hpsa_scsi_do_simple_cmd_core(struct ctlr_info *h,
2512 struct CommandList *c, int reply_queue, unsigned long timeout_msecs)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002513{
2514 DECLARE_COMPLETION_ONSTACK(wait);
2515
2516 c->waiting = &wait;
Webb Scales25163bd2015-04-23 09:32:00 -05002517 __enqueue_cmd_and_start_io(h, c, reply_queue);
2518 if (timeout_msecs == NO_TIMEOUT) {
2519 /* TODO: get rid of this no-timeout thing */
2520 wait_for_completion_io(&wait);
2521 return IO_OK;
2522 }
2523 if (!wait_for_completion_io_timeout(&wait,
2524 msecs_to_jiffies(timeout_msecs))) {
2525 dev_warn(&h->pdev->dev, "Command timed out.\n");
2526 return -ETIMEDOUT;
2527 }
2528 return IO_OK;
2529}
2530
2531static int hpsa_scsi_do_simple_cmd(struct ctlr_info *h, struct CommandList *c,
2532 int reply_queue, unsigned long timeout_msecs)
2533{
2534 if (unlikely(lockup_detected(h))) {
2535 c->err_info->CommandStatus = CMD_CTLR_LOCKUP;
2536 return IO_OK;
2537 }
2538 return hpsa_scsi_do_simple_cmd_core(h, c, reply_queue, timeout_msecs);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002539}
2540
Stephen M. Cameron094963d2014-05-29 10:53:18 -05002541static u32 lockup_detected(struct ctlr_info *h)
2542{
2543 int cpu;
2544 u32 rc, *lockup_detected;
2545
2546 cpu = get_cpu();
2547 lockup_detected = per_cpu_ptr(h->lockup_detected, cpu);
2548 rc = *lockup_detected;
2549 put_cpu();
2550 return rc;
2551}
2552
Stephen M. Cameron9c2fc162012-05-01 11:42:40 -05002553#define MAX_DRIVER_CMD_RETRIES 25
Webb Scales25163bd2015-04-23 09:32:00 -05002554static int hpsa_scsi_do_simple_cmd_with_retry(struct ctlr_info *h,
2555 struct CommandList *c, int data_direction, unsigned long timeout_msecs)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002556{
Stephen M. Cameron9c2fc162012-05-01 11:42:40 -05002557 int backoff_time = 10, retry_count = 0;
Webb Scales25163bd2015-04-23 09:32:00 -05002558 int rc;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002559
2560 do {
Joe Perches7630abd2011-05-08 23:32:40 -07002561 memset(c->err_info, 0, sizeof(*c->err_info));
Webb Scales25163bd2015-04-23 09:32:00 -05002562 rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE,
2563 timeout_msecs);
2564 if (rc)
2565 break;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002566 retry_count++;
Stephen M. Cameron9c2fc162012-05-01 11:42:40 -05002567 if (retry_count > 3) {
2568 msleep(backoff_time);
2569 if (backoff_time < 1000)
2570 backoff_time *= 2;
2571 }
Matt Bondurant852af202012-05-01 11:42:35 -05002572 } while ((check_for_unit_attention(h, c) ||
Stephen M. Cameron9c2fc162012-05-01 11:42:40 -05002573 check_for_busy(h, c)) &&
2574 retry_count <= MAX_DRIVER_CMD_RETRIES);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002575 hpsa_pci_unmap(h->pdev, c, 1, data_direction);
Webb Scales25163bd2015-04-23 09:32:00 -05002576 if (retry_count > MAX_DRIVER_CMD_RETRIES)
2577 rc = -EIO;
2578 return rc;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002579}
2580
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06002581static void hpsa_print_cmd(struct ctlr_info *h, char *txt,
2582 struct CommandList *c)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002583{
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06002584 const u8 *cdb = c->Request.CDB;
2585 const u8 *lun = c->Header.LUN.LunAddrBytes;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002586
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06002587 dev_warn(&h->pdev->dev, "%s: LUN:%02x%02x%02x%02x%02x%02x%02x%02x"
2588 " CDB:%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x\n",
2589 txt, lun[0], lun[1], lun[2], lun[3],
2590 lun[4], lun[5], lun[6], lun[7],
2591 cdb[0], cdb[1], cdb[2], cdb[3],
2592 cdb[4], cdb[5], cdb[6], cdb[7],
2593 cdb[8], cdb[9], cdb[10], cdb[11],
2594 cdb[12], cdb[13], cdb[14], cdb[15]);
2595}
2596
2597static void hpsa_scsi_interpret_error(struct ctlr_info *h,
2598 struct CommandList *cp)
2599{
2600 const struct ErrorInfo *ei = cp->err_info;
2601 struct device *d = &cp->h->pdev->dev;
Stephen Cameron9437ac42015-04-23 09:32:16 -05002602 u8 sense_key, asc, ascq;
2603 int sense_len;
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06002604
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002605 switch (ei->CommandStatus) {
2606 case CMD_TARGET_STATUS:
Stephen Cameron9437ac42015-04-23 09:32:16 -05002607 if (ei->SenseLen > sizeof(ei->SenseInfo))
2608 sense_len = sizeof(ei->SenseInfo);
2609 else
2610 sense_len = ei->SenseLen;
2611 decode_sense_data(ei->SenseInfo, sense_len,
2612 &sense_key, &asc, &ascq);
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06002613 hpsa_print_cmd(h, "SCSI status", cp);
2614 if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION)
Stephen Cameron9437ac42015-04-23 09:32:16 -05002615 dev_warn(d, "SCSI Status = 02, Sense key = 0x%02x, ASC = 0x%02x, ASCQ = 0x%02x\n",
2616 sense_key, asc, ascq);
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06002617 else
Stephen Cameron9437ac42015-04-23 09:32:16 -05002618 dev_warn(d, "SCSI Status = 0x%02x\n", ei->ScsiStatus);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002619 if (ei->ScsiStatus == 0)
2620 dev_warn(d, "SCSI status is abnormally zero. "
2621 "(probably indicates selection timeout "
2622 "reported incorrectly due to a known "
2623 "firmware bug, circa July, 2001.)\n");
2624 break;
2625 case CMD_DATA_UNDERRUN: /* let mid layer handle it. */
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002626 break;
2627 case CMD_DATA_OVERRUN:
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06002628 hpsa_print_cmd(h, "overrun condition", cp);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002629 break;
2630 case CMD_INVALID: {
2631 /* controller unfortunately reports SCSI passthru's
2632 * to non-existent targets as invalid commands.
2633 */
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06002634 hpsa_print_cmd(h, "invalid command", cp);
2635 dev_warn(d, "probably means device no longer present\n");
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002636 }
2637 break;
2638 case CMD_PROTOCOL_ERR:
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06002639 hpsa_print_cmd(h, "protocol error", cp);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002640 break;
2641 case CMD_HARDWARE_ERR:
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06002642 hpsa_print_cmd(h, "hardware error", cp);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002643 break;
2644 case CMD_CONNECTION_LOST:
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06002645 hpsa_print_cmd(h, "connection lost", cp);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002646 break;
2647 case CMD_ABORTED:
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06002648 hpsa_print_cmd(h, "aborted", cp);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002649 break;
2650 case CMD_ABORT_FAILED:
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06002651 hpsa_print_cmd(h, "abort failed", cp);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002652 break;
2653 case CMD_UNSOLICITED_ABORT:
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06002654 hpsa_print_cmd(h, "unsolicited abort", cp);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002655 break;
2656 case CMD_TIMEOUT:
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06002657 hpsa_print_cmd(h, "timed out", cp);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002658 break;
Stephen M. Cameron1d5e2ed2011-01-07 10:55:48 -06002659 case CMD_UNABORTABLE:
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06002660 hpsa_print_cmd(h, "unabortable", cp);
Stephen M. Cameron1d5e2ed2011-01-07 10:55:48 -06002661 break;
Webb Scales25163bd2015-04-23 09:32:00 -05002662 case CMD_CTLR_LOCKUP:
2663 hpsa_print_cmd(h, "controller lockup detected", cp);
2664 break;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002665 default:
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06002666 hpsa_print_cmd(h, "unknown status", cp);
2667 dev_warn(d, "Unknown command status %x\n",
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002668 ei->CommandStatus);
2669 }
2670}
2671
2672static int hpsa_scsi_do_inquiry(struct ctlr_info *h, unsigned char *scsi3addr,
Stephen M. Cameronb7bb24e2014-02-18 13:57:11 -06002673 u16 page, unsigned char *buf,
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002674 unsigned char bufsize)
2675{
2676 int rc = IO_OK;
2677 struct CommandList *c;
2678 struct ErrorInfo *ei;
2679
Stephen Cameron45fcb862015-01-23 16:43:04 -06002680 c = cmd_alloc(h);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002681
Stephen M. Camerona2dac132013-02-20 11:24:41 -06002682 if (fill_cmd(c, HPSA_INQUIRY, h, buf, bufsize,
2683 page, scsi3addr, TYPE_CMD)) {
2684 rc = -1;
2685 goto out;
2686 }
Webb Scales25163bd2015-04-23 09:32:00 -05002687 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
2688 PCI_DMA_FROMDEVICE, NO_TIMEOUT);
2689 if (rc)
2690 goto out;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002691 ei = c->err_info;
2692 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06002693 hpsa_scsi_interpret_error(h, c);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002694 rc = -1;
2695 }
Stephen M. Camerona2dac132013-02-20 11:24:41 -06002696out:
Stephen Cameron45fcb862015-01-23 16:43:04 -06002697 cmd_free(h, c);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002698 return rc;
2699}
2700
Scott Teelbf711ac2014-02-18 13:56:39 -06002701static int hpsa_send_reset(struct ctlr_info *h, unsigned char *scsi3addr,
Webb Scales25163bd2015-04-23 09:32:00 -05002702 u8 reset_type, int reply_queue)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002703{
2704 int rc = IO_OK;
2705 struct CommandList *c;
2706 struct ErrorInfo *ei;
2707
Stephen Cameron45fcb862015-01-23 16:43:04 -06002708 c = cmd_alloc(h);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002709
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002710
Stephen M. Camerona2dac132013-02-20 11:24:41 -06002711 /* fill_cmd can't fail here, no data buffer to map. */
Scott Teelbf711ac2014-02-18 13:56:39 -06002712 (void) fill_cmd(c, HPSA_DEVICE_RESET_MSG, h, NULL, 0, 0,
2713 scsi3addr, TYPE_MSG);
2714 c->Request.CDB[1] = reset_type; /* fill_cmd defaults to LUN reset */
Webb Scales25163bd2015-04-23 09:32:00 -05002715 rc = hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT);
2716 if (rc) {
2717 dev_warn(&h->pdev->dev, "Failed to send reset command\n");
2718 goto out;
2719 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002720 /* no unmap needed here because no data xfer. */
2721
2722 ei = c->err_info;
2723 if (ei->CommandStatus != 0) {
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06002724 hpsa_scsi_interpret_error(h, c);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002725 rc = -1;
2726 }
Webb Scales25163bd2015-04-23 09:32:00 -05002727out:
Stephen Cameron45fcb862015-01-23 16:43:04 -06002728 cmd_free(h, c);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002729 return rc;
2730}
2731
Webb Scalesd604f532015-04-23 09:35:22 -05002732static bool hpsa_cmd_dev_match(struct ctlr_info *h, struct CommandList *c,
2733 struct hpsa_scsi_dev_t *dev,
2734 unsigned char *scsi3addr)
2735{
2736 int i;
2737 bool match = false;
2738 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
2739 struct hpsa_tmf_struct *ac = (struct hpsa_tmf_struct *) c2;
2740
2741 if (hpsa_is_cmd_idle(c))
2742 return false;
2743
2744 switch (c->cmd_type) {
2745 case CMD_SCSI:
2746 case CMD_IOCTL_PEND:
2747 match = !memcmp(scsi3addr, &c->Header.LUN.LunAddrBytes,
2748 sizeof(c->Header.LUN.LunAddrBytes));
2749 break;
2750
2751 case CMD_IOACCEL1:
2752 case CMD_IOACCEL2:
2753 if (c->phys_disk == dev) {
2754 /* HBA mode match */
2755 match = true;
2756 } else {
2757 /* Possible RAID mode -- check each phys dev. */
2758 /* FIXME: Do we need to take out a lock here? If
2759 * so, we could just call hpsa_get_pdisk_of_ioaccel2()
2760 * instead. */
2761 for (i = 0; i < dev->nphysical_disks && !match; i++) {
2762 /* FIXME: an alternate test might be
2763 *
2764 * match = dev->phys_disk[i]->ioaccel_handle
2765 * == c2->scsi_nexus; */
2766 match = dev->phys_disk[i] == c->phys_disk;
2767 }
2768 }
2769 break;
2770
2771 case IOACCEL2_TMF:
2772 for (i = 0; i < dev->nphysical_disks && !match; i++) {
2773 match = dev->phys_disk[i]->ioaccel_handle ==
2774 le32_to_cpu(ac->it_nexus);
2775 }
2776 break;
2777
2778 case 0: /* The command is in the middle of being initialized. */
2779 match = false;
2780 break;
2781
2782 default:
2783 dev_err(&h->pdev->dev, "unexpected cmd_type: %d\n",
2784 c->cmd_type);
2785 BUG();
2786 }
2787
2788 return match;
2789}
2790
2791static int hpsa_do_reset(struct ctlr_info *h, struct hpsa_scsi_dev_t *dev,
2792 unsigned char *scsi3addr, u8 reset_type, int reply_queue)
2793{
2794 int i;
2795 int rc = 0;
2796
2797 /* We can really only handle one reset at a time */
2798 if (mutex_lock_interruptible(&h->reset_mutex) == -EINTR) {
2799 dev_warn(&h->pdev->dev, "concurrent reset wait interrupted.\n");
2800 return -EINTR;
2801 }
2802
2803 BUG_ON(atomic_read(&dev->reset_cmds_out) != 0);
2804
2805 for (i = 0; i < h->nr_cmds; i++) {
2806 struct CommandList *c = h->cmd_pool + i;
2807 int refcount = atomic_inc_return(&c->refcount);
2808
2809 if (refcount > 1 && hpsa_cmd_dev_match(h, c, dev, scsi3addr)) {
2810 unsigned long flags;
2811
2812 /*
2813 * Mark the target command as having a reset pending,
2814 * then lock a lock so that the command cannot complete
2815 * while we're considering it. If the command is not
2816 * idle then count it; otherwise revoke the event.
2817 */
2818 c->reset_pending = dev;
2819 spin_lock_irqsave(&h->lock, flags); /* Implied MB */
2820 if (!hpsa_is_cmd_idle(c))
2821 atomic_inc(&dev->reset_cmds_out);
2822 else
2823 c->reset_pending = NULL;
2824 spin_unlock_irqrestore(&h->lock, flags);
2825 }
2826
2827 cmd_free(h, c);
2828 }
2829
2830 rc = hpsa_send_reset(h, scsi3addr, reset_type, reply_queue);
2831 if (!rc)
2832 wait_event(h->event_sync_wait_queue,
2833 atomic_read(&dev->reset_cmds_out) == 0 ||
2834 lockup_detected(h));
2835
2836 if (unlikely(lockup_detected(h))) {
Don Brace77678d32015-07-18 11:12:22 -05002837 dev_warn(&h->pdev->dev,
2838 "Controller lockup detected during reset wait\n");
2839 rc = -ENODEV;
2840 }
Webb Scalesd604f532015-04-23 09:35:22 -05002841
2842 if (unlikely(rc))
2843 atomic_set(&dev->reset_cmds_out, 0);
2844
2845 mutex_unlock(&h->reset_mutex);
2846 return rc;
2847}
2848
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002849static void hpsa_get_raid_level(struct ctlr_info *h,
2850 unsigned char *scsi3addr, unsigned char *raid_level)
2851{
2852 int rc;
2853 unsigned char *buf;
2854
2855 *raid_level = RAID_UNKNOWN;
2856 buf = kzalloc(64, GFP_KERNEL);
2857 if (!buf)
2858 return;
Stephen M. Cameronb7bb24e2014-02-18 13:57:11 -06002859 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | 0xC1, buf, 64);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08002860 if (rc == 0)
2861 *raid_level = buf[8];
2862 if (*raid_level > RAID_UNKNOWN)
2863 *raid_level = RAID_UNKNOWN;
2864 kfree(buf);
2865 return;
2866}
2867
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06002868#define HPSA_MAP_DEBUG
2869#ifdef HPSA_MAP_DEBUG
2870static void hpsa_debug_map_buff(struct ctlr_info *h, int rc,
2871 struct raid_map_data *map_buff)
2872{
2873 struct raid_map_disk_data *dd = &map_buff->data[0];
2874 int map, row, col;
2875 u16 map_cnt, row_cnt, disks_per_row;
2876
2877 if (rc != 0)
2878 return;
2879
Stephen M. Cameron2ba8bfc2014-02-18 13:57:52 -06002880 /* Show details only if debugging has been activated. */
2881 if (h->raid_offload_debug < 2)
2882 return;
2883
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06002884 dev_info(&h->pdev->dev, "structure_size = %u\n",
2885 le32_to_cpu(map_buff->structure_size));
2886 dev_info(&h->pdev->dev, "volume_blk_size = %u\n",
2887 le32_to_cpu(map_buff->volume_blk_size));
2888 dev_info(&h->pdev->dev, "volume_blk_cnt = 0x%llx\n",
2889 le64_to_cpu(map_buff->volume_blk_cnt));
2890 dev_info(&h->pdev->dev, "physicalBlockShift = %u\n",
2891 map_buff->phys_blk_shift);
2892 dev_info(&h->pdev->dev, "parity_rotation_shift = %u\n",
2893 map_buff->parity_rotation_shift);
2894 dev_info(&h->pdev->dev, "strip_size = %u\n",
2895 le16_to_cpu(map_buff->strip_size));
2896 dev_info(&h->pdev->dev, "disk_starting_blk = 0x%llx\n",
2897 le64_to_cpu(map_buff->disk_starting_blk));
2898 dev_info(&h->pdev->dev, "disk_blk_cnt = 0x%llx\n",
2899 le64_to_cpu(map_buff->disk_blk_cnt));
2900 dev_info(&h->pdev->dev, "data_disks_per_row = %u\n",
2901 le16_to_cpu(map_buff->data_disks_per_row));
2902 dev_info(&h->pdev->dev, "metadata_disks_per_row = %u\n",
2903 le16_to_cpu(map_buff->metadata_disks_per_row));
2904 dev_info(&h->pdev->dev, "row_cnt = %u\n",
2905 le16_to_cpu(map_buff->row_cnt));
2906 dev_info(&h->pdev->dev, "layout_map_count = %u\n",
2907 le16_to_cpu(map_buff->layout_map_count));
Don Brace2b08b3e2015-01-23 16:41:09 -06002908 dev_info(&h->pdev->dev, "flags = 0x%x\n",
Scott Teeldd0e19f2014-02-18 13:57:31 -06002909 le16_to_cpu(map_buff->flags));
Don Brace2b08b3e2015-01-23 16:41:09 -06002910 dev_info(&h->pdev->dev, "encrypytion = %s\n",
2911 le16_to_cpu(map_buff->flags) &
2912 RAID_MAP_FLAG_ENCRYPT_ON ? "ON" : "OFF");
Scott Teeldd0e19f2014-02-18 13:57:31 -06002913 dev_info(&h->pdev->dev, "dekindex = %u\n",
2914 le16_to_cpu(map_buff->dekindex));
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06002915 map_cnt = le16_to_cpu(map_buff->layout_map_count);
2916 for (map = 0; map < map_cnt; map++) {
2917 dev_info(&h->pdev->dev, "Map%u:\n", map);
2918 row_cnt = le16_to_cpu(map_buff->row_cnt);
2919 for (row = 0; row < row_cnt; row++) {
2920 dev_info(&h->pdev->dev, " Row%u:\n", row);
2921 disks_per_row =
2922 le16_to_cpu(map_buff->data_disks_per_row);
2923 for (col = 0; col < disks_per_row; col++, dd++)
2924 dev_info(&h->pdev->dev,
2925 " D%02u: h=0x%04x xor=%u,%u\n",
2926 col, dd->ioaccel_handle,
2927 dd->xor_mult[0], dd->xor_mult[1]);
2928 disks_per_row =
2929 le16_to_cpu(map_buff->metadata_disks_per_row);
2930 for (col = 0; col < disks_per_row; col++, dd++)
2931 dev_info(&h->pdev->dev,
2932 " M%02u: h=0x%04x xor=%u,%u\n",
2933 col, dd->ioaccel_handle,
2934 dd->xor_mult[0], dd->xor_mult[1]);
2935 }
2936 }
2937}
2938#else
2939static void hpsa_debug_map_buff(__attribute__((unused)) struct ctlr_info *h,
2940 __attribute__((unused)) int rc,
2941 __attribute__((unused)) struct raid_map_data *map_buff)
2942{
2943}
2944#endif
2945
2946static int hpsa_get_raid_map(struct ctlr_info *h,
2947 unsigned char *scsi3addr, struct hpsa_scsi_dev_t *this_device)
2948{
2949 int rc = 0;
2950 struct CommandList *c;
2951 struct ErrorInfo *ei;
2952
Stephen Cameron45fcb862015-01-23 16:43:04 -06002953 c = cmd_alloc(h);
Robert Elliottbf43caf2015-04-23 09:33:38 -05002954
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06002955 if (fill_cmd(c, HPSA_GET_RAID_MAP, h, &this_device->raid_map,
2956 sizeof(this_device->raid_map), 0,
2957 scsi3addr, TYPE_CMD)) {
Robert Elliott2dd02d72015-04-23 09:33:43 -05002958 dev_warn(&h->pdev->dev, "hpsa_get_raid_map fill_cmd failed\n");
2959 cmd_free(h, c);
2960 return -1;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06002961 }
Webb Scales25163bd2015-04-23 09:32:00 -05002962 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
2963 PCI_DMA_FROMDEVICE, NO_TIMEOUT);
2964 if (rc)
2965 goto out;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06002966 ei = c->err_info;
2967 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06002968 hpsa_scsi_interpret_error(h, c);
Webb Scales25163bd2015-04-23 09:32:00 -05002969 rc = -1;
2970 goto out;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06002971 }
Stephen Cameron45fcb862015-01-23 16:43:04 -06002972 cmd_free(h, c);
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06002973
2974 /* @todo in the future, dynamically allocate RAID map memory */
2975 if (le32_to_cpu(this_device->raid_map.structure_size) >
2976 sizeof(this_device->raid_map)) {
2977 dev_warn(&h->pdev->dev, "RAID map size is too large!\n");
2978 rc = -1;
2979 }
2980 hpsa_debug_map_buff(h, rc, &this_device->raid_map);
2981 return rc;
Webb Scales25163bd2015-04-23 09:32:00 -05002982out:
2983 cmd_free(h, c);
2984 return rc;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06002985}
2986
Don Brace03383732015-01-23 16:43:30 -06002987static int hpsa_bmic_id_physical_device(struct ctlr_info *h,
2988 unsigned char scsi3addr[], u16 bmic_device_index,
2989 struct bmic_identify_physical_device *buf, size_t bufsize)
2990{
2991 int rc = IO_OK;
2992 struct CommandList *c;
2993 struct ErrorInfo *ei;
2994
2995 c = cmd_alloc(h);
2996 rc = fill_cmd(c, BMIC_IDENTIFY_PHYSICAL_DEVICE, h, buf, bufsize,
2997 0, RAID_CTLR_LUNID, TYPE_CMD);
2998 if (rc)
2999 goto out;
3000
3001 c->Request.CDB[2] = bmic_device_index & 0xff;
3002 c->Request.CDB[9] = (bmic_device_index >> 8) & 0xff;
3003
Webb Scales25163bd2015-04-23 09:32:00 -05003004 hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE,
3005 NO_TIMEOUT);
Don Brace03383732015-01-23 16:43:30 -06003006 ei = c->err_info;
3007 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
3008 hpsa_scsi_interpret_error(h, c);
3009 rc = -1;
3010 }
3011out:
3012 cmd_free(h, c);
3013 return rc;
3014}
3015
Stephen M. Cameron1b70150a2014-02-18 13:57:16 -06003016static int hpsa_vpd_page_supported(struct ctlr_info *h,
3017 unsigned char scsi3addr[], u8 page)
3018{
3019 int rc;
3020 int i;
3021 int pages;
3022 unsigned char *buf, bufsize;
3023
3024 buf = kzalloc(256, GFP_KERNEL);
3025 if (!buf)
3026 return 0;
3027
3028 /* Get the size of the page list first */
3029 rc = hpsa_scsi_do_inquiry(h, scsi3addr,
3030 VPD_PAGE | HPSA_VPD_SUPPORTED_PAGES,
3031 buf, HPSA_VPD_HEADER_SZ);
3032 if (rc != 0)
3033 goto exit_unsupported;
3034 pages = buf[3];
3035 if ((pages + HPSA_VPD_HEADER_SZ) <= 255)
3036 bufsize = pages + HPSA_VPD_HEADER_SZ;
3037 else
3038 bufsize = 255;
3039
3040 /* Get the whole VPD page list */
3041 rc = hpsa_scsi_do_inquiry(h, scsi3addr,
3042 VPD_PAGE | HPSA_VPD_SUPPORTED_PAGES,
3043 buf, bufsize);
3044 if (rc != 0)
3045 goto exit_unsupported;
3046
3047 pages = buf[3];
3048 for (i = 1; i <= pages; i++)
3049 if (buf[3 + i] == page)
3050 goto exit_supported;
3051exit_unsupported:
3052 kfree(buf);
3053 return 0;
3054exit_supported:
3055 kfree(buf);
3056 return 1;
3057}
3058
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06003059static void hpsa_get_ioaccel_status(struct ctlr_info *h,
3060 unsigned char *scsi3addr, struct hpsa_scsi_dev_t *this_device)
3061{
3062 int rc;
3063 unsigned char *buf;
3064 u8 ioaccel_status;
3065
3066 this_device->offload_config = 0;
3067 this_device->offload_enabled = 0;
Stephen Cameron41ce4c32015-04-23 09:31:47 -05003068 this_device->offload_to_be_enabled = 0;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06003069
3070 buf = kzalloc(64, GFP_KERNEL);
3071 if (!buf)
3072 return;
Stephen M. Cameron1b70150a2014-02-18 13:57:16 -06003073 if (!hpsa_vpd_page_supported(h, scsi3addr, HPSA_VPD_LV_IOACCEL_STATUS))
3074 goto out;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06003075 rc = hpsa_scsi_do_inquiry(h, scsi3addr,
Stephen M. Cameronb7bb24e2014-02-18 13:57:11 -06003076 VPD_PAGE | HPSA_VPD_LV_IOACCEL_STATUS, buf, 64);
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06003077 if (rc != 0)
3078 goto out;
3079
3080#define IOACCEL_STATUS_BYTE 4
3081#define OFFLOAD_CONFIGURED_BIT 0x01
3082#define OFFLOAD_ENABLED_BIT 0x02
3083 ioaccel_status = buf[IOACCEL_STATUS_BYTE];
3084 this_device->offload_config =
3085 !!(ioaccel_status & OFFLOAD_CONFIGURED_BIT);
3086 if (this_device->offload_config) {
3087 this_device->offload_enabled =
3088 !!(ioaccel_status & OFFLOAD_ENABLED_BIT);
3089 if (hpsa_get_raid_map(h, scsi3addr, this_device))
3090 this_device->offload_enabled = 0;
3091 }
Stephen Cameron41ce4c32015-04-23 09:31:47 -05003092 this_device->offload_to_be_enabled = this_device->offload_enabled;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06003093out:
3094 kfree(buf);
3095 return;
3096}
3097
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003098/* Get the device id from inquiry page 0x83 */
3099static int hpsa_get_device_id(struct ctlr_info *h, unsigned char *scsi3addr,
3100 unsigned char *device_id, int buflen)
3101{
3102 int rc;
3103 unsigned char *buf;
3104
3105 if (buflen > 16)
3106 buflen = 16;
3107 buf = kzalloc(64, GFP_KERNEL);
3108 if (!buf)
Stephen M. Camerona84d7942014-05-29 10:54:20 -05003109 return -ENOMEM;
Stephen M. Cameronb7bb24e2014-02-18 13:57:11 -06003110 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | 0x83, buf, 64);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003111 if (rc == 0)
3112 memcpy(device_id, &buf[8], buflen);
3113 kfree(buf);
3114 return rc != 0;
3115}
3116
3117static int hpsa_scsi_do_report_luns(struct ctlr_info *h, int logical,
Don Brace03383732015-01-23 16:43:30 -06003118 void *buf, int bufsize,
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003119 int extended_response)
3120{
3121 int rc = IO_OK;
3122 struct CommandList *c;
3123 unsigned char scsi3addr[8];
3124 struct ErrorInfo *ei;
3125
Stephen Cameron45fcb862015-01-23 16:43:04 -06003126 c = cmd_alloc(h);
Robert Elliottbf43caf2015-04-23 09:33:38 -05003127
Stephen M. Camerone89c0ae2010-02-04 08:42:04 -06003128 /* address the controller */
3129 memset(scsi3addr, 0, sizeof(scsi3addr));
Stephen M. Camerona2dac132013-02-20 11:24:41 -06003130 if (fill_cmd(c, logical ? HPSA_REPORT_LOG : HPSA_REPORT_PHYS, h,
3131 buf, bufsize, 0, scsi3addr, TYPE_CMD)) {
3132 rc = -1;
3133 goto out;
3134 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003135 if (extended_response)
3136 c->Request.CDB[1] = extended_response;
Webb Scales25163bd2015-04-23 09:32:00 -05003137 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
3138 PCI_DMA_FROMDEVICE, NO_TIMEOUT);
3139 if (rc)
3140 goto out;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003141 ei = c->err_info;
3142 if (ei->CommandStatus != 0 &&
3143 ei->CommandStatus != CMD_DATA_UNDERRUN) {
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06003144 hpsa_scsi_interpret_error(h, c);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003145 rc = -1;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06003146 } else {
Don Brace03383732015-01-23 16:43:30 -06003147 struct ReportLUNdata *rld = buf;
3148
3149 if (rld->extended_response_flag != extended_response) {
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06003150 dev_err(&h->pdev->dev,
3151 "report luns requested format %u, got %u\n",
3152 extended_response,
Don Brace03383732015-01-23 16:43:30 -06003153 rld->extended_response_flag);
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06003154 rc = -1;
3155 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003156 }
Stephen M. Camerona2dac132013-02-20 11:24:41 -06003157out:
Stephen Cameron45fcb862015-01-23 16:43:04 -06003158 cmd_free(h, c);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003159 return rc;
3160}
3161
3162static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info *h,
Don Brace03383732015-01-23 16:43:30 -06003163 struct ReportExtendedLUNdata *buf, int bufsize)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003164{
Don Brace03383732015-01-23 16:43:30 -06003165 return hpsa_scsi_do_report_luns(h, 0, buf, bufsize,
3166 HPSA_REPORT_PHYS_EXTENDED);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003167}
3168
3169static inline int hpsa_scsi_do_report_log_luns(struct ctlr_info *h,
3170 struct ReportLUNdata *buf, int bufsize)
3171{
3172 return hpsa_scsi_do_report_luns(h, 1, buf, bufsize, 0);
3173}
3174
3175static inline void hpsa_set_bus_target_lun(struct hpsa_scsi_dev_t *device,
3176 int bus, int target, int lun)
3177{
3178 device->bus = bus;
3179 device->target = target;
3180 device->lun = lun;
3181}
3182
Stephen M. Cameron98465902014-02-21 16:25:00 -06003183/* Use VPD inquiry to get details of volume status */
3184static int hpsa_get_volume_status(struct ctlr_info *h,
3185 unsigned char scsi3addr[])
3186{
3187 int rc;
3188 int status;
3189 int size;
3190 unsigned char *buf;
3191
3192 buf = kzalloc(64, GFP_KERNEL);
3193 if (!buf)
3194 return HPSA_VPD_LV_STATUS_UNSUPPORTED;
3195
3196 /* Does controller have VPD for logical volume status? */
Stephen M. Cameron24a4b072014-05-29 10:54:10 -05003197 if (!hpsa_vpd_page_supported(h, scsi3addr, HPSA_VPD_LV_STATUS))
Stephen M. Cameron98465902014-02-21 16:25:00 -06003198 goto exit_failed;
Stephen M. Cameron98465902014-02-21 16:25:00 -06003199
3200 /* Get the size of the VPD return buffer */
3201 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | HPSA_VPD_LV_STATUS,
3202 buf, HPSA_VPD_HEADER_SZ);
Stephen M. Cameron24a4b072014-05-29 10:54:10 -05003203 if (rc != 0)
Stephen M. Cameron98465902014-02-21 16:25:00 -06003204 goto exit_failed;
Stephen M. Cameron98465902014-02-21 16:25:00 -06003205 size = buf[3];
3206
3207 /* Now get the whole VPD buffer */
3208 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | HPSA_VPD_LV_STATUS,
3209 buf, size + HPSA_VPD_HEADER_SZ);
Stephen M. Cameron24a4b072014-05-29 10:54:10 -05003210 if (rc != 0)
Stephen M. Cameron98465902014-02-21 16:25:00 -06003211 goto exit_failed;
Stephen M. Cameron98465902014-02-21 16:25:00 -06003212 status = buf[4]; /* status byte */
3213
3214 kfree(buf);
3215 return status;
3216exit_failed:
3217 kfree(buf);
3218 return HPSA_VPD_LV_STATUS_UNSUPPORTED;
3219}
3220
3221/* Determine offline status of a volume.
3222 * Return either:
3223 * 0 (not offline)
Stephen M. Cameron67955ba2014-05-29 10:54:25 -05003224 * 0xff (offline for unknown reasons)
Stephen M. Cameron98465902014-02-21 16:25:00 -06003225 * # (integer code indicating one of several NOT READY states
3226 * describing why a volume is to be kept offline)
3227 */
Stephen M. Cameron67955ba2014-05-29 10:54:25 -05003228static int hpsa_volume_offline(struct ctlr_info *h,
Stephen M. Cameron98465902014-02-21 16:25:00 -06003229 unsigned char scsi3addr[])
3230{
3231 struct CommandList *c;
Stephen Cameron9437ac42015-04-23 09:32:16 -05003232 unsigned char *sense;
3233 u8 sense_key, asc, ascq;
3234 int sense_len;
Webb Scales25163bd2015-04-23 09:32:00 -05003235 int rc, ldstat = 0;
Stephen M. Cameron98465902014-02-21 16:25:00 -06003236 u16 cmd_status;
3237 u8 scsi_status;
3238#define ASC_LUN_NOT_READY 0x04
3239#define ASCQ_LUN_NOT_READY_FORMAT_IN_PROGRESS 0x04
3240#define ASCQ_LUN_NOT_READY_INITIALIZING_CMD_REQ 0x02
3241
3242 c = cmd_alloc(h);
Robert Elliottbf43caf2015-04-23 09:33:38 -05003243
Stephen M. Cameron98465902014-02-21 16:25:00 -06003244 (void) fill_cmd(c, TEST_UNIT_READY, h, NULL, 0, 0, scsi3addr, TYPE_CMD);
Webb Scales25163bd2015-04-23 09:32:00 -05003245 rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, NO_TIMEOUT);
3246 if (rc) {
3247 cmd_free(h, c);
3248 return 0;
3249 }
Stephen M. Cameron98465902014-02-21 16:25:00 -06003250 sense = c->err_info->SenseInfo;
Stephen Cameron9437ac42015-04-23 09:32:16 -05003251 if (c->err_info->SenseLen > sizeof(c->err_info->SenseInfo))
3252 sense_len = sizeof(c->err_info->SenseInfo);
3253 else
3254 sense_len = c->err_info->SenseLen;
3255 decode_sense_data(sense, sense_len, &sense_key, &asc, &ascq);
Stephen M. Cameron98465902014-02-21 16:25:00 -06003256 cmd_status = c->err_info->CommandStatus;
3257 scsi_status = c->err_info->ScsiStatus;
3258 cmd_free(h, c);
3259 /* Is the volume 'not ready'? */
3260 if (cmd_status != CMD_TARGET_STATUS ||
3261 scsi_status != SAM_STAT_CHECK_CONDITION ||
3262 sense_key != NOT_READY ||
3263 asc != ASC_LUN_NOT_READY) {
3264 return 0;
3265 }
3266
3267 /* Determine the reason for not ready state */
3268 ldstat = hpsa_get_volume_status(h, scsi3addr);
3269
3270 /* Keep volume offline in certain cases: */
3271 switch (ldstat) {
3272 case HPSA_LV_UNDERGOING_ERASE:
Scott Benesh5ca01202015-07-18 11:13:04 -05003273 case HPSA_LV_NOT_AVAILABLE:
Stephen M. Cameron98465902014-02-21 16:25:00 -06003274 case HPSA_LV_UNDERGOING_RPI:
3275 case HPSA_LV_PENDING_RPI:
3276 case HPSA_LV_ENCRYPTED_NO_KEY:
3277 case HPSA_LV_PLAINTEXT_IN_ENCRYPT_ONLY_CONTROLLER:
3278 case HPSA_LV_UNDERGOING_ENCRYPTION:
3279 case HPSA_LV_UNDERGOING_ENCRYPTION_REKEYING:
3280 case HPSA_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER:
3281 return ldstat;
3282 case HPSA_VPD_LV_STATUS_UNSUPPORTED:
3283 /* If VPD status page isn't available,
3284 * use ASC/ASCQ to determine state
3285 */
3286 if ((ascq == ASCQ_LUN_NOT_READY_FORMAT_IN_PROGRESS) ||
3287 (ascq == ASCQ_LUN_NOT_READY_INITIALIZING_CMD_REQ))
3288 return ldstat;
3289 break;
3290 default:
3291 break;
3292 }
3293 return 0;
3294}
3295
Stephen Cameron9b5c48c2015-04-23 09:32:06 -05003296/*
3297 * Find out if a logical device supports aborts by simply trying one.
3298 * Smart Array may claim not to support aborts on logical drives, but
3299 * if a MSA2000 * is connected, the drives on that will be presented
3300 * by the Smart Array as logical drives, and aborts may be sent to
3301 * those devices successfully. So the simplest way to find out is
3302 * to simply try an abort and see how the device responds.
3303 */
3304static int hpsa_device_supports_aborts(struct ctlr_info *h,
3305 unsigned char *scsi3addr)
3306{
3307 struct CommandList *c;
3308 struct ErrorInfo *ei;
3309 int rc = 0;
3310
3311 u64 tag = (u64) -1; /* bogus tag */
3312
3313 /* Assume that physical devices support aborts */
3314 if (!is_logical_dev_addr_mode(scsi3addr))
3315 return 1;
3316
3317 c = cmd_alloc(h);
Robert Elliottbf43caf2015-04-23 09:33:38 -05003318
Stephen Cameron9b5c48c2015-04-23 09:32:06 -05003319 (void) fill_cmd(c, HPSA_ABORT_MSG, h, &tag, 0, 0, scsi3addr, TYPE_MSG);
3320 (void) hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, NO_TIMEOUT);
3321 /* no unmap needed here because no data xfer. */
3322 ei = c->err_info;
3323 switch (ei->CommandStatus) {
3324 case CMD_INVALID:
3325 rc = 0;
3326 break;
3327 case CMD_UNABORTABLE:
3328 case CMD_ABORT_FAILED:
3329 rc = 1;
3330 break;
Stephen Cameron9437ac42015-04-23 09:32:16 -05003331 case CMD_TMF_STATUS:
3332 rc = hpsa_evaluate_tmf_status(h, c);
3333 break;
Stephen Cameron9b5c48c2015-04-23 09:32:06 -05003334 default:
3335 rc = 0;
3336 break;
3337 }
3338 cmd_free(h, c);
3339 return rc;
3340}
3341
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003342static int hpsa_update_device_info(struct ctlr_info *h,
Stephen M. Cameron0b0e1d62011-08-09 08:17:30 -05003343 unsigned char scsi3addr[], struct hpsa_scsi_dev_t *this_device,
3344 unsigned char *is_OBDR_device)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003345{
Stephen M. Cameron0b0e1d62011-08-09 08:17:30 -05003346
3347#define OBDR_SIG_OFFSET 43
3348#define OBDR_TAPE_SIG "$DR-10"
3349#define OBDR_SIG_LEN (sizeof(OBDR_TAPE_SIG) - 1)
3350#define OBDR_TAPE_INQ_SIZE (OBDR_SIG_OFFSET + OBDR_SIG_LEN)
3351
Stephen M. Cameronea6d3bc2010-02-04 08:42:09 -06003352 unsigned char *inq_buff;
Stephen M. Cameron0b0e1d62011-08-09 08:17:30 -05003353 unsigned char *obdr_sig;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003354
Stephen M. Cameronea6d3bc2010-02-04 08:42:09 -06003355 inq_buff = kzalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003356 if (!inq_buff)
3357 goto bail_out;
3358
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003359 /* Do an inquiry to the device to see what it is. */
3360 if (hpsa_scsi_do_inquiry(h, scsi3addr, 0, inq_buff,
3361 (unsigned char) OBDR_TAPE_INQ_SIZE) != 0) {
3362 /* Inquiry failed (msg printed already) */
3363 dev_err(&h->pdev->dev,
3364 "hpsa_update_device_info: inquiry failed\n");
3365 goto bail_out;
3366 }
3367
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003368 this_device->devtype = (inq_buff[0] & 0x1f);
3369 memcpy(this_device->scsi3addr, scsi3addr, 8);
3370 memcpy(this_device->vendor, &inq_buff[8],
3371 sizeof(this_device->vendor));
3372 memcpy(this_device->model, &inq_buff[16],
3373 sizeof(this_device->model));
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003374 memset(this_device->device_id, 0,
3375 sizeof(this_device->device_id));
3376 hpsa_get_device_id(h, scsi3addr, this_device->device_id,
3377 sizeof(this_device->device_id));
3378
3379 if (this_device->devtype == TYPE_DISK &&
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06003380 is_logical_dev_addr_mode(scsi3addr)) {
Stephen M. Cameron67955ba2014-05-29 10:54:25 -05003381 int volume_offline;
3382
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003383 hpsa_get_raid_level(h, scsi3addr, &this_device->raid_level);
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06003384 if (h->fw_support & MISC_FW_RAID_OFFLOAD_BASIC)
3385 hpsa_get_ioaccel_status(h, scsi3addr, this_device);
Stephen M. Cameron67955ba2014-05-29 10:54:25 -05003386 volume_offline = hpsa_volume_offline(h, scsi3addr);
3387 if (volume_offline < 0 || volume_offline > 0xff)
3388 volume_offline = HPSA_VPD_LV_STATUS_UNSUPPORTED;
3389 this_device->volume_offline = volume_offline & 0xff;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06003390 } else {
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003391 this_device->raid_level = RAID_UNKNOWN;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06003392 this_device->offload_config = 0;
3393 this_device->offload_enabled = 0;
Stephen Cameron41ce4c32015-04-23 09:31:47 -05003394 this_device->offload_to_be_enabled = 0;
Joe Handzika3144e02015-04-23 09:32:59 -05003395 this_device->hba_ioaccel_enabled = 0;
Stephen M. Cameron98465902014-02-21 16:25:00 -06003396 this_device->volume_offline = 0;
Don Brace03383732015-01-23 16:43:30 -06003397 this_device->queue_depth = h->nr_cmds;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06003398 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003399
Stephen M. Cameron0b0e1d62011-08-09 08:17:30 -05003400 if (is_OBDR_device) {
3401 /* See if this is a One-Button-Disaster-Recovery device
3402 * by looking for "$DR-10" at offset 43 in inquiry data.
3403 */
3404 obdr_sig = &inq_buff[OBDR_SIG_OFFSET];
3405 *is_OBDR_device = (this_device->devtype == TYPE_ROM &&
3406 strncmp(obdr_sig, OBDR_TAPE_SIG,
3407 OBDR_SIG_LEN) == 0);
3408 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003409 kfree(inq_buff);
3410 return 0;
3411
3412bail_out:
3413 kfree(inq_buff);
3414 return 1;
3415}
3416
Stephen Cameron9b5c48c2015-04-23 09:32:06 -05003417static void hpsa_update_device_supports_aborts(struct ctlr_info *h,
3418 struct hpsa_scsi_dev_t *dev, u8 *scsi3addr)
3419{
3420 unsigned long flags;
3421 int rc, entry;
3422 /*
3423 * See if this device supports aborts. If we already know
3424 * the device, we already know if it supports aborts, otherwise
3425 * we have to find out if it supports aborts by trying one.
3426 */
3427 spin_lock_irqsave(&h->devlock, flags);
3428 rc = hpsa_scsi_find_entry(dev, h->dev, h->ndevices, &entry);
3429 if ((rc == DEVICE_SAME || rc == DEVICE_UPDATED) &&
3430 entry >= 0 && entry < h->ndevices) {
3431 dev->supports_aborts = h->dev[entry]->supports_aborts;
3432 spin_unlock_irqrestore(&h->devlock, flags);
3433 } else {
3434 spin_unlock_irqrestore(&h->devlock, flags);
3435 dev->supports_aborts =
3436 hpsa_device_supports_aborts(h, scsi3addr);
3437 if (dev->supports_aborts < 0)
3438 dev->supports_aborts = 0;
3439 }
3440}
3441
Scott Teel4f4eb9f2012-01-19 14:01:25 -06003442static unsigned char *ext_target_model[] = {
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003443 "MSA2012",
3444 "MSA2024",
3445 "MSA2312",
3446 "MSA2324",
Stephen M. Cameronfda38512011-05-03 15:00:07 -05003447 "P2000 G3 SAS",
Stephen M. Camerone06c8e52013-09-23 13:33:56 -05003448 "MSA 2040 SAS",
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003449 NULL,
3450};
3451
Scott Teel4f4eb9f2012-01-19 14:01:25 -06003452static int is_ext_target(struct ctlr_info *h, struct hpsa_scsi_dev_t *device)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003453{
3454 int i;
3455
Scott Teel4f4eb9f2012-01-19 14:01:25 -06003456 for (i = 0; ext_target_model[i]; i++)
3457 if (strncmp(device->model, ext_target_model[i],
3458 strlen(ext_target_model[i])) == 0)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003459 return 1;
3460 return 0;
3461}
3462
3463/* Helper function to assign bus, target, lun mapping of devices.
Scott Teel4f4eb9f2012-01-19 14:01:25 -06003464 * Puts non-external target logical volumes on bus 0, external target logical
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003465 * volumes on bus 1, physical devices on bus 2. and the hba on bus 3.
3466 * Logical drive target and lun are assigned at this time, but
3467 * physical device lun and target assignment are deferred (assigned
3468 * in hpsa_find_target_lun, called by hpsa_scsi_add_entry.)
3469 */
3470static void figure_bus_target_lun(struct ctlr_info *h,
Stephen M. Cameron1f310bd2012-01-19 14:01:14 -06003471 u8 *lunaddrbytes, struct hpsa_scsi_dev_t *device)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003472{
Stephen M. Cameron1f310bd2012-01-19 14:01:14 -06003473 u32 lunid = le32_to_cpu(*((__le32 *) lunaddrbytes));
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003474
Stephen M. Cameron1f310bd2012-01-19 14:01:14 -06003475 if (!is_logical_dev_addr_mode(lunaddrbytes)) {
3476 /* physical device, target and lun filled in later */
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003477 if (is_hba_lunid(lunaddrbytes))
Stephen M. Cameron1f310bd2012-01-19 14:01:14 -06003478 hpsa_set_bus_target_lun(device, 3, 0, lunid & 0x3fff);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003479 else
Stephen M. Cameron1f310bd2012-01-19 14:01:14 -06003480 /* defer target, lun assignment for physical devices */
3481 hpsa_set_bus_target_lun(device, 2, -1, -1);
3482 return;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003483 }
Stephen M. Cameron1f310bd2012-01-19 14:01:14 -06003484 /* It's a logical device */
Scott Teel4f4eb9f2012-01-19 14:01:25 -06003485 if (is_ext_target(h, device)) {
3486 /* external target way, put logicals on bus 1
Stephen M. Cameron1f310bd2012-01-19 14:01:14 -06003487 * and match target/lun numbers box
3488 * reports, other smart array, bus 0, target 0, match lunid
3489 */
3490 hpsa_set_bus_target_lun(device,
3491 1, (lunid >> 16) & 0x3fff, lunid & 0x00ff);
3492 return;
3493 }
3494 hpsa_set_bus_target_lun(device, 0, 0, lunid & 0x3fff);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003495}
3496
3497/*
3498 * If there is no lun 0 on a target, linux won't find any devices.
Scott Teel4f4eb9f2012-01-19 14:01:25 -06003499 * For the external targets (arrays), we have to manually detect the enclosure
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003500 * which is at lun zero, as CCISS_REPORT_PHYSICAL_LUNS doesn't report
3501 * it for some reason. *tmpdevice is the target we're adding,
3502 * this_device is a pointer into the current element of currentsd[]
3503 * that we're building up in update_scsi_devices(), below.
3504 * lunzerobits is a bitmap that tracks which targets already have a
3505 * lun 0 assigned.
3506 * Returns 1 if an enclosure was added, 0 if not.
3507 */
Scott Teel4f4eb9f2012-01-19 14:01:25 -06003508static int add_ext_target_dev(struct ctlr_info *h,
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003509 struct hpsa_scsi_dev_t *tmpdevice,
Stephen M. Cameron01a02ff2010-02-04 08:41:33 -06003510 struct hpsa_scsi_dev_t *this_device, u8 *lunaddrbytes,
Scott Teel4f4eb9f2012-01-19 14:01:25 -06003511 unsigned long lunzerobits[], int *n_ext_target_devs)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003512{
3513 unsigned char scsi3addr[8];
3514
Stephen M. Cameron1f310bd2012-01-19 14:01:14 -06003515 if (test_bit(tmpdevice->target, lunzerobits))
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003516 return 0; /* There is already a lun 0 on this target. */
3517
3518 if (!is_logical_dev_addr_mode(lunaddrbytes))
3519 return 0; /* It's the logical targets that may lack lun 0. */
3520
Scott Teel4f4eb9f2012-01-19 14:01:25 -06003521 if (!is_ext_target(h, tmpdevice))
3522 return 0; /* Only external target devices have this problem. */
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003523
Stephen M. Cameron1f310bd2012-01-19 14:01:14 -06003524 if (tmpdevice->lun == 0) /* if lun is 0, then we have a lun 0. */
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003525 return 0;
3526
Stephen M. Cameronc4f8a292011-01-07 10:55:43 -06003527 memset(scsi3addr, 0, 8);
Stephen M. Cameron1f310bd2012-01-19 14:01:14 -06003528 scsi3addr[3] = tmpdevice->target;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003529 if (is_hba_lunid(scsi3addr))
3530 return 0; /* Don't add the RAID controller here. */
3531
Stephen M. Cameron339b2b12010-02-04 08:42:50 -06003532 if (is_scsi_rev_5(h))
3533 return 0; /* p1210m doesn't need to do this. */
3534
Scott Teel4f4eb9f2012-01-19 14:01:25 -06003535 if (*n_ext_target_devs >= MAX_EXT_TARGETS) {
Scott Teelaca4a522012-01-19 14:01:19 -06003536 dev_warn(&h->pdev->dev, "Maximum number of external "
3537 "target devices exceeded. Check your hardware "
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003538 "configuration.");
3539 return 0;
3540 }
3541
Stephen M. Cameron0b0e1d62011-08-09 08:17:30 -05003542 if (hpsa_update_device_info(h, scsi3addr, this_device, NULL))
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003543 return 0;
Scott Teel4f4eb9f2012-01-19 14:01:25 -06003544 (*n_ext_target_devs)++;
Stephen M. Cameron1f310bd2012-01-19 14:01:14 -06003545 hpsa_set_bus_target_lun(this_device,
3546 tmpdevice->bus, tmpdevice->target, 0);
Stephen Cameron9b5c48c2015-04-23 09:32:06 -05003547 hpsa_update_device_supports_aborts(h, this_device, scsi3addr);
Stephen M. Cameron1f310bd2012-01-19 14:01:14 -06003548 set_bit(tmpdevice->target, lunzerobits);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003549 return 1;
3550}
3551
3552/*
Scott Teel54b6e9e2014-02-18 13:56:45 -06003553 * Get address of physical disk used for an ioaccel2 mode command:
3554 * 1. Extract ioaccel2 handle from the command.
3555 * 2. Find a matching ioaccel2 handle from list of physical disks.
3556 * 3. Return:
3557 * 1 and set scsi3addr to address of matching physical
3558 * 0 if no matching physical disk was found.
3559 */
3560static int hpsa_get_pdisk_of_ioaccel2(struct ctlr_info *h,
3561 struct CommandList *ioaccel2_cmd_to_abort, unsigned char *scsi3addr)
3562{
Stephen Cameron41ce4c32015-04-23 09:31:47 -05003563 struct io_accel2_cmd *c2 =
3564 &h->ioaccel2_cmd_pool[ioaccel2_cmd_to_abort->cmdindex];
3565 unsigned long flags;
Scott Teel54b6e9e2014-02-18 13:56:45 -06003566 int i;
Scott Teel54b6e9e2014-02-18 13:56:45 -06003567
Stephen Cameron41ce4c32015-04-23 09:31:47 -05003568 spin_lock_irqsave(&h->devlock, flags);
3569 for (i = 0; i < h->ndevices; i++)
3570 if (h->dev[i]->ioaccel_handle == le32_to_cpu(c2->scsi_nexus)) {
3571 memcpy(scsi3addr, h->dev[i]->scsi3addr,
3572 sizeof(h->dev[i]->scsi3addr));
3573 spin_unlock_irqrestore(&h->devlock, flags);
3574 return 1;
3575 }
3576 spin_unlock_irqrestore(&h->devlock, flags);
3577 return 0;
Scott Teel54b6e9e2014-02-18 13:56:45 -06003578}
Stephen Cameron41ce4c32015-04-23 09:31:47 -05003579
Scott Teel54b6e9e2014-02-18 13:56:45 -06003580/*
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003581 * Do CISS_REPORT_PHYS and CISS_REPORT_LOG. Data is returned in physdev,
3582 * logdev. The number of luns in physdev and logdev are returned in
3583 * *nphysicals and *nlogicals, respectively.
3584 * Returns 0 on success, -1 otherwise.
3585 */
3586static int hpsa_gather_lun_info(struct ctlr_info *h,
Don Brace03383732015-01-23 16:43:30 -06003587 struct ReportExtendedLUNdata *physdev, u32 *nphysicals,
Stephen M. Cameron01a02ff2010-02-04 08:41:33 -06003588 struct ReportLUNdata *logdev, u32 *nlogicals)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003589{
Don Brace03383732015-01-23 16:43:30 -06003590 if (hpsa_scsi_do_report_phys_luns(h, physdev, sizeof(*physdev))) {
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003591 dev_err(&h->pdev->dev, "report physical LUNs failed.\n");
3592 return -1;
3593 }
Don Brace03383732015-01-23 16:43:30 -06003594 *nphysicals = be32_to_cpu(*((__be32 *)physdev->LUNListLength)) / 24;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003595 if (*nphysicals > HPSA_MAX_PHYS_LUN) {
Don Brace03383732015-01-23 16:43:30 -06003596 dev_warn(&h->pdev->dev, "maximum physical LUNs (%d) exceeded. %d LUNs ignored.\n",
3597 HPSA_MAX_PHYS_LUN, *nphysicals - HPSA_MAX_PHYS_LUN);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003598 *nphysicals = HPSA_MAX_PHYS_LUN;
3599 }
Don Brace03383732015-01-23 16:43:30 -06003600 if (hpsa_scsi_do_report_log_luns(h, logdev, sizeof(*logdev))) {
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003601 dev_err(&h->pdev->dev, "report logical LUNs failed.\n");
3602 return -1;
3603 }
Stephen M. Cameron6df1e952010-02-04 08:42:19 -06003604 *nlogicals = be32_to_cpu(*((__be32 *) logdev->LUNListLength)) / 8;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003605 /* Reject Logicals in excess of our max capability. */
3606 if (*nlogicals > HPSA_MAX_LUN) {
3607 dev_warn(&h->pdev->dev,
3608 "maximum logical LUNs (%d) exceeded. "
3609 "%d LUNs ignored.\n", HPSA_MAX_LUN,
3610 *nlogicals - HPSA_MAX_LUN);
3611 *nlogicals = HPSA_MAX_LUN;
3612 }
3613 if (*nlogicals + *nphysicals > HPSA_MAX_PHYS_LUN) {
3614 dev_warn(&h->pdev->dev,
3615 "maximum logical + physical LUNs (%d) exceeded. "
3616 "%d LUNs ignored.\n", HPSA_MAX_PHYS_LUN,
3617 *nphysicals + *nlogicals - HPSA_MAX_PHYS_LUN);
3618 *nlogicals = HPSA_MAX_PHYS_LUN - *nphysicals;
3619 }
3620 return 0;
3621}
3622
Don Brace42a91642014-11-14 17:26:27 -06003623static u8 *figure_lunaddrbytes(struct ctlr_info *h, int raid_ctlr_position,
3624 int i, int nphysicals, int nlogicals,
Matt Gatesa93aa1f2014-02-18 13:55:07 -06003625 struct ReportExtendedLUNdata *physdev_list,
Stephen M. Cameron339b2b12010-02-04 08:42:50 -06003626 struct ReportLUNdata *logdev_list)
3627{
3628 /* Helper function, figure out where the LUN ID info is coming from
3629 * given index i, lists of physical and logical devices, where in
3630 * the list the raid controller is supposed to appear (first or last)
3631 */
3632
3633 int logicals_start = nphysicals + (raid_ctlr_position == 0);
3634 int last_device = nphysicals + nlogicals + (raid_ctlr_position == 0);
3635
3636 if (i == raid_ctlr_position)
3637 return RAID_CTLR_LUNID;
3638
3639 if (i < logicals_start)
Stephen M. Camerond5b5d962014-05-29 10:53:34 -05003640 return &physdev_list->LUN[i -
3641 (raid_ctlr_position == 0)].lunid[0];
Stephen M. Cameron339b2b12010-02-04 08:42:50 -06003642
3643 if (i < last_device)
3644 return &logdev_list->LUN[i - nphysicals -
3645 (raid_ctlr_position == 0)][0];
3646 BUG();
3647 return NULL;
3648}
3649
Don Brace03383732015-01-23 16:43:30 -06003650/* get physical drive ioaccel handle and queue depth */
3651static void hpsa_get_ioaccel_drive_info(struct ctlr_info *h,
3652 struct hpsa_scsi_dev_t *dev,
3653 u8 *lunaddrbytes,
3654 struct bmic_identify_physical_device *id_phys)
3655{
3656 int rc;
3657 struct ext_report_lun_entry *rle =
3658 (struct ext_report_lun_entry *) lunaddrbytes;
3659
3660 dev->ioaccel_handle = rle->ioaccel_handle;
Joe Handzika3144e02015-04-23 09:32:59 -05003661 if (PHYS_IOACCEL(lunaddrbytes) && dev->ioaccel_handle)
3662 dev->hba_ioaccel_enabled = 1;
Don Brace03383732015-01-23 16:43:30 -06003663 memset(id_phys, 0, sizeof(*id_phys));
3664 rc = hpsa_bmic_id_physical_device(h, lunaddrbytes,
3665 GET_BMIC_DRIVE_NUMBER(lunaddrbytes), id_phys,
3666 sizeof(*id_phys));
3667 if (!rc)
3668 /* Reserve space for FW operations */
3669#define DRIVE_CMDS_RESERVED_FOR_FW 2
3670#define DRIVE_QUEUE_DEPTH 7
3671 dev->queue_depth =
3672 le16_to_cpu(id_phys->current_queue_depth_limit) -
3673 DRIVE_CMDS_RESERVED_FOR_FW;
3674 else
3675 dev->queue_depth = DRIVE_QUEUE_DEPTH; /* conservative */
3676 atomic_set(&dev->ioaccel_cmds_out, 0);
Webb Scalesd604f532015-04-23 09:35:22 -05003677 atomic_set(&dev->reset_cmds_out, 0);
Don Brace03383732015-01-23 16:43:30 -06003678}
3679
Joe Handzik8270b862015-07-18 11:12:43 -05003680static void hpsa_get_path_info(struct hpsa_scsi_dev_t *this_device,
3681 u8 *lunaddrbytes,
3682 struct bmic_identify_physical_device *id_phys)
3683{
3684 if (PHYS_IOACCEL(lunaddrbytes)
3685 && this_device->ioaccel_handle)
3686 this_device->hba_ioaccel_enabled = 1;
3687
3688 memcpy(&this_device->active_path_index,
3689 &id_phys->active_path_number,
3690 sizeof(this_device->active_path_index));
3691 memcpy(&this_device->path_map,
3692 &id_phys->redundant_path_present_map,
3693 sizeof(this_device->path_map));
3694 memcpy(&this_device->box,
3695 &id_phys->alternate_paths_phys_box_on_port,
3696 sizeof(this_device->box));
3697 memcpy(&this_device->phys_connector,
3698 &id_phys->alternate_paths_phys_connector,
3699 sizeof(this_device->phys_connector));
3700 memcpy(&this_device->bay,
3701 &id_phys->phys_bay_in_box,
3702 sizeof(this_device->bay));
3703}
3704
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003705static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno)
3706{
3707 /* the idea here is we could get notified
3708 * that some devices have changed, so we do a report
3709 * physical luns and report logical luns cmd, and adjust
3710 * our list of devices accordingly.
3711 *
3712 * The scsi3addr's of devices won't change so long as the
3713 * adapter is not reset. That means we can rescan and
3714 * tell which devices we already know about, vs. new
3715 * devices, vs. disappearing devices.
3716 */
Matt Gatesa93aa1f2014-02-18 13:55:07 -06003717 struct ReportExtendedLUNdata *physdev_list = NULL;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003718 struct ReportLUNdata *logdev_list = NULL;
Don Brace03383732015-01-23 16:43:30 -06003719 struct bmic_identify_physical_device *id_phys = NULL;
Stephen M. Cameron01a02ff2010-02-04 08:41:33 -06003720 u32 nphysicals = 0;
3721 u32 nlogicals = 0;
3722 u32 ndev_allocated = 0;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003723 struct hpsa_scsi_dev_t **currentsd, *this_device, *tmpdevice;
3724 int ncurrent = 0;
Scott Teel4f4eb9f2012-01-19 14:01:25 -06003725 int i, n_ext_target_devs, ndevs_to_allocate;
Stephen M. Cameron339b2b12010-02-04 08:42:50 -06003726 int raid_ctlr_position;
Scott Teelaca4a522012-01-19 14:01:19 -06003727 DECLARE_BITMAP(lunzerobits, MAX_EXT_TARGETS);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003728
Scott Teelcfe5bad2011-10-26 16:21:07 -05003729 currentsd = kzalloc(sizeof(*currentsd) * HPSA_MAX_DEVICES, GFP_KERNEL);
Stephen M. Cameron92084712014-11-14 17:26:54 -06003730 physdev_list = kzalloc(sizeof(*physdev_list), GFP_KERNEL);
3731 logdev_list = kzalloc(sizeof(*logdev_list), GFP_KERNEL);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003732 tmpdevice = kzalloc(sizeof(*tmpdevice), GFP_KERNEL);
Don Brace03383732015-01-23 16:43:30 -06003733 id_phys = kzalloc(sizeof(*id_phys), GFP_KERNEL);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003734
Don Brace03383732015-01-23 16:43:30 -06003735 if (!currentsd || !physdev_list || !logdev_list ||
3736 !tmpdevice || !id_phys) {
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003737 dev_err(&h->pdev->dev, "out of memory\n");
3738 goto out;
3739 }
3740 memset(lunzerobits, 0, sizeof(lunzerobits));
3741
Don Brace03383732015-01-23 16:43:30 -06003742 if (hpsa_gather_lun_info(h, physdev_list, &nphysicals,
3743 logdev_list, &nlogicals))
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003744 goto out;
3745
Scott Teelaca4a522012-01-19 14:01:19 -06003746 /* We might see up to the maximum number of logical and physical disks
3747 * plus external target devices, and a device for the local RAID
3748 * controller.
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003749 */
Scott Teelaca4a522012-01-19 14:01:19 -06003750 ndevs_to_allocate = nphysicals + nlogicals + MAX_EXT_TARGETS + 1;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003751
3752 /* Allocate the per device structures */
3753 for (i = 0; i < ndevs_to_allocate; i++) {
Scott Teelb7ec0212011-10-26 16:21:12 -05003754 if (i >= HPSA_MAX_DEVICES) {
3755 dev_warn(&h->pdev->dev, "maximum devices (%d) exceeded."
3756 " %d devices ignored.\n", HPSA_MAX_DEVICES,
3757 ndevs_to_allocate - HPSA_MAX_DEVICES);
3758 break;
3759 }
3760
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003761 currentsd[i] = kzalloc(sizeof(*currentsd[i]), GFP_KERNEL);
3762 if (!currentsd[i]) {
3763 dev_warn(&h->pdev->dev, "out of memory at %s:%d\n",
3764 __FILE__, __LINE__);
3765 goto out;
3766 }
3767 ndev_allocated++;
3768 }
3769
Stephen M. Cameron86452912014-05-29 10:53:49 -05003770 if (is_scsi_rev_5(h))
Stephen M. Cameron339b2b12010-02-04 08:42:50 -06003771 raid_ctlr_position = 0;
3772 else
3773 raid_ctlr_position = nphysicals + nlogicals;
3774
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003775 /* adjust our table of devices */
Scott Teel4f4eb9f2012-01-19 14:01:25 -06003776 n_ext_target_devs = 0;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003777 for (i = 0; i < nphysicals + nlogicals + 1; i++) {
Stephen M. Cameron0b0e1d62011-08-09 08:17:30 -05003778 u8 *lunaddrbytes, is_OBDR = 0;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003779
3780 /* Figure out where the LUN ID info is coming from */
Stephen M. Cameron339b2b12010-02-04 08:42:50 -06003781 lunaddrbytes = figure_lunaddrbytes(h, raid_ctlr_position,
3782 i, nphysicals, nlogicals, physdev_list, logdev_list);
Stephen Cameron41ce4c32015-04-23 09:31:47 -05003783
3784 /* skip masked non-disk devices */
3785 if (MASKED_DEVICE(lunaddrbytes))
3786 if (i < nphysicals + (raid_ctlr_position == 0) &&
3787 NON_DISK_PHYS_DEV(lunaddrbytes))
3788 continue;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003789
3790 /* Get device type, vendor, model, device id */
Stephen M. Cameron0b0e1d62011-08-09 08:17:30 -05003791 if (hpsa_update_device_info(h, lunaddrbytes, tmpdevice,
3792 &is_OBDR))
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003793 continue; /* skip it if we can't talk to it. */
Stephen M. Cameron1f310bd2012-01-19 14:01:14 -06003794 figure_bus_target_lun(h, lunaddrbytes, tmpdevice);
Stephen Cameron9b5c48c2015-04-23 09:32:06 -05003795 hpsa_update_device_supports_aborts(h, tmpdevice, lunaddrbytes);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003796 this_device = currentsd[ncurrent];
3797
3798 /*
Scott Teel4f4eb9f2012-01-19 14:01:25 -06003799 * For external target devices, we have to insert a LUN 0 which
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003800 * doesn't show up in CCISS_REPORT_PHYSICAL data, but there
3801 * is nonetheless an enclosure device there. We have to
3802 * present that otherwise linux won't find anything if
3803 * there is no lun 0.
3804 */
Scott Teel4f4eb9f2012-01-19 14:01:25 -06003805 if (add_ext_target_dev(h, tmpdevice, this_device,
Stephen M. Cameron1f310bd2012-01-19 14:01:14 -06003806 lunaddrbytes, lunzerobits,
Scott Teel4f4eb9f2012-01-19 14:01:25 -06003807 &n_ext_target_devs)) {
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003808 ncurrent++;
3809 this_device = currentsd[ncurrent];
3810 }
3811
3812 *this_device = *tmpdevice;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003813
Stephen Cameron41ce4c32015-04-23 09:31:47 -05003814 /* do not expose masked devices */
3815 if (MASKED_DEVICE(lunaddrbytes) &&
3816 i < nphysicals + (raid_ctlr_position == 0)) {
Stephen Cameron41ce4c32015-04-23 09:31:47 -05003817 this_device->expose_state = HPSA_DO_NOT_EXPOSE;
3818 } else {
3819 this_device->expose_state =
3820 HPSA_SG_ATTACH | HPSA_ULD_ATTACH;
3821 }
3822
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003823 switch (this_device->devtype) {
Stephen M. Cameron0b0e1d62011-08-09 08:17:30 -05003824 case TYPE_ROM:
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003825 /* We don't *really* support actual CD-ROM devices,
3826 * just "One Button Disaster Recovery" tape drive
3827 * which temporarily pretends to be a CD-ROM drive.
3828 * So we check that the device is really an OBDR tape
3829 * device by checking for "$DR-10" in bytes 43-48 of
3830 * the inquiry data.
3831 */
Stephen M. Cameron0b0e1d62011-08-09 08:17:30 -05003832 if (is_OBDR)
3833 ncurrent++;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003834 break;
3835 case TYPE_DISK:
Kevin Barnettb9092b72015-07-18 11:12:59 -05003836 if (i < nphysicals + (raid_ctlr_position == 0)) {
3837 /* The disk is in HBA mode. */
3838 /* Never use RAID mapper in HBA mode. */
Stephen M. Cameron316b2212014-02-21 16:25:15 -06003839 this_device->offload_enabled = 0;
Kevin Barnettb9092b72015-07-18 11:12:59 -05003840 hpsa_get_ioaccel_drive_info(h, this_device,
3841 lunaddrbytes, id_phys);
3842 hpsa_get_path_info(this_device, lunaddrbytes,
3843 id_phys);
3844 }
Joe Handzikecf418d12015-04-23 09:33:04 -05003845 ncurrent++;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003846 break;
3847 case TYPE_TAPE:
3848 case TYPE_MEDIUM_CHANGER:
Stephen Cameron41ce4c32015-04-23 09:31:47 -05003849 case TYPE_ENCLOSURE:
Kevin Barnettb9092b72015-07-18 11:12:59 -05003850 ncurrent++;
Stephen Cameron41ce4c32015-04-23 09:31:47 -05003851 break;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003852 case TYPE_RAID:
3853 /* Only present the Smartarray HBA as a RAID controller.
3854 * If it's a RAID controller other than the HBA itself
3855 * (an external RAID controller, MSA500 or similar)
3856 * don't present it.
3857 */
3858 if (!is_hba_lunid(lunaddrbytes))
3859 break;
3860 ncurrent++;
3861 break;
3862 default:
3863 break;
3864 }
Scott Teelcfe5bad2011-10-26 16:21:07 -05003865 if (ncurrent >= HPSA_MAX_DEVICES)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003866 break;
3867 }
3868 adjust_hpsa_scsi_table(h, hostno, currentsd, ncurrent);
3869out:
3870 kfree(tmpdevice);
3871 for (i = 0; i < ndev_allocated; i++)
3872 kfree(currentsd[i]);
3873 kfree(currentsd);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003874 kfree(physdev_list);
3875 kfree(logdev_list);
Don Brace03383732015-01-23 16:43:30 -06003876 kfree(id_phys);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003877}
3878
Webb Scalesec5cbf02015-01-23 16:44:45 -06003879static void hpsa_set_sg_descriptor(struct SGDescriptor *desc,
3880 struct scatterlist *sg)
3881{
3882 u64 addr64 = (u64) sg_dma_address(sg);
3883 unsigned int len = sg_dma_len(sg);
3884
3885 desc->Addr = cpu_to_le64(addr64);
3886 desc->Len = cpu_to_le32(len);
3887 desc->Ext = 0;
3888}
3889
Webb Scalesc7ee65b2015-01-23 16:42:17 -06003890/*
3891 * hpsa_scatter_gather takes a struct scsi_cmnd, (cmd), and does the pci
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003892 * dma mapping and fills in the scatter gather entries of the
3893 * hpsa command, cp.
3894 */
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06003895static int hpsa_scatter_gather(struct ctlr_info *h,
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003896 struct CommandList *cp,
3897 struct scsi_cmnd *cmd)
3898{
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003899 struct scatterlist *sg;
Webb Scalesb3a7ba72015-04-23 09:34:27 -05003900 int use_sg, i, sg_limit, chained, last_sg;
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06003901 struct SGDescriptor *curr_sg;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003902
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06003903 BUG_ON(scsi_sg_count(cmd) > h->maxsgentries);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003904
3905 use_sg = scsi_dma_map(cmd);
3906 if (use_sg < 0)
3907 return use_sg;
3908
3909 if (!use_sg)
3910 goto sglist_finished;
3911
Webb Scalesb3a7ba72015-04-23 09:34:27 -05003912 /*
3913 * If the number of entries is greater than the max for a single list,
3914 * then we have a chained list; we will set up all but one entry in the
3915 * first list (the last entry is saved for link information);
3916 * otherwise, we don't have a chained list and we'll set up at each of
3917 * the entries in the one list.
3918 */
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06003919 curr_sg = cp->SG;
Webb Scalesb3a7ba72015-04-23 09:34:27 -05003920 chained = use_sg > h->max_cmd_sg_entries;
3921 sg_limit = chained ? h->max_cmd_sg_entries - 1 : use_sg;
3922 last_sg = scsi_sg_count(cmd) - 1;
3923 scsi_for_each_sg(cmd, sg, sg_limit, i) {
Webb Scalesec5cbf02015-01-23 16:44:45 -06003924 hpsa_set_sg_descriptor(curr_sg, sg);
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06003925 curr_sg++;
3926 }
Webb Scalesec5cbf02015-01-23 16:44:45 -06003927
Webb Scalesb3a7ba72015-04-23 09:34:27 -05003928 if (chained) {
3929 /*
3930 * Continue with the chained list. Set curr_sg to the chained
3931 * list. Modify the limit to the total count less the entries
3932 * we've already set up. Resume the scan at the list entry
3933 * where the previous loop left off.
3934 */
3935 curr_sg = h->cmd_sg_list[cp->cmdindex];
3936 sg_limit = use_sg - sg_limit;
3937 for_each_sg(sg, sg, sg_limit, i) {
3938 hpsa_set_sg_descriptor(curr_sg, sg);
3939 curr_sg++;
3940 }
3941 }
3942
Webb Scalesec5cbf02015-01-23 16:44:45 -06003943 /* Back the pointer up to the last entry and mark it as "last". */
Webb Scalesb3a7ba72015-04-23 09:34:27 -05003944 (curr_sg - 1)->Ext = cpu_to_le32(HPSA_SG_LAST);
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06003945
3946 if (use_sg + chained > h->maxSG)
3947 h->maxSG = use_sg + chained;
3948
3949 if (chained) {
3950 cp->Header.SGList = h->max_cmd_sg_entries;
Stephen M. Cameron50a0dec2014-11-14 17:26:59 -06003951 cp->Header.SGTotal = cpu_to_le16(use_sg + 1);
Stephen M. Camerone2bea6d2013-02-20 11:24:46 -06003952 if (hpsa_map_sg_chain_block(h, cp)) {
3953 scsi_dma_unmap(cmd);
3954 return -1;
3955 }
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06003956 return 0;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003957 }
3958
3959sglist_finished:
3960
Stephen M. Cameron01a02ff2010-02-04 08:41:33 -06003961 cp->Header.SGList = (u8) use_sg; /* no. SGs contig in this cmd */
Webb Scalesc7ee65b2015-01-23 16:42:17 -06003962 cp->Header.SGTotal = cpu_to_le16(use_sg); /* total sgs in cmd list */
Stephen M. Cameronedd16362009-12-08 14:09:11 -08003963 return 0;
3964}
3965
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06003966#define IO_ACCEL_INELIGIBLE (1)
3967static int fixup_ioaccel_cdb(u8 *cdb, int *cdb_len)
3968{
3969 int is_write = 0;
3970 u32 block;
3971 u32 block_cnt;
3972
3973 /* Perform some CDB fixups if needed using 10 byte reads/writes only */
3974 switch (cdb[0]) {
3975 case WRITE_6:
3976 case WRITE_12:
3977 is_write = 1;
3978 case READ_6:
3979 case READ_12:
3980 if (*cdb_len == 6) {
3981 block = (((u32) cdb[2]) << 8) | cdb[3];
3982 block_cnt = cdb[4];
3983 } else {
3984 BUG_ON(*cdb_len != 12);
3985 block = (((u32) cdb[2]) << 24) |
3986 (((u32) cdb[3]) << 16) |
3987 (((u32) cdb[4]) << 8) |
3988 cdb[5];
3989 block_cnt =
3990 (((u32) cdb[6]) << 24) |
3991 (((u32) cdb[7]) << 16) |
3992 (((u32) cdb[8]) << 8) |
3993 cdb[9];
3994 }
3995 if (block_cnt > 0xffff)
3996 return IO_ACCEL_INELIGIBLE;
3997
3998 cdb[0] = is_write ? WRITE_10 : READ_10;
3999 cdb[1] = 0;
4000 cdb[2] = (u8) (block >> 24);
4001 cdb[3] = (u8) (block >> 16);
4002 cdb[4] = (u8) (block >> 8);
4003 cdb[5] = (u8) (block);
4004 cdb[6] = 0;
4005 cdb[7] = (u8) (block_cnt >> 8);
4006 cdb[8] = (u8) (block_cnt);
4007 cdb[9] = 0;
4008 *cdb_len = 10;
4009 break;
4010 }
4011 return 0;
4012}
4013
Scott Teelc3497752014-02-18 13:56:34 -06004014static int hpsa_scsi_ioaccel1_queue_command(struct ctlr_info *h,
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06004015 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
Don Brace03383732015-01-23 16:43:30 -06004016 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk)
Matt Gatese1f7de02014-02-18 13:55:17 -06004017{
4018 struct scsi_cmnd *cmd = c->scsi_cmd;
Matt Gatese1f7de02014-02-18 13:55:17 -06004019 struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[c->cmdindex];
4020 unsigned int len;
4021 unsigned int total_len = 0;
4022 struct scatterlist *sg;
4023 u64 addr64;
4024 int use_sg, i;
4025 struct SGDescriptor *curr_sg;
4026 u32 control = IOACCEL1_CONTROL_SIMPLEQUEUE;
4027
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06004028 /* TODO: implement chaining support */
Don Brace03383732015-01-23 16:43:30 -06004029 if (scsi_sg_count(cmd) > h->ioaccel_maxsg) {
4030 atomic_dec(&phys_disk->ioaccel_cmds_out);
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06004031 return IO_ACCEL_INELIGIBLE;
Don Brace03383732015-01-23 16:43:30 -06004032 }
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06004033
Matt Gatese1f7de02014-02-18 13:55:17 -06004034 BUG_ON(cmd->cmd_len > IOACCEL1_IOFLAGS_CDBLEN_MAX);
4035
Don Brace03383732015-01-23 16:43:30 -06004036 if (fixup_ioaccel_cdb(cdb, &cdb_len)) {
4037 atomic_dec(&phys_disk->ioaccel_cmds_out);
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06004038 return IO_ACCEL_INELIGIBLE;
Don Brace03383732015-01-23 16:43:30 -06004039 }
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06004040
Matt Gatese1f7de02014-02-18 13:55:17 -06004041 c->cmd_type = CMD_IOACCEL1;
4042
4043 /* Adjust the DMA address to point to the accelerated command buffer */
4044 c->busaddr = (u32) h->ioaccel_cmd_pool_dhandle +
4045 (c->cmdindex * sizeof(*cp));
4046 BUG_ON(c->busaddr & 0x0000007F);
4047
4048 use_sg = scsi_dma_map(cmd);
Don Brace03383732015-01-23 16:43:30 -06004049 if (use_sg < 0) {
4050 atomic_dec(&phys_disk->ioaccel_cmds_out);
Matt Gatese1f7de02014-02-18 13:55:17 -06004051 return use_sg;
Don Brace03383732015-01-23 16:43:30 -06004052 }
Matt Gatese1f7de02014-02-18 13:55:17 -06004053
4054 if (use_sg) {
4055 curr_sg = cp->SG;
4056 scsi_for_each_sg(cmd, sg, use_sg, i) {
4057 addr64 = (u64) sg_dma_address(sg);
4058 len = sg_dma_len(sg);
4059 total_len += len;
Stephen M. Cameron50a0dec2014-11-14 17:26:59 -06004060 curr_sg->Addr = cpu_to_le64(addr64);
4061 curr_sg->Len = cpu_to_le32(len);
4062 curr_sg->Ext = cpu_to_le32(0);
Matt Gatese1f7de02014-02-18 13:55:17 -06004063 curr_sg++;
4064 }
Stephen M. Cameron50a0dec2014-11-14 17:26:59 -06004065 (--curr_sg)->Ext = cpu_to_le32(HPSA_SG_LAST);
Matt Gatese1f7de02014-02-18 13:55:17 -06004066
4067 switch (cmd->sc_data_direction) {
4068 case DMA_TO_DEVICE:
4069 control |= IOACCEL1_CONTROL_DATA_OUT;
4070 break;
4071 case DMA_FROM_DEVICE:
4072 control |= IOACCEL1_CONTROL_DATA_IN;
4073 break;
4074 case DMA_NONE:
4075 control |= IOACCEL1_CONTROL_NODATAXFER;
4076 break;
4077 default:
4078 dev_err(&h->pdev->dev, "unknown data direction: %d\n",
4079 cmd->sc_data_direction);
4080 BUG();
4081 break;
4082 }
4083 } else {
4084 control |= IOACCEL1_CONTROL_NODATAXFER;
4085 }
4086
Scott Teelc3497752014-02-18 13:56:34 -06004087 c->Header.SGList = use_sg;
Matt Gatese1f7de02014-02-18 13:55:17 -06004088 /* Fill out the command structure to submit */
Don Brace2b08b3e2015-01-23 16:41:09 -06004089 cp->dev_handle = cpu_to_le16(ioaccel_handle & 0xFFFF);
4090 cp->transfer_len = cpu_to_le32(total_len);
4091 cp->io_flags = cpu_to_le16(IOACCEL1_IOFLAGS_IO_REQ |
4092 (cdb_len & IOACCEL1_IOFLAGS_CDBLEN_MASK));
4093 cp->control = cpu_to_le32(control);
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06004094 memcpy(cp->CDB, cdb, cdb_len);
4095 memcpy(cp->CISS_LUN, scsi3addr, 8);
Scott Teelc3497752014-02-18 13:56:34 -06004096 /* Tag was already set at init time. */
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06004097 enqueue_cmd_and_start_io(h, c);
Matt Gatese1f7de02014-02-18 13:55:17 -06004098 return 0;
4099}
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004100
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06004101/*
4102 * Queue a command directly to a device behind the controller using the
4103 * I/O accelerator path.
4104 */
4105static int hpsa_scsi_ioaccel_direct_map(struct ctlr_info *h,
4106 struct CommandList *c)
4107{
4108 struct scsi_cmnd *cmd = c->scsi_cmd;
4109 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
4110
Don Brace03383732015-01-23 16:43:30 -06004111 c->phys_disk = dev;
4112
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06004113 return hpsa_scsi_ioaccel_queue_command(h, c, dev->ioaccel_handle,
Don Brace03383732015-01-23 16:43:30 -06004114 cmd->cmnd, cmd->cmd_len, dev->scsi3addr, dev);
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06004115}
4116
Scott Teeldd0e19f2014-02-18 13:57:31 -06004117/*
4118 * Set encryption parameters for the ioaccel2 request
4119 */
4120static void set_encrypt_ioaccel2(struct ctlr_info *h,
4121 struct CommandList *c, struct io_accel2_cmd *cp)
4122{
4123 struct scsi_cmnd *cmd = c->scsi_cmd;
4124 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
4125 struct raid_map_data *map = &dev->raid_map;
4126 u64 first_block;
4127
Scott Teeldd0e19f2014-02-18 13:57:31 -06004128 /* Are we doing encryption on this device */
Don Brace2b08b3e2015-01-23 16:41:09 -06004129 if (!(le16_to_cpu(map->flags) & RAID_MAP_FLAG_ENCRYPT_ON))
Scott Teeldd0e19f2014-02-18 13:57:31 -06004130 return;
4131 /* Set the data encryption key index. */
4132 cp->dekindex = map->dekindex;
4133
4134 /* Set the encryption enable flag, encoded into direction field. */
4135 cp->direction |= IOACCEL2_DIRECTION_ENCRYPT_MASK;
4136
4137 /* Set encryption tweak values based on logical block address
4138 * If block size is 512, tweak value is LBA.
4139 * For other block sizes, tweak is (LBA * block size)/ 512)
4140 */
4141 switch (cmd->cmnd[0]) {
4142 /* Required? 6-byte cdbs eliminated by fixup_ioaccel_cdb */
4143 case WRITE_6:
4144 case READ_6:
Don Brace2b08b3e2015-01-23 16:41:09 -06004145 first_block = get_unaligned_be16(&cmd->cmnd[2]);
Scott Teeldd0e19f2014-02-18 13:57:31 -06004146 break;
4147 case WRITE_10:
4148 case READ_10:
Scott Teeldd0e19f2014-02-18 13:57:31 -06004149 /* Required? 12-byte cdbs eliminated by fixup_ioaccel_cdb */
4150 case WRITE_12:
4151 case READ_12:
Don Brace2b08b3e2015-01-23 16:41:09 -06004152 first_block = get_unaligned_be32(&cmd->cmnd[2]);
Scott Teeldd0e19f2014-02-18 13:57:31 -06004153 break;
4154 case WRITE_16:
4155 case READ_16:
Don Brace2b08b3e2015-01-23 16:41:09 -06004156 first_block = get_unaligned_be64(&cmd->cmnd[2]);
Scott Teeldd0e19f2014-02-18 13:57:31 -06004157 break;
4158 default:
4159 dev_err(&h->pdev->dev,
Don Brace2b08b3e2015-01-23 16:41:09 -06004160 "ERROR: %s: size (0x%x) not supported for encryption\n",
4161 __func__, cmd->cmnd[0]);
Scott Teeldd0e19f2014-02-18 13:57:31 -06004162 BUG();
4163 break;
4164 }
Don Brace2b08b3e2015-01-23 16:41:09 -06004165
4166 if (le32_to_cpu(map->volume_blk_size) != 512)
4167 first_block = first_block *
4168 le32_to_cpu(map->volume_blk_size)/512;
4169
4170 cp->tweak_lower = cpu_to_le32(first_block);
4171 cp->tweak_upper = cpu_to_le32(first_block >> 32);
Scott Teeldd0e19f2014-02-18 13:57:31 -06004172}
4173
Scott Teelc3497752014-02-18 13:56:34 -06004174static int hpsa_scsi_ioaccel2_queue_command(struct ctlr_info *h,
4175 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
Don Brace03383732015-01-23 16:43:30 -06004176 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk)
Scott Teelc3497752014-02-18 13:56:34 -06004177{
4178 struct scsi_cmnd *cmd = c->scsi_cmd;
4179 struct io_accel2_cmd *cp = &h->ioaccel2_cmd_pool[c->cmdindex];
4180 struct ioaccel2_sg_element *curr_sg;
4181 int use_sg, i;
4182 struct scatterlist *sg;
4183 u64 addr64;
4184 u32 len;
4185 u32 total_len = 0;
4186
Webb Scalesd9a729f2015-04-23 09:33:27 -05004187 BUG_ON(scsi_sg_count(cmd) > h->maxsgentries);
Scott Teelc3497752014-02-18 13:56:34 -06004188
Don Brace03383732015-01-23 16:43:30 -06004189 if (fixup_ioaccel_cdb(cdb, &cdb_len)) {
4190 atomic_dec(&phys_disk->ioaccel_cmds_out);
Scott Teelc3497752014-02-18 13:56:34 -06004191 return IO_ACCEL_INELIGIBLE;
Don Brace03383732015-01-23 16:43:30 -06004192 }
4193
Scott Teelc3497752014-02-18 13:56:34 -06004194 c->cmd_type = CMD_IOACCEL2;
4195 /* Adjust the DMA address to point to the accelerated command buffer */
4196 c->busaddr = (u32) h->ioaccel2_cmd_pool_dhandle +
4197 (c->cmdindex * sizeof(*cp));
4198 BUG_ON(c->busaddr & 0x0000007F);
4199
4200 memset(cp, 0, sizeof(*cp));
4201 cp->IU_type = IOACCEL2_IU_TYPE;
4202
4203 use_sg = scsi_dma_map(cmd);
Don Brace03383732015-01-23 16:43:30 -06004204 if (use_sg < 0) {
4205 atomic_dec(&phys_disk->ioaccel_cmds_out);
Scott Teelc3497752014-02-18 13:56:34 -06004206 return use_sg;
Don Brace03383732015-01-23 16:43:30 -06004207 }
Scott Teelc3497752014-02-18 13:56:34 -06004208
4209 if (use_sg) {
Scott Teelc3497752014-02-18 13:56:34 -06004210 curr_sg = cp->sg;
Webb Scalesd9a729f2015-04-23 09:33:27 -05004211 if (use_sg > h->ioaccel_maxsg) {
4212 addr64 = le64_to_cpu(
4213 h->ioaccel2_cmd_sg_list[c->cmdindex]->address);
4214 curr_sg->address = cpu_to_le64(addr64);
4215 curr_sg->length = 0;
4216 curr_sg->reserved[0] = 0;
4217 curr_sg->reserved[1] = 0;
4218 curr_sg->reserved[2] = 0;
4219 curr_sg->chain_indicator = 0x80;
4220
4221 curr_sg = h->ioaccel2_cmd_sg_list[c->cmdindex];
4222 }
Scott Teelc3497752014-02-18 13:56:34 -06004223 scsi_for_each_sg(cmd, sg, use_sg, i) {
4224 addr64 = (u64) sg_dma_address(sg);
4225 len = sg_dma_len(sg);
4226 total_len += len;
4227 curr_sg->address = cpu_to_le64(addr64);
4228 curr_sg->length = cpu_to_le32(len);
4229 curr_sg->reserved[0] = 0;
4230 curr_sg->reserved[1] = 0;
4231 curr_sg->reserved[2] = 0;
4232 curr_sg->chain_indicator = 0;
4233 curr_sg++;
4234 }
4235
4236 switch (cmd->sc_data_direction) {
4237 case DMA_TO_DEVICE:
Scott Teeldd0e19f2014-02-18 13:57:31 -06004238 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
4239 cp->direction |= IOACCEL2_DIR_DATA_OUT;
Scott Teelc3497752014-02-18 13:56:34 -06004240 break;
4241 case DMA_FROM_DEVICE:
Scott Teeldd0e19f2014-02-18 13:57:31 -06004242 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
4243 cp->direction |= IOACCEL2_DIR_DATA_IN;
Scott Teelc3497752014-02-18 13:56:34 -06004244 break;
4245 case DMA_NONE:
Scott Teeldd0e19f2014-02-18 13:57:31 -06004246 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
4247 cp->direction |= IOACCEL2_DIR_NO_DATA;
Scott Teelc3497752014-02-18 13:56:34 -06004248 break;
4249 default:
4250 dev_err(&h->pdev->dev, "unknown data direction: %d\n",
4251 cmd->sc_data_direction);
4252 BUG();
4253 break;
4254 }
4255 } else {
Scott Teeldd0e19f2014-02-18 13:57:31 -06004256 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
4257 cp->direction |= IOACCEL2_DIR_NO_DATA;
Scott Teelc3497752014-02-18 13:56:34 -06004258 }
Scott Teeldd0e19f2014-02-18 13:57:31 -06004259
4260 /* Set encryption parameters, if necessary */
4261 set_encrypt_ioaccel2(h, c, cp);
4262
Don Brace2b08b3e2015-01-23 16:41:09 -06004263 cp->scsi_nexus = cpu_to_le32(ioaccel_handle);
Don Bracef2405db2015-01-23 16:43:09 -06004264 cp->Tag = cpu_to_le32(c->cmdindex << DIRECT_LOOKUP_SHIFT);
Scott Teelc3497752014-02-18 13:56:34 -06004265 memcpy(cp->cdb, cdb, sizeof(cp->cdb));
Scott Teelc3497752014-02-18 13:56:34 -06004266
Scott Teelc3497752014-02-18 13:56:34 -06004267 cp->data_len = cpu_to_le32(total_len);
4268 cp->err_ptr = cpu_to_le64(c->busaddr +
4269 offsetof(struct io_accel2_cmd, error_data));
Stephen M. Cameron50a0dec2014-11-14 17:26:59 -06004270 cp->err_len = cpu_to_le32(sizeof(cp->error_data));
Scott Teelc3497752014-02-18 13:56:34 -06004271
Webb Scalesd9a729f2015-04-23 09:33:27 -05004272 /* fill in sg elements */
4273 if (use_sg > h->ioaccel_maxsg) {
4274 cp->sg_count = 1;
4275 if (hpsa_map_ioaccel2_sg_chain_block(h, cp, c)) {
4276 atomic_dec(&phys_disk->ioaccel_cmds_out);
4277 scsi_dma_unmap(cmd);
4278 return -1;
4279 }
4280 } else
4281 cp->sg_count = (u8) use_sg;
4282
Scott Teelc3497752014-02-18 13:56:34 -06004283 enqueue_cmd_and_start_io(h, c);
4284 return 0;
4285}
4286
4287/*
4288 * Queue a command to the correct I/O accelerator path.
4289 */
4290static int hpsa_scsi_ioaccel_queue_command(struct ctlr_info *h,
4291 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
Don Brace03383732015-01-23 16:43:30 -06004292 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk)
Scott Teelc3497752014-02-18 13:56:34 -06004293{
Don Brace03383732015-01-23 16:43:30 -06004294 /* Try to honor the device's queue depth */
4295 if (atomic_inc_return(&phys_disk->ioaccel_cmds_out) >
4296 phys_disk->queue_depth) {
4297 atomic_dec(&phys_disk->ioaccel_cmds_out);
4298 return IO_ACCEL_INELIGIBLE;
4299 }
Scott Teelc3497752014-02-18 13:56:34 -06004300 if (h->transMethod & CFGTBL_Trans_io_accel1)
4301 return hpsa_scsi_ioaccel1_queue_command(h, c, ioaccel_handle,
Don Brace03383732015-01-23 16:43:30 -06004302 cdb, cdb_len, scsi3addr,
4303 phys_disk);
Scott Teelc3497752014-02-18 13:56:34 -06004304 else
4305 return hpsa_scsi_ioaccel2_queue_command(h, c, ioaccel_handle,
Don Brace03383732015-01-23 16:43:30 -06004306 cdb, cdb_len, scsi3addr,
4307 phys_disk);
Scott Teelc3497752014-02-18 13:56:34 -06004308}
4309
Scott Teel6b80b182014-02-18 13:56:55 -06004310static void raid_map_helper(struct raid_map_data *map,
4311 int offload_to_mirror, u32 *map_index, u32 *current_group)
4312{
4313 if (offload_to_mirror == 0) {
4314 /* use physical disk in the first mirrored group. */
Don Brace2b08b3e2015-01-23 16:41:09 -06004315 *map_index %= le16_to_cpu(map->data_disks_per_row);
Scott Teel6b80b182014-02-18 13:56:55 -06004316 return;
4317 }
4318 do {
4319 /* determine mirror group that *map_index indicates */
Don Brace2b08b3e2015-01-23 16:41:09 -06004320 *current_group = *map_index /
4321 le16_to_cpu(map->data_disks_per_row);
Scott Teel6b80b182014-02-18 13:56:55 -06004322 if (offload_to_mirror == *current_group)
4323 continue;
Don Brace2b08b3e2015-01-23 16:41:09 -06004324 if (*current_group < le16_to_cpu(map->layout_map_count) - 1) {
Scott Teel6b80b182014-02-18 13:56:55 -06004325 /* select map index from next group */
Don Brace2b08b3e2015-01-23 16:41:09 -06004326 *map_index += le16_to_cpu(map->data_disks_per_row);
Scott Teel6b80b182014-02-18 13:56:55 -06004327 (*current_group)++;
4328 } else {
4329 /* select map index from first group */
Don Brace2b08b3e2015-01-23 16:41:09 -06004330 *map_index %= le16_to_cpu(map->data_disks_per_row);
Scott Teel6b80b182014-02-18 13:56:55 -06004331 *current_group = 0;
4332 }
4333 } while (offload_to_mirror != *current_group);
4334}
4335
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06004336/*
4337 * Attempt to perform offload RAID mapping for a logical volume I/O.
4338 */
4339static int hpsa_scsi_ioaccel_raid_map(struct ctlr_info *h,
4340 struct CommandList *c)
4341{
4342 struct scsi_cmnd *cmd = c->scsi_cmd;
4343 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
4344 struct raid_map_data *map = &dev->raid_map;
4345 struct raid_map_disk_data *dd = &map->data[0];
4346 int is_write = 0;
4347 u32 map_index;
4348 u64 first_block, last_block;
4349 u32 block_cnt;
4350 u32 blocks_per_row;
4351 u64 first_row, last_row;
4352 u32 first_row_offset, last_row_offset;
4353 u32 first_column, last_column;
Scott Teel6b80b182014-02-18 13:56:55 -06004354 u64 r0_first_row, r0_last_row;
4355 u32 r5or6_blocks_per_row;
4356 u64 r5or6_first_row, r5or6_last_row;
4357 u32 r5or6_first_row_offset, r5or6_last_row_offset;
4358 u32 r5or6_first_column, r5or6_last_column;
4359 u32 total_disks_per_row;
4360 u32 stripesize;
4361 u32 first_group, last_group, current_group;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06004362 u32 map_row;
4363 u32 disk_handle;
4364 u64 disk_block;
4365 u32 disk_block_cnt;
4366 u8 cdb[16];
4367 u8 cdb_len;
Don Brace2b08b3e2015-01-23 16:41:09 -06004368 u16 strip_size;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06004369#if BITS_PER_LONG == 32
4370 u64 tmpdiv;
4371#endif
Scott Teel6b80b182014-02-18 13:56:55 -06004372 int offload_to_mirror;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06004373
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06004374 /* check for valid opcode, get LBA and block count */
4375 switch (cmd->cmnd[0]) {
4376 case WRITE_6:
4377 is_write = 1;
4378 case READ_6:
4379 first_block =
4380 (((u64) cmd->cmnd[2]) << 8) |
4381 cmd->cmnd[3];
4382 block_cnt = cmd->cmnd[4];
Stephen M. Cameron3fa89a02014-07-03 10:18:14 -05004383 if (block_cnt == 0)
4384 block_cnt = 256;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06004385 break;
4386 case WRITE_10:
4387 is_write = 1;
4388 case READ_10:
4389 first_block =
4390 (((u64) cmd->cmnd[2]) << 24) |
4391 (((u64) cmd->cmnd[3]) << 16) |
4392 (((u64) cmd->cmnd[4]) << 8) |
4393 cmd->cmnd[5];
4394 block_cnt =
4395 (((u32) cmd->cmnd[7]) << 8) |
4396 cmd->cmnd[8];
4397 break;
4398 case WRITE_12:
4399 is_write = 1;
4400 case READ_12:
4401 first_block =
4402 (((u64) cmd->cmnd[2]) << 24) |
4403 (((u64) cmd->cmnd[3]) << 16) |
4404 (((u64) cmd->cmnd[4]) << 8) |
4405 cmd->cmnd[5];
4406 block_cnt =
4407 (((u32) cmd->cmnd[6]) << 24) |
4408 (((u32) cmd->cmnd[7]) << 16) |
4409 (((u32) cmd->cmnd[8]) << 8) |
4410 cmd->cmnd[9];
4411 break;
4412 case WRITE_16:
4413 is_write = 1;
4414 case READ_16:
4415 first_block =
4416 (((u64) cmd->cmnd[2]) << 56) |
4417 (((u64) cmd->cmnd[3]) << 48) |
4418 (((u64) cmd->cmnd[4]) << 40) |
4419 (((u64) cmd->cmnd[5]) << 32) |
4420 (((u64) cmd->cmnd[6]) << 24) |
4421 (((u64) cmd->cmnd[7]) << 16) |
4422 (((u64) cmd->cmnd[8]) << 8) |
4423 cmd->cmnd[9];
4424 block_cnt =
4425 (((u32) cmd->cmnd[10]) << 24) |
4426 (((u32) cmd->cmnd[11]) << 16) |
4427 (((u32) cmd->cmnd[12]) << 8) |
4428 cmd->cmnd[13];
4429 break;
4430 default:
4431 return IO_ACCEL_INELIGIBLE; /* process via normal I/O path */
4432 }
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06004433 last_block = first_block + block_cnt - 1;
4434
4435 /* check for write to non-RAID-0 */
4436 if (is_write && dev->raid_level != 0)
4437 return IO_ACCEL_INELIGIBLE;
4438
4439 /* check for invalid block or wraparound */
Don Brace2b08b3e2015-01-23 16:41:09 -06004440 if (last_block >= le64_to_cpu(map->volume_blk_cnt) ||
4441 last_block < first_block)
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06004442 return IO_ACCEL_INELIGIBLE;
4443
4444 /* calculate stripe information for the request */
Don Brace2b08b3e2015-01-23 16:41:09 -06004445 blocks_per_row = le16_to_cpu(map->data_disks_per_row) *
4446 le16_to_cpu(map->strip_size);
4447 strip_size = le16_to_cpu(map->strip_size);
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06004448#if BITS_PER_LONG == 32
4449 tmpdiv = first_block;
4450 (void) do_div(tmpdiv, blocks_per_row);
4451 first_row = tmpdiv;
4452 tmpdiv = last_block;
4453 (void) do_div(tmpdiv, blocks_per_row);
4454 last_row = tmpdiv;
4455 first_row_offset = (u32) (first_block - (first_row * blocks_per_row));
4456 last_row_offset = (u32) (last_block - (last_row * blocks_per_row));
4457 tmpdiv = first_row_offset;
Don Brace2b08b3e2015-01-23 16:41:09 -06004458 (void) do_div(tmpdiv, strip_size);
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06004459 first_column = tmpdiv;
4460 tmpdiv = last_row_offset;
Don Brace2b08b3e2015-01-23 16:41:09 -06004461 (void) do_div(tmpdiv, strip_size);
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06004462 last_column = tmpdiv;
4463#else
4464 first_row = first_block / blocks_per_row;
4465 last_row = last_block / blocks_per_row;
4466 first_row_offset = (u32) (first_block - (first_row * blocks_per_row));
4467 last_row_offset = (u32) (last_block - (last_row * blocks_per_row));
Don Brace2b08b3e2015-01-23 16:41:09 -06004468 first_column = first_row_offset / strip_size;
4469 last_column = last_row_offset / strip_size;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06004470#endif
4471
4472 /* if this isn't a single row/column then give to the controller */
4473 if ((first_row != last_row) || (first_column != last_column))
4474 return IO_ACCEL_INELIGIBLE;
4475
4476 /* proceeding with driver mapping */
Don Brace2b08b3e2015-01-23 16:41:09 -06004477 total_disks_per_row = le16_to_cpu(map->data_disks_per_row) +
4478 le16_to_cpu(map->metadata_disks_per_row);
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06004479 map_row = ((u32)(first_row >> map->parity_rotation_shift)) %
Don Brace2b08b3e2015-01-23 16:41:09 -06004480 le16_to_cpu(map->row_cnt);
Scott Teel6b80b182014-02-18 13:56:55 -06004481 map_index = (map_row * total_disks_per_row) + first_column;
4482
4483 switch (dev->raid_level) {
4484 case HPSA_RAID_0:
4485 break; /* nothing special to do */
4486 case HPSA_RAID_1:
4487 /* Handles load balance across RAID 1 members.
4488 * (2-drive R1 and R10 with even # of drives.)
4489 * Appropriate for SSDs, not optimal for HDDs
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06004490 */
Don Brace2b08b3e2015-01-23 16:41:09 -06004491 BUG_ON(le16_to_cpu(map->layout_map_count) != 2);
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06004492 if (dev->offload_to_mirror)
Don Brace2b08b3e2015-01-23 16:41:09 -06004493 map_index += le16_to_cpu(map->data_disks_per_row);
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06004494 dev->offload_to_mirror = !dev->offload_to_mirror;
Scott Teel6b80b182014-02-18 13:56:55 -06004495 break;
4496 case HPSA_RAID_ADM:
4497 /* Handles N-way mirrors (R1-ADM)
4498 * and R10 with # of drives divisible by 3.)
4499 */
Don Brace2b08b3e2015-01-23 16:41:09 -06004500 BUG_ON(le16_to_cpu(map->layout_map_count) != 3);
Scott Teel6b80b182014-02-18 13:56:55 -06004501
4502 offload_to_mirror = dev->offload_to_mirror;
4503 raid_map_helper(map, offload_to_mirror,
4504 &map_index, &current_group);
4505 /* set mirror group to use next time */
4506 offload_to_mirror =
Don Brace2b08b3e2015-01-23 16:41:09 -06004507 (offload_to_mirror >=
4508 le16_to_cpu(map->layout_map_count) - 1)
Scott Teel6b80b182014-02-18 13:56:55 -06004509 ? 0 : offload_to_mirror + 1;
Scott Teel6b80b182014-02-18 13:56:55 -06004510 dev->offload_to_mirror = offload_to_mirror;
4511 /* Avoid direct use of dev->offload_to_mirror within this
4512 * function since multiple threads might simultaneously
4513 * increment it beyond the range of dev->layout_map_count -1.
4514 */
4515 break;
4516 case HPSA_RAID_5:
4517 case HPSA_RAID_6:
Don Brace2b08b3e2015-01-23 16:41:09 -06004518 if (le16_to_cpu(map->layout_map_count) <= 1)
Scott Teel6b80b182014-02-18 13:56:55 -06004519 break;
4520
4521 /* Verify first and last block are in same RAID group */
4522 r5or6_blocks_per_row =
Don Brace2b08b3e2015-01-23 16:41:09 -06004523 le16_to_cpu(map->strip_size) *
4524 le16_to_cpu(map->data_disks_per_row);
Scott Teel6b80b182014-02-18 13:56:55 -06004525 BUG_ON(r5or6_blocks_per_row == 0);
Don Brace2b08b3e2015-01-23 16:41:09 -06004526 stripesize = r5or6_blocks_per_row *
4527 le16_to_cpu(map->layout_map_count);
Scott Teel6b80b182014-02-18 13:56:55 -06004528#if BITS_PER_LONG == 32
4529 tmpdiv = first_block;
4530 first_group = do_div(tmpdiv, stripesize);
4531 tmpdiv = first_group;
4532 (void) do_div(tmpdiv, r5or6_blocks_per_row);
4533 first_group = tmpdiv;
4534 tmpdiv = last_block;
4535 last_group = do_div(tmpdiv, stripesize);
4536 tmpdiv = last_group;
4537 (void) do_div(tmpdiv, r5or6_blocks_per_row);
4538 last_group = tmpdiv;
4539#else
4540 first_group = (first_block % stripesize) / r5or6_blocks_per_row;
4541 last_group = (last_block % stripesize) / r5or6_blocks_per_row;
Scott Teel6b80b182014-02-18 13:56:55 -06004542#endif
Stephen M. Cameron000ff7c2014-03-13 17:12:50 -05004543 if (first_group != last_group)
Scott Teel6b80b182014-02-18 13:56:55 -06004544 return IO_ACCEL_INELIGIBLE;
4545
4546 /* Verify request is in a single row of RAID 5/6 */
4547#if BITS_PER_LONG == 32
4548 tmpdiv = first_block;
4549 (void) do_div(tmpdiv, stripesize);
4550 first_row = r5or6_first_row = r0_first_row = tmpdiv;
4551 tmpdiv = last_block;
4552 (void) do_div(tmpdiv, stripesize);
4553 r5or6_last_row = r0_last_row = tmpdiv;
4554#else
4555 first_row = r5or6_first_row = r0_first_row =
4556 first_block / stripesize;
4557 r5or6_last_row = r0_last_row = last_block / stripesize;
4558#endif
4559 if (r5or6_first_row != r5or6_last_row)
4560 return IO_ACCEL_INELIGIBLE;
4561
4562
4563 /* Verify request is in a single column */
4564#if BITS_PER_LONG == 32
4565 tmpdiv = first_block;
4566 first_row_offset = do_div(tmpdiv, stripesize);
4567 tmpdiv = first_row_offset;
4568 first_row_offset = (u32) do_div(tmpdiv, r5or6_blocks_per_row);
4569 r5or6_first_row_offset = first_row_offset;
4570 tmpdiv = last_block;
4571 r5or6_last_row_offset = do_div(tmpdiv, stripesize);
4572 tmpdiv = r5or6_last_row_offset;
4573 r5or6_last_row_offset = do_div(tmpdiv, r5or6_blocks_per_row);
4574 tmpdiv = r5or6_first_row_offset;
4575 (void) do_div(tmpdiv, map->strip_size);
4576 first_column = r5or6_first_column = tmpdiv;
4577 tmpdiv = r5or6_last_row_offset;
4578 (void) do_div(tmpdiv, map->strip_size);
4579 r5or6_last_column = tmpdiv;
4580#else
4581 first_row_offset = r5or6_first_row_offset =
4582 (u32)((first_block % stripesize) %
4583 r5or6_blocks_per_row);
4584
4585 r5or6_last_row_offset =
4586 (u32)((last_block % stripesize) %
4587 r5or6_blocks_per_row);
4588
4589 first_column = r5or6_first_column =
Don Brace2b08b3e2015-01-23 16:41:09 -06004590 r5or6_first_row_offset / le16_to_cpu(map->strip_size);
Scott Teel6b80b182014-02-18 13:56:55 -06004591 r5or6_last_column =
Don Brace2b08b3e2015-01-23 16:41:09 -06004592 r5or6_last_row_offset / le16_to_cpu(map->strip_size);
Scott Teel6b80b182014-02-18 13:56:55 -06004593#endif
4594 if (r5or6_first_column != r5or6_last_column)
4595 return IO_ACCEL_INELIGIBLE;
4596
4597 /* Request is eligible */
4598 map_row = ((u32)(first_row >> map->parity_rotation_shift)) %
Don Brace2b08b3e2015-01-23 16:41:09 -06004599 le16_to_cpu(map->row_cnt);
Scott Teel6b80b182014-02-18 13:56:55 -06004600
4601 map_index = (first_group *
Don Brace2b08b3e2015-01-23 16:41:09 -06004602 (le16_to_cpu(map->row_cnt) * total_disks_per_row)) +
Scott Teel6b80b182014-02-18 13:56:55 -06004603 (map_row * total_disks_per_row) + first_column;
4604 break;
4605 default:
4606 return IO_ACCEL_INELIGIBLE;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06004607 }
Scott Teel6b80b182014-02-18 13:56:55 -06004608
Stephen Cameron07543e02015-01-23 16:44:14 -06004609 if (unlikely(map_index >= RAID_MAP_MAX_ENTRIES))
4610 return IO_ACCEL_INELIGIBLE;
4611
Don Brace03383732015-01-23 16:43:30 -06004612 c->phys_disk = dev->phys_disk[map_index];
4613
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06004614 disk_handle = dd[map_index].ioaccel_handle;
Don Brace2b08b3e2015-01-23 16:41:09 -06004615 disk_block = le64_to_cpu(map->disk_starting_blk) +
4616 first_row * le16_to_cpu(map->strip_size) +
4617 (first_row_offset - first_column *
4618 le16_to_cpu(map->strip_size));
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06004619 disk_block_cnt = block_cnt;
4620
4621 /* handle differing logical/physical block sizes */
4622 if (map->phys_blk_shift) {
4623 disk_block <<= map->phys_blk_shift;
4624 disk_block_cnt <<= map->phys_blk_shift;
4625 }
4626 BUG_ON(disk_block_cnt > 0xffff);
4627
4628 /* build the new CDB for the physical disk I/O */
4629 if (disk_block > 0xffffffff) {
4630 cdb[0] = is_write ? WRITE_16 : READ_16;
4631 cdb[1] = 0;
4632 cdb[2] = (u8) (disk_block >> 56);
4633 cdb[3] = (u8) (disk_block >> 48);
4634 cdb[4] = (u8) (disk_block >> 40);
4635 cdb[5] = (u8) (disk_block >> 32);
4636 cdb[6] = (u8) (disk_block >> 24);
4637 cdb[7] = (u8) (disk_block >> 16);
4638 cdb[8] = (u8) (disk_block >> 8);
4639 cdb[9] = (u8) (disk_block);
4640 cdb[10] = (u8) (disk_block_cnt >> 24);
4641 cdb[11] = (u8) (disk_block_cnt >> 16);
4642 cdb[12] = (u8) (disk_block_cnt >> 8);
4643 cdb[13] = (u8) (disk_block_cnt);
4644 cdb[14] = 0;
4645 cdb[15] = 0;
4646 cdb_len = 16;
4647 } else {
4648 cdb[0] = is_write ? WRITE_10 : READ_10;
4649 cdb[1] = 0;
4650 cdb[2] = (u8) (disk_block >> 24);
4651 cdb[3] = (u8) (disk_block >> 16);
4652 cdb[4] = (u8) (disk_block >> 8);
4653 cdb[5] = (u8) (disk_block);
4654 cdb[6] = 0;
4655 cdb[7] = (u8) (disk_block_cnt >> 8);
4656 cdb[8] = (u8) (disk_block_cnt);
4657 cdb[9] = 0;
4658 cdb_len = 10;
4659 }
4660 return hpsa_scsi_ioaccel_queue_command(h, c, disk_handle, cdb, cdb_len,
Don Brace03383732015-01-23 16:43:30 -06004661 dev->scsi3addr,
4662 dev->phys_disk[map_index]);
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06004663}
4664
Webb Scales25163bd2015-04-23 09:32:00 -05004665/*
4666 * Submit commands down the "normal" RAID stack path
4667 * All callers to hpsa_ciss_submit must check lockup_detected
4668 * beforehand, before (opt.) and after calling cmd_alloc
4669 */
Stephen Cameron574f05d2015-01-23 16:43:20 -06004670static int hpsa_ciss_submit(struct ctlr_info *h,
4671 struct CommandList *c, struct scsi_cmnd *cmd,
4672 unsigned char scsi3addr[])
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004673{
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004674 cmd->host_scribble = (unsigned char *) c;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004675 c->cmd_type = CMD_SCSI;
4676 c->scsi_cmd = cmd;
4677 c->Header.ReplyQueue = 0; /* unused in simple mode */
4678 memcpy(&c->Header.LUN.LunAddrBytes[0], &scsi3addr[0], 8);
Don Bracef2405db2015-01-23 16:43:09 -06004679 c->Header.tag = cpu_to_le64((c->cmdindex << DIRECT_LOOKUP_SHIFT));
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004680
4681 /* Fill in the request block... */
4682
4683 c->Request.Timeout = 0;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004684 BUG_ON(cmd->cmd_len > sizeof(c->Request.CDB));
4685 c->Request.CDBLen = cmd->cmd_len;
4686 memcpy(c->Request.CDB, cmd->cmnd, cmd->cmd_len);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004687 switch (cmd->sc_data_direction) {
4688 case DMA_TO_DEVICE:
Stephen M. Camerona505b862014-11-14 17:27:04 -06004689 c->Request.type_attr_dir =
4690 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_WRITE);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004691 break;
4692 case DMA_FROM_DEVICE:
Stephen M. Camerona505b862014-11-14 17:27:04 -06004693 c->Request.type_attr_dir =
4694 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_READ);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004695 break;
4696 case DMA_NONE:
Stephen M. Camerona505b862014-11-14 17:27:04 -06004697 c->Request.type_attr_dir =
4698 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_NONE);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004699 break;
4700 case DMA_BIDIRECTIONAL:
4701 /* This can happen if a buggy application does a scsi passthru
4702 * and sets both inlen and outlen to non-zero. ( see
4703 * ../scsi/scsi_ioctl.c:scsi_ioctl_send_command() )
4704 */
4705
Stephen M. Camerona505b862014-11-14 17:27:04 -06004706 c->Request.type_attr_dir =
4707 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_RSVD);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004708 /* This is technically wrong, and hpsa controllers should
4709 * reject it with CMD_INVALID, which is the most correct
4710 * response, but non-fibre backends appear to let it
4711 * slide by, and give the same results as if this field
4712 * were set correctly. Either way is acceptable for
4713 * our purposes here.
4714 */
4715
4716 break;
4717
4718 default:
4719 dev_err(&h->pdev->dev, "unknown data direction: %d\n",
4720 cmd->sc_data_direction);
4721 BUG();
4722 break;
4723 }
4724
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06004725 if (hpsa_scatter_gather(h, c, cmd) < 0) { /* Fill SG list */
Webb Scales73153fe2015-04-23 09:35:04 -05004726 hpsa_cmd_resolve_and_free(h, c);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004727 return SCSI_MLQUEUE_HOST_BUSY;
4728 }
4729 enqueue_cmd_and_start_io(h, c);
4730 /* the cmd'll come back via intr handler in complete_scsi_command() */
4731 return 0;
4732}
4733
Stephen Cameron360c73b2015-04-23 09:32:32 -05004734static void hpsa_cmd_init(struct ctlr_info *h, int index,
4735 struct CommandList *c)
4736{
4737 dma_addr_t cmd_dma_handle, err_dma_handle;
4738
4739 /* Zero out all of commandlist except the last field, refcount */
4740 memset(c, 0, offsetof(struct CommandList, refcount));
4741 c->Header.tag = cpu_to_le64((u64) (index << DIRECT_LOOKUP_SHIFT));
4742 cmd_dma_handle = h->cmd_pool_dhandle + index * sizeof(*c);
4743 c->err_info = h->errinfo_pool + index;
4744 memset(c->err_info, 0, sizeof(*c->err_info));
4745 err_dma_handle = h->errinfo_pool_dhandle
4746 + index * sizeof(*c->err_info);
4747 c->cmdindex = index;
4748 c->busaddr = (u32) cmd_dma_handle;
4749 c->ErrDesc.Addr = cpu_to_le64((u64) err_dma_handle);
4750 c->ErrDesc.Len = cpu_to_le32((u32) sizeof(*c->err_info));
4751 c->h = h;
Webb Scalesa58e7e52015-04-23 09:34:16 -05004752 c->scsi_cmd = SCSI_CMD_IDLE;
Stephen Cameron360c73b2015-04-23 09:32:32 -05004753}
4754
4755static void hpsa_preinitialize_commands(struct ctlr_info *h)
4756{
4757 int i;
4758
4759 for (i = 0; i < h->nr_cmds; i++) {
4760 struct CommandList *c = h->cmd_pool + i;
4761
4762 hpsa_cmd_init(h, i, c);
4763 atomic_set(&c->refcount, 0);
4764 }
4765}
4766
4767static inline void hpsa_cmd_partial_init(struct ctlr_info *h, int index,
4768 struct CommandList *c)
4769{
4770 dma_addr_t cmd_dma_handle = h->cmd_pool_dhandle + index * sizeof(*c);
4771
Webb Scales73153fe2015-04-23 09:35:04 -05004772 BUG_ON(c->cmdindex != index);
4773
Stephen Cameron360c73b2015-04-23 09:32:32 -05004774 memset(c->Request.CDB, 0, sizeof(c->Request.CDB));
4775 memset(c->err_info, 0, sizeof(*c->err_info));
4776 c->busaddr = (u32) cmd_dma_handle;
4777}
4778
Webb Scales592a0ad2015-04-23 09:32:48 -05004779static int hpsa_ioaccel_submit(struct ctlr_info *h,
4780 struct CommandList *c, struct scsi_cmnd *cmd,
4781 unsigned char *scsi3addr)
4782{
4783 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
4784 int rc = IO_ACCEL_INELIGIBLE;
4785
4786 cmd->host_scribble = (unsigned char *) c;
4787
4788 if (dev->offload_enabled) {
4789 hpsa_cmd_init(h, c->cmdindex, c);
4790 c->cmd_type = CMD_SCSI;
4791 c->scsi_cmd = cmd;
4792 rc = hpsa_scsi_ioaccel_raid_map(h, c);
4793 if (rc < 0) /* scsi_dma_map failed. */
4794 rc = SCSI_MLQUEUE_HOST_BUSY;
Joe Handzika3144e02015-04-23 09:32:59 -05004795 } else if (dev->hba_ioaccel_enabled) {
Webb Scales592a0ad2015-04-23 09:32:48 -05004796 hpsa_cmd_init(h, c->cmdindex, c);
4797 c->cmd_type = CMD_SCSI;
4798 c->scsi_cmd = cmd;
4799 rc = hpsa_scsi_ioaccel_direct_map(h, c);
4800 if (rc < 0) /* scsi_dma_map failed. */
4801 rc = SCSI_MLQUEUE_HOST_BUSY;
4802 }
4803 return rc;
4804}
4805
Don Brace080ef1c2015-01-23 16:43:25 -06004806static void hpsa_command_resubmit_worker(struct work_struct *work)
4807{
4808 struct scsi_cmnd *cmd;
4809 struct hpsa_scsi_dev_t *dev;
Webb Scales8a0ff922015-04-23 09:34:11 -05004810 struct CommandList *c = container_of(work, struct CommandList, work);
Don Brace080ef1c2015-01-23 16:43:25 -06004811
4812 cmd = c->scsi_cmd;
4813 dev = cmd->device->hostdata;
4814 if (!dev) {
4815 cmd->result = DID_NO_CONNECT << 16;
Webb Scales8a0ff922015-04-23 09:34:11 -05004816 return hpsa_cmd_free_and_done(c->h, c, cmd);
Don Brace080ef1c2015-01-23 16:43:25 -06004817 }
Webb Scalesd604f532015-04-23 09:35:22 -05004818 if (c->reset_pending)
4819 return hpsa_cmd_resolve_and_free(c->h, c);
Webb Scalesa58e7e52015-04-23 09:34:16 -05004820 if (c->abort_pending)
4821 return hpsa_cmd_abort_and_free(c->h, c, cmd);
Webb Scales592a0ad2015-04-23 09:32:48 -05004822 if (c->cmd_type == CMD_IOACCEL2) {
4823 struct ctlr_info *h = c->h;
4824 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
4825 int rc;
4826
4827 if (c2->error_data.serv_response ==
4828 IOACCEL2_STATUS_SR_TASK_COMP_SET_FULL) {
4829 rc = hpsa_ioaccel_submit(h, c, cmd, dev->scsi3addr);
4830 if (rc == 0)
4831 return;
4832 if (rc == SCSI_MLQUEUE_HOST_BUSY) {
4833 /*
4834 * If we get here, it means dma mapping failed.
4835 * Try again via scsi mid layer, which will
4836 * then get SCSI_MLQUEUE_HOST_BUSY.
4837 */
4838 cmd->result = DID_IMM_RETRY << 16;
Webb Scales8a0ff922015-04-23 09:34:11 -05004839 return hpsa_cmd_free_and_done(h, c, cmd);
Webb Scales592a0ad2015-04-23 09:32:48 -05004840 }
4841 /* else, fall thru and resubmit down CISS path */
4842 }
4843 }
Stephen Cameron360c73b2015-04-23 09:32:32 -05004844 hpsa_cmd_partial_init(c->h, c->cmdindex, c);
Don Brace080ef1c2015-01-23 16:43:25 -06004845 if (hpsa_ciss_submit(c->h, c, cmd, dev->scsi3addr)) {
4846 /*
4847 * If we get here, it means dma mapping failed. Try
4848 * again via scsi mid layer, which will then get
4849 * SCSI_MLQUEUE_HOST_BUSY.
Webb Scales592a0ad2015-04-23 09:32:48 -05004850 *
4851 * hpsa_ciss_submit will have already freed c
4852 * if it encountered a dma mapping failure.
Don Brace080ef1c2015-01-23 16:43:25 -06004853 */
4854 cmd->result = DID_IMM_RETRY << 16;
4855 cmd->scsi_done(cmd);
4856 }
4857}
4858
Stephen Cameron574f05d2015-01-23 16:43:20 -06004859/* Running in struct Scsi_Host->host_lock less mode */
4860static int hpsa_scsi_queue_command(struct Scsi_Host *sh, struct scsi_cmnd *cmd)
4861{
4862 struct ctlr_info *h;
4863 struct hpsa_scsi_dev_t *dev;
4864 unsigned char scsi3addr[8];
4865 struct CommandList *c;
4866 int rc = 0;
4867
4868 /* Get the ptr to our adapter structure out of cmd->host. */
4869 h = sdev_to_hba(cmd->device);
Webb Scales73153fe2015-04-23 09:35:04 -05004870
4871 BUG_ON(cmd->request->tag < 0);
4872
Stephen Cameron574f05d2015-01-23 16:43:20 -06004873 dev = cmd->device->hostdata;
4874 if (!dev) {
4875 cmd->result = DID_NO_CONNECT << 16;
4876 cmd->scsi_done(cmd);
4877 return 0;
4878 }
Webb Scales73153fe2015-04-23 09:35:04 -05004879
Stephen Cameron574f05d2015-01-23 16:43:20 -06004880 memcpy(scsi3addr, dev->scsi3addr, sizeof(scsi3addr));
4881
4882 if (unlikely(lockup_detected(h))) {
Webb Scales25163bd2015-04-23 09:32:00 -05004883 cmd->result = DID_NO_CONNECT << 16;
Stephen Cameron574f05d2015-01-23 16:43:20 -06004884 cmd->scsi_done(cmd);
4885 return 0;
4886 }
Webb Scales73153fe2015-04-23 09:35:04 -05004887 c = cmd_tagged_alloc(h, cmd);
Stephen Cameron574f05d2015-01-23 16:43:20 -06004888
Stephen Cameron407863c2015-01-23 16:44:19 -06004889 /*
4890 * Call alternate submit routine for I/O accelerated commands.
Stephen Cameron574f05d2015-01-23 16:43:20 -06004891 * Retries always go down the normal I/O path.
4892 */
4893 if (likely(cmd->retries == 0 &&
4894 cmd->request->cmd_type == REQ_TYPE_FS &&
4895 h->acciopath_status)) {
Webb Scales592a0ad2015-04-23 09:32:48 -05004896 rc = hpsa_ioaccel_submit(h, c, cmd, scsi3addr);
4897 if (rc == 0)
4898 return 0;
4899 if (rc == SCSI_MLQUEUE_HOST_BUSY) {
Webb Scales73153fe2015-04-23 09:35:04 -05004900 hpsa_cmd_resolve_and_free(h, c);
Webb Scales592a0ad2015-04-23 09:32:48 -05004901 return SCSI_MLQUEUE_HOST_BUSY;
Stephen Cameron574f05d2015-01-23 16:43:20 -06004902 }
4903 }
4904 return hpsa_ciss_submit(h, c, cmd, scsi3addr);
4905}
4906
Webb Scales8ebc9242015-01-23 16:44:50 -06004907static void hpsa_scan_complete(struct ctlr_info *h)
Stephen M. Cameron5f389362014-02-18 13:55:48 -06004908{
4909 unsigned long flags;
4910
Webb Scales8ebc9242015-01-23 16:44:50 -06004911 spin_lock_irqsave(&h->scan_lock, flags);
4912 h->scan_finished = 1;
4913 wake_up_all(&h->scan_wait_queue);
4914 spin_unlock_irqrestore(&h->scan_lock, flags);
Stephen M. Cameron5f389362014-02-18 13:55:48 -06004915}
4916
Stephen M. Camerona08a8472010-02-04 08:43:16 -06004917static void hpsa_scan_start(struct Scsi_Host *sh)
4918{
4919 struct ctlr_info *h = shost_to_hba(sh);
4920 unsigned long flags;
4921
Webb Scales8ebc9242015-01-23 16:44:50 -06004922 /*
4923 * Don't let rescans be initiated on a controller known to be locked
4924 * up. If the controller locks up *during* a rescan, that thread is
4925 * probably hosed, but at least we can prevent new rescan threads from
4926 * piling up on a locked up controller.
4927 */
4928 if (unlikely(lockup_detected(h)))
4929 return hpsa_scan_complete(h);
Stephen M. Cameron5f389362014-02-18 13:55:48 -06004930
Stephen M. Camerona08a8472010-02-04 08:43:16 -06004931 /* wait until any scan already in progress is finished. */
4932 while (1) {
4933 spin_lock_irqsave(&h->scan_lock, flags);
4934 if (h->scan_finished)
4935 break;
4936 spin_unlock_irqrestore(&h->scan_lock, flags);
4937 wait_event(h->scan_wait_queue, h->scan_finished);
4938 /* Note: We don't need to worry about a race between this
4939 * thread and driver unload because the midlayer will
4940 * have incremented the reference count, so unload won't
4941 * happen if we're in here.
4942 */
4943 }
4944 h->scan_finished = 0; /* mark scan as in progress */
4945 spin_unlock_irqrestore(&h->scan_lock, flags);
4946
Webb Scales8ebc9242015-01-23 16:44:50 -06004947 if (unlikely(lockup_detected(h)))
4948 return hpsa_scan_complete(h);
Stephen M. Cameron5f389362014-02-18 13:55:48 -06004949
Stephen M. Camerona08a8472010-02-04 08:43:16 -06004950 hpsa_update_scsi_devices(h, h->scsi_host->host_no);
4951
Webb Scales8ebc9242015-01-23 16:44:50 -06004952 hpsa_scan_complete(h);
Stephen M. Camerona08a8472010-02-04 08:43:16 -06004953}
4954
Don Brace7c0a0222015-01-23 16:41:30 -06004955static int hpsa_change_queue_depth(struct scsi_device *sdev, int qdepth)
4956{
Don Brace03383732015-01-23 16:43:30 -06004957 struct hpsa_scsi_dev_t *logical_drive = sdev->hostdata;
4958
4959 if (!logical_drive)
4960 return -ENODEV;
Don Brace7c0a0222015-01-23 16:41:30 -06004961
4962 if (qdepth < 1)
4963 qdepth = 1;
Don Brace03383732015-01-23 16:43:30 -06004964 else if (qdepth > logical_drive->queue_depth)
4965 qdepth = logical_drive->queue_depth;
4966
4967 return scsi_change_queue_depth(sdev, qdepth);
Don Brace7c0a0222015-01-23 16:41:30 -06004968}
4969
Stephen M. Camerona08a8472010-02-04 08:43:16 -06004970static int hpsa_scan_finished(struct Scsi_Host *sh,
4971 unsigned long elapsed_time)
4972{
4973 struct ctlr_info *h = shost_to_hba(sh);
4974 unsigned long flags;
4975 int finished;
4976
4977 spin_lock_irqsave(&h->scan_lock, flags);
4978 finished = h->scan_finished;
4979 spin_unlock_irqrestore(&h->scan_lock, flags);
4980 return finished;
4981}
4982
Robert Elliott2946e822015-04-23 09:35:09 -05004983static int hpsa_scsi_host_alloc(struct ctlr_info *h)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004984{
Stephen M. Cameronb7056902012-01-19 14:00:53 -06004985 struct Scsi_Host *sh;
4986 int error;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08004987
Stephen M. Cameronb7056902012-01-19 14:00:53 -06004988 sh = scsi_host_alloc(&hpsa_driver_template, sizeof(h));
Robert Elliott2946e822015-04-23 09:35:09 -05004989 if (sh == NULL) {
4990 dev_err(&h->pdev->dev, "scsi_host_alloc failed\n");
4991 return -ENOMEM;
4992 }
Stephen M. Cameronb7056902012-01-19 14:00:53 -06004993
4994 sh->io_port = 0;
4995 sh->n_io_port = 0;
4996 sh->this_id = -1;
4997 sh->max_channel = 3;
4998 sh->max_cmd_len = MAX_COMMAND_SIZE;
4999 sh->max_lun = HPSA_MAX_LUN;
5000 sh->max_id = HPSA_MAX_LUN;
Stephen Cameron41ce4c32015-04-23 09:31:47 -05005001 sh->can_queue = h->nr_cmds - HPSA_NRESERVED_CMDS;
Don Brace03383732015-01-23 16:43:30 -06005002 sh->cmd_per_lun = sh->can_queue;
Stephen M. Cameronb7056902012-01-19 14:00:53 -06005003 sh->sg_tablesize = h->maxsgentries;
Stephen M. Cameronb7056902012-01-19 14:00:53 -06005004 sh->hostdata[0] = (unsigned long) h;
5005 sh->irq = h->intr[h->intr_mode];
5006 sh->unique_id = sh->irq;
Webb Scales73153fe2015-04-23 09:35:04 -05005007 error = scsi_init_shared_tag_map(sh, sh->can_queue);
5008 if (error) {
5009 dev_err(&h->pdev->dev,
5010 "%s: scsi_init_shared_tag_map failed for controller %d\n",
5011 __func__, h->ctlr);
Robert Elliott2946e822015-04-23 09:35:09 -05005012 scsi_host_put(sh);
5013 return error;
Webb Scales73153fe2015-04-23 09:35:04 -05005014 }
Robert Elliott2946e822015-04-23 09:35:09 -05005015 h->scsi_host = sh;
Stephen M. Cameronb7056902012-01-19 14:00:53 -06005016 return 0;
Robert Elliott2946e822015-04-23 09:35:09 -05005017}
Stephen M. Cameronb7056902012-01-19 14:00:53 -06005018
Robert Elliott2946e822015-04-23 09:35:09 -05005019static int hpsa_scsi_add_host(struct ctlr_info *h)
5020{
5021 int rv;
5022
5023 rv = scsi_add_host(h->scsi_host, &h->pdev->dev);
5024 if (rv) {
5025 dev_err(&h->pdev->dev, "scsi_add_host failed\n");
5026 return rv;
5027 }
5028 scsi_scan_host(h->scsi_host);
5029 return 0;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005030}
5031
Webb Scalesb69324f2015-04-23 09:34:22 -05005032/*
Webb Scales73153fe2015-04-23 09:35:04 -05005033 * The block layer has already gone to the trouble of picking out a unique,
5034 * small-integer tag for this request. We use an offset from that value as
5035 * an index to select our command block. (The offset allows us to reserve the
5036 * low-numbered entries for our own uses.)
5037 */
5038static int hpsa_get_cmd_index(struct scsi_cmnd *scmd)
5039{
5040 int idx = scmd->request->tag;
5041
5042 if (idx < 0)
5043 return idx;
5044
5045 /* Offset to leave space for internal cmds. */
5046 return idx += HPSA_NRESERVED_CMDS;
5047}
5048
5049/*
Webb Scalesb69324f2015-04-23 09:34:22 -05005050 * Send a TEST_UNIT_READY command to the specified LUN using the specified
5051 * reply queue; returns zero if the unit is ready, and non-zero otherwise.
5052 */
5053static int hpsa_send_test_unit_ready(struct ctlr_info *h,
5054 struct CommandList *c, unsigned char lunaddr[],
5055 int reply_queue)
5056{
5057 int rc;
5058
5059 /* Send the Test Unit Ready, fill_cmd can't fail, no mapping */
5060 (void) fill_cmd(c, TEST_UNIT_READY, h,
5061 NULL, 0, 0, lunaddr, TYPE_CMD);
5062 rc = hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT);
5063 if (rc)
5064 return rc;
5065 /* no unmap needed here because no data xfer. */
5066
5067 /* Check if the unit is already ready. */
5068 if (c->err_info->CommandStatus == CMD_SUCCESS)
5069 return 0;
5070
5071 /*
5072 * The first command sent after reset will receive "unit attention" to
5073 * indicate that the LUN has been reset...this is actually what we're
5074 * looking for (but, success is good too).
5075 */
5076 if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
5077 c->err_info->ScsiStatus == SAM_STAT_CHECK_CONDITION &&
5078 (c->err_info->SenseInfo[2] == NO_SENSE ||
5079 c->err_info->SenseInfo[2] == UNIT_ATTENTION))
5080 return 0;
5081
5082 return 1;
5083}
5084
5085/*
5086 * Wait for a TEST_UNIT_READY command to complete, retrying as necessary;
5087 * returns zero when the unit is ready, and non-zero when giving up.
5088 */
5089static int hpsa_wait_for_test_unit_ready(struct ctlr_info *h,
5090 struct CommandList *c,
5091 unsigned char lunaddr[], int reply_queue)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005092{
Tomas Henzl89193582014-02-21 16:25:05 -06005093 int rc;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005094 int count = 0;
5095 int waittime = 1; /* seconds */
Webb Scalesb69324f2015-04-23 09:34:22 -05005096
5097 /* Send test unit ready until device ready, or give up. */
5098 for (count = 0; count < HPSA_TUR_RETRY_LIMIT; count++) {
5099
5100 /*
5101 * Wait for a bit. do this first, because if we send
5102 * the TUR right away, the reset will just abort it.
5103 */
5104 msleep(1000 * waittime);
5105
5106 rc = hpsa_send_test_unit_ready(h, c, lunaddr, reply_queue);
5107 if (!rc)
5108 break;
5109
5110 /* Increase wait time with each try, up to a point. */
5111 if (waittime < HPSA_MAX_WAIT_INTERVAL_SECS)
5112 waittime *= 2;
5113
5114 dev_warn(&h->pdev->dev,
5115 "waiting %d secs for device to become ready.\n",
5116 waittime);
5117 }
5118
5119 return rc;
5120}
5121
5122static int wait_for_device_to_become_ready(struct ctlr_info *h,
5123 unsigned char lunaddr[],
5124 int reply_queue)
5125{
5126 int first_queue;
5127 int last_queue;
5128 int rq;
5129 int rc = 0;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005130 struct CommandList *c;
5131
Stephen Cameron45fcb862015-01-23 16:43:04 -06005132 c = cmd_alloc(h);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005133
Webb Scalesb69324f2015-04-23 09:34:22 -05005134 /*
5135 * If no specific reply queue was requested, then send the TUR
5136 * repeatedly, requesting a reply on each reply queue; otherwise execute
5137 * the loop exactly once using only the specified queue.
5138 */
5139 if (reply_queue == DEFAULT_REPLY_QUEUE) {
5140 first_queue = 0;
5141 last_queue = h->nreply_queues - 1;
5142 } else {
5143 first_queue = reply_queue;
5144 last_queue = reply_queue;
5145 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005146
Webb Scalesb69324f2015-04-23 09:34:22 -05005147 for (rq = first_queue; rq <= last_queue; rq++) {
5148 rc = hpsa_wait_for_test_unit_ready(h, c, lunaddr, rq);
Webb Scales25163bd2015-04-23 09:32:00 -05005149 if (rc)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005150 break;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005151 }
5152
5153 if (rc)
5154 dev_warn(&h->pdev->dev, "giving up on device.\n");
5155 else
5156 dev_warn(&h->pdev->dev, "device is ready.\n");
5157
Stephen Cameron45fcb862015-01-23 16:43:04 -06005158 cmd_free(h, c);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005159 return rc;
5160}
5161
5162/* Need at least one of these error handlers to keep ../scsi/hosts.c from
5163 * complaining. Doing a host- or bus-reset can't do anything good here.
5164 */
5165static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd)
5166{
5167 int rc;
5168 struct ctlr_info *h;
5169 struct hpsa_scsi_dev_t *dev;
Dan Carpenter2dc127b2015-06-04 17:47:56 +03005170 char msg[48];
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005171
5172 /* find the controller to which the command to be aborted was sent */
5173 h = sdev_to_hba(scsicmd->device);
5174 if (h == NULL) /* paranoia */
5175 return FAILED;
Don Bracee3458932015-01-23 16:44:24 -06005176
5177 if (lockup_detected(h))
5178 return FAILED;
5179
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005180 dev = scsicmd->device->hostdata;
5181 if (!dev) {
Webb Scalesd604f532015-04-23 09:35:22 -05005182 dev_err(&h->pdev->dev, "%s: device lookup failed\n", __func__);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005183 return FAILED;
5184 }
Webb Scales25163bd2015-04-23 09:32:00 -05005185
5186 /* if controller locked up, we can guarantee command won't complete */
5187 if (lockup_detected(h)) {
Dan Carpenter2dc127b2015-06-04 17:47:56 +03005188 snprintf(msg, sizeof(msg),
5189 "cmd %d RESET FAILED, lockup detected",
5190 hpsa_get_cmd_index(scsicmd));
Webb Scales73153fe2015-04-23 09:35:04 -05005191 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
Webb Scales25163bd2015-04-23 09:32:00 -05005192 return FAILED;
5193 }
5194
5195 /* this reset request might be the result of a lockup; check */
5196 if (detect_controller_lockup(h)) {
Dan Carpenter2dc127b2015-06-04 17:47:56 +03005197 snprintf(msg, sizeof(msg),
5198 "cmd %d RESET FAILED, new lockup detected",
5199 hpsa_get_cmd_index(scsicmd));
Webb Scales73153fe2015-04-23 09:35:04 -05005200 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
Webb Scales25163bd2015-04-23 09:32:00 -05005201 return FAILED;
5202 }
5203
Webb Scalesd604f532015-04-23 09:35:22 -05005204 /* Do not attempt on controller */
5205 if (is_hba_lunid(dev->scsi3addr))
5206 return SUCCESS;
5207
Webb Scales25163bd2015-04-23 09:32:00 -05005208 hpsa_show_dev_msg(KERN_WARNING, h, dev, "resetting");
5209
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005210 /* send a reset to the SCSI LUN which the command was sent to */
Webb Scalesd604f532015-04-23 09:35:22 -05005211 rc = hpsa_do_reset(h, dev, dev->scsi3addr, HPSA_RESET_TYPE_LUN,
5212 DEFAULT_REPLY_QUEUE);
Dan Carpenter2dc127b2015-06-04 17:47:56 +03005213 snprintf(msg, sizeof(msg), "reset %s",
5214 rc == 0 ? "completed successfully" : "failed");
Webb Scalesd604f532015-04-23 09:35:22 -05005215 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
5216 return rc == 0 ? SUCCESS : FAILED;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005217}
5218
Stephen M. Cameron6cba3f12012-05-01 11:42:56 -05005219static void swizzle_abort_tag(u8 *tag)
5220{
5221 u8 original_tag[8];
5222
5223 memcpy(original_tag, tag, 8);
5224 tag[0] = original_tag[3];
5225 tag[1] = original_tag[2];
5226 tag[2] = original_tag[1];
5227 tag[3] = original_tag[0];
5228 tag[4] = original_tag[7];
5229 tag[5] = original_tag[6];
5230 tag[6] = original_tag[5];
5231 tag[7] = original_tag[4];
5232}
5233
Scott Teel17eb87d2014-02-18 13:55:28 -06005234static void hpsa_get_tag(struct ctlr_info *h,
Don Brace2b08b3e2015-01-23 16:41:09 -06005235 struct CommandList *c, __le32 *taglower, __le32 *tagupper)
Scott Teel17eb87d2014-02-18 13:55:28 -06005236{
Don Brace2b08b3e2015-01-23 16:41:09 -06005237 u64 tag;
Scott Teel17eb87d2014-02-18 13:55:28 -06005238 if (c->cmd_type == CMD_IOACCEL1) {
5239 struct io_accel1_cmd *cm1 = (struct io_accel1_cmd *)
5240 &h->ioaccel_cmd_pool[c->cmdindex];
Don Brace2b08b3e2015-01-23 16:41:09 -06005241 tag = le64_to_cpu(cm1->tag);
5242 *tagupper = cpu_to_le32(tag >> 32);
5243 *taglower = cpu_to_le32(tag);
Scott Teel54b6e9e2014-02-18 13:56:45 -06005244 return;
Scott Teel17eb87d2014-02-18 13:55:28 -06005245 }
Scott Teel54b6e9e2014-02-18 13:56:45 -06005246 if (c->cmd_type == CMD_IOACCEL2) {
5247 struct io_accel2_cmd *cm2 = (struct io_accel2_cmd *)
5248 &h->ioaccel2_cmd_pool[c->cmdindex];
Scott Teeldd0e19f2014-02-18 13:57:31 -06005249 /* upper tag not used in ioaccel2 mode */
5250 memset(tagupper, 0, sizeof(*tagupper));
5251 *taglower = cm2->Tag;
Scott Teel54b6e9e2014-02-18 13:56:45 -06005252 return;
5253 }
Don Brace2b08b3e2015-01-23 16:41:09 -06005254 tag = le64_to_cpu(c->Header.tag);
5255 *tagupper = cpu_to_le32(tag >> 32);
5256 *taglower = cpu_to_le32(tag);
Scott Teel17eb87d2014-02-18 13:55:28 -06005257}
5258
Stephen M. Cameron75167d22012-05-01 11:42:51 -05005259static int hpsa_send_abort(struct ctlr_info *h, unsigned char *scsi3addr,
Stephen Cameron9b5c48c2015-04-23 09:32:06 -05005260 struct CommandList *abort, int reply_queue)
Stephen M. Cameron75167d22012-05-01 11:42:51 -05005261{
5262 int rc = IO_OK;
5263 struct CommandList *c;
5264 struct ErrorInfo *ei;
Don Brace2b08b3e2015-01-23 16:41:09 -06005265 __le32 tagupper, taglower;
Stephen M. Cameron75167d22012-05-01 11:42:51 -05005266
Stephen Cameron45fcb862015-01-23 16:43:04 -06005267 c = cmd_alloc(h);
Stephen M. Cameron75167d22012-05-01 11:42:51 -05005268
Stephen M. Camerona2dac132013-02-20 11:24:41 -06005269 /* fill_cmd can't fail here, no buffer to map */
Stephen Cameron9b5c48c2015-04-23 09:32:06 -05005270 (void) fill_cmd(c, HPSA_ABORT_MSG, h, &abort->Header.tag,
Stephen M. Camerona2dac132013-02-20 11:24:41 -06005271 0, 0, scsi3addr, TYPE_MSG);
Stephen Cameron9b5c48c2015-04-23 09:32:06 -05005272 if (h->needs_abort_tags_swizzled)
Stephen M. Cameron6cba3f12012-05-01 11:42:56 -05005273 swizzle_abort_tag(&c->Request.CDB[4]);
Webb Scales25163bd2015-04-23 09:32:00 -05005274 (void) hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT);
Scott Teel17eb87d2014-02-18 13:55:28 -06005275 hpsa_get_tag(h, abort, &taglower, &tagupper);
Webb Scales25163bd2015-04-23 09:32:00 -05005276 dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: do_simple_cmd(abort) completed.\n",
Scott Teel17eb87d2014-02-18 13:55:28 -06005277 __func__, tagupper, taglower);
Stephen M. Cameron75167d22012-05-01 11:42:51 -05005278 /* no unmap needed here because no data xfer. */
5279
5280 ei = c->err_info;
5281 switch (ei->CommandStatus) {
5282 case CMD_SUCCESS:
5283 break;
Stephen Cameron9437ac42015-04-23 09:32:16 -05005284 case CMD_TMF_STATUS:
5285 rc = hpsa_evaluate_tmf_status(h, c);
5286 break;
Stephen M. Cameron75167d22012-05-01 11:42:51 -05005287 case CMD_UNABORTABLE: /* Very common, don't make noise. */
5288 rc = -1;
5289 break;
5290 default:
5291 dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: interpreting error.\n",
Scott Teel17eb87d2014-02-18 13:55:28 -06005292 __func__, tagupper, taglower);
Stephen M. Camerond1e8bea2014-02-18 13:57:47 -06005293 hpsa_scsi_interpret_error(h, c);
Stephen M. Cameron75167d22012-05-01 11:42:51 -05005294 rc = -1;
5295 break;
5296 }
Stephen Cameron45fcb862015-01-23 16:43:04 -06005297 cmd_free(h, c);
Scott Teeldd0e19f2014-02-18 13:57:31 -06005298 dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: Finished.\n",
5299 __func__, tagupper, taglower);
Stephen M. Cameron75167d22012-05-01 11:42:51 -05005300 return rc;
5301}
5302
Stephen Cameron8be986c2015-04-23 09:34:06 -05005303static void setup_ioaccel2_abort_cmd(struct CommandList *c, struct ctlr_info *h,
5304 struct CommandList *command_to_abort, int reply_queue)
5305{
5306 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
5307 struct hpsa_tmf_struct *ac = (struct hpsa_tmf_struct *) c2;
5308 struct io_accel2_cmd *c2a =
5309 &h->ioaccel2_cmd_pool[command_to_abort->cmdindex];
Webb Scalesa58e7e52015-04-23 09:34:16 -05005310 struct scsi_cmnd *scmd = command_to_abort->scsi_cmd;
Stephen Cameron8be986c2015-04-23 09:34:06 -05005311 struct hpsa_scsi_dev_t *dev = scmd->device->hostdata;
5312
5313 /*
5314 * We're overlaying struct hpsa_tmf_struct on top of something which
5315 * was allocated as a struct io_accel2_cmd, so we better be sure it
5316 * actually fits, and doesn't overrun the error info space.
5317 */
5318 BUILD_BUG_ON(sizeof(struct hpsa_tmf_struct) >
5319 sizeof(struct io_accel2_cmd));
5320 BUG_ON(offsetof(struct io_accel2_cmd, error_data) <
5321 offsetof(struct hpsa_tmf_struct, error_len) +
5322 sizeof(ac->error_len));
5323
5324 c->cmd_type = IOACCEL2_TMF;
Webb Scalesa58e7e52015-04-23 09:34:16 -05005325 c->scsi_cmd = SCSI_CMD_BUSY;
5326
Stephen Cameron8be986c2015-04-23 09:34:06 -05005327 /* Adjust the DMA address to point to the accelerated command buffer */
5328 c->busaddr = (u32) h->ioaccel2_cmd_pool_dhandle +
5329 (c->cmdindex * sizeof(struct io_accel2_cmd));
5330 BUG_ON(c->busaddr & 0x0000007F);
5331
5332 memset(ac, 0, sizeof(*c2)); /* yes this is correct */
5333 ac->iu_type = IOACCEL2_IU_TMF_TYPE;
5334 ac->reply_queue = reply_queue;
5335 ac->tmf = IOACCEL2_TMF_ABORT;
5336 ac->it_nexus = cpu_to_le32(dev->ioaccel_handle);
5337 memset(ac->lun_id, 0, sizeof(ac->lun_id));
5338 ac->tag = cpu_to_le64(c->cmdindex << DIRECT_LOOKUP_SHIFT);
5339 ac->abort_tag = cpu_to_le64(le32_to_cpu(c2a->Tag));
5340 ac->error_ptr = cpu_to_le64(c->busaddr +
5341 offsetof(struct io_accel2_cmd, error_data));
5342 ac->error_len = cpu_to_le32(sizeof(c2->error_data));
5343}
5344
Scott Teel54b6e9e2014-02-18 13:56:45 -06005345/* ioaccel2 path firmware cannot handle abort task requests.
5346 * Change abort requests to physical target reset, and send to the
5347 * address of the physical disk used for the ioaccel 2 command.
5348 * Return 0 on success (IO_OK)
5349 * -1 on failure
5350 */
5351
5352static int hpsa_send_reset_as_abort_ioaccel2(struct ctlr_info *h,
Webb Scales25163bd2015-04-23 09:32:00 -05005353 unsigned char *scsi3addr, struct CommandList *abort, int reply_queue)
Scott Teel54b6e9e2014-02-18 13:56:45 -06005354{
5355 int rc = IO_OK;
5356 struct scsi_cmnd *scmd; /* scsi command within request being aborted */
5357 struct hpsa_scsi_dev_t *dev; /* device to which scsi cmd was sent */
5358 unsigned char phys_scsi3addr[8]; /* addr of phys disk with volume */
5359 unsigned char *psa = &phys_scsi3addr[0];
5360
5361 /* Get a pointer to the hpsa logical device. */
Stephen Cameron7fa30302015-01-23 16:44:30 -06005362 scmd = abort->scsi_cmd;
Scott Teel54b6e9e2014-02-18 13:56:45 -06005363 dev = (struct hpsa_scsi_dev_t *)(scmd->device->hostdata);
5364 if (dev == NULL) {
5365 dev_warn(&h->pdev->dev,
5366 "Cannot abort: no device pointer for command.\n");
5367 return -1; /* not abortable */
5368 }
5369
Stephen M. Cameron2ba8bfc2014-02-18 13:57:52 -06005370 if (h->raid_offload_debug > 0)
5371 dev_info(&h->pdev->dev,
Webb Scales0d96ef52015-04-23 09:31:55 -05005372 "scsi %d:%d:%d:%d %s scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
Stephen M. Cameron2ba8bfc2014-02-18 13:57:52 -06005373 h->scsi_host->host_no, dev->bus, dev->target, dev->lun,
Webb Scales0d96ef52015-04-23 09:31:55 -05005374 "Reset as abort",
Stephen M. Cameron2ba8bfc2014-02-18 13:57:52 -06005375 scsi3addr[0], scsi3addr[1], scsi3addr[2], scsi3addr[3],
5376 scsi3addr[4], scsi3addr[5], scsi3addr[6], scsi3addr[7]);
5377
Scott Teel54b6e9e2014-02-18 13:56:45 -06005378 if (!dev->offload_enabled) {
5379 dev_warn(&h->pdev->dev,
5380 "Can't abort: device is not operating in HP SSD Smart Path mode.\n");
5381 return -1; /* not abortable */
5382 }
5383
5384 /* Incoming scsi3addr is logical addr. We need physical disk addr. */
5385 if (!hpsa_get_pdisk_of_ioaccel2(h, abort, psa)) {
5386 dev_warn(&h->pdev->dev, "Can't abort: Failed lookup of physical address.\n");
5387 return -1; /* not abortable */
5388 }
5389
5390 /* send the reset */
Stephen M. Cameron2ba8bfc2014-02-18 13:57:52 -06005391 if (h->raid_offload_debug > 0)
5392 dev_info(&h->pdev->dev,
5393 "Reset as abort: Resetting physical device at scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
5394 psa[0], psa[1], psa[2], psa[3],
5395 psa[4], psa[5], psa[6], psa[7]);
Webb Scalesd604f532015-04-23 09:35:22 -05005396 rc = hpsa_do_reset(h, dev, psa, HPSA_RESET_TYPE_TARGET, reply_queue);
Scott Teel54b6e9e2014-02-18 13:56:45 -06005397 if (rc != 0) {
5398 dev_warn(&h->pdev->dev,
5399 "Reset as abort: Failed on physical device at scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
5400 psa[0], psa[1], psa[2], psa[3],
5401 psa[4], psa[5], psa[6], psa[7]);
5402 return rc; /* failed to reset */
5403 }
5404
5405 /* wait for device to recover */
Webb Scalesb69324f2015-04-23 09:34:22 -05005406 if (wait_for_device_to_become_ready(h, psa, reply_queue) != 0) {
Scott Teel54b6e9e2014-02-18 13:56:45 -06005407 dev_warn(&h->pdev->dev,
5408 "Reset as abort: Failed: Device never recovered from reset: 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
5409 psa[0], psa[1], psa[2], psa[3],
5410 psa[4], psa[5], psa[6], psa[7]);
5411 return -1; /* failed to recover */
5412 }
5413
5414 /* device recovered */
5415 dev_info(&h->pdev->dev,
5416 "Reset as abort: Device recovered from reset: scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
5417 psa[0], psa[1], psa[2], psa[3],
5418 psa[4], psa[5], psa[6], psa[7]);
5419
5420 return rc; /* success */
5421}
5422
Stephen Cameron8be986c2015-04-23 09:34:06 -05005423static int hpsa_send_abort_ioaccel2(struct ctlr_info *h,
5424 struct CommandList *abort, int reply_queue)
5425{
5426 int rc = IO_OK;
5427 struct CommandList *c;
5428 __le32 taglower, tagupper;
5429 struct hpsa_scsi_dev_t *dev;
5430 struct io_accel2_cmd *c2;
5431
5432 dev = abort->scsi_cmd->device->hostdata;
5433 if (!dev->offload_enabled && !dev->hba_ioaccel_enabled)
5434 return -1;
5435
5436 c = cmd_alloc(h);
5437 setup_ioaccel2_abort_cmd(c, h, abort, reply_queue);
5438 c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
5439 (void) hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT);
5440 hpsa_get_tag(h, abort, &taglower, &tagupper);
5441 dev_dbg(&h->pdev->dev,
5442 "%s: Tag:0x%08x:%08x: do_simple_cmd(ioaccel2 abort) completed.\n",
5443 __func__, tagupper, taglower);
5444 /* no unmap needed here because no data xfer. */
5445
5446 dev_dbg(&h->pdev->dev,
5447 "%s: Tag:0x%08x:%08x: abort service response = 0x%02x.\n",
5448 __func__, tagupper, taglower, c2->error_data.serv_response);
5449 switch (c2->error_data.serv_response) {
5450 case IOACCEL2_SERV_RESPONSE_TMF_COMPLETE:
5451 case IOACCEL2_SERV_RESPONSE_TMF_SUCCESS:
5452 rc = 0;
5453 break;
5454 case IOACCEL2_SERV_RESPONSE_TMF_REJECTED:
5455 case IOACCEL2_SERV_RESPONSE_FAILURE:
5456 case IOACCEL2_SERV_RESPONSE_TMF_WRONG_LUN:
5457 rc = -1;
5458 break;
5459 default:
5460 dev_warn(&h->pdev->dev,
5461 "%s: Tag:0x%08x:%08x: unknown abort service response 0x%02x\n",
5462 __func__, tagupper, taglower,
5463 c2->error_data.serv_response);
5464 rc = -1;
5465 }
5466 cmd_free(h, c);
5467 dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: Finished.\n", __func__,
5468 tagupper, taglower);
5469 return rc;
5470}
5471
Stephen M. Cameron6cba3f12012-05-01 11:42:56 -05005472static int hpsa_send_abort_both_ways(struct ctlr_info *h,
Webb Scales25163bd2015-04-23 09:32:00 -05005473 unsigned char *scsi3addr, struct CommandList *abort, int reply_queue)
Stephen M. Cameron6cba3f12012-05-01 11:42:56 -05005474{
Stephen Cameron8be986c2015-04-23 09:34:06 -05005475 /*
5476 * ioccelerator mode 2 commands should be aborted via the
Scott Teel54b6e9e2014-02-18 13:56:45 -06005477 * accelerated path, since RAID path is unaware of these commands,
Stephen Cameron8be986c2015-04-23 09:34:06 -05005478 * but not all underlying firmware can handle abort TMF.
5479 * Change abort to physical device reset when abort TMF is unsupported.
Scott Teel54b6e9e2014-02-18 13:56:45 -06005480 */
Stephen Cameron8be986c2015-04-23 09:34:06 -05005481 if (abort->cmd_type == CMD_IOACCEL2) {
5482 if (HPSATMF_IOACCEL_ENABLED & h->TMFSupportFlags)
5483 return hpsa_send_abort_ioaccel2(h, abort,
5484 reply_queue);
5485 else
5486 return hpsa_send_reset_as_abort_ioaccel2(h, scsi3addr,
Webb Scales25163bd2015-04-23 09:32:00 -05005487 abort, reply_queue);
Stephen Cameron8be986c2015-04-23 09:34:06 -05005488 }
Stephen Cameron9b5c48c2015-04-23 09:32:06 -05005489 return hpsa_send_abort(h, scsi3addr, abort, reply_queue);
Webb Scales25163bd2015-04-23 09:32:00 -05005490}
5491
5492/* Find out which reply queue a command was meant to return on */
5493static int hpsa_extract_reply_queue(struct ctlr_info *h,
5494 struct CommandList *c)
5495{
5496 if (c->cmd_type == CMD_IOACCEL2)
5497 return h->ioaccel2_cmd_pool[c->cmdindex].reply_queue;
5498 return c->Header.ReplyQueue;
Stephen M. Cameron6cba3f12012-05-01 11:42:56 -05005499}
5500
Stephen Cameron9b5c48c2015-04-23 09:32:06 -05005501/*
5502 * Limit concurrency of abort commands to prevent
5503 * over-subscription of commands
5504 */
5505static inline int wait_for_available_abort_cmd(struct ctlr_info *h)
5506{
5507#define ABORT_CMD_WAIT_MSECS 5000
5508 return !wait_event_timeout(h->abort_cmd_wait_queue,
5509 atomic_dec_if_positive(&h->abort_cmds_available) >= 0,
5510 msecs_to_jiffies(ABORT_CMD_WAIT_MSECS));
5511}
5512
Stephen M. Cameron75167d22012-05-01 11:42:51 -05005513/* Send an abort for the specified command.
5514 * If the device and controller support it,
5515 * send a task abort request.
5516 */
5517static int hpsa_eh_abort_handler(struct scsi_cmnd *sc)
5518{
5519
Webb Scalesa58e7e52015-04-23 09:34:16 -05005520 int rc;
Stephen M. Cameron75167d22012-05-01 11:42:51 -05005521 struct ctlr_info *h;
5522 struct hpsa_scsi_dev_t *dev;
5523 struct CommandList *abort; /* pointer to command to be aborted */
Stephen M. Cameron75167d22012-05-01 11:42:51 -05005524 struct scsi_cmnd *as; /* ptr to scsi cmd inside aborted command. */
5525 char msg[256]; /* For debug messaging. */
5526 int ml = 0;
Don Brace2b08b3e2015-01-23 16:41:09 -06005527 __le32 tagupper, taglower;
Webb Scales25163bd2015-04-23 09:32:00 -05005528 int refcount, reply_queue;
5529
5530 if (sc == NULL)
5531 return FAILED;
Stephen M. Cameron75167d22012-05-01 11:42:51 -05005532
Stephen Cameron9b5c48c2015-04-23 09:32:06 -05005533 if (sc->device == NULL)
5534 return FAILED;
5535
Stephen M. Cameron75167d22012-05-01 11:42:51 -05005536 /* Find the controller of the command to be aborted */
5537 h = sdev_to_hba(sc->device);
Stephen Cameron9b5c48c2015-04-23 09:32:06 -05005538 if (h == NULL)
Stephen M. Cameron75167d22012-05-01 11:42:51 -05005539 return FAILED;
5540
Webb Scales25163bd2015-04-23 09:32:00 -05005541 /* Find the device of the command to be aborted */
5542 dev = sc->device->hostdata;
5543 if (!dev) {
5544 dev_err(&h->pdev->dev, "%s FAILED, Device lookup failed.\n",
5545 msg);
Don Bracee3458932015-01-23 16:44:24 -06005546 return FAILED;
Webb Scales25163bd2015-04-23 09:32:00 -05005547 }
5548
5549 /* If controller locked up, we can guarantee command won't complete */
5550 if (lockup_detected(h)) {
5551 hpsa_show_dev_msg(KERN_WARNING, h, dev,
5552 "ABORT FAILED, lockup detected");
5553 return FAILED;
5554 }
5555
5556 /* This is a good time to check if controller lockup has occurred */
5557 if (detect_controller_lockup(h)) {
5558 hpsa_show_dev_msg(KERN_WARNING, h, dev,
5559 "ABORT FAILED, new lockup detected");
5560 return FAILED;
5561 }
Don Bracee3458932015-01-23 16:44:24 -06005562
Stephen M. Cameron75167d22012-05-01 11:42:51 -05005563 /* Check that controller supports some kind of task abort */
5564 if (!(HPSATMF_PHYS_TASK_ABORT & h->TMFSupportFlags) &&
5565 !(HPSATMF_LOG_TASK_ABORT & h->TMFSupportFlags))
5566 return FAILED;
5567
5568 memset(msg, 0, sizeof(msg));
Robert Elliott4b761552015-04-23 09:33:54 -05005569 ml += sprintf(msg+ml, "scsi %d:%d:%d:%llu %s %p",
Stephen M. Cameron75167d22012-05-01 11:42:51 -05005570 h->scsi_host->host_no, sc->device->channel,
Webb Scales0d96ef52015-04-23 09:31:55 -05005571 sc->device->id, sc->device->lun,
Robert Elliott4b761552015-04-23 09:33:54 -05005572 "Aborting command", sc);
Stephen M. Cameron75167d22012-05-01 11:42:51 -05005573
Stephen M. Cameron75167d22012-05-01 11:42:51 -05005574 /* Get SCSI command to be aborted */
5575 abort = (struct CommandList *) sc->host_scribble;
5576 if (abort == NULL) {
Webb Scales281a7fd2015-01-23 16:43:35 -06005577 /* This can happen if the command already completed. */
5578 return SUCCESS;
5579 }
5580 refcount = atomic_inc_return(&abort->refcount);
5581 if (refcount == 1) { /* Command is done already. */
5582 cmd_free(h, abort);
5583 return SUCCESS;
Stephen M. Cameron75167d22012-05-01 11:42:51 -05005584 }
Stephen Cameron9b5c48c2015-04-23 09:32:06 -05005585
5586 /* Don't bother trying the abort if we know it won't work. */
5587 if (abort->cmd_type != CMD_IOACCEL2 &&
5588 abort->cmd_type != CMD_IOACCEL1 && !dev->supports_aborts) {
5589 cmd_free(h, abort);
5590 return FAILED;
5591 }
5592
Webb Scalesa58e7e52015-04-23 09:34:16 -05005593 /*
5594 * Check that we're aborting the right command.
5595 * It's possible the CommandList already completed and got re-used.
5596 */
5597 if (abort->scsi_cmd != sc) {
5598 cmd_free(h, abort);
5599 return SUCCESS;
5600 }
5601
5602 abort->abort_pending = true;
Scott Teel17eb87d2014-02-18 13:55:28 -06005603 hpsa_get_tag(h, abort, &taglower, &tagupper);
Webb Scales25163bd2015-04-23 09:32:00 -05005604 reply_queue = hpsa_extract_reply_queue(h, abort);
Scott Teel17eb87d2014-02-18 13:55:28 -06005605 ml += sprintf(msg+ml, "Tag:0x%08x:%08x ", tagupper, taglower);
Stephen Cameron7fa30302015-01-23 16:44:30 -06005606 as = abort->scsi_cmd;
Stephen M. Cameron75167d22012-05-01 11:42:51 -05005607 if (as != NULL)
Robert Elliott4b761552015-04-23 09:33:54 -05005608 ml += sprintf(msg+ml,
5609 "CDBLen: %d CDB: 0x%02x%02x... SN: 0x%lx ",
5610 as->cmd_len, as->cmnd[0], as->cmnd[1],
5611 as->serial_number);
5612 dev_warn(&h->pdev->dev, "%s BEING SENT\n", msg);
Webb Scales0d96ef52015-04-23 09:31:55 -05005613 hpsa_show_dev_msg(KERN_WARNING, h, dev, "Aborting command");
Robert Elliott4b761552015-04-23 09:33:54 -05005614
Stephen M. Cameron75167d22012-05-01 11:42:51 -05005615 /*
5616 * Command is in flight, or possibly already completed
5617 * by the firmware (but not to the scsi mid layer) but we can't
5618 * distinguish which. Send the abort down.
5619 */
Stephen Cameron9b5c48c2015-04-23 09:32:06 -05005620 if (wait_for_available_abort_cmd(h)) {
5621 dev_warn(&h->pdev->dev,
Robert Elliott4b761552015-04-23 09:33:54 -05005622 "%s FAILED, timeout waiting for an abort command to become available.\n",
5623 msg);
Stephen Cameron9b5c48c2015-04-23 09:32:06 -05005624 cmd_free(h, abort);
5625 return FAILED;
5626 }
Webb Scales25163bd2015-04-23 09:32:00 -05005627 rc = hpsa_send_abort_both_ways(h, dev->scsi3addr, abort, reply_queue);
Stephen Cameron9b5c48c2015-04-23 09:32:06 -05005628 atomic_inc(&h->abort_cmds_available);
5629 wake_up_all(&h->abort_cmd_wait_queue);
Stephen M. Cameron75167d22012-05-01 11:42:51 -05005630 if (rc != 0) {
Robert Elliott4b761552015-04-23 09:33:54 -05005631 dev_warn(&h->pdev->dev, "%s SENT, FAILED\n", msg);
Webb Scales0d96ef52015-04-23 09:31:55 -05005632 hpsa_show_dev_msg(KERN_WARNING, h, dev,
Robert Elliott4b761552015-04-23 09:33:54 -05005633 "FAILED to abort command");
Webb Scales281a7fd2015-01-23 16:43:35 -06005634 cmd_free(h, abort);
Stephen M. Cameron75167d22012-05-01 11:42:51 -05005635 return FAILED;
5636 }
Robert Elliott4b761552015-04-23 09:33:54 -05005637 dev_info(&h->pdev->dev, "%s SENT, SUCCESS\n", msg);
Webb Scalesd604f532015-04-23 09:35:22 -05005638 wait_event(h->event_sync_wait_queue,
Webb Scalesa58e7e52015-04-23 09:34:16 -05005639 abort->scsi_cmd != sc || lockup_detected(h));
Webb Scales281a7fd2015-01-23 16:43:35 -06005640 cmd_free(h, abort);
Webb Scalesa58e7e52015-04-23 09:34:16 -05005641 return !lockup_detected(h) ? SUCCESS : FAILED;
Stephen M. Cameron75167d22012-05-01 11:42:51 -05005642}
5643
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005644/*
Webb Scales73153fe2015-04-23 09:35:04 -05005645 * For operations with an associated SCSI command, a command block is allocated
5646 * at init, and managed by cmd_tagged_alloc() and cmd_tagged_free() using the
5647 * block request tag as an index into a table of entries. cmd_tagged_free() is
5648 * the complement, although cmd_free() may be called instead.
5649 */
5650static struct CommandList *cmd_tagged_alloc(struct ctlr_info *h,
5651 struct scsi_cmnd *scmd)
5652{
5653 int idx = hpsa_get_cmd_index(scmd);
5654 struct CommandList *c = h->cmd_pool + idx;
5655
5656 if (idx < HPSA_NRESERVED_CMDS || idx >= h->nr_cmds) {
5657 dev_err(&h->pdev->dev, "Bad block tag: %d not in [%d..%d]\n",
5658 idx, HPSA_NRESERVED_CMDS, h->nr_cmds - 1);
5659 /* The index value comes from the block layer, so if it's out of
5660 * bounds, it's probably not our bug.
5661 */
5662 BUG();
5663 }
5664
5665 atomic_inc(&c->refcount);
5666 if (unlikely(!hpsa_is_cmd_idle(c))) {
5667 /*
5668 * We expect that the SCSI layer will hand us a unique tag
5669 * value. Thus, there should never be a collision here between
5670 * two requests...because if the selected command isn't idle
5671 * then someone is going to be very disappointed.
5672 */
5673 dev_err(&h->pdev->dev,
5674 "tag collision (tag=%d) in cmd_tagged_alloc().\n",
5675 idx);
5676 if (c->scsi_cmd != NULL)
5677 scsi_print_command(c->scsi_cmd);
5678 scsi_print_command(scmd);
5679 }
5680
5681 hpsa_cmd_partial_init(h, idx, c);
5682 return c;
5683}
5684
5685static void cmd_tagged_free(struct ctlr_info *h, struct CommandList *c)
5686{
5687 /*
5688 * Release our reference to the block. We don't need to do anything
5689 * else to free it, because it is accessed by index. (There's no point
5690 * in checking the result of the decrement, since we cannot guarantee
5691 * that there isn't a concurrent abort which is also accessing it.)
5692 */
5693 (void)atomic_dec(&c->refcount);
5694}
5695
5696/*
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005697 * For operations that cannot sleep, a command block is allocated at init,
5698 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
5699 * which ones are free or in use. Lock must be held when calling this.
5700 * cmd_free() is the complement.
Robert Elliottbf43caf2015-04-23 09:33:38 -05005701 * This function never gives up and returns NULL. If it hangs,
5702 * another thread must call cmd_free() to free some tags.
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005703 */
Webb Scales281a7fd2015-01-23 16:43:35 -06005704
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005705static struct CommandList *cmd_alloc(struct ctlr_info *h)
5706{
5707 struct CommandList *c;
Stephen Cameron360c73b2015-04-23 09:32:32 -05005708 int refcount, i;
Webb Scales73153fe2015-04-23 09:35:04 -05005709 int offset = 0;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005710
Robert Elliott33811022015-01-23 16:43:41 -06005711 /*
5712 * There is some *extremely* small but non-zero chance that that
Stephen M. Cameron4c413122014-11-14 17:27:29 -06005713 * multiple threads could get in here, and one thread could
5714 * be scanning through the list of bits looking for a free
5715 * one, but the free ones are always behind him, and other
5716 * threads sneak in behind him and eat them before he can
5717 * get to them, so that while there is always a free one, a
5718 * very unlucky thread might be starved anyway, never able to
5719 * beat the other threads. In reality, this happens so
5720 * infrequently as to be indistinguishable from never.
Webb Scales73153fe2015-04-23 09:35:04 -05005721 *
5722 * Note that we start allocating commands before the SCSI host structure
5723 * is initialized. Since the search starts at bit zero, this
5724 * all works, since we have at least one command structure available;
5725 * however, it means that the structures with the low indexes have to be
5726 * reserved for driver-initiated requests, while requests from the block
5727 * layer will use the higher indexes.
Stephen M. Cameron4c413122014-11-14 17:27:29 -06005728 */
5729
Webb Scales281a7fd2015-01-23 16:43:35 -06005730 for (;;) {
Webb Scales73153fe2015-04-23 09:35:04 -05005731 i = find_next_zero_bit(h->cmd_pool_bits,
5732 HPSA_NRESERVED_CMDS,
5733 offset);
5734 if (unlikely(i >= HPSA_NRESERVED_CMDS)) {
Webb Scales281a7fd2015-01-23 16:43:35 -06005735 offset = 0;
5736 continue;
5737 }
5738 c = h->cmd_pool + i;
5739 refcount = atomic_inc_return(&c->refcount);
5740 if (unlikely(refcount > 1)) {
5741 cmd_free(h, c); /* already in use */
Webb Scales73153fe2015-04-23 09:35:04 -05005742 offset = (i + 1) % HPSA_NRESERVED_CMDS;
Webb Scales281a7fd2015-01-23 16:43:35 -06005743 continue;
5744 }
5745 set_bit(i & (BITS_PER_LONG - 1),
5746 h->cmd_pool_bits + (i / BITS_PER_LONG));
5747 break; /* it's ours now. */
5748 }
Stephen Cameron360c73b2015-04-23 09:32:32 -05005749 hpsa_cmd_partial_init(h, i, c);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005750 return c;
5751}
5752
Webb Scales73153fe2015-04-23 09:35:04 -05005753/*
5754 * This is the complementary operation to cmd_alloc(). Note, however, in some
5755 * corner cases it may also be used to free blocks allocated by
5756 * cmd_tagged_alloc() in which case the ref-count decrement does the trick and
5757 * the clear-bit is harmless.
5758 */
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005759static void cmd_free(struct ctlr_info *h, struct CommandList *c)
5760{
Webb Scales281a7fd2015-01-23 16:43:35 -06005761 if (atomic_dec_and_test(&c->refcount)) {
5762 int i;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005763
Webb Scales281a7fd2015-01-23 16:43:35 -06005764 i = c - h->cmd_pool;
5765 clear_bit(i & (BITS_PER_LONG - 1),
5766 h->cmd_pool_bits + (i / BITS_PER_LONG));
5767 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005768}
5769
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005770#ifdef CONFIG_COMPAT
5771
Don Brace42a91642014-11-14 17:26:27 -06005772static int hpsa_ioctl32_passthru(struct scsi_device *dev, int cmd,
5773 void __user *arg)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005774{
5775 IOCTL32_Command_struct __user *arg32 =
5776 (IOCTL32_Command_struct __user *) arg;
5777 IOCTL_Command_struct arg64;
5778 IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
5779 int err;
5780 u32 cp;
5781
Vasiliy Kulikov938abd82011-01-07 10:55:53 -06005782 memset(&arg64, 0, sizeof(arg64));
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005783 err = 0;
5784 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
5785 sizeof(arg64.LUN_info));
5786 err |= copy_from_user(&arg64.Request, &arg32->Request,
5787 sizeof(arg64.Request));
5788 err |= copy_from_user(&arg64.error_info, &arg32->error_info,
5789 sizeof(arg64.error_info));
5790 err |= get_user(arg64.buf_size, &arg32->buf_size);
5791 err |= get_user(cp, &arg32->buf);
5792 arg64.buf = compat_ptr(cp);
5793 err |= copy_to_user(p, &arg64, sizeof(arg64));
5794
5795 if (err)
5796 return -EFAULT;
5797
Don Brace42a91642014-11-14 17:26:27 -06005798 err = hpsa_ioctl(dev, CCISS_PASSTHRU, p);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005799 if (err)
5800 return err;
5801 err |= copy_in_user(&arg32->error_info, &p->error_info,
5802 sizeof(arg32->error_info));
5803 if (err)
5804 return -EFAULT;
5805 return err;
5806}
5807
5808static int hpsa_ioctl32_big_passthru(struct scsi_device *dev,
Don Brace42a91642014-11-14 17:26:27 -06005809 int cmd, void __user *arg)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005810{
5811 BIG_IOCTL32_Command_struct __user *arg32 =
5812 (BIG_IOCTL32_Command_struct __user *) arg;
5813 BIG_IOCTL_Command_struct arg64;
5814 BIG_IOCTL_Command_struct __user *p =
5815 compat_alloc_user_space(sizeof(arg64));
5816 int err;
5817 u32 cp;
5818
Vasiliy Kulikov938abd82011-01-07 10:55:53 -06005819 memset(&arg64, 0, sizeof(arg64));
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005820 err = 0;
5821 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
5822 sizeof(arg64.LUN_info));
5823 err |= copy_from_user(&arg64.Request, &arg32->Request,
5824 sizeof(arg64.Request));
5825 err |= copy_from_user(&arg64.error_info, &arg32->error_info,
5826 sizeof(arg64.error_info));
5827 err |= get_user(arg64.buf_size, &arg32->buf_size);
5828 err |= get_user(arg64.malloc_size, &arg32->malloc_size);
5829 err |= get_user(cp, &arg32->buf);
5830 arg64.buf = compat_ptr(cp);
5831 err |= copy_to_user(p, &arg64, sizeof(arg64));
5832
5833 if (err)
5834 return -EFAULT;
5835
Don Brace42a91642014-11-14 17:26:27 -06005836 err = hpsa_ioctl(dev, CCISS_BIG_PASSTHRU, p);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005837 if (err)
5838 return err;
5839 err |= copy_in_user(&arg32->error_info, &p->error_info,
5840 sizeof(arg32->error_info));
5841 if (err)
5842 return -EFAULT;
5843 return err;
5844}
Stephen M. Cameron71fe75a2010-02-04 08:43:51 -06005845
Don Brace42a91642014-11-14 17:26:27 -06005846static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd, void __user *arg)
Stephen M. Cameron71fe75a2010-02-04 08:43:51 -06005847{
5848 switch (cmd) {
5849 case CCISS_GETPCIINFO:
5850 case CCISS_GETINTINFO:
5851 case CCISS_SETINTINFO:
5852 case CCISS_GETNODENAME:
5853 case CCISS_SETNODENAME:
5854 case CCISS_GETHEARTBEAT:
5855 case CCISS_GETBUSTYPES:
5856 case CCISS_GETFIRMVER:
5857 case CCISS_GETDRIVVER:
5858 case CCISS_REVALIDVOLS:
5859 case CCISS_DEREGDISK:
5860 case CCISS_REGNEWDISK:
5861 case CCISS_REGNEWD:
5862 case CCISS_RESCANDISK:
5863 case CCISS_GETLUNINFO:
5864 return hpsa_ioctl(dev, cmd, arg);
5865
5866 case CCISS_PASSTHRU32:
5867 return hpsa_ioctl32_passthru(dev, cmd, arg);
5868 case CCISS_BIG_PASSTHRU32:
5869 return hpsa_ioctl32_big_passthru(dev, cmd, arg);
5870
5871 default:
5872 return -ENOIOCTLCMD;
5873 }
5874}
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005875#endif
5876
5877static int hpsa_getpciinfo_ioctl(struct ctlr_info *h, void __user *argp)
5878{
5879 struct hpsa_pci_info pciinfo;
5880
5881 if (!argp)
5882 return -EINVAL;
5883 pciinfo.domain = pci_domain_nr(h->pdev->bus);
5884 pciinfo.bus = h->pdev->bus->number;
5885 pciinfo.dev_fn = h->pdev->devfn;
5886 pciinfo.board_id = h->board_id;
5887 if (copy_to_user(argp, &pciinfo, sizeof(pciinfo)))
5888 return -EFAULT;
5889 return 0;
5890}
5891
5892static int hpsa_getdrivver_ioctl(struct ctlr_info *h, void __user *argp)
5893{
5894 DriverVer_type DriverVer;
5895 unsigned char vmaj, vmin, vsubmin;
5896 int rc;
5897
5898 rc = sscanf(HPSA_DRIVER_VERSION, "%hhu.%hhu.%hhu",
5899 &vmaj, &vmin, &vsubmin);
5900 if (rc != 3) {
5901 dev_info(&h->pdev->dev, "driver version string '%s' "
5902 "unrecognized.", HPSA_DRIVER_VERSION);
5903 vmaj = 0;
5904 vmin = 0;
5905 vsubmin = 0;
5906 }
5907 DriverVer = (vmaj << 16) | (vmin << 8) | vsubmin;
5908 if (!argp)
5909 return -EINVAL;
5910 if (copy_to_user(argp, &DriverVer, sizeof(DriverVer_type)))
5911 return -EFAULT;
5912 return 0;
5913}
5914
5915static int hpsa_passthru_ioctl(struct ctlr_info *h, void __user *argp)
5916{
5917 IOCTL_Command_struct iocommand;
5918 struct CommandList *c;
5919 char *buff = NULL;
Stephen M. Cameron50a0dec2014-11-14 17:26:59 -06005920 u64 temp64;
Stephen M. Cameronc1f63c82013-02-20 11:24:52 -06005921 int rc = 0;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005922
5923 if (!argp)
5924 return -EINVAL;
5925 if (!capable(CAP_SYS_RAWIO))
5926 return -EPERM;
5927 if (copy_from_user(&iocommand, argp, sizeof(iocommand)))
5928 return -EFAULT;
5929 if ((iocommand.buf_size < 1) &&
5930 (iocommand.Request.Type.Direction != XFER_NONE)) {
5931 return -EINVAL;
5932 }
5933 if (iocommand.buf_size > 0) {
5934 buff = kmalloc(iocommand.buf_size, GFP_KERNEL);
5935 if (buff == NULL)
Robert Elliott2dd02d72015-04-23 09:33:43 -05005936 return -ENOMEM;
Stephen M. Cameron9233fb12014-05-29 10:52:41 -05005937 if (iocommand.Request.Type.Direction & XFER_WRITE) {
Stephen M. Cameronb03a7772011-01-06 14:47:48 -06005938 /* Copy the data into the buffer we created */
5939 if (copy_from_user(buff, iocommand.buf,
5940 iocommand.buf_size)) {
Stephen M. Cameronc1f63c82013-02-20 11:24:52 -06005941 rc = -EFAULT;
5942 goto out_kfree;
Stephen M. Cameronb03a7772011-01-06 14:47:48 -06005943 }
5944 } else {
5945 memset(buff, 0, iocommand.buf_size);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005946 }
Stephen M. Cameronb03a7772011-01-06 14:47:48 -06005947 }
Stephen Cameron45fcb862015-01-23 16:43:04 -06005948 c = cmd_alloc(h);
Robert Elliottbf43caf2015-04-23 09:33:38 -05005949
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005950 /* Fill in the command type */
5951 c->cmd_type = CMD_IOCTL_PEND;
Webb Scalesa58e7e52015-04-23 09:34:16 -05005952 c->scsi_cmd = SCSI_CMD_BUSY;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005953 /* Fill in Command Header */
5954 c->Header.ReplyQueue = 0; /* unused in simple mode */
5955 if (iocommand.buf_size > 0) { /* buffer to fill */
5956 c->Header.SGList = 1;
Stephen M. Cameron50a0dec2014-11-14 17:26:59 -06005957 c->Header.SGTotal = cpu_to_le16(1);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005958 } else { /* no buffers to fill */
5959 c->Header.SGList = 0;
Stephen M. Cameron50a0dec2014-11-14 17:26:59 -06005960 c->Header.SGTotal = cpu_to_le16(0);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005961 }
5962 memcpy(&c->Header.LUN, &iocommand.LUN_info, sizeof(c->Header.LUN));
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005963
5964 /* Fill in Request block */
5965 memcpy(&c->Request, &iocommand.Request,
5966 sizeof(c->Request));
5967
5968 /* Fill in the scatter gather information */
5969 if (iocommand.buf_size > 0) {
Stephen M. Cameron50a0dec2014-11-14 17:26:59 -06005970 temp64 = pci_map_single(h->pdev, buff,
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005971 iocommand.buf_size, PCI_DMA_BIDIRECTIONAL);
Stephen M. Cameron50a0dec2014-11-14 17:26:59 -06005972 if (dma_mapping_error(&h->pdev->dev, (dma_addr_t) temp64)) {
5973 c->SG[0].Addr = cpu_to_le64(0);
5974 c->SG[0].Len = cpu_to_le32(0);
Stephen M. Cameronbcc48ff2013-02-20 11:24:57 -06005975 rc = -ENOMEM;
5976 goto out;
5977 }
Stephen M. Cameron50a0dec2014-11-14 17:26:59 -06005978 c->SG[0].Addr = cpu_to_le64(temp64);
5979 c->SG[0].Len = cpu_to_le32(iocommand.buf_size);
5980 c->SG[0].Ext = cpu_to_le32(HPSA_SG_LAST); /* not chaining */
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005981 }
Webb Scales25163bd2015-04-23 09:32:00 -05005982 rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, NO_TIMEOUT);
Stephen M. Cameronc2dd32e2011-06-03 09:57:29 -05005983 if (iocommand.buf_size > 0)
5984 hpsa_pci_unmap(h->pdev, c, 1, PCI_DMA_BIDIRECTIONAL);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005985 check_ioctl_unit_attention(h, c);
Webb Scales25163bd2015-04-23 09:32:00 -05005986 if (rc) {
5987 rc = -EIO;
5988 goto out;
5989 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005990
5991 /* Copy the error information out */
5992 memcpy(&iocommand.error_info, c->err_info,
5993 sizeof(iocommand.error_info));
5994 if (copy_to_user(argp, &iocommand, sizeof(iocommand))) {
Stephen M. Cameronc1f63c82013-02-20 11:24:52 -06005995 rc = -EFAULT;
5996 goto out;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08005997 }
Stephen M. Cameron9233fb12014-05-29 10:52:41 -05005998 if ((iocommand.Request.Type.Direction & XFER_READ) &&
Stephen M. Cameronb03a7772011-01-06 14:47:48 -06005999 iocommand.buf_size > 0) {
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006000 /* Copy the data out of the buffer we created */
6001 if (copy_to_user(iocommand.buf, buff, iocommand.buf_size)) {
Stephen M. Cameronc1f63c82013-02-20 11:24:52 -06006002 rc = -EFAULT;
6003 goto out;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006004 }
6005 }
Stephen M. Cameronc1f63c82013-02-20 11:24:52 -06006006out:
Stephen Cameron45fcb862015-01-23 16:43:04 -06006007 cmd_free(h, c);
Stephen M. Cameronc1f63c82013-02-20 11:24:52 -06006008out_kfree:
6009 kfree(buff);
6010 return rc;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006011}
6012
6013static int hpsa_big_passthru_ioctl(struct ctlr_info *h, void __user *argp)
6014{
6015 BIG_IOCTL_Command_struct *ioc;
6016 struct CommandList *c;
6017 unsigned char **buff = NULL;
6018 int *buff_size = NULL;
Stephen M. Cameron50a0dec2014-11-14 17:26:59 -06006019 u64 temp64;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006020 BYTE sg_used = 0;
6021 int status = 0;
Stephen M. Cameron01a02ff2010-02-04 08:41:33 -06006022 u32 left;
6023 u32 sz;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006024 BYTE __user *data_ptr;
6025
6026 if (!argp)
6027 return -EINVAL;
6028 if (!capable(CAP_SYS_RAWIO))
6029 return -EPERM;
6030 ioc = (BIG_IOCTL_Command_struct *)
6031 kmalloc(sizeof(*ioc), GFP_KERNEL);
6032 if (!ioc) {
6033 status = -ENOMEM;
6034 goto cleanup1;
6035 }
6036 if (copy_from_user(ioc, argp, sizeof(*ioc))) {
6037 status = -EFAULT;
6038 goto cleanup1;
6039 }
6040 if ((ioc->buf_size < 1) &&
6041 (ioc->Request.Type.Direction != XFER_NONE)) {
6042 status = -EINVAL;
6043 goto cleanup1;
6044 }
6045 /* Check kmalloc limits using all SGs */
6046 if (ioc->malloc_size > MAX_KMALLOC_SIZE) {
6047 status = -EINVAL;
6048 goto cleanup1;
6049 }
Stephen M. Camerond66ae082012-01-19 14:00:48 -06006050 if (ioc->buf_size > ioc->malloc_size * SG_ENTRIES_IN_CMD) {
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006051 status = -EINVAL;
6052 goto cleanup1;
6053 }
Stephen M. Camerond66ae082012-01-19 14:00:48 -06006054 buff = kzalloc(SG_ENTRIES_IN_CMD * sizeof(char *), GFP_KERNEL);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006055 if (!buff) {
6056 status = -ENOMEM;
6057 goto cleanup1;
6058 }
Stephen M. Camerond66ae082012-01-19 14:00:48 -06006059 buff_size = kmalloc(SG_ENTRIES_IN_CMD * sizeof(int), GFP_KERNEL);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006060 if (!buff_size) {
6061 status = -ENOMEM;
6062 goto cleanup1;
6063 }
6064 left = ioc->buf_size;
6065 data_ptr = ioc->buf;
6066 while (left) {
6067 sz = (left > ioc->malloc_size) ? ioc->malloc_size : left;
6068 buff_size[sg_used] = sz;
6069 buff[sg_used] = kmalloc(sz, GFP_KERNEL);
6070 if (buff[sg_used] == NULL) {
6071 status = -ENOMEM;
6072 goto cleanup1;
6073 }
Stephen M. Cameron9233fb12014-05-29 10:52:41 -05006074 if (ioc->Request.Type.Direction & XFER_WRITE) {
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006075 if (copy_from_user(buff[sg_used], data_ptr, sz)) {
Stephen M. Cameron0758f4f2014-07-03 10:18:03 -05006076 status = -EFAULT;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006077 goto cleanup1;
6078 }
6079 } else
6080 memset(buff[sg_used], 0, sz);
6081 left -= sz;
6082 data_ptr += sz;
6083 sg_used++;
6084 }
Stephen Cameron45fcb862015-01-23 16:43:04 -06006085 c = cmd_alloc(h);
Robert Elliottbf43caf2015-04-23 09:33:38 -05006086
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006087 c->cmd_type = CMD_IOCTL_PEND;
Webb Scalesa58e7e52015-04-23 09:34:16 -05006088 c->scsi_cmd = SCSI_CMD_BUSY;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006089 c->Header.ReplyQueue = 0;
Stephen M. Cameron50a0dec2014-11-14 17:26:59 -06006090 c->Header.SGList = (u8) sg_used;
6091 c->Header.SGTotal = cpu_to_le16(sg_used);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006092 memcpy(&c->Header.LUN, &ioc->LUN_info, sizeof(c->Header.LUN));
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006093 memcpy(&c->Request, &ioc->Request, sizeof(c->Request));
6094 if (ioc->buf_size > 0) {
6095 int i;
6096 for (i = 0; i < sg_used; i++) {
Stephen M. Cameron50a0dec2014-11-14 17:26:59 -06006097 temp64 = pci_map_single(h->pdev, buff[i],
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006098 buff_size[i], PCI_DMA_BIDIRECTIONAL);
Stephen M. Cameron50a0dec2014-11-14 17:26:59 -06006099 if (dma_mapping_error(&h->pdev->dev,
6100 (dma_addr_t) temp64)) {
6101 c->SG[i].Addr = cpu_to_le64(0);
6102 c->SG[i].Len = cpu_to_le32(0);
Stephen M. Cameronbcc48ff2013-02-20 11:24:57 -06006103 hpsa_pci_unmap(h->pdev, c, i,
6104 PCI_DMA_BIDIRECTIONAL);
6105 status = -ENOMEM;
Stephen M. Camerone2d4a1f2013-09-23 13:33:51 -05006106 goto cleanup0;
Stephen M. Cameronbcc48ff2013-02-20 11:24:57 -06006107 }
Stephen M. Cameron50a0dec2014-11-14 17:26:59 -06006108 c->SG[i].Addr = cpu_to_le64(temp64);
6109 c->SG[i].Len = cpu_to_le32(buff_size[i]);
6110 c->SG[i].Ext = cpu_to_le32(0);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006111 }
Stephen M. Cameron50a0dec2014-11-14 17:26:59 -06006112 c->SG[--i].Ext = cpu_to_le32(HPSA_SG_LAST);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006113 }
Webb Scales25163bd2015-04-23 09:32:00 -05006114 status = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, NO_TIMEOUT);
Stephen M. Cameronb03a7772011-01-06 14:47:48 -06006115 if (sg_used)
6116 hpsa_pci_unmap(h->pdev, c, sg_used, PCI_DMA_BIDIRECTIONAL);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006117 check_ioctl_unit_attention(h, c);
Webb Scales25163bd2015-04-23 09:32:00 -05006118 if (status) {
6119 status = -EIO;
6120 goto cleanup0;
6121 }
6122
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006123 /* Copy the error information out */
6124 memcpy(&ioc->error_info, c->err_info, sizeof(ioc->error_info));
6125 if (copy_to_user(argp, ioc, sizeof(*ioc))) {
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006126 status = -EFAULT;
Stephen M. Camerone2d4a1f2013-09-23 13:33:51 -05006127 goto cleanup0;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006128 }
Stephen M. Cameron9233fb12014-05-29 10:52:41 -05006129 if ((ioc->Request.Type.Direction & XFER_READ) && ioc->buf_size > 0) {
Don Brace2b08b3e2015-01-23 16:41:09 -06006130 int i;
6131
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006132 /* Copy the data out of the buffer we created */
6133 BYTE __user *ptr = ioc->buf;
6134 for (i = 0; i < sg_used; i++) {
6135 if (copy_to_user(ptr, buff[i], buff_size[i])) {
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006136 status = -EFAULT;
Stephen M. Camerone2d4a1f2013-09-23 13:33:51 -05006137 goto cleanup0;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006138 }
6139 ptr += buff_size[i];
6140 }
6141 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006142 status = 0;
Stephen M. Camerone2d4a1f2013-09-23 13:33:51 -05006143cleanup0:
Stephen Cameron45fcb862015-01-23 16:43:04 -06006144 cmd_free(h, c);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006145cleanup1:
6146 if (buff) {
Don Brace2b08b3e2015-01-23 16:41:09 -06006147 int i;
6148
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006149 for (i = 0; i < sg_used; i++)
6150 kfree(buff[i]);
6151 kfree(buff);
6152 }
6153 kfree(buff_size);
6154 kfree(ioc);
6155 return status;
6156}
6157
6158static void check_ioctl_unit_attention(struct ctlr_info *h,
6159 struct CommandList *c)
6160{
6161 if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
6162 c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION)
6163 (void) check_for_unit_attention(h, c);
6164}
Stephen M. Cameron0390f0c2013-09-23 13:34:12 -05006165
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006166/*
6167 * ioctl
6168 */
Don Brace42a91642014-11-14 17:26:27 -06006169static int hpsa_ioctl(struct scsi_device *dev, int cmd, void __user *arg)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006170{
6171 struct ctlr_info *h;
6172 void __user *argp = (void __user *)arg;
Stephen M. Cameron0390f0c2013-09-23 13:34:12 -05006173 int rc;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006174
6175 h = sdev_to_hba(dev);
6176
6177 switch (cmd) {
6178 case CCISS_DEREGDISK:
6179 case CCISS_REGNEWDISK:
6180 case CCISS_REGNEWD:
Stephen M. Camerona08a8472010-02-04 08:43:16 -06006181 hpsa_scan_start(h->scsi_host);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006182 return 0;
6183 case CCISS_GETPCIINFO:
6184 return hpsa_getpciinfo_ioctl(h, argp);
6185 case CCISS_GETDRIVVER:
6186 return hpsa_getdrivver_ioctl(h, argp);
6187 case CCISS_PASSTHRU:
Don Brace34f0c622015-01-23 16:43:46 -06006188 if (atomic_dec_if_positive(&h->passthru_cmds_avail) < 0)
Stephen M. Cameron0390f0c2013-09-23 13:34:12 -05006189 return -EAGAIN;
6190 rc = hpsa_passthru_ioctl(h, argp);
Don Brace34f0c622015-01-23 16:43:46 -06006191 atomic_inc(&h->passthru_cmds_avail);
Stephen M. Cameron0390f0c2013-09-23 13:34:12 -05006192 return rc;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006193 case CCISS_BIG_PASSTHRU:
Don Brace34f0c622015-01-23 16:43:46 -06006194 if (atomic_dec_if_positive(&h->passthru_cmds_avail) < 0)
Stephen M. Cameron0390f0c2013-09-23 13:34:12 -05006195 return -EAGAIN;
6196 rc = hpsa_big_passthru_ioctl(h, argp);
Don Brace34f0c622015-01-23 16:43:46 -06006197 atomic_inc(&h->passthru_cmds_avail);
Stephen M. Cameron0390f0c2013-09-23 13:34:12 -05006198 return rc;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006199 default:
6200 return -ENOTTY;
6201 }
6202}
6203
Robert Elliottbf43caf2015-04-23 09:33:38 -05006204static void hpsa_send_host_reset(struct ctlr_info *h, unsigned char *scsi3addr,
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08006205 u8 reset_type)
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05006206{
6207 struct CommandList *c;
6208
6209 c = cmd_alloc(h);
Robert Elliottbf43caf2015-04-23 09:33:38 -05006210
Stephen M. Camerona2dac132013-02-20 11:24:41 -06006211 /* fill_cmd can't fail here, no data buffer to map */
6212 (void) fill_cmd(c, HPSA_DEVICE_RESET_MSG, h, NULL, 0, 0,
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05006213 RAID_CTLR_LUNID, TYPE_MSG);
6214 c->Request.CDB[1] = reset_type; /* fill_cmd defaults to target reset */
6215 c->waiting = NULL;
6216 enqueue_cmd_and_start_io(h, c);
6217 /* Don't wait for completion, the reset won't complete. Don't free
6218 * the command either. This is the last command we will send before
6219 * re-initializing everything, so it doesn't matter and won't leak.
6220 */
Robert Elliottbf43caf2015-04-23 09:33:38 -05006221 return;
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05006222}
6223
Stephen M. Camerona2dac132013-02-20 11:24:41 -06006224static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h,
Stephen M. Cameronb7bb24e2014-02-18 13:57:11 -06006225 void *buff, size_t size, u16 page_code, unsigned char *scsi3addr,
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006226 int cmd_type)
6227{
6228 int pci_dir = XFER_NONE;
Stephen Cameron9b5c48c2015-04-23 09:32:06 -05006229 u64 tag; /* for commands to be aborted */
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006230
6231 c->cmd_type = CMD_IOCTL_PEND;
Webb Scalesa58e7e52015-04-23 09:34:16 -05006232 c->scsi_cmd = SCSI_CMD_BUSY;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006233 c->Header.ReplyQueue = 0;
6234 if (buff != NULL && size > 0) {
6235 c->Header.SGList = 1;
Stephen M. Cameron50a0dec2014-11-14 17:26:59 -06006236 c->Header.SGTotal = cpu_to_le16(1);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006237 } else {
6238 c->Header.SGList = 0;
Stephen M. Cameron50a0dec2014-11-14 17:26:59 -06006239 c->Header.SGTotal = cpu_to_le16(0);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006240 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006241 memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8);
6242
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006243 if (cmd_type == TYPE_CMD) {
6244 switch (cmd) {
6245 case HPSA_INQUIRY:
6246 /* are we trying to read a vital product page */
Stephen M. Cameronb7bb24e2014-02-18 13:57:11 -06006247 if (page_code & VPD_PAGE) {
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006248 c->Request.CDB[1] = 0x01;
Stephen M. Cameronb7bb24e2014-02-18 13:57:11 -06006249 c->Request.CDB[2] = (page_code & 0xff);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006250 }
6251 c->Request.CDBLen = 6;
Stephen M. Camerona505b862014-11-14 17:27:04 -06006252 c->Request.type_attr_dir =
6253 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006254 c->Request.Timeout = 0;
6255 c->Request.CDB[0] = HPSA_INQUIRY;
6256 c->Request.CDB[4] = size & 0xFF;
6257 break;
6258 case HPSA_REPORT_LOG:
6259 case HPSA_REPORT_PHYS:
6260 /* Talking to controller so It's a physical command
6261 mode = 00 target = 0. Nothing to write.
6262 */
6263 c->Request.CDBLen = 12;
Stephen M. Camerona505b862014-11-14 17:27:04 -06006264 c->Request.type_attr_dir =
6265 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006266 c->Request.Timeout = 0;
6267 c->Request.CDB[0] = cmd;
6268 c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */
6269 c->Request.CDB[7] = (size >> 16) & 0xFF;
6270 c->Request.CDB[8] = (size >> 8) & 0xFF;
6271 c->Request.CDB[9] = size & 0xFF;
6272 break;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006273 case HPSA_CACHE_FLUSH:
6274 c->Request.CDBLen = 12;
Stephen M. Camerona505b862014-11-14 17:27:04 -06006275 c->Request.type_attr_dir =
6276 TYPE_ATTR_DIR(cmd_type,
6277 ATTR_SIMPLE, XFER_WRITE);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006278 c->Request.Timeout = 0;
6279 c->Request.CDB[0] = BMIC_WRITE;
6280 c->Request.CDB[6] = BMIC_CACHE_FLUSH;
Stephen M. Cameronbb158ea2011-10-26 16:21:17 -05006281 c->Request.CDB[7] = (size >> 8) & 0xFF;
6282 c->Request.CDB[8] = size & 0xFF;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006283 break;
6284 case TEST_UNIT_READY:
6285 c->Request.CDBLen = 6;
Stephen M. Camerona505b862014-11-14 17:27:04 -06006286 c->Request.type_attr_dir =
6287 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_NONE);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006288 c->Request.Timeout = 0;
6289 break;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06006290 case HPSA_GET_RAID_MAP:
6291 c->Request.CDBLen = 12;
Stephen M. Camerona505b862014-11-14 17:27:04 -06006292 c->Request.type_attr_dir =
6293 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06006294 c->Request.Timeout = 0;
6295 c->Request.CDB[0] = HPSA_CISS_READ;
6296 c->Request.CDB[1] = cmd;
6297 c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */
6298 c->Request.CDB[7] = (size >> 16) & 0xFF;
6299 c->Request.CDB[8] = (size >> 8) & 0xFF;
6300 c->Request.CDB[9] = size & 0xFF;
6301 break;
Stephen M. Cameron316b2212014-02-21 16:25:15 -06006302 case BMIC_SENSE_CONTROLLER_PARAMETERS:
6303 c->Request.CDBLen = 10;
Stephen M. Camerona505b862014-11-14 17:27:04 -06006304 c->Request.type_attr_dir =
6305 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
Stephen M. Cameron316b2212014-02-21 16:25:15 -06006306 c->Request.Timeout = 0;
6307 c->Request.CDB[0] = BMIC_READ;
6308 c->Request.CDB[6] = BMIC_SENSE_CONTROLLER_PARAMETERS;
6309 c->Request.CDB[7] = (size >> 16) & 0xFF;
6310 c->Request.CDB[8] = (size >> 8) & 0xFF;
6311 break;
Don Brace03383732015-01-23 16:43:30 -06006312 case BMIC_IDENTIFY_PHYSICAL_DEVICE:
6313 c->Request.CDBLen = 10;
6314 c->Request.type_attr_dir =
6315 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6316 c->Request.Timeout = 0;
6317 c->Request.CDB[0] = BMIC_READ;
6318 c->Request.CDB[6] = BMIC_IDENTIFY_PHYSICAL_DEVICE;
6319 c->Request.CDB[7] = (size >> 16) & 0xFF;
6320 c->Request.CDB[8] = (size >> 8) & 0XFF;
6321 break;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006322 default:
6323 dev_warn(&h->pdev->dev, "unknown command 0x%c\n", cmd);
6324 BUG();
Stephen M. Camerona2dac132013-02-20 11:24:41 -06006325 return -1;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006326 }
6327 } else if (cmd_type == TYPE_MSG) {
6328 switch (cmd) {
6329
6330 case HPSA_DEVICE_RESET_MSG:
6331 c->Request.CDBLen = 16;
Stephen M. Camerona505b862014-11-14 17:27:04 -06006332 c->Request.type_attr_dir =
6333 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_NONE);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006334 c->Request.Timeout = 0; /* Don't time out */
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05006335 memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB));
6336 c->Request.CDB[0] = cmd;
Stephen M. Cameron21e89af2012-07-26 11:34:10 -05006337 c->Request.CDB[1] = HPSA_RESET_TYPE_LUN;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006338 /* If bytes 4-7 are zero, it means reset the */
6339 /* LunID device */
6340 c->Request.CDB[4] = 0x00;
6341 c->Request.CDB[5] = 0x00;
6342 c->Request.CDB[6] = 0x00;
6343 c->Request.CDB[7] = 0x00;
Stephen M. Cameron75167d22012-05-01 11:42:51 -05006344 break;
6345 case HPSA_ABORT_MSG:
Stephen Cameron9b5c48c2015-04-23 09:32:06 -05006346 memcpy(&tag, buff, sizeof(tag));
Don Brace2b08b3e2015-01-23 16:41:09 -06006347 dev_dbg(&h->pdev->dev,
Stephen Cameron9b5c48c2015-04-23 09:32:06 -05006348 "Abort Tag:0x%016llx using rqst Tag:0x%016llx",
6349 tag, c->Header.tag);
Stephen M. Cameron75167d22012-05-01 11:42:51 -05006350 c->Request.CDBLen = 16;
Stephen M. Camerona505b862014-11-14 17:27:04 -06006351 c->Request.type_attr_dir =
6352 TYPE_ATTR_DIR(cmd_type,
6353 ATTR_SIMPLE, XFER_WRITE);
Stephen M. Cameron75167d22012-05-01 11:42:51 -05006354 c->Request.Timeout = 0; /* Don't time out */
6355 c->Request.CDB[0] = HPSA_TASK_MANAGEMENT;
6356 c->Request.CDB[1] = HPSA_TMF_ABORT_TASK;
6357 c->Request.CDB[2] = 0x00; /* reserved */
6358 c->Request.CDB[3] = 0x00; /* reserved */
6359 /* Tag to abort goes in CDB[4]-CDB[11] */
Stephen Cameron9b5c48c2015-04-23 09:32:06 -05006360 memcpy(&c->Request.CDB[4], &tag, sizeof(tag));
Stephen M. Cameron75167d22012-05-01 11:42:51 -05006361 c->Request.CDB[12] = 0x00; /* reserved */
6362 c->Request.CDB[13] = 0x00; /* reserved */
6363 c->Request.CDB[14] = 0x00; /* reserved */
6364 c->Request.CDB[15] = 0x00; /* reserved */
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006365 break;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006366 default:
6367 dev_warn(&h->pdev->dev, "unknown message type %d\n",
6368 cmd);
6369 BUG();
6370 }
6371 } else {
6372 dev_warn(&h->pdev->dev, "unknown command type %d\n", cmd_type);
6373 BUG();
6374 }
6375
Stephen M. Camerona505b862014-11-14 17:27:04 -06006376 switch (GET_DIR(c->Request.type_attr_dir)) {
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006377 case XFER_READ:
6378 pci_dir = PCI_DMA_FROMDEVICE;
6379 break;
6380 case XFER_WRITE:
6381 pci_dir = PCI_DMA_TODEVICE;
6382 break;
6383 case XFER_NONE:
6384 pci_dir = PCI_DMA_NONE;
6385 break;
6386 default:
6387 pci_dir = PCI_DMA_BIDIRECTIONAL;
6388 }
Stephen M. Camerona2dac132013-02-20 11:24:41 -06006389 if (hpsa_map_one(h->pdev, c, buff, size, pci_dir))
6390 return -1;
6391 return 0;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006392}
6393
6394/*
6395 * Map (physical) PCI mem into (virtual) kernel space
6396 */
6397static void __iomem *remap_pci_mem(ulong base, ulong size)
6398{
6399 ulong page_base = ((ulong) base) & PAGE_MASK;
6400 ulong page_offs = ((ulong) base) - page_base;
Stephen M. Cameron088ba342012-07-26 11:34:23 -05006401 void __iomem *page_remapped = ioremap_nocache(page_base,
6402 page_offs + size);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006403
6404 return page_remapped ? (page_remapped + page_offs) : NULL;
6405}
6406
Matt Gates254f7962012-05-01 11:43:06 -05006407static inline unsigned long get_next_completion(struct ctlr_info *h, u8 q)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006408{
Matt Gates254f7962012-05-01 11:43:06 -05006409 return h->access.command_completed(h, q);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006410}
6411
Stephen M. Cameron900c5442010-02-04 08:42:35 -06006412static inline bool interrupt_pending(struct ctlr_info *h)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006413{
6414 return h->access.intr_pending(h);
6415}
6416
6417static inline long interrupt_not_for_us(struct ctlr_info *h)
6418{
Stephen M. Cameron10f66012010-06-16 13:51:50 -05006419 return (h->access.intr_pending(h) == 0) ||
6420 (h->interrupts_enabled == 0);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006421}
6422
Stephen M. Cameron01a02ff2010-02-04 08:41:33 -06006423static inline int bad_tag(struct ctlr_info *h, u32 tag_index,
6424 u32 raw_tag)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006425{
6426 if (unlikely(tag_index >= h->nr_cmds)) {
6427 dev_warn(&h->pdev->dev, "bad tag 0x%08x ignored.\n", raw_tag);
6428 return 1;
6429 }
6430 return 0;
6431}
6432
Stephen M. Cameron5a3d16f2012-05-01 11:42:46 -05006433static inline void finish_cmd(struct CommandList *c)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006434{
Stephen M. Camerone85c5972012-05-01 11:43:42 -05006435 dial_up_lockup_detection_on_fw_flash_complete(c->h, c);
Scott Teelc3497752014-02-18 13:56:34 -06006436 if (likely(c->cmd_type == CMD_IOACCEL1 || c->cmd_type == CMD_SCSI
6437 || c->cmd_type == CMD_IOACCEL2))
Stephen M. Cameron1fb011f2011-05-03 14:59:00 -05006438 complete_scsi_command(c);
Stephen Cameron8be986c2015-04-23 09:34:06 -05006439 else if (c->cmd_type == CMD_IOCTL_PEND || c->cmd_type == IOACCEL2_TMF)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006440 complete(c->waiting);
Stephen M. Camerona104c992010-02-04 08:42:24 -06006441}
6442
Stephen M. Camerona9a3a272011-02-15 15:32:53 -06006443
6444static inline u32 hpsa_tag_discard_error_bits(struct ctlr_info *h, u32 tag)
Stephen M. Camerona104c992010-02-04 08:42:24 -06006445{
Stephen M. Camerona9a3a272011-02-15 15:32:53 -06006446#define HPSA_PERF_ERROR_BITS ((1 << DIRECT_LOOKUP_SHIFT) - 1)
6447#define HPSA_SIMPLE_ERROR_BITS 0x03
Stephen M. Cameron960a30e2011-02-15 15:33:03 -06006448 if (unlikely(!(h->transMethod & CFGTBL_Trans_Performant)))
Stephen M. Camerona9a3a272011-02-15 15:32:53 -06006449 return tag & ~HPSA_SIMPLE_ERROR_BITS;
6450 return tag & ~HPSA_PERF_ERROR_BITS;
Stephen M. Camerona104c992010-02-04 08:42:24 -06006451}
6452
Don Brace303932f2010-02-04 08:42:40 -06006453/* process completion of an indexed ("direct lookup") command */
Stephen M. Cameron1d94f942012-05-01 11:43:01 -05006454static inline void process_indexed_cmd(struct ctlr_info *h,
Don Brace303932f2010-02-04 08:42:40 -06006455 u32 raw_tag)
6456{
6457 u32 tag_index;
6458 struct CommandList *c;
6459
Don Bracef2405db2015-01-23 16:43:09 -06006460 tag_index = raw_tag >> DIRECT_LOOKUP_SHIFT;
Stephen M. Cameron1d94f942012-05-01 11:43:01 -05006461 if (!bad_tag(h, tag_index, raw_tag)) {
6462 c = h->cmd_pool + tag_index;
6463 finish_cmd(c);
6464 }
Don Brace303932f2010-02-04 08:42:40 -06006465}
6466
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05006467/* Some controllers, like p400, will give us one interrupt
6468 * after a soft reset, even if we turned interrupts off.
6469 * Only need to check for this in the hpsa_xxx_discard_completions
6470 * functions.
6471 */
6472static int ignore_bogus_interrupt(struct ctlr_info *h)
6473{
6474 if (likely(!reset_devices))
6475 return 0;
6476
6477 if (likely(h->interrupts_enabled))
6478 return 0;
6479
6480 dev_info(&h->pdev->dev, "Received interrupt while interrupts disabled "
6481 "(known firmware bug.) Ignoring.\n");
6482
6483 return 1;
6484}
6485
Matt Gates254f7962012-05-01 11:43:06 -05006486/*
6487 * Convert &h->q[x] (passed to interrupt handlers) back to h.
6488 * Relies on (h-q[x] == x) being true for x such that
6489 * 0 <= x < MAX_REPLY_QUEUES.
6490 */
6491static struct ctlr_info *queue_to_hba(u8 *queue)
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05006492{
Matt Gates254f7962012-05-01 11:43:06 -05006493 return container_of((queue - *queue), struct ctlr_info, q[0]);
6494}
6495
6496static irqreturn_t hpsa_intx_discard_completions(int irq, void *queue)
6497{
6498 struct ctlr_info *h = queue_to_hba(queue);
6499 u8 q = *(u8 *) queue;
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05006500 u32 raw_tag;
6501
6502 if (ignore_bogus_interrupt(h))
6503 return IRQ_NONE;
6504
6505 if (interrupt_not_for_us(h))
6506 return IRQ_NONE;
Stephen M. Camerona0c12412011-10-26 16:22:04 -05006507 h->last_intr_timestamp = get_jiffies_64();
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05006508 while (interrupt_pending(h)) {
Matt Gates254f7962012-05-01 11:43:06 -05006509 raw_tag = get_next_completion(h, q);
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05006510 while (raw_tag != FIFO_EMPTY)
Matt Gates254f7962012-05-01 11:43:06 -05006511 raw_tag = next_command(h, q);
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05006512 }
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05006513 return IRQ_HANDLED;
6514}
6515
Matt Gates254f7962012-05-01 11:43:06 -05006516static irqreturn_t hpsa_msix_discard_completions(int irq, void *queue)
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05006517{
Matt Gates254f7962012-05-01 11:43:06 -05006518 struct ctlr_info *h = queue_to_hba(queue);
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05006519 u32 raw_tag;
Matt Gates254f7962012-05-01 11:43:06 -05006520 u8 q = *(u8 *) queue;
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05006521
6522 if (ignore_bogus_interrupt(h))
6523 return IRQ_NONE;
6524
Stephen M. Camerona0c12412011-10-26 16:22:04 -05006525 h->last_intr_timestamp = get_jiffies_64();
Matt Gates254f7962012-05-01 11:43:06 -05006526 raw_tag = get_next_completion(h, q);
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05006527 while (raw_tag != FIFO_EMPTY)
Matt Gates254f7962012-05-01 11:43:06 -05006528 raw_tag = next_command(h, q);
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05006529 return IRQ_HANDLED;
6530}
6531
Matt Gates254f7962012-05-01 11:43:06 -05006532static irqreturn_t do_hpsa_intr_intx(int irq, void *queue)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006533{
Matt Gates254f7962012-05-01 11:43:06 -05006534 struct ctlr_info *h = queue_to_hba((u8 *) queue);
Don Brace303932f2010-02-04 08:42:40 -06006535 u32 raw_tag;
Matt Gates254f7962012-05-01 11:43:06 -05006536 u8 q = *(u8 *) queue;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006537
6538 if (interrupt_not_for_us(h))
6539 return IRQ_NONE;
Stephen M. Camerona0c12412011-10-26 16:22:04 -05006540 h->last_intr_timestamp = get_jiffies_64();
Stephen M. Cameron10f66012010-06-16 13:51:50 -05006541 while (interrupt_pending(h)) {
Matt Gates254f7962012-05-01 11:43:06 -05006542 raw_tag = get_next_completion(h, q);
Stephen M. Cameron10f66012010-06-16 13:51:50 -05006543 while (raw_tag != FIFO_EMPTY) {
Don Bracef2405db2015-01-23 16:43:09 -06006544 process_indexed_cmd(h, raw_tag);
Matt Gates254f7962012-05-01 11:43:06 -05006545 raw_tag = next_command(h, q);
Stephen M. Cameron10f66012010-06-16 13:51:50 -05006546 }
6547 }
Stephen M. Cameron10f66012010-06-16 13:51:50 -05006548 return IRQ_HANDLED;
6549}
6550
Matt Gates254f7962012-05-01 11:43:06 -05006551static irqreturn_t do_hpsa_intr_msi(int irq, void *queue)
Stephen M. Cameron10f66012010-06-16 13:51:50 -05006552{
Matt Gates254f7962012-05-01 11:43:06 -05006553 struct ctlr_info *h = queue_to_hba(queue);
Stephen M. Cameron10f66012010-06-16 13:51:50 -05006554 u32 raw_tag;
Matt Gates254f7962012-05-01 11:43:06 -05006555 u8 q = *(u8 *) queue;
Stephen M. Cameron10f66012010-06-16 13:51:50 -05006556
Stephen M. Camerona0c12412011-10-26 16:22:04 -05006557 h->last_intr_timestamp = get_jiffies_64();
Matt Gates254f7962012-05-01 11:43:06 -05006558 raw_tag = get_next_completion(h, q);
Don Brace303932f2010-02-04 08:42:40 -06006559 while (raw_tag != FIFO_EMPTY) {
Don Bracef2405db2015-01-23 16:43:09 -06006560 process_indexed_cmd(h, raw_tag);
Matt Gates254f7962012-05-01 11:43:06 -05006561 raw_tag = next_command(h, q);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006562 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006563 return IRQ_HANDLED;
6564}
6565
Stephen M. Camerona9a3a272011-02-15 15:32:53 -06006566/* Send a message CDB to the firmware. Careful, this only works
6567 * in simple mode, not performant mode due to the tag lookup.
6568 * We only ever use this immediately after a controller reset.
6569 */
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08006570static int hpsa_message(struct pci_dev *pdev, unsigned char opcode,
6571 unsigned char type)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006572{
6573 struct Command {
6574 struct CommandListHeader CommandHeader;
6575 struct RequestBlock Request;
6576 struct ErrDescriptor ErrorDescriptor;
6577 };
6578 struct Command *cmd;
6579 static const size_t cmd_sz = sizeof(*cmd) +
6580 sizeof(cmd->ErrorDescriptor);
6581 dma_addr_t paddr64;
Don Brace2b08b3e2015-01-23 16:41:09 -06006582 __le32 paddr32;
6583 u32 tag;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006584 void __iomem *vaddr;
6585 int i, err;
6586
6587 vaddr = pci_ioremap_bar(pdev, 0);
6588 if (vaddr == NULL)
6589 return -ENOMEM;
6590
6591 /* The Inbound Post Queue only accepts 32-bit physical addresses for the
6592 * CCISS commands, so they must be allocated from the lower 4GiB of
6593 * memory.
6594 */
6595 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
6596 if (err) {
6597 iounmap(vaddr);
Robert Elliott1eaec8f2015-01-23 16:42:37 -06006598 return err;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006599 }
6600
6601 cmd = pci_alloc_consistent(pdev, cmd_sz, &paddr64);
6602 if (cmd == NULL) {
6603 iounmap(vaddr);
6604 return -ENOMEM;
6605 }
6606
6607 /* This must fit, because of the 32-bit consistent DMA mask. Also,
6608 * although there's no guarantee, we assume that the address is at
6609 * least 4-byte aligned (most likely, it's page-aligned).
6610 */
Don Brace2b08b3e2015-01-23 16:41:09 -06006611 paddr32 = cpu_to_le32(paddr64);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006612
6613 cmd->CommandHeader.ReplyQueue = 0;
6614 cmd->CommandHeader.SGList = 0;
Stephen M. Cameron50a0dec2014-11-14 17:26:59 -06006615 cmd->CommandHeader.SGTotal = cpu_to_le16(0);
Don Brace2b08b3e2015-01-23 16:41:09 -06006616 cmd->CommandHeader.tag = cpu_to_le64(paddr64);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006617 memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8);
6618
6619 cmd->Request.CDBLen = 16;
Stephen M. Camerona505b862014-11-14 17:27:04 -06006620 cmd->Request.type_attr_dir =
6621 TYPE_ATTR_DIR(TYPE_MSG, ATTR_HEADOFQUEUE, XFER_NONE);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006622 cmd->Request.Timeout = 0; /* Don't time out */
6623 cmd->Request.CDB[0] = opcode;
6624 cmd->Request.CDB[1] = type;
6625 memset(&cmd->Request.CDB[2], 0, 14); /* rest of the CDB is reserved */
Stephen M. Cameron50a0dec2014-11-14 17:26:59 -06006626 cmd->ErrorDescriptor.Addr =
Don Brace2b08b3e2015-01-23 16:41:09 -06006627 cpu_to_le64((le32_to_cpu(paddr32) + sizeof(*cmd)));
Stephen M. Cameron50a0dec2014-11-14 17:26:59 -06006628 cmd->ErrorDescriptor.Len = cpu_to_le32(sizeof(struct ErrorInfo));
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006629
Don Brace2b08b3e2015-01-23 16:41:09 -06006630 writel(le32_to_cpu(paddr32), vaddr + SA5_REQUEST_PORT_OFFSET);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006631
6632 for (i = 0; i < HPSA_MSG_SEND_RETRY_LIMIT; i++) {
6633 tag = readl(vaddr + SA5_REPLY_PORT_OFFSET);
Don Brace2b08b3e2015-01-23 16:41:09 -06006634 if ((tag & ~HPSA_SIMPLE_ERROR_BITS) == paddr64)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006635 break;
6636 msleep(HPSA_MSG_SEND_RETRY_INTERVAL_MSECS);
6637 }
6638
6639 iounmap(vaddr);
6640
6641 /* we leak the DMA buffer here ... no choice since the controller could
6642 * still complete the command.
6643 */
6644 if (i == HPSA_MSG_SEND_RETRY_LIMIT) {
6645 dev_err(&pdev->dev, "controller message %02x:%02x timed out\n",
6646 opcode, type);
6647 return -ETIMEDOUT;
6648 }
6649
6650 pci_free_consistent(pdev, cmd_sz, cmd, paddr64);
6651
6652 if (tag & HPSA_ERROR_BIT) {
6653 dev_err(&pdev->dev, "controller message %02x:%02x failed\n",
6654 opcode, type);
6655 return -EIO;
6656 }
6657
6658 dev_info(&pdev->dev, "controller message %02x:%02x succeeded\n",
6659 opcode, type);
6660 return 0;
6661}
6662
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006663#define hpsa_noop(p) hpsa_message(p, 3, 0)
6664
Stephen M. Cameron1df85522010-06-16 13:51:40 -05006665static int hpsa_controller_hard_reset(struct pci_dev *pdev,
Don Brace42a91642014-11-14 17:26:27 -06006666 void __iomem *vaddr, u32 use_doorbell)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006667{
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006668
Stephen M. Cameron1df85522010-06-16 13:51:40 -05006669 if (use_doorbell) {
6670 /* For everything after the P600, the PCI power state method
6671 * of resetting the controller doesn't work, so we have this
6672 * other way using the doorbell register.
6673 */
6674 dev_info(&pdev->dev, "using doorbell to reset controller\n");
Stephen M. Cameroncf0b08d2011-05-03 14:59:46 -05006675 writel(use_doorbell, vaddr + SA5_DOORBELL);
Stephen M. Cameron85009232013-09-23 13:33:36 -05006676
Justin Lindley00701a92014-05-29 10:52:47 -05006677 /* PMC hardware guys tell us we need a 10 second delay after
Stephen M. Cameron85009232013-09-23 13:33:36 -05006678 * doorbell reset and before any attempt to talk to the board
6679 * at all to ensure that this actually works and doesn't fall
6680 * over in some weird corner cases.
6681 */
Justin Lindley00701a92014-05-29 10:52:47 -05006682 msleep(10000);
Stephen M. Cameron1df85522010-06-16 13:51:40 -05006683 } else { /* Try to do it the PCI power state way */
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006684
Stephen M. Cameron1df85522010-06-16 13:51:40 -05006685 /* Quoting from the Open CISS Specification: "The Power
6686 * Management Control/Status Register (CSR) controls the power
6687 * state of the device. The normal operating state is D0,
6688 * CSR=00h. The software off state is D3, CSR=03h. To reset
6689 * the controller, place the interface device in D3 then to D0,
6690 * this causes a secondary PCI reset which will reset the
6691 * controller." */
6692
Don Brace2662cab2015-01-23 16:41:25 -06006693 int rc = 0;
6694
Stephen M. Cameron1df85522010-06-16 13:51:40 -05006695 dev_info(&pdev->dev, "using PCI PM to reset controller\n");
Don Brace2662cab2015-01-23 16:41:25 -06006696
Stephen M. Cameron1df85522010-06-16 13:51:40 -05006697 /* enter the D3hot power management state */
Don Brace2662cab2015-01-23 16:41:25 -06006698 rc = pci_set_power_state(pdev, PCI_D3hot);
6699 if (rc)
6700 return rc;
Stephen M. Cameron1df85522010-06-16 13:51:40 -05006701
6702 msleep(500);
6703
6704 /* enter the D0 power management state */
Don Brace2662cab2015-01-23 16:41:25 -06006705 rc = pci_set_power_state(pdev, PCI_D0);
6706 if (rc)
6707 return rc;
Mike Millerc4853ef2011-10-21 08:19:43 +02006708
6709 /*
6710 * The P600 requires a small delay when changing states.
6711 * Otherwise we may think the board did not reset and we bail.
6712 * This for kdump only and is particular to the P600.
6713 */
6714 msleep(500);
Stephen M. Cameron1df85522010-06-16 13:51:40 -05006715 }
6716 return 0;
6717}
6718
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08006719static void init_driver_version(char *driver_version, int len)
Stephen M. Cameron580ada32011-05-03 14:59:10 -05006720{
6721 memset(driver_version, 0, len);
Stephen M. Cameronf79cfec2012-01-19 14:00:59 -06006722 strncpy(driver_version, HPSA " " HPSA_DRIVER_VERSION, len - 1);
Stephen M. Cameron580ada32011-05-03 14:59:10 -05006723}
6724
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08006725static int write_driver_ver_to_cfgtable(struct CfgTable __iomem *cfgtable)
Stephen M. Cameron580ada32011-05-03 14:59:10 -05006726{
6727 char *driver_version;
6728 int i, size = sizeof(cfgtable->driver_version);
6729
6730 driver_version = kmalloc(size, GFP_KERNEL);
6731 if (!driver_version)
6732 return -ENOMEM;
6733
6734 init_driver_version(driver_version, size);
6735 for (i = 0; i < size; i++)
6736 writeb(driver_version[i], &cfgtable->driver_version[i]);
6737 kfree(driver_version);
6738 return 0;
6739}
6740
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08006741static void read_driver_ver_from_cfgtable(struct CfgTable __iomem *cfgtable,
6742 unsigned char *driver_ver)
Stephen M. Cameron580ada32011-05-03 14:59:10 -05006743{
6744 int i;
6745
6746 for (i = 0; i < sizeof(cfgtable->driver_version); i++)
6747 driver_ver[i] = readb(&cfgtable->driver_version[i]);
6748}
6749
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08006750static int controller_reset_failed(struct CfgTable __iomem *cfgtable)
Stephen M. Cameron580ada32011-05-03 14:59:10 -05006751{
6752
6753 char *driver_ver, *old_driver_ver;
6754 int rc, size = sizeof(cfgtable->driver_version);
6755
6756 old_driver_ver = kmalloc(2 * size, GFP_KERNEL);
6757 if (!old_driver_ver)
6758 return -ENOMEM;
6759 driver_ver = old_driver_ver + size;
6760
6761 /* After a reset, the 32 bytes of "driver version" in the cfgtable
6762 * should have been changed, otherwise we know the reset failed.
6763 */
6764 init_driver_version(old_driver_ver, size);
6765 read_driver_ver_from_cfgtable(cfgtable, driver_ver);
6766 rc = !memcmp(driver_ver, old_driver_ver, size);
6767 kfree(old_driver_ver);
6768 return rc;
6769}
Stephen M. Cameron1df85522010-06-16 13:51:40 -05006770/* This does a hard reset of the controller using PCI power management
6771 * states or the using the doorbell register.
6772 */
Tomas Henzl6b6c1cd2015-04-02 15:25:54 +02006773static int hpsa_kdump_hard_reset_controller(struct pci_dev *pdev, u32 board_id)
Stephen M. Cameron1df85522010-06-16 13:51:40 -05006774{
Stephen M. Cameron1df85522010-06-16 13:51:40 -05006775 u64 cfg_offset;
6776 u32 cfg_base_addr;
6777 u64 cfg_base_addr_index;
6778 void __iomem *vaddr;
6779 unsigned long paddr;
Stephen M. Cameron580ada32011-05-03 14:59:10 -05006780 u32 misc_fw_support;
Stephen M. Cameron270d05d2011-01-06 14:48:08 -06006781 int rc;
Stephen M. Cameron1df85522010-06-16 13:51:40 -05006782 struct CfgTable __iomem *cfgtable;
Stephen M. Cameroncf0b08d2011-05-03 14:59:46 -05006783 u32 use_doorbell;
Stephen M. Cameron270d05d2011-01-06 14:48:08 -06006784 u16 command_register;
Stephen M. Cameron1df85522010-06-16 13:51:40 -05006785
6786 /* For controllers as old as the P600, this is very nearly
6787 * the same thing as
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006788 *
6789 * pci_save_state(pci_dev);
6790 * pci_set_power_state(pci_dev, PCI_D3hot);
6791 * pci_set_power_state(pci_dev, PCI_D0);
6792 * pci_restore_state(pci_dev);
6793 *
Stephen M. Cameron1df85522010-06-16 13:51:40 -05006794 * For controllers newer than the P600, the pci power state
6795 * method of resetting doesn't work so we have another way
6796 * using the doorbell register.
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006797 */
Stephen M. Cameron18867652010-06-16 13:51:45 -05006798
Robert Elliott60f923b2015-01-23 16:42:06 -06006799 if (!ctlr_is_resettable(board_id)) {
6800 dev_warn(&pdev->dev, "Controller not resettable\n");
Stephen M. Cameron25c1e56a2011-01-06 14:48:18 -06006801 return -ENODEV;
6802 }
Stephen M. Cameron46380782011-05-03 15:00:01 -05006803
6804 /* if controller is soft- but not hard resettable... */
6805 if (!ctlr_is_hard_resettable(board_id))
6806 return -ENOTSUPP; /* try soft reset later. */
Stephen M. Cameron18867652010-06-16 13:51:45 -05006807
Stephen M. Cameron270d05d2011-01-06 14:48:08 -06006808 /* Save the PCI command register */
6809 pci_read_config_word(pdev, 4, &command_register);
Stephen M. Cameron270d05d2011-01-06 14:48:08 -06006810 pci_save_state(pdev);
Stephen M. Cameron1df85522010-06-16 13:51:40 -05006811
6812 /* find the first memory BAR, so we can find the cfg table */
6813 rc = hpsa_pci_find_memory_BAR(pdev, &paddr);
6814 if (rc)
6815 return rc;
6816 vaddr = remap_pci_mem(paddr, 0x250);
6817 if (!vaddr)
6818 return -ENOMEM;
6819
6820 /* find cfgtable in order to check if reset via doorbell is supported */
6821 rc = hpsa_find_cfg_addrs(pdev, vaddr, &cfg_base_addr,
6822 &cfg_base_addr_index, &cfg_offset);
6823 if (rc)
6824 goto unmap_vaddr;
6825 cfgtable = remap_pci_mem(pci_resource_start(pdev,
6826 cfg_base_addr_index) + cfg_offset, sizeof(*cfgtable));
6827 if (!cfgtable) {
6828 rc = -ENOMEM;
6829 goto unmap_vaddr;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006830 }
Stephen M. Cameron580ada32011-05-03 14:59:10 -05006831 rc = write_driver_ver_to_cfgtable(cfgtable);
6832 if (rc)
Tomas Henzl03741d92015-01-23 16:41:14 -06006833 goto unmap_cfgtable;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006834
Stephen M. Cameroncf0b08d2011-05-03 14:59:46 -05006835 /* If reset via doorbell register is supported, use that.
6836 * There are two such methods. Favor the newest method.
6837 */
Stephen M. Cameron1df85522010-06-16 13:51:40 -05006838 misc_fw_support = readl(&cfgtable->misc_fw_support);
Stephen M. Cameroncf0b08d2011-05-03 14:59:46 -05006839 use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET2;
6840 if (use_doorbell) {
6841 use_doorbell = DOORBELL_CTLR_RESET2;
6842 } else {
6843 use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET;
6844 if (use_doorbell) {
Stephen Cameron050f7142015-01-23 16:42:22 -06006845 dev_warn(&pdev->dev,
6846 "Soft reset not supported. Firmware update is required.\n");
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05006847 rc = -ENOTSUPP; /* try soft reset */
Stephen M. Cameroncf0b08d2011-05-03 14:59:46 -05006848 goto unmap_cfgtable;
6849 }
6850 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006851
Stephen M. Cameron1df85522010-06-16 13:51:40 -05006852 rc = hpsa_controller_hard_reset(pdev, vaddr, use_doorbell);
6853 if (rc)
6854 goto unmap_cfgtable;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006855
Stephen M. Cameron270d05d2011-01-06 14:48:08 -06006856 pci_restore_state(pdev);
Stephen M. Cameron270d05d2011-01-06 14:48:08 -06006857 pci_write_config_word(pdev, 4, command_register);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006858
Stephen M. Cameron1df85522010-06-16 13:51:40 -05006859 /* Some devices (notably the HP Smart Array 5i Controller)
6860 need a little pause here */
6861 msleep(HPSA_POST_RESET_PAUSE_MSECS);
6862
Stephen M. Cameronfe5389c2011-01-06 14:48:03 -06006863 rc = hpsa_wait_for_board_state(pdev, vaddr, BOARD_READY);
6864 if (rc) {
6865 dev_warn(&pdev->dev,
Stephen Cameron050f7142015-01-23 16:42:22 -06006866 "Failed waiting for board to become ready after hard reset\n");
Stephen M. Cameronfe5389c2011-01-06 14:48:03 -06006867 goto unmap_cfgtable;
6868 }
Stephen M. Cameronfe5389c2011-01-06 14:48:03 -06006869
Stephen M. Cameron580ada32011-05-03 14:59:10 -05006870 rc = controller_reset_failed(vaddr);
6871 if (rc < 0)
6872 goto unmap_cfgtable;
6873 if (rc) {
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05006874 dev_warn(&pdev->dev, "Unable to successfully reset "
6875 "controller. Will try soft reset.\n");
6876 rc = -ENOTSUPP;
Stephen M. Cameron580ada32011-05-03 14:59:10 -05006877 } else {
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05006878 dev_info(&pdev->dev, "board ready after hard reset.\n");
Stephen M. Cameron1df85522010-06-16 13:51:40 -05006879 }
6880
6881unmap_cfgtable:
6882 iounmap(cfgtable);
6883
6884unmap_vaddr:
6885 iounmap(vaddr);
6886 return rc;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006887}
6888
6889/*
6890 * We cannot read the structure directly, for portability we must use
6891 * the io functions.
6892 * This is for debug only.
6893 */
Don Brace42a91642014-11-14 17:26:27 -06006894static void print_cfg_table(struct device *dev, struct CfgTable __iomem *tb)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006895{
Stephen M. Cameron58f86652010-05-27 15:13:58 -05006896#ifdef HPSA_DEBUG
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006897 int i;
6898 char temp_name[17];
6899
6900 dev_info(dev, "Controller Configuration information\n");
6901 dev_info(dev, "------------------------------------\n");
6902 for (i = 0; i < 4; i++)
6903 temp_name[i] = readb(&(tb->Signature[i]));
6904 temp_name[4] = '\0';
6905 dev_info(dev, " Signature = %s\n", temp_name);
6906 dev_info(dev, " Spec Number = %d\n", readl(&(tb->SpecValence)));
6907 dev_info(dev, " Transport methods supported = 0x%x\n",
6908 readl(&(tb->TransportSupport)));
6909 dev_info(dev, " Transport methods active = 0x%x\n",
6910 readl(&(tb->TransportActive)));
6911 dev_info(dev, " Requested transport Method = 0x%x\n",
6912 readl(&(tb->HostWrite.TransportRequest)));
6913 dev_info(dev, " Coalesce Interrupt Delay = 0x%x\n",
6914 readl(&(tb->HostWrite.CoalIntDelay)));
6915 dev_info(dev, " Coalesce Interrupt Count = 0x%x\n",
6916 readl(&(tb->HostWrite.CoalIntCount)));
Robert Elliott69d6e332015-01-23 16:41:56 -06006917 dev_info(dev, " Max outstanding commands = %d\n",
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006918 readl(&(tb->CmdsOutMax)));
6919 dev_info(dev, " Bus Types = 0x%x\n", readl(&(tb->BusTypes)));
6920 for (i = 0; i < 16; i++)
6921 temp_name[i] = readb(&(tb->ServerName[i]));
6922 temp_name[16] = '\0';
6923 dev_info(dev, " Server Name = %s\n", temp_name);
6924 dev_info(dev, " Heartbeat Counter = 0x%x\n\n\n",
6925 readl(&(tb->HeartBeat)));
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006926#endif /* HPSA_DEBUG */
Stephen M. Cameron58f86652010-05-27 15:13:58 -05006927}
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006928
6929static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr)
6930{
6931 int i, offset, mem_type, bar_type;
6932
6933 if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */
6934 return 0;
6935 offset = 0;
6936 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
6937 bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE;
6938 if (bar_type == PCI_BASE_ADDRESS_SPACE_IO)
6939 offset += 4;
6940 else {
6941 mem_type = pci_resource_flags(pdev, i) &
6942 PCI_BASE_ADDRESS_MEM_TYPE_MASK;
6943 switch (mem_type) {
6944 case PCI_BASE_ADDRESS_MEM_TYPE_32:
6945 case PCI_BASE_ADDRESS_MEM_TYPE_1M:
6946 offset += 4; /* 32 bit */
6947 break;
6948 case PCI_BASE_ADDRESS_MEM_TYPE_64:
6949 offset += 8;
6950 break;
6951 default: /* reserved in PCI 2.2 */
6952 dev_warn(&pdev->dev,
6953 "base address is invalid\n");
6954 return -1;
6955 break;
6956 }
6957 }
6958 if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0)
6959 return i + 1;
6960 }
6961 return -1;
6962}
6963
Robert Elliottcc64c812015-04-23 09:33:12 -05006964static void hpsa_disable_interrupt_mode(struct ctlr_info *h)
6965{
6966 if (h->msix_vector) {
6967 if (h->pdev->msix_enabled)
6968 pci_disable_msix(h->pdev);
Robert Elliott105a3db2015-04-23 09:33:48 -05006969 h->msix_vector = 0;
Robert Elliottcc64c812015-04-23 09:33:12 -05006970 } else if (h->msi_vector) {
6971 if (h->pdev->msi_enabled)
6972 pci_disable_msi(h->pdev);
Robert Elliott105a3db2015-04-23 09:33:48 -05006973 h->msi_vector = 0;
Robert Elliottcc64c812015-04-23 09:33:12 -05006974 }
6975}
6976
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006977/* If MSI/MSI-X is supported by the kernel we will try to enable it on
Stephen Cameron050f7142015-01-23 16:42:22 -06006978 * controllers that are capable. If not, we use legacy INTx mode.
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006979 */
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08006980static void hpsa_interrupt_mode(struct ctlr_info *h)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006981{
6982#ifdef CONFIG_PCI_MSI
Matt Gates254f7962012-05-01 11:43:06 -05006983 int err, i;
6984 struct msix_entry hpsa_msix_entries[MAX_REPLY_QUEUES];
6985
6986 for (i = 0; i < MAX_REPLY_QUEUES; i++) {
6987 hpsa_msix_entries[i].vector = 0;
6988 hpsa_msix_entries[i].entry = i;
6989 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006990
6991 /* Some boards advertise MSI but don't really support it */
Stephen M. Cameron6b3f4c52010-05-27 15:13:02 -05006992 if ((h->board_id == 0x40700E11) || (h->board_id == 0x40800E11) ||
6993 (h->board_id == 0x40820E11) || (h->board_id == 0x40830E11))
Stephen M. Cameronedd16362009-12-08 14:09:11 -08006994 goto default_int_mode;
Stephen M. Cameron55c06c72010-05-27 15:12:46 -05006995 if (pci_find_capability(h->pdev, PCI_CAP_ID_MSIX)) {
Stephen Cameron050f7142015-01-23 16:42:22 -06006996 dev_info(&h->pdev->dev, "MSI-X capable controller\n");
Hannes Reineckeeee0f032014-01-15 13:30:53 +01006997 h->msix_vector = MAX_REPLY_QUEUES;
Stephen M. Cameronf89439b2014-05-29 10:53:02 -05006998 if (h->msix_vector > num_online_cpus())
6999 h->msix_vector = num_online_cpus();
Alexander Gordeev18fce3c2014-08-18 08:01:42 +02007000 err = pci_enable_msix_range(h->pdev, hpsa_msix_entries,
7001 1, h->msix_vector);
7002 if (err < 0) {
7003 dev_warn(&h->pdev->dev, "MSI-X init failed %d\n", err);
7004 h->msix_vector = 0;
7005 goto single_msi_mode;
7006 } else if (err < h->msix_vector) {
Stephen M. Cameron55c06c72010-05-27 15:12:46 -05007007 dev_warn(&h->pdev->dev, "only %d MSI-X vectors "
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007008 "available\n", err);
Hannes Reineckeeee0f032014-01-15 13:30:53 +01007009 }
Alexander Gordeev18fce3c2014-08-18 08:01:42 +02007010 h->msix_vector = err;
7011 for (i = 0; i < h->msix_vector; i++)
7012 h->intr[i] = hpsa_msix_entries[i].vector;
7013 return;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007014 }
Alexander Gordeev18fce3c2014-08-18 08:01:42 +02007015single_msi_mode:
Stephen M. Cameron55c06c72010-05-27 15:12:46 -05007016 if (pci_find_capability(h->pdev, PCI_CAP_ID_MSI)) {
Stephen Cameron050f7142015-01-23 16:42:22 -06007017 dev_info(&h->pdev->dev, "MSI capable controller\n");
Stephen M. Cameron55c06c72010-05-27 15:12:46 -05007018 if (!pci_enable_msi(h->pdev))
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007019 h->msi_vector = 1;
7020 else
Stephen M. Cameron55c06c72010-05-27 15:12:46 -05007021 dev_warn(&h->pdev->dev, "MSI init failed\n");
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007022 }
7023default_int_mode:
7024#endif /* CONFIG_PCI_MSI */
7025 /* if we get here we're going to use the default interrupt mode */
Stephen M. Camerona9a3a272011-02-15 15:32:53 -06007026 h->intr[h->intr_mode] = h->pdev->irq;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007027}
7028
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08007029static int hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id)
Stephen M. Camerone5c880d2010-05-27 15:12:52 -05007030{
7031 int i;
7032 u32 subsystem_vendor_id, subsystem_device_id;
7033
7034 subsystem_vendor_id = pdev->subsystem_vendor;
7035 subsystem_device_id = pdev->subsystem_device;
7036 *board_id = ((subsystem_device_id << 16) & 0xffff0000) |
7037 subsystem_vendor_id;
7038
7039 for (i = 0; i < ARRAY_SIZE(products); i++)
7040 if (*board_id == products[i].board_id)
7041 return i;
7042
Stephen M. Cameron6798cc02010-06-16 13:51:20 -05007043 if ((subsystem_vendor_id != PCI_VENDOR_ID_HP &&
7044 subsystem_vendor_id != PCI_VENDOR_ID_COMPAQ) ||
7045 !hpsa_allow_any) {
Stephen M. Camerone5c880d2010-05-27 15:12:52 -05007046 dev_warn(&pdev->dev, "unrecognized board ID: "
7047 "0x%08x, ignoring.\n", *board_id);
7048 return -ENODEV;
7049 }
7050 return ARRAY_SIZE(products) - 1; /* generic unknown smart array */
7051}
7052
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08007053static int hpsa_pci_find_memory_BAR(struct pci_dev *pdev,
7054 unsigned long *memory_bar)
Stephen M. Cameron3a7774c2010-05-27 15:13:07 -05007055{
7056 int i;
7057
7058 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++)
Stephen M. Cameron12d2cd42010-06-16 13:51:25 -05007059 if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) {
Stephen M. Cameron3a7774c2010-05-27 15:13:07 -05007060 /* addressing mode bits already removed */
Stephen M. Cameron12d2cd42010-06-16 13:51:25 -05007061 *memory_bar = pci_resource_start(pdev, i);
7062 dev_dbg(&pdev->dev, "memory BAR = %lx\n",
Stephen M. Cameron3a7774c2010-05-27 15:13:07 -05007063 *memory_bar);
7064 return 0;
7065 }
Stephen M. Cameron12d2cd42010-06-16 13:51:25 -05007066 dev_warn(&pdev->dev, "no memory BAR found\n");
Stephen M. Cameron3a7774c2010-05-27 15:13:07 -05007067 return -ENODEV;
7068}
7069
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08007070static int hpsa_wait_for_board_state(struct pci_dev *pdev, void __iomem *vaddr,
7071 int wait_for_ready)
Stephen M. Cameron2c4c8c82010-05-27 15:13:12 -05007072{
Stephen M. Cameronfe5389c2011-01-06 14:48:03 -06007073 int i, iterations;
Stephen M. Cameron2c4c8c82010-05-27 15:13:12 -05007074 u32 scratchpad;
Stephen M. Cameronfe5389c2011-01-06 14:48:03 -06007075 if (wait_for_ready)
7076 iterations = HPSA_BOARD_READY_ITERATIONS;
7077 else
7078 iterations = HPSA_BOARD_NOT_READY_ITERATIONS;
Stephen M. Cameron2c4c8c82010-05-27 15:13:12 -05007079
Stephen M. Cameronfe5389c2011-01-06 14:48:03 -06007080 for (i = 0; i < iterations; i++) {
7081 scratchpad = readl(vaddr + SA5_SCRATCHPAD_OFFSET);
7082 if (wait_for_ready) {
7083 if (scratchpad == HPSA_FIRMWARE_READY)
7084 return 0;
7085 } else {
7086 if (scratchpad != HPSA_FIRMWARE_READY)
7087 return 0;
7088 }
Stephen M. Cameron2c4c8c82010-05-27 15:13:12 -05007089 msleep(HPSA_BOARD_READY_POLL_INTERVAL_MSECS);
7090 }
Stephen M. Cameronfe5389c2011-01-06 14:48:03 -06007091 dev_warn(&pdev->dev, "board not ready, timed out.\n");
Stephen M. Cameron2c4c8c82010-05-27 15:13:12 -05007092 return -ENODEV;
7093}
7094
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08007095static int hpsa_find_cfg_addrs(struct pci_dev *pdev, void __iomem *vaddr,
7096 u32 *cfg_base_addr, u64 *cfg_base_addr_index,
7097 u64 *cfg_offset)
Stephen M. Camerona51fd472010-06-16 13:51:30 -05007098{
7099 *cfg_base_addr = readl(vaddr + SA5_CTCFG_OFFSET);
7100 *cfg_offset = readl(vaddr + SA5_CTMEM_OFFSET);
7101 *cfg_base_addr &= (u32) 0x0000ffff;
7102 *cfg_base_addr_index = find_PCI_BAR_index(pdev, *cfg_base_addr);
7103 if (*cfg_base_addr_index == -1) {
7104 dev_warn(&pdev->dev, "cannot find cfg_base_addr_index\n");
7105 return -ENODEV;
7106 }
7107 return 0;
7108}
7109
Robert Elliott195f2c62015-04-23 09:33:17 -05007110static void hpsa_free_cfgtables(struct ctlr_info *h)
7111{
Robert Elliott105a3db2015-04-23 09:33:48 -05007112 if (h->transtable) {
Robert Elliott195f2c62015-04-23 09:33:17 -05007113 iounmap(h->transtable);
Robert Elliott105a3db2015-04-23 09:33:48 -05007114 h->transtable = NULL;
7115 }
7116 if (h->cfgtable) {
Robert Elliott195f2c62015-04-23 09:33:17 -05007117 iounmap(h->cfgtable);
Robert Elliott105a3db2015-04-23 09:33:48 -05007118 h->cfgtable = NULL;
7119 }
Robert Elliott195f2c62015-04-23 09:33:17 -05007120}
7121
7122/* Find and map CISS config table and transfer table
7123+ * several items must be unmapped (freed) later
7124+ * */
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08007125static int hpsa_find_cfgtables(struct ctlr_info *h)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007126{
Stephen M. Cameron01a02ff2010-02-04 08:41:33 -06007127 u64 cfg_offset;
7128 u32 cfg_base_addr;
7129 u64 cfg_base_addr_index;
Don Brace303932f2010-02-04 08:42:40 -06007130 u32 trans_offset;
Stephen M. Camerona51fd472010-06-16 13:51:30 -05007131 int rc;
Stephen M. Cameron77c44952010-05-27 15:13:17 -05007132
Stephen M. Camerona51fd472010-06-16 13:51:30 -05007133 rc = hpsa_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr,
7134 &cfg_base_addr_index, &cfg_offset);
7135 if (rc)
7136 return rc;
Stephen M. Cameron77c44952010-05-27 15:13:17 -05007137 h->cfgtable = remap_pci_mem(pci_resource_start(h->pdev,
Stephen M. Camerona51fd472010-06-16 13:51:30 -05007138 cfg_base_addr_index) + cfg_offset, sizeof(*h->cfgtable));
Robert Elliottcd3c81c2015-01-23 16:42:27 -06007139 if (!h->cfgtable) {
7140 dev_err(&h->pdev->dev, "Failed mapping cfgtable\n");
Stephen M. Cameron77c44952010-05-27 15:13:17 -05007141 return -ENOMEM;
Robert Elliottcd3c81c2015-01-23 16:42:27 -06007142 }
Stephen M. Cameron580ada32011-05-03 14:59:10 -05007143 rc = write_driver_ver_to_cfgtable(h->cfgtable);
7144 if (rc)
7145 return rc;
Stephen M. Cameron77c44952010-05-27 15:13:17 -05007146 /* Find performant mode table. */
Stephen M. Camerona51fd472010-06-16 13:51:30 -05007147 trans_offset = readl(&h->cfgtable->TransMethodOffset);
Stephen M. Cameron77c44952010-05-27 15:13:17 -05007148 h->transtable = remap_pci_mem(pci_resource_start(h->pdev,
7149 cfg_base_addr_index)+cfg_offset+trans_offset,
7150 sizeof(*h->transtable));
Robert Elliott195f2c62015-04-23 09:33:17 -05007151 if (!h->transtable) {
7152 dev_err(&h->pdev->dev, "Failed mapping transfer table\n");
7153 hpsa_free_cfgtables(h);
Stephen M. Cameron77c44952010-05-27 15:13:17 -05007154 return -ENOMEM;
Robert Elliott195f2c62015-04-23 09:33:17 -05007155 }
Stephen M. Cameron77c44952010-05-27 15:13:17 -05007156 return 0;
7157}
7158
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08007159static void hpsa_get_max_perf_mode_cmds(struct ctlr_info *h)
Stephen M. Cameroncba3d382010-06-16 13:51:56 -05007160{
Stephen Cameron41ce4c32015-04-23 09:31:47 -05007161#define MIN_MAX_COMMANDS 16
7162 BUILD_BUG_ON(MIN_MAX_COMMANDS <= HPSA_NRESERVED_CMDS);
7163
7164 h->max_commands = readl(&h->cfgtable->MaxPerformantModeCommands);
Stephen M. Cameron72ceeae2011-01-06 14:48:13 -06007165
7166 /* Limit commands in memory limited kdump scenario. */
7167 if (reset_devices && h->max_commands > 32)
7168 h->max_commands = 32;
7169
Stephen Cameron41ce4c32015-04-23 09:31:47 -05007170 if (h->max_commands < MIN_MAX_COMMANDS) {
7171 dev_warn(&h->pdev->dev,
7172 "Controller reports max supported commands of %d Using %d instead. Ensure that firmware is up to date.\n",
7173 h->max_commands,
7174 MIN_MAX_COMMANDS);
7175 h->max_commands = MIN_MAX_COMMANDS;
Stephen M. Cameroncba3d382010-06-16 13:51:56 -05007176 }
7177}
7178
Webb Scalesc7ee65b2015-01-23 16:42:17 -06007179/* If the controller reports that the total max sg entries is greater than 512,
7180 * then we know that chained SG blocks work. (Original smart arrays did not
7181 * support chained SG blocks and would return zero for max sg entries.)
7182 */
7183static int hpsa_supports_chained_sg_blocks(struct ctlr_info *h)
7184{
7185 return h->maxsgentries > 512;
7186}
7187
Stephen M. Cameronb93d7532010-05-27 15:13:27 -05007188/* Interrogate the hardware for some limits:
7189 * max commands, max SG elements without chaining, and with chaining,
7190 * SG chain block size, etc.
7191 */
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08007192static void hpsa_find_board_params(struct ctlr_info *h)
Stephen M. Cameronb93d7532010-05-27 15:13:27 -05007193{
Stephen M. Cameroncba3d382010-06-16 13:51:56 -05007194 hpsa_get_max_perf_mode_cmds(h);
Stephen Cameron45fcb862015-01-23 16:43:04 -06007195 h->nr_cmds = h->max_commands;
Stephen M. Cameronb93d7532010-05-27 15:13:27 -05007196 h->maxsgentries = readl(&(h->cfgtable->MaxScatterGatherElements));
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06007197 h->fw_support = readl(&(h->cfgtable->misc_fw_support));
Webb Scalesc7ee65b2015-01-23 16:42:17 -06007198 if (hpsa_supports_chained_sg_blocks(h)) {
7199 /* Limit in-command s/g elements to 32 save dma'able memory. */
Stephen M. Cameronb93d7532010-05-27 15:13:27 -05007200 h->max_cmd_sg_entries = 32;
Webb Scales1a63ea62014-11-14 17:26:43 -06007201 h->chainsize = h->maxsgentries - h->max_cmd_sg_entries;
Stephen M. Cameronb93d7532010-05-27 15:13:27 -05007202 h->maxsgentries--; /* save one for chain pointer */
7203 } else {
Webb Scalesc7ee65b2015-01-23 16:42:17 -06007204 /*
7205 * Original smart arrays supported at most 31 s/g entries
7206 * embedded inline in the command (trying to use more
7207 * would lock up the controller)
7208 */
7209 h->max_cmd_sg_entries = 31;
Webb Scales1a63ea62014-11-14 17:26:43 -06007210 h->maxsgentries = 31; /* default to traditional values */
Webb Scalesc7ee65b2015-01-23 16:42:17 -06007211 h->chainsize = 0;
Stephen M. Cameronb93d7532010-05-27 15:13:27 -05007212 }
Stephen M. Cameron75167d22012-05-01 11:42:51 -05007213
7214 /* Find out what task management functions are supported and cache */
7215 h->TMFSupportFlags = readl(&(h->cfgtable->TMFSupportFlags));
Scott Teel0e7a7fc2014-02-18 13:55:59 -06007216 if (!(HPSATMF_PHYS_TASK_ABORT & h->TMFSupportFlags))
7217 dev_warn(&h->pdev->dev, "Physical aborts not supported\n");
7218 if (!(HPSATMF_LOG_TASK_ABORT & h->TMFSupportFlags))
7219 dev_warn(&h->pdev->dev, "Logical aborts not supported\n");
Stephen Cameron8be986c2015-04-23 09:34:06 -05007220 if (!(HPSATMF_IOACCEL_ENABLED & h->TMFSupportFlags))
7221 dev_warn(&h->pdev->dev, "HP SSD Smart Path aborts not supported\n");
Stephen M. Cameronb93d7532010-05-27 15:13:27 -05007222}
7223
Stephen M. Cameron76c46e42010-05-27 15:13:32 -05007224static inline bool hpsa_CISS_signature_present(struct ctlr_info *h)
7225{
Akinobu Mita0fc9fd42012-04-04 22:14:59 +09007226 if (!check_signature(h->cfgtable->Signature, "CISS", 4)) {
Stephen Cameron050f7142015-01-23 16:42:22 -06007227 dev_err(&h->pdev->dev, "not a valid CISS config table\n");
Stephen M. Cameron76c46e42010-05-27 15:13:32 -05007228 return false;
7229 }
7230 return true;
7231}
7232
Stephen M. Cameron97a5e982013-12-04 17:10:16 -06007233static inline void hpsa_set_driver_support_bits(struct ctlr_info *h)
Stephen M. Cameronf7c39102010-05-27 15:13:38 -05007234{
Stephen M. Cameron97a5e982013-12-04 17:10:16 -06007235 u32 driver_support;
Stephen M. Cameronf7c39102010-05-27 15:13:38 -05007236
Stephen M. Cameron97a5e982013-12-04 17:10:16 -06007237 driver_support = readl(&(h->cfgtable->driver_support));
Arnd Bergmann0b9e7b72014-06-26 15:44:52 +02007238 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
7239#ifdef CONFIG_X86
Stephen M. Cameron97a5e982013-12-04 17:10:16 -06007240 driver_support |= ENABLE_SCSI_PREFETCH;
Stephen M. Cameronf7c39102010-05-27 15:13:38 -05007241#endif
Stephen M. Cameron28e13442013-12-04 17:10:21 -06007242 driver_support |= ENABLE_UNIT_ATTN;
7243 writel(driver_support, &(h->cfgtable->driver_support));
Stephen M. Cameronf7c39102010-05-27 15:13:38 -05007244}
7245
Stephen M. Cameron3d0eab62010-05-27 15:13:43 -05007246/* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result
7247 * in a prefetch beyond physical memory.
7248 */
7249static inline void hpsa_p600_dma_prefetch_quirk(struct ctlr_info *h)
7250{
7251 u32 dma_prefetch;
7252
7253 if (h->board_id != 0x3225103C)
7254 return;
7255 dma_prefetch = readl(h->vaddr + I2O_DMA1_CFG);
7256 dma_prefetch |= 0x8000;
7257 writel(dma_prefetch, h->vaddr + I2O_DMA1_CFG);
7258}
7259
Robert Elliottc706a792015-01-23 16:45:01 -06007260static int hpsa_wait_for_clear_event_notify_ack(struct ctlr_info *h)
Stephen M. Cameron76438d02014-02-18 13:55:43 -06007261{
7262 int i;
7263 u32 doorbell_value;
7264 unsigned long flags;
7265 /* wait until the clear_event_notify bit 6 is cleared by controller. */
Robert Elliott007e7aa2015-01-23 16:44:56 -06007266 for (i = 0; i < MAX_CLEAR_EVENT_WAIT; i++) {
Stephen M. Cameron76438d02014-02-18 13:55:43 -06007267 spin_lock_irqsave(&h->lock, flags);
7268 doorbell_value = readl(h->vaddr + SA5_DOORBELL);
7269 spin_unlock_irqrestore(&h->lock, flags);
7270 if (!(doorbell_value & DOORBELL_CLEAR_EVENTS))
Robert Elliottc706a792015-01-23 16:45:01 -06007271 goto done;
Stephen M. Cameron76438d02014-02-18 13:55:43 -06007272 /* delay and try again */
Robert Elliott007e7aa2015-01-23 16:44:56 -06007273 msleep(CLEAR_EVENT_WAIT_INTERVAL);
Stephen M. Cameron76438d02014-02-18 13:55:43 -06007274 }
Robert Elliottc706a792015-01-23 16:45:01 -06007275 return -ENODEV;
7276done:
7277 return 0;
Stephen M. Cameron76438d02014-02-18 13:55:43 -06007278}
7279
Robert Elliottc706a792015-01-23 16:45:01 -06007280static int hpsa_wait_for_mode_change_ack(struct ctlr_info *h)
Stephen M. Cameroneb6b2ae2010-05-27 15:13:48 -05007281{
7282 int i;
Stephen M. Cameron6eaf46f2011-01-06 14:48:24 -06007283 u32 doorbell_value;
7284 unsigned long flags;
Stephen M. Cameroneb6b2ae2010-05-27 15:13:48 -05007285
7286 /* under certain very rare conditions, this can take awhile.
7287 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
7288 * as we enter this code.)
7289 */
Robert Elliott007e7aa2015-01-23 16:44:56 -06007290 for (i = 0; i < MAX_MODE_CHANGE_WAIT; i++) {
Webb Scales25163bd2015-04-23 09:32:00 -05007291 if (h->remove_in_progress)
7292 goto done;
Stephen M. Cameron6eaf46f2011-01-06 14:48:24 -06007293 spin_lock_irqsave(&h->lock, flags);
7294 doorbell_value = readl(h->vaddr + SA5_DOORBELL);
7295 spin_unlock_irqrestore(&h->lock, flags);
Dan Carpenter382be662011-02-15 15:33:13 -06007296 if (!(doorbell_value & CFGTBL_ChangeReq))
Robert Elliottc706a792015-01-23 16:45:01 -06007297 goto done;
Stephen M. Cameroneb6b2ae2010-05-27 15:13:48 -05007298 /* delay and try again */
Robert Elliott007e7aa2015-01-23 16:44:56 -06007299 msleep(MODE_CHANGE_WAIT_INTERVAL);
Stephen M. Cameroneb6b2ae2010-05-27 15:13:48 -05007300 }
Robert Elliottc706a792015-01-23 16:45:01 -06007301 return -ENODEV;
7302done:
7303 return 0;
Stephen M. Cameron3f4336f2010-05-27 15:14:08 -05007304}
7305
Robert Elliottc706a792015-01-23 16:45:01 -06007306/* return -ENODEV or other reason on error, 0 on success */
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08007307static int hpsa_enter_simple_mode(struct ctlr_info *h)
Stephen M. Cameron3f4336f2010-05-27 15:14:08 -05007308{
7309 u32 trans_support;
7310
7311 trans_support = readl(&(h->cfgtable->TransportSupport));
7312 if (!(trans_support & SIMPLE_MODE))
7313 return -ENOTSUPP;
7314
7315 h->max_commands = readl(&(h->cfgtable->CmdsOutMax));
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06007316
Stephen M. Cameron3f4336f2010-05-27 15:14:08 -05007317 /* Update the field, and then ring the doorbell */
7318 writel(CFGTBL_Trans_Simple, &(h->cfgtable->HostWrite.TransportRequest));
Stephen M. Cameronb9af4932014-02-18 13:56:29 -06007319 writel(0, &h->cfgtable->HostWrite.command_pool_addr_hi);
Stephen M. Cameron3f4336f2010-05-27 15:14:08 -05007320 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
Robert Elliottc706a792015-01-23 16:45:01 -06007321 if (hpsa_wait_for_mode_change_ack(h))
7322 goto error;
Stephen M. Cameroneb6b2ae2010-05-27 15:13:48 -05007323 print_cfg_table(&h->pdev->dev, h->cfgtable);
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06007324 if (!(readl(&(h->cfgtable->TransportActive)) & CFGTBL_Trans_Simple))
7325 goto error;
Stephen M. Cameron960a30e2011-02-15 15:33:03 -06007326 h->transMethod = CFGTBL_Trans_Simple;
Stephen M. Cameroneb6b2ae2010-05-27 15:13:48 -05007327 return 0;
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06007328error:
Stephen Cameron050f7142015-01-23 16:42:22 -06007329 dev_err(&h->pdev->dev, "failed to enter simple mode\n");
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06007330 return -ENODEV;
Stephen M. Cameroneb6b2ae2010-05-27 15:13:48 -05007331}
7332
Robert Elliott195f2c62015-04-23 09:33:17 -05007333/* free items allocated or mapped by hpsa_pci_init */
7334static void hpsa_free_pci_init(struct ctlr_info *h)
7335{
7336 hpsa_free_cfgtables(h); /* pci_init 4 */
7337 iounmap(h->vaddr); /* pci_init 3 */
Robert Elliott105a3db2015-04-23 09:33:48 -05007338 h->vaddr = NULL;
Robert Elliott195f2c62015-04-23 09:33:17 -05007339 hpsa_disable_interrupt_mode(h); /* pci_init 2 */
Robert Elliott943a7022015-04-23 09:34:32 -05007340 /*
7341 * call pci_disable_device before pci_release_regions per
7342 * Documentation/PCI/pci.txt
7343 */
Robert Elliott195f2c62015-04-23 09:33:17 -05007344 pci_disable_device(h->pdev); /* pci_init 1 */
Robert Elliott943a7022015-04-23 09:34:32 -05007345 pci_release_regions(h->pdev); /* pci_init 2 */
Robert Elliott195f2c62015-04-23 09:33:17 -05007346}
7347
7348/* several items must be freed later */
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08007349static int hpsa_pci_init(struct ctlr_info *h)
Stephen M. Cameron77c44952010-05-27 15:13:17 -05007350{
Stephen M. Cameroneb6b2ae2010-05-27 15:13:48 -05007351 int prod_index, err;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007352
Stephen M. Camerone5c880d2010-05-27 15:12:52 -05007353 prod_index = hpsa_lookup_board_id(h->pdev, &h->board_id);
7354 if (prod_index < 0)
Robert Elliott60f923b2015-01-23 16:42:06 -06007355 return prod_index;
Stephen M. Camerone5c880d2010-05-27 15:12:52 -05007356 h->product_name = products[prod_index].product_name;
7357 h->access = *(products[prod_index].access);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007358
Stephen Cameron9b5c48c2015-04-23 09:32:06 -05007359 h->needs_abort_tags_swizzled =
7360 ctlr_needs_abort_tags_swizzled(h->board_id);
7361
Matthew Garrette5a44df2011-11-11 11:14:23 -05007362 pci_disable_link_state(h->pdev, PCIE_LINK_STATE_L0S |
7363 PCIE_LINK_STATE_L1 | PCIE_LINK_STATE_CLKPM);
7364
Stephen M. Cameron55c06c72010-05-27 15:12:46 -05007365 err = pci_enable_device(h->pdev);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007366 if (err) {
Robert Elliott195f2c62015-04-23 09:33:17 -05007367 dev_err(&h->pdev->dev, "failed to enable PCI device\n");
Robert Elliott943a7022015-04-23 09:34:32 -05007368 pci_disable_device(h->pdev);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007369 return err;
7370 }
7371
Stephen M. Cameronf79cfec2012-01-19 14:00:59 -06007372 err = pci_request_regions(h->pdev, HPSA);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007373 if (err) {
Stephen M. Cameron55c06c72010-05-27 15:12:46 -05007374 dev_err(&h->pdev->dev,
Robert Elliott195f2c62015-04-23 09:33:17 -05007375 "failed to obtain PCI resources\n");
Robert Elliott943a7022015-04-23 09:34:32 -05007376 pci_disable_device(h->pdev);
7377 return err;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007378 }
Robert Elliott4fa604e2014-11-14 17:27:24 -06007379
7380 pci_set_master(h->pdev);
7381
Stephen M. Cameron6b3f4c52010-05-27 15:13:02 -05007382 hpsa_interrupt_mode(h);
Stephen M. Cameron12d2cd42010-06-16 13:51:25 -05007383 err = hpsa_pci_find_memory_BAR(h->pdev, &h->paddr);
Stephen M. Cameron3a7774c2010-05-27 15:13:07 -05007384 if (err)
Robert Elliott195f2c62015-04-23 09:33:17 -05007385 goto clean2; /* intmode+region, pci */
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007386 h->vaddr = remap_pci_mem(h->paddr, 0x250);
Stephen M. Cameron204892e2010-05-27 15:13:22 -05007387 if (!h->vaddr) {
Robert Elliott195f2c62015-04-23 09:33:17 -05007388 dev_err(&h->pdev->dev, "failed to remap PCI mem\n");
Stephen M. Cameron204892e2010-05-27 15:13:22 -05007389 err = -ENOMEM;
Robert Elliott195f2c62015-04-23 09:33:17 -05007390 goto clean2; /* intmode+region, pci */
Stephen M. Cameron204892e2010-05-27 15:13:22 -05007391 }
Stephen M. Cameronfe5389c2011-01-06 14:48:03 -06007392 err = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY);
Stephen M. Cameron2c4c8c82010-05-27 15:13:12 -05007393 if (err)
Robert Elliott195f2c62015-04-23 09:33:17 -05007394 goto clean3; /* vaddr, intmode+region, pci */
Stephen M. Cameron77c44952010-05-27 15:13:17 -05007395 err = hpsa_find_cfgtables(h);
7396 if (err)
Robert Elliott195f2c62015-04-23 09:33:17 -05007397 goto clean3; /* vaddr, intmode+region, pci */
Stephen M. Cameronb93d7532010-05-27 15:13:27 -05007398 hpsa_find_board_params(h);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007399
Stephen M. Cameron76c46e42010-05-27 15:13:32 -05007400 if (!hpsa_CISS_signature_present(h)) {
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007401 err = -ENODEV;
Robert Elliott195f2c62015-04-23 09:33:17 -05007402 goto clean4; /* cfgtables, vaddr, intmode+region, pci */
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007403 }
Stephen M. Cameron97a5e982013-12-04 17:10:16 -06007404 hpsa_set_driver_support_bits(h);
Stephen M. Cameron3d0eab62010-05-27 15:13:43 -05007405 hpsa_p600_dma_prefetch_quirk(h);
Stephen M. Cameroneb6b2ae2010-05-27 15:13:48 -05007406 err = hpsa_enter_simple_mode(h);
7407 if (err)
Robert Elliott195f2c62015-04-23 09:33:17 -05007408 goto clean4; /* cfgtables, vaddr, intmode+region, pci */
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007409 return 0;
7410
Robert Elliott195f2c62015-04-23 09:33:17 -05007411clean4: /* cfgtables, vaddr, intmode+region, pci */
7412 hpsa_free_cfgtables(h);
7413clean3: /* vaddr, intmode+region, pci */
7414 iounmap(h->vaddr);
Robert Elliott105a3db2015-04-23 09:33:48 -05007415 h->vaddr = NULL;
Robert Elliott195f2c62015-04-23 09:33:17 -05007416clean2: /* intmode+region, pci */
7417 hpsa_disable_interrupt_mode(h);
Robert Elliott943a7022015-04-23 09:34:32 -05007418 /*
7419 * call pci_disable_device before pci_release_regions per
7420 * Documentation/PCI/pci.txt
7421 */
Robert Elliott195f2c62015-04-23 09:33:17 -05007422 pci_disable_device(h->pdev);
Robert Elliott943a7022015-04-23 09:34:32 -05007423 pci_release_regions(h->pdev);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007424 return err;
7425}
7426
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08007427static void hpsa_hba_inquiry(struct ctlr_info *h)
Stephen M. Cameron339b2b12010-02-04 08:42:50 -06007428{
7429 int rc;
7430
7431#define HBA_INQUIRY_BYTE_COUNT 64
7432 h->hba_inquiry_data = kmalloc(HBA_INQUIRY_BYTE_COUNT, GFP_KERNEL);
7433 if (!h->hba_inquiry_data)
7434 return;
7435 rc = hpsa_scsi_do_inquiry(h, RAID_CTLR_LUNID, 0,
7436 h->hba_inquiry_data, HBA_INQUIRY_BYTE_COUNT);
7437 if (rc != 0) {
7438 kfree(h->hba_inquiry_data);
7439 h->hba_inquiry_data = NULL;
7440 }
7441}
7442
Tomas Henzl6b6c1cd2015-04-02 15:25:54 +02007443static int hpsa_init_reset_devices(struct pci_dev *pdev, u32 board_id)
Stephen M. Cameron4c2a8c42010-06-16 13:51:35 -05007444{
Stephen M. Cameron1df85522010-06-16 13:51:40 -05007445 int rc, i;
Tomas Henzl3b747292015-01-23 16:41:20 -06007446 void __iomem *vaddr;
Stephen M. Cameron4c2a8c42010-06-16 13:51:35 -05007447
7448 if (!reset_devices)
7449 return 0;
7450
Tomas Henzl132aa222014-08-14 16:12:39 +02007451 /* kdump kernel is loading, we don't know in which state is
7452 * the pci interface. The dev->enable_cnt is equal zero
7453 * so we call enable+disable, wait a while and switch it on.
7454 */
7455 rc = pci_enable_device(pdev);
7456 if (rc) {
7457 dev_warn(&pdev->dev, "Failed to enable PCI device\n");
7458 return -ENODEV;
7459 }
7460 pci_disable_device(pdev);
7461 msleep(260); /* a randomly chosen number */
7462 rc = pci_enable_device(pdev);
7463 if (rc) {
7464 dev_warn(&pdev->dev, "failed to enable device.\n");
7465 return -ENODEV;
7466 }
Robert Elliott4fa604e2014-11-14 17:27:24 -06007467
Tomas Henzl859c75a2014-09-12 14:44:15 +02007468 pci_set_master(pdev);
Robert Elliott4fa604e2014-11-14 17:27:24 -06007469
Tomas Henzl3b747292015-01-23 16:41:20 -06007470 vaddr = pci_ioremap_bar(pdev, 0);
7471 if (vaddr == NULL) {
7472 rc = -ENOMEM;
7473 goto out_disable;
7474 }
7475 writel(SA5_INTR_OFF, vaddr + SA5_REPLY_INTR_MASK_OFFSET);
7476 iounmap(vaddr);
7477
Stephen M. Cameron1df85522010-06-16 13:51:40 -05007478 /* Reset the controller with a PCI power-cycle or via doorbell */
Tomas Henzl6b6c1cd2015-04-02 15:25:54 +02007479 rc = hpsa_kdump_hard_reset_controller(pdev, board_id);
Stephen M. Cameron4c2a8c42010-06-16 13:51:35 -05007480
Stephen M. Cameron1df85522010-06-16 13:51:40 -05007481 /* -ENOTSUPP here means we cannot reset the controller
7482 * but it's already (and still) up and running in
Stephen M. Cameron18867652010-06-16 13:51:45 -05007483 * "performant mode". Or, it might be 640x, which can't reset
7484 * due to concerns about shared bbwc between 6402/6404 pair.
Stephen M. Cameron1df85522010-06-16 13:51:40 -05007485 */
Robert Elliottadf1b3a2015-01-23 16:42:01 -06007486 if (rc)
Tomas Henzl132aa222014-08-14 16:12:39 +02007487 goto out_disable;
Stephen M. Cameron4c2a8c42010-06-16 13:51:35 -05007488
7489 /* Now try to get the controller to respond to a no-op */
Robert Elliott1ba66c92015-01-23 16:42:11 -06007490 dev_info(&pdev->dev, "Waiting for controller to respond to no-op\n");
Stephen M. Cameron4c2a8c42010-06-16 13:51:35 -05007491 for (i = 0; i < HPSA_POST_RESET_NOOP_RETRIES; i++) {
7492 if (hpsa_noop(pdev) == 0)
7493 break;
7494 else
7495 dev_warn(&pdev->dev, "no-op failed%s\n",
7496 (i < 11 ? "; re-trying" : ""));
7497 }
Tomas Henzl132aa222014-08-14 16:12:39 +02007498
7499out_disable:
7500
7501 pci_disable_device(pdev);
7502 return rc;
Stephen M. Cameron4c2a8c42010-06-16 13:51:35 -05007503}
7504
Robert Elliott1fb7c982015-04-23 09:33:22 -05007505static void hpsa_free_cmd_pool(struct ctlr_info *h)
7506{
7507 kfree(h->cmd_pool_bits);
Robert Elliott105a3db2015-04-23 09:33:48 -05007508 h->cmd_pool_bits = NULL;
7509 if (h->cmd_pool) {
Robert Elliott1fb7c982015-04-23 09:33:22 -05007510 pci_free_consistent(h->pdev,
7511 h->nr_cmds * sizeof(struct CommandList),
7512 h->cmd_pool,
7513 h->cmd_pool_dhandle);
Robert Elliott105a3db2015-04-23 09:33:48 -05007514 h->cmd_pool = NULL;
7515 h->cmd_pool_dhandle = 0;
7516 }
7517 if (h->errinfo_pool) {
Robert Elliott1fb7c982015-04-23 09:33:22 -05007518 pci_free_consistent(h->pdev,
7519 h->nr_cmds * sizeof(struct ErrorInfo),
7520 h->errinfo_pool,
7521 h->errinfo_pool_dhandle);
Robert Elliott105a3db2015-04-23 09:33:48 -05007522 h->errinfo_pool = NULL;
7523 h->errinfo_pool_dhandle = 0;
7524 }
Robert Elliott1fb7c982015-04-23 09:33:22 -05007525}
7526
Robert Elliottd37ffbe2015-04-23 09:32:27 -05007527static int hpsa_alloc_cmd_pool(struct ctlr_info *h)
Stephen M. Cameron2e9d1b32011-05-03 14:59:20 -05007528{
7529 h->cmd_pool_bits = kzalloc(
7530 DIV_ROUND_UP(h->nr_cmds, BITS_PER_LONG) *
7531 sizeof(unsigned long), GFP_KERNEL);
7532 h->cmd_pool = pci_alloc_consistent(h->pdev,
7533 h->nr_cmds * sizeof(*h->cmd_pool),
7534 &(h->cmd_pool_dhandle));
7535 h->errinfo_pool = pci_alloc_consistent(h->pdev,
7536 h->nr_cmds * sizeof(*h->errinfo_pool),
7537 &(h->errinfo_pool_dhandle));
7538 if ((h->cmd_pool_bits == NULL)
7539 || (h->cmd_pool == NULL)
7540 || (h->errinfo_pool == NULL)) {
7541 dev_err(&h->pdev->dev, "out of memory in %s", __func__);
Robert Elliott2c143342015-01-23 16:42:48 -06007542 goto clean_up;
Stephen M. Cameron2e9d1b32011-05-03 14:59:20 -05007543 }
Stephen Cameron360c73b2015-04-23 09:32:32 -05007544 hpsa_preinitialize_commands(h);
Stephen M. Cameron2e9d1b32011-05-03 14:59:20 -05007545 return 0;
Robert Elliott2c143342015-01-23 16:42:48 -06007546clean_up:
7547 hpsa_free_cmd_pool(h);
7548 return -ENOMEM;
Stephen M. Cameron2e9d1b32011-05-03 14:59:20 -05007549}
7550
Stephen M. Cameron41b3cf02014-05-29 10:53:13 -05007551static void hpsa_irq_affinity_hints(struct ctlr_info *h)
7552{
Fabian Frederickec429952015-01-23 16:41:46 -06007553 int i, cpu;
Stephen M. Cameron41b3cf02014-05-29 10:53:13 -05007554
7555 cpu = cpumask_first(cpu_online_mask);
7556 for (i = 0; i < h->msix_vector; i++) {
Fabian Frederickec429952015-01-23 16:41:46 -06007557 irq_set_affinity_hint(h->intr[i], get_cpu_mask(cpu));
Stephen M. Cameron41b3cf02014-05-29 10:53:13 -05007558 cpu = cpumask_next(cpu, cpu_online_mask);
7559 }
7560}
7561
Robert Elliottec501a12015-01-23 16:41:40 -06007562/* clear affinity hints and free MSI-X, MSI, or legacy INTx vectors */
7563static void hpsa_free_irqs(struct ctlr_info *h)
7564{
7565 int i;
7566
7567 if (!h->msix_vector || h->intr_mode != PERF_MODE_INT) {
7568 /* Single reply queue, only one irq to free */
7569 i = h->intr_mode;
7570 irq_set_affinity_hint(h->intr[i], NULL);
7571 free_irq(h->intr[i], &h->q[i]);
Robert Elliott105a3db2015-04-23 09:33:48 -05007572 h->q[i] = 0;
Robert Elliottec501a12015-01-23 16:41:40 -06007573 return;
7574 }
7575
7576 for (i = 0; i < h->msix_vector; i++) {
7577 irq_set_affinity_hint(h->intr[i], NULL);
7578 free_irq(h->intr[i], &h->q[i]);
Robert Elliott105a3db2015-04-23 09:33:48 -05007579 h->q[i] = 0;
Robert Elliottec501a12015-01-23 16:41:40 -06007580 }
Robert Elliotta4e17fc2015-01-23 16:41:51 -06007581 for (; i < MAX_REPLY_QUEUES; i++)
7582 h->q[i] = 0;
Robert Elliottec501a12015-01-23 16:41:40 -06007583}
7584
Robert Elliott9ee61792015-01-23 16:42:32 -06007585/* returns 0 on success; cleans up and returns -Enn on error */
7586static int hpsa_request_irqs(struct ctlr_info *h,
Stephen M. Cameron0ae01a32011-05-03 14:59:25 -05007587 irqreturn_t (*msixhandler)(int, void *),
7588 irqreturn_t (*intxhandler)(int, void *))
7589{
Matt Gates254f7962012-05-01 11:43:06 -05007590 int rc, i;
Stephen M. Cameron0ae01a32011-05-03 14:59:25 -05007591
Matt Gates254f7962012-05-01 11:43:06 -05007592 /*
7593 * initialize h->q[x] = x so that interrupt handlers know which
7594 * queue to process.
7595 */
7596 for (i = 0; i < MAX_REPLY_QUEUES; i++)
7597 h->q[i] = (u8) i;
7598
Hannes Reineckeeee0f032014-01-15 13:30:53 +01007599 if (h->intr_mode == PERF_MODE_INT && h->msix_vector > 0) {
Matt Gates254f7962012-05-01 11:43:06 -05007600 /* If performant mode and MSI-X, use multiple reply queues */
Robert Elliotta4e17fc2015-01-23 16:41:51 -06007601 for (i = 0; i < h->msix_vector; i++) {
Robert Elliott8b470042015-04-23 09:34:58 -05007602 sprintf(h->intrname[i], "%s-msix%d", h->devname, i);
Matt Gates254f7962012-05-01 11:43:06 -05007603 rc = request_irq(h->intr[i], msixhandler,
Robert Elliott8b470042015-04-23 09:34:58 -05007604 0, h->intrname[i],
Matt Gates254f7962012-05-01 11:43:06 -05007605 &h->q[i]);
Robert Elliotta4e17fc2015-01-23 16:41:51 -06007606 if (rc) {
7607 int j;
7608
7609 dev_err(&h->pdev->dev,
7610 "failed to get irq %d for %s\n",
7611 h->intr[i], h->devname);
7612 for (j = 0; j < i; j++) {
7613 free_irq(h->intr[j], &h->q[j]);
7614 h->q[j] = 0;
7615 }
7616 for (; j < MAX_REPLY_QUEUES; j++)
7617 h->q[j] = 0;
7618 return rc;
7619 }
7620 }
Stephen M. Cameron41b3cf02014-05-29 10:53:13 -05007621 hpsa_irq_affinity_hints(h);
Matt Gates254f7962012-05-01 11:43:06 -05007622 } else {
7623 /* Use single reply pool */
Hannes Reineckeeee0f032014-01-15 13:30:53 +01007624 if (h->msix_vector > 0 || h->msi_vector) {
Robert Elliott8b470042015-04-23 09:34:58 -05007625 if (h->msix_vector)
7626 sprintf(h->intrname[h->intr_mode],
7627 "%s-msix", h->devname);
7628 else
7629 sprintf(h->intrname[h->intr_mode],
7630 "%s-msi", h->devname);
Matt Gates254f7962012-05-01 11:43:06 -05007631 rc = request_irq(h->intr[h->intr_mode],
Robert Elliott8b470042015-04-23 09:34:58 -05007632 msixhandler, 0,
7633 h->intrname[h->intr_mode],
Matt Gates254f7962012-05-01 11:43:06 -05007634 &h->q[h->intr_mode]);
7635 } else {
Robert Elliott8b470042015-04-23 09:34:58 -05007636 sprintf(h->intrname[h->intr_mode],
7637 "%s-intx", h->devname);
Matt Gates254f7962012-05-01 11:43:06 -05007638 rc = request_irq(h->intr[h->intr_mode],
Robert Elliott8b470042015-04-23 09:34:58 -05007639 intxhandler, IRQF_SHARED,
7640 h->intrname[h->intr_mode],
Matt Gates254f7962012-05-01 11:43:06 -05007641 &h->q[h->intr_mode]);
7642 }
Robert Elliott105a3db2015-04-23 09:33:48 -05007643 irq_set_affinity_hint(h->intr[h->intr_mode], NULL);
Matt Gates254f7962012-05-01 11:43:06 -05007644 }
Stephen M. Cameron0ae01a32011-05-03 14:59:25 -05007645 if (rc) {
Robert Elliott195f2c62015-04-23 09:33:17 -05007646 dev_err(&h->pdev->dev, "failed to get irq %d for %s\n",
Stephen M. Cameron0ae01a32011-05-03 14:59:25 -05007647 h->intr[h->intr_mode], h->devname);
Robert Elliott195f2c62015-04-23 09:33:17 -05007648 hpsa_free_irqs(h);
Stephen M. Cameron0ae01a32011-05-03 14:59:25 -05007649 return -ENODEV;
7650 }
7651 return 0;
7652}
7653
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08007654static int hpsa_kdump_soft_reset(struct ctlr_info *h)
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05007655{
Robert Elliott39c53f52015-04-23 09:35:14 -05007656 int rc;
Robert Elliottbf43caf2015-04-23 09:33:38 -05007657 hpsa_send_host_reset(h, RAID_CTLR_LUNID, HPSA_RESET_TYPE_CONTROLLER);
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05007658
7659 dev_info(&h->pdev->dev, "Waiting for board to soft reset.\n");
Robert Elliott39c53f52015-04-23 09:35:14 -05007660 rc = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_NOT_READY);
7661 if (rc) {
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05007662 dev_warn(&h->pdev->dev, "Soft reset had no effect.\n");
Robert Elliott39c53f52015-04-23 09:35:14 -05007663 return rc;
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05007664 }
7665
7666 dev_info(&h->pdev->dev, "Board reset, awaiting READY status.\n");
Robert Elliott39c53f52015-04-23 09:35:14 -05007667 rc = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY);
7668 if (rc) {
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05007669 dev_warn(&h->pdev->dev, "Board failed to become ready "
7670 "after soft reset.\n");
Robert Elliott39c53f52015-04-23 09:35:14 -05007671 return rc;
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05007672 }
7673
7674 return 0;
7675}
7676
Stephen M. Cameron072b0512014-05-29 10:53:07 -05007677static void hpsa_free_reply_queues(struct ctlr_info *h)
7678{
7679 int i;
7680
7681 for (i = 0; i < h->nreply_queues; i++) {
7682 if (!h->reply_queue[i].head)
7683 continue;
Robert Elliott1fb7c982015-04-23 09:33:22 -05007684 pci_free_consistent(h->pdev,
7685 h->reply_queue_size,
7686 h->reply_queue[i].head,
7687 h->reply_queue[i].busaddr);
Stephen M. Cameron072b0512014-05-29 10:53:07 -05007688 h->reply_queue[i].head = NULL;
7689 h->reply_queue[i].busaddr = 0;
7690 }
Robert Elliott105a3db2015-04-23 09:33:48 -05007691 h->reply_queue_size = 0;
Stephen M. Cameron072b0512014-05-29 10:53:07 -05007692}
7693
Stephen M. Cameron0097f0f2012-05-01 11:43:21 -05007694static void hpsa_undo_allocations_after_kdump_soft_reset(struct ctlr_info *h)
7695{
Robert Elliott105a3db2015-04-23 09:33:48 -05007696 hpsa_free_performant_mode(h); /* init_one 7 */
7697 hpsa_free_sg_chain_blocks(h); /* init_one 6 */
7698 hpsa_free_cmd_pool(h); /* init_one 5 */
7699 hpsa_free_irqs(h); /* init_one 4 */
Robert Elliott2946e822015-04-23 09:35:09 -05007700 scsi_host_put(h->scsi_host); /* init_one 3 */
7701 h->scsi_host = NULL; /* init_one 3 */
7702 hpsa_free_pci_init(h); /* init_one 2_5 */
Robert Elliott9ecd9532015-04-23 09:34:43 -05007703 free_percpu(h->lockup_detected); /* init_one 2 */
7704 h->lockup_detected = NULL; /* init_one 2 */
7705 if (h->resubmit_wq) {
7706 destroy_workqueue(h->resubmit_wq); /* init_one 1 */
7707 h->resubmit_wq = NULL;
7708 }
7709 if (h->rescan_ctlr_wq) {
7710 destroy_workqueue(h->rescan_ctlr_wq);
7711 h->rescan_ctlr_wq = NULL;
7712 }
Robert Elliott105a3db2015-04-23 09:33:48 -05007713 kfree(h); /* init_one 1 */
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05007714}
7715
Stephen M. Camerona0c12412011-10-26 16:22:04 -05007716/* Called when controller lockup detected. */
Don Bracef2405db2015-01-23 16:43:09 -06007717static void fail_all_outstanding_cmds(struct ctlr_info *h)
Stephen M. Camerona0c12412011-10-26 16:22:04 -05007718{
Webb Scales281a7fd2015-01-23 16:43:35 -06007719 int i, refcount;
7720 struct CommandList *c;
Webb Scales25163bd2015-04-23 09:32:00 -05007721 int failcount = 0;
Stephen M. Camerona0c12412011-10-26 16:22:04 -05007722
Don Brace080ef1c2015-01-23 16:43:25 -06007723 flush_workqueue(h->resubmit_wq); /* ensure all cmds are fully built */
Don Bracef2405db2015-01-23 16:43:09 -06007724 for (i = 0; i < h->nr_cmds; i++) {
Don Bracef2405db2015-01-23 16:43:09 -06007725 c = h->cmd_pool + i;
Webb Scales281a7fd2015-01-23 16:43:35 -06007726 refcount = atomic_inc_return(&c->refcount);
7727 if (refcount > 1) {
Webb Scales25163bd2015-04-23 09:32:00 -05007728 c->err_info->CommandStatus = CMD_CTLR_LOCKUP;
Webb Scales281a7fd2015-01-23 16:43:35 -06007729 finish_cmd(c);
Stephen Cameron433b5f42015-04-23 09:32:11 -05007730 atomic_dec(&h->commands_outstanding);
Webb Scales25163bd2015-04-23 09:32:00 -05007731 failcount++;
Webb Scales281a7fd2015-01-23 16:43:35 -06007732 }
7733 cmd_free(h, c);
Stephen M. Camerona0c12412011-10-26 16:22:04 -05007734 }
Webb Scales25163bd2015-04-23 09:32:00 -05007735 dev_warn(&h->pdev->dev,
7736 "failed %d commands in fail_all\n", failcount);
Stephen M. Camerona0c12412011-10-26 16:22:04 -05007737}
7738
Stephen M. Cameron094963d2014-05-29 10:53:18 -05007739static void set_lockup_detected_for_all_cpus(struct ctlr_info *h, u32 value)
7740{
Rusty Russellc8ed0012015-03-05 10:49:19 +10307741 int cpu;
Stephen M. Cameron094963d2014-05-29 10:53:18 -05007742
Rusty Russellc8ed0012015-03-05 10:49:19 +10307743 for_each_online_cpu(cpu) {
Stephen M. Cameron094963d2014-05-29 10:53:18 -05007744 u32 *lockup_detected;
7745 lockup_detected = per_cpu_ptr(h->lockup_detected, cpu);
7746 *lockup_detected = value;
Stephen M. Cameron094963d2014-05-29 10:53:18 -05007747 }
7748 wmb(); /* be sure the per-cpu variables are out to memory */
7749}
7750
Stephen M. Camerona0c12412011-10-26 16:22:04 -05007751static void controller_lockup_detected(struct ctlr_info *h)
7752{
7753 unsigned long flags;
Stephen M. Cameron094963d2014-05-29 10:53:18 -05007754 u32 lockup_detected;
Stephen M. Camerona0c12412011-10-26 16:22:04 -05007755
Stephen M. Camerona0c12412011-10-26 16:22:04 -05007756 h->access.set_intr_mask(h, HPSA_INTR_OFF);
7757 spin_lock_irqsave(&h->lock, flags);
Stephen M. Cameron094963d2014-05-29 10:53:18 -05007758 lockup_detected = readl(h->vaddr + SA5_SCRATCHPAD_OFFSET);
7759 if (!lockup_detected) {
7760 /* no heartbeat, but controller gave us a zero. */
7761 dev_warn(&h->pdev->dev,
Webb Scales25163bd2015-04-23 09:32:00 -05007762 "lockup detected after %d but scratchpad register is zero\n",
7763 h->heartbeat_sample_interval / HZ);
Stephen M. Cameron094963d2014-05-29 10:53:18 -05007764 lockup_detected = 0xffffffff;
7765 }
7766 set_lockup_detected_for_all_cpus(h, lockup_detected);
Stephen M. Camerona0c12412011-10-26 16:22:04 -05007767 spin_unlock_irqrestore(&h->lock, flags);
Webb Scales25163bd2015-04-23 09:32:00 -05007768 dev_warn(&h->pdev->dev, "Controller lockup detected: 0x%08x after %d\n",
7769 lockup_detected, h->heartbeat_sample_interval / HZ);
Stephen M. Camerona0c12412011-10-26 16:22:04 -05007770 pci_disable_device(h->pdev);
Don Bracef2405db2015-01-23 16:43:09 -06007771 fail_all_outstanding_cmds(h);
Stephen M. Camerona0c12412011-10-26 16:22:04 -05007772}
7773
Webb Scales25163bd2015-04-23 09:32:00 -05007774static int detect_controller_lockup(struct ctlr_info *h)
Stephen M. Camerona0c12412011-10-26 16:22:04 -05007775{
7776 u64 now;
7777 u32 heartbeat;
7778 unsigned long flags;
7779
Stephen M. Camerona0c12412011-10-26 16:22:04 -05007780 now = get_jiffies_64();
7781 /* If we've received an interrupt recently, we're ok. */
7782 if (time_after64(h->last_intr_timestamp +
Stephen M. Camerone85c5972012-05-01 11:43:42 -05007783 (h->heartbeat_sample_interval), now))
Webb Scales25163bd2015-04-23 09:32:00 -05007784 return false;
Stephen M. Camerona0c12412011-10-26 16:22:04 -05007785
7786 /*
7787 * If we've already checked the heartbeat recently, we're ok.
7788 * This could happen if someone sends us a signal. We
7789 * otherwise don't care about signals in this thread.
7790 */
7791 if (time_after64(h->last_heartbeat_timestamp +
Stephen M. Camerone85c5972012-05-01 11:43:42 -05007792 (h->heartbeat_sample_interval), now))
Webb Scales25163bd2015-04-23 09:32:00 -05007793 return false;
Stephen M. Camerona0c12412011-10-26 16:22:04 -05007794
7795 /* If heartbeat has not changed since we last looked, we're not ok. */
7796 spin_lock_irqsave(&h->lock, flags);
7797 heartbeat = readl(&h->cfgtable->HeartBeat);
7798 spin_unlock_irqrestore(&h->lock, flags);
7799 if (h->last_heartbeat == heartbeat) {
7800 controller_lockup_detected(h);
Webb Scales25163bd2015-04-23 09:32:00 -05007801 return true;
Stephen M. Camerona0c12412011-10-26 16:22:04 -05007802 }
7803
7804 /* We're ok. */
7805 h->last_heartbeat = heartbeat;
7806 h->last_heartbeat_timestamp = now;
Webb Scales25163bd2015-04-23 09:32:00 -05007807 return false;
Stephen M. Camerona0c12412011-10-26 16:22:04 -05007808}
7809
Stephen M. Cameron98465902014-02-21 16:25:00 -06007810static void hpsa_ack_ctlr_events(struct ctlr_info *h)
Stephen M. Cameron76438d02014-02-18 13:55:43 -06007811{
7812 int i;
7813 char *event_type;
7814
Stephen Camerone4aa3e62015-01-23 16:44:07 -06007815 if (!(h->fw_support & MISC_FW_EVENT_NOTIFY))
7816 return;
7817
Stephen M. Cameron76438d02014-02-18 13:55:43 -06007818 /* Ask the controller to clear the events we're handling. */
Stephen M. Cameron1f7cee82014-02-18 13:56:09 -06007819 if ((h->transMethod & (CFGTBL_Trans_io_accel1
7820 | CFGTBL_Trans_io_accel2)) &&
Stephen M. Cameron76438d02014-02-18 13:55:43 -06007821 (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_STATE_CHANGE ||
7822 h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_CONFIG_CHANGE)) {
7823
7824 if (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_STATE_CHANGE)
7825 event_type = "state change";
7826 if (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_CONFIG_CHANGE)
7827 event_type = "configuration change";
7828 /* Stop sending new RAID offload reqs via the IO accelerator */
7829 scsi_block_requests(h->scsi_host);
7830 for (i = 0; i < h->ndevices; i++)
7831 h->dev[i]->offload_enabled = 0;
Stephen M. Cameron23100dd2014-02-18 13:57:37 -06007832 hpsa_drain_accel_commands(h);
Stephen M. Cameron76438d02014-02-18 13:55:43 -06007833 /* Set 'accelerator path config change' bit */
7834 dev_warn(&h->pdev->dev,
7835 "Acknowledging event: 0x%08x (HP SSD Smart Path %s)\n",
7836 h->events, event_type);
7837 writel(h->events, &(h->cfgtable->clear_event_notify));
7838 /* Set the "clear event notify field update" bit 6 */
7839 writel(DOORBELL_CLEAR_EVENTS, h->vaddr + SA5_DOORBELL);
7840 /* Wait until ctlr clears 'clear event notify field', bit 6 */
7841 hpsa_wait_for_clear_event_notify_ack(h);
7842 scsi_unblock_requests(h->scsi_host);
7843 } else {
7844 /* Acknowledge controller notification events. */
7845 writel(h->events, &(h->cfgtable->clear_event_notify));
7846 writel(DOORBELL_CLEAR_EVENTS, h->vaddr + SA5_DOORBELL);
7847 hpsa_wait_for_clear_event_notify_ack(h);
7848#if 0
7849 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
7850 hpsa_wait_for_mode_change_ack(h);
7851#endif
7852 }
Stephen M. Cameron98465902014-02-21 16:25:00 -06007853 return;
Stephen M. Cameron76438d02014-02-18 13:55:43 -06007854}
7855
7856/* Check a register on the controller to see if there are configuration
7857 * changes (added/changed/removed logical drives, etc.) which mean that
Scott Teele863d682014-02-18 13:57:05 -06007858 * we should rescan the controller for devices.
7859 * Also check flag for driver-initiated rescan.
Stephen M. Cameron76438d02014-02-18 13:55:43 -06007860 */
Stephen M. Cameron98465902014-02-21 16:25:00 -06007861static int hpsa_ctlr_needs_rescan(struct ctlr_info *h)
Stephen M. Cameron76438d02014-02-18 13:55:43 -06007862{
7863 if (!(h->fw_support & MISC_FW_EVENT_NOTIFY))
Stephen M. Cameron98465902014-02-21 16:25:00 -06007864 return 0;
Stephen M. Cameron76438d02014-02-18 13:55:43 -06007865
7866 h->events = readl(&(h->cfgtable->event_notify));
Stephen M. Cameron98465902014-02-21 16:25:00 -06007867 return h->events & RESCAN_REQUIRED_EVENT_BITS;
Stephen M. Cameron76438d02014-02-18 13:55:43 -06007868}
7869
Stephen M. Cameron98465902014-02-21 16:25:00 -06007870/*
7871 * Check if any of the offline devices have become ready
7872 */
7873static int hpsa_offline_devices_ready(struct ctlr_info *h)
7874{
7875 unsigned long flags;
7876 struct offline_device_entry *d;
7877 struct list_head *this, *tmp;
7878
7879 spin_lock_irqsave(&h->offline_device_lock, flags);
7880 list_for_each_safe(this, tmp, &h->offline_device_list) {
7881 d = list_entry(this, struct offline_device_entry,
7882 offline_list);
7883 spin_unlock_irqrestore(&h->offline_device_lock, flags);
Stephen M. Camerond1fea472014-07-03 10:17:58 -05007884 if (!hpsa_volume_offline(h, d->scsi3addr)) {
7885 spin_lock_irqsave(&h->offline_device_lock, flags);
7886 list_del(&d->offline_list);
7887 spin_unlock_irqrestore(&h->offline_device_lock, flags);
Stephen M. Cameron98465902014-02-21 16:25:00 -06007888 return 1;
Stephen M. Camerond1fea472014-07-03 10:17:58 -05007889 }
Stephen M. Cameron98465902014-02-21 16:25:00 -06007890 spin_lock_irqsave(&h->offline_device_lock, flags);
7891 }
7892 spin_unlock_irqrestore(&h->offline_device_lock, flags);
7893 return 0;
7894}
7895
Don Brace6636e7f2015-01-23 16:45:17 -06007896static void hpsa_rescan_ctlr_worker(struct work_struct *work)
Stephen M. Camerona0c12412011-10-26 16:22:04 -05007897{
7898 unsigned long flags;
Stephen M. Cameron8a98db732013-12-04 17:10:07 -06007899 struct ctlr_info *h = container_of(to_delayed_work(work),
Don Brace6636e7f2015-01-23 16:45:17 -06007900 struct ctlr_info, rescan_ctlr_work);
7901
7902
7903 if (h->remove_in_progress)
Stephen M. Cameron8a98db732013-12-04 17:10:07 -06007904 return;
Stephen M. Cameron98465902014-02-21 16:25:00 -06007905
7906 if (hpsa_ctlr_needs_rescan(h) || hpsa_offline_devices_ready(h)) {
7907 scsi_host_get(h->scsi_host);
Stephen M. Cameron98465902014-02-21 16:25:00 -06007908 hpsa_ack_ctlr_events(h);
7909 hpsa_scan_start(h->scsi_host);
7910 scsi_host_put(h->scsi_host);
7911 }
Stephen M. Cameron8a98db732013-12-04 17:10:07 -06007912 spin_lock_irqsave(&h->lock, flags);
Don Brace6636e7f2015-01-23 16:45:17 -06007913 if (!h->remove_in_progress)
7914 queue_delayed_work(h->rescan_ctlr_wq, &h->rescan_ctlr_work,
Stephen M. Cameron8a98db732013-12-04 17:10:07 -06007915 h->heartbeat_sample_interval);
7916 spin_unlock_irqrestore(&h->lock, flags);
Stephen M. Camerona0c12412011-10-26 16:22:04 -05007917}
7918
Don Brace6636e7f2015-01-23 16:45:17 -06007919static void hpsa_monitor_ctlr_worker(struct work_struct *work)
7920{
7921 unsigned long flags;
7922 struct ctlr_info *h = container_of(to_delayed_work(work),
7923 struct ctlr_info, monitor_ctlr_work);
7924
7925 detect_controller_lockup(h);
7926 if (lockup_detected(h))
7927 return;
7928
7929 spin_lock_irqsave(&h->lock, flags);
7930 if (!h->remove_in_progress)
7931 schedule_delayed_work(&h->monitor_ctlr_work,
7932 h->heartbeat_sample_interval);
7933 spin_unlock_irqrestore(&h->lock, flags);
7934}
7935
7936static struct workqueue_struct *hpsa_create_controller_wq(struct ctlr_info *h,
7937 char *name)
7938{
7939 struct workqueue_struct *wq = NULL;
Don Brace6636e7f2015-01-23 16:45:17 -06007940
Don Brace397ea9c2015-02-06 17:44:15 -06007941 wq = alloc_ordered_workqueue("%s_%d_hpsa", 0, name, h->ctlr);
Don Brace6636e7f2015-01-23 16:45:17 -06007942 if (!wq)
7943 dev_err(&h->pdev->dev, "failed to create %s workqueue\n", name);
7944
7945 return wq;
7946}
7947
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08007948static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007949{
Stephen M. Cameron4c2a8c42010-06-16 13:51:35 -05007950 int dac, rc;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007951 struct ctlr_info *h;
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05007952 int try_soft_reset = 0;
7953 unsigned long flags;
Tomas Henzl6b6c1cd2015-04-02 15:25:54 +02007954 u32 board_id;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007955
7956 if (number_of_controllers == 0)
7957 printk(KERN_INFO DRIVER_NAME "\n");
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007958
Tomas Henzl6b6c1cd2015-04-02 15:25:54 +02007959 rc = hpsa_lookup_board_id(pdev, &board_id);
7960 if (rc < 0) {
7961 dev_warn(&pdev->dev, "Board ID not found\n");
7962 return rc;
7963 }
7964
7965 rc = hpsa_init_reset_devices(pdev, board_id);
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05007966 if (rc) {
7967 if (rc != -ENOTSUPP)
7968 return rc;
7969 /* If the reset fails in a particular way (it has no way to do
7970 * a proper hard reset, so returns -ENOTSUPP) we can try to do
7971 * a soft reset once we get the controller configured up to the
7972 * point that it can accept a command.
7973 */
7974 try_soft_reset = 1;
7975 rc = 0;
7976 }
7977
7978reinit_after_soft_reset:
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007979
Don Brace303932f2010-02-04 08:42:40 -06007980 /* Command structures must be aligned on a 32-byte boundary because
7981 * the 5 lower bits of the address are used by the hardware. and by
7982 * the driver. See comments in hpsa.h for more info.
7983 */
Don Brace303932f2010-02-04 08:42:40 -06007984 BUILD_BUG_ON(sizeof(struct CommandList) % COMMANDLIST_ALIGNMENT);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007985 h = kzalloc(sizeof(*h), GFP_KERNEL);
Robert Elliott105a3db2015-04-23 09:33:48 -05007986 if (!h) {
7987 dev_err(&pdev->dev, "Failed to allocate controller head\n");
Stephen M. Cameronecd9aad2010-02-04 08:41:59 -06007988 return -ENOMEM;
Robert Elliott105a3db2015-04-23 09:33:48 -05007989 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08007990
Stephen M. Cameron55c06c72010-05-27 15:12:46 -05007991 h->pdev = pdev;
Robert Elliott105a3db2015-04-23 09:33:48 -05007992
Stephen M. Camerona9a3a272011-02-15 15:32:53 -06007993 h->intr_mode = hpsa_simple_mode ? SIMPLE_MODE_INT : PERF_MODE_INT;
Stephen M. Cameron98465902014-02-21 16:25:00 -06007994 INIT_LIST_HEAD(&h->offline_device_list);
Stephen M. Cameron6eaf46f2011-01-06 14:48:24 -06007995 spin_lock_init(&h->lock);
Stephen M. Cameron98465902014-02-21 16:25:00 -06007996 spin_lock_init(&h->offline_device_lock);
Stephen M. Cameron6eaf46f2011-01-06 14:48:24 -06007997 spin_lock_init(&h->scan_lock);
Don Brace34f0c622015-01-23 16:43:46 -06007998 atomic_set(&h->passthru_cmds_avail, HPSA_MAX_CONCURRENT_PASSTHRUS);
Stephen Cameron9b5c48c2015-04-23 09:32:06 -05007999 atomic_set(&h->abort_cmds_available, HPSA_CMDS_RESERVED_FOR_ABORTS);
Stephen M. Cameron094963d2014-05-29 10:53:18 -05008000
8001 /* Allocate and clear per-cpu variable lockup_detected */
8002 h->lockup_detected = alloc_percpu(u32);
Stephen M. Cameron2a5ac322014-07-03 10:18:08 -05008003 if (!h->lockup_detected) {
Robert Elliott105a3db2015-04-23 09:33:48 -05008004 dev_err(&h->pdev->dev, "Failed to allocate lockup detector\n");
Stephen M. Cameron2a5ac322014-07-03 10:18:08 -05008005 rc = -ENOMEM;
Robert Elliott2efa5922015-04-23 09:34:53 -05008006 goto clean1; /* aer/h */
Stephen M. Cameron2a5ac322014-07-03 10:18:08 -05008007 }
Stephen M. Cameron094963d2014-05-29 10:53:18 -05008008 set_lockup_detected_for_all_cpus(h, 0);
8009
Stephen M. Cameron55c06c72010-05-27 15:12:46 -05008010 rc = hpsa_pci_init(h);
Robert Elliott105a3db2015-04-23 09:33:48 -05008011 if (rc)
Robert Elliott2946e822015-04-23 09:35:09 -05008012 goto clean2; /* lu, aer/h */
Stephen M. Cameronedd16362009-12-08 14:09:11 -08008013
Robert Elliott2946e822015-04-23 09:35:09 -05008014 /* relies on h-> settings made by hpsa_pci_init, including
8015 * interrupt_mode h->intr */
8016 rc = hpsa_scsi_host_alloc(h);
8017 if (rc)
8018 goto clean2_5; /* pci, lu, aer/h */
8019
8020 sprintf(h->devname, HPSA "%d", h->scsi_host->host_no);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08008021 h->ctlr = number_of_controllers;
8022 number_of_controllers++;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08008023
8024 /* configure PCI DMA stuff */
Stephen M. Cameronecd9aad2010-02-04 08:41:59 -06008025 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
8026 if (rc == 0) {
Stephen M. Cameronedd16362009-12-08 14:09:11 -08008027 dac = 1;
Stephen M. Cameronecd9aad2010-02-04 08:41:59 -06008028 } else {
8029 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
8030 if (rc == 0) {
8031 dac = 0;
8032 } else {
8033 dev_err(&pdev->dev, "no suitable DMA available\n");
Robert Elliott2946e822015-04-23 09:35:09 -05008034 goto clean3; /* shost, pci, lu, aer/h */
Stephen M. Cameronecd9aad2010-02-04 08:41:59 -06008035 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08008036 }
8037
8038 /* make sure the board interrupts are off */
8039 h->access.set_intr_mask(h, HPSA_INTR_OFF);
Stephen M. Cameron10f66012010-06-16 13:51:50 -05008040
Robert Elliott105a3db2015-04-23 09:33:48 -05008041 rc = hpsa_request_irqs(h, do_hpsa_intr_msi, do_hpsa_intr_intx);
8042 if (rc)
Robert Elliott2946e822015-04-23 09:35:09 -05008043 goto clean3; /* shost, pci, lu, aer/h */
Robert Elliottd37ffbe2015-04-23 09:32:27 -05008044 rc = hpsa_alloc_cmd_pool(h);
Robert Elliott8947fd12015-01-23 16:42:54 -06008045 if (rc)
Robert Elliott2946e822015-04-23 09:35:09 -05008046 goto clean4; /* irq, shost, pci, lu, aer/h */
Robert Elliott105a3db2015-04-23 09:33:48 -05008047 rc = hpsa_alloc_sg_chain_blocks(h);
8048 if (rc)
Robert Elliott2946e822015-04-23 09:35:09 -05008049 goto clean5; /* cmd, irq, shost, pci, lu, aer/h */
Stephen M. Camerona08a8472010-02-04 08:43:16 -06008050 init_waitqueue_head(&h->scan_wait_queue);
Stephen Cameron9b5c48c2015-04-23 09:32:06 -05008051 init_waitqueue_head(&h->abort_cmd_wait_queue);
Webb Scalesd604f532015-04-23 09:35:22 -05008052 init_waitqueue_head(&h->event_sync_wait_queue);
8053 mutex_init(&h->reset_mutex);
Stephen M. Camerona08a8472010-02-04 08:43:16 -06008054 h->scan_finished = 1; /* no scan currently in progress */
Stephen M. Cameronedd16362009-12-08 14:09:11 -08008055
8056 pci_set_drvdata(pdev, h);
Stephen M. Cameron9a413382011-05-03 14:59:41 -05008057 h->ndevices = 0;
Robert Elliott2946e822015-04-23 09:35:09 -05008058
Stephen M. Cameron9a413382011-05-03 14:59:41 -05008059 spin_lock_init(&h->devlock);
Robert Elliott105a3db2015-04-23 09:33:48 -05008060 rc = hpsa_put_ctlr_into_performant_mode(h);
8061 if (rc)
Robert Elliott2946e822015-04-23 09:35:09 -05008062 goto clean6; /* sg, cmd, irq, shost, pci, lu, aer/h */
8063
8064 /* hook into SCSI subsystem */
8065 rc = hpsa_scsi_add_host(h);
8066 if (rc)
8067 goto clean7; /* perf, sg, cmd, irq, shost, pci, lu, aer/h */
Robert Elliott2efa5922015-04-23 09:34:53 -05008068
8069 /* create the resubmit workqueue */
8070 h->rescan_ctlr_wq = hpsa_create_controller_wq(h, "rescan");
8071 if (!h->rescan_ctlr_wq) {
8072 rc = -ENOMEM;
8073 goto clean7;
8074 }
8075
8076 h->resubmit_wq = hpsa_create_controller_wq(h, "resubmit");
8077 if (!h->resubmit_wq) {
8078 rc = -ENOMEM;
8079 goto clean7; /* aer/h */
8080 }
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05008081
Robert Elliott105a3db2015-04-23 09:33:48 -05008082 /*
8083 * At this point, the controller is ready to take commands.
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05008084 * Now, if reset_devices and the hard reset didn't work, try
8085 * the soft reset and see if that works.
8086 */
8087 if (try_soft_reset) {
8088
8089 /* This is kind of gross. We may or may not get a completion
8090 * from the soft reset command, and if we do, then the value
8091 * from the fifo may or may not be valid. So, we wait 10 secs
8092 * after the reset throwing away any completions we get during
8093 * that time. Unregister the interrupt handler and register
8094 * fake ones to scoop up any residual completions.
8095 */
8096 spin_lock_irqsave(&h->lock, flags);
8097 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8098 spin_unlock_irqrestore(&h->lock, flags);
Robert Elliottec501a12015-01-23 16:41:40 -06008099 hpsa_free_irqs(h);
Robert Elliott9ee61792015-01-23 16:42:32 -06008100 rc = hpsa_request_irqs(h, hpsa_msix_discard_completions,
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05008101 hpsa_intx_discard_completions);
8102 if (rc) {
Robert Elliott9ee61792015-01-23 16:42:32 -06008103 dev_warn(&h->pdev->dev,
8104 "Failed to request_irq after soft reset.\n");
Robert Elliottd4987572015-04-23 09:34:37 -05008105 /*
Robert Elliottb2ef4802015-04-23 09:34:48 -05008106 * cannot goto clean7 or free_irqs will be called
8107 * again. Instead, do its work
8108 */
8109 hpsa_free_performant_mode(h); /* clean7 */
8110 hpsa_free_sg_chain_blocks(h); /* clean6 */
8111 hpsa_free_cmd_pool(h); /* clean5 */
8112 /*
8113 * skip hpsa_free_irqs(h) clean4 since that
8114 * was just called before request_irqs failed
Robert Elliottd4987572015-04-23 09:34:37 -05008115 */
8116 goto clean3;
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05008117 }
8118
8119 rc = hpsa_kdump_soft_reset(h);
8120 if (rc)
8121 /* Neither hard nor soft reset worked, we're hosed. */
Don Brace7ef73232015-07-18 11:12:33 -05008122 goto clean7;
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05008123
8124 dev_info(&h->pdev->dev, "Board READY.\n");
8125 dev_info(&h->pdev->dev,
8126 "Waiting for stale completions to drain.\n");
8127 h->access.set_intr_mask(h, HPSA_INTR_ON);
8128 msleep(10000);
8129 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8130
8131 rc = controller_reset_failed(h->cfgtable);
8132 if (rc)
8133 dev_info(&h->pdev->dev,
8134 "Soft reset appears to have failed.\n");
8135
8136 /* since the controller's reset, we have to go back and re-init
8137 * everything. Easiest to just forget what we've done and do it
8138 * all over again.
8139 */
8140 hpsa_undo_allocations_after_kdump_soft_reset(h);
8141 try_soft_reset = 0;
8142 if (rc)
Robert Elliottb2ef4802015-04-23 09:34:48 -05008143 /* don't goto clean, we already unallocated */
Stephen M. Cameron64670ac2011-05-03 14:59:51 -05008144 return -ENODEV;
8145
8146 goto reinit_after_soft_reset;
8147 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08008148
Robert Elliott105a3db2015-04-23 09:33:48 -05008149 /* Enable Accelerated IO path at driver layer */
8150 h->acciopath_status = 1;
Scott Teelda0697b2014-02-18 13:57:00 -06008151
Scott Teele863d682014-02-18 13:57:05 -06008152
Stephen M. Cameronedd16362009-12-08 14:09:11 -08008153 /* Turn the interrupts on so we can service requests */
8154 h->access.set_intr_mask(h, HPSA_INTR_ON);
8155
Stephen M. Cameron339b2b12010-02-04 08:42:50 -06008156 hpsa_hba_inquiry(h);
Stephen M. Cameron8a98db732013-12-04 17:10:07 -06008157
8158 /* Monitor the controller for firmware lockups */
8159 h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL;
8160 INIT_DELAYED_WORK(&h->monitor_ctlr_work, hpsa_monitor_ctlr_worker);
8161 schedule_delayed_work(&h->monitor_ctlr_work,
8162 h->heartbeat_sample_interval);
Don Brace6636e7f2015-01-23 16:45:17 -06008163 INIT_DELAYED_WORK(&h->rescan_ctlr_work, hpsa_rescan_ctlr_worker);
8164 queue_delayed_work(h->rescan_ctlr_wq, &h->rescan_ctlr_work,
8165 h->heartbeat_sample_interval);
Stephen M. Cameron88bf6d62013-11-01 11:02:25 -05008166 return 0;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08008167
Robert Elliott2946e822015-04-23 09:35:09 -05008168clean7: /* perf, sg, cmd, irq, shost, pci, lu, aer/h */
Robert Elliott105a3db2015-04-23 09:33:48 -05008169 hpsa_free_performant_mode(h);
8170 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8171clean6: /* sg, cmd, irq, pci, lockup, wq/aer/h */
Stephen M. Cameron33a2ffc2010-02-25 14:03:27 -06008172 hpsa_free_sg_chain_blocks(h);
Robert Elliott2946e822015-04-23 09:35:09 -05008173clean5: /* cmd, irq, shost, pci, lu, aer/h */
Stephen M. Cameron2e9d1b32011-05-03 14:59:20 -05008174 hpsa_free_cmd_pool(h);
Robert Elliott2946e822015-04-23 09:35:09 -05008175clean4: /* irq, shost, pci, lu, aer/h */
Robert Elliottec501a12015-01-23 16:41:40 -06008176 hpsa_free_irqs(h);
Robert Elliott2946e822015-04-23 09:35:09 -05008177clean3: /* shost, pci, lu, aer/h */
8178 scsi_host_put(h->scsi_host);
8179 h->scsi_host = NULL;
8180clean2_5: /* pci, lu, aer/h */
Robert Elliott195f2c62015-04-23 09:33:17 -05008181 hpsa_free_pci_init(h);
Robert Elliott2946e822015-04-23 09:35:09 -05008182clean2: /* lu, aer/h */
Robert Elliott105a3db2015-04-23 09:33:48 -05008183 if (h->lockup_detected) {
Stephen M. Cameron094963d2014-05-29 10:53:18 -05008184 free_percpu(h->lockup_detected);
Robert Elliott105a3db2015-04-23 09:33:48 -05008185 h->lockup_detected = NULL;
8186 }
8187clean1: /* wq/aer/h */
8188 if (h->resubmit_wq) {
8189 destroy_workqueue(h->resubmit_wq);
8190 h->resubmit_wq = NULL;
8191 }
8192 if (h->rescan_ctlr_wq) {
8193 destroy_workqueue(h->rescan_ctlr_wq);
8194 h->rescan_ctlr_wq = NULL;
8195 }
Stephen M. Cameronedd16362009-12-08 14:09:11 -08008196 kfree(h);
Stephen M. Cameronecd9aad2010-02-04 08:41:59 -06008197 return rc;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08008198}
8199
8200static void hpsa_flush_cache(struct ctlr_info *h)
8201{
8202 char *flush_buf;
8203 struct CommandList *c;
Webb Scales25163bd2015-04-23 09:32:00 -05008204 int rc;
Stephen M. Cameron702890e2013-09-23 13:33:30 -05008205
Stephen M. Cameron094963d2014-05-29 10:53:18 -05008206 if (unlikely(lockup_detected(h)))
Stephen M. Cameron702890e2013-09-23 13:33:30 -05008207 return;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08008208 flush_buf = kzalloc(4, GFP_KERNEL);
8209 if (!flush_buf)
8210 return;
8211
Stephen Cameron45fcb862015-01-23 16:43:04 -06008212 c = cmd_alloc(h);
Robert Elliottbf43caf2015-04-23 09:33:38 -05008213
Stephen M. Camerona2dac132013-02-20 11:24:41 -06008214 if (fill_cmd(c, HPSA_CACHE_FLUSH, h, flush_buf, 4, 0,
8215 RAID_CTLR_LUNID, TYPE_CMD)) {
8216 goto out;
8217 }
Webb Scales25163bd2015-04-23 09:32:00 -05008218 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
8219 PCI_DMA_TODEVICE, NO_TIMEOUT);
8220 if (rc)
8221 goto out;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08008222 if (c->err_info->CommandStatus != 0)
Stephen M. Camerona2dac132013-02-20 11:24:41 -06008223out:
Stephen M. Cameronedd16362009-12-08 14:09:11 -08008224 dev_warn(&h->pdev->dev,
8225 "error flushing cache on controller\n");
Stephen Cameron45fcb862015-01-23 16:43:04 -06008226 cmd_free(h, c);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08008227 kfree(flush_buf);
8228}
8229
8230static void hpsa_shutdown(struct pci_dev *pdev)
8231{
8232 struct ctlr_info *h;
8233
8234 h = pci_get_drvdata(pdev);
8235 /* Turn board interrupts off and send the flush cache command
8236 * sendcmd will turn off interrupt, and send the flush...
8237 * To write all data in the battery backed cache to disks
8238 */
8239 hpsa_flush_cache(h);
8240 h->access.set_intr_mask(h, HPSA_INTR_OFF);
Robert Elliott105a3db2015-04-23 09:33:48 -05008241 hpsa_free_irqs(h); /* init_one 4 */
Robert Elliottcc64c812015-04-23 09:33:12 -05008242 hpsa_disable_interrupt_mode(h); /* pci_init 2 */
Stephen M. Cameronedd16362009-12-08 14:09:11 -08008243}
8244
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08008245static void hpsa_free_device_info(struct ctlr_info *h)
Stephen M. Cameron55e14e72012-01-19 14:00:42 -06008246{
8247 int i;
8248
Robert Elliott105a3db2015-04-23 09:33:48 -05008249 for (i = 0; i < h->ndevices; i++) {
Stephen M. Cameron55e14e72012-01-19 14:00:42 -06008250 kfree(h->dev[i]);
Robert Elliott105a3db2015-04-23 09:33:48 -05008251 h->dev[i] = NULL;
8252 }
Stephen M. Cameron55e14e72012-01-19 14:00:42 -06008253}
8254
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08008255static void hpsa_remove_one(struct pci_dev *pdev)
Stephen M. Cameronedd16362009-12-08 14:09:11 -08008256{
8257 struct ctlr_info *h;
Stephen M. Cameron8a98db732013-12-04 17:10:07 -06008258 unsigned long flags;
Stephen M. Cameronedd16362009-12-08 14:09:11 -08008259
8260 if (pci_get_drvdata(pdev) == NULL) {
Stephen M. Camerona0c12412011-10-26 16:22:04 -05008261 dev_err(&pdev->dev, "unable to remove device\n");
Stephen M. Cameronedd16362009-12-08 14:09:11 -08008262 return;
8263 }
8264 h = pci_get_drvdata(pdev);
Stephen M. Cameron8a98db732013-12-04 17:10:07 -06008265
8266 /* Get rid of any controller monitoring work items */
8267 spin_lock_irqsave(&h->lock, flags);
8268 h->remove_in_progress = 1;
Stephen M. Cameron8a98db732013-12-04 17:10:07 -06008269 spin_unlock_irqrestore(&h->lock, flags);
Don Brace6636e7f2015-01-23 16:45:17 -06008270 cancel_delayed_work_sync(&h->monitor_ctlr_work);
8271 cancel_delayed_work_sync(&h->rescan_ctlr_work);
8272 destroy_workqueue(h->rescan_ctlr_wq);
8273 destroy_workqueue(h->resubmit_wq);
Robert Elliottcc64c812015-04-23 09:33:12 -05008274
Don Brace2d041302015-07-18 11:13:15 -05008275 /*
8276 * Call before disabling interrupts.
8277 * scsi_remove_host can trigger I/O operations especially
8278 * when multipath is enabled. There can be SYNCHRONIZE CACHE
8279 * operations which cannot complete and will hang the system.
8280 */
8281 if (h->scsi_host)
8282 scsi_remove_host(h->scsi_host); /* init_one 8 */
Robert Elliott105a3db2015-04-23 09:33:48 -05008283 /* includes hpsa_free_irqs - init_one 4 */
Robert Elliott195f2c62015-04-23 09:33:17 -05008284 /* includes hpsa_disable_interrupt_mode - pci_init 2 */
Stephen M. Cameronedd16362009-12-08 14:09:11 -08008285 hpsa_shutdown(pdev);
Robert Elliottcc64c812015-04-23 09:33:12 -05008286
Robert Elliott105a3db2015-04-23 09:33:48 -05008287 hpsa_free_device_info(h); /* scan */
8288
Robert Elliott2946e822015-04-23 09:35:09 -05008289 kfree(h->hba_inquiry_data); /* init_one 10 */
8290 h->hba_inquiry_data = NULL; /* init_one 10 */
Robert Elliott2946e822015-04-23 09:35:09 -05008291 hpsa_free_ioaccel2_sg_chain_blocks(h);
Robert Elliott105a3db2015-04-23 09:33:48 -05008292 hpsa_free_performant_mode(h); /* init_one 7 */
8293 hpsa_free_sg_chain_blocks(h); /* init_one 6 */
8294 hpsa_free_cmd_pool(h); /* init_one 5 */
8295
8296 /* hpsa_free_irqs already called via hpsa_shutdown init_one 4 */
Robert Elliott195f2c62015-04-23 09:33:17 -05008297
Robert Elliott2946e822015-04-23 09:35:09 -05008298 scsi_host_put(h->scsi_host); /* init_one 3 */
8299 h->scsi_host = NULL; /* init_one 3 */
8300
Robert Elliott195f2c62015-04-23 09:33:17 -05008301 /* includes hpsa_disable_interrupt_mode - pci_init 2 */
Robert Elliott2946e822015-04-23 09:35:09 -05008302 hpsa_free_pci_init(h); /* init_one 2.5 */
Robert Elliott195f2c62015-04-23 09:33:17 -05008303
Robert Elliott105a3db2015-04-23 09:33:48 -05008304 free_percpu(h->lockup_detected); /* init_one 2 */
8305 h->lockup_detected = NULL; /* init_one 2 */
8306 /* (void) pci_disable_pcie_error_reporting(pdev); */ /* init_one 1 */
8307 kfree(h); /* init_one 1 */
Stephen M. Cameronedd16362009-12-08 14:09:11 -08008308}
8309
8310static int hpsa_suspend(__attribute__((unused)) struct pci_dev *pdev,
8311 __attribute__((unused)) pm_message_t state)
8312{
8313 return -ENOSYS;
8314}
8315
8316static int hpsa_resume(__attribute__((unused)) struct pci_dev *pdev)
8317{
8318 return -ENOSYS;
8319}
8320
8321static struct pci_driver hpsa_pci_driver = {
Stephen M. Cameronf79cfec2012-01-19 14:00:59 -06008322 .name = HPSA,
Stephen M. Cameronedd16362009-12-08 14:09:11 -08008323 .probe = hpsa_init_one,
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08008324 .remove = hpsa_remove_one,
Stephen M. Cameronedd16362009-12-08 14:09:11 -08008325 .id_table = hpsa_pci_device_id, /* id_table */
8326 .shutdown = hpsa_shutdown,
8327 .suspend = hpsa_suspend,
8328 .resume = hpsa_resume,
8329};
8330
Don Brace303932f2010-02-04 08:42:40 -06008331/* Fill in bucket_map[], given nsgs (the max number of
8332 * scatter gather elements supported) and bucket[],
8333 * which is an array of 8 integers. The bucket[] array
8334 * contains 8 different DMA transfer sizes (in 16
8335 * byte increments) which the controller uses to fetch
8336 * commands. This function fills in bucket_map[], which
8337 * maps a given number of scatter gather elements to one of
8338 * the 8 DMA transfer sizes. The point of it is to allow the
8339 * controller to only do as much DMA as needed to fetch the
8340 * command, with the DMA transfer size encoded in the lower
8341 * bits of the command address.
8342 */
8343static void calc_bucket_map(int bucket[], int num_buckets,
Don Brace2b08b3e2015-01-23 16:41:09 -06008344 int nsgs, int min_blocks, u32 *bucket_map)
Don Brace303932f2010-02-04 08:42:40 -06008345{
8346 int i, j, b, size;
8347
Don Brace303932f2010-02-04 08:42:40 -06008348 /* Note, bucket_map must have nsgs+1 entries. */
8349 for (i = 0; i <= nsgs; i++) {
8350 /* Compute size of a command with i SG entries */
Matt Gatese1f7de02014-02-18 13:55:17 -06008351 size = i + min_blocks;
Don Brace303932f2010-02-04 08:42:40 -06008352 b = num_buckets; /* Assume the biggest bucket */
8353 /* Find the bucket that is just big enough */
Matt Gatese1f7de02014-02-18 13:55:17 -06008354 for (j = 0; j < num_buckets; j++) {
Don Brace303932f2010-02-04 08:42:40 -06008355 if (bucket[j] >= size) {
8356 b = j;
8357 break;
8358 }
8359 }
8360 /* for a command with i SG entries, use bucket b. */
8361 bucket_map[i] = b;
8362 }
8363}
8364
Robert Elliott105a3db2015-04-23 09:33:48 -05008365/*
8366 * return -ENODEV on err, 0 on success (or no action)
8367 * allocates numerous items that must be freed later
8368 */
Robert Elliottc706a792015-01-23 16:45:01 -06008369static int hpsa_enter_performant_mode(struct ctlr_info *h, u32 trans_support)
Don Brace303932f2010-02-04 08:42:40 -06008370{
Stephen M. Cameron6c311b52010-05-27 15:14:19 -05008371 int i;
8372 unsigned long register_value;
Matt Gatese1f7de02014-02-18 13:55:17 -06008373 unsigned long transMethod = CFGTBL_Trans_Performant |
8374 (trans_support & CFGTBL_Trans_use_short_tags) |
Stephen M. Cameronb9af4932014-02-18 13:56:29 -06008375 CFGTBL_Trans_enable_directed_msix |
8376 (trans_support & (CFGTBL_Trans_io_accel1 |
8377 CFGTBL_Trans_io_accel2));
Matt Gatese1f7de02014-02-18 13:55:17 -06008378 struct access_method access = SA5_performant_access;
Stephen M. Camerondef342b2010-05-27 15:14:39 -05008379
8380 /* This is a bit complicated. There are 8 registers on
8381 * the controller which we write to to tell it 8 different
8382 * sizes of commands which there may be. It's a way of
8383 * reducing the DMA done to fetch each command. Encoded into
8384 * each command's tag are 3 bits which communicate to the controller
8385 * which of the eight sizes that command fits within. The size of
8386 * each command depends on how many scatter gather entries there are.
8387 * Each SG entry requires 16 bytes. The eight registers are programmed
8388 * with the number of 16-byte blocks a command of that size requires.
8389 * The smallest command possible requires 5 such 16 byte blocks.
Stephen M. Camerond66ae082012-01-19 14:00:48 -06008390 * the largest command possible requires SG_ENTRIES_IN_CMD + 4 16-byte
Stephen M. Camerondef342b2010-05-27 15:14:39 -05008391 * blocks. Note, this only extends to the SG entries contained
8392 * within the command block, and does not extend to chained blocks
8393 * of SG elements. bft[] contains the eight values we write to
8394 * the registers. They are not evenly distributed, but have more
8395 * sizes for small commands, and fewer sizes for larger commands.
8396 */
Stephen M. Camerond66ae082012-01-19 14:00:48 -06008397 int bft[8] = {5, 6, 8, 10, 12, 20, 28, SG_ENTRIES_IN_CMD + 4};
Stephen M. Cameronb9af4932014-02-18 13:56:29 -06008398#define MIN_IOACCEL2_BFT_ENTRY 5
8399#define HPSA_IOACCEL2_HEADER_SZ 4
8400 int bft2[16] = {MIN_IOACCEL2_BFT_ENTRY, 6, 7, 8, 9, 10, 11, 12,
8401 13, 14, 15, 16, 17, 18, 19,
8402 HPSA_IOACCEL2_HEADER_SZ + IOACCEL2_MAXSGENTRIES};
8403 BUILD_BUG_ON(ARRAY_SIZE(bft2) != 16);
8404 BUILD_BUG_ON(ARRAY_SIZE(bft) != 8);
8405 BUILD_BUG_ON(offsetof(struct io_accel2_cmd, sg) >
8406 16 * MIN_IOACCEL2_BFT_ENTRY);
8407 BUILD_BUG_ON(sizeof(struct ioaccel2_sg_element) != 16);
Stephen M. Camerond66ae082012-01-19 14:00:48 -06008408 BUILD_BUG_ON(28 > SG_ENTRIES_IN_CMD + 4);
Don Brace303932f2010-02-04 08:42:40 -06008409 /* 5 = 1 s/g entry or 4k
8410 * 6 = 2 s/g entry or 8k
8411 * 8 = 4 s/g entry or 16k
8412 * 10 = 6 s/g entry or 24k
8413 */
Don Brace303932f2010-02-04 08:42:40 -06008414
Stephen M. Cameronb3a52e72014-05-29 10:53:23 -05008415 /* If the controller supports either ioaccel method then
8416 * we can also use the RAID stack submit path that does not
8417 * perform the superfluous readl() after each command submission.
8418 */
8419 if (trans_support & (CFGTBL_Trans_io_accel1 | CFGTBL_Trans_io_accel2))
8420 access = SA5_performant_access_no_read;
8421
Don Brace303932f2010-02-04 08:42:40 -06008422 /* Controller spec: zero out this buffer. */
Stephen M. Cameron072b0512014-05-29 10:53:07 -05008423 for (i = 0; i < h->nreply_queues; i++)
8424 memset(h->reply_queue[i].head, 0, h->reply_queue_size);
Don Brace303932f2010-02-04 08:42:40 -06008425
Stephen M. Camerond66ae082012-01-19 14:00:48 -06008426 bft[7] = SG_ENTRIES_IN_CMD + 4;
8427 calc_bucket_map(bft, ARRAY_SIZE(bft),
Matt Gatese1f7de02014-02-18 13:55:17 -06008428 SG_ENTRIES_IN_CMD, 4, h->blockFetchTable);
Don Brace303932f2010-02-04 08:42:40 -06008429 for (i = 0; i < 8; i++)
8430 writel(bft[i], &h->transtable->BlockFetch[i]);
8431
8432 /* size of controller ring buffer */
8433 writel(h->max_commands, &h->transtable->RepQSize);
Matt Gates254f7962012-05-01 11:43:06 -05008434 writel(h->nreply_queues, &h->transtable->RepQCount);
Don Brace303932f2010-02-04 08:42:40 -06008435 writel(0, &h->transtable->RepQCtrAddrLow32);
8436 writel(0, &h->transtable->RepQCtrAddrHigh32);
Matt Gates254f7962012-05-01 11:43:06 -05008437
8438 for (i = 0; i < h->nreply_queues; i++) {
8439 writel(0, &h->transtable->RepQAddr[i].upper);
Stephen M. Cameron072b0512014-05-29 10:53:07 -05008440 writel(h->reply_queue[i].busaddr,
Matt Gates254f7962012-05-01 11:43:06 -05008441 &h->transtable->RepQAddr[i].lower);
8442 }
8443
Stephen M. Cameronb9af4932014-02-18 13:56:29 -06008444 writel(0, &h->cfgtable->HostWrite.command_pool_addr_hi);
Matt Gatese1f7de02014-02-18 13:55:17 -06008445 writel(transMethod, &(h->cfgtable->HostWrite.TransportRequest));
8446 /*
8447 * enable outbound interrupt coalescing in accelerator mode;
8448 */
8449 if (trans_support & CFGTBL_Trans_io_accel1) {
8450 access = SA5_ioaccel_mode1_access;
8451 writel(10, &h->cfgtable->HostWrite.CoalIntDelay);
8452 writel(4, &h->cfgtable->HostWrite.CoalIntCount);
Scott Teelc3497752014-02-18 13:56:34 -06008453 } else {
8454 if (trans_support & CFGTBL_Trans_io_accel2) {
8455 access = SA5_ioaccel_mode2_access;
8456 writel(10, &h->cfgtable->HostWrite.CoalIntDelay);
8457 writel(4, &h->cfgtable->HostWrite.CoalIntCount);
8458 }
Matt Gatese1f7de02014-02-18 13:55:17 -06008459 }
Don Brace303932f2010-02-04 08:42:40 -06008460 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
Robert Elliottc706a792015-01-23 16:45:01 -06008461 if (hpsa_wait_for_mode_change_ack(h)) {
8462 dev_err(&h->pdev->dev,
8463 "performant mode problem - doorbell timeout\n");
8464 return -ENODEV;
8465 }
Don Brace303932f2010-02-04 08:42:40 -06008466 register_value = readl(&(h->cfgtable->TransportActive));
8467 if (!(register_value & CFGTBL_Trans_Performant)) {
Stephen Cameron050f7142015-01-23 16:42:22 -06008468 dev_err(&h->pdev->dev,
8469 "performant mode problem - transport not active\n");
Robert Elliottc706a792015-01-23 16:45:01 -06008470 return -ENODEV;
Don Brace303932f2010-02-04 08:42:40 -06008471 }
Stephen M. Cameron960a30e2011-02-15 15:33:03 -06008472 /* Change the access methods to the performant access methods */
Matt Gatese1f7de02014-02-18 13:55:17 -06008473 h->access = access;
8474 h->transMethod = transMethod;
8475
Stephen M. Cameronb9af4932014-02-18 13:56:29 -06008476 if (!((trans_support & CFGTBL_Trans_io_accel1) ||
8477 (trans_support & CFGTBL_Trans_io_accel2)))
Robert Elliottc706a792015-01-23 16:45:01 -06008478 return 0;
Matt Gatese1f7de02014-02-18 13:55:17 -06008479
Stephen M. Cameronb9af4932014-02-18 13:56:29 -06008480 if (trans_support & CFGTBL_Trans_io_accel1) {
8481 /* Set up I/O accelerator mode */
8482 for (i = 0; i < h->nreply_queues; i++) {
8483 writel(i, h->vaddr + IOACCEL_MODE1_REPLY_QUEUE_INDEX);
8484 h->reply_queue[i].current_entry =
8485 readl(h->vaddr + IOACCEL_MODE1_PRODUCER_INDEX);
8486 }
8487 bft[7] = h->ioaccel_maxsg + 8;
8488 calc_bucket_map(bft, ARRAY_SIZE(bft), h->ioaccel_maxsg, 8,
8489 h->ioaccel1_blockFetchTable);
8490
8491 /* initialize all reply queue entries to unused */
Stephen M. Cameron072b0512014-05-29 10:53:07 -05008492 for (i = 0; i < h->nreply_queues; i++)
8493 memset(h->reply_queue[i].head,
8494 (u8) IOACCEL_MODE1_REPLY_UNUSED,
8495 h->reply_queue_size);
Stephen M. Cameronb9af4932014-02-18 13:56:29 -06008496
8497 /* set all the constant fields in the accelerator command
8498 * frames once at init time to save CPU cycles later.
8499 */
8500 for (i = 0; i < h->nr_cmds; i++) {
8501 struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[i];
8502
8503 cp->function = IOACCEL1_FUNCTION_SCSIIO;
8504 cp->err_info = (u32) (h->errinfo_pool_dhandle +
8505 (i * sizeof(struct ErrorInfo)));
8506 cp->err_info_len = sizeof(struct ErrorInfo);
8507 cp->sgl_offset = IOACCEL1_SGLOFFSET;
Don Brace2b08b3e2015-01-23 16:41:09 -06008508 cp->host_context_flags =
8509 cpu_to_le16(IOACCEL1_HCFLAGS_CISS_FORMAT);
Stephen M. Cameronb9af4932014-02-18 13:56:29 -06008510 cp->timeout_sec = 0;
8511 cp->ReplyQueue = 0;
Stephen M. Cameron50a0dec2014-11-14 17:26:59 -06008512 cp->tag =
Don Bracef2405db2015-01-23 16:43:09 -06008513 cpu_to_le64((i << DIRECT_LOOKUP_SHIFT));
Stephen M. Cameron50a0dec2014-11-14 17:26:59 -06008514 cp->host_addr =
8515 cpu_to_le64(h->ioaccel_cmd_pool_dhandle +
Stephen M. Cameronb9af4932014-02-18 13:56:29 -06008516 (i * sizeof(struct io_accel1_cmd)));
Stephen M. Cameronb9af4932014-02-18 13:56:29 -06008517 }
8518 } else if (trans_support & CFGTBL_Trans_io_accel2) {
8519 u64 cfg_offset, cfg_base_addr_index;
8520 u32 bft2_offset, cfg_base_addr;
8521 int rc;
8522
8523 rc = hpsa_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr,
8524 &cfg_base_addr_index, &cfg_offset);
8525 BUILD_BUG_ON(offsetof(struct io_accel2_cmd, sg) != 64);
8526 bft2[15] = h->ioaccel_maxsg + HPSA_IOACCEL2_HEADER_SZ;
8527 calc_bucket_map(bft2, ARRAY_SIZE(bft2), h->ioaccel_maxsg,
8528 4, h->ioaccel2_blockFetchTable);
8529 bft2_offset = readl(&h->cfgtable->io_accel_request_size_offset);
8530 BUILD_BUG_ON(offsetof(struct CfgTable,
8531 io_accel_request_size_offset) != 0xb8);
8532 h->ioaccel2_bft2_regs =
8533 remap_pci_mem(pci_resource_start(h->pdev,
8534 cfg_base_addr_index) +
8535 cfg_offset + bft2_offset,
8536 ARRAY_SIZE(bft2) *
8537 sizeof(*h->ioaccel2_bft2_regs));
8538 for (i = 0; i < ARRAY_SIZE(bft2); i++)
8539 writel(bft2[i], &h->ioaccel2_bft2_regs[i]);
Matt Gatese1f7de02014-02-18 13:55:17 -06008540 }
Stephen M. Cameronb9af4932014-02-18 13:56:29 -06008541 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
Robert Elliottc706a792015-01-23 16:45:01 -06008542 if (hpsa_wait_for_mode_change_ack(h)) {
8543 dev_err(&h->pdev->dev,
8544 "performant mode problem - enabling ioaccel mode\n");
8545 return -ENODEV;
8546 }
8547 return 0;
Matt Gatese1f7de02014-02-18 13:55:17 -06008548}
8549
Robert Elliott1fb7c982015-04-23 09:33:22 -05008550/* Free ioaccel1 mode command blocks and block fetch table */
8551static void hpsa_free_ioaccel1_cmd_and_bft(struct ctlr_info *h)
8552{
Robert Elliott105a3db2015-04-23 09:33:48 -05008553 if (h->ioaccel_cmd_pool) {
Robert Elliott1fb7c982015-04-23 09:33:22 -05008554 pci_free_consistent(h->pdev,
8555 h->nr_cmds * sizeof(*h->ioaccel_cmd_pool),
8556 h->ioaccel_cmd_pool,
8557 h->ioaccel_cmd_pool_dhandle);
Robert Elliott105a3db2015-04-23 09:33:48 -05008558 h->ioaccel_cmd_pool = NULL;
8559 h->ioaccel_cmd_pool_dhandle = 0;
8560 }
Robert Elliott1fb7c982015-04-23 09:33:22 -05008561 kfree(h->ioaccel1_blockFetchTable);
Robert Elliott105a3db2015-04-23 09:33:48 -05008562 h->ioaccel1_blockFetchTable = NULL;
Robert Elliott1fb7c982015-04-23 09:33:22 -05008563}
8564
Robert Elliottd37ffbe2015-04-23 09:32:27 -05008565/* Allocate ioaccel1 mode command blocks and block fetch table */
8566static int hpsa_alloc_ioaccel1_cmd_and_bft(struct ctlr_info *h)
Matt Gatese1f7de02014-02-18 13:55:17 -06008567{
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06008568 h->ioaccel_maxsg =
8569 readl(&(h->cfgtable->io_accel_max_embedded_sg_count));
8570 if (h->ioaccel_maxsg > IOACCEL1_MAXSGENTRIES)
8571 h->ioaccel_maxsg = IOACCEL1_MAXSGENTRIES;
8572
Matt Gatese1f7de02014-02-18 13:55:17 -06008573 /* Command structures must be aligned on a 128-byte boundary
8574 * because the 7 lower bits of the address are used by the
8575 * hardware.
8576 */
Matt Gatese1f7de02014-02-18 13:55:17 -06008577 BUILD_BUG_ON(sizeof(struct io_accel1_cmd) %
8578 IOACCEL1_COMMANDLIST_ALIGNMENT);
8579 h->ioaccel_cmd_pool =
8580 pci_alloc_consistent(h->pdev,
8581 h->nr_cmds * sizeof(*h->ioaccel_cmd_pool),
8582 &(h->ioaccel_cmd_pool_dhandle));
8583
8584 h->ioaccel1_blockFetchTable =
Stephen M. Cameron283b4a92014-02-18 13:55:33 -06008585 kmalloc(((h->ioaccel_maxsg + 1) *
Matt Gatese1f7de02014-02-18 13:55:17 -06008586 sizeof(u32)), GFP_KERNEL);
8587
8588 if ((h->ioaccel_cmd_pool == NULL) ||
8589 (h->ioaccel1_blockFetchTable == NULL))
8590 goto clean_up;
8591
8592 memset(h->ioaccel_cmd_pool, 0,
8593 h->nr_cmds * sizeof(*h->ioaccel_cmd_pool));
8594 return 0;
8595
8596clean_up:
Robert Elliott1fb7c982015-04-23 09:33:22 -05008597 hpsa_free_ioaccel1_cmd_and_bft(h);
Robert Elliott2dd02d72015-04-23 09:33:43 -05008598 return -ENOMEM;
Stephen M. Cameron6c311b52010-05-27 15:14:19 -05008599}
8600
Robert Elliott1fb7c982015-04-23 09:33:22 -05008601/* Free ioaccel2 mode command blocks and block fetch table */
8602static void hpsa_free_ioaccel2_cmd_and_bft(struct ctlr_info *h)
8603{
Webb Scalesd9a729f2015-04-23 09:33:27 -05008604 hpsa_free_ioaccel2_sg_chain_blocks(h);
8605
Robert Elliott105a3db2015-04-23 09:33:48 -05008606 if (h->ioaccel2_cmd_pool) {
Robert Elliott1fb7c982015-04-23 09:33:22 -05008607 pci_free_consistent(h->pdev,
8608 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool),
8609 h->ioaccel2_cmd_pool,
8610 h->ioaccel2_cmd_pool_dhandle);
Robert Elliott105a3db2015-04-23 09:33:48 -05008611 h->ioaccel2_cmd_pool = NULL;
8612 h->ioaccel2_cmd_pool_dhandle = 0;
8613 }
Robert Elliott1fb7c982015-04-23 09:33:22 -05008614 kfree(h->ioaccel2_blockFetchTable);
Robert Elliott105a3db2015-04-23 09:33:48 -05008615 h->ioaccel2_blockFetchTable = NULL;
Robert Elliott1fb7c982015-04-23 09:33:22 -05008616}
8617
Robert Elliottd37ffbe2015-04-23 09:32:27 -05008618/* Allocate ioaccel2 mode command blocks and block fetch table */
8619static int hpsa_alloc_ioaccel2_cmd_and_bft(struct ctlr_info *h)
Stephen M. Cameronaca90122014-02-18 13:56:14 -06008620{
Webb Scalesd9a729f2015-04-23 09:33:27 -05008621 int rc;
8622
Stephen M. Cameronaca90122014-02-18 13:56:14 -06008623 /* Allocate ioaccel2 mode command blocks and block fetch table */
8624
8625 h->ioaccel_maxsg =
8626 readl(&(h->cfgtable->io_accel_max_embedded_sg_count));
8627 if (h->ioaccel_maxsg > IOACCEL2_MAXSGENTRIES)
8628 h->ioaccel_maxsg = IOACCEL2_MAXSGENTRIES;
8629
Stephen M. Cameronaca90122014-02-18 13:56:14 -06008630 BUILD_BUG_ON(sizeof(struct io_accel2_cmd) %
8631 IOACCEL2_COMMANDLIST_ALIGNMENT);
8632 h->ioaccel2_cmd_pool =
8633 pci_alloc_consistent(h->pdev,
8634 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool),
8635 &(h->ioaccel2_cmd_pool_dhandle));
8636
8637 h->ioaccel2_blockFetchTable =
8638 kmalloc(((h->ioaccel_maxsg + 1) *
8639 sizeof(u32)), GFP_KERNEL);
8640
8641 if ((h->ioaccel2_cmd_pool == NULL) ||
Webb Scalesd9a729f2015-04-23 09:33:27 -05008642 (h->ioaccel2_blockFetchTable == NULL)) {
8643 rc = -ENOMEM;
8644 goto clean_up;
8645 }
8646
8647 rc = hpsa_allocate_ioaccel2_sg_chain_blocks(h);
8648 if (rc)
Stephen M. Cameronaca90122014-02-18 13:56:14 -06008649 goto clean_up;
8650
8651 memset(h->ioaccel2_cmd_pool, 0,
8652 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool));
8653 return 0;
8654
8655clean_up:
Robert Elliott1fb7c982015-04-23 09:33:22 -05008656 hpsa_free_ioaccel2_cmd_and_bft(h);
Webb Scalesd9a729f2015-04-23 09:33:27 -05008657 return rc;
Stephen M. Cameronaca90122014-02-18 13:56:14 -06008658}
8659
Robert Elliott105a3db2015-04-23 09:33:48 -05008660/* Free items allocated by hpsa_put_ctlr_into_performant_mode */
8661static void hpsa_free_performant_mode(struct ctlr_info *h)
8662{
8663 kfree(h->blockFetchTable);
8664 h->blockFetchTable = NULL;
8665 hpsa_free_reply_queues(h);
8666 hpsa_free_ioaccel1_cmd_and_bft(h);
8667 hpsa_free_ioaccel2_cmd_and_bft(h);
8668}
8669
8670/* return -ENODEV on error, 0 on success (or no action)
8671 * allocates numerous items that must be freed later
8672 */
8673static int hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h)
Stephen M. Cameron6c311b52010-05-27 15:14:19 -05008674{
8675 u32 trans_support;
Matt Gatese1f7de02014-02-18 13:55:17 -06008676 unsigned long transMethod = CFGTBL_Trans_Performant |
8677 CFGTBL_Trans_use_short_tags;
Robert Elliott105a3db2015-04-23 09:33:48 -05008678 int i, rc;
Stephen M. Cameron6c311b52010-05-27 15:14:19 -05008679
Stephen M. Cameron02ec19c2011-01-06 14:48:29 -06008680 if (hpsa_simple_mode)
Robert Elliott105a3db2015-04-23 09:33:48 -05008681 return 0;
Stephen M. Cameron02ec19c2011-01-06 14:48:29 -06008682
scameron@beardog.cce.hp.com67c99a72014-04-14 14:01:09 -05008683 trans_support = readl(&(h->cfgtable->TransportSupport));
8684 if (!(trans_support & PERFORMANT_MODE))
Robert Elliott105a3db2015-04-23 09:33:48 -05008685 return 0;
scameron@beardog.cce.hp.com67c99a72014-04-14 14:01:09 -05008686
Matt Gatese1f7de02014-02-18 13:55:17 -06008687 /* Check for I/O accelerator mode support */
8688 if (trans_support & CFGTBL_Trans_io_accel1) {
8689 transMethod |= CFGTBL_Trans_io_accel1 |
8690 CFGTBL_Trans_enable_directed_msix;
Robert Elliott105a3db2015-04-23 09:33:48 -05008691 rc = hpsa_alloc_ioaccel1_cmd_and_bft(h);
8692 if (rc)
8693 return rc;
8694 } else if (trans_support & CFGTBL_Trans_io_accel2) {
8695 transMethod |= CFGTBL_Trans_io_accel2 |
Stephen M. Cameronaca90122014-02-18 13:56:14 -06008696 CFGTBL_Trans_enable_directed_msix;
Robert Elliott105a3db2015-04-23 09:33:48 -05008697 rc = hpsa_alloc_ioaccel2_cmd_and_bft(h);
8698 if (rc)
8699 return rc;
Matt Gatese1f7de02014-02-18 13:55:17 -06008700 }
8701
Hannes Reineckeeee0f032014-01-15 13:30:53 +01008702 h->nreply_queues = h->msix_vector > 0 ? h->msix_vector : 1;
Stephen M. Cameroncba3d382010-06-16 13:51:56 -05008703 hpsa_get_max_perf_mode_cmds(h);
Stephen M. Cameron6c311b52010-05-27 15:14:19 -05008704 /* Performant mode ring buffer and supporting data structures */
Stephen M. Cameron072b0512014-05-29 10:53:07 -05008705 h->reply_queue_size = h->max_commands * sizeof(u64);
Stephen M. Cameron6c311b52010-05-27 15:14:19 -05008706
Matt Gates254f7962012-05-01 11:43:06 -05008707 for (i = 0; i < h->nreply_queues; i++) {
Stephen M. Cameron072b0512014-05-29 10:53:07 -05008708 h->reply_queue[i].head = pci_alloc_consistent(h->pdev,
8709 h->reply_queue_size,
8710 &(h->reply_queue[i].busaddr));
Robert Elliott105a3db2015-04-23 09:33:48 -05008711 if (!h->reply_queue[i].head) {
8712 rc = -ENOMEM;
8713 goto clean1; /* rq, ioaccel */
8714 }
Matt Gates254f7962012-05-01 11:43:06 -05008715 h->reply_queue[i].size = h->max_commands;
8716 h->reply_queue[i].wraparound = 1; /* spec: init to 1 */
8717 h->reply_queue[i].current_entry = 0;
8718 }
8719
Stephen M. Cameron6c311b52010-05-27 15:14:19 -05008720 /* Need a block fetch table for performant mode */
Stephen M. Camerond66ae082012-01-19 14:00:48 -06008721 h->blockFetchTable = kmalloc(((SG_ENTRIES_IN_CMD + 1) *
Stephen M. Cameron6c311b52010-05-27 15:14:19 -05008722 sizeof(u32)), GFP_KERNEL);
Robert Elliott105a3db2015-04-23 09:33:48 -05008723 if (!h->blockFetchTable) {
8724 rc = -ENOMEM;
8725 goto clean1; /* rq, ioaccel */
8726 }
Stephen M. Cameron6c311b52010-05-27 15:14:19 -05008727
Robert Elliott105a3db2015-04-23 09:33:48 -05008728 rc = hpsa_enter_performant_mode(h, trans_support);
8729 if (rc)
8730 goto clean2; /* bft, rq, ioaccel */
8731 return 0;
Don Brace303932f2010-02-04 08:42:40 -06008732
Robert Elliott105a3db2015-04-23 09:33:48 -05008733clean2: /* bft, rq, ioaccel */
Don Brace303932f2010-02-04 08:42:40 -06008734 kfree(h->blockFetchTable);
Robert Elliott105a3db2015-04-23 09:33:48 -05008735 h->blockFetchTable = NULL;
8736clean1: /* rq, ioaccel */
8737 hpsa_free_reply_queues(h);
8738 hpsa_free_ioaccel1_cmd_and_bft(h);
8739 hpsa_free_ioaccel2_cmd_and_bft(h);
8740 return rc;
Don Brace303932f2010-02-04 08:42:40 -06008741}
8742
Stephen M. Cameron23100dd2014-02-18 13:57:37 -06008743static int is_accelerated_cmd(struct CommandList *c)
Stephen M. Cameron76438d02014-02-18 13:55:43 -06008744{
Stephen M. Cameron23100dd2014-02-18 13:57:37 -06008745 return c->cmd_type == CMD_IOACCEL1 || c->cmd_type == CMD_IOACCEL2;
8746}
8747
8748static void hpsa_drain_accel_commands(struct ctlr_info *h)
8749{
8750 struct CommandList *c = NULL;
Don Bracef2405db2015-01-23 16:43:09 -06008751 int i, accel_cmds_out;
Webb Scales281a7fd2015-01-23 16:43:35 -06008752 int refcount;
Stephen M. Cameron76438d02014-02-18 13:55:43 -06008753
Don Bracef2405db2015-01-23 16:43:09 -06008754 do { /* wait for all outstanding ioaccel commands to drain out */
Stephen M. Cameron23100dd2014-02-18 13:57:37 -06008755 accel_cmds_out = 0;
Don Bracef2405db2015-01-23 16:43:09 -06008756 for (i = 0; i < h->nr_cmds; i++) {
Don Bracef2405db2015-01-23 16:43:09 -06008757 c = h->cmd_pool + i;
Webb Scales281a7fd2015-01-23 16:43:35 -06008758 refcount = atomic_inc_return(&c->refcount);
8759 if (refcount > 1) /* Command is allocated */
8760 accel_cmds_out += is_accelerated_cmd(c);
8761 cmd_free(h, c);
Don Bracef2405db2015-01-23 16:43:09 -06008762 }
Stephen M. Cameron23100dd2014-02-18 13:57:37 -06008763 if (accel_cmds_out <= 0)
Webb Scales281a7fd2015-01-23 16:43:35 -06008764 break;
Stephen M. Cameron76438d02014-02-18 13:55:43 -06008765 msleep(100);
8766 } while (1);
8767}
8768
Stephen M. Cameronedd16362009-12-08 14:09:11 -08008769/*
8770 * This is it. Register the PCI driver information for the cards we control
8771 * the OS will call our registered routines when it finds one of our cards.
8772 */
8773static int __init hpsa_init(void)
8774{
Mike Miller31468402010-02-25 14:03:12 -06008775 return pci_register_driver(&hpsa_pci_driver);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08008776}
8777
8778static void __exit hpsa_cleanup(void)
8779{
8780 pci_unregister_driver(&hpsa_pci_driver);
Stephen M. Cameronedd16362009-12-08 14:09:11 -08008781}
8782
Matt Gatese1f7de02014-02-18 13:55:17 -06008783static void __attribute__((unused)) verify_offsets(void)
8784{
8785#define VERIFY_OFFSET(member, offset) \
Scott Teeldd0e19f2014-02-18 13:57:31 -06008786 BUILD_BUG_ON(offsetof(struct raid_map_data, member) != offset)
8787
8788 VERIFY_OFFSET(structure_size, 0);
8789 VERIFY_OFFSET(volume_blk_size, 4);
8790 VERIFY_OFFSET(volume_blk_cnt, 8);
8791 VERIFY_OFFSET(phys_blk_shift, 16);
8792 VERIFY_OFFSET(parity_rotation_shift, 17);
8793 VERIFY_OFFSET(strip_size, 18);
8794 VERIFY_OFFSET(disk_starting_blk, 20);
8795 VERIFY_OFFSET(disk_blk_cnt, 28);
8796 VERIFY_OFFSET(data_disks_per_row, 36);
8797 VERIFY_OFFSET(metadata_disks_per_row, 38);
8798 VERIFY_OFFSET(row_cnt, 40);
8799 VERIFY_OFFSET(layout_map_count, 42);
8800 VERIFY_OFFSET(flags, 44);
8801 VERIFY_OFFSET(dekindex, 46);
8802 /* VERIFY_OFFSET(reserved, 48 */
8803 VERIFY_OFFSET(data, 64);
8804
8805#undef VERIFY_OFFSET
8806
8807#define VERIFY_OFFSET(member, offset) \
Mike Millerb66cc252014-02-18 13:56:04 -06008808 BUILD_BUG_ON(offsetof(struct io_accel2_cmd, member) != offset)
8809
8810 VERIFY_OFFSET(IU_type, 0);
8811 VERIFY_OFFSET(direction, 1);
8812 VERIFY_OFFSET(reply_queue, 2);
8813 /* VERIFY_OFFSET(reserved1, 3); */
8814 VERIFY_OFFSET(scsi_nexus, 4);
8815 VERIFY_OFFSET(Tag, 8);
8816 VERIFY_OFFSET(cdb, 16);
8817 VERIFY_OFFSET(cciss_lun, 32);
8818 VERIFY_OFFSET(data_len, 40);
8819 VERIFY_OFFSET(cmd_priority_task_attr, 44);
8820 VERIFY_OFFSET(sg_count, 45);
8821 /* VERIFY_OFFSET(reserved3 */
8822 VERIFY_OFFSET(err_ptr, 48);
8823 VERIFY_OFFSET(err_len, 56);
8824 /* VERIFY_OFFSET(reserved4 */
8825 VERIFY_OFFSET(sg, 64);
8826
8827#undef VERIFY_OFFSET
8828
8829#define VERIFY_OFFSET(member, offset) \
Matt Gatese1f7de02014-02-18 13:55:17 -06008830 BUILD_BUG_ON(offsetof(struct io_accel1_cmd, member) != offset)
8831
8832 VERIFY_OFFSET(dev_handle, 0x00);
8833 VERIFY_OFFSET(reserved1, 0x02);
8834 VERIFY_OFFSET(function, 0x03);
8835 VERIFY_OFFSET(reserved2, 0x04);
8836 VERIFY_OFFSET(err_info, 0x0C);
8837 VERIFY_OFFSET(reserved3, 0x10);
8838 VERIFY_OFFSET(err_info_len, 0x12);
8839 VERIFY_OFFSET(reserved4, 0x13);
8840 VERIFY_OFFSET(sgl_offset, 0x14);
8841 VERIFY_OFFSET(reserved5, 0x15);
8842 VERIFY_OFFSET(transfer_len, 0x1C);
8843 VERIFY_OFFSET(reserved6, 0x20);
8844 VERIFY_OFFSET(io_flags, 0x24);
8845 VERIFY_OFFSET(reserved7, 0x26);
8846 VERIFY_OFFSET(LUN, 0x34);
8847 VERIFY_OFFSET(control, 0x3C);
8848 VERIFY_OFFSET(CDB, 0x40);
8849 VERIFY_OFFSET(reserved8, 0x50);
8850 VERIFY_OFFSET(host_context_flags, 0x60);
8851 VERIFY_OFFSET(timeout_sec, 0x62);
8852 VERIFY_OFFSET(ReplyQueue, 0x64);
8853 VERIFY_OFFSET(reserved9, 0x65);
Stephen M. Cameron50a0dec2014-11-14 17:26:59 -06008854 VERIFY_OFFSET(tag, 0x68);
Matt Gatese1f7de02014-02-18 13:55:17 -06008855 VERIFY_OFFSET(host_addr, 0x70);
8856 VERIFY_OFFSET(CISS_LUN, 0x78);
8857 VERIFY_OFFSET(SG, 0x78 + 8);
8858#undef VERIFY_OFFSET
8859}
8860
Stephen M. Cameronedd16362009-12-08 14:09:11 -08008861module_init(hpsa_init);
8862module_exit(hpsa_cleanup);