Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Mike Miller | bd4f36d | 2007-10-24 10:30:34 +0200 | [diff] [blame] | 2 | * Disk Array driver for HP Smart Array controllers. |
| 3 | * (C) Copyright 2000, 2007 Hewlett-Packard Development Company, L.P. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
Mike Miller | bd4f36d | 2007-10-24 10:30:34 +0200 | [diff] [blame] | 7 | * the Free Software Foundation; version 2 of the License. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
Mike Miller | bd4f36d | 2007-10-24 10:30:34 +0200 | [diff] [blame] | 11 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 | * General Public License for more details. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
Mike Miller | bd4f36d | 2007-10-24 10:30:34 +0200 | [diff] [blame] | 16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 17 | * 02111-1307, USA. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | * |
| 19 | * Questions/Comments/Bugfixes to iss_storagedev@hp.com |
| 20 | * |
| 21 | */ |
| 22 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | #include <linux/module.h> |
| 24 | #include <linux/interrupt.h> |
| 25 | #include <linux/types.h> |
| 26 | #include <linux/pci.h> |
Matthew Garrett | 1937335 | 2011-11-11 22:05:54 +0100 | [diff] [blame] | 27 | #include <linux/pci-aspm.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | #include <linux/kernel.h> |
| 29 | #include <linux/slab.h> |
| 30 | #include <linux/delay.h> |
| 31 | #include <linux/major.h> |
| 32 | #include <linux/fs.h> |
| 33 | #include <linux/bio.h> |
| 34 | #include <linux/blkpg.h> |
| 35 | #include <linux/timer.h> |
| 36 | #include <linux/proc_fs.h> |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 37 | #include <linux/seq_file.h> |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 38 | #include <linux/init.h> |
Randy Dunlap | 4d76160 | 2009-09-18 12:58:48 -0700 | [diff] [blame] | 39 | #include <linux/jiffies.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | #include <linux/hdreg.h> |
| 41 | #include <linux/spinlock.h> |
| 42 | #include <linux/compat.h> |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 43 | #include <linux/mutex.h> |
Akinobu Mita | 1f118bc | 2012-11-08 16:12:22 -0800 | [diff] [blame] | 44 | #include <linux/bitmap.h> |
Akinobu Mita | d48c152 | 2012-11-08 16:12:23 -0800 | [diff] [blame] | 45 | #include <linux/io.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | #include <asm/uaccess.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | |
mike.miller@hp.com | eb0df99 | 2005-06-10 14:51:04 -0500 | [diff] [blame] | 48 | #include <linux/dma-mapping.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | #include <linux/blkdev.h> |
| 50 | #include <linux/genhd.h> |
| 51 | #include <linux/completion.h> |
Stephen Cameron | d5d3b73 | 2007-05-08 00:30:02 -0700 | [diff] [blame] | 52 | #include <scsi/scsi.h> |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 53 | #include <scsi/sg.h> |
| 54 | #include <scsi/scsi_ioctl.h> |
| 55 | #include <linux/cdrom.h> |
Mike Pagano | 231bc2a | 2008-04-10 21:29:26 -0700 | [diff] [blame] | 56 | #include <linux/scatterlist.h> |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 57 | #include <linux/kthread.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | |
| 59 | #define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin)) |
Mike Miller | 841fdff | 2010-06-02 12:58:09 -0700 | [diff] [blame] | 60 | #define DRIVER_NAME "HP CISS Driver (v 3.6.26)" |
| 61 | #define DRIVER_VERSION CCISS_DRIVER_VERSION(3, 6, 26) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | |
| 63 | /* Embedded module documentation macros - see modules.h */ |
| 64 | MODULE_AUTHOR("Hewlett-Packard Company"); |
Mike Miller | 24aac48 | 2008-06-12 15:21:34 -0700 | [diff] [blame] | 65 | MODULE_DESCRIPTION("Driver for HP Smart Array Controllers"); |
Mike Miller | 841fdff | 2010-06-02 12:58:09 -0700 | [diff] [blame] | 66 | MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers"); |
| 67 | MODULE_VERSION("3.6.26"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | MODULE_LICENSE("GPL"); |
Stephen M. Cameron | 8a4ec67 | 2011-05-03 14:54:12 -0500 | [diff] [blame] | 69 | static int cciss_tape_cmds = 6; |
| 70 | module_param(cciss_tape_cmds, int, 0644); |
| 71 | MODULE_PARM_DESC(cciss_tape_cmds, |
| 72 | "number of commands to allocate for tape devices (default: 6)"); |
Joseph Handzik | 1304953 | 2011-08-08 11:40:15 +0200 | [diff] [blame] | 73 | static int cciss_simple_mode; |
| 74 | module_param(cciss_simple_mode, int, S_IRUGO|S_IWUSR); |
| 75 | MODULE_PARM_DESC(cciss_simple_mode, |
| 76 | "Use 'simple mode' rather than 'performant mode'"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | |
Mike Miller | e4292e05 | 2013-04-29 11:55:53 -0700 | [diff] [blame] | 78 | static int cciss_allow_hpsa; |
| 79 | module_param(cciss_allow_hpsa, int, S_IRUGO|S_IWUSR); |
| 80 | MODULE_PARM_DESC(cciss_allow_hpsa, |
| 81 | "Prevent cciss driver from accessing hardware known to be " |
| 82 | " supported by the hpsa driver"); |
| 83 | |
Arnd Bergmann | 2a48fc0 | 2010-06-02 14:28:52 +0200 | [diff] [blame] | 84 | static DEFINE_MUTEX(cciss_mutex); |
Jens Axboe | bbe425c | 2010-11-17 11:56:13 +0100 | [diff] [blame] | 85 | static struct proc_dir_entry *proc_cciss; |
Stephen M. Cameron | 2ec24ff | 2009-10-13 09:18:22 +0200 | [diff] [blame] | 86 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | #include "cciss_cmd.h" |
| 88 | #include "cciss.h" |
| 89 | #include <linux/cciss_ioctl.h> |
| 90 | |
| 91 | /* define the PCI info for the cards we can control */ |
| 92 | static const struct pci_device_id cciss_pci_device_id[] = { |
Bjorn Helgaas | f82ccdb | 2006-06-25 05:49:07 -0700 | [diff] [blame] | 93 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISS, 0x0E11, 0x4070}, |
| 94 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4080}, |
| 95 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4082}, |
| 96 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4083}, |
| 97 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x4091}, |
| 98 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409A}, |
| 99 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409B}, |
| 100 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409C}, |
| 101 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409D}, |
| 102 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSA, 0x103C, 0x3225}, |
| 103 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3223}, |
| 104 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3234}, |
| 105 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3235}, |
| 106 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3211}, |
| 107 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3212}, |
| 108 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3213}, |
| 109 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3214}, |
| 110 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3215}, |
Mike Miller | de92391 | 2006-12-06 20:35:03 -0800 | [diff] [blame] | 111 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3237}, |
Mike Miller (OS Dev | 9cff3b3 | 2007-06-19 20:52:18 +0200 | [diff] [blame] | 112 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x323D}, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | {0,} |
| 114 | }; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 115 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | MODULE_DEVICE_TABLE(pci, cciss_pci_device_id); |
| 117 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | /* board_id = Subsystem Device ID & Vendor ID |
| 119 | * product = Marketing Name for the board |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 120 | * access = Address of the struct of function pointers |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | */ |
| 122 | static struct board_type products[] = { |
Mike Miller | 4915399 | 2008-07-04 10:00:02 -0700 | [diff] [blame] | 123 | {0x40700E11, "Smart Array 5300", &SA5_access}, |
| 124 | {0x40800E11, "Smart Array 5i", &SA5B_access}, |
| 125 | {0x40820E11, "Smart Array 532", &SA5B_access}, |
| 126 | {0x40830E11, "Smart Array 5312", &SA5B_access}, |
| 127 | {0x409A0E11, "Smart Array 641", &SA5_access}, |
| 128 | {0x409B0E11, "Smart Array 642", &SA5_access}, |
| 129 | {0x409C0E11, "Smart Array 6400", &SA5_access}, |
| 130 | {0x409D0E11, "Smart Array 6400 EM", &SA5_access}, |
| 131 | {0x40910E11, "Smart Array 6i", &SA5_access}, |
| 132 | {0x3225103C, "Smart Array P600", &SA5_access}, |
Stephen M. Cameron | 4205df3 | 2010-10-23 18:47:31 +0200 | [diff] [blame] | 133 | {0x3223103C, "Smart Array P800", &SA5_access}, |
| 134 | {0x3234103C, "Smart Array P400", &SA5_access}, |
Mike Miller | 4915399 | 2008-07-04 10:00:02 -0700 | [diff] [blame] | 135 | {0x3235103C, "Smart Array P400i", &SA5_access}, |
| 136 | {0x3211103C, "Smart Array E200i", &SA5_access}, |
| 137 | {0x3212103C, "Smart Array E200", &SA5_access}, |
| 138 | {0x3213103C, "Smart Array E200i", &SA5_access}, |
| 139 | {0x3214103C, "Smart Array E200i", &SA5_access}, |
| 140 | {0x3215103C, "Smart Array E200i", &SA5_access}, |
| 141 | {0x3237103C, "Smart Array E500", &SA5_access}, |
| 142 | {0x323D103C, "Smart Array P700m", &SA5_access}, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | }; |
| 144 | |
Bjorn Helgaas | d14c4ab | 2006-06-25 05:49:04 -0700 | [diff] [blame] | 145 | /* How long to wait (in milliseconds) for board to go into simple mode */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 146 | #define MAX_CONFIG_WAIT 30000 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | #define MAX_IOCTL_CONFIG_WAIT 1000 |
| 148 | |
| 149 | /*define how many times we will try a command because of bus resets */ |
| 150 | #define MAX_CMD_RETRIES 3 |
| 151 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | #define MAX_CTLR 32 |
| 153 | |
| 154 | /* Originally cciss driver only supports 8 major numbers */ |
| 155 | #define MAX_CTLR_ORIG 8 |
| 156 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | static ctlr_info_t *hba[MAX_CTLR]; |
| 158 | |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 159 | static struct task_struct *cciss_scan_thread; |
| 160 | static DEFINE_MUTEX(scan_mutex); |
| 161 | static LIST_HEAD(scan_q); |
| 162 | |
Jens Axboe | 165125e | 2007-07-24 09:28:11 +0200 | [diff] [blame] | 163 | static void do_cciss_request(struct request_queue *q); |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 164 | static irqreturn_t do_cciss_intx(int irq, void *dev_id); |
| 165 | static irqreturn_t do_cciss_msix_intr(int irq, void *dev_id); |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 166 | static int cciss_open(struct block_device *bdev, fmode_t mode); |
Arnd Bergmann | 6e9624b | 2010-08-07 18:25:34 +0200 | [diff] [blame] | 167 | static int cciss_unlocked_open(struct block_device *bdev, fmode_t mode); |
Al Viro | db2a144 | 2013-05-05 21:52:57 -0400 | [diff] [blame] | 168 | static void cciss_release(struct gendisk *disk, fmode_t mode); |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 169 | static int cciss_ioctl(struct block_device *bdev, fmode_t mode, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 170 | unsigned int cmd, unsigned long arg); |
Christoph Hellwig | a885c8c | 2006-01-08 01:02:50 -0800 | [diff] [blame] | 171 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | static int cciss_revalidate(struct gendisk *disk); |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 174 | static int rebuild_lun_table(ctlr_info_t *h, int first_time, int via_ioctl); |
Stephen M. Cameron | a0ea862 | 2008-12-18 14:55:51 +0100 | [diff] [blame] | 175 | static int deregister_disk(ctlr_info_t *h, int drv_index, |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 176 | int clear_all, int via_ioctl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 178 | static void cciss_read_capacity(ctlr_info_t *h, int logvol, |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 179 | sector_t *total_size, unsigned int *block_size); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 180 | static void cciss_read_capacity_16(ctlr_info_t *h, int logvol, |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 181 | sector_t *total_size, unsigned int *block_size); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 182 | static void cciss_geometry_inquiry(ctlr_info_t *h, int logvol, |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 183 | sector_t total_size, |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 184 | unsigned int block_size, InquiryData_struct *inq_buff, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 185 | drive_info_struct *drv); |
Greg Kroah-Hartman | 8d85fce | 2012-12-21 15:13:49 -0800 | [diff] [blame] | 186 | static void cciss_interrupt_mode(ctlr_info_t *); |
| 187 | static int cciss_enter_simple_mode(struct ctlr_info *h); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 188 | static void start_io(ctlr_info_t *h); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 189 | static int sendcmd_withirq(ctlr_info_t *h, __u8 cmd, void *buff, size_t size, |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 190 | __u8 page_code, unsigned char scsi3addr[], |
| 191 | int cmd_type); |
scameron@beardog.cca.cpqcorp.net | 85cc61a | 2009-06-08 16:07:45 -0500 | [diff] [blame] | 192 | static int sendcmd_withirq_core(ctlr_info_t *h, CommandList_struct *c, |
| 193 | int attempt_retry); |
| 194 | static int process_sendcmd_error(ctlr_info_t *h, CommandList_struct *c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | |
Andrew Patterson | d6f4965 | 2009-09-17 13:47:03 -0500 | [diff] [blame] | 196 | static int add_to_scan_list(struct ctlr_info *h); |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 197 | static int scan_thread(void *data); |
| 198 | static int check_for_unit_attention(ctlr_info_t *h, CommandList_struct *c); |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 199 | static void cciss_hba_release(struct device *dev); |
| 200 | static void cciss_device_release(struct device *dev); |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 201 | static void cciss_free_gendisk(ctlr_info_t *h, int drv_index); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 202 | static void cciss_free_drive_info(ctlr_info_t *h, int drv_index); |
Mike Miller | 29979a7 | 2010-06-11 13:13:35 +0200 | [diff] [blame] | 203 | static inline u32 next_command(ctlr_info_t *h); |
Greg Kroah-Hartman | 8d85fce | 2012-12-21 15:13:49 -0800 | [diff] [blame] | 204 | static int cciss_find_cfg_addrs(struct pci_dev *pdev, void __iomem *vaddr, |
| 205 | u32 *cfg_base_addr, u64 *cfg_base_addr_index, |
| 206 | u64 *cfg_offset); |
| 207 | static int cciss_pci_find_memory_BAR(struct pci_dev *pdev, |
| 208 | unsigned long *memory_bar); |
Stephen M. Cameron | 1601113 | 2011-03-12 10:02:21 +0100 | [diff] [blame] | 209 | static inline u32 cciss_tag_discard_error_bits(ctlr_info_t *h, u32 tag); |
Greg Kroah-Hartman | 8d85fce | 2012-12-21 15:13:49 -0800 | [diff] [blame] | 210 | static int write_driver_ver_to_cfgtable(CfgTable_struct __iomem *cfgtable); |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 211 | |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 212 | /* performant mode helper functions */ |
| 213 | static void calc_bucket_map(int *bucket, int num_buckets, int nsgs, |
| 214 | int *bucket_map); |
| 215 | static void cciss_put_controller_into_performant_mode(ctlr_info_t *h); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | |
| 217 | #ifdef CONFIG_PROC_FS |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 218 | static void cciss_procinit(ctlr_info_t *h); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | #else |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 220 | static void cciss_procinit(ctlr_info_t *h) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 221 | { |
| 222 | } |
| 223 | #endif /* CONFIG_PROC_FS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | |
| 225 | #ifdef CONFIG_COMPAT |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 226 | static int cciss_compat_ioctl(struct block_device *, fmode_t, |
| 227 | unsigned, unsigned long); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 228 | #endif |
| 229 | |
Alexey Dobriyan | 83d5cde | 2009-09-21 17:01:13 -0700 | [diff] [blame] | 230 | static const struct block_device_operations cciss_fops = { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 231 | .owner = THIS_MODULE, |
Arnd Bergmann | 6e9624b | 2010-08-07 18:25:34 +0200 | [diff] [blame] | 232 | .open = cciss_unlocked_open, |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 233 | .release = cciss_release, |
Stephen M. Cameron | 03f47e8 | 2013-06-12 14:04:47 -0700 | [diff] [blame] | 234 | .ioctl = cciss_ioctl, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 235 | .getgeo = cciss_getgeo, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | #ifdef CONFIG_COMPAT |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 237 | .compat_ioctl = cciss_compat_ioctl, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | #endif |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 239 | .revalidate_disk = cciss_revalidate, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 240 | }; |
| 241 | |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 242 | /* set_performant_mode: Modify the tag for cciss performant |
| 243 | * set bit 0 for pull model, bits 3-1 for block fetch |
| 244 | * register number |
| 245 | */ |
| 246 | static void set_performant_mode(ctlr_info_t *h, CommandList_struct *c) |
| 247 | { |
Stephen M. Cameron | 0498cc2 | 2011-03-12 10:02:16 +0100 | [diff] [blame] | 248 | if (likely(h->transMethod & CFGTBL_Trans_Performant)) |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 249 | c->busaddr |= 1 | (h->blockFetchTable[c->Header.SGList] << 1); |
| 250 | } |
| 251 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | /* |
| 253 | * Enqueuing and dequeuing functions for cmdlists. |
| 254 | */ |
Jens Axboe | e6e1ee9 | 2011-01-10 21:50:33 +0100 | [diff] [blame] | 255 | static inline void addQ(struct list_head *list, CommandList_struct *c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | { |
Jens Axboe | e6e1ee9 | 2011-01-10 21:50:33 +0100 | [diff] [blame] | 257 | list_add_tail(&c->list, list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | } |
| 259 | |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 260 | static inline void removeQ(CommandList_struct *c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | { |
Hannes Reinecke | b59e64d | 2009-07-02 22:02:06 +0200 | [diff] [blame] | 262 | /* |
| 263 | * After kexec/dump some commands might still |
| 264 | * be in flight, which the firmware will try |
| 265 | * to complete. Resetting the firmware doesn't work |
| 266 | * with old fw revisions, so we have to mark |
| 267 | * them off as 'stale' to prevent the driver from |
| 268 | * falling over. |
| 269 | */ |
Jens Axboe | e6e1ee9 | 2011-01-10 21:50:33 +0100 | [diff] [blame] | 270 | if (WARN_ON(list_empty(&c->list))) { |
Hannes Reinecke | b59e64d | 2009-07-02 22:02:06 +0200 | [diff] [blame] | 271 | c->cmd_type = CMD_MSG_STALE; |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 272 | return; |
Hannes Reinecke | b59e64d | 2009-07-02 22:02:06 +0200 | [diff] [blame] | 273 | } |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 274 | |
Jens Axboe | e6e1ee9 | 2011-01-10 21:50:33 +0100 | [diff] [blame] | 275 | list_del_init(&c->list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 276 | } |
| 277 | |
Mike Miller | 664a717 | 2010-06-02 12:57:58 -0700 | [diff] [blame] | 278 | static void enqueue_cmd_and_start_io(ctlr_info_t *h, |
| 279 | CommandList_struct *c) |
| 280 | { |
| 281 | unsigned long flags; |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 282 | set_performant_mode(h, c); |
Mike Miller | 664a717 | 2010-06-02 12:57:58 -0700 | [diff] [blame] | 283 | spin_lock_irqsave(&h->lock, flags); |
| 284 | addQ(&h->reqQ, c); |
| 285 | h->Qdepth++; |
Stephen M. Cameron | 2a643ec | 2010-08-25 19:58:53 +0200 | [diff] [blame] | 286 | if (h->Qdepth > h->maxQsinceinit) |
| 287 | h->maxQsinceinit = h->Qdepth; |
Mike Miller | 664a717 | 2010-06-02 12:57:58 -0700 | [diff] [blame] | 288 | start_io(h); |
| 289 | spin_unlock_irqrestore(&h->lock, flags); |
| 290 | } |
| 291 | |
Stephen M. Cameron | dccc9b5 | 2010-02-26 16:01:27 -0600 | [diff] [blame] | 292 | static void cciss_free_sg_chain_blocks(SGDescriptor_struct **cmd_sg_list, |
Stephen M. Cameron | 49fc560 | 2010-02-26 16:01:22 -0600 | [diff] [blame] | 293 | int nr_cmds) |
| 294 | { |
| 295 | int i; |
| 296 | |
| 297 | if (!cmd_sg_list) |
| 298 | return; |
| 299 | for (i = 0; i < nr_cmds; i++) { |
Stephen M. Cameron | dccc9b5 | 2010-02-26 16:01:27 -0600 | [diff] [blame] | 300 | kfree(cmd_sg_list[i]); |
| 301 | cmd_sg_list[i] = NULL; |
Stephen M. Cameron | 49fc560 | 2010-02-26 16:01:22 -0600 | [diff] [blame] | 302 | } |
| 303 | kfree(cmd_sg_list); |
| 304 | } |
| 305 | |
Stephen M. Cameron | dccc9b5 | 2010-02-26 16:01:27 -0600 | [diff] [blame] | 306 | static SGDescriptor_struct **cciss_allocate_sg_chain_blocks( |
| 307 | ctlr_info_t *h, int chainsize, int nr_cmds) |
Stephen M. Cameron | 49fc560 | 2010-02-26 16:01:22 -0600 | [diff] [blame] | 308 | { |
| 309 | int j; |
Stephen M. Cameron | dccc9b5 | 2010-02-26 16:01:27 -0600 | [diff] [blame] | 310 | SGDescriptor_struct **cmd_sg_list; |
Stephen M. Cameron | 49fc560 | 2010-02-26 16:01:22 -0600 | [diff] [blame] | 311 | |
| 312 | if (chainsize <= 0) |
| 313 | return NULL; |
| 314 | |
| 315 | cmd_sg_list = kmalloc(sizeof(*cmd_sg_list) * nr_cmds, GFP_KERNEL); |
| 316 | if (!cmd_sg_list) |
| 317 | return NULL; |
| 318 | |
| 319 | /* Build up chain blocks for each command */ |
| 320 | for (j = 0; j < nr_cmds; j++) { |
Stephen M. Cameron | 49fc560 | 2010-02-26 16:01:22 -0600 | [diff] [blame] | 321 | /* Need a block of chainsized s/g elements. */ |
Stephen M. Cameron | dccc9b5 | 2010-02-26 16:01:27 -0600 | [diff] [blame] | 322 | cmd_sg_list[j] = kmalloc((chainsize * |
| 323 | sizeof(*cmd_sg_list[j])), GFP_KERNEL); |
| 324 | if (!cmd_sg_list[j]) { |
Stephen M. Cameron | 49fc560 | 2010-02-26 16:01:22 -0600 | [diff] [blame] | 325 | dev_err(&h->pdev->dev, "Cannot get memory " |
| 326 | "for s/g chains.\n"); |
| 327 | goto clean; |
| 328 | } |
| 329 | } |
| 330 | return cmd_sg_list; |
| 331 | clean: |
| 332 | cciss_free_sg_chain_blocks(cmd_sg_list, nr_cmds); |
| 333 | return NULL; |
| 334 | } |
| 335 | |
Stephen M. Cameron | d45033e | 2010-02-26 16:01:37 -0600 | [diff] [blame] | 336 | static void cciss_unmap_sg_chain_block(ctlr_info_t *h, CommandList_struct *c) |
| 337 | { |
| 338 | SGDescriptor_struct *chain_sg; |
| 339 | u64bit temp64; |
| 340 | |
| 341 | if (c->Header.SGTotal <= h->max_cmd_sgentries) |
| 342 | return; |
| 343 | |
| 344 | chain_sg = &c->SG[h->max_cmd_sgentries - 1]; |
| 345 | temp64.val32.lower = chain_sg->Addr.lower; |
| 346 | temp64.val32.upper = chain_sg->Addr.upper; |
| 347 | pci_unmap_single(h->pdev, temp64.val, chain_sg->Len, PCI_DMA_TODEVICE); |
| 348 | } |
| 349 | |
| 350 | static void cciss_map_sg_chain_block(ctlr_info_t *h, CommandList_struct *c, |
| 351 | SGDescriptor_struct *chain_block, int len) |
| 352 | { |
| 353 | SGDescriptor_struct *chain_sg; |
| 354 | u64bit temp64; |
| 355 | |
| 356 | chain_sg = &c->SG[h->max_cmd_sgentries - 1]; |
| 357 | chain_sg->Ext = CCISS_SG_CHAIN; |
| 358 | chain_sg->Len = len; |
| 359 | temp64.val = pci_map_single(h->pdev, chain_block, len, |
| 360 | PCI_DMA_TODEVICE); |
| 361 | chain_sg->Addr.lower = temp64.val32.lower; |
| 362 | chain_sg->Addr.upper = temp64.val32.upper; |
| 363 | } |
| 364 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 365 | #include "cciss_scsi.c" /* For SCSI tape support */ |
| 366 | |
Alexander Beregalov | 1e6f2dc | 2009-09-24 16:15:38 +0200 | [diff] [blame] | 367 | static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG", |
| 368 | "UNKNOWN" |
| 369 | }; |
Kulikov Vasiliy | 0e4a9d0 | 2010-06-28 15:54:44 +0400 | [diff] [blame] | 370 | #define RAID_UNKNOWN (ARRAY_SIZE(raid_label)-1) |
Randy Dunlap | 0f5486e | 2006-12-29 16:48:31 -0800 | [diff] [blame] | 371 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | #ifdef CONFIG_PROC_FS |
| 373 | |
| 374 | /* |
| 375 | * Report information about this controller. |
| 376 | */ |
| 377 | #define ENG_GIG 1000000000 |
| 378 | #define ENG_GIG_FACTOR (ENG_GIG/512) |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 379 | #define ENGAGE_SCSI "engage scsi" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 380 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 381 | static void cciss_seq_show_header(struct seq_file *seq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | { |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 383 | ctlr_info_t *h = seq->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 385 | seq_printf(seq, "%s: HP %s Controller\n" |
| 386 | "Board ID: 0x%08lx\n" |
| 387 | "Firmware Version: %c%c%c%c\n" |
| 388 | "IRQ: %d\n" |
| 389 | "Logical drives: %d\n" |
| 390 | "Current Q depth: %d\n" |
| 391 | "Current # commands on controller: %d\n" |
| 392 | "Max Q depth since init: %d\n" |
| 393 | "Max # commands on controller since init: %d\n" |
| 394 | "Max SG entries since init: %d\n", |
| 395 | h->devname, |
| 396 | h->product_name, |
| 397 | (unsigned long)h->board_id, |
| 398 | h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], |
Joseph Handzik | 1304953 | 2011-08-08 11:40:15 +0200 | [diff] [blame] | 399 | h->firm_ver[3], (unsigned int)h->intr[h->intr_mode], |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 400 | h->num_luns, |
| 401 | h->Qdepth, h->commands_outstanding, |
| 402 | h->maxQsinceinit, h->max_outstanding, h->maxSG); |
| 403 | |
| 404 | #ifdef CONFIG_CISS_SCSI_TAPE |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 405 | cciss_seq_tape_report(seq, h); |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 406 | #endif /* CONFIG_CISS_SCSI_TAPE */ |
| 407 | } |
| 408 | |
| 409 | static void *cciss_seq_start(struct seq_file *seq, loff_t *pos) |
| 410 | { |
| 411 | ctlr_info_t *h = seq->private; |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 412 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | |
| 414 | /* prevent displaying bogus info during configuration |
| 415 | * or deconfiguration of a logical volume |
| 416 | */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 417 | spin_lock_irqsave(&h->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | if (h->busy_configuring) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 419 | spin_unlock_irqrestore(&h->lock, flags); |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 420 | return ERR_PTR(-EBUSY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | } |
| 422 | h->busy_configuring = 1; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 423 | spin_unlock_irqrestore(&h->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 425 | if (*pos == 0) |
| 426 | cciss_seq_show_header(seq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 428 | return pos; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 429 | } |
| 430 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 431 | static int cciss_seq_show(struct seq_file *seq, void *v) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 432 | { |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 433 | sector_t vol_sz, vol_sz_frac; |
| 434 | ctlr_info_t *h = seq->private; |
| 435 | unsigned ctlr = h->ctlr; |
| 436 | loff_t *pos = v; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 437 | drive_info_struct *drv = h->drv[*pos]; |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 438 | |
| 439 | if (*pos > h->highest_lun) |
| 440 | return 0; |
| 441 | |
Stephen M. Cameron | 531c2dc | 2010-02-05 13:14:04 +0100 | [diff] [blame] | 442 | if (drv == NULL) /* it's possible for h->drv[] to have holes. */ |
| 443 | return 0; |
| 444 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 445 | if (drv->heads == 0) |
| 446 | return 0; |
| 447 | |
| 448 | vol_sz = drv->nr_blocks; |
| 449 | vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR); |
| 450 | vol_sz_frac *= 100; |
| 451 | sector_div(vol_sz_frac, ENG_GIG_FACTOR); |
| 452 | |
Stephen M. Cameron | fa52bec | 2009-09-17 13:48:15 -0500 | [diff] [blame] | 453 | if (drv->raid_level < 0 || drv->raid_level > RAID_UNKNOWN) |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 454 | drv->raid_level = RAID_UNKNOWN; |
| 455 | seq_printf(seq, "cciss/c%dd%d:" |
| 456 | "\t%4u.%02uGB\tRAID %s\n", |
| 457 | ctlr, (int) *pos, (int)vol_sz, (int)vol_sz_frac, |
| 458 | raid_label[drv->raid_level]); |
| 459 | return 0; |
| 460 | } |
| 461 | |
| 462 | static void *cciss_seq_next(struct seq_file *seq, void *v, loff_t *pos) |
| 463 | { |
| 464 | ctlr_info_t *h = seq->private; |
| 465 | |
| 466 | if (*pos > h->highest_lun) |
| 467 | return NULL; |
| 468 | *pos += 1; |
| 469 | |
| 470 | return pos; |
| 471 | } |
| 472 | |
| 473 | static void cciss_seq_stop(struct seq_file *seq, void *v) |
| 474 | { |
| 475 | ctlr_info_t *h = seq->private; |
| 476 | |
| 477 | /* Only reset h->busy_configuring if we succeeded in setting |
| 478 | * it during cciss_seq_start. */ |
| 479 | if (v == ERR_PTR(-EBUSY)) |
| 480 | return; |
| 481 | |
| 482 | h->busy_configuring = 0; |
| 483 | } |
| 484 | |
James Morris | 88e9d34 | 2009-09-22 16:43:43 -0700 | [diff] [blame] | 485 | static const struct seq_operations cciss_seq_ops = { |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 486 | .start = cciss_seq_start, |
| 487 | .show = cciss_seq_show, |
| 488 | .next = cciss_seq_next, |
| 489 | .stop = cciss_seq_stop, |
| 490 | }; |
| 491 | |
| 492 | static int cciss_seq_open(struct inode *inode, struct file *file) |
| 493 | { |
| 494 | int ret = seq_open(file, &cciss_seq_ops); |
| 495 | struct seq_file *seq = file->private_data; |
| 496 | |
| 497 | if (!ret) |
Al Viro | d9dda78 | 2013-03-31 18:16:14 -0400 | [diff] [blame] | 498 | seq->private = PDE_DATA(inode); |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 499 | |
| 500 | return ret; |
| 501 | } |
| 502 | |
| 503 | static ssize_t |
| 504 | cciss_proc_write(struct file *file, const char __user *buf, |
| 505 | size_t length, loff_t *ppos) |
| 506 | { |
| 507 | int err; |
| 508 | char *buffer; |
| 509 | |
| 510 | #ifndef CONFIG_CISS_SCSI_TAPE |
| 511 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | #endif |
| 513 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 514 | if (!buf || length > PAGE_SIZE - 1) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 515 | return -EINVAL; |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 516 | |
Al Viro | e4e85bb | 2015-12-24 00:12:09 -0500 | [diff] [blame] | 517 | buffer = memdup_user_nul(buf, length); |
| 518 | if (IS_ERR(buffer)) |
| 519 | return PTR_ERR(buffer); |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 520 | |
| 521 | #ifdef CONFIG_CISS_SCSI_TAPE |
| 522 | if (strncmp(ENGAGE_SCSI, buffer, sizeof ENGAGE_SCSI - 1) == 0) { |
| 523 | struct seq_file *seq = file->private_data; |
| 524 | ctlr_info_t *h = seq->private; |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 525 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 526 | err = cciss_engage_scsi(h); |
Stephen M. Cameron | 8721c81 | 2009-11-12 12:50:06 -0600 | [diff] [blame] | 527 | if (err == 0) |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 528 | err = length; |
| 529 | } else |
| 530 | #endif /* CONFIG_CISS_SCSI_TAPE */ |
| 531 | err = -EINVAL; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 532 | /* might be nice to have "disengage" too, but it's not |
| 533 | safely possible. (only 1 module use count, lock issues.) */ |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 534 | |
Al Viro | e4e85bb | 2015-12-24 00:12:09 -0500 | [diff] [blame] | 535 | kfree(buffer); |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 536 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 537 | } |
| 538 | |
Alexey Dobriyan | 828c095 | 2009-10-01 15:43:56 -0700 | [diff] [blame] | 539 | static const struct file_operations cciss_proc_fops = { |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 540 | .owner = THIS_MODULE, |
| 541 | .open = cciss_seq_open, |
| 542 | .read = seq_read, |
| 543 | .llseek = seq_lseek, |
| 544 | .release = seq_release, |
| 545 | .write = cciss_proc_write, |
| 546 | }; |
| 547 | |
Greg Kroah-Hartman | 8d85fce | 2012-12-21 15:13:49 -0800 | [diff] [blame] | 548 | static void cciss_procinit(ctlr_info_t *h) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 549 | { |
| 550 | struct proc_dir_entry *pde; |
| 551 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 552 | if (proc_cciss == NULL) |
Alexey Dobriyan | 928b4d8 | 2008-04-29 01:01:44 -0700 | [diff] [blame] | 553 | proc_cciss = proc_mkdir("driver/cciss", NULL); |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 554 | if (!proc_cciss) |
| 555 | return; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 556 | pde = proc_create_data(h->devname, S_IWUSR | S_IRUSR | S_IRGRP | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 557 | S_IROTH, proc_cciss, |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 558 | &cciss_proc_fops, h); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 560 | #endif /* CONFIG_PROC_FS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 562 | #define MAX_PRODUCT_NAME_LEN 19 |
| 563 | |
| 564 | #define to_hba(n) container_of(n, struct ctlr_info, dev) |
| 565 | #define to_drv(n) container_of(n, drive_info_struct, dev) |
| 566 | |
Stephen M. Cameron | ec52d5f | 2011-05-03 14:54:02 -0500 | [diff] [blame] | 567 | /* List of controllers which cannot be hard reset on kexec with reset_devices */ |
Stephen M. Cameron | 957c2ec | 2011-03-11 20:06:09 +0100 | [diff] [blame] | 568 | static u32 unresettable_controller[] = { |
Stephen M. Cameron | 957c2ec | 2011-03-11 20:06:09 +0100 | [diff] [blame] | 569 | 0x3223103C, /* Smart Array P800 */ |
| 570 | 0x3234103C, /* Smart Array P400 */ |
| 571 | 0x3235103C, /* Smart Array P400i */ |
| 572 | 0x3211103C, /* Smart Array E200i */ |
| 573 | 0x3212103C, /* Smart Array E200 */ |
| 574 | 0x3213103C, /* Smart Array E200i */ |
| 575 | 0x3214103C, /* Smart Array E200i */ |
| 576 | 0x3215103C, /* Smart Array E200i */ |
| 577 | 0x3237103C, /* Smart Array E500 */ |
| 578 | 0x323D103C, /* Smart Array P700m */ |
Tomas Henzl | b9ea9dc | 2015-02-17 17:40:22 +0100 | [diff] [blame] | 579 | 0x40800E11, /* Smart Array 5i */ |
Stephen M. Cameron | 957c2ec | 2011-03-11 20:06:09 +0100 | [diff] [blame] | 580 | 0x409C0E11, /* Smart Array 6400 */ |
| 581 | 0x409D0E11, /* Smart Array 6400 EM */ |
Tomas Henzl | b9ea9dc | 2015-02-17 17:40:22 +0100 | [diff] [blame] | 582 | 0x40700E11, /* Smart Array 5300 */ |
| 583 | 0x40820E11, /* Smart Array 532 */ |
| 584 | 0x40830E11, /* Smart Array 5312 */ |
| 585 | 0x409A0E11, /* Smart Array 641 */ |
| 586 | 0x409B0E11, /* Smart Array 642 */ |
| 587 | 0x40910E11, /* Smart Array 6i */ |
Stephen M. Cameron | 957c2ec | 2011-03-11 20:06:09 +0100 | [diff] [blame] | 588 | }; |
| 589 | |
Stephen M. Cameron | ec52d5f | 2011-05-03 14:54:02 -0500 | [diff] [blame] | 590 | /* List of controllers which cannot even be soft reset */ |
| 591 | static u32 soft_unresettable_controller[] = { |
Tomas Henzl | b9ea9dc | 2015-02-17 17:40:22 +0100 | [diff] [blame] | 592 | 0x40800E11, /* Smart Array 5i */ |
| 593 | 0x40700E11, /* Smart Array 5300 */ |
| 594 | 0x40820E11, /* Smart Array 532 */ |
| 595 | 0x40830E11, /* Smart Array 5312 */ |
| 596 | 0x409A0E11, /* Smart Array 641 */ |
| 597 | 0x409B0E11, /* Smart Array 642 */ |
| 598 | 0x40910E11, /* Smart Array 6i */ |
| 599 | /* Exclude 640x boards. These are two pci devices in one slot |
| 600 | * which share a battery backed cache module. One controls the |
| 601 | * cache, the other accesses the cache through the one that controls |
| 602 | * it. If we reset the one controlling the cache, the other will |
| 603 | * likely not be happy. Just forbid resetting this conjoined mess. |
| 604 | */ |
Stephen M. Cameron | ec52d5f | 2011-05-03 14:54:02 -0500 | [diff] [blame] | 605 | 0x409C0E11, /* Smart Array 6400 */ |
| 606 | 0x409D0E11, /* Smart Array 6400 EM */ |
| 607 | }; |
| 608 | |
| 609 | static int ctlr_is_hard_resettable(u32 board_id) |
Stephen M. Cameron | 957c2ec | 2011-03-11 20:06:09 +0100 | [diff] [blame] | 610 | { |
| 611 | int i; |
| 612 | |
| 613 | for (i = 0; i < ARRAY_SIZE(unresettable_controller); i++) |
Stephen M. Cameron | ec52d5f | 2011-05-03 14:54:02 -0500 | [diff] [blame] | 614 | if (unresettable_controller[i] == board_id) |
Stephen M. Cameron | 957c2ec | 2011-03-11 20:06:09 +0100 | [diff] [blame] | 615 | return 0; |
| 616 | return 1; |
| 617 | } |
| 618 | |
Stephen M. Cameron | ec52d5f | 2011-05-03 14:54:02 -0500 | [diff] [blame] | 619 | static int ctlr_is_soft_resettable(u32 board_id) |
| 620 | { |
| 621 | int i; |
| 622 | |
| 623 | for (i = 0; i < ARRAY_SIZE(soft_unresettable_controller); i++) |
| 624 | if (soft_unresettable_controller[i] == board_id) |
| 625 | return 0; |
| 626 | return 1; |
| 627 | } |
| 628 | |
| 629 | static int ctlr_is_resettable(u32 board_id) |
| 630 | { |
| 631 | return ctlr_is_hard_resettable(board_id) || |
| 632 | ctlr_is_soft_resettable(board_id); |
| 633 | } |
| 634 | |
Stephen M. Cameron | 957c2ec | 2011-03-11 20:06:09 +0100 | [diff] [blame] | 635 | static ssize_t host_show_resettable(struct device *dev, |
| 636 | struct device_attribute *attr, |
| 637 | char *buf) |
| 638 | { |
| 639 | struct ctlr_info *h = to_hba(dev); |
| 640 | |
Stephen M. Cameron | ec52d5f | 2011-05-03 14:54:02 -0500 | [diff] [blame] | 641 | return snprintf(buf, 20, "%d\n", ctlr_is_resettable(h->board_id)); |
Stephen M. Cameron | 957c2ec | 2011-03-11 20:06:09 +0100 | [diff] [blame] | 642 | } |
| 643 | static DEVICE_ATTR(resettable, S_IRUGO, host_show_resettable, NULL); |
| 644 | |
Andrew Patterson | d6f4965 | 2009-09-17 13:47:03 -0500 | [diff] [blame] | 645 | static ssize_t host_store_rescan(struct device *dev, |
| 646 | struct device_attribute *attr, |
| 647 | const char *buf, size_t count) |
| 648 | { |
| 649 | struct ctlr_info *h = to_hba(dev); |
| 650 | |
| 651 | add_to_scan_list(h); |
| 652 | wake_up_process(cciss_scan_thread); |
| 653 | wait_for_completion_interruptible(&h->scan_wait); |
| 654 | |
| 655 | return count; |
| 656 | } |
Alex Chiang | 8ba95c6 | 2009-11-12 12:49:14 -0600 | [diff] [blame] | 657 | static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 658 | |
Joe Handzik | f963d27 | 2011-08-08 11:40:17 +0200 | [diff] [blame] | 659 | static ssize_t host_show_transport_mode(struct device *dev, |
| 660 | struct device_attribute *attr, |
| 661 | char *buf) |
| 662 | { |
| 663 | struct ctlr_info *h = to_hba(dev); |
| 664 | |
| 665 | return snprintf(buf, 20, "%s\n", |
| 666 | h->transMethod & CFGTBL_Trans_Performant ? |
| 667 | "performant" : "simple"); |
| 668 | } |
| 669 | static DEVICE_ATTR(transport_mode, S_IRUGO, host_show_transport_mode, NULL); |
| 670 | |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 671 | static ssize_t dev_show_unique_id(struct device *dev, |
| 672 | struct device_attribute *attr, |
| 673 | char *buf) |
| 674 | { |
| 675 | drive_info_struct *drv = to_drv(dev); |
| 676 | struct ctlr_info *h = to_hba(drv->dev.parent); |
| 677 | __u8 sn[16]; |
| 678 | unsigned long flags; |
| 679 | int ret = 0; |
| 680 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 681 | spin_lock_irqsave(&h->lock, flags); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 682 | if (h->busy_configuring) |
| 683 | ret = -EBUSY; |
| 684 | else |
| 685 | memcpy(sn, drv->serial_no, sizeof(sn)); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 686 | spin_unlock_irqrestore(&h->lock, flags); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 687 | |
| 688 | if (ret) |
| 689 | return ret; |
| 690 | else |
| 691 | return snprintf(buf, 16 * 2 + 2, |
| 692 | "%02X%02X%02X%02X%02X%02X%02X%02X" |
| 693 | "%02X%02X%02X%02X%02X%02X%02X%02X\n", |
| 694 | sn[0], sn[1], sn[2], sn[3], |
| 695 | sn[4], sn[5], sn[6], sn[7], |
| 696 | sn[8], sn[9], sn[10], sn[11], |
| 697 | sn[12], sn[13], sn[14], sn[15]); |
| 698 | } |
Alex Chiang | 8ba95c6 | 2009-11-12 12:49:14 -0600 | [diff] [blame] | 699 | static DEVICE_ATTR(unique_id, S_IRUGO, dev_show_unique_id, NULL); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 700 | |
| 701 | static ssize_t dev_show_vendor(struct device *dev, |
| 702 | struct device_attribute *attr, |
| 703 | char *buf) |
| 704 | { |
| 705 | drive_info_struct *drv = to_drv(dev); |
| 706 | struct ctlr_info *h = to_hba(drv->dev.parent); |
| 707 | char vendor[VENDOR_LEN + 1]; |
| 708 | unsigned long flags; |
| 709 | int ret = 0; |
| 710 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 711 | spin_lock_irqsave(&h->lock, flags); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 712 | if (h->busy_configuring) |
| 713 | ret = -EBUSY; |
| 714 | else |
| 715 | memcpy(vendor, drv->vendor, VENDOR_LEN + 1); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 716 | spin_unlock_irqrestore(&h->lock, flags); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 717 | |
| 718 | if (ret) |
| 719 | return ret; |
| 720 | else |
| 721 | return snprintf(buf, sizeof(vendor) + 1, "%s\n", drv->vendor); |
| 722 | } |
Alex Chiang | 8ba95c6 | 2009-11-12 12:49:14 -0600 | [diff] [blame] | 723 | static DEVICE_ATTR(vendor, S_IRUGO, dev_show_vendor, NULL); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 724 | |
| 725 | static ssize_t dev_show_model(struct device *dev, |
| 726 | struct device_attribute *attr, |
| 727 | char *buf) |
| 728 | { |
| 729 | drive_info_struct *drv = to_drv(dev); |
| 730 | struct ctlr_info *h = to_hba(drv->dev.parent); |
| 731 | char model[MODEL_LEN + 1]; |
| 732 | unsigned long flags; |
| 733 | int ret = 0; |
| 734 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 735 | spin_lock_irqsave(&h->lock, flags); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 736 | if (h->busy_configuring) |
| 737 | ret = -EBUSY; |
| 738 | else |
| 739 | memcpy(model, drv->model, MODEL_LEN + 1); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 740 | spin_unlock_irqrestore(&h->lock, flags); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 741 | |
| 742 | if (ret) |
| 743 | return ret; |
| 744 | else |
| 745 | return snprintf(buf, sizeof(model) + 1, "%s\n", drv->model); |
| 746 | } |
Alex Chiang | 8ba95c6 | 2009-11-12 12:49:14 -0600 | [diff] [blame] | 747 | static DEVICE_ATTR(model, S_IRUGO, dev_show_model, NULL); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 748 | |
| 749 | static ssize_t dev_show_rev(struct device *dev, |
| 750 | struct device_attribute *attr, |
| 751 | char *buf) |
| 752 | { |
| 753 | drive_info_struct *drv = to_drv(dev); |
| 754 | struct ctlr_info *h = to_hba(drv->dev.parent); |
| 755 | char rev[REV_LEN + 1]; |
| 756 | unsigned long flags; |
| 757 | int ret = 0; |
| 758 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 759 | spin_lock_irqsave(&h->lock, flags); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 760 | if (h->busy_configuring) |
| 761 | ret = -EBUSY; |
| 762 | else |
| 763 | memcpy(rev, drv->rev, REV_LEN + 1); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 764 | spin_unlock_irqrestore(&h->lock, flags); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 765 | |
| 766 | if (ret) |
| 767 | return ret; |
| 768 | else |
| 769 | return snprintf(buf, sizeof(rev) + 1, "%s\n", drv->rev); |
| 770 | } |
Alex Chiang | 8ba95c6 | 2009-11-12 12:49:14 -0600 | [diff] [blame] | 771 | static DEVICE_ATTR(rev, S_IRUGO, dev_show_rev, NULL); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 772 | |
Stephen M. Cameron | ce84a8a | 2009-09-17 13:48:10 -0500 | [diff] [blame] | 773 | static ssize_t cciss_show_lunid(struct device *dev, |
| 774 | struct device_attribute *attr, char *buf) |
| 775 | { |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 776 | drive_info_struct *drv = to_drv(dev); |
| 777 | struct ctlr_info *h = to_hba(drv->dev.parent); |
Stephen M. Cameron | ce84a8a | 2009-09-17 13:48:10 -0500 | [diff] [blame] | 778 | unsigned long flags; |
| 779 | unsigned char lunid[8]; |
| 780 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 781 | spin_lock_irqsave(&h->lock, flags); |
Stephen M. Cameron | ce84a8a | 2009-09-17 13:48:10 -0500 | [diff] [blame] | 782 | if (h->busy_configuring) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 783 | spin_unlock_irqrestore(&h->lock, flags); |
Stephen M. Cameron | ce84a8a | 2009-09-17 13:48:10 -0500 | [diff] [blame] | 784 | return -EBUSY; |
| 785 | } |
| 786 | if (!drv->heads) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 787 | spin_unlock_irqrestore(&h->lock, flags); |
Stephen M. Cameron | ce84a8a | 2009-09-17 13:48:10 -0500 | [diff] [blame] | 788 | return -ENOTTY; |
| 789 | } |
| 790 | memcpy(lunid, drv->LunID, sizeof(lunid)); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 791 | spin_unlock_irqrestore(&h->lock, flags); |
Stephen M. Cameron | ce84a8a | 2009-09-17 13:48:10 -0500 | [diff] [blame] | 792 | return snprintf(buf, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n", |
| 793 | lunid[0], lunid[1], lunid[2], lunid[3], |
| 794 | lunid[4], lunid[5], lunid[6], lunid[7]); |
| 795 | } |
Alex Chiang | 8ba95c6 | 2009-11-12 12:49:14 -0600 | [diff] [blame] | 796 | static DEVICE_ATTR(lunid, S_IRUGO, cciss_show_lunid, NULL); |
Stephen M. Cameron | ce84a8a | 2009-09-17 13:48:10 -0500 | [diff] [blame] | 797 | |
Stephen M. Cameron | 3ff1111 | 2009-09-17 13:48:21 -0500 | [diff] [blame] | 798 | static ssize_t cciss_show_raid_level(struct device *dev, |
| 799 | struct device_attribute *attr, char *buf) |
| 800 | { |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 801 | drive_info_struct *drv = to_drv(dev); |
| 802 | struct ctlr_info *h = to_hba(drv->dev.parent); |
Stephen M. Cameron | 3ff1111 | 2009-09-17 13:48:21 -0500 | [diff] [blame] | 803 | int raid; |
| 804 | unsigned long flags; |
| 805 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 806 | spin_lock_irqsave(&h->lock, flags); |
Stephen M. Cameron | 3ff1111 | 2009-09-17 13:48:21 -0500 | [diff] [blame] | 807 | if (h->busy_configuring) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 808 | spin_unlock_irqrestore(&h->lock, flags); |
Stephen M. Cameron | 3ff1111 | 2009-09-17 13:48:21 -0500 | [diff] [blame] | 809 | return -EBUSY; |
| 810 | } |
| 811 | raid = drv->raid_level; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 812 | spin_unlock_irqrestore(&h->lock, flags); |
Stephen M. Cameron | 3ff1111 | 2009-09-17 13:48:21 -0500 | [diff] [blame] | 813 | if (raid < 0 || raid > RAID_UNKNOWN) |
| 814 | raid = RAID_UNKNOWN; |
| 815 | |
| 816 | return snprintf(buf, strlen(raid_label[raid]) + 7, "RAID %s\n", |
| 817 | raid_label[raid]); |
| 818 | } |
Alex Chiang | 8ba95c6 | 2009-11-12 12:49:14 -0600 | [diff] [blame] | 819 | static DEVICE_ATTR(raid_level, S_IRUGO, cciss_show_raid_level, NULL); |
Stephen M. Cameron | 3ff1111 | 2009-09-17 13:48:21 -0500 | [diff] [blame] | 820 | |
Stephen M. Cameron | e272afe | 2009-09-17 13:48:26 -0500 | [diff] [blame] | 821 | static ssize_t cciss_show_usage_count(struct device *dev, |
| 822 | struct device_attribute *attr, char *buf) |
| 823 | { |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 824 | drive_info_struct *drv = to_drv(dev); |
| 825 | struct ctlr_info *h = to_hba(drv->dev.parent); |
Stephen M. Cameron | e272afe | 2009-09-17 13:48:26 -0500 | [diff] [blame] | 826 | unsigned long flags; |
| 827 | int count; |
| 828 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 829 | spin_lock_irqsave(&h->lock, flags); |
Stephen M. Cameron | e272afe | 2009-09-17 13:48:26 -0500 | [diff] [blame] | 830 | if (h->busy_configuring) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 831 | spin_unlock_irqrestore(&h->lock, flags); |
Stephen M. Cameron | e272afe | 2009-09-17 13:48:26 -0500 | [diff] [blame] | 832 | return -EBUSY; |
| 833 | } |
| 834 | count = drv->usage_count; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 835 | spin_unlock_irqrestore(&h->lock, flags); |
Stephen M. Cameron | e272afe | 2009-09-17 13:48:26 -0500 | [diff] [blame] | 836 | return snprintf(buf, 20, "%d\n", count); |
| 837 | } |
Alex Chiang | 8ba95c6 | 2009-11-12 12:49:14 -0600 | [diff] [blame] | 838 | static DEVICE_ATTR(usage_count, S_IRUGO, cciss_show_usage_count, NULL); |
Stephen M. Cameron | e272afe | 2009-09-17 13:48:26 -0500 | [diff] [blame] | 839 | |
Andrew Patterson | d6f4965 | 2009-09-17 13:47:03 -0500 | [diff] [blame] | 840 | static struct attribute *cciss_host_attrs[] = { |
| 841 | &dev_attr_rescan.attr, |
Stephen M. Cameron | 957c2ec | 2011-03-11 20:06:09 +0100 | [diff] [blame] | 842 | &dev_attr_resettable.attr, |
Joe Handzik | f963d27 | 2011-08-08 11:40:17 +0200 | [diff] [blame] | 843 | &dev_attr_transport_mode.attr, |
Andrew Patterson | d6f4965 | 2009-09-17 13:47:03 -0500 | [diff] [blame] | 844 | NULL |
| 845 | }; |
| 846 | |
| 847 | static struct attribute_group cciss_host_attr_group = { |
| 848 | .attrs = cciss_host_attrs, |
| 849 | }; |
| 850 | |
Jens Axboe | 9f792d9 | 2009-09-18 22:24:21 +0200 | [diff] [blame] | 851 | static const struct attribute_group *cciss_host_attr_groups[] = { |
Andrew Patterson | d6f4965 | 2009-09-17 13:47:03 -0500 | [diff] [blame] | 852 | &cciss_host_attr_group, |
| 853 | NULL |
| 854 | }; |
| 855 | |
| 856 | static struct device_type cciss_host_type = { |
| 857 | .name = "cciss_host", |
| 858 | .groups = cciss_host_attr_groups, |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 859 | .release = cciss_hba_release, |
Andrew Patterson | d6f4965 | 2009-09-17 13:47:03 -0500 | [diff] [blame] | 860 | }; |
| 861 | |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 862 | static struct attribute *cciss_dev_attrs[] = { |
| 863 | &dev_attr_unique_id.attr, |
| 864 | &dev_attr_model.attr, |
| 865 | &dev_attr_vendor.attr, |
| 866 | &dev_attr_rev.attr, |
Stephen M. Cameron | ce84a8a | 2009-09-17 13:48:10 -0500 | [diff] [blame] | 867 | &dev_attr_lunid.attr, |
Stephen M. Cameron | 3ff1111 | 2009-09-17 13:48:21 -0500 | [diff] [blame] | 868 | &dev_attr_raid_level.attr, |
Stephen M. Cameron | e272afe | 2009-09-17 13:48:26 -0500 | [diff] [blame] | 869 | &dev_attr_usage_count.attr, |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 870 | NULL |
| 871 | }; |
| 872 | |
| 873 | static struct attribute_group cciss_dev_attr_group = { |
| 874 | .attrs = cciss_dev_attrs, |
| 875 | }; |
| 876 | |
David Brownell | a4dbd67 | 2009-06-24 10:06:31 -0700 | [diff] [blame] | 877 | static const struct attribute_group *cciss_dev_attr_groups[] = { |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 878 | &cciss_dev_attr_group, |
| 879 | NULL |
| 880 | }; |
| 881 | |
| 882 | static struct device_type cciss_dev_type = { |
| 883 | .name = "cciss_device", |
| 884 | .groups = cciss_dev_attr_groups, |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 885 | .release = cciss_device_release, |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 886 | }; |
| 887 | |
| 888 | static struct bus_type cciss_bus_type = { |
| 889 | .name = "cciss", |
| 890 | }; |
| 891 | |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 892 | /* |
| 893 | * cciss_hba_release is called when the reference count |
| 894 | * of h->dev goes to zero. |
| 895 | */ |
| 896 | static void cciss_hba_release(struct device *dev) |
| 897 | { |
| 898 | /* |
| 899 | * nothing to do, but need this to avoid a warning |
| 900 | * about not having a release handler from lib/kref.c. |
| 901 | */ |
| 902 | } |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 903 | |
| 904 | /* |
| 905 | * Initialize sysfs entry for each controller. This sets up and registers |
| 906 | * the 'cciss#' directory for each individual controller under |
| 907 | * /sys/bus/pci/devices/<dev>/. |
| 908 | */ |
| 909 | static int cciss_create_hba_sysfs_entry(struct ctlr_info *h) |
| 910 | { |
| 911 | device_initialize(&h->dev); |
| 912 | h->dev.type = &cciss_host_type; |
| 913 | h->dev.bus = &cciss_bus_type; |
| 914 | dev_set_name(&h->dev, "%s", h->devname); |
| 915 | h->dev.parent = &h->pdev->dev; |
| 916 | |
| 917 | return device_add(&h->dev); |
| 918 | } |
| 919 | |
| 920 | /* |
| 921 | * Remove sysfs entries for an hba. |
| 922 | */ |
| 923 | static void cciss_destroy_hba_sysfs_entry(struct ctlr_info *h) |
| 924 | { |
| 925 | device_del(&h->dev); |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 926 | put_device(&h->dev); /* final put. */ |
| 927 | } |
| 928 | |
| 929 | /* cciss_device_release is called when the reference count |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 930 | * of h->drv[x]dev goes to zero. |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 931 | */ |
| 932 | static void cciss_device_release(struct device *dev) |
| 933 | { |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 934 | drive_info_struct *drv = to_drv(dev); |
| 935 | kfree(drv); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 936 | } |
| 937 | |
| 938 | /* |
| 939 | * Initialize sysfs for each logical drive. This sets up and registers |
| 940 | * the 'c#d#' directory for each individual logical drive under |
| 941 | * /sys/bus/pci/devices/<dev/ccis#/. We also create a link from |
| 942 | * /sys/block/cciss!c#d# to this entry. |
| 943 | */ |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 944 | static long cciss_create_ld_sysfs_entry(struct ctlr_info *h, |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 945 | int drv_index) |
| 946 | { |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 947 | struct device *dev; |
| 948 | |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 949 | if (h->drv[drv_index]->device_initialized) |
Stephen M. Cameron | 8ce5196 | 2009-09-17 13:47:34 -0500 | [diff] [blame] | 950 | return 0; |
| 951 | |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 952 | dev = &h->drv[drv_index]->dev; |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 953 | device_initialize(dev); |
| 954 | dev->type = &cciss_dev_type; |
| 955 | dev->bus = &cciss_bus_type; |
| 956 | dev_set_name(dev, "c%dd%d", h->ctlr, drv_index); |
| 957 | dev->parent = &h->dev; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 958 | h->drv[drv_index]->device_initialized = 1; |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 959 | return device_add(dev); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 960 | } |
| 961 | |
| 962 | /* |
| 963 | * Remove sysfs entries for a logical drive. |
| 964 | */ |
Stephen M. Cameron | 8ce5196 | 2009-09-17 13:47:34 -0500 | [diff] [blame] | 965 | static void cciss_destroy_ld_sysfs_entry(struct ctlr_info *h, int drv_index, |
| 966 | int ctlr_exiting) |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 967 | { |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 968 | struct device *dev = &h->drv[drv_index]->dev; |
Stephen M. Cameron | 8ce5196 | 2009-09-17 13:47:34 -0500 | [diff] [blame] | 969 | |
| 970 | /* special case for c*d0, we only destroy it on controller exit */ |
| 971 | if (drv_index == 0 && !ctlr_exiting) |
| 972 | return; |
| 973 | |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 974 | device_del(dev); |
| 975 | put_device(dev); /* the "final" put. */ |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 976 | h->drv[drv_index] = NULL; |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 977 | } |
| 978 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 979 | /* |
| 980 | * For operations that cannot sleep, a command block is allocated at init, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 981 | * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 982 | * which ones are free or in use. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 983 | */ |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 984 | static CommandList_struct *cmd_alloc(ctlr_info_t *h) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 985 | { |
| 986 | CommandList_struct *c; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 987 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 988 | u64bit temp64; |
| 989 | dma_addr_t cmd_dma_handle, err_dma_handle; |
| 990 | |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 991 | do { |
| 992 | i = find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds); |
| 993 | if (i == h->nr_cmds) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 994 | return NULL; |
Akinobu Mita | 1f118bc | 2012-11-08 16:12:22 -0800 | [diff] [blame] | 995 | } while (test_and_set_bit(i, h->cmd_pool_bits) != 0); |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 996 | c = h->cmd_pool + i; |
| 997 | memset(c, 0, sizeof(CommandList_struct)); |
| 998 | cmd_dma_handle = h->cmd_pool_dhandle + i * sizeof(CommandList_struct); |
| 999 | c->err_info = h->errinfo_pool + i; |
| 1000 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); |
| 1001 | err_dma_handle = h->errinfo_pool_dhandle |
| 1002 | + i * sizeof(ErrorInfo_struct); |
| 1003 | h->nr_allocs++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1004 | |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 1005 | c->cmdindex = i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1006 | |
Jens Axboe | e6e1ee9 | 2011-01-10 21:50:33 +0100 | [diff] [blame] | 1007 | INIT_LIST_HEAD(&c->list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1008 | c->busaddr = (__u32) cmd_dma_handle; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1009 | temp64.val = (__u64) err_dma_handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1010 | c->ErrDesc.Addr.lower = temp64.val32.lower; |
| 1011 | c->ErrDesc.Addr.upper = temp64.val32.upper; |
| 1012 | c->ErrDesc.Len = sizeof(ErrorInfo_struct); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1013 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1014 | c->ctlr = h->ctlr; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1015 | return c; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1016 | } |
| 1017 | |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 1018 | /* allocate a command using pci_alloc_consistent, used for ioctls, |
| 1019 | * etc., not for the main i/o path. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1020 | */ |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 1021 | static CommandList_struct *cmd_special_alloc(ctlr_info_t *h) |
| 1022 | { |
| 1023 | CommandList_struct *c; |
| 1024 | u64bit temp64; |
| 1025 | dma_addr_t cmd_dma_handle, err_dma_handle; |
| 1026 | |
Joe Perches | a5bbf61 | 2014-08-08 14:24:12 -0700 | [diff] [blame] | 1027 | c = pci_zalloc_consistent(h->pdev, sizeof(CommandList_struct), |
| 1028 | &cmd_dma_handle); |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 1029 | if (c == NULL) |
| 1030 | return NULL; |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 1031 | |
| 1032 | c->cmdindex = -1; |
| 1033 | |
Joe Perches | a5bbf61 | 2014-08-08 14:24:12 -0700 | [diff] [blame] | 1034 | c->err_info = pci_zalloc_consistent(h->pdev, sizeof(ErrorInfo_struct), |
| 1035 | &err_dma_handle); |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 1036 | |
| 1037 | if (c->err_info == NULL) { |
| 1038 | pci_free_consistent(h->pdev, |
| 1039 | sizeof(CommandList_struct), c, cmd_dma_handle); |
| 1040 | return NULL; |
| 1041 | } |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 1042 | |
Jens Axboe | e6e1ee9 | 2011-01-10 21:50:33 +0100 | [diff] [blame] | 1043 | INIT_LIST_HEAD(&c->list); |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 1044 | c->busaddr = (__u32) cmd_dma_handle; |
| 1045 | temp64.val = (__u64) err_dma_handle; |
| 1046 | c->ErrDesc.Addr.lower = temp64.val32.lower; |
| 1047 | c->ErrDesc.Addr.upper = temp64.val32.upper; |
| 1048 | c->ErrDesc.Len = sizeof(ErrorInfo_struct); |
| 1049 | |
| 1050 | c->ctlr = h->ctlr; |
| 1051 | return c; |
| 1052 | } |
| 1053 | |
| 1054 | static void cmd_free(ctlr_info_t *h, CommandList_struct *c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1055 | { |
| 1056 | int i; |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 1057 | |
| 1058 | i = c - h->cmd_pool; |
Akinobu Mita | 1f118bc | 2012-11-08 16:12:22 -0800 | [diff] [blame] | 1059 | clear_bit(i, h->cmd_pool_bits); |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 1060 | h->nr_frees++; |
| 1061 | } |
| 1062 | |
| 1063 | static void cmd_special_free(ctlr_info_t *h, CommandList_struct *c) |
| 1064 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1065 | u64bit temp64; |
| 1066 | |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 1067 | temp64.val32.lower = c->ErrDesc.Addr.lower; |
| 1068 | temp64.val32.upper = c->ErrDesc.Addr.upper; |
| 1069 | pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct), |
| 1070 | c->err_info, (dma_addr_t) temp64.val); |
Stephen M. Cameron | 1601113 | 2011-03-12 10:02:21 +0100 | [diff] [blame] | 1071 | pci_free_consistent(h->pdev, sizeof(CommandList_struct), c, |
| 1072 | (dma_addr_t) cciss_tag_discard_error_bits(h, (u32) c->busaddr)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1073 | } |
| 1074 | |
| 1075 | static inline ctlr_info_t *get_host(struct gendisk *disk) |
| 1076 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1077 | return disk->queue->queuedata; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1078 | } |
| 1079 | |
| 1080 | static inline drive_info_struct *get_drv(struct gendisk *disk) |
| 1081 | { |
| 1082 | return disk->private_data; |
| 1083 | } |
| 1084 | |
| 1085 | /* |
| 1086 | * Open. Make sure the device is really there. |
| 1087 | */ |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1088 | static int cciss_open(struct block_device *bdev, fmode_t mode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1089 | { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1090 | ctlr_info_t *h = get_host(bdev->bd_disk); |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1091 | drive_info_struct *drv = get_drv(bdev->bd_disk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1092 | |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 1093 | dev_dbg(&h->pdev->dev, "cciss_open %s\n", bdev->bd_disk->disk_name); |
Stephen M. Cameron | 2e04398 | 2009-09-17 13:48:05 -0500 | [diff] [blame] | 1094 | if (drv->busy_configuring) |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1095 | return -EBUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1096 | /* |
| 1097 | * Root is allowed to open raw volume zero even if it's not configured |
| 1098 | * so array config can still work. Root is also allowed to open any |
| 1099 | * volume that has a LUN ID, so it can issue IOCTL to reread the |
| 1100 | * disk information. I don't think I really like this |
| 1101 | * but I'm already using way to many device nodes to claim another one |
| 1102 | * for "raw controller". |
| 1103 | */ |
Mike Miller | 7a06f78 | 2006-12-06 20:35:08 -0800 | [diff] [blame] | 1104 | if (drv->heads == 0) { |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1105 | if (MINOR(bdev->bd_dev) != 0) { /* not node 0? */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1106 | /* if not node 0 make sure it is a partition = 0 */ |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1107 | if (MINOR(bdev->bd_dev) & 0x0f) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1108 | return -ENXIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1109 | /* if it is, make sure we have a LUN ID */ |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 1110 | } else if (memcmp(drv->LunID, CTLR_LUNID, |
| 1111 | sizeof(drv->LunID))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1112 | return -ENXIO; |
| 1113 | } |
| 1114 | } |
| 1115 | if (!capable(CAP_SYS_ADMIN)) |
| 1116 | return -EPERM; |
| 1117 | } |
| 1118 | drv->usage_count++; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1119 | h->usage_count++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1120 | return 0; |
| 1121 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1122 | |
Arnd Bergmann | 6e9624b | 2010-08-07 18:25:34 +0200 | [diff] [blame] | 1123 | static int cciss_unlocked_open(struct block_device *bdev, fmode_t mode) |
| 1124 | { |
| 1125 | int ret; |
| 1126 | |
Arnd Bergmann | 2a48fc0 | 2010-06-02 14:28:52 +0200 | [diff] [blame] | 1127 | mutex_lock(&cciss_mutex); |
Arnd Bergmann | 6e9624b | 2010-08-07 18:25:34 +0200 | [diff] [blame] | 1128 | ret = cciss_open(bdev, mode); |
Arnd Bergmann | 2a48fc0 | 2010-06-02 14:28:52 +0200 | [diff] [blame] | 1129 | mutex_unlock(&cciss_mutex); |
Arnd Bergmann | 6e9624b | 2010-08-07 18:25:34 +0200 | [diff] [blame] | 1130 | |
| 1131 | return ret; |
| 1132 | } |
| 1133 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1134 | /* |
| 1135 | * Close. Sync first. |
| 1136 | */ |
Al Viro | db2a144 | 2013-05-05 21:52:57 -0400 | [diff] [blame] | 1137 | static void cciss_release(struct gendisk *disk, fmode_t mode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1138 | { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1139 | ctlr_info_t *h; |
Arnd Bergmann | 6e9624b | 2010-08-07 18:25:34 +0200 | [diff] [blame] | 1140 | drive_info_struct *drv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1141 | |
Arnd Bergmann | 2a48fc0 | 2010-06-02 14:28:52 +0200 | [diff] [blame] | 1142 | mutex_lock(&cciss_mutex); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1143 | h = get_host(disk); |
Arnd Bergmann | 6e9624b | 2010-08-07 18:25:34 +0200 | [diff] [blame] | 1144 | drv = get_drv(disk); |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 1145 | dev_dbg(&h->pdev->dev, "cciss_release %s\n", disk->disk_name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1146 | drv->usage_count--; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1147 | h->usage_count--; |
Arnd Bergmann | 2a48fc0 | 2010-06-02 14:28:52 +0200 | [diff] [blame] | 1148 | mutex_unlock(&cciss_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1149 | } |
| 1150 | |
Arnd Bergmann | 8a6cfeb | 2010-07-08 10:18:46 +0200 | [diff] [blame] | 1151 | #ifdef CONFIG_COMPAT |
| 1152 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1153 | static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode, |
| 1154 | unsigned cmd, unsigned long arg); |
| 1155 | static int cciss_ioctl32_big_passthru(struct block_device *bdev, fmode_t mode, |
| 1156 | unsigned cmd, unsigned long arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1157 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1158 | static int cciss_compat_ioctl(struct block_device *bdev, fmode_t mode, |
| 1159 | unsigned cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1160 | { |
| 1161 | switch (cmd) { |
| 1162 | case CCISS_GETPCIINFO: |
| 1163 | case CCISS_GETINTINFO: |
| 1164 | case CCISS_SETINTINFO: |
| 1165 | case CCISS_GETNODENAME: |
| 1166 | case CCISS_SETNODENAME: |
| 1167 | case CCISS_GETHEARTBEAT: |
| 1168 | case CCISS_GETBUSTYPES: |
| 1169 | case CCISS_GETFIRMVER: |
| 1170 | case CCISS_GETDRIVVER: |
| 1171 | case CCISS_REVALIDVOLS: |
| 1172 | case CCISS_DEREGDISK: |
| 1173 | case CCISS_REGNEWDISK: |
| 1174 | case CCISS_REGNEWD: |
| 1175 | case CCISS_RESCANDISK: |
| 1176 | case CCISS_GETLUNINFO: |
Stephen M. Cameron | 03f47e8 | 2013-06-12 14:04:47 -0700 | [diff] [blame] | 1177 | return cciss_ioctl(bdev, mode, cmd, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1178 | |
| 1179 | case CCISS_PASSTHRU32: |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1180 | return cciss_ioctl32_passthru(bdev, mode, cmd, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1181 | case CCISS_BIG_PASSTHRU32: |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1182 | return cciss_ioctl32_big_passthru(bdev, mode, cmd, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1183 | |
| 1184 | default: |
| 1185 | return -ENOIOCTLCMD; |
| 1186 | } |
| 1187 | } |
| 1188 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1189 | static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode, |
| 1190 | unsigned cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1191 | { |
| 1192 | IOCTL32_Command_struct __user *arg32 = |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1193 | (IOCTL32_Command_struct __user *) arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1194 | IOCTL_Command_struct arg64; |
| 1195 | IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64)); |
| 1196 | int err; |
| 1197 | u32 cp; |
| 1198 | |
Dan Carpenter | 58f09e0 | 2013-09-24 15:27:45 -0700 | [diff] [blame] | 1199 | memset(&arg64, 0, sizeof(arg64)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1200 | err = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1201 | err |= |
| 1202 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, |
| 1203 | sizeof(arg64.LUN_info)); |
| 1204 | err |= |
| 1205 | copy_from_user(&arg64.Request, &arg32->Request, |
| 1206 | sizeof(arg64.Request)); |
| 1207 | err |= |
| 1208 | copy_from_user(&arg64.error_info, &arg32->error_info, |
| 1209 | sizeof(arg64.error_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1210 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
| 1211 | err |= get_user(cp, &arg32->buf); |
| 1212 | arg64.buf = compat_ptr(cp); |
| 1213 | err |= copy_to_user(p, &arg64, sizeof(arg64)); |
| 1214 | |
| 1215 | if (err) |
| 1216 | return -EFAULT; |
| 1217 | |
Stephen M. Cameron | 03f47e8 | 2013-06-12 14:04:47 -0700 | [diff] [blame] | 1218 | err = cciss_ioctl(bdev, mode, CCISS_PASSTHRU, (unsigned long)p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1219 | if (err) |
| 1220 | return err; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1221 | err |= |
| 1222 | copy_in_user(&arg32->error_info, &p->error_info, |
| 1223 | sizeof(arg32->error_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1224 | if (err) |
| 1225 | return -EFAULT; |
| 1226 | return err; |
| 1227 | } |
| 1228 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1229 | static int cciss_ioctl32_big_passthru(struct block_device *bdev, fmode_t mode, |
| 1230 | unsigned cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1231 | { |
| 1232 | BIG_IOCTL32_Command_struct __user *arg32 = |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1233 | (BIG_IOCTL32_Command_struct __user *) arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1234 | BIG_IOCTL_Command_struct arg64; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1235 | BIG_IOCTL_Command_struct __user *p = |
| 1236 | compat_alloc_user_space(sizeof(arg64)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1237 | int err; |
| 1238 | u32 cp; |
| 1239 | |
Vasiliy Kulikov | 7ab5118 | 2010-10-28 06:31:55 -0600 | [diff] [blame] | 1240 | memset(&arg64, 0, sizeof(arg64)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1241 | err = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1242 | err |= |
| 1243 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, |
| 1244 | sizeof(arg64.LUN_info)); |
| 1245 | err |= |
| 1246 | copy_from_user(&arg64.Request, &arg32->Request, |
| 1247 | sizeof(arg64.Request)); |
| 1248 | err |= |
| 1249 | copy_from_user(&arg64.error_info, &arg32->error_info, |
| 1250 | sizeof(arg64.error_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1251 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
| 1252 | err |= get_user(arg64.malloc_size, &arg32->malloc_size); |
| 1253 | err |= get_user(cp, &arg32->buf); |
| 1254 | arg64.buf = compat_ptr(cp); |
| 1255 | err |= copy_to_user(p, &arg64, sizeof(arg64)); |
| 1256 | |
| 1257 | if (err) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1258 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1259 | |
Stephen M. Cameron | 03f47e8 | 2013-06-12 14:04:47 -0700 | [diff] [blame] | 1260 | err = cciss_ioctl(bdev, mode, CCISS_BIG_PASSTHRU, (unsigned long)p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1261 | if (err) |
| 1262 | return err; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1263 | err |= |
| 1264 | copy_in_user(&arg32->error_info, &p->error_info, |
| 1265 | sizeof(arg32->error_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1266 | if (err) |
| 1267 | return -EFAULT; |
| 1268 | return err; |
| 1269 | } |
| 1270 | #endif |
Christoph Hellwig | a885c8c | 2006-01-08 01:02:50 -0800 | [diff] [blame] | 1271 | |
| 1272 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo) |
| 1273 | { |
| 1274 | drive_info_struct *drv = get_drv(bdev->bd_disk); |
| 1275 | |
| 1276 | if (!drv->cylinders) |
| 1277 | return -ENXIO; |
| 1278 | |
| 1279 | geo->heads = drv->heads; |
| 1280 | geo->sectors = drv->sectors; |
| 1281 | geo->cylinders = drv->cylinders; |
| 1282 | return 0; |
| 1283 | } |
| 1284 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1285 | static void check_ioctl_unit_attention(ctlr_info_t *h, CommandList_struct *c) |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 1286 | { |
| 1287 | if (c->err_info->CommandStatus == CMD_TARGET_STATUS && |
| 1288 | c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1289 | (void)check_for_unit_attention(h, c); |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 1290 | } |
Stephen M. Cameron | 0a25a5a | 2010-08-26 13:55:34 -0500 | [diff] [blame] | 1291 | |
| 1292 | static int cciss_getpciinfo(ctlr_info_t *h, void __user *argp) |
| 1293 | { |
| 1294 | cciss_pci_info_struct pciinfo; |
| 1295 | |
| 1296 | if (!argp) |
| 1297 | return -EINVAL; |
| 1298 | pciinfo.domain = pci_domain_nr(h->pdev->bus); |
| 1299 | pciinfo.bus = h->pdev->bus->number; |
| 1300 | pciinfo.dev_fn = h->pdev->devfn; |
| 1301 | pciinfo.board_id = h->board_id; |
| 1302 | if (copy_to_user(argp, &pciinfo, sizeof(cciss_pci_info_struct))) |
| 1303 | return -EFAULT; |
| 1304 | return 0; |
| 1305 | } |
| 1306 | |
Stephen M. Cameron | 576e661 | 2010-08-26 13:55:39 -0500 | [diff] [blame] | 1307 | static int cciss_getintinfo(ctlr_info_t *h, void __user *argp) |
| 1308 | { |
| 1309 | cciss_coalint_struct intinfo; |
Stephen M. Cameron | 03f47e8 | 2013-06-12 14:04:47 -0700 | [diff] [blame] | 1310 | unsigned long flags; |
Stephen M. Cameron | 576e661 | 2010-08-26 13:55:39 -0500 | [diff] [blame] | 1311 | |
| 1312 | if (!argp) |
| 1313 | return -EINVAL; |
Stephen M. Cameron | 03f47e8 | 2013-06-12 14:04:47 -0700 | [diff] [blame] | 1314 | spin_lock_irqsave(&h->lock, flags); |
Stephen M. Cameron | 576e661 | 2010-08-26 13:55:39 -0500 | [diff] [blame] | 1315 | intinfo.delay = readl(&h->cfgtable->HostWrite.CoalIntDelay); |
| 1316 | intinfo.count = readl(&h->cfgtable->HostWrite.CoalIntCount); |
Stephen M. Cameron | 03f47e8 | 2013-06-12 14:04:47 -0700 | [diff] [blame] | 1317 | spin_unlock_irqrestore(&h->lock, flags); |
Stephen M. Cameron | 576e661 | 2010-08-26 13:55:39 -0500 | [diff] [blame] | 1318 | if (copy_to_user |
| 1319 | (argp, &intinfo, sizeof(cciss_coalint_struct))) |
| 1320 | return -EFAULT; |
| 1321 | return 0; |
| 1322 | } |
| 1323 | |
Stephen M. Cameron | 4c800ee | 2010-08-26 13:55:44 -0500 | [diff] [blame] | 1324 | static int cciss_setintinfo(ctlr_info_t *h, void __user *argp) |
| 1325 | { |
| 1326 | cciss_coalint_struct intinfo; |
| 1327 | unsigned long flags; |
| 1328 | int i; |
| 1329 | |
| 1330 | if (!argp) |
| 1331 | return -EINVAL; |
| 1332 | if (!capable(CAP_SYS_ADMIN)) |
| 1333 | return -EPERM; |
| 1334 | if (copy_from_user(&intinfo, argp, sizeof(intinfo))) |
| 1335 | return -EFAULT; |
| 1336 | if ((intinfo.delay == 0) && (intinfo.count == 0)) |
| 1337 | return -EINVAL; |
| 1338 | spin_lock_irqsave(&h->lock, flags); |
| 1339 | /* Update the field, and then ring the doorbell */ |
| 1340 | writel(intinfo.delay, &(h->cfgtable->HostWrite.CoalIntDelay)); |
| 1341 | writel(intinfo.count, &(h->cfgtable->HostWrite.CoalIntCount)); |
| 1342 | writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); |
| 1343 | |
| 1344 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { |
| 1345 | if (!(readl(h->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq)) |
| 1346 | break; |
| 1347 | udelay(1000); /* delay and try again */ |
| 1348 | } |
| 1349 | spin_unlock_irqrestore(&h->lock, flags); |
| 1350 | if (i >= MAX_IOCTL_CONFIG_WAIT) |
| 1351 | return -EAGAIN; |
| 1352 | return 0; |
| 1353 | } |
| 1354 | |
Stephen M. Cameron | 2521610 | 2010-08-26 13:55:49 -0500 | [diff] [blame] | 1355 | static int cciss_getnodename(ctlr_info_t *h, void __user *argp) |
| 1356 | { |
| 1357 | NodeName_type NodeName; |
Stephen M. Cameron | 03f47e8 | 2013-06-12 14:04:47 -0700 | [diff] [blame] | 1358 | unsigned long flags; |
Stephen M. Cameron | 2521610 | 2010-08-26 13:55:49 -0500 | [diff] [blame] | 1359 | int i; |
| 1360 | |
| 1361 | if (!argp) |
| 1362 | return -EINVAL; |
Stephen M. Cameron | 03f47e8 | 2013-06-12 14:04:47 -0700 | [diff] [blame] | 1363 | spin_lock_irqsave(&h->lock, flags); |
Stephen M. Cameron | 2521610 | 2010-08-26 13:55:49 -0500 | [diff] [blame] | 1364 | for (i = 0; i < 16; i++) |
| 1365 | NodeName[i] = readb(&h->cfgtable->ServerName[i]); |
Stephen M. Cameron | 03f47e8 | 2013-06-12 14:04:47 -0700 | [diff] [blame] | 1366 | spin_unlock_irqrestore(&h->lock, flags); |
Stephen M. Cameron | 2521610 | 2010-08-26 13:55:49 -0500 | [diff] [blame] | 1367 | if (copy_to_user(argp, NodeName, sizeof(NodeName_type))) |
| 1368 | return -EFAULT; |
| 1369 | return 0; |
| 1370 | } |
| 1371 | |
Stephen M. Cameron | 4f43f32 | 2010-08-26 13:55:54 -0500 | [diff] [blame] | 1372 | static int cciss_setnodename(ctlr_info_t *h, void __user *argp) |
| 1373 | { |
| 1374 | NodeName_type NodeName; |
| 1375 | unsigned long flags; |
| 1376 | int i; |
| 1377 | |
| 1378 | if (!argp) |
| 1379 | return -EINVAL; |
| 1380 | if (!capable(CAP_SYS_ADMIN)) |
| 1381 | return -EPERM; |
| 1382 | if (copy_from_user(NodeName, argp, sizeof(NodeName_type))) |
| 1383 | return -EFAULT; |
| 1384 | spin_lock_irqsave(&h->lock, flags); |
| 1385 | /* Update the field, and then ring the doorbell */ |
| 1386 | for (i = 0; i < 16; i++) |
| 1387 | writeb(NodeName[i], &h->cfgtable->ServerName[i]); |
| 1388 | writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); |
| 1389 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { |
| 1390 | if (!(readl(h->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq)) |
| 1391 | break; |
| 1392 | udelay(1000); /* delay and try again */ |
| 1393 | } |
| 1394 | spin_unlock_irqrestore(&h->lock, flags); |
| 1395 | if (i >= MAX_IOCTL_CONFIG_WAIT) |
| 1396 | return -EAGAIN; |
| 1397 | return 0; |
| 1398 | } |
| 1399 | |
Stephen M. Cameron | 93c7493 | 2010-08-26 13:55:59 -0500 | [diff] [blame] | 1400 | static int cciss_getheartbeat(ctlr_info_t *h, void __user *argp) |
| 1401 | { |
| 1402 | Heartbeat_type heartbeat; |
Stephen M. Cameron | 03f47e8 | 2013-06-12 14:04:47 -0700 | [diff] [blame] | 1403 | unsigned long flags; |
Stephen M. Cameron | 93c7493 | 2010-08-26 13:55:59 -0500 | [diff] [blame] | 1404 | |
| 1405 | if (!argp) |
| 1406 | return -EINVAL; |
Stephen M. Cameron | 03f47e8 | 2013-06-12 14:04:47 -0700 | [diff] [blame] | 1407 | spin_lock_irqsave(&h->lock, flags); |
Stephen M. Cameron | 93c7493 | 2010-08-26 13:55:59 -0500 | [diff] [blame] | 1408 | heartbeat = readl(&h->cfgtable->HeartBeat); |
Stephen M. Cameron | 03f47e8 | 2013-06-12 14:04:47 -0700 | [diff] [blame] | 1409 | spin_unlock_irqrestore(&h->lock, flags); |
Stephen M. Cameron | 93c7493 | 2010-08-26 13:55:59 -0500 | [diff] [blame] | 1410 | if (copy_to_user(argp, &heartbeat, sizeof(Heartbeat_type))) |
| 1411 | return -EFAULT; |
| 1412 | return 0; |
| 1413 | } |
| 1414 | |
Stephen M. Cameron | d18dfad | 2010-08-26 13:56:05 -0500 | [diff] [blame] | 1415 | static int cciss_getbustypes(ctlr_info_t *h, void __user *argp) |
| 1416 | { |
| 1417 | BusTypes_type BusTypes; |
Stephen M. Cameron | 03f47e8 | 2013-06-12 14:04:47 -0700 | [diff] [blame] | 1418 | unsigned long flags; |
Stephen M. Cameron | d18dfad | 2010-08-26 13:56:05 -0500 | [diff] [blame] | 1419 | |
| 1420 | if (!argp) |
| 1421 | return -EINVAL; |
Stephen M. Cameron | 03f47e8 | 2013-06-12 14:04:47 -0700 | [diff] [blame] | 1422 | spin_lock_irqsave(&h->lock, flags); |
Stephen M. Cameron | d18dfad | 2010-08-26 13:56:05 -0500 | [diff] [blame] | 1423 | BusTypes = readl(&h->cfgtable->BusTypes); |
Stephen M. Cameron | 03f47e8 | 2013-06-12 14:04:47 -0700 | [diff] [blame] | 1424 | spin_unlock_irqrestore(&h->lock, flags); |
Stephen M. Cameron | d18dfad | 2010-08-26 13:56:05 -0500 | [diff] [blame] | 1425 | if (copy_to_user(argp, &BusTypes, sizeof(BusTypes_type))) |
| 1426 | return -EFAULT; |
| 1427 | return 0; |
| 1428 | } |
| 1429 | |
Stephen M. Cameron | 8a4f7fb | 2010-08-26 13:56:10 -0500 | [diff] [blame] | 1430 | static int cciss_getfirmver(ctlr_info_t *h, void __user *argp) |
| 1431 | { |
| 1432 | FirmwareVer_type firmware; |
| 1433 | |
| 1434 | if (!argp) |
| 1435 | return -EINVAL; |
| 1436 | memcpy(firmware, h->firm_ver, 4); |
| 1437 | |
| 1438 | if (copy_to_user |
| 1439 | (argp, firmware, sizeof(FirmwareVer_type))) |
| 1440 | return -EFAULT; |
| 1441 | return 0; |
| 1442 | } |
| 1443 | |
Stephen M. Cameron | c525919 | 2010-08-26 13:56:15 -0500 | [diff] [blame] | 1444 | static int cciss_getdrivver(ctlr_info_t *h, void __user *argp) |
| 1445 | { |
| 1446 | DriverVer_type DriverVer = DRIVER_VERSION; |
| 1447 | |
| 1448 | if (!argp) |
| 1449 | return -EINVAL; |
| 1450 | if (copy_to_user(argp, &DriverVer, sizeof(DriverVer_type))) |
| 1451 | return -EFAULT; |
| 1452 | return 0; |
| 1453 | } |
| 1454 | |
Stephen M. Cameron | 0894b32 | 2010-08-26 13:56:20 -0500 | [diff] [blame] | 1455 | static int cciss_getluninfo(ctlr_info_t *h, |
| 1456 | struct gendisk *disk, void __user *argp) |
| 1457 | { |
| 1458 | LogvolInfo_struct luninfo; |
| 1459 | drive_info_struct *drv = get_drv(disk); |
| 1460 | |
| 1461 | if (!argp) |
| 1462 | return -EINVAL; |
| 1463 | memcpy(&luninfo.LunID, drv->LunID, sizeof(luninfo.LunID)); |
| 1464 | luninfo.num_opens = drv->usage_count; |
| 1465 | luninfo.num_parts = 0; |
| 1466 | if (copy_to_user(argp, &luninfo, sizeof(LogvolInfo_struct))) |
| 1467 | return -EFAULT; |
| 1468 | return 0; |
| 1469 | } |
| 1470 | |
Stephen M. Cameron | f32f125 | 2010-08-26 13:56:25 -0500 | [diff] [blame] | 1471 | static int cciss_passthru(ctlr_info_t *h, void __user *argp) |
| 1472 | { |
| 1473 | IOCTL_Command_struct iocommand; |
| 1474 | CommandList_struct *c; |
| 1475 | char *buff = NULL; |
| 1476 | u64bit temp64; |
| 1477 | DECLARE_COMPLETION_ONSTACK(wait); |
| 1478 | |
| 1479 | if (!argp) |
| 1480 | return -EINVAL; |
| 1481 | |
| 1482 | if (!capable(CAP_SYS_RAWIO)) |
| 1483 | return -EPERM; |
| 1484 | |
| 1485 | if (copy_from_user |
| 1486 | (&iocommand, argp, sizeof(IOCTL_Command_struct))) |
| 1487 | return -EFAULT; |
| 1488 | if ((iocommand.buf_size < 1) && |
| 1489 | (iocommand.Request.Type.Direction != XFER_NONE)) { |
| 1490 | return -EINVAL; |
| 1491 | } |
| 1492 | if (iocommand.buf_size > 0) { |
| 1493 | buff = kmalloc(iocommand.buf_size, GFP_KERNEL); |
| 1494 | if (buff == NULL) |
| 1495 | return -EFAULT; |
| 1496 | } |
| 1497 | if (iocommand.Request.Type.Direction == XFER_WRITE) { |
| 1498 | /* Copy the data into the buffer we created */ |
| 1499 | if (copy_from_user(buff, iocommand.buf, iocommand.buf_size)) { |
| 1500 | kfree(buff); |
| 1501 | return -EFAULT; |
| 1502 | } |
| 1503 | } else { |
| 1504 | memset(buff, 0, iocommand.buf_size); |
| 1505 | } |
| 1506 | c = cmd_special_alloc(h); |
| 1507 | if (!c) { |
| 1508 | kfree(buff); |
| 1509 | return -ENOMEM; |
| 1510 | } |
| 1511 | /* Fill in the command type */ |
| 1512 | c->cmd_type = CMD_IOCTL_PEND; |
| 1513 | /* Fill in Command Header */ |
| 1514 | c->Header.ReplyQueue = 0; /* unused in simple mode */ |
| 1515 | if (iocommand.buf_size > 0) { /* buffer to fill */ |
| 1516 | c->Header.SGList = 1; |
| 1517 | c->Header.SGTotal = 1; |
| 1518 | } else { /* no buffers to fill */ |
| 1519 | c->Header.SGList = 0; |
| 1520 | c->Header.SGTotal = 0; |
| 1521 | } |
| 1522 | c->Header.LUN = iocommand.LUN_info; |
| 1523 | /* use the kernel address the cmd block for tag */ |
| 1524 | c->Header.Tag.lower = c->busaddr; |
| 1525 | |
| 1526 | /* Fill in Request block */ |
| 1527 | c->Request = iocommand.Request; |
| 1528 | |
| 1529 | /* Fill in the scatter gather information */ |
| 1530 | if (iocommand.buf_size > 0) { |
| 1531 | temp64.val = pci_map_single(h->pdev, buff, |
| 1532 | iocommand.buf_size, PCI_DMA_BIDIRECTIONAL); |
| 1533 | c->SG[0].Addr.lower = temp64.val32.lower; |
| 1534 | c->SG[0].Addr.upper = temp64.val32.upper; |
| 1535 | c->SG[0].Len = iocommand.buf_size; |
| 1536 | c->SG[0].Ext = 0; /* we are not chaining */ |
| 1537 | } |
| 1538 | c->waiting = &wait; |
| 1539 | |
| 1540 | enqueue_cmd_and_start_io(h, c); |
| 1541 | wait_for_completion(&wait); |
| 1542 | |
| 1543 | /* unlock the buffers from DMA */ |
| 1544 | temp64.val32.lower = c->SG[0].Addr.lower; |
| 1545 | temp64.val32.upper = c->SG[0].Addr.upper; |
| 1546 | pci_unmap_single(h->pdev, (dma_addr_t) temp64.val, iocommand.buf_size, |
| 1547 | PCI_DMA_BIDIRECTIONAL); |
| 1548 | check_ioctl_unit_attention(h, c); |
| 1549 | |
| 1550 | /* Copy the error information out */ |
| 1551 | iocommand.error_info = *(c->err_info); |
| 1552 | if (copy_to_user(argp, &iocommand, sizeof(IOCTL_Command_struct))) { |
| 1553 | kfree(buff); |
| 1554 | cmd_special_free(h, c); |
| 1555 | return -EFAULT; |
| 1556 | } |
| 1557 | |
| 1558 | if (iocommand.Request.Type.Direction == XFER_READ) { |
| 1559 | /* Copy the data out of the buffer we created */ |
| 1560 | if (copy_to_user(iocommand.buf, buff, iocommand.buf_size)) { |
| 1561 | kfree(buff); |
| 1562 | cmd_special_free(h, c); |
| 1563 | return -EFAULT; |
| 1564 | } |
| 1565 | } |
| 1566 | kfree(buff); |
| 1567 | cmd_special_free(h, c); |
| 1568 | return 0; |
| 1569 | } |
| 1570 | |
Stephen M. Cameron | 0c9f5ba | 2010-08-26 13:56:30 -0500 | [diff] [blame] | 1571 | static int cciss_bigpassthru(ctlr_info_t *h, void __user *argp) |
| 1572 | { |
| 1573 | BIG_IOCTL_Command_struct *ioc; |
| 1574 | CommandList_struct *c; |
| 1575 | unsigned char **buff = NULL; |
| 1576 | int *buff_size = NULL; |
| 1577 | u64bit temp64; |
| 1578 | BYTE sg_used = 0; |
| 1579 | int status = 0; |
| 1580 | int i; |
| 1581 | DECLARE_COMPLETION_ONSTACK(wait); |
| 1582 | __u32 left; |
| 1583 | __u32 sz; |
| 1584 | BYTE __user *data_ptr; |
| 1585 | |
| 1586 | if (!argp) |
| 1587 | return -EINVAL; |
| 1588 | if (!capable(CAP_SYS_RAWIO)) |
| 1589 | return -EPERM; |
Stephen M. Cameron | fcab1c1 | 2011-03-12 10:02:24 +0100 | [diff] [blame] | 1590 | ioc = kmalloc(sizeof(*ioc), GFP_KERNEL); |
Stephen M. Cameron | 0c9f5ba | 2010-08-26 13:56:30 -0500 | [diff] [blame] | 1591 | if (!ioc) { |
| 1592 | status = -ENOMEM; |
| 1593 | goto cleanup1; |
| 1594 | } |
| 1595 | if (copy_from_user(ioc, argp, sizeof(*ioc))) { |
| 1596 | status = -EFAULT; |
| 1597 | goto cleanup1; |
| 1598 | } |
| 1599 | if ((ioc->buf_size < 1) && |
| 1600 | (ioc->Request.Type.Direction != XFER_NONE)) { |
| 1601 | status = -EINVAL; |
| 1602 | goto cleanup1; |
| 1603 | } |
| 1604 | /* Check kmalloc limits using all SGs */ |
| 1605 | if (ioc->malloc_size > MAX_KMALLOC_SIZE) { |
| 1606 | status = -EINVAL; |
| 1607 | goto cleanup1; |
| 1608 | } |
| 1609 | if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) { |
| 1610 | status = -EINVAL; |
| 1611 | goto cleanup1; |
| 1612 | } |
| 1613 | buff = kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL); |
| 1614 | if (!buff) { |
| 1615 | status = -ENOMEM; |
| 1616 | goto cleanup1; |
| 1617 | } |
| 1618 | buff_size = kmalloc(MAXSGENTRIES * sizeof(int), GFP_KERNEL); |
| 1619 | if (!buff_size) { |
| 1620 | status = -ENOMEM; |
| 1621 | goto cleanup1; |
| 1622 | } |
| 1623 | left = ioc->buf_size; |
| 1624 | data_ptr = ioc->buf; |
| 1625 | while (left) { |
| 1626 | sz = (left > ioc->malloc_size) ? ioc->malloc_size : left; |
| 1627 | buff_size[sg_used] = sz; |
| 1628 | buff[sg_used] = kmalloc(sz, GFP_KERNEL); |
| 1629 | if (buff[sg_used] == NULL) { |
| 1630 | status = -ENOMEM; |
| 1631 | goto cleanup1; |
| 1632 | } |
| 1633 | if (ioc->Request.Type.Direction == XFER_WRITE) { |
| 1634 | if (copy_from_user(buff[sg_used], data_ptr, sz)) { |
| 1635 | status = -EFAULT; |
| 1636 | goto cleanup1; |
| 1637 | } |
| 1638 | } else { |
| 1639 | memset(buff[sg_used], 0, sz); |
| 1640 | } |
| 1641 | left -= sz; |
| 1642 | data_ptr += sz; |
| 1643 | sg_used++; |
| 1644 | } |
| 1645 | c = cmd_special_alloc(h); |
| 1646 | if (!c) { |
| 1647 | status = -ENOMEM; |
| 1648 | goto cleanup1; |
| 1649 | } |
| 1650 | c->cmd_type = CMD_IOCTL_PEND; |
| 1651 | c->Header.ReplyQueue = 0; |
Stephen M. Cameron | fcfb5c0 | 2010-08-26 13:56:35 -0500 | [diff] [blame] | 1652 | c->Header.SGList = sg_used; |
| 1653 | c->Header.SGTotal = sg_used; |
Stephen M. Cameron | 0c9f5ba | 2010-08-26 13:56:30 -0500 | [diff] [blame] | 1654 | c->Header.LUN = ioc->LUN_info; |
| 1655 | c->Header.Tag.lower = c->busaddr; |
| 1656 | |
| 1657 | c->Request = ioc->Request; |
Stephen M. Cameron | fcfb5c0 | 2010-08-26 13:56:35 -0500 | [diff] [blame] | 1658 | for (i = 0; i < sg_used; i++) { |
| 1659 | temp64.val = pci_map_single(h->pdev, buff[i], buff_size[i], |
Stephen M. Cameron | 0c9f5ba | 2010-08-26 13:56:30 -0500 | [diff] [blame] | 1660 | PCI_DMA_BIDIRECTIONAL); |
Stephen M. Cameron | fcfb5c0 | 2010-08-26 13:56:35 -0500 | [diff] [blame] | 1661 | c->SG[i].Addr.lower = temp64.val32.lower; |
| 1662 | c->SG[i].Addr.upper = temp64.val32.upper; |
| 1663 | c->SG[i].Len = buff_size[i]; |
| 1664 | c->SG[i].Ext = 0; /* we are not chaining */ |
Stephen M. Cameron | 0c9f5ba | 2010-08-26 13:56:30 -0500 | [diff] [blame] | 1665 | } |
| 1666 | c->waiting = &wait; |
| 1667 | enqueue_cmd_and_start_io(h, c); |
| 1668 | wait_for_completion(&wait); |
| 1669 | /* unlock the buffers from DMA */ |
| 1670 | for (i = 0; i < sg_used; i++) { |
| 1671 | temp64.val32.lower = c->SG[i].Addr.lower; |
| 1672 | temp64.val32.upper = c->SG[i].Addr.upper; |
| 1673 | pci_unmap_single(h->pdev, |
| 1674 | (dma_addr_t) temp64.val, buff_size[i], |
| 1675 | PCI_DMA_BIDIRECTIONAL); |
| 1676 | } |
| 1677 | check_ioctl_unit_attention(h, c); |
| 1678 | /* Copy the error information out */ |
| 1679 | ioc->error_info = *(c->err_info); |
| 1680 | if (copy_to_user(argp, ioc, sizeof(*ioc))) { |
| 1681 | cmd_special_free(h, c); |
| 1682 | status = -EFAULT; |
| 1683 | goto cleanup1; |
| 1684 | } |
| 1685 | if (ioc->Request.Type.Direction == XFER_READ) { |
| 1686 | /* Copy the data out of the buffer we created */ |
| 1687 | BYTE __user *ptr = ioc->buf; |
| 1688 | for (i = 0; i < sg_used; i++) { |
| 1689 | if (copy_to_user(ptr, buff[i], buff_size[i])) { |
| 1690 | cmd_special_free(h, c); |
| 1691 | status = -EFAULT; |
| 1692 | goto cleanup1; |
| 1693 | } |
| 1694 | ptr += buff_size[i]; |
| 1695 | } |
| 1696 | } |
| 1697 | cmd_special_free(h, c); |
| 1698 | status = 0; |
| 1699 | cleanup1: |
| 1700 | if (buff) { |
| 1701 | for (i = 0; i < sg_used; i++) |
| 1702 | kfree(buff[i]); |
| 1703 | kfree(buff); |
| 1704 | } |
| 1705 | kfree(buff_size); |
| 1706 | kfree(ioc); |
| 1707 | return status; |
| 1708 | } |
| 1709 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1710 | static int cciss_ioctl(struct block_device *bdev, fmode_t mode, |
Stephen M. Cameron | c525919 | 2010-08-26 13:56:15 -0500 | [diff] [blame] | 1711 | unsigned int cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1712 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1713 | struct gendisk *disk = bdev->bd_disk; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1714 | ctlr_info_t *h = get_host(disk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1715 | void __user *argp = (void __user *)arg; |
| 1716 | |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 1717 | dev_dbg(&h->pdev->dev, "cciss_ioctl: Called with cmd=%x %lx\n", |
| 1718 | cmd, arg); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1719 | switch (cmd) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1720 | case CCISS_GETPCIINFO: |
Stephen M. Cameron | 0a25a5a | 2010-08-26 13:55:34 -0500 | [diff] [blame] | 1721 | return cciss_getpciinfo(h, argp); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1722 | case CCISS_GETINTINFO: |
Stephen M. Cameron | 576e661 | 2010-08-26 13:55:39 -0500 | [diff] [blame] | 1723 | return cciss_getintinfo(h, argp); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1724 | case CCISS_SETINTINFO: |
Stephen M. Cameron | 4c800ee | 2010-08-26 13:55:44 -0500 | [diff] [blame] | 1725 | return cciss_setintinfo(h, argp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1726 | case CCISS_GETNODENAME: |
Stephen M. Cameron | 2521610 | 2010-08-26 13:55:49 -0500 | [diff] [blame] | 1727 | return cciss_getnodename(h, argp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1728 | case CCISS_SETNODENAME: |
Stephen M. Cameron | 4f43f32 | 2010-08-26 13:55:54 -0500 | [diff] [blame] | 1729 | return cciss_setnodename(h, argp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1730 | case CCISS_GETHEARTBEAT: |
Stephen M. Cameron | 93c7493 | 2010-08-26 13:55:59 -0500 | [diff] [blame] | 1731 | return cciss_getheartbeat(h, argp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1732 | case CCISS_GETBUSTYPES: |
Stephen M. Cameron | d18dfad | 2010-08-26 13:56:05 -0500 | [diff] [blame] | 1733 | return cciss_getbustypes(h, argp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1734 | case CCISS_GETFIRMVER: |
Stephen M. Cameron | 8a4f7fb | 2010-08-26 13:56:10 -0500 | [diff] [blame] | 1735 | return cciss_getfirmver(h, argp); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1736 | case CCISS_GETDRIVVER: |
Stephen M. Cameron | c525919 | 2010-08-26 13:56:15 -0500 | [diff] [blame] | 1737 | return cciss_getdrivver(h, argp); |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1738 | case CCISS_DEREGDISK: |
| 1739 | case CCISS_REGNEWD: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1740 | case CCISS_REVALIDVOLS: |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1741 | return rebuild_lun_table(h, 0, 1); |
Stephen M. Cameron | 0894b32 | 2010-08-26 13:56:20 -0500 | [diff] [blame] | 1742 | case CCISS_GETLUNINFO: |
| 1743 | return cciss_getluninfo(h, disk, argp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1744 | case CCISS_PASSTHRU: |
Stephen M. Cameron | f32f125 | 2010-08-26 13:56:25 -0500 | [diff] [blame] | 1745 | return cciss_passthru(h, argp); |
Stephen M. Cameron | 0c9f5ba | 2010-08-26 13:56:30 -0500 | [diff] [blame] | 1746 | case CCISS_BIG_PASSTHRU: |
| 1747 | return cciss_bigpassthru(h, argp); |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 1748 | |
Paolo Bonzini | 577ebb3 | 2012-01-12 16:01:27 +0100 | [diff] [blame] | 1749 | /* scsi_cmd_blk_ioctl handles these, below, though some are not */ |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 1750 | /* very meaningful for cciss. SG_IO is the main one people want. */ |
| 1751 | |
| 1752 | case SG_GET_VERSION_NUM: |
| 1753 | case SG_SET_TIMEOUT: |
| 1754 | case SG_GET_TIMEOUT: |
| 1755 | case SG_GET_RESERVED_SIZE: |
| 1756 | case SG_SET_RESERVED_SIZE: |
| 1757 | case SG_EMULATED_HOST: |
| 1758 | case SG_IO: |
| 1759 | case SCSI_IOCTL_SEND_COMMAND: |
Paolo Bonzini | 577ebb3 | 2012-01-12 16:01:27 +0100 | [diff] [blame] | 1760 | return scsi_cmd_blk_ioctl(bdev, mode, cmd, argp); |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 1761 | |
Paolo Bonzini | 577ebb3 | 2012-01-12 16:01:27 +0100 | [diff] [blame] | 1762 | /* scsi_cmd_blk_ioctl would normally handle these, below, but */ |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 1763 | /* they aren't a good fit for cciss, as CD-ROMs are */ |
| 1764 | /* not supported, and we don't have any bus/target/lun */ |
| 1765 | /* which we present to the kernel. */ |
| 1766 | |
| 1767 | case CDROM_SEND_PACKET: |
| 1768 | case CDROMCLOSETRAY: |
| 1769 | case CDROMEJECT: |
| 1770 | case SCSI_IOCTL_GET_IDLUN: |
| 1771 | case SCSI_IOCTL_GET_BUS_NUMBER: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1772 | default: |
| 1773 | return -ENOTTY; |
| 1774 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1775 | } |
| 1776 | |
Jens Axboe | 7b30f09 | 2006-07-25 15:02:48 +0200 | [diff] [blame] | 1777 | static void cciss_check_queues(ctlr_info_t *h) |
| 1778 | { |
| 1779 | int start_queue = h->next_to_run; |
| 1780 | int i; |
| 1781 | |
| 1782 | /* check to see if we have maxed out the number of commands that can |
| 1783 | * be placed on the queue. If so then exit. We do this check here |
| 1784 | * in case the interrupt we serviced was from an ioctl and did not |
| 1785 | * free any new commands. |
| 1786 | */ |
Mike Miller | f880632 | 2006-12-06 20:35:01 -0800 | [diff] [blame] | 1787 | if ((find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds)) == h->nr_cmds) |
Jens Axboe | 7b30f09 | 2006-07-25 15:02:48 +0200 | [diff] [blame] | 1788 | return; |
| 1789 | |
| 1790 | /* We have room on the queue for more commands. Now we need to queue |
| 1791 | * them up. We will also keep track of the next queue to run so |
| 1792 | * that every queue gets a chance to be started first. |
| 1793 | */ |
| 1794 | for (i = 0; i < h->highest_lun + 1; i++) { |
| 1795 | int curr_queue = (start_queue + i) % (h->highest_lun + 1); |
| 1796 | /* make sure the disk has been added and the drive is real |
| 1797 | * because this can be called from the middle of init_one. |
| 1798 | */ |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1799 | if (!h->drv[curr_queue]) |
| 1800 | continue; |
| 1801 | if (!(h->drv[curr_queue]->queue) || |
| 1802 | !(h->drv[curr_queue]->heads)) |
Jens Axboe | 7b30f09 | 2006-07-25 15:02:48 +0200 | [diff] [blame] | 1803 | continue; |
| 1804 | blk_start_queue(h->gendisk[curr_queue]->queue); |
| 1805 | |
| 1806 | /* check to see if we have maxed out the number of commands |
| 1807 | * that can be placed on the queue. |
| 1808 | */ |
Mike Miller | f880632 | 2006-12-06 20:35:01 -0800 | [diff] [blame] | 1809 | if ((find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds)) == h->nr_cmds) { |
Jens Axboe | 7b30f09 | 2006-07-25 15:02:48 +0200 | [diff] [blame] | 1810 | if (curr_queue == start_queue) { |
| 1811 | h->next_to_run = |
| 1812 | (start_queue + 1) % (h->highest_lun + 1); |
| 1813 | break; |
| 1814 | } else { |
| 1815 | h->next_to_run = curr_queue; |
| 1816 | break; |
| 1817 | } |
Jens Axboe | 7b30f09 | 2006-07-25 15:02:48 +0200 | [diff] [blame] | 1818 | } |
| 1819 | } |
| 1820 | } |
| 1821 | |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1822 | static void cciss_softirq_done(struct request *rq) |
| 1823 | { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1824 | CommandList_struct *c = rq->completion_data; |
| 1825 | ctlr_info_t *h = hba[c->ctlr]; |
| 1826 | SGDescriptor_struct *curr_sg = c->SG; |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1827 | u64bit temp64; |
Mike Miller | 664a717 | 2010-06-02 12:57:58 -0700 | [diff] [blame] | 1828 | unsigned long flags; |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1829 | int i, ddir; |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 1830 | int sg_index = 0; |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1831 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1832 | if (c->Request.Type.Direction == XFER_READ) |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1833 | ddir = PCI_DMA_FROMDEVICE; |
| 1834 | else |
| 1835 | ddir = PCI_DMA_TODEVICE; |
| 1836 | |
| 1837 | /* command did not need to be retried */ |
| 1838 | /* unmap the DMA mapping for all the scatter gather elements */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1839 | for (i = 0; i < c->Header.SGList; i++) { |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 1840 | if (curr_sg[sg_index].Ext == CCISS_SG_CHAIN) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1841 | cciss_unmap_sg_chain_block(h, c); |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 1842 | /* Point to the next block */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1843 | curr_sg = h->cmd_sg_list[c->cmdindex]; |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 1844 | sg_index = 0; |
| 1845 | } |
| 1846 | temp64.val32.lower = curr_sg[sg_index].Addr.lower; |
| 1847 | temp64.val32.upper = curr_sg[sg_index].Addr.upper; |
| 1848 | pci_unmap_page(h->pdev, temp64.val, curr_sg[sg_index].Len, |
| 1849 | ddir); |
| 1850 | ++sg_index; |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1851 | } |
| 1852 | |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 1853 | dev_dbg(&h->pdev->dev, "Done with %p\n", rq); |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1854 | |
Tejun Heo | c3a4d78 | 2009-05-07 22:24:37 +0900 | [diff] [blame] | 1855 | /* set the residual count for pc requests */ |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 1856 | if (rq->cmd_type == REQ_TYPE_BLOCK_PC) |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1857 | rq->resid_len = c->err_info->ResidualCnt; |
Jens Axboe | ac44e5b | 2009-03-27 10:43:52 +0100 | [diff] [blame] | 1858 | |
Tejun Heo | c3a4d78 | 2009-05-07 22:24:37 +0900 | [diff] [blame] | 1859 | blk_end_request_all(rq, (rq->errors == 0) ? 0 : -EIO); |
Kiyoshi Ueda | 3daeea2 | 2007-12-11 17:50:03 -0500 | [diff] [blame] | 1860 | |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1861 | spin_lock_irqsave(&h->lock, flags); |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 1862 | cmd_free(h, c); |
Jens Axboe | 7b30f09 | 2006-07-25 15:02:48 +0200 | [diff] [blame] | 1863 | cciss_check_queues(h); |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1864 | spin_unlock_irqrestore(&h->lock, flags); |
| 1865 | } |
| 1866 | |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 1867 | static inline void log_unit_to_scsi3addr(ctlr_info_t *h, |
| 1868 | unsigned char scsi3addr[], uint32_t log_unit) |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 1869 | { |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1870 | memcpy(scsi3addr, h->drv[log_unit]->LunID, |
| 1871 | sizeof(h->drv[log_unit]->LunID)); |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 1872 | } |
| 1873 | |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 1874 | /* This function gets the SCSI vendor, model, and revision of a logical drive |
| 1875 | * via the inquiry page 0. Model, vendor, and rev are set to empty strings if |
| 1876 | * they cannot be read. |
| 1877 | */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1878 | static void cciss_get_device_descr(ctlr_info_t *h, int logvol, |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 1879 | char *vendor, char *model, char *rev) |
| 1880 | { |
| 1881 | int rc; |
| 1882 | InquiryData_struct *inq_buf; |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 1883 | unsigned char scsi3addr[8]; |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 1884 | |
| 1885 | *vendor = '\0'; |
| 1886 | *model = '\0'; |
| 1887 | *rev = '\0'; |
| 1888 | |
| 1889 | inq_buf = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
| 1890 | if (!inq_buf) |
| 1891 | return; |
| 1892 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1893 | log_unit_to_scsi3addr(h, scsi3addr, logvol); |
| 1894 | rc = sendcmd_withirq(h, CISS_INQUIRY, inq_buf, sizeof(*inq_buf), 0, |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 1895 | scsi3addr, TYPE_CMD); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 1896 | if (rc == IO_OK) { |
| 1897 | memcpy(vendor, &inq_buf->data_byte[8], VENDOR_LEN); |
| 1898 | vendor[VENDOR_LEN] = '\0'; |
| 1899 | memcpy(model, &inq_buf->data_byte[16], MODEL_LEN); |
| 1900 | model[MODEL_LEN] = '\0'; |
| 1901 | memcpy(rev, &inq_buf->data_byte[32], REV_LEN); |
| 1902 | rev[REV_LEN] = '\0'; |
| 1903 | } |
| 1904 | |
| 1905 | kfree(inq_buf); |
| 1906 | return; |
| 1907 | } |
| 1908 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1909 | /* This function gets the serial number of a logical drive via |
| 1910 | * inquiry page 0x83. Serial no. is 16 bytes. If the serial |
| 1911 | * number cannot be had, for whatever reason, 16 bytes of 0xff |
| 1912 | * are returned instead. |
| 1913 | */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1914 | static void cciss_get_serial_no(ctlr_info_t *h, int logvol, |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1915 | unsigned char *serial_no, int buflen) |
| 1916 | { |
| 1917 | #define PAGE_83_INQ_BYTES 64 |
| 1918 | int rc; |
| 1919 | unsigned char *buf; |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 1920 | unsigned char scsi3addr[8]; |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1921 | |
| 1922 | if (buflen > 16) |
| 1923 | buflen = 16; |
| 1924 | memset(serial_no, 0xff, buflen); |
| 1925 | buf = kzalloc(PAGE_83_INQ_BYTES, GFP_KERNEL); |
| 1926 | if (!buf) |
| 1927 | return; |
| 1928 | memset(serial_no, 0, buflen); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1929 | log_unit_to_scsi3addr(h, scsi3addr, logvol); |
| 1930 | rc = sendcmd_withirq(h, CISS_INQUIRY, buf, |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 1931 | PAGE_83_INQ_BYTES, 0x83, scsi3addr, TYPE_CMD); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1932 | if (rc == IO_OK) |
| 1933 | memcpy(serial_no, &buf[8], buflen); |
| 1934 | kfree(buf); |
| 1935 | return; |
| 1936 | } |
| 1937 | |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 1938 | /* |
| 1939 | * cciss_add_disk sets up the block device queue for a logical drive |
| 1940 | */ |
| 1941 | static int cciss_add_disk(ctlr_info_t *h, struct gendisk *disk, |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1942 | int drv_index) |
| 1943 | { |
| 1944 | disk->queue = blk_init_queue(do_cciss_request, &h->lock); |
Stephen M. Cameron | e8074f7 | 2009-09-17 13:47:24 -0500 | [diff] [blame] | 1945 | if (!disk->queue) |
| 1946 | goto init_queue_failure; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1947 | sprintf(disk->disk_name, "cciss/c%dd%d", h->ctlr, drv_index); |
| 1948 | disk->major = h->major; |
| 1949 | disk->first_minor = drv_index << NWD_SHIFT; |
| 1950 | disk->fops = &cciss_fops; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1951 | if (cciss_create_ld_sysfs_entry(h, drv_index)) |
| 1952 | goto cleanup_queue; |
| 1953 | disk->private_data = h->drv[drv_index]; |
| 1954 | disk->driverfs_dev = &h->drv[drv_index]->dev; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1955 | |
| 1956 | /* Set up queue information */ |
| 1957 | blk_queue_bounce_limit(disk->queue, h->pdev->dma_mask); |
| 1958 | |
| 1959 | /* This is a hardware imposed limit. */ |
Martin K. Petersen | 8a78362 | 2010-02-26 00:20:39 -0500 | [diff] [blame] | 1960 | blk_queue_max_segments(disk->queue, h->maxsgentries); |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1961 | |
Martin K. Petersen | 086fa5f | 2010-02-26 00:20:38 -0500 | [diff] [blame] | 1962 | blk_queue_max_hw_sectors(disk->queue, h->cciss_max_sectors); |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1963 | |
| 1964 | blk_queue_softirq_done(disk->queue, cciss_softirq_done); |
| 1965 | |
| 1966 | disk->queue->queuedata = h; |
| 1967 | |
Martin K. Petersen | e1defc4 | 2009-05-22 17:17:49 -0400 | [diff] [blame] | 1968 | blk_queue_logical_block_size(disk->queue, |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1969 | h->drv[drv_index]->block_size); |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1970 | |
| 1971 | /* Make sure all queue data is written out before */ |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1972 | /* setting h->drv[drv_index]->queue, as setting this */ |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1973 | /* allows the interrupt handler to start the queue */ |
| 1974 | wmb(); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1975 | h->drv[drv_index]->queue = disk->queue; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1976 | add_disk(disk); |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 1977 | return 0; |
| 1978 | |
| 1979 | cleanup_queue: |
| 1980 | blk_cleanup_queue(disk->queue); |
| 1981 | disk->queue = NULL; |
Stephen M. Cameron | e8074f7 | 2009-09-17 13:47:24 -0500 | [diff] [blame] | 1982 | init_queue_failure: |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 1983 | return -1; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1984 | } |
| 1985 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1986 | /* This function will check the usage_count of the drive to be updated/added. |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1987 | * If the usage_count is zero and it is a heretofore unknown drive, or, |
| 1988 | * the drive's capacity, geometry, or serial number has changed, |
| 1989 | * then the drive information will be updated and the disk will be |
| 1990 | * re-registered with the kernel. If these conditions don't hold, |
| 1991 | * then it will be left alone for the next reboot. The exception to this |
| 1992 | * is disk 0 which will always be left registered with the kernel since it |
| 1993 | * is also the controller node. Any changes to disk 0 will show up on |
| 1994 | * the next reboot. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1995 | */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1996 | static void cciss_update_drive_info(ctlr_info_t *h, int drv_index, |
| 1997 | int first_time, int via_ioctl) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1998 | { |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1999 | struct gendisk *disk; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2000 | InquiryData_struct *inq_buff = NULL; |
| 2001 | unsigned int block_size; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2002 | sector_t total_size; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2003 | unsigned long flags = 0; |
| 2004 | int ret = 0; |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2005 | drive_info_struct *drvinfo; |
| 2006 | |
| 2007 | /* Get information about the disk and modify the driver structure */ |
| 2008 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2009 | drvinfo = kzalloc(sizeof(*drvinfo), GFP_KERNEL); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2010 | if (inq_buff == NULL || drvinfo == NULL) |
| 2011 | goto mem_msg; |
| 2012 | |
| 2013 | /* testing to see if 16-byte CDBs are already being used */ |
| 2014 | if (h->cciss_read == CCISS_READ_16) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2015 | cciss_read_capacity_16(h, drv_index, |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2016 | &total_size, &block_size); |
| 2017 | |
| 2018 | } else { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2019 | cciss_read_capacity(h, drv_index, &total_size, &block_size); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2020 | /* if read_capacity returns all F's this volume is >2TB */ |
| 2021 | /* in size so we switch to 16-byte CDB's for all */ |
| 2022 | /* read/write ops */ |
| 2023 | if (total_size == 0xFFFFFFFFULL) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2024 | cciss_read_capacity_16(h, drv_index, |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2025 | &total_size, &block_size); |
| 2026 | h->cciss_read = CCISS_READ_16; |
| 2027 | h->cciss_write = CCISS_WRITE_16; |
| 2028 | } else { |
| 2029 | h->cciss_read = CCISS_READ_10; |
| 2030 | h->cciss_write = CCISS_WRITE_10; |
| 2031 | } |
| 2032 | } |
| 2033 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2034 | cciss_geometry_inquiry(h, drv_index, total_size, block_size, |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2035 | inq_buff, drvinfo); |
| 2036 | drvinfo->block_size = block_size; |
| 2037 | drvinfo->nr_blocks = total_size + 1; |
| 2038 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2039 | cciss_get_device_descr(h, drv_index, drvinfo->vendor, |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 2040 | drvinfo->model, drvinfo->rev); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2041 | cciss_get_serial_no(h, drv_index, drvinfo->serial_no, |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2042 | sizeof(drvinfo->serial_no)); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2043 | /* Save the lunid in case we deregister the disk, below. */ |
| 2044 | memcpy(drvinfo->LunID, h->drv[drv_index]->LunID, |
| 2045 | sizeof(drvinfo->LunID)); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2046 | |
| 2047 | /* Is it the same disk we already know, and nothing's changed? */ |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2048 | if (h->drv[drv_index]->raid_level != -1 && |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2049 | ((memcmp(drvinfo->serial_no, |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2050 | h->drv[drv_index]->serial_no, 16) == 0) && |
| 2051 | drvinfo->block_size == h->drv[drv_index]->block_size && |
| 2052 | drvinfo->nr_blocks == h->drv[drv_index]->nr_blocks && |
| 2053 | drvinfo->heads == h->drv[drv_index]->heads && |
| 2054 | drvinfo->sectors == h->drv[drv_index]->sectors && |
| 2055 | drvinfo->cylinders == h->drv[drv_index]->cylinders)) |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2056 | /* The disk is unchanged, nothing to update */ |
| 2057 | goto freeret; |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2058 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2059 | /* If we get here it's not the same disk, or something's changed, |
| 2060 | * so we need to * deregister it, and re-register it, if it's not |
| 2061 | * in use. |
| 2062 | * If the disk already exists then deregister it before proceeding |
| 2063 | * (unless it's the first disk (for the controller node). |
| 2064 | */ |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2065 | if (h->drv[drv_index]->raid_level != -1 && drv_index != 0) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2066 | dev_warn(&h->pdev->dev, "disk %d has changed.\n", drv_index); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2067 | spin_lock_irqsave(&h->lock, flags); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2068 | h->drv[drv_index]->busy_configuring = 1; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2069 | spin_unlock_irqrestore(&h->lock, flags); |
scameron@beardog.cca.cpqcorp.net | e14ac67 | 2008-04-17 13:19:03 +0200 | [diff] [blame] | 2070 | |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2071 | /* deregister_disk sets h->drv[drv_index]->queue = NULL |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2072 | * which keeps the interrupt handler from starting |
| 2073 | * the queue. |
| 2074 | */ |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 2075 | ret = deregister_disk(h, drv_index, 0, via_ioctl); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2076 | } |
| 2077 | |
| 2078 | /* If the disk is in use return */ |
| 2079 | if (ret) |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2080 | goto freeret; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2081 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2082 | /* Save the new information from cciss_geometry_inquiry |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2083 | * and serial number inquiry. If the disk was deregistered |
| 2084 | * above, then h->drv[drv_index] will be NULL. |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2085 | */ |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2086 | if (h->drv[drv_index] == NULL) { |
| 2087 | drvinfo->device_initialized = 0; |
| 2088 | h->drv[drv_index] = drvinfo; |
| 2089 | drvinfo = NULL; /* so it won't be freed below. */ |
| 2090 | } else { |
| 2091 | /* special case for cxd0 */ |
| 2092 | h->drv[drv_index]->block_size = drvinfo->block_size; |
| 2093 | h->drv[drv_index]->nr_blocks = drvinfo->nr_blocks; |
| 2094 | h->drv[drv_index]->heads = drvinfo->heads; |
| 2095 | h->drv[drv_index]->sectors = drvinfo->sectors; |
| 2096 | h->drv[drv_index]->cylinders = drvinfo->cylinders; |
| 2097 | h->drv[drv_index]->raid_level = drvinfo->raid_level; |
| 2098 | memcpy(h->drv[drv_index]->serial_no, drvinfo->serial_no, 16); |
| 2099 | memcpy(h->drv[drv_index]->vendor, drvinfo->vendor, |
| 2100 | VENDOR_LEN + 1); |
| 2101 | memcpy(h->drv[drv_index]->model, drvinfo->model, MODEL_LEN + 1); |
| 2102 | memcpy(h->drv[drv_index]->rev, drvinfo->rev, REV_LEN + 1); |
| 2103 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2104 | |
| 2105 | ++h->num_luns; |
| 2106 | disk = h->gendisk[drv_index]; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2107 | set_capacity(disk, h->drv[drv_index]->nr_blocks); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2108 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2109 | /* If it's not disk 0 (drv_index != 0) |
| 2110 | * or if it was disk 0, but there was previously |
| 2111 | * no actual corresponding configured logical drive |
| 2112 | * (raid_leve == -1) then we want to update the |
| 2113 | * logical drive's information. |
| 2114 | */ |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 2115 | if (drv_index || first_time) { |
| 2116 | if (cciss_add_disk(h, disk, drv_index) != 0) { |
| 2117 | cciss_free_gendisk(h, drv_index); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2118 | cciss_free_drive_info(h, drv_index); |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2119 | dev_warn(&h->pdev->dev, "could not update disk %d\n", |
| 2120 | drv_index); |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 2121 | --h->num_luns; |
| 2122 | } |
| 2123 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2124 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2125 | freeret: |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2126 | kfree(inq_buff); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2127 | kfree(drvinfo); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2128 | return; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2129 | mem_msg: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2130 | dev_err(&h->pdev->dev, "out of memory\n"); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2131 | goto freeret; |
| 2132 | } |
| 2133 | |
| 2134 | /* This function will find the first index of the controllers drive array |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2135 | * that has a null drv pointer and allocate the drive info struct and |
| 2136 | * will return that index This is where new drives will be added. |
| 2137 | * If the index to be returned is greater than the highest_lun index for |
| 2138 | * the controller then highest_lun is set * to this new index. |
| 2139 | * If there are no available indexes or if tha allocation fails, then -1 |
| 2140 | * is returned. * "controller_node" is used to know if this is a real |
| 2141 | * logical drive, or just the controller node, which determines if this |
| 2142 | * counts towards highest_lun. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2143 | */ |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2144 | static int cciss_alloc_drive_info(ctlr_info_t *h, int controller_node) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2145 | { |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2146 | int i; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2147 | drive_info_struct *drv; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2148 | |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2149 | /* Search for an empty slot for our drive info */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2150 | for (i = 0; i < CISS_MAX_LUN; i++) { |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2151 | |
| 2152 | /* if not cxd0 case, and it's occupied, skip it. */ |
| 2153 | if (h->drv[i] && i != 0) |
| 2154 | continue; |
| 2155 | /* |
| 2156 | * If it's cxd0 case, and drv is alloc'ed already, and a |
| 2157 | * disk is configured there, skip it. |
| 2158 | */ |
| 2159 | if (i == 0 && h->drv[i] && h->drv[i]->raid_level != -1) |
| 2160 | continue; |
| 2161 | |
| 2162 | /* |
| 2163 | * We've found an empty slot. Update highest_lun |
| 2164 | * provided this isn't just the fake cxd0 controller node. |
| 2165 | */ |
| 2166 | if (i > h->highest_lun && !controller_node) |
| 2167 | h->highest_lun = i; |
| 2168 | |
| 2169 | /* If adding a real disk at cxd0, and it's already alloc'ed */ |
| 2170 | if (i == 0 && h->drv[i] != NULL) |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2171 | return i; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2172 | |
| 2173 | /* |
| 2174 | * Found an empty slot, not already alloc'ed. Allocate it. |
| 2175 | * Mark it with raid_level == -1, so we know it's new later on. |
| 2176 | */ |
| 2177 | drv = kzalloc(sizeof(*drv), GFP_KERNEL); |
| 2178 | if (!drv) |
| 2179 | return -1; |
| 2180 | drv->raid_level = -1; /* so we know it's new */ |
| 2181 | h->drv[i] = drv; |
| 2182 | return i; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2183 | } |
| 2184 | return -1; |
| 2185 | } |
| 2186 | |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2187 | static void cciss_free_drive_info(ctlr_info_t *h, int drv_index) |
| 2188 | { |
| 2189 | kfree(h->drv[drv_index]); |
| 2190 | h->drv[drv_index] = NULL; |
| 2191 | } |
| 2192 | |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 2193 | static void cciss_free_gendisk(ctlr_info_t *h, int drv_index) |
| 2194 | { |
| 2195 | put_disk(h->gendisk[drv_index]); |
| 2196 | h->gendisk[drv_index] = NULL; |
| 2197 | } |
| 2198 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2199 | /* cciss_add_gendisk finds a free hba[]->drv structure |
| 2200 | * and allocates a gendisk if needed, and sets the lunid |
| 2201 | * in the drvinfo structure. It returns the index into |
| 2202 | * the ->drv[] array, or -1 if none are free. |
| 2203 | * is_controller_node indicates whether highest_lun should |
| 2204 | * count this disk, or if it's only being added to provide |
| 2205 | * a means to talk to the controller in case no logical |
| 2206 | * drives have yet been configured. |
| 2207 | */ |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 2208 | static int cciss_add_gendisk(ctlr_info_t *h, unsigned char lunid[], |
| 2209 | int controller_node) |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2210 | { |
| 2211 | int drv_index; |
| 2212 | |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2213 | drv_index = cciss_alloc_drive_info(h, controller_node); |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2214 | if (drv_index == -1) |
| 2215 | return -1; |
Stephen M. Cameron | 8ce5196 | 2009-09-17 13:47:34 -0500 | [diff] [blame] | 2216 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2217 | /*Check if the gendisk needs to be allocated */ |
| 2218 | if (!h->gendisk[drv_index]) { |
| 2219 | h->gendisk[drv_index] = |
| 2220 | alloc_disk(1 << NWD_SHIFT); |
| 2221 | if (!h->gendisk[drv_index]) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2222 | dev_err(&h->pdev->dev, |
| 2223 | "could not allocate a new disk %d\n", |
| 2224 | drv_index); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2225 | goto err_free_drive_info; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2226 | } |
| 2227 | } |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2228 | memcpy(h->drv[drv_index]->LunID, lunid, |
| 2229 | sizeof(h->drv[drv_index]->LunID)); |
| 2230 | if (cciss_create_ld_sysfs_entry(h, drv_index)) |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 2231 | goto err_free_disk; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2232 | /* Don't need to mark this busy because nobody */ |
| 2233 | /* else knows about this disk yet to contend */ |
| 2234 | /* for access to it. */ |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2235 | h->drv[drv_index]->busy_configuring = 0; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2236 | wmb(); |
| 2237 | return drv_index; |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 2238 | |
| 2239 | err_free_disk: |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 2240 | cciss_free_gendisk(h, drv_index); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2241 | err_free_drive_info: |
| 2242 | cciss_free_drive_info(h, drv_index); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 2243 | return -1; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2244 | } |
| 2245 | |
| 2246 | /* This is for the special case of a controller which |
| 2247 | * has no logical drives. In this case, we still need |
| 2248 | * to register a disk so the controller can be accessed |
| 2249 | * by the Array Config Utility. |
| 2250 | */ |
| 2251 | static void cciss_add_controller_node(ctlr_info_t *h) |
| 2252 | { |
| 2253 | struct gendisk *disk; |
| 2254 | int drv_index; |
| 2255 | |
| 2256 | if (h->gendisk[0] != NULL) /* already did this? Then bail. */ |
| 2257 | return; |
| 2258 | |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 2259 | drv_index = cciss_add_gendisk(h, CTLR_LUNID, 1); |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 2260 | if (drv_index == -1) |
| 2261 | goto error; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2262 | h->drv[drv_index]->block_size = 512; |
| 2263 | h->drv[drv_index]->nr_blocks = 0; |
| 2264 | h->drv[drv_index]->heads = 0; |
| 2265 | h->drv[drv_index]->sectors = 0; |
| 2266 | h->drv[drv_index]->cylinders = 0; |
| 2267 | h->drv[drv_index]->raid_level = -1; |
| 2268 | memset(h->drv[drv_index]->serial_no, 0, 16); |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2269 | disk = h->gendisk[drv_index]; |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 2270 | if (cciss_add_disk(h, disk, drv_index) == 0) |
| 2271 | return; |
| 2272 | cciss_free_gendisk(h, drv_index); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2273 | cciss_free_drive_info(h, drv_index); |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 2274 | error: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2275 | dev_warn(&h->pdev->dev, "could not add disk 0.\n"); |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 2276 | return; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2277 | } |
| 2278 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2279 | /* This function will add and remove logical drives from the Logical |
Bjorn Helgaas | d14c4ab | 2006-06-25 05:49:04 -0700 | [diff] [blame] | 2280 | * drive array of the controller and maintain persistency of ordering |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2281 | * so that mount points are preserved until the next reboot. This allows |
| 2282 | * for the removal of logical drives in the middle of the drive array |
| 2283 | * without a re-ordering of those drives. |
| 2284 | * INPUT |
| 2285 | * h = The controller to perform the operations on |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2286 | */ |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 2287 | static int rebuild_lun_table(ctlr_info_t *h, int first_time, |
| 2288 | int via_ioctl) |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2289 | { |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2290 | int num_luns; |
| 2291 | ReportLunData_struct *ld_buff = NULL; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2292 | int return_code; |
| 2293 | int listlength = 0; |
| 2294 | int i; |
| 2295 | int drv_found; |
| 2296 | int drv_index = 0; |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 2297 | unsigned char lunid[8] = CTLR_LUNID; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2298 | unsigned long flags; |
| 2299 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2300 | if (!capable(CAP_SYS_RAWIO)) |
| 2301 | return -EPERM; |
| 2302 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2303 | /* Set busy_configuring flag for this operation */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2304 | spin_lock_irqsave(&h->lock, flags); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2305 | if (h->busy_configuring) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2306 | spin_unlock_irqrestore(&h->lock, flags); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2307 | return -EBUSY; |
| 2308 | } |
| 2309 | h->busy_configuring = 1; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2310 | spin_unlock_irqrestore(&h->lock, flags); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2311 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2312 | ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL); |
| 2313 | if (ld_buff == NULL) |
| 2314 | goto mem_msg; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2315 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2316 | return_code = sendcmd_withirq(h, CISS_REPORT_LOG, ld_buff, |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2317 | sizeof(ReportLunData_struct), |
| 2318 | 0, CTLR_LUNID, TYPE_CMD); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2319 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2320 | if (return_code == IO_OK) |
| 2321 | listlength = be32_to_cpu(*(__be32 *) ld_buff->LUNListLength); |
| 2322 | else { /* reading number of logical volumes failed */ |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2323 | dev_warn(&h->pdev->dev, |
| 2324 | "report logical volume command failed\n"); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2325 | listlength = 0; |
| 2326 | goto freeret; |
| 2327 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2328 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2329 | num_luns = listlength / 8; /* 8 bytes per entry */ |
| 2330 | if (num_luns > CISS_MAX_LUN) { |
| 2331 | num_luns = CISS_MAX_LUN; |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2332 | dev_warn(&h->pdev->dev, "more luns configured" |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2333 | " on controller than can be handled by" |
| 2334 | " this driver.\n"); |
| 2335 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2336 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2337 | if (num_luns == 0) |
| 2338 | cciss_add_controller_node(h); |
| 2339 | |
| 2340 | /* Compare controller drive array to driver's drive array |
| 2341 | * to see if any drives are missing on the controller due |
| 2342 | * to action of Array Config Utility (user deletes drive) |
| 2343 | * and deregister logical drives which have disappeared. |
| 2344 | */ |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2345 | for (i = 0; i <= h->highest_lun; i++) { |
| 2346 | int j; |
| 2347 | drv_found = 0; |
Stephen M. Cameron | d8a0be6 | 2008-12-18 14:55:11 +0100 | [diff] [blame] | 2348 | |
| 2349 | /* skip holes in the array from already deleted drives */ |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2350 | if (h->drv[i] == NULL) |
Stephen M. Cameron | d8a0be6 | 2008-12-18 14:55:11 +0100 | [diff] [blame] | 2351 | continue; |
| 2352 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2353 | for (j = 0; j < num_luns; j++) { |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 2354 | memcpy(lunid, &ld_buff->LUN[j][0], sizeof(lunid)); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2355 | if (memcmp(h->drv[i]->LunID, lunid, |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 2356 | sizeof(lunid)) == 0) { |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2357 | drv_found = 1; |
| 2358 | break; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2359 | } |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2360 | } |
| 2361 | if (!drv_found) { |
| 2362 | /* Deregister it from the OS, it's gone. */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2363 | spin_lock_irqsave(&h->lock, flags); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2364 | h->drv[i]->busy_configuring = 1; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2365 | spin_unlock_irqrestore(&h->lock, flags); |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 2366 | return_code = deregister_disk(h, i, 1, via_ioctl); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2367 | if (h->drv[i] != NULL) |
| 2368 | h->drv[i]->busy_configuring = 0; |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2369 | } |
| 2370 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2371 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2372 | /* Compare controller drive array to driver's drive array. |
| 2373 | * Check for updates in the drive information and any new drives |
| 2374 | * on the controller due to ACU adding logical drives, or changing |
| 2375 | * a logical drive's size, etc. Reregister any new/changed drives |
| 2376 | */ |
| 2377 | for (i = 0; i < num_luns; i++) { |
| 2378 | int j; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2379 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2380 | drv_found = 0; |
| 2381 | |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 2382 | memcpy(lunid, &ld_buff->LUN[i][0], sizeof(lunid)); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2383 | /* Find if the LUN is already in the drive array |
| 2384 | * of the driver. If so then update its info |
| 2385 | * if not in use. If it does not exist then find |
| 2386 | * the first free index and add it. |
| 2387 | */ |
| 2388 | for (j = 0; j <= h->highest_lun; j++) { |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2389 | if (h->drv[j] != NULL && |
| 2390 | memcmp(h->drv[j]->LunID, lunid, |
| 2391 | sizeof(h->drv[j]->LunID)) == 0) { |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2392 | drv_index = j; |
| 2393 | drv_found = 1; |
| 2394 | break; |
| 2395 | } |
| 2396 | } |
| 2397 | |
| 2398 | /* check if the drive was found already in the array */ |
| 2399 | if (!drv_found) { |
Mike Miller | eece695 | 2008-08-04 11:54:53 +0200 | [diff] [blame] | 2400 | drv_index = cciss_add_gendisk(h, lunid, 0); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2401 | if (drv_index == -1) |
| 2402 | goto freeret; |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2403 | } |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2404 | cciss_update_drive_info(h, drv_index, first_time, via_ioctl); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2405 | } /* end for */ |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2406 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2407 | freeret: |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2408 | kfree(ld_buff); |
| 2409 | h->busy_configuring = 0; |
| 2410 | /* We return -1 here to tell the ACU that we have registered/updated |
| 2411 | * all of the drives that we can and to keep it from calling us |
| 2412 | * additional times. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2413 | */ |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2414 | return -1; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2415 | mem_msg: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2416 | dev_err(&h->pdev->dev, "out of memory\n"); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2417 | h->busy_configuring = 0; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2418 | goto freeret; |
| 2419 | } |
| 2420 | |
Stephen M. Cameron | 9ddb27b | 2009-09-17 13:47:39 -0500 | [diff] [blame] | 2421 | static void cciss_clear_drive_info(drive_info_struct *drive_info) |
| 2422 | { |
| 2423 | /* zero out the disk size info */ |
| 2424 | drive_info->nr_blocks = 0; |
| 2425 | drive_info->block_size = 0; |
| 2426 | drive_info->heads = 0; |
| 2427 | drive_info->sectors = 0; |
| 2428 | drive_info->cylinders = 0; |
| 2429 | drive_info->raid_level = -1; |
| 2430 | memset(drive_info->serial_no, 0, sizeof(drive_info->serial_no)); |
| 2431 | memset(drive_info->model, 0, sizeof(drive_info->model)); |
| 2432 | memset(drive_info->rev, 0, sizeof(drive_info->rev)); |
| 2433 | memset(drive_info->vendor, 0, sizeof(drive_info->vendor)); |
| 2434 | /* |
| 2435 | * don't clear the LUNID though, we need to remember which |
| 2436 | * one this one is. |
| 2437 | */ |
| 2438 | } |
| 2439 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2440 | /* This function will deregister the disk and it's queue from the |
| 2441 | * kernel. It must be called with the controller lock held and the |
| 2442 | * drv structures busy_configuring flag set. It's parameters are: |
| 2443 | * |
| 2444 | * disk = This is the disk to be deregistered |
| 2445 | * drv = This is the drive_info_struct associated with the disk to be |
| 2446 | * deregistered. It contains information about the disk used |
| 2447 | * by the driver. |
| 2448 | * clear_all = This flag determines whether or not the disk information |
| 2449 | * is going to be completely cleared out and the highest_lun |
| 2450 | * reset. Sometimes we want to clear out information about |
Bjorn Helgaas | d14c4ab | 2006-06-25 05:49:04 -0700 | [diff] [blame] | 2451 | * the disk in preparation for re-adding it. In this case |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2452 | * the highest_lun should be left unchanged and the LunID |
| 2453 | * should not be cleared. |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 2454 | * via_ioctl |
| 2455 | * This indicates whether we've reached this path via ioctl. |
| 2456 | * This affects the maximum usage count allowed for c0d0 to be messed with. |
| 2457 | * If this path is reached via ioctl(), then the max_usage_count will |
| 2458 | * be 1, as the process calling ioctl() has got to have the device open. |
| 2459 | * If we get here via sysfs, then the max usage count will be zero. |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2460 | */ |
Stephen M. Cameron | a0ea862 | 2008-12-18 14:55:51 +0100 | [diff] [blame] | 2461 | static int deregister_disk(ctlr_info_t *h, int drv_index, |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 2462 | int clear_all, int via_ioctl) |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2463 | { |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 2464 | int i; |
Stephen M. Cameron | a0ea862 | 2008-12-18 14:55:51 +0100 | [diff] [blame] | 2465 | struct gendisk *disk; |
| 2466 | drive_info_struct *drv; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2467 | int recalculate_highest_lun; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2468 | |
| 2469 | if (!capable(CAP_SYS_RAWIO)) |
| 2470 | return -EPERM; |
| 2471 | |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2472 | drv = h->drv[drv_index]; |
Stephen M. Cameron | a0ea862 | 2008-12-18 14:55:51 +0100 | [diff] [blame] | 2473 | disk = h->gendisk[drv_index]; |
| 2474 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2475 | /* make sure logical volume is NOT is use */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2476 | if (clear_all || (h->gendisk[0] == disk)) { |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 2477 | if (drv->usage_count > via_ioctl) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2478 | return -EBUSY; |
| 2479 | } else if (drv->usage_count > 0) |
| 2480 | return -EBUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2481 | |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2482 | recalculate_highest_lun = (drv == h->drv[h->highest_lun]); |
| 2483 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2484 | /* invalidate the devices and deregister the disk. If it is disk |
| 2485 | * zero do not deregister it but just zero out it's values. This |
| 2486 | * allows us to delete disk zero but keep the controller registered. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2487 | */ |
| 2488 | if (h->gendisk[0] != disk) { |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2489 | struct request_queue *q = disk->queue; |
Stephen M. Cameron | 097d026 | 2009-09-17 13:47:19 -0500 | [diff] [blame] | 2490 | if (disk->flags & GENHD_FL_UP) { |
Stephen M. Cameron | 8ce5196 | 2009-09-17 13:47:34 -0500 | [diff] [blame] | 2491 | cciss_destroy_ld_sysfs_entry(h, drv_index, 0); |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2492 | del_gendisk(disk); |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2493 | } |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2494 | if (q) |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2495 | blk_cleanup_queue(q); |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2496 | /* If clear_all is set then we are deleting the logical |
| 2497 | * drive, not just refreshing its info. For drives |
| 2498 | * other than disk 0 we will call put_disk. We do not |
| 2499 | * do this for disk 0 as we need it to be able to |
| 2500 | * configure the controller. |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2501 | */ |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2502 | if (clear_all){ |
| 2503 | /* This isn't pretty, but we need to find the |
| 2504 | * disk in our array and NULL our the pointer. |
| 2505 | * This is so that we will call alloc_disk if |
| 2506 | * this index is used again later. |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2507 | */ |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2508 | for (i=0; i < CISS_MAX_LUN; i++){ |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2509 | if (h->gendisk[i] == disk) { |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2510 | h->gendisk[i] = NULL; |
| 2511 | break; |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 2512 | } |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 2513 | } |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2514 | put_disk(disk); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2515 | } |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 2516 | } else { |
| 2517 | set_capacity(disk, 0); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2518 | cciss_clear_drive_info(drv); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2519 | } |
| 2520 | |
| 2521 | --h->num_luns; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2522 | |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2523 | /* if it was the last disk, find the new hightest lun */ |
| 2524 | if (clear_all && recalculate_highest_lun) { |
Bill Pemberton | c2d45b4 | 2010-04-30 09:34:32 -0400 | [diff] [blame] | 2525 | int newhighest = -1; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2526 | for (i = 0; i <= h->highest_lun; i++) { |
| 2527 | /* if the disk has size > 0, it is available */ |
| 2528 | if (h->drv[i] && h->drv[i]->heads) |
| 2529 | newhighest = i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2530 | } |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2531 | h->highest_lun = newhighest; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2532 | } |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 2533 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2534 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2535 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2536 | static int fill_cmd(ctlr_info_t *h, CommandList_struct *c, __u8 cmd, void *buff, |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2537 | size_t size, __u8 page_code, unsigned char *scsi3addr, |
| 2538 | int cmd_type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2539 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2540 | u64bit buff_dma_handle; |
| 2541 | int status = IO_OK; |
| 2542 | |
| 2543 | c->cmd_type = CMD_IOCTL_PEND; |
| 2544 | c->Header.ReplyQueue = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2545 | if (buff != NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2546 | c->Header.SGList = 1; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2547 | c->Header.SGTotal = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2548 | } else { |
| 2549 | c->Header.SGList = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2550 | c->Header.SGTotal = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2551 | } |
| 2552 | c->Header.Tag.lower = c->busaddr; |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2553 | memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2554 | |
| 2555 | c->Request.Type.Type = cmd_type; |
| 2556 | if (cmd_type == TYPE_CMD) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2557 | switch (cmd) { |
| 2558 | case CISS_INQUIRY: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2559 | /* are we trying to read a vital product page */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2560 | if (page_code != 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2561 | c->Request.CDB[1] = 0x01; |
| 2562 | c->Request.CDB[2] = page_code; |
| 2563 | } |
| 2564 | c->Request.CDBLen = 6; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2565 | c->Request.Type.Attribute = ATTR_SIMPLE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2566 | c->Request.Type.Direction = XFER_READ; |
| 2567 | c->Request.Timeout = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2568 | c->Request.CDB[0] = CISS_INQUIRY; |
| 2569 | c->Request.CDB[4] = size & 0xFF; |
| 2570 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2571 | case CISS_REPORT_LOG: |
| 2572 | case CISS_REPORT_PHYS: |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2573 | /* Talking to controller so It's a physical command |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2574 | mode = 00 target = 0. Nothing to write. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2575 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2576 | c->Request.CDBLen = 12; |
| 2577 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2578 | c->Request.Type.Direction = XFER_READ; |
| 2579 | c->Request.Timeout = 0; |
| 2580 | c->Request.CDB[0] = cmd; |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 2581 | c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2582 | c->Request.CDB[7] = (size >> 16) & 0xFF; |
| 2583 | c->Request.CDB[8] = (size >> 8) & 0xFF; |
| 2584 | c->Request.CDB[9] = size & 0xFF; |
| 2585 | break; |
| 2586 | |
| 2587 | case CCISS_READ_CAPACITY: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2588 | c->Request.CDBLen = 10; |
| 2589 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2590 | c->Request.Type.Direction = XFER_READ; |
| 2591 | c->Request.Timeout = 0; |
| 2592 | c->Request.CDB[0] = cmd; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2593 | break; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2594 | case CCISS_READ_CAPACITY_16: |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2595 | c->Request.CDBLen = 16; |
| 2596 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2597 | c->Request.Type.Direction = XFER_READ; |
| 2598 | c->Request.Timeout = 0; |
| 2599 | c->Request.CDB[0] = cmd; |
| 2600 | c->Request.CDB[1] = 0x10; |
| 2601 | c->Request.CDB[10] = (size >> 24) & 0xFF; |
| 2602 | c->Request.CDB[11] = (size >> 16) & 0xFF; |
| 2603 | c->Request.CDB[12] = (size >> 8) & 0xFF; |
| 2604 | c->Request.CDB[13] = size & 0xFF; |
| 2605 | c->Request.Timeout = 0; |
| 2606 | c->Request.CDB[0] = cmd; |
| 2607 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2608 | case CCISS_CACHE_FLUSH: |
| 2609 | c->Request.CDBLen = 12; |
| 2610 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2611 | c->Request.Type.Direction = XFER_WRITE; |
| 2612 | c->Request.Timeout = 0; |
| 2613 | c->Request.CDB[0] = BMIC_WRITE; |
| 2614 | c->Request.CDB[6] = BMIC_CACHE_FLUSH; |
Stephen M. Cameron | 59bd71a | 2011-11-28 20:12:05 +0100 | [diff] [blame] | 2615 | c->Request.CDB[7] = (size >> 8) & 0xFF; |
| 2616 | c->Request.CDB[8] = size & 0xFF; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2617 | break; |
Stephen M. Cameron | 88f627a | 2009-06-02 14:48:11 +0200 | [diff] [blame] | 2618 | case TEST_UNIT_READY: |
Stephen M. Cameron | 88f627a | 2009-06-02 14:48:11 +0200 | [diff] [blame] | 2619 | c->Request.CDBLen = 6; |
| 2620 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2621 | c->Request.Type.Direction = XFER_NONE; |
| 2622 | c->Request.Timeout = 0; |
| 2623 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2624 | default: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2625 | dev_warn(&h->pdev->dev, "Unknown Command 0x%c\n", cmd); |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 2626 | return IO_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2627 | } |
| 2628 | } else if (cmd_type == TYPE_MSG) { |
| 2629 | switch (cmd) { |
Stephen M. Cameron | 8f71bb8 | 2011-05-03 14:53:26 -0500 | [diff] [blame] | 2630 | case CCISS_ABORT_MSG: |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2631 | c->Request.CDBLen = 12; |
| 2632 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2633 | c->Request.Type.Direction = XFER_WRITE; |
| 2634 | c->Request.Timeout = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2635 | c->Request.CDB[0] = cmd; /* abort */ |
| 2636 | c->Request.CDB[1] = 0; /* abort a command */ |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2637 | /* buff contains the tag of the command to abort */ |
| 2638 | memcpy(&c->Request.CDB[4], buff, 8); |
| 2639 | break; |
Stephen M. Cameron | 8f71bb8 | 2011-05-03 14:53:26 -0500 | [diff] [blame] | 2640 | case CCISS_RESET_MSG: |
Stephen M. Cameron | 88f627a | 2009-06-02 14:48:11 +0200 | [diff] [blame] | 2641 | c->Request.CDBLen = 16; |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2642 | c->Request.Type.Attribute = ATTR_SIMPLE; |
Stephen M. Cameron | 88f627a | 2009-06-02 14:48:11 +0200 | [diff] [blame] | 2643 | c->Request.Type.Direction = XFER_NONE; |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2644 | c->Request.Timeout = 0; |
| 2645 | memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB)); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2646 | c->Request.CDB[0] = cmd; /* reset */ |
Stephen M. Cameron | 8f71bb8 | 2011-05-03 14:53:26 -0500 | [diff] [blame] | 2647 | c->Request.CDB[1] = CCISS_RESET_TYPE_TARGET; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2648 | break; |
Stephen M. Cameron | 8f71bb8 | 2011-05-03 14:53:26 -0500 | [diff] [blame] | 2649 | case CCISS_NOOP_MSG: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2650 | c->Request.CDBLen = 1; |
| 2651 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2652 | c->Request.Type.Direction = XFER_WRITE; |
| 2653 | c->Request.Timeout = 0; |
| 2654 | c->Request.CDB[0] = cmd; |
| 2655 | break; |
| 2656 | default: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2657 | dev_warn(&h->pdev->dev, |
| 2658 | "unknown message type %d\n", cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2659 | return IO_ERROR; |
| 2660 | } |
| 2661 | } else { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2662 | dev_warn(&h->pdev->dev, "unknown command type %d\n", cmd_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2663 | return IO_ERROR; |
| 2664 | } |
| 2665 | /* Fill in the scatter gather information */ |
| 2666 | if (size > 0) { |
| 2667 | buff_dma_handle.val = (__u64) pci_map_single(h->pdev, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2668 | buff, size, |
| 2669 | PCI_DMA_BIDIRECTIONAL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2670 | c->SG[0].Addr.lower = buff_dma_handle.val32.lower; |
| 2671 | c->SG[0].Addr.upper = buff_dma_handle.val32.upper; |
| 2672 | c->SG[0].Len = size; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2673 | c->SG[0].Ext = 0; /* we are not chaining */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2674 | } |
| 2675 | return status; |
| 2676 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2677 | |
Greg Kroah-Hartman | 8d85fce | 2012-12-21 15:13:49 -0800 | [diff] [blame] | 2678 | static int cciss_send_reset(ctlr_info_t *h, unsigned char *scsi3addr, |
| 2679 | u8 reset_type) |
Jens Axboe | edc83d47 | 2011-05-06 08:27:00 -0600 | [diff] [blame] | 2680 | { |
| 2681 | CommandList_struct *c; |
| 2682 | int return_status; |
| 2683 | |
| 2684 | c = cmd_alloc(h); |
| 2685 | if (!c) |
| 2686 | return -ENOMEM; |
| 2687 | return_status = fill_cmd(h, c, CCISS_RESET_MSG, NULL, 0, 0, |
| 2688 | CTLR_LUNID, TYPE_MSG); |
| 2689 | c->Request.CDB[1] = reset_type; /* fill_cmd defaults to target reset */ |
| 2690 | if (return_status != IO_OK) { |
| 2691 | cmd_special_free(h, c); |
| 2692 | return return_status; |
| 2693 | } |
| 2694 | c->waiting = NULL; |
| 2695 | enqueue_cmd_and_start_io(h, c); |
| 2696 | /* Don't wait for completion, the reset won't complete. Don't free |
| 2697 | * the command either. This is the last command we will send before |
| 2698 | * re-initializing everything, so it doesn't matter and won't leak. |
| 2699 | */ |
| 2700 | return 0; |
| 2701 | } |
| 2702 | |
scameron@beardog.cca.cpqcorp.net | 3c2ab40 | 2009-06-08 16:04:35 -0500 | [diff] [blame] | 2703 | static int check_target_status(ctlr_info_t *h, CommandList_struct *c) |
| 2704 | { |
| 2705 | switch (c->err_info->ScsiStatus) { |
| 2706 | case SAM_STAT_GOOD: |
| 2707 | return IO_OK; |
| 2708 | case SAM_STAT_CHECK_CONDITION: |
| 2709 | switch (0xf & c->err_info->SenseInfo[2]) { |
| 2710 | case 0: return IO_OK; /* no sense */ |
| 2711 | case 1: return IO_OK; /* recovered error */ |
| 2712 | default: |
Stephen M. Cameron | c08fac6 | 2009-11-12 12:49:25 -0600 | [diff] [blame] | 2713 | if (check_for_unit_attention(h, c)) |
| 2714 | return IO_NEEDS_RETRY; |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2715 | dev_warn(&h->pdev->dev, "cmd 0x%02x " |
scameron@beardog.cca.cpqcorp.net | 3c2ab40 | 2009-06-08 16:04:35 -0500 | [diff] [blame] | 2716 | "check condition, sense key = 0x%02x\n", |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2717 | c->Request.CDB[0], c->err_info->SenseInfo[2]); |
scameron@beardog.cca.cpqcorp.net | 3c2ab40 | 2009-06-08 16:04:35 -0500 | [diff] [blame] | 2718 | } |
| 2719 | break; |
| 2720 | default: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2721 | dev_warn(&h->pdev->dev, "cmd 0x%02x" |
| 2722 | "scsi status = 0x%02x\n", |
scameron@beardog.cca.cpqcorp.net | 3c2ab40 | 2009-06-08 16:04:35 -0500 | [diff] [blame] | 2723 | c->Request.CDB[0], c->err_info->ScsiStatus); |
| 2724 | break; |
| 2725 | } |
| 2726 | return IO_ERROR; |
| 2727 | } |
| 2728 | |
scameron@beardog.cca.cpqcorp.net | 789a424 | 2009-06-08 16:05:56 -0500 | [diff] [blame] | 2729 | static int process_sendcmd_error(ctlr_info_t *h, CommandList_struct *c) |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2730 | { |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2731 | int return_status = IO_OK; |
| 2732 | |
scameron@beardog.cca.cpqcorp.net | 789a424 | 2009-06-08 16:05:56 -0500 | [diff] [blame] | 2733 | if (c->err_info->CommandStatus == CMD_SUCCESS) |
| 2734 | return IO_OK; |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2735 | |
| 2736 | switch (c->err_info->CommandStatus) { |
| 2737 | case CMD_TARGET_STATUS: |
scameron@beardog.cca.cpqcorp.net | 3c2ab40 | 2009-06-08 16:04:35 -0500 | [diff] [blame] | 2738 | return_status = check_target_status(h, c); |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2739 | break; |
| 2740 | case CMD_DATA_UNDERRUN: |
| 2741 | case CMD_DATA_OVERRUN: |
| 2742 | /* expected for inquiry and report lun commands */ |
| 2743 | break; |
| 2744 | case CMD_INVALID: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2745 | dev_warn(&h->pdev->dev, "cmd 0x%02x is " |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2746 | "reported invalid\n", c->Request.CDB[0]); |
| 2747 | return_status = IO_ERROR; |
| 2748 | break; |
| 2749 | case CMD_PROTOCOL_ERR: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2750 | dev_warn(&h->pdev->dev, "cmd 0x%02x has " |
| 2751 | "protocol error\n", c->Request.CDB[0]); |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2752 | return_status = IO_ERROR; |
| 2753 | break; |
| 2754 | case CMD_HARDWARE_ERR: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2755 | dev_warn(&h->pdev->dev, "cmd 0x%02x had " |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2756 | " hardware error\n", c->Request.CDB[0]); |
| 2757 | return_status = IO_ERROR; |
| 2758 | break; |
| 2759 | case CMD_CONNECTION_LOST: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2760 | dev_warn(&h->pdev->dev, "cmd 0x%02x had " |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2761 | "connection lost\n", c->Request.CDB[0]); |
| 2762 | return_status = IO_ERROR; |
| 2763 | break; |
| 2764 | case CMD_ABORTED: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2765 | dev_warn(&h->pdev->dev, "cmd 0x%02x was " |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2766 | "aborted\n", c->Request.CDB[0]); |
| 2767 | return_status = IO_ERROR; |
| 2768 | break; |
| 2769 | case CMD_ABORT_FAILED: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2770 | dev_warn(&h->pdev->dev, "cmd 0x%02x reports " |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2771 | "abort failed\n", c->Request.CDB[0]); |
| 2772 | return_status = IO_ERROR; |
| 2773 | break; |
| 2774 | case CMD_UNSOLICITED_ABORT: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2775 | dev_warn(&h->pdev->dev, "unsolicited abort 0x%02x\n", |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2776 | c->Request.CDB[0]); |
scameron@beardog.cca.cpqcorp.net | 789a424 | 2009-06-08 16:05:56 -0500 | [diff] [blame] | 2777 | return_status = IO_NEEDS_RETRY; |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2778 | break; |
Stephen M. Cameron | 6d9a4f9 | 2011-03-12 10:02:30 +0100 | [diff] [blame] | 2779 | case CMD_UNABORTABLE: |
| 2780 | dev_warn(&h->pdev->dev, "cmd unabortable\n"); |
| 2781 | return_status = IO_ERROR; |
| 2782 | break; |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2783 | default: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2784 | dev_warn(&h->pdev->dev, "cmd 0x%02x returned " |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2785 | "unknown status %x\n", c->Request.CDB[0], |
| 2786 | c->err_info->CommandStatus); |
| 2787 | return_status = IO_ERROR; |
| 2788 | } |
scameron@beardog.cca.cpqcorp.net | 789a424 | 2009-06-08 16:05:56 -0500 | [diff] [blame] | 2789 | return return_status; |
| 2790 | } |
| 2791 | |
| 2792 | static int sendcmd_withirq_core(ctlr_info_t *h, CommandList_struct *c, |
| 2793 | int attempt_retry) |
| 2794 | { |
| 2795 | DECLARE_COMPLETION_ONSTACK(wait); |
| 2796 | u64bit buff_dma_handle; |
scameron@beardog.cca.cpqcorp.net | 789a424 | 2009-06-08 16:05:56 -0500 | [diff] [blame] | 2797 | int return_status = IO_OK; |
| 2798 | |
| 2799 | resend_cmd2: |
| 2800 | c->waiting = &wait; |
Mike Miller | 664a717 | 2010-06-02 12:57:58 -0700 | [diff] [blame] | 2801 | enqueue_cmd_and_start_io(h, c); |
scameron@beardog.cca.cpqcorp.net | 789a424 | 2009-06-08 16:05:56 -0500 | [diff] [blame] | 2802 | |
| 2803 | wait_for_completion(&wait); |
| 2804 | |
| 2805 | if (c->err_info->CommandStatus == 0 || !attempt_retry) |
| 2806 | goto command_done; |
| 2807 | |
| 2808 | return_status = process_sendcmd_error(h, c); |
| 2809 | |
| 2810 | if (return_status == IO_NEEDS_RETRY && |
| 2811 | c->retry_count < MAX_CMD_RETRIES) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2812 | dev_warn(&h->pdev->dev, "retrying 0x%02x\n", |
scameron@beardog.cca.cpqcorp.net | 789a424 | 2009-06-08 16:05:56 -0500 | [diff] [blame] | 2813 | c->Request.CDB[0]); |
| 2814 | c->retry_count++; |
| 2815 | /* erase the old error information */ |
| 2816 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); |
| 2817 | return_status = IO_OK; |
Wolfram Sang | 16735d0 | 2013-11-14 14:32:02 -0800 | [diff] [blame] | 2818 | reinit_completion(&wait); |
scameron@beardog.cca.cpqcorp.net | 789a424 | 2009-06-08 16:05:56 -0500 | [diff] [blame] | 2819 | goto resend_cmd2; |
| 2820 | } |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2821 | |
| 2822 | command_done: |
| 2823 | /* unlock the buffers from DMA */ |
| 2824 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
| 2825 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; |
| 2826 | pci_unmap_single(h->pdev, (dma_addr_t) buff_dma_handle.val, |
| 2827 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); |
| 2828 | return return_status; |
| 2829 | } |
| 2830 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2831 | static int sendcmd_withirq(ctlr_info_t *h, __u8 cmd, void *buff, size_t size, |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2832 | __u8 page_code, unsigned char scsi3addr[], |
| 2833 | int cmd_type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2834 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2835 | CommandList_struct *c; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2836 | int return_status; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2837 | |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 2838 | c = cmd_special_alloc(h); |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2839 | if (!c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2840 | return -ENOMEM; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2841 | return_status = fill_cmd(h, c, cmd, buff, size, page_code, |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2842 | scsi3addr, cmd_type); |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2843 | if (return_status == IO_OK) |
scameron@beardog.cca.cpqcorp.net | 789a424 | 2009-06-08 16:05:56 -0500 | [diff] [blame] | 2844 | return_status = sendcmd_withirq_core(h, c, 1); |
| 2845 | |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 2846 | cmd_special_free(h, c); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2847 | return return_status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2848 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2849 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2850 | static void cciss_geometry_inquiry(ctlr_info_t *h, int logvol, |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 2851 | sector_t total_size, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2852 | unsigned int block_size, |
| 2853 | InquiryData_struct *inq_buff, |
| 2854 | drive_info_struct *drv) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2855 | { |
| 2856 | int return_code; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2857 | unsigned long t; |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2858 | unsigned char scsi3addr[8]; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2859 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2860 | memset(inq_buff, 0, sizeof(InquiryData_struct)); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2861 | log_unit_to_scsi3addr(h, scsi3addr, logvol); |
| 2862 | return_code = sendcmd_withirq(h, CISS_INQUIRY, inq_buff, |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 2863 | sizeof(*inq_buff), 0xC1, scsi3addr, TYPE_CMD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2864 | if (return_code == IO_OK) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2865 | if (inq_buff->data_byte[8] == 0xFF) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2866 | dev_warn(&h->pdev->dev, |
| 2867 | "reading geometry failed, volume " |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2868 | "does not support reading geometry\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2869 | drv->heads = 255; |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 2870 | drv->sectors = 32; /* Sectors per track */ |
Mike Miller (OS Dev) | 7f42d3b | 2007-04-04 19:08:23 -0700 | [diff] [blame] | 2871 | drv->cylinders = total_size + 1; |
Mike Miller | 89f97ad | 2006-12-18 10:59:39 +0100 | [diff] [blame] | 2872 | drv->raid_level = RAID_UNKNOWN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2873 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2874 | drv->heads = inq_buff->data_byte[6]; |
| 2875 | drv->sectors = inq_buff->data_byte[7]; |
| 2876 | drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8; |
| 2877 | drv->cylinders += inq_buff->data_byte[5]; |
| 2878 | drv->raid_level = inq_buff->data_byte[8]; |
Matthew Wilcox | 3f7705e | 2006-10-21 10:24:19 -0700 | [diff] [blame] | 2879 | } |
| 2880 | drv->block_size = block_size; |
Mike Miller (OS Dev) | 97c0697 | 2007-03-06 01:42:14 -0800 | [diff] [blame] | 2881 | drv->nr_blocks = total_size + 1; |
Matthew Wilcox | 3f7705e | 2006-10-21 10:24:19 -0700 | [diff] [blame] | 2882 | t = drv->heads * drv->sectors; |
| 2883 | if (t > 1) { |
Mike Miller (OS Dev) | 97c0697 | 2007-03-06 01:42:14 -0800 | [diff] [blame] | 2884 | sector_t real_size = total_size + 1; |
| 2885 | unsigned long rem = sector_div(real_size, t); |
Matthew Wilcox | 3f7705e | 2006-10-21 10:24:19 -0700 | [diff] [blame] | 2886 | if (rem) |
Mike Miller (OS Dev) | 97c0697 | 2007-03-06 01:42:14 -0800 | [diff] [blame] | 2887 | real_size++; |
| 2888 | drv->cylinders = real_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2889 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2890 | } else { /* Get geometry failed */ |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2891 | dev_warn(&h->pdev->dev, "reading geometry failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2892 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2893 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2894 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2895 | static void |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2896 | cciss_read_capacity(ctlr_info_t *h, int logvol, sector_t *total_size, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2897 | unsigned int *block_size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2898 | { |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2899 | ReadCapdata_struct *buf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2900 | int return_code; |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2901 | unsigned char scsi3addr[8]; |
Mariusz Kozlowski | 1aebe18 | 2007-08-11 22:34:29 +0200 | [diff] [blame] | 2902 | |
| 2903 | buf = kzalloc(sizeof(ReadCapdata_struct), GFP_KERNEL); |
| 2904 | if (!buf) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2905 | dev_warn(&h->pdev->dev, "out of memory\n"); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2906 | return; |
| 2907 | } |
Mariusz Kozlowski | 1aebe18 | 2007-08-11 22:34:29 +0200 | [diff] [blame] | 2908 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2909 | log_unit_to_scsi3addr(h, scsi3addr, logvol); |
| 2910 | return_code = sendcmd_withirq(h, CCISS_READ_CAPACITY, buf, |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 2911 | sizeof(ReadCapdata_struct), 0, scsi3addr, TYPE_CMD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2912 | if (return_code == IO_OK) { |
Al Viro | 4c1f2b31 | 2007-03-14 09:19:10 +0000 | [diff] [blame] | 2913 | *total_size = be32_to_cpu(*(__be32 *) buf->total_size); |
| 2914 | *block_size = be32_to_cpu(*(__be32 *) buf->block_size); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2915 | } else { /* read capacity command failed */ |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2916 | dev_warn(&h->pdev->dev, "read capacity failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2917 | *total_size = 0; |
| 2918 | *block_size = BLOCK_SIZE; |
| 2919 | } |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2920 | kfree(buf); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2921 | } |
| 2922 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2923 | static void cciss_read_capacity_16(ctlr_info_t *h, int logvol, |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 2924 | sector_t *total_size, unsigned int *block_size) |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2925 | { |
| 2926 | ReadCapdata_struct_16 *buf; |
| 2927 | int return_code; |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2928 | unsigned char scsi3addr[8]; |
Mariusz Kozlowski | 1aebe18 | 2007-08-11 22:34:29 +0200 | [diff] [blame] | 2929 | |
| 2930 | buf = kzalloc(sizeof(ReadCapdata_struct_16), GFP_KERNEL); |
| 2931 | if (!buf) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2932 | dev_warn(&h->pdev->dev, "out of memory\n"); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2933 | return; |
| 2934 | } |
Mariusz Kozlowski | 1aebe18 | 2007-08-11 22:34:29 +0200 | [diff] [blame] | 2935 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2936 | log_unit_to_scsi3addr(h, scsi3addr, logvol); |
| 2937 | return_code = sendcmd_withirq(h, CCISS_READ_CAPACITY_16, |
| 2938 | buf, sizeof(ReadCapdata_struct_16), |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 2939 | 0, scsi3addr, TYPE_CMD); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2940 | if (return_code == IO_OK) { |
Al Viro | 4c1f2b31 | 2007-03-14 09:19:10 +0000 | [diff] [blame] | 2941 | *total_size = be64_to_cpu(*(__be64 *) buf->total_size); |
| 2942 | *block_size = be32_to_cpu(*(__be32 *) buf->block_size); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2943 | } else { /* read capacity command failed */ |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2944 | dev_warn(&h->pdev->dev, "read capacity failed\n"); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2945 | *total_size = 0; |
| 2946 | *block_size = BLOCK_SIZE; |
| 2947 | } |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2948 | dev_info(&h->pdev->dev, " blocks= %llu block_size= %d\n", |
Mike Miller (OS Dev) | 97c0697 | 2007-03-06 01:42:14 -0800 | [diff] [blame] | 2949 | (unsigned long long)*total_size+1, *block_size); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2950 | kfree(buf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2951 | } |
| 2952 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2953 | static int cciss_revalidate(struct gendisk *disk) |
| 2954 | { |
| 2955 | ctlr_info_t *h = get_host(disk); |
| 2956 | drive_info_struct *drv = get_drv(disk); |
| 2957 | int logvol; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2958 | int FOUND = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2959 | unsigned int block_size; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2960 | sector_t total_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2961 | InquiryData_struct *inq_buff = NULL; |
| 2962 | |
Stephen M. Cameron | 68264e9 | 2011-01-19 08:25:02 -0700 | [diff] [blame] | 2963 | for (logvol = 0; logvol <= h->highest_lun; logvol++) { |
Stephen M. Cameron | 0fc13c8 | 2010-12-17 09:01:37 +0100 | [diff] [blame] | 2964 | if (!h->drv[logvol]) |
Linus Torvalds | 453434c | 2010-12-20 21:21:49 -0800 | [diff] [blame] | 2965 | continue; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2966 | if (memcmp(h->drv[logvol]->LunID, drv->LunID, |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 2967 | sizeof(drv->LunID)) == 0) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2968 | FOUND = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2969 | break; |
| 2970 | } |
| 2971 | } |
| 2972 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2973 | if (!FOUND) |
| 2974 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2975 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2976 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
| 2977 | if (inq_buff == NULL) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2978 | dev_warn(&h->pdev->dev, "out of memory\n"); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2979 | return 1; |
| 2980 | } |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2981 | if (h->cciss_read == CCISS_READ_10) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2982 | cciss_read_capacity(h, logvol, |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2983 | &total_size, &block_size); |
| 2984 | } else { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2985 | cciss_read_capacity_16(h, logvol, |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2986 | &total_size, &block_size); |
| 2987 | } |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2988 | cciss_geometry_inquiry(h, logvol, total_size, block_size, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2989 | inq_buff, drv); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2990 | |
Martin K. Petersen | e1defc4 | 2009-05-22 17:17:49 -0400 | [diff] [blame] | 2991 | blk_queue_logical_block_size(drv->queue, drv->block_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2992 | set_capacity(disk, drv->nr_blocks); |
| 2993 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2994 | kfree(inq_buff); |
| 2995 | return 0; |
| 2996 | } |
| 2997 | |
| 2998 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2999 | * Map (physical) PCI mem into (virtual) kernel space |
| 3000 | */ |
| 3001 | static void __iomem *remap_pci_mem(ulong base, ulong size) |
| 3002 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3003 | ulong page_base = ((ulong) base) & PAGE_MASK; |
| 3004 | ulong page_offs = ((ulong) base) - page_base; |
| 3005 | void __iomem *page_remapped = ioremap(page_base, page_offs + size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3006 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3007 | return page_remapped ? (page_remapped + page_offs) : NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3008 | } |
| 3009 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3010 | /* |
| 3011 | * Takes jobs of the Q and sends them to the hardware, then puts it on |
| 3012 | * the Q to wait for completion. |
| 3013 | */ |
| 3014 | static void start_io(ctlr_info_t *h) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3015 | { |
| 3016 | CommandList_struct *c; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3017 | |
Jens Axboe | e6e1ee9 | 2011-01-10 21:50:33 +0100 | [diff] [blame] | 3018 | while (!list_empty(&h->reqQ)) { |
| 3019 | c = list_entry(h->reqQ.next, CommandList_struct, list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3020 | /* can't do anything if fifo is full */ |
| 3021 | if ((h->access.fifo_full(h))) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3022 | dev_warn(&h->pdev->dev, "fifo full\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3023 | break; |
| 3024 | } |
| 3025 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3026 | /* Get the first entry from the Request Q */ |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 3027 | removeQ(c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3028 | h->Qdepth--; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3029 | |
| 3030 | /* Tell the controller execute command */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3031 | h->access.submit_command(h, c); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3032 | |
| 3033 | /* Put job onto the completed Q */ |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 3034 | addQ(&h->cmpQ, c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3035 | } |
| 3036 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3037 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 3038 | /* Assumes that h->lock is held. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3039 | /* Zeros out the error record and then resends the command back */ |
| 3040 | /* to the controller */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3041 | static inline void resend_cciss_cmd(ctlr_info_t *h, CommandList_struct *c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3042 | { |
| 3043 | /* erase the old error information */ |
| 3044 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); |
| 3045 | |
| 3046 | /* add it to software queue and then send it to the controller */ |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 3047 | addQ(&h->reqQ, c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3048 | h->Qdepth++; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3049 | if (h->Qdepth > h->maxQsinceinit) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3050 | h->maxQsinceinit = h->Qdepth; |
| 3051 | |
| 3052 | start_io(h); |
| 3053 | } |
Jens Axboe | a9925a0 | 2006-01-09 16:04:06 +0100 | [diff] [blame] | 3054 | |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3055 | static inline unsigned int make_status_bytes(unsigned int scsi_status_byte, |
| 3056 | unsigned int msg_byte, unsigned int host_byte, |
| 3057 | unsigned int driver_byte) |
| 3058 | { |
| 3059 | /* inverse of macros in scsi.h */ |
| 3060 | return (scsi_status_byte & 0xff) | |
| 3061 | ((msg_byte & 0xff) << 8) | |
| 3062 | ((host_byte & 0xff) << 16) | |
| 3063 | ((driver_byte & 0xff) << 24); |
| 3064 | } |
| 3065 | |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3066 | static inline int evaluate_target_status(ctlr_info_t *h, |
| 3067 | CommandList_struct *cmd, int *retry_cmd) |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3068 | { |
| 3069 | unsigned char sense_key; |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3070 | unsigned char status_byte, msg_byte, host_byte, driver_byte; |
| 3071 | int error_value; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3072 | |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3073 | *retry_cmd = 0; |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3074 | /* If we get in here, it means we got "target status", that is, scsi status */ |
| 3075 | status_byte = cmd->err_info->ScsiStatus; |
| 3076 | driver_byte = DRIVER_OK; |
| 3077 | msg_byte = cmd->err_info->CommandStatus; /* correct? seems too device specific */ |
| 3078 | |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3079 | if (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3080 | host_byte = DID_PASSTHROUGH; |
| 3081 | else |
| 3082 | host_byte = DID_OK; |
| 3083 | |
| 3084 | error_value = make_status_bytes(status_byte, msg_byte, |
| 3085 | host_byte, driver_byte); |
| 3086 | |
| 3087 | if (cmd->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) { |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3088 | if (cmd->rq->cmd_type != REQ_TYPE_BLOCK_PC) |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3089 | dev_warn(&h->pdev->dev, "cmd %p " |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3090 | "has SCSI Status 0x%x\n", |
| 3091 | cmd, cmd->err_info->ScsiStatus); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3092 | return error_value; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3093 | } |
| 3094 | |
| 3095 | /* check the sense key */ |
| 3096 | sense_key = 0xf & cmd->err_info->SenseInfo[2]; |
| 3097 | /* no status or recovered error */ |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3098 | if (((sense_key == 0x0) || (sense_key == 0x1)) && |
| 3099 | (cmd->rq->cmd_type != REQ_TYPE_BLOCK_PC)) |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3100 | error_value = 0; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3101 | |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3102 | if (check_for_unit_attention(h, cmd)) { |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3103 | *retry_cmd = !(cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC); |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3104 | return 0; |
| 3105 | } |
| 3106 | |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3107 | /* Not SG_IO or similar? */ |
| 3108 | if (cmd->rq->cmd_type != REQ_TYPE_BLOCK_PC) { |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3109 | if (error_value != 0) |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3110 | dev_warn(&h->pdev->dev, "cmd %p has CHECK CONDITION" |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3111 | " sense key = 0x%x\n", cmd, sense_key); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3112 | return error_value; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3113 | } |
| 3114 | |
| 3115 | /* SG_IO or similar, copy sense data back */ |
| 3116 | if (cmd->rq->sense) { |
| 3117 | if (cmd->rq->sense_len > cmd->err_info->SenseLen) |
| 3118 | cmd->rq->sense_len = cmd->err_info->SenseLen; |
| 3119 | memcpy(cmd->rq->sense, cmd->err_info->SenseInfo, |
| 3120 | cmd->rq->sense_len); |
| 3121 | } else |
| 3122 | cmd->rq->sense_len = 0; |
| 3123 | |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3124 | return error_value; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3125 | } |
| 3126 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3127 | /* checks the status of the job and calls complete buffers to mark all |
Jens Axboe | a9925a0 | 2006-01-09 16:04:06 +0100 | [diff] [blame] | 3128 | * buffers for the completed job. Note that this function does not need |
| 3129 | * to hold the hba/queue lock. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3130 | */ |
| 3131 | static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd, |
| 3132 | int timeout) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3133 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3134 | int retry_cmd = 0; |
Mike Miller (OS Dev) | 198b766 | 2007-05-08 00:29:34 -0700 | [diff] [blame] | 3135 | struct request *rq = cmd->rq; |
| 3136 | |
| 3137 | rq->errors = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3138 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3139 | if (timeout) |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3140 | rq->errors = make_status_bytes(0, 0, 0, DRIVER_TIMEOUT); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3141 | |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3142 | if (cmd->err_info->CommandStatus == 0) /* no error has occurred */ |
| 3143 | goto after_error_processing; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3144 | |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3145 | switch (cmd->err_info->CommandStatus) { |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3146 | case CMD_TARGET_STATUS: |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3147 | rq->errors = evaluate_target_status(h, cmd, &retry_cmd); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3148 | break; |
| 3149 | case CMD_DATA_UNDERRUN: |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3150 | if (cmd->rq->cmd_type == REQ_TYPE_FS) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3151 | dev_warn(&h->pdev->dev, "cmd %p has" |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3152 | " completed with data underrun " |
| 3153 | "reported\n", cmd); |
Tejun Heo | c3a4d78 | 2009-05-07 22:24:37 +0900 | [diff] [blame] | 3154 | cmd->rq->resid_len = cmd->err_info->ResidualCnt; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3155 | } |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3156 | break; |
| 3157 | case CMD_DATA_OVERRUN: |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3158 | if (cmd->rq->cmd_type == REQ_TYPE_FS) |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3159 | dev_warn(&h->pdev->dev, "cciss: cmd %p has" |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3160 | " completed with data overrun " |
| 3161 | "reported\n", cmd); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3162 | break; |
| 3163 | case CMD_INVALID: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3164 | dev_warn(&h->pdev->dev, "cciss: cmd %p is " |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3165 | "reported invalid\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3166 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3167 | cmd->err_info->CommandStatus, DRIVER_OK, |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3168 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
| 3169 | DID_PASSTHROUGH : DID_ERROR); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3170 | break; |
| 3171 | case CMD_PROTOCOL_ERR: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3172 | dev_warn(&h->pdev->dev, "cciss: cmd %p has " |
| 3173 | "protocol error\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3174 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3175 | cmd->err_info->CommandStatus, DRIVER_OK, |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3176 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
| 3177 | DID_PASSTHROUGH : DID_ERROR); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3178 | break; |
| 3179 | case CMD_HARDWARE_ERR: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3180 | dev_warn(&h->pdev->dev, "cciss: cmd %p had " |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3181 | " hardware error\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3182 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3183 | cmd->err_info->CommandStatus, DRIVER_OK, |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3184 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
| 3185 | DID_PASSTHROUGH : DID_ERROR); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3186 | break; |
| 3187 | case CMD_CONNECTION_LOST: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3188 | dev_warn(&h->pdev->dev, "cciss: cmd %p had " |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3189 | "connection lost\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3190 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3191 | cmd->err_info->CommandStatus, DRIVER_OK, |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3192 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
| 3193 | DID_PASSTHROUGH : DID_ERROR); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3194 | break; |
| 3195 | case CMD_ABORTED: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3196 | dev_warn(&h->pdev->dev, "cciss: cmd %p was " |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3197 | "aborted\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3198 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3199 | cmd->err_info->CommandStatus, DRIVER_OK, |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3200 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
| 3201 | DID_PASSTHROUGH : DID_ABORT); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3202 | break; |
| 3203 | case CMD_ABORT_FAILED: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3204 | dev_warn(&h->pdev->dev, "cciss: cmd %p reports " |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3205 | "abort failed\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3206 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3207 | cmd->err_info->CommandStatus, DRIVER_OK, |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3208 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
| 3209 | DID_PASSTHROUGH : DID_ERROR); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3210 | break; |
| 3211 | case CMD_UNSOLICITED_ABORT: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3212 | dev_warn(&h->pdev->dev, "cciss%d: unsolicited " |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3213 | "abort %p\n", h->ctlr, cmd); |
| 3214 | if (cmd->retry_count < MAX_CMD_RETRIES) { |
| 3215 | retry_cmd = 1; |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3216 | dev_warn(&h->pdev->dev, "retrying %p\n", cmd); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3217 | cmd->retry_count++; |
| 3218 | } else |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3219 | dev_warn(&h->pdev->dev, |
| 3220 | "%p retried too many times\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3221 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3222 | cmd->err_info->CommandStatus, DRIVER_OK, |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3223 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
| 3224 | DID_PASSTHROUGH : DID_ABORT); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3225 | break; |
| 3226 | case CMD_TIMEOUT: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3227 | dev_warn(&h->pdev->dev, "cmd %p timedout\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3228 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3229 | cmd->err_info->CommandStatus, DRIVER_OK, |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3230 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
| 3231 | DID_PASSTHROUGH : DID_ERROR); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3232 | break; |
Stephen M. Cameron | 6d9a4f9 | 2011-03-12 10:02:30 +0100 | [diff] [blame] | 3233 | case CMD_UNABORTABLE: |
| 3234 | dev_warn(&h->pdev->dev, "cmd %p unabortable\n", cmd); |
| 3235 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3236 | cmd->err_info->CommandStatus, DRIVER_OK, |
| 3237 | cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC ? |
| 3238 | DID_PASSTHROUGH : DID_ERROR); |
| 3239 | break; |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3240 | default: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3241 | dev_warn(&h->pdev->dev, "cmd %p returned " |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3242 | "unknown status %x\n", cmd, |
| 3243 | cmd->err_info->CommandStatus); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3244 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3245 | cmd->err_info->CommandStatus, DRIVER_OK, |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3246 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
| 3247 | DID_PASSTHROUGH : DID_ERROR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3248 | } |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3249 | |
| 3250 | after_error_processing: |
| 3251 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3252 | /* We need to return this command */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3253 | if (retry_cmd) { |
| 3254 | resend_cciss_cmd(h, cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3255 | return; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3256 | } |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3257 | cmd->rq->completion_data = cmd; |
Jens Axboe | a9925a0 | 2006-01-09 16:04:06 +0100 | [diff] [blame] | 3258 | blk_complete_request(cmd->rq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3259 | } |
| 3260 | |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3261 | static inline u32 cciss_tag_contains_index(u32 tag) |
| 3262 | { |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3263 | #define DIRECT_LOOKUP_BIT 0x10 |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3264 | return tag & DIRECT_LOOKUP_BIT; |
| 3265 | } |
| 3266 | |
| 3267 | static inline u32 cciss_tag_to_index(u32 tag) |
| 3268 | { |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3269 | #define DIRECT_LOOKUP_SHIFT 5 |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3270 | return tag >> DIRECT_LOOKUP_SHIFT; |
| 3271 | } |
| 3272 | |
Stephen M. Cameron | 0498cc2 | 2011-03-12 10:02:16 +0100 | [diff] [blame] | 3273 | static inline u32 cciss_tag_discard_error_bits(ctlr_info_t *h, u32 tag) |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3274 | { |
Stephen M. Cameron | 0498cc2 | 2011-03-12 10:02:16 +0100 | [diff] [blame] | 3275 | #define CCISS_PERF_ERROR_BITS ((1 << DIRECT_LOOKUP_SHIFT) - 1) |
| 3276 | #define CCISS_SIMPLE_ERROR_BITS 0x03 |
| 3277 | if (likely(h->transMethod & CFGTBL_Trans_Performant)) |
| 3278 | return tag & ~CCISS_PERF_ERROR_BITS; |
| 3279 | return tag & ~CCISS_SIMPLE_ERROR_BITS; |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3280 | } |
| 3281 | |
| 3282 | static inline void cciss_mark_tag_indexed(u32 *tag) |
| 3283 | { |
| 3284 | *tag |= DIRECT_LOOKUP_BIT; |
| 3285 | } |
| 3286 | |
| 3287 | static inline void cciss_set_tag_index(u32 *tag, u32 index) |
| 3288 | { |
| 3289 | *tag |= (index << DIRECT_LOOKUP_SHIFT); |
| 3290 | } |
| 3291 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3292 | /* |
| 3293 | * Get a request and submit it to the controller. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3294 | */ |
Jens Axboe | 165125e | 2007-07-24 09:28:11 +0200 | [diff] [blame] | 3295 | static void do_cciss_request(struct request_queue *q) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3296 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3297 | ctlr_info_t *h = q->queuedata; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3298 | CommandList_struct *c; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 3299 | sector_t start_blk; |
| 3300 | int seg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3301 | struct request *creq; |
| 3302 | u64bit temp64; |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3303 | struct scatterlist *tmp_sg; |
| 3304 | SGDescriptor_struct *curr_sg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3305 | drive_info_struct *drv; |
| 3306 | int i, dir; |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3307 | int sg_index = 0; |
| 3308 | int chained = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3309 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3310 | queue: |
Tejun Heo | 9934c8c | 2009-05-08 11:54:16 +0900 | [diff] [blame] | 3311 | creq = blk_peek_request(q); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3312 | if (!creq) |
| 3313 | goto startio; |
| 3314 | |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3315 | BUG_ON(creq->nr_phys_segments > h->maxsgentries); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3316 | |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 3317 | c = cmd_alloc(h); |
| 3318 | if (!c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3319 | goto full; |
| 3320 | |
Tejun Heo | 9934c8c | 2009-05-08 11:54:16 +0900 | [diff] [blame] | 3321 | blk_start_request(creq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3322 | |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3323 | tmp_sg = h->scatter_list[c->cmdindex]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3324 | spin_unlock_irq(q->queue_lock); |
| 3325 | |
| 3326 | c->cmd_type = CMD_RWREQ; |
| 3327 | c->rq = creq; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3328 | |
| 3329 | /* fill in the request */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3330 | drv = creq->rq_disk->private_data; |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 3331 | c->Header.ReplyQueue = 0; /* unused in simple mode */ |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 3332 | /* got command from pool, so use the command block index instead */ |
| 3333 | /* for direct lookups. */ |
| 3334 | /* The first 2 bits are reserved for controller error reporting. */ |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3335 | cciss_set_tag_index(&c->Header.Tag.lower, c->cmdindex); |
| 3336 | cciss_mark_tag_indexed(&c->Header.Tag.lower); |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 3337 | memcpy(&c->Header.LUN, drv->LunID, sizeof(drv->LunID)); |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 3338 | c->Request.CDBLen = 10; /* 12 byte commands not in FW yet; */ |
| 3339 | c->Request.Type.Type = TYPE_CMD; /* It is a command. */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3340 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 3341 | c->Request.Type.Direction = |
Mike Miller | a52de24 | 2006-12-18 11:00:14 +0100 | [diff] [blame] | 3342 | (rq_data_dir(creq) == READ) ? XFER_READ : XFER_WRITE; |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 3343 | c->Request.Timeout = 0; /* Don't time out */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3344 | c->Request.CDB[0] = |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 3345 | (rq_data_dir(creq) == READ) ? h->cciss_read : h->cciss_write; |
Tejun Heo | 83096eb | 2009-05-07 22:24:39 +0900 | [diff] [blame] | 3346 | start_blk = blk_rq_pos(creq); |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3347 | dev_dbg(&h->pdev->dev, "sector =%d nr_sectors=%d\n", |
Tejun Heo | 83096eb | 2009-05-07 22:24:39 +0900 | [diff] [blame] | 3348 | (int)blk_rq_pos(creq), (int)blk_rq_sectors(creq)); |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3349 | sg_init_table(tmp_sg, h->maxsgentries); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3350 | seg = blk_rq_map_sg(q, creq, tmp_sg); |
| 3351 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3352 | /* get the DMA records for the setup */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3353 | if (c->Request.Type.Direction == XFER_READ) |
| 3354 | dir = PCI_DMA_FROMDEVICE; |
| 3355 | else |
| 3356 | dir = PCI_DMA_TODEVICE; |
| 3357 | |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3358 | curr_sg = c->SG; |
| 3359 | sg_index = 0; |
| 3360 | chained = 0; |
| 3361 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3362 | for (i = 0; i < seg; i++) { |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3363 | if (((sg_index+1) == (h->max_cmd_sgentries)) && |
| 3364 | !chained && ((seg - i) > 1)) { |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3365 | /* Point to next chain block. */ |
Stephen M. Cameron | dccc9b5 | 2010-02-26 16:01:27 -0600 | [diff] [blame] | 3366 | curr_sg = h->cmd_sg_list[c->cmdindex]; |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3367 | sg_index = 0; |
| 3368 | chained = 1; |
| 3369 | } |
| 3370 | curr_sg[sg_index].Len = tmp_sg[i].length; |
Jens Axboe | 45711f1 | 2007-10-22 21:19:53 +0200 | [diff] [blame] | 3371 | temp64.val = (__u64) pci_map_page(h->pdev, sg_page(&tmp_sg[i]), |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3372 | tmp_sg[i].offset, |
| 3373 | tmp_sg[i].length, dir); |
| 3374 | curr_sg[sg_index].Addr.lower = temp64.val32.lower; |
| 3375 | curr_sg[sg_index].Addr.upper = temp64.val32.upper; |
| 3376 | curr_sg[sg_index].Ext = 0; /* we are not chaining */ |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3377 | ++sg_index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3378 | } |
Stephen M. Cameron | d45033e | 2010-02-26 16:01:37 -0600 | [diff] [blame] | 3379 | if (chained) |
| 3380 | cciss_map_sg_chain_block(h, c, h->cmd_sg_list[c->cmdindex], |
| 3381 | (seg - (h->max_cmd_sgentries - 1)) * |
| 3382 | sizeof(SGDescriptor_struct)); |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3383 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3384 | /* track how many SG entries we are using */ |
| 3385 | if (seg > h->maxSG) |
| 3386 | h->maxSG = seg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3387 | |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3388 | dev_dbg(&h->pdev->dev, "Submitting %u sectors in %d segments " |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3389 | "chained[%d]\n", |
| 3390 | blk_rq_sectors(creq), seg, chained); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3391 | |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3392 | c->Header.SGTotal = seg + chained; |
| 3393 | if (seg <= h->max_cmd_sgentries) |
| 3394 | c->Header.SGList = c->Header.SGTotal; |
| 3395 | else |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3396 | c->Header.SGList = h->max_cmd_sgentries; |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3397 | set_performant_mode(h, c); |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3398 | |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3399 | if (likely(creq->cmd_type == REQ_TYPE_FS)) { |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3400 | if(h->cciss_read == CCISS_READ_10) { |
| 3401 | c->Request.CDB[1] = 0; |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 3402 | c->Request.CDB[2] = (start_blk >> 24) & 0xff; /* MSB */ |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3403 | c->Request.CDB[3] = (start_blk >> 16) & 0xff; |
| 3404 | c->Request.CDB[4] = (start_blk >> 8) & 0xff; |
| 3405 | c->Request.CDB[5] = start_blk & 0xff; |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 3406 | c->Request.CDB[6] = 0; /* (sect >> 24) & 0xff; MSB */ |
Tejun Heo | 83096eb | 2009-05-07 22:24:39 +0900 | [diff] [blame] | 3407 | c->Request.CDB[7] = (blk_rq_sectors(creq) >> 8) & 0xff; |
| 3408 | c->Request.CDB[8] = blk_rq_sectors(creq) & 0xff; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3409 | c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0; |
| 3410 | } else { |
Randy Dunlap | 582539e | 2008-02-06 01:36:54 -0800 | [diff] [blame] | 3411 | u32 upper32 = upper_32_bits(start_blk); |
| 3412 | |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3413 | c->Request.CDBLen = 16; |
| 3414 | c->Request.CDB[1]= 0; |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 3415 | c->Request.CDB[2]= (upper32 >> 24) & 0xff; /* MSB */ |
Randy Dunlap | 582539e | 2008-02-06 01:36:54 -0800 | [diff] [blame] | 3416 | c->Request.CDB[3]= (upper32 >> 16) & 0xff; |
| 3417 | c->Request.CDB[4]= (upper32 >> 8) & 0xff; |
| 3418 | c->Request.CDB[5]= upper32 & 0xff; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3419 | c->Request.CDB[6]= (start_blk >> 24) & 0xff; |
| 3420 | c->Request.CDB[7]= (start_blk >> 16) & 0xff; |
| 3421 | c->Request.CDB[8]= (start_blk >> 8) & 0xff; |
| 3422 | c->Request.CDB[9]= start_blk & 0xff; |
Tejun Heo | 83096eb | 2009-05-07 22:24:39 +0900 | [diff] [blame] | 3423 | c->Request.CDB[10]= (blk_rq_sectors(creq) >> 24) & 0xff; |
| 3424 | c->Request.CDB[11]= (blk_rq_sectors(creq) >> 16) & 0xff; |
| 3425 | c->Request.CDB[12]= (blk_rq_sectors(creq) >> 8) & 0xff; |
| 3426 | c->Request.CDB[13]= blk_rq_sectors(creq) & 0xff; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3427 | c->Request.CDB[14] = c->Request.CDB[15] = 0; |
| 3428 | } |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3429 | } else if (creq->cmd_type == REQ_TYPE_BLOCK_PC) { |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3430 | c->Request.CDBLen = creq->cmd_len; |
| 3431 | memcpy(c->Request.CDB, creq->cmd, BLK_MAX_CDB); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 3432 | } else { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3433 | dev_warn(&h->pdev->dev, "bad request type %d\n", |
| 3434 | creq->cmd_type); |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3435 | BUG(); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 3436 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3437 | |
| 3438 | spin_lock_irq(q->queue_lock); |
| 3439 | |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 3440 | addQ(&h->reqQ, c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3441 | h->Qdepth++; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3442 | if (h->Qdepth > h->maxQsinceinit) |
| 3443 | h->maxQsinceinit = h->Qdepth; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3444 | |
| 3445 | goto queue; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 3446 | full: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3447 | blk_stop_queue(q); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 3448 | startio: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3449 | /* We will already have the driver lock here so not need |
| 3450 | * to lock it. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3451 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3452 | start_io(h); |
| 3453 | } |
| 3454 | |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3455 | static inline unsigned long get_next_completion(ctlr_info_t *h) |
| 3456 | { |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3457 | return h->access.command_completed(h); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3458 | } |
| 3459 | |
| 3460 | static inline int interrupt_pending(ctlr_info_t *h) |
| 3461 | { |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3462 | return h->access.intr_pending(h); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3463 | } |
| 3464 | |
| 3465 | static inline long interrupt_not_for_us(ctlr_info_t *h) |
| 3466 | { |
Stephen M. Cameron | 8112586 | 2010-07-19 13:46:54 -0500 | [diff] [blame] | 3467 | return ((h->access.intr_pending(h) == 0) || |
Mike Miller | 2cf3af1 | 2010-06-02 12:58:02 -0700 | [diff] [blame] | 3468 | (h->interrupts_enabled == 0)); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3469 | } |
| 3470 | |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3471 | static inline int bad_tag(ctlr_info_t *h, u32 tag_index, |
| 3472 | u32 raw_tag) |
| 3473 | { |
| 3474 | if (unlikely(tag_index >= h->nr_cmds)) { |
| 3475 | dev_warn(&h->pdev->dev, "bad tag 0x%08x ignored.\n", raw_tag); |
| 3476 | return 1; |
| 3477 | } |
| 3478 | return 0; |
| 3479 | } |
| 3480 | |
| 3481 | static inline void finish_cmd(ctlr_info_t *h, CommandList_struct *c, |
| 3482 | u32 raw_tag) |
| 3483 | { |
| 3484 | removeQ(c); |
| 3485 | if (likely(c->cmd_type == CMD_RWREQ)) |
| 3486 | complete_command(h, c, 0); |
| 3487 | else if (c->cmd_type == CMD_IOCTL_PEND) |
| 3488 | complete(c->waiting); |
| 3489 | #ifdef CONFIG_CISS_SCSI_TAPE |
| 3490 | else if (c->cmd_type == CMD_SCSI) |
| 3491 | complete_scsi_command(c, 0, raw_tag); |
| 3492 | #endif |
| 3493 | } |
| 3494 | |
Mike Miller | 29979a7 | 2010-06-11 13:13:35 +0200 | [diff] [blame] | 3495 | static inline u32 next_command(ctlr_info_t *h) |
| 3496 | { |
| 3497 | u32 a; |
| 3498 | |
Stephen M. Cameron | 0498cc2 | 2011-03-12 10:02:16 +0100 | [diff] [blame] | 3499 | if (unlikely(!(h->transMethod & CFGTBL_Trans_Performant))) |
Mike Miller | 29979a7 | 2010-06-11 13:13:35 +0200 | [diff] [blame] | 3500 | return h->access.command_completed(h); |
| 3501 | |
| 3502 | if ((*(h->reply_pool_head) & 1) == (h->reply_pool_wraparound)) { |
| 3503 | a = *(h->reply_pool_head); /* Next cmd in ring buffer */ |
| 3504 | (h->reply_pool_head)++; |
| 3505 | h->commands_outstanding--; |
| 3506 | } else { |
| 3507 | a = FIFO_EMPTY; |
| 3508 | } |
| 3509 | /* Check for wraparound */ |
| 3510 | if (h->reply_pool_head == (h->reply_pool + h->max_commands)) { |
| 3511 | h->reply_pool_head = h->reply_pool; |
| 3512 | h->reply_pool_wraparound ^= 1; |
| 3513 | } |
| 3514 | return a; |
| 3515 | } |
| 3516 | |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3517 | /* process completion of an indexed ("direct lookup") command */ |
| 3518 | static inline u32 process_indexed_cmd(ctlr_info_t *h, u32 raw_tag) |
| 3519 | { |
| 3520 | u32 tag_index; |
| 3521 | CommandList_struct *c; |
| 3522 | |
| 3523 | tag_index = cciss_tag_to_index(raw_tag); |
| 3524 | if (bad_tag(h, tag_index, raw_tag)) |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3525 | return next_command(h); |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3526 | c = h->cmd_pool + tag_index; |
| 3527 | finish_cmd(h, c, raw_tag); |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3528 | return next_command(h); |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3529 | } |
| 3530 | |
| 3531 | /* process completion of a non-indexed command */ |
| 3532 | static inline u32 process_nonindexed_cmd(ctlr_info_t *h, u32 raw_tag) |
| 3533 | { |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3534 | CommandList_struct *c = NULL; |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3535 | __u32 busaddr_masked, tag_masked; |
| 3536 | |
Stephen M. Cameron | 0498cc2 | 2011-03-12 10:02:16 +0100 | [diff] [blame] | 3537 | tag_masked = cciss_tag_discard_error_bits(h, raw_tag); |
Jens Axboe | e6e1ee9 | 2011-01-10 21:50:33 +0100 | [diff] [blame] | 3538 | list_for_each_entry(c, &h->cmpQ, list) { |
Stephen M. Cameron | 0498cc2 | 2011-03-12 10:02:16 +0100 | [diff] [blame] | 3539 | busaddr_masked = cciss_tag_discard_error_bits(h, c->busaddr); |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3540 | if (busaddr_masked == tag_masked) { |
| 3541 | finish_cmd(h, c, raw_tag); |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3542 | return next_command(h); |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3543 | } |
| 3544 | } |
| 3545 | bad_tag(h, h->nr_cmds + 1, raw_tag); |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3546 | return next_command(h); |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3547 | } |
| 3548 | |
Stephen M. Cameron | 5afe278 | 2011-05-03 14:53:52 -0500 | [diff] [blame] | 3549 | /* Some controllers, like p400, will give us one interrupt |
| 3550 | * after a soft reset, even if we turned interrupts off. |
| 3551 | * Only need to check for this in the cciss_xxx_discard_completions |
| 3552 | * functions. |
| 3553 | */ |
| 3554 | static int ignore_bogus_interrupt(ctlr_info_t *h) |
| 3555 | { |
| 3556 | if (likely(!reset_devices)) |
| 3557 | return 0; |
| 3558 | |
| 3559 | if (likely(h->interrupts_enabled)) |
| 3560 | return 0; |
| 3561 | |
| 3562 | dev_info(&h->pdev->dev, "Received interrupt while interrupts disabled " |
| 3563 | "(known firmware bug.) Ignoring.\n"); |
| 3564 | |
| 3565 | return 1; |
| 3566 | } |
| 3567 | |
| 3568 | static irqreturn_t cciss_intx_discard_completions(int irq, void *dev_id) |
| 3569 | { |
| 3570 | ctlr_info_t *h = dev_id; |
| 3571 | unsigned long flags; |
| 3572 | u32 raw_tag; |
| 3573 | |
| 3574 | if (ignore_bogus_interrupt(h)) |
| 3575 | return IRQ_NONE; |
| 3576 | |
| 3577 | if (interrupt_not_for_us(h)) |
| 3578 | return IRQ_NONE; |
| 3579 | spin_lock_irqsave(&h->lock, flags); |
| 3580 | while (interrupt_pending(h)) { |
| 3581 | raw_tag = get_next_completion(h); |
| 3582 | while (raw_tag != FIFO_EMPTY) |
| 3583 | raw_tag = next_command(h); |
| 3584 | } |
| 3585 | spin_unlock_irqrestore(&h->lock, flags); |
| 3586 | return IRQ_HANDLED; |
| 3587 | } |
| 3588 | |
| 3589 | static irqreturn_t cciss_msix_discard_completions(int irq, void *dev_id) |
| 3590 | { |
| 3591 | ctlr_info_t *h = dev_id; |
| 3592 | unsigned long flags; |
| 3593 | u32 raw_tag; |
| 3594 | |
| 3595 | if (ignore_bogus_interrupt(h)) |
| 3596 | return IRQ_NONE; |
| 3597 | |
| 3598 | spin_lock_irqsave(&h->lock, flags); |
| 3599 | raw_tag = get_next_completion(h); |
| 3600 | while (raw_tag != FIFO_EMPTY) |
| 3601 | raw_tag = next_command(h); |
| 3602 | spin_unlock_irqrestore(&h->lock, flags); |
| 3603 | return IRQ_HANDLED; |
| 3604 | } |
| 3605 | |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3606 | static irqreturn_t do_cciss_intx(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3607 | { |
| 3608 | ctlr_info_t *h = dev_id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3609 | unsigned long flags; |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3610 | u32 raw_tag; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3611 | |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3612 | if (interrupt_not_for_us(h)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3613 | return IRQ_NONE; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 3614 | spin_lock_irqsave(&h->lock, flags); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3615 | while (interrupt_pending(h)) { |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3616 | raw_tag = get_next_completion(h); |
| 3617 | while (raw_tag != FIFO_EMPTY) { |
| 3618 | if (cciss_tag_contains_index(raw_tag)) |
| 3619 | raw_tag = process_indexed_cmd(h, raw_tag); |
| 3620 | else |
| 3621 | raw_tag = process_nonindexed_cmd(h, raw_tag); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3622 | } |
| 3623 | } |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 3624 | spin_unlock_irqrestore(&h->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3625 | return IRQ_HANDLED; |
| 3626 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3627 | |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3628 | /* Add a second interrupt handler for MSI/MSI-X mode. In this mode we never |
| 3629 | * check the interrupt pending register because it is not set. |
| 3630 | */ |
| 3631 | static irqreturn_t do_cciss_msix_intr(int irq, void *dev_id) |
| 3632 | { |
| 3633 | ctlr_info_t *h = dev_id; |
| 3634 | unsigned long flags; |
| 3635 | u32 raw_tag; |
| 3636 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 3637 | spin_lock_irqsave(&h->lock, flags); |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3638 | raw_tag = get_next_completion(h); |
| 3639 | while (raw_tag != FIFO_EMPTY) { |
| 3640 | if (cciss_tag_contains_index(raw_tag)) |
| 3641 | raw_tag = process_indexed_cmd(h, raw_tag); |
| 3642 | else |
| 3643 | raw_tag = process_nonindexed_cmd(h, raw_tag); |
| 3644 | } |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 3645 | spin_unlock_irqrestore(&h->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3646 | return IRQ_HANDLED; |
| 3647 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3648 | |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3649 | /** |
| 3650 | * add_to_scan_list() - add controller to rescan queue |
| 3651 | * @h: Pointer to the controller. |
| 3652 | * |
| 3653 | * Adds the controller to the rescan queue if not already on the queue. |
| 3654 | * |
| 3655 | * returns 1 if added to the queue, 0 if skipped (could be on the |
| 3656 | * queue already, or the controller could be initializing or shutting |
| 3657 | * down). |
| 3658 | **/ |
| 3659 | static int add_to_scan_list(struct ctlr_info *h) |
| 3660 | { |
| 3661 | struct ctlr_info *test_h; |
| 3662 | int found = 0; |
| 3663 | int ret = 0; |
| 3664 | |
| 3665 | if (h->busy_initializing) |
| 3666 | return 0; |
| 3667 | |
| 3668 | if (!mutex_trylock(&h->busy_shutting_down)) |
| 3669 | return 0; |
| 3670 | |
| 3671 | mutex_lock(&scan_mutex); |
| 3672 | list_for_each_entry(test_h, &scan_q, scan_list) { |
| 3673 | if (test_h == h) { |
| 3674 | found = 1; |
| 3675 | break; |
| 3676 | } |
| 3677 | } |
| 3678 | if (!found && !h->busy_scanning) { |
Wolfram Sang | 16735d0 | 2013-11-14 14:32:02 -0800 | [diff] [blame] | 3679 | reinit_completion(&h->scan_wait); |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3680 | list_add_tail(&h->scan_list, &scan_q); |
| 3681 | ret = 1; |
| 3682 | } |
| 3683 | mutex_unlock(&scan_mutex); |
| 3684 | mutex_unlock(&h->busy_shutting_down); |
| 3685 | |
| 3686 | return ret; |
| 3687 | } |
| 3688 | |
| 3689 | /** |
| 3690 | * remove_from_scan_list() - remove controller from rescan queue |
| 3691 | * @h: Pointer to the controller. |
| 3692 | * |
| 3693 | * Removes the controller from the rescan queue if present. Blocks if |
Stephen M. Cameron | fd8489c | 2009-11-12 12:49:19 -0600 | [diff] [blame] | 3694 | * the controller is currently conducting a rescan. The controller |
| 3695 | * can be in one of three states: |
| 3696 | * 1. Doesn't need a scan |
| 3697 | * 2. On the scan list, but not scanning yet (we remove it) |
| 3698 | * 3. Busy scanning (and not on the list). In this case we want to wait for |
| 3699 | * the scan to complete to make sure the scanning thread for this |
| 3700 | * controller is completely idle. |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3701 | **/ |
| 3702 | static void remove_from_scan_list(struct ctlr_info *h) |
| 3703 | { |
| 3704 | struct ctlr_info *test_h, *tmp_h; |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3705 | |
| 3706 | mutex_lock(&scan_mutex); |
| 3707 | list_for_each_entry_safe(test_h, tmp_h, &scan_q, scan_list) { |
Stephen M. Cameron | fd8489c | 2009-11-12 12:49:19 -0600 | [diff] [blame] | 3708 | if (test_h == h) { /* state 2. */ |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3709 | list_del(&h->scan_list); |
| 3710 | complete_all(&h->scan_wait); |
| 3711 | mutex_unlock(&scan_mutex); |
| 3712 | return; |
| 3713 | } |
| 3714 | } |
Stephen M. Cameron | fd8489c | 2009-11-12 12:49:19 -0600 | [diff] [blame] | 3715 | if (h->busy_scanning) { /* state 3. */ |
| 3716 | mutex_unlock(&scan_mutex); |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3717 | wait_for_completion(&h->scan_wait); |
Stephen M. Cameron | fd8489c | 2009-11-12 12:49:19 -0600 | [diff] [blame] | 3718 | } else { /* state 1, nothing to do. */ |
| 3719 | mutex_unlock(&scan_mutex); |
| 3720 | } |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3721 | } |
| 3722 | |
| 3723 | /** |
| 3724 | * scan_thread() - kernel thread used to rescan controllers |
| 3725 | * @data: Ignored. |
| 3726 | * |
| 3727 | * A kernel thread used scan for drive topology changes on |
| 3728 | * controllers. The thread processes only one controller at a time |
| 3729 | * using a queue. Controllers are added to the queue using |
| 3730 | * add_to_scan_list() and removed from the queue either after done |
| 3731 | * processing or using remove_from_scan_list(). |
| 3732 | * |
| 3733 | * returns 0. |
| 3734 | **/ |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3735 | static int scan_thread(void *data) |
| 3736 | { |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3737 | struct ctlr_info *h; |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3738 | |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3739 | while (1) { |
| 3740 | set_current_state(TASK_INTERRUPTIBLE); |
| 3741 | schedule(); |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3742 | if (kthread_should_stop()) |
| 3743 | break; |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3744 | |
| 3745 | while (1) { |
| 3746 | mutex_lock(&scan_mutex); |
| 3747 | if (list_empty(&scan_q)) { |
| 3748 | mutex_unlock(&scan_mutex); |
| 3749 | break; |
| 3750 | } |
| 3751 | |
| 3752 | h = list_entry(scan_q.next, |
| 3753 | struct ctlr_info, |
| 3754 | scan_list); |
| 3755 | list_del(&h->scan_list); |
| 3756 | h->busy_scanning = 1; |
| 3757 | mutex_unlock(&scan_mutex); |
| 3758 | |
Stephen M. Cameron | d06dfbd | 2009-11-12 12:49:50 -0600 | [diff] [blame] | 3759 | rebuild_lun_table(h, 0, 0); |
| 3760 | complete_all(&h->scan_wait); |
| 3761 | mutex_lock(&scan_mutex); |
| 3762 | h->busy_scanning = 0; |
| 3763 | mutex_unlock(&scan_mutex); |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3764 | } |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3765 | } |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3766 | |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3767 | return 0; |
| 3768 | } |
| 3769 | |
| 3770 | static int check_for_unit_attention(ctlr_info_t *h, CommandList_struct *c) |
| 3771 | { |
| 3772 | if (c->err_info->SenseInfo[2] != UNIT_ATTENTION) |
| 3773 | return 0; |
| 3774 | |
| 3775 | switch (c->err_info->SenseInfo[12]) { |
| 3776 | case STATE_CHANGED: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3777 | dev_warn(&h->pdev->dev, "a state change " |
| 3778 | "detected, command retried\n"); |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3779 | return 1; |
| 3780 | break; |
| 3781 | case LUN_FAILED: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3782 | dev_warn(&h->pdev->dev, "LUN failure " |
| 3783 | "detected, action required\n"); |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3784 | return 1; |
| 3785 | break; |
| 3786 | case REPORT_LUNS_CHANGED: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3787 | dev_warn(&h->pdev->dev, "report LUN data changed\n"); |
Stephen M. Cameron | da00218 | 2009-11-12 12:49:55 -0600 | [diff] [blame] | 3788 | /* |
| 3789 | * Here, we could call add_to_scan_list and wake up the scan thread, |
| 3790 | * except that it's quite likely that we will get more than one |
| 3791 | * REPORT_LUNS_CHANGED condition in quick succession, which means |
| 3792 | * that those which occur after the first one will likely happen |
| 3793 | * *during* the scan_thread's rescan. And the rescan code is not |
| 3794 | * robust enough to restart in the middle, undoing what it has already |
| 3795 | * done, and it's not clear that it's even possible to do this, since |
| 3796 | * part of what it does is notify the block layer, which starts |
| 3797 | * doing it's own i/o to read partition tables and so on, and the |
| 3798 | * driver doesn't have visibility to know what might need undoing. |
| 3799 | * In any event, if possible, it is horribly complicated to get right |
| 3800 | * so we just don't do it for now. |
| 3801 | * |
| 3802 | * Note: this REPORT_LUNS_CHANGED condition only occurs on the MSA2012. |
| 3803 | */ |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3804 | return 1; |
| 3805 | break; |
| 3806 | case POWER_OR_RESET: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3807 | dev_warn(&h->pdev->dev, |
| 3808 | "a power on or device reset detected\n"); |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3809 | return 1; |
| 3810 | break; |
| 3811 | case UNIT_ATTENTION_CLEARED: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3812 | dev_warn(&h->pdev->dev, |
| 3813 | "unit attention cleared by another initiator\n"); |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3814 | return 1; |
| 3815 | break; |
| 3816 | default: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3817 | dev_warn(&h->pdev->dev, "unknown unit attention detected\n"); |
| 3818 | return 1; |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3819 | } |
| 3820 | } |
| 3821 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3822 | /* |
Bjorn Helgaas | d14c4ab | 2006-06-25 05:49:04 -0700 | [diff] [blame] | 3823 | * We cannot read the structure directly, for portability we must use |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3824 | * the io functions. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3825 | * This is for debug only. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3826 | */ |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3827 | static void print_cfg_table(ctlr_info_t *h) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3828 | { |
| 3829 | int i; |
| 3830 | char temp_name[17]; |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3831 | CfgTable_struct *tb = h->cfgtable; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3832 | |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3833 | dev_dbg(&h->pdev->dev, "Controller Configuration information\n"); |
| 3834 | dev_dbg(&h->pdev->dev, "------------------------------------\n"); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3835 | for (i = 0; i < 4; i++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3836 | temp_name[i] = readb(&(tb->Signature[i])); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3837 | temp_name[4] = '\0'; |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3838 | dev_dbg(&h->pdev->dev, " Signature = %s\n", temp_name); |
| 3839 | dev_dbg(&h->pdev->dev, " Spec Number = %d\n", |
| 3840 | readl(&(tb->SpecValence))); |
| 3841 | dev_dbg(&h->pdev->dev, " Transport methods supported = 0x%x\n", |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3842 | readl(&(tb->TransportSupport))); |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3843 | dev_dbg(&h->pdev->dev, " Transport methods active = 0x%x\n", |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3844 | readl(&(tb->TransportActive))); |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3845 | dev_dbg(&h->pdev->dev, " Requested transport Method = 0x%x\n", |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3846 | readl(&(tb->HostWrite.TransportRequest))); |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3847 | dev_dbg(&h->pdev->dev, " Coalesce Interrupt Delay = 0x%x\n", |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3848 | readl(&(tb->HostWrite.CoalIntDelay))); |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3849 | dev_dbg(&h->pdev->dev, " Coalesce Interrupt Count = 0x%x\n", |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3850 | readl(&(tb->HostWrite.CoalIntCount))); |
Colin Ian King | a8036df | 2015-12-06 22:19:40 +0000 | [diff] [blame] | 3851 | dev_dbg(&h->pdev->dev, " Max outstanding commands = 0x%x\n", |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3852 | readl(&(tb->CmdsOutMax))); |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3853 | dev_dbg(&h->pdev->dev, " Bus Types = 0x%x\n", |
| 3854 | readl(&(tb->BusTypes))); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3855 | for (i = 0; i < 16; i++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3856 | temp_name[i] = readb(&(tb->ServerName[i])); |
| 3857 | temp_name[16] = '\0'; |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3858 | dev_dbg(&h->pdev->dev, " Server Name = %s\n", temp_name); |
| 3859 | dev_dbg(&h->pdev->dev, " Heartbeat Counter = 0x%x\n\n\n", |
| 3860 | readl(&(tb->HeartBeat))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3861 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3862 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3863 | static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3864 | { |
| 3865 | int i, offset, mem_type, bar_type; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3866 | if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3867 | return 0; |
| 3868 | offset = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3869 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { |
| 3870 | bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3871 | if (bar_type == PCI_BASE_ADDRESS_SPACE_IO) |
| 3872 | offset += 4; |
| 3873 | else { |
| 3874 | mem_type = pci_resource_flags(pdev, i) & |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3875 | PCI_BASE_ADDRESS_MEM_TYPE_MASK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3876 | switch (mem_type) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3877 | case PCI_BASE_ADDRESS_MEM_TYPE_32: |
| 3878 | case PCI_BASE_ADDRESS_MEM_TYPE_1M: |
| 3879 | offset += 4; /* 32 bit */ |
| 3880 | break; |
| 3881 | case PCI_BASE_ADDRESS_MEM_TYPE_64: |
| 3882 | offset += 8; |
| 3883 | break; |
| 3884 | default: /* reserved in PCI 2.2 */ |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3885 | dev_warn(&pdev->dev, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3886 | "Base address is invalid\n"); |
| 3887 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3888 | break; |
| 3889 | } |
| 3890 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3891 | if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0) |
| 3892 | return i + 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3893 | } |
| 3894 | return -1; |
| 3895 | } |
| 3896 | |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3897 | /* Fill in bucket_map[], given nsgs (the max number of |
| 3898 | * scatter gather elements supported) and bucket[], |
| 3899 | * which is an array of 8 integers. The bucket[] array |
| 3900 | * contains 8 different DMA transfer sizes (in 16 |
| 3901 | * byte increments) which the controller uses to fetch |
| 3902 | * commands. This function fills in bucket_map[], which |
| 3903 | * maps a given number of scatter gather elements to one of |
| 3904 | * the 8 DMA transfer sizes. The point of it is to allow the |
| 3905 | * controller to only do as much DMA as needed to fetch the |
| 3906 | * command, with the DMA transfer size encoded in the lower |
| 3907 | * bits of the command address. |
| 3908 | */ |
| 3909 | static void calc_bucket_map(int bucket[], int num_buckets, |
| 3910 | int nsgs, int *bucket_map) |
| 3911 | { |
| 3912 | int i, j, b, size; |
| 3913 | |
| 3914 | /* even a command with 0 SGs requires 4 blocks */ |
| 3915 | #define MINIMUM_TRANSFER_BLOCKS 4 |
| 3916 | #define NUM_BUCKETS 8 |
| 3917 | /* Note, bucket_map must have nsgs+1 entries. */ |
| 3918 | for (i = 0; i <= nsgs; i++) { |
| 3919 | /* Compute size of a command with i SG entries */ |
| 3920 | size = i + MINIMUM_TRANSFER_BLOCKS; |
| 3921 | b = num_buckets; /* Assume the biggest bucket */ |
| 3922 | /* Find the bucket that is just big enough */ |
| 3923 | for (j = 0; j < 8; j++) { |
| 3924 | if (bucket[j] >= size) { |
| 3925 | b = j; |
| 3926 | break; |
| 3927 | } |
| 3928 | } |
| 3929 | /* for a command with i SG entries, use bucket b. */ |
| 3930 | bucket_map[i] = b; |
| 3931 | } |
| 3932 | } |
| 3933 | |
Greg Kroah-Hartman | 8d85fce | 2012-12-21 15:13:49 -0800 | [diff] [blame] | 3934 | static void cciss_wait_for_mode_change_ack(ctlr_info_t *h) |
Stephen M. Cameron | 0f8a6a1 | 2010-07-19 13:46:01 -0500 | [diff] [blame] | 3935 | { |
| 3936 | int i; |
| 3937 | |
| 3938 | /* under certain very rare conditions, this can take awhile. |
| 3939 | * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right |
| 3940 | * as we enter this code.) */ |
| 3941 | for (i = 0; i < MAX_CONFIG_WAIT; i++) { |
| 3942 | if (!(readl(h->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq)) |
| 3943 | break; |
Stephen M. Cameron | 332c2f8 | 2010-10-22 14:21:22 -0500 | [diff] [blame] | 3944 | usleep_range(10000, 20000); |
Stephen M. Cameron | 0f8a6a1 | 2010-07-19 13:46:01 -0500 | [diff] [blame] | 3945 | } |
| 3946 | } |
| 3947 | |
Greg Kroah-Hartman | 8d85fce | 2012-12-21 15:13:49 -0800 | [diff] [blame] | 3948 | static void cciss_enter_performant_mode(ctlr_info_t *h, u32 use_short_tags) |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3949 | { |
Stephen M. Cameron | b993313 | 2010-07-19 13:46:07 -0500 | [diff] [blame] | 3950 | /* This is a bit complicated. There are 8 registers on |
| 3951 | * the controller which we write to to tell it 8 different |
| 3952 | * sizes of commands which there may be. It's a way of |
| 3953 | * reducing the DMA done to fetch each command. Encoded into |
| 3954 | * each command's tag are 3 bits which communicate to the controller |
| 3955 | * which of the eight sizes that command fits within. The size of |
| 3956 | * each command depends on how many scatter gather entries there are. |
| 3957 | * Each SG entry requires 16 bytes. The eight registers are programmed |
| 3958 | * with the number of 16-byte blocks a command of that size requires. |
| 3959 | * The smallest command possible requires 5 such 16 byte blocks. |
| 3960 | * the largest command possible requires MAXSGENTRIES + 4 16-byte |
| 3961 | * blocks. Note, this only extends to the SG entries contained |
| 3962 | * within the command block, and does not extend to chained blocks |
| 3963 | * of SG elements. bft[] contains the eight values we write to |
| 3964 | * the registers. They are not evenly distributed, but have more |
| 3965 | * sizes for small commands, and fewer sizes for larger commands. |
| 3966 | */ |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3967 | __u32 trans_offset; |
Stephen M. Cameron | b993313 | 2010-07-19 13:46:07 -0500 | [diff] [blame] | 3968 | int bft[8] = { 5, 6, 8, 10, 12, 20, 28, MAXSGENTRIES + 4}; |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3969 | /* |
| 3970 | * 5 = 1 s/g entry or 4k |
| 3971 | * 6 = 2 s/g entry or 8k |
| 3972 | * 8 = 4 s/g entry or 16k |
| 3973 | * 10 = 6 s/g entry or 24k |
| 3974 | */ |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3975 | unsigned long register_value; |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3976 | BUILD_BUG_ON(28 > MAXSGENTRIES + 4); |
| 3977 | |
Stephen M. Cameron | b993313 | 2010-07-19 13:46:07 -0500 | [diff] [blame] | 3978 | h->reply_pool_wraparound = 1; /* spec: init to 1 */ |
| 3979 | |
| 3980 | /* Controller spec: zero out this buffer. */ |
| 3981 | memset(h->reply_pool, 0, h->max_commands * sizeof(__u64)); |
| 3982 | h->reply_pool_head = h->reply_pool; |
| 3983 | |
| 3984 | trans_offset = readl(&(h->cfgtable->TransMethodOffset)); |
| 3985 | calc_bucket_map(bft, ARRAY_SIZE(bft), h->maxsgentries, |
| 3986 | h->blockFetchTable); |
| 3987 | writel(bft[0], &h->transtable->BlockFetch0); |
| 3988 | writel(bft[1], &h->transtable->BlockFetch1); |
| 3989 | writel(bft[2], &h->transtable->BlockFetch2); |
| 3990 | writel(bft[3], &h->transtable->BlockFetch3); |
| 3991 | writel(bft[4], &h->transtable->BlockFetch4); |
| 3992 | writel(bft[5], &h->transtable->BlockFetch5); |
| 3993 | writel(bft[6], &h->transtable->BlockFetch6); |
| 3994 | writel(bft[7], &h->transtable->BlockFetch7); |
| 3995 | |
| 3996 | /* size of controller ring buffer */ |
| 3997 | writel(h->max_commands, &h->transtable->RepQSize); |
| 3998 | writel(1, &h->transtable->RepQCount); |
| 3999 | writel(0, &h->transtable->RepQCtrAddrLow32); |
| 4000 | writel(0, &h->transtable->RepQCtrAddrHigh32); |
| 4001 | writel(h->reply_pool_dhandle, &h->transtable->RepQAddr0Low32); |
| 4002 | writel(0, &h->transtable->RepQAddr0High32); |
Stephen M. Cameron | 0498cc2 | 2011-03-12 10:02:16 +0100 | [diff] [blame] | 4003 | writel(CFGTBL_Trans_Performant | use_short_tags, |
Stephen M. Cameron | b993313 | 2010-07-19 13:46:07 -0500 | [diff] [blame] | 4004 | &(h->cfgtable->HostWrite.TransportRequest)); |
| 4005 | |
| 4006 | writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); |
| 4007 | cciss_wait_for_mode_change_ack(h); |
| 4008 | register_value = readl(&(h->cfgtable->TransportActive)); |
| 4009 | if (!(register_value & CFGTBL_Trans_Performant)) |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4010 | dev_warn(&h->pdev->dev, "cciss: unable to get board into" |
Stephen M. Cameron | b993313 | 2010-07-19 13:46:07 -0500 | [diff] [blame] | 4011 | " performant mode\n"); |
| 4012 | } |
| 4013 | |
Greg Kroah-Hartman | 8d85fce | 2012-12-21 15:13:49 -0800 | [diff] [blame] | 4014 | static void cciss_put_controller_into_performant_mode(ctlr_info_t *h) |
Stephen M. Cameron | b993313 | 2010-07-19 13:46:07 -0500 | [diff] [blame] | 4015 | { |
| 4016 | __u32 trans_support; |
| 4017 | |
Joseph Handzik | 1304953 | 2011-08-08 11:40:15 +0200 | [diff] [blame] | 4018 | if (cciss_simple_mode) |
| 4019 | return; |
| 4020 | |
Stephen M. Cameron | ff5f58f0 | 2010-07-19 13:45:51 -0500 | [diff] [blame] | 4021 | dev_dbg(&h->pdev->dev, "Trying to put board into Performant mode\n"); |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 4022 | /* Attempt to put controller into performant mode if supported */ |
| 4023 | /* Does board support performant mode? */ |
| 4024 | trans_support = readl(&(h->cfgtable->TransportSupport)); |
| 4025 | if (!(trans_support & PERFORMANT_MODE)) |
| 4026 | return; |
| 4027 | |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4028 | dev_dbg(&h->pdev->dev, "Placing controller into performant mode\n"); |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 4029 | /* Performant mode demands commands on a 32 byte boundary |
| 4030 | * pci_alloc_consistent aligns on page boundarys already. |
| 4031 | * Just need to check if divisible by 32 |
| 4032 | */ |
| 4033 | if ((sizeof(CommandList_struct) % 32) != 0) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4034 | dev_warn(&h->pdev->dev, "%s %d %s\n", |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 4035 | "cciss info: command size[", |
| 4036 | (int)sizeof(CommandList_struct), |
| 4037 | "] not divisible by 32, no performant mode..\n"); |
| 4038 | return; |
| 4039 | } |
| 4040 | |
| 4041 | /* Performant mode ring buffer and supporting data structures */ |
| 4042 | h->reply_pool = (__u64 *)pci_alloc_consistent( |
| 4043 | h->pdev, h->max_commands * sizeof(__u64), |
| 4044 | &(h->reply_pool_dhandle)); |
| 4045 | |
| 4046 | /* Need a block fetch table for performant mode */ |
| 4047 | h->blockFetchTable = kmalloc(((h->maxsgentries+1) * |
| 4048 | sizeof(__u32)), GFP_KERNEL); |
| 4049 | |
| 4050 | if ((h->reply_pool == NULL) || (h->blockFetchTable == NULL)) |
| 4051 | goto clean_up; |
| 4052 | |
Stephen M. Cameron | 0498cc2 | 2011-03-12 10:02:16 +0100 | [diff] [blame] | 4053 | cciss_enter_performant_mode(h, |
| 4054 | trans_support & CFGTBL_Trans_use_short_tags); |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 4055 | |
| 4056 | /* Change the access methods to the performant access methods */ |
| 4057 | h->access = SA5_performant_access; |
Stephen M. Cameron | b993313 | 2010-07-19 13:46:07 -0500 | [diff] [blame] | 4058 | h->transMethod = CFGTBL_Trans_Performant; |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 4059 | |
| 4060 | return; |
| 4061 | clean_up: |
| 4062 | kfree(h->blockFetchTable); |
| 4063 | if (h->reply_pool) |
| 4064 | pci_free_consistent(h->pdev, |
| 4065 | h->max_commands * sizeof(__u64), |
| 4066 | h->reply_pool, |
| 4067 | h->reply_pool_dhandle); |
| 4068 | return; |
| 4069 | |
| 4070 | } /* cciss_put_controller_into_performant_mode */ |
| 4071 | |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 4072 | /* If MSI/MSI-X is supported by the kernel we will try to enable it on |
| 4073 | * controllers that are capable. If not, we use IO-APIC mode. |
| 4074 | */ |
| 4075 | |
Greg Kroah-Hartman | 8d85fce | 2012-12-21 15:13:49 -0800 | [diff] [blame] | 4076 | static void cciss_interrupt_mode(ctlr_info_t *h) |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 4077 | { |
| 4078 | #ifdef CONFIG_PCI_MSI |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4079 | int err; |
| 4080 | struct msix_entry cciss_msix_entries[4] = { {0, 0}, {0, 1}, |
| 4081 | {0, 2}, {0, 3} |
| 4082 | }; |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 4083 | |
| 4084 | /* Some boards advertise MSI but don't really support it */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4085 | if ((h->board_id == 0x40700E11) || (h->board_id == 0x40800E11) || |
| 4086 | (h->board_id == 0x40820E11) || (h->board_id == 0x40830E11)) |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 4087 | goto default_int_mode; |
| 4088 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4089 | if (pci_find_capability(h->pdev, PCI_CAP_ID_MSIX)) { |
Alexander Gordeev | 24cddb8 | 2014-04-21 17:19:32 +0200 | [diff] [blame] | 4090 | err = pci_enable_msix_exact(h->pdev, cciss_msix_entries, 4); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4091 | if (!err) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4092 | h->intr[0] = cciss_msix_entries[0].vector; |
| 4093 | h->intr[1] = cciss_msix_entries[1].vector; |
| 4094 | h->intr[2] = cciss_msix_entries[2].vector; |
| 4095 | h->intr[3] = cciss_msix_entries[3].vector; |
| 4096 | h->msix_vector = 1; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4097 | return; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4098 | } else { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4099 | dev_warn(&h->pdev->dev, |
| 4100 | "MSI-X init failed %d\n", err); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4101 | } |
| 4102 | } |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4103 | if (pci_find_capability(h->pdev, PCI_CAP_ID_MSI)) { |
| 4104 | if (!pci_enable_msi(h->pdev)) |
| 4105 | h->msi_vector = 1; |
| 4106 | else |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4107 | dev_warn(&h->pdev->dev, "MSI init failed\n"); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4108 | } |
Mike Miller | 1ecb9c0 | 2006-12-06 20:35:13 -0800 | [diff] [blame] | 4109 | default_int_mode: |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4110 | #endif /* CONFIG_PCI_MSI */ |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 4111 | /* if we get here we're going to use the default interrupt mode */ |
Joseph Handzik | 1304953 | 2011-08-08 11:40:15 +0200 | [diff] [blame] | 4112 | h->intr[h->intr_mode] = h->pdev->irq; |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 4113 | return; |
| 4114 | } |
| 4115 | |
Greg Kroah-Hartman | 8d85fce | 2012-12-21 15:13:49 -0800 | [diff] [blame] | 4116 | static int cciss_lookup_board_id(struct pci_dev *pdev, u32 *board_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4117 | { |
Stephen M. Cameron | 6539fa9 | 2010-07-19 13:44:55 -0500 | [diff] [blame] | 4118 | int i; |
| 4119 | u32 subsystem_vendor_id, subsystem_device_id; |
Stephen M. Cameron | 2ec24ff | 2009-10-13 09:18:22 +0200 | [diff] [blame] | 4120 | |
| 4121 | subsystem_vendor_id = pdev->subsystem_vendor; |
| 4122 | subsystem_device_id = pdev->subsystem_device; |
Stephen M. Cameron | 6539fa9 | 2010-07-19 13:44:55 -0500 | [diff] [blame] | 4123 | *board_id = ((subsystem_device_id << 16) & 0xffff0000) | |
| 4124 | subsystem_vendor_id; |
Stephen M. Cameron | 2ec24ff | 2009-10-13 09:18:22 +0200 | [diff] [blame] | 4125 | |
Mike Miller | e4292e05 | 2013-04-29 11:55:53 -0700 | [diff] [blame] | 4126 | for (i = 0; i < ARRAY_SIZE(products); i++) { |
| 4127 | /* Stand aside for hpsa driver on request */ |
| 4128 | if (cciss_allow_hpsa) |
| 4129 | return -ENODEV; |
Stephen M. Cameron | 6539fa9 | 2010-07-19 13:44:55 -0500 | [diff] [blame] | 4130 | if (*board_id == products[i].board_id) |
| 4131 | return i; |
Mike Miller | e4292e05 | 2013-04-29 11:55:53 -0700 | [diff] [blame] | 4132 | } |
Stephen M. Cameron | 6539fa9 | 2010-07-19 13:44:55 -0500 | [diff] [blame] | 4133 | dev_warn(&pdev->dev, "unrecognized board ID: 0x%08x, ignoring.\n", |
| 4134 | *board_id); |
| 4135 | return -ENODEV; |
| 4136 | } |
| 4137 | |
Stephen M. Cameron | dd9c426 | 2010-07-19 13:45:00 -0500 | [diff] [blame] | 4138 | static inline bool cciss_board_disabled(ctlr_info_t *h) |
| 4139 | { |
| 4140 | u16 command; |
| 4141 | |
| 4142 | (void) pci_read_config_word(h->pdev, PCI_COMMAND, &command); |
| 4143 | return ((command & PCI_COMMAND_MEMORY) == 0); |
| 4144 | } |
| 4145 | |
Greg Kroah-Hartman | 8d85fce | 2012-12-21 15:13:49 -0800 | [diff] [blame] | 4146 | static int cciss_pci_find_memory_BAR(struct pci_dev *pdev, |
| 4147 | unsigned long *memory_bar) |
Stephen M. Cameron | d474830 | 2010-07-19 13:45:10 -0500 | [diff] [blame] | 4148 | { |
| 4149 | int i; |
| 4150 | |
| 4151 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) |
| 4152 | if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) { |
| 4153 | /* addressing mode bits already removed */ |
| 4154 | *memory_bar = pci_resource_start(pdev, i); |
| 4155 | dev_dbg(&pdev->dev, "memory BAR = %lx\n", |
| 4156 | *memory_bar); |
| 4157 | return 0; |
| 4158 | } |
| 4159 | dev_warn(&pdev->dev, "no memory BAR found\n"); |
| 4160 | return -ENODEV; |
| 4161 | } |
| 4162 | |
Greg Kroah-Hartman | 8d85fce | 2012-12-21 15:13:49 -0800 | [diff] [blame] | 4163 | static int cciss_wait_for_board_state(struct pci_dev *pdev, |
| 4164 | void __iomem *vaddr, int wait_for_ready) |
Stephen M. Cameron | afa842f | 2010-10-22 14:21:07 -0500 | [diff] [blame] | 4165 | #define BOARD_READY 1 |
| 4166 | #define BOARD_NOT_READY 0 |
Stephen M. Cameron | e99ba13 | 2010-07-19 13:45:15 -0500 | [diff] [blame] | 4167 | { |
Stephen M. Cameron | afa842f | 2010-10-22 14:21:07 -0500 | [diff] [blame] | 4168 | int i, iterations; |
Stephen M. Cameron | e99ba13 | 2010-07-19 13:45:15 -0500 | [diff] [blame] | 4169 | u32 scratchpad; |
| 4170 | |
Stephen M. Cameron | afa842f | 2010-10-22 14:21:07 -0500 | [diff] [blame] | 4171 | if (wait_for_ready) |
| 4172 | iterations = CCISS_BOARD_READY_ITERATIONS; |
| 4173 | else |
| 4174 | iterations = CCISS_BOARD_NOT_READY_ITERATIONS; |
| 4175 | |
| 4176 | for (i = 0; i < iterations; i++) { |
| 4177 | scratchpad = readl(vaddr + SA5_SCRATCHPAD_OFFSET); |
| 4178 | if (wait_for_ready) { |
| 4179 | if (scratchpad == CCISS_FIRMWARE_READY) |
| 4180 | return 0; |
| 4181 | } else { |
| 4182 | if (scratchpad != CCISS_FIRMWARE_READY) |
| 4183 | return 0; |
| 4184 | } |
Stephen M. Cameron | e99ba13 | 2010-07-19 13:45:15 -0500 | [diff] [blame] | 4185 | msleep(CCISS_BOARD_READY_POLL_INTERVAL_MSECS); |
| 4186 | } |
Stephen M. Cameron | afa842f | 2010-10-22 14:21:07 -0500 | [diff] [blame] | 4187 | dev_warn(&pdev->dev, "board not ready, timed out.\n"); |
Stephen M. Cameron | e99ba13 | 2010-07-19 13:45:15 -0500 | [diff] [blame] | 4188 | return -ENODEV; |
| 4189 | } |
| 4190 | |
Greg Kroah-Hartman | 8d85fce | 2012-12-21 15:13:49 -0800 | [diff] [blame] | 4191 | static int cciss_find_cfg_addrs(struct pci_dev *pdev, void __iomem *vaddr, |
| 4192 | u32 *cfg_base_addr, u64 *cfg_base_addr_index, |
| 4193 | u64 *cfg_offset) |
Stephen M. Cameron | 8e93bf6 | 2010-07-19 13:46:12 -0500 | [diff] [blame] | 4194 | { |
| 4195 | *cfg_base_addr = readl(vaddr + SA5_CTCFG_OFFSET); |
| 4196 | *cfg_offset = readl(vaddr + SA5_CTMEM_OFFSET); |
| 4197 | *cfg_base_addr &= (u32) 0x0000ffff; |
| 4198 | *cfg_base_addr_index = find_PCI_BAR_index(pdev, *cfg_base_addr); |
| 4199 | if (*cfg_base_addr_index == -1) { |
| 4200 | dev_warn(&pdev->dev, "cannot find cfg_base_addr_index, " |
| 4201 | "*cfg_base_addr = 0x%08x\n", *cfg_base_addr); |
Stephen M. Cameron | 2ec24ff | 2009-10-13 09:18:22 +0200 | [diff] [blame] | 4202 | return -ENODEV; |
| 4203 | } |
Stephen M. Cameron | 8e93bf6 | 2010-07-19 13:46:12 -0500 | [diff] [blame] | 4204 | return 0; |
| 4205 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4206 | |
Greg Kroah-Hartman | 8d85fce | 2012-12-21 15:13:49 -0800 | [diff] [blame] | 4207 | static int cciss_find_cfgtables(ctlr_info_t *h) |
Stephen M. Cameron | 4809d09 | 2010-07-19 13:45:21 -0500 | [diff] [blame] | 4208 | { |
| 4209 | u64 cfg_offset; |
| 4210 | u32 cfg_base_addr; |
| 4211 | u64 cfg_base_addr_index; |
| 4212 | u32 trans_offset; |
Stephen M. Cameron | 8e93bf6 | 2010-07-19 13:46:12 -0500 | [diff] [blame] | 4213 | int rc; |
Stephen M. Cameron | 4809d09 | 2010-07-19 13:45:21 -0500 | [diff] [blame] | 4214 | |
Stephen M. Cameron | 8e93bf6 | 2010-07-19 13:46:12 -0500 | [diff] [blame] | 4215 | rc = cciss_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr, |
| 4216 | &cfg_base_addr_index, &cfg_offset); |
| 4217 | if (rc) |
| 4218 | return rc; |
Stephen M. Cameron | 4809d09 | 2010-07-19 13:45:21 -0500 | [diff] [blame] | 4219 | h->cfgtable = remap_pci_mem(pci_resource_start(h->pdev, |
Wei Yongjun | d2b805d | 2013-03-22 09:11:00 -0600 | [diff] [blame] | 4220 | cfg_base_addr_index) + cfg_offset, sizeof(*h->cfgtable)); |
Stephen M. Cameron | 4809d09 | 2010-07-19 13:45:21 -0500 | [diff] [blame] | 4221 | if (!h->cfgtable) |
| 4222 | return -ENOMEM; |
Stephen M. Cameron | 62710ae | 2011-05-03 14:53:00 -0500 | [diff] [blame] | 4223 | rc = write_driver_ver_to_cfgtable(h->cfgtable); |
| 4224 | if (rc) |
| 4225 | return rc; |
Stephen M. Cameron | 4809d09 | 2010-07-19 13:45:21 -0500 | [diff] [blame] | 4226 | /* Find performant mode table. */ |
Stephen M. Cameron | 8e93bf6 | 2010-07-19 13:46:12 -0500 | [diff] [blame] | 4227 | trans_offset = readl(&h->cfgtable->TransMethodOffset); |
Stephen M. Cameron | 4809d09 | 2010-07-19 13:45:21 -0500 | [diff] [blame] | 4228 | h->transtable = remap_pci_mem(pci_resource_start(h->pdev, |
| 4229 | cfg_base_addr_index)+cfg_offset+trans_offset, |
| 4230 | sizeof(*h->transtable)); |
| 4231 | if (!h->transtable) |
| 4232 | return -ENOMEM; |
| 4233 | return 0; |
| 4234 | } |
| 4235 | |
Greg Kroah-Hartman | 8d85fce | 2012-12-21 15:13:49 -0800 | [diff] [blame] | 4236 | static void cciss_get_max_perf_mode_cmds(struct ctlr_info *h) |
Stephen M. Cameron | adfbc1f | 2010-07-19 13:46:28 -0500 | [diff] [blame] | 4237 | { |
| 4238 | h->max_commands = readl(&(h->cfgtable->MaxPerformantModeCommands)); |
Stephen M. Cameron | 186fb9c | 2010-10-22 14:21:17 -0500 | [diff] [blame] | 4239 | |
| 4240 | /* Limit commands in memory limited kdump scenario. */ |
| 4241 | if (reset_devices && h->max_commands > 32) |
| 4242 | h->max_commands = 32; |
| 4243 | |
Stephen M. Cameron | adfbc1f | 2010-07-19 13:46:28 -0500 | [diff] [blame] | 4244 | if (h->max_commands < 16) { |
| 4245 | dev_warn(&h->pdev->dev, "Controller reports " |
| 4246 | "max supported commands of %d, an obvious lie. " |
| 4247 | "Using 16. Ensure that firmware is up to date.\n", |
| 4248 | h->max_commands); |
| 4249 | h->max_commands = 16; |
| 4250 | } |
| 4251 | } |
| 4252 | |
Stephen M. Cameron | afadbf4 | 2010-07-19 13:45:31 -0500 | [diff] [blame] | 4253 | /* Interrogate the hardware for some limits: |
| 4254 | * max commands, max SG elements without chaining, and with chaining, |
| 4255 | * SG chain block size, etc. |
| 4256 | */ |
Greg Kroah-Hartman | 8d85fce | 2012-12-21 15:13:49 -0800 | [diff] [blame] | 4257 | static void cciss_find_board_params(ctlr_info_t *h) |
Stephen M. Cameron | afadbf4 | 2010-07-19 13:45:31 -0500 | [diff] [blame] | 4258 | { |
Stephen M. Cameron | adfbc1f | 2010-07-19 13:46:28 -0500 | [diff] [blame] | 4259 | cciss_get_max_perf_mode_cmds(h); |
Stephen M. Cameron | 8a4ec67 | 2011-05-03 14:54:12 -0500 | [diff] [blame] | 4260 | h->nr_cmds = h->max_commands - 4 - cciss_tape_cmds; |
Stephen M. Cameron | afadbf4 | 2010-07-19 13:45:31 -0500 | [diff] [blame] | 4261 | h->maxsgentries = readl(&(h->cfgtable->MaxSGElements)); |
| 4262 | /* |
Mike Miller | e7b18ed | 2013-09-11 14:20:11 -0700 | [diff] [blame] | 4263 | * The P600 may exhibit poor performnace under some workloads |
| 4264 | * if we use the value in the configuration table. Limit this |
| 4265 | * controller to MAXSGENTRIES (32) instead. |
| 4266 | */ |
| 4267 | if (h->board_id == 0x3225103C) |
| 4268 | h->maxsgentries = MAXSGENTRIES; |
| 4269 | /* |
Stephen M. Cameron | afadbf4 | 2010-07-19 13:45:31 -0500 | [diff] [blame] | 4270 | * Limit in-command s/g elements to 32 save dma'able memory. |
| 4271 | * Howvever spec says if 0, use 31 |
| 4272 | */ |
| 4273 | h->max_cmd_sgentries = 31; |
| 4274 | if (h->maxsgentries > 512) { |
| 4275 | h->max_cmd_sgentries = 32; |
| 4276 | h->chainsize = h->maxsgentries - h->max_cmd_sgentries + 1; |
| 4277 | h->maxsgentries--; /* save one for chain pointer */ |
| 4278 | } else { |
| 4279 | h->maxsgentries = 31; /* default to traditional values */ |
| 4280 | h->chainsize = 0; |
| 4281 | } |
| 4282 | } |
| 4283 | |
Stephen M. Cameron | 501b92c | 2010-07-19 13:45:36 -0500 | [diff] [blame] | 4284 | static inline bool CISS_signature_present(ctlr_info_t *h) |
| 4285 | { |
Akinobu Mita | d48c152 | 2012-11-08 16:12:23 -0800 | [diff] [blame] | 4286 | if (!check_signature(h->cfgtable->Signature, "CISS", 4)) { |
Stephen M. Cameron | 501b92c | 2010-07-19 13:45:36 -0500 | [diff] [blame] | 4287 | dev_warn(&h->pdev->dev, "not a valid CISS config table\n"); |
| 4288 | return false; |
| 4289 | } |
| 4290 | return true; |
| 4291 | } |
| 4292 | |
Stephen M. Cameron | 322e304 | 2010-07-19 13:45:41 -0500 | [diff] [blame] | 4293 | /* Need to enable prefetch in the SCSI core for 6400 in x86 */ |
| 4294 | static inline void cciss_enable_scsi_prefetch(ctlr_info_t *h) |
| 4295 | { |
| 4296 | #ifdef CONFIG_X86 |
| 4297 | u32 prefetch; |
| 4298 | |
| 4299 | prefetch = readl(&(h->cfgtable->SCSI_Prefetch)); |
| 4300 | prefetch |= 0x100; |
| 4301 | writel(prefetch, &(h->cfgtable->SCSI_Prefetch)); |
| 4302 | #endif |
| 4303 | } |
| 4304 | |
Stephen M. Cameron | bfd63ee | 2010-07-19 13:45:46 -0500 | [diff] [blame] | 4305 | /* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result |
| 4306 | * in a prefetch beyond physical memory. |
| 4307 | */ |
| 4308 | static inline void cciss_p600_dma_prefetch_quirk(ctlr_info_t *h) |
| 4309 | { |
| 4310 | u32 dma_prefetch; |
| 4311 | __u32 dma_refetch; |
| 4312 | |
| 4313 | if (h->board_id != 0x3225103C) |
| 4314 | return; |
| 4315 | dma_prefetch = readl(h->vaddr + I2O_DMA1_CFG); |
| 4316 | dma_prefetch |= 0x8000; |
| 4317 | writel(dma_prefetch, h->vaddr + I2O_DMA1_CFG); |
| 4318 | pci_read_config_dword(h->pdev, PCI_COMMAND_PARITY, &dma_refetch); |
| 4319 | dma_refetch |= 0x1; |
| 4320 | pci_write_config_dword(h->pdev, PCI_COMMAND_PARITY, dma_refetch); |
| 4321 | } |
| 4322 | |
Greg Kroah-Hartman | 8d85fce | 2012-12-21 15:13:49 -0800 | [diff] [blame] | 4323 | static int cciss_pci_init(ctlr_info_t *h) |
Stephen M. Cameron | 6539fa9 | 2010-07-19 13:44:55 -0500 | [diff] [blame] | 4324 | { |
Stephen M. Cameron | 4809d09 | 2010-07-19 13:45:21 -0500 | [diff] [blame] | 4325 | int prod_index, err; |
Stephen M. Cameron | 6539fa9 | 2010-07-19 13:44:55 -0500 | [diff] [blame] | 4326 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4327 | prod_index = cciss_lookup_board_id(h->pdev, &h->board_id); |
Stephen M. Cameron | 6539fa9 | 2010-07-19 13:44:55 -0500 | [diff] [blame] | 4328 | if (prod_index < 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4329 | return -ENODEV; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4330 | h->product_name = products[prod_index].product_name; |
| 4331 | h->access = *(products[prod_index].access); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4332 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4333 | if (cciss_board_disabled(h)) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4334 | dev_warn(&h->pdev->dev, "controller appears to be disabled\n"); |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 4335 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4336 | } |
Matthew Garrett | 1937335 | 2011-11-11 22:05:54 +0100 | [diff] [blame] | 4337 | |
| 4338 | pci_disable_link_state(h->pdev, PCIE_LINK_STATE_L0S | |
| 4339 | PCIE_LINK_STATE_L1 | PCIE_LINK_STATE_CLKPM); |
| 4340 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4341 | err = pci_enable_device(h->pdev); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4342 | if (err) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4343 | dev_warn(&h->pdev->dev, "Unable to Enable PCI device\n"); |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 4344 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4345 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4346 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4347 | err = pci_request_regions(h->pdev, "cciss"); |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 4348 | if (err) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4349 | dev_warn(&h->pdev->dev, |
| 4350 | "Cannot obtain PCI resources, aborting\n"); |
Mike Miller | 872225c | 2006-12-13 00:34:22 -0800 | [diff] [blame] | 4351 | return err; |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 4352 | } |
| 4353 | |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4354 | dev_dbg(&h->pdev->dev, "irq = %x\n", h->pdev->irq); |
| 4355 | dev_dbg(&h->pdev->dev, "board_id = %x\n", h->board_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4356 | |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 4357 | /* If the kernel supports MSI/MSI-X we will try to enable that functionality, |
| 4358 | * else we use the IO-APIC interrupt assigned to us by system ROM. |
| 4359 | */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4360 | cciss_interrupt_mode(h); |
| 4361 | err = cciss_pci_find_memory_BAR(h->pdev, &h->paddr); |
Stephen M. Cameron | d474830 | 2010-07-19 13:45:10 -0500 | [diff] [blame] | 4362 | if (err) |
Mike Miller | e143858 | 2009-04-02 12:50:56 -0700 | [diff] [blame] | 4363 | goto err_out_free_res; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4364 | h->vaddr = remap_pci_mem(h->paddr, 0x250); |
| 4365 | if (!h->vaddr) { |
Stephen M. Cameron | da55032 | 2010-07-19 13:45:26 -0500 | [diff] [blame] | 4366 | err = -ENOMEM; |
| 4367 | goto err_out_free_res; |
Mike Miller | e143858 | 2009-04-02 12:50:56 -0700 | [diff] [blame] | 4368 | } |
Stephen M. Cameron | afa842f | 2010-10-22 14:21:07 -0500 | [diff] [blame] | 4369 | err = cciss_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY); |
Stephen M. Cameron | e99ba13 | 2010-07-19 13:45:15 -0500 | [diff] [blame] | 4370 | if (err) |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 4371 | goto err_out_free_res; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4372 | err = cciss_find_cfgtables(h); |
Stephen M. Cameron | 4809d09 | 2010-07-19 13:45:21 -0500 | [diff] [blame] | 4373 | if (err) |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 4374 | goto err_out_free_res; |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4375 | print_cfg_table(h); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4376 | cciss_find_board_params(h); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4377 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4378 | if (!CISS_signature_present(h)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4379 | err = -ENODEV; |
| 4380 | goto err_out_free_res; |
| 4381 | } |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4382 | cciss_enable_scsi_prefetch(h); |
| 4383 | cciss_p600_dma_prefetch_quirk(h); |
Joseph Handzik | 1304953 | 2011-08-08 11:40:15 +0200 | [diff] [blame] | 4384 | err = cciss_enter_simple_mode(h); |
| 4385 | if (err) |
| 4386 | goto err_out_free_res; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4387 | cciss_put_controller_into_performant_mode(h); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4388 | return 0; |
| 4389 | |
Linus Torvalds | 5faad62 | 2006-12-13 09:15:34 -0800 | [diff] [blame] | 4390 | err_out_free_res: |
Mike Miller | 872225c | 2006-12-13 00:34:22 -0800 | [diff] [blame] | 4391 | /* |
| 4392 | * Deliberately omit pci_disable_device(): it does something nasty to |
| 4393 | * Smart Array controllers that pci_enable_device does not undo |
| 4394 | */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4395 | if (h->transtable) |
| 4396 | iounmap(h->transtable); |
| 4397 | if (h->cfgtable) |
| 4398 | iounmap(h->cfgtable); |
| 4399 | if (h->vaddr) |
| 4400 | iounmap(h->vaddr); |
| 4401 | pci_release_regions(h->pdev); |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 4402 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4403 | } |
| 4404 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 4405 | /* Function to find the first free pointer into our hba[] array |
| 4406 | * Returns -1 if no free entries are left. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4407 | */ |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4408 | static int alloc_cciss_hba(struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4409 | { |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 4410 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4411 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4412 | for (i = 0; i < MAX_CTLR; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4413 | if (!hba[i]) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4414 | ctlr_info_t *h; |
Jesper Juhl | f2912a1 | 2007-07-31 00:39:39 -0700 | [diff] [blame] | 4415 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4416 | h = kzalloc(sizeof(ctlr_info_t), GFP_KERNEL); |
| 4417 | if (!h) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4418 | goto Enomem; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4419 | hba[i] = h; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4420 | return i; |
| 4421 | } |
| 4422 | } |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4423 | dev_warn(&pdev->dev, "This driver supports a maximum" |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4424 | " of %d controllers.\n", MAX_CTLR); |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 4425 | return -1; |
| 4426 | Enomem: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4427 | dev_warn(&pdev->dev, "out of memory.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4428 | return -1; |
| 4429 | } |
| 4430 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4431 | static void free_hba(ctlr_info_t *h) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4432 | { |
Stephen M. Cameron | 2c93559 | 2009-09-17 13:47:50 -0500 | [diff] [blame] | 4433 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4434 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4435 | hba[h->ctlr] = NULL; |
Stephen M. Cameron | 2c93559 | 2009-09-17 13:47:50 -0500 | [diff] [blame] | 4436 | for (i = 0; i < h->highest_lun + 1; i++) |
| 4437 | if (h->gendisk[i] != NULL) |
| 4438 | put_disk(h->gendisk[i]); |
| 4439 | kfree(h); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4440 | } |
| 4441 | |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4442 | /* Send a message CDB to the firmware. */ |
Greg Kroah-Hartman | 8d85fce | 2012-12-21 15:13:49 -0800 | [diff] [blame] | 4443 | static int cciss_message(struct pci_dev *pdev, unsigned char opcode, |
| 4444 | unsigned char type) |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4445 | { |
| 4446 | typedef struct { |
| 4447 | CommandListHeader_struct CommandHeader; |
| 4448 | RequestBlock_struct Request; |
| 4449 | ErrDescriptor_struct ErrorDescriptor; |
| 4450 | } Command; |
| 4451 | static const size_t cmd_sz = sizeof(Command) + sizeof(ErrorInfo_struct); |
| 4452 | Command *cmd; |
| 4453 | dma_addr_t paddr64; |
| 4454 | uint32_t paddr32, tag; |
| 4455 | void __iomem *vaddr; |
| 4456 | int i, err; |
| 4457 | |
| 4458 | vaddr = ioremap_nocache(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); |
| 4459 | if (vaddr == NULL) |
| 4460 | return -ENOMEM; |
| 4461 | |
| 4462 | /* The Inbound Post Queue only accepts 32-bit physical addresses for the |
| 4463 | CCISS commands, so they must be allocated from the lower 4GiB of |
| 4464 | memory. */ |
Yang Hongyang | e930438 | 2009-04-13 14:40:14 -0700 | [diff] [blame] | 4465 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4466 | if (err) { |
| 4467 | iounmap(vaddr); |
| 4468 | return -ENOMEM; |
| 4469 | } |
| 4470 | |
| 4471 | cmd = pci_alloc_consistent(pdev, cmd_sz, &paddr64); |
| 4472 | if (cmd == NULL) { |
| 4473 | iounmap(vaddr); |
| 4474 | return -ENOMEM; |
| 4475 | } |
| 4476 | |
| 4477 | /* This must fit, because of the 32-bit consistent DMA mask. Also, |
| 4478 | although there's no guarantee, we assume that the address is at |
| 4479 | least 4-byte aligned (most likely, it's page-aligned). */ |
| 4480 | paddr32 = paddr64; |
| 4481 | |
| 4482 | cmd->CommandHeader.ReplyQueue = 0; |
| 4483 | cmd->CommandHeader.SGList = 0; |
| 4484 | cmd->CommandHeader.SGTotal = 0; |
| 4485 | cmd->CommandHeader.Tag.lower = paddr32; |
| 4486 | cmd->CommandHeader.Tag.upper = 0; |
| 4487 | memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8); |
| 4488 | |
| 4489 | cmd->Request.CDBLen = 16; |
| 4490 | cmd->Request.Type.Type = TYPE_MSG; |
| 4491 | cmd->Request.Type.Attribute = ATTR_HEADOFQUEUE; |
| 4492 | cmd->Request.Type.Direction = XFER_NONE; |
| 4493 | cmd->Request.Timeout = 0; /* Don't time out */ |
| 4494 | cmd->Request.CDB[0] = opcode; |
| 4495 | cmd->Request.CDB[1] = type; |
| 4496 | memset(&cmd->Request.CDB[2], 0, 14); /* the rest of the CDB is reserved */ |
| 4497 | |
| 4498 | cmd->ErrorDescriptor.Addr.lower = paddr32 + sizeof(Command); |
| 4499 | cmd->ErrorDescriptor.Addr.upper = 0; |
| 4500 | cmd->ErrorDescriptor.Len = sizeof(ErrorInfo_struct); |
| 4501 | |
| 4502 | writel(paddr32, vaddr + SA5_REQUEST_PORT_OFFSET); |
| 4503 | |
| 4504 | for (i = 0; i < 10; i++) { |
| 4505 | tag = readl(vaddr + SA5_REPLY_PORT_OFFSET); |
| 4506 | if ((tag & ~3) == paddr32) |
| 4507 | break; |
Stephen M. Cameron | 3e28601 | 2011-05-03 14:53:41 -0500 | [diff] [blame] | 4508 | msleep(CCISS_POST_RESET_NOOP_TIMEOUT_MSECS); |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4509 | } |
| 4510 | |
| 4511 | iounmap(vaddr); |
| 4512 | |
| 4513 | /* we leak the DMA buffer here ... no choice since the controller could |
| 4514 | still complete the command. */ |
| 4515 | if (i == 10) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4516 | dev_err(&pdev->dev, |
| 4517 | "controller message %02x:%02x timed out\n", |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4518 | opcode, type); |
| 4519 | return -ETIMEDOUT; |
| 4520 | } |
| 4521 | |
| 4522 | pci_free_consistent(pdev, cmd_sz, cmd, paddr64); |
| 4523 | |
| 4524 | if (tag & 2) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4525 | dev_err(&pdev->dev, "controller message %02x:%02x failed\n", |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4526 | opcode, type); |
| 4527 | return -EIO; |
| 4528 | } |
| 4529 | |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4530 | dev_info(&pdev->dev, "controller message %02x:%02x succeeded\n", |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4531 | opcode, type); |
| 4532 | return 0; |
| 4533 | } |
| 4534 | |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4535 | #define cciss_noop(p) cciss_message(p, 3, 0) |
| 4536 | |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4537 | static int cciss_controller_hard_reset(struct pci_dev *pdev, |
Stephen M. Cameron | bf2e2e6 | 2011-05-03 14:53:46 -0500 | [diff] [blame] | 4538 | void * __iomem vaddr, u32 use_doorbell) |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4539 | { |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4540 | u16 pmcsr; |
| 4541 | int pos; |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4542 | |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4543 | if (use_doorbell) { |
| 4544 | /* For everything after the P600, the PCI power state method |
| 4545 | * of resetting the controller doesn't work, so we have this |
| 4546 | * other way using the doorbell register. |
| 4547 | */ |
| 4548 | dev_info(&pdev->dev, "using doorbell to reset controller\n"); |
Stephen M. Cameron | bf2e2e6 | 2011-05-03 14:53:46 -0500 | [diff] [blame] | 4549 | writel(use_doorbell, vaddr + SA5_DOORBELL); |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4550 | } else { /* Try to do it the PCI power state way */ |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4551 | |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4552 | /* Quoting from the Open CISS Specification: "The Power |
| 4553 | * Management Control/Status Register (CSR) controls the power |
| 4554 | * state of the device. The normal operating state is D0, |
| 4555 | * CSR=00h. The software off state is D3, CSR=03h. To reset |
| 4556 | * the controller, place the interface device in D3 then to D0, |
| 4557 | * this causes a secondary PCI reset which will reset the |
| 4558 | * controller." */ |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4559 | |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4560 | pos = pci_find_capability(pdev, PCI_CAP_ID_PM); |
| 4561 | if (pos == 0) { |
| 4562 | dev_err(&pdev->dev, |
| 4563 | "cciss_controller_hard_reset: " |
| 4564 | "PCI PM not supported\n"); |
| 4565 | return -ENODEV; |
| 4566 | } |
| 4567 | dev_info(&pdev->dev, "using PCI PM to reset controller\n"); |
| 4568 | /* enter the D3hot power management state */ |
| 4569 | pci_read_config_word(pdev, pos + PCI_PM_CTRL, &pmcsr); |
| 4570 | pmcsr &= ~PCI_PM_CTRL_STATE_MASK; |
| 4571 | pmcsr |= PCI_D3hot; |
| 4572 | pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4573 | |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4574 | msleep(500); |
| 4575 | |
| 4576 | /* enter the D0 power management state */ |
| 4577 | pmcsr &= ~PCI_PM_CTRL_STATE_MASK; |
| 4578 | pmcsr |= PCI_D0; |
| 4579 | pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); |
Mike Miller | ab5dbeb | 2011-10-20 22:19:17 +0200 | [diff] [blame] | 4580 | |
| 4581 | /* |
| 4582 | * The P600 requires a small delay when changing states. |
| 4583 | * Otherwise we may think the board did not reset and we bail. |
| 4584 | * This for kdump only and is particular to the P600. |
| 4585 | */ |
| 4586 | msleep(500); |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4587 | } |
| 4588 | return 0; |
| 4589 | } |
| 4590 | |
Greg Kroah-Hartman | 8d85fce | 2012-12-21 15:13:49 -0800 | [diff] [blame] | 4591 | static void init_driver_version(char *driver_version, int len) |
Stephen M. Cameron | 62710ae | 2011-05-03 14:53:00 -0500 | [diff] [blame] | 4592 | { |
| 4593 | memset(driver_version, 0, len); |
| 4594 | strncpy(driver_version, "cciss " DRIVER_NAME, len - 1); |
| 4595 | } |
| 4596 | |
Greg Kroah-Hartman | 8d85fce | 2012-12-21 15:13:49 -0800 | [diff] [blame] | 4597 | static int write_driver_ver_to_cfgtable(CfgTable_struct __iomem *cfgtable) |
Stephen M. Cameron | 62710ae | 2011-05-03 14:53:00 -0500 | [diff] [blame] | 4598 | { |
| 4599 | char *driver_version; |
| 4600 | int i, size = sizeof(cfgtable->driver_version); |
| 4601 | |
| 4602 | driver_version = kmalloc(size, GFP_KERNEL); |
| 4603 | if (!driver_version) |
| 4604 | return -ENOMEM; |
| 4605 | |
| 4606 | init_driver_version(driver_version, size); |
| 4607 | for (i = 0; i < size; i++) |
| 4608 | writeb(driver_version[i], &cfgtable->driver_version[i]); |
| 4609 | kfree(driver_version); |
| 4610 | return 0; |
| 4611 | } |
| 4612 | |
Greg Kroah-Hartman | 8d85fce | 2012-12-21 15:13:49 -0800 | [diff] [blame] | 4613 | static void read_driver_ver_from_cfgtable(CfgTable_struct __iomem *cfgtable, |
| 4614 | unsigned char *driver_ver) |
Stephen M. Cameron | 62710ae | 2011-05-03 14:53:00 -0500 | [diff] [blame] | 4615 | { |
| 4616 | int i; |
| 4617 | |
| 4618 | for (i = 0; i < sizeof(cfgtable->driver_version); i++) |
| 4619 | driver_ver[i] = readb(&cfgtable->driver_version[i]); |
| 4620 | } |
| 4621 | |
Greg Kroah-Hartman | 8d85fce | 2012-12-21 15:13:49 -0800 | [diff] [blame] | 4622 | static int controller_reset_failed(CfgTable_struct __iomem *cfgtable) |
Stephen M. Cameron | 62710ae | 2011-05-03 14:53:00 -0500 | [diff] [blame] | 4623 | { |
| 4624 | |
| 4625 | char *driver_ver, *old_driver_ver; |
| 4626 | int rc, size = sizeof(cfgtable->driver_version); |
| 4627 | |
| 4628 | old_driver_ver = kmalloc(2 * size, GFP_KERNEL); |
| 4629 | if (!old_driver_ver) |
| 4630 | return -ENOMEM; |
| 4631 | driver_ver = old_driver_ver + size; |
| 4632 | |
| 4633 | /* After a reset, the 32 bytes of "driver version" in the cfgtable |
| 4634 | * should have been changed, otherwise we know the reset failed. |
| 4635 | */ |
| 4636 | init_driver_version(old_driver_ver, size); |
| 4637 | read_driver_ver_from_cfgtable(cfgtable, driver_ver); |
| 4638 | rc = !memcmp(driver_ver, old_driver_ver, size); |
| 4639 | kfree(old_driver_ver); |
| 4640 | return rc; |
| 4641 | } |
| 4642 | |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4643 | /* This does a hard reset of the controller using PCI power management |
| 4644 | * states or using the doorbell register. */ |
Greg Kroah-Hartman | 8d85fce | 2012-12-21 15:13:49 -0800 | [diff] [blame] | 4645 | static int cciss_kdump_hard_reset_controller(struct pci_dev *pdev) |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4646 | { |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4647 | u64 cfg_offset; |
| 4648 | u32 cfg_base_addr; |
| 4649 | u64 cfg_base_addr_index; |
| 4650 | void __iomem *vaddr; |
| 4651 | unsigned long paddr; |
Stephen M. Cameron | 62710ae | 2011-05-03 14:53:00 -0500 | [diff] [blame] | 4652 | u32 misc_fw_support; |
Stephen M. Cameron | f442e64 | 2010-10-22 14:21:12 -0500 | [diff] [blame] | 4653 | int rc; |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4654 | CfgTable_struct __iomem *cfgtable; |
Stephen M. Cameron | bf2e2e6 | 2011-05-03 14:53:46 -0500 | [diff] [blame] | 4655 | u32 use_doorbell; |
Stephen M. Cameron | 058a0f9 | 2010-07-19 13:46:33 -0500 | [diff] [blame] | 4656 | u32 board_id; |
Stephen M. Cameron | f442e64 | 2010-10-22 14:21:12 -0500 | [diff] [blame] | 4657 | u16 command_register; |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4658 | |
| 4659 | /* For controllers as old a the p600, this is very nearly |
| 4660 | * the same thing as |
| 4661 | * |
| 4662 | * pci_save_state(pci_dev); |
| 4663 | * pci_set_power_state(pci_dev, PCI_D3hot); |
| 4664 | * pci_set_power_state(pci_dev, PCI_D0); |
| 4665 | * pci_restore_state(pci_dev); |
| 4666 | * |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4667 | * For controllers newer than the P600, the pci power state |
| 4668 | * method of resetting doesn't work so we have another way |
| 4669 | * using the doorbell register. |
| 4670 | */ |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4671 | |
Stephen M. Cameron | 058a0f9 | 2010-07-19 13:46:33 -0500 | [diff] [blame] | 4672 | /* Exclude 640x boards. These are two pci devices in one slot |
| 4673 | * which share a battery backed cache module. One controls the |
| 4674 | * cache, the other accesses the cache through the one that controls |
| 4675 | * it. If we reset the one controlling the cache, the other will |
| 4676 | * likely not be happy. Just forbid resetting this conjoined mess. |
| 4677 | */ |
| 4678 | cciss_lookup_board_id(pdev, &board_id); |
Stephen M. Cameron | ec52d5f | 2011-05-03 14:54:02 -0500 | [diff] [blame] | 4679 | if (!ctlr_is_resettable(board_id)) { |
Tomas Henzl | b9ea9dc | 2015-02-17 17:40:22 +0100 | [diff] [blame] | 4680 | dev_warn(&pdev->dev, "Controller not resettable\n"); |
Stephen M. Cameron | 058a0f9 | 2010-07-19 13:46:33 -0500 | [diff] [blame] | 4681 | return -ENODEV; |
| 4682 | } |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4683 | |
Stephen M. Cameron | ec52d5f | 2011-05-03 14:54:02 -0500 | [diff] [blame] | 4684 | /* if controller is soft- but not hard resettable... */ |
| 4685 | if (!ctlr_is_hard_resettable(board_id)) |
| 4686 | return -ENOTSUPP; /* try soft reset later. */ |
| 4687 | |
Stephen M. Cameron | f442e64 | 2010-10-22 14:21:12 -0500 | [diff] [blame] | 4688 | /* Save the PCI command register */ |
| 4689 | pci_read_config_word(pdev, 4, &command_register); |
| 4690 | /* Turn the board off. This is so that later pci_restore_state() |
| 4691 | * won't turn the board on before the rest of config space is ready. |
| 4692 | */ |
| 4693 | pci_disable_device(pdev); |
| 4694 | pci_save_state(pdev); |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4695 | |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4696 | /* find the first memory BAR, so we can find the cfg table */ |
| 4697 | rc = cciss_pci_find_memory_BAR(pdev, &paddr); |
| 4698 | if (rc) |
| 4699 | return rc; |
| 4700 | vaddr = remap_pci_mem(paddr, 0x250); |
| 4701 | if (!vaddr) |
| 4702 | return -ENOMEM; |
| 4703 | |
| 4704 | /* find cfgtable in order to check if reset via doorbell is supported */ |
| 4705 | rc = cciss_find_cfg_addrs(pdev, vaddr, &cfg_base_addr, |
| 4706 | &cfg_base_addr_index, &cfg_offset); |
| 4707 | if (rc) |
| 4708 | goto unmap_vaddr; |
| 4709 | cfgtable = remap_pci_mem(pci_resource_start(pdev, |
| 4710 | cfg_base_addr_index) + cfg_offset, sizeof(*cfgtable)); |
| 4711 | if (!cfgtable) { |
| 4712 | rc = -ENOMEM; |
| 4713 | goto unmap_vaddr; |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4714 | } |
Stephen M. Cameron | 62710ae | 2011-05-03 14:53:00 -0500 | [diff] [blame] | 4715 | rc = write_driver_ver_to_cfgtable(cfgtable); |
| 4716 | if (rc) |
| 4717 | goto unmap_vaddr; |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4718 | |
Stephen M. Cameron | bf2e2e6 | 2011-05-03 14:53:46 -0500 | [diff] [blame] | 4719 | /* If reset via doorbell register is supported, use that. |
| 4720 | * There are two such methods. Favor the newest method. |
Stephen M. Cameron | 75230ff | 2010-08-23 11:02:17 +0200 | [diff] [blame] | 4721 | */ |
Stephen M. Cameron | bf2e2e6 | 2011-05-03 14:53:46 -0500 | [diff] [blame] | 4722 | misc_fw_support = readl(&cfgtable->misc_fw_support); |
| 4723 | use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET2; |
| 4724 | if (use_doorbell) { |
| 4725 | use_doorbell = DOORBELL_CTLR_RESET2; |
| 4726 | } else { |
| 4727 | use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET; |
Stephen M. Cameron | 063d2cf | 2011-05-03 14:54:07 -0500 | [diff] [blame] | 4728 | if (use_doorbell) { |
| 4729 | dev_warn(&pdev->dev, "Controller claims that " |
| 4730 | "'Bit 2 doorbell reset' is " |
| 4731 | "supported, but not 'bit 5 doorbell reset'. " |
| 4732 | "Firmware update is recommended.\n"); |
| 4733 | rc = -ENOTSUPP; /* use the soft reset */ |
| 4734 | goto unmap_cfgtable; |
| 4735 | } |
Stephen M. Cameron | bf2e2e6 | 2011-05-03 14:53:46 -0500 | [diff] [blame] | 4736 | } |
Stephen M. Cameron | 75230ff | 2010-08-23 11:02:17 +0200 | [diff] [blame] | 4737 | |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4738 | rc = cciss_controller_hard_reset(pdev, vaddr, use_doorbell); |
| 4739 | if (rc) |
| 4740 | goto unmap_cfgtable; |
Stephen M. Cameron | f442e64 | 2010-10-22 14:21:12 -0500 | [diff] [blame] | 4741 | pci_restore_state(pdev); |
| 4742 | rc = pci_enable_device(pdev); |
| 4743 | if (rc) { |
| 4744 | dev_warn(&pdev->dev, "failed to enable device.\n"); |
| 4745 | goto unmap_cfgtable; |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4746 | } |
Stephen M. Cameron | f442e64 | 2010-10-22 14:21:12 -0500 | [diff] [blame] | 4747 | pci_write_config_word(pdev, 4, command_register); |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4748 | |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4749 | /* Some devices (notably the HP Smart Array 5i Controller) |
| 4750 | need a little pause here */ |
| 4751 | msleep(CCISS_POST_RESET_PAUSE_MSECS); |
| 4752 | |
Stephen M. Cameron | afa842f | 2010-10-22 14:21:07 -0500 | [diff] [blame] | 4753 | /* Wait for board to become not ready, then ready. */ |
Stephen M. Cameron | 59ec86b | 2011-05-03 14:53:36 -0500 | [diff] [blame] | 4754 | dev_info(&pdev->dev, "Waiting for board to reset.\n"); |
Stephen M. Cameron | afa842f | 2010-10-22 14:21:07 -0500 | [diff] [blame] | 4755 | rc = cciss_wait_for_board_state(pdev, vaddr, BOARD_NOT_READY); |
Stephen M. Cameron | 5afe278 | 2011-05-03 14:53:52 -0500 | [diff] [blame] | 4756 | if (rc) { |
| 4757 | dev_warn(&pdev->dev, "Failed waiting for board to hard reset." |
| 4758 | " Will try soft reset.\n"); |
| 4759 | rc = -ENOTSUPP; /* Not expected, but try soft reset later */ |
| 4760 | goto unmap_cfgtable; |
| 4761 | } |
Stephen M. Cameron | afa842f | 2010-10-22 14:21:07 -0500 | [diff] [blame] | 4762 | rc = cciss_wait_for_board_state(pdev, vaddr, BOARD_READY); |
| 4763 | if (rc) { |
| 4764 | dev_warn(&pdev->dev, |
Stephen M. Cameron | 5afe278 | 2011-05-03 14:53:52 -0500 | [diff] [blame] | 4765 | "failed waiting for board to become ready " |
| 4766 | "after hard reset\n"); |
Stephen M. Cameron | afa842f | 2010-10-22 14:21:07 -0500 | [diff] [blame] | 4767 | goto unmap_cfgtable; |
| 4768 | } |
Stephen M. Cameron | afa842f | 2010-10-22 14:21:07 -0500 | [diff] [blame] | 4769 | |
Stephen M. Cameron | 62710ae | 2011-05-03 14:53:00 -0500 | [diff] [blame] | 4770 | rc = controller_reset_failed(vaddr); |
| 4771 | if (rc < 0) |
| 4772 | goto unmap_cfgtable; |
| 4773 | if (rc) { |
Stephen M. Cameron | 5afe278 | 2011-05-03 14:53:52 -0500 | [diff] [blame] | 4774 | dev_warn(&pdev->dev, "Unable to successfully hard reset " |
| 4775 | "controller. Will try soft reset.\n"); |
| 4776 | rc = -ENOTSUPP; /* Not expected, but try soft reset later */ |
Stephen M. Cameron | 62710ae | 2011-05-03 14:53:00 -0500 | [diff] [blame] | 4777 | } else { |
Stephen M. Cameron | 5afe278 | 2011-05-03 14:53:52 -0500 | [diff] [blame] | 4778 | dev_info(&pdev->dev, "Board ready after hard reset.\n"); |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4779 | } |
| 4780 | |
| 4781 | unmap_cfgtable: |
| 4782 | iounmap(cfgtable); |
| 4783 | |
| 4784 | unmap_vaddr: |
| 4785 | iounmap(vaddr); |
| 4786 | return rc; |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4787 | } |
| 4788 | |
Greg Kroah-Hartman | 8d85fce | 2012-12-21 15:13:49 -0800 | [diff] [blame] | 4789 | static int cciss_init_reset_devices(struct pci_dev *pdev) |
Stephen M. Cameron | 83123cb | 2010-07-19 13:46:17 -0500 | [diff] [blame] | 4790 | { |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4791 | int rc, i; |
Stephen M. Cameron | 83123cb | 2010-07-19 13:46:17 -0500 | [diff] [blame] | 4792 | |
| 4793 | if (!reset_devices) |
| 4794 | return 0; |
| 4795 | |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4796 | /* Reset the controller with a PCI power-cycle or via doorbell */ |
| 4797 | rc = cciss_kdump_hard_reset_controller(pdev); |
Stephen M. Cameron | 83123cb | 2010-07-19 13:46:17 -0500 | [diff] [blame] | 4798 | |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4799 | /* -ENOTSUPP here means we cannot reset the controller |
| 4800 | * but it's already (and still) up and running in |
Stephen M. Cameron | 058a0f9 | 2010-07-19 13:46:33 -0500 | [diff] [blame] | 4801 | * "performant mode". Or, it might be 640x, which can't reset |
| 4802 | * due to concerns about shared bbwc between 6402/6404 pair. |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4803 | */ |
| 4804 | if (rc == -ENOTSUPP) |
Stephen M. Cameron | 5afe278 | 2011-05-03 14:53:52 -0500 | [diff] [blame] | 4805 | return rc; /* just try to do the kdump anyhow. */ |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4806 | if (rc) |
| 4807 | return -ENODEV; |
Stephen M. Cameron | 83123cb | 2010-07-19 13:46:17 -0500 | [diff] [blame] | 4808 | |
| 4809 | /* Now try to get the controller to respond to a no-op */ |
Stephen M. Cameron | 59ec86b | 2011-05-03 14:53:36 -0500 | [diff] [blame] | 4810 | dev_warn(&pdev->dev, "Waiting for controller to respond to no-op\n"); |
Stephen M. Cameron | 83123cb | 2010-07-19 13:46:17 -0500 | [diff] [blame] | 4811 | for (i = 0; i < CCISS_POST_RESET_NOOP_RETRIES; i++) { |
| 4812 | if (cciss_noop(pdev) == 0) |
| 4813 | break; |
| 4814 | else |
| 4815 | dev_warn(&pdev->dev, "no-op failed%s\n", |
| 4816 | (i < CCISS_POST_RESET_NOOP_RETRIES - 1 ? |
| 4817 | "; re-trying" : "")); |
| 4818 | msleep(CCISS_POST_RESET_NOOP_INTERVAL_MSECS); |
| 4819 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4820 | return 0; |
| 4821 | } |
| 4822 | |
Greg Kroah-Hartman | 8d85fce | 2012-12-21 15:13:49 -0800 | [diff] [blame] | 4823 | static int cciss_allocate_cmd_pool(ctlr_info_t *h) |
Stephen M. Cameron | 54dae34 | 2011-05-03 14:53:05 -0500 | [diff] [blame] | 4824 | { |
Akinobu Mita | 1f118bc | 2012-11-08 16:12:22 -0800 | [diff] [blame] | 4825 | h->cmd_pool_bits = kmalloc(BITS_TO_LONGS(h->nr_cmds) * |
Stephen M. Cameron | 54dae34 | 2011-05-03 14:53:05 -0500 | [diff] [blame] | 4826 | sizeof(unsigned long), GFP_KERNEL); |
| 4827 | h->cmd_pool = pci_alloc_consistent(h->pdev, |
| 4828 | h->nr_cmds * sizeof(CommandList_struct), |
| 4829 | &(h->cmd_pool_dhandle)); |
| 4830 | h->errinfo_pool = pci_alloc_consistent(h->pdev, |
| 4831 | h->nr_cmds * sizeof(ErrorInfo_struct), |
| 4832 | &(h->errinfo_pool_dhandle)); |
| 4833 | if ((h->cmd_pool_bits == NULL) |
| 4834 | || (h->cmd_pool == NULL) |
| 4835 | || (h->errinfo_pool == NULL)) { |
| 4836 | dev_err(&h->pdev->dev, "out of memory"); |
| 4837 | return -ENOMEM; |
| 4838 | } |
| 4839 | return 0; |
| 4840 | } |
| 4841 | |
Greg Kroah-Hartman | 8d85fce | 2012-12-21 15:13:49 -0800 | [diff] [blame] | 4842 | static int cciss_allocate_scatterlists(ctlr_info_t *h) |
Stephen M. Cameron | abf7966 | 2011-05-03 14:53:10 -0500 | [diff] [blame] | 4843 | { |
| 4844 | int i; |
| 4845 | |
| 4846 | /* zero it, so that on free we need not know how many were alloc'ed */ |
| 4847 | h->scatter_list = kzalloc(h->max_commands * |
| 4848 | sizeof(struct scatterlist *), GFP_KERNEL); |
| 4849 | if (!h->scatter_list) |
| 4850 | return -ENOMEM; |
| 4851 | |
| 4852 | for (i = 0; i < h->nr_cmds; i++) { |
| 4853 | h->scatter_list[i] = kmalloc(sizeof(struct scatterlist) * |
| 4854 | h->maxsgentries, GFP_KERNEL); |
| 4855 | if (h->scatter_list[i] == NULL) { |
| 4856 | dev_err(&h->pdev->dev, "could not allocate " |
| 4857 | "s/g lists\n"); |
| 4858 | return -ENOMEM; |
| 4859 | } |
| 4860 | } |
| 4861 | return 0; |
| 4862 | } |
| 4863 | |
| 4864 | static void cciss_free_scatterlists(ctlr_info_t *h) |
| 4865 | { |
| 4866 | int i; |
| 4867 | |
| 4868 | if (h->scatter_list) { |
| 4869 | for (i = 0; i < h->nr_cmds; i++) |
| 4870 | kfree(h->scatter_list[i]); |
| 4871 | kfree(h->scatter_list); |
| 4872 | } |
| 4873 | } |
| 4874 | |
Stephen M. Cameron | 54dae34 | 2011-05-03 14:53:05 -0500 | [diff] [blame] | 4875 | static void cciss_free_cmd_pool(ctlr_info_t *h) |
| 4876 | { |
| 4877 | kfree(h->cmd_pool_bits); |
| 4878 | if (h->cmd_pool) |
| 4879 | pci_free_consistent(h->pdev, |
| 4880 | h->nr_cmds * sizeof(CommandList_struct), |
| 4881 | h->cmd_pool, h->cmd_pool_dhandle); |
| 4882 | if (h->errinfo_pool) |
| 4883 | pci_free_consistent(h->pdev, |
| 4884 | h->nr_cmds * sizeof(ErrorInfo_struct), |
| 4885 | h->errinfo_pool, h->errinfo_pool_dhandle); |
| 4886 | } |
| 4887 | |
Stephen M. Cameron | 2b48085 | 2011-05-03 14:53:16 -0500 | [diff] [blame] | 4888 | static int cciss_request_irq(ctlr_info_t *h, |
| 4889 | irqreturn_t (*msixhandler)(int, void *), |
| 4890 | irqreturn_t (*intxhandler)(int, void *)) |
| 4891 | { |
| 4892 | if (h->msix_vector || h->msi_vector) { |
Joseph Handzik | 1304953 | 2011-08-08 11:40:15 +0200 | [diff] [blame] | 4893 | if (!request_irq(h->intr[h->intr_mode], msixhandler, |
Stephen M. Cameron | 6225da4 | 2011-11-28 20:12:05 +0100 | [diff] [blame] | 4894 | 0, h->devname, h)) |
Stephen M. Cameron | 2b48085 | 2011-05-03 14:53:16 -0500 | [diff] [blame] | 4895 | return 0; |
| 4896 | dev_err(&h->pdev->dev, "Unable to get msi irq %d" |
Joseph Handzik | 1304953 | 2011-08-08 11:40:15 +0200 | [diff] [blame] | 4897 | " for %s\n", h->intr[h->intr_mode], |
Stephen M. Cameron | 2b48085 | 2011-05-03 14:53:16 -0500 | [diff] [blame] | 4898 | h->devname); |
| 4899 | return -1; |
| 4900 | } |
| 4901 | |
Joseph Handzik | 1304953 | 2011-08-08 11:40:15 +0200 | [diff] [blame] | 4902 | if (!request_irq(h->intr[h->intr_mode], intxhandler, |
Stephen M. Cameron | 6225da4 | 2011-11-28 20:12:05 +0100 | [diff] [blame] | 4903 | IRQF_SHARED, h->devname, h)) |
Stephen M. Cameron | 2b48085 | 2011-05-03 14:53:16 -0500 | [diff] [blame] | 4904 | return 0; |
| 4905 | dev_err(&h->pdev->dev, "Unable to get irq %d for %s\n", |
Joseph Handzik | 1304953 | 2011-08-08 11:40:15 +0200 | [diff] [blame] | 4906 | h->intr[h->intr_mode], h->devname); |
Stephen M. Cameron | 2b48085 | 2011-05-03 14:53:16 -0500 | [diff] [blame] | 4907 | return -1; |
| 4908 | } |
| 4909 | |
Greg Kroah-Hartman | 8d85fce | 2012-12-21 15:13:49 -0800 | [diff] [blame] | 4910 | static int cciss_kdump_soft_reset(ctlr_info_t *h) |
Stephen M. Cameron | 5afe278 | 2011-05-03 14:53:52 -0500 | [diff] [blame] | 4911 | { |
| 4912 | if (cciss_send_reset(h, CTLR_LUNID, CCISS_RESET_TYPE_CONTROLLER)) { |
| 4913 | dev_warn(&h->pdev->dev, "Resetting array controller failed.\n"); |
| 4914 | return -EIO; |
| 4915 | } |
| 4916 | |
| 4917 | dev_info(&h->pdev->dev, "Waiting for board to soft reset.\n"); |
| 4918 | if (cciss_wait_for_board_state(h->pdev, h->vaddr, BOARD_NOT_READY)) { |
| 4919 | dev_warn(&h->pdev->dev, "Soft reset had no effect.\n"); |
| 4920 | return -1; |
| 4921 | } |
| 4922 | |
| 4923 | dev_info(&h->pdev->dev, "Board reset, awaiting READY status.\n"); |
| 4924 | if (cciss_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY)) { |
| 4925 | dev_warn(&h->pdev->dev, "Board failed to become ready " |
| 4926 | "after soft reset.\n"); |
| 4927 | return -1; |
| 4928 | } |
| 4929 | |
| 4930 | return 0; |
| 4931 | } |
| 4932 | |
| 4933 | static void cciss_undo_allocations_after_kdump_soft_reset(ctlr_info_t *h) |
| 4934 | { |
| 4935 | int ctlr = h->ctlr; |
| 4936 | |
Joseph Handzik | 1304953 | 2011-08-08 11:40:15 +0200 | [diff] [blame] | 4937 | free_irq(h->intr[h->intr_mode], h); |
Stephen M. Cameron | 5afe278 | 2011-05-03 14:53:52 -0500 | [diff] [blame] | 4938 | #ifdef CONFIG_PCI_MSI |
| 4939 | if (h->msix_vector) |
| 4940 | pci_disable_msix(h->pdev); |
| 4941 | else if (h->msi_vector) |
| 4942 | pci_disable_msi(h->pdev); |
| 4943 | #endif /* CONFIG_PCI_MSI */ |
| 4944 | cciss_free_sg_chain_blocks(h->cmd_sg_list, h->nr_cmds); |
| 4945 | cciss_free_scatterlists(h); |
| 4946 | cciss_free_cmd_pool(h); |
| 4947 | kfree(h->blockFetchTable); |
| 4948 | if (h->reply_pool) |
| 4949 | pci_free_consistent(h->pdev, h->max_commands * sizeof(__u64), |
| 4950 | h->reply_pool, h->reply_pool_dhandle); |
| 4951 | if (h->transtable) |
| 4952 | iounmap(h->transtable); |
| 4953 | if (h->cfgtable) |
| 4954 | iounmap(h->cfgtable); |
| 4955 | if (h->vaddr) |
| 4956 | iounmap(h->vaddr); |
| 4957 | unregister_blkdev(h->major, h->devname); |
| 4958 | cciss_destroy_hba_sysfs_entry(h); |
| 4959 | pci_release_regions(h->pdev); |
| 4960 | kfree(h); |
| 4961 | hba[ctlr] = NULL; |
| 4962 | } |
| 4963 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4964 | /* |
| 4965 | * This is it. Find all the controllers and register them. I really hate |
| 4966 | * stealing all these major device numbers. |
| 4967 | * returns the number of block devices registered. |
| 4968 | */ |
Greg Kroah-Hartman | 8d85fce | 2012-12-21 15:13:49 -0800 | [diff] [blame] | 4969 | static int cciss_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4970 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4971 | int i; |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 4972 | int j = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4973 | int rc; |
Stephen M. Cameron | 5afe278 | 2011-05-03 14:53:52 -0500 | [diff] [blame] | 4974 | int try_soft_reset = 0; |
Mike Miller | 22bece0 | 2008-11-06 12:53:25 -0800 | [diff] [blame] | 4975 | int dac, return_code; |
Eric Dumazet | 212a502 | 2009-08-24 10:01:53 +0200 | [diff] [blame] | 4976 | InquiryData_struct *inq_buff; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4977 | ctlr_info_t *h; |
Stephen M. Cameron | 5afe278 | 2011-05-03 14:53:52 -0500 | [diff] [blame] | 4978 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4979 | |
Mike Miller | 0821e90 | 2013-04-29 11:55:54 -0700 | [diff] [blame] | 4980 | /* |
| 4981 | * By default the cciss driver is used for all older HP Smart Array |
| 4982 | * controllers. There are module paramaters that allow a user to |
| 4983 | * override this behavior and instead use the hpsa SCSI driver. If |
| 4984 | * this is the case cciss may be loaded first from the kdump initrd |
| 4985 | * image and cause a kernel panic. So if reset_devices is true and |
| 4986 | * cciss_allow_hpsa is set just bail. |
| 4987 | */ |
| 4988 | if ((reset_devices) && (cciss_allow_hpsa == 1)) |
| 4989 | return -ENODEV; |
Stephen M. Cameron | 83123cb | 2010-07-19 13:46:17 -0500 | [diff] [blame] | 4990 | rc = cciss_init_reset_devices(pdev); |
Stephen M. Cameron | 5afe278 | 2011-05-03 14:53:52 -0500 | [diff] [blame] | 4991 | if (rc) { |
| 4992 | if (rc != -ENOTSUPP) |
| 4993 | return rc; |
| 4994 | /* If the reset fails in a particular way (it has no way to do |
| 4995 | * a proper hard reset, so returns -ENOTSUPP) we can try to do |
| 4996 | * a soft reset once we get the controller configured up to the |
| 4997 | * point that it can accept a command. |
| 4998 | */ |
| 4999 | try_soft_reset = 1; |
| 5000 | rc = 0; |
| 5001 | } |
| 5002 | |
| 5003 | reinit_after_soft_reset: |
| 5004 | |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 5005 | i = alloc_cciss_hba(pdev); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 5006 | if (i < 0) |
Andrew Morton | 4336548 | 2014-01-21 14:39:23 -0800 | [diff] [blame] | 5007 | return -ENOMEM; |
Mike Miller | 1f8ef38 | 2005-09-13 01:25:21 -0700 | [diff] [blame] | 5008 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5009 | h = hba[i]; |
| 5010 | h->pdev = pdev; |
| 5011 | h->busy_initializing = 1; |
Joseph Handzik | 1304953 | 2011-08-08 11:40:15 +0200 | [diff] [blame] | 5012 | h->intr_mode = cciss_simple_mode ? SIMPLE_MODE_INT : PERF_MODE_INT; |
Jens Axboe | e6e1ee9 | 2011-01-10 21:50:33 +0100 | [diff] [blame] | 5013 | INIT_LIST_HEAD(&h->cmpQ); |
| 5014 | INIT_LIST_HEAD(&h->reqQ); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5015 | mutex_init(&h->busy_shutting_down); |
Mike Miller | 1f8ef38 | 2005-09-13 01:25:21 -0700 | [diff] [blame] | 5016 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5017 | if (cciss_pci_init(h) != 0) |
Stephen M. Cameron | 2cfa948 | 2009-10-13 09:18:22 +0200 | [diff] [blame] | 5018 | goto clean_no_release_regions; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5019 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5020 | sprintf(h->devname, "cciss%d", i); |
| 5021 | h->ctlr = i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5022 | |
Stephen M. Cameron | 8a4ec67 | 2011-05-03 14:54:12 -0500 | [diff] [blame] | 5023 | if (cciss_tape_cmds < 2) |
| 5024 | cciss_tape_cmds = 2; |
| 5025 | if (cciss_tape_cmds > 16) |
| 5026 | cciss_tape_cmds = 16; |
| 5027 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5028 | init_completion(&h->scan_wait); |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 5029 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5030 | if (cciss_create_hba_sysfs_entry(h)) |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 5031 | goto clean0; |
| 5032 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5033 | /* configure PCI DMA stuff */ |
Yang Hongyang | 6a35528 | 2009-04-06 19:01:13 -0700 | [diff] [blame] | 5034 | if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) |
Bjorn Helgaas | 40aabb5 | 2006-06-25 05:49:03 -0700 | [diff] [blame] | 5035 | dac = 1; |
Yang Hongyang | 284901a | 2009-04-06 19:01:15 -0700 | [diff] [blame] | 5036 | else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) |
Bjorn Helgaas | 40aabb5 | 2006-06-25 05:49:03 -0700 | [diff] [blame] | 5037 | dac = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5038 | else { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 5039 | dev_err(&h->pdev->dev, "no suitable DMA available\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5040 | goto clean1; |
| 5041 | } |
| 5042 | |
| 5043 | /* |
| 5044 | * register with the major number, or get a dynamic major number |
| 5045 | * by passing 0 as argument. This is done for greater than |
| 5046 | * 8 controller support. |
| 5047 | */ |
| 5048 | if (i < MAX_CTLR_ORIG) |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5049 | h->major = COMPAQ_CISS_MAJOR + i; |
| 5050 | rc = register_blkdev(h->major, h->devname); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 5051 | if (rc == -EBUSY || rc == -EINVAL) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 5052 | dev_err(&h->pdev->dev, |
| 5053 | "Unable to get major number %d for %s " |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5054 | "on hba %d\n", h->major, h->devname, i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5055 | goto clean1; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 5056 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5057 | if (i >= MAX_CTLR_ORIG) |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5058 | h->major = rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5059 | } |
| 5060 | |
| 5061 | /* make sure the board interrupts are off */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5062 | h->access.set_intr_mask(h, CCISS_INTR_OFF); |
Stephen M. Cameron | 2b48085 | 2011-05-03 14:53:16 -0500 | [diff] [blame] | 5063 | rc = cciss_request_irq(h, do_cciss_msix_intr, do_cciss_intx); |
| 5064 | if (rc) |
| 5065 | goto clean2; |
Bjorn Helgaas | 40aabb5 | 2006-06-25 05:49:03 -0700 | [diff] [blame] | 5066 | |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 5067 | dev_info(&h->pdev->dev, "%s: <0x%x> at PCI %s IRQ %d%s using DAC\n", |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5068 | h->devname, pdev->device, pci_name(pdev), |
Joseph Handzik | 1304953 | 2011-08-08 11:40:15 +0200 | [diff] [blame] | 5069 | h->intr[h->intr_mode], dac ? "" : " not"); |
Bjorn Helgaas | 40aabb5 | 2006-06-25 05:49:03 -0700 | [diff] [blame] | 5070 | |
Stephen M. Cameron | 54dae34 | 2011-05-03 14:53:05 -0500 | [diff] [blame] | 5071 | if (cciss_allocate_cmd_pool(h)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5072 | goto clean4; |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 5073 | |
Stephen M. Cameron | abf7966 | 2011-05-03 14:53:10 -0500 | [diff] [blame] | 5074 | if (cciss_allocate_scatterlists(h)) |
Dan Carpenter | 4ee69851 | 2010-08-23 12:28:15 +0200 | [diff] [blame] | 5075 | goto clean4; |
| 5076 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5077 | h->cmd_sg_list = cciss_allocate_sg_chain_blocks(h, |
| 5078 | h->chainsize, h->nr_cmds); |
| 5079 | if (!h->cmd_sg_list && h->chainsize > 0) |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 5080 | goto clean4; |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 5081 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5082 | spin_lock_init(&h->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5083 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 5084 | /* Initialize the pdev driver private data. |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5085 | have it point to h. */ |
| 5086 | pci_set_drvdata(pdev, h); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 5087 | /* command and error info recs zeroed out before |
| 5088 | they are used */ |
Akinobu Mita | 1f118bc | 2012-11-08 16:12:22 -0800 | [diff] [blame] | 5089 | bitmap_zero(h->cmd_pool_bits, h->nr_cmds); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5090 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5091 | h->num_luns = 0; |
| 5092 | h->highest_lun = -1; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 5093 | for (j = 0; j < CISS_MAX_LUN; j++) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5094 | h->drv[j] = NULL; |
| 5095 | h->gendisk[j] = NULL; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 5096 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5097 | |
Stephen M. Cameron | 5afe278 | 2011-05-03 14:53:52 -0500 | [diff] [blame] | 5098 | /* At this point, the controller is ready to take commands. |
| 5099 | * Now, if reset_devices and the hard reset didn't work, try |
| 5100 | * the soft reset and see if that works. |
| 5101 | */ |
| 5102 | if (try_soft_reset) { |
| 5103 | |
| 5104 | /* This is kind of gross. We may or may not get a completion |
| 5105 | * from the soft reset command, and if we do, then the value |
| 5106 | * from the fifo may or may not be valid. So, we wait 10 secs |
| 5107 | * after the reset throwing away any completions we get during |
| 5108 | * that time. Unregister the interrupt handler and register |
| 5109 | * fake ones to scoop up any residual completions. |
| 5110 | */ |
| 5111 | spin_lock_irqsave(&h->lock, flags); |
| 5112 | h->access.set_intr_mask(h, CCISS_INTR_OFF); |
| 5113 | spin_unlock_irqrestore(&h->lock, flags); |
Joseph Handzik | 1304953 | 2011-08-08 11:40:15 +0200 | [diff] [blame] | 5114 | free_irq(h->intr[h->intr_mode], h); |
Stephen M. Cameron | 5afe278 | 2011-05-03 14:53:52 -0500 | [diff] [blame] | 5115 | rc = cciss_request_irq(h, cciss_msix_discard_completions, |
| 5116 | cciss_intx_discard_completions); |
| 5117 | if (rc) { |
| 5118 | dev_warn(&h->pdev->dev, "Failed to request_irq after " |
| 5119 | "soft reset.\n"); |
| 5120 | goto clean4; |
| 5121 | } |
| 5122 | |
| 5123 | rc = cciss_kdump_soft_reset(h); |
| 5124 | if (rc) { |
| 5125 | dev_warn(&h->pdev->dev, "Soft reset failed.\n"); |
| 5126 | goto clean4; |
| 5127 | } |
| 5128 | |
| 5129 | dev_info(&h->pdev->dev, "Board READY.\n"); |
| 5130 | dev_info(&h->pdev->dev, |
| 5131 | "Waiting for stale completions to drain.\n"); |
| 5132 | h->access.set_intr_mask(h, CCISS_INTR_ON); |
| 5133 | msleep(10000); |
| 5134 | h->access.set_intr_mask(h, CCISS_INTR_OFF); |
| 5135 | |
| 5136 | rc = controller_reset_failed(h->cfgtable); |
| 5137 | if (rc) |
| 5138 | dev_info(&h->pdev->dev, |
| 5139 | "Soft reset appears to have failed.\n"); |
| 5140 | |
| 5141 | /* since the controller's reset, we have to go back and re-init |
| 5142 | * everything. Easiest to just forget what we've done and do it |
| 5143 | * all over again. |
| 5144 | */ |
| 5145 | cciss_undo_allocations_after_kdump_soft_reset(h); |
| 5146 | try_soft_reset = 0; |
| 5147 | if (rc) |
| 5148 | /* don't go to clean4, we already unallocated */ |
| 5149 | return -ENODEV; |
| 5150 | |
| 5151 | goto reinit_after_soft_reset; |
| 5152 | } |
| 5153 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5154 | cciss_scsi_setup(h); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5155 | |
| 5156 | /* Turn the interrupts on so we can service requests */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5157 | h->access.set_intr_mask(h, CCISS_INTR_ON); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5158 | |
Mike Miller | 22bece0 | 2008-11-06 12:53:25 -0800 | [diff] [blame] | 5159 | /* Get the firmware version */ |
| 5160 | inq_buff = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
| 5161 | if (inq_buff == NULL) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 5162 | dev_err(&h->pdev->dev, "out of memory\n"); |
Mike Miller | 22bece0 | 2008-11-06 12:53:25 -0800 | [diff] [blame] | 5163 | goto clean4; |
| 5164 | } |
| 5165 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5166 | return_code = sendcmd_withirq(h, CISS_INQUIRY, inq_buff, |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 5167 | sizeof(InquiryData_struct), 0, CTLR_LUNID, TYPE_CMD); |
Mike Miller | 22bece0 | 2008-11-06 12:53:25 -0800 | [diff] [blame] | 5168 | if (return_code == IO_OK) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5169 | h->firm_ver[0] = inq_buff->data_byte[32]; |
| 5170 | h->firm_ver[1] = inq_buff->data_byte[33]; |
| 5171 | h->firm_ver[2] = inq_buff->data_byte[34]; |
| 5172 | h->firm_ver[3] = inq_buff->data_byte[35]; |
Mike Miller | 22bece0 | 2008-11-06 12:53:25 -0800 | [diff] [blame] | 5173 | } else { /* send command failed */ |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 5174 | dev_warn(&h->pdev->dev, "unable to determine firmware" |
Mike Miller | 22bece0 | 2008-11-06 12:53:25 -0800 | [diff] [blame] | 5175 | " version of controller\n"); |
| 5176 | } |
Eric Dumazet | 212a502 | 2009-08-24 10:01:53 +0200 | [diff] [blame] | 5177 | kfree(inq_buff); |
Mike Miller | 22bece0 | 2008-11-06 12:53:25 -0800 | [diff] [blame] | 5178 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5179 | cciss_procinit(h); |
Mike Miller | 92c4231a | 2006-12-06 20:35:06 -0800 | [diff] [blame] | 5180 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5181 | h->cciss_max_sectors = 8192; |
Mike Miller | 92c4231a | 2006-12-06 20:35:06 -0800 | [diff] [blame] | 5182 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5183 | rebuild_lun_table(h, 1, 0); |
Stephen M. Cameron | 0007a4c | 2011-11-16 09:21:49 +0100 | [diff] [blame] | 5184 | cciss_engage_scsi(h); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5185 | h->busy_initializing = 0; |
Stephen M. Cameron | b88fac6 | 2013-10-29 13:46:06 -0600 | [diff] [blame] | 5186 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5187 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 5188 | clean4: |
Stephen M. Cameron | 54dae34 | 2011-05-03 14:53:05 -0500 | [diff] [blame] | 5189 | cciss_free_cmd_pool(h); |
Stephen M. Cameron | abf7966 | 2011-05-03 14:53:10 -0500 | [diff] [blame] | 5190 | cciss_free_scatterlists(h); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5191 | cciss_free_sg_chain_blocks(h->cmd_sg_list, h->nr_cmds); |
Joseph Handzik | 1304953 | 2011-08-08 11:40:15 +0200 | [diff] [blame] | 5192 | free_irq(h->intr[h->intr_mode], h); |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 5193 | clean2: |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5194 | unregister_blkdev(h->major, h->devname); |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 5195 | clean1: |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5196 | cciss_destroy_hba_sysfs_entry(h); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 5197 | clean0: |
Stephen M. Cameron | 2cfa948 | 2009-10-13 09:18:22 +0200 | [diff] [blame] | 5198 | pci_release_regions(pdev); |
| 5199 | clean_no_release_regions: |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5200 | h->busy_initializing = 0; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 5201 | |
Mike Miller | 872225c | 2006-12-13 00:34:22 -0800 | [diff] [blame] | 5202 | /* |
| 5203 | * Deliberately omit pci_disable_device(): it does something nasty to |
| 5204 | * Smart Array controllers that pci_enable_device does not undo |
| 5205 | */ |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 5206 | pci_set_drvdata(pdev, NULL); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5207 | free_hba(h); |
Andrew Morton | 4336548 | 2014-01-21 14:39:23 -0800 | [diff] [blame] | 5208 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5209 | } |
| 5210 | |
Gerald Britton | e9ca75b | 2007-05-14 13:53:01 -0400 | [diff] [blame] | 5211 | static void cciss_shutdown(struct pci_dev *pdev) |
| 5212 | { |
Stephen M. Cameron | 29009a0 | 2009-11-12 12:49:35 -0600 | [diff] [blame] | 5213 | ctlr_info_t *h; |
| 5214 | char *flush_buf; |
Gerald Britton | e9ca75b | 2007-05-14 13:53:01 -0400 | [diff] [blame] | 5215 | int return_code; |
| 5216 | |
Stephen M. Cameron | 29009a0 | 2009-11-12 12:49:35 -0600 | [diff] [blame] | 5217 | h = pci_get_drvdata(pdev); |
| 5218 | flush_buf = kzalloc(4, GFP_KERNEL); |
| 5219 | if (!flush_buf) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 5220 | dev_warn(&h->pdev->dev, "cache not flushed, out of memory.\n"); |
Gerald Britton | e9ca75b | 2007-05-14 13:53:01 -0400 | [diff] [blame] | 5221 | return; |
Gerald Britton | e9ca75b | 2007-05-14 13:53:01 -0400 | [diff] [blame] | 5222 | } |
Stephen M. Cameron | 29009a0 | 2009-11-12 12:49:35 -0600 | [diff] [blame] | 5223 | /* write all data in the battery backed cache to disk */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5224 | return_code = sendcmd_withirq(h, CCISS_CACHE_FLUSH, flush_buf, |
Stephen M. Cameron | 29009a0 | 2009-11-12 12:49:35 -0600 | [diff] [blame] | 5225 | 4, 0, CTLR_LUNID, TYPE_CMD); |
| 5226 | kfree(flush_buf); |
| 5227 | if (return_code != IO_OK) |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 5228 | dev_warn(&h->pdev->dev, "Error flushing cache\n"); |
Stephen M. Cameron | 29009a0 | 2009-11-12 12:49:35 -0600 | [diff] [blame] | 5229 | h->access.set_intr_mask(h, CCISS_INTR_OFF); |
Joseph Handzik | 1304953 | 2011-08-08 11:40:15 +0200 | [diff] [blame] | 5230 | free_irq(h->intr[h->intr_mode], h); |
Gerald Britton | e9ca75b | 2007-05-14 13:53:01 -0400 | [diff] [blame] | 5231 | } |
| 5232 | |
Greg Kroah-Hartman | 8d85fce | 2012-12-21 15:13:49 -0800 | [diff] [blame] | 5233 | static int cciss_enter_simple_mode(struct ctlr_info *h) |
Joseph Handzik | 1304953 | 2011-08-08 11:40:15 +0200 | [diff] [blame] | 5234 | { |
| 5235 | u32 trans_support; |
| 5236 | |
| 5237 | trans_support = readl(&(h->cfgtable->TransportSupport)); |
| 5238 | if (!(trans_support & SIMPLE_MODE)) |
| 5239 | return -ENOTSUPP; |
| 5240 | |
| 5241 | h->max_commands = readl(&(h->cfgtable->CmdsOutMax)); |
| 5242 | writel(CFGTBL_Trans_Simple, &(h->cfgtable->HostWrite.TransportRequest)); |
| 5243 | writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); |
| 5244 | cciss_wait_for_mode_change_ack(h); |
| 5245 | print_cfg_table(h); |
| 5246 | if (!(readl(&(h->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) { |
| 5247 | dev_warn(&h->pdev->dev, "unable to get board into simple mode\n"); |
| 5248 | return -ENODEV; |
| 5249 | } |
| 5250 | h->transMethod = CFGTBL_Trans_Simple; |
| 5251 | return 0; |
| 5252 | } |
| 5253 | |
| 5254 | |
Greg Kroah-Hartman | 8d85fce | 2012-12-21 15:13:49 -0800 | [diff] [blame] | 5255 | static void cciss_remove_one(struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5256 | { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5257 | ctlr_info_t *h; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5258 | int i, j; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5259 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 5260 | if (pci_get_drvdata(pdev) == NULL) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 5261 | dev_err(&pdev->dev, "Unable to remove device\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5262 | return; |
| 5263 | } |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 5264 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5265 | h = pci_get_drvdata(pdev); |
| 5266 | i = h->ctlr; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 5267 | if (hba[i] == NULL) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 5268 | dev_err(&pdev->dev, "device appears to already be removed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5269 | return; |
| 5270 | } |
Bjorn Helgaas | b655077 | 2007-04-11 23:28:43 -0700 | [diff] [blame] | 5271 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5272 | mutex_lock(&h->busy_shutting_down); |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 5273 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5274 | remove_from_scan_list(h); |
| 5275 | remove_proc_entry(h->devname, proc_cciss); |
| 5276 | unregister_blkdev(h->major, h->devname); |
Bjorn Helgaas | b655077 | 2007-04-11 23:28:43 -0700 | [diff] [blame] | 5277 | |
| 5278 | /* remove it from the disk list */ |
| 5279 | for (j = 0; j < CISS_MAX_LUN; j++) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5280 | struct gendisk *disk = h->gendisk[j]; |
Bjorn Helgaas | b655077 | 2007-04-11 23:28:43 -0700 | [diff] [blame] | 5281 | if (disk) { |
Jens Axboe | 165125e | 2007-07-24 09:28:11 +0200 | [diff] [blame] | 5282 | struct request_queue *q = disk->queue; |
Bjorn Helgaas | b655077 | 2007-04-11 23:28:43 -0700 | [diff] [blame] | 5283 | |
Stephen M. Cameron | 097d026 | 2009-09-17 13:47:19 -0500 | [diff] [blame] | 5284 | if (disk->flags & GENHD_FL_UP) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5285 | cciss_destroy_ld_sysfs_entry(h, j, 1); |
Bjorn Helgaas | b655077 | 2007-04-11 23:28:43 -0700 | [diff] [blame] | 5286 | del_gendisk(disk); |
Stephen M. Cameron | 097d026 | 2009-09-17 13:47:19 -0500 | [diff] [blame] | 5287 | } |
Bjorn Helgaas | b655077 | 2007-04-11 23:28:43 -0700 | [diff] [blame] | 5288 | if (q) |
| 5289 | blk_cleanup_queue(q); |
| 5290 | } |
| 5291 | } |
| 5292 | |
Mike Miller | ba198ef | 2008-08-04 11:54:55 +0200 | [diff] [blame] | 5293 | #ifdef CONFIG_CISS_SCSI_TAPE |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5294 | cciss_unregister_scsi(h); /* unhook from SCSI subsystem */ |
Mike Miller | ba198ef | 2008-08-04 11:54:55 +0200 | [diff] [blame] | 5295 | #endif |
Bjorn Helgaas | b655077 | 2007-04-11 23:28:43 -0700 | [diff] [blame] | 5296 | |
Gerald Britton | e9ca75b | 2007-05-14 13:53:01 -0400 | [diff] [blame] | 5297 | cciss_shutdown(pdev); |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 5298 | |
| 5299 | #ifdef CONFIG_PCI_MSI |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5300 | if (h->msix_vector) |
| 5301 | pci_disable_msix(h->pdev); |
| 5302 | else if (h->msi_vector) |
| 5303 | pci_disable_msi(h->pdev); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 5304 | #endif /* CONFIG_PCI_MSI */ |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 5305 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5306 | iounmap(h->transtable); |
| 5307 | iounmap(h->cfgtable); |
| 5308 | iounmap(h->vaddr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5309 | |
Stephen M. Cameron | 54dae34 | 2011-05-03 14:53:05 -0500 | [diff] [blame] | 5310 | cciss_free_cmd_pool(h); |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 5311 | /* Free up sg elements */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5312 | for (j = 0; j < h->nr_cmds; j++) |
| 5313 | kfree(h->scatter_list[j]); |
| 5314 | kfree(h->scatter_list); |
| 5315 | cciss_free_sg_chain_blocks(h->cmd_sg_list, h->nr_cmds); |
Stephen M. Cameron | e363e01 | 2011-05-03 14:53:21 -0500 | [diff] [blame] | 5316 | kfree(h->blockFetchTable); |
| 5317 | if (h->reply_pool) |
| 5318 | pci_free_consistent(h->pdev, h->max_commands * sizeof(__u64), |
| 5319 | h->reply_pool, h->reply_pool_dhandle); |
Mike Miller | 872225c | 2006-12-13 00:34:22 -0800 | [diff] [blame] | 5320 | /* |
| 5321 | * Deliberately omit pci_disable_device(): it does something nasty to |
| 5322 | * Smart Array controllers that pci_enable_device does not undo |
| 5323 | */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 5324 | pci_release_regions(pdev); |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 5325 | pci_set_drvdata(pdev, NULL); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 5326 | cciss_destroy_hba_sysfs_entry(h); |
| 5327 | mutex_unlock(&h->busy_shutting_down); |
| 5328 | free_hba(h); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 5329 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5330 | |
| 5331 | static struct pci_driver cciss_pci_driver = { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 5332 | .name = "cciss", |
| 5333 | .probe = cciss_init_one, |
Greg Kroah-Hartman | 8d85fce | 2012-12-21 15:13:49 -0800 | [diff] [blame] | 5334 | .remove = cciss_remove_one, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 5335 | .id_table = cciss_pci_device_id, /* id_table */ |
Gerald Britton | e9ca75b | 2007-05-14 13:53:01 -0400 | [diff] [blame] | 5336 | .shutdown = cciss_shutdown, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5337 | }; |
| 5338 | |
| 5339 | /* |
| 5340 | * This is it. Register the PCI driver information for the cards we control |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 5341 | * the OS will call our registered routines when it finds one of our cards. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5342 | */ |
| 5343 | static int __init cciss_init(void) |
| 5344 | { |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 5345 | int err; |
| 5346 | |
Jens Axboe | 10cbda9 | 2009-02-27 20:14:20 +0100 | [diff] [blame] | 5347 | /* |
| 5348 | * The hardware requires that commands are aligned on a 64-bit |
| 5349 | * boundary. Given that we use pci_alloc_consistent() to allocate an |
| 5350 | * array of them, the size must be a multiple of 8 bytes. |
| 5351 | */ |
Stephen M. Cameron | 1b7d0d2 | 2010-02-26 16:01:17 -0600 | [diff] [blame] | 5352 | BUILD_BUG_ON(sizeof(CommandList_struct) % COMMANDLIST_ALIGNMENT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5353 | printk(KERN_INFO DRIVER_NAME "\n"); |
| 5354 | |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 5355 | err = bus_register(&cciss_bus_type); |
| 5356 | if (err) |
| 5357 | return err; |
| 5358 | |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 5359 | /* Start the scan thread */ |
| 5360 | cciss_scan_thread = kthread_run(scan_thread, NULL, "cciss_scan"); |
| 5361 | if (IS_ERR(cciss_scan_thread)) { |
| 5362 | err = PTR_ERR(cciss_scan_thread); |
| 5363 | goto err_bus_unregister; |
| 5364 | } |
| 5365 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5366 | /* Register for our PCI devices */ |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 5367 | err = pci_register_driver(&cciss_pci_driver); |
| 5368 | if (err) |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 5369 | goto err_thread_stop; |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 5370 | |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 5371 | return err; |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 5372 | |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 5373 | err_thread_stop: |
| 5374 | kthread_stop(cciss_scan_thread); |
| 5375 | err_bus_unregister: |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 5376 | bus_unregister(&cciss_bus_type); |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 5377 | |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 5378 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5379 | } |
| 5380 | |
| 5381 | static void __exit cciss_cleanup(void) |
| 5382 | { |
| 5383 | int i; |
| 5384 | |
| 5385 | pci_unregister_driver(&cciss_pci_driver); |
| 5386 | /* double check that all controller entrys have been removed */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 5387 | for (i = 0; i < MAX_CTLR; i++) { |
| 5388 | if (hba[i] != NULL) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 5389 | dev_warn(&hba[i]->pdev->dev, |
| 5390 | "had to remove controller\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5391 | cciss_remove_one(hba[i]->pdev); |
| 5392 | } |
| 5393 | } |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 5394 | kthread_stop(cciss_scan_thread); |
Jens Axboe | 90fdb0b | 2010-11-08 14:29:13 +0100 | [diff] [blame] | 5395 | if (proc_cciss) |
| 5396 | remove_proc_entry("driver/cciss", NULL); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 5397 | bus_unregister(&cciss_bus_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5398 | } |
| 5399 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5400 | module_init(cciss_init); |
| 5401 | module_exit(cciss_cleanup); |