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> |
| 27 | #include <linux/kernel.h> |
| 28 | #include <linux/slab.h> |
Alexey Dobriyan | 405f557 | 2009-07-11 22:08:37 +0400 | [diff] [blame] | 29 | #include <linux/smp_lock.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | #include <asm/uaccess.h> |
| 45 | #include <asm/io.h> |
| 46 | |
mike.miller@hp.com | eb0df99 | 2005-06-10 14:51:04 -0500 | [diff] [blame] | 47 | #include <linux/dma-mapping.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | #include <linux/blkdev.h> |
| 49 | #include <linux/genhd.h> |
| 50 | #include <linux/completion.h> |
Stephen Cameron | d5d3b73 | 2007-05-08 00:30:02 -0700 | [diff] [blame] | 51 | #include <scsi/scsi.h> |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 52 | #include <scsi/sg.h> |
| 53 | #include <scsi/scsi_ioctl.h> |
| 54 | #include <linux/cdrom.h> |
Mike Pagano | 231bc2a | 2008-04-10 21:29:26 -0700 | [diff] [blame] | 55 | #include <linux/scatterlist.h> |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 56 | #include <linux/kthread.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | |
| 58 | #define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin)) |
Mike Miller | 841fdff | 2010-06-02 12:58:09 -0700 | [diff] [blame] | 59 | #define DRIVER_NAME "HP CISS Driver (v 3.6.26)" |
| 60 | #define DRIVER_VERSION CCISS_DRIVER_VERSION(3, 6, 26) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | |
| 62 | /* Embedded module documentation macros - see modules.h */ |
| 63 | MODULE_AUTHOR("Hewlett-Packard Company"); |
Mike Miller | 24aac48 | 2008-06-12 15:21:34 -0700 | [diff] [blame] | 64 | MODULE_DESCRIPTION("Driver for HP Smart Array Controllers"); |
Mike Miller | 841fdff | 2010-06-02 12:58:09 -0700 | [diff] [blame] | 65 | MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers"); |
| 66 | MODULE_VERSION("3.6.26"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | MODULE_LICENSE("GPL"); |
| 68 | |
Stephen M. Cameron | 2ec24ff | 2009-10-13 09:18:22 +0200 | [diff] [blame] | 69 | static int cciss_allow_hpsa; |
| 70 | module_param(cciss_allow_hpsa, int, S_IRUGO|S_IWUSR); |
| 71 | MODULE_PARM_DESC(cciss_allow_hpsa, |
| 72 | "Prevent cciss driver from accessing hardware known to be " |
| 73 | " supported by the hpsa driver"); |
| 74 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | #include "cciss_cmd.h" |
| 76 | #include "cciss.h" |
| 77 | #include <linux/cciss_ioctl.h> |
| 78 | |
| 79 | /* define the PCI info for the cards we can control */ |
| 80 | static const struct pci_device_id cciss_pci_device_id[] = { |
Bjorn Helgaas | f82ccdb | 2006-06-25 05:49:07 -0700 | [diff] [blame] | 81 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISS, 0x0E11, 0x4070}, |
| 82 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4080}, |
| 83 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4082}, |
| 84 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4083}, |
| 85 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x4091}, |
| 86 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409A}, |
| 87 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409B}, |
| 88 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409C}, |
| 89 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409D}, |
| 90 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSA, 0x103C, 0x3225}, |
| 91 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3223}, |
| 92 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3234}, |
| 93 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3235}, |
| 94 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3211}, |
| 95 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3212}, |
| 96 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3213}, |
| 97 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3214}, |
| 98 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3215}, |
Mike Miller | de92391 | 2006-12-06 20:35:03 -0800 | [diff] [blame] | 99 | {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] | 100 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x323D}, |
Mike Miller | 24aac48 | 2008-06-12 15:21:34 -0700 | [diff] [blame] | 101 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3241}, |
| 102 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3243}, |
| 103 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3245}, |
| 104 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3247}, |
| 105 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3249}, |
Mike Miller | 77ca728 | 2008-11-06 12:53:14 -0800 | [diff] [blame] | 106 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324A}, |
| 107 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324B}, |
Mike Miller | 841fdff | 2010-06-02 12:58:09 -0700 | [diff] [blame] | 108 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3250}, |
| 109 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3251}, |
| 110 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3252}, |
| 111 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3253}, |
| 112 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3254}, |
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}, |
Mike Miller | 4915399 | 2008-07-04 10:00:02 -0700 | [diff] [blame] | 133 | {0x3235103C, "Smart Array P400i", &SA5_access}, |
| 134 | {0x3211103C, "Smart Array E200i", &SA5_access}, |
| 135 | {0x3212103C, "Smart Array E200", &SA5_access}, |
| 136 | {0x3213103C, "Smart Array E200i", &SA5_access}, |
| 137 | {0x3214103C, "Smart Array E200i", &SA5_access}, |
| 138 | {0x3215103C, "Smart Array E200i", &SA5_access}, |
| 139 | {0x3237103C, "Smart Array E500", &SA5_access}, |
Stephen M. Cameron | 2ec24ff | 2009-10-13 09:18:22 +0200 | [diff] [blame] | 140 | /* controllers below this line are also supported by the hpsa driver. */ |
| 141 | #define HPSA_BOUNDARY 0x3223103C |
| 142 | {0x3223103C, "Smart Array P800", &SA5_access}, |
| 143 | {0x3234103C, "Smart Array P400", &SA5_access}, |
Mike Miller | 4915399 | 2008-07-04 10:00:02 -0700 | [diff] [blame] | 144 | {0x323D103C, "Smart Array P700m", &SA5_access}, |
| 145 | {0x3241103C, "Smart Array P212", &SA5_access}, |
| 146 | {0x3243103C, "Smart Array P410", &SA5_access}, |
| 147 | {0x3245103C, "Smart Array P410i", &SA5_access}, |
| 148 | {0x3247103C, "Smart Array P411", &SA5_access}, |
| 149 | {0x3249103C, "Smart Array P812", &SA5_access}, |
Mike Miller | 77ca728 | 2008-11-06 12:53:14 -0800 | [diff] [blame] | 150 | {0x324A103C, "Smart Array P712m", &SA5_access}, |
| 151 | {0x324B103C, "Smart Array P711m", &SA5_access}, |
Mike Miller | 841fdff | 2010-06-02 12:58:09 -0700 | [diff] [blame] | 152 | {0x3250103C, "Smart Array", &SA5_access}, |
| 153 | {0x3251103C, "Smart Array", &SA5_access}, |
| 154 | {0x3252103C, "Smart Array", &SA5_access}, |
| 155 | {0x3253103C, "Smart Array", &SA5_access}, |
| 156 | {0x3254103C, "Smart Array", &SA5_access}, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | }; |
| 158 | |
Bjorn Helgaas | d14c4ab | 2006-06-25 05:49:04 -0700 | [diff] [blame] | 159 | /* 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] | 160 | #define MAX_CONFIG_WAIT 30000 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | #define MAX_IOCTL_CONFIG_WAIT 1000 |
| 162 | |
| 163 | /*define how many times we will try a command because of bus resets */ |
| 164 | #define MAX_CMD_RETRIES 3 |
| 165 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | #define MAX_CTLR 32 |
| 167 | |
| 168 | /* Originally cciss driver only supports 8 major numbers */ |
| 169 | #define MAX_CTLR_ORIG 8 |
| 170 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | static ctlr_info_t *hba[MAX_CTLR]; |
| 172 | |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 173 | static struct task_struct *cciss_scan_thread; |
| 174 | static DEFINE_MUTEX(scan_mutex); |
| 175 | static LIST_HEAD(scan_q); |
| 176 | |
Jens Axboe | 165125e | 2007-07-24 09:28:11 +0200 | [diff] [blame] | 177 | static void do_cciss_request(struct request_queue *q); |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 178 | static irqreturn_t do_cciss_intx(int irq, void *dev_id); |
| 179 | static irqreturn_t do_cciss_msix_intr(int irq, void *dev_id); |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 180 | static int cciss_open(struct block_device *bdev, fmode_t mode); |
Arnd Bergmann | 6e9624b | 2010-08-07 18:25:34 +0200 | [diff] [blame] | 181 | static int cciss_unlocked_open(struct block_device *bdev, fmode_t mode); |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 182 | static int cciss_release(struct gendisk *disk, fmode_t mode); |
Arnd Bergmann | 8a6cfeb | 2010-07-08 10:18:46 +0200 | [diff] [blame] | 183 | static int do_ioctl(struct block_device *bdev, fmode_t mode, |
| 184 | unsigned int cmd, unsigned long arg); |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 185 | static int cciss_ioctl(struct block_device *bdev, fmode_t mode, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 186 | unsigned int cmd, unsigned long arg); |
Christoph Hellwig | a885c8c | 2006-01-08 01:02:50 -0800 | [diff] [blame] | 187 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | static int cciss_revalidate(struct gendisk *disk); |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 190 | 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] | 191 | static int deregister_disk(ctlr_info_t *h, int drv_index, |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 192 | int clear_all, int via_ioctl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 194 | 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] | 195 | sector_t *total_size, unsigned int *block_size); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 196 | 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] | 197 | sector_t *total_size, unsigned int *block_size); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 198 | static void cciss_geometry_inquiry(ctlr_info_t *h, int logvol, |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 199 | sector_t total_size, |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 200 | unsigned int block_size, InquiryData_struct *inq_buff, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 201 | drive_info_struct *drv); |
Stephen M. Cameron | dac5488 | 2010-07-19 13:45:05 -0500 | [diff] [blame] | 202 | static void __devinit cciss_interrupt_mode(ctlr_info_t *); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 203 | static void start_io(ctlr_info_t *h); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 204 | 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] | 205 | __u8 page_code, unsigned char scsi3addr[], |
| 206 | int cmd_type); |
scameron@beardog.cca.cpqcorp.net | 85cc61a | 2009-06-08 16:07:45 -0500 | [diff] [blame] | 207 | static int sendcmd_withirq_core(ctlr_info_t *h, CommandList_struct *c, |
| 208 | int attempt_retry); |
| 209 | static int process_sendcmd_error(ctlr_info_t *h, CommandList_struct *c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | |
Andrew Patterson | d6f4965 | 2009-09-17 13:47:03 -0500 | [diff] [blame] | 211 | static int add_to_scan_list(struct ctlr_info *h); |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 212 | static int scan_thread(void *data); |
| 213 | 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] | 214 | static void cciss_hba_release(struct device *dev); |
| 215 | static void cciss_device_release(struct device *dev); |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 216 | 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] | 217 | 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] | 218 | static inline u32 next_command(ctlr_info_t *h); |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 219 | static int __devinit cciss_find_cfg_addrs(struct pci_dev *pdev, |
| 220 | void __iomem *vaddr, u32 *cfg_base_addr, u64 *cfg_base_addr_index, |
| 221 | u64 *cfg_offset); |
| 222 | static int __devinit cciss_pci_find_memory_BAR(struct pci_dev *pdev, |
| 223 | unsigned long *memory_bar); |
| 224 | |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 225 | |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 226 | /* performant mode helper functions */ |
| 227 | static void calc_bucket_map(int *bucket, int num_buckets, int nsgs, |
| 228 | int *bucket_map); |
| 229 | static void cciss_put_controller_into_performant_mode(ctlr_info_t *h); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | |
| 231 | #ifdef CONFIG_PROC_FS |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 232 | static void cciss_procinit(ctlr_info_t *h); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | #else |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 234 | static void cciss_procinit(ctlr_info_t *h) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 235 | { |
| 236 | } |
| 237 | #endif /* CONFIG_PROC_FS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | |
| 239 | #ifdef CONFIG_COMPAT |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 240 | static int cciss_compat_ioctl(struct block_device *, fmode_t, |
| 241 | unsigned, unsigned long); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | #endif |
| 243 | |
Alexey Dobriyan | 83d5cde | 2009-09-21 17:01:13 -0700 | [diff] [blame] | 244 | static const struct block_device_operations cciss_fops = { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 245 | .owner = THIS_MODULE, |
Arnd Bergmann | 6e9624b | 2010-08-07 18:25:34 +0200 | [diff] [blame] | 246 | .open = cciss_unlocked_open, |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 247 | .release = cciss_release, |
Arnd Bergmann | 8a6cfeb | 2010-07-08 10:18:46 +0200 | [diff] [blame] | 248 | .ioctl = do_ioctl, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 249 | .getgeo = cciss_getgeo, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | #ifdef CONFIG_COMPAT |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 251 | .compat_ioctl = cciss_compat_ioctl, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | #endif |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 253 | .revalidate_disk = cciss_revalidate, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | }; |
| 255 | |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 256 | /* set_performant_mode: Modify the tag for cciss performant |
| 257 | * set bit 0 for pull model, bits 3-1 for block fetch |
| 258 | * register number |
| 259 | */ |
| 260 | static void set_performant_mode(ctlr_info_t *h, CommandList_struct *c) |
| 261 | { |
| 262 | if (likely(h->transMethod == CFGTBL_Trans_Performant)) |
| 263 | c->busaddr |= 1 | (h->blockFetchTable[c->Header.SGList] << 1); |
| 264 | } |
| 265 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | /* |
| 267 | * Enqueuing and dequeuing functions for cmdlists. |
| 268 | */ |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 269 | static inline void addQ(struct hlist_head *list, CommandList_struct *c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | { |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 271 | hlist_add_head(&c->list, list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | } |
| 273 | |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 274 | static inline void removeQ(CommandList_struct *c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | { |
Hannes Reinecke | b59e64d | 2009-07-02 22:02:06 +0200 | [diff] [blame] | 276 | /* |
| 277 | * After kexec/dump some commands might still |
| 278 | * be in flight, which the firmware will try |
| 279 | * to complete. Resetting the firmware doesn't work |
| 280 | * with old fw revisions, so we have to mark |
| 281 | * them off as 'stale' to prevent the driver from |
| 282 | * falling over. |
| 283 | */ |
| 284 | if (WARN_ON(hlist_unhashed(&c->list))) { |
| 285 | c->cmd_type = CMD_MSG_STALE; |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 286 | return; |
Hannes Reinecke | b59e64d | 2009-07-02 22:02:06 +0200 | [diff] [blame] | 287 | } |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 288 | |
| 289 | hlist_del_init(&c->list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | } |
| 291 | |
Mike Miller | 664a717 | 2010-06-02 12:57:58 -0700 | [diff] [blame] | 292 | static void enqueue_cmd_and_start_io(ctlr_info_t *h, |
| 293 | CommandList_struct *c) |
| 294 | { |
| 295 | unsigned long flags; |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 296 | set_performant_mode(h, c); |
Mike Miller | 664a717 | 2010-06-02 12:57:58 -0700 | [diff] [blame] | 297 | spin_lock_irqsave(&h->lock, flags); |
| 298 | addQ(&h->reqQ, c); |
| 299 | h->Qdepth++; |
Stephen M. Cameron | 2a643ec | 2010-08-25 19:58:53 +0200 | [diff] [blame] | 300 | if (h->Qdepth > h->maxQsinceinit) |
| 301 | h->maxQsinceinit = h->Qdepth; |
Mike Miller | 664a717 | 2010-06-02 12:57:58 -0700 | [diff] [blame] | 302 | start_io(h); |
| 303 | spin_unlock_irqrestore(&h->lock, flags); |
| 304 | } |
| 305 | |
Stephen M. Cameron | dccc9b5 | 2010-02-26 16:01:27 -0600 | [diff] [blame] | 306 | 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] | 307 | int nr_cmds) |
| 308 | { |
| 309 | int i; |
| 310 | |
| 311 | if (!cmd_sg_list) |
| 312 | return; |
| 313 | for (i = 0; i < nr_cmds; i++) { |
Stephen M. Cameron | dccc9b5 | 2010-02-26 16:01:27 -0600 | [diff] [blame] | 314 | kfree(cmd_sg_list[i]); |
| 315 | cmd_sg_list[i] = NULL; |
Stephen M. Cameron | 49fc560 | 2010-02-26 16:01:22 -0600 | [diff] [blame] | 316 | } |
| 317 | kfree(cmd_sg_list); |
| 318 | } |
| 319 | |
Stephen M. Cameron | dccc9b5 | 2010-02-26 16:01:27 -0600 | [diff] [blame] | 320 | static SGDescriptor_struct **cciss_allocate_sg_chain_blocks( |
| 321 | ctlr_info_t *h, int chainsize, int nr_cmds) |
Stephen M. Cameron | 49fc560 | 2010-02-26 16:01:22 -0600 | [diff] [blame] | 322 | { |
| 323 | int j; |
Stephen M. Cameron | dccc9b5 | 2010-02-26 16:01:27 -0600 | [diff] [blame] | 324 | SGDescriptor_struct **cmd_sg_list; |
Stephen M. Cameron | 49fc560 | 2010-02-26 16:01:22 -0600 | [diff] [blame] | 325 | |
| 326 | if (chainsize <= 0) |
| 327 | return NULL; |
| 328 | |
| 329 | cmd_sg_list = kmalloc(sizeof(*cmd_sg_list) * nr_cmds, GFP_KERNEL); |
| 330 | if (!cmd_sg_list) |
| 331 | return NULL; |
| 332 | |
| 333 | /* Build up chain blocks for each command */ |
| 334 | for (j = 0; j < nr_cmds; j++) { |
Stephen M. Cameron | 49fc560 | 2010-02-26 16:01:22 -0600 | [diff] [blame] | 335 | /* Need a block of chainsized s/g elements. */ |
Stephen M. Cameron | dccc9b5 | 2010-02-26 16:01:27 -0600 | [diff] [blame] | 336 | cmd_sg_list[j] = kmalloc((chainsize * |
| 337 | sizeof(*cmd_sg_list[j])), GFP_KERNEL); |
| 338 | if (!cmd_sg_list[j]) { |
Stephen M. Cameron | 49fc560 | 2010-02-26 16:01:22 -0600 | [diff] [blame] | 339 | dev_err(&h->pdev->dev, "Cannot get memory " |
| 340 | "for s/g chains.\n"); |
| 341 | goto clean; |
| 342 | } |
| 343 | } |
| 344 | return cmd_sg_list; |
| 345 | clean: |
| 346 | cciss_free_sg_chain_blocks(cmd_sg_list, nr_cmds); |
| 347 | return NULL; |
| 348 | } |
| 349 | |
Stephen M. Cameron | d45033e | 2010-02-26 16:01:37 -0600 | [diff] [blame] | 350 | static void cciss_unmap_sg_chain_block(ctlr_info_t *h, CommandList_struct *c) |
| 351 | { |
| 352 | SGDescriptor_struct *chain_sg; |
| 353 | u64bit temp64; |
| 354 | |
| 355 | if (c->Header.SGTotal <= h->max_cmd_sgentries) |
| 356 | return; |
| 357 | |
| 358 | chain_sg = &c->SG[h->max_cmd_sgentries - 1]; |
| 359 | temp64.val32.lower = chain_sg->Addr.lower; |
| 360 | temp64.val32.upper = chain_sg->Addr.upper; |
| 361 | pci_unmap_single(h->pdev, temp64.val, chain_sg->Len, PCI_DMA_TODEVICE); |
| 362 | } |
| 363 | |
| 364 | static void cciss_map_sg_chain_block(ctlr_info_t *h, CommandList_struct *c, |
| 365 | SGDescriptor_struct *chain_block, int len) |
| 366 | { |
| 367 | SGDescriptor_struct *chain_sg; |
| 368 | u64bit temp64; |
| 369 | |
| 370 | chain_sg = &c->SG[h->max_cmd_sgentries - 1]; |
| 371 | chain_sg->Ext = CCISS_SG_CHAIN; |
| 372 | chain_sg->Len = len; |
| 373 | temp64.val = pci_map_single(h->pdev, chain_block, len, |
| 374 | PCI_DMA_TODEVICE); |
| 375 | chain_sg->Addr.lower = temp64.val32.lower; |
| 376 | chain_sg->Addr.upper = temp64.val32.upper; |
| 377 | } |
| 378 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | #include "cciss_scsi.c" /* For SCSI tape support */ |
| 380 | |
Alexander Beregalov | 1e6f2dc | 2009-09-24 16:15:38 +0200 | [diff] [blame] | 381 | static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG", |
| 382 | "UNKNOWN" |
| 383 | }; |
Kulikov Vasiliy | 0e4a9d0 | 2010-06-28 15:54:44 +0400 | [diff] [blame] | 384 | #define RAID_UNKNOWN (ARRAY_SIZE(raid_label)-1) |
Randy Dunlap | 0f5486e | 2006-12-29 16:48:31 -0800 | [diff] [blame] | 385 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | #ifdef CONFIG_PROC_FS |
| 387 | |
| 388 | /* |
| 389 | * Report information about this controller. |
| 390 | */ |
| 391 | #define ENG_GIG 1000000000 |
| 392 | #define ENG_GIG_FACTOR (ENG_GIG/512) |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 393 | #define ENGAGE_SCSI "engage scsi" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 394 | |
| 395 | static struct proc_dir_entry *proc_cciss; |
| 396 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 397 | static void cciss_seq_show_header(struct seq_file *seq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | { |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 399 | ctlr_info_t *h = seq->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 401 | seq_printf(seq, "%s: HP %s Controller\n" |
| 402 | "Board ID: 0x%08lx\n" |
| 403 | "Firmware Version: %c%c%c%c\n" |
| 404 | "IRQ: %d\n" |
| 405 | "Logical drives: %d\n" |
| 406 | "Current Q depth: %d\n" |
| 407 | "Current # commands on controller: %d\n" |
| 408 | "Max Q depth since init: %d\n" |
| 409 | "Max # commands on controller since init: %d\n" |
| 410 | "Max SG entries since init: %d\n", |
| 411 | h->devname, |
| 412 | h->product_name, |
| 413 | (unsigned long)h->board_id, |
| 414 | h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 415 | h->firm_ver[3], (unsigned int)h->intr[PERF_MODE_INT], |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 416 | h->num_luns, |
| 417 | h->Qdepth, h->commands_outstanding, |
| 418 | h->maxQsinceinit, h->max_outstanding, h->maxSG); |
| 419 | |
| 420 | #ifdef CONFIG_CISS_SCSI_TAPE |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 421 | cciss_seq_tape_report(seq, h); |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 422 | #endif /* CONFIG_CISS_SCSI_TAPE */ |
| 423 | } |
| 424 | |
| 425 | static void *cciss_seq_start(struct seq_file *seq, loff_t *pos) |
| 426 | { |
| 427 | ctlr_info_t *h = seq->private; |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 428 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 429 | |
| 430 | /* prevent displaying bogus info during configuration |
| 431 | * or deconfiguration of a logical volume |
| 432 | */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 433 | spin_lock_irqsave(&h->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | if (h->busy_configuring) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 435 | spin_unlock_irqrestore(&h->lock, flags); |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 436 | return ERR_PTR(-EBUSY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | } |
| 438 | h->busy_configuring = 1; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 439 | spin_unlock_irqrestore(&h->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 440 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 441 | if (*pos == 0) |
| 442 | cciss_seq_show_header(seq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 444 | return pos; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | } |
| 446 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 447 | static int cciss_seq_show(struct seq_file *seq, void *v) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | { |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 449 | sector_t vol_sz, vol_sz_frac; |
| 450 | ctlr_info_t *h = seq->private; |
| 451 | unsigned ctlr = h->ctlr; |
| 452 | loff_t *pos = v; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 453 | drive_info_struct *drv = h->drv[*pos]; |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 454 | |
| 455 | if (*pos > h->highest_lun) |
| 456 | return 0; |
| 457 | |
Stephen M. Cameron | 531c2dc | 2010-02-05 13:14:04 +0100 | [diff] [blame] | 458 | if (drv == NULL) /* it's possible for h->drv[] to have holes. */ |
| 459 | return 0; |
| 460 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 461 | if (drv->heads == 0) |
| 462 | return 0; |
| 463 | |
| 464 | vol_sz = drv->nr_blocks; |
| 465 | vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR); |
| 466 | vol_sz_frac *= 100; |
| 467 | sector_div(vol_sz_frac, ENG_GIG_FACTOR); |
| 468 | |
Stephen M. Cameron | fa52bec | 2009-09-17 13:48:15 -0500 | [diff] [blame] | 469 | if (drv->raid_level < 0 || drv->raid_level > RAID_UNKNOWN) |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 470 | drv->raid_level = RAID_UNKNOWN; |
| 471 | seq_printf(seq, "cciss/c%dd%d:" |
| 472 | "\t%4u.%02uGB\tRAID %s\n", |
| 473 | ctlr, (int) *pos, (int)vol_sz, (int)vol_sz_frac, |
| 474 | raid_label[drv->raid_level]); |
| 475 | return 0; |
| 476 | } |
| 477 | |
| 478 | static void *cciss_seq_next(struct seq_file *seq, void *v, loff_t *pos) |
| 479 | { |
| 480 | ctlr_info_t *h = seq->private; |
| 481 | |
| 482 | if (*pos > h->highest_lun) |
| 483 | return NULL; |
| 484 | *pos += 1; |
| 485 | |
| 486 | return pos; |
| 487 | } |
| 488 | |
| 489 | static void cciss_seq_stop(struct seq_file *seq, void *v) |
| 490 | { |
| 491 | ctlr_info_t *h = seq->private; |
| 492 | |
| 493 | /* Only reset h->busy_configuring if we succeeded in setting |
| 494 | * it during cciss_seq_start. */ |
| 495 | if (v == ERR_PTR(-EBUSY)) |
| 496 | return; |
| 497 | |
| 498 | h->busy_configuring = 0; |
| 499 | } |
| 500 | |
James Morris | 88e9d34 | 2009-09-22 16:43:43 -0700 | [diff] [blame] | 501 | static const struct seq_operations cciss_seq_ops = { |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 502 | .start = cciss_seq_start, |
| 503 | .show = cciss_seq_show, |
| 504 | .next = cciss_seq_next, |
| 505 | .stop = cciss_seq_stop, |
| 506 | }; |
| 507 | |
| 508 | static int cciss_seq_open(struct inode *inode, struct file *file) |
| 509 | { |
| 510 | int ret = seq_open(file, &cciss_seq_ops); |
| 511 | struct seq_file *seq = file->private_data; |
| 512 | |
| 513 | if (!ret) |
| 514 | seq->private = PDE(inode)->data; |
| 515 | |
| 516 | return ret; |
| 517 | } |
| 518 | |
| 519 | static ssize_t |
| 520 | cciss_proc_write(struct file *file, const char __user *buf, |
| 521 | size_t length, loff_t *ppos) |
| 522 | { |
| 523 | int err; |
| 524 | char *buffer; |
| 525 | |
| 526 | #ifndef CONFIG_CISS_SCSI_TAPE |
| 527 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | #endif |
| 529 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 530 | if (!buf || length > PAGE_SIZE - 1) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 531 | return -EINVAL; |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 532 | |
| 533 | buffer = (char *)__get_free_page(GFP_KERNEL); |
| 534 | if (!buffer) |
| 535 | return -ENOMEM; |
| 536 | |
| 537 | err = -EFAULT; |
| 538 | if (copy_from_user(buffer, buf, length)) |
| 539 | goto out; |
| 540 | buffer[length] = '\0'; |
| 541 | |
| 542 | #ifdef CONFIG_CISS_SCSI_TAPE |
| 543 | if (strncmp(ENGAGE_SCSI, buffer, sizeof ENGAGE_SCSI - 1) == 0) { |
| 544 | struct seq_file *seq = file->private_data; |
| 545 | ctlr_info_t *h = seq->private; |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 546 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 547 | err = cciss_engage_scsi(h); |
Stephen M. Cameron | 8721c81 | 2009-11-12 12:50:06 -0600 | [diff] [blame] | 548 | if (err == 0) |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 549 | err = length; |
| 550 | } else |
| 551 | #endif /* CONFIG_CISS_SCSI_TAPE */ |
| 552 | err = -EINVAL; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 553 | /* might be nice to have "disengage" too, but it's not |
| 554 | safely possible. (only 1 module use count, lock issues.) */ |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 555 | |
| 556 | out: |
| 557 | free_page((unsigned long)buffer); |
| 558 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | } |
| 560 | |
Alexey Dobriyan | 828c095 | 2009-10-01 15:43:56 -0700 | [diff] [blame] | 561 | static const struct file_operations cciss_proc_fops = { |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 562 | .owner = THIS_MODULE, |
| 563 | .open = cciss_seq_open, |
| 564 | .read = seq_read, |
| 565 | .llseek = seq_lseek, |
| 566 | .release = seq_release, |
| 567 | .write = cciss_proc_write, |
| 568 | }; |
| 569 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 570 | static void __devinit cciss_procinit(ctlr_info_t *h) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | { |
| 572 | struct proc_dir_entry *pde; |
| 573 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 574 | if (proc_cciss == NULL) |
Alexey Dobriyan | 928b4d8 | 2008-04-29 01:01:44 -0700 | [diff] [blame] | 575 | proc_cciss = proc_mkdir("driver/cciss", NULL); |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 576 | if (!proc_cciss) |
| 577 | return; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 578 | pde = proc_create_data(h->devname, S_IWUSR | S_IRUSR | S_IRGRP | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 579 | S_IROTH, proc_cciss, |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 580 | &cciss_proc_fops, h); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 581 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 582 | #endif /* CONFIG_PROC_FS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 583 | |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 584 | #define MAX_PRODUCT_NAME_LEN 19 |
| 585 | |
| 586 | #define to_hba(n) container_of(n, struct ctlr_info, dev) |
| 587 | #define to_drv(n) container_of(n, drive_info_struct, dev) |
| 588 | |
Andrew Patterson | d6f4965 | 2009-09-17 13:47:03 -0500 | [diff] [blame] | 589 | static ssize_t host_store_rescan(struct device *dev, |
| 590 | struct device_attribute *attr, |
| 591 | const char *buf, size_t count) |
| 592 | { |
| 593 | struct ctlr_info *h = to_hba(dev); |
| 594 | |
| 595 | add_to_scan_list(h); |
| 596 | wake_up_process(cciss_scan_thread); |
| 597 | wait_for_completion_interruptible(&h->scan_wait); |
| 598 | |
| 599 | return count; |
| 600 | } |
Alex Chiang | 8ba95c6 | 2009-11-12 12:49:14 -0600 | [diff] [blame] | 601 | static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 602 | |
| 603 | static ssize_t dev_show_unique_id(struct device *dev, |
| 604 | struct device_attribute *attr, |
| 605 | char *buf) |
| 606 | { |
| 607 | drive_info_struct *drv = to_drv(dev); |
| 608 | struct ctlr_info *h = to_hba(drv->dev.parent); |
| 609 | __u8 sn[16]; |
| 610 | unsigned long flags; |
| 611 | int ret = 0; |
| 612 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 613 | spin_lock_irqsave(&h->lock, flags); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 614 | if (h->busy_configuring) |
| 615 | ret = -EBUSY; |
| 616 | else |
| 617 | memcpy(sn, drv->serial_no, sizeof(sn)); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 618 | spin_unlock_irqrestore(&h->lock, flags); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 619 | |
| 620 | if (ret) |
| 621 | return ret; |
| 622 | else |
| 623 | return snprintf(buf, 16 * 2 + 2, |
| 624 | "%02X%02X%02X%02X%02X%02X%02X%02X" |
| 625 | "%02X%02X%02X%02X%02X%02X%02X%02X\n", |
| 626 | sn[0], sn[1], sn[2], sn[3], |
| 627 | sn[4], sn[5], sn[6], sn[7], |
| 628 | sn[8], sn[9], sn[10], sn[11], |
| 629 | sn[12], sn[13], sn[14], sn[15]); |
| 630 | } |
Alex Chiang | 8ba95c6 | 2009-11-12 12:49:14 -0600 | [diff] [blame] | 631 | static DEVICE_ATTR(unique_id, S_IRUGO, dev_show_unique_id, NULL); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 632 | |
| 633 | static ssize_t dev_show_vendor(struct device *dev, |
| 634 | struct device_attribute *attr, |
| 635 | char *buf) |
| 636 | { |
| 637 | drive_info_struct *drv = to_drv(dev); |
| 638 | struct ctlr_info *h = to_hba(drv->dev.parent); |
| 639 | char vendor[VENDOR_LEN + 1]; |
| 640 | unsigned long flags; |
| 641 | int ret = 0; |
| 642 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 643 | spin_lock_irqsave(&h->lock, flags); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 644 | if (h->busy_configuring) |
| 645 | ret = -EBUSY; |
| 646 | else |
| 647 | memcpy(vendor, drv->vendor, VENDOR_LEN + 1); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 648 | spin_unlock_irqrestore(&h->lock, flags); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 649 | |
| 650 | if (ret) |
| 651 | return ret; |
| 652 | else |
| 653 | return snprintf(buf, sizeof(vendor) + 1, "%s\n", drv->vendor); |
| 654 | } |
Alex Chiang | 8ba95c6 | 2009-11-12 12:49:14 -0600 | [diff] [blame] | 655 | static DEVICE_ATTR(vendor, S_IRUGO, dev_show_vendor, NULL); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 656 | |
| 657 | static ssize_t dev_show_model(struct device *dev, |
| 658 | struct device_attribute *attr, |
| 659 | char *buf) |
| 660 | { |
| 661 | drive_info_struct *drv = to_drv(dev); |
| 662 | struct ctlr_info *h = to_hba(drv->dev.parent); |
| 663 | char model[MODEL_LEN + 1]; |
| 664 | unsigned long flags; |
| 665 | int ret = 0; |
| 666 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 667 | spin_lock_irqsave(&h->lock, flags); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 668 | if (h->busy_configuring) |
| 669 | ret = -EBUSY; |
| 670 | else |
| 671 | memcpy(model, drv->model, MODEL_LEN + 1); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 672 | spin_unlock_irqrestore(&h->lock, flags); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 673 | |
| 674 | if (ret) |
| 675 | return ret; |
| 676 | else |
| 677 | return snprintf(buf, sizeof(model) + 1, "%s\n", drv->model); |
| 678 | } |
Alex Chiang | 8ba95c6 | 2009-11-12 12:49:14 -0600 | [diff] [blame] | 679 | static DEVICE_ATTR(model, S_IRUGO, dev_show_model, NULL); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 680 | |
| 681 | static ssize_t dev_show_rev(struct device *dev, |
| 682 | struct device_attribute *attr, |
| 683 | char *buf) |
| 684 | { |
| 685 | drive_info_struct *drv = to_drv(dev); |
| 686 | struct ctlr_info *h = to_hba(drv->dev.parent); |
| 687 | char rev[REV_LEN + 1]; |
| 688 | unsigned long flags; |
| 689 | int ret = 0; |
| 690 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 691 | spin_lock_irqsave(&h->lock, flags); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 692 | if (h->busy_configuring) |
| 693 | ret = -EBUSY; |
| 694 | else |
| 695 | memcpy(rev, drv->rev, REV_LEN + 1); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 696 | spin_unlock_irqrestore(&h->lock, flags); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 697 | |
| 698 | if (ret) |
| 699 | return ret; |
| 700 | else |
| 701 | return snprintf(buf, sizeof(rev) + 1, "%s\n", drv->rev); |
| 702 | } |
Alex Chiang | 8ba95c6 | 2009-11-12 12:49:14 -0600 | [diff] [blame] | 703 | static DEVICE_ATTR(rev, S_IRUGO, dev_show_rev, NULL); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 704 | |
Stephen M. Cameron | ce84a8a | 2009-09-17 13:48:10 -0500 | [diff] [blame] | 705 | static ssize_t cciss_show_lunid(struct device *dev, |
| 706 | struct device_attribute *attr, char *buf) |
| 707 | { |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 708 | drive_info_struct *drv = to_drv(dev); |
| 709 | struct ctlr_info *h = to_hba(drv->dev.parent); |
Stephen M. Cameron | ce84a8a | 2009-09-17 13:48:10 -0500 | [diff] [blame] | 710 | unsigned long flags; |
| 711 | unsigned char lunid[8]; |
| 712 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 713 | spin_lock_irqsave(&h->lock, flags); |
Stephen M. Cameron | ce84a8a | 2009-09-17 13:48:10 -0500 | [diff] [blame] | 714 | if (h->busy_configuring) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 715 | spin_unlock_irqrestore(&h->lock, flags); |
Stephen M. Cameron | ce84a8a | 2009-09-17 13:48:10 -0500 | [diff] [blame] | 716 | return -EBUSY; |
| 717 | } |
| 718 | if (!drv->heads) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 719 | spin_unlock_irqrestore(&h->lock, flags); |
Stephen M. Cameron | ce84a8a | 2009-09-17 13:48:10 -0500 | [diff] [blame] | 720 | return -ENOTTY; |
| 721 | } |
| 722 | memcpy(lunid, drv->LunID, sizeof(lunid)); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 723 | spin_unlock_irqrestore(&h->lock, flags); |
Stephen M. Cameron | ce84a8a | 2009-09-17 13:48:10 -0500 | [diff] [blame] | 724 | return snprintf(buf, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n", |
| 725 | lunid[0], lunid[1], lunid[2], lunid[3], |
| 726 | lunid[4], lunid[5], lunid[6], lunid[7]); |
| 727 | } |
Alex Chiang | 8ba95c6 | 2009-11-12 12:49:14 -0600 | [diff] [blame] | 728 | static DEVICE_ATTR(lunid, S_IRUGO, cciss_show_lunid, NULL); |
Stephen M. Cameron | ce84a8a | 2009-09-17 13:48:10 -0500 | [diff] [blame] | 729 | |
Stephen M. Cameron | 3ff1111 | 2009-09-17 13:48:21 -0500 | [diff] [blame] | 730 | static ssize_t cciss_show_raid_level(struct device *dev, |
| 731 | struct device_attribute *attr, char *buf) |
| 732 | { |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 733 | drive_info_struct *drv = to_drv(dev); |
| 734 | struct ctlr_info *h = to_hba(drv->dev.parent); |
Stephen M. Cameron | 3ff1111 | 2009-09-17 13:48:21 -0500 | [diff] [blame] | 735 | int raid; |
| 736 | unsigned long flags; |
| 737 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 738 | spin_lock_irqsave(&h->lock, flags); |
Stephen M. Cameron | 3ff1111 | 2009-09-17 13:48:21 -0500 | [diff] [blame] | 739 | if (h->busy_configuring) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 740 | spin_unlock_irqrestore(&h->lock, flags); |
Stephen M. Cameron | 3ff1111 | 2009-09-17 13:48:21 -0500 | [diff] [blame] | 741 | return -EBUSY; |
| 742 | } |
| 743 | raid = drv->raid_level; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 744 | spin_unlock_irqrestore(&h->lock, flags); |
Stephen M. Cameron | 3ff1111 | 2009-09-17 13:48:21 -0500 | [diff] [blame] | 745 | if (raid < 0 || raid > RAID_UNKNOWN) |
| 746 | raid = RAID_UNKNOWN; |
| 747 | |
| 748 | return snprintf(buf, strlen(raid_label[raid]) + 7, "RAID %s\n", |
| 749 | raid_label[raid]); |
| 750 | } |
Alex Chiang | 8ba95c6 | 2009-11-12 12:49:14 -0600 | [diff] [blame] | 751 | 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] | 752 | |
Stephen M. Cameron | e272afe | 2009-09-17 13:48:26 -0500 | [diff] [blame] | 753 | static ssize_t cciss_show_usage_count(struct device *dev, |
| 754 | struct device_attribute *attr, char *buf) |
| 755 | { |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 756 | drive_info_struct *drv = to_drv(dev); |
| 757 | struct ctlr_info *h = to_hba(drv->dev.parent); |
Stephen M. Cameron | e272afe | 2009-09-17 13:48:26 -0500 | [diff] [blame] | 758 | unsigned long flags; |
| 759 | int count; |
| 760 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 761 | spin_lock_irqsave(&h->lock, flags); |
Stephen M. Cameron | e272afe | 2009-09-17 13:48:26 -0500 | [diff] [blame] | 762 | if (h->busy_configuring) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 763 | spin_unlock_irqrestore(&h->lock, flags); |
Stephen M. Cameron | e272afe | 2009-09-17 13:48:26 -0500 | [diff] [blame] | 764 | return -EBUSY; |
| 765 | } |
| 766 | count = drv->usage_count; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 767 | spin_unlock_irqrestore(&h->lock, flags); |
Stephen M. Cameron | e272afe | 2009-09-17 13:48:26 -0500 | [diff] [blame] | 768 | return snprintf(buf, 20, "%d\n", count); |
| 769 | } |
Alex Chiang | 8ba95c6 | 2009-11-12 12:49:14 -0600 | [diff] [blame] | 770 | 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] | 771 | |
Andrew Patterson | d6f4965 | 2009-09-17 13:47:03 -0500 | [diff] [blame] | 772 | static struct attribute *cciss_host_attrs[] = { |
| 773 | &dev_attr_rescan.attr, |
| 774 | NULL |
| 775 | }; |
| 776 | |
| 777 | static struct attribute_group cciss_host_attr_group = { |
| 778 | .attrs = cciss_host_attrs, |
| 779 | }; |
| 780 | |
Jens Axboe | 9f792d9 | 2009-09-18 22:24:21 +0200 | [diff] [blame] | 781 | static const struct attribute_group *cciss_host_attr_groups[] = { |
Andrew Patterson | d6f4965 | 2009-09-17 13:47:03 -0500 | [diff] [blame] | 782 | &cciss_host_attr_group, |
| 783 | NULL |
| 784 | }; |
| 785 | |
| 786 | static struct device_type cciss_host_type = { |
| 787 | .name = "cciss_host", |
| 788 | .groups = cciss_host_attr_groups, |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 789 | .release = cciss_hba_release, |
Andrew Patterson | d6f4965 | 2009-09-17 13:47:03 -0500 | [diff] [blame] | 790 | }; |
| 791 | |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 792 | static struct attribute *cciss_dev_attrs[] = { |
| 793 | &dev_attr_unique_id.attr, |
| 794 | &dev_attr_model.attr, |
| 795 | &dev_attr_vendor.attr, |
| 796 | &dev_attr_rev.attr, |
Stephen M. Cameron | ce84a8a | 2009-09-17 13:48:10 -0500 | [diff] [blame] | 797 | &dev_attr_lunid.attr, |
Stephen M. Cameron | 3ff1111 | 2009-09-17 13:48:21 -0500 | [diff] [blame] | 798 | &dev_attr_raid_level.attr, |
Stephen M. Cameron | e272afe | 2009-09-17 13:48:26 -0500 | [diff] [blame] | 799 | &dev_attr_usage_count.attr, |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 800 | NULL |
| 801 | }; |
| 802 | |
| 803 | static struct attribute_group cciss_dev_attr_group = { |
| 804 | .attrs = cciss_dev_attrs, |
| 805 | }; |
| 806 | |
David Brownell | a4dbd67 | 2009-06-24 10:06:31 -0700 | [diff] [blame] | 807 | static const struct attribute_group *cciss_dev_attr_groups[] = { |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 808 | &cciss_dev_attr_group, |
| 809 | NULL |
| 810 | }; |
| 811 | |
| 812 | static struct device_type cciss_dev_type = { |
| 813 | .name = "cciss_device", |
| 814 | .groups = cciss_dev_attr_groups, |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 815 | .release = cciss_device_release, |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 816 | }; |
| 817 | |
| 818 | static struct bus_type cciss_bus_type = { |
| 819 | .name = "cciss", |
| 820 | }; |
| 821 | |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 822 | /* |
| 823 | * cciss_hba_release is called when the reference count |
| 824 | * of h->dev goes to zero. |
| 825 | */ |
| 826 | static void cciss_hba_release(struct device *dev) |
| 827 | { |
| 828 | /* |
| 829 | * nothing to do, but need this to avoid a warning |
| 830 | * about not having a release handler from lib/kref.c. |
| 831 | */ |
| 832 | } |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 833 | |
| 834 | /* |
| 835 | * Initialize sysfs entry for each controller. This sets up and registers |
| 836 | * the 'cciss#' directory for each individual controller under |
| 837 | * /sys/bus/pci/devices/<dev>/. |
| 838 | */ |
| 839 | static int cciss_create_hba_sysfs_entry(struct ctlr_info *h) |
| 840 | { |
| 841 | device_initialize(&h->dev); |
| 842 | h->dev.type = &cciss_host_type; |
| 843 | h->dev.bus = &cciss_bus_type; |
| 844 | dev_set_name(&h->dev, "%s", h->devname); |
| 845 | h->dev.parent = &h->pdev->dev; |
| 846 | |
| 847 | return device_add(&h->dev); |
| 848 | } |
| 849 | |
| 850 | /* |
| 851 | * Remove sysfs entries for an hba. |
| 852 | */ |
| 853 | static void cciss_destroy_hba_sysfs_entry(struct ctlr_info *h) |
| 854 | { |
| 855 | device_del(&h->dev); |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 856 | put_device(&h->dev); /* final put. */ |
| 857 | } |
| 858 | |
| 859 | /* cciss_device_release is called when the reference count |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 860 | * of h->drv[x]dev goes to zero. |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 861 | */ |
| 862 | static void cciss_device_release(struct device *dev) |
| 863 | { |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 864 | drive_info_struct *drv = to_drv(dev); |
| 865 | kfree(drv); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 866 | } |
| 867 | |
| 868 | /* |
| 869 | * Initialize sysfs for each logical drive. This sets up and registers |
| 870 | * the 'c#d#' directory for each individual logical drive under |
| 871 | * /sys/bus/pci/devices/<dev/ccis#/. We also create a link from |
| 872 | * /sys/block/cciss!c#d# to this entry. |
| 873 | */ |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 874 | static long cciss_create_ld_sysfs_entry(struct ctlr_info *h, |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 875 | int drv_index) |
| 876 | { |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 877 | struct device *dev; |
| 878 | |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 879 | if (h->drv[drv_index]->device_initialized) |
Stephen M. Cameron | 8ce5196 | 2009-09-17 13:47:34 -0500 | [diff] [blame] | 880 | return 0; |
| 881 | |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 882 | dev = &h->drv[drv_index]->dev; |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 883 | device_initialize(dev); |
| 884 | dev->type = &cciss_dev_type; |
| 885 | dev->bus = &cciss_bus_type; |
| 886 | dev_set_name(dev, "c%dd%d", h->ctlr, drv_index); |
| 887 | dev->parent = &h->dev; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 888 | h->drv[drv_index]->device_initialized = 1; |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 889 | return device_add(dev); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 890 | } |
| 891 | |
| 892 | /* |
| 893 | * Remove sysfs entries for a logical drive. |
| 894 | */ |
Stephen M. Cameron | 8ce5196 | 2009-09-17 13:47:34 -0500 | [diff] [blame] | 895 | static void cciss_destroy_ld_sysfs_entry(struct ctlr_info *h, int drv_index, |
| 896 | int ctlr_exiting) |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 897 | { |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 898 | struct device *dev = &h->drv[drv_index]->dev; |
Stephen M. Cameron | 8ce5196 | 2009-09-17 13:47:34 -0500 | [diff] [blame] | 899 | |
| 900 | /* special case for c*d0, we only destroy it on controller exit */ |
| 901 | if (drv_index == 0 && !ctlr_exiting) |
| 902 | return; |
| 903 | |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 904 | device_del(dev); |
| 905 | put_device(dev); /* the "final" put. */ |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 906 | h->drv[drv_index] = NULL; |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 907 | } |
| 908 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 909 | /* |
| 910 | * For operations that cannot sleep, a command block is allocated at init, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 911 | * 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] | 912 | * which ones are free or in use. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 913 | */ |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 914 | static CommandList_struct *cmd_alloc(ctlr_info_t *h) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 915 | { |
| 916 | CommandList_struct *c; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 917 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 918 | u64bit temp64; |
| 919 | dma_addr_t cmd_dma_handle, err_dma_handle; |
| 920 | |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 921 | do { |
| 922 | i = find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds); |
| 923 | if (i == h->nr_cmds) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 924 | return NULL; |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 925 | } while (test_and_set_bit(i & (BITS_PER_LONG - 1), |
| 926 | h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0); |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 927 | c = h->cmd_pool + i; |
| 928 | memset(c, 0, sizeof(CommandList_struct)); |
| 929 | cmd_dma_handle = h->cmd_pool_dhandle + i * sizeof(CommandList_struct); |
| 930 | c->err_info = h->errinfo_pool + i; |
| 931 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); |
| 932 | err_dma_handle = h->errinfo_pool_dhandle |
| 933 | + i * sizeof(ErrorInfo_struct); |
| 934 | h->nr_allocs++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 935 | |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 936 | c->cmdindex = i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 937 | |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 938 | INIT_HLIST_NODE(&c->list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 939 | c->busaddr = (__u32) cmd_dma_handle; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 940 | temp64.val = (__u64) err_dma_handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 941 | c->ErrDesc.Addr.lower = temp64.val32.lower; |
| 942 | c->ErrDesc.Addr.upper = temp64.val32.upper; |
| 943 | c->ErrDesc.Len = sizeof(ErrorInfo_struct); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 944 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 945 | c->ctlr = h->ctlr; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 946 | return c; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 947 | } |
| 948 | |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 949 | /* allocate a command using pci_alloc_consistent, used for ioctls, |
| 950 | * etc., not for the main i/o path. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 951 | */ |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 952 | static CommandList_struct *cmd_special_alloc(ctlr_info_t *h) |
| 953 | { |
| 954 | CommandList_struct *c; |
| 955 | u64bit temp64; |
| 956 | dma_addr_t cmd_dma_handle, err_dma_handle; |
| 957 | |
| 958 | c = (CommandList_struct *) pci_alloc_consistent(h->pdev, |
| 959 | sizeof(CommandList_struct), &cmd_dma_handle); |
| 960 | if (c == NULL) |
| 961 | return NULL; |
| 962 | memset(c, 0, sizeof(CommandList_struct)); |
| 963 | |
| 964 | c->cmdindex = -1; |
| 965 | |
| 966 | c->err_info = (ErrorInfo_struct *) |
| 967 | pci_alloc_consistent(h->pdev, sizeof(ErrorInfo_struct), |
| 968 | &err_dma_handle); |
| 969 | |
| 970 | if (c->err_info == NULL) { |
| 971 | pci_free_consistent(h->pdev, |
| 972 | sizeof(CommandList_struct), c, cmd_dma_handle); |
| 973 | return NULL; |
| 974 | } |
| 975 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); |
| 976 | |
| 977 | INIT_HLIST_NODE(&c->list); |
| 978 | c->busaddr = (__u32) cmd_dma_handle; |
| 979 | temp64.val = (__u64) err_dma_handle; |
| 980 | c->ErrDesc.Addr.lower = temp64.val32.lower; |
| 981 | c->ErrDesc.Addr.upper = temp64.val32.upper; |
| 982 | c->ErrDesc.Len = sizeof(ErrorInfo_struct); |
| 983 | |
| 984 | c->ctlr = h->ctlr; |
| 985 | return c; |
| 986 | } |
| 987 | |
| 988 | static void cmd_free(ctlr_info_t *h, CommandList_struct *c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 989 | { |
| 990 | int i; |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 991 | |
| 992 | i = c - h->cmd_pool; |
| 993 | clear_bit(i & (BITS_PER_LONG - 1), |
| 994 | h->cmd_pool_bits + (i / BITS_PER_LONG)); |
| 995 | h->nr_frees++; |
| 996 | } |
| 997 | |
| 998 | static void cmd_special_free(ctlr_info_t *h, CommandList_struct *c) |
| 999 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1000 | u64bit temp64; |
| 1001 | |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 1002 | temp64.val32.lower = c->ErrDesc.Addr.lower; |
| 1003 | temp64.val32.upper = c->ErrDesc.Addr.upper; |
| 1004 | pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct), |
| 1005 | c->err_info, (dma_addr_t) temp64.val); |
| 1006 | pci_free_consistent(h->pdev, sizeof(CommandList_struct), |
| 1007 | c, (dma_addr_t) c->busaddr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1008 | } |
| 1009 | |
| 1010 | static inline ctlr_info_t *get_host(struct gendisk *disk) |
| 1011 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1012 | return disk->queue->queuedata; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1013 | } |
| 1014 | |
| 1015 | static inline drive_info_struct *get_drv(struct gendisk *disk) |
| 1016 | { |
| 1017 | return disk->private_data; |
| 1018 | } |
| 1019 | |
| 1020 | /* |
| 1021 | * Open. Make sure the device is really there. |
| 1022 | */ |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1023 | static int cciss_open(struct block_device *bdev, fmode_t mode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1024 | { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1025 | ctlr_info_t *h = get_host(bdev->bd_disk); |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1026 | drive_info_struct *drv = get_drv(bdev->bd_disk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1027 | |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 1028 | 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] | 1029 | if (drv->busy_configuring) |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1030 | return -EBUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1031 | /* |
| 1032 | * Root is allowed to open raw volume zero even if it's not configured |
| 1033 | * so array config can still work. Root is also allowed to open any |
| 1034 | * volume that has a LUN ID, so it can issue IOCTL to reread the |
| 1035 | * disk information. I don't think I really like this |
| 1036 | * but I'm already using way to many device nodes to claim another one |
| 1037 | * for "raw controller". |
| 1038 | */ |
Mike Miller | 7a06f78 | 2006-12-06 20:35:08 -0800 | [diff] [blame] | 1039 | if (drv->heads == 0) { |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1040 | if (MINOR(bdev->bd_dev) != 0) { /* not node 0? */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1041 | /* if not node 0 make sure it is a partition = 0 */ |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1042 | if (MINOR(bdev->bd_dev) & 0x0f) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1043 | return -ENXIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1044 | /* if it is, make sure we have a LUN ID */ |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 1045 | } else if (memcmp(drv->LunID, CTLR_LUNID, |
| 1046 | sizeof(drv->LunID))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1047 | return -ENXIO; |
| 1048 | } |
| 1049 | } |
| 1050 | if (!capable(CAP_SYS_ADMIN)) |
| 1051 | return -EPERM; |
| 1052 | } |
| 1053 | drv->usage_count++; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1054 | h->usage_count++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1055 | return 0; |
| 1056 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1057 | |
Arnd Bergmann | 6e9624b | 2010-08-07 18:25:34 +0200 | [diff] [blame] | 1058 | static int cciss_unlocked_open(struct block_device *bdev, fmode_t mode) |
| 1059 | { |
| 1060 | int ret; |
| 1061 | |
| 1062 | lock_kernel(); |
| 1063 | ret = cciss_open(bdev, mode); |
| 1064 | unlock_kernel(); |
| 1065 | |
| 1066 | return ret; |
| 1067 | } |
| 1068 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1069 | /* |
| 1070 | * Close. Sync first. |
| 1071 | */ |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1072 | static int cciss_release(struct gendisk *disk, fmode_t mode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1073 | { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1074 | ctlr_info_t *h; |
Arnd Bergmann | 6e9624b | 2010-08-07 18:25:34 +0200 | [diff] [blame] | 1075 | drive_info_struct *drv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1076 | |
Arnd Bergmann | 6e9624b | 2010-08-07 18:25:34 +0200 | [diff] [blame] | 1077 | lock_kernel(); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1078 | h = get_host(disk); |
Arnd Bergmann | 6e9624b | 2010-08-07 18:25:34 +0200 | [diff] [blame] | 1079 | drv = get_drv(disk); |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 1080 | dev_dbg(&h->pdev->dev, "cciss_release %s\n", disk->disk_name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1081 | drv->usage_count--; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1082 | h->usage_count--; |
Arnd Bergmann | 6e9624b | 2010-08-07 18:25:34 +0200 | [diff] [blame] | 1083 | unlock_kernel(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1084 | return 0; |
| 1085 | } |
| 1086 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1087 | static int do_ioctl(struct block_device *bdev, fmode_t mode, |
| 1088 | unsigned cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1089 | { |
| 1090 | int ret; |
| 1091 | lock_kernel(); |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1092 | ret = cciss_ioctl(bdev, mode, cmd, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1093 | unlock_kernel(); |
| 1094 | return ret; |
| 1095 | } |
| 1096 | |
Arnd Bergmann | 8a6cfeb | 2010-07-08 10:18:46 +0200 | [diff] [blame] | 1097 | #ifdef CONFIG_COMPAT |
| 1098 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1099 | static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode, |
| 1100 | unsigned cmd, unsigned long arg); |
| 1101 | static int cciss_ioctl32_big_passthru(struct block_device *bdev, fmode_t mode, |
| 1102 | unsigned cmd, unsigned long arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1103 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1104 | static int cciss_compat_ioctl(struct block_device *bdev, fmode_t mode, |
| 1105 | unsigned cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1106 | { |
| 1107 | switch (cmd) { |
| 1108 | case CCISS_GETPCIINFO: |
| 1109 | case CCISS_GETINTINFO: |
| 1110 | case CCISS_SETINTINFO: |
| 1111 | case CCISS_GETNODENAME: |
| 1112 | case CCISS_SETNODENAME: |
| 1113 | case CCISS_GETHEARTBEAT: |
| 1114 | case CCISS_GETBUSTYPES: |
| 1115 | case CCISS_GETFIRMVER: |
| 1116 | case CCISS_GETDRIVVER: |
| 1117 | case CCISS_REVALIDVOLS: |
| 1118 | case CCISS_DEREGDISK: |
| 1119 | case CCISS_REGNEWDISK: |
| 1120 | case CCISS_REGNEWD: |
| 1121 | case CCISS_RESCANDISK: |
| 1122 | case CCISS_GETLUNINFO: |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1123 | return do_ioctl(bdev, mode, cmd, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1124 | |
| 1125 | case CCISS_PASSTHRU32: |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1126 | return cciss_ioctl32_passthru(bdev, mode, cmd, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1127 | case CCISS_BIG_PASSTHRU32: |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1128 | return cciss_ioctl32_big_passthru(bdev, mode, cmd, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1129 | |
| 1130 | default: |
| 1131 | return -ENOIOCTLCMD; |
| 1132 | } |
| 1133 | } |
| 1134 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1135 | static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode, |
| 1136 | unsigned cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1137 | { |
| 1138 | IOCTL32_Command_struct __user *arg32 = |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1139 | (IOCTL32_Command_struct __user *) arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1140 | IOCTL_Command_struct arg64; |
| 1141 | IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64)); |
| 1142 | int err; |
| 1143 | u32 cp; |
| 1144 | |
| 1145 | err = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1146 | err |= |
| 1147 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, |
| 1148 | sizeof(arg64.LUN_info)); |
| 1149 | err |= |
| 1150 | copy_from_user(&arg64.Request, &arg32->Request, |
| 1151 | sizeof(arg64.Request)); |
| 1152 | err |= |
| 1153 | copy_from_user(&arg64.error_info, &arg32->error_info, |
| 1154 | sizeof(arg64.error_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1155 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
| 1156 | err |= get_user(cp, &arg32->buf); |
| 1157 | arg64.buf = compat_ptr(cp); |
| 1158 | err |= copy_to_user(p, &arg64, sizeof(arg64)); |
| 1159 | |
| 1160 | if (err) |
| 1161 | return -EFAULT; |
| 1162 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1163 | err = do_ioctl(bdev, mode, CCISS_PASSTHRU, (unsigned long)p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1164 | if (err) |
| 1165 | return err; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1166 | err |= |
| 1167 | copy_in_user(&arg32->error_info, &p->error_info, |
| 1168 | sizeof(arg32->error_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1169 | if (err) |
| 1170 | return -EFAULT; |
| 1171 | return err; |
| 1172 | } |
| 1173 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1174 | static int cciss_ioctl32_big_passthru(struct block_device *bdev, fmode_t mode, |
| 1175 | unsigned cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1176 | { |
| 1177 | BIG_IOCTL32_Command_struct __user *arg32 = |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1178 | (BIG_IOCTL32_Command_struct __user *) arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1179 | BIG_IOCTL_Command_struct arg64; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1180 | BIG_IOCTL_Command_struct __user *p = |
| 1181 | compat_alloc_user_space(sizeof(arg64)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1182 | int err; |
| 1183 | u32 cp; |
| 1184 | |
| 1185 | err = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1186 | err |= |
| 1187 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, |
| 1188 | sizeof(arg64.LUN_info)); |
| 1189 | err |= |
| 1190 | copy_from_user(&arg64.Request, &arg32->Request, |
| 1191 | sizeof(arg64.Request)); |
| 1192 | err |= |
| 1193 | copy_from_user(&arg64.error_info, &arg32->error_info, |
| 1194 | sizeof(arg64.error_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1195 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
| 1196 | err |= get_user(arg64.malloc_size, &arg32->malloc_size); |
| 1197 | err |= get_user(cp, &arg32->buf); |
| 1198 | arg64.buf = compat_ptr(cp); |
| 1199 | err |= copy_to_user(p, &arg64, sizeof(arg64)); |
| 1200 | |
| 1201 | if (err) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1202 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1203 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1204 | err = do_ioctl(bdev, mode, CCISS_BIG_PASSTHRU, (unsigned long)p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1205 | if (err) |
| 1206 | return err; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1207 | err |= |
| 1208 | copy_in_user(&arg32->error_info, &p->error_info, |
| 1209 | sizeof(arg32->error_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1210 | if (err) |
| 1211 | return -EFAULT; |
| 1212 | return err; |
| 1213 | } |
| 1214 | #endif |
Christoph Hellwig | a885c8c | 2006-01-08 01:02:50 -0800 | [diff] [blame] | 1215 | |
| 1216 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo) |
| 1217 | { |
| 1218 | drive_info_struct *drv = get_drv(bdev->bd_disk); |
| 1219 | |
| 1220 | if (!drv->cylinders) |
| 1221 | return -ENXIO; |
| 1222 | |
| 1223 | geo->heads = drv->heads; |
| 1224 | geo->sectors = drv->sectors; |
| 1225 | geo->cylinders = drv->cylinders; |
| 1226 | return 0; |
| 1227 | } |
| 1228 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1229 | 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] | 1230 | { |
| 1231 | if (c->err_info->CommandStatus == CMD_TARGET_STATUS && |
| 1232 | c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1233 | (void)check_for_unit_attention(h, c); |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 1234 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1235 | /* |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1236 | * ioctl |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1237 | */ |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1238 | static int cciss_ioctl(struct block_device *bdev, fmode_t mode, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1239 | unsigned int cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1240 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1241 | struct gendisk *disk = bdev->bd_disk; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1242 | ctlr_info_t *h = get_host(disk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1243 | drive_info_struct *drv = get_drv(disk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1244 | void __user *argp = (void __user *)arg; |
| 1245 | |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 1246 | dev_dbg(&h->pdev->dev, "cciss_ioctl: Called with cmd=%x %lx\n", |
| 1247 | cmd, arg); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1248 | switch (cmd) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1249 | case CCISS_GETPCIINFO: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1250 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1251 | cciss_pci_info_struct pciinfo; |
| 1252 | |
| 1253 | if (!arg) |
| 1254 | return -EINVAL; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1255 | pciinfo.domain = pci_domain_nr(h->pdev->bus); |
| 1256 | pciinfo.bus = h->pdev->bus->number; |
| 1257 | pciinfo.dev_fn = h->pdev->devfn; |
| 1258 | pciinfo.board_id = h->board_id; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1259 | if (copy_to_user |
| 1260 | (argp, &pciinfo, sizeof(cciss_pci_info_struct))) |
| 1261 | return -EFAULT; |
| 1262 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1263 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1264 | case CCISS_GETINTINFO: |
| 1265 | { |
| 1266 | cciss_coalint_struct intinfo; |
| 1267 | if (!arg) |
| 1268 | return -EINVAL; |
| 1269 | intinfo.delay = |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1270 | readl(&h->cfgtable->HostWrite.CoalIntDelay); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1271 | intinfo.count = |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1272 | readl(&h->cfgtable->HostWrite.CoalIntCount); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1273 | if (copy_to_user |
| 1274 | (argp, &intinfo, sizeof(cciss_coalint_struct))) |
| 1275 | return -EFAULT; |
| 1276 | return 0; |
| 1277 | } |
| 1278 | case CCISS_SETINTINFO: |
| 1279 | { |
| 1280 | cciss_coalint_struct intinfo; |
| 1281 | unsigned long flags; |
| 1282 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1283 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1284 | if (!arg) |
| 1285 | return -EINVAL; |
| 1286 | if (!capable(CAP_SYS_ADMIN)) |
| 1287 | return -EPERM; |
| 1288 | if (copy_from_user |
| 1289 | (&intinfo, argp, sizeof(cciss_coalint_struct))) |
| 1290 | return -EFAULT; |
| 1291 | if ((intinfo.delay == 0) && (intinfo.count == 0)) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1292 | return -EINVAL; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1293 | spin_lock_irqsave(&h->lock, flags); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1294 | /* Update the field, and then ring the doorbell */ |
| 1295 | writel(intinfo.delay, |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1296 | &(h->cfgtable->HostWrite.CoalIntDelay)); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1297 | writel(intinfo.count, |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1298 | &(h->cfgtable->HostWrite.CoalIntCount)); |
| 1299 | writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1300 | |
| 1301 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1302 | if (!(readl(h->vaddr + SA5_DOORBELL) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1303 | & CFGTBL_ChangeReq)) |
| 1304 | break; |
| 1305 | /* delay and try again */ |
| 1306 | udelay(1000); |
| 1307 | } |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1308 | spin_unlock_irqrestore(&h->lock, flags); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1309 | if (i >= MAX_IOCTL_CONFIG_WAIT) |
| 1310 | return -EAGAIN; |
| 1311 | return 0; |
| 1312 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1313 | case CCISS_GETNODENAME: |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1314 | { |
| 1315 | NodeName_type NodeName; |
| 1316 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1317 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1318 | if (!arg) |
| 1319 | return -EINVAL; |
| 1320 | for (i = 0; i < 16; i++) |
| 1321 | NodeName[i] = |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1322 | readb(&h->cfgtable->ServerName[i]); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1323 | if (copy_to_user(argp, NodeName, sizeof(NodeName_type))) |
| 1324 | return -EFAULT; |
| 1325 | return 0; |
| 1326 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1327 | case CCISS_SETNODENAME: |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1328 | { |
| 1329 | NodeName_type NodeName; |
| 1330 | unsigned long flags; |
| 1331 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1332 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1333 | if (!arg) |
| 1334 | return -EINVAL; |
| 1335 | if (!capable(CAP_SYS_ADMIN)) |
| 1336 | return -EPERM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1337 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1338 | if (copy_from_user |
| 1339 | (NodeName, argp, sizeof(NodeName_type))) |
| 1340 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1341 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1342 | spin_lock_irqsave(&h->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1343 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1344 | /* Update the field, and then ring the doorbell */ |
| 1345 | for (i = 0; i < 16; i++) |
| 1346 | writeb(NodeName[i], |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1347 | &h->cfgtable->ServerName[i]); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1348 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1349 | writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1350 | |
| 1351 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1352 | if (!(readl(h->vaddr + SA5_DOORBELL) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1353 | & CFGTBL_ChangeReq)) |
| 1354 | break; |
| 1355 | /* delay and try again */ |
| 1356 | udelay(1000); |
| 1357 | } |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1358 | spin_unlock_irqrestore(&h->lock, flags); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1359 | if (i >= MAX_IOCTL_CONFIG_WAIT) |
| 1360 | return -EAGAIN; |
| 1361 | return 0; |
| 1362 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1363 | |
| 1364 | case CCISS_GETHEARTBEAT: |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1365 | { |
| 1366 | Heartbeat_type heartbeat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1367 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1368 | if (!arg) |
| 1369 | return -EINVAL; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1370 | heartbeat = readl(&h->cfgtable->HeartBeat); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1371 | if (copy_to_user |
| 1372 | (argp, &heartbeat, sizeof(Heartbeat_type))) |
| 1373 | return -EFAULT; |
| 1374 | return 0; |
| 1375 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1376 | case CCISS_GETBUSTYPES: |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1377 | { |
| 1378 | BusTypes_type BusTypes; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1379 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1380 | if (!arg) |
| 1381 | return -EINVAL; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1382 | BusTypes = readl(&h->cfgtable->BusTypes); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1383 | if (copy_to_user |
| 1384 | (argp, &BusTypes, sizeof(BusTypes_type))) |
| 1385 | return -EFAULT; |
| 1386 | return 0; |
| 1387 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1388 | case CCISS_GETFIRMVER: |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1389 | { |
| 1390 | FirmwareVer_type firmware; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1391 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1392 | if (!arg) |
| 1393 | return -EINVAL; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1394 | memcpy(firmware, h->firm_ver, 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1395 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1396 | if (copy_to_user |
| 1397 | (argp, firmware, sizeof(FirmwareVer_type))) |
| 1398 | return -EFAULT; |
| 1399 | return 0; |
| 1400 | } |
| 1401 | case CCISS_GETDRIVVER: |
| 1402 | { |
| 1403 | DriverVer_type DriverVer = DRIVER_VERSION; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1404 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1405 | if (!arg) |
| 1406 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1407 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1408 | if (copy_to_user |
| 1409 | (argp, &DriverVer, sizeof(DriverVer_type))) |
| 1410 | return -EFAULT; |
| 1411 | return 0; |
| 1412 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1413 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1414 | case CCISS_DEREGDISK: |
| 1415 | case CCISS_REGNEWD: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1416 | case CCISS_REVALIDVOLS: |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1417 | return rebuild_lun_table(h, 0, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1418 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1419 | case CCISS_GETLUNINFO:{ |
| 1420 | LogvolInfo_struct luninfo; |
| 1421 | |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 1422 | memcpy(&luninfo.LunID, drv->LunID, |
| 1423 | sizeof(luninfo.LunID)); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1424 | luninfo.num_opens = drv->usage_count; |
| 1425 | luninfo.num_parts = 0; |
| 1426 | if (copy_to_user(argp, &luninfo, |
| 1427 | sizeof(LogvolInfo_struct))) |
| 1428 | return -EFAULT; |
| 1429 | return 0; |
| 1430 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1431 | case CCISS_PASSTHRU: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1432 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1433 | IOCTL_Command_struct iocommand; |
| 1434 | CommandList_struct *c; |
| 1435 | char *buff = NULL; |
| 1436 | u64bit temp64; |
Peter Zijlstra | 6e9a473 | 2006-09-30 23:28:10 -0700 | [diff] [blame] | 1437 | DECLARE_COMPLETION_ONSTACK(wait); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1438 | |
| 1439 | if (!arg) |
| 1440 | return -EINVAL; |
| 1441 | |
| 1442 | if (!capable(CAP_SYS_RAWIO)) |
| 1443 | return -EPERM; |
| 1444 | |
| 1445 | if (copy_from_user |
| 1446 | (&iocommand, argp, sizeof(IOCTL_Command_struct))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1447 | return -EFAULT; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1448 | if ((iocommand.buf_size < 1) && |
| 1449 | (iocommand.Request.Type.Direction != XFER_NONE)) { |
| 1450 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1451 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1452 | #if 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */ |
| 1453 | /* Check kmalloc limits */ |
| 1454 | if (iocommand.buf_size > 128000) |
| 1455 | return -EINVAL; |
| 1456 | #endif |
| 1457 | if (iocommand.buf_size > 0) { |
| 1458 | buff = kmalloc(iocommand.buf_size, GFP_KERNEL); |
| 1459 | if (buff == NULL) |
| 1460 | return -EFAULT; |
| 1461 | } |
| 1462 | if (iocommand.Request.Type.Direction == XFER_WRITE) { |
| 1463 | /* Copy the data into the buffer we created */ |
| 1464 | if (copy_from_user |
| 1465 | (buff, iocommand.buf, iocommand.buf_size)) { |
| 1466 | kfree(buff); |
| 1467 | return -EFAULT; |
| 1468 | } |
| 1469 | } else { |
| 1470 | memset(buff, 0, iocommand.buf_size); |
| 1471 | } |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 1472 | c = cmd_special_alloc(h); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1473 | if (!c) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1474 | kfree(buff); |
| 1475 | return -ENOMEM; |
| 1476 | } |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 1477 | /* Fill in the command type */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1478 | c->cmd_type = CMD_IOCTL_PEND; |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 1479 | /* Fill in Command Header */ |
| 1480 | c->Header.ReplyQueue = 0; /* unused in simple mode */ |
| 1481 | if (iocommand.buf_size > 0) /* buffer to fill */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1482 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1483 | c->Header.SGList = 1; |
| 1484 | c->Header.SGTotal = 1; |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 1485 | } else /* no buffers to fill */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1486 | { |
| 1487 | c->Header.SGList = 0; |
| 1488 | c->Header.SGTotal = 0; |
| 1489 | } |
| 1490 | c->Header.LUN = iocommand.LUN_info; |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 1491 | /* use the kernel address the cmd block for tag */ |
| 1492 | c->Header.Tag.lower = c->busaddr; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1493 | |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 1494 | /* Fill in Request block */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1495 | c->Request = iocommand.Request; |
| 1496 | |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 1497 | /* Fill in the scatter gather information */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1498 | if (iocommand.buf_size > 0) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1499 | temp64.val = pci_map_single(h->pdev, buff, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1500 | iocommand.buf_size, |
| 1501 | PCI_DMA_BIDIRECTIONAL); |
| 1502 | c->SG[0].Addr.lower = temp64.val32.lower; |
| 1503 | c->SG[0].Addr.upper = temp64.val32.upper; |
| 1504 | c->SG[0].Len = iocommand.buf_size; |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 1505 | c->SG[0].Ext = 0; /* we are not chaining */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1506 | } |
| 1507 | c->waiting = &wait; |
| 1508 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1509 | enqueue_cmd_and_start_io(h, c); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1510 | wait_for_completion(&wait); |
| 1511 | |
| 1512 | /* unlock the buffers from DMA */ |
| 1513 | temp64.val32.lower = c->SG[0].Addr.lower; |
| 1514 | temp64.val32.upper = c->SG[0].Addr.upper; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1515 | pci_unmap_single(h->pdev, (dma_addr_t) temp64.val, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1516 | iocommand.buf_size, |
| 1517 | PCI_DMA_BIDIRECTIONAL); |
| 1518 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1519 | check_ioctl_unit_attention(h, c); |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 1520 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1521 | /* Copy the error information out */ |
| 1522 | iocommand.error_info = *(c->err_info); |
| 1523 | if (copy_to_user |
| 1524 | (argp, &iocommand, sizeof(IOCTL_Command_struct))) { |
| 1525 | kfree(buff); |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 1526 | cmd_special_free(h, c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1527 | return -EFAULT; |
| 1528 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1529 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1530 | if (iocommand.Request.Type.Direction == XFER_READ) { |
| 1531 | /* Copy the data out of the buffer we created */ |
| 1532 | if (copy_to_user |
| 1533 | (iocommand.buf, buff, iocommand.buf_size)) { |
| 1534 | kfree(buff); |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 1535 | cmd_special_free(h, c); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1536 | return -EFAULT; |
| 1537 | } |
| 1538 | } |
| 1539 | kfree(buff); |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 1540 | cmd_special_free(h, c); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1541 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1542 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1543 | case CCISS_BIG_PASSTHRU:{ |
| 1544 | BIG_IOCTL_Command_struct *ioc; |
| 1545 | CommandList_struct *c; |
| 1546 | unsigned char **buff = NULL; |
| 1547 | int *buff_size = NULL; |
| 1548 | u64bit temp64; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1549 | BYTE sg_used = 0; |
| 1550 | int status = 0; |
| 1551 | int i; |
Peter Zijlstra | 6e9a473 | 2006-09-30 23:28:10 -0700 | [diff] [blame] | 1552 | DECLARE_COMPLETION_ONSTACK(wait); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1553 | __u32 left; |
| 1554 | __u32 sz; |
| 1555 | BYTE __user *data_ptr; |
| 1556 | |
| 1557 | if (!arg) |
| 1558 | return -EINVAL; |
| 1559 | if (!capable(CAP_SYS_RAWIO)) |
| 1560 | return -EPERM; |
| 1561 | ioc = (BIG_IOCTL_Command_struct *) |
| 1562 | kmalloc(sizeof(*ioc), GFP_KERNEL); |
| 1563 | if (!ioc) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1564 | status = -ENOMEM; |
| 1565 | goto cleanup1; |
| 1566 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1567 | if (copy_from_user(ioc, argp, sizeof(*ioc))) { |
| 1568 | status = -EFAULT; |
| 1569 | goto cleanup1; |
| 1570 | } |
| 1571 | if ((ioc->buf_size < 1) && |
| 1572 | (ioc->Request.Type.Direction != XFER_NONE)) { |
| 1573 | status = -EINVAL; |
| 1574 | goto cleanup1; |
| 1575 | } |
| 1576 | /* Check kmalloc limits using all SGs */ |
| 1577 | if (ioc->malloc_size > MAX_KMALLOC_SIZE) { |
| 1578 | status = -EINVAL; |
| 1579 | goto cleanup1; |
| 1580 | } |
| 1581 | if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) { |
| 1582 | status = -EINVAL; |
| 1583 | goto cleanup1; |
| 1584 | } |
| 1585 | buff = |
| 1586 | kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL); |
| 1587 | if (!buff) { |
| 1588 | status = -ENOMEM; |
| 1589 | goto cleanup1; |
| 1590 | } |
Robert P. J. Day | 5cbded5 | 2006-12-13 00:35:56 -0800 | [diff] [blame] | 1591 | buff_size = kmalloc(MAXSGENTRIES * sizeof(int), |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1592 | GFP_KERNEL); |
| 1593 | if (!buff_size) { |
| 1594 | status = -ENOMEM; |
| 1595 | goto cleanup1; |
| 1596 | } |
| 1597 | left = ioc->buf_size; |
| 1598 | data_ptr = ioc->buf; |
| 1599 | while (left) { |
| 1600 | sz = (left > |
| 1601 | ioc->malloc_size) ? ioc-> |
| 1602 | malloc_size : left; |
| 1603 | buff_size[sg_used] = sz; |
| 1604 | buff[sg_used] = kmalloc(sz, GFP_KERNEL); |
| 1605 | if (buff[sg_used] == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1606 | status = -ENOMEM; |
Jens Axboe | 15534d3 | 2005-11-18 22:02:44 +0100 | [diff] [blame] | 1607 | goto cleanup1; |
| 1608 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1609 | if (ioc->Request.Type.Direction == XFER_WRITE) { |
| 1610 | if (copy_from_user |
| 1611 | (buff[sg_used], data_ptr, sz)) { |
Nikanth Karthikesan | f7108f9 | 2008-08-04 10:56:07 +0200 | [diff] [blame] | 1612 | status = -EFAULT; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1613 | goto cleanup1; |
| 1614 | } |
| 1615 | } else { |
| 1616 | memset(buff[sg_used], 0, sz); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1617 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1618 | left -= sz; |
| 1619 | data_ptr += sz; |
| 1620 | sg_used++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1621 | } |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 1622 | c = cmd_special_alloc(h); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1623 | if (!c) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1624 | status = -ENOMEM; |
| 1625 | goto cleanup1; |
| 1626 | } |
| 1627 | c->cmd_type = CMD_IOCTL_PEND; |
| 1628 | c->Header.ReplyQueue = 0; |
| 1629 | |
| 1630 | if (ioc->buf_size > 0) { |
| 1631 | c->Header.SGList = sg_used; |
| 1632 | c->Header.SGTotal = sg_used; |
| 1633 | } else { |
| 1634 | c->Header.SGList = 0; |
| 1635 | c->Header.SGTotal = 0; |
| 1636 | } |
| 1637 | c->Header.LUN = ioc->LUN_info; |
| 1638 | c->Header.Tag.lower = c->busaddr; |
| 1639 | |
| 1640 | c->Request = ioc->Request; |
| 1641 | if (ioc->buf_size > 0) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1642 | for (i = 0; i < sg_used; i++) { |
| 1643 | temp64.val = |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1644 | pci_map_single(h->pdev, buff[i], |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1645 | buff_size[i], |
| 1646 | PCI_DMA_BIDIRECTIONAL); |
| 1647 | c->SG[i].Addr.lower = |
| 1648 | temp64.val32.lower; |
| 1649 | c->SG[i].Addr.upper = |
| 1650 | temp64.val32.upper; |
| 1651 | c->SG[i].Len = buff_size[i]; |
| 1652 | c->SG[i].Ext = 0; /* we are not chaining */ |
| 1653 | } |
| 1654 | } |
| 1655 | c->waiting = &wait; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1656 | enqueue_cmd_and_start_io(h, c); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1657 | wait_for_completion(&wait); |
| 1658 | /* unlock the buffers from DMA */ |
| 1659 | for (i = 0; i < sg_used; i++) { |
| 1660 | temp64.val32.lower = c->SG[i].Addr.lower; |
| 1661 | temp64.val32.upper = c->SG[i].Addr.upper; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1662 | pci_unmap_single(h->pdev, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1663 | (dma_addr_t) temp64.val, buff_size[i], |
| 1664 | PCI_DMA_BIDIRECTIONAL); |
| 1665 | } |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1666 | check_ioctl_unit_attention(h, c); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1667 | /* Copy the error information out */ |
| 1668 | ioc->error_info = *(c->err_info); |
| 1669 | if (copy_to_user(argp, ioc, sizeof(*ioc))) { |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 1670 | cmd_special_free(h, c); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1671 | status = -EFAULT; |
| 1672 | goto cleanup1; |
| 1673 | } |
| 1674 | if (ioc->Request.Type.Direction == XFER_READ) { |
| 1675 | /* Copy the data out of the buffer we created */ |
| 1676 | BYTE __user *ptr = ioc->buf; |
| 1677 | for (i = 0; i < sg_used; i++) { |
| 1678 | if (copy_to_user |
| 1679 | (ptr, buff[i], buff_size[i])) { |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 1680 | cmd_special_free(h, c); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1681 | status = -EFAULT; |
| 1682 | goto cleanup1; |
| 1683 | } |
| 1684 | ptr += buff_size[i]; |
| 1685 | } |
| 1686 | } |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 1687 | cmd_special_free(h, c); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1688 | status = 0; |
| 1689 | cleanup1: |
| 1690 | if (buff) { |
| 1691 | for (i = 0; i < sg_used; i++) |
| 1692 | kfree(buff[i]); |
| 1693 | kfree(buff); |
| 1694 | } |
| 1695 | kfree(buff_size); |
| 1696 | kfree(ioc); |
| 1697 | return status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1698 | } |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 1699 | |
| 1700 | /* scsi_cmd_ioctl handles these, below, though some are not */ |
| 1701 | /* very meaningful for cciss. SG_IO is the main one people want. */ |
| 1702 | |
| 1703 | case SG_GET_VERSION_NUM: |
| 1704 | case SG_SET_TIMEOUT: |
| 1705 | case SG_GET_TIMEOUT: |
| 1706 | case SG_GET_RESERVED_SIZE: |
| 1707 | case SG_SET_RESERVED_SIZE: |
| 1708 | case SG_EMULATED_HOST: |
| 1709 | case SG_IO: |
| 1710 | case SCSI_IOCTL_SEND_COMMAND: |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1711 | return scsi_cmd_ioctl(disk->queue, disk, mode, cmd, argp); |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 1712 | |
| 1713 | /* scsi_cmd_ioctl would normally handle these, below, but */ |
| 1714 | /* they aren't a good fit for cciss, as CD-ROMs are */ |
| 1715 | /* not supported, and we don't have any bus/target/lun */ |
| 1716 | /* which we present to the kernel. */ |
| 1717 | |
| 1718 | case CDROM_SEND_PACKET: |
| 1719 | case CDROMCLOSETRAY: |
| 1720 | case CDROMEJECT: |
| 1721 | case SCSI_IOCTL_GET_IDLUN: |
| 1722 | case SCSI_IOCTL_GET_BUS_NUMBER: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1723 | default: |
| 1724 | return -ENOTTY; |
| 1725 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1726 | } |
| 1727 | |
Jens Axboe | 7b30f09 | 2006-07-25 15:02:48 +0200 | [diff] [blame] | 1728 | static void cciss_check_queues(ctlr_info_t *h) |
| 1729 | { |
| 1730 | int start_queue = h->next_to_run; |
| 1731 | int i; |
| 1732 | |
| 1733 | /* check to see if we have maxed out the number of commands that can |
| 1734 | * be placed on the queue. If so then exit. We do this check here |
| 1735 | * in case the interrupt we serviced was from an ioctl and did not |
| 1736 | * free any new commands. |
| 1737 | */ |
Mike Miller | f880632 | 2006-12-06 20:35:01 -0800 | [diff] [blame] | 1738 | 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] | 1739 | return; |
| 1740 | |
| 1741 | /* We have room on the queue for more commands. Now we need to queue |
| 1742 | * them up. We will also keep track of the next queue to run so |
| 1743 | * that every queue gets a chance to be started first. |
| 1744 | */ |
| 1745 | for (i = 0; i < h->highest_lun + 1; i++) { |
| 1746 | int curr_queue = (start_queue + i) % (h->highest_lun + 1); |
| 1747 | /* make sure the disk has been added and the drive is real |
| 1748 | * because this can be called from the middle of init_one. |
| 1749 | */ |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1750 | if (!h->drv[curr_queue]) |
| 1751 | continue; |
| 1752 | if (!(h->drv[curr_queue]->queue) || |
| 1753 | !(h->drv[curr_queue]->heads)) |
Jens Axboe | 7b30f09 | 2006-07-25 15:02:48 +0200 | [diff] [blame] | 1754 | continue; |
| 1755 | blk_start_queue(h->gendisk[curr_queue]->queue); |
| 1756 | |
| 1757 | /* check to see if we have maxed out the number of commands |
| 1758 | * that can be placed on the queue. |
| 1759 | */ |
Mike Miller | f880632 | 2006-12-06 20:35:01 -0800 | [diff] [blame] | 1760 | 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] | 1761 | if (curr_queue == start_queue) { |
| 1762 | h->next_to_run = |
| 1763 | (start_queue + 1) % (h->highest_lun + 1); |
| 1764 | break; |
| 1765 | } else { |
| 1766 | h->next_to_run = curr_queue; |
| 1767 | break; |
| 1768 | } |
Jens Axboe | 7b30f09 | 2006-07-25 15:02:48 +0200 | [diff] [blame] | 1769 | } |
| 1770 | } |
| 1771 | } |
| 1772 | |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1773 | static void cciss_softirq_done(struct request *rq) |
| 1774 | { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1775 | CommandList_struct *c = rq->completion_data; |
| 1776 | ctlr_info_t *h = hba[c->ctlr]; |
| 1777 | SGDescriptor_struct *curr_sg = c->SG; |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1778 | u64bit temp64; |
Mike Miller | 664a717 | 2010-06-02 12:57:58 -0700 | [diff] [blame] | 1779 | unsigned long flags; |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1780 | int i, ddir; |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 1781 | int sg_index = 0; |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1782 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1783 | if (c->Request.Type.Direction == XFER_READ) |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1784 | ddir = PCI_DMA_FROMDEVICE; |
| 1785 | else |
| 1786 | ddir = PCI_DMA_TODEVICE; |
| 1787 | |
| 1788 | /* command did not need to be retried */ |
| 1789 | /* unmap the DMA mapping for all the scatter gather elements */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1790 | for (i = 0; i < c->Header.SGList; i++) { |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 1791 | if (curr_sg[sg_index].Ext == CCISS_SG_CHAIN) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1792 | cciss_unmap_sg_chain_block(h, c); |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 1793 | /* Point to the next block */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1794 | curr_sg = h->cmd_sg_list[c->cmdindex]; |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 1795 | sg_index = 0; |
| 1796 | } |
| 1797 | temp64.val32.lower = curr_sg[sg_index].Addr.lower; |
| 1798 | temp64.val32.upper = curr_sg[sg_index].Addr.upper; |
| 1799 | pci_unmap_page(h->pdev, temp64.val, curr_sg[sg_index].Len, |
| 1800 | ddir); |
| 1801 | ++sg_index; |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1802 | } |
| 1803 | |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 1804 | dev_dbg(&h->pdev->dev, "Done with %p\n", rq); |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1805 | |
Tejun Heo | c3a4d78 | 2009-05-07 22:24:37 +0900 | [diff] [blame] | 1806 | /* set the residual count for pc requests */ |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 1807 | if (rq->cmd_type == REQ_TYPE_BLOCK_PC) |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1808 | rq->resid_len = c->err_info->ResidualCnt; |
Jens Axboe | ac44e5b | 2009-03-27 10:43:52 +0100 | [diff] [blame] | 1809 | |
Tejun Heo | c3a4d78 | 2009-05-07 22:24:37 +0900 | [diff] [blame] | 1810 | blk_end_request_all(rq, (rq->errors == 0) ? 0 : -EIO); |
Kiyoshi Ueda | 3daeea2 | 2007-12-11 17:50:03 -0500 | [diff] [blame] | 1811 | |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1812 | spin_lock_irqsave(&h->lock, flags); |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 1813 | cmd_free(h, c); |
Jens Axboe | 7b30f09 | 2006-07-25 15:02:48 +0200 | [diff] [blame] | 1814 | cciss_check_queues(h); |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1815 | spin_unlock_irqrestore(&h->lock, flags); |
| 1816 | } |
| 1817 | |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 1818 | static inline void log_unit_to_scsi3addr(ctlr_info_t *h, |
| 1819 | unsigned char scsi3addr[], uint32_t log_unit) |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 1820 | { |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1821 | memcpy(scsi3addr, h->drv[log_unit]->LunID, |
| 1822 | sizeof(h->drv[log_unit]->LunID)); |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 1823 | } |
| 1824 | |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 1825 | /* This function gets the SCSI vendor, model, and revision of a logical drive |
| 1826 | * via the inquiry page 0. Model, vendor, and rev are set to empty strings if |
| 1827 | * they cannot be read. |
| 1828 | */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1829 | static void cciss_get_device_descr(ctlr_info_t *h, int logvol, |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 1830 | char *vendor, char *model, char *rev) |
| 1831 | { |
| 1832 | int rc; |
| 1833 | InquiryData_struct *inq_buf; |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 1834 | unsigned char scsi3addr[8]; |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 1835 | |
| 1836 | *vendor = '\0'; |
| 1837 | *model = '\0'; |
| 1838 | *rev = '\0'; |
| 1839 | |
| 1840 | inq_buf = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
| 1841 | if (!inq_buf) |
| 1842 | return; |
| 1843 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1844 | log_unit_to_scsi3addr(h, scsi3addr, logvol); |
| 1845 | 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] | 1846 | scsi3addr, TYPE_CMD); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 1847 | if (rc == IO_OK) { |
| 1848 | memcpy(vendor, &inq_buf->data_byte[8], VENDOR_LEN); |
| 1849 | vendor[VENDOR_LEN] = '\0'; |
| 1850 | memcpy(model, &inq_buf->data_byte[16], MODEL_LEN); |
| 1851 | model[MODEL_LEN] = '\0'; |
| 1852 | memcpy(rev, &inq_buf->data_byte[32], REV_LEN); |
| 1853 | rev[REV_LEN] = '\0'; |
| 1854 | } |
| 1855 | |
| 1856 | kfree(inq_buf); |
| 1857 | return; |
| 1858 | } |
| 1859 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1860 | /* This function gets the serial number of a logical drive via |
| 1861 | * inquiry page 0x83. Serial no. is 16 bytes. If the serial |
| 1862 | * number cannot be had, for whatever reason, 16 bytes of 0xff |
| 1863 | * are returned instead. |
| 1864 | */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1865 | static void cciss_get_serial_no(ctlr_info_t *h, int logvol, |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1866 | unsigned char *serial_no, int buflen) |
| 1867 | { |
| 1868 | #define PAGE_83_INQ_BYTES 64 |
| 1869 | int rc; |
| 1870 | unsigned char *buf; |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 1871 | unsigned char scsi3addr[8]; |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1872 | |
| 1873 | if (buflen > 16) |
| 1874 | buflen = 16; |
| 1875 | memset(serial_no, 0xff, buflen); |
| 1876 | buf = kzalloc(PAGE_83_INQ_BYTES, GFP_KERNEL); |
| 1877 | if (!buf) |
| 1878 | return; |
| 1879 | memset(serial_no, 0, buflen); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1880 | log_unit_to_scsi3addr(h, scsi3addr, logvol); |
| 1881 | rc = sendcmd_withirq(h, CISS_INQUIRY, buf, |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 1882 | PAGE_83_INQ_BYTES, 0x83, scsi3addr, TYPE_CMD); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1883 | if (rc == IO_OK) |
| 1884 | memcpy(serial_no, &buf[8], buflen); |
| 1885 | kfree(buf); |
| 1886 | return; |
| 1887 | } |
| 1888 | |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 1889 | /* |
| 1890 | * cciss_add_disk sets up the block device queue for a logical drive |
| 1891 | */ |
| 1892 | static int cciss_add_disk(ctlr_info_t *h, struct gendisk *disk, |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1893 | int drv_index) |
| 1894 | { |
| 1895 | disk->queue = blk_init_queue(do_cciss_request, &h->lock); |
Stephen M. Cameron | e8074f7 | 2009-09-17 13:47:24 -0500 | [diff] [blame] | 1896 | if (!disk->queue) |
| 1897 | goto init_queue_failure; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1898 | sprintf(disk->disk_name, "cciss/c%dd%d", h->ctlr, drv_index); |
| 1899 | disk->major = h->major; |
| 1900 | disk->first_minor = drv_index << NWD_SHIFT; |
| 1901 | disk->fops = &cciss_fops; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1902 | if (cciss_create_ld_sysfs_entry(h, drv_index)) |
| 1903 | goto cleanup_queue; |
| 1904 | disk->private_data = h->drv[drv_index]; |
| 1905 | disk->driverfs_dev = &h->drv[drv_index]->dev; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1906 | |
| 1907 | /* Set up queue information */ |
| 1908 | blk_queue_bounce_limit(disk->queue, h->pdev->dma_mask); |
| 1909 | |
| 1910 | /* This is a hardware imposed limit. */ |
Martin K. Petersen | 8a78362 | 2010-02-26 00:20:39 -0500 | [diff] [blame] | 1911 | blk_queue_max_segments(disk->queue, h->maxsgentries); |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1912 | |
Martin K. Petersen | 086fa5f | 2010-02-26 00:20:38 -0500 | [diff] [blame] | 1913 | blk_queue_max_hw_sectors(disk->queue, h->cciss_max_sectors); |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1914 | |
| 1915 | blk_queue_softirq_done(disk->queue, cciss_softirq_done); |
| 1916 | |
| 1917 | disk->queue->queuedata = h; |
| 1918 | |
Martin K. Petersen | e1defc4 | 2009-05-22 17:17:49 -0400 | [diff] [blame] | 1919 | blk_queue_logical_block_size(disk->queue, |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1920 | h->drv[drv_index]->block_size); |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1921 | |
| 1922 | /* Make sure all queue data is written out before */ |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1923 | /* setting h->drv[drv_index]->queue, as setting this */ |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1924 | /* allows the interrupt handler to start the queue */ |
| 1925 | wmb(); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1926 | h->drv[drv_index]->queue = disk->queue; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1927 | add_disk(disk); |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 1928 | return 0; |
| 1929 | |
| 1930 | cleanup_queue: |
| 1931 | blk_cleanup_queue(disk->queue); |
| 1932 | disk->queue = NULL; |
Stephen M. Cameron | e8074f7 | 2009-09-17 13:47:24 -0500 | [diff] [blame] | 1933 | init_queue_failure: |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 1934 | return -1; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1935 | } |
| 1936 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1937 | /* 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] | 1938 | * If the usage_count is zero and it is a heretofore unknown drive, or, |
| 1939 | * the drive's capacity, geometry, or serial number has changed, |
| 1940 | * then the drive information will be updated and the disk will be |
| 1941 | * re-registered with the kernel. If these conditions don't hold, |
| 1942 | * then it will be left alone for the next reboot. The exception to this |
| 1943 | * is disk 0 which will always be left registered with the kernel since it |
| 1944 | * is also the controller node. Any changes to disk 0 will show up on |
| 1945 | * the next reboot. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1946 | */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1947 | static void cciss_update_drive_info(ctlr_info_t *h, int drv_index, |
| 1948 | int first_time, int via_ioctl) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1949 | { |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1950 | struct gendisk *disk; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1951 | InquiryData_struct *inq_buff = NULL; |
| 1952 | unsigned int block_size; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 1953 | sector_t total_size; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1954 | unsigned long flags = 0; |
| 1955 | int ret = 0; |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1956 | drive_info_struct *drvinfo; |
| 1957 | |
| 1958 | /* Get information about the disk and modify the driver structure */ |
| 1959 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1960 | drvinfo = kzalloc(sizeof(*drvinfo), GFP_KERNEL); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1961 | if (inq_buff == NULL || drvinfo == NULL) |
| 1962 | goto mem_msg; |
| 1963 | |
| 1964 | /* testing to see if 16-byte CDBs are already being used */ |
| 1965 | if (h->cciss_read == CCISS_READ_16) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1966 | cciss_read_capacity_16(h, drv_index, |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1967 | &total_size, &block_size); |
| 1968 | |
| 1969 | } else { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1970 | cciss_read_capacity(h, drv_index, &total_size, &block_size); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1971 | /* if read_capacity returns all F's this volume is >2TB */ |
| 1972 | /* in size so we switch to 16-byte CDB's for all */ |
| 1973 | /* read/write ops */ |
| 1974 | if (total_size == 0xFFFFFFFFULL) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1975 | cciss_read_capacity_16(h, drv_index, |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1976 | &total_size, &block_size); |
| 1977 | h->cciss_read = CCISS_READ_16; |
| 1978 | h->cciss_write = CCISS_WRITE_16; |
| 1979 | } else { |
| 1980 | h->cciss_read = CCISS_READ_10; |
| 1981 | h->cciss_write = CCISS_WRITE_10; |
| 1982 | } |
| 1983 | } |
| 1984 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1985 | cciss_geometry_inquiry(h, drv_index, total_size, block_size, |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1986 | inq_buff, drvinfo); |
| 1987 | drvinfo->block_size = block_size; |
| 1988 | drvinfo->nr_blocks = total_size + 1; |
| 1989 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1990 | cciss_get_device_descr(h, drv_index, drvinfo->vendor, |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 1991 | drvinfo->model, drvinfo->rev); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1992 | cciss_get_serial_no(h, drv_index, drvinfo->serial_no, |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1993 | sizeof(drvinfo->serial_no)); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1994 | /* Save the lunid in case we deregister the disk, below. */ |
| 1995 | memcpy(drvinfo->LunID, h->drv[drv_index]->LunID, |
| 1996 | sizeof(drvinfo->LunID)); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1997 | |
| 1998 | /* 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] | 1999 | if (h->drv[drv_index]->raid_level != -1 && |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2000 | ((memcmp(drvinfo->serial_no, |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2001 | h->drv[drv_index]->serial_no, 16) == 0) && |
| 2002 | drvinfo->block_size == h->drv[drv_index]->block_size && |
| 2003 | drvinfo->nr_blocks == h->drv[drv_index]->nr_blocks && |
| 2004 | drvinfo->heads == h->drv[drv_index]->heads && |
| 2005 | drvinfo->sectors == h->drv[drv_index]->sectors && |
| 2006 | drvinfo->cylinders == h->drv[drv_index]->cylinders)) |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2007 | /* The disk is unchanged, nothing to update */ |
| 2008 | goto freeret; |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2009 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2010 | /* If we get here it's not the same disk, or something's changed, |
| 2011 | * so we need to * deregister it, and re-register it, if it's not |
| 2012 | * in use. |
| 2013 | * If the disk already exists then deregister it before proceeding |
| 2014 | * (unless it's the first disk (for the controller node). |
| 2015 | */ |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2016 | if (h->drv[drv_index]->raid_level != -1 && drv_index != 0) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2017 | 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] | 2018 | spin_lock_irqsave(&h->lock, flags); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2019 | h->drv[drv_index]->busy_configuring = 1; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2020 | spin_unlock_irqrestore(&h->lock, flags); |
scameron@beardog.cca.cpqcorp.net | e14ac67 | 2008-04-17 13:19:03 +0200 | [diff] [blame] | 2021 | |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2022 | /* deregister_disk sets h->drv[drv_index]->queue = NULL |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2023 | * which keeps the interrupt handler from starting |
| 2024 | * the queue. |
| 2025 | */ |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 2026 | ret = deregister_disk(h, drv_index, 0, via_ioctl); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2027 | } |
| 2028 | |
| 2029 | /* If the disk is in use return */ |
| 2030 | if (ret) |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2031 | goto freeret; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2032 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2033 | /* Save the new information from cciss_geometry_inquiry |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2034 | * and serial number inquiry. If the disk was deregistered |
| 2035 | * above, then h->drv[drv_index] will be NULL. |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2036 | */ |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2037 | if (h->drv[drv_index] == NULL) { |
| 2038 | drvinfo->device_initialized = 0; |
| 2039 | h->drv[drv_index] = drvinfo; |
| 2040 | drvinfo = NULL; /* so it won't be freed below. */ |
| 2041 | } else { |
| 2042 | /* special case for cxd0 */ |
| 2043 | h->drv[drv_index]->block_size = drvinfo->block_size; |
| 2044 | h->drv[drv_index]->nr_blocks = drvinfo->nr_blocks; |
| 2045 | h->drv[drv_index]->heads = drvinfo->heads; |
| 2046 | h->drv[drv_index]->sectors = drvinfo->sectors; |
| 2047 | h->drv[drv_index]->cylinders = drvinfo->cylinders; |
| 2048 | h->drv[drv_index]->raid_level = drvinfo->raid_level; |
| 2049 | memcpy(h->drv[drv_index]->serial_no, drvinfo->serial_no, 16); |
| 2050 | memcpy(h->drv[drv_index]->vendor, drvinfo->vendor, |
| 2051 | VENDOR_LEN + 1); |
| 2052 | memcpy(h->drv[drv_index]->model, drvinfo->model, MODEL_LEN + 1); |
| 2053 | memcpy(h->drv[drv_index]->rev, drvinfo->rev, REV_LEN + 1); |
| 2054 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2055 | |
| 2056 | ++h->num_luns; |
| 2057 | disk = h->gendisk[drv_index]; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2058 | set_capacity(disk, h->drv[drv_index]->nr_blocks); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2059 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2060 | /* If it's not disk 0 (drv_index != 0) |
| 2061 | * or if it was disk 0, but there was previously |
| 2062 | * no actual corresponding configured logical drive |
| 2063 | * (raid_leve == -1) then we want to update the |
| 2064 | * logical drive's information. |
| 2065 | */ |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 2066 | if (drv_index || first_time) { |
| 2067 | if (cciss_add_disk(h, disk, drv_index) != 0) { |
| 2068 | cciss_free_gendisk(h, drv_index); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2069 | cciss_free_drive_info(h, drv_index); |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2070 | dev_warn(&h->pdev->dev, "could not update disk %d\n", |
| 2071 | drv_index); |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 2072 | --h->num_luns; |
| 2073 | } |
| 2074 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2075 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2076 | freeret: |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2077 | kfree(inq_buff); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2078 | kfree(drvinfo); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2079 | return; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2080 | mem_msg: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2081 | dev_err(&h->pdev->dev, "out of memory\n"); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2082 | goto freeret; |
| 2083 | } |
| 2084 | |
| 2085 | /* 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] | 2086 | * that has a null drv pointer and allocate the drive info struct and |
| 2087 | * will return that index This is where new drives will be added. |
| 2088 | * If the index to be returned is greater than the highest_lun index for |
| 2089 | * the controller then highest_lun is set * to this new index. |
| 2090 | * If there are no available indexes or if tha allocation fails, then -1 |
| 2091 | * is returned. * "controller_node" is used to know if this is a real |
| 2092 | * logical drive, or just the controller node, which determines if this |
| 2093 | * counts towards highest_lun. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2094 | */ |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2095 | 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] | 2096 | { |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2097 | int i; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2098 | drive_info_struct *drv; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2099 | |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2100 | /* Search for an empty slot for our drive info */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2101 | for (i = 0; i < CISS_MAX_LUN; i++) { |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2102 | |
| 2103 | /* if not cxd0 case, and it's occupied, skip it. */ |
| 2104 | if (h->drv[i] && i != 0) |
| 2105 | continue; |
| 2106 | /* |
| 2107 | * If it's cxd0 case, and drv is alloc'ed already, and a |
| 2108 | * disk is configured there, skip it. |
| 2109 | */ |
| 2110 | if (i == 0 && h->drv[i] && h->drv[i]->raid_level != -1) |
| 2111 | continue; |
| 2112 | |
| 2113 | /* |
| 2114 | * We've found an empty slot. Update highest_lun |
| 2115 | * provided this isn't just the fake cxd0 controller node. |
| 2116 | */ |
| 2117 | if (i > h->highest_lun && !controller_node) |
| 2118 | h->highest_lun = i; |
| 2119 | |
| 2120 | /* If adding a real disk at cxd0, and it's already alloc'ed */ |
| 2121 | if (i == 0 && h->drv[i] != NULL) |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2122 | return i; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2123 | |
| 2124 | /* |
| 2125 | * Found an empty slot, not already alloc'ed. Allocate it. |
| 2126 | * Mark it with raid_level == -1, so we know it's new later on. |
| 2127 | */ |
| 2128 | drv = kzalloc(sizeof(*drv), GFP_KERNEL); |
| 2129 | if (!drv) |
| 2130 | return -1; |
| 2131 | drv->raid_level = -1; /* so we know it's new */ |
| 2132 | h->drv[i] = drv; |
| 2133 | return i; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2134 | } |
| 2135 | return -1; |
| 2136 | } |
| 2137 | |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2138 | static void cciss_free_drive_info(ctlr_info_t *h, int drv_index) |
| 2139 | { |
| 2140 | kfree(h->drv[drv_index]); |
| 2141 | h->drv[drv_index] = NULL; |
| 2142 | } |
| 2143 | |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 2144 | static void cciss_free_gendisk(ctlr_info_t *h, int drv_index) |
| 2145 | { |
| 2146 | put_disk(h->gendisk[drv_index]); |
| 2147 | h->gendisk[drv_index] = NULL; |
| 2148 | } |
| 2149 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2150 | /* cciss_add_gendisk finds a free hba[]->drv structure |
| 2151 | * and allocates a gendisk if needed, and sets the lunid |
| 2152 | * in the drvinfo structure. It returns the index into |
| 2153 | * the ->drv[] array, or -1 if none are free. |
| 2154 | * is_controller_node indicates whether highest_lun should |
| 2155 | * count this disk, or if it's only being added to provide |
| 2156 | * a means to talk to the controller in case no logical |
| 2157 | * drives have yet been configured. |
| 2158 | */ |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 2159 | static int cciss_add_gendisk(ctlr_info_t *h, unsigned char lunid[], |
| 2160 | int controller_node) |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2161 | { |
| 2162 | int drv_index; |
| 2163 | |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2164 | drv_index = cciss_alloc_drive_info(h, controller_node); |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2165 | if (drv_index == -1) |
| 2166 | return -1; |
Stephen M. Cameron | 8ce5196 | 2009-09-17 13:47:34 -0500 | [diff] [blame] | 2167 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2168 | /*Check if the gendisk needs to be allocated */ |
| 2169 | if (!h->gendisk[drv_index]) { |
| 2170 | h->gendisk[drv_index] = |
| 2171 | alloc_disk(1 << NWD_SHIFT); |
| 2172 | if (!h->gendisk[drv_index]) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2173 | dev_err(&h->pdev->dev, |
| 2174 | "could not allocate a new disk %d\n", |
| 2175 | drv_index); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2176 | goto err_free_drive_info; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2177 | } |
| 2178 | } |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2179 | memcpy(h->drv[drv_index]->LunID, lunid, |
| 2180 | sizeof(h->drv[drv_index]->LunID)); |
| 2181 | if (cciss_create_ld_sysfs_entry(h, drv_index)) |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 2182 | goto err_free_disk; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2183 | /* Don't need to mark this busy because nobody */ |
| 2184 | /* else knows about this disk yet to contend */ |
| 2185 | /* for access to it. */ |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2186 | h->drv[drv_index]->busy_configuring = 0; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2187 | wmb(); |
| 2188 | return drv_index; |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 2189 | |
| 2190 | err_free_disk: |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 2191 | cciss_free_gendisk(h, drv_index); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2192 | err_free_drive_info: |
| 2193 | cciss_free_drive_info(h, drv_index); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 2194 | return -1; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2195 | } |
| 2196 | |
| 2197 | /* This is for the special case of a controller which |
| 2198 | * has no logical drives. In this case, we still need |
| 2199 | * to register a disk so the controller can be accessed |
| 2200 | * by the Array Config Utility. |
| 2201 | */ |
| 2202 | static void cciss_add_controller_node(ctlr_info_t *h) |
| 2203 | { |
| 2204 | struct gendisk *disk; |
| 2205 | int drv_index; |
| 2206 | |
| 2207 | if (h->gendisk[0] != NULL) /* already did this? Then bail. */ |
| 2208 | return; |
| 2209 | |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 2210 | drv_index = cciss_add_gendisk(h, CTLR_LUNID, 1); |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 2211 | if (drv_index == -1) |
| 2212 | goto error; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2213 | h->drv[drv_index]->block_size = 512; |
| 2214 | h->drv[drv_index]->nr_blocks = 0; |
| 2215 | h->drv[drv_index]->heads = 0; |
| 2216 | h->drv[drv_index]->sectors = 0; |
| 2217 | h->drv[drv_index]->cylinders = 0; |
| 2218 | h->drv[drv_index]->raid_level = -1; |
| 2219 | memset(h->drv[drv_index]->serial_no, 0, 16); |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2220 | disk = h->gendisk[drv_index]; |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 2221 | if (cciss_add_disk(h, disk, drv_index) == 0) |
| 2222 | return; |
| 2223 | cciss_free_gendisk(h, drv_index); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2224 | cciss_free_drive_info(h, drv_index); |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 2225 | error: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2226 | dev_warn(&h->pdev->dev, "could not add disk 0.\n"); |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 2227 | return; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2228 | } |
| 2229 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2230 | /* This function will add and remove logical drives from the Logical |
Bjorn Helgaas | d14c4ab | 2006-06-25 05:49:04 -0700 | [diff] [blame] | 2231 | * drive array of the controller and maintain persistency of ordering |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2232 | * so that mount points are preserved until the next reboot. This allows |
| 2233 | * for the removal of logical drives in the middle of the drive array |
| 2234 | * without a re-ordering of those drives. |
| 2235 | * INPUT |
| 2236 | * h = The controller to perform the operations on |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2237 | */ |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 2238 | static int rebuild_lun_table(ctlr_info_t *h, int first_time, |
| 2239 | int via_ioctl) |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2240 | { |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2241 | int num_luns; |
| 2242 | ReportLunData_struct *ld_buff = NULL; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2243 | int return_code; |
| 2244 | int listlength = 0; |
| 2245 | int i; |
| 2246 | int drv_found; |
| 2247 | int drv_index = 0; |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 2248 | unsigned char lunid[8] = CTLR_LUNID; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2249 | unsigned long flags; |
| 2250 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2251 | if (!capable(CAP_SYS_RAWIO)) |
| 2252 | return -EPERM; |
| 2253 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2254 | /* Set busy_configuring flag for this operation */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2255 | spin_lock_irqsave(&h->lock, flags); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2256 | if (h->busy_configuring) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2257 | spin_unlock_irqrestore(&h->lock, flags); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2258 | return -EBUSY; |
| 2259 | } |
| 2260 | h->busy_configuring = 1; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2261 | spin_unlock_irqrestore(&h->lock, flags); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2262 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2263 | ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL); |
| 2264 | if (ld_buff == NULL) |
| 2265 | goto mem_msg; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2266 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2267 | 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] | 2268 | sizeof(ReportLunData_struct), |
| 2269 | 0, CTLR_LUNID, TYPE_CMD); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2270 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2271 | if (return_code == IO_OK) |
| 2272 | listlength = be32_to_cpu(*(__be32 *) ld_buff->LUNListLength); |
| 2273 | else { /* reading number of logical volumes failed */ |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2274 | dev_warn(&h->pdev->dev, |
| 2275 | "report logical volume command failed\n"); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2276 | listlength = 0; |
| 2277 | goto freeret; |
| 2278 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2279 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2280 | num_luns = listlength / 8; /* 8 bytes per entry */ |
| 2281 | if (num_luns > CISS_MAX_LUN) { |
| 2282 | num_luns = CISS_MAX_LUN; |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2283 | dev_warn(&h->pdev->dev, "more luns configured" |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2284 | " on controller than can be handled by" |
| 2285 | " this driver.\n"); |
| 2286 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2287 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2288 | if (num_luns == 0) |
| 2289 | cciss_add_controller_node(h); |
| 2290 | |
| 2291 | /* Compare controller drive array to driver's drive array |
| 2292 | * to see if any drives are missing on the controller due |
| 2293 | * to action of Array Config Utility (user deletes drive) |
| 2294 | * and deregister logical drives which have disappeared. |
| 2295 | */ |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2296 | for (i = 0; i <= h->highest_lun; i++) { |
| 2297 | int j; |
| 2298 | drv_found = 0; |
Stephen M. Cameron | d8a0be6 | 2008-12-18 14:55:11 +0100 | [diff] [blame] | 2299 | |
| 2300 | /* skip holes in the array from already deleted drives */ |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2301 | if (h->drv[i] == NULL) |
Stephen M. Cameron | d8a0be6 | 2008-12-18 14:55:11 +0100 | [diff] [blame] | 2302 | continue; |
| 2303 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2304 | for (j = 0; j < num_luns; j++) { |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 2305 | memcpy(lunid, &ld_buff->LUN[j][0], sizeof(lunid)); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2306 | if (memcmp(h->drv[i]->LunID, lunid, |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 2307 | sizeof(lunid)) == 0) { |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2308 | drv_found = 1; |
| 2309 | break; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2310 | } |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2311 | } |
| 2312 | if (!drv_found) { |
| 2313 | /* Deregister it from the OS, it's gone. */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2314 | spin_lock_irqsave(&h->lock, flags); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2315 | h->drv[i]->busy_configuring = 1; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2316 | spin_unlock_irqrestore(&h->lock, flags); |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 2317 | return_code = deregister_disk(h, i, 1, via_ioctl); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2318 | if (h->drv[i] != NULL) |
| 2319 | h->drv[i]->busy_configuring = 0; |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2320 | } |
| 2321 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2322 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2323 | /* Compare controller drive array to driver's drive array. |
| 2324 | * Check for updates in the drive information and any new drives |
| 2325 | * on the controller due to ACU adding logical drives, or changing |
| 2326 | * a logical drive's size, etc. Reregister any new/changed drives |
| 2327 | */ |
| 2328 | for (i = 0; i < num_luns; i++) { |
| 2329 | int j; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2330 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2331 | drv_found = 0; |
| 2332 | |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 2333 | memcpy(lunid, &ld_buff->LUN[i][0], sizeof(lunid)); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2334 | /* Find if the LUN is already in the drive array |
| 2335 | * of the driver. If so then update its info |
| 2336 | * if not in use. If it does not exist then find |
| 2337 | * the first free index and add it. |
| 2338 | */ |
| 2339 | for (j = 0; j <= h->highest_lun; j++) { |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2340 | if (h->drv[j] != NULL && |
| 2341 | memcmp(h->drv[j]->LunID, lunid, |
| 2342 | sizeof(h->drv[j]->LunID)) == 0) { |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2343 | drv_index = j; |
| 2344 | drv_found = 1; |
| 2345 | break; |
| 2346 | } |
| 2347 | } |
| 2348 | |
| 2349 | /* check if the drive was found already in the array */ |
| 2350 | if (!drv_found) { |
Mike Miller | eece695 | 2008-08-04 11:54:53 +0200 | [diff] [blame] | 2351 | drv_index = cciss_add_gendisk(h, lunid, 0); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2352 | if (drv_index == -1) |
| 2353 | goto freeret; |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2354 | } |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2355 | cciss_update_drive_info(h, drv_index, first_time, via_ioctl); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2356 | } /* end for */ |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2357 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2358 | freeret: |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2359 | kfree(ld_buff); |
| 2360 | h->busy_configuring = 0; |
| 2361 | /* We return -1 here to tell the ACU that we have registered/updated |
| 2362 | * all of the drives that we can and to keep it from calling us |
| 2363 | * additional times. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2364 | */ |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2365 | return -1; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2366 | mem_msg: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2367 | dev_err(&h->pdev->dev, "out of memory\n"); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2368 | h->busy_configuring = 0; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2369 | goto freeret; |
| 2370 | } |
| 2371 | |
Stephen M. Cameron | 9ddb27b | 2009-09-17 13:47:39 -0500 | [diff] [blame] | 2372 | static void cciss_clear_drive_info(drive_info_struct *drive_info) |
| 2373 | { |
| 2374 | /* zero out the disk size info */ |
| 2375 | drive_info->nr_blocks = 0; |
| 2376 | drive_info->block_size = 0; |
| 2377 | drive_info->heads = 0; |
| 2378 | drive_info->sectors = 0; |
| 2379 | drive_info->cylinders = 0; |
| 2380 | drive_info->raid_level = -1; |
| 2381 | memset(drive_info->serial_no, 0, sizeof(drive_info->serial_no)); |
| 2382 | memset(drive_info->model, 0, sizeof(drive_info->model)); |
| 2383 | memset(drive_info->rev, 0, sizeof(drive_info->rev)); |
| 2384 | memset(drive_info->vendor, 0, sizeof(drive_info->vendor)); |
| 2385 | /* |
| 2386 | * don't clear the LUNID though, we need to remember which |
| 2387 | * one this one is. |
| 2388 | */ |
| 2389 | } |
| 2390 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2391 | /* This function will deregister the disk and it's queue from the |
| 2392 | * kernel. It must be called with the controller lock held and the |
| 2393 | * drv structures busy_configuring flag set. It's parameters are: |
| 2394 | * |
| 2395 | * disk = This is the disk to be deregistered |
| 2396 | * drv = This is the drive_info_struct associated with the disk to be |
| 2397 | * deregistered. It contains information about the disk used |
| 2398 | * by the driver. |
| 2399 | * clear_all = This flag determines whether or not the disk information |
| 2400 | * is going to be completely cleared out and the highest_lun |
| 2401 | * reset. Sometimes we want to clear out information about |
Bjorn Helgaas | d14c4ab | 2006-06-25 05:49:04 -0700 | [diff] [blame] | 2402 | * the disk in preparation for re-adding it. In this case |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2403 | * the highest_lun should be left unchanged and the LunID |
| 2404 | * should not be cleared. |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 2405 | * via_ioctl |
| 2406 | * This indicates whether we've reached this path via ioctl. |
| 2407 | * This affects the maximum usage count allowed for c0d0 to be messed with. |
| 2408 | * If this path is reached via ioctl(), then the max_usage_count will |
| 2409 | * be 1, as the process calling ioctl() has got to have the device open. |
| 2410 | * 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] | 2411 | */ |
Stephen M. Cameron | a0ea862 | 2008-12-18 14:55:51 +0100 | [diff] [blame] | 2412 | static int deregister_disk(ctlr_info_t *h, int drv_index, |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 2413 | int clear_all, int via_ioctl) |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2414 | { |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 2415 | int i; |
Stephen M. Cameron | a0ea862 | 2008-12-18 14:55:51 +0100 | [diff] [blame] | 2416 | struct gendisk *disk; |
| 2417 | drive_info_struct *drv; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2418 | int recalculate_highest_lun; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2419 | |
| 2420 | if (!capable(CAP_SYS_RAWIO)) |
| 2421 | return -EPERM; |
| 2422 | |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2423 | drv = h->drv[drv_index]; |
Stephen M. Cameron | a0ea862 | 2008-12-18 14:55:51 +0100 | [diff] [blame] | 2424 | disk = h->gendisk[drv_index]; |
| 2425 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2426 | /* make sure logical volume is NOT is use */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2427 | if (clear_all || (h->gendisk[0] == disk)) { |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 2428 | if (drv->usage_count > via_ioctl) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2429 | return -EBUSY; |
| 2430 | } else if (drv->usage_count > 0) |
| 2431 | return -EBUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2432 | |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2433 | recalculate_highest_lun = (drv == h->drv[h->highest_lun]); |
| 2434 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2435 | /* invalidate the devices and deregister the disk. If it is disk |
| 2436 | * zero do not deregister it but just zero out it's values. This |
| 2437 | * allows us to delete disk zero but keep the controller registered. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2438 | */ |
| 2439 | if (h->gendisk[0] != disk) { |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2440 | struct request_queue *q = disk->queue; |
Stephen M. Cameron | 097d026 | 2009-09-17 13:47:19 -0500 | [diff] [blame] | 2441 | if (disk->flags & GENHD_FL_UP) { |
Stephen M. Cameron | 8ce5196 | 2009-09-17 13:47:34 -0500 | [diff] [blame] | 2442 | cciss_destroy_ld_sysfs_entry(h, drv_index, 0); |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2443 | del_gendisk(disk); |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2444 | } |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2445 | if (q) |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2446 | blk_cleanup_queue(q); |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2447 | /* If clear_all is set then we are deleting the logical |
| 2448 | * drive, not just refreshing its info. For drives |
| 2449 | * other than disk 0 we will call put_disk. We do not |
| 2450 | * do this for disk 0 as we need it to be able to |
| 2451 | * configure the controller. |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2452 | */ |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2453 | if (clear_all){ |
| 2454 | /* This isn't pretty, but we need to find the |
| 2455 | * disk in our array and NULL our the pointer. |
| 2456 | * This is so that we will call alloc_disk if |
| 2457 | * this index is used again later. |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2458 | */ |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2459 | for (i=0; i < CISS_MAX_LUN; i++){ |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2460 | if (h->gendisk[i] == disk) { |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2461 | h->gendisk[i] = NULL; |
| 2462 | break; |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 2463 | } |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 2464 | } |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2465 | put_disk(disk); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2466 | } |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 2467 | } else { |
| 2468 | set_capacity(disk, 0); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2469 | cciss_clear_drive_info(drv); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2470 | } |
| 2471 | |
| 2472 | --h->num_luns; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2473 | |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2474 | /* if it was the last disk, find the new hightest lun */ |
| 2475 | if (clear_all && recalculate_highest_lun) { |
Bill Pemberton | c2d45b4 | 2010-04-30 09:34:32 -0400 | [diff] [blame] | 2476 | int newhighest = -1; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2477 | for (i = 0; i <= h->highest_lun; i++) { |
| 2478 | /* if the disk has size > 0, it is available */ |
| 2479 | if (h->drv[i] && h->drv[i]->heads) |
| 2480 | newhighest = i; |
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 | h->highest_lun = newhighest; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2483 | } |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 2484 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2485 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2486 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2487 | 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] | 2488 | size_t size, __u8 page_code, unsigned char *scsi3addr, |
| 2489 | int cmd_type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2490 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2491 | u64bit buff_dma_handle; |
| 2492 | int status = IO_OK; |
| 2493 | |
| 2494 | c->cmd_type = CMD_IOCTL_PEND; |
| 2495 | c->Header.ReplyQueue = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2496 | if (buff != NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2497 | c->Header.SGList = 1; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2498 | c->Header.SGTotal = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2499 | } else { |
| 2500 | c->Header.SGList = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2501 | c->Header.SGTotal = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2502 | } |
| 2503 | c->Header.Tag.lower = c->busaddr; |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2504 | memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2505 | |
| 2506 | c->Request.Type.Type = cmd_type; |
| 2507 | if (cmd_type == TYPE_CMD) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2508 | switch (cmd) { |
| 2509 | case CISS_INQUIRY: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2510 | /* are we trying to read a vital product page */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2511 | if (page_code != 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2512 | c->Request.CDB[1] = 0x01; |
| 2513 | c->Request.CDB[2] = page_code; |
| 2514 | } |
| 2515 | c->Request.CDBLen = 6; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2516 | c->Request.Type.Attribute = ATTR_SIMPLE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2517 | c->Request.Type.Direction = XFER_READ; |
| 2518 | c->Request.Timeout = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2519 | c->Request.CDB[0] = CISS_INQUIRY; |
| 2520 | c->Request.CDB[4] = size & 0xFF; |
| 2521 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2522 | case CISS_REPORT_LOG: |
| 2523 | case CISS_REPORT_PHYS: |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2524 | /* Talking to controller so It's a physical command |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2525 | mode = 00 target = 0. Nothing to write. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2526 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2527 | c->Request.CDBLen = 12; |
| 2528 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2529 | c->Request.Type.Direction = XFER_READ; |
| 2530 | c->Request.Timeout = 0; |
| 2531 | c->Request.CDB[0] = cmd; |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 2532 | c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2533 | c->Request.CDB[7] = (size >> 16) & 0xFF; |
| 2534 | c->Request.CDB[8] = (size >> 8) & 0xFF; |
| 2535 | c->Request.CDB[9] = size & 0xFF; |
| 2536 | break; |
| 2537 | |
| 2538 | case CCISS_READ_CAPACITY: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2539 | c->Request.CDBLen = 10; |
| 2540 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2541 | c->Request.Type.Direction = XFER_READ; |
| 2542 | c->Request.Timeout = 0; |
| 2543 | c->Request.CDB[0] = cmd; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2544 | break; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2545 | case CCISS_READ_CAPACITY_16: |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2546 | c->Request.CDBLen = 16; |
| 2547 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2548 | c->Request.Type.Direction = XFER_READ; |
| 2549 | c->Request.Timeout = 0; |
| 2550 | c->Request.CDB[0] = cmd; |
| 2551 | c->Request.CDB[1] = 0x10; |
| 2552 | c->Request.CDB[10] = (size >> 24) & 0xFF; |
| 2553 | c->Request.CDB[11] = (size >> 16) & 0xFF; |
| 2554 | c->Request.CDB[12] = (size >> 8) & 0xFF; |
| 2555 | c->Request.CDB[13] = size & 0xFF; |
| 2556 | c->Request.Timeout = 0; |
| 2557 | c->Request.CDB[0] = cmd; |
| 2558 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2559 | case CCISS_CACHE_FLUSH: |
| 2560 | c->Request.CDBLen = 12; |
| 2561 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2562 | c->Request.Type.Direction = XFER_WRITE; |
| 2563 | c->Request.Timeout = 0; |
| 2564 | c->Request.CDB[0] = BMIC_WRITE; |
| 2565 | c->Request.CDB[6] = BMIC_CACHE_FLUSH; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2566 | break; |
Stephen M. Cameron | 88f627a | 2009-06-02 14:48:11 +0200 | [diff] [blame] | 2567 | case TEST_UNIT_READY: |
Stephen M. Cameron | 88f627a | 2009-06-02 14:48:11 +0200 | [diff] [blame] | 2568 | c->Request.CDBLen = 6; |
| 2569 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2570 | c->Request.Type.Direction = XFER_NONE; |
| 2571 | c->Request.Timeout = 0; |
| 2572 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2573 | default: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2574 | dev_warn(&h->pdev->dev, "Unknown Command 0x%c\n", cmd); |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 2575 | return IO_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2576 | } |
| 2577 | } else if (cmd_type == TYPE_MSG) { |
| 2578 | switch (cmd) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2579 | case 0: /* ABORT message */ |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2580 | c->Request.CDBLen = 12; |
| 2581 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2582 | c->Request.Type.Direction = XFER_WRITE; |
| 2583 | c->Request.Timeout = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2584 | c->Request.CDB[0] = cmd; /* abort */ |
| 2585 | c->Request.CDB[1] = 0; /* abort a command */ |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2586 | /* buff contains the tag of the command to abort */ |
| 2587 | memcpy(&c->Request.CDB[4], buff, 8); |
| 2588 | break; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2589 | case 1: /* RESET message */ |
Stephen M. Cameron | 88f627a | 2009-06-02 14:48:11 +0200 | [diff] [blame] | 2590 | c->Request.CDBLen = 16; |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2591 | c->Request.Type.Attribute = ATTR_SIMPLE; |
Stephen M. Cameron | 88f627a | 2009-06-02 14:48:11 +0200 | [diff] [blame] | 2592 | c->Request.Type.Direction = XFER_NONE; |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2593 | c->Request.Timeout = 0; |
| 2594 | memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB)); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2595 | c->Request.CDB[0] = cmd; /* reset */ |
Stephen M. Cameron | 88f627a | 2009-06-02 14:48:11 +0200 | [diff] [blame] | 2596 | c->Request.CDB[1] = 0x03; /* reset a target */ |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2597 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2598 | case 3: /* No-Op message */ |
| 2599 | c->Request.CDBLen = 1; |
| 2600 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2601 | c->Request.Type.Direction = XFER_WRITE; |
| 2602 | c->Request.Timeout = 0; |
| 2603 | c->Request.CDB[0] = cmd; |
| 2604 | break; |
| 2605 | default: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2606 | dev_warn(&h->pdev->dev, |
| 2607 | "unknown message type %d\n", cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2608 | return IO_ERROR; |
| 2609 | } |
| 2610 | } else { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2611 | dev_warn(&h->pdev->dev, "unknown command type %d\n", cmd_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2612 | return IO_ERROR; |
| 2613 | } |
| 2614 | /* Fill in the scatter gather information */ |
| 2615 | if (size > 0) { |
| 2616 | buff_dma_handle.val = (__u64) pci_map_single(h->pdev, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2617 | buff, size, |
| 2618 | PCI_DMA_BIDIRECTIONAL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2619 | c->SG[0].Addr.lower = buff_dma_handle.val32.lower; |
| 2620 | c->SG[0].Addr.upper = buff_dma_handle.val32.upper; |
| 2621 | c->SG[0].Len = size; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2622 | c->SG[0].Ext = 0; /* we are not chaining */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2623 | } |
| 2624 | return status; |
| 2625 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2626 | |
scameron@beardog.cca.cpqcorp.net | 3c2ab40 | 2009-06-08 16:04:35 -0500 | [diff] [blame] | 2627 | static int check_target_status(ctlr_info_t *h, CommandList_struct *c) |
| 2628 | { |
| 2629 | switch (c->err_info->ScsiStatus) { |
| 2630 | case SAM_STAT_GOOD: |
| 2631 | return IO_OK; |
| 2632 | case SAM_STAT_CHECK_CONDITION: |
| 2633 | switch (0xf & c->err_info->SenseInfo[2]) { |
| 2634 | case 0: return IO_OK; /* no sense */ |
| 2635 | case 1: return IO_OK; /* recovered error */ |
| 2636 | default: |
Stephen M. Cameron | c08fac6 | 2009-11-12 12:49:25 -0600 | [diff] [blame] | 2637 | if (check_for_unit_attention(h, c)) |
| 2638 | return IO_NEEDS_RETRY; |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2639 | dev_warn(&h->pdev->dev, "cmd 0x%02x " |
scameron@beardog.cca.cpqcorp.net | 3c2ab40 | 2009-06-08 16:04:35 -0500 | [diff] [blame] | 2640 | "check condition, sense key = 0x%02x\n", |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2641 | c->Request.CDB[0], c->err_info->SenseInfo[2]); |
scameron@beardog.cca.cpqcorp.net | 3c2ab40 | 2009-06-08 16:04:35 -0500 | [diff] [blame] | 2642 | } |
| 2643 | break; |
| 2644 | default: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2645 | dev_warn(&h->pdev->dev, "cmd 0x%02x" |
| 2646 | "scsi status = 0x%02x\n", |
scameron@beardog.cca.cpqcorp.net | 3c2ab40 | 2009-06-08 16:04:35 -0500 | [diff] [blame] | 2647 | c->Request.CDB[0], c->err_info->ScsiStatus); |
| 2648 | break; |
| 2649 | } |
| 2650 | return IO_ERROR; |
| 2651 | } |
| 2652 | |
scameron@beardog.cca.cpqcorp.net | 789a424 | 2009-06-08 16:05:56 -0500 | [diff] [blame] | 2653 | 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] | 2654 | { |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2655 | int return_status = IO_OK; |
| 2656 | |
scameron@beardog.cca.cpqcorp.net | 789a424 | 2009-06-08 16:05:56 -0500 | [diff] [blame] | 2657 | if (c->err_info->CommandStatus == CMD_SUCCESS) |
| 2658 | return IO_OK; |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2659 | |
| 2660 | switch (c->err_info->CommandStatus) { |
| 2661 | case CMD_TARGET_STATUS: |
scameron@beardog.cca.cpqcorp.net | 3c2ab40 | 2009-06-08 16:04:35 -0500 | [diff] [blame] | 2662 | return_status = check_target_status(h, c); |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2663 | break; |
| 2664 | case CMD_DATA_UNDERRUN: |
| 2665 | case CMD_DATA_OVERRUN: |
| 2666 | /* expected for inquiry and report lun commands */ |
| 2667 | break; |
| 2668 | case CMD_INVALID: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2669 | dev_warn(&h->pdev->dev, "cmd 0x%02x is " |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2670 | "reported invalid\n", c->Request.CDB[0]); |
| 2671 | return_status = IO_ERROR; |
| 2672 | break; |
| 2673 | case CMD_PROTOCOL_ERR: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2674 | dev_warn(&h->pdev->dev, "cmd 0x%02x has " |
| 2675 | "protocol error\n", c->Request.CDB[0]); |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2676 | return_status = IO_ERROR; |
| 2677 | break; |
| 2678 | case CMD_HARDWARE_ERR: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2679 | dev_warn(&h->pdev->dev, "cmd 0x%02x had " |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2680 | " hardware error\n", c->Request.CDB[0]); |
| 2681 | return_status = IO_ERROR; |
| 2682 | break; |
| 2683 | case CMD_CONNECTION_LOST: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2684 | dev_warn(&h->pdev->dev, "cmd 0x%02x had " |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2685 | "connection lost\n", c->Request.CDB[0]); |
| 2686 | return_status = IO_ERROR; |
| 2687 | break; |
| 2688 | case CMD_ABORTED: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2689 | dev_warn(&h->pdev->dev, "cmd 0x%02x was " |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2690 | "aborted\n", c->Request.CDB[0]); |
| 2691 | return_status = IO_ERROR; |
| 2692 | break; |
| 2693 | case CMD_ABORT_FAILED: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2694 | dev_warn(&h->pdev->dev, "cmd 0x%02x reports " |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2695 | "abort failed\n", c->Request.CDB[0]); |
| 2696 | return_status = IO_ERROR; |
| 2697 | break; |
| 2698 | case CMD_UNSOLICITED_ABORT: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2699 | 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] | 2700 | c->Request.CDB[0]); |
scameron@beardog.cca.cpqcorp.net | 789a424 | 2009-06-08 16:05:56 -0500 | [diff] [blame] | 2701 | return_status = IO_NEEDS_RETRY; |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2702 | break; |
| 2703 | default: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2704 | dev_warn(&h->pdev->dev, "cmd 0x%02x returned " |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2705 | "unknown status %x\n", c->Request.CDB[0], |
| 2706 | c->err_info->CommandStatus); |
| 2707 | return_status = IO_ERROR; |
| 2708 | } |
scameron@beardog.cca.cpqcorp.net | 789a424 | 2009-06-08 16:05:56 -0500 | [diff] [blame] | 2709 | return return_status; |
| 2710 | } |
| 2711 | |
| 2712 | static int sendcmd_withirq_core(ctlr_info_t *h, CommandList_struct *c, |
| 2713 | int attempt_retry) |
| 2714 | { |
| 2715 | DECLARE_COMPLETION_ONSTACK(wait); |
| 2716 | u64bit buff_dma_handle; |
scameron@beardog.cca.cpqcorp.net | 789a424 | 2009-06-08 16:05:56 -0500 | [diff] [blame] | 2717 | int return_status = IO_OK; |
| 2718 | |
| 2719 | resend_cmd2: |
| 2720 | c->waiting = &wait; |
Mike Miller | 664a717 | 2010-06-02 12:57:58 -0700 | [diff] [blame] | 2721 | enqueue_cmd_and_start_io(h, c); |
scameron@beardog.cca.cpqcorp.net | 789a424 | 2009-06-08 16:05:56 -0500 | [diff] [blame] | 2722 | |
| 2723 | wait_for_completion(&wait); |
| 2724 | |
| 2725 | if (c->err_info->CommandStatus == 0 || !attempt_retry) |
| 2726 | goto command_done; |
| 2727 | |
| 2728 | return_status = process_sendcmd_error(h, c); |
| 2729 | |
| 2730 | if (return_status == IO_NEEDS_RETRY && |
| 2731 | c->retry_count < MAX_CMD_RETRIES) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2732 | dev_warn(&h->pdev->dev, "retrying 0x%02x\n", |
scameron@beardog.cca.cpqcorp.net | 789a424 | 2009-06-08 16:05:56 -0500 | [diff] [blame] | 2733 | c->Request.CDB[0]); |
| 2734 | c->retry_count++; |
| 2735 | /* erase the old error information */ |
| 2736 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); |
| 2737 | return_status = IO_OK; |
| 2738 | INIT_COMPLETION(wait); |
| 2739 | goto resend_cmd2; |
| 2740 | } |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2741 | |
| 2742 | command_done: |
| 2743 | /* unlock the buffers from DMA */ |
| 2744 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
| 2745 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; |
| 2746 | pci_unmap_single(h->pdev, (dma_addr_t) buff_dma_handle.val, |
| 2747 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); |
| 2748 | return return_status; |
| 2749 | } |
| 2750 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2751 | 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] | 2752 | __u8 page_code, unsigned char scsi3addr[], |
| 2753 | int cmd_type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2754 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2755 | CommandList_struct *c; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2756 | int return_status; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2757 | |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 2758 | c = cmd_special_alloc(h); |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2759 | if (!c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2760 | return -ENOMEM; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2761 | 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] | 2762 | scsi3addr, cmd_type); |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2763 | if (return_status == IO_OK) |
scameron@beardog.cca.cpqcorp.net | 789a424 | 2009-06-08 16:05:56 -0500 | [diff] [blame] | 2764 | return_status = sendcmd_withirq_core(h, c, 1); |
| 2765 | |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 2766 | cmd_special_free(h, c); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2767 | return return_status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2768 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2769 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2770 | static void cciss_geometry_inquiry(ctlr_info_t *h, int logvol, |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 2771 | sector_t total_size, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2772 | unsigned int block_size, |
| 2773 | InquiryData_struct *inq_buff, |
| 2774 | drive_info_struct *drv) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2775 | { |
| 2776 | int return_code; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2777 | unsigned long t; |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2778 | unsigned char scsi3addr[8]; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2779 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2780 | memset(inq_buff, 0, sizeof(InquiryData_struct)); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2781 | log_unit_to_scsi3addr(h, scsi3addr, logvol); |
| 2782 | return_code = sendcmd_withirq(h, CISS_INQUIRY, inq_buff, |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 2783 | sizeof(*inq_buff), 0xC1, scsi3addr, TYPE_CMD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2784 | if (return_code == IO_OK) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2785 | if (inq_buff->data_byte[8] == 0xFF) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2786 | dev_warn(&h->pdev->dev, |
| 2787 | "reading geometry failed, volume " |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2788 | "does not support reading geometry\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2789 | drv->heads = 255; |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 2790 | drv->sectors = 32; /* Sectors per track */ |
Mike Miller (OS Dev) | 7f42d3b | 2007-04-04 19:08:23 -0700 | [diff] [blame] | 2791 | drv->cylinders = total_size + 1; |
Mike Miller | 89f97ad | 2006-12-18 10:59:39 +0100 | [diff] [blame] | 2792 | drv->raid_level = RAID_UNKNOWN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2793 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2794 | drv->heads = inq_buff->data_byte[6]; |
| 2795 | drv->sectors = inq_buff->data_byte[7]; |
| 2796 | drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8; |
| 2797 | drv->cylinders += inq_buff->data_byte[5]; |
| 2798 | drv->raid_level = inq_buff->data_byte[8]; |
Matthew Wilcox | 3f7705e | 2006-10-21 10:24:19 -0700 | [diff] [blame] | 2799 | } |
| 2800 | drv->block_size = block_size; |
Mike Miller (OS Dev) | 97c0697 | 2007-03-06 01:42:14 -0800 | [diff] [blame] | 2801 | drv->nr_blocks = total_size + 1; |
Matthew Wilcox | 3f7705e | 2006-10-21 10:24:19 -0700 | [diff] [blame] | 2802 | t = drv->heads * drv->sectors; |
| 2803 | if (t > 1) { |
Mike Miller (OS Dev) | 97c0697 | 2007-03-06 01:42:14 -0800 | [diff] [blame] | 2804 | sector_t real_size = total_size + 1; |
| 2805 | unsigned long rem = sector_div(real_size, t); |
Matthew Wilcox | 3f7705e | 2006-10-21 10:24:19 -0700 | [diff] [blame] | 2806 | if (rem) |
Mike Miller (OS Dev) | 97c0697 | 2007-03-06 01:42:14 -0800 | [diff] [blame] | 2807 | real_size++; |
| 2808 | drv->cylinders = real_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2809 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2810 | } else { /* Get geometry failed */ |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2811 | dev_warn(&h->pdev->dev, "reading geometry failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2812 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2813 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2814 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2815 | static void |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2816 | 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] | 2817 | unsigned int *block_size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2818 | { |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2819 | ReadCapdata_struct *buf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2820 | int return_code; |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2821 | unsigned char scsi3addr[8]; |
Mariusz Kozlowski | 1aebe18 | 2007-08-11 22:34:29 +0200 | [diff] [blame] | 2822 | |
| 2823 | buf = kzalloc(sizeof(ReadCapdata_struct), GFP_KERNEL); |
| 2824 | if (!buf) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2825 | dev_warn(&h->pdev->dev, "out of memory\n"); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2826 | return; |
| 2827 | } |
Mariusz Kozlowski | 1aebe18 | 2007-08-11 22:34:29 +0200 | [diff] [blame] | 2828 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2829 | log_unit_to_scsi3addr(h, scsi3addr, logvol); |
| 2830 | return_code = sendcmd_withirq(h, CCISS_READ_CAPACITY, buf, |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 2831 | sizeof(ReadCapdata_struct), 0, scsi3addr, TYPE_CMD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2832 | if (return_code == IO_OK) { |
Al Viro | 4c1f2b31 | 2007-03-14 09:19:10 +0000 | [diff] [blame] | 2833 | *total_size = be32_to_cpu(*(__be32 *) buf->total_size); |
| 2834 | *block_size = be32_to_cpu(*(__be32 *) buf->block_size); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2835 | } else { /* read capacity command failed */ |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2836 | dev_warn(&h->pdev->dev, "read capacity failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2837 | *total_size = 0; |
| 2838 | *block_size = BLOCK_SIZE; |
| 2839 | } |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2840 | kfree(buf); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2841 | } |
| 2842 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2843 | 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] | 2844 | sector_t *total_size, unsigned int *block_size) |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2845 | { |
| 2846 | ReadCapdata_struct_16 *buf; |
| 2847 | int return_code; |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2848 | unsigned char scsi3addr[8]; |
Mariusz Kozlowski | 1aebe18 | 2007-08-11 22:34:29 +0200 | [diff] [blame] | 2849 | |
| 2850 | buf = kzalloc(sizeof(ReadCapdata_struct_16), GFP_KERNEL); |
| 2851 | if (!buf) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2852 | dev_warn(&h->pdev->dev, "out of memory\n"); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2853 | return; |
| 2854 | } |
Mariusz Kozlowski | 1aebe18 | 2007-08-11 22:34:29 +0200 | [diff] [blame] | 2855 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2856 | log_unit_to_scsi3addr(h, scsi3addr, logvol); |
| 2857 | return_code = sendcmd_withirq(h, CCISS_READ_CAPACITY_16, |
| 2858 | buf, sizeof(ReadCapdata_struct_16), |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 2859 | 0, scsi3addr, TYPE_CMD); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2860 | if (return_code == IO_OK) { |
Al Viro | 4c1f2b31 | 2007-03-14 09:19:10 +0000 | [diff] [blame] | 2861 | *total_size = be64_to_cpu(*(__be64 *) buf->total_size); |
| 2862 | *block_size = be32_to_cpu(*(__be32 *) buf->block_size); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2863 | } else { /* read capacity command failed */ |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2864 | dev_warn(&h->pdev->dev, "read capacity failed\n"); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2865 | *total_size = 0; |
| 2866 | *block_size = BLOCK_SIZE; |
| 2867 | } |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2868 | 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] | 2869 | (unsigned long long)*total_size+1, *block_size); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2870 | kfree(buf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2871 | } |
| 2872 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2873 | static int cciss_revalidate(struct gendisk *disk) |
| 2874 | { |
| 2875 | ctlr_info_t *h = get_host(disk); |
| 2876 | drive_info_struct *drv = get_drv(disk); |
| 2877 | int logvol; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2878 | int FOUND = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2879 | unsigned int block_size; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2880 | sector_t total_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2881 | InquiryData_struct *inq_buff = NULL; |
| 2882 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2883 | for (logvol = 0; logvol < CISS_MAX_LUN; logvol++) { |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2884 | if (memcmp(h->drv[logvol]->LunID, drv->LunID, |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 2885 | sizeof(drv->LunID)) == 0) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2886 | FOUND = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2887 | break; |
| 2888 | } |
| 2889 | } |
| 2890 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2891 | if (!FOUND) |
| 2892 | return 1; |
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 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
| 2895 | if (inq_buff == NULL) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2896 | dev_warn(&h->pdev->dev, "out of memory\n"); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2897 | return 1; |
| 2898 | } |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2899 | if (h->cciss_read == CCISS_READ_10) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2900 | cciss_read_capacity(h, logvol, |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2901 | &total_size, &block_size); |
| 2902 | } else { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2903 | cciss_read_capacity_16(h, logvol, |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2904 | &total_size, &block_size); |
| 2905 | } |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2906 | cciss_geometry_inquiry(h, logvol, total_size, block_size, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2907 | inq_buff, drv); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2908 | |
Martin K. Petersen | e1defc4 | 2009-05-22 17:17:49 -0400 | [diff] [blame] | 2909 | blk_queue_logical_block_size(drv->queue, drv->block_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2910 | set_capacity(disk, drv->nr_blocks); |
| 2911 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2912 | kfree(inq_buff); |
| 2913 | return 0; |
| 2914 | } |
| 2915 | |
| 2916 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2917 | * Map (physical) PCI mem into (virtual) kernel space |
| 2918 | */ |
| 2919 | static void __iomem *remap_pci_mem(ulong base, ulong size) |
| 2920 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2921 | ulong page_base = ((ulong) base) & PAGE_MASK; |
| 2922 | ulong page_offs = ((ulong) base) - page_base; |
| 2923 | void __iomem *page_remapped = ioremap(page_base, page_offs + size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2924 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2925 | return page_remapped ? (page_remapped + page_offs) : NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2926 | } |
| 2927 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2928 | /* |
| 2929 | * Takes jobs of the Q and sends them to the hardware, then puts it on |
| 2930 | * the Q to wait for completion. |
| 2931 | */ |
| 2932 | static void start_io(ctlr_info_t *h) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2933 | { |
| 2934 | CommandList_struct *c; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2935 | |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 2936 | while (!hlist_empty(&h->reqQ)) { |
| 2937 | c = hlist_entry(h->reqQ.first, CommandList_struct, list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2938 | /* can't do anything if fifo is full */ |
| 2939 | if ((h->access.fifo_full(h))) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2940 | dev_warn(&h->pdev->dev, "fifo full\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2941 | break; |
| 2942 | } |
| 2943 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2944 | /* Get the first entry from the Request Q */ |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 2945 | removeQ(c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2946 | h->Qdepth--; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2947 | |
| 2948 | /* Tell the controller execute command */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2949 | h->access.submit_command(h, c); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2950 | |
| 2951 | /* Put job onto the completed Q */ |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 2952 | addQ(&h->cmpQ, c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2953 | } |
| 2954 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2955 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2956 | /* Assumes that h->lock is held. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2957 | /* Zeros out the error record and then resends the command back */ |
| 2958 | /* to the controller */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2959 | 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] | 2960 | { |
| 2961 | /* erase the old error information */ |
| 2962 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); |
| 2963 | |
| 2964 | /* add it to software queue and then send it to the controller */ |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 2965 | addQ(&h->reqQ, c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2966 | h->Qdepth++; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2967 | if (h->Qdepth > h->maxQsinceinit) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2968 | h->maxQsinceinit = h->Qdepth; |
| 2969 | |
| 2970 | start_io(h); |
| 2971 | } |
Jens Axboe | a9925a0 | 2006-01-09 16:04:06 +0100 | [diff] [blame] | 2972 | |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2973 | static inline unsigned int make_status_bytes(unsigned int scsi_status_byte, |
| 2974 | unsigned int msg_byte, unsigned int host_byte, |
| 2975 | unsigned int driver_byte) |
| 2976 | { |
| 2977 | /* inverse of macros in scsi.h */ |
| 2978 | return (scsi_status_byte & 0xff) | |
| 2979 | ((msg_byte & 0xff) << 8) | |
| 2980 | ((host_byte & 0xff) << 16) | |
| 2981 | ((driver_byte & 0xff) << 24); |
| 2982 | } |
| 2983 | |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 2984 | static inline int evaluate_target_status(ctlr_info_t *h, |
| 2985 | CommandList_struct *cmd, int *retry_cmd) |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 2986 | { |
| 2987 | unsigned char sense_key; |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2988 | unsigned char status_byte, msg_byte, host_byte, driver_byte; |
| 2989 | int error_value; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 2990 | |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 2991 | *retry_cmd = 0; |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2992 | /* If we get in here, it means we got "target status", that is, scsi status */ |
| 2993 | status_byte = cmd->err_info->ScsiStatus; |
| 2994 | driver_byte = DRIVER_OK; |
| 2995 | msg_byte = cmd->err_info->CommandStatus; /* correct? seems too device specific */ |
| 2996 | |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 2997 | if (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2998 | host_byte = DID_PASSTHROUGH; |
| 2999 | else |
| 3000 | host_byte = DID_OK; |
| 3001 | |
| 3002 | error_value = make_status_bytes(status_byte, msg_byte, |
| 3003 | host_byte, driver_byte); |
| 3004 | |
| 3005 | if (cmd->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) { |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3006 | if (cmd->rq->cmd_type != REQ_TYPE_BLOCK_PC) |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3007 | dev_warn(&h->pdev->dev, "cmd %p " |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3008 | "has SCSI Status 0x%x\n", |
| 3009 | cmd, cmd->err_info->ScsiStatus); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3010 | return error_value; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3011 | } |
| 3012 | |
| 3013 | /* check the sense key */ |
| 3014 | sense_key = 0xf & cmd->err_info->SenseInfo[2]; |
| 3015 | /* no status or recovered error */ |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3016 | if (((sense_key == 0x0) || (sense_key == 0x1)) && |
| 3017 | (cmd->rq->cmd_type != REQ_TYPE_BLOCK_PC)) |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3018 | error_value = 0; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3019 | |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3020 | if (check_for_unit_attention(h, cmd)) { |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3021 | *retry_cmd = !(cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC); |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3022 | return 0; |
| 3023 | } |
| 3024 | |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3025 | /* Not SG_IO or similar? */ |
| 3026 | if (cmd->rq->cmd_type != REQ_TYPE_BLOCK_PC) { |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3027 | if (error_value != 0) |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3028 | dev_warn(&h->pdev->dev, "cmd %p has CHECK CONDITION" |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3029 | " sense key = 0x%x\n", cmd, sense_key); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3030 | return error_value; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3031 | } |
| 3032 | |
| 3033 | /* SG_IO or similar, copy sense data back */ |
| 3034 | if (cmd->rq->sense) { |
| 3035 | if (cmd->rq->sense_len > cmd->err_info->SenseLen) |
| 3036 | cmd->rq->sense_len = cmd->err_info->SenseLen; |
| 3037 | memcpy(cmd->rq->sense, cmd->err_info->SenseInfo, |
| 3038 | cmd->rq->sense_len); |
| 3039 | } else |
| 3040 | cmd->rq->sense_len = 0; |
| 3041 | |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3042 | return error_value; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3043 | } |
| 3044 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3045 | /* 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] | 3046 | * buffers for the completed job. Note that this function does not need |
| 3047 | * to hold the hba/queue lock. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3048 | */ |
| 3049 | static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd, |
| 3050 | int timeout) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3051 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3052 | int retry_cmd = 0; |
Mike Miller (OS Dev) | 198b766 | 2007-05-08 00:29:34 -0700 | [diff] [blame] | 3053 | struct request *rq = cmd->rq; |
| 3054 | |
| 3055 | rq->errors = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3056 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3057 | if (timeout) |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3058 | rq->errors = make_status_bytes(0, 0, 0, DRIVER_TIMEOUT); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3059 | |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3060 | if (cmd->err_info->CommandStatus == 0) /* no error has occurred */ |
| 3061 | goto after_error_processing; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3062 | |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3063 | switch (cmd->err_info->CommandStatus) { |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3064 | case CMD_TARGET_STATUS: |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3065 | rq->errors = evaluate_target_status(h, cmd, &retry_cmd); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3066 | break; |
| 3067 | case CMD_DATA_UNDERRUN: |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3068 | if (cmd->rq->cmd_type == REQ_TYPE_FS) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3069 | dev_warn(&h->pdev->dev, "cmd %p has" |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3070 | " completed with data underrun " |
| 3071 | "reported\n", cmd); |
Tejun Heo | c3a4d78 | 2009-05-07 22:24:37 +0900 | [diff] [blame] | 3072 | cmd->rq->resid_len = cmd->err_info->ResidualCnt; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3073 | } |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3074 | break; |
| 3075 | case CMD_DATA_OVERRUN: |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3076 | if (cmd->rq->cmd_type == REQ_TYPE_FS) |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3077 | dev_warn(&h->pdev->dev, "cciss: cmd %p has" |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3078 | " completed with data overrun " |
| 3079 | "reported\n", cmd); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3080 | break; |
| 3081 | case CMD_INVALID: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3082 | dev_warn(&h->pdev->dev, "cciss: cmd %p is " |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3083 | "reported invalid\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3084 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3085 | cmd->err_info->CommandStatus, DRIVER_OK, |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3086 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
| 3087 | DID_PASSTHROUGH : DID_ERROR); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3088 | break; |
| 3089 | case CMD_PROTOCOL_ERR: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3090 | dev_warn(&h->pdev->dev, "cciss: cmd %p has " |
| 3091 | "protocol error\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3092 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3093 | cmd->err_info->CommandStatus, DRIVER_OK, |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3094 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
| 3095 | DID_PASSTHROUGH : DID_ERROR); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3096 | break; |
| 3097 | case CMD_HARDWARE_ERR: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3098 | dev_warn(&h->pdev->dev, "cciss: cmd %p had " |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3099 | " hardware error\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3100 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3101 | cmd->err_info->CommandStatus, DRIVER_OK, |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3102 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
| 3103 | DID_PASSTHROUGH : DID_ERROR); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3104 | break; |
| 3105 | case CMD_CONNECTION_LOST: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3106 | dev_warn(&h->pdev->dev, "cciss: cmd %p had " |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3107 | "connection lost\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3108 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3109 | cmd->err_info->CommandStatus, DRIVER_OK, |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3110 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
| 3111 | DID_PASSTHROUGH : DID_ERROR); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3112 | break; |
| 3113 | case CMD_ABORTED: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3114 | dev_warn(&h->pdev->dev, "cciss: cmd %p was " |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3115 | "aborted\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3116 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3117 | cmd->err_info->CommandStatus, DRIVER_OK, |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3118 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
| 3119 | DID_PASSTHROUGH : DID_ABORT); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3120 | break; |
| 3121 | case CMD_ABORT_FAILED: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3122 | dev_warn(&h->pdev->dev, "cciss: cmd %p reports " |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3123 | "abort failed\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3124 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3125 | cmd->err_info->CommandStatus, DRIVER_OK, |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3126 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
| 3127 | DID_PASSTHROUGH : DID_ERROR); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3128 | break; |
| 3129 | case CMD_UNSOLICITED_ABORT: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3130 | dev_warn(&h->pdev->dev, "cciss%d: unsolicited " |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3131 | "abort %p\n", h->ctlr, cmd); |
| 3132 | if (cmd->retry_count < MAX_CMD_RETRIES) { |
| 3133 | retry_cmd = 1; |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3134 | dev_warn(&h->pdev->dev, "retrying %p\n", cmd); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3135 | cmd->retry_count++; |
| 3136 | } else |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3137 | dev_warn(&h->pdev->dev, |
| 3138 | "%p retried too many times\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3139 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3140 | cmd->err_info->CommandStatus, DRIVER_OK, |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3141 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
| 3142 | DID_PASSTHROUGH : DID_ABORT); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3143 | break; |
| 3144 | case CMD_TIMEOUT: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3145 | dev_warn(&h->pdev->dev, "cmd %p timedout\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3146 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3147 | cmd->err_info->CommandStatus, DRIVER_OK, |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3148 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
| 3149 | DID_PASSTHROUGH : DID_ERROR); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3150 | break; |
| 3151 | default: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3152 | dev_warn(&h->pdev->dev, "cmd %p returned " |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3153 | "unknown status %x\n", cmd, |
| 3154 | cmd->err_info->CommandStatus); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3155 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3156 | cmd->err_info->CommandStatus, DRIVER_OK, |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3157 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
| 3158 | DID_PASSTHROUGH : DID_ERROR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3159 | } |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3160 | |
| 3161 | after_error_processing: |
| 3162 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3163 | /* We need to return this command */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3164 | if (retry_cmd) { |
| 3165 | resend_cciss_cmd(h, cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3166 | return; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3167 | } |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3168 | cmd->rq->completion_data = cmd; |
Jens Axboe | a9925a0 | 2006-01-09 16:04:06 +0100 | [diff] [blame] | 3169 | blk_complete_request(cmd->rq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3170 | } |
| 3171 | |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3172 | static inline u32 cciss_tag_contains_index(u32 tag) |
| 3173 | { |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3174 | #define DIRECT_LOOKUP_BIT 0x10 |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3175 | return tag & DIRECT_LOOKUP_BIT; |
| 3176 | } |
| 3177 | |
| 3178 | static inline u32 cciss_tag_to_index(u32 tag) |
| 3179 | { |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3180 | #define DIRECT_LOOKUP_SHIFT 5 |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3181 | return tag >> DIRECT_LOOKUP_SHIFT; |
| 3182 | } |
| 3183 | |
| 3184 | static inline u32 cciss_tag_discard_error_bits(u32 tag) |
| 3185 | { |
| 3186 | #define CCISS_ERROR_BITS 0x03 |
| 3187 | return tag & ~CCISS_ERROR_BITS; |
| 3188 | } |
| 3189 | |
| 3190 | static inline void cciss_mark_tag_indexed(u32 *tag) |
| 3191 | { |
| 3192 | *tag |= DIRECT_LOOKUP_BIT; |
| 3193 | } |
| 3194 | |
| 3195 | static inline void cciss_set_tag_index(u32 *tag, u32 index) |
| 3196 | { |
| 3197 | *tag |= (index << DIRECT_LOOKUP_SHIFT); |
| 3198 | } |
| 3199 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3200 | /* |
| 3201 | * Get a request and submit it to the controller. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3202 | */ |
Jens Axboe | 165125e | 2007-07-24 09:28:11 +0200 | [diff] [blame] | 3203 | static void do_cciss_request(struct request_queue *q) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3204 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3205 | ctlr_info_t *h = q->queuedata; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3206 | CommandList_struct *c; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 3207 | sector_t start_blk; |
| 3208 | int seg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3209 | struct request *creq; |
| 3210 | u64bit temp64; |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3211 | struct scatterlist *tmp_sg; |
| 3212 | SGDescriptor_struct *curr_sg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3213 | drive_info_struct *drv; |
| 3214 | int i, dir; |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3215 | int sg_index = 0; |
| 3216 | int chained = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3217 | |
| 3218 | /* We call start_io here in case there is a command waiting on the |
| 3219 | * queue that has not been sent. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3220 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3221 | if (blk_queue_plugged(q)) |
| 3222 | goto startio; |
| 3223 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3224 | queue: |
Tejun Heo | 9934c8c | 2009-05-08 11:54:16 +0900 | [diff] [blame] | 3225 | creq = blk_peek_request(q); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3226 | if (!creq) |
| 3227 | goto startio; |
| 3228 | |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3229 | BUG_ON(creq->nr_phys_segments > h->maxsgentries); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3230 | |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 3231 | c = cmd_alloc(h); |
| 3232 | if (!c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3233 | goto full; |
| 3234 | |
Tejun Heo | 9934c8c | 2009-05-08 11:54:16 +0900 | [diff] [blame] | 3235 | blk_start_request(creq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3236 | |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3237 | tmp_sg = h->scatter_list[c->cmdindex]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3238 | spin_unlock_irq(q->queue_lock); |
| 3239 | |
| 3240 | c->cmd_type = CMD_RWREQ; |
| 3241 | c->rq = creq; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3242 | |
| 3243 | /* fill in the request */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3244 | drv = creq->rq_disk->private_data; |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 3245 | c->Header.ReplyQueue = 0; /* unused in simple mode */ |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 3246 | /* got command from pool, so use the command block index instead */ |
| 3247 | /* for direct lookups. */ |
| 3248 | /* The first 2 bits are reserved for controller error reporting. */ |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3249 | cciss_set_tag_index(&c->Header.Tag.lower, c->cmdindex); |
| 3250 | cciss_mark_tag_indexed(&c->Header.Tag.lower); |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 3251 | memcpy(&c->Header.LUN, drv->LunID, sizeof(drv->LunID)); |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 3252 | c->Request.CDBLen = 10; /* 12 byte commands not in FW yet; */ |
| 3253 | c->Request.Type.Type = TYPE_CMD; /* It is a command. */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3254 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 3255 | c->Request.Type.Direction = |
Mike Miller | a52de24 | 2006-12-18 11:00:14 +0100 | [diff] [blame] | 3256 | (rq_data_dir(creq) == READ) ? XFER_READ : XFER_WRITE; |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 3257 | c->Request.Timeout = 0; /* Don't time out */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3258 | c->Request.CDB[0] = |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 3259 | (rq_data_dir(creq) == READ) ? h->cciss_read : h->cciss_write; |
Tejun Heo | 83096eb | 2009-05-07 22:24:39 +0900 | [diff] [blame] | 3260 | start_blk = blk_rq_pos(creq); |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3261 | dev_dbg(&h->pdev->dev, "sector =%d nr_sectors=%d\n", |
Tejun Heo | 83096eb | 2009-05-07 22:24:39 +0900 | [diff] [blame] | 3262 | (int)blk_rq_pos(creq), (int)blk_rq_sectors(creq)); |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3263 | sg_init_table(tmp_sg, h->maxsgentries); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3264 | seg = blk_rq_map_sg(q, creq, tmp_sg); |
| 3265 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3266 | /* get the DMA records for the setup */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3267 | if (c->Request.Type.Direction == XFER_READ) |
| 3268 | dir = PCI_DMA_FROMDEVICE; |
| 3269 | else |
| 3270 | dir = PCI_DMA_TODEVICE; |
| 3271 | |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3272 | curr_sg = c->SG; |
| 3273 | sg_index = 0; |
| 3274 | chained = 0; |
| 3275 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3276 | for (i = 0; i < seg; i++) { |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3277 | if (((sg_index+1) == (h->max_cmd_sgentries)) && |
| 3278 | !chained && ((seg - i) > 1)) { |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3279 | /* Point to next chain block. */ |
Stephen M. Cameron | dccc9b5 | 2010-02-26 16:01:27 -0600 | [diff] [blame] | 3280 | curr_sg = h->cmd_sg_list[c->cmdindex]; |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3281 | sg_index = 0; |
| 3282 | chained = 1; |
| 3283 | } |
| 3284 | curr_sg[sg_index].Len = tmp_sg[i].length; |
Jens Axboe | 45711f1 | 2007-10-22 21:19:53 +0200 | [diff] [blame] | 3285 | 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] | 3286 | tmp_sg[i].offset, |
| 3287 | tmp_sg[i].length, dir); |
| 3288 | curr_sg[sg_index].Addr.lower = temp64.val32.lower; |
| 3289 | curr_sg[sg_index].Addr.upper = temp64.val32.upper; |
| 3290 | curr_sg[sg_index].Ext = 0; /* we are not chaining */ |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3291 | ++sg_index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3292 | } |
Stephen M. Cameron | d45033e | 2010-02-26 16:01:37 -0600 | [diff] [blame] | 3293 | if (chained) |
| 3294 | cciss_map_sg_chain_block(h, c, h->cmd_sg_list[c->cmdindex], |
| 3295 | (seg - (h->max_cmd_sgentries - 1)) * |
| 3296 | sizeof(SGDescriptor_struct)); |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3297 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3298 | /* track how many SG entries we are using */ |
| 3299 | if (seg > h->maxSG) |
| 3300 | h->maxSG = seg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3301 | |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3302 | dev_dbg(&h->pdev->dev, "Submitting %u sectors in %d segments " |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3303 | "chained[%d]\n", |
| 3304 | blk_rq_sectors(creq), seg, chained); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3305 | |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3306 | c->Header.SGTotal = seg + chained; |
| 3307 | if (seg <= h->max_cmd_sgentries) |
| 3308 | c->Header.SGList = c->Header.SGTotal; |
| 3309 | else |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3310 | c->Header.SGList = h->max_cmd_sgentries; |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3311 | set_performant_mode(h, c); |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3312 | |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3313 | if (likely(creq->cmd_type == REQ_TYPE_FS)) { |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3314 | if(h->cciss_read == CCISS_READ_10) { |
| 3315 | c->Request.CDB[1] = 0; |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 3316 | c->Request.CDB[2] = (start_blk >> 24) & 0xff; /* MSB */ |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3317 | c->Request.CDB[3] = (start_blk >> 16) & 0xff; |
| 3318 | c->Request.CDB[4] = (start_blk >> 8) & 0xff; |
| 3319 | c->Request.CDB[5] = start_blk & 0xff; |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 3320 | c->Request.CDB[6] = 0; /* (sect >> 24) & 0xff; MSB */ |
Tejun Heo | 83096eb | 2009-05-07 22:24:39 +0900 | [diff] [blame] | 3321 | c->Request.CDB[7] = (blk_rq_sectors(creq) >> 8) & 0xff; |
| 3322 | c->Request.CDB[8] = blk_rq_sectors(creq) & 0xff; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3323 | c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0; |
| 3324 | } else { |
Randy Dunlap | 582539e | 2008-02-06 01:36:54 -0800 | [diff] [blame] | 3325 | u32 upper32 = upper_32_bits(start_blk); |
| 3326 | |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3327 | c->Request.CDBLen = 16; |
| 3328 | c->Request.CDB[1]= 0; |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 3329 | c->Request.CDB[2]= (upper32 >> 24) & 0xff; /* MSB */ |
Randy Dunlap | 582539e | 2008-02-06 01:36:54 -0800 | [diff] [blame] | 3330 | c->Request.CDB[3]= (upper32 >> 16) & 0xff; |
| 3331 | c->Request.CDB[4]= (upper32 >> 8) & 0xff; |
| 3332 | c->Request.CDB[5]= upper32 & 0xff; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3333 | c->Request.CDB[6]= (start_blk >> 24) & 0xff; |
| 3334 | c->Request.CDB[7]= (start_blk >> 16) & 0xff; |
| 3335 | c->Request.CDB[8]= (start_blk >> 8) & 0xff; |
| 3336 | c->Request.CDB[9]= start_blk & 0xff; |
Tejun Heo | 83096eb | 2009-05-07 22:24:39 +0900 | [diff] [blame] | 3337 | c->Request.CDB[10]= (blk_rq_sectors(creq) >> 24) & 0xff; |
| 3338 | c->Request.CDB[11]= (blk_rq_sectors(creq) >> 16) & 0xff; |
| 3339 | c->Request.CDB[12]= (blk_rq_sectors(creq) >> 8) & 0xff; |
| 3340 | c->Request.CDB[13]= blk_rq_sectors(creq) & 0xff; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3341 | c->Request.CDB[14] = c->Request.CDB[15] = 0; |
| 3342 | } |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3343 | } else if (creq->cmd_type == REQ_TYPE_BLOCK_PC) { |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3344 | c->Request.CDBLen = creq->cmd_len; |
| 3345 | memcpy(c->Request.CDB, creq->cmd, BLK_MAX_CDB); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 3346 | } else { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3347 | dev_warn(&h->pdev->dev, "bad request type %d\n", |
| 3348 | creq->cmd_type); |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3349 | BUG(); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 3350 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3351 | |
| 3352 | spin_lock_irq(q->queue_lock); |
| 3353 | |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 3354 | addQ(&h->reqQ, c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3355 | h->Qdepth++; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3356 | if (h->Qdepth > h->maxQsinceinit) |
| 3357 | h->maxQsinceinit = h->Qdepth; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3358 | |
| 3359 | goto queue; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 3360 | full: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3361 | blk_stop_queue(q); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 3362 | startio: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3363 | /* We will already have the driver lock here so not need |
| 3364 | * to lock it. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3365 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3366 | start_io(h); |
| 3367 | } |
| 3368 | |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3369 | static inline unsigned long get_next_completion(ctlr_info_t *h) |
| 3370 | { |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3371 | return h->access.command_completed(h); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3372 | } |
| 3373 | |
| 3374 | static inline int interrupt_pending(ctlr_info_t *h) |
| 3375 | { |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3376 | return h->access.intr_pending(h); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3377 | } |
| 3378 | |
| 3379 | static inline long interrupt_not_for_us(ctlr_info_t *h) |
| 3380 | { |
Stephen M. Cameron | 8112586 | 2010-07-19 13:46:54 -0500 | [diff] [blame] | 3381 | return ((h->access.intr_pending(h) == 0) || |
Mike Miller | 2cf3af1 | 2010-06-02 12:58:02 -0700 | [diff] [blame] | 3382 | (h->interrupts_enabled == 0)); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3383 | } |
| 3384 | |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3385 | static inline int bad_tag(ctlr_info_t *h, u32 tag_index, |
| 3386 | u32 raw_tag) |
| 3387 | { |
| 3388 | if (unlikely(tag_index >= h->nr_cmds)) { |
| 3389 | dev_warn(&h->pdev->dev, "bad tag 0x%08x ignored.\n", raw_tag); |
| 3390 | return 1; |
| 3391 | } |
| 3392 | return 0; |
| 3393 | } |
| 3394 | |
| 3395 | static inline void finish_cmd(ctlr_info_t *h, CommandList_struct *c, |
| 3396 | u32 raw_tag) |
| 3397 | { |
| 3398 | removeQ(c); |
| 3399 | if (likely(c->cmd_type == CMD_RWREQ)) |
| 3400 | complete_command(h, c, 0); |
| 3401 | else if (c->cmd_type == CMD_IOCTL_PEND) |
| 3402 | complete(c->waiting); |
| 3403 | #ifdef CONFIG_CISS_SCSI_TAPE |
| 3404 | else if (c->cmd_type == CMD_SCSI) |
| 3405 | complete_scsi_command(c, 0, raw_tag); |
| 3406 | #endif |
| 3407 | } |
| 3408 | |
Mike Miller | 29979a7 | 2010-06-11 13:13:35 +0200 | [diff] [blame] | 3409 | static inline u32 next_command(ctlr_info_t *h) |
| 3410 | { |
| 3411 | u32 a; |
| 3412 | |
| 3413 | if (unlikely(h->transMethod != CFGTBL_Trans_Performant)) |
| 3414 | return h->access.command_completed(h); |
| 3415 | |
| 3416 | if ((*(h->reply_pool_head) & 1) == (h->reply_pool_wraparound)) { |
| 3417 | a = *(h->reply_pool_head); /* Next cmd in ring buffer */ |
| 3418 | (h->reply_pool_head)++; |
| 3419 | h->commands_outstanding--; |
| 3420 | } else { |
| 3421 | a = FIFO_EMPTY; |
| 3422 | } |
| 3423 | /* Check for wraparound */ |
| 3424 | if (h->reply_pool_head == (h->reply_pool + h->max_commands)) { |
| 3425 | h->reply_pool_head = h->reply_pool; |
| 3426 | h->reply_pool_wraparound ^= 1; |
| 3427 | } |
| 3428 | return a; |
| 3429 | } |
| 3430 | |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3431 | /* process completion of an indexed ("direct lookup") command */ |
| 3432 | static inline u32 process_indexed_cmd(ctlr_info_t *h, u32 raw_tag) |
| 3433 | { |
| 3434 | u32 tag_index; |
| 3435 | CommandList_struct *c; |
| 3436 | |
| 3437 | tag_index = cciss_tag_to_index(raw_tag); |
| 3438 | if (bad_tag(h, tag_index, raw_tag)) |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3439 | return next_command(h); |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3440 | c = h->cmd_pool + tag_index; |
| 3441 | finish_cmd(h, c, raw_tag); |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3442 | return next_command(h); |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3443 | } |
| 3444 | |
| 3445 | /* process completion of a non-indexed command */ |
| 3446 | static inline u32 process_nonindexed_cmd(ctlr_info_t *h, u32 raw_tag) |
| 3447 | { |
| 3448 | u32 tag; |
| 3449 | CommandList_struct *c = NULL; |
| 3450 | struct hlist_node *tmp; |
| 3451 | __u32 busaddr_masked, tag_masked; |
| 3452 | |
| 3453 | tag = cciss_tag_discard_error_bits(raw_tag); |
| 3454 | hlist_for_each_entry(c, tmp, &h->cmpQ, list) { |
| 3455 | busaddr_masked = cciss_tag_discard_error_bits(c->busaddr); |
| 3456 | tag_masked = cciss_tag_discard_error_bits(tag); |
| 3457 | if (busaddr_masked == tag_masked) { |
| 3458 | finish_cmd(h, c, raw_tag); |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3459 | return next_command(h); |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3460 | } |
| 3461 | } |
| 3462 | bad_tag(h, h->nr_cmds + 1, raw_tag); |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3463 | return next_command(h); |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3464 | } |
| 3465 | |
| 3466 | static irqreturn_t do_cciss_intx(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3467 | { |
| 3468 | ctlr_info_t *h = dev_id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3469 | unsigned long flags; |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3470 | u32 raw_tag; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3471 | |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3472 | if (interrupt_not_for_us(h)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3473 | return IRQ_NONE; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 3474 | spin_lock_irqsave(&h->lock, flags); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3475 | while (interrupt_pending(h)) { |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3476 | raw_tag = get_next_completion(h); |
| 3477 | while (raw_tag != FIFO_EMPTY) { |
| 3478 | if (cciss_tag_contains_index(raw_tag)) |
| 3479 | raw_tag = process_indexed_cmd(h, raw_tag); |
| 3480 | else |
| 3481 | raw_tag = process_nonindexed_cmd(h, raw_tag); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3482 | } |
| 3483 | } |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 3484 | spin_unlock_irqrestore(&h->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3485 | return IRQ_HANDLED; |
| 3486 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3487 | |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3488 | /* Add a second interrupt handler for MSI/MSI-X mode. In this mode we never |
| 3489 | * check the interrupt pending register because it is not set. |
| 3490 | */ |
| 3491 | static irqreturn_t do_cciss_msix_intr(int irq, void *dev_id) |
| 3492 | { |
| 3493 | ctlr_info_t *h = dev_id; |
| 3494 | unsigned long flags; |
| 3495 | u32 raw_tag; |
| 3496 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 3497 | spin_lock_irqsave(&h->lock, flags); |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3498 | raw_tag = get_next_completion(h); |
| 3499 | while (raw_tag != FIFO_EMPTY) { |
| 3500 | if (cciss_tag_contains_index(raw_tag)) |
| 3501 | raw_tag = process_indexed_cmd(h, raw_tag); |
| 3502 | else |
| 3503 | raw_tag = process_nonindexed_cmd(h, raw_tag); |
| 3504 | } |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 3505 | spin_unlock_irqrestore(&h->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3506 | return IRQ_HANDLED; |
| 3507 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3508 | |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3509 | /** |
| 3510 | * add_to_scan_list() - add controller to rescan queue |
| 3511 | * @h: Pointer to the controller. |
| 3512 | * |
| 3513 | * Adds the controller to the rescan queue if not already on the queue. |
| 3514 | * |
| 3515 | * returns 1 if added to the queue, 0 if skipped (could be on the |
| 3516 | * queue already, or the controller could be initializing or shutting |
| 3517 | * down). |
| 3518 | **/ |
| 3519 | static int add_to_scan_list(struct ctlr_info *h) |
| 3520 | { |
| 3521 | struct ctlr_info *test_h; |
| 3522 | int found = 0; |
| 3523 | int ret = 0; |
| 3524 | |
| 3525 | if (h->busy_initializing) |
| 3526 | return 0; |
| 3527 | |
| 3528 | if (!mutex_trylock(&h->busy_shutting_down)) |
| 3529 | return 0; |
| 3530 | |
| 3531 | mutex_lock(&scan_mutex); |
| 3532 | list_for_each_entry(test_h, &scan_q, scan_list) { |
| 3533 | if (test_h == h) { |
| 3534 | found = 1; |
| 3535 | break; |
| 3536 | } |
| 3537 | } |
| 3538 | if (!found && !h->busy_scanning) { |
| 3539 | INIT_COMPLETION(h->scan_wait); |
| 3540 | list_add_tail(&h->scan_list, &scan_q); |
| 3541 | ret = 1; |
| 3542 | } |
| 3543 | mutex_unlock(&scan_mutex); |
| 3544 | mutex_unlock(&h->busy_shutting_down); |
| 3545 | |
| 3546 | return ret; |
| 3547 | } |
| 3548 | |
| 3549 | /** |
| 3550 | * remove_from_scan_list() - remove controller from rescan queue |
| 3551 | * @h: Pointer to the controller. |
| 3552 | * |
| 3553 | * Removes the controller from the rescan queue if present. Blocks if |
Stephen M. Cameron | fd8489c | 2009-11-12 12:49:19 -0600 | [diff] [blame] | 3554 | * the controller is currently conducting a rescan. The controller |
| 3555 | * can be in one of three states: |
| 3556 | * 1. Doesn't need a scan |
| 3557 | * 2. On the scan list, but not scanning yet (we remove it) |
| 3558 | * 3. Busy scanning (and not on the list). In this case we want to wait for |
| 3559 | * the scan to complete to make sure the scanning thread for this |
| 3560 | * controller is completely idle. |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3561 | **/ |
| 3562 | static void remove_from_scan_list(struct ctlr_info *h) |
| 3563 | { |
| 3564 | struct ctlr_info *test_h, *tmp_h; |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3565 | |
| 3566 | mutex_lock(&scan_mutex); |
| 3567 | 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] | 3568 | if (test_h == h) { /* state 2. */ |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3569 | list_del(&h->scan_list); |
| 3570 | complete_all(&h->scan_wait); |
| 3571 | mutex_unlock(&scan_mutex); |
| 3572 | return; |
| 3573 | } |
| 3574 | } |
Stephen M. Cameron | fd8489c | 2009-11-12 12:49:19 -0600 | [diff] [blame] | 3575 | if (h->busy_scanning) { /* state 3. */ |
| 3576 | mutex_unlock(&scan_mutex); |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3577 | wait_for_completion(&h->scan_wait); |
Stephen M. Cameron | fd8489c | 2009-11-12 12:49:19 -0600 | [diff] [blame] | 3578 | } else { /* state 1, nothing to do. */ |
| 3579 | mutex_unlock(&scan_mutex); |
| 3580 | } |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3581 | } |
| 3582 | |
| 3583 | /** |
| 3584 | * scan_thread() - kernel thread used to rescan controllers |
| 3585 | * @data: Ignored. |
| 3586 | * |
| 3587 | * A kernel thread used scan for drive topology changes on |
| 3588 | * controllers. The thread processes only one controller at a time |
| 3589 | * using a queue. Controllers are added to the queue using |
| 3590 | * add_to_scan_list() and removed from the queue either after done |
| 3591 | * processing or using remove_from_scan_list(). |
| 3592 | * |
| 3593 | * returns 0. |
| 3594 | **/ |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3595 | static int scan_thread(void *data) |
| 3596 | { |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3597 | struct ctlr_info *h; |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3598 | |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3599 | while (1) { |
| 3600 | set_current_state(TASK_INTERRUPTIBLE); |
| 3601 | schedule(); |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3602 | if (kthread_should_stop()) |
| 3603 | break; |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3604 | |
| 3605 | while (1) { |
| 3606 | mutex_lock(&scan_mutex); |
| 3607 | if (list_empty(&scan_q)) { |
| 3608 | mutex_unlock(&scan_mutex); |
| 3609 | break; |
| 3610 | } |
| 3611 | |
| 3612 | h = list_entry(scan_q.next, |
| 3613 | struct ctlr_info, |
| 3614 | scan_list); |
| 3615 | list_del(&h->scan_list); |
| 3616 | h->busy_scanning = 1; |
| 3617 | mutex_unlock(&scan_mutex); |
| 3618 | |
Stephen M. Cameron | d06dfbd | 2009-11-12 12:49:50 -0600 | [diff] [blame] | 3619 | rebuild_lun_table(h, 0, 0); |
| 3620 | complete_all(&h->scan_wait); |
| 3621 | mutex_lock(&scan_mutex); |
| 3622 | h->busy_scanning = 0; |
| 3623 | mutex_unlock(&scan_mutex); |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3624 | } |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3625 | } |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3626 | |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3627 | return 0; |
| 3628 | } |
| 3629 | |
| 3630 | static int check_for_unit_attention(ctlr_info_t *h, CommandList_struct *c) |
| 3631 | { |
| 3632 | if (c->err_info->SenseInfo[2] != UNIT_ATTENTION) |
| 3633 | return 0; |
| 3634 | |
| 3635 | switch (c->err_info->SenseInfo[12]) { |
| 3636 | case STATE_CHANGED: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3637 | dev_warn(&h->pdev->dev, "a state change " |
| 3638 | "detected, command retried\n"); |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3639 | return 1; |
| 3640 | break; |
| 3641 | case LUN_FAILED: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3642 | dev_warn(&h->pdev->dev, "LUN failure " |
| 3643 | "detected, action required\n"); |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3644 | return 1; |
| 3645 | break; |
| 3646 | case REPORT_LUNS_CHANGED: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3647 | dev_warn(&h->pdev->dev, "report LUN data changed\n"); |
Stephen M. Cameron | da00218 | 2009-11-12 12:49:55 -0600 | [diff] [blame] | 3648 | /* |
| 3649 | * Here, we could call add_to_scan_list and wake up the scan thread, |
| 3650 | * except that it's quite likely that we will get more than one |
| 3651 | * REPORT_LUNS_CHANGED condition in quick succession, which means |
| 3652 | * that those which occur after the first one will likely happen |
| 3653 | * *during* the scan_thread's rescan. And the rescan code is not |
| 3654 | * robust enough to restart in the middle, undoing what it has already |
| 3655 | * done, and it's not clear that it's even possible to do this, since |
| 3656 | * part of what it does is notify the block layer, which starts |
| 3657 | * doing it's own i/o to read partition tables and so on, and the |
| 3658 | * driver doesn't have visibility to know what might need undoing. |
| 3659 | * In any event, if possible, it is horribly complicated to get right |
| 3660 | * so we just don't do it for now. |
| 3661 | * |
| 3662 | * Note: this REPORT_LUNS_CHANGED condition only occurs on the MSA2012. |
| 3663 | */ |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3664 | return 1; |
| 3665 | break; |
| 3666 | case POWER_OR_RESET: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3667 | dev_warn(&h->pdev->dev, |
| 3668 | "a power on or device reset detected\n"); |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3669 | return 1; |
| 3670 | break; |
| 3671 | case UNIT_ATTENTION_CLEARED: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3672 | dev_warn(&h->pdev->dev, |
| 3673 | "unit attention cleared by another initiator\n"); |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3674 | return 1; |
| 3675 | break; |
| 3676 | default: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3677 | dev_warn(&h->pdev->dev, "unknown unit attention detected\n"); |
| 3678 | return 1; |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3679 | } |
| 3680 | } |
| 3681 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3682 | /* |
Bjorn Helgaas | d14c4ab | 2006-06-25 05:49:04 -0700 | [diff] [blame] | 3683 | * We cannot read the structure directly, for portability we must use |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3684 | * the io functions. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3685 | * This is for debug only. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3686 | */ |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3687 | static void print_cfg_table(ctlr_info_t *h) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3688 | { |
| 3689 | int i; |
| 3690 | char temp_name[17]; |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3691 | CfgTable_struct *tb = h->cfgtable; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3692 | |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3693 | dev_dbg(&h->pdev->dev, "Controller Configuration information\n"); |
| 3694 | dev_dbg(&h->pdev->dev, "------------------------------------\n"); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3695 | for (i = 0; i < 4; i++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3696 | temp_name[i] = readb(&(tb->Signature[i])); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3697 | temp_name[4] = '\0'; |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3698 | dev_dbg(&h->pdev->dev, " Signature = %s\n", temp_name); |
| 3699 | dev_dbg(&h->pdev->dev, " Spec Number = %d\n", |
| 3700 | readl(&(tb->SpecValence))); |
| 3701 | dev_dbg(&h->pdev->dev, " Transport methods supported = 0x%x\n", |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3702 | readl(&(tb->TransportSupport))); |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3703 | dev_dbg(&h->pdev->dev, " Transport methods active = 0x%x\n", |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3704 | readl(&(tb->TransportActive))); |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3705 | dev_dbg(&h->pdev->dev, " Requested transport Method = 0x%x\n", |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3706 | readl(&(tb->HostWrite.TransportRequest))); |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3707 | dev_dbg(&h->pdev->dev, " Coalesce Interrupt Delay = 0x%x\n", |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3708 | readl(&(tb->HostWrite.CoalIntDelay))); |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3709 | dev_dbg(&h->pdev->dev, " Coalesce Interrupt Count = 0x%x\n", |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3710 | readl(&(tb->HostWrite.CoalIntCount))); |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3711 | dev_dbg(&h->pdev->dev, " Max outstanding commands = 0x%d\n", |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3712 | readl(&(tb->CmdsOutMax))); |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3713 | dev_dbg(&h->pdev->dev, " Bus Types = 0x%x\n", |
| 3714 | readl(&(tb->BusTypes))); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3715 | for (i = 0; i < 16; i++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3716 | temp_name[i] = readb(&(tb->ServerName[i])); |
| 3717 | temp_name[16] = '\0'; |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3718 | dev_dbg(&h->pdev->dev, " Server Name = %s\n", temp_name); |
| 3719 | dev_dbg(&h->pdev->dev, " Heartbeat Counter = 0x%x\n\n\n", |
| 3720 | readl(&(tb->HeartBeat))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3721 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3722 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3723 | 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] | 3724 | { |
| 3725 | int i, offset, mem_type, bar_type; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3726 | if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3727 | return 0; |
| 3728 | offset = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3729 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { |
| 3730 | bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3731 | if (bar_type == PCI_BASE_ADDRESS_SPACE_IO) |
| 3732 | offset += 4; |
| 3733 | else { |
| 3734 | mem_type = pci_resource_flags(pdev, i) & |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3735 | PCI_BASE_ADDRESS_MEM_TYPE_MASK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3736 | switch (mem_type) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3737 | case PCI_BASE_ADDRESS_MEM_TYPE_32: |
| 3738 | case PCI_BASE_ADDRESS_MEM_TYPE_1M: |
| 3739 | offset += 4; /* 32 bit */ |
| 3740 | break; |
| 3741 | case PCI_BASE_ADDRESS_MEM_TYPE_64: |
| 3742 | offset += 8; |
| 3743 | break; |
| 3744 | default: /* reserved in PCI 2.2 */ |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3745 | dev_warn(&pdev->dev, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3746 | "Base address is invalid\n"); |
| 3747 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3748 | break; |
| 3749 | } |
| 3750 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3751 | if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0) |
| 3752 | return i + 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3753 | } |
| 3754 | return -1; |
| 3755 | } |
| 3756 | |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3757 | /* Fill in bucket_map[], given nsgs (the max number of |
| 3758 | * scatter gather elements supported) and bucket[], |
| 3759 | * which is an array of 8 integers. The bucket[] array |
| 3760 | * contains 8 different DMA transfer sizes (in 16 |
| 3761 | * byte increments) which the controller uses to fetch |
| 3762 | * commands. This function fills in bucket_map[], which |
| 3763 | * maps a given number of scatter gather elements to one of |
| 3764 | * the 8 DMA transfer sizes. The point of it is to allow the |
| 3765 | * controller to only do as much DMA as needed to fetch the |
| 3766 | * command, with the DMA transfer size encoded in the lower |
| 3767 | * bits of the command address. |
| 3768 | */ |
| 3769 | static void calc_bucket_map(int bucket[], int num_buckets, |
| 3770 | int nsgs, int *bucket_map) |
| 3771 | { |
| 3772 | int i, j, b, size; |
| 3773 | |
| 3774 | /* even a command with 0 SGs requires 4 blocks */ |
| 3775 | #define MINIMUM_TRANSFER_BLOCKS 4 |
| 3776 | #define NUM_BUCKETS 8 |
| 3777 | /* Note, bucket_map must have nsgs+1 entries. */ |
| 3778 | for (i = 0; i <= nsgs; i++) { |
| 3779 | /* Compute size of a command with i SG entries */ |
| 3780 | size = i + MINIMUM_TRANSFER_BLOCKS; |
| 3781 | b = num_buckets; /* Assume the biggest bucket */ |
| 3782 | /* Find the bucket that is just big enough */ |
| 3783 | for (j = 0; j < 8; j++) { |
| 3784 | if (bucket[j] >= size) { |
| 3785 | b = j; |
| 3786 | break; |
| 3787 | } |
| 3788 | } |
| 3789 | /* for a command with i SG entries, use bucket b. */ |
| 3790 | bucket_map[i] = b; |
| 3791 | } |
| 3792 | } |
| 3793 | |
Stephen M. Cameron | 0f8a6a1 | 2010-07-19 13:46:01 -0500 | [diff] [blame] | 3794 | static void __devinit cciss_wait_for_mode_change_ack(ctlr_info_t *h) |
| 3795 | { |
| 3796 | int i; |
| 3797 | |
| 3798 | /* under certain very rare conditions, this can take awhile. |
| 3799 | * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right |
| 3800 | * as we enter this code.) */ |
| 3801 | for (i = 0; i < MAX_CONFIG_WAIT; i++) { |
| 3802 | if (!(readl(h->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq)) |
| 3803 | break; |
| 3804 | msleep(10); |
| 3805 | } |
| 3806 | } |
| 3807 | |
Stephen M. Cameron | b993313 | 2010-07-19 13:46:07 -0500 | [diff] [blame] | 3808 | static __devinit void cciss_enter_performant_mode(ctlr_info_t *h) |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3809 | { |
Stephen M. Cameron | b993313 | 2010-07-19 13:46:07 -0500 | [diff] [blame] | 3810 | /* This is a bit complicated. There are 8 registers on |
| 3811 | * the controller which we write to to tell it 8 different |
| 3812 | * sizes of commands which there may be. It's a way of |
| 3813 | * reducing the DMA done to fetch each command. Encoded into |
| 3814 | * each command's tag are 3 bits which communicate to the controller |
| 3815 | * which of the eight sizes that command fits within. The size of |
| 3816 | * each command depends on how many scatter gather entries there are. |
| 3817 | * Each SG entry requires 16 bytes. The eight registers are programmed |
| 3818 | * with the number of 16-byte blocks a command of that size requires. |
| 3819 | * The smallest command possible requires 5 such 16 byte blocks. |
| 3820 | * the largest command possible requires MAXSGENTRIES + 4 16-byte |
| 3821 | * blocks. Note, this only extends to the SG entries contained |
| 3822 | * within the command block, and does not extend to chained blocks |
| 3823 | * of SG elements. bft[] contains the eight values we write to |
| 3824 | * the registers. They are not evenly distributed, but have more |
| 3825 | * sizes for small commands, and fewer sizes for larger commands. |
| 3826 | */ |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3827 | __u32 trans_offset; |
Stephen M. Cameron | b993313 | 2010-07-19 13:46:07 -0500 | [diff] [blame] | 3828 | int bft[8] = { 5, 6, 8, 10, 12, 20, 28, MAXSGENTRIES + 4}; |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3829 | /* |
| 3830 | * 5 = 1 s/g entry or 4k |
| 3831 | * 6 = 2 s/g entry or 8k |
| 3832 | * 8 = 4 s/g entry or 16k |
| 3833 | * 10 = 6 s/g entry or 24k |
| 3834 | */ |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3835 | unsigned long register_value; |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3836 | BUILD_BUG_ON(28 > MAXSGENTRIES + 4); |
| 3837 | |
Stephen M. Cameron | b993313 | 2010-07-19 13:46:07 -0500 | [diff] [blame] | 3838 | h->reply_pool_wraparound = 1; /* spec: init to 1 */ |
| 3839 | |
| 3840 | /* Controller spec: zero out this buffer. */ |
| 3841 | memset(h->reply_pool, 0, h->max_commands * sizeof(__u64)); |
| 3842 | h->reply_pool_head = h->reply_pool; |
| 3843 | |
| 3844 | trans_offset = readl(&(h->cfgtable->TransMethodOffset)); |
| 3845 | calc_bucket_map(bft, ARRAY_SIZE(bft), h->maxsgentries, |
| 3846 | h->blockFetchTable); |
| 3847 | writel(bft[0], &h->transtable->BlockFetch0); |
| 3848 | writel(bft[1], &h->transtable->BlockFetch1); |
| 3849 | writel(bft[2], &h->transtable->BlockFetch2); |
| 3850 | writel(bft[3], &h->transtable->BlockFetch3); |
| 3851 | writel(bft[4], &h->transtable->BlockFetch4); |
| 3852 | writel(bft[5], &h->transtable->BlockFetch5); |
| 3853 | writel(bft[6], &h->transtable->BlockFetch6); |
| 3854 | writel(bft[7], &h->transtable->BlockFetch7); |
| 3855 | |
| 3856 | /* size of controller ring buffer */ |
| 3857 | writel(h->max_commands, &h->transtable->RepQSize); |
| 3858 | writel(1, &h->transtable->RepQCount); |
| 3859 | writel(0, &h->transtable->RepQCtrAddrLow32); |
| 3860 | writel(0, &h->transtable->RepQCtrAddrHigh32); |
| 3861 | writel(h->reply_pool_dhandle, &h->transtable->RepQAddr0Low32); |
| 3862 | writel(0, &h->transtable->RepQAddr0High32); |
| 3863 | writel(CFGTBL_Trans_Performant, |
| 3864 | &(h->cfgtable->HostWrite.TransportRequest)); |
| 3865 | |
| 3866 | writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); |
| 3867 | cciss_wait_for_mode_change_ack(h); |
| 3868 | register_value = readl(&(h->cfgtable->TransportActive)); |
| 3869 | if (!(register_value & CFGTBL_Trans_Performant)) |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3870 | dev_warn(&h->pdev->dev, "cciss: unable to get board into" |
Stephen M. Cameron | b993313 | 2010-07-19 13:46:07 -0500 | [diff] [blame] | 3871 | " performant mode\n"); |
| 3872 | } |
| 3873 | |
| 3874 | static void __devinit cciss_put_controller_into_performant_mode(ctlr_info_t *h) |
| 3875 | { |
| 3876 | __u32 trans_support; |
| 3877 | |
Stephen M. Cameron | ff5f58f0 | 2010-07-19 13:45:51 -0500 | [diff] [blame] | 3878 | 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] | 3879 | /* Attempt to put controller into performant mode if supported */ |
| 3880 | /* Does board support performant mode? */ |
| 3881 | trans_support = readl(&(h->cfgtable->TransportSupport)); |
| 3882 | if (!(trans_support & PERFORMANT_MODE)) |
| 3883 | return; |
| 3884 | |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3885 | dev_dbg(&h->pdev->dev, "Placing controller into performant mode\n"); |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3886 | /* Performant mode demands commands on a 32 byte boundary |
| 3887 | * pci_alloc_consistent aligns on page boundarys already. |
| 3888 | * Just need to check if divisible by 32 |
| 3889 | */ |
| 3890 | if ((sizeof(CommandList_struct) % 32) != 0) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3891 | dev_warn(&h->pdev->dev, "%s %d %s\n", |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3892 | "cciss info: command size[", |
| 3893 | (int)sizeof(CommandList_struct), |
| 3894 | "] not divisible by 32, no performant mode..\n"); |
| 3895 | return; |
| 3896 | } |
| 3897 | |
| 3898 | /* Performant mode ring buffer and supporting data structures */ |
| 3899 | h->reply_pool = (__u64 *)pci_alloc_consistent( |
| 3900 | h->pdev, h->max_commands * sizeof(__u64), |
| 3901 | &(h->reply_pool_dhandle)); |
| 3902 | |
| 3903 | /* Need a block fetch table for performant mode */ |
| 3904 | h->blockFetchTable = kmalloc(((h->maxsgentries+1) * |
| 3905 | sizeof(__u32)), GFP_KERNEL); |
| 3906 | |
| 3907 | if ((h->reply_pool == NULL) || (h->blockFetchTable == NULL)) |
| 3908 | goto clean_up; |
| 3909 | |
Stephen M. Cameron | b993313 | 2010-07-19 13:46:07 -0500 | [diff] [blame] | 3910 | cciss_enter_performant_mode(h); |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3911 | |
| 3912 | /* Change the access methods to the performant access methods */ |
| 3913 | h->access = SA5_performant_access; |
Stephen M. Cameron | b993313 | 2010-07-19 13:46:07 -0500 | [diff] [blame] | 3914 | h->transMethod = CFGTBL_Trans_Performant; |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3915 | |
| 3916 | return; |
| 3917 | clean_up: |
| 3918 | kfree(h->blockFetchTable); |
| 3919 | if (h->reply_pool) |
| 3920 | pci_free_consistent(h->pdev, |
| 3921 | h->max_commands * sizeof(__u64), |
| 3922 | h->reply_pool, |
| 3923 | h->reply_pool_dhandle); |
| 3924 | return; |
| 3925 | |
| 3926 | } /* cciss_put_controller_into_performant_mode */ |
| 3927 | |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3928 | /* If MSI/MSI-X is supported by the kernel we will try to enable it on |
| 3929 | * controllers that are capable. If not, we use IO-APIC mode. |
| 3930 | */ |
| 3931 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 3932 | static void __devinit cciss_interrupt_mode(ctlr_info_t *h) |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3933 | { |
| 3934 | #ifdef CONFIG_PCI_MSI |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3935 | int err; |
| 3936 | struct msix_entry cciss_msix_entries[4] = { {0, 0}, {0, 1}, |
| 3937 | {0, 2}, {0, 3} |
| 3938 | }; |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3939 | |
| 3940 | /* Some boards advertise MSI but don't really support it */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 3941 | if ((h->board_id == 0x40700E11) || (h->board_id == 0x40800E11) || |
| 3942 | (h->board_id == 0x40820E11) || (h->board_id == 0x40830E11)) |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3943 | goto default_int_mode; |
| 3944 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 3945 | if (pci_find_capability(h->pdev, PCI_CAP_ID_MSIX)) { |
| 3946 | err = pci_enable_msix(h->pdev, cciss_msix_entries, 4); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3947 | if (!err) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 3948 | h->intr[0] = cciss_msix_entries[0].vector; |
| 3949 | h->intr[1] = cciss_msix_entries[1].vector; |
| 3950 | h->intr[2] = cciss_msix_entries[2].vector; |
| 3951 | h->intr[3] = cciss_msix_entries[3].vector; |
| 3952 | h->msix_vector = 1; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3953 | return; |
| 3954 | } |
| 3955 | if (err > 0) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3956 | dev_warn(&h->pdev->dev, |
| 3957 | "only %d MSI-X vectors available\n", err); |
Mike Miller | 1ecb9c0 | 2006-12-06 20:35:13 -0800 | [diff] [blame] | 3958 | goto default_int_mode; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3959 | } else { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3960 | dev_warn(&h->pdev->dev, |
| 3961 | "MSI-X init failed %d\n", err); |
Mike Miller | 1ecb9c0 | 2006-12-06 20:35:13 -0800 | [diff] [blame] | 3962 | goto default_int_mode; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3963 | } |
| 3964 | } |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 3965 | if (pci_find_capability(h->pdev, PCI_CAP_ID_MSI)) { |
| 3966 | if (!pci_enable_msi(h->pdev)) |
| 3967 | h->msi_vector = 1; |
| 3968 | else |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3969 | dev_warn(&h->pdev->dev, "MSI init failed\n"); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3970 | } |
Mike Miller | 1ecb9c0 | 2006-12-06 20:35:13 -0800 | [diff] [blame] | 3971 | default_int_mode: |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3972 | #endif /* CONFIG_PCI_MSI */ |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3973 | /* if we get here we're going to use the default interrupt mode */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 3974 | h->intr[PERF_MODE_INT] = h->pdev->irq; |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3975 | return; |
| 3976 | } |
| 3977 | |
Stephen M. Cameron | 6539fa9 | 2010-07-19 13:44:55 -0500 | [diff] [blame] | 3978 | static int __devinit cciss_lookup_board_id(struct pci_dev *pdev, u32 *board_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3979 | { |
Stephen M. Cameron | 6539fa9 | 2010-07-19 13:44:55 -0500 | [diff] [blame] | 3980 | int i; |
| 3981 | u32 subsystem_vendor_id, subsystem_device_id; |
Stephen M. Cameron | 2ec24ff | 2009-10-13 09:18:22 +0200 | [diff] [blame] | 3982 | |
| 3983 | subsystem_vendor_id = pdev->subsystem_vendor; |
| 3984 | subsystem_device_id = pdev->subsystem_device; |
Stephen M. Cameron | 6539fa9 | 2010-07-19 13:44:55 -0500 | [diff] [blame] | 3985 | *board_id = ((subsystem_device_id << 16) & 0xffff0000) | |
| 3986 | subsystem_vendor_id; |
Stephen M. Cameron | 2ec24ff | 2009-10-13 09:18:22 +0200 | [diff] [blame] | 3987 | |
| 3988 | for (i = 0; i < ARRAY_SIZE(products); i++) { |
| 3989 | /* Stand aside for hpsa driver on request */ |
| 3990 | if (cciss_allow_hpsa && products[i].board_id == HPSA_BOUNDARY) |
| 3991 | return -ENODEV; |
Stephen M. Cameron | 6539fa9 | 2010-07-19 13:44:55 -0500 | [diff] [blame] | 3992 | if (*board_id == products[i].board_id) |
| 3993 | return i; |
Stephen M. Cameron | 2ec24ff | 2009-10-13 09:18:22 +0200 | [diff] [blame] | 3994 | } |
Stephen M. Cameron | 6539fa9 | 2010-07-19 13:44:55 -0500 | [diff] [blame] | 3995 | dev_warn(&pdev->dev, "unrecognized board ID: 0x%08x, ignoring.\n", |
| 3996 | *board_id); |
| 3997 | return -ENODEV; |
| 3998 | } |
| 3999 | |
Stephen M. Cameron | dd9c426 | 2010-07-19 13:45:00 -0500 | [diff] [blame] | 4000 | static inline bool cciss_board_disabled(ctlr_info_t *h) |
| 4001 | { |
| 4002 | u16 command; |
| 4003 | |
| 4004 | (void) pci_read_config_word(h->pdev, PCI_COMMAND, &command); |
| 4005 | return ((command & PCI_COMMAND_MEMORY) == 0); |
| 4006 | } |
| 4007 | |
Stephen M. Cameron | d474830 | 2010-07-19 13:45:10 -0500 | [diff] [blame] | 4008 | static int __devinit cciss_pci_find_memory_BAR(struct pci_dev *pdev, |
| 4009 | unsigned long *memory_bar) |
| 4010 | { |
| 4011 | int i; |
| 4012 | |
| 4013 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) |
| 4014 | if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) { |
| 4015 | /* addressing mode bits already removed */ |
| 4016 | *memory_bar = pci_resource_start(pdev, i); |
| 4017 | dev_dbg(&pdev->dev, "memory BAR = %lx\n", |
| 4018 | *memory_bar); |
| 4019 | return 0; |
| 4020 | } |
| 4021 | dev_warn(&pdev->dev, "no memory BAR found\n"); |
| 4022 | return -ENODEV; |
| 4023 | } |
| 4024 | |
Stephen M. Cameron | e99ba13 | 2010-07-19 13:45:15 -0500 | [diff] [blame] | 4025 | static int __devinit cciss_wait_for_board_ready(ctlr_info_t *h) |
| 4026 | { |
| 4027 | int i; |
| 4028 | u32 scratchpad; |
| 4029 | |
| 4030 | for (i = 0; i < CCISS_BOARD_READY_ITERATIONS; i++) { |
| 4031 | scratchpad = readl(h->vaddr + SA5_SCRATCHPAD_OFFSET); |
| 4032 | if (scratchpad == CCISS_FIRMWARE_READY) |
| 4033 | return 0; |
| 4034 | msleep(CCISS_BOARD_READY_POLL_INTERVAL_MSECS); |
| 4035 | } |
| 4036 | dev_warn(&h->pdev->dev, "board not ready, timed out.\n"); |
| 4037 | return -ENODEV; |
| 4038 | } |
| 4039 | |
Stephen M. Cameron | 8e93bf6 | 2010-07-19 13:46:12 -0500 | [diff] [blame] | 4040 | static int __devinit cciss_find_cfg_addrs(struct pci_dev *pdev, |
| 4041 | void __iomem *vaddr, u32 *cfg_base_addr, u64 *cfg_base_addr_index, |
| 4042 | u64 *cfg_offset) |
| 4043 | { |
| 4044 | *cfg_base_addr = readl(vaddr + SA5_CTCFG_OFFSET); |
| 4045 | *cfg_offset = readl(vaddr + SA5_CTMEM_OFFSET); |
| 4046 | *cfg_base_addr &= (u32) 0x0000ffff; |
| 4047 | *cfg_base_addr_index = find_PCI_BAR_index(pdev, *cfg_base_addr); |
| 4048 | if (*cfg_base_addr_index == -1) { |
| 4049 | dev_warn(&pdev->dev, "cannot find cfg_base_addr_index, " |
| 4050 | "*cfg_base_addr = 0x%08x\n", *cfg_base_addr); |
Stephen M. Cameron | 2ec24ff | 2009-10-13 09:18:22 +0200 | [diff] [blame] | 4051 | return -ENODEV; |
| 4052 | } |
Stephen M. Cameron | 8e93bf6 | 2010-07-19 13:46:12 -0500 | [diff] [blame] | 4053 | return 0; |
| 4054 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4055 | |
Stephen M. Cameron | 4809d09 | 2010-07-19 13:45:21 -0500 | [diff] [blame] | 4056 | static int __devinit cciss_find_cfgtables(ctlr_info_t *h) |
| 4057 | { |
| 4058 | u64 cfg_offset; |
| 4059 | u32 cfg_base_addr; |
| 4060 | u64 cfg_base_addr_index; |
| 4061 | u32 trans_offset; |
Stephen M. Cameron | 8e93bf6 | 2010-07-19 13:46:12 -0500 | [diff] [blame] | 4062 | int rc; |
Stephen M. Cameron | 4809d09 | 2010-07-19 13:45:21 -0500 | [diff] [blame] | 4063 | |
Stephen M. Cameron | 8e93bf6 | 2010-07-19 13:46:12 -0500 | [diff] [blame] | 4064 | rc = cciss_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr, |
| 4065 | &cfg_base_addr_index, &cfg_offset); |
| 4066 | if (rc) |
| 4067 | return rc; |
Stephen M. Cameron | 4809d09 | 2010-07-19 13:45:21 -0500 | [diff] [blame] | 4068 | h->cfgtable = remap_pci_mem(pci_resource_start(h->pdev, |
Stephen M. Cameron | 8e93bf6 | 2010-07-19 13:46:12 -0500 | [diff] [blame] | 4069 | cfg_base_addr_index) + cfg_offset, sizeof(h->cfgtable)); |
Stephen M. Cameron | 4809d09 | 2010-07-19 13:45:21 -0500 | [diff] [blame] | 4070 | if (!h->cfgtable) |
| 4071 | return -ENOMEM; |
| 4072 | /* Find performant mode table. */ |
Stephen M. Cameron | 8e93bf6 | 2010-07-19 13:46:12 -0500 | [diff] [blame] | 4073 | trans_offset = readl(&h->cfgtable->TransMethodOffset); |
Stephen M. Cameron | 4809d09 | 2010-07-19 13:45:21 -0500 | [diff] [blame] | 4074 | h->transtable = remap_pci_mem(pci_resource_start(h->pdev, |
| 4075 | cfg_base_addr_index)+cfg_offset+trans_offset, |
| 4076 | sizeof(*h->transtable)); |
| 4077 | if (!h->transtable) |
| 4078 | return -ENOMEM; |
| 4079 | return 0; |
| 4080 | } |
| 4081 | |
Stephen M. Cameron | adfbc1f | 2010-07-19 13:46:28 -0500 | [diff] [blame] | 4082 | static void __devinit cciss_get_max_perf_mode_cmds(struct ctlr_info *h) |
| 4083 | { |
| 4084 | h->max_commands = readl(&(h->cfgtable->MaxPerformantModeCommands)); |
| 4085 | if (h->max_commands < 16) { |
| 4086 | dev_warn(&h->pdev->dev, "Controller reports " |
| 4087 | "max supported commands of %d, an obvious lie. " |
| 4088 | "Using 16. Ensure that firmware is up to date.\n", |
| 4089 | h->max_commands); |
| 4090 | h->max_commands = 16; |
| 4091 | } |
| 4092 | } |
| 4093 | |
Stephen M. Cameron | afadbf4 | 2010-07-19 13:45:31 -0500 | [diff] [blame] | 4094 | /* Interrogate the hardware for some limits: |
| 4095 | * max commands, max SG elements without chaining, and with chaining, |
| 4096 | * SG chain block size, etc. |
| 4097 | */ |
| 4098 | static void __devinit cciss_find_board_params(ctlr_info_t *h) |
| 4099 | { |
Stephen M. Cameron | adfbc1f | 2010-07-19 13:46:28 -0500 | [diff] [blame] | 4100 | cciss_get_max_perf_mode_cmds(h); |
Stephen M. Cameron | afadbf4 | 2010-07-19 13:45:31 -0500 | [diff] [blame] | 4101 | h->nr_cmds = h->max_commands - 4; /* Allow room for some ioctls */ |
| 4102 | h->maxsgentries = readl(&(h->cfgtable->MaxSGElements)); |
| 4103 | /* |
| 4104 | * Limit in-command s/g elements to 32 save dma'able memory. |
| 4105 | * Howvever spec says if 0, use 31 |
| 4106 | */ |
| 4107 | h->max_cmd_sgentries = 31; |
| 4108 | if (h->maxsgentries > 512) { |
| 4109 | h->max_cmd_sgentries = 32; |
| 4110 | h->chainsize = h->maxsgentries - h->max_cmd_sgentries + 1; |
| 4111 | h->maxsgentries--; /* save one for chain pointer */ |
| 4112 | } else { |
| 4113 | h->maxsgentries = 31; /* default to traditional values */ |
| 4114 | h->chainsize = 0; |
| 4115 | } |
| 4116 | } |
| 4117 | |
Stephen M. Cameron | 501b92c | 2010-07-19 13:45:36 -0500 | [diff] [blame] | 4118 | static inline bool CISS_signature_present(ctlr_info_t *h) |
| 4119 | { |
| 4120 | if ((readb(&h->cfgtable->Signature[0]) != 'C') || |
| 4121 | (readb(&h->cfgtable->Signature[1]) != 'I') || |
| 4122 | (readb(&h->cfgtable->Signature[2]) != 'S') || |
| 4123 | (readb(&h->cfgtable->Signature[3]) != 'S')) { |
| 4124 | dev_warn(&h->pdev->dev, "not a valid CISS config table\n"); |
| 4125 | return false; |
| 4126 | } |
| 4127 | return true; |
| 4128 | } |
| 4129 | |
Stephen M. Cameron | 322e304 | 2010-07-19 13:45:41 -0500 | [diff] [blame] | 4130 | /* Need to enable prefetch in the SCSI core for 6400 in x86 */ |
| 4131 | static inline void cciss_enable_scsi_prefetch(ctlr_info_t *h) |
| 4132 | { |
| 4133 | #ifdef CONFIG_X86 |
| 4134 | u32 prefetch; |
| 4135 | |
| 4136 | prefetch = readl(&(h->cfgtable->SCSI_Prefetch)); |
| 4137 | prefetch |= 0x100; |
| 4138 | writel(prefetch, &(h->cfgtable->SCSI_Prefetch)); |
| 4139 | #endif |
| 4140 | } |
| 4141 | |
Stephen M. Cameron | bfd63ee | 2010-07-19 13:45:46 -0500 | [diff] [blame] | 4142 | /* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result |
| 4143 | * in a prefetch beyond physical memory. |
| 4144 | */ |
| 4145 | static inline void cciss_p600_dma_prefetch_quirk(ctlr_info_t *h) |
| 4146 | { |
| 4147 | u32 dma_prefetch; |
| 4148 | __u32 dma_refetch; |
| 4149 | |
| 4150 | if (h->board_id != 0x3225103C) |
| 4151 | return; |
| 4152 | dma_prefetch = readl(h->vaddr + I2O_DMA1_CFG); |
| 4153 | dma_prefetch |= 0x8000; |
| 4154 | writel(dma_prefetch, h->vaddr + I2O_DMA1_CFG); |
| 4155 | pci_read_config_dword(h->pdev, PCI_COMMAND_PARITY, &dma_refetch); |
| 4156 | dma_refetch |= 0x1; |
| 4157 | pci_write_config_dword(h->pdev, PCI_COMMAND_PARITY, dma_refetch); |
| 4158 | } |
| 4159 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4160 | static int __devinit cciss_pci_init(ctlr_info_t *h) |
Stephen M. Cameron | 6539fa9 | 2010-07-19 13:44:55 -0500 | [diff] [blame] | 4161 | { |
Stephen M. Cameron | 4809d09 | 2010-07-19 13:45:21 -0500 | [diff] [blame] | 4162 | int prod_index, err; |
Stephen M. Cameron | 6539fa9 | 2010-07-19 13:44:55 -0500 | [diff] [blame] | 4163 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4164 | prod_index = cciss_lookup_board_id(h->pdev, &h->board_id); |
Stephen M. Cameron | 6539fa9 | 2010-07-19 13:44:55 -0500 | [diff] [blame] | 4165 | if (prod_index < 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4166 | return -ENODEV; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4167 | h->product_name = products[prod_index].product_name; |
| 4168 | h->access = *(products[prod_index].access); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4169 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4170 | if (cciss_board_disabled(h)) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4171 | dev_warn(&h->pdev->dev, "controller appears to be disabled\n"); |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 4172 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4173 | } |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4174 | err = pci_enable_device(h->pdev); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4175 | if (err) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4176 | dev_warn(&h->pdev->dev, "Unable to Enable PCI device\n"); |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 4177 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4178 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4179 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4180 | err = pci_request_regions(h->pdev, "cciss"); |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 4181 | if (err) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4182 | dev_warn(&h->pdev->dev, |
| 4183 | "Cannot obtain PCI resources, aborting\n"); |
Mike Miller | 872225c | 2006-12-13 00:34:22 -0800 | [diff] [blame] | 4184 | return err; |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 4185 | } |
| 4186 | |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4187 | dev_dbg(&h->pdev->dev, "irq = %x\n", h->pdev->irq); |
| 4188 | dev_dbg(&h->pdev->dev, "board_id = %x\n", h->board_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4189 | |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 4190 | /* If the kernel supports MSI/MSI-X we will try to enable that functionality, |
| 4191 | * else we use the IO-APIC interrupt assigned to us by system ROM. |
| 4192 | */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4193 | cciss_interrupt_mode(h); |
| 4194 | err = cciss_pci_find_memory_BAR(h->pdev, &h->paddr); |
Stephen M. Cameron | d474830 | 2010-07-19 13:45:10 -0500 | [diff] [blame] | 4195 | if (err) |
Mike Miller | e143858 | 2009-04-02 12:50:56 -0700 | [diff] [blame] | 4196 | goto err_out_free_res; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4197 | h->vaddr = remap_pci_mem(h->paddr, 0x250); |
| 4198 | if (!h->vaddr) { |
Stephen M. Cameron | da55032 | 2010-07-19 13:45:26 -0500 | [diff] [blame] | 4199 | err = -ENOMEM; |
| 4200 | goto err_out_free_res; |
Mike Miller | e143858 | 2009-04-02 12:50:56 -0700 | [diff] [blame] | 4201 | } |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4202 | err = cciss_wait_for_board_ready(h); |
Stephen M. Cameron | e99ba13 | 2010-07-19 13:45:15 -0500 | [diff] [blame] | 4203 | if (err) |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 4204 | goto err_out_free_res; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4205 | err = cciss_find_cfgtables(h); |
Stephen M. Cameron | 4809d09 | 2010-07-19 13:45:21 -0500 | [diff] [blame] | 4206 | if (err) |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 4207 | goto err_out_free_res; |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4208 | print_cfg_table(h); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4209 | cciss_find_board_params(h); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4210 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4211 | if (!CISS_signature_present(h)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4212 | err = -ENODEV; |
| 4213 | goto err_out_free_res; |
| 4214 | } |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4215 | cciss_enable_scsi_prefetch(h); |
| 4216 | cciss_p600_dma_prefetch_quirk(h); |
| 4217 | cciss_put_controller_into_performant_mode(h); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4218 | return 0; |
| 4219 | |
Linus Torvalds | 5faad62 | 2006-12-13 09:15:34 -0800 | [diff] [blame] | 4220 | err_out_free_res: |
Mike Miller | 872225c | 2006-12-13 00:34:22 -0800 | [diff] [blame] | 4221 | /* |
| 4222 | * Deliberately omit pci_disable_device(): it does something nasty to |
| 4223 | * Smart Array controllers that pci_enable_device does not undo |
| 4224 | */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4225 | if (h->transtable) |
| 4226 | iounmap(h->transtable); |
| 4227 | if (h->cfgtable) |
| 4228 | iounmap(h->cfgtable); |
| 4229 | if (h->vaddr) |
| 4230 | iounmap(h->vaddr); |
| 4231 | pci_release_regions(h->pdev); |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 4232 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4233 | } |
| 4234 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 4235 | /* Function to find the first free pointer into our hba[] array |
| 4236 | * Returns -1 if no free entries are left. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4237 | */ |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4238 | static int alloc_cciss_hba(struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4239 | { |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 4240 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4241 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4242 | for (i = 0; i < MAX_CTLR; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4243 | if (!hba[i]) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4244 | ctlr_info_t *h; |
Jesper Juhl | f2912a1 | 2007-07-31 00:39:39 -0700 | [diff] [blame] | 4245 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4246 | h = kzalloc(sizeof(ctlr_info_t), GFP_KERNEL); |
| 4247 | if (!h) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4248 | goto Enomem; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4249 | hba[i] = h; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4250 | return i; |
| 4251 | } |
| 4252 | } |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4253 | dev_warn(&pdev->dev, "This driver supports a maximum" |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4254 | " of %d controllers.\n", MAX_CTLR); |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 4255 | return -1; |
| 4256 | Enomem: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4257 | dev_warn(&pdev->dev, "out of memory.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4258 | return -1; |
| 4259 | } |
| 4260 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4261 | static void free_hba(ctlr_info_t *h) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4262 | { |
Stephen M. Cameron | 2c93559 | 2009-09-17 13:47:50 -0500 | [diff] [blame] | 4263 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4264 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4265 | hba[h->ctlr] = NULL; |
Stephen M. Cameron | 2c93559 | 2009-09-17 13:47:50 -0500 | [diff] [blame] | 4266 | for (i = 0; i < h->highest_lun + 1; i++) |
| 4267 | if (h->gendisk[i] != NULL) |
| 4268 | put_disk(h->gendisk[i]); |
| 4269 | kfree(h); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4270 | } |
| 4271 | |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4272 | /* Send a message CDB to the firmware. */ |
| 4273 | static __devinit int cciss_message(struct pci_dev *pdev, unsigned char opcode, unsigned char type) |
| 4274 | { |
| 4275 | typedef struct { |
| 4276 | CommandListHeader_struct CommandHeader; |
| 4277 | RequestBlock_struct Request; |
| 4278 | ErrDescriptor_struct ErrorDescriptor; |
| 4279 | } Command; |
| 4280 | static const size_t cmd_sz = sizeof(Command) + sizeof(ErrorInfo_struct); |
| 4281 | Command *cmd; |
| 4282 | dma_addr_t paddr64; |
| 4283 | uint32_t paddr32, tag; |
| 4284 | void __iomem *vaddr; |
| 4285 | int i, err; |
| 4286 | |
| 4287 | vaddr = ioremap_nocache(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); |
| 4288 | if (vaddr == NULL) |
| 4289 | return -ENOMEM; |
| 4290 | |
| 4291 | /* The Inbound Post Queue only accepts 32-bit physical addresses for the |
| 4292 | CCISS commands, so they must be allocated from the lower 4GiB of |
| 4293 | memory. */ |
Yang Hongyang | e930438 | 2009-04-13 14:40:14 -0700 | [diff] [blame] | 4294 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4295 | if (err) { |
| 4296 | iounmap(vaddr); |
| 4297 | return -ENOMEM; |
| 4298 | } |
| 4299 | |
| 4300 | cmd = pci_alloc_consistent(pdev, cmd_sz, &paddr64); |
| 4301 | if (cmd == NULL) { |
| 4302 | iounmap(vaddr); |
| 4303 | return -ENOMEM; |
| 4304 | } |
| 4305 | |
| 4306 | /* This must fit, because of the 32-bit consistent DMA mask. Also, |
| 4307 | although there's no guarantee, we assume that the address is at |
| 4308 | least 4-byte aligned (most likely, it's page-aligned). */ |
| 4309 | paddr32 = paddr64; |
| 4310 | |
| 4311 | cmd->CommandHeader.ReplyQueue = 0; |
| 4312 | cmd->CommandHeader.SGList = 0; |
| 4313 | cmd->CommandHeader.SGTotal = 0; |
| 4314 | cmd->CommandHeader.Tag.lower = paddr32; |
| 4315 | cmd->CommandHeader.Tag.upper = 0; |
| 4316 | memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8); |
| 4317 | |
| 4318 | cmd->Request.CDBLen = 16; |
| 4319 | cmd->Request.Type.Type = TYPE_MSG; |
| 4320 | cmd->Request.Type.Attribute = ATTR_HEADOFQUEUE; |
| 4321 | cmd->Request.Type.Direction = XFER_NONE; |
| 4322 | cmd->Request.Timeout = 0; /* Don't time out */ |
| 4323 | cmd->Request.CDB[0] = opcode; |
| 4324 | cmd->Request.CDB[1] = type; |
| 4325 | memset(&cmd->Request.CDB[2], 0, 14); /* the rest of the CDB is reserved */ |
| 4326 | |
| 4327 | cmd->ErrorDescriptor.Addr.lower = paddr32 + sizeof(Command); |
| 4328 | cmd->ErrorDescriptor.Addr.upper = 0; |
| 4329 | cmd->ErrorDescriptor.Len = sizeof(ErrorInfo_struct); |
| 4330 | |
| 4331 | writel(paddr32, vaddr + SA5_REQUEST_PORT_OFFSET); |
| 4332 | |
| 4333 | for (i = 0; i < 10; i++) { |
| 4334 | tag = readl(vaddr + SA5_REPLY_PORT_OFFSET); |
| 4335 | if ((tag & ~3) == paddr32) |
| 4336 | break; |
| 4337 | schedule_timeout_uninterruptible(HZ); |
| 4338 | } |
| 4339 | |
| 4340 | iounmap(vaddr); |
| 4341 | |
| 4342 | /* we leak the DMA buffer here ... no choice since the controller could |
| 4343 | still complete the command. */ |
| 4344 | if (i == 10) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4345 | dev_err(&pdev->dev, |
| 4346 | "controller message %02x:%02x timed out\n", |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4347 | opcode, type); |
| 4348 | return -ETIMEDOUT; |
| 4349 | } |
| 4350 | |
| 4351 | pci_free_consistent(pdev, cmd_sz, cmd, paddr64); |
| 4352 | |
| 4353 | if (tag & 2) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4354 | dev_err(&pdev->dev, "controller message %02x:%02x failed\n", |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4355 | opcode, type); |
| 4356 | return -EIO; |
| 4357 | } |
| 4358 | |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4359 | dev_info(&pdev->dev, "controller message %02x:%02x succeeded\n", |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4360 | opcode, type); |
| 4361 | return 0; |
| 4362 | } |
| 4363 | |
| 4364 | #define cciss_soft_reset_controller(p) cciss_message(p, 1, 0) |
| 4365 | #define cciss_noop(p) cciss_message(p, 3, 0) |
| 4366 | |
| 4367 | static __devinit int cciss_reset_msi(struct pci_dev *pdev) |
| 4368 | { |
| 4369 | /* the #defines are stolen from drivers/pci/msi.h. */ |
| 4370 | #define msi_control_reg(base) (base + PCI_MSI_FLAGS) |
| 4371 | #define PCI_MSIX_FLAGS_ENABLE (1 << 15) |
| 4372 | |
| 4373 | int pos; |
| 4374 | u16 control = 0; |
| 4375 | |
| 4376 | pos = pci_find_capability(pdev, PCI_CAP_ID_MSI); |
| 4377 | if (pos) { |
| 4378 | pci_read_config_word(pdev, msi_control_reg(pos), &control); |
| 4379 | if (control & PCI_MSI_FLAGS_ENABLE) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4380 | dev_info(&pdev->dev, "resetting MSI\n"); |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4381 | pci_write_config_word(pdev, msi_control_reg(pos), control & ~PCI_MSI_FLAGS_ENABLE); |
| 4382 | } |
| 4383 | } |
| 4384 | |
| 4385 | pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX); |
| 4386 | if (pos) { |
| 4387 | pci_read_config_word(pdev, msi_control_reg(pos), &control); |
| 4388 | if (control & PCI_MSIX_FLAGS_ENABLE) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4389 | dev_info(&pdev->dev, "resetting MSI-X\n"); |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4390 | pci_write_config_word(pdev, msi_control_reg(pos), control & ~PCI_MSIX_FLAGS_ENABLE); |
| 4391 | } |
| 4392 | } |
| 4393 | |
| 4394 | return 0; |
| 4395 | } |
| 4396 | |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4397 | static int cciss_controller_hard_reset(struct pci_dev *pdev, |
| 4398 | void * __iomem vaddr, bool use_doorbell) |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4399 | { |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4400 | u16 pmcsr; |
| 4401 | int pos; |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4402 | |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4403 | if (use_doorbell) { |
| 4404 | /* For everything after the P600, the PCI power state method |
| 4405 | * of resetting the controller doesn't work, so we have this |
| 4406 | * other way using the doorbell register. |
| 4407 | */ |
| 4408 | dev_info(&pdev->dev, "using doorbell to reset controller\n"); |
| 4409 | writel(DOORBELL_CTLR_RESET, vaddr + SA5_DOORBELL); |
| 4410 | msleep(1000); |
| 4411 | } else { /* Try to do it the PCI power state way */ |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4412 | |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4413 | /* Quoting from the Open CISS Specification: "The Power |
| 4414 | * Management Control/Status Register (CSR) controls the power |
| 4415 | * state of the device. The normal operating state is D0, |
| 4416 | * CSR=00h. The software off state is D3, CSR=03h. To reset |
| 4417 | * the controller, place the interface device in D3 then to D0, |
| 4418 | * this causes a secondary PCI reset which will reset the |
| 4419 | * controller." */ |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4420 | |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4421 | pos = pci_find_capability(pdev, PCI_CAP_ID_PM); |
| 4422 | if (pos == 0) { |
| 4423 | dev_err(&pdev->dev, |
| 4424 | "cciss_controller_hard_reset: " |
| 4425 | "PCI PM not supported\n"); |
| 4426 | return -ENODEV; |
| 4427 | } |
| 4428 | dev_info(&pdev->dev, "using PCI PM to reset controller\n"); |
| 4429 | /* enter the D3hot power management state */ |
| 4430 | pci_read_config_word(pdev, pos + PCI_PM_CTRL, &pmcsr); |
| 4431 | pmcsr &= ~PCI_PM_CTRL_STATE_MASK; |
| 4432 | pmcsr |= PCI_D3hot; |
| 4433 | pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4434 | |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4435 | msleep(500); |
| 4436 | |
| 4437 | /* enter the D0 power management state */ |
| 4438 | pmcsr &= ~PCI_PM_CTRL_STATE_MASK; |
| 4439 | pmcsr |= PCI_D0; |
| 4440 | pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); |
| 4441 | |
| 4442 | msleep(500); |
| 4443 | } |
| 4444 | return 0; |
| 4445 | } |
| 4446 | |
| 4447 | /* This does a hard reset of the controller using PCI power management |
| 4448 | * states or using the doorbell register. */ |
| 4449 | static __devinit int cciss_kdump_hard_reset_controller(struct pci_dev *pdev) |
| 4450 | { |
| 4451 | u16 saved_config_space[32]; |
| 4452 | u64 cfg_offset; |
| 4453 | u32 cfg_base_addr; |
| 4454 | u64 cfg_base_addr_index; |
| 4455 | void __iomem *vaddr; |
| 4456 | unsigned long paddr; |
| 4457 | u32 misc_fw_support, active_transport; |
| 4458 | int rc, i; |
| 4459 | CfgTable_struct __iomem *cfgtable; |
| 4460 | bool use_doorbell; |
Stephen M. Cameron | 058a0f9 | 2010-07-19 13:46:33 -0500 | [diff] [blame] | 4461 | u32 board_id; |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4462 | |
| 4463 | /* For controllers as old a the p600, this is very nearly |
| 4464 | * the same thing as |
| 4465 | * |
| 4466 | * pci_save_state(pci_dev); |
| 4467 | * pci_set_power_state(pci_dev, PCI_D3hot); |
| 4468 | * pci_set_power_state(pci_dev, PCI_D0); |
| 4469 | * pci_restore_state(pci_dev); |
| 4470 | * |
| 4471 | * but we can't use these nice canned kernel routines on |
| 4472 | * kexec, because they also check the MSI/MSI-X state in PCI |
| 4473 | * configuration space and do the wrong thing when it is |
| 4474 | * set/cleared. Also, the pci_save/restore_state functions |
| 4475 | * violate the ordering requirements for restoring the |
| 4476 | * configuration space from the CCISS document (see the |
| 4477 | * comment below). So we roll our own .... |
| 4478 | * |
| 4479 | * For controllers newer than the P600, the pci power state |
| 4480 | * method of resetting doesn't work so we have another way |
| 4481 | * using the doorbell register. |
| 4482 | */ |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4483 | |
Stephen M. Cameron | 058a0f9 | 2010-07-19 13:46:33 -0500 | [diff] [blame] | 4484 | /* Exclude 640x boards. These are two pci devices in one slot |
| 4485 | * which share a battery backed cache module. One controls the |
| 4486 | * cache, the other accesses the cache through the one that controls |
| 4487 | * it. If we reset the one controlling the cache, the other will |
| 4488 | * likely not be happy. Just forbid resetting this conjoined mess. |
| 4489 | */ |
| 4490 | cciss_lookup_board_id(pdev, &board_id); |
| 4491 | if (board_id == 0x409C0E11 || board_id == 0x409D0E11) { |
| 4492 | dev_warn(&pdev->dev, "Cannot reset Smart Array 640x " |
| 4493 | "due to shared cache module."); |
| 4494 | return -ENODEV; |
| 4495 | } |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4496 | |
| 4497 | for (i = 0; i < 32; i++) |
| 4498 | pci_read_config_word(pdev, 2*i, &saved_config_space[i]); |
| 4499 | |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4500 | /* find the first memory BAR, so we can find the cfg table */ |
| 4501 | rc = cciss_pci_find_memory_BAR(pdev, &paddr); |
| 4502 | if (rc) |
| 4503 | return rc; |
| 4504 | vaddr = remap_pci_mem(paddr, 0x250); |
| 4505 | if (!vaddr) |
| 4506 | return -ENOMEM; |
| 4507 | |
| 4508 | /* find cfgtable in order to check if reset via doorbell is supported */ |
| 4509 | rc = cciss_find_cfg_addrs(pdev, vaddr, &cfg_base_addr, |
| 4510 | &cfg_base_addr_index, &cfg_offset); |
| 4511 | if (rc) |
| 4512 | goto unmap_vaddr; |
| 4513 | cfgtable = remap_pci_mem(pci_resource_start(pdev, |
| 4514 | cfg_base_addr_index) + cfg_offset, sizeof(*cfgtable)); |
| 4515 | if (!cfgtable) { |
| 4516 | rc = -ENOMEM; |
| 4517 | goto unmap_vaddr; |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4518 | } |
| 4519 | |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4520 | /* If reset via doorbell register is supported, use that. */ |
| 4521 | misc_fw_support = readl(&cfgtable->misc_fw_support); |
| 4522 | use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET; |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4523 | |
Stephen M. Cameron | 75230ff | 2010-08-23 11:02:17 +0200 | [diff] [blame] | 4524 | /* The doorbell reset seems to cause lockups on some Smart |
| 4525 | * Arrays (e.g. P410, P410i, maybe others). Until this is |
| 4526 | * fixed or at least isolated, avoid the doorbell reset. |
| 4527 | */ |
| 4528 | use_doorbell = 0; |
| 4529 | |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4530 | rc = cciss_controller_hard_reset(pdev, vaddr, use_doorbell); |
| 4531 | if (rc) |
| 4532 | goto unmap_cfgtable; |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4533 | |
| 4534 | /* Restore the PCI configuration space. The Open CISS |
| 4535 | * Specification says, "Restore the PCI Configuration |
| 4536 | * Registers, offsets 00h through 60h. It is important to |
| 4537 | * restore the command register, 16-bits at offset 04h, |
| 4538 | * last. Do not restore the configuration status register, |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4539 | * 16-bits at offset 06h." Note that the offset is 2*i. |
| 4540 | */ |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4541 | for (i = 0; i < 32; i++) { |
| 4542 | if (i == 2 || i == 3) |
| 4543 | continue; |
| 4544 | pci_write_config_word(pdev, 2*i, saved_config_space[i]); |
| 4545 | } |
| 4546 | wmb(); |
| 4547 | pci_write_config_word(pdev, 4, saved_config_space[2]); |
| 4548 | |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4549 | /* Some devices (notably the HP Smart Array 5i Controller) |
| 4550 | need a little pause here */ |
| 4551 | msleep(CCISS_POST_RESET_PAUSE_MSECS); |
| 4552 | |
| 4553 | /* Controller should be in simple mode at this point. If it's not, |
| 4554 | * It means we're on one of those controllers which doesn't support |
| 4555 | * the doorbell reset method and on which the PCI power management reset |
| 4556 | * method doesn't work (P800, for example.) |
| 4557 | * In those cases, don't try to proceed, as it generally doesn't work. |
| 4558 | */ |
| 4559 | active_transport = readl(&cfgtable->TransportActive); |
| 4560 | if (active_transport & PERFORMANT_MODE) { |
| 4561 | dev_warn(&pdev->dev, "Unable to successfully reset controller," |
| 4562 | " Ignoring controller.\n"); |
| 4563 | rc = -ENODEV; |
| 4564 | } |
| 4565 | |
| 4566 | unmap_cfgtable: |
| 4567 | iounmap(cfgtable); |
| 4568 | |
| 4569 | unmap_vaddr: |
| 4570 | iounmap(vaddr); |
| 4571 | return rc; |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4572 | } |
| 4573 | |
Stephen M. Cameron | 83123cb | 2010-07-19 13:46:17 -0500 | [diff] [blame] | 4574 | static __devinit int cciss_init_reset_devices(struct pci_dev *pdev) |
| 4575 | { |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4576 | int rc, i; |
Stephen M. Cameron | 83123cb | 2010-07-19 13:46:17 -0500 | [diff] [blame] | 4577 | |
| 4578 | if (!reset_devices) |
| 4579 | return 0; |
| 4580 | |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4581 | /* Reset the controller with a PCI power-cycle or via doorbell */ |
| 4582 | rc = cciss_kdump_hard_reset_controller(pdev); |
Stephen M. Cameron | 83123cb | 2010-07-19 13:46:17 -0500 | [diff] [blame] | 4583 | |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4584 | /* -ENOTSUPP here means we cannot reset the controller |
| 4585 | * but it's already (and still) up and running in |
Stephen M. Cameron | 058a0f9 | 2010-07-19 13:46:33 -0500 | [diff] [blame] | 4586 | * "performant mode". Or, it might be 640x, which can't reset |
| 4587 | * due to concerns about shared bbwc between 6402/6404 pair. |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4588 | */ |
| 4589 | if (rc == -ENOTSUPP) |
| 4590 | return 0; /* just try to do the kdump anyhow. */ |
| 4591 | if (rc) |
| 4592 | return -ENODEV; |
| 4593 | if (cciss_reset_msi(pdev)) |
| 4594 | return -ENODEV; |
Stephen M. Cameron | 83123cb | 2010-07-19 13:46:17 -0500 | [diff] [blame] | 4595 | |
| 4596 | /* Now try to get the controller to respond to a no-op */ |
| 4597 | for (i = 0; i < CCISS_POST_RESET_NOOP_RETRIES; i++) { |
| 4598 | if (cciss_noop(pdev) == 0) |
| 4599 | break; |
| 4600 | else |
| 4601 | dev_warn(&pdev->dev, "no-op failed%s\n", |
| 4602 | (i < CCISS_POST_RESET_NOOP_RETRIES - 1 ? |
| 4603 | "; re-trying" : "")); |
| 4604 | msleep(CCISS_POST_RESET_NOOP_INTERVAL_MSECS); |
| 4605 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4606 | return 0; |
| 4607 | } |
| 4608 | |
| 4609 | /* |
| 4610 | * This is it. Find all the controllers and register them. I really hate |
| 4611 | * stealing all these major device numbers. |
| 4612 | * returns the number of block devices registered. |
| 4613 | */ |
| 4614 | static int __devinit cciss_init_one(struct pci_dev *pdev, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4615 | const struct pci_device_id *ent) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4616 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4617 | int i; |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 4618 | int j = 0; |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 4619 | int k = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4620 | int rc; |
Mike Miller | 22bece0 | 2008-11-06 12:53:25 -0800 | [diff] [blame] | 4621 | int dac, return_code; |
Eric Dumazet | 212a502 | 2009-08-24 10:01:53 +0200 | [diff] [blame] | 4622 | InquiryData_struct *inq_buff; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4623 | ctlr_info_t *h; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4624 | |
Stephen M. Cameron | 83123cb | 2010-07-19 13:46:17 -0500 | [diff] [blame] | 4625 | rc = cciss_init_reset_devices(pdev); |
| 4626 | if (rc) |
| 4627 | return rc; |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4628 | i = alloc_cciss_hba(pdev); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4629 | if (i < 0) |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 4630 | return -1; |
Mike Miller | 1f8ef38 | 2005-09-13 01:25:21 -0700 | [diff] [blame] | 4631 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4632 | h = hba[i]; |
| 4633 | h->pdev = pdev; |
| 4634 | h->busy_initializing = 1; |
| 4635 | INIT_HLIST_HEAD(&h->cmpQ); |
| 4636 | INIT_HLIST_HEAD(&h->reqQ); |
| 4637 | mutex_init(&h->busy_shutting_down); |
Mike Miller | 1f8ef38 | 2005-09-13 01:25:21 -0700 | [diff] [blame] | 4638 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4639 | if (cciss_pci_init(h) != 0) |
Stephen M. Cameron | 2cfa948 | 2009-10-13 09:18:22 +0200 | [diff] [blame] | 4640 | goto clean_no_release_regions; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4641 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4642 | sprintf(h->devname, "cciss%d", i); |
| 4643 | h->ctlr = i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4644 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4645 | init_completion(&h->scan_wait); |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 4646 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4647 | if (cciss_create_hba_sysfs_entry(h)) |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4648 | goto clean0; |
| 4649 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4650 | /* configure PCI DMA stuff */ |
Yang Hongyang | 6a35528 | 2009-04-06 19:01:13 -0700 | [diff] [blame] | 4651 | if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) |
Bjorn Helgaas | 40aabb5 | 2006-06-25 05:49:03 -0700 | [diff] [blame] | 4652 | dac = 1; |
Yang Hongyang | 284901a | 2009-04-06 19:01:15 -0700 | [diff] [blame] | 4653 | else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) |
Bjorn Helgaas | 40aabb5 | 2006-06-25 05:49:03 -0700 | [diff] [blame] | 4654 | dac = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4655 | else { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4656 | dev_err(&h->pdev->dev, "no suitable DMA available\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4657 | goto clean1; |
| 4658 | } |
| 4659 | |
| 4660 | /* |
| 4661 | * register with the major number, or get a dynamic major number |
| 4662 | * by passing 0 as argument. This is done for greater than |
| 4663 | * 8 controller support. |
| 4664 | */ |
| 4665 | if (i < MAX_CTLR_ORIG) |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4666 | h->major = COMPAQ_CISS_MAJOR + i; |
| 4667 | rc = register_blkdev(h->major, h->devname); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4668 | if (rc == -EBUSY || rc == -EINVAL) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4669 | dev_err(&h->pdev->dev, |
| 4670 | "Unable to get major number %d for %s " |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4671 | "on hba %d\n", h->major, h->devname, i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4672 | goto clean1; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4673 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4674 | if (i >= MAX_CTLR_ORIG) |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4675 | h->major = rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4676 | } |
| 4677 | |
| 4678 | /* make sure the board interrupts are off */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4679 | h->access.set_intr_mask(h, CCISS_INTR_OFF); |
| 4680 | if (h->msi_vector || h->msix_vector) { |
| 4681 | if (request_irq(h->intr[PERF_MODE_INT], |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 4682 | do_cciss_msix_intr, |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4683 | IRQF_DISABLED, h->devname, h)) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4684 | dev_err(&h->pdev->dev, "Unable to get irq %d for %s\n", |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4685 | h->intr[PERF_MODE_INT], h->devname); |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 4686 | goto clean2; |
| 4687 | } |
| 4688 | } else { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4689 | if (request_irq(h->intr[PERF_MODE_INT], do_cciss_intx, |
| 4690 | IRQF_DISABLED, h->devname, h)) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4691 | dev_err(&h->pdev->dev, "Unable to get irq %d for %s\n", |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4692 | h->intr[PERF_MODE_INT], h->devname); |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 4693 | goto clean2; |
| 4694 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4695 | } |
Bjorn Helgaas | 40aabb5 | 2006-06-25 05:49:03 -0700 | [diff] [blame] | 4696 | |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4697 | 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] | 4698 | h->devname, pdev->device, pci_name(pdev), |
| 4699 | h->intr[PERF_MODE_INT], dac ? "" : " not"); |
Bjorn Helgaas | 40aabb5 | 2006-06-25 05:49:03 -0700 | [diff] [blame] | 4700 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4701 | h->cmd_pool_bits = |
| 4702 | kmalloc(DIV_ROUND_UP(h->nr_cmds, BITS_PER_LONG) |
Julia Lawall | 061837b | 2008-09-22 14:57:16 -0700 | [diff] [blame] | 4703 | * sizeof(unsigned long), GFP_KERNEL); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4704 | h->cmd_pool = (CommandList_struct *) |
| 4705 | pci_alloc_consistent(h->pdev, |
| 4706 | h->nr_cmds * sizeof(CommandList_struct), |
| 4707 | &(h->cmd_pool_dhandle)); |
| 4708 | h->errinfo_pool = (ErrorInfo_struct *) |
| 4709 | pci_alloc_consistent(h->pdev, |
| 4710 | h->nr_cmds * sizeof(ErrorInfo_struct), |
| 4711 | &(h->errinfo_pool_dhandle)); |
| 4712 | if ((h->cmd_pool_bits == NULL) |
| 4713 | || (h->cmd_pool == NULL) |
| 4714 | || (h->errinfo_pool == NULL)) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4715 | dev_err(&h->pdev->dev, "out of memory"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4716 | goto clean4; |
| 4717 | } |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 4718 | |
| 4719 | /* Need space for temp scatter list */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4720 | h->scatter_list = kmalloc(h->max_commands * |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 4721 | sizeof(struct scatterlist *), |
| 4722 | GFP_KERNEL); |
Dan Carpenter | 4ee69851 | 2010-08-23 12:28:15 +0200 | [diff] [blame] | 4723 | if (!h->scatter_list) |
| 4724 | goto clean4; |
| 4725 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4726 | for (k = 0; k < h->nr_cmds; k++) { |
| 4727 | h->scatter_list[k] = kmalloc(sizeof(struct scatterlist) * |
| 4728 | h->maxsgentries, |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 4729 | GFP_KERNEL); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4730 | if (h->scatter_list[k] == NULL) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4731 | dev_err(&h->pdev->dev, |
| 4732 | "could not allocate s/g lists\n"); |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 4733 | goto clean4; |
| 4734 | } |
| 4735 | } |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4736 | h->cmd_sg_list = cciss_allocate_sg_chain_blocks(h, |
| 4737 | h->chainsize, h->nr_cmds); |
| 4738 | if (!h->cmd_sg_list && h->chainsize > 0) |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 4739 | goto clean4; |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 4740 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4741 | spin_lock_init(&h->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4742 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4743 | /* Initialize the pdev driver private data. |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4744 | have it point to h. */ |
| 4745 | pci_set_drvdata(pdev, h); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4746 | /* command and error info recs zeroed out before |
| 4747 | they are used */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4748 | memset(h->cmd_pool_bits, 0, |
| 4749 | DIV_ROUND_UP(h->nr_cmds, BITS_PER_LONG) |
Julia Lawall | 061837b | 2008-09-22 14:57:16 -0700 | [diff] [blame] | 4750 | * sizeof(unsigned long)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4751 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4752 | h->num_luns = 0; |
| 4753 | h->highest_lun = -1; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 4754 | for (j = 0; j < CISS_MAX_LUN; j++) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4755 | h->drv[j] = NULL; |
| 4756 | h->gendisk[j] = NULL; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 4757 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4758 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4759 | cciss_scsi_setup(h); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4760 | |
| 4761 | /* Turn the interrupts on so we can service requests */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4762 | h->access.set_intr_mask(h, CCISS_INTR_ON); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4763 | |
Mike Miller | 22bece0 | 2008-11-06 12:53:25 -0800 | [diff] [blame] | 4764 | /* Get the firmware version */ |
| 4765 | inq_buff = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
| 4766 | if (inq_buff == NULL) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4767 | dev_err(&h->pdev->dev, "out of memory\n"); |
Mike Miller | 22bece0 | 2008-11-06 12:53:25 -0800 | [diff] [blame] | 4768 | goto clean4; |
| 4769 | } |
| 4770 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4771 | return_code = sendcmd_withirq(h, CISS_INQUIRY, inq_buff, |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 4772 | sizeof(InquiryData_struct), 0, CTLR_LUNID, TYPE_CMD); |
Mike Miller | 22bece0 | 2008-11-06 12:53:25 -0800 | [diff] [blame] | 4773 | if (return_code == IO_OK) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4774 | h->firm_ver[0] = inq_buff->data_byte[32]; |
| 4775 | h->firm_ver[1] = inq_buff->data_byte[33]; |
| 4776 | h->firm_ver[2] = inq_buff->data_byte[34]; |
| 4777 | h->firm_ver[3] = inq_buff->data_byte[35]; |
Mike Miller | 22bece0 | 2008-11-06 12:53:25 -0800 | [diff] [blame] | 4778 | } else { /* send command failed */ |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4779 | dev_warn(&h->pdev->dev, "unable to determine firmware" |
Mike Miller | 22bece0 | 2008-11-06 12:53:25 -0800 | [diff] [blame] | 4780 | " version of controller\n"); |
| 4781 | } |
Eric Dumazet | 212a502 | 2009-08-24 10:01:53 +0200 | [diff] [blame] | 4782 | kfree(inq_buff); |
Mike Miller | 22bece0 | 2008-11-06 12:53:25 -0800 | [diff] [blame] | 4783 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4784 | cciss_procinit(h); |
Mike Miller | 92c4231a | 2006-12-06 20:35:06 -0800 | [diff] [blame] | 4785 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4786 | h->cciss_max_sectors = 8192; |
Mike Miller | 92c4231a | 2006-12-06 20:35:06 -0800 | [diff] [blame] | 4787 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4788 | rebuild_lun_table(h, 1, 0); |
| 4789 | h->busy_initializing = 0; |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 4790 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4791 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 4792 | clean4: |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4793 | kfree(h->cmd_pool_bits); |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 4794 | /* Free up sg elements */ |
Dan Carpenter | b0722cb | 2010-09-13 14:09:33 +0200 | [diff] [blame] | 4795 | for (k-- ; k >= 0; k--) |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4796 | kfree(h->scatter_list[k]); |
| 4797 | kfree(h->scatter_list); |
| 4798 | cciss_free_sg_chain_blocks(h->cmd_sg_list, h->nr_cmds); |
| 4799 | if (h->cmd_pool) |
| 4800 | pci_free_consistent(h->pdev, |
| 4801 | h->nr_cmds * sizeof(CommandList_struct), |
| 4802 | h->cmd_pool, h->cmd_pool_dhandle); |
| 4803 | if (h->errinfo_pool) |
| 4804 | pci_free_consistent(h->pdev, |
| 4805 | h->nr_cmds * sizeof(ErrorInfo_struct), |
| 4806 | h->errinfo_pool, |
| 4807 | h->errinfo_pool_dhandle); |
| 4808 | free_irq(h->intr[PERF_MODE_INT], h); |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 4809 | clean2: |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4810 | unregister_blkdev(h->major, h->devname); |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 4811 | clean1: |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4812 | cciss_destroy_hba_sysfs_entry(h); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4813 | clean0: |
Stephen M. Cameron | 2cfa948 | 2009-10-13 09:18:22 +0200 | [diff] [blame] | 4814 | pci_release_regions(pdev); |
| 4815 | clean_no_release_regions: |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4816 | h->busy_initializing = 0; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 4817 | |
Mike Miller | 872225c | 2006-12-13 00:34:22 -0800 | [diff] [blame] | 4818 | /* |
| 4819 | * Deliberately omit pci_disable_device(): it does something nasty to |
| 4820 | * Smart Array controllers that pci_enable_device does not undo |
| 4821 | */ |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 4822 | pci_set_drvdata(pdev, NULL); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4823 | free_hba(h); |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 4824 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4825 | } |
| 4826 | |
Gerald Britton | e9ca75b | 2007-05-14 13:53:01 -0400 | [diff] [blame] | 4827 | static void cciss_shutdown(struct pci_dev *pdev) |
| 4828 | { |
Stephen M. Cameron | 29009a0 | 2009-11-12 12:49:35 -0600 | [diff] [blame] | 4829 | ctlr_info_t *h; |
| 4830 | char *flush_buf; |
Gerald Britton | e9ca75b | 2007-05-14 13:53:01 -0400 | [diff] [blame] | 4831 | int return_code; |
| 4832 | |
Stephen M. Cameron | 29009a0 | 2009-11-12 12:49:35 -0600 | [diff] [blame] | 4833 | h = pci_get_drvdata(pdev); |
| 4834 | flush_buf = kzalloc(4, GFP_KERNEL); |
| 4835 | if (!flush_buf) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4836 | dev_warn(&h->pdev->dev, "cache not flushed, out of memory.\n"); |
Gerald Britton | e9ca75b | 2007-05-14 13:53:01 -0400 | [diff] [blame] | 4837 | return; |
Gerald Britton | e9ca75b | 2007-05-14 13:53:01 -0400 | [diff] [blame] | 4838 | } |
Stephen M. Cameron | 29009a0 | 2009-11-12 12:49:35 -0600 | [diff] [blame] | 4839 | /* write all data in the battery backed cache to disk */ |
| 4840 | memset(flush_buf, 0, 4); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4841 | return_code = sendcmd_withirq(h, CCISS_CACHE_FLUSH, flush_buf, |
Stephen M. Cameron | 29009a0 | 2009-11-12 12:49:35 -0600 | [diff] [blame] | 4842 | 4, 0, CTLR_LUNID, TYPE_CMD); |
| 4843 | kfree(flush_buf); |
| 4844 | if (return_code != IO_OK) |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4845 | dev_warn(&h->pdev->dev, "Error flushing cache\n"); |
Stephen M. Cameron | 29009a0 | 2009-11-12 12:49:35 -0600 | [diff] [blame] | 4846 | h->access.set_intr_mask(h, CCISS_INTR_OFF); |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 4847 | free_irq(h->intr[PERF_MODE_INT], h); |
Gerald Britton | e9ca75b | 2007-05-14 13:53:01 -0400 | [diff] [blame] | 4848 | } |
| 4849 | |
| 4850 | static void __devexit cciss_remove_one(struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4851 | { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4852 | ctlr_info_t *h; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4853 | int i, j; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4854 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4855 | if (pci_get_drvdata(pdev) == NULL) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4856 | dev_err(&pdev->dev, "Unable to remove device\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4857 | return; |
| 4858 | } |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 4859 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4860 | h = pci_get_drvdata(pdev); |
| 4861 | i = h->ctlr; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4862 | if (hba[i] == NULL) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4863 | dev_err(&pdev->dev, "device appears to already be removed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4864 | return; |
| 4865 | } |
Bjorn Helgaas | b655077 | 2007-04-11 23:28:43 -0700 | [diff] [blame] | 4866 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4867 | mutex_lock(&h->busy_shutting_down); |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 4868 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4869 | remove_from_scan_list(h); |
| 4870 | remove_proc_entry(h->devname, proc_cciss); |
| 4871 | unregister_blkdev(h->major, h->devname); |
Bjorn Helgaas | b655077 | 2007-04-11 23:28:43 -0700 | [diff] [blame] | 4872 | |
| 4873 | /* remove it from the disk list */ |
| 4874 | for (j = 0; j < CISS_MAX_LUN; j++) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4875 | struct gendisk *disk = h->gendisk[j]; |
Bjorn Helgaas | b655077 | 2007-04-11 23:28:43 -0700 | [diff] [blame] | 4876 | if (disk) { |
Jens Axboe | 165125e | 2007-07-24 09:28:11 +0200 | [diff] [blame] | 4877 | struct request_queue *q = disk->queue; |
Bjorn Helgaas | b655077 | 2007-04-11 23:28:43 -0700 | [diff] [blame] | 4878 | |
Stephen M. Cameron | 097d026 | 2009-09-17 13:47:19 -0500 | [diff] [blame] | 4879 | if (disk->flags & GENHD_FL_UP) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4880 | cciss_destroy_ld_sysfs_entry(h, j, 1); |
Bjorn Helgaas | b655077 | 2007-04-11 23:28:43 -0700 | [diff] [blame] | 4881 | del_gendisk(disk); |
Stephen M. Cameron | 097d026 | 2009-09-17 13:47:19 -0500 | [diff] [blame] | 4882 | } |
Bjorn Helgaas | b655077 | 2007-04-11 23:28:43 -0700 | [diff] [blame] | 4883 | if (q) |
| 4884 | blk_cleanup_queue(q); |
| 4885 | } |
| 4886 | } |
| 4887 | |
Mike Miller | ba198ef | 2008-08-04 11:54:55 +0200 | [diff] [blame] | 4888 | #ifdef CONFIG_CISS_SCSI_TAPE |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4889 | cciss_unregister_scsi(h); /* unhook from SCSI subsystem */ |
Mike Miller | ba198ef | 2008-08-04 11:54:55 +0200 | [diff] [blame] | 4890 | #endif |
Bjorn Helgaas | b655077 | 2007-04-11 23:28:43 -0700 | [diff] [blame] | 4891 | |
Gerald Britton | e9ca75b | 2007-05-14 13:53:01 -0400 | [diff] [blame] | 4892 | cciss_shutdown(pdev); |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 4893 | |
| 4894 | #ifdef CONFIG_PCI_MSI |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4895 | if (h->msix_vector) |
| 4896 | pci_disable_msix(h->pdev); |
| 4897 | else if (h->msi_vector) |
| 4898 | pci_disable_msi(h->pdev); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4899 | #endif /* CONFIG_PCI_MSI */ |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 4900 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4901 | iounmap(h->transtable); |
| 4902 | iounmap(h->cfgtable); |
| 4903 | iounmap(h->vaddr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4904 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4905 | pci_free_consistent(h->pdev, h->nr_cmds * sizeof(CommandList_struct), |
| 4906 | h->cmd_pool, h->cmd_pool_dhandle); |
| 4907 | pci_free_consistent(h->pdev, h->nr_cmds * sizeof(ErrorInfo_struct), |
| 4908 | h->errinfo_pool, h->errinfo_pool_dhandle); |
| 4909 | kfree(h->cmd_pool_bits); |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 4910 | /* Free up sg elements */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4911 | for (j = 0; j < h->nr_cmds; j++) |
| 4912 | kfree(h->scatter_list[j]); |
| 4913 | kfree(h->scatter_list); |
| 4914 | cciss_free_sg_chain_blocks(h->cmd_sg_list, h->nr_cmds); |
Mike Miller | 872225c | 2006-12-13 00:34:22 -0800 | [diff] [blame] | 4915 | /* |
| 4916 | * Deliberately omit pci_disable_device(): it does something nasty to |
| 4917 | * Smart Array controllers that pci_enable_device does not undo |
| 4918 | */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4919 | pci_release_regions(pdev); |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 4920 | pci_set_drvdata(pdev, NULL); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4921 | cciss_destroy_hba_sysfs_entry(h); |
| 4922 | mutex_unlock(&h->busy_shutting_down); |
| 4923 | free_hba(h); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4924 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4925 | |
| 4926 | static struct pci_driver cciss_pci_driver = { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4927 | .name = "cciss", |
| 4928 | .probe = cciss_init_one, |
| 4929 | .remove = __devexit_p(cciss_remove_one), |
| 4930 | .id_table = cciss_pci_device_id, /* id_table */ |
Gerald Britton | e9ca75b | 2007-05-14 13:53:01 -0400 | [diff] [blame] | 4931 | .shutdown = cciss_shutdown, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4932 | }; |
| 4933 | |
| 4934 | /* |
| 4935 | * 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] | 4936 | * 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] | 4937 | */ |
| 4938 | static int __init cciss_init(void) |
| 4939 | { |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4940 | int err; |
| 4941 | |
Jens Axboe | 10cbda9 | 2009-02-27 20:14:20 +0100 | [diff] [blame] | 4942 | /* |
| 4943 | * The hardware requires that commands are aligned on a 64-bit |
| 4944 | * boundary. Given that we use pci_alloc_consistent() to allocate an |
| 4945 | * array of them, the size must be a multiple of 8 bytes. |
| 4946 | */ |
Stephen M. Cameron | 1b7d0d2 | 2010-02-26 16:01:17 -0600 | [diff] [blame] | 4947 | BUILD_BUG_ON(sizeof(CommandList_struct) % COMMANDLIST_ALIGNMENT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4948 | printk(KERN_INFO DRIVER_NAME "\n"); |
| 4949 | |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4950 | err = bus_register(&cciss_bus_type); |
| 4951 | if (err) |
| 4952 | return err; |
| 4953 | |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 4954 | /* Start the scan thread */ |
| 4955 | cciss_scan_thread = kthread_run(scan_thread, NULL, "cciss_scan"); |
| 4956 | if (IS_ERR(cciss_scan_thread)) { |
| 4957 | err = PTR_ERR(cciss_scan_thread); |
| 4958 | goto err_bus_unregister; |
| 4959 | } |
| 4960 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4961 | /* Register for our PCI devices */ |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4962 | err = pci_register_driver(&cciss_pci_driver); |
| 4963 | if (err) |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 4964 | goto err_thread_stop; |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4965 | |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 4966 | return err; |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4967 | |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 4968 | err_thread_stop: |
| 4969 | kthread_stop(cciss_scan_thread); |
| 4970 | err_bus_unregister: |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4971 | bus_unregister(&cciss_bus_type); |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 4972 | |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4973 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4974 | } |
| 4975 | |
| 4976 | static void __exit cciss_cleanup(void) |
| 4977 | { |
| 4978 | int i; |
| 4979 | |
| 4980 | pci_unregister_driver(&cciss_pci_driver); |
| 4981 | /* double check that all controller entrys have been removed */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4982 | for (i = 0; i < MAX_CTLR; i++) { |
| 4983 | if (hba[i] != NULL) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4984 | dev_warn(&hba[i]->pdev->dev, |
| 4985 | "had to remove controller\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4986 | cciss_remove_one(hba[i]->pdev); |
| 4987 | } |
| 4988 | } |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 4989 | kthread_stop(cciss_scan_thread); |
Alexey Dobriyan | 928b4d8 | 2008-04-29 01:01:44 -0700 | [diff] [blame] | 4990 | remove_proc_entry("driver/cciss", NULL); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4991 | bus_unregister(&cciss_bus_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4992 | } |
| 4993 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4994 | module_init(cciss_init); |
| 4995 | module_exit(cciss_cleanup); |