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 | 24aac48 | 2008-06-12 15:21:34 -0700 | [diff] [blame] | 59 | #define DRIVER_NAME "HP CISS Driver (v 3.6.20)" |
| 60 | #define DRIVER_VERSION CCISS_DRIVER_VERSION(3, 6, 20) |
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"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | MODULE_SUPPORTED_DEVICE("HP SA5i SA5i+ SA532 SA5300 SA5312 SA641 SA642 SA6400" |
Mike Miller | 24aac48 | 2008-06-12 15:21:34 -0700 | [diff] [blame] | 66 | " SA6i P600 P800 P400 P400i E200 E200i E500 P700m" |
| 67 | " Smart Array G2 Series SAS/SATA Controllers"); |
| 68 | MODULE_VERSION("3.6.20"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | MODULE_LICENSE("GPL"); |
| 70 | |
Stephen M. Cameron | 2ec24ff | 2009-10-13 09:18:22 +0200 | [diff] [blame] | 71 | static int cciss_allow_hpsa; |
| 72 | module_param(cciss_allow_hpsa, int, S_IRUGO|S_IWUSR); |
| 73 | MODULE_PARM_DESC(cciss_allow_hpsa, |
| 74 | "Prevent cciss driver from accessing hardware known to be " |
| 75 | " supported by the hpsa driver"); |
| 76 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | #include "cciss_cmd.h" |
| 78 | #include "cciss.h" |
| 79 | #include <linux/cciss_ioctl.h> |
| 80 | |
| 81 | /* define the PCI info for the cards we can control */ |
| 82 | static const struct pci_device_id cciss_pci_device_id[] = { |
Bjorn Helgaas | f82ccdb | 2006-06-25 05:49:07 -0700 | [diff] [blame] | 83 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISS, 0x0E11, 0x4070}, |
| 84 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4080}, |
| 85 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4082}, |
| 86 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4083}, |
| 87 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x4091}, |
| 88 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409A}, |
| 89 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409B}, |
| 90 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409C}, |
| 91 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409D}, |
| 92 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSA, 0x103C, 0x3225}, |
| 93 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3223}, |
| 94 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3234}, |
| 95 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3235}, |
| 96 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3211}, |
| 97 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3212}, |
| 98 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3213}, |
| 99 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3214}, |
| 100 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3215}, |
Mike Miller | de92391 | 2006-12-06 20:35:03 -0800 | [diff] [blame] | 101 | {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] | 102 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x323D}, |
Mike Miller | 24aac48 | 2008-06-12 15:21:34 -0700 | [diff] [blame] | 103 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3241}, |
| 104 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3243}, |
| 105 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3245}, |
| 106 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3247}, |
| 107 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3249}, |
Mike Miller | 77ca728 | 2008-11-06 12:53:14 -0800 | [diff] [blame] | 108 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324A}, |
| 109 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324B}, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | {0,} |
| 111 | }; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 112 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | MODULE_DEVICE_TABLE(pci, cciss_pci_device_id); |
| 114 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | /* board_id = Subsystem Device ID & Vendor ID |
| 116 | * product = Marketing Name for the board |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 117 | * access = Address of the struct of function pointers |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | */ |
| 119 | static struct board_type products[] = { |
Mike Miller | 4915399 | 2008-07-04 10:00:02 -0700 | [diff] [blame] | 120 | {0x40700E11, "Smart Array 5300", &SA5_access}, |
| 121 | {0x40800E11, "Smart Array 5i", &SA5B_access}, |
| 122 | {0x40820E11, "Smart Array 532", &SA5B_access}, |
| 123 | {0x40830E11, "Smart Array 5312", &SA5B_access}, |
| 124 | {0x409A0E11, "Smart Array 641", &SA5_access}, |
| 125 | {0x409B0E11, "Smart Array 642", &SA5_access}, |
| 126 | {0x409C0E11, "Smart Array 6400", &SA5_access}, |
| 127 | {0x409D0E11, "Smart Array 6400 EM", &SA5_access}, |
| 128 | {0x40910E11, "Smart Array 6i", &SA5_access}, |
| 129 | {0x3225103C, "Smart Array P600", &SA5_access}, |
Mike Miller | 4915399 | 2008-07-04 10:00:02 -0700 | [diff] [blame] | 130 | {0x3235103C, "Smart Array P400i", &SA5_access}, |
| 131 | {0x3211103C, "Smart Array E200i", &SA5_access}, |
| 132 | {0x3212103C, "Smart Array E200", &SA5_access}, |
| 133 | {0x3213103C, "Smart Array E200i", &SA5_access}, |
| 134 | {0x3214103C, "Smart Array E200i", &SA5_access}, |
| 135 | {0x3215103C, "Smart Array E200i", &SA5_access}, |
| 136 | {0x3237103C, "Smart Array E500", &SA5_access}, |
Stephen M. Cameron | 2ec24ff | 2009-10-13 09:18:22 +0200 | [diff] [blame] | 137 | /* controllers below this line are also supported by the hpsa driver. */ |
| 138 | #define HPSA_BOUNDARY 0x3223103C |
| 139 | {0x3223103C, "Smart Array P800", &SA5_access}, |
| 140 | {0x3234103C, "Smart Array P400", &SA5_access}, |
Mike Miller | 4915399 | 2008-07-04 10:00:02 -0700 | [diff] [blame] | 141 | {0x323D103C, "Smart Array P700m", &SA5_access}, |
| 142 | {0x3241103C, "Smart Array P212", &SA5_access}, |
| 143 | {0x3243103C, "Smart Array P410", &SA5_access}, |
| 144 | {0x3245103C, "Smart Array P410i", &SA5_access}, |
| 145 | {0x3247103C, "Smart Array P411", &SA5_access}, |
| 146 | {0x3249103C, "Smart Array P812", &SA5_access}, |
Mike Miller | 77ca728 | 2008-11-06 12:53:14 -0800 | [diff] [blame] | 147 | {0x324A103C, "Smart Array P712m", &SA5_access}, |
| 148 | {0x324B103C, "Smart Array P711m", &SA5_access}, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | }; |
| 150 | |
Bjorn Helgaas | d14c4ab | 2006-06-25 05:49:04 -0700 | [diff] [blame] | 151 | /* 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] | 152 | #define MAX_CONFIG_WAIT 30000 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | #define MAX_IOCTL_CONFIG_WAIT 1000 |
| 154 | |
| 155 | /*define how many times we will try a command because of bus resets */ |
| 156 | #define MAX_CMD_RETRIES 3 |
| 157 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | #define MAX_CTLR 32 |
| 159 | |
| 160 | /* Originally cciss driver only supports 8 major numbers */ |
| 161 | #define MAX_CTLR_ORIG 8 |
| 162 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | static ctlr_info_t *hba[MAX_CTLR]; |
| 164 | |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 165 | static struct task_struct *cciss_scan_thread; |
| 166 | static DEFINE_MUTEX(scan_mutex); |
| 167 | static LIST_HEAD(scan_q); |
| 168 | |
Jens Axboe | 165125e | 2007-07-24 09:28:11 +0200 | [diff] [blame] | 169 | static void do_cciss_request(struct request_queue *q); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 170 | static irqreturn_t do_cciss_intr(int irq, void *dev_id); |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 171 | static int cciss_open(struct block_device *bdev, fmode_t mode); |
| 172 | static int cciss_release(struct gendisk *disk, fmode_t mode); |
| 173 | static int cciss_ioctl(struct block_device *bdev, fmode_t mode, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 174 | unsigned int cmd, unsigned long arg); |
Christoph Hellwig | a885c8c | 2006-01-08 01:02:50 -0800 | [diff] [blame] | 175 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | static int cciss_revalidate(struct gendisk *disk); |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 178 | 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] | 179 | static int deregister_disk(ctlr_info_t *h, int drv_index, |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 180 | int clear_all, int via_ioctl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 182 | static void cciss_read_capacity(int ctlr, int logvol, |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 183 | sector_t *total_size, unsigned int *block_size); |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 184 | static void cciss_read_capacity_16(int ctlr, int logvol, |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 185 | sector_t *total_size, unsigned int *block_size); |
| 186 | static void cciss_geometry_inquiry(int ctlr, int logvol, |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 187 | sector_t total_size, |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 188 | unsigned int block_size, InquiryData_struct *inq_buff, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 189 | drive_info_struct *drv); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 190 | static void __devinit cciss_interrupt_mode(ctlr_info_t *, struct pci_dev *, |
| 191 | __u32); |
| 192 | static void start_io(ctlr_info_t *h); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 193 | static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size, |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 194 | __u8 page_code, unsigned char scsi3addr[], |
| 195 | int cmd_type); |
scameron@beardog.cca.cpqcorp.net | 85cc61a | 2009-06-08 16:07:45 -0500 | [diff] [blame] | 196 | static int sendcmd_withirq_core(ctlr_info_t *h, CommandList_struct *c, |
| 197 | int attempt_retry); |
| 198 | static int process_sendcmd_error(ctlr_info_t *h, CommandList_struct *c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 200 | static void fail_all_cmds(unsigned long ctlr); |
Andrew Patterson | d6f4965 | 2009-09-17 13:47:03 -0500 | [diff] [blame] | 201 | static int add_to_scan_list(struct ctlr_info *h); |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 202 | static int scan_thread(void *data); |
| 203 | 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] | 204 | static void cciss_hba_release(struct device *dev); |
| 205 | static void cciss_device_release(struct device *dev); |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 206 | 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] | 207 | static void cciss_free_drive_info(ctlr_info_t *h, int drv_index); |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 208 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | #ifdef CONFIG_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | static void cciss_procinit(int i); |
| 211 | #else |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 212 | static void cciss_procinit(int i) |
| 213 | { |
| 214 | } |
| 215 | #endif /* CONFIG_PROC_FS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | |
| 217 | #ifdef CONFIG_COMPAT |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 218 | static int cciss_compat_ioctl(struct block_device *, fmode_t, |
| 219 | unsigned, unsigned long); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | #endif |
| 221 | |
Alexey Dobriyan | 83d5cde | 2009-09-21 17:01:13 -0700 | [diff] [blame] | 222 | static const struct block_device_operations cciss_fops = { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 223 | .owner = THIS_MODULE, |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 224 | .open = cciss_open, |
| 225 | .release = cciss_release, |
| 226 | .locked_ioctl = cciss_ioctl, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 227 | .getgeo = cciss_getgeo, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 228 | #ifdef CONFIG_COMPAT |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 229 | .compat_ioctl = cciss_compat_ioctl, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | #endif |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 231 | .revalidate_disk = cciss_revalidate, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | }; |
| 233 | |
| 234 | /* |
| 235 | * Enqueuing and dequeuing functions for cmdlists. |
| 236 | */ |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 237 | static inline void addQ(struct hlist_head *list, CommandList_struct *c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | { |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 239 | hlist_add_head(&c->list, list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 240 | } |
| 241 | |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 242 | static inline void removeQ(CommandList_struct *c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | { |
Hannes Reinecke | b59e64d | 2009-07-02 22:02:06 +0200 | [diff] [blame] | 244 | /* |
| 245 | * After kexec/dump some commands might still |
| 246 | * be in flight, which the firmware will try |
| 247 | * to complete. Resetting the firmware doesn't work |
| 248 | * with old fw revisions, so we have to mark |
| 249 | * them off as 'stale' to prevent the driver from |
| 250 | * falling over. |
| 251 | */ |
| 252 | if (WARN_ON(hlist_unhashed(&c->list))) { |
| 253 | c->cmd_type = CMD_MSG_STALE; |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 254 | return; |
Hannes Reinecke | b59e64d | 2009-07-02 22:02:06 +0200 | [diff] [blame] | 255 | } |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 256 | |
| 257 | hlist_del_init(&c->list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | } |
| 259 | |
Stephen M. Cameron | dccc9b5 | 2010-02-26 16:01:27 -0600 | [diff] [blame] | 260 | 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] | 261 | int nr_cmds) |
| 262 | { |
| 263 | int i; |
| 264 | |
| 265 | if (!cmd_sg_list) |
| 266 | return; |
| 267 | for (i = 0; i < nr_cmds; i++) { |
Stephen M. Cameron | dccc9b5 | 2010-02-26 16:01:27 -0600 | [diff] [blame] | 268 | kfree(cmd_sg_list[i]); |
| 269 | cmd_sg_list[i] = NULL; |
Stephen M. Cameron | 49fc560 | 2010-02-26 16:01:22 -0600 | [diff] [blame] | 270 | } |
| 271 | kfree(cmd_sg_list); |
| 272 | } |
| 273 | |
Stephen M. Cameron | dccc9b5 | 2010-02-26 16:01:27 -0600 | [diff] [blame] | 274 | static SGDescriptor_struct **cciss_allocate_sg_chain_blocks( |
| 275 | ctlr_info_t *h, int chainsize, int nr_cmds) |
Stephen M. Cameron | 49fc560 | 2010-02-26 16:01:22 -0600 | [diff] [blame] | 276 | { |
| 277 | int j; |
Stephen M. Cameron | dccc9b5 | 2010-02-26 16:01:27 -0600 | [diff] [blame] | 278 | SGDescriptor_struct **cmd_sg_list; |
Stephen M. Cameron | 49fc560 | 2010-02-26 16:01:22 -0600 | [diff] [blame] | 279 | |
| 280 | if (chainsize <= 0) |
| 281 | return NULL; |
| 282 | |
| 283 | cmd_sg_list = kmalloc(sizeof(*cmd_sg_list) * nr_cmds, GFP_KERNEL); |
| 284 | if (!cmd_sg_list) |
| 285 | return NULL; |
| 286 | |
| 287 | /* Build up chain blocks for each command */ |
| 288 | for (j = 0; j < nr_cmds; j++) { |
Stephen M. Cameron | 49fc560 | 2010-02-26 16:01:22 -0600 | [diff] [blame] | 289 | /* Need a block of chainsized s/g elements. */ |
Stephen M. Cameron | dccc9b5 | 2010-02-26 16:01:27 -0600 | [diff] [blame] | 290 | cmd_sg_list[j] = kmalloc((chainsize * |
| 291 | sizeof(*cmd_sg_list[j])), GFP_KERNEL); |
| 292 | if (!cmd_sg_list[j]) { |
Stephen M. Cameron | 49fc560 | 2010-02-26 16:01:22 -0600 | [diff] [blame] | 293 | dev_err(&h->pdev->dev, "Cannot get memory " |
| 294 | "for s/g chains.\n"); |
| 295 | goto clean; |
| 296 | } |
| 297 | } |
| 298 | return cmd_sg_list; |
| 299 | clean: |
| 300 | cciss_free_sg_chain_blocks(cmd_sg_list, nr_cmds); |
| 301 | return NULL; |
| 302 | } |
| 303 | |
Stephen M. Cameron | d45033e | 2010-02-26 16:01:37 -0600 | [diff] [blame] | 304 | static void cciss_unmap_sg_chain_block(ctlr_info_t *h, CommandList_struct *c) |
| 305 | { |
| 306 | SGDescriptor_struct *chain_sg; |
| 307 | u64bit temp64; |
| 308 | |
| 309 | if (c->Header.SGTotal <= h->max_cmd_sgentries) |
| 310 | return; |
| 311 | |
| 312 | chain_sg = &c->SG[h->max_cmd_sgentries - 1]; |
| 313 | temp64.val32.lower = chain_sg->Addr.lower; |
| 314 | temp64.val32.upper = chain_sg->Addr.upper; |
| 315 | pci_unmap_single(h->pdev, temp64.val, chain_sg->Len, PCI_DMA_TODEVICE); |
| 316 | } |
| 317 | |
| 318 | static void cciss_map_sg_chain_block(ctlr_info_t *h, CommandList_struct *c, |
| 319 | SGDescriptor_struct *chain_block, int len) |
| 320 | { |
| 321 | SGDescriptor_struct *chain_sg; |
| 322 | u64bit temp64; |
| 323 | |
| 324 | chain_sg = &c->SG[h->max_cmd_sgentries - 1]; |
| 325 | chain_sg->Ext = CCISS_SG_CHAIN; |
| 326 | chain_sg->Len = len; |
| 327 | temp64.val = pci_map_single(h->pdev, chain_block, len, |
| 328 | PCI_DMA_TODEVICE); |
| 329 | chain_sg->Addr.lower = temp64.val32.lower; |
| 330 | chain_sg->Addr.upper = temp64.val32.upper; |
| 331 | } |
| 332 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | #include "cciss_scsi.c" /* For SCSI tape support */ |
| 334 | |
Alexander Beregalov | 1e6f2dc | 2009-09-24 16:15:38 +0200 | [diff] [blame] | 335 | static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG", |
| 336 | "UNKNOWN" |
| 337 | }; |
Kulikov Vasiliy | 0e4a9d0 | 2010-06-28 15:54:44 +0400 | [diff] [blame] | 338 | #define RAID_UNKNOWN (ARRAY_SIZE(raid_label)-1) |
Randy Dunlap | 0f5486e | 2006-12-29 16:48:31 -0800 | [diff] [blame] | 339 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | #ifdef CONFIG_PROC_FS |
| 341 | |
| 342 | /* |
| 343 | * Report information about this controller. |
| 344 | */ |
| 345 | #define ENG_GIG 1000000000 |
| 346 | #define ENG_GIG_FACTOR (ENG_GIG/512) |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 347 | #define ENGAGE_SCSI "engage scsi" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | |
| 349 | static struct proc_dir_entry *proc_cciss; |
| 350 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 351 | static void cciss_seq_show_header(struct seq_file *seq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | { |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 353 | ctlr_info_t *h = seq->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 355 | seq_printf(seq, "%s: HP %s Controller\n" |
| 356 | "Board ID: 0x%08lx\n" |
| 357 | "Firmware Version: %c%c%c%c\n" |
| 358 | "IRQ: %d\n" |
| 359 | "Logical drives: %d\n" |
| 360 | "Current Q depth: %d\n" |
| 361 | "Current # commands on controller: %d\n" |
| 362 | "Max Q depth since init: %d\n" |
| 363 | "Max # commands on controller since init: %d\n" |
| 364 | "Max SG entries since init: %d\n", |
| 365 | h->devname, |
| 366 | h->product_name, |
| 367 | (unsigned long)h->board_id, |
| 368 | h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], |
| 369 | h->firm_ver[3], (unsigned int)h->intr[SIMPLE_MODE_INT], |
| 370 | h->num_luns, |
| 371 | h->Qdepth, h->commands_outstanding, |
| 372 | h->maxQsinceinit, h->max_outstanding, h->maxSG); |
| 373 | |
| 374 | #ifdef CONFIG_CISS_SCSI_TAPE |
| 375 | cciss_seq_tape_report(seq, h->ctlr); |
| 376 | #endif /* CONFIG_CISS_SCSI_TAPE */ |
| 377 | } |
| 378 | |
| 379 | static void *cciss_seq_start(struct seq_file *seq, loff_t *pos) |
| 380 | { |
| 381 | ctlr_info_t *h = seq->private; |
| 382 | unsigned ctlr = h->ctlr; |
| 383 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | |
| 385 | /* prevent displaying bogus info during configuration |
| 386 | * or deconfiguration of a logical volume |
| 387 | */ |
| 388 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); |
| 389 | if (h->busy_configuring) { |
| 390 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 391 | return ERR_PTR(-EBUSY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | } |
| 393 | h->busy_configuring = 1; |
| 394 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
| 395 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 396 | if (*pos == 0) |
| 397 | cciss_seq_show_header(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 | return pos; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | } |
| 401 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 402 | static int cciss_seq_show(struct seq_file *seq, void *v) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 403 | { |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 404 | sector_t vol_sz, vol_sz_frac; |
| 405 | ctlr_info_t *h = seq->private; |
| 406 | unsigned ctlr = h->ctlr; |
| 407 | loff_t *pos = v; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 408 | drive_info_struct *drv = h->drv[*pos]; |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 409 | |
| 410 | if (*pos > h->highest_lun) |
| 411 | return 0; |
| 412 | |
Stephen M. Cameron | 531c2dc | 2010-02-05 13:14:04 +0100 | [diff] [blame] | 413 | if (drv == NULL) /* it's possible for h->drv[] to have holes. */ |
| 414 | return 0; |
| 415 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 416 | if (drv->heads == 0) |
| 417 | return 0; |
| 418 | |
| 419 | vol_sz = drv->nr_blocks; |
| 420 | vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR); |
| 421 | vol_sz_frac *= 100; |
| 422 | sector_div(vol_sz_frac, ENG_GIG_FACTOR); |
| 423 | |
Stephen M. Cameron | fa52bec | 2009-09-17 13:48:15 -0500 | [diff] [blame] | 424 | if (drv->raid_level < 0 || drv->raid_level > RAID_UNKNOWN) |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 425 | drv->raid_level = RAID_UNKNOWN; |
| 426 | seq_printf(seq, "cciss/c%dd%d:" |
| 427 | "\t%4u.%02uGB\tRAID %s\n", |
| 428 | ctlr, (int) *pos, (int)vol_sz, (int)vol_sz_frac, |
| 429 | raid_label[drv->raid_level]); |
| 430 | return 0; |
| 431 | } |
| 432 | |
| 433 | static void *cciss_seq_next(struct seq_file *seq, void *v, loff_t *pos) |
| 434 | { |
| 435 | ctlr_info_t *h = seq->private; |
| 436 | |
| 437 | if (*pos > h->highest_lun) |
| 438 | return NULL; |
| 439 | *pos += 1; |
| 440 | |
| 441 | return pos; |
| 442 | } |
| 443 | |
| 444 | static void cciss_seq_stop(struct seq_file *seq, void *v) |
| 445 | { |
| 446 | ctlr_info_t *h = seq->private; |
| 447 | |
| 448 | /* Only reset h->busy_configuring if we succeeded in setting |
| 449 | * it during cciss_seq_start. */ |
| 450 | if (v == ERR_PTR(-EBUSY)) |
| 451 | return; |
| 452 | |
| 453 | h->busy_configuring = 0; |
| 454 | } |
| 455 | |
James Morris | 88e9d34 | 2009-09-22 16:43:43 -0700 | [diff] [blame] | 456 | static const struct seq_operations cciss_seq_ops = { |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 457 | .start = cciss_seq_start, |
| 458 | .show = cciss_seq_show, |
| 459 | .next = cciss_seq_next, |
| 460 | .stop = cciss_seq_stop, |
| 461 | }; |
| 462 | |
| 463 | static int cciss_seq_open(struct inode *inode, struct file *file) |
| 464 | { |
| 465 | int ret = seq_open(file, &cciss_seq_ops); |
| 466 | struct seq_file *seq = file->private_data; |
| 467 | |
| 468 | if (!ret) |
| 469 | seq->private = PDE(inode)->data; |
| 470 | |
| 471 | return ret; |
| 472 | } |
| 473 | |
| 474 | static ssize_t |
| 475 | cciss_proc_write(struct file *file, const char __user *buf, |
| 476 | size_t length, loff_t *ppos) |
| 477 | { |
| 478 | int err; |
| 479 | char *buffer; |
| 480 | |
| 481 | #ifndef CONFIG_CISS_SCSI_TAPE |
| 482 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | #endif |
| 484 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 485 | if (!buf || length > PAGE_SIZE - 1) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 486 | return -EINVAL; |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 487 | |
| 488 | buffer = (char *)__get_free_page(GFP_KERNEL); |
| 489 | if (!buffer) |
| 490 | return -ENOMEM; |
| 491 | |
| 492 | err = -EFAULT; |
| 493 | if (copy_from_user(buffer, buf, length)) |
| 494 | goto out; |
| 495 | buffer[length] = '\0'; |
| 496 | |
| 497 | #ifdef CONFIG_CISS_SCSI_TAPE |
| 498 | if (strncmp(ENGAGE_SCSI, buffer, sizeof ENGAGE_SCSI - 1) == 0) { |
| 499 | struct seq_file *seq = file->private_data; |
| 500 | ctlr_info_t *h = seq->private; |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 501 | |
Stephen M. Cameron | 8721c81 | 2009-11-12 12:50:06 -0600 | [diff] [blame] | 502 | err = cciss_engage_scsi(h->ctlr); |
| 503 | if (err == 0) |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 504 | err = length; |
| 505 | } else |
| 506 | #endif /* CONFIG_CISS_SCSI_TAPE */ |
| 507 | err = -EINVAL; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 508 | /* might be nice to have "disengage" too, but it's not |
| 509 | safely possible. (only 1 module use count, lock issues.) */ |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 510 | |
| 511 | out: |
| 512 | free_page((unsigned long)buffer); |
| 513 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 514 | } |
| 515 | |
Alexey Dobriyan | 828c095 | 2009-10-01 15:43:56 -0700 | [diff] [blame] | 516 | static const struct file_operations cciss_proc_fops = { |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 517 | .owner = THIS_MODULE, |
| 518 | .open = cciss_seq_open, |
| 519 | .read = seq_read, |
| 520 | .llseek = seq_lseek, |
| 521 | .release = seq_release, |
| 522 | .write = cciss_proc_write, |
| 523 | }; |
| 524 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | static void __devinit cciss_procinit(int i) |
| 526 | { |
| 527 | struct proc_dir_entry *pde; |
| 528 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 529 | if (proc_cciss == NULL) |
Alexey Dobriyan | 928b4d8 | 2008-04-29 01:01:44 -0700 | [diff] [blame] | 530 | proc_cciss = proc_mkdir("driver/cciss", NULL); |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 531 | if (!proc_cciss) |
| 532 | return; |
Denis V. Lunev | 3dfcf9c | 2008-05-01 04:35:14 -0700 | [diff] [blame] | 533 | pde = proc_create_data(hba[i]->devname, S_IWUSR | S_IRUSR | S_IRGRP | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 534 | S_IROTH, proc_cciss, |
Denis V. Lunev | 3dfcf9c | 2008-05-01 04:35:14 -0700 | [diff] [blame] | 535 | &cciss_proc_fops, hba[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 536 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 537 | #endif /* CONFIG_PROC_FS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 538 | |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 539 | #define MAX_PRODUCT_NAME_LEN 19 |
| 540 | |
| 541 | #define to_hba(n) container_of(n, struct ctlr_info, dev) |
| 542 | #define to_drv(n) container_of(n, drive_info_struct, dev) |
| 543 | |
Andrew Patterson | d6f4965 | 2009-09-17 13:47:03 -0500 | [diff] [blame] | 544 | static ssize_t host_store_rescan(struct device *dev, |
| 545 | struct device_attribute *attr, |
| 546 | const char *buf, size_t count) |
| 547 | { |
| 548 | struct ctlr_info *h = to_hba(dev); |
| 549 | |
| 550 | add_to_scan_list(h); |
| 551 | wake_up_process(cciss_scan_thread); |
| 552 | wait_for_completion_interruptible(&h->scan_wait); |
| 553 | |
| 554 | return count; |
| 555 | } |
Alex Chiang | 8ba95c6 | 2009-11-12 12:49:14 -0600 | [diff] [blame] | 556 | static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 557 | |
| 558 | static ssize_t dev_show_unique_id(struct device *dev, |
| 559 | struct device_attribute *attr, |
| 560 | char *buf) |
| 561 | { |
| 562 | drive_info_struct *drv = to_drv(dev); |
| 563 | struct ctlr_info *h = to_hba(drv->dev.parent); |
| 564 | __u8 sn[16]; |
| 565 | unsigned long flags; |
| 566 | int ret = 0; |
| 567 | |
| 568 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
| 569 | if (h->busy_configuring) |
| 570 | ret = -EBUSY; |
| 571 | else |
| 572 | memcpy(sn, drv->serial_no, sizeof(sn)); |
| 573 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
| 574 | |
| 575 | if (ret) |
| 576 | return ret; |
| 577 | else |
| 578 | return snprintf(buf, 16 * 2 + 2, |
| 579 | "%02X%02X%02X%02X%02X%02X%02X%02X" |
| 580 | "%02X%02X%02X%02X%02X%02X%02X%02X\n", |
| 581 | sn[0], sn[1], sn[2], sn[3], |
| 582 | sn[4], sn[5], sn[6], sn[7], |
| 583 | sn[8], sn[9], sn[10], sn[11], |
| 584 | sn[12], sn[13], sn[14], sn[15]); |
| 585 | } |
Alex Chiang | 8ba95c6 | 2009-11-12 12:49:14 -0600 | [diff] [blame] | 586 | static DEVICE_ATTR(unique_id, S_IRUGO, dev_show_unique_id, NULL); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 587 | |
| 588 | static ssize_t dev_show_vendor(struct device *dev, |
| 589 | struct device_attribute *attr, |
| 590 | char *buf) |
| 591 | { |
| 592 | drive_info_struct *drv = to_drv(dev); |
| 593 | struct ctlr_info *h = to_hba(drv->dev.parent); |
| 594 | char vendor[VENDOR_LEN + 1]; |
| 595 | unsigned long flags; |
| 596 | int ret = 0; |
| 597 | |
| 598 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
| 599 | if (h->busy_configuring) |
| 600 | ret = -EBUSY; |
| 601 | else |
| 602 | memcpy(vendor, drv->vendor, VENDOR_LEN + 1); |
| 603 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
| 604 | |
| 605 | if (ret) |
| 606 | return ret; |
| 607 | else |
| 608 | return snprintf(buf, sizeof(vendor) + 1, "%s\n", drv->vendor); |
| 609 | } |
Alex Chiang | 8ba95c6 | 2009-11-12 12:49:14 -0600 | [diff] [blame] | 610 | static DEVICE_ATTR(vendor, S_IRUGO, dev_show_vendor, NULL); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 611 | |
| 612 | static ssize_t dev_show_model(struct device *dev, |
| 613 | struct device_attribute *attr, |
| 614 | char *buf) |
| 615 | { |
| 616 | drive_info_struct *drv = to_drv(dev); |
| 617 | struct ctlr_info *h = to_hba(drv->dev.parent); |
| 618 | char model[MODEL_LEN + 1]; |
| 619 | unsigned long flags; |
| 620 | int ret = 0; |
| 621 | |
| 622 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
| 623 | if (h->busy_configuring) |
| 624 | ret = -EBUSY; |
| 625 | else |
| 626 | memcpy(model, drv->model, MODEL_LEN + 1); |
| 627 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
| 628 | |
| 629 | if (ret) |
| 630 | return ret; |
| 631 | else |
| 632 | return snprintf(buf, sizeof(model) + 1, "%s\n", drv->model); |
| 633 | } |
Alex Chiang | 8ba95c6 | 2009-11-12 12:49:14 -0600 | [diff] [blame] | 634 | static DEVICE_ATTR(model, S_IRUGO, dev_show_model, NULL); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 635 | |
| 636 | static ssize_t dev_show_rev(struct device *dev, |
| 637 | struct device_attribute *attr, |
| 638 | char *buf) |
| 639 | { |
| 640 | drive_info_struct *drv = to_drv(dev); |
| 641 | struct ctlr_info *h = to_hba(drv->dev.parent); |
| 642 | char rev[REV_LEN + 1]; |
| 643 | unsigned long flags; |
| 644 | int ret = 0; |
| 645 | |
| 646 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
| 647 | if (h->busy_configuring) |
| 648 | ret = -EBUSY; |
| 649 | else |
| 650 | memcpy(rev, drv->rev, REV_LEN + 1); |
| 651 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
| 652 | |
| 653 | if (ret) |
| 654 | return ret; |
| 655 | else |
| 656 | return snprintf(buf, sizeof(rev) + 1, "%s\n", drv->rev); |
| 657 | } |
Alex Chiang | 8ba95c6 | 2009-11-12 12:49:14 -0600 | [diff] [blame] | 658 | static DEVICE_ATTR(rev, S_IRUGO, dev_show_rev, NULL); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 659 | |
Stephen M. Cameron | ce84a8a | 2009-09-17 13:48:10 -0500 | [diff] [blame] | 660 | static ssize_t cciss_show_lunid(struct device *dev, |
| 661 | struct device_attribute *attr, char *buf) |
| 662 | { |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 663 | drive_info_struct *drv = to_drv(dev); |
| 664 | struct ctlr_info *h = to_hba(drv->dev.parent); |
Stephen M. Cameron | ce84a8a | 2009-09-17 13:48:10 -0500 | [diff] [blame] | 665 | unsigned long flags; |
| 666 | unsigned char lunid[8]; |
| 667 | |
| 668 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
| 669 | if (h->busy_configuring) { |
| 670 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
| 671 | return -EBUSY; |
| 672 | } |
| 673 | if (!drv->heads) { |
| 674 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
| 675 | return -ENOTTY; |
| 676 | } |
| 677 | memcpy(lunid, drv->LunID, sizeof(lunid)); |
| 678 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
| 679 | return snprintf(buf, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n", |
| 680 | lunid[0], lunid[1], lunid[2], lunid[3], |
| 681 | lunid[4], lunid[5], lunid[6], lunid[7]); |
| 682 | } |
Alex Chiang | 8ba95c6 | 2009-11-12 12:49:14 -0600 | [diff] [blame] | 683 | static DEVICE_ATTR(lunid, S_IRUGO, cciss_show_lunid, NULL); |
Stephen M. Cameron | ce84a8a | 2009-09-17 13:48:10 -0500 | [diff] [blame] | 684 | |
Stephen M. Cameron | 3ff1111 | 2009-09-17 13:48:21 -0500 | [diff] [blame] | 685 | static ssize_t cciss_show_raid_level(struct device *dev, |
| 686 | struct device_attribute *attr, char *buf) |
| 687 | { |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 688 | drive_info_struct *drv = to_drv(dev); |
| 689 | struct ctlr_info *h = to_hba(drv->dev.parent); |
Stephen M. Cameron | 3ff1111 | 2009-09-17 13:48:21 -0500 | [diff] [blame] | 690 | int raid; |
| 691 | unsigned long flags; |
| 692 | |
| 693 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
| 694 | if (h->busy_configuring) { |
| 695 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
| 696 | return -EBUSY; |
| 697 | } |
| 698 | raid = drv->raid_level; |
| 699 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
| 700 | if (raid < 0 || raid > RAID_UNKNOWN) |
| 701 | raid = RAID_UNKNOWN; |
| 702 | |
| 703 | return snprintf(buf, strlen(raid_label[raid]) + 7, "RAID %s\n", |
| 704 | raid_label[raid]); |
| 705 | } |
Alex Chiang | 8ba95c6 | 2009-11-12 12:49:14 -0600 | [diff] [blame] | 706 | 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] | 707 | |
Stephen M. Cameron | e272afe | 2009-09-17 13:48:26 -0500 | [diff] [blame] | 708 | static ssize_t cciss_show_usage_count(struct device *dev, |
| 709 | struct device_attribute *attr, char *buf) |
| 710 | { |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 711 | drive_info_struct *drv = to_drv(dev); |
| 712 | struct ctlr_info *h = to_hba(drv->dev.parent); |
Stephen M. Cameron | e272afe | 2009-09-17 13:48:26 -0500 | [diff] [blame] | 713 | unsigned long flags; |
| 714 | int count; |
| 715 | |
| 716 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
| 717 | if (h->busy_configuring) { |
| 718 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
| 719 | return -EBUSY; |
| 720 | } |
| 721 | count = drv->usage_count; |
| 722 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
| 723 | return snprintf(buf, 20, "%d\n", count); |
| 724 | } |
Alex Chiang | 8ba95c6 | 2009-11-12 12:49:14 -0600 | [diff] [blame] | 725 | 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] | 726 | |
Andrew Patterson | d6f4965 | 2009-09-17 13:47:03 -0500 | [diff] [blame] | 727 | static struct attribute *cciss_host_attrs[] = { |
| 728 | &dev_attr_rescan.attr, |
| 729 | NULL |
| 730 | }; |
| 731 | |
| 732 | static struct attribute_group cciss_host_attr_group = { |
| 733 | .attrs = cciss_host_attrs, |
| 734 | }; |
| 735 | |
Jens Axboe | 9f792d9 | 2009-09-18 22:24:21 +0200 | [diff] [blame] | 736 | static const struct attribute_group *cciss_host_attr_groups[] = { |
Andrew Patterson | d6f4965 | 2009-09-17 13:47:03 -0500 | [diff] [blame] | 737 | &cciss_host_attr_group, |
| 738 | NULL |
| 739 | }; |
| 740 | |
| 741 | static struct device_type cciss_host_type = { |
| 742 | .name = "cciss_host", |
| 743 | .groups = cciss_host_attr_groups, |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 744 | .release = cciss_hba_release, |
Andrew Patterson | d6f4965 | 2009-09-17 13:47:03 -0500 | [diff] [blame] | 745 | }; |
| 746 | |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 747 | static struct attribute *cciss_dev_attrs[] = { |
| 748 | &dev_attr_unique_id.attr, |
| 749 | &dev_attr_model.attr, |
| 750 | &dev_attr_vendor.attr, |
| 751 | &dev_attr_rev.attr, |
Stephen M. Cameron | ce84a8a | 2009-09-17 13:48:10 -0500 | [diff] [blame] | 752 | &dev_attr_lunid.attr, |
Stephen M. Cameron | 3ff1111 | 2009-09-17 13:48:21 -0500 | [diff] [blame] | 753 | &dev_attr_raid_level.attr, |
Stephen M. Cameron | e272afe | 2009-09-17 13:48:26 -0500 | [diff] [blame] | 754 | &dev_attr_usage_count.attr, |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 755 | NULL |
| 756 | }; |
| 757 | |
| 758 | static struct attribute_group cciss_dev_attr_group = { |
| 759 | .attrs = cciss_dev_attrs, |
| 760 | }; |
| 761 | |
David Brownell | a4dbd67 | 2009-06-24 10:06:31 -0700 | [diff] [blame] | 762 | static const struct attribute_group *cciss_dev_attr_groups[] = { |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 763 | &cciss_dev_attr_group, |
| 764 | NULL |
| 765 | }; |
| 766 | |
| 767 | static struct device_type cciss_dev_type = { |
| 768 | .name = "cciss_device", |
| 769 | .groups = cciss_dev_attr_groups, |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 770 | .release = cciss_device_release, |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 771 | }; |
| 772 | |
| 773 | static struct bus_type cciss_bus_type = { |
| 774 | .name = "cciss", |
| 775 | }; |
| 776 | |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 777 | /* |
| 778 | * cciss_hba_release is called when the reference count |
| 779 | * of h->dev goes to zero. |
| 780 | */ |
| 781 | static void cciss_hba_release(struct device *dev) |
| 782 | { |
| 783 | /* |
| 784 | * nothing to do, but need this to avoid a warning |
| 785 | * about not having a release handler from lib/kref.c. |
| 786 | */ |
| 787 | } |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 788 | |
| 789 | /* |
| 790 | * Initialize sysfs entry for each controller. This sets up and registers |
| 791 | * the 'cciss#' directory for each individual controller under |
| 792 | * /sys/bus/pci/devices/<dev>/. |
| 793 | */ |
| 794 | static int cciss_create_hba_sysfs_entry(struct ctlr_info *h) |
| 795 | { |
| 796 | device_initialize(&h->dev); |
| 797 | h->dev.type = &cciss_host_type; |
| 798 | h->dev.bus = &cciss_bus_type; |
| 799 | dev_set_name(&h->dev, "%s", h->devname); |
| 800 | h->dev.parent = &h->pdev->dev; |
| 801 | |
| 802 | return device_add(&h->dev); |
| 803 | } |
| 804 | |
| 805 | /* |
| 806 | * Remove sysfs entries for an hba. |
| 807 | */ |
| 808 | static void cciss_destroy_hba_sysfs_entry(struct ctlr_info *h) |
| 809 | { |
| 810 | device_del(&h->dev); |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 811 | put_device(&h->dev); /* final put. */ |
| 812 | } |
| 813 | |
| 814 | /* cciss_device_release is called when the reference count |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 815 | * of h->drv[x]dev goes to zero. |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 816 | */ |
| 817 | static void cciss_device_release(struct device *dev) |
| 818 | { |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 819 | drive_info_struct *drv = to_drv(dev); |
| 820 | kfree(drv); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 821 | } |
| 822 | |
| 823 | /* |
| 824 | * Initialize sysfs for each logical drive. This sets up and registers |
| 825 | * the 'c#d#' directory for each individual logical drive under |
| 826 | * /sys/bus/pci/devices/<dev/ccis#/. We also create a link from |
| 827 | * /sys/block/cciss!c#d# to this entry. |
| 828 | */ |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 829 | static long cciss_create_ld_sysfs_entry(struct ctlr_info *h, |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 830 | int drv_index) |
| 831 | { |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 832 | struct device *dev; |
| 833 | |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 834 | if (h->drv[drv_index]->device_initialized) |
Stephen M. Cameron | 8ce5196 | 2009-09-17 13:47:34 -0500 | [diff] [blame] | 835 | return 0; |
| 836 | |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 837 | dev = &h->drv[drv_index]->dev; |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 838 | device_initialize(dev); |
| 839 | dev->type = &cciss_dev_type; |
| 840 | dev->bus = &cciss_bus_type; |
| 841 | dev_set_name(dev, "c%dd%d", h->ctlr, drv_index); |
| 842 | dev->parent = &h->dev; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 843 | h->drv[drv_index]->device_initialized = 1; |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 844 | return device_add(dev); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 845 | } |
| 846 | |
| 847 | /* |
| 848 | * Remove sysfs entries for a logical drive. |
| 849 | */ |
Stephen M. Cameron | 8ce5196 | 2009-09-17 13:47:34 -0500 | [diff] [blame] | 850 | static void cciss_destroy_ld_sysfs_entry(struct ctlr_info *h, int drv_index, |
| 851 | int ctlr_exiting) |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 852 | { |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 853 | struct device *dev = &h->drv[drv_index]->dev; |
Stephen M. Cameron | 8ce5196 | 2009-09-17 13:47:34 -0500 | [diff] [blame] | 854 | |
| 855 | /* special case for c*d0, we only destroy it on controller exit */ |
| 856 | if (drv_index == 0 && !ctlr_exiting) |
| 857 | return; |
| 858 | |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 859 | device_del(dev); |
| 860 | put_device(dev); /* the "final" put. */ |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 861 | h->drv[drv_index] = NULL; |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 862 | } |
| 863 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 864 | /* |
| 865 | * For operations that cannot sleep, a command block is allocated at init, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 866 | * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 867 | * which ones are free or in use. For operations that can wait for kmalloc |
| 868 | * to possible sleep, this routine can be called with get_from_pool set to 0. |
| 869 | * cmd_free() MUST be called with a got_from_pool set to 0 if cmd_alloc was. |
| 870 | */ |
| 871 | static CommandList_struct *cmd_alloc(ctlr_info_t *h, int get_from_pool) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 872 | { |
| 873 | CommandList_struct *c; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 874 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 875 | u64bit temp64; |
| 876 | dma_addr_t cmd_dma_handle, err_dma_handle; |
| 877 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 878 | if (!get_from_pool) { |
| 879 | c = (CommandList_struct *) pci_alloc_consistent(h->pdev, |
| 880 | sizeof(CommandList_struct), &cmd_dma_handle); |
| 881 | if (c == NULL) |
| 882 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 883 | memset(c, 0, sizeof(CommandList_struct)); |
| 884 | |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 885 | c->cmdindex = -1; |
| 886 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 887 | c->err_info = (ErrorInfo_struct *) |
| 888 | pci_alloc_consistent(h->pdev, sizeof(ErrorInfo_struct), |
| 889 | &err_dma_handle); |
| 890 | |
| 891 | if (c->err_info == NULL) { |
| 892 | pci_free_consistent(h->pdev, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 893 | sizeof(CommandList_struct), c, cmd_dma_handle); |
| 894 | return NULL; |
| 895 | } |
| 896 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 897 | } else { /* get it out of the controllers pool */ |
| 898 | |
| 899 | do { |
Mike Miller | f880632 | 2006-12-06 20:35:01 -0800 | [diff] [blame] | 900 | i = find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds); |
| 901 | if (i == h->nr_cmds) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 902 | return NULL; |
| 903 | } while (test_and_set_bit |
| 904 | (i & (BITS_PER_LONG - 1), |
| 905 | h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 906 | #ifdef CCISS_DEBUG |
| 907 | printk(KERN_DEBUG "cciss: using command buffer %d\n", i); |
| 908 | #endif |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 909 | c = h->cmd_pool + i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 910 | memset(c, 0, sizeof(CommandList_struct)); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 911 | cmd_dma_handle = h->cmd_pool_dhandle |
| 912 | + i * sizeof(CommandList_struct); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 913 | c->err_info = h->errinfo_pool + i; |
| 914 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 915 | err_dma_handle = h->errinfo_pool_dhandle |
| 916 | + i * sizeof(ErrorInfo_struct); |
| 917 | h->nr_allocs++; |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 918 | |
| 919 | c->cmdindex = i; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 920 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 921 | |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 922 | INIT_HLIST_NODE(&c->list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 923 | c->busaddr = (__u32) cmd_dma_handle; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 924 | temp64.val = (__u64) err_dma_handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 925 | c->ErrDesc.Addr.lower = temp64.val32.lower; |
| 926 | c->ErrDesc.Addr.upper = temp64.val32.upper; |
| 927 | c->ErrDesc.Len = sizeof(ErrorInfo_struct); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 928 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 929 | c->ctlr = h->ctlr; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 930 | return c; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 931 | } |
| 932 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 933 | /* |
| 934 | * Frees a command block that was previously allocated with cmd_alloc(). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 935 | */ |
| 936 | static void cmd_free(ctlr_info_t *h, CommandList_struct *c, int got_from_pool) |
| 937 | { |
| 938 | int i; |
| 939 | u64bit temp64; |
| 940 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 941 | if (!got_from_pool) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 942 | temp64.val32.lower = c->ErrDesc.Addr.lower; |
| 943 | temp64.val32.upper = c->ErrDesc.Addr.upper; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 944 | pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct), |
| 945 | c->err_info, (dma_addr_t) temp64.val); |
| 946 | pci_free_consistent(h->pdev, sizeof(CommandList_struct), |
| 947 | c, (dma_addr_t) c->busaddr); |
| 948 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 949 | i = c - h->cmd_pool; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 950 | clear_bit(i & (BITS_PER_LONG - 1), |
| 951 | h->cmd_pool_bits + (i / BITS_PER_LONG)); |
| 952 | h->nr_frees++; |
| 953 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 954 | } |
| 955 | |
| 956 | static inline ctlr_info_t *get_host(struct gendisk *disk) |
| 957 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 958 | return disk->queue->queuedata; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 959 | } |
| 960 | |
| 961 | static inline drive_info_struct *get_drv(struct gendisk *disk) |
| 962 | { |
| 963 | return disk->private_data; |
| 964 | } |
| 965 | |
| 966 | /* |
| 967 | * Open. Make sure the device is really there. |
| 968 | */ |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 969 | static int cciss_open(struct block_device *bdev, fmode_t mode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 970 | { |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 971 | ctlr_info_t *host = get_host(bdev->bd_disk); |
| 972 | drive_info_struct *drv = get_drv(bdev->bd_disk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 973 | |
| 974 | #ifdef CCISS_DEBUG |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 975 | printk(KERN_DEBUG "cciss_open %s\n", bdev->bd_disk->disk_name); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 976 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 977 | |
Stephen M. Cameron | 2e04398 | 2009-09-17 13:48:05 -0500 | [diff] [blame] | 978 | if (drv->busy_configuring) |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 979 | return -EBUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 980 | /* |
| 981 | * Root is allowed to open raw volume zero even if it's not configured |
| 982 | * so array config can still work. Root is also allowed to open any |
| 983 | * volume that has a LUN ID, so it can issue IOCTL to reread the |
| 984 | * disk information. I don't think I really like this |
| 985 | * but I'm already using way to many device nodes to claim another one |
| 986 | * for "raw controller". |
| 987 | */ |
Mike Miller | 7a06f78 | 2006-12-06 20:35:08 -0800 | [diff] [blame] | 988 | if (drv->heads == 0) { |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 989 | if (MINOR(bdev->bd_dev) != 0) { /* not node 0? */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 990 | /* if not node 0 make sure it is a partition = 0 */ |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 991 | if (MINOR(bdev->bd_dev) & 0x0f) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 992 | return -ENXIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 993 | /* if it is, make sure we have a LUN ID */ |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 994 | } else if (memcmp(drv->LunID, CTLR_LUNID, |
| 995 | sizeof(drv->LunID))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 996 | return -ENXIO; |
| 997 | } |
| 998 | } |
| 999 | if (!capable(CAP_SYS_ADMIN)) |
| 1000 | return -EPERM; |
| 1001 | } |
| 1002 | drv->usage_count++; |
| 1003 | host->usage_count++; |
| 1004 | return 0; |
| 1005 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1006 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1007 | /* |
| 1008 | * Close. Sync first. |
| 1009 | */ |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1010 | static int cciss_release(struct gendisk *disk, fmode_t mode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1011 | { |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1012 | ctlr_info_t *host = get_host(disk); |
| 1013 | drive_info_struct *drv = get_drv(disk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1014 | |
| 1015 | #ifdef CCISS_DEBUG |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1016 | printk(KERN_DEBUG "cciss_release %s\n", disk->disk_name); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1017 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1018 | |
| 1019 | drv->usage_count--; |
| 1020 | host->usage_count--; |
| 1021 | return 0; |
| 1022 | } |
| 1023 | |
| 1024 | #ifdef CONFIG_COMPAT |
| 1025 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1026 | static int do_ioctl(struct block_device *bdev, fmode_t mode, |
| 1027 | unsigned cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1028 | { |
| 1029 | int ret; |
| 1030 | lock_kernel(); |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1031 | ret = cciss_ioctl(bdev, mode, cmd, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1032 | unlock_kernel(); |
| 1033 | return ret; |
| 1034 | } |
| 1035 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1036 | static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode, |
| 1037 | unsigned cmd, unsigned long arg); |
| 1038 | static int cciss_ioctl32_big_passthru(struct block_device *bdev, fmode_t mode, |
| 1039 | unsigned cmd, unsigned long arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1040 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1041 | static int cciss_compat_ioctl(struct block_device *bdev, fmode_t mode, |
| 1042 | unsigned cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1043 | { |
| 1044 | switch (cmd) { |
| 1045 | case CCISS_GETPCIINFO: |
| 1046 | case CCISS_GETINTINFO: |
| 1047 | case CCISS_SETINTINFO: |
| 1048 | case CCISS_GETNODENAME: |
| 1049 | case CCISS_SETNODENAME: |
| 1050 | case CCISS_GETHEARTBEAT: |
| 1051 | case CCISS_GETBUSTYPES: |
| 1052 | case CCISS_GETFIRMVER: |
| 1053 | case CCISS_GETDRIVVER: |
| 1054 | case CCISS_REVALIDVOLS: |
| 1055 | case CCISS_DEREGDISK: |
| 1056 | case CCISS_REGNEWDISK: |
| 1057 | case CCISS_REGNEWD: |
| 1058 | case CCISS_RESCANDISK: |
| 1059 | case CCISS_GETLUNINFO: |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1060 | return do_ioctl(bdev, mode, cmd, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1061 | |
| 1062 | case CCISS_PASSTHRU32: |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1063 | return cciss_ioctl32_passthru(bdev, mode, cmd, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1064 | case CCISS_BIG_PASSTHRU32: |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1065 | return cciss_ioctl32_big_passthru(bdev, mode, cmd, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1066 | |
| 1067 | default: |
| 1068 | return -ENOIOCTLCMD; |
| 1069 | } |
| 1070 | } |
| 1071 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1072 | static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode, |
| 1073 | unsigned cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1074 | { |
| 1075 | IOCTL32_Command_struct __user *arg32 = |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1076 | (IOCTL32_Command_struct __user *) arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1077 | IOCTL_Command_struct arg64; |
| 1078 | IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64)); |
| 1079 | int err; |
| 1080 | u32 cp; |
| 1081 | |
| 1082 | err = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1083 | err |= |
| 1084 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, |
| 1085 | sizeof(arg64.LUN_info)); |
| 1086 | err |= |
| 1087 | copy_from_user(&arg64.Request, &arg32->Request, |
| 1088 | sizeof(arg64.Request)); |
| 1089 | err |= |
| 1090 | copy_from_user(&arg64.error_info, &arg32->error_info, |
| 1091 | sizeof(arg64.error_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1092 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
| 1093 | err |= get_user(cp, &arg32->buf); |
| 1094 | arg64.buf = compat_ptr(cp); |
| 1095 | err |= copy_to_user(p, &arg64, sizeof(arg64)); |
| 1096 | |
| 1097 | if (err) |
| 1098 | return -EFAULT; |
| 1099 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1100 | err = do_ioctl(bdev, mode, CCISS_PASSTHRU, (unsigned long)p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1101 | if (err) |
| 1102 | return err; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1103 | err |= |
| 1104 | copy_in_user(&arg32->error_info, &p->error_info, |
| 1105 | sizeof(arg32->error_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1106 | if (err) |
| 1107 | return -EFAULT; |
| 1108 | return err; |
| 1109 | } |
| 1110 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1111 | static int cciss_ioctl32_big_passthru(struct block_device *bdev, fmode_t mode, |
| 1112 | unsigned cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1113 | { |
| 1114 | BIG_IOCTL32_Command_struct __user *arg32 = |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1115 | (BIG_IOCTL32_Command_struct __user *) arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1116 | BIG_IOCTL_Command_struct arg64; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1117 | BIG_IOCTL_Command_struct __user *p = |
| 1118 | compat_alloc_user_space(sizeof(arg64)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1119 | int err; |
| 1120 | u32 cp; |
| 1121 | |
| 1122 | err = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1123 | err |= |
| 1124 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, |
| 1125 | sizeof(arg64.LUN_info)); |
| 1126 | err |= |
| 1127 | copy_from_user(&arg64.Request, &arg32->Request, |
| 1128 | sizeof(arg64.Request)); |
| 1129 | err |= |
| 1130 | copy_from_user(&arg64.error_info, &arg32->error_info, |
| 1131 | sizeof(arg64.error_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1132 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
| 1133 | err |= get_user(arg64.malloc_size, &arg32->malloc_size); |
| 1134 | err |= get_user(cp, &arg32->buf); |
| 1135 | arg64.buf = compat_ptr(cp); |
| 1136 | err |= copy_to_user(p, &arg64, sizeof(arg64)); |
| 1137 | |
| 1138 | if (err) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1139 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1140 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1141 | err = do_ioctl(bdev, mode, CCISS_BIG_PASSTHRU, (unsigned long)p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1142 | if (err) |
| 1143 | return err; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1144 | err |= |
| 1145 | copy_in_user(&arg32->error_info, &p->error_info, |
| 1146 | sizeof(arg32->error_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1147 | if (err) |
| 1148 | return -EFAULT; |
| 1149 | return err; |
| 1150 | } |
| 1151 | #endif |
Christoph Hellwig | a885c8c | 2006-01-08 01:02:50 -0800 | [diff] [blame] | 1152 | |
| 1153 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo) |
| 1154 | { |
| 1155 | drive_info_struct *drv = get_drv(bdev->bd_disk); |
| 1156 | |
| 1157 | if (!drv->cylinders) |
| 1158 | return -ENXIO; |
| 1159 | |
| 1160 | geo->heads = drv->heads; |
| 1161 | geo->sectors = drv->sectors; |
| 1162 | geo->cylinders = drv->cylinders; |
| 1163 | return 0; |
| 1164 | } |
| 1165 | |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 1166 | static void check_ioctl_unit_attention(ctlr_info_t *host, CommandList_struct *c) |
| 1167 | { |
| 1168 | if (c->err_info->CommandStatus == CMD_TARGET_STATUS && |
| 1169 | c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) |
| 1170 | (void)check_for_unit_attention(host, c); |
| 1171 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1172 | /* |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1173 | * ioctl |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1174 | */ |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1175 | static int cciss_ioctl(struct block_device *bdev, fmode_t mode, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1176 | unsigned int cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1177 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1178 | struct gendisk *disk = bdev->bd_disk; |
| 1179 | ctlr_info_t *host = get_host(disk); |
| 1180 | drive_info_struct *drv = get_drv(disk); |
| 1181 | int ctlr = host->ctlr; |
| 1182 | void __user *argp = (void __user *)arg; |
| 1183 | |
| 1184 | #ifdef CCISS_DEBUG |
| 1185 | printk(KERN_DEBUG "cciss_ioctl: Called with cmd=%x %lx\n", cmd, arg); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1186 | #endif /* CCISS_DEBUG */ |
| 1187 | |
| 1188 | switch (cmd) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1189 | case CCISS_GETPCIINFO: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1190 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1191 | cciss_pci_info_struct pciinfo; |
| 1192 | |
| 1193 | if (!arg) |
| 1194 | return -EINVAL; |
| 1195 | pciinfo.domain = pci_domain_nr(host->pdev->bus); |
| 1196 | pciinfo.bus = host->pdev->bus->number; |
| 1197 | pciinfo.dev_fn = host->pdev->devfn; |
| 1198 | pciinfo.board_id = host->board_id; |
| 1199 | if (copy_to_user |
| 1200 | (argp, &pciinfo, sizeof(cciss_pci_info_struct))) |
| 1201 | return -EFAULT; |
| 1202 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1203 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1204 | case CCISS_GETINTINFO: |
| 1205 | { |
| 1206 | cciss_coalint_struct intinfo; |
| 1207 | if (!arg) |
| 1208 | return -EINVAL; |
| 1209 | intinfo.delay = |
| 1210 | readl(&host->cfgtable->HostWrite.CoalIntDelay); |
| 1211 | intinfo.count = |
| 1212 | readl(&host->cfgtable->HostWrite.CoalIntCount); |
| 1213 | if (copy_to_user |
| 1214 | (argp, &intinfo, sizeof(cciss_coalint_struct))) |
| 1215 | return -EFAULT; |
| 1216 | return 0; |
| 1217 | } |
| 1218 | case CCISS_SETINTINFO: |
| 1219 | { |
| 1220 | cciss_coalint_struct intinfo; |
| 1221 | unsigned long flags; |
| 1222 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1223 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1224 | if (!arg) |
| 1225 | return -EINVAL; |
| 1226 | if (!capable(CAP_SYS_ADMIN)) |
| 1227 | return -EPERM; |
| 1228 | if (copy_from_user |
| 1229 | (&intinfo, argp, sizeof(cciss_coalint_struct))) |
| 1230 | return -EFAULT; |
| 1231 | if ((intinfo.delay == 0) && (intinfo.count == 0)) |
| 1232 | { |
| 1233 | // printk("cciss_ioctl: delay and count cannot be 0\n"); |
| 1234 | return -EINVAL; |
| 1235 | } |
| 1236 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); |
| 1237 | /* Update the field, and then ring the doorbell */ |
| 1238 | writel(intinfo.delay, |
| 1239 | &(host->cfgtable->HostWrite.CoalIntDelay)); |
| 1240 | writel(intinfo.count, |
| 1241 | &(host->cfgtable->HostWrite.CoalIntCount)); |
| 1242 | writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); |
| 1243 | |
| 1244 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { |
| 1245 | if (!(readl(host->vaddr + SA5_DOORBELL) |
| 1246 | & CFGTBL_ChangeReq)) |
| 1247 | break; |
| 1248 | /* delay and try again */ |
| 1249 | udelay(1000); |
| 1250 | } |
| 1251 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
| 1252 | if (i >= MAX_IOCTL_CONFIG_WAIT) |
| 1253 | return -EAGAIN; |
| 1254 | return 0; |
| 1255 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1256 | case CCISS_GETNODENAME: |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1257 | { |
| 1258 | NodeName_type NodeName; |
| 1259 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1260 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1261 | if (!arg) |
| 1262 | return -EINVAL; |
| 1263 | for (i = 0; i < 16; i++) |
| 1264 | NodeName[i] = |
| 1265 | readb(&host->cfgtable->ServerName[i]); |
| 1266 | if (copy_to_user(argp, NodeName, sizeof(NodeName_type))) |
| 1267 | return -EFAULT; |
| 1268 | return 0; |
| 1269 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1270 | case CCISS_SETNODENAME: |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1271 | { |
| 1272 | NodeName_type NodeName; |
| 1273 | unsigned long flags; |
| 1274 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1275 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1276 | if (!arg) |
| 1277 | return -EINVAL; |
| 1278 | if (!capable(CAP_SYS_ADMIN)) |
| 1279 | return -EPERM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1280 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1281 | if (copy_from_user |
| 1282 | (NodeName, argp, sizeof(NodeName_type))) |
| 1283 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1284 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1285 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1286 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1287 | /* Update the field, and then ring the doorbell */ |
| 1288 | for (i = 0; i < 16; i++) |
| 1289 | writeb(NodeName[i], |
| 1290 | &host->cfgtable->ServerName[i]); |
| 1291 | |
| 1292 | writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); |
| 1293 | |
| 1294 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { |
| 1295 | if (!(readl(host->vaddr + SA5_DOORBELL) |
| 1296 | & CFGTBL_ChangeReq)) |
| 1297 | break; |
| 1298 | /* delay and try again */ |
| 1299 | udelay(1000); |
| 1300 | } |
| 1301 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
| 1302 | if (i >= MAX_IOCTL_CONFIG_WAIT) |
| 1303 | return -EAGAIN; |
| 1304 | return 0; |
| 1305 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1306 | |
| 1307 | case CCISS_GETHEARTBEAT: |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1308 | { |
| 1309 | Heartbeat_type heartbeat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1310 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1311 | if (!arg) |
| 1312 | return -EINVAL; |
| 1313 | heartbeat = readl(&host->cfgtable->HeartBeat); |
| 1314 | if (copy_to_user |
| 1315 | (argp, &heartbeat, sizeof(Heartbeat_type))) |
| 1316 | return -EFAULT; |
| 1317 | return 0; |
| 1318 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1319 | case CCISS_GETBUSTYPES: |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1320 | { |
| 1321 | BusTypes_type BusTypes; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1322 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1323 | if (!arg) |
| 1324 | return -EINVAL; |
| 1325 | BusTypes = readl(&host->cfgtable->BusTypes); |
| 1326 | if (copy_to_user |
| 1327 | (argp, &BusTypes, sizeof(BusTypes_type))) |
| 1328 | return -EFAULT; |
| 1329 | return 0; |
| 1330 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1331 | case CCISS_GETFIRMVER: |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1332 | { |
| 1333 | FirmwareVer_type firmware; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1334 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1335 | if (!arg) |
| 1336 | return -EINVAL; |
| 1337 | memcpy(firmware, host->firm_ver, 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1338 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1339 | if (copy_to_user |
| 1340 | (argp, firmware, sizeof(FirmwareVer_type))) |
| 1341 | return -EFAULT; |
| 1342 | return 0; |
| 1343 | } |
| 1344 | case CCISS_GETDRIVVER: |
| 1345 | { |
| 1346 | DriverVer_type DriverVer = DRIVER_VERSION; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1347 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1348 | if (!arg) |
| 1349 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1350 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1351 | if (copy_to_user |
| 1352 | (argp, &DriverVer, sizeof(DriverVer_type))) |
| 1353 | return -EFAULT; |
| 1354 | return 0; |
| 1355 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1356 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1357 | case CCISS_DEREGDISK: |
| 1358 | case CCISS_REGNEWD: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1359 | case CCISS_REVALIDVOLS: |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 1360 | return rebuild_lun_table(host, 0, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1361 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1362 | case CCISS_GETLUNINFO:{ |
| 1363 | LogvolInfo_struct luninfo; |
| 1364 | |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 1365 | memcpy(&luninfo.LunID, drv->LunID, |
| 1366 | sizeof(luninfo.LunID)); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1367 | luninfo.num_opens = drv->usage_count; |
| 1368 | luninfo.num_parts = 0; |
| 1369 | if (copy_to_user(argp, &luninfo, |
| 1370 | sizeof(LogvolInfo_struct))) |
| 1371 | return -EFAULT; |
| 1372 | return 0; |
| 1373 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1374 | case CCISS_PASSTHRU: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1375 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1376 | IOCTL_Command_struct iocommand; |
| 1377 | CommandList_struct *c; |
| 1378 | char *buff = NULL; |
| 1379 | u64bit temp64; |
| 1380 | unsigned long flags; |
Peter Zijlstra | 6e9a473 | 2006-09-30 23:28:10 -0700 | [diff] [blame] | 1381 | DECLARE_COMPLETION_ONSTACK(wait); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1382 | |
| 1383 | if (!arg) |
| 1384 | return -EINVAL; |
| 1385 | |
| 1386 | if (!capable(CAP_SYS_RAWIO)) |
| 1387 | return -EPERM; |
| 1388 | |
| 1389 | if (copy_from_user |
| 1390 | (&iocommand, argp, sizeof(IOCTL_Command_struct))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1391 | return -EFAULT; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1392 | if ((iocommand.buf_size < 1) && |
| 1393 | (iocommand.Request.Type.Direction != XFER_NONE)) { |
| 1394 | return -EINVAL; |
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 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */ |
| 1397 | /* Check kmalloc limits */ |
| 1398 | if (iocommand.buf_size > 128000) |
| 1399 | return -EINVAL; |
| 1400 | #endif |
| 1401 | if (iocommand.buf_size > 0) { |
| 1402 | buff = kmalloc(iocommand.buf_size, GFP_KERNEL); |
| 1403 | if (buff == NULL) |
| 1404 | return -EFAULT; |
| 1405 | } |
| 1406 | if (iocommand.Request.Type.Direction == XFER_WRITE) { |
| 1407 | /* Copy the data into the buffer we created */ |
| 1408 | if (copy_from_user |
| 1409 | (buff, iocommand.buf, iocommand.buf_size)) { |
| 1410 | kfree(buff); |
| 1411 | return -EFAULT; |
| 1412 | } |
| 1413 | } else { |
| 1414 | memset(buff, 0, iocommand.buf_size); |
| 1415 | } |
| 1416 | if ((c = cmd_alloc(host, 0)) == NULL) { |
| 1417 | kfree(buff); |
| 1418 | return -ENOMEM; |
| 1419 | } |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 1420 | /* Fill in the command type */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1421 | c->cmd_type = CMD_IOCTL_PEND; |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 1422 | /* Fill in Command Header */ |
| 1423 | c->Header.ReplyQueue = 0; /* unused in simple mode */ |
| 1424 | if (iocommand.buf_size > 0) /* buffer to fill */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1425 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1426 | c->Header.SGList = 1; |
| 1427 | c->Header.SGTotal = 1; |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 1428 | } else /* no buffers to fill */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1429 | { |
| 1430 | c->Header.SGList = 0; |
| 1431 | c->Header.SGTotal = 0; |
| 1432 | } |
| 1433 | c->Header.LUN = iocommand.LUN_info; |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 1434 | /* use the kernel address the cmd block for tag */ |
| 1435 | c->Header.Tag.lower = c->busaddr; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1436 | |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 1437 | /* Fill in Request block */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1438 | c->Request = iocommand.Request; |
| 1439 | |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 1440 | /* Fill in the scatter gather information */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1441 | if (iocommand.buf_size > 0) { |
| 1442 | temp64.val = pci_map_single(host->pdev, buff, |
| 1443 | iocommand.buf_size, |
| 1444 | PCI_DMA_BIDIRECTIONAL); |
| 1445 | c->SG[0].Addr.lower = temp64.val32.lower; |
| 1446 | c->SG[0].Addr.upper = temp64.val32.upper; |
| 1447 | c->SG[0].Len = iocommand.buf_size; |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 1448 | c->SG[0].Ext = 0; /* we are not chaining */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1449 | } |
| 1450 | c->waiting = &wait; |
| 1451 | |
| 1452 | /* Put the request on the tail of the request queue */ |
| 1453 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); |
| 1454 | addQ(&host->reqQ, c); |
| 1455 | host->Qdepth++; |
| 1456 | start_io(host); |
| 1457 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
| 1458 | |
| 1459 | wait_for_completion(&wait); |
| 1460 | |
| 1461 | /* unlock the buffers from DMA */ |
| 1462 | temp64.val32.lower = c->SG[0].Addr.lower; |
| 1463 | temp64.val32.upper = c->SG[0].Addr.upper; |
| 1464 | pci_unmap_single(host->pdev, (dma_addr_t) temp64.val, |
| 1465 | iocommand.buf_size, |
| 1466 | PCI_DMA_BIDIRECTIONAL); |
| 1467 | |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 1468 | check_ioctl_unit_attention(host, c); |
| 1469 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1470 | /* Copy the error information out */ |
| 1471 | iocommand.error_info = *(c->err_info); |
| 1472 | if (copy_to_user |
| 1473 | (argp, &iocommand, sizeof(IOCTL_Command_struct))) { |
| 1474 | kfree(buff); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1475 | cmd_free(host, c, 0); |
| 1476 | return -EFAULT; |
| 1477 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1478 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1479 | if (iocommand.Request.Type.Direction == XFER_READ) { |
| 1480 | /* Copy the data out of the buffer we created */ |
| 1481 | if (copy_to_user |
| 1482 | (iocommand.buf, buff, iocommand.buf_size)) { |
| 1483 | kfree(buff); |
| 1484 | cmd_free(host, c, 0); |
| 1485 | return -EFAULT; |
| 1486 | } |
| 1487 | } |
| 1488 | kfree(buff); |
| 1489 | cmd_free(host, c, 0); |
| 1490 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1491 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1492 | case CCISS_BIG_PASSTHRU:{ |
| 1493 | BIG_IOCTL_Command_struct *ioc; |
| 1494 | CommandList_struct *c; |
| 1495 | unsigned char **buff = NULL; |
| 1496 | int *buff_size = NULL; |
| 1497 | u64bit temp64; |
| 1498 | unsigned long flags; |
| 1499 | BYTE sg_used = 0; |
| 1500 | int status = 0; |
| 1501 | int i; |
Peter Zijlstra | 6e9a473 | 2006-09-30 23:28:10 -0700 | [diff] [blame] | 1502 | DECLARE_COMPLETION_ONSTACK(wait); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1503 | __u32 left; |
| 1504 | __u32 sz; |
| 1505 | BYTE __user *data_ptr; |
| 1506 | |
| 1507 | if (!arg) |
| 1508 | return -EINVAL; |
| 1509 | if (!capable(CAP_SYS_RAWIO)) |
| 1510 | return -EPERM; |
| 1511 | ioc = (BIG_IOCTL_Command_struct *) |
| 1512 | kmalloc(sizeof(*ioc), GFP_KERNEL); |
| 1513 | if (!ioc) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1514 | status = -ENOMEM; |
| 1515 | goto cleanup1; |
| 1516 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1517 | if (copy_from_user(ioc, argp, sizeof(*ioc))) { |
| 1518 | status = -EFAULT; |
| 1519 | goto cleanup1; |
| 1520 | } |
| 1521 | if ((ioc->buf_size < 1) && |
| 1522 | (ioc->Request.Type.Direction != XFER_NONE)) { |
| 1523 | status = -EINVAL; |
| 1524 | goto cleanup1; |
| 1525 | } |
| 1526 | /* Check kmalloc limits using all SGs */ |
| 1527 | if (ioc->malloc_size > MAX_KMALLOC_SIZE) { |
| 1528 | status = -EINVAL; |
| 1529 | goto cleanup1; |
| 1530 | } |
| 1531 | if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) { |
| 1532 | status = -EINVAL; |
| 1533 | goto cleanup1; |
| 1534 | } |
| 1535 | buff = |
| 1536 | kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL); |
| 1537 | if (!buff) { |
| 1538 | status = -ENOMEM; |
| 1539 | goto cleanup1; |
| 1540 | } |
Robert P. J. Day | 5cbded5 | 2006-12-13 00:35:56 -0800 | [diff] [blame] | 1541 | buff_size = kmalloc(MAXSGENTRIES * sizeof(int), |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1542 | GFP_KERNEL); |
| 1543 | if (!buff_size) { |
| 1544 | status = -ENOMEM; |
| 1545 | goto cleanup1; |
| 1546 | } |
| 1547 | left = ioc->buf_size; |
| 1548 | data_ptr = ioc->buf; |
| 1549 | while (left) { |
| 1550 | sz = (left > |
| 1551 | ioc->malloc_size) ? ioc-> |
| 1552 | malloc_size : left; |
| 1553 | buff_size[sg_used] = sz; |
| 1554 | buff[sg_used] = kmalloc(sz, GFP_KERNEL); |
| 1555 | if (buff[sg_used] == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1556 | status = -ENOMEM; |
Jens Axboe | 15534d3 | 2005-11-18 22:02:44 +0100 | [diff] [blame] | 1557 | goto cleanup1; |
| 1558 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1559 | if (ioc->Request.Type.Direction == XFER_WRITE) { |
| 1560 | if (copy_from_user |
| 1561 | (buff[sg_used], data_ptr, sz)) { |
Nikanth Karthikesan | f7108f9 | 2008-08-04 10:56:07 +0200 | [diff] [blame] | 1562 | status = -EFAULT; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1563 | goto cleanup1; |
| 1564 | } |
| 1565 | } else { |
| 1566 | memset(buff[sg_used], 0, sz); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1567 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1568 | left -= sz; |
| 1569 | data_ptr += sz; |
| 1570 | sg_used++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1571 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1572 | if ((c = cmd_alloc(host, 0)) == NULL) { |
| 1573 | status = -ENOMEM; |
| 1574 | goto cleanup1; |
| 1575 | } |
| 1576 | c->cmd_type = CMD_IOCTL_PEND; |
| 1577 | c->Header.ReplyQueue = 0; |
| 1578 | |
| 1579 | if (ioc->buf_size > 0) { |
| 1580 | c->Header.SGList = sg_used; |
| 1581 | c->Header.SGTotal = sg_used; |
| 1582 | } else { |
| 1583 | c->Header.SGList = 0; |
| 1584 | c->Header.SGTotal = 0; |
| 1585 | } |
| 1586 | c->Header.LUN = ioc->LUN_info; |
| 1587 | c->Header.Tag.lower = c->busaddr; |
| 1588 | |
| 1589 | c->Request = ioc->Request; |
| 1590 | if (ioc->buf_size > 0) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1591 | for (i = 0; i < sg_used; i++) { |
| 1592 | temp64.val = |
| 1593 | pci_map_single(host->pdev, buff[i], |
| 1594 | buff_size[i], |
| 1595 | PCI_DMA_BIDIRECTIONAL); |
| 1596 | c->SG[i].Addr.lower = |
| 1597 | temp64.val32.lower; |
| 1598 | c->SG[i].Addr.upper = |
| 1599 | temp64.val32.upper; |
| 1600 | c->SG[i].Len = buff_size[i]; |
| 1601 | c->SG[i].Ext = 0; /* we are not chaining */ |
| 1602 | } |
| 1603 | } |
| 1604 | c->waiting = &wait; |
| 1605 | /* Put the request on the tail of the request queue */ |
| 1606 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); |
| 1607 | addQ(&host->reqQ, c); |
| 1608 | host->Qdepth++; |
| 1609 | start_io(host); |
| 1610 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
| 1611 | wait_for_completion(&wait); |
| 1612 | /* unlock the buffers from DMA */ |
| 1613 | for (i = 0; i < sg_used; i++) { |
| 1614 | temp64.val32.lower = c->SG[i].Addr.lower; |
| 1615 | temp64.val32.upper = c->SG[i].Addr.upper; |
| 1616 | pci_unmap_single(host->pdev, |
| 1617 | (dma_addr_t) temp64.val, buff_size[i], |
| 1618 | PCI_DMA_BIDIRECTIONAL); |
| 1619 | } |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 1620 | check_ioctl_unit_attention(host, c); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1621 | /* Copy the error information out */ |
| 1622 | ioc->error_info = *(c->err_info); |
| 1623 | if (copy_to_user(argp, ioc, sizeof(*ioc))) { |
| 1624 | cmd_free(host, c, 0); |
| 1625 | status = -EFAULT; |
| 1626 | goto cleanup1; |
| 1627 | } |
| 1628 | if (ioc->Request.Type.Direction == XFER_READ) { |
| 1629 | /* Copy the data out of the buffer we created */ |
| 1630 | BYTE __user *ptr = ioc->buf; |
| 1631 | for (i = 0; i < sg_used; i++) { |
| 1632 | if (copy_to_user |
| 1633 | (ptr, buff[i], buff_size[i])) { |
| 1634 | cmd_free(host, c, 0); |
| 1635 | status = -EFAULT; |
| 1636 | goto cleanup1; |
| 1637 | } |
| 1638 | ptr += buff_size[i]; |
| 1639 | } |
| 1640 | } |
| 1641 | cmd_free(host, c, 0); |
| 1642 | status = 0; |
| 1643 | cleanup1: |
| 1644 | if (buff) { |
| 1645 | for (i = 0; i < sg_used; i++) |
| 1646 | kfree(buff[i]); |
| 1647 | kfree(buff); |
| 1648 | } |
| 1649 | kfree(buff_size); |
| 1650 | kfree(ioc); |
| 1651 | return status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1652 | } |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 1653 | |
| 1654 | /* scsi_cmd_ioctl handles these, below, though some are not */ |
| 1655 | /* very meaningful for cciss. SG_IO is the main one people want. */ |
| 1656 | |
| 1657 | case SG_GET_VERSION_NUM: |
| 1658 | case SG_SET_TIMEOUT: |
| 1659 | case SG_GET_TIMEOUT: |
| 1660 | case SG_GET_RESERVED_SIZE: |
| 1661 | case SG_SET_RESERVED_SIZE: |
| 1662 | case SG_EMULATED_HOST: |
| 1663 | case SG_IO: |
| 1664 | case SCSI_IOCTL_SEND_COMMAND: |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1665 | return scsi_cmd_ioctl(disk->queue, disk, mode, cmd, argp); |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 1666 | |
| 1667 | /* scsi_cmd_ioctl would normally handle these, below, but */ |
| 1668 | /* they aren't a good fit for cciss, as CD-ROMs are */ |
| 1669 | /* not supported, and we don't have any bus/target/lun */ |
| 1670 | /* which we present to the kernel. */ |
| 1671 | |
| 1672 | case CDROM_SEND_PACKET: |
| 1673 | case CDROMCLOSETRAY: |
| 1674 | case CDROMEJECT: |
| 1675 | case SCSI_IOCTL_GET_IDLUN: |
| 1676 | case SCSI_IOCTL_GET_BUS_NUMBER: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1677 | default: |
| 1678 | return -ENOTTY; |
| 1679 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1680 | } |
| 1681 | |
Jens Axboe | 7b30f09 | 2006-07-25 15:02:48 +0200 | [diff] [blame] | 1682 | static void cciss_check_queues(ctlr_info_t *h) |
| 1683 | { |
| 1684 | int start_queue = h->next_to_run; |
| 1685 | int i; |
| 1686 | |
| 1687 | /* check to see if we have maxed out the number of commands that can |
| 1688 | * be placed on the queue. If so then exit. We do this check here |
| 1689 | * in case the interrupt we serviced was from an ioctl and did not |
| 1690 | * free any new commands. |
| 1691 | */ |
Mike Miller | f880632 | 2006-12-06 20:35:01 -0800 | [diff] [blame] | 1692 | 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] | 1693 | return; |
| 1694 | |
| 1695 | /* We have room on the queue for more commands. Now we need to queue |
| 1696 | * them up. We will also keep track of the next queue to run so |
| 1697 | * that every queue gets a chance to be started first. |
| 1698 | */ |
| 1699 | for (i = 0; i < h->highest_lun + 1; i++) { |
| 1700 | int curr_queue = (start_queue + i) % (h->highest_lun + 1); |
| 1701 | /* make sure the disk has been added and the drive is real |
| 1702 | * because this can be called from the middle of init_one. |
| 1703 | */ |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1704 | if (!h->drv[curr_queue]) |
| 1705 | continue; |
| 1706 | if (!(h->drv[curr_queue]->queue) || |
| 1707 | !(h->drv[curr_queue]->heads)) |
Jens Axboe | 7b30f09 | 2006-07-25 15:02:48 +0200 | [diff] [blame] | 1708 | continue; |
| 1709 | blk_start_queue(h->gendisk[curr_queue]->queue); |
| 1710 | |
| 1711 | /* check to see if we have maxed out the number of commands |
| 1712 | * that can be placed on the queue. |
| 1713 | */ |
Mike Miller | f880632 | 2006-12-06 20:35:01 -0800 | [diff] [blame] | 1714 | 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] | 1715 | if (curr_queue == start_queue) { |
| 1716 | h->next_to_run = |
| 1717 | (start_queue + 1) % (h->highest_lun + 1); |
| 1718 | break; |
| 1719 | } else { |
| 1720 | h->next_to_run = curr_queue; |
| 1721 | break; |
| 1722 | } |
Jens Axboe | 7b30f09 | 2006-07-25 15:02:48 +0200 | [diff] [blame] | 1723 | } |
| 1724 | } |
| 1725 | } |
| 1726 | |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1727 | static void cciss_softirq_done(struct request *rq) |
| 1728 | { |
| 1729 | CommandList_struct *cmd = rq->completion_data; |
| 1730 | ctlr_info_t *h = hba[cmd->ctlr]; |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 1731 | SGDescriptor_struct *curr_sg = cmd->SG; |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1732 | unsigned long flags; |
| 1733 | u64bit temp64; |
| 1734 | int i, ddir; |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 1735 | int sg_index = 0; |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1736 | |
| 1737 | if (cmd->Request.Type.Direction == XFER_READ) |
| 1738 | ddir = PCI_DMA_FROMDEVICE; |
| 1739 | else |
| 1740 | ddir = PCI_DMA_TODEVICE; |
| 1741 | |
| 1742 | /* command did not need to be retried */ |
| 1743 | /* unmap the DMA mapping for all the scatter gather elements */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1744 | for (i = 0; i < cmd->Header.SGList; i++) { |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 1745 | if (curr_sg[sg_index].Ext == CCISS_SG_CHAIN) { |
Stephen M. Cameron | d45033e | 2010-02-26 16:01:37 -0600 | [diff] [blame] | 1746 | cciss_unmap_sg_chain_block(h, cmd); |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 1747 | /* Point to the next block */ |
Stephen M. Cameron | dccc9b5 | 2010-02-26 16:01:27 -0600 | [diff] [blame] | 1748 | curr_sg = h->cmd_sg_list[cmd->cmdindex]; |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 1749 | sg_index = 0; |
| 1750 | } |
| 1751 | temp64.val32.lower = curr_sg[sg_index].Addr.lower; |
| 1752 | temp64.val32.upper = curr_sg[sg_index].Addr.upper; |
| 1753 | pci_unmap_page(h->pdev, temp64.val, curr_sg[sg_index].Len, |
| 1754 | ddir); |
| 1755 | ++sg_index; |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1756 | } |
| 1757 | |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1758 | #ifdef CCISS_DEBUG |
| 1759 | printk("Done with %p\n", rq); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1760 | #endif /* CCISS_DEBUG */ |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1761 | |
Tejun Heo | c3a4d78 | 2009-05-07 22:24:37 +0900 | [diff] [blame] | 1762 | /* set the residual count for pc requests */ |
Jens Axboe | ac44e5b | 2009-03-27 10:43:52 +0100 | [diff] [blame] | 1763 | if (blk_pc_request(rq)) |
Tejun Heo | c3a4d78 | 2009-05-07 22:24:37 +0900 | [diff] [blame] | 1764 | rq->resid_len = cmd->err_info->ResidualCnt; |
Jens Axboe | ac44e5b | 2009-03-27 10:43:52 +0100 | [diff] [blame] | 1765 | |
Tejun Heo | c3a4d78 | 2009-05-07 22:24:37 +0900 | [diff] [blame] | 1766 | blk_end_request_all(rq, (rq->errors == 0) ? 0 : -EIO); |
Kiyoshi Ueda | 3daeea2 | 2007-12-11 17:50:03 -0500 | [diff] [blame] | 1767 | |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1768 | spin_lock_irqsave(&h->lock, flags); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1769 | cmd_free(h, cmd, 1); |
Jens Axboe | 7b30f09 | 2006-07-25 15:02:48 +0200 | [diff] [blame] | 1770 | cciss_check_queues(h); |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1771 | spin_unlock_irqrestore(&h->lock, flags); |
| 1772 | } |
| 1773 | |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 1774 | static inline void log_unit_to_scsi3addr(ctlr_info_t *h, |
| 1775 | unsigned char scsi3addr[], uint32_t log_unit) |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 1776 | { |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1777 | memcpy(scsi3addr, h->drv[log_unit]->LunID, |
| 1778 | sizeof(h->drv[log_unit]->LunID)); |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 1779 | } |
| 1780 | |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 1781 | /* This function gets the SCSI vendor, model, and revision of a logical drive |
| 1782 | * via the inquiry page 0. Model, vendor, and rev are set to empty strings if |
| 1783 | * they cannot be read. |
| 1784 | */ |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 1785 | static void cciss_get_device_descr(int ctlr, int logvol, |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 1786 | char *vendor, char *model, char *rev) |
| 1787 | { |
| 1788 | int rc; |
| 1789 | InquiryData_struct *inq_buf; |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 1790 | unsigned char scsi3addr[8]; |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 1791 | |
| 1792 | *vendor = '\0'; |
| 1793 | *model = '\0'; |
| 1794 | *rev = '\0'; |
| 1795 | |
| 1796 | inq_buf = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
| 1797 | if (!inq_buf) |
| 1798 | return; |
| 1799 | |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 1800 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 1801 | rc = sendcmd_withirq(CISS_INQUIRY, ctlr, inq_buf, sizeof(*inq_buf), 0, |
| 1802 | scsi3addr, TYPE_CMD); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 1803 | if (rc == IO_OK) { |
| 1804 | memcpy(vendor, &inq_buf->data_byte[8], VENDOR_LEN); |
| 1805 | vendor[VENDOR_LEN] = '\0'; |
| 1806 | memcpy(model, &inq_buf->data_byte[16], MODEL_LEN); |
| 1807 | model[MODEL_LEN] = '\0'; |
| 1808 | memcpy(rev, &inq_buf->data_byte[32], REV_LEN); |
| 1809 | rev[REV_LEN] = '\0'; |
| 1810 | } |
| 1811 | |
| 1812 | kfree(inq_buf); |
| 1813 | return; |
| 1814 | } |
| 1815 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1816 | /* This function gets the serial number of a logical drive via |
| 1817 | * inquiry page 0x83. Serial no. is 16 bytes. If the serial |
| 1818 | * number cannot be had, for whatever reason, 16 bytes of 0xff |
| 1819 | * are returned instead. |
| 1820 | */ |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 1821 | static void cciss_get_serial_no(int ctlr, int logvol, |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1822 | unsigned char *serial_no, int buflen) |
| 1823 | { |
| 1824 | #define PAGE_83_INQ_BYTES 64 |
| 1825 | int rc; |
| 1826 | unsigned char *buf; |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 1827 | unsigned char scsi3addr[8]; |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1828 | |
| 1829 | if (buflen > 16) |
| 1830 | buflen = 16; |
| 1831 | memset(serial_no, 0xff, buflen); |
| 1832 | buf = kzalloc(PAGE_83_INQ_BYTES, GFP_KERNEL); |
| 1833 | if (!buf) |
| 1834 | return; |
| 1835 | memset(serial_no, 0, buflen); |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 1836 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 1837 | rc = sendcmd_withirq(CISS_INQUIRY, ctlr, buf, |
| 1838 | PAGE_83_INQ_BYTES, 0x83, scsi3addr, TYPE_CMD); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1839 | if (rc == IO_OK) |
| 1840 | memcpy(serial_no, &buf[8], buflen); |
| 1841 | kfree(buf); |
| 1842 | return; |
| 1843 | } |
| 1844 | |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 1845 | /* |
| 1846 | * cciss_add_disk sets up the block device queue for a logical drive |
| 1847 | */ |
| 1848 | static int cciss_add_disk(ctlr_info_t *h, struct gendisk *disk, |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1849 | int drv_index) |
| 1850 | { |
| 1851 | disk->queue = blk_init_queue(do_cciss_request, &h->lock); |
Stephen M. Cameron | e8074f7 | 2009-09-17 13:47:24 -0500 | [diff] [blame] | 1852 | if (!disk->queue) |
| 1853 | goto init_queue_failure; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1854 | sprintf(disk->disk_name, "cciss/c%dd%d", h->ctlr, drv_index); |
| 1855 | disk->major = h->major; |
| 1856 | disk->first_minor = drv_index << NWD_SHIFT; |
| 1857 | disk->fops = &cciss_fops; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1858 | if (cciss_create_ld_sysfs_entry(h, drv_index)) |
| 1859 | goto cleanup_queue; |
| 1860 | disk->private_data = h->drv[drv_index]; |
| 1861 | disk->driverfs_dev = &h->drv[drv_index]->dev; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1862 | |
| 1863 | /* Set up queue information */ |
| 1864 | blk_queue_bounce_limit(disk->queue, h->pdev->dma_mask); |
| 1865 | |
| 1866 | /* This is a hardware imposed limit. */ |
Martin K. Petersen | 8a78362 | 2010-02-26 00:20:39 -0500 | [diff] [blame] | 1867 | blk_queue_max_segments(disk->queue, h->maxsgentries); |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1868 | |
Martin K. Petersen | 086fa5f | 2010-02-26 00:20:38 -0500 | [diff] [blame] | 1869 | blk_queue_max_hw_sectors(disk->queue, h->cciss_max_sectors); |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1870 | |
| 1871 | blk_queue_softirq_done(disk->queue, cciss_softirq_done); |
| 1872 | |
| 1873 | disk->queue->queuedata = h; |
| 1874 | |
Martin K. Petersen | e1defc4 | 2009-05-22 17:17:49 -0400 | [diff] [blame] | 1875 | blk_queue_logical_block_size(disk->queue, |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1876 | h->drv[drv_index]->block_size); |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1877 | |
| 1878 | /* Make sure all queue data is written out before */ |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1879 | /* setting h->drv[drv_index]->queue, as setting this */ |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1880 | /* allows the interrupt handler to start the queue */ |
| 1881 | wmb(); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1882 | h->drv[drv_index]->queue = disk->queue; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1883 | add_disk(disk); |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 1884 | return 0; |
| 1885 | |
| 1886 | cleanup_queue: |
| 1887 | blk_cleanup_queue(disk->queue); |
| 1888 | disk->queue = NULL; |
Stephen M. Cameron | e8074f7 | 2009-09-17 13:47:24 -0500 | [diff] [blame] | 1889 | init_queue_failure: |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 1890 | return -1; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1891 | } |
| 1892 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1893 | /* 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] | 1894 | * If the usage_count is zero and it is a heretofore unknown drive, or, |
| 1895 | * the drive's capacity, geometry, or serial number has changed, |
| 1896 | * then the drive information will be updated and the disk will be |
| 1897 | * re-registered with the kernel. If these conditions don't hold, |
| 1898 | * then it will be left alone for the next reboot. The exception to this |
| 1899 | * is disk 0 which will always be left registered with the kernel since it |
| 1900 | * is also the controller node. Any changes to disk 0 will show up on |
| 1901 | * the next reboot. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1902 | */ |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 1903 | static void cciss_update_drive_info(int ctlr, int drv_index, int first_time, |
| 1904 | int via_ioctl) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1905 | { |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1906 | ctlr_info_t *h = hba[ctlr]; |
| 1907 | struct gendisk *disk; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1908 | InquiryData_struct *inq_buff = NULL; |
| 1909 | unsigned int block_size; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 1910 | sector_t total_size; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1911 | unsigned long flags = 0; |
| 1912 | int ret = 0; |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1913 | drive_info_struct *drvinfo; |
| 1914 | |
| 1915 | /* Get information about the disk and modify the driver structure */ |
| 1916 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1917 | drvinfo = kzalloc(sizeof(*drvinfo), GFP_KERNEL); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1918 | if (inq_buff == NULL || drvinfo == NULL) |
| 1919 | goto mem_msg; |
| 1920 | |
| 1921 | /* testing to see if 16-byte CDBs are already being used */ |
| 1922 | if (h->cciss_read == CCISS_READ_16) { |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 1923 | cciss_read_capacity_16(h->ctlr, drv_index, |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1924 | &total_size, &block_size); |
| 1925 | |
| 1926 | } else { |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 1927 | cciss_read_capacity(ctlr, drv_index, &total_size, &block_size); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1928 | /* if read_capacity returns all F's this volume is >2TB */ |
| 1929 | /* in size so we switch to 16-byte CDB's for all */ |
| 1930 | /* read/write ops */ |
| 1931 | if (total_size == 0xFFFFFFFFULL) { |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 1932 | cciss_read_capacity_16(ctlr, drv_index, |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1933 | &total_size, &block_size); |
| 1934 | h->cciss_read = CCISS_READ_16; |
| 1935 | h->cciss_write = CCISS_WRITE_16; |
| 1936 | } else { |
| 1937 | h->cciss_read = CCISS_READ_10; |
| 1938 | h->cciss_write = CCISS_WRITE_10; |
| 1939 | } |
| 1940 | } |
| 1941 | |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 1942 | cciss_geometry_inquiry(ctlr, drv_index, total_size, block_size, |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1943 | inq_buff, drvinfo); |
| 1944 | drvinfo->block_size = block_size; |
| 1945 | drvinfo->nr_blocks = total_size + 1; |
| 1946 | |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 1947 | cciss_get_device_descr(ctlr, drv_index, drvinfo->vendor, |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 1948 | drvinfo->model, drvinfo->rev); |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 1949 | cciss_get_serial_no(ctlr, drv_index, drvinfo->serial_no, |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1950 | sizeof(drvinfo->serial_no)); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1951 | /* Save the lunid in case we deregister the disk, below. */ |
| 1952 | memcpy(drvinfo->LunID, h->drv[drv_index]->LunID, |
| 1953 | sizeof(drvinfo->LunID)); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1954 | |
| 1955 | /* 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] | 1956 | if (h->drv[drv_index]->raid_level != -1 && |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1957 | ((memcmp(drvinfo->serial_no, |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1958 | h->drv[drv_index]->serial_no, 16) == 0) && |
| 1959 | drvinfo->block_size == h->drv[drv_index]->block_size && |
| 1960 | drvinfo->nr_blocks == h->drv[drv_index]->nr_blocks && |
| 1961 | drvinfo->heads == h->drv[drv_index]->heads && |
| 1962 | drvinfo->sectors == h->drv[drv_index]->sectors && |
| 1963 | drvinfo->cylinders == h->drv[drv_index]->cylinders)) |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1964 | /* The disk is unchanged, nothing to update */ |
| 1965 | goto freeret; |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1966 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1967 | /* If we get here it's not the same disk, or something's changed, |
| 1968 | * so we need to * deregister it, and re-register it, if it's not |
| 1969 | * in use. |
| 1970 | * If the disk already exists then deregister it before proceeding |
| 1971 | * (unless it's the first disk (for the controller node). |
| 1972 | */ |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1973 | if (h->drv[drv_index]->raid_level != -1 && drv_index != 0) { |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1974 | printk(KERN_WARNING "disk %d has changed.\n", drv_index); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1975 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1976 | h->drv[drv_index]->busy_configuring = 1; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1977 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
scameron@beardog.cca.cpqcorp.net | e14ac67 | 2008-04-17 13:19:03 +0200 | [diff] [blame] | 1978 | |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1979 | /* deregister_disk sets h->drv[drv_index]->queue = NULL |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1980 | * which keeps the interrupt handler from starting |
| 1981 | * the queue. |
| 1982 | */ |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 1983 | ret = deregister_disk(h, drv_index, 0, via_ioctl); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1984 | } |
| 1985 | |
| 1986 | /* If the disk is in use return */ |
| 1987 | if (ret) |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1988 | goto freeret; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1989 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1990 | /* Save the new information from cciss_geometry_inquiry |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1991 | * and serial number inquiry. If the disk was deregistered |
| 1992 | * above, then h->drv[drv_index] will be NULL. |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1993 | */ |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1994 | if (h->drv[drv_index] == NULL) { |
| 1995 | drvinfo->device_initialized = 0; |
| 1996 | h->drv[drv_index] = drvinfo; |
| 1997 | drvinfo = NULL; /* so it won't be freed below. */ |
| 1998 | } else { |
| 1999 | /* special case for cxd0 */ |
| 2000 | h->drv[drv_index]->block_size = drvinfo->block_size; |
| 2001 | h->drv[drv_index]->nr_blocks = drvinfo->nr_blocks; |
| 2002 | h->drv[drv_index]->heads = drvinfo->heads; |
| 2003 | h->drv[drv_index]->sectors = drvinfo->sectors; |
| 2004 | h->drv[drv_index]->cylinders = drvinfo->cylinders; |
| 2005 | h->drv[drv_index]->raid_level = drvinfo->raid_level; |
| 2006 | memcpy(h->drv[drv_index]->serial_no, drvinfo->serial_no, 16); |
| 2007 | memcpy(h->drv[drv_index]->vendor, drvinfo->vendor, |
| 2008 | VENDOR_LEN + 1); |
| 2009 | memcpy(h->drv[drv_index]->model, drvinfo->model, MODEL_LEN + 1); |
| 2010 | memcpy(h->drv[drv_index]->rev, drvinfo->rev, REV_LEN + 1); |
| 2011 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2012 | |
| 2013 | ++h->num_luns; |
| 2014 | disk = h->gendisk[drv_index]; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2015 | set_capacity(disk, h->drv[drv_index]->nr_blocks); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2016 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2017 | /* If it's not disk 0 (drv_index != 0) |
| 2018 | * or if it was disk 0, but there was previously |
| 2019 | * no actual corresponding configured logical drive |
| 2020 | * (raid_leve == -1) then we want to update the |
| 2021 | * logical drive's information. |
| 2022 | */ |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 2023 | if (drv_index || first_time) { |
| 2024 | if (cciss_add_disk(h, disk, drv_index) != 0) { |
| 2025 | cciss_free_gendisk(h, drv_index); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2026 | cciss_free_drive_info(h, drv_index); |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 2027 | printk(KERN_WARNING "cciss:%d could not update " |
| 2028 | "disk %d\n", h->ctlr, drv_index); |
| 2029 | --h->num_luns; |
| 2030 | } |
| 2031 | } |
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 | freeret: |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2034 | kfree(inq_buff); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2035 | kfree(drvinfo); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2036 | return; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2037 | mem_msg: |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2038 | printk(KERN_ERR "cciss: out of memory\n"); |
| 2039 | goto freeret; |
| 2040 | } |
| 2041 | |
| 2042 | /* 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] | 2043 | * that has a null drv pointer and allocate the drive info struct and |
| 2044 | * will return that index This is where new drives will be added. |
| 2045 | * If the index to be returned is greater than the highest_lun index for |
| 2046 | * the controller then highest_lun is set * to this new index. |
| 2047 | * If there are no available indexes or if tha allocation fails, then -1 |
| 2048 | * is returned. * "controller_node" is used to know if this is a real |
| 2049 | * logical drive, or just the controller node, which determines if this |
| 2050 | * counts towards highest_lun. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2051 | */ |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2052 | 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] | 2053 | { |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2054 | int i; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2055 | drive_info_struct *drv; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2056 | |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2057 | /* Search for an empty slot for our drive info */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2058 | for (i = 0; i < CISS_MAX_LUN; i++) { |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2059 | |
| 2060 | /* if not cxd0 case, and it's occupied, skip it. */ |
| 2061 | if (h->drv[i] && i != 0) |
| 2062 | continue; |
| 2063 | /* |
| 2064 | * If it's cxd0 case, and drv is alloc'ed already, and a |
| 2065 | * disk is configured there, skip it. |
| 2066 | */ |
| 2067 | if (i == 0 && h->drv[i] && h->drv[i]->raid_level != -1) |
| 2068 | continue; |
| 2069 | |
| 2070 | /* |
| 2071 | * We've found an empty slot. Update highest_lun |
| 2072 | * provided this isn't just the fake cxd0 controller node. |
| 2073 | */ |
| 2074 | if (i > h->highest_lun && !controller_node) |
| 2075 | h->highest_lun = i; |
| 2076 | |
| 2077 | /* If adding a real disk at cxd0, and it's already alloc'ed */ |
| 2078 | if (i == 0 && h->drv[i] != NULL) |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2079 | return i; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2080 | |
| 2081 | /* |
| 2082 | * Found an empty slot, not already alloc'ed. Allocate it. |
| 2083 | * Mark it with raid_level == -1, so we know it's new later on. |
| 2084 | */ |
| 2085 | drv = kzalloc(sizeof(*drv), GFP_KERNEL); |
| 2086 | if (!drv) |
| 2087 | return -1; |
| 2088 | drv->raid_level = -1; /* so we know it's new */ |
| 2089 | h->drv[i] = drv; |
| 2090 | return i; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2091 | } |
| 2092 | return -1; |
| 2093 | } |
| 2094 | |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2095 | static void cciss_free_drive_info(ctlr_info_t *h, int drv_index) |
| 2096 | { |
| 2097 | kfree(h->drv[drv_index]); |
| 2098 | h->drv[drv_index] = NULL; |
| 2099 | } |
| 2100 | |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 2101 | static void cciss_free_gendisk(ctlr_info_t *h, int drv_index) |
| 2102 | { |
| 2103 | put_disk(h->gendisk[drv_index]); |
| 2104 | h->gendisk[drv_index] = NULL; |
| 2105 | } |
| 2106 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2107 | /* cciss_add_gendisk finds a free hba[]->drv structure |
| 2108 | * and allocates a gendisk if needed, and sets the lunid |
| 2109 | * in the drvinfo structure. It returns the index into |
| 2110 | * the ->drv[] array, or -1 if none are free. |
| 2111 | * is_controller_node indicates whether highest_lun should |
| 2112 | * count this disk, or if it's only being added to provide |
| 2113 | * a means to talk to the controller in case no logical |
| 2114 | * drives have yet been configured. |
| 2115 | */ |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 2116 | static int cciss_add_gendisk(ctlr_info_t *h, unsigned char lunid[], |
| 2117 | int controller_node) |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2118 | { |
| 2119 | int drv_index; |
| 2120 | |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2121 | drv_index = cciss_alloc_drive_info(h, controller_node); |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2122 | if (drv_index == -1) |
| 2123 | return -1; |
Stephen M. Cameron | 8ce5196 | 2009-09-17 13:47:34 -0500 | [diff] [blame] | 2124 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2125 | /*Check if the gendisk needs to be allocated */ |
| 2126 | if (!h->gendisk[drv_index]) { |
| 2127 | h->gendisk[drv_index] = |
| 2128 | alloc_disk(1 << NWD_SHIFT); |
| 2129 | if (!h->gendisk[drv_index]) { |
| 2130 | printk(KERN_ERR "cciss%d: could not " |
| 2131 | "allocate a new disk %d\n", |
| 2132 | h->ctlr, drv_index); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2133 | goto err_free_drive_info; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2134 | } |
| 2135 | } |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2136 | memcpy(h->drv[drv_index]->LunID, lunid, |
| 2137 | sizeof(h->drv[drv_index]->LunID)); |
| 2138 | if (cciss_create_ld_sysfs_entry(h, drv_index)) |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 2139 | goto err_free_disk; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2140 | /* Don't need to mark this busy because nobody */ |
| 2141 | /* else knows about this disk yet to contend */ |
| 2142 | /* for access to it. */ |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2143 | h->drv[drv_index]->busy_configuring = 0; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2144 | wmb(); |
| 2145 | return drv_index; |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 2146 | |
| 2147 | err_free_disk: |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 2148 | cciss_free_gendisk(h, drv_index); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2149 | err_free_drive_info: |
| 2150 | cciss_free_drive_info(h, drv_index); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 2151 | return -1; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2152 | } |
| 2153 | |
| 2154 | /* This is for the special case of a controller which |
| 2155 | * has no logical drives. In this case, we still need |
| 2156 | * to register a disk so the controller can be accessed |
| 2157 | * by the Array Config Utility. |
| 2158 | */ |
| 2159 | static void cciss_add_controller_node(ctlr_info_t *h) |
| 2160 | { |
| 2161 | struct gendisk *disk; |
| 2162 | int drv_index; |
| 2163 | |
| 2164 | if (h->gendisk[0] != NULL) /* already did this? Then bail. */ |
| 2165 | return; |
| 2166 | |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 2167 | drv_index = cciss_add_gendisk(h, CTLR_LUNID, 1); |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 2168 | if (drv_index == -1) |
| 2169 | goto error; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2170 | h->drv[drv_index]->block_size = 512; |
| 2171 | h->drv[drv_index]->nr_blocks = 0; |
| 2172 | h->drv[drv_index]->heads = 0; |
| 2173 | h->drv[drv_index]->sectors = 0; |
| 2174 | h->drv[drv_index]->cylinders = 0; |
| 2175 | h->drv[drv_index]->raid_level = -1; |
| 2176 | memset(h->drv[drv_index]->serial_no, 0, 16); |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2177 | disk = h->gendisk[drv_index]; |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 2178 | if (cciss_add_disk(h, disk, drv_index) == 0) |
| 2179 | return; |
| 2180 | cciss_free_gendisk(h, drv_index); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2181 | cciss_free_drive_info(h, drv_index); |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 2182 | error: |
| 2183 | printk(KERN_WARNING "cciss%d: could not " |
| 2184 | "add disk 0.\n", h->ctlr); |
| 2185 | return; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2186 | } |
| 2187 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2188 | /* This function will add and remove logical drives from the Logical |
Bjorn Helgaas | d14c4ab | 2006-06-25 05:49:04 -0700 | [diff] [blame] | 2189 | * drive array of the controller and maintain persistency of ordering |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2190 | * so that mount points are preserved until the next reboot. This allows |
| 2191 | * for the removal of logical drives in the middle of the drive array |
| 2192 | * without a re-ordering of those drives. |
| 2193 | * INPUT |
| 2194 | * h = The controller to perform the operations on |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2195 | */ |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 2196 | static int rebuild_lun_table(ctlr_info_t *h, int first_time, |
| 2197 | int via_ioctl) |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2198 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2199 | int ctlr = h->ctlr; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2200 | int num_luns; |
| 2201 | ReportLunData_struct *ld_buff = NULL; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2202 | int return_code; |
| 2203 | int listlength = 0; |
| 2204 | int i; |
| 2205 | int drv_found; |
| 2206 | int drv_index = 0; |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 2207 | unsigned char lunid[8] = CTLR_LUNID; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2208 | unsigned long flags; |
| 2209 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2210 | if (!capable(CAP_SYS_RAWIO)) |
| 2211 | return -EPERM; |
| 2212 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2213 | /* Set busy_configuring flag for this operation */ |
| 2214 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2215 | if (h->busy_configuring) { |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2216 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
| 2217 | return -EBUSY; |
| 2218 | } |
| 2219 | h->busy_configuring = 1; |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2220 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2221 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2222 | ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL); |
| 2223 | if (ld_buff == NULL) |
| 2224 | goto mem_msg; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2225 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2226 | return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff, |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2227 | sizeof(ReportLunData_struct), |
| 2228 | 0, CTLR_LUNID, TYPE_CMD); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2229 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2230 | if (return_code == IO_OK) |
| 2231 | listlength = be32_to_cpu(*(__be32 *) ld_buff->LUNListLength); |
| 2232 | else { /* reading number of logical volumes failed */ |
| 2233 | printk(KERN_WARNING "cciss: report logical volume" |
| 2234 | " command failed\n"); |
| 2235 | listlength = 0; |
| 2236 | goto freeret; |
| 2237 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2238 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2239 | num_luns = listlength / 8; /* 8 bytes per entry */ |
| 2240 | if (num_luns > CISS_MAX_LUN) { |
| 2241 | num_luns = CISS_MAX_LUN; |
| 2242 | printk(KERN_WARNING "cciss: more luns configured" |
| 2243 | " on controller than can be handled by" |
| 2244 | " this driver.\n"); |
| 2245 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2246 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2247 | if (num_luns == 0) |
| 2248 | cciss_add_controller_node(h); |
| 2249 | |
| 2250 | /* Compare controller drive array to driver's drive array |
| 2251 | * to see if any drives are missing on the controller due |
| 2252 | * to action of Array Config Utility (user deletes drive) |
| 2253 | * and deregister logical drives which have disappeared. |
| 2254 | */ |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2255 | for (i = 0; i <= h->highest_lun; i++) { |
| 2256 | int j; |
| 2257 | drv_found = 0; |
Stephen M. Cameron | d8a0be6 | 2008-12-18 14:55:11 +0100 | [diff] [blame] | 2258 | |
| 2259 | /* skip holes in the array from already deleted drives */ |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2260 | if (h->drv[i] == NULL) |
Stephen M. Cameron | d8a0be6 | 2008-12-18 14:55:11 +0100 | [diff] [blame] | 2261 | continue; |
| 2262 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2263 | for (j = 0; j < num_luns; j++) { |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 2264 | memcpy(lunid, &ld_buff->LUN[j][0], sizeof(lunid)); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2265 | if (memcmp(h->drv[i]->LunID, lunid, |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 2266 | sizeof(lunid)) == 0) { |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2267 | drv_found = 1; |
| 2268 | break; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2269 | } |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2270 | } |
| 2271 | if (!drv_found) { |
| 2272 | /* Deregister it from the OS, it's gone. */ |
| 2273 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2274 | h->drv[i]->busy_configuring = 1; |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2275 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 2276 | return_code = deregister_disk(h, i, 1, via_ioctl); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2277 | if (h->drv[i] != NULL) |
| 2278 | h->drv[i]->busy_configuring = 0; |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2279 | } |
| 2280 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2281 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2282 | /* Compare controller drive array to driver's drive array. |
| 2283 | * Check for updates in the drive information and any new drives |
| 2284 | * on the controller due to ACU adding logical drives, or changing |
| 2285 | * a logical drive's size, etc. Reregister any new/changed drives |
| 2286 | */ |
| 2287 | for (i = 0; i < num_luns; i++) { |
| 2288 | int j; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2289 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2290 | drv_found = 0; |
| 2291 | |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 2292 | memcpy(lunid, &ld_buff->LUN[i][0], sizeof(lunid)); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2293 | /* Find if the LUN is already in the drive array |
| 2294 | * of the driver. If so then update its info |
| 2295 | * if not in use. If it does not exist then find |
| 2296 | * the first free index and add it. |
| 2297 | */ |
| 2298 | for (j = 0; j <= h->highest_lun; j++) { |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2299 | if (h->drv[j] != NULL && |
| 2300 | memcmp(h->drv[j]->LunID, lunid, |
| 2301 | sizeof(h->drv[j]->LunID)) == 0) { |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2302 | drv_index = j; |
| 2303 | drv_found = 1; |
| 2304 | break; |
| 2305 | } |
| 2306 | } |
| 2307 | |
| 2308 | /* check if the drive was found already in the array */ |
| 2309 | if (!drv_found) { |
Mike Miller | eece695 | 2008-08-04 11:54:53 +0200 | [diff] [blame] | 2310 | drv_index = cciss_add_gendisk(h, lunid, 0); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2311 | if (drv_index == -1) |
| 2312 | goto freeret; |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2313 | } |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 2314 | cciss_update_drive_info(ctlr, drv_index, first_time, |
| 2315 | via_ioctl); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2316 | } /* end for */ |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2317 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2318 | freeret: |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2319 | kfree(ld_buff); |
| 2320 | h->busy_configuring = 0; |
| 2321 | /* We return -1 here to tell the ACU that we have registered/updated |
| 2322 | * all of the drives that we can and to keep it from calling us |
| 2323 | * additional times. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2324 | */ |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2325 | return -1; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2326 | mem_msg: |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2327 | printk(KERN_ERR "cciss: out of memory\n"); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2328 | h->busy_configuring = 0; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2329 | goto freeret; |
| 2330 | } |
| 2331 | |
Stephen M. Cameron | 9ddb27b | 2009-09-17 13:47:39 -0500 | [diff] [blame] | 2332 | static void cciss_clear_drive_info(drive_info_struct *drive_info) |
| 2333 | { |
| 2334 | /* zero out the disk size info */ |
| 2335 | drive_info->nr_blocks = 0; |
| 2336 | drive_info->block_size = 0; |
| 2337 | drive_info->heads = 0; |
| 2338 | drive_info->sectors = 0; |
| 2339 | drive_info->cylinders = 0; |
| 2340 | drive_info->raid_level = -1; |
| 2341 | memset(drive_info->serial_no, 0, sizeof(drive_info->serial_no)); |
| 2342 | memset(drive_info->model, 0, sizeof(drive_info->model)); |
| 2343 | memset(drive_info->rev, 0, sizeof(drive_info->rev)); |
| 2344 | memset(drive_info->vendor, 0, sizeof(drive_info->vendor)); |
| 2345 | /* |
| 2346 | * don't clear the LUNID though, we need to remember which |
| 2347 | * one this one is. |
| 2348 | */ |
| 2349 | } |
| 2350 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2351 | /* This function will deregister the disk and it's queue from the |
| 2352 | * kernel. It must be called with the controller lock held and the |
| 2353 | * drv structures busy_configuring flag set. It's parameters are: |
| 2354 | * |
| 2355 | * disk = This is the disk to be deregistered |
| 2356 | * drv = This is the drive_info_struct associated with the disk to be |
| 2357 | * deregistered. It contains information about the disk used |
| 2358 | * by the driver. |
| 2359 | * clear_all = This flag determines whether or not the disk information |
| 2360 | * is going to be completely cleared out and the highest_lun |
| 2361 | * reset. Sometimes we want to clear out information about |
Bjorn Helgaas | d14c4ab | 2006-06-25 05:49:04 -0700 | [diff] [blame] | 2362 | * the disk in preparation for re-adding it. In this case |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2363 | * the highest_lun should be left unchanged and the LunID |
| 2364 | * should not be cleared. |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 2365 | * via_ioctl |
| 2366 | * This indicates whether we've reached this path via ioctl. |
| 2367 | * This affects the maximum usage count allowed for c0d0 to be messed with. |
| 2368 | * If this path is reached via ioctl(), then the max_usage_count will |
| 2369 | * be 1, as the process calling ioctl() has got to have the device open. |
| 2370 | * 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] | 2371 | */ |
Stephen M. Cameron | a0ea862 | 2008-12-18 14:55:51 +0100 | [diff] [blame] | 2372 | static int deregister_disk(ctlr_info_t *h, int drv_index, |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 2373 | int clear_all, int via_ioctl) |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2374 | { |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 2375 | int i; |
Stephen M. Cameron | a0ea862 | 2008-12-18 14:55:51 +0100 | [diff] [blame] | 2376 | struct gendisk *disk; |
| 2377 | drive_info_struct *drv; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2378 | int recalculate_highest_lun; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2379 | |
| 2380 | if (!capable(CAP_SYS_RAWIO)) |
| 2381 | return -EPERM; |
| 2382 | |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2383 | drv = h->drv[drv_index]; |
Stephen M. Cameron | a0ea862 | 2008-12-18 14:55:51 +0100 | [diff] [blame] | 2384 | disk = h->gendisk[drv_index]; |
| 2385 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2386 | /* make sure logical volume is NOT is use */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2387 | if (clear_all || (h->gendisk[0] == disk)) { |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 2388 | if (drv->usage_count > via_ioctl) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2389 | return -EBUSY; |
| 2390 | } else if (drv->usage_count > 0) |
| 2391 | return -EBUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2392 | |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2393 | recalculate_highest_lun = (drv == h->drv[h->highest_lun]); |
| 2394 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2395 | /* invalidate the devices and deregister the disk. If it is disk |
| 2396 | * zero do not deregister it but just zero out it's values. This |
| 2397 | * allows us to delete disk zero but keep the controller registered. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2398 | */ |
| 2399 | if (h->gendisk[0] != disk) { |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2400 | struct request_queue *q = disk->queue; |
Stephen M. Cameron | 097d026 | 2009-09-17 13:47:19 -0500 | [diff] [blame] | 2401 | if (disk->flags & GENHD_FL_UP) { |
Stephen M. Cameron | 8ce5196 | 2009-09-17 13:47:34 -0500 | [diff] [blame] | 2402 | cciss_destroy_ld_sysfs_entry(h, drv_index, 0); |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2403 | del_gendisk(disk); |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2404 | } |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2405 | if (q) |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2406 | blk_cleanup_queue(q); |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2407 | /* If clear_all is set then we are deleting the logical |
| 2408 | * drive, not just refreshing its info. For drives |
| 2409 | * other than disk 0 we will call put_disk. We do not |
| 2410 | * do this for disk 0 as we need it to be able to |
| 2411 | * configure the controller. |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2412 | */ |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2413 | if (clear_all){ |
| 2414 | /* This isn't pretty, but we need to find the |
| 2415 | * disk in our array and NULL our the pointer. |
| 2416 | * This is so that we will call alloc_disk if |
| 2417 | * this index is used again later. |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2418 | */ |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2419 | for (i=0; i < CISS_MAX_LUN; i++){ |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2420 | if (h->gendisk[i] == disk) { |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2421 | h->gendisk[i] = NULL; |
| 2422 | break; |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 2423 | } |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 2424 | } |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2425 | put_disk(disk); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2426 | } |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 2427 | } else { |
| 2428 | set_capacity(disk, 0); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2429 | cciss_clear_drive_info(drv); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2430 | } |
| 2431 | |
| 2432 | --h->num_luns; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2433 | |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2434 | /* if it was the last disk, find the new hightest lun */ |
| 2435 | if (clear_all && recalculate_highest_lun) { |
Bill Pemberton | c2d45b4 | 2010-04-30 09:34:32 -0400 | [diff] [blame] | 2436 | int newhighest = -1; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2437 | for (i = 0; i <= h->highest_lun; i++) { |
| 2438 | /* if the disk has size > 0, it is available */ |
| 2439 | if (h->drv[i] && h->drv[i]->heads) |
| 2440 | newhighest = i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2441 | } |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2442 | h->highest_lun = newhighest; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2443 | } |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 2444 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2445 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2446 | |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2447 | static int fill_cmd(CommandList_struct *c, __u8 cmd, int ctlr, void *buff, |
| 2448 | size_t size, __u8 page_code, unsigned char *scsi3addr, |
| 2449 | int cmd_type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2450 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2451 | ctlr_info_t *h = hba[ctlr]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2452 | u64bit buff_dma_handle; |
| 2453 | int status = IO_OK; |
| 2454 | |
| 2455 | c->cmd_type = CMD_IOCTL_PEND; |
| 2456 | c->Header.ReplyQueue = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2457 | if (buff != NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2458 | c->Header.SGList = 1; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2459 | c->Header.SGTotal = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2460 | } else { |
| 2461 | c->Header.SGList = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2462 | c->Header.SGTotal = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2463 | } |
| 2464 | c->Header.Tag.lower = c->busaddr; |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2465 | memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2466 | |
| 2467 | c->Request.Type.Type = cmd_type; |
| 2468 | if (cmd_type == TYPE_CMD) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2469 | switch (cmd) { |
| 2470 | case CISS_INQUIRY: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2471 | /* are we trying to read a vital product page */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2472 | if (page_code != 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2473 | c->Request.CDB[1] = 0x01; |
| 2474 | c->Request.CDB[2] = page_code; |
| 2475 | } |
| 2476 | c->Request.CDBLen = 6; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2477 | c->Request.Type.Attribute = ATTR_SIMPLE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2478 | c->Request.Type.Direction = XFER_READ; |
| 2479 | c->Request.Timeout = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2480 | c->Request.CDB[0] = CISS_INQUIRY; |
| 2481 | c->Request.CDB[4] = size & 0xFF; |
| 2482 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2483 | case CISS_REPORT_LOG: |
| 2484 | case CISS_REPORT_PHYS: |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2485 | /* Talking to controller so It's a physical command |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2486 | mode = 00 target = 0. Nothing to write. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2487 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2488 | c->Request.CDBLen = 12; |
| 2489 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2490 | c->Request.Type.Direction = XFER_READ; |
| 2491 | c->Request.Timeout = 0; |
| 2492 | c->Request.CDB[0] = cmd; |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 2493 | c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2494 | c->Request.CDB[7] = (size >> 16) & 0xFF; |
| 2495 | c->Request.CDB[8] = (size >> 8) & 0xFF; |
| 2496 | c->Request.CDB[9] = size & 0xFF; |
| 2497 | break; |
| 2498 | |
| 2499 | case CCISS_READ_CAPACITY: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2500 | c->Request.CDBLen = 10; |
| 2501 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2502 | c->Request.Type.Direction = XFER_READ; |
| 2503 | c->Request.Timeout = 0; |
| 2504 | c->Request.CDB[0] = cmd; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2505 | break; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2506 | case CCISS_READ_CAPACITY_16: |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2507 | c->Request.CDBLen = 16; |
| 2508 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2509 | c->Request.Type.Direction = XFER_READ; |
| 2510 | c->Request.Timeout = 0; |
| 2511 | c->Request.CDB[0] = cmd; |
| 2512 | c->Request.CDB[1] = 0x10; |
| 2513 | c->Request.CDB[10] = (size >> 24) & 0xFF; |
| 2514 | c->Request.CDB[11] = (size >> 16) & 0xFF; |
| 2515 | c->Request.CDB[12] = (size >> 8) & 0xFF; |
| 2516 | c->Request.CDB[13] = size & 0xFF; |
| 2517 | c->Request.Timeout = 0; |
| 2518 | c->Request.CDB[0] = cmd; |
| 2519 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2520 | case CCISS_CACHE_FLUSH: |
| 2521 | c->Request.CDBLen = 12; |
| 2522 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2523 | c->Request.Type.Direction = XFER_WRITE; |
| 2524 | c->Request.Timeout = 0; |
| 2525 | c->Request.CDB[0] = BMIC_WRITE; |
| 2526 | c->Request.CDB[6] = BMIC_CACHE_FLUSH; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2527 | break; |
Stephen M. Cameron | 88f627a | 2009-06-02 14:48:11 +0200 | [diff] [blame] | 2528 | case TEST_UNIT_READY: |
Stephen M. Cameron | 88f627a | 2009-06-02 14:48:11 +0200 | [diff] [blame] | 2529 | c->Request.CDBLen = 6; |
| 2530 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2531 | c->Request.Type.Direction = XFER_NONE; |
| 2532 | c->Request.Timeout = 0; |
| 2533 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2534 | default: |
| 2535 | printk(KERN_WARNING |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2536 | "cciss%d: Unknown Command 0x%c\n", ctlr, cmd); |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 2537 | return IO_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2538 | } |
| 2539 | } else if (cmd_type == TYPE_MSG) { |
| 2540 | switch (cmd) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2541 | case 0: /* ABORT message */ |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2542 | c->Request.CDBLen = 12; |
| 2543 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2544 | c->Request.Type.Direction = XFER_WRITE; |
| 2545 | c->Request.Timeout = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2546 | c->Request.CDB[0] = cmd; /* abort */ |
| 2547 | c->Request.CDB[1] = 0; /* abort a command */ |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2548 | /* buff contains the tag of the command to abort */ |
| 2549 | memcpy(&c->Request.CDB[4], buff, 8); |
| 2550 | break; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2551 | case 1: /* RESET message */ |
Stephen M. Cameron | 88f627a | 2009-06-02 14:48:11 +0200 | [diff] [blame] | 2552 | c->Request.CDBLen = 16; |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2553 | c->Request.Type.Attribute = ATTR_SIMPLE; |
Stephen M. Cameron | 88f627a | 2009-06-02 14:48:11 +0200 | [diff] [blame] | 2554 | c->Request.Type.Direction = XFER_NONE; |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2555 | c->Request.Timeout = 0; |
| 2556 | memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB)); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2557 | c->Request.CDB[0] = cmd; /* reset */ |
Stephen M. Cameron | 88f627a | 2009-06-02 14:48:11 +0200 | [diff] [blame] | 2558 | c->Request.CDB[1] = 0x03; /* reset a target */ |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2559 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2560 | case 3: /* No-Op message */ |
| 2561 | c->Request.CDBLen = 1; |
| 2562 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2563 | c->Request.Type.Direction = XFER_WRITE; |
| 2564 | c->Request.Timeout = 0; |
| 2565 | c->Request.CDB[0] = cmd; |
| 2566 | break; |
| 2567 | default: |
| 2568 | printk(KERN_WARNING |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2569 | "cciss%d: unknown message type %d\n", ctlr, cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2570 | return IO_ERROR; |
| 2571 | } |
| 2572 | } else { |
| 2573 | printk(KERN_WARNING |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2574 | "cciss%d: unknown command type %d\n", ctlr, cmd_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2575 | return IO_ERROR; |
| 2576 | } |
| 2577 | /* Fill in the scatter gather information */ |
| 2578 | if (size > 0) { |
| 2579 | buff_dma_handle.val = (__u64) pci_map_single(h->pdev, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2580 | buff, size, |
| 2581 | PCI_DMA_BIDIRECTIONAL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2582 | c->SG[0].Addr.lower = buff_dma_handle.val32.lower; |
| 2583 | c->SG[0].Addr.upper = buff_dma_handle.val32.upper; |
| 2584 | c->SG[0].Len = size; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2585 | c->SG[0].Ext = 0; /* we are not chaining */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2586 | } |
| 2587 | return status; |
| 2588 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2589 | |
scameron@beardog.cca.cpqcorp.net | 3c2ab40 | 2009-06-08 16:04:35 -0500 | [diff] [blame] | 2590 | static int check_target_status(ctlr_info_t *h, CommandList_struct *c) |
| 2591 | { |
| 2592 | switch (c->err_info->ScsiStatus) { |
| 2593 | case SAM_STAT_GOOD: |
| 2594 | return IO_OK; |
| 2595 | case SAM_STAT_CHECK_CONDITION: |
| 2596 | switch (0xf & c->err_info->SenseInfo[2]) { |
| 2597 | case 0: return IO_OK; /* no sense */ |
| 2598 | case 1: return IO_OK; /* recovered error */ |
| 2599 | default: |
Stephen M. Cameron | c08fac6 | 2009-11-12 12:49:25 -0600 | [diff] [blame] | 2600 | if (check_for_unit_attention(h, c)) |
| 2601 | return IO_NEEDS_RETRY; |
scameron@beardog.cca.cpqcorp.net | 3c2ab40 | 2009-06-08 16:04:35 -0500 | [diff] [blame] | 2602 | printk(KERN_WARNING "cciss%d: cmd 0x%02x " |
| 2603 | "check condition, sense key = 0x%02x\n", |
| 2604 | h->ctlr, c->Request.CDB[0], |
| 2605 | c->err_info->SenseInfo[2]); |
| 2606 | } |
| 2607 | break; |
| 2608 | default: |
| 2609 | printk(KERN_WARNING "cciss%d: cmd 0x%02x" |
| 2610 | "scsi status = 0x%02x\n", h->ctlr, |
| 2611 | c->Request.CDB[0], c->err_info->ScsiStatus); |
| 2612 | break; |
| 2613 | } |
| 2614 | return IO_ERROR; |
| 2615 | } |
| 2616 | |
scameron@beardog.cca.cpqcorp.net | 789a424 | 2009-06-08 16:05:56 -0500 | [diff] [blame] | 2617 | 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] | 2618 | { |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2619 | int return_status = IO_OK; |
| 2620 | |
scameron@beardog.cca.cpqcorp.net | 789a424 | 2009-06-08 16:05:56 -0500 | [diff] [blame] | 2621 | if (c->err_info->CommandStatus == CMD_SUCCESS) |
| 2622 | return IO_OK; |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2623 | |
| 2624 | switch (c->err_info->CommandStatus) { |
| 2625 | case CMD_TARGET_STATUS: |
scameron@beardog.cca.cpqcorp.net | 3c2ab40 | 2009-06-08 16:04:35 -0500 | [diff] [blame] | 2626 | return_status = check_target_status(h, c); |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2627 | break; |
| 2628 | case CMD_DATA_UNDERRUN: |
| 2629 | case CMD_DATA_OVERRUN: |
| 2630 | /* expected for inquiry and report lun commands */ |
| 2631 | break; |
| 2632 | case CMD_INVALID: |
scameron@beardog.cca.cpqcorp.net | 789a424 | 2009-06-08 16:05:56 -0500 | [diff] [blame] | 2633 | printk(KERN_WARNING "cciss: cmd 0x%02x is " |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2634 | "reported invalid\n", c->Request.CDB[0]); |
| 2635 | return_status = IO_ERROR; |
| 2636 | break; |
| 2637 | case CMD_PROTOCOL_ERR: |
| 2638 | printk(KERN_WARNING "cciss: cmd 0x%02x has " |
| 2639 | "protocol error \n", c->Request.CDB[0]); |
| 2640 | return_status = IO_ERROR; |
| 2641 | break; |
| 2642 | case CMD_HARDWARE_ERR: |
| 2643 | printk(KERN_WARNING "cciss: cmd 0x%02x had " |
| 2644 | " hardware error\n", c->Request.CDB[0]); |
| 2645 | return_status = IO_ERROR; |
| 2646 | break; |
| 2647 | case CMD_CONNECTION_LOST: |
| 2648 | printk(KERN_WARNING "cciss: cmd 0x%02x had " |
| 2649 | "connection lost\n", c->Request.CDB[0]); |
| 2650 | return_status = IO_ERROR; |
| 2651 | break; |
| 2652 | case CMD_ABORTED: |
| 2653 | printk(KERN_WARNING "cciss: cmd 0x%02x was " |
| 2654 | "aborted\n", c->Request.CDB[0]); |
| 2655 | return_status = IO_ERROR; |
| 2656 | break; |
| 2657 | case CMD_ABORT_FAILED: |
| 2658 | printk(KERN_WARNING "cciss: cmd 0x%02x reports " |
| 2659 | "abort failed\n", c->Request.CDB[0]); |
| 2660 | return_status = IO_ERROR; |
| 2661 | break; |
| 2662 | case CMD_UNSOLICITED_ABORT: |
| 2663 | printk(KERN_WARNING |
| 2664 | "cciss%d: unsolicited abort 0x%02x\n", h->ctlr, |
| 2665 | c->Request.CDB[0]); |
scameron@beardog.cca.cpqcorp.net | 789a424 | 2009-06-08 16:05:56 -0500 | [diff] [blame] | 2666 | return_status = IO_NEEDS_RETRY; |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2667 | break; |
| 2668 | default: |
| 2669 | printk(KERN_WARNING "cciss: cmd 0x%02x returned " |
| 2670 | "unknown status %x\n", c->Request.CDB[0], |
| 2671 | c->err_info->CommandStatus); |
| 2672 | return_status = IO_ERROR; |
| 2673 | } |
scameron@beardog.cca.cpqcorp.net | 789a424 | 2009-06-08 16:05:56 -0500 | [diff] [blame] | 2674 | return return_status; |
| 2675 | } |
| 2676 | |
| 2677 | static int sendcmd_withirq_core(ctlr_info_t *h, CommandList_struct *c, |
| 2678 | int attempt_retry) |
| 2679 | { |
| 2680 | DECLARE_COMPLETION_ONSTACK(wait); |
| 2681 | u64bit buff_dma_handle; |
| 2682 | unsigned long flags; |
| 2683 | int return_status = IO_OK; |
| 2684 | |
| 2685 | resend_cmd2: |
| 2686 | c->waiting = &wait; |
| 2687 | /* Put the request on the tail of the queue and send it */ |
| 2688 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
| 2689 | addQ(&h->reqQ, c); |
| 2690 | h->Qdepth++; |
| 2691 | start_io(h); |
| 2692 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
| 2693 | |
| 2694 | wait_for_completion(&wait); |
| 2695 | |
| 2696 | if (c->err_info->CommandStatus == 0 || !attempt_retry) |
| 2697 | goto command_done; |
| 2698 | |
| 2699 | return_status = process_sendcmd_error(h, c); |
| 2700 | |
| 2701 | if (return_status == IO_NEEDS_RETRY && |
| 2702 | c->retry_count < MAX_CMD_RETRIES) { |
| 2703 | printk(KERN_WARNING "cciss%d: retrying 0x%02x\n", h->ctlr, |
| 2704 | c->Request.CDB[0]); |
| 2705 | c->retry_count++; |
| 2706 | /* erase the old error information */ |
| 2707 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); |
| 2708 | return_status = IO_OK; |
| 2709 | INIT_COMPLETION(wait); |
| 2710 | goto resend_cmd2; |
| 2711 | } |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2712 | |
| 2713 | command_done: |
| 2714 | /* unlock the buffers from DMA */ |
| 2715 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
| 2716 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; |
| 2717 | pci_unmap_single(h->pdev, (dma_addr_t) buff_dma_handle.val, |
| 2718 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); |
| 2719 | return return_status; |
| 2720 | } |
| 2721 | |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2722 | static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size, |
| 2723 | __u8 page_code, unsigned char scsi3addr[], |
| 2724 | int cmd_type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2725 | { |
| 2726 | ctlr_info_t *h = hba[ctlr]; |
| 2727 | CommandList_struct *c; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2728 | int return_status; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2729 | |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2730 | c = cmd_alloc(h, 0); |
| 2731 | if (!c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2732 | return -ENOMEM; |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2733 | return_status = fill_cmd(c, cmd, ctlr, buff, size, page_code, |
| 2734 | scsi3addr, cmd_type); |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2735 | if (return_status == IO_OK) |
scameron@beardog.cca.cpqcorp.net | 789a424 | 2009-06-08 16:05:56 -0500 | [diff] [blame] | 2736 | return_status = sendcmd_withirq_core(h, c, 1); |
| 2737 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2738 | cmd_free(h, c, 0); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2739 | return return_status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2740 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2741 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2742 | static void cciss_geometry_inquiry(int ctlr, int logvol, |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 2743 | sector_t total_size, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2744 | unsigned int block_size, |
| 2745 | InquiryData_struct *inq_buff, |
| 2746 | drive_info_struct *drv) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2747 | { |
| 2748 | int return_code; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2749 | unsigned long t; |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2750 | unsigned char scsi3addr[8]; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2751 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2752 | memset(inq_buff, 0, sizeof(InquiryData_struct)); |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2753 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 2754 | return_code = sendcmd_withirq(CISS_INQUIRY, ctlr, inq_buff, |
| 2755 | sizeof(*inq_buff), 0xC1, scsi3addr, TYPE_CMD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2756 | if (return_code == IO_OK) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2757 | if (inq_buff->data_byte[8] == 0xFF) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2758 | printk(KERN_WARNING |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2759 | "cciss: reading geometry failed, volume " |
| 2760 | "does not support reading geometry\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2761 | drv->heads = 255; |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 2762 | drv->sectors = 32; /* Sectors per track */ |
Mike Miller (OS Dev) | 7f42d3b | 2007-04-04 19:08:23 -0700 | [diff] [blame] | 2763 | drv->cylinders = total_size + 1; |
Mike Miller | 89f97ad | 2006-12-18 10:59:39 +0100 | [diff] [blame] | 2764 | drv->raid_level = RAID_UNKNOWN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2765 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2766 | drv->heads = inq_buff->data_byte[6]; |
| 2767 | drv->sectors = inq_buff->data_byte[7]; |
| 2768 | drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8; |
| 2769 | drv->cylinders += inq_buff->data_byte[5]; |
| 2770 | drv->raid_level = inq_buff->data_byte[8]; |
Matthew Wilcox | 3f7705e | 2006-10-21 10:24:19 -0700 | [diff] [blame] | 2771 | } |
| 2772 | drv->block_size = block_size; |
Mike Miller (OS Dev) | 97c0697 | 2007-03-06 01:42:14 -0800 | [diff] [blame] | 2773 | drv->nr_blocks = total_size + 1; |
Matthew Wilcox | 3f7705e | 2006-10-21 10:24:19 -0700 | [diff] [blame] | 2774 | t = drv->heads * drv->sectors; |
| 2775 | if (t > 1) { |
Mike Miller (OS Dev) | 97c0697 | 2007-03-06 01:42:14 -0800 | [diff] [blame] | 2776 | sector_t real_size = total_size + 1; |
| 2777 | unsigned long rem = sector_div(real_size, t); |
Matthew Wilcox | 3f7705e | 2006-10-21 10:24:19 -0700 | [diff] [blame] | 2778 | if (rem) |
Mike Miller (OS Dev) | 97c0697 | 2007-03-06 01:42:14 -0800 | [diff] [blame] | 2779 | real_size++; |
| 2780 | drv->cylinders = real_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2781 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2782 | } else { /* Get geometry failed */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2783 | printk(KERN_WARNING "cciss: reading geometry failed\n"); |
| 2784 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2785 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2786 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2787 | static void |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 2788 | cciss_read_capacity(int ctlr, int logvol, sector_t *total_size, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2789 | unsigned int *block_size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2790 | { |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2791 | ReadCapdata_struct *buf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2792 | int return_code; |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2793 | unsigned char scsi3addr[8]; |
Mariusz Kozlowski | 1aebe18 | 2007-08-11 22:34:29 +0200 | [diff] [blame] | 2794 | |
| 2795 | buf = kzalloc(sizeof(ReadCapdata_struct), GFP_KERNEL); |
| 2796 | if (!buf) { |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2797 | printk(KERN_WARNING "cciss: out of memory\n"); |
| 2798 | return; |
| 2799 | } |
Mariusz Kozlowski | 1aebe18 | 2007-08-11 22:34:29 +0200 | [diff] [blame] | 2800 | |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2801 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 2802 | return_code = sendcmd_withirq(CCISS_READ_CAPACITY, ctlr, buf, |
| 2803 | sizeof(ReadCapdata_struct), 0, scsi3addr, TYPE_CMD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2804 | if (return_code == IO_OK) { |
Al Viro | 4c1f2b31 | 2007-03-14 09:19:10 +0000 | [diff] [blame] | 2805 | *total_size = be32_to_cpu(*(__be32 *) buf->total_size); |
| 2806 | *block_size = be32_to_cpu(*(__be32 *) buf->block_size); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2807 | } else { /* read capacity command failed */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2808 | printk(KERN_WARNING "cciss: read capacity failed\n"); |
| 2809 | *total_size = 0; |
| 2810 | *block_size = BLOCK_SIZE; |
| 2811 | } |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2812 | kfree(buf); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2813 | } |
| 2814 | |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 2815 | static void cciss_read_capacity_16(int ctlr, int logvol, |
| 2816 | sector_t *total_size, unsigned int *block_size) |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2817 | { |
| 2818 | ReadCapdata_struct_16 *buf; |
| 2819 | int return_code; |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2820 | unsigned char scsi3addr[8]; |
Mariusz Kozlowski | 1aebe18 | 2007-08-11 22:34:29 +0200 | [diff] [blame] | 2821 | |
| 2822 | buf = kzalloc(sizeof(ReadCapdata_struct_16), GFP_KERNEL); |
| 2823 | if (!buf) { |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2824 | printk(KERN_WARNING "cciss: out of memory\n"); |
| 2825 | return; |
| 2826 | } |
Mariusz Kozlowski | 1aebe18 | 2007-08-11 22:34:29 +0200 | [diff] [blame] | 2827 | |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2828 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 2829 | return_code = sendcmd_withirq(CCISS_READ_CAPACITY_16, |
| 2830 | ctlr, buf, sizeof(ReadCapdata_struct_16), |
| 2831 | 0, scsi3addr, TYPE_CMD); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2832 | if (return_code == IO_OK) { |
Al Viro | 4c1f2b31 | 2007-03-14 09:19:10 +0000 | [diff] [blame] | 2833 | *total_size = be64_to_cpu(*(__be64 *) buf->total_size); |
| 2834 | *block_size = be32_to_cpu(*(__be32 *) buf->block_size); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2835 | } else { /* read capacity command failed */ |
| 2836 | printk(KERN_WARNING "cciss: read capacity failed\n"); |
| 2837 | *total_size = 0; |
| 2838 | *block_size = BLOCK_SIZE; |
| 2839 | } |
Randy Dunlap | 7b92aad | 2006-10-28 10:38:40 -0700 | [diff] [blame] | 2840 | printk(KERN_INFO " blocks= %llu block_size= %d\n", |
Mike Miller (OS Dev) | 97c0697 | 2007-03-06 01:42:14 -0800 | [diff] [blame] | 2841 | (unsigned long long)*total_size+1, *block_size); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2842 | kfree(buf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2843 | } |
| 2844 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2845 | static int cciss_revalidate(struct gendisk *disk) |
| 2846 | { |
| 2847 | ctlr_info_t *h = get_host(disk); |
| 2848 | drive_info_struct *drv = get_drv(disk); |
| 2849 | int logvol; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2850 | int FOUND = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2851 | unsigned int block_size; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2852 | sector_t total_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2853 | InquiryData_struct *inq_buff = NULL; |
| 2854 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2855 | for (logvol = 0; logvol < CISS_MAX_LUN; logvol++) { |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2856 | if (memcmp(h->drv[logvol]->LunID, drv->LunID, |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 2857 | sizeof(drv->LunID)) == 0) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2858 | FOUND = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2859 | break; |
| 2860 | } |
| 2861 | } |
| 2862 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2863 | if (!FOUND) |
| 2864 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2865 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2866 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
| 2867 | if (inq_buff == NULL) { |
| 2868 | printk(KERN_WARNING "cciss: out of memory\n"); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2869 | return 1; |
| 2870 | } |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2871 | if (h->cciss_read == CCISS_READ_10) { |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 2872 | cciss_read_capacity(h->ctlr, logvol, |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2873 | &total_size, &block_size); |
| 2874 | } else { |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 2875 | cciss_read_capacity_16(h->ctlr, logvol, |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2876 | &total_size, &block_size); |
| 2877 | } |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 2878 | cciss_geometry_inquiry(h->ctlr, logvol, total_size, block_size, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2879 | inq_buff, drv); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2880 | |
Martin K. Petersen | e1defc4 | 2009-05-22 17:17:49 -0400 | [diff] [blame] | 2881 | blk_queue_logical_block_size(drv->queue, drv->block_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2882 | set_capacity(disk, drv->nr_blocks); |
| 2883 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2884 | kfree(inq_buff); |
| 2885 | return 0; |
| 2886 | } |
| 2887 | |
| 2888 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2889 | * Map (physical) PCI mem into (virtual) kernel space |
| 2890 | */ |
| 2891 | static void __iomem *remap_pci_mem(ulong base, ulong size) |
| 2892 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2893 | ulong page_base = ((ulong) base) & PAGE_MASK; |
| 2894 | ulong page_offs = ((ulong) base) - page_base; |
| 2895 | void __iomem *page_remapped = ioremap(page_base, page_offs + size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2896 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2897 | return page_remapped ? (page_remapped + page_offs) : NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2898 | } |
| 2899 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2900 | /* |
| 2901 | * Takes jobs of the Q and sends them to the hardware, then puts it on |
| 2902 | * the Q to wait for completion. |
| 2903 | */ |
| 2904 | static void start_io(ctlr_info_t *h) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2905 | { |
| 2906 | CommandList_struct *c; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2907 | |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 2908 | while (!hlist_empty(&h->reqQ)) { |
| 2909 | c = hlist_entry(h->reqQ.first, CommandList_struct, list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2910 | /* can't do anything if fifo is full */ |
| 2911 | if ((h->access.fifo_full(h))) { |
| 2912 | printk(KERN_WARNING "cciss: fifo full\n"); |
| 2913 | break; |
| 2914 | } |
| 2915 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2916 | /* Get the first entry from the Request Q */ |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 2917 | removeQ(c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2918 | h->Qdepth--; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2919 | |
| 2920 | /* Tell the controller execute command */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2921 | h->access.submit_command(h, c); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2922 | |
| 2923 | /* Put job onto the completed Q */ |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 2924 | addQ(&h->cmpQ, c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2925 | } |
| 2926 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2927 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2928 | /* Assumes that CCISS_LOCK(h->ctlr) is held. */ |
| 2929 | /* Zeros out the error record and then resends the command back */ |
| 2930 | /* to the controller */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2931 | 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] | 2932 | { |
| 2933 | /* erase the old error information */ |
| 2934 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); |
| 2935 | |
| 2936 | /* add it to software queue and then send it to the controller */ |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 2937 | addQ(&h->reqQ, c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2938 | h->Qdepth++; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2939 | if (h->Qdepth > h->maxQsinceinit) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2940 | h->maxQsinceinit = h->Qdepth; |
| 2941 | |
| 2942 | start_io(h); |
| 2943 | } |
Jens Axboe | a9925a0 | 2006-01-09 16:04:06 +0100 | [diff] [blame] | 2944 | |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2945 | static inline unsigned int make_status_bytes(unsigned int scsi_status_byte, |
| 2946 | unsigned int msg_byte, unsigned int host_byte, |
| 2947 | unsigned int driver_byte) |
| 2948 | { |
| 2949 | /* inverse of macros in scsi.h */ |
| 2950 | return (scsi_status_byte & 0xff) | |
| 2951 | ((msg_byte & 0xff) << 8) | |
| 2952 | ((host_byte & 0xff) << 16) | |
| 2953 | ((driver_byte & 0xff) << 24); |
| 2954 | } |
| 2955 | |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 2956 | static inline int evaluate_target_status(ctlr_info_t *h, |
| 2957 | CommandList_struct *cmd, int *retry_cmd) |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 2958 | { |
| 2959 | unsigned char sense_key; |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2960 | unsigned char status_byte, msg_byte, host_byte, driver_byte; |
| 2961 | int error_value; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 2962 | |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 2963 | *retry_cmd = 0; |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2964 | /* If we get in here, it means we got "target status", that is, scsi status */ |
| 2965 | status_byte = cmd->err_info->ScsiStatus; |
| 2966 | driver_byte = DRIVER_OK; |
| 2967 | msg_byte = cmd->err_info->CommandStatus; /* correct? seems too device specific */ |
| 2968 | |
| 2969 | if (blk_pc_request(cmd->rq)) |
| 2970 | host_byte = DID_PASSTHROUGH; |
| 2971 | else |
| 2972 | host_byte = DID_OK; |
| 2973 | |
| 2974 | error_value = make_status_bytes(status_byte, msg_byte, |
| 2975 | host_byte, driver_byte); |
| 2976 | |
| 2977 | if (cmd->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) { |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 2978 | if (!blk_pc_request(cmd->rq)) |
| 2979 | printk(KERN_WARNING "cciss: cmd %p " |
| 2980 | "has SCSI Status 0x%x\n", |
| 2981 | cmd, cmd->err_info->ScsiStatus); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2982 | return error_value; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 2983 | } |
| 2984 | |
| 2985 | /* check the sense key */ |
| 2986 | sense_key = 0xf & cmd->err_info->SenseInfo[2]; |
| 2987 | /* no status or recovered error */ |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2988 | if (((sense_key == 0x0) || (sense_key == 0x1)) && !blk_pc_request(cmd->rq)) |
| 2989 | error_value = 0; |
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 | if (check_for_unit_attention(h, cmd)) { |
| 2992 | *retry_cmd = !blk_pc_request(cmd->rq); |
| 2993 | return 0; |
| 2994 | } |
| 2995 | |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 2996 | if (!blk_pc_request(cmd->rq)) { /* Not SG_IO or similar? */ |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2997 | if (error_value != 0) |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 2998 | printk(KERN_WARNING "cciss: cmd %p has CHECK CONDITION" |
| 2999 | " sense key = 0x%x\n", cmd, sense_key); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3000 | return error_value; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3001 | } |
| 3002 | |
| 3003 | /* SG_IO or similar, copy sense data back */ |
| 3004 | if (cmd->rq->sense) { |
| 3005 | if (cmd->rq->sense_len > cmd->err_info->SenseLen) |
| 3006 | cmd->rq->sense_len = cmd->err_info->SenseLen; |
| 3007 | memcpy(cmd->rq->sense, cmd->err_info->SenseInfo, |
| 3008 | cmd->rq->sense_len); |
| 3009 | } else |
| 3010 | cmd->rq->sense_len = 0; |
| 3011 | |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3012 | return error_value; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3013 | } |
| 3014 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3015 | /* 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] | 3016 | * buffers for the completed job. Note that this function does not need |
| 3017 | * to hold the hba/queue lock. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3018 | */ |
| 3019 | static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd, |
| 3020 | int timeout) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3021 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3022 | int retry_cmd = 0; |
Mike Miller (OS Dev) | 198b766 | 2007-05-08 00:29:34 -0700 | [diff] [blame] | 3023 | struct request *rq = cmd->rq; |
| 3024 | |
| 3025 | rq->errors = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3026 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3027 | if (timeout) |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3028 | rq->errors = make_status_bytes(0, 0, 0, DRIVER_TIMEOUT); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3029 | |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3030 | if (cmd->err_info->CommandStatus == 0) /* no error has occurred */ |
| 3031 | goto after_error_processing; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3032 | |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3033 | switch (cmd->err_info->CommandStatus) { |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3034 | case CMD_TARGET_STATUS: |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3035 | rq->errors = evaluate_target_status(h, cmd, &retry_cmd); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3036 | break; |
| 3037 | case CMD_DATA_UNDERRUN: |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3038 | if (blk_fs_request(cmd->rq)) { |
| 3039 | printk(KERN_WARNING "cciss: cmd %p has" |
| 3040 | " completed with data underrun " |
| 3041 | "reported\n", cmd); |
Tejun Heo | c3a4d78 | 2009-05-07 22:24:37 +0900 | [diff] [blame] | 3042 | cmd->rq->resid_len = cmd->err_info->ResidualCnt; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3043 | } |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3044 | break; |
| 3045 | case CMD_DATA_OVERRUN: |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3046 | if (blk_fs_request(cmd->rq)) |
| 3047 | printk(KERN_WARNING "cciss: cmd %p has" |
| 3048 | " completed with data overrun " |
| 3049 | "reported\n", cmd); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3050 | break; |
| 3051 | case CMD_INVALID: |
| 3052 | printk(KERN_WARNING "cciss: cmd %p is " |
| 3053 | "reported invalid\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3054 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3055 | cmd->err_info->CommandStatus, DRIVER_OK, |
| 3056 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3057 | break; |
| 3058 | case CMD_PROTOCOL_ERR: |
| 3059 | printk(KERN_WARNING "cciss: cmd %p has " |
| 3060 | "protocol error \n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3061 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3062 | cmd->err_info->CommandStatus, DRIVER_OK, |
| 3063 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3064 | break; |
| 3065 | case CMD_HARDWARE_ERR: |
| 3066 | printk(KERN_WARNING "cciss: cmd %p had " |
| 3067 | " hardware error\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3068 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3069 | cmd->err_info->CommandStatus, DRIVER_OK, |
| 3070 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3071 | break; |
| 3072 | case CMD_CONNECTION_LOST: |
| 3073 | printk(KERN_WARNING "cciss: cmd %p had " |
| 3074 | "connection lost\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3075 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3076 | cmd->err_info->CommandStatus, DRIVER_OK, |
| 3077 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3078 | break; |
| 3079 | case CMD_ABORTED: |
| 3080 | printk(KERN_WARNING "cciss: cmd %p was " |
| 3081 | "aborted\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3082 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3083 | cmd->err_info->CommandStatus, DRIVER_OK, |
| 3084 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ABORT); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3085 | break; |
| 3086 | case CMD_ABORT_FAILED: |
| 3087 | printk(KERN_WARNING "cciss: cmd %p reports " |
| 3088 | "abort failed\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3089 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3090 | cmd->err_info->CommandStatus, DRIVER_OK, |
| 3091 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3092 | break; |
| 3093 | case CMD_UNSOLICITED_ABORT: |
| 3094 | printk(KERN_WARNING "cciss%d: unsolicited " |
| 3095 | "abort %p\n", h->ctlr, cmd); |
| 3096 | if (cmd->retry_count < MAX_CMD_RETRIES) { |
| 3097 | retry_cmd = 1; |
| 3098 | printk(KERN_WARNING |
| 3099 | "cciss%d: retrying %p\n", h->ctlr, cmd); |
| 3100 | cmd->retry_count++; |
| 3101 | } else |
| 3102 | printk(KERN_WARNING |
| 3103 | "cciss%d: %p retried too " |
| 3104 | "many times\n", h->ctlr, cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3105 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3106 | cmd->err_info->CommandStatus, DRIVER_OK, |
| 3107 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ABORT); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3108 | break; |
| 3109 | case CMD_TIMEOUT: |
| 3110 | printk(KERN_WARNING "cciss: cmd %p timedout\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3111 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3112 | cmd->err_info->CommandStatus, DRIVER_OK, |
| 3113 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3114 | break; |
| 3115 | default: |
| 3116 | printk(KERN_WARNING "cciss: cmd %p returned " |
| 3117 | "unknown status %x\n", cmd, |
| 3118 | cmd->err_info->CommandStatus); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3119 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3120 | cmd->err_info->CommandStatus, DRIVER_OK, |
| 3121 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3122 | } |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3123 | |
| 3124 | after_error_processing: |
| 3125 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3126 | /* We need to return this command */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3127 | if (retry_cmd) { |
| 3128 | resend_cciss_cmd(h, cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3129 | return; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3130 | } |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3131 | cmd->rq->completion_data = cmd; |
Jens Axboe | a9925a0 | 2006-01-09 16:04:06 +0100 | [diff] [blame] | 3132 | blk_complete_request(cmd->rq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3133 | } |
| 3134 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3135 | /* |
| 3136 | * Get a request and submit it to the controller. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3137 | */ |
Jens Axboe | 165125e | 2007-07-24 09:28:11 +0200 | [diff] [blame] | 3138 | static void do_cciss_request(struct request_queue *q) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3139 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3140 | ctlr_info_t *h = q->queuedata; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3141 | CommandList_struct *c; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 3142 | sector_t start_blk; |
| 3143 | int seg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3144 | struct request *creq; |
| 3145 | u64bit temp64; |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3146 | struct scatterlist *tmp_sg; |
| 3147 | SGDescriptor_struct *curr_sg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3148 | drive_info_struct *drv; |
| 3149 | int i, dir; |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3150 | int sg_index = 0; |
| 3151 | int chained = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3152 | |
| 3153 | /* We call start_io here in case there is a command waiting on the |
| 3154 | * queue that has not been sent. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3155 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3156 | if (blk_queue_plugged(q)) |
| 3157 | goto startio; |
| 3158 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3159 | queue: |
Tejun Heo | 9934c8c | 2009-05-08 11:54:16 +0900 | [diff] [blame] | 3160 | creq = blk_peek_request(q); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3161 | if (!creq) |
| 3162 | goto startio; |
| 3163 | |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3164 | BUG_ON(creq->nr_phys_segments > h->maxsgentries); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3165 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3166 | if ((c = cmd_alloc(h, 1)) == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3167 | goto full; |
| 3168 | |
Tejun Heo | 9934c8c | 2009-05-08 11:54:16 +0900 | [diff] [blame] | 3169 | blk_start_request(creq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3170 | |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3171 | tmp_sg = h->scatter_list[c->cmdindex]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3172 | spin_unlock_irq(q->queue_lock); |
| 3173 | |
| 3174 | c->cmd_type = CMD_RWREQ; |
| 3175 | c->rq = creq; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3176 | |
| 3177 | /* fill in the request */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3178 | drv = creq->rq_disk->private_data; |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 3179 | c->Header.ReplyQueue = 0; /* unused in simple mode */ |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 3180 | /* got command from pool, so use the command block index instead */ |
| 3181 | /* for direct lookups. */ |
| 3182 | /* The first 2 bits are reserved for controller error reporting. */ |
| 3183 | c->Header.Tag.lower = (c->cmdindex << 3); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3184 | c->Header.Tag.lower |= 0x04; /* flag for direct lookup. */ |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 3185 | memcpy(&c->Header.LUN, drv->LunID, sizeof(drv->LunID)); |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 3186 | c->Request.CDBLen = 10; /* 12 byte commands not in FW yet; */ |
| 3187 | c->Request.Type.Type = TYPE_CMD; /* It is a command. */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3188 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 3189 | c->Request.Type.Direction = |
Mike Miller | a52de24 | 2006-12-18 11:00:14 +0100 | [diff] [blame] | 3190 | (rq_data_dir(creq) == READ) ? XFER_READ : XFER_WRITE; |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 3191 | c->Request.Timeout = 0; /* Don't time out */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3192 | c->Request.CDB[0] = |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 3193 | (rq_data_dir(creq) == READ) ? h->cciss_read : h->cciss_write; |
Tejun Heo | 83096eb | 2009-05-07 22:24:39 +0900 | [diff] [blame] | 3194 | start_blk = blk_rq_pos(creq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3195 | #ifdef CCISS_DEBUG |
Tejun Heo | 83096eb | 2009-05-07 22:24:39 +0900 | [diff] [blame] | 3196 | printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n", |
| 3197 | (int)blk_rq_pos(creq), (int)blk_rq_sectors(creq)); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3198 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3199 | |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3200 | sg_init_table(tmp_sg, h->maxsgentries); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3201 | seg = blk_rq_map_sg(q, creq, tmp_sg); |
| 3202 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3203 | /* get the DMA records for the setup */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3204 | if (c->Request.Type.Direction == XFER_READ) |
| 3205 | dir = PCI_DMA_FROMDEVICE; |
| 3206 | else |
| 3207 | dir = PCI_DMA_TODEVICE; |
| 3208 | |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3209 | curr_sg = c->SG; |
| 3210 | sg_index = 0; |
| 3211 | chained = 0; |
| 3212 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3213 | for (i = 0; i < seg; i++) { |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3214 | if (((sg_index+1) == (h->max_cmd_sgentries)) && |
| 3215 | !chained && ((seg - i) > 1)) { |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3216 | /* Point to next chain block. */ |
Stephen M. Cameron | dccc9b5 | 2010-02-26 16:01:27 -0600 | [diff] [blame] | 3217 | curr_sg = h->cmd_sg_list[c->cmdindex]; |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3218 | sg_index = 0; |
| 3219 | chained = 1; |
| 3220 | } |
| 3221 | curr_sg[sg_index].Len = tmp_sg[i].length; |
Jens Axboe | 45711f1 | 2007-10-22 21:19:53 +0200 | [diff] [blame] | 3222 | 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] | 3223 | tmp_sg[i].offset, |
| 3224 | tmp_sg[i].length, dir); |
| 3225 | curr_sg[sg_index].Addr.lower = temp64.val32.lower; |
| 3226 | curr_sg[sg_index].Addr.upper = temp64.val32.upper; |
| 3227 | curr_sg[sg_index].Ext = 0; /* we are not chaining */ |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3228 | ++sg_index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3229 | } |
Stephen M. Cameron | d45033e | 2010-02-26 16:01:37 -0600 | [diff] [blame] | 3230 | if (chained) |
| 3231 | cciss_map_sg_chain_block(h, c, h->cmd_sg_list[c->cmdindex], |
| 3232 | (seg - (h->max_cmd_sgentries - 1)) * |
| 3233 | sizeof(SGDescriptor_struct)); |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3234 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3235 | /* track how many SG entries we are using */ |
| 3236 | if (seg > h->maxSG) |
| 3237 | h->maxSG = seg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3238 | |
| 3239 | #ifdef CCISS_DEBUG |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3240 | printk(KERN_DEBUG "cciss: Submitting %ld sectors in %d segments " |
| 3241 | "chained[%d]\n", |
| 3242 | blk_rq_sectors(creq), seg, chained); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3243 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3244 | |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3245 | c->Header.SGList = c->Header.SGTotal = seg + chained; |
| 3246 | if (seg > h->max_cmd_sgentries) |
| 3247 | c->Header.SGList = h->max_cmd_sgentries; |
| 3248 | |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3249 | if (likely(blk_fs_request(creq))) { |
| 3250 | if(h->cciss_read == CCISS_READ_10) { |
| 3251 | c->Request.CDB[1] = 0; |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 3252 | c->Request.CDB[2] = (start_blk >> 24) & 0xff; /* MSB */ |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3253 | c->Request.CDB[3] = (start_blk >> 16) & 0xff; |
| 3254 | c->Request.CDB[4] = (start_blk >> 8) & 0xff; |
| 3255 | c->Request.CDB[5] = start_blk & 0xff; |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 3256 | c->Request.CDB[6] = 0; /* (sect >> 24) & 0xff; MSB */ |
Tejun Heo | 83096eb | 2009-05-07 22:24:39 +0900 | [diff] [blame] | 3257 | c->Request.CDB[7] = (blk_rq_sectors(creq) >> 8) & 0xff; |
| 3258 | c->Request.CDB[8] = blk_rq_sectors(creq) & 0xff; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3259 | c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0; |
| 3260 | } else { |
Randy Dunlap | 582539e | 2008-02-06 01:36:54 -0800 | [diff] [blame] | 3261 | u32 upper32 = upper_32_bits(start_blk); |
| 3262 | |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3263 | c->Request.CDBLen = 16; |
| 3264 | c->Request.CDB[1]= 0; |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 3265 | c->Request.CDB[2]= (upper32 >> 24) & 0xff; /* MSB */ |
Randy Dunlap | 582539e | 2008-02-06 01:36:54 -0800 | [diff] [blame] | 3266 | c->Request.CDB[3]= (upper32 >> 16) & 0xff; |
| 3267 | c->Request.CDB[4]= (upper32 >> 8) & 0xff; |
| 3268 | c->Request.CDB[5]= upper32 & 0xff; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3269 | c->Request.CDB[6]= (start_blk >> 24) & 0xff; |
| 3270 | c->Request.CDB[7]= (start_blk >> 16) & 0xff; |
| 3271 | c->Request.CDB[8]= (start_blk >> 8) & 0xff; |
| 3272 | c->Request.CDB[9]= start_blk & 0xff; |
Tejun Heo | 83096eb | 2009-05-07 22:24:39 +0900 | [diff] [blame] | 3273 | c->Request.CDB[10]= (blk_rq_sectors(creq) >> 24) & 0xff; |
| 3274 | c->Request.CDB[11]= (blk_rq_sectors(creq) >> 16) & 0xff; |
| 3275 | c->Request.CDB[12]= (blk_rq_sectors(creq) >> 8) & 0xff; |
| 3276 | c->Request.CDB[13]= blk_rq_sectors(creq) & 0xff; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3277 | c->Request.CDB[14] = c->Request.CDB[15] = 0; |
| 3278 | } |
| 3279 | } else if (blk_pc_request(creq)) { |
| 3280 | c->Request.CDBLen = creq->cmd_len; |
| 3281 | memcpy(c->Request.CDB, creq->cmd, BLK_MAX_CDB); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 3282 | } else { |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3283 | printk(KERN_WARNING "cciss%d: bad request type %d\n", h->ctlr, creq->cmd_type); |
| 3284 | BUG(); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 3285 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3286 | |
| 3287 | spin_lock_irq(q->queue_lock); |
| 3288 | |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 3289 | addQ(&h->reqQ, c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3290 | h->Qdepth++; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3291 | if (h->Qdepth > h->maxQsinceinit) |
| 3292 | h->maxQsinceinit = h->Qdepth; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3293 | |
| 3294 | goto queue; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 3295 | full: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3296 | blk_stop_queue(q); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 3297 | startio: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3298 | /* We will already have the driver lock here so not need |
| 3299 | * to lock it. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3300 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3301 | start_io(h); |
| 3302 | } |
| 3303 | |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3304 | static inline unsigned long get_next_completion(ctlr_info_t *h) |
| 3305 | { |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3306 | return h->access.command_completed(h); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3307 | } |
| 3308 | |
| 3309 | static inline int interrupt_pending(ctlr_info_t *h) |
| 3310 | { |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3311 | return h->access.intr_pending(h); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3312 | } |
| 3313 | |
| 3314 | static inline long interrupt_not_for_us(ctlr_info_t *h) |
| 3315 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3316 | return (((h->access.intr_pending(h) == 0) || |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3317 | (h->interrupts_enabled == 0))); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3318 | } |
| 3319 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 3320 | static irqreturn_t do_cciss_intr(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3321 | { |
| 3322 | ctlr_info_t *h = dev_id; |
| 3323 | CommandList_struct *c; |
| 3324 | unsigned long flags; |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 3325 | __u32 a, a1, a2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3326 | |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3327 | if (interrupt_not_for_us(h)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3328 | return IRQ_NONE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3329 | /* |
| 3330 | * If there are completed commands in the completion queue, |
| 3331 | * we had better do something about it. |
| 3332 | */ |
| 3333 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3334 | while (interrupt_pending(h)) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3335 | while ((a = get_next_completion(h)) != FIFO_EMPTY) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3336 | a1 = a; |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 3337 | if ((a & 0x04)) { |
| 3338 | a2 = (a >> 3); |
Mike Miller | f880632 | 2006-12-06 20:35:01 -0800 | [diff] [blame] | 3339 | if (a2 >= h->nr_cmds) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3340 | printk(KERN_WARNING |
| 3341 | "cciss: controller cciss%d failed, stopping.\n", |
| 3342 | h->ctlr); |
Dan Carpenter | 829f46a | 2010-04-06 14:34:50 -0700 | [diff] [blame] | 3343 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 3344 | fail_all_cmds(h->ctlr); |
| 3345 | return IRQ_HANDLED; |
| 3346 | } |
| 3347 | |
| 3348 | c = h->cmd_pool + a2; |
| 3349 | a = c->busaddr; |
| 3350 | |
| 3351 | } else { |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 3352 | struct hlist_node *tmp; |
| 3353 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3354 | a &= ~3; |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 3355 | c = NULL; |
| 3356 | hlist_for_each_entry(c, tmp, &h->cmpQ, list) { |
| 3357 | if (c->busaddr == a) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3358 | break; |
| 3359 | } |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 3360 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3361 | /* |
| 3362 | * If we've found the command, take it off the |
| 3363 | * completion Q and free it |
| 3364 | */ |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 3365 | if (c && c->busaddr == a) { |
| 3366 | removeQ(c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3367 | if (c->cmd_type == CMD_RWREQ) { |
| 3368 | complete_command(h, c, 0); |
| 3369 | } else if (c->cmd_type == CMD_IOCTL_PEND) { |
| 3370 | complete(c->waiting); |
| 3371 | } |
| 3372 | # ifdef CONFIG_CISS_SCSI_TAPE |
| 3373 | else if (c->cmd_type == CMD_SCSI) |
| 3374 | complete_scsi_command(c, 0, a1); |
| 3375 | # endif |
| 3376 | continue; |
| 3377 | } |
| 3378 | } |
| 3379 | } |
| 3380 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3381 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
| 3382 | return IRQ_HANDLED; |
| 3383 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3384 | |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3385 | /** |
| 3386 | * add_to_scan_list() - add controller to rescan queue |
| 3387 | * @h: Pointer to the controller. |
| 3388 | * |
| 3389 | * Adds the controller to the rescan queue if not already on the queue. |
| 3390 | * |
| 3391 | * returns 1 if added to the queue, 0 if skipped (could be on the |
| 3392 | * queue already, or the controller could be initializing or shutting |
| 3393 | * down). |
| 3394 | **/ |
| 3395 | static int add_to_scan_list(struct ctlr_info *h) |
| 3396 | { |
| 3397 | struct ctlr_info *test_h; |
| 3398 | int found = 0; |
| 3399 | int ret = 0; |
| 3400 | |
| 3401 | if (h->busy_initializing) |
| 3402 | return 0; |
| 3403 | |
| 3404 | if (!mutex_trylock(&h->busy_shutting_down)) |
| 3405 | return 0; |
| 3406 | |
| 3407 | mutex_lock(&scan_mutex); |
| 3408 | list_for_each_entry(test_h, &scan_q, scan_list) { |
| 3409 | if (test_h == h) { |
| 3410 | found = 1; |
| 3411 | break; |
| 3412 | } |
| 3413 | } |
| 3414 | if (!found && !h->busy_scanning) { |
| 3415 | INIT_COMPLETION(h->scan_wait); |
| 3416 | list_add_tail(&h->scan_list, &scan_q); |
| 3417 | ret = 1; |
| 3418 | } |
| 3419 | mutex_unlock(&scan_mutex); |
| 3420 | mutex_unlock(&h->busy_shutting_down); |
| 3421 | |
| 3422 | return ret; |
| 3423 | } |
| 3424 | |
| 3425 | /** |
| 3426 | * remove_from_scan_list() - remove controller from rescan queue |
| 3427 | * @h: Pointer to the controller. |
| 3428 | * |
| 3429 | * Removes the controller from the rescan queue if present. Blocks if |
Stephen M. Cameron | fd8489c | 2009-11-12 12:49:19 -0600 | [diff] [blame] | 3430 | * the controller is currently conducting a rescan. The controller |
| 3431 | * can be in one of three states: |
| 3432 | * 1. Doesn't need a scan |
| 3433 | * 2. On the scan list, but not scanning yet (we remove it) |
| 3434 | * 3. Busy scanning (and not on the list). In this case we want to wait for |
| 3435 | * the scan to complete to make sure the scanning thread for this |
| 3436 | * controller is completely idle. |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3437 | **/ |
| 3438 | static void remove_from_scan_list(struct ctlr_info *h) |
| 3439 | { |
| 3440 | struct ctlr_info *test_h, *tmp_h; |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3441 | |
| 3442 | mutex_lock(&scan_mutex); |
| 3443 | 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] | 3444 | if (test_h == h) { /* state 2. */ |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3445 | list_del(&h->scan_list); |
| 3446 | complete_all(&h->scan_wait); |
| 3447 | mutex_unlock(&scan_mutex); |
| 3448 | return; |
| 3449 | } |
| 3450 | } |
Stephen M. Cameron | fd8489c | 2009-11-12 12:49:19 -0600 | [diff] [blame] | 3451 | if (h->busy_scanning) { /* state 3. */ |
| 3452 | mutex_unlock(&scan_mutex); |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3453 | wait_for_completion(&h->scan_wait); |
Stephen M. Cameron | fd8489c | 2009-11-12 12:49:19 -0600 | [diff] [blame] | 3454 | } else { /* state 1, nothing to do. */ |
| 3455 | mutex_unlock(&scan_mutex); |
| 3456 | } |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3457 | } |
| 3458 | |
| 3459 | /** |
| 3460 | * scan_thread() - kernel thread used to rescan controllers |
| 3461 | * @data: Ignored. |
| 3462 | * |
| 3463 | * A kernel thread used scan for drive topology changes on |
| 3464 | * controllers. The thread processes only one controller at a time |
| 3465 | * using a queue. Controllers are added to the queue using |
| 3466 | * add_to_scan_list() and removed from the queue either after done |
| 3467 | * processing or using remove_from_scan_list(). |
| 3468 | * |
| 3469 | * returns 0. |
| 3470 | **/ |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3471 | static int scan_thread(void *data) |
| 3472 | { |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3473 | struct ctlr_info *h; |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3474 | |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3475 | while (1) { |
| 3476 | set_current_state(TASK_INTERRUPTIBLE); |
| 3477 | schedule(); |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3478 | if (kthread_should_stop()) |
| 3479 | break; |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3480 | |
| 3481 | while (1) { |
| 3482 | mutex_lock(&scan_mutex); |
| 3483 | if (list_empty(&scan_q)) { |
| 3484 | mutex_unlock(&scan_mutex); |
| 3485 | break; |
| 3486 | } |
| 3487 | |
| 3488 | h = list_entry(scan_q.next, |
| 3489 | struct ctlr_info, |
| 3490 | scan_list); |
| 3491 | list_del(&h->scan_list); |
| 3492 | h->busy_scanning = 1; |
| 3493 | mutex_unlock(&scan_mutex); |
| 3494 | |
Stephen M. Cameron | d06dfbd | 2009-11-12 12:49:50 -0600 | [diff] [blame] | 3495 | rebuild_lun_table(h, 0, 0); |
| 3496 | complete_all(&h->scan_wait); |
| 3497 | mutex_lock(&scan_mutex); |
| 3498 | h->busy_scanning = 0; |
| 3499 | mutex_unlock(&scan_mutex); |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3500 | } |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3501 | } |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3502 | |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3503 | return 0; |
| 3504 | } |
| 3505 | |
| 3506 | static int check_for_unit_attention(ctlr_info_t *h, CommandList_struct *c) |
| 3507 | { |
| 3508 | if (c->err_info->SenseInfo[2] != UNIT_ATTENTION) |
| 3509 | return 0; |
| 3510 | |
| 3511 | switch (c->err_info->SenseInfo[12]) { |
| 3512 | case STATE_CHANGED: |
| 3513 | printk(KERN_WARNING "cciss%d: a state change " |
| 3514 | "detected, command retried\n", h->ctlr); |
| 3515 | return 1; |
| 3516 | break; |
| 3517 | case LUN_FAILED: |
| 3518 | printk(KERN_WARNING "cciss%d: LUN failure " |
| 3519 | "detected, action required\n", h->ctlr); |
| 3520 | return 1; |
| 3521 | break; |
| 3522 | case REPORT_LUNS_CHANGED: |
| 3523 | printk(KERN_WARNING "cciss%d: report LUN data " |
| 3524 | "changed\n", h->ctlr); |
Stephen M. Cameron | da00218 | 2009-11-12 12:49:55 -0600 | [diff] [blame] | 3525 | /* |
| 3526 | * Here, we could call add_to_scan_list and wake up the scan thread, |
| 3527 | * except that it's quite likely that we will get more than one |
| 3528 | * REPORT_LUNS_CHANGED condition in quick succession, which means |
| 3529 | * that those which occur after the first one will likely happen |
| 3530 | * *during* the scan_thread's rescan. And the rescan code is not |
| 3531 | * robust enough to restart in the middle, undoing what it has already |
| 3532 | * done, and it's not clear that it's even possible to do this, since |
| 3533 | * part of what it does is notify the block layer, which starts |
| 3534 | * doing it's own i/o to read partition tables and so on, and the |
| 3535 | * driver doesn't have visibility to know what might need undoing. |
| 3536 | * In any event, if possible, it is horribly complicated to get right |
| 3537 | * so we just don't do it for now. |
| 3538 | * |
| 3539 | * Note: this REPORT_LUNS_CHANGED condition only occurs on the MSA2012. |
| 3540 | */ |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3541 | return 1; |
| 3542 | break; |
| 3543 | case POWER_OR_RESET: |
| 3544 | printk(KERN_WARNING "cciss%d: a power on " |
| 3545 | "or device reset detected\n", h->ctlr); |
| 3546 | return 1; |
| 3547 | break; |
| 3548 | case UNIT_ATTENTION_CLEARED: |
| 3549 | printk(KERN_WARNING "cciss%d: unit attention " |
| 3550 | "cleared by another initiator\n", h->ctlr); |
| 3551 | return 1; |
| 3552 | break; |
| 3553 | default: |
| 3554 | printk(KERN_WARNING "cciss%d: unknown " |
| 3555 | "unit attention detected\n", h->ctlr); |
| 3556 | return 1; |
| 3557 | } |
| 3558 | } |
| 3559 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3560 | /* |
Bjorn Helgaas | d14c4ab | 2006-06-25 05:49:04 -0700 | [diff] [blame] | 3561 | * We cannot read the structure directly, for portability we must use |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3562 | * the io functions. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3563 | * This is for debug only. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3564 | */ |
| 3565 | #ifdef CCISS_DEBUG |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3566 | static void print_cfg_table(CfgTable_struct *tb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3567 | { |
| 3568 | int i; |
| 3569 | char temp_name[17]; |
| 3570 | |
| 3571 | printk("Controller Configuration information\n"); |
| 3572 | printk("------------------------------------\n"); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3573 | for (i = 0; i < 4; i++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3574 | temp_name[i] = readb(&(tb->Signature[i])); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3575 | temp_name[4] = '\0'; |
| 3576 | printk(" Signature = %s\n", temp_name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3577 | printk(" Spec Number = %d\n", readl(&(tb->SpecValence))); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3578 | printk(" Transport methods supported = 0x%x\n", |
| 3579 | readl(&(tb->TransportSupport))); |
| 3580 | printk(" Transport methods active = 0x%x\n", |
| 3581 | readl(&(tb->TransportActive))); |
| 3582 | printk(" Requested transport Method = 0x%x\n", |
| 3583 | readl(&(tb->HostWrite.TransportRequest))); |
Bjorn Helgaas | d14c4ab | 2006-06-25 05:49:04 -0700 | [diff] [blame] | 3584 | printk(" Coalesce Interrupt Delay = 0x%x\n", |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3585 | readl(&(tb->HostWrite.CoalIntDelay))); |
Bjorn Helgaas | d14c4ab | 2006-06-25 05:49:04 -0700 | [diff] [blame] | 3586 | printk(" Coalesce Interrupt Count = 0x%x\n", |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3587 | readl(&(tb->HostWrite.CoalIntCount))); |
| 3588 | printk(" Max outstanding commands = 0x%d\n", |
| 3589 | readl(&(tb->CmdsOutMax))); |
| 3590 | printk(" Bus Types = 0x%x\n", readl(&(tb->BusTypes))); |
| 3591 | for (i = 0; i < 16; i++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3592 | temp_name[i] = readb(&(tb->ServerName[i])); |
| 3593 | temp_name[16] = '\0'; |
| 3594 | printk(" Server Name = %s\n", temp_name); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3595 | printk(" Heartbeat Counter = 0x%x\n\n\n", readl(&(tb->HeartBeat))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3596 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3597 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3598 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3599 | 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] | 3600 | { |
| 3601 | int i, offset, mem_type, bar_type; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3602 | if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3603 | return 0; |
| 3604 | offset = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3605 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { |
| 3606 | bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3607 | if (bar_type == PCI_BASE_ADDRESS_SPACE_IO) |
| 3608 | offset += 4; |
| 3609 | else { |
| 3610 | mem_type = pci_resource_flags(pdev, i) & |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3611 | PCI_BASE_ADDRESS_MEM_TYPE_MASK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3612 | switch (mem_type) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3613 | case PCI_BASE_ADDRESS_MEM_TYPE_32: |
| 3614 | case PCI_BASE_ADDRESS_MEM_TYPE_1M: |
| 3615 | offset += 4; /* 32 bit */ |
| 3616 | break; |
| 3617 | case PCI_BASE_ADDRESS_MEM_TYPE_64: |
| 3618 | offset += 8; |
| 3619 | break; |
| 3620 | default: /* reserved in PCI 2.2 */ |
| 3621 | printk(KERN_WARNING |
| 3622 | "Base address is invalid\n"); |
| 3623 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3624 | break; |
| 3625 | } |
| 3626 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3627 | if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0) |
| 3628 | return i + 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3629 | } |
| 3630 | return -1; |
| 3631 | } |
| 3632 | |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3633 | /* If MSI/MSI-X is supported by the kernel we will try to enable it on |
| 3634 | * controllers that are capable. If not, we use IO-APIC mode. |
| 3635 | */ |
| 3636 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3637 | static void __devinit cciss_interrupt_mode(ctlr_info_t *c, |
| 3638 | struct pci_dev *pdev, __u32 board_id) |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3639 | { |
| 3640 | #ifdef CONFIG_PCI_MSI |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3641 | int err; |
| 3642 | struct msix_entry cciss_msix_entries[4] = { {0, 0}, {0, 1}, |
| 3643 | {0, 2}, {0, 3} |
| 3644 | }; |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3645 | |
| 3646 | /* Some boards advertise MSI but don't really support it */ |
| 3647 | if ((board_id == 0x40700E11) || |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3648 | (board_id == 0x40800E11) || |
| 3649 | (board_id == 0x40820E11) || (board_id == 0x40830E11)) |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3650 | goto default_int_mode; |
| 3651 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3652 | if (pci_find_capability(pdev, PCI_CAP_ID_MSIX)) { |
| 3653 | err = pci_enable_msix(pdev, cciss_msix_entries, 4); |
| 3654 | if (!err) { |
| 3655 | c->intr[0] = cciss_msix_entries[0].vector; |
| 3656 | c->intr[1] = cciss_msix_entries[1].vector; |
| 3657 | c->intr[2] = cciss_msix_entries[2].vector; |
| 3658 | c->intr[3] = cciss_msix_entries[3].vector; |
| 3659 | c->msix_vector = 1; |
| 3660 | return; |
| 3661 | } |
| 3662 | if (err > 0) { |
| 3663 | printk(KERN_WARNING "cciss: only %d MSI-X vectors " |
| 3664 | "available\n", err); |
Mike Miller | 1ecb9c0 | 2006-12-06 20:35:13 -0800 | [diff] [blame] | 3665 | goto default_int_mode; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3666 | } else { |
| 3667 | printk(KERN_WARNING "cciss: MSI-X init failed %d\n", |
| 3668 | err); |
Mike Miller | 1ecb9c0 | 2006-12-06 20:35:13 -0800 | [diff] [blame] | 3669 | goto default_int_mode; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3670 | } |
| 3671 | } |
| 3672 | if (pci_find_capability(pdev, PCI_CAP_ID_MSI)) { |
| 3673 | if (!pci_enable_msi(pdev)) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3674 | c->msi_vector = 1; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3675 | } else { |
| 3676 | printk(KERN_WARNING "cciss: MSI init failed\n"); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3677 | } |
| 3678 | } |
Mike Miller | 1ecb9c0 | 2006-12-06 20:35:13 -0800 | [diff] [blame] | 3679 | default_int_mode: |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3680 | #endif /* CONFIG_PCI_MSI */ |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3681 | /* if we get here we're going to use the default interrupt mode */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3682 | c->intr[SIMPLE_MODE_INT] = pdev->irq; |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3683 | return; |
| 3684 | } |
| 3685 | |
Randy Dunlap | 7d1fd97 | 2008-01-14 00:55:17 -0800 | [diff] [blame] | 3686 | static int __devinit cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3687 | { |
| 3688 | ushort subsystem_vendor_id, subsystem_device_id, command; |
| 3689 | __u32 board_id, scratchpad = 0; |
| 3690 | __u64 cfg_offset; |
| 3691 | __u32 cfg_base_addr; |
| 3692 | __u64 cfg_base_addr_index; |
Stephen M. Cameron | 2ec24ff | 2009-10-13 09:18:22 +0200 | [diff] [blame] | 3693 | int i, prod_index, err; |
| 3694 | |
| 3695 | subsystem_vendor_id = pdev->subsystem_vendor; |
| 3696 | subsystem_device_id = pdev->subsystem_device; |
| 3697 | board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) | |
| 3698 | subsystem_vendor_id); |
| 3699 | |
| 3700 | for (i = 0; i < ARRAY_SIZE(products); i++) { |
| 3701 | /* Stand aside for hpsa driver on request */ |
| 3702 | if (cciss_allow_hpsa && products[i].board_id == HPSA_BOUNDARY) |
| 3703 | return -ENODEV; |
| 3704 | if (board_id == products[i].board_id) |
| 3705 | break; |
| 3706 | } |
| 3707 | prod_index = i; |
| 3708 | if (prod_index == ARRAY_SIZE(products)) { |
| 3709 | dev_warn(&pdev->dev, |
| 3710 | "unrecognized board ID: 0x%08lx, ignoring.\n", |
| 3711 | (unsigned long) board_id); |
| 3712 | return -ENODEV; |
| 3713 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3714 | |
| 3715 | /* check to see if controller has been disabled */ |
| 3716 | /* BEFORE trying to enable it */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3717 | (void)pci_read_config_word(pdev, PCI_COMMAND, &command); |
| 3718 | if (!(command & 0x02)) { |
| 3719 | printk(KERN_WARNING |
| 3720 | "cciss: controller appears to be disabled\n"); |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 3721 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3722 | } |
| 3723 | |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 3724 | err = pci_enable_device(pdev); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3725 | if (err) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3726 | printk(KERN_ERR "cciss: Unable to Enable PCI device\n"); |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 3727 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3728 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3729 | |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 3730 | err = pci_request_regions(pdev, "cciss"); |
| 3731 | if (err) { |
| 3732 | printk(KERN_ERR "cciss: Cannot obtain PCI resources, " |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3733 | "aborting\n"); |
Mike Miller | 872225c | 2006-12-13 00:34:22 -0800 | [diff] [blame] | 3734 | return err; |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 3735 | } |
| 3736 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3737 | #ifdef CCISS_DEBUG |
| 3738 | printk("command = %x\n", command); |
| 3739 | printk("irq = %x\n", pdev->irq); |
| 3740 | printk("board_id = %x\n", board_id); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3741 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3742 | |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3743 | /* If the kernel supports MSI/MSI-X we will try to enable that functionality, |
| 3744 | * else we use the IO-APIC interrupt assigned to us by system ROM. |
| 3745 | */ |
| 3746 | cciss_interrupt_mode(c, pdev, board_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3747 | |
Mike Miller | e143858 | 2009-04-02 12:50:56 -0700 | [diff] [blame] | 3748 | /* find the memory BAR */ |
| 3749 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { |
| 3750 | if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) |
| 3751 | break; |
| 3752 | } |
| 3753 | if (i == DEVICE_COUNT_RESOURCE) { |
| 3754 | printk(KERN_WARNING "cciss: No memory BAR found\n"); |
| 3755 | err = -ENODEV; |
| 3756 | goto err_out_free_res; |
| 3757 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3758 | |
Mike Miller | e143858 | 2009-04-02 12:50:56 -0700 | [diff] [blame] | 3759 | c->paddr = pci_resource_start(pdev, i); /* addressing mode bits |
| 3760 | * already removed |
| 3761 | */ |
| 3762 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3763 | #ifdef CCISS_DEBUG |
Randy Dunlap | 9f92f47 | 2008-11-19 15:36:51 -0800 | [diff] [blame] | 3764 | printk("address 0 = %lx\n", c->paddr); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3765 | #endif /* CCISS_DEBUG */ |
Mike Miller | a5b9287 | 2006-12-13 00:34:21 -0800 | [diff] [blame] | 3766 | c->vaddr = remap_pci_mem(c->paddr, 0x250); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3767 | |
| 3768 | /* Wait for the board to become ready. (PCI hotplug needs this.) |
| 3769 | * We poll for up to 120 secs, once per 100ms. */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3770 | for (i = 0; i < 1200; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3771 | scratchpad = readl(c->vaddr + SA5_SCRATCHPAD_OFFSET); |
| 3772 | if (scratchpad == CCISS_FIRMWARE_READY) |
| 3773 | break; |
| 3774 | set_current_state(TASK_INTERRUPTIBLE); |
Randy Dunlap | 4d76160 | 2009-09-18 12:58:48 -0700 | [diff] [blame] | 3775 | schedule_timeout(msecs_to_jiffies(100)); /* wait 100ms */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3776 | } |
| 3777 | if (scratchpad != CCISS_FIRMWARE_READY) { |
| 3778 | printk(KERN_WARNING "cciss: Board not ready. Timed out.\n"); |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 3779 | err = -ENODEV; |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 3780 | goto err_out_free_res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3781 | } |
| 3782 | |
| 3783 | /* get the address index number */ |
| 3784 | cfg_base_addr = readl(c->vaddr + SA5_CTCFG_OFFSET); |
| 3785 | cfg_base_addr &= (__u32) 0x0000ffff; |
| 3786 | #ifdef CCISS_DEBUG |
| 3787 | printk("cfg base address = %x\n", cfg_base_addr); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3788 | #endif /* CCISS_DEBUG */ |
| 3789 | cfg_base_addr_index = find_PCI_BAR_index(pdev, cfg_base_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3790 | #ifdef CCISS_DEBUG |
Randy Dunlap | 9f92f47 | 2008-11-19 15:36:51 -0800 | [diff] [blame] | 3791 | printk("cfg base address index = %llx\n", |
| 3792 | (unsigned long long)cfg_base_addr_index); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3793 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3794 | if (cfg_base_addr_index == -1) { |
| 3795 | printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n"); |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 3796 | err = -ENODEV; |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 3797 | goto err_out_free_res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3798 | } |
| 3799 | |
| 3800 | cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET); |
| 3801 | #ifdef CCISS_DEBUG |
Randy Dunlap | 9f92f47 | 2008-11-19 15:36:51 -0800 | [diff] [blame] | 3802 | printk("cfg offset = %llx\n", (unsigned long long)cfg_offset); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3803 | #endif /* CCISS_DEBUG */ |
| 3804 | c->cfgtable = remap_pci_mem(pci_resource_start(pdev, |
| 3805 | cfg_base_addr_index) + |
| 3806 | cfg_offset, sizeof(CfgTable_struct)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3807 | c->board_id = board_id; |
| 3808 | |
| 3809 | #ifdef CCISS_DEBUG |
Tobias Klauser | 945f390 | 2006-01-08 01:05:11 -0800 | [diff] [blame] | 3810 | print_cfg_table(c->cfgtable); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3811 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3812 | |
Mike Miller | 4915399 | 2008-07-04 10:00:02 -0700 | [diff] [blame] | 3813 | /* Some controllers support Zero Memory Raid (ZMR). |
| 3814 | * When configured in ZMR mode the number of supported |
| 3815 | * commands drops to 64. So instead of just setting an |
| 3816 | * arbitrary value we make the driver a little smarter. |
| 3817 | * We read the config table to tell us how many commands |
| 3818 | * are supported on the controller then subtract 4 to |
| 3819 | * leave a little room for ioctl calls. |
| 3820 | */ |
| 3821 | c->max_commands = readl(&(c->cfgtable->CmdsOutMax)); |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3822 | c->maxsgentries = readl(&(c->cfgtable->MaxSGElements)); |
| 3823 | |
| 3824 | /* |
| 3825 | * Limit native command to 32 s/g elements to save dma'able memory. |
| 3826 | * Howvever spec says if 0, use 31 |
| 3827 | */ |
| 3828 | |
| 3829 | c->max_cmd_sgentries = 31; |
| 3830 | if (c->maxsgentries > 512) { |
| 3831 | c->max_cmd_sgentries = 32; |
| 3832 | c->chainsize = c->maxsgentries - c->max_cmd_sgentries + 1; |
| 3833 | c->maxsgentries -= 1; /* account for chain pointer */ |
| 3834 | } else { |
| 3835 | c->maxsgentries = 31; /* Default to traditional value */ |
| 3836 | c->chainsize = 0; /* traditional */ |
| 3837 | } |
| 3838 | |
Stephen M. Cameron | 2ec24ff | 2009-10-13 09:18:22 +0200 | [diff] [blame] | 3839 | c->product_name = products[prod_index].product_name; |
| 3840 | c->access = *(products[prod_index].access); |
| 3841 | c->nr_cmds = c->max_commands - 4; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3842 | if ((readb(&c->cfgtable->Signature[0]) != 'C') || |
| 3843 | (readb(&c->cfgtable->Signature[1]) != 'I') || |
| 3844 | (readb(&c->cfgtable->Signature[2]) != 'S') || |
| 3845 | (readb(&c->cfgtable->Signature[3]) != 'S')) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3846 | printk("Does not appear to be a valid CISS config table\n"); |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 3847 | err = -ENODEV; |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 3848 | goto err_out_free_res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3849 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3850 | #ifdef CONFIG_X86 |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3851 | { |
| 3852 | /* Need to enable prefetch in the SCSI core for 6400 in x86 */ |
| 3853 | __u32 prefetch; |
| 3854 | prefetch = readl(&(c->cfgtable->SCSI_Prefetch)); |
| 3855 | prefetch |= 0x100; |
| 3856 | writel(prefetch, &(c->cfgtable->SCSI_Prefetch)); |
| 3857 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3858 | #endif |
| 3859 | |
Mike Miller (OS Dev) | 8bf50f7 | 2007-10-17 10:10:04 +0200 | [diff] [blame] | 3860 | /* Disabling DMA prefetch and refetch for the P600. |
| 3861 | * An ASIC bug may result in accesses to invalid memory addresses. |
| 3862 | * We've disabled prefetch for some time now. Testing with XEN |
| 3863 | * kernels revealed a bug in the refetch if dom0 resides on a P600. |
Mike Miller | f92e2f5 | 2006-12-06 20:35:04 -0800 | [diff] [blame] | 3864 | */ |
| 3865 | if(board_id == 0x3225103C) { |
| 3866 | __u32 dma_prefetch; |
Mike Miller (OS Dev) | 8bf50f7 | 2007-10-17 10:10:04 +0200 | [diff] [blame] | 3867 | __u32 dma_refetch; |
Mike Miller | f92e2f5 | 2006-12-06 20:35:04 -0800 | [diff] [blame] | 3868 | dma_prefetch = readl(c->vaddr + I2O_DMA1_CFG); |
| 3869 | dma_prefetch |= 0x8000; |
| 3870 | writel(dma_prefetch, c->vaddr + I2O_DMA1_CFG); |
Mike Miller (OS Dev) | 8bf50f7 | 2007-10-17 10:10:04 +0200 | [diff] [blame] | 3871 | pci_read_config_dword(pdev, PCI_COMMAND_PARITY, &dma_refetch); |
| 3872 | dma_refetch |= 0x1; |
| 3873 | pci_write_config_dword(pdev, PCI_COMMAND_PARITY, dma_refetch); |
Mike Miller | f92e2f5 | 2006-12-06 20:35:04 -0800 | [diff] [blame] | 3874 | } |
| 3875 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3876 | #ifdef CCISS_DEBUG |
| 3877 | printk("Trying to put board into Simple mode\n"); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3878 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3879 | c->max_commands = readl(&(c->cfgtable->CmdsOutMax)); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3880 | /* Update the field, and then ring the doorbell */ |
| 3881 | writel(CFGTBL_Trans_Simple, &(c->cfgtable->HostWrite.TransportRequest)); |
| 3882 | writel(CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3883 | |
| 3884 | /* under certain very rare conditions, this can take awhile. |
| 3885 | * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right |
| 3886 | * as we enter this code.) */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3887 | for (i = 0; i < MAX_CONFIG_WAIT; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3888 | if (!(readl(c->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq)) |
| 3889 | break; |
| 3890 | /* delay and try again */ |
| 3891 | set_current_state(TASK_INTERRUPTIBLE); |
Randy Dunlap | 4d76160 | 2009-09-18 12:58:48 -0700 | [diff] [blame] | 3892 | schedule_timeout(msecs_to_jiffies(1)); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3893 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3894 | |
| 3895 | #ifdef CCISS_DEBUG |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3896 | printk(KERN_DEBUG "I counter got to %d %x\n", i, |
| 3897 | readl(c->vaddr + SA5_DOORBELL)); |
| 3898 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3899 | #ifdef CCISS_DEBUG |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3900 | print_cfg_table(c->cfgtable); |
| 3901 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3902 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3903 | if (!(readl(&(c->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3904 | printk(KERN_WARNING "cciss: unable to get board into" |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3905 | " simple mode\n"); |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 3906 | err = -ENODEV; |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 3907 | goto err_out_free_res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3908 | } |
| 3909 | return 0; |
| 3910 | |
Linus Torvalds | 5faad62 | 2006-12-13 09:15:34 -0800 | [diff] [blame] | 3911 | err_out_free_res: |
Mike Miller | 872225c | 2006-12-13 00:34:22 -0800 | [diff] [blame] | 3912 | /* |
| 3913 | * Deliberately omit pci_disable_device(): it does something nasty to |
| 3914 | * Smart Array controllers that pci_enable_device does not undo |
| 3915 | */ |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 3916 | pci_release_regions(pdev); |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 3917 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3918 | } |
| 3919 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 3920 | /* Function to find the first free pointer into our hba[] array |
| 3921 | * Returns -1 if no free entries are left. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3922 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3923 | static int alloc_cciss_hba(void) |
| 3924 | { |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 3925 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3926 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3927 | for (i = 0; i < MAX_CTLR; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3928 | if (!hba[i]) { |
| 3929 | ctlr_info_t *p; |
Jesper Juhl | f2912a1 | 2007-07-31 00:39:39 -0700 | [diff] [blame] | 3930 | |
Eric Sesterhenn | 06ff37f | 2006-03-08 11:21:52 +0100 | [diff] [blame] | 3931 | p = kzalloc(sizeof(ctlr_info_t), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3932 | if (!p) |
| 3933 | goto Enomem; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3934 | hba[i] = p; |
| 3935 | return i; |
| 3936 | } |
| 3937 | } |
| 3938 | printk(KERN_WARNING "cciss: This driver supports a maximum" |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3939 | " of %d controllers.\n", MAX_CTLR); |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 3940 | return -1; |
| 3941 | Enomem: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3942 | printk(KERN_ERR "cciss: out of memory.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3943 | return -1; |
| 3944 | } |
| 3945 | |
Stephen M. Cameron | 2c93559 | 2009-09-17 13:47:50 -0500 | [diff] [blame] | 3946 | static void free_hba(int n) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3947 | { |
Stephen M. Cameron | 2c93559 | 2009-09-17 13:47:50 -0500 | [diff] [blame] | 3948 | ctlr_info_t *h = hba[n]; |
| 3949 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3950 | |
Stephen M. Cameron | 2c93559 | 2009-09-17 13:47:50 -0500 | [diff] [blame] | 3951 | hba[n] = NULL; |
| 3952 | for (i = 0; i < h->highest_lun + 1; i++) |
| 3953 | if (h->gendisk[i] != NULL) |
| 3954 | put_disk(h->gendisk[i]); |
| 3955 | kfree(h); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3956 | } |
| 3957 | |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 3958 | /* Send a message CDB to the firmware. */ |
| 3959 | static __devinit int cciss_message(struct pci_dev *pdev, unsigned char opcode, unsigned char type) |
| 3960 | { |
| 3961 | typedef struct { |
| 3962 | CommandListHeader_struct CommandHeader; |
| 3963 | RequestBlock_struct Request; |
| 3964 | ErrDescriptor_struct ErrorDescriptor; |
| 3965 | } Command; |
| 3966 | static const size_t cmd_sz = sizeof(Command) + sizeof(ErrorInfo_struct); |
| 3967 | Command *cmd; |
| 3968 | dma_addr_t paddr64; |
| 3969 | uint32_t paddr32, tag; |
| 3970 | void __iomem *vaddr; |
| 3971 | int i, err; |
| 3972 | |
| 3973 | vaddr = ioremap_nocache(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); |
| 3974 | if (vaddr == NULL) |
| 3975 | return -ENOMEM; |
| 3976 | |
| 3977 | /* The Inbound Post Queue only accepts 32-bit physical addresses for the |
| 3978 | CCISS commands, so they must be allocated from the lower 4GiB of |
| 3979 | memory. */ |
Yang Hongyang | e930438 | 2009-04-13 14:40:14 -0700 | [diff] [blame] | 3980 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 3981 | if (err) { |
| 3982 | iounmap(vaddr); |
| 3983 | return -ENOMEM; |
| 3984 | } |
| 3985 | |
| 3986 | cmd = pci_alloc_consistent(pdev, cmd_sz, &paddr64); |
| 3987 | if (cmd == NULL) { |
| 3988 | iounmap(vaddr); |
| 3989 | return -ENOMEM; |
| 3990 | } |
| 3991 | |
| 3992 | /* This must fit, because of the 32-bit consistent DMA mask. Also, |
| 3993 | although there's no guarantee, we assume that the address is at |
| 3994 | least 4-byte aligned (most likely, it's page-aligned). */ |
| 3995 | paddr32 = paddr64; |
| 3996 | |
| 3997 | cmd->CommandHeader.ReplyQueue = 0; |
| 3998 | cmd->CommandHeader.SGList = 0; |
| 3999 | cmd->CommandHeader.SGTotal = 0; |
| 4000 | cmd->CommandHeader.Tag.lower = paddr32; |
| 4001 | cmd->CommandHeader.Tag.upper = 0; |
| 4002 | memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8); |
| 4003 | |
| 4004 | cmd->Request.CDBLen = 16; |
| 4005 | cmd->Request.Type.Type = TYPE_MSG; |
| 4006 | cmd->Request.Type.Attribute = ATTR_HEADOFQUEUE; |
| 4007 | cmd->Request.Type.Direction = XFER_NONE; |
| 4008 | cmd->Request.Timeout = 0; /* Don't time out */ |
| 4009 | cmd->Request.CDB[0] = opcode; |
| 4010 | cmd->Request.CDB[1] = type; |
| 4011 | memset(&cmd->Request.CDB[2], 0, 14); /* the rest of the CDB is reserved */ |
| 4012 | |
| 4013 | cmd->ErrorDescriptor.Addr.lower = paddr32 + sizeof(Command); |
| 4014 | cmd->ErrorDescriptor.Addr.upper = 0; |
| 4015 | cmd->ErrorDescriptor.Len = sizeof(ErrorInfo_struct); |
| 4016 | |
| 4017 | writel(paddr32, vaddr + SA5_REQUEST_PORT_OFFSET); |
| 4018 | |
| 4019 | for (i = 0; i < 10; i++) { |
| 4020 | tag = readl(vaddr + SA5_REPLY_PORT_OFFSET); |
| 4021 | if ((tag & ~3) == paddr32) |
| 4022 | break; |
| 4023 | schedule_timeout_uninterruptible(HZ); |
| 4024 | } |
| 4025 | |
| 4026 | iounmap(vaddr); |
| 4027 | |
| 4028 | /* we leak the DMA buffer here ... no choice since the controller could |
| 4029 | still complete the command. */ |
| 4030 | if (i == 10) { |
| 4031 | printk(KERN_ERR "cciss: controller message %02x:%02x timed out\n", |
| 4032 | opcode, type); |
| 4033 | return -ETIMEDOUT; |
| 4034 | } |
| 4035 | |
| 4036 | pci_free_consistent(pdev, cmd_sz, cmd, paddr64); |
| 4037 | |
| 4038 | if (tag & 2) { |
| 4039 | printk(KERN_ERR "cciss: controller message %02x:%02x failed\n", |
| 4040 | opcode, type); |
| 4041 | return -EIO; |
| 4042 | } |
| 4043 | |
| 4044 | printk(KERN_INFO "cciss: controller message %02x:%02x succeeded\n", |
| 4045 | opcode, type); |
| 4046 | return 0; |
| 4047 | } |
| 4048 | |
| 4049 | #define cciss_soft_reset_controller(p) cciss_message(p, 1, 0) |
| 4050 | #define cciss_noop(p) cciss_message(p, 3, 0) |
| 4051 | |
| 4052 | static __devinit int cciss_reset_msi(struct pci_dev *pdev) |
| 4053 | { |
| 4054 | /* the #defines are stolen from drivers/pci/msi.h. */ |
| 4055 | #define msi_control_reg(base) (base + PCI_MSI_FLAGS) |
| 4056 | #define PCI_MSIX_FLAGS_ENABLE (1 << 15) |
| 4057 | |
| 4058 | int pos; |
| 4059 | u16 control = 0; |
| 4060 | |
| 4061 | pos = pci_find_capability(pdev, PCI_CAP_ID_MSI); |
| 4062 | if (pos) { |
| 4063 | pci_read_config_word(pdev, msi_control_reg(pos), &control); |
| 4064 | if (control & PCI_MSI_FLAGS_ENABLE) { |
| 4065 | printk(KERN_INFO "cciss: resetting MSI\n"); |
| 4066 | pci_write_config_word(pdev, msi_control_reg(pos), control & ~PCI_MSI_FLAGS_ENABLE); |
| 4067 | } |
| 4068 | } |
| 4069 | |
| 4070 | pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX); |
| 4071 | if (pos) { |
| 4072 | pci_read_config_word(pdev, msi_control_reg(pos), &control); |
| 4073 | if (control & PCI_MSIX_FLAGS_ENABLE) { |
| 4074 | printk(KERN_INFO "cciss: resetting MSI-X\n"); |
| 4075 | pci_write_config_word(pdev, msi_control_reg(pos), control & ~PCI_MSIX_FLAGS_ENABLE); |
| 4076 | } |
| 4077 | } |
| 4078 | |
| 4079 | return 0; |
| 4080 | } |
| 4081 | |
| 4082 | /* This does a hard reset of the controller using PCI power management |
| 4083 | * states. */ |
| 4084 | static __devinit int cciss_hard_reset_controller(struct pci_dev *pdev) |
| 4085 | { |
| 4086 | u16 pmcsr, saved_config_space[32]; |
| 4087 | int i, pos; |
| 4088 | |
| 4089 | printk(KERN_INFO "cciss: using PCI PM to reset controller\n"); |
| 4090 | |
| 4091 | /* This is very nearly the same thing as |
| 4092 | |
| 4093 | pci_save_state(pci_dev); |
| 4094 | pci_set_power_state(pci_dev, PCI_D3hot); |
| 4095 | pci_set_power_state(pci_dev, PCI_D0); |
| 4096 | pci_restore_state(pci_dev); |
| 4097 | |
| 4098 | but we can't use these nice canned kernel routines on |
| 4099 | kexec, because they also check the MSI/MSI-X state in PCI |
| 4100 | configuration space and do the wrong thing when it is |
| 4101 | set/cleared. Also, the pci_save/restore_state functions |
| 4102 | violate the ordering requirements for restoring the |
| 4103 | configuration space from the CCISS document (see the |
| 4104 | comment below). So we roll our own .... */ |
| 4105 | |
| 4106 | for (i = 0; i < 32; i++) |
| 4107 | pci_read_config_word(pdev, 2*i, &saved_config_space[i]); |
| 4108 | |
| 4109 | pos = pci_find_capability(pdev, PCI_CAP_ID_PM); |
| 4110 | if (pos == 0) { |
| 4111 | printk(KERN_ERR "cciss_reset_controller: PCI PM not supported\n"); |
| 4112 | return -ENODEV; |
| 4113 | } |
| 4114 | |
| 4115 | /* Quoting from the Open CISS Specification: "The Power |
| 4116 | * Management Control/Status Register (CSR) controls the power |
| 4117 | * state of the device. The normal operating state is D0, |
| 4118 | * CSR=00h. The software off state is D3, CSR=03h. To reset |
| 4119 | * the controller, place the interface device in D3 then to |
| 4120 | * D0, this causes a secondary PCI reset which will reset the |
| 4121 | * controller." */ |
| 4122 | |
| 4123 | /* enter the D3hot power management state */ |
| 4124 | pci_read_config_word(pdev, pos + PCI_PM_CTRL, &pmcsr); |
| 4125 | pmcsr &= ~PCI_PM_CTRL_STATE_MASK; |
| 4126 | pmcsr |= PCI_D3hot; |
| 4127 | pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); |
| 4128 | |
| 4129 | schedule_timeout_uninterruptible(HZ >> 1); |
| 4130 | |
| 4131 | /* enter the D0 power management state */ |
| 4132 | pmcsr &= ~PCI_PM_CTRL_STATE_MASK; |
| 4133 | pmcsr |= PCI_D0; |
| 4134 | pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); |
| 4135 | |
| 4136 | schedule_timeout_uninterruptible(HZ >> 1); |
| 4137 | |
| 4138 | /* Restore the PCI configuration space. The Open CISS |
| 4139 | * Specification says, "Restore the PCI Configuration |
| 4140 | * Registers, offsets 00h through 60h. It is important to |
| 4141 | * restore the command register, 16-bits at offset 04h, |
| 4142 | * last. Do not restore the configuration status register, |
| 4143 | * 16-bits at offset 06h." Note that the offset is 2*i. */ |
| 4144 | for (i = 0; i < 32; i++) { |
| 4145 | if (i == 2 || i == 3) |
| 4146 | continue; |
| 4147 | pci_write_config_word(pdev, 2*i, saved_config_space[i]); |
| 4148 | } |
| 4149 | wmb(); |
| 4150 | pci_write_config_word(pdev, 4, saved_config_space[2]); |
| 4151 | |
| 4152 | return 0; |
| 4153 | } |
| 4154 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4155 | /* |
| 4156 | * This is it. Find all the controllers and register them. I really hate |
| 4157 | * stealing all these major device numbers. |
| 4158 | * returns the number of block devices registered. |
| 4159 | */ |
| 4160 | static int __devinit cciss_init_one(struct pci_dev *pdev, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4161 | const struct pci_device_id *ent) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4162 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4163 | int i; |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 4164 | int j = 0; |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 4165 | int k = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4166 | int rc; |
Mike Miller | 22bece0 | 2008-11-06 12:53:25 -0800 | [diff] [blame] | 4167 | int dac, return_code; |
Eric Dumazet | 212a502 | 2009-08-24 10:01:53 +0200 | [diff] [blame] | 4168 | InquiryData_struct *inq_buff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4169 | |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4170 | if (reset_devices) { |
| 4171 | /* Reset the controller with a PCI power-cycle */ |
| 4172 | if (cciss_hard_reset_controller(pdev) || cciss_reset_msi(pdev)) |
| 4173 | return -ENODEV; |
| 4174 | |
Jens Axboe | 5e18cfd | 2009-02-27 08:10:26 +0100 | [diff] [blame] | 4175 | /* Now try to get the controller to respond to a no-op. Some |
| 4176 | devices (notably the HP Smart Array 5i Controller) need |
| 4177 | up to 30 seconds to respond. */ |
Jens Axboe | 5e4c91c | 2009-02-23 08:53:35 +0100 | [diff] [blame] | 4178 | for (i=0; i<30; i++) { |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4179 | if (cciss_noop(pdev) == 0) |
| 4180 | break; |
Jens Axboe | 5e4c91c | 2009-02-23 08:53:35 +0100 | [diff] [blame] | 4181 | |
| 4182 | schedule_timeout_uninterruptible(HZ); |
| 4183 | } |
| 4184 | if (i == 30) { |
| 4185 | printk(KERN_ERR "cciss: controller seems dead\n"); |
| 4186 | return -EBUSY; |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4187 | } |
| 4188 | } |
| 4189 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4190 | i = alloc_cciss_hba(); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4191 | if (i < 0) |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 4192 | return -1; |
Mike Miller | 1f8ef38 | 2005-09-13 01:25:21 -0700 | [diff] [blame] | 4193 | |
| 4194 | hba[i]->busy_initializing = 1; |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 4195 | INIT_HLIST_HEAD(&hba[i]->cmpQ); |
| 4196 | INIT_HLIST_HEAD(&hba[i]->reqQ); |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 4197 | mutex_init(&hba[i]->busy_shutting_down); |
Mike Miller | 1f8ef38 | 2005-09-13 01:25:21 -0700 | [diff] [blame] | 4198 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4199 | if (cciss_pci_init(hba[i], pdev) != 0) |
Stephen M. Cameron | 2cfa948 | 2009-10-13 09:18:22 +0200 | [diff] [blame] | 4200 | goto clean_no_release_regions; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4201 | |
| 4202 | sprintf(hba[i]->devname, "cciss%d", i); |
| 4203 | hba[i]->ctlr = i; |
| 4204 | hba[i]->pdev = pdev; |
| 4205 | |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 4206 | init_completion(&hba[i]->scan_wait); |
| 4207 | |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4208 | if (cciss_create_hba_sysfs_entry(hba[i])) |
| 4209 | goto clean0; |
| 4210 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4211 | /* configure PCI DMA stuff */ |
Yang Hongyang | 6a35528 | 2009-04-06 19:01:13 -0700 | [diff] [blame] | 4212 | if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) |
Bjorn Helgaas | 40aabb5 | 2006-06-25 05:49:03 -0700 | [diff] [blame] | 4213 | dac = 1; |
Yang Hongyang | 284901a | 2009-04-06 19:01:15 -0700 | [diff] [blame] | 4214 | else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) |
Bjorn Helgaas | 40aabb5 | 2006-06-25 05:49:03 -0700 | [diff] [blame] | 4215 | dac = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4216 | else { |
Bjorn Helgaas | 40aabb5 | 2006-06-25 05:49:03 -0700 | [diff] [blame] | 4217 | printk(KERN_ERR "cciss: no suitable DMA available\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4218 | goto clean1; |
| 4219 | } |
| 4220 | |
| 4221 | /* |
| 4222 | * register with the major number, or get a dynamic major number |
| 4223 | * by passing 0 as argument. This is done for greater than |
| 4224 | * 8 controller support. |
| 4225 | */ |
| 4226 | if (i < MAX_CTLR_ORIG) |
Christoph Hellwig | 564de74 | 2006-01-08 01:05:17 -0800 | [diff] [blame] | 4227 | hba[i]->major = COMPAQ_CISS_MAJOR + i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4228 | rc = register_blkdev(hba[i]->major, hba[i]->devname); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4229 | if (rc == -EBUSY || rc == -EINVAL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4230 | printk(KERN_ERR |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4231 | "cciss: Unable to get major number %d for %s " |
| 4232 | "on hba %d\n", hba[i]->major, hba[i]->devname, i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4233 | goto clean1; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4234 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4235 | if (i >= MAX_CTLR_ORIG) |
| 4236 | hba[i]->major = rc; |
| 4237 | } |
| 4238 | |
| 4239 | /* make sure the board interrupts are off */ |
| 4240 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4241 | if (request_irq(hba[i]->intr[SIMPLE_MODE_INT], do_cciss_intr, |
Thomas Gleixner | 69ab391 | 2006-07-01 19:29:32 -0700 | [diff] [blame] | 4242 | IRQF_DISABLED | IRQF_SHARED, hba[i]->devname, hba[i])) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4243 | printk(KERN_ERR "cciss: Unable to get irq %d for %s\n", |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4244 | hba[i]->intr[SIMPLE_MODE_INT], hba[i]->devname); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4245 | goto clean2; |
| 4246 | } |
Bjorn Helgaas | 40aabb5 | 2006-06-25 05:49:03 -0700 | [diff] [blame] | 4247 | |
| 4248 | printk(KERN_INFO "%s: <0x%x> at PCI %s IRQ %d%s using DAC\n", |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4249 | hba[i]->devname, pdev->device, pci_name(pdev), |
| 4250 | hba[i]->intr[SIMPLE_MODE_INT], dac ? "" : " not"); |
Bjorn Helgaas | 40aabb5 | 2006-06-25 05:49:03 -0700 | [diff] [blame] | 4251 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4252 | hba[i]->cmd_pool_bits = |
Julia Lawall | 061837b | 2008-09-22 14:57:16 -0700 | [diff] [blame] | 4253 | kmalloc(DIV_ROUND_UP(hba[i]->nr_cmds, BITS_PER_LONG) |
| 4254 | * sizeof(unsigned long), GFP_KERNEL); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4255 | hba[i]->cmd_pool = (CommandList_struct *) |
| 4256 | pci_alloc_consistent(hba[i]->pdev, |
Mike Miller | f880632 | 2006-12-06 20:35:01 -0800 | [diff] [blame] | 4257 | hba[i]->nr_cmds * sizeof(CommandList_struct), |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4258 | &(hba[i]->cmd_pool_dhandle)); |
| 4259 | hba[i]->errinfo_pool = (ErrorInfo_struct *) |
| 4260 | pci_alloc_consistent(hba[i]->pdev, |
Mike Miller | f880632 | 2006-12-06 20:35:01 -0800 | [diff] [blame] | 4261 | hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4262 | &(hba[i]->errinfo_pool_dhandle)); |
| 4263 | if ((hba[i]->cmd_pool_bits == NULL) |
| 4264 | || (hba[i]->cmd_pool == NULL) |
| 4265 | || (hba[i]->errinfo_pool == NULL)) { |
| 4266 | printk(KERN_ERR "cciss: out of memory"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4267 | goto clean4; |
| 4268 | } |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 4269 | |
| 4270 | /* Need space for temp scatter list */ |
| 4271 | hba[i]->scatter_list = kmalloc(hba[i]->max_commands * |
| 4272 | sizeof(struct scatterlist *), |
| 4273 | GFP_KERNEL); |
| 4274 | for (k = 0; k < hba[i]->nr_cmds; k++) { |
| 4275 | hba[i]->scatter_list[k] = kmalloc(sizeof(struct scatterlist) * |
| 4276 | hba[i]->maxsgentries, |
| 4277 | GFP_KERNEL); |
| 4278 | if (hba[i]->scatter_list[k] == NULL) { |
| 4279 | printk(KERN_ERR "cciss%d: could not allocate " |
| 4280 | "s/g lists\n", i); |
| 4281 | goto clean4; |
| 4282 | } |
| 4283 | } |
Stephen M. Cameron | 49fc560 | 2010-02-26 16:01:22 -0600 | [diff] [blame] | 4284 | hba[i]->cmd_sg_list = cciss_allocate_sg_chain_blocks(hba[i], |
| 4285 | hba[i]->chainsize, hba[i]->nr_cmds); |
| 4286 | if (!hba[i]->cmd_sg_list && hba[i]->chainsize > 0) |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 4287 | goto clean4; |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 4288 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4289 | spin_lock_init(&hba[i]->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4290 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4291 | /* Initialize the pdev driver private data. |
| 4292 | have it point to hba[i]. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4293 | pci_set_drvdata(pdev, hba[i]); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4294 | /* command and error info recs zeroed out before |
| 4295 | they are used */ |
| 4296 | memset(hba[i]->cmd_pool_bits, 0, |
Julia Lawall | 061837b | 2008-09-22 14:57:16 -0700 | [diff] [blame] | 4297 | DIV_ROUND_UP(hba[i]->nr_cmds, BITS_PER_LONG) |
| 4298 | * sizeof(unsigned long)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4299 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 4300 | hba[i]->num_luns = 0; |
| 4301 | hba[i]->highest_lun = -1; |
| 4302 | for (j = 0; j < CISS_MAX_LUN; j++) { |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 4303 | hba[i]->drv[j] = NULL; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 4304 | hba[i]->gendisk[j] = NULL; |
| 4305 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4306 | |
| 4307 | cciss_scsi_setup(i); |
| 4308 | |
| 4309 | /* Turn the interrupts on so we can service requests */ |
| 4310 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON); |
| 4311 | |
Mike Miller | 22bece0 | 2008-11-06 12:53:25 -0800 | [diff] [blame] | 4312 | /* Get the firmware version */ |
| 4313 | inq_buff = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
| 4314 | if (inq_buff == NULL) { |
| 4315 | printk(KERN_ERR "cciss: out of memory\n"); |
| 4316 | goto clean4; |
| 4317 | } |
| 4318 | |
| 4319 | return_code = sendcmd_withirq(CISS_INQUIRY, i, inq_buff, |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 4320 | sizeof(InquiryData_struct), 0, CTLR_LUNID, TYPE_CMD); |
Mike Miller | 22bece0 | 2008-11-06 12:53:25 -0800 | [diff] [blame] | 4321 | if (return_code == IO_OK) { |
| 4322 | hba[i]->firm_ver[0] = inq_buff->data_byte[32]; |
| 4323 | hba[i]->firm_ver[1] = inq_buff->data_byte[33]; |
| 4324 | hba[i]->firm_ver[2] = inq_buff->data_byte[34]; |
| 4325 | hba[i]->firm_ver[3] = inq_buff->data_byte[35]; |
| 4326 | } else { /* send command failed */ |
| 4327 | printk(KERN_WARNING "cciss: unable to determine firmware" |
| 4328 | " version of controller\n"); |
| 4329 | } |
Eric Dumazet | 212a502 | 2009-08-24 10:01:53 +0200 | [diff] [blame] | 4330 | kfree(inq_buff); |
Mike Miller | 22bece0 | 2008-11-06 12:53:25 -0800 | [diff] [blame] | 4331 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4332 | cciss_procinit(i); |
Mike Miller | 92c4231a | 2006-12-06 20:35:06 -0800 | [diff] [blame] | 4333 | |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 4334 | hba[i]->cciss_max_sectors = 8192; |
Mike Miller | 92c4231a | 2006-12-06 20:35:06 -0800 | [diff] [blame] | 4335 | |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 4336 | rebuild_lun_table(hba[i], 1, 0); |
Mike Miller | d6dbf42 | 2005-09-21 09:55:32 -0700 | [diff] [blame] | 4337 | hba[i]->busy_initializing = 0; |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 4338 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4339 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 4340 | clean4: |
Jesper Juhl | 6044ec8 | 2005-11-07 01:01:32 -0800 | [diff] [blame] | 4341 | kfree(hba[i]->cmd_pool_bits); |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 4342 | /* Free up sg elements */ |
| 4343 | for (k = 0; k < hba[i]->nr_cmds; k++) |
| 4344 | kfree(hba[i]->scatter_list[k]); |
| 4345 | kfree(hba[i]->scatter_list); |
Stephen M. Cameron | 49fc560 | 2010-02-26 16:01:22 -0600 | [diff] [blame] | 4346 | cciss_free_sg_chain_blocks(hba[i]->cmd_sg_list, hba[i]->nr_cmds); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4347 | if (hba[i]->cmd_pool) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4348 | pci_free_consistent(hba[i]->pdev, |
Mike Miller | f880632 | 2006-12-06 20:35:01 -0800 | [diff] [blame] | 4349 | hba[i]->nr_cmds * sizeof(CommandList_struct), |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4350 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); |
| 4351 | if (hba[i]->errinfo_pool) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4352 | pci_free_consistent(hba[i]->pdev, |
Mike Miller | f880632 | 2006-12-06 20:35:01 -0800 | [diff] [blame] | 4353 | hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4354 | hba[i]->errinfo_pool, |
| 4355 | hba[i]->errinfo_pool_dhandle); |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 4356 | free_irq(hba[i]->intr[SIMPLE_MODE_INT], hba[i]); |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 4357 | clean2: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4358 | unregister_blkdev(hba[i]->major, hba[i]->devname); |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 4359 | clean1: |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4360 | cciss_destroy_hba_sysfs_entry(hba[i]); |
| 4361 | clean0: |
Stephen M. Cameron | 2cfa948 | 2009-10-13 09:18:22 +0200 | [diff] [blame] | 4362 | pci_release_regions(pdev); |
| 4363 | clean_no_release_regions: |
Mike Miller | 1f8ef38 | 2005-09-13 01:25:21 -0700 | [diff] [blame] | 4364 | hba[i]->busy_initializing = 0; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 4365 | |
Mike Miller | 872225c | 2006-12-13 00:34:22 -0800 | [diff] [blame] | 4366 | /* |
| 4367 | * Deliberately omit pci_disable_device(): it does something nasty to |
| 4368 | * Smart Array controllers that pci_enable_device does not undo |
| 4369 | */ |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 4370 | pci_set_drvdata(pdev, NULL); |
Patrick McHardy | 61808c2 | 2006-03-23 02:59:24 -0800 | [diff] [blame] | 4371 | free_hba(i); |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 4372 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4373 | } |
| 4374 | |
Gerald Britton | e9ca75b | 2007-05-14 13:53:01 -0400 | [diff] [blame] | 4375 | static void cciss_shutdown(struct pci_dev *pdev) |
| 4376 | { |
Stephen M. Cameron | 29009a0 | 2009-11-12 12:49:35 -0600 | [diff] [blame] | 4377 | ctlr_info_t *h; |
| 4378 | char *flush_buf; |
Gerald Britton | e9ca75b | 2007-05-14 13:53:01 -0400 | [diff] [blame] | 4379 | int return_code; |
| 4380 | |
Stephen M. Cameron | 29009a0 | 2009-11-12 12:49:35 -0600 | [diff] [blame] | 4381 | h = pci_get_drvdata(pdev); |
| 4382 | flush_buf = kzalloc(4, GFP_KERNEL); |
| 4383 | if (!flush_buf) { |
| 4384 | printk(KERN_WARNING |
| 4385 | "cciss:%d cache not flushed, out of memory.\n", |
| 4386 | h->ctlr); |
Gerald Britton | e9ca75b | 2007-05-14 13:53:01 -0400 | [diff] [blame] | 4387 | return; |
Gerald Britton | e9ca75b | 2007-05-14 13:53:01 -0400 | [diff] [blame] | 4388 | } |
Stephen M. Cameron | 29009a0 | 2009-11-12 12:49:35 -0600 | [diff] [blame] | 4389 | /* write all data in the battery backed cache to disk */ |
| 4390 | memset(flush_buf, 0, 4); |
| 4391 | return_code = sendcmd_withirq(CCISS_CACHE_FLUSH, h->ctlr, flush_buf, |
| 4392 | 4, 0, CTLR_LUNID, TYPE_CMD); |
| 4393 | kfree(flush_buf); |
| 4394 | if (return_code != IO_OK) |
| 4395 | printk(KERN_WARNING "cciss%d: Error flushing cache\n", |
| 4396 | h->ctlr); |
| 4397 | h->access.set_intr_mask(h, CCISS_INTR_OFF); |
| 4398 | free_irq(h->intr[2], h); |
Gerald Britton | e9ca75b | 2007-05-14 13:53:01 -0400 | [diff] [blame] | 4399 | } |
| 4400 | |
| 4401 | static void __devexit cciss_remove_one(struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4402 | { |
| 4403 | ctlr_info_t *tmp_ptr; |
| 4404 | int i, j; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4405 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4406 | if (pci_get_drvdata(pdev) == NULL) { |
| 4407 | printk(KERN_ERR "cciss: Unable to remove device \n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4408 | return; |
| 4409 | } |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 4410 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4411 | tmp_ptr = pci_get_drvdata(pdev); |
| 4412 | i = tmp_ptr->ctlr; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4413 | if (hba[i] == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4414 | printk(KERN_ERR "cciss: device appears to " |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4415 | "already be removed \n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4416 | return; |
| 4417 | } |
Bjorn Helgaas | b655077 | 2007-04-11 23:28:43 -0700 | [diff] [blame] | 4418 | |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 4419 | mutex_lock(&hba[i]->busy_shutting_down); |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 4420 | |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 4421 | remove_from_scan_list(hba[i]); |
Bjorn Helgaas | b655077 | 2007-04-11 23:28:43 -0700 | [diff] [blame] | 4422 | remove_proc_entry(hba[i]->devname, proc_cciss); |
| 4423 | unregister_blkdev(hba[i]->major, hba[i]->devname); |
| 4424 | |
| 4425 | /* remove it from the disk list */ |
| 4426 | for (j = 0; j < CISS_MAX_LUN; j++) { |
| 4427 | struct gendisk *disk = hba[i]->gendisk[j]; |
| 4428 | if (disk) { |
Jens Axboe | 165125e | 2007-07-24 09:28:11 +0200 | [diff] [blame] | 4429 | struct request_queue *q = disk->queue; |
Bjorn Helgaas | b655077 | 2007-04-11 23:28:43 -0700 | [diff] [blame] | 4430 | |
Stephen M. Cameron | 097d026 | 2009-09-17 13:47:19 -0500 | [diff] [blame] | 4431 | if (disk->flags & GENHD_FL_UP) { |
Stephen M. Cameron | 8ce5196 | 2009-09-17 13:47:34 -0500 | [diff] [blame] | 4432 | cciss_destroy_ld_sysfs_entry(hba[i], j, 1); |
Bjorn Helgaas | b655077 | 2007-04-11 23:28:43 -0700 | [diff] [blame] | 4433 | del_gendisk(disk); |
Stephen M. Cameron | 097d026 | 2009-09-17 13:47:19 -0500 | [diff] [blame] | 4434 | } |
Bjorn Helgaas | b655077 | 2007-04-11 23:28:43 -0700 | [diff] [blame] | 4435 | if (q) |
| 4436 | blk_cleanup_queue(q); |
| 4437 | } |
| 4438 | } |
| 4439 | |
Mike Miller | ba198ef | 2008-08-04 11:54:55 +0200 | [diff] [blame] | 4440 | #ifdef CONFIG_CISS_SCSI_TAPE |
Bjorn Helgaas | b655077 | 2007-04-11 23:28:43 -0700 | [diff] [blame] | 4441 | cciss_unregister_scsi(i); /* unhook from SCSI subsystem */ |
Mike Miller | ba198ef | 2008-08-04 11:54:55 +0200 | [diff] [blame] | 4442 | #endif |
Bjorn Helgaas | b655077 | 2007-04-11 23:28:43 -0700 | [diff] [blame] | 4443 | |
Gerald Britton | e9ca75b | 2007-05-14 13:53:01 -0400 | [diff] [blame] | 4444 | cciss_shutdown(pdev); |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 4445 | |
| 4446 | #ifdef CONFIG_PCI_MSI |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4447 | if (hba[i]->msix_vector) |
| 4448 | pci_disable_msix(hba[i]->pdev); |
| 4449 | else if (hba[i]->msi_vector) |
| 4450 | pci_disable_msi(hba[i]->pdev); |
| 4451 | #endif /* CONFIG_PCI_MSI */ |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 4452 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4453 | iounmap(hba[i]->vaddr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4454 | |
Mike Miller | f880632 | 2006-12-06 20:35:01 -0800 | [diff] [blame] | 4455 | pci_free_consistent(hba[i]->pdev, hba[i]->nr_cmds * sizeof(CommandList_struct), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4456 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); |
Mike Miller | f880632 | 2006-12-06 20:35:01 -0800 | [diff] [blame] | 4457 | pci_free_consistent(hba[i]->pdev, hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4458 | hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4459 | kfree(hba[i]->cmd_pool_bits); |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 4460 | /* Free up sg elements */ |
| 4461 | for (j = 0; j < hba[i]->nr_cmds; j++) |
| 4462 | kfree(hba[i]->scatter_list[j]); |
| 4463 | kfree(hba[i]->scatter_list); |
Stephen M. Cameron | 49fc560 | 2010-02-26 16:01:22 -0600 | [diff] [blame] | 4464 | cciss_free_sg_chain_blocks(hba[i]->cmd_sg_list, hba[i]->nr_cmds); |
Mike Miller | 872225c | 2006-12-13 00:34:22 -0800 | [diff] [blame] | 4465 | /* |
| 4466 | * Deliberately omit pci_disable_device(): it does something nasty to |
| 4467 | * Smart Array controllers that pci_enable_device does not undo |
| 4468 | */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4469 | pci_release_regions(pdev); |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 4470 | pci_set_drvdata(pdev, NULL); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4471 | cciss_destroy_hba_sysfs_entry(hba[i]); |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 4472 | mutex_unlock(&hba[i]->busy_shutting_down); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4473 | free_hba(i); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4474 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4475 | |
| 4476 | static struct pci_driver cciss_pci_driver = { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4477 | .name = "cciss", |
| 4478 | .probe = cciss_init_one, |
| 4479 | .remove = __devexit_p(cciss_remove_one), |
| 4480 | .id_table = cciss_pci_device_id, /* id_table */ |
Gerald Britton | e9ca75b | 2007-05-14 13:53:01 -0400 | [diff] [blame] | 4481 | .shutdown = cciss_shutdown, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4482 | }; |
| 4483 | |
| 4484 | /* |
| 4485 | * 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] | 4486 | * 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] | 4487 | */ |
| 4488 | static int __init cciss_init(void) |
| 4489 | { |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4490 | int err; |
| 4491 | |
Jens Axboe | 10cbda9 | 2009-02-27 20:14:20 +0100 | [diff] [blame] | 4492 | /* |
| 4493 | * The hardware requires that commands are aligned on a 64-bit |
| 4494 | * boundary. Given that we use pci_alloc_consistent() to allocate an |
| 4495 | * array of them, the size must be a multiple of 8 bytes. |
| 4496 | */ |
Stephen M. Cameron | 1b7d0d2 | 2010-02-26 16:01:17 -0600 | [diff] [blame] | 4497 | BUILD_BUG_ON(sizeof(CommandList_struct) % COMMANDLIST_ALIGNMENT); |
Jens Axboe | 10cbda9 | 2009-02-27 20:14:20 +0100 | [diff] [blame] | 4498 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4499 | printk(KERN_INFO DRIVER_NAME "\n"); |
| 4500 | |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4501 | err = bus_register(&cciss_bus_type); |
| 4502 | if (err) |
| 4503 | return err; |
| 4504 | |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 4505 | /* Start the scan thread */ |
| 4506 | cciss_scan_thread = kthread_run(scan_thread, NULL, "cciss_scan"); |
| 4507 | if (IS_ERR(cciss_scan_thread)) { |
| 4508 | err = PTR_ERR(cciss_scan_thread); |
| 4509 | goto err_bus_unregister; |
| 4510 | } |
| 4511 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4512 | /* Register for our PCI devices */ |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4513 | err = pci_register_driver(&cciss_pci_driver); |
| 4514 | if (err) |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 4515 | goto err_thread_stop; |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4516 | |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 4517 | return err; |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4518 | |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 4519 | err_thread_stop: |
| 4520 | kthread_stop(cciss_scan_thread); |
| 4521 | err_bus_unregister: |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4522 | bus_unregister(&cciss_bus_type); |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 4523 | |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4524 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4525 | } |
| 4526 | |
| 4527 | static void __exit cciss_cleanup(void) |
| 4528 | { |
| 4529 | int i; |
| 4530 | |
| 4531 | pci_unregister_driver(&cciss_pci_driver); |
| 4532 | /* double check that all controller entrys have been removed */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4533 | for (i = 0; i < MAX_CTLR; i++) { |
| 4534 | if (hba[i] != NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4535 | printk(KERN_WARNING "cciss: had to remove" |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4536 | " controller %d\n", i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4537 | cciss_remove_one(hba[i]->pdev); |
| 4538 | } |
| 4539 | } |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 4540 | kthread_stop(cciss_scan_thread); |
Alexey Dobriyan | 928b4d8 | 2008-04-29 01:01:44 -0700 | [diff] [blame] | 4541 | remove_proc_entry("driver/cciss", NULL); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4542 | bus_unregister(&cciss_bus_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4543 | } |
| 4544 | |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 4545 | static void fail_all_cmds(unsigned long ctlr) |
| 4546 | { |
| 4547 | /* If we get here, the board is apparently dead. */ |
| 4548 | ctlr_info_t *h = hba[ctlr]; |
| 4549 | CommandList_struct *c; |
| 4550 | unsigned long flags; |
| 4551 | |
| 4552 | printk(KERN_WARNING "cciss%d: controller not responding.\n", h->ctlr); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4553 | h->alive = 0; /* the controller apparently died... */ |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 4554 | |
| 4555 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); |
| 4556 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4557 | pci_disable_device(h->pdev); /* Make sure it is really dead. */ |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 4558 | |
| 4559 | /* move everything off the request queue onto the completed queue */ |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 4560 | while (!hlist_empty(&h->reqQ)) { |
| 4561 | c = hlist_entry(h->reqQ.first, CommandList_struct, list); |
| 4562 | removeQ(c); |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 4563 | h->Qdepth--; |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 4564 | addQ(&h->cmpQ, c); |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 4565 | } |
| 4566 | |
| 4567 | /* Now, fail everything on the completed queue with a HW error */ |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 4568 | while (!hlist_empty(&h->cmpQ)) { |
| 4569 | c = hlist_entry(h->cmpQ.first, CommandList_struct, list); |
| 4570 | removeQ(c); |
Hannes Reinecke | b59e64d | 2009-07-02 22:02:06 +0200 | [diff] [blame] | 4571 | if (c->cmd_type != CMD_MSG_STALE) |
| 4572 | c->err_info->CommandStatus = CMD_HARDWARE_ERR; |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 4573 | if (c->cmd_type == CMD_RWREQ) { |
| 4574 | complete_command(h, c, 0); |
| 4575 | } else if (c->cmd_type == CMD_IOCTL_PEND) |
| 4576 | complete(c->waiting); |
| 4577 | #ifdef CONFIG_CISS_SCSI_TAPE |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4578 | else if (c->cmd_type == CMD_SCSI) |
| 4579 | complete_scsi_command(c, 0, 0); |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 4580 | #endif |
| 4581 | } |
| 4582 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
| 4583 | return; |
| 4584 | } |
| 4585 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4586 | module_init(cciss_init); |
| 4587 | module_exit(cciss_cleanup); |