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 | |
| 71 | #include "cciss_cmd.h" |
| 72 | #include "cciss.h" |
| 73 | #include <linux/cciss_ioctl.h> |
| 74 | |
| 75 | /* define the PCI info for the cards we can control */ |
| 76 | static const struct pci_device_id cciss_pci_device_id[] = { |
Bjorn Helgaas | f82ccdb | 2006-06-25 05:49:07 -0700 | [diff] [blame] | 77 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISS, 0x0E11, 0x4070}, |
| 78 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4080}, |
| 79 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4082}, |
| 80 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4083}, |
| 81 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x4091}, |
| 82 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409A}, |
| 83 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409B}, |
| 84 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409C}, |
| 85 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409D}, |
| 86 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSA, 0x103C, 0x3225}, |
| 87 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3223}, |
| 88 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3234}, |
| 89 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3235}, |
| 90 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3211}, |
| 91 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3212}, |
| 92 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3213}, |
| 93 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3214}, |
| 94 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3215}, |
Mike Miller | de92391 | 2006-12-06 20:35:03 -0800 | [diff] [blame] | 95 | {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] | 96 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x323D}, |
Mike Miller | 24aac48 | 2008-06-12 15:21:34 -0700 | [diff] [blame] | 97 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3241}, |
| 98 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3243}, |
| 99 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3245}, |
| 100 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3247}, |
| 101 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3249}, |
Mike Miller | 77ca728 | 2008-11-06 12:53:14 -0800 | [diff] [blame] | 102 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324A}, |
| 103 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324B}, |
Mike Miller | 4ff9a9a | 2006-12-06 20:35:00 -0800 | [diff] [blame] | 104 | {PCI_VENDOR_ID_HP, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, |
| 105 | PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0}, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | {0,} |
| 107 | }; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 108 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | MODULE_DEVICE_TABLE(pci, cciss_pci_device_id); |
| 110 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | /* board_id = Subsystem Device ID & Vendor ID |
| 112 | * product = Marketing Name for the board |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 113 | * access = Address of the struct of function pointers |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | */ |
| 115 | static struct board_type products[] = { |
Mike Miller | 4915399 | 2008-07-04 10:00:02 -0700 | [diff] [blame] | 116 | {0x40700E11, "Smart Array 5300", &SA5_access}, |
| 117 | {0x40800E11, "Smart Array 5i", &SA5B_access}, |
| 118 | {0x40820E11, "Smart Array 532", &SA5B_access}, |
| 119 | {0x40830E11, "Smart Array 5312", &SA5B_access}, |
| 120 | {0x409A0E11, "Smart Array 641", &SA5_access}, |
| 121 | {0x409B0E11, "Smart Array 642", &SA5_access}, |
| 122 | {0x409C0E11, "Smart Array 6400", &SA5_access}, |
| 123 | {0x409D0E11, "Smart Array 6400 EM", &SA5_access}, |
| 124 | {0x40910E11, "Smart Array 6i", &SA5_access}, |
| 125 | {0x3225103C, "Smart Array P600", &SA5_access}, |
| 126 | {0x3223103C, "Smart Array P800", &SA5_access}, |
| 127 | {0x3234103C, "Smart Array P400", &SA5_access}, |
| 128 | {0x3235103C, "Smart Array P400i", &SA5_access}, |
| 129 | {0x3211103C, "Smart Array E200i", &SA5_access}, |
| 130 | {0x3212103C, "Smart Array E200", &SA5_access}, |
| 131 | {0x3213103C, "Smart Array E200i", &SA5_access}, |
| 132 | {0x3214103C, "Smart Array E200i", &SA5_access}, |
| 133 | {0x3215103C, "Smart Array E200i", &SA5_access}, |
| 134 | {0x3237103C, "Smart Array E500", &SA5_access}, |
| 135 | {0x323D103C, "Smart Array P700m", &SA5_access}, |
| 136 | {0x3241103C, "Smart Array P212", &SA5_access}, |
| 137 | {0x3243103C, "Smart Array P410", &SA5_access}, |
| 138 | {0x3245103C, "Smart Array P410i", &SA5_access}, |
| 139 | {0x3247103C, "Smart Array P411", &SA5_access}, |
| 140 | {0x3249103C, "Smart Array P812", &SA5_access}, |
Mike Miller | 77ca728 | 2008-11-06 12:53:14 -0800 | [diff] [blame] | 141 | {0x324A103C, "Smart Array P712m", &SA5_access}, |
| 142 | {0x324B103C, "Smart Array P711m", &SA5_access}, |
Mike Miller | 4915399 | 2008-07-04 10:00:02 -0700 | [diff] [blame] | 143 | {0xFFFF103C, "Unknown Smart Array", &SA5_access}, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | }; |
| 145 | |
Bjorn Helgaas | d14c4ab | 2006-06-25 05:49:04 -0700 | [diff] [blame] | 146 | /* 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] | 147 | #define MAX_CONFIG_WAIT 30000 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | #define MAX_IOCTL_CONFIG_WAIT 1000 |
| 149 | |
| 150 | /*define how many times we will try a command because of bus resets */ |
| 151 | #define MAX_CMD_RETRIES 3 |
| 152 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | #define MAX_CTLR 32 |
| 154 | |
| 155 | /* Originally cciss driver only supports 8 major numbers */ |
| 156 | #define MAX_CTLR_ORIG 8 |
| 157 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | static ctlr_info_t *hba[MAX_CTLR]; |
| 159 | |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 160 | static struct task_struct *cciss_scan_thread; |
| 161 | static DEFINE_MUTEX(scan_mutex); |
| 162 | static LIST_HEAD(scan_q); |
| 163 | |
Jens Axboe | 165125e | 2007-07-24 09:28:11 +0200 | [diff] [blame] | 164 | static void do_cciss_request(struct request_queue *q); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 165 | static irqreturn_t do_cciss_intr(int irq, void *dev_id); |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 166 | static int cciss_open(struct block_device *bdev, fmode_t mode); |
| 167 | static int cciss_release(struct gendisk *disk, fmode_t mode); |
| 168 | static int cciss_ioctl(struct block_device *bdev, fmode_t mode, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 169 | unsigned int cmd, unsigned long arg); |
Christoph Hellwig | a885c8c | 2006-01-08 01:02:50 -0800 | [diff] [blame] | 170 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | static int cciss_revalidate(struct gendisk *disk); |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 173 | 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] | 174 | static int deregister_disk(ctlr_info_t *h, int drv_index, |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 175 | int clear_all, int via_ioctl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 177 | static void cciss_read_capacity(int ctlr, int logvol, int withirq, |
| 178 | sector_t *total_size, unsigned int *block_size); |
| 179 | static void cciss_read_capacity_16(int ctlr, int logvol, int withirq, |
| 180 | sector_t *total_size, unsigned int *block_size); |
| 181 | static void cciss_geometry_inquiry(int ctlr, int logvol, |
| 182 | int withirq, sector_t total_size, |
| 183 | unsigned int block_size, InquiryData_struct *inq_buff, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 184 | drive_info_struct *drv); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 185 | static void __devinit cciss_interrupt_mode(ctlr_info_t *, struct pci_dev *, |
| 186 | __u32); |
| 187 | static void start_io(ctlr_info_t *h); |
| 188 | static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 189 | __u8 page_code, unsigned char *scsi3addr, int cmd_type); |
| 190 | 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] | 191 | __u8 page_code, unsigned char scsi3addr[], |
| 192 | int cmd_type); |
scameron@beardog.cca.cpqcorp.net | 85cc61a | 2009-06-08 16:07:45 -0500 | [diff] [blame] | 193 | static int sendcmd_withirq_core(ctlr_info_t *h, CommandList_struct *c, |
| 194 | int attempt_retry); |
| 195 | static int process_sendcmd_error(ctlr_info_t *h, CommandList_struct *c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 197 | static void fail_all_cmds(unsigned long ctlr); |
Andrew Patterson | d6f4965 | 2009-09-17 13:47:03 -0500 | [diff] [blame] | 198 | static int add_to_scan_list(struct ctlr_info *h); |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 199 | static int scan_thread(void *data); |
| 200 | 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] | 201 | static void cciss_hba_release(struct device *dev); |
| 202 | static void cciss_device_release(struct device *dev); |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 203 | static void cciss_free_gendisk(ctlr_info_t *h, int drv_index); |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 204 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | #ifdef CONFIG_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | static void cciss_procinit(int i); |
| 207 | #else |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 208 | static void cciss_procinit(int i) |
| 209 | { |
| 210 | } |
| 211 | #endif /* CONFIG_PROC_FS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | |
| 213 | #ifdef CONFIG_COMPAT |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 214 | static int cciss_compat_ioctl(struct block_device *, fmode_t, |
| 215 | unsigned, unsigned long); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | #endif |
| 217 | |
Alexey Dobriyan | 83d5cde | 2009-09-21 17:01:13 -0700 | [diff] [blame] | 218 | static const struct block_device_operations cciss_fops = { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 219 | .owner = THIS_MODULE, |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 220 | .open = cciss_open, |
| 221 | .release = cciss_release, |
| 222 | .locked_ioctl = cciss_ioctl, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 223 | .getgeo = cciss_getgeo, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | #ifdef CONFIG_COMPAT |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 225 | .compat_ioctl = cciss_compat_ioctl, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | #endif |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 227 | .revalidate_disk = cciss_revalidate, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 228 | }; |
| 229 | |
| 230 | /* |
| 231 | * Enqueuing and dequeuing functions for cmdlists. |
| 232 | */ |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 233 | static inline void addQ(struct hlist_head *list, CommandList_struct *c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | { |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 235 | hlist_add_head(&c->list, list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | } |
| 237 | |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 238 | static inline void removeQ(CommandList_struct *c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | { |
Hannes Reinecke | b59e64d | 2009-07-02 22:02:06 +0200 | [diff] [blame] | 240 | /* |
| 241 | * After kexec/dump some commands might still |
| 242 | * be in flight, which the firmware will try |
| 243 | * to complete. Resetting the firmware doesn't work |
| 244 | * with old fw revisions, so we have to mark |
| 245 | * them off as 'stale' to prevent the driver from |
| 246 | * falling over. |
| 247 | */ |
| 248 | if (WARN_ON(hlist_unhashed(&c->list))) { |
| 249 | c->cmd_type = CMD_MSG_STALE; |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 250 | return; |
Hannes Reinecke | b59e64d | 2009-07-02 22:02:06 +0200 | [diff] [blame] | 251 | } |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 252 | |
| 253 | hlist_del_init(&c->list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | } |
| 255 | |
| 256 | #include "cciss_scsi.c" /* For SCSI tape support */ |
| 257 | |
Randy Dunlap | 0f5486e | 2006-12-29 16:48:31 -0800 | [diff] [blame] | 258 | #define RAID_UNKNOWN 6 |
| 259 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | #ifdef CONFIG_PROC_FS |
| 261 | |
| 262 | /* |
| 263 | * Report information about this controller. |
| 264 | */ |
| 265 | #define ENG_GIG 1000000000 |
| 266 | #define ENG_GIG_FACTOR (ENG_GIG/512) |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 267 | #define ENGAGE_SCSI "engage scsi" |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 268 | static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG", |
| 269 | "UNKNOWN" |
| 270 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | |
| 272 | static struct proc_dir_entry *proc_cciss; |
| 273 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 274 | static void cciss_seq_show_header(struct seq_file *seq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | { |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 276 | ctlr_info_t *h = seq->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 278 | seq_printf(seq, "%s: HP %s Controller\n" |
| 279 | "Board ID: 0x%08lx\n" |
| 280 | "Firmware Version: %c%c%c%c\n" |
| 281 | "IRQ: %d\n" |
| 282 | "Logical drives: %d\n" |
| 283 | "Current Q depth: %d\n" |
| 284 | "Current # commands on controller: %d\n" |
| 285 | "Max Q depth since init: %d\n" |
| 286 | "Max # commands on controller since init: %d\n" |
| 287 | "Max SG entries since init: %d\n", |
| 288 | h->devname, |
| 289 | h->product_name, |
| 290 | (unsigned long)h->board_id, |
| 291 | h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], |
| 292 | h->firm_ver[3], (unsigned int)h->intr[SIMPLE_MODE_INT], |
| 293 | h->num_luns, |
| 294 | h->Qdepth, h->commands_outstanding, |
| 295 | h->maxQsinceinit, h->max_outstanding, h->maxSG); |
| 296 | |
| 297 | #ifdef CONFIG_CISS_SCSI_TAPE |
| 298 | cciss_seq_tape_report(seq, h->ctlr); |
| 299 | #endif /* CONFIG_CISS_SCSI_TAPE */ |
| 300 | } |
| 301 | |
| 302 | static void *cciss_seq_start(struct seq_file *seq, loff_t *pos) |
| 303 | { |
| 304 | ctlr_info_t *h = seq->private; |
| 305 | unsigned ctlr = h->ctlr; |
| 306 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | |
| 308 | /* prevent displaying bogus info during configuration |
| 309 | * or deconfiguration of a logical volume |
| 310 | */ |
| 311 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); |
| 312 | if (h->busy_configuring) { |
| 313 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 314 | return ERR_PTR(-EBUSY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 315 | } |
| 316 | h->busy_configuring = 1; |
| 317 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
| 318 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 319 | if (*pos == 0) |
| 320 | cciss_seq_show_header(seq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 322 | return pos; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | } |
| 324 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 325 | static int cciss_seq_show(struct seq_file *seq, void *v) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | { |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 327 | sector_t vol_sz, vol_sz_frac; |
| 328 | ctlr_info_t *h = seq->private; |
| 329 | unsigned ctlr = h->ctlr; |
| 330 | loff_t *pos = v; |
| 331 | drive_info_struct *drv = &h->drv[*pos]; |
| 332 | |
| 333 | if (*pos > h->highest_lun) |
| 334 | return 0; |
| 335 | |
| 336 | if (drv->heads == 0) |
| 337 | return 0; |
| 338 | |
| 339 | vol_sz = drv->nr_blocks; |
| 340 | vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR); |
| 341 | vol_sz_frac *= 100; |
| 342 | sector_div(vol_sz_frac, ENG_GIG_FACTOR); |
| 343 | |
| 344 | if (drv->raid_level > 5) |
| 345 | drv->raid_level = RAID_UNKNOWN; |
| 346 | seq_printf(seq, "cciss/c%dd%d:" |
| 347 | "\t%4u.%02uGB\tRAID %s\n", |
| 348 | ctlr, (int) *pos, (int)vol_sz, (int)vol_sz_frac, |
| 349 | raid_label[drv->raid_level]); |
| 350 | return 0; |
| 351 | } |
| 352 | |
| 353 | static void *cciss_seq_next(struct seq_file *seq, void *v, loff_t *pos) |
| 354 | { |
| 355 | ctlr_info_t *h = seq->private; |
| 356 | |
| 357 | if (*pos > h->highest_lun) |
| 358 | return NULL; |
| 359 | *pos += 1; |
| 360 | |
| 361 | return pos; |
| 362 | } |
| 363 | |
| 364 | static void cciss_seq_stop(struct seq_file *seq, void *v) |
| 365 | { |
| 366 | ctlr_info_t *h = seq->private; |
| 367 | |
| 368 | /* Only reset h->busy_configuring if we succeeded in setting |
| 369 | * it during cciss_seq_start. */ |
| 370 | if (v == ERR_PTR(-EBUSY)) |
| 371 | return; |
| 372 | |
| 373 | h->busy_configuring = 0; |
| 374 | } |
| 375 | |
James Morris | 88e9d34 | 2009-09-22 16:43:43 -0700 | [diff] [blame] | 376 | static const struct seq_operations cciss_seq_ops = { |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 377 | .start = cciss_seq_start, |
| 378 | .show = cciss_seq_show, |
| 379 | .next = cciss_seq_next, |
| 380 | .stop = cciss_seq_stop, |
| 381 | }; |
| 382 | |
| 383 | static int cciss_seq_open(struct inode *inode, struct file *file) |
| 384 | { |
| 385 | int ret = seq_open(file, &cciss_seq_ops); |
| 386 | struct seq_file *seq = file->private_data; |
| 387 | |
| 388 | if (!ret) |
| 389 | seq->private = PDE(inode)->data; |
| 390 | |
| 391 | return ret; |
| 392 | } |
| 393 | |
| 394 | static ssize_t |
| 395 | cciss_proc_write(struct file *file, const char __user *buf, |
| 396 | size_t length, loff_t *ppos) |
| 397 | { |
| 398 | int err; |
| 399 | char *buffer; |
| 400 | |
| 401 | #ifndef CONFIG_CISS_SCSI_TAPE |
| 402 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 403 | #endif |
| 404 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 405 | if (!buf || length > PAGE_SIZE - 1) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 406 | return -EINVAL; |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 407 | |
| 408 | buffer = (char *)__get_free_page(GFP_KERNEL); |
| 409 | if (!buffer) |
| 410 | return -ENOMEM; |
| 411 | |
| 412 | err = -EFAULT; |
| 413 | if (copy_from_user(buffer, buf, length)) |
| 414 | goto out; |
| 415 | buffer[length] = '\0'; |
| 416 | |
| 417 | #ifdef CONFIG_CISS_SCSI_TAPE |
| 418 | if (strncmp(ENGAGE_SCSI, buffer, sizeof ENGAGE_SCSI - 1) == 0) { |
| 419 | struct seq_file *seq = file->private_data; |
| 420 | ctlr_info_t *h = seq->private; |
| 421 | int rc; |
| 422 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 423 | rc = cciss_engage_scsi(h->ctlr); |
| 424 | if (rc != 0) |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 425 | err = -rc; |
| 426 | else |
| 427 | err = length; |
| 428 | } else |
| 429 | #endif /* CONFIG_CISS_SCSI_TAPE */ |
| 430 | err = -EINVAL; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 431 | /* might be nice to have "disengage" too, but it's not |
| 432 | safely possible. (only 1 module use count, lock issues.) */ |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 433 | |
| 434 | out: |
| 435 | free_page((unsigned long)buffer); |
| 436 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | } |
| 438 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 439 | static struct file_operations cciss_proc_fops = { |
| 440 | .owner = THIS_MODULE, |
| 441 | .open = cciss_seq_open, |
| 442 | .read = seq_read, |
| 443 | .llseek = seq_lseek, |
| 444 | .release = seq_release, |
| 445 | .write = cciss_proc_write, |
| 446 | }; |
| 447 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | static void __devinit cciss_procinit(int i) |
| 449 | { |
| 450 | struct proc_dir_entry *pde; |
| 451 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 452 | if (proc_cciss == NULL) |
Alexey Dobriyan | 928b4d8 | 2008-04-29 01:01:44 -0700 | [diff] [blame] | 453 | proc_cciss = proc_mkdir("driver/cciss", NULL); |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 454 | if (!proc_cciss) |
| 455 | return; |
Denis V. Lunev | 3dfcf9c | 2008-05-01 04:35:14 -0700 | [diff] [blame] | 456 | 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] | 457 | S_IROTH, proc_cciss, |
Denis V. Lunev | 3dfcf9c | 2008-05-01 04:35:14 -0700 | [diff] [blame] | 458 | &cciss_proc_fops, hba[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 460 | #endif /* CONFIG_PROC_FS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 461 | |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 462 | #define MAX_PRODUCT_NAME_LEN 19 |
| 463 | |
| 464 | #define to_hba(n) container_of(n, struct ctlr_info, dev) |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 465 | |
Andrew Patterson | d6f4965 | 2009-09-17 13:47:03 -0500 | [diff] [blame] | 466 | static ssize_t host_store_rescan(struct device *dev, |
| 467 | struct device_attribute *attr, |
| 468 | const char *buf, size_t count) |
| 469 | { |
| 470 | struct ctlr_info *h = to_hba(dev); |
| 471 | |
| 472 | add_to_scan_list(h); |
| 473 | wake_up_process(cciss_scan_thread); |
| 474 | wait_for_completion_interruptible(&h->scan_wait); |
| 475 | |
| 476 | return count; |
| 477 | } |
| 478 | DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 479 | |
| 480 | static ssize_t dev_show_unique_id(struct device *dev, |
| 481 | struct device_attribute *attr, |
| 482 | char *buf) |
| 483 | { |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 484 | drive_info_struct *drv = dev_get_drvdata(dev); |
| 485 | struct ctlr_info *h = to_hba(drv->dev->parent); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 486 | __u8 sn[16]; |
| 487 | unsigned long flags; |
| 488 | int ret = 0; |
| 489 | |
| 490 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
| 491 | if (h->busy_configuring) |
| 492 | ret = -EBUSY; |
| 493 | else |
| 494 | memcpy(sn, drv->serial_no, sizeof(sn)); |
| 495 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
| 496 | |
| 497 | if (ret) |
| 498 | return ret; |
| 499 | else |
| 500 | return snprintf(buf, 16 * 2 + 2, |
| 501 | "%02X%02X%02X%02X%02X%02X%02X%02X" |
| 502 | "%02X%02X%02X%02X%02X%02X%02X%02X\n", |
| 503 | sn[0], sn[1], sn[2], sn[3], |
| 504 | sn[4], sn[5], sn[6], sn[7], |
| 505 | sn[8], sn[9], sn[10], sn[11], |
| 506 | sn[12], sn[13], sn[14], sn[15]); |
| 507 | } |
| 508 | DEVICE_ATTR(unique_id, S_IRUGO, dev_show_unique_id, NULL); |
| 509 | |
| 510 | static ssize_t dev_show_vendor(struct device *dev, |
| 511 | struct device_attribute *attr, |
| 512 | char *buf) |
| 513 | { |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 514 | drive_info_struct *drv = dev_get_drvdata(dev); |
| 515 | struct ctlr_info *h = to_hba(drv->dev->parent); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 516 | char vendor[VENDOR_LEN + 1]; |
| 517 | unsigned long flags; |
| 518 | int ret = 0; |
| 519 | |
| 520 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
| 521 | if (h->busy_configuring) |
| 522 | ret = -EBUSY; |
| 523 | else |
| 524 | memcpy(vendor, drv->vendor, VENDOR_LEN + 1); |
| 525 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
| 526 | |
| 527 | if (ret) |
| 528 | return ret; |
| 529 | else |
| 530 | return snprintf(buf, sizeof(vendor) + 1, "%s\n", drv->vendor); |
| 531 | } |
| 532 | DEVICE_ATTR(vendor, S_IRUGO, dev_show_vendor, NULL); |
| 533 | |
| 534 | static ssize_t dev_show_model(struct device *dev, |
| 535 | struct device_attribute *attr, |
| 536 | char *buf) |
| 537 | { |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 538 | drive_info_struct *drv = dev_get_drvdata(dev); |
| 539 | struct ctlr_info *h = to_hba(drv->dev->parent); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 540 | char model[MODEL_LEN + 1]; |
| 541 | unsigned long flags; |
| 542 | int ret = 0; |
| 543 | |
| 544 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
| 545 | if (h->busy_configuring) |
| 546 | ret = -EBUSY; |
| 547 | else |
| 548 | memcpy(model, drv->model, MODEL_LEN + 1); |
| 549 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
| 550 | |
| 551 | if (ret) |
| 552 | return ret; |
| 553 | else |
| 554 | return snprintf(buf, sizeof(model) + 1, "%s\n", drv->model); |
| 555 | } |
| 556 | DEVICE_ATTR(model, S_IRUGO, dev_show_model, NULL); |
| 557 | |
| 558 | static ssize_t dev_show_rev(struct device *dev, |
| 559 | struct device_attribute *attr, |
| 560 | char *buf) |
| 561 | { |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 562 | drive_info_struct *drv = dev_get_drvdata(dev); |
| 563 | struct ctlr_info *h = to_hba(drv->dev->parent); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 564 | char rev[REV_LEN + 1]; |
| 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(rev, drv->rev, REV_LEN + 1); |
| 573 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
| 574 | |
| 575 | if (ret) |
| 576 | return ret; |
| 577 | else |
| 578 | return snprintf(buf, sizeof(rev) + 1, "%s\n", drv->rev); |
| 579 | } |
| 580 | DEVICE_ATTR(rev, S_IRUGO, dev_show_rev, NULL); |
| 581 | |
Andrew Patterson | d6f4965 | 2009-09-17 13:47:03 -0500 | [diff] [blame] | 582 | static struct attribute *cciss_host_attrs[] = { |
| 583 | &dev_attr_rescan.attr, |
| 584 | NULL |
| 585 | }; |
| 586 | |
| 587 | static struct attribute_group cciss_host_attr_group = { |
| 588 | .attrs = cciss_host_attrs, |
| 589 | }; |
| 590 | |
| 591 | static struct attribute_group *cciss_host_attr_groups[] = { |
| 592 | &cciss_host_attr_group, |
| 593 | NULL |
| 594 | }; |
| 595 | |
| 596 | static struct device_type cciss_host_type = { |
| 597 | .name = "cciss_host", |
| 598 | .groups = cciss_host_attr_groups, |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 599 | .release = cciss_hba_release, |
Andrew Patterson | d6f4965 | 2009-09-17 13:47:03 -0500 | [diff] [blame] | 600 | }; |
| 601 | |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 602 | static struct attribute *cciss_dev_attrs[] = { |
| 603 | &dev_attr_unique_id.attr, |
| 604 | &dev_attr_model.attr, |
| 605 | &dev_attr_vendor.attr, |
| 606 | &dev_attr_rev.attr, |
| 607 | NULL |
| 608 | }; |
| 609 | |
| 610 | static struct attribute_group cciss_dev_attr_group = { |
| 611 | .attrs = cciss_dev_attrs, |
| 612 | }; |
| 613 | |
David Brownell | a4dbd67 | 2009-06-24 10:06:31 -0700 | [diff] [blame] | 614 | static const struct attribute_group *cciss_dev_attr_groups[] = { |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 615 | &cciss_dev_attr_group, |
| 616 | NULL |
| 617 | }; |
| 618 | |
| 619 | static struct device_type cciss_dev_type = { |
| 620 | .name = "cciss_device", |
| 621 | .groups = cciss_dev_attr_groups, |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 622 | .release = cciss_device_release, |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 623 | }; |
| 624 | |
| 625 | static struct bus_type cciss_bus_type = { |
| 626 | .name = "cciss", |
| 627 | }; |
| 628 | |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 629 | /* |
| 630 | * cciss_hba_release is called when the reference count |
| 631 | * of h->dev goes to zero. |
| 632 | */ |
| 633 | static void cciss_hba_release(struct device *dev) |
| 634 | { |
| 635 | /* |
| 636 | * nothing to do, but need this to avoid a warning |
| 637 | * about not having a release handler from lib/kref.c. |
| 638 | */ |
| 639 | } |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 640 | |
| 641 | /* |
| 642 | * Initialize sysfs entry for each controller. This sets up and registers |
| 643 | * the 'cciss#' directory for each individual controller under |
| 644 | * /sys/bus/pci/devices/<dev>/. |
| 645 | */ |
| 646 | static int cciss_create_hba_sysfs_entry(struct ctlr_info *h) |
| 647 | { |
| 648 | device_initialize(&h->dev); |
| 649 | h->dev.type = &cciss_host_type; |
| 650 | h->dev.bus = &cciss_bus_type; |
| 651 | dev_set_name(&h->dev, "%s", h->devname); |
| 652 | h->dev.parent = &h->pdev->dev; |
| 653 | |
| 654 | return device_add(&h->dev); |
| 655 | } |
| 656 | |
| 657 | /* |
| 658 | * Remove sysfs entries for an hba. |
| 659 | */ |
| 660 | static void cciss_destroy_hba_sysfs_entry(struct ctlr_info *h) |
| 661 | { |
| 662 | device_del(&h->dev); |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 663 | put_device(&h->dev); /* final put. */ |
| 664 | } |
| 665 | |
| 666 | /* cciss_device_release is called when the reference count |
| 667 | * of h->drv[x].dev goes to zero. |
| 668 | */ |
| 669 | static void cciss_device_release(struct device *dev) |
| 670 | { |
| 671 | kfree(dev); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 672 | } |
| 673 | |
| 674 | /* |
| 675 | * Initialize sysfs for each logical drive. This sets up and registers |
| 676 | * the 'c#d#' directory for each individual logical drive under |
| 677 | * /sys/bus/pci/devices/<dev/ccis#/. We also create a link from |
| 678 | * /sys/block/cciss!c#d# to this entry. |
| 679 | */ |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 680 | static long cciss_create_ld_sysfs_entry(struct ctlr_info *h, |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 681 | int drv_index) |
| 682 | { |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 683 | struct device *dev; |
| 684 | |
Stephen M. Cameron | 8ce5196 | 2009-09-17 13:47:34 -0500 | [diff] [blame] | 685 | /* Special case for c*d0, we only create it once. */ |
| 686 | if (drv_index == 0 && h->drv[drv_index].dev != NULL) |
| 687 | return 0; |
| 688 | |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 689 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); |
| 690 | if (!dev) |
| 691 | return -ENOMEM; |
| 692 | device_initialize(dev); |
| 693 | dev->type = &cciss_dev_type; |
| 694 | dev->bus = &cciss_bus_type; |
| 695 | dev_set_name(dev, "c%dd%d", h->ctlr, drv_index); |
| 696 | dev->parent = &h->dev; |
| 697 | h->drv[drv_index].dev = dev; |
| 698 | dev_set_drvdata(dev, &h->drv[drv_index]); |
| 699 | return device_add(dev); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 700 | } |
| 701 | |
| 702 | /* |
| 703 | * Remove sysfs entries for a logical drive. |
| 704 | */ |
Stephen M. Cameron | 8ce5196 | 2009-09-17 13:47:34 -0500 | [diff] [blame] | 705 | static void cciss_destroy_ld_sysfs_entry(struct ctlr_info *h, int drv_index, |
| 706 | int ctlr_exiting) |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 707 | { |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 708 | struct device *dev = h->drv[drv_index].dev; |
Stephen M. Cameron | 8ce5196 | 2009-09-17 13:47:34 -0500 | [diff] [blame] | 709 | |
| 710 | /* special case for c*d0, we only destroy it on controller exit */ |
| 711 | if (drv_index == 0 && !ctlr_exiting) |
| 712 | return; |
| 713 | |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 714 | device_del(dev); |
| 715 | put_device(dev); /* the "final" put. */ |
| 716 | h->drv[drv_index].dev = NULL; |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 717 | } |
| 718 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 719 | /* |
| 720 | * For operations that cannot sleep, a command block is allocated at init, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 721 | * 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] | 722 | * which ones are free or in use. For operations that can wait for kmalloc |
| 723 | * to possible sleep, this routine can be called with get_from_pool set to 0. |
| 724 | * cmd_free() MUST be called with a got_from_pool set to 0 if cmd_alloc was. |
| 725 | */ |
| 726 | 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] | 727 | { |
| 728 | CommandList_struct *c; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 729 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 730 | u64bit temp64; |
| 731 | dma_addr_t cmd_dma_handle, err_dma_handle; |
| 732 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 733 | if (!get_from_pool) { |
| 734 | c = (CommandList_struct *) pci_alloc_consistent(h->pdev, |
| 735 | sizeof(CommandList_struct), &cmd_dma_handle); |
| 736 | if (c == NULL) |
| 737 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 738 | memset(c, 0, sizeof(CommandList_struct)); |
| 739 | |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 740 | c->cmdindex = -1; |
| 741 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 742 | c->err_info = (ErrorInfo_struct *) |
| 743 | pci_alloc_consistent(h->pdev, sizeof(ErrorInfo_struct), |
| 744 | &err_dma_handle); |
| 745 | |
| 746 | if (c->err_info == NULL) { |
| 747 | pci_free_consistent(h->pdev, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 748 | sizeof(CommandList_struct), c, cmd_dma_handle); |
| 749 | return NULL; |
| 750 | } |
| 751 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 752 | } else { /* get it out of the controllers pool */ |
| 753 | |
| 754 | do { |
Mike Miller | f880632 | 2006-12-06 20:35:01 -0800 | [diff] [blame] | 755 | i = find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds); |
| 756 | if (i == h->nr_cmds) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 757 | return NULL; |
| 758 | } while (test_and_set_bit |
| 759 | (i & (BITS_PER_LONG - 1), |
| 760 | h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 761 | #ifdef CCISS_DEBUG |
| 762 | printk(KERN_DEBUG "cciss: using command buffer %d\n", i); |
| 763 | #endif |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 764 | c = h->cmd_pool + i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 765 | memset(c, 0, sizeof(CommandList_struct)); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 766 | cmd_dma_handle = h->cmd_pool_dhandle |
| 767 | + i * sizeof(CommandList_struct); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 768 | c->err_info = h->errinfo_pool + i; |
| 769 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 770 | err_dma_handle = h->errinfo_pool_dhandle |
| 771 | + i * sizeof(ErrorInfo_struct); |
| 772 | h->nr_allocs++; |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 773 | |
| 774 | c->cmdindex = i; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 775 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 776 | |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 777 | INIT_HLIST_NODE(&c->list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 778 | c->busaddr = (__u32) cmd_dma_handle; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 779 | temp64.val = (__u64) err_dma_handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 780 | c->ErrDesc.Addr.lower = temp64.val32.lower; |
| 781 | c->ErrDesc.Addr.upper = temp64.val32.upper; |
| 782 | c->ErrDesc.Len = sizeof(ErrorInfo_struct); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 783 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 784 | c->ctlr = h->ctlr; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 785 | return c; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 786 | } |
| 787 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 788 | /* |
| 789 | * Frees a command block that was previously allocated with cmd_alloc(). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 790 | */ |
| 791 | static void cmd_free(ctlr_info_t *h, CommandList_struct *c, int got_from_pool) |
| 792 | { |
| 793 | int i; |
| 794 | u64bit temp64; |
| 795 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 796 | if (!got_from_pool) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 797 | temp64.val32.lower = c->ErrDesc.Addr.lower; |
| 798 | temp64.val32.upper = c->ErrDesc.Addr.upper; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 799 | pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct), |
| 800 | c->err_info, (dma_addr_t) temp64.val); |
| 801 | pci_free_consistent(h->pdev, sizeof(CommandList_struct), |
| 802 | c, (dma_addr_t) c->busaddr); |
| 803 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 804 | i = c - h->cmd_pool; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 805 | clear_bit(i & (BITS_PER_LONG - 1), |
| 806 | h->cmd_pool_bits + (i / BITS_PER_LONG)); |
| 807 | h->nr_frees++; |
| 808 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 809 | } |
| 810 | |
| 811 | static inline ctlr_info_t *get_host(struct gendisk *disk) |
| 812 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 813 | return disk->queue->queuedata; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 814 | } |
| 815 | |
| 816 | static inline drive_info_struct *get_drv(struct gendisk *disk) |
| 817 | { |
| 818 | return disk->private_data; |
| 819 | } |
| 820 | |
| 821 | /* |
| 822 | * Open. Make sure the device is really there. |
| 823 | */ |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 824 | static int cciss_open(struct block_device *bdev, fmode_t mode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 825 | { |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 826 | ctlr_info_t *host = get_host(bdev->bd_disk); |
| 827 | drive_info_struct *drv = get_drv(bdev->bd_disk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 828 | |
| 829 | #ifdef CCISS_DEBUG |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 830 | printk(KERN_DEBUG "cciss_open %s\n", bdev->bd_disk->disk_name); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 831 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 832 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 833 | if (host->busy_initializing || drv->busy_configuring) |
| 834 | return -EBUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 835 | /* |
| 836 | * Root is allowed to open raw volume zero even if it's not configured |
| 837 | * so array config can still work. Root is also allowed to open any |
| 838 | * volume that has a LUN ID, so it can issue IOCTL to reread the |
| 839 | * disk information. I don't think I really like this |
| 840 | * but I'm already using way to many device nodes to claim another one |
| 841 | * for "raw controller". |
| 842 | */ |
Mike Miller | 7a06f78 | 2006-12-06 20:35:08 -0800 | [diff] [blame] | 843 | if (drv->heads == 0) { |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 844 | if (MINOR(bdev->bd_dev) != 0) { /* not node 0? */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 845 | /* if not node 0 make sure it is a partition = 0 */ |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 846 | if (MINOR(bdev->bd_dev) & 0x0f) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 847 | return -ENXIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 848 | /* if it is, make sure we have a LUN ID */ |
| 849 | } else if (drv->LunID == 0) { |
| 850 | return -ENXIO; |
| 851 | } |
| 852 | } |
| 853 | if (!capable(CAP_SYS_ADMIN)) |
| 854 | return -EPERM; |
| 855 | } |
| 856 | drv->usage_count++; |
| 857 | host->usage_count++; |
| 858 | return 0; |
| 859 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 860 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 861 | /* |
| 862 | * Close. Sync first. |
| 863 | */ |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 864 | static int cciss_release(struct gendisk *disk, fmode_t mode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 865 | { |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 866 | ctlr_info_t *host = get_host(disk); |
| 867 | drive_info_struct *drv = get_drv(disk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 868 | |
| 869 | #ifdef CCISS_DEBUG |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 870 | printk(KERN_DEBUG "cciss_release %s\n", disk->disk_name); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 871 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 872 | |
| 873 | drv->usage_count--; |
| 874 | host->usage_count--; |
| 875 | return 0; |
| 876 | } |
| 877 | |
| 878 | #ifdef CONFIG_COMPAT |
| 879 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 880 | static int do_ioctl(struct block_device *bdev, fmode_t mode, |
| 881 | unsigned cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 882 | { |
| 883 | int ret; |
| 884 | lock_kernel(); |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 885 | ret = cciss_ioctl(bdev, mode, cmd, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 886 | unlock_kernel(); |
| 887 | return ret; |
| 888 | } |
| 889 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 890 | static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode, |
| 891 | unsigned cmd, unsigned long arg); |
| 892 | static int cciss_ioctl32_big_passthru(struct block_device *bdev, fmode_t mode, |
| 893 | unsigned cmd, unsigned long arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 894 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 895 | static int cciss_compat_ioctl(struct block_device *bdev, fmode_t mode, |
| 896 | unsigned cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 897 | { |
| 898 | switch (cmd) { |
| 899 | case CCISS_GETPCIINFO: |
| 900 | case CCISS_GETINTINFO: |
| 901 | case CCISS_SETINTINFO: |
| 902 | case CCISS_GETNODENAME: |
| 903 | case CCISS_SETNODENAME: |
| 904 | case CCISS_GETHEARTBEAT: |
| 905 | case CCISS_GETBUSTYPES: |
| 906 | case CCISS_GETFIRMVER: |
| 907 | case CCISS_GETDRIVVER: |
| 908 | case CCISS_REVALIDVOLS: |
| 909 | case CCISS_DEREGDISK: |
| 910 | case CCISS_REGNEWDISK: |
| 911 | case CCISS_REGNEWD: |
| 912 | case CCISS_RESCANDISK: |
| 913 | case CCISS_GETLUNINFO: |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 914 | return do_ioctl(bdev, mode, cmd, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 915 | |
| 916 | case CCISS_PASSTHRU32: |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 917 | return cciss_ioctl32_passthru(bdev, mode, cmd, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 918 | case CCISS_BIG_PASSTHRU32: |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 919 | return cciss_ioctl32_big_passthru(bdev, mode, cmd, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 920 | |
| 921 | default: |
| 922 | return -ENOIOCTLCMD; |
| 923 | } |
| 924 | } |
| 925 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 926 | static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode, |
| 927 | unsigned cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 928 | { |
| 929 | IOCTL32_Command_struct __user *arg32 = |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 930 | (IOCTL32_Command_struct __user *) arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 931 | IOCTL_Command_struct arg64; |
| 932 | IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64)); |
| 933 | int err; |
| 934 | u32 cp; |
| 935 | |
| 936 | err = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 937 | err |= |
| 938 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, |
| 939 | sizeof(arg64.LUN_info)); |
| 940 | err |= |
| 941 | copy_from_user(&arg64.Request, &arg32->Request, |
| 942 | sizeof(arg64.Request)); |
| 943 | err |= |
| 944 | copy_from_user(&arg64.error_info, &arg32->error_info, |
| 945 | sizeof(arg64.error_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 946 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
| 947 | err |= get_user(cp, &arg32->buf); |
| 948 | arg64.buf = compat_ptr(cp); |
| 949 | err |= copy_to_user(p, &arg64, sizeof(arg64)); |
| 950 | |
| 951 | if (err) |
| 952 | return -EFAULT; |
| 953 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 954 | err = do_ioctl(bdev, mode, CCISS_PASSTHRU, (unsigned long)p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 955 | if (err) |
| 956 | return err; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 957 | err |= |
| 958 | copy_in_user(&arg32->error_info, &p->error_info, |
| 959 | sizeof(arg32->error_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 960 | if (err) |
| 961 | return -EFAULT; |
| 962 | return err; |
| 963 | } |
| 964 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 965 | static int cciss_ioctl32_big_passthru(struct block_device *bdev, fmode_t mode, |
| 966 | unsigned cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 967 | { |
| 968 | BIG_IOCTL32_Command_struct __user *arg32 = |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 969 | (BIG_IOCTL32_Command_struct __user *) arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 970 | BIG_IOCTL_Command_struct arg64; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 971 | BIG_IOCTL_Command_struct __user *p = |
| 972 | compat_alloc_user_space(sizeof(arg64)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 973 | int err; |
| 974 | u32 cp; |
| 975 | |
| 976 | err = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 977 | err |= |
| 978 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, |
| 979 | sizeof(arg64.LUN_info)); |
| 980 | err |= |
| 981 | copy_from_user(&arg64.Request, &arg32->Request, |
| 982 | sizeof(arg64.Request)); |
| 983 | err |= |
| 984 | copy_from_user(&arg64.error_info, &arg32->error_info, |
| 985 | sizeof(arg64.error_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 986 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
| 987 | err |= get_user(arg64.malloc_size, &arg32->malloc_size); |
| 988 | err |= get_user(cp, &arg32->buf); |
| 989 | arg64.buf = compat_ptr(cp); |
| 990 | err |= copy_to_user(p, &arg64, sizeof(arg64)); |
| 991 | |
| 992 | if (err) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 993 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 994 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 995 | err = do_ioctl(bdev, mode, CCISS_BIG_PASSTHRU, (unsigned long)p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 996 | if (err) |
| 997 | return err; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 998 | err |= |
| 999 | copy_in_user(&arg32->error_info, &p->error_info, |
| 1000 | sizeof(arg32->error_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1001 | if (err) |
| 1002 | return -EFAULT; |
| 1003 | return err; |
| 1004 | } |
| 1005 | #endif |
Christoph Hellwig | a885c8c | 2006-01-08 01:02:50 -0800 | [diff] [blame] | 1006 | |
| 1007 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo) |
| 1008 | { |
| 1009 | drive_info_struct *drv = get_drv(bdev->bd_disk); |
| 1010 | |
| 1011 | if (!drv->cylinders) |
| 1012 | return -ENXIO; |
| 1013 | |
| 1014 | geo->heads = drv->heads; |
| 1015 | geo->sectors = drv->sectors; |
| 1016 | geo->cylinders = drv->cylinders; |
| 1017 | return 0; |
| 1018 | } |
| 1019 | |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 1020 | static void check_ioctl_unit_attention(ctlr_info_t *host, CommandList_struct *c) |
| 1021 | { |
| 1022 | if (c->err_info->CommandStatus == CMD_TARGET_STATUS && |
| 1023 | c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) |
| 1024 | (void)check_for_unit_attention(host, c); |
| 1025 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1026 | /* |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1027 | * ioctl |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1028 | */ |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1029 | static int cciss_ioctl(struct block_device *bdev, fmode_t mode, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1030 | unsigned int cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1031 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1032 | struct gendisk *disk = bdev->bd_disk; |
| 1033 | ctlr_info_t *host = get_host(disk); |
| 1034 | drive_info_struct *drv = get_drv(disk); |
| 1035 | int ctlr = host->ctlr; |
| 1036 | void __user *argp = (void __user *)arg; |
| 1037 | |
| 1038 | #ifdef CCISS_DEBUG |
| 1039 | 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] | 1040 | #endif /* CCISS_DEBUG */ |
| 1041 | |
| 1042 | switch (cmd) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1043 | case CCISS_GETPCIINFO: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1044 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1045 | cciss_pci_info_struct pciinfo; |
| 1046 | |
| 1047 | if (!arg) |
| 1048 | return -EINVAL; |
| 1049 | pciinfo.domain = pci_domain_nr(host->pdev->bus); |
| 1050 | pciinfo.bus = host->pdev->bus->number; |
| 1051 | pciinfo.dev_fn = host->pdev->devfn; |
| 1052 | pciinfo.board_id = host->board_id; |
| 1053 | if (copy_to_user |
| 1054 | (argp, &pciinfo, sizeof(cciss_pci_info_struct))) |
| 1055 | return -EFAULT; |
| 1056 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1057 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1058 | case CCISS_GETINTINFO: |
| 1059 | { |
| 1060 | cciss_coalint_struct intinfo; |
| 1061 | if (!arg) |
| 1062 | return -EINVAL; |
| 1063 | intinfo.delay = |
| 1064 | readl(&host->cfgtable->HostWrite.CoalIntDelay); |
| 1065 | intinfo.count = |
| 1066 | readl(&host->cfgtable->HostWrite.CoalIntCount); |
| 1067 | if (copy_to_user |
| 1068 | (argp, &intinfo, sizeof(cciss_coalint_struct))) |
| 1069 | return -EFAULT; |
| 1070 | return 0; |
| 1071 | } |
| 1072 | case CCISS_SETINTINFO: |
| 1073 | { |
| 1074 | cciss_coalint_struct intinfo; |
| 1075 | unsigned long flags; |
| 1076 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1077 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1078 | if (!arg) |
| 1079 | return -EINVAL; |
| 1080 | if (!capable(CAP_SYS_ADMIN)) |
| 1081 | return -EPERM; |
| 1082 | if (copy_from_user |
| 1083 | (&intinfo, argp, sizeof(cciss_coalint_struct))) |
| 1084 | return -EFAULT; |
| 1085 | if ((intinfo.delay == 0) && (intinfo.count == 0)) |
| 1086 | { |
| 1087 | // printk("cciss_ioctl: delay and count cannot be 0\n"); |
| 1088 | return -EINVAL; |
| 1089 | } |
| 1090 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); |
| 1091 | /* Update the field, and then ring the doorbell */ |
| 1092 | writel(intinfo.delay, |
| 1093 | &(host->cfgtable->HostWrite.CoalIntDelay)); |
| 1094 | writel(intinfo.count, |
| 1095 | &(host->cfgtable->HostWrite.CoalIntCount)); |
| 1096 | writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); |
| 1097 | |
| 1098 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { |
| 1099 | if (!(readl(host->vaddr + SA5_DOORBELL) |
| 1100 | & CFGTBL_ChangeReq)) |
| 1101 | break; |
| 1102 | /* delay and try again */ |
| 1103 | udelay(1000); |
| 1104 | } |
| 1105 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
| 1106 | if (i >= MAX_IOCTL_CONFIG_WAIT) |
| 1107 | return -EAGAIN; |
| 1108 | return 0; |
| 1109 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1110 | case CCISS_GETNODENAME: |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1111 | { |
| 1112 | NodeName_type NodeName; |
| 1113 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1114 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1115 | if (!arg) |
| 1116 | return -EINVAL; |
| 1117 | for (i = 0; i < 16; i++) |
| 1118 | NodeName[i] = |
| 1119 | readb(&host->cfgtable->ServerName[i]); |
| 1120 | if (copy_to_user(argp, NodeName, sizeof(NodeName_type))) |
| 1121 | return -EFAULT; |
| 1122 | return 0; |
| 1123 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1124 | case CCISS_SETNODENAME: |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1125 | { |
| 1126 | NodeName_type NodeName; |
| 1127 | unsigned long flags; |
| 1128 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1129 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1130 | if (!arg) |
| 1131 | return -EINVAL; |
| 1132 | if (!capable(CAP_SYS_ADMIN)) |
| 1133 | return -EPERM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1134 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1135 | if (copy_from_user |
| 1136 | (NodeName, argp, sizeof(NodeName_type))) |
| 1137 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1138 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1139 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1140 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1141 | /* Update the field, and then ring the doorbell */ |
| 1142 | for (i = 0; i < 16; i++) |
| 1143 | writeb(NodeName[i], |
| 1144 | &host->cfgtable->ServerName[i]); |
| 1145 | |
| 1146 | writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); |
| 1147 | |
| 1148 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { |
| 1149 | if (!(readl(host->vaddr + SA5_DOORBELL) |
| 1150 | & CFGTBL_ChangeReq)) |
| 1151 | break; |
| 1152 | /* delay and try again */ |
| 1153 | udelay(1000); |
| 1154 | } |
| 1155 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
| 1156 | if (i >= MAX_IOCTL_CONFIG_WAIT) |
| 1157 | return -EAGAIN; |
| 1158 | return 0; |
| 1159 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1160 | |
| 1161 | case CCISS_GETHEARTBEAT: |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1162 | { |
| 1163 | Heartbeat_type heartbeat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1164 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1165 | if (!arg) |
| 1166 | return -EINVAL; |
| 1167 | heartbeat = readl(&host->cfgtable->HeartBeat); |
| 1168 | if (copy_to_user |
| 1169 | (argp, &heartbeat, sizeof(Heartbeat_type))) |
| 1170 | return -EFAULT; |
| 1171 | return 0; |
| 1172 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1173 | case CCISS_GETBUSTYPES: |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1174 | { |
| 1175 | BusTypes_type BusTypes; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1176 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1177 | if (!arg) |
| 1178 | return -EINVAL; |
| 1179 | BusTypes = readl(&host->cfgtable->BusTypes); |
| 1180 | if (copy_to_user |
| 1181 | (argp, &BusTypes, sizeof(BusTypes_type))) |
| 1182 | return -EFAULT; |
| 1183 | return 0; |
| 1184 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1185 | case CCISS_GETFIRMVER: |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1186 | { |
| 1187 | FirmwareVer_type firmware; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1188 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1189 | if (!arg) |
| 1190 | return -EINVAL; |
| 1191 | memcpy(firmware, host->firm_ver, 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1192 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1193 | if (copy_to_user |
| 1194 | (argp, firmware, sizeof(FirmwareVer_type))) |
| 1195 | return -EFAULT; |
| 1196 | return 0; |
| 1197 | } |
| 1198 | case CCISS_GETDRIVVER: |
| 1199 | { |
| 1200 | DriverVer_type DriverVer = DRIVER_VERSION; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1201 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1202 | if (!arg) |
| 1203 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1204 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1205 | if (copy_to_user |
| 1206 | (argp, &DriverVer, sizeof(DriverVer_type))) |
| 1207 | return -EFAULT; |
| 1208 | return 0; |
| 1209 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1210 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1211 | case CCISS_DEREGDISK: |
| 1212 | case CCISS_REGNEWD: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1213 | case CCISS_REVALIDVOLS: |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 1214 | return rebuild_lun_table(host, 0, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1215 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1216 | case CCISS_GETLUNINFO:{ |
| 1217 | LogvolInfo_struct luninfo; |
| 1218 | |
| 1219 | luninfo.LunID = drv->LunID; |
| 1220 | luninfo.num_opens = drv->usage_count; |
| 1221 | luninfo.num_parts = 0; |
| 1222 | if (copy_to_user(argp, &luninfo, |
| 1223 | sizeof(LogvolInfo_struct))) |
| 1224 | return -EFAULT; |
| 1225 | return 0; |
| 1226 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1227 | case CCISS_PASSTHRU: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1228 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1229 | IOCTL_Command_struct iocommand; |
| 1230 | CommandList_struct *c; |
| 1231 | char *buff = NULL; |
| 1232 | u64bit temp64; |
| 1233 | unsigned long flags; |
Peter Zijlstra | 6e9a473 | 2006-09-30 23:28:10 -0700 | [diff] [blame] | 1234 | DECLARE_COMPLETION_ONSTACK(wait); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1235 | |
| 1236 | if (!arg) |
| 1237 | return -EINVAL; |
| 1238 | |
| 1239 | if (!capable(CAP_SYS_RAWIO)) |
| 1240 | return -EPERM; |
| 1241 | |
| 1242 | if (copy_from_user |
| 1243 | (&iocommand, argp, sizeof(IOCTL_Command_struct))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1244 | return -EFAULT; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1245 | if ((iocommand.buf_size < 1) && |
| 1246 | (iocommand.Request.Type.Direction != XFER_NONE)) { |
| 1247 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1248 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1249 | #if 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */ |
| 1250 | /* Check kmalloc limits */ |
| 1251 | if (iocommand.buf_size > 128000) |
| 1252 | return -EINVAL; |
| 1253 | #endif |
| 1254 | if (iocommand.buf_size > 0) { |
| 1255 | buff = kmalloc(iocommand.buf_size, GFP_KERNEL); |
| 1256 | if (buff == NULL) |
| 1257 | return -EFAULT; |
| 1258 | } |
| 1259 | if (iocommand.Request.Type.Direction == XFER_WRITE) { |
| 1260 | /* Copy the data into the buffer we created */ |
| 1261 | if (copy_from_user |
| 1262 | (buff, iocommand.buf, iocommand.buf_size)) { |
| 1263 | kfree(buff); |
| 1264 | return -EFAULT; |
| 1265 | } |
| 1266 | } else { |
| 1267 | memset(buff, 0, iocommand.buf_size); |
| 1268 | } |
| 1269 | if ((c = cmd_alloc(host, 0)) == NULL) { |
| 1270 | kfree(buff); |
| 1271 | return -ENOMEM; |
| 1272 | } |
| 1273 | // Fill in the command type |
| 1274 | c->cmd_type = CMD_IOCTL_PEND; |
| 1275 | // Fill in Command Header |
| 1276 | c->Header.ReplyQueue = 0; // unused in simple mode |
| 1277 | if (iocommand.buf_size > 0) // buffer to fill |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1278 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1279 | c->Header.SGList = 1; |
| 1280 | c->Header.SGTotal = 1; |
| 1281 | } else // no buffers to fill |
| 1282 | { |
| 1283 | c->Header.SGList = 0; |
| 1284 | c->Header.SGTotal = 0; |
| 1285 | } |
| 1286 | c->Header.LUN = iocommand.LUN_info; |
| 1287 | c->Header.Tag.lower = c->busaddr; // use the kernel address the cmd block for tag |
| 1288 | |
| 1289 | // Fill in Request block |
| 1290 | c->Request = iocommand.Request; |
| 1291 | |
| 1292 | // Fill in the scatter gather information |
| 1293 | if (iocommand.buf_size > 0) { |
| 1294 | temp64.val = pci_map_single(host->pdev, buff, |
| 1295 | iocommand.buf_size, |
| 1296 | PCI_DMA_BIDIRECTIONAL); |
| 1297 | c->SG[0].Addr.lower = temp64.val32.lower; |
| 1298 | c->SG[0].Addr.upper = temp64.val32.upper; |
| 1299 | c->SG[0].Len = iocommand.buf_size; |
| 1300 | c->SG[0].Ext = 0; // we are not chaining |
| 1301 | } |
| 1302 | c->waiting = &wait; |
| 1303 | |
| 1304 | /* Put the request on the tail of the request queue */ |
| 1305 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); |
| 1306 | addQ(&host->reqQ, c); |
| 1307 | host->Qdepth++; |
| 1308 | start_io(host); |
| 1309 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
| 1310 | |
| 1311 | wait_for_completion(&wait); |
| 1312 | |
| 1313 | /* unlock the buffers from DMA */ |
| 1314 | temp64.val32.lower = c->SG[0].Addr.lower; |
| 1315 | temp64.val32.upper = c->SG[0].Addr.upper; |
| 1316 | pci_unmap_single(host->pdev, (dma_addr_t) temp64.val, |
| 1317 | iocommand.buf_size, |
| 1318 | PCI_DMA_BIDIRECTIONAL); |
| 1319 | |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 1320 | check_ioctl_unit_attention(host, c); |
| 1321 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1322 | /* Copy the error information out */ |
| 1323 | iocommand.error_info = *(c->err_info); |
| 1324 | if (copy_to_user |
| 1325 | (argp, &iocommand, sizeof(IOCTL_Command_struct))) { |
| 1326 | kfree(buff); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1327 | cmd_free(host, c, 0); |
| 1328 | return -EFAULT; |
| 1329 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1330 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1331 | if (iocommand.Request.Type.Direction == XFER_READ) { |
| 1332 | /* Copy the data out of the buffer we created */ |
| 1333 | if (copy_to_user |
| 1334 | (iocommand.buf, buff, iocommand.buf_size)) { |
| 1335 | kfree(buff); |
| 1336 | cmd_free(host, c, 0); |
| 1337 | return -EFAULT; |
| 1338 | } |
| 1339 | } |
| 1340 | kfree(buff); |
| 1341 | cmd_free(host, c, 0); |
| 1342 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1343 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1344 | case CCISS_BIG_PASSTHRU:{ |
| 1345 | BIG_IOCTL_Command_struct *ioc; |
| 1346 | CommandList_struct *c; |
| 1347 | unsigned char **buff = NULL; |
| 1348 | int *buff_size = NULL; |
| 1349 | u64bit temp64; |
| 1350 | unsigned long flags; |
| 1351 | BYTE sg_used = 0; |
| 1352 | int status = 0; |
| 1353 | int i; |
Peter Zijlstra | 6e9a473 | 2006-09-30 23:28:10 -0700 | [diff] [blame] | 1354 | DECLARE_COMPLETION_ONSTACK(wait); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1355 | __u32 left; |
| 1356 | __u32 sz; |
| 1357 | BYTE __user *data_ptr; |
| 1358 | |
| 1359 | if (!arg) |
| 1360 | return -EINVAL; |
| 1361 | if (!capable(CAP_SYS_RAWIO)) |
| 1362 | return -EPERM; |
| 1363 | ioc = (BIG_IOCTL_Command_struct *) |
| 1364 | kmalloc(sizeof(*ioc), GFP_KERNEL); |
| 1365 | if (!ioc) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1366 | status = -ENOMEM; |
| 1367 | goto cleanup1; |
| 1368 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1369 | if (copy_from_user(ioc, argp, sizeof(*ioc))) { |
| 1370 | status = -EFAULT; |
| 1371 | goto cleanup1; |
| 1372 | } |
| 1373 | if ((ioc->buf_size < 1) && |
| 1374 | (ioc->Request.Type.Direction != XFER_NONE)) { |
| 1375 | status = -EINVAL; |
| 1376 | goto cleanup1; |
| 1377 | } |
| 1378 | /* Check kmalloc limits using all SGs */ |
| 1379 | if (ioc->malloc_size > MAX_KMALLOC_SIZE) { |
| 1380 | status = -EINVAL; |
| 1381 | goto cleanup1; |
| 1382 | } |
| 1383 | if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) { |
| 1384 | status = -EINVAL; |
| 1385 | goto cleanup1; |
| 1386 | } |
| 1387 | buff = |
| 1388 | kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL); |
| 1389 | if (!buff) { |
| 1390 | status = -ENOMEM; |
| 1391 | goto cleanup1; |
| 1392 | } |
Robert P. J. Day | 5cbded5 | 2006-12-13 00:35:56 -0800 | [diff] [blame] | 1393 | buff_size = kmalloc(MAXSGENTRIES * sizeof(int), |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1394 | GFP_KERNEL); |
| 1395 | if (!buff_size) { |
| 1396 | status = -ENOMEM; |
| 1397 | goto cleanup1; |
| 1398 | } |
| 1399 | left = ioc->buf_size; |
| 1400 | data_ptr = ioc->buf; |
| 1401 | while (left) { |
| 1402 | sz = (left > |
| 1403 | ioc->malloc_size) ? ioc-> |
| 1404 | malloc_size : left; |
| 1405 | buff_size[sg_used] = sz; |
| 1406 | buff[sg_used] = kmalloc(sz, GFP_KERNEL); |
| 1407 | if (buff[sg_used] == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1408 | status = -ENOMEM; |
Jens Axboe | 15534d3 | 2005-11-18 22:02:44 +0100 | [diff] [blame] | 1409 | goto cleanup1; |
| 1410 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1411 | if (ioc->Request.Type.Direction == XFER_WRITE) { |
| 1412 | if (copy_from_user |
| 1413 | (buff[sg_used], data_ptr, sz)) { |
Nikanth Karthikesan | f7108f9 | 2008-08-04 10:56:07 +0200 | [diff] [blame] | 1414 | status = -EFAULT; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1415 | goto cleanup1; |
| 1416 | } |
| 1417 | } else { |
| 1418 | memset(buff[sg_used], 0, sz); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1419 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1420 | left -= sz; |
| 1421 | data_ptr += sz; |
| 1422 | sg_used++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1423 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1424 | if ((c = cmd_alloc(host, 0)) == NULL) { |
| 1425 | status = -ENOMEM; |
| 1426 | goto cleanup1; |
| 1427 | } |
| 1428 | c->cmd_type = CMD_IOCTL_PEND; |
| 1429 | c->Header.ReplyQueue = 0; |
| 1430 | |
| 1431 | if (ioc->buf_size > 0) { |
| 1432 | c->Header.SGList = sg_used; |
| 1433 | c->Header.SGTotal = sg_used; |
| 1434 | } else { |
| 1435 | c->Header.SGList = 0; |
| 1436 | c->Header.SGTotal = 0; |
| 1437 | } |
| 1438 | c->Header.LUN = ioc->LUN_info; |
| 1439 | c->Header.Tag.lower = c->busaddr; |
| 1440 | |
| 1441 | c->Request = ioc->Request; |
| 1442 | if (ioc->buf_size > 0) { |
| 1443 | int i; |
| 1444 | for (i = 0; i < sg_used; i++) { |
| 1445 | temp64.val = |
| 1446 | pci_map_single(host->pdev, buff[i], |
| 1447 | buff_size[i], |
| 1448 | PCI_DMA_BIDIRECTIONAL); |
| 1449 | c->SG[i].Addr.lower = |
| 1450 | temp64.val32.lower; |
| 1451 | c->SG[i].Addr.upper = |
| 1452 | temp64.val32.upper; |
| 1453 | c->SG[i].Len = buff_size[i]; |
| 1454 | c->SG[i].Ext = 0; /* we are not chaining */ |
| 1455 | } |
| 1456 | } |
| 1457 | c->waiting = &wait; |
| 1458 | /* Put the request on the tail of the request queue */ |
| 1459 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); |
| 1460 | addQ(&host->reqQ, c); |
| 1461 | host->Qdepth++; |
| 1462 | start_io(host); |
| 1463 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
| 1464 | wait_for_completion(&wait); |
| 1465 | /* unlock the buffers from DMA */ |
| 1466 | for (i = 0; i < sg_used; i++) { |
| 1467 | temp64.val32.lower = c->SG[i].Addr.lower; |
| 1468 | temp64.val32.upper = c->SG[i].Addr.upper; |
| 1469 | pci_unmap_single(host->pdev, |
| 1470 | (dma_addr_t) temp64.val, buff_size[i], |
| 1471 | PCI_DMA_BIDIRECTIONAL); |
| 1472 | } |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 1473 | check_ioctl_unit_attention(host, c); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1474 | /* Copy the error information out */ |
| 1475 | ioc->error_info = *(c->err_info); |
| 1476 | if (copy_to_user(argp, ioc, sizeof(*ioc))) { |
| 1477 | cmd_free(host, c, 0); |
| 1478 | status = -EFAULT; |
| 1479 | goto cleanup1; |
| 1480 | } |
| 1481 | if (ioc->Request.Type.Direction == XFER_READ) { |
| 1482 | /* Copy the data out of the buffer we created */ |
| 1483 | BYTE __user *ptr = ioc->buf; |
| 1484 | for (i = 0; i < sg_used; i++) { |
| 1485 | if (copy_to_user |
| 1486 | (ptr, buff[i], buff_size[i])) { |
| 1487 | cmd_free(host, c, 0); |
| 1488 | status = -EFAULT; |
| 1489 | goto cleanup1; |
| 1490 | } |
| 1491 | ptr += buff_size[i]; |
| 1492 | } |
| 1493 | } |
| 1494 | cmd_free(host, c, 0); |
| 1495 | status = 0; |
| 1496 | cleanup1: |
| 1497 | if (buff) { |
| 1498 | for (i = 0; i < sg_used; i++) |
| 1499 | kfree(buff[i]); |
| 1500 | kfree(buff); |
| 1501 | } |
| 1502 | kfree(buff_size); |
| 1503 | kfree(ioc); |
| 1504 | return status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1505 | } |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 1506 | |
| 1507 | /* scsi_cmd_ioctl handles these, below, though some are not */ |
| 1508 | /* very meaningful for cciss. SG_IO is the main one people want. */ |
| 1509 | |
| 1510 | case SG_GET_VERSION_NUM: |
| 1511 | case SG_SET_TIMEOUT: |
| 1512 | case SG_GET_TIMEOUT: |
| 1513 | case SG_GET_RESERVED_SIZE: |
| 1514 | case SG_SET_RESERVED_SIZE: |
| 1515 | case SG_EMULATED_HOST: |
| 1516 | case SG_IO: |
| 1517 | case SCSI_IOCTL_SEND_COMMAND: |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1518 | return scsi_cmd_ioctl(disk->queue, disk, mode, cmd, argp); |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 1519 | |
| 1520 | /* scsi_cmd_ioctl would normally handle these, below, but */ |
| 1521 | /* they aren't a good fit for cciss, as CD-ROMs are */ |
| 1522 | /* not supported, and we don't have any bus/target/lun */ |
| 1523 | /* which we present to the kernel. */ |
| 1524 | |
| 1525 | case CDROM_SEND_PACKET: |
| 1526 | case CDROMCLOSETRAY: |
| 1527 | case CDROMEJECT: |
| 1528 | case SCSI_IOCTL_GET_IDLUN: |
| 1529 | case SCSI_IOCTL_GET_BUS_NUMBER: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1530 | default: |
| 1531 | return -ENOTTY; |
| 1532 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1533 | } |
| 1534 | |
Jens Axboe | 7b30f09 | 2006-07-25 15:02:48 +0200 | [diff] [blame] | 1535 | static void cciss_check_queues(ctlr_info_t *h) |
| 1536 | { |
| 1537 | int start_queue = h->next_to_run; |
| 1538 | int i; |
| 1539 | |
| 1540 | /* check to see if we have maxed out the number of commands that can |
| 1541 | * be placed on the queue. If so then exit. We do this check here |
| 1542 | * in case the interrupt we serviced was from an ioctl and did not |
| 1543 | * free any new commands. |
| 1544 | */ |
Mike Miller | f880632 | 2006-12-06 20:35:01 -0800 | [diff] [blame] | 1545 | 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] | 1546 | return; |
| 1547 | |
| 1548 | /* We have room on the queue for more commands. Now we need to queue |
| 1549 | * them up. We will also keep track of the next queue to run so |
| 1550 | * that every queue gets a chance to be started first. |
| 1551 | */ |
| 1552 | for (i = 0; i < h->highest_lun + 1; i++) { |
| 1553 | int curr_queue = (start_queue + i) % (h->highest_lun + 1); |
| 1554 | /* make sure the disk has been added and the drive is real |
| 1555 | * because this can be called from the middle of init_one. |
| 1556 | */ |
| 1557 | if (!(h->drv[curr_queue].queue) || !(h->drv[curr_queue].heads)) |
| 1558 | continue; |
| 1559 | blk_start_queue(h->gendisk[curr_queue]->queue); |
| 1560 | |
| 1561 | /* check to see if we have maxed out the number of commands |
| 1562 | * that can be placed on the queue. |
| 1563 | */ |
Mike Miller | f880632 | 2006-12-06 20:35:01 -0800 | [diff] [blame] | 1564 | 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] | 1565 | if (curr_queue == start_queue) { |
| 1566 | h->next_to_run = |
| 1567 | (start_queue + 1) % (h->highest_lun + 1); |
| 1568 | break; |
| 1569 | } else { |
| 1570 | h->next_to_run = curr_queue; |
| 1571 | break; |
| 1572 | } |
Jens Axboe | 7b30f09 | 2006-07-25 15:02:48 +0200 | [diff] [blame] | 1573 | } |
| 1574 | } |
| 1575 | } |
| 1576 | |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1577 | static void cciss_softirq_done(struct request *rq) |
| 1578 | { |
| 1579 | CommandList_struct *cmd = rq->completion_data; |
| 1580 | ctlr_info_t *h = hba[cmd->ctlr]; |
| 1581 | unsigned long flags; |
| 1582 | u64bit temp64; |
| 1583 | int i, ddir; |
| 1584 | |
| 1585 | if (cmd->Request.Type.Direction == XFER_READ) |
| 1586 | ddir = PCI_DMA_FROMDEVICE; |
| 1587 | else |
| 1588 | ddir = PCI_DMA_TODEVICE; |
| 1589 | |
| 1590 | /* command did not need to be retried */ |
| 1591 | /* unmap the DMA mapping for all the scatter gather elements */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1592 | for (i = 0; i < cmd->Header.SGList; i++) { |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1593 | temp64.val32.lower = cmd->SG[i].Addr.lower; |
| 1594 | temp64.val32.upper = cmd->SG[i].Addr.upper; |
| 1595 | pci_unmap_page(h->pdev, temp64.val, cmd->SG[i].Len, ddir); |
| 1596 | } |
| 1597 | |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1598 | #ifdef CCISS_DEBUG |
| 1599 | printk("Done with %p\n", rq); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1600 | #endif /* CCISS_DEBUG */ |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1601 | |
Tejun Heo | c3a4d78 | 2009-05-07 22:24:37 +0900 | [diff] [blame] | 1602 | /* set the residual count for pc requests */ |
Jens Axboe | ac44e5b | 2009-03-27 10:43:52 +0100 | [diff] [blame] | 1603 | if (blk_pc_request(rq)) |
Tejun Heo | c3a4d78 | 2009-05-07 22:24:37 +0900 | [diff] [blame] | 1604 | rq->resid_len = cmd->err_info->ResidualCnt; |
Jens Axboe | ac44e5b | 2009-03-27 10:43:52 +0100 | [diff] [blame] | 1605 | |
Tejun Heo | c3a4d78 | 2009-05-07 22:24:37 +0900 | [diff] [blame] | 1606 | blk_end_request_all(rq, (rq->errors == 0) ? 0 : -EIO); |
Kiyoshi Ueda | 3daeea2 | 2007-12-11 17:50:03 -0500 | [diff] [blame] | 1607 | |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1608 | spin_lock_irqsave(&h->lock, flags); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1609 | cmd_free(h, cmd, 1); |
Jens Axboe | 7b30f09 | 2006-07-25 15:02:48 +0200 | [diff] [blame] | 1610 | cciss_check_queues(h); |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1611 | spin_unlock_irqrestore(&h->lock, flags); |
| 1612 | } |
| 1613 | |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 1614 | static void log_unit_to_scsi3addr(ctlr_info_t *h, unsigned char scsi3addr[], |
| 1615 | uint32_t log_unit) |
| 1616 | { |
| 1617 | log_unit = h->drv[log_unit].LunID & 0x03fff; |
| 1618 | memset(&scsi3addr[4], 0, 4); |
| 1619 | memcpy(&scsi3addr[0], &log_unit, 4); |
| 1620 | scsi3addr[3] |= 0x40; |
| 1621 | } |
| 1622 | |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 1623 | /* This function gets the SCSI vendor, model, and revision of a logical drive |
| 1624 | * via the inquiry page 0. Model, vendor, and rev are set to empty strings if |
| 1625 | * they cannot be read. |
| 1626 | */ |
| 1627 | static void cciss_get_device_descr(int ctlr, int logvol, int withirq, |
| 1628 | char *vendor, char *model, char *rev) |
| 1629 | { |
| 1630 | int rc; |
| 1631 | InquiryData_struct *inq_buf; |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 1632 | unsigned char scsi3addr[8]; |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 1633 | |
| 1634 | *vendor = '\0'; |
| 1635 | *model = '\0'; |
| 1636 | *rev = '\0'; |
| 1637 | |
| 1638 | inq_buf = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
| 1639 | if (!inq_buf) |
| 1640 | return; |
| 1641 | |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 1642 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 1643 | if (withirq) |
| 1644 | rc = sendcmd_withirq(CISS_INQUIRY, ctlr, inq_buf, |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 1645 | sizeof(InquiryData_struct), 0, |
| 1646 | scsi3addr, TYPE_CMD); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 1647 | else |
| 1648 | rc = sendcmd(CISS_INQUIRY, ctlr, inq_buf, |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 1649 | sizeof(InquiryData_struct), 0, |
| 1650 | scsi3addr, TYPE_CMD); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 1651 | if (rc == IO_OK) { |
| 1652 | memcpy(vendor, &inq_buf->data_byte[8], VENDOR_LEN); |
| 1653 | vendor[VENDOR_LEN] = '\0'; |
| 1654 | memcpy(model, &inq_buf->data_byte[16], MODEL_LEN); |
| 1655 | model[MODEL_LEN] = '\0'; |
| 1656 | memcpy(rev, &inq_buf->data_byte[32], REV_LEN); |
| 1657 | rev[REV_LEN] = '\0'; |
| 1658 | } |
| 1659 | |
| 1660 | kfree(inq_buf); |
| 1661 | return; |
| 1662 | } |
| 1663 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1664 | /* This function gets the serial number of a logical drive via |
| 1665 | * inquiry page 0x83. Serial no. is 16 bytes. If the serial |
| 1666 | * number cannot be had, for whatever reason, 16 bytes of 0xff |
| 1667 | * are returned instead. |
| 1668 | */ |
| 1669 | static void cciss_get_serial_no(int ctlr, int logvol, int withirq, |
| 1670 | unsigned char *serial_no, int buflen) |
| 1671 | { |
| 1672 | #define PAGE_83_INQ_BYTES 64 |
| 1673 | int rc; |
| 1674 | unsigned char *buf; |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 1675 | unsigned char scsi3addr[8]; |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1676 | |
| 1677 | if (buflen > 16) |
| 1678 | buflen = 16; |
| 1679 | memset(serial_no, 0xff, buflen); |
| 1680 | buf = kzalloc(PAGE_83_INQ_BYTES, GFP_KERNEL); |
| 1681 | if (!buf) |
| 1682 | return; |
| 1683 | memset(serial_no, 0, buflen); |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 1684 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1685 | if (withirq) |
| 1686 | rc = sendcmd_withirq(CISS_INQUIRY, ctlr, buf, |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 1687 | PAGE_83_INQ_BYTES, 0x83, scsi3addr, TYPE_CMD); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1688 | else |
| 1689 | rc = sendcmd(CISS_INQUIRY, ctlr, buf, |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 1690 | PAGE_83_INQ_BYTES, 0x83, scsi3addr, TYPE_CMD); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1691 | if (rc == IO_OK) |
| 1692 | memcpy(serial_no, &buf[8], buflen); |
| 1693 | kfree(buf); |
| 1694 | return; |
| 1695 | } |
| 1696 | |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 1697 | /* |
| 1698 | * cciss_add_disk sets up the block device queue for a logical drive |
| 1699 | */ |
| 1700 | static int cciss_add_disk(ctlr_info_t *h, struct gendisk *disk, |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1701 | int drv_index) |
| 1702 | { |
| 1703 | disk->queue = blk_init_queue(do_cciss_request, &h->lock); |
Stephen M. Cameron | e8074f7 | 2009-09-17 13:47:24 -0500 | [diff] [blame] | 1704 | if (!disk->queue) |
| 1705 | goto init_queue_failure; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1706 | sprintf(disk->disk_name, "cciss/c%dd%d", h->ctlr, drv_index); |
| 1707 | disk->major = h->major; |
| 1708 | disk->first_minor = drv_index << NWD_SHIFT; |
| 1709 | disk->fops = &cciss_fops; |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 1710 | if (h->drv[drv_index].dev == NULL) { |
| 1711 | if (cciss_create_ld_sysfs_entry(h, drv_index)) |
| 1712 | goto cleanup_queue; |
| 1713 | } |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1714 | disk->private_data = &h->drv[drv_index]; |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 1715 | disk->driverfs_dev = h->drv[drv_index].dev; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1716 | |
| 1717 | /* Set up queue information */ |
| 1718 | blk_queue_bounce_limit(disk->queue, h->pdev->dma_mask); |
| 1719 | |
| 1720 | /* This is a hardware imposed limit. */ |
| 1721 | blk_queue_max_hw_segments(disk->queue, MAXSGENTRIES); |
| 1722 | |
| 1723 | /* This is a limit in the driver and could be eliminated. */ |
| 1724 | blk_queue_max_phys_segments(disk->queue, MAXSGENTRIES); |
| 1725 | |
| 1726 | blk_queue_max_sectors(disk->queue, h->cciss_max_sectors); |
| 1727 | |
| 1728 | blk_queue_softirq_done(disk->queue, cciss_softirq_done); |
| 1729 | |
| 1730 | disk->queue->queuedata = h; |
| 1731 | |
Martin K. Petersen | e1defc4 | 2009-05-22 17:17:49 -0400 | [diff] [blame] | 1732 | blk_queue_logical_block_size(disk->queue, |
| 1733 | h->drv[drv_index].block_size); |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1734 | |
| 1735 | /* Make sure all queue data is written out before */ |
| 1736 | /* setting h->drv[drv_index].queue, as setting this */ |
| 1737 | /* allows the interrupt handler to start the queue */ |
| 1738 | wmb(); |
| 1739 | h->drv[drv_index].queue = disk->queue; |
| 1740 | add_disk(disk); |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 1741 | return 0; |
| 1742 | |
| 1743 | cleanup_queue: |
| 1744 | blk_cleanup_queue(disk->queue); |
| 1745 | disk->queue = NULL; |
Stephen M. Cameron | e8074f7 | 2009-09-17 13:47:24 -0500 | [diff] [blame] | 1746 | init_queue_failure: |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 1747 | return -1; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1748 | } |
| 1749 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1750 | /* 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] | 1751 | * If the usage_count is zero and it is a heretofore unknown drive, or, |
| 1752 | * the drive's capacity, geometry, or serial number has changed, |
| 1753 | * then the drive information will be updated and the disk will be |
| 1754 | * re-registered with the kernel. If these conditions don't hold, |
| 1755 | * then it will be left alone for the next reboot. The exception to this |
| 1756 | * is disk 0 which will always be left registered with the kernel since it |
| 1757 | * is also the controller node. Any changes to disk 0 will show up on |
| 1758 | * the next reboot. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1759 | */ |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 1760 | static void cciss_update_drive_info(int ctlr, int drv_index, int first_time, |
| 1761 | int via_ioctl) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1762 | { |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1763 | ctlr_info_t *h = hba[ctlr]; |
| 1764 | struct gendisk *disk; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1765 | InquiryData_struct *inq_buff = NULL; |
| 1766 | unsigned int block_size; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 1767 | sector_t total_size; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1768 | unsigned long flags = 0; |
| 1769 | int ret = 0; |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1770 | drive_info_struct *drvinfo; |
| 1771 | |
| 1772 | /* Get information about the disk and modify the driver structure */ |
| 1773 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
| 1774 | drvinfo = kmalloc(sizeof(*drvinfo), GFP_KERNEL); |
| 1775 | if (inq_buff == NULL || drvinfo == NULL) |
| 1776 | goto mem_msg; |
| 1777 | |
| 1778 | /* testing to see if 16-byte CDBs are already being used */ |
| 1779 | if (h->cciss_read == CCISS_READ_16) { |
| 1780 | cciss_read_capacity_16(h->ctlr, drv_index, 1, |
| 1781 | &total_size, &block_size); |
| 1782 | |
| 1783 | } else { |
| 1784 | cciss_read_capacity(ctlr, drv_index, 1, |
| 1785 | &total_size, &block_size); |
| 1786 | |
| 1787 | /* if read_capacity returns all F's this volume is >2TB */ |
| 1788 | /* in size so we switch to 16-byte CDB's for all */ |
| 1789 | /* read/write ops */ |
| 1790 | if (total_size == 0xFFFFFFFFULL) { |
| 1791 | cciss_read_capacity_16(ctlr, drv_index, 1, |
| 1792 | &total_size, &block_size); |
| 1793 | h->cciss_read = CCISS_READ_16; |
| 1794 | h->cciss_write = CCISS_WRITE_16; |
| 1795 | } else { |
| 1796 | h->cciss_read = CCISS_READ_10; |
| 1797 | h->cciss_write = CCISS_WRITE_10; |
| 1798 | } |
| 1799 | } |
| 1800 | |
| 1801 | cciss_geometry_inquiry(ctlr, drv_index, 1, total_size, block_size, |
| 1802 | inq_buff, drvinfo); |
| 1803 | drvinfo->block_size = block_size; |
| 1804 | drvinfo->nr_blocks = total_size + 1; |
| 1805 | |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 1806 | cciss_get_device_descr(ctlr, drv_index, 1, drvinfo->vendor, |
| 1807 | drvinfo->model, drvinfo->rev); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1808 | cciss_get_serial_no(ctlr, drv_index, 1, drvinfo->serial_no, |
| 1809 | sizeof(drvinfo->serial_no)); |
| 1810 | |
| 1811 | /* Is it the same disk we already know, and nothing's changed? */ |
| 1812 | if (h->drv[drv_index].raid_level != -1 && |
| 1813 | ((memcmp(drvinfo->serial_no, |
| 1814 | h->drv[drv_index].serial_no, 16) == 0) && |
| 1815 | drvinfo->block_size == h->drv[drv_index].block_size && |
| 1816 | drvinfo->nr_blocks == h->drv[drv_index].nr_blocks && |
| 1817 | drvinfo->heads == h->drv[drv_index].heads && |
| 1818 | drvinfo->sectors == h->drv[drv_index].sectors && |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1819 | drvinfo->cylinders == h->drv[drv_index].cylinders)) |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1820 | /* The disk is unchanged, nothing to update */ |
| 1821 | goto freeret; |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1822 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1823 | /* If we get here it's not the same disk, or something's changed, |
| 1824 | * so we need to * deregister it, and re-register it, if it's not |
| 1825 | * in use. |
| 1826 | * If the disk already exists then deregister it before proceeding |
| 1827 | * (unless it's the first disk (for the controller node). |
| 1828 | */ |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1829 | if (h->drv[drv_index].raid_level != -1 && drv_index != 0) { |
| 1830 | printk(KERN_WARNING "disk %d has changed.\n", drv_index); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1831 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
| 1832 | h->drv[drv_index].busy_configuring = 1; |
| 1833 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
scameron@beardog.cca.cpqcorp.net | e14ac67 | 2008-04-17 13:19:03 +0200 | [diff] [blame] | 1834 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1835 | /* deregister_disk sets h->drv[drv_index].queue = NULL |
| 1836 | * which keeps the interrupt handler from starting |
| 1837 | * the queue. |
| 1838 | */ |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 1839 | ret = deregister_disk(h, drv_index, 0, via_ioctl); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1840 | h->drv[drv_index].busy_configuring = 0; |
| 1841 | } |
| 1842 | |
| 1843 | /* If the disk is in use return */ |
| 1844 | if (ret) |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1845 | goto freeret; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1846 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1847 | /* Save the new information from cciss_geometry_inquiry |
| 1848 | * and serial number inquiry. |
| 1849 | */ |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1850 | h->drv[drv_index].block_size = drvinfo->block_size; |
| 1851 | h->drv[drv_index].nr_blocks = drvinfo->nr_blocks; |
| 1852 | h->drv[drv_index].heads = drvinfo->heads; |
| 1853 | h->drv[drv_index].sectors = drvinfo->sectors; |
| 1854 | h->drv[drv_index].cylinders = drvinfo->cylinders; |
| 1855 | h->drv[drv_index].raid_level = drvinfo->raid_level; |
| 1856 | memcpy(h->drv[drv_index].serial_no, drvinfo->serial_no, 16); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 1857 | memcpy(h->drv[drv_index].vendor, drvinfo->vendor, VENDOR_LEN + 1); |
| 1858 | memcpy(h->drv[drv_index].model, drvinfo->model, MODEL_LEN + 1); |
| 1859 | memcpy(h->drv[drv_index].rev, drvinfo->rev, REV_LEN + 1); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1860 | |
| 1861 | ++h->num_luns; |
| 1862 | disk = h->gendisk[drv_index]; |
| 1863 | set_capacity(disk, h->drv[drv_index].nr_blocks); |
| 1864 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1865 | /* If it's not disk 0 (drv_index != 0) |
| 1866 | * or if it was disk 0, but there was previously |
| 1867 | * no actual corresponding configured logical drive |
| 1868 | * (raid_leve == -1) then we want to update the |
| 1869 | * logical drive's information. |
| 1870 | */ |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 1871 | if (drv_index || first_time) { |
| 1872 | if (cciss_add_disk(h, disk, drv_index) != 0) { |
| 1873 | cciss_free_gendisk(h, drv_index); |
| 1874 | printk(KERN_WARNING "cciss:%d could not update " |
| 1875 | "disk %d\n", h->ctlr, drv_index); |
| 1876 | --h->num_luns; |
| 1877 | } |
| 1878 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1879 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1880 | freeret: |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1881 | kfree(inq_buff); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1882 | kfree(drvinfo); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1883 | return; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1884 | mem_msg: |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1885 | printk(KERN_ERR "cciss: out of memory\n"); |
| 1886 | goto freeret; |
| 1887 | } |
| 1888 | |
| 1889 | /* This function will find the first index of the controllers drive array |
| 1890 | * that has a -1 for the raid_level and will return that index. This is |
| 1891 | * where new drives will be added. If the index to be returned is greater |
| 1892 | * than the highest_lun index for the controller then highest_lun is set |
| 1893 | * to this new index. If there are no available indexes then -1 is returned. |
Mike Miller | eece695 | 2008-08-04 11:54:53 +0200 | [diff] [blame] | 1894 | * "controller_node" is used to know if this is a real logical drive, or just |
| 1895 | * the controller node, which determines if this counts towards highest_lun. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1896 | */ |
Mike Miller | eece695 | 2008-08-04 11:54:53 +0200 | [diff] [blame] | 1897 | static int cciss_find_free_drive_index(int ctlr, int controller_node) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1898 | { |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1899 | int i; |
| 1900 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1901 | for (i = 0; i < CISS_MAX_LUN; i++) { |
| 1902 | if (hba[ctlr]->drv[i].raid_level == -1) { |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1903 | if (i > hba[ctlr]->highest_lun) |
Mike Miller | eece695 | 2008-08-04 11:54:53 +0200 | [diff] [blame] | 1904 | if (!controller_node) |
| 1905 | hba[ctlr]->highest_lun = i; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1906 | return i; |
| 1907 | } |
| 1908 | } |
| 1909 | return -1; |
| 1910 | } |
| 1911 | |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 1912 | static void cciss_free_gendisk(ctlr_info_t *h, int drv_index) |
| 1913 | { |
| 1914 | put_disk(h->gendisk[drv_index]); |
| 1915 | h->gendisk[drv_index] = NULL; |
| 1916 | } |
| 1917 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1918 | /* cciss_add_gendisk finds a free hba[]->drv structure |
| 1919 | * and allocates a gendisk if needed, and sets the lunid |
| 1920 | * in the drvinfo structure. It returns the index into |
| 1921 | * the ->drv[] array, or -1 if none are free. |
| 1922 | * is_controller_node indicates whether highest_lun should |
| 1923 | * count this disk, or if it's only being added to provide |
| 1924 | * a means to talk to the controller in case no logical |
| 1925 | * drives have yet been configured. |
| 1926 | */ |
Mike Miller | eece695 | 2008-08-04 11:54:53 +0200 | [diff] [blame] | 1927 | static int cciss_add_gendisk(ctlr_info_t *h, __u32 lunid, int controller_node) |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1928 | { |
| 1929 | int drv_index; |
| 1930 | |
Mike Miller | eece695 | 2008-08-04 11:54:53 +0200 | [diff] [blame] | 1931 | drv_index = cciss_find_free_drive_index(h->ctlr, controller_node); |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1932 | if (drv_index == -1) |
| 1933 | return -1; |
Stephen M. Cameron | 8ce5196 | 2009-09-17 13:47:34 -0500 | [diff] [blame] | 1934 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1935 | /*Check if the gendisk needs to be allocated */ |
| 1936 | if (!h->gendisk[drv_index]) { |
| 1937 | h->gendisk[drv_index] = |
| 1938 | alloc_disk(1 << NWD_SHIFT); |
| 1939 | if (!h->gendisk[drv_index]) { |
| 1940 | printk(KERN_ERR "cciss%d: could not " |
| 1941 | "allocate a new disk %d\n", |
| 1942 | h->ctlr, drv_index); |
| 1943 | return -1; |
| 1944 | } |
| 1945 | } |
| 1946 | h->drv[drv_index].LunID = lunid; |
Stephen M. Cameron | 097d026 | 2009-09-17 13:47:19 -0500 | [diff] [blame] | 1947 | if (h->drv[drv_index].dev == NULL) { |
| 1948 | if (cciss_create_ld_sysfs_entry(h, drv_index)) |
| 1949 | goto err_free_disk; |
| 1950 | } |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1951 | /* Don't need to mark this busy because nobody */ |
| 1952 | /* else knows about this disk yet to contend */ |
| 1953 | /* for access to it. */ |
| 1954 | h->drv[drv_index].busy_configuring = 0; |
| 1955 | wmb(); |
| 1956 | return drv_index; |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 1957 | |
| 1958 | err_free_disk: |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 1959 | cciss_free_gendisk(h, drv_index); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 1960 | return -1; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1961 | } |
| 1962 | |
| 1963 | /* This is for the special case of a controller which |
| 1964 | * has no logical drives. In this case, we still need |
| 1965 | * to register a disk so the controller can be accessed |
| 1966 | * by the Array Config Utility. |
| 1967 | */ |
| 1968 | static void cciss_add_controller_node(ctlr_info_t *h) |
| 1969 | { |
| 1970 | struct gendisk *disk; |
| 1971 | int drv_index; |
| 1972 | |
| 1973 | if (h->gendisk[0] != NULL) /* already did this? Then bail. */ |
| 1974 | return; |
| 1975 | |
Mike Miller | eece695 | 2008-08-04 11:54:53 +0200 | [diff] [blame] | 1976 | drv_index = cciss_add_gendisk(h, 0, 1); |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 1977 | if (drv_index == -1) |
| 1978 | goto error; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1979 | h->drv[drv_index].block_size = 512; |
| 1980 | h->drv[drv_index].nr_blocks = 0; |
| 1981 | h->drv[drv_index].heads = 0; |
| 1982 | h->drv[drv_index].sectors = 0; |
| 1983 | h->drv[drv_index].cylinders = 0; |
| 1984 | h->drv[drv_index].raid_level = -1; |
| 1985 | memset(h->drv[drv_index].serial_no, 0, 16); |
| 1986 | disk = h->gendisk[drv_index]; |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 1987 | if (cciss_add_disk(h, disk, drv_index) == 0) |
| 1988 | return; |
| 1989 | cciss_free_gendisk(h, drv_index); |
| 1990 | error: |
| 1991 | printk(KERN_WARNING "cciss%d: could not " |
| 1992 | "add disk 0.\n", h->ctlr); |
| 1993 | return; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1994 | } |
| 1995 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1996 | /* This function will add and remove logical drives from the Logical |
Bjorn Helgaas | d14c4ab | 2006-06-25 05:49:04 -0700 | [diff] [blame] | 1997 | * drive array of the controller and maintain persistency of ordering |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1998 | * so that mount points are preserved until the next reboot. This allows |
| 1999 | * for the removal of logical drives in the middle of the drive array |
| 2000 | * without a re-ordering of those drives. |
| 2001 | * INPUT |
| 2002 | * h = The controller to perform the operations on |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2003 | */ |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 2004 | static int rebuild_lun_table(ctlr_info_t *h, int first_time, |
| 2005 | int via_ioctl) |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2006 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2007 | int ctlr = h->ctlr; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2008 | int num_luns; |
| 2009 | ReportLunData_struct *ld_buff = NULL; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2010 | int return_code; |
| 2011 | int listlength = 0; |
| 2012 | int i; |
| 2013 | int drv_found; |
| 2014 | int drv_index = 0; |
| 2015 | __u32 lunid = 0; |
| 2016 | unsigned long flags; |
| 2017 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2018 | if (!capable(CAP_SYS_RAWIO)) |
| 2019 | return -EPERM; |
| 2020 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2021 | /* Set busy_configuring flag for this operation */ |
| 2022 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2023 | if (h->busy_configuring) { |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2024 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
| 2025 | return -EBUSY; |
| 2026 | } |
| 2027 | h->busy_configuring = 1; |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2028 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2029 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2030 | ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL); |
| 2031 | if (ld_buff == NULL) |
| 2032 | goto mem_msg; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2033 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2034 | 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] | 2035 | sizeof(ReportLunData_struct), |
| 2036 | 0, CTLR_LUNID, TYPE_CMD); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2037 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2038 | if (return_code == IO_OK) |
| 2039 | listlength = be32_to_cpu(*(__be32 *) ld_buff->LUNListLength); |
| 2040 | else { /* reading number of logical volumes failed */ |
| 2041 | printk(KERN_WARNING "cciss: report logical volume" |
| 2042 | " command failed\n"); |
| 2043 | listlength = 0; |
| 2044 | goto freeret; |
| 2045 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2046 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2047 | num_luns = listlength / 8; /* 8 bytes per entry */ |
| 2048 | if (num_luns > CISS_MAX_LUN) { |
| 2049 | num_luns = CISS_MAX_LUN; |
| 2050 | printk(KERN_WARNING "cciss: more luns configured" |
| 2051 | " on controller than can be handled by" |
| 2052 | " this driver.\n"); |
| 2053 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2054 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2055 | if (num_luns == 0) |
| 2056 | cciss_add_controller_node(h); |
| 2057 | |
| 2058 | /* Compare controller drive array to driver's drive array |
| 2059 | * to see if any drives are missing on the controller due |
| 2060 | * to action of Array Config Utility (user deletes drive) |
| 2061 | * and deregister logical drives which have disappeared. |
| 2062 | */ |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2063 | for (i = 0; i <= h->highest_lun; i++) { |
| 2064 | int j; |
| 2065 | drv_found = 0; |
Stephen M. Cameron | d8a0be6 | 2008-12-18 14:55:11 +0100 | [diff] [blame] | 2066 | |
| 2067 | /* skip holes in the array from already deleted drives */ |
| 2068 | if (h->drv[i].raid_level == -1) |
| 2069 | continue; |
| 2070 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2071 | for (j = 0; j < num_luns; j++) { |
| 2072 | memcpy(&lunid, &ld_buff->LUN[j][0], 4); |
| 2073 | lunid = le32_to_cpu(lunid); |
| 2074 | if (h->drv[i].LunID == lunid) { |
| 2075 | drv_found = 1; |
| 2076 | break; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2077 | } |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2078 | } |
| 2079 | if (!drv_found) { |
| 2080 | /* Deregister it from the OS, it's gone. */ |
| 2081 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
| 2082 | h->drv[i].busy_configuring = 1; |
| 2083 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 2084 | return_code = deregister_disk(h, i, 1, via_ioctl); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2085 | h->drv[i].busy_configuring = 0; |
| 2086 | } |
| 2087 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2088 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2089 | /* Compare controller drive array to driver's drive array. |
| 2090 | * Check for updates in the drive information and any new drives |
| 2091 | * on the controller due to ACU adding logical drives, or changing |
| 2092 | * a logical drive's size, etc. Reregister any new/changed drives |
| 2093 | */ |
| 2094 | for (i = 0; i < num_luns; i++) { |
| 2095 | int j; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2096 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2097 | drv_found = 0; |
| 2098 | |
| 2099 | memcpy(&lunid, &ld_buff->LUN[i][0], 4); |
| 2100 | lunid = le32_to_cpu(lunid); |
| 2101 | |
| 2102 | /* Find if the LUN is already in the drive array |
| 2103 | * of the driver. If so then update its info |
| 2104 | * if not in use. If it does not exist then find |
| 2105 | * the first free index and add it. |
| 2106 | */ |
| 2107 | for (j = 0; j <= h->highest_lun; j++) { |
| 2108 | if (h->drv[j].raid_level != -1 && |
| 2109 | h->drv[j].LunID == lunid) { |
| 2110 | drv_index = j; |
| 2111 | drv_found = 1; |
| 2112 | break; |
| 2113 | } |
| 2114 | } |
| 2115 | |
| 2116 | /* check if the drive was found already in the array */ |
| 2117 | if (!drv_found) { |
Mike Miller | eece695 | 2008-08-04 11:54:53 +0200 | [diff] [blame] | 2118 | drv_index = cciss_add_gendisk(h, lunid, 0); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2119 | if (drv_index == -1) |
| 2120 | goto freeret; |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2121 | } |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 2122 | cciss_update_drive_info(ctlr, drv_index, first_time, |
| 2123 | via_ioctl); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2124 | } /* end for */ |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2125 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2126 | freeret: |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2127 | kfree(ld_buff); |
| 2128 | h->busy_configuring = 0; |
| 2129 | /* We return -1 here to tell the ACU that we have registered/updated |
| 2130 | * all of the drives that we can and to keep it from calling us |
| 2131 | * additional times. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2132 | */ |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2133 | return -1; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2134 | mem_msg: |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2135 | printk(KERN_ERR "cciss: out of memory\n"); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2136 | h->busy_configuring = 0; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2137 | goto freeret; |
| 2138 | } |
| 2139 | |
Stephen M. Cameron | 9ddb27b | 2009-09-17 13:47:39 -0500 | [diff] [blame] | 2140 | static void cciss_clear_drive_info(drive_info_struct *drive_info) |
| 2141 | { |
| 2142 | /* zero out the disk size info */ |
| 2143 | drive_info->nr_blocks = 0; |
| 2144 | drive_info->block_size = 0; |
| 2145 | drive_info->heads = 0; |
| 2146 | drive_info->sectors = 0; |
| 2147 | drive_info->cylinders = 0; |
| 2148 | drive_info->raid_level = -1; |
| 2149 | memset(drive_info->serial_no, 0, sizeof(drive_info->serial_no)); |
| 2150 | memset(drive_info->model, 0, sizeof(drive_info->model)); |
| 2151 | memset(drive_info->rev, 0, sizeof(drive_info->rev)); |
| 2152 | memset(drive_info->vendor, 0, sizeof(drive_info->vendor)); |
| 2153 | /* |
| 2154 | * don't clear the LUNID though, we need to remember which |
| 2155 | * one this one is. |
| 2156 | */ |
| 2157 | } |
| 2158 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2159 | /* This function will deregister the disk and it's queue from the |
| 2160 | * kernel. It must be called with the controller lock held and the |
| 2161 | * drv structures busy_configuring flag set. It's parameters are: |
| 2162 | * |
| 2163 | * disk = This is the disk to be deregistered |
| 2164 | * drv = This is the drive_info_struct associated with the disk to be |
| 2165 | * deregistered. It contains information about the disk used |
| 2166 | * by the driver. |
| 2167 | * clear_all = This flag determines whether or not the disk information |
| 2168 | * is going to be completely cleared out and the highest_lun |
| 2169 | * reset. Sometimes we want to clear out information about |
Bjorn Helgaas | d14c4ab | 2006-06-25 05:49:04 -0700 | [diff] [blame] | 2170 | * the disk in preparation for re-adding it. In this case |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2171 | * the highest_lun should be left unchanged and the LunID |
| 2172 | * should not be cleared. |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 2173 | * via_ioctl |
| 2174 | * This indicates whether we've reached this path via ioctl. |
| 2175 | * This affects the maximum usage count allowed for c0d0 to be messed with. |
| 2176 | * If this path is reached via ioctl(), then the max_usage_count will |
| 2177 | * be 1, as the process calling ioctl() has got to have the device open. |
| 2178 | * 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] | 2179 | */ |
Stephen M. Cameron | a0ea862 | 2008-12-18 14:55:51 +0100 | [diff] [blame] | 2180 | static int deregister_disk(ctlr_info_t *h, int drv_index, |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 2181 | int clear_all, int via_ioctl) |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2182 | { |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 2183 | int i; |
Stephen M. Cameron | a0ea862 | 2008-12-18 14:55:51 +0100 | [diff] [blame] | 2184 | struct gendisk *disk; |
| 2185 | drive_info_struct *drv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2186 | |
| 2187 | if (!capable(CAP_SYS_RAWIO)) |
| 2188 | return -EPERM; |
| 2189 | |
Stephen M. Cameron | a0ea862 | 2008-12-18 14:55:51 +0100 | [diff] [blame] | 2190 | drv = &h->drv[drv_index]; |
| 2191 | disk = h->gendisk[drv_index]; |
| 2192 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2193 | /* make sure logical volume is NOT is use */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2194 | if (clear_all || (h->gendisk[0] == disk)) { |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 2195 | if (drv->usage_count > via_ioctl) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2196 | return -EBUSY; |
| 2197 | } else if (drv->usage_count > 0) |
| 2198 | return -EBUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2199 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2200 | /* invalidate the devices and deregister the disk. If it is disk |
| 2201 | * zero do not deregister it but just zero out it's values. This |
| 2202 | * allows us to delete disk zero but keep the controller registered. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2203 | */ |
| 2204 | if (h->gendisk[0] != disk) { |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2205 | struct request_queue *q = disk->queue; |
Stephen M. Cameron | 097d026 | 2009-09-17 13:47:19 -0500 | [diff] [blame] | 2206 | if (disk->flags & GENHD_FL_UP) { |
Stephen M. Cameron | 8ce5196 | 2009-09-17 13:47:34 -0500 | [diff] [blame] | 2207 | cciss_destroy_ld_sysfs_entry(h, drv_index, 0); |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2208 | del_gendisk(disk); |
Stephen M. Cameron | 097d026 | 2009-09-17 13:47:19 -0500 | [diff] [blame] | 2209 | } |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2210 | if (q) { |
| 2211 | blk_cleanup_queue(q); |
| 2212 | /* Set drv->queue to NULL so that we do not try |
| 2213 | * to call blk_start_queue on this queue in the |
| 2214 | * interrupt handler |
| 2215 | */ |
| 2216 | drv->queue = NULL; |
| 2217 | } |
| 2218 | /* If clear_all is set then we are deleting the logical |
| 2219 | * drive, not just refreshing its info. For drives |
| 2220 | * other than disk 0 we will call put_disk. We do not |
| 2221 | * do this for disk 0 as we need it to be able to |
| 2222 | * configure the controller. |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2223 | */ |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2224 | if (clear_all){ |
| 2225 | /* This isn't pretty, but we need to find the |
| 2226 | * disk in our array and NULL our the pointer. |
| 2227 | * This is so that we will call alloc_disk if |
| 2228 | * this index is used again later. |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2229 | */ |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2230 | for (i=0; i < CISS_MAX_LUN; i++){ |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2231 | if (h->gendisk[i] == disk) { |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2232 | h->gendisk[i] = NULL; |
| 2233 | break; |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 2234 | } |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 2235 | } |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2236 | put_disk(disk); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2237 | } |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 2238 | } else { |
| 2239 | set_capacity(disk, 0); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2240 | } |
| 2241 | |
| 2242 | --h->num_luns; |
Stephen M. Cameron | 9ddb27b | 2009-09-17 13:47:39 -0500 | [diff] [blame] | 2243 | cciss_clear_drive_info(drv); |
| 2244 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2245 | if (clear_all) { |
| 2246 | /* check to see if it was the last disk */ |
| 2247 | if (drv == h->drv + h->highest_lun) { |
| 2248 | /* if so, find the new hightest lun */ |
| 2249 | int i, newhighest = -1; |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2250 | for (i = 0; i <= h->highest_lun; i++) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2251 | /* if the disk has size > 0, it is available */ |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2252 | if (h->drv[i].heads) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2253 | newhighest = i; |
| 2254 | } |
| 2255 | h->highest_lun = newhighest; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2256 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2257 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2258 | drv->LunID = 0; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2259 | } |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 2260 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2261 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2262 | |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2263 | static int fill_cmd(CommandList_struct *c, __u8 cmd, int ctlr, void *buff, |
| 2264 | size_t size, __u8 page_code, unsigned char *scsi3addr, |
| 2265 | int cmd_type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2266 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2267 | ctlr_info_t *h = hba[ctlr]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2268 | u64bit buff_dma_handle; |
| 2269 | int status = IO_OK; |
| 2270 | |
| 2271 | c->cmd_type = CMD_IOCTL_PEND; |
| 2272 | c->Header.ReplyQueue = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2273 | if (buff != NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2274 | c->Header.SGList = 1; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2275 | c->Header.SGTotal = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2276 | } else { |
| 2277 | c->Header.SGList = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2278 | c->Header.SGTotal = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2279 | } |
| 2280 | c->Header.Tag.lower = c->busaddr; |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2281 | memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2282 | |
| 2283 | c->Request.Type.Type = cmd_type; |
| 2284 | if (cmd_type == TYPE_CMD) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2285 | switch (cmd) { |
| 2286 | case CISS_INQUIRY: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2287 | /* are we trying to read a vital product page */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2288 | if (page_code != 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2289 | c->Request.CDB[1] = 0x01; |
| 2290 | c->Request.CDB[2] = page_code; |
| 2291 | } |
| 2292 | c->Request.CDBLen = 6; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2293 | c->Request.Type.Attribute = ATTR_SIMPLE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2294 | c->Request.Type.Direction = XFER_READ; |
| 2295 | c->Request.Timeout = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2296 | c->Request.CDB[0] = CISS_INQUIRY; |
| 2297 | c->Request.CDB[4] = size & 0xFF; |
| 2298 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2299 | case CISS_REPORT_LOG: |
| 2300 | case CISS_REPORT_PHYS: |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2301 | /* Talking to controller so It's a physical command |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2302 | mode = 00 target = 0. Nothing to write. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2303 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2304 | c->Request.CDBLen = 12; |
| 2305 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2306 | c->Request.Type.Direction = XFER_READ; |
| 2307 | c->Request.Timeout = 0; |
| 2308 | c->Request.CDB[0] = cmd; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2309 | c->Request.CDB[6] = (size >> 24) & 0xFF; //MSB |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2310 | c->Request.CDB[7] = (size >> 16) & 0xFF; |
| 2311 | c->Request.CDB[8] = (size >> 8) & 0xFF; |
| 2312 | c->Request.CDB[9] = size & 0xFF; |
| 2313 | break; |
| 2314 | |
| 2315 | case CCISS_READ_CAPACITY: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2316 | c->Request.CDBLen = 10; |
| 2317 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2318 | c->Request.Type.Direction = XFER_READ; |
| 2319 | c->Request.Timeout = 0; |
| 2320 | c->Request.CDB[0] = cmd; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2321 | break; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2322 | case CCISS_READ_CAPACITY_16: |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2323 | c->Request.CDBLen = 16; |
| 2324 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2325 | c->Request.Type.Direction = XFER_READ; |
| 2326 | c->Request.Timeout = 0; |
| 2327 | c->Request.CDB[0] = cmd; |
| 2328 | c->Request.CDB[1] = 0x10; |
| 2329 | c->Request.CDB[10] = (size >> 24) & 0xFF; |
| 2330 | c->Request.CDB[11] = (size >> 16) & 0xFF; |
| 2331 | c->Request.CDB[12] = (size >> 8) & 0xFF; |
| 2332 | c->Request.CDB[13] = size & 0xFF; |
| 2333 | c->Request.Timeout = 0; |
| 2334 | c->Request.CDB[0] = cmd; |
| 2335 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2336 | case CCISS_CACHE_FLUSH: |
| 2337 | c->Request.CDBLen = 12; |
| 2338 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2339 | c->Request.Type.Direction = XFER_WRITE; |
| 2340 | c->Request.Timeout = 0; |
| 2341 | c->Request.CDB[0] = BMIC_WRITE; |
| 2342 | c->Request.CDB[6] = BMIC_CACHE_FLUSH; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2343 | break; |
Stephen M. Cameron | 88f627a | 2009-06-02 14:48:11 +0200 | [diff] [blame] | 2344 | case TEST_UNIT_READY: |
Stephen M. Cameron | 88f627a | 2009-06-02 14:48:11 +0200 | [diff] [blame] | 2345 | c->Request.CDBLen = 6; |
| 2346 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2347 | c->Request.Type.Direction = XFER_NONE; |
| 2348 | c->Request.Timeout = 0; |
| 2349 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2350 | default: |
| 2351 | printk(KERN_WARNING |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2352 | "cciss%d: Unknown Command 0x%c\n", ctlr, cmd); |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 2353 | return IO_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2354 | } |
| 2355 | } else if (cmd_type == TYPE_MSG) { |
| 2356 | switch (cmd) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2357 | case 0: /* ABORT message */ |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2358 | c->Request.CDBLen = 12; |
| 2359 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2360 | c->Request.Type.Direction = XFER_WRITE; |
| 2361 | c->Request.Timeout = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2362 | c->Request.CDB[0] = cmd; /* abort */ |
| 2363 | c->Request.CDB[1] = 0; /* abort a command */ |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2364 | /* buff contains the tag of the command to abort */ |
| 2365 | memcpy(&c->Request.CDB[4], buff, 8); |
| 2366 | break; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2367 | case 1: /* RESET message */ |
Stephen M. Cameron | 88f627a | 2009-06-02 14:48:11 +0200 | [diff] [blame] | 2368 | c->Request.CDBLen = 16; |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2369 | c->Request.Type.Attribute = ATTR_SIMPLE; |
Stephen M. Cameron | 88f627a | 2009-06-02 14:48:11 +0200 | [diff] [blame] | 2370 | c->Request.Type.Direction = XFER_NONE; |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2371 | c->Request.Timeout = 0; |
| 2372 | memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB)); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2373 | c->Request.CDB[0] = cmd; /* reset */ |
Stephen M. Cameron | 88f627a | 2009-06-02 14:48:11 +0200 | [diff] [blame] | 2374 | c->Request.CDB[1] = 0x03; /* reset a target */ |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2375 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2376 | case 3: /* No-Op message */ |
| 2377 | c->Request.CDBLen = 1; |
| 2378 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2379 | c->Request.Type.Direction = XFER_WRITE; |
| 2380 | c->Request.Timeout = 0; |
| 2381 | c->Request.CDB[0] = cmd; |
| 2382 | break; |
| 2383 | default: |
| 2384 | printk(KERN_WARNING |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2385 | "cciss%d: unknown message type %d\n", ctlr, cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2386 | return IO_ERROR; |
| 2387 | } |
| 2388 | } else { |
| 2389 | printk(KERN_WARNING |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2390 | "cciss%d: unknown command type %d\n", ctlr, cmd_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2391 | return IO_ERROR; |
| 2392 | } |
| 2393 | /* Fill in the scatter gather information */ |
| 2394 | if (size > 0) { |
| 2395 | buff_dma_handle.val = (__u64) pci_map_single(h->pdev, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2396 | buff, size, |
| 2397 | PCI_DMA_BIDIRECTIONAL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2398 | c->SG[0].Addr.lower = buff_dma_handle.val32.lower; |
| 2399 | c->SG[0].Addr.upper = buff_dma_handle.val32.upper; |
| 2400 | c->SG[0].Len = size; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2401 | c->SG[0].Ext = 0; /* we are not chaining */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2402 | } |
| 2403 | return status; |
| 2404 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2405 | |
scameron@beardog.cca.cpqcorp.net | 3c2ab40 | 2009-06-08 16:04:35 -0500 | [diff] [blame] | 2406 | static int check_target_status(ctlr_info_t *h, CommandList_struct *c) |
| 2407 | { |
| 2408 | switch (c->err_info->ScsiStatus) { |
| 2409 | case SAM_STAT_GOOD: |
| 2410 | return IO_OK; |
| 2411 | case SAM_STAT_CHECK_CONDITION: |
| 2412 | switch (0xf & c->err_info->SenseInfo[2]) { |
| 2413 | case 0: return IO_OK; /* no sense */ |
| 2414 | case 1: return IO_OK; /* recovered error */ |
| 2415 | default: |
| 2416 | printk(KERN_WARNING "cciss%d: cmd 0x%02x " |
| 2417 | "check condition, sense key = 0x%02x\n", |
| 2418 | h->ctlr, c->Request.CDB[0], |
| 2419 | c->err_info->SenseInfo[2]); |
| 2420 | } |
| 2421 | break; |
| 2422 | default: |
| 2423 | printk(KERN_WARNING "cciss%d: cmd 0x%02x" |
| 2424 | "scsi status = 0x%02x\n", h->ctlr, |
| 2425 | c->Request.CDB[0], c->err_info->ScsiStatus); |
| 2426 | break; |
| 2427 | } |
| 2428 | return IO_ERROR; |
| 2429 | } |
| 2430 | |
scameron@beardog.cca.cpqcorp.net | 789a424 | 2009-06-08 16:05:56 -0500 | [diff] [blame] | 2431 | 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] | 2432 | { |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2433 | int return_status = IO_OK; |
| 2434 | |
scameron@beardog.cca.cpqcorp.net | 789a424 | 2009-06-08 16:05:56 -0500 | [diff] [blame] | 2435 | if (c->err_info->CommandStatus == CMD_SUCCESS) |
| 2436 | return IO_OK; |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2437 | |
| 2438 | switch (c->err_info->CommandStatus) { |
| 2439 | case CMD_TARGET_STATUS: |
scameron@beardog.cca.cpqcorp.net | 3c2ab40 | 2009-06-08 16:04:35 -0500 | [diff] [blame] | 2440 | return_status = check_target_status(h, c); |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2441 | break; |
| 2442 | case CMD_DATA_UNDERRUN: |
| 2443 | case CMD_DATA_OVERRUN: |
| 2444 | /* expected for inquiry and report lun commands */ |
| 2445 | break; |
| 2446 | case CMD_INVALID: |
scameron@beardog.cca.cpqcorp.net | 789a424 | 2009-06-08 16:05:56 -0500 | [diff] [blame] | 2447 | printk(KERN_WARNING "cciss: cmd 0x%02x is " |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2448 | "reported invalid\n", c->Request.CDB[0]); |
| 2449 | return_status = IO_ERROR; |
| 2450 | break; |
| 2451 | case CMD_PROTOCOL_ERR: |
| 2452 | printk(KERN_WARNING "cciss: cmd 0x%02x has " |
| 2453 | "protocol error \n", c->Request.CDB[0]); |
| 2454 | return_status = IO_ERROR; |
| 2455 | break; |
| 2456 | case CMD_HARDWARE_ERR: |
| 2457 | printk(KERN_WARNING "cciss: cmd 0x%02x had " |
| 2458 | " hardware error\n", c->Request.CDB[0]); |
| 2459 | return_status = IO_ERROR; |
| 2460 | break; |
| 2461 | case CMD_CONNECTION_LOST: |
| 2462 | printk(KERN_WARNING "cciss: cmd 0x%02x had " |
| 2463 | "connection lost\n", c->Request.CDB[0]); |
| 2464 | return_status = IO_ERROR; |
| 2465 | break; |
| 2466 | case CMD_ABORTED: |
| 2467 | printk(KERN_WARNING "cciss: cmd 0x%02x was " |
| 2468 | "aborted\n", c->Request.CDB[0]); |
| 2469 | return_status = IO_ERROR; |
| 2470 | break; |
| 2471 | case CMD_ABORT_FAILED: |
| 2472 | printk(KERN_WARNING "cciss: cmd 0x%02x reports " |
| 2473 | "abort failed\n", c->Request.CDB[0]); |
| 2474 | return_status = IO_ERROR; |
| 2475 | break; |
| 2476 | case CMD_UNSOLICITED_ABORT: |
| 2477 | printk(KERN_WARNING |
| 2478 | "cciss%d: unsolicited abort 0x%02x\n", h->ctlr, |
| 2479 | c->Request.CDB[0]); |
scameron@beardog.cca.cpqcorp.net | 789a424 | 2009-06-08 16:05:56 -0500 | [diff] [blame] | 2480 | return_status = IO_NEEDS_RETRY; |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2481 | break; |
| 2482 | default: |
| 2483 | printk(KERN_WARNING "cciss: cmd 0x%02x returned " |
| 2484 | "unknown status %x\n", c->Request.CDB[0], |
| 2485 | c->err_info->CommandStatus); |
| 2486 | return_status = IO_ERROR; |
| 2487 | } |
scameron@beardog.cca.cpqcorp.net | 789a424 | 2009-06-08 16:05:56 -0500 | [diff] [blame] | 2488 | return return_status; |
| 2489 | } |
| 2490 | |
| 2491 | static int sendcmd_withirq_core(ctlr_info_t *h, CommandList_struct *c, |
| 2492 | int attempt_retry) |
| 2493 | { |
| 2494 | DECLARE_COMPLETION_ONSTACK(wait); |
| 2495 | u64bit buff_dma_handle; |
| 2496 | unsigned long flags; |
| 2497 | int return_status = IO_OK; |
| 2498 | |
| 2499 | resend_cmd2: |
| 2500 | c->waiting = &wait; |
| 2501 | /* Put the request on the tail of the queue and send it */ |
| 2502 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
| 2503 | addQ(&h->reqQ, c); |
| 2504 | h->Qdepth++; |
| 2505 | start_io(h); |
| 2506 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
| 2507 | |
| 2508 | wait_for_completion(&wait); |
| 2509 | |
| 2510 | if (c->err_info->CommandStatus == 0 || !attempt_retry) |
| 2511 | goto command_done; |
| 2512 | |
| 2513 | return_status = process_sendcmd_error(h, c); |
| 2514 | |
| 2515 | if (return_status == IO_NEEDS_RETRY && |
| 2516 | c->retry_count < MAX_CMD_RETRIES) { |
| 2517 | printk(KERN_WARNING "cciss%d: retrying 0x%02x\n", h->ctlr, |
| 2518 | c->Request.CDB[0]); |
| 2519 | c->retry_count++; |
| 2520 | /* erase the old error information */ |
| 2521 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); |
| 2522 | return_status = IO_OK; |
| 2523 | INIT_COMPLETION(wait); |
| 2524 | goto resend_cmd2; |
| 2525 | } |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2526 | |
| 2527 | command_done: |
| 2528 | /* unlock the buffers from DMA */ |
| 2529 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
| 2530 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; |
| 2531 | pci_unmap_single(h->pdev, (dma_addr_t) buff_dma_handle.val, |
| 2532 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); |
| 2533 | return return_status; |
| 2534 | } |
| 2535 | |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2536 | static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size, |
| 2537 | __u8 page_code, unsigned char scsi3addr[], |
| 2538 | int cmd_type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2539 | { |
| 2540 | ctlr_info_t *h = hba[ctlr]; |
| 2541 | CommandList_struct *c; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2542 | int return_status; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2543 | |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2544 | c = cmd_alloc(h, 0); |
| 2545 | if (!c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2546 | return -ENOMEM; |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2547 | return_status = fill_cmd(c, cmd, ctlr, buff, size, page_code, |
| 2548 | scsi3addr, cmd_type); |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2549 | if (return_status == IO_OK) |
scameron@beardog.cca.cpqcorp.net | 789a424 | 2009-06-08 16:05:56 -0500 | [diff] [blame] | 2550 | return_status = sendcmd_withirq_core(h, c, 1); |
| 2551 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2552 | cmd_free(h, c, 0); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2553 | return return_status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2554 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2555 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2556 | static void cciss_geometry_inquiry(int ctlr, int logvol, |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2557 | int withirq, sector_t total_size, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2558 | unsigned int block_size, |
| 2559 | InquiryData_struct *inq_buff, |
| 2560 | drive_info_struct *drv) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2561 | { |
| 2562 | int return_code; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2563 | unsigned long t; |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2564 | unsigned char scsi3addr[8]; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2565 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2566 | memset(inq_buff, 0, sizeof(InquiryData_struct)); |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2567 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2568 | if (withirq) |
| 2569 | return_code = sendcmd_withirq(CISS_INQUIRY, ctlr, |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2570 | inq_buff, sizeof(*inq_buff), |
| 2571 | 0xC1, scsi3addr, TYPE_CMD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2572 | else |
| 2573 | return_code = sendcmd(CISS_INQUIRY, ctlr, inq_buff, |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2574 | sizeof(*inq_buff), 0xC1, scsi3addr, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2575 | TYPE_CMD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2576 | if (return_code == IO_OK) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2577 | if (inq_buff->data_byte[8] == 0xFF) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2578 | printk(KERN_WARNING |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2579 | "cciss: reading geometry failed, volume " |
| 2580 | "does not support reading geometry\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2581 | drv->heads = 255; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2582 | drv->sectors = 32; // Sectors per track |
Mike Miller (OS Dev) | 7f42d3b | 2007-04-04 19:08:23 -0700 | [diff] [blame] | 2583 | drv->cylinders = total_size + 1; |
Mike Miller | 89f97ad | 2006-12-18 10:59:39 +0100 | [diff] [blame] | 2584 | drv->raid_level = RAID_UNKNOWN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2585 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2586 | drv->heads = inq_buff->data_byte[6]; |
| 2587 | drv->sectors = inq_buff->data_byte[7]; |
| 2588 | drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8; |
| 2589 | drv->cylinders += inq_buff->data_byte[5]; |
| 2590 | drv->raid_level = inq_buff->data_byte[8]; |
Matthew Wilcox | 3f7705e | 2006-10-21 10:24:19 -0700 | [diff] [blame] | 2591 | } |
| 2592 | drv->block_size = block_size; |
Mike Miller (OS Dev) | 97c0697 | 2007-03-06 01:42:14 -0800 | [diff] [blame] | 2593 | drv->nr_blocks = total_size + 1; |
Matthew Wilcox | 3f7705e | 2006-10-21 10:24:19 -0700 | [diff] [blame] | 2594 | t = drv->heads * drv->sectors; |
| 2595 | if (t > 1) { |
Mike Miller (OS Dev) | 97c0697 | 2007-03-06 01:42:14 -0800 | [diff] [blame] | 2596 | sector_t real_size = total_size + 1; |
| 2597 | unsigned long rem = sector_div(real_size, t); |
Matthew Wilcox | 3f7705e | 2006-10-21 10:24:19 -0700 | [diff] [blame] | 2598 | if (rem) |
Mike Miller (OS Dev) | 97c0697 | 2007-03-06 01:42:14 -0800 | [diff] [blame] | 2599 | real_size++; |
| 2600 | drv->cylinders = real_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2601 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2602 | } else { /* Get geometry failed */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2603 | printk(KERN_WARNING "cciss: reading geometry failed\n"); |
| 2604 | } |
Metathronius Galabant | cc088d1 | 2006-09-30 23:27:47 -0700 | [diff] [blame] | 2605 | printk(KERN_INFO " heads=%d, sectors=%d, cylinders=%d\n\n", |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2606 | drv->heads, drv->sectors, drv->cylinders); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2607 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2608 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2609 | static void |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2610 | cciss_read_capacity(int ctlr, int logvol, int withirq, sector_t *total_size, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2611 | unsigned int *block_size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2612 | { |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2613 | ReadCapdata_struct *buf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2614 | int return_code; |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2615 | unsigned char scsi3addr[8]; |
Mariusz Kozlowski | 1aebe18 | 2007-08-11 22:34:29 +0200 | [diff] [blame] | 2616 | |
| 2617 | buf = kzalloc(sizeof(ReadCapdata_struct), GFP_KERNEL); |
| 2618 | if (!buf) { |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2619 | printk(KERN_WARNING "cciss: out of memory\n"); |
| 2620 | return; |
| 2621 | } |
Mariusz Kozlowski | 1aebe18 | 2007-08-11 22:34:29 +0200 | [diff] [blame] | 2622 | |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2623 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2624 | if (withirq) |
| 2625 | return_code = sendcmd_withirq(CCISS_READ_CAPACITY, |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2626 | ctlr, buf, sizeof(ReadCapdata_struct), |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2627 | 0, scsi3addr, TYPE_CMD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2628 | else |
| 2629 | return_code = sendcmd(CCISS_READ_CAPACITY, |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2630 | ctlr, buf, sizeof(ReadCapdata_struct), |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2631 | 0, scsi3addr, TYPE_CMD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2632 | if (return_code == IO_OK) { |
Al Viro | 4c1f2b3 | 2007-03-14 09:19:10 +0000 | [diff] [blame] | 2633 | *total_size = be32_to_cpu(*(__be32 *) buf->total_size); |
| 2634 | *block_size = be32_to_cpu(*(__be32 *) buf->block_size); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2635 | } else { /* read capacity command failed */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2636 | printk(KERN_WARNING "cciss: read capacity failed\n"); |
| 2637 | *total_size = 0; |
| 2638 | *block_size = BLOCK_SIZE; |
| 2639 | } |
Mike Miller (OS Dev) | 97c0697 | 2007-03-06 01:42:14 -0800 | [diff] [blame] | 2640 | if (*total_size != 0) |
Randy Dunlap | 7b92aad | 2006-10-28 10:38:40 -0700 | [diff] [blame] | 2641 | printk(KERN_INFO " blocks= %llu block_size= %d\n", |
Mike Miller (OS Dev) | 97c0697 | 2007-03-06 01:42:14 -0800 | [diff] [blame] | 2642 | (unsigned long long)*total_size+1, *block_size); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2643 | kfree(buf); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2644 | } |
| 2645 | |
| 2646 | static void |
| 2647 | cciss_read_capacity_16(int ctlr, int logvol, int withirq, sector_t *total_size, unsigned int *block_size) |
| 2648 | { |
| 2649 | ReadCapdata_struct_16 *buf; |
| 2650 | int return_code; |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2651 | unsigned char scsi3addr[8]; |
Mariusz Kozlowski | 1aebe18 | 2007-08-11 22:34:29 +0200 | [diff] [blame] | 2652 | |
| 2653 | buf = kzalloc(sizeof(ReadCapdata_struct_16), GFP_KERNEL); |
| 2654 | if (!buf) { |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2655 | printk(KERN_WARNING "cciss: out of memory\n"); |
| 2656 | return; |
| 2657 | } |
Mariusz Kozlowski | 1aebe18 | 2007-08-11 22:34:29 +0200 | [diff] [blame] | 2658 | |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2659 | log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2660 | if (withirq) { |
| 2661 | return_code = sendcmd_withirq(CCISS_READ_CAPACITY_16, |
| 2662 | ctlr, buf, sizeof(ReadCapdata_struct_16), |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2663 | 0, scsi3addr, TYPE_CMD); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2664 | } |
| 2665 | else { |
| 2666 | return_code = sendcmd(CCISS_READ_CAPACITY_16, |
| 2667 | ctlr, buf, sizeof(ReadCapdata_struct_16), |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2668 | 0, scsi3addr, TYPE_CMD); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2669 | } |
| 2670 | if (return_code == IO_OK) { |
Al Viro | 4c1f2b3 | 2007-03-14 09:19:10 +0000 | [diff] [blame] | 2671 | *total_size = be64_to_cpu(*(__be64 *) buf->total_size); |
| 2672 | *block_size = be32_to_cpu(*(__be32 *) buf->block_size); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2673 | } else { /* read capacity command failed */ |
| 2674 | printk(KERN_WARNING "cciss: read capacity failed\n"); |
| 2675 | *total_size = 0; |
| 2676 | *block_size = BLOCK_SIZE; |
| 2677 | } |
Randy Dunlap | 7b92aad | 2006-10-28 10:38:40 -0700 | [diff] [blame] | 2678 | printk(KERN_INFO " blocks= %llu block_size= %d\n", |
Mike Miller (OS Dev) | 97c0697 | 2007-03-06 01:42:14 -0800 | [diff] [blame] | 2679 | (unsigned long long)*total_size+1, *block_size); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2680 | kfree(buf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2681 | } |
| 2682 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2683 | static int cciss_revalidate(struct gendisk *disk) |
| 2684 | { |
| 2685 | ctlr_info_t *h = get_host(disk); |
| 2686 | drive_info_struct *drv = get_drv(disk); |
| 2687 | int logvol; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2688 | int FOUND = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2689 | unsigned int block_size; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2690 | sector_t total_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2691 | InquiryData_struct *inq_buff = NULL; |
| 2692 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2693 | for (logvol = 0; logvol < CISS_MAX_LUN; logvol++) { |
| 2694 | if (h->drv[logvol].LunID == drv->LunID) { |
| 2695 | FOUND = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2696 | break; |
| 2697 | } |
| 2698 | } |
| 2699 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2700 | if (!FOUND) |
| 2701 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2702 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2703 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
| 2704 | if (inq_buff == NULL) { |
| 2705 | printk(KERN_WARNING "cciss: out of memory\n"); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2706 | return 1; |
| 2707 | } |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2708 | if (h->cciss_read == CCISS_READ_10) { |
| 2709 | cciss_read_capacity(h->ctlr, logvol, 1, |
| 2710 | &total_size, &block_size); |
| 2711 | } else { |
| 2712 | cciss_read_capacity_16(h->ctlr, logvol, 1, |
| 2713 | &total_size, &block_size); |
| 2714 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2715 | cciss_geometry_inquiry(h->ctlr, logvol, 1, total_size, block_size, |
| 2716 | inq_buff, drv); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2717 | |
Martin K. Petersen | e1defc4 | 2009-05-22 17:17:49 -0400 | [diff] [blame] | 2718 | blk_queue_logical_block_size(drv->queue, drv->block_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2719 | set_capacity(disk, drv->nr_blocks); |
| 2720 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2721 | kfree(inq_buff); |
| 2722 | return 0; |
| 2723 | } |
| 2724 | |
| 2725 | /* |
| 2726 | * Wait polling for a command to complete. |
| 2727 | * The memory mapped FIFO is polled for the completion. |
| 2728 | * Used only at init time, interrupts from the HBA are disabled. |
| 2729 | */ |
| 2730 | static unsigned long pollcomplete(int ctlr) |
| 2731 | { |
| 2732 | unsigned long done; |
| 2733 | int i; |
| 2734 | |
| 2735 | /* Wait (up to 20 seconds) for a command to complete */ |
| 2736 | |
| 2737 | for (i = 20 * HZ; i > 0; i--) { |
| 2738 | done = hba[ctlr]->access.command_completed(hba[ctlr]); |
Nishanth Aravamudan | 86e8486 | 2005-09-10 00:27:28 -0700 | [diff] [blame] | 2739 | if (done == FIFO_EMPTY) |
| 2740 | schedule_timeout_uninterruptible(1); |
| 2741 | else |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 2742 | return done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2743 | } |
| 2744 | /* Invalid address to tell caller we ran out of time */ |
| 2745 | return 1; |
| 2746 | } |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2747 | |
Stephen M. Cameron | 4a4b2d7 | 2009-06-02 14:47:50 +0200 | [diff] [blame] | 2748 | /* Send command c to controller h and poll for it to complete. |
| 2749 | * Turns interrupts off on the board. Used at driver init time |
| 2750 | * and during SCSI error recovery. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2751 | */ |
Stephen M. Cameron | 4a4b2d7 | 2009-06-02 14:47:50 +0200 | [diff] [blame] | 2752 | static int sendcmd_core(ctlr_info_t *h, CommandList_struct *c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2753 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2754 | int i; |
| 2755 | unsigned long complete; |
Stephen M. Cameron | 4a4b2d7 | 2009-06-02 14:47:50 +0200 | [diff] [blame] | 2756 | int status = IO_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2757 | u64bit buff_dma_handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2758 | |
Stephen M. Cameron | 4a4b2d7 | 2009-06-02 14:47:50 +0200 | [diff] [blame] | 2759 | resend_cmd1: |
| 2760 | |
| 2761 | /* Disable interrupt on the board. */ |
| 2762 | h->access.set_intr_mask(h, CCISS_INTR_OFF); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2763 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2764 | /* Make sure there is room in the command FIFO */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2765 | /* Actually it should be completely empty at this time */ |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2766 | /* unless we are in here doing error handling for the scsi */ |
| 2767 | /* tape side of the driver. */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2768 | for (i = 200000; i > 0; i--) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2769 | /* if fifo isn't full go */ |
Stephen M. Cameron | 4a4b2d7 | 2009-06-02 14:47:50 +0200 | [diff] [blame] | 2770 | if (!(h->access.fifo_full(h))) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2771 | break; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2772 | udelay(10); |
| 2773 | printk(KERN_WARNING "cciss cciss%d: SendCmd FIFO full," |
Stephen M. Cameron | 4a4b2d7 | 2009-06-02 14:47:50 +0200 | [diff] [blame] | 2774 | " waiting!\n", h->ctlr); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2775 | } |
Stephen M. Cameron | 4a4b2d7 | 2009-06-02 14:47:50 +0200 | [diff] [blame] | 2776 | h->access.submit_command(h, c); /* Send the cmd */ |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2777 | do { |
Stephen M. Cameron | 4a4b2d7 | 2009-06-02 14:47:50 +0200 | [diff] [blame] | 2778 | complete = pollcomplete(h->ctlr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2779 | |
| 2780 | #ifdef CCISS_DEBUG |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2781 | printk(KERN_DEBUG "cciss: command completed\n"); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2782 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2783 | |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2784 | if (complete == 1) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2785 | printk(KERN_WARNING |
| 2786 | "cciss cciss%d: SendCmd Timeout out, " |
Stephen M. Cameron | 4a4b2d7 | 2009-06-02 14:47:50 +0200 | [diff] [blame] | 2787 | "No command list address returned!\n", h->ctlr); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2788 | status = IO_ERROR; |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2789 | break; |
| 2790 | } |
| 2791 | |
scameron@beardog.cca.cpqcorp.net | 72f9f13 | 2009-06-08 16:09:32 -0500 | [diff] [blame] | 2792 | /* Make sure it's the command we're expecting. */ |
Stephen M. Cameron | 4a4b2d7 | 2009-06-02 14:47:50 +0200 | [diff] [blame] | 2793 | if ((complete & ~CISS_ERROR_BIT) != c->busaddr) { |
scameron@beardog.cca.cpqcorp.net | 72f9f13 | 2009-06-08 16:09:32 -0500 | [diff] [blame] | 2794 | printk(KERN_WARNING "cciss%d: Unexpected command " |
| 2795 | "completion.\n", h->ctlr); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2796 | continue; |
Stephen M. Cameron | 4a4b2d7 | 2009-06-02 14:47:50 +0200 | [diff] [blame] | 2797 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2798 | |
Stephen M. Cameron | 4a4b2d7 | 2009-06-02 14:47:50 +0200 | [diff] [blame] | 2799 | /* It is our command. If no error, we're done. */ |
| 2800 | if (!(complete & CISS_ERROR_BIT)) { |
| 2801 | status = IO_OK; |
| 2802 | break; |
| 2803 | } |
| 2804 | |
| 2805 | /* There is an error... */ |
| 2806 | |
| 2807 | /* if data overrun or underun on Report command ignore it */ |
| 2808 | if (((c->Request.CDB[0] == CISS_REPORT_LOG) || |
| 2809 | (c->Request.CDB[0] == CISS_REPORT_PHYS) || |
| 2810 | (c->Request.CDB[0] == CISS_INQUIRY)) && |
| 2811 | ((c->err_info->CommandStatus == CMD_DATA_OVERRUN) || |
| 2812 | (c->err_info->CommandStatus == CMD_DATA_UNDERRUN))) { |
| 2813 | complete = c->busaddr; |
| 2814 | status = IO_OK; |
| 2815 | break; |
| 2816 | } |
| 2817 | |
| 2818 | if (c->err_info->CommandStatus == CMD_UNSOLICITED_ABORT) { |
| 2819 | printk(KERN_WARNING "cciss%d: unsolicited abort %p\n", |
| 2820 | h->ctlr, c); |
| 2821 | if (c->retry_count < MAX_CMD_RETRIES) { |
| 2822 | printk(KERN_WARNING "cciss%d: retrying %p\n", |
| 2823 | h->ctlr, c); |
| 2824 | c->retry_count++; |
| 2825 | /* erase the old error information */ |
| 2826 | memset(c->err_info, 0, sizeof(c->err_info)); |
| 2827 | goto resend_cmd1; |
| 2828 | } |
| 2829 | printk(KERN_WARNING "cciss%d: retried %p too many " |
| 2830 | "times\n", h->ctlr, c); |
| 2831 | status = IO_ERROR; |
scameron@beardog.cca.cpqcorp.net | 3c2ab40 | 2009-06-08 16:04:35 -0500 | [diff] [blame] | 2832 | break; |
Stephen M. Cameron | 4a4b2d7 | 2009-06-02 14:47:50 +0200 | [diff] [blame] | 2833 | } |
| 2834 | |
| 2835 | if (c->err_info->CommandStatus == CMD_UNABORTABLE) { |
| 2836 | printk(KERN_WARNING "cciss%d: command could not be " |
| 2837 | "aborted.\n", h->ctlr); |
| 2838 | status = IO_ERROR; |
scameron@beardog.cca.cpqcorp.net | 3c2ab40 | 2009-06-08 16:04:35 -0500 | [diff] [blame] | 2839 | break; |
| 2840 | } |
| 2841 | |
| 2842 | if (c->err_info->CommandStatus == CMD_TARGET_STATUS) { |
| 2843 | status = check_target_status(h, c); |
| 2844 | break; |
Stephen M. Cameron | 4a4b2d7 | 2009-06-02 14:47:50 +0200 | [diff] [blame] | 2845 | } |
| 2846 | |
| 2847 | printk(KERN_WARNING "cciss%d: sendcmd error\n", h->ctlr); |
| 2848 | printk(KERN_WARNING "cmd = 0x%02x, CommandStatus = 0x%02x\n", |
| 2849 | c->Request.CDB[0], c->err_info->CommandStatus); |
Stephen M. Cameron | 4a4b2d7 | 2009-06-02 14:47:50 +0200 | [diff] [blame] | 2850 | status = IO_ERROR; |
scameron@beardog.cca.cpqcorp.net | 3c2ab40 | 2009-06-08 16:04:35 -0500 | [diff] [blame] | 2851 | break; |
Stephen M. Cameron | 4a4b2d7 | 2009-06-02 14:47:50 +0200 | [diff] [blame] | 2852 | |
| 2853 | } while (1); |
| 2854 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2855 | /* unlock the data buffer from DMA */ |
Mike Miller | bb2a37b | 2005-09-13 01:25:24 -0700 | [diff] [blame] | 2856 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
| 2857 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; |
Stephen M. Cameron | 4a4b2d7 | 2009-06-02 14:47:50 +0200 | [diff] [blame] | 2858 | pci_unmap_single(h->pdev, (dma_addr_t) buff_dma_handle.val, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2859 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); |
Stephen M. Cameron | 4a4b2d7 | 2009-06-02 14:47:50 +0200 | [diff] [blame] | 2860 | return status; |
| 2861 | } |
| 2862 | |
| 2863 | /* |
| 2864 | * Send a command to the controller, and wait for it to complete. |
| 2865 | * Used at init time, and during SCSI error recovery. |
| 2866 | */ |
| 2867 | static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size, |
Stephen M. Cameron | 4a4b2d7 | 2009-06-02 14:47:50 +0200 | [diff] [blame] | 2868 | __u8 page_code, unsigned char *scsi3addr, int cmd_type) |
| 2869 | { |
| 2870 | CommandList_struct *c; |
| 2871 | int status; |
| 2872 | |
| 2873 | c = cmd_alloc(hba[ctlr], 1); |
| 2874 | if (!c) { |
| 2875 | printk(KERN_WARNING "cciss: unable to get memory"); |
| 2876 | return IO_ERROR; |
| 2877 | } |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2878 | status = fill_cmd(c, cmd, ctlr, buff, size, page_code, |
| 2879 | scsi3addr, cmd_type); |
Stephen M. Cameron | 4a4b2d7 | 2009-06-02 14:47:50 +0200 | [diff] [blame] | 2880 | if (status == IO_OK) |
| 2881 | status = sendcmd_core(hba[ctlr], c); |
| 2882 | cmd_free(hba[ctlr], c, 1); |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 2883 | return status; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2884 | } |
| 2885 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2886 | /* |
| 2887 | * Map (physical) PCI mem into (virtual) kernel space |
| 2888 | */ |
| 2889 | static void __iomem *remap_pci_mem(ulong base, ulong size) |
| 2890 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2891 | ulong page_base = ((ulong) base) & PAGE_MASK; |
| 2892 | ulong page_offs = ((ulong) base) - page_base; |
| 2893 | void __iomem *page_remapped = ioremap(page_base, page_offs + size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2894 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2895 | return page_remapped ? (page_remapped + page_offs) : NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2896 | } |
| 2897 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2898 | /* |
| 2899 | * Takes jobs of the Q and sends them to the hardware, then puts it on |
| 2900 | * the Q to wait for completion. |
| 2901 | */ |
| 2902 | static void start_io(ctlr_info_t *h) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2903 | { |
| 2904 | CommandList_struct *c; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2905 | |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 2906 | while (!hlist_empty(&h->reqQ)) { |
| 2907 | c = hlist_entry(h->reqQ.first, CommandList_struct, list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2908 | /* can't do anything if fifo is full */ |
| 2909 | if ((h->access.fifo_full(h))) { |
| 2910 | printk(KERN_WARNING "cciss: fifo full\n"); |
| 2911 | break; |
| 2912 | } |
| 2913 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2914 | /* Get the first entry from the Request Q */ |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 2915 | removeQ(c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2916 | h->Qdepth--; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2917 | |
| 2918 | /* Tell the controller execute command */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2919 | h->access.submit_command(h, c); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2920 | |
| 2921 | /* Put job onto the completed Q */ |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 2922 | addQ(&h->cmpQ, c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2923 | } |
| 2924 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2925 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2926 | /* Assumes that CCISS_LOCK(h->ctlr) is held. */ |
| 2927 | /* Zeros out the error record and then resends the command back */ |
| 2928 | /* to the controller */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2929 | 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] | 2930 | { |
| 2931 | /* erase the old error information */ |
| 2932 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); |
| 2933 | |
| 2934 | /* add it to software queue and then send it to the controller */ |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 2935 | addQ(&h->reqQ, c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2936 | h->Qdepth++; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2937 | if (h->Qdepth > h->maxQsinceinit) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2938 | h->maxQsinceinit = h->Qdepth; |
| 2939 | |
| 2940 | start_io(h); |
| 2941 | } |
Jens Axboe | a9925a0 | 2006-01-09 16:04:06 +0100 | [diff] [blame] | 2942 | |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2943 | static inline unsigned int make_status_bytes(unsigned int scsi_status_byte, |
| 2944 | unsigned int msg_byte, unsigned int host_byte, |
| 2945 | unsigned int driver_byte) |
| 2946 | { |
| 2947 | /* inverse of macros in scsi.h */ |
| 2948 | return (scsi_status_byte & 0xff) | |
| 2949 | ((msg_byte & 0xff) << 8) | |
| 2950 | ((host_byte & 0xff) << 16) | |
| 2951 | ((driver_byte & 0xff) << 24); |
| 2952 | } |
| 2953 | |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 2954 | static inline int evaluate_target_status(ctlr_info_t *h, |
| 2955 | CommandList_struct *cmd, int *retry_cmd) |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 2956 | { |
| 2957 | unsigned char sense_key; |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2958 | unsigned char status_byte, msg_byte, host_byte, driver_byte; |
| 2959 | int error_value; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 2960 | |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 2961 | *retry_cmd = 0; |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2962 | /* If we get in here, it means we got "target status", that is, scsi status */ |
| 2963 | status_byte = cmd->err_info->ScsiStatus; |
| 2964 | driver_byte = DRIVER_OK; |
| 2965 | msg_byte = cmd->err_info->CommandStatus; /* correct? seems too device specific */ |
| 2966 | |
| 2967 | if (blk_pc_request(cmd->rq)) |
| 2968 | host_byte = DID_PASSTHROUGH; |
| 2969 | else |
| 2970 | host_byte = DID_OK; |
| 2971 | |
| 2972 | error_value = make_status_bytes(status_byte, msg_byte, |
| 2973 | host_byte, driver_byte); |
| 2974 | |
| 2975 | if (cmd->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) { |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 2976 | if (!blk_pc_request(cmd->rq)) |
| 2977 | printk(KERN_WARNING "cciss: cmd %p " |
| 2978 | "has SCSI Status 0x%x\n", |
| 2979 | cmd, cmd->err_info->ScsiStatus); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2980 | return error_value; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 2981 | } |
| 2982 | |
| 2983 | /* check the sense key */ |
| 2984 | sense_key = 0xf & cmd->err_info->SenseInfo[2]; |
| 2985 | /* no status or recovered error */ |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2986 | if (((sense_key == 0x0) || (sense_key == 0x1)) && !blk_pc_request(cmd->rq)) |
| 2987 | error_value = 0; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 2988 | |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 2989 | if (check_for_unit_attention(h, cmd)) { |
| 2990 | *retry_cmd = !blk_pc_request(cmd->rq); |
| 2991 | return 0; |
| 2992 | } |
| 2993 | |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 2994 | if (!blk_pc_request(cmd->rq)) { /* Not SG_IO or similar? */ |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2995 | if (error_value != 0) |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 2996 | printk(KERN_WARNING "cciss: cmd %p has CHECK CONDITION" |
| 2997 | " sense key = 0x%x\n", cmd, sense_key); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2998 | return error_value; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 2999 | } |
| 3000 | |
| 3001 | /* SG_IO or similar, copy sense data back */ |
| 3002 | if (cmd->rq->sense) { |
| 3003 | if (cmd->rq->sense_len > cmd->err_info->SenseLen) |
| 3004 | cmd->rq->sense_len = cmd->err_info->SenseLen; |
| 3005 | memcpy(cmd->rq->sense, cmd->err_info->SenseInfo, |
| 3006 | cmd->rq->sense_len); |
| 3007 | } else |
| 3008 | cmd->rq->sense_len = 0; |
| 3009 | |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3010 | return error_value; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3011 | } |
| 3012 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3013 | /* 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] | 3014 | * buffers for the completed job. Note that this function does not need |
| 3015 | * to hold the hba/queue lock. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3016 | */ |
| 3017 | static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd, |
| 3018 | int timeout) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3019 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3020 | int retry_cmd = 0; |
Mike Miller (OS Dev) | 198b766 | 2007-05-08 00:29:34 -0700 | [diff] [blame] | 3021 | struct request *rq = cmd->rq; |
| 3022 | |
| 3023 | rq->errors = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3024 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3025 | if (timeout) |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3026 | rq->errors = make_status_bytes(0, 0, 0, DRIVER_TIMEOUT); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3027 | |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3028 | if (cmd->err_info->CommandStatus == 0) /* no error has occurred */ |
| 3029 | goto after_error_processing; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3030 | |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3031 | switch (cmd->err_info->CommandStatus) { |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3032 | case CMD_TARGET_STATUS: |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3033 | rq->errors = evaluate_target_status(h, cmd, &retry_cmd); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3034 | break; |
| 3035 | case CMD_DATA_UNDERRUN: |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3036 | if (blk_fs_request(cmd->rq)) { |
| 3037 | printk(KERN_WARNING "cciss: cmd %p has" |
| 3038 | " completed with data underrun " |
| 3039 | "reported\n", cmd); |
Tejun Heo | c3a4d78 | 2009-05-07 22:24:37 +0900 | [diff] [blame] | 3040 | cmd->rq->resid_len = cmd->err_info->ResidualCnt; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3041 | } |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3042 | break; |
| 3043 | case CMD_DATA_OVERRUN: |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3044 | if (blk_fs_request(cmd->rq)) |
| 3045 | printk(KERN_WARNING "cciss: cmd %p has" |
| 3046 | " completed with data overrun " |
| 3047 | "reported\n", cmd); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3048 | break; |
| 3049 | case CMD_INVALID: |
| 3050 | printk(KERN_WARNING "cciss: cmd %p is " |
| 3051 | "reported invalid\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3052 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3053 | cmd->err_info->CommandStatus, DRIVER_OK, |
| 3054 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3055 | break; |
| 3056 | case CMD_PROTOCOL_ERR: |
| 3057 | printk(KERN_WARNING "cciss: cmd %p has " |
| 3058 | "protocol error \n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3059 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3060 | cmd->err_info->CommandStatus, DRIVER_OK, |
| 3061 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3062 | break; |
| 3063 | case CMD_HARDWARE_ERR: |
| 3064 | printk(KERN_WARNING "cciss: cmd %p had " |
| 3065 | " hardware error\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3066 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3067 | cmd->err_info->CommandStatus, DRIVER_OK, |
| 3068 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3069 | break; |
| 3070 | case CMD_CONNECTION_LOST: |
| 3071 | printk(KERN_WARNING "cciss: cmd %p had " |
| 3072 | "connection lost\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3073 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3074 | cmd->err_info->CommandStatus, DRIVER_OK, |
| 3075 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3076 | break; |
| 3077 | case CMD_ABORTED: |
| 3078 | printk(KERN_WARNING "cciss: cmd %p was " |
| 3079 | "aborted\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3080 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3081 | cmd->err_info->CommandStatus, DRIVER_OK, |
| 3082 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ABORT); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3083 | break; |
| 3084 | case CMD_ABORT_FAILED: |
| 3085 | printk(KERN_WARNING "cciss: cmd %p reports " |
| 3086 | "abort failed\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3087 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3088 | cmd->err_info->CommandStatus, DRIVER_OK, |
| 3089 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3090 | break; |
| 3091 | case CMD_UNSOLICITED_ABORT: |
| 3092 | printk(KERN_WARNING "cciss%d: unsolicited " |
| 3093 | "abort %p\n", h->ctlr, cmd); |
| 3094 | if (cmd->retry_count < MAX_CMD_RETRIES) { |
| 3095 | retry_cmd = 1; |
| 3096 | printk(KERN_WARNING |
| 3097 | "cciss%d: retrying %p\n", h->ctlr, cmd); |
| 3098 | cmd->retry_count++; |
| 3099 | } else |
| 3100 | printk(KERN_WARNING |
| 3101 | "cciss%d: %p retried too " |
| 3102 | "many times\n", h->ctlr, cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3103 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3104 | cmd->err_info->CommandStatus, DRIVER_OK, |
| 3105 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ABORT); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3106 | break; |
| 3107 | case CMD_TIMEOUT: |
| 3108 | printk(KERN_WARNING "cciss: cmd %p timedout\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3109 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3110 | cmd->err_info->CommandStatus, DRIVER_OK, |
| 3111 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3112 | break; |
| 3113 | default: |
| 3114 | printk(KERN_WARNING "cciss: cmd %p returned " |
| 3115 | "unknown status %x\n", cmd, |
| 3116 | cmd->err_info->CommandStatus); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3117 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3118 | cmd->err_info->CommandStatus, DRIVER_OK, |
| 3119 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3120 | } |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3121 | |
| 3122 | after_error_processing: |
| 3123 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3124 | /* We need to return this command */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3125 | if (retry_cmd) { |
| 3126 | resend_cciss_cmd(h, cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3127 | return; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3128 | } |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3129 | cmd->rq->completion_data = cmd; |
Jens Axboe | a9925a0 | 2006-01-09 16:04:06 +0100 | [diff] [blame] | 3130 | blk_complete_request(cmd->rq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3131 | } |
| 3132 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3133 | /* |
| 3134 | * Get a request and submit it to the controller. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3135 | */ |
Jens Axboe | 165125e | 2007-07-24 09:28:11 +0200 | [diff] [blame] | 3136 | static void do_cciss_request(struct request_queue *q) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3137 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3138 | ctlr_info_t *h = q->queuedata; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3139 | CommandList_struct *c; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 3140 | sector_t start_blk; |
| 3141 | int seg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3142 | struct request *creq; |
| 3143 | u64bit temp64; |
| 3144 | struct scatterlist tmp_sg[MAXSGENTRIES]; |
| 3145 | drive_info_struct *drv; |
| 3146 | int i, dir; |
| 3147 | |
| 3148 | /* We call start_io here in case there is a command waiting on the |
| 3149 | * queue that has not been sent. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3150 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3151 | if (blk_queue_plugged(q)) |
| 3152 | goto startio; |
| 3153 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3154 | queue: |
Tejun Heo | 9934c8c | 2009-05-08 11:54:16 +0900 | [diff] [blame] | 3155 | creq = blk_peek_request(q); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3156 | if (!creq) |
| 3157 | goto startio; |
| 3158 | |
Eric Sesterhenn | 089fe1b | 2006-03-24 18:50:27 +0100 | [diff] [blame] | 3159 | BUG_ON(creq->nr_phys_segments > MAXSGENTRIES); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3160 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3161 | if ((c = cmd_alloc(h, 1)) == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3162 | goto full; |
| 3163 | |
Tejun Heo | 9934c8c | 2009-05-08 11:54:16 +0900 | [diff] [blame] | 3164 | blk_start_request(creq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3165 | |
| 3166 | spin_unlock_irq(q->queue_lock); |
| 3167 | |
| 3168 | c->cmd_type = CMD_RWREQ; |
| 3169 | c->rq = creq; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3170 | |
| 3171 | /* fill in the request */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3172 | drv = creq->rq_disk->private_data; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3173 | c->Header.ReplyQueue = 0; // unused in simple mode |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 3174 | /* got command from pool, so use the command block index instead */ |
| 3175 | /* for direct lookups. */ |
| 3176 | /* The first 2 bits are reserved for controller error reporting. */ |
| 3177 | c->Header.Tag.lower = (c->cmdindex << 3); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3178 | c->Header.Tag.lower |= 0x04; /* flag for direct lookup. */ |
| 3179 | c->Header.LUN.LogDev.VolId = drv->LunID; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3180 | c->Header.LUN.LogDev.Mode = 1; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3181 | c->Request.CDBLen = 10; // 12 byte commands not in FW yet; |
| 3182 | c->Request.Type.Type = TYPE_CMD; // It is a command. |
| 3183 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 3184 | c->Request.Type.Direction = |
Mike Miller | a52de24 | 2006-12-18 11:00:14 +0100 | [diff] [blame] | 3185 | (rq_data_dir(creq) == READ) ? XFER_READ : XFER_WRITE; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3186 | c->Request.Timeout = 0; // Don't time out |
| 3187 | c->Request.CDB[0] = |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 3188 | (rq_data_dir(creq) == READ) ? h->cciss_read : h->cciss_write; |
Tejun Heo | 83096eb | 2009-05-07 22:24:39 +0900 | [diff] [blame] | 3189 | start_blk = blk_rq_pos(creq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3190 | #ifdef CCISS_DEBUG |
Tejun Heo | 83096eb | 2009-05-07 22:24:39 +0900 | [diff] [blame] | 3191 | printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n", |
| 3192 | (int)blk_rq_pos(creq), (int)blk_rq_sectors(creq)); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3193 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3194 | |
Jens Axboe | 45711f1 | 2007-10-22 21:19:53 +0200 | [diff] [blame] | 3195 | sg_init_table(tmp_sg, MAXSGENTRIES); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3196 | seg = blk_rq_map_sg(q, creq, tmp_sg); |
| 3197 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3198 | /* get the DMA records for the setup */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3199 | if (c->Request.Type.Direction == XFER_READ) |
| 3200 | dir = PCI_DMA_FROMDEVICE; |
| 3201 | else |
| 3202 | dir = PCI_DMA_TODEVICE; |
| 3203 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3204 | for (i = 0; i < seg; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3205 | c->SG[i].Len = tmp_sg[i].length; |
Jens Axboe | 45711f1 | 2007-10-22 21:19:53 +0200 | [diff] [blame] | 3206 | temp64.val = (__u64) pci_map_page(h->pdev, sg_page(&tmp_sg[i]), |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3207 | tmp_sg[i].offset, |
| 3208 | tmp_sg[i].length, dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3209 | c->SG[i].Addr.lower = temp64.val32.lower; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3210 | c->SG[i].Addr.upper = temp64.val32.upper; |
| 3211 | c->SG[i].Ext = 0; // we are not chaining |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3212 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3213 | /* track how many SG entries we are using */ |
| 3214 | if (seg > h->maxSG) |
| 3215 | h->maxSG = seg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3216 | |
| 3217 | #ifdef CCISS_DEBUG |
Tejun Heo | 83096eb | 2009-05-07 22:24:39 +0900 | [diff] [blame] | 3218 | printk(KERN_DEBUG "cciss: Submitting %u sectors in %d segments\n", |
| 3219 | blk_rq_sectors(creq), seg); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3220 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3221 | |
| 3222 | c->Header.SGList = c->Header.SGTotal = seg; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3223 | if (likely(blk_fs_request(creq))) { |
| 3224 | if(h->cciss_read == CCISS_READ_10) { |
| 3225 | c->Request.CDB[1] = 0; |
| 3226 | c->Request.CDB[2] = (start_blk >> 24) & 0xff; //MSB |
| 3227 | c->Request.CDB[3] = (start_blk >> 16) & 0xff; |
| 3228 | c->Request.CDB[4] = (start_blk >> 8) & 0xff; |
| 3229 | c->Request.CDB[5] = start_blk & 0xff; |
| 3230 | c->Request.CDB[6] = 0; // (sect >> 24) & 0xff; MSB |
Tejun Heo | 83096eb | 2009-05-07 22:24:39 +0900 | [diff] [blame] | 3231 | c->Request.CDB[7] = (blk_rq_sectors(creq) >> 8) & 0xff; |
| 3232 | c->Request.CDB[8] = blk_rq_sectors(creq) & 0xff; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3233 | c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0; |
| 3234 | } else { |
Randy Dunlap | 582539e | 2008-02-06 01:36:54 -0800 | [diff] [blame] | 3235 | u32 upper32 = upper_32_bits(start_blk); |
| 3236 | |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3237 | c->Request.CDBLen = 16; |
| 3238 | c->Request.CDB[1]= 0; |
Randy Dunlap | 582539e | 2008-02-06 01:36:54 -0800 | [diff] [blame] | 3239 | c->Request.CDB[2]= (upper32 >> 24) & 0xff; //MSB |
| 3240 | c->Request.CDB[3]= (upper32 >> 16) & 0xff; |
| 3241 | c->Request.CDB[4]= (upper32 >> 8) & 0xff; |
| 3242 | c->Request.CDB[5]= upper32 & 0xff; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3243 | c->Request.CDB[6]= (start_blk >> 24) & 0xff; |
| 3244 | c->Request.CDB[7]= (start_blk >> 16) & 0xff; |
| 3245 | c->Request.CDB[8]= (start_blk >> 8) & 0xff; |
| 3246 | c->Request.CDB[9]= start_blk & 0xff; |
Tejun Heo | 83096eb | 2009-05-07 22:24:39 +0900 | [diff] [blame] | 3247 | c->Request.CDB[10]= (blk_rq_sectors(creq) >> 24) & 0xff; |
| 3248 | c->Request.CDB[11]= (blk_rq_sectors(creq) >> 16) & 0xff; |
| 3249 | c->Request.CDB[12]= (blk_rq_sectors(creq) >> 8) & 0xff; |
| 3250 | c->Request.CDB[13]= blk_rq_sectors(creq) & 0xff; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3251 | c->Request.CDB[14] = c->Request.CDB[15] = 0; |
| 3252 | } |
| 3253 | } else if (blk_pc_request(creq)) { |
| 3254 | c->Request.CDBLen = creq->cmd_len; |
| 3255 | memcpy(c->Request.CDB, creq->cmd, BLK_MAX_CDB); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 3256 | } else { |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3257 | printk(KERN_WARNING "cciss%d: bad request type %d\n", h->ctlr, creq->cmd_type); |
| 3258 | BUG(); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 3259 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3260 | |
| 3261 | spin_lock_irq(q->queue_lock); |
| 3262 | |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 3263 | addQ(&h->reqQ, c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3264 | h->Qdepth++; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3265 | if (h->Qdepth > h->maxQsinceinit) |
| 3266 | h->maxQsinceinit = h->Qdepth; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3267 | |
| 3268 | goto queue; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 3269 | full: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3270 | blk_stop_queue(q); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 3271 | startio: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3272 | /* We will already have the driver lock here so not need |
| 3273 | * to lock it. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3274 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3275 | start_io(h); |
| 3276 | } |
| 3277 | |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3278 | static inline unsigned long get_next_completion(ctlr_info_t *h) |
| 3279 | { |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3280 | return h->access.command_completed(h); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3281 | } |
| 3282 | |
| 3283 | static inline int interrupt_pending(ctlr_info_t *h) |
| 3284 | { |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3285 | return h->access.intr_pending(h); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3286 | } |
| 3287 | |
| 3288 | static inline long interrupt_not_for_us(ctlr_info_t *h) |
| 3289 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3290 | return (((h->access.intr_pending(h) == 0) || |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3291 | (h->interrupts_enabled == 0))); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3292 | } |
| 3293 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 3294 | static irqreturn_t do_cciss_intr(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3295 | { |
| 3296 | ctlr_info_t *h = dev_id; |
| 3297 | CommandList_struct *c; |
| 3298 | unsigned long flags; |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 3299 | __u32 a, a1, a2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3300 | |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3301 | if (interrupt_not_for_us(h)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3302 | return IRQ_NONE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3303 | /* |
| 3304 | * If there are completed commands in the completion queue, |
| 3305 | * we had better do something about it. |
| 3306 | */ |
| 3307 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3308 | while (interrupt_pending(h)) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3309 | while ((a = get_next_completion(h)) != FIFO_EMPTY) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3310 | a1 = a; |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 3311 | if ((a & 0x04)) { |
| 3312 | a2 = (a >> 3); |
Mike Miller | f880632 | 2006-12-06 20:35:01 -0800 | [diff] [blame] | 3313 | if (a2 >= h->nr_cmds) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3314 | printk(KERN_WARNING |
| 3315 | "cciss: controller cciss%d failed, stopping.\n", |
| 3316 | h->ctlr); |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 3317 | fail_all_cmds(h->ctlr); |
| 3318 | return IRQ_HANDLED; |
| 3319 | } |
| 3320 | |
| 3321 | c = h->cmd_pool + a2; |
| 3322 | a = c->busaddr; |
| 3323 | |
| 3324 | } else { |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 3325 | struct hlist_node *tmp; |
| 3326 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3327 | a &= ~3; |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 3328 | c = NULL; |
| 3329 | hlist_for_each_entry(c, tmp, &h->cmpQ, list) { |
| 3330 | if (c->busaddr == a) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3331 | break; |
| 3332 | } |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 3333 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3334 | /* |
| 3335 | * If we've found the command, take it off the |
| 3336 | * completion Q and free it |
| 3337 | */ |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 3338 | if (c && c->busaddr == a) { |
| 3339 | removeQ(c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3340 | if (c->cmd_type == CMD_RWREQ) { |
| 3341 | complete_command(h, c, 0); |
| 3342 | } else if (c->cmd_type == CMD_IOCTL_PEND) { |
| 3343 | complete(c->waiting); |
| 3344 | } |
| 3345 | # ifdef CONFIG_CISS_SCSI_TAPE |
| 3346 | else if (c->cmd_type == CMD_SCSI) |
| 3347 | complete_scsi_command(c, 0, a1); |
| 3348 | # endif |
| 3349 | continue; |
| 3350 | } |
| 3351 | } |
| 3352 | } |
| 3353 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3354 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
| 3355 | return IRQ_HANDLED; |
| 3356 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3357 | |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3358 | /** |
| 3359 | * add_to_scan_list() - add controller to rescan queue |
| 3360 | * @h: Pointer to the controller. |
| 3361 | * |
| 3362 | * Adds the controller to the rescan queue if not already on the queue. |
| 3363 | * |
| 3364 | * returns 1 if added to the queue, 0 if skipped (could be on the |
| 3365 | * queue already, or the controller could be initializing or shutting |
| 3366 | * down). |
| 3367 | **/ |
| 3368 | static int add_to_scan_list(struct ctlr_info *h) |
| 3369 | { |
| 3370 | struct ctlr_info *test_h; |
| 3371 | int found = 0; |
| 3372 | int ret = 0; |
| 3373 | |
| 3374 | if (h->busy_initializing) |
| 3375 | return 0; |
| 3376 | |
| 3377 | if (!mutex_trylock(&h->busy_shutting_down)) |
| 3378 | return 0; |
| 3379 | |
| 3380 | mutex_lock(&scan_mutex); |
| 3381 | list_for_each_entry(test_h, &scan_q, scan_list) { |
| 3382 | if (test_h == h) { |
| 3383 | found = 1; |
| 3384 | break; |
| 3385 | } |
| 3386 | } |
| 3387 | if (!found && !h->busy_scanning) { |
| 3388 | INIT_COMPLETION(h->scan_wait); |
| 3389 | list_add_tail(&h->scan_list, &scan_q); |
| 3390 | ret = 1; |
| 3391 | } |
| 3392 | mutex_unlock(&scan_mutex); |
| 3393 | mutex_unlock(&h->busy_shutting_down); |
| 3394 | |
| 3395 | return ret; |
| 3396 | } |
| 3397 | |
| 3398 | /** |
| 3399 | * remove_from_scan_list() - remove controller from rescan queue |
| 3400 | * @h: Pointer to the controller. |
| 3401 | * |
| 3402 | * Removes the controller from the rescan queue if present. Blocks if |
| 3403 | * the controller is currently conducting a rescan. |
| 3404 | **/ |
| 3405 | static void remove_from_scan_list(struct ctlr_info *h) |
| 3406 | { |
| 3407 | struct ctlr_info *test_h, *tmp_h; |
| 3408 | int scanning = 0; |
| 3409 | |
| 3410 | mutex_lock(&scan_mutex); |
| 3411 | list_for_each_entry_safe(test_h, tmp_h, &scan_q, scan_list) { |
| 3412 | if (test_h == h) { |
| 3413 | list_del(&h->scan_list); |
| 3414 | complete_all(&h->scan_wait); |
| 3415 | mutex_unlock(&scan_mutex); |
| 3416 | return; |
| 3417 | } |
| 3418 | } |
| 3419 | if (&h->busy_scanning) |
| 3420 | scanning = 0; |
| 3421 | mutex_unlock(&scan_mutex); |
| 3422 | |
| 3423 | if (scanning) |
| 3424 | wait_for_completion(&h->scan_wait); |
| 3425 | } |
| 3426 | |
| 3427 | /** |
| 3428 | * scan_thread() - kernel thread used to rescan controllers |
| 3429 | * @data: Ignored. |
| 3430 | * |
| 3431 | * A kernel thread used scan for drive topology changes on |
| 3432 | * controllers. The thread processes only one controller at a time |
| 3433 | * using a queue. Controllers are added to the queue using |
| 3434 | * add_to_scan_list() and removed from the queue either after done |
| 3435 | * processing or using remove_from_scan_list(). |
| 3436 | * |
| 3437 | * returns 0. |
| 3438 | **/ |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3439 | static int scan_thread(void *data) |
| 3440 | { |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3441 | struct ctlr_info *h; |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3442 | |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3443 | while (1) { |
| 3444 | set_current_state(TASK_INTERRUPTIBLE); |
| 3445 | schedule(); |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3446 | if (kthread_should_stop()) |
| 3447 | break; |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3448 | |
| 3449 | while (1) { |
| 3450 | mutex_lock(&scan_mutex); |
| 3451 | if (list_empty(&scan_q)) { |
| 3452 | mutex_unlock(&scan_mutex); |
| 3453 | break; |
| 3454 | } |
| 3455 | |
| 3456 | h = list_entry(scan_q.next, |
| 3457 | struct ctlr_info, |
| 3458 | scan_list); |
| 3459 | list_del(&h->scan_list); |
| 3460 | h->busy_scanning = 1; |
| 3461 | mutex_unlock(&scan_mutex); |
| 3462 | |
| 3463 | if (h) { |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 3464 | rebuild_lun_table(h, 0, 0); |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3465 | complete_all(&h->scan_wait); |
| 3466 | mutex_lock(&scan_mutex); |
| 3467 | h->busy_scanning = 0; |
| 3468 | mutex_unlock(&scan_mutex); |
| 3469 | } |
| 3470 | } |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3471 | } |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3472 | |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3473 | return 0; |
| 3474 | } |
| 3475 | |
| 3476 | static int check_for_unit_attention(ctlr_info_t *h, CommandList_struct *c) |
| 3477 | { |
| 3478 | if (c->err_info->SenseInfo[2] != UNIT_ATTENTION) |
| 3479 | return 0; |
| 3480 | |
| 3481 | switch (c->err_info->SenseInfo[12]) { |
| 3482 | case STATE_CHANGED: |
| 3483 | printk(KERN_WARNING "cciss%d: a state change " |
| 3484 | "detected, command retried\n", h->ctlr); |
| 3485 | return 1; |
| 3486 | break; |
| 3487 | case LUN_FAILED: |
| 3488 | printk(KERN_WARNING "cciss%d: LUN failure " |
| 3489 | "detected, action required\n", h->ctlr); |
| 3490 | return 1; |
| 3491 | break; |
| 3492 | case REPORT_LUNS_CHANGED: |
| 3493 | printk(KERN_WARNING "cciss%d: report LUN data " |
| 3494 | "changed\n", h->ctlr); |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3495 | add_to_scan_list(h); |
| 3496 | wake_up_process(cciss_scan_thread); |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3497 | return 1; |
| 3498 | break; |
| 3499 | case POWER_OR_RESET: |
| 3500 | printk(KERN_WARNING "cciss%d: a power on " |
| 3501 | "or device reset detected\n", h->ctlr); |
| 3502 | return 1; |
| 3503 | break; |
| 3504 | case UNIT_ATTENTION_CLEARED: |
| 3505 | printk(KERN_WARNING "cciss%d: unit attention " |
| 3506 | "cleared by another initiator\n", h->ctlr); |
| 3507 | return 1; |
| 3508 | break; |
| 3509 | default: |
| 3510 | printk(KERN_WARNING "cciss%d: unknown " |
| 3511 | "unit attention detected\n", h->ctlr); |
| 3512 | return 1; |
| 3513 | } |
| 3514 | } |
| 3515 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3516 | /* |
Bjorn Helgaas | d14c4ab | 2006-06-25 05:49:04 -0700 | [diff] [blame] | 3517 | * We cannot read the structure directly, for portability we must use |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3518 | * the io functions. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3519 | * This is for debug only. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3520 | */ |
| 3521 | #ifdef CCISS_DEBUG |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3522 | static void print_cfg_table(CfgTable_struct *tb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3523 | { |
| 3524 | int i; |
| 3525 | char temp_name[17]; |
| 3526 | |
| 3527 | printk("Controller Configuration information\n"); |
| 3528 | printk("------------------------------------\n"); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3529 | for (i = 0; i < 4; i++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3530 | temp_name[i] = readb(&(tb->Signature[i])); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3531 | temp_name[4] = '\0'; |
| 3532 | printk(" Signature = %s\n", temp_name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3533 | printk(" Spec Number = %d\n", readl(&(tb->SpecValence))); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3534 | printk(" Transport methods supported = 0x%x\n", |
| 3535 | readl(&(tb->TransportSupport))); |
| 3536 | printk(" Transport methods active = 0x%x\n", |
| 3537 | readl(&(tb->TransportActive))); |
| 3538 | printk(" Requested transport Method = 0x%x\n", |
| 3539 | readl(&(tb->HostWrite.TransportRequest))); |
Bjorn Helgaas | d14c4ab | 2006-06-25 05:49:04 -0700 | [diff] [blame] | 3540 | printk(" Coalesce Interrupt Delay = 0x%x\n", |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3541 | readl(&(tb->HostWrite.CoalIntDelay))); |
Bjorn Helgaas | d14c4ab | 2006-06-25 05:49:04 -0700 | [diff] [blame] | 3542 | printk(" Coalesce Interrupt Count = 0x%x\n", |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3543 | readl(&(tb->HostWrite.CoalIntCount))); |
| 3544 | printk(" Max outstanding commands = 0x%d\n", |
| 3545 | readl(&(tb->CmdsOutMax))); |
| 3546 | printk(" Bus Types = 0x%x\n", readl(&(tb->BusTypes))); |
| 3547 | for (i = 0; i < 16; i++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3548 | temp_name[i] = readb(&(tb->ServerName[i])); |
| 3549 | temp_name[16] = '\0'; |
| 3550 | printk(" Server Name = %s\n", temp_name); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3551 | printk(" Heartbeat Counter = 0x%x\n\n\n", readl(&(tb->HeartBeat))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3552 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3553 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3554 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3555 | 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] | 3556 | { |
| 3557 | int i, offset, mem_type, bar_type; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3558 | if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3559 | return 0; |
| 3560 | offset = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3561 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { |
| 3562 | bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3563 | if (bar_type == PCI_BASE_ADDRESS_SPACE_IO) |
| 3564 | offset += 4; |
| 3565 | else { |
| 3566 | mem_type = pci_resource_flags(pdev, i) & |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3567 | PCI_BASE_ADDRESS_MEM_TYPE_MASK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3568 | switch (mem_type) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3569 | case PCI_BASE_ADDRESS_MEM_TYPE_32: |
| 3570 | case PCI_BASE_ADDRESS_MEM_TYPE_1M: |
| 3571 | offset += 4; /* 32 bit */ |
| 3572 | break; |
| 3573 | case PCI_BASE_ADDRESS_MEM_TYPE_64: |
| 3574 | offset += 8; |
| 3575 | break; |
| 3576 | default: /* reserved in PCI 2.2 */ |
| 3577 | printk(KERN_WARNING |
| 3578 | "Base address is invalid\n"); |
| 3579 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3580 | break; |
| 3581 | } |
| 3582 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3583 | if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0) |
| 3584 | return i + 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3585 | } |
| 3586 | return -1; |
| 3587 | } |
| 3588 | |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3589 | /* If MSI/MSI-X is supported by the kernel we will try to enable it on |
| 3590 | * controllers that are capable. If not, we use IO-APIC mode. |
| 3591 | */ |
| 3592 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3593 | static void __devinit cciss_interrupt_mode(ctlr_info_t *c, |
| 3594 | struct pci_dev *pdev, __u32 board_id) |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3595 | { |
| 3596 | #ifdef CONFIG_PCI_MSI |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3597 | int err; |
| 3598 | struct msix_entry cciss_msix_entries[4] = { {0, 0}, {0, 1}, |
| 3599 | {0, 2}, {0, 3} |
| 3600 | }; |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3601 | |
| 3602 | /* Some boards advertise MSI but don't really support it */ |
| 3603 | if ((board_id == 0x40700E11) || |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3604 | (board_id == 0x40800E11) || |
| 3605 | (board_id == 0x40820E11) || (board_id == 0x40830E11)) |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3606 | goto default_int_mode; |
| 3607 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3608 | if (pci_find_capability(pdev, PCI_CAP_ID_MSIX)) { |
| 3609 | err = pci_enable_msix(pdev, cciss_msix_entries, 4); |
| 3610 | if (!err) { |
| 3611 | c->intr[0] = cciss_msix_entries[0].vector; |
| 3612 | c->intr[1] = cciss_msix_entries[1].vector; |
| 3613 | c->intr[2] = cciss_msix_entries[2].vector; |
| 3614 | c->intr[3] = cciss_msix_entries[3].vector; |
| 3615 | c->msix_vector = 1; |
| 3616 | return; |
| 3617 | } |
| 3618 | if (err > 0) { |
| 3619 | printk(KERN_WARNING "cciss: only %d MSI-X vectors " |
| 3620 | "available\n", err); |
Mike Miller | 1ecb9c0 | 2006-12-06 20:35:13 -0800 | [diff] [blame] | 3621 | goto default_int_mode; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3622 | } else { |
| 3623 | printk(KERN_WARNING "cciss: MSI-X init failed %d\n", |
| 3624 | err); |
Mike Miller | 1ecb9c0 | 2006-12-06 20:35:13 -0800 | [diff] [blame] | 3625 | goto default_int_mode; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3626 | } |
| 3627 | } |
| 3628 | if (pci_find_capability(pdev, PCI_CAP_ID_MSI)) { |
| 3629 | if (!pci_enable_msi(pdev)) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3630 | c->msi_vector = 1; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3631 | } else { |
| 3632 | printk(KERN_WARNING "cciss: MSI init failed\n"); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3633 | } |
| 3634 | } |
Mike Miller | 1ecb9c0 | 2006-12-06 20:35:13 -0800 | [diff] [blame] | 3635 | default_int_mode: |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3636 | #endif /* CONFIG_PCI_MSI */ |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3637 | /* 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] | 3638 | c->intr[SIMPLE_MODE_INT] = pdev->irq; |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3639 | return; |
| 3640 | } |
| 3641 | |
Randy Dunlap | 7d1fd97 | 2008-01-14 00:55:17 -0800 | [diff] [blame] | 3642 | 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] | 3643 | { |
| 3644 | ushort subsystem_vendor_id, subsystem_device_id, command; |
| 3645 | __u32 board_id, scratchpad = 0; |
| 3646 | __u64 cfg_offset; |
| 3647 | __u32 cfg_base_addr; |
| 3648 | __u64 cfg_base_addr_index; |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 3649 | int i, err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3650 | |
| 3651 | /* check to see if controller has been disabled */ |
| 3652 | /* BEFORE trying to enable it */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3653 | (void)pci_read_config_word(pdev, PCI_COMMAND, &command); |
| 3654 | if (!(command & 0x02)) { |
| 3655 | printk(KERN_WARNING |
| 3656 | "cciss: controller appears to be disabled\n"); |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 3657 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3658 | } |
| 3659 | |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 3660 | err = pci_enable_device(pdev); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3661 | if (err) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3662 | printk(KERN_ERR "cciss: Unable to Enable PCI device\n"); |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 3663 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3664 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3665 | |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 3666 | err = pci_request_regions(pdev, "cciss"); |
| 3667 | if (err) { |
| 3668 | printk(KERN_ERR "cciss: Cannot obtain PCI resources, " |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3669 | "aborting\n"); |
Mike Miller | 872225c | 2006-12-13 00:34:22 -0800 | [diff] [blame] | 3670 | return err; |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 3671 | } |
| 3672 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3673 | subsystem_vendor_id = pdev->subsystem_vendor; |
| 3674 | subsystem_device_id = pdev->subsystem_device; |
| 3675 | board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3676 | subsystem_vendor_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3677 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3678 | #ifdef CCISS_DEBUG |
| 3679 | printk("command = %x\n", command); |
| 3680 | printk("irq = %x\n", pdev->irq); |
| 3681 | printk("board_id = %x\n", board_id); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3682 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3683 | |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3684 | /* If the kernel supports MSI/MSI-X we will try to enable that functionality, |
| 3685 | * else we use the IO-APIC interrupt assigned to us by system ROM. |
| 3686 | */ |
| 3687 | cciss_interrupt_mode(c, pdev, board_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3688 | |
Mike Miller | e143858 | 2009-04-02 12:50:56 -0700 | [diff] [blame] | 3689 | /* find the memory BAR */ |
| 3690 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { |
| 3691 | if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) |
| 3692 | break; |
| 3693 | } |
| 3694 | if (i == DEVICE_COUNT_RESOURCE) { |
| 3695 | printk(KERN_WARNING "cciss: No memory BAR found\n"); |
| 3696 | err = -ENODEV; |
| 3697 | goto err_out_free_res; |
| 3698 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3699 | |
Mike Miller | e143858 | 2009-04-02 12:50:56 -0700 | [diff] [blame] | 3700 | c->paddr = pci_resource_start(pdev, i); /* addressing mode bits |
| 3701 | * already removed |
| 3702 | */ |
| 3703 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3704 | #ifdef CCISS_DEBUG |
Randy Dunlap | 9f92f47 | 2008-11-19 15:36:51 -0800 | [diff] [blame] | 3705 | printk("address 0 = %lx\n", c->paddr); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3706 | #endif /* CCISS_DEBUG */ |
Mike Miller | a5b9287 | 2006-12-13 00:34:21 -0800 | [diff] [blame] | 3707 | c->vaddr = remap_pci_mem(c->paddr, 0x250); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3708 | |
| 3709 | /* Wait for the board to become ready. (PCI hotplug needs this.) |
| 3710 | * We poll for up to 120 secs, once per 100ms. */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3711 | for (i = 0; i < 1200; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3712 | scratchpad = readl(c->vaddr + SA5_SCRATCHPAD_OFFSET); |
| 3713 | if (scratchpad == CCISS_FIRMWARE_READY) |
| 3714 | break; |
| 3715 | set_current_state(TASK_INTERRUPTIBLE); |
Randy Dunlap | 4d76160 | 2009-09-18 12:58:48 -0700 | [diff] [blame] | 3716 | schedule_timeout(msecs_to_jiffies(100)); /* wait 100ms */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3717 | } |
| 3718 | if (scratchpad != CCISS_FIRMWARE_READY) { |
| 3719 | printk(KERN_WARNING "cciss: Board not ready. Timed out.\n"); |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 3720 | err = -ENODEV; |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 3721 | goto err_out_free_res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3722 | } |
| 3723 | |
| 3724 | /* get the address index number */ |
| 3725 | cfg_base_addr = readl(c->vaddr + SA5_CTCFG_OFFSET); |
| 3726 | cfg_base_addr &= (__u32) 0x0000ffff; |
| 3727 | #ifdef CCISS_DEBUG |
| 3728 | printk("cfg base address = %x\n", cfg_base_addr); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3729 | #endif /* CCISS_DEBUG */ |
| 3730 | cfg_base_addr_index = find_PCI_BAR_index(pdev, cfg_base_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3731 | #ifdef CCISS_DEBUG |
Randy Dunlap | 9f92f47 | 2008-11-19 15:36:51 -0800 | [diff] [blame] | 3732 | printk("cfg base address index = %llx\n", |
| 3733 | (unsigned long long)cfg_base_addr_index); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3734 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3735 | if (cfg_base_addr_index == -1) { |
| 3736 | printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n"); |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 3737 | err = -ENODEV; |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 3738 | goto err_out_free_res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3739 | } |
| 3740 | |
| 3741 | cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET); |
| 3742 | #ifdef CCISS_DEBUG |
Randy Dunlap | 9f92f47 | 2008-11-19 15:36:51 -0800 | [diff] [blame] | 3743 | printk("cfg offset = %llx\n", (unsigned long long)cfg_offset); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3744 | #endif /* CCISS_DEBUG */ |
| 3745 | c->cfgtable = remap_pci_mem(pci_resource_start(pdev, |
| 3746 | cfg_base_addr_index) + |
| 3747 | cfg_offset, sizeof(CfgTable_struct)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3748 | c->board_id = board_id; |
| 3749 | |
| 3750 | #ifdef CCISS_DEBUG |
Tobias Klauser | 945f390 | 2006-01-08 01:05:11 -0800 | [diff] [blame] | 3751 | print_cfg_table(c->cfgtable); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3752 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3753 | |
Mike Miller | 4915399 | 2008-07-04 10:00:02 -0700 | [diff] [blame] | 3754 | /* Some controllers support Zero Memory Raid (ZMR). |
| 3755 | * When configured in ZMR mode the number of supported |
| 3756 | * commands drops to 64. So instead of just setting an |
| 3757 | * arbitrary value we make the driver a little smarter. |
| 3758 | * We read the config table to tell us how many commands |
| 3759 | * are supported on the controller then subtract 4 to |
| 3760 | * leave a little room for ioctl calls. |
| 3761 | */ |
| 3762 | c->max_commands = readl(&(c->cfgtable->CmdsOutMax)); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3763 | for (i = 0; i < ARRAY_SIZE(products); i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3764 | if (board_id == products[i].board_id) { |
| 3765 | c->product_name = products[i].product_name; |
| 3766 | c->access = *(products[i].access); |
Mike Miller | 4915399 | 2008-07-04 10:00:02 -0700 | [diff] [blame] | 3767 | c->nr_cmds = c->max_commands - 4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3768 | break; |
| 3769 | } |
| 3770 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3771 | if ((readb(&c->cfgtable->Signature[0]) != 'C') || |
| 3772 | (readb(&c->cfgtable->Signature[1]) != 'I') || |
| 3773 | (readb(&c->cfgtable->Signature[2]) != 'S') || |
| 3774 | (readb(&c->cfgtable->Signature[3]) != 'S')) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3775 | printk("Does not appear to be a valid CISS config table\n"); |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 3776 | err = -ENODEV; |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 3777 | goto err_out_free_res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3778 | } |
Mike Miller | 4ff9a9a | 2006-12-06 20:35:00 -0800 | [diff] [blame] | 3779 | /* We didn't find the controller in our list. We know the |
| 3780 | * signature is valid. If it's an HP device let's try to |
| 3781 | * bind to the device and fire it up. Otherwise we bail. |
| 3782 | */ |
| 3783 | if (i == ARRAY_SIZE(products)) { |
| 3784 | if (subsystem_vendor_id == PCI_VENDOR_ID_HP) { |
| 3785 | c->product_name = products[i-1].product_name; |
| 3786 | c->access = *(products[i-1].access); |
Mike Miller | 4915399 | 2008-07-04 10:00:02 -0700 | [diff] [blame] | 3787 | c->nr_cmds = c->max_commands - 4; |
Mike Miller | 4ff9a9a | 2006-12-06 20:35:00 -0800 | [diff] [blame] | 3788 | printk(KERN_WARNING "cciss: This is an unknown " |
| 3789 | "Smart Array controller.\n" |
| 3790 | "cciss: Please update to the latest driver " |
| 3791 | "available from www.hp.com.\n"); |
| 3792 | } else { |
| 3793 | printk(KERN_WARNING "cciss: Sorry, I don't know how" |
| 3794 | " to access the Smart Array controller %08lx\n" |
| 3795 | , (unsigned long)board_id); |
| 3796 | err = -ENODEV; |
| 3797 | goto err_out_free_res; |
| 3798 | } |
| 3799 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3800 | #ifdef CONFIG_X86 |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3801 | { |
| 3802 | /* Need to enable prefetch in the SCSI core for 6400 in x86 */ |
| 3803 | __u32 prefetch; |
| 3804 | prefetch = readl(&(c->cfgtable->SCSI_Prefetch)); |
| 3805 | prefetch |= 0x100; |
| 3806 | writel(prefetch, &(c->cfgtable->SCSI_Prefetch)); |
| 3807 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3808 | #endif |
| 3809 | |
Mike Miller (OS Dev) | 8bf50f7 | 2007-10-17 10:10:04 +0200 | [diff] [blame] | 3810 | /* Disabling DMA prefetch and refetch for the P600. |
| 3811 | * An ASIC bug may result in accesses to invalid memory addresses. |
| 3812 | * We've disabled prefetch for some time now. Testing with XEN |
| 3813 | * 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] | 3814 | */ |
| 3815 | if(board_id == 0x3225103C) { |
| 3816 | __u32 dma_prefetch; |
Mike Miller (OS Dev) | 8bf50f7 | 2007-10-17 10:10:04 +0200 | [diff] [blame] | 3817 | __u32 dma_refetch; |
Mike Miller | f92e2f5 | 2006-12-06 20:35:04 -0800 | [diff] [blame] | 3818 | dma_prefetch = readl(c->vaddr + I2O_DMA1_CFG); |
| 3819 | dma_prefetch |= 0x8000; |
| 3820 | writel(dma_prefetch, c->vaddr + I2O_DMA1_CFG); |
Mike Miller (OS Dev) | 8bf50f7 | 2007-10-17 10:10:04 +0200 | [diff] [blame] | 3821 | pci_read_config_dword(pdev, PCI_COMMAND_PARITY, &dma_refetch); |
| 3822 | dma_refetch |= 0x1; |
| 3823 | pci_write_config_dword(pdev, PCI_COMMAND_PARITY, dma_refetch); |
Mike Miller | f92e2f5 | 2006-12-06 20:35:04 -0800 | [diff] [blame] | 3824 | } |
| 3825 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3826 | #ifdef CCISS_DEBUG |
| 3827 | printk("Trying to put board into Simple mode\n"); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3828 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3829 | c->max_commands = readl(&(c->cfgtable->CmdsOutMax)); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3830 | /* Update the field, and then ring the doorbell */ |
| 3831 | writel(CFGTBL_Trans_Simple, &(c->cfgtable->HostWrite.TransportRequest)); |
| 3832 | writel(CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3833 | |
| 3834 | /* under certain very rare conditions, this can take awhile. |
| 3835 | * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right |
| 3836 | * as we enter this code.) */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3837 | for (i = 0; i < MAX_CONFIG_WAIT; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3838 | if (!(readl(c->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq)) |
| 3839 | break; |
| 3840 | /* delay and try again */ |
| 3841 | set_current_state(TASK_INTERRUPTIBLE); |
Randy Dunlap | 4d76160 | 2009-09-18 12:58:48 -0700 | [diff] [blame] | 3842 | schedule_timeout(msecs_to_jiffies(1)); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3843 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3844 | |
| 3845 | #ifdef CCISS_DEBUG |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3846 | printk(KERN_DEBUG "I counter got to %d %x\n", i, |
| 3847 | readl(c->vaddr + SA5_DOORBELL)); |
| 3848 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3849 | #ifdef CCISS_DEBUG |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3850 | print_cfg_table(c->cfgtable); |
| 3851 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3852 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3853 | if (!(readl(&(c->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3854 | printk(KERN_WARNING "cciss: unable to get board into" |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3855 | " simple mode\n"); |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 3856 | err = -ENODEV; |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 3857 | goto err_out_free_res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3858 | } |
| 3859 | return 0; |
| 3860 | |
Linus Torvalds | 5faad62 | 2006-12-13 09:15:34 -0800 | [diff] [blame] | 3861 | err_out_free_res: |
Mike Miller | 872225c | 2006-12-13 00:34:22 -0800 | [diff] [blame] | 3862 | /* |
| 3863 | * Deliberately omit pci_disable_device(): it does something nasty to |
| 3864 | * Smart Array controllers that pci_enable_device does not undo |
| 3865 | */ |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 3866 | pci_release_regions(pdev); |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 3867 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3868 | } |
| 3869 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 3870 | /* Function to find the first free pointer into our hba[] array |
| 3871 | * Returns -1 if no free entries are left. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3872 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3873 | static int alloc_cciss_hba(void) |
| 3874 | { |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 3875 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3876 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3877 | for (i = 0; i < MAX_CTLR; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3878 | if (!hba[i]) { |
| 3879 | ctlr_info_t *p; |
Jesper Juhl | f2912a1 | 2007-07-31 00:39:39 -0700 | [diff] [blame] | 3880 | |
Eric Sesterhenn | 06ff37f | 2006-03-08 11:21:52 +0100 | [diff] [blame] | 3881 | p = kzalloc(sizeof(ctlr_info_t), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3882 | if (!p) |
| 3883 | goto Enomem; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3884 | hba[i] = p; |
| 3885 | return i; |
| 3886 | } |
| 3887 | } |
| 3888 | printk(KERN_WARNING "cciss: This driver supports a maximum" |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3889 | " of %d controllers.\n", MAX_CTLR); |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 3890 | return -1; |
| 3891 | Enomem: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3892 | printk(KERN_ERR "cciss: out of memory.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3893 | return -1; |
| 3894 | } |
| 3895 | |
Stephen M. Cameron | 2c93559 | 2009-09-17 13:47:50 -0500 | [diff] [blame^] | 3896 | static void free_hba(int n) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3897 | { |
Stephen M. Cameron | 2c93559 | 2009-09-17 13:47:50 -0500 | [diff] [blame^] | 3898 | ctlr_info_t *h = hba[n]; |
| 3899 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3900 | |
Stephen M. Cameron | 2c93559 | 2009-09-17 13:47:50 -0500 | [diff] [blame^] | 3901 | hba[n] = NULL; |
| 3902 | for (i = 0; i < h->highest_lun + 1; i++) |
| 3903 | if (h->gendisk[i] != NULL) |
| 3904 | put_disk(h->gendisk[i]); |
| 3905 | kfree(h); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3906 | } |
| 3907 | |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 3908 | /* Send a message CDB to the firmware. */ |
| 3909 | static __devinit int cciss_message(struct pci_dev *pdev, unsigned char opcode, unsigned char type) |
| 3910 | { |
| 3911 | typedef struct { |
| 3912 | CommandListHeader_struct CommandHeader; |
| 3913 | RequestBlock_struct Request; |
| 3914 | ErrDescriptor_struct ErrorDescriptor; |
| 3915 | } Command; |
| 3916 | static const size_t cmd_sz = sizeof(Command) + sizeof(ErrorInfo_struct); |
| 3917 | Command *cmd; |
| 3918 | dma_addr_t paddr64; |
| 3919 | uint32_t paddr32, tag; |
| 3920 | void __iomem *vaddr; |
| 3921 | int i, err; |
| 3922 | |
| 3923 | vaddr = ioremap_nocache(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); |
| 3924 | if (vaddr == NULL) |
| 3925 | return -ENOMEM; |
| 3926 | |
| 3927 | /* The Inbound Post Queue only accepts 32-bit physical addresses for the |
| 3928 | CCISS commands, so they must be allocated from the lower 4GiB of |
| 3929 | memory. */ |
Yang Hongyang | e930438 | 2009-04-13 14:40:14 -0700 | [diff] [blame] | 3930 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 3931 | if (err) { |
| 3932 | iounmap(vaddr); |
| 3933 | return -ENOMEM; |
| 3934 | } |
| 3935 | |
| 3936 | cmd = pci_alloc_consistent(pdev, cmd_sz, &paddr64); |
| 3937 | if (cmd == NULL) { |
| 3938 | iounmap(vaddr); |
| 3939 | return -ENOMEM; |
| 3940 | } |
| 3941 | |
| 3942 | /* This must fit, because of the 32-bit consistent DMA mask. Also, |
| 3943 | although there's no guarantee, we assume that the address is at |
| 3944 | least 4-byte aligned (most likely, it's page-aligned). */ |
| 3945 | paddr32 = paddr64; |
| 3946 | |
| 3947 | cmd->CommandHeader.ReplyQueue = 0; |
| 3948 | cmd->CommandHeader.SGList = 0; |
| 3949 | cmd->CommandHeader.SGTotal = 0; |
| 3950 | cmd->CommandHeader.Tag.lower = paddr32; |
| 3951 | cmd->CommandHeader.Tag.upper = 0; |
| 3952 | memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8); |
| 3953 | |
| 3954 | cmd->Request.CDBLen = 16; |
| 3955 | cmd->Request.Type.Type = TYPE_MSG; |
| 3956 | cmd->Request.Type.Attribute = ATTR_HEADOFQUEUE; |
| 3957 | cmd->Request.Type.Direction = XFER_NONE; |
| 3958 | cmd->Request.Timeout = 0; /* Don't time out */ |
| 3959 | cmd->Request.CDB[0] = opcode; |
| 3960 | cmd->Request.CDB[1] = type; |
| 3961 | memset(&cmd->Request.CDB[2], 0, 14); /* the rest of the CDB is reserved */ |
| 3962 | |
| 3963 | cmd->ErrorDescriptor.Addr.lower = paddr32 + sizeof(Command); |
| 3964 | cmd->ErrorDescriptor.Addr.upper = 0; |
| 3965 | cmd->ErrorDescriptor.Len = sizeof(ErrorInfo_struct); |
| 3966 | |
| 3967 | writel(paddr32, vaddr + SA5_REQUEST_PORT_OFFSET); |
| 3968 | |
| 3969 | for (i = 0; i < 10; i++) { |
| 3970 | tag = readl(vaddr + SA5_REPLY_PORT_OFFSET); |
| 3971 | if ((tag & ~3) == paddr32) |
| 3972 | break; |
| 3973 | schedule_timeout_uninterruptible(HZ); |
| 3974 | } |
| 3975 | |
| 3976 | iounmap(vaddr); |
| 3977 | |
| 3978 | /* we leak the DMA buffer here ... no choice since the controller could |
| 3979 | still complete the command. */ |
| 3980 | if (i == 10) { |
| 3981 | printk(KERN_ERR "cciss: controller message %02x:%02x timed out\n", |
| 3982 | opcode, type); |
| 3983 | return -ETIMEDOUT; |
| 3984 | } |
| 3985 | |
| 3986 | pci_free_consistent(pdev, cmd_sz, cmd, paddr64); |
| 3987 | |
| 3988 | if (tag & 2) { |
| 3989 | printk(KERN_ERR "cciss: controller message %02x:%02x failed\n", |
| 3990 | opcode, type); |
| 3991 | return -EIO; |
| 3992 | } |
| 3993 | |
| 3994 | printk(KERN_INFO "cciss: controller message %02x:%02x succeeded\n", |
| 3995 | opcode, type); |
| 3996 | return 0; |
| 3997 | } |
| 3998 | |
| 3999 | #define cciss_soft_reset_controller(p) cciss_message(p, 1, 0) |
| 4000 | #define cciss_noop(p) cciss_message(p, 3, 0) |
| 4001 | |
| 4002 | static __devinit int cciss_reset_msi(struct pci_dev *pdev) |
| 4003 | { |
| 4004 | /* the #defines are stolen from drivers/pci/msi.h. */ |
| 4005 | #define msi_control_reg(base) (base + PCI_MSI_FLAGS) |
| 4006 | #define PCI_MSIX_FLAGS_ENABLE (1 << 15) |
| 4007 | |
| 4008 | int pos; |
| 4009 | u16 control = 0; |
| 4010 | |
| 4011 | pos = pci_find_capability(pdev, PCI_CAP_ID_MSI); |
| 4012 | if (pos) { |
| 4013 | pci_read_config_word(pdev, msi_control_reg(pos), &control); |
| 4014 | if (control & PCI_MSI_FLAGS_ENABLE) { |
| 4015 | printk(KERN_INFO "cciss: resetting MSI\n"); |
| 4016 | pci_write_config_word(pdev, msi_control_reg(pos), control & ~PCI_MSI_FLAGS_ENABLE); |
| 4017 | } |
| 4018 | } |
| 4019 | |
| 4020 | pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX); |
| 4021 | if (pos) { |
| 4022 | pci_read_config_word(pdev, msi_control_reg(pos), &control); |
| 4023 | if (control & PCI_MSIX_FLAGS_ENABLE) { |
| 4024 | printk(KERN_INFO "cciss: resetting MSI-X\n"); |
| 4025 | pci_write_config_word(pdev, msi_control_reg(pos), control & ~PCI_MSIX_FLAGS_ENABLE); |
| 4026 | } |
| 4027 | } |
| 4028 | |
| 4029 | return 0; |
| 4030 | } |
| 4031 | |
| 4032 | /* This does a hard reset of the controller using PCI power management |
| 4033 | * states. */ |
| 4034 | static __devinit int cciss_hard_reset_controller(struct pci_dev *pdev) |
| 4035 | { |
| 4036 | u16 pmcsr, saved_config_space[32]; |
| 4037 | int i, pos; |
| 4038 | |
| 4039 | printk(KERN_INFO "cciss: using PCI PM to reset controller\n"); |
| 4040 | |
| 4041 | /* This is very nearly the same thing as |
| 4042 | |
| 4043 | pci_save_state(pci_dev); |
| 4044 | pci_set_power_state(pci_dev, PCI_D3hot); |
| 4045 | pci_set_power_state(pci_dev, PCI_D0); |
| 4046 | pci_restore_state(pci_dev); |
| 4047 | |
| 4048 | but we can't use these nice canned kernel routines on |
| 4049 | kexec, because they also check the MSI/MSI-X state in PCI |
| 4050 | configuration space and do the wrong thing when it is |
| 4051 | set/cleared. Also, the pci_save/restore_state functions |
| 4052 | violate the ordering requirements for restoring the |
| 4053 | configuration space from the CCISS document (see the |
| 4054 | comment below). So we roll our own .... */ |
| 4055 | |
| 4056 | for (i = 0; i < 32; i++) |
| 4057 | pci_read_config_word(pdev, 2*i, &saved_config_space[i]); |
| 4058 | |
| 4059 | pos = pci_find_capability(pdev, PCI_CAP_ID_PM); |
| 4060 | if (pos == 0) { |
| 4061 | printk(KERN_ERR "cciss_reset_controller: PCI PM not supported\n"); |
| 4062 | return -ENODEV; |
| 4063 | } |
| 4064 | |
| 4065 | /* Quoting from the Open CISS Specification: "The Power |
| 4066 | * Management Control/Status Register (CSR) controls the power |
| 4067 | * state of the device. The normal operating state is D0, |
| 4068 | * CSR=00h. The software off state is D3, CSR=03h. To reset |
| 4069 | * the controller, place the interface device in D3 then to |
| 4070 | * D0, this causes a secondary PCI reset which will reset the |
| 4071 | * controller." */ |
| 4072 | |
| 4073 | /* enter the D3hot power management state */ |
| 4074 | pci_read_config_word(pdev, pos + PCI_PM_CTRL, &pmcsr); |
| 4075 | pmcsr &= ~PCI_PM_CTRL_STATE_MASK; |
| 4076 | pmcsr |= PCI_D3hot; |
| 4077 | pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); |
| 4078 | |
| 4079 | schedule_timeout_uninterruptible(HZ >> 1); |
| 4080 | |
| 4081 | /* enter the D0 power management state */ |
| 4082 | pmcsr &= ~PCI_PM_CTRL_STATE_MASK; |
| 4083 | pmcsr |= PCI_D0; |
| 4084 | pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); |
| 4085 | |
| 4086 | schedule_timeout_uninterruptible(HZ >> 1); |
| 4087 | |
| 4088 | /* Restore the PCI configuration space. The Open CISS |
| 4089 | * Specification says, "Restore the PCI Configuration |
| 4090 | * Registers, offsets 00h through 60h. It is important to |
| 4091 | * restore the command register, 16-bits at offset 04h, |
| 4092 | * last. Do not restore the configuration status register, |
| 4093 | * 16-bits at offset 06h." Note that the offset is 2*i. */ |
| 4094 | for (i = 0; i < 32; i++) { |
| 4095 | if (i == 2 || i == 3) |
| 4096 | continue; |
| 4097 | pci_write_config_word(pdev, 2*i, saved_config_space[i]); |
| 4098 | } |
| 4099 | wmb(); |
| 4100 | pci_write_config_word(pdev, 4, saved_config_space[2]); |
| 4101 | |
| 4102 | return 0; |
| 4103 | } |
| 4104 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4105 | /* |
| 4106 | * This is it. Find all the controllers and register them. I really hate |
| 4107 | * stealing all these major device numbers. |
| 4108 | * returns the number of block devices registered. |
| 4109 | */ |
| 4110 | static int __devinit cciss_init_one(struct pci_dev *pdev, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4111 | const struct pci_device_id *ent) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4112 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4113 | int i; |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 4114 | int j = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4115 | int rc; |
Mike Miller | 22bece0 | 2008-11-06 12:53:25 -0800 | [diff] [blame] | 4116 | int dac, return_code; |
Eric Dumazet | 212a502 | 2009-08-24 10:01:53 +0200 | [diff] [blame] | 4117 | InquiryData_struct *inq_buff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4118 | |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4119 | if (reset_devices) { |
| 4120 | /* Reset the controller with a PCI power-cycle */ |
| 4121 | if (cciss_hard_reset_controller(pdev) || cciss_reset_msi(pdev)) |
| 4122 | return -ENODEV; |
| 4123 | |
Jens Axboe | 5e18cfd | 2009-02-27 08:10:26 +0100 | [diff] [blame] | 4124 | /* Now try to get the controller to respond to a no-op. Some |
| 4125 | devices (notably the HP Smart Array 5i Controller) need |
| 4126 | up to 30 seconds to respond. */ |
Jens Axboe | 5e4c91c | 2009-02-23 08:53:35 +0100 | [diff] [blame] | 4127 | for (i=0; i<30; i++) { |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4128 | if (cciss_noop(pdev) == 0) |
| 4129 | break; |
Jens Axboe | 5e4c91c | 2009-02-23 08:53:35 +0100 | [diff] [blame] | 4130 | |
| 4131 | schedule_timeout_uninterruptible(HZ); |
| 4132 | } |
| 4133 | if (i == 30) { |
| 4134 | printk(KERN_ERR "cciss: controller seems dead\n"); |
| 4135 | return -EBUSY; |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4136 | } |
| 4137 | } |
| 4138 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4139 | i = alloc_cciss_hba(); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4140 | if (i < 0) |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 4141 | return -1; |
Mike Miller | 1f8ef38 | 2005-09-13 01:25:21 -0700 | [diff] [blame] | 4142 | |
| 4143 | hba[i]->busy_initializing = 1; |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 4144 | INIT_HLIST_HEAD(&hba[i]->cmpQ); |
| 4145 | INIT_HLIST_HEAD(&hba[i]->reqQ); |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 4146 | mutex_init(&hba[i]->busy_shutting_down); |
Mike Miller | 1f8ef38 | 2005-09-13 01:25:21 -0700 | [diff] [blame] | 4147 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4148 | if (cciss_pci_init(hba[i], pdev) != 0) |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4149 | goto clean0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4150 | |
| 4151 | sprintf(hba[i]->devname, "cciss%d", i); |
| 4152 | hba[i]->ctlr = i; |
| 4153 | hba[i]->pdev = pdev; |
| 4154 | |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 4155 | init_completion(&hba[i]->scan_wait); |
| 4156 | |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4157 | if (cciss_create_hba_sysfs_entry(hba[i])) |
| 4158 | goto clean0; |
| 4159 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4160 | /* configure PCI DMA stuff */ |
Yang Hongyang | 6a35528 | 2009-04-06 19:01:13 -0700 | [diff] [blame] | 4161 | if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) |
Bjorn Helgaas | 40aabb5 | 2006-06-25 05:49:03 -0700 | [diff] [blame] | 4162 | dac = 1; |
Yang Hongyang | 284901a | 2009-04-06 19:01:15 -0700 | [diff] [blame] | 4163 | else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) |
Bjorn Helgaas | 40aabb5 | 2006-06-25 05:49:03 -0700 | [diff] [blame] | 4164 | dac = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4165 | else { |
Bjorn Helgaas | 40aabb5 | 2006-06-25 05:49:03 -0700 | [diff] [blame] | 4166 | printk(KERN_ERR "cciss: no suitable DMA available\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4167 | goto clean1; |
| 4168 | } |
| 4169 | |
| 4170 | /* |
| 4171 | * register with the major number, or get a dynamic major number |
| 4172 | * by passing 0 as argument. This is done for greater than |
| 4173 | * 8 controller support. |
| 4174 | */ |
| 4175 | if (i < MAX_CTLR_ORIG) |
Christoph Hellwig | 564de74 | 2006-01-08 01:05:17 -0800 | [diff] [blame] | 4176 | hba[i]->major = COMPAQ_CISS_MAJOR + i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4177 | rc = register_blkdev(hba[i]->major, hba[i]->devname); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4178 | if (rc == -EBUSY || rc == -EINVAL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4179 | printk(KERN_ERR |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4180 | "cciss: Unable to get major number %d for %s " |
| 4181 | "on hba %d\n", hba[i]->major, hba[i]->devname, i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4182 | goto clean1; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4183 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4184 | if (i >= MAX_CTLR_ORIG) |
| 4185 | hba[i]->major = rc; |
| 4186 | } |
| 4187 | |
| 4188 | /* make sure the board interrupts are off */ |
| 4189 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4190 | if (request_irq(hba[i]->intr[SIMPLE_MODE_INT], do_cciss_intr, |
Thomas Gleixner | 69ab391 | 2006-07-01 19:29:32 -0700 | [diff] [blame] | 4191 | IRQF_DISABLED | IRQF_SHARED, hba[i]->devname, hba[i])) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4192 | printk(KERN_ERR "cciss: Unable to get irq %d for %s\n", |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4193 | hba[i]->intr[SIMPLE_MODE_INT], hba[i]->devname); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4194 | goto clean2; |
| 4195 | } |
Bjorn Helgaas | 40aabb5 | 2006-06-25 05:49:03 -0700 | [diff] [blame] | 4196 | |
| 4197 | 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] | 4198 | hba[i]->devname, pdev->device, pci_name(pdev), |
| 4199 | hba[i]->intr[SIMPLE_MODE_INT], dac ? "" : " not"); |
Bjorn Helgaas | 40aabb5 | 2006-06-25 05:49:03 -0700 | [diff] [blame] | 4200 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4201 | hba[i]->cmd_pool_bits = |
Julia Lawall | 061837b | 2008-09-22 14:57:16 -0700 | [diff] [blame] | 4202 | kmalloc(DIV_ROUND_UP(hba[i]->nr_cmds, BITS_PER_LONG) |
| 4203 | * sizeof(unsigned long), GFP_KERNEL); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4204 | hba[i]->cmd_pool = (CommandList_struct *) |
| 4205 | pci_alloc_consistent(hba[i]->pdev, |
Mike Miller | f880632 | 2006-12-06 20:35:01 -0800 | [diff] [blame] | 4206 | hba[i]->nr_cmds * sizeof(CommandList_struct), |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4207 | &(hba[i]->cmd_pool_dhandle)); |
| 4208 | hba[i]->errinfo_pool = (ErrorInfo_struct *) |
| 4209 | pci_alloc_consistent(hba[i]->pdev, |
Mike Miller | f880632 | 2006-12-06 20:35:01 -0800 | [diff] [blame] | 4210 | hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4211 | &(hba[i]->errinfo_pool_dhandle)); |
| 4212 | if ((hba[i]->cmd_pool_bits == NULL) |
| 4213 | || (hba[i]->cmd_pool == NULL) |
| 4214 | || (hba[i]->errinfo_pool == NULL)) { |
| 4215 | printk(KERN_ERR "cciss: out of memory"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4216 | goto clean4; |
| 4217 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4218 | spin_lock_init(&hba[i]->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4219 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4220 | /* Initialize the pdev driver private data. |
| 4221 | have it point to hba[i]. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4222 | pci_set_drvdata(pdev, hba[i]); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4223 | /* command and error info recs zeroed out before |
| 4224 | they are used */ |
| 4225 | memset(hba[i]->cmd_pool_bits, 0, |
Julia Lawall | 061837b | 2008-09-22 14:57:16 -0700 | [diff] [blame] | 4226 | DIV_ROUND_UP(hba[i]->nr_cmds, BITS_PER_LONG) |
| 4227 | * sizeof(unsigned long)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4228 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 4229 | hba[i]->num_luns = 0; |
| 4230 | hba[i]->highest_lun = -1; |
| 4231 | for (j = 0; j < CISS_MAX_LUN; j++) { |
| 4232 | hba[i]->drv[j].raid_level = -1; |
| 4233 | hba[i]->drv[j].queue = NULL; |
| 4234 | hba[i]->gendisk[j] = NULL; |
| 4235 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4236 | |
| 4237 | cciss_scsi_setup(i); |
| 4238 | |
| 4239 | /* Turn the interrupts on so we can service requests */ |
| 4240 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON); |
| 4241 | |
Mike Miller | 22bece0 | 2008-11-06 12:53:25 -0800 | [diff] [blame] | 4242 | /* Get the firmware version */ |
| 4243 | inq_buff = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
| 4244 | if (inq_buff == NULL) { |
| 4245 | printk(KERN_ERR "cciss: out of memory\n"); |
| 4246 | goto clean4; |
| 4247 | } |
| 4248 | |
| 4249 | return_code = sendcmd_withirq(CISS_INQUIRY, i, inq_buff, |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 4250 | sizeof(InquiryData_struct), 0, CTLR_LUNID, TYPE_CMD); |
Mike Miller | 22bece0 | 2008-11-06 12:53:25 -0800 | [diff] [blame] | 4251 | if (return_code == IO_OK) { |
| 4252 | hba[i]->firm_ver[0] = inq_buff->data_byte[32]; |
| 4253 | hba[i]->firm_ver[1] = inq_buff->data_byte[33]; |
| 4254 | hba[i]->firm_ver[2] = inq_buff->data_byte[34]; |
| 4255 | hba[i]->firm_ver[3] = inq_buff->data_byte[35]; |
| 4256 | } else { /* send command failed */ |
| 4257 | printk(KERN_WARNING "cciss: unable to determine firmware" |
| 4258 | " version of controller\n"); |
| 4259 | } |
Eric Dumazet | 212a502 | 2009-08-24 10:01:53 +0200 | [diff] [blame] | 4260 | kfree(inq_buff); |
Mike Miller | 22bece0 | 2008-11-06 12:53:25 -0800 | [diff] [blame] | 4261 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4262 | cciss_procinit(i); |
Mike Miller | 92c4231a | 2006-12-06 20:35:06 -0800 | [diff] [blame] | 4263 | |
| 4264 | hba[i]->cciss_max_sectors = 2048; |
| 4265 | |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 4266 | rebuild_lun_table(hba[i], 1, 0); |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 4267 | hba[i]->busy_initializing = 0; |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 4268 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4269 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 4270 | clean4: |
Jesper Juhl | 6044ec8 | 2005-11-07 01:01:32 -0800 | [diff] [blame] | 4271 | kfree(hba[i]->cmd_pool_bits); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4272 | if (hba[i]->cmd_pool) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4273 | pci_free_consistent(hba[i]->pdev, |
Mike Miller | f880632 | 2006-12-06 20:35:01 -0800 | [diff] [blame] | 4274 | hba[i]->nr_cmds * sizeof(CommandList_struct), |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4275 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); |
| 4276 | if (hba[i]->errinfo_pool) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4277 | pci_free_consistent(hba[i]->pdev, |
Mike Miller | f880632 | 2006-12-06 20:35:01 -0800 | [diff] [blame] | 4278 | hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4279 | hba[i]->errinfo_pool, |
| 4280 | hba[i]->errinfo_pool_dhandle); |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 4281 | free_irq(hba[i]->intr[SIMPLE_MODE_INT], hba[i]); |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 4282 | clean2: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4283 | unregister_blkdev(hba[i]->major, hba[i]->devname); |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 4284 | clean1: |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4285 | cciss_destroy_hba_sysfs_entry(hba[i]); |
| 4286 | clean0: |
Mike Miller | 1f8ef38 | 2005-09-13 01:25:21 -0700 | [diff] [blame] | 4287 | hba[i]->busy_initializing = 0; |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 4288 | /* cleanup any queues that may have been initialized */ |
| 4289 | for (j=0; j <= hba[i]->highest_lun; j++){ |
| 4290 | drive_info_struct *drv = &(hba[i]->drv[j]); |
| 4291 | if (drv->queue) |
| 4292 | blk_cleanup_queue(drv->queue); |
| 4293 | } |
Mike Miller | 872225c | 2006-12-13 00:34:22 -0800 | [diff] [blame] | 4294 | /* |
| 4295 | * Deliberately omit pci_disable_device(): it does something nasty to |
| 4296 | * Smart Array controllers that pci_enable_device does not undo |
| 4297 | */ |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 4298 | pci_release_regions(pdev); |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 4299 | pci_set_drvdata(pdev, NULL); |
Patrick McHardy | 61808c2 | 2006-03-23 02:59:24 -0800 | [diff] [blame] | 4300 | free_hba(i); |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 4301 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4302 | } |
| 4303 | |
Gerald Britton | e9ca75b | 2007-05-14 13:53:01 -0400 | [diff] [blame] | 4304 | static void cciss_shutdown(struct pci_dev *pdev) |
| 4305 | { |
| 4306 | ctlr_info_t *tmp_ptr; |
| 4307 | int i; |
| 4308 | char flush_buf[4]; |
| 4309 | int return_code; |
| 4310 | |
| 4311 | tmp_ptr = pci_get_drvdata(pdev); |
| 4312 | if (tmp_ptr == NULL) |
| 4313 | return; |
| 4314 | i = tmp_ptr->ctlr; |
| 4315 | if (hba[i] == NULL) |
| 4316 | return; |
| 4317 | |
| 4318 | /* Turn board interrupts off and send the flush cache command */ |
| 4319 | /* sendcmd will turn off interrupt, and send the flush... |
| 4320 | * To write all data in the battery backed cache to disks */ |
| 4321 | memset(flush_buf, 0, 4); |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 4322 | return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, |
| 4323 | CTLR_LUNID, TYPE_CMD); |
Gerald Britton | e9ca75b | 2007-05-14 13:53:01 -0400 | [diff] [blame] | 4324 | if (return_code == IO_OK) { |
| 4325 | printk(KERN_INFO "Completed flushing cache on controller %d\n", i); |
| 4326 | } else { |
| 4327 | printk(KERN_WARNING "Error flushing cache on controller %d\n", i); |
| 4328 | } |
| 4329 | free_irq(hba[i]->intr[2], hba[i]); |
| 4330 | } |
| 4331 | |
| 4332 | static void __devexit cciss_remove_one(struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4333 | { |
| 4334 | ctlr_info_t *tmp_ptr; |
| 4335 | int i, j; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4336 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4337 | if (pci_get_drvdata(pdev) == NULL) { |
| 4338 | printk(KERN_ERR "cciss: Unable to remove device \n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4339 | return; |
| 4340 | } |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 4341 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4342 | tmp_ptr = pci_get_drvdata(pdev); |
| 4343 | i = tmp_ptr->ctlr; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4344 | if (hba[i] == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4345 | printk(KERN_ERR "cciss: device appears to " |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4346 | "already be removed \n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4347 | return; |
| 4348 | } |
Bjorn Helgaas | b655077 | 2007-04-11 23:28:43 -0700 | [diff] [blame] | 4349 | |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 4350 | mutex_lock(&hba[i]->busy_shutting_down); |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 4351 | |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 4352 | remove_from_scan_list(hba[i]); |
Bjorn Helgaas | b655077 | 2007-04-11 23:28:43 -0700 | [diff] [blame] | 4353 | remove_proc_entry(hba[i]->devname, proc_cciss); |
| 4354 | unregister_blkdev(hba[i]->major, hba[i]->devname); |
| 4355 | |
| 4356 | /* remove it from the disk list */ |
| 4357 | for (j = 0; j < CISS_MAX_LUN; j++) { |
| 4358 | struct gendisk *disk = hba[i]->gendisk[j]; |
| 4359 | if (disk) { |
Jens Axboe | 165125e | 2007-07-24 09:28:11 +0200 | [diff] [blame] | 4360 | struct request_queue *q = disk->queue; |
Bjorn Helgaas | b655077 | 2007-04-11 23:28:43 -0700 | [diff] [blame] | 4361 | |
Stephen M. Cameron | 097d026 | 2009-09-17 13:47:19 -0500 | [diff] [blame] | 4362 | if (disk->flags & GENHD_FL_UP) { |
Stephen M. Cameron | 8ce5196 | 2009-09-17 13:47:34 -0500 | [diff] [blame] | 4363 | cciss_destroy_ld_sysfs_entry(hba[i], j, 1); |
Bjorn Helgaas | b655077 | 2007-04-11 23:28:43 -0700 | [diff] [blame] | 4364 | del_gendisk(disk); |
Stephen M. Cameron | 097d026 | 2009-09-17 13:47:19 -0500 | [diff] [blame] | 4365 | } |
Bjorn Helgaas | b655077 | 2007-04-11 23:28:43 -0700 | [diff] [blame] | 4366 | if (q) |
| 4367 | blk_cleanup_queue(q); |
| 4368 | } |
| 4369 | } |
| 4370 | |
Mike Miller | ba198ef | 2008-08-04 11:54:55 +0200 | [diff] [blame] | 4371 | #ifdef CONFIG_CISS_SCSI_TAPE |
Bjorn Helgaas | b655077 | 2007-04-11 23:28:43 -0700 | [diff] [blame] | 4372 | cciss_unregister_scsi(i); /* unhook from SCSI subsystem */ |
Mike Miller | ba198ef | 2008-08-04 11:54:55 +0200 | [diff] [blame] | 4373 | #endif |
Bjorn Helgaas | b655077 | 2007-04-11 23:28:43 -0700 | [diff] [blame] | 4374 | |
Gerald Britton | e9ca75b | 2007-05-14 13:53:01 -0400 | [diff] [blame] | 4375 | cciss_shutdown(pdev); |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 4376 | |
| 4377 | #ifdef CONFIG_PCI_MSI |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4378 | if (hba[i]->msix_vector) |
| 4379 | pci_disable_msix(hba[i]->pdev); |
| 4380 | else if (hba[i]->msi_vector) |
| 4381 | pci_disable_msi(hba[i]->pdev); |
| 4382 | #endif /* CONFIG_PCI_MSI */ |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 4383 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4384 | iounmap(hba[i]->vaddr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4385 | |
Mike Miller | f880632 | 2006-12-06 20:35:01 -0800 | [diff] [blame] | 4386 | 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] | 4387 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); |
Mike Miller | f880632 | 2006-12-06 20:35:01 -0800 | [diff] [blame] | 4388 | 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] | 4389 | hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4390 | kfree(hba[i]->cmd_pool_bits); |
Mike Miller | 872225c | 2006-12-13 00:34:22 -0800 | [diff] [blame] | 4391 | /* |
| 4392 | * Deliberately omit pci_disable_device(): it does something nasty to |
| 4393 | * Smart Array controllers that pci_enable_device does not undo |
| 4394 | */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4395 | pci_release_regions(pdev); |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 4396 | pci_set_drvdata(pdev, NULL); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4397 | cciss_destroy_hba_sysfs_entry(hba[i]); |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 4398 | mutex_unlock(&hba[i]->busy_shutting_down); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4399 | free_hba(i); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4400 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4401 | |
| 4402 | static struct pci_driver cciss_pci_driver = { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4403 | .name = "cciss", |
| 4404 | .probe = cciss_init_one, |
| 4405 | .remove = __devexit_p(cciss_remove_one), |
| 4406 | .id_table = cciss_pci_device_id, /* id_table */ |
Gerald Britton | e9ca75b | 2007-05-14 13:53:01 -0400 | [diff] [blame] | 4407 | .shutdown = cciss_shutdown, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4408 | }; |
| 4409 | |
| 4410 | /* |
| 4411 | * 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] | 4412 | * 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] | 4413 | */ |
| 4414 | static int __init cciss_init(void) |
| 4415 | { |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4416 | int err; |
| 4417 | |
Jens Axboe | 10cbda9 | 2009-02-27 20:14:20 +0100 | [diff] [blame] | 4418 | /* |
| 4419 | * The hardware requires that commands are aligned on a 64-bit |
| 4420 | * boundary. Given that we use pci_alloc_consistent() to allocate an |
| 4421 | * array of them, the size must be a multiple of 8 bytes. |
| 4422 | */ |
| 4423 | BUILD_BUG_ON(sizeof(CommandList_struct) % 8); |
| 4424 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4425 | printk(KERN_INFO DRIVER_NAME "\n"); |
| 4426 | |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4427 | err = bus_register(&cciss_bus_type); |
| 4428 | if (err) |
| 4429 | return err; |
| 4430 | |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 4431 | /* Start the scan thread */ |
| 4432 | cciss_scan_thread = kthread_run(scan_thread, NULL, "cciss_scan"); |
| 4433 | if (IS_ERR(cciss_scan_thread)) { |
| 4434 | err = PTR_ERR(cciss_scan_thread); |
| 4435 | goto err_bus_unregister; |
| 4436 | } |
| 4437 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4438 | /* Register for our PCI devices */ |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4439 | err = pci_register_driver(&cciss_pci_driver); |
| 4440 | if (err) |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 4441 | goto err_thread_stop; |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4442 | |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 4443 | return err; |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4444 | |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 4445 | err_thread_stop: |
| 4446 | kthread_stop(cciss_scan_thread); |
| 4447 | err_bus_unregister: |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4448 | bus_unregister(&cciss_bus_type); |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 4449 | |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4450 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4451 | } |
| 4452 | |
| 4453 | static void __exit cciss_cleanup(void) |
| 4454 | { |
| 4455 | int i; |
| 4456 | |
| 4457 | pci_unregister_driver(&cciss_pci_driver); |
| 4458 | /* double check that all controller entrys have been removed */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4459 | for (i = 0; i < MAX_CTLR; i++) { |
| 4460 | if (hba[i] != NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4461 | printk(KERN_WARNING "cciss: had to remove" |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4462 | " controller %d\n", i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4463 | cciss_remove_one(hba[i]->pdev); |
| 4464 | } |
| 4465 | } |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 4466 | kthread_stop(cciss_scan_thread); |
Alexey Dobriyan | 928b4d8 | 2008-04-29 01:01:44 -0700 | [diff] [blame] | 4467 | remove_proc_entry("driver/cciss", NULL); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4468 | bus_unregister(&cciss_bus_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4469 | } |
| 4470 | |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 4471 | static void fail_all_cmds(unsigned long ctlr) |
| 4472 | { |
| 4473 | /* If we get here, the board is apparently dead. */ |
| 4474 | ctlr_info_t *h = hba[ctlr]; |
| 4475 | CommandList_struct *c; |
| 4476 | unsigned long flags; |
| 4477 | |
| 4478 | printk(KERN_WARNING "cciss%d: controller not responding.\n", h->ctlr); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4479 | h->alive = 0; /* the controller apparently died... */ |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 4480 | |
| 4481 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); |
| 4482 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4483 | pci_disable_device(h->pdev); /* Make sure it is really dead. */ |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 4484 | |
| 4485 | /* move everything off the request queue onto the completed queue */ |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 4486 | while (!hlist_empty(&h->reqQ)) { |
| 4487 | c = hlist_entry(h->reqQ.first, CommandList_struct, list); |
| 4488 | removeQ(c); |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 4489 | h->Qdepth--; |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 4490 | addQ(&h->cmpQ, c); |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 4491 | } |
| 4492 | |
| 4493 | /* Now, fail everything on the completed queue with a HW error */ |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 4494 | while (!hlist_empty(&h->cmpQ)) { |
| 4495 | c = hlist_entry(h->cmpQ.first, CommandList_struct, list); |
| 4496 | removeQ(c); |
Hannes Reinecke | b59e64d | 2009-07-02 22:02:06 +0200 | [diff] [blame] | 4497 | if (c->cmd_type != CMD_MSG_STALE) |
| 4498 | c->err_info->CommandStatus = CMD_HARDWARE_ERR; |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 4499 | if (c->cmd_type == CMD_RWREQ) { |
| 4500 | complete_command(h, c, 0); |
| 4501 | } else if (c->cmd_type == CMD_IOCTL_PEND) |
| 4502 | complete(c->waiting); |
| 4503 | #ifdef CONFIG_CISS_SCSI_TAPE |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4504 | else if (c->cmd_type == CMD_SCSI) |
| 4505 | complete_scsi_command(c, 0, 0); |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 4506 | #endif |
| 4507 | } |
| 4508 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
| 4509 | return; |
| 4510 | } |
| 4511 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4512 | module_init(cciss_init); |
| 4513 | module_exit(cciss_cleanup); |