Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Disk Array driver for HP SA 5xxx and 6xxx Controllers |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3 | * Copyright 2000, 2006 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 |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or |
| 13 | * NON INFRINGEMENT. See the GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 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> |
| 29 | #include <linux/delay.h> |
| 30 | #include <linux/major.h> |
| 31 | #include <linux/fs.h> |
| 32 | #include <linux/bio.h> |
| 33 | #include <linux/blkpg.h> |
| 34 | #include <linux/timer.h> |
| 35 | #include <linux/proc_fs.h> |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 36 | #include <linux/init.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | #include <linux/hdreg.h> |
| 38 | #include <linux/spinlock.h> |
| 39 | #include <linux/compat.h> |
Jens Axboe | 2056a78 | 2006-03-23 20:00:26 +0100 | [diff] [blame] | 40 | #include <linux/blktrace_api.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | #include <asm/uaccess.h> |
| 42 | #include <asm/io.h> |
| 43 | |
mike.miller@hp.com | eb0df99 | 2005-06-10 14:51:04 -0500 | [diff] [blame] | 44 | #include <linux/dma-mapping.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | #include <linux/blkdev.h> |
| 46 | #include <linux/genhd.h> |
| 47 | #include <linux/completion.h> |
| 48 | |
| 49 | #define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin)) |
Mike Miller | 9d827c9 | 2006-12-06 20:34:58 -0800 | [diff] [blame^] | 50 | #define DRIVER_NAME "HP CISS Driver (v 3.6.14)" |
| 51 | #define DRIVER_VERSION CCISS_DRIVER_VERSION(3,6,14) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | |
| 53 | /* Embedded module documentation macros - see modules.h */ |
| 54 | MODULE_AUTHOR("Hewlett-Packard Company"); |
Mike Miller | 9d827c9 | 2006-12-06 20:34:58 -0800 | [diff] [blame^] | 55 | MODULE_DESCRIPTION("Driver for HP Controller SA5xxx SA6xxx version 3.6.14"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | MODULE_SUPPORTED_DEVICE("HP SA5i SA5i+ SA532 SA5300 SA5312 SA641 SA642 SA6400" |
Mike Miller | 1883c5a | 2006-09-12 20:36:07 -0700 | [diff] [blame] | 57 | " SA6i P600 P800 P400 P400i E200 E200i E500"); |
Mike Miller | 9d827c9 | 2006-12-06 20:34:58 -0800 | [diff] [blame^] | 58 | MODULE_VERSION("3.6.14"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | MODULE_LICENSE("GPL"); |
| 60 | |
| 61 | #include "cciss_cmd.h" |
| 62 | #include "cciss.h" |
| 63 | #include <linux/cciss_ioctl.h> |
| 64 | |
| 65 | /* define the PCI info for the cards we can control */ |
| 66 | static const struct pci_device_id cciss_pci_device_id[] = { |
Bjorn Helgaas | f82ccdb | 2006-06-25 05:49:07 -0700 | [diff] [blame] | 67 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISS, 0x0E11, 0x4070}, |
| 68 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4080}, |
| 69 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4082}, |
| 70 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4083}, |
| 71 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x4091}, |
| 72 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409A}, |
| 73 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409B}, |
| 74 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409C}, |
| 75 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409D}, |
| 76 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSA, 0x103C, 0x3225}, |
| 77 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3223}, |
| 78 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3234}, |
| 79 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3235}, |
| 80 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3211}, |
| 81 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3212}, |
| 82 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3213}, |
| 83 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3214}, |
| 84 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3215}, |
Mike Miller | 1883c5a | 2006-09-12 20:36:07 -0700 | [diff] [blame] | 85 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3233}, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | {0,} |
| 87 | }; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 88 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | MODULE_DEVICE_TABLE(pci, cciss_pci_device_id); |
| 90 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | /* board_id = Subsystem Device ID & Vendor ID |
| 92 | * product = Marketing Name for the board |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 93 | * access = Address of the struct of function pointers |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | */ |
| 95 | static struct board_type products[] = { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 96 | {0x40700E11, "Smart Array 5300", &SA5_access}, |
| 97 | {0x40800E11, "Smart Array 5i", &SA5B_access}, |
| 98 | {0x40820E11, "Smart Array 532", &SA5B_access}, |
| 99 | {0x40830E11, "Smart Array 5312", &SA5B_access}, |
| 100 | {0x409A0E11, "Smart Array 641", &SA5_access}, |
| 101 | {0x409B0E11, "Smart Array 642", &SA5_access}, |
| 102 | {0x409C0E11, "Smart Array 6400", &SA5_access}, |
| 103 | {0x409D0E11, "Smart Array 6400 EM", &SA5_access}, |
| 104 | {0x40910E11, "Smart Array 6i", &SA5_access}, |
| 105 | {0x3225103C, "Smart Array P600", &SA5_access}, |
| 106 | {0x3223103C, "Smart Array P800", &SA5_access}, |
| 107 | {0x3234103C, "Smart Array P400", &SA5_access}, |
| 108 | {0x3235103C, "Smart Array P400i", &SA5_access}, |
| 109 | {0x3211103C, "Smart Array E200i", &SA5_access}, |
| 110 | {0x3212103C, "Smart Array E200", &SA5_access}, |
| 111 | {0x3213103C, "Smart Array E200i", &SA5_access}, |
| 112 | {0x3214103C, "Smart Array E200i", &SA5_access}, |
| 113 | {0x3215103C, "Smart Array E200i", &SA5_access}, |
Mike Miller | 1883c5a | 2006-09-12 20:36:07 -0700 | [diff] [blame] | 114 | {0x3233103C, "Smart Array E500", &SA5_access}, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | }; |
| 116 | |
Bjorn Helgaas | d14c4ab | 2006-06-25 05:49:04 -0700 | [diff] [blame] | 117 | /* 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] | 118 | #define MAX_CONFIG_WAIT 30000 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | #define MAX_IOCTL_CONFIG_WAIT 1000 |
| 120 | |
| 121 | /*define how many times we will try a command because of bus resets */ |
| 122 | #define MAX_CMD_RETRIES 3 |
| 123 | |
| 124 | #define READ_AHEAD 1024 |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 125 | #define NR_CMDS 384 /* #commands that can be outstanding */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | #define MAX_CTLR 32 |
| 127 | |
| 128 | /* Originally cciss driver only supports 8 major numbers */ |
| 129 | #define MAX_CTLR_ORIG 8 |
| 130 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | static ctlr_info_t *hba[MAX_CTLR]; |
| 132 | |
| 133 | static void do_cciss_request(request_queue_t *q); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 134 | static irqreturn_t do_cciss_intr(int irq, void *dev_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | static int cciss_open(struct inode *inode, struct file *filep); |
| 136 | static int cciss_release(struct inode *inode, struct file *filep); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 137 | static int cciss_ioctl(struct inode *inode, struct file *filep, |
| 138 | unsigned int cmd, unsigned long arg); |
Christoph Hellwig | a885c8c | 2006-01-08 01:02:50 -0800 | [diff] [blame] | 139 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | |
| 141 | static int revalidate_allvol(ctlr_info_t *host); |
| 142 | static int cciss_revalidate(struct gendisk *disk); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 143 | static int rebuild_lun_table(ctlr_info_t *h, struct gendisk *del_disk); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 144 | static int deregister_disk(struct gendisk *disk, drive_info_struct *drv, |
| 145 | int clear_all); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 146 | |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 147 | static void cciss_read_capacity(int ctlr, int logvol, int withirq, |
| 148 | sector_t *total_size, unsigned int *block_size); |
| 149 | static void cciss_read_capacity_16(int ctlr, int logvol, int withirq, |
| 150 | sector_t *total_size, unsigned int *block_size); |
| 151 | static void cciss_geometry_inquiry(int ctlr, int logvol, |
| 152 | int withirq, sector_t total_size, |
| 153 | unsigned int block_size, InquiryData_struct *inq_buff, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 154 | drive_info_struct *drv); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | static void cciss_getgeometry(int cntl_num); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 156 | static void __devinit cciss_interrupt_mode(ctlr_info_t *, struct pci_dev *, |
| 157 | __u32); |
| 158 | static void start_io(ctlr_info_t *h); |
| 159 | static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size, |
| 160 | unsigned int use_unit_num, unsigned int log_unit, |
| 161 | __u8 page_code, unsigned char *scsi3addr, int cmd_type); |
| 162 | static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size, |
| 163 | unsigned int use_unit_num, unsigned int log_unit, |
| 164 | __u8 page_code, int cmd_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 166 | static void fail_all_cmds(unsigned long ctlr); |
| 167 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | #ifdef CONFIG_PROC_FS |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 169 | static int cciss_proc_get_info(char *buffer, char **start, off_t offset, |
| 170 | int length, int *eof, void *data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | static void cciss_procinit(int i); |
| 172 | #else |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 173 | static void cciss_procinit(int i) |
| 174 | { |
| 175 | } |
| 176 | #endif /* CONFIG_PROC_FS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | |
| 178 | #ifdef CONFIG_COMPAT |
| 179 | static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg); |
| 180 | #endif |
| 181 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 182 | static struct block_device_operations cciss_fops = { |
| 183 | .owner = THIS_MODULE, |
| 184 | .open = cciss_open, |
| 185 | .release = cciss_release, |
| 186 | .ioctl = cciss_ioctl, |
| 187 | .getgeo = cciss_getgeo, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | #ifdef CONFIG_COMPAT |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 189 | .compat_ioctl = cciss_compat_ioctl, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | #endif |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 191 | .revalidate_disk = cciss_revalidate, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | }; |
| 193 | |
| 194 | /* |
| 195 | * Enqueuing and dequeuing functions for cmdlists. |
| 196 | */ |
| 197 | static inline void addQ(CommandList_struct **Qptr, CommandList_struct *c) |
| 198 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 199 | if (*Qptr == NULL) { |
| 200 | *Qptr = c; |
| 201 | c->next = c->prev = c; |
| 202 | } else { |
| 203 | c->prev = (*Qptr)->prev; |
| 204 | c->next = (*Qptr); |
| 205 | (*Qptr)->prev->next = c; |
| 206 | (*Qptr)->prev = c; |
| 207 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | } |
| 209 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 210 | static inline CommandList_struct *removeQ(CommandList_struct **Qptr, |
| 211 | CommandList_struct *c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 213 | if (c && c->next != c) { |
| 214 | if (*Qptr == c) |
| 215 | *Qptr = c->next; |
| 216 | c->prev->next = c->next; |
| 217 | c->next->prev = c->prev; |
| 218 | } else { |
| 219 | *Qptr = NULL; |
| 220 | } |
| 221 | return c; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | } |
| 223 | |
| 224 | #include "cciss_scsi.c" /* For SCSI tape support */ |
| 225 | |
| 226 | #ifdef CONFIG_PROC_FS |
| 227 | |
| 228 | /* |
| 229 | * Report information about this controller. |
| 230 | */ |
| 231 | #define ENG_GIG 1000000000 |
| 232 | #define ENG_GIG_FACTOR (ENG_GIG/512) |
| 233 | #define RAID_UNKNOWN 6 |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 234 | static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG", |
| 235 | "UNKNOWN" |
| 236 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | |
| 238 | static struct proc_dir_entry *proc_cciss; |
| 239 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 240 | static int cciss_proc_get_info(char *buffer, char **start, off_t offset, |
| 241 | int length, int *eof, void *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 243 | off_t pos = 0; |
| 244 | off_t len = 0; |
| 245 | int size, i, ctlr; |
| 246 | ctlr_info_t *h = (ctlr_info_t *) data; |
| 247 | drive_info_struct *drv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | unsigned long flags; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 249 | sector_t vol_sz, vol_sz_frac; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 251 | ctlr = h->ctlr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | |
| 253 | /* prevent displaying bogus info during configuration |
| 254 | * or deconfiguration of a logical volume |
| 255 | */ |
| 256 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); |
| 257 | if (h->busy_configuring) { |
| 258 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 259 | return -EBUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | } |
| 261 | h->busy_configuring = 1; |
| 262 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
| 263 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 264 | size = sprintf(buffer, "%s: HP %s Controller\n" |
| 265 | "Board ID: 0x%08lx\n" |
| 266 | "Firmware Version: %c%c%c%c\n" |
| 267 | "IRQ: %d\n" |
| 268 | "Logical drives: %d\n" |
| 269 | "Current Q depth: %d\n" |
| 270 | "Current # commands on controller: %d\n" |
| 271 | "Max Q depth since init: %d\n" |
| 272 | "Max # commands on controller since init: %d\n" |
| 273 | "Max SG entries since init: %d\n\n", |
| 274 | h->devname, |
| 275 | h->product_name, |
| 276 | (unsigned long)h->board_id, |
| 277 | h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], |
| 278 | h->firm_ver[3], (unsigned int)h->intr[SIMPLE_MODE_INT], |
| 279 | h->num_luns, h->Qdepth, h->commands_outstanding, |
| 280 | h->maxQsinceinit, h->max_outstanding, h->maxSG); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 282 | pos += size; |
| 283 | len += size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | cciss_proc_tape_report(ctlr, buffer, &pos, &len); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 285 | for (i = 0; i <= h->highest_lun; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 287 | drv = &h->drv[i]; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 288 | if (drv->heads == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | continue; |
| 290 | |
| 291 | vol_sz = drv->nr_blocks; |
| 292 | vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR); |
| 293 | vol_sz_frac *= 100; |
| 294 | sector_div(vol_sz_frac, ENG_GIG_FACTOR); |
| 295 | |
| 296 | if (drv->raid_level > 5) |
| 297 | drv->raid_level = RAID_UNKNOWN; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 298 | size = sprintf(buffer + len, "cciss/c%dd%d:" |
| 299 | "\t%4u.%02uGB\tRAID %s\n", |
| 300 | ctlr, i, (int)vol_sz, (int)vol_sz_frac, |
| 301 | raid_label[drv->raid_level]); |
| 302 | pos += size; |
| 303 | len += size; |
| 304 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 306 | *eof = 1; |
| 307 | *start = buffer + offset; |
| 308 | len -= offset; |
| 309 | if (len > length) |
| 310 | len = length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 311 | h->busy_configuring = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 312 | return len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 313 | } |
| 314 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 315 | static int |
| 316 | cciss_proc_write(struct file *file, const char __user *buffer, |
| 317 | unsigned long count, void *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | { |
| 319 | unsigned char cmd[80]; |
| 320 | int len; |
| 321 | #ifdef CONFIG_CISS_SCSI_TAPE |
| 322 | ctlr_info_t *h = (ctlr_info_t *) data; |
| 323 | int rc; |
| 324 | #endif |
| 325 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 326 | if (count > sizeof(cmd) - 1) |
| 327 | return -EINVAL; |
| 328 | if (copy_from_user(cmd, buffer, count)) |
| 329 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | cmd[count] = '\0'; |
| 331 | len = strlen(cmd); // above 3 lines ensure safety |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 332 | if (len && cmd[len - 1] == '\n') |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | cmd[--len] = '\0'; |
| 334 | # ifdef CONFIG_CISS_SCSI_TAPE |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 335 | if (strcmp("engage scsi", cmd) == 0) { |
| 336 | rc = cciss_engage_scsi(h->ctlr); |
| 337 | if (rc != 0) |
| 338 | return -rc; |
| 339 | return count; |
| 340 | } |
| 341 | /* might be nice to have "disengage" too, but it's not |
| 342 | safely possible. (only 1 module use count, lock issues.) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | # endif |
| 344 | return -EINVAL; |
| 345 | } |
| 346 | |
| 347 | /* |
| 348 | * Get us a file in /proc/cciss that says something about each controller. |
| 349 | * Create /proc/cciss if it doesn't exist yet. |
| 350 | */ |
| 351 | static void __devinit cciss_procinit(int i) |
| 352 | { |
| 353 | struct proc_dir_entry *pde; |
| 354 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 355 | if (proc_cciss == NULL) { |
| 356 | proc_cciss = proc_mkdir("cciss", proc_root_driver); |
| 357 | if (!proc_cciss) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | return; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 359 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 361 | pde = create_proc_read_entry(hba[i]->devname, |
| 362 | S_IWUSR | S_IRUSR | S_IRGRP | S_IROTH, |
| 363 | proc_cciss, cciss_proc_get_info, hba[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | pde->write_proc = cciss_proc_write; |
| 365 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 366 | #endif /* CONFIG_PROC_FS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 368 | /* |
| 369 | * For operations that cannot sleep, a command block is allocated at init, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | * 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] | 371 | * which ones are free or in use. For operations that can wait for kmalloc |
| 372 | * to possible sleep, this routine can be called with get_from_pool set to 0. |
| 373 | * cmd_free() MUST be called with a got_from_pool set to 0 if cmd_alloc was. |
| 374 | */ |
| 375 | 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] | 376 | { |
| 377 | CommandList_struct *c; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 378 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | u64bit temp64; |
| 380 | dma_addr_t cmd_dma_handle, err_dma_handle; |
| 381 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 382 | if (!get_from_pool) { |
| 383 | c = (CommandList_struct *) pci_alloc_consistent(h->pdev, |
| 384 | sizeof(CommandList_struct), &cmd_dma_handle); |
| 385 | if (c == NULL) |
| 386 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | memset(c, 0, sizeof(CommandList_struct)); |
| 388 | |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 389 | c->cmdindex = -1; |
| 390 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 391 | c->err_info = (ErrorInfo_struct *) |
| 392 | pci_alloc_consistent(h->pdev, sizeof(ErrorInfo_struct), |
| 393 | &err_dma_handle); |
| 394 | |
| 395 | if (c->err_info == NULL) { |
| 396 | pci_free_consistent(h->pdev, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | sizeof(CommandList_struct), c, cmd_dma_handle); |
| 398 | return NULL; |
| 399 | } |
| 400 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 401 | } else { /* get it out of the controllers pool */ |
| 402 | |
| 403 | do { |
| 404 | i = find_first_zero_bit(h->cmd_pool_bits, NR_CMDS); |
| 405 | if (i == NR_CMDS) |
| 406 | return NULL; |
| 407 | } while (test_and_set_bit |
| 408 | (i & (BITS_PER_LONG - 1), |
| 409 | h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | #ifdef CCISS_DEBUG |
| 411 | printk(KERN_DEBUG "cciss: using command buffer %d\n", i); |
| 412 | #endif |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 413 | c = h->cmd_pool + i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | memset(c, 0, sizeof(CommandList_struct)); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 415 | cmd_dma_handle = h->cmd_pool_dhandle |
| 416 | + i * sizeof(CommandList_struct); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | c->err_info = h->errinfo_pool + i; |
| 418 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 419 | err_dma_handle = h->errinfo_pool_dhandle |
| 420 | + i * sizeof(ErrorInfo_struct); |
| 421 | h->nr_allocs++; |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 422 | |
| 423 | c->cmdindex = i; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 424 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | |
| 426 | c->busaddr = (__u32) cmd_dma_handle; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 427 | temp64.val = (__u64) err_dma_handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | c->ErrDesc.Addr.lower = temp64.val32.lower; |
| 429 | c->ErrDesc.Addr.upper = temp64.val32.upper; |
| 430 | c->ErrDesc.Len = sizeof(ErrorInfo_struct); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 431 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 432 | c->ctlr = h->ctlr; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 433 | return c; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | } |
| 435 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 436 | /* |
| 437 | * Frees a command block that was previously allocated with cmd_alloc(). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | */ |
| 439 | static void cmd_free(ctlr_info_t *h, CommandList_struct *c, int got_from_pool) |
| 440 | { |
| 441 | int i; |
| 442 | u64bit temp64; |
| 443 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 444 | if (!got_from_pool) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | temp64.val32.lower = c->ErrDesc.Addr.lower; |
| 446 | temp64.val32.upper = c->ErrDesc.Addr.upper; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 447 | pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct), |
| 448 | c->err_info, (dma_addr_t) temp64.val); |
| 449 | pci_free_consistent(h->pdev, sizeof(CommandList_struct), |
| 450 | c, (dma_addr_t) c->busaddr); |
| 451 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 452 | i = c - h->cmd_pool; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 453 | clear_bit(i & (BITS_PER_LONG - 1), |
| 454 | h->cmd_pool_bits + (i / BITS_PER_LONG)); |
| 455 | h->nr_frees++; |
| 456 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | } |
| 458 | |
| 459 | static inline ctlr_info_t *get_host(struct gendisk *disk) |
| 460 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 461 | return disk->queue->queuedata; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | } |
| 463 | |
| 464 | static inline drive_info_struct *get_drv(struct gendisk *disk) |
| 465 | { |
| 466 | return disk->private_data; |
| 467 | } |
| 468 | |
| 469 | /* |
| 470 | * Open. Make sure the device is really there. |
| 471 | */ |
| 472 | static int cciss_open(struct inode *inode, struct file *filep) |
| 473 | { |
| 474 | ctlr_info_t *host = get_host(inode->i_bdev->bd_disk); |
| 475 | drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk); |
| 476 | |
| 477 | #ifdef CCISS_DEBUG |
| 478 | printk(KERN_DEBUG "cciss_open %s\n", inode->i_bdev->bd_disk->disk_name); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 479 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 481 | if (host->busy_initializing || drv->busy_configuring) |
| 482 | return -EBUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | /* |
| 484 | * Root is allowed to open raw volume zero even if it's not configured |
| 485 | * so array config can still work. Root is also allowed to open any |
| 486 | * volume that has a LUN ID, so it can issue IOCTL to reread the |
| 487 | * disk information. I don't think I really like this |
| 488 | * but I'm already using way to many device nodes to claim another one |
| 489 | * for "raw controller". |
| 490 | */ |
| 491 | if (drv->nr_blocks == 0) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 492 | if (iminor(inode) != 0) { /* not node 0? */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | /* if not node 0 make sure it is a partition = 0 */ |
| 494 | if (iminor(inode) & 0x0f) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 495 | return -ENXIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 496 | /* if it is, make sure we have a LUN ID */ |
| 497 | } else if (drv->LunID == 0) { |
| 498 | return -ENXIO; |
| 499 | } |
| 500 | } |
| 501 | if (!capable(CAP_SYS_ADMIN)) |
| 502 | return -EPERM; |
| 503 | } |
| 504 | drv->usage_count++; |
| 505 | host->usage_count++; |
| 506 | return 0; |
| 507 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 508 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | /* |
| 510 | * Close. Sync first. |
| 511 | */ |
| 512 | static int cciss_release(struct inode *inode, struct file *filep) |
| 513 | { |
| 514 | ctlr_info_t *host = get_host(inode->i_bdev->bd_disk); |
| 515 | drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk); |
| 516 | |
| 517 | #ifdef CCISS_DEBUG |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 518 | printk(KERN_DEBUG "cciss_release %s\n", |
| 519 | inode->i_bdev->bd_disk->disk_name); |
| 520 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | |
| 522 | drv->usage_count--; |
| 523 | host->usage_count--; |
| 524 | return 0; |
| 525 | } |
| 526 | |
| 527 | #ifdef CONFIG_COMPAT |
| 528 | |
| 529 | static int do_ioctl(struct file *f, unsigned cmd, unsigned long arg) |
| 530 | { |
| 531 | int ret; |
| 532 | lock_kernel(); |
| 533 | ret = cciss_ioctl(f->f_dentry->d_inode, f, cmd, arg); |
| 534 | unlock_kernel(); |
| 535 | return ret; |
| 536 | } |
| 537 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 538 | static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, |
| 539 | unsigned long arg); |
| 540 | static int cciss_ioctl32_big_passthru(struct file *f, unsigned cmd, |
| 541 | unsigned long arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | |
| 543 | static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg) |
| 544 | { |
| 545 | switch (cmd) { |
| 546 | case CCISS_GETPCIINFO: |
| 547 | case CCISS_GETINTINFO: |
| 548 | case CCISS_SETINTINFO: |
| 549 | case CCISS_GETNODENAME: |
| 550 | case CCISS_SETNODENAME: |
| 551 | case CCISS_GETHEARTBEAT: |
| 552 | case CCISS_GETBUSTYPES: |
| 553 | case CCISS_GETFIRMVER: |
| 554 | case CCISS_GETDRIVVER: |
| 555 | case CCISS_REVALIDVOLS: |
| 556 | case CCISS_DEREGDISK: |
| 557 | case CCISS_REGNEWDISK: |
| 558 | case CCISS_REGNEWD: |
| 559 | case CCISS_RESCANDISK: |
| 560 | case CCISS_GETLUNINFO: |
| 561 | return do_ioctl(f, cmd, arg); |
| 562 | |
| 563 | case CCISS_PASSTHRU32: |
| 564 | return cciss_ioctl32_passthru(f, cmd, arg); |
| 565 | case CCISS_BIG_PASSTHRU32: |
| 566 | return cciss_ioctl32_big_passthru(f, cmd, arg); |
| 567 | |
| 568 | default: |
| 569 | return -ENOIOCTLCMD; |
| 570 | } |
| 571 | } |
| 572 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 573 | static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, |
| 574 | unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | { |
| 576 | IOCTL32_Command_struct __user *arg32 = |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 577 | (IOCTL32_Command_struct __user *) arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 578 | IOCTL_Command_struct arg64; |
| 579 | IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64)); |
| 580 | int err; |
| 581 | u32 cp; |
| 582 | |
| 583 | err = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 584 | err |= |
| 585 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, |
| 586 | sizeof(arg64.LUN_info)); |
| 587 | err |= |
| 588 | copy_from_user(&arg64.Request, &arg32->Request, |
| 589 | sizeof(arg64.Request)); |
| 590 | err |= |
| 591 | copy_from_user(&arg64.error_info, &arg32->error_info, |
| 592 | sizeof(arg64.error_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 593 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
| 594 | err |= get_user(cp, &arg32->buf); |
| 595 | arg64.buf = compat_ptr(cp); |
| 596 | err |= copy_to_user(p, &arg64, sizeof(arg64)); |
| 597 | |
| 598 | if (err) |
| 599 | return -EFAULT; |
| 600 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 601 | err = do_ioctl(f, CCISS_PASSTHRU, (unsigned long)p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | if (err) |
| 603 | return err; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 604 | err |= |
| 605 | copy_in_user(&arg32->error_info, &p->error_info, |
| 606 | sizeof(arg32->error_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 607 | if (err) |
| 608 | return -EFAULT; |
| 609 | return err; |
| 610 | } |
| 611 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 612 | static int cciss_ioctl32_big_passthru(struct file *file, unsigned cmd, |
| 613 | unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 614 | { |
| 615 | BIG_IOCTL32_Command_struct __user *arg32 = |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 616 | (BIG_IOCTL32_Command_struct __user *) arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 617 | BIG_IOCTL_Command_struct arg64; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 618 | BIG_IOCTL_Command_struct __user *p = |
| 619 | compat_alloc_user_space(sizeof(arg64)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | int err; |
| 621 | u32 cp; |
| 622 | |
| 623 | err = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 624 | err |= |
| 625 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, |
| 626 | sizeof(arg64.LUN_info)); |
| 627 | err |= |
| 628 | copy_from_user(&arg64.Request, &arg32->Request, |
| 629 | sizeof(arg64.Request)); |
| 630 | err |= |
| 631 | copy_from_user(&arg64.error_info, &arg32->error_info, |
| 632 | sizeof(arg64.error_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 633 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
| 634 | err |= get_user(arg64.malloc_size, &arg32->malloc_size); |
| 635 | err |= get_user(cp, &arg32->buf); |
| 636 | arg64.buf = compat_ptr(cp); |
| 637 | err |= copy_to_user(p, &arg64, sizeof(arg64)); |
| 638 | |
| 639 | if (err) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 640 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 641 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 642 | err = do_ioctl(file, CCISS_BIG_PASSTHRU, (unsigned long)p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 643 | if (err) |
| 644 | return err; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 645 | err |= |
| 646 | copy_in_user(&arg32->error_info, &p->error_info, |
| 647 | sizeof(arg32->error_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 648 | if (err) |
| 649 | return -EFAULT; |
| 650 | return err; |
| 651 | } |
| 652 | #endif |
Christoph Hellwig | a885c8c | 2006-01-08 01:02:50 -0800 | [diff] [blame] | 653 | |
| 654 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo) |
| 655 | { |
| 656 | drive_info_struct *drv = get_drv(bdev->bd_disk); |
| 657 | |
| 658 | if (!drv->cylinders) |
| 659 | return -ENXIO; |
| 660 | |
| 661 | geo->heads = drv->heads; |
| 662 | geo->sectors = drv->sectors; |
| 663 | geo->cylinders = drv->cylinders; |
| 664 | return 0; |
| 665 | } |
| 666 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | /* |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 668 | * ioctl |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 669 | */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 670 | static int cciss_ioctl(struct inode *inode, struct file *filep, |
| 671 | unsigned int cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 672 | { |
| 673 | struct block_device *bdev = inode->i_bdev; |
| 674 | struct gendisk *disk = bdev->bd_disk; |
| 675 | ctlr_info_t *host = get_host(disk); |
| 676 | drive_info_struct *drv = get_drv(disk); |
| 677 | int ctlr = host->ctlr; |
| 678 | void __user *argp = (void __user *)arg; |
| 679 | |
| 680 | #ifdef CCISS_DEBUG |
| 681 | 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] | 682 | #endif /* CCISS_DEBUG */ |
| 683 | |
| 684 | switch (cmd) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 685 | case CCISS_GETPCIINFO: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 686 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 687 | cciss_pci_info_struct pciinfo; |
| 688 | |
| 689 | if (!arg) |
| 690 | return -EINVAL; |
| 691 | pciinfo.domain = pci_domain_nr(host->pdev->bus); |
| 692 | pciinfo.bus = host->pdev->bus->number; |
| 693 | pciinfo.dev_fn = host->pdev->devfn; |
| 694 | pciinfo.board_id = host->board_id; |
| 695 | if (copy_to_user |
| 696 | (argp, &pciinfo, sizeof(cciss_pci_info_struct))) |
| 697 | return -EFAULT; |
| 698 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 699 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 700 | case CCISS_GETINTINFO: |
| 701 | { |
| 702 | cciss_coalint_struct intinfo; |
| 703 | if (!arg) |
| 704 | return -EINVAL; |
| 705 | intinfo.delay = |
| 706 | readl(&host->cfgtable->HostWrite.CoalIntDelay); |
| 707 | intinfo.count = |
| 708 | readl(&host->cfgtable->HostWrite.CoalIntCount); |
| 709 | if (copy_to_user |
| 710 | (argp, &intinfo, sizeof(cciss_coalint_struct))) |
| 711 | return -EFAULT; |
| 712 | return 0; |
| 713 | } |
| 714 | case CCISS_SETINTINFO: |
| 715 | { |
| 716 | cciss_coalint_struct intinfo; |
| 717 | unsigned long flags; |
| 718 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 719 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 720 | if (!arg) |
| 721 | return -EINVAL; |
| 722 | if (!capable(CAP_SYS_ADMIN)) |
| 723 | return -EPERM; |
| 724 | if (copy_from_user |
| 725 | (&intinfo, argp, sizeof(cciss_coalint_struct))) |
| 726 | return -EFAULT; |
| 727 | if ((intinfo.delay == 0) && (intinfo.count == 0)) |
| 728 | { |
| 729 | // printk("cciss_ioctl: delay and count cannot be 0\n"); |
| 730 | return -EINVAL; |
| 731 | } |
| 732 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); |
| 733 | /* Update the field, and then ring the doorbell */ |
| 734 | writel(intinfo.delay, |
| 735 | &(host->cfgtable->HostWrite.CoalIntDelay)); |
| 736 | writel(intinfo.count, |
| 737 | &(host->cfgtable->HostWrite.CoalIntCount)); |
| 738 | writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); |
| 739 | |
| 740 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { |
| 741 | if (!(readl(host->vaddr + SA5_DOORBELL) |
| 742 | & CFGTBL_ChangeReq)) |
| 743 | break; |
| 744 | /* delay and try again */ |
| 745 | udelay(1000); |
| 746 | } |
| 747 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
| 748 | if (i >= MAX_IOCTL_CONFIG_WAIT) |
| 749 | return -EAGAIN; |
| 750 | return 0; |
| 751 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | case CCISS_GETNODENAME: |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 753 | { |
| 754 | NodeName_type NodeName; |
| 755 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 756 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 757 | if (!arg) |
| 758 | return -EINVAL; |
| 759 | for (i = 0; i < 16; i++) |
| 760 | NodeName[i] = |
| 761 | readb(&host->cfgtable->ServerName[i]); |
| 762 | if (copy_to_user(argp, NodeName, sizeof(NodeName_type))) |
| 763 | return -EFAULT; |
| 764 | return 0; |
| 765 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 766 | case CCISS_SETNODENAME: |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 767 | { |
| 768 | NodeName_type NodeName; |
| 769 | unsigned long flags; |
| 770 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 771 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 772 | if (!arg) |
| 773 | return -EINVAL; |
| 774 | if (!capable(CAP_SYS_ADMIN)) |
| 775 | return -EPERM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 776 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 777 | if (copy_from_user |
| 778 | (NodeName, argp, sizeof(NodeName_type))) |
| 779 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 780 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 781 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 782 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 783 | /* Update the field, and then ring the doorbell */ |
| 784 | for (i = 0; i < 16; i++) |
| 785 | writeb(NodeName[i], |
| 786 | &host->cfgtable->ServerName[i]); |
| 787 | |
| 788 | writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); |
| 789 | |
| 790 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { |
| 791 | if (!(readl(host->vaddr + SA5_DOORBELL) |
| 792 | & CFGTBL_ChangeReq)) |
| 793 | break; |
| 794 | /* delay and try again */ |
| 795 | udelay(1000); |
| 796 | } |
| 797 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
| 798 | if (i >= MAX_IOCTL_CONFIG_WAIT) |
| 799 | return -EAGAIN; |
| 800 | return 0; |
| 801 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | |
| 803 | case CCISS_GETHEARTBEAT: |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 804 | { |
| 805 | Heartbeat_type heartbeat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 806 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 807 | if (!arg) |
| 808 | return -EINVAL; |
| 809 | heartbeat = readl(&host->cfgtable->HeartBeat); |
| 810 | if (copy_to_user |
| 811 | (argp, &heartbeat, sizeof(Heartbeat_type))) |
| 812 | return -EFAULT; |
| 813 | return 0; |
| 814 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 815 | case CCISS_GETBUSTYPES: |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 816 | { |
| 817 | BusTypes_type BusTypes; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 818 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 819 | if (!arg) |
| 820 | return -EINVAL; |
| 821 | BusTypes = readl(&host->cfgtable->BusTypes); |
| 822 | if (copy_to_user |
| 823 | (argp, &BusTypes, sizeof(BusTypes_type))) |
| 824 | return -EFAULT; |
| 825 | return 0; |
| 826 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 827 | case CCISS_GETFIRMVER: |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 828 | { |
| 829 | FirmwareVer_type firmware; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 830 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 831 | if (!arg) |
| 832 | return -EINVAL; |
| 833 | memcpy(firmware, host->firm_ver, 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 834 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 835 | if (copy_to_user |
| 836 | (argp, firmware, sizeof(FirmwareVer_type))) |
| 837 | return -EFAULT; |
| 838 | return 0; |
| 839 | } |
| 840 | case CCISS_GETDRIVVER: |
| 841 | { |
| 842 | DriverVer_type DriverVer = DRIVER_VERSION; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 843 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 844 | if (!arg) |
| 845 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 846 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 847 | if (copy_to_user |
| 848 | (argp, &DriverVer, sizeof(DriverVer_type))) |
| 849 | return -EFAULT; |
| 850 | return 0; |
| 851 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 852 | |
| 853 | case CCISS_REVALIDVOLS: |
| 854 | if (bdev != bdev->bd_contains || drv != host->drv) |
| 855 | return -ENXIO; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 856 | return revalidate_allvol(host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 857 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 858 | case CCISS_GETLUNINFO:{ |
| 859 | LogvolInfo_struct luninfo; |
| 860 | |
| 861 | luninfo.LunID = drv->LunID; |
| 862 | luninfo.num_opens = drv->usage_count; |
| 863 | luninfo.num_parts = 0; |
| 864 | if (copy_to_user(argp, &luninfo, |
| 865 | sizeof(LogvolInfo_struct))) |
| 866 | return -EFAULT; |
| 867 | return 0; |
| 868 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 869 | case CCISS_DEREGDISK: |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 870 | return rebuild_lun_table(host, disk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 871 | |
| 872 | case CCISS_REGNEWD: |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 873 | return rebuild_lun_table(host, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 874 | |
| 875 | case CCISS_PASSTHRU: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 876 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 877 | IOCTL_Command_struct iocommand; |
| 878 | CommandList_struct *c; |
| 879 | char *buff = NULL; |
| 880 | u64bit temp64; |
| 881 | unsigned long flags; |
Peter Zijlstra | 6e9a473 | 2006-09-30 23:28:10 -0700 | [diff] [blame] | 882 | DECLARE_COMPLETION_ONSTACK(wait); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 883 | |
| 884 | if (!arg) |
| 885 | return -EINVAL; |
| 886 | |
| 887 | if (!capable(CAP_SYS_RAWIO)) |
| 888 | return -EPERM; |
| 889 | |
| 890 | if (copy_from_user |
| 891 | (&iocommand, argp, sizeof(IOCTL_Command_struct))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 892 | return -EFAULT; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 893 | if ((iocommand.buf_size < 1) && |
| 894 | (iocommand.Request.Type.Direction != XFER_NONE)) { |
| 895 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 896 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 897 | #if 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */ |
| 898 | /* Check kmalloc limits */ |
| 899 | if (iocommand.buf_size > 128000) |
| 900 | return -EINVAL; |
| 901 | #endif |
| 902 | if (iocommand.buf_size > 0) { |
| 903 | buff = kmalloc(iocommand.buf_size, GFP_KERNEL); |
| 904 | if (buff == NULL) |
| 905 | return -EFAULT; |
| 906 | } |
| 907 | if (iocommand.Request.Type.Direction == XFER_WRITE) { |
| 908 | /* Copy the data into the buffer we created */ |
| 909 | if (copy_from_user |
| 910 | (buff, iocommand.buf, iocommand.buf_size)) { |
| 911 | kfree(buff); |
| 912 | return -EFAULT; |
| 913 | } |
| 914 | } else { |
| 915 | memset(buff, 0, iocommand.buf_size); |
| 916 | } |
| 917 | if ((c = cmd_alloc(host, 0)) == NULL) { |
| 918 | kfree(buff); |
| 919 | return -ENOMEM; |
| 920 | } |
| 921 | // Fill in the command type |
| 922 | c->cmd_type = CMD_IOCTL_PEND; |
| 923 | // Fill in Command Header |
| 924 | c->Header.ReplyQueue = 0; // unused in simple mode |
| 925 | if (iocommand.buf_size > 0) // buffer to fill |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 926 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 927 | c->Header.SGList = 1; |
| 928 | c->Header.SGTotal = 1; |
| 929 | } else // no buffers to fill |
| 930 | { |
| 931 | c->Header.SGList = 0; |
| 932 | c->Header.SGTotal = 0; |
| 933 | } |
| 934 | c->Header.LUN = iocommand.LUN_info; |
| 935 | c->Header.Tag.lower = c->busaddr; // use the kernel address the cmd block for tag |
| 936 | |
| 937 | // Fill in Request block |
| 938 | c->Request = iocommand.Request; |
| 939 | |
| 940 | // Fill in the scatter gather information |
| 941 | if (iocommand.buf_size > 0) { |
| 942 | temp64.val = pci_map_single(host->pdev, buff, |
| 943 | iocommand.buf_size, |
| 944 | PCI_DMA_BIDIRECTIONAL); |
| 945 | c->SG[0].Addr.lower = temp64.val32.lower; |
| 946 | c->SG[0].Addr.upper = temp64.val32.upper; |
| 947 | c->SG[0].Len = iocommand.buf_size; |
| 948 | c->SG[0].Ext = 0; // we are not chaining |
| 949 | } |
| 950 | c->waiting = &wait; |
| 951 | |
| 952 | /* Put the request on the tail of the request queue */ |
| 953 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); |
| 954 | addQ(&host->reqQ, c); |
| 955 | host->Qdepth++; |
| 956 | start_io(host); |
| 957 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
| 958 | |
| 959 | wait_for_completion(&wait); |
| 960 | |
| 961 | /* unlock the buffers from DMA */ |
| 962 | temp64.val32.lower = c->SG[0].Addr.lower; |
| 963 | temp64.val32.upper = c->SG[0].Addr.upper; |
| 964 | pci_unmap_single(host->pdev, (dma_addr_t) temp64.val, |
| 965 | iocommand.buf_size, |
| 966 | PCI_DMA_BIDIRECTIONAL); |
| 967 | |
| 968 | /* Copy the error information out */ |
| 969 | iocommand.error_info = *(c->err_info); |
| 970 | if (copy_to_user |
| 971 | (argp, &iocommand, sizeof(IOCTL_Command_struct))) { |
| 972 | kfree(buff); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 973 | cmd_free(host, c, 0); |
| 974 | return -EFAULT; |
| 975 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 976 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 977 | if (iocommand.Request.Type.Direction == XFER_READ) { |
| 978 | /* Copy the data out of the buffer we created */ |
| 979 | if (copy_to_user |
| 980 | (iocommand.buf, buff, iocommand.buf_size)) { |
| 981 | kfree(buff); |
| 982 | cmd_free(host, c, 0); |
| 983 | return -EFAULT; |
| 984 | } |
| 985 | } |
| 986 | kfree(buff); |
| 987 | cmd_free(host, c, 0); |
| 988 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 989 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 990 | case CCISS_BIG_PASSTHRU:{ |
| 991 | BIG_IOCTL_Command_struct *ioc; |
| 992 | CommandList_struct *c; |
| 993 | unsigned char **buff = NULL; |
| 994 | int *buff_size = NULL; |
| 995 | u64bit temp64; |
| 996 | unsigned long flags; |
| 997 | BYTE sg_used = 0; |
| 998 | int status = 0; |
| 999 | int i; |
Peter Zijlstra | 6e9a473 | 2006-09-30 23:28:10 -0700 | [diff] [blame] | 1000 | DECLARE_COMPLETION_ONSTACK(wait); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1001 | __u32 left; |
| 1002 | __u32 sz; |
| 1003 | BYTE __user *data_ptr; |
| 1004 | |
| 1005 | if (!arg) |
| 1006 | return -EINVAL; |
| 1007 | if (!capable(CAP_SYS_RAWIO)) |
| 1008 | return -EPERM; |
| 1009 | ioc = (BIG_IOCTL_Command_struct *) |
| 1010 | kmalloc(sizeof(*ioc), GFP_KERNEL); |
| 1011 | if (!ioc) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1012 | status = -ENOMEM; |
| 1013 | goto cleanup1; |
| 1014 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1015 | if (copy_from_user(ioc, argp, sizeof(*ioc))) { |
| 1016 | status = -EFAULT; |
| 1017 | goto cleanup1; |
| 1018 | } |
| 1019 | if ((ioc->buf_size < 1) && |
| 1020 | (ioc->Request.Type.Direction != XFER_NONE)) { |
| 1021 | status = -EINVAL; |
| 1022 | goto cleanup1; |
| 1023 | } |
| 1024 | /* Check kmalloc limits using all SGs */ |
| 1025 | if (ioc->malloc_size > MAX_KMALLOC_SIZE) { |
| 1026 | status = -EINVAL; |
| 1027 | goto cleanup1; |
| 1028 | } |
| 1029 | if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) { |
| 1030 | status = -EINVAL; |
| 1031 | goto cleanup1; |
| 1032 | } |
| 1033 | buff = |
| 1034 | kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL); |
| 1035 | if (!buff) { |
| 1036 | status = -ENOMEM; |
| 1037 | goto cleanup1; |
| 1038 | } |
| 1039 | buff_size = (int *)kmalloc(MAXSGENTRIES * sizeof(int), |
| 1040 | GFP_KERNEL); |
| 1041 | if (!buff_size) { |
| 1042 | status = -ENOMEM; |
| 1043 | goto cleanup1; |
| 1044 | } |
| 1045 | left = ioc->buf_size; |
| 1046 | data_ptr = ioc->buf; |
| 1047 | while (left) { |
| 1048 | sz = (left > |
| 1049 | ioc->malloc_size) ? ioc-> |
| 1050 | malloc_size : left; |
| 1051 | buff_size[sg_used] = sz; |
| 1052 | buff[sg_used] = kmalloc(sz, GFP_KERNEL); |
| 1053 | if (buff[sg_used] == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1054 | status = -ENOMEM; |
Jens Axboe | 15534d3 | 2005-11-18 22:02:44 +0100 | [diff] [blame] | 1055 | goto cleanup1; |
| 1056 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1057 | if (ioc->Request.Type.Direction == XFER_WRITE) { |
| 1058 | if (copy_from_user |
| 1059 | (buff[sg_used], data_ptr, sz)) { |
| 1060 | status = -ENOMEM; |
| 1061 | goto cleanup1; |
| 1062 | } |
| 1063 | } else { |
| 1064 | memset(buff[sg_used], 0, sz); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1065 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1066 | left -= sz; |
| 1067 | data_ptr += sz; |
| 1068 | sg_used++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1069 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1070 | if ((c = cmd_alloc(host, 0)) == NULL) { |
| 1071 | status = -ENOMEM; |
| 1072 | goto cleanup1; |
| 1073 | } |
| 1074 | c->cmd_type = CMD_IOCTL_PEND; |
| 1075 | c->Header.ReplyQueue = 0; |
| 1076 | |
| 1077 | if (ioc->buf_size > 0) { |
| 1078 | c->Header.SGList = sg_used; |
| 1079 | c->Header.SGTotal = sg_used; |
| 1080 | } else { |
| 1081 | c->Header.SGList = 0; |
| 1082 | c->Header.SGTotal = 0; |
| 1083 | } |
| 1084 | c->Header.LUN = ioc->LUN_info; |
| 1085 | c->Header.Tag.lower = c->busaddr; |
| 1086 | |
| 1087 | c->Request = ioc->Request; |
| 1088 | if (ioc->buf_size > 0) { |
| 1089 | int i; |
| 1090 | for (i = 0; i < sg_used; i++) { |
| 1091 | temp64.val = |
| 1092 | pci_map_single(host->pdev, buff[i], |
| 1093 | buff_size[i], |
| 1094 | PCI_DMA_BIDIRECTIONAL); |
| 1095 | c->SG[i].Addr.lower = |
| 1096 | temp64.val32.lower; |
| 1097 | c->SG[i].Addr.upper = |
| 1098 | temp64.val32.upper; |
| 1099 | c->SG[i].Len = buff_size[i]; |
| 1100 | c->SG[i].Ext = 0; /* we are not chaining */ |
| 1101 | } |
| 1102 | } |
| 1103 | c->waiting = &wait; |
| 1104 | /* Put the request on the tail of the request queue */ |
| 1105 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); |
| 1106 | addQ(&host->reqQ, c); |
| 1107 | host->Qdepth++; |
| 1108 | start_io(host); |
| 1109 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
| 1110 | wait_for_completion(&wait); |
| 1111 | /* unlock the buffers from DMA */ |
| 1112 | for (i = 0; i < sg_used; i++) { |
| 1113 | temp64.val32.lower = c->SG[i].Addr.lower; |
| 1114 | temp64.val32.upper = c->SG[i].Addr.upper; |
| 1115 | pci_unmap_single(host->pdev, |
| 1116 | (dma_addr_t) temp64.val, buff_size[i], |
| 1117 | PCI_DMA_BIDIRECTIONAL); |
| 1118 | } |
| 1119 | /* Copy the error information out */ |
| 1120 | ioc->error_info = *(c->err_info); |
| 1121 | if (copy_to_user(argp, ioc, sizeof(*ioc))) { |
| 1122 | cmd_free(host, c, 0); |
| 1123 | status = -EFAULT; |
| 1124 | goto cleanup1; |
| 1125 | } |
| 1126 | if (ioc->Request.Type.Direction == XFER_READ) { |
| 1127 | /* Copy the data out of the buffer we created */ |
| 1128 | BYTE __user *ptr = ioc->buf; |
| 1129 | for (i = 0; i < sg_used; i++) { |
| 1130 | if (copy_to_user |
| 1131 | (ptr, buff[i], buff_size[i])) { |
| 1132 | cmd_free(host, c, 0); |
| 1133 | status = -EFAULT; |
| 1134 | goto cleanup1; |
| 1135 | } |
| 1136 | ptr += buff_size[i]; |
| 1137 | } |
| 1138 | } |
| 1139 | cmd_free(host, c, 0); |
| 1140 | status = 0; |
| 1141 | cleanup1: |
| 1142 | if (buff) { |
| 1143 | for (i = 0; i < sg_used; i++) |
| 1144 | kfree(buff[i]); |
| 1145 | kfree(buff); |
| 1146 | } |
| 1147 | kfree(buff_size); |
| 1148 | kfree(ioc); |
| 1149 | return status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1150 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1151 | default: |
| 1152 | return -ENOTTY; |
| 1153 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1154 | } |
| 1155 | |
| 1156 | /* |
| 1157 | * revalidate_allvol is for online array config utilities. After a |
| 1158 | * utility reconfigures the drives in the array, it can use this function |
| 1159 | * (through an ioctl) to make the driver zap any previous disk structs for |
| 1160 | * that controller and get new ones. |
| 1161 | * |
| 1162 | * Right now I'm using the getgeometry() function to do this, but this |
| 1163 | * function should probably be finer grained and allow you to revalidate one |
Bjorn Helgaas | d14c4ab | 2006-06-25 05:49:04 -0700 | [diff] [blame] | 1164 | * particular logical volume (instead of all of them on a particular |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1165 | * controller). |
| 1166 | */ |
| 1167 | static int revalidate_allvol(ctlr_info_t *host) |
| 1168 | { |
| 1169 | int ctlr = host->ctlr, i; |
| 1170 | unsigned long flags; |
| 1171 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1172 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); |
| 1173 | if (host->usage_count > 1) { |
| 1174 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
| 1175 | printk(KERN_WARNING "cciss: Device busy for volume" |
| 1176 | " revalidation (usage=%d)\n", host->usage_count); |
| 1177 | return -EBUSY; |
| 1178 | } |
| 1179 | host->usage_count++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1180 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
| 1181 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1182 | for (i = 0; i < NWD; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1183 | struct gendisk *disk = host->gendisk[i]; |
mikem | 6f5a0f7 | 2005-11-18 22:05:36 +0100 | [diff] [blame] | 1184 | if (disk) { |
| 1185 | request_queue_t *q = disk->queue; |
| 1186 | |
| 1187 | if (disk->flags & GENHD_FL_UP) |
| 1188 | del_gendisk(disk); |
| 1189 | if (q) |
| 1190 | blk_cleanup_queue(q); |
mikem | 6f5a0f7 | 2005-11-18 22:05:36 +0100 | [diff] [blame] | 1191 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1192 | } |
| 1193 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1194 | /* |
| 1195 | * Set the partition and block size structures for all volumes |
| 1196 | * on this controller to zero. We will reread all of this data |
| 1197 | */ |
| 1198 | memset(host->drv, 0, sizeof(drive_info_struct) |
| 1199 | * CISS_MAX_LUN); |
| 1200 | /* |
| 1201 | * Tell the array controller not to give us any interrupts while |
| 1202 | * we check the new geometry. Then turn interrupts back on when |
| 1203 | * we're done. |
| 1204 | */ |
| 1205 | host->access.set_intr_mask(host, CCISS_INTR_OFF); |
| 1206 | cciss_getgeometry(ctlr); |
| 1207 | host->access.set_intr_mask(host, CCISS_INTR_ON); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1208 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1209 | /* Loop through each real device */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1210 | for (i = 0; i < NWD; i++) { |
| 1211 | struct gendisk *disk = host->gendisk[i]; |
| 1212 | drive_info_struct *drv = &(host->drv[i]); |
| 1213 | /* we must register the controller even if no disks exist */ |
| 1214 | /* this is for the online array utilities */ |
| 1215 | if (!drv->heads && i) |
| 1216 | continue; |
Mike Miller | ad2b931 | 2005-07-28 01:07:31 -0700 | [diff] [blame] | 1217 | blk_queue_hardsect_size(drv->queue, drv->block_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1218 | set_capacity(disk, drv->nr_blocks); |
| 1219 | add_disk(disk); |
| 1220 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1221 | host->usage_count--; |
| 1222 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1223 | } |
| 1224 | |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1225 | static inline void complete_buffers(struct bio *bio, int status) |
| 1226 | { |
| 1227 | while (bio) { |
| 1228 | struct bio *xbh = bio->bi_next; |
| 1229 | int nr_sectors = bio_sectors(bio); |
| 1230 | |
| 1231 | bio->bi_next = NULL; |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1232 | bio_endio(bio, nr_sectors << 9, status ? 0 : -EIO); |
| 1233 | bio = xbh; |
| 1234 | } |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1235 | } |
| 1236 | |
Jens Axboe | 7b30f09 | 2006-07-25 15:02:48 +0200 | [diff] [blame] | 1237 | static void cciss_check_queues(ctlr_info_t *h) |
| 1238 | { |
| 1239 | int start_queue = h->next_to_run; |
| 1240 | int i; |
| 1241 | |
| 1242 | /* check to see if we have maxed out the number of commands that can |
| 1243 | * be placed on the queue. If so then exit. We do this check here |
| 1244 | * in case the interrupt we serviced was from an ioctl and did not |
| 1245 | * free any new commands. |
| 1246 | */ |
| 1247 | if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS) |
| 1248 | return; |
| 1249 | |
| 1250 | /* We have room on the queue for more commands. Now we need to queue |
| 1251 | * them up. We will also keep track of the next queue to run so |
| 1252 | * that every queue gets a chance to be started first. |
| 1253 | */ |
| 1254 | for (i = 0; i < h->highest_lun + 1; i++) { |
| 1255 | int curr_queue = (start_queue + i) % (h->highest_lun + 1); |
| 1256 | /* make sure the disk has been added and the drive is real |
| 1257 | * because this can be called from the middle of init_one. |
| 1258 | */ |
| 1259 | if (!(h->drv[curr_queue].queue) || !(h->drv[curr_queue].heads)) |
| 1260 | continue; |
| 1261 | blk_start_queue(h->gendisk[curr_queue]->queue); |
| 1262 | |
| 1263 | /* check to see if we have maxed out the number of commands |
| 1264 | * that can be placed on the queue. |
| 1265 | */ |
| 1266 | if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS) { |
| 1267 | if (curr_queue == start_queue) { |
| 1268 | h->next_to_run = |
| 1269 | (start_queue + 1) % (h->highest_lun + 1); |
| 1270 | break; |
| 1271 | } else { |
| 1272 | h->next_to_run = curr_queue; |
| 1273 | break; |
| 1274 | } |
| 1275 | } else { |
| 1276 | curr_queue = (curr_queue + 1) % (h->highest_lun + 1); |
| 1277 | } |
| 1278 | } |
| 1279 | } |
| 1280 | |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1281 | static void cciss_softirq_done(struct request *rq) |
| 1282 | { |
| 1283 | CommandList_struct *cmd = rq->completion_data; |
| 1284 | ctlr_info_t *h = hba[cmd->ctlr]; |
| 1285 | unsigned long flags; |
| 1286 | u64bit temp64; |
| 1287 | int i, ddir; |
| 1288 | |
| 1289 | if (cmd->Request.Type.Direction == XFER_READ) |
| 1290 | ddir = PCI_DMA_FROMDEVICE; |
| 1291 | else |
| 1292 | ddir = PCI_DMA_TODEVICE; |
| 1293 | |
| 1294 | /* command did not need to be retried */ |
| 1295 | /* unmap the DMA mapping for all the scatter gather elements */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1296 | for (i = 0; i < cmd->Header.SGList; i++) { |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1297 | temp64.val32.lower = cmd->SG[i].Addr.lower; |
| 1298 | temp64.val32.upper = cmd->SG[i].Addr.upper; |
| 1299 | pci_unmap_page(h->pdev, temp64.val, cmd->SG[i].Len, ddir); |
| 1300 | } |
| 1301 | |
| 1302 | complete_buffers(rq->bio, rq->errors); |
| 1303 | |
Jens Axboe | b369c2c | 2006-11-14 12:36:03 +0100 | [diff] [blame] | 1304 | if (blk_fs_request(rq)) { |
| 1305 | const int rw = rq_data_dir(rq); |
| 1306 | |
| 1307 | disk_stat_add(rq->rq_disk, sectors[rw], rq->nr_sectors); |
| 1308 | } |
| 1309 | |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1310 | #ifdef CCISS_DEBUG |
| 1311 | printk("Done with %p\n", rq); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1312 | #endif /* CCISS_DEBUG */ |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1313 | |
Matt Mackall | 8bd0b97 | 2006-06-25 05:47:11 -0700 | [diff] [blame] | 1314 | add_disk_randomness(rq->rq_disk); |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1315 | spin_lock_irqsave(&h->lock, flags); |
| 1316 | end_that_request_last(rq, rq->errors); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1317 | cmd_free(h, cmd, 1); |
Jens Axboe | 7b30f09 | 2006-07-25 15:02:48 +0200 | [diff] [blame] | 1318 | cciss_check_queues(h); |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1319 | spin_unlock_irqrestore(&h->lock, flags); |
| 1320 | } |
| 1321 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1322 | /* This function will check the usage_count of the drive to be updated/added. |
| 1323 | * If the usage_count is zero then the drive information will be updated and |
| 1324 | * the disk will be re-registered with the kernel. If not then it will be |
| 1325 | * left alone for the next reboot. The exception to this is disk 0 which |
| 1326 | * will always be left registered with the kernel since it is also the |
| 1327 | * controller node. Any changes to disk 0 will show up on the next |
| 1328 | * reboot. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1329 | */ |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1330 | static void cciss_update_drive_info(int ctlr, int drv_index) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1331 | { |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1332 | ctlr_info_t *h = hba[ctlr]; |
| 1333 | struct gendisk *disk; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1334 | InquiryData_struct *inq_buff = NULL; |
| 1335 | unsigned int block_size; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 1336 | sector_t total_size; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1337 | unsigned long flags = 0; |
| 1338 | int ret = 0; |
| 1339 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1340 | /* if the disk already exists then deregister it before proceeding */ |
| 1341 | if (h->drv[drv_index].raid_level != -1) { |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1342 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
| 1343 | h->drv[drv_index].busy_configuring = 1; |
| 1344 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
| 1345 | ret = deregister_disk(h->gendisk[drv_index], |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1346 | &h->drv[drv_index], 0); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1347 | h->drv[drv_index].busy_configuring = 0; |
| 1348 | } |
| 1349 | |
| 1350 | /* If the disk is in use return */ |
| 1351 | if (ret) |
| 1352 | return; |
| 1353 | |
Bjorn Helgaas | d14c4ab | 2006-06-25 05:49:04 -0700 | [diff] [blame] | 1354 | /* Get information about the disk and modify the driver structure */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1355 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1356 | if (inq_buff == NULL) |
| 1357 | goto mem_msg; |
| 1358 | |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 1359 | cciss_read_capacity(ctlr, drv_index, 1, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1360 | &total_size, &block_size); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 1361 | |
| 1362 | /* total size = last LBA + 1 */ |
| 1363 | /* FFFFFFFF + 1 = 0, cannot have a logical volume of size 0 */ |
| 1364 | /* so we assume this volume this must be >2TB in size */ |
| 1365 | if (total_size == (__u32) 0) { |
| 1366 | cciss_read_capacity_16(ctlr, drv_index, 1, |
| 1367 | &total_size, &block_size); |
| 1368 | h->cciss_read = CCISS_READ_16; |
| 1369 | h->cciss_write = CCISS_WRITE_16; |
| 1370 | } else { |
| 1371 | h->cciss_read = CCISS_READ_10; |
| 1372 | h->cciss_write = CCISS_WRITE_10; |
| 1373 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1374 | cciss_geometry_inquiry(ctlr, drv_index, 1, total_size, block_size, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1375 | inq_buff, &h->drv[drv_index]); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1376 | |
| 1377 | ++h->num_luns; |
| 1378 | disk = h->gendisk[drv_index]; |
| 1379 | set_capacity(disk, h->drv[drv_index].nr_blocks); |
| 1380 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1381 | /* if it's the controller it's already added */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1382 | if (drv_index) { |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1383 | disk->queue = blk_init_queue(do_cciss_request, &h->lock); |
| 1384 | |
| 1385 | /* Set up queue information */ |
| 1386 | disk->queue->backing_dev_info.ra_pages = READ_AHEAD; |
| 1387 | blk_queue_bounce_limit(disk->queue, hba[ctlr]->pdev->dma_mask); |
| 1388 | |
| 1389 | /* This is a hardware imposed limit. */ |
| 1390 | blk_queue_max_hw_segments(disk->queue, MAXSGENTRIES); |
| 1391 | |
| 1392 | /* This is a limit in the driver and could be eliminated. */ |
| 1393 | blk_queue_max_phys_segments(disk->queue, MAXSGENTRIES); |
| 1394 | |
| 1395 | blk_queue_max_sectors(disk->queue, 512); |
| 1396 | |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1397 | blk_queue_softirq_done(disk->queue, cciss_softirq_done); |
| 1398 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1399 | disk->queue->queuedata = hba[ctlr]; |
| 1400 | |
| 1401 | blk_queue_hardsect_size(disk->queue, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1402 | hba[ctlr]->drv[drv_index].block_size); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1403 | |
| 1404 | h->drv[drv_index].queue = disk->queue; |
| 1405 | add_disk(disk); |
| 1406 | } |
| 1407 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1408 | freeret: |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1409 | kfree(inq_buff); |
| 1410 | return; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1411 | mem_msg: |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1412 | printk(KERN_ERR "cciss: out of memory\n"); |
| 1413 | goto freeret; |
| 1414 | } |
| 1415 | |
| 1416 | /* This function will find the first index of the controllers drive array |
| 1417 | * that has a -1 for the raid_level and will return that index. This is |
| 1418 | * where new drives will be added. If the index to be returned is greater |
| 1419 | * than the highest_lun index for the controller then highest_lun is set |
| 1420 | * to this new index. If there are no available indexes then -1 is returned. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1421 | */ |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1422 | static int cciss_find_free_drive_index(int ctlr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1423 | { |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1424 | int i; |
| 1425 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1426 | for (i = 0; i < CISS_MAX_LUN; i++) { |
| 1427 | if (hba[ctlr]->drv[i].raid_level == -1) { |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1428 | if (i > hba[ctlr]->highest_lun) |
| 1429 | hba[ctlr]->highest_lun = i; |
| 1430 | return i; |
| 1431 | } |
| 1432 | } |
| 1433 | return -1; |
| 1434 | } |
| 1435 | |
| 1436 | /* This function will add and remove logical drives from the Logical |
Bjorn Helgaas | d14c4ab | 2006-06-25 05:49:04 -0700 | [diff] [blame] | 1437 | * drive array of the controller and maintain persistency of ordering |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1438 | * so that mount points are preserved until the next reboot. This allows |
| 1439 | * for the removal of logical drives in the middle of the drive array |
| 1440 | * without a re-ordering of those drives. |
| 1441 | * INPUT |
| 1442 | * h = The controller to perform the operations on |
| 1443 | * del_disk = The disk to remove if specified. If the value given |
| 1444 | * is NULL then no disk is removed. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1445 | */ |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1446 | static int rebuild_lun_table(ctlr_info_t *h, struct gendisk *del_disk) |
| 1447 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1448 | int ctlr = h->ctlr; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1449 | int num_luns; |
| 1450 | ReportLunData_struct *ld_buff = NULL; |
| 1451 | drive_info_struct *drv = NULL; |
| 1452 | int return_code; |
| 1453 | int listlength = 0; |
| 1454 | int i; |
| 1455 | int drv_found; |
| 1456 | int drv_index = 0; |
| 1457 | __u32 lunid = 0; |
| 1458 | unsigned long flags; |
| 1459 | |
| 1460 | /* Set busy_configuring flag for this operation */ |
| 1461 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1462 | if (h->num_luns >= CISS_MAX_LUN) { |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1463 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
| 1464 | return -EINVAL; |
| 1465 | } |
| 1466 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1467 | if (h->busy_configuring) { |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1468 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
| 1469 | return -EBUSY; |
| 1470 | } |
| 1471 | h->busy_configuring = 1; |
| 1472 | |
| 1473 | /* if del_disk is NULL then we are being called to add a new disk |
| 1474 | * and update the logical drive table. If it is not NULL then |
| 1475 | * we will check if the disk is in use or not. |
| 1476 | */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1477 | if (del_disk != NULL) { |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1478 | drv = get_drv(del_disk); |
| 1479 | drv->busy_configuring = 1; |
| 1480 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
| 1481 | return_code = deregister_disk(del_disk, drv, 1); |
| 1482 | drv->busy_configuring = 0; |
| 1483 | h->busy_configuring = 0; |
| 1484 | return return_code; |
| 1485 | } else { |
| 1486 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
| 1487 | if (!capable(CAP_SYS_RAWIO)) |
| 1488 | return -EPERM; |
| 1489 | |
| 1490 | ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL); |
| 1491 | if (ld_buff == NULL) |
| 1492 | goto mem_msg; |
| 1493 | |
| 1494 | return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1495 | sizeof(ReportLunData_struct), 0, |
| 1496 | 0, 0, TYPE_CMD); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1497 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1498 | if (return_code == IO_OK) { |
| 1499 | listlength |= |
| 1500 | (0xff & (unsigned int)(ld_buff->LUNListLength[0])) |
| 1501 | << 24; |
| 1502 | listlength |= |
| 1503 | (0xff & (unsigned int)(ld_buff->LUNListLength[1])) |
| 1504 | << 16; |
| 1505 | listlength |= |
| 1506 | (0xff & (unsigned int)(ld_buff->LUNListLength[2])) |
| 1507 | << 8; |
| 1508 | listlength |= |
| 1509 | 0xff & (unsigned int)(ld_buff->LUNListLength[3]); |
| 1510 | } else { /* reading number of logical volumes failed */ |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1511 | printk(KERN_WARNING "cciss: report logical volume" |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1512 | " command failed\n"); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1513 | listlength = 0; |
| 1514 | goto freeret; |
| 1515 | } |
| 1516 | |
| 1517 | num_luns = listlength / 8; /* 8 bytes per entry */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1518 | if (num_luns > CISS_MAX_LUN) { |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1519 | num_luns = CISS_MAX_LUN; |
| 1520 | printk(KERN_WARNING "cciss: more luns configured" |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1521 | " on controller than can be handled by" |
| 1522 | " this driver.\n"); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1523 | } |
| 1524 | |
| 1525 | /* Compare controller drive array to drivers drive array. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1526 | * Check for updates in the drive information and any new drives |
| 1527 | * on the controller. |
| 1528 | */ |
| 1529 | for (i = 0; i < num_luns; i++) { |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1530 | int j; |
| 1531 | |
| 1532 | drv_found = 0; |
| 1533 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1534 | lunid = (0xff & |
| 1535 | (unsigned int)(ld_buff->LUN[i][3])) << 24; |
| 1536 | lunid |= (0xff & |
| 1537 | (unsigned int)(ld_buff->LUN[i][2])) << 16; |
| 1538 | lunid |= (0xff & |
| 1539 | (unsigned int)(ld_buff->LUN[i][1])) << 8; |
| 1540 | lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1541 | |
| 1542 | /* Find if the LUN is already in the drive array |
| 1543 | * of the controller. If so then update its info |
| 1544 | * if not is use. If it does not exist then find |
| 1545 | * the first free index and add it. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1546 | */ |
| 1547 | for (j = 0; j <= h->highest_lun; j++) { |
| 1548 | if (h->drv[j].LunID == lunid) { |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1549 | drv_index = j; |
| 1550 | drv_found = 1; |
| 1551 | } |
| 1552 | } |
| 1553 | |
| 1554 | /* check if the drive was found already in the array */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1555 | if (!drv_found) { |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1556 | drv_index = cciss_find_free_drive_index(ctlr); |
| 1557 | if (drv_index == -1) |
| 1558 | goto freeret; |
| 1559 | |
| 1560 | } |
| 1561 | h->drv[drv_index].LunID = lunid; |
| 1562 | cciss_update_drive_info(ctlr, drv_index); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1563 | } /* end for */ |
| 1564 | } /* end else */ |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1565 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1566 | freeret: |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1567 | kfree(ld_buff); |
| 1568 | h->busy_configuring = 0; |
| 1569 | /* We return -1 here to tell the ACU that we have registered/updated |
| 1570 | * all of the drives that we can and to keep it from calling us |
| 1571 | * additional times. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1572 | */ |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1573 | return -1; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1574 | mem_msg: |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1575 | printk(KERN_ERR "cciss: out of memory\n"); |
| 1576 | goto freeret; |
| 1577 | } |
| 1578 | |
| 1579 | /* This function will deregister the disk and it's queue from the |
| 1580 | * kernel. It must be called with the controller lock held and the |
| 1581 | * drv structures busy_configuring flag set. It's parameters are: |
| 1582 | * |
| 1583 | * disk = This is the disk to be deregistered |
| 1584 | * drv = This is the drive_info_struct associated with the disk to be |
| 1585 | * deregistered. It contains information about the disk used |
| 1586 | * by the driver. |
| 1587 | * clear_all = This flag determines whether or not the disk information |
| 1588 | * is going to be completely cleared out and the highest_lun |
| 1589 | * reset. Sometimes we want to clear out information about |
Bjorn Helgaas | d14c4ab | 2006-06-25 05:49:04 -0700 | [diff] [blame] | 1590 | * the disk in preparation for re-adding it. In this case |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1591 | * the highest_lun should be left unchanged and the LunID |
| 1592 | * should not be cleared. |
| 1593 | */ |
| 1594 | static int deregister_disk(struct gendisk *disk, drive_info_struct *drv, |
| 1595 | int clear_all) |
| 1596 | { |
| 1597 | ctlr_info_t *h = get_host(disk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1598 | |
| 1599 | if (!capable(CAP_SYS_RAWIO)) |
| 1600 | return -EPERM; |
| 1601 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1602 | /* make sure logical volume is NOT is use */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1603 | if (clear_all || (h->gendisk[0] == disk)) { |
| 1604 | if (drv->usage_count > 1) |
| 1605 | return -EBUSY; |
| 1606 | } else if (drv->usage_count > 0) |
| 1607 | return -EBUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1608 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1609 | /* invalidate the devices and deregister the disk. If it is disk |
| 1610 | * zero do not deregister it but just zero out it's values. This |
| 1611 | * allows us to delete disk zero but keep the controller registered. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1612 | */ |
| 1613 | if (h->gendisk[0] != disk) { |
mikem | 6f5a0f7 | 2005-11-18 22:05:36 +0100 | [diff] [blame] | 1614 | if (disk) { |
| 1615 | request_queue_t *q = disk->queue; |
| 1616 | if (disk->flags & GENHD_FL_UP) |
| 1617 | del_gendisk(disk); |
Mike Miller | 2f6331f | 2005-12-12 22:17:14 -0800 | [diff] [blame] | 1618 | if (q) { |
mikem | 6f5a0f7 | 2005-11-18 22:05:36 +0100 | [diff] [blame] | 1619 | blk_cleanup_queue(q); |
Mike Miller | 2f6331f | 2005-12-12 22:17:14 -0800 | [diff] [blame] | 1620 | drv->queue = NULL; |
| 1621 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1622 | } |
| 1623 | } |
| 1624 | |
| 1625 | --h->num_luns; |
| 1626 | /* zero out the disk size info */ |
| 1627 | drv->nr_blocks = 0; |
| 1628 | drv->block_size = 0; |
| 1629 | drv->heads = 0; |
| 1630 | drv->sectors = 0; |
| 1631 | drv->cylinders = 0; |
| 1632 | drv->raid_level = -1; /* This can be used as a flag variable to |
| 1633 | * indicate that this element of the drive |
| 1634 | * array is free. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1635 | */ |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1636 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1637 | if (clear_all) { |
| 1638 | /* check to see if it was the last disk */ |
| 1639 | if (drv == h->drv + h->highest_lun) { |
| 1640 | /* if so, find the new hightest lun */ |
| 1641 | int i, newhighest = -1; |
| 1642 | for (i = 0; i < h->highest_lun; i++) { |
| 1643 | /* if the disk has size > 0, it is available */ |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1644 | if (h->drv[i].heads) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1645 | newhighest = i; |
| 1646 | } |
| 1647 | h->highest_lun = newhighest; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1648 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1649 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1650 | drv->LunID = 0; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1651 | } |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 1652 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1653 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1654 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1655 | static int fill_cmd(CommandList_struct *c, __u8 cmd, int ctlr, void *buff, size_t size, unsigned int use_unit_num, /* 0: address the controller, |
| 1656 | 1: address logical volume log_unit, |
| 1657 | 2: periph device address is scsi3addr */ |
| 1658 | unsigned int log_unit, __u8 page_code, |
| 1659 | unsigned char *scsi3addr, int cmd_type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1660 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1661 | ctlr_info_t *h = hba[ctlr]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1662 | u64bit buff_dma_handle; |
| 1663 | int status = IO_OK; |
| 1664 | |
| 1665 | c->cmd_type = CMD_IOCTL_PEND; |
| 1666 | c->Header.ReplyQueue = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1667 | if (buff != NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1668 | c->Header.SGList = 1; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1669 | c->Header.SGTotal = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1670 | } else { |
| 1671 | c->Header.SGList = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1672 | c->Header.SGTotal = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1673 | } |
| 1674 | c->Header.Tag.lower = c->busaddr; |
| 1675 | |
| 1676 | c->Request.Type.Type = cmd_type; |
| 1677 | if (cmd_type == TYPE_CMD) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1678 | switch (cmd) { |
| 1679 | case CISS_INQUIRY: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1680 | /* If the logical unit number is 0 then, this is going |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1681 | to controller so It's a physical command |
| 1682 | mode = 0 target = 0. So we have nothing to write. |
| 1683 | otherwise, if use_unit_num == 1, |
| 1684 | mode = 1(volume set addressing) target = LUNID |
| 1685 | otherwise, if use_unit_num == 2, |
| 1686 | mode = 0(periph dev addr) target = scsi3addr */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1687 | if (use_unit_num == 1) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1688 | c->Header.LUN.LogDev.VolId = |
| 1689 | h->drv[log_unit].LunID; |
| 1690 | c->Header.LUN.LogDev.Mode = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1691 | } else if (use_unit_num == 2) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1692 | memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, |
| 1693 | 8); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1694 | c->Header.LUN.LogDev.Mode = 0; |
| 1695 | } |
| 1696 | /* are we trying to read a vital product page */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1697 | if (page_code != 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1698 | c->Request.CDB[1] = 0x01; |
| 1699 | c->Request.CDB[2] = page_code; |
| 1700 | } |
| 1701 | c->Request.CDBLen = 6; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1702 | c->Request.Type.Attribute = ATTR_SIMPLE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1703 | c->Request.Type.Direction = XFER_READ; |
| 1704 | c->Request.Timeout = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1705 | c->Request.CDB[0] = CISS_INQUIRY; |
| 1706 | c->Request.CDB[4] = size & 0xFF; |
| 1707 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1708 | case CISS_REPORT_LOG: |
| 1709 | case CISS_REPORT_PHYS: |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1710 | /* Talking to controller so It's a physical command |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1711 | mode = 00 target = 0. Nothing to write. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1712 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1713 | c->Request.CDBLen = 12; |
| 1714 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 1715 | c->Request.Type.Direction = XFER_READ; |
| 1716 | c->Request.Timeout = 0; |
| 1717 | c->Request.CDB[0] = cmd; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1718 | c->Request.CDB[6] = (size >> 24) & 0xFF; //MSB |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1719 | c->Request.CDB[7] = (size >> 16) & 0xFF; |
| 1720 | c->Request.CDB[8] = (size >> 8) & 0xFF; |
| 1721 | c->Request.CDB[9] = size & 0xFF; |
| 1722 | break; |
| 1723 | |
| 1724 | case CCISS_READ_CAPACITY: |
| 1725 | c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID; |
| 1726 | c->Header.LUN.LogDev.Mode = 1; |
| 1727 | c->Request.CDBLen = 10; |
| 1728 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 1729 | c->Request.Type.Direction = XFER_READ; |
| 1730 | c->Request.Timeout = 0; |
| 1731 | c->Request.CDB[0] = cmd; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1732 | break; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 1733 | case CCISS_READ_CAPACITY_16: |
| 1734 | c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID; |
| 1735 | c->Header.LUN.LogDev.Mode = 1; |
| 1736 | c->Request.CDBLen = 16; |
| 1737 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 1738 | c->Request.Type.Direction = XFER_READ; |
| 1739 | c->Request.Timeout = 0; |
| 1740 | c->Request.CDB[0] = cmd; |
| 1741 | c->Request.CDB[1] = 0x10; |
| 1742 | c->Request.CDB[10] = (size >> 24) & 0xFF; |
| 1743 | c->Request.CDB[11] = (size >> 16) & 0xFF; |
| 1744 | c->Request.CDB[12] = (size >> 8) & 0xFF; |
| 1745 | c->Request.CDB[13] = size & 0xFF; |
| 1746 | c->Request.Timeout = 0; |
| 1747 | c->Request.CDB[0] = cmd; |
| 1748 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1749 | case CCISS_CACHE_FLUSH: |
| 1750 | c->Request.CDBLen = 12; |
| 1751 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 1752 | c->Request.Type.Direction = XFER_WRITE; |
| 1753 | c->Request.Timeout = 0; |
| 1754 | c->Request.CDB[0] = BMIC_WRITE; |
| 1755 | c->Request.CDB[6] = BMIC_CACHE_FLUSH; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1756 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1757 | default: |
| 1758 | printk(KERN_WARNING |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1759 | "cciss%d: Unknown Command 0x%c\n", ctlr, cmd); |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 1760 | return IO_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1761 | } |
| 1762 | } else if (cmd_type == TYPE_MSG) { |
| 1763 | switch (cmd) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1764 | case 0: /* ABORT message */ |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 1765 | c->Request.CDBLen = 12; |
| 1766 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 1767 | c->Request.Type.Direction = XFER_WRITE; |
| 1768 | c->Request.Timeout = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1769 | c->Request.CDB[0] = cmd; /* abort */ |
| 1770 | c->Request.CDB[1] = 0; /* abort a command */ |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 1771 | /* buff contains the tag of the command to abort */ |
| 1772 | memcpy(&c->Request.CDB[4], buff, 8); |
| 1773 | break; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1774 | case 1: /* RESET message */ |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 1775 | c->Request.CDBLen = 12; |
| 1776 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 1777 | c->Request.Type.Direction = XFER_WRITE; |
| 1778 | c->Request.Timeout = 0; |
| 1779 | memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB)); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1780 | c->Request.CDB[0] = cmd; /* reset */ |
| 1781 | c->Request.CDB[1] = 0x04; /* reset a LUN */ |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 1782 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1783 | case 3: /* No-Op message */ |
| 1784 | c->Request.CDBLen = 1; |
| 1785 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 1786 | c->Request.Type.Direction = XFER_WRITE; |
| 1787 | c->Request.Timeout = 0; |
| 1788 | c->Request.CDB[0] = cmd; |
| 1789 | break; |
| 1790 | default: |
| 1791 | printk(KERN_WARNING |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1792 | "cciss%d: unknown message type %d\n", ctlr, cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1793 | return IO_ERROR; |
| 1794 | } |
| 1795 | } else { |
| 1796 | printk(KERN_WARNING |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1797 | "cciss%d: unknown command type %d\n", ctlr, cmd_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1798 | return IO_ERROR; |
| 1799 | } |
| 1800 | /* Fill in the scatter gather information */ |
| 1801 | if (size > 0) { |
| 1802 | buff_dma_handle.val = (__u64) pci_map_single(h->pdev, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1803 | buff, size, |
| 1804 | PCI_DMA_BIDIRECTIONAL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1805 | c->SG[0].Addr.lower = buff_dma_handle.val32.lower; |
| 1806 | c->SG[0].Addr.upper = buff_dma_handle.val32.upper; |
| 1807 | c->SG[0].Len = size; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1808 | c->SG[0].Ext = 0; /* we are not chaining */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1809 | } |
| 1810 | return status; |
| 1811 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1812 | |
| 1813 | static int sendcmd_withirq(__u8 cmd, |
| 1814 | int ctlr, |
| 1815 | void *buff, |
| 1816 | size_t size, |
| 1817 | unsigned int use_unit_num, |
| 1818 | unsigned int log_unit, __u8 page_code, int cmd_type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1819 | { |
| 1820 | ctlr_info_t *h = hba[ctlr]; |
| 1821 | CommandList_struct *c; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1822 | u64bit buff_dma_handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1823 | unsigned long flags; |
| 1824 | int return_status; |
Peter Zijlstra | 6e9a473 | 2006-09-30 23:28:10 -0700 | [diff] [blame] | 1825 | DECLARE_COMPLETION_ONSTACK(wait); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1826 | |
| 1827 | if ((c = cmd_alloc(h, 0)) == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1828 | return -ENOMEM; |
| 1829 | return_status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1830 | log_unit, page_code, NULL, cmd_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1831 | if (return_status != IO_OK) { |
| 1832 | cmd_free(h, c, 0); |
| 1833 | return return_status; |
| 1834 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1835 | resend_cmd2: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1836 | c->waiting = &wait; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1837 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1838 | /* Put the request on the tail of the queue and send it */ |
| 1839 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); |
| 1840 | addQ(&h->reqQ, c); |
| 1841 | h->Qdepth++; |
| 1842 | start_io(h); |
| 1843 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1844 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1845 | wait_for_completion(&wait); |
| 1846 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1847 | if (c->err_info->CommandStatus != 0) { /* an error has occurred */ |
| 1848 | switch (c->err_info->CommandStatus) { |
| 1849 | case CMD_TARGET_STATUS: |
| 1850 | printk(KERN_WARNING "cciss: cmd %p has " |
| 1851 | " completed with errors\n", c); |
| 1852 | if (c->err_info->ScsiStatus) { |
| 1853 | printk(KERN_WARNING "cciss: cmd %p " |
| 1854 | "has SCSI Status = %x\n", |
| 1855 | c, c->err_info->ScsiStatus); |
| 1856 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1857 | |
| 1858 | break; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1859 | case CMD_DATA_UNDERRUN: |
| 1860 | case CMD_DATA_OVERRUN: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1861 | /* expected for inquire and report lun commands */ |
| 1862 | break; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1863 | case CMD_INVALID: |
| 1864 | printk(KERN_WARNING "cciss: Cmd %p is " |
| 1865 | "reported invalid\n", c); |
| 1866 | return_status = IO_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1867 | break; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1868 | case CMD_PROTOCOL_ERR: |
| 1869 | printk(KERN_WARNING "cciss: cmd %p has " |
| 1870 | "protocol error \n", c); |
| 1871 | return_status = IO_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1872 | break; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1873 | case CMD_HARDWARE_ERR: |
| 1874 | printk(KERN_WARNING "cciss: cmd %p had " |
| 1875 | " hardware error\n", c); |
| 1876 | return_status = IO_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1877 | break; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1878 | case CMD_CONNECTION_LOST: |
| 1879 | printk(KERN_WARNING "cciss: cmd %p had " |
| 1880 | "connection lost\n", c); |
| 1881 | return_status = IO_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1882 | break; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1883 | case CMD_ABORTED: |
| 1884 | printk(KERN_WARNING "cciss: cmd %p was " |
| 1885 | "aborted\n", c); |
| 1886 | return_status = IO_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1887 | break; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1888 | case CMD_ABORT_FAILED: |
| 1889 | printk(KERN_WARNING "cciss: cmd %p reports " |
| 1890 | "abort failed\n", c); |
| 1891 | return_status = IO_ERROR; |
| 1892 | break; |
| 1893 | case CMD_UNSOLICITED_ABORT: |
| 1894 | printk(KERN_WARNING |
| 1895 | "cciss%d: unsolicited abort %p\n", ctlr, c); |
| 1896 | if (c->retry_count < MAX_CMD_RETRIES) { |
| 1897 | printk(KERN_WARNING |
| 1898 | "cciss%d: retrying %p\n", ctlr, c); |
| 1899 | c->retry_count++; |
| 1900 | /* erase the old error information */ |
| 1901 | memset(c->err_info, 0, |
| 1902 | sizeof(ErrorInfo_struct)); |
| 1903 | return_status = IO_OK; |
| 1904 | INIT_COMPLETION(wait); |
| 1905 | goto resend_cmd2; |
| 1906 | } |
| 1907 | return_status = IO_ERROR; |
| 1908 | break; |
| 1909 | default: |
| 1910 | printk(KERN_WARNING "cciss: cmd %p returned " |
| 1911 | "unknown status %x\n", c, |
| 1912 | c->err_info->CommandStatus); |
| 1913 | return_status = IO_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1914 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1915 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1916 | /* unlock the buffers from DMA */ |
Mike Miller | bb2a37b | 2005-09-13 01:25:24 -0700 | [diff] [blame] | 1917 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
| 1918 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1919 | pci_unmap_single(h->pdev, (dma_addr_t) buff_dma_handle.val, |
| 1920 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1921 | cmd_free(h, c, 0); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1922 | return return_status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1923 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1924 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1925 | static void cciss_geometry_inquiry(int ctlr, int logvol, |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 1926 | int withirq, sector_t total_size, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1927 | unsigned int block_size, |
| 1928 | InquiryData_struct *inq_buff, |
| 1929 | drive_info_struct *drv) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1930 | { |
| 1931 | int return_code; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 1932 | unsigned long t; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 1933 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1934 | memset(inq_buff, 0, sizeof(InquiryData_struct)); |
| 1935 | if (withirq) |
| 1936 | return_code = sendcmd_withirq(CISS_INQUIRY, ctlr, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1937 | inq_buff, sizeof(*inq_buff), 1, |
| 1938 | logvol, 0xC1, TYPE_CMD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1939 | else |
| 1940 | return_code = sendcmd(CISS_INQUIRY, ctlr, inq_buff, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1941 | sizeof(*inq_buff), 1, logvol, 0xC1, NULL, |
| 1942 | TYPE_CMD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1943 | if (return_code == IO_OK) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1944 | if (inq_buff->data_byte[8] == 0xFF) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1945 | printk(KERN_WARNING |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1946 | "cciss: reading geometry failed, volume " |
| 1947 | "does not support reading geometry\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1948 | drv->heads = 255; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1949 | drv->sectors = 32; // Sectors per track |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1950 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1951 | drv->heads = inq_buff->data_byte[6]; |
| 1952 | drv->sectors = inq_buff->data_byte[7]; |
| 1953 | drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8; |
| 1954 | drv->cylinders += inq_buff->data_byte[5]; |
| 1955 | drv->raid_level = inq_buff->data_byte[8]; |
Matthew Wilcox | 3f7705e | 2006-10-21 10:24:19 -0700 | [diff] [blame] | 1956 | } |
| 1957 | drv->block_size = block_size; |
| 1958 | drv->nr_blocks = total_size; |
| 1959 | t = drv->heads * drv->sectors; |
| 1960 | if (t > 1) { |
| 1961 | unsigned rem = sector_div(total_size, t); |
| 1962 | if (rem) |
| 1963 | total_size++; |
| 1964 | drv->cylinders = total_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1965 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1966 | } else { /* Get geometry failed */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1967 | printk(KERN_WARNING "cciss: reading geometry failed\n"); |
| 1968 | } |
Metathronius Galabant | cc088d1 | 2006-09-30 23:27:47 -0700 | [diff] [blame] | 1969 | printk(KERN_INFO " heads=%d, sectors=%d, cylinders=%d\n\n", |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1970 | drv->heads, drv->sectors, drv->cylinders); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1971 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1972 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1973 | static void |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 1974 | 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] | 1975 | unsigned int *block_size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1976 | { |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 1977 | ReadCapdata_struct *buf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1978 | int return_code; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 1979 | buf = kmalloc(sizeof(ReadCapdata_struct), GFP_KERNEL); |
| 1980 | if (buf == NULL) { |
| 1981 | printk(KERN_WARNING "cciss: out of memory\n"); |
| 1982 | return; |
| 1983 | } |
| 1984 | memset(buf, 0, sizeof(ReadCapdata_struct)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1985 | if (withirq) |
| 1986 | return_code = sendcmd_withirq(CCISS_READ_CAPACITY, |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 1987 | ctlr, buf, sizeof(ReadCapdata_struct), |
| 1988 | 1, logvol, 0, TYPE_CMD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1989 | else |
| 1990 | return_code = sendcmd(CCISS_READ_CAPACITY, |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 1991 | ctlr, buf, sizeof(ReadCapdata_struct), |
| 1992 | 1, logvol, 0, NULL, TYPE_CMD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1993 | if (return_code == IO_OK) { |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 1994 | *total_size = be32_to_cpu(*(__u32 *) buf->total_size)+1; |
| 1995 | *block_size = be32_to_cpu(*(__u32 *) buf->block_size); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1996 | } else { /* read capacity command failed */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1997 | printk(KERN_WARNING "cciss: read capacity failed\n"); |
| 1998 | *total_size = 0; |
| 1999 | *block_size = BLOCK_SIZE; |
| 2000 | } |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2001 | if (*total_size != (__u32) 0) |
Randy Dunlap | 7b92aad | 2006-10-28 10:38:40 -0700 | [diff] [blame] | 2002 | printk(KERN_INFO " blocks= %llu block_size= %d\n", |
| 2003 | (unsigned long long)*total_size, *block_size); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2004 | kfree(buf); |
| 2005 | return; |
| 2006 | } |
| 2007 | |
| 2008 | static void |
| 2009 | cciss_read_capacity_16(int ctlr, int logvol, int withirq, sector_t *total_size, unsigned int *block_size) |
| 2010 | { |
| 2011 | ReadCapdata_struct_16 *buf; |
| 2012 | int return_code; |
| 2013 | buf = kmalloc(sizeof(ReadCapdata_struct_16), GFP_KERNEL); |
| 2014 | if (buf == NULL) { |
| 2015 | printk(KERN_WARNING "cciss: out of memory\n"); |
| 2016 | return; |
| 2017 | } |
| 2018 | memset(buf, 0, sizeof(ReadCapdata_struct_16)); |
| 2019 | if (withirq) { |
| 2020 | return_code = sendcmd_withirq(CCISS_READ_CAPACITY_16, |
| 2021 | ctlr, buf, sizeof(ReadCapdata_struct_16), |
| 2022 | 1, logvol, 0, TYPE_CMD); |
| 2023 | } |
| 2024 | else { |
| 2025 | return_code = sendcmd(CCISS_READ_CAPACITY_16, |
| 2026 | ctlr, buf, sizeof(ReadCapdata_struct_16), |
| 2027 | 1, logvol, 0, NULL, TYPE_CMD); |
| 2028 | } |
| 2029 | if (return_code == IO_OK) { |
| 2030 | *total_size = be64_to_cpu(*(__u64 *) buf->total_size)+1; |
| 2031 | *block_size = be32_to_cpu(*(__u32 *) buf->block_size); |
| 2032 | } else { /* read capacity command failed */ |
| 2033 | printk(KERN_WARNING "cciss: read capacity failed\n"); |
| 2034 | *total_size = 0; |
| 2035 | *block_size = BLOCK_SIZE; |
| 2036 | } |
Randy Dunlap | 7b92aad | 2006-10-28 10:38:40 -0700 | [diff] [blame] | 2037 | printk(KERN_INFO " blocks= %llu block_size= %d\n", |
| 2038 | (unsigned long long)*total_size, *block_size); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2039 | kfree(buf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2040 | return; |
| 2041 | } |
| 2042 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2043 | static int cciss_revalidate(struct gendisk *disk) |
| 2044 | { |
| 2045 | ctlr_info_t *h = get_host(disk); |
| 2046 | drive_info_struct *drv = get_drv(disk); |
| 2047 | int logvol; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2048 | int FOUND = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2049 | unsigned int block_size; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2050 | sector_t total_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2051 | InquiryData_struct *inq_buff = NULL; |
| 2052 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2053 | for (logvol = 0; logvol < CISS_MAX_LUN; logvol++) { |
| 2054 | if (h->drv[logvol].LunID == drv->LunID) { |
| 2055 | FOUND = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2056 | break; |
| 2057 | } |
| 2058 | } |
| 2059 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2060 | if (!FOUND) |
| 2061 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2062 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2063 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
| 2064 | if (inq_buff == NULL) { |
| 2065 | printk(KERN_WARNING "cciss: out of memory\n"); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2066 | return 1; |
| 2067 | } |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2068 | if (h->cciss_read == CCISS_READ_10) { |
| 2069 | cciss_read_capacity(h->ctlr, logvol, 1, |
| 2070 | &total_size, &block_size); |
| 2071 | } else { |
| 2072 | cciss_read_capacity_16(h->ctlr, logvol, 1, |
| 2073 | &total_size, &block_size); |
| 2074 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2075 | cciss_geometry_inquiry(h->ctlr, logvol, 1, total_size, block_size, |
| 2076 | inq_buff, drv); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2077 | |
Mike Miller | ad2b931 | 2005-07-28 01:07:31 -0700 | [diff] [blame] | 2078 | blk_queue_hardsect_size(drv->queue, drv->block_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2079 | set_capacity(disk, drv->nr_blocks); |
| 2080 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2081 | kfree(inq_buff); |
| 2082 | return 0; |
| 2083 | } |
| 2084 | |
| 2085 | /* |
| 2086 | * Wait polling for a command to complete. |
| 2087 | * The memory mapped FIFO is polled for the completion. |
| 2088 | * Used only at init time, interrupts from the HBA are disabled. |
| 2089 | */ |
| 2090 | static unsigned long pollcomplete(int ctlr) |
| 2091 | { |
| 2092 | unsigned long done; |
| 2093 | int i; |
| 2094 | |
| 2095 | /* Wait (up to 20 seconds) for a command to complete */ |
| 2096 | |
| 2097 | for (i = 20 * HZ; i > 0; i--) { |
| 2098 | done = hba[ctlr]->access.command_completed(hba[ctlr]); |
Nishanth Aravamudan | 86e8486 | 2005-09-10 00:27:28 -0700 | [diff] [blame] | 2099 | if (done == FIFO_EMPTY) |
| 2100 | schedule_timeout_uninterruptible(1); |
| 2101 | else |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 2102 | return done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2103 | } |
| 2104 | /* Invalid address to tell caller we ran out of time */ |
| 2105 | return 1; |
| 2106 | } |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2107 | |
| 2108 | static int add_sendcmd_reject(__u8 cmd, int ctlr, unsigned long complete) |
| 2109 | { |
| 2110 | /* We get in here if sendcmd() is polling for completions |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2111 | and gets some command back that it wasn't expecting -- |
| 2112 | something other than that which it just sent down. |
| 2113 | Ordinarily, that shouldn't happen, but it can happen when |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2114 | the scsi tape stuff gets into error handling mode, and |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2115 | starts using sendcmd() to try to abort commands and |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2116 | reset tape drives. In that case, sendcmd may pick up |
| 2117 | completions of commands that were sent to logical drives |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2118 | through the block i/o system, or cciss ioctls completing, etc. |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2119 | In that case, we need to save those completions for later |
| 2120 | processing by the interrupt handler. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2121 | */ |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2122 | |
| 2123 | #ifdef CONFIG_CISS_SCSI_TAPE |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2124 | struct sendcmd_reject_list *srl = &hba[ctlr]->scsi_rejects; |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2125 | |
| 2126 | /* If it's not the scsi tape stuff doing error handling, (abort */ |
| 2127 | /* or reset) then we don't expect anything weird. */ |
| 2128 | if (cmd != CCISS_RESET_MSG && cmd != CCISS_ABORT_MSG) { |
| 2129 | #endif |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2130 | printk(KERN_WARNING "cciss cciss%d: SendCmd " |
| 2131 | "Invalid command list address returned! (%lx)\n", |
| 2132 | ctlr, complete); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2133 | /* not much we can do. */ |
| 2134 | #ifdef CONFIG_CISS_SCSI_TAPE |
| 2135 | return 1; |
| 2136 | } |
| 2137 | |
| 2138 | /* We've sent down an abort or reset, but something else |
| 2139 | has completed */ |
| 2140 | if (srl->ncompletions >= (NR_CMDS + 2)) { |
| 2141 | /* Uh oh. No room to save it for later... */ |
| 2142 | printk(KERN_WARNING "cciss%d: Sendcmd: Invalid command addr, " |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2143 | "reject list overflow, command lost!\n", ctlr); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2144 | return 1; |
| 2145 | } |
| 2146 | /* Save it for later */ |
| 2147 | srl->complete[srl->ncompletions] = complete; |
| 2148 | srl->ncompletions++; |
| 2149 | #endif |
| 2150 | return 0; |
| 2151 | } |
| 2152 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2153 | /* |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2154 | * Send a command to the controller, and wait for it to complete. |
| 2155 | * Only used at init time. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2156 | */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2157 | static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size, unsigned int use_unit_num, /* 0: address the controller, |
| 2158 | 1: address logical volume log_unit, |
| 2159 | 2: periph device address is scsi3addr */ |
| 2160 | unsigned int log_unit, |
| 2161 | __u8 page_code, unsigned char *scsi3addr, int cmd_type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2162 | { |
| 2163 | CommandList_struct *c; |
| 2164 | int i; |
| 2165 | unsigned long complete; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2166 | ctlr_info_t *info_p = hba[ctlr]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2167 | u64bit buff_dma_handle; |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2168 | int status, done = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2169 | |
| 2170 | if ((c = cmd_alloc(info_p, 1)) == NULL) { |
| 2171 | printk(KERN_WARNING "cciss: unable to get memory"); |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 2172 | return IO_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2173 | } |
| 2174 | status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2175 | log_unit, page_code, scsi3addr, cmd_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2176 | if (status != IO_OK) { |
| 2177 | cmd_free(info_p, c, 1); |
| 2178 | return status; |
| 2179 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2180 | resend_cmd1: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2181 | /* |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2182 | * Disable interrupt |
| 2183 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2184 | #ifdef CCISS_DEBUG |
| 2185 | printk(KERN_DEBUG "cciss: turning intr off\n"); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2186 | #endif /* CCISS_DEBUG */ |
| 2187 | info_p->access.set_intr_mask(info_p, CCISS_INTR_OFF); |
| 2188 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2189 | /* Make sure there is room in the command FIFO */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2190 | /* Actually it should be completely empty at this time */ |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2191 | /* unless we are in here doing error handling for the scsi */ |
| 2192 | /* tape side of the driver. */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2193 | for (i = 200000; i > 0; i--) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2194 | /* if fifo isn't full go */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2195 | if (!(info_p->access.fifo_full(info_p))) { |
| 2196 | |
| 2197 | break; |
| 2198 | } |
| 2199 | udelay(10); |
| 2200 | printk(KERN_WARNING "cciss cciss%d: SendCmd FIFO full," |
| 2201 | " waiting!\n", ctlr); |
| 2202 | } |
| 2203 | /* |
| 2204 | * Send the cmd |
| 2205 | */ |
| 2206 | info_p->access.submit_command(info_p, c); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2207 | done = 0; |
| 2208 | do { |
| 2209 | complete = pollcomplete(ctlr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2210 | |
| 2211 | #ifdef CCISS_DEBUG |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2212 | printk(KERN_DEBUG "cciss: command completed\n"); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2213 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2214 | |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2215 | if (complete == 1) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2216 | printk(KERN_WARNING |
| 2217 | "cciss cciss%d: SendCmd Timeout out, " |
| 2218 | "No command list address returned!\n", ctlr); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2219 | status = IO_ERROR; |
| 2220 | done = 1; |
| 2221 | break; |
| 2222 | } |
| 2223 | |
| 2224 | /* This will need to change for direct lookup completions */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2225 | if ((complete & CISS_ERROR_BIT) |
| 2226 | && (complete & ~CISS_ERROR_BIT) == c->busaddr) { |
| 2227 | /* if data overrun or underun on Report command |
| 2228 | ignore it |
| 2229 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2230 | if (((c->Request.CDB[0] == CISS_REPORT_LOG) || |
| 2231 | (c->Request.CDB[0] == CISS_REPORT_PHYS) || |
| 2232 | (c->Request.CDB[0] == CISS_INQUIRY)) && |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2233 | ((c->err_info->CommandStatus == |
| 2234 | CMD_DATA_OVERRUN) || |
| 2235 | (c->err_info->CommandStatus == CMD_DATA_UNDERRUN) |
| 2236 | )) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2237 | complete = c->busaddr; |
| 2238 | } else { |
| 2239 | if (c->err_info->CommandStatus == |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2240 | CMD_UNSOLICITED_ABORT) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2241 | printk(KERN_WARNING "cciss%d: " |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2242 | "unsolicited abort %p\n", |
| 2243 | ctlr, c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2244 | if (c->retry_count < MAX_CMD_RETRIES) { |
| 2245 | printk(KERN_WARNING |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2246 | "cciss%d: retrying %p\n", |
| 2247 | ctlr, c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2248 | c->retry_count++; |
| 2249 | /* erase the old error */ |
| 2250 | /* information */ |
| 2251 | memset(c->err_info, 0, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2252 | sizeof |
| 2253 | (ErrorInfo_struct)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2254 | goto resend_cmd1; |
| 2255 | } else { |
| 2256 | printk(KERN_WARNING |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2257 | "cciss%d: retried %p too " |
| 2258 | "many times\n", ctlr, c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2259 | status = IO_ERROR; |
| 2260 | goto cleanup1; |
| 2261 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2262 | } else if (c->err_info->CommandStatus == |
| 2263 | CMD_UNABORTABLE) { |
| 2264 | printk(KERN_WARNING |
| 2265 | "cciss%d: command could not be aborted.\n", |
| 2266 | ctlr); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2267 | status = IO_ERROR; |
| 2268 | goto cleanup1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2269 | } |
| 2270 | printk(KERN_WARNING "ciss ciss%d: sendcmd" |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2271 | " Error %x \n", ctlr, |
| 2272 | c->err_info->CommandStatus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2273 | printk(KERN_WARNING "ciss ciss%d: sendcmd" |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2274 | " offensive info\n" |
| 2275 | " size %x\n num %x value %x\n", |
| 2276 | ctlr, |
| 2277 | c->err_info->MoreErrInfo.Invalid_Cmd. |
| 2278 | offense_size, |
| 2279 | c->err_info->MoreErrInfo.Invalid_Cmd. |
| 2280 | offense_num, |
| 2281 | c->err_info->MoreErrInfo.Invalid_Cmd. |
| 2282 | offense_value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2283 | status = IO_ERROR; |
| 2284 | goto cleanup1; |
| 2285 | } |
| 2286 | } |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2287 | /* This will need changing for direct lookup completions */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2288 | if (complete != c->busaddr) { |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2289 | if (add_sendcmd_reject(cmd, ctlr, complete) != 0) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2290 | BUG(); /* we are pretty much hosed if we get here. */ |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2291 | } |
| 2292 | continue; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2293 | } else |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2294 | done = 1; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2295 | } while (!done); |
| 2296 | |
| 2297 | cleanup1: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2298 | /* unlock the data buffer from DMA */ |
Mike Miller | bb2a37b | 2005-09-13 01:25:24 -0700 | [diff] [blame] | 2299 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
| 2300 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2301 | pci_unmap_single(info_p->pdev, (dma_addr_t) buff_dma_handle.val, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2302 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2303 | #ifdef CONFIG_CISS_SCSI_TAPE |
| 2304 | /* if we saved some commands for later, process them now. */ |
| 2305 | if (info_p->scsi_rejects.ncompletions > 0) |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 2306 | do_cciss_intr(0, info_p); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2307 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2308 | cmd_free(info_p, c, 1); |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 2309 | return status; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2310 | } |
| 2311 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2312 | /* |
| 2313 | * Map (physical) PCI mem into (virtual) kernel space |
| 2314 | */ |
| 2315 | static void __iomem *remap_pci_mem(ulong base, ulong size) |
| 2316 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2317 | ulong page_base = ((ulong) base) & PAGE_MASK; |
| 2318 | ulong page_offs = ((ulong) base) - page_base; |
| 2319 | void __iomem *page_remapped = ioremap(page_base, page_offs + size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2320 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2321 | return page_remapped ? (page_remapped + page_offs) : NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2322 | } |
| 2323 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2324 | /* |
| 2325 | * Takes jobs of the Q and sends them to the hardware, then puts it on |
| 2326 | * the Q to wait for completion. |
| 2327 | */ |
| 2328 | static void start_io(ctlr_info_t *h) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2329 | { |
| 2330 | CommandList_struct *c; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2331 | |
| 2332 | while ((c = h->reqQ) != NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2333 | /* can't do anything if fifo is full */ |
| 2334 | if ((h->access.fifo_full(h))) { |
| 2335 | printk(KERN_WARNING "cciss: fifo full\n"); |
| 2336 | break; |
| 2337 | } |
| 2338 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2339 | /* Get the first entry from the Request Q */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2340 | removeQ(&(h->reqQ), c); |
| 2341 | h->Qdepth--; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2342 | |
| 2343 | /* Tell the controller execute command */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2344 | h->access.submit_command(h, c); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2345 | |
| 2346 | /* Put job onto the completed Q */ |
| 2347 | addQ(&(h->cmpQ), c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2348 | } |
| 2349 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2350 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2351 | /* Assumes that CCISS_LOCK(h->ctlr) is held. */ |
| 2352 | /* Zeros out the error record and then resends the command back */ |
| 2353 | /* to the controller */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2354 | 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] | 2355 | { |
| 2356 | /* erase the old error information */ |
| 2357 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); |
| 2358 | |
| 2359 | /* add it to software queue and then send it to the controller */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2360 | addQ(&(h->reqQ), c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2361 | h->Qdepth++; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2362 | if (h->Qdepth > h->maxQsinceinit) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2363 | h->maxQsinceinit = h->Qdepth; |
| 2364 | |
| 2365 | start_io(h); |
| 2366 | } |
Jens Axboe | a9925a0 | 2006-01-09 16:04:06 +0100 | [diff] [blame] | 2367 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2368 | /* 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] | 2369 | * buffers for the completed job. Note that this function does not need |
| 2370 | * to hold the hba/queue lock. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2371 | */ |
| 2372 | static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd, |
| 2373 | int timeout) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2374 | { |
| 2375 | int status = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2376 | int retry_cmd = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2377 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2378 | if (timeout) |
| 2379 | status = 0; |
| 2380 | |
| 2381 | if (cmd->err_info->CommandStatus != 0) { /* an error has occurred */ |
| 2382 | switch (cmd->err_info->CommandStatus) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2383 | unsigned char sense_key; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2384 | case CMD_TARGET_STATUS: |
| 2385 | status = 0; |
| 2386 | |
| 2387 | if (cmd->err_info->ScsiStatus == 0x02) { |
| 2388 | printk(KERN_WARNING "cciss: cmd %p " |
| 2389 | "has CHECK CONDITION " |
| 2390 | " byte 2 = 0x%x\n", cmd, |
| 2391 | cmd->err_info->SenseInfo[2] |
| 2392 | ); |
| 2393 | /* check the sense key */ |
| 2394 | sense_key = 0xf & cmd->err_info->SenseInfo[2]; |
| 2395 | /* no status or recovered error */ |
| 2396 | if ((sense_key == 0x0) || (sense_key == 0x1)) { |
| 2397 | status = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2398 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2399 | } else { |
| 2400 | printk(KERN_WARNING "cciss: cmd %p " |
| 2401 | "has SCSI Status 0x%x\n", |
| 2402 | cmd, cmd->err_info->ScsiStatus); |
| 2403 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2404 | break; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2405 | case CMD_DATA_UNDERRUN: |
| 2406 | printk(KERN_WARNING "cciss: cmd %p has" |
| 2407 | " completed with data underrun " |
| 2408 | "reported\n", cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2409 | break; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2410 | case CMD_DATA_OVERRUN: |
| 2411 | printk(KERN_WARNING "cciss: cmd %p has" |
| 2412 | " completed with data overrun " |
| 2413 | "reported\n", cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2414 | break; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2415 | case CMD_INVALID: |
| 2416 | printk(KERN_WARNING "cciss: cmd %p is " |
| 2417 | "reported invalid\n", cmd); |
| 2418 | status = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2419 | break; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2420 | case CMD_PROTOCOL_ERR: |
| 2421 | printk(KERN_WARNING "cciss: cmd %p has " |
| 2422 | "protocol error \n", cmd); |
| 2423 | status = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2424 | break; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2425 | case CMD_HARDWARE_ERR: |
| 2426 | printk(KERN_WARNING "cciss: cmd %p had " |
| 2427 | " hardware error\n", cmd); |
| 2428 | status = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2429 | break; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2430 | case CMD_CONNECTION_LOST: |
| 2431 | printk(KERN_WARNING "cciss: cmd %p had " |
| 2432 | "connection lost\n", cmd); |
| 2433 | status = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2434 | break; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2435 | case CMD_ABORTED: |
| 2436 | printk(KERN_WARNING "cciss: cmd %p was " |
| 2437 | "aborted\n", cmd); |
| 2438 | status = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2439 | break; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2440 | case CMD_ABORT_FAILED: |
| 2441 | printk(KERN_WARNING "cciss: cmd %p reports " |
| 2442 | "abort failed\n", cmd); |
| 2443 | status = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2444 | break; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2445 | case CMD_UNSOLICITED_ABORT: |
| 2446 | printk(KERN_WARNING "cciss%d: unsolicited " |
| 2447 | "abort %p\n", h->ctlr, cmd); |
| 2448 | if (cmd->retry_count < MAX_CMD_RETRIES) { |
| 2449 | retry_cmd = 1; |
| 2450 | printk(KERN_WARNING |
| 2451 | "cciss%d: retrying %p\n", h->ctlr, cmd); |
| 2452 | cmd->retry_count++; |
| 2453 | } else |
| 2454 | printk(KERN_WARNING |
| 2455 | "cciss%d: %p retried too " |
| 2456 | "many times\n", h->ctlr, cmd); |
| 2457 | status = 0; |
| 2458 | break; |
| 2459 | case CMD_TIMEOUT: |
| 2460 | printk(KERN_WARNING "cciss: cmd %p timedout\n", cmd); |
| 2461 | status = 0; |
| 2462 | break; |
| 2463 | default: |
| 2464 | printk(KERN_WARNING "cciss: cmd %p returned " |
| 2465 | "unknown status %x\n", cmd, |
| 2466 | cmd->err_info->CommandStatus); |
| 2467 | status = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2468 | } |
| 2469 | } |
| 2470 | /* We need to return this command */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2471 | if (retry_cmd) { |
| 2472 | resend_cciss_cmd(h, cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2473 | return; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2474 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2475 | |
Jens Axboe | a9925a0 | 2006-01-09 16:04:06 +0100 | [diff] [blame] | 2476 | cmd->rq->completion_data = cmd; |
| 2477 | cmd->rq->errors = status; |
Jens Axboe | 2056a78 | 2006-03-23 20:00:26 +0100 | [diff] [blame] | 2478 | blk_add_trace_rq(cmd->rq->q, cmd->rq, BLK_TA_COMPLETE); |
Jens Axboe | a9925a0 | 2006-01-09 16:04:06 +0100 | [diff] [blame] | 2479 | blk_complete_request(cmd->rq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2480 | } |
| 2481 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2482 | /* |
| 2483 | * Get a request and submit it to the controller. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2484 | */ |
| 2485 | static void do_cciss_request(request_queue_t *q) |
| 2486 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2487 | ctlr_info_t *h = q->queuedata; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2488 | CommandList_struct *c; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2489 | sector_t start_blk; |
| 2490 | int seg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2491 | struct request *creq; |
| 2492 | u64bit temp64; |
| 2493 | struct scatterlist tmp_sg[MAXSGENTRIES]; |
| 2494 | drive_info_struct *drv; |
| 2495 | int i, dir; |
| 2496 | |
| 2497 | /* We call start_io here in case there is a command waiting on the |
| 2498 | * queue that has not been sent. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2499 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2500 | if (blk_queue_plugged(q)) |
| 2501 | goto startio; |
| 2502 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2503 | queue: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2504 | creq = elv_next_request(q); |
| 2505 | if (!creq) |
| 2506 | goto startio; |
| 2507 | |
Eric Sesterhenn | 089fe1b | 2006-03-24 18:50:27 +0100 | [diff] [blame] | 2508 | BUG_ON(creq->nr_phys_segments > MAXSGENTRIES); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2509 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2510 | if ((c = cmd_alloc(h, 1)) == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2511 | goto full; |
| 2512 | |
| 2513 | blkdev_dequeue_request(creq); |
| 2514 | |
| 2515 | spin_unlock_irq(q->queue_lock); |
| 2516 | |
| 2517 | c->cmd_type = CMD_RWREQ; |
| 2518 | c->rq = creq; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2519 | |
| 2520 | /* fill in the request */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2521 | drv = creq->rq_disk->private_data; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2522 | c->Header.ReplyQueue = 0; // unused in simple mode |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2523 | /* got command from pool, so use the command block index instead */ |
| 2524 | /* for direct lookups. */ |
| 2525 | /* The first 2 bits are reserved for controller error reporting. */ |
| 2526 | c->Header.Tag.lower = (c->cmdindex << 3); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2527 | c->Header.Tag.lower |= 0x04; /* flag for direct lookup. */ |
| 2528 | c->Header.LUN.LogDev.VolId = drv->LunID; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2529 | c->Header.LUN.LogDev.Mode = 1; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2530 | c->Request.CDBLen = 10; // 12 byte commands not in FW yet; |
| 2531 | c->Request.Type.Type = TYPE_CMD; // It is a command. |
| 2532 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2533 | c->Request.Type.Direction = |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2534 | (rq_data_dir(creq) == READ) ? h->cciss_read : h->cciss_write; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2535 | c->Request.Timeout = 0; // Don't time out |
| 2536 | c->Request.CDB[0] = |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2537 | (rq_data_dir(creq) == READ) ? h->cciss_read : h->cciss_write; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2538 | start_blk = creq->sector; |
| 2539 | #ifdef CCISS_DEBUG |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2540 | printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n", (int)creq->sector, |
| 2541 | (int)creq->nr_sectors); |
| 2542 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2543 | |
| 2544 | seg = blk_rq_map_sg(q, creq, tmp_sg); |
| 2545 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2546 | /* get the DMA records for the setup */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2547 | if (c->Request.Type.Direction == XFER_READ) |
| 2548 | dir = PCI_DMA_FROMDEVICE; |
| 2549 | else |
| 2550 | dir = PCI_DMA_TODEVICE; |
| 2551 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2552 | for (i = 0; i < seg; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2553 | c->SG[i].Len = tmp_sg[i].length; |
| 2554 | temp64.val = (__u64) pci_map_page(h->pdev, tmp_sg[i].page, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2555 | tmp_sg[i].offset, |
| 2556 | tmp_sg[i].length, dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2557 | c->SG[i].Addr.lower = temp64.val32.lower; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2558 | c->SG[i].Addr.upper = temp64.val32.upper; |
| 2559 | c->SG[i].Ext = 0; // we are not chaining |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2560 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2561 | /* track how many SG entries we are using */ |
| 2562 | if (seg > h->maxSG) |
| 2563 | h->maxSG = seg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2564 | |
| 2565 | #ifdef CCISS_DEBUG |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2566 | printk(KERN_DEBUG "cciss: Submitting %d sectors in %d segments\n", |
| 2567 | creq->nr_sectors, seg); |
| 2568 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2569 | |
| 2570 | c->Header.SGList = c->Header.SGTotal = seg; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2571 | if(h->cciss_read == CCISS_READ_10) { |
| 2572 | c->Request.CDB[1] = 0; |
| 2573 | c->Request.CDB[2] = (start_blk >> 24) & 0xff; //MSB |
| 2574 | c->Request.CDB[3] = (start_blk >> 16) & 0xff; |
| 2575 | c->Request.CDB[4] = (start_blk >> 8) & 0xff; |
| 2576 | c->Request.CDB[5] = start_blk & 0xff; |
| 2577 | c->Request.CDB[6] = 0; // (sect >> 24) & 0xff; MSB |
| 2578 | c->Request.CDB[7] = (creq->nr_sectors >> 8) & 0xff; |
| 2579 | c->Request.CDB[8] = creq->nr_sectors & 0xff; |
| 2580 | c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0; |
| 2581 | } else { |
| 2582 | c->Request.CDBLen = 16; |
| 2583 | c->Request.CDB[1]= 0; |
| 2584 | c->Request.CDB[2]= (start_blk >> 56) & 0xff; //MSB |
| 2585 | c->Request.CDB[3]= (start_blk >> 48) & 0xff; |
| 2586 | c->Request.CDB[4]= (start_blk >> 40) & 0xff; |
| 2587 | c->Request.CDB[5]= (start_blk >> 32) & 0xff; |
| 2588 | c->Request.CDB[6]= (start_blk >> 24) & 0xff; |
| 2589 | c->Request.CDB[7]= (start_blk >> 16) & 0xff; |
| 2590 | c->Request.CDB[8]= (start_blk >> 8) & 0xff; |
| 2591 | c->Request.CDB[9]= start_blk & 0xff; |
| 2592 | c->Request.CDB[10]= (creq->nr_sectors >> 24) & 0xff; |
| 2593 | c->Request.CDB[11]= (creq->nr_sectors >> 16) & 0xff; |
| 2594 | c->Request.CDB[12]= (creq->nr_sectors >> 8) & 0xff; |
| 2595 | c->Request.CDB[13]= creq->nr_sectors & 0xff; |
| 2596 | c->Request.CDB[14] = c->Request.CDB[15] = 0; |
| 2597 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2598 | |
| 2599 | spin_lock_irq(q->queue_lock); |
| 2600 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2601 | addQ(&(h->reqQ), c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2602 | h->Qdepth++; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2603 | if (h->Qdepth > h->maxQsinceinit) |
| 2604 | h->maxQsinceinit = h->Qdepth; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2605 | |
| 2606 | goto queue; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2607 | full: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2608 | blk_stop_queue(q); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2609 | startio: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2610 | /* We will already have the driver lock here so not need |
| 2611 | * to lock it. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2612 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2613 | start_io(h); |
| 2614 | } |
| 2615 | |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2616 | static inline unsigned long get_next_completion(ctlr_info_t *h) |
| 2617 | { |
| 2618 | #ifdef CONFIG_CISS_SCSI_TAPE |
| 2619 | /* Any rejects from sendcmd() lying around? Process them first */ |
| 2620 | if (h->scsi_rejects.ncompletions == 0) |
| 2621 | return h->access.command_completed(h); |
| 2622 | else { |
| 2623 | struct sendcmd_reject_list *srl; |
| 2624 | int n; |
| 2625 | srl = &h->scsi_rejects; |
| 2626 | n = --srl->ncompletions; |
| 2627 | /* printk("cciss%d: processing saved reject\n", h->ctlr); */ |
| 2628 | printk("p"); |
| 2629 | return srl->complete[n]; |
| 2630 | } |
| 2631 | #else |
| 2632 | return h->access.command_completed(h); |
| 2633 | #endif |
| 2634 | } |
| 2635 | |
| 2636 | static inline int interrupt_pending(ctlr_info_t *h) |
| 2637 | { |
| 2638 | #ifdef CONFIG_CISS_SCSI_TAPE |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2639 | return (h->access.intr_pending(h) |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2640 | || (h->scsi_rejects.ncompletions > 0)); |
| 2641 | #else |
| 2642 | return h->access.intr_pending(h); |
| 2643 | #endif |
| 2644 | } |
| 2645 | |
| 2646 | static inline long interrupt_not_for_us(ctlr_info_t *h) |
| 2647 | { |
| 2648 | #ifdef CONFIG_CISS_SCSI_TAPE |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2649 | return (((h->access.intr_pending(h) == 0) || |
| 2650 | (h->interrupts_enabled == 0)) |
| 2651 | && (h->scsi_rejects.ncompletions == 0)); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2652 | #else |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2653 | return (((h->access.intr_pending(h) == 0) || |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2654 | (h->interrupts_enabled == 0))); |
| 2655 | #endif |
| 2656 | } |
| 2657 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 2658 | static irqreturn_t do_cciss_intr(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2659 | { |
| 2660 | ctlr_info_t *h = dev_id; |
| 2661 | CommandList_struct *c; |
| 2662 | unsigned long flags; |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2663 | __u32 a, a1, a2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2664 | |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2665 | if (interrupt_not_for_us(h)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2666 | return IRQ_NONE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2667 | /* |
| 2668 | * If there are completed commands in the completion queue, |
| 2669 | * we had better do something about it. |
| 2670 | */ |
| 2671 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2672 | while (interrupt_pending(h)) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2673 | while ((a = get_next_completion(h)) != FIFO_EMPTY) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2674 | a1 = a; |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2675 | if ((a & 0x04)) { |
| 2676 | a2 = (a >> 3); |
| 2677 | if (a2 >= NR_CMDS) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2678 | printk(KERN_WARNING |
| 2679 | "cciss: controller cciss%d failed, stopping.\n", |
| 2680 | h->ctlr); |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2681 | fail_all_cmds(h->ctlr); |
| 2682 | return IRQ_HANDLED; |
| 2683 | } |
| 2684 | |
| 2685 | c = h->cmd_pool + a2; |
| 2686 | a = c->busaddr; |
| 2687 | |
| 2688 | } else { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2689 | a &= ~3; |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2690 | if ((c = h->cmpQ) == NULL) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2691 | printk(KERN_WARNING |
| 2692 | "cciss: Completion of %08x ignored\n", |
| 2693 | a1); |
| 2694 | continue; |
| 2695 | } |
| 2696 | while (c->busaddr != a) { |
| 2697 | c = c->next; |
| 2698 | if (c == h->cmpQ) |
| 2699 | break; |
| 2700 | } |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2701 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2702 | /* |
| 2703 | * If we've found the command, take it off the |
| 2704 | * completion Q and free it |
| 2705 | */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2706 | if (c->busaddr == a) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2707 | removeQ(&h->cmpQ, c); |
| 2708 | if (c->cmd_type == CMD_RWREQ) { |
| 2709 | complete_command(h, c, 0); |
| 2710 | } else if (c->cmd_type == CMD_IOCTL_PEND) { |
| 2711 | complete(c->waiting); |
| 2712 | } |
| 2713 | # ifdef CONFIG_CISS_SCSI_TAPE |
| 2714 | else if (c->cmd_type == CMD_SCSI) |
| 2715 | complete_scsi_command(c, 0, a1); |
| 2716 | # endif |
| 2717 | continue; |
| 2718 | } |
| 2719 | } |
| 2720 | } |
| 2721 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2722 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
| 2723 | return IRQ_HANDLED; |
| 2724 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2725 | |
| 2726 | /* |
Bjorn Helgaas | d14c4ab | 2006-06-25 05:49:04 -0700 | [diff] [blame] | 2727 | * We cannot read the structure directly, for portability we must use |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2728 | * the io functions. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2729 | * This is for debug only. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2730 | */ |
| 2731 | #ifdef CCISS_DEBUG |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2732 | static void print_cfg_table(CfgTable_struct *tb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2733 | { |
| 2734 | int i; |
| 2735 | char temp_name[17]; |
| 2736 | |
| 2737 | printk("Controller Configuration information\n"); |
| 2738 | printk("------------------------------------\n"); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2739 | for (i = 0; i < 4; i++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2740 | temp_name[i] = readb(&(tb->Signature[i])); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2741 | temp_name[4] = '\0'; |
| 2742 | printk(" Signature = %s\n", temp_name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2743 | printk(" Spec Number = %d\n", readl(&(tb->SpecValence))); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2744 | printk(" Transport methods supported = 0x%x\n", |
| 2745 | readl(&(tb->TransportSupport))); |
| 2746 | printk(" Transport methods active = 0x%x\n", |
| 2747 | readl(&(tb->TransportActive))); |
| 2748 | printk(" Requested transport Method = 0x%x\n", |
| 2749 | readl(&(tb->HostWrite.TransportRequest))); |
Bjorn Helgaas | d14c4ab | 2006-06-25 05:49:04 -0700 | [diff] [blame] | 2750 | printk(" Coalesce Interrupt Delay = 0x%x\n", |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2751 | readl(&(tb->HostWrite.CoalIntDelay))); |
Bjorn Helgaas | d14c4ab | 2006-06-25 05:49:04 -0700 | [diff] [blame] | 2752 | printk(" Coalesce Interrupt Count = 0x%x\n", |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2753 | readl(&(tb->HostWrite.CoalIntCount))); |
| 2754 | printk(" Max outstanding commands = 0x%d\n", |
| 2755 | readl(&(tb->CmdsOutMax))); |
| 2756 | printk(" Bus Types = 0x%x\n", readl(&(tb->BusTypes))); |
| 2757 | for (i = 0; i < 16; i++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2758 | temp_name[i] = readb(&(tb->ServerName[i])); |
| 2759 | temp_name[16] = '\0'; |
| 2760 | printk(" Server Name = %s\n", temp_name); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2761 | printk(" Heartbeat Counter = 0x%x\n\n\n", readl(&(tb->HeartBeat))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2762 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2763 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2764 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2765 | 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] | 2766 | { |
| 2767 | int i, offset, mem_type, bar_type; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2768 | if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2769 | return 0; |
| 2770 | offset = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2771 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { |
| 2772 | bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2773 | if (bar_type == PCI_BASE_ADDRESS_SPACE_IO) |
| 2774 | offset += 4; |
| 2775 | else { |
| 2776 | mem_type = pci_resource_flags(pdev, i) & |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2777 | PCI_BASE_ADDRESS_MEM_TYPE_MASK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2778 | switch (mem_type) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2779 | case PCI_BASE_ADDRESS_MEM_TYPE_32: |
| 2780 | case PCI_BASE_ADDRESS_MEM_TYPE_1M: |
| 2781 | offset += 4; /* 32 bit */ |
| 2782 | break; |
| 2783 | case PCI_BASE_ADDRESS_MEM_TYPE_64: |
| 2784 | offset += 8; |
| 2785 | break; |
| 2786 | default: /* reserved in PCI 2.2 */ |
| 2787 | printk(KERN_WARNING |
| 2788 | "Base address is invalid\n"); |
| 2789 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2790 | break; |
| 2791 | } |
| 2792 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2793 | if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0) |
| 2794 | return i + 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2795 | } |
| 2796 | return -1; |
| 2797 | } |
| 2798 | |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 2799 | /* If MSI/MSI-X is supported by the kernel we will try to enable it on |
| 2800 | * controllers that are capable. If not, we use IO-APIC mode. |
| 2801 | */ |
| 2802 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2803 | static void __devinit cciss_interrupt_mode(ctlr_info_t *c, |
| 2804 | struct pci_dev *pdev, __u32 board_id) |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 2805 | { |
| 2806 | #ifdef CONFIG_PCI_MSI |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2807 | int err; |
| 2808 | struct msix_entry cciss_msix_entries[4] = { {0, 0}, {0, 1}, |
| 2809 | {0, 2}, {0, 3} |
| 2810 | }; |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 2811 | |
| 2812 | /* Some boards advertise MSI but don't really support it */ |
| 2813 | if ((board_id == 0x40700E11) || |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2814 | (board_id == 0x40800E11) || |
| 2815 | (board_id == 0x40820E11) || (board_id == 0x40830E11)) |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 2816 | goto default_int_mode; |
| 2817 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2818 | if (pci_find_capability(pdev, PCI_CAP_ID_MSIX)) { |
| 2819 | err = pci_enable_msix(pdev, cciss_msix_entries, 4); |
| 2820 | if (!err) { |
| 2821 | c->intr[0] = cciss_msix_entries[0].vector; |
| 2822 | c->intr[1] = cciss_msix_entries[1].vector; |
| 2823 | c->intr[2] = cciss_msix_entries[2].vector; |
| 2824 | c->intr[3] = cciss_msix_entries[3].vector; |
| 2825 | c->msix_vector = 1; |
| 2826 | return; |
| 2827 | } |
| 2828 | if (err > 0) { |
| 2829 | printk(KERN_WARNING "cciss: only %d MSI-X vectors " |
| 2830 | "available\n", err); |
| 2831 | } else { |
| 2832 | printk(KERN_WARNING "cciss: MSI-X init failed %d\n", |
| 2833 | err); |
| 2834 | } |
| 2835 | } |
| 2836 | if (pci_find_capability(pdev, PCI_CAP_ID_MSI)) { |
| 2837 | if (!pci_enable_msi(pdev)) { |
| 2838 | c->intr[SIMPLE_MODE_INT] = pdev->irq; |
| 2839 | c->msi_vector = 1; |
| 2840 | return; |
| 2841 | } else { |
| 2842 | printk(KERN_WARNING "cciss: MSI init failed\n"); |
| 2843 | c->intr[SIMPLE_MODE_INT] = pdev->irq; |
| 2844 | return; |
| 2845 | } |
| 2846 | } |
| 2847 | default_int_mode: |
| 2848 | #endif /* CONFIG_PCI_MSI */ |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 2849 | /* 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] | 2850 | c->intr[SIMPLE_MODE_INT] = pdev->irq; |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 2851 | return; |
| 2852 | } |
| 2853 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2854 | static int cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev) |
| 2855 | { |
| 2856 | ushort subsystem_vendor_id, subsystem_device_id, command; |
| 2857 | __u32 board_id, scratchpad = 0; |
| 2858 | __u64 cfg_offset; |
| 2859 | __u32 cfg_base_addr; |
| 2860 | __u64 cfg_base_addr_index; |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 2861 | int i, err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2862 | |
| 2863 | /* check to see if controller has been disabled */ |
| 2864 | /* BEFORE trying to enable it */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2865 | (void)pci_read_config_word(pdev, PCI_COMMAND, &command); |
| 2866 | if (!(command & 0x02)) { |
| 2867 | printk(KERN_WARNING |
| 2868 | "cciss: controller appears to be disabled\n"); |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 2869 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2870 | } |
| 2871 | |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 2872 | err = pci_enable_device(pdev); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2873 | if (err) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2874 | printk(KERN_ERR "cciss: Unable to Enable PCI device\n"); |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 2875 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2876 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2877 | |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 2878 | err = pci_request_regions(pdev, "cciss"); |
| 2879 | if (err) { |
| 2880 | printk(KERN_ERR "cciss: Cannot obtain PCI resources, " |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2881 | "aborting\n"); |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 2882 | goto err_out_disable_pdev; |
| 2883 | } |
| 2884 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2885 | subsystem_vendor_id = pdev->subsystem_vendor; |
| 2886 | subsystem_device_id = pdev->subsystem_device; |
| 2887 | board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2888 | subsystem_vendor_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2889 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2890 | #ifdef CCISS_DEBUG |
| 2891 | printk("command = %x\n", command); |
| 2892 | printk("irq = %x\n", pdev->irq); |
| 2893 | printk("board_id = %x\n", board_id); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2894 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2895 | |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 2896 | /* If the kernel supports MSI/MSI-X we will try to enable that functionality, |
| 2897 | * else we use the IO-APIC interrupt assigned to us by system ROM. |
| 2898 | */ |
| 2899 | cciss_interrupt_mode(c, pdev, board_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2900 | |
| 2901 | /* |
| 2902 | * Memory base addr is first addr , the second points to the config |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2903 | * table |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2904 | */ |
| 2905 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2906 | c->paddr = pci_resource_start(pdev, 0); /* addressing mode bits already removed */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2907 | #ifdef CCISS_DEBUG |
| 2908 | printk("address 0 = %x\n", c->paddr); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2909 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2910 | c->vaddr = remap_pci_mem(c->paddr, 200); |
| 2911 | |
| 2912 | /* Wait for the board to become ready. (PCI hotplug needs this.) |
| 2913 | * We poll for up to 120 secs, once per 100ms. */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2914 | for (i = 0; i < 1200; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2915 | scratchpad = readl(c->vaddr + SA5_SCRATCHPAD_OFFSET); |
| 2916 | if (scratchpad == CCISS_FIRMWARE_READY) |
| 2917 | break; |
| 2918 | set_current_state(TASK_INTERRUPTIBLE); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2919 | schedule_timeout(HZ / 10); /* wait 100ms */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2920 | } |
| 2921 | if (scratchpad != CCISS_FIRMWARE_READY) { |
| 2922 | printk(KERN_WARNING "cciss: Board not ready. Timed out.\n"); |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 2923 | err = -ENODEV; |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 2924 | goto err_out_free_res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2925 | } |
| 2926 | |
| 2927 | /* get the address index number */ |
| 2928 | cfg_base_addr = readl(c->vaddr + SA5_CTCFG_OFFSET); |
| 2929 | cfg_base_addr &= (__u32) 0x0000ffff; |
| 2930 | #ifdef CCISS_DEBUG |
| 2931 | printk("cfg base address = %x\n", cfg_base_addr); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2932 | #endif /* CCISS_DEBUG */ |
| 2933 | cfg_base_addr_index = find_PCI_BAR_index(pdev, cfg_base_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2934 | #ifdef CCISS_DEBUG |
| 2935 | printk("cfg base address index = %x\n", cfg_base_addr_index); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2936 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2937 | if (cfg_base_addr_index == -1) { |
| 2938 | printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n"); |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 2939 | err = -ENODEV; |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 2940 | goto err_out_free_res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2941 | } |
| 2942 | |
| 2943 | cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET); |
| 2944 | #ifdef CCISS_DEBUG |
| 2945 | printk("cfg offset = %x\n", cfg_offset); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2946 | #endif /* CCISS_DEBUG */ |
| 2947 | c->cfgtable = remap_pci_mem(pci_resource_start(pdev, |
| 2948 | cfg_base_addr_index) + |
| 2949 | cfg_offset, sizeof(CfgTable_struct)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2950 | c->board_id = board_id; |
| 2951 | |
| 2952 | #ifdef CCISS_DEBUG |
Tobias Klauser | 945f390 | 2006-01-08 01:05:11 -0800 | [diff] [blame] | 2953 | print_cfg_table(c->cfgtable); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2954 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2955 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2956 | for (i = 0; i < ARRAY_SIZE(products); i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2957 | if (board_id == products[i].board_id) { |
| 2958 | c->product_name = products[i].product_name; |
| 2959 | c->access = *(products[i].access); |
| 2960 | break; |
| 2961 | } |
| 2962 | } |
Bjorn Helgaas | 5e8621e | 2006-06-25 05:49:03 -0700 | [diff] [blame] | 2963 | if (i == ARRAY_SIZE(products)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2964 | printk(KERN_WARNING "cciss: Sorry, I don't know how" |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2965 | " to access the Smart Array controller %08lx\n", |
| 2966 | (unsigned long)board_id); |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 2967 | err = -ENODEV; |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 2968 | goto err_out_free_res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2969 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2970 | if ((readb(&c->cfgtable->Signature[0]) != 'C') || |
| 2971 | (readb(&c->cfgtable->Signature[1]) != 'I') || |
| 2972 | (readb(&c->cfgtable->Signature[2]) != 'S') || |
| 2973 | (readb(&c->cfgtable->Signature[3]) != 'S')) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2974 | printk("Does not appear to be a valid CISS config table\n"); |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 2975 | err = -ENODEV; |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 2976 | goto err_out_free_res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2977 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2978 | #ifdef CONFIG_X86 |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2979 | { |
| 2980 | /* Need to enable prefetch in the SCSI core for 6400 in x86 */ |
| 2981 | __u32 prefetch; |
| 2982 | prefetch = readl(&(c->cfgtable->SCSI_Prefetch)); |
| 2983 | prefetch |= 0x100; |
| 2984 | writel(prefetch, &(c->cfgtable->SCSI_Prefetch)); |
| 2985 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2986 | #endif |
| 2987 | |
| 2988 | #ifdef CCISS_DEBUG |
| 2989 | printk("Trying to put board into Simple mode\n"); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2990 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2991 | c->max_commands = readl(&(c->cfgtable->CmdsOutMax)); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2992 | /* Update the field, and then ring the doorbell */ |
| 2993 | writel(CFGTBL_Trans_Simple, &(c->cfgtable->HostWrite.TransportRequest)); |
| 2994 | writel(CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2995 | |
| 2996 | /* under certain very rare conditions, this can take awhile. |
| 2997 | * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right |
| 2998 | * as we enter this code.) */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2999 | for (i = 0; i < MAX_CONFIG_WAIT; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3000 | if (!(readl(c->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq)) |
| 3001 | break; |
| 3002 | /* delay and try again */ |
| 3003 | set_current_state(TASK_INTERRUPTIBLE); |
| 3004 | schedule_timeout(10); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3005 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3006 | |
| 3007 | #ifdef CCISS_DEBUG |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3008 | printk(KERN_DEBUG "I counter got to %d %x\n", i, |
| 3009 | readl(c->vaddr + SA5_DOORBELL)); |
| 3010 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3011 | #ifdef CCISS_DEBUG |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3012 | print_cfg_table(c->cfgtable); |
| 3013 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3014 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3015 | if (!(readl(&(c->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3016 | printk(KERN_WARNING "cciss: unable to get board into" |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3017 | " simple mode\n"); |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 3018 | err = -ENODEV; |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 3019 | goto err_out_free_res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3020 | } |
| 3021 | return 0; |
| 3022 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3023 | err_out_free_res: |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 3024 | pci_release_regions(pdev); |
| 3025 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3026 | err_out_disable_pdev: |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 3027 | pci_disable_device(pdev); |
| 3028 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3029 | } |
| 3030 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3031 | /* |
| 3032 | * Gets information about the local volumes attached to the controller. |
| 3033 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3034 | static void cciss_getgeometry(int cntl_num) |
| 3035 | { |
| 3036 | ReportLunData_struct *ld_buff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3037 | InquiryData_struct *inq_buff; |
| 3038 | int return_code; |
| 3039 | int i; |
| 3040 | int listlength = 0; |
| 3041 | __u32 lunid = 0; |
| 3042 | int block_size; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 3043 | sector_t total_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3044 | |
Eric Sesterhenn | 06ff37f | 2006-03-08 11:21:52 +0100 | [diff] [blame] | 3045 | ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3046 | if (ld_buff == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3047 | printk(KERN_ERR "cciss: out of memory\n"); |
| 3048 | return; |
| 3049 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3050 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
| 3051 | if (inq_buff == NULL) { |
| 3052 | printk(KERN_ERR "cciss: out of memory\n"); |
| 3053 | kfree(ld_buff); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3054 | return; |
| 3055 | } |
| 3056 | /* Get the firmware version */ |
| 3057 | return_code = sendcmd(CISS_INQUIRY, cntl_num, inq_buff, |
| 3058 | sizeof(InquiryData_struct), 0, 0, 0, NULL, |
| 3059 | TYPE_CMD); |
| 3060 | if (return_code == IO_OK) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3061 | hba[cntl_num]->firm_ver[0] = inq_buff->data_byte[32]; |
| 3062 | hba[cntl_num]->firm_ver[1] = inq_buff->data_byte[33]; |
| 3063 | hba[cntl_num]->firm_ver[2] = inq_buff->data_byte[34]; |
| 3064 | hba[cntl_num]->firm_ver[3] = inq_buff->data_byte[35]; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3065 | } else { /* send command failed */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3066 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3067 | printk(KERN_WARNING "cciss: unable to determine firmware" |
| 3068 | " version of controller\n"); |
| 3069 | } |
| 3070 | /* Get the number of logical volumes */ |
| 3071 | return_code = sendcmd(CISS_REPORT_LOG, cntl_num, ld_buff, |
| 3072 | sizeof(ReportLunData_struct), 0, 0, 0, NULL, |
| 3073 | TYPE_CMD); |
| 3074 | |
| 3075 | if (return_code == IO_OK) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3076 | #ifdef CCISS_DEBUG |
| 3077 | printk("LUN Data\n--------------------------\n"); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3078 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3079 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3080 | listlength |= |
| 3081 | (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24; |
| 3082 | listlength |= |
| 3083 | (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16; |
| 3084 | listlength |= |
| 3085 | (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3086 | listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3087 | } else { /* reading number of logical volumes failed */ |
| 3088 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3089 | printk(KERN_WARNING "cciss: report logical volume" |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3090 | " command failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3091 | listlength = 0; |
| 3092 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3093 | hba[cntl_num]->num_luns = listlength / 8; // 8 bytes pre entry |
| 3094 | if (hba[cntl_num]->num_luns > CISS_MAX_LUN) { |
| 3095 | printk(KERN_ERR |
| 3096 | "ciss: only %d number of logical volumes supported\n", |
| 3097 | CISS_MAX_LUN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3098 | hba[cntl_num]->num_luns = CISS_MAX_LUN; |
| 3099 | } |
| 3100 | #ifdef CCISS_DEBUG |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3101 | printk(KERN_DEBUG "Length = %x %x %x %x = %d\n", |
| 3102 | ld_buff->LUNListLength[0], ld_buff->LUNListLength[1], |
| 3103 | ld_buff->LUNListLength[2], ld_buff->LUNListLength[3], |
| 3104 | hba[cntl_num]->num_luns); |
| 3105 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3106 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3107 | hba[cntl_num]->highest_lun = hba[cntl_num]->num_luns - 1; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3108 | for (i = 0; i < CISS_MAX_LUN; i++) { |
| 3109 | if (i < hba[cntl_num]->num_luns) { |
| 3110 | lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3])) |
| 3111 | << 24; |
| 3112 | lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][2])) |
| 3113 | << 16; |
| 3114 | lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][1])) |
| 3115 | << 8; |
| 3116 | lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3117 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3118 | hba[cntl_num]->drv[i].LunID = lunid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3119 | |
| 3120 | #ifdef CCISS_DEBUG |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3121 | printk(KERN_DEBUG "LUN[%d]: %x %x %x %x = %x\n", i, |
| 3122 | ld_buff->LUN[i][0], ld_buff->LUN[i][1], |
| 3123 | ld_buff->LUN[i][2], ld_buff->LUN[i][3], |
| 3124 | hba[cntl_num]->drv[i].LunID); |
| 3125 | #endif /* CCISS_DEBUG */ |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 3126 | |
| 3127 | /* testing to see if 16-byte CDBs are already being used */ |
| 3128 | if(hba[cntl_num]->cciss_read == CCISS_READ_16) { |
| 3129 | cciss_read_capacity_16(cntl_num, i, 0, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3130 | &total_size, &block_size); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 3131 | goto geo_inq; |
| 3132 | } |
| 3133 | cciss_read_capacity(cntl_num, i, 0, &total_size, &block_size); |
| 3134 | |
| 3135 | /* total_size = last LBA + 1 */ |
| 3136 | if(total_size == (__u32) 0) { |
| 3137 | cciss_read_capacity_16(cntl_num, i, 0, |
| 3138 | &total_size, &block_size); |
| 3139 | hba[cntl_num]->cciss_read = CCISS_READ_16; |
| 3140 | hba[cntl_num]->cciss_write = CCISS_WRITE_16; |
| 3141 | } else { |
| 3142 | hba[cntl_num]->cciss_read = CCISS_READ_10; |
| 3143 | hba[cntl_num]->cciss_write = CCISS_WRITE_10; |
| 3144 | } |
| 3145 | geo_inq: |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 3146 | cciss_geometry_inquiry(cntl_num, i, 0, total_size, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3147 | block_size, inq_buff, |
| 3148 | &hba[cntl_num]->drv[i]); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 3149 | } else { |
| 3150 | /* initialize raid_level to indicate a free space */ |
| 3151 | hba[cntl_num]->drv[i].raid_level = -1; |
| 3152 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3153 | } |
| 3154 | kfree(ld_buff); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3155 | kfree(inq_buff); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3156 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3157 | |
| 3158 | /* Function to find the first free pointer into our hba[] array */ |
| 3159 | /* Returns -1 if no free entries are left. */ |
| 3160 | static int alloc_cciss_hba(void) |
| 3161 | { |
| 3162 | struct gendisk *disk[NWD]; |
| 3163 | int i, n; |
| 3164 | for (n = 0; n < NWD; n++) { |
| 3165 | disk[n] = alloc_disk(1 << NWD_SHIFT); |
| 3166 | if (!disk[n]) |
| 3167 | goto out; |
| 3168 | } |
| 3169 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3170 | for (i = 0; i < MAX_CTLR; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3171 | if (!hba[i]) { |
| 3172 | ctlr_info_t *p; |
Eric Sesterhenn | 06ff37f | 2006-03-08 11:21:52 +0100 | [diff] [blame] | 3173 | p = kzalloc(sizeof(ctlr_info_t), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3174 | if (!p) |
| 3175 | goto Enomem; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3176 | for (n = 0; n < NWD; n++) |
| 3177 | p->gendisk[n] = disk[n]; |
| 3178 | hba[i] = p; |
| 3179 | return i; |
| 3180 | } |
| 3181 | } |
| 3182 | printk(KERN_WARNING "cciss: This driver supports a maximum" |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3183 | " of %d controllers.\n", MAX_CTLR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3184 | goto out; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3185 | Enomem: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3186 | printk(KERN_ERR "cciss: out of memory.\n"); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3187 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3188 | while (n--) |
| 3189 | put_disk(disk[n]); |
| 3190 | return -1; |
| 3191 | } |
| 3192 | |
| 3193 | static void free_hba(int i) |
| 3194 | { |
| 3195 | ctlr_info_t *p = hba[i]; |
| 3196 | int n; |
| 3197 | |
| 3198 | hba[i] = NULL; |
| 3199 | for (n = 0; n < NWD; n++) |
| 3200 | put_disk(p->gendisk[n]); |
| 3201 | kfree(p); |
| 3202 | } |
| 3203 | |
| 3204 | /* |
| 3205 | * This is it. Find all the controllers and register them. I really hate |
| 3206 | * stealing all these major device numbers. |
| 3207 | * returns the number of block devices registered. |
| 3208 | */ |
| 3209 | static int __devinit cciss_init_one(struct pci_dev *pdev, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3210 | const struct pci_device_id *ent) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3211 | { |
| 3212 | request_queue_t *q; |
| 3213 | int i; |
| 3214 | int j; |
| 3215 | int rc; |
Bjorn Helgaas | 40aabb5 | 2006-06-25 05:49:03 -0700 | [diff] [blame] | 3216 | int dac; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3217 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3218 | i = alloc_cciss_hba(); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3219 | if (i < 0) |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 3220 | return -1; |
Mike Miller | 1f8ef38 | 2005-09-13 01:25:21 -0700 | [diff] [blame] | 3221 | |
| 3222 | hba[i]->busy_initializing = 1; |
| 3223 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3224 | if (cciss_pci_init(hba[i], pdev) != 0) |
| 3225 | goto clean1; |
| 3226 | |
| 3227 | sprintf(hba[i]->devname, "cciss%d", i); |
| 3228 | hba[i]->ctlr = i; |
| 3229 | hba[i]->pdev = pdev; |
| 3230 | |
| 3231 | /* configure PCI DMA stuff */ |
mike.miller@hp.com | eb0df99 | 2005-06-10 14:51:04 -0500 | [diff] [blame] | 3232 | if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) |
Bjorn Helgaas | 40aabb5 | 2006-06-25 05:49:03 -0700 | [diff] [blame] | 3233 | dac = 1; |
mike.miller@hp.com | eb0df99 | 2005-06-10 14:51:04 -0500 | [diff] [blame] | 3234 | else if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK)) |
Bjorn Helgaas | 40aabb5 | 2006-06-25 05:49:03 -0700 | [diff] [blame] | 3235 | dac = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3236 | else { |
Bjorn Helgaas | 40aabb5 | 2006-06-25 05:49:03 -0700 | [diff] [blame] | 3237 | printk(KERN_ERR "cciss: no suitable DMA available\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3238 | goto clean1; |
| 3239 | } |
| 3240 | |
| 3241 | /* |
| 3242 | * register with the major number, or get a dynamic major number |
| 3243 | * by passing 0 as argument. This is done for greater than |
| 3244 | * 8 controller support. |
| 3245 | */ |
| 3246 | if (i < MAX_CTLR_ORIG) |
Christoph Hellwig | 564de74 | 2006-01-08 01:05:17 -0800 | [diff] [blame] | 3247 | hba[i]->major = COMPAQ_CISS_MAJOR + i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3248 | rc = register_blkdev(hba[i]->major, hba[i]->devname); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3249 | if (rc == -EBUSY || rc == -EINVAL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3250 | printk(KERN_ERR |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3251 | "cciss: Unable to get major number %d for %s " |
| 3252 | "on hba %d\n", hba[i]->major, hba[i]->devname, i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3253 | goto clean1; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3254 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3255 | if (i >= MAX_CTLR_ORIG) |
| 3256 | hba[i]->major = rc; |
| 3257 | } |
| 3258 | |
| 3259 | /* make sure the board interrupts are off */ |
| 3260 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3261 | if (request_irq(hba[i]->intr[SIMPLE_MODE_INT], do_cciss_intr, |
Thomas Gleixner | 69ab391 | 2006-07-01 19:29:32 -0700 | [diff] [blame] | 3262 | IRQF_DISABLED | IRQF_SHARED, hba[i]->devname, hba[i])) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3263 | printk(KERN_ERR "cciss: Unable to get irq %d for %s\n", |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3264 | hba[i]->intr[SIMPLE_MODE_INT], hba[i]->devname); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3265 | goto clean2; |
| 3266 | } |
Bjorn Helgaas | 40aabb5 | 2006-06-25 05:49:03 -0700 | [diff] [blame] | 3267 | |
| 3268 | 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] | 3269 | hba[i]->devname, pdev->device, pci_name(pdev), |
| 3270 | hba[i]->intr[SIMPLE_MODE_INT], dac ? "" : " not"); |
Bjorn Helgaas | 40aabb5 | 2006-06-25 05:49:03 -0700 | [diff] [blame] | 3271 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3272 | hba[i]->cmd_pool_bits = |
| 3273 | kmalloc(((NR_CMDS + BITS_PER_LONG - |
| 3274 | 1) / BITS_PER_LONG) * sizeof(unsigned long), GFP_KERNEL); |
| 3275 | hba[i]->cmd_pool = (CommandList_struct *) |
| 3276 | pci_alloc_consistent(hba[i]->pdev, |
| 3277 | NR_CMDS * sizeof(CommandList_struct), |
| 3278 | &(hba[i]->cmd_pool_dhandle)); |
| 3279 | hba[i]->errinfo_pool = (ErrorInfo_struct *) |
| 3280 | pci_alloc_consistent(hba[i]->pdev, |
| 3281 | NR_CMDS * sizeof(ErrorInfo_struct), |
| 3282 | &(hba[i]->errinfo_pool_dhandle)); |
| 3283 | if ((hba[i]->cmd_pool_bits == NULL) |
| 3284 | || (hba[i]->cmd_pool == NULL) |
| 3285 | || (hba[i]->errinfo_pool == NULL)) { |
| 3286 | printk(KERN_ERR "cciss: out of memory"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3287 | goto clean4; |
| 3288 | } |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3289 | #ifdef CONFIG_CISS_SCSI_TAPE |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3290 | hba[i]->scsi_rejects.complete = |
| 3291 | kmalloc(sizeof(hba[i]->scsi_rejects.complete[0]) * |
| 3292 | (NR_CMDS + 5), GFP_KERNEL); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3293 | if (hba[i]->scsi_rejects.complete == NULL) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3294 | printk(KERN_ERR "cciss: out of memory"); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3295 | goto clean4; |
| 3296 | } |
| 3297 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3298 | spin_lock_init(&hba[i]->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3299 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3300 | /* Initialize the pdev driver private data. |
| 3301 | have it point to hba[i]. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3302 | pci_set_drvdata(pdev, hba[i]); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3303 | /* command and error info recs zeroed out before |
| 3304 | they are used */ |
| 3305 | memset(hba[i]->cmd_pool_bits, 0, |
| 3306 | ((NR_CMDS + BITS_PER_LONG - |
| 3307 | 1) / BITS_PER_LONG) * sizeof(unsigned long)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3308 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3309 | #ifdef CCISS_DEBUG |
| 3310 | printk(KERN_DEBUG "Scanning for drives on controller cciss%d\n", i); |
| 3311 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3312 | |
| 3313 | cciss_getgeometry(i); |
| 3314 | |
| 3315 | cciss_scsi_setup(i); |
| 3316 | |
| 3317 | /* Turn the interrupts on so we can service requests */ |
| 3318 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON); |
| 3319 | |
| 3320 | cciss_procinit(i); |
Mike Miller | d6dbf42 | 2005-09-21 09:55:32 -0700 | [diff] [blame] | 3321 | hba[i]->busy_initializing = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3322 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3323 | for (j = 0; j < NWD; j++) { /* mfm */ |
Mike Miller | ad2b931 | 2005-07-28 01:07:31 -0700 | [diff] [blame] | 3324 | drive_info_struct *drv = &(hba[i]->drv[j]); |
| 3325 | struct gendisk *disk = hba[i]->gendisk[j]; |
| 3326 | |
| 3327 | q = blk_init_queue(do_cciss_request, &hba[i]->lock); |
| 3328 | if (!q) { |
| 3329 | printk(KERN_ERR |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3330 | "cciss: unable to allocate queue for disk %d\n", |
| 3331 | j); |
Mike Miller | ad2b931 | 2005-07-28 01:07:31 -0700 | [diff] [blame] | 3332 | break; |
| 3333 | } |
| 3334 | drv->queue = q; |
| 3335 | |
| 3336 | q->backing_dev_info.ra_pages = READ_AHEAD; |
Jens Axboe | a9925a0 | 2006-01-09 16:04:06 +0100 | [diff] [blame] | 3337 | blk_queue_bounce_limit(q, hba[i]->pdev->dma_mask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3338 | |
Jens Axboe | a9925a0 | 2006-01-09 16:04:06 +0100 | [diff] [blame] | 3339 | /* This is a hardware imposed limit. */ |
| 3340 | blk_queue_max_hw_segments(q, MAXSGENTRIES); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3341 | |
Jens Axboe | a9925a0 | 2006-01-09 16:04:06 +0100 | [diff] [blame] | 3342 | /* This is a limit in the driver and could be eliminated. */ |
| 3343 | blk_queue_max_phys_segments(q, MAXSGENTRIES); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3344 | |
Jens Axboe | a9925a0 | 2006-01-09 16:04:06 +0100 | [diff] [blame] | 3345 | blk_queue_max_sectors(q, 512); |
| 3346 | |
| 3347 | blk_queue_softirq_done(q, cciss_softirq_done); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3348 | |
Mike Miller | ad2b931 | 2005-07-28 01:07:31 -0700 | [diff] [blame] | 3349 | q->queuedata = hba[i]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3350 | sprintf(disk->disk_name, "cciss/c%dd%d", i, j); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3351 | disk->major = hba[i]->major; |
| 3352 | disk->first_minor = j << NWD_SHIFT; |
| 3353 | disk->fops = &cciss_fops; |
Mike Miller | ad2b931 | 2005-07-28 01:07:31 -0700 | [diff] [blame] | 3354 | disk->queue = q; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3355 | disk->private_data = drv; |
Greg Kroah-Hartman | 27c0ff8 | 2006-04-27 15:46:39 -0700 | [diff] [blame] | 3356 | disk->driverfs_dev = &pdev->dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3357 | /* we must register the controller even if no disks exist */ |
| 3358 | /* this is for the online array utilities */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3359 | if (!drv->heads && j) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3360 | continue; |
Mike Miller | ad2b931 | 2005-07-28 01:07:31 -0700 | [diff] [blame] | 3361 | blk_queue_hardsect_size(q, drv->block_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3362 | set_capacity(disk, drv->nr_blocks); |
| 3363 | add_disk(disk); |
| 3364 | } |
Mike Miller | ad2b931 | 2005-07-28 01:07:31 -0700 | [diff] [blame] | 3365 | |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 3366 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3367 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3368 | clean4: |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3369 | #ifdef CONFIG_CISS_SCSI_TAPE |
Andrew Morton | 1acc0b0 | 2006-01-04 18:30:03 -0800 | [diff] [blame] | 3370 | kfree(hba[i]->scsi_rejects.complete); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3371 | #endif |
Jesper Juhl | 6044ec8 | 2005-11-07 01:01:32 -0800 | [diff] [blame] | 3372 | kfree(hba[i]->cmd_pool_bits); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3373 | if (hba[i]->cmd_pool) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3374 | pci_free_consistent(hba[i]->pdev, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3375 | NR_CMDS * sizeof(CommandList_struct), |
| 3376 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); |
| 3377 | if (hba[i]->errinfo_pool) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3378 | pci_free_consistent(hba[i]->pdev, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3379 | NR_CMDS * sizeof(ErrorInfo_struct), |
| 3380 | hba[i]->errinfo_pool, |
| 3381 | hba[i]->errinfo_pool_dhandle); |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3382 | free_irq(hba[i]->intr[SIMPLE_MODE_INT], hba[i]); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3383 | clean2: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3384 | unregister_blkdev(hba[i]->major, hba[i]->devname); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3385 | clean1: |
Mike Miller | 1f8ef38 | 2005-09-13 01:25:21 -0700 | [diff] [blame] | 3386 | hba[i]->busy_initializing = 0; |
Patrick McHardy | 61808c2 | 2006-03-23 02:59:24 -0800 | [diff] [blame] | 3387 | free_hba(i); |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 3388 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3389 | } |
| 3390 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3391 | static void __devexit cciss_remove_one(struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3392 | { |
| 3393 | ctlr_info_t *tmp_ptr; |
| 3394 | int i, j; |
| 3395 | char flush_buf[4]; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3396 | int return_code; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3397 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3398 | if (pci_get_drvdata(pdev) == NULL) { |
| 3399 | printk(KERN_ERR "cciss: Unable to remove device \n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3400 | return; |
| 3401 | } |
| 3402 | tmp_ptr = pci_get_drvdata(pdev); |
| 3403 | i = tmp_ptr->ctlr; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3404 | if (hba[i] == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3405 | printk(KERN_ERR "cciss: device appears to " |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3406 | "already be removed \n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3407 | return; |
| 3408 | } |
| 3409 | /* Turn board interrupts off and send the flush cache command */ |
| 3410 | /* sendcmd will turn off interrupt, and send the flush... |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3411 | * To write all data in the battery backed cache to disks */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3412 | memset(flush_buf, 0, 4); |
| 3413 | return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, 0, 0, NULL, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3414 | TYPE_CMD); |
| 3415 | if (return_code != IO_OK) { |
| 3416 | printk(KERN_WARNING "Error Flushing cache on controller %d\n", |
| 3417 | i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3418 | } |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3419 | free_irq(hba[i]->intr[2], hba[i]); |
| 3420 | |
| 3421 | #ifdef CONFIG_PCI_MSI |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3422 | if (hba[i]->msix_vector) |
| 3423 | pci_disable_msix(hba[i]->pdev); |
| 3424 | else if (hba[i]->msi_vector) |
| 3425 | pci_disable_msi(hba[i]->pdev); |
| 3426 | #endif /* CONFIG_PCI_MSI */ |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3427 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3428 | iounmap(hba[i]->vaddr); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3429 | cciss_unregister_scsi(i); /* unhook from SCSI subsystem */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3430 | unregister_blkdev(hba[i]->major, hba[i]->devname); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3431 | remove_proc_entry(hba[i]->devname, proc_cciss); |
| 3432 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3433 | /* remove it from the disk list */ |
| 3434 | for (j = 0; j < NWD; j++) { |
| 3435 | struct gendisk *disk = hba[i]->gendisk[j]; |
mikem | 6f5a0f7 | 2005-11-18 22:05:36 +0100 | [diff] [blame] | 3436 | if (disk) { |
| 3437 | request_queue_t *q = disk->queue; |
| 3438 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3439 | if (disk->flags & GENHD_FL_UP) |
mikem | 6f5a0f7 | 2005-11-18 22:05:36 +0100 | [diff] [blame] | 3440 | del_gendisk(disk); |
| 3441 | if (q) |
| 3442 | blk_cleanup_queue(q); |
Mike Miller | 6a445d3 | 2005-09-13 01:25:23 -0700 | [diff] [blame] | 3443 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3444 | } |
| 3445 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3446 | pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof(CommandList_struct), |
| 3447 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3448 | pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof(ErrorInfo_struct), |
| 3449 | hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3450 | kfree(hba[i]->cmd_pool_bits); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3451 | #ifdef CONFIG_CISS_SCSI_TAPE |
| 3452 | kfree(hba[i]->scsi_rejects.complete); |
| 3453 | #endif |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3454 | pci_release_regions(pdev); |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 3455 | pci_disable_device(pdev); |
| 3456 | pci_set_drvdata(pdev, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3457 | free_hba(i); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3458 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3459 | |
| 3460 | static struct pci_driver cciss_pci_driver = { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3461 | .name = "cciss", |
| 3462 | .probe = cciss_init_one, |
| 3463 | .remove = __devexit_p(cciss_remove_one), |
| 3464 | .id_table = cciss_pci_device_id, /* id_table */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3465 | }; |
| 3466 | |
| 3467 | /* |
| 3468 | * 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] | 3469 | * 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] | 3470 | */ |
| 3471 | static int __init cciss_init(void) |
| 3472 | { |
| 3473 | printk(KERN_INFO DRIVER_NAME "\n"); |
| 3474 | |
| 3475 | /* Register for our PCI devices */ |
Richard Knutsson | 9bfab8c | 2005-11-30 00:59:34 +0100 | [diff] [blame] | 3476 | return pci_register_driver(&cciss_pci_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3477 | } |
| 3478 | |
| 3479 | static void __exit cciss_cleanup(void) |
| 3480 | { |
| 3481 | int i; |
| 3482 | |
| 3483 | pci_unregister_driver(&cciss_pci_driver); |
| 3484 | /* double check that all controller entrys have been removed */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3485 | for (i = 0; i < MAX_CTLR; i++) { |
| 3486 | if (hba[i] != NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3487 | printk(KERN_WARNING "cciss: had to remove" |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3488 | " controller %d\n", i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3489 | cciss_remove_one(hba[i]->pdev); |
| 3490 | } |
| 3491 | } |
| 3492 | remove_proc_entry("cciss", proc_root_driver); |
| 3493 | } |
| 3494 | |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 3495 | static void fail_all_cmds(unsigned long ctlr) |
| 3496 | { |
| 3497 | /* If we get here, the board is apparently dead. */ |
| 3498 | ctlr_info_t *h = hba[ctlr]; |
| 3499 | CommandList_struct *c; |
| 3500 | unsigned long flags; |
| 3501 | |
| 3502 | printk(KERN_WARNING "cciss%d: controller not responding.\n", h->ctlr); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3503 | h->alive = 0; /* the controller apparently died... */ |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 3504 | |
| 3505 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); |
| 3506 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3507 | pci_disable_device(h->pdev); /* Make sure it is really dead. */ |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 3508 | |
| 3509 | /* move everything off the request queue onto the completed queue */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3510 | while ((c = h->reqQ) != NULL) { |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 3511 | removeQ(&(h->reqQ), c); |
| 3512 | h->Qdepth--; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3513 | addQ(&(h->cmpQ), c); |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 3514 | } |
| 3515 | |
| 3516 | /* Now, fail everything on the completed queue with a HW error */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3517 | while ((c = h->cmpQ) != NULL) { |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 3518 | removeQ(&h->cmpQ, c); |
| 3519 | c->err_info->CommandStatus = CMD_HARDWARE_ERR; |
| 3520 | if (c->cmd_type == CMD_RWREQ) { |
| 3521 | complete_command(h, c, 0); |
| 3522 | } else if (c->cmd_type == CMD_IOCTL_PEND) |
| 3523 | complete(c->waiting); |
| 3524 | #ifdef CONFIG_CISS_SCSI_TAPE |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3525 | else if (c->cmd_type == CMD_SCSI) |
| 3526 | complete_scsi_command(c, 0, 0); |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 3527 | #endif |
| 3528 | } |
| 3529 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
| 3530 | return; |
| 3531 | } |
| 3532 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3533 | module_init(cciss_init); |
| 3534 | module_exit(cciss_cleanup); |