Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Disk Array driver for Compaq SMART2 Controllers |
| 3 | * Copyright 1998 Compaq Computer Corporation |
| 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 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | #include <linux/module.h> |
| 23 | #include <linux/types.h> |
| 24 | #include <linux/pci.h> |
| 25 | #include <linux/bio.h> |
| 26 | #include <linux/interrupt.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/blkpg.h> |
| 33 | #include <linux/timer.h> |
| 34 | #include <linux/proc_fs.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | #include <linux/init.h> |
| 36 | #include <linux/hdreg.h> |
| 37 | #include <linux/spinlock.h> |
| 38 | #include <linux/blkdev.h> |
| 39 | #include <linux/genhd.h> |
Ralf Baechle | 1176360 | 2007-10-23 20:42:11 +0200 | [diff] [blame] | 40 | #include <linux/scatterlist.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | #include <asm/uaccess.h> |
| 42 | #include <asm/io.h> |
| 43 | |
| 44 | |
| 45 | #define SMART2_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin)) |
| 46 | |
| 47 | #define DRIVER_NAME "Compaq SMART2 Driver (v 2.6.0)" |
| 48 | #define DRIVER_VERSION SMART2_DRIVER_VERSION(2,6,0) |
| 49 | |
| 50 | /* Embedded module documentation macros - see modules.h */ |
| 51 | /* Original author Chris Frantz - Compaq Computer Corporation */ |
| 52 | MODULE_AUTHOR("Compaq Computer Corporation"); |
| 53 | MODULE_DESCRIPTION("Driver for Compaq Smart2 Array Controllers version 2.6.0"); |
| 54 | MODULE_LICENSE("GPL"); |
| 55 | |
| 56 | #include "cpqarray.h" |
| 57 | #include "ida_cmd.h" |
| 58 | #include "smart1,2.h" |
| 59 | #include "ida_ioctl.h" |
| 60 | |
| 61 | #define READ_AHEAD 128 |
| 62 | #define NR_CMDS 128 /* This could probably go as high as ~400 */ |
| 63 | |
| 64 | #define MAX_CTLR 8 |
| 65 | #define CTLR_SHIFT 8 |
| 66 | |
| 67 | #define CPQARRAY_DMA_MASK 0xFFFFFFFF /* 32 bit DMA */ |
| 68 | |
| 69 | static int nr_ctlr; |
| 70 | static ctlr_info_t *hba[MAX_CTLR]; |
| 71 | |
| 72 | static int eisa[8]; |
| 73 | |
Tobias Klauser | 945f390 | 2006-01-08 01:05:11 -0800 | [diff] [blame] | 74 | #define NR_PRODUCTS ARRAY_SIZE(products) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | |
| 76 | /* board_id = Subsystem Device ID & Vendor ID |
| 77 | * product = Marketing Name for the board |
Tobias Klauser | 945f390 | 2006-01-08 01:05:11 -0800 | [diff] [blame] | 78 | * access = Address of the struct of function pointers |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | */ |
| 80 | static struct board_type products[] = { |
| 81 | { 0x0040110E, "IDA", &smart1_access }, |
| 82 | { 0x0140110E, "IDA-2", &smart1_access }, |
| 83 | { 0x1040110E, "IAES", &smart1_access }, |
| 84 | { 0x2040110E, "SMART", &smart1_access }, |
| 85 | { 0x3040110E, "SMART-2/E", &smart2e_access }, |
| 86 | { 0x40300E11, "SMART-2/P", &smart2_access }, |
| 87 | { 0x40310E11, "SMART-2SL", &smart2_access }, |
| 88 | { 0x40320E11, "Smart Array 3200", &smart2_access }, |
| 89 | { 0x40330E11, "Smart Array 3100ES", &smart2_access }, |
| 90 | { 0x40340E11, "Smart Array 221", &smart2_access }, |
| 91 | { 0x40400E11, "Integrated Array", &smart4_access }, |
| 92 | { 0x40480E11, "Compaq Raid LC2", &smart4_access }, |
| 93 | { 0x40500E11, "Smart Array 4200", &smart4_access }, |
| 94 | { 0x40510E11, "Smart Array 4250ES", &smart4_access }, |
| 95 | { 0x40580E11, "Smart Array 431", &smart4_access }, |
| 96 | }; |
| 97 | |
| 98 | /* define the PCI info for the PCI cards this driver can control */ |
| 99 | static const struct pci_device_id cpqarray_pci_device_id[] = |
| 100 | { |
| 101 | { PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_COMPAQ_42XX, |
| 102 | 0x0E11, 0x4058, 0, 0, 0}, /* SA431 */ |
| 103 | { PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_COMPAQ_42XX, |
| 104 | 0x0E11, 0x4051, 0, 0, 0}, /* SA4250ES */ |
| 105 | { PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_COMPAQ_42XX, |
| 106 | 0x0E11, 0x4050, 0, 0, 0}, /* SA4200 */ |
| 107 | { PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C1510, |
| 108 | 0x0E11, 0x4048, 0, 0, 0}, /* LC2 */ |
| 109 | { PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C1510, |
| 110 | 0x0E11, 0x4040, 0, 0, 0}, /* Integrated Array */ |
| 111 | { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_SMART2P, |
| 112 | 0x0E11, 0x4034, 0, 0, 0}, /* SA 221 */ |
| 113 | { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_SMART2P, |
| 114 | 0x0E11, 0x4033, 0, 0, 0}, /* SA 3100ES*/ |
| 115 | { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_SMART2P, |
| 116 | 0x0E11, 0x4032, 0, 0, 0}, /* SA 3200*/ |
| 117 | { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_SMART2P, |
| 118 | 0x0E11, 0x4031, 0, 0, 0}, /* SA 2SL*/ |
| 119 | { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_SMART2P, |
| 120 | 0x0E11, 0x4030, 0, 0, 0}, /* SA 2P */ |
| 121 | { 0 } |
| 122 | }; |
| 123 | |
| 124 | MODULE_DEVICE_TABLE(pci, cpqarray_pci_device_id); |
| 125 | |
| 126 | static struct gendisk *ida_gendisk[MAX_CTLR][NWD]; |
| 127 | |
| 128 | /* Debug... */ |
| 129 | #define DBG(s) do { s } while(0) |
| 130 | /* Debug (general info)... */ |
| 131 | #define DBGINFO(s) do { } while(0) |
| 132 | /* Debug Paranoid... */ |
| 133 | #define DBGP(s) do { } while(0) |
| 134 | /* Debug Extra Paranoid... */ |
| 135 | #define DBGPX(s) do { } while(0) |
| 136 | |
| 137 | static int cpqarray_pci_init(ctlr_info_t *c, struct pci_dev *pdev); |
| 138 | static void __iomem *remap_pci_mem(ulong base, ulong size); |
| 139 | static int cpqarray_eisa_detect(void); |
| 140 | static int pollcomplete(int ctlr); |
| 141 | static void getgeometry(int ctlr); |
| 142 | static void start_fwbk(int ctlr); |
| 143 | |
| 144 | static cmdlist_t * cmd_alloc(ctlr_info_t *h, int get_from_pool); |
| 145 | static void cmd_free(ctlr_info_t *h, cmdlist_t *c, int got_from_pool); |
| 146 | |
| 147 | static void free_hba(int i); |
| 148 | static int alloc_cpqarray_hba(void); |
| 149 | |
| 150 | static int sendcmd( |
| 151 | __u8 cmd, |
| 152 | int ctlr, |
| 153 | void *buff, |
| 154 | size_t size, |
| 155 | unsigned int blk, |
| 156 | unsigned int blkcnt, |
| 157 | unsigned int log_unit ); |
| 158 | |
| 159 | static int ida_open(struct inode *inode, struct file *filep); |
| 160 | static int ida_release(struct inode *inode, struct file *filep); |
| 161 | static int ida_ioctl(struct inode *inode, struct file *filep, unsigned int cmd, unsigned long arg); |
Christoph Hellwig | a885c8c | 2006-01-08 01:02:50 -0800 | [diff] [blame] | 162 | static int ida_getgeo(struct block_device *bdev, struct hd_geometry *geo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | static int ida_ctlr_ioctl(ctlr_info_t *h, int dsk, ida_ioctl_t *io); |
| 164 | |
Jens Axboe | 165125e | 2007-07-24 09:28:11 +0200 | [diff] [blame] | 165 | static void do_ida_request(struct request_queue *q); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | static void start_io(ctlr_info_t *h); |
| 167 | |
| 168 | static inline void addQ(cmdlist_t **Qptr, cmdlist_t *c); |
| 169 | static inline cmdlist_t *removeQ(cmdlist_t **Qptr, cmdlist_t *c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | static inline void complete_command(cmdlist_t *cmd, int timeout); |
| 171 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 172 | static irqreturn_t do_ida_intr(int irq, void *dev_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | static void ida_timer(unsigned long tdata); |
| 174 | static int ida_revalidate(struct gendisk *disk); |
| 175 | static int revalidate_allvol(ctlr_info_t *host); |
| 176 | static int cpqarray_register_ctlr(int ctlr, struct pci_dev *pdev); |
| 177 | |
| 178 | #ifdef CONFIG_PROC_FS |
| 179 | static void ida_procinit(int i); |
| 180 | static int ida_proc_get_info(char *buffer, char **start, off_t offset, int length, int *eof, void *data); |
| 181 | #else |
| 182 | static void ida_procinit(int i) {} |
| 183 | #endif |
| 184 | |
| 185 | static inline drv_info_t *get_drv(struct gendisk *disk) |
| 186 | { |
| 187 | return disk->private_data; |
| 188 | } |
| 189 | |
| 190 | static inline ctlr_info_t *get_host(struct gendisk *disk) |
| 191 | { |
| 192 | return disk->queue->queuedata; |
| 193 | } |
| 194 | |
| 195 | |
| 196 | static struct block_device_operations ida_fops = { |
| 197 | .owner = THIS_MODULE, |
| 198 | .open = ida_open, |
| 199 | .release = ida_release, |
| 200 | .ioctl = ida_ioctl, |
Christoph Hellwig | a885c8c | 2006-01-08 01:02:50 -0800 | [diff] [blame] | 201 | .getgeo = ida_getgeo, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | .revalidate_disk= ida_revalidate, |
| 203 | }; |
| 204 | |
| 205 | |
| 206 | #ifdef CONFIG_PROC_FS |
| 207 | |
| 208 | static struct proc_dir_entry *proc_array; |
| 209 | |
| 210 | /* |
| 211 | * Get us a file in /proc/array that says something about each controller. |
| 212 | * Create /proc/array if it doesn't exist yet. |
| 213 | */ |
| 214 | static void __init ida_procinit(int i) |
| 215 | { |
| 216 | if (proc_array == NULL) { |
Alexey Dobriyan | 928b4d8 | 2008-04-29 01:01:44 -0700 | [diff] [blame] | 217 | proc_array = proc_mkdir("driver/cpqarray", NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | if (!proc_array) return; |
| 219 | } |
| 220 | |
| 221 | create_proc_read_entry(hba[i]->devname, 0, proc_array, |
| 222 | ida_proc_get_info, hba[i]); |
| 223 | } |
| 224 | |
| 225 | /* |
| 226 | * Report information about this controller. |
| 227 | */ |
| 228 | static int ida_proc_get_info(char *buffer, char **start, off_t offset, int length, int *eof, void *data) |
| 229 | { |
| 230 | off_t pos = 0; |
| 231 | off_t len = 0; |
| 232 | int size, i, ctlr; |
| 233 | ctlr_info_t *h = (ctlr_info_t*)data; |
| 234 | drv_info_t *drv; |
| 235 | #ifdef CPQ_PROC_PRINT_QUEUES |
| 236 | cmdlist_t *c; |
| 237 | unsigned long flags; |
| 238 | #endif |
| 239 | |
| 240 | ctlr = h->ctlr; |
| 241 | size = sprintf(buffer, "%s: Compaq %s Controller\n" |
| 242 | " Board ID: 0x%08lx\n" |
| 243 | " Firmware Revision: %c%c%c%c\n" |
| 244 | " Controller Sig: 0x%08lx\n" |
| 245 | " Memory Address: 0x%08lx\n" |
| 246 | " I/O Port: 0x%04x\n" |
| 247 | " IRQ: %d\n" |
| 248 | " Logical drives: %d\n" |
| 249 | " Physical drives: %d\n\n" |
| 250 | " Current Q depth: %d\n" |
| 251 | " Max Q depth since init: %d\n\n", |
| 252 | h->devname, |
| 253 | h->product_name, |
| 254 | (unsigned long)h->board_id, |
| 255 | h->firm_rev[0], h->firm_rev[1], h->firm_rev[2], h->firm_rev[3], |
| 256 | (unsigned long)h->ctlr_sig, (unsigned long)h->vaddr, |
| 257 | (unsigned int) h->io_mem_addr, (unsigned int)h->intr, |
| 258 | h->log_drives, h->phys_drives, |
| 259 | h->Qdepth, h->maxQsinceinit); |
| 260 | |
| 261 | pos += size; len += size; |
| 262 | |
| 263 | size = sprintf(buffer+len, "Logical Drive Info:\n"); |
| 264 | pos += size; len += size; |
| 265 | |
| 266 | for(i=0; i<h->log_drives; i++) { |
| 267 | drv = &h->drv[i]; |
| 268 | size = sprintf(buffer+len, "ida/c%dd%d: blksz=%d nr_blks=%d\n", |
| 269 | ctlr, i, drv->blk_size, drv->nr_blks); |
| 270 | pos += size; len += size; |
| 271 | } |
| 272 | |
| 273 | #ifdef CPQ_PROC_PRINT_QUEUES |
| 274 | spin_lock_irqsave(IDA_LOCK(h->ctlr), flags); |
| 275 | size = sprintf(buffer+len, "\nCurrent Queues:\n"); |
| 276 | pos += size; len += size; |
| 277 | |
| 278 | c = h->reqQ; |
| 279 | size = sprintf(buffer+len, "reqQ = %p", c); pos += size; len += size; |
| 280 | if (c) c=c->next; |
| 281 | while(c && c != h->reqQ) { |
| 282 | size = sprintf(buffer+len, "->%p", c); |
| 283 | pos += size; len += size; |
| 284 | c=c->next; |
| 285 | } |
| 286 | |
| 287 | c = h->cmpQ; |
| 288 | size = sprintf(buffer+len, "\ncmpQ = %p", c); pos += size; len += size; |
| 289 | if (c) c=c->next; |
| 290 | while(c && c != h->cmpQ) { |
| 291 | size = sprintf(buffer+len, "->%p", c); |
| 292 | pos += size; len += size; |
| 293 | c=c->next; |
| 294 | } |
| 295 | |
| 296 | size = sprintf(buffer+len, "\n"); pos += size; len += size; |
| 297 | spin_unlock_irqrestore(IDA_LOCK(h->ctlr), flags); |
| 298 | #endif |
| 299 | size = sprintf(buffer+len, "nr_allocs = %d\nnr_frees = %d\n", |
| 300 | h->nr_allocs, h->nr_frees); |
| 301 | pos += size; len += size; |
| 302 | |
| 303 | *eof = 1; |
| 304 | *start = buffer+offset; |
| 305 | len -= offset; |
| 306 | if (len>length) |
| 307 | len = length; |
| 308 | return len; |
| 309 | } |
| 310 | #endif /* CONFIG_PROC_FS */ |
| 311 | |
| 312 | module_param_array(eisa, int, NULL, 0); |
| 313 | |
| 314 | static void release_io_mem(ctlr_info_t *c) |
| 315 | { |
| 316 | /* if IO mem was not protected do nothing */ |
| 317 | if( c->io_mem_addr == 0) |
| 318 | return; |
| 319 | release_region(c->io_mem_addr, c->io_mem_length); |
| 320 | c->io_mem_addr = 0; |
| 321 | c->io_mem_length = 0; |
| 322 | } |
| 323 | |
| 324 | static void __devexit cpqarray_remove_one(int i) |
| 325 | { |
| 326 | int j; |
| 327 | char buff[4]; |
| 328 | |
| 329 | /* sendcmd will turn off interrupt, and send the flush... |
| 330 | * To write all data in the battery backed cache to disks |
| 331 | * no data returned, but don't want to send NULL to sendcmd */ |
| 332 | if( sendcmd(FLUSH_CACHE, i, buff, 4, 0, 0, 0)) |
| 333 | { |
| 334 | printk(KERN_WARNING "Unable to flush cache on controller %d\n", |
| 335 | i); |
| 336 | } |
| 337 | free_irq(hba[i]->intr, hba[i]); |
| 338 | iounmap(hba[i]->vaddr); |
| 339 | unregister_blkdev(COMPAQ_SMART2_MAJOR+i, hba[i]->devname); |
| 340 | del_timer(&hba[i]->timer); |
| 341 | remove_proc_entry(hba[i]->devname, proc_array); |
| 342 | pci_free_consistent(hba[i]->pci_dev, |
| 343 | NR_CMDS * sizeof(cmdlist_t), (hba[i]->cmd_pool), |
| 344 | hba[i]->cmd_pool_dhandle); |
| 345 | kfree(hba[i]->cmd_pool_bits); |
| 346 | for(j = 0; j < NWD; j++) { |
| 347 | if (ida_gendisk[i][j]->flags & GENHD_FL_UP) |
| 348 | del_gendisk(ida_gendisk[i][j]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | put_disk(ida_gendisk[i][j]); |
| 350 | } |
| 351 | blk_cleanup_queue(hba[i]->queue); |
| 352 | release_io_mem(hba[i]); |
| 353 | free_hba(i); |
| 354 | } |
| 355 | |
| 356 | static void __devexit cpqarray_remove_one_pci (struct pci_dev *pdev) |
| 357 | { |
| 358 | int i; |
| 359 | ctlr_info_t *tmp_ptr; |
| 360 | |
| 361 | if (pci_get_drvdata(pdev) == NULL) { |
| 362 | printk( KERN_ERR "cpqarray: Unable to remove device \n"); |
| 363 | return; |
| 364 | } |
| 365 | |
| 366 | tmp_ptr = pci_get_drvdata(pdev); |
| 367 | i = tmp_ptr->ctlr; |
| 368 | if (hba[i] == NULL) { |
| 369 | printk(KERN_ERR "cpqarray: controller %d appears to have" |
| 370 | "already been removed \n", i); |
| 371 | return; |
| 372 | } |
| 373 | pci_set_drvdata(pdev, NULL); |
| 374 | |
| 375 | cpqarray_remove_one(i); |
| 376 | } |
| 377 | |
| 378 | /* removing an instance that was not removed automatically.. |
| 379 | * must be an eisa card. |
| 380 | */ |
| 381 | static void __devexit cpqarray_remove_one_eisa (int i) |
| 382 | { |
| 383 | if (hba[i] == NULL) { |
| 384 | printk(KERN_ERR "cpqarray: controller %d appears to have" |
| 385 | "already been removed \n", i); |
| 386 | return; |
| 387 | } |
| 388 | cpqarray_remove_one(i); |
| 389 | } |
| 390 | |
| 391 | /* pdev is NULL for eisa */ |
Andrew Morton | bc64863 | 2006-06-25 05:47:45 -0700 | [diff] [blame] | 392 | static int __init cpqarray_register_ctlr( int i, struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | { |
Jens Axboe | 165125e | 2007-07-24 09:28:11 +0200 | [diff] [blame] | 394 | struct request_queue *q; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | int j; |
| 396 | |
| 397 | /* |
| 398 | * register block devices |
| 399 | * Find disks and fill in structs |
| 400 | * Get an interrupt, set the Q depth and get into /proc |
| 401 | */ |
| 402 | |
| 403 | /* If this successful it should insure that we are the only */ |
| 404 | /* instance of the driver */ |
| 405 | if (register_blkdev(COMPAQ_SMART2_MAJOR+i, hba[i]->devname)) { |
| 406 | goto Enomem4; |
| 407 | } |
| 408 | hba[i]->access.set_intr_mask(hba[i], 0); |
| 409 | if (request_irq(hba[i]->intr, do_ida_intr, |
Thomas Gleixner | 69ab391 | 2006-07-01 19:29:32 -0700 | [diff] [blame] | 410 | IRQF_DISABLED|IRQF_SHARED, hba[i]->devname, hba[i])) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 411 | { |
| 412 | printk(KERN_ERR "cpqarray: Unable to get irq %d for %s\n", |
| 413 | hba[i]->intr, hba[i]->devname); |
| 414 | goto Enomem3; |
| 415 | } |
| 416 | |
| 417 | for (j=0; j<NWD; j++) { |
| 418 | ida_gendisk[i][j] = alloc_disk(1 << NWD_SHIFT); |
| 419 | if (!ida_gendisk[i][j]) |
| 420 | goto Enomem2; |
| 421 | } |
| 422 | |
Mariusz Kozlowski | 2e4934a | 2007-08-11 22:34:30 +0200 | [diff] [blame] | 423 | hba[i]->cmd_pool = pci_alloc_consistent( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | hba[i]->pci_dev, NR_CMDS * sizeof(cmdlist_t), |
| 425 | &(hba[i]->cmd_pool_dhandle)); |
Mariusz Kozlowski | 2e4934a | 2007-08-11 22:34:30 +0200 | [diff] [blame] | 426 | hba[i]->cmd_pool_bits = kcalloc( |
Julia Lawall | 061837b | 2008-09-22 14:57:16 -0700 | [diff] [blame] | 427 | DIV_ROUND_UP(NR_CMDS, BITS_PER_LONG), sizeof(unsigned long), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | GFP_KERNEL); |
| 429 | |
| 430 | if (!hba[i]->cmd_pool_bits || !hba[i]->cmd_pool) |
| 431 | goto Enomem1; |
| 432 | |
| 433 | memset(hba[i]->cmd_pool, 0, NR_CMDS * sizeof(cmdlist_t)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | printk(KERN_INFO "cpqarray: Finding drives on %s", |
| 435 | hba[i]->devname); |
| 436 | |
| 437 | spin_lock_init(&hba[i]->lock); |
| 438 | q = blk_init_queue(do_ida_request, &hba[i]->lock); |
| 439 | if (!q) |
| 440 | goto Enomem1; |
| 441 | |
| 442 | hba[i]->queue = q; |
| 443 | q->queuedata = hba[i]; |
| 444 | |
| 445 | getgeometry(i); |
| 446 | start_fwbk(i); |
| 447 | |
| 448 | ida_procinit(i); |
| 449 | |
| 450 | if (pdev) |
| 451 | blk_queue_bounce_limit(q, hba[i]->pci_dev->dma_mask); |
| 452 | |
| 453 | /* This is a hardware imposed limit. */ |
| 454 | blk_queue_max_hw_segments(q, SG_MAX); |
| 455 | |
| 456 | /* This is a driver limit and could be eliminated. */ |
| 457 | blk_queue_max_phys_segments(q, SG_MAX); |
| 458 | |
| 459 | init_timer(&hba[i]->timer); |
| 460 | hba[i]->timer.expires = jiffies + IDA_TIMER; |
| 461 | hba[i]->timer.data = (unsigned long)hba[i]; |
| 462 | hba[i]->timer.function = ida_timer; |
| 463 | add_timer(&hba[i]->timer); |
| 464 | |
| 465 | /* Enable IRQ now that spinlock and rate limit timer are set up */ |
| 466 | hba[i]->access.set_intr_mask(hba[i], FIFO_NOT_EMPTY); |
| 467 | |
| 468 | for(j=0; j<NWD; j++) { |
| 469 | struct gendisk *disk = ida_gendisk[i][j]; |
| 470 | drv_info_t *drv = &hba[i]->drv[j]; |
| 471 | sprintf(disk->disk_name, "ida/c%dd%d", i, j); |
| 472 | disk->major = COMPAQ_SMART2_MAJOR + i; |
| 473 | disk->first_minor = j<<NWD_SHIFT; |
| 474 | disk->fops = &ida_fops; |
| 475 | if (j && !drv->nr_blks) |
| 476 | continue; |
| 477 | blk_queue_hardsect_size(hba[i]->queue, drv->blk_size); |
| 478 | set_capacity(disk, drv->nr_blks); |
| 479 | disk->queue = hba[i]->queue; |
| 480 | disk->private_data = drv; |
| 481 | add_disk(disk); |
| 482 | } |
| 483 | |
| 484 | /* done ! */ |
| 485 | return(i); |
| 486 | |
| 487 | Enomem1: |
| 488 | nr_ctlr = i; |
| 489 | kfree(hba[i]->cmd_pool_bits); |
| 490 | if (hba[i]->cmd_pool) |
| 491 | pci_free_consistent(hba[i]->pci_dev, NR_CMDS*sizeof(cmdlist_t), |
| 492 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); |
| 493 | Enomem2: |
| 494 | while (j--) { |
| 495 | put_disk(ida_gendisk[i][j]); |
| 496 | ida_gendisk[i][j] = NULL; |
| 497 | } |
| 498 | free_irq(hba[i]->intr, hba[i]); |
| 499 | Enomem3: |
| 500 | unregister_blkdev(COMPAQ_SMART2_MAJOR+i, hba[i]->devname); |
| 501 | Enomem4: |
| 502 | if (pdev) |
| 503 | pci_set_drvdata(pdev, NULL); |
| 504 | release_io_mem(hba[i]); |
| 505 | free_hba(i); |
| 506 | |
| 507 | printk( KERN_ERR "cpqarray: out of memory"); |
| 508 | |
| 509 | return -1; |
| 510 | } |
| 511 | |
| 512 | static int __init cpqarray_init_one( struct pci_dev *pdev, |
| 513 | const struct pci_device_id *ent) |
| 514 | { |
| 515 | int i; |
| 516 | |
| 517 | printk(KERN_DEBUG "cpqarray: Device 0x%x has been found at" |
| 518 | " bus %d dev %d func %d\n", |
| 519 | pdev->device, pdev->bus->number, PCI_SLOT(pdev->devfn), |
| 520 | PCI_FUNC(pdev->devfn)); |
| 521 | i = alloc_cpqarray_hba(); |
| 522 | if( i < 0 ) |
| 523 | return (-1); |
| 524 | memset(hba[i], 0, sizeof(ctlr_info_t)); |
| 525 | sprintf(hba[i]->devname, "ida%d", i); |
| 526 | hba[i]->ctlr = i; |
| 527 | /* Initialize the pdev driver private data */ |
| 528 | pci_set_drvdata(pdev, hba[i]); |
| 529 | |
| 530 | if (cpqarray_pci_init(hba[i], pdev) != 0) { |
| 531 | pci_set_drvdata(pdev, NULL); |
| 532 | release_io_mem(hba[i]); |
| 533 | free_hba(i); |
| 534 | return -1; |
| 535 | } |
| 536 | |
| 537 | return (cpqarray_register_ctlr(i, pdev)); |
| 538 | } |
| 539 | |
| 540 | static struct pci_driver cpqarray_pci_driver = { |
| 541 | .name = "cpqarray", |
| 542 | .probe = cpqarray_init_one, |
| 543 | .remove = __devexit_p(cpqarray_remove_one_pci), |
| 544 | .id_table = cpqarray_pci_device_id, |
| 545 | }; |
| 546 | |
| 547 | /* |
| 548 | * This is it. Find all the controllers and register them. |
| 549 | * returns the number of block devices registered. |
| 550 | */ |
| 551 | static int __init cpqarray_init(void) |
| 552 | { |
| 553 | int num_cntlrs_reg = 0; |
| 554 | int i; |
| 555 | int rc = 0; |
| 556 | |
| 557 | /* detect controllers */ |
| 558 | printk(DRIVER_NAME "\n"); |
| 559 | |
| 560 | rc = pci_register_driver(&cpqarray_pci_driver); |
| 561 | if (rc) |
| 562 | return rc; |
| 563 | cpqarray_eisa_detect(); |
| 564 | |
| 565 | for (i=0; i < MAX_CTLR; i++) { |
| 566 | if (hba[i] != NULL) |
| 567 | num_cntlrs_reg++; |
| 568 | } |
| 569 | |
| 570 | return(num_cntlrs_reg); |
| 571 | } |
| 572 | |
| 573 | /* Function to find the first free pointer into our hba[] array */ |
| 574 | /* Returns -1 if no free entries are left. */ |
| 575 | static int alloc_cpqarray_hba(void) |
| 576 | { |
| 577 | int i; |
| 578 | |
| 579 | for(i=0; i< MAX_CTLR; i++) { |
| 580 | if (hba[i] == NULL) { |
| 581 | hba[i] = kmalloc(sizeof(ctlr_info_t), GFP_KERNEL); |
| 582 | if(hba[i]==NULL) { |
| 583 | printk(KERN_ERR "cpqarray: out of memory.\n"); |
| 584 | return (-1); |
| 585 | } |
| 586 | return (i); |
| 587 | } |
| 588 | } |
| 589 | printk(KERN_WARNING "cpqarray: This driver supports a maximum" |
| 590 | " of 8 controllers.\n"); |
| 591 | return(-1); |
| 592 | } |
| 593 | |
| 594 | static void free_hba(int i) |
| 595 | { |
| 596 | kfree(hba[i]); |
| 597 | hba[i]=NULL; |
| 598 | } |
| 599 | |
| 600 | /* |
| 601 | * Find the IO address of the controller, its IRQ and so forth. Fill |
| 602 | * in some basic stuff into the ctlr_info_t structure. |
| 603 | */ |
| 604 | static int cpqarray_pci_init(ctlr_info_t *c, struct pci_dev *pdev) |
| 605 | { |
| 606 | ushort vendor_id, device_id, command; |
| 607 | unchar cache_line_size, latency_timer; |
| 608 | unchar irq, revision; |
| 609 | unsigned long addr[6]; |
| 610 | __u32 board_id; |
| 611 | |
| 612 | int i; |
| 613 | |
| 614 | c->pci_dev = pdev; |
| 615 | if (pci_enable_device(pdev)) { |
| 616 | printk(KERN_ERR "cpqarray: Unable to Enable PCI device\n"); |
| 617 | return -1; |
| 618 | } |
| 619 | vendor_id = pdev->vendor; |
| 620 | device_id = pdev->device; |
| 621 | irq = pdev->irq; |
| 622 | |
| 623 | for(i=0; i<6; i++) |
| 624 | addr[i] = pci_resource_start(pdev, i); |
| 625 | |
| 626 | if (pci_set_dma_mask(pdev, CPQARRAY_DMA_MASK) != 0) |
| 627 | { |
| 628 | printk(KERN_ERR "cpqarray: Unable to set DMA mask\n"); |
| 629 | return -1; |
| 630 | } |
| 631 | |
| 632 | pci_read_config_word(pdev, PCI_COMMAND, &command); |
| 633 | pci_read_config_byte(pdev, PCI_CLASS_REVISION, &revision); |
| 634 | pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &cache_line_size); |
| 635 | pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &latency_timer); |
| 636 | |
| 637 | pci_read_config_dword(pdev, 0x2c, &board_id); |
| 638 | |
| 639 | /* check to see if controller has been disabled */ |
| 640 | if(!(command & 0x02)) { |
| 641 | printk(KERN_WARNING |
| 642 | "cpqarray: controller appears to be disabled\n"); |
| 643 | return(-1); |
| 644 | } |
| 645 | |
| 646 | DBGINFO( |
| 647 | printk("vendor_id = %x\n", vendor_id); |
| 648 | printk("device_id = %x\n", device_id); |
| 649 | printk("command = %x\n", command); |
| 650 | for(i=0; i<6; i++) |
| 651 | printk("addr[%d] = %lx\n", i, addr[i]); |
| 652 | printk("revision = %x\n", revision); |
| 653 | printk("irq = %x\n", irq); |
| 654 | printk("cache_line_size = %x\n", cache_line_size); |
| 655 | printk("latency_timer = %x\n", latency_timer); |
| 656 | printk("board_id = %x\n", board_id); |
| 657 | ); |
| 658 | |
| 659 | c->intr = irq; |
| 660 | |
| 661 | for(i=0; i<6; i++) { |
| 662 | if (pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE_IO) |
| 663 | { /* IO space */ |
| 664 | c->io_mem_addr = addr[i]; |
| 665 | c->io_mem_length = pci_resource_end(pdev, i) |
| 666 | - pci_resource_start(pdev, i) + 1; |
| 667 | if(!request_region( c->io_mem_addr, c->io_mem_length, |
| 668 | "cpqarray")) |
| 669 | { |
| 670 | printk( KERN_WARNING "cpqarray I/O memory range already in use addr %lx length = %ld\n", c->io_mem_addr, c->io_mem_length); |
| 671 | c->io_mem_addr = 0; |
| 672 | c->io_mem_length = 0; |
| 673 | } |
| 674 | break; |
| 675 | } |
| 676 | } |
| 677 | |
| 678 | c->paddr = 0; |
| 679 | for(i=0; i<6; i++) |
| 680 | if (!(pci_resource_flags(pdev, i) & |
| 681 | PCI_BASE_ADDRESS_SPACE_IO)) { |
| 682 | c->paddr = pci_resource_start (pdev, i); |
| 683 | break; |
| 684 | } |
| 685 | if (!c->paddr) |
| 686 | return -1; |
| 687 | c->vaddr = remap_pci_mem(c->paddr, 128); |
| 688 | if (!c->vaddr) |
| 689 | return -1; |
| 690 | c->board_id = board_id; |
| 691 | |
| 692 | for(i=0; i<NR_PRODUCTS; i++) { |
| 693 | if (board_id == products[i].board_id) { |
| 694 | c->product_name = products[i].product_name; |
| 695 | c->access = *(products[i].access); |
| 696 | break; |
| 697 | } |
| 698 | } |
| 699 | if (i == NR_PRODUCTS) { |
| 700 | printk(KERN_WARNING "cpqarray: Sorry, I don't know how" |
| 701 | " to access the SMART Array controller %08lx\n", |
| 702 | (unsigned long)board_id); |
| 703 | return -1; |
| 704 | } |
| 705 | |
| 706 | return 0; |
| 707 | } |
| 708 | |
| 709 | /* |
| 710 | * Map (physical) PCI mem into (virtual) kernel space |
| 711 | */ |
| 712 | static void __iomem *remap_pci_mem(ulong base, ulong size) |
| 713 | { |
| 714 | ulong page_base = ((ulong) base) & PAGE_MASK; |
| 715 | ulong page_offs = ((ulong) base) - page_base; |
| 716 | void __iomem *page_remapped = ioremap(page_base, page_offs+size); |
| 717 | |
| 718 | return (page_remapped ? (page_remapped + page_offs) : NULL); |
| 719 | } |
| 720 | |
| 721 | #ifndef MODULE |
| 722 | /* |
| 723 | * Config string is a comma separated set of i/o addresses of EISA cards. |
| 724 | */ |
| 725 | static int cpqarray_setup(char *str) |
| 726 | { |
| 727 | int i, ints[9]; |
| 728 | |
| 729 | (void)get_options(str, ARRAY_SIZE(ints), ints); |
| 730 | |
| 731 | for(i=0; i<ints[0] && i<8; i++) |
| 732 | eisa[i] = ints[i+1]; |
| 733 | return 1; |
| 734 | } |
| 735 | |
| 736 | __setup("smart2=", cpqarray_setup); |
| 737 | |
| 738 | #endif |
| 739 | |
| 740 | /* |
| 741 | * Find an EISA controller's signature. Set up an hba if we find it. |
| 742 | */ |
Andrew Morton | bc64863 | 2006-06-25 05:47:45 -0700 | [diff] [blame] | 743 | static int __init cpqarray_eisa_detect(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 744 | { |
| 745 | int i=0, j; |
| 746 | __u32 board_id; |
| 747 | int intr; |
| 748 | int ctlr; |
| 749 | int num_ctlr = 0; |
| 750 | |
| 751 | while(i<8 && eisa[i]) { |
| 752 | ctlr = alloc_cpqarray_hba(); |
| 753 | if(ctlr == -1) |
| 754 | break; |
| 755 | board_id = inl(eisa[i]+0xC80); |
| 756 | for(j=0; j < NR_PRODUCTS; j++) |
| 757 | if (board_id == products[j].board_id) |
| 758 | break; |
| 759 | |
| 760 | if (j == NR_PRODUCTS) { |
| 761 | printk(KERN_WARNING "cpqarray: Sorry, I don't know how" |
| 762 | " to access the SMART Array controller %08lx\n", (unsigned long)board_id); |
| 763 | continue; |
| 764 | } |
| 765 | |
| 766 | memset(hba[ctlr], 0, sizeof(ctlr_info_t)); |
| 767 | hba[ctlr]->io_mem_addr = eisa[i]; |
| 768 | hba[ctlr]->io_mem_length = 0x7FF; |
| 769 | if(!request_region(hba[ctlr]->io_mem_addr, |
| 770 | hba[ctlr]->io_mem_length, |
| 771 | "cpqarray")) |
| 772 | { |
| 773 | printk(KERN_WARNING "cpqarray: I/O range already in " |
| 774 | "use addr = %lx length = %ld\n", |
| 775 | hba[ctlr]->io_mem_addr, |
| 776 | hba[ctlr]->io_mem_length); |
| 777 | free_hba(ctlr); |
| 778 | continue; |
| 779 | } |
| 780 | |
| 781 | /* |
| 782 | * Read the config register to find our interrupt |
| 783 | */ |
| 784 | intr = inb(eisa[i]+0xCC0) >> 4; |
| 785 | if (intr & 1) intr = 11; |
| 786 | else if (intr & 2) intr = 10; |
| 787 | else if (intr & 4) intr = 14; |
| 788 | else if (intr & 8) intr = 15; |
| 789 | |
| 790 | hba[ctlr]->intr = intr; |
| 791 | sprintf(hba[ctlr]->devname, "ida%d", nr_ctlr); |
| 792 | hba[ctlr]->product_name = products[j].product_name; |
| 793 | hba[ctlr]->access = *(products[j].access); |
| 794 | hba[ctlr]->ctlr = ctlr; |
| 795 | hba[ctlr]->board_id = board_id; |
| 796 | hba[ctlr]->pci_dev = NULL; /* not PCI */ |
| 797 | |
| 798 | DBGINFO( |
| 799 | printk("i = %d, j = %d\n", i, j); |
| 800 | printk("irq = %x\n", intr); |
| 801 | printk("product name = %s\n", products[j].product_name); |
| 802 | printk("board_id = %x\n", board_id); |
| 803 | ); |
| 804 | |
| 805 | num_ctlr++; |
| 806 | i++; |
| 807 | |
| 808 | if (cpqarray_register_ctlr(ctlr, NULL) == -1) |
| 809 | printk(KERN_WARNING |
| 810 | "cpqarray: Can't register EISA controller %d\n", |
| 811 | ctlr); |
| 812 | |
| 813 | } |
| 814 | |
| 815 | return num_ctlr; |
| 816 | } |
| 817 | |
| 818 | /* |
| 819 | * Open. Make sure the device is really there. |
| 820 | */ |
| 821 | static int ida_open(struct inode *inode, struct file *filep) |
| 822 | { |
| 823 | drv_info_t *drv = get_drv(inode->i_bdev->bd_disk); |
| 824 | ctlr_info_t *host = get_host(inode->i_bdev->bd_disk); |
| 825 | |
| 826 | DBGINFO(printk("ida_open %s\n", inode->i_bdev->bd_disk->disk_name)); |
| 827 | /* |
| 828 | * Root is allowed to open raw volume zero even if it's not configured |
| 829 | * so array config can still work. I don't think I really like this, |
| 830 | * but I'm already using way to many device nodes to claim another one |
| 831 | * for "raw controller". |
| 832 | */ |
| 833 | if (!drv->nr_blks) { |
| 834 | if (!capable(CAP_SYS_RAWIO)) |
| 835 | return -ENXIO; |
| 836 | if (!capable(CAP_SYS_ADMIN) && drv != host->drv) |
| 837 | return -ENXIO; |
| 838 | } |
| 839 | host->usage_count++; |
| 840 | return 0; |
| 841 | } |
| 842 | |
| 843 | /* |
| 844 | * Close. Sync first. |
| 845 | */ |
| 846 | static int ida_release(struct inode *inode, struct file *filep) |
| 847 | { |
| 848 | ctlr_info_t *host = get_host(inode->i_bdev->bd_disk); |
| 849 | host->usage_count--; |
| 850 | return 0; |
| 851 | } |
| 852 | |
| 853 | /* |
| 854 | * Enqueuing and dequeuing functions for cmdlists. |
| 855 | */ |
| 856 | static inline void addQ(cmdlist_t **Qptr, cmdlist_t *c) |
| 857 | { |
| 858 | if (*Qptr == NULL) { |
| 859 | *Qptr = c; |
| 860 | c->next = c->prev = c; |
| 861 | } else { |
| 862 | c->prev = (*Qptr)->prev; |
| 863 | c->next = (*Qptr); |
| 864 | (*Qptr)->prev->next = c; |
| 865 | (*Qptr)->prev = c; |
| 866 | } |
| 867 | } |
| 868 | |
| 869 | static inline cmdlist_t *removeQ(cmdlist_t **Qptr, cmdlist_t *c) |
| 870 | { |
| 871 | if (c && c->next != c) { |
| 872 | if (*Qptr == c) *Qptr = c->next; |
| 873 | c->prev->next = c->next; |
| 874 | c->next->prev = c->prev; |
| 875 | } else { |
| 876 | *Qptr = NULL; |
| 877 | } |
| 878 | return c; |
| 879 | } |
| 880 | |
| 881 | /* |
| 882 | * Get a request and submit it to the controller. |
| 883 | * This routine needs to grab all the requests it possibly can from the |
| 884 | * req Q and submit them. Interrupts are off (and need to be off) when you |
| 885 | * are in here (either via the dummy do_ida_request functions or by being |
| 886 | * called from the interrupt handler |
| 887 | */ |
Jens Axboe | 165125e | 2007-07-24 09:28:11 +0200 | [diff] [blame] | 888 | static void do_ida_request(struct request_queue *q) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 889 | { |
| 890 | ctlr_info_t *h = q->queuedata; |
| 891 | cmdlist_t *c; |
| 892 | struct request *creq; |
| 893 | struct scatterlist tmp_sg[SG_MAX]; |
| 894 | int i, dir, seg; |
| 895 | |
| 896 | if (blk_queue_plugged(q)) |
| 897 | goto startio; |
| 898 | |
| 899 | queue_next: |
| 900 | creq = elv_next_request(q); |
| 901 | if (!creq) |
| 902 | goto startio; |
| 903 | |
Eric Sesterhenn | 089fe1b | 2006-03-24 18:50:27 +0100 | [diff] [blame] | 904 | BUG_ON(creq->nr_phys_segments > SG_MAX); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 905 | |
| 906 | if ((c = cmd_alloc(h,1)) == NULL) |
| 907 | goto startio; |
| 908 | |
| 909 | blkdev_dequeue_request(creq); |
| 910 | |
| 911 | c->ctlr = h->ctlr; |
| 912 | c->hdr.unit = (drv_info_t *)(creq->rq_disk->private_data) - h->drv; |
| 913 | c->hdr.size = sizeof(rblk_t) >> 2; |
| 914 | c->size += sizeof(rblk_t); |
| 915 | |
| 916 | c->req.hdr.blk = creq->sector; |
| 917 | c->rq = creq; |
| 918 | DBGPX( |
| 919 | printk("sector=%d, nr_sectors=%d\n", creq->sector, creq->nr_sectors); |
| 920 | ); |
Jens Axboe | 45711f1 | 2007-10-22 21:19:53 +0200 | [diff] [blame] | 921 | sg_init_table(tmp_sg, SG_MAX); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 922 | seg = blk_rq_map_sg(q, creq, tmp_sg); |
| 923 | |
| 924 | /* Now do all the DMA Mappings */ |
| 925 | if (rq_data_dir(creq) == READ) |
| 926 | dir = PCI_DMA_FROMDEVICE; |
| 927 | else |
| 928 | dir = PCI_DMA_TODEVICE; |
| 929 | for( i=0; i < seg; i++) |
| 930 | { |
| 931 | c->req.sg[i].size = tmp_sg[i].length; |
| 932 | c->req.sg[i].addr = (__u32) pci_map_page(h->pci_dev, |
Jens Axboe | 45711f1 | 2007-10-22 21:19:53 +0200 | [diff] [blame] | 933 | sg_page(&tmp_sg[i]), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 934 | tmp_sg[i].offset, |
| 935 | tmp_sg[i].length, dir); |
| 936 | } |
| 937 | DBGPX( printk("Submitting %d sectors in %d segments\n", creq->nr_sectors, seg); ); |
| 938 | c->req.hdr.sg_cnt = seg; |
| 939 | c->req.hdr.blk_cnt = creq->nr_sectors; |
| 940 | c->req.hdr.cmd = (rq_data_dir(creq) == READ) ? IDA_READ : IDA_WRITE; |
| 941 | c->type = CMD_RWREQ; |
| 942 | |
| 943 | /* Put the request on the tail of the request queue */ |
| 944 | addQ(&h->reqQ, c); |
| 945 | h->Qdepth++; |
| 946 | if (h->Qdepth > h->maxQsinceinit) |
| 947 | h->maxQsinceinit = h->Qdepth; |
| 948 | |
| 949 | goto queue_next; |
| 950 | |
| 951 | startio: |
| 952 | start_io(h); |
| 953 | } |
| 954 | |
| 955 | /* |
| 956 | * start_io submits everything on a controller's request queue |
| 957 | * and moves it to the completion queue. |
| 958 | * |
| 959 | * Interrupts had better be off if you're in here |
| 960 | */ |
| 961 | static void start_io(ctlr_info_t *h) |
| 962 | { |
| 963 | cmdlist_t *c; |
| 964 | |
| 965 | while((c = h->reqQ) != NULL) { |
| 966 | /* Can't do anything if we're busy */ |
| 967 | if (h->access.fifo_full(h) == 0) |
| 968 | return; |
| 969 | |
| 970 | /* Get the first entry from the request Q */ |
| 971 | removeQ(&h->reqQ, c); |
| 972 | h->Qdepth--; |
| 973 | |
| 974 | /* Tell the controller to do our bidding */ |
| 975 | h->access.submit_command(h, c); |
| 976 | |
| 977 | /* Get onto the completion Q */ |
| 978 | addQ(&h->cmpQ, c); |
| 979 | } |
| 980 | } |
| 981 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 982 | /* |
| 983 | * Mark all buffers that cmd was responsible for |
| 984 | */ |
| 985 | static inline void complete_command(cmdlist_t *cmd, int timeout) |
| 986 | { |
Jens Axboe | 1f794b6 | 2006-11-14 12:36:45 +0100 | [diff] [blame] | 987 | struct request *rq = cmd->rq; |
Kiyoshi Ueda | ea6f06f | 2007-12-11 17:50:21 -0500 | [diff] [blame] | 988 | int error = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 989 | int i, ddir; |
| 990 | |
| 991 | if (cmd->req.hdr.rcode & RCODE_NONFATAL && |
| 992 | (hba[cmd->ctlr]->misc_tflags & MISC_NONFATAL_WARN) == 0) { |
| 993 | printk(KERN_NOTICE "Non Fatal error on ida/c%dd%d\n", |
| 994 | cmd->ctlr, cmd->hdr.unit); |
| 995 | hba[cmd->ctlr]->misc_tflags |= MISC_NONFATAL_WARN; |
| 996 | } |
| 997 | if (cmd->req.hdr.rcode & RCODE_FATAL) { |
| 998 | printk(KERN_WARNING "Fatal error on ida/c%dd%d\n", |
| 999 | cmd->ctlr, cmd->hdr.unit); |
Kiyoshi Ueda | ea6f06f | 2007-12-11 17:50:21 -0500 | [diff] [blame] | 1000 | error = -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1001 | } |
| 1002 | if (cmd->req.hdr.rcode & RCODE_INVREQ) { |
| 1003 | printk(KERN_WARNING "Invalid request on ida/c%dd%d = (cmd=%x sect=%d cnt=%d sg=%d ret=%x)\n", |
| 1004 | cmd->ctlr, cmd->hdr.unit, cmd->req.hdr.cmd, |
| 1005 | cmd->req.hdr.blk, cmd->req.hdr.blk_cnt, |
| 1006 | cmd->req.hdr.sg_cnt, cmd->req.hdr.rcode); |
Kiyoshi Ueda | ea6f06f | 2007-12-11 17:50:21 -0500 | [diff] [blame] | 1007 | error = -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1008 | } |
Kiyoshi Ueda | ea6f06f | 2007-12-11 17:50:21 -0500 | [diff] [blame] | 1009 | if (timeout) |
| 1010 | error = -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1011 | /* unmap the DMA mapping for all the scatter gather elements */ |
| 1012 | if (cmd->req.hdr.cmd == IDA_READ) |
| 1013 | ddir = PCI_DMA_FROMDEVICE; |
| 1014 | else |
| 1015 | ddir = PCI_DMA_TODEVICE; |
| 1016 | for(i=0; i<cmd->req.hdr.sg_cnt; i++) |
| 1017 | pci_unmap_page(hba[cmd->ctlr]->pci_dev, cmd->req.sg[i].addr, |
| 1018 | cmd->req.sg[i].size, ddir); |
| 1019 | |
Jens Axboe | 1f794b6 | 2006-11-14 12:36:45 +0100 | [diff] [blame] | 1020 | DBGPX(printk("Done with %p\n", rq);); |
Kiyoshi Ueda | ea6f06f | 2007-12-11 17:50:21 -0500 | [diff] [blame] | 1021 | if (__blk_end_request(rq, error, blk_rq_bytes(rq))) |
| 1022 | BUG(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1023 | } |
| 1024 | |
| 1025 | /* |
| 1026 | * The controller will interrupt us upon completion of commands. |
| 1027 | * Find the command on the completion queue, remove it, tell the OS and |
| 1028 | * try to queue up more IO |
| 1029 | */ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1030 | static irqreturn_t do_ida_intr(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1031 | { |
| 1032 | ctlr_info_t *h = dev_id; |
| 1033 | cmdlist_t *c; |
| 1034 | unsigned long istat; |
| 1035 | unsigned long flags; |
| 1036 | __u32 a,a1; |
| 1037 | |
| 1038 | istat = h->access.intr_pending(h); |
| 1039 | /* Is this interrupt for us? */ |
| 1040 | if (istat == 0) |
| 1041 | return IRQ_NONE; |
| 1042 | |
| 1043 | /* |
| 1044 | * If there are completed commands in the completion queue, |
| 1045 | * we had better do something about it. |
| 1046 | */ |
| 1047 | spin_lock_irqsave(IDA_LOCK(h->ctlr), flags); |
| 1048 | if (istat & FIFO_NOT_EMPTY) { |
| 1049 | while((a = h->access.command_completed(h))) { |
| 1050 | a1 = a; a &= ~3; |
| 1051 | if ((c = h->cmpQ) == NULL) |
| 1052 | { |
| 1053 | printk(KERN_WARNING "cpqarray: Completion of %08lx ignored\n", (unsigned long)a1); |
| 1054 | continue; |
| 1055 | } |
| 1056 | while(c->busaddr != a) { |
| 1057 | c = c->next; |
| 1058 | if (c == h->cmpQ) |
| 1059 | break; |
| 1060 | } |
| 1061 | /* |
| 1062 | * If we've found the command, take it off the |
| 1063 | * completion Q and free it |
| 1064 | */ |
| 1065 | if (c->busaddr == a) { |
| 1066 | removeQ(&h->cmpQ, c); |
| 1067 | /* Check for invalid command. |
| 1068 | * Controller returns command error, |
| 1069 | * But rcode = 0. |
| 1070 | */ |
| 1071 | |
| 1072 | if((a1 & 0x03) && (c->req.hdr.rcode == 0)) |
| 1073 | { |
| 1074 | c->req.hdr.rcode = RCODE_INVREQ; |
| 1075 | } |
| 1076 | if (c->type == CMD_RWREQ) { |
| 1077 | complete_command(c, 0); |
| 1078 | cmd_free(h, c, 1); |
| 1079 | } else if (c->type == CMD_IOCTL_PEND) { |
| 1080 | c->type = CMD_IOCTL_DONE; |
| 1081 | } |
| 1082 | continue; |
| 1083 | } |
| 1084 | } |
| 1085 | } |
| 1086 | |
| 1087 | /* |
| 1088 | * See if we can queue up some more IO |
| 1089 | */ |
| 1090 | do_ida_request(h->queue); |
| 1091 | spin_unlock_irqrestore(IDA_LOCK(h->ctlr), flags); |
| 1092 | return IRQ_HANDLED; |
| 1093 | } |
| 1094 | |
| 1095 | /* |
| 1096 | * This timer was for timing out requests that haven't happened after |
| 1097 | * IDA_TIMEOUT. That wasn't such a good idea. This timer is used to |
| 1098 | * reset a flags structure so we don't flood the user with |
| 1099 | * "Non-Fatal error" messages. |
| 1100 | */ |
| 1101 | static void ida_timer(unsigned long tdata) |
| 1102 | { |
| 1103 | ctlr_info_t *h = (ctlr_info_t*)tdata; |
| 1104 | |
| 1105 | h->timer.expires = jiffies + IDA_TIMER; |
| 1106 | add_timer(&h->timer); |
| 1107 | h->misc_tflags = 0; |
| 1108 | } |
| 1109 | |
Christoph Hellwig | a885c8c | 2006-01-08 01:02:50 -0800 | [diff] [blame] | 1110 | static int ida_getgeo(struct block_device *bdev, struct hd_geometry *geo) |
| 1111 | { |
| 1112 | drv_info_t *drv = get_drv(bdev->bd_disk); |
| 1113 | |
| 1114 | if (drv->cylinders) { |
| 1115 | geo->heads = drv->heads; |
| 1116 | geo->sectors = drv->sectors; |
| 1117 | geo->cylinders = drv->cylinders; |
| 1118 | } else { |
| 1119 | geo->heads = 0xff; |
| 1120 | geo->sectors = 0x3f; |
| 1121 | geo->cylinders = drv->nr_blks / (0xff*0x3f); |
| 1122 | } |
| 1123 | |
| 1124 | return 0; |
| 1125 | } |
| 1126 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1127 | /* |
| 1128 | * ida_ioctl does some miscellaneous stuff like reporting drive geometry, |
| 1129 | * setting readahead and submitting commands from userspace to the controller. |
| 1130 | */ |
| 1131 | static int ida_ioctl(struct inode *inode, struct file *filep, unsigned int cmd, unsigned long arg) |
| 1132 | { |
| 1133 | drv_info_t *drv = get_drv(inode->i_bdev->bd_disk); |
| 1134 | ctlr_info_t *host = get_host(inode->i_bdev->bd_disk); |
| 1135 | int error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1136 | ida_ioctl_t __user *io = (ida_ioctl_t __user *)arg; |
| 1137 | ida_ioctl_t *my_io; |
| 1138 | |
| 1139 | switch(cmd) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1140 | case IDAGETDRVINFO: |
| 1141 | if (copy_to_user(&io->c.drv, drv, sizeof(drv_info_t))) |
| 1142 | return -EFAULT; |
| 1143 | return 0; |
| 1144 | case IDAPASSTHRU: |
| 1145 | if (!capable(CAP_SYS_RAWIO)) |
| 1146 | return -EPERM; |
| 1147 | my_io = kmalloc(sizeof(ida_ioctl_t), GFP_KERNEL); |
| 1148 | if (!my_io) |
| 1149 | return -ENOMEM; |
| 1150 | error = -EFAULT; |
| 1151 | if (copy_from_user(my_io, io, sizeof(*my_io))) |
| 1152 | goto out_passthru; |
| 1153 | error = ida_ctlr_ioctl(host, drv - host->drv, my_io); |
| 1154 | if (error) |
| 1155 | goto out_passthru; |
| 1156 | error = -EFAULT; |
| 1157 | if (copy_to_user(io, my_io, sizeof(*my_io))) |
| 1158 | goto out_passthru; |
| 1159 | error = 0; |
| 1160 | out_passthru: |
| 1161 | kfree(my_io); |
| 1162 | return error; |
| 1163 | case IDAGETCTLRSIG: |
| 1164 | if (!arg) return -EINVAL; |
| 1165 | put_user(host->ctlr_sig, (int __user *)arg); |
| 1166 | return 0; |
| 1167 | case IDAREVALIDATEVOLS: |
| 1168 | if (iminor(inode) != 0) |
| 1169 | return -ENXIO; |
| 1170 | return revalidate_allvol(host); |
| 1171 | case IDADRIVERVERSION: |
| 1172 | if (!arg) return -EINVAL; |
| 1173 | put_user(DRIVER_VERSION, (unsigned long __user *)arg); |
| 1174 | return 0; |
| 1175 | case IDAGETPCIINFO: |
| 1176 | { |
| 1177 | |
| 1178 | ida_pci_info_struct pciinfo; |
| 1179 | |
| 1180 | if (!arg) return -EINVAL; |
| 1181 | pciinfo.bus = host->pci_dev->bus->number; |
| 1182 | pciinfo.dev_fn = host->pci_dev->devfn; |
| 1183 | pciinfo.board_id = host->board_id; |
| 1184 | if(copy_to_user((void __user *) arg, &pciinfo, |
| 1185 | sizeof( ida_pci_info_struct))) |
| 1186 | return -EFAULT; |
| 1187 | return(0); |
| 1188 | } |
| 1189 | |
| 1190 | default: |
| 1191 | return -EINVAL; |
| 1192 | } |
| 1193 | |
| 1194 | } |
| 1195 | /* |
| 1196 | * ida_ctlr_ioctl is for passing commands to the controller from userspace. |
| 1197 | * The command block (io) has already been copied to kernel space for us, |
| 1198 | * however, any elements in the sglist need to be copied to kernel space |
| 1199 | * or copied back to userspace. |
| 1200 | * |
| 1201 | * Only root may perform a controller passthru command, however I'm not doing |
| 1202 | * any serious sanity checking on the arguments. Doing an IDA_WRITE_MEDIA and |
| 1203 | * putting a 64M buffer in the sglist is probably a *bad* idea. |
| 1204 | */ |
| 1205 | static int ida_ctlr_ioctl(ctlr_info_t *h, int dsk, ida_ioctl_t *io) |
| 1206 | { |
| 1207 | int ctlr = h->ctlr; |
| 1208 | cmdlist_t *c; |
| 1209 | void *p = NULL; |
| 1210 | unsigned long flags; |
| 1211 | int error; |
| 1212 | |
| 1213 | if ((c = cmd_alloc(h, 0)) == NULL) |
| 1214 | return -ENOMEM; |
| 1215 | c->ctlr = ctlr; |
| 1216 | c->hdr.unit = (io->unit & UNITVALID) ? (io->unit & ~UNITVALID) : dsk; |
| 1217 | c->hdr.size = sizeof(rblk_t) >> 2; |
| 1218 | c->size += sizeof(rblk_t); |
| 1219 | |
| 1220 | c->req.hdr.cmd = io->cmd; |
| 1221 | c->req.hdr.blk = io->blk; |
| 1222 | c->req.hdr.blk_cnt = io->blk_cnt; |
| 1223 | c->type = CMD_IOCTL_PEND; |
| 1224 | |
| 1225 | /* Pre submit processing */ |
| 1226 | switch(io->cmd) { |
| 1227 | case PASSTHRU_A: |
| 1228 | p = kmalloc(io->sg[0].size, GFP_KERNEL); |
| 1229 | if (!p) |
| 1230 | { |
| 1231 | error = -ENOMEM; |
| 1232 | cmd_free(h, c, 0); |
| 1233 | return(error); |
| 1234 | } |
| 1235 | if (copy_from_user(p, io->sg[0].addr, io->sg[0].size)) { |
| 1236 | kfree(p); |
| 1237 | cmd_free(h, c, 0); |
| 1238 | return -EFAULT; |
| 1239 | } |
| 1240 | c->req.hdr.blk = pci_map_single(h->pci_dev, &(io->c), |
| 1241 | sizeof(ida_ioctl_t), |
| 1242 | PCI_DMA_BIDIRECTIONAL); |
| 1243 | c->req.sg[0].size = io->sg[0].size; |
| 1244 | c->req.sg[0].addr = pci_map_single(h->pci_dev, p, |
| 1245 | c->req.sg[0].size, PCI_DMA_BIDIRECTIONAL); |
| 1246 | c->req.hdr.sg_cnt = 1; |
| 1247 | break; |
| 1248 | case IDA_READ: |
| 1249 | case READ_FLASH_ROM: |
| 1250 | case SENSE_CONTROLLER_PERFORMANCE: |
| 1251 | p = kmalloc(io->sg[0].size, GFP_KERNEL); |
| 1252 | if (!p) |
| 1253 | { |
| 1254 | error = -ENOMEM; |
| 1255 | cmd_free(h, c, 0); |
| 1256 | return(error); |
| 1257 | } |
| 1258 | |
| 1259 | c->req.sg[0].size = io->sg[0].size; |
| 1260 | c->req.sg[0].addr = pci_map_single(h->pci_dev, p, |
| 1261 | c->req.sg[0].size, PCI_DMA_BIDIRECTIONAL); |
| 1262 | c->req.hdr.sg_cnt = 1; |
| 1263 | break; |
| 1264 | case IDA_WRITE: |
| 1265 | case IDA_WRITE_MEDIA: |
| 1266 | case DIAG_PASS_THRU: |
| 1267 | case COLLECT_BUFFER: |
| 1268 | case WRITE_FLASH_ROM: |
| 1269 | p = kmalloc(io->sg[0].size, GFP_KERNEL); |
| 1270 | if (!p) |
| 1271 | { |
| 1272 | error = -ENOMEM; |
| 1273 | cmd_free(h, c, 0); |
| 1274 | return(error); |
| 1275 | } |
| 1276 | if (copy_from_user(p, io->sg[0].addr, io->sg[0].size)) { |
| 1277 | kfree(p); |
| 1278 | cmd_free(h, c, 0); |
| 1279 | return -EFAULT; |
| 1280 | } |
| 1281 | c->req.sg[0].size = io->sg[0].size; |
| 1282 | c->req.sg[0].addr = pci_map_single(h->pci_dev, p, |
| 1283 | c->req.sg[0].size, PCI_DMA_BIDIRECTIONAL); |
| 1284 | c->req.hdr.sg_cnt = 1; |
| 1285 | break; |
| 1286 | default: |
| 1287 | c->req.sg[0].size = sizeof(io->c); |
| 1288 | c->req.sg[0].addr = pci_map_single(h->pci_dev,&io->c, |
| 1289 | c->req.sg[0].size, PCI_DMA_BIDIRECTIONAL); |
| 1290 | c->req.hdr.sg_cnt = 1; |
| 1291 | } |
| 1292 | |
| 1293 | /* Put the request on the tail of the request queue */ |
| 1294 | spin_lock_irqsave(IDA_LOCK(ctlr), flags); |
| 1295 | addQ(&h->reqQ, c); |
| 1296 | h->Qdepth++; |
| 1297 | start_io(h); |
| 1298 | spin_unlock_irqrestore(IDA_LOCK(ctlr), flags); |
| 1299 | |
| 1300 | /* Wait for completion */ |
| 1301 | while(c->type != CMD_IOCTL_DONE) |
| 1302 | schedule(); |
| 1303 | |
| 1304 | /* Unmap the DMA */ |
| 1305 | pci_unmap_single(h->pci_dev, c->req.sg[0].addr, c->req.sg[0].size, |
| 1306 | PCI_DMA_BIDIRECTIONAL); |
| 1307 | /* Post submit processing */ |
| 1308 | switch(io->cmd) { |
| 1309 | case PASSTHRU_A: |
| 1310 | pci_unmap_single(h->pci_dev, c->req.hdr.blk, |
| 1311 | sizeof(ida_ioctl_t), |
| 1312 | PCI_DMA_BIDIRECTIONAL); |
| 1313 | case IDA_READ: |
| 1314 | case DIAG_PASS_THRU: |
| 1315 | case SENSE_CONTROLLER_PERFORMANCE: |
| 1316 | case READ_FLASH_ROM: |
| 1317 | if (copy_to_user(io->sg[0].addr, p, io->sg[0].size)) { |
| 1318 | kfree(p); |
| 1319 | return -EFAULT; |
| 1320 | } |
| 1321 | /* fall through and free p */ |
| 1322 | case IDA_WRITE: |
| 1323 | case IDA_WRITE_MEDIA: |
| 1324 | case COLLECT_BUFFER: |
| 1325 | case WRITE_FLASH_ROM: |
| 1326 | kfree(p); |
| 1327 | break; |
| 1328 | default:; |
| 1329 | /* Nothing to do */ |
| 1330 | } |
| 1331 | |
| 1332 | io->rcode = c->req.hdr.rcode; |
| 1333 | cmd_free(h, c, 0); |
| 1334 | return(0); |
| 1335 | } |
| 1336 | |
| 1337 | /* |
| 1338 | * Commands are pre-allocated in a large block. Here we use a simple bitmap |
| 1339 | * scheme to suballocte them to the driver. Operations that are not time |
| 1340 | * critical (and can wait for kmalloc and possibly sleep) can pass in NULL |
| 1341 | * as the first argument to get a new command. |
| 1342 | */ |
| 1343 | static cmdlist_t * cmd_alloc(ctlr_info_t *h, int get_from_pool) |
| 1344 | { |
| 1345 | cmdlist_t * c; |
| 1346 | int i; |
| 1347 | dma_addr_t cmd_dhandle; |
| 1348 | |
| 1349 | if (!get_from_pool) { |
| 1350 | c = (cmdlist_t*)pci_alloc_consistent(h->pci_dev, |
| 1351 | sizeof(cmdlist_t), &cmd_dhandle); |
| 1352 | if(c==NULL) |
| 1353 | return NULL; |
| 1354 | } else { |
| 1355 | do { |
| 1356 | i = find_first_zero_bit(h->cmd_pool_bits, NR_CMDS); |
| 1357 | if (i == NR_CMDS) |
| 1358 | return NULL; |
| 1359 | } while(test_and_set_bit(i&(BITS_PER_LONG-1), h->cmd_pool_bits+(i/BITS_PER_LONG)) != 0); |
| 1360 | c = h->cmd_pool + i; |
| 1361 | cmd_dhandle = h->cmd_pool_dhandle + i*sizeof(cmdlist_t); |
| 1362 | h->nr_allocs++; |
| 1363 | } |
| 1364 | |
| 1365 | memset(c, 0, sizeof(cmdlist_t)); |
| 1366 | c->busaddr = cmd_dhandle; |
| 1367 | return c; |
| 1368 | } |
| 1369 | |
| 1370 | static void cmd_free(ctlr_info_t *h, cmdlist_t *c, int got_from_pool) |
| 1371 | { |
| 1372 | int i; |
| 1373 | |
| 1374 | if (!got_from_pool) { |
| 1375 | pci_free_consistent(h->pci_dev, sizeof(cmdlist_t), c, |
| 1376 | c->busaddr); |
| 1377 | } else { |
| 1378 | i = c - h->cmd_pool; |
| 1379 | clear_bit(i&(BITS_PER_LONG-1), h->cmd_pool_bits+(i/BITS_PER_LONG)); |
| 1380 | h->nr_frees++; |
| 1381 | } |
| 1382 | } |
| 1383 | |
| 1384 | /*********************************************************************** |
| 1385 | name: sendcmd |
| 1386 | Send a command to an IDA using the memory mapped FIFO interface |
| 1387 | and wait for it to complete. |
| 1388 | This routine should only be called at init time. |
| 1389 | ***********************************************************************/ |
| 1390 | static int sendcmd( |
| 1391 | __u8 cmd, |
| 1392 | int ctlr, |
| 1393 | void *buff, |
| 1394 | size_t size, |
| 1395 | unsigned int blk, |
| 1396 | unsigned int blkcnt, |
| 1397 | unsigned int log_unit ) |
| 1398 | { |
| 1399 | cmdlist_t *c; |
| 1400 | int complete; |
| 1401 | unsigned long temp; |
| 1402 | unsigned long i; |
| 1403 | ctlr_info_t *info_p = hba[ctlr]; |
| 1404 | |
| 1405 | c = cmd_alloc(info_p, 1); |
| 1406 | if(!c) |
| 1407 | return IO_ERROR; |
| 1408 | c->ctlr = ctlr; |
| 1409 | c->hdr.unit = log_unit; |
| 1410 | c->hdr.prio = 0; |
| 1411 | c->hdr.size = sizeof(rblk_t) >> 2; |
| 1412 | c->size += sizeof(rblk_t); |
| 1413 | |
| 1414 | /* The request information. */ |
| 1415 | c->req.hdr.next = 0; |
| 1416 | c->req.hdr.rcode = 0; |
| 1417 | c->req.bp = 0; |
| 1418 | c->req.hdr.sg_cnt = 1; |
| 1419 | c->req.hdr.reserved = 0; |
| 1420 | |
| 1421 | if (size == 0) |
| 1422 | c->req.sg[0].size = 512; |
| 1423 | else |
| 1424 | c->req.sg[0].size = size; |
| 1425 | |
| 1426 | c->req.hdr.blk = blk; |
| 1427 | c->req.hdr.blk_cnt = blkcnt; |
| 1428 | c->req.hdr.cmd = (unsigned char) cmd; |
| 1429 | c->req.sg[0].addr = (__u32) pci_map_single(info_p->pci_dev, |
| 1430 | buff, c->req.sg[0].size, PCI_DMA_BIDIRECTIONAL); |
| 1431 | /* |
| 1432 | * Disable interrupt |
| 1433 | */ |
| 1434 | info_p->access.set_intr_mask(info_p, 0); |
| 1435 | /* Make sure there is room in the command FIFO */ |
| 1436 | /* Actually it should be completely empty at this time. */ |
| 1437 | for (i = 200000; i > 0; i--) { |
| 1438 | temp = info_p->access.fifo_full(info_p); |
| 1439 | if (temp != 0) { |
| 1440 | break; |
| 1441 | } |
| 1442 | udelay(10); |
| 1443 | DBG( |
| 1444 | printk(KERN_WARNING "cpqarray ida%d: idaSendPciCmd FIFO full," |
| 1445 | " waiting!\n", ctlr); |
| 1446 | ); |
| 1447 | } |
| 1448 | /* |
| 1449 | * Send the cmd |
| 1450 | */ |
| 1451 | info_p->access.submit_command(info_p, c); |
| 1452 | complete = pollcomplete(ctlr); |
| 1453 | |
| 1454 | pci_unmap_single(info_p->pci_dev, (dma_addr_t) c->req.sg[0].addr, |
| 1455 | c->req.sg[0].size, PCI_DMA_BIDIRECTIONAL); |
| 1456 | if (complete != 1) { |
| 1457 | if (complete != c->busaddr) { |
| 1458 | printk( KERN_WARNING |
| 1459 | "cpqarray ida%d: idaSendPciCmd " |
| 1460 | "Invalid command list address returned! (%08lx)\n", |
| 1461 | ctlr, (unsigned long)complete); |
| 1462 | cmd_free(info_p, c, 1); |
| 1463 | return (IO_ERROR); |
| 1464 | } |
| 1465 | } else { |
| 1466 | printk( KERN_WARNING |
| 1467 | "cpqarray ida%d: idaSendPciCmd Timeout out, " |
| 1468 | "No command list address returned!\n", |
| 1469 | ctlr); |
| 1470 | cmd_free(info_p, c, 1); |
| 1471 | return (IO_ERROR); |
| 1472 | } |
| 1473 | |
| 1474 | if (c->req.hdr.rcode & 0x00FE) { |
| 1475 | if (!(c->req.hdr.rcode & BIG_PROBLEM)) { |
| 1476 | printk( KERN_WARNING |
| 1477 | "cpqarray ida%d: idaSendPciCmd, error: " |
| 1478 | "Controller failed at init time " |
| 1479 | "cmd: 0x%x, return code = 0x%x\n", |
| 1480 | ctlr, c->req.hdr.cmd, c->req.hdr.rcode); |
| 1481 | |
| 1482 | cmd_free(info_p, c, 1); |
| 1483 | return (IO_ERROR); |
| 1484 | } |
| 1485 | } |
| 1486 | cmd_free(info_p, c, 1); |
| 1487 | return (IO_OK); |
| 1488 | } |
| 1489 | |
| 1490 | /* |
| 1491 | * revalidate_allvol is for online array config utilities. After a |
| 1492 | * utility reconfigures the drives in the array, it can use this function |
| 1493 | * (through an ioctl) to make the driver zap any previous disk structs for |
| 1494 | * that controller and get new ones. |
| 1495 | * |
| 1496 | * Right now I'm using the getgeometry() function to do this, but this |
| 1497 | * function should probably be finer grained and allow you to revalidate one |
| 1498 | * particualar logical volume (instead of all of them on a particular |
| 1499 | * controller). |
| 1500 | */ |
| 1501 | static int revalidate_allvol(ctlr_info_t *host) |
| 1502 | { |
| 1503 | int ctlr = host->ctlr; |
| 1504 | int i; |
| 1505 | unsigned long flags; |
| 1506 | |
| 1507 | spin_lock_irqsave(IDA_LOCK(ctlr), flags); |
| 1508 | if (host->usage_count > 1) { |
| 1509 | spin_unlock_irqrestore(IDA_LOCK(ctlr), flags); |
| 1510 | printk(KERN_WARNING "cpqarray: Device busy for volume" |
| 1511 | " revalidation (usage=%d)\n", host->usage_count); |
| 1512 | return -EBUSY; |
| 1513 | } |
| 1514 | host->usage_count++; |
| 1515 | spin_unlock_irqrestore(IDA_LOCK(ctlr), flags); |
| 1516 | |
| 1517 | /* |
| 1518 | * Set the partition and block size structures for all volumes |
| 1519 | * on this controller to zero. We will reread all of this data |
| 1520 | */ |
| 1521 | set_capacity(ida_gendisk[ctlr][0], 0); |
| 1522 | for (i = 1; i < NWD; i++) { |
| 1523 | struct gendisk *disk = ida_gendisk[ctlr][i]; |
| 1524 | if (disk->flags & GENHD_FL_UP) |
| 1525 | del_gendisk(disk); |
| 1526 | } |
| 1527 | memset(host->drv, 0, sizeof(drv_info_t)*NWD); |
| 1528 | |
| 1529 | /* |
| 1530 | * Tell the array controller not to give us any interrupts while |
| 1531 | * we check the new geometry. Then turn interrupts back on when |
| 1532 | * we're done. |
| 1533 | */ |
| 1534 | host->access.set_intr_mask(host, 0); |
| 1535 | getgeometry(ctlr); |
| 1536 | host->access.set_intr_mask(host, FIFO_NOT_EMPTY); |
| 1537 | |
| 1538 | for(i=0; i<NWD; i++) { |
| 1539 | struct gendisk *disk = ida_gendisk[ctlr][i]; |
| 1540 | drv_info_t *drv = &host->drv[i]; |
| 1541 | if (i && !drv->nr_blks) |
| 1542 | continue; |
| 1543 | blk_queue_hardsect_size(host->queue, drv->blk_size); |
| 1544 | set_capacity(disk, drv->nr_blks); |
| 1545 | disk->queue = host->queue; |
| 1546 | disk->private_data = drv; |
| 1547 | if (i) |
| 1548 | add_disk(disk); |
| 1549 | } |
| 1550 | |
| 1551 | host->usage_count--; |
| 1552 | return 0; |
| 1553 | } |
| 1554 | |
| 1555 | static int ida_revalidate(struct gendisk *disk) |
| 1556 | { |
| 1557 | drv_info_t *drv = disk->private_data; |
| 1558 | set_capacity(disk, drv->nr_blks); |
| 1559 | return 0; |
| 1560 | } |
| 1561 | |
| 1562 | /******************************************************************** |
| 1563 | name: pollcomplete |
| 1564 | Wait polling for a command to complete. |
| 1565 | The memory mapped FIFO is polled for the completion. |
| 1566 | Used only at init time, interrupts disabled. |
| 1567 | ********************************************************************/ |
| 1568 | static int pollcomplete(int ctlr) |
| 1569 | { |
| 1570 | int done; |
| 1571 | int i; |
| 1572 | |
| 1573 | /* Wait (up to 2 seconds) for a command to complete */ |
| 1574 | |
| 1575 | for (i = 200000; i > 0; i--) { |
| 1576 | done = hba[ctlr]->access.command_completed(hba[ctlr]); |
| 1577 | if (done == 0) { |
| 1578 | udelay(10); /* a short fixed delay */ |
| 1579 | } else |
| 1580 | return (done); |
| 1581 | } |
| 1582 | /* Invalid address to tell caller we ran out of time */ |
| 1583 | return 1; |
| 1584 | } |
| 1585 | /***************************************************************** |
| 1586 | start_fwbk |
| 1587 | Starts controller firmwares background processing. |
| 1588 | Currently only the Integrated Raid controller needs this done. |
| 1589 | If the PCI mem address registers are written to after this, |
| 1590 | data corruption may occur |
| 1591 | *****************************************************************/ |
| 1592 | static void start_fwbk(int ctlr) |
| 1593 | { |
| 1594 | id_ctlr_t *id_ctlr_buf; |
| 1595 | int ret_code; |
| 1596 | |
| 1597 | if( (hba[ctlr]->board_id != 0x40400E11) |
| 1598 | && (hba[ctlr]->board_id != 0x40480E11) ) |
| 1599 | |
| 1600 | /* Not a Integrated Raid, so there is nothing for us to do */ |
| 1601 | return; |
| 1602 | printk(KERN_DEBUG "cpqarray: Starting firmware's background" |
| 1603 | " processing\n"); |
| 1604 | /* Command does not return anything, but idasend command needs a |
| 1605 | buffer */ |
Robert P. J. Day | 5cbded5 | 2006-12-13 00:35:56 -0800 | [diff] [blame] | 1606 | id_ctlr_buf = kmalloc(sizeof(id_ctlr_t), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1607 | if(id_ctlr_buf==NULL) |
| 1608 | { |
| 1609 | printk(KERN_WARNING "cpqarray: Out of memory. " |
| 1610 | "Unable to start background processing.\n"); |
| 1611 | return; |
| 1612 | } |
| 1613 | ret_code = sendcmd(RESUME_BACKGROUND_ACTIVITY, ctlr, |
| 1614 | id_ctlr_buf, 0, 0, 0, 0); |
| 1615 | if(ret_code != IO_OK) |
| 1616 | printk(KERN_WARNING "cpqarray: Unable to start" |
| 1617 | " background processing\n"); |
| 1618 | |
| 1619 | kfree(id_ctlr_buf); |
| 1620 | } |
| 1621 | /***************************************************************** |
| 1622 | getgeometry |
| 1623 | Get ida logical volume geometry from the controller |
| 1624 | This is a large bit of code which once existed in two flavors, |
| 1625 | It is used only at init time. |
| 1626 | *****************************************************************/ |
| 1627 | static void getgeometry(int ctlr) |
| 1628 | { |
| 1629 | id_log_drv_t *id_ldrive; |
| 1630 | id_ctlr_t *id_ctlr_buf; |
| 1631 | sense_log_drv_stat_t *id_lstatus_buf; |
| 1632 | config_t *sense_config_buf; |
| 1633 | unsigned int log_unit, log_index; |
| 1634 | int ret_code, size; |
| 1635 | drv_info_t *drv; |
| 1636 | ctlr_info_t *info_p = hba[ctlr]; |
| 1637 | int i; |
| 1638 | |
| 1639 | info_p->log_drv_map = 0; |
| 1640 | |
Mariusz Kozlowski | 2e4934a | 2007-08-11 22:34:30 +0200 | [diff] [blame] | 1641 | id_ldrive = kzalloc(sizeof(id_log_drv_t), GFP_KERNEL); |
| 1642 | if (!id_ldrive) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1643 | printk( KERN_ERR "cpqarray: out of memory.\n"); |
Mariusz Kozlowski | 2e4934a | 2007-08-11 22:34:30 +0200 | [diff] [blame] | 1644 | goto err_0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1645 | } |
| 1646 | |
Mariusz Kozlowski | 2e4934a | 2007-08-11 22:34:30 +0200 | [diff] [blame] | 1647 | id_ctlr_buf = kzalloc(sizeof(id_ctlr_t), GFP_KERNEL); |
| 1648 | if (!id_ctlr_buf) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1649 | printk( KERN_ERR "cpqarray: out of memory.\n"); |
Mariusz Kozlowski | 2e4934a | 2007-08-11 22:34:30 +0200 | [diff] [blame] | 1650 | goto err_1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1651 | } |
| 1652 | |
Mariusz Kozlowski | 2e4934a | 2007-08-11 22:34:30 +0200 | [diff] [blame] | 1653 | id_lstatus_buf = kzalloc(sizeof(sense_log_drv_stat_t), GFP_KERNEL); |
| 1654 | if (!id_lstatus_buf) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1655 | printk( KERN_ERR "cpqarray: out of memory.\n"); |
Mariusz Kozlowski | 2e4934a | 2007-08-11 22:34:30 +0200 | [diff] [blame] | 1656 | goto err_2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1657 | } |
| 1658 | |
Mariusz Kozlowski | 2e4934a | 2007-08-11 22:34:30 +0200 | [diff] [blame] | 1659 | sense_config_buf = kzalloc(sizeof(config_t), GFP_KERNEL); |
| 1660 | if (!sense_config_buf) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1661 | printk( KERN_ERR "cpqarray: out of memory.\n"); |
Mariusz Kozlowski | 2e4934a | 2007-08-11 22:34:30 +0200 | [diff] [blame] | 1662 | goto err_3; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1663 | } |
| 1664 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1665 | info_p->phys_drives = 0; |
| 1666 | info_p->log_drv_map = 0; |
| 1667 | info_p->drv_assign_map = 0; |
| 1668 | info_p->drv_spare_map = 0; |
| 1669 | info_p->mp_failed_drv_map = 0; /* only initialized here */ |
| 1670 | /* Get controllers info for this logical drive */ |
| 1671 | ret_code = sendcmd(ID_CTLR, ctlr, id_ctlr_buf, 0, 0, 0, 0); |
| 1672 | if (ret_code == IO_ERROR) { |
| 1673 | /* |
| 1674 | * If can't get controller info, set the logical drive map to 0, |
| 1675 | * so the idastubopen will fail on all logical drives |
| 1676 | * on the controller. |
| 1677 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1678 | printk(KERN_ERR "cpqarray: error sending ID controller\n"); |
Mariusz Kozlowski | 2e4934a | 2007-08-11 22:34:30 +0200 | [diff] [blame] | 1679 | goto err_4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1680 | } |
| 1681 | |
| 1682 | info_p->log_drives = id_ctlr_buf->nr_drvs; |
| 1683 | for(i=0;i<4;i++) |
| 1684 | info_p->firm_rev[i] = id_ctlr_buf->firm_rev[i]; |
| 1685 | info_p->ctlr_sig = id_ctlr_buf->cfg_sig; |
| 1686 | |
| 1687 | printk(" (%s)\n", info_p->product_name); |
| 1688 | /* |
| 1689 | * Initialize logical drive map to zero |
| 1690 | */ |
| 1691 | log_index = 0; |
| 1692 | /* |
| 1693 | * Get drive geometry for all logical drives |
| 1694 | */ |
| 1695 | if (id_ctlr_buf->nr_drvs > 16) |
| 1696 | printk(KERN_WARNING "cpqarray ida%d: This driver supports " |
| 1697 | "16 logical drives per controller.\n. " |
| 1698 | " Additional drives will not be " |
| 1699 | "detected\n", ctlr); |
| 1700 | |
| 1701 | for (log_unit = 0; |
| 1702 | (log_index < id_ctlr_buf->nr_drvs) |
| 1703 | && (log_unit < NWD); |
| 1704 | log_unit++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1705 | size = sizeof(sense_log_drv_stat_t); |
| 1706 | |
| 1707 | /* |
| 1708 | Send "Identify logical drive status" cmd |
| 1709 | */ |
| 1710 | ret_code = sendcmd(SENSE_LOG_DRV_STAT, |
| 1711 | ctlr, id_lstatus_buf, size, 0, 0, log_unit); |
| 1712 | if (ret_code == IO_ERROR) { |
| 1713 | /* |
| 1714 | If can't get logical drive status, set |
| 1715 | the logical drive map to 0, so the |
| 1716 | idastubopen will fail for all logical drives |
| 1717 | on the controller. |
| 1718 | */ |
| 1719 | info_p->log_drv_map = 0; |
| 1720 | printk( KERN_WARNING |
| 1721 | "cpqarray ida%d: idaGetGeometry - Controller" |
| 1722 | " failed to report status of logical drive %d\n" |
| 1723 | "Access to this controller has been disabled\n", |
| 1724 | ctlr, log_unit); |
Mariusz Kozlowski | 2e4934a | 2007-08-11 22:34:30 +0200 | [diff] [blame] | 1725 | goto err_4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1726 | } |
| 1727 | /* |
| 1728 | Make sure the logical drive is configured |
| 1729 | */ |
| 1730 | if (id_lstatus_buf->status != LOG_NOT_CONF) { |
| 1731 | ret_code = sendcmd(ID_LOG_DRV, ctlr, id_ldrive, |
| 1732 | sizeof(id_log_drv_t), 0, 0, log_unit); |
| 1733 | /* |
| 1734 | If error, the bit for this |
| 1735 | logical drive won't be set and |
| 1736 | idastubopen will return error. |
| 1737 | */ |
| 1738 | if (ret_code != IO_ERROR) { |
| 1739 | drv = &info_p->drv[log_unit]; |
| 1740 | drv->blk_size = id_ldrive->blk_size; |
| 1741 | drv->nr_blks = id_ldrive->nr_blks; |
| 1742 | drv->cylinders = id_ldrive->drv.cyl; |
| 1743 | drv->heads = id_ldrive->drv.heads; |
| 1744 | drv->sectors = id_ldrive->drv.sect_per_track; |
| 1745 | info_p->log_drv_map |= (1 << log_unit); |
| 1746 | |
| 1747 | printk(KERN_INFO "cpqarray ida/c%dd%d: blksz=%d nr_blks=%d\n", |
| 1748 | ctlr, log_unit, drv->blk_size, drv->nr_blks); |
| 1749 | ret_code = sendcmd(SENSE_CONFIG, |
| 1750 | ctlr, sense_config_buf, |
| 1751 | sizeof(config_t), 0, 0, log_unit); |
| 1752 | if (ret_code == IO_ERROR) { |
| 1753 | info_p->log_drv_map = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1754 | printk(KERN_ERR "cpqarray: error sending sense config\n"); |
Mariusz Kozlowski | 2e4934a | 2007-08-11 22:34:30 +0200 | [diff] [blame] | 1755 | goto err_4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1756 | } |
| 1757 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1758 | info_p->phys_drives = |
| 1759 | sense_config_buf->ctlr_phys_drv; |
| 1760 | info_p->drv_assign_map |
| 1761 | |= sense_config_buf->drv_asgn_map; |
| 1762 | info_p->drv_assign_map |
| 1763 | |= sense_config_buf->spare_asgn_map; |
| 1764 | info_p->drv_spare_map |
| 1765 | |= sense_config_buf->spare_asgn_map; |
| 1766 | } /* end of if no error on id_ldrive */ |
| 1767 | log_index = log_index + 1; |
| 1768 | } /* end of if logical drive configured */ |
| 1769 | } /* end of for log_unit */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1770 | |
Mariusz Kozlowski | 2e4934a | 2007-08-11 22:34:30 +0200 | [diff] [blame] | 1771 | /* Free all the buffers and return */ |
| 1772 | err_4: |
| 1773 | kfree(sense_config_buf); |
| 1774 | err_3: |
| 1775 | kfree(id_lstatus_buf); |
| 1776 | err_2: |
| 1777 | kfree(id_ctlr_buf); |
| 1778 | err_1: |
| 1779 | kfree(id_ldrive); |
| 1780 | err_0: |
| 1781 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1782 | } |
| 1783 | |
| 1784 | static void __exit cpqarray_exit(void) |
| 1785 | { |
| 1786 | int i; |
| 1787 | |
| 1788 | pci_unregister_driver(&cpqarray_pci_driver); |
| 1789 | |
| 1790 | /* Double check that all controller entries have been removed */ |
| 1791 | for(i=0; i<MAX_CTLR; i++) { |
| 1792 | if (hba[i] != NULL) { |
| 1793 | printk(KERN_WARNING "cpqarray: Removing EISA " |
| 1794 | "controller %d\n", i); |
| 1795 | cpqarray_remove_one_eisa(i); |
| 1796 | } |
| 1797 | } |
| 1798 | |
Alexey Dobriyan | 928b4d8 | 2008-04-29 01:01:44 -0700 | [diff] [blame] | 1799 | remove_proc_entry("driver/cpqarray", NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1800 | } |
| 1801 | |
| 1802 | module_init(cpqarray_init) |
| 1803 | module_exit(cpqarray_exit) |