drivers/block/cpqarray.c

   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  */
  22 #include <linux/config.h>       /* CONFIG_PROC_FS */
  23 #include <linux/module.h>
  24 #include <linux/types.h>
  25 #include <linux/pci.h>
  26 #include <linux/bio.h>
  27 #include <linux/interrupt.h>
  28 #include <linux/kernel.h>
  29 #include <linux/slab.h>
  30 #include <linux/delay.h>
  31 #include <linux/major.h>
  32 #include <linux/fs.h>
  33 #include <linux/blkpg.h>
  34 #include <linux/timer.h>
  35 #include <linux/proc_fs.h>
  36 #include <linux/devfs_fs_kernel.h>
  37 #include <linux/init.h>
  38 #include <linux/hdreg.h>
  39 #include <linux/spinlock.h>
  40 #include <linux/blkdev.h>
  41 #include <linux/genhd.h>
  42 #include <asm/uaccess.h>
  43 #include <asm/io.h>
  44
  45
  46 #define SMART2_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin))
  47
  48 #define DRIVER_NAME "Compaq SMART2 Driver (v 2.6.0)"
  49 #define DRIVER_VERSION SMART2_DRIVER_VERSION(2,6,0)
  50
  51 /* Embedded module documentation macros - see modules.h */
  52 /* Original author Chris Frantz - Compaq Computer Corporation */
  53 MODULE_AUTHOR("Compaq Computer Corporation");
  54 MODULE_DESCRIPTION("Driver for Compaq Smart2 Array Controllers version 2.6.0");
  55 MODULE_LICENSE("GPL");
  56
  57 #include "cpqarray.h"
  58 #include "ida_cmd.h"
  59 #include "smart1,2.h"
  60 #include "ida_ioctl.h"
  61
  62 #define READ_AHEAD      128
  63 #define NR_CMDS         128 /* This could probably go as high as ~400 */
  64
  65 #define MAX_CTLR        8
  66 #define CTLR_SHIFT      8
  67
  68 #define CPQARRAY_DMA_MASK       0xFFFFFFFF      /* 32 bit DMA */
  69
  70 static int nr_ctlr;
  71 static ctlr_info_t *hba[MAX_CTLR];
  72
  73 static int eisa[8];
  74
  75 #define NR_PRODUCTS ARRAY_SIZE(products)
  76
  77 /*  board_id = Subsystem Device ID & Vendor ID
  78  *  product = Marketing Name for the board
  79  *  access = Address of the struct of function pointers
  80  */
  81 static struct board_type products[] = {
  82         { 0x0040110E, "IDA",                    &smart1_access },
  83         { 0x0140110E, "IDA-2",                  &smart1_access },
  84         { 0x1040110E, "IAES",                   &smart1_access },
  85         { 0x2040110E, "SMART",                  &smart1_access },
  86         { 0x3040110E, "SMART-2/E",              &smart2e_access },
  87         { 0x40300E11, "SMART-2/P",              &smart2_access },
  88         { 0x40310E11, "SMART-2SL",              &smart2_access },
  89         { 0x40320E11, "Smart Array 3200",       &smart2_access },
  90         { 0x40330E11, "Smart Array 3100ES",     &smart2_access },
  91         { 0x40340E11, "Smart Array 221",        &smart2_access },
  92         { 0x40400E11, "Integrated Array",       &smart4_access },
  93         { 0x40480E11, "Compaq Raid LC2",        &smart4_access },
  94         { 0x40500E11, "Smart Array 4200",       &smart4_access },
  95         { 0x40510E11, "Smart Array 4250ES",     &smart4_access },
  96         { 0x40580E11, "Smart Array 431",        &smart4_access },
  97 };
  98
  99 /* define the PCI info for the PCI cards this driver can control */
 100 static const struct pci_device_id cpqarray_pci_device_id[] =
 101 {
 102         { PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_COMPAQ_42XX,
 103                 0x0E11, 0x4058, 0, 0, 0},       /* SA431 */
 104         { PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_COMPAQ_42XX,
 105                 0x0E11, 0x4051, 0, 0, 0},      /* SA4250ES */
 106         { PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_COMPAQ_42XX,
 107                 0x0E11, 0x4050, 0, 0, 0},      /* SA4200 */
 108         { PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C1510,
 109                 0x0E11, 0x4048, 0, 0, 0},       /* LC2 */
 110         { PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C1510,
 111                 0x0E11, 0x4040, 0, 0, 0},      /* Integrated Array */
 112         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_SMART2P,
 113                 0x0E11, 0x4034, 0, 0, 0},       /* SA 221 */
 114         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_SMART2P,
 115                 0x0E11, 0x4033, 0, 0, 0},       /* SA 3100ES*/
 116         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_SMART2P,
 117                 0x0E11, 0x4032, 0, 0, 0},       /* SA 3200*/
 118         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_SMART2P,
 119                 0x0E11, 0x4031, 0, 0, 0},       /* SA 2SL*/
 120         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_SMART2P,
 121                 0x0E11, 0x4030, 0, 0, 0},       /* SA 2P */
 122         { 0 }
 123 };
 124
 125 MODULE_DEVICE_TABLE(pci, cpqarray_pci_device_id);
 126
 127 static struct gendisk *ida_gendisk[MAX_CTLR][NWD];
 128
 129 /* Debug... */
 130 #define DBG(s)  do { s } while(0)
 131 /* Debug (general info)... */
 132 #define DBGINFO(s) do { } while(0)
 133 /* Debug Paranoid... */
 134 #define DBGP(s)  do { } while(0)
 135 /* Debug Extra Paranoid... */
 136 #define DBGPX(s) do { } while(0)
 137
 138 static int cpqarray_pci_init(ctlr_info_t *c, struct pci_dev *pdev);
 139 static void __iomem *remap_pci_mem(ulong base, ulong size);
 140 static int cpqarray_eisa_detect(void);
 141 static int pollcomplete(int ctlr);
 142 static void getgeometry(int ctlr);
 143 static void start_fwbk(int ctlr);
 144
 145 static cmdlist_t * cmd_alloc(ctlr_info_t *h, int get_from_pool);
 146 static void cmd_free(ctlr_info_t *h, cmdlist_t *c, int got_from_pool);
 147
 148 static void free_hba(int i);
 149 static int alloc_cpqarray_hba(void);
 150
 151 static int sendcmd(
 152         __u8    cmd,
 153         int     ctlr,
 154         void    *buff,
 155         size_t  size,
 156         unsigned int blk,
 157         unsigned int blkcnt,
 158         unsigned int log_unit );
 159
 160 static int ida_open(struct inode *inode, struct file *filep);
 161 static int ida_release(struct inode *inode, struct file *filep);
 162 static int ida_ioctl(struct inode *inode, struct file *filep, unsigned int cmd, unsigned long arg);
 163 static int ida_getgeo(struct block_device *bdev, struct hd_geometry *geo);
 164 static int ida_ctlr_ioctl(ctlr_info_t *h, int dsk, ida_ioctl_t *io);
 165
 166 static void do_ida_request(request_queue_t *q);
 167 static void start_io(ctlr_info_t *h);
 168
 169 static inline void addQ(cmdlist_t **Qptr, cmdlist_t *c);
 170 static inline cmdlist_t *removeQ(cmdlist_t **Qptr, cmdlist_t *c);
 171 static inline void complete_buffers(struct bio *bio, int ok);
 172 static inline void complete_command(cmdlist_t *cmd, int timeout);
 173
 174 static irqreturn_t do_ida_intr(int irq, void *dev_id, struct pt_regs * regs);
 175 static void ida_timer(unsigned long tdata);
 176 static int ida_revalidate(struct gendisk *disk);
 177 static int revalidate_allvol(ctlr_info_t *host);
 178 static int cpqarray_register_ctlr(int ctlr, struct pci_dev *pdev);
 179
 180 #ifdef CONFIG_PROC_FS
 181 static void ida_procinit(int i);
 182 static int ida_proc_get_info(char *buffer, char **start, off_t offset, int length, int *eof, void *data);
 183 #else
 184 static void ida_procinit(int i) {}
 185 #endif
 186
 187 static inline drv_info_t *get_drv(struct gendisk *disk)
 188 {
 189         return disk->private_data;
 190 }
 191
 192 static inline ctlr_info_t *get_host(struct gendisk *disk)
 193 {
 194         return disk->queue->queuedata;
 195 }
 196
 197
 198 static struct block_device_operations ida_fops  = {
 199         .owner          = THIS_MODULE,
 200         .open           = ida_open,
 201         .release        = ida_release,
 202         .ioctl          = ida_ioctl,
 203         .getgeo         = ida_getgeo,
 204         .revalidate_disk= ida_revalidate,
 205 };
 206
 207
 208 #ifdef CONFIG_PROC_FS
 209
 210 static struct proc_dir_entry *proc_array;
 211
 212 /*
 213  * Get us a file in /proc/array that says something about each controller.
 214  * Create /proc/array if it doesn't exist yet.
 215  */
 216 static void __init ida_procinit(int i)
 217 {
 218         if (proc_array == NULL) {
 219                 proc_array = proc_mkdir("cpqarray", proc_root_driver);
 220                 if (!proc_array) return;
 221         }
 222
 223         create_proc_read_entry(hba[i]->devname, 0, proc_array,
 224                                ida_proc_get_info, hba[i]);
 225 }
 226
 227 /*
 228  * Report information about this controller.
 229  */
 230 static int ida_proc_get_info(char *buffer, char **start, off_t offset, int length, int *eof, void *data)
 231 {
 232         off_t pos = 0;
 233         off_t len = 0;
 234         int size, i, ctlr;
 235         ctlr_info_t *h = (ctlr_info_t*)data;
 236         drv_info_t *drv;
 237 #ifdef CPQ_PROC_PRINT_QUEUES
 238         cmdlist_t *c;
 239         unsigned long flags;
 240 #endif
 241
 242         ctlr = h->ctlr;
 243         size = sprintf(buffer, "%s:  Compaq %s Controller\n"
 244                 "       Board ID: 0x%08lx\n"
 245                 "       Firmware Revision: %c%c%c%c\n"
 246                 "       Controller Sig: 0x%08lx\n"
 247                 "       Memory Address: 0x%08lx\n"
 248                 "       I/O Port: 0x%04x\n"
 249                 "       IRQ: %d\n"
 250                 "       Logical drives: %d\n"
 251                 "       Physical drives: %d\n\n"
 252                 "       Current Q depth: %d\n"
 253                 "       Max Q depth since init: %d\n\n",
 254                 h->devname,
 255                 h->product_name,
 256                 (unsigned long)h->board_id,
 257                 h->firm_rev[0], h->firm_rev[1], h->firm_rev[2], h->firm_rev[3],
 258                 (unsigned long)h->ctlr_sig, (unsigned long)h->vaddr,
 259                 (unsigned int) h->io_mem_addr, (unsigned int)h->intr,
 260                 h->log_drives, h->phys_drives,
 261                 h->Qdepth, h->maxQsinceinit);
 262
 263         pos += size; len += size;
 264
 265         size = sprintf(buffer+len, "Logical Drive Info:\n");
 266         pos += size; len += size;
 267
 268         for(i=0; i<h->log_drives; i++) {
 269                 drv = &h->drv[i];
 270                 size = sprintf(buffer+len, "ida/c%dd%d: blksz=%d nr_blks=%d\n",
 271                                 ctlr, i, drv->blk_size, drv->nr_blks);
 272                 pos += size; len += size;
 273         }
 274
 275 #ifdef CPQ_PROC_PRINT_QUEUES
 276         spin_lock_irqsave(IDA_LOCK(h->ctlr), flags);
 277         size = sprintf(buffer+len, "\nCurrent Queues:\n");
 278         pos += size; len += size;
 279
 280         c = h->reqQ;
 281         size = sprintf(buffer+len, "reqQ = %p", c); pos += size; len += size;
 282         if (c) c=c->next;
 283         while(c && c != h->reqQ) {
 284                 size = sprintf(buffer+len, "->%p", c);
 285                 pos += size; len += size;
 286                 c=c->next;
 287         }
 288
 289         c = h->cmpQ;
 290         size = sprintf(buffer+len, "\ncmpQ = %p", c); pos += size; len += size;
 291         if (c) c=c->next;
 292         while(c && c != h->cmpQ) {
 293                 size = sprintf(buffer+len, "->%p", c);
 294                 pos += size; len += size;
 295                 c=c->next;
 296         }
 297
 298         size = sprintf(buffer+len, "\n"); pos += size; len += size;
 299         spin_unlock_irqrestore(IDA_LOCK(h->ctlr), flags);
 300 #endif
 301         size = sprintf(buffer+len, "nr_allocs = %d\nnr_frees = %d\n",
 302                         h->nr_allocs, h->nr_frees);
 303         pos += size; len += size;
 304
 305         *eof = 1;
 306         *start = buffer+offset;
 307         len -= offset;
 308         if (len>length)
 309                 len = length;
 310         return len;
 311 }
 312 #endif /* CONFIG_PROC_FS */
 313
 314 module_param_array(eisa, int, NULL, 0);
 315
 316 static void release_io_mem(ctlr_info_t *c)
 317 {
 318         /* if IO mem was not protected do nothing */
 319         if( c->io_mem_addr == 0)
 320                 return;
 321         release_region(c->io_mem_addr, c->io_mem_length);
 322         c->io_mem_addr = 0;
 323         c->io_mem_length = 0;
 324 }
 325
 326 static void __devexit cpqarray_remove_one(int i)
 327 {
 328         int j;
 329         char buff[4];
 330
 331         /* sendcmd will turn off interrupt, and send the flush...
 332          * To write all data in the battery backed cache to disks
 333          * no data returned, but don't want to send NULL to sendcmd */
 334         if( sendcmd(FLUSH_CACHE, i, buff, 4, 0, 0, 0))
 335         {
 336                 printk(KERN_WARNING "Unable to flush cache on controller %d\n",
 337                                 i);
 338         }
 339         free_irq(hba[i]->intr, hba[i]);
 340         iounmap(hba[i]->vaddr);
 341         unregister_blkdev(COMPAQ_SMART2_MAJOR+i, hba[i]->devname);
 342         del_timer(&hba[i]->timer);
 343         remove_proc_entry(hba[i]->devname, proc_array);
 344         pci_free_consistent(hba[i]->pci_dev,
 345                         NR_CMDS * sizeof(cmdlist_t), (hba[i]->cmd_pool),
 346                         hba[i]->cmd_pool_dhandle);
 347         kfree(hba[i]->cmd_pool_bits);
 348         for(j = 0; j < NWD; j++) {
 349                 if (ida_gendisk[i][j]->flags & GENHD_FL_UP)
 350                         del_gendisk(ida_gendisk[i][j]);
 351                 devfs_remove("ida/c%dd%d",i,j);
 352                 put_disk(ida_gendisk[i][j]);
 353         }
 354         blk_cleanup_queue(hba[i]->queue);
 355         release_io_mem(hba[i]);
 356         free_hba(i);
 357 }
 358
 359 static void __devexit cpqarray_remove_one_pci (struct pci_dev *pdev)
 360 {
 361         int i;
 362         ctlr_info_t *tmp_ptr;
 363
 364         if (pci_get_drvdata(pdev) == NULL) {
 365                 printk( KERN_ERR "cpqarray: Unable to remove device \n");
 366                 return;
 367         }
 368
 369         tmp_ptr = pci_get_drvdata(pdev);
 370         i = tmp_ptr->ctlr;
 371         if (hba[i] == NULL) {
 372                 printk(KERN_ERR "cpqarray: controller %d appears to have"
 373                         "already been removed \n", i);
 374                 return;
 375         }
 376         pci_set_drvdata(pdev, NULL);
 377
 378         cpqarray_remove_one(i);
 379 }
 380
 381 /* removing an instance that was not removed automatically..
 382  * must be an eisa card.
 383  */
 384 static void __devexit cpqarray_remove_one_eisa (int i)
 385 {
 386         if (hba[i] == NULL) {
 387                 printk(KERN_ERR "cpqarray: controller %d appears to have"
 388                         "already been removed \n", i);
 389                 return;
 390         }
 391         cpqarray_remove_one(i);
 392 }
 393
 394 /* pdev is NULL for eisa */
 395 static int cpqarray_register_ctlr( int i, struct pci_dev *pdev)
 396 {
 397         request_queue_t *q;
 398         int j;
 399
 400         /*
 401          * register block devices
 402          * Find disks and fill in structs
 403          * Get an interrupt, set the Q depth and get into /proc
 404          */
 405
 406         /* If this successful it should insure that we are the only */
 407         /* instance of the driver */
 408         if (register_blkdev(COMPAQ_SMART2_MAJOR+i, hba[i]->devname)) {
 409                 goto Enomem4;
 410         }
 411         hba[i]->access.set_intr_mask(hba[i], 0);
 412         if (request_irq(hba[i]->intr, do_ida_intr,
 413                 SA_INTERRUPT|SA_SHIRQ|SA_SAMPLE_RANDOM,
 414                 hba[i]->devname, hba[i]))
 415         {
 416                 printk(KERN_ERR "cpqarray: Unable to get irq %d for %s\n",
 417                                 hba[i]->intr, hba[i]->devname);
 418                 goto Enomem3;
 419         }
 420
 421         for (j=0; j<NWD; j++) {
 422                 ida_gendisk[i][j] = alloc_disk(1 << NWD_SHIFT);
 423                 if (!ida_gendisk[i][j])
 424                         goto Enomem2;
 425         }
 426
 427         hba[i]->cmd_pool = (cmdlist_t *)pci_alloc_consistent(
 428                 hba[i]->pci_dev, NR_CMDS * sizeof(cmdlist_t),
 429                 &(hba[i]->cmd_pool_dhandle));
 430         hba[i]->cmd_pool_bits = kmalloc(
 431                 ((NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG)*sizeof(unsigned long),
 432                 GFP_KERNEL);
 433
 434         if (!hba[i]->cmd_pool_bits || !hba[i]->cmd_pool)
 435                         goto Enomem1;
 436
 437         memset(hba[i]->cmd_pool, 0, NR_CMDS * sizeof(cmdlist_t));
 438         memset(hba[i]->cmd_pool_bits, 0, ((NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG)*sizeof(unsigned long));
 439         printk(KERN_INFO "cpqarray: Finding drives on %s",
 440                 hba[i]->devname);
 441
 442         spin_lock_init(&hba[i]->lock);
 443         q = blk_init_queue(do_ida_request, &hba[i]->lock);
 444         if (!q)
 445                 goto Enomem1;
 446
 447         hba[i]->queue = q;
 448         q->queuedata = hba[i];
 449
 450         getgeometry(i);
 451         start_fwbk(i);
 452
 453         ida_procinit(i);
 454
 455         if (pdev)
 456                 blk_queue_bounce_limit(q, hba[i]->pci_dev->dma_mask);
 457
 458         /* This is a hardware imposed limit. */
 459         blk_queue_max_hw_segments(q, SG_MAX);
 460
 461         /* This is a driver limit and could be eliminated. */
 462         blk_queue_max_phys_segments(q, SG_MAX);
 463
 464         init_timer(&hba[i]->timer);
 465         hba[i]->timer.expires = jiffies + IDA_TIMER;
 466         hba[i]->timer.data = (unsigned long)hba[i];
 467         hba[i]->timer.function = ida_timer;
 468         add_timer(&hba[i]->timer);
 469
 470         /* Enable IRQ now that spinlock and rate limit timer are set up */
 471         hba[i]->access.set_intr_mask(hba[i], FIFO_NOT_EMPTY);
 472
 473         for(j=0; j<NWD; j++) {
 474                 struct gendisk *disk = ida_gendisk[i][j];
 475                 drv_info_t *drv = &hba[i]->drv[j];
 476                 sprintf(disk->disk_name, "ida/c%dd%d", i, j);
 477                 disk->major = COMPAQ_SMART2_MAJOR + i;
 478                 disk->first_minor = j<<NWD_SHIFT;
 479                 disk->fops = &ida_fops;
 480                 if (j && !drv->nr_blks)
 481                         continue;
 482                 blk_queue_hardsect_size(hba[i]->queue, drv->blk_size);
 483                 set_capacity(disk, drv->nr_blks);
 484                 disk->queue = hba[i]->queue;
 485                 disk->private_data = drv;
 486                 add_disk(disk);
 487         }
 488
 489         /* done ! */
 490         return(i);
 491
 492 Enomem1:
 493         nr_ctlr = i;
 494         kfree(hba[i]->cmd_pool_bits);
 495         if (hba[i]->cmd_pool)
 496                 pci_free_consistent(hba[i]->pci_dev, NR_CMDS*sizeof(cmdlist_t),
 497                                     hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
 498 Enomem2:
 499         while (j--) {
 500                 put_disk(ida_gendisk[i][j]);
 501                 ida_gendisk[i][j] = NULL;
 502         }
 503         free_irq(hba[i]->intr, hba[i]);
 504 Enomem3:
 505         unregister_blkdev(COMPAQ_SMART2_MAJOR+i, hba[i]->devname);
 506 Enomem4:
 507         if (pdev)
 508                 pci_set_drvdata(pdev, NULL);
 509         release_io_mem(hba[i]);
 510         free_hba(i);
 511
 512         printk( KERN_ERR "cpqarray: out of memory");
 513
 514         return -1;
 515 }
 516
 517 static int __init cpqarray_init_one( struct pci_dev *pdev,
 518         const struct pci_device_id *ent)
 519 {
 520         int i;
 521
 522         printk(KERN_DEBUG "cpqarray: Device 0x%x has been found at"
 523                         " bus %d dev %d func %d\n",
 524                         pdev->device, pdev->bus->number, PCI_SLOT(pdev->devfn),
 525                         PCI_FUNC(pdev->devfn));
 526         i = alloc_cpqarray_hba();
 527         if( i < 0 )
 528                 return (-1);
 529         memset(hba[i], 0, sizeof(ctlr_info_t));
 530         sprintf(hba[i]->devname, "ida%d", i);
 531         hba[i]->ctlr = i;
 532         /* Initialize the pdev driver private data */
 533         pci_set_drvdata(pdev, hba[i]);
 534
 535         if (cpqarray_pci_init(hba[i], pdev) != 0) {
 536                 pci_set_drvdata(pdev, NULL);
 537                 release_io_mem(hba[i]);
 538                 free_hba(i);
 539                 return -1;
 540         }
 541
 542         return (cpqarray_register_ctlr(i, pdev));
 543 }
 544
 545 static struct pci_driver cpqarray_pci_driver = {
 546         .name = "cpqarray",
 547         .probe = cpqarray_init_one,
 548         .remove = __devexit_p(cpqarray_remove_one_pci),
 549         .id_table = cpqarray_pci_device_id,
 550 };
 551
 552 /*
 553  *  This is it.  Find all the controllers and register them.
 554  *  returns the number of block devices registered.
 555  */
 556 static int __init cpqarray_init(void)
 557 {
 558         int num_cntlrs_reg = 0;
 559         int i;
 560         int rc = 0;
 561
 562         /* detect controllers */
 563         printk(DRIVER_NAME "\n");
 564
 565         rc = pci_register_driver(&cpqarray_pci_driver);
 566         if (rc)
 567                 return rc;
 568         cpqarray_eisa_detect();
 569
 570         for (i=0; i < MAX_CTLR; i++) {
 571                 if (hba[i] != NULL)
 572                         num_cntlrs_reg++;
 573         }
 574
 575         return(num_cntlrs_reg);
 576 }
 577
 578 /* Function to find the first free pointer into our hba[] array */
 579 /* Returns -1 if no free entries are left.  */
 580 static int alloc_cpqarray_hba(void)
 581 {
 582         int i;
 583
 584         for(i=0; i< MAX_CTLR; i++) {
 585                 if (hba[i] == NULL) {
 586                         hba[i] = kmalloc(sizeof(ctlr_info_t), GFP_KERNEL);
 587                         if(hba[i]==NULL) {
 588                                 printk(KERN_ERR "cpqarray: out of memory.\n");
 589                                 return (-1);
 590                         }
 591                         return (i);
 592                 }
 593         }
 594         printk(KERN_WARNING "cpqarray: This driver supports a maximum"
 595                 " of 8 controllers.\n");
 596         return(-1);
 597 }
 598
 599 static void free_hba(int i)
 600 {
 601         kfree(hba[i]);
 602         hba[i]=NULL;
 603 }
 604
 605 /*
 606  * Find the IO address of the controller, its IRQ and so forth.  Fill
 607  * in some basic stuff into the ctlr_info_t structure.
 608  */
 609 static int cpqarray_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
 610 {
 611         ushort vendor_id, device_id, command;
 612         unchar cache_line_size, latency_timer;
 613         unchar irq, revision;
 614         unsigned long addr[6];
 615         __u32 board_id;
 616
 617         int i;
 618
 619         c->pci_dev = pdev;
 620         if (pci_enable_device(pdev)) {
 621                 printk(KERN_ERR "cpqarray: Unable to Enable PCI device\n");
 622                 return -1;
 623         }
 624         vendor_id = pdev->vendor;
 625         device_id = pdev->device;
 626         irq = pdev->irq;
 627
 628         for(i=0; i<6; i++)
 629                 addr[i] = pci_resource_start(pdev, i);
 630
 631         if (pci_set_dma_mask(pdev, CPQARRAY_DMA_MASK) != 0)
 632         {
 633                 printk(KERN_ERR "cpqarray: Unable to set DMA mask\n");
 634                 return -1;
 635         }
 636
 637         pci_read_config_word(pdev, PCI_COMMAND, &command);
 638         pci_read_config_byte(pdev, PCI_CLASS_REVISION, &revision);
 639         pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &cache_line_size);
 640         pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &latency_timer);
 641
 642         pci_read_config_dword(pdev, 0x2c, &board_id);
 643
 644         /* check to see if controller has been disabled */
 645         if(!(command & 0x02)) {
 646                 printk(KERN_WARNING
 647                         "cpqarray: controller appears to be disabled\n");
 648                 return(-1);
 649         }
 650
 651 DBGINFO(
 652         printk("vendor_id = %x\n", vendor_id);
 653         printk("device_id = %x\n", device_id);
 654         printk("command = %x\n", command);
 655         for(i=0; i<6; i++)
 656                 printk("addr[%d] = %lx\n", i, addr[i]);
 657         printk("revision = %x\n", revision);
 658         printk("irq = %x\n", irq);
 659         printk("cache_line_size = %x\n", cache_line_size);
 660         printk("latency_timer = %x\n", latency_timer);
 661         printk("board_id = %x\n", board_id);
 662 );
 663
 664         c->intr = irq;
 665
 666         for(i=0; i<6; i++) {
 667                 if (pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE_IO)
 668                 { /* IO space */
 669                         c->io_mem_addr = addr[i];
 670                         c->io_mem_length = pci_resource_end(pdev, i)
 671                                 - pci_resource_start(pdev, i) + 1;
 672                         if(!request_region( c->io_mem_addr, c->io_mem_length,
 673                                 "cpqarray"))
 674                         {
 675                                 printk( KERN_WARNING "cpqarray I/O memory range already in use addr %lx length = %ld\n", c->io_mem_addr, c->io_mem_length);
 676                                 c->io_mem_addr = 0;
 677                                 c->io_mem_length = 0;
 678                         }
 679                         break;
 680                 }
 681         }
 682
 683         c->paddr = 0;
 684         for(i=0; i<6; i++)
 685                 if (!(pci_resource_flags(pdev, i) &
 686                                 PCI_BASE_ADDRESS_SPACE_IO)) {
 687                         c->paddr = pci_resource_start (pdev, i);
 688                         break;
 689                 }
 690         if (!c->paddr)
 691                 return -1;
 692         c->vaddr = remap_pci_mem(c->paddr, 128);
 693         if (!c->vaddr)
 694                 return -1;
 695         c->board_id = board_id;
 696
 697         for(i=0; i<NR_PRODUCTS; i++) {
 698                 if (board_id == products[i].board_id) {
 699                         c->product_name = products[i].product_name;
 700                         c->access = *(products[i].access);
 701                         break;
 702                 }
 703         }
 704         if (i == NR_PRODUCTS) {
 705                 printk(KERN_WARNING "cpqarray: Sorry, I don't know how"
 706                         " to access the SMART Array controller %08lx\n",
 707                                 (unsigned long)board_id);
 708                 return -1;
 709         }
 710
 711         return 0;
 712 }
 713
 714 /*
 715  * Map (physical) PCI mem into (virtual) kernel space
 716  */
 717 static void __iomem *remap_pci_mem(ulong base, ulong size)
 718 {
 719         ulong page_base        = ((ulong) base) & PAGE_MASK;
 720         ulong page_offs        = ((ulong) base) - page_base;
 721         void __iomem *page_remapped    = ioremap(page_base, page_offs+size);
 722
 723         return (page_remapped ? (page_remapped + page_offs) : NULL);
 724 }
 725
 726 #ifndef MODULE
 727 /*
 728  * Config string is a comma separated set of i/o addresses of EISA cards.
 729  */
 730 static int cpqarray_setup(char *str)
 731 {
 732         int i, ints[9];
 733
 734         (void)get_options(str, ARRAY_SIZE(ints), ints);
 735
 736         for(i=0; i<ints[0] && i<8; i++)
 737                 eisa[i] = ints[i+1];
 738         return 1;
 739 }
 740
 741 __setup("smart2=", cpqarray_setup);
 742
 743 #endif
 744
 745 /*
 746  * Find an EISA controller's signature.  Set up an hba if we find it.
 747  */
 748 static int cpqarray_eisa_detect(void)
 749 {
 750         int i=0, j;
 751         __u32 board_id;
 752         int intr;
 753         int ctlr;
 754         int num_ctlr = 0;
 755
 756         while(i<8 && eisa[i]) {
 757                 ctlr = alloc_cpqarray_hba();
 758                 if(ctlr == -1)
 759                         break;
 760                 board_id = inl(eisa[i]+0xC80);
 761                 for(j=0; j < NR_PRODUCTS; j++)
 762                         if (board_id == products[j].board_id)
 763                                 break;
 764
 765                 if (j == NR_PRODUCTS) {
 766                         printk(KERN_WARNING "cpqarray: Sorry, I don't know how"
 767                                 " to access the SMART Array controller %08lx\n",                                 (unsigned long)board_id);
 768                         continue;
 769                 }
 770
 771                 memset(hba[ctlr], 0, sizeof(ctlr_info_t));
 772                 hba[ctlr]->io_mem_addr = eisa[i];
 773                 hba[ctlr]->io_mem_length = 0x7FF;
 774                 if(!request_region(hba[ctlr]->io_mem_addr,
 775                                 hba[ctlr]->io_mem_length,
 776                                 "cpqarray"))
 777                 {
 778                         printk(KERN_WARNING "cpqarray: I/O range already in "
 779                                         "use addr = %lx length = %ld\n",
 780                                         hba[ctlr]->io_mem_addr,
 781                                         hba[ctlr]->io_mem_length);
 782                         free_hba(ctlr);
 783                         continue;
 784                 }
 785
 786                 /*
 787                  * Read the config register to find our interrupt
 788                  */
 789                 intr = inb(eisa[i]+0xCC0) >> 4;
 790                 if (intr & 1) intr = 11;
 791                 else if (intr & 2) intr = 10;
 792                 else if (intr & 4) intr = 14;
 793                 else if (intr & 8) intr = 15;
 794
 795                 hba[ctlr]->intr = intr;
 796                 sprintf(hba[ctlr]->devname, "ida%d", nr_ctlr);
 797                 hba[ctlr]->product_name = products[j].product_name;
 798                 hba[ctlr]->access = *(products[j].access);
 799                 hba[ctlr]->ctlr = ctlr;
 800                 hba[ctlr]->board_id = board_id;
 801                 hba[ctlr]->pci_dev = NULL; /* not PCI */
 802
 803 DBGINFO(
 804         printk("i = %d, j = %d\n", i, j);
 805         printk("irq = %x\n", intr);
 806         printk("product name = %s\n", products[j].product_name);
 807         printk("board_id = %x\n", board_id);
 808 );
 809
 810                 num_ctlr++;
 811                 i++;
 812
 813                 if (cpqarray_register_ctlr(ctlr, NULL) == -1)
 814                         printk(KERN_WARNING
 815                                 "cpqarray: Can't register EISA controller %d\n",
 816                                 ctlr);
 817
 818         }
 819
 820         return num_ctlr;
 821 }
 822
 823 /*
 824  * Open.  Make sure the device is really there.
 825  */
 826 static int ida_open(struct inode *inode, struct file *filep)
 827 {
 828         drv_info_t *drv = get_drv(inode->i_bdev->bd_disk);
 829         ctlr_info_t *host = get_host(inode->i_bdev->bd_disk);
 830
 831         DBGINFO(printk("ida_open %s\n", inode->i_bdev->bd_disk->disk_name));
 832         /*
 833          * Root is allowed to open raw volume zero even if it's not configured
 834          * so array config can still work.  I don't think I really like this,
 835          * but I'm already using way to many device nodes to claim another one
 836          * for "raw controller".
 837          */
 838         if (!drv->nr_blks) {
 839                 if (!capable(CAP_SYS_RAWIO))
 840                         return -ENXIO;
 841                 if (!capable(CAP_SYS_ADMIN) && drv != host->drv)
 842                         return -ENXIO;
 843         }
 844         host->usage_count++;
 845         return 0;
 846 }
 847
 848 /*
 849  * Close.  Sync first.
 850  */
 851 static int ida_release(struct inode *inode, struct file *filep)
 852 {
 853         ctlr_info_t *host = get_host(inode->i_bdev->bd_disk);
 854         host->usage_count--;
 855         return 0;
 856 }
 857
 858 /*
 859  * Enqueuing and dequeuing functions for cmdlists.
 860  */
 861 static inline void addQ(cmdlist_t **Qptr, cmdlist_t *c)
 862 {
 863         if (*Qptr == NULL) {
 864                 *Qptr = c;
 865                 c->next = c->prev = c;
 866         } else {
 867                 c->prev = (*Qptr)->prev;
 868                 c->next = (*Qptr);
 869                 (*Qptr)->prev->next = c;
 870                 (*Qptr)->prev = c;
 871         }
 872 }
 873
 874 static inline cmdlist_t *removeQ(cmdlist_t **Qptr, cmdlist_t *c)
 875 {
 876         if (c && c->next != c) {
 877                 if (*Qptr == c) *Qptr = c->next;
 878                 c->prev->next = c->next;
 879                 c->next->prev = c->prev;
 880         } else {
 881                 *Qptr = NULL;
 882         }
 883         return c;
 884 }
 885
 886 /*
 887  * Get a request and submit it to the controller.
 888  * This routine needs to grab all the requests it possibly can from the
 889  * req Q and submit them.  Interrupts are off (and need to be off) when you
 890  * are in here (either via the dummy do_ida_request functions or by being
 891  * called from the interrupt handler
 892  */
 893 static void do_ida_request(request_queue_t *q)
 894 {
 895         ctlr_info_t *h = q->queuedata;
 896         cmdlist_t *c;
 897         struct request *creq;
 898         struct scatterlist tmp_sg[SG_MAX];
 899         int i, dir, seg;
 900
 901         if (blk_queue_plugged(q))
 902                 goto startio;
 903
 904 queue_next:
 905         creq = elv_next_request(q);
 906         if (!creq)
 907                 goto startio;
 908
 909         BUG_ON(creq->nr_phys_segments > SG_MAX);
 910
 911         if ((c = cmd_alloc(h,1)) == NULL)
 912                 goto startio;
 913
 914         blkdev_dequeue_request(creq);
 915
 916         c->ctlr = h->ctlr;
 917         c->hdr.unit = (drv_info_t *)(creq->rq_disk->private_data) - h->drv;
 918         c->hdr.size = sizeof(rblk_t) >> 2;
 919         c->size += sizeof(rblk_t);
 920
 921         c->req.hdr.blk = creq->sector;
 922         c->rq = creq;
 923 DBGPX(
 924         printk("sector=%d, nr_sectors=%d\n", creq->sector, creq->nr_sectors);
 925 );
 926         seg = blk_rq_map_sg(q, creq, tmp_sg);
 927
 928         /* Now do all the DMA Mappings */
 929         if (rq_data_dir(creq) == READ)
 930                 dir = PCI_DMA_FROMDEVICE;
 931         else
 932                 dir = PCI_DMA_TODEVICE;
 933         for( i=0; i < seg; i++)
 934         {
 935                 c->req.sg[i].size = tmp_sg[i].length;
 936                 c->req.sg[i].addr = (__u32) pci_map_page(h->pci_dev,
 937                                                  tmp_sg[i].page,
 938                                                  tmp_sg[i].offset,
 939                                                  tmp_sg[i].length, dir);
 940         }
 941 DBGPX(  printk("Submitting %d sectors in %d segments\n", creq->nr_sectors, seg); );
 942         c->req.hdr.sg_cnt = seg;
 943         c->req.hdr.blk_cnt = creq->nr_sectors;
 944         c->req.hdr.cmd = (rq_data_dir(creq) == READ) ? IDA_READ : IDA_WRITE;
 945         c->type = CMD_RWREQ;
 946
 947         /* Put the request on the tail of the request queue */
 948         addQ(&h->reqQ, c);
 949         h->Qdepth++;
 950         if (h->Qdepth > h->maxQsinceinit)
 951                 h->maxQsinceinit = h->Qdepth;
 952
 953         goto queue_next;
 954
 955 startio:
 956         start_io(h);
 957 }
 958
 959 /*
 960  * start_io submits everything on a controller's request queue
 961  * and moves it to the completion queue.
 962  *
 963  * Interrupts had better be off if you're in here
 964  */
 965 static void start_io(ctlr_info_t *h)
 966 {
 967         cmdlist_t *c;
 968
 969         while((c = h->reqQ) != NULL) {
 970                 /* Can't do anything if we're busy */
 971                 if (h->access.fifo_full(h) == 0)
 972                         return;
 973
 974                 /* Get the first entry from the request Q */
 975                 removeQ(&h->reqQ, c);
 976                 h->Qdepth--;
 977
 978                 /* Tell the controller to do our bidding */
 979                 h->access.submit_command(h, c);
 980
 981                 /* Get onto the completion Q */
 982                 addQ(&h->cmpQ, c);
 983         }
 984 }
 985
 986 static inline void complete_buffers(struct bio *bio, int ok)
 987 {
 988         struct bio *xbh;
 989         while(bio) {
 990                 int nr_sectors = bio_sectors(bio);
 991
 992                 xbh = bio->bi_next;
 993                 bio->bi_next = NULL;
 994
 995                 blk_finished_io(nr_sectors);
 996                 bio_endio(bio, nr_sectors << 9, ok ? 0 : -EIO);
 997
 998                 bio = xbh;
 999         }
1000 }
1001 /*
1002  * Mark all buffers that cmd was responsible for
1003  */
1004 static inline void complete_command(cmdlist_t *cmd, int timeout)
1005 {
1006         int ok=1;
1007         int i, ddir;
1008
1009         if (cmd->req.hdr.rcode & RCODE_NONFATAL &&
1010            (hba[cmd->ctlr]->misc_tflags & MISC_NONFATAL_WARN) == 0) {
1011                 printk(KERN_NOTICE "Non Fatal error on ida/c%dd%d\n",
1012                                 cmd->ctlr, cmd->hdr.unit);
1013                 hba[cmd->ctlr]->misc_tflags |= MISC_NONFATAL_WARN;
1014         }
1015         if (cmd->req.hdr.rcode & RCODE_FATAL) {
1016                 printk(KERN_WARNING "Fatal error on ida/c%dd%d\n",
1017                                 cmd->ctlr, cmd->hdr.unit);
1018                 ok = 0;
1019         }
1020         if (cmd->req.hdr.rcode & RCODE_INVREQ) {
1021                                 printk(KERN_WARNING "Invalid request on ida/c%dd%d = (cmd=%x sect=%d cnt=%d sg=%d ret=%x)\n",
1022                                 cmd->ctlr, cmd->hdr.unit, cmd->req.hdr.cmd,
1023                                 cmd->req.hdr.blk, cmd->req.hdr.blk_cnt,
1024                                 cmd->req.hdr.sg_cnt, cmd->req.hdr.rcode);
1025                 ok = 0;
1026         }
1027         if (timeout) ok = 0;
1028         /* unmap the DMA mapping for all the scatter gather elements */
1029         if (cmd->req.hdr.cmd == IDA_READ)
1030                 ddir = PCI_DMA_FROMDEVICE;
1031         else
1032                 ddir = PCI_DMA_TODEVICE;
1033         for(i=0; i<cmd->req.hdr.sg_cnt; i++)
1034                 pci_unmap_page(hba[cmd->ctlr]->pci_dev, cmd->req.sg[i].addr,
1035                                 cmd->req.sg[i].size, ddir);
1036
1037         complete_buffers(cmd->rq->bio, ok);
1038
1039         DBGPX(printk("Done with %p\n", cmd->rq););
1040         end_that_request_last(cmd->rq, ok ? 1 : -EIO);
1041 }
1042
1043 /*
1044  *  The controller will interrupt us upon completion of commands.
1045  *  Find the command on the completion queue, remove it, tell the OS and
1046  *  try to queue up more IO
1047  */
1048 static irqreturn_t do_ida_intr(int irq, void *dev_id, struct pt_regs *regs)
1049 {
1050         ctlr_info_t *h = dev_id;
1051         cmdlist_t *c;
1052         unsigned long istat;
1053         unsigned long flags;
1054         __u32 a,a1;
1055
1056         istat = h->access.intr_pending(h);
1057         /* Is this interrupt for us? */
1058         if (istat == 0)
1059                 return IRQ_NONE;
1060
1061         /*
1062          * If there are completed commands in the completion queue,
1063          * we had better do something about it.
1064          */
1065         spin_lock_irqsave(IDA_LOCK(h->ctlr), flags);
1066         if (istat & FIFO_NOT_EMPTY) {
1067                 while((a = h->access.command_completed(h))) {
1068                         a1 = a; a &= ~3;
1069                         if ((c = h->cmpQ) == NULL)
1070                         {
1071                                 printk(KERN_WARNING "cpqarray: Completion of %08lx ignored\n", (unsigned long)a1);
1072                                 continue;
1073                         }
1074                         while(c->busaddr != a) {
1075                                 c = c->next;
1076                                 if (c == h->cmpQ)
1077                                         break;
1078                         }
1079                         /*
1080                          * If we've found the command, take it off the
1081                          * completion Q and free it
1082                          */
1083                         if (c->busaddr == a) {
1084                                 removeQ(&h->cmpQ, c);
1085                                 /*  Check for invalid command.
1086                                  *  Controller returns command error,
1087                                  *  But rcode = 0.
1088                                  */
1089
1090                                 if((a1 & 0x03) && (c->req.hdr.rcode == 0))
1091                                 {
1092                                         c->req.hdr.rcode = RCODE_INVREQ;
1093                                 }
1094                                 if (c->type == CMD_RWREQ) {
1095                                         complete_command(c, 0);
1096                                         cmd_free(h, c, 1);
1097                                 } else if (c->type == CMD_IOCTL_PEND) {
1098                                         c->type = CMD_IOCTL_DONE;
1099                                 }
1100                                 continue;
1101                         }
1102                 }
1103         }
1104
1105         /*
1106          * See if we can queue up some more IO
1107          */
1108         do_ida_request(h->queue);
1109         spin_unlock_irqrestore(IDA_LOCK(h->ctlr), flags);
1110         return IRQ_HANDLED;
1111 }
1112
1113 /*
1114  * This timer was for timing out requests that haven't happened after
1115  * IDA_TIMEOUT.  That wasn't such a good idea.  This timer is used to
1116  * reset a flags structure so we don't flood the user with
1117  * "Non-Fatal error" messages.
1118  */
1119 static void ida_timer(unsigned long tdata)
1120 {
1121         ctlr_info_t *h = (ctlr_info_t*)tdata;
1122
1123         h->timer.expires = jiffies + IDA_TIMER;
1124         add_timer(&h->timer);
1125         h->misc_tflags = 0;
1126 }
1127
1128 static int ida_getgeo(struct block_device *bdev, struct hd_geometry *geo)
1129 {
1130         drv_info_t *drv = get_drv(bdev->bd_disk);
1131
1132         if (drv->cylinders) {
1133                 geo->heads = drv->heads;
1134                 geo->sectors = drv->sectors;
1135                 geo->cylinders = drv->cylinders;
1136         } else {
1137                 geo->heads = 0xff;
1138                 geo->sectors = 0x3f;
1139                 geo->cylinders = drv->nr_blks / (0xff*0x3f);
1140         }
1141
1142         return 0;
1143 }
1144
1145 /*
1146  *  ida_ioctl does some miscellaneous stuff like reporting drive geometry,
1147  *  setting readahead and submitting commands from userspace to the controller.
1148  */
1149 static int ida_ioctl(struct inode *inode, struct file *filep, unsigned int cmd, unsigned long arg)
1150 {
1151         drv_info_t *drv = get_drv(inode->i_bdev->bd_disk);
1152         ctlr_info_t *host = get_host(inode->i_bdev->bd_disk);
1153         int error;
1154         ida_ioctl_t __user *io = (ida_ioctl_t __user *)arg;
1155         ida_ioctl_t *my_io;
1156
1157         switch(cmd) {
1158         case IDAGETDRVINFO:
1159                 if (copy_to_user(&io->c.drv, drv, sizeof(drv_info_t)))
1160                         return -EFAULT;
1161                 return 0;
1162         case IDAPASSTHRU:
1163                 if (!capable(CAP_SYS_RAWIO))
1164                         return -EPERM;
1165                 my_io = kmalloc(sizeof(ida_ioctl_t), GFP_KERNEL);
1166                 if (!my_io)
1167                         return -ENOMEM;
1168                 error = -EFAULT;
1169                 if (copy_from_user(my_io, io, sizeof(*my_io)))
1170                         goto out_passthru;
1171                 error = ida_ctlr_ioctl(host, drv - host->drv, my_io);
1172                 if (error)
1173                         goto out_passthru;
1174                 error = -EFAULT;
1175                 if (copy_to_user(io, my_io, sizeof(*my_io)))
1176                         goto out_passthru;
1177                 error = 0;
1178 out_passthru:
1179                 kfree(my_io);
1180                 return error;
1181         case IDAGETCTLRSIG:
1182                 if (!arg) return -EINVAL;
1183                 put_user(host->ctlr_sig, (int __user *)arg);
1184                 return 0;
1185         case IDAREVALIDATEVOLS:
1186                 if (iminor(inode) != 0)
1187                         return -ENXIO;
1188                 return revalidate_allvol(host);
1189         case IDADRIVERVERSION:
1190                 if (!arg) return -EINVAL;
1191                 put_user(DRIVER_VERSION, (unsigned long __user *)arg);
1192                 return 0;
1193         case IDAGETPCIINFO:
1194         {
1195
1196                 ida_pci_info_struct pciinfo;
1197
1198                 if (!arg) return -EINVAL;
1199                 pciinfo.bus = host->pci_dev->bus->number;
1200                 pciinfo.dev_fn = host->pci_dev->devfn;
1201                 pciinfo.board_id = host->board_id;
1202                 if(copy_to_user((void __user *) arg, &pciinfo,
1203                         sizeof( ida_pci_info_struct)))
1204                                 return -EFAULT;
1205                 return(0);
1206         }
1207
1208         default:
1209                 return -EINVAL;
1210         }
1211
1212 }
1213 /*
1214  * ida_ctlr_ioctl is for passing commands to the controller from userspace.
1215  * The command block (io) has already been copied to kernel space for us,
1216  * however, any elements in the sglist need to be copied to kernel space
1217  * or copied back to userspace.
1218  *
1219  * Only root may perform a controller passthru command, however I'm not doing
1220  * any serious sanity checking on the arguments.  Doing an IDA_WRITE_MEDIA and
1221  * putting a 64M buffer in the sglist is probably a *bad* idea.
1222  */
1223 static int ida_ctlr_ioctl(ctlr_info_t *h, int dsk, ida_ioctl_t *io)
1224 {
1225         int ctlr = h->ctlr;
1226         cmdlist_t *c;
1227         void *p = NULL;
1228         unsigned long flags;
1229         int error;
1230
1231         if ((c = cmd_alloc(h, 0)) == NULL)
1232                 return -ENOMEM;
1233         c->ctlr = ctlr;
1234         c->hdr.unit = (io->unit & UNITVALID) ? (io->unit & ~UNITVALID) : dsk;
1235         c->hdr.size = sizeof(rblk_t) >> 2;
1236         c->size += sizeof(rblk_t);
1237
1238         c->req.hdr.cmd = io->cmd;
1239         c->req.hdr.blk = io->blk;
1240         c->req.hdr.blk_cnt = io->blk_cnt;
1241         c->type = CMD_IOCTL_PEND;
1242
1243         /* Pre submit processing */
1244         switch(io->cmd) {
1245         case PASSTHRU_A:
1246                 p = kmalloc(io->sg[0].size, GFP_KERNEL);
1247                 if (!p)
1248                 {
1249                         error = -ENOMEM;
1250                         cmd_free(h, c, 0);
1251                         return(error);
1252                 }
1253                 if (copy_from_user(p, io->sg[0].addr, io->sg[0].size)) {
1254                         kfree(p);
1255                         cmd_free(h, c, 0);
1256                         return -EFAULT;
1257                 }
1258                 c->req.hdr.blk = pci_map_single(h->pci_dev, &(io->c),
1259                                 sizeof(ida_ioctl_t),
1260                                 PCI_DMA_BIDIRECTIONAL);
1261                 c->req.sg[0].size = io->sg[0].size;
1262                 c->req.sg[0].addr = pci_map_single(h->pci_dev, p,
1263                         c->req.sg[0].size, PCI_DMA_BIDIRECTIONAL);
1264                 c->req.hdr.sg_cnt = 1;
1265                 break;
1266         case IDA_READ:
1267         case READ_FLASH_ROM:
1268         case SENSE_CONTROLLER_PERFORMANCE:
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
1277                 c->req.sg[0].size = io->sg[0].size;
1278                 c->req.sg[0].addr = pci_map_single(h->pci_dev, p,
1279                         c->req.sg[0].size, PCI_DMA_BIDIRECTIONAL);
1280                 c->req.hdr.sg_cnt = 1;
1281                 break;
1282         case IDA_WRITE:
1283         case IDA_WRITE_MEDIA:
1284         case DIAG_PASS_THRU:
1285         case COLLECT_BUFFER:
1286         case WRITE_FLASH_ROM:
1287                 p = kmalloc(io->sg[0].size, GFP_KERNEL);
1288                 if (!p)
1289                 {
1290                         error = -ENOMEM;
1291                         cmd_free(h, c, 0);
1292                         return(error);
1293                 }
1294                 if (copy_from_user(p, io->sg[0].addr, io->sg[0].size)) {
1295                         kfree(p);
1296                         cmd_free(h, c, 0);
1297                         return -EFAULT;
1298                 }
1299                 c->req.sg[0].size = io->sg[0].size;
1300                 c->req.sg[0].addr = pci_map_single(h->pci_dev, p,
1301                         c->req.sg[0].size, PCI_DMA_BIDIRECTIONAL);
1302                 c->req.hdr.sg_cnt = 1;
1303                 break;
1304         default:
1305                 c->req.sg[0].size = sizeof(io->c);
1306                 c->req.sg[0].addr = pci_map_single(h->pci_dev,&io->c,
1307                         c->req.sg[0].size, PCI_DMA_BIDIRECTIONAL);
1308                 c->req.hdr.sg_cnt = 1;
1309         }
1310
1311         /* Put the request on the tail of the request queue */
1312         spin_lock_irqsave(IDA_LOCK(ctlr), flags);
1313         addQ(&h->reqQ, c);
1314         h->Qdepth++;
1315         start_io(h);
1316         spin_unlock_irqrestore(IDA_LOCK(ctlr), flags);
1317
1318         /* Wait for completion */
1319         while(c->type != CMD_IOCTL_DONE)
1320                 schedule();
1321
1322         /* Unmap the DMA  */
1323         pci_unmap_single(h->pci_dev, c->req.sg[0].addr, c->req.sg[0].size,
1324                 PCI_DMA_BIDIRECTIONAL);
1325         /* Post submit processing */
1326         switch(io->cmd) {
1327         case PASSTHRU_A:
1328                 pci_unmap_single(h->pci_dev, c->req.hdr.blk,
1329                                 sizeof(ida_ioctl_t),
1330                                 PCI_DMA_BIDIRECTIONAL);
1331         case IDA_READ:
1332         case DIAG_PASS_THRU:
1333         case SENSE_CONTROLLER_PERFORMANCE:
1334         case READ_FLASH_ROM:
1335                 if (copy_to_user(io->sg[0].addr, p, io->sg[0].size)) {
1336                         kfree(p);
1337                         return -EFAULT;
1338                 }
1339                 /* fall through and free p */
1340         case IDA_WRITE:
1341         case IDA_WRITE_MEDIA:
1342         case COLLECT_BUFFER:
1343         case WRITE_FLASH_ROM:
1344                 kfree(p);
1345                 break;
1346         default:;
1347                 /* Nothing to do */
1348         }
1349
1350         io->rcode = c->req.hdr.rcode;
1351         cmd_free(h, c, 0);
1352         return(0);
1353 }
1354
1355 /*
1356  * Commands are pre-allocated in a large block.  Here we use a simple bitmap
1357  * scheme to suballocte them to the driver.  Operations that are not time
1358  * critical (and can wait for kmalloc and possibly sleep) can pass in NULL
1359  * as the first argument to get a new command.
1360  */
1361 static cmdlist_t * cmd_alloc(ctlr_info_t *h, int get_from_pool)
1362 {
1363         cmdlist_t * c;
1364         int i;
1365         dma_addr_t cmd_dhandle;
1366
1367         if (!get_from_pool) {
1368                 c = (cmdlist_t*)pci_alloc_consistent(h->pci_dev,
1369                         sizeof(cmdlist_t), &cmd_dhandle);
1370                 if(c==NULL)
1371                         return NULL;
1372         } else {
1373                 do {
1374                         i = find_first_zero_bit(h->cmd_pool_bits, NR_CMDS);
1375                         if (i == NR_CMDS)
1376                                 return NULL;
1377                 } while(test_and_set_bit(i&(BITS_PER_LONG-1), h->cmd_pool_bits+(i/BITS_PER_LONG)) != 0);
1378                 c = h->cmd_pool + i;
1379                 cmd_dhandle = h->cmd_pool_dhandle + i*sizeof(cmdlist_t);
1380                 h->nr_allocs++;
1381         }
1382
1383         memset(c, 0, sizeof(cmdlist_t));
1384         c->busaddr = cmd_dhandle;
1385         return c;
1386 }
1387
1388 static void cmd_free(ctlr_info_t *h, cmdlist_t *c, int got_from_pool)
1389 {
1390         int i;
1391
1392         if (!got_from_pool) {
1393                 pci_free_consistent(h->pci_dev, sizeof(cmdlist_t), c,
1394                         c->busaddr);
1395         } else {
1396                 i = c - h->cmd_pool;
1397                 clear_bit(i&(BITS_PER_LONG-1), h->cmd_pool_bits+(i/BITS_PER_LONG));
1398                 h->nr_frees++;
1399         }
1400 }
1401
1402 /***********************************************************************
1403     name:        sendcmd
1404     Send a command to an IDA using the memory mapped FIFO interface
1405     and wait for it to complete.
1406     This routine should only be called at init time.
1407 ***********************************************************************/
1408 static int sendcmd(
1409         __u8    cmd,
1410         int     ctlr,
1411         void    *buff,
1412         size_t  size,
1413         unsigned int blk,
1414         unsigned int blkcnt,
1415         unsigned int log_unit )
1416 {
1417         cmdlist_t *c;
1418         int complete;
1419         unsigned long temp;
1420         unsigned long i;
1421         ctlr_info_t *info_p = hba[ctlr];
1422
1423         c = cmd_alloc(info_p, 1);
1424         if(!c)
1425                 return IO_ERROR;
1426         c->ctlr = ctlr;
1427         c->hdr.unit = log_unit;
1428         c->hdr.prio = 0;
1429         c->hdr.size = sizeof(rblk_t) >> 2;
1430         c->size += sizeof(rblk_t);
1431
1432         /* The request information. */
1433         c->req.hdr.next = 0;
1434         c->req.hdr.rcode = 0;
1435         c->req.bp = 0;
1436         c->req.hdr.sg_cnt = 1;
1437         c->req.hdr.reserved = 0;
1438
1439         if (size == 0)
1440                 c->req.sg[0].size = 512;
1441         else
1442                 c->req.sg[0].size = size;
1443
1444         c->req.hdr.blk = blk;
1445         c->req.hdr.blk_cnt = blkcnt;
1446         c->req.hdr.cmd = (unsigned char) cmd;
1447         c->req.sg[0].addr = (__u32) pci_map_single(info_p->pci_dev,
1448                 buff, c->req.sg[0].size, PCI_DMA_BIDIRECTIONAL);
1449         /*
1450          * Disable interrupt
1451          */
1452         info_p->access.set_intr_mask(info_p, 0);
1453         /* Make sure there is room in the command FIFO */
1454         /* Actually it should be completely empty at this time. */
1455         for (i = 200000; i > 0; i--) {
1456                 temp = info_p->access.fifo_full(info_p);
1457                 if (temp != 0) {
1458                         break;
1459                 }
1460                 udelay(10);
1461 DBG(
1462                 printk(KERN_WARNING "cpqarray ida%d: idaSendPciCmd FIFO full,"
1463                         " waiting!\n", ctlr);
1464 );
1465         }
1466         /*
1467          * Send the cmd
1468          */
1469         info_p->access.submit_command(info_p, c);
1470         complete = pollcomplete(ctlr);
1471
1472         pci_unmap_single(info_p->pci_dev, (dma_addr_t) c->req.sg[0].addr,
1473                 c->req.sg[0].size, PCI_DMA_BIDIRECTIONAL);
1474         if (complete != 1) {
1475                 if (complete != c->busaddr) {
1476                         printk( KERN_WARNING
1477                         "cpqarray ida%d: idaSendPciCmd "
1478                       "Invalid command list address returned! (%08lx)\n",
1479                                 ctlr, (unsigned long)complete);
1480                         cmd_free(info_p, c, 1);
1481                         return (IO_ERROR);
1482                 }
1483         } else {
1484                 printk( KERN_WARNING
1485                         "cpqarray ida%d: idaSendPciCmd Timeout out, "
1486                         "No command list address returned!\n",
1487                         ctlr);
1488                 cmd_free(info_p, c, 1);
1489                 return (IO_ERROR);
1490         }
1491
1492         if (c->req.hdr.rcode & 0x00FE) {
1493                 if (!(c->req.hdr.rcode & BIG_PROBLEM)) {
1494                         printk( KERN_WARNING
1495                         "cpqarray ida%d: idaSendPciCmd, error: "
1496                                 "Controller failed at init time "
1497                                 "cmd: 0x%x, return code = 0x%x\n",
1498                                 ctlr, c->req.hdr.cmd, c->req.hdr.rcode);
1499
1500                         cmd_free(info_p, c, 1);
1501                         return (IO_ERROR);
1502                 }
1503         }
1504         cmd_free(info_p, c, 1);
1505         return (IO_OK);
1506 }
1507
1508 /*
1509  * revalidate_allvol is for online array config utilities.  After a
1510  * utility reconfigures the drives in the array, it can use this function
1511  * (through an ioctl) to make the driver zap any previous disk structs for
1512  * that controller and get new ones.
1513  *
1514  * Right now I'm using the getgeometry() function to do this, but this
1515  * function should probably be finer grained and allow you to revalidate one
1516  * particualar logical volume (instead of all of them on a particular
1517  * controller).
1518  */
1519 static int revalidate_allvol(ctlr_info_t *host)
1520 {
1521         int ctlr = host->ctlr;
1522         int i;
1523         unsigned long flags;
1524
1525         spin_lock_irqsave(IDA_LOCK(ctlr), flags);
1526         if (host->usage_count > 1) {
1527                 spin_unlock_irqrestore(IDA_LOCK(ctlr), flags);
1528                 printk(KERN_WARNING "cpqarray: Device busy for volume"
1529                         " revalidation (usage=%d)\n", host->usage_count);
1530                 return -EBUSY;
1531         }
1532         host->usage_count++;
1533         spin_unlock_irqrestore(IDA_LOCK(ctlr), flags);
1534
1535         /*
1536          * Set the partition and block size structures for all volumes
1537          * on this controller to zero.  We will reread all of this data
1538          */
1539         set_capacity(ida_gendisk[ctlr][0], 0);
1540         for (i = 1; i < NWD; i++) {
1541                 struct gendisk *disk = ida_gendisk[ctlr][i];
1542                 if (disk->flags & GENHD_FL_UP)
1543                         del_gendisk(disk);
1544         }
1545         memset(host->drv, 0, sizeof(drv_info_t)*NWD);
1546
1547         /*
1548          * Tell the array controller not to give us any interrupts while
1549          * we check the new geometry.  Then turn interrupts back on when
1550          * we're done.
1551          */
1552         host->access.set_intr_mask(host, 0);
1553         getgeometry(ctlr);
1554         host->access.set_intr_mask(host, FIFO_NOT_EMPTY);
1555
1556         for(i=0; i<NWD; i++) {
1557                 struct gendisk *disk = ida_gendisk[ctlr][i];
1558                 drv_info_t *drv = &host->drv[i];
1559                 if (i && !drv->nr_blks)
1560                         continue;
1561                 blk_queue_hardsect_size(host->queue, drv->blk_size);
1562                 set_capacity(disk, drv->nr_blks);
1563                 disk->queue = host->queue;
1564                 disk->private_data = drv;
1565                 if (i)
1566                         add_disk(disk);
1567         }
1568
1569         host->usage_count--;
1570         return 0;
1571 }
1572
1573 static int ida_revalidate(struct gendisk *disk)
1574 {
1575         drv_info_t *drv = disk->private_data;
1576         set_capacity(disk, drv->nr_blks);
1577         return 0;
1578 }
1579
1580 /********************************************************************
1581     name: pollcomplete
1582     Wait polling for a command to complete.
1583     The memory mapped FIFO is polled for the completion.
1584     Used only at init time, interrupts disabled.
1585  ********************************************************************/
1586 static int pollcomplete(int ctlr)
1587 {
1588         int done;
1589         int i;
1590
1591         /* Wait (up to 2 seconds) for a command to complete */
1592
1593         for (i = 200000; i > 0; i--) {
1594                 done = hba[ctlr]->access.command_completed(hba[ctlr]);
1595                 if (done == 0) {
1596                         udelay(10);     /* a short fixed delay */
1597                 } else
1598                         return (done);
1599         }
1600         /* Invalid address to tell caller we ran out of time */
1601         return 1;
1602 }
1603 /*****************************************************************
1604     start_fwbk
1605     Starts controller firmwares background processing.
1606     Currently only the Integrated Raid controller needs this done.
1607     If the PCI mem address registers are written to after this,
1608          data corruption may occur
1609 *****************************************************************/
1610 static void start_fwbk(int ctlr)
1611 {
1612                 id_ctlr_t *id_ctlr_buf;
1613         int ret_code;
1614
1615         if(     (hba[ctlr]->board_id != 0x40400E11)
1616                 && (hba[ctlr]->board_id != 0x40480E11) )
1617
1618         /* Not a Integrated Raid, so there is nothing for us to do */
1619                 return;
1620         printk(KERN_DEBUG "cpqarray: Starting firmware's background"
1621                 " processing\n");
1622         /* Command does not return anything, but idasend command needs a
1623                 buffer */
1624         id_ctlr_buf = (id_ctlr_t *)kmalloc(sizeof(id_ctlr_t), GFP_KERNEL);
1625         if(id_ctlr_buf==NULL)
1626         {
1627                 printk(KERN_WARNING "cpqarray: Out of memory. "
1628                         "Unable to start background processing.\n");
1629                 return;
1630         }
1631         ret_code = sendcmd(RESUME_BACKGROUND_ACTIVITY, ctlr,
1632                 id_ctlr_buf, 0, 0, 0, 0);
1633         if(ret_code != IO_OK)
1634                 printk(KERN_WARNING "cpqarray: Unable to start"
1635                         " background processing\n");
1636
1637         kfree(id_ctlr_buf);
1638 }
1639 /*****************************************************************
1640     getgeometry
1641     Get ida logical volume geometry from the controller
1642     This is a large bit of code which once existed in two flavors,
1643     It is used only at init time.
1644 *****************************************************************/
1645 static void getgeometry(int ctlr)
1646 {
1647         id_log_drv_t *id_ldrive;
1648         id_ctlr_t *id_ctlr_buf;
1649         sense_log_drv_stat_t *id_lstatus_buf;
1650         config_t *sense_config_buf;
1651         unsigned int log_unit, log_index;
1652         int ret_code, size;
1653         drv_info_t *drv;
1654         ctlr_info_t *info_p = hba[ctlr];
1655         int i;
1656
1657         info_p->log_drv_map = 0;
1658
1659         id_ldrive = (id_log_drv_t *)kmalloc(sizeof(id_log_drv_t), GFP_KERNEL);
1660         if(id_ldrive == NULL)
1661         {
1662                 printk( KERN_ERR "cpqarray:  out of memory.\n");
1663                 return;
1664         }
1665
1666         id_ctlr_buf = (id_ctlr_t *)kmalloc(sizeof(id_ctlr_t), GFP_KERNEL);
1667         if(id_ctlr_buf == NULL)
1668         {
1669                 kfree(id_ldrive);
1670                 printk( KERN_ERR "cpqarray:  out of memory.\n");
1671                 return;
1672         }
1673
1674         id_lstatus_buf = (sense_log_drv_stat_t *)kmalloc(sizeof(sense_log_drv_stat_t), GFP_KERNEL);
1675         if(id_lstatus_buf == NULL)
1676         {
1677                 kfree(id_ctlr_buf);
1678                 kfree(id_ldrive);
1679                 printk( KERN_ERR "cpqarray:  out of memory.\n");
1680                 return;
1681         }
1682
1683         sense_config_buf = (config_t *)kmalloc(sizeof(config_t), GFP_KERNEL);
1684         if(sense_config_buf == NULL)
1685         {
1686                 kfree(id_lstatus_buf);
1687                 kfree(id_ctlr_buf);
1688                 kfree(id_ldrive);
1689                 printk( KERN_ERR "cpqarray:  out of memory.\n");
1690                 return;
1691         }
1692
1693         memset(id_ldrive, 0, sizeof(id_log_drv_t));
1694         memset(id_ctlr_buf, 0, sizeof(id_ctlr_t));
1695         memset(id_lstatus_buf, 0, sizeof(sense_log_drv_stat_t));
1696         memset(sense_config_buf, 0, sizeof(config_t));
1697
1698         info_p->phys_drives = 0;
1699         info_p->log_drv_map = 0;
1700         info_p->drv_assign_map = 0;
1701         info_p->drv_spare_map = 0;
1702         info_p->mp_failed_drv_map = 0;  /* only initialized here */
1703         /* Get controllers info for this logical drive */
1704         ret_code = sendcmd(ID_CTLR, ctlr, id_ctlr_buf, 0, 0, 0, 0);
1705         if (ret_code == IO_ERROR) {
1706                 /*
1707                  * If can't get controller info, set the logical drive map to 0,
1708                  * so the idastubopen will fail on all logical drives
1709                  * on the controller.
1710                  */
1711                  /* Free all the buffers and return */
1712                 printk(KERN_ERR "cpqarray: error sending ID controller\n");
1713                 kfree(sense_config_buf);
1714                 kfree(id_lstatus_buf);
1715                 kfree(id_ctlr_buf);
1716                 kfree(id_ldrive);
1717                 return;
1718         }
1719
1720         info_p->log_drives = id_ctlr_buf->nr_drvs;
1721         for(i=0;i<4;i++)
1722                 info_p->firm_rev[i] = id_ctlr_buf->firm_rev[i];
1723         info_p->ctlr_sig = id_ctlr_buf->cfg_sig;
1724
1725         printk(" (%s)\n", info_p->product_name);
1726         /*
1727          * Initialize logical drive map to zero
1728          */
1729         log_index = 0;
1730         /*
1731          * Get drive geometry for all logical drives
1732          */
1733         if (id_ctlr_buf->nr_drvs > 16)
1734                 printk(KERN_WARNING "cpqarray ida%d:  This driver supports "
1735                         "16 logical drives per controller.\n.  "
1736                         " Additional drives will not be "
1737                         "detected\n", ctlr);
1738
1739         for (log_unit = 0;
1740              (log_index < id_ctlr_buf->nr_drvs)
1741              && (log_unit < NWD);
1742              log_unit++) {
1743                 struct gendisk *disk = ida_gendisk[ctlr][log_unit];
1744
1745                 size = sizeof(sense_log_drv_stat_t);
1746
1747                 /*
1748                    Send "Identify logical drive status" cmd
1749                  */
1750                 ret_code = sendcmd(SENSE_LOG_DRV_STAT,
1751                              ctlr, id_lstatus_buf, size, 0, 0, log_unit);
1752                 if (ret_code == IO_ERROR) {
1753                         /*
1754                            If can't get logical drive status, set
1755                            the logical drive map to 0, so the
1756                            idastubopen will fail for all logical drives
1757                            on the controller.
1758                          */
1759                         info_p->log_drv_map = 0;
1760                         printk( KERN_WARNING
1761                              "cpqarray ida%d: idaGetGeometry - Controller"
1762                                 " failed to report status of logical drive %d\n"
1763                          "Access to this controller has been disabled\n",
1764                                 ctlr, log_unit);
1765                         /* Free all the buffers and return */
1766                         kfree(sense_config_buf);
1767                         kfree(id_lstatus_buf);
1768                         kfree(id_ctlr_buf);
1769                         kfree(id_ldrive);
1770                         return;
1771                 }
1772                 /*
1773                    Make sure the logical drive is configured
1774                  */
1775                 if (id_lstatus_buf->status != LOG_NOT_CONF) {
1776                         ret_code = sendcmd(ID_LOG_DRV, ctlr, id_ldrive,
1777                                sizeof(id_log_drv_t), 0, 0, log_unit);
1778                         /*
1779                            If error, the bit for this
1780                            logical drive won't be set and
1781                            idastubopen will return error.
1782                          */
1783                         if (ret_code != IO_ERROR) {
1784                                 drv = &info_p->drv[log_unit];
1785                                 drv->blk_size = id_ldrive->blk_size;
1786                                 drv->nr_blks = id_ldrive->nr_blks;
1787                                 drv->cylinders = id_ldrive->drv.cyl;
1788                                 drv->heads = id_ldrive->drv.heads;
1789                                 drv->sectors = id_ldrive->drv.sect_per_track;
1790                                 info_p->log_drv_map |=  (1 << log_unit);
1791
1792         printk(KERN_INFO "cpqarray ida/c%dd%d: blksz=%d nr_blks=%d\n",
1793                 ctlr, log_unit, drv->blk_size, drv->nr_blks);
1794                                 ret_code = sendcmd(SENSE_CONFIG,
1795                                                   ctlr, sense_config_buf,
1796                                  sizeof(config_t), 0, 0, log_unit);
1797                                 if (ret_code == IO_ERROR) {
1798                                         info_p->log_drv_map = 0;
1799                                         /* Free all the buffers and return */
1800                                         printk(KERN_ERR "cpqarray: error sending sense config\n");
1801                                         kfree(sense_config_buf);
1802                                         kfree(id_lstatus_buf);
1803                                         kfree(id_ctlr_buf);
1804                                         kfree(id_ldrive);
1805                                         return;
1806
1807                                 }
1808
1809                                 sprintf(disk->devfs_name, "ida/c%dd%d", ctlr, log_unit);
1810
1811                                 info_p->phys_drives =
1812                                     sense_config_buf->ctlr_phys_drv;
1813                                 info_p->drv_assign_map
1814                                     |= sense_config_buf->drv_asgn_map;
1815                                 info_p->drv_assign_map
1816                                     |= sense_config_buf->spare_asgn_map;
1817                                 info_p->drv_spare_map
1818                                     |= sense_config_buf->spare_asgn_map;
1819                         }       /* end of if no error on id_ldrive */
1820                         log_index = log_index + 1;
1821                 }               /* end of if logical drive configured */
1822         }                       /* end of for log_unit */
1823         kfree(sense_config_buf);
1824         kfree(id_ldrive);
1825         kfree(id_lstatus_buf);
1826         kfree(id_ctlr_buf);
1827         return;
1828
1829 }
1830
1831 static void __exit cpqarray_exit(void)
1832 {
1833         int i;
1834
1835         pci_unregister_driver(&cpqarray_pci_driver);
1836
1837         /* Double check that all controller entries have been removed */
1838         for(i=0; i<MAX_CTLR; i++) {
1839                 if (hba[i] != NULL) {
1840                         printk(KERN_WARNING "cpqarray: Removing EISA "
1841                                         "controller %d\n", i);
1842                         cpqarray_remove_one_eisa(i);
1843                 }
1844         }
1845
1846         devfs_remove("ida");
1847         remove_proc_entry("cpqarray", proc_root_driver);
1848 }
1849
1850 module_init(cpqarray_init)
1851 module_exit(cpqarray_exit)