drivers/scsi/gdth.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /************************************************************************
   3  * Linux driver for                                                     *
   4  * ICP vortex GmbH:    GDT PCI Disk Array Controllers                   *
   5  * Intel Corporation:  Storage RAID Controllers                         *
   6  *                                                                      *
   7  * gdth.c                                                               *
   8  * Copyright (C) 1995-06 ICP vortex GmbH, Achim Leubner                 *
   9  * Copyright (C) 2002-04 Intel Corporation                              *
  10  * Copyright (C) 2003-06 Adaptec Inc.                                   *
  11  * <achim_leubner@adaptec.com>                                          *
  12  *                                                                      *
  13  * Additions/Fixes:                                                     *
  14  * Boji Tony Kannanthanam <boji.t.kannanthanam@intel.com>               *
  15  * Johannes Dinner <johannes_dinner@adaptec.com>                        *
  16  *                                                                      *
  17  *                                                                      *
  18  * Linux kernel 2.6.x supported                                         *
  19  *                                                                      *
  20  ************************************************************************/
  21
  22 /* All GDT Disk Array Controllers are fully supported by this driver.
  23  * This includes the PCI SCSI Disk Array Controllers and the
  24  * PCI Fibre Channel Disk Array Controllers. See gdth.h for a complete
  25  * list of all controller types.
  26  *
  27  * After the optional list of IRQ values, other possible
  28  * command line options are:
  29  * disable:Y                    disable driver
  30  * disable:N                    enable driver
  31  * reserve_mode:0               reserve no drives for the raw service
  32  * reserve_mode:1               reserve all not init., removable drives
  33  * reserve_mode:2               reserve all not init. drives
  34  * reserve_list:h,b,t,l,h,b,t,l,...     reserve particular drive(s) with
  35  *                              h- controller no., b- channel no.,
  36  *                              t- target ID, l- LUN
  37  * reverse_scan:Y               reverse scan order for PCI controllers
  38  * reverse_scan:N               scan PCI controllers like BIOS
  39  * max_ids:x                    x - target ID count per channel (1..MAXID)
  40  * rescan:Y                     rescan all channels/IDs
  41  * rescan:N                     use all devices found until now
  42  * hdr_channel:x                x - number of virtual bus for host drives
  43  * shared_access:Y              disable driver reserve/release protocol to
  44  *                              access a shared resource from several nodes,
  45  *                              appropriate controller firmware required
  46  * shared_access:N              enable driver reserve/release protocol
  47  * force_dma32:Y                use only 32 bit DMA mode
  48  * force_dma32:N                use 64 bit DMA mode, if supported
  49  *
  50  * The default values are: "gdth=disable:N,reserve_mode:1,reverse_scan:N,
  51  *                          max_ids:127,rescan:N,hdr_channel:0,
  52  *                          shared_access:Y,force_dma32:N".
  53  * Here is another example: "gdth=reserve_list:0,1,2,0,0,1,3,0,rescan:Y".
  54  *
  55  * When loading the gdth driver as a module, the same options are available.
  56  * You can set the IRQs with "IRQ=...". However, the syntax to specify the
  57  * options changes slightly. You must replace all ',' between options
  58  * with ' ' and all ':' with '=' and you must use
  59  * '1' in place of 'Y' and '0' in place of 'N'.
  60  *
  61  * Default: "modprobe gdth disable=0 reserve_mode=1 reverse_scan=0
  62  *           max_ids=127 rescan=0 hdr_channel=0 shared_access=0
  63  *           force_dma32=0"
  64  * The other example: "modprobe gdth reserve_list=0,1,2,0,0,1,3,0 rescan=1".
  65  */
  66
  67 /* The meaning of the Scsi_Pointer members in this driver is as follows:
  68  * ptr:                     Chaining
  69  * this_residual:           unused
  70  * buffer:                  unused
  71  * dma_handle:              unused
  72  * buffers_residual:        unused
  73  * Status:                  unused
  74  * Message:                 unused
  75  * have_data_in:            unused
  76  * sent_command:            unused
  77  * phase:                   unused
  78  */
  79
  80 /* statistics */
  81 #define GDTH_STATISTICS
  82
  83 #include <linux/module.h>
  84
  85 #include <linux/version.h>
  86 #include <linux/kernel.h>
  87 #include <linux/types.h>
  88 #include <linux/pci.h>
  89 #include <linux/string.h>
  90 #include <linux/ctype.h>
  91 #include <linux/ioport.h>
  92 #include <linux/delay.h>
  93 #include <linux/interrupt.h>
  94 #include <linux/in.h>
  95 #include <linux/proc_fs.h>
  96 #include <linux/time.h>
  97 #include <linux/timer.h>
  98 #include <linux/dma-mapping.h>
  99 #include <linux/list.h>
 100 #include <linux/mutex.h>
 101 #include <linux/slab.h>
 102 #include <linux/reboot.h>
 103
 104 #include <asm/dma.h>
 105 #include <asm/io.h>
 106 #include <linux/uaccess.h>
 107 #include <linux/spinlock.h>
 108 #include <linux/blkdev.h>
 109 #include <linux/scatterlist.h>
 110
 111 #include "scsi.h"
 112 #include <scsi/scsi_host.h>
 113 #include "gdth.h"
 114
 115 static DEFINE_MUTEX(gdth_mutex);
 116 static void gdth_delay(int milliseconds);
 117 static void gdth_eval_mapping(u32 size, u32 *cyls, int *heads, int *secs);
 118 static irqreturn_t gdth_interrupt(int irq, void *dev_id);
 119 static irqreturn_t __gdth_interrupt(gdth_ha_str *ha,
 120                                     int gdth_from_wait, int* pIndex);
 121 static int gdth_sync_event(gdth_ha_str *ha, int service, u8 index,
 122                                                                struct scsi_cmnd *scp);
 123 static int gdth_async_event(gdth_ha_str *ha);
 124 static void gdth_log_event(gdth_evt_data *dvr, char *buffer);
 125
 126 static void gdth_putq(gdth_ha_str *ha, struct scsi_cmnd *scp, u8 priority);
 127 static void gdth_next(gdth_ha_str *ha);
 128 static int gdth_fill_raw_cmd(gdth_ha_str *ha, struct scsi_cmnd *scp, u8 b);
 129 static int gdth_special_cmd(gdth_ha_str *ha, struct scsi_cmnd *scp);
 130 static gdth_evt_str *gdth_store_event(gdth_ha_str *ha, u16 source,
 131                                       u16 idx, gdth_evt_data *evt);
 132 static int gdth_read_event(gdth_ha_str *ha, int handle, gdth_evt_str *estr);
 133 static void gdth_readapp_event(gdth_ha_str *ha, u8 application,
 134                                gdth_evt_str *estr);
 135 static void gdth_clear_events(void);
 136
 137 static void gdth_copy_internal_data(gdth_ha_str *ha, struct scsi_cmnd *scp,
 138                                     char *buffer, u16 count);
 139 static int gdth_internal_cache_cmd(gdth_ha_str *ha, struct scsi_cmnd *scp);
 140 static int gdth_fill_cache_cmd(gdth_ha_str *ha, struct scsi_cmnd *scp,
 141                                u16 hdrive);
 142
 143 static void gdth_enable_int(gdth_ha_str *ha);
 144 static int gdth_test_busy(gdth_ha_str *ha);
 145 static int gdth_get_cmd_index(gdth_ha_str *ha);
 146 static void gdth_release_event(gdth_ha_str *ha);
 147 static int gdth_wait(gdth_ha_str *ha, int index,u32 time);
 148 static int gdth_internal_cmd(gdth_ha_str *ha, u8 service, u16 opcode,
 149                                              u32 p1, u64 p2,u64 p3);
 150 static int gdth_search_drives(gdth_ha_str *ha);
 151 static int gdth_analyse_hdrive(gdth_ha_str *ha, u16 hdrive);
 152
 153 static const char *gdth_ctr_name(gdth_ha_str *ha);
 154
 155 static int gdth_open(struct inode *inode, struct file *filep);
 156 static int gdth_close(struct inode *inode, struct file *filep);
 157 static long gdth_unlocked_ioctl(struct file *filep, unsigned int cmd,
 158                                 unsigned long arg);
 159
 160 static void gdth_flush(gdth_ha_str *ha);
 161 static int gdth_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd);
 162 static int __gdth_queuecommand(gdth_ha_str *ha, struct scsi_cmnd *scp,
 163                                 struct gdth_cmndinfo *cmndinfo);
 164 static void gdth_scsi_done(struct scsi_cmnd *scp);
 165
 166 #ifdef DEBUG_GDTH
 167 static u8   DebugState = DEBUG_GDTH;
 168 #define TRACE(a)    {if (DebugState==1) {printk a;}}
 169 #define TRACE2(a)   {if (DebugState==1 || DebugState==2) {printk a;}}
 170 #define TRACE3(a)   {if (DebugState!=0) {printk a;}}
 171 #else /* !DEBUG */
 172 #define TRACE(a)
 173 #define TRACE2(a)
 174 #define TRACE3(a)
 175 #endif
 176
 177 #ifdef GDTH_STATISTICS
 178 static u32 max_rq=0, max_index=0, max_sg=0;
 179 static u32 act_ints=0, act_ios=0, act_stats=0, act_rq=0;
 180 static struct timer_list gdth_timer;
 181 #endif
 182
 183 #define PTR2USHORT(a)   (u16)(unsigned long)(a)
 184 #define GDTOFFSOF(a,b)  (size_t)&(((a*)0)->b)
 185 #define INDEX_OK(i,t)   ((i)<ARRAY_SIZE(t))
 186
 187 #define BUS_L2P(a,b)    ((b)>(a)->virt_bus ? (b-1):(b))
 188
 189 static u8   gdth_polling;                           /* polling if TRUE */
 190 static int      gdth_ctr_count  = 0;                    /* controller count */
 191 static LIST_HEAD(gdth_instances);                       /* controller list */
 192 static u8   gdth_write_through = FALSE;             /* write through */
 193 static gdth_evt_str ebuffer[MAX_EVENTS];                /* event buffer */
 194 static int elastidx;
 195 static int eoldidx;
 196 static int major;
 197
 198 #define DIN     1                               /* IN data direction */
 199 #define DOU     2                               /* OUT data direction */
 200 #define DNO     DIN                             /* no data transfer */
 201 #define DUN     DIN                             /* unknown data direction */
 202 static u8 gdth_direction_tab[0x100] = {
 203     DNO,DNO,DIN,DIN,DOU,DIN,DIN,DOU,DIN,DUN,DOU,DOU,DUN,DUN,DUN,DIN,
 204     DNO,DIN,DIN,DOU,DIN,DOU,DNO,DNO,DOU,DNO,DIN,DNO,DIN,DOU,DNO,DUN,
 205     DIN,DUN,DIN,DUN,DOU,DIN,DUN,DUN,DIN,DIN,DOU,DNO,DUN,DIN,DOU,DOU,
 206     DOU,DOU,DOU,DNO,DIN,DNO,DNO,DIN,DOU,DOU,DOU,DOU,DIN,DOU,DIN,DOU,
 207     DOU,DOU,DIN,DIN,DIN,DNO,DUN,DNO,DNO,DNO,DUN,DNO,DOU,DIN,DUN,DUN,
 208     DUN,DUN,DUN,DUN,DUN,DOU,DUN,DUN,DUN,DUN,DIN,DUN,DUN,DUN,DUN,DUN,
 209     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
 210     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
 211     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DIN,DUN,DOU,DUN,DUN,DUN,DUN,DUN,
 212     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DIN,DUN,
 213     DUN,DUN,DUN,DUN,DUN,DNO,DNO,DUN,DIN,DNO,DOU,DUN,DNO,DUN,DOU,DOU,
 214     DOU,DOU,DOU,DNO,DUN,DIN,DOU,DIN,DIN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
 215     DUN,DUN,DOU,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
 216     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
 217     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DOU,DUN,DUN,DUN,DUN,DUN,
 218     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN
 219 };
 220
 221 /* LILO and modprobe/insmod parameters */
 222 /* disable driver flag */
 223 static int disable __initdata = 0;
 224 /* reserve flag */
 225 static int reserve_mode = 1;
 226 /* reserve list */
 227 static int reserve_list[MAX_RES_ARGS] =
 228 {0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
 229  0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
 230  0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};
 231 /* scan order for PCI controllers */
 232 static int reverse_scan = 0;
 233 /* virtual channel for the host drives */
 234 static int hdr_channel = 0;
 235 /* max. IDs per channel */
 236 static int max_ids = MAXID;
 237 /* rescan all IDs */
 238 static int rescan = 0;
 239 /* shared access */
 240 static int shared_access = 1;
 241 /* 64 bit DMA mode, support for drives > 2 TB, if force_dma32 = 0 */
 242 static int force_dma32 = 0;
 243
 244 /* parameters for modprobe/insmod */
 245 module_param(disable, int, 0);
 246 module_param(reserve_mode, int, 0);
 247 module_param_array(reserve_list, int, NULL, 0);
 248 module_param(reverse_scan, int, 0);
 249 module_param(hdr_channel, int, 0);
 250 module_param(max_ids, int, 0);
 251 module_param(rescan, int, 0);
 252 module_param(shared_access, int, 0);
 253 module_param(force_dma32, int, 0);
 254 MODULE_AUTHOR("Achim Leubner");
 255 MODULE_LICENSE("GPL");
 256
 257 /* ioctl interface */
 258 static const struct file_operations gdth_fops = {
 259     .unlocked_ioctl   = gdth_unlocked_ioctl,
 260     .open    = gdth_open,
 261     .release = gdth_close,
 262     .llseek = noop_llseek,
 263 };
 264
 265 #include "gdth_proc.h"
 266 #include "gdth_proc.c"
 267
 268 static gdth_ha_str *gdth_find_ha(int hanum)
 269 {
 270         gdth_ha_str *ha;
 271
 272         list_for_each_entry(ha, &gdth_instances, list)
 273                 if (hanum == ha->hanum)
 274                         return ha;
 275
 276         return NULL;
 277 }
 278
 279 static struct gdth_cmndinfo *gdth_get_cmndinfo(gdth_ha_str *ha)
 280 {
 281         struct gdth_cmndinfo *priv = NULL;
 282         unsigned long flags;
 283         int i;
 284
 285         spin_lock_irqsave(&ha->smp_lock, flags);
 286
 287         for (i=0; i<GDTH_MAXCMDS; ++i) {
 288                 if (ha->cmndinfo[i].index == 0) {
 289                         priv = &ha->cmndinfo[i];
 290                         memset(priv, 0, sizeof(*priv));
 291                         priv->index = i+1;
 292                         break;
 293                 }
 294         }
 295
 296         spin_unlock_irqrestore(&ha->smp_lock, flags);
 297
 298         return priv;
 299 }
 300
 301 static void gdth_put_cmndinfo(struct gdth_cmndinfo *priv)
 302 {
 303         BUG_ON(!priv);
 304         priv->index = 0;
 305 }
 306
 307 static void gdth_delay(int milliseconds)
 308 {
 309     if (milliseconds == 0) {
 310         udelay(1);
 311     } else {
 312         mdelay(milliseconds);
 313     }
 314 }
 315
 316 static void gdth_scsi_done(struct scsi_cmnd *scp)
 317 {
 318         struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
 319         int internal_command = cmndinfo->internal_command;
 320
 321         TRACE2(("gdth_scsi_done()\n"));
 322
 323         gdth_put_cmndinfo(cmndinfo);
 324         scp->host_scribble = NULL;
 325
 326         if (internal_command)
 327                 complete((struct completion *)scp->request);
 328         else
 329                 scp->scsi_done(scp);
 330 }
 331
 332 static int __gdth_execute(struct scsi_device *sdev, gdth_cmd_str *gdtcmd,
 333                           char *cmnd, int timeout, u32 *info)
 334 {
 335     gdth_ha_str *ha = shost_priv(sdev->host);
 336     struct scsi_cmnd *scp;
 337     struct gdth_cmndinfo cmndinfo;
 338     DECLARE_COMPLETION_ONSTACK(wait);
 339     int rval;
 340
 341     scp = kzalloc(sizeof(*scp), GFP_KERNEL);
 342     if (!scp)
 343         return -ENOMEM;
 344
 345     scp->sense_buffer = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
 346     if (!scp->sense_buffer) {
 347         kfree(scp);
 348         return -ENOMEM;
 349     }
 350
 351     scp->device = sdev;
 352     memset(&cmndinfo, 0, sizeof(cmndinfo));
 353
 354     /* use request field to save the ptr. to completion struct. */
 355     scp->request = (struct request *)&wait;
 356     scp->cmd_len = 12;
 357     scp->cmnd = cmnd;
 358     cmndinfo.priority = IOCTL_PRI;
 359     cmndinfo.internal_cmd_str = gdtcmd;
 360     cmndinfo.internal_command = 1;
 361
 362     TRACE(("__gdth_execute() cmd 0x%x\n", scp->cmnd[0]));
 363     __gdth_queuecommand(ha, scp, &cmndinfo);
 364
 365     wait_for_completion(&wait);
 366
 367     rval = cmndinfo.status;
 368     if (info)
 369         *info = cmndinfo.info;
 370     kfree(scp->sense_buffer);
 371     kfree(scp);
 372     return rval;
 373 }
 374
 375 int gdth_execute(struct Scsi_Host *shost, gdth_cmd_str *gdtcmd, char *cmnd,
 376                  int timeout, u32 *info)
 377 {
 378     struct scsi_device *sdev = scsi_get_host_dev(shost);
 379     int rval = __gdth_execute(sdev, gdtcmd, cmnd, timeout, info);
 380
 381     scsi_free_host_dev(sdev);
 382     return rval;
 383 }
 384
 385 static void gdth_eval_mapping(u32 size, u32 *cyls, int *heads, int *secs)
 386 {
 387     *cyls = size /HEADS/SECS;
 388     if (*cyls <= MAXCYLS) {
 389         *heads = HEADS;
 390         *secs = SECS;
 391     } else {                                        /* too high for 64*32 */
 392         *cyls = size /MEDHEADS/MEDSECS;
 393         if (*cyls <= MAXCYLS) {
 394             *heads = MEDHEADS;
 395             *secs = MEDSECS;
 396         } else {                                    /* too high for 127*63 */
 397             *cyls = size /BIGHEADS/BIGSECS;
 398             *heads = BIGHEADS;
 399             *secs = BIGSECS;
 400         }
 401     }
 402 }
 403
 404 static bool gdth_search_vortex(u16 device)
 405 {
 406         if (device <= PCI_DEVICE_ID_VORTEX_GDT6555)
 407                 return true;
 408         if (device >= PCI_DEVICE_ID_VORTEX_GDT6x17RP &&
 409             device <= PCI_DEVICE_ID_VORTEX_GDTMAXRP)
 410                 return true;
 411         if (device == PCI_DEVICE_ID_VORTEX_GDTNEWRX ||
 412             device == PCI_DEVICE_ID_VORTEX_GDTNEWRX2)
 413                 return true;
 414         return false;
 415 }
 416
 417 static int gdth_pci_probe_one(gdth_pci_str *pcistr, gdth_ha_str **ha_out);
 418 static int gdth_pci_init_one(struct pci_dev *pdev,
 419                              const struct pci_device_id *ent);
 420 static void gdth_pci_remove_one(struct pci_dev *pdev);
 421 static void gdth_remove_one(gdth_ha_str *ha);
 422
 423 /* Vortex only makes RAID controllers.
 424  * We do not really want to specify all 550 ids here, so wildcard match.
 425  */
 426 static const struct pci_device_id gdthtable[] = {
 427         { PCI_VDEVICE(VORTEX, PCI_ANY_ID) },
 428         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_SRC) },
 429         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_SRC_XSCALE) },
 430         { }     /* terminate list */
 431 };
 432 MODULE_DEVICE_TABLE(pci, gdthtable);
 433
 434 static struct pci_driver gdth_pci_driver = {
 435         .name           = "gdth",
 436         .id_table       = gdthtable,
 437         .probe          = gdth_pci_init_one,
 438         .remove         = gdth_pci_remove_one,
 439 };
 440
 441 static void gdth_pci_remove_one(struct pci_dev *pdev)
 442 {
 443         gdth_ha_str *ha = pci_get_drvdata(pdev);
 444
 445         list_del(&ha->list);
 446         gdth_remove_one(ha);
 447
 448         pci_disable_device(pdev);
 449 }
 450
 451 static int gdth_pci_init_one(struct pci_dev *pdev,
 452                              const struct pci_device_id *ent)
 453 {
 454         u16 vendor = pdev->vendor;
 455         u16 device = pdev->device;
 456         unsigned long base0, base1, base2;
 457         int rc;
 458         gdth_pci_str gdth_pcistr;
 459         gdth_ha_str *ha = NULL;
 460
 461         TRACE(("gdth_search_dev() cnt %d vendor %x device %x\n",
 462                gdth_ctr_count, vendor, device));
 463
 464         memset(&gdth_pcistr, 0, sizeof(gdth_pcistr));
 465
 466         if (vendor == PCI_VENDOR_ID_VORTEX && !gdth_search_vortex(device))
 467                 return -ENODEV;
 468
 469         rc = pci_enable_device(pdev);
 470         if (rc)
 471                 return rc;
 472
 473         if (gdth_ctr_count >= MAXHA)
 474                 return -EBUSY;
 475
 476         /* GDT PCI controller found, resources are already in pdev */
 477         gdth_pcistr.pdev = pdev;
 478         base0 = pci_resource_flags(pdev, 0);
 479         base1 = pci_resource_flags(pdev, 1);
 480         base2 = pci_resource_flags(pdev, 2);
 481         if (device <= PCI_DEVICE_ID_VORTEX_GDT6000B ||   /* GDT6000/B */
 482             device >= PCI_DEVICE_ID_VORTEX_GDT6x17RP) {  /* MPR */
 483             if (!(base0 & IORESOURCE_MEM))
 484                 return -ENODEV;
 485             gdth_pcistr.dpmem = pci_resource_start(pdev, 0);
 486         } else {                                  /* GDT6110, GDT6120, .. */
 487             if (!(base0 & IORESOURCE_MEM) ||
 488                 !(base2 & IORESOURCE_MEM) ||
 489                 !(base1 & IORESOURCE_IO))
 490                 return -ENODEV;
 491             gdth_pcistr.dpmem = pci_resource_start(pdev, 2);
 492             gdth_pcistr.io    = pci_resource_start(pdev, 1);
 493         }
 494         TRACE2(("Controller found at %d/%d, irq %d, dpmem 0x%lx\n",
 495                 gdth_pcistr.pdev->bus->number,
 496                 PCI_SLOT(gdth_pcistr.pdev->devfn),
 497                 gdth_pcistr.irq,
 498                 gdth_pcistr.dpmem));
 499
 500         rc = gdth_pci_probe_one(&gdth_pcistr, &ha);
 501         if (rc)
 502                 return rc;
 503
 504         return 0;
 505 }
 506
 507 static int gdth_init_pci(struct pci_dev *pdev, gdth_pci_str *pcistr,
 508                          gdth_ha_str *ha)
 509 {
 510     register gdt6_dpram_str __iomem *dp6_ptr;
 511     register gdt6c_dpram_str __iomem *dp6c_ptr;
 512     register gdt6m_dpram_str __iomem *dp6m_ptr;
 513     u32 retries;
 514     u8 prot_ver;
 515     u16 command;
 516     int i, found = FALSE;
 517
 518     TRACE(("gdth_init_pci()\n"));
 519
 520     if (pdev->vendor == PCI_VENDOR_ID_INTEL)
 521         ha->oem_id = OEM_ID_INTEL;
 522     else
 523         ha->oem_id = OEM_ID_ICP;
 524     ha->brd_phys = (pdev->bus->number << 8) | (pdev->devfn & 0xf8);
 525     ha->stype = (u32)pdev->device;
 526     ha->irq = pdev->irq;
 527     ha->pdev = pdev;
 528
 529     if (ha->pdev->device <= PCI_DEVICE_ID_VORTEX_GDT6000B) {  /* GDT6000/B */
 530         TRACE2(("init_pci() dpmem %lx irq %d\n",pcistr->dpmem,ha->irq));
 531         ha->brd = ioremap(pcistr->dpmem, sizeof(gdt6_dpram_str));
 532         if (ha->brd == NULL) {
 533             printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
 534             return 0;
 535         }
 536         /* check and reset interface area */
 537         dp6_ptr = ha->brd;
 538         writel(DPMEM_MAGIC, &dp6_ptr->u);
 539         if (readl(&dp6_ptr->u) != DPMEM_MAGIC) {
 540             printk("GDT-PCI: Cannot access DPMEM at 0x%lx (shadowed?)\n",
 541                    pcistr->dpmem);
 542             found = FALSE;
 543             for (i = 0xC8000; i < 0xE8000; i += 0x4000) {
 544                 iounmap(ha->brd);
 545                 ha->brd = ioremap(i, sizeof(u16));
 546                 if (ha->brd == NULL) {
 547                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
 548                     return 0;
 549                 }
 550                 if (readw(ha->brd) != 0xffff) {
 551                     TRACE2(("init_pci_old() address 0x%x busy\n", i));
 552                     continue;
 553                 }
 554                 iounmap(ha->brd);
 555                 pci_write_config_dword(pdev, PCI_BASE_ADDRESS_0, i);
 556                 ha->brd = ioremap(i, sizeof(gdt6_dpram_str));
 557                 if (ha->brd == NULL) {
 558                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
 559                     return 0;
 560                 }
 561                 dp6_ptr = ha->brd;
 562                 writel(DPMEM_MAGIC, &dp6_ptr->u);
 563                 if (readl(&dp6_ptr->u) == DPMEM_MAGIC) {
 564                     printk("GDT-PCI: Use free address at 0x%x\n", i);
 565                     found = TRUE;
 566                     break;
 567                 }
 568             }
 569             if (!found) {
 570                 printk("GDT-PCI: No free address found!\n");
 571                 iounmap(ha->brd);
 572                 return 0;
 573             }
 574         }
 575         memset_io(&dp6_ptr->u, 0, sizeof(dp6_ptr->u));
 576         if (readl(&dp6_ptr->u) != 0) {
 577             printk("GDT-PCI: Initialization error (DPMEM write error)\n");
 578             iounmap(ha->brd);
 579             return 0;
 580         }
 581
 582         /* disable board interrupts, deinit services */
 583         writeb(0xff, &dp6_ptr->io.irqdel);
 584         writeb(0x00, &dp6_ptr->io.irqen);
 585         writeb(0x00, &dp6_ptr->u.ic.S_Status);
 586         writeb(0x00, &dp6_ptr->u.ic.Cmd_Index);
 587
 588         writel(pcistr->dpmem, &dp6_ptr->u.ic.S_Info[0]);
 589         writeb(0xff, &dp6_ptr->u.ic.S_Cmd_Indx);
 590         writeb(0, &dp6_ptr->io.event);
 591         retries = INIT_RETRIES;
 592         gdth_delay(20);
 593         while (readb(&dp6_ptr->u.ic.S_Status) != 0xff) {
 594             if (--retries == 0) {
 595                 printk("GDT-PCI: Initialization error (DEINIT failed)\n");
 596                 iounmap(ha->brd);
 597                 return 0;
 598             }
 599             gdth_delay(1);
 600         }
 601         prot_ver = (u8)readl(&dp6_ptr->u.ic.S_Info[0]);
 602         writeb(0, &dp6_ptr->u.ic.S_Status);
 603         writeb(0xff, &dp6_ptr->io.irqdel);
 604         if (prot_ver != PROTOCOL_VERSION) {
 605             printk("GDT-PCI: Illegal protocol version\n");
 606             iounmap(ha->brd);
 607             return 0;
 608         }
 609
 610         ha->type = GDT_PCI;
 611         ha->ic_all_size = sizeof(dp6_ptr->u);
 612
 613         /* special command to controller BIOS */
 614         writel(0x00, &dp6_ptr->u.ic.S_Info[0]);
 615         writel(0x00, &dp6_ptr->u.ic.S_Info[1]);
 616         writel(0x00, &dp6_ptr->u.ic.S_Info[2]);
 617         writel(0x00, &dp6_ptr->u.ic.S_Info[3]);
 618         writeb(0xfe, &dp6_ptr->u.ic.S_Cmd_Indx);
 619         writeb(0, &dp6_ptr->io.event);
 620         retries = INIT_RETRIES;
 621         gdth_delay(20);
 622         while (readb(&dp6_ptr->u.ic.S_Status) != 0xfe) {
 623             if (--retries == 0) {
 624                 printk("GDT-PCI: Initialization error\n");
 625                 iounmap(ha->brd);
 626                 return 0;
 627             }
 628             gdth_delay(1);
 629         }
 630         writeb(0, &dp6_ptr->u.ic.S_Status);
 631         writeb(0xff, &dp6_ptr->io.irqdel);
 632
 633         ha->dma64_support = 0;
 634
 635     } else if (ha->pdev->device <= PCI_DEVICE_ID_VORTEX_GDT6555) { /* GDT6110, ... */
 636         ha->plx = (gdt6c_plx_regs *)pcistr->io;
 637         TRACE2(("init_pci_new() dpmem %lx irq %d\n",
 638             pcistr->dpmem,ha->irq));
 639         ha->brd = ioremap(pcistr->dpmem, sizeof(gdt6c_dpram_str));
 640         if (ha->brd == NULL) {
 641             printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
 642             iounmap(ha->brd);
 643             return 0;
 644         }
 645         /* check and reset interface area */
 646         dp6c_ptr = ha->brd;
 647         writel(DPMEM_MAGIC, &dp6c_ptr->u);
 648         if (readl(&dp6c_ptr->u) != DPMEM_MAGIC) {
 649             printk("GDT-PCI: Cannot access DPMEM at 0x%lx (shadowed?)\n",
 650                    pcistr->dpmem);
 651             found = FALSE;
 652             for (i = 0xC8000; i < 0xE8000; i += 0x4000) {
 653                 iounmap(ha->brd);
 654                 ha->brd = ioremap(i, sizeof(u16));
 655                 if (ha->brd == NULL) {
 656                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
 657                     return 0;
 658                 }
 659                 if (readw(ha->brd) != 0xffff) {
 660                     TRACE2(("init_pci_plx() address 0x%x busy\n", i));
 661                     continue;
 662                 }
 663                 iounmap(ha->brd);
 664                 pci_write_config_dword(pdev, PCI_BASE_ADDRESS_2, i);
 665                 ha->brd = ioremap(i, sizeof(gdt6c_dpram_str));
 666                 if (ha->brd == NULL) {
 667                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
 668                     return 0;
 669                 }
 670                 dp6c_ptr = ha->brd;
 671                 writel(DPMEM_MAGIC, &dp6c_ptr->u);
 672                 if (readl(&dp6c_ptr->u) == DPMEM_MAGIC) {
 673                     printk("GDT-PCI: Use free address at 0x%x\n", i);
 674                     found = TRUE;
 675                     break;
 676                 }
 677             }
 678             if (!found) {
 679                 printk("GDT-PCI: No free address found!\n");
 680                 iounmap(ha->brd);
 681                 return 0;
 682             }
 683         }
 684         memset_io(&dp6c_ptr->u, 0, sizeof(dp6c_ptr->u));
 685         if (readl(&dp6c_ptr->u) != 0) {
 686             printk("GDT-PCI: Initialization error (DPMEM write error)\n");
 687             iounmap(ha->brd);
 688             return 0;
 689         }
 690
 691         /* disable board interrupts, deinit services */
 692         outb(0x00,PTR2USHORT(&ha->plx->control1));
 693         outb(0xff,PTR2USHORT(&ha->plx->edoor_reg));
 694
 695         writeb(0x00, &dp6c_ptr->u.ic.S_Status);
 696         writeb(0x00, &dp6c_ptr->u.ic.Cmd_Index);
 697
 698         writel(pcistr->dpmem, &dp6c_ptr->u.ic.S_Info[0]);
 699         writeb(0xff, &dp6c_ptr->u.ic.S_Cmd_Indx);
 700
 701         outb(1,PTR2USHORT(&ha->plx->ldoor_reg));
 702
 703         retries = INIT_RETRIES;
 704         gdth_delay(20);
 705         while (readb(&dp6c_ptr->u.ic.S_Status) != 0xff) {
 706             if (--retries == 0) {
 707                 printk("GDT-PCI: Initialization error (DEINIT failed)\n");
 708                 iounmap(ha->brd);
 709                 return 0;
 710             }
 711             gdth_delay(1);
 712         }
 713         prot_ver = (u8)readl(&dp6c_ptr->u.ic.S_Info[0]);
 714         writeb(0, &dp6c_ptr->u.ic.Status);
 715         if (prot_ver != PROTOCOL_VERSION) {
 716             printk("GDT-PCI: Illegal protocol version\n");
 717             iounmap(ha->brd);
 718             return 0;
 719         }
 720
 721         ha->type = GDT_PCINEW;
 722         ha->ic_all_size = sizeof(dp6c_ptr->u);
 723
 724         /* special command to controller BIOS */
 725         writel(0x00, &dp6c_ptr->u.ic.S_Info[0]);
 726         writel(0x00, &dp6c_ptr->u.ic.S_Info[1]);
 727         writel(0x00, &dp6c_ptr->u.ic.S_Info[2]);
 728         writel(0x00, &dp6c_ptr->u.ic.S_Info[3]);
 729         writeb(0xfe, &dp6c_ptr->u.ic.S_Cmd_Indx);
 730
 731         outb(1,PTR2USHORT(&ha->plx->ldoor_reg));
 732
 733         retries = INIT_RETRIES;
 734         gdth_delay(20);
 735         while (readb(&dp6c_ptr->u.ic.S_Status) != 0xfe) {
 736             if (--retries == 0) {
 737                 printk("GDT-PCI: Initialization error\n");
 738                 iounmap(ha->brd);
 739                 return 0;
 740             }
 741             gdth_delay(1);
 742         }
 743         writeb(0, &dp6c_ptr->u.ic.S_Status);
 744
 745         ha->dma64_support = 0;
 746
 747     } else {                                            /* MPR */
 748         TRACE2(("init_pci_mpr() dpmem %lx irq %d\n",pcistr->dpmem,ha->irq));
 749         ha->brd = ioremap(pcistr->dpmem, sizeof(gdt6m_dpram_str));
 750         if (ha->brd == NULL) {
 751             printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
 752             return 0;
 753         }
 754
 755         /* manipulate config. space to enable DPMEM, start RP controller */
 756         pci_read_config_word(pdev, PCI_COMMAND, &command);
 757         command |= 6;
 758         pci_write_config_word(pdev, PCI_COMMAND, command);
 759         gdth_delay(1);
 760
 761         dp6m_ptr = ha->brd;
 762
 763         /* Ensure that it is safe to access the non HW portions of DPMEM.
 764          * Aditional check needed for Xscale based RAID controllers */
 765         while( ((int)readb(&dp6m_ptr->i960r.sema0_reg) ) & 3 )
 766             gdth_delay(1);
 767
 768         /* check and reset interface area */
 769         writel(DPMEM_MAGIC, &dp6m_ptr->u);
 770         if (readl(&dp6m_ptr->u) != DPMEM_MAGIC) {
 771             printk("GDT-PCI: Cannot access DPMEM at 0x%lx (shadowed?)\n",
 772                    pcistr->dpmem);
 773             found = FALSE;
 774             for (i = 0xC8000; i < 0xE8000; i += 0x4000) {
 775                 iounmap(ha->brd);
 776                 ha->brd = ioremap(i, sizeof(u16));
 777                 if (ha->brd == NULL) {
 778                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
 779                     return 0;
 780                 }
 781                 if (readw(ha->brd) != 0xffff) {
 782                     TRACE2(("init_pci_mpr() address 0x%x busy\n", i));
 783                     continue;
 784                 }
 785                 iounmap(ha->brd);
 786                 pci_write_config_dword(pdev, PCI_BASE_ADDRESS_0, i);
 787                 ha->brd = ioremap(i, sizeof(gdt6m_dpram_str));
 788                 if (ha->brd == NULL) {
 789                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
 790                     return 0;
 791                 }
 792                 dp6m_ptr = ha->brd;
 793                 writel(DPMEM_MAGIC, &dp6m_ptr->u);
 794                 if (readl(&dp6m_ptr->u) == DPMEM_MAGIC) {
 795                     printk("GDT-PCI: Use free address at 0x%x\n", i);
 796                     found = TRUE;
 797                     break;
 798                 }
 799             }
 800             if (!found) {
 801                 printk("GDT-PCI: No free address found!\n");
 802                 iounmap(ha->brd);
 803                 return 0;
 804             }
 805         }
 806         memset_io(&dp6m_ptr->u, 0, sizeof(dp6m_ptr->u));
 807
 808         /* disable board interrupts, deinit services */
 809         writeb(readb(&dp6m_ptr->i960r.edoor_en_reg) | 4,
 810                     &dp6m_ptr->i960r.edoor_en_reg);
 811         writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
 812         writeb(0x00, &dp6m_ptr->u.ic.S_Status);
 813         writeb(0x00, &dp6m_ptr->u.ic.Cmd_Index);
 814
 815         writel(pcistr->dpmem, &dp6m_ptr->u.ic.S_Info[0]);
 816         writeb(0xff, &dp6m_ptr->u.ic.S_Cmd_Indx);
 817         writeb(1, &dp6m_ptr->i960r.ldoor_reg);
 818         retries = INIT_RETRIES;
 819         gdth_delay(20);
 820         while (readb(&dp6m_ptr->u.ic.S_Status) != 0xff) {
 821             if (--retries == 0) {
 822                 printk("GDT-PCI: Initialization error (DEINIT failed)\n");
 823                 iounmap(ha->brd);
 824                 return 0;
 825             }
 826             gdth_delay(1);
 827         }
 828         prot_ver = (u8)readl(&dp6m_ptr->u.ic.S_Info[0]);
 829         writeb(0, &dp6m_ptr->u.ic.S_Status);
 830         if (prot_ver != PROTOCOL_VERSION) {
 831             printk("GDT-PCI: Illegal protocol version\n");
 832             iounmap(ha->brd);
 833             return 0;
 834         }
 835
 836         ha->type = GDT_PCIMPR;
 837         ha->ic_all_size = sizeof(dp6m_ptr->u);
 838
 839         /* special command to controller BIOS */
 840         writel(0x00, &dp6m_ptr->u.ic.S_Info[0]);
 841         writel(0x00, &dp6m_ptr->u.ic.S_Info[1]);
 842         writel(0x00, &dp6m_ptr->u.ic.S_Info[2]);
 843         writel(0x00, &dp6m_ptr->u.ic.S_Info[3]);
 844         writeb(0xfe, &dp6m_ptr->u.ic.S_Cmd_Indx);
 845         writeb(1, &dp6m_ptr->i960r.ldoor_reg);
 846         retries = INIT_RETRIES;
 847         gdth_delay(20);
 848         while (readb(&dp6m_ptr->u.ic.S_Status) != 0xfe) {
 849             if (--retries == 0) {
 850                 printk("GDT-PCI: Initialization error\n");
 851                 iounmap(ha->brd);
 852                 return 0;
 853             }
 854             gdth_delay(1);
 855         }
 856         writeb(0, &dp6m_ptr->u.ic.S_Status);
 857
 858         /* read FW version to detect 64-bit DMA support */
 859         writeb(0xfd, &dp6m_ptr->u.ic.S_Cmd_Indx);
 860         writeb(1, &dp6m_ptr->i960r.ldoor_reg);
 861         retries = INIT_RETRIES;
 862         gdth_delay(20);
 863         while (readb(&dp6m_ptr->u.ic.S_Status) != 0xfd) {
 864             if (--retries == 0) {
 865                 printk("GDT-PCI: Initialization error (DEINIT failed)\n");
 866                 iounmap(ha->brd);
 867                 return 0;
 868             }
 869             gdth_delay(1);
 870         }
 871         prot_ver = (u8)(readl(&dp6m_ptr->u.ic.S_Info[0]) >> 16);
 872         writeb(0, &dp6m_ptr->u.ic.S_Status);
 873         if (prot_ver < 0x2b)      /* FW < x.43: no 64-bit DMA support */
 874             ha->dma64_support = 0;
 875         else
 876             ha->dma64_support = 1;
 877     }
 878
 879     return 1;
 880 }
 881
 882 /* controller protocol functions */
 883
 884 static void gdth_enable_int(gdth_ha_str *ha)
 885 {
 886     unsigned long flags;
 887     gdt6_dpram_str __iomem *dp6_ptr;
 888     gdt6m_dpram_str __iomem *dp6m_ptr;
 889
 890     TRACE(("gdth_enable_int() hanum %d\n",ha->hanum));
 891     spin_lock_irqsave(&ha->smp_lock, flags);
 892
 893     if (ha->type == GDT_PCI) {
 894         dp6_ptr = ha->brd;
 895         writeb(1, &dp6_ptr->io.irqdel);
 896         writeb(0, &dp6_ptr->u.ic.Cmd_Index);
 897         writeb(1, &dp6_ptr->io.irqen);
 898     } else if (ha->type == GDT_PCINEW) {
 899         outb(0xff, PTR2USHORT(&ha->plx->edoor_reg));
 900         outb(0x03, PTR2USHORT(&ha->plx->control1));
 901     } else if (ha->type == GDT_PCIMPR) {
 902         dp6m_ptr = ha->brd;
 903         writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
 904         writeb(readb(&dp6m_ptr->i960r.edoor_en_reg) & ~4,
 905                     &dp6m_ptr->i960r.edoor_en_reg);
 906     }
 907     spin_unlock_irqrestore(&ha->smp_lock, flags);
 908 }
 909
 910 /* return IStatus if interrupt was from this card else 0 */
 911 static u8 gdth_get_status(gdth_ha_str *ha)
 912 {
 913     u8 IStatus = 0;
 914
 915     TRACE(("gdth_get_status() irq %d ctr_count %d\n", ha->irq, gdth_ctr_count));
 916
 917         if (ha->type == GDT_PCI)
 918             IStatus =
 919                 readb(&((gdt6_dpram_str __iomem *)ha->brd)->u.ic.Cmd_Index);
 920         else if (ha->type == GDT_PCINEW)
 921             IStatus = inb(PTR2USHORT(&ha->plx->edoor_reg));
 922         else if (ha->type == GDT_PCIMPR)
 923             IStatus =
 924                 readb(&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.edoor_reg);
 925
 926         return IStatus;
 927 }
 928
 929 static int gdth_test_busy(gdth_ha_str *ha)
 930 {
 931     register int gdtsema0 = 0;
 932
 933     TRACE(("gdth_test_busy() hanum %d\n", ha->hanum));
 934
 935     if (ha->type == GDT_PCI)
 936         gdtsema0 = (int)readb(&((gdt6_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
 937     else if (ha->type == GDT_PCINEW)
 938         gdtsema0 = (int)inb(PTR2USHORT(&ha->plx->sema0_reg));
 939     else if (ha->type == GDT_PCIMPR)
 940         gdtsema0 =
 941             (int)readb(&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.sema0_reg);
 942
 943     return (gdtsema0 & 1);
 944 }
 945
 946
 947 static int gdth_get_cmd_index(gdth_ha_str *ha)
 948 {
 949     int i;
 950
 951     TRACE(("gdth_get_cmd_index() hanum %d\n", ha->hanum));
 952
 953     for (i=0; i<GDTH_MAXCMDS; ++i) {
 954         if (ha->cmd_tab[i].cmnd == UNUSED_CMND) {
 955             ha->cmd_tab[i].cmnd = ha->pccb->RequestBuffer;
 956             ha->cmd_tab[i].service = ha->pccb->Service;
 957             ha->pccb->CommandIndex = (u32)i+2;
 958             return (i+2);
 959         }
 960     }
 961     return 0;
 962 }
 963
 964
 965 static void gdth_set_sema0(gdth_ha_str *ha)
 966 {
 967     TRACE(("gdth_set_sema0() hanum %d\n", ha->hanum));
 968
 969     if (ha->type == GDT_PCI) {
 970         writeb(1, &((gdt6_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
 971     } else if (ha->type == GDT_PCINEW) {
 972         outb(1, PTR2USHORT(&ha->plx->sema0_reg));
 973     } else if (ha->type == GDT_PCIMPR) {
 974         writeb(1, &((gdt6m_dpram_str __iomem *)ha->brd)->i960r.sema0_reg);
 975     }
 976 }
 977
 978
 979 static void gdth_copy_command(gdth_ha_str *ha)
 980 {
 981     register gdth_cmd_str *cmd_ptr;
 982     register gdt6m_dpram_str __iomem *dp6m_ptr;
 983     register gdt6c_dpram_str __iomem *dp6c_ptr;
 984     gdt6_dpram_str __iomem *dp6_ptr;
 985     u16 cp_count,dp_offset,cmd_no;
 986
 987     TRACE(("gdth_copy_command() hanum %d\n", ha->hanum));
 988
 989     cp_count = ha->cmd_len;
 990     dp_offset= ha->cmd_offs_dpmem;
 991     cmd_no   = ha->cmd_cnt;
 992     cmd_ptr  = ha->pccb;
 993
 994     ++ha->cmd_cnt;
 995
 996     /* set cpcount dword aligned */
 997     if (cp_count & 3)
 998         cp_count += (4 - (cp_count & 3));
 999
1000     ha->cmd_offs_dpmem += cp_count;
1001
1002     /* set offset and service, copy command to DPMEM */
1003     if (ha->type == GDT_PCI) {
1004         dp6_ptr = ha->brd;
1005         writew(dp_offset + DPMEM_COMMAND_OFFSET,
1006                     &dp6_ptr->u.ic.comm_queue[cmd_no].offset);
1007         writew((u16)cmd_ptr->Service,
1008                     &dp6_ptr->u.ic.comm_queue[cmd_no].serv_id);
1009         memcpy_toio(&dp6_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
1010     } else if (ha->type == GDT_PCINEW) {
1011         dp6c_ptr = ha->brd;
1012         writew(dp_offset + DPMEM_COMMAND_OFFSET,
1013                     &dp6c_ptr->u.ic.comm_queue[cmd_no].offset);
1014         writew((u16)cmd_ptr->Service,
1015                     &dp6c_ptr->u.ic.comm_queue[cmd_no].serv_id);
1016         memcpy_toio(&dp6c_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
1017     } else if (ha->type == GDT_PCIMPR) {
1018         dp6m_ptr = ha->brd;
1019         writew(dp_offset + DPMEM_COMMAND_OFFSET,
1020                     &dp6m_ptr->u.ic.comm_queue[cmd_no].offset);
1021         writew((u16)cmd_ptr->Service,
1022                     &dp6m_ptr->u.ic.comm_queue[cmd_no].serv_id);
1023         memcpy_toio(&dp6m_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
1024     }
1025 }
1026
1027
1028 static void gdth_release_event(gdth_ha_str *ha)
1029 {
1030     TRACE(("gdth_release_event() hanum %d\n", ha->hanum));
1031
1032 #ifdef GDTH_STATISTICS
1033     {
1034         u32 i,j;
1035         for (i=0,j=0; j<GDTH_MAXCMDS; ++j) {
1036             if (ha->cmd_tab[j].cmnd != UNUSED_CMND)
1037                 ++i;
1038         }
1039         if (max_index < i) {
1040             max_index = i;
1041             TRACE3(("GDT: max_index = %d\n",(u16)i));
1042         }
1043     }
1044 #endif
1045
1046     if (ha->pccb->OpCode == GDT_INIT)
1047         ha->pccb->Service |= 0x80;
1048
1049     if (ha->type == GDT_PCI) {
1050         writeb(0, &((gdt6_dpram_str __iomem *)ha->brd)->io.event);
1051     } else if (ha->type == GDT_PCINEW) {
1052         outb(1, PTR2USHORT(&ha->plx->ldoor_reg));
1053     } else if (ha->type == GDT_PCIMPR) {
1054         writeb(1, &((gdt6m_dpram_str __iomem *)ha->brd)->i960r.ldoor_reg);
1055     }
1056 }
1057
1058 static int gdth_wait(gdth_ha_str *ha, int index, u32 time)
1059 {
1060     int answer_found = FALSE;
1061     int wait_index = 0;
1062
1063     TRACE(("gdth_wait() hanum %d index %d time %d\n", ha->hanum, index, time));
1064
1065     if (index == 0)
1066         return 1;                               /* no wait required */
1067
1068     do {
1069         __gdth_interrupt(ha, true, &wait_index);
1070         if (wait_index == index) {
1071             answer_found = TRUE;
1072             break;
1073         }
1074         gdth_delay(1);
1075     } while (--time);
1076
1077     while (gdth_test_busy(ha))
1078         gdth_delay(0);
1079
1080     return (answer_found);
1081 }
1082
1083
1084 static int gdth_internal_cmd(gdth_ha_str *ha, u8 service, u16 opcode,
1085                                             u32 p1, u64 p2, u64 p3)
1086 {
1087     register gdth_cmd_str *cmd_ptr;
1088     int retries,index;
1089
1090     TRACE2(("gdth_internal_cmd() service %d opcode %d\n",service,opcode));
1091
1092     cmd_ptr = ha->pccb;
1093     memset((char*)cmd_ptr,0,sizeof(gdth_cmd_str));
1094
1095     /* make command  */
1096     for (retries = INIT_RETRIES;;) {
1097         cmd_ptr->Service          = service;
1098         cmd_ptr->RequestBuffer    = INTERNAL_CMND;
1099         if (!(index=gdth_get_cmd_index(ha))) {
1100             TRACE(("GDT: No free command index found\n"));
1101             return 0;
1102         }
1103         gdth_set_sema0(ha);
1104         cmd_ptr->OpCode           = opcode;
1105         cmd_ptr->BoardNode        = LOCALBOARD;
1106         if (service == CACHESERVICE) {
1107             if (opcode == GDT_IOCTL) {
1108                 cmd_ptr->u.ioctl.subfunc = p1;
1109                 cmd_ptr->u.ioctl.channel = (u32)p2;
1110                 cmd_ptr->u.ioctl.param_size = (u16)p3;
1111                 cmd_ptr->u.ioctl.p_param = ha->scratch_phys;
1112             } else {
1113                 if (ha->cache_feat & GDT_64BIT) {
1114                     cmd_ptr->u.cache64.DeviceNo = (u16)p1;
1115                     cmd_ptr->u.cache64.BlockNo  = p2;
1116                 } else {
1117                     cmd_ptr->u.cache.DeviceNo = (u16)p1;
1118                     cmd_ptr->u.cache.BlockNo  = (u32)p2;
1119                 }
1120             }
1121         } else if (service == SCSIRAWSERVICE) {
1122             if (ha->raw_feat & GDT_64BIT) {
1123                 cmd_ptr->u.raw64.direction  = p1;
1124                 cmd_ptr->u.raw64.bus        = (u8)p2;
1125                 cmd_ptr->u.raw64.target     = (u8)p3;
1126                 cmd_ptr->u.raw64.lun        = (u8)(p3 >> 8);
1127             } else {
1128                 cmd_ptr->u.raw.direction  = p1;
1129                 cmd_ptr->u.raw.bus        = (u8)p2;
1130                 cmd_ptr->u.raw.target     = (u8)p3;
1131                 cmd_ptr->u.raw.lun        = (u8)(p3 >> 8);
1132             }
1133         } else if (service == SCREENSERVICE) {
1134             if (opcode == GDT_REALTIME) {
1135                 *(u32 *)&cmd_ptr->u.screen.su.data[0] = p1;
1136                 *(u32 *)&cmd_ptr->u.screen.su.data[4] = (u32)p2;
1137                 *(u32 *)&cmd_ptr->u.screen.su.data[8] = (u32)p3;
1138             }
1139         }
1140         ha->cmd_len          = sizeof(gdth_cmd_str);
1141         ha->cmd_offs_dpmem   = 0;
1142         ha->cmd_cnt          = 0;
1143         gdth_copy_command(ha);
1144         gdth_release_event(ha);
1145         gdth_delay(20);
1146         if (!gdth_wait(ha, index, INIT_TIMEOUT)) {
1147             printk("GDT: Initialization error (timeout service %d)\n",service);
1148             return 0;
1149         }
1150         if (ha->status != S_BSY || --retries == 0)
1151             break;
1152         gdth_delay(1);
1153     }
1154
1155     return (ha->status != S_OK ? 0:1);
1156 }
1157
1158
1159 /* search for devices */
1160
1161 static int gdth_search_drives(gdth_ha_str *ha)
1162 {
1163     u16 cdev_cnt, i;
1164     int ok;
1165     u32 bus_no, drv_cnt, drv_no, j;
1166     gdth_getch_str *chn;
1167     gdth_drlist_str *drl;
1168     gdth_iochan_str *ioc;
1169     gdth_raw_iochan_str *iocr;
1170     gdth_arcdl_str *alst;
1171     gdth_alist_str *alst2;
1172     gdth_oem_str_ioctl *oemstr;
1173
1174     TRACE(("gdth_search_drives() hanum %d\n", ha->hanum));
1175     ok = 0;
1176
1177     /* initialize controller services, at first: screen service */
1178     ha->screen_feat = 0;
1179     if (!force_dma32) {
1180         ok = gdth_internal_cmd(ha, SCREENSERVICE, GDT_X_INIT_SCR, 0, 0, 0);
1181         if (ok)
1182             ha->screen_feat = GDT_64BIT;
1183     }
1184     if (force_dma32 || (!ok && ha->status == (u16)S_NOFUNC))
1185         ok = gdth_internal_cmd(ha, SCREENSERVICE, GDT_INIT, 0, 0, 0);
1186     if (!ok) {
1187         printk("GDT-HA %d: Initialization error screen service (code %d)\n",
1188                ha->hanum, ha->status);
1189         return 0;
1190     }
1191     TRACE2(("gdth_search_drives(): SCREENSERVICE initialized\n"));
1192
1193     /* unfreeze all IOs */
1194     gdth_internal_cmd(ha, CACHESERVICE, GDT_UNFREEZE_IO, 0, 0, 0);
1195
1196     /* initialize cache service */
1197     ha->cache_feat = 0;
1198     if (!force_dma32) {
1199         ok = gdth_internal_cmd(ha, CACHESERVICE, GDT_X_INIT_HOST, LINUX_OS,
1200                                                                          0, 0);
1201         if (ok)
1202             ha->cache_feat = GDT_64BIT;
1203     }
1204     if (force_dma32 || (!ok && ha->status == (u16)S_NOFUNC))
1205         ok = gdth_internal_cmd(ha, CACHESERVICE, GDT_INIT, LINUX_OS, 0, 0);
1206     if (!ok) {
1207         printk("GDT-HA %d: Initialization error cache service (code %d)\n",
1208                ha->hanum, ha->status);
1209         return 0;
1210     }
1211     TRACE2(("gdth_search_drives(): CACHESERVICE initialized\n"));
1212     cdev_cnt = (u16)ha->info;
1213     ha->fw_vers = ha->service;
1214
1215     /* detect number of buses - try new IOCTL */
1216     iocr = (gdth_raw_iochan_str *)ha->pscratch;
1217     iocr->hdr.version        = 0xffffffff;
1218     iocr->hdr.list_entries   = MAXBUS;
1219     iocr->hdr.first_chan     = 0;
1220     iocr->hdr.last_chan      = MAXBUS-1;
1221     iocr->hdr.list_offset    = GDTOFFSOF(gdth_raw_iochan_str, list[0]);
1222     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, IOCHAN_RAW_DESC,
1223                           INVALID_CHANNEL,sizeof(gdth_raw_iochan_str))) {
1224         TRACE2(("IOCHAN_RAW_DESC supported!\n"));
1225         ha->bus_cnt = iocr->hdr.chan_count;
1226         for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
1227             if (iocr->list[bus_no].proc_id < MAXID)
1228                 ha->bus_id[bus_no] = iocr->list[bus_no].proc_id;
1229             else
1230                 ha->bus_id[bus_no] = 0xff;
1231         }
1232     } else {
1233         /* old method */
1234         chn = (gdth_getch_str *)ha->pscratch;
1235         for (bus_no = 0; bus_no < MAXBUS; ++bus_no) {
1236             chn->channel_no = bus_no;
1237             if (!gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1238                                    SCSI_CHAN_CNT | L_CTRL_PATTERN,
1239                                    IO_CHANNEL | INVALID_CHANNEL,
1240                                    sizeof(gdth_getch_str))) {
1241                 if (bus_no == 0) {
1242                     printk("GDT-HA %d: Error detecting channel count (0x%x)\n",
1243                            ha->hanum, ha->status);
1244                     return 0;
1245                 }
1246                 break;
1247             }
1248             if (chn->siop_id < MAXID)
1249                 ha->bus_id[bus_no] = chn->siop_id;
1250             else
1251                 ha->bus_id[bus_no] = 0xff;
1252         }
1253         ha->bus_cnt = (u8)bus_no;
1254     }
1255     TRACE2(("gdth_search_drives() %d channels\n",ha->bus_cnt));
1256
1257     /* read cache configuration */
1258     if (!gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, CACHE_INFO,
1259                            INVALID_CHANNEL,sizeof(gdth_cinfo_str))) {
1260         printk("GDT-HA %d: Initialization error cache service (code %d)\n",
1261                ha->hanum, ha->status);
1262         return 0;
1263     }
1264     ha->cpar = ((gdth_cinfo_str *)ha->pscratch)->cpar;
1265     TRACE2(("gdth_search_drives() cinfo: vs %x sta %d str %d dw %d b %d\n",
1266             ha->cpar.version,ha->cpar.state,ha->cpar.strategy,
1267             ha->cpar.write_back,ha->cpar.block_size));
1268
1269     /* read board info and features */
1270     ha->more_proc = FALSE;
1271     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, BOARD_INFO,
1272                           INVALID_CHANNEL,sizeof(gdth_binfo_str))) {
1273         memcpy(&ha->binfo, (gdth_binfo_str *)ha->pscratch,
1274                sizeof(gdth_binfo_str));
1275         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, BOARD_FEATURES,
1276                               INVALID_CHANNEL,sizeof(gdth_bfeat_str))) {
1277             TRACE2(("BOARD_INFO/BOARD_FEATURES supported\n"));
1278             ha->bfeat = *(gdth_bfeat_str *)ha->pscratch;
1279             ha->more_proc = TRUE;
1280         }
1281     } else {
1282         TRACE2(("BOARD_INFO requires firmware >= 1.10/2.08\n"));
1283         strcpy(ha->binfo.type_string, gdth_ctr_name(ha));
1284     }
1285     TRACE2(("Controller name: %s\n",ha->binfo.type_string));
1286
1287     /* read more informations */
1288     if (ha->more_proc) {
1289         /* physical drives, channel addresses */
1290         ioc = (gdth_iochan_str *)ha->pscratch;
1291         ioc->hdr.version        = 0xffffffff;
1292         ioc->hdr.list_entries   = MAXBUS;
1293         ioc->hdr.first_chan     = 0;
1294         ioc->hdr.last_chan      = MAXBUS-1;
1295         ioc->hdr.list_offset    = GDTOFFSOF(gdth_iochan_str, list[0]);
1296         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, IOCHAN_DESC,
1297                               INVALID_CHANNEL,sizeof(gdth_iochan_str))) {
1298             for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
1299                 ha->raw[bus_no].address = ioc->list[bus_no].address;
1300                 ha->raw[bus_no].local_no = ioc->list[bus_no].local_no;
1301             }
1302         } else {
1303             for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
1304                 ha->raw[bus_no].address = IO_CHANNEL;
1305                 ha->raw[bus_no].local_no = bus_no;
1306             }
1307         }
1308         for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
1309             chn = (gdth_getch_str *)ha->pscratch;
1310             chn->channel_no = ha->raw[bus_no].local_no;
1311             if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1312                                   SCSI_CHAN_CNT | L_CTRL_PATTERN,
1313                                   ha->raw[bus_no].address | INVALID_CHANNEL,
1314                                   sizeof(gdth_getch_str))) {
1315                 ha->raw[bus_no].pdev_cnt = chn->drive_cnt;
1316                 TRACE2(("Channel %d: %d phys. drives\n",
1317                         bus_no,chn->drive_cnt));
1318             }
1319             if (ha->raw[bus_no].pdev_cnt > 0) {
1320                 drl = (gdth_drlist_str *)ha->pscratch;
1321                 drl->sc_no = ha->raw[bus_no].local_no;
1322                 drl->sc_cnt = ha->raw[bus_no].pdev_cnt;
1323                 if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1324                                       SCSI_DR_LIST | L_CTRL_PATTERN,
1325                                       ha->raw[bus_no].address | INVALID_CHANNEL,
1326                                       sizeof(gdth_drlist_str))) {
1327                     for (j = 0; j < ha->raw[bus_no].pdev_cnt; ++j)
1328                         ha->raw[bus_no].id_list[j] = drl->sc_list[j];
1329                 } else {
1330                     ha->raw[bus_no].pdev_cnt = 0;
1331                 }
1332             }
1333         }
1334
1335         /* logical drives */
1336         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, CACHE_DRV_CNT,
1337                               INVALID_CHANNEL,sizeof(u32))) {
1338             drv_cnt = *(u32 *)ha->pscratch;
1339             if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, CACHE_DRV_LIST,
1340                                   INVALID_CHANNEL,drv_cnt * sizeof(u32))) {
1341                 for (j = 0; j < drv_cnt; ++j) {
1342                     drv_no = ((u32 *)ha->pscratch)[j];
1343                     if (drv_no < MAX_LDRIVES) {
1344                         ha->hdr[drv_no].is_logdrv = TRUE;
1345                         TRACE2(("Drive %d is log. drive\n",drv_no));
1346                     }
1347                 }
1348             }
1349             alst = (gdth_arcdl_str *)ha->pscratch;
1350             alst->entries_avail = MAX_LDRIVES;
1351             alst->first_entry = 0;
1352             alst->list_offset = GDTOFFSOF(gdth_arcdl_str, list[0]);
1353             if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1354                                   ARRAY_DRV_LIST2 | LA_CTRL_PATTERN,
1355                                   INVALID_CHANNEL, sizeof(gdth_arcdl_str) +
1356                                   (alst->entries_avail-1) * sizeof(gdth_alist_str))) {
1357                 for (j = 0; j < alst->entries_init; ++j) {
1358                     ha->hdr[j].is_arraydrv = alst->list[j].is_arrayd;
1359                     ha->hdr[j].is_master = alst->list[j].is_master;
1360                     ha->hdr[j].is_parity = alst->list[j].is_parity;
1361                     ha->hdr[j].is_hotfix = alst->list[j].is_hotfix;
1362                     ha->hdr[j].master_no = alst->list[j].cd_handle;
1363                 }
1364             } else if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1365                                          ARRAY_DRV_LIST | LA_CTRL_PATTERN,
1366                                          0, 35 * sizeof(gdth_alist_str))) {
1367                 for (j = 0; j < 35; ++j) {
1368                     alst2 = &((gdth_alist_str *)ha->pscratch)[j];
1369                     ha->hdr[j].is_arraydrv = alst2->is_arrayd;
1370                     ha->hdr[j].is_master = alst2->is_master;
1371                     ha->hdr[j].is_parity = alst2->is_parity;
1372                     ha->hdr[j].is_hotfix = alst2->is_hotfix;
1373                     ha->hdr[j].master_no = alst2->cd_handle;
1374                 }
1375             }
1376         }
1377     }
1378
1379     /* initialize raw service */
1380     ha->raw_feat = 0;
1381     if (!force_dma32) {
1382         ok = gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_X_INIT_RAW, 0, 0, 0);
1383         if (ok)
1384             ha->raw_feat = GDT_64BIT;
1385     }
1386     if (force_dma32 || (!ok && ha->status == (u16)S_NOFUNC))
1387         ok = gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_INIT, 0, 0, 0);
1388     if (!ok) {
1389         printk("GDT-HA %d: Initialization error raw service (code %d)\n",
1390                ha->hanum, ha->status);
1391         return 0;
1392     }
1393     TRACE2(("gdth_search_drives(): RAWSERVICE initialized\n"));
1394
1395     /* set/get features raw service (scatter/gather) */
1396     if (gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_SET_FEAT, SCATTER_GATHER,
1397                           0, 0)) {
1398         TRACE2(("gdth_search_drives(): set features RAWSERVICE OK\n"));
1399         if (gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_GET_FEAT, 0, 0, 0)) {
1400             TRACE2(("gdth_search_dr(): get feat RAWSERVICE %d\n",
1401                     ha->info));
1402             ha->raw_feat |= (u16)ha->info;
1403         }
1404     }
1405
1406     /* set/get features cache service (equal to raw service) */
1407     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_SET_FEAT, 0,
1408                           SCATTER_GATHER,0)) {
1409         TRACE2(("gdth_search_drives(): set features CACHESERVICE OK\n"));
1410         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_GET_FEAT, 0, 0, 0)) {
1411             TRACE2(("gdth_search_dr(): get feat CACHESERV. %d\n",
1412                     ha->info));
1413             ha->cache_feat |= (u16)ha->info;
1414         }
1415     }
1416
1417     /* reserve drives for raw service */
1418     if (reserve_mode != 0) {
1419         gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_RESERVE_ALL,
1420                           reserve_mode == 1 ? 1 : 3, 0, 0);
1421         TRACE2(("gdth_search_drives(): RESERVE_ALL code %d\n",
1422                 ha->status));
1423     }
1424     for (i = 0; i < MAX_RES_ARGS; i += 4) {
1425         if (reserve_list[i] == ha->hanum && reserve_list[i+1] < ha->bus_cnt &&
1426             reserve_list[i+2] < ha->tid_cnt && reserve_list[i+3] < MAXLUN) {
1427             TRACE2(("gdth_search_drives(): reserve ha %d bus %d id %d lun %d\n",
1428                     reserve_list[i], reserve_list[i+1],
1429                     reserve_list[i+2], reserve_list[i+3]));
1430             if (!gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_RESERVE, 0,
1431                                    reserve_list[i+1], reserve_list[i+2] |
1432                                    (reserve_list[i+3] << 8))) {
1433                 printk("GDT-HA %d: Error raw service (RESERVE, code %d)\n",
1434                        ha->hanum, ha->status);
1435              }
1436         }
1437     }
1438
1439     /* Determine OEM string using IOCTL */
1440     oemstr = (gdth_oem_str_ioctl *)ha->pscratch;
1441     oemstr->params.ctl_version = 0x01;
1442     oemstr->params.buffer_size = sizeof(oemstr->text);
1443     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1444                           CACHE_READ_OEM_STRING_RECORD,INVALID_CHANNEL,
1445                           sizeof(gdth_oem_str_ioctl))) {
1446         TRACE2(("gdth_search_drives(): CACHE_READ_OEM_STRING_RECORD OK\n"));
1447         printk("GDT-HA %d: Vendor: %s Name: %s\n",
1448                ha->hanum, oemstr->text.oem_company_name, ha->binfo.type_string);
1449         /* Save the Host Drive inquiry data */
1450         strlcpy(ha->oem_name,oemstr->text.scsi_host_drive_inquiry_vendor_id,
1451                 sizeof(ha->oem_name));
1452     } else {
1453         /* Old method, based on PCI ID */
1454         TRACE2(("gdth_search_drives(): CACHE_READ_OEM_STRING_RECORD failed\n"));
1455         printk("GDT-HA %d: Name: %s\n",
1456                ha->hanum, ha->binfo.type_string);
1457         if (ha->oem_id == OEM_ID_INTEL)
1458             strlcpy(ha->oem_name,"Intel  ", sizeof(ha->oem_name));
1459         else
1460             strlcpy(ha->oem_name,"ICP    ", sizeof(ha->oem_name));
1461     }
1462
1463     /* scanning for host drives */
1464     for (i = 0; i < cdev_cnt; ++i)
1465         gdth_analyse_hdrive(ha, i);
1466
1467     TRACE(("gdth_search_drives() OK\n"));
1468     return 1;
1469 }
1470
1471 static int gdth_analyse_hdrive(gdth_ha_str *ha, u16 hdrive)
1472 {
1473     u32 drv_cyls;
1474     int drv_hds, drv_secs;
1475
1476     TRACE(("gdth_analyse_hdrive() hanum %d drive %d\n", ha->hanum, hdrive));
1477     if (hdrive >= MAX_HDRIVES)
1478         return 0;
1479
1480     if (!gdth_internal_cmd(ha, CACHESERVICE, GDT_INFO, hdrive, 0, 0))
1481         return 0;
1482     ha->hdr[hdrive].present = TRUE;
1483     ha->hdr[hdrive].size = ha->info;
1484
1485     /* evaluate mapping (sectors per head, heads per cylinder) */
1486     ha->hdr[hdrive].size &= ~SECS32;
1487     if (ha->info2 == 0) {
1488         gdth_eval_mapping(ha->hdr[hdrive].size,&drv_cyls,&drv_hds,&drv_secs);
1489     } else {
1490         drv_hds = ha->info2 & 0xff;
1491         drv_secs = (ha->info2 >> 8) & 0xff;
1492         drv_cyls = (u32)ha->hdr[hdrive].size / drv_hds / drv_secs;
1493     }
1494     ha->hdr[hdrive].heads = (u8)drv_hds;
1495     ha->hdr[hdrive].secs  = (u8)drv_secs;
1496     /* round size */
1497     ha->hdr[hdrive].size  = drv_cyls * drv_hds * drv_secs;
1498
1499     if (ha->cache_feat & GDT_64BIT) {
1500         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_X_INFO, hdrive, 0, 0)
1501             && ha->info2 != 0) {
1502             ha->hdr[hdrive].size = ((u64)ha->info2 << 32) | ha->info;
1503         }
1504     }
1505     TRACE2(("gdth_search_dr() cdr. %d size %d hds %d scs %d\n",
1506             hdrive,ha->hdr[hdrive].size,drv_hds,drv_secs));
1507
1508     /* get informations about device */
1509     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_DEVTYPE, hdrive, 0, 0)) {
1510         TRACE2(("gdth_search_dr() cache drive %d devtype %d\n",
1511                 hdrive,ha->info));
1512         ha->hdr[hdrive].devtype = (u16)ha->info;
1513     }
1514
1515     /* cluster info */
1516     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_CLUST_INFO, hdrive, 0, 0)) {
1517         TRACE2(("gdth_search_dr() cache drive %d cluster info %d\n",
1518                 hdrive,ha->info));
1519         if (!shared_access)
1520             ha->hdr[hdrive].cluster_type = (u8)ha->info;
1521     }
1522
1523     /* R/W attributes */
1524     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_RW_ATTRIBS, hdrive, 0, 0)) {
1525         TRACE2(("gdth_search_dr() cache drive %d r/w attrib. %d\n",
1526                 hdrive,ha->info));
1527         ha->hdr[hdrive].rw_attribs = (u8)ha->info;
1528     }
1529
1530     return 1;
1531 }
1532
1533
1534 /* command queueing/sending functions */
1535
1536 static void gdth_putq(gdth_ha_str *ha, struct scsi_cmnd *scp, u8 priority)
1537 {
1538     struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
1539     register struct scsi_cmnd *pscp;
1540     register struct scsi_cmnd *nscp;
1541     unsigned long flags;
1542
1543     TRACE(("gdth_putq() priority %d\n",priority));
1544     spin_lock_irqsave(&ha->smp_lock, flags);
1545
1546     if (!cmndinfo->internal_command)
1547         cmndinfo->priority = priority;
1548
1549     if (ha->req_first==NULL) {
1550         ha->req_first = scp;                    /* queue was empty */
1551         scp->SCp.ptr = NULL;
1552     } else {                                    /* queue not empty */
1553         pscp = ha->req_first;
1554         nscp = (struct scsi_cmnd *)pscp->SCp.ptr;
1555         /* priority: 0-highest,..,0xff-lowest */
1556         while (nscp && gdth_cmnd_priv(nscp)->priority <= priority) {
1557             pscp = nscp;
1558             nscp = (struct scsi_cmnd *)pscp->SCp.ptr;
1559         }
1560         pscp->SCp.ptr = (char *)scp;
1561         scp->SCp.ptr  = (char *)nscp;
1562     }
1563     spin_unlock_irqrestore(&ha->smp_lock, flags);
1564
1565 #ifdef GDTH_STATISTICS
1566     flags = 0;
1567     for (nscp=ha->req_first; nscp; nscp=(struct scsi_cmnd*)nscp->SCp.ptr)
1568         ++flags;
1569     if (max_rq < flags) {
1570         max_rq = flags;
1571         TRACE3(("GDT: max_rq = %d\n",(u16)max_rq));
1572     }
1573 #endif
1574 }
1575
1576 static void gdth_next(gdth_ha_str *ha)
1577 {
1578     register struct scsi_cmnd *pscp;
1579     register struct scsi_cmnd *nscp;
1580     u8 b, t, l, firsttime;
1581     u8 this_cmd, next_cmd;
1582     unsigned long flags = 0;
1583     int cmd_index;
1584
1585     TRACE(("gdth_next() hanum %d\n", ha->hanum));
1586     if (!gdth_polling)
1587         spin_lock_irqsave(&ha->smp_lock, flags);
1588
1589     ha->cmd_cnt = ha->cmd_offs_dpmem = 0;
1590     this_cmd = firsttime = TRUE;
1591     next_cmd = gdth_polling ? FALSE:TRUE;
1592     cmd_index = 0;
1593
1594     for (nscp = pscp = ha->req_first; nscp; nscp = (struct scsi_cmnd *)nscp->SCp.ptr) {
1595         struct gdth_cmndinfo *nscp_cmndinfo = gdth_cmnd_priv(nscp);
1596         if (nscp != pscp && nscp != (struct scsi_cmnd *)pscp->SCp.ptr)
1597             pscp = (struct scsi_cmnd *)pscp->SCp.ptr;
1598         if (!nscp_cmndinfo->internal_command) {
1599             b = nscp->device->channel;
1600             t = nscp->device->id;
1601             l = nscp->device->lun;
1602             if (nscp_cmndinfo->priority >= DEFAULT_PRI) {
1603                 if ((b != ha->virt_bus && ha->raw[BUS_L2P(ha,b)].lock) ||
1604                     (b == ha->virt_bus && t < MAX_HDRIVES && ha->hdr[t].lock))
1605                     continue;
1606             }
1607         } else
1608             b = t = l = 0;
1609
1610         if (firsttime) {
1611             if (gdth_test_busy(ha)) {        /* controller busy ? */
1612                 TRACE(("gdth_next() controller %d busy !\n", ha->hanum));
1613                 if (!gdth_polling) {
1614                     spin_unlock_irqrestore(&ha->smp_lock, flags);
1615                     return;
1616                 }
1617                 while (gdth_test_busy(ha))
1618                     gdth_delay(1);
1619             }
1620             firsttime = FALSE;
1621         }
1622
1623         if (!nscp_cmndinfo->internal_command) {
1624         if (nscp_cmndinfo->phase == -1) {
1625             nscp_cmndinfo->phase = CACHESERVICE;           /* default: cache svc. */
1626             if (nscp->cmnd[0] == TEST_UNIT_READY) {
1627                 TRACE2(("TEST_UNIT_READY Bus %d Id %d LUN %d\n",
1628                         b, t, l));
1629                 /* TEST_UNIT_READY -> set scan mode */
1630                 if ((ha->scan_mode & 0x0f) == 0) {
1631                     if (b == 0 && t == 0 && l == 0) {
1632                         ha->scan_mode |= 1;
1633                         TRACE2(("Scan mode: 0x%x\n", ha->scan_mode));
1634                     }
1635                 } else if ((ha->scan_mode & 0x0f) == 1) {
1636                     if (b == 0 && ((t == 0 && l == 1) ||
1637                          (t == 1 && l == 0))) {
1638                         nscp_cmndinfo->OpCode = GDT_SCAN_START;
1639                         nscp_cmndinfo->phase = ((ha->scan_mode & 0x10 ? 1:0) << 8)
1640                             | SCSIRAWSERVICE;
1641                         ha->scan_mode = 0x12;
1642                         TRACE2(("Scan mode: 0x%x (SCAN_START)\n",
1643                                 ha->scan_mode));
1644                     } else {
1645                         ha->scan_mode &= 0x10;
1646                         TRACE2(("Scan mode: 0x%x\n", ha->scan_mode));
1647                     }
1648                 } else if (ha->scan_mode == 0x12) {
1649                     if (b == ha->bus_cnt && t == ha->tid_cnt-1) {
1650                         nscp_cmndinfo->phase = SCSIRAWSERVICE;
1651                         nscp_cmndinfo->OpCode = GDT_SCAN_END;
1652                         ha->scan_mode &= 0x10;
1653                         TRACE2(("Scan mode: 0x%x (SCAN_END)\n",
1654                                 ha->scan_mode));
1655                     }
1656                 }
1657             }
1658             if (b == ha->virt_bus && nscp->cmnd[0] != INQUIRY &&
1659                 nscp->cmnd[0] != READ_CAPACITY && nscp->cmnd[0] != MODE_SENSE &&
1660                 (ha->hdr[t].cluster_type & CLUSTER_DRIVE)) {
1661                 /* always GDT_CLUST_INFO! */
1662                 nscp_cmndinfo->OpCode = GDT_CLUST_INFO;
1663             }
1664         }
1665         }
1666
1667         if (nscp_cmndinfo->OpCode != -1) {
1668             if ((nscp_cmndinfo->phase & 0xff) == CACHESERVICE) {
1669                 if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
1670                     this_cmd = FALSE;
1671                 next_cmd = FALSE;
1672             } else if ((nscp_cmndinfo->phase & 0xff) == SCSIRAWSERVICE) {
1673                 if (!(cmd_index=gdth_fill_raw_cmd(ha, nscp, BUS_L2P(ha, b))))
1674                     this_cmd = FALSE;
1675                 next_cmd = FALSE;
1676             } else {
1677                 memset((char*)nscp->sense_buffer,0,16);
1678                 nscp->sense_buffer[0] = 0x70;
1679                 nscp->sense_buffer[2] = NOT_READY;
1680                 nscp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
1681                 if (!nscp_cmndinfo->wait_for_completion)
1682                     nscp_cmndinfo->wait_for_completion++;
1683                 else
1684                     gdth_scsi_done(nscp);
1685             }
1686         } else if (gdth_cmnd_priv(nscp)->internal_command) {
1687             if (!(cmd_index=gdth_special_cmd(ha, nscp)))
1688                 this_cmd = FALSE;
1689             next_cmd = FALSE;
1690         } else if (b != ha->virt_bus) {
1691             if (ha->raw[BUS_L2P(ha,b)].io_cnt[t] >= GDTH_MAX_RAW ||
1692                 !(cmd_index=gdth_fill_raw_cmd(ha, nscp, BUS_L2P(ha, b))))
1693                 this_cmd = FALSE;
1694             else
1695                 ha->raw[BUS_L2P(ha,b)].io_cnt[t]++;
1696         } else if (t >= MAX_HDRIVES || !ha->hdr[t].present || l != 0) {
1697             TRACE2(("Command 0x%x to bus %d id %d lun %d -> IGNORE\n",
1698                     nscp->cmnd[0], b, t, l));
1699             nscp->result = DID_BAD_TARGET << 16;
1700             if (!nscp_cmndinfo->wait_for_completion)
1701                 nscp_cmndinfo->wait_for_completion++;
1702             else
1703                 gdth_scsi_done(nscp);
1704         } else {
1705             switch (nscp->cmnd[0]) {
1706               case TEST_UNIT_READY:
1707               case INQUIRY:
1708               case REQUEST_SENSE:
1709               case READ_CAPACITY:
1710               case VERIFY:
1711               case START_STOP:
1712               case MODE_SENSE:
1713               case SERVICE_ACTION_IN_16:
1714                 TRACE(("cache cmd %x/%x/%x/%x/%x/%x\n",nscp->cmnd[0],
1715                        nscp->cmnd[1],nscp->cmnd[2],nscp->cmnd[3],
1716                        nscp->cmnd[4],nscp->cmnd[5]));
1717                 if (ha->hdr[t].media_changed && nscp->cmnd[0] != INQUIRY) {
1718                     /* return UNIT_ATTENTION */
1719                     TRACE2(("cmd 0x%x target %d: UNIT_ATTENTION\n",
1720                              nscp->cmnd[0], t));
1721                     ha->hdr[t].media_changed = FALSE;
1722                     memset((char*)nscp->sense_buffer,0,16);
1723                     nscp->sense_buffer[0] = 0x70;
1724                     nscp->sense_buffer[2] = UNIT_ATTENTION;
1725                     nscp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
1726                     if (!nscp_cmndinfo->wait_for_completion)
1727                         nscp_cmndinfo->wait_for_completion++;
1728                     else
1729                         gdth_scsi_done(nscp);
1730                 } else if (gdth_internal_cache_cmd(ha, nscp))
1731                     gdth_scsi_done(nscp);
1732                 break;
1733
1734               case ALLOW_MEDIUM_REMOVAL:
1735                 TRACE(("cache cmd %x/%x/%x/%x/%x/%x\n",nscp->cmnd[0],
1736                        nscp->cmnd[1],nscp->cmnd[2],nscp->cmnd[3],
1737                        nscp->cmnd[4],nscp->cmnd[5]));
1738                 if ( (nscp->cmnd[4]&1) && !(ha->hdr[t].devtype&1) ) {
1739                     TRACE(("Prevent r. nonremov. drive->do nothing\n"));
1740                     nscp->result = DID_OK << 16;
1741                     nscp->sense_buffer[0] = 0;
1742                     if (!nscp_cmndinfo->wait_for_completion)
1743                         nscp_cmndinfo->wait_for_completion++;
1744                     else
1745                         gdth_scsi_done(nscp);
1746                 } else {
1747                     nscp->cmnd[3] = (ha->hdr[t].devtype&1) ? 1:0;
1748                     TRACE(("Prevent/allow r. %d rem. drive %d\n",
1749                            nscp->cmnd[4],nscp->cmnd[3]));
1750                     if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
1751                         this_cmd = FALSE;
1752                 }
1753                 break;
1754
1755               case RESERVE:
1756               case RELEASE:
1757                 TRACE2(("cache cmd %s\n",nscp->cmnd[0] == RESERVE ?
1758                         "RESERVE" : "RELEASE"));
1759                 if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
1760                     this_cmd = FALSE;
1761                 break;
1762
1763               case READ_6:
1764               case WRITE_6:
1765               case READ_10:
1766               case WRITE_10:
1767               case READ_16:
1768               case WRITE_16:
1769                 if (ha->hdr[t].media_changed) {
1770                     /* return UNIT_ATTENTION */
1771                     TRACE2(("cmd 0x%x target %d: UNIT_ATTENTION\n",
1772                              nscp->cmnd[0], t));
1773                     ha->hdr[t].media_changed = FALSE;
1774                     memset((char*)nscp->sense_buffer,0,16);
1775                     nscp->sense_buffer[0] = 0x70;
1776                     nscp->sense_buffer[2] = UNIT_ATTENTION;
1777                     nscp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
1778                     if (!nscp_cmndinfo->wait_for_completion)
1779                         nscp_cmndinfo->wait_for_completion++;
1780                     else
1781                         gdth_scsi_done(nscp);
1782                 } else if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
1783                     this_cmd = FALSE;
1784                 break;
1785
1786               default:
1787                 TRACE2(("cache cmd %x/%x/%x/%x/%x/%x unknown\n",nscp->cmnd[0],
1788                         nscp->cmnd[1],nscp->cmnd[2],nscp->cmnd[3],
1789                         nscp->cmnd[4],nscp->cmnd[5]));
1790                 printk("GDT-HA %d: Unknown SCSI command 0x%x to cache service !\n",
1791                        ha->hanum, nscp->cmnd[0]);
1792                 nscp->result = DID_ABORT << 16;
1793                 if (!nscp_cmndinfo->wait_for_completion)
1794                     nscp_cmndinfo->wait_for_completion++;
1795                 else
1796                     gdth_scsi_done(nscp);
1797                 break;
1798             }
1799         }
1800
1801         if (!this_cmd)
1802             break;
1803         if (nscp == ha->req_first)
1804             ha->req_first = pscp = (struct scsi_cmnd *)nscp->SCp.ptr;
1805         else
1806             pscp->SCp.ptr = nscp->SCp.ptr;
1807         if (!next_cmd)
1808             break;
1809     }
1810
1811     if (ha->cmd_cnt > 0) {
1812         gdth_release_event(ha);
1813     }
1814
1815     if (!gdth_polling)
1816         spin_unlock_irqrestore(&ha->smp_lock, flags);
1817
1818     if (gdth_polling && ha->cmd_cnt > 0) {
1819         if (!gdth_wait(ha, cmd_index, POLL_TIMEOUT))
1820             printk("GDT-HA %d: Command %d timed out !\n",
1821                    ha->hanum, cmd_index);
1822     }
1823 }
1824
1825 /*
1826  * gdth_copy_internal_data() - copy to/from a buffer onto a scsi_cmnd's
1827  * buffers, kmap_atomic() as needed.
1828  */
1829 static void gdth_copy_internal_data(gdth_ha_str *ha, struct scsi_cmnd *scp,
1830                                     char *buffer, u16 count)
1831 {
1832     u16 cpcount,i, max_sg = scsi_sg_count(scp);
1833     u16 cpsum,cpnow;
1834     struct scatterlist *sl;
1835     char *address;
1836
1837     cpcount = min_t(u16, count, scsi_bufflen(scp));
1838
1839     if (cpcount) {
1840         cpsum=0;
1841         scsi_for_each_sg(scp, sl, max_sg, i) {
1842             unsigned long flags;
1843             cpnow = (u16)sl->length;
1844             TRACE(("copy_internal() now %d sum %d count %d %d\n",
1845                           cpnow, cpsum, cpcount, scsi_bufflen(scp)));
1846             if (cpsum+cpnow > cpcount)
1847                 cpnow = cpcount - cpsum;
1848             cpsum += cpnow;
1849             if (!sg_page(sl)) {
1850                 printk("GDT-HA %d: invalid sc/gt element in gdth_copy_internal_data()\n",
1851                        ha->hanum);
1852                 return;
1853             }
1854             local_irq_save(flags);
1855             address = kmap_atomic(sg_page(sl)) + sl->offset;
1856             memcpy(address, buffer, cpnow);
1857             flush_dcache_page(sg_page(sl));
1858             kunmap_atomic(address);
1859             local_irq_restore(flags);
1860             if (cpsum == cpcount)
1861                 break;
1862             buffer += cpnow;
1863         }
1864     } else if (count) {
1865         printk("GDT-HA %d: SCSI command with no buffers but data transfer expected!\n",
1866                ha->hanum);
1867         WARN_ON(1);
1868     }
1869 }
1870
1871 static int gdth_internal_cache_cmd(gdth_ha_str *ha, struct scsi_cmnd *scp)
1872 {
1873     u8 t;
1874     gdth_inq_data inq;
1875     gdth_rdcap_data rdc;
1876     gdth_sense_data sd;
1877     gdth_modep_data mpd;
1878     struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
1879
1880     t  = scp->device->id;
1881     TRACE(("gdth_internal_cache_cmd() cmd 0x%x hdrive %d\n",
1882            scp->cmnd[0],t));
1883
1884     scp->result = DID_OK << 16;
1885     scp->sense_buffer[0] = 0;
1886
1887     switch (scp->cmnd[0]) {
1888       case TEST_UNIT_READY:
1889       case VERIFY:
1890       case START_STOP:
1891         TRACE2(("Test/Verify/Start hdrive %d\n",t));
1892         break;
1893
1894       case INQUIRY:
1895         TRACE2(("Inquiry hdrive %d devtype %d\n",
1896                 t,ha->hdr[t].devtype));
1897         inq.type_qual = (ha->hdr[t].devtype&4) ? TYPE_ROM:TYPE_DISK;
1898         /* you can here set all disks to removable, if you want to do
1899            a flush using the ALLOW_MEDIUM_REMOVAL command */
1900         inq.modif_rmb = 0x00;
1901         if ((ha->hdr[t].devtype & 1) ||
1902             (ha->hdr[t].cluster_type & CLUSTER_DRIVE))
1903             inq.modif_rmb = 0x80;
1904         inq.version   = 2;
1905         inq.resp_aenc = 2;
1906         inq.add_length= 32;
1907         strcpy(inq.vendor,ha->oem_name);
1908         snprintf(inq.product, sizeof(inq.product), "Host Drive  #%02d",t);
1909         strcpy(inq.revision,"   ");
1910         gdth_copy_internal_data(ha, scp, (char*)&inq, sizeof(gdth_inq_data));
1911         break;
1912
1913       case REQUEST_SENSE:
1914         TRACE2(("Request sense hdrive %d\n",t));
1915         sd.errorcode = 0x70;
1916         sd.segno     = 0x00;
1917         sd.key       = NO_SENSE;
1918         sd.info      = 0;
1919         sd.add_length= 0;
1920         gdth_copy_internal_data(ha, scp, (char*)&sd, sizeof(gdth_sense_data));
1921         break;
1922
1923       case MODE_SENSE:
1924         TRACE2(("Mode sense hdrive %d\n",t));
1925         memset((char*)&mpd,0,sizeof(gdth_modep_data));
1926         mpd.hd.data_length = sizeof(gdth_modep_data);
1927         mpd.hd.dev_par     = (ha->hdr[t].devtype&2) ? 0x80:0;
1928         mpd.hd.bd_length   = sizeof(mpd.bd);
1929         mpd.bd.block_length[0] = (SECTOR_SIZE & 0x00ff0000) >> 16;
1930         mpd.bd.block_length[1] = (SECTOR_SIZE & 0x0000ff00) >> 8;
1931         mpd.bd.block_length[2] = (SECTOR_SIZE & 0x000000ff);
1932         gdth_copy_internal_data(ha, scp, (char*)&mpd, sizeof(gdth_modep_data));
1933         break;
1934
1935       case READ_CAPACITY:
1936         TRACE2(("Read capacity hdrive %d\n",t));
1937         if (ha->hdr[t].size > (u64)0xffffffff)
1938             rdc.last_block_no = 0xffffffff;
1939         else
1940             rdc.last_block_no = cpu_to_be32(ha->hdr[t].size-1);
1941         rdc.block_length  = cpu_to_be32(SECTOR_SIZE);
1942         gdth_copy_internal_data(ha, scp, (char*)&rdc, sizeof(gdth_rdcap_data));
1943         break;
1944
1945       case SERVICE_ACTION_IN_16:
1946         if ((scp->cmnd[1] & 0x1f) == SAI_READ_CAPACITY_16 &&
1947             (ha->cache_feat & GDT_64BIT)) {
1948             gdth_rdcap16_data rdc16;
1949
1950             TRACE2(("Read capacity (16) hdrive %d\n",t));
1951             rdc16.last_block_no = cpu_to_be64(ha->hdr[t].size-1);
1952             rdc16.block_length  = cpu_to_be32(SECTOR_SIZE);
1953             gdth_copy_internal_data(ha, scp, (char*)&rdc16,
1954                                                  sizeof(gdth_rdcap16_data));
1955         } else {
1956             scp->result = DID_ABORT << 16;
1957         }
1958         break;
1959
1960       default:
1961         TRACE2(("Internal cache cmd 0x%x unknown\n",scp->cmnd[0]));
1962         break;
1963     }
1964
1965     if (!cmndinfo->wait_for_completion)
1966         cmndinfo->wait_for_completion++;
1967     else
1968         return 1;
1969
1970     return 0;
1971 }
1972
1973 static int gdth_fill_cache_cmd(gdth_ha_str *ha, struct scsi_cmnd *scp,
1974                                u16 hdrive)
1975 {
1976     register gdth_cmd_str *cmdp;
1977     struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
1978     u32 cnt, blockcnt;
1979     u64 no, blockno;
1980     int i, cmd_index, read_write, sgcnt, mode64;
1981
1982     cmdp = ha->pccb;
1983     TRACE(("gdth_fill_cache_cmd() cmd 0x%x cmdsize %d hdrive %d\n",
1984                  scp->cmnd[0],scp->cmd_len,hdrive));
1985
1986     mode64 = (ha->cache_feat & GDT_64BIT) ? TRUE : FALSE;
1987     /* test for READ_16, WRITE_16 if !mode64 ? ---
1988        not required, should not occur due to error return on
1989        READ_CAPACITY_16 */
1990
1991     cmdp->Service = CACHESERVICE;
1992     cmdp->RequestBuffer = scp;
1993     /* search free command index */
1994     if (!(cmd_index=gdth_get_cmd_index(ha))) {
1995         TRACE(("GDT: No free command index found\n"));
1996         return 0;
1997     }
1998     /* if it's the first command, set command semaphore */
1999     if (ha->cmd_cnt == 0)
2000         gdth_set_sema0(ha);
2001
2002     /* fill command */
2003     read_write = 0;
2004     if (cmndinfo->OpCode != -1)
2005         cmdp->OpCode = cmndinfo->OpCode;   /* special cache cmd. */
2006     else if (scp->cmnd[0] == RESERVE)
2007         cmdp->OpCode = GDT_RESERVE_DRV;
2008     else if (scp->cmnd[0] == RELEASE)
2009         cmdp->OpCode = GDT_RELEASE_DRV;
2010     else if (scp->cmnd[0] == ALLOW_MEDIUM_REMOVAL) {
2011         if (scp->cmnd[4] & 1)                   /* prevent ? */
2012             cmdp->OpCode = GDT_MOUNT;
2013         else if (scp->cmnd[3] & 1)              /* removable drive ? */
2014             cmdp->OpCode = GDT_UNMOUNT;
2015         else
2016             cmdp->OpCode = GDT_FLUSH;
2017     } else if (scp->cmnd[0] == WRITE_6 || scp->cmnd[0] == WRITE_10 ||
2018                scp->cmnd[0] == WRITE_12 || scp->cmnd[0] == WRITE_16
2019     ) {
2020         read_write = 1;
2021         if (gdth_write_through || ((ha->hdr[hdrive].rw_attribs & 1) &&
2022                                    (ha->cache_feat & GDT_WR_THROUGH)))
2023             cmdp->OpCode = GDT_WRITE_THR;
2024         else
2025             cmdp->OpCode = GDT_WRITE;
2026     } else {
2027         read_write = 2;
2028         cmdp->OpCode = GDT_READ;
2029     }
2030
2031     cmdp->BoardNode = LOCALBOARD;
2032     if (mode64) {
2033         cmdp->u.cache64.DeviceNo = hdrive;
2034         cmdp->u.cache64.BlockNo  = 1;
2035         cmdp->u.cache64.sg_canz  = 0;
2036     } else {
2037         cmdp->u.cache.DeviceNo = hdrive;
2038         cmdp->u.cache.BlockNo  = 1;
2039         cmdp->u.cache.sg_canz  = 0;
2040     }
2041
2042     if (read_write) {
2043         if (scp->cmd_len == 16) {
2044             memcpy(&no, &scp->cmnd[2], sizeof(u64));
2045             blockno = be64_to_cpu(no);
2046             memcpy(&cnt, &scp->cmnd[10], sizeof(u32));
2047             blockcnt = be32_to_cpu(cnt);
2048         } else if (scp->cmd_len == 10) {
2049             memcpy(&no, &scp->cmnd[2], sizeof(u32));
2050             blockno = be32_to_cpu(no);
2051             memcpy(&cnt, &scp->cmnd[7], sizeof(u16));
2052             blockcnt = be16_to_cpu(cnt);
2053         } else {
2054             memcpy(&no, &scp->cmnd[0], sizeof(u32));
2055             blockno = be32_to_cpu(no) & 0x001fffffUL;
2056             blockcnt= scp->cmnd[4]==0 ? 0x100 : scp->cmnd[4];
2057         }
2058         if (mode64) {
2059             cmdp->u.cache64.BlockNo = blockno;
2060             cmdp->u.cache64.BlockCnt = blockcnt;
2061         } else {
2062             cmdp->u.cache.BlockNo = (u32)blockno;
2063             cmdp->u.cache.BlockCnt = blockcnt;
2064         }
2065
2066         if (scsi_bufflen(scp)) {
2067             cmndinfo->dma_dir = (read_write == 1 ?
2068                 DMA_TO_DEVICE : DMA_FROM_DEVICE);
2069             sgcnt = dma_map_sg(&ha->pdev->dev, scsi_sglist(scp),
2070                                scsi_sg_count(scp), cmndinfo->dma_dir);
2071             if (mode64) {
2072                 struct scatterlist *sl;
2073
2074                 cmdp->u.cache64.DestAddr= (u64)-1;
2075                 cmdp->u.cache64.sg_canz = sgcnt;
2076                 scsi_for_each_sg(scp, sl, sgcnt, i) {
2077                     cmdp->u.cache64.sg_lst[i].sg_ptr = sg_dma_address(sl);
2078                     cmdp->u.cache64.sg_lst[i].sg_len = sg_dma_len(sl);
2079                 }
2080             } else {
2081                 struct scatterlist *sl;
2082
2083                 cmdp->u.cache.DestAddr= 0xffffffff;
2084                 cmdp->u.cache.sg_canz = sgcnt;
2085                 scsi_for_each_sg(scp, sl, sgcnt, i) {
2086                     cmdp->u.cache.sg_lst[i].sg_ptr = sg_dma_address(sl);
2087                     cmdp->u.cache.sg_lst[i].sg_len = sg_dma_len(sl);
2088                 }
2089             }
2090
2091 #ifdef GDTH_STATISTICS
2092             if (max_sg < (u32)sgcnt) {
2093                 max_sg = (u32)sgcnt;
2094                 TRACE3(("GDT: max_sg = %d\n",max_sg));
2095             }
2096 #endif
2097
2098         }
2099     }
2100     /* evaluate command size, check space */
2101     if (mode64) {
2102         TRACE(("cache cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
2103                cmdp->u.cache64.DestAddr,cmdp->u.cache64.sg_canz,
2104                cmdp->u.cache64.sg_lst[0].sg_ptr,
2105                cmdp->u.cache64.sg_lst[0].sg_len));
2106         TRACE(("cache cmd: cmd %d blockno. %d, blockcnt %d\n",
2107                cmdp->OpCode,cmdp->u.cache64.BlockNo,cmdp->u.cache64.BlockCnt));
2108         ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.cache64.sg_lst) +
2109             (u16)cmdp->u.cache64.sg_canz * sizeof(gdth_sg64_str);
2110     } else {
2111         TRACE(("cache cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
2112                cmdp->u.cache.DestAddr,cmdp->u.cache.sg_canz,
2113                cmdp->u.cache.sg_lst[0].sg_ptr,
2114                cmdp->u.cache.sg_lst[0].sg_len));
2115         TRACE(("cache cmd: cmd %d blockno. %d, blockcnt %d\n",
2116                cmdp->OpCode,cmdp->u.cache.BlockNo,cmdp->u.cache.BlockCnt));
2117         ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.cache.sg_lst) +
2118             (u16)cmdp->u.cache.sg_canz * sizeof(gdth_sg_str);
2119     }
2120     if (ha->cmd_len & 3)
2121         ha->cmd_len += (4 - (ha->cmd_len & 3));
2122
2123     if (ha->cmd_cnt > 0) {
2124         if ((ha->cmd_offs_dpmem + ha->cmd_len + DPMEM_COMMAND_OFFSET) >
2125             ha->ic_all_size) {
2126             TRACE2(("gdth_fill_cache() DPMEM overflow\n"));
2127             ha->cmd_tab[cmd_index-2].cmnd = UNUSED_CMND;
2128             return 0;
2129         }
2130     }
2131
2132     /* copy command */
2133     gdth_copy_command(ha);
2134     return cmd_index;
2135 }
2136
2137 static int gdth_fill_raw_cmd(gdth_ha_str *ha, struct scsi_cmnd *scp, u8 b)
2138 {
2139     register gdth_cmd_str *cmdp;
2140     u16 i;
2141     dma_addr_t sense_paddr;
2142     int cmd_index, sgcnt, mode64;
2143     u8 t,l;
2144     struct gdth_cmndinfo *cmndinfo;
2145
2146     t = scp->device->id;
2147     l = scp->device->lun;
2148     cmdp = ha->pccb;
2149     TRACE(("gdth_fill_raw_cmd() cmd 0x%x bus %d ID %d LUN %d\n",
2150            scp->cmnd[0],b,t,l));
2151
2152     mode64 = (ha->raw_feat & GDT_64BIT) ? TRUE : FALSE;
2153
2154     cmdp->Service = SCSIRAWSERVICE;
2155     cmdp->RequestBuffer = scp;
2156     /* search free command index */
2157     if (!(cmd_index=gdth_get_cmd_index(ha))) {
2158         TRACE(("GDT: No free command index found\n"));
2159         return 0;
2160     }
2161     /* if it's the first command, set command semaphore */
2162     if (ha->cmd_cnt == 0)
2163         gdth_set_sema0(ha);
2164
2165     cmndinfo = gdth_cmnd_priv(scp);
2166     /* fill command */
2167     if (cmndinfo->OpCode != -1) {
2168         cmdp->OpCode           = cmndinfo->OpCode; /* special raw cmd. */
2169         cmdp->BoardNode        = LOCALBOARD;
2170         if (mode64) {
2171             cmdp->u.raw64.direction = (cmndinfo->phase >> 8);
2172             TRACE2(("special raw cmd 0x%x param 0x%x\n",
2173                     cmdp->OpCode, cmdp->u.raw64.direction));
2174             /* evaluate command size */
2175             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw64.sg_lst);
2176         } else {
2177             cmdp->u.raw.direction  = (cmndinfo->phase >> 8);
2178             TRACE2(("special raw cmd 0x%x param 0x%x\n",
2179                     cmdp->OpCode, cmdp->u.raw.direction));
2180             /* evaluate command size */
2181             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw.sg_lst);
2182         }
2183
2184     } else {
2185         sense_paddr = dma_map_single(&ha->pdev->dev, scp->sense_buffer, 16,
2186                                      DMA_FROM_DEVICE);
2187
2188         cmndinfo->sense_paddr  = sense_paddr;
2189         cmdp->OpCode           = GDT_WRITE;             /* always */
2190         cmdp->BoardNode        = LOCALBOARD;
2191         if (mode64) {
2192             cmdp->u.raw64.reserved   = 0;
2193             cmdp->u.raw64.mdisc_time = 0;
2194             cmdp->u.raw64.mcon_time  = 0;
2195             cmdp->u.raw64.clen       = scp->cmd_len;
2196             cmdp->u.raw64.target     = t;
2197             cmdp->u.raw64.lun        = l;
2198             cmdp->u.raw64.bus        = b;
2199             cmdp->u.raw64.priority   = 0;
2200             cmdp->u.raw64.sdlen      = scsi_bufflen(scp);
2201             cmdp->u.raw64.sense_len  = 16;
2202             cmdp->u.raw64.sense_data = sense_paddr;
2203             cmdp->u.raw64.direction  =
2204                 gdth_direction_tab[scp->cmnd[0]]==DOU ? GDTH_DATA_OUT:GDTH_DATA_IN;
2205             memcpy(cmdp->u.raw64.cmd,scp->cmnd,16);
2206             cmdp->u.raw64.sg_ranz    = 0;
2207         } else {
2208             cmdp->u.raw.reserved   = 0;
2209             cmdp->u.raw.mdisc_time = 0;
2210             cmdp->u.raw.mcon_time  = 0;
2211             cmdp->u.raw.clen       = scp->cmd_len;
2212             cmdp->u.raw.target     = t;
2213             cmdp->u.raw.lun        = l;
2214             cmdp->u.raw.bus        = b;
2215             cmdp->u.raw.priority   = 0;
2216             cmdp->u.raw.link_p     = 0;
2217             cmdp->u.raw.sdlen      = scsi_bufflen(scp);
2218             cmdp->u.raw.sense_len  = 16;
2219             cmdp->u.raw.sense_data = sense_paddr;
2220             cmdp->u.raw.direction  =
2221                 gdth_direction_tab[scp->cmnd[0]]==DOU ? GDTH_DATA_OUT:GDTH_DATA_IN;
2222             memcpy(cmdp->u.raw.cmd,scp->cmnd,12);
2223             cmdp->u.raw.sg_ranz    = 0;
2224         }
2225
2226         if (scsi_bufflen(scp)) {
2227             cmndinfo->dma_dir = DMA_BIDIRECTIONAL;
2228             sgcnt = dma_map_sg(&ha->pdev->dev, scsi_sglist(scp),
2229                                scsi_sg_count(scp), cmndinfo->dma_dir);
2230             if (mode64) {
2231                 struct scatterlist *sl;
2232
2233                 cmdp->u.raw64.sdata = (u64)-1;
2234                 cmdp->u.raw64.sg_ranz = sgcnt;
2235                 scsi_for_each_sg(scp, sl, sgcnt, i) {
2236                     cmdp->u.raw64.sg_lst[i].sg_ptr = sg_dma_address(sl);
2237                     cmdp->u.raw64.sg_lst[i].sg_len = sg_dma_len(sl);
2238                 }
2239             } else {
2240                 struct scatterlist *sl;
2241
2242                 cmdp->u.raw.sdata = 0xffffffff;
2243                 cmdp->u.raw.sg_ranz = sgcnt;
2244                 scsi_for_each_sg(scp, sl, sgcnt, i) {
2245                     cmdp->u.raw.sg_lst[i].sg_ptr = sg_dma_address(sl);
2246                     cmdp->u.raw.sg_lst[i].sg_len = sg_dma_len(sl);
2247                 }
2248             }
2249
2250 #ifdef GDTH_STATISTICS
2251             if (max_sg < sgcnt) {
2252                 max_sg = sgcnt;
2253                 TRACE3(("GDT: max_sg = %d\n",sgcnt));
2254             }
2255 #endif
2256
2257         }
2258         if (mode64) {
2259             TRACE(("raw cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
2260                    cmdp->u.raw64.sdata,cmdp->u.raw64.sg_ranz,
2261                    cmdp->u.raw64.sg_lst[0].sg_ptr,
2262                    cmdp->u.raw64.sg_lst[0].sg_len));
2263             /* evaluate command size */
2264             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw64.sg_lst) +
2265                 (u16)cmdp->u.raw64.sg_ranz * sizeof(gdth_sg64_str);
2266         } else {
2267             TRACE(("raw cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
2268                    cmdp->u.raw.sdata,cmdp->u.raw.sg_ranz,
2269                    cmdp->u.raw.sg_lst[0].sg_ptr,
2270                    cmdp->u.raw.sg_lst[0].sg_len));
2271             /* evaluate command size */
2272             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw.sg_lst) +
2273                 (u16)cmdp->u.raw.sg_ranz * sizeof(gdth_sg_str);
2274         }
2275     }
2276     /* check space */
2277     if (ha->cmd_len & 3)
2278         ha->cmd_len += (4 - (ha->cmd_len & 3));
2279
2280     if (ha->cmd_cnt > 0) {
2281         if ((ha->cmd_offs_dpmem + ha->cmd_len + DPMEM_COMMAND_OFFSET) >
2282             ha->ic_all_size) {
2283             TRACE2(("gdth_fill_raw() DPMEM overflow\n"));
2284             ha->cmd_tab[cmd_index-2].cmnd = UNUSED_CMND;
2285             return 0;
2286         }
2287     }
2288
2289     /* copy command */
2290     gdth_copy_command(ha);
2291     return cmd_index;
2292 }
2293
2294 static int gdth_special_cmd(gdth_ha_str *ha, struct scsi_cmnd *scp)
2295 {
2296     register gdth_cmd_str *cmdp;
2297     struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
2298     int cmd_index;
2299
2300     cmdp= ha->pccb;
2301     TRACE2(("gdth_special_cmd(): "));
2302
2303     *cmdp = *cmndinfo->internal_cmd_str;
2304     cmdp->RequestBuffer = scp;
2305
2306     /* search free command index */
2307     if (!(cmd_index=gdth_get_cmd_index(ha))) {
2308         TRACE(("GDT: No free command index found\n"));
2309         return 0;
2310     }
2311
2312     /* if it's the first command, set command semaphore */
2313     if (ha->cmd_cnt == 0)
2314        gdth_set_sema0(ha);
2315
2316     /* evaluate command size, check space */
2317     if (cmdp->OpCode == GDT_IOCTL) {
2318         TRACE2(("IOCTL\n"));
2319         ha->cmd_len =
2320             GDTOFFSOF(gdth_cmd_str,u.ioctl.p_param) + sizeof(u64);
2321     } else if (cmdp->Service == CACHESERVICE) {
2322         TRACE2(("cache command %d\n",cmdp->OpCode));
2323         if (ha->cache_feat & GDT_64BIT)
2324             ha->cmd_len =
2325                 GDTOFFSOF(gdth_cmd_str,u.cache64.sg_lst) + sizeof(gdth_sg64_str);
2326         else
2327             ha->cmd_len =
2328                 GDTOFFSOF(gdth_cmd_str,u.cache.sg_lst) + sizeof(gdth_sg_str);
2329     } else if (cmdp->Service == SCSIRAWSERVICE) {
2330         TRACE2(("raw command %d\n",cmdp->OpCode));
2331         if (ha->raw_feat & GDT_64BIT)
2332             ha->cmd_len =
2333                 GDTOFFSOF(gdth_cmd_str,u.raw64.sg_lst) + sizeof(gdth_sg64_str);
2334         else
2335             ha->cmd_len =
2336                 GDTOFFSOF(gdth_cmd_str,u.raw.sg_lst) + sizeof(gdth_sg_str);
2337     }
2338
2339     if (ha->cmd_len & 3)
2340         ha->cmd_len += (4 - (ha->cmd_len & 3));
2341
2342     if (ha->cmd_cnt > 0) {
2343         if ((ha->cmd_offs_dpmem + ha->cmd_len + DPMEM_COMMAND_OFFSET) >
2344             ha->ic_all_size) {
2345             TRACE2(("gdth_special_cmd() DPMEM overflow\n"));
2346             ha->cmd_tab[cmd_index-2].cmnd = UNUSED_CMND;
2347             return 0;
2348         }
2349     }
2350
2351     /* copy command */
2352     gdth_copy_command(ha);
2353     return cmd_index;
2354 }
2355
2356
2357 /* Controller event handling functions */
2358 static gdth_evt_str *gdth_store_event(gdth_ha_str *ha, u16 source,
2359                                       u16 idx, gdth_evt_data *evt)
2360 {
2361     gdth_evt_str *e;
2362
2363     /* no GDTH_LOCK_HA() ! */
2364     TRACE2(("gdth_store_event() source %d idx %d\n", source, idx));
2365     if (source == 0)                        /* no source -> no event */
2366         return NULL;
2367
2368     if (ebuffer[elastidx].event_source == source &&
2369         ebuffer[elastidx].event_idx == idx &&
2370         ((evt->size != 0 && ebuffer[elastidx].event_data.size != 0 &&
2371             !memcmp((char *)&ebuffer[elastidx].event_data.eu,
2372             (char *)&evt->eu, evt->size)) ||
2373         (evt->size == 0 && ebuffer[elastidx].event_data.size == 0 &&
2374             !strcmp((char *)&ebuffer[elastidx].event_data.event_string,
2375             (char *)&evt->event_string)))) {
2376         e = &ebuffer[elastidx];
2377         e->last_stamp = (u32)ktime_get_real_seconds();
2378         ++e->same_count;
2379     } else {
2380         if (ebuffer[elastidx].event_source != 0) {  /* entry not free ? */
2381             ++elastidx;
2382             if (elastidx == MAX_EVENTS)
2383                 elastidx = 0;
2384             if (elastidx == eoldidx) {              /* reached mark ? */
2385                 ++eoldidx;
2386                 if (eoldidx == MAX_EVENTS)
2387                     eoldidx = 0;
2388             }
2389         }
2390         e = &ebuffer[elastidx];
2391         e->event_source = source;
2392         e->event_idx = idx;
2393         e->first_stamp = e->last_stamp = (u32)ktime_get_real_seconds();
2394         e->same_count = 1;
2395         e->event_data = *evt;
2396         e->application = 0;
2397     }
2398     return e;
2399 }
2400
2401 static int gdth_read_event(gdth_ha_str *ha, int handle, gdth_evt_str *estr)
2402 {
2403     gdth_evt_str *e;
2404     int eindex;
2405     unsigned long flags;
2406
2407     TRACE2(("gdth_read_event() handle %d\n", handle));
2408     spin_lock_irqsave(&ha->smp_lock, flags);
2409     if (handle == -1)
2410         eindex = eoldidx;
2411     else
2412         eindex = handle;
2413     estr->event_source = 0;
2414
2415     if (eindex < 0 || eindex >= MAX_EVENTS) {
2416         spin_unlock_irqrestore(&ha->smp_lock, flags);
2417         return eindex;
2418     }
2419     e = &ebuffer[eindex];
2420     if (e->event_source != 0) {
2421         if (eindex != elastidx) {
2422             if (++eindex == MAX_EVENTS)
2423                 eindex = 0;
2424         } else {
2425             eindex = -1;
2426         }
2427         memcpy(estr, e, sizeof(gdth_evt_str));
2428     }
2429     spin_unlock_irqrestore(&ha->smp_lock, flags);
2430     return eindex;
2431 }
2432
2433 static void gdth_readapp_event(gdth_ha_str *ha,
2434                                u8 application, gdth_evt_str *estr)
2435 {
2436     gdth_evt_str *e;
2437     int eindex;
2438     unsigned long flags;
2439     u8 found = FALSE;
2440
2441     TRACE2(("gdth_readapp_event() app. %d\n", application));
2442     spin_lock_irqsave(&ha->smp_lock, flags);
2443     eindex = eoldidx;
2444     for (;;) {
2445         e = &ebuffer[eindex];
2446         if (e->event_source == 0)
2447             break;
2448         if ((e->application & application) == 0) {
2449             e->application |= application;
2450             found = TRUE;
2451             break;
2452         }
2453         if (eindex == elastidx)
2454             break;
2455         if (++eindex == MAX_EVENTS)
2456             eindex = 0;
2457     }
2458     if (found)
2459         memcpy(estr, e, sizeof(gdth_evt_str));
2460     else
2461         estr->event_source = 0;
2462     spin_unlock_irqrestore(&ha->smp_lock, flags);
2463 }
2464
2465 static void gdth_clear_events(void)
2466 {
2467     TRACE(("gdth_clear_events()"));
2468
2469     eoldidx = elastidx = 0;
2470     ebuffer[0].event_source = 0;
2471 }
2472
2473
2474 /* SCSI interface functions */
2475
2476 static irqreturn_t __gdth_interrupt(gdth_ha_str *ha,
2477                                     int gdth_from_wait, int* pIndex)
2478 {
2479     gdt6m_dpram_str __iomem *dp6m_ptr = NULL;
2480     gdt6_dpram_str __iomem *dp6_ptr;
2481     struct scsi_cmnd *scp;
2482     int rval, i;
2483     u8 IStatus;
2484     u16 Service;
2485     unsigned long flags = 0;
2486
2487     TRACE(("gdth_interrupt() IRQ %d\n", ha->irq));
2488
2489     /* if polling and not from gdth_wait() -> return */
2490     if (gdth_polling) {
2491         if (!gdth_from_wait) {
2492             return IRQ_HANDLED;
2493         }
2494     }
2495
2496     if (!gdth_polling)
2497         spin_lock_irqsave(&ha->smp_lock, flags);
2498
2499     /* search controller */
2500     IStatus = gdth_get_status(ha);
2501     if (IStatus == 0) {
2502         /* spurious interrupt */
2503         if (!gdth_polling)
2504             spin_unlock_irqrestore(&ha->smp_lock, flags);
2505         return IRQ_HANDLED;
2506     }
2507
2508 #ifdef GDTH_STATISTICS
2509     ++act_ints;
2510 #endif
2511
2512         if (ha->type == GDT_PCI) {
2513             dp6_ptr = ha->brd;
2514             if (IStatus & 0x80) {                       /* error flag */
2515                 IStatus &= ~0x80;
2516                 ha->status = readw(&dp6_ptr->u.ic.Status);
2517                 TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
2518             } else                                      /* no error */
2519                 ha->status = S_OK;
2520             ha->info = readl(&dp6_ptr->u.ic.Info[0]);
2521             ha->service = readw(&dp6_ptr->u.ic.Service);
2522             ha->info2 = readl(&dp6_ptr->u.ic.Info[1]);
2523
2524             writeb(0xff, &dp6_ptr->io.irqdel); /* acknowledge interrupt */
2525             writeb(0, &dp6_ptr->u.ic.Cmd_Index);/* reset command index */
2526             writeb(0, &dp6_ptr->io.Sema1);     /* reset status semaphore */
2527         } else if (ha->type == GDT_PCINEW) {
2528             if (IStatus & 0x80) {                       /* error flag */
2529                 IStatus &= ~0x80;
2530                 ha->status = inw(PTR2USHORT(&ha->plx->status));
2531                 TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
2532             } else
2533                 ha->status = S_OK;
2534             ha->info = inl(PTR2USHORT(&ha->plx->info[0]));
2535             ha->service = inw(PTR2USHORT(&ha->plx->service));
2536             ha->info2 = inl(PTR2USHORT(&ha->plx->info[1]));
2537
2538             outb(0xff, PTR2USHORT(&ha->plx->edoor_reg));
2539             outb(0x00, PTR2USHORT(&ha->plx->sema1_reg));
2540         } else if (ha->type == GDT_PCIMPR) {
2541             dp6m_ptr = ha->brd;
2542             if (IStatus & 0x80) {                       /* error flag */
2543                 IStatus &= ~0x80;
2544                 ha->status = readw(&dp6m_ptr->i960r.status);
2545                 TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
2546             } else                                      /* no error */
2547                 ha->status = S_OK;
2548
2549             ha->info = readl(&dp6m_ptr->i960r.info[0]);
2550             ha->service = readw(&dp6m_ptr->i960r.service);
2551             ha->info2 = readl(&dp6m_ptr->i960r.info[1]);
2552
2553             /* event string */
2554             if (IStatus == ASYNCINDEX) {
2555                 if (ha->service != SCREENSERVICE &&
2556                     (ha->fw_vers & 0xff) >= 0x1a) {
2557                     ha->dvr.severity = readb
2558                         (&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.severity);
2559                     for (i = 0; i < 256; ++i) {
2560                         ha->dvr.event_string[i] = readb
2561                             (&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.evt_str[i]);
2562                         if (ha->dvr.event_string[i] == 0)
2563                             break;
2564                     }
2565                 }
2566             }
2567             writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
2568             writeb(0, &dp6m_ptr->i960r.sema1_reg);
2569         } else {
2570             TRACE2(("gdth_interrupt() unknown controller type\n"));
2571             if (!gdth_polling)
2572                 spin_unlock_irqrestore(&ha->smp_lock, flags);
2573             return IRQ_HANDLED;
2574         }
2575
2576         TRACE(("gdth_interrupt() index %d stat %d info %d\n",
2577                IStatus,ha->status,ha->info));
2578
2579         if (gdth_from_wait) {
2580             *pIndex = (int)IStatus;
2581         }
2582
2583         if (IStatus == ASYNCINDEX) {
2584             TRACE2(("gdth_interrupt() async. event\n"));
2585             gdth_async_event(ha);
2586             if (!gdth_polling)
2587                 spin_unlock_irqrestore(&ha->smp_lock, flags);
2588             gdth_next(ha);
2589             return IRQ_HANDLED;
2590         }
2591
2592         if (IStatus == SPEZINDEX) {
2593             TRACE2(("Service unknown or not initialized !\n"));
2594             ha->dvr.size = sizeof(ha->dvr.eu.driver);
2595             ha->dvr.eu.driver.ionode = ha->hanum;
2596             gdth_store_event(ha, ES_DRIVER, 4, &ha->dvr);
2597             if (!gdth_polling)
2598                 spin_unlock_irqrestore(&ha->smp_lock, flags);
2599             return IRQ_HANDLED;
2600         }
2601         scp     = ha->cmd_tab[IStatus-2].cmnd;
2602         Service = ha->cmd_tab[IStatus-2].service;
2603         ha->cmd_tab[IStatus-2].cmnd = UNUSED_CMND;
2604         if (scp == UNUSED_CMND) {
2605             TRACE2(("gdth_interrupt() index to unused command (%d)\n",IStatus));
2606             ha->dvr.size = sizeof(ha->dvr.eu.driver);
2607             ha->dvr.eu.driver.ionode = ha->hanum;
2608             ha->dvr.eu.driver.index = IStatus;
2609             gdth_store_event(ha, ES_DRIVER, 1, &ha->dvr);
2610             if (!gdth_polling)
2611                 spin_unlock_irqrestore(&ha->smp_lock, flags);
2612             return IRQ_HANDLED;
2613         }
2614         if (scp == INTERNAL_CMND) {
2615             TRACE(("gdth_interrupt() answer to internal command\n"));
2616             if (!gdth_polling)
2617                 spin_unlock_irqrestore(&ha->smp_lock, flags);
2618             return IRQ_HANDLED;
2619         }
2620
2621         TRACE(("gdth_interrupt() sync. status\n"));
2622         rval = gdth_sync_event(ha,Service,IStatus,scp);
2623         if (!gdth_polling)
2624             spin_unlock_irqrestore(&ha->smp_lock, flags);
2625         if (rval == 2) {
2626             gdth_putq(ha, scp, gdth_cmnd_priv(scp)->priority);
2627         } else if (rval == 1) {
2628             gdth_scsi_done(scp);
2629         }
2630
2631     gdth_next(ha);
2632     return IRQ_HANDLED;
2633 }
2634
2635 static irqreturn_t gdth_interrupt(int irq, void *dev_id)
2636 {
2637         gdth_ha_str *ha = dev_id;
2638
2639         return __gdth_interrupt(ha, false, NULL);
2640 }
2641
2642 static int gdth_sync_event(gdth_ha_str *ha, int service, u8 index,
2643                                                               struct scsi_cmnd *scp)
2644 {
2645     gdth_msg_str *msg;
2646     gdth_cmd_str *cmdp;
2647     u8 b, t;
2648     struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
2649
2650     cmdp = ha->pccb;
2651     TRACE(("gdth_sync_event() serv %d status %d\n",
2652            service,ha->status));
2653
2654     if (service == SCREENSERVICE) {
2655         msg  = ha->pmsg;
2656         TRACE(("len: %d, answer: %d, ext: %d, alen: %d\n",
2657                msg->msg_len,msg->msg_answer,msg->msg_ext,msg->msg_alen));
2658         if (msg->msg_len > MSGLEN+1)
2659             msg->msg_len = MSGLEN+1;
2660         if (msg->msg_len)
2661             if (!(msg->msg_answer && msg->msg_ext)) {
2662                 msg->msg_text[msg->msg_len] = '\0';
2663                 printk("%s",msg->msg_text);
2664             }
2665
2666         if (msg->msg_ext && !msg->msg_answer) {
2667             while (gdth_test_busy(ha))
2668                 gdth_delay(0);
2669             cmdp->Service       = SCREENSERVICE;
2670             cmdp->RequestBuffer = SCREEN_CMND;
2671             gdth_get_cmd_index(ha);
2672             gdth_set_sema0(ha);
2673             cmdp->OpCode        = GDT_READ;
2674             cmdp->BoardNode     = LOCALBOARD;
2675             cmdp->u.screen.reserved  = 0;
2676             cmdp->u.screen.su.msg.msg_handle= msg->msg_handle;
2677             cmdp->u.screen.su.msg.msg_addr  = ha->msg_phys;
2678             ha->cmd_offs_dpmem = 0;
2679             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.screen.su.msg.msg_addr)
2680                 + sizeof(u64);
2681             ha->cmd_cnt = 0;
2682             gdth_copy_command(ha);
2683             gdth_release_event(ha);
2684             return 0;
2685         }
2686
2687         if (msg->msg_answer && msg->msg_alen) {
2688             /* default answers (getchar() not possible) */
2689             if (msg->msg_alen == 1) {
2690                 msg->msg_alen = 0;
2691                 msg->msg_len = 1;
2692                 msg->msg_text[0] = 0;
2693             } else {
2694                 msg->msg_alen -= 2;
2695                 msg->msg_len = 2;
2696                 msg->msg_text[0] = 1;
2697                 msg->msg_text[1] = 0;
2698             }
2699             msg->msg_ext    = 0;
2700             msg->msg_answer = 0;
2701             while (gdth_test_busy(ha))
2702                 gdth_delay(0);
2703             cmdp->Service       = SCREENSERVICE;
2704             cmdp->RequestBuffer = SCREEN_CMND;
2705             gdth_get_cmd_index(ha);
2706             gdth_set_sema0(ha);
2707             cmdp->OpCode        = GDT_WRITE;
2708             cmdp->BoardNode     = LOCALBOARD;
2709             cmdp->u.screen.reserved  = 0;
2710             cmdp->u.screen.su.msg.msg_handle= msg->msg_handle;
2711             cmdp->u.screen.su.msg.msg_addr  = ha->msg_phys;
2712             ha->cmd_offs_dpmem = 0;
2713             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.screen.su.msg.msg_addr)
2714                 + sizeof(u64);
2715             ha->cmd_cnt = 0;
2716             gdth_copy_command(ha);
2717             gdth_release_event(ha);
2718             return 0;
2719         }
2720         printk("\n");
2721
2722     } else {
2723         b = scp->device->channel;
2724         t = scp->device->id;
2725         if (cmndinfo->OpCode == -1 && b != ha->virt_bus) {
2726             ha->raw[BUS_L2P(ha,b)].io_cnt[t]--;
2727         }
2728         /* cache or raw service */
2729         if (ha->status == S_BSY) {
2730             TRACE2(("Controller busy -> retry !\n"));
2731             if (cmndinfo->OpCode == GDT_MOUNT)
2732                 cmndinfo->OpCode = GDT_CLUST_INFO;
2733             /* retry */
2734             return 2;
2735         }
2736         if (scsi_bufflen(scp))
2737             dma_unmap_sg(&ha->pdev->dev, scsi_sglist(scp), scsi_sg_count(scp),
2738                          cmndinfo->dma_dir);
2739
2740         if (cmndinfo->sense_paddr)
2741             dma_unmap_page(&ha->pdev->dev, cmndinfo->sense_paddr, 16,
2742                            DMA_FROM_DEVICE);
2743
2744         if (ha->status == S_OK) {
2745             cmndinfo->status = S_OK;
2746             cmndinfo->info = ha->info;
2747             if (cmndinfo->OpCode != -1) {
2748                 TRACE2(("gdth_sync_event(): special cmd 0x%x OK\n",
2749                         cmndinfo->OpCode));
2750                 /* special commands GDT_CLUST_INFO/GDT_MOUNT ? */
2751                 if (cmndinfo->OpCode == GDT_CLUST_INFO) {
2752                     ha->hdr[t].cluster_type = (u8)ha->info;
2753                     if (!(ha->hdr[t].cluster_type &
2754                         CLUSTER_MOUNTED)) {
2755                         /* NOT MOUNTED -> MOUNT */
2756                         cmndinfo->OpCode = GDT_MOUNT;
2757                         if (ha->hdr[t].cluster_type &
2758                             CLUSTER_RESERVED) {
2759                             /* cluster drive RESERVED (on the other node) */
2760                             cmndinfo->phase = -2;      /* reservation conflict */
2761                         }
2762                     } else {
2763                         cmndinfo->OpCode = -1;
2764                     }
2765                 } else {
2766                     if (cmndinfo->OpCode == GDT_MOUNT) {
2767                         ha->hdr[t].cluster_type |= CLUSTER_MOUNTED;
2768                         ha->hdr[t].media_changed = TRUE;
2769                     } else if (cmndinfo->OpCode == GDT_UNMOUNT) {
2770                         ha->hdr[t].cluster_type &= ~CLUSTER_MOUNTED;
2771                         ha->hdr[t].media_changed = TRUE;
2772                     }
2773                     cmndinfo->OpCode = -1;
2774                 }
2775                 /* retry */
2776                 cmndinfo->priority = HIGH_PRI;
2777                 return 2;
2778             } else {
2779                 /* RESERVE/RELEASE ? */
2780                 if (scp->cmnd[0] == RESERVE) {
2781                     ha->hdr[t].cluster_type |= CLUSTER_RESERVED;
2782                 } else if (scp->cmnd[0] == RELEASE) {
2783                     ha->hdr[t].cluster_type &= ~CLUSTER_RESERVED;
2784                 }
2785                 scp->result = DID_OK << 16;
2786                 scp->sense_buffer[0] = 0;
2787             }
2788         } else {
2789             cmndinfo->status = ha->status;
2790             cmndinfo->info = ha->info;
2791
2792             if (cmndinfo->OpCode != -1) {
2793                 TRACE2(("gdth_sync_event(): special cmd 0x%x error 0x%x\n",
2794                         cmndinfo->OpCode, ha->status));
2795                 if (cmndinfo->OpCode == GDT_SCAN_START ||
2796                     cmndinfo->OpCode == GDT_SCAN_END) {
2797                     cmndinfo->OpCode = -1;
2798                     /* retry */
2799                     cmndinfo->priority = HIGH_PRI;
2800                     return 2;
2801                 }
2802                 memset((char*)scp->sense_buffer,0,16);
2803                 scp->sense_buffer[0] = 0x70;
2804                 scp->sense_buffer[2] = NOT_READY;
2805                 scp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
2806             } else if (service == CACHESERVICE) {
2807                 if (ha->status == S_CACHE_UNKNOWN &&
2808                     (ha->hdr[t].cluster_type &
2809                      CLUSTER_RESERVE_STATE) == CLUSTER_RESERVE_STATE) {
2810                     /* bus reset -> force GDT_CLUST_INFO */
2811                     ha->hdr[t].cluster_type &= ~CLUSTER_RESERVED;
2812                 }
2813                 memset((char*)scp->sense_buffer,0,16);
2814                 if (ha->status == (u16)S_CACHE_RESERV) {
2815                     scp->result = (DID_OK << 16) | (RESERVATION_CONFLICT << 1);
2816                 } else {
2817                     scp->sense_buffer[0] = 0x70;
2818                     scp->sense_buffer[2] = NOT_READY;
2819                     scp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
2820                 }
2821                 if (!cmndinfo->internal_command) {
2822                     ha->dvr.size = sizeof(ha->dvr.eu.sync);
2823                     ha->dvr.eu.sync.ionode  = ha->hanum;
2824                     ha->dvr.eu.sync.service = service;
2825                     ha->dvr.eu.sync.status  = ha->status;
2826                     ha->dvr.eu.sync.info    = ha->info;
2827                     ha->dvr.eu.sync.hostdrive = t;
2828                     if (ha->status >= 0x8000)
2829                         gdth_store_event(ha, ES_SYNC, 0, &ha->dvr);
2830                     else
2831                         gdth_store_event(ha, ES_SYNC, service, &ha->dvr);
2832                 }
2833             } else {
2834                 /* sense buffer filled from controller firmware (DMA) */
2835                 if (ha->status != S_RAW_SCSI || ha->info >= 0x100) {
2836                     scp->result = DID_BAD_TARGET << 16;
2837                 } else {
2838                     scp->result = (DID_OK << 16) | ha->info;
2839                 }
2840             }
2841         }
2842         if (!cmndinfo->wait_for_completion)
2843             cmndinfo->wait_for_completion++;
2844         else
2845             return 1;
2846     }
2847
2848     return 0;
2849 }
2850
2851 static char *async_cache_tab[] = {
2852 /* 0*/  "\011\000\002\002\002\004\002\006\004"
2853         "GDT HA %u, service %u, async. status %u/%lu unknown",
2854 /* 1*/  "\011\000\002\002\002\004\002\006\004"
2855         "GDT HA %u, service %u, async. status %u/%lu unknown",
2856 /* 2*/  "\005\000\002\006\004"
2857         "GDT HA %u, Host Drive %lu not ready",
2858 /* 3*/  "\005\000\002\006\004"
2859         "GDT HA %u, Host Drive %lu: REASSIGN not successful and/or data error on reassigned blocks. Drive may crash in the future and should be replaced",
2860 /* 4*/  "\005\000\002\006\004"
2861         "GDT HA %u, mirror update on Host Drive %lu failed",
2862 /* 5*/  "\005\000\002\006\004"
2863         "GDT HA %u, Mirror Drive %lu failed",
2864 /* 6*/  "\005\000\002\006\004"
2865         "GDT HA %u, Mirror Drive %lu: REASSIGN not successful and/or data error on reassigned blocks. Drive may crash in the future and should be replaced",
2866 /* 7*/  "\005\000\002\006\004"
2867         "GDT HA %u, Host Drive %lu write protected",
2868 /* 8*/  "\005\000\002\006\004"
2869         "GDT HA %u, media changed in Host Drive %lu",
2870 /* 9*/  "\005\000\002\006\004"
2871         "GDT HA %u, Host Drive %lu is offline",
2872 /*10*/  "\005\000\002\006\004"
2873         "GDT HA %u, media change of Mirror Drive %lu",
2874 /*11*/  "\005\000\002\006\004"
2875         "GDT HA %u, Mirror Drive %lu is write protected",
2876 /*12*/  "\005\000\002\006\004"
2877         "GDT HA %u, general error on Host Drive %lu. Please check the devices of this drive!",
2878 /*13*/  "\007\000\002\006\002\010\002"
2879         "GDT HA %u, Array Drive %u: Cache Drive %u failed",
2880 /*14*/  "\005\000\002\006\002"
2881         "GDT HA %u, Array Drive %u: FAIL state entered",
2882 /*15*/  "\005\000\002\006\002"
2883         "GDT HA %u, Array Drive %u: error",
2884 /*16*/  "\007\000\002\006\002\010\002"
2885         "GDT HA %u, Array Drive %u: failed drive replaced by Cache Drive %u",
2886 /*17*/  "\005\000\002\006\002"
2887         "GDT HA %u, Array Drive %u: parity build failed",
2888 /*18*/  "\005\000\002\006\002"
2889         "GDT HA %u, Array Drive %u: drive rebuild failed",
2890 /*19*/  "\005\000\002\010\002"
2891         "GDT HA %u, Test of Hot Fix %u failed",
2892 /*20*/  "\005\000\002\006\002"
2893         "GDT HA %u, Array Drive %u: drive build finished successfully",
2894 /*21*/  "\005\000\002\006\002"
2895         "GDT HA %u, Array Drive %u: drive rebuild finished successfully",
2896 /*22*/  "\007\000\002\006\002\010\002"
2897         "GDT HA %u, Array Drive %u: Hot Fix %u activated",
2898 /*23*/  "\005\000\002\006\002"
2899         "GDT HA %u, Host Drive %u: processing of i/o aborted due to serious drive error",
2900 /*24*/  "\005\000\002\010\002"
2901         "GDT HA %u, mirror update on Cache Drive %u completed",
2902 /*25*/  "\005\000\002\010\002"
2903         "GDT HA %u, mirror update on Cache Drive %lu failed",
2904 /*26*/  "\005\000\002\006\002"
2905         "GDT HA %u, Array Drive %u: drive rebuild started",
2906 /*27*/  "\005\000\002\012\001"
2907         "GDT HA %u, Fault bus %u: SHELF OK detected",
2908 /*28*/  "\005\000\002\012\001"
2909         "GDT HA %u, Fault bus %u: SHELF not OK detected",
2910 /*29*/  "\007\000\002\012\001\013\001"
2911         "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug started",
2912 /*30*/  "\007\000\002\012\001\013\001"
2913         "GDT HA %u, Fault bus %u, ID %u: new disk detected",
2914 /*31*/  "\007\000\002\012\001\013\001"
2915         "GDT HA %u, Fault bus %u, ID %u: old disk detected",
2916 /*32*/  "\007\000\002\012\001\013\001"
2917         "GDT HA %u, Fault bus %u, ID %u: plugging an active disk is invalid",
2918 /*33*/  "\007\000\002\012\001\013\001"
2919         "GDT HA %u, Fault bus %u, ID %u: invalid device detected",
2920 /*34*/  "\011\000\002\012\001\013\001\006\004"
2921         "GDT HA %u, Fault bus %u, ID %u: insufficient disk capacity (%lu MB required)",
2922 /*35*/  "\007\000\002\012\001\013\001"
2923         "GDT HA %u, Fault bus %u, ID %u: disk write protected",
2924 /*36*/  "\007\000\002\012\001\013\001"
2925         "GDT HA %u, Fault bus %u, ID %u: disk not available",
2926 /*37*/  "\007\000\002\012\001\006\004"
2927         "GDT HA %u, Fault bus %u: swap detected (%lu)",
2928 /*38*/  "\007\000\002\012\001\013\001"
2929         "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug finished successfully",
2930 /*39*/  "\007\000\002\012\001\013\001"
2931         "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug aborted due to user Hot Plug",
2932 /*40*/  "\007\000\002\012\001\013\001"
2933         "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug aborted",
2934 /*41*/  "\007\000\002\012\001\013\001"
2935         "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug for Hot Fix started",
2936 /*42*/  "\005\000\002\006\002"
2937         "GDT HA %u, Array Drive %u: drive build started",
2938 /*43*/  "\003\000\002"
2939         "GDT HA %u, DRAM parity error detected",
2940 /*44*/  "\005\000\002\006\002"
2941         "GDT HA %u, Mirror Drive %u: update started",
2942 /*45*/  "\007\000\002\006\002\010\002"
2943         "GDT HA %u, Mirror Drive %u: Hot Fix %u activated",
2944 /*46*/  "\005\000\002\006\002"
2945         "GDT HA %u, Array Drive %u: no matching Pool Hot Fix Drive available",
2946 /*47*/  "\005\000\002\006\002"
2947         "GDT HA %u, Array Drive %u: Pool Hot Fix Drive available",
2948 /*48*/  "\005\000\002\006\002"
2949         "GDT HA %u, Mirror Drive %u: no matching Pool Hot Fix Drive available",
2950 /*49*/  "\005\000\002\006\002"
2951         "GDT HA %u, Mirror Drive %u: Pool Hot Fix Drive available",
2952 /*50*/  "\007\000\002\012\001\013\001"
2953         "GDT HA %u, SCSI bus %u, ID %u: IGNORE_WIDE_RESIDUE message received",
2954 /*51*/  "\005\000\002\006\002"
2955         "GDT HA %u, Array Drive %u: expand started",
2956 /*52*/  "\005\000\002\006\002"
2957         "GDT HA %u, Array Drive %u: expand finished successfully",
2958 /*53*/  "\005\000\002\006\002"
2959         "GDT HA %u, Array Drive %u: expand failed",
2960 /*54*/  "\003\000\002"
2961         "GDT HA %u, CPU temperature critical",
2962 /*55*/  "\003\000\002"
2963         "GDT HA %u, CPU temperature OK",
2964 /*56*/  "\005\000\002\006\004"
2965         "GDT HA %u, Host drive %lu created",
2966 /*57*/  "\005\000\002\006\002"
2967         "GDT HA %u, Array Drive %u: expand restarted",
2968 /*58*/  "\005\000\002\006\002"
2969         "GDT HA %u, Array Drive %u: expand stopped",
2970 /*59*/  "\005\000\002\010\002"
2971         "GDT HA %u, Mirror Drive %u: drive build quited",
2972 /*60*/  "\005\000\002\006\002"
2973         "GDT HA %u, Array Drive %u: parity build quited",
2974 /*61*/  "\005\000\002\006\002"
2975         "GDT HA %u, Array Drive %u: drive rebuild quited",
2976 /*62*/  "\005\000\002\006\002"
2977         "GDT HA %u, Array Drive %u: parity verify started",
2978 /*63*/  "\005\000\002\006\002"
2979         "GDT HA %u, Array Drive %u: parity verify done",
2980 /*64*/  "\005\000\002\006\002"
2981         "GDT HA %u, Array Drive %u: parity verify failed",
2982 /*65*/  "\005\000\002\006\002"
2983         "GDT HA %u, Array Drive %u: parity error detected",
2984 /*66*/  "\005\000\002\006\002"
2985         "GDT HA %u, Array Drive %u: parity verify quited",
2986 /*67*/  "\005\000\002\006\002"
2987         "GDT HA %u, Host Drive %u reserved",
2988 /*68*/  "\005\000\002\006\002"
2989         "GDT HA %u, Host Drive %u mounted and released",
2990 /*69*/  "\005\000\002\006\002"
2991         "GDT HA %u, Host Drive %u released",
2992 /*70*/  "\003\000\002"
2993         "GDT HA %u, DRAM error detected and corrected with ECC",
2994 /*71*/  "\003\000\002"
2995         "GDT HA %u, Uncorrectable DRAM error detected with ECC",
2996 /*72*/  "\011\000\002\012\001\013\001\014\001"
2997         "GDT HA %u, SCSI bus %u, ID %u, LUN %u: reassigning block",
2998 /*73*/  "\005\000\002\006\002"
2999         "GDT HA %u, Host drive %u resetted locally",
3000 /*74*/  "\005\000\002\006\002"
3001         "GDT HA %u, Host drive %u resetted remotely",
3002 /*75*/  "\003\000\002"
3003         "GDT HA %u, async. status 75 unknown",
3004 };
3005
3006
3007 static int gdth_async_event(gdth_ha_str *ha)
3008 {
3009     gdth_cmd_str *cmdp;
3010
3011     cmdp= ha->pccb;
3012     TRACE2(("gdth_async_event() ha %d serv %d\n",
3013             ha->hanum, ha->service));
3014
3015     if (ha->service == SCREENSERVICE) {
3016         if (ha->status == MSG_REQUEST) {
3017             while (gdth_test_busy(ha))
3018                 gdth_delay(0);
3019             cmdp->Service       = SCREENSERVICE;
3020             cmdp->RequestBuffer = SCREEN_CMND;
3021             gdth_set_sema0(ha);
3022             cmdp->OpCode        = GDT_READ;
3023             cmdp->BoardNode     = LOCALBOARD;
3024             cmdp->u.screen.reserved  = 0;
3025             cmdp->u.screen.su.msg.msg_handle= MSG_INV_HANDLE;
3026             cmdp->u.screen.su.msg.msg_addr  = ha->msg_phys;
3027             ha->cmd_offs_dpmem = 0;
3028             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.screen.su.msg.msg_addr)
3029                 + sizeof(u64);
3030             ha->cmd_cnt = 0;
3031             gdth_copy_command(ha);
3032             printk("[PCI %d/%d] ",(u16)(ha->brd_phys>>8),
3033                        (u16)((ha->brd_phys>>3)&0x1f));
3034             gdth_release_event(ha);
3035         }
3036
3037     } else {
3038         if (ha->type == GDT_PCIMPR &&
3039             (ha->fw_vers & 0xff) >= 0x1a) {
3040             ha->dvr.size = 0;
3041             ha->dvr.eu.async.ionode = ha->hanum;
3042             ha->dvr.eu.async.status  = ha->status;
3043             /* severity and event_string already set! */
3044         } else {
3045             ha->dvr.size = sizeof(ha->dvr.eu.async);
3046             ha->dvr.eu.async.ionode   = ha->hanum;
3047             ha->dvr.eu.async.service = ha->service;
3048             ha->dvr.eu.async.status  = ha->status;
3049             ha->dvr.eu.async.info    = ha->info;
3050             *(u32 *)ha->dvr.eu.async.scsi_coord  = ha->info2;
3051         }
3052         gdth_store_event( ha, ES_ASYNC, ha->service, &ha->dvr );
3053         gdth_log_event( &ha->dvr, NULL );
3054
3055         /* new host drive from expand? */
3056         if (ha->service == CACHESERVICE && ha->status == 56) {
3057             TRACE2(("gdth_async_event(): new host drive %d created\n",
3058                     (u16)ha->info));
3059             /* gdth_analyse_hdrive(hanum, (u16)ha->info); */
3060         }
3061     }
3062     return 1;
3063 }
3064
3065 static void gdth_log_event(gdth_evt_data *dvr, char *buffer)
3066 {
3067     gdth_stackframe stack;
3068     char *f = NULL;
3069     int i,j;
3070
3071     TRACE2(("gdth_log_event()\n"));
3072     if (dvr->size == 0) {
3073         if (buffer == NULL) {
3074             printk("Adapter %d: %s\n",dvr->eu.async.ionode,dvr->event_string);
3075         } else {
3076             sprintf(buffer,"Adapter %d: %s\n",
3077                 dvr->eu.async.ionode,dvr->event_string);
3078         }
3079     } else if (dvr->eu.async.service == CACHESERVICE &&
3080         INDEX_OK(dvr->eu.async.status, async_cache_tab)) {
3081         TRACE2(("GDT: Async. event cache service, event no.: %d\n",
3082                 dvr->eu.async.status));
3083
3084         f = async_cache_tab[dvr->eu.async.status];
3085
3086         /* i: parameter to push, j: stack element to fill */
3087         for (j=0,i=1; i < f[0]; i+=2) {
3088             switch (f[i+1]) {
3089               case 4:
3090                 stack.b[j++] = *(u32*)&dvr->eu.stream[(int)f[i]];
3091                 break;
3092               case 2:
3093                 stack.b[j++] = *(u16*)&dvr->eu.stream[(int)f[i]];
3094                 break;
3095               case 1:
3096                 stack.b[j++] = *(u8*)&dvr->eu.stream[(int)f[i]];
3097                 break;
3098               default:
3099                 break;
3100             }
3101         }
3102
3103         if (buffer == NULL) {
3104             printk(&f[(int)f[0]],stack);
3105             printk("\n");
3106         } else {
3107             sprintf(buffer,&f[(int)f[0]],stack);
3108         }
3109
3110     } else {
3111         if (buffer == NULL) {
3112             printk("GDT HA %u, Unknown async. event service %d event no. %d\n",
3113                    dvr->eu.async.ionode,dvr->eu.async.service,dvr->eu.async.status);
3114         } else {
3115             sprintf(buffer,"GDT HA %u, Unknown async. event service %d event no. %d",
3116                     dvr->eu.async.ionode,dvr->eu.async.service,dvr->eu.async.status);
3117         }
3118     }
3119 }
3120
3121 #ifdef GDTH_STATISTICS
3122 static u8       gdth_timer_running;
3123
3124 static void gdth_timeout(struct timer_list *unused)
3125 {
3126     u32 i;
3127     struct scsi_cmnd *nscp;
3128     gdth_ha_str *ha;
3129     unsigned long flags;
3130
3131     if(unlikely(list_empty(&gdth_instances))) {
3132             gdth_timer_running = 0;
3133             return;
3134     }
3135
3136     ha = list_first_entry(&gdth_instances, gdth_ha_str, list);
3137     spin_lock_irqsave(&ha->smp_lock, flags);
3138
3139     for (act_stats=0,i=0; i<GDTH_MAXCMDS; ++i)
3140         if (ha->cmd_tab[i].cmnd != UNUSED_CMND)
3141             ++act_stats;
3142
3143     for (act_rq=0,
3144          nscp=ha->req_first; nscp; nscp=(struct scsi_cmnd*)nscp->SCp.ptr)
3145         ++act_rq;
3146
3147     TRACE2(("gdth_to(): ints %d, ios %d, act_stats %d, act_rq %d\n",
3148             act_ints, act_ios, act_stats, act_rq));
3149     act_ints = act_ios = 0;
3150
3151     gdth_timer.expires = jiffies + 30 * HZ;
3152     add_timer(&gdth_timer);
3153     spin_unlock_irqrestore(&ha->smp_lock, flags);
3154 }
3155
3156 static void gdth_timer_init(void)
3157 {
3158         if (gdth_timer_running)
3159                 return;
3160         gdth_timer_running = 1;
3161         TRACE2(("gdth_detect(): Initializing timer !\n"));
3162         gdth_timer.expires = jiffies + HZ;
3163         add_timer(&gdth_timer);
3164 }
3165 #else
3166 static inline void gdth_timer_init(void)
3167 {
3168 }
3169 #endif
3170
3171
3172 static const char *gdth_ctr_name(gdth_ha_str *ha)
3173 {
3174     TRACE2(("gdth_ctr_name()\n"));
3175
3176     if (ha->type == GDT_PCI) {
3177         switch (ha->pdev->device) {
3178           case PCI_DEVICE_ID_VORTEX_GDT60x0:
3179             return("GDT6000/6020/6050");
3180           case PCI_DEVICE_ID_VORTEX_GDT6000B:
3181             return("GDT6000B/6010");
3182         }
3183     }
3184     /* new controllers (GDT_PCINEW, GDT_PCIMPR, ..) use board_info IOCTL! */
3185
3186     return("");
3187 }
3188
3189 static const char *gdth_info(struct Scsi_Host *shp)
3190 {
3191     gdth_ha_str *ha = shost_priv(shp);
3192
3193     TRACE2(("gdth_info()\n"));
3194     return ((const char *)ha->binfo.type_string);
3195 }
3196
3197 static enum blk_eh_timer_return gdth_timed_out(struct scsi_cmnd *scp)
3198 {
3199         gdth_ha_str *ha = shost_priv(scp->device->host);
3200         struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
3201         u8 b, t;
3202         unsigned long flags;
3203         enum blk_eh_timer_return retval = BLK_EH_DONE;
3204
3205         TRACE(("%s() cmd 0x%x\n", scp->cmnd[0], __func__));
3206         b = scp->device->channel;
3207         t = scp->device->id;
3208
3209         /*
3210          * We don't really honor the command timeout, but we try to
3211          * honor 6 times of the actual command timeout! So reset the
3212          * timer if this is less than 6th timeout on this command!
3213          */
3214         if (++cmndinfo->timeout_count < 6)
3215                 retval = BLK_EH_RESET_TIMER;
3216
3217         /* Reset the timeout if it is locked IO */
3218         spin_lock_irqsave(&ha->smp_lock, flags);
3219         if ((b != ha->virt_bus && ha->raw[BUS_L2P(ha, b)].lock) ||
3220             (b == ha->virt_bus && t < MAX_HDRIVES && ha->hdr[t].lock)) {
3221                 TRACE2(("%s(): locked IO, reset timeout\n", __func__));
3222                 retval = BLK_EH_RESET_TIMER;
3223         }
3224         spin_unlock_irqrestore(&ha->smp_lock, flags);
3225
3226         return retval;
3227 }
3228
3229
3230 static int gdth_eh_bus_reset(struct scsi_cmnd *scp)
3231 {
3232     gdth_ha_str *ha = shost_priv(scp->device->host);
3233     int i;
3234     unsigned long flags;
3235     struct scsi_cmnd *cmnd;
3236     u8 b;
3237
3238     TRACE2(("gdth_eh_bus_reset()\n"));
3239
3240     b = scp->device->channel;
3241
3242     /* clear command tab */
3243     spin_lock_irqsave(&ha->smp_lock, flags);
3244     for (i = 0; i < GDTH_MAXCMDS; ++i) {
3245         cmnd = ha->cmd_tab[i].cmnd;
3246         if (!SPECIAL_SCP(cmnd) && cmnd->device->channel == b)
3247             ha->cmd_tab[i].cmnd = UNUSED_CMND;
3248     }
3249     spin_unlock_irqrestore(&ha->smp_lock, flags);
3250
3251     if (b == ha->virt_bus) {
3252         /* host drives */
3253         for (i = 0; i < MAX_HDRIVES; ++i) {
3254             if (ha->hdr[i].present) {
3255                 spin_lock_irqsave(&ha->smp_lock, flags);
3256                 gdth_polling = TRUE;
3257                 while (gdth_test_busy(ha))
3258                     gdth_delay(0);
3259                 if (gdth_internal_cmd(ha, CACHESERVICE,
3260                                       GDT_CLUST_RESET, i, 0, 0))
3261                     ha->hdr[i].cluster_type &= ~CLUSTER_RESERVED;
3262                 gdth_polling = FALSE;
3263                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3264             }
3265         }
3266     } else {
3267         /* raw devices */
3268         spin_lock_irqsave(&ha->smp_lock, flags);
3269         for (i = 0; i < MAXID; ++i)
3270             ha->raw[BUS_L2P(ha,b)].io_cnt[i] = 0;
3271         gdth_polling = TRUE;
3272         while (gdth_test_busy(ha))
3273             gdth_delay(0);
3274         gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_RESET_BUS,
3275                           BUS_L2P(ha,b), 0, 0);
3276         gdth_polling = FALSE;
3277         spin_unlock_irqrestore(&ha->smp_lock, flags);
3278     }
3279     return SUCCESS;
3280 }
3281
3282 static int gdth_bios_param(struct scsi_device *sdev,struct block_device *bdev,sector_t cap,int *ip)
3283 {
3284     u8 b, t;
3285     gdth_ha_str *ha = shost_priv(sdev->host);
3286     struct scsi_device *sd;
3287     unsigned capacity;
3288
3289     sd = sdev;
3290     capacity = cap;
3291     b = sd->channel;
3292     t = sd->id;
3293     TRACE2(("gdth_bios_param() ha %d bus %d target %d\n", ha->hanum, b, t));
3294
3295     if (b != ha->virt_bus || ha->hdr[t].heads == 0) {
3296         /* raw device or host drive without mapping information */
3297         TRACE2(("Evaluate mapping\n"));
3298         gdth_eval_mapping(capacity,&ip[2],&ip[0],&ip[1]);
3299     } else {
3300         ip[0] = ha->hdr[t].heads;
3301         ip[1] = ha->hdr[t].secs;
3302         ip[2] = capacity / ip[0] / ip[1];
3303     }
3304
3305     TRACE2(("gdth_bios_param(): %d heads, %d secs, %d cyls\n",
3306             ip[0],ip[1],ip[2]));
3307     return 0;
3308 }
3309
3310
3311 static int gdth_queuecommand_lck(struct scsi_cmnd *scp,
3312                                 void (*done)(struct scsi_cmnd *))
3313 {
3314     gdth_ha_str *ha = shost_priv(scp->device->host);
3315     struct gdth_cmndinfo *cmndinfo;
3316
3317     TRACE(("gdth_queuecommand() cmd 0x%x\n", scp->cmnd[0]));
3318
3319     cmndinfo = gdth_get_cmndinfo(ha);
3320     BUG_ON(!cmndinfo);
3321
3322     scp->scsi_done = done;
3323     cmndinfo->timeout_count = 0;
3324     cmndinfo->priority = DEFAULT_PRI;
3325
3326     return __gdth_queuecommand(ha, scp, cmndinfo);
3327 }
3328
3329 static DEF_SCSI_QCMD(gdth_queuecommand)
3330
3331 static int __gdth_queuecommand(gdth_ha_str *ha, struct scsi_cmnd *scp,
3332                                 struct gdth_cmndinfo *cmndinfo)
3333 {
3334     scp->host_scribble = (unsigned char *)cmndinfo;
3335     cmndinfo->wait_for_completion = 1;
3336     cmndinfo->phase = -1;
3337     cmndinfo->OpCode = -1;
3338
3339 #ifdef GDTH_STATISTICS
3340     ++act_ios;
3341 #endif
3342
3343     gdth_putq(ha, scp, cmndinfo->priority);
3344     gdth_next(ha);
3345     return 0;
3346 }
3347
3348
3349 static int gdth_open(struct inode *inode, struct file *filep)
3350 {
3351     gdth_ha_str *ha;
3352
3353     mutex_lock(&gdth_mutex);
3354     list_for_each_entry(ha, &gdth_instances, list) {
3355         if (!ha->sdev)
3356             ha->sdev = scsi_get_host_dev(ha->shost);
3357     }
3358     mutex_unlock(&gdth_mutex);
3359
3360     TRACE(("gdth_open()\n"));
3361     return 0;
3362 }
3363
3364 static int gdth_close(struct inode *inode, struct file *filep)
3365 {
3366     TRACE(("gdth_close()\n"));
3367     return 0;
3368 }
3369
3370 static int ioc_event(void __user *arg)
3371 {
3372     gdth_ioctl_event evt;
3373     gdth_ha_str *ha;
3374     unsigned long flags;
3375
3376     if (copy_from_user(&evt, arg, sizeof(gdth_ioctl_event)))
3377         return -EFAULT;
3378     ha = gdth_find_ha(evt.ionode);
3379     if (!ha)
3380         return -EFAULT;
3381
3382     if (evt.erase == 0xff) {
3383         if (evt.event.event_source == ES_TEST)
3384             evt.event.event_data.size=sizeof(evt.event.event_data.eu.test);
3385         else if (evt.event.event_source == ES_DRIVER)
3386             evt.event.event_data.size=sizeof(evt.event.event_data.eu.driver);
3387         else if (evt.event.event_source == ES_SYNC)
3388             evt.event.event_data.size=sizeof(evt.event.event_data.eu.sync);
3389         else
3390             evt.event.event_data.size=sizeof(evt.event.event_data.eu.async);
3391         spin_lock_irqsave(&ha->smp_lock, flags);
3392         gdth_store_event(ha, evt.event.event_source, evt.event.event_idx,
3393                          &evt.event.event_data);
3394         spin_unlock_irqrestore(&ha->smp_lock, flags);
3395     } else if (evt.erase == 0xfe) {
3396         gdth_clear_events();
3397     } else if (evt.erase == 0) {
3398         evt.handle = gdth_read_event(ha, evt.handle, &evt.event);
3399     } else {
3400         gdth_readapp_event(ha, evt.erase, &evt.event);
3401     }
3402     if (copy_to_user(arg, &evt, sizeof(gdth_ioctl_event)))
3403         return -EFAULT;
3404     return 0;
3405 }
3406
3407 static int ioc_lockdrv(void __user *arg)
3408 {
3409     gdth_ioctl_lockdrv ldrv;
3410     u8 i, j;
3411     unsigned long flags;
3412     gdth_ha_str *ha;
3413
3414     if (copy_from_user(&ldrv, arg, sizeof(gdth_ioctl_lockdrv)))
3415         return -EFAULT;
3416     ha = gdth_find_ha(ldrv.ionode);
3417     if (!ha)
3418         return -EFAULT;
3419
3420     for (i = 0; i < ldrv.drive_cnt && i < MAX_HDRIVES; ++i) {
3421         j = ldrv.drives[i];
3422         if (j >= MAX_HDRIVES || !ha->hdr[j].present)
3423             continue;
3424         if (ldrv.lock) {
3425             spin_lock_irqsave(&ha->smp_lock, flags);
3426             ha->hdr[j].lock = 1;
3427             spin_unlock_irqrestore(&ha->smp_lock, flags);
3428             gdth_wait_completion(ha, ha->bus_cnt, j);
3429         } else {
3430             spin_lock_irqsave(&ha->smp_lock, flags);
3431             ha->hdr[j].lock = 0;
3432             spin_unlock_irqrestore(&ha->smp_lock, flags);
3433             gdth_next(ha);
3434         }
3435     }
3436     return 0;
3437 }
3438
3439 static int ioc_resetdrv(void __user *arg, char *cmnd)
3440 {
3441     gdth_ioctl_reset res;
3442     gdth_cmd_str cmd;
3443     gdth_ha_str *ha;
3444     int rval;
3445
3446     if (copy_from_user(&res, arg, sizeof(gdth_ioctl_reset)) ||
3447         res.number >= MAX_HDRIVES)
3448         return -EFAULT;
3449     ha = gdth_find_ha(res.ionode);
3450     if (!ha)
3451         return -EFAULT;
3452
3453     if (!ha->hdr[res.number].present)
3454         return 0;
3455     memset(&cmd, 0, sizeof(gdth_cmd_str));
3456     cmd.Service = CACHESERVICE;
3457     cmd.OpCode = GDT_CLUST_RESET;
3458     if (ha->cache_feat & GDT_64BIT)
3459         cmd.u.cache64.DeviceNo = res.number;
3460     else
3461         cmd.u.cache.DeviceNo = res.number;
3462
3463     rval = __gdth_execute(ha->sdev, &cmd, cmnd, 30, NULL);
3464     if (rval < 0)
3465         return rval;
3466     res.status = rval;
3467
3468     if (copy_to_user(arg, &res, sizeof(gdth_ioctl_reset)))
3469         return -EFAULT;
3470     return 0;
3471 }
3472
3473 static void gdth_ioc_cacheservice(gdth_ha_str *ha, gdth_ioctl_general *gen,
3474                 u64 paddr)
3475 {
3476         if (ha->cache_feat & GDT_64BIT) {
3477                 /* copy elements from 32-bit IOCTL structure */
3478                 gen->command.u.cache64.BlockCnt = gen->command.u.cache.BlockCnt;
3479                 gen->command.u.cache64.BlockNo = gen->command.u.cache.BlockNo;
3480                 gen->command.u.cache64.DeviceNo = gen->command.u.cache.DeviceNo;
3481
3482                 if (ha->cache_feat & SCATTER_GATHER) {
3483                         gen->command.u.cache64.DestAddr = (u64)-1;
3484                         gen->command.u.cache64.sg_canz = 1;
3485                         gen->command.u.cache64.sg_lst[0].sg_ptr = paddr;
3486                         gen->command.u.cache64.sg_lst[0].sg_len = gen->data_len;
3487                         gen->command.u.cache64.sg_lst[1].sg_len = 0;
3488                 } else {
3489                         gen->command.u.cache64.DestAddr = paddr;
3490                         gen->command.u.cache64.sg_canz = 0;
3491                 }
3492         } else {
3493                 if (ha->cache_feat & SCATTER_GATHER) {
3494                         gen->command.u.cache.DestAddr = 0xffffffff;
3495                                 gen->command.u.cache.sg_canz = 1;
3496                         gen->command.u.cache.sg_lst[0].sg_ptr = (u32)paddr;
3497                         gen->command.u.cache.sg_lst[0].sg_len = gen->data_len;
3498                         gen->command.u.cache.sg_lst[1].sg_len = 0;
3499                 } else {
3500                         gen->command.u.cache.DestAddr = paddr;
3501                         gen->command.u.cache.sg_canz = 0;
3502                 }
3503         }
3504 }
3505
3506 static void gdth_ioc_scsiraw(gdth_ha_str *ha, gdth_ioctl_general *gen,
3507                 u64 paddr)
3508 {
3509         if (ha->raw_feat & GDT_64BIT) {
3510                 /* copy elements from 32-bit IOCTL structure */
3511                 char cmd[16];
3512
3513                 gen->command.u.raw64.sense_len = gen->command.u.raw.sense_len;
3514                 gen->command.u.raw64.bus = gen->command.u.raw.bus;
3515                 gen->command.u.raw64.lun = gen->command.u.raw.lun;
3516                 gen->command.u.raw64.target = gen->command.u.raw.target;
3517                 memcpy(cmd, gen->command.u.raw.cmd, 16);
3518                 memcpy(gen->command.u.raw64.cmd, cmd, 16);
3519                 gen->command.u.raw64.clen = gen->command.u.raw.clen;
3520                 gen->command.u.raw64.sdlen = gen->command.u.raw.sdlen;
3521                 gen->command.u.raw64.direction = gen->command.u.raw.direction;
3522
3523                 /* addresses */
3524                 if (ha->raw_feat & SCATTER_GATHER) {
3525                         gen->command.u.raw64.sdata = (u64)-1;
3526                         gen->command.u.raw64.sg_ranz = 1;
3527                         gen->command.u.raw64.sg_lst[0].sg_ptr = paddr;
3528                         gen->command.u.raw64.sg_lst[0].sg_len = gen->data_len;
3529                         gen->command.u.raw64.sg_lst[1].sg_len = 0;
3530                 } else {
3531                         gen->command.u.raw64.sdata = paddr;
3532                         gen->command.u.raw64.sg_ranz = 0;
3533                 }
3534
3535                 gen->command.u.raw64.sense_data = paddr + gen->data_len;
3536         } else {
3537                 if (ha->raw_feat & SCATTER_GATHER) {
3538                         gen->command.u.raw.sdata = 0xffffffff;
3539                         gen->command.u.raw.sg_ranz = 1;
3540                         gen->command.u.raw.sg_lst[0].sg_ptr = (u32)paddr;
3541                         gen->command.u.raw.sg_lst[0].sg_len = gen->data_len;
3542                         gen->command.u.raw.sg_lst[1].sg_len = 0;
3543                 } else {
3544                         gen->command.u.raw.sdata = paddr;
3545                         gen->command.u.raw.sg_ranz = 0;
3546                 }
3547
3548                 gen->command.u.raw.sense_data = (u32)paddr + gen->data_len;
3549         }
3550 }
3551
3552 static int ioc_general(void __user *arg, char *cmnd)
3553 {
3554         gdth_ioctl_general gen;
3555         gdth_ha_str *ha;
3556         char *buf = NULL;
3557         dma_addr_t paddr;
3558         int rval;
3559
3560         if (copy_from_user(&gen, arg, sizeof(gdth_ioctl_general)))
3561                 return -EFAULT;
3562         ha = gdth_find_ha(gen.ionode);
3563         if (!ha)
3564                 return -EFAULT;
3565
3566         if (gen.data_len > INT_MAX)
3567                 return -EINVAL;
3568         if (gen.sense_len > INT_MAX)
3569                 return -EINVAL;
3570         if (gen.data_len + gen.sense_len > INT_MAX)
3571                 return -EINVAL;
3572
3573         if (gen.data_len + gen.sense_len > 0) {
3574                 buf = dma_alloc_coherent(&ha->pdev->dev,
3575                                 gen.data_len + gen.sense_len, &paddr,
3576                                 GFP_KERNEL);
3577                 if (!buf)
3578                         return -EFAULT;
3579
3580                 rval = -EFAULT;
3581                 if (copy_from_user(buf, arg + sizeof(gdth_ioctl_general),
3582                                    gen.data_len + gen.sense_len))
3583                         goto out_free_buf;
3584
3585                 if (gen.command.OpCode == GDT_IOCTL)
3586                         gen.command.u.ioctl.p_param = paddr;
3587                 else if (gen.command.Service == CACHESERVICE)
3588                         gdth_ioc_cacheservice(ha, &gen, paddr);
3589                 else if (gen.command.Service == SCSIRAWSERVICE)
3590                         gdth_ioc_scsiraw(ha, &gen, paddr);
3591                 else
3592                         goto out_free_buf;
3593         }
3594
3595         rval = __gdth_execute(ha->sdev, &gen.command, cmnd, gen.timeout,
3596                         &gen.info);
3597         if (rval < 0)
3598                 goto out_free_buf;
3599         gen.status = rval;
3600
3601         rval = -EFAULT;
3602         if (copy_to_user(arg + sizeof(gdth_ioctl_general), buf,
3603                          gen.data_len + gen.sense_len))
3604                 goto out_free_buf;
3605         if (copy_to_user(arg, &gen,
3606                         sizeof(gdth_ioctl_general) - sizeof(gdth_cmd_str)))
3607                 goto out_free_buf;
3608
3609         rval = 0;
3610 out_free_buf:
3611         if (buf)
3612                 dma_free_coherent(&ha->pdev->dev, gen.data_len + gen.sense_len,
3613                                   buf, paddr);
3614         return rval;
3615 }
3616
3617 static int ioc_hdrlist(void __user *arg, char *cmnd)
3618 {
3619     gdth_ioctl_rescan *rsc;
3620     gdth_cmd_str *cmd;
3621     gdth_ha_str *ha;
3622     u8 i;
3623     int rc = -ENOMEM;
3624     u32 cluster_type = 0;
3625
3626     rsc = kmalloc(sizeof(*rsc), GFP_KERNEL);
3627     cmd = kmalloc(sizeof(*cmd), GFP_KERNEL);
3628     if (!rsc || !cmd)
3629         goto free_fail;
3630
3631     if (copy_from_user(rsc, arg, sizeof(gdth_ioctl_rescan)) ||
3632         (NULL == (ha = gdth_find_ha(rsc->ionode)))) {
3633         rc = -EFAULT;
3634         goto free_fail;
3635     }
3636     memset(cmd, 0, sizeof(gdth_cmd_str));
3637
3638     for (i = 0; i < MAX_HDRIVES; ++i) {
3639         if (!ha->hdr[i].present) {
3640             rsc->hdr_list[i].bus = 0xff;
3641             continue;
3642         }
3643         rsc->hdr_list[i].bus = ha->virt_bus;
3644         rsc->hdr_list[i].target = i;
3645         rsc->hdr_list[i].lun = 0;
3646         rsc->hdr_list[i].cluster_type = ha->hdr[i].cluster_type;
3647         if (ha->hdr[i].cluster_type & CLUSTER_DRIVE) {
3648             cmd->Service = CACHESERVICE;
3649             cmd->OpCode = GDT_CLUST_INFO;
3650             if (ha->cache_feat & GDT_64BIT)
3651                 cmd->u.cache64.DeviceNo = i;
3652             else
3653                 cmd->u.cache.DeviceNo = i;
3654             if (__gdth_execute(ha->sdev, cmd, cmnd, 30, &cluster_type) == S_OK)
3655                 rsc->hdr_list[i].cluster_type = cluster_type;
3656         }
3657     }
3658
3659     if (copy_to_user(arg, rsc, sizeof(gdth_ioctl_rescan)))
3660         rc = -EFAULT;
3661     else
3662         rc = 0;
3663
3664 free_fail:
3665     kfree(rsc);
3666     kfree(cmd);
3667     return rc;
3668 }
3669
3670 static int ioc_rescan(void __user *arg, char *cmnd)
3671 {
3672     gdth_ioctl_rescan *rsc;
3673     gdth_cmd_str *cmd;
3674     u16 i, status, hdr_cnt;
3675     u32 info;
3676     int cyls, hds, secs;
3677     int rc = -ENOMEM;
3678     unsigned long flags;
3679     gdth_ha_str *ha;
3680
3681     rsc = kmalloc(sizeof(*rsc), GFP_KERNEL);
3682     cmd = kmalloc(sizeof(*cmd), GFP_KERNEL);
3683     if (!cmd || !rsc)
3684         goto free_fail;
3685
3686     if (copy_from_user(rsc, arg, sizeof(gdth_ioctl_rescan)) ||
3687         (NULL == (ha = gdth_find_ha(rsc->ionode)))) {
3688         rc = -EFAULT;
3689         goto free_fail;
3690     }
3691     memset(cmd, 0, sizeof(gdth_cmd_str));
3692
3693     if (rsc->flag == 0) {
3694         /* old method: re-init. cache service */
3695         cmd->Service = CACHESERVICE;
3696         if (ha->cache_feat & GDT_64BIT) {
3697             cmd->OpCode = GDT_X_INIT_HOST;
3698             cmd->u.cache64.DeviceNo = LINUX_OS;
3699         } else {
3700             cmd->OpCode = GDT_INIT;
3701             cmd->u.cache.DeviceNo = LINUX_OS;
3702         }
3703
3704         status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
3705         i = 0;
3706         hdr_cnt = (status == S_OK ? (u16)info : 0);
3707     } else {
3708         i = rsc->hdr_no;
3709         hdr_cnt = i + 1;
3710     }
3711
3712     for (; i < hdr_cnt && i < MAX_HDRIVES; ++i) {
3713         cmd->Service = CACHESERVICE;
3714         cmd->OpCode = GDT_INFO;
3715         if (ha->cache_feat & GDT_64BIT)
3716             cmd->u.cache64.DeviceNo = i;
3717         else
3718             cmd->u.cache.DeviceNo = i;
3719
3720         status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
3721
3722         spin_lock_irqsave(&ha->smp_lock, flags);
3723         rsc->hdr_list[i].bus = ha->virt_bus;
3724         rsc->hdr_list[i].target = i;
3725         rsc->hdr_list[i].lun = 0;
3726         if (status != S_OK) {
3727             ha->hdr[i].present = FALSE;
3728         } else {
3729             ha->hdr[i].present = TRUE;
3730             ha->hdr[i].size = info;
3731             /* evaluate mapping */
3732             ha->hdr[i].size &= ~SECS32;
3733             gdth_eval_mapping(ha->hdr[i].size,&cyls,&hds,&secs);
3734             ha->hdr[i].heads = hds;
3735             ha->hdr[i].secs = secs;
3736             /* round size */
3737             ha->hdr[i].size = cyls * hds * secs;
3738         }
3739         spin_unlock_irqrestore(&ha->smp_lock, flags);
3740         if (status != S_OK)
3741             continue;
3742
3743         /* extended info, if GDT_64BIT, for drives > 2 TB */
3744         /* but we need ha->info2, not yet stored in scp->SCp */
3745
3746         /* devtype, cluster info, R/W attribs */
3747         cmd->Service = CACHESERVICE;
3748         cmd->OpCode = GDT_DEVTYPE;
3749         if (ha->cache_feat & GDT_64BIT)
3750             cmd->u.cache64.DeviceNo = i;
3751         else
3752             cmd->u.cache.DeviceNo = i;
3753
3754         status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
3755
3756         spin_lock_irqsave(&ha->smp_lock, flags);
3757         ha->hdr[i].devtype = (status == S_OK ? (u16)info : 0);
3758         spin_unlock_irqrestore(&ha->smp_lock, flags);
3759
3760         cmd->Service = CACHESERVICE;
3761         cmd->OpCode = GDT_CLUST_INFO;
3762         if (ha->cache_feat & GDT_64BIT)
3763             cmd->u.cache64.DeviceNo = i;
3764         else
3765             cmd->u.cache.DeviceNo = i;
3766
3767         status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
3768
3769         spin_lock_irqsave(&ha->smp_lock, flags);
3770         ha->hdr[i].cluster_type =
3771             ((status == S_OK && !shared_access) ? (u16)info : 0);
3772         spin_unlock_irqrestore(&ha->smp_lock, flags);
3773         rsc->hdr_list[i].cluster_type = ha->hdr[i].cluster_type;
3774
3775         cmd->Service = CACHESERVICE;
3776         cmd->OpCode = GDT_RW_ATTRIBS;
3777         if (ha->cache_feat & GDT_64BIT)
3778             cmd->u.cache64.DeviceNo = i;
3779         else
3780             cmd->u.cache.DeviceNo = i;
3781
3782         status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
3783
3784         spin_lock_irqsave(&ha->smp_lock, flags);
3785         ha->hdr[i].rw_attribs = (status == S_OK ? (u16)info : 0);
3786         spin_unlock_irqrestore(&ha->smp_lock, flags);
3787     }
3788
3789     if (copy_to_user(arg, rsc, sizeof(gdth_ioctl_rescan)))
3790         rc = -EFAULT;
3791     else
3792         rc = 0;
3793
3794 free_fail:
3795     kfree(rsc);
3796     kfree(cmd);
3797     return rc;
3798 }
3799
3800 static int gdth_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
3801 {
3802     gdth_ha_str *ha;
3803     struct scsi_cmnd *scp;
3804     unsigned long flags;
3805     char cmnd[MAX_COMMAND_SIZE];
3806     void __user *argp = (void __user *)arg;
3807
3808     memset(cmnd, 0xff, 12);
3809
3810     TRACE(("gdth_ioctl() cmd 0x%x\n", cmd));
3811
3812     switch (cmd) {
3813       case GDTIOCTL_CTRCNT:
3814       {
3815         int cnt = gdth_ctr_count;
3816         if (put_user(cnt, (int __user *)argp))
3817                 return -EFAULT;
3818         break;
3819       }
3820
3821       case GDTIOCTL_DRVERS:
3822       {
3823         int ver = (GDTH_VERSION<<8) | GDTH_SUBVERSION;
3824         if (put_user(ver, (int __user *)argp))
3825                 return -EFAULT;
3826         break;
3827       }
3828
3829       case GDTIOCTL_OSVERS:
3830       {
3831         gdth_ioctl_osvers osv;
3832
3833         osv.version = (u8)(LINUX_VERSION_CODE >> 16);
3834         osv.subversion = (u8)(LINUX_VERSION_CODE >> 8);
3835         osv.revision = (u16)(LINUX_VERSION_CODE & 0xff);
3836         if (copy_to_user(argp, &osv, sizeof(gdth_ioctl_osvers)))
3837                 return -EFAULT;
3838         break;
3839       }
3840
3841       case GDTIOCTL_CTRTYPE:
3842       {
3843         gdth_ioctl_ctrtype ctrt;
3844
3845         if (copy_from_user(&ctrt, argp, sizeof(gdth_ioctl_ctrtype)) ||
3846             (NULL == (ha = gdth_find_ha(ctrt.ionode))))
3847             return -EFAULT;
3848
3849         if (ha->type != GDT_PCIMPR) {
3850             ctrt.type = (u8)((ha->stype<<4) + 6);
3851         } else {
3852             ctrt.type =  (ha->oem_id == OEM_ID_INTEL ? 0xfd : 0xfe);
3853             if (ha->stype >= 0x300)
3854                 ctrt.ext_type = 0x6000 | ha->pdev->subsystem_device;
3855             else
3856                 ctrt.ext_type = 0x6000 | ha->stype;
3857         }
3858         ctrt.device_id = ha->pdev->device;
3859         ctrt.sub_device_id = ha->pdev->subsystem_device;
3860         ctrt.info = ha->brd_phys;
3861         ctrt.oem_id = ha->oem_id;
3862         if (copy_to_user(argp, &ctrt, sizeof(gdth_ioctl_ctrtype)))
3863             return -EFAULT;
3864         break;
3865       }
3866
3867       case GDTIOCTL_GENERAL:
3868         return ioc_general(argp, cmnd);
3869
3870       case GDTIOCTL_EVENT:
3871         return ioc_event(argp);
3872
3873       case GDTIOCTL_LOCKDRV:
3874         return ioc_lockdrv(argp);
3875
3876       case GDTIOCTL_LOCKCHN:
3877       {
3878         gdth_ioctl_lockchn lchn;
3879         u8 i, j;
3880
3881         if (copy_from_user(&lchn, argp, sizeof(gdth_ioctl_lockchn)) ||
3882             (NULL == (ha = gdth_find_ha(lchn.ionode))))
3883             return -EFAULT;
3884
3885         i = lchn.channel;
3886         if (i < ha->bus_cnt) {
3887             if (lchn.lock) {
3888                 spin_lock_irqsave(&ha->smp_lock, flags);
3889                 ha->raw[i].lock = 1;
3890                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3891                 for (j = 0; j < ha->tid_cnt; ++j)
3892                     gdth_wait_completion(ha, i, j);
3893             } else {
3894                 spin_lock_irqsave(&ha->smp_lock, flags);
3895                 ha->raw[i].lock = 0;
3896                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3897                 for (j = 0; j < ha->tid_cnt; ++j)
3898                     gdth_next(ha);
3899             }
3900         }
3901         break;
3902       }
3903
3904       case GDTIOCTL_RESCAN:
3905         return ioc_rescan(argp, cmnd);
3906
3907       case GDTIOCTL_HDRLIST:
3908         return ioc_hdrlist(argp, cmnd);
3909
3910       case GDTIOCTL_RESET_BUS:
3911       {
3912         gdth_ioctl_reset res;
3913         int rval;
3914
3915         if (copy_from_user(&res, argp, sizeof(gdth_ioctl_reset)) ||
3916             (NULL == (ha = gdth_find_ha(res.ionode))))
3917             return -EFAULT;
3918
3919         scp  = kzalloc(sizeof(*scp), GFP_KERNEL);
3920         if (!scp)
3921             return -ENOMEM;
3922         scp->device = ha->sdev;
3923         scp->cmd_len = 12;
3924         scp->device->channel = res.number;
3925         rval = gdth_eh_bus_reset(scp);
3926         res.status = (rval == SUCCESS ? S_OK : S_GENERR);
3927         kfree(scp);
3928
3929         if (copy_to_user(argp, &res, sizeof(gdth_ioctl_reset)))
3930             return -EFAULT;
3931         break;
3932       }
3933
3934       case GDTIOCTL_RESET_DRV:
3935         return ioc_resetdrv(argp, cmnd);
3936
3937       default:
3938         break;
3939     }
3940     return 0;
3941 }
3942
3943 static long gdth_unlocked_ioctl(struct file *file, unsigned int cmd,
3944                                 unsigned long arg)
3945 {
3946         int ret;
3947
3948         mutex_lock(&gdth_mutex);
3949         ret = gdth_ioctl(file, cmd, arg);
3950         mutex_unlock(&gdth_mutex);
3951
3952         return ret;
3953 }
3954
3955 /* flush routine */
3956 static void gdth_flush(gdth_ha_str *ha)
3957 {
3958     int             i;
3959     gdth_cmd_str    gdtcmd;
3960     char            cmnd[MAX_COMMAND_SIZE];
3961     memset(cmnd, 0xff, MAX_COMMAND_SIZE);
3962
3963     TRACE2(("gdth_flush() hanum %d\n", ha->hanum));
3964
3965     for (i = 0; i < MAX_HDRIVES; ++i) {
3966         if (ha->hdr[i].present) {
3967             gdtcmd.BoardNode = LOCALBOARD;
3968             gdtcmd.Service = CACHESERVICE;
3969             gdtcmd.OpCode = GDT_FLUSH;
3970             if (ha->cache_feat & GDT_64BIT) {
3971                 gdtcmd.u.cache64.DeviceNo = i;
3972                 gdtcmd.u.cache64.BlockNo = 1;
3973                 gdtcmd.u.cache64.sg_canz = 0;
3974             } else {
3975                 gdtcmd.u.cache.DeviceNo = i;
3976                 gdtcmd.u.cache.BlockNo = 1;
3977                 gdtcmd.u.cache.sg_canz = 0;
3978             }
3979             TRACE2(("gdth_flush(): flush ha %d drive %d\n", ha->hanum, i));
3980
3981             gdth_execute(ha->shost, &gdtcmd, cmnd, 30, NULL);
3982         }
3983     }
3984 }
3985
3986 /* configure lun */
3987 static int gdth_slave_configure(struct scsi_device *sdev)
3988 {
3989     sdev->skip_ms_page_3f = 1;
3990     sdev->skip_ms_page_8 = 1;
3991     return 0;
3992 }
3993
3994 static struct scsi_host_template gdth_template = {
3995         .name                   = "GDT SCSI Disk Array Controller",
3996         .info                   = gdth_info,
3997         .queuecommand           = gdth_queuecommand,
3998         .eh_bus_reset_handler   = gdth_eh_bus_reset,
3999         .slave_configure        = gdth_slave_configure,
4000         .bios_param             = gdth_bios_param,
4001         .show_info              = gdth_show_info,
4002         .write_info             = gdth_set_info,
4003         .eh_timed_out           = gdth_timed_out,
4004         .proc_name              = "gdth",
4005         .can_queue              = GDTH_MAXCMDS,
4006         .this_id                = -1,
4007         .sg_tablesize           = GDTH_MAXSG,
4008         .cmd_per_lun            = GDTH_MAXC_P_L,
4009         .unchecked_isa_dma      = 1,
4010         .no_write_same          = 1,
4011 };
4012
4013 static int gdth_pci_probe_one(gdth_pci_str *pcistr, gdth_ha_str **ha_out)
4014 {
4015         struct Scsi_Host *shp;
4016         gdth_ha_str *ha;
4017         dma_addr_t scratch_dma_handle = 0;
4018         int error, i;
4019         struct pci_dev *pdev = pcistr->pdev;
4020
4021         *ha_out = NULL;
4022
4023         shp = scsi_host_alloc(&gdth_template, sizeof(gdth_ha_str));
4024         if (!shp)
4025                 return -ENOMEM;
4026         ha = shost_priv(shp);
4027
4028         error = -ENODEV;
4029         if (!gdth_init_pci(pdev, pcistr, ha))
4030                 goto out_host_put;
4031
4032         /* controller found and initialized */
4033         printk("Configuring GDT-PCI HA at %d/%d IRQ %u\n",
4034                 pdev->bus->number,
4035                 PCI_SLOT(pdev->devfn),
4036                 ha->irq);
4037
4038         error = request_irq(ha->irq, gdth_interrupt,
4039                                 IRQF_SHARED, "gdth", ha);
4040         if (error) {
4041                 printk("GDT-PCI: Unable to allocate IRQ\n");
4042                 goto out_host_put;
4043         }
4044
4045         shp->unchecked_isa_dma = 0;
4046         shp->irq = ha->irq;
4047         shp->dma_channel = 0xff;
4048
4049         ha->hanum = gdth_ctr_count++;
4050         ha->shost = shp;
4051
4052         ha->pccb = &ha->cmdext;
4053         ha->ccb_phys = 0L;
4054
4055         error = -ENOMEM;
4056
4057         ha->pscratch = dma_alloc_coherent(&ha->pdev->dev, GDTH_SCRATCH,
4058                                 &scratch_dma_handle, GFP_KERNEL);
4059         if (!ha->pscratch)
4060                 goto out_free_irq;
4061         ha->scratch_phys = scratch_dma_handle;
4062
4063         ha->pmsg = dma_alloc_coherent(&ha->pdev->dev, sizeof(gdth_msg_str),
4064                                 &scratch_dma_handle, GFP_KERNEL);
4065         if (!ha->pmsg)
4066                 goto out_free_pscratch;
4067         ha->msg_phys = scratch_dma_handle;
4068
4069         ha->scratch_busy = FALSE;
4070         ha->req_first = NULL;
4071         ha->tid_cnt = pdev->device >= 0x200 ? MAXID : MAX_HDRIVES;
4072         if (max_ids > 0 && max_ids < ha->tid_cnt)
4073                 ha->tid_cnt = max_ids;
4074         for (i = 0; i < GDTH_MAXCMDS; ++i)
4075                 ha->cmd_tab[i].cmnd = UNUSED_CMND;
4076         ha->scan_mode = rescan ? 0x10 : 0;
4077
4078         error = -ENODEV;
4079         if (!gdth_search_drives(ha)) {
4080                 printk("GDT-PCI %d: Error during device scan\n", ha->hanum);
4081                 goto out_free_pmsg;
4082         }
4083
4084         if (hdr_channel < 0 || hdr_channel > ha->bus_cnt)
4085                 hdr_channel = ha->bus_cnt;
4086         ha->virt_bus = hdr_channel;
4087
4088         /* 64-bit DMA only supported from FW >= x.43 */
4089         if (!(ha->cache_feat & ha->raw_feat & ha->screen_feat & GDT_64BIT) ||
4090             !ha->dma64_support) {
4091                 if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) {
4092                         printk(KERN_WARNING "GDT-PCI %d: "
4093                                 "Unable to set 32-bit DMA\n", ha->hanum);
4094                                 goto out_free_pmsg;
4095                 }
4096         } else {
4097                 shp->max_cmd_len = 16;
4098                 if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) {
4099                         printk("GDT-PCI %d: 64-bit DMA enabled\n", ha->hanum);
4100                 } else if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) {
4101                         printk(KERN_WARNING "GDT-PCI %d: "
4102                                 "Unable to set 64/32-bit DMA\n", ha->hanum);
4103                         goto out_free_pmsg;
4104                 }
4105         }
4106
4107         shp->max_id      = ha->tid_cnt;
4108         shp->max_lun     = MAXLUN;
4109         shp->max_channel = ha->bus_cnt;
4110
4111         spin_lock_init(&ha->smp_lock);
4112         gdth_enable_int(ha);
4113
4114         error = scsi_add_host(shp, &pdev->dev);
4115         if (error)
4116                 goto out_free_pmsg;
4117         list_add_tail(&ha->list, &gdth_instances);
4118
4119         pci_set_drvdata(ha->pdev, ha);
4120         gdth_timer_init();
4121
4122         scsi_scan_host(shp);
4123
4124         *ha_out = ha;
4125
4126         return 0;
4127
4128  out_free_pmsg:
4129         dma_free_coherent(&ha->pdev->dev, sizeof(gdth_msg_str),
4130                                 ha->pmsg, ha->msg_phys);
4131  out_free_pscratch:
4132         dma_free_coherent(&ha->pdev->dev, GDTH_SCRATCH,
4133                                 ha->pscratch, ha->scratch_phys);
4134  out_free_irq:
4135         free_irq(ha->irq, ha);
4136         gdth_ctr_count--;
4137  out_host_put:
4138         scsi_host_put(shp);
4139         return error;
4140 }
4141
4142 static void gdth_remove_one(gdth_ha_str *ha)
4143 {
4144         struct Scsi_Host *shp = ha->shost;
4145
4146         TRACE2(("gdth_remove_one()\n"));
4147
4148         scsi_remove_host(shp);
4149
4150         gdth_flush(ha);
4151
4152         if (ha->sdev) {
4153                 scsi_free_host_dev(ha->sdev);
4154                 ha->sdev = NULL;
4155         }
4156
4157         if (shp->irq)
4158                 free_irq(shp->irq,ha);
4159
4160         if (ha->pscratch)
4161                 dma_free_coherent(&ha->pdev->dev, GDTH_SCRATCH,
4162                         ha->pscratch, ha->scratch_phys);
4163         if (ha->pmsg)
4164                 dma_free_coherent(&ha->pdev->dev, sizeof(gdth_msg_str),
4165                         ha->pmsg, ha->msg_phys);
4166         if (ha->ccb_phys)
4167                 dma_unmap_single(&ha->pdev->dev, ha->ccb_phys,
4168                         sizeof(gdth_cmd_str), DMA_BIDIRECTIONAL);
4169
4170         scsi_host_put(shp);
4171 }
4172
4173 static int gdth_halt(struct notifier_block *nb, unsigned long event, void *buf)
4174 {
4175         gdth_ha_str *ha;
4176
4177         TRACE2(("gdth_halt() event %d\n", (int)event));
4178         if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF)
4179                 return NOTIFY_DONE;
4180
4181         list_for_each_entry(ha, &gdth_instances, list)
4182                 gdth_flush(ha);
4183
4184         return NOTIFY_OK;
4185 }
4186
4187 static struct notifier_block gdth_notifier = {
4188     gdth_halt, NULL, 0
4189 };
4190
4191 static int __init gdth_init(void)
4192 {
4193         if (disable) {
4194                 printk("GDT-HA: Controller driver disabled from"
4195                        " command line !\n");
4196                 return 0;
4197         }
4198
4199         printk("GDT-HA: Storage RAID Controller Driver. Version: %s\n",
4200                GDTH_VERSION_STR);
4201
4202         /* initializations */
4203         gdth_polling = TRUE;
4204         gdth_clear_events();
4205         timer_setup(&gdth_timer, gdth_timeout, 0);
4206
4207         /* scanning for PCI controllers */
4208         if (pci_register_driver(&gdth_pci_driver)) {
4209                 gdth_ha_str *ha;
4210
4211                 list_for_each_entry(ha, &gdth_instances, list)
4212                         gdth_remove_one(ha);
4213                 return -ENODEV;
4214         }
4215
4216         TRACE2(("gdth_detect() %d controller detected\n", gdth_ctr_count));
4217
4218         major = register_chrdev(0,"gdth", &gdth_fops);
4219         register_reboot_notifier(&gdth_notifier);
4220         gdth_polling = FALSE;
4221         return 0;
4222 }
4223
4224 static void __exit gdth_exit(void)
4225 {
4226         gdth_ha_str *ha;
4227
4228         unregister_chrdev(major, "gdth");
4229         unregister_reboot_notifier(&gdth_notifier);
4230
4231 #ifdef GDTH_STATISTICS
4232         del_timer_sync(&gdth_timer);
4233 #endif
4234
4235         pci_unregister_driver(&gdth_pci_driver);
4236
4237         list_for_each_entry(ha, &gdth_instances, list)
4238                 gdth_remove_one(ha);
4239 }
4240
4241 module_init(gdth_init);
4242 module_exit(gdth_exit);
4243
4244 #ifndef MODULE
4245 static void __init internal_setup(char *str,int *ints)
4246 {
4247     int i;
4248     char *cur_str, *argv;
4249
4250     TRACE2(("internal_setup() str %s ints[0] %d\n",
4251             str ? str:"NULL", ints ? ints[0]:0));
4252
4253     /* analyse string */
4254     argv = str;
4255     while (argv && (cur_str = strchr(argv, ':'))) {
4256         int val = 0, c = *++cur_str;
4257
4258         if (c == 'n' || c == 'N')
4259             val = 0;
4260         else if (c == 'y' || c == 'Y')
4261             val = 1;
4262         else
4263             val = (int)simple_strtoul(cur_str, NULL, 0);
4264
4265         if (!strncmp(argv, "disable:", 8))
4266             disable = val;
4267         else if (!strncmp(argv, "reserve_mode:", 13))
4268             reserve_mode = val;
4269         else if (!strncmp(argv, "reverse_scan:", 13))
4270             reverse_scan = val;
4271         else if (!strncmp(argv, "hdr_channel:", 12))
4272             hdr_channel = val;
4273         else if (!strncmp(argv, "max_ids:", 8))
4274             max_ids = val;
4275         else if (!strncmp(argv, "rescan:", 7))
4276             rescan = val;
4277         else if (!strncmp(argv, "shared_access:", 14))
4278             shared_access = val;
4279         else if (!strncmp(argv, "reserve_list:", 13)) {
4280             reserve_list[0] = val;
4281             for (i = 1; i < MAX_RES_ARGS; i++) {
4282                 cur_str = strchr(cur_str, ',');
4283                 if (!cur_str)
4284                     break;
4285                 if (!isdigit((int)*++cur_str)) {
4286                     --cur_str;
4287                     break;
4288                 }
4289                 reserve_list[i] =
4290                     (int)simple_strtoul(cur_str, NULL, 0);
4291             }
4292             if (!cur_str)
4293                 break;
4294             argv = ++cur_str;
4295             continue;
4296         }
4297
4298         if ((argv = strchr(argv, ',')))
4299             ++argv;
4300     }
4301 }
4302
4303 static int __init option_setup(char *str)
4304 {
4305     int ints[MAXHA];
4306     char *cur = str;
4307     int i = 1;
4308
4309     TRACE2(("option_setup() str %s\n", str ? str:"NULL"));
4310
4311     while (cur && isdigit(*cur) && i < MAXHA) {
4312         ints[i++] = simple_strtoul(cur, NULL, 0);
4313         if ((cur = strchr(cur, ',')) != NULL) cur++;
4314     }
4315
4316     ints[0] = i - 1;
4317     internal_setup(cur, ints);
4318     return 1;
4319 }
4320
4321 __setup("gdth=", option_setup);
4322 #endif