drivers/scsi/gdth.c

   1 /************************************************************************
   2  * Linux driver for                                                     *
   3  * ICP vortex GmbH:    GDT ISA/EISA/PCI Disk Array Controllers          *
   4  * Intel Corporation:  Storage RAID Controllers                         *
   5  *                                                                      *
   6  * gdth.c                                                               *
   7  * Copyright (C) 1995-06 ICP vortex GmbH, Achim Leubner                 *
   8  * Copyright (C) 2002-04 Intel Corporation                              *
   9  * Copyright (C) 2003-06 Adaptec Inc.                                   *
  10  * <achim_leubner@adaptec.com>                                          *
  11  *                                                                      *
  12  * Additions/Fixes:                                                     *
  13  * Boji Tony Kannanthanam <boji.t.kannanthanam@intel.com>               *
  14  * Johannes Dinner <johannes_dinner@adaptec.com>                        *
  15  *                                                                      *
  16  * This program is free software; you can redistribute it and/or modify *
  17  * it under the terms of the GNU General Public License as published    *
  18  * by the Free Software Foundation; either version 2 of the License,    *
  19  * or (at your option) any later version.                               *
  20  *                                                                      *
  21  * This program is distributed in the hope that it will be useful,      *
  22  * but WITHOUT ANY WARRANTY; without even the implied warranty of       *
  23  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the         *
  24  * GNU General Public License for more details.                         *
  25  *                                                                      *
  26  * You should have received a copy of the GNU General Public License    *
  27  * along with this kernel; if not, write to the Free Software           *
  28  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.            *
  29  *                                                                      *
  30  * Linux kernel 2.6.x supported                                         *
  31  *                                                                      *
  32  ************************************************************************/
  33
  34 /* All GDT Disk Array Controllers are fully supported by this driver.
  35  * This includes the PCI/EISA/ISA SCSI Disk Array Controllers and the
  36  * PCI Fibre Channel Disk Array Controllers. See gdth.h for a complete
  37  * list of all controller types.
  38  *
  39  * If you have one or more GDT3000/3020 EISA controllers with
  40  * controller BIOS disabled, you have to set the IRQ values with the
  41  * command line option "gdth=irq1,irq2,...", where the irq1,irq2,... are
  42  * the IRQ values for the EISA controllers.
  43  *
  44  * After the optional list of IRQ values, other possible
  45  * command line options are:
  46  * disable:Y                    disable driver
  47  * disable:N                    enable driver
  48  * reserve_mode:0               reserve no drives for the raw service
  49  * reserve_mode:1               reserve all not init., removable drives
  50  * reserve_mode:2               reserve all not init. drives
  51  * reserve_list:h,b,t,l,h,b,t,l,...     reserve particular drive(s) with
  52  *                              h- controller no., b- channel no.,
  53  *                              t- target ID, l- LUN
  54  * reverse_scan:Y               reverse scan order for PCI controllers
  55  * reverse_scan:N               scan PCI controllers like BIOS
  56  * max_ids:x                    x - target ID count per channel (1..MAXID)
  57  * rescan:Y                     rescan all channels/IDs
  58  * rescan:N                     use all devices found until now
  59  * hdr_channel:x                x - number of virtual bus for host drives
  60  * shared_access:Y              disable driver reserve/release protocol to
  61  *                              access a shared resource from several nodes,
  62  *                              appropriate controller firmware required
  63  * shared_access:N              enable driver reserve/release protocol
  64  * probe_eisa_isa:Y             scan for EISA/ISA controllers
  65  * probe_eisa_isa:N             do not scan for EISA/ISA controllers
  66  * force_dma32:Y                use only 32 bit DMA mode
  67  * force_dma32:N                use 64 bit DMA mode, if supported
  68  *
  69  * The default values are: "gdth=disable:N,reserve_mode:1,reverse_scan:N,
  70  *                          max_ids:127,rescan:N,hdr_channel:0,
  71  *                          shared_access:Y,probe_eisa_isa:N,force_dma32:N".
  72  * Here is another example: "gdth=reserve_list:0,1,2,0,0,1,3,0,rescan:Y".
  73  *
  74  * When loading the gdth driver as a module, the same options are available.
  75  * You can set the IRQs with "IRQ=...". However, the syntax to specify the
  76  * options changes slightly. You must replace all ',' between options
  77  * with ' ' and all ':' with '=' and you must use
  78  * '1' in place of 'Y' and '0' in place of 'N'.
  79  *
  80  * Default: "modprobe gdth disable=0 reserve_mode=1 reverse_scan=0
  81  *           max_ids=127 rescan=0 hdr_channel=0 shared_access=0
  82  *           probe_eisa_isa=0 force_dma32=0"
  83  * The other example: "modprobe gdth reserve_list=0,1,2,0,0,1,3,0 rescan=1".
  84  */
  85
  86 /* The meaning of the Scsi_Pointer members in this driver is as follows:
  87  * ptr:                     Chaining
  88  * this_residual:           unused
  89  * buffer:                  unused
  90  * dma_handle:              unused
  91  * buffers_residual:        unused
  92  * Status:                  unused
  93  * Message:                 unused
  94  * have_data_in:            unused
  95  * sent_command:            unused
  96  * phase:                   unused
  97  */
  98
  99
 100 /* interrupt coalescing */
 101 /* #define INT_COAL */
 102
 103 /* statistics */
 104 #define GDTH_STATISTICS
 105
 106 #include <linux/module.h>
 107
 108 #include <linux/version.h>
 109 #include <linux/kernel.h>
 110 #include <linux/types.h>
 111 #include <linux/pci.h>
 112 #include <linux/string.h>
 113 #include <linux/ctype.h>
 114 #include <linux/ioport.h>
 115 #include <linux/delay.h>
 116 #include <linux/interrupt.h>
 117 #include <linux/in.h>
 118 #include <linux/proc_fs.h>
 119 #include <linux/time.h>
 120 #include <linux/timer.h>
 121 #include <linux/dma-mapping.h>
 122 #include <linux/list.h>
 123 #include <linux/mutex.h>
 124 #include <linux/slab.h>
 125
 126 #ifdef GDTH_RTC
 127 #include <linux/mc146818rtc.h>
 128 #endif
 129 #include <linux/reboot.h>
 130
 131 #include <asm/dma.h>
 132 #include <asm/io.h>
 133 #include <asm/uaccess.h>
 134 #include <linux/spinlock.h>
 135 #include <linux/blkdev.h>
 136 #include <linux/scatterlist.h>
 137
 138 #include "scsi.h"
 139 #include <scsi/scsi_host.h>
 140 #include "gdth.h"
 141
 142 static DEFINE_MUTEX(gdth_mutex);
 143 static void gdth_delay(int milliseconds);
 144 static void gdth_eval_mapping(u32 size, u32 *cyls, int *heads, int *secs);
 145 static irqreturn_t gdth_interrupt(int irq, void *dev_id);
 146 static irqreturn_t __gdth_interrupt(gdth_ha_str *ha,
 147                                     int gdth_from_wait, int* pIndex);
 148 static int gdth_sync_event(gdth_ha_str *ha, int service, u8 index,
 149                                                                Scsi_Cmnd *scp);
 150 static int gdth_async_event(gdth_ha_str *ha);
 151 static void gdth_log_event(gdth_evt_data *dvr, char *buffer);
 152
 153 static void gdth_putq(gdth_ha_str *ha, Scsi_Cmnd *scp, u8 priority);
 154 static void gdth_next(gdth_ha_str *ha);
 155 static int gdth_fill_raw_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, u8 b);
 156 static int gdth_special_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp);
 157 static gdth_evt_str *gdth_store_event(gdth_ha_str *ha, u16 source,
 158                                       u16 idx, gdth_evt_data *evt);
 159 static int gdth_read_event(gdth_ha_str *ha, int handle, gdth_evt_str *estr);
 160 static void gdth_readapp_event(gdth_ha_str *ha, u8 application,
 161                                gdth_evt_str *estr);
 162 static void gdth_clear_events(void);
 163
 164 static void gdth_copy_internal_data(gdth_ha_str *ha, Scsi_Cmnd *scp,
 165                                     char *buffer, u16 count);
 166 static int gdth_internal_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp);
 167 static int gdth_fill_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, u16 hdrive);
 168
 169 static void gdth_enable_int(gdth_ha_str *ha);
 170 static int gdth_test_busy(gdth_ha_str *ha);
 171 static int gdth_get_cmd_index(gdth_ha_str *ha);
 172 static void gdth_release_event(gdth_ha_str *ha);
 173 static int gdth_wait(gdth_ha_str *ha, int index,u32 time);
 174 static int gdth_internal_cmd(gdth_ha_str *ha, u8 service, u16 opcode,
 175                                              u32 p1, u64 p2,u64 p3);
 176 static int gdth_search_drives(gdth_ha_str *ha);
 177 static int gdth_analyse_hdrive(gdth_ha_str *ha, u16 hdrive);
 178
 179 static const char *gdth_ctr_name(gdth_ha_str *ha);
 180
 181 static int gdth_open(struct inode *inode, struct file *filep);
 182 static int gdth_close(struct inode *inode, struct file *filep);
 183 static long gdth_unlocked_ioctl(struct file *filep, unsigned int cmd,
 184                                 unsigned long arg);
 185
 186 static void gdth_flush(gdth_ha_str *ha);
 187 static int gdth_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd);
 188 static int __gdth_queuecommand(gdth_ha_str *ha, struct scsi_cmnd *scp,
 189                                 struct gdth_cmndinfo *cmndinfo);
 190 static void gdth_scsi_done(struct scsi_cmnd *scp);
 191
 192 #ifdef DEBUG_GDTH
 193 static u8   DebugState = DEBUG_GDTH;
 194
 195 #ifdef __SERIAL__
 196 #define MAX_SERBUF 160
 197 static void ser_init(void);
 198 static void ser_puts(char *str);
 199 static void ser_putc(char c);
 200 static int  ser_printk(const char *fmt, ...);
 201 static char strbuf[MAX_SERBUF+1];
 202 #ifdef __COM2__
 203 #define COM_BASE 0x2f8
 204 #else
 205 #define COM_BASE 0x3f8
 206 #endif
 207 static void ser_init()
 208 {
 209     unsigned port=COM_BASE;
 210
 211     outb(0x80,port+3);
 212     outb(0,port+1);
 213     /* 19200 Baud, if 9600: outb(12,port) */
 214     outb(6, port);
 215     outb(3,port+3);
 216     outb(0,port+1);
 217     /*
 218     ser_putc('I');
 219     ser_putc(' ');
 220     */
 221 }
 222
 223 static void ser_puts(char *str)
 224 {
 225     char *ptr;
 226
 227     ser_init();
 228     for (ptr=str;*ptr;++ptr)
 229         ser_putc(*ptr);
 230 }
 231
 232 static void ser_putc(char c)
 233 {
 234     unsigned port=COM_BASE;
 235
 236     while ((inb(port+5) & 0x20)==0);
 237     outb(c,port);
 238     if (c==0x0a)
 239     {
 240         while ((inb(port+5) & 0x20)==0);
 241         outb(0x0d,port);
 242     }
 243 }
 244
 245 static int ser_printk(const char *fmt, ...)
 246 {
 247     va_list args;
 248     int i;
 249
 250     va_start(args,fmt);
 251     i = vsprintf(strbuf,fmt,args);
 252     ser_puts(strbuf);
 253     va_end(args);
 254     return i;
 255 }
 256
 257 #define TRACE(a)    {if (DebugState==1) {ser_printk a;}}
 258 #define TRACE2(a)   {if (DebugState==1 || DebugState==2) {ser_printk a;}}
 259 #define TRACE3(a)   {if (DebugState!=0) {ser_printk a;}}
 260
 261 #else /* !__SERIAL__ */
 262 #define TRACE(a)    {if (DebugState==1) {printk a;}}
 263 #define TRACE2(a)   {if (DebugState==1 || DebugState==2) {printk a;}}
 264 #define TRACE3(a)   {if (DebugState!=0) {printk a;}}
 265 #endif
 266
 267 #else /* !DEBUG */
 268 #define TRACE(a)
 269 #define TRACE2(a)
 270 #define TRACE3(a)
 271 #endif
 272
 273 #ifdef GDTH_STATISTICS
 274 static u32 max_rq=0, max_index=0, max_sg=0;
 275 #ifdef INT_COAL
 276 static u32 max_int_coal=0;
 277 #endif
 278 static u32 act_ints=0, act_ios=0, act_stats=0, act_rq=0;
 279 static struct timer_list gdth_timer;
 280 #endif
 281
 282 #define PTR2USHORT(a)   (u16)(unsigned long)(a)
 283 #define GDTOFFSOF(a,b)  (size_t)&(((a*)0)->b)
 284 #define INDEX_OK(i,t)   ((i)<ARRAY_SIZE(t))
 285
 286 #define BUS_L2P(a,b)    ((b)>(a)->virt_bus ? (b-1):(b))
 287
 288 #ifdef CONFIG_ISA
 289 static u8   gdth_drq_tab[4] = {5,6,7,7};            /* DRQ table */
 290 #endif
 291 #if defined(CONFIG_EISA) || defined(CONFIG_ISA)
 292 static u8   gdth_irq_tab[6] = {0,10,11,12,14,0};    /* IRQ table */
 293 #endif
 294 static u8   gdth_polling;                           /* polling if TRUE */
 295 static int      gdth_ctr_count  = 0;                    /* controller count */
 296 static LIST_HEAD(gdth_instances);                       /* controller list */
 297 static u8   gdth_write_through = FALSE;             /* write through */
 298 static gdth_evt_str ebuffer[MAX_EVENTS];                /* event buffer */
 299 static int elastidx;
 300 static int eoldidx;
 301 static int major;
 302
 303 #define DIN     1                               /* IN data direction */
 304 #define DOU     2                               /* OUT data direction */
 305 #define DNO     DIN                             /* no data transfer */
 306 #define DUN     DIN                             /* unknown data direction */
 307 static u8 gdth_direction_tab[0x100] = {
 308     DNO,DNO,DIN,DIN,DOU,DIN,DIN,DOU,DIN,DUN,DOU,DOU,DUN,DUN,DUN,DIN,
 309     DNO,DIN,DIN,DOU,DIN,DOU,DNO,DNO,DOU,DNO,DIN,DNO,DIN,DOU,DNO,DUN,
 310     DIN,DUN,DIN,DUN,DOU,DIN,DUN,DUN,DIN,DIN,DOU,DNO,DUN,DIN,DOU,DOU,
 311     DOU,DOU,DOU,DNO,DIN,DNO,DNO,DIN,DOU,DOU,DOU,DOU,DIN,DOU,DIN,DOU,
 312     DOU,DOU,DIN,DIN,DIN,DNO,DUN,DNO,DNO,DNO,DUN,DNO,DOU,DIN,DUN,DUN,
 313     DUN,DUN,DUN,DUN,DUN,DOU,DUN,DUN,DUN,DUN,DIN,DUN,DUN,DUN,DUN,DUN,
 314     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
 315     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
 316     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DIN,DUN,DOU,DUN,DUN,DUN,DUN,DUN,
 317     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DIN,DUN,
 318     DUN,DUN,DUN,DUN,DUN,DNO,DNO,DUN,DIN,DNO,DOU,DUN,DNO,DUN,DOU,DOU,
 319     DOU,DOU,DOU,DNO,DUN,DIN,DOU,DIN,DIN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
 320     DUN,DUN,DOU,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
 321     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
 322     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DOU,DUN,DUN,DUN,DUN,DUN,
 323     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN
 324 };
 325
 326 /* LILO and modprobe/insmod parameters */
 327 /* IRQ list for GDT3000/3020 EISA controllers */
 328 static int irq[MAXHA] __initdata =
 329 {0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
 330  0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};
 331 /* disable driver flag */
 332 static int disable __initdata = 0;
 333 /* reserve flag */
 334 static int reserve_mode = 1;
 335 /* reserve list */
 336 static int reserve_list[MAX_RES_ARGS] =
 337 {0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
 338  0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
 339  0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};
 340 /* scan order for PCI controllers */
 341 static int reverse_scan = 0;
 342 /* virtual channel for the host drives */
 343 static int hdr_channel = 0;
 344 /* max. IDs per channel */
 345 static int max_ids = MAXID;
 346 /* rescan all IDs */
 347 static int rescan = 0;
 348 /* shared access */
 349 static int shared_access = 1;
 350 /* enable support for EISA and ISA controllers */
 351 static int probe_eisa_isa = 0;
 352 /* 64 bit DMA mode, support for drives > 2 TB, if force_dma32 = 0 */
 353 static int force_dma32 = 0;
 354
 355 /* parameters for modprobe/insmod */
 356 module_param_array(irq, int, NULL, 0);
 357 module_param(disable, int, 0);
 358 module_param(reserve_mode, int, 0);
 359 module_param_array(reserve_list, int, NULL, 0);
 360 module_param(reverse_scan, int, 0);
 361 module_param(hdr_channel, int, 0);
 362 module_param(max_ids, int, 0);
 363 module_param(rescan, int, 0);
 364 module_param(shared_access, int, 0);
 365 module_param(probe_eisa_isa, int, 0);
 366 module_param(force_dma32, int, 0);
 367 MODULE_AUTHOR("Achim Leubner");
 368 MODULE_LICENSE("GPL");
 369
 370 /* ioctl interface */
 371 static const struct file_operations gdth_fops = {
 372     .unlocked_ioctl   = gdth_unlocked_ioctl,
 373     .open    = gdth_open,
 374     .release = gdth_close,
 375     .llseek = noop_llseek,
 376 };
 377
 378 #include "gdth_proc.h"
 379 #include "gdth_proc.c"
 380
 381 static gdth_ha_str *gdth_find_ha(int hanum)
 382 {
 383         gdth_ha_str *ha;
 384
 385         list_for_each_entry(ha, &gdth_instances, list)
 386                 if (hanum == ha->hanum)
 387                         return ha;
 388
 389         return NULL;
 390 }
 391
 392 static struct gdth_cmndinfo *gdth_get_cmndinfo(gdth_ha_str *ha)
 393 {
 394         struct gdth_cmndinfo *priv = NULL;
 395         unsigned long flags;
 396         int i;
 397
 398         spin_lock_irqsave(&ha->smp_lock, flags);
 399
 400         for (i=0; i<GDTH_MAXCMDS; ++i) {
 401                 if (ha->cmndinfo[i].index == 0) {
 402                         priv = &ha->cmndinfo[i];
 403                         memset(priv, 0, sizeof(*priv));
 404                         priv->index = i+1;
 405                         break;
 406                 }
 407         }
 408
 409         spin_unlock_irqrestore(&ha->smp_lock, flags);
 410
 411         return priv;
 412 }
 413
 414 static void gdth_put_cmndinfo(struct gdth_cmndinfo *priv)
 415 {
 416         BUG_ON(!priv);
 417         priv->index = 0;
 418 }
 419
 420 static void gdth_delay(int milliseconds)
 421 {
 422     if (milliseconds == 0) {
 423         udelay(1);
 424     } else {
 425         mdelay(milliseconds);
 426     }
 427 }
 428
 429 static void gdth_scsi_done(struct scsi_cmnd *scp)
 430 {
 431         struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
 432         int internal_command = cmndinfo->internal_command;
 433
 434         TRACE2(("gdth_scsi_done()\n"));
 435
 436         gdth_put_cmndinfo(cmndinfo);
 437         scp->host_scribble = NULL;
 438
 439         if (internal_command)
 440                 complete((struct completion *)scp->request);
 441         else
 442                 scp->scsi_done(scp);
 443 }
 444
 445 int __gdth_execute(struct scsi_device *sdev, gdth_cmd_str *gdtcmd, char *cmnd,
 446                    int timeout, u32 *info)
 447 {
 448     gdth_ha_str *ha = shost_priv(sdev->host);
 449     Scsi_Cmnd *scp;
 450     struct gdth_cmndinfo cmndinfo;
 451     DECLARE_COMPLETION_ONSTACK(wait);
 452     int rval;
 453
 454     scp = kzalloc(sizeof(*scp), GFP_KERNEL);
 455     if (!scp)
 456         return -ENOMEM;
 457
 458     scp->sense_buffer = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
 459     if (!scp->sense_buffer) {
 460         kfree(scp);
 461         return -ENOMEM;
 462     }
 463
 464     scp->device = sdev;
 465     memset(&cmndinfo, 0, sizeof(cmndinfo));
 466
 467     /* use request field to save the ptr. to completion struct. */
 468     scp->request = (struct request *)&wait;
 469     scp->cmd_len = 12;
 470     scp->cmnd = cmnd;
 471     cmndinfo.priority = IOCTL_PRI;
 472     cmndinfo.internal_cmd_str = gdtcmd;
 473     cmndinfo.internal_command = 1;
 474
 475     TRACE(("__gdth_execute() cmd 0x%x\n", scp->cmnd[0]));
 476     __gdth_queuecommand(ha, scp, &cmndinfo);
 477
 478     wait_for_completion(&wait);
 479
 480     rval = cmndinfo.status;
 481     if (info)
 482         *info = cmndinfo.info;
 483     kfree(scp->sense_buffer);
 484     kfree(scp);
 485     return rval;
 486 }
 487
 488 int gdth_execute(struct Scsi_Host *shost, gdth_cmd_str *gdtcmd, char *cmnd,
 489                  int timeout, u32 *info)
 490 {
 491     struct scsi_device *sdev = scsi_get_host_dev(shost);
 492     int rval = __gdth_execute(sdev, gdtcmd, cmnd, timeout, info);
 493
 494     scsi_free_host_dev(sdev);
 495     return rval;
 496 }
 497
 498 static void gdth_eval_mapping(u32 size, u32 *cyls, int *heads, int *secs)
 499 {
 500     *cyls = size /HEADS/SECS;
 501     if (*cyls <= MAXCYLS) {
 502         *heads = HEADS;
 503         *secs = SECS;
 504     } else {                                        /* too high for 64*32 */
 505         *cyls = size /MEDHEADS/MEDSECS;
 506         if (*cyls <= MAXCYLS) {
 507             *heads = MEDHEADS;
 508             *secs = MEDSECS;
 509         } else {                                    /* too high for 127*63 */
 510             *cyls = size /BIGHEADS/BIGSECS;
 511             *heads = BIGHEADS;
 512             *secs = BIGSECS;
 513         }
 514     }
 515 }
 516
 517 /* controller search and initialization functions */
 518 #ifdef CONFIG_EISA
 519 static int __init gdth_search_eisa(u16 eisa_adr)
 520 {
 521     u32 id;
 522
 523     TRACE(("gdth_search_eisa() adr. %x\n",eisa_adr));
 524     id = inl(eisa_adr+ID0REG);
 525     if (id == GDT3A_ID || id == GDT3B_ID) {     /* GDT3000A or GDT3000B */
 526         if ((inb(eisa_adr+EISAREG) & 8) == 0)
 527             return 0;                           /* not EISA configured */
 528         return 1;
 529     }
 530     if (id == GDT3_ID)                          /* GDT3000 */
 531         return 1;
 532
 533     return 0;
 534 }
 535 #endif /* CONFIG_EISA */
 536
 537 #ifdef CONFIG_ISA
 538 static int __init gdth_search_isa(u32 bios_adr)
 539 {
 540     void __iomem *addr;
 541     u32 id;
 542
 543     TRACE(("gdth_search_isa() bios adr. %x\n",bios_adr));
 544     if ((addr = ioremap(bios_adr+BIOS_ID_OFFS, sizeof(u32))) != NULL) {
 545         id = readl(addr);
 546         iounmap(addr);
 547         if (id == GDT2_ID)                          /* GDT2000 */
 548             return 1;
 549     }
 550     return 0;
 551 }
 552 #endif /* CONFIG_ISA */
 553
 554 #ifdef CONFIG_PCI
 555
 556 static bool gdth_search_vortex(u16 device)
 557 {
 558         if (device <= PCI_DEVICE_ID_VORTEX_GDT6555)
 559                 return true;
 560         if (device >= PCI_DEVICE_ID_VORTEX_GDT6x17RP &&
 561             device <= PCI_DEVICE_ID_VORTEX_GDTMAXRP)
 562                 return true;
 563         if (device == PCI_DEVICE_ID_VORTEX_GDTNEWRX ||
 564             device == PCI_DEVICE_ID_VORTEX_GDTNEWRX2)
 565                 return true;
 566         return false;
 567 }
 568
 569 static int gdth_pci_probe_one(gdth_pci_str *pcistr, gdth_ha_str **ha_out);
 570 static int gdth_pci_init_one(struct pci_dev *pdev,
 571                              const struct pci_device_id *ent);
 572 static void gdth_pci_remove_one(struct pci_dev *pdev);
 573 static void gdth_remove_one(gdth_ha_str *ha);
 574
 575 /* Vortex only makes RAID controllers.
 576  * We do not really want to specify all 550 ids here, so wildcard match.
 577  */
 578 static const struct pci_device_id gdthtable[] = {
 579         { PCI_VDEVICE(VORTEX, PCI_ANY_ID) },
 580         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_SRC) },
 581         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_SRC_XSCALE) },
 582         { }     /* terminate list */
 583 };
 584 MODULE_DEVICE_TABLE(pci, gdthtable);
 585
 586 static struct pci_driver gdth_pci_driver = {
 587         .name           = "gdth",
 588         .id_table       = gdthtable,
 589         .probe          = gdth_pci_init_one,
 590         .remove         = gdth_pci_remove_one,
 591 };
 592
 593 static void gdth_pci_remove_one(struct pci_dev *pdev)
 594 {
 595         gdth_ha_str *ha = pci_get_drvdata(pdev);
 596
 597         pci_set_drvdata(pdev, NULL);
 598
 599         list_del(&ha->list);
 600         gdth_remove_one(ha);
 601
 602         pci_disable_device(pdev);
 603 }
 604
 605 static int gdth_pci_init_one(struct pci_dev *pdev,
 606                              const struct pci_device_id *ent)
 607 {
 608         u16 vendor = pdev->vendor;
 609         u16 device = pdev->device;
 610         unsigned long base0, base1, base2;
 611         int rc;
 612         gdth_pci_str gdth_pcistr;
 613         gdth_ha_str *ha = NULL;
 614
 615         TRACE(("gdth_search_dev() cnt %d vendor %x device %x\n",
 616                gdth_ctr_count, vendor, device));
 617
 618         memset(&gdth_pcistr, 0, sizeof(gdth_pcistr));
 619
 620         if (vendor == PCI_VENDOR_ID_VORTEX && !gdth_search_vortex(device))
 621                 return -ENODEV;
 622
 623         rc = pci_enable_device(pdev);
 624         if (rc)
 625                 return rc;
 626
 627         if (gdth_ctr_count >= MAXHA)
 628                 return -EBUSY;
 629
 630         /* GDT PCI controller found, resources are already in pdev */
 631         gdth_pcistr.pdev = pdev;
 632         base0 = pci_resource_flags(pdev, 0);
 633         base1 = pci_resource_flags(pdev, 1);
 634         base2 = pci_resource_flags(pdev, 2);
 635         if (device <= PCI_DEVICE_ID_VORTEX_GDT6000B ||   /* GDT6000/B */
 636             device >= PCI_DEVICE_ID_VORTEX_GDT6x17RP) {  /* MPR */
 637             if (!(base0 & IORESOURCE_MEM))
 638                 return -ENODEV;
 639             gdth_pcistr.dpmem = pci_resource_start(pdev, 0);
 640         } else {                                  /* GDT6110, GDT6120, .. */
 641             if (!(base0 & IORESOURCE_MEM) ||
 642                 !(base2 & IORESOURCE_MEM) ||
 643                 !(base1 & IORESOURCE_IO))
 644                 return -ENODEV;
 645             gdth_pcistr.dpmem = pci_resource_start(pdev, 2);
 646             gdth_pcistr.io    = pci_resource_start(pdev, 1);
 647         }
 648         TRACE2(("Controller found at %d/%d, irq %d, dpmem 0x%lx\n",
 649                 gdth_pcistr.pdev->bus->number,
 650                 PCI_SLOT(gdth_pcistr.pdev->devfn),
 651                 gdth_pcistr.irq,
 652                 gdth_pcistr.dpmem));
 653
 654         rc = gdth_pci_probe_one(&gdth_pcistr, &ha);
 655         if (rc)
 656                 return rc;
 657
 658         return 0;
 659 }
 660 #endif /* CONFIG_PCI */
 661
 662 #ifdef CONFIG_EISA
 663 static int __init gdth_init_eisa(u16 eisa_adr,gdth_ha_str *ha)
 664 {
 665     u32 retries,id;
 666     u8 prot_ver,eisacf,i,irq_found;
 667
 668     TRACE(("gdth_init_eisa() adr. %x\n",eisa_adr));
 669
 670     /* disable board interrupts, deinitialize services */
 671     outb(0xff,eisa_adr+EDOORREG);
 672     outb(0x00,eisa_adr+EDENABREG);
 673     outb(0x00,eisa_adr+EINTENABREG);
 674
 675     outb(0xff,eisa_adr+LDOORREG);
 676     retries = INIT_RETRIES;
 677     gdth_delay(20);
 678     while (inb(eisa_adr+EDOORREG) != 0xff) {
 679         if (--retries == 0) {
 680             printk("GDT-EISA: Initialization error (DEINIT failed)\n");
 681             return 0;
 682         }
 683         gdth_delay(1);
 684         TRACE2(("wait for DEINIT: retries=%d\n",retries));
 685     }
 686     prot_ver = inb(eisa_adr+MAILBOXREG);
 687     outb(0xff,eisa_adr+EDOORREG);
 688     if (prot_ver != PROTOCOL_VERSION) {
 689         printk("GDT-EISA: Illegal protocol version\n");
 690         return 0;
 691     }
 692     ha->bmic = eisa_adr;
 693     ha->brd_phys = (u32)eisa_adr >> 12;
 694
 695     outl(0,eisa_adr+MAILBOXREG);
 696     outl(0,eisa_adr+MAILBOXREG+4);
 697     outl(0,eisa_adr+MAILBOXREG+8);
 698     outl(0,eisa_adr+MAILBOXREG+12);
 699
 700     /* detect IRQ */
 701     if ((id = inl(eisa_adr+ID0REG)) == GDT3_ID) {
 702         ha->oem_id = OEM_ID_ICP;
 703         ha->type = GDT_EISA;
 704         ha->stype = id;
 705         outl(1,eisa_adr+MAILBOXREG+8);
 706         outb(0xfe,eisa_adr+LDOORREG);
 707         retries = INIT_RETRIES;
 708         gdth_delay(20);
 709         while (inb(eisa_adr+EDOORREG) != 0xfe) {
 710             if (--retries == 0) {
 711                 printk("GDT-EISA: Initialization error (get IRQ failed)\n");
 712                 return 0;
 713             }
 714             gdth_delay(1);
 715         }
 716         ha->irq = inb(eisa_adr+MAILBOXREG);
 717         outb(0xff,eisa_adr+EDOORREG);
 718         TRACE2(("GDT3000/3020: IRQ=%d\n",ha->irq));
 719         /* check the result */
 720         if (ha->irq == 0) {
 721                 TRACE2(("Unknown IRQ, use IRQ table from cmd line !\n"));
 722                 for (i = 0, irq_found = FALSE;
 723                      i < MAXHA && irq[i] != 0xff; ++i) {
 724                 if (irq[i]==10 || irq[i]==11 || irq[i]==12 || irq[i]==14) {
 725                     irq_found = TRUE;
 726                     break;
 727                 }
 728                 }
 729             if (irq_found) {
 730                 ha->irq = irq[i];
 731                 irq[i] = 0;
 732                 printk("GDT-EISA: Can not detect controller IRQ,\n");
 733                 printk("Use IRQ setting from command line (IRQ = %d)\n",
 734                        ha->irq);
 735             } else {
 736                 printk("GDT-EISA: Initialization error (unknown IRQ), Enable\n");
 737                 printk("the controller BIOS or use command line parameters\n");
 738                 return 0;
 739             }
 740         }
 741     } else {
 742         eisacf = inb(eisa_adr+EISAREG) & 7;
 743         if (eisacf > 4)                         /* level triggered */
 744             eisacf -= 4;
 745         ha->irq = gdth_irq_tab[eisacf];
 746         ha->oem_id = OEM_ID_ICP;
 747         ha->type = GDT_EISA;
 748         ha->stype = id;
 749     }
 750
 751     ha->dma64_support = 0;
 752     return 1;
 753 }
 754 #endif /* CONFIG_EISA */
 755
 756 #ifdef CONFIG_ISA
 757 static int __init gdth_init_isa(u32 bios_adr,gdth_ha_str *ha)
 758 {
 759     register gdt2_dpram_str __iomem *dp2_ptr;
 760     int i;
 761     u8 irq_drq,prot_ver;
 762     u32 retries;
 763
 764     TRACE(("gdth_init_isa() bios adr. %x\n",bios_adr));
 765
 766     ha->brd = ioremap(bios_adr, sizeof(gdt2_dpram_str));
 767     if (ha->brd == NULL) {
 768         printk("GDT-ISA: Initialization error (DPMEM remap error)\n");
 769         return 0;
 770     }
 771     dp2_ptr = ha->brd;
 772     writeb(1, &dp2_ptr->io.memlock); /* switch off write protection */
 773     /* reset interface area */
 774     memset_io(&dp2_ptr->u, 0, sizeof(dp2_ptr->u));
 775     if (readl(&dp2_ptr->u) != 0) {
 776         printk("GDT-ISA: Initialization error (DPMEM write error)\n");
 777         iounmap(ha->brd);
 778         return 0;
 779     }
 780
 781     /* disable board interrupts, read DRQ and IRQ */
 782     writeb(0xff, &dp2_ptr->io.irqdel);
 783     writeb(0x00, &dp2_ptr->io.irqen);
 784     writeb(0x00, &dp2_ptr->u.ic.S_Status);
 785     writeb(0x00, &dp2_ptr->u.ic.Cmd_Index);
 786
 787     irq_drq = readb(&dp2_ptr->io.rq);
 788     for (i=0; i<3; ++i) {
 789         if ((irq_drq & 1)==0)
 790             break;
 791         irq_drq >>= 1;
 792     }
 793     ha->drq = gdth_drq_tab[i];
 794
 795     irq_drq = readb(&dp2_ptr->io.rq) >> 3;
 796     for (i=1; i<5; ++i) {
 797         if ((irq_drq & 1)==0)
 798             break;
 799         irq_drq >>= 1;
 800     }
 801     ha->irq = gdth_irq_tab[i];
 802
 803     /* deinitialize services */
 804     writel(bios_adr, &dp2_ptr->u.ic.S_Info[0]);
 805     writeb(0xff, &dp2_ptr->u.ic.S_Cmd_Indx);
 806     writeb(0, &dp2_ptr->io.event);
 807     retries = INIT_RETRIES;
 808     gdth_delay(20);
 809     while (readb(&dp2_ptr->u.ic.S_Status) != 0xff) {
 810         if (--retries == 0) {
 811             printk("GDT-ISA: Initialization error (DEINIT failed)\n");
 812             iounmap(ha->brd);
 813             return 0;
 814         }
 815         gdth_delay(1);
 816     }
 817     prot_ver = (u8)readl(&dp2_ptr->u.ic.S_Info[0]);
 818     writeb(0, &dp2_ptr->u.ic.Status);
 819     writeb(0xff, &dp2_ptr->io.irqdel);
 820     if (prot_ver != PROTOCOL_VERSION) {
 821         printk("GDT-ISA: Illegal protocol version\n");
 822         iounmap(ha->brd);
 823         return 0;
 824     }
 825
 826     ha->oem_id = OEM_ID_ICP;
 827     ha->type = GDT_ISA;
 828     ha->ic_all_size = sizeof(dp2_ptr->u);
 829     ha->stype= GDT2_ID;
 830     ha->brd_phys = bios_adr >> 4;
 831
 832     /* special request to controller BIOS */
 833     writel(0x00, &dp2_ptr->u.ic.S_Info[0]);
 834     writel(0x00, &dp2_ptr->u.ic.S_Info[1]);
 835     writel(0x01, &dp2_ptr->u.ic.S_Info[2]);
 836     writel(0x00, &dp2_ptr->u.ic.S_Info[3]);
 837     writeb(0xfe, &dp2_ptr->u.ic.S_Cmd_Indx);
 838     writeb(0, &dp2_ptr->io.event);
 839     retries = INIT_RETRIES;
 840     gdth_delay(20);
 841     while (readb(&dp2_ptr->u.ic.S_Status) != 0xfe) {
 842         if (--retries == 0) {
 843             printk("GDT-ISA: Initialization error\n");
 844             iounmap(ha->brd);
 845             return 0;
 846         }
 847         gdth_delay(1);
 848     }
 849     writeb(0, &dp2_ptr->u.ic.Status);
 850     writeb(0xff, &dp2_ptr->io.irqdel);
 851
 852     ha->dma64_support = 0;
 853     return 1;
 854 }
 855 #endif /* CONFIG_ISA */
 856
 857 #ifdef CONFIG_PCI
 858 static int gdth_init_pci(struct pci_dev *pdev, gdth_pci_str *pcistr,
 859                          gdth_ha_str *ha)
 860 {
 861     register gdt6_dpram_str __iomem *dp6_ptr;
 862     register gdt6c_dpram_str __iomem *dp6c_ptr;
 863     register gdt6m_dpram_str __iomem *dp6m_ptr;
 864     u32 retries;
 865     u8 prot_ver;
 866     u16 command;
 867     int i, found = FALSE;
 868
 869     TRACE(("gdth_init_pci()\n"));
 870
 871     if (pdev->vendor == PCI_VENDOR_ID_INTEL)
 872         ha->oem_id = OEM_ID_INTEL;
 873     else
 874         ha->oem_id = OEM_ID_ICP;
 875     ha->brd_phys = (pdev->bus->number << 8) | (pdev->devfn & 0xf8);
 876     ha->stype = (u32)pdev->device;
 877     ha->irq = pdev->irq;
 878     ha->pdev = pdev;
 879
 880     if (ha->pdev->device <= PCI_DEVICE_ID_VORTEX_GDT6000B) {  /* GDT6000/B */
 881         TRACE2(("init_pci() dpmem %lx irq %d\n",pcistr->dpmem,ha->irq));
 882         ha->brd = ioremap(pcistr->dpmem, sizeof(gdt6_dpram_str));
 883         if (ha->brd == NULL) {
 884             printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
 885             return 0;
 886         }
 887         /* check and reset interface area */
 888         dp6_ptr = ha->brd;
 889         writel(DPMEM_MAGIC, &dp6_ptr->u);
 890         if (readl(&dp6_ptr->u) != DPMEM_MAGIC) {
 891             printk("GDT-PCI: Cannot access DPMEM at 0x%lx (shadowed?)\n",
 892                    pcistr->dpmem);
 893             found = FALSE;
 894             for (i = 0xC8000; i < 0xE8000; i += 0x4000) {
 895                 iounmap(ha->brd);
 896                 ha->brd = ioremap(i, sizeof(u16));
 897                 if (ha->brd == NULL) {
 898                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
 899                     return 0;
 900                 }
 901                 if (readw(ha->brd) != 0xffff) {
 902                     TRACE2(("init_pci_old() address 0x%x busy\n", i));
 903                     continue;
 904                 }
 905                 iounmap(ha->brd);
 906                 pci_write_config_dword(pdev, PCI_BASE_ADDRESS_0, i);
 907                 ha->brd = ioremap(i, sizeof(gdt6_dpram_str));
 908                 if (ha->brd == NULL) {
 909                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
 910                     return 0;
 911                 }
 912                 dp6_ptr = ha->brd;
 913                 writel(DPMEM_MAGIC, &dp6_ptr->u);
 914                 if (readl(&dp6_ptr->u) == DPMEM_MAGIC) {
 915                     printk("GDT-PCI: Use free address at 0x%x\n", i);
 916                     found = TRUE;
 917                     break;
 918                 }
 919             }
 920             if (!found) {
 921                 printk("GDT-PCI: No free address found!\n");
 922                 iounmap(ha->brd);
 923                 return 0;
 924             }
 925         }
 926         memset_io(&dp6_ptr->u, 0, sizeof(dp6_ptr->u));
 927         if (readl(&dp6_ptr->u) != 0) {
 928             printk("GDT-PCI: Initialization error (DPMEM write error)\n");
 929             iounmap(ha->brd);
 930             return 0;
 931         }
 932
 933         /* disable board interrupts, deinit services */
 934         writeb(0xff, &dp6_ptr->io.irqdel);
 935         writeb(0x00, &dp6_ptr->io.irqen);
 936         writeb(0x00, &dp6_ptr->u.ic.S_Status);
 937         writeb(0x00, &dp6_ptr->u.ic.Cmd_Index);
 938
 939         writel(pcistr->dpmem, &dp6_ptr->u.ic.S_Info[0]);
 940         writeb(0xff, &dp6_ptr->u.ic.S_Cmd_Indx);
 941         writeb(0, &dp6_ptr->io.event);
 942         retries = INIT_RETRIES;
 943         gdth_delay(20);
 944         while (readb(&dp6_ptr->u.ic.S_Status) != 0xff) {
 945             if (--retries == 0) {
 946                 printk("GDT-PCI: Initialization error (DEINIT failed)\n");
 947                 iounmap(ha->brd);
 948                 return 0;
 949             }
 950             gdth_delay(1);
 951         }
 952         prot_ver = (u8)readl(&dp6_ptr->u.ic.S_Info[0]);
 953         writeb(0, &dp6_ptr->u.ic.S_Status);
 954         writeb(0xff, &dp6_ptr->io.irqdel);
 955         if (prot_ver != PROTOCOL_VERSION) {
 956             printk("GDT-PCI: Illegal protocol version\n");
 957             iounmap(ha->brd);
 958             return 0;
 959         }
 960
 961         ha->type = GDT_PCI;
 962         ha->ic_all_size = sizeof(dp6_ptr->u);
 963
 964         /* special command to controller BIOS */
 965         writel(0x00, &dp6_ptr->u.ic.S_Info[0]);
 966         writel(0x00, &dp6_ptr->u.ic.S_Info[1]);
 967         writel(0x00, &dp6_ptr->u.ic.S_Info[2]);
 968         writel(0x00, &dp6_ptr->u.ic.S_Info[3]);
 969         writeb(0xfe, &dp6_ptr->u.ic.S_Cmd_Indx);
 970         writeb(0, &dp6_ptr->io.event);
 971         retries = INIT_RETRIES;
 972         gdth_delay(20);
 973         while (readb(&dp6_ptr->u.ic.S_Status) != 0xfe) {
 974             if (--retries == 0) {
 975                 printk("GDT-PCI: Initialization error\n");
 976                 iounmap(ha->brd);
 977                 return 0;
 978             }
 979             gdth_delay(1);
 980         }
 981         writeb(0, &dp6_ptr->u.ic.S_Status);
 982         writeb(0xff, &dp6_ptr->io.irqdel);
 983
 984         ha->dma64_support = 0;
 985
 986     } else if (ha->pdev->device <= PCI_DEVICE_ID_VORTEX_GDT6555) { /* GDT6110, ... */
 987         ha->plx = (gdt6c_plx_regs *)pcistr->io;
 988         TRACE2(("init_pci_new() dpmem %lx irq %d\n",
 989             pcistr->dpmem,ha->irq));
 990         ha->brd = ioremap(pcistr->dpmem, sizeof(gdt6c_dpram_str));
 991         if (ha->brd == NULL) {
 992             printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
 993             iounmap(ha->brd);
 994             return 0;
 995         }
 996         /* check and reset interface area */
 997         dp6c_ptr = ha->brd;
 998         writel(DPMEM_MAGIC, &dp6c_ptr->u);
 999         if (readl(&dp6c_ptr->u) != DPMEM_MAGIC) {
1000             printk("GDT-PCI: Cannot access DPMEM at 0x%lx (shadowed?)\n",
1001                    pcistr->dpmem);
1002             found = FALSE;
1003             for (i = 0xC8000; i < 0xE8000; i += 0x4000) {
1004                 iounmap(ha->brd);
1005                 ha->brd = ioremap(i, sizeof(u16));
1006                 if (ha->brd == NULL) {
1007                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1008                     return 0;
1009                 }
1010                 if (readw(ha->brd) != 0xffff) {
1011                     TRACE2(("init_pci_plx() address 0x%x busy\n", i));
1012                     continue;
1013                 }
1014                 iounmap(ha->brd);
1015                 pci_write_config_dword(pdev, PCI_BASE_ADDRESS_2, i);
1016                 ha->brd = ioremap(i, sizeof(gdt6c_dpram_str));
1017                 if (ha->brd == NULL) {
1018                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1019                     return 0;
1020                 }
1021                 dp6c_ptr = ha->brd;
1022                 writel(DPMEM_MAGIC, &dp6c_ptr->u);
1023                 if (readl(&dp6c_ptr->u) == DPMEM_MAGIC) {
1024                     printk("GDT-PCI: Use free address at 0x%x\n", i);
1025                     found = TRUE;
1026                     break;
1027                 }
1028             }
1029             if (!found) {
1030                 printk("GDT-PCI: No free address found!\n");
1031                 iounmap(ha->brd);
1032                 return 0;
1033             }
1034         }
1035         memset_io(&dp6c_ptr->u, 0, sizeof(dp6c_ptr->u));
1036         if (readl(&dp6c_ptr->u) != 0) {
1037             printk("GDT-PCI: Initialization error (DPMEM write error)\n");
1038             iounmap(ha->brd);
1039             return 0;
1040         }
1041
1042         /* disable board interrupts, deinit services */
1043         outb(0x00,PTR2USHORT(&ha->plx->control1));
1044         outb(0xff,PTR2USHORT(&ha->plx->edoor_reg));
1045
1046         writeb(0x00, &dp6c_ptr->u.ic.S_Status);
1047         writeb(0x00, &dp6c_ptr->u.ic.Cmd_Index);
1048
1049         writel(pcistr->dpmem, &dp6c_ptr->u.ic.S_Info[0]);
1050         writeb(0xff, &dp6c_ptr->u.ic.S_Cmd_Indx);
1051
1052         outb(1,PTR2USHORT(&ha->plx->ldoor_reg));
1053
1054         retries = INIT_RETRIES;
1055         gdth_delay(20);
1056         while (readb(&dp6c_ptr->u.ic.S_Status) != 0xff) {
1057             if (--retries == 0) {
1058                 printk("GDT-PCI: Initialization error (DEINIT failed)\n");
1059                 iounmap(ha->brd);
1060                 return 0;
1061             }
1062             gdth_delay(1);
1063         }
1064         prot_ver = (u8)readl(&dp6c_ptr->u.ic.S_Info[0]);
1065         writeb(0, &dp6c_ptr->u.ic.Status);
1066         if (prot_ver != PROTOCOL_VERSION) {
1067             printk("GDT-PCI: Illegal protocol version\n");
1068             iounmap(ha->brd);
1069             return 0;
1070         }
1071
1072         ha->type = GDT_PCINEW;
1073         ha->ic_all_size = sizeof(dp6c_ptr->u);
1074
1075         /* special command to controller BIOS */
1076         writel(0x00, &dp6c_ptr->u.ic.S_Info[0]);
1077         writel(0x00, &dp6c_ptr->u.ic.S_Info[1]);
1078         writel(0x00, &dp6c_ptr->u.ic.S_Info[2]);
1079         writel(0x00, &dp6c_ptr->u.ic.S_Info[3]);
1080         writeb(0xfe, &dp6c_ptr->u.ic.S_Cmd_Indx);
1081
1082         outb(1,PTR2USHORT(&ha->plx->ldoor_reg));
1083
1084         retries = INIT_RETRIES;
1085         gdth_delay(20);
1086         while (readb(&dp6c_ptr->u.ic.S_Status) != 0xfe) {
1087             if (--retries == 0) {
1088                 printk("GDT-PCI: Initialization error\n");
1089                 iounmap(ha->brd);
1090                 return 0;
1091             }
1092             gdth_delay(1);
1093         }
1094         writeb(0, &dp6c_ptr->u.ic.S_Status);
1095
1096         ha->dma64_support = 0;
1097
1098     } else {                                            /* MPR */
1099         TRACE2(("init_pci_mpr() dpmem %lx irq %d\n",pcistr->dpmem,ha->irq));
1100         ha->brd = ioremap(pcistr->dpmem, sizeof(gdt6m_dpram_str));
1101         if (ha->brd == NULL) {
1102             printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1103             return 0;
1104         }
1105
1106         /* manipulate config. space to enable DPMEM, start RP controller */
1107         pci_read_config_word(pdev, PCI_COMMAND, &command);
1108         command |= 6;
1109         pci_write_config_word(pdev, PCI_COMMAND, command);
1110         gdth_delay(1);
1111
1112         dp6m_ptr = ha->brd;
1113
1114         /* Ensure that it is safe to access the non HW portions of DPMEM.
1115          * Aditional check needed for Xscale based RAID controllers */
1116         while( ((int)readb(&dp6m_ptr->i960r.sema0_reg) ) & 3 )
1117             gdth_delay(1);
1118
1119         /* check and reset interface area */
1120         writel(DPMEM_MAGIC, &dp6m_ptr->u);
1121         if (readl(&dp6m_ptr->u) != DPMEM_MAGIC) {
1122             printk("GDT-PCI: Cannot access DPMEM at 0x%lx (shadowed?)\n",
1123                    pcistr->dpmem);
1124             found = FALSE;
1125             for (i = 0xC8000; i < 0xE8000; i += 0x4000) {
1126                 iounmap(ha->brd);
1127                 ha->brd = ioremap(i, sizeof(u16));
1128                 if (ha->brd == NULL) {
1129                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1130                     return 0;
1131                 }
1132                 if (readw(ha->brd) != 0xffff) {
1133                     TRACE2(("init_pci_mpr() address 0x%x busy\n", i));
1134                     continue;
1135                 }
1136                 iounmap(ha->brd);
1137                 pci_write_config_dword(pdev, PCI_BASE_ADDRESS_0, i);
1138                 ha->brd = ioremap(i, sizeof(gdt6m_dpram_str));
1139                 if (ha->brd == NULL) {
1140                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1141                     return 0;
1142                 }
1143                 dp6m_ptr = ha->brd;
1144                 writel(DPMEM_MAGIC, &dp6m_ptr->u);
1145                 if (readl(&dp6m_ptr->u) == DPMEM_MAGIC) {
1146                     printk("GDT-PCI: Use free address at 0x%x\n", i);
1147                     found = TRUE;
1148                     break;
1149                 }
1150             }
1151             if (!found) {
1152                 printk("GDT-PCI: No free address found!\n");
1153                 iounmap(ha->brd);
1154                 return 0;
1155             }
1156         }
1157         memset_io(&dp6m_ptr->u, 0, sizeof(dp6m_ptr->u));
1158
1159         /* disable board interrupts, deinit services */
1160         writeb(readb(&dp6m_ptr->i960r.edoor_en_reg) | 4,
1161                     &dp6m_ptr->i960r.edoor_en_reg);
1162         writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
1163         writeb(0x00, &dp6m_ptr->u.ic.S_Status);
1164         writeb(0x00, &dp6m_ptr->u.ic.Cmd_Index);
1165
1166         writel(pcistr->dpmem, &dp6m_ptr->u.ic.S_Info[0]);
1167         writeb(0xff, &dp6m_ptr->u.ic.S_Cmd_Indx);
1168         writeb(1, &dp6m_ptr->i960r.ldoor_reg);
1169         retries = INIT_RETRIES;
1170         gdth_delay(20);
1171         while (readb(&dp6m_ptr->u.ic.S_Status) != 0xff) {
1172             if (--retries == 0) {
1173                 printk("GDT-PCI: Initialization error (DEINIT failed)\n");
1174                 iounmap(ha->brd);
1175                 return 0;
1176             }
1177             gdth_delay(1);
1178         }
1179         prot_ver = (u8)readl(&dp6m_ptr->u.ic.S_Info[0]);
1180         writeb(0, &dp6m_ptr->u.ic.S_Status);
1181         if (prot_ver != PROTOCOL_VERSION) {
1182             printk("GDT-PCI: Illegal protocol version\n");
1183             iounmap(ha->brd);
1184             return 0;
1185         }
1186
1187         ha->type = GDT_PCIMPR;
1188         ha->ic_all_size = sizeof(dp6m_ptr->u);
1189
1190         /* special command to controller BIOS */
1191         writel(0x00, &dp6m_ptr->u.ic.S_Info[0]);
1192         writel(0x00, &dp6m_ptr->u.ic.S_Info[1]);
1193         writel(0x00, &dp6m_ptr->u.ic.S_Info[2]);
1194         writel(0x00, &dp6m_ptr->u.ic.S_Info[3]);
1195         writeb(0xfe, &dp6m_ptr->u.ic.S_Cmd_Indx);
1196         writeb(1, &dp6m_ptr->i960r.ldoor_reg);
1197         retries = INIT_RETRIES;
1198         gdth_delay(20);
1199         while (readb(&dp6m_ptr->u.ic.S_Status) != 0xfe) {
1200             if (--retries == 0) {
1201                 printk("GDT-PCI: Initialization error\n");
1202                 iounmap(ha->brd);
1203                 return 0;
1204             }
1205             gdth_delay(1);
1206         }
1207         writeb(0, &dp6m_ptr->u.ic.S_Status);
1208
1209         /* read FW version to detect 64-bit DMA support */
1210         writeb(0xfd, &dp6m_ptr->u.ic.S_Cmd_Indx);
1211         writeb(1, &dp6m_ptr->i960r.ldoor_reg);
1212         retries = INIT_RETRIES;
1213         gdth_delay(20);
1214         while (readb(&dp6m_ptr->u.ic.S_Status) != 0xfd) {
1215             if (--retries == 0) {
1216                 printk("GDT-PCI: Initialization error (DEINIT failed)\n");
1217                 iounmap(ha->brd);
1218                 return 0;
1219             }
1220             gdth_delay(1);
1221         }
1222         prot_ver = (u8)(readl(&dp6m_ptr->u.ic.S_Info[0]) >> 16);
1223         writeb(0, &dp6m_ptr->u.ic.S_Status);
1224         if (prot_ver < 0x2b)      /* FW < x.43: no 64-bit DMA support */
1225             ha->dma64_support = 0;
1226         else
1227             ha->dma64_support = 1;
1228     }
1229
1230     return 1;
1231 }
1232 #endif /* CONFIG_PCI */
1233
1234 /* controller protocol functions */
1235
1236 static void gdth_enable_int(gdth_ha_str *ha)
1237 {
1238     unsigned long flags;
1239     gdt2_dpram_str __iomem *dp2_ptr;
1240     gdt6_dpram_str __iomem *dp6_ptr;
1241     gdt6m_dpram_str __iomem *dp6m_ptr;
1242
1243     TRACE(("gdth_enable_int() hanum %d\n",ha->hanum));
1244     spin_lock_irqsave(&ha->smp_lock, flags);
1245
1246     if (ha->type == GDT_EISA) {
1247         outb(0xff, ha->bmic + EDOORREG);
1248         outb(0xff, ha->bmic + EDENABREG);
1249         outb(0x01, ha->bmic + EINTENABREG);
1250     } else if (ha->type == GDT_ISA) {
1251         dp2_ptr = ha->brd;
1252         writeb(1, &dp2_ptr->io.irqdel);
1253         writeb(0, &dp2_ptr->u.ic.Cmd_Index);
1254         writeb(1, &dp2_ptr->io.irqen);
1255     } else if (ha->type == GDT_PCI) {
1256         dp6_ptr = ha->brd;
1257         writeb(1, &dp6_ptr->io.irqdel);
1258         writeb(0, &dp6_ptr->u.ic.Cmd_Index);
1259         writeb(1, &dp6_ptr->io.irqen);
1260     } else if (ha->type == GDT_PCINEW) {
1261         outb(0xff, PTR2USHORT(&ha->plx->edoor_reg));
1262         outb(0x03, PTR2USHORT(&ha->plx->control1));
1263     } else if (ha->type == GDT_PCIMPR) {
1264         dp6m_ptr = ha->brd;
1265         writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
1266         writeb(readb(&dp6m_ptr->i960r.edoor_en_reg) & ~4,
1267                     &dp6m_ptr->i960r.edoor_en_reg);
1268     }
1269     spin_unlock_irqrestore(&ha->smp_lock, flags);
1270 }
1271
1272 /* return IStatus if interrupt was from this card else 0 */
1273 static u8 gdth_get_status(gdth_ha_str *ha)
1274 {
1275     u8 IStatus = 0;
1276
1277     TRACE(("gdth_get_status() irq %d ctr_count %d\n", ha->irq, gdth_ctr_count));
1278
1279         if (ha->type == GDT_EISA)
1280             IStatus = inb((u16)ha->bmic + EDOORREG);
1281         else if (ha->type == GDT_ISA)
1282             IStatus =
1283                 readb(&((gdt2_dpram_str __iomem *)ha->brd)->u.ic.Cmd_Index);
1284         else if (ha->type == GDT_PCI)
1285             IStatus =
1286                 readb(&((gdt6_dpram_str __iomem *)ha->brd)->u.ic.Cmd_Index);
1287         else if (ha->type == GDT_PCINEW)
1288             IStatus = inb(PTR2USHORT(&ha->plx->edoor_reg));
1289         else if (ha->type == GDT_PCIMPR)
1290             IStatus =
1291                 readb(&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.edoor_reg);
1292
1293         return IStatus;
1294 }
1295
1296 static int gdth_test_busy(gdth_ha_str *ha)
1297 {
1298     register int gdtsema0 = 0;
1299
1300     TRACE(("gdth_test_busy() hanum %d\n", ha->hanum));
1301
1302     if (ha->type == GDT_EISA)
1303         gdtsema0 = (int)inb(ha->bmic + SEMA0REG);
1304     else if (ha->type == GDT_ISA)
1305         gdtsema0 = (int)readb(&((gdt2_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
1306     else if (ha->type == GDT_PCI)
1307         gdtsema0 = (int)readb(&((gdt6_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
1308     else if (ha->type == GDT_PCINEW)
1309         gdtsema0 = (int)inb(PTR2USHORT(&ha->plx->sema0_reg));
1310     else if (ha->type == GDT_PCIMPR)
1311         gdtsema0 =
1312             (int)readb(&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.sema0_reg);
1313
1314     return (gdtsema0 & 1);
1315 }
1316
1317
1318 static int gdth_get_cmd_index(gdth_ha_str *ha)
1319 {
1320     int i;
1321
1322     TRACE(("gdth_get_cmd_index() hanum %d\n", ha->hanum));
1323
1324     for (i=0; i<GDTH_MAXCMDS; ++i) {
1325         if (ha->cmd_tab[i].cmnd == UNUSED_CMND) {
1326             ha->cmd_tab[i].cmnd = ha->pccb->RequestBuffer;
1327             ha->cmd_tab[i].service = ha->pccb->Service;
1328             ha->pccb->CommandIndex = (u32)i+2;
1329             return (i+2);
1330         }
1331     }
1332     return 0;
1333 }
1334
1335
1336 static void gdth_set_sema0(gdth_ha_str *ha)
1337 {
1338     TRACE(("gdth_set_sema0() hanum %d\n", ha->hanum));
1339
1340     if (ha->type == GDT_EISA) {
1341         outb(1, ha->bmic + SEMA0REG);
1342     } else if (ha->type == GDT_ISA) {
1343         writeb(1, &((gdt2_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
1344     } else if (ha->type == GDT_PCI) {
1345         writeb(1, &((gdt6_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
1346     } else if (ha->type == GDT_PCINEW) {
1347         outb(1, PTR2USHORT(&ha->plx->sema0_reg));
1348     } else if (ha->type == GDT_PCIMPR) {
1349         writeb(1, &((gdt6m_dpram_str __iomem *)ha->brd)->i960r.sema0_reg);
1350     }
1351 }
1352
1353
1354 static void gdth_copy_command(gdth_ha_str *ha)
1355 {
1356     register gdth_cmd_str *cmd_ptr;
1357     register gdt6m_dpram_str __iomem *dp6m_ptr;
1358     register gdt6c_dpram_str __iomem *dp6c_ptr;
1359     gdt6_dpram_str __iomem *dp6_ptr;
1360     gdt2_dpram_str __iomem *dp2_ptr;
1361     u16 cp_count,dp_offset,cmd_no;
1362
1363     TRACE(("gdth_copy_command() hanum %d\n", ha->hanum));
1364
1365     cp_count = ha->cmd_len;
1366     dp_offset= ha->cmd_offs_dpmem;
1367     cmd_no   = ha->cmd_cnt;
1368     cmd_ptr  = ha->pccb;
1369
1370     ++ha->cmd_cnt;
1371     if (ha->type == GDT_EISA)
1372         return;                                 /* no DPMEM, no copy */
1373
1374     /* set cpcount dword aligned */
1375     if (cp_count & 3)
1376         cp_count += (4 - (cp_count & 3));
1377
1378     ha->cmd_offs_dpmem += cp_count;
1379
1380     /* set offset and service, copy command to DPMEM */
1381     if (ha->type == GDT_ISA) {
1382         dp2_ptr = ha->brd;
1383         writew(dp_offset + DPMEM_COMMAND_OFFSET,
1384                     &dp2_ptr->u.ic.comm_queue[cmd_no].offset);
1385         writew((u16)cmd_ptr->Service,
1386                     &dp2_ptr->u.ic.comm_queue[cmd_no].serv_id);
1387         memcpy_toio(&dp2_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
1388     } else if (ha->type == GDT_PCI) {
1389         dp6_ptr = ha->brd;
1390         writew(dp_offset + DPMEM_COMMAND_OFFSET,
1391                     &dp6_ptr->u.ic.comm_queue[cmd_no].offset);
1392         writew((u16)cmd_ptr->Service,
1393                     &dp6_ptr->u.ic.comm_queue[cmd_no].serv_id);
1394         memcpy_toio(&dp6_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
1395     } else if (ha->type == GDT_PCINEW) {
1396         dp6c_ptr = ha->brd;
1397         writew(dp_offset + DPMEM_COMMAND_OFFSET,
1398                     &dp6c_ptr->u.ic.comm_queue[cmd_no].offset);
1399         writew((u16)cmd_ptr->Service,
1400                     &dp6c_ptr->u.ic.comm_queue[cmd_no].serv_id);
1401         memcpy_toio(&dp6c_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
1402     } else if (ha->type == GDT_PCIMPR) {
1403         dp6m_ptr = ha->brd;
1404         writew(dp_offset + DPMEM_COMMAND_OFFSET,
1405                     &dp6m_ptr->u.ic.comm_queue[cmd_no].offset);
1406         writew((u16)cmd_ptr->Service,
1407                     &dp6m_ptr->u.ic.comm_queue[cmd_no].serv_id);
1408         memcpy_toio(&dp6m_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
1409     }
1410 }
1411
1412
1413 static void gdth_release_event(gdth_ha_str *ha)
1414 {
1415     TRACE(("gdth_release_event() hanum %d\n", ha->hanum));
1416
1417 #ifdef GDTH_STATISTICS
1418     {
1419         u32 i,j;
1420         for (i=0,j=0; j<GDTH_MAXCMDS; ++j) {
1421             if (ha->cmd_tab[j].cmnd != UNUSED_CMND)
1422                 ++i;
1423         }
1424         if (max_index < i) {
1425             max_index = i;
1426             TRACE3(("GDT: max_index = %d\n",(u16)i));
1427         }
1428     }
1429 #endif
1430
1431     if (ha->pccb->OpCode == GDT_INIT)
1432         ha->pccb->Service |= 0x80;
1433
1434     if (ha->type == GDT_EISA) {
1435         if (ha->pccb->OpCode == GDT_INIT)               /* store DMA buffer */
1436             outl(ha->ccb_phys, ha->bmic + MAILBOXREG);
1437         outb(ha->pccb->Service, ha->bmic + LDOORREG);
1438     } else if (ha->type == GDT_ISA) {
1439         writeb(0, &((gdt2_dpram_str __iomem *)ha->brd)->io.event);
1440     } else if (ha->type == GDT_PCI) {
1441         writeb(0, &((gdt6_dpram_str __iomem *)ha->brd)->io.event);
1442     } else if (ha->type == GDT_PCINEW) {
1443         outb(1, PTR2USHORT(&ha->plx->ldoor_reg));
1444     } else if (ha->type == GDT_PCIMPR) {
1445         writeb(1, &((gdt6m_dpram_str __iomem *)ha->brd)->i960r.ldoor_reg);
1446     }
1447 }
1448
1449 static int gdth_wait(gdth_ha_str *ha, int index, u32 time)
1450 {
1451     int answer_found = FALSE;
1452     int wait_index = 0;
1453
1454     TRACE(("gdth_wait() hanum %d index %d time %d\n", ha->hanum, index, time));
1455
1456     if (index == 0)
1457         return 1;                               /* no wait required */
1458
1459     do {
1460         __gdth_interrupt(ha, true, &wait_index);
1461         if (wait_index == index) {
1462             answer_found = TRUE;
1463             break;
1464         }
1465         gdth_delay(1);
1466     } while (--time);
1467
1468     while (gdth_test_busy(ha))
1469         gdth_delay(0);
1470
1471     return (answer_found);
1472 }
1473
1474
1475 static int gdth_internal_cmd(gdth_ha_str *ha, u8 service, u16 opcode,
1476                                             u32 p1, u64 p2, u64 p3)
1477 {
1478     register gdth_cmd_str *cmd_ptr;
1479     int retries,index;
1480
1481     TRACE2(("gdth_internal_cmd() service %d opcode %d\n",service,opcode));
1482
1483     cmd_ptr = ha->pccb;
1484     memset((char*)cmd_ptr,0,sizeof(gdth_cmd_str));
1485
1486     /* make command  */
1487     for (retries = INIT_RETRIES;;) {
1488         cmd_ptr->Service          = service;
1489         cmd_ptr->RequestBuffer    = INTERNAL_CMND;
1490         if (!(index=gdth_get_cmd_index(ha))) {
1491             TRACE(("GDT: No free command index found\n"));
1492             return 0;
1493         }
1494         gdth_set_sema0(ha);
1495         cmd_ptr->OpCode           = opcode;
1496         cmd_ptr->BoardNode        = LOCALBOARD;
1497         if (service == CACHESERVICE) {
1498             if (opcode == GDT_IOCTL) {
1499                 cmd_ptr->u.ioctl.subfunc = p1;
1500                 cmd_ptr->u.ioctl.channel = (u32)p2;
1501                 cmd_ptr->u.ioctl.param_size = (u16)p3;
1502                 cmd_ptr->u.ioctl.p_param = ha->scratch_phys;
1503             } else {
1504                 if (ha->cache_feat & GDT_64BIT) {
1505                     cmd_ptr->u.cache64.DeviceNo = (u16)p1;
1506                     cmd_ptr->u.cache64.BlockNo  = p2;
1507                 } else {
1508                     cmd_ptr->u.cache.DeviceNo = (u16)p1;
1509                     cmd_ptr->u.cache.BlockNo  = (u32)p2;
1510                 }
1511             }
1512         } else if (service == SCSIRAWSERVICE) {
1513             if (ha->raw_feat & GDT_64BIT) {
1514                 cmd_ptr->u.raw64.direction  = p1;
1515                 cmd_ptr->u.raw64.bus        = (u8)p2;
1516                 cmd_ptr->u.raw64.target     = (u8)p3;
1517                 cmd_ptr->u.raw64.lun        = (u8)(p3 >> 8);
1518             } else {
1519                 cmd_ptr->u.raw.direction  = p1;
1520                 cmd_ptr->u.raw.bus        = (u8)p2;
1521                 cmd_ptr->u.raw.target     = (u8)p3;
1522                 cmd_ptr->u.raw.lun        = (u8)(p3 >> 8);
1523             }
1524         } else if (service == SCREENSERVICE) {
1525             if (opcode == GDT_REALTIME) {
1526                 *(u32 *)&cmd_ptr->u.screen.su.data[0] = p1;
1527                 *(u32 *)&cmd_ptr->u.screen.su.data[4] = (u32)p2;
1528                 *(u32 *)&cmd_ptr->u.screen.su.data[8] = (u32)p3;
1529             }
1530         }
1531         ha->cmd_len          = sizeof(gdth_cmd_str);
1532         ha->cmd_offs_dpmem   = 0;
1533         ha->cmd_cnt          = 0;
1534         gdth_copy_command(ha);
1535         gdth_release_event(ha);
1536         gdth_delay(20);
1537         if (!gdth_wait(ha, index, INIT_TIMEOUT)) {
1538             printk("GDT: Initialization error (timeout service %d)\n",service);
1539             return 0;
1540         }
1541         if (ha->status != S_BSY || --retries == 0)
1542             break;
1543         gdth_delay(1);
1544     }
1545
1546     return (ha->status != S_OK ? 0:1);
1547 }
1548
1549
1550 /* search for devices */
1551
1552 static int gdth_search_drives(gdth_ha_str *ha)
1553 {
1554     u16 cdev_cnt, i;
1555     int ok;
1556     u32 bus_no, drv_cnt, drv_no, j;
1557     gdth_getch_str *chn;
1558     gdth_drlist_str *drl;
1559     gdth_iochan_str *ioc;
1560     gdth_raw_iochan_str *iocr;
1561     gdth_arcdl_str *alst;
1562     gdth_alist_str *alst2;
1563     gdth_oem_str_ioctl *oemstr;
1564 #ifdef INT_COAL
1565     gdth_perf_modes *pmod;
1566 #endif
1567
1568 #ifdef GDTH_RTC
1569     u8 rtc[12];
1570     unsigned long flags;
1571 #endif
1572
1573     TRACE(("gdth_search_drives() hanum %d\n", ha->hanum));
1574     ok = 0;
1575
1576     /* initialize controller services, at first: screen service */
1577     ha->screen_feat = 0;
1578     if (!force_dma32) {
1579         ok = gdth_internal_cmd(ha, SCREENSERVICE, GDT_X_INIT_SCR, 0, 0, 0);
1580         if (ok)
1581             ha->screen_feat = GDT_64BIT;
1582     }
1583     if (force_dma32 || (!ok && ha->status == (u16)S_NOFUNC))
1584         ok = gdth_internal_cmd(ha, SCREENSERVICE, GDT_INIT, 0, 0, 0);
1585     if (!ok) {
1586         printk("GDT-HA %d: Initialization error screen service (code %d)\n",
1587                ha->hanum, ha->status);
1588         return 0;
1589     }
1590     TRACE2(("gdth_search_drives(): SCREENSERVICE initialized\n"));
1591
1592 #ifdef GDTH_RTC
1593     /* read realtime clock info, send to controller */
1594     /* 1. wait for the falling edge of update flag */
1595     spin_lock_irqsave(&rtc_lock, flags);
1596     for (j = 0; j < 1000000; ++j)
1597         if (CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP)
1598             break;
1599     for (j = 0; j < 1000000; ++j)
1600         if (!(CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP))
1601             break;
1602     /* 2. read info */
1603     do {
1604         for (j = 0; j < 12; ++j)
1605             rtc[j] = CMOS_READ(j);
1606     } while (rtc[0] != CMOS_READ(0));
1607     spin_unlock_irqrestore(&rtc_lock, flags);
1608     TRACE2(("gdth_search_drives(): RTC: %x/%x/%x\n",*(u32 *)&rtc[0],
1609             *(u32 *)&rtc[4], *(u32 *)&rtc[8]));
1610     /* 3. send to controller firmware */
1611     gdth_internal_cmd(ha, SCREENSERVICE, GDT_REALTIME, *(u32 *)&rtc[0],
1612                       *(u32 *)&rtc[4], *(u32 *)&rtc[8]);
1613 #endif
1614
1615     /* unfreeze all IOs */
1616     gdth_internal_cmd(ha, CACHESERVICE, GDT_UNFREEZE_IO, 0, 0, 0);
1617
1618     /* initialize cache service */
1619     ha->cache_feat = 0;
1620     if (!force_dma32) {
1621         ok = gdth_internal_cmd(ha, CACHESERVICE, GDT_X_INIT_HOST, LINUX_OS,
1622                                                                          0, 0);
1623         if (ok)
1624             ha->cache_feat = GDT_64BIT;
1625     }
1626     if (force_dma32 || (!ok && ha->status == (u16)S_NOFUNC))
1627         ok = gdth_internal_cmd(ha, CACHESERVICE, GDT_INIT, LINUX_OS, 0, 0);
1628     if (!ok) {
1629         printk("GDT-HA %d: Initialization error cache service (code %d)\n",
1630                ha->hanum, ha->status);
1631         return 0;
1632     }
1633     TRACE2(("gdth_search_drives(): CACHESERVICE initialized\n"));
1634     cdev_cnt = (u16)ha->info;
1635     ha->fw_vers = ha->service;
1636
1637 #ifdef INT_COAL
1638     if (ha->type == GDT_PCIMPR) {
1639         /* set perf. modes */
1640         pmod = (gdth_perf_modes *)ha->pscratch;
1641         pmod->version          = 1;
1642         pmod->st_mode          = 1;    /* enable one status buffer */
1643         *((u64 *)&pmod->st_buff_addr1) = ha->coal_stat_phys;
1644         pmod->st_buff_indx1    = COALINDEX;
1645         pmod->st_buff_addr2    = 0;
1646         pmod->st_buff_u_addr2  = 0;
1647         pmod->st_buff_indx2    = 0;
1648         pmod->st_buff_size     = sizeof(gdth_coal_status) * MAXOFFSETS;
1649         pmod->cmd_mode         = 0;    // disable all cmd buffers
1650         pmod->cmd_buff_addr1   = 0;
1651         pmod->cmd_buff_u_addr1 = 0;
1652         pmod->cmd_buff_indx1   = 0;
1653         pmod->cmd_buff_addr2   = 0;
1654         pmod->cmd_buff_u_addr2 = 0;
1655         pmod->cmd_buff_indx2   = 0;
1656         pmod->cmd_buff_size    = 0;
1657         pmod->reserved1        = 0;
1658         pmod->reserved2        = 0;
1659         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, SET_PERF_MODES,
1660                               INVALID_CHANNEL,sizeof(gdth_perf_modes))) {
1661             printk("GDT-HA %d: Interrupt coalescing activated\n", ha->hanum);
1662         }
1663     }
1664 #endif
1665
1666     /* detect number of buses - try new IOCTL */
1667     iocr = (gdth_raw_iochan_str *)ha->pscratch;
1668     iocr->hdr.version        = 0xffffffff;
1669     iocr->hdr.list_entries   = MAXBUS;
1670     iocr->hdr.first_chan     = 0;
1671     iocr->hdr.last_chan      = MAXBUS-1;
1672     iocr->hdr.list_offset    = GDTOFFSOF(gdth_raw_iochan_str, list[0]);
1673     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, IOCHAN_RAW_DESC,
1674                           INVALID_CHANNEL,sizeof(gdth_raw_iochan_str))) {
1675         TRACE2(("IOCHAN_RAW_DESC supported!\n"));
1676         ha->bus_cnt = iocr->hdr.chan_count;
1677         for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
1678             if (iocr->list[bus_no].proc_id < MAXID)
1679                 ha->bus_id[bus_no] = iocr->list[bus_no].proc_id;
1680             else
1681                 ha->bus_id[bus_no] = 0xff;
1682         }
1683     } else {
1684         /* old method */
1685         chn = (gdth_getch_str *)ha->pscratch;
1686         for (bus_no = 0; bus_no < MAXBUS; ++bus_no) {
1687             chn->channel_no = bus_no;
1688             if (!gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1689                                    SCSI_CHAN_CNT | L_CTRL_PATTERN,
1690                                    IO_CHANNEL | INVALID_CHANNEL,
1691                                    sizeof(gdth_getch_str))) {
1692                 if (bus_no == 0) {
1693                     printk("GDT-HA %d: Error detecting channel count (0x%x)\n",
1694                            ha->hanum, ha->status);
1695                     return 0;
1696                 }
1697                 break;
1698             }
1699             if (chn->siop_id < MAXID)
1700                 ha->bus_id[bus_no] = chn->siop_id;
1701             else
1702                 ha->bus_id[bus_no] = 0xff;
1703         }
1704         ha->bus_cnt = (u8)bus_no;
1705     }
1706     TRACE2(("gdth_search_drives() %d channels\n",ha->bus_cnt));
1707
1708     /* read cache configuration */
1709     if (!gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, CACHE_INFO,
1710                            INVALID_CHANNEL,sizeof(gdth_cinfo_str))) {
1711         printk("GDT-HA %d: Initialization error cache service (code %d)\n",
1712                ha->hanum, ha->status);
1713         return 0;
1714     }
1715     ha->cpar = ((gdth_cinfo_str *)ha->pscratch)->cpar;
1716     TRACE2(("gdth_search_drives() cinfo: vs %x sta %d str %d dw %d b %d\n",
1717             ha->cpar.version,ha->cpar.state,ha->cpar.strategy,
1718             ha->cpar.write_back,ha->cpar.block_size));
1719
1720     /* read board info and features */
1721     ha->more_proc = FALSE;
1722     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, BOARD_INFO,
1723                           INVALID_CHANNEL,sizeof(gdth_binfo_str))) {
1724         memcpy(&ha->binfo, (gdth_binfo_str *)ha->pscratch,
1725                sizeof(gdth_binfo_str));
1726         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, BOARD_FEATURES,
1727                               INVALID_CHANNEL,sizeof(gdth_bfeat_str))) {
1728             TRACE2(("BOARD_INFO/BOARD_FEATURES supported\n"));
1729             ha->bfeat = *(gdth_bfeat_str *)ha->pscratch;
1730             ha->more_proc = TRUE;
1731         }
1732     } else {
1733         TRACE2(("BOARD_INFO requires firmware >= 1.10/2.08\n"));
1734         strcpy(ha->binfo.type_string, gdth_ctr_name(ha));
1735     }
1736     TRACE2(("Controller name: %s\n",ha->binfo.type_string));
1737
1738     /* read more informations */
1739     if (ha->more_proc) {
1740         /* physical drives, channel addresses */
1741         ioc = (gdth_iochan_str *)ha->pscratch;
1742         ioc->hdr.version        = 0xffffffff;
1743         ioc->hdr.list_entries   = MAXBUS;
1744         ioc->hdr.first_chan     = 0;
1745         ioc->hdr.last_chan      = MAXBUS-1;
1746         ioc->hdr.list_offset    = GDTOFFSOF(gdth_iochan_str, list[0]);
1747         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, IOCHAN_DESC,
1748                               INVALID_CHANNEL,sizeof(gdth_iochan_str))) {
1749             for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
1750                 ha->raw[bus_no].address = ioc->list[bus_no].address;
1751                 ha->raw[bus_no].local_no = ioc->list[bus_no].local_no;
1752             }
1753         } else {
1754             for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
1755                 ha->raw[bus_no].address = IO_CHANNEL;
1756                 ha->raw[bus_no].local_no = bus_no;
1757             }
1758         }
1759         for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
1760             chn = (gdth_getch_str *)ha->pscratch;
1761             chn->channel_no = ha->raw[bus_no].local_no;
1762             if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1763                                   SCSI_CHAN_CNT | L_CTRL_PATTERN,
1764                                   ha->raw[bus_no].address | INVALID_CHANNEL,
1765                                   sizeof(gdth_getch_str))) {
1766                 ha->raw[bus_no].pdev_cnt = chn->drive_cnt;
1767                 TRACE2(("Channel %d: %d phys. drives\n",
1768                         bus_no,chn->drive_cnt));
1769             }
1770             if (ha->raw[bus_no].pdev_cnt > 0) {
1771                 drl = (gdth_drlist_str *)ha->pscratch;
1772                 drl->sc_no = ha->raw[bus_no].local_no;
1773                 drl->sc_cnt = ha->raw[bus_no].pdev_cnt;
1774                 if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1775                                       SCSI_DR_LIST | L_CTRL_PATTERN,
1776                                       ha->raw[bus_no].address | INVALID_CHANNEL,
1777                                       sizeof(gdth_drlist_str))) {
1778                     for (j = 0; j < ha->raw[bus_no].pdev_cnt; ++j)
1779                         ha->raw[bus_no].id_list[j] = drl->sc_list[j];
1780                 } else {
1781                     ha->raw[bus_no].pdev_cnt = 0;
1782                 }
1783             }
1784         }
1785
1786         /* logical drives */
1787         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, CACHE_DRV_CNT,
1788                               INVALID_CHANNEL,sizeof(u32))) {
1789             drv_cnt = *(u32 *)ha->pscratch;
1790             if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, CACHE_DRV_LIST,
1791                                   INVALID_CHANNEL,drv_cnt * sizeof(u32))) {
1792                 for (j = 0; j < drv_cnt; ++j) {
1793                     drv_no = ((u32 *)ha->pscratch)[j];
1794                     if (drv_no < MAX_LDRIVES) {
1795                         ha->hdr[drv_no].is_logdrv = TRUE;
1796                         TRACE2(("Drive %d is log. drive\n",drv_no));
1797                     }
1798                 }
1799             }
1800             alst = (gdth_arcdl_str *)ha->pscratch;
1801             alst->entries_avail = MAX_LDRIVES;
1802             alst->first_entry = 0;
1803             alst->list_offset = GDTOFFSOF(gdth_arcdl_str, list[0]);
1804             if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1805                                   ARRAY_DRV_LIST2 | LA_CTRL_PATTERN,
1806                                   INVALID_CHANNEL, sizeof(gdth_arcdl_str) +
1807                                   (alst->entries_avail-1) * sizeof(gdth_alist_str))) {
1808                 for (j = 0; j < alst->entries_init; ++j) {
1809                     ha->hdr[j].is_arraydrv = alst->list[j].is_arrayd;
1810                     ha->hdr[j].is_master = alst->list[j].is_master;
1811                     ha->hdr[j].is_parity = alst->list[j].is_parity;
1812                     ha->hdr[j].is_hotfix = alst->list[j].is_hotfix;
1813                     ha->hdr[j].master_no = alst->list[j].cd_handle;
1814                 }
1815             } else if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1816                                          ARRAY_DRV_LIST | LA_CTRL_PATTERN,
1817                                          0, 35 * sizeof(gdth_alist_str))) {
1818                 for (j = 0; j < 35; ++j) {
1819                     alst2 = &((gdth_alist_str *)ha->pscratch)[j];
1820                     ha->hdr[j].is_arraydrv = alst2->is_arrayd;
1821                     ha->hdr[j].is_master = alst2->is_master;
1822                     ha->hdr[j].is_parity = alst2->is_parity;
1823                     ha->hdr[j].is_hotfix = alst2->is_hotfix;
1824                     ha->hdr[j].master_no = alst2->cd_handle;
1825                 }
1826             }
1827         }
1828     }
1829
1830     /* initialize raw service */
1831     ha->raw_feat = 0;
1832     if (!force_dma32) {
1833         ok = gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_X_INIT_RAW, 0, 0, 0);
1834         if (ok)
1835             ha->raw_feat = GDT_64BIT;
1836     }
1837     if (force_dma32 || (!ok && ha->status == (u16)S_NOFUNC))
1838         ok = gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_INIT, 0, 0, 0);
1839     if (!ok) {
1840         printk("GDT-HA %d: Initialization error raw service (code %d)\n",
1841                ha->hanum, ha->status);
1842         return 0;
1843     }
1844     TRACE2(("gdth_search_drives(): RAWSERVICE initialized\n"));
1845
1846     /* set/get features raw service (scatter/gather) */
1847     if (gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_SET_FEAT, SCATTER_GATHER,
1848                           0, 0)) {
1849         TRACE2(("gdth_search_drives(): set features RAWSERVICE OK\n"));
1850         if (gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_GET_FEAT, 0, 0, 0)) {
1851             TRACE2(("gdth_search_dr(): get feat RAWSERVICE %d\n",
1852                     ha->info));
1853             ha->raw_feat |= (u16)ha->info;
1854         }
1855     }
1856
1857     /* set/get features cache service (equal to raw service) */
1858     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_SET_FEAT, 0,
1859                           SCATTER_GATHER,0)) {
1860         TRACE2(("gdth_search_drives(): set features CACHESERVICE OK\n"));
1861         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_GET_FEAT, 0, 0, 0)) {
1862             TRACE2(("gdth_search_dr(): get feat CACHESERV. %d\n",
1863                     ha->info));
1864             ha->cache_feat |= (u16)ha->info;
1865         }
1866     }
1867
1868     /* reserve drives for raw service */
1869     if (reserve_mode != 0) {
1870         gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_RESERVE_ALL,
1871                           reserve_mode == 1 ? 1 : 3, 0, 0);
1872         TRACE2(("gdth_search_drives(): RESERVE_ALL code %d\n",
1873                 ha->status));
1874     }
1875     for (i = 0; i < MAX_RES_ARGS; i += 4) {
1876         if (reserve_list[i] == ha->hanum && reserve_list[i+1] < ha->bus_cnt &&
1877             reserve_list[i+2] < ha->tid_cnt && reserve_list[i+3] < MAXLUN) {
1878             TRACE2(("gdth_search_drives(): reserve ha %d bus %d id %d lun %d\n",
1879                     reserve_list[i], reserve_list[i+1],
1880                     reserve_list[i+2], reserve_list[i+3]));
1881             if (!gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_RESERVE, 0,
1882                                    reserve_list[i+1], reserve_list[i+2] |
1883                                    (reserve_list[i+3] << 8))) {
1884                 printk("GDT-HA %d: Error raw service (RESERVE, code %d)\n",
1885                        ha->hanum, ha->status);
1886              }
1887         }
1888     }
1889
1890     /* Determine OEM string using IOCTL */
1891     oemstr = (gdth_oem_str_ioctl *)ha->pscratch;
1892     oemstr->params.ctl_version = 0x01;
1893     oemstr->params.buffer_size = sizeof(oemstr->text);
1894     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1895                           CACHE_READ_OEM_STRING_RECORD,INVALID_CHANNEL,
1896                           sizeof(gdth_oem_str_ioctl))) {
1897         TRACE2(("gdth_search_drives(): CACHE_READ_OEM_STRING_RECORD OK\n"));
1898         printk("GDT-HA %d: Vendor: %s Name: %s\n",
1899                ha->hanum, oemstr->text.oem_company_name, ha->binfo.type_string);
1900         /* Save the Host Drive inquiry data */
1901         strlcpy(ha->oem_name,oemstr->text.scsi_host_drive_inquiry_vendor_id,
1902                 sizeof(ha->oem_name));
1903     } else {
1904         /* Old method, based on PCI ID */
1905         TRACE2(("gdth_search_drives(): CACHE_READ_OEM_STRING_RECORD failed\n"));
1906         printk("GDT-HA %d: Name: %s\n",
1907                ha->hanum, ha->binfo.type_string);
1908         if (ha->oem_id == OEM_ID_INTEL)
1909             strlcpy(ha->oem_name,"Intel  ", sizeof(ha->oem_name));
1910         else
1911             strlcpy(ha->oem_name,"ICP    ", sizeof(ha->oem_name));
1912     }
1913
1914     /* scanning for host drives */
1915     for (i = 0; i < cdev_cnt; ++i)
1916         gdth_analyse_hdrive(ha, i);
1917
1918     TRACE(("gdth_search_drives() OK\n"));
1919     return 1;
1920 }
1921
1922 static int gdth_analyse_hdrive(gdth_ha_str *ha, u16 hdrive)
1923 {
1924     u32 drv_cyls;
1925     int drv_hds, drv_secs;
1926
1927     TRACE(("gdth_analyse_hdrive() hanum %d drive %d\n", ha->hanum, hdrive));
1928     if (hdrive >= MAX_HDRIVES)
1929         return 0;
1930
1931     if (!gdth_internal_cmd(ha, CACHESERVICE, GDT_INFO, hdrive, 0, 0))
1932         return 0;
1933     ha->hdr[hdrive].present = TRUE;
1934     ha->hdr[hdrive].size = ha->info;
1935
1936     /* evaluate mapping (sectors per head, heads per cylinder) */
1937     ha->hdr[hdrive].size &= ~SECS32;
1938     if (ha->info2 == 0) {
1939         gdth_eval_mapping(ha->hdr[hdrive].size,&drv_cyls,&drv_hds,&drv_secs);
1940     } else {
1941         drv_hds = ha->info2 & 0xff;
1942         drv_secs = (ha->info2 >> 8) & 0xff;
1943         drv_cyls = (u32)ha->hdr[hdrive].size / drv_hds / drv_secs;
1944     }
1945     ha->hdr[hdrive].heads = (u8)drv_hds;
1946     ha->hdr[hdrive].secs  = (u8)drv_secs;
1947     /* round size */
1948     ha->hdr[hdrive].size  = drv_cyls * drv_hds * drv_secs;
1949
1950     if (ha->cache_feat & GDT_64BIT) {
1951         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_X_INFO, hdrive, 0, 0)
1952             && ha->info2 != 0) {
1953             ha->hdr[hdrive].size = ((u64)ha->info2 << 32) | ha->info;
1954         }
1955     }
1956     TRACE2(("gdth_search_dr() cdr. %d size %d hds %d scs %d\n",
1957             hdrive,ha->hdr[hdrive].size,drv_hds,drv_secs));
1958
1959     /* get informations about device */
1960     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_DEVTYPE, hdrive, 0, 0)) {
1961         TRACE2(("gdth_search_dr() cache drive %d devtype %d\n",
1962                 hdrive,ha->info));
1963         ha->hdr[hdrive].devtype = (u16)ha->info;
1964     }
1965
1966     /* cluster info */
1967     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_CLUST_INFO, hdrive, 0, 0)) {
1968         TRACE2(("gdth_search_dr() cache drive %d cluster info %d\n",
1969                 hdrive,ha->info));
1970         if (!shared_access)
1971             ha->hdr[hdrive].cluster_type = (u8)ha->info;
1972     }
1973
1974     /* R/W attributes */
1975     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_RW_ATTRIBS, hdrive, 0, 0)) {
1976         TRACE2(("gdth_search_dr() cache drive %d r/w attrib. %d\n",
1977                 hdrive,ha->info));
1978         ha->hdr[hdrive].rw_attribs = (u8)ha->info;
1979     }
1980
1981     return 1;
1982 }
1983
1984
1985 /* command queueing/sending functions */
1986
1987 static void gdth_putq(gdth_ha_str *ha, Scsi_Cmnd *scp, u8 priority)
1988 {
1989     struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
1990     register Scsi_Cmnd *pscp;
1991     register Scsi_Cmnd *nscp;
1992     unsigned long flags;
1993
1994     TRACE(("gdth_putq() priority %d\n",priority));
1995     spin_lock_irqsave(&ha->smp_lock, flags);
1996
1997     if (!cmndinfo->internal_command)
1998         cmndinfo->priority = priority;
1999
2000     if (ha->req_first==NULL) {
2001         ha->req_first = scp;                    /* queue was empty */
2002         scp->SCp.ptr = NULL;
2003     } else {                                    /* queue not empty */
2004         pscp = ha->req_first;
2005         nscp = (Scsi_Cmnd *)pscp->SCp.ptr;
2006         /* priority: 0-highest,..,0xff-lowest */
2007         while (nscp && gdth_cmnd_priv(nscp)->priority <= priority) {
2008             pscp = nscp;
2009             nscp = (Scsi_Cmnd *)pscp->SCp.ptr;
2010         }
2011         pscp->SCp.ptr = (char *)scp;
2012         scp->SCp.ptr  = (char *)nscp;
2013     }
2014     spin_unlock_irqrestore(&ha->smp_lock, flags);
2015
2016 #ifdef GDTH_STATISTICS
2017     flags = 0;
2018     for (nscp=ha->req_first; nscp; nscp=(Scsi_Cmnd*)nscp->SCp.ptr)
2019         ++flags;
2020     if (max_rq < flags) {
2021         max_rq = flags;
2022         TRACE3(("GDT: max_rq = %d\n",(u16)max_rq));
2023     }
2024 #endif
2025 }
2026
2027 static void gdth_next(gdth_ha_str *ha)
2028 {
2029     register Scsi_Cmnd *pscp;
2030     register Scsi_Cmnd *nscp;
2031     u8 b, t, l, firsttime;
2032     u8 this_cmd, next_cmd;
2033     unsigned long flags = 0;
2034     int cmd_index;
2035
2036     TRACE(("gdth_next() hanum %d\n", ha->hanum));
2037     if (!gdth_polling)
2038         spin_lock_irqsave(&ha->smp_lock, flags);
2039
2040     ha->cmd_cnt = ha->cmd_offs_dpmem = 0;
2041     this_cmd = firsttime = TRUE;
2042     next_cmd = gdth_polling ? FALSE:TRUE;
2043     cmd_index = 0;
2044
2045     for (nscp = pscp = ha->req_first; nscp; nscp = (Scsi_Cmnd *)nscp->SCp.ptr) {
2046         struct gdth_cmndinfo *nscp_cmndinfo = gdth_cmnd_priv(nscp);
2047         if (nscp != pscp && nscp != (Scsi_Cmnd *)pscp->SCp.ptr)
2048             pscp = (Scsi_Cmnd *)pscp->SCp.ptr;
2049         if (!nscp_cmndinfo->internal_command) {
2050             b = nscp->device->channel;
2051             t = nscp->device->id;
2052             l = nscp->device->lun;
2053             if (nscp_cmndinfo->priority >= DEFAULT_PRI) {
2054                 if ((b != ha->virt_bus && ha->raw[BUS_L2P(ha,b)].lock) ||
2055                     (b == ha->virt_bus && t < MAX_HDRIVES && ha->hdr[t].lock))
2056                     continue;
2057             }
2058         } else
2059             b = t = l = 0;
2060
2061         if (firsttime) {
2062             if (gdth_test_busy(ha)) {        /* controller busy ? */
2063                 TRACE(("gdth_next() controller %d busy !\n", ha->hanum));
2064                 if (!gdth_polling) {
2065                     spin_unlock_irqrestore(&ha->smp_lock, flags);
2066                     return;
2067                 }
2068                 while (gdth_test_busy(ha))
2069                     gdth_delay(1);
2070             }
2071             firsttime = FALSE;
2072         }
2073
2074         if (!nscp_cmndinfo->internal_command) {
2075         if (nscp_cmndinfo->phase == -1) {
2076             nscp_cmndinfo->phase = CACHESERVICE;           /* default: cache svc. */
2077             if (nscp->cmnd[0] == TEST_UNIT_READY) {
2078                 TRACE2(("TEST_UNIT_READY Bus %d Id %d LUN %d\n",
2079                         b, t, l));
2080                 /* TEST_UNIT_READY -> set scan mode */
2081                 if ((ha->scan_mode & 0x0f) == 0) {
2082                     if (b == 0 && t == 0 && l == 0) {
2083                         ha->scan_mode |= 1;
2084                         TRACE2(("Scan mode: 0x%x\n", ha->scan_mode));
2085                     }
2086                 } else if ((ha->scan_mode & 0x0f) == 1) {
2087                     if (b == 0 && ((t == 0 && l == 1) ||
2088                          (t == 1 && l == 0))) {
2089                         nscp_cmndinfo->OpCode = GDT_SCAN_START;
2090                         nscp_cmndinfo->phase = ((ha->scan_mode & 0x10 ? 1:0) << 8)
2091                             | SCSIRAWSERVICE;
2092                         ha->scan_mode = 0x12;
2093                         TRACE2(("Scan mode: 0x%x (SCAN_START)\n",
2094                                 ha->scan_mode));
2095                     } else {
2096                         ha->scan_mode &= 0x10;
2097                         TRACE2(("Scan mode: 0x%x\n", ha->scan_mode));
2098                     }
2099                 } else if (ha->scan_mode == 0x12) {
2100                     if (b == ha->bus_cnt && t == ha->tid_cnt-1) {
2101                         nscp_cmndinfo->phase = SCSIRAWSERVICE;
2102                         nscp_cmndinfo->OpCode = GDT_SCAN_END;
2103                         ha->scan_mode &= 0x10;
2104                         TRACE2(("Scan mode: 0x%x (SCAN_END)\n",
2105                                 ha->scan_mode));
2106                     }
2107                 }
2108             }
2109             if (b == ha->virt_bus && nscp->cmnd[0] != INQUIRY &&
2110                 nscp->cmnd[0] != READ_CAPACITY && nscp->cmnd[0] != MODE_SENSE &&
2111                 (ha->hdr[t].cluster_type & CLUSTER_DRIVE)) {
2112                 /* always GDT_CLUST_INFO! */
2113                 nscp_cmndinfo->OpCode = GDT_CLUST_INFO;
2114             }
2115         }
2116         }
2117
2118         if (nscp_cmndinfo->OpCode != -1) {
2119             if ((nscp_cmndinfo->phase & 0xff) == CACHESERVICE) {
2120                 if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
2121                     this_cmd = FALSE;
2122                 next_cmd = FALSE;
2123             } else if ((nscp_cmndinfo->phase & 0xff) == SCSIRAWSERVICE) {
2124                 if (!(cmd_index=gdth_fill_raw_cmd(ha, nscp, BUS_L2P(ha, b))))
2125                     this_cmd = FALSE;
2126                 next_cmd = FALSE;
2127             } else {
2128                 memset((char*)nscp->sense_buffer,0,16);
2129                 nscp->sense_buffer[0] = 0x70;
2130                 nscp->sense_buffer[2] = NOT_READY;
2131                 nscp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
2132                 if (!nscp_cmndinfo->wait_for_completion)
2133                     nscp_cmndinfo->wait_for_completion++;
2134                 else
2135                     gdth_scsi_done(nscp);
2136             }
2137         } else if (gdth_cmnd_priv(nscp)->internal_command) {
2138             if (!(cmd_index=gdth_special_cmd(ha, nscp)))
2139                 this_cmd = FALSE;
2140             next_cmd = FALSE;
2141         } else if (b != ha->virt_bus) {
2142             if (ha->raw[BUS_L2P(ha,b)].io_cnt[t] >= GDTH_MAX_RAW ||
2143                 !(cmd_index=gdth_fill_raw_cmd(ha, nscp, BUS_L2P(ha, b))))
2144                 this_cmd = FALSE;
2145             else
2146                 ha->raw[BUS_L2P(ha,b)].io_cnt[t]++;
2147         } else if (t >= MAX_HDRIVES || !ha->hdr[t].present || l != 0) {
2148             TRACE2(("Command 0x%x to bus %d id %d lun %d -> IGNORE\n",
2149                     nscp->cmnd[0], b, t, l));
2150             nscp->result = DID_BAD_TARGET << 16;
2151             if (!nscp_cmndinfo->wait_for_completion)
2152                 nscp_cmndinfo->wait_for_completion++;
2153             else
2154                 gdth_scsi_done(nscp);
2155         } else {
2156             switch (nscp->cmnd[0]) {
2157               case TEST_UNIT_READY:
2158               case INQUIRY:
2159               case REQUEST_SENSE:
2160               case READ_CAPACITY:
2161               case VERIFY:
2162               case START_STOP:
2163               case MODE_SENSE:
2164               case SERVICE_ACTION_IN:
2165                 TRACE(("cache cmd %x/%x/%x/%x/%x/%x\n",nscp->cmnd[0],
2166                        nscp->cmnd[1],nscp->cmnd[2],nscp->cmnd[3],
2167                        nscp->cmnd[4],nscp->cmnd[5]));
2168                 if (ha->hdr[t].media_changed && nscp->cmnd[0] != INQUIRY) {
2169                     /* return UNIT_ATTENTION */
2170                     TRACE2(("cmd 0x%x target %d: UNIT_ATTENTION\n",
2171                              nscp->cmnd[0], t));
2172                     ha->hdr[t].media_changed = FALSE;
2173                     memset((char*)nscp->sense_buffer,0,16);
2174                     nscp->sense_buffer[0] = 0x70;
2175                     nscp->sense_buffer[2] = UNIT_ATTENTION;
2176                     nscp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
2177                     if (!nscp_cmndinfo->wait_for_completion)
2178                         nscp_cmndinfo->wait_for_completion++;
2179                     else
2180                         gdth_scsi_done(nscp);
2181                 } else if (gdth_internal_cache_cmd(ha, nscp))
2182                     gdth_scsi_done(nscp);
2183                 break;
2184
2185               case ALLOW_MEDIUM_REMOVAL:
2186                 TRACE(("cache cmd %x/%x/%x/%x/%x/%x\n",nscp->cmnd[0],
2187                        nscp->cmnd[1],nscp->cmnd[2],nscp->cmnd[3],
2188                        nscp->cmnd[4],nscp->cmnd[5]));
2189                 if ( (nscp->cmnd[4]&1) && !(ha->hdr[t].devtype&1) ) {
2190                     TRACE(("Prevent r. nonremov. drive->do nothing\n"));
2191                     nscp->result = DID_OK << 16;
2192                     nscp->sense_buffer[0] = 0;
2193                     if (!nscp_cmndinfo->wait_for_completion)
2194                         nscp_cmndinfo->wait_for_completion++;
2195                     else
2196                         gdth_scsi_done(nscp);
2197                 } else {
2198                     nscp->cmnd[3] = (ha->hdr[t].devtype&1) ? 1:0;
2199                     TRACE(("Prevent/allow r. %d rem. drive %d\n",
2200                            nscp->cmnd[4],nscp->cmnd[3]));
2201                     if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
2202                         this_cmd = FALSE;
2203                 }
2204                 break;
2205
2206               case RESERVE:
2207               case RELEASE:
2208                 TRACE2(("cache cmd %s\n",nscp->cmnd[0] == RESERVE ?
2209                         "RESERVE" : "RELEASE"));
2210                 if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
2211                     this_cmd = FALSE;
2212                 break;
2213
2214               case READ_6:
2215               case WRITE_6:
2216               case READ_10:
2217               case WRITE_10:
2218               case READ_16:
2219               case WRITE_16:
2220                 if (ha->hdr[t].media_changed) {
2221                     /* return UNIT_ATTENTION */
2222                     TRACE2(("cmd 0x%x target %d: UNIT_ATTENTION\n",
2223                              nscp->cmnd[0], t));
2224                     ha->hdr[t].media_changed = FALSE;
2225                     memset((char*)nscp->sense_buffer,0,16);
2226                     nscp->sense_buffer[0] = 0x70;
2227                     nscp->sense_buffer[2] = UNIT_ATTENTION;
2228                     nscp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
2229                     if (!nscp_cmndinfo->wait_for_completion)
2230                         nscp_cmndinfo->wait_for_completion++;
2231                     else
2232                         gdth_scsi_done(nscp);
2233                 } else if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
2234                     this_cmd = FALSE;
2235                 break;
2236
2237               default:
2238                 TRACE2(("cache cmd %x/%x/%x/%x/%x/%x unknown\n",nscp->cmnd[0],
2239                         nscp->cmnd[1],nscp->cmnd[2],nscp->cmnd[3],
2240                         nscp->cmnd[4],nscp->cmnd[5]));
2241                 printk("GDT-HA %d: Unknown SCSI command 0x%x to cache service !\n",
2242                        ha->hanum, nscp->cmnd[0]);
2243                 nscp->result = DID_ABORT << 16;
2244                 if (!nscp_cmndinfo->wait_for_completion)
2245                     nscp_cmndinfo->wait_for_completion++;
2246                 else
2247                     gdth_scsi_done(nscp);
2248                 break;
2249             }
2250         }
2251
2252         if (!this_cmd)
2253             break;
2254         if (nscp == ha->req_first)
2255             ha->req_first = pscp = (Scsi_Cmnd *)nscp->SCp.ptr;
2256         else
2257             pscp->SCp.ptr = nscp->SCp.ptr;
2258         if (!next_cmd)
2259             break;
2260     }
2261
2262     if (ha->cmd_cnt > 0) {
2263         gdth_release_event(ha);
2264     }
2265
2266     if (!gdth_polling)
2267         spin_unlock_irqrestore(&ha->smp_lock, flags);
2268
2269     if (gdth_polling && ha->cmd_cnt > 0) {
2270         if (!gdth_wait(ha, cmd_index, POLL_TIMEOUT))
2271             printk("GDT-HA %d: Command %d timed out !\n",
2272                    ha->hanum, cmd_index);
2273     }
2274 }
2275
2276 /*
2277  * gdth_copy_internal_data() - copy to/from a buffer onto a scsi_cmnd's
2278  * buffers, kmap_atomic() as needed.
2279  */
2280 static void gdth_copy_internal_data(gdth_ha_str *ha, Scsi_Cmnd *scp,
2281                                     char *buffer, u16 count)
2282 {
2283     u16 cpcount,i, max_sg = scsi_sg_count(scp);
2284     u16 cpsum,cpnow;
2285     struct scatterlist *sl;
2286     char *address;
2287
2288     cpcount = min_t(u16, count, scsi_bufflen(scp));
2289
2290     if (cpcount) {
2291         cpsum=0;
2292         scsi_for_each_sg(scp, sl, max_sg, i) {
2293             unsigned long flags;
2294             cpnow = (u16)sl->length;
2295             TRACE(("copy_internal() now %d sum %d count %d %d\n",
2296                           cpnow, cpsum, cpcount, scsi_bufflen(scp)));
2297             if (cpsum+cpnow > cpcount)
2298                 cpnow = cpcount - cpsum;
2299             cpsum += cpnow;
2300             if (!sg_page(sl)) {
2301                 printk("GDT-HA %d: invalid sc/gt element in gdth_copy_internal_data()\n",
2302                        ha->hanum);
2303                 return;
2304             }
2305             local_irq_save(flags);
2306             address = kmap_atomic(sg_page(sl)) + sl->offset;
2307             memcpy(address, buffer, cpnow);
2308             flush_dcache_page(sg_page(sl));
2309             kunmap_atomic(address);
2310             local_irq_restore(flags);
2311             if (cpsum == cpcount)
2312                 break;
2313             buffer += cpnow;
2314         }
2315     } else if (count) {
2316         printk("GDT-HA %d: SCSI command with no buffers but data transfer expected!\n",
2317                ha->hanum);
2318         WARN_ON(1);
2319     }
2320 }
2321
2322 static int gdth_internal_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp)
2323 {
2324     u8 t;
2325     gdth_inq_data inq;
2326     gdth_rdcap_data rdc;
2327     gdth_sense_data sd;
2328     gdth_modep_data mpd;
2329     struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
2330
2331     t  = scp->device->id;
2332     TRACE(("gdth_internal_cache_cmd() cmd 0x%x hdrive %d\n",
2333            scp->cmnd[0],t));
2334
2335     scp->result = DID_OK << 16;
2336     scp->sense_buffer[0] = 0;
2337
2338     switch (scp->cmnd[0]) {
2339       case TEST_UNIT_READY:
2340       case VERIFY:
2341       case START_STOP:
2342         TRACE2(("Test/Verify/Start hdrive %d\n",t));
2343         break;
2344
2345       case INQUIRY:
2346         TRACE2(("Inquiry hdrive %d devtype %d\n",
2347                 t,ha->hdr[t].devtype));
2348         inq.type_qual = (ha->hdr[t].devtype&4) ? TYPE_ROM:TYPE_DISK;
2349         /* you can here set all disks to removable, if you want to do
2350            a flush using the ALLOW_MEDIUM_REMOVAL command */
2351         inq.modif_rmb = 0x00;
2352         if ((ha->hdr[t].devtype & 1) ||
2353             (ha->hdr[t].cluster_type & CLUSTER_DRIVE))
2354             inq.modif_rmb = 0x80;
2355         inq.version   = 2;
2356         inq.resp_aenc = 2;
2357         inq.add_length= 32;
2358         strcpy(inq.vendor,ha->oem_name);
2359         sprintf(inq.product,"Host Drive  #%02d",t);
2360         strcpy(inq.revision,"   ");
2361         gdth_copy_internal_data(ha, scp, (char*)&inq, sizeof(gdth_inq_data));
2362         break;
2363
2364       case REQUEST_SENSE:
2365         TRACE2(("Request sense hdrive %d\n",t));
2366         sd.errorcode = 0x70;
2367         sd.segno     = 0x00;
2368         sd.key       = NO_SENSE;
2369         sd.info      = 0;
2370         sd.add_length= 0;
2371         gdth_copy_internal_data(ha, scp, (char*)&sd, sizeof(gdth_sense_data));
2372         break;
2373
2374       case MODE_SENSE:
2375         TRACE2(("Mode sense hdrive %d\n",t));
2376         memset((char*)&mpd,0,sizeof(gdth_modep_data));
2377         mpd.hd.data_length = sizeof(gdth_modep_data);
2378         mpd.hd.dev_par     = (ha->hdr[t].devtype&2) ? 0x80:0;
2379         mpd.hd.bd_length   = sizeof(mpd.bd);
2380         mpd.bd.block_length[0] = (SECTOR_SIZE & 0x00ff0000) >> 16;
2381         mpd.bd.block_length[1] = (SECTOR_SIZE & 0x0000ff00) >> 8;
2382         mpd.bd.block_length[2] = (SECTOR_SIZE & 0x000000ff);
2383         gdth_copy_internal_data(ha, scp, (char*)&mpd, sizeof(gdth_modep_data));
2384         break;
2385
2386       case READ_CAPACITY:
2387         TRACE2(("Read capacity hdrive %d\n",t));
2388         if (ha->hdr[t].size > (u64)0xffffffff)
2389             rdc.last_block_no = 0xffffffff;
2390         else
2391             rdc.last_block_no = cpu_to_be32(ha->hdr[t].size-1);
2392         rdc.block_length  = cpu_to_be32(SECTOR_SIZE);
2393         gdth_copy_internal_data(ha, scp, (char*)&rdc, sizeof(gdth_rdcap_data));
2394         break;
2395
2396       case SERVICE_ACTION_IN:
2397         if ((scp->cmnd[1] & 0x1f) == SAI_READ_CAPACITY_16 &&
2398             (ha->cache_feat & GDT_64BIT)) {
2399             gdth_rdcap16_data rdc16;
2400
2401             TRACE2(("Read capacity (16) hdrive %d\n",t));
2402             rdc16.last_block_no = cpu_to_be64(ha->hdr[t].size-1);
2403             rdc16.block_length  = cpu_to_be32(SECTOR_SIZE);
2404             gdth_copy_internal_data(ha, scp, (char*)&rdc16,
2405                                                  sizeof(gdth_rdcap16_data));
2406         } else {
2407             scp->result = DID_ABORT << 16;
2408         }
2409         break;
2410
2411       default:
2412         TRACE2(("Internal cache cmd 0x%x unknown\n",scp->cmnd[0]));
2413         break;
2414     }
2415
2416     if (!cmndinfo->wait_for_completion)
2417         cmndinfo->wait_for_completion++;
2418     else
2419         return 1;
2420
2421     return 0;
2422 }
2423
2424 static int gdth_fill_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, u16 hdrive)
2425 {
2426     register gdth_cmd_str *cmdp;
2427     struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
2428     u32 cnt, blockcnt;
2429     u64 no, blockno;
2430     int i, cmd_index, read_write, sgcnt, mode64;
2431
2432     cmdp = ha->pccb;
2433     TRACE(("gdth_fill_cache_cmd() cmd 0x%x cmdsize %d hdrive %d\n",
2434                  scp->cmnd[0],scp->cmd_len,hdrive));
2435
2436     if (ha->type==GDT_EISA && ha->cmd_cnt>0)
2437         return 0;
2438
2439     mode64 = (ha->cache_feat & GDT_64BIT) ? TRUE : FALSE;
2440     /* test for READ_16, WRITE_16 if !mode64 ? ---
2441        not required, should not occur due to error return on
2442        READ_CAPACITY_16 */
2443
2444     cmdp->Service = CACHESERVICE;
2445     cmdp->RequestBuffer = scp;
2446     /* search free command index */
2447     if (!(cmd_index=gdth_get_cmd_index(ha))) {
2448         TRACE(("GDT: No free command index found\n"));
2449         return 0;
2450     }
2451     /* if it's the first command, set command semaphore */
2452     if (ha->cmd_cnt == 0)
2453         gdth_set_sema0(ha);
2454
2455     /* fill command */
2456     read_write = 0;
2457     if (cmndinfo->OpCode != -1)
2458         cmdp->OpCode = cmndinfo->OpCode;   /* special cache cmd. */
2459     else if (scp->cmnd[0] == RESERVE)
2460         cmdp->OpCode = GDT_RESERVE_DRV;
2461     else if (scp->cmnd[0] == RELEASE)
2462         cmdp->OpCode = GDT_RELEASE_DRV;
2463     else if (scp->cmnd[0] == ALLOW_MEDIUM_REMOVAL) {
2464         if (scp->cmnd[4] & 1)                   /* prevent ? */
2465             cmdp->OpCode = GDT_MOUNT;
2466         else if (scp->cmnd[3] & 1)              /* removable drive ? */
2467             cmdp->OpCode = GDT_UNMOUNT;
2468         else
2469             cmdp->OpCode = GDT_FLUSH;
2470     } else if (scp->cmnd[0] == WRITE_6 || scp->cmnd[0] == WRITE_10 ||
2471                scp->cmnd[0] == WRITE_12 || scp->cmnd[0] == WRITE_16
2472     ) {
2473         read_write = 1;
2474         if (gdth_write_through || ((ha->hdr[hdrive].rw_attribs & 1) &&
2475                                    (ha->cache_feat & GDT_WR_THROUGH)))
2476             cmdp->OpCode = GDT_WRITE_THR;
2477         else
2478             cmdp->OpCode = GDT_WRITE;
2479     } else {
2480         read_write = 2;
2481         cmdp->OpCode = GDT_READ;
2482     }
2483
2484     cmdp->BoardNode = LOCALBOARD;
2485     if (mode64) {
2486         cmdp->u.cache64.DeviceNo = hdrive;
2487         cmdp->u.cache64.BlockNo  = 1;
2488         cmdp->u.cache64.sg_canz  = 0;
2489     } else {
2490         cmdp->u.cache.DeviceNo = hdrive;
2491         cmdp->u.cache.BlockNo  = 1;
2492         cmdp->u.cache.sg_canz  = 0;
2493     }
2494
2495     if (read_write) {
2496         if (scp->cmd_len == 16) {
2497             memcpy(&no, &scp->cmnd[2], sizeof(u64));
2498             blockno = be64_to_cpu(no);
2499             memcpy(&cnt, &scp->cmnd[10], sizeof(u32));
2500             blockcnt = be32_to_cpu(cnt);
2501         } else if (scp->cmd_len == 10) {
2502             memcpy(&no, &scp->cmnd[2], sizeof(u32));
2503             blockno = be32_to_cpu(no);
2504             memcpy(&cnt, &scp->cmnd[7], sizeof(u16));
2505             blockcnt = be16_to_cpu(cnt);
2506         } else {
2507             memcpy(&no, &scp->cmnd[0], sizeof(u32));
2508             blockno = be32_to_cpu(no) & 0x001fffffUL;
2509             blockcnt= scp->cmnd[4]==0 ? 0x100 : scp->cmnd[4];
2510         }
2511         if (mode64) {
2512             cmdp->u.cache64.BlockNo = blockno;
2513             cmdp->u.cache64.BlockCnt = blockcnt;
2514         } else {
2515             cmdp->u.cache.BlockNo = (u32)blockno;
2516             cmdp->u.cache.BlockCnt = blockcnt;
2517         }
2518
2519         if (scsi_bufflen(scp)) {
2520             cmndinfo->dma_dir = (read_write == 1 ?
2521                 PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE);
2522             sgcnt = pci_map_sg(ha->pdev, scsi_sglist(scp), scsi_sg_count(scp),
2523                                cmndinfo->dma_dir);
2524             if (mode64) {
2525                 struct scatterlist *sl;
2526
2527                 cmdp->u.cache64.DestAddr= (u64)-1;
2528                 cmdp->u.cache64.sg_canz = sgcnt;
2529                 scsi_for_each_sg(scp, sl, sgcnt, i) {
2530                     cmdp->u.cache64.sg_lst[i].sg_ptr = sg_dma_address(sl);
2531 #ifdef GDTH_DMA_STATISTICS
2532                     if (cmdp->u.cache64.sg_lst[i].sg_ptr > (u64)0xffffffff)
2533                         ha->dma64_cnt++;
2534                     else
2535                         ha->dma32_cnt++;
2536 #endif
2537                     cmdp->u.cache64.sg_lst[i].sg_len = sg_dma_len(sl);
2538                 }
2539             } else {
2540                 struct scatterlist *sl;
2541
2542                 cmdp->u.cache.DestAddr= 0xffffffff;
2543                 cmdp->u.cache.sg_canz = sgcnt;
2544                 scsi_for_each_sg(scp, sl, sgcnt, i) {
2545                     cmdp->u.cache.sg_lst[i].sg_ptr = sg_dma_address(sl);
2546 #ifdef GDTH_DMA_STATISTICS
2547                     ha->dma32_cnt++;
2548 #endif
2549                     cmdp->u.cache.sg_lst[i].sg_len = sg_dma_len(sl);
2550                 }
2551             }
2552
2553 #ifdef GDTH_STATISTICS
2554             if (max_sg < (u32)sgcnt) {
2555                 max_sg = (u32)sgcnt;
2556                 TRACE3(("GDT: max_sg = %d\n",max_sg));
2557             }
2558 #endif
2559
2560         }
2561     }
2562     /* evaluate command size, check space */
2563     if (mode64) {
2564         TRACE(("cache cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
2565                cmdp->u.cache64.DestAddr,cmdp->u.cache64.sg_canz,
2566                cmdp->u.cache64.sg_lst[0].sg_ptr,
2567                cmdp->u.cache64.sg_lst[0].sg_len));
2568         TRACE(("cache cmd: cmd %d blockno. %d, blockcnt %d\n",
2569                cmdp->OpCode,cmdp->u.cache64.BlockNo,cmdp->u.cache64.BlockCnt));
2570         ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.cache64.sg_lst) +
2571             (u16)cmdp->u.cache64.sg_canz * sizeof(gdth_sg64_str);
2572     } else {
2573         TRACE(("cache cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
2574                cmdp->u.cache.DestAddr,cmdp->u.cache.sg_canz,
2575                cmdp->u.cache.sg_lst[0].sg_ptr,
2576                cmdp->u.cache.sg_lst[0].sg_len));
2577         TRACE(("cache cmd: cmd %d blockno. %d, blockcnt %d\n",
2578                cmdp->OpCode,cmdp->u.cache.BlockNo,cmdp->u.cache.BlockCnt));
2579         ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.cache.sg_lst) +
2580             (u16)cmdp->u.cache.sg_canz * sizeof(gdth_sg_str);
2581     }
2582     if (ha->cmd_len & 3)
2583         ha->cmd_len += (4 - (ha->cmd_len & 3));
2584
2585     if (ha->cmd_cnt > 0) {
2586         if ((ha->cmd_offs_dpmem + ha->cmd_len + DPMEM_COMMAND_OFFSET) >
2587             ha->ic_all_size) {
2588             TRACE2(("gdth_fill_cache() DPMEM overflow\n"));
2589             ha->cmd_tab[cmd_index-2].cmnd = UNUSED_CMND;
2590             return 0;
2591         }
2592     }
2593
2594     /* copy command */
2595     gdth_copy_command(ha);
2596     return cmd_index;
2597 }
2598
2599 static int gdth_fill_raw_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, u8 b)
2600 {
2601     register gdth_cmd_str *cmdp;
2602     u16 i;
2603     dma_addr_t sense_paddr;
2604     int cmd_index, sgcnt, mode64;
2605     u8 t,l;
2606     struct page *page;
2607     unsigned long offset;
2608     struct gdth_cmndinfo *cmndinfo;
2609
2610     t = scp->device->id;
2611     l = scp->device->lun;
2612     cmdp = ha->pccb;
2613     TRACE(("gdth_fill_raw_cmd() cmd 0x%x bus %d ID %d LUN %d\n",
2614            scp->cmnd[0],b,t,l));
2615
2616     if (ha->type==GDT_EISA && ha->cmd_cnt>0)
2617         return 0;
2618
2619     mode64 = (ha->raw_feat & GDT_64BIT) ? TRUE : FALSE;
2620
2621     cmdp->Service = SCSIRAWSERVICE;
2622     cmdp->RequestBuffer = scp;
2623     /* search free command index */
2624     if (!(cmd_index=gdth_get_cmd_index(ha))) {
2625         TRACE(("GDT: No free command index found\n"));
2626         return 0;
2627     }
2628     /* if it's the first command, set command semaphore */
2629     if (ha->cmd_cnt == 0)
2630         gdth_set_sema0(ha);
2631
2632     cmndinfo = gdth_cmnd_priv(scp);
2633     /* fill command */
2634     if (cmndinfo->OpCode != -1) {
2635         cmdp->OpCode           = cmndinfo->OpCode; /* special raw cmd. */
2636         cmdp->BoardNode        = LOCALBOARD;
2637         if (mode64) {
2638             cmdp->u.raw64.direction = (cmndinfo->phase >> 8);
2639             TRACE2(("special raw cmd 0x%x param 0x%x\n",
2640                     cmdp->OpCode, cmdp->u.raw64.direction));
2641             /* evaluate command size */
2642             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw64.sg_lst);
2643         } else {
2644             cmdp->u.raw.direction  = (cmndinfo->phase >> 8);
2645             TRACE2(("special raw cmd 0x%x param 0x%x\n",
2646                     cmdp->OpCode, cmdp->u.raw.direction));
2647             /* evaluate command size */
2648             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw.sg_lst);
2649         }
2650
2651     } else {
2652         page = virt_to_page(scp->sense_buffer);
2653         offset = (unsigned long)scp->sense_buffer & ~PAGE_MASK;
2654         sense_paddr = pci_map_page(ha->pdev,page,offset,
2655                                    16,PCI_DMA_FROMDEVICE);
2656
2657         cmndinfo->sense_paddr  = sense_paddr;
2658         cmdp->OpCode           = GDT_WRITE;             /* always */
2659         cmdp->BoardNode        = LOCALBOARD;
2660         if (mode64) {
2661             cmdp->u.raw64.reserved   = 0;
2662             cmdp->u.raw64.mdisc_time = 0;
2663             cmdp->u.raw64.mcon_time  = 0;
2664             cmdp->u.raw64.clen       = scp->cmd_len;
2665             cmdp->u.raw64.target     = t;
2666             cmdp->u.raw64.lun        = l;
2667             cmdp->u.raw64.bus        = b;
2668             cmdp->u.raw64.priority   = 0;
2669             cmdp->u.raw64.sdlen      = scsi_bufflen(scp);
2670             cmdp->u.raw64.sense_len  = 16;
2671             cmdp->u.raw64.sense_data = sense_paddr;
2672             cmdp->u.raw64.direction  =
2673                 gdth_direction_tab[scp->cmnd[0]]==DOU ? GDTH_DATA_OUT:GDTH_DATA_IN;
2674             memcpy(cmdp->u.raw64.cmd,scp->cmnd,16);
2675             cmdp->u.raw64.sg_ranz    = 0;
2676         } else {
2677             cmdp->u.raw.reserved   = 0;
2678             cmdp->u.raw.mdisc_time = 0;
2679             cmdp->u.raw.mcon_time  = 0;
2680             cmdp->u.raw.clen       = scp->cmd_len;
2681             cmdp->u.raw.target     = t;
2682             cmdp->u.raw.lun        = l;
2683             cmdp->u.raw.bus        = b;
2684             cmdp->u.raw.priority   = 0;
2685             cmdp->u.raw.link_p     = 0;
2686             cmdp->u.raw.sdlen      = scsi_bufflen(scp);
2687             cmdp->u.raw.sense_len  = 16;
2688             cmdp->u.raw.sense_data = sense_paddr;
2689             cmdp->u.raw.direction  =
2690                 gdth_direction_tab[scp->cmnd[0]]==DOU ? GDTH_DATA_OUT:GDTH_DATA_IN;
2691             memcpy(cmdp->u.raw.cmd,scp->cmnd,12);
2692             cmdp->u.raw.sg_ranz    = 0;
2693         }
2694
2695         if (scsi_bufflen(scp)) {
2696             cmndinfo->dma_dir = PCI_DMA_BIDIRECTIONAL;
2697             sgcnt = pci_map_sg(ha->pdev, scsi_sglist(scp), scsi_sg_count(scp),
2698                                cmndinfo->dma_dir);
2699             if (mode64) {
2700                 struct scatterlist *sl;
2701
2702                 cmdp->u.raw64.sdata = (u64)-1;
2703                 cmdp->u.raw64.sg_ranz = sgcnt;
2704                 scsi_for_each_sg(scp, sl, sgcnt, i) {
2705                     cmdp->u.raw64.sg_lst[i].sg_ptr = sg_dma_address(sl);
2706 #ifdef GDTH_DMA_STATISTICS
2707                     if (cmdp->u.raw64.sg_lst[i].sg_ptr > (u64)0xffffffff)
2708                         ha->dma64_cnt++;
2709                     else
2710                         ha->dma32_cnt++;
2711 #endif
2712                     cmdp->u.raw64.sg_lst[i].sg_len = sg_dma_len(sl);
2713                 }
2714             } else {
2715                 struct scatterlist *sl;
2716
2717                 cmdp->u.raw.sdata = 0xffffffff;
2718                 cmdp->u.raw.sg_ranz = sgcnt;
2719                 scsi_for_each_sg(scp, sl, sgcnt, i) {
2720                     cmdp->u.raw.sg_lst[i].sg_ptr = sg_dma_address(sl);
2721 #ifdef GDTH_DMA_STATISTICS
2722                     ha->dma32_cnt++;
2723 #endif
2724                     cmdp->u.raw.sg_lst[i].sg_len = sg_dma_len(sl);
2725                 }
2726             }
2727
2728 #ifdef GDTH_STATISTICS
2729             if (max_sg < sgcnt) {
2730                 max_sg = sgcnt;
2731                 TRACE3(("GDT: max_sg = %d\n",sgcnt));
2732             }
2733 #endif
2734
2735         }
2736         if (mode64) {
2737             TRACE(("raw cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
2738                    cmdp->u.raw64.sdata,cmdp->u.raw64.sg_ranz,
2739                    cmdp->u.raw64.sg_lst[0].sg_ptr,
2740                    cmdp->u.raw64.sg_lst[0].sg_len));
2741             /* evaluate command size */
2742             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw64.sg_lst) +
2743                 (u16)cmdp->u.raw64.sg_ranz * sizeof(gdth_sg64_str);
2744         } else {
2745             TRACE(("raw cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
2746                    cmdp->u.raw.sdata,cmdp->u.raw.sg_ranz,
2747                    cmdp->u.raw.sg_lst[0].sg_ptr,
2748                    cmdp->u.raw.sg_lst[0].sg_len));
2749             /* evaluate command size */
2750             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw.sg_lst) +
2751                 (u16)cmdp->u.raw.sg_ranz * sizeof(gdth_sg_str);
2752         }
2753     }
2754     /* check space */
2755     if (ha->cmd_len & 3)
2756         ha->cmd_len += (4 - (ha->cmd_len & 3));
2757
2758     if (ha->cmd_cnt > 0) {
2759         if ((ha->cmd_offs_dpmem + ha->cmd_len + DPMEM_COMMAND_OFFSET) >
2760             ha->ic_all_size) {
2761             TRACE2(("gdth_fill_raw() DPMEM overflow\n"));
2762             ha->cmd_tab[cmd_index-2].cmnd = UNUSED_CMND;
2763             return 0;
2764         }
2765     }
2766
2767     /* copy command */
2768     gdth_copy_command(ha);
2769     return cmd_index;
2770 }
2771
2772 static int gdth_special_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp)
2773 {
2774     register gdth_cmd_str *cmdp;
2775     struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
2776     int cmd_index;
2777
2778     cmdp= ha->pccb;
2779     TRACE2(("gdth_special_cmd(): "));
2780
2781     if (ha->type==GDT_EISA && ha->cmd_cnt>0)
2782         return 0;
2783
2784     *cmdp = *cmndinfo->internal_cmd_str;
2785     cmdp->RequestBuffer = scp;
2786
2787     /* search free command index */
2788     if (!(cmd_index=gdth_get_cmd_index(ha))) {
2789         TRACE(("GDT: No free command index found\n"));
2790         return 0;
2791     }
2792
2793     /* if it's the first command, set command semaphore */
2794     if (ha->cmd_cnt == 0)
2795        gdth_set_sema0(ha);
2796
2797     /* evaluate command size, check space */
2798     if (cmdp->OpCode == GDT_IOCTL) {
2799         TRACE2(("IOCTL\n"));
2800         ha->cmd_len =
2801             GDTOFFSOF(gdth_cmd_str,u.ioctl.p_param) + sizeof(u64);
2802     } else if (cmdp->Service == CACHESERVICE) {
2803         TRACE2(("cache command %d\n",cmdp->OpCode));
2804         if (ha->cache_feat & GDT_64BIT)
2805             ha->cmd_len =
2806                 GDTOFFSOF(gdth_cmd_str,u.cache64.sg_lst) + sizeof(gdth_sg64_str);
2807         else
2808             ha->cmd_len =
2809                 GDTOFFSOF(gdth_cmd_str,u.cache.sg_lst) + sizeof(gdth_sg_str);
2810     } else if (cmdp->Service == SCSIRAWSERVICE) {
2811         TRACE2(("raw command %d\n",cmdp->OpCode));
2812         if (ha->raw_feat & GDT_64BIT)
2813             ha->cmd_len =
2814                 GDTOFFSOF(gdth_cmd_str,u.raw64.sg_lst) + sizeof(gdth_sg64_str);
2815         else
2816             ha->cmd_len =
2817                 GDTOFFSOF(gdth_cmd_str,u.raw.sg_lst) + sizeof(gdth_sg_str);
2818     }
2819
2820     if (ha->cmd_len & 3)
2821         ha->cmd_len += (4 - (ha->cmd_len & 3));
2822
2823     if (ha->cmd_cnt > 0) {
2824         if ((ha->cmd_offs_dpmem + ha->cmd_len + DPMEM_COMMAND_OFFSET) >
2825             ha->ic_all_size) {
2826             TRACE2(("gdth_special_cmd() DPMEM overflow\n"));
2827             ha->cmd_tab[cmd_index-2].cmnd = UNUSED_CMND;
2828             return 0;
2829         }
2830     }
2831
2832     /* copy command */
2833     gdth_copy_command(ha);
2834     return cmd_index;
2835 }
2836
2837
2838 /* Controller event handling functions */
2839 static gdth_evt_str *gdth_store_event(gdth_ha_str *ha, u16 source,
2840                                       u16 idx, gdth_evt_data *evt)
2841 {
2842     gdth_evt_str *e;
2843     struct timeval tv;
2844
2845     /* no GDTH_LOCK_HA() ! */
2846     TRACE2(("gdth_store_event() source %d idx %d\n", source, idx));
2847     if (source == 0)                        /* no source -> no event */
2848         return NULL;
2849
2850     if (ebuffer[elastidx].event_source == source &&
2851         ebuffer[elastidx].event_idx == idx &&
2852         ((evt->size != 0 && ebuffer[elastidx].event_data.size != 0 &&
2853             !memcmp((char *)&ebuffer[elastidx].event_data.eu,
2854             (char *)&evt->eu, evt->size)) ||
2855         (evt->size == 0 && ebuffer[elastidx].event_data.size == 0 &&
2856             !strcmp((char *)&ebuffer[elastidx].event_data.event_string,
2857             (char *)&evt->event_string)))) {
2858         e = &ebuffer[elastidx];
2859         do_gettimeofday(&tv);
2860         e->last_stamp = tv.tv_sec;
2861         ++e->same_count;
2862     } else {
2863         if (ebuffer[elastidx].event_source != 0) {  /* entry not free ? */
2864             ++elastidx;
2865             if (elastidx == MAX_EVENTS)
2866                 elastidx = 0;
2867             if (elastidx == eoldidx) {              /* reached mark ? */
2868                 ++eoldidx;
2869                 if (eoldidx == MAX_EVENTS)
2870                     eoldidx = 0;
2871             }
2872         }
2873         e = &ebuffer[elastidx];
2874         e->event_source = source;
2875         e->event_idx = idx;
2876         do_gettimeofday(&tv);
2877         e->first_stamp = e->last_stamp = tv.tv_sec;
2878         e->same_count = 1;
2879         e->event_data = *evt;
2880         e->application = 0;
2881     }
2882     return e;
2883 }
2884
2885 static int gdth_read_event(gdth_ha_str *ha, int handle, gdth_evt_str *estr)
2886 {
2887     gdth_evt_str *e;
2888     int eindex;
2889     unsigned long flags;
2890
2891     TRACE2(("gdth_read_event() handle %d\n", handle));
2892     spin_lock_irqsave(&ha->smp_lock, flags);
2893     if (handle == -1)
2894         eindex = eoldidx;
2895     else
2896         eindex = handle;
2897     estr->event_source = 0;
2898
2899     if (eindex < 0 || eindex >= MAX_EVENTS) {
2900         spin_unlock_irqrestore(&ha->smp_lock, flags);
2901         return eindex;
2902     }
2903     e = &ebuffer[eindex];
2904     if (e->event_source != 0) {
2905         if (eindex != elastidx) {
2906             if (++eindex == MAX_EVENTS)
2907                 eindex = 0;
2908         } else {
2909             eindex = -1;
2910         }
2911         memcpy(estr, e, sizeof(gdth_evt_str));
2912     }
2913     spin_unlock_irqrestore(&ha->smp_lock, flags);
2914     return eindex;
2915 }
2916
2917 static void gdth_readapp_event(gdth_ha_str *ha,
2918                                u8 application, gdth_evt_str *estr)
2919 {
2920     gdth_evt_str *e;
2921     int eindex;
2922     unsigned long flags;
2923     u8 found = FALSE;
2924
2925     TRACE2(("gdth_readapp_event() app. %d\n", application));
2926     spin_lock_irqsave(&ha->smp_lock, flags);
2927     eindex = eoldidx;
2928     for (;;) {
2929         e = &ebuffer[eindex];
2930         if (e->event_source == 0)
2931             break;
2932         if ((e->application & application) == 0) {
2933             e->application |= application;
2934             found = TRUE;
2935             break;
2936         }
2937         if (eindex == elastidx)
2938             break;
2939         if (++eindex == MAX_EVENTS)
2940             eindex = 0;
2941     }
2942     if (found)
2943         memcpy(estr, e, sizeof(gdth_evt_str));
2944     else
2945         estr->event_source = 0;
2946     spin_unlock_irqrestore(&ha->smp_lock, flags);
2947 }
2948
2949 static void gdth_clear_events(void)
2950 {
2951     TRACE(("gdth_clear_events()"));
2952
2953     eoldidx = elastidx = 0;
2954     ebuffer[0].event_source = 0;
2955 }
2956
2957
2958 /* SCSI interface functions */
2959
2960 static irqreturn_t __gdth_interrupt(gdth_ha_str *ha,
2961                                     int gdth_from_wait, int* pIndex)
2962 {
2963     gdt6m_dpram_str __iomem *dp6m_ptr = NULL;
2964     gdt6_dpram_str __iomem *dp6_ptr;
2965     gdt2_dpram_str __iomem *dp2_ptr;
2966     Scsi_Cmnd *scp;
2967     int rval, i;
2968     u8 IStatus;
2969     u16 Service;
2970     unsigned long flags = 0;
2971 #ifdef INT_COAL
2972     int coalesced = FALSE;
2973     int next = FALSE;
2974     gdth_coal_status *pcs = NULL;
2975     int act_int_coal = 0;
2976 #endif
2977
2978     TRACE(("gdth_interrupt() IRQ %d\n", ha->irq));
2979
2980     /* if polling and not from gdth_wait() -> return */
2981     if (gdth_polling) {
2982         if (!gdth_from_wait) {
2983             return IRQ_HANDLED;
2984         }
2985     }
2986
2987     if (!gdth_polling)
2988         spin_lock_irqsave(&ha->smp_lock, flags);
2989
2990     /* search controller */
2991     IStatus = gdth_get_status(ha);
2992     if (IStatus == 0) {
2993         /* spurious interrupt */
2994         if (!gdth_polling)
2995             spin_unlock_irqrestore(&ha->smp_lock, flags);
2996         return IRQ_HANDLED;
2997     }
2998
2999 #ifdef GDTH_STATISTICS
3000     ++act_ints;
3001 #endif
3002
3003 #ifdef INT_COAL
3004     /* See if the fw is returning coalesced status */
3005     if (IStatus == COALINDEX) {
3006         /* Coalesced status.  Setup the initial status
3007            buffer pointer and flags */
3008         pcs = ha->coal_stat;
3009         coalesced = TRUE;
3010         next = TRUE;
3011     }
3012
3013     do {
3014         if (coalesced) {
3015             /* For coalesced requests all status
3016                information is found in the status buffer */
3017             IStatus = (u8)(pcs->status & 0xff);
3018         }
3019 #endif
3020
3021         if (ha->type == GDT_EISA) {
3022             if (IStatus & 0x80) {                       /* error flag */
3023                 IStatus &= ~0x80;
3024                 ha->status = inw(ha->bmic + MAILBOXREG+8);
3025                 TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3026             } else                                      /* no error */
3027                 ha->status = S_OK;
3028             ha->info = inl(ha->bmic + MAILBOXREG+12);
3029             ha->service = inw(ha->bmic + MAILBOXREG+10);
3030             ha->info2 = inl(ha->bmic + MAILBOXREG+4);
3031
3032             outb(0xff, ha->bmic + EDOORREG);    /* acknowledge interrupt */
3033             outb(0x00, ha->bmic + SEMA1REG);    /* reset status semaphore */
3034         } else if (ha->type == GDT_ISA) {
3035             dp2_ptr = ha->brd;
3036             if (IStatus & 0x80) {                       /* error flag */
3037                 IStatus &= ~0x80;
3038                 ha->status = readw(&dp2_ptr->u.ic.Status);
3039                 TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3040             } else                                      /* no error */
3041                 ha->status = S_OK;
3042             ha->info = readl(&dp2_ptr->u.ic.Info[0]);
3043             ha->service = readw(&dp2_ptr->u.ic.Service);
3044             ha->info2 = readl(&dp2_ptr->u.ic.Info[1]);
3045
3046             writeb(0xff, &dp2_ptr->io.irqdel); /* acknowledge interrupt */
3047             writeb(0, &dp2_ptr->u.ic.Cmd_Index);/* reset command index */
3048             writeb(0, &dp2_ptr->io.Sema1);     /* reset status semaphore */
3049         } else if (ha->type == GDT_PCI) {
3050             dp6_ptr = ha->brd;
3051             if (IStatus & 0x80) {                       /* error flag */
3052                 IStatus &= ~0x80;
3053                 ha->status = readw(&dp6_ptr->u.ic.Status);
3054                 TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3055             } else                                      /* no error */
3056                 ha->status = S_OK;
3057             ha->info = readl(&dp6_ptr->u.ic.Info[0]);
3058             ha->service = readw(&dp6_ptr->u.ic.Service);
3059             ha->info2 = readl(&dp6_ptr->u.ic.Info[1]);
3060
3061             writeb(0xff, &dp6_ptr->io.irqdel); /* acknowledge interrupt */
3062             writeb(0, &dp6_ptr->u.ic.Cmd_Index);/* reset command index */
3063             writeb(0, &dp6_ptr->io.Sema1);     /* reset status semaphore */
3064         } else if (ha->type == GDT_PCINEW) {
3065             if (IStatus & 0x80) {                       /* error flag */
3066                 IStatus &= ~0x80;
3067                 ha->status = inw(PTR2USHORT(&ha->plx->status));
3068                 TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3069             } else
3070                 ha->status = S_OK;
3071             ha->info = inl(PTR2USHORT(&ha->plx->info[0]));
3072             ha->service = inw(PTR2USHORT(&ha->plx->service));
3073             ha->info2 = inl(PTR2USHORT(&ha->plx->info[1]));
3074
3075             outb(0xff, PTR2USHORT(&ha->plx->edoor_reg));
3076             outb(0x00, PTR2USHORT(&ha->plx->sema1_reg));
3077         } else if (ha->type == GDT_PCIMPR) {
3078             dp6m_ptr = ha->brd;
3079             if (IStatus & 0x80) {                       /* error flag */
3080                 IStatus &= ~0x80;
3081 #ifdef INT_COAL
3082                 if (coalesced)
3083                     ha->status = pcs->ext_status & 0xffff;
3084                 else
3085 #endif
3086                     ha->status = readw(&dp6m_ptr->i960r.status);
3087                 TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3088             } else                                      /* no error */
3089                 ha->status = S_OK;
3090 #ifdef INT_COAL
3091             /* get information */
3092             if (coalesced) {
3093                 ha->info = pcs->info0;
3094                 ha->info2 = pcs->info1;
3095                 ha->service = (pcs->ext_status >> 16) & 0xffff;
3096             } else
3097 #endif
3098             {
3099                 ha->info = readl(&dp6m_ptr->i960r.info[0]);
3100                 ha->service = readw(&dp6m_ptr->i960r.service);
3101                 ha->info2 = readl(&dp6m_ptr->i960r.info[1]);
3102             }
3103             /* event string */
3104             if (IStatus == ASYNCINDEX) {
3105                 if (ha->service != SCREENSERVICE &&
3106                     (ha->fw_vers & 0xff) >= 0x1a) {
3107                     ha->dvr.severity = readb
3108                         (&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.severity);
3109                     for (i = 0; i < 256; ++i) {
3110                         ha->dvr.event_string[i] = readb
3111                             (&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.evt_str[i]);
3112                         if (ha->dvr.event_string[i] == 0)
3113                             break;
3114                     }
3115                 }
3116             }
3117 #ifdef INT_COAL
3118             /* Make sure that non coalesced interrupts get cleared
3119                before being handled by gdth_async_event/gdth_sync_event */
3120             if (!coalesced)
3121 #endif
3122             {
3123                 writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
3124                 writeb(0, &dp6m_ptr->i960r.sema1_reg);
3125             }
3126         } else {
3127             TRACE2(("gdth_interrupt() unknown controller type\n"));
3128             if (!gdth_polling)
3129                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3130             return IRQ_HANDLED;
3131         }
3132
3133         TRACE(("gdth_interrupt() index %d stat %d info %d\n",
3134                IStatus,ha->status,ha->info));
3135
3136         if (gdth_from_wait) {
3137             *pIndex = (int)IStatus;
3138         }
3139
3140         if (IStatus == ASYNCINDEX) {
3141             TRACE2(("gdth_interrupt() async. event\n"));
3142             gdth_async_event(ha);
3143             if (!gdth_polling)
3144                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3145             gdth_next(ha);
3146             return IRQ_HANDLED;
3147         }
3148
3149         if (IStatus == SPEZINDEX) {
3150             TRACE2(("Service unknown or not initialized !\n"));
3151             ha->dvr.size = sizeof(ha->dvr.eu.driver);
3152             ha->dvr.eu.driver.ionode = ha->hanum;
3153             gdth_store_event(ha, ES_DRIVER, 4, &ha->dvr);
3154             if (!gdth_polling)
3155                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3156             return IRQ_HANDLED;
3157         }
3158         scp     = ha->cmd_tab[IStatus-2].cmnd;
3159         Service = ha->cmd_tab[IStatus-2].service;
3160         ha->cmd_tab[IStatus-2].cmnd = UNUSED_CMND;
3161         if (scp == UNUSED_CMND) {
3162             TRACE2(("gdth_interrupt() index to unused command (%d)\n",IStatus));
3163             ha->dvr.size = sizeof(ha->dvr.eu.driver);
3164             ha->dvr.eu.driver.ionode = ha->hanum;
3165             ha->dvr.eu.driver.index = IStatus;
3166             gdth_store_event(ha, ES_DRIVER, 1, &ha->dvr);
3167             if (!gdth_polling)
3168                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3169             return IRQ_HANDLED;
3170         }
3171         if (scp == INTERNAL_CMND) {
3172             TRACE(("gdth_interrupt() answer to internal command\n"));
3173             if (!gdth_polling)
3174                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3175             return IRQ_HANDLED;
3176         }
3177
3178         TRACE(("gdth_interrupt() sync. status\n"));
3179         rval = gdth_sync_event(ha,Service,IStatus,scp);
3180         if (!gdth_polling)
3181             spin_unlock_irqrestore(&ha->smp_lock, flags);
3182         if (rval == 2) {
3183             gdth_putq(ha, scp, gdth_cmnd_priv(scp)->priority);
3184         } else if (rval == 1) {
3185             gdth_scsi_done(scp);
3186         }
3187
3188 #ifdef INT_COAL
3189         if (coalesced) {
3190             /* go to the next status in the status buffer */
3191             ++pcs;
3192 #ifdef GDTH_STATISTICS
3193             ++act_int_coal;
3194             if (act_int_coal > max_int_coal) {
3195                 max_int_coal = act_int_coal;
3196                 printk("GDT: max_int_coal = %d\n",(u16)max_int_coal);
3197             }
3198 #endif
3199             /* see if there is another status */
3200             if (pcs->status == 0)
3201                 /* Stop the coalesce loop */
3202                 next = FALSE;
3203         }
3204     } while (next);
3205
3206     /* coalescing only for new GDT_PCIMPR controllers available */
3207     if (ha->type == GDT_PCIMPR && coalesced) {
3208         writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
3209         writeb(0, &dp6m_ptr->i960r.sema1_reg);
3210     }
3211 #endif
3212
3213     gdth_next(ha);
3214     return IRQ_HANDLED;
3215 }
3216
3217 static irqreturn_t gdth_interrupt(int irq, void *dev_id)
3218 {
3219         gdth_ha_str *ha = dev_id;
3220
3221         return __gdth_interrupt(ha, false, NULL);
3222 }
3223
3224 static int gdth_sync_event(gdth_ha_str *ha, int service, u8 index,
3225                                                               Scsi_Cmnd *scp)
3226 {
3227     gdth_msg_str *msg;
3228     gdth_cmd_str *cmdp;
3229     u8 b, t;
3230     struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
3231
3232     cmdp = ha->pccb;
3233     TRACE(("gdth_sync_event() serv %d status %d\n",
3234            service,ha->status));
3235
3236     if (service == SCREENSERVICE) {
3237         msg  = ha->pmsg;
3238         TRACE(("len: %d, answer: %d, ext: %d, alen: %d\n",
3239                msg->msg_len,msg->msg_answer,msg->msg_ext,msg->msg_alen));
3240         if (msg->msg_len > MSGLEN+1)
3241             msg->msg_len = MSGLEN+1;
3242         if (msg->msg_len)
3243             if (!(msg->msg_answer && msg->msg_ext)) {
3244                 msg->msg_text[msg->msg_len] = '\0';
3245                 printk("%s",msg->msg_text);
3246             }
3247
3248         if (msg->msg_ext && !msg->msg_answer) {
3249             while (gdth_test_busy(ha))
3250                 gdth_delay(0);
3251             cmdp->Service       = SCREENSERVICE;
3252             cmdp->RequestBuffer = SCREEN_CMND;
3253             gdth_get_cmd_index(ha);
3254             gdth_set_sema0(ha);
3255             cmdp->OpCode        = GDT_READ;
3256             cmdp->BoardNode     = LOCALBOARD;
3257             cmdp->u.screen.reserved  = 0;
3258             cmdp->u.screen.su.msg.msg_handle= msg->msg_handle;
3259             cmdp->u.screen.su.msg.msg_addr  = ha->msg_phys;
3260             ha->cmd_offs_dpmem = 0;
3261             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.screen.su.msg.msg_addr)
3262                 + sizeof(u64);
3263             ha->cmd_cnt = 0;
3264             gdth_copy_command(ha);
3265             gdth_release_event(ha);
3266             return 0;
3267         }
3268
3269         if (msg->msg_answer && msg->msg_alen) {
3270             /* default answers (getchar() not possible) */
3271             if (msg->msg_alen == 1) {
3272                 msg->msg_alen = 0;
3273                 msg->msg_len = 1;
3274                 msg->msg_text[0] = 0;
3275             } else {
3276                 msg->msg_alen -= 2;
3277                 msg->msg_len = 2;
3278                 msg->msg_text[0] = 1;
3279                 msg->msg_text[1] = 0;
3280             }
3281             msg->msg_ext    = 0;
3282             msg->msg_answer = 0;
3283             while (gdth_test_busy(ha))
3284                 gdth_delay(0);
3285             cmdp->Service       = SCREENSERVICE;
3286             cmdp->RequestBuffer = SCREEN_CMND;
3287             gdth_get_cmd_index(ha);
3288             gdth_set_sema0(ha);
3289             cmdp->OpCode        = GDT_WRITE;
3290             cmdp->BoardNode     = LOCALBOARD;
3291             cmdp->u.screen.reserved  = 0;
3292             cmdp->u.screen.su.msg.msg_handle= msg->msg_handle;
3293             cmdp->u.screen.su.msg.msg_addr  = ha->msg_phys;
3294             ha->cmd_offs_dpmem = 0;
3295             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.screen.su.msg.msg_addr)
3296                 + sizeof(u64);
3297             ha->cmd_cnt = 0;
3298             gdth_copy_command(ha);
3299             gdth_release_event(ha);
3300             return 0;
3301         }
3302         printk("\n");
3303
3304     } else {
3305         b = scp->device->channel;
3306         t = scp->device->id;
3307         if (cmndinfo->OpCode == -1 && b != ha->virt_bus) {
3308             ha->raw[BUS_L2P(ha,b)].io_cnt[t]--;
3309         }
3310         /* cache or raw service */
3311         if (ha->status == S_BSY) {
3312             TRACE2(("Controller busy -> retry !\n"));
3313             if (cmndinfo->OpCode == GDT_MOUNT)
3314                 cmndinfo->OpCode = GDT_CLUST_INFO;
3315             /* retry */
3316             return 2;
3317         }
3318         if (scsi_bufflen(scp))
3319             pci_unmap_sg(ha->pdev, scsi_sglist(scp), scsi_sg_count(scp),
3320                          cmndinfo->dma_dir);
3321
3322         if (cmndinfo->sense_paddr)
3323             pci_unmap_page(ha->pdev, cmndinfo->sense_paddr, 16,
3324                                                            PCI_DMA_FROMDEVICE);
3325
3326         if (ha->status == S_OK) {
3327             cmndinfo->status = S_OK;
3328             cmndinfo->info = ha->info;
3329             if (cmndinfo->OpCode != -1) {
3330                 TRACE2(("gdth_sync_event(): special cmd 0x%x OK\n",
3331                         cmndinfo->OpCode));
3332                 /* special commands GDT_CLUST_INFO/GDT_MOUNT ? */
3333                 if (cmndinfo->OpCode == GDT_CLUST_INFO) {
3334                     ha->hdr[t].cluster_type = (u8)ha->info;
3335                     if (!(ha->hdr[t].cluster_type &
3336                         CLUSTER_MOUNTED)) {
3337                         /* NOT MOUNTED -> MOUNT */
3338                         cmndinfo->OpCode = GDT_MOUNT;
3339                         if (ha->hdr[t].cluster_type &
3340                             CLUSTER_RESERVED) {
3341                             /* cluster drive RESERVED (on the other node) */
3342                             cmndinfo->phase = -2;      /* reservation conflict */
3343                         }
3344                     } else {
3345                         cmndinfo->OpCode = -1;
3346                     }
3347                 } else {
3348                     if (cmndinfo->OpCode == GDT_MOUNT) {
3349                         ha->hdr[t].cluster_type |= CLUSTER_MOUNTED;
3350                         ha->hdr[t].media_changed = TRUE;
3351                     } else if (cmndinfo->OpCode == GDT_UNMOUNT) {
3352                         ha->hdr[t].cluster_type &= ~CLUSTER_MOUNTED;
3353                         ha->hdr[t].media_changed = TRUE;
3354                     }
3355                     cmndinfo->OpCode = -1;
3356                 }
3357                 /* retry */
3358                 cmndinfo->priority = HIGH_PRI;
3359                 return 2;
3360             } else {
3361                 /* RESERVE/RELEASE ? */
3362                 if (scp->cmnd[0] == RESERVE) {
3363                     ha->hdr[t].cluster_type |= CLUSTER_RESERVED;
3364                 } else if (scp->cmnd[0] == RELEASE) {
3365                     ha->hdr[t].cluster_type &= ~CLUSTER_RESERVED;
3366                 }
3367                 scp->result = DID_OK << 16;
3368                 scp->sense_buffer[0] = 0;
3369             }
3370         } else {
3371             cmndinfo->status = ha->status;
3372             cmndinfo->info = ha->info;
3373
3374             if (cmndinfo->OpCode != -1) {
3375                 TRACE2(("gdth_sync_event(): special cmd 0x%x error 0x%x\n",
3376                         cmndinfo->OpCode, ha->status));
3377                 if (cmndinfo->OpCode == GDT_SCAN_START ||
3378                     cmndinfo->OpCode == GDT_SCAN_END) {
3379                     cmndinfo->OpCode = -1;
3380                     /* retry */
3381                     cmndinfo->priority = HIGH_PRI;
3382                     return 2;
3383                 }
3384                 memset((char*)scp->sense_buffer,0,16);
3385                 scp->sense_buffer[0] = 0x70;
3386                 scp->sense_buffer[2] = NOT_READY;
3387                 scp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
3388             } else if (service == CACHESERVICE) {
3389                 if (ha->status == S_CACHE_UNKNOWN &&
3390                     (ha->hdr[t].cluster_type &
3391                      CLUSTER_RESERVE_STATE) == CLUSTER_RESERVE_STATE) {
3392                     /* bus reset -> force GDT_CLUST_INFO */
3393                     ha->hdr[t].cluster_type &= ~CLUSTER_RESERVED;
3394                 }
3395                 memset((char*)scp->sense_buffer,0,16);
3396                 if (ha->status == (u16)S_CACHE_RESERV) {
3397                     scp->result = (DID_OK << 16) | (RESERVATION_CONFLICT << 1);
3398                 } else {
3399                     scp->sense_buffer[0] = 0x70;
3400                     scp->sense_buffer[2] = NOT_READY;
3401                     scp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
3402                 }
3403                 if (!cmndinfo->internal_command) {
3404                     ha->dvr.size = sizeof(ha->dvr.eu.sync);
3405                     ha->dvr.eu.sync.ionode  = ha->hanum;
3406                     ha->dvr.eu.sync.service = service;
3407                     ha->dvr.eu.sync.status  = ha->status;
3408                     ha->dvr.eu.sync.info    = ha->info;
3409                     ha->dvr.eu.sync.hostdrive = t;
3410                     if (ha->status >= 0x8000)
3411                         gdth_store_event(ha, ES_SYNC, 0, &ha->dvr);
3412                     else
3413                         gdth_store_event(ha, ES_SYNC, service, &ha->dvr);
3414                 }
3415             } else {
3416                 /* sense buffer filled from controller firmware (DMA) */
3417                 if (ha->status != S_RAW_SCSI || ha->info >= 0x100) {
3418                     scp->result = DID_BAD_TARGET << 16;
3419                 } else {
3420                     scp->result = (DID_OK << 16) | ha->info;
3421                 }
3422             }
3423         }
3424         if (!cmndinfo->wait_for_completion)
3425             cmndinfo->wait_for_completion++;
3426         else
3427             return 1;
3428     }
3429
3430     return 0;
3431 }
3432
3433 static char *async_cache_tab[] = {
3434 /* 0*/  "\011\000\002\002\002\004\002\006\004"
3435         "GDT HA %u, service %u, async. status %u/%lu unknown",
3436 /* 1*/  "\011\000\002\002\002\004\002\006\004"
3437         "GDT HA %u, service %u, async. status %u/%lu unknown",
3438 /* 2*/  "\005\000\002\006\004"
3439         "GDT HA %u, Host Drive %lu not ready",
3440 /* 3*/  "\005\000\002\006\004"
3441         "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",
3442 /* 4*/  "\005\000\002\006\004"
3443         "GDT HA %u, mirror update on Host Drive %lu failed",
3444 /* 5*/  "\005\000\002\006\004"
3445         "GDT HA %u, Mirror Drive %lu failed",
3446 /* 6*/  "\005\000\002\006\004"
3447         "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",
3448 /* 7*/  "\005\000\002\006\004"
3449         "GDT HA %u, Host Drive %lu write protected",
3450 /* 8*/  "\005\000\002\006\004"
3451         "GDT HA %u, media changed in Host Drive %lu",
3452 /* 9*/  "\005\000\002\006\004"
3453         "GDT HA %u, Host Drive %lu is offline",
3454 /*10*/  "\005\000\002\006\004"
3455         "GDT HA %u, media change of Mirror Drive %lu",
3456 /*11*/  "\005\000\002\006\004"
3457         "GDT HA %u, Mirror Drive %lu is write protected",
3458 /*12*/  "\005\000\002\006\004"
3459         "GDT HA %u, general error on Host Drive %lu. Please check the devices of this drive!",
3460 /*13*/  "\007\000\002\006\002\010\002"
3461         "GDT HA %u, Array Drive %u: Cache Drive %u failed",
3462 /*14*/  "\005\000\002\006\002"
3463         "GDT HA %u, Array Drive %u: FAIL state entered",
3464 /*15*/  "\005\000\002\006\002"
3465         "GDT HA %u, Array Drive %u: error",
3466 /*16*/  "\007\000\002\006\002\010\002"
3467         "GDT HA %u, Array Drive %u: failed drive replaced by Cache Drive %u",
3468 /*17*/  "\005\000\002\006\002"
3469         "GDT HA %u, Array Drive %u: parity build failed",
3470 /*18*/  "\005\000\002\006\002"
3471         "GDT HA %u, Array Drive %u: drive rebuild failed",
3472 /*19*/  "\005\000\002\010\002"
3473         "GDT HA %u, Test of Hot Fix %u failed",
3474 /*20*/  "\005\000\002\006\002"
3475         "GDT HA %u, Array Drive %u: drive build finished successfully",
3476 /*21*/  "\005\000\002\006\002"
3477         "GDT HA %u, Array Drive %u: drive rebuild finished successfully",
3478 /*22*/  "\007\000\002\006\002\010\002"
3479         "GDT HA %u, Array Drive %u: Hot Fix %u activated",
3480 /*23*/  "\005\000\002\006\002"
3481         "GDT HA %u, Host Drive %u: processing of i/o aborted due to serious drive error",
3482 /*24*/  "\005\000\002\010\002"
3483         "GDT HA %u, mirror update on Cache Drive %u completed",
3484 /*25*/  "\005\000\002\010\002"
3485         "GDT HA %u, mirror update on Cache Drive %lu failed",
3486 /*26*/  "\005\000\002\006\002"
3487         "GDT HA %u, Array Drive %u: drive rebuild started",
3488 /*27*/  "\005\000\002\012\001"
3489         "GDT HA %u, Fault bus %u: SHELF OK detected",
3490 /*28*/  "\005\000\002\012\001"
3491         "GDT HA %u, Fault bus %u: SHELF not OK detected",
3492 /*29*/  "\007\000\002\012\001\013\001"
3493         "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug started",
3494 /*30*/  "\007\000\002\012\001\013\001"
3495         "GDT HA %u, Fault bus %u, ID %u: new disk detected",
3496 /*31*/  "\007\000\002\012\001\013\001"
3497         "GDT HA %u, Fault bus %u, ID %u: old disk detected",
3498 /*32*/  "\007\000\002\012\001\013\001"
3499         "GDT HA %u, Fault bus %u, ID %u: plugging an active disk is invalid",
3500 /*33*/  "\007\000\002\012\001\013\001"
3501         "GDT HA %u, Fault bus %u, ID %u: invalid device detected",
3502 /*34*/  "\011\000\002\012\001\013\001\006\004"
3503         "GDT HA %u, Fault bus %u, ID %u: insufficient disk capacity (%lu MB required)",
3504 /*35*/  "\007\000\002\012\001\013\001"
3505         "GDT HA %u, Fault bus %u, ID %u: disk write protected",
3506 /*36*/  "\007\000\002\012\001\013\001"
3507         "GDT HA %u, Fault bus %u, ID %u: disk not available",
3508 /*37*/  "\007\000\002\012\001\006\004"
3509         "GDT HA %u, Fault bus %u: swap detected (%lu)",
3510 /*38*/  "\007\000\002\012\001\013\001"
3511         "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug finished successfully",
3512 /*39*/  "\007\000\002\012\001\013\001"
3513         "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug aborted due to user Hot Plug",
3514 /*40*/  "\007\000\002\012\001\013\001"
3515         "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug aborted",
3516 /*41*/  "\007\000\002\012\001\013\001"
3517         "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug for Hot Fix started",
3518 /*42*/  "\005\000\002\006\002"
3519         "GDT HA %u, Array Drive %u: drive build started",
3520 /*43*/  "\003\000\002"
3521         "GDT HA %u, DRAM parity error detected",
3522 /*44*/  "\005\000\002\006\002"
3523         "GDT HA %u, Mirror Drive %u: update started",
3524 /*45*/  "\007\000\002\006\002\010\002"
3525         "GDT HA %u, Mirror Drive %u: Hot Fix %u activated",
3526 /*46*/  "\005\000\002\006\002"
3527         "GDT HA %u, Array Drive %u: no matching Pool Hot Fix Drive available",
3528 /*47*/  "\005\000\002\006\002"
3529         "GDT HA %u, Array Drive %u: Pool Hot Fix Drive available",
3530 /*48*/  "\005\000\002\006\002"
3531         "GDT HA %u, Mirror Drive %u: no matching Pool Hot Fix Drive available",
3532 /*49*/  "\005\000\002\006\002"
3533         "GDT HA %u, Mirror Drive %u: Pool Hot Fix Drive available",
3534 /*50*/  "\007\000\002\012\001\013\001"
3535         "GDT HA %u, SCSI bus %u, ID %u: IGNORE_WIDE_RESIDUE message received",
3536 /*51*/  "\005\000\002\006\002"
3537         "GDT HA %u, Array Drive %u: expand started",
3538 /*52*/  "\005\000\002\006\002"
3539         "GDT HA %u, Array Drive %u: expand finished successfully",
3540 /*53*/  "\005\000\002\006\002"
3541         "GDT HA %u, Array Drive %u: expand failed",
3542 /*54*/  "\003\000\002"
3543         "GDT HA %u, CPU temperature critical",
3544 /*55*/  "\003\000\002"
3545         "GDT HA %u, CPU temperature OK",
3546 /*56*/  "\005\000\002\006\004"
3547         "GDT HA %u, Host drive %lu created",
3548 /*57*/  "\005\000\002\006\002"
3549         "GDT HA %u, Array Drive %u: expand restarted",
3550 /*58*/  "\005\000\002\006\002"
3551         "GDT HA %u, Array Drive %u: expand stopped",
3552 /*59*/  "\005\000\002\010\002"
3553         "GDT HA %u, Mirror Drive %u: drive build quited",
3554 /*60*/  "\005\000\002\006\002"
3555         "GDT HA %u, Array Drive %u: parity build quited",
3556 /*61*/  "\005\000\002\006\002"
3557         "GDT HA %u, Array Drive %u: drive rebuild quited",
3558 /*62*/  "\005\000\002\006\002"
3559         "GDT HA %u, Array Drive %u: parity verify started",
3560 /*63*/  "\005\000\002\006\002"
3561         "GDT HA %u, Array Drive %u: parity verify done",
3562 /*64*/  "\005\000\002\006\002"
3563         "GDT HA %u, Array Drive %u: parity verify failed",
3564 /*65*/  "\005\000\002\006\002"
3565         "GDT HA %u, Array Drive %u: parity error detected",
3566 /*66*/  "\005\000\002\006\002"
3567         "GDT HA %u, Array Drive %u: parity verify quited",
3568 /*67*/  "\005\000\002\006\002"
3569         "GDT HA %u, Host Drive %u reserved",
3570 /*68*/  "\005\000\002\006\002"
3571         "GDT HA %u, Host Drive %u mounted and released",
3572 /*69*/  "\005\000\002\006\002"
3573         "GDT HA %u, Host Drive %u released",
3574 /*70*/  "\003\000\002"
3575         "GDT HA %u, DRAM error detected and corrected with ECC",
3576 /*71*/  "\003\000\002"
3577         "GDT HA %u, Uncorrectable DRAM error detected with ECC",
3578 /*72*/  "\011\000\002\012\001\013\001\014\001"
3579         "GDT HA %u, SCSI bus %u, ID %u, LUN %u: reassigning block",
3580 /*73*/  "\005\000\002\006\002"
3581         "GDT HA %u, Host drive %u resetted locally",
3582 /*74*/  "\005\000\002\006\002"
3583         "GDT HA %u, Host drive %u resetted remotely",
3584 /*75*/  "\003\000\002"
3585         "GDT HA %u, async. status 75 unknown",
3586 };
3587
3588
3589 static int gdth_async_event(gdth_ha_str *ha)
3590 {
3591     gdth_cmd_str *cmdp;
3592     int cmd_index;
3593
3594     cmdp= ha->pccb;
3595     TRACE2(("gdth_async_event() ha %d serv %d\n",
3596             ha->hanum, ha->service));
3597
3598     if (ha->service == SCREENSERVICE) {
3599         if (ha->status == MSG_REQUEST) {
3600             while (gdth_test_busy(ha))
3601                 gdth_delay(0);
3602             cmdp->Service       = SCREENSERVICE;
3603             cmdp->RequestBuffer = SCREEN_CMND;
3604             cmd_index = gdth_get_cmd_index(ha);
3605             gdth_set_sema0(ha);
3606             cmdp->OpCode        = GDT_READ;
3607             cmdp->BoardNode     = LOCALBOARD;
3608             cmdp->u.screen.reserved  = 0;
3609             cmdp->u.screen.su.msg.msg_handle= MSG_INV_HANDLE;
3610             cmdp->u.screen.su.msg.msg_addr  = ha->msg_phys;
3611             ha->cmd_offs_dpmem = 0;
3612             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.screen.su.msg.msg_addr)
3613                 + sizeof(u64);
3614             ha->cmd_cnt = 0;
3615             gdth_copy_command(ha);
3616             if (ha->type == GDT_EISA)
3617                 printk("[EISA slot %d] ",(u16)ha->brd_phys);
3618             else if (ha->type == GDT_ISA)
3619                 printk("[DPMEM 0x%4X] ",(u16)ha->brd_phys);
3620             else
3621                 printk("[PCI %d/%d] ",(u16)(ha->brd_phys>>8),
3622                        (u16)((ha->brd_phys>>3)&0x1f));
3623             gdth_release_event(ha);
3624         }
3625
3626     } else {
3627         if (ha->type == GDT_PCIMPR &&
3628             (ha->fw_vers & 0xff) >= 0x1a) {
3629             ha->dvr.size = 0;
3630             ha->dvr.eu.async.ionode = ha->hanum;
3631             ha->dvr.eu.async.status  = ha->status;
3632             /* severity and event_string already set! */
3633         } else {
3634             ha->dvr.size = sizeof(ha->dvr.eu.async);
3635             ha->dvr.eu.async.ionode   = ha->hanum;
3636             ha->dvr.eu.async.service = ha->service;
3637             ha->dvr.eu.async.status  = ha->status;
3638             ha->dvr.eu.async.info    = ha->info;
3639             *(u32 *)ha->dvr.eu.async.scsi_coord  = ha->info2;
3640         }
3641         gdth_store_event( ha, ES_ASYNC, ha->service, &ha->dvr );
3642         gdth_log_event( &ha->dvr, NULL );
3643
3644         /* new host drive from expand? */
3645         if (ha->service == CACHESERVICE && ha->status == 56) {
3646             TRACE2(("gdth_async_event(): new host drive %d created\n",
3647                     (u16)ha->info));
3648             /* gdth_analyse_hdrive(hanum, (u16)ha->info); */
3649         }
3650     }
3651     return 1;
3652 }
3653
3654 static void gdth_log_event(gdth_evt_data *dvr, char *buffer)
3655 {
3656     gdth_stackframe stack;
3657     char *f = NULL;
3658     int i,j;
3659
3660     TRACE2(("gdth_log_event()\n"));
3661     if (dvr->size == 0) {
3662         if (buffer == NULL) {
3663             printk("Adapter %d: %s\n",dvr->eu.async.ionode,dvr->event_string);
3664         } else {
3665             sprintf(buffer,"Adapter %d: %s\n",
3666                 dvr->eu.async.ionode,dvr->event_string);
3667         }
3668     } else if (dvr->eu.async.service == CACHESERVICE &&
3669         INDEX_OK(dvr->eu.async.status, async_cache_tab)) {
3670         TRACE2(("GDT: Async. event cache service, event no.: %d\n",
3671                 dvr->eu.async.status));
3672
3673         f = async_cache_tab[dvr->eu.async.status];
3674
3675         /* i: parameter to push, j: stack element to fill */
3676         for (j=0,i=1; i < f[0]; i+=2) {
3677             switch (f[i+1]) {
3678               case 4:
3679                 stack.b[j++] = *(u32*)&dvr->eu.stream[(int)f[i]];
3680                 break;
3681               case 2:
3682                 stack.b[j++] = *(u16*)&dvr->eu.stream[(int)f[i]];
3683                 break;
3684               case 1:
3685                 stack.b[j++] = *(u8*)&dvr->eu.stream[(int)f[i]];
3686                 break;
3687               default:
3688                 break;
3689             }
3690         }
3691
3692         if (buffer == NULL) {
3693             printk(&f[(int)f[0]],stack);
3694             printk("\n");
3695         } else {
3696             sprintf(buffer,&f[(int)f[0]],stack);
3697         }
3698
3699     } else {
3700         if (buffer == NULL) {
3701             printk("GDT HA %u, Unknown async. event service %d event no. %d\n",
3702                    dvr->eu.async.ionode,dvr->eu.async.service,dvr->eu.async.status);
3703         } else {
3704             sprintf(buffer,"GDT HA %u, Unknown async. event service %d event no. %d",
3705                     dvr->eu.async.ionode,dvr->eu.async.service,dvr->eu.async.status);
3706         }
3707     }
3708 }
3709
3710 #ifdef GDTH_STATISTICS
3711 static u8       gdth_timer_running;
3712
3713 static void gdth_timeout(unsigned long data)
3714 {
3715     u32 i;
3716     Scsi_Cmnd *nscp;
3717     gdth_ha_str *ha;
3718     unsigned long flags;
3719
3720     if(unlikely(list_empty(&gdth_instances))) {
3721             gdth_timer_running = 0;
3722             return;
3723     }
3724
3725     ha = list_first_entry(&gdth_instances, gdth_ha_str, list);
3726     spin_lock_irqsave(&ha->smp_lock, flags);
3727
3728     for (act_stats=0,i=0; i<GDTH_MAXCMDS; ++i)
3729         if (ha->cmd_tab[i].cmnd != UNUSED_CMND)
3730             ++act_stats;
3731
3732     for (act_rq=0,nscp=ha->req_first; nscp; nscp=(Scsi_Cmnd*)nscp->SCp.ptr)
3733         ++act_rq;
3734
3735     TRACE2(("gdth_to(): ints %d, ios %d, act_stats %d, act_rq %d\n",
3736             act_ints, act_ios, act_stats, act_rq));
3737     act_ints = act_ios = 0;
3738
3739     gdth_timer.expires = jiffies + 30 * HZ;
3740     add_timer(&gdth_timer);
3741     spin_unlock_irqrestore(&ha->smp_lock, flags);
3742 }
3743
3744 static void gdth_timer_init(void)
3745 {
3746         if (gdth_timer_running)
3747                 return;
3748         gdth_timer_running = 1;
3749         TRACE2(("gdth_detect(): Initializing timer !\n"));
3750         gdth_timer.expires = jiffies + HZ;
3751         gdth_timer.data = 0L;
3752         gdth_timer.function = gdth_timeout;
3753         add_timer(&gdth_timer);
3754 }
3755 #else
3756 static inline void gdth_timer_init(void)
3757 {
3758 }
3759 #endif
3760
3761 static void __init internal_setup(char *str,int *ints)
3762 {
3763     int i, argc;
3764     char *cur_str, *argv;
3765
3766     TRACE2(("internal_setup() str %s ints[0] %d\n",
3767             str ? str:"NULL", ints ? ints[0]:0));
3768
3769     /* read irq[] from ints[] */
3770     if (ints) {
3771         argc = ints[0];
3772         if (argc > 0) {
3773             if (argc > MAXHA)
3774                 argc = MAXHA;
3775             for (i = 0; i < argc; ++i)
3776                 irq[i] = ints[i+1];
3777         }
3778     }
3779
3780     /* analyse string */
3781     argv = str;
3782     while (argv && (cur_str = strchr(argv, ':'))) {
3783         int val = 0, c = *++cur_str;
3784
3785         if (c == 'n' || c == 'N')
3786             val = 0;
3787         else if (c == 'y' || c == 'Y')
3788             val = 1;
3789         else
3790             val = (int)simple_strtoul(cur_str, NULL, 0);
3791
3792         if (!strncmp(argv, "disable:", 8))
3793             disable = val;
3794         else if (!strncmp(argv, "reserve_mode:", 13))
3795             reserve_mode = val;
3796         else if (!strncmp(argv, "reverse_scan:", 13))
3797             reverse_scan = val;
3798         else if (!strncmp(argv, "hdr_channel:", 12))
3799             hdr_channel = val;
3800         else if (!strncmp(argv, "max_ids:", 8))
3801             max_ids = val;
3802         else if (!strncmp(argv, "rescan:", 7))
3803             rescan = val;
3804         else if (!strncmp(argv, "shared_access:", 14))
3805             shared_access = val;
3806         else if (!strncmp(argv, "probe_eisa_isa:", 15))
3807             probe_eisa_isa = val;
3808         else if (!strncmp(argv, "reserve_list:", 13)) {
3809             reserve_list[0] = val;
3810             for (i = 1; i < MAX_RES_ARGS; i++) {
3811                 cur_str = strchr(cur_str, ',');
3812                 if (!cur_str)
3813                     break;
3814                 if (!isdigit((int)*++cur_str)) {
3815                     --cur_str;
3816                     break;
3817                 }
3818                 reserve_list[i] =
3819                     (int)simple_strtoul(cur_str, NULL, 0);
3820             }
3821             if (!cur_str)
3822                 break;
3823             argv = ++cur_str;
3824             continue;
3825         }
3826
3827         if ((argv = strchr(argv, ',')))
3828             ++argv;
3829     }
3830 }
3831
3832 int __init option_setup(char *str)
3833 {
3834     int ints[MAXHA];
3835     char *cur = str;
3836     int i = 1;
3837
3838     TRACE2(("option_setup() str %s\n", str ? str:"NULL"));
3839
3840     while (cur && isdigit(*cur) && i < MAXHA) {
3841         ints[i++] = simple_strtoul(cur, NULL, 0);
3842         if ((cur = strchr(cur, ',')) != NULL) cur++;
3843     }
3844
3845     ints[0] = i - 1;
3846     internal_setup(cur, ints);
3847     return 1;
3848 }
3849
3850 static const char *gdth_ctr_name(gdth_ha_str *ha)
3851 {
3852     TRACE2(("gdth_ctr_name()\n"));
3853
3854     if (ha->type == GDT_EISA) {
3855         switch (ha->stype) {
3856           case GDT3_ID:
3857             return("GDT3000/3020");
3858           case GDT3A_ID:
3859             return("GDT3000A/3020A/3050A");
3860           case GDT3B_ID:
3861             return("GDT3000B/3010A");
3862         }
3863     } else if (ha->type == GDT_ISA) {
3864         return("GDT2000/2020");
3865     } else if (ha->type == GDT_PCI) {
3866         switch (ha->pdev->device) {
3867           case PCI_DEVICE_ID_VORTEX_GDT60x0:
3868             return("GDT6000/6020/6050");
3869           case PCI_DEVICE_ID_VORTEX_GDT6000B:
3870             return("GDT6000B/6010");
3871         }
3872     }
3873     /* new controllers (GDT_PCINEW, GDT_PCIMPR, ..) use board_info IOCTL! */
3874
3875     return("");
3876 }
3877
3878 static const char *gdth_info(struct Scsi_Host *shp)
3879 {
3880     gdth_ha_str *ha = shost_priv(shp);
3881
3882     TRACE2(("gdth_info()\n"));
3883     return ((const char *)ha->binfo.type_string);
3884 }
3885
3886 static enum blk_eh_timer_return gdth_timed_out(struct scsi_cmnd *scp)
3887 {
3888         gdth_ha_str *ha = shost_priv(scp->device->host);
3889         struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
3890         u8 b, t;
3891         unsigned long flags;
3892         enum blk_eh_timer_return retval = BLK_EH_NOT_HANDLED;
3893
3894         TRACE(("%s() cmd 0x%x\n", scp->cmnd[0], __func__));
3895         b = scp->device->channel;
3896         t = scp->device->id;
3897
3898         /*
3899          * We don't really honor the command timeout, but we try to
3900          * honor 6 times of the actual command timeout! So reset the
3901          * timer if this is less than 6th timeout on this command!
3902          */
3903         if (++cmndinfo->timeout_count < 6)
3904                 retval = BLK_EH_RESET_TIMER;
3905
3906         /* Reset the timeout if it is locked IO */
3907         spin_lock_irqsave(&ha->smp_lock, flags);
3908         if ((b != ha->virt_bus && ha->raw[BUS_L2P(ha, b)].lock) ||
3909             (b == ha->virt_bus && t < MAX_HDRIVES && ha->hdr[t].lock)) {
3910                 TRACE2(("%s(): locked IO, reset timeout\n", __func__));
3911                 retval = BLK_EH_RESET_TIMER;
3912         }
3913         spin_unlock_irqrestore(&ha->smp_lock, flags);
3914
3915         return retval;
3916 }
3917
3918
3919 static int gdth_eh_bus_reset(Scsi_Cmnd *scp)
3920 {
3921     gdth_ha_str *ha = shost_priv(scp->device->host);
3922     int i;
3923     unsigned long flags;
3924     Scsi_Cmnd *cmnd;
3925     u8 b;
3926
3927     TRACE2(("gdth_eh_bus_reset()\n"));
3928
3929     b = scp->device->channel;
3930
3931     /* clear command tab */
3932     spin_lock_irqsave(&ha->smp_lock, flags);
3933     for (i = 0; i < GDTH_MAXCMDS; ++i) {
3934         cmnd = ha->cmd_tab[i].cmnd;
3935         if (!SPECIAL_SCP(cmnd) && cmnd->device->channel == b)
3936             ha->cmd_tab[i].cmnd = UNUSED_CMND;
3937     }
3938     spin_unlock_irqrestore(&ha->smp_lock, flags);
3939
3940     if (b == ha->virt_bus) {
3941         /* host drives */
3942         for (i = 0; i < MAX_HDRIVES; ++i) {
3943             if (ha->hdr[i].present) {
3944                 spin_lock_irqsave(&ha->smp_lock, flags);
3945                 gdth_polling = TRUE;
3946                 while (gdth_test_busy(ha))
3947                     gdth_delay(0);
3948                 if (gdth_internal_cmd(ha, CACHESERVICE,
3949                                       GDT_CLUST_RESET, i, 0, 0))
3950                     ha->hdr[i].cluster_type &= ~CLUSTER_RESERVED;
3951                 gdth_polling = FALSE;
3952                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3953             }
3954         }
3955     } else {
3956         /* raw devices */
3957         spin_lock_irqsave(&ha->smp_lock, flags);
3958         for (i = 0; i < MAXID; ++i)
3959             ha->raw[BUS_L2P(ha,b)].io_cnt[i] = 0;
3960         gdth_polling = TRUE;
3961         while (gdth_test_busy(ha))
3962             gdth_delay(0);
3963         gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_RESET_BUS,
3964                           BUS_L2P(ha,b), 0, 0);
3965         gdth_polling = FALSE;
3966         spin_unlock_irqrestore(&ha->smp_lock, flags);
3967     }
3968     return SUCCESS;
3969 }
3970
3971 static int gdth_bios_param(struct scsi_device *sdev,struct block_device *bdev,sector_t cap,int *ip)
3972 {
3973     u8 b, t;
3974     gdth_ha_str *ha = shost_priv(sdev->host);
3975     struct scsi_device *sd;
3976     unsigned capacity;
3977
3978     sd = sdev;
3979     capacity = cap;
3980     b = sd->channel;
3981     t = sd->id;
3982     TRACE2(("gdth_bios_param() ha %d bus %d target %d\n", ha->hanum, b, t));
3983
3984     if (b != ha->virt_bus || ha->hdr[t].heads == 0) {
3985         /* raw device or host drive without mapping information */
3986         TRACE2(("Evaluate mapping\n"));
3987         gdth_eval_mapping(capacity,&ip[2],&ip[0],&ip[1]);
3988     } else {
3989         ip[0] = ha->hdr[t].heads;
3990         ip[1] = ha->hdr[t].secs;
3991         ip[2] = capacity / ip[0] / ip[1];
3992     }
3993
3994     TRACE2(("gdth_bios_param(): %d heads, %d secs, %d cyls\n",
3995             ip[0],ip[1],ip[2]));
3996     return 0;
3997 }
3998
3999
4000 static int gdth_queuecommand_lck(struct scsi_cmnd *scp,
4001                                 void (*done)(struct scsi_cmnd *))
4002 {
4003     gdth_ha_str *ha = shost_priv(scp->device->host);
4004     struct gdth_cmndinfo *cmndinfo;
4005
4006     TRACE(("gdth_queuecommand() cmd 0x%x\n", scp->cmnd[0]));
4007
4008     cmndinfo = gdth_get_cmndinfo(ha);
4009     BUG_ON(!cmndinfo);
4010
4011     scp->scsi_done = done;
4012     cmndinfo->timeout_count = 0;
4013     cmndinfo->priority = DEFAULT_PRI;
4014
4015     return __gdth_queuecommand(ha, scp, cmndinfo);
4016 }
4017
4018 static DEF_SCSI_QCMD(gdth_queuecommand)
4019
4020 static int __gdth_queuecommand(gdth_ha_str *ha, struct scsi_cmnd *scp,
4021                                 struct gdth_cmndinfo *cmndinfo)
4022 {
4023     scp->host_scribble = (unsigned char *)cmndinfo;
4024     cmndinfo->wait_for_completion = 1;
4025     cmndinfo->phase = -1;
4026     cmndinfo->OpCode = -1;
4027
4028 #ifdef GDTH_STATISTICS
4029     ++act_ios;
4030 #endif
4031
4032     gdth_putq(ha, scp, cmndinfo->priority);
4033     gdth_next(ha);
4034     return 0;
4035 }
4036
4037
4038 static int gdth_open(struct inode *inode, struct file *filep)
4039 {
4040     gdth_ha_str *ha;
4041
4042     mutex_lock(&gdth_mutex);
4043     list_for_each_entry(ha, &gdth_instances, list) {
4044         if (!ha->sdev)
4045             ha->sdev = scsi_get_host_dev(ha->shost);
4046     }
4047     mutex_unlock(&gdth_mutex);
4048
4049     TRACE(("gdth_open()\n"));
4050     return 0;
4051 }
4052
4053 static int gdth_close(struct inode *inode, struct file *filep)
4054 {
4055     TRACE(("gdth_close()\n"));
4056     return 0;
4057 }
4058
4059 static int ioc_event(void __user *arg)
4060 {
4061     gdth_ioctl_event evt;
4062     gdth_ha_str *ha;
4063     unsigned long flags;
4064
4065     if (copy_from_user(&evt, arg, sizeof(gdth_ioctl_event)))
4066         return -EFAULT;
4067     ha = gdth_find_ha(evt.ionode);
4068     if (!ha)
4069         return -EFAULT;
4070
4071     if (evt.erase == 0xff) {
4072         if (evt.event.event_source == ES_TEST)
4073             evt.event.event_data.size=sizeof(evt.event.event_data.eu.test);
4074         else if (evt.event.event_source == ES_DRIVER)
4075             evt.event.event_data.size=sizeof(evt.event.event_data.eu.driver);
4076         else if (evt.event.event_source == ES_SYNC)
4077             evt.event.event_data.size=sizeof(evt.event.event_data.eu.sync);
4078         else
4079             evt.event.event_data.size=sizeof(evt.event.event_data.eu.async);
4080         spin_lock_irqsave(&ha->smp_lock, flags);
4081         gdth_store_event(ha, evt.event.event_source, evt.event.event_idx,
4082                          &evt.event.event_data);
4083         spin_unlock_irqrestore(&ha->smp_lock, flags);
4084     } else if (evt.erase == 0xfe) {
4085         gdth_clear_events();
4086     } else if (evt.erase == 0) {
4087         evt.handle = gdth_read_event(ha, evt.handle, &evt.event);
4088     } else {
4089         gdth_readapp_event(ha, evt.erase, &evt.event);
4090     }
4091     if (copy_to_user(arg, &evt, sizeof(gdth_ioctl_event)))
4092         return -EFAULT;
4093     return 0;
4094 }
4095
4096 static int ioc_lockdrv(void __user *arg)
4097 {
4098     gdth_ioctl_lockdrv ldrv;
4099     u8 i, j;
4100     unsigned long flags;
4101     gdth_ha_str *ha;
4102
4103     if (copy_from_user(&ldrv, arg, sizeof(gdth_ioctl_lockdrv)))
4104         return -EFAULT;
4105     ha = gdth_find_ha(ldrv.ionode);
4106     if (!ha)
4107         return -EFAULT;
4108
4109     for (i = 0; i < ldrv.drive_cnt && i < MAX_HDRIVES; ++i) {
4110         j = ldrv.drives[i];
4111         if (j >= MAX_HDRIVES || !ha->hdr[j].present)
4112             continue;
4113         if (ldrv.lock) {
4114             spin_lock_irqsave(&ha->smp_lock, flags);
4115             ha->hdr[j].lock = 1;
4116             spin_unlock_irqrestore(&ha->smp_lock, flags);
4117             gdth_wait_completion(ha, ha->bus_cnt, j);
4118         } else {
4119             spin_lock_irqsave(&ha->smp_lock, flags);
4120             ha->hdr[j].lock = 0;
4121             spin_unlock_irqrestore(&ha->smp_lock, flags);
4122             gdth_next(ha);
4123         }
4124     }
4125     return 0;
4126 }
4127
4128 static int ioc_resetdrv(void __user *arg, char *cmnd)
4129 {
4130     gdth_ioctl_reset res;
4131     gdth_cmd_str cmd;
4132     gdth_ha_str *ha;
4133     int rval;
4134
4135     if (copy_from_user(&res, arg, sizeof(gdth_ioctl_reset)) ||
4136         res.number >= MAX_HDRIVES)
4137         return -EFAULT;
4138     ha = gdth_find_ha(res.ionode);
4139     if (!ha)
4140         return -EFAULT;
4141
4142     if (!ha->hdr[res.number].present)
4143         return 0;
4144     memset(&cmd, 0, sizeof(gdth_cmd_str));
4145     cmd.Service = CACHESERVICE;
4146     cmd.OpCode = GDT_CLUST_RESET;
4147     if (ha->cache_feat & GDT_64BIT)
4148         cmd.u.cache64.DeviceNo = res.number;
4149     else
4150         cmd.u.cache.DeviceNo = res.number;
4151
4152     rval = __gdth_execute(ha->sdev, &cmd, cmnd, 30, NULL);
4153     if (rval < 0)
4154         return rval;
4155     res.status = rval;
4156
4157     if (copy_to_user(arg, &res, sizeof(gdth_ioctl_reset)))
4158         return -EFAULT;
4159     return 0;
4160 }
4161
4162 static int ioc_general(void __user *arg, char *cmnd)
4163 {
4164     gdth_ioctl_general gen;
4165     char *buf = NULL;
4166     u64 paddr;
4167     gdth_ha_str *ha;
4168     int rval;
4169
4170     if (copy_from_user(&gen, arg, sizeof(gdth_ioctl_general)))
4171         return -EFAULT;
4172     ha = gdth_find_ha(gen.ionode);
4173     if (!ha)
4174         return -EFAULT;
4175
4176     if (gen.data_len > INT_MAX)
4177         return -EINVAL;
4178     if (gen.sense_len > INT_MAX)
4179         return -EINVAL;
4180     if (gen.data_len + gen.sense_len > INT_MAX)
4181         return -EINVAL;
4182
4183     if (gen.data_len + gen.sense_len != 0) {
4184         if (!(buf = gdth_ioctl_alloc(ha, gen.data_len + gen.sense_len,
4185                                      FALSE, &paddr)))
4186             return -EFAULT;
4187         if (copy_from_user(buf, arg + sizeof(gdth_ioctl_general),
4188                            gen.data_len + gen.sense_len)) {
4189             gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
4190             return -EFAULT;
4191         }
4192
4193         if (gen.command.OpCode == GDT_IOCTL) {
4194             gen.command.u.ioctl.p_param = paddr;
4195         } else if (gen.command.Service == CACHESERVICE) {
4196             if (ha->cache_feat & GDT_64BIT) {
4197                 /* copy elements from 32-bit IOCTL structure */
4198                 gen.command.u.cache64.BlockCnt = gen.command.u.cache.BlockCnt;
4199                 gen.command.u.cache64.BlockNo = gen.command.u.cache.BlockNo;
4200                 gen.command.u.cache64.DeviceNo = gen.command.u.cache.DeviceNo;
4201                 /* addresses */
4202                 if (ha->cache_feat & SCATTER_GATHER) {
4203                     gen.command.u.cache64.DestAddr = (u64)-1;
4204                     gen.command.u.cache64.sg_canz = 1;
4205                     gen.command.u.cache64.sg_lst[0].sg_ptr = paddr;
4206                     gen.command.u.cache64.sg_lst[0].sg_len = gen.data_len;
4207                     gen.command.u.cache64.sg_lst[1].sg_len = 0;
4208                 } else {
4209                     gen.command.u.cache64.DestAddr = paddr;
4210                     gen.command.u.cache64.sg_canz = 0;
4211                 }
4212             } else {
4213                 if (ha->cache_feat & SCATTER_GATHER) {
4214                     gen.command.u.cache.DestAddr = 0xffffffff;
4215                     gen.command.u.cache.sg_canz = 1;
4216                     gen.command.u.cache.sg_lst[0].sg_ptr = (u32)paddr;
4217                     gen.command.u.cache.sg_lst[0].sg_len = gen.data_len;
4218                     gen.command.u.cache.sg_lst[1].sg_len = 0;
4219                 } else {
4220                     gen.command.u.cache.DestAddr = paddr;
4221                     gen.command.u.cache.sg_canz = 0;
4222                 }
4223             }
4224         } else if (gen.command.Service == SCSIRAWSERVICE) {
4225             if (ha->raw_feat & GDT_64BIT) {
4226                 /* copy elements from 32-bit IOCTL structure */
4227                 char cmd[16];
4228                 gen.command.u.raw64.sense_len = gen.command.u.raw.sense_len;
4229                 gen.command.u.raw64.bus = gen.command.u.raw.bus;
4230                 gen.command.u.raw64.lun = gen.command.u.raw.lun;
4231                 gen.command.u.raw64.target = gen.command.u.raw.target;
4232                 memcpy(cmd, gen.command.u.raw.cmd, 16);
4233                 memcpy(gen.command.u.raw64.cmd, cmd, 16);
4234                 gen.command.u.raw64.clen = gen.command.u.raw.clen;
4235                 gen.command.u.raw64.sdlen = gen.command.u.raw.sdlen;
4236                 gen.command.u.raw64.direction = gen.command.u.raw.direction;
4237                 /* addresses */
4238                 if (ha->raw_feat & SCATTER_GATHER) {
4239                     gen.command.u.raw64.sdata = (u64)-1;
4240                     gen.command.u.raw64.sg_ranz = 1;
4241                     gen.command.u.raw64.sg_lst[0].sg_ptr = paddr;
4242                     gen.command.u.raw64.sg_lst[0].sg_len = gen.data_len;
4243                     gen.command.u.raw64.sg_lst[1].sg_len = 0;
4244                 } else {
4245                     gen.command.u.raw64.sdata = paddr;
4246                     gen.command.u.raw64.sg_ranz = 0;
4247                 }
4248                 gen.command.u.raw64.sense_data = paddr + gen.data_len;
4249             } else {
4250                 if (ha->raw_feat & SCATTER_GATHER) {
4251                     gen.command.u.raw.sdata = 0xffffffff;
4252                     gen.command.u.raw.sg_ranz = 1;
4253                     gen.command.u.raw.sg_lst[0].sg_ptr = (u32)paddr;
4254                     gen.command.u.raw.sg_lst[0].sg_len = gen.data_len;
4255                     gen.command.u.raw.sg_lst[1].sg_len = 0;
4256                 } else {
4257                     gen.command.u.raw.sdata = paddr;
4258                     gen.command.u.raw.sg_ranz = 0;
4259                 }
4260                 gen.command.u.raw.sense_data = (u32)paddr + gen.data_len;
4261             }
4262         } else {
4263             gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
4264             return -EFAULT;
4265         }
4266     }
4267
4268     rval = __gdth_execute(ha->sdev, &gen.command, cmnd, gen.timeout, &gen.info);
4269     if (rval < 0) {
4270         gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
4271         return rval;
4272     }
4273     gen.status = rval;
4274
4275     if (copy_to_user(arg + sizeof(gdth_ioctl_general), buf,
4276                      gen.data_len + gen.sense_len)) {
4277         gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
4278         return -EFAULT;
4279     }
4280     if (copy_to_user(arg, &gen,
4281         sizeof(gdth_ioctl_general) - sizeof(gdth_cmd_str))) {
4282         gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
4283         return -EFAULT;
4284     }
4285     gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
4286     return 0;
4287 }
4288
4289 static int ioc_hdrlist(void __user *arg, char *cmnd)
4290 {
4291     gdth_ioctl_rescan *rsc;
4292     gdth_cmd_str *cmd;
4293     gdth_ha_str *ha;
4294     u8 i;
4295     int rc = -ENOMEM;
4296     u32 cluster_type = 0;
4297
4298     rsc = kmalloc(sizeof(*rsc), GFP_KERNEL);
4299     cmd = kmalloc(sizeof(*cmd), GFP_KERNEL);
4300     if (!rsc || !cmd)
4301         goto free_fail;
4302
4303     if (copy_from_user(rsc, arg, sizeof(gdth_ioctl_rescan)) ||
4304         (NULL == (ha = gdth_find_ha(rsc->ionode)))) {
4305         rc = -EFAULT;
4306         goto free_fail;
4307     }
4308     memset(cmd, 0, sizeof(gdth_cmd_str));
4309
4310     for (i = 0; i < MAX_HDRIVES; ++i) {
4311         if (!ha->hdr[i].present) {
4312             rsc->hdr_list[i].bus = 0xff;
4313             continue;
4314         }
4315         rsc->hdr_list[i].bus = ha->virt_bus;
4316         rsc->hdr_list[i].target = i;
4317         rsc->hdr_list[i].lun = 0;
4318         rsc->hdr_list[i].cluster_type = ha->hdr[i].cluster_type;
4319         if (ha->hdr[i].cluster_type & CLUSTER_DRIVE) {
4320             cmd->Service = CACHESERVICE;
4321             cmd->OpCode = GDT_CLUST_INFO;
4322             if (ha->cache_feat & GDT_64BIT)
4323                 cmd->u.cache64.DeviceNo = i;
4324             else
4325                 cmd->u.cache.DeviceNo = i;
4326             if (__gdth_execute(ha->sdev, cmd, cmnd, 30, &cluster_type) == S_OK)
4327                 rsc->hdr_list[i].cluster_type = cluster_type;
4328         }
4329     }
4330
4331     if (copy_to_user(arg, rsc, sizeof(gdth_ioctl_rescan)))
4332         rc = -EFAULT;
4333     else
4334         rc = 0;
4335
4336 free_fail:
4337     kfree(rsc);
4338     kfree(cmd);
4339     return rc;
4340 }
4341
4342 static int ioc_rescan(void __user *arg, char *cmnd)
4343 {
4344     gdth_ioctl_rescan *rsc;
4345     gdth_cmd_str *cmd;
4346     u16 i, status, hdr_cnt;
4347     u32 info;
4348     int cyls, hds, secs;
4349     int rc = -ENOMEM;
4350     unsigned long flags;
4351     gdth_ha_str *ha;
4352
4353     rsc = kmalloc(sizeof(*rsc), GFP_KERNEL);
4354     cmd = kmalloc(sizeof(*cmd), GFP_KERNEL);
4355     if (!cmd || !rsc)
4356         goto free_fail;
4357
4358     if (copy_from_user(rsc, arg, sizeof(gdth_ioctl_rescan)) ||
4359         (NULL == (ha = gdth_find_ha(rsc->ionode)))) {
4360         rc = -EFAULT;
4361         goto free_fail;
4362     }
4363     memset(cmd, 0, sizeof(gdth_cmd_str));
4364
4365     if (rsc->flag == 0) {
4366         /* old method: re-init. cache service */
4367         cmd->Service = CACHESERVICE;
4368         if (ha->cache_feat & GDT_64BIT) {
4369             cmd->OpCode = GDT_X_INIT_HOST;
4370             cmd->u.cache64.DeviceNo = LINUX_OS;
4371         } else {
4372             cmd->OpCode = GDT_INIT;
4373             cmd->u.cache.DeviceNo = LINUX_OS;
4374         }
4375
4376         status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
4377         i = 0;
4378         hdr_cnt = (status == S_OK ? (u16)info : 0);
4379     } else {
4380         i = rsc->hdr_no;
4381         hdr_cnt = i + 1;
4382     }
4383
4384     for (; i < hdr_cnt && i < MAX_HDRIVES; ++i) {
4385         cmd->Service = CACHESERVICE;
4386         cmd->OpCode = GDT_INFO;
4387         if (ha->cache_feat & GDT_64BIT)
4388             cmd->u.cache64.DeviceNo = i;
4389         else
4390             cmd->u.cache.DeviceNo = i;
4391
4392         status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
4393
4394         spin_lock_irqsave(&ha->smp_lock, flags);
4395         rsc->hdr_list[i].bus = ha->virt_bus;
4396         rsc->hdr_list[i].target = i;
4397         rsc->hdr_list[i].lun = 0;
4398         if (status != S_OK) {
4399             ha->hdr[i].present = FALSE;
4400         } else {
4401             ha->hdr[i].present = TRUE;
4402             ha->hdr[i].size = info;
4403             /* evaluate mapping */
4404             ha->hdr[i].size &= ~SECS32;
4405             gdth_eval_mapping(ha->hdr[i].size,&cyls,&hds,&secs);
4406             ha->hdr[i].heads = hds;
4407             ha->hdr[i].secs = secs;
4408             /* round size */
4409             ha->hdr[i].size = cyls * hds * secs;
4410         }
4411         spin_unlock_irqrestore(&ha->smp_lock, flags);
4412         if (status != S_OK)
4413             continue;
4414
4415         /* extended info, if GDT_64BIT, for drives > 2 TB */
4416         /* but we need ha->info2, not yet stored in scp->SCp */
4417
4418         /* devtype, cluster info, R/W attribs */
4419         cmd->Service = CACHESERVICE;
4420         cmd->OpCode = GDT_DEVTYPE;
4421         if (ha->cache_feat & GDT_64BIT)
4422             cmd->u.cache64.DeviceNo = i;
4423         else
4424             cmd->u.cache.DeviceNo = i;
4425
4426         status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
4427
4428         spin_lock_irqsave(&ha->smp_lock, flags);
4429         ha->hdr[i].devtype = (status == S_OK ? (u16)info : 0);
4430         spin_unlock_irqrestore(&ha->smp_lock, flags);
4431
4432         cmd->Service = CACHESERVICE;
4433         cmd->OpCode = GDT_CLUST_INFO;
4434         if (ha->cache_feat & GDT_64BIT)
4435             cmd->u.cache64.DeviceNo = i;
4436         else
4437             cmd->u.cache.DeviceNo = i;
4438
4439         status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
4440
4441         spin_lock_irqsave(&ha->smp_lock, flags);
4442         ha->hdr[i].cluster_type =
4443             ((status == S_OK && !shared_access) ? (u16)info : 0);
4444         spin_unlock_irqrestore(&ha->smp_lock, flags);
4445         rsc->hdr_list[i].cluster_type = ha->hdr[i].cluster_type;
4446
4447         cmd->Service = CACHESERVICE;
4448         cmd->OpCode = GDT_RW_ATTRIBS;
4449         if (ha->cache_feat & GDT_64BIT)
4450             cmd->u.cache64.DeviceNo = i;
4451         else
4452             cmd->u.cache.DeviceNo = i;
4453
4454         status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
4455
4456         spin_lock_irqsave(&ha->smp_lock, flags);
4457         ha->hdr[i].rw_attribs = (status == S_OK ? (u16)info : 0);
4458         spin_unlock_irqrestore(&ha->smp_lock, flags);
4459     }
4460
4461     if (copy_to_user(arg, rsc, sizeof(gdth_ioctl_rescan)))
4462         rc = -EFAULT;
4463     else
4464         rc = 0;
4465
4466 free_fail:
4467     kfree(rsc);
4468     kfree(cmd);
4469     return rc;
4470 }
4471
4472 static int gdth_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
4473 {
4474     gdth_ha_str *ha;
4475     Scsi_Cmnd *scp;
4476     unsigned long flags;
4477     char cmnd[MAX_COMMAND_SIZE];
4478     void __user *argp = (void __user *)arg;
4479
4480     memset(cmnd, 0xff, 12);
4481
4482     TRACE(("gdth_ioctl() cmd 0x%x\n", cmd));
4483
4484     switch (cmd) {
4485       case GDTIOCTL_CTRCNT:
4486       {
4487         int cnt = gdth_ctr_count;
4488         if (put_user(cnt, (int __user *)argp))
4489                 return -EFAULT;
4490         break;
4491       }
4492
4493       case GDTIOCTL_DRVERS:
4494       {
4495         int ver = (GDTH_VERSION<<8) | GDTH_SUBVERSION;
4496         if (put_user(ver, (int __user *)argp))
4497                 return -EFAULT;
4498         break;
4499       }
4500
4501       case GDTIOCTL_OSVERS:
4502       {
4503         gdth_ioctl_osvers osv;
4504
4505         osv.version = (u8)(LINUX_VERSION_CODE >> 16);
4506         osv.subversion = (u8)(LINUX_VERSION_CODE >> 8);
4507         osv.revision = (u16)(LINUX_VERSION_CODE & 0xff);
4508         if (copy_to_user(argp, &osv, sizeof(gdth_ioctl_osvers)))
4509                 return -EFAULT;
4510         break;
4511       }
4512
4513       case GDTIOCTL_CTRTYPE:
4514       {
4515         gdth_ioctl_ctrtype ctrt;
4516
4517         if (copy_from_user(&ctrt, argp, sizeof(gdth_ioctl_ctrtype)) ||
4518             (NULL == (ha = gdth_find_ha(ctrt.ionode))))
4519             return -EFAULT;
4520
4521         if (ha->type == GDT_ISA || ha->type == GDT_EISA) {
4522             ctrt.type = (u8)((ha->stype>>20) - 0x10);
4523         } else {
4524             if (ha->type != GDT_PCIMPR) {
4525                 ctrt.type = (u8)((ha->stype<<4) + 6);
4526             } else {
4527                 ctrt.type =
4528                     (ha->oem_id == OEM_ID_INTEL ? 0xfd : 0xfe);
4529                 if (ha->stype >= 0x300)
4530                     ctrt.ext_type = 0x6000 | ha->pdev->subsystem_device;
4531                 else
4532                     ctrt.ext_type = 0x6000 | ha->stype;
4533             }
4534             ctrt.device_id = ha->pdev->device;
4535             ctrt.sub_device_id = ha->pdev->subsystem_device;
4536         }
4537         ctrt.info = ha->brd_phys;
4538         ctrt.oem_id = ha->oem_id;
4539         if (copy_to_user(argp, &ctrt, sizeof(gdth_ioctl_ctrtype)))
4540             return -EFAULT;
4541         break;
4542       }
4543
4544       case GDTIOCTL_GENERAL:
4545         return ioc_general(argp, cmnd);
4546
4547       case GDTIOCTL_EVENT:
4548         return ioc_event(argp);
4549
4550       case GDTIOCTL_LOCKDRV:
4551         return ioc_lockdrv(argp);
4552
4553       case GDTIOCTL_LOCKCHN:
4554       {
4555         gdth_ioctl_lockchn lchn;
4556         u8 i, j;
4557
4558         if (copy_from_user(&lchn, argp, sizeof(gdth_ioctl_lockchn)) ||
4559             (NULL == (ha = gdth_find_ha(lchn.ionode))))
4560             return -EFAULT;
4561
4562         i = lchn.channel;
4563         if (i < ha->bus_cnt) {
4564             if (lchn.lock) {
4565                 spin_lock_irqsave(&ha->smp_lock, flags);
4566                 ha->raw[i].lock = 1;
4567                 spin_unlock_irqrestore(&ha->smp_lock, flags);
4568                 for (j = 0; j < ha->tid_cnt; ++j)
4569                     gdth_wait_completion(ha, i, j);
4570             } else {
4571                 spin_lock_irqsave(&ha->smp_lock, flags);
4572                 ha->raw[i].lock = 0;
4573                 spin_unlock_irqrestore(&ha->smp_lock, flags);
4574                 for (j = 0; j < ha->tid_cnt; ++j)
4575                     gdth_next(ha);
4576             }
4577         }
4578         break;
4579       }
4580
4581       case GDTIOCTL_RESCAN:
4582         return ioc_rescan(argp, cmnd);
4583
4584       case GDTIOCTL_HDRLIST:
4585         return ioc_hdrlist(argp, cmnd);
4586
4587       case GDTIOCTL_RESET_BUS:
4588       {
4589         gdth_ioctl_reset res;
4590         int rval;
4591
4592         if (copy_from_user(&res, argp, sizeof(gdth_ioctl_reset)) ||
4593             (NULL == (ha = gdth_find_ha(res.ionode))))
4594             return -EFAULT;
4595
4596         scp  = kzalloc(sizeof(*scp), GFP_KERNEL);
4597         if (!scp)
4598             return -ENOMEM;
4599         scp->device = ha->sdev;
4600         scp->cmd_len = 12;
4601         scp->device->channel = res.number;
4602         rval = gdth_eh_bus_reset(scp);
4603         res.status = (rval == SUCCESS ? S_OK : S_GENERR);
4604         kfree(scp);
4605
4606         if (copy_to_user(argp, &res, sizeof(gdth_ioctl_reset)))
4607             return -EFAULT;
4608         break;
4609       }
4610
4611       case GDTIOCTL_RESET_DRV:
4612         return ioc_resetdrv(argp, cmnd);
4613
4614       default:
4615         break;
4616     }
4617     return 0;
4618 }
4619
4620 static long gdth_unlocked_ioctl(struct file *file, unsigned int cmd,
4621                                 unsigned long arg)
4622 {
4623         int ret;
4624
4625         mutex_lock(&gdth_mutex);
4626         ret = gdth_ioctl(file, cmd, arg);
4627         mutex_unlock(&gdth_mutex);
4628
4629         return ret;
4630 }
4631
4632 /* flush routine */
4633 static void gdth_flush(gdth_ha_str *ha)
4634 {
4635     int             i;
4636     gdth_cmd_str    gdtcmd;
4637     char            cmnd[MAX_COMMAND_SIZE];
4638     memset(cmnd, 0xff, MAX_COMMAND_SIZE);
4639
4640     TRACE2(("gdth_flush() hanum %d\n", ha->hanum));
4641
4642     for (i = 0; i < MAX_HDRIVES; ++i) {
4643         if (ha->hdr[i].present) {
4644             gdtcmd.BoardNode = LOCALBOARD;
4645             gdtcmd.Service = CACHESERVICE;
4646             gdtcmd.OpCode = GDT_FLUSH;
4647             if (ha->cache_feat & GDT_64BIT) {
4648                 gdtcmd.u.cache64.DeviceNo = i;
4649                 gdtcmd.u.cache64.BlockNo = 1;
4650                 gdtcmd.u.cache64.sg_canz = 0;
4651             } else {
4652                 gdtcmd.u.cache.DeviceNo = i;
4653                 gdtcmd.u.cache.BlockNo = 1;
4654                 gdtcmd.u.cache.sg_canz = 0;
4655             }
4656             TRACE2(("gdth_flush(): flush ha %d drive %d\n", ha->hanum, i));
4657
4658             gdth_execute(ha->shost, &gdtcmd, cmnd, 30, NULL);
4659         }
4660     }
4661 }
4662
4663 /* configure lun */
4664 static int gdth_slave_configure(struct scsi_device *sdev)
4665 {
4666     scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
4667     sdev->skip_ms_page_3f = 1;
4668     sdev->skip_ms_page_8 = 1;
4669     return 0;
4670 }
4671
4672 static struct scsi_host_template gdth_template = {
4673         .name                   = "GDT SCSI Disk Array Controller",
4674         .info                   = gdth_info,
4675         .queuecommand           = gdth_queuecommand,
4676         .eh_bus_reset_handler   = gdth_eh_bus_reset,
4677         .slave_configure        = gdth_slave_configure,
4678         .bios_param             = gdth_bios_param,
4679         .show_info              = gdth_show_info,
4680         .write_info             = gdth_set_info,
4681         .eh_timed_out           = gdth_timed_out,
4682         .proc_name              = "gdth",
4683         .can_queue              = GDTH_MAXCMDS,
4684         .this_id                = -1,
4685         .sg_tablesize           = GDTH_MAXSG,
4686         .cmd_per_lun            = GDTH_MAXC_P_L,
4687         .unchecked_isa_dma      = 1,
4688         .use_clustering         = ENABLE_CLUSTERING,
4689         .no_write_same          = 1,
4690 };
4691
4692 #ifdef CONFIG_ISA
4693 static int __init gdth_isa_probe_one(u32 isa_bios)
4694 {
4695         struct Scsi_Host *shp;
4696         gdth_ha_str *ha;
4697         dma_addr_t scratch_dma_handle = 0;
4698         int error, i;
4699
4700         if (!gdth_search_isa(isa_bios))
4701                 return -ENXIO;
4702
4703         shp = scsi_host_alloc(&gdth_template, sizeof(gdth_ha_str));
4704         if (!shp)
4705                 return -ENOMEM;
4706         ha = shost_priv(shp);
4707
4708         error = -ENODEV;
4709         if (!gdth_init_isa(isa_bios,ha))
4710                 goto out_host_put;
4711
4712         /* controller found and initialized */
4713         printk("Configuring GDT-ISA HA at BIOS 0x%05X IRQ %u DRQ %u\n",
4714                 isa_bios, ha->irq, ha->drq);
4715
4716         error = request_irq(ha->irq, gdth_interrupt, IRQF_DISABLED, "gdth", ha);
4717         if (error) {
4718                 printk("GDT-ISA: Unable to allocate IRQ\n");
4719                 goto out_host_put;
4720         }
4721
4722         error = request_dma(ha->drq, "gdth");
4723         if (error) {
4724                 printk("GDT-ISA: Unable to allocate DMA channel\n");
4725                 goto out_free_irq;
4726         }
4727
4728         set_dma_mode(ha->drq,DMA_MODE_CASCADE);
4729         enable_dma(ha->drq);
4730         shp->unchecked_isa_dma = 1;
4731         shp->irq = ha->irq;
4732         shp->dma_channel = ha->drq;
4733
4734         ha->hanum = gdth_ctr_count++;
4735         ha->shost = shp;
4736
4737         ha->pccb = &ha->cmdext;
4738         ha->ccb_phys = 0L;
4739         ha->pdev = NULL;
4740
4741         error = -ENOMEM;
4742
4743         ha->pscratch = pci_alloc_consistent(ha->pdev, GDTH_SCRATCH,
4744                                                 &scratch_dma_handle);
4745         if (!ha->pscratch)
4746                 goto out_dec_counters;
4747         ha->scratch_phys = scratch_dma_handle;
4748
4749         ha->pmsg = pci_alloc_consistent(ha->pdev, sizeof(gdth_msg_str),
4750                                                 &scratch_dma_handle);
4751         if (!ha->pmsg)
4752                 goto out_free_pscratch;
4753         ha->msg_phys = scratch_dma_handle;
4754
4755 #ifdef INT_COAL
4756         ha->coal_stat = pci_alloc_consistent(ha->pdev,
4757                                 sizeof(gdth_coal_status) * MAXOFFSETS,
4758                                 &scratch_dma_handle);
4759         if (!ha->coal_stat)
4760                 goto out_free_pmsg;
4761         ha->coal_stat_phys = scratch_dma_handle;
4762 #endif
4763
4764         ha->scratch_busy = FALSE;
4765         ha->req_first = NULL;
4766         ha->tid_cnt = MAX_HDRIVES;
4767         if (max_ids > 0 && max_ids < ha->tid_cnt)
4768                 ha->tid_cnt = max_ids;
4769         for (i = 0; i < GDTH_MAXCMDS; ++i)
4770                 ha->cmd_tab[i].cmnd = UNUSED_CMND;
4771         ha->scan_mode = rescan ? 0x10 : 0;
4772
4773         error = -ENODEV;
4774         if (!gdth_search_drives(ha)) {
4775                 printk("GDT-ISA: Error during device scan\n");
4776                 goto out_free_coal_stat;
4777         }
4778
4779         if (hdr_channel < 0 || hdr_channel > ha->bus_cnt)
4780                 hdr_channel = ha->bus_cnt;
4781         ha->virt_bus = hdr_channel;
4782
4783         if (ha->cache_feat & ha->raw_feat & ha->screen_feat & GDT_64BIT)
4784                 shp->max_cmd_len = 16;
4785
4786         shp->max_id      = ha->tid_cnt;
4787         shp->max_lun     = MAXLUN;
4788         shp->max_channel = ha->bus_cnt;
4789
4790         spin_lock_init(&ha->smp_lock);
4791         gdth_enable_int(ha);
4792
4793         error = scsi_add_host(shp, NULL);
4794         if (error)
4795                 goto out_free_coal_stat;
4796         list_add_tail(&ha->list, &gdth_instances);
4797         gdth_timer_init();
4798
4799         scsi_scan_host(shp);
4800
4801         return 0;
4802
4803  out_free_coal_stat:
4804 #ifdef INT_COAL
4805         pci_free_consistent(ha->pdev, sizeof(gdth_coal_status) * MAXOFFSETS,
4806                                 ha->coal_stat, ha->coal_stat_phys);
4807  out_free_pmsg:
4808 #endif
4809         pci_free_consistent(ha->pdev, sizeof(gdth_msg_str),
4810                                 ha->pmsg, ha->msg_phys);
4811  out_free_pscratch:
4812         pci_free_consistent(ha->pdev, GDTH_SCRATCH,
4813                                 ha->pscratch, ha->scratch_phys);
4814  out_dec_counters:
4815         gdth_ctr_count--;
4816  out_free_irq:
4817         free_irq(ha->irq, ha);
4818  out_host_put:
4819         scsi_host_put(shp);
4820         return error;
4821 }
4822 #endif /* CONFIG_ISA */
4823
4824 #ifdef CONFIG_EISA
4825 static int __init gdth_eisa_probe_one(u16 eisa_slot)
4826 {
4827         struct Scsi_Host *shp;
4828         gdth_ha_str *ha;
4829         dma_addr_t scratch_dma_handle = 0;
4830         int error, i;
4831
4832         if (!gdth_search_eisa(eisa_slot))
4833                 return -ENXIO;
4834
4835         shp = scsi_host_alloc(&gdth_template, sizeof(gdth_ha_str));
4836         if (!shp)
4837                 return -ENOMEM;
4838         ha = shost_priv(shp);
4839
4840         error = -ENODEV;
4841         if (!gdth_init_eisa(eisa_slot,ha))
4842                 goto out_host_put;
4843
4844         /* controller found and initialized */
4845         printk("Configuring GDT-EISA HA at Slot %d IRQ %u\n",
4846                 eisa_slot >> 12, ha->irq);
4847
4848         error = request_irq(ha->irq, gdth_interrupt, IRQF_DISABLED, "gdth", ha);
4849         if (error) {
4850                 printk("GDT-EISA: Unable to allocate IRQ\n");
4851                 goto out_host_put;
4852         }
4853
4854         shp->unchecked_isa_dma = 0;
4855         shp->irq = ha->irq;
4856         shp->dma_channel = 0xff;
4857
4858         ha->hanum = gdth_ctr_count++;
4859         ha->shost = shp;
4860
4861         TRACE2(("EISA detect Bus 0: hanum %d\n", ha->hanum));
4862
4863         ha->pccb = &ha->cmdext;
4864         ha->ccb_phys = 0L;
4865
4866         error = -ENOMEM;
4867
4868         ha->pdev = NULL;
4869         ha->pscratch = pci_alloc_consistent(ha->pdev, GDTH_SCRATCH,
4870                                                 &scratch_dma_handle);
4871         if (!ha->pscratch)
4872                 goto out_free_irq;
4873         ha->scratch_phys = scratch_dma_handle;
4874
4875         ha->pmsg = pci_alloc_consistent(ha->pdev, sizeof(gdth_msg_str),
4876                                                 &scratch_dma_handle);
4877         if (!ha->pmsg)
4878                 goto out_free_pscratch;
4879         ha->msg_phys = scratch_dma_handle;
4880
4881 #ifdef INT_COAL
4882         ha->coal_stat = pci_alloc_consistent(ha->pdev,
4883                         sizeof(gdth_coal_status) * MAXOFFSETS,
4884                         &scratch_dma_handle);
4885         if (!ha->coal_stat)
4886                 goto out_free_pmsg;
4887         ha->coal_stat_phys = scratch_dma_handle;
4888 #endif
4889
4890         ha->ccb_phys = pci_map_single(ha->pdev,ha->pccb,
4891                         sizeof(gdth_cmd_str), PCI_DMA_BIDIRECTIONAL);
4892         if (!ha->ccb_phys)
4893                 goto out_free_coal_stat;
4894
4895         ha->scratch_busy = FALSE;
4896         ha->req_first = NULL;
4897         ha->tid_cnt = MAX_HDRIVES;
4898         if (max_ids > 0 && max_ids < ha->tid_cnt)
4899                 ha->tid_cnt = max_ids;
4900         for (i = 0; i < GDTH_MAXCMDS; ++i)
4901                 ha->cmd_tab[i].cmnd = UNUSED_CMND;
4902         ha->scan_mode = rescan ? 0x10 : 0;
4903
4904         if (!gdth_search_drives(ha)) {
4905                 printk("GDT-EISA: Error during device scan\n");
4906                 error = -ENODEV;
4907                 goto out_free_ccb_phys;
4908         }
4909
4910         if (hdr_channel < 0 || hdr_channel > ha->bus_cnt)
4911                 hdr_channel = ha->bus_cnt;
4912         ha->virt_bus = hdr_channel;
4913
4914         if (ha->cache_feat & ha->raw_feat & ha->screen_feat & GDT_64BIT)
4915                 shp->max_cmd_len = 16;
4916
4917         shp->max_id      = ha->tid_cnt;
4918         shp->max_lun     = MAXLUN;
4919         shp->max_channel = ha->bus_cnt;
4920
4921         spin_lock_init(&ha->smp_lock);
4922         gdth_enable_int(ha);
4923
4924         error = scsi_add_host(shp, NULL);
4925         if (error)
4926                 goto out_free_ccb_phys;
4927         list_add_tail(&ha->list, &gdth_instances);
4928         gdth_timer_init();
4929
4930         scsi_scan_host(shp);
4931
4932         return 0;
4933
4934  out_free_ccb_phys:
4935         pci_unmap_single(ha->pdev,ha->ccb_phys, sizeof(gdth_cmd_str),
4936                         PCI_DMA_BIDIRECTIONAL);
4937  out_free_coal_stat:
4938 #ifdef INT_COAL
4939         pci_free_consistent(ha->pdev, sizeof(gdth_coal_status) * MAXOFFSETS,
4940                                 ha->coal_stat, ha->coal_stat_phys);
4941  out_free_pmsg:
4942 #endif
4943         pci_free_consistent(ha->pdev, sizeof(gdth_msg_str),
4944                                 ha->pmsg, ha->msg_phys);
4945  out_free_pscratch:
4946         pci_free_consistent(ha->pdev, GDTH_SCRATCH,
4947                                 ha->pscratch, ha->scratch_phys);
4948  out_free_irq:
4949         free_irq(ha->irq, ha);
4950         gdth_ctr_count--;
4951  out_host_put:
4952         scsi_host_put(shp);
4953         return error;
4954 }
4955 #endif /* CONFIG_EISA */
4956
4957 #ifdef CONFIG_PCI
4958 static int gdth_pci_probe_one(gdth_pci_str *pcistr, gdth_ha_str **ha_out)
4959 {
4960         struct Scsi_Host *shp;
4961         gdth_ha_str *ha;
4962         dma_addr_t scratch_dma_handle = 0;
4963         int error, i;
4964         struct pci_dev *pdev = pcistr->pdev;
4965
4966         *ha_out = NULL;
4967
4968         shp = scsi_host_alloc(&gdth_template, sizeof(gdth_ha_str));
4969         if (!shp)
4970                 return -ENOMEM;
4971         ha = shost_priv(shp);
4972
4973         error = -ENODEV;
4974         if (!gdth_init_pci(pdev, pcistr, ha))
4975                 goto out_host_put;
4976
4977         /* controller found and initialized */
4978         printk("Configuring GDT-PCI HA at %d/%d IRQ %u\n",
4979                 pdev->bus->number,
4980                 PCI_SLOT(pdev->devfn),
4981                 ha->irq);
4982
4983         error = request_irq(ha->irq, gdth_interrupt,
4984                                 IRQF_DISABLED|IRQF_SHARED, "gdth", ha);
4985         if (error) {
4986                 printk("GDT-PCI: Unable to allocate IRQ\n");
4987                 goto out_host_put;
4988         }
4989
4990         shp->unchecked_isa_dma = 0;
4991         shp->irq = ha->irq;
4992         shp->dma_channel = 0xff;
4993
4994         ha->hanum = gdth_ctr_count++;
4995         ha->shost = shp;
4996
4997         ha->pccb = &ha->cmdext;
4998         ha->ccb_phys = 0L;
4999
5000         error = -ENOMEM;
5001
5002         ha->pscratch = pci_alloc_consistent(ha->pdev, GDTH_SCRATCH,
5003                                                 &scratch_dma_handle);
5004         if (!ha->pscratch)
5005                 goto out_free_irq;
5006         ha->scratch_phys = scratch_dma_handle;
5007
5008         ha->pmsg = pci_alloc_consistent(ha->pdev, sizeof(gdth_msg_str),
5009                                         &scratch_dma_handle);
5010         if (!ha->pmsg)
5011                 goto out_free_pscratch;
5012         ha->msg_phys = scratch_dma_handle;
5013
5014 #ifdef INT_COAL
5015         ha->coal_stat = pci_alloc_consistent(ha->pdev,
5016                         sizeof(gdth_coal_status) * MAXOFFSETS,
5017                         &scratch_dma_handle);
5018         if (!ha->coal_stat)
5019                 goto out_free_pmsg;
5020         ha->coal_stat_phys = scratch_dma_handle;
5021 #endif
5022
5023         ha->scratch_busy = FALSE;
5024         ha->req_first = NULL;
5025         ha->tid_cnt = pdev->device >= 0x200 ? MAXID : MAX_HDRIVES;
5026         if (max_ids > 0 && max_ids < ha->tid_cnt)
5027                 ha->tid_cnt = max_ids;
5028         for (i = 0; i < GDTH_MAXCMDS; ++i)
5029                 ha->cmd_tab[i].cmnd = UNUSED_CMND;
5030         ha->scan_mode = rescan ? 0x10 : 0;
5031
5032         error = -ENODEV;
5033         if (!gdth_search_drives(ha)) {
5034                 printk("GDT-PCI %d: Error during device scan\n", ha->hanum);
5035                 goto out_free_coal_stat;
5036         }
5037
5038         if (hdr_channel < 0 || hdr_channel > ha->bus_cnt)
5039                 hdr_channel = ha->bus_cnt;
5040         ha->virt_bus = hdr_channel;
5041
5042         /* 64-bit DMA only supported from FW >= x.43 */
5043         if (!(ha->cache_feat & ha->raw_feat & ha->screen_feat & GDT_64BIT) ||
5044             !ha->dma64_support) {
5045                 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
5046                         printk(KERN_WARNING "GDT-PCI %d: "
5047                                 "Unable to set 32-bit DMA\n", ha->hanum);
5048                                 goto out_free_coal_stat;
5049                 }
5050         } else {
5051                 shp->max_cmd_len = 16;
5052                 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
5053                         printk("GDT-PCI %d: 64-bit DMA enabled\n", ha->hanum);
5054                 } else if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
5055                         printk(KERN_WARNING "GDT-PCI %d: "
5056                                 "Unable to set 64/32-bit DMA\n", ha->hanum);
5057                         goto out_free_coal_stat;
5058                 }
5059         }
5060
5061         shp->max_id      = ha->tid_cnt;
5062         shp->max_lun     = MAXLUN;
5063         shp->max_channel = ha->bus_cnt;
5064
5065         spin_lock_init(&ha->smp_lock);
5066         gdth_enable_int(ha);
5067
5068         error = scsi_add_host(shp, &pdev->dev);
5069         if (error)
5070                 goto out_free_coal_stat;
5071         list_add_tail(&ha->list, &gdth_instances);
5072
5073         pci_set_drvdata(ha->pdev, ha);
5074         gdth_timer_init();
5075
5076         scsi_scan_host(shp);
5077
5078         *ha_out = ha;
5079
5080         return 0;
5081
5082  out_free_coal_stat:
5083 #ifdef INT_COAL
5084         pci_free_consistent(ha->pdev, sizeof(gdth_coal_status) * MAXOFFSETS,
5085                                 ha->coal_stat, ha->coal_stat_phys);
5086  out_free_pmsg:
5087 #endif
5088         pci_free_consistent(ha->pdev, sizeof(gdth_msg_str),
5089                                 ha->pmsg, ha->msg_phys);
5090  out_free_pscratch:
5091         pci_free_consistent(ha->pdev, GDTH_SCRATCH,
5092                                 ha->pscratch, ha->scratch_phys);
5093  out_free_irq:
5094         free_irq(ha->irq, ha);
5095         gdth_ctr_count--;
5096  out_host_put:
5097         scsi_host_put(shp);
5098         return error;
5099 }
5100 #endif /* CONFIG_PCI */
5101
5102 static void gdth_remove_one(gdth_ha_str *ha)
5103 {
5104         struct Scsi_Host *shp = ha->shost;
5105
5106         TRACE2(("gdth_remove_one()\n"));
5107
5108         scsi_remove_host(shp);
5109
5110         gdth_flush(ha);
5111
5112         if (ha->sdev) {
5113                 scsi_free_host_dev(ha->sdev);
5114                 ha->sdev = NULL;
5115         }
5116
5117         if (shp->irq)
5118                 free_irq(shp->irq,ha);
5119
5120 #ifdef CONFIG_ISA
5121         if (shp->dma_channel != 0xff)
5122                 free_dma(shp->dma_channel);
5123 #endif
5124 #ifdef INT_COAL
5125         if (ha->coal_stat)
5126                 pci_free_consistent(ha->pdev, sizeof(gdth_coal_status) *
5127                         MAXOFFSETS, ha->coal_stat, ha->coal_stat_phys);
5128 #endif
5129         if (ha->pscratch)
5130                 pci_free_consistent(ha->pdev, GDTH_SCRATCH,
5131                         ha->pscratch, ha->scratch_phys);
5132         if (ha->pmsg)
5133                 pci_free_consistent(ha->pdev, sizeof(gdth_msg_str),
5134                         ha->pmsg, ha->msg_phys);
5135         if (ha->ccb_phys)
5136                 pci_unmap_single(ha->pdev,ha->ccb_phys,
5137                         sizeof(gdth_cmd_str),PCI_DMA_BIDIRECTIONAL);
5138
5139         scsi_host_put(shp);
5140 }
5141
5142 static int gdth_halt(struct notifier_block *nb, unsigned long event, void *buf)
5143 {
5144         gdth_ha_str *ha;
5145
5146         TRACE2(("gdth_halt() event %d\n", (int)event));
5147         if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF)
5148                 return NOTIFY_DONE;
5149
5150         list_for_each_entry(ha, &gdth_instances, list)
5151                 gdth_flush(ha);
5152
5153         return NOTIFY_OK;
5154 }
5155
5156 static struct notifier_block gdth_notifier = {
5157     gdth_halt, NULL, 0
5158 };
5159
5160 static int __init gdth_init(void)
5161 {
5162         if (disable) {
5163                 printk("GDT-HA: Controller driver disabled from"
5164                        " command line !\n");
5165                 return 0;
5166         }
5167
5168         printk("GDT-HA: Storage RAID Controller Driver. Version: %s\n",
5169                GDTH_VERSION_STR);
5170
5171         /* initializations */
5172         gdth_polling = TRUE;
5173         gdth_clear_events();
5174         init_timer(&gdth_timer);
5175
5176         /* As default we do not probe for EISA or ISA controllers */
5177         if (probe_eisa_isa) {
5178                 /* scanning for controllers, at first: ISA controller */
5179 #ifdef CONFIG_ISA
5180                 u32 isa_bios;
5181                 for (isa_bios = 0xc8000UL; isa_bios <= 0xd8000UL;
5182                                 isa_bios += 0x8000UL)
5183                         gdth_isa_probe_one(isa_bios);
5184 #endif
5185 #ifdef CONFIG_EISA
5186                 {
5187                         u16 eisa_slot;
5188                         for (eisa_slot = 0x1000; eisa_slot <= 0x8000;
5189                                                  eisa_slot += 0x1000)
5190                                 gdth_eisa_probe_one(eisa_slot);
5191                 }
5192 #endif
5193         }
5194
5195 #ifdef CONFIG_PCI
5196         /* scanning for PCI controllers */
5197         if (pci_register_driver(&gdth_pci_driver)) {
5198                 gdth_ha_str *ha;
5199
5200                 list_for_each_entry(ha, &gdth_instances, list)
5201                         gdth_remove_one(ha);
5202                 return -ENODEV;
5203         }
5204 #endif /* CONFIG_PCI */
5205
5206         TRACE2(("gdth_detect() %d controller detected\n", gdth_ctr_count));
5207
5208         major = register_chrdev(0,"gdth", &gdth_fops);
5209         register_reboot_notifier(&gdth_notifier);
5210         gdth_polling = FALSE;
5211         return 0;
5212 }
5213
5214 static void __exit gdth_exit(void)
5215 {
5216         gdth_ha_str *ha;
5217
5218         unregister_chrdev(major, "gdth");
5219         unregister_reboot_notifier(&gdth_notifier);
5220
5221 #ifdef GDTH_STATISTICS
5222         del_timer_sync(&gdth_timer);
5223 #endif
5224
5225 #ifdef CONFIG_PCI
5226         pci_unregister_driver(&gdth_pci_driver);
5227 #endif
5228
5229         list_for_each_entry(ha, &gdth_instances, list)
5230                 gdth_remove_one(ha);
5231 }
5232
5233 module_init(gdth_init);
5234 module_exit(gdth_exit);
5235
5236 #ifndef MODULE
5237 __setup("gdth=", option_setup);
5238 #endif