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
 124 #ifdef GDTH_RTC
 125 #include <linux/mc146818rtc.h>
 126 #endif
 127 #include <linux/reboot.h>
 128
 129 #include <asm/dma.h>
 130 #include <asm/system.h>
 131 #include <asm/io.h>
 132 #include <asm/uaccess.h>
 133 #include <linux/spinlock.h>
 134 #include <linux/blkdev.h>
 135 #include <linux/scatterlist.h>
 136
 137 #include "scsi.h"
 138 #include <scsi/scsi_host.h>
 139 #include "gdth.h"
 140
 141 static void gdth_delay(int milliseconds);
 142 static void gdth_eval_mapping(ulong32 size, ulong32 *cyls, int *heads, int *secs);
 143 static irqreturn_t gdth_interrupt(int irq, void *dev_id);
 144 static irqreturn_t __gdth_interrupt(gdth_ha_str *ha,
 145                                     int gdth_from_wait, int* pIndex);
 146 static int gdth_sync_event(gdth_ha_str *ha, int service, unchar index,
 147                                                                Scsi_Cmnd *scp);
 148 static int gdth_async_event(gdth_ha_str *ha);
 149 static void gdth_log_event(gdth_evt_data *dvr, char *buffer);
 150
 151 static void gdth_putq(gdth_ha_str *ha, Scsi_Cmnd *scp, unchar priority);
 152 static void gdth_next(gdth_ha_str *ha);
 153 static int gdth_fill_raw_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, unchar b);
 154 static int gdth_special_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp);
 155 static gdth_evt_str *gdth_store_event(gdth_ha_str *ha, ushort source,
 156                                       ushort idx, gdth_evt_data *evt);
 157 static int gdth_read_event(gdth_ha_str *ha, int handle, gdth_evt_str *estr);
 158 static void gdth_readapp_event(gdth_ha_str *ha, unchar application,
 159                                gdth_evt_str *estr);
 160 static void gdth_clear_events(void);
 161
 162 static void gdth_copy_internal_data(gdth_ha_str *ha, Scsi_Cmnd *scp,
 163                                     char *buffer, ushort count);
 164 static int gdth_internal_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp);
 165 static int gdth_fill_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, ushort hdrive);
 166
 167 static void gdth_enable_int(gdth_ha_str *ha);
 168 static int gdth_test_busy(gdth_ha_str *ha);
 169 static int gdth_get_cmd_index(gdth_ha_str *ha);
 170 static void gdth_release_event(gdth_ha_str *ha);
 171 static int gdth_wait(gdth_ha_str *ha, int index,ulong32 time);
 172 static int gdth_internal_cmd(gdth_ha_str *ha, unchar service, ushort opcode,
 173                                              ulong32 p1, ulong64 p2,ulong64 p3);
 174 static int gdth_search_drives(gdth_ha_str *ha);
 175 static int gdth_analyse_hdrive(gdth_ha_str *ha, ushort hdrive);
 176
 177 static const char *gdth_ctr_name(gdth_ha_str *ha);
 178
 179 static int gdth_open(struct inode *inode, struct file *filep);
 180 static int gdth_close(struct inode *inode, struct file *filep);
 181 static int gdth_ioctl(struct inode *inode, struct file *filep,
 182                       unsigned int cmd, unsigned long arg);
 183
 184 static void gdth_flush(gdth_ha_str *ha);
 185 static int gdth_queuecommand(Scsi_Cmnd *scp,void (*done)(Scsi_Cmnd *));
 186 static int __gdth_queuecommand(gdth_ha_str *ha, struct scsi_cmnd *scp,
 187                                 struct gdth_cmndinfo *cmndinfo);
 188 static void gdth_scsi_done(struct scsi_cmnd *scp);
 189
 190 #ifdef DEBUG_GDTH
 191 static unchar   DebugState = DEBUG_GDTH;
 192
 193 #ifdef __SERIAL__
 194 #define MAX_SERBUF 160
 195 static void ser_init(void);
 196 static void ser_puts(char *str);
 197 static void ser_putc(char c);
 198 static int  ser_printk(const char *fmt, ...);
 199 static char strbuf[MAX_SERBUF+1];
 200 #ifdef __COM2__
 201 #define COM_BASE 0x2f8
 202 #else
 203 #define COM_BASE 0x3f8
 204 #endif
 205 static void ser_init()
 206 {
 207     unsigned port=COM_BASE;
 208
 209     outb(0x80,port+3);
 210     outb(0,port+1);
 211     /* 19200 Baud, if 9600: outb(12,port) */
 212     outb(6, port);
 213     outb(3,port+3);
 214     outb(0,port+1);
 215     /*
 216     ser_putc('I');
 217     ser_putc(' ');
 218     */
 219 }
 220
 221 static void ser_puts(char *str)
 222 {
 223     char *ptr;
 224
 225     ser_init();
 226     for (ptr=str;*ptr;++ptr)
 227         ser_putc(*ptr);
 228 }
 229
 230 static void ser_putc(char c)
 231 {
 232     unsigned port=COM_BASE;
 233
 234     while ((inb(port+5) & 0x20)==0);
 235     outb(c,port);
 236     if (c==0x0a)
 237     {
 238         while ((inb(port+5) & 0x20)==0);
 239         outb(0x0d,port);
 240     }
 241 }
 242
 243 static int ser_printk(const char *fmt, ...)
 244 {
 245     va_list args;
 246     int i;
 247
 248     va_start(args,fmt);
 249     i = vsprintf(strbuf,fmt,args);
 250     ser_puts(strbuf);
 251     va_end(args);
 252     return i;
 253 }
 254
 255 #define TRACE(a)    {if (DebugState==1) {ser_printk a;}}
 256 #define TRACE2(a)   {if (DebugState==1 || DebugState==2) {ser_printk a;}}
 257 #define TRACE3(a)   {if (DebugState!=0) {ser_printk a;}}
 258
 259 #else /* !__SERIAL__ */
 260 #define TRACE(a)    {if (DebugState==1) {printk a;}}
 261 #define TRACE2(a)   {if (DebugState==1 || DebugState==2) {printk a;}}
 262 #define TRACE3(a)   {if (DebugState!=0) {printk a;}}
 263 #endif
 264
 265 #else /* !DEBUG */
 266 #define TRACE(a)
 267 #define TRACE2(a)
 268 #define TRACE3(a)
 269 #endif
 270
 271 #ifdef GDTH_STATISTICS
 272 static ulong32 max_rq=0, max_index=0, max_sg=0;
 273 #ifdef INT_COAL
 274 static ulong32 max_int_coal=0;
 275 #endif
 276 static ulong32 act_ints=0, act_ios=0, act_stats=0, act_rq=0;
 277 static struct timer_list gdth_timer;
 278 #endif
 279
 280 #define PTR2USHORT(a)   (ushort)(ulong)(a)
 281 #define GDTOFFSOF(a,b)  (size_t)&(((a*)0)->b)
 282 #define INDEX_OK(i,t)   ((i)<ARRAY_SIZE(t))
 283
 284 #define BUS_L2P(a,b)    ((b)>(a)->virt_bus ? (b-1):(b))
 285
 286 #ifdef CONFIG_ISA
 287 static unchar   gdth_drq_tab[4] = {5,6,7,7};            /* DRQ table */
 288 #endif
 289 #if defined(CONFIG_EISA) || defined(CONFIG_ISA)
 290 static unchar   gdth_irq_tab[6] = {0,10,11,12,14,0};    /* IRQ table */
 291 #endif
 292 static unchar   gdth_polling;                           /* polling if TRUE */
 293 static int      gdth_ctr_count  = 0;                    /* controller count */
 294 static LIST_HEAD(gdth_instances);                       /* controller list */
 295 static unchar   gdth_write_through = FALSE;             /* write through */
 296 static gdth_evt_str ebuffer[MAX_EVENTS];                /* event buffer */
 297 static int elastidx;
 298 static int eoldidx;
 299 static int major;
 300
 301 #define DIN     1                               /* IN data direction */
 302 #define DOU     2                               /* OUT data direction */
 303 #define DNO     DIN                             /* no data transfer */
 304 #define DUN     DIN                             /* unknown data direction */
 305 static unchar gdth_direction_tab[0x100] = {
 306     DNO,DNO,DIN,DIN,DOU,DIN,DIN,DOU,DIN,DUN,DOU,DOU,DUN,DUN,DUN,DIN,
 307     DNO,DIN,DIN,DOU,DIN,DOU,DNO,DNO,DOU,DNO,DIN,DNO,DIN,DOU,DNO,DUN,
 308     DIN,DUN,DIN,DUN,DOU,DIN,DUN,DUN,DIN,DIN,DOU,DNO,DUN,DIN,DOU,DOU,
 309     DOU,DOU,DOU,DNO,DIN,DNO,DNO,DIN,DOU,DOU,DOU,DOU,DIN,DOU,DIN,DOU,
 310     DOU,DOU,DIN,DIN,DIN,DNO,DUN,DNO,DNO,DNO,DUN,DNO,DOU,DIN,DUN,DUN,
 311     DUN,DUN,DUN,DUN,DUN,DOU,DUN,DUN,DUN,DUN,DIN,DUN,DUN,DUN,DUN,DUN,
 312     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
 313     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
 314     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DIN,DUN,DOU,DUN,DUN,DUN,DUN,DUN,
 315     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DIN,DUN,
 316     DUN,DUN,DUN,DUN,DUN,DNO,DNO,DUN,DIN,DNO,DOU,DUN,DNO,DUN,DOU,DOU,
 317     DOU,DOU,DOU,DNO,DUN,DIN,DOU,DIN,DIN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
 318     DUN,DUN,DOU,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
 319     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
 320     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DOU,DUN,DUN,DUN,DUN,DUN,
 321     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN
 322 };
 323
 324 /* LILO and modprobe/insmod parameters */
 325 /* IRQ list for GDT3000/3020 EISA controllers */
 326 static int irq[MAXHA] __initdata =
 327 {0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
 328  0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};
 329 /* disable driver flag */
 330 static int disable __initdata = 0;
 331 /* reserve flag */
 332 static int reserve_mode = 1;
 333 /* reserve list */
 334 static int reserve_list[MAX_RES_ARGS] =
 335 {0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
 336  0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
 337  0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};
 338 /* scan order for PCI controllers */
 339 static int reverse_scan = 0;
 340 /* virtual channel for the host drives */
 341 static int hdr_channel = 0;
 342 /* max. IDs per channel */
 343 static int max_ids = MAXID;
 344 /* rescan all IDs */
 345 static int rescan = 0;
 346 /* shared access */
 347 static int shared_access = 1;
 348 /* enable support for EISA and ISA controllers */
 349 static int probe_eisa_isa = 0;
 350 /* 64 bit DMA mode, support for drives > 2 TB, if force_dma32 = 0 */
 351 static int force_dma32 = 0;
 352
 353 /* parameters for modprobe/insmod */
 354 module_param_array(irq, int, NULL, 0);
 355 module_param(disable, int, 0);
 356 module_param(reserve_mode, int, 0);
 357 module_param_array(reserve_list, int, NULL, 0);
 358 module_param(reverse_scan, int, 0);
 359 module_param(hdr_channel, int, 0);
 360 module_param(max_ids, int, 0);
 361 module_param(rescan, int, 0);
 362 module_param(shared_access, int, 0);
 363 module_param(probe_eisa_isa, int, 0);
 364 module_param(force_dma32, int, 0);
 365 MODULE_AUTHOR("Achim Leubner");
 366 MODULE_LICENSE("GPL");
 367
 368 /* ioctl interface */
 369 static const struct file_operations gdth_fops = {
 370     .ioctl   = gdth_ioctl,
 371     .open    = gdth_open,
 372     .release = gdth_close,
 373 };
 374
 375 #include "gdth_proc.h"
 376 #include "gdth_proc.c"
 377
 378 static gdth_ha_str *gdth_find_ha(int hanum)
 379 {
 380         gdth_ha_str *ha;
 381
 382         list_for_each_entry(ha, &gdth_instances, list)
 383                 if (hanum == ha->hanum)
 384                         return ha;
 385
 386         return NULL;
 387 }
 388
 389 static struct gdth_cmndinfo *gdth_get_cmndinfo(gdth_ha_str *ha)
 390 {
 391         struct gdth_cmndinfo *priv = NULL;
 392         ulong flags;
 393         int i;
 394
 395         spin_lock_irqsave(&ha->smp_lock, flags);
 396
 397         for (i=0; i<GDTH_MAXCMDS; ++i) {
 398                 if (ha->cmndinfo[i].index == 0) {
 399                         priv = &ha->cmndinfo[i];
 400                         memset(priv, 0, sizeof(*priv));
 401                         priv->index = i+1;
 402                         break;
 403                 }
 404         }
 405
 406         spin_unlock_irqrestore(&ha->smp_lock, flags);
 407
 408         return priv;
 409 }
 410
 411 static void gdth_put_cmndinfo(struct gdth_cmndinfo *priv)
 412 {
 413         BUG_ON(!priv);
 414         priv->index = 0;
 415 }
 416
 417 static void gdth_delay(int milliseconds)
 418 {
 419     if (milliseconds == 0) {
 420         udelay(1);
 421     } else {
 422         mdelay(milliseconds);
 423     }
 424 }
 425
 426 static void gdth_scsi_done(struct scsi_cmnd *scp)
 427 {
 428         struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
 429         int internal_command = cmndinfo->internal_command;
 430
 431         TRACE2(("gdth_scsi_done()\n"));
 432
 433         gdth_put_cmndinfo(cmndinfo);
 434         scp->host_scribble = NULL;
 435
 436         if (internal_command)
 437                 complete((struct completion *)scp->request);
 438         else
 439                 scp->scsi_done(scp);
 440 }
 441
 442 int __gdth_execute(struct scsi_device *sdev, gdth_cmd_str *gdtcmd, char *cmnd,
 443                    int timeout, u32 *info)
 444 {
 445     gdth_ha_str *ha = shost_priv(sdev->host);
 446     Scsi_Cmnd *scp;
 447     struct gdth_cmndinfo cmndinfo;
 448     DECLARE_COMPLETION_ONSTACK(wait);
 449     int rval;
 450
 451     scp = kzalloc(sizeof(*scp), GFP_KERNEL);
 452     if (!scp)
 453         return -ENOMEM;
 454
 455     scp->sense_buffer = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
 456     if (!scp->sense_buffer) {
 457         kfree(scp);
 458         return -ENOMEM;
 459     }
 460
 461     scp->device = sdev;
 462     memset(&cmndinfo, 0, sizeof(cmndinfo));
 463
 464     /* use request field to save the ptr. to completion struct. */
 465     scp->request = (struct request *)&wait;
 466     scp->timeout_per_command = timeout*HZ;
 467     scp->cmd_len = 12;
 468     scp->cmnd = cmnd;
 469     cmndinfo.priority = IOCTL_PRI;
 470     cmndinfo.internal_cmd_str = gdtcmd;
 471     cmndinfo.internal_command = 1;
 472
 473     TRACE(("__gdth_execute() cmd 0x%x\n", scp->cmnd[0]));
 474     __gdth_queuecommand(ha, scp, &cmndinfo);
 475
 476     wait_for_completion(&wait);
 477
 478     rval = cmndinfo.status;
 479     if (info)
 480         *info = cmndinfo.info;
 481     kfree(scp->sense_buffer);
 482     kfree(scp);
 483     return rval;
 484 }
 485
 486 int gdth_execute(struct Scsi_Host *shost, gdth_cmd_str *gdtcmd, char *cmnd,
 487                  int timeout, u32 *info)
 488 {
 489     struct scsi_device *sdev = scsi_get_host_dev(shost);
 490     int rval = __gdth_execute(sdev, gdtcmd, cmnd, timeout, info);
 491
 492     scsi_free_host_dev(sdev);
 493     return rval;
 494 }
 495
 496 static void gdth_eval_mapping(ulong32 size, ulong32 *cyls, int *heads, int *secs)
 497 {
 498     *cyls = size /HEADS/SECS;
 499     if (*cyls <= MAXCYLS) {
 500         *heads = HEADS;
 501         *secs = SECS;
 502     } else {                                        /* too high for 64*32 */
 503         *cyls = size /MEDHEADS/MEDSECS;
 504         if (*cyls <= MAXCYLS) {
 505             *heads = MEDHEADS;
 506             *secs = MEDSECS;
 507         } else {                                    /* too high for 127*63 */
 508             *cyls = size /BIGHEADS/BIGSECS;
 509             *heads = BIGHEADS;
 510             *secs = BIGSECS;
 511         }
 512     }
 513 }
 514
 515 /* controller search and initialization functions */
 516 #ifdef CONFIG_EISA
 517 static int __init gdth_search_eisa(ushort eisa_adr)
 518 {
 519     ulong32 id;
 520
 521     TRACE(("gdth_search_eisa() adr. %x\n",eisa_adr));
 522     id = inl(eisa_adr+ID0REG);
 523     if (id == GDT3A_ID || id == GDT3B_ID) {     /* GDT3000A or GDT3000B */
 524         if ((inb(eisa_adr+EISAREG) & 8) == 0)
 525             return 0;                           /* not EISA configured */
 526         return 1;
 527     }
 528     if (id == GDT3_ID)                          /* GDT3000 */
 529         return 1;
 530
 531     return 0;
 532 }
 533 #endif /* CONFIG_EISA */
 534
 535 #ifdef CONFIG_ISA
 536 static int __init gdth_search_isa(ulong32 bios_adr)
 537 {
 538     void __iomem *addr;
 539     ulong32 id;
 540
 541     TRACE(("gdth_search_isa() bios adr. %x\n",bios_adr));
 542     if ((addr = ioremap(bios_adr+BIOS_ID_OFFS, sizeof(ulong32))) != NULL) {
 543         id = readl(addr);
 544         iounmap(addr);
 545         if (id == GDT2_ID)                          /* GDT2000 */
 546             return 1;
 547     }
 548     return 0;
 549 }
 550 #endif /* CONFIG_ISA */
 551
 552 #ifdef CONFIG_PCI
 553 static bool gdth_pci_registered;
 554
 555 static bool gdth_search_vortex(ushort device)
 556 {
 557         if (device <= PCI_DEVICE_ID_VORTEX_GDT6555)
 558                 return true;
 559         if (device >= PCI_DEVICE_ID_VORTEX_GDT6x17RP &&
 560             device <= PCI_DEVICE_ID_VORTEX_GDTMAXRP)
 561                 return true;
 562         if (device == PCI_DEVICE_ID_VORTEX_GDTNEWRX ||
 563             device == PCI_DEVICE_ID_VORTEX_GDTNEWRX2)
 564                 return true;
 565         return false;
 566 }
 567
 568 static int gdth_pci_probe_one(gdth_pci_str *pcistr, gdth_ha_str **ha_out);
 569 static int gdth_pci_init_one(struct pci_dev *pdev,
 570                              const struct pci_device_id *ent);
 571 static void gdth_pci_remove_one(struct pci_dev *pdev);
 572 static void gdth_remove_one(gdth_ha_str *ha);
 573
 574 /* Vortex only makes RAID controllers.
 575  * We do not really want to specify all 550 ids here, so wildcard match.
 576  */
 577 static const struct pci_device_id gdthtable[] = {
 578         { PCI_VDEVICE(VORTEX, PCI_ANY_ID) },
 579         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_SRC) },
 580         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_SRC_XSCALE) },
 581         { }     /* terminate list */
 582 };
 583 MODULE_DEVICE_TABLE(pci, gdthtable);
 584
 585 static struct pci_driver gdth_pci_driver = {
 586         .name           = "gdth",
 587         .id_table       = gdthtable,
 588         .probe          = gdth_pci_init_one,
 589         .remove         = gdth_pci_remove_one,
 590 };
 591
 592 static void gdth_pci_remove_one(struct pci_dev *pdev)
 593 {
 594         gdth_ha_str *ha = pci_get_drvdata(pdev);
 595
 596         pci_set_drvdata(pdev, NULL);
 597
 598         list_del(&ha->list);
 599         gdth_remove_one(ha);
 600
 601         pci_disable_device(pdev);
 602 }
 603
 604 static int gdth_pci_init_one(struct pci_dev *pdev,
 605                                        const struct pci_device_id *ent)
 606 {
 607         ushort vendor = pdev->vendor;
 608         ushort device = pdev->device;
 609         ulong base0, base1, base2;
 610         int rc;
 611         gdth_pci_str gdth_pcistr;
 612         gdth_ha_str *ha = NULL;
 613
 614         TRACE(("gdth_search_dev() cnt %d vendor %x device %x\n",
 615                gdth_ctr_count, vendor, device));
 616
 617         memset(&gdth_pcistr, 0, sizeof(gdth_pcistr));
 618
 619         if (vendor == PCI_VENDOR_ID_VORTEX && !gdth_search_vortex(device))
 620                 return -ENODEV;
 621
 622         rc = pci_enable_device(pdev);
 623         if (rc)
 624                 return rc;
 625
 626         if (gdth_ctr_count >= MAXHA)
 627                 return -EBUSY;
 628
 629         /* GDT PCI controller found, resources are already in pdev */
 630         gdth_pcistr.pdev = pdev;
 631         base0 = pci_resource_flags(pdev, 0);
 632         base1 = pci_resource_flags(pdev, 1);
 633         base2 = pci_resource_flags(pdev, 2);
 634         if (device <= PCI_DEVICE_ID_VORTEX_GDT6000B ||   /* GDT6000/B */
 635             device >= PCI_DEVICE_ID_VORTEX_GDT6x17RP) {  /* MPR */
 636             if (!(base0 & IORESOURCE_MEM))
 637                 return -ENODEV;
 638             gdth_pcistr.dpmem = pci_resource_start(pdev, 0);
 639         } else {                                  /* GDT6110, GDT6120, .. */
 640             if (!(base0 & IORESOURCE_MEM) ||
 641                 !(base2 & IORESOURCE_MEM) ||
 642                 !(base1 & IORESOURCE_IO))
 643                 return -ENODEV;
 644             gdth_pcistr.dpmem = pci_resource_start(pdev, 2);
 645             gdth_pcistr.io    = pci_resource_start(pdev, 1);
 646         }
 647         TRACE2(("Controller found at %d/%d, irq %d, dpmem 0x%lx\n",
 648                 gdth_pcistr.pdev->bus->number,
 649                 PCI_SLOT(gdth_pcistr.pdev->devfn),
 650                 gdth_pcistr.irq,
 651                 gdth_pcistr.dpmem));
 652
 653         rc = gdth_pci_probe_one(&gdth_pcistr, &ha);
 654         if (rc)
 655                 return rc;
 656
 657         return 0;
 658 }
 659 #endif /* CONFIG_PCI */
 660
 661 #ifdef CONFIG_EISA
 662 static int __init gdth_init_eisa(ushort eisa_adr,gdth_ha_str *ha)
 663 {
 664     ulong32 retries,id;
 665     unchar prot_ver,eisacf,i,irq_found;
 666
 667     TRACE(("gdth_init_eisa() adr. %x\n",eisa_adr));
 668
 669     /* disable board interrupts, deinitialize services */
 670     outb(0xff,eisa_adr+EDOORREG);
 671     outb(0x00,eisa_adr+EDENABREG);
 672     outb(0x00,eisa_adr+EINTENABREG);
 673
 674     outb(0xff,eisa_adr+LDOORREG);
 675     retries = INIT_RETRIES;
 676     gdth_delay(20);
 677     while (inb(eisa_adr+EDOORREG) != 0xff) {
 678         if (--retries == 0) {
 679             printk("GDT-EISA: Initialization error (DEINIT failed)\n");
 680             return 0;
 681         }
 682         gdth_delay(1);
 683         TRACE2(("wait for DEINIT: retries=%d\n",retries));
 684     }
 685     prot_ver = inb(eisa_adr+MAILBOXREG);
 686     outb(0xff,eisa_adr+EDOORREG);
 687     if (prot_ver != PROTOCOL_VERSION) {
 688         printk("GDT-EISA: Illegal protocol version\n");
 689         return 0;
 690     }
 691     ha->bmic = eisa_adr;
 692     ha->brd_phys = (ulong32)eisa_adr >> 12;
 693
 694     outl(0,eisa_adr+MAILBOXREG);
 695     outl(0,eisa_adr+MAILBOXREG+4);
 696     outl(0,eisa_adr+MAILBOXREG+8);
 697     outl(0,eisa_adr+MAILBOXREG+12);
 698
 699     /* detect IRQ */
 700     if ((id = inl(eisa_adr+ID0REG)) == GDT3_ID) {
 701         ha->oem_id = OEM_ID_ICP;
 702         ha->type = GDT_EISA;
 703         ha->stype = id;
 704         outl(1,eisa_adr+MAILBOXREG+8);
 705         outb(0xfe,eisa_adr+LDOORREG);
 706         retries = INIT_RETRIES;
 707         gdth_delay(20);
 708         while (inb(eisa_adr+EDOORREG) != 0xfe) {
 709             if (--retries == 0) {
 710                 printk("GDT-EISA: Initialization error (get IRQ failed)\n");
 711                 return 0;
 712             }
 713             gdth_delay(1);
 714         }
 715         ha->irq = inb(eisa_adr+MAILBOXREG);
 716         outb(0xff,eisa_adr+EDOORREG);
 717         TRACE2(("GDT3000/3020: IRQ=%d\n",ha->irq));
 718         /* check the result */
 719         if (ha->irq == 0) {
 720                 TRACE2(("Unknown IRQ, use IRQ table from cmd line !\n"));
 721                 for (i = 0, irq_found = FALSE;
 722                      i < MAXHA && irq[i] != 0xff; ++i) {
 723                 if (irq[i]==10 || irq[i]==11 || irq[i]==12 || irq[i]==14) {
 724                     irq_found = TRUE;
 725                     break;
 726                 }
 727                 }
 728             if (irq_found) {
 729                 ha->irq = irq[i];
 730                 irq[i] = 0;
 731                 printk("GDT-EISA: Can not detect controller IRQ,\n");
 732                 printk("Use IRQ setting from command line (IRQ = %d)\n",
 733                        ha->irq);
 734             } else {
 735                 printk("GDT-EISA: Initialization error (unknown IRQ), Enable\n");
 736                 printk("the controller BIOS or use command line parameters\n");
 737                 return 0;
 738             }
 739         }
 740     } else {
 741         eisacf = inb(eisa_adr+EISAREG) & 7;
 742         if (eisacf > 4)                         /* level triggered */
 743             eisacf -= 4;
 744         ha->irq = gdth_irq_tab[eisacf];
 745         ha->oem_id = OEM_ID_ICP;
 746         ha->type = GDT_EISA;
 747         ha->stype = id;
 748     }
 749
 750     ha->dma64_support = 0;
 751     return 1;
 752 }
 753 #endif /* CONFIG_EISA */
 754
 755 #ifdef CONFIG_ISA
 756 static int __init gdth_init_isa(ulong32 bios_adr,gdth_ha_str *ha)
 757 {
 758     register gdt2_dpram_str __iomem *dp2_ptr;
 759     int i;
 760     unchar irq_drq,prot_ver;
 761     ulong32 retries;
 762
 763     TRACE(("gdth_init_isa() bios adr. %x\n",bios_adr));
 764
 765     ha->brd = ioremap(bios_adr, sizeof(gdt2_dpram_str));
 766     if (ha->brd == NULL) {
 767         printk("GDT-ISA: Initialization error (DPMEM remap error)\n");
 768         return 0;
 769     }
 770     dp2_ptr = ha->brd;
 771     writeb(1, &dp2_ptr->io.memlock); /* switch off write protection */
 772     /* reset interface area */
 773     memset_io(&dp2_ptr->u, 0, sizeof(dp2_ptr->u));
 774     if (readl(&dp2_ptr->u) != 0) {
 775         printk("GDT-ISA: Initialization error (DPMEM write error)\n");
 776         iounmap(ha->brd);
 777         return 0;
 778     }
 779
 780     /* disable board interrupts, read DRQ and IRQ */
 781     writeb(0xff, &dp2_ptr->io.irqdel);
 782     writeb(0x00, &dp2_ptr->io.irqen);
 783     writeb(0x00, &dp2_ptr->u.ic.S_Status);
 784     writeb(0x00, &dp2_ptr->u.ic.Cmd_Index);
 785
 786     irq_drq = readb(&dp2_ptr->io.rq);
 787     for (i=0; i<3; ++i) {
 788         if ((irq_drq & 1)==0)
 789             break;
 790         irq_drq >>= 1;
 791     }
 792     ha->drq = gdth_drq_tab[i];
 793
 794     irq_drq = readb(&dp2_ptr->io.rq) >> 3;
 795     for (i=1; i<5; ++i) {
 796         if ((irq_drq & 1)==0)
 797             break;
 798         irq_drq >>= 1;
 799     }
 800     ha->irq = gdth_irq_tab[i];
 801
 802     /* deinitialize services */
 803     writel(bios_adr, &dp2_ptr->u.ic.S_Info[0]);
 804     writeb(0xff, &dp2_ptr->u.ic.S_Cmd_Indx);
 805     writeb(0, &dp2_ptr->io.event);
 806     retries = INIT_RETRIES;
 807     gdth_delay(20);
 808     while (readb(&dp2_ptr->u.ic.S_Status) != 0xff) {
 809         if (--retries == 0) {
 810             printk("GDT-ISA: Initialization error (DEINIT failed)\n");
 811             iounmap(ha->brd);
 812             return 0;
 813         }
 814         gdth_delay(1);
 815     }
 816     prot_ver = (unchar)readl(&dp2_ptr->u.ic.S_Info[0]);
 817     writeb(0, &dp2_ptr->u.ic.Status);
 818     writeb(0xff, &dp2_ptr->io.irqdel);
 819     if (prot_ver != PROTOCOL_VERSION) {
 820         printk("GDT-ISA: Illegal protocol version\n");
 821         iounmap(ha->brd);
 822         return 0;
 823     }
 824
 825     ha->oem_id = OEM_ID_ICP;
 826     ha->type = GDT_ISA;
 827     ha->ic_all_size = sizeof(dp2_ptr->u);
 828     ha->stype= GDT2_ID;
 829     ha->brd_phys = bios_adr >> 4;
 830
 831     /* special request to controller BIOS */
 832     writel(0x00, &dp2_ptr->u.ic.S_Info[0]);
 833     writel(0x00, &dp2_ptr->u.ic.S_Info[1]);
 834     writel(0x01, &dp2_ptr->u.ic.S_Info[2]);
 835     writel(0x00, &dp2_ptr->u.ic.S_Info[3]);
 836     writeb(0xfe, &dp2_ptr->u.ic.S_Cmd_Indx);
 837     writeb(0, &dp2_ptr->io.event);
 838     retries = INIT_RETRIES;
 839     gdth_delay(20);
 840     while (readb(&dp2_ptr->u.ic.S_Status) != 0xfe) {
 841         if (--retries == 0) {
 842             printk("GDT-ISA: Initialization error\n");
 843             iounmap(ha->brd);
 844             return 0;
 845         }
 846         gdth_delay(1);
 847     }
 848     writeb(0, &dp2_ptr->u.ic.Status);
 849     writeb(0xff, &dp2_ptr->io.irqdel);
 850
 851     ha->dma64_support = 0;
 852     return 1;
 853 }
 854 #endif /* CONFIG_ISA */
 855
 856 #ifdef CONFIG_PCI
 857 static int gdth_init_pci(struct pci_dev *pdev, gdth_pci_str *pcistr,
 858                                    gdth_ha_str *ha)
 859 {
 860     register gdt6_dpram_str __iomem *dp6_ptr;
 861     register gdt6c_dpram_str __iomem *dp6c_ptr;
 862     register gdt6m_dpram_str __iomem *dp6m_ptr;
 863     ulong32 retries;
 864     unchar prot_ver;
 865     ushort command;
 866     int i, found = FALSE;
 867
 868     TRACE(("gdth_init_pci()\n"));
 869
 870     if (pdev->vendor == PCI_VENDOR_ID_INTEL)
 871         ha->oem_id = OEM_ID_INTEL;
 872     else
 873         ha->oem_id = OEM_ID_ICP;
 874     ha->brd_phys = (pdev->bus->number << 8) | (pdev->devfn & 0xf8);
 875     ha->stype = (ulong32)pdev->device;
 876     ha->irq = pdev->irq;
 877     ha->pdev = pdev;
 878
 879     if (ha->pdev->device <= PCI_DEVICE_ID_VORTEX_GDT6000B) {  /* GDT6000/B */
 880         TRACE2(("init_pci() dpmem %lx irq %d\n",pcistr->dpmem,ha->irq));
 881         ha->brd = ioremap(pcistr->dpmem, sizeof(gdt6_dpram_str));
 882         if (ha->brd == NULL) {
 883             printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
 884             return 0;
 885         }
 886         /* check and reset interface area */
 887         dp6_ptr = ha->brd;
 888         writel(DPMEM_MAGIC, &dp6_ptr->u);
 889         if (readl(&dp6_ptr->u) != DPMEM_MAGIC) {
 890             printk("GDT-PCI: Cannot access DPMEM at 0x%lx (shadowed?)\n",
 891                    pcistr->dpmem);
 892             found = FALSE;
 893             for (i = 0xC8000; i < 0xE8000; i += 0x4000) {
 894                 iounmap(ha->brd);
 895                 ha->brd = ioremap(i, sizeof(ushort));
 896                 if (ha->brd == NULL) {
 897                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
 898                     return 0;
 899                 }
 900                 if (readw(ha->brd) != 0xffff) {
 901                     TRACE2(("init_pci_old() address 0x%x busy\n", i));
 902                     continue;
 903                 }
 904                 iounmap(ha->brd);
 905                 pci_write_config_dword(pdev, PCI_BASE_ADDRESS_0, i);
 906                 ha->brd = ioremap(i, sizeof(gdt6_dpram_str));
 907                 if (ha->brd == NULL) {
 908                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
 909                     return 0;
 910                 }
 911                 dp6_ptr = ha->brd;
 912                 writel(DPMEM_MAGIC, &dp6_ptr->u);
 913                 if (readl(&dp6_ptr->u) == DPMEM_MAGIC) {
 914                     printk("GDT-PCI: Use free address at 0x%x\n", i);
 915                     found = TRUE;
 916                     break;
 917                 }
 918             }
 919             if (!found) {
 920                 printk("GDT-PCI: No free address found!\n");
 921                 iounmap(ha->brd);
 922                 return 0;
 923             }
 924         }
 925         memset_io(&dp6_ptr->u, 0, sizeof(dp6_ptr->u));
 926         if (readl(&dp6_ptr->u) != 0) {
 927             printk("GDT-PCI: Initialization error (DPMEM write error)\n");
 928             iounmap(ha->brd);
 929             return 0;
 930         }
 931
 932         /* disable board interrupts, deinit services */
 933         writeb(0xff, &dp6_ptr->io.irqdel);
 934         writeb(0x00, &dp6_ptr->io.irqen);
 935         writeb(0x00, &dp6_ptr->u.ic.S_Status);
 936         writeb(0x00, &dp6_ptr->u.ic.Cmd_Index);
 937
 938         writel(pcistr->dpmem, &dp6_ptr->u.ic.S_Info[0]);
 939         writeb(0xff, &dp6_ptr->u.ic.S_Cmd_Indx);
 940         writeb(0, &dp6_ptr->io.event);
 941         retries = INIT_RETRIES;
 942         gdth_delay(20);
 943         while (readb(&dp6_ptr->u.ic.S_Status) != 0xff) {
 944             if (--retries == 0) {
 945                 printk("GDT-PCI: Initialization error (DEINIT failed)\n");
 946                 iounmap(ha->brd);
 947                 return 0;
 948             }
 949             gdth_delay(1);
 950         }
 951         prot_ver = (unchar)readl(&dp6_ptr->u.ic.S_Info[0]);
 952         writeb(0, &dp6_ptr->u.ic.S_Status);
 953         writeb(0xff, &dp6_ptr->io.irqdel);
 954         if (prot_ver != PROTOCOL_VERSION) {
 955             printk("GDT-PCI: Illegal protocol version\n");
 956             iounmap(ha->brd);
 957             return 0;
 958         }
 959
 960         ha->type = GDT_PCI;
 961         ha->ic_all_size = sizeof(dp6_ptr->u);
 962
 963         /* special command to controller BIOS */
 964         writel(0x00, &dp6_ptr->u.ic.S_Info[0]);
 965         writel(0x00, &dp6_ptr->u.ic.S_Info[1]);
 966         writel(0x00, &dp6_ptr->u.ic.S_Info[2]);
 967         writel(0x00, &dp6_ptr->u.ic.S_Info[3]);
 968         writeb(0xfe, &dp6_ptr->u.ic.S_Cmd_Indx);
 969         writeb(0, &dp6_ptr->io.event);
 970         retries = INIT_RETRIES;
 971         gdth_delay(20);
 972         while (readb(&dp6_ptr->u.ic.S_Status) != 0xfe) {
 973             if (--retries == 0) {
 974                 printk("GDT-PCI: Initialization error\n");
 975                 iounmap(ha->brd);
 976                 return 0;
 977             }
 978             gdth_delay(1);
 979         }
 980         writeb(0, &dp6_ptr->u.ic.S_Status);
 981         writeb(0xff, &dp6_ptr->io.irqdel);
 982
 983         ha->dma64_support = 0;
 984
 985     } else if (ha->pdev->device <= PCI_DEVICE_ID_VORTEX_GDT6555) { /* GDT6110, ... */
 986         ha->plx = (gdt6c_plx_regs *)pcistr->io;
 987         TRACE2(("init_pci_new() dpmem %lx irq %d\n",
 988             pcistr->dpmem,ha->irq));
 989         ha->brd = ioremap(pcistr->dpmem, sizeof(gdt6c_dpram_str));
 990         if (ha->brd == NULL) {
 991             printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
 992             iounmap(ha->brd);
 993             return 0;
 994         }
 995         /* check and reset interface area */
 996         dp6c_ptr = ha->brd;
 997         writel(DPMEM_MAGIC, &dp6c_ptr->u);
 998         if (readl(&dp6c_ptr->u) != DPMEM_MAGIC) {
 999             printk("GDT-PCI: Cannot access DPMEM at 0x%lx (shadowed?)\n",
1000                    pcistr->dpmem);
1001             found = FALSE;
1002             for (i = 0xC8000; i < 0xE8000; i += 0x4000) {
1003                 iounmap(ha->brd);
1004                 ha->brd = ioremap(i, sizeof(ushort));
1005                 if (ha->brd == NULL) {
1006                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1007                     return 0;
1008                 }
1009                 if (readw(ha->brd) != 0xffff) {
1010                     TRACE2(("init_pci_plx() address 0x%x busy\n", i));
1011                     continue;
1012                 }
1013                 iounmap(ha->brd);
1014                 pci_write_config_dword(pdev, PCI_BASE_ADDRESS_2, i);
1015                 ha->brd = ioremap(i, sizeof(gdt6c_dpram_str));
1016                 if (ha->brd == NULL) {
1017                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1018                     return 0;
1019                 }
1020                 dp6c_ptr = ha->brd;
1021                 writel(DPMEM_MAGIC, &dp6c_ptr->u);
1022                 if (readl(&dp6c_ptr->u) == DPMEM_MAGIC) {
1023                     printk("GDT-PCI: Use free address at 0x%x\n", i);
1024                     found = TRUE;
1025                     break;
1026                 }
1027             }
1028             if (!found) {
1029                 printk("GDT-PCI: No free address found!\n");
1030                 iounmap(ha->brd);
1031                 return 0;
1032             }
1033         }
1034         memset_io(&dp6c_ptr->u, 0, sizeof(dp6c_ptr->u));
1035         if (readl(&dp6c_ptr->u) != 0) {
1036             printk("GDT-PCI: Initialization error (DPMEM write error)\n");
1037             iounmap(ha->brd);
1038             return 0;
1039         }
1040
1041         /* disable board interrupts, deinit services */
1042         outb(0x00,PTR2USHORT(&ha->plx->control1));
1043         outb(0xff,PTR2USHORT(&ha->plx->edoor_reg));
1044
1045         writeb(0x00, &dp6c_ptr->u.ic.S_Status);
1046         writeb(0x00, &dp6c_ptr->u.ic.Cmd_Index);
1047
1048         writel(pcistr->dpmem, &dp6c_ptr->u.ic.S_Info[0]);
1049         writeb(0xff, &dp6c_ptr->u.ic.S_Cmd_Indx);
1050
1051         outb(1,PTR2USHORT(&ha->plx->ldoor_reg));
1052
1053         retries = INIT_RETRIES;
1054         gdth_delay(20);
1055         while (readb(&dp6c_ptr->u.ic.S_Status) != 0xff) {
1056             if (--retries == 0) {
1057                 printk("GDT-PCI: Initialization error (DEINIT failed)\n");
1058                 iounmap(ha->brd);
1059                 return 0;
1060             }
1061             gdth_delay(1);
1062         }
1063         prot_ver = (unchar)readl(&dp6c_ptr->u.ic.S_Info[0]);
1064         writeb(0, &dp6c_ptr->u.ic.Status);
1065         if (prot_ver != PROTOCOL_VERSION) {
1066             printk("GDT-PCI: Illegal protocol version\n");
1067             iounmap(ha->brd);
1068             return 0;
1069         }
1070
1071         ha->type = GDT_PCINEW;
1072         ha->ic_all_size = sizeof(dp6c_ptr->u);
1073
1074         /* special command to controller BIOS */
1075         writel(0x00, &dp6c_ptr->u.ic.S_Info[0]);
1076         writel(0x00, &dp6c_ptr->u.ic.S_Info[1]);
1077         writel(0x00, &dp6c_ptr->u.ic.S_Info[2]);
1078         writel(0x00, &dp6c_ptr->u.ic.S_Info[3]);
1079         writeb(0xfe, &dp6c_ptr->u.ic.S_Cmd_Indx);
1080
1081         outb(1,PTR2USHORT(&ha->plx->ldoor_reg));
1082
1083         retries = INIT_RETRIES;
1084         gdth_delay(20);
1085         while (readb(&dp6c_ptr->u.ic.S_Status) != 0xfe) {
1086             if (--retries == 0) {
1087                 printk("GDT-PCI: Initialization error\n");
1088                 iounmap(ha->brd);
1089                 return 0;
1090             }
1091             gdth_delay(1);
1092         }
1093         writeb(0, &dp6c_ptr->u.ic.S_Status);
1094
1095         ha->dma64_support = 0;
1096
1097     } else {                                            /* MPR */
1098         TRACE2(("init_pci_mpr() dpmem %lx irq %d\n",pcistr->dpmem,ha->irq));
1099         ha->brd = ioremap(pcistr->dpmem, sizeof(gdt6m_dpram_str));
1100         if (ha->brd == NULL) {
1101             printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1102             return 0;
1103         }
1104
1105         /* manipulate config. space to enable DPMEM, start RP controller */
1106         pci_read_config_word(pdev, PCI_COMMAND, &command);
1107         command |= 6;
1108         pci_write_config_word(pdev, PCI_COMMAND, command);
1109         if (pci_resource_start(pdev, 8) == 1UL)
1110             pci_resource_start(pdev, 8) = 0UL;
1111         i = 0xFEFF0001UL;
1112         pci_write_config_dword(pdev, PCI_ROM_ADDRESS, i);
1113         gdth_delay(1);
1114         pci_write_config_dword(pdev, PCI_ROM_ADDRESS,
1115                                pci_resource_start(pdev, 8));
1116
1117         dp6m_ptr = ha->brd;
1118
1119         /* Ensure that it is safe to access the non HW portions of DPMEM.
1120          * Aditional check needed for Xscale based RAID controllers */
1121         while( ((int)readb(&dp6m_ptr->i960r.sema0_reg) ) & 3 )
1122             gdth_delay(1);
1123
1124         /* check and reset interface area */
1125         writel(DPMEM_MAGIC, &dp6m_ptr->u);
1126         if (readl(&dp6m_ptr->u) != DPMEM_MAGIC) {
1127             printk("GDT-PCI: Cannot access DPMEM at 0x%lx (shadowed?)\n",
1128                    pcistr->dpmem);
1129             found = FALSE;
1130             for (i = 0xC8000; i < 0xE8000; i += 0x4000) {
1131                 iounmap(ha->brd);
1132                 ha->brd = ioremap(i, sizeof(ushort));
1133                 if (ha->brd == NULL) {
1134                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1135                     return 0;
1136                 }
1137                 if (readw(ha->brd) != 0xffff) {
1138                     TRACE2(("init_pci_mpr() address 0x%x busy\n", i));
1139                     continue;
1140                 }
1141                 iounmap(ha->brd);
1142                 pci_write_config_dword(pdev, PCI_BASE_ADDRESS_0, i);
1143                 ha->brd = ioremap(i, sizeof(gdt6m_dpram_str));
1144                 if (ha->brd == NULL) {
1145                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1146                     return 0;
1147                 }
1148                 dp6m_ptr = ha->brd;
1149                 writel(DPMEM_MAGIC, &dp6m_ptr->u);
1150                 if (readl(&dp6m_ptr->u) == DPMEM_MAGIC) {
1151                     printk("GDT-PCI: Use free address at 0x%x\n", i);
1152                     found = TRUE;
1153                     break;
1154                 }
1155             }
1156             if (!found) {
1157                 printk("GDT-PCI: No free address found!\n");
1158                 iounmap(ha->brd);
1159                 return 0;
1160             }
1161         }
1162         memset_io(&dp6m_ptr->u, 0, sizeof(dp6m_ptr->u));
1163
1164         /* disable board interrupts, deinit services */
1165         writeb(readb(&dp6m_ptr->i960r.edoor_en_reg) | 4,
1166                     &dp6m_ptr->i960r.edoor_en_reg);
1167         writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
1168         writeb(0x00, &dp6m_ptr->u.ic.S_Status);
1169         writeb(0x00, &dp6m_ptr->u.ic.Cmd_Index);
1170
1171         writel(pcistr->dpmem, &dp6m_ptr->u.ic.S_Info[0]);
1172         writeb(0xff, &dp6m_ptr->u.ic.S_Cmd_Indx);
1173         writeb(1, &dp6m_ptr->i960r.ldoor_reg);
1174         retries = INIT_RETRIES;
1175         gdth_delay(20);
1176         while (readb(&dp6m_ptr->u.ic.S_Status) != 0xff) {
1177             if (--retries == 0) {
1178                 printk("GDT-PCI: Initialization error (DEINIT failed)\n");
1179                 iounmap(ha->brd);
1180                 return 0;
1181             }
1182             gdth_delay(1);
1183         }
1184         prot_ver = (unchar)readl(&dp6m_ptr->u.ic.S_Info[0]);
1185         writeb(0, &dp6m_ptr->u.ic.S_Status);
1186         if (prot_ver != PROTOCOL_VERSION) {
1187             printk("GDT-PCI: Illegal protocol version\n");
1188             iounmap(ha->brd);
1189             return 0;
1190         }
1191
1192         ha->type = GDT_PCIMPR;
1193         ha->ic_all_size = sizeof(dp6m_ptr->u);
1194
1195         /* special command to controller BIOS */
1196         writel(0x00, &dp6m_ptr->u.ic.S_Info[0]);
1197         writel(0x00, &dp6m_ptr->u.ic.S_Info[1]);
1198         writel(0x00, &dp6m_ptr->u.ic.S_Info[2]);
1199         writel(0x00, &dp6m_ptr->u.ic.S_Info[3]);
1200         writeb(0xfe, &dp6m_ptr->u.ic.S_Cmd_Indx);
1201         writeb(1, &dp6m_ptr->i960r.ldoor_reg);
1202         retries = INIT_RETRIES;
1203         gdth_delay(20);
1204         while (readb(&dp6m_ptr->u.ic.S_Status) != 0xfe) {
1205             if (--retries == 0) {
1206                 printk("GDT-PCI: Initialization error\n");
1207                 iounmap(ha->brd);
1208                 return 0;
1209             }
1210             gdth_delay(1);
1211         }
1212         writeb(0, &dp6m_ptr->u.ic.S_Status);
1213
1214         /* read FW version to detect 64-bit DMA support */
1215         writeb(0xfd, &dp6m_ptr->u.ic.S_Cmd_Indx);
1216         writeb(1, &dp6m_ptr->i960r.ldoor_reg);
1217         retries = INIT_RETRIES;
1218         gdth_delay(20);
1219         while (readb(&dp6m_ptr->u.ic.S_Status) != 0xfd) {
1220             if (--retries == 0) {
1221                 printk("GDT-PCI: Initialization error (DEINIT failed)\n");
1222                 iounmap(ha->brd);
1223                 return 0;
1224             }
1225             gdth_delay(1);
1226         }
1227         prot_ver = (unchar)(readl(&dp6m_ptr->u.ic.S_Info[0]) >> 16);
1228         writeb(0, &dp6m_ptr->u.ic.S_Status);
1229         if (prot_ver < 0x2b)      /* FW < x.43: no 64-bit DMA support */
1230             ha->dma64_support = 0;
1231         else
1232             ha->dma64_support = 1;
1233     }
1234
1235     return 1;
1236 }
1237 #endif /* CONFIG_PCI */
1238
1239 /* controller protocol functions */
1240
1241 static void __init gdth_enable_int(gdth_ha_str *ha)
1242 {
1243     ulong flags;
1244     gdt2_dpram_str __iomem *dp2_ptr;
1245     gdt6_dpram_str __iomem *dp6_ptr;
1246     gdt6m_dpram_str __iomem *dp6m_ptr;
1247
1248     TRACE(("gdth_enable_int() hanum %d\n",ha->hanum));
1249     spin_lock_irqsave(&ha->smp_lock, flags);
1250
1251     if (ha->type == GDT_EISA) {
1252         outb(0xff, ha->bmic + EDOORREG);
1253         outb(0xff, ha->bmic + EDENABREG);
1254         outb(0x01, ha->bmic + EINTENABREG);
1255     } else if (ha->type == GDT_ISA) {
1256         dp2_ptr = ha->brd;
1257         writeb(1, &dp2_ptr->io.irqdel);
1258         writeb(0, &dp2_ptr->u.ic.Cmd_Index);
1259         writeb(1, &dp2_ptr->io.irqen);
1260     } else if (ha->type == GDT_PCI) {
1261         dp6_ptr = ha->brd;
1262         writeb(1, &dp6_ptr->io.irqdel);
1263         writeb(0, &dp6_ptr->u.ic.Cmd_Index);
1264         writeb(1, &dp6_ptr->io.irqen);
1265     } else if (ha->type == GDT_PCINEW) {
1266         outb(0xff, PTR2USHORT(&ha->plx->edoor_reg));
1267         outb(0x03, PTR2USHORT(&ha->plx->control1));
1268     } else if (ha->type == GDT_PCIMPR) {
1269         dp6m_ptr = ha->brd;
1270         writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
1271         writeb(readb(&dp6m_ptr->i960r.edoor_en_reg) & ~4,
1272                     &dp6m_ptr->i960r.edoor_en_reg);
1273     }
1274     spin_unlock_irqrestore(&ha->smp_lock, flags);
1275 }
1276
1277 /* return IStatus if interrupt was from this card else 0 */
1278 static unchar gdth_get_status(gdth_ha_str *ha)
1279 {
1280     unchar IStatus = 0;
1281
1282     TRACE(("gdth_get_status() irq %d ctr_count %d\n", ha->irq, gdth_ctr_count));
1283
1284         if (ha->type == GDT_EISA)
1285             IStatus = inb((ushort)ha->bmic + EDOORREG);
1286         else if (ha->type == GDT_ISA)
1287             IStatus =
1288                 readb(&((gdt2_dpram_str __iomem *)ha->brd)->u.ic.Cmd_Index);
1289         else if (ha->type == GDT_PCI)
1290             IStatus =
1291                 readb(&((gdt6_dpram_str __iomem *)ha->brd)->u.ic.Cmd_Index);
1292         else if (ha->type == GDT_PCINEW)
1293             IStatus = inb(PTR2USHORT(&ha->plx->edoor_reg));
1294         else if (ha->type == GDT_PCIMPR)
1295             IStatus =
1296                 readb(&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.edoor_reg);
1297
1298         return IStatus;
1299 }
1300
1301 static int gdth_test_busy(gdth_ha_str *ha)
1302 {
1303     register int gdtsema0 = 0;
1304
1305     TRACE(("gdth_test_busy() hanum %d\n", ha->hanum));
1306
1307     if (ha->type == GDT_EISA)
1308         gdtsema0 = (int)inb(ha->bmic + SEMA0REG);
1309     else if (ha->type == GDT_ISA)
1310         gdtsema0 = (int)readb(&((gdt2_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
1311     else if (ha->type == GDT_PCI)
1312         gdtsema0 = (int)readb(&((gdt6_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
1313     else if (ha->type == GDT_PCINEW)
1314         gdtsema0 = (int)inb(PTR2USHORT(&ha->plx->sema0_reg));
1315     else if (ha->type == GDT_PCIMPR)
1316         gdtsema0 =
1317             (int)readb(&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.sema0_reg);
1318
1319     return (gdtsema0 & 1);
1320 }
1321
1322
1323 static int gdth_get_cmd_index(gdth_ha_str *ha)
1324 {
1325     int i;
1326
1327     TRACE(("gdth_get_cmd_index() hanum %d\n", ha->hanum));
1328
1329     for (i=0; i<GDTH_MAXCMDS; ++i) {
1330         if (ha->cmd_tab[i].cmnd == UNUSED_CMND) {
1331             ha->cmd_tab[i].cmnd = ha->pccb->RequestBuffer;
1332             ha->cmd_tab[i].service = ha->pccb->Service;
1333             ha->pccb->CommandIndex = (ulong32)i+2;
1334             return (i+2);
1335         }
1336     }
1337     return 0;
1338 }
1339
1340
1341 static void gdth_set_sema0(gdth_ha_str *ha)
1342 {
1343     TRACE(("gdth_set_sema0() hanum %d\n", ha->hanum));
1344
1345     if (ha->type == GDT_EISA) {
1346         outb(1, ha->bmic + SEMA0REG);
1347     } else if (ha->type == GDT_ISA) {
1348         writeb(1, &((gdt2_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
1349     } else if (ha->type == GDT_PCI) {
1350         writeb(1, &((gdt6_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
1351     } else if (ha->type == GDT_PCINEW) {
1352         outb(1, PTR2USHORT(&ha->plx->sema0_reg));
1353     } else if (ha->type == GDT_PCIMPR) {
1354         writeb(1, &((gdt6m_dpram_str __iomem *)ha->brd)->i960r.sema0_reg);
1355     }
1356 }
1357
1358
1359 static void gdth_copy_command(gdth_ha_str *ha)
1360 {
1361     register gdth_cmd_str *cmd_ptr;
1362     register gdt6m_dpram_str __iomem *dp6m_ptr;
1363     register gdt6c_dpram_str __iomem *dp6c_ptr;
1364     gdt6_dpram_str __iomem *dp6_ptr;
1365     gdt2_dpram_str __iomem *dp2_ptr;
1366     ushort cp_count,dp_offset,cmd_no;
1367
1368     TRACE(("gdth_copy_command() hanum %d\n", ha->hanum));
1369
1370     cp_count = ha->cmd_len;
1371     dp_offset= ha->cmd_offs_dpmem;
1372     cmd_no   = ha->cmd_cnt;
1373     cmd_ptr  = ha->pccb;
1374
1375     ++ha->cmd_cnt;
1376     if (ha->type == GDT_EISA)
1377         return;                                 /* no DPMEM, no copy */
1378
1379     /* set cpcount dword aligned */
1380     if (cp_count & 3)
1381         cp_count += (4 - (cp_count & 3));
1382
1383     ha->cmd_offs_dpmem += cp_count;
1384
1385     /* set offset and service, copy command to DPMEM */
1386     if (ha->type == GDT_ISA) {
1387         dp2_ptr = ha->brd;
1388         writew(dp_offset + DPMEM_COMMAND_OFFSET,
1389                     &dp2_ptr->u.ic.comm_queue[cmd_no].offset);
1390         writew((ushort)cmd_ptr->Service,
1391                     &dp2_ptr->u.ic.comm_queue[cmd_no].serv_id);
1392         memcpy_toio(&dp2_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
1393     } else if (ha->type == GDT_PCI) {
1394         dp6_ptr = ha->brd;
1395         writew(dp_offset + DPMEM_COMMAND_OFFSET,
1396                     &dp6_ptr->u.ic.comm_queue[cmd_no].offset);
1397         writew((ushort)cmd_ptr->Service,
1398                     &dp6_ptr->u.ic.comm_queue[cmd_no].serv_id);
1399         memcpy_toio(&dp6_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
1400     } else if (ha->type == GDT_PCINEW) {
1401         dp6c_ptr = ha->brd;
1402         writew(dp_offset + DPMEM_COMMAND_OFFSET,
1403                     &dp6c_ptr->u.ic.comm_queue[cmd_no].offset);
1404         writew((ushort)cmd_ptr->Service,
1405                     &dp6c_ptr->u.ic.comm_queue[cmd_no].serv_id);
1406         memcpy_toio(&dp6c_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
1407     } else if (ha->type == GDT_PCIMPR) {
1408         dp6m_ptr = ha->brd;
1409         writew(dp_offset + DPMEM_COMMAND_OFFSET,
1410                     &dp6m_ptr->u.ic.comm_queue[cmd_no].offset);
1411         writew((ushort)cmd_ptr->Service,
1412                     &dp6m_ptr->u.ic.comm_queue[cmd_no].serv_id);
1413         memcpy_toio(&dp6m_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
1414     }
1415 }
1416
1417
1418 static void gdth_release_event(gdth_ha_str *ha)
1419 {
1420     TRACE(("gdth_release_event() hanum %d\n", ha->hanum));
1421
1422 #ifdef GDTH_STATISTICS
1423     {
1424         ulong32 i,j;
1425         for (i=0,j=0; j<GDTH_MAXCMDS; ++j) {
1426             if (ha->cmd_tab[j].cmnd != UNUSED_CMND)
1427                 ++i;
1428         }
1429         if (max_index < i) {
1430             max_index = i;
1431             TRACE3(("GDT: max_index = %d\n",(ushort)i));
1432         }
1433     }
1434 #endif
1435
1436     if (ha->pccb->OpCode == GDT_INIT)
1437         ha->pccb->Service |= 0x80;
1438
1439     if (ha->type == GDT_EISA) {
1440         if (ha->pccb->OpCode == GDT_INIT)               /* store DMA buffer */
1441             outl(ha->ccb_phys, ha->bmic + MAILBOXREG);
1442         outb(ha->pccb->Service, ha->bmic + LDOORREG);
1443     } else if (ha->type == GDT_ISA) {
1444         writeb(0, &((gdt2_dpram_str __iomem *)ha->brd)->io.event);
1445     } else if (ha->type == GDT_PCI) {
1446         writeb(0, &((gdt6_dpram_str __iomem *)ha->brd)->io.event);
1447     } else if (ha->type == GDT_PCINEW) {
1448         outb(1, PTR2USHORT(&ha->plx->ldoor_reg));
1449     } else if (ha->type == GDT_PCIMPR) {
1450         writeb(1, &((gdt6m_dpram_str __iomem *)ha->brd)->i960r.ldoor_reg);
1451     }
1452 }
1453
1454 static int gdth_wait(gdth_ha_str *ha, int index, ulong32 time)
1455 {
1456     int answer_found = FALSE;
1457     int wait_index = 0;
1458
1459     TRACE(("gdth_wait() hanum %d index %d time %d\n", ha->hanum, index, time));
1460
1461     if (index == 0)
1462         return 1;                               /* no wait required */
1463
1464     do {
1465         __gdth_interrupt(ha, true, &wait_index);
1466         if (wait_index == index) {
1467             answer_found = TRUE;
1468             break;
1469         }
1470         gdth_delay(1);
1471     } while (--time);
1472
1473     while (gdth_test_busy(ha))
1474         gdth_delay(0);
1475
1476     return (answer_found);
1477 }
1478
1479
1480 static int gdth_internal_cmd(gdth_ha_str *ha, unchar service, ushort opcode,
1481                                             ulong32 p1, ulong64 p2, ulong64 p3)
1482 {
1483     register gdth_cmd_str *cmd_ptr;
1484     int retries,index;
1485
1486     TRACE2(("gdth_internal_cmd() service %d opcode %d\n",service,opcode));
1487
1488     cmd_ptr = ha->pccb;
1489     memset((char*)cmd_ptr,0,sizeof(gdth_cmd_str));
1490
1491     /* make command  */
1492     for (retries = INIT_RETRIES;;) {
1493         cmd_ptr->Service          = service;
1494         cmd_ptr->RequestBuffer    = INTERNAL_CMND;
1495         if (!(index=gdth_get_cmd_index(ha))) {
1496             TRACE(("GDT: No free command index found\n"));
1497             return 0;
1498         }
1499         gdth_set_sema0(ha);
1500         cmd_ptr->OpCode           = opcode;
1501         cmd_ptr->BoardNode        = LOCALBOARD;
1502         if (service == CACHESERVICE) {
1503             if (opcode == GDT_IOCTL) {
1504                 cmd_ptr->u.ioctl.subfunc = p1;
1505                 cmd_ptr->u.ioctl.channel = (ulong32)p2;
1506                 cmd_ptr->u.ioctl.param_size = (ushort)p3;
1507                 cmd_ptr->u.ioctl.p_param = ha->scratch_phys;
1508             } else {
1509                 if (ha->cache_feat & GDT_64BIT) {
1510                     cmd_ptr->u.cache64.DeviceNo = (ushort)p1;
1511                     cmd_ptr->u.cache64.BlockNo  = p2;
1512                 } else {
1513                     cmd_ptr->u.cache.DeviceNo = (ushort)p1;
1514                     cmd_ptr->u.cache.BlockNo  = (ulong32)p2;
1515                 }
1516             }
1517         } else if (service == SCSIRAWSERVICE) {
1518             if (ha->raw_feat & GDT_64BIT) {
1519                 cmd_ptr->u.raw64.direction  = p1;
1520                 cmd_ptr->u.raw64.bus        = (unchar)p2;
1521                 cmd_ptr->u.raw64.target     = (unchar)p3;
1522                 cmd_ptr->u.raw64.lun        = (unchar)(p3 >> 8);
1523             } else {
1524                 cmd_ptr->u.raw.direction  = p1;
1525                 cmd_ptr->u.raw.bus        = (unchar)p2;
1526                 cmd_ptr->u.raw.target     = (unchar)p3;
1527                 cmd_ptr->u.raw.lun        = (unchar)(p3 >> 8);
1528             }
1529         } else if (service == SCREENSERVICE) {
1530             if (opcode == GDT_REALTIME) {
1531                 *(ulong32 *)&cmd_ptr->u.screen.su.data[0] = p1;
1532                 *(ulong32 *)&cmd_ptr->u.screen.su.data[4] = (ulong32)p2;
1533                 *(ulong32 *)&cmd_ptr->u.screen.su.data[8] = (ulong32)p3;
1534             }
1535         }
1536         ha->cmd_len          = sizeof(gdth_cmd_str);
1537         ha->cmd_offs_dpmem   = 0;
1538         ha->cmd_cnt          = 0;
1539         gdth_copy_command(ha);
1540         gdth_release_event(ha);
1541         gdth_delay(20);
1542         if (!gdth_wait(ha, index, INIT_TIMEOUT)) {
1543             printk("GDT: Initialization error (timeout service %d)\n",service);
1544             return 0;
1545         }
1546         if (ha->status != S_BSY || --retries == 0)
1547             break;
1548         gdth_delay(1);
1549     }
1550
1551     return (ha->status != S_OK ? 0:1);
1552 }
1553
1554
1555 /* search for devices */
1556
1557 static int __init gdth_search_drives(gdth_ha_str *ha)
1558 {
1559     ushort cdev_cnt, i;
1560     int ok;
1561     ulong32 bus_no, drv_cnt, drv_no, j;
1562     gdth_getch_str *chn;
1563     gdth_drlist_str *drl;
1564     gdth_iochan_str *ioc;
1565     gdth_raw_iochan_str *iocr;
1566     gdth_arcdl_str *alst;
1567     gdth_alist_str *alst2;
1568     gdth_oem_str_ioctl *oemstr;
1569 #ifdef INT_COAL
1570     gdth_perf_modes *pmod;
1571 #endif
1572
1573 #ifdef GDTH_RTC
1574     unchar rtc[12];
1575     ulong flags;
1576 #endif
1577
1578     TRACE(("gdth_search_drives() hanum %d\n", ha->hanum));
1579     ok = 0;
1580
1581     /* initialize controller services, at first: screen service */
1582     ha->screen_feat = 0;
1583     if (!force_dma32) {
1584         ok = gdth_internal_cmd(ha, SCREENSERVICE, GDT_X_INIT_SCR, 0, 0, 0);
1585         if (ok)
1586             ha->screen_feat = GDT_64BIT;
1587     }
1588     if (force_dma32 || (!ok && ha->status == (ushort)S_NOFUNC))
1589         ok = gdth_internal_cmd(ha, SCREENSERVICE, GDT_INIT, 0, 0, 0);
1590     if (!ok) {
1591         printk("GDT-HA %d: Initialization error screen service (code %d)\n",
1592                ha->hanum, ha->status);
1593         return 0;
1594     }
1595     TRACE2(("gdth_search_drives(): SCREENSERVICE initialized\n"));
1596
1597 #ifdef GDTH_RTC
1598     /* read realtime clock info, send to controller */
1599     /* 1. wait for the falling edge of update flag */
1600     spin_lock_irqsave(&rtc_lock, flags);
1601     for (j = 0; j < 1000000; ++j)
1602         if (CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP)
1603             break;
1604     for (j = 0; j < 1000000; ++j)
1605         if (!(CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP))
1606             break;
1607     /* 2. read info */
1608     do {
1609         for (j = 0; j < 12; ++j)
1610             rtc[j] = CMOS_READ(j);
1611     } while (rtc[0] != CMOS_READ(0));
1612     spin_unlock_irqrestore(&rtc_lock, flags);
1613     TRACE2(("gdth_search_drives(): RTC: %x/%x/%x\n",*(ulong32 *)&rtc[0],
1614             *(ulong32 *)&rtc[4], *(ulong32 *)&rtc[8]));
1615     /* 3. send to controller firmware */
1616     gdth_internal_cmd(ha, SCREENSERVICE, GDT_REALTIME, *(ulong32 *)&rtc[0],
1617                       *(ulong32 *)&rtc[4], *(ulong32 *)&rtc[8]);
1618 #endif
1619
1620     /* unfreeze all IOs */
1621     gdth_internal_cmd(ha, CACHESERVICE, GDT_UNFREEZE_IO, 0, 0, 0);
1622
1623     /* initialize cache service */
1624     ha->cache_feat = 0;
1625     if (!force_dma32) {
1626         ok = gdth_internal_cmd(ha, CACHESERVICE, GDT_X_INIT_HOST, LINUX_OS,
1627                                                                          0, 0);
1628         if (ok)
1629             ha->cache_feat = GDT_64BIT;
1630     }
1631     if (force_dma32 || (!ok && ha->status == (ushort)S_NOFUNC))
1632         ok = gdth_internal_cmd(ha, CACHESERVICE, GDT_INIT, LINUX_OS, 0, 0);
1633     if (!ok) {
1634         printk("GDT-HA %d: Initialization error cache service (code %d)\n",
1635                ha->hanum, ha->status);
1636         return 0;
1637     }
1638     TRACE2(("gdth_search_drives(): CACHESERVICE initialized\n"));
1639     cdev_cnt = (ushort)ha->info;
1640     ha->fw_vers = ha->service;
1641
1642 #ifdef INT_COAL
1643     if (ha->type == GDT_PCIMPR) {
1644         /* set perf. modes */
1645         pmod = (gdth_perf_modes *)ha->pscratch;
1646         pmod->version          = 1;
1647         pmod->st_mode          = 1;    /* enable one status buffer */
1648         *((ulong64 *)&pmod->st_buff_addr1) = ha->coal_stat_phys;
1649         pmod->st_buff_indx1    = COALINDEX;
1650         pmod->st_buff_addr2    = 0;
1651         pmod->st_buff_u_addr2  = 0;
1652         pmod->st_buff_indx2    = 0;
1653         pmod->st_buff_size     = sizeof(gdth_coal_status) * MAXOFFSETS;
1654         pmod->cmd_mode         = 0;    // disable all cmd buffers
1655         pmod->cmd_buff_addr1   = 0;
1656         pmod->cmd_buff_u_addr1 = 0;
1657         pmod->cmd_buff_indx1   = 0;
1658         pmod->cmd_buff_addr2   = 0;
1659         pmod->cmd_buff_u_addr2 = 0;
1660         pmod->cmd_buff_indx2   = 0;
1661         pmod->cmd_buff_size    = 0;
1662         pmod->reserved1        = 0;
1663         pmod->reserved2        = 0;
1664         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, SET_PERF_MODES,
1665                               INVALID_CHANNEL,sizeof(gdth_perf_modes))) {
1666             printk("GDT-HA %d: Interrupt coalescing activated\n", ha->hanum);
1667         }
1668     }
1669 #endif
1670
1671     /* detect number of buses - try new IOCTL */
1672     iocr = (gdth_raw_iochan_str *)ha->pscratch;
1673     iocr->hdr.version        = 0xffffffff;
1674     iocr->hdr.list_entries   = MAXBUS;
1675     iocr->hdr.first_chan     = 0;
1676     iocr->hdr.last_chan      = MAXBUS-1;
1677     iocr->hdr.list_offset    = GDTOFFSOF(gdth_raw_iochan_str, list[0]);
1678     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, IOCHAN_RAW_DESC,
1679                           INVALID_CHANNEL,sizeof(gdth_raw_iochan_str))) {
1680         TRACE2(("IOCHAN_RAW_DESC supported!\n"));
1681         ha->bus_cnt = iocr->hdr.chan_count;
1682         for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
1683             if (iocr->list[bus_no].proc_id < MAXID)
1684                 ha->bus_id[bus_no] = iocr->list[bus_no].proc_id;
1685             else
1686                 ha->bus_id[bus_no] = 0xff;
1687         }
1688     } else {
1689         /* old method */
1690         chn = (gdth_getch_str *)ha->pscratch;
1691         for (bus_no = 0; bus_no < MAXBUS; ++bus_no) {
1692             chn->channel_no = bus_no;
1693             if (!gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1694                                    SCSI_CHAN_CNT | L_CTRL_PATTERN,
1695                                    IO_CHANNEL | INVALID_CHANNEL,
1696                                    sizeof(gdth_getch_str))) {
1697                 if (bus_no == 0) {
1698                     printk("GDT-HA %d: Error detecting channel count (0x%x)\n",
1699                            ha->hanum, ha->status);
1700                     return 0;
1701                 }
1702                 break;
1703             }
1704             if (chn->siop_id < MAXID)
1705                 ha->bus_id[bus_no] = chn->siop_id;
1706             else
1707                 ha->bus_id[bus_no] = 0xff;
1708         }
1709         ha->bus_cnt = (unchar)bus_no;
1710     }
1711     TRACE2(("gdth_search_drives() %d channels\n",ha->bus_cnt));
1712
1713     /* read cache configuration */
1714     if (!gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, CACHE_INFO,
1715                            INVALID_CHANNEL,sizeof(gdth_cinfo_str))) {
1716         printk("GDT-HA %d: Initialization error cache service (code %d)\n",
1717                ha->hanum, ha->status);
1718         return 0;
1719     }
1720     ha->cpar = ((gdth_cinfo_str *)ha->pscratch)->cpar;
1721     TRACE2(("gdth_search_drives() cinfo: vs %x sta %d str %d dw %d b %d\n",
1722             ha->cpar.version,ha->cpar.state,ha->cpar.strategy,
1723             ha->cpar.write_back,ha->cpar.block_size));
1724
1725     /* read board info and features */
1726     ha->more_proc = FALSE;
1727     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, BOARD_INFO,
1728                           INVALID_CHANNEL,sizeof(gdth_binfo_str))) {
1729         memcpy(&ha->binfo, (gdth_binfo_str *)ha->pscratch,
1730                sizeof(gdth_binfo_str));
1731         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, BOARD_FEATURES,
1732                               INVALID_CHANNEL,sizeof(gdth_bfeat_str))) {
1733             TRACE2(("BOARD_INFO/BOARD_FEATURES supported\n"));
1734             ha->bfeat = *(gdth_bfeat_str *)ha->pscratch;
1735             ha->more_proc = TRUE;
1736         }
1737     } else {
1738         TRACE2(("BOARD_INFO requires firmware >= 1.10/2.08\n"));
1739         strcpy(ha->binfo.type_string, gdth_ctr_name(ha));
1740     }
1741     TRACE2(("Controller name: %s\n",ha->binfo.type_string));
1742
1743     /* read more informations */
1744     if (ha->more_proc) {
1745         /* physical drives, channel addresses */
1746         ioc = (gdth_iochan_str *)ha->pscratch;
1747         ioc->hdr.version        = 0xffffffff;
1748         ioc->hdr.list_entries   = MAXBUS;
1749         ioc->hdr.first_chan     = 0;
1750         ioc->hdr.last_chan      = MAXBUS-1;
1751         ioc->hdr.list_offset    = GDTOFFSOF(gdth_iochan_str, list[0]);
1752         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, IOCHAN_DESC,
1753                               INVALID_CHANNEL,sizeof(gdth_iochan_str))) {
1754             for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
1755                 ha->raw[bus_no].address = ioc->list[bus_no].address;
1756                 ha->raw[bus_no].local_no = ioc->list[bus_no].local_no;
1757             }
1758         } else {
1759             for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
1760                 ha->raw[bus_no].address = IO_CHANNEL;
1761                 ha->raw[bus_no].local_no = bus_no;
1762             }
1763         }
1764         for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
1765             chn = (gdth_getch_str *)ha->pscratch;
1766             chn->channel_no = ha->raw[bus_no].local_no;
1767             if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1768                                   SCSI_CHAN_CNT | L_CTRL_PATTERN,
1769                                   ha->raw[bus_no].address | INVALID_CHANNEL,
1770                                   sizeof(gdth_getch_str))) {
1771                 ha->raw[bus_no].pdev_cnt = chn->drive_cnt;
1772                 TRACE2(("Channel %d: %d phys. drives\n",
1773                         bus_no,chn->drive_cnt));
1774             }
1775             if (ha->raw[bus_no].pdev_cnt > 0) {
1776                 drl = (gdth_drlist_str *)ha->pscratch;
1777                 drl->sc_no = ha->raw[bus_no].local_no;
1778                 drl->sc_cnt = ha->raw[bus_no].pdev_cnt;
1779                 if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1780                                       SCSI_DR_LIST | L_CTRL_PATTERN,
1781                                       ha->raw[bus_no].address | INVALID_CHANNEL,
1782                                       sizeof(gdth_drlist_str))) {
1783                     for (j = 0; j < ha->raw[bus_no].pdev_cnt; ++j)
1784                         ha->raw[bus_no].id_list[j] = drl->sc_list[j];
1785                 } else {
1786                     ha->raw[bus_no].pdev_cnt = 0;
1787                 }
1788             }
1789         }
1790
1791         /* logical drives */
1792         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, CACHE_DRV_CNT,
1793                               INVALID_CHANNEL,sizeof(ulong32))) {
1794             drv_cnt = *(ulong32 *)ha->pscratch;
1795             if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, CACHE_DRV_LIST,
1796                                   INVALID_CHANNEL,drv_cnt * sizeof(ulong32))) {
1797                 for (j = 0; j < drv_cnt; ++j) {
1798                     drv_no = ((ulong32 *)ha->pscratch)[j];
1799                     if (drv_no < MAX_LDRIVES) {
1800                         ha->hdr[drv_no].is_logdrv = TRUE;
1801                         TRACE2(("Drive %d is log. drive\n",drv_no));
1802                     }
1803                 }
1804             }
1805             alst = (gdth_arcdl_str *)ha->pscratch;
1806             alst->entries_avail = MAX_LDRIVES;
1807             alst->first_entry = 0;
1808             alst->list_offset = GDTOFFSOF(gdth_arcdl_str, list[0]);
1809             if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1810                                   ARRAY_DRV_LIST2 | LA_CTRL_PATTERN,
1811                                   INVALID_CHANNEL, sizeof(gdth_arcdl_str) +
1812                                   (alst->entries_avail-1) * sizeof(gdth_alist_str))) {
1813                 for (j = 0; j < alst->entries_init; ++j) {
1814                     ha->hdr[j].is_arraydrv = alst->list[j].is_arrayd;
1815                     ha->hdr[j].is_master = alst->list[j].is_master;
1816                     ha->hdr[j].is_parity = alst->list[j].is_parity;
1817                     ha->hdr[j].is_hotfix = alst->list[j].is_hotfix;
1818                     ha->hdr[j].master_no = alst->list[j].cd_handle;
1819                 }
1820             } else if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1821                                          ARRAY_DRV_LIST | LA_CTRL_PATTERN,
1822                                          0, 35 * sizeof(gdth_alist_str))) {
1823                 for (j = 0; j < 35; ++j) {
1824                     alst2 = &((gdth_alist_str *)ha->pscratch)[j];
1825                     ha->hdr[j].is_arraydrv = alst2->is_arrayd;
1826                     ha->hdr[j].is_master = alst2->is_master;
1827                     ha->hdr[j].is_parity = alst2->is_parity;
1828                     ha->hdr[j].is_hotfix = alst2->is_hotfix;
1829                     ha->hdr[j].master_no = alst2->cd_handle;
1830                 }
1831             }
1832         }
1833     }
1834
1835     /* initialize raw service */
1836     ha->raw_feat = 0;
1837     if (!force_dma32) {
1838         ok = gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_X_INIT_RAW, 0, 0, 0);
1839         if (ok)
1840             ha->raw_feat = GDT_64BIT;
1841     }
1842     if (force_dma32 || (!ok && ha->status == (ushort)S_NOFUNC))
1843         ok = gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_INIT, 0, 0, 0);
1844     if (!ok) {
1845         printk("GDT-HA %d: Initialization error raw service (code %d)\n",
1846                ha->hanum, ha->status);
1847         return 0;
1848     }
1849     TRACE2(("gdth_search_drives(): RAWSERVICE initialized\n"));
1850
1851     /* set/get features raw service (scatter/gather) */
1852     if (gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_SET_FEAT, SCATTER_GATHER,
1853                           0, 0)) {
1854         TRACE2(("gdth_search_drives(): set features RAWSERVICE OK\n"));
1855         if (gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_GET_FEAT, 0, 0, 0)) {
1856             TRACE2(("gdth_search_dr(): get feat RAWSERVICE %d\n",
1857                     ha->info));
1858             ha->raw_feat |= (ushort)ha->info;
1859         }
1860     }
1861
1862     /* set/get features cache service (equal to raw service) */
1863     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_SET_FEAT, 0,
1864                           SCATTER_GATHER,0)) {
1865         TRACE2(("gdth_search_drives(): set features CACHESERVICE OK\n"));
1866         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_GET_FEAT, 0, 0, 0)) {
1867             TRACE2(("gdth_search_dr(): get feat CACHESERV. %d\n",
1868                     ha->info));
1869             ha->cache_feat |= (ushort)ha->info;
1870         }
1871     }
1872
1873     /* reserve drives for raw service */
1874     if (reserve_mode != 0) {
1875         gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_RESERVE_ALL,
1876                           reserve_mode == 1 ? 1 : 3, 0, 0);
1877         TRACE2(("gdth_search_drives(): RESERVE_ALL code %d\n",
1878                 ha->status));
1879     }
1880     for (i = 0; i < MAX_RES_ARGS; i += 4) {
1881         if (reserve_list[i] == ha->hanum && reserve_list[i+1] < ha->bus_cnt &&
1882             reserve_list[i+2] < ha->tid_cnt && reserve_list[i+3] < MAXLUN) {
1883             TRACE2(("gdth_search_drives(): reserve ha %d bus %d id %d lun %d\n",
1884                     reserve_list[i], reserve_list[i+1],
1885                     reserve_list[i+2], reserve_list[i+3]));
1886             if (!gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_RESERVE, 0,
1887                                    reserve_list[i+1], reserve_list[i+2] |
1888                                    (reserve_list[i+3] << 8))) {
1889                 printk("GDT-HA %d: Error raw service (RESERVE, code %d)\n",
1890                        ha->hanum, ha->status);
1891              }
1892         }
1893     }
1894
1895     /* Determine OEM string using IOCTL */
1896     oemstr = (gdth_oem_str_ioctl *)ha->pscratch;
1897     oemstr->params.ctl_version = 0x01;
1898     oemstr->params.buffer_size = sizeof(oemstr->text);
1899     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1900                           CACHE_READ_OEM_STRING_RECORD,INVALID_CHANNEL,
1901                           sizeof(gdth_oem_str_ioctl))) {
1902         TRACE2(("gdth_search_drives(): CACHE_READ_OEM_STRING_RECORD OK\n"));
1903         printk("GDT-HA %d: Vendor: %s Name: %s\n",
1904                ha->hanum, oemstr->text.oem_company_name, ha->binfo.type_string);
1905         /* Save the Host Drive inquiry data */
1906         strlcpy(ha->oem_name,oemstr->text.scsi_host_drive_inquiry_vendor_id,
1907                 sizeof(ha->oem_name));
1908     } else {
1909         /* Old method, based on PCI ID */
1910         TRACE2(("gdth_search_drives(): CACHE_READ_OEM_STRING_RECORD failed\n"));
1911         printk("GDT-HA %d: Name: %s\n",
1912                ha->hanum, ha->binfo.type_string);
1913         if (ha->oem_id == OEM_ID_INTEL)
1914             strlcpy(ha->oem_name,"Intel  ", sizeof(ha->oem_name));
1915         else
1916             strlcpy(ha->oem_name,"ICP    ", sizeof(ha->oem_name));
1917     }
1918
1919     /* scanning for host drives */
1920     for (i = 0; i < cdev_cnt; ++i)
1921         gdth_analyse_hdrive(ha, i);
1922
1923     TRACE(("gdth_search_drives() OK\n"));
1924     return 1;
1925 }
1926
1927 static int gdth_analyse_hdrive(gdth_ha_str *ha, ushort hdrive)
1928 {
1929     ulong32 drv_cyls;
1930     int drv_hds, drv_secs;
1931
1932     TRACE(("gdth_analyse_hdrive() hanum %d drive %d\n", ha->hanum, hdrive));
1933     if (hdrive >= MAX_HDRIVES)
1934         return 0;
1935
1936     if (!gdth_internal_cmd(ha, CACHESERVICE, GDT_INFO, hdrive, 0, 0))
1937         return 0;
1938     ha->hdr[hdrive].present = TRUE;
1939     ha->hdr[hdrive].size = ha->info;
1940
1941     /* evaluate mapping (sectors per head, heads per cylinder) */
1942     ha->hdr[hdrive].size &= ~SECS32;
1943     if (ha->info2 == 0) {
1944         gdth_eval_mapping(ha->hdr[hdrive].size,&drv_cyls,&drv_hds,&drv_secs);
1945     } else {
1946         drv_hds = ha->info2 & 0xff;
1947         drv_secs = (ha->info2 >> 8) & 0xff;
1948         drv_cyls = (ulong32)ha->hdr[hdrive].size / drv_hds / drv_secs;
1949     }
1950     ha->hdr[hdrive].heads = (unchar)drv_hds;
1951     ha->hdr[hdrive].secs  = (unchar)drv_secs;
1952     /* round size */
1953     ha->hdr[hdrive].size  = drv_cyls * drv_hds * drv_secs;
1954
1955     if (ha->cache_feat & GDT_64BIT) {
1956         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_X_INFO, hdrive, 0, 0)
1957             && ha->info2 != 0) {
1958             ha->hdr[hdrive].size = ((ulong64)ha->info2 << 32) | ha->info;
1959         }
1960     }
1961     TRACE2(("gdth_search_dr() cdr. %d size %d hds %d scs %d\n",
1962             hdrive,ha->hdr[hdrive].size,drv_hds,drv_secs));
1963
1964     /* get informations about device */
1965     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_DEVTYPE, hdrive, 0, 0)) {
1966         TRACE2(("gdth_search_dr() cache drive %d devtype %d\n",
1967                 hdrive,ha->info));
1968         ha->hdr[hdrive].devtype = (ushort)ha->info;
1969     }
1970
1971     /* cluster info */
1972     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_CLUST_INFO, hdrive, 0, 0)) {
1973         TRACE2(("gdth_search_dr() cache drive %d cluster info %d\n",
1974                 hdrive,ha->info));
1975         if (!shared_access)
1976             ha->hdr[hdrive].cluster_type = (unchar)ha->info;
1977     }
1978
1979     /* R/W attributes */
1980     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_RW_ATTRIBS, hdrive, 0, 0)) {
1981         TRACE2(("gdth_search_dr() cache drive %d r/w attrib. %d\n",
1982                 hdrive,ha->info));
1983         ha->hdr[hdrive].rw_attribs = (unchar)ha->info;
1984     }
1985
1986     return 1;
1987 }
1988
1989
1990 /* command queueing/sending functions */
1991
1992 static void gdth_putq(gdth_ha_str *ha, Scsi_Cmnd *scp, unchar priority)
1993 {
1994     struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
1995     register Scsi_Cmnd *pscp;
1996     register Scsi_Cmnd *nscp;
1997     ulong flags;
1998     unchar b, t;
1999
2000     TRACE(("gdth_putq() priority %d\n",priority));
2001     spin_lock_irqsave(&ha->smp_lock, flags);
2002
2003     if (!cmndinfo->internal_command) {
2004         cmndinfo->priority = priority;
2005         b = scp->device->channel;
2006         t = scp->device->id;
2007         if (priority >= DEFAULT_PRI) {
2008             if ((b != ha->virt_bus && ha->raw[BUS_L2P(ha,b)].lock) ||
2009                 (b==ha->virt_bus && t<MAX_HDRIVES && ha->hdr[t].lock)) {
2010                 TRACE2(("gdth_putq(): locked IO ->update_timeout()\n"));
2011                 cmndinfo->timeout = gdth_update_timeout(scp, 0);
2012             }
2013         }
2014     }
2015
2016     if (ha->req_first==NULL) {
2017         ha->req_first = scp;                    /* queue was empty */
2018         scp->SCp.ptr = NULL;
2019     } else {                                    /* queue not empty */
2020         pscp = ha->req_first;
2021         nscp = (Scsi_Cmnd *)pscp->SCp.ptr;
2022         /* priority: 0-highest,..,0xff-lowest */
2023         while (nscp && gdth_cmnd_priv(nscp)->priority <= priority) {
2024             pscp = nscp;
2025             nscp = (Scsi_Cmnd *)pscp->SCp.ptr;
2026         }
2027         pscp->SCp.ptr = (char *)scp;
2028         scp->SCp.ptr  = (char *)nscp;
2029     }
2030     spin_unlock_irqrestore(&ha->smp_lock, flags);
2031
2032 #ifdef GDTH_STATISTICS
2033     flags = 0;
2034     for (nscp=ha->req_first; nscp; nscp=(Scsi_Cmnd*)nscp->SCp.ptr)
2035         ++flags;
2036     if (max_rq < flags) {
2037         max_rq = flags;
2038         TRACE3(("GDT: max_rq = %d\n",(ushort)max_rq));
2039     }
2040 #endif
2041 }
2042
2043 static void gdth_next(gdth_ha_str *ha)
2044 {
2045     register Scsi_Cmnd *pscp;
2046     register Scsi_Cmnd *nscp;
2047     unchar b, t, l, firsttime;
2048     unchar this_cmd, next_cmd;
2049     ulong flags = 0;
2050     int cmd_index;
2051
2052     TRACE(("gdth_next() hanum %d\n", ha->hanum));
2053     if (!gdth_polling)
2054         spin_lock_irqsave(&ha->smp_lock, flags);
2055
2056     ha->cmd_cnt = ha->cmd_offs_dpmem = 0;
2057     this_cmd = firsttime = TRUE;
2058     next_cmd = gdth_polling ? FALSE:TRUE;
2059     cmd_index = 0;
2060
2061     for (nscp = pscp = ha->req_first; nscp; nscp = (Scsi_Cmnd *)nscp->SCp.ptr) {
2062         struct gdth_cmndinfo *nscp_cmndinfo = gdth_cmnd_priv(nscp);
2063         if (nscp != pscp && nscp != (Scsi_Cmnd *)pscp->SCp.ptr)
2064             pscp = (Scsi_Cmnd *)pscp->SCp.ptr;
2065         if (!nscp_cmndinfo->internal_command) {
2066             b = nscp->device->channel;
2067             t = nscp->device->id;
2068             l = nscp->device->lun;
2069             if (nscp_cmndinfo->priority >= DEFAULT_PRI) {
2070                 if ((b != ha->virt_bus && ha->raw[BUS_L2P(ha,b)].lock) ||
2071                     (b == ha->virt_bus && t < MAX_HDRIVES && ha->hdr[t].lock))
2072                     continue;
2073             }
2074         } else
2075             b = t = l = 0;
2076
2077         if (firsttime) {
2078             if (gdth_test_busy(ha)) {        /* controller busy ? */
2079                 TRACE(("gdth_next() controller %d busy !\n", ha->hanum));
2080                 if (!gdth_polling) {
2081                     spin_unlock_irqrestore(&ha->smp_lock, flags);
2082                     return;
2083                 }
2084                 while (gdth_test_busy(ha))
2085                     gdth_delay(1);
2086             }
2087             firsttime = FALSE;
2088         }
2089
2090         if (!nscp_cmndinfo->internal_command) {
2091         if (nscp_cmndinfo->phase == -1) {
2092             nscp_cmndinfo->phase = CACHESERVICE;           /* default: cache svc. */
2093             if (nscp->cmnd[0] == TEST_UNIT_READY) {
2094                 TRACE2(("TEST_UNIT_READY Bus %d Id %d LUN %d\n",
2095                         b, t, l));
2096                 /* TEST_UNIT_READY -> set scan mode */
2097                 if ((ha->scan_mode & 0x0f) == 0) {
2098                     if (b == 0 && t == 0 && l == 0) {
2099                         ha->scan_mode |= 1;
2100                         TRACE2(("Scan mode: 0x%x\n", ha->scan_mode));
2101                     }
2102                 } else if ((ha->scan_mode & 0x0f) == 1) {
2103                     if (b == 0 && ((t == 0 && l == 1) ||
2104                          (t == 1 && l == 0))) {
2105                         nscp_cmndinfo->OpCode = GDT_SCAN_START;
2106                         nscp_cmndinfo->phase = ((ha->scan_mode & 0x10 ? 1:0) << 8)
2107                             | SCSIRAWSERVICE;
2108                         ha->scan_mode = 0x12;
2109                         TRACE2(("Scan mode: 0x%x (SCAN_START)\n",
2110                                 ha->scan_mode));
2111                     } else {
2112                         ha->scan_mode &= 0x10;
2113                         TRACE2(("Scan mode: 0x%x\n", ha->scan_mode));
2114                     }
2115                 } else if (ha->scan_mode == 0x12) {
2116                     if (b == ha->bus_cnt && t == ha->tid_cnt-1) {
2117                         nscp_cmndinfo->phase = SCSIRAWSERVICE;
2118                         nscp_cmndinfo->OpCode = GDT_SCAN_END;
2119                         ha->scan_mode &= 0x10;
2120                         TRACE2(("Scan mode: 0x%x (SCAN_END)\n",
2121                                 ha->scan_mode));
2122                     }
2123                 }
2124             }
2125             if (b == ha->virt_bus && nscp->cmnd[0] != INQUIRY &&
2126                 nscp->cmnd[0] != READ_CAPACITY && nscp->cmnd[0] != MODE_SENSE &&
2127                 (ha->hdr[t].cluster_type & CLUSTER_DRIVE)) {
2128                 /* always GDT_CLUST_INFO! */
2129                 nscp_cmndinfo->OpCode = GDT_CLUST_INFO;
2130             }
2131         }
2132         }
2133
2134         if (nscp_cmndinfo->OpCode != -1) {
2135             if ((nscp_cmndinfo->phase & 0xff) == CACHESERVICE) {
2136                 if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
2137                     this_cmd = FALSE;
2138                 next_cmd = FALSE;
2139             } else if ((nscp_cmndinfo->phase & 0xff) == SCSIRAWSERVICE) {
2140                 if (!(cmd_index=gdth_fill_raw_cmd(ha, nscp, BUS_L2P(ha, b))))
2141                     this_cmd = FALSE;
2142                 next_cmd = FALSE;
2143             } else {
2144                 memset((char*)nscp->sense_buffer,0,16);
2145                 nscp->sense_buffer[0] = 0x70;
2146                 nscp->sense_buffer[2] = NOT_READY;
2147                 nscp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
2148                 if (!nscp_cmndinfo->wait_for_completion)
2149                     nscp_cmndinfo->wait_for_completion++;
2150                 else
2151                     gdth_scsi_done(nscp);
2152             }
2153         } else if (gdth_cmnd_priv(nscp)->internal_command) {
2154             if (!(cmd_index=gdth_special_cmd(ha, nscp)))
2155                 this_cmd = FALSE;
2156             next_cmd = FALSE;
2157         } else if (b != ha->virt_bus) {
2158             if (ha->raw[BUS_L2P(ha,b)].io_cnt[t] >= GDTH_MAX_RAW ||
2159                 !(cmd_index=gdth_fill_raw_cmd(ha, nscp, BUS_L2P(ha, b))))
2160                 this_cmd = FALSE;
2161             else
2162                 ha->raw[BUS_L2P(ha,b)].io_cnt[t]++;
2163         } else if (t >= MAX_HDRIVES || !ha->hdr[t].present || l != 0) {
2164             TRACE2(("Command 0x%x to bus %d id %d lun %d -> IGNORE\n",
2165                     nscp->cmnd[0], b, t, l));
2166             nscp->result = DID_BAD_TARGET << 16;
2167             if (!nscp_cmndinfo->wait_for_completion)
2168                 nscp_cmndinfo->wait_for_completion++;
2169             else
2170                 gdth_scsi_done(nscp);
2171         } else {
2172             switch (nscp->cmnd[0]) {
2173               case TEST_UNIT_READY:
2174               case INQUIRY:
2175               case REQUEST_SENSE:
2176               case READ_CAPACITY:
2177               case VERIFY:
2178               case START_STOP:
2179               case MODE_SENSE:
2180               case SERVICE_ACTION_IN:
2181                 TRACE(("cache cmd %x/%x/%x/%x/%x/%x\n",nscp->cmnd[0],
2182                        nscp->cmnd[1],nscp->cmnd[2],nscp->cmnd[3],
2183                        nscp->cmnd[4],nscp->cmnd[5]));
2184                 if (ha->hdr[t].media_changed && nscp->cmnd[0] != INQUIRY) {
2185                     /* return UNIT_ATTENTION */
2186                     TRACE2(("cmd 0x%x target %d: UNIT_ATTENTION\n",
2187                              nscp->cmnd[0], t));
2188                     ha->hdr[t].media_changed = FALSE;
2189                     memset((char*)nscp->sense_buffer,0,16);
2190                     nscp->sense_buffer[0] = 0x70;
2191                     nscp->sense_buffer[2] = UNIT_ATTENTION;
2192                     nscp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
2193                     if (!nscp_cmndinfo->wait_for_completion)
2194                         nscp_cmndinfo->wait_for_completion++;
2195                     else
2196                         gdth_scsi_done(nscp);
2197                 } else if (gdth_internal_cache_cmd(ha, nscp))
2198                     gdth_scsi_done(nscp);
2199                 break;
2200
2201               case ALLOW_MEDIUM_REMOVAL:
2202                 TRACE(("cache cmd %x/%x/%x/%x/%x/%x\n",nscp->cmnd[0],
2203                        nscp->cmnd[1],nscp->cmnd[2],nscp->cmnd[3],
2204                        nscp->cmnd[4],nscp->cmnd[5]));
2205                 if ( (nscp->cmnd[4]&1) && !(ha->hdr[t].devtype&1) ) {
2206                     TRACE(("Prevent r. nonremov. drive->do nothing\n"));
2207                     nscp->result = DID_OK << 16;
2208                     nscp->sense_buffer[0] = 0;
2209                     if (!nscp_cmndinfo->wait_for_completion)
2210                         nscp_cmndinfo->wait_for_completion++;
2211                     else
2212                         gdth_scsi_done(nscp);
2213                 } else {
2214                     nscp->cmnd[3] = (ha->hdr[t].devtype&1) ? 1:0;
2215                     TRACE(("Prevent/allow r. %d rem. drive %d\n",
2216                            nscp->cmnd[4],nscp->cmnd[3]));
2217                     if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
2218                         this_cmd = FALSE;
2219                 }
2220                 break;
2221
2222               case RESERVE:
2223               case RELEASE:
2224                 TRACE2(("cache cmd %s\n",nscp->cmnd[0] == RESERVE ?
2225                         "RESERVE" : "RELEASE"));
2226                 if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
2227                     this_cmd = FALSE;
2228                 break;
2229
2230               case READ_6:
2231               case WRITE_6:
2232               case READ_10:
2233               case WRITE_10:
2234               case READ_16:
2235               case WRITE_16:
2236                 if (ha->hdr[t].media_changed) {
2237                     /* return UNIT_ATTENTION */
2238                     TRACE2(("cmd 0x%x target %d: UNIT_ATTENTION\n",
2239                              nscp->cmnd[0], t));
2240                     ha->hdr[t].media_changed = FALSE;
2241                     memset((char*)nscp->sense_buffer,0,16);
2242                     nscp->sense_buffer[0] = 0x70;
2243                     nscp->sense_buffer[2] = UNIT_ATTENTION;
2244                     nscp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
2245                     if (!nscp_cmndinfo->wait_for_completion)
2246                         nscp_cmndinfo->wait_for_completion++;
2247                     else
2248                         gdth_scsi_done(nscp);
2249                 } else if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
2250                     this_cmd = FALSE;
2251                 break;
2252
2253               default:
2254                 TRACE2(("cache cmd %x/%x/%x/%x/%x/%x unknown\n",nscp->cmnd[0],
2255                         nscp->cmnd[1],nscp->cmnd[2],nscp->cmnd[3],
2256                         nscp->cmnd[4],nscp->cmnd[5]));
2257                 printk("GDT-HA %d: Unknown SCSI command 0x%x to cache service !\n",
2258                        ha->hanum, nscp->cmnd[0]);
2259                 nscp->result = DID_ABORT << 16;
2260                 if (!nscp_cmndinfo->wait_for_completion)
2261                     nscp_cmndinfo->wait_for_completion++;
2262                 else
2263                     gdth_scsi_done(nscp);
2264                 break;
2265             }
2266         }
2267
2268         if (!this_cmd)
2269             break;
2270         if (nscp == ha->req_first)
2271             ha->req_first = pscp = (Scsi_Cmnd *)nscp->SCp.ptr;
2272         else
2273             pscp->SCp.ptr = nscp->SCp.ptr;
2274         if (!next_cmd)
2275             break;
2276     }
2277
2278     if (ha->cmd_cnt > 0) {
2279         gdth_release_event(ha);
2280     }
2281
2282     if (!gdth_polling)
2283         spin_unlock_irqrestore(&ha->smp_lock, flags);
2284
2285     if (gdth_polling && ha->cmd_cnt > 0) {
2286         if (!gdth_wait(ha, cmd_index, POLL_TIMEOUT))
2287             printk("GDT-HA %d: Command %d timed out !\n",
2288                    ha->hanum, cmd_index);
2289     }
2290 }
2291
2292 /*
2293  * gdth_copy_internal_data() - copy to/from a buffer onto a scsi_cmnd's
2294  * buffers, kmap_atomic() as needed.
2295  */
2296 static void gdth_copy_internal_data(gdth_ha_str *ha, Scsi_Cmnd *scp,
2297                                     char *buffer, ushort count)
2298 {
2299     ushort cpcount,i, max_sg = scsi_sg_count(scp);
2300     ushort cpsum,cpnow;
2301     struct scatterlist *sl;
2302     char *address;
2303
2304     cpcount = min_t(ushort, count, scsi_bufflen(scp));
2305
2306     if (cpcount) {
2307         cpsum=0;
2308         scsi_for_each_sg(scp, sl, max_sg, i) {
2309             unsigned long flags;
2310             cpnow = (ushort)sl->length;
2311             TRACE(("copy_internal() now %d sum %d count %d %d\n",
2312                           cpnow, cpsum, cpcount, scsi_bufflen(scp)));
2313             if (cpsum+cpnow > cpcount)
2314                 cpnow = cpcount - cpsum;
2315             cpsum += cpnow;
2316             if (!sg_page(sl)) {
2317                 printk("GDT-HA %d: invalid sc/gt element in gdth_copy_internal_data()\n",
2318                        ha->hanum);
2319                 return;
2320             }
2321             local_irq_save(flags);
2322             address = kmap_atomic(sg_page(sl), KM_BIO_SRC_IRQ) + sl->offset;
2323             memcpy(address, buffer, cpnow);
2324             flush_dcache_page(sg_page(sl));
2325             kunmap_atomic(address, KM_BIO_SRC_IRQ);
2326             local_irq_restore(flags);
2327             if (cpsum == cpcount)
2328                 break;
2329             buffer += cpnow;
2330         }
2331     } else if (count) {
2332         printk("GDT-HA %d: SCSI command with no buffers but data transfer expected!\n",
2333                ha->hanum);
2334         WARN_ON(1);
2335     }
2336 }
2337
2338 static int gdth_internal_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp)
2339 {
2340     unchar t;
2341     gdth_inq_data inq;
2342     gdth_rdcap_data rdc;
2343     gdth_sense_data sd;
2344     gdth_modep_data mpd;
2345     struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
2346
2347     t  = scp->device->id;
2348     TRACE(("gdth_internal_cache_cmd() cmd 0x%x hdrive %d\n",
2349            scp->cmnd[0],t));
2350
2351     scp->result = DID_OK << 16;
2352     scp->sense_buffer[0] = 0;
2353
2354     switch (scp->cmnd[0]) {
2355       case TEST_UNIT_READY:
2356       case VERIFY:
2357       case START_STOP:
2358         TRACE2(("Test/Verify/Start hdrive %d\n",t));
2359         break;
2360
2361       case INQUIRY:
2362         TRACE2(("Inquiry hdrive %d devtype %d\n",
2363                 t,ha->hdr[t].devtype));
2364         inq.type_qual = (ha->hdr[t].devtype&4) ? TYPE_ROM:TYPE_DISK;
2365         /* you can here set all disks to removable, if you want to do
2366            a flush using the ALLOW_MEDIUM_REMOVAL command */
2367         inq.modif_rmb = 0x00;
2368         if ((ha->hdr[t].devtype & 1) ||
2369             (ha->hdr[t].cluster_type & CLUSTER_DRIVE))
2370             inq.modif_rmb = 0x80;
2371         inq.version   = 2;
2372         inq.resp_aenc = 2;
2373         inq.add_length= 32;
2374         strcpy(inq.vendor,ha->oem_name);
2375         sprintf(inq.product,"Host Drive  #%02d",t);
2376         strcpy(inq.revision,"   ");
2377         gdth_copy_internal_data(ha, scp, (char*)&inq, sizeof(gdth_inq_data));
2378         break;
2379
2380       case REQUEST_SENSE:
2381         TRACE2(("Request sense hdrive %d\n",t));
2382         sd.errorcode = 0x70;
2383         sd.segno     = 0x00;
2384         sd.key       = NO_SENSE;
2385         sd.info      = 0;
2386         sd.add_length= 0;
2387         gdth_copy_internal_data(ha, scp, (char*)&sd, sizeof(gdth_sense_data));
2388         break;
2389
2390       case MODE_SENSE:
2391         TRACE2(("Mode sense hdrive %d\n",t));
2392         memset((char*)&mpd,0,sizeof(gdth_modep_data));
2393         mpd.hd.data_length = sizeof(gdth_modep_data);
2394         mpd.hd.dev_par     = (ha->hdr[t].devtype&2) ? 0x80:0;
2395         mpd.hd.bd_length   = sizeof(mpd.bd);
2396         mpd.bd.block_length[0] = (SECTOR_SIZE & 0x00ff0000) >> 16;
2397         mpd.bd.block_length[1] = (SECTOR_SIZE & 0x0000ff00) >> 8;
2398         mpd.bd.block_length[2] = (SECTOR_SIZE & 0x000000ff);
2399         gdth_copy_internal_data(ha, scp, (char*)&mpd, sizeof(gdth_modep_data));
2400         break;
2401
2402       case READ_CAPACITY:
2403         TRACE2(("Read capacity hdrive %d\n",t));
2404         if (ha->hdr[t].size > (ulong64)0xffffffff)
2405             rdc.last_block_no = 0xffffffff;
2406         else
2407             rdc.last_block_no = cpu_to_be32(ha->hdr[t].size-1);
2408         rdc.block_length  = cpu_to_be32(SECTOR_SIZE);
2409         gdth_copy_internal_data(ha, scp, (char*)&rdc, sizeof(gdth_rdcap_data));
2410         break;
2411
2412       case SERVICE_ACTION_IN:
2413         if ((scp->cmnd[1] & 0x1f) == SAI_READ_CAPACITY_16 &&
2414             (ha->cache_feat & GDT_64BIT)) {
2415             gdth_rdcap16_data rdc16;
2416
2417             TRACE2(("Read capacity (16) hdrive %d\n",t));
2418             rdc16.last_block_no = cpu_to_be64(ha->hdr[t].size-1);
2419             rdc16.block_length  = cpu_to_be32(SECTOR_SIZE);
2420             gdth_copy_internal_data(ha, scp, (char*)&rdc16,
2421                                                  sizeof(gdth_rdcap16_data));
2422         } else {
2423             scp->result = DID_ABORT << 16;
2424         }
2425         break;
2426
2427       default:
2428         TRACE2(("Internal cache cmd 0x%x unknown\n",scp->cmnd[0]));
2429         break;
2430     }
2431
2432     if (!cmndinfo->wait_for_completion)
2433         cmndinfo->wait_for_completion++;
2434     else
2435         return 1;
2436
2437     return 0;
2438 }
2439
2440 static int gdth_fill_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, ushort hdrive)
2441 {
2442     register gdth_cmd_str *cmdp;
2443     struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
2444     ulong32 cnt, blockcnt;
2445     ulong64 no, blockno;
2446     int i, cmd_index, read_write, sgcnt, mode64;
2447
2448     cmdp = ha->pccb;
2449     TRACE(("gdth_fill_cache_cmd() cmd 0x%x cmdsize %d hdrive %d\n",
2450                  scp->cmnd[0],scp->cmd_len,hdrive));
2451
2452     if (ha->type==GDT_EISA && ha->cmd_cnt>0)
2453         return 0;
2454
2455     mode64 = (ha->cache_feat & GDT_64BIT) ? TRUE : FALSE;
2456     /* test for READ_16, WRITE_16 if !mode64 ? ---
2457        not required, should not occur due to error return on
2458        READ_CAPACITY_16 */
2459
2460     cmdp->Service = CACHESERVICE;
2461     cmdp->RequestBuffer = scp;
2462     /* search free command index */
2463     if (!(cmd_index=gdth_get_cmd_index(ha))) {
2464         TRACE(("GDT: No free command index found\n"));
2465         return 0;
2466     }
2467     /* if it's the first command, set command semaphore */
2468     if (ha->cmd_cnt == 0)
2469         gdth_set_sema0(ha);
2470
2471     /* fill command */
2472     read_write = 0;
2473     if (cmndinfo->OpCode != -1)
2474         cmdp->OpCode = cmndinfo->OpCode;   /* special cache cmd. */
2475     else if (scp->cmnd[0] == RESERVE)
2476         cmdp->OpCode = GDT_RESERVE_DRV;
2477     else if (scp->cmnd[0] == RELEASE)
2478         cmdp->OpCode = GDT_RELEASE_DRV;
2479     else if (scp->cmnd[0] == ALLOW_MEDIUM_REMOVAL) {
2480         if (scp->cmnd[4] & 1)                   /* prevent ? */
2481             cmdp->OpCode = GDT_MOUNT;
2482         else if (scp->cmnd[3] & 1)              /* removable drive ? */
2483             cmdp->OpCode = GDT_UNMOUNT;
2484         else
2485             cmdp->OpCode = GDT_FLUSH;
2486     } else if (scp->cmnd[0] == WRITE_6 || scp->cmnd[0] == WRITE_10 ||
2487                scp->cmnd[0] == WRITE_12 || scp->cmnd[0] == WRITE_16
2488     ) {
2489         read_write = 1;
2490         if (gdth_write_through || ((ha->hdr[hdrive].rw_attribs & 1) &&
2491                                    (ha->cache_feat & GDT_WR_THROUGH)))
2492             cmdp->OpCode = GDT_WRITE_THR;
2493         else
2494             cmdp->OpCode = GDT_WRITE;
2495     } else {
2496         read_write = 2;
2497         cmdp->OpCode = GDT_READ;
2498     }
2499
2500     cmdp->BoardNode = LOCALBOARD;
2501     if (mode64) {
2502         cmdp->u.cache64.DeviceNo = hdrive;
2503         cmdp->u.cache64.BlockNo  = 1;
2504         cmdp->u.cache64.sg_canz  = 0;
2505     } else {
2506         cmdp->u.cache.DeviceNo = hdrive;
2507         cmdp->u.cache.BlockNo  = 1;
2508         cmdp->u.cache.sg_canz  = 0;
2509     }
2510
2511     if (read_write) {
2512         if (scp->cmd_len == 16) {
2513             memcpy(&no, &scp->cmnd[2], sizeof(ulong64));
2514             blockno = be64_to_cpu(no);
2515             memcpy(&cnt, &scp->cmnd[10], sizeof(ulong32));
2516             blockcnt = be32_to_cpu(cnt);
2517         } else if (scp->cmd_len == 10) {
2518             memcpy(&no, &scp->cmnd[2], sizeof(ulong32));
2519             blockno = be32_to_cpu(no);
2520             memcpy(&cnt, &scp->cmnd[7], sizeof(ushort));
2521             blockcnt = be16_to_cpu(cnt);
2522         } else {
2523             memcpy(&no, &scp->cmnd[0], sizeof(ulong32));
2524             blockno = be32_to_cpu(no) & 0x001fffffUL;
2525             blockcnt= scp->cmnd[4]==0 ? 0x100 : scp->cmnd[4];
2526         }
2527         if (mode64) {
2528             cmdp->u.cache64.BlockNo = blockno;
2529             cmdp->u.cache64.BlockCnt = blockcnt;
2530         } else {
2531             cmdp->u.cache.BlockNo = (ulong32)blockno;
2532             cmdp->u.cache.BlockCnt = blockcnt;
2533         }
2534
2535         if (scsi_bufflen(scp)) {
2536             cmndinfo->dma_dir = (read_write == 1 ?
2537                 PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE);
2538             sgcnt = pci_map_sg(ha->pdev, scsi_sglist(scp), scsi_sg_count(scp),
2539                                cmndinfo->dma_dir);
2540             if (mode64) {
2541                 struct scatterlist *sl;
2542
2543                 cmdp->u.cache64.DestAddr= (ulong64)-1;
2544                 cmdp->u.cache64.sg_canz = sgcnt;
2545                 scsi_for_each_sg(scp, sl, sgcnt, i) {
2546                     cmdp->u.cache64.sg_lst[i].sg_ptr = sg_dma_address(sl);
2547 #ifdef GDTH_DMA_STATISTICS
2548                     if (cmdp->u.cache64.sg_lst[i].sg_ptr > (ulong64)0xffffffff)
2549                         ha->dma64_cnt++;
2550                     else
2551                         ha->dma32_cnt++;
2552 #endif
2553                     cmdp->u.cache64.sg_lst[i].sg_len = sg_dma_len(sl);
2554                 }
2555             } else {
2556                 struct scatterlist *sl;
2557
2558                 cmdp->u.cache.DestAddr= 0xffffffff;
2559                 cmdp->u.cache.sg_canz = sgcnt;
2560                 scsi_for_each_sg(scp, sl, sgcnt, i) {
2561                     cmdp->u.cache.sg_lst[i].sg_ptr = sg_dma_address(sl);
2562 #ifdef GDTH_DMA_STATISTICS
2563                     ha->dma32_cnt++;
2564 #endif
2565                     cmdp->u.cache.sg_lst[i].sg_len = sg_dma_len(sl);
2566                 }
2567             }
2568
2569 #ifdef GDTH_STATISTICS
2570             if (max_sg < (ulong32)sgcnt) {
2571                 max_sg = (ulong32)sgcnt;
2572                 TRACE3(("GDT: max_sg = %d\n",max_sg));
2573             }
2574 #endif
2575
2576         }
2577     }
2578     /* evaluate command size, check space */
2579     if (mode64) {
2580         TRACE(("cache cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
2581                cmdp->u.cache64.DestAddr,cmdp->u.cache64.sg_canz,
2582                cmdp->u.cache64.sg_lst[0].sg_ptr,
2583                cmdp->u.cache64.sg_lst[0].sg_len));
2584         TRACE(("cache cmd: cmd %d blockno. %d, blockcnt %d\n",
2585                cmdp->OpCode,cmdp->u.cache64.BlockNo,cmdp->u.cache64.BlockCnt));
2586         ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.cache64.sg_lst) +
2587             (ushort)cmdp->u.cache64.sg_canz * sizeof(gdth_sg64_str);
2588     } else {
2589         TRACE(("cache cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
2590                cmdp->u.cache.DestAddr,cmdp->u.cache.sg_canz,
2591                cmdp->u.cache.sg_lst[0].sg_ptr,
2592                cmdp->u.cache.sg_lst[0].sg_len));
2593         TRACE(("cache cmd: cmd %d blockno. %d, blockcnt %d\n",
2594                cmdp->OpCode,cmdp->u.cache.BlockNo,cmdp->u.cache.BlockCnt));
2595         ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.cache.sg_lst) +
2596             (ushort)cmdp->u.cache.sg_canz * sizeof(gdth_sg_str);
2597     }
2598     if (ha->cmd_len & 3)
2599         ha->cmd_len += (4 - (ha->cmd_len & 3));
2600
2601     if (ha->cmd_cnt > 0) {
2602         if ((ha->cmd_offs_dpmem + ha->cmd_len + DPMEM_COMMAND_OFFSET) >
2603             ha->ic_all_size) {
2604             TRACE2(("gdth_fill_cache() DPMEM overflow\n"));
2605             ha->cmd_tab[cmd_index-2].cmnd = UNUSED_CMND;
2606             return 0;
2607         }
2608     }
2609
2610     /* copy command */
2611     gdth_copy_command(ha);
2612     return cmd_index;
2613 }
2614
2615 static int gdth_fill_raw_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, unchar b)
2616 {
2617     register gdth_cmd_str *cmdp;
2618     ushort i;
2619     dma_addr_t sense_paddr;
2620     int cmd_index, sgcnt, mode64;
2621     unchar t,l;
2622     struct page *page;
2623     ulong offset;
2624     struct gdth_cmndinfo *cmndinfo;
2625
2626     t = scp->device->id;
2627     l = scp->device->lun;
2628     cmdp = ha->pccb;
2629     TRACE(("gdth_fill_raw_cmd() cmd 0x%x bus %d ID %d LUN %d\n",
2630            scp->cmnd[0],b,t,l));
2631
2632     if (ha->type==GDT_EISA && ha->cmd_cnt>0)
2633         return 0;
2634
2635     mode64 = (ha->raw_feat & GDT_64BIT) ? TRUE : FALSE;
2636
2637     cmdp->Service = SCSIRAWSERVICE;
2638     cmdp->RequestBuffer = scp;
2639     /* search free command index */
2640     if (!(cmd_index=gdth_get_cmd_index(ha))) {
2641         TRACE(("GDT: No free command index found\n"));
2642         return 0;
2643     }
2644     /* if it's the first command, set command semaphore */
2645     if (ha->cmd_cnt == 0)
2646         gdth_set_sema0(ha);
2647
2648     cmndinfo = gdth_cmnd_priv(scp);
2649     /* fill command */
2650     if (cmndinfo->OpCode != -1) {
2651         cmdp->OpCode           = cmndinfo->OpCode; /* special raw cmd. */
2652         cmdp->BoardNode        = LOCALBOARD;
2653         if (mode64) {
2654             cmdp->u.raw64.direction = (cmndinfo->phase >> 8);
2655             TRACE2(("special raw cmd 0x%x param 0x%x\n",
2656                     cmdp->OpCode, cmdp->u.raw64.direction));
2657             /* evaluate command size */
2658             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw64.sg_lst);
2659         } else {
2660             cmdp->u.raw.direction  = (cmndinfo->phase >> 8);
2661             TRACE2(("special raw cmd 0x%x param 0x%x\n",
2662                     cmdp->OpCode, cmdp->u.raw.direction));
2663             /* evaluate command size */
2664             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw.sg_lst);
2665         }
2666
2667     } else {
2668         page = virt_to_page(scp->sense_buffer);
2669         offset = (ulong)scp->sense_buffer & ~PAGE_MASK;
2670         sense_paddr = pci_map_page(ha->pdev,page,offset,
2671                                    16,PCI_DMA_FROMDEVICE);
2672
2673         cmndinfo->sense_paddr  = sense_paddr;
2674         cmdp->OpCode           = GDT_WRITE;             /* always */
2675         cmdp->BoardNode        = LOCALBOARD;
2676         if (mode64) {
2677             cmdp->u.raw64.reserved   = 0;
2678             cmdp->u.raw64.mdisc_time = 0;
2679             cmdp->u.raw64.mcon_time  = 0;
2680             cmdp->u.raw64.clen       = scp->cmd_len;
2681             cmdp->u.raw64.target     = t;
2682             cmdp->u.raw64.lun        = l;
2683             cmdp->u.raw64.bus        = b;
2684             cmdp->u.raw64.priority   = 0;
2685             cmdp->u.raw64.sdlen      = scsi_bufflen(scp);
2686             cmdp->u.raw64.sense_len  = 16;
2687             cmdp->u.raw64.sense_data = sense_paddr;
2688             cmdp->u.raw64.direction  =
2689                 gdth_direction_tab[scp->cmnd[0]]==DOU ? GDTH_DATA_OUT:GDTH_DATA_IN;
2690             memcpy(cmdp->u.raw64.cmd,scp->cmnd,16);
2691             cmdp->u.raw64.sg_ranz    = 0;
2692         } else {
2693             cmdp->u.raw.reserved   = 0;
2694             cmdp->u.raw.mdisc_time = 0;
2695             cmdp->u.raw.mcon_time  = 0;
2696             cmdp->u.raw.clen       = scp->cmd_len;
2697             cmdp->u.raw.target     = t;
2698             cmdp->u.raw.lun        = l;
2699             cmdp->u.raw.bus        = b;
2700             cmdp->u.raw.priority   = 0;
2701             cmdp->u.raw.link_p     = 0;
2702             cmdp->u.raw.sdlen      = scsi_bufflen(scp);
2703             cmdp->u.raw.sense_len  = 16;
2704             cmdp->u.raw.sense_data = sense_paddr;
2705             cmdp->u.raw.direction  =
2706                 gdth_direction_tab[scp->cmnd[0]]==DOU ? GDTH_DATA_OUT:GDTH_DATA_IN;
2707             memcpy(cmdp->u.raw.cmd,scp->cmnd,12);
2708             cmdp->u.raw.sg_ranz    = 0;
2709         }
2710
2711         if (scsi_bufflen(scp)) {
2712             cmndinfo->dma_dir = PCI_DMA_BIDIRECTIONAL;
2713             sgcnt = pci_map_sg(ha->pdev, scsi_sglist(scp), scsi_sg_count(scp),
2714                                cmndinfo->dma_dir);
2715             if (mode64) {
2716                 struct scatterlist *sl;
2717
2718                 cmdp->u.raw64.sdata = (ulong64)-1;
2719                 cmdp->u.raw64.sg_ranz = sgcnt;
2720                 scsi_for_each_sg(scp, sl, sgcnt, i) {
2721                     cmdp->u.raw64.sg_lst[i].sg_ptr = sg_dma_address(sl);
2722 #ifdef GDTH_DMA_STATISTICS
2723                     if (cmdp->u.raw64.sg_lst[i].sg_ptr > (ulong64)0xffffffff)
2724                         ha->dma64_cnt++;
2725                     else
2726                         ha->dma32_cnt++;
2727 #endif
2728                     cmdp->u.raw64.sg_lst[i].sg_len = sg_dma_len(sl);
2729                 }
2730             } else {
2731                 struct scatterlist *sl;
2732
2733                 cmdp->u.raw.sdata = 0xffffffff;
2734                 cmdp->u.raw.sg_ranz = sgcnt;
2735                 scsi_for_each_sg(scp, sl, sgcnt, i) {
2736                     cmdp->u.raw.sg_lst[i].sg_ptr = sg_dma_address(sl);
2737 #ifdef GDTH_DMA_STATISTICS
2738                     ha->dma32_cnt++;
2739 #endif
2740                     cmdp->u.raw.sg_lst[i].sg_len = sg_dma_len(sl);
2741                 }
2742             }
2743
2744 #ifdef GDTH_STATISTICS
2745             if (max_sg < sgcnt) {
2746                 max_sg = sgcnt;
2747                 TRACE3(("GDT: max_sg = %d\n",sgcnt));
2748             }
2749 #endif
2750
2751         }
2752         if (mode64) {
2753             TRACE(("raw cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
2754                    cmdp->u.raw64.sdata,cmdp->u.raw64.sg_ranz,
2755                    cmdp->u.raw64.sg_lst[0].sg_ptr,
2756                    cmdp->u.raw64.sg_lst[0].sg_len));
2757             /* evaluate command size */
2758             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw64.sg_lst) +
2759                 (ushort)cmdp->u.raw64.sg_ranz * sizeof(gdth_sg64_str);
2760         } else {
2761             TRACE(("raw cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
2762                    cmdp->u.raw.sdata,cmdp->u.raw.sg_ranz,
2763                    cmdp->u.raw.sg_lst[0].sg_ptr,
2764                    cmdp->u.raw.sg_lst[0].sg_len));
2765             /* evaluate command size */
2766             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw.sg_lst) +
2767                 (ushort)cmdp->u.raw.sg_ranz * sizeof(gdth_sg_str);
2768         }
2769     }
2770     /* check space */
2771     if (ha->cmd_len & 3)
2772         ha->cmd_len += (4 - (ha->cmd_len & 3));
2773
2774     if (ha->cmd_cnt > 0) {
2775         if ((ha->cmd_offs_dpmem + ha->cmd_len + DPMEM_COMMAND_OFFSET) >
2776             ha->ic_all_size) {
2777             TRACE2(("gdth_fill_raw() DPMEM overflow\n"));
2778             ha->cmd_tab[cmd_index-2].cmnd = UNUSED_CMND;
2779             return 0;
2780         }
2781     }
2782
2783     /* copy command */
2784     gdth_copy_command(ha);
2785     return cmd_index;
2786 }
2787
2788 static int gdth_special_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp)
2789 {
2790     register gdth_cmd_str *cmdp;
2791     struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
2792     int cmd_index;
2793
2794     cmdp= ha->pccb;
2795     TRACE2(("gdth_special_cmd(): "));
2796
2797     if (ha->type==GDT_EISA && ha->cmd_cnt>0)
2798         return 0;
2799
2800     *cmdp = *cmndinfo->internal_cmd_str;
2801     cmdp->RequestBuffer = scp;
2802
2803     /* search free command index */
2804     if (!(cmd_index=gdth_get_cmd_index(ha))) {
2805         TRACE(("GDT: No free command index found\n"));
2806         return 0;
2807     }
2808
2809     /* if it's the first command, set command semaphore */
2810     if (ha->cmd_cnt == 0)
2811        gdth_set_sema0(ha);
2812
2813     /* evaluate command size, check space */
2814     if (cmdp->OpCode == GDT_IOCTL) {
2815         TRACE2(("IOCTL\n"));
2816         ha->cmd_len =
2817             GDTOFFSOF(gdth_cmd_str,u.ioctl.p_param) + sizeof(ulong64);
2818     } else if (cmdp->Service == CACHESERVICE) {
2819         TRACE2(("cache command %d\n",cmdp->OpCode));
2820         if (ha->cache_feat & GDT_64BIT)
2821             ha->cmd_len =
2822                 GDTOFFSOF(gdth_cmd_str,u.cache64.sg_lst) + sizeof(gdth_sg64_str);
2823         else
2824             ha->cmd_len =
2825                 GDTOFFSOF(gdth_cmd_str,u.cache.sg_lst) + sizeof(gdth_sg_str);
2826     } else if (cmdp->Service == SCSIRAWSERVICE) {
2827         TRACE2(("raw command %d\n",cmdp->OpCode));
2828         if (ha->raw_feat & GDT_64BIT)
2829             ha->cmd_len =
2830                 GDTOFFSOF(gdth_cmd_str,u.raw64.sg_lst) + sizeof(gdth_sg64_str);
2831         else
2832             ha->cmd_len =
2833                 GDTOFFSOF(gdth_cmd_str,u.raw.sg_lst) + sizeof(gdth_sg_str);
2834     }
2835
2836     if (ha->cmd_len & 3)
2837         ha->cmd_len += (4 - (ha->cmd_len & 3));
2838
2839     if (ha->cmd_cnt > 0) {
2840         if ((ha->cmd_offs_dpmem + ha->cmd_len + DPMEM_COMMAND_OFFSET) >
2841             ha->ic_all_size) {
2842             TRACE2(("gdth_special_cmd() DPMEM overflow\n"));
2843             ha->cmd_tab[cmd_index-2].cmnd = UNUSED_CMND;
2844             return 0;
2845         }
2846     }
2847
2848     /* copy command */
2849     gdth_copy_command(ha);
2850     return cmd_index;
2851 }
2852
2853
2854 /* Controller event handling functions */
2855 static gdth_evt_str *gdth_store_event(gdth_ha_str *ha, ushort source,
2856                                       ushort idx, gdth_evt_data *evt)
2857 {
2858     gdth_evt_str *e;
2859     struct timeval tv;
2860
2861     /* no GDTH_LOCK_HA() ! */
2862     TRACE2(("gdth_store_event() source %d idx %d\n", source, idx));
2863     if (source == 0)                        /* no source -> no event */
2864         return NULL;
2865
2866     if (ebuffer[elastidx].event_source == source &&
2867         ebuffer[elastidx].event_idx == idx &&
2868         ((evt->size != 0 && ebuffer[elastidx].event_data.size != 0 &&
2869             !memcmp((char *)&ebuffer[elastidx].event_data.eu,
2870             (char *)&evt->eu, evt->size)) ||
2871         (evt->size == 0 && ebuffer[elastidx].event_data.size == 0 &&
2872             !strcmp((char *)&ebuffer[elastidx].event_data.event_string,
2873             (char *)&evt->event_string)))) {
2874         e = &ebuffer[elastidx];
2875         do_gettimeofday(&tv);
2876         e->last_stamp = tv.tv_sec;
2877         ++e->same_count;
2878     } else {
2879         if (ebuffer[elastidx].event_source != 0) {  /* entry not free ? */
2880             ++elastidx;
2881             if (elastidx == MAX_EVENTS)
2882                 elastidx = 0;
2883             if (elastidx == eoldidx) {              /* reached mark ? */
2884                 ++eoldidx;
2885                 if (eoldidx == MAX_EVENTS)
2886                     eoldidx = 0;
2887             }
2888         }
2889         e = &ebuffer[elastidx];
2890         e->event_source = source;
2891         e->event_idx = idx;
2892         do_gettimeofday(&tv);
2893         e->first_stamp = e->last_stamp = tv.tv_sec;
2894         e->same_count = 1;
2895         e->event_data = *evt;
2896         e->application = 0;
2897     }
2898     return e;
2899 }
2900
2901 static int gdth_read_event(gdth_ha_str *ha, int handle, gdth_evt_str *estr)
2902 {
2903     gdth_evt_str *e;
2904     int eindex;
2905     ulong flags;
2906
2907     TRACE2(("gdth_read_event() handle %d\n", handle));
2908     spin_lock_irqsave(&ha->smp_lock, flags);
2909     if (handle == -1)
2910         eindex = eoldidx;
2911     else
2912         eindex = handle;
2913     estr->event_source = 0;
2914
2915     if (eindex >= MAX_EVENTS) {
2916         spin_unlock_irqrestore(&ha->smp_lock, flags);
2917         return eindex;
2918     }
2919     e = &ebuffer[eindex];
2920     if (e->event_source != 0) {
2921         if (eindex != elastidx) {
2922             if (++eindex == MAX_EVENTS)
2923                 eindex = 0;
2924         } else {
2925             eindex = -1;
2926         }
2927         memcpy(estr, e, sizeof(gdth_evt_str));
2928     }
2929     spin_unlock_irqrestore(&ha->smp_lock, flags);
2930     return eindex;
2931 }
2932
2933 static void gdth_readapp_event(gdth_ha_str *ha,
2934                                unchar application, gdth_evt_str *estr)
2935 {
2936     gdth_evt_str *e;
2937     int eindex;
2938     ulong flags;
2939     unchar found = FALSE;
2940
2941     TRACE2(("gdth_readapp_event() app. %d\n", application));
2942     spin_lock_irqsave(&ha->smp_lock, flags);
2943     eindex = eoldidx;
2944     for (;;) {
2945         e = &ebuffer[eindex];
2946         if (e->event_source == 0)
2947             break;
2948         if ((e->application & application) == 0) {
2949             e->application |= application;
2950             found = TRUE;
2951             break;
2952         }
2953         if (eindex == elastidx)
2954             break;
2955         if (++eindex == MAX_EVENTS)
2956             eindex = 0;
2957     }
2958     if (found)
2959         memcpy(estr, e, sizeof(gdth_evt_str));
2960     else
2961         estr->event_source = 0;
2962     spin_unlock_irqrestore(&ha->smp_lock, flags);
2963 }
2964
2965 static void gdth_clear_events(void)
2966 {
2967     TRACE(("gdth_clear_events()"));
2968
2969     eoldidx = elastidx = 0;
2970     ebuffer[0].event_source = 0;
2971 }
2972
2973
2974 /* SCSI interface functions */
2975
2976 static irqreturn_t __gdth_interrupt(gdth_ha_str *ha,
2977                                     int gdth_from_wait, int* pIndex)
2978 {
2979     gdt6m_dpram_str __iomem *dp6m_ptr = NULL;
2980     gdt6_dpram_str __iomem *dp6_ptr;
2981     gdt2_dpram_str __iomem *dp2_ptr;
2982     Scsi_Cmnd *scp;
2983     int rval, i;
2984     unchar IStatus;
2985     ushort Service;
2986     ulong flags = 0;
2987 #ifdef INT_COAL
2988     int coalesced = FALSE;
2989     int next = FALSE;
2990     gdth_coal_status *pcs = NULL;
2991     int act_int_coal = 0;
2992 #endif
2993
2994     TRACE(("gdth_interrupt() IRQ %d\n", ha->irq));
2995
2996     /* if polling and not from gdth_wait() -> return */
2997     if (gdth_polling) {
2998         if (!gdth_from_wait) {
2999             return IRQ_HANDLED;
3000         }
3001     }
3002
3003     if (!gdth_polling)
3004         spin_lock_irqsave(&ha->smp_lock, flags);
3005
3006     /* search controller */
3007     IStatus = gdth_get_status(ha);
3008     if (IStatus == 0) {
3009         /* spurious interrupt */
3010         if (!gdth_polling)
3011             spin_unlock_irqrestore(&ha->smp_lock, flags);
3012         return IRQ_HANDLED;
3013     }
3014
3015 #ifdef GDTH_STATISTICS
3016     ++act_ints;
3017 #endif
3018
3019 #ifdef INT_COAL
3020     /* See if the fw is returning coalesced status */
3021     if (IStatus == COALINDEX) {
3022         /* Coalesced status.  Setup the initial status
3023            buffer pointer and flags */
3024         pcs = ha->coal_stat;
3025         coalesced = TRUE;
3026         next = TRUE;
3027     }
3028
3029     do {
3030         if (coalesced) {
3031             /* For coalesced requests all status
3032                information is found in the status buffer */
3033             IStatus = (unchar)(pcs->status & 0xff);
3034         }
3035 #endif
3036
3037         if (ha->type == GDT_EISA) {
3038             if (IStatus & 0x80) {                       /* error flag */
3039                 IStatus &= ~0x80;
3040                 ha->status = inw(ha->bmic + MAILBOXREG+8);
3041                 TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3042             } else                                      /* no error */
3043                 ha->status = S_OK;
3044             ha->info = inl(ha->bmic + MAILBOXREG+12);
3045             ha->service = inw(ha->bmic + MAILBOXREG+10);
3046             ha->info2 = inl(ha->bmic + MAILBOXREG+4);
3047
3048             outb(0xff, ha->bmic + EDOORREG);    /* acknowledge interrupt */
3049             outb(0x00, ha->bmic + SEMA1REG);    /* reset status semaphore */
3050         } else if (ha->type == GDT_ISA) {
3051             dp2_ptr = ha->brd;
3052             if (IStatus & 0x80) {                       /* error flag */
3053                 IStatus &= ~0x80;
3054                 ha->status = readw(&dp2_ptr->u.ic.Status);
3055                 TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3056             } else                                      /* no error */
3057                 ha->status = S_OK;
3058             ha->info = readl(&dp2_ptr->u.ic.Info[0]);
3059             ha->service = readw(&dp2_ptr->u.ic.Service);
3060             ha->info2 = readl(&dp2_ptr->u.ic.Info[1]);
3061
3062             writeb(0xff, &dp2_ptr->io.irqdel); /* acknowledge interrupt */
3063             writeb(0, &dp2_ptr->u.ic.Cmd_Index);/* reset command index */
3064             writeb(0, &dp2_ptr->io.Sema1);     /* reset status semaphore */
3065         } else if (ha->type == GDT_PCI) {
3066             dp6_ptr = ha->brd;
3067             if (IStatus & 0x80) {                       /* error flag */
3068                 IStatus &= ~0x80;
3069                 ha->status = readw(&dp6_ptr->u.ic.Status);
3070                 TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3071             } else                                      /* no error */
3072                 ha->status = S_OK;
3073             ha->info = readl(&dp6_ptr->u.ic.Info[0]);
3074             ha->service = readw(&dp6_ptr->u.ic.Service);
3075             ha->info2 = readl(&dp6_ptr->u.ic.Info[1]);
3076
3077             writeb(0xff, &dp6_ptr->io.irqdel); /* acknowledge interrupt */
3078             writeb(0, &dp6_ptr->u.ic.Cmd_Index);/* reset command index */
3079             writeb(0, &dp6_ptr->io.Sema1);     /* reset status semaphore */
3080         } else if (ha->type == GDT_PCINEW) {
3081             if (IStatus & 0x80) {                       /* error flag */
3082                 IStatus &= ~0x80;
3083                 ha->status = inw(PTR2USHORT(&ha->plx->status));
3084                 TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3085             } else
3086                 ha->status = S_OK;
3087             ha->info = inl(PTR2USHORT(&ha->plx->info[0]));
3088             ha->service = inw(PTR2USHORT(&ha->plx->service));
3089             ha->info2 = inl(PTR2USHORT(&ha->plx->info[1]));
3090
3091             outb(0xff, PTR2USHORT(&ha->plx->edoor_reg));
3092             outb(0x00, PTR2USHORT(&ha->plx->sema1_reg));
3093         } else if (ha->type == GDT_PCIMPR) {
3094             dp6m_ptr = ha->brd;
3095             if (IStatus & 0x80) {                       /* error flag */
3096                 IStatus &= ~0x80;
3097 #ifdef INT_COAL
3098                 if (coalesced)
3099                     ha->status = pcs->ext_status & 0xffff;
3100                 else
3101 #endif
3102                     ha->status = readw(&dp6m_ptr->i960r.status);
3103                 TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3104             } else                                      /* no error */
3105                 ha->status = S_OK;
3106 #ifdef INT_COAL
3107             /* get information */
3108             if (coalesced) {
3109                 ha->info = pcs->info0;
3110                 ha->info2 = pcs->info1;
3111                 ha->service = (pcs->ext_status >> 16) & 0xffff;
3112             } else
3113 #endif
3114             {
3115                 ha->info = readl(&dp6m_ptr->i960r.info[0]);
3116                 ha->service = readw(&dp6m_ptr->i960r.service);
3117                 ha->info2 = readl(&dp6m_ptr->i960r.info[1]);
3118             }
3119             /* event string */
3120             if (IStatus == ASYNCINDEX) {
3121                 if (ha->service != SCREENSERVICE &&
3122                     (ha->fw_vers & 0xff) >= 0x1a) {
3123                     ha->dvr.severity = readb
3124                         (&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.severity);
3125                     for (i = 0; i < 256; ++i) {
3126                         ha->dvr.event_string[i] = readb
3127                             (&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.evt_str[i]);
3128                         if (ha->dvr.event_string[i] == 0)
3129                             break;
3130                     }
3131                 }
3132             }
3133 #ifdef INT_COAL
3134             /* Make sure that non coalesced interrupts get cleared
3135                before being handled by gdth_async_event/gdth_sync_event */
3136             if (!coalesced)
3137 #endif
3138             {
3139                 writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
3140                 writeb(0, &dp6m_ptr->i960r.sema1_reg);
3141             }
3142         } else {
3143             TRACE2(("gdth_interrupt() unknown controller type\n"));
3144             if (!gdth_polling)
3145                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3146             return IRQ_HANDLED;
3147         }
3148
3149         TRACE(("gdth_interrupt() index %d stat %d info %d\n",
3150                IStatus,ha->status,ha->info));
3151
3152         if (gdth_from_wait) {
3153             *pIndex = (int)IStatus;
3154         }
3155
3156         if (IStatus == ASYNCINDEX) {
3157             TRACE2(("gdth_interrupt() async. event\n"));
3158             gdth_async_event(ha);
3159             if (!gdth_polling)
3160                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3161             gdth_next(ha);
3162             return IRQ_HANDLED;
3163         }
3164
3165         if (IStatus == SPEZINDEX) {
3166             TRACE2(("Service unknown or not initialized !\n"));
3167             ha->dvr.size = sizeof(ha->dvr.eu.driver);
3168             ha->dvr.eu.driver.ionode = ha->hanum;
3169             gdth_store_event(ha, ES_DRIVER, 4, &ha->dvr);
3170             if (!gdth_polling)
3171                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3172             return IRQ_HANDLED;
3173         }
3174         scp     = ha->cmd_tab[IStatus-2].cmnd;
3175         Service = ha->cmd_tab[IStatus-2].service;
3176         ha->cmd_tab[IStatus-2].cmnd = UNUSED_CMND;
3177         if (scp == UNUSED_CMND) {
3178             TRACE2(("gdth_interrupt() index to unused command (%d)\n",IStatus));
3179             ha->dvr.size = sizeof(ha->dvr.eu.driver);
3180             ha->dvr.eu.driver.ionode = ha->hanum;
3181             ha->dvr.eu.driver.index = IStatus;
3182             gdth_store_event(ha, ES_DRIVER, 1, &ha->dvr);
3183             if (!gdth_polling)
3184                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3185             return IRQ_HANDLED;
3186         }
3187         if (scp == INTERNAL_CMND) {
3188             TRACE(("gdth_interrupt() answer to internal command\n"));
3189             if (!gdth_polling)
3190                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3191             return IRQ_HANDLED;
3192         }
3193
3194         TRACE(("gdth_interrupt() sync. status\n"));
3195         rval = gdth_sync_event(ha,Service,IStatus,scp);
3196         if (!gdth_polling)
3197             spin_unlock_irqrestore(&ha->smp_lock, flags);
3198         if (rval == 2) {
3199             gdth_putq(ha, scp, gdth_cmnd_priv(scp)->priority);
3200         } else if (rval == 1) {
3201             gdth_scsi_done(scp);
3202         }
3203
3204 #ifdef INT_COAL
3205         if (coalesced) {
3206             /* go to the next status in the status buffer */
3207             ++pcs;
3208 #ifdef GDTH_STATISTICS
3209             ++act_int_coal;
3210             if (act_int_coal > max_int_coal) {
3211                 max_int_coal = act_int_coal;
3212                 printk("GDT: max_int_coal = %d\n",(ushort)max_int_coal);
3213             }
3214 #endif
3215             /* see if there is another status */
3216             if (pcs->status == 0)
3217                 /* Stop the coalesce loop */
3218                 next = FALSE;
3219         }
3220     } while (next);
3221
3222     /* coalescing only for new GDT_PCIMPR controllers available */
3223     if (ha->type == GDT_PCIMPR && coalesced) {
3224         writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
3225         writeb(0, &dp6m_ptr->i960r.sema1_reg);
3226     }
3227 #endif
3228
3229     gdth_next(ha);
3230     return IRQ_HANDLED;
3231 }
3232
3233 static irqreturn_t gdth_interrupt(int irq, void *dev_id)
3234 {
3235         gdth_ha_str *ha = dev_id;
3236
3237         return __gdth_interrupt(ha, false, NULL);
3238 }
3239
3240 static int gdth_sync_event(gdth_ha_str *ha, int service, unchar index,
3241                                                               Scsi_Cmnd *scp)
3242 {
3243     gdth_msg_str *msg;
3244     gdth_cmd_str *cmdp;
3245     unchar b, t;
3246     struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
3247
3248     cmdp = ha->pccb;
3249     TRACE(("gdth_sync_event() serv %d status %d\n",
3250            service,ha->status));
3251
3252     if (service == SCREENSERVICE) {
3253         msg  = ha->pmsg;
3254         TRACE(("len: %d, answer: %d, ext: %d, alen: %d\n",
3255                msg->msg_len,msg->msg_answer,msg->msg_ext,msg->msg_alen));
3256         if (msg->msg_len > MSGLEN+1)
3257             msg->msg_len = MSGLEN+1;
3258         if (msg->msg_len)
3259             if (!(msg->msg_answer && msg->msg_ext)) {
3260                 msg->msg_text[msg->msg_len] = '\0';
3261                 printk("%s",msg->msg_text);
3262             }
3263
3264         if (msg->msg_ext && !msg->msg_answer) {
3265             while (gdth_test_busy(ha))
3266                 gdth_delay(0);
3267             cmdp->Service       = SCREENSERVICE;
3268             cmdp->RequestBuffer = SCREEN_CMND;
3269             gdth_get_cmd_index(ha);
3270             gdth_set_sema0(ha);
3271             cmdp->OpCode        = GDT_READ;
3272             cmdp->BoardNode     = LOCALBOARD;
3273             cmdp->u.screen.reserved  = 0;
3274             cmdp->u.screen.su.msg.msg_handle= msg->msg_handle;
3275             cmdp->u.screen.su.msg.msg_addr  = ha->msg_phys;
3276             ha->cmd_offs_dpmem = 0;
3277             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.screen.su.msg.msg_addr)
3278                 + sizeof(ulong64);
3279             ha->cmd_cnt = 0;
3280             gdth_copy_command(ha);
3281             gdth_release_event(ha);
3282             return 0;
3283         }
3284
3285         if (msg->msg_answer && msg->msg_alen) {
3286             /* default answers (getchar() not possible) */
3287             if (msg->msg_alen == 1) {
3288                 msg->msg_alen = 0;
3289                 msg->msg_len = 1;
3290                 msg->msg_text[0] = 0;
3291             } else {
3292                 msg->msg_alen -= 2;
3293                 msg->msg_len = 2;
3294                 msg->msg_text[0] = 1;
3295                 msg->msg_text[1] = 0;
3296             }
3297             msg->msg_ext    = 0;
3298             msg->msg_answer = 0;
3299             while (gdth_test_busy(ha))
3300                 gdth_delay(0);
3301             cmdp->Service       = SCREENSERVICE;
3302             cmdp->RequestBuffer = SCREEN_CMND;
3303             gdth_get_cmd_index(ha);
3304             gdth_set_sema0(ha);
3305             cmdp->OpCode        = GDT_WRITE;
3306             cmdp->BoardNode     = LOCALBOARD;
3307             cmdp->u.screen.reserved  = 0;
3308             cmdp->u.screen.su.msg.msg_handle= msg->msg_handle;
3309             cmdp->u.screen.su.msg.msg_addr  = ha->msg_phys;
3310             ha->cmd_offs_dpmem = 0;
3311             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.screen.su.msg.msg_addr)
3312                 + sizeof(ulong64);
3313             ha->cmd_cnt = 0;
3314             gdth_copy_command(ha);
3315             gdth_release_event(ha);
3316             return 0;
3317         }
3318         printk("\n");
3319
3320     } else {
3321         b = scp->device->channel;
3322         t = scp->device->id;
3323         if (cmndinfo->OpCode == -1 && b != ha->virt_bus) {
3324             ha->raw[BUS_L2P(ha,b)].io_cnt[t]--;
3325         }
3326         /* cache or raw service */
3327         if (ha->status == S_BSY) {
3328             TRACE2(("Controller busy -> retry !\n"));
3329             if (cmndinfo->OpCode == GDT_MOUNT)
3330                 cmndinfo->OpCode = GDT_CLUST_INFO;
3331             /* retry */
3332             return 2;
3333         }
3334         if (scsi_bufflen(scp))
3335             pci_unmap_sg(ha->pdev, scsi_sglist(scp), scsi_sg_count(scp),
3336                          cmndinfo->dma_dir);
3337
3338         if (cmndinfo->sense_paddr)
3339             pci_unmap_page(ha->pdev, cmndinfo->sense_paddr, 16,
3340                                                            PCI_DMA_FROMDEVICE);
3341
3342         if (ha->status == S_OK) {
3343             cmndinfo->status = S_OK;
3344             cmndinfo->info = ha->info;
3345             if (cmndinfo->OpCode != -1) {
3346                 TRACE2(("gdth_sync_event(): special cmd 0x%x OK\n",
3347                         cmndinfo->OpCode));
3348                 /* special commands GDT_CLUST_INFO/GDT_MOUNT ? */
3349                 if (cmndinfo->OpCode == GDT_CLUST_INFO) {
3350                     ha->hdr[t].cluster_type = (unchar)ha->info;
3351                     if (!(ha->hdr[t].cluster_type &
3352                         CLUSTER_MOUNTED)) {
3353                         /* NOT MOUNTED -> MOUNT */
3354                         cmndinfo->OpCode = GDT_MOUNT;
3355                         if (ha->hdr[t].cluster_type &
3356                             CLUSTER_RESERVED) {
3357                             /* cluster drive RESERVED (on the other node) */
3358                             cmndinfo->phase = -2;      /* reservation conflict */
3359                         }
3360                     } else {
3361                         cmndinfo->OpCode = -1;
3362                     }
3363                 } else {
3364                     if (cmndinfo->OpCode == GDT_MOUNT) {
3365                         ha->hdr[t].cluster_type |= CLUSTER_MOUNTED;
3366                         ha->hdr[t].media_changed = TRUE;
3367                     } else if (cmndinfo->OpCode == GDT_UNMOUNT) {
3368                         ha->hdr[t].cluster_type &= ~CLUSTER_MOUNTED;
3369                         ha->hdr[t].media_changed = TRUE;
3370                     }
3371                     cmndinfo->OpCode = -1;
3372                 }
3373                 /* retry */
3374                 cmndinfo->priority = HIGH_PRI;
3375                 return 2;
3376             } else {
3377                 /* RESERVE/RELEASE ? */
3378                 if (scp->cmnd[0] == RESERVE) {
3379                     ha->hdr[t].cluster_type |= CLUSTER_RESERVED;
3380                 } else if (scp->cmnd[0] == RELEASE) {
3381                     ha->hdr[t].cluster_type &= ~CLUSTER_RESERVED;
3382                 }
3383                 scp->result = DID_OK << 16;
3384                 scp->sense_buffer[0] = 0;
3385             }
3386         } else {
3387             cmndinfo->status = ha->status;
3388             cmndinfo->info = ha->info;
3389
3390             if (cmndinfo->OpCode != -1) {
3391                 TRACE2(("gdth_sync_event(): special cmd 0x%x error 0x%x\n",
3392                         cmndinfo->OpCode, ha->status));
3393                 if (cmndinfo->OpCode == GDT_SCAN_START ||
3394                     cmndinfo->OpCode == GDT_SCAN_END) {
3395                     cmndinfo->OpCode = -1;
3396                     /* retry */
3397                     cmndinfo->priority = HIGH_PRI;
3398                     return 2;
3399                 }
3400                 memset((char*)scp->sense_buffer,0,16);
3401                 scp->sense_buffer[0] = 0x70;
3402                 scp->sense_buffer[2] = NOT_READY;
3403                 scp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
3404             } else if (service == CACHESERVICE) {
3405                 if (ha->status == S_CACHE_UNKNOWN &&
3406                     (ha->hdr[t].cluster_type &
3407                      CLUSTER_RESERVE_STATE) == CLUSTER_RESERVE_STATE) {
3408                     /* bus reset -> force GDT_CLUST_INFO */
3409                     ha->hdr[t].cluster_type &= ~CLUSTER_RESERVED;
3410                 }
3411                 memset((char*)scp->sense_buffer,0,16);
3412                 if (ha->status == (ushort)S_CACHE_RESERV) {
3413                     scp->result = (DID_OK << 16) | (RESERVATION_CONFLICT << 1);
3414                 } else {
3415                     scp->sense_buffer[0] = 0x70;
3416                     scp->sense_buffer[2] = NOT_READY;
3417                     scp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
3418                 }
3419                 if (!cmndinfo->internal_command) {
3420                     ha->dvr.size = sizeof(ha->dvr.eu.sync);
3421                     ha->dvr.eu.sync.ionode  = ha->hanum;
3422                     ha->dvr.eu.sync.service = service;
3423                     ha->dvr.eu.sync.status  = ha->status;
3424                     ha->dvr.eu.sync.info    = ha->info;
3425                     ha->dvr.eu.sync.hostdrive = t;
3426                     if (ha->status >= 0x8000)
3427                         gdth_store_event(ha, ES_SYNC, 0, &ha->dvr);
3428                     else
3429                         gdth_store_event(ha, ES_SYNC, service, &ha->dvr);
3430                 }
3431             } else {
3432                 /* sense buffer filled from controller firmware (DMA) */
3433                 if (ha->status != S_RAW_SCSI || ha->info >= 0x100) {
3434                     scp->result = DID_BAD_TARGET << 16;
3435                 } else {
3436                     scp->result = (DID_OK << 16) | ha->info;
3437                 }
3438             }
3439         }
3440         if (!cmndinfo->wait_for_completion)
3441             cmndinfo->wait_for_completion++;
3442         else
3443             return 1;
3444     }
3445
3446     return 0;
3447 }
3448
3449 static char *async_cache_tab[] = {
3450 /* 0*/  "\011\000\002\002\002\004\002\006\004"
3451         "GDT HA %u, service %u, async. status %u/%lu unknown",
3452 /* 1*/  "\011\000\002\002\002\004\002\006\004"
3453         "GDT HA %u, service %u, async. status %u/%lu unknown",
3454 /* 2*/  "\005\000\002\006\004"
3455         "GDT HA %u, Host Drive %lu not ready",
3456 /* 3*/  "\005\000\002\006\004"
3457         "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",
3458 /* 4*/  "\005\000\002\006\004"
3459         "GDT HA %u, mirror update on Host Drive %lu failed",
3460 /* 5*/  "\005\000\002\006\004"
3461         "GDT HA %u, Mirror Drive %lu failed",
3462 /* 6*/  "\005\000\002\006\004"
3463         "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",
3464 /* 7*/  "\005\000\002\006\004"
3465         "GDT HA %u, Host Drive %lu write protected",
3466 /* 8*/  "\005\000\002\006\004"
3467         "GDT HA %u, media changed in Host Drive %lu",
3468 /* 9*/  "\005\000\002\006\004"
3469         "GDT HA %u, Host Drive %lu is offline",
3470 /*10*/  "\005\000\002\006\004"
3471         "GDT HA %u, media change of Mirror Drive %lu",
3472 /*11*/  "\005\000\002\006\004"
3473         "GDT HA %u, Mirror Drive %lu is write protected",
3474 /*12*/  "\005\000\002\006\004"
3475         "GDT HA %u, general error on Host Drive %lu. Please check the devices of this drive!",
3476 /*13*/  "\007\000\002\006\002\010\002"
3477         "GDT HA %u, Array Drive %u: Cache Drive %u failed",
3478 /*14*/  "\005\000\002\006\002"
3479         "GDT HA %u, Array Drive %u: FAIL state entered",
3480 /*15*/  "\005\000\002\006\002"
3481         "GDT HA %u, Array Drive %u: error",
3482 /*16*/  "\007\000\002\006\002\010\002"
3483         "GDT HA %u, Array Drive %u: failed drive replaced by Cache Drive %u",
3484 /*17*/  "\005\000\002\006\002"
3485         "GDT HA %u, Array Drive %u: parity build failed",
3486 /*18*/  "\005\000\002\006\002"
3487         "GDT HA %u, Array Drive %u: drive rebuild failed",
3488 /*19*/  "\005\000\002\010\002"
3489         "GDT HA %u, Test of Hot Fix %u failed",
3490 /*20*/  "\005\000\002\006\002"
3491         "GDT HA %u, Array Drive %u: drive build finished successfully",
3492 /*21*/  "\005\000\002\006\002"
3493         "GDT HA %u, Array Drive %u: drive rebuild finished successfully",
3494 /*22*/  "\007\000\002\006\002\010\002"
3495         "GDT HA %u, Array Drive %u: Hot Fix %u activated",
3496 /*23*/  "\005\000\002\006\002"
3497         "GDT HA %u, Host Drive %u: processing of i/o aborted due to serious drive error",
3498 /*24*/  "\005\000\002\010\002"
3499         "GDT HA %u, mirror update on Cache Drive %u completed",
3500 /*25*/  "\005\000\002\010\002"
3501         "GDT HA %u, mirror update on Cache Drive %lu failed",
3502 /*26*/  "\005\000\002\006\002"
3503         "GDT HA %u, Array Drive %u: drive rebuild started",
3504 /*27*/  "\005\000\002\012\001"
3505         "GDT HA %u, Fault bus %u: SHELF OK detected",
3506 /*28*/  "\005\000\002\012\001"
3507         "GDT HA %u, Fault bus %u: SHELF not OK detected",
3508 /*29*/  "\007\000\002\012\001\013\001"
3509         "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug started",
3510 /*30*/  "\007\000\002\012\001\013\001"
3511         "GDT HA %u, Fault bus %u, ID %u: new disk detected",
3512 /*31*/  "\007\000\002\012\001\013\001"
3513         "GDT HA %u, Fault bus %u, ID %u: old disk detected",
3514 /*32*/  "\007\000\002\012\001\013\001"
3515         "GDT HA %u, Fault bus %u, ID %u: plugging an active disk is invalid",
3516 /*33*/  "\007\000\002\012\001\013\001"
3517         "GDT HA %u, Fault bus %u, ID %u: invalid device detected",
3518 /*34*/  "\011\000\002\012\001\013\001\006\004"
3519         "GDT HA %u, Fault bus %u, ID %u: insufficient disk capacity (%lu MB required)",
3520 /*35*/  "\007\000\002\012\001\013\001"
3521         "GDT HA %u, Fault bus %u, ID %u: disk write protected",
3522 /*36*/  "\007\000\002\012\001\013\001"
3523         "GDT HA %u, Fault bus %u, ID %u: disk not available",
3524 /*37*/  "\007\000\002\012\001\006\004"
3525         "GDT HA %u, Fault bus %u: swap detected (%lu)",
3526 /*38*/  "\007\000\002\012\001\013\001"
3527         "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug finished successfully",
3528 /*39*/  "\007\000\002\012\001\013\001"
3529         "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug aborted due to user Hot Plug",
3530 /*40*/  "\007\000\002\012\001\013\001"
3531         "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug aborted",
3532 /*41*/  "\007\000\002\012\001\013\001"
3533         "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug for Hot Fix started",
3534 /*42*/  "\005\000\002\006\002"
3535         "GDT HA %u, Array Drive %u: drive build started",
3536 /*43*/  "\003\000\002"
3537         "GDT HA %u, DRAM parity error detected",
3538 /*44*/  "\005\000\002\006\002"
3539         "GDT HA %u, Mirror Drive %u: update started",
3540 /*45*/  "\007\000\002\006\002\010\002"
3541         "GDT HA %u, Mirror Drive %u: Hot Fix %u activated",
3542 /*46*/  "\005\000\002\006\002"
3543         "GDT HA %u, Array Drive %u: no matching Pool Hot Fix Drive available",
3544 /*47*/  "\005\000\002\006\002"
3545         "GDT HA %u, Array Drive %u: Pool Hot Fix Drive available",
3546 /*48*/  "\005\000\002\006\002"
3547         "GDT HA %u, Mirror Drive %u: no matching Pool Hot Fix Drive available",
3548 /*49*/  "\005\000\002\006\002"
3549         "GDT HA %u, Mirror Drive %u: Pool Hot Fix Drive available",
3550 /*50*/  "\007\000\002\012\001\013\001"
3551         "GDT HA %u, SCSI bus %u, ID %u: IGNORE_WIDE_RESIDUE message received",
3552 /*51*/  "\005\000\002\006\002"
3553         "GDT HA %u, Array Drive %u: expand started",
3554 /*52*/  "\005\000\002\006\002"
3555         "GDT HA %u, Array Drive %u: expand finished successfully",
3556 /*53*/  "\005\000\002\006\002"
3557         "GDT HA %u, Array Drive %u: expand failed",
3558 /*54*/  "\003\000\002"
3559         "GDT HA %u, CPU temperature critical",
3560 /*55*/  "\003\000\002"
3561         "GDT HA %u, CPU temperature OK",
3562 /*56*/  "\005\000\002\006\004"
3563         "GDT HA %u, Host drive %lu created",
3564 /*57*/  "\005\000\002\006\002"
3565         "GDT HA %u, Array Drive %u: expand restarted",
3566 /*58*/  "\005\000\002\006\002"
3567         "GDT HA %u, Array Drive %u: expand stopped",
3568 /*59*/  "\005\000\002\010\002"
3569         "GDT HA %u, Mirror Drive %u: drive build quited",
3570 /*60*/  "\005\000\002\006\002"
3571         "GDT HA %u, Array Drive %u: parity build quited",
3572 /*61*/  "\005\000\002\006\002"
3573         "GDT HA %u, Array Drive %u: drive rebuild quited",
3574 /*62*/  "\005\000\002\006\002"
3575         "GDT HA %u, Array Drive %u: parity verify started",
3576 /*63*/  "\005\000\002\006\002"
3577         "GDT HA %u, Array Drive %u: parity verify done",
3578 /*64*/  "\005\000\002\006\002"
3579         "GDT HA %u, Array Drive %u: parity verify failed",
3580 /*65*/  "\005\000\002\006\002"
3581         "GDT HA %u, Array Drive %u: parity error detected",
3582 /*66*/  "\005\000\002\006\002"
3583         "GDT HA %u, Array Drive %u: parity verify quited",
3584 /*67*/  "\005\000\002\006\002"
3585         "GDT HA %u, Host Drive %u reserved",
3586 /*68*/  "\005\000\002\006\002"
3587         "GDT HA %u, Host Drive %u mounted and released",
3588 /*69*/  "\005\000\002\006\002"
3589         "GDT HA %u, Host Drive %u released",
3590 /*70*/  "\003\000\002"
3591         "GDT HA %u, DRAM error detected and corrected with ECC",
3592 /*71*/  "\003\000\002"
3593         "GDT HA %u, Uncorrectable DRAM error detected with ECC",
3594 /*72*/  "\011\000\002\012\001\013\001\014\001"
3595         "GDT HA %u, SCSI bus %u, ID %u, LUN %u: reassigning block",
3596 /*73*/  "\005\000\002\006\002"
3597         "GDT HA %u, Host drive %u resetted locally",
3598 /*74*/  "\005\000\002\006\002"
3599         "GDT HA %u, Host drive %u resetted remotely",
3600 /*75*/  "\003\000\002"
3601         "GDT HA %u, async. status 75 unknown",
3602 };
3603
3604
3605 static int gdth_async_event(gdth_ha_str *ha)
3606 {
3607     gdth_cmd_str *cmdp;
3608     int cmd_index;
3609
3610     cmdp= ha->pccb;
3611     TRACE2(("gdth_async_event() ha %d serv %d\n",
3612             ha->hanum, ha->service));
3613
3614     if (ha->service == SCREENSERVICE) {
3615         if (ha->status == MSG_REQUEST) {
3616             while (gdth_test_busy(ha))
3617                 gdth_delay(0);
3618             cmdp->Service       = SCREENSERVICE;
3619             cmdp->RequestBuffer = SCREEN_CMND;
3620             cmd_index = gdth_get_cmd_index(ha);
3621             gdth_set_sema0(ha);
3622             cmdp->OpCode        = GDT_READ;
3623             cmdp->BoardNode     = LOCALBOARD;
3624             cmdp->u.screen.reserved  = 0;
3625             cmdp->u.screen.su.msg.msg_handle= MSG_INV_HANDLE;
3626             cmdp->u.screen.su.msg.msg_addr  = ha->msg_phys;
3627             ha->cmd_offs_dpmem = 0;
3628             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.screen.su.msg.msg_addr)
3629                 + sizeof(ulong64);
3630             ha->cmd_cnt = 0;
3631             gdth_copy_command(ha);
3632             if (ha->type == GDT_EISA)
3633                 printk("[EISA slot %d] ",(ushort)ha->brd_phys);
3634             else if (ha->type == GDT_ISA)
3635                 printk("[DPMEM 0x%4X] ",(ushort)ha->brd_phys);
3636             else
3637                 printk("[PCI %d/%d] ",(ushort)(ha->brd_phys>>8),
3638                        (ushort)((ha->brd_phys>>3)&0x1f));
3639             gdth_release_event(ha);
3640         }
3641
3642     } else {
3643         if (ha->type == GDT_PCIMPR &&
3644             (ha->fw_vers & 0xff) >= 0x1a) {
3645             ha->dvr.size = 0;
3646             ha->dvr.eu.async.ionode = ha->hanum;
3647             ha->dvr.eu.async.status  = ha->status;
3648             /* severity and event_string already set! */
3649         } else {
3650             ha->dvr.size = sizeof(ha->dvr.eu.async);
3651             ha->dvr.eu.async.ionode   = ha->hanum;
3652             ha->dvr.eu.async.service = ha->service;
3653             ha->dvr.eu.async.status  = ha->status;
3654             ha->dvr.eu.async.info    = ha->info;
3655             *(ulong32 *)ha->dvr.eu.async.scsi_coord  = ha->info2;
3656         }
3657         gdth_store_event( ha, ES_ASYNC, ha->service, &ha->dvr );
3658         gdth_log_event( &ha->dvr, NULL );
3659
3660         /* new host drive from expand? */
3661         if (ha->service == CACHESERVICE && ha->status == 56) {
3662             TRACE2(("gdth_async_event(): new host drive %d created\n",
3663                     (ushort)ha->info));
3664             /* gdth_analyse_hdrive(hanum, (ushort)ha->info); */
3665         }
3666     }
3667     return 1;
3668 }
3669
3670 static void gdth_log_event(gdth_evt_data *dvr, char *buffer)
3671 {
3672     gdth_stackframe stack;
3673     char *f = NULL;
3674     int i,j;
3675
3676     TRACE2(("gdth_log_event()\n"));
3677     if (dvr->size == 0) {
3678         if (buffer == NULL) {
3679             printk("Adapter %d: %s\n",dvr->eu.async.ionode,dvr->event_string);
3680         } else {
3681             sprintf(buffer,"Adapter %d: %s\n",
3682                 dvr->eu.async.ionode,dvr->event_string);
3683         }
3684     } else if (dvr->eu.async.service == CACHESERVICE &&
3685         INDEX_OK(dvr->eu.async.status, async_cache_tab)) {
3686         TRACE2(("GDT: Async. event cache service, event no.: %d\n",
3687                 dvr->eu.async.status));
3688
3689         f = async_cache_tab[dvr->eu.async.status];
3690
3691         /* i: parameter to push, j: stack element to fill */
3692         for (j=0,i=1; i < f[0]; i+=2) {
3693             switch (f[i+1]) {
3694               case 4:
3695                 stack.b[j++] = *(ulong32*)&dvr->eu.stream[(int)f[i]];
3696                 break;
3697               case 2:
3698                 stack.b[j++] = *(ushort*)&dvr->eu.stream[(int)f[i]];
3699                 break;
3700               case 1:
3701                 stack.b[j++] = *(unchar*)&dvr->eu.stream[(int)f[i]];
3702                 break;
3703               default:
3704                 break;
3705             }
3706         }
3707
3708         if (buffer == NULL) {
3709             printk(&f[(int)f[0]],stack);
3710             printk("\n");
3711         } else {
3712             sprintf(buffer,&f[(int)f[0]],stack);
3713         }
3714
3715     } else {
3716         if (buffer == NULL) {
3717             printk("GDT HA %u, Unknown async. event service %d event no. %d\n",
3718                    dvr->eu.async.ionode,dvr->eu.async.service,dvr->eu.async.status);
3719         } else {
3720             sprintf(buffer,"GDT HA %u, Unknown async. event service %d event no. %d",
3721                     dvr->eu.async.ionode,dvr->eu.async.service,dvr->eu.async.status);
3722         }
3723     }
3724 }
3725
3726 #ifdef GDTH_STATISTICS
3727 static void gdth_timeout(ulong data)
3728 {
3729     ulong32 i;
3730     Scsi_Cmnd *nscp;
3731     gdth_ha_str *ha;
3732     ulong flags;
3733
3734     BUG_ON(list_empty(&gdth_instances));
3735
3736     ha = list_first_entry(&gdth_instances, gdth_ha_str, list);
3737     spin_lock_irqsave(&ha->smp_lock, flags);
3738
3739     for (act_stats=0,i=0; i<GDTH_MAXCMDS; ++i)
3740         if (ha->cmd_tab[i].cmnd != UNUSED_CMND)
3741             ++act_stats;
3742
3743     for (act_rq=0,nscp=ha->req_first; nscp; nscp=(Scsi_Cmnd*)nscp->SCp.ptr)
3744         ++act_rq;
3745
3746     TRACE2(("gdth_to(): ints %d, ios %d, act_stats %d, act_rq %d\n",
3747             act_ints, act_ios, act_stats, act_rq));
3748     act_ints = act_ios = 0;
3749
3750     gdth_timer.expires = jiffies + 30 * HZ;
3751     add_timer(&gdth_timer);
3752     spin_unlock_irqrestore(&ha->smp_lock, flags);
3753 }
3754 #endif
3755
3756 static void __init internal_setup(char *str,int *ints)
3757 {
3758     int i, argc;
3759     char *cur_str, *argv;
3760
3761     TRACE2(("internal_setup() str %s ints[0] %d\n",
3762             str ? str:"NULL", ints ? ints[0]:0));
3763
3764     /* read irq[] from ints[] */
3765     if (ints) {
3766         argc = ints[0];
3767         if (argc > 0) {
3768             if (argc > MAXHA)
3769                 argc = MAXHA;
3770             for (i = 0; i < argc; ++i)
3771                 irq[i] = ints[i+1];
3772         }
3773     }
3774
3775     /* analyse string */
3776     argv = str;
3777     while (argv && (cur_str = strchr(argv, ':'))) {
3778         int val = 0, c = *++cur_str;
3779
3780         if (c == 'n' || c == 'N')
3781             val = 0;
3782         else if (c == 'y' || c == 'Y')
3783             val = 1;
3784         else
3785             val = (int)simple_strtoul(cur_str, NULL, 0);
3786
3787         if (!strncmp(argv, "disable:", 8))
3788             disable = val;
3789         else if (!strncmp(argv, "reserve_mode:", 13))
3790             reserve_mode = val;
3791         else if (!strncmp(argv, "reverse_scan:", 13))
3792             reverse_scan = val;
3793         else if (!strncmp(argv, "hdr_channel:", 12))
3794             hdr_channel = val;
3795         else if (!strncmp(argv, "max_ids:", 8))
3796             max_ids = val;
3797         else if (!strncmp(argv, "rescan:", 7))
3798             rescan = val;
3799         else if (!strncmp(argv, "shared_access:", 14))
3800             shared_access = val;
3801         else if (!strncmp(argv, "probe_eisa_isa:", 15))
3802             probe_eisa_isa = val;
3803         else if (!strncmp(argv, "reserve_list:", 13)) {
3804             reserve_list[0] = val;
3805             for (i = 1; i < MAX_RES_ARGS; i++) {
3806                 cur_str = strchr(cur_str, ',');
3807                 if (!cur_str)
3808                     break;
3809                 if (!isdigit((int)*++cur_str)) {
3810                     --cur_str;
3811                     break;
3812                 }
3813                 reserve_list[i] =
3814                     (int)simple_strtoul(cur_str, NULL, 0);
3815             }
3816             if (!cur_str)
3817                 break;
3818             argv = ++cur_str;
3819             continue;
3820         }
3821
3822         if ((argv = strchr(argv, ',')))
3823             ++argv;
3824     }
3825 }
3826
3827 int __init option_setup(char *str)
3828 {
3829     int ints[MAXHA];
3830     char *cur = str;
3831     int i = 1;
3832
3833     TRACE2(("option_setup() str %s\n", str ? str:"NULL"));
3834
3835     while (cur && isdigit(*cur) && i <= MAXHA) {
3836         ints[i++] = simple_strtoul(cur, NULL, 0);
3837         if ((cur = strchr(cur, ',')) != NULL) cur++;
3838     }
3839
3840     ints[0] = i - 1;
3841     internal_setup(cur, ints);
3842     return 1;
3843 }
3844
3845 static const char *gdth_ctr_name(gdth_ha_str *ha)
3846 {
3847     TRACE2(("gdth_ctr_name()\n"));
3848
3849     if (ha->type == GDT_EISA) {
3850         switch (ha->stype) {
3851           case GDT3_ID:
3852             return("GDT3000/3020");
3853           case GDT3A_ID:
3854             return("GDT3000A/3020A/3050A");
3855           case GDT3B_ID:
3856             return("GDT3000B/3010A");
3857         }
3858     } else if (ha->type == GDT_ISA) {
3859         return("GDT2000/2020");
3860     } else if (ha->type == GDT_PCI) {
3861         switch (ha->pdev->device) {
3862           case PCI_DEVICE_ID_VORTEX_GDT60x0:
3863             return("GDT6000/6020/6050");
3864           case PCI_DEVICE_ID_VORTEX_GDT6000B:
3865             return("GDT6000B/6010");
3866         }
3867     }
3868     /* new controllers (GDT_PCINEW, GDT_PCIMPR, ..) use board_info IOCTL! */
3869
3870     return("");
3871 }
3872
3873 static const char *gdth_info(struct Scsi_Host *shp)
3874 {
3875     gdth_ha_str *ha = shost_priv(shp);
3876
3877     TRACE2(("gdth_info()\n"));
3878     return ((const char *)ha->binfo.type_string);
3879 }
3880
3881 static int gdth_eh_bus_reset(Scsi_Cmnd *scp)
3882 {
3883     gdth_ha_str *ha = shost_priv(scp->device->host);
3884     int i;
3885     ulong flags;
3886     Scsi_Cmnd *cmnd;
3887     unchar b;
3888
3889     TRACE2(("gdth_eh_bus_reset()\n"));
3890
3891     b = scp->device->channel;
3892
3893     /* clear command tab */
3894     spin_lock_irqsave(&ha->smp_lock, flags);
3895     for (i = 0; i < GDTH_MAXCMDS; ++i) {
3896         cmnd = ha->cmd_tab[i].cmnd;
3897         if (!SPECIAL_SCP(cmnd) && cmnd->device->channel == b)
3898             ha->cmd_tab[i].cmnd = UNUSED_CMND;
3899     }
3900     spin_unlock_irqrestore(&ha->smp_lock, flags);
3901
3902     if (b == ha->virt_bus) {
3903         /* host drives */
3904         for (i = 0; i < MAX_HDRIVES; ++i) {
3905             if (ha->hdr[i].present) {
3906                 spin_lock_irqsave(&ha->smp_lock, flags);
3907                 gdth_polling = TRUE;
3908                 while (gdth_test_busy(ha))
3909                     gdth_delay(0);
3910                 if (gdth_internal_cmd(ha, CACHESERVICE,
3911                                       GDT_CLUST_RESET, i, 0, 0))
3912                     ha->hdr[i].cluster_type &= ~CLUSTER_RESERVED;
3913                 gdth_polling = FALSE;
3914                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3915             }
3916         }
3917     } else {
3918         /* raw devices */
3919         spin_lock_irqsave(&ha->smp_lock, flags);
3920         for (i = 0; i < MAXID; ++i)
3921             ha->raw[BUS_L2P(ha,b)].io_cnt[i] = 0;
3922         gdth_polling = TRUE;
3923         while (gdth_test_busy(ha))
3924             gdth_delay(0);
3925         gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_RESET_BUS,
3926                           BUS_L2P(ha,b), 0, 0);
3927         gdth_polling = FALSE;
3928         spin_unlock_irqrestore(&ha->smp_lock, flags);
3929     }
3930     return SUCCESS;
3931 }
3932
3933 static int gdth_bios_param(struct scsi_device *sdev,struct block_device *bdev,sector_t cap,int *ip)
3934 {
3935     unchar b, t;
3936     gdth_ha_str *ha = shost_priv(sdev->host);
3937     struct scsi_device *sd;
3938     unsigned capacity;
3939
3940     sd = sdev;
3941     capacity = cap;
3942     b = sd->channel;
3943     t = sd->id;
3944     TRACE2(("gdth_bios_param() ha %d bus %d target %d\n", ha->hanum, b, t));
3945
3946     if (b != ha->virt_bus || ha->hdr[t].heads == 0) {
3947         /* raw device or host drive without mapping information */
3948         TRACE2(("Evaluate mapping\n"));
3949         gdth_eval_mapping(capacity,&ip[2],&ip[0],&ip[1]);
3950     } else {
3951         ip[0] = ha->hdr[t].heads;
3952         ip[1] = ha->hdr[t].secs;
3953         ip[2] = capacity / ip[0] / ip[1];
3954     }
3955
3956     TRACE2(("gdth_bios_param(): %d heads, %d secs, %d cyls\n",
3957             ip[0],ip[1],ip[2]));
3958     return 0;
3959 }
3960
3961
3962 static int gdth_queuecommand(struct scsi_cmnd *scp,
3963                                 void (*done)(struct scsi_cmnd *))
3964 {
3965     gdth_ha_str *ha = shost_priv(scp->device->host);
3966     struct gdth_cmndinfo *cmndinfo;
3967
3968     TRACE(("gdth_queuecommand() cmd 0x%x\n", scp->cmnd[0]));
3969
3970     cmndinfo = gdth_get_cmndinfo(ha);
3971     BUG_ON(!cmndinfo);
3972
3973     scp->scsi_done = done;
3974     gdth_update_timeout(scp, scp->timeout_per_command * 6);
3975     cmndinfo->priority = DEFAULT_PRI;
3976
3977     return __gdth_queuecommand(ha, scp, cmndinfo);
3978 }
3979
3980 static int __gdth_queuecommand(gdth_ha_str *ha, struct scsi_cmnd *scp,
3981                                 struct gdth_cmndinfo *cmndinfo)
3982 {
3983     scp->host_scribble = (unsigned char *)cmndinfo;
3984     cmndinfo->wait_for_completion = 1;
3985     cmndinfo->phase = -1;
3986     cmndinfo->OpCode = -1;
3987
3988 #ifdef GDTH_STATISTICS
3989     ++act_ios;
3990 #endif
3991
3992     gdth_putq(ha, scp, cmndinfo->priority);
3993     gdth_next(ha);
3994     return 0;
3995 }
3996
3997
3998 static int gdth_open(struct inode *inode, struct file *filep)
3999 {
4000     gdth_ha_str *ha;
4001
4002     list_for_each_entry(ha, &gdth_instances, list) {
4003         if (!ha->sdev)
4004             ha->sdev = scsi_get_host_dev(ha->shost);
4005     }
4006
4007     TRACE(("gdth_open()\n"));
4008     return 0;
4009 }
4010
4011 static int gdth_close(struct inode *inode, struct file *filep)
4012 {
4013     TRACE(("gdth_close()\n"));
4014     return 0;
4015 }
4016
4017 static int ioc_event(void __user *arg)
4018 {
4019     gdth_ioctl_event evt;
4020     gdth_ha_str *ha;
4021     ulong flags;
4022
4023     if (copy_from_user(&evt, arg, sizeof(gdth_ioctl_event)))
4024         return -EFAULT;
4025     ha = gdth_find_ha(evt.ionode);
4026     if (!ha)
4027         return -EFAULT;
4028
4029     if (evt.erase == 0xff) {
4030         if (evt.event.event_source == ES_TEST)
4031             evt.event.event_data.size=sizeof(evt.event.event_data.eu.test);
4032         else if (evt.event.event_source == ES_DRIVER)
4033             evt.event.event_data.size=sizeof(evt.event.event_data.eu.driver);
4034         else if (evt.event.event_source == ES_SYNC)
4035             evt.event.event_data.size=sizeof(evt.event.event_data.eu.sync);
4036         else
4037             evt.event.event_data.size=sizeof(evt.event.event_data.eu.async);
4038         spin_lock_irqsave(&ha->smp_lock, flags);
4039         gdth_store_event(ha, evt.event.event_source, evt.event.event_idx,
4040                          &evt.event.event_data);
4041         spin_unlock_irqrestore(&ha->smp_lock, flags);
4042     } else if (evt.erase == 0xfe) {
4043         gdth_clear_events();
4044     } else if (evt.erase == 0) {
4045         evt.handle = gdth_read_event(ha, evt.handle, &evt.event);
4046     } else {
4047         gdth_readapp_event(ha, evt.erase, &evt.event);
4048     }
4049     if (copy_to_user(arg, &evt, sizeof(gdth_ioctl_event)))
4050         return -EFAULT;
4051     return 0;
4052 }
4053
4054 static int ioc_lockdrv(void __user *arg)
4055 {
4056     gdth_ioctl_lockdrv ldrv;
4057     unchar i, j;
4058     ulong flags;
4059     gdth_ha_str *ha;
4060
4061     if (copy_from_user(&ldrv, arg, sizeof(gdth_ioctl_lockdrv)))
4062         return -EFAULT;
4063     ha = gdth_find_ha(ldrv.ionode);
4064     if (!ha)
4065         return -EFAULT;
4066
4067     for (i = 0; i < ldrv.drive_cnt && i < MAX_HDRIVES; ++i) {
4068         j = ldrv.drives[i];
4069         if (j >= MAX_HDRIVES || !ha->hdr[j].present)
4070             continue;
4071         if (ldrv.lock) {
4072             spin_lock_irqsave(&ha->smp_lock, flags);
4073             ha->hdr[j].lock = 1;
4074             spin_unlock_irqrestore(&ha->smp_lock, flags);
4075             gdth_wait_completion(ha, ha->bus_cnt, j);
4076             gdth_stop_timeout(ha, ha->bus_cnt, j);
4077         } else {
4078             spin_lock_irqsave(&ha->smp_lock, flags);
4079             ha->hdr[j].lock = 0;
4080             spin_unlock_irqrestore(&ha->smp_lock, flags);
4081             gdth_start_timeout(ha, ha->bus_cnt, j);
4082             gdth_next(ha);
4083         }
4084     }
4085     return 0;
4086 }
4087
4088 static int ioc_resetdrv(void __user *arg, char *cmnd)
4089 {
4090     gdth_ioctl_reset res;
4091     gdth_cmd_str cmd;
4092     gdth_ha_str *ha;
4093     int rval;
4094
4095     if (copy_from_user(&res, arg, sizeof(gdth_ioctl_reset)) ||
4096         res.number >= MAX_HDRIVES)
4097         return -EFAULT;
4098     ha = gdth_find_ha(res.ionode);
4099     if (!ha)
4100         return -EFAULT;
4101
4102     if (!ha->hdr[res.number].present)
4103         return 0;
4104     memset(&cmd, 0, sizeof(gdth_cmd_str));
4105     cmd.Service = CACHESERVICE;
4106     cmd.OpCode = GDT_CLUST_RESET;
4107     if (ha->cache_feat & GDT_64BIT)
4108         cmd.u.cache64.DeviceNo = res.number;
4109     else
4110         cmd.u.cache.DeviceNo = res.number;
4111
4112     rval = __gdth_execute(ha->sdev, &cmd, cmnd, 30, NULL);
4113     if (rval < 0)
4114         return rval;
4115     res.status = rval;
4116
4117     if (copy_to_user(arg, &res, sizeof(gdth_ioctl_reset)))
4118         return -EFAULT;
4119     return 0;
4120 }
4121
4122 static int ioc_general(void __user *arg, char *cmnd)
4123 {
4124     gdth_ioctl_general gen;
4125     char *buf = NULL;
4126     ulong64 paddr;
4127     gdth_ha_str *ha;
4128     int rval;
4129
4130     if (copy_from_user(&gen, arg, sizeof(gdth_ioctl_general)))
4131         return -EFAULT;
4132     ha = gdth_find_ha(gen.ionode);
4133     if (!ha)
4134         return -EFAULT;
4135     if (gen.data_len + gen.sense_len != 0) {
4136         if (!(buf = gdth_ioctl_alloc(ha, gen.data_len + gen.sense_len,
4137                                      FALSE, &paddr)))
4138             return -EFAULT;
4139         if (copy_from_user(buf, arg + sizeof(gdth_ioctl_general),
4140                            gen.data_len + gen.sense_len)) {
4141             gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
4142             return -EFAULT;
4143         }
4144
4145         if (gen.command.OpCode == GDT_IOCTL) {
4146             gen.command.u.ioctl.p_param = paddr;
4147         } else if (gen.command.Service == CACHESERVICE) {
4148             if (ha->cache_feat & GDT_64BIT) {
4149                 /* copy elements from 32-bit IOCTL structure */
4150                 gen.command.u.cache64.BlockCnt = gen.command.u.cache.BlockCnt;
4151                 gen.command.u.cache64.BlockNo = gen.command.u.cache.BlockNo;
4152                 gen.command.u.cache64.DeviceNo = gen.command.u.cache.DeviceNo;
4153                 /* addresses */
4154                 if (ha->cache_feat & SCATTER_GATHER) {
4155                     gen.command.u.cache64.DestAddr = (ulong64)-1;
4156                     gen.command.u.cache64.sg_canz = 1;
4157                     gen.command.u.cache64.sg_lst[0].sg_ptr = paddr;
4158                     gen.command.u.cache64.sg_lst[0].sg_len = gen.data_len;
4159                     gen.command.u.cache64.sg_lst[1].sg_len = 0;
4160                 } else {
4161                     gen.command.u.cache64.DestAddr = paddr;
4162                     gen.command.u.cache64.sg_canz = 0;
4163                 }
4164             } else {
4165                 if (ha->cache_feat & SCATTER_GATHER) {
4166                     gen.command.u.cache.DestAddr = 0xffffffff;
4167                     gen.command.u.cache.sg_canz = 1;
4168                     gen.command.u.cache.sg_lst[0].sg_ptr = (ulong32)paddr;
4169                     gen.command.u.cache.sg_lst[0].sg_len = gen.data_len;
4170                     gen.command.u.cache.sg_lst[1].sg_len = 0;
4171                 } else {
4172                     gen.command.u.cache.DestAddr = paddr;
4173                     gen.command.u.cache.sg_canz = 0;
4174                 }
4175             }
4176         } else if (gen.command.Service == SCSIRAWSERVICE) {
4177             if (ha->raw_feat & GDT_64BIT) {
4178                 /* copy elements from 32-bit IOCTL structure */
4179                 char cmd[16];
4180                 gen.command.u.raw64.sense_len = gen.command.u.raw.sense_len;
4181                 gen.command.u.raw64.bus = gen.command.u.raw.bus;
4182                 gen.command.u.raw64.lun = gen.command.u.raw.lun;
4183                 gen.command.u.raw64.target = gen.command.u.raw.target;
4184                 memcpy(cmd, gen.command.u.raw.cmd, 16);
4185                 memcpy(gen.command.u.raw64.cmd, cmd, 16);
4186                 gen.command.u.raw64.clen = gen.command.u.raw.clen;
4187                 gen.command.u.raw64.sdlen = gen.command.u.raw.sdlen;
4188                 gen.command.u.raw64.direction = gen.command.u.raw.direction;
4189                 /* addresses */
4190                 if (ha->raw_feat & SCATTER_GATHER) {
4191                     gen.command.u.raw64.sdata = (ulong64)-1;
4192                     gen.command.u.raw64.sg_ranz = 1;
4193                     gen.command.u.raw64.sg_lst[0].sg_ptr = paddr;
4194                     gen.command.u.raw64.sg_lst[0].sg_len = gen.data_len;
4195                     gen.command.u.raw64.sg_lst[1].sg_len = 0;
4196                 } else {
4197                     gen.command.u.raw64.sdata = paddr;
4198                     gen.command.u.raw64.sg_ranz = 0;
4199                 }
4200                 gen.command.u.raw64.sense_data = paddr + gen.data_len;
4201             } else {
4202                 if (ha->raw_feat & SCATTER_GATHER) {
4203                     gen.command.u.raw.sdata = 0xffffffff;
4204                     gen.command.u.raw.sg_ranz = 1;
4205                     gen.command.u.raw.sg_lst[0].sg_ptr = (ulong32)paddr;
4206                     gen.command.u.raw.sg_lst[0].sg_len = gen.data_len;
4207                     gen.command.u.raw.sg_lst[1].sg_len = 0;
4208                 } else {
4209                     gen.command.u.raw.sdata = paddr;
4210                     gen.command.u.raw.sg_ranz = 0;
4211                 }
4212                 gen.command.u.raw.sense_data = (ulong32)paddr + gen.data_len;
4213             }
4214         } else {
4215             gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
4216             return -EFAULT;
4217         }
4218     }
4219
4220     rval = __gdth_execute(ha->sdev, &gen.command, cmnd, gen.timeout, &gen.info);
4221     if (rval < 0)
4222         return rval;
4223     gen.status = rval;
4224
4225     if (copy_to_user(arg + sizeof(gdth_ioctl_general), buf,
4226                      gen.data_len + gen.sense_len)) {
4227         gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
4228         return -EFAULT;
4229     }
4230     if (copy_to_user(arg, &gen,
4231         sizeof(gdth_ioctl_general) - sizeof(gdth_cmd_str))) {
4232         gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
4233         return -EFAULT;
4234     }
4235     gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
4236     return 0;
4237 }
4238
4239 static int ioc_hdrlist(void __user *arg, char *cmnd)
4240 {
4241     gdth_ioctl_rescan *rsc;
4242     gdth_cmd_str *cmd;
4243     gdth_ha_str *ha;
4244     unchar i;
4245     int rc = -ENOMEM;
4246     u32 cluster_type = 0;
4247
4248     rsc = kmalloc(sizeof(*rsc), GFP_KERNEL);
4249     cmd = kmalloc(sizeof(*cmd), GFP_KERNEL);
4250     if (!rsc || !cmd)
4251         goto free_fail;
4252
4253     if (copy_from_user(rsc, arg, sizeof(gdth_ioctl_rescan)) ||
4254         (NULL == (ha = gdth_find_ha(rsc->ionode)))) {
4255         rc = -EFAULT;
4256         goto free_fail;
4257     }
4258     memset(cmd, 0, sizeof(gdth_cmd_str));
4259
4260     for (i = 0; i < MAX_HDRIVES; ++i) {
4261         if (!ha->hdr[i].present) {
4262             rsc->hdr_list[i].bus = 0xff;
4263             continue;
4264         }
4265         rsc->hdr_list[i].bus = ha->virt_bus;
4266         rsc->hdr_list[i].target = i;
4267         rsc->hdr_list[i].lun = 0;
4268         rsc->hdr_list[i].cluster_type = ha->hdr[i].cluster_type;
4269         if (ha->hdr[i].cluster_type & CLUSTER_DRIVE) {
4270             cmd->Service = CACHESERVICE;
4271             cmd->OpCode = GDT_CLUST_INFO;
4272             if (ha->cache_feat & GDT_64BIT)
4273                 cmd->u.cache64.DeviceNo = i;
4274             else
4275                 cmd->u.cache.DeviceNo = i;
4276             if (__gdth_execute(ha->sdev, cmd, cmnd, 30, &cluster_type) == S_OK)
4277                 rsc->hdr_list[i].cluster_type = cluster_type;
4278         }
4279     }
4280
4281     if (copy_to_user(arg, rsc, sizeof(gdth_ioctl_rescan)))
4282         rc = -EFAULT;
4283     else
4284         rc = 0;
4285
4286 free_fail:
4287     kfree(rsc);
4288     kfree(cmd);
4289     return rc;
4290 }
4291
4292 static int ioc_rescan(void __user *arg, char *cmnd)
4293 {
4294     gdth_ioctl_rescan *rsc;
4295     gdth_cmd_str *cmd;
4296     ushort i, status, hdr_cnt;
4297     ulong32 info;
4298     int cyls, hds, secs;
4299     int rc = -ENOMEM;
4300     ulong flags;
4301     gdth_ha_str *ha;
4302
4303     rsc = kmalloc(sizeof(*rsc), GFP_KERNEL);
4304     cmd = kmalloc(sizeof(*cmd), GFP_KERNEL);
4305     if (!cmd || !rsc)
4306         goto free_fail;
4307
4308     if (copy_from_user(rsc, arg, sizeof(gdth_ioctl_rescan)) ||
4309         (NULL == (ha = gdth_find_ha(rsc->ionode)))) {
4310         rc = -EFAULT;
4311         goto free_fail;
4312     }
4313     memset(cmd, 0, sizeof(gdth_cmd_str));
4314
4315     if (rsc->flag == 0) {
4316         /* old method: re-init. cache service */
4317         cmd->Service = CACHESERVICE;
4318         if (ha->cache_feat & GDT_64BIT) {
4319             cmd->OpCode = GDT_X_INIT_HOST;
4320             cmd->u.cache64.DeviceNo = LINUX_OS;
4321         } else {
4322             cmd->OpCode = GDT_INIT;
4323             cmd->u.cache.DeviceNo = LINUX_OS;
4324         }
4325
4326         status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
4327         i = 0;
4328         hdr_cnt = (status == S_OK ? (ushort)info : 0);
4329     } else {
4330         i = rsc->hdr_no;
4331         hdr_cnt = i + 1;
4332     }
4333
4334     for (; i < hdr_cnt && i < MAX_HDRIVES; ++i) {
4335         cmd->Service = CACHESERVICE;
4336         cmd->OpCode = GDT_INFO;
4337         if (ha->cache_feat & GDT_64BIT)
4338             cmd->u.cache64.DeviceNo = i;
4339         else
4340             cmd->u.cache.DeviceNo = i;
4341
4342         status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
4343
4344         spin_lock_irqsave(&ha->smp_lock, flags);
4345         rsc->hdr_list[i].bus = ha->virt_bus;
4346         rsc->hdr_list[i].target = i;
4347         rsc->hdr_list[i].lun = 0;
4348         if (status != S_OK) {
4349             ha->hdr[i].present = FALSE;
4350         } else {
4351             ha->hdr[i].present = TRUE;
4352             ha->hdr[i].size = info;
4353             /* evaluate mapping */
4354             ha->hdr[i].size &= ~SECS32;
4355             gdth_eval_mapping(ha->hdr[i].size,&cyls,&hds,&secs);
4356             ha->hdr[i].heads = hds;
4357             ha->hdr[i].secs = secs;
4358             /* round size */
4359             ha->hdr[i].size = cyls * hds * secs;
4360         }
4361         spin_unlock_irqrestore(&ha->smp_lock, flags);
4362         if (status != S_OK)
4363             continue;
4364
4365         /* extended info, if GDT_64BIT, for drives > 2 TB */
4366         /* but we need ha->info2, not yet stored in scp->SCp */
4367
4368         /* devtype, cluster info, R/W attribs */
4369         cmd->Service = CACHESERVICE;
4370         cmd->OpCode = GDT_DEVTYPE;
4371         if (ha->cache_feat & GDT_64BIT)
4372             cmd->u.cache64.DeviceNo = i;
4373         else
4374             cmd->u.cache.DeviceNo = i;
4375
4376         status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
4377
4378         spin_lock_irqsave(&ha->smp_lock, flags);
4379         ha->hdr[i].devtype = (status == S_OK ? (ushort)info : 0);
4380         spin_unlock_irqrestore(&ha->smp_lock, flags);
4381
4382         cmd->Service = CACHESERVICE;
4383         cmd->OpCode = GDT_CLUST_INFO;
4384         if (ha->cache_feat & GDT_64BIT)
4385             cmd->u.cache64.DeviceNo = i;
4386         else
4387             cmd->u.cache.DeviceNo = i;
4388
4389         status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
4390
4391         spin_lock_irqsave(&ha->smp_lock, flags);
4392         ha->hdr[i].cluster_type =
4393             ((status == S_OK && !shared_access) ? (ushort)info : 0);
4394         spin_unlock_irqrestore(&ha->smp_lock, flags);
4395         rsc->hdr_list[i].cluster_type = ha->hdr[i].cluster_type;
4396
4397         cmd->Service = CACHESERVICE;
4398         cmd->OpCode = GDT_RW_ATTRIBS;
4399         if (ha->cache_feat & GDT_64BIT)
4400             cmd->u.cache64.DeviceNo = i;
4401         else
4402             cmd->u.cache.DeviceNo = i;
4403
4404         status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
4405
4406         spin_lock_irqsave(&ha->smp_lock, flags);
4407         ha->hdr[i].rw_attribs = (status == S_OK ? (ushort)info : 0);
4408         spin_unlock_irqrestore(&ha->smp_lock, flags);
4409     }
4410
4411     if (copy_to_user(arg, rsc, sizeof(gdth_ioctl_rescan)))
4412         rc = -EFAULT;
4413     else
4414         rc = 0;
4415
4416 free_fail:
4417     kfree(rsc);
4418     kfree(cmd);
4419     return rc;
4420 }
4421
4422 static int gdth_ioctl(struct inode *inode, struct file *filep,
4423                       unsigned int cmd, unsigned long arg)
4424 {
4425     gdth_ha_str *ha;
4426     Scsi_Cmnd *scp;
4427     ulong flags;
4428     char cmnd[MAX_COMMAND_SIZE];
4429     void __user *argp = (void __user *)arg;
4430
4431     memset(cmnd, 0xff, 12);
4432
4433     TRACE(("gdth_ioctl() cmd 0x%x\n", cmd));
4434
4435     switch (cmd) {
4436       case GDTIOCTL_CTRCNT:
4437       {
4438         int cnt = gdth_ctr_count;
4439         if (put_user(cnt, (int __user *)argp))
4440                 return -EFAULT;
4441         break;
4442       }
4443
4444       case GDTIOCTL_DRVERS:
4445       {
4446         int ver = (GDTH_VERSION<<8) | GDTH_SUBVERSION;
4447         if (put_user(ver, (int __user *)argp))
4448                 return -EFAULT;
4449         break;
4450       }
4451
4452       case GDTIOCTL_OSVERS:
4453       {
4454         gdth_ioctl_osvers osv;
4455
4456         osv.version = (unchar)(LINUX_VERSION_CODE >> 16);
4457         osv.subversion = (unchar)(LINUX_VERSION_CODE >> 8);
4458         osv.revision = (ushort)(LINUX_VERSION_CODE & 0xff);
4459         if (copy_to_user(argp, &osv, sizeof(gdth_ioctl_osvers)))
4460                 return -EFAULT;
4461         break;
4462       }
4463
4464       case GDTIOCTL_CTRTYPE:
4465       {
4466         gdth_ioctl_ctrtype ctrt;
4467
4468         if (copy_from_user(&ctrt, argp, sizeof(gdth_ioctl_ctrtype)) ||
4469             (NULL == (ha = gdth_find_ha(ctrt.ionode))))
4470             return -EFAULT;
4471
4472         if (ha->type == GDT_ISA || ha->type == GDT_EISA) {
4473             ctrt.type = (unchar)((ha->stype>>20) - 0x10);
4474         } else {
4475             if (ha->type != GDT_PCIMPR) {
4476                 ctrt.type = (unchar)((ha->stype<<4) + 6);
4477             } else {
4478                 ctrt.type =
4479                     (ha->oem_id == OEM_ID_INTEL ? 0xfd : 0xfe);
4480                 if (ha->stype >= 0x300)
4481                     ctrt.ext_type = 0x6000 | ha->pdev->subsystem_device;
4482                 else
4483                     ctrt.ext_type = 0x6000 | ha->stype;
4484             }
4485             ctrt.device_id = ha->pdev->device;
4486             ctrt.sub_device_id = ha->pdev->subsystem_device;
4487         }
4488         ctrt.info = ha->brd_phys;
4489         ctrt.oem_id = ha->oem_id;
4490         if (copy_to_user(argp, &ctrt, sizeof(gdth_ioctl_ctrtype)))
4491             return -EFAULT;
4492         break;
4493       }
4494
4495       case GDTIOCTL_GENERAL:
4496         return ioc_general(argp, cmnd);
4497
4498       case GDTIOCTL_EVENT:
4499         return ioc_event(argp);
4500
4501       case GDTIOCTL_LOCKDRV:
4502         return ioc_lockdrv(argp);
4503
4504       case GDTIOCTL_LOCKCHN:
4505       {
4506         gdth_ioctl_lockchn lchn;
4507         unchar i, j;
4508
4509         if (copy_from_user(&lchn, argp, sizeof(gdth_ioctl_lockchn)) ||
4510             (NULL == (ha = gdth_find_ha(lchn.ionode))))
4511             return -EFAULT;
4512
4513         i = lchn.channel;
4514         if (i < ha->bus_cnt) {
4515             if (lchn.lock) {
4516                 spin_lock_irqsave(&ha->smp_lock, flags);
4517                 ha->raw[i].lock = 1;
4518                 spin_unlock_irqrestore(&ha->smp_lock, flags);
4519                 for (j = 0; j < ha->tid_cnt; ++j) {
4520                     gdth_wait_completion(ha, i, j);
4521                     gdth_stop_timeout(ha, i, j);
4522                 }
4523             } else {
4524                 spin_lock_irqsave(&ha->smp_lock, flags);
4525                 ha->raw[i].lock = 0;
4526                 spin_unlock_irqrestore(&ha->smp_lock, flags);
4527                 for (j = 0; j < ha->tid_cnt; ++j) {
4528                     gdth_start_timeout(ha, i, j);
4529                     gdth_next(ha);
4530                 }
4531             }
4532         }
4533         break;
4534       }
4535
4536       case GDTIOCTL_RESCAN:
4537         return ioc_rescan(argp, cmnd);
4538
4539       case GDTIOCTL_HDRLIST:
4540         return ioc_hdrlist(argp, cmnd);
4541
4542       case GDTIOCTL_RESET_BUS:
4543       {
4544         gdth_ioctl_reset res;
4545         int rval;
4546
4547         if (copy_from_user(&res, argp, sizeof(gdth_ioctl_reset)) ||
4548             (NULL == (ha = gdth_find_ha(res.ionode))))
4549             return -EFAULT;
4550
4551         scp  = kzalloc(sizeof(*scp), GFP_KERNEL);
4552         if (!scp)
4553             return -ENOMEM;
4554         scp->device = ha->sdev;
4555         scp->cmd_len = 12;
4556         scp->device->channel = res.number;
4557         rval = gdth_eh_bus_reset(scp);
4558         res.status = (rval == SUCCESS ? S_OK : S_GENERR);
4559         kfree(scp);
4560
4561         if (copy_to_user(argp, &res, sizeof(gdth_ioctl_reset)))
4562             return -EFAULT;
4563         break;
4564       }
4565
4566       case GDTIOCTL_RESET_DRV:
4567         return ioc_resetdrv(argp, cmnd);
4568
4569       default:
4570         break;
4571     }
4572     return 0;
4573 }
4574
4575
4576 /* flush routine */
4577 static void gdth_flush(gdth_ha_str *ha)
4578 {
4579     int             i;
4580     gdth_cmd_str    gdtcmd;
4581     char            cmnd[MAX_COMMAND_SIZE];
4582     memset(cmnd, 0xff, MAX_COMMAND_SIZE);
4583
4584     TRACE2(("gdth_flush() hanum %d\n", ha->hanum));
4585
4586     for (i = 0; i < MAX_HDRIVES; ++i) {
4587         if (ha->hdr[i].present) {
4588             gdtcmd.BoardNode = LOCALBOARD;
4589             gdtcmd.Service = CACHESERVICE;
4590             gdtcmd.OpCode = GDT_FLUSH;
4591             if (ha->cache_feat & GDT_64BIT) {
4592                 gdtcmd.u.cache64.DeviceNo = i;
4593                 gdtcmd.u.cache64.BlockNo = 1;
4594                 gdtcmd.u.cache64.sg_canz = 0;
4595             } else {
4596                 gdtcmd.u.cache.DeviceNo = i;
4597                 gdtcmd.u.cache.BlockNo = 1;
4598                 gdtcmd.u.cache.sg_canz = 0;
4599             }
4600             TRACE2(("gdth_flush(): flush ha %d drive %d\n", ha->hanum, i));
4601
4602             gdth_execute(ha->shost, &gdtcmd, cmnd, 30, NULL);
4603         }
4604     }
4605 }
4606
4607 /* configure lun */
4608 static int gdth_slave_configure(struct scsi_device *sdev)
4609 {
4610     scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
4611     sdev->skip_ms_page_3f = 1;
4612     sdev->skip_ms_page_8 = 1;
4613     return 0;
4614 }
4615
4616 static struct scsi_host_template gdth_template = {
4617         .name                   = "GDT SCSI Disk Array Controller",
4618         .info                   = gdth_info,
4619         .queuecommand           = gdth_queuecommand,
4620         .eh_bus_reset_handler   = gdth_eh_bus_reset,
4621         .slave_configure        = gdth_slave_configure,
4622         .bios_param             = gdth_bios_param,
4623         .proc_info              = gdth_proc_info,
4624         .proc_name              = "gdth",
4625         .can_queue              = GDTH_MAXCMDS,
4626         .this_id                = -1,
4627         .sg_tablesize           = GDTH_MAXSG,
4628         .cmd_per_lun            = GDTH_MAXC_P_L,
4629         .unchecked_isa_dma      = 1,
4630         .use_clustering         = ENABLE_CLUSTERING,
4631 };
4632
4633 #ifdef CONFIG_ISA
4634 static int __init gdth_isa_probe_one(ulong32 isa_bios)
4635 {
4636         struct Scsi_Host *shp;
4637         gdth_ha_str *ha;
4638         dma_addr_t scratch_dma_handle = 0;
4639         int error, i;
4640
4641         if (!gdth_search_isa(isa_bios))
4642                 return -ENXIO;
4643
4644         shp = scsi_host_alloc(&gdth_template, sizeof(gdth_ha_str));
4645         if (!shp)
4646                 return -ENOMEM;
4647         ha = shost_priv(shp);
4648
4649         error = -ENODEV;
4650         if (!gdth_init_isa(isa_bios,ha))
4651                 goto out_host_put;
4652
4653         /* controller found and initialized */
4654         printk("Configuring GDT-ISA HA at BIOS 0x%05X IRQ %u DRQ %u\n",
4655                 isa_bios, ha->irq, ha->drq);
4656
4657         error = request_irq(ha->irq, gdth_interrupt, IRQF_DISABLED, "gdth", ha);
4658         if (error) {
4659                 printk("GDT-ISA: Unable to allocate IRQ\n");
4660                 goto out_host_put;
4661         }
4662
4663         error = request_dma(ha->drq, "gdth");
4664         if (error) {
4665                 printk("GDT-ISA: Unable to allocate DMA channel\n");
4666                 goto out_free_irq;
4667         }
4668
4669         set_dma_mode(ha->drq,DMA_MODE_CASCADE);
4670         enable_dma(ha->drq);
4671         shp->unchecked_isa_dma = 1;
4672         shp->irq = ha->irq;
4673         shp->dma_channel = ha->drq;
4674
4675         ha->hanum = gdth_ctr_count++;
4676         ha->shost = shp;
4677
4678         ha->pccb = &ha->cmdext;
4679         ha->ccb_phys = 0L;
4680         ha->pdev = NULL;
4681
4682         error = -ENOMEM;
4683
4684         ha->pscratch = pci_alloc_consistent(ha->pdev, GDTH_SCRATCH,
4685                                                 &scratch_dma_handle);
4686         if (!ha->pscratch)
4687                 goto out_dec_counters;
4688         ha->scratch_phys = scratch_dma_handle;
4689
4690         ha->pmsg = pci_alloc_consistent(ha->pdev, sizeof(gdth_msg_str),
4691                                                 &scratch_dma_handle);
4692         if (!ha->pmsg)
4693                 goto out_free_pscratch;
4694         ha->msg_phys = scratch_dma_handle;
4695
4696 #ifdef INT_COAL
4697         ha->coal_stat = pci_alloc_consistent(ha->pdev,
4698                                 sizeof(gdth_coal_status) * MAXOFFSETS,
4699                                 &scratch_dma_handle);
4700         if (!ha->coal_stat)
4701                 goto out_free_pmsg;
4702         ha->coal_stat_phys = scratch_dma_handle;
4703 #endif
4704
4705         ha->scratch_busy = FALSE;
4706         ha->req_first = NULL;
4707         ha->tid_cnt = MAX_HDRIVES;
4708         if (max_ids > 0 && max_ids < ha->tid_cnt)
4709                 ha->tid_cnt = max_ids;
4710         for (i = 0; i < GDTH_MAXCMDS; ++i)
4711                 ha->cmd_tab[i].cmnd = UNUSED_CMND;
4712         ha->scan_mode = rescan ? 0x10 : 0;
4713
4714         error = -ENODEV;
4715         if (!gdth_search_drives(ha)) {
4716                 printk("GDT-ISA: Error during device scan\n");
4717                 goto out_free_coal_stat;
4718         }
4719
4720         if (hdr_channel < 0 || hdr_channel > ha->bus_cnt)
4721                 hdr_channel = ha->bus_cnt;
4722         ha->virt_bus = hdr_channel;
4723
4724         if (ha->cache_feat & ha->raw_feat & ha->screen_feat & GDT_64BIT)
4725                 shp->max_cmd_len = 16;
4726
4727         shp->max_id      = ha->tid_cnt;
4728         shp->max_lun     = MAXLUN;
4729         shp->max_channel = ha->bus_cnt;
4730
4731         spin_lock_init(&ha->smp_lock);
4732         gdth_enable_int(ha);
4733
4734         error = scsi_add_host(shp, NULL);
4735         if (error)
4736                 goto out_free_coal_stat;
4737         list_add_tail(&ha->list, &gdth_instances);
4738
4739         scsi_scan_host(shp);
4740
4741         return 0;
4742
4743  out_free_coal_stat:
4744 #ifdef INT_COAL
4745         pci_free_consistent(ha->pdev, sizeof(gdth_coal_status) * MAXOFFSETS,
4746                                 ha->coal_stat, ha->coal_stat_phys);
4747  out_free_pmsg:
4748 #endif
4749         pci_free_consistent(ha->pdev, sizeof(gdth_msg_str),
4750                                 ha->pmsg, ha->msg_phys);
4751  out_free_pscratch:
4752         pci_free_consistent(ha->pdev, GDTH_SCRATCH,
4753                                 ha->pscratch, ha->scratch_phys);
4754  out_dec_counters:
4755         gdth_ctr_count--;
4756  out_free_irq:
4757         free_irq(ha->irq, ha);
4758  out_host_put:
4759         scsi_host_put(shp);
4760         return error;
4761 }
4762 #endif /* CONFIG_ISA */
4763
4764 #ifdef CONFIG_EISA
4765 static int __init gdth_eisa_probe_one(ushort eisa_slot)
4766 {
4767         struct Scsi_Host *shp;
4768         gdth_ha_str *ha;
4769         dma_addr_t scratch_dma_handle = 0;
4770         int error, i;
4771
4772         if (!gdth_search_eisa(eisa_slot))
4773                 return -ENXIO;
4774
4775         shp = scsi_host_alloc(&gdth_template, sizeof(gdth_ha_str));
4776         if (!shp)
4777                 return -ENOMEM;
4778         ha = shost_priv(shp);
4779
4780         error = -ENODEV;
4781         if (!gdth_init_eisa(eisa_slot,ha))
4782                 goto out_host_put;
4783
4784         /* controller found and initialized */
4785         printk("Configuring GDT-EISA HA at Slot %d IRQ %u\n",
4786                 eisa_slot >> 12, ha->irq);
4787
4788         error = request_irq(ha->irq, gdth_interrupt, IRQF_DISABLED, "gdth", ha);
4789         if (error) {
4790                 printk("GDT-EISA: Unable to allocate IRQ\n");
4791                 goto out_host_put;
4792         }
4793
4794         shp->unchecked_isa_dma = 0;
4795         shp->irq = ha->irq;
4796         shp->dma_channel = 0xff;
4797
4798         ha->hanum = gdth_ctr_count++;
4799         ha->shost = shp;
4800
4801         TRACE2(("EISA detect Bus 0: hanum %d\n", ha->hanum));
4802
4803         ha->pccb = &ha->cmdext;
4804         ha->ccb_phys = 0L;
4805
4806         error = -ENOMEM;
4807
4808         ha->pdev = NULL;
4809         ha->pscratch = pci_alloc_consistent(ha->pdev, GDTH_SCRATCH,
4810                                                 &scratch_dma_handle);
4811         if (!ha->pscratch)
4812                 goto out_free_irq;
4813         ha->scratch_phys = scratch_dma_handle;
4814
4815         ha->pmsg = pci_alloc_consistent(ha->pdev, sizeof(gdth_msg_str),
4816                                                 &scratch_dma_handle);
4817         if (!ha->pmsg)
4818                 goto out_free_pscratch;
4819         ha->msg_phys = scratch_dma_handle;
4820
4821 #ifdef INT_COAL
4822         ha->coal_stat = pci_alloc_consistent(ha->pdev,
4823                         sizeof(gdth_coal_status) * MAXOFFSETS,
4824                         &scratch_dma_handle);
4825         if (!ha->coal_stat)
4826                 goto out_free_pmsg;
4827         ha->coal_stat_phys = scratch_dma_handle;
4828 #endif
4829
4830         ha->ccb_phys = pci_map_single(ha->pdev,ha->pccb,
4831                         sizeof(gdth_cmd_str), PCI_DMA_BIDIRECTIONAL);
4832         if (!ha->ccb_phys)
4833                 goto out_free_coal_stat;
4834
4835         ha->scratch_busy = FALSE;
4836         ha->req_first = NULL;
4837         ha->tid_cnt = MAX_HDRIVES;
4838         if (max_ids > 0 && max_ids < ha->tid_cnt)
4839                 ha->tid_cnt = max_ids;
4840         for (i = 0; i < GDTH_MAXCMDS; ++i)
4841                 ha->cmd_tab[i].cmnd = UNUSED_CMND;
4842         ha->scan_mode = rescan ? 0x10 : 0;
4843
4844         if (!gdth_search_drives(ha)) {
4845                 printk("GDT-EISA: Error during device scan\n");
4846                 error = -ENODEV;
4847                 goto out_free_ccb_phys;
4848         }
4849
4850         if (hdr_channel < 0 || hdr_channel > ha->bus_cnt)
4851                 hdr_channel = ha->bus_cnt;
4852         ha->virt_bus = hdr_channel;
4853
4854         if (ha->cache_feat & ha->raw_feat & ha->screen_feat & GDT_64BIT)
4855                 shp->max_cmd_len = 16;
4856
4857         shp->max_id      = ha->tid_cnt;
4858         shp->max_lun     = MAXLUN;
4859         shp->max_channel = ha->bus_cnt;
4860
4861         spin_lock_init(&ha->smp_lock);
4862         gdth_enable_int(ha);
4863
4864         error = scsi_add_host(shp, NULL);
4865         if (error)
4866                 goto out_free_coal_stat;
4867         list_add_tail(&ha->list, &gdth_instances);
4868
4869         scsi_scan_host(shp);
4870
4871         return 0;
4872
4873  out_free_ccb_phys:
4874         pci_unmap_single(ha->pdev,ha->ccb_phys, sizeof(gdth_cmd_str),
4875                         PCI_DMA_BIDIRECTIONAL);
4876  out_free_coal_stat:
4877 #ifdef INT_COAL
4878         pci_free_consistent(ha->pdev, sizeof(gdth_coal_status) * MAXOFFSETS,
4879                                 ha->coal_stat, ha->coal_stat_phys);
4880  out_free_pmsg:
4881 #endif
4882         pci_free_consistent(ha->pdev, sizeof(gdth_msg_str),
4883                                 ha->pmsg, ha->msg_phys);
4884  out_free_pscratch:
4885         pci_free_consistent(ha->pdev, GDTH_SCRATCH,
4886                                 ha->pscratch, ha->scratch_phys);
4887  out_free_irq:
4888         free_irq(ha->irq, ha);
4889         gdth_ctr_count--;
4890  out_host_put:
4891         scsi_host_put(shp);
4892         return error;
4893 }
4894 #endif /* CONFIG_EISA */
4895
4896 #ifdef CONFIG_PCI
4897 static int gdth_pci_probe_one(gdth_pci_str *pcistr,
4898                              gdth_ha_str **ha_out)
4899 {
4900         struct Scsi_Host *shp;
4901         gdth_ha_str *ha;
4902         dma_addr_t scratch_dma_handle = 0;
4903         int error, i;
4904         struct pci_dev *pdev = pcistr->pdev;
4905
4906         *ha_out = NULL;
4907
4908         shp = scsi_host_alloc(&gdth_template, sizeof(gdth_ha_str));
4909         if (!shp)
4910                 return -ENOMEM;
4911         ha = shost_priv(shp);
4912
4913         error = -ENODEV;
4914         if (!gdth_init_pci(pdev, pcistr, ha))
4915                 goto out_host_put;
4916
4917         /* controller found and initialized */
4918         printk("Configuring GDT-PCI HA at %d/%d IRQ %u\n",
4919                 pdev->bus->number,
4920                 PCI_SLOT(pdev->devfn),
4921                 ha->irq);
4922
4923         error = request_irq(ha->irq, gdth_interrupt,
4924                                 IRQF_DISABLED|IRQF_SHARED, "gdth", ha);
4925         if (error) {
4926                 printk("GDT-PCI: Unable to allocate IRQ\n");
4927                 goto out_host_put;
4928         }
4929
4930         shp->unchecked_isa_dma = 0;
4931         shp->irq = ha->irq;
4932         shp->dma_channel = 0xff;
4933
4934         ha->hanum = gdth_ctr_count++;
4935         ha->shost = shp;
4936
4937         ha->pccb = &ha->cmdext;
4938         ha->ccb_phys = 0L;
4939
4940         error = -ENOMEM;
4941
4942         ha->pscratch = pci_alloc_consistent(ha->pdev, GDTH_SCRATCH,
4943                                                 &scratch_dma_handle);
4944         if (!ha->pscratch)
4945                 goto out_free_irq;
4946         ha->scratch_phys = scratch_dma_handle;
4947
4948         ha->pmsg = pci_alloc_consistent(ha->pdev, sizeof(gdth_msg_str),
4949                                         &scratch_dma_handle);
4950         if (!ha->pmsg)
4951                 goto out_free_pscratch;
4952         ha->msg_phys = scratch_dma_handle;
4953
4954 #ifdef INT_COAL
4955         ha->coal_stat = pci_alloc_consistent(ha->pdev,
4956                         sizeof(gdth_coal_status) * MAXOFFSETS,
4957                         &scratch_dma_handle);
4958         if (!ha->coal_stat)
4959                 goto out_free_pmsg;
4960         ha->coal_stat_phys = scratch_dma_handle;
4961 #endif
4962
4963         ha->scratch_busy = FALSE;
4964         ha->req_first = NULL;
4965         ha->tid_cnt = pdev->device >= 0x200 ? MAXID : MAX_HDRIVES;
4966         if (max_ids > 0 && max_ids < ha->tid_cnt)
4967                 ha->tid_cnt = max_ids;
4968         for (i = 0; i < GDTH_MAXCMDS; ++i)
4969                 ha->cmd_tab[i].cmnd = UNUSED_CMND;
4970         ha->scan_mode = rescan ? 0x10 : 0;
4971
4972         error = -ENODEV;
4973         if (!gdth_search_drives(ha)) {
4974                 printk("GDT-PCI %d: Error during device scan\n", ha->hanum);
4975                 goto out_free_coal_stat;
4976         }
4977
4978         if (hdr_channel < 0 || hdr_channel > ha->bus_cnt)
4979                 hdr_channel = ha->bus_cnt;
4980         ha->virt_bus = hdr_channel;
4981
4982         /* 64-bit DMA only supported from FW >= x.43 */
4983         if (!(ha->cache_feat & ha->raw_feat & ha->screen_feat & GDT_64BIT) ||
4984             !ha->dma64_support) {
4985                 if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) {
4986                         printk(KERN_WARNING "GDT-PCI %d: "
4987                                 "Unable to set 32-bit DMA\n", ha->hanum);
4988                                 goto out_free_coal_stat;
4989                 }
4990         } else {
4991                 shp->max_cmd_len = 16;
4992                 if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
4993                         printk("GDT-PCI %d: 64-bit DMA enabled\n", ha->hanum);
4994                 } else if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) {
4995                         printk(KERN_WARNING "GDT-PCI %d: "
4996                                 "Unable to set 64/32-bit DMA\n", ha->hanum);
4997                         goto out_free_coal_stat;
4998                 }
4999         }
5000
5001         shp->max_id      = ha->tid_cnt;
5002         shp->max_lun     = MAXLUN;
5003         shp->max_channel = ha->bus_cnt;
5004
5005         spin_lock_init(&ha->smp_lock);
5006         gdth_enable_int(ha);
5007
5008         error = scsi_add_host(shp, &pdev->dev);
5009         if (error)
5010                 goto out_free_coal_stat;
5011         list_add_tail(&ha->list, &gdth_instances);
5012
5013         pci_set_drvdata(ha->pdev, ha);
5014
5015         scsi_scan_host(shp);
5016
5017         *ha_out = ha;
5018
5019         return 0;
5020
5021  out_free_coal_stat:
5022 #ifdef INT_COAL
5023         pci_free_consistent(ha->pdev, sizeof(gdth_coal_status) * MAXOFFSETS,
5024                                 ha->coal_stat, ha->coal_stat_phys);
5025  out_free_pmsg:
5026 #endif
5027         pci_free_consistent(ha->pdev, sizeof(gdth_msg_str),
5028                                 ha->pmsg, ha->msg_phys);
5029  out_free_pscratch:
5030         pci_free_consistent(ha->pdev, GDTH_SCRATCH,
5031                                 ha->pscratch, ha->scratch_phys);
5032  out_free_irq:
5033         free_irq(ha->irq, ha);
5034         gdth_ctr_count--;
5035  out_host_put:
5036         scsi_host_put(shp);
5037         return error;
5038 }
5039 #endif /* CONFIG_PCI */
5040
5041 static void gdth_remove_one(gdth_ha_str *ha)
5042 {
5043         struct Scsi_Host *shp = ha->shost;
5044
5045         TRACE2(("gdth_remove_one()\n"));
5046
5047         scsi_remove_host(shp);
5048
5049         gdth_flush(ha);
5050
5051         if (ha->sdev) {
5052                 scsi_free_host_dev(ha->sdev);
5053                 ha->sdev = NULL;
5054         }
5055
5056         if (shp->irq)
5057                 free_irq(shp->irq,ha);
5058
5059 #ifdef CONFIG_ISA
5060         if (shp->dma_channel != 0xff)
5061                 free_dma(shp->dma_channel);
5062 #endif
5063 #ifdef INT_COAL
5064         if (ha->coal_stat)
5065                 pci_free_consistent(ha->pdev, sizeof(gdth_coal_status) *
5066                         MAXOFFSETS, ha->coal_stat, ha->coal_stat_phys);
5067 #endif
5068         if (ha->pscratch)
5069                 pci_free_consistent(ha->pdev, GDTH_SCRATCH,
5070                         ha->pscratch, ha->scratch_phys);
5071         if (ha->pmsg)
5072                 pci_free_consistent(ha->pdev, sizeof(gdth_msg_str),
5073                         ha->pmsg, ha->msg_phys);
5074         if (ha->ccb_phys)
5075                 pci_unmap_single(ha->pdev,ha->ccb_phys,
5076                         sizeof(gdth_cmd_str),PCI_DMA_BIDIRECTIONAL);
5077
5078         scsi_host_put(shp);
5079 }
5080
5081 static int gdth_halt(struct notifier_block *nb, ulong event, void *buf)
5082 {
5083         gdth_ha_str *ha;
5084
5085         TRACE2(("gdth_halt() event %d\n", (int)event));
5086         if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF)
5087                 return NOTIFY_DONE;
5088
5089         list_for_each_entry(ha, &gdth_instances, list)
5090                 gdth_flush(ha);
5091
5092         return NOTIFY_OK;
5093 }
5094
5095 static struct notifier_block gdth_notifier = {
5096     gdth_halt, NULL, 0
5097 };
5098
5099 static int __init gdth_init(void)
5100 {
5101         if (disable) {
5102                 printk("GDT-HA: Controller driver disabled from"
5103                        " command line !\n");
5104                 return 0;
5105         }
5106
5107         printk("GDT-HA: Storage RAID Controller Driver. Version: %s\n",
5108                GDTH_VERSION_STR);
5109
5110         /* initializations */
5111         gdth_polling = TRUE;
5112         gdth_clear_events();
5113
5114         /* As default we do not probe for EISA or ISA controllers */
5115         if (probe_eisa_isa) {
5116                 /* scanning for controllers, at first: ISA controller */
5117 #ifdef CONFIG_ISA
5118                 ulong32 isa_bios;
5119                 for (isa_bios = 0xc8000UL; isa_bios <= 0xd8000UL;
5120                                 isa_bios += 0x8000UL)
5121                         gdth_isa_probe_one(isa_bios);
5122 #endif
5123 #ifdef CONFIG_EISA
5124                 {
5125                         ushort eisa_slot;
5126                         for (eisa_slot = 0x1000; eisa_slot <= 0x8000;
5127                                                  eisa_slot += 0x1000)
5128                                 gdth_eisa_probe_one(eisa_slot);
5129                 }
5130 #endif
5131         }
5132
5133 #ifdef CONFIG_PCI
5134         /* scanning for PCI controllers */
5135         if (pci_register_driver(&gdth_pci_driver) == 0)
5136                 gdth_pci_registered = true;
5137 #endif /* CONFIG_PCI */
5138
5139         TRACE2(("gdth_detect() %d controller detected\n", gdth_ctr_count));
5140
5141         if (list_empty(&gdth_instances))
5142                 return -ENODEV;
5143
5144 #ifdef GDTH_STATISTICS
5145         TRACE2(("gdth_detect(): Initializing timer !\n"));
5146         init_timer(&gdth_timer);
5147         gdth_timer.expires = jiffies + HZ;
5148         gdth_timer.data = 0L;
5149         gdth_timer.function = gdth_timeout;
5150         add_timer(&gdth_timer);
5151 #endif
5152         major = register_chrdev(0,"gdth", &gdth_fops);
5153         register_reboot_notifier(&gdth_notifier);
5154         gdth_polling = FALSE;
5155         return 0;
5156 }
5157
5158 static void __exit gdth_exit(void)
5159 {
5160         gdth_ha_str *ha;
5161
5162         unregister_chrdev(major, "gdth");
5163         unregister_reboot_notifier(&gdth_notifier);
5164
5165 #ifdef GDTH_STATISTICS
5166         del_timer_sync(&gdth_timer);
5167 #endif
5168
5169 #ifdef CONFIG_PCI
5170         if (gdth_pci_registered)
5171                 pci_unregister_driver(&gdth_pci_driver);
5172 #endif
5173
5174         list_for_each_entry(ha, &gdth_instances, list)
5175                 gdth_remove_one(ha);
5176 }
5177
5178 module_init(gdth_init);
5179 module_exit(gdth_exit);
5180
5181 #ifndef MODULE
5182 __setup("gdth=", option_setup);
5183 #endif