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:           gdth_bufflen
  89  * buffer:                  gdth_sglist
  90  * dma_handle:              unused
  91  * buffers_residual:        gdth_sg_count
  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, int to_buffer);
 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_halt(struct notifier_block *nb, ulong event, void *buf);
 186 static int gdth_queuecommand(Scsi_Cmnd *scp,void (*done)(Scsi_Cmnd *));
 187 static int __gdth_queuecommand(gdth_ha_str *ha, struct scsi_cmnd *scp,
 188                                 struct gdth_cmndinfo *cmndinfo);
 189 static void gdth_scsi_done(struct scsi_cmnd *scp);
 190
 191 #ifdef DEBUG_GDTH
 192 static unchar   DebugState = DEBUG_GDTH;
 193
 194 #ifdef __SERIAL__
 195 #define MAX_SERBUF 160
 196 static void ser_init(void);
 197 static void ser_puts(char *str);
 198 static void ser_putc(char c);
 199 static int  ser_printk(const char *fmt, ...);
 200 static char strbuf[MAX_SERBUF+1];
 201 #ifdef __COM2__
 202 #define COM_BASE 0x2f8
 203 #else
 204 #define COM_BASE 0x3f8
 205 #endif
 206 static void ser_init()
 207 {
 208     unsigned port=COM_BASE;
 209
 210     outb(0x80,port+3);
 211     outb(0,port+1);
 212     /* 19200 Baud, if 9600: outb(12,port) */
 213     outb(6, port);
 214     outb(3,port+3);
 215     outb(0,port+1);
 216     /*
 217     ser_putc('I');
 218     ser_putc(' ');
 219     */
 220 }
 221
 222 static void ser_puts(char *str)
 223 {
 224     char *ptr;
 225
 226     ser_init();
 227     for (ptr=str;*ptr;++ptr)
 228         ser_putc(*ptr);
 229 }
 230
 231 static void ser_putc(char c)
 232 {
 233     unsigned port=COM_BASE;
 234
 235     while ((inb(port+5) & 0x20)==0);
 236     outb(c,port);
 237     if (c==0x0a)
 238     {
 239         while ((inb(port+5) & 0x20)==0);
 240         outb(0x0d,port);
 241     }
 242 }
 243
 244 static int ser_printk(const char *fmt, ...)
 245 {
 246     va_list args;
 247     int i;
 248
 249     va_start(args,fmt);
 250     i = vsprintf(strbuf,fmt,args);
 251     ser_puts(strbuf);
 252     va_end(args);
 253     return i;
 254 }
 255
 256 #define TRACE(a)    {if (DebugState==1) {ser_printk a;}}
 257 #define TRACE2(a)   {if (DebugState==1 || DebugState==2) {ser_printk a;}}
 258 #define TRACE3(a)   {if (DebugState!=0) {ser_printk a;}}
 259
 260 #else /* !__SERIAL__ */
 261 #define TRACE(a)    {if (DebugState==1) {printk a;}}
 262 #define TRACE2(a)   {if (DebugState==1 || DebugState==2) {printk a;}}
 263 #define TRACE3(a)   {if (DebugState!=0) {printk a;}}
 264 #endif
 265
 266 #else /* !DEBUG */
 267 #define TRACE(a)
 268 #define TRACE2(a)
 269 #define TRACE3(a)
 270 #endif
 271
 272 #ifdef GDTH_STATISTICS
 273 static ulong32 max_rq=0, max_index=0, max_sg=0;
 274 #ifdef INT_COAL
 275 static ulong32 max_int_coal=0;
 276 #endif
 277 static ulong32 act_ints=0, act_ios=0, act_stats=0, act_rq=0;
 278 static struct timer_list gdth_timer;
 279 #endif
 280
 281 #define PTR2USHORT(a)   (ushort)(ulong)(a)
 282 #define GDTOFFSOF(a,b)  (size_t)&(((a*)0)->b)
 283 #define INDEX_OK(i,t)   ((i)<ARRAY_SIZE(t))
 284
 285 #define BUS_L2P(a,b)    ((b)>(a)->virt_bus ? (b-1):(b))
 286
 287 #ifdef CONFIG_ISA
 288 static unchar   gdth_drq_tab[4] = {5,6,7,7};            /* DRQ table */
 289 #endif
 290 #if defined(CONFIG_EISA) || defined(CONFIG_ISA)
 291 static unchar   gdth_irq_tab[6] = {0,10,11,12,14,0};    /* IRQ table */
 292 #endif
 293 static unchar   gdth_polling;                           /* polling if TRUE */
 294 static int      gdth_ctr_count  = 0;                    /* controller count */
 295 static LIST_HEAD(gdth_instances);                       /* controller list */
 296 static unchar   gdth_write_through = FALSE;             /* write through */
 297 static gdth_evt_str ebuffer[MAX_EVENTS];                /* event buffer */
 298 static int elastidx;
 299 static int eoldidx;
 300 static int major;
 301
 302 #define DIN     1                               /* IN data direction */
 303 #define DOU     2                               /* OUT data direction */
 304 #define DNO     DIN                             /* no data transfer */
 305 #define DUN     DIN                             /* unknown data direction */
 306 static unchar gdth_direction_tab[0x100] = {
 307     DNO,DNO,DIN,DIN,DOU,DIN,DIN,DOU,DIN,DUN,DOU,DOU,DUN,DUN,DUN,DIN,
 308     DNO,DIN,DIN,DOU,DIN,DOU,DNO,DNO,DOU,DNO,DIN,DNO,DIN,DOU,DNO,DUN,
 309     DIN,DUN,DIN,DUN,DOU,DIN,DUN,DUN,DIN,DIN,DOU,DNO,DUN,DIN,DOU,DOU,
 310     DOU,DOU,DOU,DNO,DIN,DNO,DNO,DIN,DOU,DOU,DOU,DOU,DIN,DOU,DIN,DOU,
 311     DOU,DOU,DIN,DIN,DIN,DNO,DUN,DNO,DNO,DNO,DUN,DNO,DOU,DIN,DUN,DUN,
 312     DUN,DUN,DUN,DUN,DUN,DOU,DUN,DUN,DUN,DUN,DIN,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,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
 315     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DIN,DUN,DOU,DUN,DUN,DUN,DUN,DUN,
 316     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DIN,DUN,
 317     DUN,DUN,DUN,DUN,DUN,DNO,DNO,DUN,DIN,DNO,DOU,DUN,DNO,DUN,DOU,DOU,
 318     DOU,DOU,DOU,DNO,DUN,DIN,DOU,DIN,DIN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
 319     DUN,DUN,DOU,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
 320     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
 321     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DOU,DUN,DUN,DUN,DUN,DUN,
 322     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN
 323 };
 324
 325 /* LILO and modprobe/insmod parameters */
 326 /* IRQ list for GDT3000/3020 EISA controllers */
 327 static int irq[MAXHA] __initdata =
 328 {0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
 329  0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};
 330 /* disable driver flag */
 331 static int disable __initdata = 0;
 332 /* reserve flag */
 333 static int reserve_mode = 1;
 334 /* reserve list */
 335 static int reserve_list[MAX_RES_ARGS] =
 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,0xff,0xff,
 338  0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};
 339 /* scan order for PCI controllers */
 340 static int reverse_scan = 0;
 341 /* virtual channel for the host drives */
 342 static int hdr_channel = 0;
 343 /* max. IDs per channel */
 344 static int max_ids = MAXID;
 345 /* rescan all IDs */
 346 static int rescan = 0;
 347 /* shared access */
 348 static int shared_access = 1;
 349 /* enable support for EISA and ISA controllers */
 350 static int probe_eisa_isa = 0;
 351 /* 64 bit DMA mode, support for drives > 2 TB, if force_dma32 = 0 */
 352 static int force_dma32 = 0;
 353
 354 /* parameters for modprobe/insmod */
 355 module_param_array(irq, int, NULL, 0);
 356 module_param(disable, int, 0);
 357 module_param(reserve_mode, int, 0);
 358 module_param_array(reserve_list, int, NULL, 0);
 359 module_param(reverse_scan, int, 0);
 360 module_param(hdr_channel, int, 0);
 361 module_param(max_ids, int, 0);
 362 module_param(rescan, int, 0);
 363 module_param(shared_access, int, 0);
 364 module_param(probe_eisa_isa, int, 0);
 365 module_param(force_dma32, int, 0);
 366 MODULE_AUTHOR("Achim Leubner");
 367 MODULE_LICENSE("GPL");
 368
 369 /* ioctl interface */
 370 static const struct file_operations gdth_fops = {
 371     .ioctl   = gdth_ioctl,
 372     .open    = gdth_open,
 373     .release = gdth_close,
 374 };
 375
 376 /*
 377  * gdth scsi_command access wrappers.
 378  *   below 6 functions are used throughout the driver to access scsi_command's
 379  *   io parameters. The reason we do not use the regular accessors from
 380  *   scsi_cmnd.h is because of gdth_execute(). Since it is unrecommended for
 381  *   llds to directly set scsi_cmnd's IO members. This driver will use SCp
 382  *   members for IO parameters, and will copy scsi_cmnd's members to Scp
 383  *   members in queuecommand. For internal commands through gdth_execute()
 384  *   SCp's members will be set directly.
 385  */
 386 static inline unsigned gdth_bufflen(struct scsi_cmnd *cmd)
 387 {
 388         return (unsigned)cmd->SCp.this_residual;
 389 }
 390
 391 static inline void gdth_set_bufflen(struct scsi_cmnd *cmd, unsigned bufflen)
 392 {
 393         cmd->SCp.this_residual = bufflen;
 394 }
 395
 396 static inline unsigned gdth_sg_count(struct scsi_cmnd *cmd)
 397 {
 398         return (unsigned)cmd->SCp.buffers_residual;
 399 }
 400
 401 static inline void gdth_set_sg_count(struct scsi_cmnd *cmd, unsigned sg_count)
 402 {
 403         cmd->SCp.buffers_residual = sg_count;
 404 }
 405
 406 static inline struct scatterlist *gdth_sglist(struct scsi_cmnd *cmd)
 407 {
 408         return cmd->SCp.buffer;
 409 }
 410
 411 static inline void gdth_set_sglist(struct scsi_cmnd *cmd,
 412                                    struct scatterlist *sglist)
 413 {
 414         cmd->SCp.buffer = sglist;
 415 }
 416
 417 #include "gdth_proc.h"
 418 #include "gdth_proc.c"
 419
 420 /* notifier block to get a notify on system shutdown/halt/reboot */
 421 static struct notifier_block gdth_notifier = {
 422     gdth_halt, NULL, 0
 423 };
 424 static int notifier_disabled = 0;
 425
 426 static gdth_ha_str *gdth_find_ha(int hanum)
 427 {
 428         gdth_ha_str *ha;
 429
 430         list_for_each_entry(ha, &gdth_instances, list)
 431                 if (hanum == ha->hanum)
 432                         return ha;
 433
 434         return NULL;
 435 }
 436
 437 static struct gdth_cmndinfo *gdth_get_cmndinfo(gdth_ha_str *ha)
 438 {
 439         struct gdth_cmndinfo *priv = NULL;
 440         ulong flags;
 441         int i;
 442
 443         spin_lock_irqsave(&ha->smp_lock, flags);
 444
 445         for (i=0; i<GDTH_MAXCMDS; ++i) {
 446                 if (ha->cmndinfo[i].index == 0) {
 447                         priv = &ha->cmndinfo[i];
 448                         priv->index = i+1;
 449                         memset(priv, 0, sizeof(*priv));
 450                         break;
 451                 }
 452         }
 453
 454         spin_unlock_irqrestore(&ha->smp_lock, flags);
 455
 456         return priv;
 457 }
 458
 459 static void gdth_put_cmndinfo(struct gdth_cmndinfo *priv)
 460 {
 461         BUG_ON(!priv);
 462         priv->index = 0;
 463 }
 464
 465 static void gdth_delay(int milliseconds)
 466 {
 467     if (milliseconds == 0) {
 468         udelay(1);
 469     } else {
 470         mdelay(milliseconds);
 471     }
 472 }
 473
 474 static void gdth_scsi_done(struct scsi_cmnd *scp)
 475 {
 476         struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
 477         int internal_command = cmndinfo->internal_command;
 478
 479         TRACE2(("gdth_scsi_done()\n"));
 480
 481         gdth_put_cmndinfo(cmndinfo);
 482         scp->host_scribble = NULL;
 483
 484         if (internal_command)
 485                 complete((struct completion *)scp->request);
 486         else
 487                 scp->scsi_done(scp);
 488 }
 489
 490 int __gdth_execute(struct scsi_device *sdev, gdth_cmd_str *gdtcmd, char *cmnd,
 491                    int timeout, u32 *info)
 492 {
 493     gdth_ha_str *ha = shost_priv(sdev->host);
 494     Scsi_Cmnd *scp;
 495     struct gdth_cmndinfo cmndinfo;
 496     struct scatterlist one_sg;
 497     DECLARE_COMPLETION_ONSTACK(wait);
 498     int rval;
 499
 500     scp = kzalloc(sizeof(*scp), GFP_KERNEL);
 501     if (!scp)
 502         return -ENOMEM;
 503
 504     scp->device = sdev;
 505     memset(&cmndinfo, 0, sizeof(cmndinfo));
 506
 507     /* use request field to save the ptr. to completion struct. */
 508     scp->request = (struct request *)&wait;
 509     scp->timeout_per_command = timeout*HZ;
 510     sg_init_one(&one_sg, gdtcmd, sizeof(*gdtcmd));
 511     gdth_set_sglist(scp, &one_sg);
 512     gdth_set_sg_count(scp, 1);
 513     gdth_set_bufflen(scp, sizeof(*gdtcmd));
 514     scp->cmd_len = 12;
 515     memcpy(scp->cmnd, cmnd, 12);
 516     cmndinfo.priority = IOCTL_PRI;
 517     cmndinfo.internal_command = 1;
 518
 519     TRACE(("__gdth_execute() cmd 0x%x\n", scp->cmnd[0]));
 520     __gdth_queuecommand(ha, scp, &cmndinfo);
 521
 522     wait_for_completion(&wait);
 523
 524     rval = cmndinfo.status;
 525     if (info)
 526         *info = cmndinfo.info;
 527     kfree(scp);
 528     return rval;
 529 }
 530
 531 int gdth_execute(struct Scsi_Host *shost, gdth_cmd_str *gdtcmd, char *cmnd,
 532                  int timeout, u32 *info)
 533 {
 534     struct scsi_device *sdev = scsi_get_host_dev(shost);
 535     int rval = __gdth_execute(sdev, gdtcmd, cmnd, timeout, info);
 536
 537     scsi_free_host_dev(sdev);
 538     return rval;
 539 }
 540
 541 static void gdth_eval_mapping(ulong32 size, ulong32 *cyls, int *heads, int *secs)
 542 {
 543     *cyls = size /HEADS/SECS;
 544     if (*cyls <= MAXCYLS) {
 545         *heads = HEADS;
 546         *secs = SECS;
 547     } else {                                        /* too high for 64*32 */
 548         *cyls = size /MEDHEADS/MEDSECS;
 549         if (*cyls <= MAXCYLS) {
 550             *heads = MEDHEADS;
 551             *secs = MEDSECS;
 552         } else {                                    /* too high for 127*63 */
 553             *cyls = size /BIGHEADS/BIGSECS;
 554             *heads = BIGHEADS;
 555             *secs = BIGSECS;
 556         }
 557     }
 558 }
 559
 560 /* controller search and initialization functions */
 561 #ifdef CONFIG_EISA
 562 static int __init gdth_search_eisa(ushort eisa_adr)
 563 {
 564     ulong32 id;
 565
 566     TRACE(("gdth_search_eisa() adr. %x\n",eisa_adr));
 567     id = inl(eisa_adr+ID0REG);
 568     if (id == GDT3A_ID || id == GDT3B_ID) {     /* GDT3000A or GDT3000B */
 569         if ((inb(eisa_adr+EISAREG) & 8) == 0)
 570             return 0;                           /* not EISA configured */
 571         return 1;
 572     }
 573     if (id == GDT3_ID)                          /* GDT3000 */
 574         return 1;
 575
 576     return 0;
 577 }
 578 #endif /* CONFIG_EISA */
 579
 580 #ifdef CONFIG_ISA
 581 static int __init gdth_search_isa(ulong32 bios_adr)
 582 {
 583     void __iomem *addr;
 584     ulong32 id;
 585
 586     TRACE(("gdth_search_isa() bios adr. %x\n",bios_adr));
 587     if ((addr = ioremap(bios_adr+BIOS_ID_OFFS, sizeof(ulong32))) != NULL) {
 588         id = readl(addr);
 589         iounmap(addr);
 590         if (id == GDT2_ID)                          /* GDT2000 */
 591             return 1;
 592     }
 593     return 0;
 594 }
 595 #endif /* CONFIG_ISA */
 596
 597 #ifdef CONFIG_PCI
 598 static void gdth_search_dev(gdth_pci_str *pcistr, ushort *cnt,
 599                             ushort vendor, ushort dev);
 600
 601 static int __init gdth_search_pci(gdth_pci_str *pcistr)
 602 {
 603     ushort device, cnt;
 604
 605     TRACE(("gdth_search_pci()\n"));
 606
 607     cnt = 0;
 608     for (device = 0; device <= PCI_DEVICE_ID_VORTEX_GDT6555; ++device)
 609         gdth_search_dev(pcistr, &cnt, PCI_VENDOR_ID_VORTEX, device);
 610     for (device = PCI_DEVICE_ID_VORTEX_GDT6x17RP;
 611          device <= PCI_DEVICE_ID_VORTEX_GDTMAXRP; ++device)
 612         gdth_search_dev(pcistr, &cnt, PCI_VENDOR_ID_VORTEX, device);
 613     gdth_search_dev(pcistr, &cnt, PCI_VENDOR_ID_VORTEX,
 614                     PCI_DEVICE_ID_VORTEX_GDTNEWRX);
 615     gdth_search_dev(pcistr, &cnt, PCI_VENDOR_ID_VORTEX,
 616                     PCI_DEVICE_ID_VORTEX_GDTNEWRX2);
 617     gdth_search_dev(pcistr, &cnt, PCI_VENDOR_ID_INTEL,
 618                     PCI_DEVICE_ID_INTEL_SRC);
 619     gdth_search_dev(pcistr, &cnt, PCI_VENDOR_ID_INTEL,
 620                     PCI_DEVICE_ID_INTEL_SRC_XSCALE);
 621     return cnt;
 622 }
 623
 624 /* Vortex only makes RAID controllers.
 625  * We do not really want to specify all 550 ids here, so wildcard match.
 626  */
 627 static struct pci_device_id gdthtable[] __maybe_unused = {
 628     {PCI_VENDOR_ID_VORTEX,PCI_ANY_ID,PCI_ANY_ID, PCI_ANY_ID},
 629     {PCI_VENDOR_ID_INTEL,PCI_DEVICE_ID_INTEL_SRC,PCI_ANY_ID,PCI_ANY_ID},
 630     {PCI_VENDOR_ID_INTEL,PCI_DEVICE_ID_INTEL_SRC_XSCALE,PCI_ANY_ID,PCI_ANY_ID},
 631     {0}
 632 };
 633 MODULE_DEVICE_TABLE(pci,gdthtable);
 634
 635 static void __init gdth_search_dev(gdth_pci_str *pcistr, ushort *cnt,
 636                                    ushort vendor, ushort device)
 637 {
 638     ulong base0, base1, base2;
 639     struct pci_dev *pdev;
 640
 641     TRACE(("gdth_search_dev() cnt %d vendor %x device %x\n",
 642           *cnt, vendor, device));
 643
 644     pdev = NULL;
 645     while ((pdev = pci_find_device(vendor, device, pdev))
 646            != NULL) {
 647         if (pci_enable_device(pdev))
 648             continue;
 649         if (*cnt >= MAXHA)
 650             return;
 651         /* GDT PCI controller found, resources are already in pdev */
 652         pcistr[*cnt].pdev = pdev;
 653         pcistr[*cnt].irq = pdev->irq;
 654         base0 = pci_resource_flags(pdev, 0);
 655         base1 = pci_resource_flags(pdev, 1);
 656         base2 = pci_resource_flags(pdev, 2);
 657         if (device <= PCI_DEVICE_ID_VORTEX_GDT6000B ||   /* GDT6000/B */
 658             device >= PCI_DEVICE_ID_VORTEX_GDT6x17RP) {  /* MPR */
 659             if (!(base0 & IORESOURCE_MEM))
 660                 continue;
 661             pcistr[*cnt].dpmem = pci_resource_start(pdev, 0);
 662         } else {                                  /* GDT6110, GDT6120, .. */
 663             if (!(base0 & IORESOURCE_MEM) ||
 664                 !(base2 & IORESOURCE_MEM) ||
 665                 !(base1 & IORESOURCE_IO))
 666                 continue;
 667             pcistr[*cnt].dpmem = pci_resource_start(pdev, 2);
 668             pcistr[*cnt].io_mm = pci_resource_start(pdev, 0);
 669             pcistr[*cnt].io    = pci_resource_start(pdev, 1);
 670         }
 671         TRACE2(("Controller found at %d/%d, irq %d, dpmem 0x%lx\n",
 672                 pcistr[*cnt].pdev->bus->number,
 673                 PCI_SLOT(pcistr[*cnt].pdev->devfn),
 674                 pcistr[*cnt].irq, pcistr[*cnt].dpmem));
 675         (*cnt)++;
 676     }
 677 }
 678
 679 static void __init gdth_sort_pci(gdth_pci_str *pcistr, int cnt)
 680 {
 681     gdth_pci_str temp;
 682     int i, changed;
 683
 684     TRACE(("gdth_sort_pci() cnt %d\n",cnt));
 685     if (cnt == 0)
 686         return;
 687
 688     do {
 689         changed = FALSE;
 690         for (i = 0; i < cnt-1; ++i) {
 691             if (!reverse_scan) {
 692                 if ((pcistr[i].pdev->bus->number > pcistr[i+1].pdev->bus->number) ||
 693                     (pcistr[i].pdev->bus->number == pcistr[i+1].pdev->bus->number &&
 694                      PCI_SLOT(pcistr[i].pdev->devfn) >
 695                      PCI_SLOT(pcistr[i+1].pdev->devfn))) {
 696                     temp = pcistr[i];
 697                     pcistr[i] = pcistr[i+1];
 698                     pcistr[i+1] = temp;
 699                     changed = TRUE;
 700                 }
 701             } else {
 702                 if ((pcistr[i].pdev->bus->number < pcistr[i+1].pdev->bus->number) ||
 703                     (pcistr[i].pdev->bus->number == pcistr[i+1].pdev->bus->number &&
 704                      PCI_SLOT(pcistr[i].pdev->devfn) <
 705                      PCI_SLOT(pcistr[i+1].pdev->devfn))) {
 706                     temp = pcistr[i];
 707                     pcistr[i] = pcistr[i+1];
 708                     pcistr[i+1] = temp;
 709                     changed = TRUE;
 710                 }
 711             }
 712         }
 713     } while (changed);
 714 }
 715 #endif /* CONFIG_PCI */
 716
 717 #ifdef CONFIG_EISA
 718 static int __init gdth_init_eisa(ushort eisa_adr,gdth_ha_str *ha)
 719 {
 720     ulong32 retries,id;
 721     unchar prot_ver,eisacf,i,irq_found;
 722
 723     TRACE(("gdth_init_eisa() adr. %x\n",eisa_adr));
 724
 725     /* disable board interrupts, deinitialize services */
 726     outb(0xff,eisa_adr+EDOORREG);
 727     outb(0x00,eisa_adr+EDENABREG);
 728     outb(0x00,eisa_adr+EINTENABREG);
 729
 730     outb(0xff,eisa_adr+LDOORREG);
 731     retries = INIT_RETRIES;
 732     gdth_delay(20);
 733     while (inb(eisa_adr+EDOORREG) != 0xff) {
 734         if (--retries == 0) {
 735             printk("GDT-EISA: Initialization error (DEINIT failed)\n");
 736             return 0;
 737         }
 738         gdth_delay(1);
 739         TRACE2(("wait for DEINIT: retries=%d\n",retries));
 740     }
 741     prot_ver = inb(eisa_adr+MAILBOXREG);
 742     outb(0xff,eisa_adr+EDOORREG);
 743     if (prot_ver != PROTOCOL_VERSION) {
 744         printk("GDT-EISA: Illegal protocol version\n");
 745         return 0;
 746     }
 747     ha->bmic = eisa_adr;
 748     ha->brd_phys = (ulong32)eisa_adr >> 12;
 749
 750     outl(0,eisa_adr+MAILBOXREG);
 751     outl(0,eisa_adr+MAILBOXREG+4);
 752     outl(0,eisa_adr+MAILBOXREG+8);
 753     outl(0,eisa_adr+MAILBOXREG+12);
 754
 755     /* detect IRQ */
 756     if ((id = inl(eisa_adr+ID0REG)) == GDT3_ID) {
 757         ha->oem_id = OEM_ID_ICP;
 758         ha->type = GDT_EISA;
 759         ha->stype = id;
 760         outl(1,eisa_adr+MAILBOXREG+8);
 761         outb(0xfe,eisa_adr+LDOORREG);
 762         retries = INIT_RETRIES;
 763         gdth_delay(20);
 764         while (inb(eisa_adr+EDOORREG) != 0xfe) {
 765             if (--retries == 0) {
 766                 printk("GDT-EISA: Initialization error (get IRQ failed)\n");
 767                 return 0;
 768             }
 769             gdth_delay(1);
 770         }
 771         ha->irq = inb(eisa_adr+MAILBOXREG);
 772         outb(0xff,eisa_adr+EDOORREG);
 773         TRACE2(("GDT3000/3020: IRQ=%d\n",ha->irq));
 774         /* check the result */
 775         if (ha->irq == 0) {
 776                 TRACE2(("Unknown IRQ, use IRQ table from cmd line !\n"));
 777                 for (i = 0, irq_found = FALSE;
 778                      i < MAXHA && irq[i] != 0xff; ++i) {
 779                 if (irq[i]==10 || irq[i]==11 || irq[i]==12 || irq[i]==14) {
 780                     irq_found = TRUE;
 781                     break;
 782                 }
 783                 }
 784             if (irq_found) {
 785                 ha->irq = irq[i];
 786                 irq[i] = 0;
 787                 printk("GDT-EISA: Can not detect controller IRQ,\n");
 788                 printk("Use IRQ setting from command line (IRQ = %d)\n",
 789                        ha->irq);
 790             } else {
 791                 printk("GDT-EISA: Initialization error (unknown IRQ), Enable\n");
 792                 printk("the controller BIOS or use command line parameters\n");
 793                 return 0;
 794             }
 795         }
 796     } else {
 797         eisacf = inb(eisa_adr+EISAREG) & 7;
 798         if (eisacf > 4)                         /* level triggered */
 799             eisacf -= 4;
 800         ha->irq = gdth_irq_tab[eisacf];
 801         ha->oem_id = OEM_ID_ICP;
 802         ha->type = GDT_EISA;
 803         ha->stype = id;
 804     }
 805
 806     ha->dma64_support = 0;
 807     return 1;
 808 }
 809 #endif /* CONFIG_EISA */
 810
 811 #ifdef CONFIG_ISA
 812 static int __init gdth_init_isa(ulong32 bios_adr,gdth_ha_str *ha)
 813 {
 814     register gdt2_dpram_str __iomem *dp2_ptr;
 815     int i;
 816     unchar irq_drq,prot_ver;
 817     ulong32 retries;
 818
 819     TRACE(("gdth_init_isa() bios adr. %x\n",bios_adr));
 820
 821     ha->brd = ioremap(bios_adr, sizeof(gdt2_dpram_str));
 822     if (ha->brd == NULL) {
 823         printk("GDT-ISA: Initialization error (DPMEM remap error)\n");
 824         return 0;
 825     }
 826     dp2_ptr = ha->brd;
 827     writeb(1, &dp2_ptr->io.memlock); /* switch off write protection */
 828     /* reset interface area */
 829     memset_io(&dp2_ptr->u, 0, sizeof(dp2_ptr->u));
 830     if (readl(&dp2_ptr->u) != 0) {
 831         printk("GDT-ISA: Initialization error (DPMEM write error)\n");
 832         iounmap(ha->brd);
 833         return 0;
 834     }
 835
 836     /* disable board interrupts, read DRQ and IRQ */
 837     writeb(0xff, &dp2_ptr->io.irqdel);
 838     writeb(0x00, &dp2_ptr->io.irqen);
 839     writeb(0x00, &dp2_ptr->u.ic.S_Status);
 840     writeb(0x00, &dp2_ptr->u.ic.Cmd_Index);
 841
 842     irq_drq = readb(&dp2_ptr->io.rq);
 843     for (i=0; i<3; ++i) {
 844         if ((irq_drq & 1)==0)
 845             break;
 846         irq_drq >>= 1;
 847     }
 848     ha->drq = gdth_drq_tab[i];
 849
 850     irq_drq = readb(&dp2_ptr->io.rq) >> 3;
 851     for (i=1; i<5; ++i) {
 852         if ((irq_drq & 1)==0)
 853             break;
 854         irq_drq >>= 1;
 855     }
 856     ha->irq = gdth_irq_tab[i];
 857
 858     /* deinitialize services */
 859     writel(bios_adr, &dp2_ptr->u.ic.S_Info[0]);
 860     writeb(0xff, &dp2_ptr->u.ic.S_Cmd_Indx);
 861     writeb(0, &dp2_ptr->io.event);
 862     retries = INIT_RETRIES;
 863     gdth_delay(20);
 864     while (readb(&dp2_ptr->u.ic.S_Status) != 0xff) {
 865         if (--retries == 0) {
 866             printk("GDT-ISA: Initialization error (DEINIT failed)\n");
 867             iounmap(ha->brd);
 868             return 0;
 869         }
 870         gdth_delay(1);
 871     }
 872     prot_ver = (unchar)readl(&dp2_ptr->u.ic.S_Info[0]);
 873     writeb(0, &dp2_ptr->u.ic.Status);
 874     writeb(0xff, &dp2_ptr->io.irqdel);
 875     if (prot_ver != PROTOCOL_VERSION) {
 876         printk("GDT-ISA: Illegal protocol version\n");
 877         iounmap(ha->brd);
 878         return 0;
 879     }
 880
 881     ha->oem_id = OEM_ID_ICP;
 882     ha->type = GDT_ISA;
 883     ha->ic_all_size = sizeof(dp2_ptr->u);
 884     ha->stype= GDT2_ID;
 885     ha->brd_phys = bios_adr >> 4;
 886
 887     /* special request to controller BIOS */
 888     writel(0x00, &dp2_ptr->u.ic.S_Info[0]);
 889     writel(0x00, &dp2_ptr->u.ic.S_Info[1]);
 890     writel(0x01, &dp2_ptr->u.ic.S_Info[2]);
 891     writel(0x00, &dp2_ptr->u.ic.S_Info[3]);
 892     writeb(0xfe, &dp2_ptr->u.ic.S_Cmd_Indx);
 893     writeb(0, &dp2_ptr->io.event);
 894     retries = INIT_RETRIES;
 895     gdth_delay(20);
 896     while (readb(&dp2_ptr->u.ic.S_Status) != 0xfe) {
 897         if (--retries == 0) {
 898             printk("GDT-ISA: Initialization error\n");
 899             iounmap(ha->brd);
 900             return 0;
 901         }
 902         gdth_delay(1);
 903     }
 904     writeb(0, &dp2_ptr->u.ic.Status);
 905     writeb(0xff, &dp2_ptr->io.irqdel);
 906
 907     ha->dma64_support = 0;
 908     return 1;
 909 }
 910 #endif /* CONFIG_ISA */
 911
 912 #ifdef CONFIG_PCI
 913 static int __init gdth_init_pci(gdth_pci_str *pcistr,gdth_ha_str *ha)
 914 {
 915     register gdt6_dpram_str __iomem *dp6_ptr;
 916     register gdt6c_dpram_str __iomem *dp6c_ptr;
 917     register gdt6m_dpram_str __iomem *dp6m_ptr;
 918     ulong32 retries;
 919     unchar prot_ver;
 920     ushort command;
 921     int i, found = FALSE;
 922
 923     TRACE(("gdth_init_pci()\n"));
 924
 925     if (pcistr->pdev->vendor == PCI_VENDOR_ID_INTEL)
 926         ha->oem_id = OEM_ID_INTEL;
 927     else
 928         ha->oem_id = OEM_ID_ICP;
 929     ha->brd_phys = (pcistr->pdev->bus->number << 8) | (pcistr->pdev->devfn & 0xf8);
 930     ha->stype = (ulong32)pcistr->pdev->device;
 931     ha->irq = pcistr->irq;
 932     ha->pdev = pcistr->pdev;
 933
 934     if (ha->pdev->device <= PCI_DEVICE_ID_VORTEX_GDT6000B) {  /* GDT6000/B */
 935         TRACE2(("init_pci() dpmem %lx irq %d\n",pcistr->dpmem,ha->irq));
 936         ha->brd = ioremap(pcistr->dpmem, sizeof(gdt6_dpram_str));
 937         if (ha->brd == NULL) {
 938             printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
 939             return 0;
 940         }
 941         /* check and reset interface area */
 942         dp6_ptr = ha->brd;
 943         writel(DPMEM_MAGIC, &dp6_ptr->u);
 944         if (readl(&dp6_ptr->u) != DPMEM_MAGIC) {
 945             printk("GDT-PCI: Cannot access DPMEM at 0x%lx (shadowed?)\n",
 946                    pcistr->dpmem);
 947             found = FALSE;
 948             for (i = 0xC8000; i < 0xE8000; i += 0x4000) {
 949                 iounmap(ha->brd);
 950                 ha->brd = ioremap(i, sizeof(ushort));
 951                 if (ha->brd == NULL) {
 952                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
 953                     return 0;
 954                 }
 955                 if (readw(ha->brd) != 0xffff) {
 956                     TRACE2(("init_pci_old() address 0x%x busy\n", i));
 957                     continue;
 958                 }
 959                 iounmap(ha->brd);
 960                 pci_write_config_dword(pcistr->pdev,
 961                                        PCI_BASE_ADDRESS_0, i);
 962                 ha->brd = ioremap(i, sizeof(gdt6_dpram_str));
 963                 if (ha->brd == NULL) {
 964                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
 965                     return 0;
 966                 }
 967                 dp6_ptr = ha->brd;
 968                 writel(DPMEM_MAGIC, &dp6_ptr->u);
 969                 if (readl(&dp6_ptr->u) == DPMEM_MAGIC) {
 970                     printk("GDT-PCI: Use free address at 0x%x\n", i);
 971                     found = TRUE;
 972                     break;
 973                 }
 974             }
 975             if (!found) {
 976                 printk("GDT-PCI: No free address found!\n");
 977                 iounmap(ha->brd);
 978                 return 0;
 979             }
 980         }
 981         memset_io(&dp6_ptr->u, 0, sizeof(dp6_ptr->u));
 982         if (readl(&dp6_ptr->u) != 0) {
 983             printk("GDT-PCI: Initialization error (DPMEM write error)\n");
 984             iounmap(ha->brd);
 985             return 0;
 986         }
 987
 988         /* disable board interrupts, deinit services */
 989         writeb(0xff, &dp6_ptr->io.irqdel);
 990         writeb(0x00, &dp6_ptr->io.irqen);
 991         writeb(0x00, &dp6_ptr->u.ic.S_Status);
 992         writeb(0x00, &dp6_ptr->u.ic.Cmd_Index);
 993
 994         writel(pcistr->dpmem, &dp6_ptr->u.ic.S_Info[0]);
 995         writeb(0xff, &dp6_ptr->u.ic.S_Cmd_Indx);
 996         writeb(0, &dp6_ptr->io.event);
 997         retries = INIT_RETRIES;
 998         gdth_delay(20);
 999         while (readb(&dp6_ptr->u.ic.S_Status) != 0xff) {
1000             if (--retries == 0) {
1001                 printk("GDT-PCI: Initialization error (DEINIT failed)\n");
1002                 iounmap(ha->brd);
1003                 return 0;
1004             }
1005             gdth_delay(1);
1006         }
1007         prot_ver = (unchar)readl(&dp6_ptr->u.ic.S_Info[0]);
1008         writeb(0, &dp6_ptr->u.ic.S_Status);
1009         writeb(0xff, &dp6_ptr->io.irqdel);
1010         if (prot_ver != PROTOCOL_VERSION) {
1011             printk("GDT-PCI: Illegal protocol version\n");
1012             iounmap(ha->brd);
1013             return 0;
1014         }
1015
1016         ha->type = GDT_PCI;
1017         ha->ic_all_size = sizeof(dp6_ptr->u);
1018
1019         /* special command to controller BIOS */
1020         writel(0x00, &dp6_ptr->u.ic.S_Info[0]);
1021         writel(0x00, &dp6_ptr->u.ic.S_Info[1]);
1022         writel(0x00, &dp6_ptr->u.ic.S_Info[2]);
1023         writel(0x00, &dp6_ptr->u.ic.S_Info[3]);
1024         writeb(0xfe, &dp6_ptr->u.ic.S_Cmd_Indx);
1025         writeb(0, &dp6_ptr->io.event);
1026         retries = INIT_RETRIES;
1027         gdth_delay(20);
1028         while (readb(&dp6_ptr->u.ic.S_Status) != 0xfe) {
1029             if (--retries == 0) {
1030                 printk("GDT-PCI: Initialization error\n");
1031                 iounmap(ha->brd);
1032                 return 0;
1033             }
1034             gdth_delay(1);
1035         }
1036         writeb(0, &dp6_ptr->u.ic.S_Status);
1037         writeb(0xff, &dp6_ptr->io.irqdel);
1038
1039         ha->dma64_support = 0;
1040
1041     } else if (ha->pdev->device <= PCI_DEVICE_ID_VORTEX_GDT6555) { /* GDT6110, ... */
1042         ha->plx = (gdt6c_plx_regs *)pcistr->io;
1043         TRACE2(("init_pci_new() dpmem %lx irq %d\n",
1044             pcistr->dpmem,ha->irq));
1045         ha->brd = ioremap(pcistr->dpmem, sizeof(gdt6c_dpram_str));
1046         if (ha->brd == NULL) {
1047             printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1048             iounmap(ha->brd);
1049             return 0;
1050         }
1051         /* check and reset interface area */
1052         dp6c_ptr = ha->brd;
1053         writel(DPMEM_MAGIC, &dp6c_ptr->u);
1054         if (readl(&dp6c_ptr->u) != DPMEM_MAGIC) {
1055             printk("GDT-PCI: Cannot access DPMEM at 0x%lx (shadowed?)\n",
1056                    pcistr->dpmem);
1057             found = FALSE;
1058             for (i = 0xC8000; i < 0xE8000; i += 0x4000) {
1059                 iounmap(ha->brd);
1060                 ha->brd = ioremap(i, sizeof(ushort));
1061                 if (ha->brd == NULL) {
1062                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1063                     return 0;
1064                 }
1065                 if (readw(ha->brd) != 0xffff) {
1066                     TRACE2(("init_pci_plx() address 0x%x busy\n", i));
1067                     continue;
1068                 }
1069                 iounmap(ha->brd);
1070                 pci_write_config_dword(pcistr->pdev,
1071                                        PCI_BASE_ADDRESS_2, i);
1072                 ha->brd = ioremap(i, sizeof(gdt6c_dpram_str));
1073                 if (ha->brd == NULL) {
1074                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1075                     return 0;
1076                 }
1077                 dp6c_ptr = ha->brd;
1078                 writel(DPMEM_MAGIC, &dp6c_ptr->u);
1079                 if (readl(&dp6c_ptr->u) == DPMEM_MAGIC) {
1080                     printk("GDT-PCI: Use free address at 0x%x\n", i);
1081                     found = TRUE;
1082                     break;
1083                 }
1084             }
1085             if (!found) {
1086                 printk("GDT-PCI: No free address found!\n");
1087                 iounmap(ha->brd);
1088                 return 0;
1089             }
1090         }
1091         memset_io(&dp6c_ptr->u, 0, sizeof(dp6c_ptr->u));
1092         if (readl(&dp6c_ptr->u) != 0) {
1093             printk("GDT-PCI: Initialization error (DPMEM write error)\n");
1094             iounmap(ha->brd);
1095             return 0;
1096         }
1097
1098         /* disable board interrupts, deinit services */
1099         outb(0x00,PTR2USHORT(&ha->plx->control1));
1100         outb(0xff,PTR2USHORT(&ha->plx->edoor_reg));
1101
1102         writeb(0x00, &dp6c_ptr->u.ic.S_Status);
1103         writeb(0x00, &dp6c_ptr->u.ic.Cmd_Index);
1104
1105         writel(pcistr->dpmem, &dp6c_ptr->u.ic.S_Info[0]);
1106         writeb(0xff, &dp6c_ptr->u.ic.S_Cmd_Indx);
1107
1108         outb(1,PTR2USHORT(&ha->plx->ldoor_reg));
1109
1110         retries = INIT_RETRIES;
1111         gdth_delay(20);
1112         while (readb(&dp6c_ptr->u.ic.S_Status) != 0xff) {
1113             if (--retries == 0) {
1114                 printk("GDT-PCI: Initialization error (DEINIT failed)\n");
1115                 iounmap(ha->brd);
1116                 return 0;
1117             }
1118             gdth_delay(1);
1119         }
1120         prot_ver = (unchar)readl(&dp6c_ptr->u.ic.S_Info[0]);
1121         writeb(0, &dp6c_ptr->u.ic.Status);
1122         if (prot_ver != PROTOCOL_VERSION) {
1123             printk("GDT-PCI: Illegal protocol version\n");
1124             iounmap(ha->brd);
1125             return 0;
1126         }
1127
1128         ha->type = GDT_PCINEW;
1129         ha->ic_all_size = sizeof(dp6c_ptr->u);
1130
1131         /* special command to controller BIOS */
1132         writel(0x00, &dp6c_ptr->u.ic.S_Info[0]);
1133         writel(0x00, &dp6c_ptr->u.ic.S_Info[1]);
1134         writel(0x00, &dp6c_ptr->u.ic.S_Info[2]);
1135         writel(0x00, &dp6c_ptr->u.ic.S_Info[3]);
1136         writeb(0xfe, &dp6c_ptr->u.ic.S_Cmd_Indx);
1137
1138         outb(1,PTR2USHORT(&ha->plx->ldoor_reg));
1139
1140         retries = INIT_RETRIES;
1141         gdth_delay(20);
1142         while (readb(&dp6c_ptr->u.ic.S_Status) != 0xfe) {
1143             if (--retries == 0) {
1144                 printk("GDT-PCI: Initialization error\n");
1145                 iounmap(ha->brd);
1146                 return 0;
1147             }
1148             gdth_delay(1);
1149         }
1150         writeb(0, &dp6c_ptr->u.ic.S_Status);
1151
1152         ha->dma64_support = 0;
1153
1154     } else {                                            /* MPR */
1155         TRACE2(("init_pci_mpr() dpmem %lx irq %d\n",pcistr->dpmem,ha->irq));
1156         ha->brd = ioremap(pcistr->dpmem, sizeof(gdt6m_dpram_str));
1157         if (ha->brd == NULL) {
1158             printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1159             return 0;
1160         }
1161
1162         /* manipulate config. space to enable DPMEM, start RP controller */
1163         pci_read_config_word(pcistr->pdev, PCI_COMMAND, &command);
1164         command |= 6;
1165         pci_write_config_word(pcistr->pdev, PCI_COMMAND, command);
1166         if (pci_resource_start(pcistr->pdev, 8) == 1UL)
1167             pci_resource_start(pcistr->pdev, 8) = 0UL;
1168         i = 0xFEFF0001UL;
1169         pci_write_config_dword(pcistr->pdev, PCI_ROM_ADDRESS, i);
1170         gdth_delay(1);
1171         pci_write_config_dword(pcistr->pdev, PCI_ROM_ADDRESS,
1172                                pci_resource_start(pcistr->pdev, 8));
1173
1174         dp6m_ptr = ha->brd;
1175
1176         /* Ensure that it is safe to access the non HW portions of DPMEM.
1177          * Aditional check needed for Xscale based RAID controllers */
1178         while( ((int)readb(&dp6m_ptr->i960r.sema0_reg) ) & 3 )
1179             gdth_delay(1);
1180
1181         /* check and reset interface area */
1182         writel(DPMEM_MAGIC, &dp6m_ptr->u);
1183         if (readl(&dp6m_ptr->u) != DPMEM_MAGIC) {
1184             printk("GDT-PCI: Cannot access DPMEM at 0x%lx (shadowed?)\n",
1185                    pcistr->dpmem);
1186             found = FALSE;
1187             for (i = 0xC8000; i < 0xE8000; i += 0x4000) {
1188                 iounmap(ha->brd);
1189                 ha->brd = ioremap(i, sizeof(ushort));
1190                 if (ha->brd == NULL) {
1191                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1192                     return 0;
1193                 }
1194                 if (readw(ha->brd) != 0xffff) {
1195                     TRACE2(("init_pci_mpr() address 0x%x busy\n", i));
1196                     continue;
1197                 }
1198                 iounmap(ha->brd);
1199                 pci_write_config_dword(pcistr->pdev,
1200                                        PCI_BASE_ADDRESS_0, i);
1201                 ha->brd = ioremap(i, sizeof(gdt6m_dpram_str));
1202                 if (ha->brd == NULL) {
1203                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1204                     return 0;
1205                 }
1206                 dp6m_ptr = ha->brd;
1207                 writel(DPMEM_MAGIC, &dp6m_ptr->u);
1208                 if (readl(&dp6m_ptr->u) == DPMEM_MAGIC) {
1209                     printk("GDT-PCI: Use free address at 0x%x\n", i);
1210                     found = TRUE;
1211                     break;
1212                 }
1213             }
1214             if (!found) {
1215                 printk("GDT-PCI: No free address found!\n");
1216                 iounmap(ha->brd);
1217                 return 0;
1218             }
1219         }
1220         memset_io(&dp6m_ptr->u, 0, sizeof(dp6m_ptr->u));
1221
1222         /* disable board interrupts, deinit services */
1223         writeb(readb(&dp6m_ptr->i960r.edoor_en_reg) | 4,
1224                     &dp6m_ptr->i960r.edoor_en_reg);
1225         writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
1226         writeb(0x00, &dp6m_ptr->u.ic.S_Status);
1227         writeb(0x00, &dp6m_ptr->u.ic.Cmd_Index);
1228
1229         writel(pcistr->dpmem, &dp6m_ptr->u.ic.S_Info[0]);
1230         writeb(0xff, &dp6m_ptr->u.ic.S_Cmd_Indx);
1231         writeb(1, &dp6m_ptr->i960r.ldoor_reg);
1232         retries = INIT_RETRIES;
1233         gdth_delay(20);
1234         while (readb(&dp6m_ptr->u.ic.S_Status) != 0xff) {
1235             if (--retries == 0) {
1236                 printk("GDT-PCI: Initialization error (DEINIT failed)\n");
1237                 iounmap(ha->brd);
1238                 return 0;
1239             }
1240             gdth_delay(1);
1241         }
1242         prot_ver = (unchar)readl(&dp6m_ptr->u.ic.S_Info[0]);
1243         writeb(0, &dp6m_ptr->u.ic.S_Status);
1244         if (prot_ver != PROTOCOL_VERSION) {
1245             printk("GDT-PCI: Illegal protocol version\n");
1246             iounmap(ha->brd);
1247             return 0;
1248         }
1249
1250         ha->type = GDT_PCIMPR;
1251         ha->ic_all_size = sizeof(dp6m_ptr->u);
1252
1253         /* special command to controller BIOS */
1254         writel(0x00, &dp6m_ptr->u.ic.S_Info[0]);
1255         writel(0x00, &dp6m_ptr->u.ic.S_Info[1]);
1256         writel(0x00, &dp6m_ptr->u.ic.S_Info[2]);
1257         writel(0x00, &dp6m_ptr->u.ic.S_Info[3]);
1258         writeb(0xfe, &dp6m_ptr->u.ic.S_Cmd_Indx);
1259         writeb(1, &dp6m_ptr->i960r.ldoor_reg);
1260         retries = INIT_RETRIES;
1261         gdth_delay(20);
1262         while (readb(&dp6m_ptr->u.ic.S_Status) != 0xfe) {
1263             if (--retries == 0) {
1264                 printk("GDT-PCI: Initialization error\n");
1265                 iounmap(ha->brd);
1266                 return 0;
1267             }
1268             gdth_delay(1);
1269         }
1270         writeb(0, &dp6m_ptr->u.ic.S_Status);
1271
1272         /* read FW version to detect 64-bit DMA support */
1273         writeb(0xfd, &dp6m_ptr->u.ic.S_Cmd_Indx);
1274         writeb(1, &dp6m_ptr->i960r.ldoor_reg);
1275         retries = INIT_RETRIES;
1276         gdth_delay(20);
1277         while (readb(&dp6m_ptr->u.ic.S_Status) != 0xfd) {
1278             if (--retries == 0) {
1279                 printk("GDT-PCI: Initialization error (DEINIT failed)\n");
1280                 iounmap(ha->brd);
1281                 return 0;
1282             }
1283             gdth_delay(1);
1284         }
1285         prot_ver = (unchar)(readl(&dp6m_ptr->u.ic.S_Info[0]) >> 16);
1286         writeb(0, &dp6m_ptr->u.ic.S_Status);
1287         if (prot_ver < 0x2b)      /* FW < x.43: no 64-bit DMA support */
1288             ha->dma64_support = 0;
1289         else
1290             ha->dma64_support = 1;
1291     }
1292
1293     return 1;
1294 }
1295 #endif /* CONFIG_PCI */
1296
1297 /* controller protocol functions */
1298
1299 static void __init gdth_enable_int(gdth_ha_str *ha)
1300 {
1301     ulong flags;
1302     gdt2_dpram_str __iomem *dp2_ptr;
1303     gdt6_dpram_str __iomem *dp6_ptr;
1304     gdt6m_dpram_str __iomem *dp6m_ptr;
1305
1306     TRACE(("gdth_enable_int() hanum %d\n",ha->hanum));
1307     spin_lock_irqsave(&ha->smp_lock, flags);
1308
1309     if (ha->type == GDT_EISA) {
1310         outb(0xff, ha->bmic + EDOORREG);
1311         outb(0xff, ha->bmic + EDENABREG);
1312         outb(0x01, ha->bmic + EINTENABREG);
1313     } else if (ha->type == GDT_ISA) {
1314         dp2_ptr = ha->brd;
1315         writeb(1, &dp2_ptr->io.irqdel);
1316         writeb(0, &dp2_ptr->u.ic.Cmd_Index);
1317         writeb(1, &dp2_ptr->io.irqen);
1318     } else if (ha->type == GDT_PCI) {
1319         dp6_ptr = ha->brd;
1320         writeb(1, &dp6_ptr->io.irqdel);
1321         writeb(0, &dp6_ptr->u.ic.Cmd_Index);
1322         writeb(1, &dp6_ptr->io.irqen);
1323     } else if (ha->type == GDT_PCINEW) {
1324         outb(0xff, PTR2USHORT(&ha->plx->edoor_reg));
1325         outb(0x03, PTR2USHORT(&ha->plx->control1));
1326     } else if (ha->type == GDT_PCIMPR) {
1327         dp6m_ptr = ha->brd;
1328         writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
1329         writeb(readb(&dp6m_ptr->i960r.edoor_en_reg) & ~4,
1330                     &dp6m_ptr->i960r.edoor_en_reg);
1331     }
1332     spin_unlock_irqrestore(&ha->smp_lock, flags);
1333 }
1334
1335 /* return IStatus if interrupt was from this card else 0 */
1336 static unchar gdth_get_status(gdth_ha_str *ha)
1337 {
1338     unchar IStatus = 0;
1339
1340     TRACE(("gdth_get_status() irq %d ctr_count %d\n", ha->irq, gdth_ctr_count));
1341
1342         if (ha->type == GDT_EISA)
1343             IStatus = inb((ushort)ha->bmic + EDOORREG);
1344         else if (ha->type == GDT_ISA)
1345             IStatus =
1346                 readb(&((gdt2_dpram_str __iomem *)ha->brd)->u.ic.Cmd_Index);
1347         else if (ha->type == GDT_PCI)
1348             IStatus =
1349                 readb(&((gdt6_dpram_str __iomem *)ha->brd)->u.ic.Cmd_Index);
1350         else if (ha->type == GDT_PCINEW)
1351             IStatus = inb(PTR2USHORT(&ha->plx->edoor_reg));
1352         else if (ha->type == GDT_PCIMPR)
1353             IStatus =
1354                 readb(&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.edoor_reg);
1355
1356         return IStatus;
1357 }
1358
1359 static int gdth_test_busy(gdth_ha_str *ha)
1360 {
1361     register int gdtsema0 = 0;
1362
1363     TRACE(("gdth_test_busy() hanum %d\n", ha->hanum));
1364
1365     if (ha->type == GDT_EISA)
1366         gdtsema0 = (int)inb(ha->bmic + SEMA0REG);
1367     else if (ha->type == GDT_ISA)
1368         gdtsema0 = (int)readb(&((gdt2_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
1369     else if (ha->type == GDT_PCI)
1370         gdtsema0 = (int)readb(&((gdt6_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
1371     else if (ha->type == GDT_PCINEW)
1372         gdtsema0 = (int)inb(PTR2USHORT(&ha->plx->sema0_reg));
1373     else if (ha->type == GDT_PCIMPR)
1374         gdtsema0 =
1375             (int)readb(&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.sema0_reg);
1376
1377     return (gdtsema0 & 1);
1378 }
1379
1380
1381 static int gdth_get_cmd_index(gdth_ha_str *ha)
1382 {
1383     int i;
1384
1385     TRACE(("gdth_get_cmd_index() hanum %d\n", ha->hanum));
1386
1387     for (i=0; i<GDTH_MAXCMDS; ++i) {
1388         if (ha->cmd_tab[i].cmnd == UNUSED_CMND) {
1389             ha->cmd_tab[i].cmnd = ha->pccb->RequestBuffer;
1390             ha->cmd_tab[i].service = ha->pccb->Service;
1391             ha->pccb->CommandIndex = (ulong32)i+2;
1392             return (i+2);
1393         }
1394     }
1395     return 0;
1396 }
1397
1398
1399 static void gdth_set_sema0(gdth_ha_str *ha)
1400 {
1401     TRACE(("gdth_set_sema0() hanum %d\n", ha->hanum));
1402
1403     if (ha->type == GDT_EISA) {
1404         outb(1, ha->bmic + SEMA0REG);
1405     } else if (ha->type == GDT_ISA) {
1406         writeb(1, &((gdt2_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
1407     } else if (ha->type == GDT_PCI) {
1408         writeb(1, &((gdt6_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
1409     } else if (ha->type == GDT_PCINEW) {
1410         outb(1, PTR2USHORT(&ha->plx->sema0_reg));
1411     } else if (ha->type == GDT_PCIMPR) {
1412         writeb(1, &((gdt6m_dpram_str __iomem *)ha->brd)->i960r.sema0_reg);
1413     }
1414 }
1415
1416
1417 static void gdth_copy_command(gdth_ha_str *ha)
1418 {
1419     register gdth_cmd_str *cmd_ptr;
1420     register gdt6m_dpram_str __iomem *dp6m_ptr;
1421     register gdt6c_dpram_str __iomem *dp6c_ptr;
1422     gdt6_dpram_str __iomem *dp6_ptr;
1423     gdt2_dpram_str __iomem *dp2_ptr;
1424     ushort cp_count,dp_offset,cmd_no;
1425
1426     TRACE(("gdth_copy_command() hanum %d\n", ha->hanum));
1427
1428     cp_count = ha->cmd_len;
1429     dp_offset= ha->cmd_offs_dpmem;
1430     cmd_no   = ha->cmd_cnt;
1431     cmd_ptr  = ha->pccb;
1432
1433     ++ha->cmd_cnt;
1434     if (ha->type == GDT_EISA)
1435         return;                                 /* no DPMEM, no copy */
1436
1437     /* set cpcount dword aligned */
1438     if (cp_count & 3)
1439         cp_count += (4 - (cp_count & 3));
1440
1441     ha->cmd_offs_dpmem += cp_count;
1442
1443     /* set offset and service, copy command to DPMEM */
1444     if (ha->type == GDT_ISA) {
1445         dp2_ptr = ha->brd;
1446         writew(dp_offset + DPMEM_COMMAND_OFFSET,
1447                     &dp2_ptr->u.ic.comm_queue[cmd_no].offset);
1448         writew((ushort)cmd_ptr->Service,
1449                     &dp2_ptr->u.ic.comm_queue[cmd_no].serv_id);
1450         memcpy_toio(&dp2_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
1451     } else if (ha->type == GDT_PCI) {
1452         dp6_ptr = ha->brd;
1453         writew(dp_offset + DPMEM_COMMAND_OFFSET,
1454                     &dp6_ptr->u.ic.comm_queue[cmd_no].offset);
1455         writew((ushort)cmd_ptr->Service,
1456                     &dp6_ptr->u.ic.comm_queue[cmd_no].serv_id);
1457         memcpy_toio(&dp6_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
1458     } else if (ha->type == GDT_PCINEW) {
1459         dp6c_ptr = ha->brd;
1460         writew(dp_offset + DPMEM_COMMAND_OFFSET,
1461                     &dp6c_ptr->u.ic.comm_queue[cmd_no].offset);
1462         writew((ushort)cmd_ptr->Service,
1463                     &dp6c_ptr->u.ic.comm_queue[cmd_no].serv_id);
1464         memcpy_toio(&dp6c_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
1465     } else if (ha->type == GDT_PCIMPR) {
1466         dp6m_ptr = ha->brd;
1467         writew(dp_offset + DPMEM_COMMAND_OFFSET,
1468                     &dp6m_ptr->u.ic.comm_queue[cmd_no].offset);
1469         writew((ushort)cmd_ptr->Service,
1470                     &dp6m_ptr->u.ic.comm_queue[cmd_no].serv_id);
1471         memcpy_toio(&dp6m_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
1472     }
1473 }
1474
1475
1476 static void gdth_release_event(gdth_ha_str *ha)
1477 {
1478     TRACE(("gdth_release_event() hanum %d\n", ha->hanum));
1479
1480 #ifdef GDTH_STATISTICS
1481     {
1482         ulong32 i,j;
1483         for (i=0,j=0; j<GDTH_MAXCMDS; ++j) {
1484             if (ha->cmd_tab[j].cmnd != UNUSED_CMND)
1485                 ++i;
1486         }
1487         if (max_index < i) {
1488             max_index = i;
1489             TRACE3(("GDT: max_index = %d\n",(ushort)i));
1490         }
1491     }
1492 #endif
1493
1494     if (ha->pccb->OpCode == GDT_INIT)
1495         ha->pccb->Service |= 0x80;
1496
1497     if (ha->type == GDT_EISA) {
1498         if (ha->pccb->OpCode == GDT_INIT)               /* store DMA buffer */
1499             outl(ha->ccb_phys, ha->bmic + MAILBOXREG);
1500         outb(ha->pccb->Service, ha->bmic + LDOORREG);
1501     } else if (ha->type == GDT_ISA) {
1502         writeb(0, &((gdt2_dpram_str __iomem *)ha->brd)->io.event);
1503     } else if (ha->type == GDT_PCI) {
1504         writeb(0, &((gdt6_dpram_str __iomem *)ha->brd)->io.event);
1505     } else if (ha->type == GDT_PCINEW) {
1506         outb(1, PTR2USHORT(&ha->plx->ldoor_reg));
1507     } else if (ha->type == GDT_PCIMPR) {
1508         writeb(1, &((gdt6m_dpram_str __iomem *)ha->brd)->i960r.ldoor_reg);
1509     }
1510 }
1511
1512 static int gdth_wait(gdth_ha_str *ha, int index, ulong32 time)
1513 {
1514     int answer_found = FALSE;
1515     int wait_index = 0;
1516
1517     TRACE(("gdth_wait() hanum %d index %d time %d\n", ha->hanum, index, time));
1518
1519     if (index == 0)
1520         return 1;                               /* no wait required */
1521
1522     do {
1523         __gdth_interrupt(ha, true, &wait_index);
1524         if (wait_index == index) {
1525             answer_found = TRUE;
1526             break;
1527         }
1528         gdth_delay(1);
1529     } while (--time);
1530
1531     while (gdth_test_busy(ha))
1532         gdth_delay(0);
1533
1534     return (answer_found);
1535 }
1536
1537
1538 static int gdth_internal_cmd(gdth_ha_str *ha, unchar service, ushort opcode,
1539                                             ulong32 p1, ulong64 p2, ulong64 p3)
1540 {
1541     register gdth_cmd_str *cmd_ptr;
1542     int retries,index;
1543
1544     TRACE2(("gdth_internal_cmd() service %d opcode %d\n",service,opcode));
1545
1546     cmd_ptr = ha->pccb;
1547     memset((char*)cmd_ptr,0,sizeof(gdth_cmd_str));
1548
1549     /* make command  */
1550     for (retries = INIT_RETRIES;;) {
1551         cmd_ptr->Service          = service;
1552         cmd_ptr->RequestBuffer    = INTERNAL_CMND;
1553         if (!(index=gdth_get_cmd_index(ha))) {
1554             TRACE(("GDT: No free command index found\n"));
1555             return 0;
1556         }
1557         gdth_set_sema0(ha);
1558         cmd_ptr->OpCode           = opcode;
1559         cmd_ptr->BoardNode        = LOCALBOARD;
1560         if (service == CACHESERVICE) {
1561             if (opcode == GDT_IOCTL) {
1562                 cmd_ptr->u.ioctl.subfunc = p1;
1563                 cmd_ptr->u.ioctl.channel = (ulong32)p2;
1564                 cmd_ptr->u.ioctl.param_size = (ushort)p3;
1565                 cmd_ptr->u.ioctl.p_param = ha->scratch_phys;
1566             } else {
1567                 if (ha->cache_feat & GDT_64BIT) {
1568                     cmd_ptr->u.cache64.DeviceNo = (ushort)p1;
1569                     cmd_ptr->u.cache64.BlockNo  = p2;
1570                 } else {
1571                     cmd_ptr->u.cache.DeviceNo = (ushort)p1;
1572                     cmd_ptr->u.cache.BlockNo  = (ulong32)p2;
1573                 }
1574             }
1575         } else if (service == SCSIRAWSERVICE) {
1576             if (ha->raw_feat & GDT_64BIT) {
1577                 cmd_ptr->u.raw64.direction  = p1;
1578                 cmd_ptr->u.raw64.bus        = (unchar)p2;
1579                 cmd_ptr->u.raw64.target     = (unchar)p3;
1580                 cmd_ptr->u.raw64.lun        = (unchar)(p3 >> 8);
1581             } else {
1582                 cmd_ptr->u.raw.direction  = p1;
1583                 cmd_ptr->u.raw.bus        = (unchar)p2;
1584                 cmd_ptr->u.raw.target     = (unchar)p3;
1585                 cmd_ptr->u.raw.lun        = (unchar)(p3 >> 8);
1586             }
1587         } else if (service == SCREENSERVICE) {
1588             if (opcode == GDT_REALTIME) {
1589                 *(ulong32 *)&cmd_ptr->u.screen.su.data[0] = p1;
1590                 *(ulong32 *)&cmd_ptr->u.screen.su.data[4] = (ulong32)p2;
1591                 *(ulong32 *)&cmd_ptr->u.screen.su.data[8] = (ulong32)p3;
1592             }
1593         }
1594         ha->cmd_len          = sizeof(gdth_cmd_str);
1595         ha->cmd_offs_dpmem   = 0;
1596         ha->cmd_cnt          = 0;
1597         gdth_copy_command(ha);
1598         gdth_release_event(ha);
1599         gdth_delay(20);
1600         if (!gdth_wait(ha, index, INIT_TIMEOUT)) {
1601             printk("GDT: Initialization error (timeout service %d)\n",service);
1602             return 0;
1603         }
1604         if (ha->status != S_BSY || --retries == 0)
1605             break;
1606         gdth_delay(1);
1607     }
1608
1609     return (ha->status != S_OK ? 0:1);
1610 }
1611
1612
1613 /* search for devices */
1614
1615 static int __init gdth_search_drives(gdth_ha_str *ha)
1616 {
1617     ushort cdev_cnt, i;
1618     int ok;
1619     ulong32 bus_no, drv_cnt, drv_no, j;
1620     gdth_getch_str *chn;
1621     gdth_drlist_str *drl;
1622     gdth_iochan_str *ioc;
1623     gdth_raw_iochan_str *iocr;
1624     gdth_arcdl_str *alst;
1625     gdth_alist_str *alst2;
1626     gdth_oem_str_ioctl *oemstr;
1627 #ifdef INT_COAL
1628     gdth_perf_modes *pmod;
1629 #endif
1630
1631 #ifdef GDTH_RTC
1632     unchar rtc[12];
1633     ulong flags;
1634 #endif
1635
1636     TRACE(("gdth_search_drives() hanum %d\n", ha->hanum));
1637     ok = 0;
1638
1639     /* initialize controller services, at first: screen service */
1640     ha->screen_feat = 0;
1641     if (!force_dma32) {
1642         ok = gdth_internal_cmd(ha, SCREENSERVICE, GDT_X_INIT_SCR, 0, 0, 0);
1643         if (ok)
1644             ha->screen_feat = GDT_64BIT;
1645     }
1646     if (force_dma32 || (!ok && ha->status == (ushort)S_NOFUNC))
1647         ok = gdth_internal_cmd(ha, SCREENSERVICE, GDT_INIT, 0, 0, 0);
1648     if (!ok) {
1649         printk("GDT-HA %d: Initialization error screen service (code %d)\n",
1650                ha->hanum, ha->status);
1651         return 0;
1652     }
1653     TRACE2(("gdth_search_drives(): SCREENSERVICE initialized\n"));
1654
1655 #ifdef GDTH_RTC
1656     /* read realtime clock info, send to controller */
1657     /* 1. wait for the falling edge of update flag */
1658     spin_lock_irqsave(&rtc_lock, flags);
1659     for (j = 0; j < 1000000; ++j)
1660         if (CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP)
1661             break;
1662     for (j = 0; j < 1000000; ++j)
1663         if (!(CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP))
1664             break;
1665     /* 2. read info */
1666     do {
1667         for (j = 0; j < 12; ++j)
1668             rtc[j] = CMOS_READ(j);
1669     } while (rtc[0] != CMOS_READ(0));
1670     spin_unlock_irqrestore(&rtc_lock, flags);
1671     TRACE2(("gdth_search_drives(): RTC: %x/%x/%x\n",*(ulong32 *)&rtc[0],
1672             *(ulong32 *)&rtc[4], *(ulong32 *)&rtc[8]));
1673     /* 3. send to controller firmware */
1674     gdth_internal_cmd(ha, SCREENSERVICE, GDT_REALTIME, *(ulong32 *)&rtc[0],
1675                       *(ulong32 *)&rtc[4], *(ulong32 *)&rtc[8]);
1676 #endif
1677
1678     /* unfreeze all IOs */
1679     gdth_internal_cmd(ha, CACHESERVICE, GDT_UNFREEZE_IO, 0, 0, 0);
1680
1681     /* initialize cache service */
1682     ha->cache_feat = 0;
1683     if (!force_dma32) {
1684         ok = gdth_internal_cmd(ha, CACHESERVICE, GDT_X_INIT_HOST, LINUX_OS,
1685                                                                          0, 0);
1686         if (ok)
1687             ha->cache_feat = GDT_64BIT;
1688     }
1689     if (force_dma32 || (!ok && ha->status == (ushort)S_NOFUNC))
1690         ok = gdth_internal_cmd(ha, CACHESERVICE, GDT_INIT, LINUX_OS, 0, 0);
1691     if (!ok) {
1692         printk("GDT-HA %d: Initialization error cache service (code %d)\n",
1693                ha->hanum, ha->status);
1694         return 0;
1695     }
1696     TRACE2(("gdth_search_drives(): CACHESERVICE initialized\n"));
1697     cdev_cnt = (ushort)ha->info;
1698     ha->fw_vers = ha->service;
1699
1700 #ifdef INT_COAL
1701     if (ha->type == GDT_PCIMPR) {
1702         /* set perf. modes */
1703         pmod = (gdth_perf_modes *)ha->pscratch;
1704         pmod->version          = 1;
1705         pmod->st_mode          = 1;    /* enable one status buffer */
1706         *((ulong64 *)&pmod->st_buff_addr1) = ha->coal_stat_phys;
1707         pmod->st_buff_indx1    = COALINDEX;
1708         pmod->st_buff_addr2    = 0;
1709         pmod->st_buff_u_addr2  = 0;
1710         pmod->st_buff_indx2    = 0;
1711         pmod->st_buff_size     = sizeof(gdth_coal_status) * MAXOFFSETS;
1712         pmod->cmd_mode         = 0;    // disable all cmd buffers
1713         pmod->cmd_buff_addr1   = 0;
1714         pmod->cmd_buff_u_addr1 = 0;
1715         pmod->cmd_buff_indx1   = 0;
1716         pmod->cmd_buff_addr2   = 0;
1717         pmod->cmd_buff_u_addr2 = 0;
1718         pmod->cmd_buff_indx2   = 0;
1719         pmod->cmd_buff_size    = 0;
1720         pmod->reserved1        = 0;
1721         pmod->reserved2        = 0;
1722         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, SET_PERF_MODES,
1723                               INVALID_CHANNEL,sizeof(gdth_perf_modes))) {
1724             printk("GDT-HA %d: Interrupt coalescing activated\n", ha->hanum);
1725         }
1726     }
1727 #endif
1728
1729     /* detect number of buses - try new IOCTL */
1730     iocr = (gdth_raw_iochan_str *)ha->pscratch;
1731     iocr->hdr.version        = 0xffffffff;
1732     iocr->hdr.list_entries   = MAXBUS;
1733     iocr->hdr.first_chan     = 0;
1734     iocr->hdr.last_chan      = MAXBUS-1;
1735     iocr->hdr.list_offset    = GDTOFFSOF(gdth_raw_iochan_str, list[0]);
1736     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, IOCHAN_RAW_DESC,
1737                           INVALID_CHANNEL,sizeof(gdth_raw_iochan_str))) {
1738         TRACE2(("IOCHAN_RAW_DESC supported!\n"));
1739         ha->bus_cnt = iocr->hdr.chan_count;
1740         for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
1741             if (iocr->list[bus_no].proc_id < MAXID)
1742                 ha->bus_id[bus_no] = iocr->list[bus_no].proc_id;
1743             else
1744                 ha->bus_id[bus_no] = 0xff;
1745         }
1746     } else {
1747         /* old method */
1748         chn = (gdth_getch_str *)ha->pscratch;
1749         for (bus_no = 0; bus_no < MAXBUS; ++bus_no) {
1750             chn->channel_no = bus_no;
1751             if (!gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1752                                    SCSI_CHAN_CNT | L_CTRL_PATTERN,
1753                                    IO_CHANNEL | INVALID_CHANNEL,
1754                                    sizeof(gdth_getch_str))) {
1755                 if (bus_no == 0) {
1756                     printk("GDT-HA %d: Error detecting channel count (0x%x)\n",
1757                            ha->hanum, ha->status);
1758                     return 0;
1759                 }
1760                 break;
1761             }
1762             if (chn->siop_id < MAXID)
1763                 ha->bus_id[bus_no] = chn->siop_id;
1764             else
1765                 ha->bus_id[bus_no] = 0xff;
1766         }
1767         ha->bus_cnt = (unchar)bus_no;
1768     }
1769     TRACE2(("gdth_search_drives() %d channels\n",ha->bus_cnt));
1770
1771     /* read cache configuration */
1772     if (!gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, CACHE_INFO,
1773                            INVALID_CHANNEL,sizeof(gdth_cinfo_str))) {
1774         printk("GDT-HA %d: Initialization error cache service (code %d)\n",
1775                ha->hanum, ha->status);
1776         return 0;
1777     }
1778     ha->cpar = ((gdth_cinfo_str *)ha->pscratch)->cpar;
1779     TRACE2(("gdth_search_drives() cinfo: vs %x sta %d str %d dw %d b %d\n",
1780             ha->cpar.version,ha->cpar.state,ha->cpar.strategy,
1781             ha->cpar.write_back,ha->cpar.block_size));
1782
1783     /* read board info and features */
1784     ha->more_proc = FALSE;
1785     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, BOARD_INFO,
1786                           INVALID_CHANNEL,sizeof(gdth_binfo_str))) {
1787         memcpy(&ha->binfo, (gdth_binfo_str *)ha->pscratch,
1788                sizeof(gdth_binfo_str));
1789         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, BOARD_FEATURES,
1790                               INVALID_CHANNEL,sizeof(gdth_bfeat_str))) {
1791             TRACE2(("BOARD_INFO/BOARD_FEATURES supported\n"));
1792             ha->bfeat = *(gdth_bfeat_str *)ha->pscratch;
1793             ha->more_proc = TRUE;
1794         }
1795     } else {
1796         TRACE2(("BOARD_INFO requires firmware >= 1.10/2.08\n"));
1797         strcpy(ha->binfo.type_string, gdth_ctr_name(ha));
1798     }
1799     TRACE2(("Controller name: %s\n",ha->binfo.type_string));
1800
1801     /* read more informations */
1802     if (ha->more_proc) {
1803         /* physical drives, channel addresses */
1804         ioc = (gdth_iochan_str *)ha->pscratch;
1805         ioc->hdr.version        = 0xffffffff;
1806         ioc->hdr.list_entries   = MAXBUS;
1807         ioc->hdr.first_chan     = 0;
1808         ioc->hdr.last_chan      = MAXBUS-1;
1809         ioc->hdr.list_offset    = GDTOFFSOF(gdth_iochan_str, list[0]);
1810         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, IOCHAN_DESC,
1811                               INVALID_CHANNEL,sizeof(gdth_iochan_str))) {
1812             for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
1813                 ha->raw[bus_no].address = ioc->list[bus_no].address;
1814                 ha->raw[bus_no].local_no = ioc->list[bus_no].local_no;
1815             }
1816         } else {
1817             for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
1818                 ha->raw[bus_no].address = IO_CHANNEL;
1819                 ha->raw[bus_no].local_no = bus_no;
1820             }
1821         }
1822         for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
1823             chn = (gdth_getch_str *)ha->pscratch;
1824             chn->channel_no = ha->raw[bus_no].local_no;
1825             if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1826                                   SCSI_CHAN_CNT | L_CTRL_PATTERN,
1827                                   ha->raw[bus_no].address | INVALID_CHANNEL,
1828                                   sizeof(gdth_getch_str))) {
1829                 ha->raw[bus_no].pdev_cnt = chn->drive_cnt;
1830                 TRACE2(("Channel %d: %d phys. drives\n",
1831                         bus_no,chn->drive_cnt));
1832             }
1833             if (ha->raw[bus_no].pdev_cnt > 0) {
1834                 drl = (gdth_drlist_str *)ha->pscratch;
1835                 drl->sc_no = ha->raw[bus_no].local_no;
1836                 drl->sc_cnt = ha->raw[bus_no].pdev_cnt;
1837                 if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1838                                       SCSI_DR_LIST | L_CTRL_PATTERN,
1839                                       ha->raw[bus_no].address | INVALID_CHANNEL,
1840                                       sizeof(gdth_drlist_str))) {
1841                     for (j = 0; j < ha->raw[bus_no].pdev_cnt; ++j)
1842                         ha->raw[bus_no].id_list[j] = drl->sc_list[j];
1843                 } else {
1844                     ha->raw[bus_no].pdev_cnt = 0;
1845                 }
1846             }
1847         }
1848
1849         /* logical drives */
1850         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, CACHE_DRV_CNT,
1851                               INVALID_CHANNEL,sizeof(ulong32))) {
1852             drv_cnt = *(ulong32 *)ha->pscratch;
1853             if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, CACHE_DRV_LIST,
1854                                   INVALID_CHANNEL,drv_cnt * sizeof(ulong32))) {
1855                 for (j = 0; j < drv_cnt; ++j) {
1856                     drv_no = ((ulong32 *)ha->pscratch)[j];
1857                     if (drv_no < MAX_LDRIVES) {
1858                         ha->hdr[drv_no].is_logdrv = TRUE;
1859                         TRACE2(("Drive %d is log. drive\n",drv_no));
1860                     }
1861                 }
1862             }
1863             alst = (gdth_arcdl_str *)ha->pscratch;
1864             alst->entries_avail = MAX_LDRIVES;
1865             alst->first_entry = 0;
1866             alst->list_offset = GDTOFFSOF(gdth_arcdl_str, list[0]);
1867             if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1868                                   ARRAY_DRV_LIST2 | LA_CTRL_PATTERN,
1869                                   INVALID_CHANNEL, sizeof(gdth_arcdl_str) +
1870                                   (alst->entries_avail-1) * sizeof(gdth_alist_str))) {
1871                 for (j = 0; j < alst->entries_init; ++j) {
1872                     ha->hdr[j].is_arraydrv = alst->list[j].is_arrayd;
1873                     ha->hdr[j].is_master = alst->list[j].is_master;
1874                     ha->hdr[j].is_parity = alst->list[j].is_parity;
1875                     ha->hdr[j].is_hotfix = alst->list[j].is_hotfix;
1876                     ha->hdr[j].master_no = alst->list[j].cd_handle;
1877                 }
1878             } else if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1879                                          ARRAY_DRV_LIST | LA_CTRL_PATTERN,
1880                                          0, 35 * sizeof(gdth_alist_str))) {
1881                 for (j = 0; j < 35; ++j) {
1882                     alst2 = &((gdth_alist_str *)ha->pscratch)[j];
1883                     ha->hdr[j].is_arraydrv = alst2->is_arrayd;
1884                     ha->hdr[j].is_master = alst2->is_master;
1885                     ha->hdr[j].is_parity = alst2->is_parity;
1886                     ha->hdr[j].is_hotfix = alst2->is_hotfix;
1887                     ha->hdr[j].master_no = alst2->cd_handle;
1888                 }
1889             }
1890         }
1891     }
1892
1893     /* initialize raw service */
1894     ha->raw_feat = 0;
1895     if (!force_dma32) {
1896         ok = gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_X_INIT_RAW, 0, 0, 0);
1897         if (ok)
1898             ha->raw_feat = GDT_64BIT;
1899     }
1900     if (force_dma32 || (!ok && ha->status == (ushort)S_NOFUNC))
1901         ok = gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_INIT, 0, 0, 0);
1902     if (!ok) {
1903         printk("GDT-HA %d: Initialization error raw service (code %d)\n",
1904                ha->hanum, ha->status);
1905         return 0;
1906     }
1907     TRACE2(("gdth_search_drives(): RAWSERVICE initialized\n"));
1908
1909     /* set/get features raw service (scatter/gather) */
1910     if (gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_SET_FEAT, SCATTER_GATHER,
1911                           0, 0)) {
1912         TRACE2(("gdth_search_drives(): set features RAWSERVICE OK\n"));
1913         if (gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_GET_FEAT, 0, 0, 0)) {
1914             TRACE2(("gdth_search_dr(): get feat RAWSERVICE %d\n",
1915                     ha->info));
1916             ha->raw_feat |= (ushort)ha->info;
1917         }
1918     }
1919
1920     /* set/get features cache service (equal to raw service) */
1921     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_SET_FEAT, 0,
1922                           SCATTER_GATHER,0)) {
1923         TRACE2(("gdth_search_drives(): set features CACHESERVICE OK\n"));
1924         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_GET_FEAT, 0, 0, 0)) {
1925             TRACE2(("gdth_search_dr(): get feat CACHESERV. %d\n",
1926                     ha->info));
1927             ha->cache_feat |= (ushort)ha->info;
1928         }
1929     }
1930
1931     /* reserve drives for raw service */
1932     if (reserve_mode != 0) {
1933         gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_RESERVE_ALL,
1934                           reserve_mode == 1 ? 1 : 3, 0, 0);
1935         TRACE2(("gdth_search_drives(): RESERVE_ALL code %d\n",
1936                 ha->status));
1937     }
1938     for (i = 0; i < MAX_RES_ARGS; i += 4) {
1939         if (reserve_list[i] == ha->hanum && reserve_list[i+1] < ha->bus_cnt &&
1940             reserve_list[i+2] < ha->tid_cnt && reserve_list[i+3] < MAXLUN) {
1941             TRACE2(("gdth_search_drives(): reserve ha %d bus %d id %d lun %d\n",
1942                     reserve_list[i], reserve_list[i+1],
1943                     reserve_list[i+2], reserve_list[i+3]));
1944             if (!gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_RESERVE, 0,
1945                                    reserve_list[i+1], reserve_list[i+2] |
1946                                    (reserve_list[i+3] << 8))) {
1947                 printk("GDT-HA %d: Error raw service (RESERVE, code %d)\n",
1948                        ha->hanum, ha->status);
1949              }
1950         }
1951     }
1952
1953     /* Determine OEM string using IOCTL */
1954     oemstr = (gdth_oem_str_ioctl *)ha->pscratch;
1955     oemstr->params.ctl_version = 0x01;
1956     oemstr->params.buffer_size = sizeof(oemstr->text);
1957     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1958                           CACHE_READ_OEM_STRING_RECORD,INVALID_CHANNEL,
1959                           sizeof(gdth_oem_str_ioctl))) {
1960         TRACE2(("gdth_search_drives(): CACHE_READ_OEM_STRING_RECORD OK\n"));
1961         printk("GDT-HA %d: Vendor: %s Name: %s\n",
1962                ha->hanum, oemstr->text.oem_company_name, ha->binfo.type_string);
1963         /* Save the Host Drive inquiry data */
1964         strlcpy(ha->oem_name,oemstr->text.scsi_host_drive_inquiry_vendor_id,
1965                 sizeof(ha->oem_name));
1966     } else {
1967         /* Old method, based on PCI ID */
1968         TRACE2(("gdth_search_drives(): CACHE_READ_OEM_STRING_RECORD failed\n"));
1969         printk("GDT-HA %d: Name: %s\n",
1970                ha->hanum, ha->binfo.type_string);
1971         if (ha->oem_id == OEM_ID_INTEL)
1972             strlcpy(ha->oem_name,"Intel  ", sizeof(ha->oem_name));
1973         else
1974             strlcpy(ha->oem_name,"ICP    ", sizeof(ha->oem_name));
1975     }
1976
1977     /* scanning for host drives */
1978     for (i = 0; i < cdev_cnt; ++i)
1979         gdth_analyse_hdrive(ha, i);
1980
1981     TRACE(("gdth_search_drives() OK\n"));
1982     return 1;
1983 }
1984
1985 static int gdth_analyse_hdrive(gdth_ha_str *ha, ushort hdrive)
1986 {
1987     ulong32 drv_cyls;
1988     int drv_hds, drv_secs;
1989
1990     TRACE(("gdth_analyse_hdrive() hanum %d drive %d\n", ha->hanum, hdrive));
1991     if (hdrive >= MAX_HDRIVES)
1992         return 0;
1993
1994     if (!gdth_internal_cmd(ha, CACHESERVICE, GDT_INFO, hdrive, 0, 0))
1995         return 0;
1996     ha->hdr[hdrive].present = TRUE;
1997     ha->hdr[hdrive].size = ha->info;
1998
1999     /* evaluate mapping (sectors per head, heads per cylinder) */
2000     ha->hdr[hdrive].size &= ~SECS32;
2001     if (ha->info2 == 0) {
2002         gdth_eval_mapping(ha->hdr[hdrive].size,&drv_cyls,&drv_hds,&drv_secs);
2003     } else {
2004         drv_hds = ha->info2 & 0xff;
2005         drv_secs = (ha->info2 >> 8) & 0xff;
2006         drv_cyls = (ulong32)ha->hdr[hdrive].size / drv_hds / drv_secs;
2007     }
2008     ha->hdr[hdrive].heads = (unchar)drv_hds;
2009     ha->hdr[hdrive].secs  = (unchar)drv_secs;
2010     /* round size */
2011     ha->hdr[hdrive].size  = drv_cyls * drv_hds * drv_secs;
2012
2013     if (ha->cache_feat & GDT_64BIT) {
2014         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_X_INFO, hdrive, 0, 0)
2015             && ha->info2 != 0) {
2016             ha->hdr[hdrive].size = ((ulong64)ha->info2 << 32) | ha->info;
2017         }
2018     }
2019     TRACE2(("gdth_search_dr() cdr. %d size %d hds %d scs %d\n",
2020             hdrive,ha->hdr[hdrive].size,drv_hds,drv_secs));
2021
2022     /* get informations about device */
2023     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_DEVTYPE, hdrive, 0, 0)) {
2024         TRACE2(("gdth_search_dr() cache drive %d devtype %d\n",
2025                 hdrive,ha->info));
2026         ha->hdr[hdrive].devtype = (ushort)ha->info;
2027     }
2028
2029     /* cluster info */
2030     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_CLUST_INFO, hdrive, 0, 0)) {
2031         TRACE2(("gdth_search_dr() cache drive %d cluster info %d\n",
2032                 hdrive,ha->info));
2033         if (!shared_access)
2034             ha->hdr[hdrive].cluster_type = (unchar)ha->info;
2035     }
2036
2037     /* R/W attributes */
2038     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_RW_ATTRIBS, hdrive, 0, 0)) {
2039         TRACE2(("gdth_search_dr() cache drive %d r/w attrib. %d\n",
2040                 hdrive,ha->info));
2041         ha->hdr[hdrive].rw_attribs = (unchar)ha->info;
2042     }
2043
2044     return 1;
2045 }
2046
2047
2048 /* command queueing/sending functions */
2049
2050 static void gdth_putq(gdth_ha_str *ha, Scsi_Cmnd *scp, unchar priority)
2051 {
2052     struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
2053     register Scsi_Cmnd *pscp;
2054     register Scsi_Cmnd *nscp;
2055     ulong flags;
2056     unchar b, t;
2057
2058     TRACE(("gdth_putq() priority %d\n",priority));
2059     spin_lock_irqsave(&ha->smp_lock, flags);
2060
2061     if (!cmndinfo->internal_command) {
2062         cmndinfo->priority = priority;
2063         b = scp->device->channel;
2064         t = scp->device->id;
2065         if (priority >= DEFAULT_PRI) {
2066             if ((b != ha->virt_bus && ha->raw[BUS_L2P(ha,b)].lock) ||
2067                 (b==ha->virt_bus && t<MAX_HDRIVES && ha->hdr[t].lock)) {
2068                 TRACE2(("gdth_putq(): locked IO ->update_timeout()\n"));
2069                 cmndinfo->timeout = gdth_update_timeout(scp, 0);
2070             }
2071         }
2072     }
2073
2074     if (ha->req_first==NULL) {
2075         ha->req_first = scp;                    /* queue was empty */
2076         scp->SCp.ptr = NULL;
2077     } else {                                    /* queue not empty */
2078         pscp = ha->req_first;
2079         nscp = (Scsi_Cmnd *)pscp->SCp.ptr;
2080         /* priority: 0-highest,..,0xff-lowest */
2081         while (nscp && gdth_cmnd_priv(nscp)->priority <= priority) {
2082             pscp = nscp;
2083             nscp = (Scsi_Cmnd *)pscp->SCp.ptr;
2084         }
2085         pscp->SCp.ptr = (char *)scp;
2086         scp->SCp.ptr  = (char *)nscp;
2087     }
2088     spin_unlock_irqrestore(&ha->smp_lock, flags);
2089
2090 #ifdef GDTH_STATISTICS
2091     flags = 0;
2092     for (nscp=ha->req_first; nscp; nscp=(Scsi_Cmnd*)nscp->SCp.ptr)
2093         ++flags;
2094     if (max_rq < flags) {
2095         max_rq = flags;
2096         TRACE3(("GDT: max_rq = %d\n",(ushort)max_rq));
2097     }
2098 #endif
2099 }
2100
2101 static void gdth_next(gdth_ha_str *ha)
2102 {
2103     register Scsi_Cmnd *pscp;
2104     register Scsi_Cmnd *nscp;
2105     unchar b, t, l, firsttime;
2106     unchar this_cmd, next_cmd;
2107     ulong flags = 0;
2108     int cmd_index;
2109
2110     TRACE(("gdth_next() hanum %d\n", ha->hanum));
2111     if (!gdth_polling)
2112         spin_lock_irqsave(&ha->smp_lock, flags);
2113
2114     ha->cmd_cnt = ha->cmd_offs_dpmem = 0;
2115     this_cmd = firsttime = TRUE;
2116     next_cmd = gdth_polling ? FALSE:TRUE;
2117     cmd_index = 0;
2118
2119     for (nscp = pscp = ha->req_first; nscp; nscp = (Scsi_Cmnd *)nscp->SCp.ptr) {
2120         struct gdth_cmndinfo *nscp_cmndinfo = gdth_cmnd_priv(nscp);
2121         if (nscp != pscp && nscp != (Scsi_Cmnd *)pscp->SCp.ptr)
2122             pscp = (Scsi_Cmnd *)pscp->SCp.ptr;
2123         if (!nscp_cmndinfo->internal_command) {
2124             b = nscp->device->channel;
2125             t = nscp->device->id;
2126             l = nscp->device->lun;
2127             if (nscp_cmndinfo->priority >= DEFAULT_PRI) {
2128                 if ((b != ha->virt_bus && ha->raw[BUS_L2P(ha,b)].lock) ||
2129                     (b == ha->virt_bus && t < MAX_HDRIVES && ha->hdr[t].lock))
2130                     continue;
2131             }
2132         } else
2133             b = t = l = 0;
2134
2135         if (firsttime) {
2136             if (gdth_test_busy(ha)) {        /* controller busy ? */
2137                 TRACE(("gdth_next() controller %d busy !\n", ha->hanum));
2138                 if (!gdth_polling) {
2139                     spin_unlock_irqrestore(&ha->smp_lock, flags);
2140                     return;
2141                 }
2142                 while (gdth_test_busy(ha))
2143                     gdth_delay(1);
2144             }
2145             firsttime = FALSE;
2146         }
2147
2148         if (!nscp_cmndinfo->internal_command) {
2149         if (nscp_cmndinfo->phase == -1) {
2150             nscp_cmndinfo->phase = CACHESERVICE;           /* default: cache svc. */
2151             if (nscp->cmnd[0] == TEST_UNIT_READY) {
2152                 TRACE2(("TEST_UNIT_READY Bus %d Id %d LUN %d\n",
2153                         b, t, l));
2154                 /* TEST_UNIT_READY -> set scan mode */
2155                 if ((ha->scan_mode & 0x0f) == 0) {
2156                     if (b == 0 && t == 0 && l == 0) {
2157                         ha->scan_mode |= 1;
2158                         TRACE2(("Scan mode: 0x%x\n", ha->scan_mode));
2159                     }
2160                 } else if ((ha->scan_mode & 0x0f) == 1) {
2161                     if (b == 0 && ((t == 0 && l == 1) ||
2162                          (t == 1 && l == 0))) {
2163                         nscp_cmndinfo->OpCode = GDT_SCAN_START;
2164                         nscp_cmndinfo->phase = ((ha->scan_mode & 0x10 ? 1:0) << 8)
2165                             | SCSIRAWSERVICE;
2166                         ha->scan_mode = 0x12;
2167                         TRACE2(("Scan mode: 0x%x (SCAN_START)\n",
2168                                 ha->scan_mode));
2169                     } else {
2170                         ha->scan_mode &= 0x10;
2171                         TRACE2(("Scan mode: 0x%x\n", ha->scan_mode));
2172                     }
2173                 } else if (ha->scan_mode == 0x12) {
2174                     if (b == ha->bus_cnt && t == ha->tid_cnt-1) {
2175                         nscp_cmndinfo->phase = SCSIRAWSERVICE;
2176                         nscp_cmndinfo->OpCode = GDT_SCAN_END;
2177                         ha->scan_mode &= 0x10;
2178                         TRACE2(("Scan mode: 0x%x (SCAN_END)\n",
2179                                 ha->scan_mode));
2180                     }
2181                 }
2182             }
2183             if (b == ha->virt_bus && nscp->cmnd[0] != INQUIRY &&
2184                 nscp->cmnd[0] != READ_CAPACITY && nscp->cmnd[0] != MODE_SENSE &&
2185                 (ha->hdr[t].cluster_type & CLUSTER_DRIVE)) {
2186                 /* always GDT_CLUST_INFO! */
2187                 nscp_cmndinfo->OpCode = GDT_CLUST_INFO;
2188             }
2189         }
2190         }
2191
2192         if (nscp_cmndinfo->OpCode != -1) {
2193             if ((nscp_cmndinfo->phase & 0xff) == CACHESERVICE) {
2194                 if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
2195                     this_cmd = FALSE;
2196                 next_cmd = FALSE;
2197             } else if ((nscp_cmndinfo->phase & 0xff) == SCSIRAWSERVICE) {
2198                 if (!(cmd_index=gdth_fill_raw_cmd(ha, nscp, BUS_L2P(ha, b))))
2199                     this_cmd = FALSE;
2200                 next_cmd = FALSE;
2201             } else {
2202                 memset((char*)nscp->sense_buffer,0,16);
2203                 nscp->sense_buffer[0] = 0x70;
2204                 nscp->sense_buffer[2] = NOT_READY;
2205                 nscp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
2206                 if (!nscp_cmndinfo->wait_for_completion)
2207                     nscp_cmndinfo->wait_for_completion++;
2208                 else
2209                     gdth_scsi_done(nscp);
2210             }
2211         } else if (gdth_cmnd_priv(nscp)->internal_command) {
2212             if (!(cmd_index=gdth_special_cmd(ha, nscp)))
2213                 this_cmd = FALSE;
2214             next_cmd = FALSE;
2215         } else if (b != ha->virt_bus) {
2216             if (ha->raw[BUS_L2P(ha,b)].io_cnt[t] >= GDTH_MAX_RAW ||
2217                 !(cmd_index=gdth_fill_raw_cmd(ha, nscp, BUS_L2P(ha, b))))
2218                 this_cmd = FALSE;
2219             else
2220                 ha->raw[BUS_L2P(ha,b)].io_cnt[t]++;
2221         } else if (t >= MAX_HDRIVES || !ha->hdr[t].present || l != 0) {
2222             TRACE2(("Command 0x%x to bus %d id %d lun %d -> IGNORE\n",
2223                     nscp->cmnd[0], b, t, l));
2224             nscp->result = DID_BAD_TARGET << 16;
2225             if (!nscp_cmndinfo->wait_for_completion)
2226                 nscp_cmndinfo->wait_for_completion++;
2227             else
2228                 gdth_scsi_done(nscp);
2229         } else {
2230             switch (nscp->cmnd[0]) {
2231               case TEST_UNIT_READY:
2232               case INQUIRY:
2233               case REQUEST_SENSE:
2234               case READ_CAPACITY:
2235               case VERIFY:
2236               case START_STOP:
2237               case MODE_SENSE:
2238               case SERVICE_ACTION_IN:
2239                 TRACE(("cache cmd %x/%x/%x/%x/%x/%x\n",nscp->cmnd[0],
2240                        nscp->cmnd[1],nscp->cmnd[2],nscp->cmnd[3],
2241                        nscp->cmnd[4],nscp->cmnd[5]));
2242                 if (ha->hdr[t].media_changed && nscp->cmnd[0] != INQUIRY) {
2243                     /* return UNIT_ATTENTION */
2244                     TRACE2(("cmd 0x%x target %d: UNIT_ATTENTION\n",
2245                              nscp->cmnd[0], t));
2246                     ha->hdr[t].media_changed = FALSE;
2247                     memset((char*)nscp->sense_buffer,0,16);
2248                     nscp->sense_buffer[0] = 0x70;
2249                     nscp->sense_buffer[2] = UNIT_ATTENTION;
2250                     nscp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
2251                     if (!nscp_cmndinfo->wait_for_completion)
2252                         nscp_cmndinfo->wait_for_completion++;
2253                     else
2254                         gdth_scsi_done(nscp);
2255                 } else if (gdth_internal_cache_cmd(ha, nscp))
2256                     gdth_scsi_done(nscp);
2257                 break;
2258
2259               case ALLOW_MEDIUM_REMOVAL:
2260                 TRACE(("cache cmd %x/%x/%x/%x/%x/%x\n",nscp->cmnd[0],
2261                        nscp->cmnd[1],nscp->cmnd[2],nscp->cmnd[3],
2262                        nscp->cmnd[4],nscp->cmnd[5]));
2263                 if ( (nscp->cmnd[4]&1) && !(ha->hdr[t].devtype&1) ) {
2264                     TRACE(("Prevent r. nonremov. drive->do nothing\n"));
2265                     nscp->result = DID_OK << 16;
2266                     nscp->sense_buffer[0] = 0;
2267                     if (!nscp_cmndinfo->wait_for_completion)
2268                         nscp_cmndinfo->wait_for_completion++;
2269                     else
2270                         gdth_scsi_done(nscp);
2271                 } else {
2272                     nscp->cmnd[3] = (ha->hdr[t].devtype&1) ? 1:0;
2273                     TRACE(("Prevent/allow r. %d rem. drive %d\n",
2274                            nscp->cmnd[4],nscp->cmnd[3]));
2275                     if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
2276                         this_cmd = FALSE;
2277                 }
2278                 break;
2279
2280               case RESERVE:
2281               case RELEASE:
2282                 TRACE2(("cache cmd %s\n",nscp->cmnd[0] == RESERVE ?
2283                         "RESERVE" : "RELEASE"));
2284                 if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
2285                     this_cmd = FALSE;
2286                 break;
2287
2288               case READ_6:
2289               case WRITE_6:
2290               case READ_10:
2291               case WRITE_10:
2292               case READ_16:
2293               case WRITE_16:
2294                 if (ha->hdr[t].media_changed) {
2295                     /* return UNIT_ATTENTION */
2296                     TRACE2(("cmd 0x%x target %d: UNIT_ATTENTION\n",
2297                              nscp->cmnd[0], t));
2298                     ha->hdr[t].media_changed = FALSE;
2299                     memset((char*)nscp->sense_buffer,0,16);
2300                     nscp->sense_buffer[0] = 0x70;
2301                     nscp->sense_buffer[2] = UNIT_ATTENTION;
2302                     nscp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
2303                     if (!nscp_cmndinfo->wait_for_completion)
2304                         nscp_cmndinfo->wait_for_completion++;
2305                     else
2306                         gdth_scsi_done(nscp);
2307                 } else if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
2308                     this_cmd = FALSE;
2309                 break;
2310
2311               default:
2312                 TRACE2(("cache cmd %x/%x/%x/%x/%x/%x unknown\n",nscp->cmnd[0],
2313                         nscp->cmnd[1],nscp->cmnd[2],nscp->cmnd[3],
2314                         nscp->cmnd[4],nscp->cmnd[5]));
2315                 printk("GDT-HA %d: Unknown SCSI command 0x%x to cache service !\n",
2316                        ha->hanum, nscp->cmnd[0]);
2317                 nscp->result = DID_ABORT << 16;
2318                 if (!nscp_cmndinfo->wait_for_completion)
2319                     nscp_cmndinfo->wait_for_completion++;
2320                 else
2321                     gdth_scsi_done(nscp);
2322                 break;
2323             }
2324         }
2325
2326         if (!this_cmd)
2327             break;
2328         if (nscp == ha->req_first)
2329             ha->req_first = pscp = (Scsi_Cmnd *)nscp->SCp.ptr;
2330         else
2331             pscp->SCp.ptr = nscp->SCp.ptr;
2332         if (!next_cmd)
2333             break;
2334     }
2335
2336     if (ha->cmd_cnt > 0) {
2337         gdth_release_event(ha);
2338     }
2339
2340     if (!gdth_polling)
2341         spin_unlock_irqrestore(&ha->smp_lock, flags);
2342
2343     if (gdth_polling && ha->cmd_cnt > 0) {
2344         if (!gdth_wait(ha, cmd_index, POLL_TIMEOUT))
2345             printk("GDT-HA %d: Command %d timed out !\n",
2346                    ha->hanum, cmd_index);
2347     }
2348 }
2349
2350 /*
2351  * gdth_copy_internal_data() - copy to/from a buffer onto a scsi_cmnd's
2352  * buffers, kmap_atomic() as needed.
2353  */
2354 static void gdth_copy_internal_data(gdth_ha_str *ha, Scsi_Cmnd *scp,
2355                                     char *buffer, ushort count, int to_buffer)
2356 {
2357     ushort cpcount,i, max_sg = gdth_sg_count(scp);
2358     ushort cpsum,cpnow;
2359     struct scatterlist *sl;
2360     char *address;
2361
2362     cpcount = min_t(ushort, count, gdth_bufflen(scp));
2363
2364     if (cpcount) {
2365         cpsum=0;
2366         scsi_for_each_sg(scp, sl, max_sg, i) {
2367             unsigned long flags;
2368             cpnow = (ushort)sl->length;
2369             TRACE(("copy_internal() now %d sum %d count %d %d\n",
2370                           cpnow, cpsum, cpcount, gdth_bufflen(scp)));
2371             if (cpsum+cpnow > cpcount)
2372                 cpnow = cpcount - cpsum;
2373             cpsum += cpnow;
2374             if (!sg_page(sl)) {
2375                 printk("GDT-HA %d: invalid sc/gt element in gdth_copy_internal_data()\n",
2376                        ha->hanum);
2377                 return;
2378             }
2379             local_irq_save(flags);
2380             address = kmap_atomic(sg_page(sl), KM_BIO_SRC_IRQ) + sl->offset;
2381             if (to_buffer)
2382                 memcpy(buffer, address, cpnow);
2383             else
2384                 memcpy(address, buffer, cpnow);
2385             flush_dcache_page(sg_page(sl));
2386             kunmap_atomic(address, KM_BIO_SRC_IRQ);
2387             local_irq_restore(flags);
2388             if (cpsum == cpcount)
2389                 break;
2390             buffer += cpnow;
2391         }
2392     } else if (count) {
2393         printk("GDT-HA %d: SCSI command with no buffers but data transfer expected!\n",
2394                ha->hanum);
2395         WARN_ON(1);
2396     }
2397 }
2398
2399 static int gdth_internal_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp)
2400 {
2401     unchar t;
2402     gdth_inq_data inq;
2403     gdth_rdcap_data rdc;
2404     gdth_sense_data sd;
2405     gdth_modep_data mpd;
2406     struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
2407
2408     t  = scp->device->id;
2409     TRACE(("gdth_internal_cache_cmd() cmd 0x%x hdrive %d\n",
2410            scp->cmnd[0],t));
2411
2412     scp->result = DID_OK << 16;
2413     scp->sense_buffer[0] = 0;
2414
2415     switch (scp->cmnd[0]) {
2416       case TEST_UNIT_READY:
2417       case VERIFY:
2418       case START_STOP:
2419         TRACE2(("Test/Verify/Start hdrive %d\n",t));
2420         break;
2421
2422       case INQUIRY:
2423         TRACE2(("Inquiry hdrive %d devtype %d\n",
2424                 t,ha->hdr[t].devtype));
2425         inq.type_qual = (ha->hdr[t].devtype&4) ? TYPE_ROM:TYPE_DISK;
2426         /* you can here set all disks to removable, if you want to do
2427            a flush using the ALLOW_MEDIUM_REMOVAL command */
2428         inq.modif_rmb = 0x00;
2429         if ((ha->hdr[t].devtype & 1) ||
2430             (ha->hdr[t].cluster_type & CLUSTER_DRIVE))
2431             inq.modif_rmb = 0x80;
2432         inq.version   = 2;
2433         inq.resp_aenc = 2;
2434         inq.add_length= 32;
2435         strcpy(inq.vendor,ha->oem_name);
2436         sprintf(inq.product,"Host Drive  #%02d",t);
2437         strcpy(inq.revision,"   ");
2438         gdth_copy_internal_data(ha, scp, (char*)&inq, sizeof(gdth_inq_data), 0);
2439         break;
2440
2441       case REQUEST_SENSE:
2442         TRACE2(("Request sense hdrive %d\n",t));
2443         sd.errorcode = 0x70;
2444         sd.segno     = 0x00;
2445         sd.key       = NO_SENSE;
2446         sd.info      = 0;
2447         sd.add_length= 0;
2448         gdth_copy_internal_data(ha, scp, (char*)&sd, sizeof(gdth_sense_data), 0);
2449         break;
2450
2451       case MODE_SENSE:
2452         TRACE2(("Mode sense hdrive %d\n",t));
2453         memset((char*)&mpd,0,sizeof(gdth_modep_data));
2454         mpd.hd.data_length = sizeof(gdth_modep_data);
2455         mpd.hd.dev_par     = (ha->hdr[t].devtype&2) ? 0x80:0;
2456         mpd.hd.bd_length   = sizeof(mpd.bd);
2457         mpd.bd.block_length[0] = (SECTOR_SIZE & 0x00ff0000) >> 16;
2458         mpd.bd.block_length[1] = (SECTOR_SIZE & 0x0000ff00) >> 8;
2459         mpd.bd.block_length[2] = (SECTOR_SIZE & 0x000000ff);
2460         gdth_copy_internal_data(ha, scp, (char*)&mpd, sizeof(gdth_modep_data), 0);
2461         break;
2462
2463       case READ_CAPACITY:
2464         TRACE2(("Read capacity hdrive %d\n",t));
2465         if (ha->hdr[t].size > (ulong64)0xffffffff)
2466             rdc.last_block_no = 0xffffffff;
2467         else
2468             rdc.last_block_no = cpu_to_be32(ha->hdr[t].size-1);
2469         rdc.block_length  = cpu_to_be32(SECTOR_SIZE);
2470         gdth_copy_internal_data(ha, scp, (char*)&rdc, sizeof(gdth_rdcap_data), 0);
2471         break;
2472
2473       case SERVICE_ACTION_IN:
2474         if ((scp->cmnd[1] & 0x1f) == SAI_READ_CAPACITY_16 &&
2475             (ha->cache_feat & GDT_64BIT)) {
2476             gdth_rdcap16_data rdc16;
2477
2478             TRACE2(("Read capacity (16) hdrive %d\n",t));
2479             rdc16.last_block_no = cpu_to_be64(ha->hdr[t].size-1);
2480             rdc16.block_length  = cpu_to_be32(SECTOR_SIZE);
2481             gdth_copy_internal_data(ha, scp, (char*)&rdc16,
2482                                                  sizeof(gdth_rdcap16_data), 0);
2483         } else {
2484             scp->result = DID_ABORT << 16;
2485         }
2486         break;
2487
2488       default:
2489         TRACE2(("Internal cache cmd 0x%x unknown\n",scp->cmnd[0]));
2490         break;
2491     }
2492
2493     if (!cmndinfo->wait_for_completion)
2494         cmndinfo->wait_for_completion++;
2495     else
2496         return 1;
2497
2498     return 0;
2499 }
2500
2501 static int gdth_fill_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, ushort hdrive)
2502 {
2503     register gdth_cmd_str *cmdp;
2504     struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
2505     ulong32 cnt, blockcnt;
2506     ulong64 no, blockno;
2507     int i, cmd_index, read_write, sgcnt, mode64;
2508
2509     cmdp = ha->pccb;
2510     TRACE(("gdth_fill_cache_cmd() cmd 0x%x cmdsize %d hdrive %d\n",
2511                  scp->cmnd[0],scp->cmd_len,hdrive));
2512
2513     if (ha->type==GDT_EISA && ha->cmd_cnt>0)
2514         return 0;
2515
2516     mode64 = (ha->cache_feat & GDT_64BIT) ? TRUE : FALSE;
2517     /* test for READ_16, WRITE_16 if !mode64 ? ---
2518        not required, should not occur due to error return on
2519        READ_CAPACITY_16 */
2520
2521     cmdp->Service = CACHESERVICE;
2522     cmdp->RequestBuffer = scp;
2523     /* search free command index */
2524     if (!(cmd_index=gdth_get_cmd_index(ha))) {
2525         TRACE(("GDT: No free command index found\n"));
2526         return 0;
2527     }
2528     /* if it's the first command, set command semaphore */
2529     if (ha->cmd_cnt == 0)
2530         gdth_set_sema0(ha);
2531
2532     /* fill command */
2533     read_write = 0;
2534     if (cmndinfo->OpCode != -1)
2535         cmdp->OpCode = cmndinfo->OpCode;   /* special cache cmd. */
2536     else if (scp->cmnd[0] == RESERVE)
2537         cmdp->OpCode = GDT_RESERVE_DRV;
2538     else if (scp->cmnd[0] == RELEASE)
2539         cmdp->OpCode = GDT_RELEASE_DRV;
2540     else if (scp->cmnd[0] == ALLOW_MEDIUM_REMOVAL) {
2541         if (scp->cmnd[4] & 1)                   /* prevent ? */
2542             cmdp->OpCode = GDT_MOUNT;
2543         else if (scp->cmnd[3] & 1)              /* removable drive ? */
2544             cmdp->OpCode = GDT_UNMOUNT;
2545         else
2546             cmdp->OpCode = GDT_FLUSH;
2547     } else if (scp->cmnd[0] == WRITE_6 || scp->cmnd[0] == WRITE_10 ||
2548                scp->cmnd[0] == WRITE_12 || scp->cmnd[0] == WRITE_16
2549     ) {
2550         read_write = 1;
2551         if (gdth_write_through || ((ha->hdr[hdrive].rw_attribs & 1) &&
2552                                    (ha->cache_feat & GDT_WR_THROUGH)))
2553             cmdp->OpCode = GDT_WRITE_THR;
2554         else
2555             cmdp->OpCode = GDT_WRITE;
2556     } else {
2557         read_write = 2;
2558         cmdp->OpCode = GDT_READ;
2559     }
2560
2561     cmdp->BoardNode = LOCALBOARD;
2562     if (mode64) {
2563         cmdp->u.cache64.DeviceNo = hdrive;
2564         cmdp->u.cache64.BlockNo  = 1;
2565         cmdp->u.cache64.sg_canz  = 0;
2566     } else {
2567         cmdp->u.cache.DeviceNo = hdrive;
2568         cmdp->u.cache.BlockNo  = 1;
2569         cmdp->u.cache.sg_canz  = 0;
2570     }
2571
2572     if (read_write) {
2573         if (scp->cmd_len == 16) {
2574             memcpy(&no, &scp->cmnd[2], sizeof(ulong64));
2575             blockno = be64_to_cpu(no);
2576             memcpy(&cnt, &scp->cmnd[10], sizeof(ulong32));
2577             blockcnt = be32_to_cpu(cnt);
2578         } else if (scp->cmd_len == 10) {
2579             memcpy(&no, &scp->cmnd[2], sizeof(ulong32));
2580             blockno = be32_to_cpu(no);
2581             memcpy(&cnt, &scp->cmnd[7], sizeof(ushort));
2582             blockcnt = be16_to_cpu(cnt);
2583         } else {
2584             memcpy(&no, &scp->cmnd[0], sizeof(ulong32));
2585             blockno = be32_to_cpu(no) & 0x001fffffUL;
2586             blockcnt= scp->cmnd[4]==0 ? 0x100 : scp->cmnd[4];
2587         }
2588         if (mode64) {
2589             cmdp->u.cache64.BlockNo = blockno;
2590             cmdp->u.cache64.BlockCnt = blockcnt;
2591         } else {
2592             cmdp->u.cache.BlockNo = (ulong32)blockno;
2593             cmdp->u.cache.BlockCnt = blockcnt;
2594         }
2595
2596         if (gdth_bufflen(scp)) {
2597             cmndinfo->dma_dir = (read_write == 1 ?
2598                 PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE);
2599             sgcnt = pci_map_sg(ha->pdev, gdth_sglist(scp), gdth_sg_count(scp),
2600                                cmndinfo->dma_dir);
2601             if (mode64) {
2602                 struct scatterlist *sl;
2603
2604                 cmdp->u.cache64.DestAddr= (ulong64)-1;
2605                 cmdp->u.cache64.sg_canz = sgcnt;
2606                 scsi_for_each_sg(scp, sl, sgcnt, i) {
2607                     cmdp->u.cache64.sg_lst[i].sg_ptr = sg_dma_address(sl);
2608 #ifdef GDTH_DMA_STATISTICS
2609                     if (cmdp->u.cache64.sg_lst[i].sg_ptr > (ulong64)0xffffffff)
2610                         ha->dma64_cnt++;
2611                     else
2612                         ha->dma32_cnt++;
2613 #endif
2614                     cmdp->u.cache64.sg_lst[i].sg_len = sg_dma_len(sl);
2615                 }
2616             } else {
2617                 struct scatterlist *sl;
2618
2619                 cmdp->u.cache.DestAddr= 0xffffffff;
2620                 cmdp->u.cache.sg_canz = sgcnt;
2621                 scsi_for_each_sg(scp, sl, sgcnt, i) {
2622                     cmdp->u.cache.sg_lst[i].sg_ptr = sg_dma_address(sl);
2623 #ifdef GDTH_DMA_STATISTICS
2624                     ha->dma32_cnt++;
2625 #endif
2626                     cmdp->u.cache.sg_lst[i].sg_len = sg_dma_len(sl);
2627                 }
2628             }
2629
2630 #ifdef GDTH_STATISTICS
2631             if (max_sg < (ulong32)sgcnt) {
2632                 max_sg = (ulong32)sgcnt;
2633                 TRACE3(("GDT: max_sg = %d\n",max_sg));
2634             }
2635 #endif
2636
2637         }
2638     }
2639     /* evaluate command size, check space */
2640     if (mode64) {
2641         TRACE(("cache cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
2642                cmdp->u.cache64.DestAddr,cmdp->u.cache64.sg_canz,
2643                cmdp->u.cache64.sg_lst[0].sg_ptr,
2644                cmdp->u.cache64.sg_lst[0].sg_len));
2645         TRACE(("cache cmd: cmd %d blockno. %d, blockcnt %d\n",
2646                cmdp->OpCode,cmdp->u.cache64.BlockNo,cmdp->u.cache64.BlockCnt));
2647         ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.cache64.sg_lst) +
2648             (ushort)cmdp->u.cache64.sg_canz * sizeof(gdth_sg64_str);
2649     } else {
2650         TRACE(("cache cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
2651                cmdp->u.cache.DestAddr,cmdp->u.cache.sg_canz,
2652                cmdp->u.cache.sg_lst[0].sg_ptr,
2653                cmdp->u.cache.sg_lst[0].sg_len));
2654         TRACE(("cache cmd: cmd %d blockno. %d, blockcnt %d\n",
2655                cmdp->OpCode,cmdp->u.cache.BlockNo,cmdp->u.cache.BlockCnt));
2656         ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.cache.sg_lst) +
2657             (ushort)cmdp->u.cache.sg_canz * sizeof(gdth_sg_str);
2658     }
2659     if (ha->cmd_len & 3)
2660         ha->cmd_len += (4 - (ha->cmd_len & 3));
2661
2662     if (ha->cmd_cnt > 0) {
2663         if ((ha->cmd_offs_dpmem + ha->cmd_len + DPMEM_COMMAND_OFFSET) >
2664             ha->ic_all_size) {
2665             TRACE2(("gdth_fill_cache() DPMEM overflow\n"));
2666             ha->cmd_tab[cmd_index-2].cmnd = UNUSED_CMND;
2667             return 0;
2668         }
2669     }
2670
2671     /* copy command */
2672     gdth_copy_command(ha);
2673     return cmd_index;
2674 }
2675
2676 static int gdth_fill_raw_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, unchar b)
2677 {
2678     register gdth_cmd_str *cmdp;
2679     ushort i;
2680     dma_addr_t sense_paddr;
2681     int cmd_index, sgcnt, mode64;
2682     unchar t,l;
2683     struct page *page;
2684     ulong offset;
2685     struct gdth_cmndinfo *cmndinfo;
2686
2687     t = scp->device->id;
2688     l = scp->device->lun;
2689     cmdp = ha->pccb;
2690     TRACE(("gdth_fill_raw_cmd() cmd 0x%x bus %d ID %d LUN %d\n",
2691            scp->cmnd[0],b,t,l));
2692
2693     if (ha->type==GDT_EISA && ha->cmd_cnt>0)
2694         return 0;
2695
2696     mode64 = (ha->raw_feat & GDT_64BIT) ? TRUE : FALSE;
2697
2698     cmdp->Service = SCSIRAWSERVICE;
2699     cmdp->RequestBuffer = scp;
2700     /* search free command index */
2701     if (!(cmd_index=gdth_get_cmd_index(ha))) {
2702         TRACE(("GDT: No free command index found\n"));
2703         return 0;
2704     }
2705     /* if it's the first command, set command semaphore */
2706     if (ha->cmd_cnt == 0)
2707         gdth_set_sema0(ha);
2708
2709     cmndinfo = gdth_cmnd_priv(scp);
2710     /* fill command */
2711     if (cmndinfo->OpCode != -1) {
2712         cmdp->OpCode           = cmndinfo->OpCode; /* special raw cmd. */
2713         cmdp->BoardNode        = LOCALBOARD;
2714         if (mode64) {
2715             cmdp->u.raw64.direction = (cmndinfo->phase >> 8);
2716             TRACE2(("special raw cmd 0x%x param 0x%x\n",
2717                     cmdp->OpCode, cmdp->u.raw64.direction));
2718             /* evaluate command size */
2719             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw64.sg_lst);
2720         } else {
2721             cmdp->u.raw.direction  = (cmndinfo->phase >> 8);
2722             TRACE2(("special raw cmd 0x%x param 0x%x\n",
2723                     cmdp->OpCode, cmdp->u.raw.direction));
2724             /* evaluate command size */
2725             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw.sg_lst);
2726         }
2727
2728     } else {
2729         page = virt_to_page(scp->sense_buffer);
2730         offset = (ulong)scp->sense_buffer & ~PAGE_MASK;
2731         sense_paddr = pci_map_page(ha->pdev,page,offset,
2732                                    16,PCI_DMA_FROMDEVICE);
2733
2734         cmndinfo->sense_paddr  = sense_paddr;
2735         cmdp->OpCode           = GDT_WRITE;             /* always */
2736         cmdp->BoardNode        = LOCALBOARD;
2737         if (mode64) {
2738             cmdp->u.raw64.reserved   = 0;
2739             cmdp->u.raw64.mdisc_time = 0;
2740             cmdp->u.raw64.mcon_time  = 0;
2741             cmdp->u.raw64.clen       = scp->cmd_len;
2742             cmdp->u.raw64.target     = t;
2743             cmdp->u.raw64.lun        = l;
2744             cmdp->u.raw64.bus        = b;
2745             cmdp->u.raw64.priority   = 0;
2746             cmdp->u.raw64.sdlen      = gdth_bufflen(scp);
2747             cmdp->u.raw64.sense_len  = 16;
2748             cmdp->u.raw64.sense_data = sense_paddr;
2749             cmdp->u.raw64.direction  =
2750                 gdth_direction_tab[scp->cmnd[0]]==DOU ? GDTH_DATA_OUT:GDTH_DATA_IN;
2751             memcpy(cmdp->u.raw64.cmd,scp->cmnd,16);
2752             cmdp->u.raw64.sg_ranz    = 0;
2753         } else {
2754             cmdp->u.raw.reserved   = 0;
2755             cmdp->u.raw.mdisc_time = 0;
2756             cmdp->u.raw.mcon_time  = 0;
2757             cmdp->u.raw.clen       = scp->cmd_len;
2758             cmdp->u.raw.target     = t;
2759             cmdp->u.raw.lun        = l;
2760             cmdp->u.raw.bus        = b;
2761             cmdp->u.raw.priority   = 0;
2762             cmdp->u.raw.link_p     = 0;
2763             cmdp->u.raw.sdlen      = gdth_bufflen(scp);
2764             cmdp->u.raw.sense_len  = 16;
2765             cmdp->u.raw.sense_data = sense_paddr;
2766             cmdp->u.raw.direction  =
2767                 gdth_direction_tab[scp->cmnd[0]]==DOU ? GDTH_DATA_OUT:GDTH_DATA_IN;
2768             memcpy(cmdp->u.raw.cmd,scp->cmnd,12);
2769             cmdp->u.raw.sg_ranz    = 0;
2770         }
2771
2772         if (gdth_bufflen(scp)) {
2773             cmndinfo->dma_dir = PCI_DMA_BIDIRECTIONAL;
2774             sgcnt = pci_map_sg(ha->pdev, gdth_sglist(scp), gdth_sg_count(scp),
2775                                cmndinfo->dma_dir);
2776             if (mode64) {
2777                 struct scatterlist *sl;
2778
2779                 cmdp->u.raw64.sdata = (ulong64)-1;
2780                 cmdp->u.raw64.sg_ranz = sgcnt;
2781                 scsi_for_each_sg(scp, sl, sgcnt, i) {
2782                     cmdp->u.raw64.sg_lst[i].sg_ptr = sg_dma_address(sl);
2783 #ifdef GDTH_DMA_STATISTICS
2784                     if (cmdp->u.raw64.sg_lst[i].sg_ptr > (ulong64)0xffffffff)
2785                         ha->dma64_cnt++;
2786                     else
2787                         ha->dma32_cnt++;
2788 #endif
2789                     cmdp->u.raw64.sg_lst[i].sg_len = sg_dma_len(sl);
2790                 }
2791             } else {
2792                 struct scatterlist *sl;
2793
2794                 cmdp->u.raw.sdata = 0xffffffff;
2795                 cmdp->u.raw.sg_ranz = sgcnt;
2796                 scsi_for_each_sg(scp, sl, sgcnt, i) {
2797                     cmdp->u.raw.sg_lst[i].sg_ptr = sg_dma_address(sl);
2798 #ifdef GDTH_DMA_STATISTICS
2799                     ha->dma32_cnt++;
2800 #endif
2801                     cmdp->u.raw.sg_lst[i].sg_len = sg_dma_len(sl);
2802                 }
2803             }
2804
2805 #ifdef GDTH_STATISTICS
2806             if (max_sg < sgcnt) {
2807                 max_sg = sgcnt;
2808                 TRACE3(("GDT: max_sg = %d\n",sgcnt));
2809             }
2810 #endif
2811
2812         }
2813         if (mode64) {
2814             TRACE(("raw cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
2815                    cmdp->u.raw64.sdata,cmdp->u.raw64.sg_ranz,
2816                    cmdp->u.raw64.sg_lst[0].sg_ptr,
2817                    cmdp->u.raw64.sg_lst[0].sg_len));
2818             /* evaluate command size */
2819             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw64.sg_lst) +
2820                 (ushort)cmdp->u.raw64.sg_ranz * sizeof(gdth_sg64_str);
2821         } else {
2822             TRACE(("raw cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
2823                    cmdp->u.raw.sdata,cmdp->u.raw.sg_ranz,
2824                    cmdp->u.raw.sg_lst[0].sg_ptr,
2825                    cmdp->u.raw.sg_lst[0].sg_len));
2826             /* evaluate command size */
2827             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw.sg_lst) +
2828                 (ushort)cmdp->u.raw.sg_ranz * sizeof(gdth_sg_str);
2829         }
2830     }
2831     /* check space */
2832     if (ha->cmd_len & 3)
2833         ha->cmd_len += (4 - (ha->cmd_len & 3));
2834
2835     if (ha->cmd_cnt > 0) {
2836         if ((ha->cmd_offs_dpmem + ha->cmd_len + DPMEM_COMMAND_OFFSET) >
2837             ha->ic_all_size) {
2838             TRACE2(("gdth_fill_raw() DPMEM overflow\n"));
2839             ha->cmd_tab[cmd_index-2].cmnd = UNUSED_CMND;
2840             return 0;
2841         }
2842     }
2843
2844     /* copy command */
2845     gdth_copy_command(ha);
2846     return cmd_index;
2847 }
2848
2849 static int gdth_special_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp)
2850 {
2851     register gdth_cmd_str *cmdp;
2852     int cmd_index;
2853
2854     cmdp= ha->pccb;
2855     TRACE2(("gdth_special_cmd(): "));
2856
2857     if (ha->type==GDT_EISA && ha->cmd_cnt>0)
2858         return 0;
2859
2860     gdth_copy_internal_data(ha, scp, (char *)cmdp, sizeof(gdth_cmd_str), 1);
2861     cmdp->RequestBuffer = scp;
2862
2863     /* search free command index */
2864     if (!(cmd_index=gdth_get_cmd_index(ha))) {
2865         TRACE(("GDT: No free command index found\n"));
2866         return 0;
2867     }
2868
2869     /* if it's the first command, set command semaphore */
2870     if (ha->cmd_cnt == 0)
2871        gdth_set_sema0(ha);
2872
2873     /* evaluate command size, check space */
2874     if (cmdp->OpCode == GDT_IOCTL) {
2875         TRACE2(("IOCTL\n"));
2876         ha->cmd_len =
2877             GDTOFFSOF(gdth_cmd_str,u.ioctl.p_param) + sizeof(ulong64);
2878     } else if (cmdp->Service == CACHESERVICE) {
2879         TRACE2(("cache command %d\n",cmdp->OpCode));
2880         if (ha->cache_feat & GDT_64BIT)
2881             ha->cmd_len =
2882                 GDTOFFSOF(gdth_cmd_str,u.cache64.sg_lst) + sizeof(gdth_sg64_str);
2883         else
2884             ha->cmd_len =
2885                 GDTOFFSOF(gdth_cmd_str,u.cache.sg_lst) + sizeof(gdth_sg_str);
2886     } else if (cmdp->Service == SCSIRAWSERVICE) {
2887         TRACE2(("raw command %d\n",cmdp->OpCode));
2888         if (ha->raw_feat & GDT_64BIT)
2889             ha->cmd_len =
2890                 GDTOFFSOF(gdth_cmd_str,u.raw64.sg_lst) + sizeof(gdth_sg64_str);
2891         else
2892             ha->cmd_len =
2893                 GDTOFFSOF(gdth_cmd_str,u.raw.sg_lst) + sizeof(gdth_sg_str);
2894     }
2895
2896     if (ha->cmd_len & 3)
2897         ha->cmd_len += (4 - (ha->cmd_len & 3));
2898
2899     if (ha->cmd_cnt > 0) {
2900         if ((ha->cmd_offs_dpmem + ha->cmd_len + DPMEM_COMMAND_OFFSET) >
2901             ha->ic_all_size) {
2902             TRACE2(("gdth_special_cmd() DPMEM overflow\n"));
2903             ha->cmd_tab[cmd_index-2].cmnd = UNUSED_CMND;
2904             return 0;
2905         }
2906     }
2907
2908     /* copy command */
2909     gdth_copy_command(ha);
2910     return cmd_index;
2911 }
2912
2913
2914 /* Controller event handling functions */
2915 static gdth_evt_str *gdth_store_event(gdth_ha_str *ha, ushort source,
2916                                       ushort idx, gdth_evt_data *evt)
2917 {
2918     gdth_evt_str *e;
2919     struct timeval tv;
2920
2921     /* no GDTH_LOCK_HA() ! */
2922     TRACE2(("gdth_store_event() source %d idx %d\n", source, idx));
2923     if (source == 0)                        /* no source -> no event */
2924         return NULL;
2925
2926     if (ebuffer[elastidx].event_source == source &&
2927         ebuffer[elastidx].event_idx == idx &&
2928         ((evt->size != 0 && ebuffer[elastidx].event_data.size != 0 &&
2929             !memcmp((char *)&ebuffer[elastidx].event_data.eu,
2930             (char *)&evt->eu, evt->size)) ||
2931         (evt->size == 0 && ebuffer[elastidx].event_data.size == 0 &&
2932             !strcmp((char *)&ebuffer[elastidx].event_data.event_string,
2933             (char *)&evt->event_string)))) {
2934         e = &ebuffer[elastidx];
2935         do_gettimeofday(&tv);
2936         e->last_stamp = tv.tv_sec;
2937         ++e->same_count;
2938     } else {
2939         if (ebuffer[elastidx].event_source != 0) {  /* entry not free ? */
2940             ++elastidx;
2941             if (elastidx == MAX_EVENTS)
2942                 elastidx = 0;
2943             if (elastidx == eoldidx) {              /* reached mark ? */
2944                 ++eoldidx;
2945                 if (eoldidx == MAX_EVENTS)
2946                     eoldidx = 0;
2947             }
2948         }
2949         e = &ebuffer[elastidx];
2950         e->event_source = source;
2951         e->event_idx = idx;
2952         do_gettimeofday(&tv);
2953         e->first_stamp = e->last_stamp = tv.tv_sec;
2954         e->same_count = 1;
2955         e->event_data = *evt;
2956         e->application = 0;
2957     }
2958     return e;
2959 }
2960
2961 static int gdth_read_event(gdth_ha_str *ha, int handle, gdth_evt_str *estr)
2962 {
2963     gdth_evt_str *e;
2964     int eindex;
2965     ulong flags;
2966
2967     TRACE2(("gdth_read_event() handle %d\n", handle));
2968     spin_lock_irqsave(&ha->smp_lock, flags);
2969     if (handle == -1)
2970         eindex = eoldidx;
2971     else
2972         eindex = handle;
2973     estr->event_source = 0;
2974
2975     if (eindex >= MAX_EVENTS) {
2976         spin_unlock_irqrestore(&ha->smp_lock, flags);
2977         return eindex;
2978     }
2979     e = &ebuffer[eindex];
2980     if (e->event_source != 0) {
2981         if (eindex != elastidx) {
2982             if (++eindex == MAX_EVENTS)
2983                 eindex = 0;
2984         } else {
2985             eindex = -1;
2986         }
2987         memcpy(estr, e, sizeof(gdth_evt_str));
2988     }
2989     spin_unlock_irqrestore(&ha->smp_lock, flags);
2990     return eindex;
2991 }
2992
2993 static void gdth_readapp_event(gdth_ha_str *ha,
2994                                unchar application, gdth_evt_str *estr)
2995 {
2996     gdth_evt_str *e;
2997     int eindex;
2998     ulong flags;
2999     unchar found = FALSE;
3000
3001     TRACE2(("gdth_readapp_event() app. %d\n", application));
3002     spin_lock_irqsave(&ha->smp_lock, flags);
3003     eindex = eoldidx;
3004     for (;;) {
3005         e = &ebuffer[eindex];
3006         if (e->event_source == 0)
3007             break;
3008         if ((e->application & application) == 0) {
3009             e->application |= application;
3010             found = TRUE;
3011             break;
3012         }
3013         if (eindex == elastidx)
3014             break;
3015         if (++eindex == MAX_EVENTS)
3016             eindex = 0;
3017     }
3018     if (found)
3019         memcpy(estr, e, sizeof(gdth_evt_str));
3020     else
3021         estr->event_source = 0;
3022     spin_unlock_irqrestore(&ha->smp_lock, flags);
3023 }
3024
3025 static void gdth_clear_events(void)
3026 {
3027     TRACE(("gdth_clear_events()"));
3028
3029     eoldidx = elastidx = 0;
3030     ebuffer[0].event_source = 0;
3031 }
3032
3033
3034 /* SCSI interface functions */
3035
3036 static irqreturn_t __gdth_interrupt(gdth_ha_str *ha,
3037                                     int gdth_from_wait, int* pIndex)
3038 {
3039     gdt6m_dpram_str __iomem *dp6m_ptr = NULL;
3040     gdt6_dpram_str __iomem *dp6_ptr;
3041     gdt2_dpram_str __iomem *dp2_ptr;
3042     Scsi_Cmnd *scp;
3043     int rval, i;
3044     unchar IStatus;
3045     ushort Service;
3046     ulong flags = 0;
3047 #ifdef INT_COAL
3048     int coalesced = FALSE;
3049     int next = FALSE;
3050     gdth_coal_status *pcs = NULL;
3051     int act_int_coal = 0;
3052 #endif
3053
3054     TRACE(("gdth_interrupt() IRQ %d\n", ha->irq));
3055
3056     /* if polling and not from gdth_wait() -> return */
3057     if (gdth_polling) {
3058         if (!gdth_from_wait) {
3059             return IRQ_HANDLED;
3060         }
3061     }
3062
3063     if (!gdth_polling)
3064         spin_lock_irqsave(&ha->smp_lock, flags);
3065
3066     /* search controller */
3067     IStatus = gdth_get_status(ha);
3068     if (IStatus == 0) {
3069         /* spurious interrupt */
3070         if (!gdth_polling)
3071             spin_unlock_irqrestore(&ha->smp_lock, flags);
3072         return IRQ_HANDLED;
3073     }
3074
3075 #ifdef GDTH_STATISTICS
3076     ++act_ints;
3077 #endif
3078
3079 #ifdef INT_COAL
3080     /* See if the fw is returning coalesced status */
3081     if (IStatus == COALINDEX) {
3082         /* Coalesced status.  Setup the initial status
3083            buffer pointer and flags */
3084         pcs = ha->coal_stat;
3085         coalesced = TRUE;
3086         next = TRUE;
3087     }
3088
3089     do {
3090         if (coalesced) {
3091             /* For coalesced requests all status
3092                information is found in the status buffer */
3093             IStatus = (unchar)(pcs->status & 0xff);
3094         }
3095 #endif
3096
3097         if (ha->type == GDT_EISA) {
3098             if (IStatus & 0x80) {                       /* error flag */
3099                 IStatus &= ~0x80;
3100                 ha->status = inw(ha->bmic + MAILBOXREG+8);
3101                 TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3102             } else                                      /* no error */
3103                 ha->status = S_OK;
3104             ha->info = inl(ha->bmic + MAILBOXREG+12);
3105             ha->service = inw(ha->bmic + MAILBOXREG+10);
3106             ha->info2 = inl(ha->bmic + MAILBOXREG+4);
3107
3108             outb(0xff, ha->bmic + EDOORREG);    /* acknowledge interrupt */
3109             outb(0x00, ha->bmic + SEMA1REG);    /* reset status semaphore */
3110         } else if (ha->type == GDT_ISA) {
3111             dp2_ptr = ha->brd;
3112             if (IStatus & 0x80) {                       /* error flag */
3113                 IStatus &= ~0x80;
3114                 ha->status = readw(&dp2_ptr->u.ic.Status);
3115                 TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3116             } else                                      /* no error */
3117                 ha->status = S_OK;
3118             ha->info = readl(&dp2_ptr->u.ic.Info[0]);
3119             ha->service = readw(&dp2_ptr->u.ic.Service);
3120             ha->info2 = readl(&dp2_ptr->u.ic.Info[1]);
3121
3122             writeb(0xff, &dp2_ptr->io.irqdel); /* acknowledge interrupt */
3123             writeb(0, &dp2_ptr->u.ic.Cmd_Index);/* reset command index */
3124             writeb(0, &dp2_ptr->io.Sema1);     /* reset status semaphore */
3125         } else if (ha->type == GDT_PCI) {
3126             dp6_ptr = ha->brd;
3127             if (IStatus & 0x80) {                       /* error flag */
3128                 IStatus &= ~0x80;
3129                 ha->status = readw(&dp6_ptr->u.ic.Status);
3130                 TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3131             } else                                      /* no error */
3132                 ha->status = S_OK;
3133             ha->info = readl(&dp6_ptr->u.ic.Info[0]);
3134             ha->service = readw(&dp6_ptr->u.ic.Service);
3135             ha->info2 = readl(&dp6_ptr->u.ic.Info[1]);
3136
3137             writeb(0xff, &dp6_ptr->io.irqdel); /* acknowledge interrupt */
3138             writeb(0, &dp6_ptr->u.ic.Cmd_Index);/* reset command index */
3139             writeb(0, &dp6_ptr->io.Sema1);     /* reset status semaphore */
3140         } else if (ha->type == GDT_PCINEW) {
3141             if (IStatus & 0x80) {                       /* error flag */
3142                 IStatus &= ~0x80;
3143                 ha->status = inw(PTR2USHORT(&ha->plx->status));
3144                 TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3145             } else
3146                 ha->status = S_OK;
3147             ha->info = inl(PTR2USHORT(&ha->plx->info[0]));
3148             ha->service = inw(PTR2USHORT(&ha->plx->service));
3149             ha->info2 = inl(PTR2USHORT(&ha->plx->info[1]));
3150
3151             outb(0xff, PTR2USHORT(&ha->plx->edoor_reg));
3152             outb(0x00, PTR2USHORT(&ha->plx->sema1_reg));
3153         } else if (ha->type == GDT_PCIMPR) {
3154             dp6m_ptr = ha->brd;
3155             if (IStatus & 0x80) {                       /* error flag */
3156                 IStatus &= ~0x80;
3157 #ifdef INT_COAL
3158                 if (coalesced)
3159                     ha->status = pcs->ext_status & 0xffff;
3160                 else
3161 #endif
3162                     ha->status = readw(&dp6m_ptr->i960r.status);
3163                 TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3164             } else                                      /* no error */
3165                 ha->status = S_OK;
3166 #ifdef INT_COAL
3167             /* get information */
3168             if (coalesced) {
3169                 ha->info = pcs->info0;
3170                 ha->info2 = pcs->info1;
3171                 ha->service = (pcs->ext_status >> 16) & 0xffff;
3172             } else
3173 #endif
3174             {
3175                 ha->info = readl(&dp6m_ptr->i960r.info[0]);
3176                 ha->service = readw(&dp6m_ptr->i960r.service);
3177                 ha->info2 = readl(&dp6m_ptr->i960r.info[1]);
3178             }
3179             /* event string */
3180             if (IStatus == ASYNCINDEX) {
3181                 if (ha->service != SCREENSERVICE &&
3182                     (ha->fw_vers & 0xff) >= 0x1a) {
3183                     ha->dvr.severity = readb
3184                         (&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.severity);
3185                     for (i = 0; i < 256; ++i) {
3186                         ha->dvr.event_string[i] = readb
3187                             (&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.evt_str[i]);
3188                         if (ha->dvr.event_string[i] == 0)
3189                             break;
3190                     }
3191                 }
3192             }
3193 #ifdef INT_COAL
3194             /* Make sure that non coalesced interrupts get cleared
3195                before being handled by gdth_async_event/gdth_sync_event */
3196             if (!coalesced)
3197 #endif
3198             {
3199                 writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
3200                 writeb(0, &dp6m_ptr->i960r.sema1_reg);
3201             }
3202         } else {
3203             TRACE2(("gdth_interrupt() unknown controller type\n"));
3204             if (!gdth_polling)
3205                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3206             return IRQ_HANDLED;
3207         }
3208
3209         TRACE(("gdth_interrupt() index %d stat %d info %d\n",
3210                IStatus,ha->status,ha->info));
3211
3212         if (gdth_from_wait) {
3213             *pIndex = (int)IStatus;
3214         }
3215
3216         if (IStatus == ASYNCINDEX) {
3217             TRACE2(("gdth_interrupt() async. event\n"));
3218             gdth_async_event(ha);
3219             if (!gdth_polling)
3220                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3221             gdth_next(ha);
3222             return IRQ_HANDLED;
3223         }
3224
3225         if (IStatus == SPEZINDEX) {
3226             TRACE2(("Service unknown or not initialized !\n"));
3227             ha->dvr.size = sizeof(ha->dvr.eu.driver);
3228             ha->dvr.eu.driver.ionode = ha->hanum;
3229             gdth_store_event(ha, ES_DRIVER, 4, &ha->dvr);
3230             if (!gdth_polling)
3231                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3232             return IRQ_HANDLED;
3233         }
3234         scp     = ha->cmd_tab[IStatus-2].cmnd;
3235         Service = ha->cmd_tab[IStatus-2].service;
3236         ha->cmd_tab[IStatus-2].cmnd = UNUSED_CMND;
3237         if (scp == UNUSED_CMND) {
3238             TRACE2(("gdth_interrupt() index to unused command (%d)\n",IStatus));
3239             ha->dvr.size = sizeof(ha->dvr.eu.driver);
3240             ha->dvr.eu.driver.ionode = ha->hanum;
3241             ha->dvr.eu.driver.index = IStatus;
3242             gdth_store_event(ha, ES_DRIVER, 1, &ha->dvr);
3243             if (!gdth_polling)
3244                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3245             return IRQ_HANDLED;
3246         }
3247         if (scp == INTERNAL_CMND) {
3248             TRACE(("gdth_interrupt() answer to internal command\n"));
3249             if (!gdth_polling)
3250                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3251             return IRQ_HANDLED;
3252         }
3253
3254         TRACE(("gdth_interrupt() sync. status\n"));
3255         rval = gdth_sync_event(ha,Service,IStatus,scp);
3256         if (!gdth_polling)
3257             spin_unlock_irqrestore(&ha->smp_lock, flags);
3258         if (rval == 2) {
3259             gdth_putq(ha, scp, gdth_cmnd_priv(scp)->priority);
3260         } else if (rval == 1) {
3261             gdth_scsi_done(scp);
3262         }
3263
3264 #ifdef INT_COAL
3265         if (coalesced) {
3266             /* go to the next status in the status buffer */
3267             ++pcs;
3268 #ifdef GDTH_STATISTICS
3269             ++act_int_coal;
3270             if (act_int_coal > max_int_coal) {
3271                 max_int_coal = act_int_coal;
3272                 printk("GDT: max_int_coal = %d\n",(ushort)max_int_coal);
3273             }
3274 #endif
3275             /* see if there is another status */
3276             if (pcs->status == 0)
3277                 /* Stop the coalesce loop */
3278                 next = FALSE;
3279         }
3280     } while (next);
3281
3282     /* coalescing only for new GDT_PCIMPR controllers available */
3283     if (ha->type == GDT_PCIMPR && coalesced) {
3284         writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
3285         writeb(0, &dp6m_ptr->i960r.sema1_reg);
3286     }
3287 #endif
3288
3289     gdth_next(ha);
3290     return IRQ_HANDLED;
3291 }
3292
3293 static irqreturn_t gdth_interrupt(int irq, void *dev_id)
3294 {
3295         gdth_ha_str *ha = dev_id;
3296
3297         return __gdth_interrupt(ha, false, NULL);
3298 }
3299
3300 static int gdth_sync_event(gdth_ha_str *ha, int service, unchar index,
3301                                                               Scsi_Cmnd *scp)
3302 {
3303     gdth_msg_str *msg;
3304     gdth_cmd_str *cmdp;
3305     unchar b, t;
3306     struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
3307
3308     cmdp = ha->pccb;
3309     TRACE(("gdth_sync_event() serv %d status %d\n",
3310            service,ha->status));
3311
3312     if (service == SCREENSERVICE) {
3313         msg  = ha->pmsg;
3314         TRACE(("len: %d, answer: %d, ext: %d, alen: %d\n",
3315                msg->msg_len,msg->msg_answer,msg->msg_ext,msg->msg_alen));
3316         if (msg->msg_len > MSGLEN+1)
3317             msg->msg_len = MSGLEN+1;
3318         if (msg->msg_len)
3319             if (!(msg->msg_answer && msg->msg_ext)) {
3320                 msg->msg_text[msg->msg_len] = '\0';
3321                 printk("%s",msg->msg_text);
3322             }
3323
3324         if (msg->msg_ext && !msg->msg_answer) {
3325             while (gdth_test_busy(ha))
3326                 gdth_delay(0);
3327             cmdp->Service       = SCREENSERVICE;
3328             cmdp->RequestBuffer = SCREEN_CMND;
3329             gdth_get_cmd_index(ha);
3330             gdth_set_sema0(ha);
3331             cmdp->OpCode        = GDT_READ;
3332             cmdp->BoardNode     = LOCALBOARD;
3333             cmdp->u.screen.reserved  = 0;
3334             cmdp->u.screen.su.msg.msg_handle= msg->msg_handle;
3335             cmdp->u.screen.su.msg.msg_addr  = ha->msg_phys;
3336             ha->cmd_offs_dpmem = 0;
3337             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.screen.su.msg.msg_addr)
3338                 + sizeof(ulong64);
3339             ha->cmd_cnt = 0;
3340             gdth_copy_command(ha);
3341             gdth_release_event(ha);
3342             return 0;
3343         }
3344
3345         if (msg->msg_answer && msg->msg_alen) {
3346             /* default answers (getchar() not possible) */
3347             if (msg->msg_alen == 1) {
3348                 msg->msg_alen = 0;
3349                 msg->msg_len = 1;
3350                 msg->msg_text[0] = 0;
3351             } else {
3352                 msg->msg_alen -= 2;
3353                 msg->msg_len = 2;
3354                 msg->msg_text[0] = 1;
3355                 msg->msg_text[1] = 0;
3356             }
3357             msg->msg_ext    = 0;
3358             msg->msg_answer = 0;
3359             while (gdth_test_busy(ha))
3360                 gdth_delay(0);
3361             cmdp->Service       = SCREENSERVICE;
3362             cmdp->RequestBuffer = SCREEN_CMND;
3363             gdth_get_cmd_index(ha);
3364             gdth_set_sema0(ha);
3365             cmdp->OpCode        = GDT_WRITE;
3366             cmdp->BoardNode     = LOCALBOARD;
3367             cmdp->u.screen.reserved  = 0;
3368             cmdp->u.screen.su.msg.msg_handle= msg->msg_handle;
3369             cmdp->u.screen.su.msg.msg_addr  = ha->msg_phys;
3370             ha->cmd_offs_dpmem = 0;
3371             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.screen.su.msg.msg_addr)
3372                 + sizeof(ulong64);
3373             ha->cmd_cnt = 0;
3374             gdth_copy_command(ha);
3375             gdth_release_event(ha);
3376             return 0;
3377         }
3378         printk("\n");
3379
3380     } else {
3381         b = scp->device->channel;
3382         t = scp->device->id;
3383         if (cmndinfo->OpCode == -1 && b != ha->virt_bus) {
3384             ha->raw[BUS_L2P(ha,b)].io_cnt[t]--;
3385         }
3386         /* cache or raw service */
3387         if (ha->status == S_BSY) {
3388             TRACE2(("Controller busy -> retry !\n"));
3389             if (cmndinfo->OpCode == GDT_MOUNT)
3390                 cmndinfo->OpCode = GDT_CLUST_INFO;
3391             /* retry */
3392             return 2;
3393         }
3394         if (gdth_bufflen(scp))
3395             pci_unmap_sg(ha->pdev, gdth_sglist(scp), gdth_sg_count(scp),
3396                          cmndinfo->dma_dir);
3397
3398         if (cmndinfo->sense_paddr)
3399             pci_unmap_page(ha->pdev, cmndinfo->sense_paddr, 16,
3400                                                            PCI_DMA_FROMDEVICE);
3401
3402         if (ha->status == S_OK) {
3403             cmndinfo->status = S_OK;
3404             cmndinfo->info = ha->info;
3405             if (cmndinfo->OpCode != -1) {
3406                 TRACE2(("gdth_sync_event(): special cmd 0x%x OK\n",
3407                         cmndinfo->OpCode));
3408                 /* special commands GDT_CLUST_INFO/GDT_MOUNT ? */
3409                 if (cmndinfo->OpCode == GDT_CLUST_INFO) {
3410                     ha->hdr[t].cluster_type = (unchar)ha->info;
3411                     if (!(ha->hdr[t].cluster_type &
3412                         CLUSTER_MOUNTED)) {
3413                         /* NOT MOUNTED -> MOUNT */
3414                         cmndinfo->OpCode = GDT_MOUNT;
3415                         if (ha->hdr[t].cluster_type &
3416                             CLUSTER_RESERVED) {
3417                             /* cluster drive RESERVED (on the other node) */
3418                             cmndinfo->phase = -2;      /* reservation conflict */
3419                         }
3420                     } else {
3421                         cmndinfo->OpCode = -1;
3422                     }
3423                 } else {
3424                     if (cmndinfo->OpCode == GDT_MOUNT) {
3425                         ha->hdr[t].cluster_type |= CLUSTER_MOUNTED;
3426                         ha->hdr[t].media_changed = TRUE;
3427                     } else if (cmndinfo->OpCode == GDT_UNMOUNT) {
3428                         ha->hdr[t].cluster_type &= ~CLUSTER_MOUNTED;
3429                         ha->hdr[t].media_changed = TRUE;
3430                     }
3431                     cmndinfo->OpCode = -1;
3432                 }
3433                 /* retry */
3434                 cmndinfo->priority = HIGH_PRI;
3435                 return 2;
3436             } else {
3437                 /* RESERVE/RELEASE ? */
3438                 if (scp->cmnd[0] == RESERVE) {
3439                     ha->hdr[t].cluster_type |= CLUSTER_RESERVED;
3440                 } else if (scp->cmnd[0] == RELEASE) {
3441                     ha->hdr[t].cluster_type &= ~CLUSTER_RESERVED;
3442                 }
3443                 scp->result = DID_OK << 16;
3444                 scp->sense_buffer[0] = 0;
3445             }
3446         } else {
3447             cmndinfo->status = ha->status;
3448             cmndinfo->info = ha->info;
3449
3450             if (cmndinfo->OpCode != -1) {
3451                 TRACE2(("gdth_sync_event(): special cmd 0x%x error 0x%x\n",
3452                         cmndinfo->OpCode, ha->status));
3453                 if (cmndinfo->OpCode == GDT_SCAN_START ||
3454                     cmndinfo->OpCode == GDT_SCAN_END) {
3455                     cmndinfo->OpCode = -1;
3456                     /* retry */
3457                     cmndinfo->priority = HIGH_PRI;
3458                     return 2;
3459                 }
3460                 memset((char*)scp->sense_buffer,0,16);
3461                 scp->sense_buffer[0] = 0x70;
3462                 scp->sense_buffer[2] = NOT_READY;
3463                 scp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
3464             } else if (service == CACHESERVICE) {
3465                 if (ha->status == S_CACHE_UNKNOWN &&
3466                     (ha->hdr[t].cluster_type &
3467                      CLUSTER_RESERVE_STATE) == CLUSTER_RESERVE_STATE) {
3468                     /* bus reset -> force GDT_CLUST_INFO */
3469                     ha->hdr[t].cluster_type &= ~CLUSTER_RESERVED;
3470                 }
3471                 memset((char*)scp->sense_buffer,0,16);
3472                 if (ha->status == (ushort)S_CACHE_RESERV) {
3473                     scp->result = (DID_OK << 16) | (RESERVATION_CONFLICT << 1);
3474                 } else {
3475                     scp->sense_buffer[0] = 0x70;
3476                     scp->sense_buffer[2] = NOT_READY;
3477                     scp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
3478                 }
3479                 if (!cmndinfo->internal_command) {
3480                     ha->dvr.size = sizeof(ha->dvr.eu.sync);
3481                     ha->dvr.eu.sync.ionode  = ha->hanum;
3482                     ha->dvr.eu.sync.service = service;
3483                     ha->dvr.eu.sync.status  = ha->status;
3484                     ha->dvr.eu.sync.info    = ha->info;
3485                     ha->dvr.eu.sync.hostdrive = t;
3486                     if (ha->status >= 0x8000)
3487                         gdth_store_event(ha, ES_SYNC, 0, &ha->dvr);
3488                     else
3489                         gdth_store_event(ha, ES_SYNC, service, &ha->dvr);
3490                 }
3491             } else {
3492                 /* sense buffer filled from controller firmware (DMA) */
3493                 if (ha->status != S_RAW_SCSI || ha->info >= 0x100) {
3494                     scp->result = DID_BAD_TARGET << 16;
3495                 } else {
3496                     scp->result = (DID_OK << 16) | ha->info;
3497                 }
3498             }
3499         }
3500         if (!cmndinfo->wait_for_completion)
3501             cmndinfo->wait_for_completion++;
3502         else
3503             return 1;
3504     }
3505
3506     return 0;
3507 }
3508
3509 static char *async_cache_tab[] = {
3510 /* 0*/  "\011\000\002\002\002\004\002\006\004"
3511         "GDT HA %u, service %u, async. status %u/%lu unknown",
3512 /* 1*/  "\011\000\002\002\002\004\002\006\004"
3513         "GDT HA %u, service %u, async. status %u/%lu unknown",
3514 /* 2*/  "\005\000\002\006\004"
3515         "GDT HA %u, Host Drive %lu not ready",
3516 /* 3*/  "\005\000\002\006\004"
3517         "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",
3518 /* 4*/  "\005\000\002\006\004"
3519         "GDT HA %u, mirror update on Host Drive %lu failed",
3520 /* 5*/  "\005\000\002\006\004"
3521         "GDT HA %u, Mirror Drive %lu failed",
3522 /* 6*/  "\005\000\002\006\004"
3523         "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",
3524 /* 7*/  "\005\000\002\006\004"
3525         "GDT HA %u, Host Drive %lu write protected",
3526 /* 8*/  "\005\000\002\006\004"
3527         "GDT HA %u, media changed in Host Drive %lu",
3528 /* 9*/  "\005\000\002\006\004"
3529         "GDT HA %u, Host Drive %lu is offline",
3530 /*10*/  "\005\000\002\006\004"
3531         "GDT HA %u, media change of Mirror Drive %lu",
3532 /*11*/  "\005\000\002\006\004"
3533         "GDT HA %u, Mirror Drive %lu is write protected",
3534 /*12*/  "\005\000\002\006\004"
3535         "GDT HA %u, general error on Host Drive %lu. Please check the devices of this drive!",
3536 /*13*/  "\007\000\002\006\002\010\002"
3537         "GDT HA %u, Array Drive %u: Cache Drive %u failed",
3538 /*14*/  "\005\000\002\006\002"
3539         "GDT HA %u, Array Drive %u: FAIL state entered",
3540 /*15*/  "\005\000\002\006\002"
3541         "GDT HA %u, Array Drive %u: error",
3542 /*16*/  "\007\000\002\006\002\010\002"
3543         "GDT HA %u, Array Drive %u: failed drive replaced by Cache Drive %u",
3544 /*17*/  "\005\000\002\006\002"
3545         "GDT HA %u, Array Drive %u: parity build failed",
3546 /*18*/  "\005\000\002\006\002"
3547         "GDT HA %u, Array Drive %u: drive rebuild failed",
3548 /*19*/  "\005\000\002\010\002"
3549         "GDT HA %u, Test of Hot Fix %u failed",
3550 /*20*/  "\005\000\002\006\002"
3551         "GDT HA %u, Array Drive %u: drive build finished successfully",
3552 /*21*/  "\005\000\002\006\002"
3553         "GDT HA %u, Array Drive %u: drive rebuild finished successfully",
3554 /*22*/  "\007\000\002\006\002\010\002"
3555         "GDT HA %u, Array Drive %u: Hot Fix %u activated",
3556 /*23*/  "\005\000\002\006\002"
3557         "GDT HA %u, Host Drive %u: processing of i/o aborted due to serious drive error",
3558 /*24*/  "\005\000\002\010\002"
3559         "GDT HA %u, mirror update on Cache Drive %u completed",
3560 /*25*/  "\005\000\002\010\002"
3561         "GDT HA %u, mirror update on Cache Drive %lu failed",
3562 /*26*/  "\005\000\002\006\002"
3563         "GDT HA %u, Array Drive %u: drive rebuild started",
3564 /*27*/  "\005\000\002\012\001"
3565         "GDT HA %u, Fault bus %u: SHELF OK detected",
3566 /*28*/  "\005\000\002\012\001"
3567         "GDT HA %u, Fault bus %u: SHELF not OK detected",
3568 /*29*/  "\007\000\002\012\001\013\001"
3569         "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug started",
3570 /*30*/  "\007\000\002\012\001\013\001"
3571         "GDT HA %u, Fault bus %u, ID %u: new disk detected",
3572 /*31*/  "\007\000\002\012\001\013\001"
3573         "GDT HA %u, Fault bus %u, ID %u: old disk detected",
3574 /*32*/  "\007\000\002\012\001\013\001"
3575         "GDT HA %u, Fault bus %u, ID %u: plugging an active disk is invalid",
3576 /*33*/  "\007\000\002\012\001\013\001"
3577         "GDT HA %u, Fault bus %u, ID %u: invalid device detected",
3578 /*34*/  "\011\000\002\012\001\013\001\006\004"
3579         "GDT HA %u, Fault bus %u, ID %u: insufficient disk capacity (%lu MB required)",
3580 /*35*/  "\007\000\002\012\001\013\001"
3581         "GDT HA %u, Fault bus %u, ID %u: disk write protected",
3582 /*36*/  "\007\000\002\012\001\013\001"
3583         "GDT HA %u, Fault bus %u, ID %u: disk not available",
3584 /*37*/  "\007\000\002\012\001\006\004"
3585         "GDT HA %u, Fault bus %u: swap detected (%lu)",
3586 /*38*/  "\007\000\002\012\001\013\001"
3587         "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug finished successfully",
3588 /*39*/  "\007\000\002\012\001\013\001"
3589         "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug aborted due to user Hot Plug",
3590 /*40*/  "\007\000\002\012\001\013\001"
3591         "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug aborted",
3592 /*41*/  "\007\000\002\012\001\013\001"
3593         "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug for Hot Fix started",
3594 /*42*/  "\005\000\002\006\002"
3595         "GDT HA %u, Array Drive %u: drive build started",
3596 /*43*/  "\003\000\002"
3597         "GDT HA %u, DRAM parity error detected",
3598 /*44*/  "\005\000\002\006\002"
3599         "GDT HA %u, Mirror Drive %u: update started",
3600 /*45*/  "\007\000\002\006\002\010\002"
3601         "GDT HA %u, Mirror Drive %u: Hot Fix %u activated",
3602 /*46*/  "\005\000\002\006\002"
3603         "GDT HA %u, Array Drive %u: no matching Pool Hot Fix Drive available",
3604 /*47*/  "\005\000\002\006\002"
3605         "GDT HA %u, Array Drive %u: Pool Hot Fix Drive available",
3606 /*48*/  "\005\000\002\006\002"
3607         "GDT HA %u, Mirror Drive %u: no matching Pool Hot Fix Drive available",
3608 /*49*/  "\005\000\002\006\002"
3609         "GDT HA %u, Mirror Drive %u: Pool Hot Fix Drive available",
3610 /*50*/  "\007\000\002\012\001\013\001"
3611         "GDT HA %u, SCSI bus %u, ID %u: IGNORE_WIDE_RESIDUE message received",
3612 /*51*/  "\005\000\002\006\002"
3613         "GDT HA %u, Array Drive %u: expand started",
3614 /*52*/  "\005\000\002\006\002"
3615         "GDT HA %u, Array Drive %u: expand finished successfully",
3616 /*53*/  "\005\000\002\006\002"
3617         "GDT HA %u, Array Drive %u: expand failed",
3618 /*54*/  "\003\000\002"
3619         "GDT HA %u, CPU temperature critical",
3620 /*55*/  "\003\000\002"
3621         "GDT HA %u, CPU temperature OK",
3622 /*56*/  "\005\000\002\006\004"
3623         "GDT HA %u, Host drive %lu created",
3624 /*57*/  "\005\000\002\006\002"
3625         "GDT HA %u, Array Drive %u: expand restarted",
3626 /*58*/  "\005\000\002\006\002"
3627         "GDT HA %u, Array Drive %u: expand stopped",
3628 /*59*/  "\005\000\002\010\002"
3629         "GDT HA %u, Mirror Drive %u: drive build quited",
3630 /*60*/  "\005\000\002\006\002"
3631         "GDT HA %u, Array Drive %u: parity build quited",
3632 /*61*/  "\005\000\002\006\002"
3633         "GDT HA %u, Array Drive %u: drive rebuild quited",
3634 /*62*/  "\005\000\002\006\002"
3635         "GDT HA %u, Array Drive %u: parity verify started",
3636 /*63*/  "\005\000\002\006\002"
3637         "GDT HA %u, Array Drive %u: parity verify done",
3638 /*64*/  "\005\000\002\006\002"
3639         "GDT HA %u, Array Drive %u: parity verify failed",
3640 /*65*/  "\005\000\002\006\002"
3641         "GDT HA %u, Array Drive %u: parity error detected",
3642 /*66*/  "\005\000\002\006\002"
3643         "GDT HA %u, Array Drive %u: parity verify quited",
3644 /*67*/  "\005\000\002\006\002"
3645         "GDT HA %u, Host Drive %u reserved",
3646 /*68*/  "\005\000\002\006\002"
3647         "GDT HA %u, Host Drive %u mounted and released",
3648 /*69*/  "\005\000\002\006\002"
3649         "GDT HA %u, Host Drive %u released",
3650 /*70*/  "\003\000\002"
3651         "GDT HA %u, DRAM error detected and corrected with ECC",
3652 /*71*/  "\003\000\002"
3653         "GDT HA %u, Uncorrectable DRAM error detected with ECC",
3654 /*72*/  "\011\000\002\012\001\013\001\014\001"
3655         "GDT HA %u, SCSI bus %u, ID %u, LUN %u: reassigning block",
3656 /*73*/  "\005\000\002\006\002"
3657         "GDT HA %u, Host drive %u resetted locally",
3658 /*74*/  "\005\000\002\006\002"
3659         "GDT HA %u, Host drive %u resetted remotely",
3660 /*75*/  "\003\000\002"
3661         "GDT HA %u, async. status 75 unknown",
3662 };
3663
3664
3665 static int gdth_async_event(gdth_ha_str *ha)
3666 {
3667     gdth_cmd_str *cmdp;
3668     int cmd_index;
3669
3670     cmdp= ha->pccb;
3671     TRACE2(("gdth_async_event() ha %d serv %d\n",
3672             ha->hanum, ha->service));
3673
3674     if (ha->service == SCREENSERVICE) {
3675         if (ha->status == MSG_REQUEST) {
3676             while (gdth_test_busy(ha))
3677                 gdth_delay(0);
3678             cmdp->Service       = SCREENSERVICE;
3679             cmdp->RequestBuffer = SCREEN_CMND;
3680             cmd_index = gdth_get_cmd_index(ha);
3681             gdth_set_sema0(ha);
3682             cmdp->OpCode        = GDT_READ;
3683             cmdp->BoardNode     = LOCALBOARD;
3684             cmdp->u.screen.reserved  = 0;
3685             cmdp->u.screen.su.msg.msg_handle= MSG_INV_HANDLE;
3686             cmdp->u.screen.su.msg.msg_addr  = ha->msg_phys;
3687             ha->cmd_offs_dpmem = 0;
3688             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.screen.su.msg.msg_addr)
3689                 + sizeof(ulong64);
3690             ha->cmd_cnt = 0;
3691             gdth_copy_command(ha);
3692             if (ha->type == GDT_EISA)
3693                 printk("[EISA slot %d] ",(ushort)ha->brd_phys);
3694             else if (ha->type == GDT_ISA)
3695                 printk("[DPMEM 0x%4X] ",(ushort)ha->brd_phys);
3696             else
3697                 printk("[PCI %d/%d] ",(ushort)(ha->brd_phys>>8),
3698                        (ushort)((ha->brd_phys>>3)&0x1f));
3699             gdth_release_event(ha);
3700         }
3701
3702     } else {
3703         if (ha->type == GDT_PCIMPR &&
3704             (ha->fw_vers & 0xff) >= 0x1a) {
3705             ha->dvr.size = 0;
3706             ha->dvr.eu.async.ionode = ha->hanum;
3707             ha->dvr.eu.async.status  = ha->status;
3708             /* severity and event_string already set! */
3709         } else {
3710             ha->dvr.size = sizeof(ha->dvr.eu.async);
3711             ha->dvr.eu.async.ionode   = ha->hanum;
3712             ha->dvr.eu.async.service = ha->service;
3713             ha->dvr.eu.async.status  = ha->status;
3714             ha->dvr.eu.async.info    = ha->info;
3715             *(ulong32 *)ha->dvr.eu.async.scsi_coord  = ha->info2;
3716         }
3717         gdth_store_event( ha, ES_ASYNC, ha->service, &ha->dvr );
3718         gdth_log_event( &ha->dvr, NULL );
3719
3720         /* new host drive from expand? */
3721         if (ha->service == CACHESERVICE && ha->status == 56) {
3722             TRACE2(("gdth_async_event(): new host drive %d created\n",
3723                     (ushort)ha->info));
3724             /* gdth_analyse_hdrive(hanum, (ushort)ha->info); */
3725         }
3726     }
3727     return 1;
3728 }
3729
3730 static void gdth_log_event(gdth_evt_data *dvr, char *buffer)
3731 {
3732     gdth_stackframe stack;
3733     char *f = NULL;
3734     int i,j;
3735
3736     TRACE2(("gdth_log_event()\n"));
3737     if (dvr->size == 0) {
3738         if (buffer == NULL) {
3739             printk("Adapter %d: %s\n",dvr->eu.async.ionode,dvr->event_string);
3740         } else {
3741             sprintf(buffer,"Adapter %d: %s\n",
3742                 dvr->eu.async.ionode,dvr->event_string);
3743         }
3744     } else if (dvr->eu.async.service == CACHESERVICE &&
3745         INDEX_OK(dvr->eu.async.status, async_cache_tab)) {
3746         TRACE2(("GDT: Async. event cache service, event no.: %d\n",
3747                 dvr->eu.async.status));
3748
3749         f = async_cache_tab[dvr->eu.async.status];
3750
3751         /* i: parameter to push, j: stack element to fill */
3752         for (j=0,i=1; i < f[0]; i+=2) {
3753             switch (f[i+1]) {
3754               case 4:
3755                 stack.b[j++] = *(ulong32*)&dvr->eu.stream[(int)f[i]];
3756                 break;
3757               case 2:
3758                 stack.b[j++] = *(ushort*)&dvr->eu.stream[(int)f[i]];
3759                 break;
3760               case 1:
3761                 stack.b[j++] = *(unchar*)&dvr->eu.stream[(int)f[i]];
3762                 break;
3763               default:
3764                 break;
3765             }
3766         }
3767
3768         if (buffer == NULL) {
3769             printk(&f[(int)f[0]],stack);
3770             printk("\n");
3771         } else {
3772             sprintf(buffer,&f[(int)f[0]],stack);
3773         }
3774
3775     } else {
3776         if (buffer == NULL) {
3777             printk("GDT HA %u, Unknown async. event service %d event no. %d\n",
3778                    dvr->eu.async.ionode,dvr->eu.async.service,dvr->eu.async.status);
3779         } else {
3780             sprintf(buffer,"GDT HA %u, Unknown async. event service %d event no. %d",
3781                     dvr->eu.async.ionode,dvr->eu.async.service,dvr->eu.async.status);
3782         }
3783     }
3784 }
3785
3786 #ifdef GDTH_STATISTICS
3787 static void gdth_timeout(ulong data)
3788 {
3789     ulong32 i;
3790     Scsi_Cmnd *nscp;
3791     gdth_ha_str *ha;
3792     ulong flags;
3793
3794     ha = list_first_entry(&gdth_instances, gdth_ha_str, list);
3795     spin_lock_irqsave(&ha->smp_lock, flags);
3796
3797     for (act_stats=0,i=0; i<GDTH_MAXCMDS; ++i)
3798         if (ha->cmd_tab[i].cmnd != UNUSED_CMND)
3799             ++act_stats;
3800
3801     for (act_rq=0,nscp=ha->req_first; nscp; nscp=(Scsi_Cmnd*)nscp->SCp.ptr)
3802         ++act_rq;
3803
3804     TRACE2(("gdth_to(): ints %d, ios %d, act_stats %d, act_rq %d\n",
3805             act_ints, act_ios, act_stats, act_rq));
3806     act_ints = act_ios = 0;
3807
3808     gdth_timer.expires = jiffies + 30 * HZ;
3809     add_timer(&gdth_timer);
3810     spin_unlock_irqrestore(&ha->smp_lock, flags);
3811 }
3812 #endif
3813
3814 static void __init internal_setup(char *str,int *ints)
3815 {
3816     int i, argc;
3817     char *cur_str, *argv;
3818
3819     TRACE2(("internal_setup() str %s ints[0] %d\n",
3820             str ? str:"NULL", ints ? ints[0]:0));
3821
3822     /* read irq[] from ints[] */
3823     if (ints) {
3824         argc = ints[0];
3825         if (argc > 0) {
3826             if (argc > MAXHA)
3827                 argc = MAXHA;
3828             for (i = 0; i < argc; ++i)
3829                 irq[i] = ints[i+1];
3830         }
3831     }
3832
3833     /* analyse string */
3834     argv = str;
3835     while (argv && (cur_str = strchr(argv, ':'))) {
3836         int val = 0, c = *++cur_str;
3837
3838         if (c == 'n' || c == 'N')
3839             val = 0;
3840         else if (c == 'y' || c == 'Y')
3841             val = 1;
3842         else
3843             val = (int)simple_strtoul(cur_str, NULL, 0);
3844
3845         if (!strncmp(argv, "disable:", 8))
3846             disable = val;
3847         else if (!strncmp(argv, "reserve_mode:", 13))
3848             reserve_mode = val;
3849         else if (!strncmp(argv, "reverse_scan:", 13))
3850             reverse_scan = val;
3851         else if (!strncmp(argv, "hdr_channel:", 12))
3852             hdr_channel = val;
3853         else if (!strncmp(argv, "max_ids:", 8))
3854             max_ids = val;
3855         else if (!strncmp(argv, "rescan:", 7))
3856             rescan = val;
3857         else if (!strncmp(argv, "shared_access:", 14))
3858             shared_access = val;
3859         else if (!strncmp(argv, "probe_eisa_isa:", 15))
3860             probe_eisa_isa = val;
3861         else if (!strncmp(argv, "reserve_list:", 13)) {
3862             reserve_list[0] = val;
3863             for (i = 1; i < MAX_RES_ARGS; i++) {
3864                 cur_str = strchr(cur_str, ',');
3865                 if (!cur_str)
3866                     break;
3867                 if (!isdigit((int)*++cur_str)) {
3868                     --cur_str;
3869                     break;
3870                 }
3871                 reserve_list[i] =
3872                     (int)simple_strtoul(cur_str, NULL, 0);
3873             }
3874             if (!cur_str)
3875                 break;
3876             argv = ++cur_str;
3877             continue;
3878         }
3879
3880         if ((argv = strchr(argv, ',')))
3881             ++argv;
3882     }
3883 }
3884
3885 int __init option_setup(char *str)
3886 {
3887     int ints[MAXHA];
3888     char *cur = str;
3889     int i = 1;
3890
3891     TRACE2(("option_setup() str %s\n", str ? str:"NULL"));
3892
3893     while (cur && isdigit(*cur) && i <= MAXHA) {
3894         ints[i++] = simple_strtoul(cur, NULL, 0);
3895         if ((cur = strchr(cur, ',')) != NULL) cur++;
3896     }
3897
3898     ints[0] = i - 1;
3899     internal_setup(cur, ints);
3900     return 1;
3901 }
3902
3903 static const char *gdth_ctr_name(gdth_ha_str *ha)
3904 {
3905     TRACE2(("gdth_ctr_name()\n"));
3906
3907     if (ha->type == GDT_EISA) {
3908         switch (ha->stype) {
3909           case GDT3_ID:
3910             return("GDT3000/3020");
3911           case GDT3A_ID:
3912             return("GDT3000A/3020A/3050A");
3913           case GDT3B_ID:
3914             return("GDT3000B/3010A");
3915         }
3916     } else if (ha->type == GDT_ISA) {
3917         return("GDT2000/2020");
3918     } else if (ha->type == GDT_PCI) {
3919         switch (ha->pdev->device) {
3920           case PCI_DEVICE_ID_VORTEX_GDT60x0:
3921             return("GDT6000/6020/6050");
3922           case PCI_DEVICE_ID_VORTEX_GDT6000B:
3923             return("GDT6000B/6010");
3924         }
3925     }
3926     /* new controllers (GDT_PCINEW, GDT_PCIMPR, ..) use board_info IOCTL! */
3927
3928     return("");
3929 }
3930
3931 static const char *gdth_info(struct Scsi_Host *shp)
3932 {
3933     gdth_ha_str *ha = shost_priv(shp);
3934
3935     TRACE2(("gdth_info()\n"));
3936     return ((const char *)ha->binfo.type_string);
3937 }
3938
3939 static int gdth_eh_bus_reset(Scsi_Cmnd *scp)
3940 {
3941     gdth_ha_str *ha = shost_priv(scp->device->host);
3942     int i;
3943     ulong flags;
3944     Scsi_Cmnd *cmnd;
3945     unchar b;
3946
3947     TRACE2(("gdth_eh_bus_reset()\n"));
3948
3949     b = scp->device->channel;
3950
3951     /* clear command tab */
3952     spin_lock_irqsave(&ha->smp_lock, flags);
3953     for (i = 0; i < GDTH_MAXCMDS; ++i) {
3954         cmnd = ha->cmd_tab[i].cmnd;
3955         if (!SPECIAL_SCP(cmnd) && cmnd->device->channel == b)
3956             ha->cmd_tab[i].cmnd = UNUSED_CMND;
3957     }
3958     spin_unlock_irqrestore(&ha->smp_lock, flags);
3959
3960     if (b == ha->virt_bus) {
3961         /* host drives */
3962         for (i = 0; i < MAX_HDRIVES; ++i) {
3963             if (ha->hdr[i].present) {
3964                 spin_lock_irqsave(&ha->smp_lock, flags);
3965                 gdth_polling = TRUE;
3966                 while (gdth_test_busy(ha))
3967                     gdth_delay(0);
3968                 if (gdth_internal_cmd(ha, CACHESERVICE,
3969                                       GDT_CLUST_RESET, i, 0, 0))
3970                     ha->hdr[i].cluster_type &= ~CLUSTER_RESERVED;
3971                 gdth_polling = FALSE;
3972                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3973             }
3974         }
3975     } else {
3976         /* raw devices */
3977         spin_lock_irqsave(&ha->smp_lock, flags);
3978         for (i = 0; i < MAXID; ++i)
3979             ha->raw[BUS_L2P(ha,b)].io_cnt[i] = 0;
3980         gdth_polling = TRUE;
3981         while (gdth_test_busy(ha))
3982             gdth_delay(0);
3983         gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_RESET_BUS,
3984                           BUS_L2P(ha,b), 0, 0);
3985         gdth_polling = FALSE;
3986         spin_unlock_irqrestore(&ha->smp_lock, flags);
3987     }
3988     return SUCCESS;
3989 }
3990
3991 static int gdth_bios_param(struct scsi_device *sdev,struct block_device *bdev,sector_t cap,int *ip)
3992 {
3993     unchar b, t;
3994     gdth_ha_str *ha = shost_priv(sdev->host);
3995     struct scsi_device *sd;
3996     unsigned capacity;
3997
3998     sd = sdev;
3999     capacity = cap;
4000     b = sd->channel;
4001     t = sd->id;
4002     TRACE2(("gdth_bios_param() ha %d bus %d target %d\n", ha->hanum, b, t));
4003
4004     if (b != ha->virt_bus || ha->hdr[t].heads == 0) {
4005         /* raw device or host drive without mapping information */
4006         TRACE2(("Evaluate mapping\n"));
4007         gdth_eval_mapping(capacity,&ip[2],&ip[0],&ip[1]);
4008     } else {
4009         ip[0] = ha->hdr[t].heads;
4010         ip[1] = ha->hdr[t].secs;
4011         ip[2] = capacity / ip[0] / ip[1];
4012     }
4013
4014     TRACE2(("gdth_bios_param(): %d heads, %d secs, %d cyls\n",
4015             ip[0],ip[1],ip[2]));
4016     return 0;
4017 }
4018
4019
4020 static int gdth_queuecommand(struct scsi_cmnd *scp,
4021                                 void (*done)(struct scsi_cmnd *))
4022 {
4023     gdth_ha_str *ha = shost_priv(scp->device->host);
4024     struct gdth_cmndinfo *cmndinfo;
4025
4026     TRACE(("gdth_queuecommand() cmd 0x%x\n", scp->cmnd[0]));
4027
4028     cmndinfo = gdth_get_cmndinfo(ha);
4029     BUG_ON(!cmndinfo);
4030
4031     scp->scsi_done = done;
4032     gdth_update_timeout(scp, scp->timeout_per_command * 6);
4033     cmndinfo->priority = DEFAULT_PRI;
4034
4035     gdth_set_bufflen(scp, scsi_bufflen(scp));
4036     gdth_set_sg_count(scp, scsi_sg_count(scp));
4037     gdth_set_sglist(scp, scsi_sglist(scp));
4038
4039     return __gdth_queuecommand(ha, scp, cmndinfo);
4040 }
4041
4042 static int __gdth_queuecommand(gdth_ha_str *ha, struct scsi_cmnd *scp,
4043                                 struct gdth_cmndinfo *cmndinfo)
4044 {
4045     scp->host_scribble = (unsigned char *)cmndinfo;
4046     cmndinfo->wait_for_completion = 1;
4047     cmndinfo->phase = -1;
4048     cmndinfo->OpCode = -1;
4049
4050 #ifdef GDTH_STATISTICS
4051     ++act_ios;
4052 #endif
4053
4054     gdth_putq(ha, scp, cmndinfo->priority);
4055     gdth_next(ha);
4056     return 0;
4057 }
4058
4059
4060 static int gdth_open(struct inode *inode, struct file *filep)
4061 {
4062     gdth_ha_str *ha;
4063
4064     list_for_each_entry(ha, &gdth_instances, list) {
4065         if (!ha->sdev)
4066             ha->sdev = scsi_get_host_dev(ha->shost);
4067     }
4068
4069     TRACE(("gdth_open()\n"));
4070     return 0;
4071 }
4072
4073 static int gdth_close(struct inode *inode, struct file *filep)
4074 {
4075     TRACE(("gdth_close()\n"));
4076     return 0;
4077 }
4078
4079 static int ioc_event(void __user *arg)
4080 {
4081     gdth_ioctl_event evt;
4082     gdth_ha_str *ha;
4083     ulong flags;
4084
4085     if (copy_from_user(&evt, arg, sizeof(gdth_ioctl_event)))
4086         return -EFAULT;
4087     ha = gdth_find_ha(evt.ionode);
4088     if (!ha)
4089         return -EFAULT;
4090
4091     if (evt.erase == 0xff) {
4092         if (evt.event.event_source == ES_TEST)
4093             evt.event.event_data.size=sizeof(evt.event.event_data.eu.test);
4094         else if (evt.event.event_source == ES_DRIVER)
4095             evt.event.event_data.size=sizeof(evt.event.event_data.eu.driver);
4096         else if (evt.event.event_source == ES_SYNC)
4097             evt.event.event_data.size=sizeof(evt.event.event_data.eu.sync);
4098         else
4099             evt.event.event_data.size=sizeof(evt.event.event_data.eu.async);
4100         spin_lock_irqsave(&ha->smp_lock, flags);
4101         gdth_store_event(ha, evt.event.event_source, evt.event.event_idx,
4102                          &evt.event.event_data);
4103         spin_unlock_irqrestore(&ha->smp_lock, flags);
4104     } else if (evt.erase == 0xfe) {
4105         gdth_clear_events();
4106     } else if (evt.erase == 0) {
4107         evt.handle = gdth_read_event(ha, evt.handle, &evt.event);
4108     } else {
4109         gdth_readapp_event(ha, evt.erase, &evt.event);
4110     }
4111     if (copy_to_user(arg, &evt, sizeof(gdth_ioctl_event)))
4112         return -EFAULT;
4113     return 0;
4114 }
4115
4116 static int ioc_lockdrv(void __user *arg)
4117 {
4118     gdth_ioctl_lockdrv ldrv;
4119     unchar i, j;
4120     ulong flags;
4121     gdth_ha_str *ha;
4122
4123     if (copy_from_user(&ldrv, arg, sizeof(gdth_ioctl_lockdrv)))
4124         return -EFAULT;
4125     ha = gdth_find_ha(ldrv.ionode);
4126     if (!ha)
4127         return -EFAULT;
4128
4129     for (i = 0; i < ldrv.drive_cnt && i < MAX_HDRIVES; ++i) {
4130         j = ldrv.drives[i];
4131         if (j >= MAX_HDRIVES || !ha->hdr[j].present)
4132             continue;
4133         if (ldrv.lock) {
4134             spin_lock_irqsave(&ha->smp_lock, flags);
4135             ha->hdr[j].lock = 1;
4136             spin_unlock_irqrestore(&ha->smp_lock, flags);
4137             gdth_wait_completion(ha, ha->bus_cnt, j);
4138             gdth_stop_timeout(ha, ha->bus_cnt, j);
4139         } else {
4140             spin_lock_irqsave(&ha->smp_lock, flags);
4141             ha->hdr[j].lock = 0;
4142             spin_unlock_irqrestore(&ha->smp_lock, flags);
4143             gdth_start_timeout(ha, ha->bus_cnt, j);
4144             gdth_next(ha);
4145         }
4146     }
4147     return 0;
4148 }
4149
4150 static int ioc_resetdrv(void __user *arg, char *cmnd)
4151 {
4152     gdth_ioctl_reset res;
4153     gdth_cmd_str cmd;
4154     gdth_ha_str *ha;
4155     int rval;
4156
4157     if (copy_from_user(&res, arg, sizeof(gdth_ioctl_reset)) ||
4158         res.number >= MAX_HDRIVES)
4159         return -EFAULT;
4160     ha = gdth_find_ha(res.ionode);
4161     if (!ha)
4162         return -EFAULT;
4163
4164     if (!ha->hdr[res.number].present)
4165         return 0;
4166     memset(&cmd, 0, sizeof(gdth_cmd_str));
4167     cmd.Service = CACHESERVICE;
4168     cmd.OpCode = GDT_CLUST_RESET;
4169     if (ha->cache_feat & GDT_64BIT)
4170         cmd.u.cache64.DeviceNo = res.number;
4171     else
4172         cmd.u.cache.DeviceNo = res.number;
4173
4174     rval = __gdth_execute(ha->sdev, &cmd, cmnd, 30, NULL);
4175     if (rval < 0)
4176         return rval;
4177     res.status = rval;
4178
4179     if (copy_to_user(arg, &res, sizeof(gdth_ioctl_reset)))
4180         return -EFAULT;
4181     return 0;
4182 }
4183
4184 static int ioc_general(void __user *arg, char *cmnd)
4185 {
4186     gdth_ioctl_general gen;
4187     char *buf = NULL;
4188     ulong64 paddr;
4189     gdth_ha_str *ha;
4190     int rval;
4191
4192     if (copy_from_user(&gen, arg, sizeof(gdth_ioctl_general)))
4193         return -EFAULT;
4194     ha = gdth_find_ha(gen.ionode);
4195     if (!ha)
4196         return -EFAULT;
4197     if (gen.data_len + gen.sense_len != 0) {
4198         if (!(buf = gdth_ioctl_alloc(ha, gen.data_len + gen.sense_len,
4199                                      FALSE, &paddr)))
4200             return -EFAULT;
4201         if (copy_from_user(buf, arg + sizeof(gdth_ioctl_general),
4202                            gen.data_len + gen.sense_len)) {
4203             gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
4204             return -EFAULT;
4205         }
4206
4207         if (gen.command.OpCode == GDT_IOCTL) {
4208             gen.command.u.ioctl.p_param = paddr;
4209         } else if (gen.command.Service == CACHESERVICE) {
4210             if (ha->cache_feat & GDT_64BIT) {
4211                 /* copy elements from 32-bit IOCTL structure */
4212                 gen.command.u.cache64.BlockCnt = gen.command.u.cache.BlockCnt;
4213                 gen.command.u.cache64.BlockNo = gen.command.u.cache.BlockNo;
4214                 gen.command.u.cache64.DeviceNo = gen.command.u.cache.DeviceNo;
4215                 /* addresses */
4216                 if (ha->cache_feat & SCATTER_GATHER) {
4217                     gen.command.u.cache64.DestAddr = (ulong64)-1;
4218                     gen.command.u.cache64.sg_canz = 1;
4219                     gen.command.u.cache64.sg_lst[0].sg_ptr = paddr;
4220                     gen.command.u.cache64.sg_lst[0].sg_len = gen.data_len;
4221                     gen.command.u.cache64.sg_lst[1].sg_len = 0;
4222                 } else {
4223                     gen.command.u.cache64.DestAddr = paddr;
4224                     gen.command.u.cache64.sg_canz = 0;
4225                 }
4226             } else {
4227                 if (ha->cache_feat & SCATTER_GATHER) {
4228                     gen.command.u.cache.DestAddr = 0xffffffff;
4229                     gen.command.u.cache.sg_canz = 1;
4230                     gen.command.u.cache.sg_lst[0].sg_ptr = (ulong32)paddr;
4231                     gen.command.u.cache.sg_lst[0].sg_len = gen.data_len;
4232                     gen.command.u.cache.sg_lst[1].sg_len = 0;
4233                 } else {
4234                     gen.command.u.cache.DestAddr = paddr;
4235                     gen.command.u.cache.sg_canz = 0;
4236                 }
4237             }
4238         } else if (gen.command.Service == SCSIRAWSERVICE) {
4239             if (ha->raw_feat & GDT_64BIT) {
4240                 /* copy elements from 32-bit IOCTL structure */
4241                 char cmd[16];
4242                 gen.command.u.raw64.sense_len = gen.command.u.raw.sense_len;
4243                 gen.command.u.raw64.bus = gen.command.u.raw.bus;
4244                 gen.command.u.raw64.lun = gen.command.u.raw.lun;
4245                 gen.command.u.raw64.target = gen.command.u.raw.target;
4246                 memcpy(cmd, gen.command.u.raw.cmd, 16);
4247                 memcpy(gen.command.u.raw64.cmd, cmd, 16);
4248                 gen.command.u.raw64.clen = gen.command.u.raw.clen;
4249                 gen.command.u.raw64.sdlen = gen.command.u.raw.sdlen;
4250                 gen.command.u.raw64.direction = gen.command.u.raw.direction;
4251                 /* addresses */
4252                 if (ha->raw_feat & SCATTER_GATHER) {
4253                     gen.command.u.raw64.sdata = (ulong64)-1;
4254                     gen.command.u.raw64.sg_ranz = 1;
4255                     gen.command.u.raw64.sg_lst[0].sg_ptr = paddr;
4256                     gen.command.u.raw64.sg_lst[0].sg_len = gen.data_len;
4257                     gen.command.u.raw64.sg_lst[1].sg_len = 0;
4258                 } else {
4259                     gen.command.u.raw64.sdata = paddr;
4260                     gen.command.u.raw64.sg_ranz = 0;
4261                 }
4262                 gen.command.u.raw64.sense_data = paddr + gen.data_len;
4263             } else {
4264                 if (ha->raw_feat & SCATTER_GATHER) {
4265                     gen.command.u.raw.sdata = 0xffffffff;
4266                     gen.command.u.raw.sg_ranz = 1;
4267                     gen.command.u.raw.sg_lst[0].sg_ptr = (ulong32)paddr;
4268                     gen.command.u.raw.sg_lst[0].sg_len = gen.data_len;
4269                     gen.command.u.raw.sg_lst[1].sg_len = 0;
4270                 } else {
4271                     gen.command.u.raw.sdata = paddr;
4272                     gen.command.u.raw.sg_ranz = 0;
4273                 }
4274                 gen.command.u.raw.sense_data = (ulong32)paddr + gen.data_len;
4275             }
4276         } else {
4277             gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
4278             return -EFAULT;
4279         }
4280     }
4281
4282     rval = __gdth_execute(ha->sdev, &gen.command, cmnd, gen.timeout, &gen.info);
4283     if (rval < 0)
4284         return rval;
4285     gen.status = rval;
4286
4287     if (copy_to_user(arg + sizeof(gdth_ioctl_general), buf,
4288                      gen.data_len + gen.sense_len)) {
4289         gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
4290         return -EFAULT;
4291     }
4292     if (copy_to_user(arg, &gen,
4293         sizeof(gdth_ioctl_general) - sizeof(gdth_cmd_str))) {
4294         gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
4295         return -EFAULT;
4296     }
4297     gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
4298     return 0;
4299 }
4300
4301 static int ioc_hdrlist(void __user *arg, char *cmnd)
4302 {
4303     gdth_ioctl_rescan *rsc;
4304     gdth_cmd_str *cmd;
4305     gdth_ha_str *ha;
4306     unchar i;
4307     int rc = -ENOMEM;
4308     u32 cluster_type = 0;
4309
4310     rsc = kmalloc(sizeof(*rsc), GFP_KERNEL);
4311     cmd = kmalloc(sizeof(*cmd), GFP_KERNEL);
4312     if (!rsc || !cmd)
4313         goto free_fail;
4314
4315     if (copy_from_user(rsc, arg, sizeof(gdth_ioctl_rescan)) ||
4316         (NULL == (ha = gdth_find_ha(rsc->ionode)))) {
4317         rc = -EFAULT;
4318         goto free_fail;
4319     }
4320     memset(cmd, 0, sizeof(gdth_cmd_str));
4321
4322     for (i = 0; i < MAX_HDRIVES; ++i) {
4323         if (!ha->hdr[i].present) {
4324             rsc->hdr_list[i].bus = 0xff;
4325             continue;
4326         }
4327         rsc->hdr_list[i].bus = ha->virt_bus;
4328         rsc->hdr_list[i].target = i;
4329         rsc->hdr_list[i].lun = 0;
4330         rsc->hdr_list[i].cluster_type = ha->hdr[i].cluster_type;
4331         if (ha->hdr[i].cluster_type & CLUSTER_DRIVE) {
4332             cmd->Service = CACHESERVICE;
4333             cmd->OpCode = GDT_CLUST_INFO;
4334             if (ha->cache_feat & GDT_64BIT)
4335                 cmd->u.cache64.DeviceNo = i;
4336             else
4337                 cmd->u.cache.DeviceNo = i;
4338             if (__gdth_execute(ha->sdev, cmd, cmnd, 30, &cluster_type) == S_OK)
4339                 rsc->hdr_list[i].cluster_type = cluster_type;
4340         }
4341     }
4342
4343     if (copy_to_user(arg, rsc, sizeof(gdth_ioctl_rescan)))
4344         rc = -EFAULT;
4345     else
4346         rc = 0;
4347
4348 free_fail:
4349     kfree(rsc);
4350     kfree(cmd);
4351     return rc;
4352 }
4353
4354 static int ioc_rescan(void __user *arg, char *cmnd)
4355 {
4356     gdth_ioctl_rescan *rsc;
4357     gdth_cmd_str *cmd;
4358     ushort i, status, hdr_cnt;
4359     ulong32 info;
4360     int cyls, hds, secs;
4361     int rc = -ENOMEM;
4362     ulong flags;
4363     gdth_ha_str *ha;
4364
4365     rsc = kmalloc(sizeof(*rsc), GFP_KERNEL);
4366     cmd = kmalloc(sizeof(*cmd), GFP_KERNEL);
4367     if (!cmd || !rsc)
4368         goto free_fail;
4369
4370     if (copy_from_user(rsc, arg, sizeof(gdth_ioctl_rescan)) ||
4371         (NULL == (ha = gdth_find_ha(rsc->ionode)))) {
4372         rc = -EFAULT;
4373         goto free_fail;
4374     }
4375     memset(cmd, 0, sizeof(gdth_cmd_str));
4376
4377     if (rsc->flag == 0) {
4378         /* old method: re-init. cache service */
4379         cmd->Service = CACHESERVICE;
4380         if (ha->cache_feat & GDT_64BIT) {
4381             cmd->OpCode = GDT_X_INIT_HOST;
4382             cmd->u.cache64.DeviceNo = LINUX_OS;
4383         } else {
4384             cmd->OpCode = GDT_INIT;
4385             cmd->u.cache.DeviceNo = LINUX_OS;
4386         }
4387
4388         status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
4389         i = 0;
4390         hdr_cnt = (status == S_OK ? (ushort)info : 0);
4391     } else {
4392         i = rsc->hdr_no;
4393         hdr_cnt = i + 1;
4394     }
4395
4396     for (; i < hdr_cnt && i < MAX_HDRIVES; ++i) {
4397         cmd->Service = CACHESERVICE;
4398         cmd->OpCode = GDT_INFO;
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         rsc->hdr_list[i].bus = ha->virt_bus;
4408         rsc->hdr_list[i].target = i;
4409         rsc->hdr_list[i].lun = 0;
4410         if (status != S_OK) {
4411             ha->hdr[i].present = FALSE;
4412         } else {
4413             ha->hdr[i].present = TRUE;
4414             ha->hdr[i].size = info;
4415             /* evaluate mapping */
4416             ha->hdr[i].size &= ~SECS32;
4417             gdth_eval_mapping(ha->hdr[i].size,&cyls,&hds,&secs);
4418             ha->hdr[i].heads = hds;
4419             ha->hdr[i].secs = secs;
4420             /* round size */
4421             ha->hdr[i].size = cyls * hds * secs;
4422         }
4423         spin_unlock_irqrestore(&ha->smp_lock, flags);
4424         if (status != S_OK)
4425             continue;
4426
4427         /* extended info, if GDT_64BIT, for drives > 2 TB */
4428         /* but we need ha->info2, not yet stored in scp->SCp */
4429
4430         /* devtype, cluster info, R/W attribs */
4431         cmd->Service = CACHESERVICE;
4432         cmd->OpCode = GDT_DEVTYPE;
4433         if (ha->cache_feat & GDT_64BIT)
4434             cmd->u.cache64.DeviceNo = i;
4435         else
4436             cmd->u.cache.DeviceNo = i;
4437
4438         status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
4439
4440         spin_lock_irqsave(&ha->smp_lock, flags);
4441         ha->hdr[i].devtype = (status == S_OK ? (ushort)info : 0);
4442         spin_unlock_irqrestore(&ha->smp_lock, flags);
4443
4444         cmd->Service = CACHESERVICE;
4445         cmd->OpCode = GDT_CLUST_INFO;
4446         if (ha->cache_feat & GDT_64BIT)
4447             cmd->u.cache64.DeviceNo = i;
4448         else
4449             cmd->u.cache.DeviceNo = i;
4450
4451         status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
4452
4453         spin_lock_irqsave(&ha->smp_lock, flags);
4454         ha->hdr[i].cluster_type =
4455             ((status == S_OK && !shared_access) ? (ushort)info : 0);
4456         spin_unlock_irqrestore(&ha->smp_lock, flags);
4457         rsc->hdr_list[i].cluster_type = ha->hdr[i].cluster_type;
4458
4459         cmd->Service = CACHESERVICE;
4460         cmd->OpCode = GDT_RW_ATTRIBS;
4461         if (ha->cache_feat & GDT_64BIT)
4462             cmd->u.cache64.DeviceNo = i;
4463         else
4464             cmd->u.cache.DeviceNo = i;
4465
4466         status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
4467
4468         spin_lock_irqsave(&ha->smp_lock, flags);
4469         ha->hdr[i].rw_attribs = (status == S_OK ? (ushort)info : 0);
4470         spin_unlock_irqrestore(&ha->smp_lock, flags);
4471     }
4472
4473     if (copy_to_user(arg, rsc, sizeof(gdth_ioctl_rescan)))
4474         rc = -EFAULT;
4475     else
4476         rc = 0;
4477
4478 free_fail:
4479     kfree(rsc);
4480     kfree(cmd);
4481     return rc;
4482 }
4483
4484 static int gdth_ioctl(struct inode *inode, struct file *filep,
4485                       unsigned int cmd, unsigned long arg)
4486 {
4487     gdth_ha_str *ha;
4488     Scsi_Cmnd *scp;
4489     ulong flags;
4490     char cmnd[MAX_COMMAND_SIZE];
4491     void __user *argp = (void __user *)arg;
4492
4493     memset(cmnd, 0xff, 12);
4494
4495     TRACE(("gdth_ioctl() cmd 0x%x\n", cmd));
4496
4497     switch (cmd) {
4498       case GDTIOCTL_CTRCNT:
4499       {
4500         int cnt = gdth_ctr_count;
4501         if (put_user(cnt, (int __user *)argp))
4502                 return -EFAULT;
4503         break;
4504       }
4505
4506       case GDTIOCTL_DRVERS:
4507       {
4508         int ver = (GDTH_VERSION<<8) | GDTH_SUBVERSION;
4509         if (put_user(ver, (int __user *)argp))
4510                 return -EFAULT;
4511         break;
4512       }
4513
4514       case GDTIOCTL_OSVERS:
4515       {
4516         gdth_ioctl_osvers osv;
4517
4518         osv.version = (unchar)(LINUX_VERSION_CODE >> 16);
4519         osv.subversion = (unchar)(LINUX_VERSION_CODE >> 8);
4520         osv.revision = (ushort)(LINUX_VERSION_CODE & 0xff);
4521         if (copy_to_user(argp, &osv, sizeof(gdth_ioctl_osvers)))
4522                 return -EFAULT;
4523         break;
4524       }
4525
4526       case GDTIOCTL_CTRTYPE:
4527       {
4528         gdth_ioctl_ctrtype ctrt;
4529
4530         if (copy_from_user(&ctrt, argp, sizeof(gdth_ioctl_ctrtype)) ||
4531             (NULL == (ha = gdth_find_ha(ctrt.ionode))))
4532             return -EFAULT;
4533
4534         if (ha->type == GDT_ISA || ha->type == GDT_EISA) {
4535             ctrt.type = (unchar)((ha->stype>>20) - 0x10);
4536         } else {
4537             if (ha->type != GDT_PCIMPR) {
4538                 ctrt.type = (unchar)((ha->stype<<4) + 6);
4539             } else {
4540                 ctrt.type =
4541                     (ha->oem_id == OEM_ID_INTEL ? 0xfd : 0xfe);
4542                 if (ha->stype >= 0x300)
4543                     ctrt.ext_type = 0x6000 | ha->pdev->subsystem_device;
4544                 else
4545                     ctrt.ext_type = 0x6000 | ha->stype;
4546             }
4547             ctrt.device_id = ha->pdev->device;
4548             ctrt.sub_device_id = ha->pdev->subsystem_device;
4549         }
4550         ctrt.info = ha->brd_phys;
4551         ctrt.oem_id = ha->oem_id;
4552         if (copy_to_user(argp, &ctrt, sizeof(gdth_ioctl_ctrtype)))
4553             return -EFAULT;
4554         break;
4555       }
4556
4557       case GDTIOCTL_GENERAL:
4558         return ioc_general(argp, cmnd);
4559
4560       case GDTIOCTL_EVENT:
4561         return ioc_event(argp);
4562
4563       case GDTIOCTL_LOCKDRV:
4564         return ioc_lockdrv(argp);
4565
4566       case GDTIOCTL_LOCKCHN:
4567       {
4568         gdth_ioctl_lockchn lchn;
4569         unchar i, j;
4570
4571         if (copy_from_user(&lchn, argp, sizeof(gdth_ioctl_lockchn)) ||
4572             (NULL == (ha = gdth_find_ha(lchn.ionode))))
4573             return -EFAULT;
4574
4575         i = lchn.channel;
4576         if (i < ha->bus_cnt) {
4577             if (lchn.lock) {
4578                 spin_lock_irqsave(&ha->smp_lock, flags);
4579                 ha->raw[i].lock = 1;
4580                 spin_unlock_irqrestore(&ha->smp_lock, flags);
4581                 for (j = 0; j < ha->tid_cnt; ++j) {
4582                     gdth_wait_completion(ha, i, j);
4583                     gdth_stop_timeout(ha, i, j);
4584                 }
4585             } else {
4586                 spin_lock_irqsave(&ha->smp_lock, flags);
4587                 ha->raw[i].lock = 0;
4588                 spin_unlock_irqrestore(&ha->smp_lock, flags);
4589                 for (j = 0; j < ha->tid_cnt; ++j) {
4590                     gdth_start_timeout(ha, i, j);
4591                     gdth_next(ha);
4592                 }
4593             }
4594         }
4595         break;
4596       }
4597
4598       case GDTIOCTL_RESCAN:
4599         return ioc_rescan(argp, cmnd);
4600
4601       case GDTIOCTL_HDRLIST:
4602         return ioc_hdrlist(argp, cmnd);
4603
4604       case GDTIOCTL_RESET_BUS:
4605       {
4606         gdth_ioctl_reset res;
4607         int rval;
4608
4609         if (copy_from_user(&res, argp, sizeof(gdth_ioctl_reset)) ||
4610             (NULL == (ha = gdth_find_ha(res.ionode))))
4611             return -EFAULT;
4612
4613         scp  = kzalloc(sizeof(*scp), GFP_KERNEL);
4614         if (!scp)
4615             return -ENOMEM;
4616         scp->device = ha->sdev;
4617         scp->cmd_len = 12;
4618         scp->device->channel = res.number;
4619         rval = gdth_eh_bus_reset(scp);
4620         res.status = (rval == SUCCESS ? S_OK : S_GENERR);
4621         kfree(scp);
4622
4623         if (copy_to_user(argp, &res, sizeof(gdth_ioctl_reset)))
4624             return -EFAULT;
4625         break;
4626       }
4627
4628       case GDTIOCTL_RESET_DRV:
4629         return ioc_resetdrv(argp, cmnd);
4630
4631       default:
4632         break;
4633     }
4634     return 0;
4635 }
4636
4637
4638 /* flush routine */
4639 static void gdth_flush(gdth_ha_str *ha)
4640 {
4641     int             i;
4642     gdth_cmd_str    gdtcmd;
4643     char            cmnd[MAX_COMMAND_SIZE];
4644     memset(cmnd, 0xff, MAX_COMMAND_SIZE);
4645
4646     TRACE2(("gdth_flush() hanum %d\n", ha->hanum));
4647
4648     for (i = 0; i < MAX_HDRIVES; ++i) {
4649         if (ha->hdr[i].present) {
4650             gdtcmd.BoardNode = LOCALBOARD;
4651             gdtcmd.Service = CACHESERVICE;
4652             gdtcmd.OpCode = GDT_FLUSH;
4653             if (ha->cache_feat & GDT_64BIT) {
4654                 gdtcmd.u.cache64.DeviceNo = i;
4655                 gdtcmd.u.cache64.BlockNo = 1;
4656                 gdtcmd.u.cache64.sg_canz = 0;
4657             } else {
4658                 gdtcmd.u.cache.DeviceNo = i;
4659                 gdtcmd.u.cache.BlockNo = 1;
4660                 gdtcmd.u.cache.sg_canz = 0;
4661             }
4662             TRACE2(("gdth_flush(): flush ha %d drive %d\n", ha->hanum, i));
4663
4664             gdth_execute(ha->shost, &gdtcmd, cmnd, 30, NULL);
4665         }
4666     }
4667 }
4668
4669 /* shutdown routine */
4670 static int gdth_halt(struct notifier_block *nb, ulong event, void *buf)
4671 {
4672     gdth_ha_str *ha;
4673 #ifndef __alpha__
4674     gdth_cmd_str    gdtcmd;
4675     char            cmnd[MAX_COMMAND_SIZE];
4676 #endif
4677
4678     if (notifier_disabled)
4679         return NOTIFY_OK;
4680
4681     TRACE2(("gdth_halt() event %d\n",(int)event));
4682     if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF)
4683         return NOTIFY_DONE;
4684
4685     notifier_disabled = 1;
4686     printk("GDT-HA: Flushing all host drives .. ");
4687     list_for_each_entry(ha, &gdth_instances, list) {
4688         gdth_flush(ha);
4689
4690 #ifndef __alpha__
4691         /* controller reset */
4692         memset(cmnd, 0xff, MAX_COMMAND_SIZE);
4693         gdtcmd.BoardNode = LOCALBOARD;
4694         gdtcmd.Service = CACHESERVICE;
4695         gdtcmd.OpCode = GDT_RESET;
4696         TRACE2(("gdth_halt(): reset controller %d\n", ha->hanum));
4697         gdth_execute(ha->shost, &gdtcmd, cmnd, 10, NULL);
4698 #endif
4699     }
4700     printk("Done.\n");
4701
4702 #ifdef GDTH_STATISTICS
4703     del_timer(&gdth_timer);
4704 #endif
4705     return NOTIFY_OK;
4706 }
4707
4708 /* configure lun */
4709 static int gdth_slave_configure(struct scsi_device *sdev)
4710 {
4711     scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
4712     sdev->skip_ms_page_3f = 1;
4713     sdev->skip_ms_page_8 = 1;
4714     return 0;
4715 }
4716
4717 static struct scsi_host_template gdth_template = {
4718         .name                   = "GDT SCSI Disk Array Controller",
4719         .info                   = gdth_info,
4720         .queuecommand           = gdth_queuecommand,
4721         .eh_bus_reset_handler   = gdth_eh_bus_reset,
4722         .slave_configure        = gdth_slave_configure,
4723         .bios_param             = gdth_bios_param,
4724         .proc_info              = gdth_proc_info,
4725         .proc_name              = "gdth",
4726         .can_queue              = GDTH_MAXCMDS,
4727         .this_id                = -1,
4728         .sg_tablesize           = GDTH_MAXSG,
4729         .cmd_per_lun            = GDTH_MAXC_P_L,
4730         .unchecked_isa_dma      = 1,
4731         .use_clustering         = ENABLE_CLUSTERING,
4732 };
4733
4734 #ifdef CONFIG_ISA
4735 static int __init gdth_isa_probe_one(ulong32 isa_bios)
4736 {
4737         struct Scsi_Host *shp;
4738         gdth_ha_str *ha;
4739         dma_addr_t scratch_dma_handle = 0;
4740         int error, i;
4741
4742         if (!gdth_search_isa(isa_bios))
4743                 return -ENXIO;
4744
4745         shp = scsi_host_alloc(&gdth_template, sizeof(gdth_ha_str));
4746         if (!shp)
4747                 return -ENOMEM;
4748         ha = shost_priv(shp);
4749
4750         error = -ENODEV;
4751         if (!gdth_init_isa(isa_bios,ha))
4752                 goto out_host_put;
4753
4754         /* controller found and initialized */
4755         printk("Configuring GDT-ISA HA at BIOS 0x%05X IRQ %u DRQ %u\n",
4756                 isa_bios, ha->irq, ha->drq);
4757
4758         error = request_irq(ha->irq, gdth_interrupt, IRQF_DISABLED, "gdth", ha);
4759         if (error) {
4760                 printk("GDT-ISA: Unable to allocate IRQ\n");
4761                 goto out_host_put;
4762         }
4763
4764         error = request_dma(ha->drq, "gdth");
4765         if (error) {
4766                 printk("GDT-ISA: Unable to allocate DMA channel\n");
4767                 goto out_free_irq;
4768         }
4769
4770         set_dma_mode(ha->drq,DMA_MODE_CASCADE);
4771         enable_dma(ha->drq);
4772         shp->unchecked_isa_dma = 1;
4773         shp->irq = ha->irq;
4774         shp->dma_channel = ha->drq;
4775
4776         ha->hanum = gdth_ctr_count++;
4777         ha->shost = shp;
4778
4779         ha->pccb = &ha->cmdext;
4780         ha->ccb_phys = 0L;
4781         ha->pdev = NULL;
4782
4783         error = -ENOMEM;
4784
4785         ha->pscratch = pci_alloc_consistent(ha->pdev, GDTH_SCRATCH,
4786                                                 &scratch_dma_handle);
4787         if (!ha->pscratch)
4788                 goto out_dec_counters;
4789         ha->scratch_phys = scratch_dma_handle;
4790
4791         ha->pmsg = pci_alloc_consistent(ha->pdev, sizeof(gdth_msg_str),
4792                                                 &scratch_dma_handle);
4793         if (!ha->pmsg)
4794                 goto out_free_pscratch;
4795         ha->msg_phys = scratch_dma_handle;
4796
4797 #ifdef INT_COAL
4798         ha->coal_stat = pci_alloc_consistent(ha->pdev,
4799                                 sizeof(gdth_coal_status) * MAXOFFSETS,
4800                                 &scratch_dma_handle);
4801         if (!ha->coal_stat)
4802                 goto out_free_pmsg;
4803         ha->coal_stat_phys = scratch_dma_handle;
4804 #endif
4805
4806         ha->scratch_busy = FALSE;
4807         ha->req_first = NULL;
4808         ha->tid_cnt = MAX_HDRIVES;
4809         if (max_ids > 0 && max_ids < ha->tid_cnt)
4810                 ha->tid_cnt = max_ids;
4811         for (i = 0; i < GDTH_MAXCMDS; ++i)
4812                 ha->cmd_tab[i].cmnd = UNUSED_CMND;
4813         ha->scan_mode = rescan ? 0x10 : 0;
4814
4815         error = -ENODEV;
4816         if (!gdth_search_drives(ha)) {
4817                 printk("GDT-ISA: Error during device scan\n");
4818                 goto out_free_coal_stat;
4819         }
4820
4821         if (hdr_channel < 0 || hdr_channel > ha->bus_cnt)
4822                 hdr_channel = ha->bus_cnt;
4823         ha->virt_bus = hdr_channel;
4824
4825         if (ha->cache_feat & ha->raw_feat & ha->screen_feat & GDT_64BIT)
4826                 shp->max_cmd_len = 16;
4827
4828         shp->max_id      = ha->tid_cnt;
4829         shp->max_lun     = MAXLUN;
4830         shp->max_channel = ha->bus_cnt;
4831
4832         spin_lock_init(&ha->smp_lock);
4833         gdth_enable_int(ha);
4834
4835         error = scsi_add_host(shp, NULL);
4836         if (error)
4837                 goto out_free_coal_stat;
4838         list_add_tail(&ha->list, &gdth_instances);
4839         return 0;
4840
4841  out_free_coal_stat:
4842 #ifdef INT_COAL
4843         pci_free_consistent(ha->pdev, sizeof(gdth_coal_status) * MAXOFFSETS,
4844                                 ha->coal_stat, ha->coal_stat_phys);
4845  out_free_pmsg:
4846 #endif
4847         pci_free_consistent(ha->pdev, sizeof(gdth_msg_str),
4848                                 ha->pmsg, ha->msg_phys);
4849  out_free_pscratch:
4850         pci_free_consistent(ha->pdev, GDTH_SCRATCH,
4851                                 ha->pscratch, ha->scratch_phys);
4852  out_dec_counters:
4853         gdth_ctr_count--;
4854  out_free_irq:
4855         free_irq(ha->irq, ha);
4856  out_host_put:
4857         scsi_host_put(shp);
4858         return error;
4859 }
4860 #endif /* CONFIG_ISA */
4861
4862 #ifdef CONFIG_EISA
4863 static int __init gdth_eisa_probe_one(ushort eisa_slot)
4864 {
4865         struct Scsi_Host *shp;
4866         gdth_ha_str *ha;
4867         dma_addr_t scratch_dma_handle = 0;
4868         int error, i;
4869
4870         if (!gdth_search_eisa(eisa_slot))
4871                 return -ENXIO;
4872
4873         shp = scsi_host_alloc(&gdth_template, sizeof(gdth_ha_str));
4874         if (!shp)
4875                 return -ENOMEM;
4876         ha = shost_priv(shp);
4877
4878         error = -ENODEV;
4879         if (!gdth_init_eisa(eisa_slot,ha))
4880                 goto out_host_put;
4881
4882         /* controller found and initialized */
4883         printk("Configuring GDT-EISA HA at Slot %d IRQ %u\n",
4884                 eisa_slot >> 12, ha->irq);
4885
4886         error = request_irq(ha->irq, gdth_interrupt, IRQF_DISABLED, "gdth", ha);
4887         if (error) {
4888                 printk("GDT-EISA: Unable to allocate IRQ\n");
4889                 goto out_host_put;
4890         }
4891
4892         shp->unchecked_isa_dma = 0;
4893         shp->irq = ha->irq;
4894         shp->dma_channel = 0xff;
4895
4896         ha->hanum = gdth_ctr_count++;
4897         ha->shost = shp;
4898
4899         TRACE2(("EISA detect Bus 0: hanum %d\n", ha->hanum));
4900
4901         ha->pccb = &ha->cmdext;
4902         ha->ccb_phys = 0L;
4903
4904         error = -ENOMEM;
4905
4906         ha->pdev = NULL;
4907         ha->pscratch = pci_alloc_consistent(ha->pdev, GDTH_SCRATCH,
4908                                                 &scratch_dma_handle);
4909         if (!ha->pscratch)
4910                 goto out_free_irq;
4911         ha->scratch_phys = scratch_dma_handle;
4912
4913         ha->pmsg = pci_alloc_consistent(ha->pdev, sizeof(gdth_msg_str),
4914                                                 &scratch_dma_handle);
4915         if (!ha->pmsg)
4916                 goto out_free_pscratch;
4917         ha->msg_phys = scratch_dma_handle;
4918
4919 #ifdef INT_COAL
4920         ha->coal_stat = pci_alloc_consistent(ha->pdev,
4921                         sizeof(gdth_coal_status) * MAXOFFSETS,
4922                         &scratch_dma_handle);
4923         if (!ha->coal_stat)
4924                 goto out_free_pmsg;
4925         ha->coal_stat_phys = scratch_dma_handle;
4926 #endif
4927
4928         ha->ccb_phys = pci_map_single(ha->pdev,ha->pccb,
4929                         sizeof(gdth_cmd_str), PCI_DMA_BIDIRECTIONAL);
4930         if (!ha->ccb_phys)
4931                 goto out_free_coal_stat;
4932
4933         ha->scratch_busy = FALSE;
4934         ha->req_first = NULL;
4935         ha->tid_cnt = MAX_HDRIVES;
4936         if (max_ids > 0 && max_ids < ha->tid_cnt)
4937                 ha->tid_cnt = max_ids;
4938         for (i = 0; i < GDTH_MAXCMDS; ++i)
4939                 ha->cmd_tab[i].cmnd = UNUSED_CMND;
4940         ha->scan_mode = rescan ? 0x10 : 0;
4941
4942         if (!gdth_search_drives(ha)) {
4943                 printk("GDT-EISA: Error during device scan\n");
4944                 error = -ENODEV;
4945                 goto out_free_ccb_phys;
4946         }
4947
4948         if (hdr_channel < 0 || hdr_channel > ha->bus_cnt)
4949                 hdr_channel = ha->bus_cnt;
4950         ha->virt_bus = hdr_channel;
4951
4952         if (ha->cache_feat & ha->raw_feat & ha->screen_feat & GDT_64BIT)
4953                 shp->max_cmd_len = 16;
4954
4955         shp->max_id      = ha->tid_cnt;
4956         shp->max_lun     = MAXLUN;
4957         shp->max_channel = ha->bus_cnt;
4958
4959         spin_lock_init(&ha->smp_lock);
4960         gdth_enable_int(ha);
4961
4962         error = scsi_add_host(shp, NULL);
4963         if (error)
4964                 goto out_free_coal_stat;
4965         list_add_tail(&ha->list, &gdth_instances);
4966         return 0;
4967
4968  out_free_ccb_phys:
4969         pci_unmap_single(ha->pdev,ha->ccb_phys, sizeof(gdth_cmd_str),
4970                         PCI_DMA_BIDIRECTIONAL);
4971  out_free_coal_stat:
4972 #ifdef INT_COAL
4973         pci_free_consistent(ha->pdev, sizeof(gdth_coal_status) * MAXOFFSETS,
4974                                 ha->coal_stat, ha->coal_stat_phys);
4975  out_free_pmsg:
4976 #endif
4977         pci_free_consistent(ha->pdev, sizeof(gdth_msg_str),
4978                                 ha->pmsg, ha->msg_phys);
4979  out_free_pscratch:
4980         pci_free_consistent(ha->pdev, GDTH_SCRATCH,
4981                                 ha->pscratch, ha->scratch_phys);
4982  out_free_irq:
4983         free_irq(ha->irq, ha);
4984         gdth_ctr_count--;
4985  out_host_put:
4986         scsi_host_put(shp);
4987         return error;
4988 }
4989 #endif /* CONFIG_EISA */
4990
4991 #ifdef CONFIG_PCI
4992 static int __init gdth_pci_probe_one(gdth_pci_str *pcistr, int ctr)
4993 {
4994         struct Scsi_Host *shp;
4995         gdth_ha_str *ha;
4996         dma_addr_t scratch_dma_handle = 0;
4997         int error, i;
4998
4999         shp = scsi_host_alloc(&gdth_template, sizeof(gdth_ha_str));
5000         if (!shp)
5001                 return -ENOMEM;
5002         ha = shost_priv(shp);
5003
5004         error = -ENODEV;
5005         if (!gdth_init_pci(&pcistr[ctr],ha))
5006                 goto out_host_put;
5007
5008         /* controller found and initialized */
5009         printk("Configuring GDT-PCI HA at %d/%d IRQ %u\n",
5010                 pcistr[ctr].pdev->bus->number,
5011                 PCI_SLOT(pcistr[ctr].pdev->devfn),
5012                 ha->irq);
5013
5014         error = request_irq(ha->irq, gdth_interrupt,
5015                                 IRQF_DISABLED|IRQF_SHARED, "gdth", ha);
5016         if (error) {
5017                 printk("GDT-PCI: Unable to allocate IRQ\n");
5018                 goto out_host_put;
5019         }
5020
5021         shp->unchecked_isa_dma = 0;
5022         shp->irq = ha->irq;
5023         shp->dma_channel = 0xff;
5024
5025         ha->hanum = gdth_ctr_count++;
5026         ha->shost = shp;
5027
5028         ha->pccb = &ha->cmdext;
5029         ha->ccb_phys = 0L;
5030
5031         error = -ENOMEM;
5032
5033         ha->pscratch = pci_alloc_consistent(ha->pdev, GDTH_SCRATCH,
5034                                                 &scratch_dma_handle);
5035         if (!ha->pscratch)
5036                 goto out_free_irq;
5037         ha->scratch_phys = scratch_dma_handle;
5038
5039         ha->pmsg = pci_alloc_consistent(ha->pdev, sizeof(gdth_msg_str),
5040                                         &scratch_dma_handle);
5041         if (!ha->pmsg)
5042                 goto out_free_pscratch;
5043         ha->msg_phys = scratch_dma_handle;
5044
5045 #ifdef INT_COAL
5046         ha->coal_stat = pci_alloc_consistent(ha->pdev,
5047                         sizeof(gdth_coal_status) * MAXOFFSETS,
5048                         &scratch_dma_handle);
5049         if (!ha->coal_stat)
5050                 goto out_free_pmsg;
5051         ha->coal_stat_phys = scratch_dma_handle;
5052 #endif
5053
5054         ha->scratch_busy = FALSE;
5055         ha->req_first = NULL;
5056         ha->tid_cnt = pcistr[ctr].pdev->device >= 0x200 ? MAXID : MAX_HDRIVES;
5057         if (max_ids > 0 && max_ids < ha->tid_cnt)
5058                 ha->tid_cnt = max_ids;
5059         for (i = 0; i < GDTH_MAXCMDS; ++i)
5060                 ha->cmd_tab[i].cmnd = UNUSED_CMND;
5061         ha->scan_mode = rescan ? 0x10 : 0;
5062
5063         error = -ENODEV;
5064         if (!gdth_search_drives(ha)) {
5065                 printk("GDT-PCI %d: Error during device scan\n", ha->hanum);
5066                 goto out_free_coal_stat;
5067         }
5068
5069         if (hdr_channel < 0 || hdr_channel > ha->bus_cnt)
5070                 hdr_channel = ha->bus_cnt;
5071         ha->virt_bus = hdr_channel;
5072
5073         /* 64-bit DMA only supported from FW >= x.43 */
5074         if (!(ha->cache_feat & ha->raw_feat & ha->screen_feat & GDT_64BIT) ||
5075             !ha->dma64_support) {
5076                 if (pci_set_dma_mask(pcistr[ctr].pdev, DMA_32BIT_MASK)) {
5077                         printk(KERN_WARNING "GDT-PCI %d: "
5078                                 "Unable to set 32-bit DMA\n", ha->hanum);
5079                                 goto out_free_coal_stat;
5080                 }
5081         } else {
5082                 shp->max_cmd_len = 16;
5083                 if (!pci_set_dma_mask(pcistr[ctr].pdev, DMA_64BIT_MASK)) {
5084                         printk("GDT-PCI %d: 64-bit DMA enabled\n", ha->hanum);
5085                 } else if (pci_set_dma_mask(pcistr[ctr].pdev, DMA_32BIT_MASK)) {
5086                         printk(KERN_WARNING "GDT-PCI %d: "
5087                                 "Unable to set 64/32-bit DMA\n", ha->hanum);
5088                         goto out_free_coal_stat;
5089                 }
5090         }
5091
5092         shp->max_id      = ha->tid_cnt;
5093         shp->max_lun     = MAXLUN;
5094         shp->max_channel = ha->bus_cnt;
5095
5096         spin_lock_init(&ha->smp_lock);
5097         gdth_enable_int(ha);
5098
5099         error = scsi_add_host(shp, &pcistr[ctr].pdev->dev);
5100         if (error)
5101                 goto out_free_coal_stat;
5102         list_add_tail(&ha->list, &gdth_instances);
5103         return 0;
5104
5105  out_free_coal_stat:
5106 #ifdef INT_COAL
5107         pci_free_consistent(ha->pdev, sizeof(gdth_coal_status) * MAXOFFSETS,
5108                                 ha->coal_stat, ha->coal_stat_phys);
5109  out_free_pmsg:
5110 #endif
5111         pci_free_consistent(ha->pdev, sizeof(gdth_msg_str),
5112                                 ha->pmsg, ha->msg_phys);
5113  out_free_pscratch:
5114         pci_free_consistent(ha->pdev, GDTH_SCRATCH,
5115                                 ha->pscratch, ha->scratch_phys);
5116  out_free_irq:
5117         free_irq(ha->irq, ha);
5118         gdth_ctr_count--;
5119  out_host_put:
5120         scsi_host_put(shp);
5121         return error;
5122 }
5123 #endif /* CONFIG_PCI */
5124
5125 static void gdth_remove_one(gdth_ha_str *ha)
5126 {
5127         struct Scsi_Host *shp = ha->shost;
5128
5129         TRACE2(("gdth_remove_one()\n"));
5130
5131         scsi_remove_host(shp);
5132
5133         if (ha->sdev) {
5134                 scsi_free_host_dev(ha->sdev);
5135                 ha->sdev = NULL;
5136         }
5137
5138         gdth_flush(ha);
5139
5140         if (shp->irq)
5141                 free_irq(shp->irq,ha);
5142
5143 #ifdef CONFIG_ISA
5144         if (shp->dma_channel != 0xff)
5145                 free_dma(shp->dma_channel);
5146 #endif
5147 #ifdef INT_COAL
5148         if (ha->coal_stat)
5149                 pci_free_consistent(ha->pdev, sizeof(gdth_coal_status) *
5150                         MAXOFFSETS, ha->coal_stat, ha->coal_stat_phys);
5151 #endif
5152         if (ha->pscratch)
5153                 pci_free_consistent(ha->pdev, GDTH_SCRATCH,
5154                         ha->pscratch, ha->scratch_phys);
5155         if (ha->pmsg)
5156                 pci_free_consistent(ha->pdev, sizeof(gdth_msg_str),
5157                         ha->pmsg, ha->msg_phys);
5158         if (ha->ccb_phys)
5159                 pci_unmap_single(ha->pdev,ha->ccb_phys,
5160                         sizeof(gdth_cmd_str),PCI_DMA_BIDIRECTIONAL);
5161
5162         scsi_host_put(shp);
5163 }
5164
5165 static int __init gdth_init(void)
5166 {
5167         if (disable) {
5168                 printk("GDT-HA: Controller driver disabled from"
5169                        " command line !\n");
5170                 return 0;
5171         }
5172
5173         printk("GDT-HA: Storage RAID Controller Driver. Version: %s\n",
5174                GDTH_VERSION_STR);
5175
5176         /* initializations */
5177         gdth_polling = TRUE;
5178         gdth_clear_events();
5179
5180         /* As default we do not probe for EISA or ISA controllers */
5181         if (probe_eisa_isa) {
5182                 /* scanning for controllers, at first: ISA controller */
5183 #ifdef CONFIG_ISA
5184                 ulong32 isa_bios;
5185                 for (isa_bios = 0xc8000UL; isa_bios <= 0xd8000UL;
5186                                 isa_bios += 0x8000UL)
5187                         gdth_isa_probe_one(isa_bios);
5188 #endif
5189 #ifdef CONFIG_EISA
5190                 {
5191                         ushort eisa_slot;
5192                         for (eisa_slot = 0x1000; eisa_slot <= 0x8000;
5193                                                  eisa_slot += 0x1000)
5194                                 gdth_eisa_probe_one(eisa_slot);
5195                 }
5196 #endif
5197         }
5198
5199 #ifdef CONFIG_PCI
5200         /* scanning for PCI controllers */
5201         {
5202                 gdth_pci_str pcistr[MAXHA];
5203                 int cnt,ctr;
5204
5205                 cnt = gdth_search_pci(pcistr);
5206                 printk("GDT-HA: Found %d PCI Storage RAID Controllers\n", cnt);
5207                 gdth_sort_pci(pcistr,cnt);
5208                 for (ctr = 0; ctr < cnt; ++ctr)
5209                         gdth_pci_probe_one(pcistr, ctr);
5210         }
5211 #endif /* CONFIG_PCI */
5212
5213         TRACE2(("gdth_detect() %d controller detected\n", gdth_ctr_count));
5214
5215         if (list_empty(&gdth_instances))
5216                 return -ENODEV;
5217
5218 #ifdef GDTH_STATISTICS
5219         TRACE2(("gdth_detect(): Initializing timer !\n"));
5220         init_timer(&gdth_timer);
5221         gdth_timer.expires = jiffies + HZ;
5222         gdth_timer.data = 0L;
5223         gdth_timer.function = gdth_timeout;
5224         add_timer(&gdth_timer);
5225 #endif
5226         major = register_chrdev(0,"gdth", &gdth_fops);
5227         notifier_disabled = 0;
5228         register_reboot_notifier(&gdth_notifier);
5229         gdth_polling = FALSE;
5230         return 0;
5231 }
5232
5233 static void __exit gdth_exit(void)
5234 {
5235         gdth_ha_str *ha;
5236
5237         list_for_each_entry(ha, &gdth_instances, list)
5238                 gdth_remove_one(ha);
5239
5240 #ifdef GDTH_STATISTICS
5241         del_timer(&gdth_timer);
5242 #endif
5243         unregister_chrdev(major,"gdth");
5244         unregister_reboot_notifier(&gdth_notifier);
5245 }
5246
5247 module_init(gdth_init);
5248 module_exit(gdth_exit);
5249
5250 #ifndef MODULE
5251 __setup("gdth=", option_setup);
5252 #endif