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Linux/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 '' in place of 'N'.
 79  * 
 80  * Default: "modprobe gdth disable=0 reserve_mode=1 reverse_scan=0
 81  *           max_ids=127 rescan=0 hdr_channel=0 shared_access=0
 82  *           probe_eisa_isa=0 force_dma32=0"
 83  * The other example: "modprobe gdth reserve_list=0,1,2,0,0,1,3,0 rescan=1".
 84  */
 85 
 86 /* The meaning of the Scsi_Pointer members in this driver is as follows:
 87  * ptr:                     Chaining
 88  * this_residual:           unused
 89  * buffer:                  unused
 90  * dma_handle:              unused
 91  * buffers_residual:        unused
 92  * Status:                  unused
 93  * Message:                 unused
 94  * have_data_in:            unused
 95  * sent_command:            unused
 96  * phase:                   unused
 97  */
 98 
 99 
100 /* interrupt coalescing */
101 /* #define INT_COAL */
102 
103 /* statistics */
104 #define GDTH_STATISTICS
105 
106 #include <linux/module.h>
107 
108 #include <linux/version.h>
109 #include <linux/kernel.h>
110 #include <linux/types.h>
111 #include <linux/pci.h>
112 #include <linux/string.h>
113 #include <linux/ctype.h>
114 #include <linux/ioport.h>
115 #include <linux/delay.h>
116 #include <linux/interrupt.h>
117 #include <linux/in.h>
118 #include <linux/proc_fs.h>
119 #include <linux/time.h>
120 #include <linux/timer.h>
121 #include <linux/dma-mapping.h>
122 #include <linux/list.h>
123 #include <linux/mutex.h>
124 #include <linux/slab.h>
125 
126 #ifdef GDTH_RTC
127 #include <linux/mc146818rtc.h>
128 #endif
129 #include <linux/reboot.h>
130 
131 #include <asm/dma.h>
132 #include <asm/io.h>
133 #include <asm/uaccess.h>
134 #include <linux/spinlock.h>
135 #include <linux/blkdev.h>
136 #include <linux/scatterlist.h>
137 
138 #include "scsi.h"
139 #include <scsi/scsi_host.h>
140 #include "gdth.h"
141 
142 static DEFINE_MUTEX(gdth_mutex);
143 static void gdth_delay(int milliseconds);
144 static void gdth_eval_mapping(u32 size, u32 *cyls, int *heads, int *secs);
145 static irqreturn_t gdth_interrupt(int irq, void *dev_id);
146 static irqreturn_t __gdth_interrupt(gdth_ha_str *ha,
147                                     int gdth_from_wait, int* pIndex);
148 static int gdth_sync_event(gdth_ha_str *ha, int service, u8 index,
149                                                                Scsi_Cmnd *scp);
150 static int gdth_async_event(gdth_ha_str *ha);
151 static void gdth_log_event(gdth_evt_data *dvr, char *buffer);
152 
153 static void gdth_putq(gdth_ha_str *ha, Scsi_Cmnd *scp, u8 priority);
154 static void gdth_next(gdth_ha_str *ha);
155 static int gdth_fill_raw_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, u8 b);
156 static int gdth_special_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp);
157 static gdth_evt_str *gdth_store_event(gdth_ha_str *ha, u16 source,
158                                       u16 idx, gdth_evt_data *evt);
159 static int gdth_read_event(gdth_ha_str *ha, int handle, gdth_evt_str *estr);
160 static void gdth_readapp_event(gdth_ha_str *ha, u8 application, 
161                                gdth_evt_str *estr);
162 static void gdth_clear_events(void);
163 
164 static void gdth_copy_internal_data(gdth_ha_str *ha, Scsi_Cmnd *scp,
165                                     char *buffer, u16 count);
166 static int gdth_internal_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp);
167 static int gdth_fill_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, u16 hdrive);
168 
169 static void gdth_enable_int(gdth_ha_str *ha);
170 static int gdth_test_busy(gdth_ha_str *ha);
171 static int gdth_get_cmd_index(gdth_ha_str *ha);
172 static void gdth_release_event(gdth_ha_str *ha);
173 static int gdth_wait(gdth_ha_str *ha, int index,u32 time);
174 static int gdth_internal_cmd(gdth_ha_str *ha, u8 service, u16 opcode,
175                                              u32 p1, u64 p2,u64 p3);
176 static int gdth_search_drives(gdth_ha_str *ha);
177 static int gdth_analyse_hdrive(gdth_ha_str *ha, u16 hdrive);
178 
179 static const char *gdth_ctr_name(gdth_ha_str *ha);
180 
181 static int gdth_open(struct inode *inode, struct file *filep);
182 static int gdth_close(struct inode *inode, struct file *filep);
183 static long gdth_unlocked_ioctl(struct file *filep, unsigned int cmd,
184                                 unsigned long arg);
185 
186 static void gdth_flush(gdth_ha_str *ha);
187 static int gdth_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd);
188 static int __gdth_queuecommand(gdth_ha_str *ha, struct scsi_cmnd *scp,
189                                 struct gdth_cmndinfo *cmndinfo);
190 static void gdth_scsi_done(struct scsi_cmnd *scp);
191 
192 #ifdef DEBUG_GDTH
193 static u8   DebugState = DEBUG_GDTH;
194 
195 #ifdef __SERIAL__
196 #define MAX_SERBUF 160
197 static void ser_init(void);
198 static void ser_puts(char *str);
199 static void ser_putc(char c);
200 static int  ser_printk(const char *fmt, ...);
201 static char strbuf[MAX_SERBUF+1];
202 #ifdef __COM2__
203 #define COM_BASE 0x2f8
204 #else
205 #define COM_BASE 0x3f8
206 #endif
207 static void ser_init()
208 {
209     unsigned port=COM_BASE;
210 
211     outb(0x80,port+3);
212     outb(0,port+1);
213     /* 19200 Baud, if 9600: outb(12,port) */
214     outb(6, port);
215     outb(3,port+3);
216     outb(0,port+1);
217     /*
218     ser_putc('I');
219     ser_putc(' ');
220     */
221 }
222 
223 static void ser_puts(char *str)
224 {
225     char *ptr;
226 
227     ser_init();
228     for (ptr=str;*ptr;++ptr)
229         ser_putc(*ptr);
230 }
231 
232 static void ser_putc(char c)
233 {
234     unsigned port=COM_BASE;
235 
236     while ((inb(port+5) & 0x20)==0);
237     outb(c,port);
238     if (c==0x0a)
239     {
240         while ((inb(port+5) & 0x20)==0);
241         outb(0x0d,port);
242     }
243 }
244 
245 static int ser_printk(const char *fmt, ...)
246 {
247     va_list args;
248     int i;
249 
250     va_start(args,fmt);
251     i = vsprintf(strbuf,fmt,args);
252     ser_puts(strbuf);
253     va_end(args);
254     return i;
255 }
256 
257 #define TRACE(a)    {if (DebugState==1) {ser_printk a;}}
258 #define TRACE2(a)   {if (DebugState==1 || DebugState==2) {ser_printk a;}}
259 #define TRACE3(a)   {if (DebugState!=0) {ser_printk a;}}
260 
261 #else /* !__SERIAL__ */
262 #define TRACE(a)    {if (DebugState==1) {printk a;}}
263 #define TRACE2(a)   {if (DebugState==1 || DebugState==2) {printk a;}}
264 #define TRACE3(a)   {if (DebugState!=0) {printk a;}}
265 #endif
266 
267 #else /* !DEBUG */
268 #define TRACE(a)
269 #define TRACE2(a)
270 #define TRACE3(a)
271 #endif
272 
273 #ifdef GDTH_STATISTICS
274 static u32 max_rq=0, max_index=0, max_sg=0;
275 #ifdef INT_COAL
276 static u32 max_int_coal=0;
277 #endif
278 static u32 act_ints=0, act_ios=0, act_stats=0, act_rq=0;
279 static struct timer_list gdth_timer;
280 #endif
281 
282 #define PTR2USHORT(a)   (u16)(unsigned long)(a)
283 #define GDTOFFSOF(a,b)  (size_t)&(((a*)0)->b)
284 #define INDEX_OK(i,t)   ((i)<ARRAY_SIZE(t))
285 
286 #define BUS_L2P(a,b)    ((b)>(a)->virt_bus ? (b-1):(b))
287 
288 #ifdef CONFIG_ISA
289 static u8   gdth_drq_tab[4] = {5,6,7,7};            /* DRQ table */
290 #endif
291 #if defined(CONFIG_EISA) || defined(CONFIG_ISA)
292 static u8   gdth_irq_tab[6] = {0,10,11,12,14,0};    /* IRQ table */
293 #endif
294 static u8   gdth_polling;                           /* polling if TRUE */
295 static int      gdth_ctr_count  = 0;                    /* controller count */
296 static LIST_HEAD(gdth_instances);                       /* controller list */
297 static u8   gdth_write_through = FALSE;             /* write through */
298 static gdth_evt_str ebuffer[MAX_EVENTS];                /* event buffer */
299 static int elastidx;
300 static int eoldidx;
301 static int major;
302 
303 #define DIN     1                               /* IN data direction */
304 #define DOU     2                               /* OUT data direction */
305 #define DNO     DIN                             /* no data transfer */
306 #define DUN     DIN                             /* unknown data direction */
307 static u8 gdth_direction_tab[0x100] = {
308     DNO,DNO,DIN,DIN,DOU,DIN,DIN,DOU,DIN,DUN,DOU,DOU,DUN,DUN,DUN,DIN,
309     DNO,DIN,DIN,DOU,DIN,DOU,DNO,DNO,DOU,DNO,DIN,DNO,DIN,DOU,DNO,DUN,
310     DIN,DUN,DIN,DUN,DOU,DIN,DUN,DUN,DIN,DIN,DOU,DNO,DUN,DIN,DOU,DOU,
311     DOU,DOU,DOU,DNO,DIN,DNO,DNO,DIN,DOU,DOU,DOU,DOU,DIN,DOU,DIN,DOU,
312     DOU,DOU,DIN,DIN,DIN,DNO,DUN,DNO,DNO,DNO,DUN,DNO,DOU,DIN,DUN,DUN,
313     DUN,DUN,DUN,DUN,DUN,DOU,DUN,DUN,DUN,DUN,DIN,DUN,DUN,DUN,DUN,DUN,
314     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
315     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
316     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DIN,DUN,DOU,DUN,DUN,DUN,DUN,DUN,
317     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DIN,DUN,
318     DUN,DUN,DUN,DUN,DUN,DNO,DNO,DUN,DIN,DNO,DOU,DUN,DNO,DUN,DOU,DOU,
319     DOU,DOU,DOU,DNO,DUN,DIN,DOU,DIN,DIN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
320     DUN,DUN,DOU,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
321     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
322     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DOU,DUN,DUN,DUN,DUN,DUN,
323     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN
324 };
325 
326 /* LILO and modprobe/insmod parameters */
327 /* IRQ list for GDT3000/3020 EISA controllers */
328 static int irq[MAXHA] __initdata = 
329 {0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
330  0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};
331 /* disable driver flag */
332 static int disable __initdata = 0;
333 /* reserve flag */
334 static int reserve_mode = 1;                  
335 /* reserve list */
336 static int reserve_list[MAX_RES_ARGS] = 
337 {0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
338  0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
339  0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};
340 /* scan order for PCI controllers */
341 static int reverse_scan = 0;
342 /* virtual channel for the host drives */
343 static int hdr_channel = 0;
344 /* max. IDs per channel */
345 static int max_ids = MAXID;
346 /* rescan all IDs */
347 static int rescan = 0;
348 /* shared access */
349 static int shared_access = 1;
350 /* enable support for EISA and ISA controllers */
351 static int probe_eisa_isa = 0;
352 /* 64 bit DMA mode, support for drives > 2 TB, if force_dma32 = 0 */
353 static int force_dma32 = 0;
354 
355 /* parameters for modprobe/insmod */
356 module_param_array(irq, int, NULL, 0);
357 module_param(disable, int, 0);
358 module_param(reserve_mode, int, 0);
359 module_param_array(reserve_list, int, NULL, 0);
360 module_param(reverse_scan, int, 0);
361 module_param(hdr_channel, int, 0);
362 module_param(max_ids, int, 0);
363 module_param(rescan, int, 0);
364 module_param(shared_access, int, 0);
365 module_param(probe_eisa_isa, int, 0);
366 module_param(force_dma32, int, 0);
367 MODULE_AUTHOR("Achim Leubner");
368 MODULE_LICENSE("GPL");
369 
370 /* ioctl interface */
371 static const struct file_operations gdth_fops = {
372     .unlocked_ioctl   = gdth_unlocked_ioctl,
373     .open    = gdth_open,
374     .release = gdth_close,
375     .llseek = noop_llseek,
376 };
377 
378 #include "gdth_proc.h"
379 #include "gdth_proc.c"
380 
381 static gdth_ha_str *gdth_find_ha(int hanum)
382 {
383         gdth_ha_str *ha;
384 
385         list_for_each_entry(ha, &gdth_instances, list)
386                 if (hanum == ha->hanum)
387                         return ha;
388 
389         return NULL;
390 }
391 
392 static struct gdth_cmndinfo *gdth_get_cmndinfo(gdth_ha_str *ha)
393 {
394         struct gdth_cmndinfo *priv = NULL;
395         unsigned long flags;
396         int i;
397 
398         spin_lock_irqsave(&ha->smp_lock, flags);
399 
400         for (i=0; i<GDTH_MAXCMDS; ++i) {
401                 if (ha->cmndinfo[i].index == 0) {
402                         priv = &ha->cmndinfo[i];
403                         memset(priv, 0, sizeof(*priv));
404                         priv->index = i+1;
405                         break;
406                 }
407         }
408 
409         spin_unlock_irqrestore(&ha->smp_lock, flags);
410 
411         return priv;
412 }
413 
414 static void gdth_put_cmndinfo(struct gdth_cmndinfo *priv)
415 {
416         BUG_ON(!priv);
417         priv->index = 0;
418 }
419 
420 static void gdth_delay(int milliseconds)
421 {
422     if (milliseconds == 0) {
423         udelay(1);
424     } else {
425         mdelay(milliseconds);
426     }
427 }
428 
429 static void gdth_scsi_done(struct scsi_cmnd *scp)
430 {
431         struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
432         int internal_command = cmndinfo->internal_command;
433 
434         TRACE2(("gdth_scsi_done()\n"));
435 
436         gdth_put_cmndinfo(cmndinfo);
437         scp->host_scribble = NULL;
438 
439         if (internal_command)
440                 complete((struct completion *)scp->request);
441         else
442                 scp->scsi_done(scp);
443 }
444 
445 int __gdth_execute(struct scsi_device *sdev, gdth_cmd_str *gdtcmd, char *cmnd,
446                    int timeout, u32 *info)
447 {
448     gdth_ha_str *ha = shost_priv(sdev->host);
449     Scsi_Cmnd *scp;
450     struct gdth_cmndinfo cmndinfo;
451     DECLARE_COMPLETION_ONSTACK(wait);
452     int rval;
453 
454     scp = kzalloc(sizeof(*scp), GFP_KERNEL);
455     if (!scp)
456         return -ENOMEM;
457 
458     scp->sense_buffer = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
459     if (!scp->sense_buffer) {
460         kfree(scp);
461         return -ENOMEM;
462     }
463 
464     scp->device = sdev;
465     memset(&cmndinfo, 0, sizeof(cmndinfo));
466 
467     /* use request field to save the ptr. to completion struct. */
468     scp->request = (struct request *)&wait;
469     scp->cmd_len = 12;
470     scp->cmnd = cmnd;
471     cmndinfo.priority = IOCTL_PRI;
472     cmndinfo.internal_cmd_str = gdtcmd;
473     cmndinfo.internal_command = 1;
474 
475     TRACE(("__gdth_execute() cmd 0x%x\n", scp->cmnd[0]));
476     __gdth_queuecommand(ha, scp, &cmndinfo);
477 
478     wait_for_completion(&wait);
479 
480     rval = cmndinfo.status;
481     if (info)
482         *info = cmndinfo.info;
483     kfree(scp->sense_buffer);
484     kfree(scp);
485     return rval;
486 }
487 
488 int gdth_execute(struct Scsi_Host *shost, gdth_cmd_str *gdtcmd, char *cmnd,
489                  int timeout, u32 *info)
490 {
491     struct scsi_device *sdev = scsi_get_host_dev(shost);
492     int rval = __gdth_execute(sdev, gdtcmd, cmnd, timeout, info);
493 
494     scsi_free_host_dev(sdev);
495     return rval;
496 }
497 
498 static void gdth_eval_mapping(u32 size, u32 *cyls, int *heads, int *secs)
499 {
500     *cyls = size /HEADS/SECS;
501     if (*cyls <= MAXCYLS) {
502         *heads = HEADS;
503         *secs = SECS;
504     } else {                                        /* too high for 64*32 */
505         *cyls = size /MEDHEADS/MEDSECS;
506         if (*cyls <= MAXCYLS) {
507             *heads = MEDHEADS;
508             *secs = MEDSECS;
509         } else {                                    /* too high for 127*63 */
510             *cyls = size /BIGHEADS/BIGSECS;
511             *heads = BIGHEADS;
512             *secs = BIGSECS;
513         }
514     }
515 }
516 
517 /* controller search and initialization functions */
518 #ifdef CONFIG_EISA
519 static int __init gdth_search_eisa(u16 eisa_adr)
520 {
521     u32 id;
522     
523     TRACE(("gdth_search_eisa() adr. %x\n",eisa_adr));
524     id = inl(eisa_adr+ID0REG);
525     if (id == GDT3A_ID || id == GDT3B_ID) {     /* GDT3000A or GDT3000B */
526         if ((inb(eisa_adr+EISAREG) & 8) == 0)   
527             return 0;                           /* not EISA configured */
528         return 1;
529     }
530     if (id == GDT3_ID)                          /* GDT3000 */
531         return 1;
532 
533     return 0;                                   
534 }
535 #endif /* CONFIG_EISA */
536 
537 #ifdef CONFIG_ISA
538 static int __init gdth_search_isa(u32 bios_adr)
539 {
540     void __iomem *addr;
541     u32 id;
542 
543     TRACE(("gdth_search_isa() bios adr. %x\n",bios_adr));
544     if ((addr = ioremap(bios_adr+BIOS_ID_OFFS, sizeof(u32))) != NULL) {
545         id = readl(addr);
546         iounmap(addr);
547         if (id == GDT2_ID)                          /* GDT2000 */
548             return 1;
549     }
550     return 0;
551 }
552 #endif /* CONFIG_ISA */
553 
554 #ifdef CONFIG_PCI
555 
556 static bool gdth_search_vortex(u16 device)
557 {
558         if (device <= PCI_DEVICE_ID_VORTEX_GDT6555)
559                 return true;
560         if (device >= PCI_DEVICE_ID_VORTEX_GDT6x17RP &&
561             device <= PCI_DEVICE_ID_VORTEX_GDTMAXRP)
562                 return true;
563         if (device == PCI_DEVICE_ID_VORTEX_GDTNEWRX ||
564             device == PCI_DEVICE_ID_VORTEX_GDTNEWRX2)
565                 return true;
566         return false;
567 }
568 
569 static int gdth_pci_probe_one(gdth_pci_str *pcistr, gdth_ha_str **ha_out);
570 static int gdth_pci_init_one(struct pci_dev *pdev,
571                              const struct pci_device_id *ent);
572 static void gdth_pci_remove_one(struct pci_dev *pdev);
573 static void gdth_remove_one(gdth_ha_str *ha);
574 
575 /* Vortex only makes RAID controllers.
576  * We do not really want to specify all 550 ids here, so wildcard match.
577  */
578 static const struct pci_device_id gdthtable[] = {
579         { PCI_VDEVICE(VORTEX, PCI_ANY_ID) },
580         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_SRC) },
581         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_SRC_XSCALE) },
582         { }     /* terminate list */
583 };
584 MODULE_DEVICE_TABLE(pci, gdthtable);
585 
586 static struct pci_driver gdth_pci_driver = {
587         .name           = "gdth",
588         .id_table       = gdthtable,
589         .probe          = gdth_pci_init_one,
590         .remove         = gdth_pci_remove_one,
591 };
592 
593 static void gdth_pci_remove_one(struct pci_dev *pdev)
594 {
595         gdth_ha_str *ha = pci_get_drvdata(pdev);
596 
597         list_del(&ha->list);
598         gdth_remove_one(ha);
599 
600         pci_disable_device(pdev);
601 }
602 
603 static int gdth_pci_init_one(struct pci_dev *pdev,
604                              const struct pci_device_id *ent)
605 {
606         u16 vendor = pdev->vendor;
607         u16 device = pdev->device;
608         unsigned long base0, base1, base2;
609         int rc;
610         gdth_pci_str gdth_pcistr;
611         gdth_ha_str *ha = NULL;
612     
613         TRACE(("gdth_search_dev() cnt %d vendor %x device %x\n",
614                gdth_ctr_count, vendor, device));
615 
616         memset(&gdth_pcistr, 0, sizeof(gdth_pcistr));
617 
618         if (vendor == PCI_VENDOR_ID_VORTEX && !gdth_search_vortex(device))
619                 return -ENODEV;
620 
621         rc = pci_enable_device(pdev);
622         if (rc)
623                 return rc;
624 
625         if (gdth_ctr_count >= MAXHA)
626                 return -EBUSY;
627 
628         /* GDT PCI controller found, resources are already in pdev */
629         gdth_pcistr.pdev = pdev;
630         base0 = pci_resource_flags(pdev, 0);
631         base1 = pci_resource_flags(pdev, 1);
632         base2 = pci_resource_flags(pdev, 2);
633         if (device <= PCI_DEVICE_ID_VORTEX_GDT6000B ||   /* GDT6000/B */
634             device >= PCI_DEVICE_ID_VORTEX_GDT6x17RP) {  /* MPR */
635             if (!(base0 & IORESOURCE_MEM)) 
636                 return -ENODEV;
637             gdth_pcistr.dpmem = pci_resource_start(pdev, 0);
638         } else {                                  /* GDT6110, GDT6120, .. */
639             if (!(base0 & IORESOURCE_MEM) ||
640                 !(base2 & IORESOURCE_MEM) ||
641                 !(base1 & IORESOURCE_IO)) 
642                 return -ENODEV;
643             gdth_pcistr.dpmem = pci_resource_start(pdev, 2);
644             gdth_pcistr.io    = pci_resource_start(pdev, 1);
645         }
646         TRACE2(("Controller found at %d/%d, irq %d, dpmem 0x%lx\n",
647                 gdth_pcistr.pdev->bus->number,
648                 PCI_SLOT(gdth_pcistr.pdev->devfn),
649                 gdth_pcistr.irq,
650                 gdth_pcistr.dpmem));
651 
652         rc = gdth_pci_probe_one(&gdth_pcistr, &ha);
653         if (rc)
654                 return rc;
655 
656         return 0;
657 }
658 #endif /* CONFIG_PCI */
659 
660 #ifdef CONFIG_EISA
661 static int __init gdth_init_eisa(u16 eisa_adr,gdth_ha_str *ha)
662 {
663     u32 retries,id;
664     u8 prot_ver,eisacf,i,irq_found;
665 
666     TRACE(("gdth_init_eisa() adr. %x\n",eisa_adr));
667     
668     /* disable board interrupts, deinitialize services */
669     outb(0xff,eisa_adr+EDOORREG);
670     outb(0x00,eisa_adr+EDENABREG);
671     outb(0x00,eisa_adr+EINTENABREG);
672     
673     outb(0xff,eisa_adr+LDOORREG);
674     retries = INIT_RETRIES;
675     gdth_delay(20);
676     while (inb(eisa_adr+EDOORREG) != 0xff) {
677         if (--retries == 0) {
678             printk("GDT-EISA: Initialization error (DEINIT failed)\n");
679             return 0;
680         }
681         gdth_delay(1);
682         TRACE2(("wait for DEINIT: retries=%d\n",retries));
683     }
684     prot_ver = inb(eisa_adr+MAILBOXREG);
685     outb(0xff,eisa_adr+EDOORREG);
686     if (prot_ver != PROTOCOL_VERSION) {
687         printk("GDT-EISA: Illegal protocol version\n");
688         return 0;
689     }
690     ha->bmic = eisa_adr;
691     ha->brd_phys = (u32)eisa_adr >> 12;
692 
693     outl(0,eisa_adr+MAILBOXREG);
694     outl(0,eisa_adr+MAILBOXREG+4);
695     outl(0,eisa_adr+MAILBOXREG+8);
696     outl(0,eisa_adr+MAILBOXREG+12);
697 
698     /* detect IRQ */ 
699     if ((id = inl(eisa_adr+ID0REG)) == GDT3_ID) {
700         ha->oem_id = OEM_ID_ICP;
701         ha->type = GDT_EISA;
702         ha->stype = id;
703         outl(1,eisa_adr+MAILBOXREG+8);
704         outb(0xfe,eisa_adr+LDOORREG);
705         retries = INIT_RETRIES;
706         gdth_delay(20);
707         while (inb(eisa_adr+EDOORREG) != 0xfe) {
708             if (--retries == 0) {
709                 printk("GDT-EISA: Initialization error (get IRQ failed)\n");
710                 return 0;
711             }
712             gdth_delay(1);
713         }
714         ha->irq = inb(eisa_adr+MAILBOXREG);
715         outb(0xff,eisa_adr+EDOORREG);
716         TRACE2(("GDT3000/3020: IRQ=%d\n",ha->irq));
717         /* check the result */
718         if (ha->irq == 0) {
719                 TRACE2(("Unknown IRQ, use IRQ table from cmd line !\n"));
720                 for (i = 0, irq_found = FALSE; 
721                      i < MAXHA && irq[i] != 0xff; ++i) {
722                 if (irq[i]==10 || irq[i]==11 || irq[i]==12 || irq[i]==14) {
723                     irq_found = TRUE;
724                     break;
725                 }
726                 }
727             if (irq_found) {
728                 ha->irq = irq[i];
729                 irq[i] = 0;
730                 printk("GDT-EISA: Can not detect controller IRQ,\n");
731                 printk("Use IRQ setting from command line (IRQ = %d)\n",
732                        ha->irq);
733             } else {
734                 printk("GDT-EISA: Initialization error (unknown IRQ), Enable\n");
735                 printk("the controller BIOS or use command line parameters\n");
736                 return 0;
737             }
738         }
739     } else {
740         eisacf = inb(eisa_adr+EISAREG) & 7;
741         if (eisacf > 4)                         /* level triggered */
742             eisacf -= 4;
743         ha->irq = gdth_irq_tab[eisacf];
744         ha->oem_id = OEM_ID_ICP;
745         ha->type = GDT_EISA;
746         ha->stype = id;
747     }
748 
749     ha->dma64_support = 0;
750     return 1;
751 }
752 #endif /* CONFIG_EISA */
753 
754 #ifdef CONFIG_ISA
755 static int __init gdth_init_isa(u32 bios_adr,gdth_ha_str *ha)
756 {
757     register gdt2_dpram_str __iomem *dp2_ptr;
758     int i;
759     u8 irq_drq,prot_ver;
760     u32 retries;
761 
762     TRACE(("gdth_init_isa() bios adr. %x\n",bios_adr));
763 
764     ha->brd = ioremap(bios_adr, sizeof(gdt2_dpram_str));
765     if (ha->brd == NULL) {
766         printk("GDT-ISA: Initialization error (DPMEM remap error)\n");
767         return 0;
768     }
769     dp2_ptr = ha->brd;
770     writeb(1, &dp2_ptr->io.memlock); /* switch off write protection */
771     /* reset interface area */
772     memset_io(&dp2_ptr->u, 0, sizeof(dp2_ptr->u));
773     if (readl(&dp2_ptr->u) != 0) {
774         printk("GDT-ISA: Initialization error (DPMEM write error)\n");
775         iounmap(ha->brd);
776         return 0;
777     }
778 
779     /* disable board interrupts, read DRQ and IRQ */
780     writeb(0xff, &dp2_ptr->io.irqdel);
781     writeb(0x00, &dp2_ptr->io.irqen);
782     writeb(0x00, &dp2_ptr->u.ic.S_Status);
783     writeb(0x00, &dp2_ptr->u.ic.Cmd_Index);
784 
785     irq_drq = readb(&dp2_ptr->io.rq);
786     for (i=0; i<3; ++i) {
787         if ((irq_drq & 1)==0)
788             break;
789         irq_drq >>= 1;
790     }
791     ha->drq = gdth_drq_tab[i];
792 
793     irq_drq = readb(&dp2_ptr->io.rq) >> 3;
794     for (i=1; i<5; ++i) {
795         if ((irq_drq & 1)==0)
796             break;
797         irq_drq >>= 1;
798     }
799     ha->irq = gdth_irq_tab[i];
800 
801     /* deinitialize services */
802     writel(bios_adr, &dp2_ptr->u.ic.S_Info[0]);
803     writeb(0xff, &dp2_ptr->u.ic.S_Cmd_Indx);
804     writeb(0, &dp2_ptr->io.event);
805     retries = INIT_RETRIES;
806     gdth_delay(20);
807     while (readb(&dp2_ptr->u.ic.S_Status) != 0xff) {
808         if (--retries == 0) {
809             printk("GDT-ISA: Initialization error (DEINIT failed)\n");
810             iounmap(ha->brd);
811             return 0;
812         }
813         gdth_delay(1);
814     }
815     prot_ver = (u8)readl(&dp2_ptr->u.ic.S_Info[0]);
816     writeb(0, &dp2_ptr->u.ic.Status);
817     writeb(0xff, &dp2_ptr->io.irqdel);
818     if (prot_ver != PROTOCOL_VERSION) {
819         printk("GDT-ISA: Illegal protocol version\n");
820         iounmap(ha->brd);
821         return 0;
822     }
823 
824     ha->oem_id = OEM_ID_ICP;
825     ha->type = GDT_ISA;
826     ha->ic_all_size = sizeof(dp2_ptr->u);
827     ha->stype= GDT2_ID;
828     ha->brd_phys = bios_adr >> 4;
829 
830     /* special request to controller BIOS */
831     writel(0x00, &dp2_ptr->u.ic.S_Info[0]);
832     writel(0x00, &dp2_ptr->u.ic.S_Info[1]);
833     writel(0x01, &dp2_ptr->u.ic.S_Info[2]);
834     writel(0x00, &dp2_ptr->u.ic.S_Info[3]);
835     writeb(0xfe, &dp2_ptr->u.ic.S_Cmd_Indx);
836     writeb(0, &dp2_ptr->io.event);
837     retries = INIT_RETRIES;
838     gdth_delay(20);
839     while (readb(&dp2_ptr->u.ic.S_Status) != 0xfe) {
840         if (--retries == 0) {
841             printk("GDT-ISA: Initialization error\n");
842             iounmap(ha->brd);
843             return 0;
844         }
845         gdth_delay(1);
846     }
847     writeb(0, &dp2_ptr->u.ic.Status);
848     writeb(0xff, &dp2_ptr->io.irqdel);
849 
850     ha->dma64_support = 0;
851     return 1;
852 }
853 #endif /* CONFIG_ISA */
854 
855 #ifdef CONFIG_PCI
856 static int gdth_init_pci(struct pci_dev *pdev, gdth_pci_str *pcistr,
857                          gdth_ha_str *ha)
858 {
859     register gdt6_dpram_str __iomem *dp6_ptr;
860     register gdt6c_dpram_str __iomem *dp6c_ptr;
861     register gdt6m_dpram_str __iomem *dp6m_ptr;
862     u32 retries;
863     u8 prot_ver;
864     u16 command;
865     int i, found = FALSE;
866 
867     TRACE(("gdth_init_pci()\n"));
868 
869     if (pdev->vendor == PCI_VENDOR_ID_INTEL)
870         ha->oem_id = OEM_ID_INTEL;
871     else
872         ha->oem_id = OEM_ID_ICP;
873     ha->brd_phys = (pdev->bus->number << 8) | (pdev->devfn & 0xf8);
874     ha->stype = (u32)pdev->device;
875     ha->irq = pdev->irq;
876     ha->pdev = pdev;
877     
878     if (ha->pdev->device <= PCI_DEVICE_ID_VORTEX_GDT6000B) {  /* GDT6000/B */
879         TRACE2(("init_pci() dpmem %lx irq %d\n",pcistr->dpmem,ha->irq));
880         ha->brd = ioremap(pcistr->dpmem, sizeof(gdt6_dpram_str));
881         if (ha->brd == NULL) {
882             printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
883             return 0;
884         }
885         /* check and reset interface area */
886         dp6_ptr = ha->brd;
887         writel(DPMEM_MAGIC, &dp6_ptr->u);
888         if (readl(&dp6_ptr->u) != DPMEM_MAGIC) {
889             printk("GDT-PCI: Cannot access DPMEM at 0x%lx (shadowed?)\n", 
890                    pcistr->dpmem);
891             found = FALSE;
892             for (i = 0xC8000; i < 0xE8000; i += 0x4000) {
893                 iounmap(ha->brd);
894                 ha->brd = ioremap(i, sizeof(u16)); 
895                 if (ha->brd == NULL) {
896                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
897                     return 0;
898                 }
899                 if (readw(ha->brd) != 0xffff) {
900                     TRACE2(("init_pci_old() address 0x%x busy\n", i));
901                     continue;
902                 }
903                 iounmap(ha->brd);
904                 pci_write_config_dword(pdev, PCI_BASE_ADDRESS_0, i);
905                 ha->brd = ioremap(i, sizeof(gdt6_dpram_str)); 
906                 if (ha->brd == NULL) {
907                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
908                     return 0;
909                 }
910                 dp6_ptr = ha->brd;
911                 writel(DPMEM_MAGIC, &dp6_ptr->u);
912                 if (readl(&dp6_ptr->u) == DPMEM_MAGIC) {
913                     printk("GDT-PCI: Use free address at 0x%x\n", i);
914                     found = TRUE;
915                     break;
916                 }
917             }   
918             if (!found) {
919                 printk("GDT-PCI: No free address found!\n");
920                 iounmap(ha->brd);
921                 return 0;
922             }
923         }
924         memset_io(&dp6_ptr->u, 0, sizeof(dp6_ptr->u));
925         if (readl(&dp6_ptr->u) != 0) {
926             printk("GDT-PCI: Initialization error (DPMEM write error)\n");
927             iounmap(ha->brd);
928             return 0;
929         }
930         
931         /* disable board interrupts, deinit services */
932         writeb(0xff, &dp6_ptr->io.irqdel);
933         writeb(0x00, &dp6_ptr->io.irqen);
934         writeb(0x00, &dp6_ptr->u.ic.S_Status);
935         writeb(0x00, &dp6_ptr->u.ic.Cmd_Index);
936 
937         writel(pcistr->dpmem, &dp6_ptr->u.ic.S_Info[0]);
938         writeb(0xff, &dp6_ptr->u.ic.S_Cmd_Indx);
939         writeb(0, &dp6_ptr->io.event);
940         retries = INIT_RETRIES;
941         gdth_delay(20);
942         while (readb(&dp6_ptr->u.ic.S_Status) != 0xff) {
943             if (--retries == 0) {
944                 printk("GDT-PCI: Initialization error (DEINIT failed)\n");
945                 iounmap(ha->brd);
946                 return 0;
947             }
948             gdth_delay(1);
949         }
950         prot_ver = (u8)readl(&dp6_ptr->u.ic.S_Info[0]);
951         writeb(0, &dp6_ptr->u.ic.S_Status);
952         writeb(0xff, &dp6_ptr->io.irqdel);
953         if (prot_ver != PROTOCOL_VERSION) {
954             printk("GDT-PCI: Illegal protocol version\n");
955             iounmap(ha->brd);
956             return 0;
957         }
958 
959         ha->type = GDT_PCI;
960         ha->ic_all_size = sizeof(dp6_ptr->u);
961         
962         /* special command to controller BIOS */
963         writel(0x00, &dp6_ptr->u.ic.S_Info[0]);
964         writel(0x00, &dp6_ptr->u.ic.S_Info[1]);
965         writel(0x00, &dp6_ptr->u.ic.S_Info[2]);
966         writel(0x00, &dp6_ptr->u.ic.S_Info[3]);
967         writeb(0xfe, &dp6_ptr->u.ic.S_Cmd_Indx);
968         writeb(0, &dp6_ptr->io.event);
969         retries = INIT_RETRIES;
970         gdth_delay(20);
971         while (readb(&dp6_ptr->u.ic.S_Status) != 0xfe) {
972             if (--retries == 0) {
973                 printk("GDT-PCI: Initialization error\n");
974                 iounmap(ha->brd);
975                 return 0;
976             }
977             gdth_delay(1);
978         }
979         writeb(0, &dp6_ptr->u.ic.S_Status);
980         writeb(0xff, &dp6_ptr->io.irqdel);
981 
982         ha->dma64_support = 0;
983 
984     } else if (ha->pdev->device <= PCI_DEVICE_ID_VORTEX_GDT6555) { /* GDT6110, ... */
985         ha->plx = (gdt6c_plx_regs *)pcistr->io;
986         TRACE2(("init_pci_new() dpmem %lx irq %d\n",
987             pcistr->dpmem,ha->irq));
988         ha->brd = ioremap(pcistr->dpmem, sizeof(gdt6c_dpram_str));
989         if (ha->brd == NULL) {
990             printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
991             iounmap(ha->brd);
992             return 0;
993         }
994         /* check and reset interface area */
995         dp6c_ptr = ha->brd;
996         writel(DPMEM_MAGIC, &dp6c_ptr->u);
997         if (readl(&dp6c_ptr->u) != DPMEM_MAGIC) {
998             printk("GDT-PCI: Cannot access DPMEM at 0x%lx (shadowed?)\n", 
999                    pcistr->dpmem);
1000             found = FALSE;
1001             for (i = 0xC8000; i < 0xE8000; i += 0x4000) {
1002                 iounmap(ha->brd);
1003                 ha->brd = ioremap(i, sizeof(u16)); 
1004                 if (ha->brd == NULL) {
1005                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1006                     return 0;
1007                 }
1008                 if (readw(ha->brd) != 0xffff) {
1009                     TRACE2(("init_pci_plx() address 0x%x busy\n", i));
1010                     continue;
1011                 }
1012                 iounmap(ha->brd);
1013                 pci_write_config_dword(pdev, PCI_BASE_ADDRESS_2, i);
1014                 ha->brd = ioremap(i, sizeof(gdt6c_dpram_str)); 
1015                 if (ha->brd == NULL) {
1016                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1017                     return 0;
1018                 }
1019                 dp6c_ptr = ha->brd;
1020                 writel(DPMEM_MAGIC, &dp6c_ptr->u);
1021                 if (readl(&dp6c_ptr->u) == DPMEM_MAGIC) {
1022                     printk("GDT-PCI: Use free address at 0x%x\n", i);
1023                     found = TRUE;
1024                     break;
1025                 }
1026             }   
1027             if (!found) {
1028                 printk("GDT-PCI: No free address found!\n");
1029                 iounmap(ha->brd);
1030                 return 0;
1031             }
1032         }
1033         memset_io(&dp6c_ptr->u, 0, sizeof(dp6c_ptr->u));
1034         if (readl(&dp6c_ptr->u) != 0) {
1035             printk("GDT-PCI: Initialization error (DPMEM write error)\n");
1036             iounmap(ha->brd);
1037             return 0;
1038         }
1039         
1040         /* disable board interrupts, deinit services */
1041         outb(0x00,PTR2USHORT(&ha->plx->control1));
1042         outb(0xff,PTR2USHORT(&ha->plx->edoor_reg));
1043         
1044         writeb(0x00, &dp6c_ptr->u.ic.S_Status);
1045         writeb(0x00, &dp6c_ptr->u.ic.Cmd_Index);
1046 
1047         writel(pcistr->dpmem, &dp6c_ptr->u.ic.S_Info[0]);
1048         writeb(0xff, &dp6c_ptr->u.ic.S_Cmd_Indx);
1049 
1050         outb(1,PTR2USHORT(&ha->plx->ldoor_reg));
1051 
1052         retries = INIT_RETRIES;
1053         gdth_delay(20);
1054         while (readb(&dp6c_ptr->u.ic.S_Status) != 0xff) {
1055             if (--retries == 0) {
1056                 printk("GDT-PCI: Initialization error (DEINIT failed)\n");
1057                 iounmap(ha->brd);
1058                 return 0;
1059             }
1060             gdth_delay(1);
1061         }
1062         prot_ver = (u8)readl(&dp6c_ptr->u.ic.S_Info[0]);
1063         writeb(0, &dp6c_ptr->u.ic.Status);
1064         if (prot_ver != PROTOCOL_VERSION) {
1065             printk("GDT-PCI: Illegal protocol version\n");
1066             iounmap(ha->brd);
1067             return 0;
1068         }
1069 
1070         ha->type = GDT_PCINEW;
1071         ha->ic_all_size = sizeof(dp6c_ptr->u);
1072 
1073         /* special command to controller BIOS */
1074         writel(0x00, &dp6c_ptr->u.ic.S_Info[0]);
1075         writel(0x00, &dp6c_ptr->u.ic.S_Info[1]);
1076         writel(0x00, &dp6c_ptr->u.ic.S_Info[2]);
1077         writel(0x00, &dp6c_ptr->u.ic.S_Info[3]);
1078         writeb(0xfe, &dp6c_ptr->u.ic.S_Cmd_Indx);
1079         
1080         outb(1,PTR2USHORT(&ha->plx->ldoor_reg));
1081 
1082         retries = INIT_RETRIES;
1083         gdth_delay(20);
1084         while (readb(&dp6c_ptr->u.ic.S_Status) != 0xfe) {
1085             if (--retries == 0) {
1086                 printk("GDT-PCI: Initialization error\n");
1087                 iounmap(ha->brd);
1088                 return 0;
1089             }
1090             gdth_delay(1);
1091         }
1092         writeb(0, &dp6c_ptr->u.ic.S_Status);
1093 
1094         ha->dma64_support = 0;
1095 
1096     } else {                                            /* MPR */
1097         TRACE2(("init_pci_mpr() dpmem %lx irq %d\n",pcistr->dpmem,ha->irq));
1098         ha->brd = ioremap(pcistr->dpmem, sizeof(gdt6m_dpram_str));
1099         if (ha->brd == NULL) {
1100             printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1101             return 0;
1102         }
1103 
1104         /* manipulate config. space to enable DPMEM, start RP controller */
1105         pci_read_config_word(pdev, PCI_COMMAND, &command);
1106         command |= 6;
1107         pci_write_config_word(pdev, PCI_COMMAND, command);
1108         gdth_delay(1);
1109 
1110         dp6m_ptr = ha->brd;
1111 
1112         /* Ensure that it is safe to access the non HW portions of DPMEM.
1113          * Aditional check needed for Xscale based RAID controllers */
1114         while( ((int)readb(&dp6m_ptr->i960r.sema0_reg) ) & 3 )
1115             gdth_delay(1);
1116         
1117         /* check and reset interface area */
1118         writel(DPMEM_MAGIC, &dp6m_ptr->u);
1119         if (readl(&dp6m_ptr->u) != DPMEM_MAGIC) {
1120             printk("GDT-PCI: Cannot access DPMEM at 0x%lx (shadowed?)\n", 
1121                    pcistr->dpmem);
1122             found = FALSE;
1123             for (i = 0xC8000; i < 0xE8000; i += 0x4000) {
1124                 iounmap(ha->brd);
1125                 ha->brd = ioremap(i, sizeof(u16)); 
1126                 if (ha->brd == NULL) {
1127                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1128                     return 0;
1129                 }
1130                 if (readw(ha->brd) != 0xffff) {
1131                     TRACE2(("init_pci_mpr() address 0x%x busy\n", i));
1132                     continue;
1133                 }
1134                 iounmap(ha->brd);
1135                 pci_write_config_dword(pdev, PCI_BASE_ADDRESS_0, i);
1136                 ha->brd = ioremap(i, sizeof(gdt6m_dpram_str)); 
1137                 if (ha->brd == NULL) {
1138                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1139                     return 0;
1140                 }
1141                 dp6m_ptr = ha->brd;
1142                 writel(DPMEM_MAGIC, &dp6m_ptr->u);
1143                 if (readl(&dp6m_ptr->u) == DPMEM_MAGIC) {
1144                     printk("GDT-PCI: Use free address at 0x%x\n", i);
1145                     found = TRUE;
1146                     break;
1147                 }
1148             }   
1149             if (!found) {
1150                 printk("GDT-PCI: No free address found!\n");
1151                 iounmap(ha->brd);
1152                 return 0;
1153             }
1154         }
1155         memset_io(&dp6m_ptr->u, 0, sizeof(dp6m_ptr->u));
1156         
1157         /* disable board interrupts, deinit services */
1158         writeb(readb(&dp6m_ptr->i960r.edoor_en_reg) | 4,
1159                     &dp6m_ptr->i960r.edoor_en_reg);
1160         writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
1161         writeb(0x00, &dp6m_ptr->u.ic.S_Status);
1162         writeb(0x00, &dp6m_ptr->u.ic.Cmd_Index);
1163 
1164         writel(pcistr->dpmem, &dp6m_ptr->u.ic.S_Info[0]);
1165         writeb(0xff, &dp6m_ptr->u.ic.S_Cmd_Indx);
1166         writeb(1, &dp6m_ptr->i960r.ldoor_reg);
1167         retries = INIT_RETRIES;
1168         gdth_delay(20);
1169         while (readb(&dp6m_ptr->u.ic.S_Status) != 0xff) {
1170             if (--retries == 0) {
1171                 printk("GDT-PCI: Initialization error (DEINIT failed)\n");
1172                 iounmap(ha->brd);
1173                 return 0;
1174             }
1175             gdth_delay(1);
1176         }
1177         prot_ver = (u8)readl(&dp6m_ptr->u.ic.S_Info[0]);
1178         writeb(0, &dp6m_ptr->u.ic.S_Status);
1179         if (prot_ver != PROTOCOL_VERSION) {
1180             printk("GDT-PCI: Illegal protocol version\n");
1181             iounmap(ha->brd);
1182             return 0;
1183         }
1184 
1185         ha->type = GDT_PCIMPR;
1186         ha->ic_all_size = sizeof(dp6m_ptr->u);
1187         
1188         /* special command to controller BIOS */
1189         writel(0x00, &dp6m_ptr->u.ic.S_Info[0]);
1190         writel(0x00, &dp6m_ptr->u.ic.S_Info[1]);
1191         writel(0x00, &dp6m_ptr->u.ic.S_Info[2]);
1192         writel(0x00, &dp6m_ptr->u.ic.S_Info[3]);
1193         writeb(0xfe, &dp6m_ptr->u.ic.S_Cmd_Indx);
1194         writeb(1, &dp6m_ptr->i960r.ldoor_reg);
1195         retries = INIT_RETRIES;
1196         gdth_delay(20);
1197         while (readb(&dp6m_ptr->u.ic.S_Status) != 0xfe) {
1198             if (--retries == 0) {
1199                 printk("GDT-PCI: Initialization error\n");
1200                 iounmap(ha->brd);
1201                 return 0;
1202             }
1203             gdth_delay(1);
1204         }
1205         writeb(0, &dp6m_ptr->u.ic.S_Status);
1206 
1207         /* read FW version to detect 64-bit DMA support */
1208         writeb(0xfd, &dp6m_ptr->u.ic.S_Cmd_Indx);
1209         writeb(1, &dp6m_ptr->i960r.ldoor_reg);
1210         retries = INIT_RETRIES;
1211         gdth_delay(20);
1212         while (readb(&dp6m_ptr->u.ic.S_Status) != 0xfd) {
1213             if (--retries == 0) {
1214                 printk("GDT-PCI: Initialization error (DEINIT failed)\n");
1215                 iounmap(ha->brd);
1216                 return 0;
1217             }
1218             gdth_delay(1);
1219         }
1220         prot_ver = (u8)(readl(&dp6m_ptr->u.ic.S_Info[0]) >> 16);
1221         writeb(0, &dp6m_ptr->u.ic.S_Status);
1222         if (prot_ver < 0x2b)      /* FW < x.43: no 64-bit DMA support */
1223             ha->dma64_support = 0;
1224         else 
1225             ha->dma64_support = 1;
1226     }
1227 
1228     return 1;
1229 }
1230 #endif /* CONFIG_PCI */
1231 
1232 /* controller protocol functions */
1233 
1234 static void gdth_enable_int(gdth_ha_str *ha)
1235 {
1236     unsigned long flags;
1237     gdt2_dpram_str __iomem *dp2_ptr;
1238     gdt6_dpram_str __iomem *dp6_ptr;
1239     gdt6m_dpram_str __iomem *dp6m_ptr;
1240 
1241     TRACE(("gdth_enable_int() hanum %d\n",ha->hanum));
1242     spin_lock_irqsave(&ha->smp_lock, flags);
1243 
1244     if (ha->type == GDT_EISA) {
1245         outb(0xff, ha->bmic + EDOORREG);
1246         outb(0xff, ha->bmic + EDENABREG);
1247         outb(0x01, ha->bmic + EINTENABREG);
1248     } else if (ha->type == GDT_ISA) {
1249         dp2_ptr = ha->brd;
1250         writeb(1, &dp2_ptr->io.irqdel);
1251         writeb(0, &dp2_ptr->u.ic.Cmd_Index);
1252         writeb(1, &dp2_ptr->io.irqen);
1253     } else if (ha->type == GDT_PCI) {
1254         dp6_ptr = ha->brd;
1255         writeb(1, &dp6_ptr->io.irqdel);
1256         writeb(0, &dp6_ptr->u.ic.Cmd_Index);
1257         writeb(1, &dp6_ptr->io.irqen);
1258     } else if (ha->type == GDT_PCINEW) {
1259         outb(0xff, PTR2USHORT(&ha->plx->edoor_reg));
1260         outb(0x03, PTR2USHORT(&ha->plx->control1));
1261     } else if (ha->type == GDT_PCIMPR) {
1262         dp6m_ptr = ha->brd;
1263         writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
1264         writeb(readb(&dp6m_ptr->i960r.edoor_en_reg) & ~4,
1265                     &dp6m_ptr->i960r.edoor_en_reg);
1266     }
1267     spin_unlock_irqrestore(&ha->smp_lock, flags);
1268 }
1269 
1270 /* return IStatus if interrupt was from this card else 0 */
1271 static u8 gdth_get_status(gdth_ha_str *ha)
1272 {
1273     u8 IStatus = 0;
1274 
1275     TRACE(("gdth_get_status() irq %d ctr_count %d\n", ha->irq, gdth_ctr_count));
1276 
1277         if (ha->type == GDT_EISA)
1278             IStatus = inb((u16)ha->bmic + EDOORREG);
1279         else if (ha->type == GDT_ISA)
1280             IStatus =
1281                 readb(&((gdt2_dpram_str __iomem *)ha->brd)->u.ic.Cmd_Index);
1282         else if (ha->type == GDT_PCI)
1283             IStatus =
1284                 readb(&((gdt6_dpram_str __iomem *)ha->brd)->u.ic.Cmd_Index);
1285         else if (ha->type == GDT_PCINEW) 
1286             IStatus = inb(PTR2USHORT(&ha->plx->edoor_reg));
1287         else if (ha->type == GDT_PCIMPR)
1288             IStatus =
1289                 readb(&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.edoor_reg);
1290 
1291         return IStatus;
1292 }
1293 
1294 static int gdth_test_busy(gdth_ha_str *ha)
1295 {
1296     register int gdtsema0 = 0;
1297 
1298     TRACE(("gdth_test_busy() hanum %d\n", ha->hanum));
1299 
1300     if (ha->type == GDT_EISA)
1301         gdtsema0 = (int)inb(ha->bmic + SEMA0REG);
1302     else if (ha->type == GDT_ISA)
1303         gdtsema0 = (int)readb(&((gdt2_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
1304     else if (ha->type == GDT_PCI)
1305         gdtsema0 = (int)readb(&((gdt6_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
1306     else if (ha->type == GDT_PCINEW) 
1307         gdtsema0 = (int)inb(PTR2USHORT(&ha->plx->sema0_reg));
1308     else if (ha->type == GDT_PCIMPR)
1309         gdtsema0 = 
1310             (int)readb(&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.sema0_reg);
1311 
1312     return (gdtsema0 & 1);
1313 }
1314 
1315 
1316 static int gdth_get_cmd_index(gdth_ha_str *ha)
1317 {
1318     int i;
1319 
1320     TRACE(("gdth_get_cmd_index() hanum %d\n", ha->hanum));
1321 
1322     for (i=0; i<GDTH_MAXCMDS; ++i) {
1323         if (ha->cmd_tab[i].cmnd == UNUSED_CMND) {
1324             ha->cmd_tab[i].cmnd = ha->pccb->RequestBuffer;
1325             ha->cmd_tab[i].service = ha->pccb->Service;
1326             ha->pccb->CommandIndex = (u32)i+2;
1327             return (i+2);
1328         }
1329     }
1330     return 0;
1331 }
1332 
1333 
1334 static void gdth_set_sema0(gdth_ha_str *ha)
1335 {
1336     TRACE(("gdth_set_sema0() hanum %d\n", ha->hanum));
1337 
1338     if (ha->type == GDT_EISA) {
1339         outb(1, ha->bmic + SEMA0REG);
1340     } else if (ha->type == GDT_ISA) {
1341         writeb(1, &((gdt2_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
1342     } else if (ha->type == GDT_PCI) {
1343         writeb(1, &((gdt6_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
1344     } else if (ha->type == GDT_PCINEW) { 
1345         outb(1, PTR2USHORT(&ha->plx->sema0_reg));
1346     } else if (ha->type == GDT_PCIMPR) {
1347         writeb(1, &((gdt6m_dpram_str __iomem *)ha->brd)->i960r.sema0_reg);
1348     }
1349 }
1350 
1351 
1352 static void gdth_copy_command(gdth_ha_str *ha)
1353 {
1354     register gdth_cmd_str *cmd_ptr;
1355     register gdt6m_dpram_str __iomem *dp6m_ptr;
1356     register gdt6c_dpram_str __iomem *dp6c_ptr;
1357     gdt6_dpram_str __iomem *dp6_ptr;
1358     gdt2_dpram_str __iomem *dp2_ptr;
1359     u16 cp_count,dp_offset,cmd_no;
1360     
1361     TRACE(("gdth_copy_command() hanum %d\n", ha->hanum));
1362 
1363     cp_count = ha->cmd_len;
1364     dp_offset= ha->cmd_offs_dpmem;
1365     cmd_no   = ha->cmd_cnt;
1366     cmd_ptr  = ha->pccb;
1367 
1368     ++ha->cmd_cnt;                                                      
1369     if (ha->type == GDT_EISA)
1370         return;                                 /* no DPMEM, no copy */
1371 
1372     /* set cpcount dword aligned */
1373     if (cp_count & 3)
1374         cp_count += (4 - (cp_count & 3));
1375 
1376     ha->cmd_offs_dpmem += cp_count;
1377     
1378     /* set offset and service, copy command to DPMEM */
1379     if (ha->type == GDT_ISA) {
1380         dp2_ptr = ha->brd;
1381         writew(dp_offset + DPMEM_COMMAND_OFFSET,
1382                     &dp2_ptr->u.ic.comm_queue[cmd_no].offset);
1383         writew((u16)cmd_ptr->Service,
1384                     &dp2_ptr->u.ic.comm_queue[cmd_no].serv_id);
1385         memcpy_toio(&dp2_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
1386     } else if (ha->type == GDT_PCI) {
1387         dp6_ptr = ha->brd;
1388         writew(dp_offset + DPMEM_COMMAND_OFFSET,
1389                     &dp6_ptr->u.ic.comm_queue[cmd_no].offset);
1390         writew((u16)cmd_ptr->Service,
1391                     &dp6_ptr->u.ic.comm_queue[cmd_no].serv_id);
1392         memcpy_toio(&dp6_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
1393     } else if (ha->type == GDT_PCINEW) {
1394         dp6c_ptr = ha->brd;
1395         writew(dp_offset + DPMEM_COMMAND_OFFSET,
1396                     &dp6c_ptr->u.ic.comm_queue[cmd_no].offset);
1397         writew((u16)cmd_ptr->Service,
1398                     &dp6c_ptr->u.ic.comm_queue[cmd_no].serv_id);
1399         memcpy_toio(&dp6c_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
1400     } else if (ha->type == GDT_PCIMPR) {
1401         dp6m_ptr = ha->brd;
1402         writew(dp_offset + DPMEM_COMMAND_OFFSET,
1403                     &dp6m_ptr->u.ic.comm_queue[cmd_no].offset);
1404         writew((u16)cmd_ptr->Service,
1405                     &dp6m_ptr->u.ic.comm_queue[cmd_no].serv_id);
1406         memcpy_toio(&dp6m_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
1407     }
1408 }
1409 
1410 
1411 static void gdth_release_event(gdth_ha_str *ha)
1412 {
1413     TRACE(("gdth_release_event() hanum %d\n", ha->hanum));
1414 
1415 #ifdef GDTH_STATISTICS
1416     {
1417         u32 i,j;
1418         for (i=0,j=0; j<GDTH_MAXCMDS; ++j) {
1419             if (ha->cmd_tab[j].cmnd != UNUSED_CMND)
1420                 ++i;
1421         }
1422         if (max_index < i) {
1423             max_index = i;
1424             TRACE3(("GDT: max_index = %d\n",(u16)i));
1425         }
1426     }
1427 #endif
1428 
1429     if (ha->pccb->OpCode == GDT_INIT)
1430         ha->pccb->Service |= 0x80;
1431 
1432     if (ha->type == GDT_EISA) {
1433         if (ha->pccb->OpCode == GDT_INIT)               /* store DMA buffer */
1434             outl(ha->ccb_phys, ha->bmic + MAILBOXREG);
1435         outb(ha->pccb->Service, ha->bmic + LDOORREG);
1436     } else if (ha->type == GDT_ISA) {
1437         writeb(0, &((gdt2_dpram_str __iomem *)ha->brd)->io.event);
1438     } else if (ha->type == GDT_PCI) {
1439         writeb(0, &((gdt6_dpram_str __iomem *)ha->brd)->io.event);
1440     } else if (ha->type == GDT_PCINEW) { 
1441         outb(1, PTR2USHORT(&ha->plx->ldoor_reg));
1442     } else if (ha->type == GDT_PCIMPR) {
1443         writeb(1, &((gdt6m_dpram_str __iomem *)ha->brd)->i960r.ldoor_reg);
1444     }
1445 }
1446 
1447 static int gdth_wait(gdth_ha_str *ha, int index, u32 time)
1448 {
1449     int answer_found = FALSE;
1450     int wait_index = 0;
1451 
1452     TRACE(("gdth_wait() hanum %d index %d time %d\n", ha->hanum, index, time));
1453 
1454     if (index == 0)
1455         return 1;                               /* no wait required */
1456 
1457     do {
1458         __gdth_interrupt(ha, true, &wait_index);
1459         if (wait_index == index) {
1460             answer_found = TRUE;
1461             break;
1462         }
1463         gdth_delay(1);
1464     } while (--time);
1465 
1466     while (gdth_test_busy(ha))
1467         gdth_delay(0);
1468 
1469     return (answer_found);
1470 }
1471 
1472 
1473 static int gdth_internal_cmd(gdth_ha_str *ha, u8 service, u16 opcode,
1474                                             u32 p1, u64 p2, u64 p3)
1475 {
1476     register gdth_cmd_str *cmd_ptr;
1477     int retries,index;
1478 
1479     TRACE2(("gdth_internal_cmd() service %d opcode %d\n",service,opcode));
1480 
1481     cmd_ptr = ha->pccb;
1482     memset((char*)cmd_ptr,0,sizeof(gdth_cmd_str));
1483 
1484     /* make command  */
1485     for (retries = INIT_RETRIES;;) {
1486         cmd_ptr->Service          = service;
1487         cmd_ptr->RequestBuffer    = INTERNAL_CMND;
1488         if (!(index=gdth_get_cmd_index(ha))) {
1489             TRACE(("GDT: No free command index found\n"));
1490             return 0;
1491         }
1492         gdth_set_sema0(ha);
1493         cmd_ptr->OpCode           = opcode;
1494         cmd_ptr->BoardNode        = LOCALBOARD;
1495         if (service == CACHESERVICE) {
1496             if (opcode == GDT_IOCTL) {
1497                 cmd_ptr->u.ioctl.subfunc = p1;
1498                 cmd_ptr->u.ioctl.channel = (u32)p2;
1499                 cmd_ptr->u.ioctl.param_size = (u16)p3;
1500                 cmd_ptr->u.ioctl.p_param = ha->scratch_phys;
1501             } else {
1502                 if (ha->cache_feat & GDT_64BIT) {
1503                     cmd_ptr->u.cache64.DeviceNo = (u16)p1;
1504                     cmd_ptr->u.cache64.BlockNo  = p2;
1505                 } else {
1506                     cmd_ptr->u.cache.DeviceNo = (u16)p1;
1507                     cmd_ptr->u.cache.BlockNo  = (u32)p2;
1508                 }
1509             }
1510         } else if (service == SCSIRAWSERVICE) {
1511             if (ha->raw_feat & GDT_64BIT) {
1512                 cmd_ptr->u.raw64.direction  = p1;
1513                 cmd_ptr->u.raw64.bus        = (u8)p2;
1514                 cmd_ptr->u.raw64.target     = (u8)p3;
1515                 cmd_ptr->u.raw64.lun        = (u8)(p3 >> 8);
1516             } else {
1517                 cmd_ptr->u.raw.direction  = p1;
1518                 cmd_ptr->u.raw.bus        = (u8)p2;
1519                 cmd_ptr->u.raw.target     = (u8)p3;
1520                 cmd_ptr->u.raw.lun        = (u8)(p3 >> 8);
1521             }
1522         } else if (service == SCREENSERVICE) {
1523             if (opcode == GDT_REALTIME) {
1524                 *(u32 *)&cmd_ptr->u.screen.su.data[0] = p1;
1525                 *(u32 *)&cmd_ptr->u.screen.su.data[4] = (u32)p2;
1526                 *(u32 *)&cmd_ptr->u.screen.su.data[8] = (u32)p3;
1527             }
1528         }
1529         ha->cmd_len          = sizeof(gdth_cmd_str);
1530         ha->cmd_offs_dpmem   = 0;
1531         ha->cmd_cnt          = 0;
1532         gdth_copy_command(ha);
1533         gdth_release_event(ha);
1534         gdth_delay(20);
1535         if (!gdth_wait(ha, index, INIT_TIMEOUT)) {
1536             printk("GDT: Initialization error (timeout service %d)\n",service);
1537             return 0;
1538         }
1539         if (ha->status != S_BSY || --retries == 0)
1540             break;
1541         gdth_delay(1);   
1542     }   
1543     
1544     return (ha->status != S_OK ? 0:1);
1545 }
1546     
1547 
1548 /* search for devices */
1549 
1550 static int gdth_search_drives(gdth_ha_str *ha)
1551 {
1552     u16 cdev_cnt, i;
1553     int ok;
1554     u32 bus_no, drv_cnt, drv_no, j;
1555     gdth_getch_str *chn;
1556     gdth_drlist_str *drl;
1557     gdth_iochan_str *ioc;
1558     gdth_raw_iochan_str *iocr;
1559     gdth_arcdl_str *alst;
1560     gdth_alist_str *alst2;
1561     gdth_oem_str_ioctl *oemstr;
1562 #ifdef INT_COAL
1563     gdth_perf_modes *pmod;
1564 #endif
1565 
1566 #ifdef GDTH_RTC
1567     u8 rtc[12];
1568     unsigned long flags;
1569 #endif     
1570    
1571     TRACE(("gdth_search_drives() hanum %d\n", ha->hanum));
1572     ok = 0;
1573 
1574     /* initialize controller services, at first: screen service */
1575     ha->screen_feat = 0;
1576     if (!force_dma32) {
1577         ok = gdth_internal_cmd(ha, SCREENSERVICE, GDT_X_INIT_SCR, 0, 0, 0);
1578         if (ok)
1579             ha->screen_feat = GDT_64BIT;
1580     }
1581     if (force_dma32 || (!ok && ha->status == (u16)S_NOFUNC))
1582         ok = gdth_internal_cmd(ha, SCREENSERVICE, GDT_INIT, 0, 0, 0);
1583     if (!ok) {
1584         printk("GDT-HA %d: Initialization error screen service (code %d)\n",
1585                ha->hanum, ha->status);
1586         return 0;
1587     }
1588     TRACE2(("gdth_search_drives(): SCREENSERVICE initialized\n"));
1589 
1590 #ifdef GDTH_RTC
1591     /* read realtime clock info, send to controller */
1592     /* 1. wait for the falling edge of update flag */
1593     spin_lock_irqsave(&rtc_lock, flags);
1594     for (j = 0; j < 1000000; ++j)
1595         if (CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP)
1596             break;
1597     for (j = 0; j < 1000000; ++j)
1598         if (!(CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP))
1599             break;
1600     /* 2. read info */
1601     do {
1602         for (j = 0; j < 12; ++j) 
1603             rtc[j] = CMOS_READ(j);
1604     } while (rtc[0] != CMOS_READ(0));
1605     spin_unlock_irqrestore(&rtc_lock, flags);
1606     TRACE2(("gdth_search_drives(): RTC: %x/%x/%x\n",*(u32 *)&rtc[0],
1607             *(u32 *)&rtc[4], *(u32 *)&rtc[8]));
1608     /* 3. send to controller firmware */
1609     gdth_internal_cmd(ha, SCREENSERVICE, GDT_REALTIME, *(u32 *)&rtc[0],
1610                       *(u32 *)&rtc[4], *(u32 *)&rtc[8]);
1611 #endif  
1612  
1613     /* unfreeze all IOs */
1614     gdth_internal_cmd(ha, CACHESERVICE, GDT_UNFREEZE_IO, 0, 0, 0);
1615  
1616     /* initialize cache service */
1617     ha->cache_feat = 0;
1618     if (!force_dma32) {
1619         ok = gdth_internal_cmd(ha, CACHESERVICE, GDT_X_INIT_HOST, LINUX_OS,
1620                                                                          0, 0);
1621         if (ok)
1622             ha->cache_feat = GDT_64BIT;
1623     }
1624     if (force_dma32 || (!ok && ha->status == (u16)S_NOFUNC))
1625         ok = gdth_internal_cmd(ha, CACHESERVICE, GDT_INIT, LINUX_OS, 0, 0);
1626     if (!ok) {
1627         printk("GDT-HA %d: Initialization error cache service (code %d)\n",
1628                ha->hanum, ha->status);
1629         return 0;
1630     }
1631     TRACE2(("gdth_search_drives(): CACHESERVICE initialized\n"));
1632     cdev_cnt = (u16)ha->info;
1633     ha->fw_vers = ha->service;
1634 
1635 #ifdef INT_COAL
1636     if (ha->type == GDT_PCIMPR) {
1637         /* set perf. modes */
1638         pmod = (gdth_perf_modes *)ha->pscratch;
1639         pmod->version          = 1;
1640         pmod->st_mode          = 1;    /* enable one status buffer */
1641         *((u64 *)&pmod->st_buff_addr1) = ha->coal_stat_phys;
1642         pmod->st_buff_indx1    = COALINDEX;
1643         pmod->st_buff_addr2    = 0;
1644         pmod->st_buff_u_addr2  = 0;
1645         pmod->st_buff_indx2    = 0;
1646         pmod->st_buff_size     = sizeof(gdth_coal_status) * MAXOFFSETS;
1647         pmod->cmd_mode         = 0;    // disable all cmd buffers
1648         pmod->cmd_buff_addr1   = 0;
1649         pmod->cmd_buff_u_addr1 = 0;
1650         pmod->cmd_buff_indx1   = 0;
1651         pmod->cmd_buff_addr2   = 0;
1652         pmod->cmd_buff_u_addr2 = 0;
1653         pmod->cmd_buff_indx2   = 0;
1654         pmod->cmd_buff_size    = 0;
1655         pmod->reserved1        = 0;            
1656         pmod->reserved2        = 0;            
1657         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, SET_PERF_MODES,
1658                               INVALID_CHANNEL,sizeof(gdth_perf_modes))) {
1659             printk("GDT-HA %d: Interrupt coalescing activated\n", ha->hanum);
1660         }
1661     }
1662 #endif
1663 
1664     /* detect number of buses - try new IOCTL */
1665     iocr = (gdth_raw_iochan_str *)ha->pscratch;
1666     iocr->hdr.version        = 0xffffffff;
1667     iocr->hdr.list_entries   = MAXBUS;
1668     iocr->hdr.first_chan     = 0;
1669     iocr->hdr.last_chan      = MAXBUS-1;
1670     iocr->hdr.list_offset    = GDTOFFSOF(gdth_raw_iochan_str, list[0]);
1671     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, IOCHAN_RAW_DESC,
1672                           INVALID_CHANNEL,sizeof(gdth_raw_iochan_str))) {
1673         TRACE2(("IOCHAN_RAW_DESC supported!\n"));
1674         ha->bus_cnt = iocr->hdr.chan_count;
1675         for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
1676             if (iocr->list[bus_no].proc_id < MAXID)
1677                 ha->bus_id[bus_no] = iocr->list[bus_no].proc_id;
1678             else
1679                 ha->bus_id[bus_no] = 0xff;
1680         }
1681     } else {
1682         /* old method */
1683         chn = (gdth_getch_str *)ha->pscratch;
1684         for (bus_no = 0; bus_no < MAXBUS; ++bus_no) {
1685             chn->channel_no = bus_no;
1686             if (!gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1687                                    SCSI_CHAN_CNT | L_CTRL_PATTERN,
1688                                    IO_CHANNEL | INVALID_CHANNEL,
1689                                    sizeof(gdth_getch_str))) {
1690                 if (bus_no == 0) {
1691                     printk("GDT-HA %d: Error detecting channel count (0x%x)\n",
1692                            ha->hanum, ha->status);
1693                     return 0;
1694                 }
1695                 break;
1696             }
1697             if (chn->siop_id < MAXID)
1698                 ha->bus_id[bus_no] = chn->siop_id;
1699             else
1700                 ha->bus_id[bus_no] = 0xff;
1701         }       
1702         ha->bus_cnt = (u8)bus_no;
1703     }
1704     TRACE2(("gdth_search_drives() %d channels\n",ha->bus_cnt));
1705 
1706     /* read cache configuration */
1707     if (!gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, CACHE_INFO,
1708                            INVALID_CHANNEL,sizeof(gdth_cinfo_str))) {
1709         printk("GDT-HA %d: Initialization error cache service (code %d)\n",
1710                ha->hanum, ha->status);
1711         return 0;
1712     }
1713     ha->cpar = ((gdth_cinfo_str *)ha->pscratch)->cpar;
1714     TRACE2(("gdth_search_drives() cinfo: vs %x sta %d str %d dw %d b %d\n",
1715             ha->cpar.version,ha->cpar.state,ha->cpar.strategy,
1716             ha->cpar.write_back,ha->cpar.block_size));
1717 
1718     /* read board info and features */
1719     ha->more_proc = FALSE;
1720     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, BOARD_INFO,
1721                           INVALID_CHANNEL,sizeof(gdth_binfo_str))) {
1722         memcpy(&ha->binfo, (gdth_binfo_str *)ha->pscratch,
1723                sizeof(gdth_binfo_str));
1724         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, BOARD_FEATURES,
1725                               INVALID_CHANNEL,sizeof(gdth_bfeat_str))) {
1726             TRACE2(("BOARD_INFO/BOARD_FEATURES supported\n"));
1727             ha->bfeat = *(gdth_bfeat_str *)ha->pscratch;
1728             ha->more_proc = TRUE;
1729         }
1730     } else {
1731         TRACE2(("BOARD_INFO requires firmware >= 1.10/2.08\n"));
1732         strcpy(ha->binfo.type_string, gdth_ctr_name(ha));
1733     }
1734     TRACE2(("Controller name: %s\n",ha->binfo.type_string));
1735 
1736     /* read more informations */
1737     if (ha->more_proc) {
1738         /* physical drives, channel addresses */
1739         ioc = (gdth_iochan_str *)ha->pscratch;
1740         ioc->hdr.version        = 0xffffffff;
1741         ioc->hdr.list_entries   = MAXBUS;
1742         ioc->hdr.first_chan     = 0;
1743         ioc->hdr.last_chan      = MAXBUS-1;
1744         ioc->hdr.list_offset    = GDTOFFSOF(gdth_iochan_str, list[0]);
1745         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, IOCHAN_DESC,
1746                               INVALID_CHANNEL,sizeof(gdth_iochan_str))) {
1747             for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
1748                 ha->raw[bus_no].address = ioc->list[bus_no].address;
1749                 ha->raw[bus_no].local_no = ioc->list[bus_no].local_no;
1750             }
1751         } else {
1752             for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
1753                 ha->raw[bus_no].address = IO_CHANNEL;
1754                 ha->raw[bus_no].local_no = bus_no;
1755             }
1756         }
1757         for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
1758             chn = (gdth_getch_str *)ha->pscratch;
1759             chn->channel_no = ha->raw[bus_no].local_no;
1760             if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1761                                   SCSI_CHAN_CNT | L_CTRL_PATTERN,
1762                                   ha->raw[bus_no].address | INVALID_CHANNEL,
1763                                   sizeof(gdth_getch_str))) {
1764                 ha->raw[bus_no].pdev_cnt = chn->drive_cnt;
1765                 TRACE2(("Channel %d: %d phys. drives\n",
1766                         bus_no,chn->drive_cnt));
1767             }
1768             if (ha->raw[bus_no].pdev_cnt > 0) {
1769                 drl = (gdth_drlist_str *)ha->pscratch;
1770                 drl->sc_no = ha->raw[bus_no].local_no;
1771                 drl->sc_cnt = ha->raw[bus_no].pdev_cnt;
1772                 if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1773                                       SCSI_DR_LIST | L_CTRL_PATTERN,
1774                                       ha->raw[bus_no].address | INVALID_CHANNEL,
1775                                       sizeof(gdth_drlist_str))) {
1776                     for (j = 0; j < ha->raw[bus_no].pdev_cnt; ++j) 
1777                         ha->raw[bus_no].id_list[j] = drl->sc_list[j];
1778                 } else {
1779                     ha->raw[bus_no].pdev_cnt = 0;
1780                 }
1781             }
1782         }
1783 
1784         /* logical drives */
1785         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, CACHE_DRV_CNT,
1786                               INVALID_CHANNEL,sizeof(u32))) {
1787             drv_cnt = *(u32 *)ha->pscratch;
1788             if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, CACHE_DRV_LIST,
1789                                   INVALID_CHANNEL,drv_cnt * sizeof(u32))) {
1790                 for (j = 0; j < drv_cnt; ++j) {
1791                     drv_no = ((u32 *)ha->pscratch)[j];
1792                     if (drv_no < MAX_LDRIVES) {
1793                         ha->hdr[drv_no].is_logdrv = TRUE;
1794                         TRACE2(("Drive %d is log. drive\n",drv_no));
1795                     }
1796                 }
1797             }
1798             alst = (gdth_arcdl_str *)ha->pscratch;
1799             alst->entries_avail = MAX_LDRIVES;
1800             alst->first_entry = 0;
1801             alst->list_offset = GDTOFFSOF(gdth_arcdl_str, list[0]);
1802             if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1803                                   ARRAY_DRV_LIST2 | LA_CTRL_PATTERN, 
1804                                   INVALID_CHANNEL, sizeof(gdth_arcdl_str) +
1805                                   (alst->entries_avail-1) * sizeof(gdth_alist_str))) { 
1806                 for (j = 0; j < alst->entries_init; ++j) {
1807                     ha->hdr[j].is_arraydrv = alst->list[j].is_arrayd;
1808                     ha->hdr[j].is_master = alst->list[j].is_master;
1809                     ha->hdr[j].is_parity = alst->list[j].is_parity;
1810                     ha->hdr[j].is_hotfix = alst->list[j].is_hotfix;
1811                     ha->hdr[j].master_no = alst->list[j].cd_handle;
1812                 }
1813             } else if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1814                                          ARRAY_DRV_LIST | LA_CTRL_PATTERN,
1815                                          0, 35 * sizeof(gdth_alist_str))) {
1816                 for (j = 0; j < 35; ++j) {
1817                     alst2 = &((gdth_alist_str *)ha->pscratch)[j];
1818                     ha->hdr[j].is_arraydrv = alst2->is_arrayd;
1819                     ha->hdr[j].is_master = alst2->is_master;
1820                     ha->hdr[j].is_parity = alst2->is_parity;
1821                     ha->hdr[j].is_hotfix = alst2->is_hotfix;
1822                     ha->hdr[j].master_no = alst2->cd_handle;
1823                 }
1824             }
1825         }
1826     }       
1827                                   
1828     /* initialize raw service */
1829     ha->raw_feat = 0;
1830     if (!force_dma32) {
1831         ok = gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_X_INIT_RAW, 0, 0, 0);
1832         if (ok)
1833             ha->raw_feat = GDT_64BIT;
1834     }
1835     if (force_dma32 || (!ok && ha->status == (u16)S_NOFUNC))
1836         ok = gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_INIT, 0, 0, 0);
1837     if (!ok) {
1838         printk("GDT-HA %d: Initialization error raw service (code %d)\n",
1839                ha->hanum, ha->status);
1840         return 0;
1841     }
1842     TRACE2(("gdth_search_drives(): RAWSERVICE initialized\n"));
1843 
1844     /* set/get features raw service (scatter/gather) */
1845     if (gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_SET_FEAT, SCATTER_GATHER,
1846                           0, 0)) {
1847         TRACE2(("gdth_search_drives(): set features RAWSERVICE OK\n"));
1848         if (gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_GET_FEAT, 0, 0, 0)) {
1849             TRACE2(("gdth_search_dr(): get feat RAWSERVICE %d\n",
1850                     ha->info));
1851             ha->raw_feat |= (u16)ha->info;
1852         }
1853     } 
1854 
1855     /* set/get features cache service (equal to raw service) */
1856     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_SET_FEAT, 0,
1857                           SCATTER_GATHER,0)) {
1858         TRACE2(("gdth_search_drives(): set features CACHESERVICE OK\n"));
1859         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_GET_FEAT, 0, 0, 0)) {
1860             TRACE2(("gdth_search_dr(): get feat CACHESERV. %d\n",
1861                     ha->info));
1862             ha->cache_feat |= (u16)ha->info;
1863         }
1864     }
1865 
1866     /* reserve drives for raw service */
1867     if (reserve_mode != 0) {
1868         gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_RESERVE_ALL,
1869                           reserve_mode == 1 ? 1 : 3, 0, 0);
1870         TRACE2(("gdth_search_drives(): RESERVE_ALL code %d\n", 
1871                 ha->status));
1872     }
1873     for (i = 0; i < MAX_RES_ARGS; i += 4) {
1874         if (reserve_list[i] == ha->hanum && reserve_list[i+1] < ha->bus_cnt &&
1875             reserve_list[i+2] < ha->tid_cnt && reserve_list[i+3] < MAXLUN) {
1876             TRACE2(("gdth_search_drives(): reserve ha %d bus %d id %d lun %d\n",
1877                     reserve_list[i], reserve_list[i+1],
1878                     reserve_list[i+2], reserve_list[i+3]));
1879             if (!gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_RESERVE, 0,
1880                                    reserve_list[i+1], reserve_list[i+2] | 
1881                                    (reserve_list[i+3] << 8))) {
1882                 printk("GDT-HA %d: Error raw service (RESERVE, code %d)\n",
1883                        ha->hanum, ha->status);
1884              }
1885         }
1886     }
1887 
1888     /* Determine OEM string using IOCTL */
1889     oemstr = (gdth_oem_str_ioctl *)ha->pscratch;
1890     oemstr->params.ctl_version = 0x01;
1891     oemstr->params.buffer_size = sizeof(oemstr->text);
1892     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1893                           CACHE_READ_OEM_STRING_RECORD,INVALID_CHANNEL,
1894                           sizeof(gdth_oem_str_ioctl))) {
1895         TRACE2(("gdth_search_drives(): CACHE_READ_OEM_STRING_RECORD OK\n"));
1896         printk("GDT-HA %d: Vendor: %s Name: %s\n",
1897                ha->hanum, oemstr->text.oem_company_name, ha->binfo.type_string);
1898         /* Save the Host Drive inquiry data */
1899         strlcpy(ha->oem_name,oemstr->text.scsi_host_drive_inquiry_vendor_id,
1900                 sizeof(ha->oem_name));
1901     } else {
1902         /* Old method, based on PCI ID */
1903         TRACE2(("gdth_search_drives(): CACHE_READ_OEM_STRING_RECORD failed\n"));
1904         printk("GDT-HA %d: Name: %s\n",
1905                ha->hanum, ha->binfo.type_string);
1906         if (ha->oem_id == OEM_ID_INTEL)
1907             strlcpy(ha->oem_name,"Intel  ", sizeof(ha->oem_name));
1908         else
1909             strlcpy(ha->oem_name,"ICP    ", sizeof(ha->oem_name));
1910     }
1911 
1912     /* scanning for host drives */
1913     for (i = 0; i < cdev_cnt; ++i) 
1914         gdth_analyse_hdrive(ha, i);
1915     
1916     TRACE(("gdth_search_drives() OK\n"));
1917     return 1;
1918 }
1919 
1920 static int gdth_analyse_hdrive(gdth_ha_str *ha, u16 hdrive)
1921 {
1922     u32 drv_cyls;
1923     int drv_hds, drv_secs;
1924 
1925     TRACE(("gdth_analyse_hdrive() hanum %d drive %d\n", ha->hanum, hdrive));
1926     if (hdrive >= MAX_HDRIVES)
1927         return 0;
1928 
1929     if (!gdth_internal_cmd(ha, CACHESERVICE, GDT_INFO, hdrive, 0, 0))
1930         return 0;
1931     ha->hdr[hdrive].present = TRUE;
1932     ha->hdr[hdrive].size = ha->info;
1933    
1934     /* evaluate mapping (sectors per head, heads per cylinder) */
1935     ha->hdr[hdrive].size &= ~SECS32;
1936     if (ha->info2 == 0) {
1937         gdth_eval_mapping(ha->hdr[hdrive].size,&drv_cyls,&drv_hds,&drv_secs);
1938     } else {
1939         drv_hds = ha->info2 & 0xff;
1940         drv_secs = (ha->info2 >> 8) & 0xff;
1941         drv_cyls = (u32)ha->hdr[hdrive].size / drv_hds / drv_secs;
1942     }
1943     ha->hdr[hdrive].heads = (u8)drv_hds;
1944     ha->hdr[hdrive].secs  = (u8)drv_secs;
1945     /* round size */
1946     ha->hdr[hdrive].size  = drv_cyls * drv_hds * drv_secs;
1947     
1948     if (ha->cache_feat & GDT_64BIT) {
1949         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_X_INFO, hdrive, 0, 0)
1950             && ha->info2 != 0) {
1951             ha->hdr[hdrive].size = ((u64)ha->info2 << 32) | ha->info;
1952         }
1953     }
1954     TRACE2(("gdth_search_dr() cdr. %d size %d hds %d scs %d\n",
1955             hdrive,ha->hdr[hdrive].size,drv_hds,drv_secs));
1956 
1957     /* get informations about device */
1958     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_DEVTYPE, hdrive, 0, 0)) {
1959         TRACE2(("gdth_search_dr() cache drive %d devtype %d\n",
1960                 hdrive,ha->info));
1961         ha->hdr[hdrive].devtype = (u16)ha->info;
1962     }
1963 
1964     /* cluster info */
1965     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_CLUST_INFO, hdrive, 0, 0)) {
1966         TRACE2(("gdth_search_dr() cache drive %d cluster info %d\n",
1967                 hdrive,ha->info));
1968         if (!shared_access)
1969             ha->hdr[hdrive].cluster_type = (u8)ha->info;
1970     }
1971 
1972     /* R/W attributes */
1973     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_RW_ATTRIBS, hdrive, 0, 0)) {
1974         TRACE2(("gdth_search_dr() cache drive %d r/w attrib. %d\n",
1975                 hdrive,ha->info));
1976         ha->hdr[hdrive].rw_attribs = (u8)ha->info;
1977     }
1978 
1979     return 1;
1980 }
1981 
1982 
1983 /* command queueing/sending functions */
1984 
1985 static void gdth_putq(gdth_ha_str *ha, Scsi_Cmnd *scp, u8 priority)
1986 {
1987     struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
1988     register Scsi_Cmnd *pscp;
1989     register Scsi_Cmnd *nscp;
1990     unsigned long flags;
1991 
1992     TRACE(("gdth_putq() priority %d\n",priority));
1993     spin_lock_irqsave(&ha->smp_lock, flags);
1994 
1995     if (!cmndinfo->internal_command)
1996         cmndinfo->priority = priority;
1997 
1998     if (ha->req_first==NULL) {
1999         ha->req_first = scp;                    /* queue was empty */
2000         scp->SCp.ptr = NULL;
2001     } else {                                    /* queue not empty */
2002         pscp = ha->req_first;
2003         nscp = (Scsi_Cmnd *)pscp->SCp.ptr;
2004         /* priority: 0-highest,..,0xff-lowest */
2005         while (nscp && gdth_cmnd_priv(nscp)->priority <= priority) {
2006             pscp = nscp;
2007             nscp = (Scsi_Cmnd *)pscp->SCp.ptr;
2008         }
2009         pscp->SCp.ptr = (char *)scp;
2010         scp->SCp.ptr  = (char *)nscp;
2011     }
2012     spin_unlock_irqrestore(&ha->smp_lock, flags);
2013 
2014 #ifdef GDTH_STATISTICS
2015     flags = 0;
2016     for (nscp=ha->req_first; nscp; nscp=(Scsi_Cmnd*)nscp->SCp.ptr)
2017         ++flags;
2018     if (max_rq < flags) {
2019         max_rq = flags;
2020         TRACE3(("GDT: max_rq = %d\n",(u16)max_rq));
2021     }
2022 #endif
2023 }
2024 
2025 static void gdth_next(gdth_ha_str *ha)
2026 {
2027     register Scsi_Cmnd *pscp;
2028     register Scsi_Cmnd *nscp;
2029     u8 b, t, l, firsttime;
2030     u8 this_cmd, next_cmd;
2031     unsigned long flags = 0;
2032     int cmd_index;
2033 
2034     TRACE(("gdth_next() hanum %d\n", ha->hanum));
2035     if (!gdth_polling) 
2036         spin_lock_irqsave(&ha->smp_lock, flags);
2037 
2038     ha->cmd_cnt = ha->cmd_offs_dpmem = 0;
2039     this_cmd = firsttime = TRUE;
2040     next_cmd = gdth_polling ? FALSE:TRUE;
2041     cmd_index = 0;
2042 
2043     for (nscp = pscp = ha->req_first; nscp; nscp = (Scsi_Cmnd *)nscp->SCp.ptr) {
2044         struct gdth_cmndinfo *nscp_cmndinfo = gdth_cmnd_priv(nscp);
2045         if (nscp != pscp && nscp != (Scsi_Cmnd *)pscp->SCp.ptr)
2046             pscp = (Scsi_Cmnd *)pscp->SCp.ptr;
2047         if (!nscp_cmndinfo->internal_command) {
2048             b = nscp->device->channel;
2049             t = nscp->device->id;
2050             l = nscp->device->lun;
2051             if (nscp_cmndinfo->priority >= DEFAULT_PRI) {
2052                 if ((b != ha->virt_bus && ha->raw[BUS_L2P(ha,b)].lock) ||
2053                     (b == ha->virt_bus && t < MAX_HDRIVES && ha->hdr[t].lock))
2054                     continue;
2055             }
2056         } else
2057             b = t = l = 0;
2058 
2059         if (firsttime) {
2060             if (gdth_test_busy(ha)) {        /* controller busy ? */
2061                 TRACE(("gdth_next() controller %d busy !\n", ha->hanum));
2062                 if (!gdth_polling) {
2063                     spin_unlock_irqrestore(&ha->smp_lock, flags);
2064                     return;
2065                 }
2066                 while (gdth_test_busy(ha))
2067                     gdth_delay(1);
2068             }   
2069             firsttime = FALSE;
2070         }
2071 
2072         if (!nscp_cmndinfo->internal_command) {
2073         if (nscp_cmndinfo->phase == -1) {
2074             nscp_cmndinfo->phase = CACHESERVICE;           /* default: cache svc. */
2075             if (nscp->cmnd[0] == TEST_UNIT_READY) {
2076                 TRACE2(("TEST_UNIT_READY Bus %d Id %d LUN %d\n", 
2077                         b, t, l));
2078                 /* TEST_UNIT_READY -> set scan mode */
2079                 if ((ha->scan_mode & 0x0f) == 0) {
2080                     if (b == 0 && t == 0 && l == 0) {
2081                         ha->scan_mode |= 1;
2082                         TRACE2(("Scan mode: 0x%x\n", ha->scan_mode));
2083                     }
2084                 } else if ((ha->scan_mode & 0x0f) == 1) {
2085                     if (b == 0 && ((t == 0 && l == 1) ||
2086                          (t == 1 && l == 0))) {
2087                         nscp_cmndinfo->OpCode = GDT_SCAN_START;
2088                         nscp_cmndinfo->phase = ((ha->scan_mode & 0x10 ? 1:0) << 8)
2089                             | SCSIRAWSERVICE;
2090                         ha->scan_mode = 0x12;
2091                         TRACE2(("Scan mode: 0x%x (SCAN_START)\n", 
2092                                 ha->scan_mode));
2093                     } else {
2094                         ha->scan_mode &= 0x10;
2095                         TRACE2(("Scan mode: 0x%x\n", ha->scan_mode));
2096                     }                   
2097                 } else if (ha->scan_mode == 0x12) {
2098                     if (b == ha->bus_cnt && t == ha->tid_cnt-1) {
2099                         nscp_cmndinfo->phase = SCSIRAWSERVICE;
2100                         nscp_cmndinfo->OpCode = GDT_SCAN_END;
2101                         ha->scan_mode &= 0x10;
2102                         TRACE2(("Scan mode: 0x%x (SCAN_END)\n", 
2103                                 ha->scan_mode));
2104                     }
2105                 }
2106             }
2107             if (b == ha->virt_bus && nscp->cmnd[0] != INQUIRY &&
2108                 nscp->cmnd[0] != READ_CAPACITY && nscp->cmnd[0] != MODE_SENSE &&
2109                 (ha->hdr[t].cluster_type & CLUSTER_DRIVE)) {
2110                 /* always GDT_CLUST_INFO! */
2111                 nscp_cmndinfo->OpCode = GDT_CLUST_INFO;
2112             }
2113         }
2114         }
2115 
2116         if (nscp_cmndinfo->OpCode != -1) {
2117             if ((nscp_cmndinfo->phase & 0xff) == CACHESERVICE) {
2118                 if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
2119                     this_cmd = FALSE;
2120                 next_cmd = FALSE;
2121             } else if ((nscp_cmndinfo->phase & 0xff) == SCSIRAWSERVICE) {
2122                 if (!(cmd_index=gdth_fill_raw_cmd(ha, nscp, BUS_L2P(ha, b))))
2123                     this_cmd = FALSE;
2124                 next_cmd = FALSE;
2125             } else {
2126                 memset((char*)nscp->sense_buffer,0,16);
2127                 nscp->sense_buffer[0] = 0x70;
2128                 nscp->sense_buffer[2] = NOT_READY;
2129                 nscp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
2130                 if (!nscp_cmndinfo->wait_for_completion)
2131                     nscp_cmndinfo->wait_for_completion++;
2132                 else
2133                     gdth_scsi_done(nscp);
2134             }
2135         } else if (gdth_cmnd_priv(nscp)->internal_command) {
2136             if (!(cmd_index=gdth_special_cmd(ha, nscp)))
2137                 this_cmd = FALSE;
2138             next_cmd = FALSE;
2139         } else if (b != ha->virt_bus) {
2140             if (ha->raw[BUS_L2P(ha,b)].io_cnt[t] >= GDTH_MAX_RAW ||
2141                 !(cmd_index=gdth_fill_raw_cmd(ha, nscp, BUS_L2P(ha, b))))
2142                 this_cmd = FALSE;
2143             else 
2144                 ha->raw[BUS_L2P(ha,b)].io_cnt[t]++;
2145         } else if (t >= MAX_HDRIVES || !ha->hdr[t].present || l != 0) {
2146             TRACE2(("Command 0x%x to bus %d id %d lun %d -> IGNORE\n",
2147                     nscp->cmnd[0], b, t, l));
2148             nscp->result = DID_BAD_TARGET << 16;
2149             if (!nscp_cmndinfo->wait_for_completion)
2150                 nscp_cmndinfo->wait_for_completion++;
2151             else
2152                 gdth_scsi_done(nscp);
2153         } else {
2154             switch (nscp->cmnd[0]) {
2155               case TEST_UNIT_READY:
2156               case INQUIRY:
2157               case REQUEST_SENSE:
2158               case READ_CAPACITY:
2159               case VERIFY:
2160               case START_STOP:
2161               case MODE_SENSE:
2162               case SERVICE_ACTION_IN_16:
2163                 TRACE(("cache cmd %x/%x/%x/%x/%x/%x\n",nscp->cmnd[0],
2164                        nscp->cmnd[1],nscp->cmnd[2],nscp->cmnd[3],
2165                        nscp->cmnd[4],nscp->cmnd[5]));
2166                 if (ha->hdr[t].media_changed && nscp->cmnd[0] != INQUIRY) {
2167                     /* return UNIT_ATTENTION */
2168                     TRACE2(("cmd 0x%x target %d: UNIT_ATTENTION\n",
2169                              nscp->cmnd[0], t));
2170                     ha->hdr[t].media_changed = FALSE;
2171                     memset((char*)nscp->sense_buffer,0,16);
2172                     nscp->sense_buffer[0] = 0x70;
2173                     nscp->sense_buffer[2] = UNIT_ATTENTION;
2174                     nscp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
2175                     if (!nscp_cmndinfo->wait_for_completion)
2176                         nscp_cmndinfo->wait_for_completion++;
2177                     else
2178                         gdth_scsi_done(nscp);
2179                 } else if (gdth_internal_cache_cmd(ha, nscp))
2180                     gdth_scsi_done(nscp);
2181                 break;
2182 
2183               case ALLOW_MEDIUM_REMOVAL:
2184                 TRACE(("cache cmd %x/%x/%x/%x/%x/%x\n",nscp->cmnd[0],
2185                        nscp->cmnd[1],nscp->cmnd[2],nscp->cmnd[3],
2186                        nscp->cmnd[4],nscp->cmnd[5]));
2187                 if ( (nscp->cmnd[4]&1) && !(ha->hdr[t].devtype&1) ) {
2188                     TRACE(("Prevent r. nonremov. drive->do nothing\n"));
2189                     nscp->result = DID_OK << 16;
2190                     nscp->sense_buffer[0] = 0;
2191                     if (!nscp_cmndinfo->wait_for_completion)
2192                         nscp_cmndinfo->wait_for_completion++;
2193                     else
2194                         gdth_scsi_done(nscp);
2195                 } else {
2196                     nscp->cmnd[3] = (ha->hdr[t].devtype&1) ? 1:0;
2197                     TRACE(("Prevent/allow r. %d rem. drive %d\n",
2198                            nscp->cmnd[4],nscp->cmnd[3]));
2199                     if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
2200                         this_cmd = FALSE;
2201                 }
2202                 break;
2203                 
2204               case RESERVE:
2205               case RELEASE:
2206                 TRACE2(("cache cmd %s\n",nscp->cmnd[0] == RESERVE ?
2207                         "RESERVE" : "RELEASE"));
2208                 if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
2209                     this_cmd = FALSE;
2210                 break;
2211                 
2212               case READ_6:
2213               case WRITE_6:
2214               case READ_10:
2215               case WRITE_10:
2216               case READ_16:
2217               case WRITE_16:
2218                 if (ha->hdr[t].media_changed) {
2219                     /* return UNIT_ATTENTION */
2220                     TRACE2(("cmd 0x%x target %d: UNIT_ATTENTION\n",
2221                              nscp->cmnd[0], t));
2222                     ha->hdr[t].media_changed = FALSE;
2223                     memset((char*)nscp->sense_buffer,0,16);
2224                     nscp->sense_buffer[0] = 0x70;
2225                     nscp->sense_buffer[2] = UNIT_ATTENTION;
2226                     nscp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
2227                     if (!nscp_cmndinfo->wait_for_completion)
2228                         nscp_cmndinfo->wait_for_completion++;
2229                     else
2230                         gdth_scsi_done(nscp);
2231                 } else if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
2232                     this_cmd = FALSE;
2233                 break;
2234 
2235               default:
2236                 TRACE2(("cache cmd %x/%x/%x/%x/%x/%x unknown\n",nscp->cmnd[0],
2237                         nscp->cmnd[1],nscp->cmnd[2],nscp->cmnd[3],
2238                         nscp->cmnd[4],nscp->cmnd[5]));
2239                 printk("GDT-HA %d: Unknown SCSI command 0x%x to cache service !\n",
2240                        ha->hanum, nscp->cmnd[0]);
2241                 nscp->result = DID_ABORT << 16;
2242                 if (!nscp_cmndinfo->wait_for_completion)
2243                     nscp_cmndinfo->wait_for_completion++;
2244                 else
2245                     gdth_scsi_done(nscp);
2246                 break;
2247             }
2248         }
2249 
2250         if (!this_cmd)
2251             break;
2252         if (nscp == ha->req_first)
2253             ha->req_first = pscp = (Scsi_Cmnd *)nscp->SCp.ptr;
2254         else
2255             pscp->SCp.ptr = nscp->SCp.ptr;
2256         if (!next_cmd)
2257             break;
2258     }
2259 
2260     if (ha->cmd_cnt > 0) {
2261         gdth_release_event(ha);
2262     }
2263 
2264     if (!gdth_polling) 
2265         spin_unlock_irqrestore(&ha->smp_lock, flags);
2266 
2267     if (gdth_polling && ha->cmd_cnt > 0) {
2268         if (!gdth_wait(ha, cmd_index, POLL_TIMEOUT))
2269             printk("GDT-HA %d: Command %d timed out !\n",
2270                    ha->hanum, cmd_index);
2271     }
2272 }
2273 
2274 /*
2275  * gdth_copy_internal_data() - copy to/from a buffer onto a scsi_cmnd's
2276  * buffers, kmap_atomic() as needed.
2277  */
2278 static void gdth_copy_internal_data(gdth_ha_str *ha, Scsi_Cmnd *scp,
2279                                     char *buffer, u16 count)
2280 {
2281     u16 cpcount,i, max_sg = scsi_sg_count(scp);
2282     u16 cpsum,cpnow;
2283     struct scatterlist *sl;
2284     char *address;
2285 
2286     cpcount = min_t(u16, count, scsi_bufflen(scp));
2287 
2288     if (cpcount) {
2289         cpsum=0;
2290         scsi_for_each_sg(scp, sl, max_sg, i) {
2291             unsigned long flags;
2292             cpnow = (u16)sl->length;
2293             TRACE(("copy_internal() now %d sum %d count %d %d\n",
2294                           cpnow, cpsum, cpcount, scsi_bufflen(scp)));
2295             if (cpsum+cpnow > cpcount) 
2296                 cpnow = cpcount - cpsum;
2297             cpsum += cpnow;
2298             if (!sg_page(sl)) {
2299                 printk("GDT-HA %d: invalid sc/gt element in gdth_copy_internal_data()\n",
2300                        ha->hanum);
2301                 return;
2302             }
2303             local_irq_save(flags);
2304             address = kmap_atomic(sg_page(sl)) + sl->offset;
2305             memcpy(address, buffer, cpnow);
2306             flush_dcache_page(sg_page(sl));
2307             kunmap_atomic(address);
2308             local_irq_restore(flags);
2309             if (cpsum == cpcount)
2310                 break;
2311             buffer += cpnow;
2312         }
2313     } else if (count) {
2314         printk("GDT-HA %d: SCSI command with no buffers but data transfer expected!\n",
2315                ha->hanum);
2316         WARN_ON(1);
2317     }
2318 }
2319 
2320 static int gdth_internal_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp)
2321 {
2322     u8 t;
2323     gdth_inq_data inq;
2324     gdth_rdcap_data rdc;
2325     gdth_sense_data sd;
2326     gdth_modep_data mpd;
2327     struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
2328 
2329     t  = scp->device->id;
2330     TRACE(("gdth_internal_cache_cmd() cmd 0x%x hdrive %d\n",
2331            scp->cmnd[0],t));
2332 
2333     scp->result = DID_OK << 16;
2334     scp->sense_buffer[0] = 0;
2335 
2336     switch (scp->cmnd[0]) {
2337       case TEST_UNIT_READY:
2338       case VERIFY:
2339       case START_STOP:
2340         TRACE2(("Test/Verify/Start hdrive %d\n",t));
2341         break;
2342 
2343       case INQUIRY:
2344         TRACE2(("Inquiry hdrive %d devtype %d\n",
2345                 t,ha->hdr[t].devtype));
2346         inq.type_qual = (ha->hdr[t].devtype&4) ? TYPE_ROM:TYPE_DISK;
2347         /* you can here set all disks to removable, if you want to do
2348            a flush using the ALLOW_MEDIUM_REMOVAL command */
2349         inq.modif_rmb = 0x00;
2350         if ((ha->hdr[t].devtype & 1) ||
2351             (ha->hdr[t].cluster_type & CLUSTER_DRIVE))
2352             inq.modif_rmb = 0x80;
2353         inq.version   = 2;
2354         inq.resp_aenc = 2;
2355         inq.add_length= 32;
2356         strcpy(inq.vendor,ha->oem_name);
2357         sprintf(inq.product,"Host Drive  #%02d",t);
2358         strcpy(inq.revision,"   ");
2359         gdth_copy_internal_data(ha, scp, (char*)&inq, sizeof(gdth_inq_data));
2360         break;
2361 
2362       case REQUEST_SENSE:
2363         TRACE2(("Request sense hdrive %d\n",t));
2364         sd.errorcode = 0x70;
2365         sd.segno     = 0x00;
2366         sd.key       = NO_SENSE;
2367         sd.info      = 0;
2368         sd.add_length= 0;
2369         gdth_copy_internal_data(ha, scp, (char*)&sd, sizeof(gdth_sense_data));
2370         break;
2371 
2372       case MODE_SENSE:
2373         TRACE2(("Mode sense hdrive %d\n",t));
2374         memset((char*)&mpd,0,sizeof(gdth_modep_data));
2375         mpd.hd.data_length = sizeof(gdth_modep_data);
2376         mpd.hd.dev_par     = (ha->hdr[t].devtype&2) ? 0x80:0;
2377         mpd.hd.bd_length   = sizeof(mpd.bd);
2378         mpd.bd.block_length[0] = (SECTOR_SIZE & 0x00ff0000) >> 16;
2379         mpd.bd.block_length[1] = (SECTOR_SIZE & 0x0000ff00) >> 8;
2380         mpd.bd.block_length[2] = (SECTOR_SIZE & 0x000000ff);
2381         gdth_copy_internal_data(ha, scp, (char*)&mpd, sizeof(gdth_modep_data));
2382         break;
2383 
2384       case READ_CAPACITY:
2385         TRACE2(("Read capacity hdrive %d\n",t));
2386         if (ha->hdr[t].size > (u64)0xffffffff)
2387             rdc.last_block_no = 0xffffffff;
2388         else
2389             rdc.last_block_no = cpu_to_be32(ha->hdr[t].size-1);
2390         rdc.block_length  = cpu_to_be32(SECTOR_SIZE);
2391         gdth_copy_internal_data(ha, scp, (char*)&rdc, sizeof(gdth_rdcap_data));
2392         break;
2393 
2394       case SERVICE_ACTION_IN_16:
2395         if ((scp->cmnd[1] & 0x1f) == SAI_READ_CAPACITY_16 &&
2396             (ha->cache_feat & GDT_64BIT)) {
2397             gdth_rdcap16_data rdc16;
2398 
2399             TRACE2(("Read capacity (16) hdrive %d\n",t));
2400             rdc16.last_block_no = cpu_to_be64(ha->hdr[t].size-1);
2401             rdc16.block_length  = cpu_to_be32(SECTOR_SIZE);
2402             gdth_copy_internal_data(ha, scp, (char*)&rdc16,
2403                                                  sizeof(gdth_rdcap16_data));
2404         } else { 
2405             scp->result = DID_ABORT << 16;
2406         }
2407         break;
2408 
2409       default:
2410         TRACE2(("Internal cache cmd 0x%x unknown\n",scp->cmnd[0]));
2411         break;
2412     }
2413 
2414     if (!cmndinfo->wait_for_completion)
2415         cmndinfo->wait_for_completion++;
2416     else 
2417         return 1;
2418 
2419     return 0;
2420 }
2421 
2422 static int gdth_fill_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, u16 hdrive)
2423 {
2424     register gdth_cmd_str *cmdp;
2425     struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
2426     u32 cnt, blockcnt;
2427     u64 no, blockno;
2428     int i, cmd_index, read_write, sgcnt, mode64;
2429 
2430     cmdp = ha->pccb;
2431     TRACE(("gdth_fill_cache_cmd() cmd 0x%x cmdsize %d hdrive %d\n",
2432                  scp->cmnd[0],scp->cmd_len,hdrive));
2433 
2434     if (ha->type==GDT_EISA && ha->cmd_cnt>0) 
2435         return 0;
2436 
2437     mode64 = (ha->cache_feat & GDT_64BIT) ? TRUE : FALSE;
2438     /* test for READ_16, WRITE_16 if !mode64 ? ---
2439        not required, should not occur due to error return on 
2440        READ_CAPACITY_16 */
2441 
2442     cmdp->Service = CACHESERVICE;
2443     cmdp->RequestBuffer = scp;
2444     /* search free command index */
2445     if (!(cmd_index=gdth_get_cmd_index(ha))) {
2446         TRACE(("GDT: No free command index found\n"));
2447         return 0;
2448     }
2449     /* if it's the first command, set command semaphore */
2450     if (ha->cmd_cnt == 0)
2451         gdth_set_sema0(ha);
2452 
2453     /* fill command */
2454     read_write = 0;
2455     if (cmndinfo->OpCode != -1)
2456         cmdp->OpCode = cmndinfo->OpCode;   /* special cache cmd. */
2457     else if (scp->cmnd[0] == RESERVE) 
2458         cmdp->OpCode = GDT_RESERVE_DRV;
2459     else if (scp->cmnd[0] == RELEASE)
2460         cmdp->OpCode = GDT_RELEASE_DRV;
2461     else if (scp->cmnd[0] == ALLOW_MEDIUM_REMOVAL) {
2462         if (scp->cmnd[4] & 1)                   /* prevent ? */
2463             cmdp->OpCode = GDT_MOUNT;
2464         else if (scp->cmnd[3] & 1)              /* removable drive ? */
2465             cmdp->OpCode = GDT_UNMOUNT;
2466         else
2467             cmdp->OpCode = GDT_FLUSH;
2468     } else if (scp->cmnd[0] == WRITE_6 || scp->cmnd[0] == WRITE_10 ||
2469                scp->cmnd[0] == WRITE_12 || scp->cmnd[0] == WRITE_16
2470     ) {
2471         read_write = 1;
2472         if (gdth_write_through || ((ha->hdr[hdrive].rw_attribs & 1) && 
2473                                    (ha->cache_feat & GDT_WR_THROUGH)))
2474             cmdp->OpCode = GDT_WRITE_THR;
2475         else
2476             cmdp->OpCode = GDT_WRITE;
2477     } else {
2478         read_write = 2;
2479         cmdp->OpCode = GDT_READ;
2480     }
2481 
2482     cmdp->BoardNode = LOCALBOARD;
2483     if (mode64) {
2484         cmdp->u.cache64.DeviceNo = hdrive;
2485         cmdp->u.cache64.BlockNo  = 1;
2486         cmdp->u.cache64.sg_canz  = 0;
2487     } else {
2488         cmdp->u.cache.DeviceNo = hdrive;
2489         cmdp->u.cache.BlockNo  = 1;
2490         cmdp->u.cache.sg_canz  = 0;
2491     }
2492 
2493     if (read_write) {
2494         if (scp->cmd_len == 16) {
2495             memcpy(&no, &scp->cmnd[2], sizeof(u64));
2496             blockno = be64_to_cpu(no);
2497             memcpy(&cnt, &scp->cmnd[10], sizeof(u32));
2498             blockcnt = be32_to_cpu(cnt);
2499         } else if (scp->cmd_len == 10) {
2500             memcpy(&no, &scp->cmnd[2], sizeof(u32));
2501             blockno = be32_to_cpu(no);
2502             memcpy(&cnt, &scp->cmnd[7], sizeof(u16));
2503             blockcnt = be16_to_cpu(cnt);
2504         } else {
2505             memcpy(&no, &scp->cmnd[0], sizeof(u32));
2506             blockno = be32_to_cpu(no) & 0x001fffffUL;
2507             blockcnt= scp->cmnd[4]==0 ? 0x100 : scp->cmnd[4];
2508         }
2509         if (mode64) {
2510             cmdp->u.cache64.BlockNo = blockno;
2511             cmdp->u.cache64.BlockCnt = blockcnt;
2512         } else {
2513             cmdp->u.cache.BlockNo = (u32)blockno;
2514             cmdp->u.cache.BlockCnt = blockcnt;
2515         }
2516 
2517         if (scsi_bufflen(scp)) {
2518             cmndinfo->dma_dir = (read_write == 1 ?
2519                 PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE);   
2520             sgcnt = pci_map_sg(ha->pdev, scsi_sglist(scp), scsi_sg_count(scp),
2521                                cmndinfo->dma_dir);
2522             if (mode64) {
2523                 struct scatterlist *sl;
2524 
2525                 cmdp->u.cache64.DestAddr= (u64)-1;
2526                 cmdp->u.cache64.sg_canz = sgcnt;
2527                 scsi_for_each_sg(scp, sl, sgcnt, i) {
2528                     cmdp->u.cache64.sg_lst[i].sg_ptr = sg_dma_address(sl);
2529 #ifdef GDTH_DMA_STATISTICS
2530                     if (cmdp->u.cache64.sg_lst[i].sg_ptr > (u64)0xffffffff)
2531                         ha->dma64_cnt++;
2532                     else
2533                         ha->dma32_cnt++;
2534 #endif
2535                     cmdp->u.cache64.sg_lst[i].sg_len = sg_dma_len(sl);
2536                 }
2537             } else {
2538                 struct scatterlist *sl;
2539 
2540                 cmdp->u.cache.DestAddr= 0xffffffff;
2541                 cmdp->u.cache.sg_canz = sgcnt;
2542                 scsi_for_each_sg(scp, sl, sgcnt, i) {
2543                     cmdp->u.cache.sg_lst[i].sg_ptr = sg_dma_address(sl);
2544 #ifdef GDTH_DMA_STATISTICS
2545                     ha->dma32_cnt++;
2546 #endif
2547                     cmdp->u.cache.sg_lst[i].sg_len = sg_dma_len(sl);
2548                 }
2549             }
2550 
2551 #ifdef GDTH_STATISTICS
2552             if (max_sg < (u32)sgcnt) {
2553                 max_sg = (u32)sgcnt;
2554                 TRACE3(("GDT: max_sg = %d\n",max_sg));
2555             }
2556 #endif
2557 
2558         }
2559     }
2560     /* evaluate command size, check space */
2561     if (mode64) {
2562         TRACE(("cache cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
2563                cmdp->u.cache64.DestAddr,cmdp->u.cache64.sg_canz,
2564                cmdp->u.cache64.sg_lst[0].sg_ptr,
2565                cmdp->u.cache64.sg_lst[0].sg_len));
2566         TRACE(("cache cmd: cmd %d blockno. %d, blockcnt %d\n",
2567                cmdp->OpCode,cmdp->u.cache64.BlockNo,cmdp->u.cache64.BlockCnt));
2568         ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.cache64.sg_lst) +
2569             (u16)cmdp->u.cache64.sg_canz * sizeof(gdth_sg64_str);
2570     } else {
2571         TRACE(("cache cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
2572                cmdp->u.cache.DestAddr,cmdp->u.cache.sg_canz,
2573                cmdp->u.cache.sg_lst[0].sg_ptr,
2574                cmdp->u.cache.sg_lst[0].sg_len));
2575         TRACE(("cache cmd: cmd %d blockno. %d, blockcnt %d\n",
2576                cmdp->OpCode,cmdp->u.cache.BlockNo,cmdp->u.cache.BlockCnt));
2577         ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.cache.sg_lst) +
2578             (u16)cmdp->u.cache.sg_canz * sizeof(gdth_sg_str);
2579     }
2580     if (ha->cmd_len & 3)
2581         ha->cmd_len += (4 - (ha->cmd_len & 3));
2582 
2583     if (ha->cmd_cnt > 0) {
2584         if ((ha->cmd_offs_dpmem + ha->cmd_len + DPMEM_COMMAND_OFFSET) >
2585             ha->ic_all_size) {
2586             TRACE2(("gdth_fill_cache() DPMEM overflow\n"));
2587             ha->cmd_tab[cmd_index-2].cmnd = UNUSED_CMND;
2588             return 0;
2589         }
2590     }
2591 
2592     /* copy command */
2593     gdth_copy_command(ha);
2594     return cmd_index;
2595 }
2596 
2597 static int gdth_fill_raw_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, u8 b)
2598 {
2599     register gdth_cmd_str *cmdp;
2600     u16 i;
2601     dma_addr_t sense_paddr;
2602     int cmd_index, sgcnt, mode64;
2603     u8 t,l;
2604     struct page *page;
2605     unsigned long offset;
2606     struct gdth_cmndinfo *cmndinfo;
2607 
2608     t = scp->device->id;
2609     l = scp->device->lun;
2610     cmdp = ha->pccb;
2611     TRACE(("gdth_fill_raw_cmd() cmd 0x%x bus %d ID %d LUN %d\n",
2612            scp->cmnd[0],b,t,l));
2613 
2614     if (ha->type==GDT_EISA && ha->cmd_cnt>0) 
2615         return 0;
2616 
2617     mode64 = (ha->raw_feat & GDT_64BIT) ? TRUE : FALSE;
2618 
2619     cmdp->Service = SCSIRAWSERVICE;
2620     cmdp->RequestBuffer = scp;
2621     /* search free command index */
2622     if (!(cmd_index=gdth_get_cmd_index(ha))) {
2623         TRACE(("GDT: No free command index found\n"));
2624         return 0;
2625     }
2626     /* if it's the first command, set command semaphore */
2627     if (ha->cmd_cnt == 0)
2628         gdth_set_sema0(ha);
2629 
2630     cmndinfo = gdth_cmnd_priv(scp);
2631     /* fill command */  
2632     if (cmndinfo->OpCode != -1) {
2633         cmdp->OpCode           = cmndinfo->OpCode; /* special raw cmd. */
2634         cmdp->BoardNode        = LOCALBOARD;
2635         if (mode64) {
2636             cmdp->u.raw64.direction = (cmndinfo->phase >> 8);
2637             TRACE2(("special raw cmd 0x%x param 0x%x\n", 
2638                     cmdp->OpCode, cmdp->u.raw64.direction));
2639             /* evaluate command size */
2640             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw64.sg_lst);
2641         } else {
2642             cmdp->u.raw.direction  = (cmndinfo->phase >> 8);
2643             TRACE2(("special raw cmd 0x%x param 0x%x\n", 
2644                     cmdp->OpCode, cmdp->u.raw.direction));
2645             /* evaluate command size */
2646             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw.sg_lst);
2647         }
2648 
2649     } else {
2650         page = virt_to_page(scp->sense_buffer);
2651         offset = (unsigned long)scp->sense_buffer & ~PAGE_MASK;
2652         sense_paddr = pci_map_page(ha->pdev,page,offset,
2653                                    16,PCI_DMA_FROMDEVICE);
2654 
2655         cmndinfo->sense_paddr  = sense_paddr;
2656         cmdp->OpCode           = GDT_WRITE;             /* always */
2657         cmdp->BoardNode        = LOCALBOARD;
2658         if (mode64) { 
2659             cmdp->u.raw64.reserved   = 0;
2660             cmdp->u.raw64.mdisc_time = 0;
2661             cmdp->u.raw64.mcon_time  = 0;
2662             cmdp->u.raw64.clen       = scp->cmd_len;
2663             cmdp->u.raw64.target     = t;
2664             cmdp->u.raw64.lun        = l;
2665             cmdp->u.raw64.bus        = b;
2666             cmdp->u.raw64.priority   = 0;
2667             cmdp->u.raw64.sdlen      = scsi_bufflen(scp);
2668             cmdp->u.raw64.sense_len  = 16;
2669             cmdp->u.raw64.sense_data = sense_paddr;
2670             cmdp->u.raw64.direction  = 
2671                 gdth_direction_tab[scp->cmnd[0]]==DOU ? GDTH_DATA_OUT:GDTH_DATA_IN;
2672             memcpy(cmdp->u.raw64.cmd,scp->cmnd,16);
2673             cmdp->u.raw64.sg_ranz    = 0;
2674         } else {
2675             cmdp->u.raw.reserved   = 0;
2676             cmdp->u.raw.mdisc_time = 0;
2677             cmdp->u.raw.mcon_time  = 0;
2678             cmdp->u.raw.clen       = scp->cmd_len;
2679             cmdp->u.raw.target     = t;
2680             cmdp->u.raw.lun        = l;
2681             cmdp->u.raw.bus        = b;
2682             cmdp->u.raw.priority   = 0;
2683             cmdp->u.raw.link_p     = 0;
2684             cmdp->u.raw.sdlen      = scsi_bufflen(scp);
2685             cmdp->u.raw.sense_len  = 16;
2686             cmdp->u.raw.sense_data = sense_paddr;
2687             cmdp->u.raw.direction  = 
2688                 gdth_direction_tab[scp->cmnd[0]]==DOU ? GDTH_DATA_OUT:GDTH_DATA_IN;
2689             memcpy(cmdp->u.raw.cmd,scp->cmnd,12);
2690             cmdp->u.raw.sg_ranz    = 0;
2691         }
2692 
2693         if (scsi_bufflen(scp)) {
2694             cmndinfo->dma_dir = PCI_DMA_BIDIRECTIONAL;
2695             sgcnt = pci_map_sg(ha->pdev, scsi_sglist(scp), scsi_sg_count(scp),
2696                                cmndinfo->dma_dir);
2697             if (mode64) {
2698                 struct scatterlist *sl;
2699 
2700                 cmdp->u.raw64.sdata = (u64)-1;
2701                 cmdp->u.raw64.sg_ranz = sgcnt;
2702                 scsi_for_each_sg(scp, sl, sgcnt, i) {
2703                     cmdp->u.raw64.sg_lst[i].sg_ptr = sg_dma_address(sl);
2704 #ifdef GDTH_DMA_STATISTICS
2705                     if (cmdp->u.raw64.sg_lst[i].sg_ptr > (u64)0xffffffff)
2706                         ha->dma64_cnt++;
2707                     else
2708                         ha->dma32_cnt++;
2709 #endif
2710                     cmdp->u.raw64.sg_lst[i].sg_len = sg_dma_len(sl);
2711                 }
2712             } else {
2713                 struct scatterlist *sl;
2714 
2715                 cmdp->u.raw.sdata = 0xffffffff;
2716                 cmdp->u.raw.sg_ranz = sgcnt;
2717                 scsi_for_each_sg(scp, sl, sgcnt, i) {
2718                     cmdp->u.raw.sg_lst[i].sg_ptr = sg_dma_address(sl);
2719 #ifdef GDTH_DMA_STATISTICS
2720                     ha->dma32_cnt++;
2721 #endif
2722                     cmdp->u.raw.sg_lst[i].sg_len = sg_dma_len(sl);
2723                 }
2724             }
2725 
2726 #ifdef GDTH_STATISTICS
2727             if (max_sg < sgcnt) {
2728                 max_sg = sgcnt;
2729                 TRACE3(("GDT: max_sg = %d\n",sgcnt));
2730             }
2731 #endif
2732 
2733         }
2734         if (mode64) {
2735             TRACE(("raw cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
2736                    cmdp->u.raw64.sdata,cmdp->u.raw64.sg_ranz,
2737                    cmdp->u.raw64.sg_lst[0].sg_ptr,
2738                    cmdp->u.raw64.sg_lst[0].sg_len));
2739             /* evaluate command size */
2740             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw64.sg_lst) +
2741                 (u16)cmdp->u.raw64.sg_ranz * sizeof(gdth_sg64_str);
2742         } else {
2743             TRACE(("raw cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
2744                    cmdp->u.raw.sdata,cmdp->u.raw.sg_ranz,
2745                    cmdp->u.raw.sg_lst[0].sg_ptr,
2746                    cmdp->u.raw.sg_lst[0].sg_len));
2747             /* evaluate command size */
2748             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw.sg_lst) +
2749                 (u16)cmdp->u.raw.sg_ranz * sizeof(gdth_sg_str);
2750         }
2751     }
2752     /* check space */
2753     if (ha->cmd_len & 3)
2754         ha->cmd_len += (4 - (ha->cmd_len & 3));
2755 
2756     if (ha->cmd_cnt > 0) {
2757         if ((ha->cmd_offs_dpmem + ha->cmd_len + DPMEM_COMMAND_OFFSET) >
2758             ha->ic_all_size) {
2759             TRACE2(("gdth_fill_raw() DPMEM overflow\n"));
2760             ha->cmd_tab[cmd_index-2].cmnd = UNUSED_CMND;
2761             return 0;
2762         }
2763     }
2764 
2765     /* copy command */
2766     gdth_copy_command(ha);
2767     return cmd_index;
2768 }
2769 
2770 static int gdth_special_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp)
2771 {
2772     register gdth_cmd_str *cmdp;
2773     struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
2774     int cmd_index;
2775 
2776     cmdp= ha->pccb;
2777     TRACE2(("gdth_special_cmd(): "));
2778 
2779     if (ha->type==GDT_EISA && ha->cmd_cnt>0) 
2780         return 0;
2781 
2782     *cmdp = *cmndinfo->internal_cmd_str;
2783     cmdp->RequestBuffer = scp;
2784 
2785     /* search free command index */
2786     if (!(cmd_index=gdth_get_cmd_index(ha))) {
2787         TRACE(("GDT: No free command index found\n"));
2788         return 0;
2789     }
2790 
2791     /* if it's the first command, set command semaphore */
2792     if (ha->cmd_cnt == 0)
2793        gdth_set_sema0(ha);
2794 
2795     /* evaluate command size, check space */
2796     if (cmdp->OpCode == GDT_IOCTL) {
2797         TRACE2(("IOCTL\n"));
2798         ha->cmd_len = 
2799             GDTOFFSOF(gdth_cmd_str,u.ioctl.p_param) + sizeof(u64);
2800     } else if (cmdp->Service == CACHESERVICE) {
2801         TRACE2(("cache command %d\n",cmdp->OpCode));
2802         if (ha->cache_feat & GDT_64BIT)
2803             ha->cmd_len = 
2804                 GDTOFFSOF(gdth_cmd_str,u.cache64.sg_lst) + sizeof(gdth_sg64_str);
2805         else
2806             ha->cmd_len = 
2807                 GDTOFFSOF(gdth_cmd_str,u.cache.sg_lst) + sizeof(gdth_sg_str);
2808     } else if (cmdp->Service == SCSIRAWSERVICE) {
2809         TRACE2(("raw command %d\n",cmdp->OpCode));
2810         if (ha->raw_feat & GDT_64BIT)
2811             ha->cmd_len = 
2812                 GDTOFFSOF(gdth_cmd_str,u.raw64.sg_lst) + sizeof(gdth_sg64_str);
2813         else
2814             ha->cmd_len = 
2815                 GDTOFFSOF(gdth_cmd_str,u.raw.sg_lst) + sizeof(gdth_sg_str);
2816     }
2817 
2818     if (ha->cmd_len & 3)
2819         ha->cmd_len += (4 - (ha->cmd_len & 3));
2820 
2821     if (ha->cmd_cnt > 0) {
2822         if ((ha->cmd_offs_dpmem + ha->cmd_len + DPMEM_COMMAND_OFFSET) >
2823             ha->ic_all_size) {
2824             TRACE2(("gdth_special_cmd() DPMEM overflow\n"));
2825             ha->cmd_tab[cmd_index-2].cmnd = UNUSED_CMND;
2826             return 0;
2827         }
2828     }
2829 
2830     /* copy command */
2831     gdth_copy_command(ha);
2832     return cmd_index;
2833 }    
2834 
2835 
2836 /* Controller event handling functions */
2837 static gdth_evt_str *gdth_store_event(gdth_ha_str *ha, u16 source, 
2838                                       u16 idx, gdth_evt_data *evt)
2839 {
2840     gdth_evt_str *e;
2841 
2842     /* no GDTH_LOCK_HA() ! */
2843     TRACE2(("gdth_store_event() source %d idx %d\n", source, idx));
2844     if (source == 0)                        /* no source -> no event */
2845         return NULL;
2846 
2847     if (ebuffer[elastidx].event_source == source &&
2848         ebuffer[elastidx].event_idx == idx &&
2849         ((evt->size != 0 && ebuffer[elastidx].event_data.size != 0 &&
2850             !memcmp((char *)&ebuffer[elastidx].event_data.eu,
2851             (char *)&evt->eu, evt->size)) ||
2852         (evt->size == 0 && ebuffer[elastidx].event_data.size == 0 &&
2853             !strcmp((char *)&ebuffer[elastidx].event_data.event_string,
2854             (char *)&evt->event_string)))) { 
2855         e = &ebuffer[elastidx];
2856         e->last_stamp = (u32)ktime_get_real_seconds();
2857         ++e->same_count;
2858     } else {
2859         if (ebuffer[elastidx].event_source != 0) {  /* entry not free ? */
2860             ++elastidx;
2861             if (elastidx == MAX_EVENTS)
2862                 elastidx = 0;
2863             if (elastidx == eoldidx) {              /* reached mark ? */
2864                 ++eoldidx;
2865                 if (eoldidx == MAX_EVENTS)
2866                     eoldidx = 0;
2867             }
2868         }
2869         e = &ebuffer[elastidx];
2870         e->event_source = source;
2871         e->event_idx = idx;
2872         e->first_stamp = e->last_stamp = (u32)ktime_get_real_seconds();
2873         e->same_count = 1;
2874         e->event_data = *evt;
2875         e->application = 0;
2876     }
2877     return e;
2878 }
2879 
2880 static int gdth_read_event(gdth_ha_str *ha, int handle, gdth_evt_str *estr)
2881 {
2882     gdth_evt_str *e;
2883     int eindex;
2884     unsigned long flags;
2885 
2886     TRACE2(("gdth_read_event() handle %d\n", handle));
2887     spin_lock_irqsave(&ha->smp_lock, flags);
2888     if (handle == -1)
2889         eindex = eoldidx;
2890     else
2891         eindex = handle;
2892     estr->event_source = 0;
2893 
2894     if (eindex < 0 || eindex >= MAX_EVENTS) {
2895         spin_unlock_irqrestore(&ha->smp_lock, flags);
2896         return eindex;
2897     }
2898     e = &ebuffer[eindex];
2899     if (e->event_source != 0) {
2900         if (eindex != elastidx) {
2901             if (++eindex == MAX_EVENTS)
2902                 eindex = 0;
2903         } else {
2904             eindex = -1;
2905         }
2906         memcpy(estr, e, sizeof(gdth_evt_str));
2907     }
2908     spin_unlock_irqrestore(&ha->smp_lock, flags);
2909     return eindex;
2910 }
2911 
2912 static void gdth_readapp_event(gdth_ha_str *ha,
2913                                u8 application, gdth_evt_str *estr)
2914 {
2915     gdth_evt_str *e;
2916     int eindex;
2917     unsigned long flags;
2918     u8 found = FALSE;
2919 
2920     TRACE2(("gdth_readapp_event() app. %d\n", application));
2921     spin_lock_irqsave(&ha->smp_lock, flags);
2922     eindex = eoldidx;
2923     for (;;) {
2924         e = &ebuffer[eindex];
2925         if (e->event_source == 0)
2926             break;
2927         if ((e->application & application) == 0) {
2928             e->application |= application;
2929             found = TRUE;
2930             break;
2931         }
2932         if (eindex == elastidx)
2933             break;
2934         if (++eindex == MAX_EVENTS)
2935             eindex = 0;
2936     }
2937     if (found)
2938         memcpy(estr, e, sizeof(gdth_evt_str));
2939     else
2940         estr->event_source = 0;
2941     spin_unlock_irqrestore(&ha->smp_lock, flags);
2942 }
2943 
2944 static void gdth_clear_events(void)
2945 {
2946     TRACE(("gdth_clear_events()"));
2947 
2948     eoldidx = elastidx = 0;
2949     ebuffer[0].event_source = 0;
2950 }
2951 
2952 
2953 /* SCSI interface functions */
2954 
2955 static irqreturn_t __gdth_interrupt(gdth_ha_str *ha,
2956                                     int gdth_from_wait, int* pIndex)
2957 {
2958     gdt6m_dpram_str __iomem *dp6m_ptr = NULL;
2959     gdt6_dpram_str __iomem *dp6_ptr;
2960     gdt2_dpram_str __iomem *dp2_ptr;
2961     Scsi_Cmnd *scp;
2962     int rval, i;
2963     u8 IStatus;
2964     u16 Service;
2965     unsigned long flags = 0;
2966 #ifdef INT_COAL
2967     int coalesced = FALSE;
2968     int next = FALSE;
2969     gdth_coal_status *pcs = NULL;
2970     int act_int_coal = 0;       
2971 #endif
2972 
2973     TRACE(("gdth_interrupt() IRQ %d\n", ha->irq));
2974 
2975     /* if polling and not from gdth_wait() -> return */
2976     if (gdth_polling) {
2977         if (!gdth_from_wait) {
2978             return IRQ_HANDLED;
2979         }
2980     }
2981 
2982     if (!gdth_polling)
2983         spin_lock_irqsave(&ha->smp_lock, flags);
2984 
2985     /* search controller */
2986     IStatus = gdth_get_status(ha);
2987     if (IStatus == 0) {
2988         /* spurious interrupt */
2989         if (!gdth_polling)
2990             spin_unlock_irqrestore(&ha->smp_lock, flags);
2991         return IRQ_HANDLED;
2992     }
2993 
2994 #ifdef GDTH_STATISTICS
2995     ++act_ints;
2996 #endif
2997 
2998 #ifdef INT_COAL
2999     /* See if the fw is returning coalesced status */
3000     if (IStatus == COALINDEX) {
3001         /* Coalesced status.  Setup the initial status 
3002            buffer pointer and flags */
3003         pcs = ha->coal_stat;
3004         coalesced = TRUE;        
3005         next = TRUE;
3006     }
3007 
3008     do {
3009         if (coalesced) {
3010             /* For coalesced requests all status
3011                information is found in the status buffer */
3012             IStatus = (u8)(pcs->status & 0xff);
3013         }
3014 #endif
3015     
3016         if (ha->type == GDT_EISA) {
3017             if (IStatus & 0x80) {                       /* error flag */
3018                 IStatus &= ~0x80;
3019                 ha->status = inw(ha->bmic + MAILBOXREG+8);
3020                 TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3021             } else                                      /* no error */
3022                 ha->status = S_OK;
3023             ha->info = inl(ha->bmic + MAILBOXREG+12);
3024             ha->service = inw(ha->bmic + MAILBOXREG+10);
3025             ha->info2 = inl(ha->bmic + MAILBOXREG+4);
3026 
3027             outb(0xff, ha->bmic + EDOORREG);    /* acknowledge interrupt */
3028             outb(0x00, ha->bmic + SEMA1REG);    /* reset status semaphore */
3029         } else if (ha->type == GDT_ISA) {
3030             dp2_ptr = ha->brd;
3031             if (IStatus & 0x80) {                       /* error flag */
3032                 IStatus &= ~0x80;
3033                 ha->status = readw(&dp2_ptr->u.ic.Status);
3034                 TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3035             } else                                      /* no error */
3036                 ha->status = S_OK;
3037             ha->info = readl(&dp2_ptr->u.ic.Info[0]);
3038             ha->service = readw(&dp2_ptr->u.ic.Service);
3039             ha->info2 = readl(&dp2_ptr->u.ic.Info[1]);
3040 
3041             writeb(0xff, &dp2_ptr->io.irqdel); /* acknowledge interrupt */
3042             writeb(0, &dp2_ptr->u.ic.Cmd_Index);/* reset command index */
3043             writeb(0, &dp2_ptr->io.Sema1);     /* reset status semaphore */
3044         } else if (ha->type == GDT_PCI) {
3045             dp6_ptr = ha->brd;
3046             if (IStatus & 0x80) {                       /* error flag */
3047                 IStatus &= ~0x80;
3048                 ha->status = readw(&dp6_ptr->u.ic.Status);
3049                 TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3050             } else                                      /* no error */
3051                 ha->status = S_OK;
3052             ha->info = readl(&dp6_ptr->u.ic.Info[0]);
3053             ha->service = readw(&dp6_ptr->u.ic.Service);
3054             ha->info2 = readl(&dp6_ptr->u.ic.Info[1]);
3055 
3056             writeb(0xff, &dp6_ptr->io.irqdel); /* acknowledge interrupt */
3057             writeb(0, &dp6_ptr->u.ic.Cmd_Index);/* reset command index */
3058             writeb(0, &dp6_ptr->io.Sema1);     /* reset status semaphore */
3059         } else if (ha->type == GDT_PCINEW) {
3060             if (IStatus & 0x80) {                       /* error flag */
3061                 IStatus &= ~0x80;
3062                 ha->status = inw(PTR2USHORT(&ha->plx->status));
3063                 TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3064             } else
3065                 ha->status = S_OK;
3066             ha->info = inl(PTR2USHORT(&ha->plx->info[0]));
3067             ha->service = inw(PTR2USHORT(&ha->plx->service));
3068             ha->info2 = inl(PTR2USHORT(&ha->plx->info[1]));
3069 
3070             outb(0xff, PTR2USHORT(&ha->plx->edoor_reg)); 
3071             outb(0x00, PTR2USHORT(&ha->plx->sema1_reg)); 
3072         } else if (ha->type == GDT_PCIMPR) {
3073             dp6m_ptr = ha->brd;
3074             if (IStatus & 0x80) {                       /* error flag */
3075                 IStatus &= ~0x80;
3076 #ifdef INT_COAL
3077                 if (coalesced)
3078                     ha->status = pcs->ext_status & 0xffff;
3079                 else 
3080 #endif
3081                     ha->status = readw(&dp6m_ptr->i960r.status);
3082                 TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3083             } else                                      /* no error */
3084                 ha->status = S_OK;
3085 #ifdef INT_COAL
3086             /* get information */
3087             if (coalesced) {    
3088                 ha->info = pcs->info0;
3089                 ha->info2 = pcs->info1;
3090                 ha->service = (pcs->ext_status >> 16) & 0xffff;
3091             } else
3092 #endif
3093             {
3094                 ha->info = readl(&dp6m_ptr->i960r.info[0]);
3095                 ha->service = readw(&dp6m_ptr->i960r.service);
3096                 ha->info2 = readl(&dp6m_ptr->i960r.info[1]);
3097             }
3098             /* event string */
3099             if (IStatus == ASYNCINDEX) {
3100                 if (ha->service != SCREENSERVICE &&
3101                     (ha->fw_vers & 0xff) >= 0x1a) {
3102                     ha->dvr.severity = readb
3103                         (&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.severity);
3104                     for (i = 0; i < 256; ++i) {
3105                         ha->dvr.event_string[i] = readb
3106                             (&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.evt_str[i]);
3107                         if (ha->dvr.event_string[i] == 0)
3108                             break;
3109                     }
3110                 }
3111             }
3112 #ifdef INT_COAL
3113             /* Make sure that non coalesced interrupts get cleared
3114                before being handled by gdth_async_event/gdth_sync_event */
3115             if (!coalesced)
3116 #endif                          
3117             {
3118                 writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
3119                 writeb(0, &dp6m_ptr->i960r.sema1_reg);
3120             }
3121         } else {
3122             TRACE2(("gdth_interrupt() unknown controller type\n"));
3123             if (!gdth_polling)
3124                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3125             return IRQ_HANDLED;
3126         }
3127 
3128         TRACE(("gdth_interrupt() index %d stat %d info %d\n",
3129                IStatus,ha->status,ha->info));
3130 
3131         if (gdth_from_wait) {
3132             *pIndex = (int)IStatus;
3133         }
3134 
3135         if (IStatus == ASYNCINDEX) {
3136             TRACE2(("gdth_interrupt() async. event\n"));
3137             gdth_async_event(ha);
3138             if (!gdth_polling)
3139                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3140             gdth_next(ha);
3141             return IRQ_HANDLED;
3142         } 
3143 
3144         if (IStatus == SPEZINDEX) {
3145             TRACE2(("Service unknown or not initialized !\n"));
3146             ha->dvr.size = sizeof(ha->dvr.eu.driver);
3147             ha->dvr.eu.driver.ionode = ha->hanum;
3148             gdth_store_event(ha, ES_DRIVER, 4, &ha->dvr);
3149             if (!gdth_polling)
3150                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3151             return IRQ_HANDLED;
3152         }
3153         scp     = ha->cmd_tab[IStatus-2].cmnd;
3154         Service = ha->cmd_tab[IStatus-2].service;
3155         ha->cmd_tab[IStatus-2].cmnd = UNUSED_CMND;
3156         if (scp == UNUSED_CMND) {
3157             TRACE2(("gdth_interrupt() index to unused command (%d)\n",IStatus));
3158             ha->dvr.size = sizeof(ha->dvr.eu.driver);
3159             ha->dvr.eu.driver.ionode = ha->hanum;
3160             ha->dvr.eu.driver.index = IStatus;
3161             gdth_store_event(ha, ES_DRIVER, 1, &ha->dvr);
3162             if (!gdth_polling)
3163                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3164             return IRQ_HANDLED;
3165         }
3166         if (scp == INTERNAL_CMND) {
3167             TRACE(("gdth_interrupt() answer to internal command\n"));
3168             if (!gdth_polling)
3169                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3170             return IRQ_HANDLED;
3171         }
3172 
3173         TRACE(("gdth_interrupt() sync. status\n"));
3174         rval = gdth_sync_event(ha,Service,IStatus,scp);
3175         if (!gdth_polling)
3176             spin_unlock_irqrestore(&ha->smp_lock, flags);
3177         if (rval == 2) {
3178             gdth_putq(ha, scp, gdth_cmnd_priv(scp)->priority);
3179         } else if (rval == 1) {
3180             gdth_scsi_done(scp);
3181         }
3182 
3183 #ifdef INT_COAL
3184         if (coalesced) {
3185             /* go to the next status in the status buffer */
3186             ++pcs;
3187 #ifdef GDTH_STATISTICS
3188             ++act_int_coal;
3189             if (act_int_coal > max_int_coal) {
3190                 max_int_coal = act_int_coal;
3191                 printk("GDT: max_int_coal = %d\n",(u16)max_int_coal);
3192             }
3193 #endif      
3194             /* see if there is another status */
3195             if (pcs->status == 0)    
3196                 /* Stop the coalesce loop */
3197                 next = FALSE;
3198         }
3199     } while (next);
3200 
3201     /* coalescing only for new GDT_PCIMPR controllers available */      
3202     if (ha->type == GDT_PCIMPR && coalesced) {
3203         writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
3204         writeb(0, &dp6m_ptr->i960r.sema1_reg);
3205     }
3206 #endif
3207 
3208     gdth_next(ha);
3209     return IRQ_HANDLED;
3210 }
3211 
3212 static irqreturn_t gdth_interrupt(int irq, void *dev_id)
3213 {
3214         gdth_ha_str *ha = dev_id;
3215 
3216         return __gdth_interrupt(ha, false, NULL);
3217 }
3218 
3219 static int gdth_sync_event(gdth_ha_str *ha, int service, u8 index,
3220                                                               Scsi_Cmnd *scp)
3221 {
3222     gdth_msg_str *msg;
3223     gdth_cmd_str *cmdp;
3224     u8 b, t;
3225     struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
3226 
3227     cmdp = ha->pccb;
3228     TRACE(("gdth_sync_event() serv %d status %d\n",
3229            service,ha->status));
3230 
3231     if (service == SCREENSERVICE) {
3232         msg  = ha->pmsg;
3233         TRACE(("len: %d, answer: %d, ext: %d, alen: %d\n",
3234                msg->msg_len,msg->msg_answer,msg->msg_ext,msg->msg_alen));
3235         if (msg->msg_len > MSGLEN+1)
3236             msg->msg_len = MSGLEN+1;
3237         if (msg->msg_len)
3238             if (!(msg->msg_answer && msg->msg_ext)) {
3239                 msg->msg_text[msg->msg_len] = '\0';
3240                 printk("%s",msg->msg_text);
3241             }
3242 
3243         if (msg->msg_ext && !msg->msg_answer) {
3244             while (gdth_test_busy(ha))
3245                 gdth_delay(0);
3246             cmdp->Service       = SCREENSERVICE;
3247             cmdp->RequestBuffer = SCREEN_CMND;
3248             gdth_get_cmd_index(ha);
3249             gdth_set_sema0(ha);
3250             cmdp->OpCode        = GDT_READ;
3251             cmdp->BoardNode     = LOCALBOARD;
3252             cmdp->u.screen.reserved  = 0;
3253             cmdp->u.screen.su.msg.msg_handle= msg->msg_handle;
3254             cmdp->u.screen.su.msg.msg_addr  = ha->msg_phys;
3255             ha->cmd_offs_dpmem = 0;
3256             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.screen.su.msg.msg_addr) 
3257                 + sizeof(u64);
3258             ha->cmd_cnt = 0;
3259             gdth_copy_command(ha);
3260             gdth_release_event(ha);
3261             return 0;
3262         }
3263 
3264         if (msg->msg_answer && msg->msg_alen) {
3265             /* default answers (getchar() not possible) */
3266             if (msg->msg_alen == 1) {
3267                 msg->msg_alen = 0;
3268                 msg->msg_len = 1;
3269                 msg->msg_text[0] = 0;
3270             } else {
3271                 msg->msg_alen -= 2;
3272                 msg->msg_len = 2;
3273                 msg->msg_text[0] = 1;
3274                 msg->msg_text[1] = 0;
3275             }
3276             msg->msg_ext    = 0;
3277             msg->msg_answer = 0;
3278             while (gdth_test_busy(ha))
3279                 gdth_delay(0);
3280             cmdp->Service       = SCREENSERVICE;
3281             cmdp->RequestBuffer = SCREEN_CMND;
3282             gdth_get_cmd_index(ha);
3283             gdth_set_sema0(ha);
3284             cmdp->OpCode        = GDT_WRITE;
3285             cmdp->BoardNode     = LOCALBOARD;
3286             cmdp->u.screen.reserved  = 0;
3287             cmdp->u.screen.su.msg.msg_handle= msg->msg_handle;
3288             cmdp->u.screen.su.msg.msg_addr  = ha->msg_phys;
3289             ha->cmd_offs_dpmem = 0;
3290             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.screen.su.msg.msg_addr) 
3291                 + sizeof(u64);
3292             ha->cmd_cnt = 0;
3293             gdth_copy_command(ha);
3294             gdth_release_event(ha);
3295             return 0;
3296         }
3297         printk("\n");
3298 
3299     } else {
3300         b = scp->device->channel;
3301         t = scp->device->id;
3302         if (cmndinfo->OpCode == -1 && b != ha->virt_bus) {
3303             ha->raw[BUS_L2P(ha,b)].io_cnt[t]--;
3304         }
3305         /* cache or raw service */
3306         if (ha->status == S_BSY) {
3307             TRACE2(("Controller busy -> retry !\n"));
3308             if (cmndinfo->OpCode == GDT_MOUNT)
3309                 cmndinfo->OpCode = GDT_CLUST_INFO;
3310             /* retry */
3311             return 2;
3312         }
3313         if (scsi_bufflen(scp))
3314             pci_unmap_sg(ha->pdev, scsi_sglist(scp), scsi_sg_count(scp),
3315                          cmndinfo->dma_dir);
3316 
3317         if (cmndinfo->sense_paddr)
3318             pci_unmap_page(ha->pdev, cmndinfo->sense_paddr, 16,
3319                                                            PCI_DMA_FROMDEVICE);
3320 
3321         if (ha->status == S_OK) {
3322             cmndinfo->status = S_OK;
3323             cmndinfo->info = ha->info;
3324             if (cmndinfo->OpCode != -1) {
3325                 TRACE2(("gdth_sync_event(): special cmd 0x%x OK\n",
3326                         cmndinfo->OpCode));
3327                 /* special commands GDT_CLUST_INFO/GDT_MOUNT ? */
3328                 if (cmndinfo->OpCode == GDT_CLUST_INFO) {
3329                     ha->hdr[t].cluster_type = (u8)ha->info;
3330                     if (!(ha->hdr[t].cluster_type & 
3331                         CLUSTER_MOUNTED)) {
3332                         /* NOT MOUNTED -> MOUNT */
3333                         cmndinfo->OpCode = GDT_MOUNT;
3334                         if (ha->hdr[t].cluster_type & 
3335                             CLUSTER_RESERVED) {
3336                             /* cluster drive RESERVED (on the other node) */
3337                             cmndinfo->phase = -2;      /* reservation conflict */
3338                         }
3339                     } else {
3340                         cmndinfo->OpCode = -1;
3341                     }
3342                 } else {
3343                     if (cmndinfo->OpCode == GDT_MOUNT) {
3344                         ha->hdr[t].cluster_type |= CLUSTER_MOUNTED;
3345                         ha->hdr[t].media_changed = TRUE;
3346                     } else if (cmndinfo->OpCode == GDT_UNMOUNT) {
3347                         ha->hdr[t].cluster_type &= ~CLUSTER_MOUNTED;
3348                         ha->hdr[t].media_changed = TRUE;
3349                     } 
3350                     cmndinfo->OpCode = -1;
3351                 }
3352                 /* retry */
3353                 cmndinfo->priority = HIGH_PRI;
3354                 return 2;
3355             } else {
3356                 /* RESERVE/RELEASE ? */
3357                 if (scp->cmnd[0] == RESERVE) {
3358                     ha->hdr[t].cluster_type |= CLUSTER_RESERVED;
3359                 } else if (scp->cmnd[0] == RELEASE) {
3360                     ha->hdr[t].cluster_type &= ~CLUSTER_RESERVED;
3361                 }           
3362                 scp->result = DID_OK << 16;
3363                 scp->sense_buffer[0] = 0;
3364             }
3365         } else {
3366             cmndinfo->status = ha->status;
3367             cmndinfo->info = ha->info;
3368 
3369             if (cmndinfo->OpCode != -1) {
3370                 TRACE2(("gdth_sync_event(): special cmd 0x%x error 0x%x\n",
3371                         cmndinfo->OpCode, ha->status));
3372                 if (cmndinfo->OpCode == GDT_SCAN_START ||
3373                     cmndinfo->OpCode == GDT_SCAN_END) {
3374                     cmndinfo->OpCode = -1;
3375                     /* retry */
3376                     cmndinfo->priority = HIGH_PRI;
3377                     return 2;
3378                 }
3379                 memset((char*)scp->sense_buffer,0,16);
3380                 scp->sense_buffer[0] = 0x70;
3381                 scp->sense_buffer[2] = NOT_READY;
3382                 scp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
3383             } else if (service == CACHESERVICE) {
3384                 if (ha->status == S_CACHE_UNKNOWN &&
3385                     (ha->hdr[t].cluster_type & 
3386                      CLUSTER_RESERVE_STATE) == CLUSTER_RESERVE_STATE) {
3387                     /* bus reset -> force GDT_CLUST_INFO */
3388                     ha->hdr[t].cluster_type &= ~CLUSTER_RESERVED;
3389                 }
3390                 memset((char*)scp->sense_buffer,0,16);
3391                 if (ha->status == (u16)S_CACHE_RESERV) {
3392                     scp->result = (DID_OK << 16) | (RESERVATION_CONFLICT << 1);
3393                 } else {
3394                     scp->sense_buffer[0] = 0x70;
3395                     scp->sense_buffer[2] = NOT_READY;
3396                     scp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
3397                 }
3398                 if (!cmndinfo->internal_command) {
3399                     ha->dvr.size = sizeof(ha->dvr.eu.sync);
3400                     ha->dvr.eu.sync.ionode  = ha->hanum;
3401                     ha->dvr.eu.sync.service = service;
3402                     ha->dvr.eu.sync.status  = ha->status;
3403                     ha->dvr.eu.sync.info    = ha->info;
3404                     ha->dvr.eu.sync.hostdrive = t;
3405                     if (ha->status >= 0x8000)
3406                         gdth_store_event(ha, ES_SYNC, 0, &ha->dvr);
3407                     else
3408                         gdth_store_event(ha, ES_SYNC, service, &ha->dvr);
3409                 }
3410             } else {
3411                 /* sense buffer filled from controller firmware (DMA) */
3412                 if (ha->status != S_RAW_SCSI || ha->info >= 0x100) {
3413                     scp->result = DID_BAD_TARGET << 16;
3414                 } else {
3415                     scp->result = (DID_OK << 16) | ha->info;
3416                 }
3417             }
3418         }
3419         if (!cmndinfo->wait_for_completion)
3420             cmndinfo->wait_for_completion++;
3421         else 
3422             return 1;
3423     }
3424 
3425     return 0;
3426 }
3427 
3428 static char *async_cache_tab[] = {
3429 /* 0*/  "\011\000\002\002\002\004\002\006\004"
3430         "GDT HA %u, service %u, async. status %u/%lu unknown",
3431 /* 1*/  "\011\000\002\002\002\004\002\006\004"
3432         "GDT HA %u, service %u, async. status %u/%lu unknown",
3433 /* 2*/  "\005\000\002\006\004"
3434         "GDT HA %u, Host Drive %lu not ready",
3435 /* 3*/  "\005\000\002\006\004"
3436         "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",
3437 /* 4*/  "\005\000\002\006\004"
3438         "GDT HA %u, mirror update on Host Drive %lu failed",
3439 /* 5*/  "\005\000\002\006\004"
3440         "GDT HA %u, Mirror Drive %lu failed",
3441 /* 6*/  "\005\000\002\006\004"
3442         "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",
3443 /* 7*/  "\005\000\002\006\004"
3444         "GDT HA %u, Host Drive %lu write protected",
3445 /* 8*/  "\005\000\002\006\004"
3446         "GDT HA %u, media changed in Host Drive %lu",
3447 /* 9*/  "\005\000\002\006\004"
3448         "GDT HA %u, Host Drive %lu is offline",
3449 /*10*/  "\005\000\002\006\004"
3450         "GDT HA %u, media change of Mirror Drive %lu",
3451 /*11*/  "\005\000\002\006\004"
3452         "GDT HA %u, Mirror Drive %lu is write protected",
3453 /*12*/  "\005\000\002\006\004"
3454         "GDT HA %u, general error on Host Drive %lu. Please check the devices of this drive!",
3455 /*13*/  "\007\000\002\006\002\010\002"
3456         "GDT HA %u, Array Drive %u: Cache Drive %u failed",
3457 /*14*/  "\005\000\002\006\002"
3458         "GDT HA %u, Array Drive %u: FAIL state entered",
3459 /*15*/  "\005\000\002\006\002"
3460         "GDT HA %u, Array Drive %u: error",
3461 /*16*/  "\007\000\002\006\002\010\002"
3462         "GDT HA %u, Array Drive %u: failed drive replaced by Cache Drive %u",
3463 /*17*/  "\005\000\002\006\002"
3464         "GDT HA %u, Array Drive %u: parity build failed",
3465 /*18*/  "\005\000\002\006\002"
3466         "GDT HA %u, Array Drive %u: drive rebuild failed",
3467 /*19*/  "\005\000\002\010\002"
3468         "GDT HA %u, Test of Hot Fix %u failed",
3469 /*20*/  "\005\000\002\006\002"
3470         "GDT HA %u, Array Drive %u: drive build finished successfully",
3471 /*21*/  "\005\000\002\006\002"
3472         "GDT HA %u, Array Drive %u: drive rebuild finished successfully",
3473 /*22*/  "\007\000\002\006\002\010\002"
3474         "GDT HA %u, Array Drive %u: Hot Fix %u activated",
3475 /*23*/  "\005\000\002\006\002"
3476         "GDT HA %u, Host Drive %u: processing of i/o aborted due to serious drive error",
3477 /*24*/  "\005\000\002\010\002"
3478         "GDT HA %u, mirror update on Cache Drive %u completed",
3479 /*25*/  "\005\000\002\010\002"
3480         "GDT HA %u, mirror update on Cache Drive %lu failed",
3481 /*26*/  "\005\000\002\006\002"
3482         "GDT HA %u, Array Drive %u: drive rebuild started",
3483 /*27*/  "\005\000\002\012\001"
3484         "GDT HA %u, Fault bus %u: SHELF OK detected",
3485 /*28*/  "\005\000\002\012\001"
3486         "GDT HA %u, Fault bus %u: SHELF not OK detected",
3487 /*29*/  "\007\000\002\012\001\013\001"
3488         "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug started",
3489 /*30*/  "\007\000\002\012\001\013\001"
3490         "GDT HA %u, Fault bus %u, ID %u: new disk detected",
3491 /*31*/  "\007\000\002\012\001\013\001"
3492         "GDT HA %u, Fault bus %u, ID %u: old disk detected",
3493 /*32*/  "\007\000\002\012\001\013\001"
3494         "GDT HA %u, Fault bus %u, ID %u: plugging an active disk is invalid",
3495 /*33*/  "\007\000\002\012\001\013\001"
3496         "GDT HA %u, Fault bus %u, ID %u: invalid device detected",
3497 /*34*/  "\011\000\002\012\001\013\001\006\004"
3498         "GDT HA %u, Fault bus %u, ID %u: insufficient disk capacity (%lu MB required)",
3499 /*35*/  "\007\000\002\012\001\013\001"
3500         "GDT HA %u, Fault bus %u, ID %u: disk write protected",
3501 /*36*/  "\007\000\002\012\001\013\001"
3502         "GDT HA %u, Fault bus %u, ID %u: disk not available",
3503 /*37*/  "\007\000\002\012\001\006\004"
3504         "GDT HA %u, Fault bus %u: swap detected (%lu)",
3505 /*38*/  "\007\000\002\012\001\013\001"
3506         "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug finished successfully",
3507 /*39*/  "\007\000\002\012\001\013\001"
3508         "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug aborted due to user Hot Plug",
3509 /*40*/  "\007\000\002\012\001\013\001"
3510         "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug aborted",
3511 /*41*/  "\007\000\002\012\001\013\001"
3512         "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug for Hot Fix started",
3513 /*42*/  "\005\000\002\006\002"
3514         "GDT HA %u, Array Drive %u: drive build started",
3515 /*43*/  "\003\000\002"
3516         "GDT HA %u, DRAM parity error detected",
3517 /*44*/  "\005\000\002\006\002"
3518         "GDT HA %u, Mirror Drive %u: update started",
3519 /*45*/  "\007\000\002\006\002\010\002"
3520         "GDT HA %u, Mirror Drive %u: Hot Fix %u activated",
3521 /*46*/  "\005\000\002\006\002"
3522         "GDT HA %u, Array Drive %u: no matching Pool Hot Fix Drive available",
3523 /*47*/  "\005\000\002\006\002"
3524         "GDT HA %u, Array Drive %u: Pool Hot Fix Drive available",
3525 /*48*/  "\005\000\002\006\002"
3526         "GDT HA %u, Mirror Drive %u: no matching Pool Hot Fix Drive available",
3527 /*49*/  "\005\000\002\006\002"
3528         "GDT HA %u, Mirror Drive %u: Pool Hot Fix Drive available",
3529 /*50*/  "\007\000\002\012\001\013\001"
3530         "GDT HA %u, SCSI bus %u, ID %u: IGNORE_WIDE_RESIDUE message received",
3531 /*51*/  "\005\000\002\006\002"
3532         "GDT HA %u, Array Drive %u: expand started",
3533 /*52*/  "\005\000\002\006\002"
3534         "GDT HA %u, Array Drive %u: expand finished successfully",
3535 /*53*/  "\005\000\002\006\002"
3536         "GDT HA %u, Array Drive %u: expand failed",
3537 /*54*/  "\003\000\002"
3538         "GDT HA %u, CPU temperature critical",
3539 /*55*/  "\003\000\002"
3540         "GDT HA %u, CPU temperature OK",
3541 /*56*/  "\005\000\002\006\004"
3542         "GDT HA %u, Host drive %lu created",
3543 /*57*/  "\005\000\002\006\002"
3544         "GDT HA %u, Array Drive %u: expand restarted",
3545 /*58*/  "\005\000\002\006\002"
3546         "GDT HA %u, Array Drive %u: expand stopped",
3547 /*59*/  "\005\000\002\010\002"
3548         "GDT HA %u, Mirror Drive %u: drive build quited",
3549 /*60*/  "\005\000\002\006\002"
3550         "GDT HA %u, Array Drive %u: parity build quited",
3551 /*61*/  "\005\000\002\006\002"
3552         "GDT HA %u, Array Drive %u: drive rebuild quited",
3553 /*62*/  "\005\000\002\006\002"
3554         "GDT HA %u, Array Drive %u: parity verify started",
3555 /*63*/  "\005\000\002\006\002"
3556         "GDT HA %u, Array Drive %u: parity verify done",
3557 /*64*/  "\005\000\002\006\002"
3558         "GDT HA %u, Array Drive %u: parity verify failed",
3559 /*65*/  "\005\000\002\006\002"
3560         "GDT HA %u, Array Drive %u: parity error detected",
3561 /*66*/  "\005\000\002\006\002"
3562         "GDT HA %u, Array Drive %u: parity verify quited",
3563 /*67*/  "\005\000\002\006\002"
3564         "GDT HA %u, Host Drive %u reserved",
3565 /*68*/  "\005\000\002\006\002"
3566         "GDT HA %u, Host Drive %u mounted and released",
3567 /*69*/  "\005\000\002\006\002"
3568         "GDT HA %u, Host Drive %u released",
3569 /*70*/  "\003\000\002"
3570         "GDT HA %u, DRAM error detected and corrected with ECC",
3571 /*71*/  "\003\000\002"
3572         "GDT HA %u, Uncorrectable DRAM error detected with ECC",
3573 /*72*/  "\011\000\002\012\001\013\001\014\001"
3574         "GDT HA %u, SCSI bus %u, ID %u, LUN %u: reassigning block",
3575 /*73*/  "\005\000\002\006\002"
3576         "GDT HA %u, Host drive %u resetted locally",
3577 /*74*/  "\005\000\002\006\002"
3578         "GDT HA %u, Host drive %u resetted remotely",
3579 /*75*/  "\003\000\002"
3580         "GDT HA %u, async. status 75 unknown",
3581 };
3582 
3583 
3584 static int gdth_async_event(gdth_ha_str *ha)
3585 {
3586     gdth_cmd_str *cmdp;
3587     int cmd_index;
3588 
3589     cmdp= ha->pccb;
3590     TRACE2(("gdth_async_event() ha %d serv %d\n",
3591             ha->hanum, ha->service));
3592 
3593     if (ha->service == SCREENSERVICE) {
3594         if (ha->status == MSG_REQUEST) {
3595             while (gdth_test_busy(ha))
3596                 gdth_delay(0);
3597             cmdp->Service       = SCREENSERVICE;
3598             cmdp->RequestBuffer = SCREEN_CMND;
3599             cmd_index = gdth_get_cmd_index(ha);
3600             gdth_set_sema0(ha);
3601             cmdp->OpCode        = GDT_READ;
3602             cmdp->BoardNode     = LOCALBOARD;
3603             cmdp->u.screen.reserved  = 0;
3604             cmdp->u.screen.su.msg.msg_handle= MSG_INV_HANDLE;
3605             cmdp->u.screen.su.msg.msg_addr  = ha->msg_phys;
3606             ha->cmd_offs_dpmem = 0;
3607             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.screen.su.msg.msg_addr) 
3608                 + sizeof(u64);
3609             ha->cmd_cnt = 0;
3610             gdth_copy_command(ha);
3611             if (ha->type == GDT_EISA)
3612                 printk("[EISA slot %d] ",(u16)ha->brd_phys);
3613             else if (ha->type == GDT_ISA)
3614                 printk("[DPMEM 0x%4X] ",(u16)ha->brd_phys);
3615             else 
3616                 printk("[PCI %d/%d] ",(u16)(ha->brd_phys>>8),
3617                        (u16)((ha->brd_phys>>3)&0x1f));
3618             gdth_release_event(ha);
3619         }
3620 
3621     } else {
3622         if (ha->type == GDT_PCIMPR && 
3623             (ha->fw_vers & 0xff) >= 0x1a) {
3624             ha->dvr.size = 0;
3625             ha->dvr.eu.async.ionode = ha->hanum;
3626             ha->dvr.eu.async.status  = ha->status;
3627             /* severity and event_string already set! */
3628         } else {        
3629             ha->dvr.size = sizeof(ha->dvr.eu.async);
3630             ha->dvr.eu.async.ionode   = ha->hanum;
3631             ha->dvr.eu.async.service = ha->service;
3632             ha->dvr.eu.async.status  = ha->status;
3633             ha->dvr.eu.async.info    = ha->info;
3634             *(u32 *)ha->dvr.eu.async.scsi_coord  = ha->info2;
3635         }
3636         gdth_store_event( ha, ES_ASYNC, ha->service, &ha->dvr );
3637         gdth_log_event( &ha->dvr, NULL );
3638     
3639         /* new host drive from expand? */
3640         if (ha->service == CACHESERVICE && ha->status == 56) {
3641             TRACE2(("gdth_async_event(): new host drive %d created\n",
3642                     (u16)ha->info));
3643             /* gdth_analyse_hdrive(hanum, (u16)ha->info); */
3644         }   
3645     }
3646     return 1;
3647 }
3648 
3649 static void gdth_log_event(gdth_evt_data *dvr, char *buffer)
3650 {
3651     gdth_stackframe stack;
3652     char *f = NULL;
3653     int i,j;
3654 
3655     TRACE2(("gdth_log_event()\n"));
3656     if (dvr->size == 0) {
3657         if (buffer == NULL) {
3658             printk("Adapter %d: %s\n",dvr->eu.async.ionode,dvr->event_string); 
3659         } else {
3660             sprintf(buffer,"Adapter %d: %s\n",
3661                 dvr->eu.async.ionode,dvr->event_string); 
3662         }
3663     } else if (dvr->eu.async.service == CACHESERVICE && 
3664         INDEX_OK(dvr->eu.async.status, async_cache_tab)) {
3665         TRACE2(("GDT: Async. event cache service, event no.: %d\n",
3666                 dvr->eu.async.status));
3667         
3668         f = async_cache_tab[dvr->eu.async.status];
3669         
3670         /* i: parameter to push, j: stack element to fill */
3671         for (j=0,i=1; i < f[0]; i+=2) {
3672             switch (f[i+1]) {
3673               case 4:
3674                 stack.b[j++] = *(u32*)&dvr->eu.stream[(int)f[i]];
3675                 break;
3676               case 2:
3677                 stack.b[j++] = *(u16*)&dvr->eu.stream[(int)f[i]];
3678                 break;
3679               case 1:
3680                 stack.b[j++] = *(u8*)&dvr->eu.stream[(int)f[i]];
3681                 break;
3682               default:
3683                 break;
3684             }
3685         }
3686         
3687         if (buffer == NULL) {
3688             printk(&f[(int)f[0]],stack); 
3689             printk("\n");
3690         } else {
3691             sprintf(buffer,&f[(int)f[0]],stack); 
3692         }
3693 
3694     } else {
3695         if (buffer == NULL) {
3696             printk("GDT HA %u, Unknown async. event service %d event no. %d\n",
3697                    dvr->eu.async.ionode,dvr->eu.async.service,dvr->eu.async.status);
3698         } else {
3699             sprintf(buffer,"GDT HA %u, Unknown async. event service %d event no. %d",
3700                     dvr->eu.async.ionode,dvr->eu.async.service,dvr->eu.async.status);
3701         }
3702     }
3703 }
3704 
3705 #ifdef GDTH_STATISTICS
3706 static u8       gdth_timer_running;
3707 
3708 static void gdth_timeout(unsigned long data)
3709 {
3710     u32 i;
3711     Scsi_Cmnd *nscp;
3712     gdth_ha_str *ha;
3713     unsigned long flags;
3714 
3715     if(unlikely(list_empty(&gdth_instances))) {
3716             gdth_timer_running = 0;
3717             return;
3718     }
3719 
3720     ha = list_first_entry(&gdth_instances, gdth_ha_str, list);
3721     spin_lock_irqsave(&ha->smp_lock, flags);
3722 
3723     for (act_stats=0,i=0; i<GDTH_MAXCMDS; ++i) 
3724         if (ha->cmd_tab[i].cmnd != UNUSED_CMND)
3725             ++act_stats;
3726 
3727     for (act_rq=0,nscp=ha->req_first; nscp; nscp=(Scsi_Cmnd*)nscp->SCp.ptr)
3728         ++act_rq;
3729 
3730     TRACE2(("gdth_to(): ints %d, ios %d, act_stats %d, act_rq %d\n",
3731             act_ints, act_ios, act_stats, act_rq));
3732     act_ints = act_ios = 0;
3733 
3734     gdth_timer.expires = jiffies + 30 * HZ;
3735     add_timer(&gdth_timer);
3736     spin_unlock_irqrestore(&ha->smp_lock, flags);
3737 }
3738 
3739 static void gdth_timer_init(void)
3740 {
3741         if (gdth_timer_running)
3742                 return;
3743         gdth_timer_running = 1;
3744         TRACE2(("gdth_detect(): Initializing timer !\n"));
3745         gdth_timer.expires = jiffies + HZ;
3746         gdth_timer.data = 0L;
3747         gdth_timer.function = gdth_timeout;
3748         add_timer(&gdth_timer);
3749 }
3750 #else
3751 static inline void gdth_timer_init(void)
3752 {
3753 }
3754 #endif
3755 
3756 static void __init internal_setup(char *str,int *ints)
3757 {
3758     int i, argc;
3759     char *cur_str, *argv;
3760 
3761     TRACE2(("internal_setup() str %s ints[0] %d\n", 
3762             str ? str:"NULL", ints ? ints[0]:0));
3763 
3764     /* read irq[] from ints[] */
3765     if (ints) {
3766         argc = ints[0];
3767         if (argc > 0) {
3768             if (argc > MAXHA)
3769                 argc = MAXHA;
3770             for (i = 0; i < argc; ++i)
3771                 irq[i] = ints[i+1];
3772         }
3773     }
3774 
3775     /* analyse string */
3776     argv = str;
3777     while (argv && (cur_str = strchr(argv, ':'))) {
3778         int val = 0, c = *++cur_str;
3779         
3780         if (c == 'n' || c == 'N')
3781             val = 0;
3782         else if (c == 'y' || c == 'Y')
3783             val = 1;
3784         else
3785             val = (int)simple_strtoul(cur_str, NULL, 0);
3786 
3787         if (!strncmp(argv, "disable:", 8))
3788             disable = val;
3789         else if (!strncmp(argv, "reserve_mode:", 13))
3790             reserve_mode = val;
3791         else if (!strncmp(argv, "reverse_scan:", 13))
3792             reverse_scan = val;
3793         else if (!strncmp(argv, "hdr_channel:", 12))
3794             hdr_channel = val;
3795         else if (!strncmp(argv, "max_ids:", 8))
3796             max_ids = val;
3797         else if (!strncmp(argv, "rescan:", 7))
3798             rescan = val;
3799         else if (!strncmp(argv, "shared_access:", 14))
3800             shared_access = val;
3801         else if (!strncmp(argv, "probe_eisa_isa:", 15))
3802             probe_eisa_isa = val;
3803         else if (!strncmp(argv, "reserve_list:", 13)) {
3804             reserve_list[0] = val;
3805             for (i = 1; i < MAX_RES_ARGS; i++) {
3806                 cur_str = strchr(cur_str, ',');
3807                 if (!cur_str)
3808                     break;
3809                 if (!isdigit((int)*++cur_str)) {
3810                     --cur_str;          
3811                     break;
3812                 }
3813                 reserve_list[i] = 
3814                     (int)simple_strtoul(cur_str, NULL, 0);
3815             }
3816             if (!cur_str)
3817                 break;
3818             argv = ++cur_str;
3819             continue;
3820         }
3821 
3822         if ((argv = strchr(argv, ',')))
3823             ++argv;
3824     }
3825 }
3826 
3827 int __init option_setup(char *str)
3828 {
3829     int ints[MAXHA];
3830     char *cur = str;
3831     int i = 1;
3832 
3833     TRACE2(("option_setup() str %s\n", str ? str:"NULL")); 
3834 
3835     while (cur && isdigit(*cur) && i < MAXHA) {
3836         ints[i++] = simple_strtoul(cur, NULL, 0);
3837         if ((cur = strchr(cur, ',')) != NULL) cur++;
3838     }
3839 
3840     ints[0] = i - 1;
3841     internal_setup(cur, ints);
3842     return 1;
3843 }
3844 
3845 static const char *gdth_ctr_name(gdth_ha_str *ha)
3846 {
3847     TRACE2(("gdth_ctr_name()\n"));
3848 
3849     if (ha->type == GDT_EISA) {
3850         switch (ha->stype) {
3851           case GDT3_ID:
3852             return("GDT3000/3020");
3853           case GDT3A_ID:
3854             return("GDT3000A/3020A/3050A");
3855           case GDT3B_ID:
3856             return("GDT3000B/3010A");
3857         }
3858     } else if (ha->type == GDT_ISA) {
3859         return("GDT2000/2020");
3860     } else if (ha->type == GDT_PCI) {
3861         switch (ha->pdev->device) {
3862           case PCI_DEVICE_ID_VORTEX_GDT60x0:
3863             return("GDT6000/6020/6050");
3864           case PCI_DEVICE_ID_VORTEX_GDT6000B:
3865             return("GDT6000B/6010");
3866         }
3867     } 
3868     /* new controllers (GDT_PCINEW, GDT_PCIMPR, ..) use board_info IOCTL! */
3869 
3870     return("");
3871 }
3872 
3873 static const char *gdth_info(struct Scsi_Host *shp)
3874 {
3875     gdth_ha_str *ha = shost_priv(shp);
3876 
3877     TRACE2(("gdth_info()\n"));
3878     return ((const char *)ha->binfo.type_string);
3879 }
3880 
3881 static enum blk_eh_timer_return gdth_timed_out(struct scsi_cmnd *scp)
3882 {
3883         gdth_ha_str *ha = shost_priv(scp->device->host);
3884         struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
3885         u8 b, t;
3886         unsigned long flags;
3887         enum blk_eh_timer_return retval = BLK_EH_NOT_HANDLED;
3888 
3889         TRACE(("%s() cmd 0x%x\n", scp->cmnd[0], __func__));
3890         b = scp->device->channel;
3891         t = scp->device->id;
3892 
3893         /*
3894          * We don't really honor the command timeout, but we try to
3895          * honor 6 times of the actual command timeout! So reset the
3896          * timer if this is less than 6th timeout on this command!
3897          */
3898         if (++cmndinfo->timeout_count < 6)
3899                 retval = BLK_EH_RESET_TIMER;
3900 
3901         /* Reset the timeout if it is locked IO */
3902         spin_lock_irqsave(&ha->smp_lock, flags);
3903         if ((b != ha->virt_bus && ha->raw[BUS_L2P(ha, b)].lock) ||
3904             (b == ha->virt_bus && t < MAX_HDRIVES && ha->hdr[t].lock)) {
3905                 TRACE2(("%s(): locked IO, reset timeout\n", __func__));
3906                 retval = BLK_EH_RESET_TIMER;
3907         }
3908         spin_unlock_irqrestore(&ha->smp_lock, flags);
3909 
3910         return retval;
3911 }
3912 
3913 
3914 static int gdth_eh_bus_reset(Scsi_Cmnd *scp)
3915 {
3916     gdth_ha_str *ha = shost_priv(scp->device->host);
3917     int i;
3918     unsigned long flags;
3919     Scsi_Cmnd *cmnd;
3920     u8 b;
3921 
3922     TRACE2(("gdth_eh_bus_reset()\n"));
3923 
3924     b = scp->device->channel;
3925 
3926     /* clear command tab */
3927     spin_lock_irqsave(&ha->smp_lock, flags);
3928     for (i = 0; i < GDTH_MAXCMDS; ++i) {
3929         cmnd = ha->cmd_tab[i].cmnd;
3930         if (!SPECIAL_SCP(cmnd) && cmnd->device->channel == b)
3931             ha->cmd_tab[i].cmnd = UNUSED_CMND;
3932     }
3933     spin_unlock_irqrestore(&ha->smp_lock, flags);
3934 
3935     if (b == ha->virt_bus) {
3936         /* host drives */
3937         for (i = 0; i < MAX_HDRIVES; ++i) {
3938             if (ha->hdr[i].present) {
3939                 spin_lock_irqsave(&ha->smp_lock, flags);
3940                 gdth_polling = TRUE;
3941                 while (gdth_test_busy(ha))
3942                     gdth_delay(0);
3943                 if (gdth_internal_cmd(ha, CACHESERVICE,
3944                                       GDT_CLUST_RESET, i, 0, 0))
3945                     ha->hdr[i].cluster_type &= ~CLUSTER_RESERVED;
3946                 gdth_polling = FALSE;
3947                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3948             }
3949         }
3950     } else {
3951         /* raw devices */
3952         spin_lock_irqsave(&ha->smp_lock, flags);
3953         for (i = 0; i < MAXID; ++i)
3954             ha->raw[BUS_L2P(ha,b)].io_cnt[i] = 0;
3955         gdth_polling = TRUE;
3956         while (gdth_test_busy(ha))
3957             gdth_delay(0);
3958         gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_RESET_BUS,
3959                           BUS_L2P(ha,b), 0, 0);
3960         gdth_polling = FALSE;
3961         spin_unlock_irqrestore(&ha->smp_lock, flags);
3962     }
3963     return SUCCESS;
3964 }
3965 
3966 static int gdth_bios_param(struct scsi_device *sdev,struct block_device *bdev,sector_t cap,int *ip)
3967 {
3968     u8 b, t;
3969     gdth_ha_str *ha = shost_priv(sdev->host);
3970     struct scsi_device *sd;
3971     unsigned capacity;
3972 
3973     sd = sdev;
3974     capacity = cap;
3975     b = sd->channel;
3976     t = sd->id;
3977     TRACE2(("gdth_bios_param() ha %d bus %d target %d\n", ha->hanum, b, t));
3978 
3979     if (b != ha->virt_bus || ha->hdr[t].heads == 0) {
3980         /* raw device or host drive without mapping information */
3981         TRACE2(("Evaluate mapping\n"));
3982         gdth_eval_mapping(capacity,&ip[2],&ip[0],&ip[1]);
3983     } else {
3984         ip[0] = ha->hdr[t].heads;
3985         ip[1] = ha->hdr[t].secs;
3986         ip[2] = capacity / ip[0] / ip[1];
3987     }
3988 
3989     TRACE2(("gdth_bios_param(): %d heads, %d secs, %d cyls\n",
3990             ip[0],ip[1],ip[2]));
3991     return 0;
3992 }
3993 
3994 
3995 static int gdth_queuecommand_lck(struct scsi_cmnd *scp,
3996                                 void (*done)(struct scsi_cmnd *))
3997 {
3998     gdth_ha_str *ha = shost_priv(scp->device->host);
3999     struct gdth_cmndinfo *cmndinfo;
4000 
4001     TRACE(("gdth_queuecommand() cmd 0x%x\n", scp->cmnd[0]));
4002 
4003     cmndinfo = gdth_get_cmndinfo(ha);
4004     BUG_ON(!cmndinfo);
4005 
4006     scp->scsi_done = done;
4007     cmndinfo->timeout_count = 0;
4008     cmndinfo->priority = DEFAULT_PRI;
4009 
4010     return __gdth_queuecommand(ha, scp, cmndinfo);
4011 }
4012 
4013 static DEF_SCSI_QCMD(gdth_queuecommand)
4014 
4015 static int __gdth_queuecommand(gdth_ha_str *ha, struct scsi_cmnd *scp,
4016                                 struct gdth_cmndinfo *cmndinfo)
4017 {
4018     scp->host_scribble = (unsigned char *)cmndinfo;
4019     cmndinfo->wait_for_completion = 1;
4020     cmndinfo->phase = -1;
4021     cmndinfo->OpCode = -1;
4022 
4023 #ifdef GDTH_STATISTICS
4024     ++act_ios;
4025 #endif
4026 
4027     gdth_putq(ha, scp, cmndinfo->priority);
4028     gdth_next(ha);
4029     return 0;
4030 }
4031 
4032 
4033 static int gdth_open(struct inode *inode, struct file *filep)
4034 {
4035     gdth_ha_str *ha;
4036 
4037     mutex_lock(&gdth_mutex);
4038     list_for_each_entry(ha, &gdth_instances, list) {
4039         if (!ha->sdev)
4040             ha->sdev = scsi_get_host_dev(ha->shost);
4041     }
4042     mutex_unlock(&gdth_mutex);
4043 
4044     TRACE(("gdth_open()\n"));
4045     return 0;
4046 }
4047 
4048 static int gdth_close(struct inode *inode, struct file *filep)
4049 {
4050     TRACE(("gdth_close()\n"));
4051     return 0;
4052 }
4053 
4054 static int ioc_event(void __user *arg)
4055 {
4056     gdth_ioctl_event evt;
4057     gdth_ha_str *ha;
4058     unsigned long flags;
4059 
4060     if (copy_from_user(&evt, arg, sizeof(gdth_ioctl_event)))
4061         return -EFAULT;
4062     ha = gdth_find_ha(evt.ionode);
4063     if (!ha)
4064         return -EFAULT;
4065 
4066     if (evt.erase == 0xff) {
4067         if (evt.event.event_source == ES_TEST)
4068             evt.event.event_data.size=sizeof(evt.event.event_data.eu.test); 
4069         else if (evt.event.event_source == ES_DRIVER)
4070             evt.event.event_data.size=sizeof(evt.event.event_data.eu.driver); 
4071         else if (evt.event.event_source == ES_SYNC)
4072             evt.event.event_data.size=sizeof(evt.event.event_data.eu.sync); 
4073         else
4074             evt.event.event_data.size=sizeof(evt.event.event_data.eu.async);
4075         spin_lock_irqsave(&ha->smp_lock, flags);
4076         gdth_store_event(ha, evt.event.event_source, evt.event.event_idx,
4077                          &evt.event.event_data);
4078         spin_unlock_irqrestore(&ha->smp_lock, flags);
4079     } else if (evt.erase == 0xfe) {
4080         gdth_clear_events();
4081     } else if (evt.erase == 0) {
4082         evt.handle = gdth_read_event(ha, evt.handle, &evt.event);
4083     } else {
4084         gdth_readapp_event(ha, evt.erase, &evt.event);
4085     }     
4086     if (copy_to_user(arg, &evt, sizeof(gdth_ioctl_event)))
4087         return -EFAULT;
4088     return 0;
4089 }
4090 
4091 static int ioc_lockdrv(void __user *arg)
4092 {
4093     gdth_ioctl_lockdrv ldrv;
4094     u8 i, j;
4095     unsigned long flags;
4096     gdth_ha_str *ha;
4097 
4098     if (copy_from_user(&ldrv, arg, sizeof(gdth_ioctl_lockdrv)))
4099         return -EFAULT;
4100     ha = gdth_find_ha(ldrv.ionode);
4101     if (!ha)
4102         return -EFAULT;
4103 
4104     for (i = 0; i < ldrv.drive_cnt && i < MAX_HDRIVES; ++i) {
4105         j = ldrv.drives[i];
4106         if (j >= MAX_HDRIVES || !ha->hdr[j].present)
4107             continue;
4108         if (ldrv.lock) {
4109             spin_lock_irqsave(&ha->smp_lock, flags);
4110             ha->hdr[j].lock = 1;
4111             spin_unlock_irqrestore(&ha->smp_lock, flags);
4112             gdth_wait_completion(ha, ha->bus_cnt, j);
4113         } else {
4114             spin_lock_irqsave(&ha->smp_lock, flags);
4115             ha->hdr[j].lock = 0;
4116             spin_unlock_irqrestore(&ha->smp_lock, flags);
4117             gdth_next(ha);
4118         }
4119     } 
4120     return 0;
4121 }
4122 
4123 static int ioc_resetdrv(void __user *arg, char *cmnd)
4124 {
4125     gdth_ioctl_reset res;
4126     gdth_cmd_str cmd;
4127     gdth_ha_str *ha;
4128     int rval;
4129 
4130     if (copy_from_user(&res, arg, sizeof(gdth_ioctl_reset)) ||
4131         res.number >= MAX_HDRIVES)
4132         return -EFAULT;
4133     ha = gdth_find_ha(res.ionode);
4134     if (!ha)
4135         return -EFAULT;
4136 
4137     if (!ha->hdr[res.number].present)
4138         return 0;
4139     memset(&cmd, 0, sizeof(gdth_cmd_str));
4140     cmd.Service = CACHESERVICE;
4141     cmd.OpCode = GDT_CLUST_RESET;
4142     if (ha->cache_feat & GDT_64BIT)
4143         cmd.u.cache64.DeviceNo = res.number;
4144     else
4145         cmd.u.cache.DeviceNo = res.number;
4146 
4147     rval = __gdth_execute(ha->sdev, &cmd, cmnd, 30, NULL);
4148     if (rval < 0)
4149         return rval;
4150     res.status = rval;
4151 
4152     if (copy_to_user(arg, &res, sizeof(gdth_ioctl_reset)))
4153         return -EFAULT;
4154     return 0;
4155 }
4156 
4157 static int ioc_general(void __user *arg, char *cmnd)
4158 {
4159     gdth_ioctl_general gen;
4160     char *buf = NULL;
4161     u64 paddr; 
4162     gdth_ha_str *ha;
4163     int rval;
4164 
4165     if (copy_from_user(&gen, arg, sizeof(gdth_ioctl_general)))
4166         return -EFAULT;
4167     ha = gdth_find_ha(gen.ionode);
4168     if (!ha)
4169         return -EFAULT;
4170 
4171     if (gen.data_len > INT_MAX)
4172         return -EINVAL;
4173     if (gen.sense_len > INT_MAX)
4174         return -EINVAL;
4175     if (gen.data_len + gen.sense_len > INT_MAX)
4176         return -EINVAL;
4177 
4178     if (gen.data_len + gen.sense_len != 0) {
4179         if (!(buf = gdth_ioctl_alloc(ha, gen.data_len + gen.sense_len,
4180                                      FALSE, &paddr)))
4181             return -EFAULT;
4182         if (copy_from_user(buf, arg + sizeof(gdth_ioctl_general),  
4183                            gen.data_len + gen.sense_len)) {
4184             gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
4185             return -EFAULT;
4186         }
4187 
4188         if (gen.command.OpCode == GDT_IOCTL) {
4189             gen.command.u.ioctl.p_param = paddr;
4190         } else if (gen.command.Service == CACHESERVICE) {
4191             if (ha->cache_feat & GDT_64BIT) {
4192                 /* copy elements from 32-bit IOCTL structure */
4193                 gen.command.u.cache64.BlockCnt = gen.command.u.cache.BlockCnt;
4194                 gen.command.u.cache64.BlockNo = gen.command.u.cache.BlockNo;
4195                 gen.command.u.cache64.DeviceNo = gen.command.u.cache.DeviceNo;
4196                 /* addresses */
4197                 if (ha->cache_feat & SCATTER_GATHER) {
4198                     gen.command.u.cache64.DestAddr = (u64)-1;
4199                     gen.command.u.cache64.sg_canz = 1;
4200                     gen.command.u.cache64.sg_lst[0].sg_ptr = paddr;
4201                     gen.command.u.cache64.sg_lst[0].sg_len = gen.data_len;
4202                     gen.command.u.cache64.sg_lst[1].sg_len = 0;
4203                 } else {
4204                     gen.command.u.cache64.DestAddr = paddr;
4205                     gen.command.u.cache64.sg_canz = 0;
4206                 }
4207             } else {
4208                 if (ha->cache_feat & SCATTER_GATHER) {
4209                     gen.command.u.cache.DestAddr = 0xffffffff;
4210                     gen.command.u.cache.sg_canz = 1;
4211                     gen.command.u.cache.sg_lst[0].sg_ptr = (u32)paddr;
4212                     gen.command.u.cache.sg_lst[0].sg_len = gen.data_len;
4213                     gen.command.u.cache.sg_lst[1].sg_len = 0;
4214                 } else {
4215                     gen.command.u.cache.DestAddr = paddr;
4216                     gen.command.u.cache.sg_canz = 0;
4217                 }
4218             }
4219         } else if (gen.command.Service == SCSIRAWSERVICE) {
4220             if (ha->raw_feat & GDT_64BIT) {
4221                 /* copy elements from 32-bit IOCTL structure */
4222                 char cmd[16];
4223                 gen.command.u.raw64.sense_len = gen.command.u.raw.sense_len;
4224                 gen.command.u.raw64.bus = gen.command.u.raw.bus;
4225                 gen.command.u.raw64.lun = gen.command.u.raw.lun;
4226                 gen.command.u.raw64.target = gen.command.u.raw.target;
4227                 memcpy(cmd, gen.command.u.raw.cmd, 16);
4228                 memcpy(gen.command.u.raw64.cmd, cmd, 16);
4229                 gen.command.u.raw64.clen = gen.command.u.raw.clen;
4230                 gen.command.u.raw64.sdlen = gen.command.u.raw.sdlen;
4231                 gen.command.u.raw64.direction = gen.command.u.raw.direction;
4232                 /* addresses */
4233                 if (ha->raw_feat & SCATTER_GATHER) {
4234                     gen.command.u.raw64.sdata = (u64)-1;
4235                     gen.command.u.raw64.sg_ranz = 1;
4236                     gen.command.u.raw64.sg_lst[0].sg_ptr = paddr;
4237                     gen.command.u.raw64.sg_lst[0].sg_len = gen.data_len;
4238                     gen.command.u.raw64.sg_lst[1].sg_len = 0;
4239                 } else {
4240                     gen.command.u.raw64.sdata = paddr;
4241                     gen.command.u.raw64.sg_ranz = 0;
4242                 }
4243                 gen.command.u.raw64.sense_data = paddr + gen.data_len;
4244             } else {
4245                 if (ha->raw_feat & SCATTER_GATHER) {
4246                     gen.command.u.raw.sdata = 0xffffffff;
4247                     gen.command.u.raw.sg_ranz = 1;
4248                     gen.command.u.raw.sg_lst[0].sg_ptr = (u32)paddr;
4249                     gen.command.u.raw.sg_lst[0].sg_len = gen.data_len;
4250                     gen.command.u.raw.sg_lst[1].sg_len = 0;
4251                 } else {
4252                     gen.command.u.raw.sdata = paddr;
4253                     gen.command.u.raw.sg_ranz = 0;
4254                 }
4255                 gen.command.u.raw.sense_data = (u32)paddr + gen.data_len;
4256             }
4257         } else {
4258             gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
4259             return -EFAULT;
4260         }
4261     }
4262 
4263     rval = __gdth_execute(ha->sdev, &gen.command, cmnd, gen.timeout, &gen.info);
4264     if (rval < 0) {
4265         gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
4266         return rval;
4267     }
4268     gen.status = rval;
4269 
4270     if (copy_to_user(arg + sizeof(gdth_ioctl_general), buf, 
4271                      gen.data_len + gen.sense_len)) {
4272         gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
4273         return -EFAULT; 
4274     } 
4275     if (copy_to_user(arg, &gen, 
4276         sizeof(gdth_ioctl_general) - sizeof(gdth_cmd_str))) {
4277         gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
4278         return -EFAULT;
4279     }
4280     gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
4281     return 0;
4282 }
4283  
4284 static int ioc_hdrlist(void __user *arg, char *cmnd)
4285 {
4286     gdth_ioctl_rescan *rsc;
4287     gdth_cmd_str *cmd;
4288     gdth_ha_str *ha;
4289     u8 i;
4290     int rc = -ENOMEM;
4291     u32 cluster_type = 0;
4292 
4293     rsc = kmalloc(sizeof(*rsc), GFP_KERNEL);
4294     cmd = kmalloc(sizeof(*cmd), GFP_KERNEL);
4295     if (!rsc || !cmd)
4296         goto free_fail;
4297 
4298     if (copy_from_user(rsc, arg, sizeof(gdth_ioctl_rescan)) ||
4299         (NULL == (ha = gdth_find_ha(rsc->ionode)))) {
4300         rc = -EFAULT;
4301         goto free_fail;
4302     }
4303     memset(cmd, 0, sizeof(gdth_cmd_str));
4304    
4305     for (i = 0; i < MAX_HDRIVES; ++i) { 
4306         if (!ha->hdr[i].present) {
4307             rsc->hdr_list[i].bus = 0xff; 
4308             continue;
4309         } 
4310         rsc->hdr_list[i].bus = ha->virt_bus;
4311         rsc->hdr_list[i].target = i;
4312         rsc->hdr_list[i].lun = 0;
4313         rsc->hdr_list[i].cluster_type = ha->hdr[i].cluster_type;
4314         if (ha->hdr[i].cluster_type & CLUSTER_DRIVE) { 
4315             cmd->Service = CACHESERVICE;
4316             cmd->OpCode = GDT_CLUST_INFO;
4317             if (ha->cache_feat & GDT_64BIT)
4318                 cmd->u.cache64.DeviceNo = i;
4319             else
4320                 cmd->u.cache.DeviceNo = i;
4321             if (__gdth_execute(ha->sdev, cmd, cmnd, 30, &cluster_type) == S_OK)
4322                 rsc->hdr_list[i].cluster_type = cluster_type;
4323         }
4324     } 
4325 
4326     if (copy_to_user(arg, rsc, sizeof(gdth_ioctl_rescan)))
4327         rc = -EFAULT;
4328     else
4329         rc = 0;
4330 
4331 free_fail:
4332     kfree(rsc);
4333     kfree(cmd);
4334     return rc;
4335 }
4336 
4337 static int ioc_rescan(void __user *arg, char *cmnd)
4338 {
4339     gdth_ioctl_rescan *rsc;
4340     gdth_cmd_str *cmd;
4341     u16 i, status, hdr_cnt;
4342     u32 info;
4343     int cyls, hds, secs;
4344     int rc = -ENOMEM;
4345     unsigned long flags;
4346     gdth_ha_str *ha; 
4347 
4348     rsc = kmalloc(sizeof(*rsc), GFP_KERNEL);
4349     cmd = kmalloc(sizeof(*cmd), GFP_KERNEL);
4350     if (!cmd || !rsc)
4351         goto free_fail;
4352 
4353     if (copy_from_user(rsc, arg, sizeof(gdth_ioctl_rescan)) ||
4354         (NULL == (ha = gdth_find_ha(rsc->ionode)))) {
4355         rc = -EFAULT;
4356         goto free_fail;
4357     }
4358     memset(cmd, 0, sizeof(gdth_cmd_str));
4359 
4360     if (rsc->flag == 0) {
4361         /* old method: re-init. cache service */
4362         cmd->Service = CACHESERVICE;
4363         if (ha->cache_feat & GDT_64BIT) {
4364             cmd->OpCode = GDT_X_INIT_HOST;
4365             cmd->u.cache64.DeviceNo = LINUX_OS;
4366         } else {
4367             cmd->OpCode = GDT_INIT;
4368             cmd->u.cache.DeviceNo = LINUX_OS;
4369         }
4370 
4371         status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
4372         i = 0;
4373         hdr_cnt = (status == S_OK ? (u16)info : 0);
4374     } else {
4375         i = rsc->hdr_no;
4376         hdr_cnt = i + 1;
4377     }
4378 
4379     for (; i < hdr_cnt && i < MAX_HDRIVES; ++i) {
4380         cmd->Service = CACHESERVICE;
4381         cmd->OpCode = GDT_INFO;
4382         if (ha->cache_feat & GDT_64BIT) 
4383             cmd->u.cache64.DeviceNo = i;
4384         else 
4385             cmd->u.cache.DeviceNo = i;
4386 
4387         status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
4388 
4389         spin_lock_irqsave(&ha->smp_lock, flags);
4390         rsc->hdr_list[i].bus = ha->virt_bus;
4391         rsc->hdr_list[i].target = i;
4392         rsc->hdr_list[i].lun = 0;
4393         if (status != S_OK) {
4394             ha->hdr[i].present = FALSE;
4395         } else {
4396             ha->hdr[i].present = TRUE;
4397             ha->hdr[i].size = info;
4398             /* evaluate mapping */
4399             ha->hdr[i].size &= ~SECS32;
4400             gdth_eval_mapping(ha->hdr[i].size,&cyls,&hds,&secs); 
4401             ha->hdr[i].heads = hds;
4402             ha->hdr[i].secs = secs;
4403             /* round size */
4404             ha->hdr[i].size = cyls * hds * secs;
4405         }
4406         spin_unlock_irqrestore(&ha->smp_lock, flags);
4407         if (status != S_OK)
4408             continue; 
4409         
4410         /* extended info, if GDT_64BIT, for drives > 2 TB */
4411         /* but we need ha->info2, not yet stored in scp->SCp */
4412 
4413         /* devtype, cluster info, R/W attribs */
4414         cmd->Service = CACHESERVICE;
4415         cmd->OpCode = GDT_DEVTYPE;
4416         if (ha->cache_feat & GDT_64BIT) 
4417             cmd->u.cache64.DeviceNo = i;
4418         else
4419             cmd->u.cache.DeviceNo = i;
4420 
4421         status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
4422 
4423         spin_lock_irqsave(&ha->smp_lock, flags);
4424         ha->hdr[i].devtype = (status == S_OK ? (u16)info : 0);
4425         spin_unlock_irqrestore(&ha->smp_lock, flags);
4426 
4427         cmd->Service = CACHESERVICE;
4428         cmd->OpCode = GDT_CLUST_INFO;
4429         if (ha->cache_feat & GDT_64BIT) 
4430             cmd->u.cache64.DeviceNo = i;
4431         else
4432             cmd->u.cache.DeviceNo = i;
4433 
4434         status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
4435 
4436         spin_lock_irqsave(&ha->smp_lock, flags);
4437         ha->hdr[i].cluster_type = 
4438             ((status == S_OK && !shared_access) ? (u16)info : 0);
4439         spin_unlock_irqrestore(&ha->smp_lock, flags);
4440         rsc->hdr_list[i].cluster_type = ha->hdr[i].cluster_type;
4441 
4442         cmd->Service = CACHESERVICE;
4443         cmd->OpCode = GDT_RW_ATTRIBS;
4444         if (ha->cache_feat & GDT_64BIT) 
4445             cmd->u.cache64.DeviceNo = i;
4446         else
4447             cmd->u.cache.DeviceNo = i;
4448 
4449         status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
4450 
4451         spin_lock_irqsave(&ha->smp_lock, flags);
4452         ha->hdr[i].rw_attribs = (status == S_OK ? (u16)info : 0);
4453         spin_unlock_irqrestore(&ha->smp_lock, flags);
4454     }
4455  
4456     if (copy_to_user(arg, rsc, sizeof(gdth_ioctl_rescan)))
4457         rc = -EFAULT;
4458     else
4459         rc = 0;
4460 
4461 free_fail:
4462     kfree(rsc);
4463     kfree(cmd);
4464     return rc;
4465 }
4466   
4467 static int gdth_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
4468 {
4469     gdth_ha_str *ha; 
4470     Scsi_Cmnd *scp;
4471     unsigned long flags;
4472     char cmnd[MAX_COMMAND_SIZE];   
4473     void __user *argp = (void __user *)arg;
4474 
4475     memset(cmnd, 0xff, 12);
4476     
4477     TRACE(("gdth_ioctl() cmd 0x%x\n", cmd));
4478  
4479     switch (cmd) {
4480       case GDTIOCTL_CTRCNT:
4481       { 
4482         int cnt = gdth_ctr_count;
4483         if (put_user(cnt, (int __user *)argp))
4484                 return -EFAULT;
4485         break;
4486       }
4487 
4488       case GDTIOCTL_DRVERS:
4489       { 
4490         int ver = (GDTH_VERSION<<8) | GDTH_SUBVERSION;
4491         if (put_user(ver, (int __user *)argp))
4492                 return -EFAULT;
4493         break;
4494       }
4495       
4496       case GDTIOCTL_OSVERS:
4497       { 
4498         gdth_ioctl_osvers osv; 
4499 
4500         osv.version = (u8)(LINUX_VERSION_CODE >> 16);
4501         osv.subversion = (u8)(LINUX_VERSION_CODE >> 8);
4502         osv.revision = (u16)(LINUX_VERSION_CODE & 0xff);
4503         if (copy_to_user(argp, &osv, sizeof(gdth_ioctl_osvers)))
4504                 return -EFAULT;
4505         break;
4506       }
4507 
4508       case GDTIOCTL_CTRTYPE:
4509       { 
4510         gdth_ioctl_ctrtype ctrt;
4511         
4512         if (copy_from_user(&ctrt, argp, sizeof(gdth_ioctl_ctrtype)) ||
4513             (NULL == (ha = gdth_find_ha(ctrt.ionode))))
4514             return -EFAULT;
4515 
4516         if (ha->type == GDT_ISA || ha->type == GDT_EISA) {
4517             ctrt.type = (u8)((ha->stype>>20) - 0x10);
4518         } else {
4519             if (ha->type != GDT_PCIMPR) {
4520                 ctrt.type = (u8)((ha->stype<<4) + 6);
4521             } else {
4522                 ctrt.type = 
4523                     (ha->oem_id == OEM_ID_INTEL ? 0xfd : 0xfe);
4524                 if (ha->stype >= 0x300)
4525                     ctrt.ext_type = 0x6000 | ha->pdev->subsystem_device;
4526                 else 
4527                     ctrt.ext_type = 0x6000 | ha->stype;
4528             }
4529             ctrt.device_id = ha->pdev->device;
4530             ctrt.sub_device_id = ha->pdev->subsystem_device;
4531         }
4532         ctrt.info = ha->brd_phys;
4533         ctrt.oem_id = ha->oem_id;
4534         if (copy_to_user(argp, &ctrt, sizeof(gdth_ioctl_ctrtype)))
4535             return -EFAULT;
4536         break;
4537       }
4538         
4539       case GDTIOCTL_GENERAL:
4540         return ioc_general(argp, cmnd);
4541 
4542       case GDTIOCTL_EVENT:
4543         return ioc_event(argp);
4544 
4545       case GDTIOCTL_LOCKDRV:
4546         return ioc_lockdrv(argp);
4547 
4548       case GDTIOCTL_LOCKCHN:
4549       {
4550         gdth_ioctl_lockchn lchn;
4551         u8 i, j;
4552 
4553         if (copy_from_user(&lchn, argp, sizeof(gdth_ioctl_lockchn)) ||
4554             (NULL == (ha = gdth_find_ha(lchn.ionode))))
4555             return -EFAULT;
4556 
4557         i = lchn.channel;
4558         if (i < ha->bus_cnt) {
4559             if (lchn.lock) {
4560                 spin_lock_irqsave(&ha->smp_lock, flags);
4561                 ha->raw[i].lock = 1;
4562                 spin_unlock_irqrestore(&ha->smp_lock, flags);
4563                 for (j = 0; j < ha->tid_cnt; ++j)
4564                     gdth_wait_completion(ha, i, j);
4565             } else {
4566                 spin_lock_irqsave(&ha->smp_lock, flags);
4567                 ha->raw[i].lock = 0;
4568                 spin_unlock_irqrestore(&ha->smp_lock, flags);
4569                 for (j = 0; j < ha->tid_cnt; ++j)
4570                     gdth_next(ha);
4571             }
4572         } 
4573         break;
4574       }
4575 
4576       case GDTIOCTL_RESCAN:
4577         return ioc_rescan(argp, cmnd);
4578 
4579       case GDTIOCTL_HDRLIST:
4580         return ioc_hdrlist(argp, cmnd);
4581 
4582       case GDTIOCTL_RESET_BUS:
4583       {
4584         gdth_ioctl_reset res;
4585         int rval;
4586 
4587         if (copy_from_user(&res, argp, sizeof(gdth_ioctl_reset)) ||
4588             (NULL == (ha = gdth_find_ha(res.ionode))))
4589             return -EFAULT;
4590 
4591         scp  = kzalloc(sizeof(*scp), GFP_KERNEL);
4592         if (!scp)
4593             return -ENOMEM;
4594         scp->device = ha->sdev;
4595         scp->cmd_len = 12;
4596         scp->device->channel = res.number;
4597         rval = gdth_eh_bus_reset(scp);
4598         res.status = (rval == SUCCESS ? S_OK : S_GENERR);
4599         kfree(scp);
4600 
4601         if (copy_to_user(argp, &res, sizeof(gdth_ioctl_reset)))
4602             return -EFAULT;
4603         break;
4604       }
4605 
4606       case GDTIOCTL_RESET_DRV:
4607         return ioc_resetdrv(argp, cmnd);
4608 
4609       default:
4610         break; 
4611     }
4612     return 0;
4613 }
4614 
4615 static long gdth_unlocked_ioctl(struct file *file, unsigned int cmd,
4616                                 unsigned long arg)
4617 {
4618         int ret;
4619 
4620         mutex_lock(&gdth_mutex);
4621         ret = gdth_ioctl(file, cmd, arg);
4622         mutex_unlock(&gdth_mutex);
4623 
4624         return ret;
4625 }
4626 
4627 /* flush routine */
4628 static void gdth_flush(gdth_ha_str *ha)
4629 {
4630     int             i;
4631     gdth_cmd_str    gdtcmd;
4632     char            cmnd[MAX_COMMAND_SIZE];   
4633     memset(cmnd, 0xff, MAX_COMMAND_SIZE);
4634 
4635     TRACE2(("gdth_flush() hanum %d\n", ha->hanum));
4636 
4637     for (i = 0; i < MAX_HDRIVES; ++i) {
4638         if (ha->hdr[i].present) {
4639             gdtcmd.BoardNode = LOCALBOARD;
4640             gdtcmd.Service = CACHESERVICE;
4641             gdtcmd.OpCode = GDT_FLUSH;
4642             if (ha->cache_feat & GDT_64BIT) { 
4643                 gdtcmd.u.cache64.DeviceNo = i;
4644                 gdtcmd.u.cache64.BlockNo = 1;
4645                 gdtcmd.u.cache64.sg_canz = 0;
4646             } else {
4647                 gdtcmd.u.cache.DeviceNo = i;
4648                 gdtcmd.u.cache.BlockNo = 1;
4649                 gdtcmd.u.cache.sg_canz = 0;
4650             }
4651             TRACE2(("gdth_flush(): flush ha %d drive %d\n", ha->hanum, i));
4652 
4653             gdth_execute(ha->shost, &gdtcmd, cmnd, 30, NULL);
4654         }
4655     }
4656 }
4657 
4658 /* configure lun */
4659 static int gdth_slave_configure(struct scsi_device *sdev)
4660 {
4661     sdev->skip_ms_page_3f = 1;
4662     sdev->skip_ms_page_8 = 1;
4663     return 0;
4664 }
4665 
4666 static struct scsi_host_template gdth_template = {
4667         .name                   = "GDT SCSI Disk Array Controller",
4668         .info                   = gdth_info, 
4669         .queuecommand           = gdth_queuecommand,
4670         .eh_bus_reset_handler   = gdth_eh_bus_reset,
4671         .slave_configure        = gdth_slave_configure,
4672         .bios_param             = gdth_bios_param,
4673         .show_info              = gdth_show_info,
4674         .write_info             = gdth_set_info,
4675         .eh_timed_out           = gdth_timed_out,
4676         .proc_name              = "gdth",
4677         .can_queue              = GDTH_MAXCMDS,
4678         .this_id                = -1,
4679         .sg_tablesize           = GDTH_MAXSG,
4680         .cmd_per_lun            = GDTH_MAXC_P_L,
4681         .unchecked_isa_dma      = 1,
4682         .use_clustering         = ENABLE_CLUSTERING,
4683         .no_write_same          = 1,
4684 };
4685 
4686 #ifdef CONFIG_ISA
4687 static int __init gdth_isa_probe_one(u32 isa_bios)
4688 {
4689         struct Scsi_Host *shp;
4690         gdth_ha_str *ha;
4691         dma_addr_t scratch_dma_handle = 0;
4692         int error, i;
4693 
4694         if (!gdth_search_isa(isa_bios))
4695                 return -ENXIO;
4696 
4697         shp = scsi_host_alloc(&gdth_template, sizeof(gdth_ha_str));
4698         if (!shp)
4699                 return -ENOMEM;
4700         ha = shost_priv(shp);
4701 
4702         error = -ENODEV;
4703         if (!gdth_init_isa(isa_bios,ha))
4704                 goto out_host_put;
4705 
4706         /* controller found and initialized */
4707         printk("Configuring GDT-ISA HA at BIOS 0x%05X IRQ %u DRQ %u\n",
4708                 isa_bios, ha->irq, ha->drq);
4709 
4710         error = request_irq(ha->irq, gdth_interrupt, 0, "gdth", ha);
4711         if (error) {
4712                 printk("GDT-ISA: Unable to allocate IRQ\n");
4713                 goto out_host_put;
4714         }
4715 
4716         error = request_dma(ha->drq, "gdth");
4717         if (error) {
4718                 printk("GDT-ISA: Unable to allocate DMA channel\n");
4719                 goto out_free_irq;
4720         }
4721 
4722         set_dma_mode(ha->drq,DMA_MODE_CASCADE);
4723         enable_dma(ha->drq);
4724         shp->unchecked_isa_dma = 1;
4725         shp->irq = ha->irq;
4726         shp->dma_channel = ha->drq;
4727 
4728         ha->hanum = gdth_ctr_count++;
4729         ha->shost = shp;
4730 
4731         ha->pccb = &ha->cmdext;
4732         ha->ccb_phys = 0L;
4733         ha->pdev = NULL;
4734 
4735         error = -ENOMEM;
4736 
4737         ha->pscratch = pci_alloc_consistent(ha->pdev, GDTH_SCRATCH,
4738                                                 &scratch_dma_handle);
4739         if (!ha->pscratch)
4740                 goto out_dec_counters;
4741         ha->scratch_phys = scratch_dma_handle;
4742 
4743         ha->pmsg = pci_alloc_consistent(ha->pdev, sizeof(gdth_msg_str),
4744                                                 &scratch_dma_handle);
4745         if (!ha->pmsg)
4746                 goto out_free_pscratch;
4747         ha->msg_phys = scratch_dma_handle;
4748 
4749 #ifdef INT_COAL
4750         ha->coal_stat = pci_alloc_consistent(ha->pdev,
4751                                 sizeof(gdth_coal_status) * MAXOFFSETS,
4752                                 &scratch_dma_handle);
4753         if (!ha->coal_stat)
4754                 goto out_free_pmsg;
4755         ha->coal_stat_phys = scratch_dma_handle;
4756 #endif
4757 
4758         ha->scratch_busy = FALSE;
4759         ha->req_first = NULL;
4760         ha->tid_cnt = MAX_HDRIVES;
4761         if (max_ids > 0 && max_ids < ha->tid_cnt)
4762                 ha->tid_cnt = max_ids;
4763         for (i = 0; i < GDTH_MAXCMDS; ++i)
4764                 ha->cmd_tab[i].cmnd = UNUSED_CMND;
4765         ha->scan_mode = rescan ? 0x10 : 0;
4766 
4767         error = -ENODEV;
4768         if (!gdth_search_drives(ha)) {
4769                 printk("GDT-ISA: Error during device scan\n");
4770                 goto out_free_coal_stat;
4771         }
4772 
4773         if (hdr_channel < 0 || hdr_channel > ha->bus_cnt)
4774                 hdr_channel = ha->bus_cnt;
4775         ha->virt_bus = hdr_channel;
4776 
4777         if (ha->cache_feat & ha->raw_feat & ha->screen_feat & GDT_64BIT)
4778                 shp->max_cmd_len = 16;
4779 
4780         shp->max_id      = ha->tid_cnt;
4781         shp->max_lun     = MAXLUN;
4782         shp->max_channel = ha->bus_cnt;
4783 
4784         spin_lock_init(&ha->smp_lock);
4785         gdth_enable_int(ha);
4786 
4787         error = scsi_add_host(shp, NULL);
4788         if (error)
4789                 goto out_free_coal_stat;
4790         list_add_tail(&ha->list, &gdth_instances);
4791         gdth_timer_init();
4792 
4793         scsi_scan_host(shp);
4794 
4795         return 0;
4796 
4797  out_free_coal_stat:
4798 #ifdef INT_COAL
4799         pci_free_consistent(ha->pdev, sizeof(gdth_coal_status) * MAXOFFSETS,
4800                                 ha->coal_stat, ha->coal_stat_phys);
4801  out_free_pmsg:
4802 #endif
4803         pci_free_consistent(ha->pdev, sizeof(gdth_msg_str),
4804                                 ha->pmsg, ha->msg_phys);
4805  out_free_pscratch:
4806         pci_free_consistent(ha->pdev, GDTH_SCRATCH,
4807                                 ha->pscratch, ha->scratch_phys);
4808  out_dec_counters:
4809         gdth_ctr_count--;
4810  out_free_irq:
4811         free_irq(ha->irq, ha);
4812  out_host_put:
4813         scsi_host_put(shp);
4814         return error;
4815 }
4816 #endif /* CONFIG_ISA */
4817 
4818 #ifdef CONFIG_EISA
4819 static int __init gdth_eisa_probe_one(u16 eisa_slot)
4820 {
4821         struct Scsi_Host *shp;
4822         gdth_ha_str *ha;
4823         dma_addr_t scratch_dma_handle = 0;
4824         int error, i;
4825 
4826         if (!gdth_search_eisa(eisa_slot))
4827                 return -ENXIO;
4828 
4829         shp = scsi_host_alloc(&gdth_template, sizeof(gdth_ha_str));
4830         if (!shp)
4831                 return -ENOMEM;
4832         ha = shost_priv(shp);
4833 
4834         error = -ENODEV;
4835         if (!gdth_init_eisa(eisa_slot,ha))
4836                 goto out_host_put;
4837 
4838         /* controller found and initialized */
4839         printk("Configuring GDT-EISA HA at Slot %d IRQ %u\n",
4840                 eisa_slot >> 12, ha->irq);
4841 
4842         error = request_irq(ha->irq, gdth_interrupt, 0, "gdth", ha);
4843         if (error) {
4844                 printk("GDT-EISA: Unable to allocate IRQ\n");
4845                 goto out_host_put;
4846         }
4847 
4848         shp->unchecked_isa_dma = 0;
4849         shp->irq = ha->irq;
4850         shp->dma_channel = 0xff;
4851 
4852         ha->hanum = gdth_ctr_count++;
4853         ha->shost = shp;
4854 
4855         TRACE2(("EISA detect Bus 0: hanum %d\n", ha->hanum));
4856 
4857         ha->pccb = &ha->cmdext;
4858         ha->ccb_phys = 0L;
4859 
4860         error = -ENOMEM;
4861 
4862         ha->pdev = NULL;
4863         ha->pscratch = pci_alloc_consistent(ha->pdev, GDTH_SCRATCH,
4864                                                 &scratch_dma_handle);
4865         if (!ha->pscratch)
4866                 goto out_free_irq;
4867         ha->scratch_phys = scratch_dma_handle;
4868 
4869         ha->pmsg = pci_alloc_consistent(ha->pdev, sizeof(gdth_msg_str),
4870                                                 &scratch_dma_handle);
4871         if (!ha->pmsg)
4872                 goto out_free_pscratch;
4873         ha->msg_phys = scratch_dma_handle;
4874 
4875 #ifdef INT_COAL
4876         ha->coal_stat = pci_alloc_consistent(ha->pdev,
4877                         sizeof(gdth_coal_status) * MAXOFFSETS,
4878                         &scratch_dma_handle);
4879         if (!ha->coal_stat)
4880                 goto out_free_pmsg;
4881         ha->coal_stat_phys = scratch_dma_handle;
4882 #endif
4883 
4884         ha->ccb_phys = pci_map_single(ha->pdev,ha->pccb,
4885                         sizeof(gdth_cmd_str), PCI_DMA_BIDIRECTIONAL);
4886         if (!ha->ccb_phys)
4887                 goto out_free_coal_stat;
4888 
4889         ha->scratch_busy = FALSE;
4890         ha->req_first = NULL;
4891         ha->tid_cnt = MAX_HDRIVES;
4892         if (max_ids > 0 && max_ids < ha->tid_cnt)
4893                 ha->tid_cnt = max_ids;
4894         for (i = 0; i < GDTH_MAXCMDS; ++i)
4895                 ha->cmd_tab[i].cmnd = UNUSED_CMND;
4896         ha->scan_mode = rescan ? 0x10 : 0;
4897 
4898         if (!gdth_search_drives(ha)) {
4899                 printk("GDT-EISA: Error during device scan\n");
4900                 error = -ENODEV;
4901                 goto out_free_ccb_phys;
4902         }
4903 
4904         if (hdr_channel < 0 || hdr_channel > ha->bus_cnt)
4905                 hdr_channel = ha->bus_cnt;
4906         ha->virt_bus = hdr_channel;
4907 
4908         if (ha->cache_feat & ha->raw_feat & ha->screen_feat & GDT_64BIT)
4909                 shp->max_cmd_len = 16;
4910 
4911         shp->max_id      = ha->tid_cnt;
4912         shp->max_lun     = MAXLUN;
4913         shp->max_channel = ha->bus_cnt;
4914 
4915         spin_lock_init(&ha->smp_lock);
4916         gdth_enable_int(ha);
4917 
4918         error = scsi_add_host(shp, NULL);
4919         if (error)
4920                 goto out_free_ccb_phys;
4921         list_add_tail(&ha->list, &gdth_instances);
4922         gdth_timer_init();
4923 
4924         scsi_scan_host(shp);
4925 
4926         return 0;
4927 
4928  out_free_ccb_phys:
4929         pci_unmap_single(ha->pdev,ha->ccb_phys, sizeof(gdth_cmd_str),
4930                         PCI_DMA_BIDIRECTIONAL);
4931  out_free_coal_stat:
4932 #ifdef INT_COAL
4933         pci_free_consistent(ha->pdev, sizeof(gdth_coal_status) * MAXOFFSETS,
4934                                 ha->coal_stat, ha->coal_stat_phys);
4935  out_free_pmsg:
4936 #endif
4937         pci_free_consistent(ha->pdev, sizeof(gdth_msg_str),
4938                                 ha->pmsg, ha->msg_phys);
4939  out_free_pscratch:
4940         pci_free_consistent(ha->pdev, GDTH_SCRATCH,
4941                                 ha->pscratch, ha->scratch_phys);
4942  out_free_irq:
4943         free_irq(ha->irq, ha);
4944         gdth_ctr_count--;
4945  out_host_put:
4946         scsi_host_put(shp);
4947         return error;
4948 }
4949 #endif /* CONFIG_EISA */
4950 
4951 #ifdef CONFIG_PCI
4952 static int gdth_pci_probe_one(gdth_pci_str *pcistr, gdth_ha_str **ha_out)
4953 {
4954         struct Scsi_Host *shp;
4955         gdth_ha_str *ha;
4956         dma_addr_t scratch_dma_handle = 0;
4957         int error, i;
4958         struct pci_dev *pdev = pcistr->pdev;
4959 
4960         *ha_out = NULL;
4961 
4962         shp = scsi_host_alloc(&gdth_template, sizeof(gdth_ha_str));
4963         if (!shp)
4964                 return -ENOMEM;
4965         ha = shost_priv(shp);
4966 
4967         error = -ENODEV;
4968         if (!gdth_init_pci(pdev, pcistr, ha))
4969                 goto out_host_put;
4970 
4971         /* controller found and initialized */
4972         printk("Configuring GDT-PCI HA at %d/%d IRQ %u\n",
4973                 pdev->bus->number,
4974                 PCI_SLOT(pdev->devfn),
4975                 ha->irq);
4976 
4977         error = request_irq(ha->irq, gdth_interrupt,
4978                                 IRQF_SHARED, "gdth", ha);
4979         if (error) {
4980                 printk("GDT-PCI: Unable to allocate IRQ\n");
4981                 goto out_host_put;
4982         }
4983 
4984         shp->unchecked_isa_dma = 0;
4985         shp->irq = ha->irq;
4986         shp->dma_channel = 0xff;
4987 
4988         ha->hanum = gdth_ctr_count++;
4989         ha->shost = shp;
4990 
4991         ha->pccb = &ha->cmdext;
4992         ha->ccb_phys = 0L;
4993 
4994         error = -ENOMEM;
4995 
4996         ha->pscratch = pci_alloc_consistent(ha->pdev, GDTH_SCRATCH,
4997                                                 &scratch_dma_handle);
4998         if (!ha->pscratch)
4999                 goto out_free_irq;
5000         ha->scratch_phys = scratch_dma_handle;
5001 
5002         ha->pmsg = pci_alloc_consistent(ha->pdev, sizeof(gdth_msg_str),
5003                                         &scratch_dma_handle);
5004         if (!ha->pmsg)
5005                 goto out_free_pscratch;
5006         ha->msg_phys = scratch_dma_handle;
5007 
5008 #ifdef INT_COAL
5009         ha->coal_stat = pci_alloc_consistent(ha->pdev,
5010                         sizeof(gdth_coal_status) * MAXOFFSETS,
5011                         &scratch_dma_handle);
5012         if (!ha->coal_stat)
5013                 goto out_free_pmsg;
5014         ha->coal_stat_phys = scratch_dma_handle;
5015 #endif
5016 
5017         ha->scratch_busy = FALSE;
5018         ha->req_first = NULL;
5019         ha->tid_cnt = pdev->device >= 0x200 ? MAXID : MAX_HDRIVES;
5020         if (max_ids > 0 && max_ids < ha->tid_cnt)
5021                 ha->tid_cnt = max_ids;
5022         for (i = 0; i < GDTH_MAXCMDS; ++i)
5023                 ha->cmd_tab[i].cmnd = UNUSED_CMND;
5024         ha->scan_mode = rescan ? 0x10 : 0;
5025 
5026         error = -ENODEV;
5027         if (!gdth_search_drives(ha)) {
5028                 printk("GDT-PCI %d: Error during device scan\n", ha->hanum);
5029                 goto out_free_coal_stat;
5030         }
5031 
5032         if (hdr_channel < 0 || hdr_channel > ha->bus_cnt)
5033                 hdr_channel = ha->bus_cnt;
5034         ha->virt_bus = hdr_channel;
5035 
5036         /* 64-bit DMA only supported from FW >= x.43 */
5037         if (!(ha->cache_feat & ha->raw_feat & ha->screen_feat & GDT_64BIT) ||
5038             !ha->dma64_support) {
5039                 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
5040                         printk(KERN_WARNING "GDT-PCI %d: "
5041                                 "Unable to set 32-bit DMA\n", ha->hanum);
5042                                 goto out_free_coal_stat;
5043                 }
5044         } else {
5045                 shp->max_cmd_len = 16;
5046                 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
5047                         printk("GDT-PCI %d: 64-bit DMA enabled\n", ha->hanum);
5048                 } else if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
5049                         printk(KERN_WARNING "GDT-PCI %d: "
5050                                 "Unable to set 64/32-bit DMA\n", ha->hanum);
5051                         goto out_free_coal_stat;
5052                 }
5053         }
5054 
5055         shp->max_id      = ha->tid_cnt;
5056         shp->max_lun     = MAXLUN;
5057         shp->max_channel = ha->bus_cnt;
5058 
5059         spin_lock_init(&ha->smp_lock);
5060         gdth_enable_int(ha);
5061 
5062         error = scsi_add_host(shp, &pdev->dev);
5063         if (error)
5064                 goto out_free_coal_stat;
5065         list_add_tail(&ha->list, &gdth_instances);
5066 
5067         pci_set_drvdata(ha->pdev, ha);
5068         gdth_timer_init();
5069 
5070         scsi_scan_host(shp);
5071 
5072         *ha_out = ha;
5073 
5074         return 0;
5075 
5076  out_free_coal_stat:
5077 #ifdef INT_COAL
5078         pci_free_consistent(ha->pdev, sizeof(gdth_coal_status) * MAXOFFSETS,
5079                                 ha->coal_stat, ha->coal_stat_phys);
5080  out_free_pmsg:
5081 #endif
5082         pci_free_consistent(ha->pdev, sizeof(gdth_msg_str),
5083                                 ha->pmsg, ha->msg_phys);
5084  out_free_pscratch:
5085         pci_free_consistent(ha->pdev, GDTH_SCRATCH,
5086                                 ha->pscratch, ha->scratch_phys);
5087  out_free_irq:
5088         free_irq(ha->irq, ha);
5089         gdth_ctr_count--;
5090  out_host_put:
5091         scsi_host_put(shp);
5092         return error;
5093 }
5094 #endif /* CONFIG_PCI */
5095 
5096 static void gdth_remove_one(gdth_ha_str *ha)
5097 {
5098         struct Scsi_Host *shp = ha->shost;
5099 
5100         TRACE2(("gdth_remove_one()\n"));
5101 
5102         scsi_remove_host(shp);
5103 
5104         gdth_flush(ha);
5105 
5106         if (ha->sdev) {
5107                 scsi_free_host_dev(ha->sdev);
5108                 ha->sdev = NULL;
5109         }
5110 
5111         if (shp->irq)
5112                 free_irq(shp->irq,ha);
5113 
5114 #ifdef CONFIG_ISA
5115         if (shp->dma_channel != 0xff)
5116                 free_dma(shp->dma_channel);
5117 #endif
5118 #ifdef INT_COAL
5119         if (ha->coal_stat)
5120                 pci_free_consistent(ha->pdev, sizeof(gdth_coal_status) *
5121                         MAXOFFSETS, ha->coal_stat, ha->coal_stat_phys);
5122 #endif
5123         if (ha->pscratch)
5124                 pci_free_consistent(ha->pdev, GDTH_SCRATCH,
5125                         ha->pscratch, ha->scratch_phys);
5126         if (ha->pmsg)
5127                 pci_free_consistent(ha->pdev, sizeof(gdth_msg_str),
5128                         ha->pmsg, ha->msg_phys);
5129         if (ha->ccb_phys)
5130                 pci_unmap_single(ha->pdev,ha->ccb_phys,
5131                         sizeof(gdth_cmd_str),PCI_DMA_BIDIRECTIONAL);
5132 
5133         scsi_host_put(shp);
5134 }
5135 
5136 static int gdth_halt(struct notifier_block *nb, unsigned long event, void *buf)
5137 {
5138         gdth_ha_str *ha;
5139 
5140         TRACE2(("gdth_halt() event %d\n", (int)event));
5141         if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF)
5142                 return NOTIFY_DONE;
5143 
5144         list_for_each_entry(ha, &gdth_instances, list)
5145                 gdth_flush(ha);
5146 
5147         return NOTIFY_OK;
5148 }
5149 
5150 static struct notifier_block gdth_notifier = {
5151     gdth_halt, NULL, 0
5152 };
5153 
5154 static int __init gdth_init(void)
5155 {
5156         if (disable) {
5157                 printk("GDT-HA: Controller driver disabled from"
5158                        " command line !\n");
5159                 return 0;
5160         }
5161 
5162         printk("GDT-HA: Storage RAID Controller Driver. Version: %s\n",
5163                GDTH_VERSION_STR);
5164 
5165         /* initializations */
5166         gdth_polling = TRUE;
5167         gdth_clear_events();
5168         init_timer(&gdth_timer);
5169 
5170         /* As default we do not probe for EISA or ISA controllers */
5171         if (probe_eisa_isa) {
5172                 /* scanning for controllers, at first: ISA controller */
5173 #ifdef CONFIG_ISA
5174                 u32 isa_bios;
5175                 for (isa_bios = 0xc8000UL; isa_bios <= 0xd8000UL;
5176                                 isa_bios += 0x8000UL)
5177                         gdth_isa_probe_one(isa_bios);
5178 #endif
5179 #ifdef CONFIG_EISA
5180                 {
5181                         u16 eisa_slot;
5182                         for (eisa_slot = 0x1000; eisa_slot <= 0x8000;
5183                                                  eisa_slot += 0x1000)
5184                                 gdth_eisa_probe_one(eisa_slot);
5185                 }
5186 #endif
5187         }
5188 
5189 #ifdef CONFIG_PCI
5190         /* scanning for PCI controllers */
5191         if (pci_register_driver(&gdth_pci_driver)) {
5192                 gdth_ha_str *ha;
5193 
5194                 list_for_each_entry(ha, &gdth_instances, list)
5195                         gdth_remove_one(ha);
5196                 return -ENODEV;
5197         }
5198 #endif /* CONFIG_PCI */
5199 
5200         TRACE2(("gdth_detect() %d controller detected\n", gdth_ctr_count));
5201 
5202         major = register_chrdev(0,"gdth", &gdth_fops);
5203         register_reboot_notifier(&gdth_notifier);
5204         gdth_polling = FALSE;
5205         return 0;
5206 }
5207 
5208 static void __exit gdth_exit(void)
5209 {
5210         gdth_ha_str *ha;
5211 
5212         unregister_chrdev(major, "gdth");
5213         unregister_reboot_notifier(&gdth_notifier);
5214 
5215 #ifdef GDTH_STATISTICS
5216         del_timer_sync(&gdth_timer);
5217 #endif
5218 
5219 #ifdef CONFIG_PCI
5220         pci_unregister_driver(&gdth_pci_driver);
5221 #endif
5222 
5223         list_for_each_entry(ha, &gdth_instances, list)
5224                 gdth_remove_one(ha);
5225 }
5226 
5227 module_init(gdth_init);
5228 module_exit(gdth_exit);
5229 
5230 #ifndef MODULE
5231 __setup("gdth=", option_setup);
5232 #endif
5233 

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