Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
[linux-3.10.git] / drivers / scsi / gdth.c
1 /************************************************************************
2  * Linux driver for                                                     *  
3  * ICP vortex GmbH:    GDT ISA/EISA/PCI Disk Array Controllers          *
4  * Intel Corporation:  Storage RAID Controllers                         *
5  *                                                                      *
6  * gdth.c                                                               *
7  * Copyright (C) 1995-06 ICP vortex GmbH, Achim Leubner                 *
8  * Copyright (C) 2002-04 Intel Corporation                              *
9  * Copyright (C) 2003-06 Adaptec Inc.                                   *
10  * <achim_leubner@adaptec.com>                                          *
11  *                                                                      *
12  * Additions/Fixes:                                                     *
13  * Boji Tony Kannanthanam <boji.t.kannanthanam@intel.com>               *
14  * Johannes Dinner <johannes_dinner@adaptec.com>                        *
15  *                                                                      *
16  * This program is free software; you can redistribute it and/or modify *
17  * it under the terms of the GNU General Public License as published    *
18  * by the Free Software Foundation; either version 2 of the License,    *
19  * or (at your option) any later version.                               *
20  *                                                                      *
21  * This program is distributed in the hope that it will be useful,      *
22  * but WITHOUT ANY WARRANTY; without even the implied warranty of       *
23  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the         *
24  * GNU General Public License for more details.                         *
25  *                                                                      *
26  * You should have received a copy of the GNU General Public License    *
27  * along with this kernel; if not, write to the Free Software           *
28  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.            *
29  *                                                                      *
30  * Linux kernel 2.6.x supported                                         *
31  *                                                                      *
32  ************************************************************************/
33
34 /* All GDT Disk Array Controllers are fully supported by this driver.
35  * This includes the PCI/EISA/ISA SCSI Disk Array Controllers and the
36  * PCI Fibre Channel Disk Array Controllers. See gdth.h for a complete
37  * list of all controller types.
38  * 
39  * If you have one or more GDT3000/3020 EISA controllers with 
40  * controller BIOS disabled, you have to set the IRQ values with the 
41  * command line option "gdth=irq1,irq2,...", where the irq1,irq2,... are
42  * the IRQ values for the EISA controllers.
43  * 
44  * After the optional list of IRQ values, other possible 
45  * command line options are:
46  * disable:Y                    disable driver
47  * disable:N                    enable driver
48  * reserve_mode:0               reserve no drives for the raw service
49  * reserve_mode:1               reserve all not init., removable drives
50  * reserve_mode:2               reserve all not init. drives
51  * reserve_list:h,b,t,l,h,b,t,l,...     reserve particular drive(s) with 
52  *                              h- controller no., b- channel no., 
53  *                              t- target ID, l- LUN
54  * reverse_scan:Y               reverse scan order for PCI controllers         
55  * reverse_scan:N               scan PCI controllers like BIOS
56  * max_ids:x                    x - target ID count per channel (1..MAXID)
57  * rescan:Y                     rescan all channels/IDs 
58  * rescan:N                     use all devices found until now
59  * hdr_channel:x                x - number of virtual bus for host drives
60  * shared_access:Y              disable driver reserve/release protocol to 
61  *                              access a shared resource from several nodes, 
62  *                              appropriate controller firmware required
63  * shared_access:N              enable driver reserve/release protocol
64  * probe_eisa_isa:Y             scan for EISA/ISA controllers
65  * probe_eisa_isa:N             do not scan for EISA/ISA controllers
66  * force_dma32:Y                use only 32 bit DMA mode
67  * force_dma32:N                use 64 bit DMA mode, if supported
68  *
69  * The default values are: "gdth=disable:N,reserve_mode:1,reverse_scan:N,
70  *                          max_ids:127,rescan:N,hdr_channel:0,
71  *                          shared_access:Y,probe_eisa_isa:N,force_dma32:N".
72  * Here is another example: "gdth=reserve_list:0,1,2,0,0,1,3,0,rescan:Y".
73  * 
74  * When loading the gdth driver as a module, the same options are available. 
75  * You can set the IRQs with "IRQ=...". However, the syntax to specify the
76  * options changes slightly. You must replace all ',' between options 
77  * with ' ' and all ':' with '=' and you must use 
78  * '1' in place of 'Y' and '0' in place of 'N'.
79  * 
80  * Default: "modprobe gdth disable=0 reserve_mode=1 reverse_scan=0
81  *           max_ids=127 rescan=0 hdr_channel=0 shared_access=0
82  *           probe_eisa_isa=0 force_dma32=0"
83  * The other example: "modprobe gdth reserve_list=0,1,2,0,0,1,3,0 rescan=1".
84  */
85
86 /* The meaning of the Scsi_Pointer members in this driver is as follows:
87  * ptr:                     Chaining
88  * this_residual:           gdth_bufflen
89  * buffer:                  gdth_sglist
90  * dma_handle:              unused
91  * buffers_residual:        gdth_sg_count
92  * Status:                  unused
93  * Message:                 unused
94  * have_data_in:            unused
95  * sent_command:            unused
96  * phase:                   unused
97  */
98
99
100 /* interrupt coalescing */
101 /* #define INT_COAL */
102
103 /* statistics */
104 #define GDTH_STATISTICS
105
106 #include <linux/module.h>
107
108 #include <linux/version.h>
109 #include <linux/kernel.h>
110 #include <linux/types.h>
111 #include <linux/pci.h>
112 #include <linux/string.h>
113 #include <linux/ctype.h>
114 #include <linux/ioport.h>
115 #include <linux/delay.h>
116 #include <linux/interrupt.h>
117 #include <linux/in.h>
118 #include <linux/proc_fs.h>
119 #include <linux/time.h>
120 #include <linux/timer.h>
121 #include <linux/dma-mapping.h>
122 #include <linux/list.h>
123
124 #ifdef GDTH_RTC
125 #include <linux/mc146818rtc.h>
126 #endif
127 #include <linux/reboot.h>
128
129 #include <asm/dma.h>
130 #include <asm/system.h>
131 #include <asm/io.h>
132 #include <asm/uaccess.h>
133 #include <linux/spinlock.h>
134 #include <linux/blkdev.h>
135 #include <linux/scatterlist.h>
136
137 #include "scsi.h"
138 #include <scsi/scsi_host.h>
139 #include "gdth.h"
140
141 static void gdth_delay(int milliseconds);
142 static void gdth_eval_mapping(ulong32 size, ulong32 *cyls, int *heads, int *secs);
143 static irqreturn_t gdth_interrupt(int irq, void *dev_id);
144 static irqreturn_t __gdth_interrupt(gdth_ha_str *ha, int irq,
145                                     int gdth_from_wait, int* pIndex);
146 static int gdth_sync_event(gdth_ha_str *ha, int service, unchar index,
147                                                                Scsi_Cmnd *scp);
148 static int gdth_async_event(gdth_ha_str *ha);
149 static void gdth_log_event(gdth_evt_data *dvr, char *buffer);
150
151 static void gdth_putq(gdth_ha_str *ha, Scsi_Cmnd *scp, unchar priority);
152 static void gdth_next(gdth_ha_str *ha);
153 static int gdth_fill_raw_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, unchar b);
154 static int gdth_special_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp);
155 static gdth_evt_str *gdth_store_event(gdth_ha_str *ha, ushort source,
156                                       ushort idx, gdth_evt_data *evt);
157 static int gdth_read_event(gdth_ha_str *ha, int handle, gdth_evt_str *estr);
158 static void gdth_readapp_event(gdth_ha_str *ha, unchar application, 
159                                gdth_evt_str *estr);
160 static void gdth_clear_events(void);
161
162 static void gdth_copy_internal_data(gdth_ha_str *ha, Scsi_Cmnd *scp,
163                                     char *buffer, ushort count, int to_buffer);
164 static int gdth_internal_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp);
165 static int gdth_fill_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, ushort hdrive);
166
167 static void gdth_enable_int(gdth_ha_str *ha);
168 static unchar gdth_get_status(gdth_ha_str *ha, int irq);
169 static int gdth_test_busy(gdth_ha_str *ha);
170 static int gdth_get_cmd_index(gdth_ha_str *ha);
171 static void gdth_release_event(gdth_ha_str *ha);
172 static int gdth_wait(gdth_ha_str *ha, int index,ulong32 time);
173 static int gdth_internal_cmd(gdth_ha_str *ha, unchar service, ushort opcode,
174                                              ulong32 p1, ulong64 p2,ulong64 p3);
175 static int gdth_search_drives(gdth_ha_str *ha);
176 static int gdth_analyse_hdrive(gdth_ha_str *ha, ushort hdrive);
177
178 static const char *gdth_ctr_name(gdth_ha_str *ha);
179
180 static int gdth_open(struct inode *inode, struct file *filep);
181 static int gdth_close(struct inode *inode, struct file *filep);
182 static int gdth_ioctl(struct inode *inode, struct file *filep,
183                       unsigned int cmd, unsigned long arg);
184
185 static void gdth_flush(gdth_ha_str *ha);
186 static int gdth_halt(struct notifier_block *nb, ulong event, void *buf);
187 static int gdth_queuecommand(Scsi_Cmnd *scp,void (*done)(Scsi_Cmnd *));
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 unchar   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 ulong32 max_rq=0, max_index=0, max_sg=0;
275 #ifdef INT_COAL
276 static ulong32 max_int_coal=0;
277 #endif
278 static ulong32 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)   (ushort)(ulong)(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 unchar   gdth_drq_tab[4] = {5,6,7,7};            /* DRQ table */
290 #endif
291 #if defined(CONFIG_EISA) || defined(CONFIG_ISA)
292 static unchar   gdth_irq_tab[6] = {0,10,11,12,14,0};    /* IRQ table */
293 #endif
294 static unchar   gdth_polling;                           /* polling if TRUE */
295 static int      gdth_ctr_count  = 0;                    /* controller count */
296 static LIST_HEAD(gdth_instances);                       /* controller list */
297 static unchar   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 unchar 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     .ioctl   = gdth_ioctl,
373     .open    = gdth_open,
374     .release = gdth_close,
375 };
376
377 /*
378  * gdth scsi_command access wrappers.
379  *   below 6 functions are used throughout the driver to access scsi_command's
380  *   io parameters. The reason we do not use the regular accessors from
381  *   scsi_cmnd.h is because of gdth_execute(). Since it is unrecommended for
382  *   llds to directly set scsi_cmnd's IO members. This driver will use SCp
383  *   members for IO parameters, and will copy scsi_cmnd's members to Scp
384  *   members in queuecommand. For internal commands through gdth_execute()
385  *   SCp's members will be set directly.
386  */
387 static inline unsigned gdth_bufflen(struct scsi_cmnd *cmd)
388 {
389         return (unsigned)cmd->SCp.this_residual;
390 }
391
392 static inline void gdth_set_bufflen(struct scsi_cmnd *cmd, unsigned bufflen)
393 {
394         cmd->SCp.this_residual = bufflen;
395 }
396
397 static inline unsigned gdth_sg_count(struct scsi_cmnd *cmd)
398 {
399         return (unsigned)cmd->SCp.buffers_residual;
400 }
401
402 static inline void gdth_set_sg_count(struct scsi_cmnd *cmd, unsigned sg_count)
403 {
404         cmd->SCp.buffers_residual = sg_count;
405 }
406
407 static inline struct scatterlist *gdth_sglist(struct scsi_cmnd *cmd)
408 {
409         return cmd->SCp.buffer;
410 }
411
412 static inline void gdth_set_sglist(struct scsi_cmnd *cmd,
413                                    struct scatterlist *sglist)
414 {
415         cmd->SCp.buffer = sglist;
416 }
417
418 #include "gdth_proc.h"
419 #include "gdth_proc.c"
420
421 /* notifier block to get a notify on system shutdown/halt/reboot */
422 static struct notifier_block gdth_notifier = {
423     gdth_halt, NULL, 0
424 };
425 static int notifier_disabled = 0;
426
427 static gdth_ha_str *gdth_find_ha(int hanum)
428 {
429         gdth_ha_str *ha;
430
431         list_for_each_entry(ha, &gdth_instances, list)
432                 if (hanum == ha->hanum)
433                         return ha;
434
435         return NULL;
436 }
437
438 static struct gdth_cmndinfo *gdth_get_cmndinfo(gdth_ha_str *ha)
439 {
440         struct gdth_cmndinfo *priv = NULL;
441         ulong flags;
442         int i;
443
444         spin_lock_irqsave(&ha->smp_lock, flags);
445
446         for (i=0; i<GDTH_MAXCMDS; ++i) {
447                 if (ha->cmndinfo[i].index == 0) {
448                         priv = &ha->cmndinfo[i];
449                         priv->index = i+1;
450                         memset(priv, 0, sizeof(*priv));
451                         break;
452                 }
453         }
454
455         spin_unlock_irqrestore(&ha->smp_lock, flags);
456
457         return priv;
458 }
459
460 static void gdth_put_cmndinfo(struct gdth_cmndinfo *priv)
461 {
462         BUG_ON(!priv);
463         priv->index = 0;
464 }
465
466 static void gdth_delay(int milliseconds)
467 {
468     if (milliseconds == 0) {
469         udelay(1);
470     } else {
471         mdelay(milliseconds);
472     }
473 }
474
475 static void gdth_scsi_done(struct scsi_cmnd *scp)
476 {
477         struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
478         int internal_command = cmndinfo->internal_command;
479
480         TRACE2(("gdth_scsi_done()\n"));
481
482         gdth_put_cmndinfo(cmndinfo);
483         scp->host_scribble = NULL;
484
485         if (internal_command)
486                 complete((struct completion *)scp->request);
487         else
488                 scp->scsi_done(scp);
489 }
490
491 int __gdth_execute(struct scsi_device *sdev, gdth_cmd_str *gdtcmd, char *cmnd,
492                    int timeout, u32 *info)
493 {
494     gdth_ha_str *ha = shost_priv(sdev->host);
495     Scsi_Cmnd *scp;
496     struct gdth_cmndinfo cmndinfo;
497     struct scatterlist one_sg;
498     DECLARE_COMPLETION_ONSTACK(wait);
499     int rval;
500
501     scp = kzalloc(sizeof(*scp), GFP_KERNEL);
502     if (!scp)
503         return -ENOMEM;
504
505     scp->device = sdev;
506     memset(&cmndinfo, 0, sizeof(cmndinfo));
507
508     /* use request field to save the ptr. to completion struct. */
509     scp->request = (struct request *)&wait;
510     scp->timeout_per_command = timeout*HZ;
511     sg_init_one(&one_sg, gdtcmd, sizeof(*gdtcmd));
512     gdth_set_sglist(scp, &one_sg);
513     gdth_set_sg_count(scp, 1);
514     gdth_set_bufflen(scp, sizeof(*gdtcmd));
515     scp->cmd_len = 12;
516     memcpy(scp->cmnd, cmnd, 12);
517     cmndinfo.priority = IOCTL_PRI;
518     cmndinfo.internal_command = 1;
519
520     TRACE(("__gdth_execute() cmd 0x%x\n", scp->cmnd[0]));
521     __gdth_queuecommand(ha, scp, &cmndinfo);
522
523     wait_for_completion(&wait);
524
525     rval = cmndinfo.status;
526     if (info)
527         *info = cmndinfo.info;
528     kfree(scp);
529     return rval;
530 }
531
532 int gdth_execute(struct Scsi_Host *shost, gdth_cmd_str *gdtcmd, char *cmnd,
533                  int timeout, u32 *info)
534 {
535     struct scsi_device *sdev = scsi_get_host_dev(shost);
536     int rval = __gdth_execute(sdev, gdtcmd, cmnd, timeout, info);
537
538     scsi_free_host_dev(sdev);
539     return rval;
540 }
541
542 static void gdth_eval_mapping(ulong32 size, ulong32 *cyls, int *heads, int *secs)
543 {
544     *cyls = size /HEADS/SECS;
545     if (*cyls <= MAXCYLS) {
546         *heads = HEADS;
547         *secs = SECS;
548     } else {                                        /* too high for 64*32 */
549         *cyls = size /MEDHEADS/MEDSECS;
550         if (*cyls <= MAXCYLS) {
551             *heads = MEDHEADS;
552             *secs = MEDSECS;
553         } else {                                    /* too high for 127*63 */
554             *cyls = size /BIGHEADS/BIGSECS;
555             *heads = BIGHEADS;
556             *secs = BIGSECS;
557         }
558     }
559 }
560
561 /* controller search and initialization functions */
562 #ifdef CONFIG_EISA
563 static int __init gdth_search_eisa(ushort eisa_adr)
564 {
565     ulong32 id;
566     
567     TRACE(("gdth_search_eisa() adr. %x\n",eisa_adr));
568     id = inl(eisa_adr+ID0REG);
569     if (id == GDT3A_ID || id == GDT3B_ID) {     /* GDT3000A or GDT3000B */
570         if ((inb(eisa_adr+EISAREG) & 8) == 0)   
571             return 0;                           /* not EISA configured */
572         return 1;
573     }
574     if (id == GDT3_ID)                          /* GDT3000 */
575         return 1;
576
577     return 0;                                   
578 }
579 #endif /* CONFIG_EISA */
580
581 #ifdef CONFIG_ISA
582 static int __init gdth_search_isa(ulong32 bios_adr)
583 {
584     void __iomem *addr;
585     ulong32 id;
586
587     TRACE(("gdth_search_isa() bios adr. %x\n",bios_adr));
588     if ((addr = ioremap(bios_adr+BIOS_ID_OFFS, sizeof(ulong32))) != NULL) {
589         id = readl(addr);
590         iounmap(addr);
591         if (id == GDT2_ID)                          /* GDT2000 */
592             return 1;
593     }
594     return 0;
595 }
596 #endif /* CONFIG_ISA */
597
598 #ifdef CONFIG_PCI
599 static void gdth_search_dev(gdth_pci_str *pcistr, ushort *cnt,
600                             ushort vendor, ushort dev);
601
602 static int __init gdth_search_pci(gdth_pci_str *pcistr)
603 {
604     ushort device, cnt;
605     
606     TRACE(("gdth_search_pci()\n"));
607
608     cnt = 0;
609     for (device = 0; device <= PCI_DEVICE_ID_VORTEX_GDT6555; ++device)
610         gdth_search_dev(pcistr, &cnt, PCI_VENDOR_ID_VORTEX, device);
611     for (device = PCI_DEVICE_ID_VORTEX_GDT6x17RP; 
612          device <= PCI_DEVICE_ID_VORTEX_GDTMAXRP; ++device)
613         gdth_search_dev(pcistr, &cnt, PCI_VENDOR_ID_VORTEX, device);
614     gdth_search_dev(pcistr, &cnt, PCI_VENDOR_ID_VORTEX, 
615                     PCI_DEVICE_ID_VORTEX_GDTNEWRX);
616     gdth_search_dev(pcistr, &cnt, PCI_VENDOR_ID_VORTEX, 
617                     PCI_DEVICE_ID_VORTEX_GDTNEWRX2);
618     gdth_search_dev(pcistr, &cnt, PCI_VENDOR_ID_INTEL,
619                     PCI_DEVICE_ID_INTEL_SRC);
620     gdth_search_dev(pcistr, &cnt, PCI_VENDOR_ID_INTEL,
621                     PCI_DEVICE_ID_INTEL_SRC_XSCALE);
622     return cnt;
623 }
624
625 /* Vortex only makes RAID controllers.
626  * We do not really want to specify all 550 ids here, so wildcard match.
627  */
628 static struct pci_device_id gdthtable[] __maybe_unused = {
629     {PCI_VENDOR_ID_VORTEX,PCI_ANY_ID,PCI_ANY_ID, PCI_ANY_ID},
630     {PCI_VENDOR_ID_INTEL,PCI_DEVICE_ID_INTEL_SRC,PCI_ANY_ID,PCI_ANY_ID}, 
631     {PCI_VENDOR_ID_INTEL,PCI_DEVICE_ID_INTEL_SRC_XSCALE,PCI_ANY_ID,PCI_ANY_ID}, 
632     {0}
633 };
634 MODULE_DEVICE_TABLE(pci,gdthtable);
635
636 static void __init gdth_search_dev(gdth_pci_str *pcistr, ushort *cnt,
637                                    ushort vendor, ushort device)
638 {
639     ulong base0, base1, base2;
640     struct pci_dev *pdev;
641     
642     TRACE(("gdth_search_dev() cnt %d vendor %x device %x\n",
643           *cnt, vendor, device));
644
645     pdev = NULL;
646     while ((pdev = pci_find_device(vendor, device, pdev)) 
647            != NULL) {
648         if (pci_enable_device(pdev))
649             continue;
650         if (*cnt >= MAXHA)
651             return;
652         /* GDT PCI controller found, resources are already in pdev */
653         pcistr[*cnt].pdev = pdev;
654         pcistr[*cnt].irq = pdev->irq;
655         base0 = pci_resource_flags(pdev, 0);
656         base1 = pci_resource_flags(pdev, 1);
657         base2 = pci_resource_flags(pdev, 2);
658         if (device <= PCI_DEVICE_ID_VORTEX_GDT6000B ||   /* GDT6000/B */
659             device >= PCI_DEVICE_ID_VORTEX_GDT6x17RP) {  /* MPR */
660             if (!(base0 & IORESOURCE_MEM)) 
661                 continue;
662             pcistr[*cnt].dpmem = pci_resource_start(pdev, 0);
663         } else {                                  /* GDT6110, GDT6120, .. */
664             if (!(base0 & IORESOURCE_MEM) ||
665                 !(base2 & IORESOURCE_MEM) ||
666                 !(base1 & IORESOURCE_IO)) 
667                 continue;
668             pcistr[*cnt].dpmem = pci_resource_start(pdev, 2);
669             pcistr[*cnt].io_mm = pci_resource_start(pdev, 0);
670             pcistr[*cnt].io    = pci_resource_start(pdev, 1);
671         }
672         TRACE2(("Controller found at %d/%d, irq %d, dpmem 0x%lx\n",
673                 pcistr[*cnt].pdev->bus->number,
674                 PCI_SLOT(pcistr[*cnt].pdev->devfn),
675                 pcistr[*cnt].irq, pcistr[*cnt].dpmem));
676         (*cnt)++;
677     }       
678 }   
679
680 static void __init gdth_sort_pci(gdth_pci_str *pcistr, int cnt)
681 {    
682     gdth_pci_str temp;
683     int i, changed;
684     
685     TRACE(("gdth_sort_pci() cnt %d\n",cnt));
686     if (cnt == 0)
687         return;
688
689     do {
690         changed = FALSE;
691         for (i = 0; i < cnt-1; ++i) {
692             if (!reverse_scan) {
693                 if ((pcistr[i].pdev->bus->number > pcistr[i+1].pdev->bus->number) ||
694                     (pcistr[i].pdev->bus->number == pcistr[i+1].pdev->bus->number &&
695                      PCI_SLOT(pcistr[i].pdev->devfn) >
696                      PCI_SLOT(pcistr[i+1].pdev->devfn))) {
697                     temp = pcistr[i];
698                     pcistr[i] = pcistr[i+1];
699                     pcistr[i+1] = temp;
700                     changed = TRUE;
701                 }
702             } else {
703                 if ((pcistr[i].pdev->bus->number < pcistr[i+1].pdev->bus->number) ||
704                     (pcistr[i].pdev->bus->number == pcistr[i+1].pdev->bus->number &&
705                      PCI_SLOT(pcistr[i].pdev->devfn) <
706                      PCI_SLOT(pcistr[i+1].pdev->devfn))) {
707                     temp = pcistr[i];
708                     pcistr[i] = pcistr[i+1];
709                     pcistr[i+1] = temp;
710                     changed = TRUE;
711                 }
712             }
713         }
714     } while (changed);
715 }
716 #endif /* CONFIG_PCI */
717
718 #ifdef CONFIG_EISA
719 static int __init gdth_init_eisa(ushort eisa_adr,gdth_ha_str *ha)
720 {
721     ulong32 retries,id;
722     unchar prot_ver,eisacf,i,irq_found;
723
724     TRACE(("gdth_init_eisa() adr. %x\n",eisa_adr));
725     
726     /* disable board interrupts, deinitialize services */
727     outb(0xff,eisa_adr+EDOORREG);
728     outb(0x00,eisa_adr+EDENABREG);
729     outb(0x00,eisa_adr+EINTENABREG);
730     
731     outb(0xff,eisa_adr+LDOORREG);
732     retries = INIT_RETRIES;
733     gdth_delay(20);
734     while (inb(eisa_adr+EDOORREG) != 0xff) {
735         if (--retries == 0) {
736             printk("GDT-EISA: Initialization error (DEINIT failed)\n");
737             return 0;
738         }
739         gdth_delay(1);
740         TRACE2(("wait for DEINIT: retries=%d\n",retries));
741     }
742     prot_ver = inb(eisa_adr+MAILBOXREG);
743     outb(0xff,eisa_adr+EDOORREG);
744     if (prot_ver != PROTOCOL_VERSION) {
745         printk("GDT-EISA: Illegal protocol version\n");
746         return 0;
747     }
748     ha->bmic = eisa_adr;
749     ha->brd_phys = (ulong32)eisa_adr >> 12;
750
751     outl(0,eisa_adr+MAILBOXREG);
752     outl(0,eisa_adr+MAILBOXREG+4);
753     outl(0,eisa_adr+MAILBOXREG+8);
754     outl(0,eisa_adr+MAILBOXREG+12);
755
756     /* detect IRQ */ 
757     if ((id = inl(eisa_adr+ID0REG)) == GDT3_ID) {
758         ha->oem_id = OEM_ID_ICP;
759         ha->type = GDT_EISA;
760         ha->stype = id;
761         outl(1,eisa_adr+MAILBOXREG+8);
762         outb(0xfe,eisa_adr+LDOORREG);
763         retries = INIT_RETRIES;
764         gdth_delay(20);
765         while (inb(eisa_adr+EDOORREG) != 0xfe) {
766             if (--retries == 0) {
767                 printk("GDT-EISA: Initialization error (get IRQ failed)\n");
768                 return 0;
769             }
770             gdth_delay(1);
771         }
772         ha->irq = inb(eisa_adr+MAILBOXREG);
773         outb(0xff,eisa_adr+EDOORREG);
774         TRACE2(("GDT3000/3020: IRQ=%d\n",ha->irq));
775         /* check the result */
776         if (ha->irq == 0) {
777                 TRACE2(("Unknown IRQ, use IRQ table from cmd line !\n"));
778                 for (i = 0, irq_found = FALSE; 
779                      i < MAXHA && irq[i] != 0xff; ++i) {
780                 if (irq[i]==10 || irq[i]==11 || irq[i]==12 || irq[i]==14) {
781                     irq_found = TRUE;
782                     break;
783                 }
784                 }
785             if (irq_found) {
786                 ha->irq = irq[i];
787                 irq[i] = 0;
788                 printk("GDT-EISA: Can not detect controller IRQ,\n");
789                 printk("Use IRQ setting from command line (IRQ = %d)\n",
790                        ha->irq);
791             } else {
792                 printk("GDT-EISA: Initialization error (unknown IRQ), Enable\n");
793                 printk("the controller BIOS or use command line parameters\n");
794                 return 0;
795             }
796         }
797     } else {
798         eisacf = inb(eisa_adr+EISAREG) & 7;
799         if (eisacf > 4)                         /* level triggered */
800             eisacf -= 4;
801         ha->irq = gdth_irq_tab[eisacf];
802         ha->oem_id = OEM_ID_ICP;
803         ha->type = GDT_EISA;
804         ha->stype = id;
805     }
806
807     ha->dma64_support = 0;
808     return 1;
809 }
810 #endif /* CONFIG_EISA */
811
812 #ifdef CONFIG_ISA
813 static int __init gdth_init_isa(ulong32 bios_adr,gdth_ha_str *ha)
814 {
815     register gdt2_dpram_str __iomem *dp2_ptr;
816     int i;
817     unchar irq_drq,prot_ver;
818     ulong32 retries;
819
820     TRACE(("gdth_init_isa() bios adr. %x\n",bios_adr));
821
822     ha->brd = ioremap(bios_adr, sizeof(gdt2_dpram_str));
823     if (ha->brd == NULL) {
824         printk("GDT-ISA: Initialization error (DPMEM remap error)\n");
825         return 0;
826     }
827     dp2_ptr = ha->brd;
828     writeb(1, &dp2_ptr->io.memlock); /* switch off write protection */
829     /* reset interface area */
830     memset_io(&dp2_ptr->u, 0, sizeof(dp2_ptr->u));
831     if (readl(&dp2_ptr->u) != 0) {
832         printk("GDT-ISA: Initialization error (DPMEM write error)\n");
833         iounmap(ha->brd);
834         return 0;
835     }
836
837     /* disable board interrupts, read DRQ and IRQ */
838     writeb(0xff, &dp2_ptr->io.irqdel);
839     writeb(0x00, &dp2_ptr->io.irqen);
840     writeb(0x00, &dp2_ptr->u.ic.S_Status);
841     writeb(0x00, &dp2_ptr->u.ic.Cmd_Index);
842
843     irq_drq = readb(&dp2_ptr->io.rq);
844     for (i=0; i<3; ++i) {
845         if ((irq_drq & 1)==0)
846             break;
847         irq_drq >>= 1;
848     }
849     ha->drq = gdth_drq_tab[i];
850
851     irq_drq = readb(&dp2_ptr->io.rq) >> 3;
852     for (i=1; i<5; ++i) {
853         if ((irq_drq & 1)==0)
854             break;
855         irq_drq >>= 1;
856     }
857     ha->irq = gdth_irq_tab[i];
858
859     /* deinitialize services */
860     writel(bios_adr, &dp2_ptr->u.ic.S_Info[0]);
861     writeb(0xff, &dp2_ptr->u.ic.S_Cmd_Indx);
862     writeb(0, &dp2_ptr->io.event);
863     retries = INIT_RETRIES;
864     gdth_delay(20);
865     while (readb(&dp2_ptr->u.ic.S_Status) != 0xff) {
866         if (--retries == 0) {
867             printk("GDT-ISA: Initialization error (DEINIT failed)\n");
868             iounmap(ha->brd);
869             return 0;
870         }
871         gdth_delay(1);
872     }
873     prot_ver = (unchar)readl(&dp2_ptr->u.ic.S_Info[0]);
874     writeb(0, &dp2_ptr->u.ic.Status);
875     writeb(0xff, &dp2_ptr->io.irqdel);
876     if (prot_ver != PROTOCOL_VERSION) {
877         printk("GDT-ISA: Illegal protocol version\n");
878         iounmap(ha->brd);
879         return 0;
880     }
881
882     ha->oem_id = OEM_ID_ICP;
883     ha->type = GDT_ISA;
884     ha->ic_all_size = sizeof(dp2_ptr->u);
885     ha->stype= GDT2_ID;
886     ha->brd_phys = bios_adr >> 4;
887
888     /* special request to controller BIOS */
889     writel(0x00, &dp2_ptr->u.ic.S_Info[0]);
890     writel(0x00, &dp2_ptr->u.ic.S_Info[1]);
891     writel(0x01, &dp2_ptr->u.ic.S_Info[2]);
892     writel(0x00, &dp2_ptr->u.ic.S_Info[3]);
893     writeb(0xfe, &dp2_ptr->u.ic.S_Cmd_Indx);
894     writeb(0, &dp2_ptr->io.event);
895     retries = INIT_RETRIES;
896     gdth_delay(20);
897     while (readb(&dp2_ptr->u.ic.S_Status) != 0xfe) {
898         if (--retries == 0) {
899             printk("GDT-ISA: Initialization error\n");
900             iounmap(ha->brd);
901             return 0;
902         }
903         gdth_delay(1);
904     }
905     writeb(0, &dp2_ptr->u.ic.Status);
906     writeb(0xff, &dp2_ptr->io.irqdel);
907
908     ha->dma64_support = 0;
909     return 1;
910 }
911 #endif /* CONFIG_ISA */
912
913 #ifdef CONFIG_PCI
914 static int __init gdth_init_pci(gdth_pci_str *pcistr,gdth_ha_str *ha)
915 {
916     register gdt6_dpram_str __iomem *dp6_ptr;
917     register gdt6c_dpram_str __iomem *dp6c_ptr;
918     register gdt6m_dpram_str __iomem *dp6m_ptr;
919     ulong32 retries;
920     unchar prot_ver;
921     ushort command;
922     int i, found = FALSE;
923
924     TRACE(("gdth_init_pci()\n"));
925
926     if (pcistr->pdev->vendor == PCI_VENDOR_ID_INTEL)
927         ha->oem_id = OEM_ID_INTEL;
928     else
929         ha->oem_id = OEM_ID_ICP;
930     ha->brd_phys = (pcistr->pdev->bus->number << 8) | (pcistr->pdev->devfn & 0xf8);
931     ha->stype = (ulong32)pcistr->pdev->device;
932     ha->irq = pcistr->irq;
933     ha->pdev = pcistr->pdev;
934     
935     if (ha->pdev->device <= PCI_DEVICE_ID_VORTEX_GDT6000B) {  /* GDT6000/B */
936         TRACE2(("init_pci() dpmem %lx irq %d\n",pcistr->dpmem,ha->irq));
937         ha->brd = ioremap(pcistr->dpmem, sizeof(gdt6_dpram_str));
938         if (ha->brd == NULL) {
939             printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
940             return 0;
941         }
942         /* check and reset interface area */
943         dp6_ptr = ha->brd;
944         writel(DPMEM_MAGIC, &dp6_ptr->u);
945         if (readl(&dp6_ptr->u) != DPMEM_MAGIC) {
946             printk("GDT-PCI: Cannot access DPMEM at 0x%lx (shadowed?)\n", 
947                    pcistr->dpmem);
948             found = FALSE;
949             for (i = 0xC8000; i < 0xE8000; i += 0x4000) {
950                 iounmap(ha->brd);
951                 ha->brd = ioremap(i, sizeof(ushort)); 
952                 if (ha->brd == NULL) {
953                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
954                     return 0;
955                 }
956                 if (readw(ha->brd) != 0xffff) {
957                     TRACE2(("init_pci_old() address 0x%x busy\n", i));
958                     continue;
959                 }
960                 iounmap(ha->brd);
961                 pci_write_config_dword(pcistr->pdev, 
962                                        PCI_BASE_ADDRESS_0, i);
963                 ha->brd = ioremap(i, sizeof(gdt6_dpram_str)); 
964                 if (ha->brd == NULL) {
965                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
966                     return 0;
967                 }
968                 dp6_ptr = ha->brd;
969                 writel(DPMEM_MAGIC, &dp6_ptr->u);
970                 if (readl(&dp6_ptr->u) == DPMEM_MAGIC) {
971                     printk("GDT-PCI: Use free address at 0x%x\n", i);
972                     found = TRUE;
973                     break;
974                 }
975             }   
976             if (!found) {
977                 printk("GDT-PCI: No free address found!\n");
978                 iounmap(ha->brd);
979                 return 0;
980             }
981         }
982         memset_io(&dp6_ptr->u, 0, sizeof(dp6_ptr->u));
983         if (readl(&dp6_ptr->u) != 0) {
984             printk("GDT-PCI: Initialization error (DPMEM write error)\n");
985             iounmap(ha->brd);
986             return 0;
987         }
988         
989         /* disable board interrupts, deinit services */
990         writeb(0xff, &dp6_ptr->io.irqdel);
991         writeb(0x00, &dp6_ptr->io.irqen);
992         writeb(0x00, &dp6_ptr->u.ic.S_Status);
993         writeb(0x00, &dp6_ptr->u.ic.Cmd_Index);
994
995         writel(pcistr->dpmem, &dp6_ptr->u.ic.S_Info[0]);
996         writeb(0xff, &dp6_ptr->u.ic.S_Cmd_Indx);
997         writeb(0, &dp6_ptr->io.event);
998         retries = INIT_RETRIES;
999         gdth_delay(20);
1000         while (readb(&dp6_ptr->u.ic.S_Status) != 0xff) {
1001             if (--retries == 0) {
1002                 printk("GDT-PCI: Initialization error (DEINIT failed)\n");
1003                 iounmap(ha->brd);
1004                 return 0;
1005             }
1006             gdth_delay(1);
1007         }
1008         prot_ver = (unchar)readl(&dp6_ptr->u.ic.S_Info[0]);
1009         writeb(0, &dp6_ptr->u.ic.S_Status);
1010         writeb(0xff, &dp6_ptr->io.irqdel);
1011         if (prot_ver != PROTOCOL_VERSION) {
1012             printk("GDT-PCI: Illegal protocol version\n");
1013             iounmap(ha->brd);
1014             return 0;
1015         }
1016
1017         ha->type = GDT_PCI;
1018         ha->ic_all_size = sizeof(dp6_ptr->u);
1019         
1020         /* special command to controller BIOS */
1021         writel(0x00, &dp6_ptr->u.ic.S_Info[0]);
1022         writel(0x00, &dp6_ptr->u.ic.S_Info[1]);
1023         writel(0x00, &dp6_ptr->u.ic.S_Info[2]);
1024         writel(0x00, &dp6_ptr->u.ic.S_Info[3]);
1025         writeb(0xfe, &dp6_ptr->u.ic.S_Cmd_Indx);
1026         writeb(0, &dp6_ptr->io.event);
1027         retries = INIT_RETRIES;
1028         gdth_delay(20);
1029         while (readb(&dp6_ptr->u.ic.S_Status) != 0xfe) {
1030             if (--retries == 0) {
1031                 printk("GDT-PCI: Initialization error\n");
1032                 iounmap(ha->brd);
1033                 return 0;
1034             }
1035             gdth_delay(1);
1036         }
1037         writeb(0, &dp6_ptr->u.ic.S_Status);
1038         writeb(0xff, &dp6_ptr->io.irqdel);
1039
1040         ha->dma64_support = 0;
1041
1042     } else if (ha->pdev->device <= PCI_DEVICE_ID_VORTEX_GDT6555) { /* GDT6110, ... */
1043         ha->plx = (gdt6c_plx_regs *)pcistr->io;
1044         TRACE2(("init_pci_new() dpmem %lx irq %d\n",
1045             pcistr->dpmem,ha->irq));
1046         ha->brd = ioremap(pcistr->dpmem, sizeof(gdt6c_dpram_str));
1047         if (ha->brd == NULL) {
1048             printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1049             iounmap(ha->brd);
1050             return 0;
1051         }
1052         /* check and reset interface area */
1053         dp6c_ptr = ha->brd;
1054         writel(DPMEM_MAGIC, &dp6c_ptr->u);
1055         if (readl(&dp6c_ptr->u) != DPMEM_MAGIC) {
1056             printk("GDT-PCI: Cannot access DPMEM at 0x%lx (shadowed?)\n", 
1057                    pcistr->dpmem);
1058             found = FALSE;
1059             for (i = 0xC8000; i < 0xE8000; i += 0x4000) {
1060                 iounmap(ha->brd);
1061                 ha->brd = ioremap(i, sizeof(ushort)); 
1062                 if (ha->brd == NULL) {
1063                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1064                     return 0;
1065                 }
1066                 if (readw(ha->brd) != 0xffff) {
1067                     TRACE2(("init_pci_plx() address 0x%x busy\n", i));
1068                     continue;
1069                 }
1070                 iounmap(ha->brd);
1071                 pci_write_config_dword(pcistr->pdev, 
1072                                        PCI_BASE_ADDRESS_2, i);
1073                 ha->brd = ioremap(i, sizeof(gdt6c_dpram_str)); 
1074                 if (ha->brd == NULL) {
1075                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1076                     return 0;
1077                 }
1078                 dp6c_ptr = ha->brd;
1079                 writel(DPMEM_MAGIC, &dp6c_ptr->u);
1080                 if (readl(&dp6c_ptr->u) == DPMEM_MAGIC) {
1081                     printk("GDT-PCI: Use free address at 0x%x\n", i);
1082                     found = TRUE;
1083                     break;
1084                 }
1085             }   
1086             if (!found) {
1087                 printk("GDT-PCI: No free address found!\n");
1088                 iounmap(ha->brd);
1089                 return 0;
1090             }
1091         }
1092         memset_io(&dp6c_ptr->u, 0, sizeof(dp6c_ptr->u));
1093         if (readl(&dp6c_ptr->u) != 0) {
1094             printk("GDT-PCI: Initialization error (DPMEM write error)\n");
1095             iounmap(ha->brd);
1096             return 0;
1097         }
1098         
1099         /* disable board interrupts, deinit services */
1100         outb(0x00,PTR2USHORT(&ha->plx->control1));
1101         outb(0xff,PTR2USHORT(&ha->plx->edoor_reg));
1102         
1103         writeb(0x00, &dp6c_ptr->u.ic.S_Status);
1104         writeb(0x00, &dp6c_ptr->u.ic.Cmd_Index);
1105
1106         writel(pcistr->dpmem, &dp6c_ptr->u.ic.S_Info[0]);
1107         writeb(0xff, &dp6c_ptr->u.ic.S_Cmd_Indx);
1108
1109         outb(1,PTR2USHORT(&ha->plx->ldoor_reg));
1110
1111         retries = INIT_RETRIES;
1112         gdth_delay(20);
1113         while (readb(&dp6c_ptr->u.ic.S_Status) != 0xff) {
1114             if (--retries == 0) {
1115                 printk("GDT-PCI: Initialization error (DEINIT failed)\n");
1116                 iounmap(ha->brd);
1117                 return 0;
1118             }
1119             gdth_delay(1);
1120         }
1121         prot_ver = (unchar)readl(&dp6c_ptr->u.ic.S_Info[0]);
1122         writeb(0, &dp6c_ptr->u.ic.Status);
1123         if (prot_ver != PROTOCOL_VERSION) {
1124             printk("GDT-PCI: Illegal protocol version\n");
1125             iounmap(ha->brd);
1126             return 0;
1127         }
1128
1129         ha->type = GDT_PCINEW;
1130         ha->ic_all_size = sizeof(dp6c_ptr->u);
1131
1132         /* special command to controller BIOS */
1133         writel(0x00, &dp6c_ptr->u.ic.S_Info[0]);
1134         writel(0x00, &dp6c_ptr->u.ic.S_Info[1]);
1135         writel(0x00, &dp6c_ptr->u.ic.S_Info[2]);
1136         writel(0x00, &dp6c_ptr->u.ic.S_Info[3]);
1137         writeb(0xfe, &dp6c_ptr->u.ic.S_Cmd_Indx);
1138         
1139         outb(1,PTR2USHORT(&ha->plx->ldoor_reg));
1140
1141         retries = INIT_RETRIES;
1142         gdth_delay(20);
1143         while (readb(&dp6c_ptr->u.ic.S_Status) != 0xfe) {
1144             if (--retries == 0) {
1145                 printk("GDT-PCI: Initialization error\n");
1146                 iounmap(ha->brd);
1147                 return 0;
1148             }
1149             gdth_delay(1);
1150         }
1151         writeb(0, &dp6c_ptr->u.ic.S_Status);
1152
1153         ha->dma64_support = 0;
1154
1155     } else {                                            /* MPR */
1156         TRACE2(("init_pci_mpr() dpmem %lx irq %d\n",pcistr->dpmem,ha->irq));
1157         ha->brd = ioremap(pcistr->dpmem, sizeof(gdt6m_dpram_str));
1158         if (ha->brd == NULL) {
1159             printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1160             return 0;
1161         }
1162
1163         /* manipulate config. space to enable DPMEM, start RP controller */
1164         pci_read_config_word(pcistr->pdev, PCI_COMMAND, &command);
1165         command |= 6;
1166         pci_write_config_word(pcistr->pdev, PCI_COMMAND, command);
1167         if (pci_resource_start(pcistr->pdev, 8) == 1UL)
1168             pci_resource_start(pcistr->pdev, 8) = 0UL;
1169         i = 0xFEFF0001UL;
1170         pci_write_config_dword(pcistr->pdev, PCI_ROM_ADDRESS, i);
1171         gdth_delay(1);
1172         pci_write_config_dword(pcistr->pdev, PCI_ROM_ADDRESS,
1173                                pci_resource_start(pcistr->pdev, 8));
1174         
1175         dp6m_ptr = ha->brd;
1176
1177         /* Ensure that it is safe to access the non HW portions of DPMEM.
1178          * Aditional check needed for Xscale based RAID controllers */
1179         while( ((int)readb(&dp6m_ptr->i960r.sema0_reg) ) & 3 )
1180             gdth_delay(1);
1181         
1182         /* check and reset interface area */
1183         writel(DPMEM_MAGIC, &dp6m_ptr->u);
1184         if (readl(&dp6m_ptr->u) != DPMEM_MAGIC) {
1185             printk("GDT-PCI: Cannot access DPMEM at 0x%lx (shadowed?)\n", 
1186                    pcistr->dpmem);
1187             found = FALSE;
1188             for (i = 0xC8000; i < 0xE8000; i += 0x4000) {
1189                 iounmap(ha->brd);
1190                 ha->brd = ioremap(i, sizeof(ushort)); 
1191                 if (ha->brd == NULL) {
1192                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1193                     return 0;
1194                 }
1195                 if (readw(ha->brd) != 0xffff) {
1196                     TRACE2(("init_pci_mpr() address 0x%x busy\n", i));
1197                     continue;
1198                 }
1199                 iounmap(ha->brd);
1200                 pci_write_config_dword(pcistr->pdev, 
1201                                        PCI_BASE_ADDRESS_0, i);
1202                 ha->brd = ioremap(i, sizeof(gdt6m_dpram_str)); 
1203                 if (ha->brd == NULL) {
1204                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1205                     return 0;
1206                 }
1207                 dp6m_ptr = ha->brd;
1208                 writel(DPMEM_MAGIC, &dp6m_ptr->u);
1209                 if (readl(&dp6m_ptr->u) == DPMEM_MAGIC) {
1210                     printk("GDT-PCI: Use free address at 0x%x\n", i);
1211                     found = TRUE;
1212                     break;
1213                 }
1214             }   
1215             if (!found) {
1216                 printk("GDT-PCI: No free address found!\n");
1217                 iounmap(ha->brd);
1218                 return 0;
1219             }
1220         }
1221         memset_io(&dp6m_ptr->u, 0, sizeof(dp6m_ptr->u));
1222         
1223         /* disable board interrupts, deinit services */
1224         writeb(readb(&dp6m_ptr->i960r.edoor_en_reg) | 4,
1225                     &dp6m_ptr->i960r.edoor_en_reg);
1226         writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
1227         writeb(0x00, &dp6m_ptr->u.ic.S_Status);
1228         writeb(0x00, &dp6m_ptr->u.ic.Cmd_Index);
1229
1230         writel(pcistr->dpmem, &dp6m_ptr->u.ic.S_Info[0]);
1231         writeb(0xff, &dp6m_ptr->u.ic.S_Cmd_Indx);
1232         writeb(1, &dp6m_ptr->i960r.ldoor_reg);
1233         retries = INIT_RETRIES;
1234         gdth_delay(20);
1235         while (readb(&dp6m_ptr->u.ic.S_Status) != 0xff) {
1236             if (--retries == 0) {
1237                 printk("GDT-PCI: Initialization error (DEINIT failed)\n");
1238                 iounmap(ha->brd);
1239                 return 0;
1240             }
1241             gdth_delay(1);
1242         }
1243         prot_ver = (unchar)readl(&dp6m_ptr->u.ic.S_Info[0]);
1244         writeb(0, &dp6m_ptr->u.ic.S_Status);
1245         if (prot_ver != PROTOCOL_VERSION) {
1246             printk("GDT-PCI: Illegal protocol version\n");
1247             iounmap(ha->brd);
1248             return 0;
1249         }
1250
1251         ha->type = GDT_PCIMPR;
1252         ha->ic_all_size = sizeof(dp6m_ptr->u);
1253         
1254         /* special command to controller BIOS */
1255         writel(0x00, &dp6m_ptr->u.ic.S_Info[0]);
1256         writel(0x00, &dp6m_ptr->u.ic.S_Info[1]);
1257         writel(0x00, &dp6m_ptr->u.ic.S_Info[2]);
1258         writel(0x00, &dp6m_ptr->u.ic.S_Info[3]);
1259         writeb(0xfe, &dp6m_ptr->u.ic.S_Cmd_Indx);
1260         writeb(1, &dp6m_ptr->i960r.ldoor_reg);
1261         retries = INIT_RETRIES;
1262         gdth_delay(20);
1263         while (readb(&dp6m_ptr->u.ic.S_Status) != 0xfe) {
1264             if (--retries == 0) {
1265                 printk("GDT-PCI: Initialization error\n");
1266                 iounmap(ha->brd);
1267                 return 0;
1268             }
1269             gdth_delay(1);
1270         }
1271         writeb(0, &dp6m_ptr->u.ic.S_Status);
1272
1273         /* read FW version to detect 64-bit DMA support */
1274         writeb(0xfd, &dp6m_ptr->u.ic.S_Cmd_Indx);
1275         writeb(1, &dp6m_ptr->i960r.ldoor_reg);
1276         retries = INIT_RETRIES;
1277         gdth_delay(20);
1278         while (readb(&dp6m_ptr->u.ic.S_Status) != 0xfd) {
1279             if (--retries == 0) {
1280                 printk("GDT-PCI: Initialization error (DEINIT failed)\n");
1281                 iounmap(ha->brd);
1282                 return 0;
1283             }
1284             gdth_delay(1);
1285         }
1286         prot_ver = (unchar)(readl(&dp6m_ptr->u.ic.S_Info[0]) >> 16);
1287         writeb(0, &dp6m_ptr->u.ic.S_Status);
1288         if (prot_ver < 0x2b)      /* FW < x.43: no 64-bit DMA support */
1289             ha->dma64_support = 0;
1290         else 
1291             ha->dma64_support = 1;
1292     }
1293
1294     return 1;
1295 }
1296 #endif /* CONFIG_PCI */
1297
1298 /* controller protocol functions */
1299
1300 static void __init gdth_enable_int(gdth_ha_str *ha)
1301 {
1302     ulong flags;
1303     gdt2_dpram_str __iomem *dp2_ptr;
1304     gdt6_dpram_str __iomem *dp6_ptr;
1305     gdt6m_dpram_str __iomem *dp6m_ptr;
1306
1307     TRACE(("gdth_enable_int() hanum %d\n",ha->hanum));
1308     spin_lock_irqsave(&ha->smp_lock, flags);
1309
1310     if (ha->type == GDT_EISA) {
1311         outb(0xff, ha->bmic + EDOORREG);
1312         outb(0xff, ha->bmic + EDENABREG);
1313         outb(0x01, ha->bmic + EINTENABREG);
1314     } else if (ha->type == GDT_ISA) {
1315         dp2_ptr = ha->brd;
1316         writeb(1, &dp2_ptr->io.irqdel);
1317         writeb(0, &dp2_ptr->u.ic.Cmd_Index);
1318         writeb(1, &dp2_ptr->io.irqen);
1319     } else if (ha->type == GDT_PCI) {
1320         dp6_ptr = ha->brd;
1321         writeb(1, &dp6_ptr->io.irqdel);
1322         writeb(0, &dp6_ptr->u.ic.Cmd_Index);
1323         writeb(1, &dp6_ptr->io.irqen);
1324     } else if (ha->type == GDT_PCINEW) {
1325         outb(0xff, PTR2USHORT(&ha->plx->edoor_reg));
1326         outb(0x03, PTR2USHORT(&ha->plx->control1));
1327     } else if (ha->type == GDT_PCIMPR) {
1328         dp6m_ptr = ha->brd;
1329         writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
1330         writeb(readb(&dp6m_ptr->i960r.edoor_en_reg) & ~4,
1331                     &dp6m_ptr->i960r.edoor_en_reg);
1332     }
1333     spin_unlock_irqrestore(&ha->smp_lock, flags);
1334 }
1335
1336 /* return IStatus if interrupt was from this card else 0 */
1337 static unchar gdth_get_status(gdth_ha_str *ha, int irq)
1338 {
1339     unchar IStatus = 0;
1340
1341     TRACE(("gdth_get_status() irq %d ctr_count %d\n", irq, gdth_ctr_count));
1342
1343         if (ha->irq != (unchar)irq)             /* check IRQ */
1344             return false;
1345         if (ha->type == GDT_EISA)
1346             IStatus = inb((ushort)ha->bmic + EDOORREG);
1347         else if (ha->type == GDT_ISA)
1348             IStatus =
1349                 readb(&((gdt2_dpram_str __iomem *)ha->brd)->u.ic.Cmd_Index);
1350         else if (ha->type == GDT_PCI)
1351             IStatus =
1352                 readb(&((gdt6_dpram_str __iomem *)ha->brd)->u.ic.Cmd_Index);
1353         else if (ha->type == GDT_PCINEW) 
1354             IStatus = inb(PTR2USHORT(&ha->plx->edoor_reg));
1355         else if (ha->type == GDT_PCIMPR)
1356             IStatus =
1357                 readb(&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.edoor_reg);
1358
1359         return IStatus;
1360 }
1361
1362 static int gdth_test_busy(gdth_ha_str *ha)
1363 {
1364     register int gdtsema0 = 0;
1365
1366     TRACE(("gdth_test_busy() hanum %d\n", ha->hanum));
1367
1368     if (ha->type == GDT_EISA)
1369         gdtsema0 = (int)inb(ha->bmic + SEMA0REG);
1370     else if (ha->type == GDT_ISA)
1371         gdtsema0 = (int)readb(&((gdt2_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
1372     else if (ha->type == GDT_PCI)
1373         gdtsema0 = (int)readb(&((gdt6_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
1374     else if (ha->type == GDT_PCINEW) 
1375         gdtsema0 = (int)inb(PTR2USHORT(&ha->plx->sema0_reg));
1376     else if (ha->type == GDT_PCIMPR)
1377         gdtsema0 = 
1378             (int)readb(&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.sema0_reg);
1379
1380     return (gdtsema0 & 1);
1381 }
1382
1383
1384 static int gdth_get_cmd_index(gdth_ha_str *ha)
1385 {
1386     int i;
1387
1388     TRACE(("gdth_get_cmd_index() hanum %d\n", ha->hanum));
1389
1390     for (i=0; i<GDTH_MAXCMDS; ++i) {
1391         if (ha->cmd_tab[i].cmnd == UNUSED_CMND) {
1392             ha->cmd_tab[i].cmnd = ha->pccb->RequestBuffer;
1393             ha->cmd_tab[i].service = ha->pccb->Service;
1394             ha->pccb->CommandIndex = (ulong32)i+2;
1395             return (i+2);
1396         }
1397     }
1398     return 0;
1399 }
1400
1401
1402 static void gdth_set_sema0(gdth_ha_str *ha)
1403 {
1404     TRACE(("gdth_set_sema0() hanum %d\n", ha->hanum));
1405
1406     if (ha->type == GDT_EISA) {
1407         outb(1, ha->bmic + SEMA0REG);
1408     } else if (ha->type == GDT_ISA) {
1409         writeb(1, &((gdt2_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
1410     } else if (ha->type == GDT_PCI) {
1411         writeb(1, &((gdt6_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
1412     } else if (ha->type == GDT_PCINEW) { 
1413         outb(1, PTR2USHORT(&ha->plx->sema0_reg));
1414     } else if (ha->type == GDT_PCIMPR) {
1415         writeb(1, &((gdt6m_dpram_str __iomem *)ha->brd)->i960r.sema0_reg);
1416     }
1417 }
1418
1419
1420 static void gdth_copy_command(gdth_ha_str *ha)
1421 {
1422     register gdth_cmd_str *cmd_ptr;
1423     register gdt6m_dpram_str __iomem *dp6m_ptr;
1424     register gdt6c_dpram_str __iomem *dp6c_ptr;
1425     gdt6_dpram_str __iomem *dp6_ptr;
1426     gdt2_dpram_str __iomem *dp2_ptr;
1427     ushort cp_count,dp_offset,cmd_no;
1428     
1429     TRACE(("gdth_copy_command() hanum %d\n", ha->hanum));
1430
1431     cp_count = ha->cmd_len;
1432     dp_offset= ha->cmd_offs_dpmem;
1433     cmd_no   = ha->cmd_cnt;
1434     cmd_ptr  = ha->pccb;
1435
1436     ++ha->cmd_cnt;                                                      
1437     if (ha->type == GDT_EISA)
1438         return;                                 /* no DPMEM, no copy */
1439
1440     /* set cpcount dword aligned */
1441     if (cp_count & 3)
1442         cp_count += (4 - (cp_count & 3));
1443
1444     ha->cmd_offs_dpmem += cp_count;
1445     
1446     /* set offset and service, copy command to DPMEM */
1447     if (ha->type == GDT_ISA) {
1448         dp2_ptr = ha->brd;
1449         writew(dp_offset + DPMEM_COMMAND_OFFSET,
1450                     &dp2_ptr->u.ic.comm_queue[cmd_no].offset);
1451         writew((ushort)cmd_ptr->Service,
1452                     &dp2_ptr->u.ic.comm_queue[cmd_no].serv_id);
1453         memcpy_toio(&dp2_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
1454     } else if (ha->type == GDT_PCI) {
1455         dp6_ptr = ha->brd;
1456         writew(dp_offset + DPMEM_COMMAND_OFFSET,
1457                     &dp6_ptr->u.ic.comm_queue[cmd_no].offset);
1458         writew((ushort)cmd_ptr->Service,
1459                     &dp6_ptr->u.ic.comm_queue[cmd_no].serv_id);
1460         memcpy_toio(&dp6_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
1461     } else if (ha->type == GDT_PCINEW) {
1462         dp6c_ptr = ha->brd;
1463         writew(dp_offset + DPMEM_COMMAND_OFFSET,
1464                     &dp6c_ptr->u.ic.comm_queue[cmd_no].offset);
1465         writew((ushort)cmd_ptr->Service,
1466                     &dp6c_ptr->u.ic.comm_queue[cmd_no].serv_id);
1467         memcpy_toio(&dp6c_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
1468     } else if (ha->type == GDT_PCIMPR) {
1469         dp6m_ptr = ha->brd;
1470         writew(dp_offset + DPMEM_COMMAND_OFFSET,
1471                     &dp6m_ptr->u.ic.comm_queue[cmd_no].offset);
1472         writew((ushort)cmd_ptr->Service,
1473                     &dp6m_ptr->u.ic.comm_queue[cmd_no].serv_id);
1474         memcpy_toio(&dp6m_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
1475     }
1476 }
1477
1478
1479 static void gdth_release_event(gdth_ha_str *ha)
1480 {
1481     TRACE(("gdth_release_event() hanum %d\n", ha->hanum));
1482
1483 #ifdef GDTH_STATISTICS
1484     {
1485         ulong32 i,j;
1486         for (i=0,j=0; j<GDTH_MAXCMDS; ++j) {
1487             if (ha->cmd_tab[j].cmnd != UNUSED_CMND)
1488                 ++i;
1489         }
1490         if (max_index < i) {
1491             max_index = i;
1492             TRACE3(("GDT: max_index = %d\n",(ushort)i));
1493         }
1494     }
1495 #endif
1496
1497     if (ha->pccb->OpCode == GDT_INIT)
1498         ha->pccb->Service |= 0x80;
1499
1500     if (ha->type == GDT_EISA) {
1501         if (ha->pccb->OpCode == GDT_INIT)               /* store DMA buffer */
1502             outl(ha->ccb_phys, ha->bmic + MAILBOXREG);
1503         outb(ha->pccb->Service, ha->bmic + LDOORREG);
1504     } else if (ha->type == GDT_ISA) {
1505         writeb(0, &((gdt2_dpram_str __iomem *)ha->brd)->io.event);
1506     } else if (ha->type == GDT_PCI) {
1507         writeb(0, &((gdt6_dpram_str __iomem *)ha->brd)->io.event);
1508     } else if (ha->type == GDT_PCINEW) { 
1509         outb(1, PTR2USHORT(&ha->plx->ldoor_reg));
1510     } else if (ha->type == GDT_PCIMPR) {
1511         writeb(1, &((gdt6m_dpram_str __iomem *)ha->brd)->i960r.ldoor_reg);
1512     }
1513 }
1514
1515 static int gdth_wait(gdth_ha_str *ha, int index, ulong32 time)
1516 {
1517     int answer_found = FALSE;
1518     int wait_index = 0;
1519
1520     TRACE(("gdth_wait() hanum %d index %d time %d\n", ha->hanum, index, time));
1521
1522     if (index == 0)
1523         return 1;                               /* no wait required */
1524
1525     do {
1526         __gdth_interrupt(ha, (int)ha->irq, true, &wait_index);
1527         if (wait_index == index) {
1528             answer_found = TRUE;
1529             break;
1530         }
1531         gdth_delay(1);
1532     } while (--time);
1533
1534     while (gdth_test_busy(ha))
1535         gdth_delay(0);
1536
1537     return (answer_found);
1538 }
1539
1540
1541 static int gdth_internal_cmd(gdth_ha_str *ha, unchar service, ushort opcode,
1542                                             ulong32 p1, ulong64 p2, ulong64 p3)
1543 {
1544     register gdth_cmd_str *cmd_ptr;
1545     int retries,index;
1546
1547     TRACE2(("gdth_internal_cmd() service %d opcode %d\n",service,opcode));
1548
1549     cmd_ptr = ha->pccb;
1550     memset((char*)cmd_ptr,0,sizeof(gdth_cmd_str));
1551
1552     /* make command  */
1553     for (retries = INIT_RETRIES;;) {
1554         cmd_ptr->Service          = service;
1555         cmd_ptr->RequestBuffer    = INTERNAL_CMND;
1556         if (!(index=gdth_get_cmd_index(ha))) {
1557             TRACE(("GDT: No free command index found\n"));
1558             return 0;
1559         }
1560         gdth_set_sema0(ha);
1561         cmd_ptr->OpCode           = opcode;
1562         cmd_ptr->BoardNode        = LOCALBOARD;
1563         if (service == CACHESERVICE) {
1564             if (opcode == GDT_IOCTL) {
1565                 cmd_ptr->u.ioctl.subfunc = p1;
1566                 cmd_ptr->u.ioctl.channel = (ulong32)p2;
1567                 cmd_ptr->u.ioctl.param_size = (ushort)p3;
1568                 cmd_ptr->u.ioctl.p_param = ha->scratch_phys;
1569             } else {
1570                 if (ha->cache_feat & GDT_64BIT) {
1571                     cmd_ptr->u.cache64.DeviceNo = (ushort)p1;
1572                     cmd_ptr->u.cache64.BlockNo  = p2;
1573                 } else {
1574                     cmd_ptr->u.cache.DeviceNo = (ushort)p1;
1575                     cmd_ptr->u.cache.BlockNo  = (ulong32)p2;
1576                 }
1577             }
1578         } else if (service == SCSIRAWSERVICE) {
1579             if (ha->raw_feat & GDT_64BIT) {
1580                 cmd_ptr->u.raw64.direction  = p1;
1581                 cmd_ptr->u.raw64.bus        = (unchar)p2;
1582                 cmd_ptr->u.raw64.target     = (unchar)p3;
1583                 cmd_ptr->u.raw64.lun        = (unchar)(p3 >> 8);
1584             } else {
1585                 cmd_ptr->u.raw.direction  = p1;
1586                 cmd_ptr->u.raw.bus        = (unchar)p2;
1587                 cmd_ptr->u.raw.target     = (unchar)p3;
1588                 cmd_ptr->u.raw.lun        = (unchar)(p3 >> 8);
1589             }
1590         } else if (service == SCREENSERVICE) {
1591             if (opcode == GDT_REALTIME) {
1592                 *(ulong32 *)&cmd_ptr->u.screen.su.data[0] = p1;
1593                 *(ulong32 *)&cmd_ptr->u.screen.su.data[4] = (ulong32)p2;
1594                 *(ulong32 *)&cmd_ptr->u.screen.su.data[8] = (ulong32)p3;
1595             }
1596         }
1597         ha->cmd_len          = sizeof(gdth_cmd_str);
1598         ha->cmd_offs_dpmem   = 0;
1599         ha->cmd_cnt          = 0;
1600         gdth_copy_command(ha);
1601         gdth_release_event(ha);
1602         gdth_delay(20);
1603         if (!gdth_wait(ha, index, INIT_TIMEOUT)) {
1604             printk("GDT: Initialization error (timeout service %d)\n",service);
1605             return 0;
1606         }
1607         if (ha->status != S_BSY || --retries == 0)
1608             break;
1609         gdth_delay(1);   
1610     }   
1611     
1612     return (ha->status != S_OK ? 0:1);
1613 }
1614     
1615
1616 /* search for devices */
1617
1618 static int __init gdth_search_drives(gdth_ha_str *ha)
1619 {
1620     ushort cdev_cnt, i;
1621     int ok;
1622     ulong32 bus_no, drv_cnt, drv_no, j;
1623     gdth_getch_str *chn;
1624     gdth_drlist_str *drl;
1625     gdth_iochan_str *ioc;
1626     gdth_raw_iochan_str *iocr;
1627     gdth_arcdl_str *alst;
1628     gdth_alist_str *alst2;
1629     gdth_oem_str_ioctl *oemstr;
1630 #ifdef INT_COAL
1631     gdth_perf_modes *pmod;
1632 #endif
1633
1634 #ifdef GDTH_RTC
1635     unchar rtc[12];
1636     ulong flags;
1637 #endif     
1638    
1639     TRACE(("gdth_search_drives() hanum %d\n", ha->hanum));
1640     ok = 0;
1641
1642     /* initialize controller services, at first: screen service */
1643     ha->screen_feat = 0;
1644     if (!force_dma32) {
1645         ok = gdth_internal_cmd(ha, SCREENSERVICE, GDT_X_INIT_SCR, 0, 0, 0);
1646         if (ok)
1647             ha->screen_feat = GDT_64BIT;
1648     }
1649     if (force_dma32 || (!ok && ha->status == (ushort)S_NOFUNC))
1650         ok = gdth_internal_cmd(ha, SCREENSERVICE, GDT_INIT, 0, 0, 0);
1651     if (!ok) {
1652         printk("GDT-HA %d: Initialization error screen service (code %d)\n",
1653                ha->hanum, ha->status);
1654         return 0;
1655     }
1656     TRACE2(("gdth_search_drives(): SCREENSERVICE initialized\n"));
1657
1658 #ifdef GDTH_RTC
1659     /* read realtime clock info, send to controller */
1660     /* 1. wait for the falling edge of update flag */
1661     spin_lock_irqsave(&rtc_lock, flags);
1662     for (j = 0; j < 1000000; ++j)
1663         if (CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP)
1664             break;
1665     for (j = 0; j < 1000000; ++j)
1666         if (!(CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP))
1667             break;
1668     /* 2. read info */
1669     do {
1670         for (j = 0; j < 12; ++j) 
1671             rtc[j] = CMOS_READ(j);
1672     } while (rtc[0] != CMOS_READ(0));
1673     spin_unlock_irqrestore(&rtc_lock, flags);
1674     TRACE2(("gdth_search_drives(): RTC: %x/%x/%x\n",*(ulong32 *)&rtc[0],
1675             *(ulong32 *)&rtc[4], *(ulong32 *)&rtc[8]));
1676     /* 3. send to controller firmware */
1677     gdth_internal_cmd(ha, SCREENSERVICE, GDT_REALTIME, *(ulong32 *)&rtc[0],
1678                       *(ulong32 *)&rtc[4], *(ulong32 *)&rtc[8]);
1679 #endif  
1680  
1681     /* unfreeze all IOs */
1682     gdth_internal_cmd(ha, CACHESERVICE, GDT_UNFREEZE_IO, 0, 0, 0);
1683  
1684     /* initialize cache service */
1685     ha->cache_feat = 0;
1686     if (!force_dma32) {
1687         ok = gdth_internal_cmd(ha, CACHESERVICE, GDT_X_INIT_HOST, LINUX_OS,
1688                                                                          0, 0);
1689         if (ok)
1690             ha->cache_feat = GDT_64BIT;
1691     }
1692     if (force_dma32 || (!ok && ha->status == (ushort)S_NOFUNC))
1693         ok = gdth_internal_cmd(ha, CACHESERVICE, GDT_INIT, LINUX_OS, 0, 0);
1694     if (!ok) {
1695         printk("GDT-HA %d: Initialization error cache service (code %d)\n",
1696                ha->hanum, ha->status);
1697         return 0;
1698     }
1699     TRACE2(("gdth_search_drives(): CACHESERVICE initialized\n"));
1700     cdev_cnt = (ushort)ha->info;
1701     ha->fw_vers = ha->service;
1702
1703 #ifdef INT_COAL
1704     if (ha->type == GDT_PCIMPR) {
1705         /* set perf. modes */
1706         pmod = (gdth_perf_modes *)ha->pscratch;
1707         pmod->version          = 1;
1708         pmod->st_mode          = 1;    /* enable one status buffer */
1709         *((ulong64 *)&pmod->st_buff_addr1) = ha->coal_stat_phys;
1710         pmod->st_buff_indx1    = COALINDEX;
1711         pmod->st_buff_addr2    = 0;
1712         pmod->st_buff_u_addr2  = 0;
1713         pmod->st_buff_indx2    = 0;
1714         pmod->st_buff_size     = sizeof(gdth_coal_status) * MAXOFFSETS;
1715         pmod->cmd_mode         = 0;    // disable all cmd buffers
1716         pmod->cmd_buff_addr1   = 0;
1717         pmod->cmd_buff_u_addr1 = 0;
1718         pmod->cmd_buff_indx1   = 0;
1719         pmod->cmd_buff_addr2   = 0;
1720         pmod->cmd_buff_u_addr2 = 0;
1721         pmod->cmd_buff_indx2   = 0;
1722         pmod->cmd_buff_size    = 0;
1723         pmod->reserved1        = 0;            
1724         pmod->reserved2        = 0;            
1725         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, SET_PERF_MODES,
1726                               INVALID_CHANNEL,sizeof(gdth_perf_modes))) {
1727             printk("GDT-HA %d: Interrupt coalescing activated\n", ha->hanum);
1728         }
1729     }
1730 #endif
1731
1732     /* detect number of buses - try new IOCTL */
1733     iocr = (gdth_raw_iochan_str *)ha->pscratch;
1734     iocr->hdr.version        = 0xffffffff;
1735     iocr->hdr.list_entries   = MAXBUS;
1736     iocr->hdr.first_chan     = 0;
1737     iocr->hdr.last_chan      = MAXBUS-1;
1738     iocr->hdr.list_offset    = GDTOFFSOF(gdth_raw_iochan_str, list[0]);
1739     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, IOCHAN_RAW_DESC,
1740                           INVALID_CHANNEL,sizeof(gdth_raw_iochan_str))) {
1741         TRACE2(("IOCHAN_RAW_DESC supported!\n"));
1742         ha->bus_cnt = iocr->hdr.chan_count;
1743         for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
1744             if (iocr->list[bus_no].proc_id < MAXID)
1745                 ha->bus_id[bus_no] = iocr->list[bus_no].proc_id;
1746             else
1747                 ha->bus_id[bus_no] = 0xff;
1748         }
1749     } else {
1750         /* old method */
1751         chn = (gdth_getch_str *)ha->pscratch;
1752         for (bus_no = 0; bus_no < MAXBUS; ++bus_no) {
1753             chn->channel_no = bus_no;
1754             if (!gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1755                                    SCSI_CHAN_CNT | L_CTRL_PATTERN,
1756                                    IO_CHANNEL | INVALID_CHANNEL,
1757                                    sizeof(gdth_getch_str))) {
1758                 if (bus_no == 0) {
1759                     printk("GDT-HA %d: Error detecting channel count (0x%x)\n",
1760                            ha->hanum, ha->status);
1761                     return 0;
1762                 }
1763                 break;
1764             }
1765             if (chn->siop_id < MAXID)
1766                 ha->bus_id[bus_no] = chn->siop_id;
1767             else
1768                 ha->bus_id[bus_no] = 0xff;
1769         }       
1770         ha->bus_cnt = (unchar)bus_no;
1771     }
1772     TRACE2(("gdth_search_drives() %d channels\n",ha->bus_cnt));
1773
1774     /* read cache configuration */
1775     if (!gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, CACHE_INFO,
1776                            INVALID_CHANNEL,sizeof(gdth_cinfo_str))) {
1777         printk("GDT-HA %d: Initialization error cache service (code %d)\n",
1778                ha->hanum, ha->status);
1779         return 0;
1780     }
1781     ha->cpar = ((gdth_cinfo_str *)ha->pscratch)->cpar;
1782     TRACE2(("gdth_search_drives() cinfo: vs %x sta %d str %d dw %d b %d\n",
1783             ha->cpar.version,ha->cpar.state,ha->cpar.strategy,
1784             ha->cpar.write_back,ha->cpar.block_size));
1785
1786     /* read board info and features */
1787     ha->more_proc = FALSE;
1788     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, BOARD_INFO,
1789                           INVALID_CHANNEL,sizeof(gdth_binfo_str))) {
1790         memcpy(&ha->binfo, (gdth_binfo_str *)ha->pscratch,
1791                sizeof(gdth_binfo_str));
1792         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, BOARD_FEATURES,
1793                               INVALID_CHANNEL,sizeof(gdth_bfeat_str))) {
1794             TRACE2(("BOARD_INFO/BOARD_FEATURES supported\n"));
1795             ha->bfeat = *(gdth_bfeat_str *)ha->pscratch;
1796             ha->more_proc = TRUE;
1797         }
1798     } else {
1799         TRACE2(("BOARD_INFO requires firmware >= 1.10/2.08\n"));
1800         strcpy(ha->binfo.type_string, gdth_ctr_name(ha));
1801     }
1802     TRACE2(("Controller name: %s\n",ha->binfo.type_string));
1803
1804     /* read more informations */
1805     if (ha->more_proc) {
1806         /* physical drives, channel addresses */
1807         ioc = (gdth_iochan_str *)ha->pscratch;
1808         ioc->hdr.version        = 0xffffffff;
1809         ioc->hdr.list_entries   = MAXBUS;
1810         ioc->hdr.first_chan     = 0;
1811         ioc->hdr.last_chan      = MAXBUS-1;
1812         ioc->hdr.list_offset    = GDTOFFSOF(gdth_iochan_str, list[0]);
1813         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, IOCHAN_DESC,
1814                               INVALID_CHANNEL,sizeof(gdth_iochan_str))) {
1815             for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
1816                 ha->raw[bus_no].address = ioc->list[bus_no].address;
1817                 ha->raw[bus_no].local_no = ioc->list[bus_no].local_no;
1818             }
1819         } else {
1820             for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
1821                 ha->raw[bus_no].address = IO_CHANNEL;
1822                 ha->raw[bus_no].local_no = bus_no;
1823             }
1824         }
1825         for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
1826             chn = (gdth_getch_str *)ha->pscratch;
1827             chn->channel_no = ha->raw[bus_no].local_no;
1828             if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1829                                   SCSI_CHAN_CNT | L_CTRL_PATTERN,
1830                                   ha->raw[bus_no].address | INVALID_CHANNEL,
1831                                   sizeof(gdth_getch_str))) {
1832                 ha->raw[bus_no].pdev_cnt = chn->drive_cnt;
1833                 TRACE2(("Channel %d: %d phys. drives\n",
1834                         bus_no,chn->drive_cnt));
1835             }
1836             if (ha->raw[bus_no].pdev_cnt > 0) {
1837                 drl = (gdth_drlist_str *)ha->pscratch;
1838                 drl->sc_no = ha->raw[bus_no].local_no;
1839                 drl->sc_cnt = ha->raw[bus_no].pdev_cnt;
1840                 if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1841                                       SCSI_DR_LIST | L_CTRL_PATTERN,
1842                                       ha->raw[bus_no].address | INVALID_CHANNEL,
1843                                       sizeof(gdth_drlist_str))) {
1844                     for (j = 0; j < ha->raw[bus_no].pdev_cnt; ++j) 
1845                         ha->raw[bus_no].id_list[j] = drl->sc_list[j];
1846                 } else {
1847                     ha->raw[bus_no].pdev_cnt = 0;
1848                 }
1849             }
1850         }
1851
1852         /* logical drives */
1853         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, CACHE_DRV_CNT,
1854                               INVALID_CHANNEL,sizeof(ulong32))) {
1855             drv_cnt = *(ulong32 *)ha->pscratch;
1856             if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, CACHE_DRV_LIST,
1857                                   INVALID_CHANNEL,drv_cnt * sizeof(ulong32))) {
1858                 for (j = 0; j < drv_cnt; ++j) {
1859                     drv_no = ((ulong32 *)ha->pscratch)[j];
1860                     if (drv_no < MAX_LDRIVES) {
1861                         ha->hdr[drv_no].is_logdrv = TRUE;
1862                         TRACE2(("Drive %d is log. drive\n",drv_no));
1863                     }
1864                 }
1865             }
1866             alst = (gdth_arcdl_str *)ha->pscratch;
1867             alst->entries_avail = MAX_LDRIVES;
1868             alst->first_entry = 0;
1869             alst->list_offset = GDTOFFSOF(gdth_arcdl_str, list[0]);
1870             if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1871                                   ARRAY_DRV_LIST2 | LA_CTRL_PATTERN, 
1872                                   INVALID_CHANNEL, sizeof(gdth_arcdl_str) +
1873                                   (alst->entries_avail-1) * sizeof(gdth_alist_str))) { 
1874                 for (j = 0; j < alst->entries_init; ++j) {
1875                     ha->hdr[j].is_arraydrv = alst->list[j].is_arrayd;
1876                     ha->hdr[j].is_master = alst->list[j].is_master;
1877                     ha->hdr[j].is_parity = alst->list[j].is_parity;
1878                     ha->hdr[j].is_hotfix = alst->list[j].is_hotfix;
1879                     ha->hdr[j].master_no = alst->list[j].cd_handle;
1880                 }
1881             } else if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1882                                          ARRAY_DRV_LIST | LA_CTRL_PATTERN,
1883                                          0, 35 * sizeof(gdth_alist_str))) {
1884                 for (j = 0; j < 35; ++j) {
1885                     alst2 = &((gdth_alist_str *)ha->pscratch)[j];
1886                     ha->hdr[j].is_arraydrv = alst2->is_arrayd;
1887                     ha->hdr[j].is_master = alst2->is_master;
1888                     ha->hdr[j].is_parity = alst2->is_parity;
1889                     ha->hdr[j].is_hotfix = alst2->is_hotfix;
1890                     ha->hdr[j].master_no = alst2->cd_handle;
1891                 }
1892             }
1893         }
1894     }       
1895                                   
1896     /* initialize raw service */
1897     ha->raw_feat = 0;
1898     if (!force_dma32) {
1899         ok = gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_X_INIT_RAW, 0, 0, 0);
1900         if (ok)
1901             ha->raw_feat = GDT_64BIT;
1902     }
1903     if (force_dma32 || (!ok && ha->status == (ushort)S_NOFUNC))
1904         ok = gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_INIT, 0, 0, 0);
1905     if (!ok) {
1906         printk("GDT-HA %d: Initialization error raw service (code %d)\n",
1907                ha->hanum, ha->status);
1908         return 0;
1909     }
1910     TRACE2(("gdth_search_drives(): RAWSERVICE initialized\n"));
1911
1912     /* set/get features raw service (scatter/gather) */
1913     if (gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_SET_FEAT, SCATTER_GATHER,
1914                           0, 0)) {
1915         TRACE2(("gdth_search_drives(): set features RAWSERVICE OK\n"));
1916         if (gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_GET_FEAT, 0, 0, 0)) {
1917             TRACE2(("gdth_search_dr(): get feat RAWSERVICE %d\n",
1918                     ha->info));
1919             ha->raw_feat |= (ushort)ha->info;
1920         }
1921     } 
1922
1923     /* set/get features cache service (equal to raw service) */
1924     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_SET_FEAT, 0,
1925                           SCATTER_GATHER,0)) {
1926         TRACE2(("gdth_search_drives(): set features CACHESERVICE OK\n"));
1927         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_GET_FEAT, 0, 0, 0)) {
1928             TRACE2(("gdth_search_dr(): get feat CACHESERV. %d\n",
1929                     ha->info));
1930             ha->cache_feat |= (ushort)ha->info;
1931         }
1932     }
1933
1934     /* reserve drives for raw service */
1935     if (reserve_mode != 0) {
1936         gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_RESERVE_ALL,
1937                           reserve_mode == 1 ? 1 : 3, 0, 0);
1938         TRACE2(("gdth_search_drives(): RESERVE_ALL code %d\n", 
1939                 ha->status));
1940     }
1941     for (i = 0; i < MAX_RES_ARGS; i += 4) {
1942         if (reserve_list[i] == ha->hanum && reserve_list[i+1] < ha->bus_cnt &&
1943             reserve_list[i+2] < ha->tid_cnt && reserve_list[i+3] < MAXLUN) {
1944             TRACE2(("gdth_search_drives(): reserve ha %d bus %d id %d lun %d\n",
1945                     reserve_list[i], reserve_list[i+1],
1946                     reserve_list[i+2], reserve_list[i+3]));
1947             if (!gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_RESERVE, 0,
1948                                    reserve_list[i+1], reserve_list[i+2] | 
1949                                    (reserve_list[i+3] << 8))) {
1950                 printk("GDT-HA %d: Error raw service (RESERVE, code %d)\n",
1951                        ha->hanum, ha->status);
1952              }
1953         }
1954     }
1955
1956     /* Determine OEM string using IOCTL */
1957     oemstr = (gdth_oem_str_ioctl *)ha->pscratch;
1958     oemstr->params.ctl_version = 0x01;
1959     oemstr->params.buffer_size = sizeof(oemstr->text);
1960     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1961                           CACHE_READ_OEM_STRING_RECORD,INVALID_CHANNEL,
1962                           sizeof(gdth_oem_str_ioctl))) {
1963         TRACE2(("gdth_search_drives(): CACHE_READ_OEM_STRING_RECORD OK\n"));
1964         printk("GDT-HA %d: Vendor: %s Name: %s\n",
1965                ha->hanum, oemstr->text.oem_company_name, ha->binfo.type_string);
1966         /* Save the Host Drive inquiry data */
1967         strlcpy(ha->oem_name,oemstr->text.scsi_host_drive_inquiry_vendor_id,
1968                 sizeof(ha->oem_name));
1969     } else {
1970         /* Old method, based on PCI ID */
1971         TRACE2(("gdth_search_drives(): CACHE_READ_OEM_STRING_RECORD failed\n"));
1972         printk("GDT-HA %d: Name: %s\n",
1973                ha->hanum, ha->binfo.type_string);
1974         if (ha->oem_id == OEM_ID_INTEL)
1975             strlcpy(ha->oem_name,"Intel  ", sizeof(ha->oem_name));
1976         else
1977             strlcpy(ha->oem_name,"ICP    ", sizeof(ha->oem_name));
1978     }
1979
1980     /* scanning for host drives */
1981     for (i = 0; i < cdev_cnt; ++i) 
1982         gdth_analyse_hdrive(ha, i);
1983     
1984     TRACE(("gdth_search_drives() OK\n"));
1985     return 1;
1986 }
1987
1988 static int gdth_analyse_hdrive(gdth_ha_str *ha, ushort hdrive)
1989 {
1990     ulong32 drv_cyls;
1991     int drv_hds, drv_secs;
1992
1993     TRACE(("gdth_analyse_hdrive() hanum %d drive %d\n", ha->hanum, hdrive));
1994     if (hdrive >= MAX_HDRIVES)
1995         return 0;
1996
1997     if (!gdth_internal_cmd(ha, CACHESERVICE, GDT_INFO, hdrive, 0, 0))
1998         return 0;
1999     ha->hdr[hdrive].present = TRUE;
2000     ha->hdr[hdrive].size = ha->info;
2001    
2002     /* evaluate mapping (sectors per head, heads per cylinder) */
2003     ha->hdr[hdrive].size &= ~SECS32;
2004     if (ha->info2 == 0) {
2005         gdth_eval_mapping(ha->hdr[hdrive].size,&drv_cyls,&drv_hds,&drv_secs);
2006     } else {
2007         drv_hds = ha->info2 & 0xff;
2008         drv_secs = (ha->info2 >> 8) & 0xff;
2009         drv_cyls = (ulong32)ha->hdr[hdrive].size / drv_hds / drv_secs;
2010     }
2011     ha->hdr[hdrive].heads = (unchar)drv_hds;
2012     ha->hdr[hdrive].secs  = (unchar)drv_secs;
2013     /* round size */
2014     ha->hdr[hdrive].size  = drv_cyls * drv_hds * drv_secs;
2015     
2016     if (ha->cache_feat & GDT_64BIT) {
2017         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_X_INFO, hdrive, 0, 0)
2018             && ha->info2 != 0) {
2019             ha->hdr[hdrive].size = ((ulong64)ha->info2 << 32) | ha->info;
2020         }
2021     }
2022     TRACE2(("gdth_search_dr() cdr. %d size %d hds %d scs %d\n",
2023             hdrive,ha->hdr[hdrive].size,drv_hds,drv_secs));
2024
2025     /* get informations about device */
2026     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_DEVTYPE, hdrive, 0, 0)) {
2027         TRACE2(("gdth_search_dr() cache drive %d devtype %d\n",
2028                 hdrive,ha->info));
2029         ha->hdr[hdrive].devtype = (ushort)ha->info;
2030     }
2031
2032     /* cluster info */
2033     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_CLUST_INFO, hdrive, 0, 0)) {
2034         TRACE2(("gdth_search_dr() cache drive %d cluster info %d\n",
2035                 hdrive,ha->info));
2036         if (!shared_access)
2037             ha->hdr[hdrive].cluster_type = (unchar)ha->info;
2038     }
2039
2040     /* R/W attributes */
2041     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_RW_ATTRIBS, hdrive, 0, 0)) {
2042         TRACE2(("gdth_search_dr() cache drive %d r/w attrib. %d\n",
2043                 hdrive,ha->info));
2044         ha->hdr[hdrive].rw_attribs = (unchar)ha->info;
2045     }
2046
2047     return 1;
2048 }
2049
2050
2051 /* command queueing/sending functions */
2052
2053 static void gdth_putq(gdth_ha_str *ha, Scsi_Cmnd *scp, unchar priority)
2054 {
2055     struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
2056     register Scsi_Cmnd *pscp;
2057     register Scsi_Cmnd *nscp;
2058     ulong flags;
2059     unchar b, t;
2060
2061     TRACE(("gdth_putq() priority %d\n",priority));
2062     spin_lock_irqsave(&ha->smp_lock, flags);
2063
2064     if (!cmndinfo->internal_command) {
2065         cmndinfo->priority = priority;
2066         b = scp->device->channel;
2067         t = scp->device->id;
2068         if (priority >= DEFAULT_PRI) {
2069             if ((b != ha->virt_bus && ha->raw[BUS_L2P(ha,b)].lock) ||
2070                 (b==ha->virt_bus && t<MAX_HDRIVES && ha->hdr[t].lock)) {
2071                 TRACE2(("gdth_putq(): locked IO ->update_timeout()\n"));
2072                 cmndinfo->timeout = gdth_update_timeout(scp, 0);
2073             }
2074         }
2075     }
2076
2077     if (ha->req_first==NULL) {
2078         ha->req_first = scp;                    /* queue was empty */
2079         scp->SCp.ptr = NULL;
2080     } else {                                    /* queue not empty */
2081         pscp = ha->req_first;
2082         nscp = (Scsi_Cmnd *)pscp->SCp.ptr;
2083         /* priority: 0-highest,..,0xff-lowest */
2084         while (nscp && gdth_cmnd_priv(nscp)->priority <= priority) {
2085             pscp = nscp;
2086             nscp = (Scsi_Cmnd *)pscp->SCp.ptr;
2087         }
2088         pscp->SCp.ptr = (char *)scp;
2089         scp->SCp.ptr  = (char *)nscp;
2090     }
2091     spin_unlock_irqrestore(&ha->smp_lock, flags);
2092
2093 #ifdef GDTH_STATISTICS
2094     flags = 0;
2095     for (nscp=ha->req_first; nscp; nscp=(Scsi_Cmnd*)nscp->SCp.ptr)
2096         ++flags;
2097     if (max_rq < flags) {
2098         max_rq = flags;
2099         TRACE3(("GDT: max_rq = %d\n",(ushort)max_rq));
2100     }
2101 #endif
2102 }
2103
2104 static void gdth_next(gdth_ha_str *ha)
2105 {
2106     register Scsi_Cmnd *pscp;
2107     register Scsi_Cmnd *nscp;
2108     unchar b, t, l, firsttime;
2109     unchar this_cmd, next_cmd;
2110     ulong flags = 0;
2111     int cmd_index;
2112
2113     TRACE(("gdth_next() hanum %d\n", ha->hanum));
2114     if (!gdth_polling) 
2115         spin_lock_irqsave(&ha->smp_lock, flags);
2116
2117     ha->cmd_cnt = ha->cmd_offs_dpmem = 0;
2118     this_cmd = firsttime = TRUE;
2119     next_cmd = gdth_polling ? FALSE:TRUE;
2120     cmd_index = 0;
2121
2122     for (nscp = pscp = ha->req_first; nscp; nscp = (Scsi_Cmnd *)nscp->SCp.ptr) {
2123         struct gdth_cmndinfo *nscp_cmndinfo = gdth_cmnd_priv(nscp);
2124         if (nscp != pscp && nscp != (Scsi_Cmnd *)pscp->SCp.ptr)
2125             pscp = (Scsi_Cmnd *)pscp->SCp.ptr;
2126         if (!nscp_cmndinfo->internal_command) {
2127             b = nscp->device->channel;
2128             t = nscp->device->id;
2129             l = nscp->device->lun;
2130             if (nscp_cmndinfo->priority >= DEFAULT_PRI) {
2131                 if ((b != ha->virt_bus && ha->raw[BUS_L2P(ha,b)].lock) ||
2132                     (b == ha->virt_bus && t < MAX_HDRIVES && ha->hdr[t].lock))
2133                     continue;
2134             }
2135         } else
2136             b = t = l = 0;
2137
2138         if (firsttime) {
2139             if (gdth_test_busy(ha)) {        /* controller busy ? */
2140                 TRACE(("gdth_next() controller %d busy !\n", ha->hanum));
2141                 if (!gdth_polling) {
2142                     spin_unlock_irqrestore(&ha->smp_lock, flags);
2143                     return;
2144                 }
2145                 while (gdth_test_busy(ha))
2146                     gdth_delay(1);
2147             }   
2148             firsttime = FALSE;
2149         }
2150
2151         if (!nscp_cmndinfo->internal_command) {
2152         if (nscp_cmndinfo->phase == -1) {
2153             nscp_cmndinfo->phase = CACHESERVICE;           /* default: cache svc. */
2154             if (nscp->cmnd[0] == TEST_UNIT_READY) {
2155                 TRACE2(("TEST_UNIT_READY Bus %d Id %d LUN %d\n", 
2156                         b, t, l));
2157                 /* TEST_UNIT_READY -> set scan mode */
2158                 if ((ha->scan_mode & 0x0f) == 0) {
2159                     if (b == 0 && t == 0 && l == 0) {
2160                         ha->scan_mode |= 1;
2161                         TRACE2(("Scan mode: 0x%x\n", ha->scan_mode));
2162                     }
2163                 } else if ((ha->scan_mode & 0x0f) == 1) {
2164                     if (b == 0 && ((t == 0 && l == 1) ||
2165                          (t == 1 && l == 0))) {
2166                         nscp_cmndinfo->OpCode = GDT_SCAN_START;
2167                         nscp_cmndinfo->phase = ((ha->scan_mode & 0x10 ? 1:0) << 8)
2168                             | SCSIRAWSERVICE;
2169                         ha->scan_mode = 0x12;
2170                         TRACE2(("Scan mode: 0x%x (SCAN_START)\n", 
2171                                 ha->scan_mode));
2172                     } else {
2173                         ha->scan_mode &= 0x10;
2174                         TRACE2(("Scan mode: 0x%x\n", ha->scan_mode));
2175                     }                   
2176                 } else if (ha->scan_mode == 0x12) {
2177                     if (b == ha->bus_cnt && t == ha->tid_cnt-1) {
2178                         nscp_cmndinfo->phase = SCSIRAWSERVICE;
2179                         nscp_cmndinfo->OpCode = GDT_SCAN_END;
2180                         ha->scan_mode &= 0x10;
2181                         TRACE2(("Scan mode: 0x%x (SCAN_END)\n", 
2182                                 ha->scan_mode));
2183                     }
2184                 }
2185             }
2186             if (b == ha->virt_bus && nscp->cmnd[0] != INQUIRY &&
2187                 nscp->cmnd[0] != READ_CAPACITY && nscp->cmnd[0] != MODE_SENSE &&
2188                 (ha->hdr[t].cluster_type & CLUSTER_DRIVE)) {
2189                 /* always GDT_CLUST_INFO! */
2190                 nscp_cmndinfo->OpCode = GDT_CLUST_INFO;
2191             }
2192         }
2193         }
2194
2195         if (nscp_cmndinfo->OpCode != -1) {
2196             if ((nscp_cmndinfo->phase & 0xff) == CACHESERVICE) {
2197                 if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
2198                     this_cmd = FALSE;
2199                 next_cmd = FALSE;
2200             } else if ((nscp_cmndinfo->phase & 0xff) == SCSIRAWSERVICE) {
2201                 if (!(cmd_index=gdth_fill_raw_cmd(ha, nscp, BUS_L2P(ha, b))))
2202                     this_cmd = FALSE;
2203                 next_cmd = FALSE;
2204             } else {
2205                 memset((char*)nscp->sense_buffer,0,16);
2206                 nscp->sense_buffer[0] = 0x70;
2207                 nscp->sense_buffer[2] = NOT_READY;
2208                 nscp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
2209                 if (!nscp_cmndinfo->wait_for_completion)
2210                     nscp_cmndinfo->wait_for_completion++;
2211                 else
2212                     gdth_scsi_done(nscp);
2213             }
2214         } else if (gdth_cmnd_priv(nscp)->internal_command) {
2215             if (!(cmd_index=gdth_special_cmd(ha, nscp)))
2216                 this_cmd = FALSE;
2217             next_cmd = FALSE;
2218         } else if (b != ha->virt_bus) {
2219             if (ha->raw[BUS_L2P(ha,b)].io_cnt[t] >= GDTH_MAX_RAW ||
2220                 !(cmd_index=gdth_fill_raw_cmd(ha, nscp, BUS_L2P(ha, b))))
2221                 this_cmd = FALSE;
2222             else 
2223                 ha->raw[BUS_L2P(ha,b)].io_cnt[t]++;
2224         } else if (t >= MAX_HDRIVES || !ha->hdr[t].present || l != 0) {
2225             TRACE2(("Command 0x%x to bus %d id %d lun %d -> IGNORE\n",
2226                     nscp->cmnd[0], b, t, l));
2227             nscp->result = DID_BAD_TARGET << 16;
2228             if (!nscp_cmndinfo->wait_for_completion)
2229                 nscp_cmndinfo->wait_for_completion++;
2230             else
2231                 gdth_scsi_done(nscp);
2232         } else {
2233             switch (nscp->cmnd[0]) {
2234               case TEST_UNIT_READY:
2235               case INQUIRY:
2236               case REQUEST_SENSE:
2237               case READ_CAPACITY:
2238               case VERIFY:
2239               case START_STOP:
2240               case MODE_SENSE:
2241               case SERVICE_ACTION_IN:
2242                 TRACE(("cache cmd %x/%x/%x/%x/%x/%x\n",nscp->cmnd[0],
2243                        nscp->cmnd[1],nscp->cmnd[2],nscp->cmnd[3],
2244                        nscp->cmnd[4],nscp->cmnd[5]));
2245                 if (ha->hdr[t].media_changed && nscp->cmnd[0] != INQUIRY) {
2246                     /* return UNIT_ATTENTION */
2247                     TRACE2(("cmd 0x%x target %d: UNIT_ATTENTION\n",
2248                              nscp->cmnd[0], t));
2249                     ha->hdr[t].media_changed = FALSE;
2250                     memset((char*)nscp->sense_buffer,0,16);
2251                     nscp->sense_buffer[0] = 0x70;
2252                     nscp->sense_buffer[2] = UNIT_ATTENTION;
2253                     nscp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
2254                     if (!nscp_cmndinfo->wait_for_completion)
2255                         nscp_cmndinfo->wait_for_completion++;
2256                     else
2257                         gdth_scsi_done(nscp);
2258                 } else if (gdth_internal_cache_cmd(ha, nscp))
2259                     gdth_scsi_done(nscp);
2260                 break;
2261
2262               case ALLOW_MEDIUM_REMOVAL:
2263                 TRACE(("cache cmd %x/%x/%x/%x/%x/%x\n",nscp->cmnd[0],
2264                        nscp->cmnd[1],nscp->cmnd[2],nscp->cmnd[3],
2265                        nscp->cmnd[4],nscp->cmnd[5]));
2266                 if ( (nscp->cmnd[4]&1) && !(ha->hdr[t].devtype&1) ) {
2267                     TRACE(("Prevent r. nonremov. drive->do nothing\n"));
2268                     nscp->result = DID_OK << 16;
2269                     nscp->sense_buffer[0] = 0;
2270                     if (!nscp_cmndinfo->wait_for_completion)
2271                         nscp_cmndinfo->wait_for_completion++;
2272                     else
2273                         gdth_scsi_done(nscp);
2274                 } else {
2275                     nscp->cmnd[3] = (ha->hdr[t].devtype&1) ? 1:0;
2276                     TRACE(("Prevent/allow r. %d rem. drive %d\n",
2277                            nscp->cmnd[4],nscp->cmnd[3]));
2278                     if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
2279                         this_cmd = FALSE;
2280                 }
2281                 break;
2282                 
2283               case RESERVE:
2284               case RELEASE:
2285                 TRACE2(("cache cmd %s\n",nscp->cmnd[0] == RESERVE ?
2286                         "RESERVE" : "RELEASE"));
2287                 if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
2288                     this_cmd = FALSE;
2289                 break;
2290                 
2291               case READ_6:
2292               case WRITE_6:
2293               case READ_10:
2294               case WRITE_10:
2295               case READ_16:
2296               case WRITE_16:
2297                 if (ha->hdr[t].media_changed) {
2298                     /* return UNIT_ATTENTION */
2299                     TRACE2(("cmd 0x%x target %d: UNIT_ATTENTION\n",
2300                              nscp->cmnd[0], t));
2301                     ha->hdr[t].media_changed = FALSE;
2302                     memset((char*)nscp->sense_buffer,0,16);
2303                     nscp->sense_buffer[0] = 0x70;
2304                     nscp->sense_buffer[2] = UNIT_ATTENTION;
2305                     nscp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
2306                     if (!nscp_cmndinfo->wait_for_completion)
2307                         nscp_cmndinfo->wait_for_completion++;
2308                     else
2309                         gdth_scsi_done(nscp);
2310                 } else if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
2311                     this_cmd = FALSE;
2312                 break;
2313
2314               default:
2315                 TRACE2(("cache cmd %x/%x/%x/%x/%x/%x unknown\n",nscp->cmnd[0],
2316                         nscp->cmnd[1],nscp->cmnd[2],nscp->cmnd[3],
2317                         nscp->cmnd[4],nscp->cmnd[5]));
2318                 printk("GDT-HA %d: Unknown SCSI command 0x%x to cache service !\n",
2319                        ha->hanum, nscp->cmnd[0]);
2320                 nscp->result = DID_ABORT << 16;
2321                 if (!nscp_cmndinfo->wait_for_completion)
2322                     nscp_cmndinfo->wait_for_completion++;
2323                 else
2324                     gdth_scsi_done(nscp);
2325                 break;
2326             }
2327         }
2328
2329         if (!this_cmd)
2330             break;
2331         if (nscp == ha->req_first)
2332             ha->req_first = pscp = (Scsi_Cmnd *)nscp->SCp.ptr;
2333         else
2334             pscp->SCp.ptr = nscp->SCp.ptr;
2335         if (!next_cmd)
2336             break;
2337     }
2338
2339     if (ha->cmd_cnt > 0) {
2340         gdth_release_event(ha);
2341     }
2342
2343     if (!gdth_polling) 
2344         spin_unlock_irqrestore(&ha->smp_lock, flags);
2345
2346     if (gdth_polling && ha->cmd_cnt > 0) {
2347         if (!gdth_wait(ha, cmd_index, POLL_TIMEOUT))
2348             printk("GDT-HA %d: Command %d timed out !\n",
2349                    ha->hanum, cmd_index);
2350     }
2351 }
2352
2353 /*
2354  * gdth_copy_internal_data() - copy to/from a buffer onto a scsi_cmnd's
2355  * buffers, kmap_atomic() as needed.
2356  */
2357 static void gdth_copy_internal_data(gdth_ha_str *ha, Scsi_Cmnd *scp,
2358                                     char *buffer, ushort count, int to_buffer)
2359 {
2360     ushort cpcount,i, max_sg = gdth_sg_count(scp);
2361     ushort cpsum,cpnow;
2362     struct scatterlist *sl;
2363     char *address;
2364
2365     cpcount = min_t(ushort, count, gdth_bufflen(scp));
2366
2367     if (cpcount) {
2368         cpsum=0;
2369         scsi_for_each_sg(scp, sl, max_sg, i) {
2370             unsigned long flags;
2371             cpnow = (ushort)sl->length;
2372             TRACE(("copy_internal() now %d sum %d count %d %d\n",
2373                           cpnow, cpsum, cpcount, gdth_bufflen(scp)));
2374             if (cpsum+cpnow > cpcount) 
2375                 cpnow = cpcount - cpsum;
2376             cpsum += cpnow;
2377             if (!sg_page(sl)) {
2378                 printk("GDT-HA %d: invalid sc/gt element in gdth_copy_internal_data()\n",
2379                        ha->hanum);
2380                 return;
2381             }
2382             local_irq_save(flags);
2383             address = kmap_atomic(sg_page(sl), KM_BIO_SRC_IRQ) + sl->offset;
2384             if (to_buffer)
2385                 memcpy(buffer, address, cpnow);
2386             else
2387                 memcpy(address, buffer, cpnow);
2388             flush_dcache_page(sg_page(sl));
2389             kunmap_atomic(address, KM_BIO_SRC_IRQ);
2390             local_irq_restore(flags);
2391             if (cpsum == cpcount)
2392                 break;
2393             buffer += cpnow;
2394         }
2395     } else if (count) {
2396         printk("GDT-HA %d: SCSI command with no buffers but data transfer expected!\n",
2397                ha->hanum);
2398         WARN_ON(1);
2399     }
2400 }
2401
2402 static int gdth_internal_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp)
2403 {
2404     unchar t;
2405     gdth_inq_data inq;
2406     gdth_rdcap_data rdc;
2407     gdth_sense_data sd;
2408     gdth_modep_data mpd;
2409     struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
2410
2411     t  = scp->device->id;
2412     TRACE(("gdth_internal_cache_cmd() cmd 0x%x hdrive %d\n",
2413            scp->cmnd[0],t));
2414
2415     scp->result = DID_OK << 16;
2416     scp->sense_buffer[0] = 0;
2417
2418     switch (scp->cmnd[0]) {
2419       case TEST_UNIT_READY:
2420       case VERIFY:
2421       case START_STOP:
2422         TRACE2(("Test/Verify/Start hdrive %d\n",t));
2423         break;
2424
2425       case INQUIRY:
2426         TRACE2(("Inquiry hdrive %d devtype %d\n",
2427                 t,ha->hdr[t].devtype));
2428         inq.type_qual = (ha->hdr[t].devtype&4) ? TYPE_ROM:TYPE_DISK;
2429         /* you can here set all disks to removable, if you want to do
2430            a flush using the ALLOW_MEDIUM_REMOVAL command */
2431         inq.modif_rmb = 0x00;
2432         if ((ha->hdr[t].devtype & 1) ||
2433             (ha->hdr[t].cluster_type & CLUSTER_DRIVE))
2434             inq.modif_rmb = 0x80;
2435         inq.version   = 2;
2436         inq.resp_aenc = 2;
2437         inq.add_length= 32;
2438         strcpy(inq.vendor,ha->oem_name);
2439         sprintf(inq.product,"Host Drive  #%02d",t);
2440         strcpy(inq.revision,"   ");
2441         gdth_copy_internal_data(ha, scp, (char*)&inq, sizeof(gdth_inq_data), 0);
2442         break;
2443
2444       case REQUEST_SENSE:
2445         TRACE2(("Request sense hdrive %d\n",t));
2446         sd.errorcode = 0x70;
2447         sd.segno     = 0x00;
2448         sd.key       = NO_SENSE;
2449         sd.info      = 0;
2450         sd.add_length= 0;
2451         gdth_copy_internal_data(ha, scp, (char*)&sd, sizeof(gdth_sense_data), 0);
2452         break;
2453
2454       case MODE_SENSE:
2455         TRACE2(("Mode sense hdrive %d\n",t));
2456         memset((char*)&mpd,0,sizeof(gdth_modep_data));
2457         mpd.hd.data_length = sizeof(gdth_modep_data);
2458         mpd.hd.dev_par     = (ha->hdr[t].devtype&2) ? 0x80:0;
2459         mpd.hd.bd_length   = sizeof(mpd.bd);
2460         mpd.bd.block_length[0] = (SECTOR_SIZE & 0x00ff0000) >> 16;
2461         mpd.bd.block_length[1] = (SECTOR_SIZE & 0x0000ff00) >> 8;
2462         mpd.bd.block_length[2] = (SECTOR_SIZE & 0x000000ff);
2463         gdth_copy_internal_data(ha, scp, (char*)&mpd, sizeof(gdth_modep_data), 0);
2464         break;
2465
2466       case READ_CAPACITY:
2467         TRACE2(("Read capacity hdrive %d\n",t));
2468         if (ha->hdr[t].size > (ulong64)0xffffffff)
2469             rdc.last_block_no = 0xffffffff;
2470         else
2471             rdc.last_block_no = cpu_to_be32(ha->hdr[t].size-1);
2472         rdc.block_length  = cpu_to_be32(SECTOR_SIZE);
2473         gdth_copy_internal_data(ha, scp, (char*)&rdc, sizeof(gdth_rdcap_data), 0);
2474         break;
2475
2476       case SERVICE_ACTION_IN:
2477         if ((scp->cmnd[1] & 0x1f) == SAI_READ_CAPACITY_16 &&
2478             (ha->cache_feat & GDT_64BIT)) {
2479             gdth_rdcap16_data rdc16;
2480
2481             TRACE2(("Read capacity (16) hdrive %d\n",t));
2482             rdc16.last_block_no = cpu_to_be64(ha->hdr[t].size-1);
2483             rdc16.block_length  = cpu_to_be32(SECTOR_SIZE);
2484             gdth_copy_internal_data(ha, scp, (char*)&rdc16,
2485                                                  sizeof(gdth_rdcap16_data), 0);
2486         } else { 
2487             scp->result = DID_ABORT << 16;
2488         }
2489         break;
2490
2491       default:
2492         TRACE2(("Internal cache cmd 0x%x unknown\n",scp->cmnd[0]));
2493         break;
2494     }
2495
2496     if (!cmndinfo->wait_for_completion)
2497         cmndinfo->wait_for_completion++;
2498     else 
2499         return 1;
2500
2501     return 0;
2502 }
2503
2504 static int gdth_fill_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, ushort hdrive)
2505 {
2506     register gdth_cmd_str *cmdp;
2507     struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
2508     ulong32 cnt, blockcnt;
2509     ulong64 no, blockno;
2510     int i, cmd_index, read_write, sgcnt, mode64;
2511
2512     cmdp = ha->pccb;
2513     TRACE(("gdth_fill_cache_cmd() cmd 0x%x cmdsize %d hdrive %d\n",
2514                  scp->cmnd[0],scp->cmd_len,hdrive));
2515
2516     if (ha->type==GDT_EISA && ha->cmd_cnt>0) 
2517         return 0;
2518
2519     mode64 = (ha->cache_feat & GDT_64BIT) ? TRUE : FALSE;
2520     /* test for READ_16, WRITE_16 if !mode64 ? ---
2521        not required, should not occur due to error return on 
2522        READ_CAPACITY_16 */
2523
2524     cmdp->Service = CACHESERVICE;
2525     cmdp->RequestBuffer = scp;
2526     /* search free command index */
2527     if (!(cmd_index=gdth_get_cmd_index(ha))) {
2528         TRACE(("GDT: No free command index found\n"));
2529         return 0;
2530     }
2531     /* if it's the first command, set command semaphore */
2532     if (ha->cmd_cnt == 0)
2533         gdth_set_sema0(ha);
2534
2535     /* fill command */
2536     read_write = 0;
2537     if (cmndinfo->OpCode != -1)
2538         cmdp->OpCode = cmndinfo->OpCode;   /* special cache cmd. */
2539     else if (scp->cmnd[0] == RESERVE) 
2540         cmdp->OpCode = GDT_RESERVE_DRV;
2541     else if (scp->cmnd[0] == RELEASE)
2542         cmdp->OpCode = GDT_RELEASE_DRV;
2543     else if (scp->cmnd[0] == ALLOW_MEDIUM_REMOVAL) {
2544         if (scp->cmnd[4] & 1)                   /* prevent ? */
2545             cmdp->OpCode = GDT_MOUNT;
2546         else if (scp->cmnd[3] & 1)              /* removable drive ? */
2547             cmdp->OpCode = GDT_UNMOUNT;
2548         else
2549             cmdp->OpCode = GDT_FLUSH;
2550     } else if (scp->cmnd[0] == WRITE_6 || scp->cmnd[0] == WRITE_10 ||
2551                scp->cmnd[0] == WRITE_12 || scp->cmnd[0] == WRITE_16
2552     ) {
2553         read_write = 1;
2554         if (gdth_write_through || ((ha->hdr[hdrive].rw_attribs & 1) && 
2555                                    (ha->cache_feat & GDT_WR_THROUGH)))
2556             cmdp->OpCode = GDT_WRITE_THR;
2557         else
2558             cmdp->OpCode = GDT_WRITE;
2559     } else {
2560         read_write = 2;
2561         cmdp->OpCode = GDT_READ;
2562     }
2563
2564     cmdp->BoardNode = LOCALBOARD;
2565     if (mode64) {
2566         cmdp->u.cache64.DeviceNo = hdrive;
2567         cmdp->u.cache64.BlockNo  = 1;
2568         cmdp->u.cache64.sg_canz  = 0;
2569     } else {
2570         cmdp->u.cache.DeviceNo = hdrive;
2571         cmdp->u.cache.BlockNo  = 1;
2572         cmdp->u.cache.sg_canz  = 0;
2573     }
2574
2575     if (read_write) {
2576         if (scp->cmd_len == 16) {
2577             memcpy(&no, &scp->cmnd[2], sizeof(ulong64));
2578             blockno = be64_to_cpu(no);
2579             memcpy(&cnt, &scp->cmnd[10], sizeof(ulong32));
2580             blockcnt = be32_to_cpu(cnt);
2581         } else if (scp->cmd_len == 10) {
2582             memcpy(&no, &scp->cmnd[2], sizeof(ulong32));
2583             blockno = be32_to_cpu(no);
2584             memcpy(&cnt, &scp->cmnd[7], sizeof(ushort));
2585             blockcnt = be16_to_cpu(cnt);
2586         } else {
2587             memcpy(&no, &scp->cmnd[0], sizeof(ulong32));
2588             blockno = be32_to_cpu(no) & 0x001fffffUL;
2589             blockcnt= scp->cmnd[4]==0 ? 0x100 : scp->cmnd[4];
2590         }
2591         if (mode64) {
2592             cmdp->u.cache64.BlockNo = blockno;
2593             cmdp->u.cache64.BlockCnt = blockcnt;
2594         } else {
2595             cmdp->u.cache.BlockNo = (ulong32)blockno;
2596             cmdp->u.cache.BlockCnt = blockcnt;
2597         }
2598
2599         if (gdth_bufflen(scp)) {
2600             cmndinfo->dma_dir = (read_write == 1 ?
2601                 PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE);   
2602             sgcnt = pci_map_sg(ha->pdev, gdth_sglist(scp), gdth_sg_count(scp),
2603                                cmndinfo->dma_dir);
2604             if (mode64) {
2605                 struct scatterlist *sl;
2606
2607                 cmdp->u.cache64.DestAddr= (ulong64)-1;
2608                 cmdp->u.cache64.sg_canz = sgcnt;
2609                 scsi_for_each_sg(scp, sl, sgcnt, i) {
2610                     cmdp->u.cache64.sg_lst[i].sg_ptr = sg_dma_address(sl);
2611 #ifdef GDTH_DMA_STATISTICS
2612                     if (cmdp->u.cache64.sg_lst[i].sg_ptr > (ulong64)0xffffffff)
2613                         ha->dma64_cnt++;
2614                     else
2615                         ha->dma32_cnt++;
2616 #endif
2617                     cmdp->u.cache64.sg_lst[i].sg_len = sg_dma_len(sl);
2618                 }
2619             } else {
2620                 struct scatterlist *sl;
2621
2622                 cmdp->u.cache.DestAddr= 0xffffffff;
2623                 cmdp->u.cache.sg_canz = sgcnt;
2624                 scsi_for_each_sg(scp, sl, sgcnt, i) {
2625                     cmdp->u.cache.sg_lst[i].sg_ptr = sg_dma_address(sl);
2626 #ifdef GDTH_DMA_STATISTICS
2627                     ha->dma32_cnt++;
2628 #endif
2629                     cmdp->u.cache.sg_lst[i].sg_len = sg_dma_len(sl);
2630                 }
2631             }
2632
2633 #ifdef GDTH_STATISTICS
2634             if (max_sg < (ulong32)sgcnt) {
2635                 max_sg = (ulong32)sgcnt;
2636                 TRACE3(("GDT: max_sg = %d\n",max_sg));
2637             }
2638 #endif
2639
2640         }
2641     }
2642     /* evaluate command size, check space */
2643     if (mode64) {
2644         TRACE(("cache cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
2645                cmdp->u.cache64.DestAddr,cmdp->u.cache64.sg_canz,
2646                cmdp->u.cache64.sg_lst[0].sg_ptr,
2647                cmdp->u.cache64.sg_lst[0].sg_len));
2648         TRACE(("cache cmd: cmd %d blockno. %d, blockcnt %d\n",
2649                cmdp->OpCode,cmdp->u.cache64.BlockNo,cmdp->u.cache64.BlockCnt));
2650         ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.cache64.sg_lst) +
2651             (ushort)cmdp->u.cache64.sg_canz * sizeof(gdth_sg64_str);
2652     } else {
2653         TRACE(("cache cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
2654                cmdp->u.cache.DestAddr,cmdp->u.cache.sg_canz,
2655                cmdp->u.cache.sg_lst[0].sg_ptr,
2656                cmdp->u.cache.sg_lst[0].sg_len));
2657         TRACE(("cache cmd: cmd %d blockno. %d, blockcnt %d\n",
2658                cmdp->OpCode,cmdp->u.cache.BlockNo,cmdp->u.cache.BlockCnt));
2659         ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.cache.sg_lst) +
2660             (ushort)cmdp->u.cache.sg_canz * sizeof(gdth_sg_str);
2661     }
2662     if (ha->cmd_len & 3)
2663         ha->cmd_len += (4 - (ha->cmd_len & 3));
2664
2665     if (ha->cmd_cnt > 0) {
2666         if ((ha->cmd_offs_dpmem + ha->cmd_len + DPMEM_COMMAND_OFFSET) >
2667             ha->ic_all_size) {
2668             TRACE2(("gdth_fill_cache() DPMEM overflow\n"));
2669             ha->cmd_tab[cmd_index-2].cmnd = UNUSED_CMND;
2670             return 0;
2671         }
2672     }
2673
2674     /* copy command */
2675     gdth_copy_command(ha);
2676     return cmd_index;
2677 }
2678
2679 static int gdth_fill_raw_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, unchar b)
2680 {
2681     register gdth_cmd_str *cmdp;
2682     ushort i;
2683     dma_addr_t sense_paddr;
2684     int cmd_index, sgcnt, mode64;
2685     unchar t,l;
2686     struct page *page;
2687     ulong offset;
2688     struct gdth_cmndinfo *cmndinfo;
2689
2690     t = scp->device->id;
2691     l = scp->device->lun;
2692     cmdp = ha->pccb;
2693     TRACE(("gdth_fill_raw_cmd() cmd 0x%x bus %d ID %d LUN %d\n",
2694            scp->cmnd[0],b,t,l));
2695
2696     if (ha->type==GDT_EISA && ha->cmd_cnt>0) 
2697         return 0;
2698
2699     mode64 = (ha->raw_feat & GDT_64BIT) ? TRUE : FALSE;
2700
2701     cmdp->Service = SCSIRAWSERVICE;
2702     cmdp->RequestBuffer = scp;
2703     /* search free command index */
2704     if (!(cmd_index=gdth_get_cmd_index(ha))) {
2705         TRACE(("GDT: No free command index found\n"));
2706         return 0;
2707     }
2708     /* if it's the first command, set command semaphore */
2709     if (ha->cmd_cnt == 0)
2710         gdth_set_sema0(ha);
2711
2712     cmndinfo = gdth_cmnd_priv(scp);
2713     /* fill command */  
2714     if (cmndinfo->OpCode != -1) {
2715         cmdp->OpCode           = cmndinfo->OpCode; /* special raw cmd. */
2716         cmdp->BoardNode        = LOCALBOARD;
2717         if (mode64) {
2718             cmdp->u.raw64.direction = (cmndinfo->phase >> 8);
2719             TRACE2(("special raw cmd 0x%x param 0x%x\n", 
2720                     cmdp->OpCode, cmdp->u.raw64.direction));
2721             /* evaluate command size */
2722             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw64.sg_lst);
2723         } else {
2724             cmdp->u.raw.direction  = (cmndinfo->phase >> 8);
2725             TRACE2(("special raw cmd 0x%x param 0x%x\n", 
2726                     cmdp->OpCode, cmdp->u.raw.direction));
2727             /* evaluate command size */
2728             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw.sg_lst);
2729         }
2730
2731     } else {
2732         page = virt_to_page(scp->sense_buffer);
2733         offset = (ulong)scp->sense_buffer & ~PAGE_MASK;
2734         sense_paddr = pci_map_page(ha->pdev,page,offset,
2735                                    16,PCI_DMA_FROMDEVICE);
2736
2737         cmndinfo->sense_paddr  = sense_paddr;
2738         cmdp->OpCode           = GDT_WRITE;             /* always */
2739         cmdp->BoardNode        = LOCALBOARD;
2740         if (mode64) { 
2741             cmdp->u.raw64.reserved   = 0;
2742             cmdp->u.raw64.mdisc_time = 0;
2743             cmdp->u.raw64.mcon_time  = 0;
2744             cmdp->u.raw64.clen       = scp->cmd_len;
2745             cmdp->u.raw64.target     = t;
2746             cmdp->u.raw64.lun        = l;
2747             cmdp->u.raw64.bus        = b;
2748             cmdp->u.raw64.priority   = 0;
2749             cmdp->u.raw64.sdlen      = gdth_bufflen(scp);
2750             cmdp->u.raw64.sense_len  = 16;
2751             cmdp->u.raw64.sense_data = sense_paddr;
2752             cmdp->u.raw64.direction  = 
2753                 gdth_direction_tab[scp->cmnd[0]]==DOU ? GDTH_DATA_OUT:GDTH_DATA_IN;
2754             memcpy(cmdp->u.raw64.cmd,scp->cmnd,16);
2755             cmdp->u.raw64.sg_ranz    = 0;
2756         } else {
2757             cmdp->u.raw.reserved   = 0;
2758             cmdp->u.raw.mdisc_time = 0;
2759             cmdp->u.raw.mcon_time  = 0;
2760             cmdp->u.raw.clen       = scp->cmd_len;
2761             cmdp->u.raw.target     = t;
2762             cmdp->u.raw.lun        = l;
2763             cmdp->u.raw.bus        = b;
2764             cmdp->u.raw.priority   = 0;
2765             cmdp->u.raw.link_p     = 0;
2766             cmdp->u.raw.sdlen      = gdth_bufflen(scp);
2767             cmdp->u.raw.sense_len  = 16;
2768             cmdp->u.raw.sense_data = sense_paddr;
2769             cmdp->u.raw.direction  = 
2770                 gdth_direction_tab[scp->cmnd[0]]==DOU ? GDTH_DATA_OUT:GDTH_DATA_IN;
2771             memcpy(cmdp->u.raw.cmd,scp->cmnd,12);
2772             cmdp->u.raw.sg_ranz    = 0;
2773         }
2774
2775         if (gdth_bufflen(scp)) {
2776             cmndinfo->dma_dir = PCI_DMA_BIDIRECTIONAL;
2777             sgcnt = pci_map_sg(ha->pdev, gdth_sglist(scp), gdth_sg_count(scp),
2778                                cmndinfo->dma_dir);
2779             if (mode64) {
2780                 struct scatterlist *sl;
2781
2782                 cmdp->u.raw64.sdata = (ulong64)-1;
2783                 cmdp->u.raw64.sg_ranz = sgcnt;
2784                 scsi_for_each_sg(scp, sl, sgcnt, i) {
2785                     cmdp->u.raw64.sg_lst[i].sg_ptr = sg_dma_address(sl);
2786 #ifdef GDTH_DMA_STATISTICS
2787                     if (cmdp->u.raw64.sg_lst[i].sg_ptr > (ulong64)0xffffffff)
2788                         ha->dma64_cnt++;
2789                     else
2790                         ha->dma32_cnt++;
2791 #endif
2792                     cmdp->u.raw64.sg_lst[i].sg_len = sg_dma_len(sl);
2793                 }
2794             } else {
2795                 struct scatterlist *sl;
2796
2797                 cmdp->u.raw.sdata = 0xffffffff;
2798                 cmdp->u.raw.sg_ranz = sgcnt;
2799                 scsi_for_each_sg(scp, sl, sgcnt, i) {
2800                     cmdp->u.raw.sg_lst[i].sg_ptr = sg_dma_address(sl);
2801 #ifdef GDTH_DMA_STATISTICS
2802                     ha->dma32_cnt++;
2803 #endif
2804                     cmdp->u.raw.sg_lst[i].sg_len = sg_dma_len(sl);
2805                 }
2806             }
2807
2808 #ifdef GDTH_STATISTICS
2809             if (max_sg < sgcnt) {
2810                 max_sg = sgcnt;
2811                 TRACE3(("GDT: max_sg = %d\n",sgcnt));
2812             }
2813 #endif
2814
2815         }
2816         if (mode64) {
2817             TRACE(("raw cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
2818                    cmdp->u.raw64.sdata,cmdp->u.raw64.sg_ranz,
2819                    cmdp->u.raw64.sg_lst[0].sg_ptr,
2820                    cmdp->u.raw64.sg_lst[0].sg_len));
2821             /* evaluate command size */
2822             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw64.sg_lst) +
2823                 (ushort)cmdp->u.raw64.sg_ranz * sizeof(gdth_sg64_str);
2824         } else {
2825             TRACE(("raw cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
2826                    cmdp->u.raw.sdata,cmdp->u.raw.sg_ranz,
2827                    cmdp->u.raw.sg_lst[0].sg_ptr,
2828                    cmdp->u.raw.sg_lst[0].sg_len));
2829             /* evaluate command size */
2830             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw.sg_lst) +
2831                 (ushort)cmdp->u.raw.sg_ranz * sizeof(gdth_sg_str);
2832         }
2833     }
2834     /* check space */
2835     if (ha->cmd_len & 3)
2836         ha->cmd_len += (4 - (ha->cmd_len & 3));
2837
2838     if (ha->cmd_cnt > 0) {
2839         if ((ha->cmd_offs_dpmem + ha->cmd_len + DPMEM_COMMAND_OFFSET) >
2840             ha->ic_all_size) {
2841             TRACE2(("gdth_fill_raw() DPMEM overflow\n"));
2842             ha->cmd_tab[cmd_index-2].cmnd = UNUSED_CMND;
2843             return 0;
2844         }
2845     }
2846
2847     /* copy command */
2848     gdth_copy_command(ha);
2849     return cmd_index;
2850 }
2851
2852 static int gdth_special_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp)
2853 {
2854     register gdth_cmd_str *cmdp;
2855     int cmd_index;
2856
2857     cmdp= ha->pccb;
2858     TRACE2(("gdth_special_cmd(): "));
2859
2860     if (ha->type==GDT_EISA && ha->cmd_cnt>0) 
2861         return 0;
2862
2863     gdth_copy_internal_data(ha, scp, (char *)cmdp, sizeof(gdth_cmd_str), 1);
2864     cmdp->RequestBuffer = scp;
2865
2866     /* search free command index */
2867     if (!(cmd_index=gdth_get_cmd_index(ha))) {
2868         TRACE(("GDT: No free command index found\n"));
2869         return 0;
2870     }
2871
2872     /* if it's the first command, set command semaphore */
2873     if (ha->cmd_cnt == 0)
2874        gdth_set_sema0(ha);
2875
2876     /* evaluate command size, check space */
2877     if (cmdp->OpCode == GDT_IOCTL) {
2878         TRACE2(("IOCTL\n"));
2879         ha->cmd_len = 
2880             GDTOFFSOF(gdth_cmd_str,u.ioctl.p_param) + sizeof(ulong64);
2881     } else if (cmdp->Service == CACHESERVICE) {
2882         TRACE2(("cache command %d\n",cmdp->OpCode));
2883         if (ha->cache_feat & GDT_64BIT)
2884             ha->cmd_len = 
2885                 GDTOFFSOF(gdth_cmd_str,u.cache64.sg_lst) + sizeof(gdth_sg64_str);
2886         else
2887             ha->cmd_len = 
2888                 GDTOFFSOF(gdth_cmd_str,u.cache.sg_lst) + sizeof(gdth_sg_str);
2889     } else if (cmdp->Service == SCSIRAWSERVICE) {
2890         TRACE2(("raw command %d\n",cmdp->OpCode));
2891         if (ha->raw_feat & GDT_64BIT)
2892             ha->cmd_len = 
2893                 GDTOFFSOF(gdth_cmd_str,u.raw64.sg_lst) + sizeof(gdth_sg64_str);
2894         else
2895             ha->cmd_len = 
2896                 GDTOFFSOF(gdth_cmd_str,u.raw.sg_lst) + sizeof(gdth_sg_str);
2897     }
2898
2899     if (ha->cmd_len & 3)
2900         ha->cmd_len += (4 - (ha->cmd_len & 3));
2901
2902     if (ha->cmd_cnt > 0) {
2903         if ((ha->cmd_offs_dpmem + ha->cmd_len + DPMEM_COMMAND_OFFSET) >
2904             ha->ic_all_size) {
2905             TRACE2(("gdth_special_cmd() DPMEM overflow\n"));
2906             ha->cmd_tab[cmd_index-2].cmnd = UNUSED_CMND;
2907             return 0;
2908         }
2909     }
2910
2911     /* copy command */
2912     gdth_copy_command(ha);
2913     return cmd_index;
2914 }    
2915
2916
2917 /* Controller event handling functions */
2918 static gdth_evt_str *gdth_store_event(gdth_ha_str *ha, ushort source, 
2919                                       ushort idx, gdth_evt_data *evt)
2920 {
2921     gdth_evt_str *e;
2922     struct timeval tv;
2923
2924     /* no GDTH_LOCK_HA() ! */
2925     TRACE2(("gdth_store_event() source %d idx %d\n", source, idx));
2926     if (source == 0)                        /* no source -> no event */
2927         return NULL;
2928
2929     if (ebuffer[elastidx].event_source == source &&
2930         ebuffer[elastidx].event_idx == idx &&
2931         ((evt->size != 0 && ebuffer[elastidx].event_data.size != 0 &&
2932             !memcmp((char *)&ebuffer[elastidx].event_data.eu,
2933             (char *)&evt->eu, evt->size)) ||
2934         (evt->size == 0 && ebuffer[elastidx].event_data.size == 0 &&
2935             !strcmp((char *)&ebuffer[elastidx].event_data.event_string,
2936             (char *)&evt->event_string)))) { 
2937         e = &ebuffer[elastidx];
2938         do_gettimeofday(&tv);
2939         e->last_stamp = tv.tv_sec;
2940         ++e->same_count;
2941     } else {
2942         if (ebuffer[elastidx].event_source != 0) {  /* entry not free ? */
2943             ++elastidx;
2944             if (elastidx == MAX_EVENTS)
2945                 elastidx = 0;
2946             if (elastidx == eoldidx) {              /* reached mark ? */
2947                 ++eoldidx;
2948                 if (eoldidx == MAX_EVENTS)
2949                     eoldidx = 0;
2950             }
2951         }
2952         e = &ebuffer[elastidx];
2953         e->event_source = source;
2954         e->event_idx = idx;
2955         do_gettimeofday(&tv);
2956         e->first_stamp = e->last_stamp = tv.tv_sec;
2957         e->same_count = 1;
2958         e->event_data = *evt;
2959         e->application = 0;
2960     }
2961     return e;
2962 }
2963
2964 static int gdth_read_event(gdth_ha_str *ha, int handle, gdth_evt_str *estr)
2965 {
2966     gdth_evt_str *e;
2967     int eindex;
2968     ulong flags;
2969
2970     TRACE2(("gdth_read_event() handle %d\n", handle));
2971     spin_lock_irqsave(&ha->smp_lock, flags);
2972     if (handle == -1)
2973         eindex = eoldidx;
2974     else
2975         eindex = handle;
2976     estr->event_source = 0;
2977
2978     if (eindex >= MAX_EVENTS) {
2979         spin_unlock_irqrestore(&ha->smp_lock, flags);
2980         return eindex;
2981     }
2982     e = &ebuffer[eindex];
2983     if (e->event_source != 0) {
2984         if (eindex != elastidx) {
2985             if (++eindex == MAX_EVENTS)
2986                 eindex = 0;
2987         } else {
2988             eindex = -1;
2989         }
2990         memcpy(estr, e, sizeof(gdth_evt_str));
2991     }
2992     spin_unlock_irqrestore(&ha->smp_lock, flags);
2993     return eindex;
2994 }
2995
2996 static void gdth_readapp_event(gdth_ha_str *ha,
2997                                unchar application, gdth_evt_str *estr)
2998 {
2999     gdth_evt_str *e;
3000     int eindex;
3001     ulong flags;
3002     unchar found = FALSE;
3003
3004     TRACE2(("gdth_readapp_event() app. %d\n", application));
3005     spin_lock_irqsave(&ha->smp_lock, flags);
3006     eindex = eoldidx;
3007     for (;;) {
3008         e = &ebuffer[eindex];
3009         if (e->event_source == 0)
3010             break;
3011         if ((e->application & application) == 0) {
3012             e->application |= application;
3013             found = TRUE;
3014             break;
3015         }
3016         if (eindex == elastidx)
3017             break;
3018         if (++eindex == MAX_EVENTS)
3019             eindex = 0;
3020     }
3021     if (found)
3022         memcpy(estr, e, sizeof(gdth_evt_str));
3023     else
3024         estr->event_source = 0;
3025     spin_unlock_irqrestore(&ha->smp_lock, flags);
3026 }
3027
3028 static void gdth_clear_events(void)
3029 {
3030     TRACE(("gdth_clear_events()"));
3031
3032     eoldidx = elastidx = 0;
3033     ebuffer[0].event_source = 0;
3034 }
3035
3036
3037 /* SCSI interface functions */
3038
3039 static irqreturn_t __gdth_interrupt(gdth_ha_str *ha, int irq,
3040                                     int gdth_from_wait, int* pIndex)
3041 {
3042     gdt6m_dpram_str __iomem *dp6m_ptr = NULL;
3043     gdt6_dpram_str __iomem *dp6_ptr;
3044     gdt2_dpram_str __iomem *dp2_ptr;
3045     Scsi_Cmnd *scp;
3046     int rval, i;
3047     unchar IStatus;
3048     ushort Service;
3049     ulong flags = 0;
3050 #ifdef INT_COAL
3051     int coalesced = FALSE;
3052     int next = FALSE;
3053     gdth_coal_status *pcs = NULL;
3054     int act_int_coal = 0;       
3055 #endif
3056
3057     TRACE(("gdth_interrupt() IRQ %d\n",irq));
3058
3059     /* if polling and not from gdth_wait() -> return */
3060     if (gdth_polling) {
3061         if (!gdth_from_wait) {
3062             return IRQ_HANDLED;
3063         }
3064     }
3065
3066     if (!gdth_polling)
3067         spin_lock_irqsave(&ha->smp_lock, flags);
3068
3069     /* search controller */
3070     if (0 == (IStatus = gdth_get_status(ha, irq))) {
3071         /* spurious interrupt */
3072         if (!gdth_polling)
3073             spin_unlock_irqrestore(&ha->smp_lock, flags);
3074         return IRQ_HANDLED;
3075     }
3076
3077 #ifdef GDTH_STATISTICS
3078     ++act_ints;
3079 #endif
3080
3081 #ifdef INT_COAL
3082     /* See if the fw is returning coalesced status */
3083     if (IStatus == COALINDEX) {
3084         /* Coalesced status.  Setup the initial status 
3085            buffer pointer and flags */
3086         pcs = ha->coal_stat;
3087         coalesced = TRUE;        
3088         next = TRUE;
3089     }
3090
3091     do {
3092         if (coalesced) {
3093             /* For coalesced requests all status
3094                information is found in the status buffer */
3095             IStatus = (unchar)(pcs->status & 0xff);
3096         }
3097 #endif
3098     
3099         if (ha->type == GDT_EISA) {
3100             if (IStatus & 0x80) {                       /* error flag */
3101                 IStatus &= ~0x80;
3102                 ha->status = inw(ha->bmic + MAILBOXREG+8);
3103                 TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3104             } else                                      /* no error */
3105                 ha->status = S_OK;
3106             ha->info = inl(ha->bmic + MAILBOXREG+12);
3107             ha->service = inw(ha->bmic + MAILBOXREG+10);
3108             ha->info2 = inl(ha->bmic + MAILBOXREG+4);
3109
3110             outb(0xff, ha->bmic + EDOORREG);    /* acknowledge interrupt */
3111             outb(0x00, ha->bmic + SEMA1REG);    /* reset status semaphore */
3112         } else if (ha->type == GDT_ISA) {
3113             dp2_ptr = ha->brd;
3114             if (IStatus & 0x80) {                       /* error flag */
3115                 IStatus &= ~0x80;
3116                 ha->status = readw(&dp2_ptr->u.ic.Status);
3117                 TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3118             } else                                      /* no error */
3119                 ha->status = S_OK;
3120             ha->info = readl(&dp2_ptr->u.ic.Info[0]);
3121             ha->service = readw(&dp2_ptr->u.ic.Service);
3122             ha->info2 = readl(&dp2_ptr->u.ic.Info[1]);
3123
3124             writeb(0xff, &dp2_ptr->io.irqdel); /* acknowledge interrupt */
3125             writeb(0, &dp2_ptr->u.ic.Cmd_Index);/* reset command index */
3126             writeb(0, &dp2_ptr->io.Sema1);     /* reset status semaphore */
3127         } else if (ha->type == GDT_PCI) {
3128             dp6_ptr = ha->brd;
3129             if (IStatus & 0x80) {                       /* error flag */
3130                 IStatus &= ~0x80;
3131                 ha->status = readw(&dp6_ptr->u.ic.Status);
3132                 TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3133             } else                                      /* no error */
3134                 ha->status = S_OK;
3135             ha->info = readl(&dp6_ptr->u.ic.Info[0]);
3136             ha->service = readw(&dp6_ptr->u.ic.Service);
3137             ha->info2 = readl(&dp6_ptr->u.ic.Info[1]);
3138
3139             writeb(0xff, &dp6_ptr->io.irqdel); /* acknowledge interrupt */
3140             writeb(0, &dp6_ptr->u.ic.Cmd_Index);/* reset command index */
3141             writeb(0, &dp6_ptr->io.Sema1);     /* reset status semaphore */
3142         } else if (ha->type == GDT_PCINEW) {
3143             if (IStatus & 0x80) {                       /* error flag */
3144                 IStatus &= ~0x80;
3145                 ha->status = inw(PTR2USHORT(&ha->plx->status));
3146                 TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3147             } else
3148                 ha->status = S_OK;
3149             ha->info = inl(PTR2USHORT(&ha->plx->info[0]));
3150             ha->service = inw(PTR2USHORT(&ha->plx->service));
3151             ha->info2 = inl(PTR2USHORT(&ha->plx->info[1]));
3152
3153             outb(0xff, PTR2USHORT(&ha->plx->edoor_reg)); 
3154             outb(0x00, PTR2USHORT(&ha->plx->sema1_reg)); 
3155         } else if (ha->type == GDT_PCIMPR) {
3156             dp6m_ptr = ha->brd;
3157             if (IStatus & 0x80) {                       /* error flag */
3158                 IStatus &= ~0x80;
3159 #ifdef INT_COAL
3160                 if (coalesced)
3161                     ha->status = pcs->ext_status & 0xffff;
3162                 else 
3163 #endif
3164                     ha->status = readw(&dp6m_ptr->i960r.status);
3165                 TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3166             } else                                      /* no error */
3167                 ha->status = S_OK;
3168 #ifdef INT_COAL
3169             /* get information */
3170             if (coalesced) {    
3171                 ha->info = pcs->info0;
3172                 ha->info2 = pcs->info1;
3173                 ha->service = (pcs->ext_status >> 16) & 0xffff;
3174             } else
3175 #endif
3176             {
3177                 ha->info = readl(&dp6m_ptr->i960r.info[0]);
3178                 ha->service = readw(&dp6m_ptr->i960r.service);
3179                 ha->info2 = readl(&dp6m_ptr->i960r.info[1]);
3180             }
3181             /* event string */
3182             if (IStatus == ASYNCINDEX) {
3183                 if (ha->service != SCREENSERVICE &&
3184                     (ha->fw_vers & 0xff) >= 0x1a) {
3185                     ha->dvr.severity = readb
3186                         (&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.severity);
3187                     for (i = 0; i < 256; ++i) {
3188                         ha->dvr.event_string[i] = readb
3189                             (&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.evt_str[i]);
3190                         if (ha->dvr.event_string[i] == 0)
3191                             break;
3192                     }
3193                 }
3194             }
3195 #ifdef INT_COAL
3196             /* Make sure that non coalesced interrupts get cleared
3197                before being handled by gdth_async_event/gdth_sync_event */
3198             if (!coalesced)
3199 #endif                          
3200             {
3201                 writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
3202                 writeb(0, &dp6m_ptr->i960r.sema1_reg);
3203             }
3204         } else {
3205             TRACE2(("gdth_interrupt() unknown controller type\n"));
3206             if (!gdth_polling)
3207                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3208             return IRQ_HANDLED;
3209         }
3210
3211         TRACE(("gdth_interrupt() index %d stat %d info %d\n",
3212                IStatus,ha->status,ha->info));
3213
3214         if (gdth_from_wait) {
3215             *pIndex = (int)IStatus;
3216         }
3217
3218         if (IStatus == ASYNCINDEX) {
3219             TRACE2(("gdth_interrupt() async. event\n"));
3220             gdth_async_event(ha);
3221             if (!gdth_polling)
3222                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3223             gdth_next(ha);
3224             return IRQ_HANDLED;
3225         } 
3226
3227         if (IStatus == SPEZINDEX) {
3228             TRACE2(("Service unknown or not initialized !\n"));
3229             ha->dvr.size = sizeof(ha->dvr.eu.driver);
3230             ha->dvr.eu.driver.ionode = ha->hanum;
3231             gdth_store_event(ha, ES_DRIVER, 4, &ha->dvr);
3232             if (!gdth_polling)
3233                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3234             return IRQ_HANDLED;
3235         }
3236         scp     = ha->cmd_tab[IStatus-2].cmnd;
3237         Service = ha->cmd_tab[IStatus-2].service;
3238         ha->cmd_tab[IStatus-2].cmnd = UNUSED_CMND;
3239         if (scp == UNUSED_CMND) {
3240             TRACE2(("gdth_interrupt() index to unused command (%d)\n",IStatus));
3241             ha->dvr.size = sizeof(ha->dvr.eu.driver);
3242             ha->dvr.eu.driver.ionode = ha->hanum;
3243             ha->dvr.eu.driver.index = IStatus;
3244             gdth_store_event(ha, ES_DRIVER, 1, &ha->dvr);
3245             if (!gdth_polling)
3246                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3247             return IRQ_HANDLED;
3248         }
3249         if (scp == INTERNAL_CMND) {
3250             TRACE(("gdth_interrupt() answer to internal command\n"));
3251             if (!gdth_polling)
3252                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3253             return IRQ_HANDLED;
3254         }
3255
3256         TRACE(("gdth_interrupt() sync. status\n"));
3257         rval = gdth_sync_event(ha,Service,IStatus,scp);
3258         if (!gdth_polling)
3259             spin_unlock_irqrestore(&ha->smp_lock, flags);
3260         if (rval == 2) {
3261             gdth_putq(ha, scp, gdth_cmnd_priv(scp)->priority);
3262         } else if (rval == 1) {
3263             gdth_scsi_done(scp);
3264         }
3265
3266 #ifdef INT_COAL
3267         if (coalesced) {
3268             /* go to the next status in the status buffer */
3269             ++pcs;
3270 #ifdef GDTH_STATISTICS
3271             ++act_int_coal;
3272             if (act_int_coal > max_int_coal) {
3273                 max_int_coal = act_int_coal;
3274                 printk("GDT: max_int_coal = %d\n",(ushort)max_int_coal);
3275             }
3276 #endif      
3277             /* see if there is another status */
3278             if (pcs->status == 0)    
3279                 /* Stop the coalesce loop */
3280                 next = FALSE;
3281         }
3282     } while (next);
3283
3284     /* coalescing only for new GDT_PCIMPR controllers available */      
3285     if (ha->type == GDT_PCIMPR && coalesced) {
3286         writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
3287         writeb(0, &dp6m_ptr->i960r.sema1_reg);
3288     }
3289 #endif
3290
3291     gdth_next(ha);
3292     return IRQ_HANDLED;
3293 }
3294
3295 static irqreturn_t gdth_interrupt(int irq, void *dev_id)
3296 {
3297         gdth_ha_str *ha = (gdth_ha_str *)dev_id;
3298
3299         return __gdth_interrupt(ha, irq, false, NULL);
3300 }
3301
3302 static int gdth_sync_event(gdth_ha_str *ha, int service, unchar index,
3303                                                               Scsi_Cmnd *scp)
3304 {
3305     gdth_msg_str *msg;
3306     gdth_cmd_str *cmdp;
3307     unchar b, t;
3308     struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
3309
3310     cmdp = ha->pccb;
3311     TRACE(("gdth_sync_event() serv %d status %d\n",
3312            service,ha->status));
3313
3314     if (service == SCREENSERVICE) {
3315         msg  = ha->pmsg;
3316         TRACE(("len: %d, answer: %d, ext: %d, alen: %d\n",
3317                msg->msg_len,msg->msg_answer,msg->msg_ext,msg->msg_alen));
3318         if (msg->msg_len > MSGLEN+1)
3319             msg->msg_len = MSGLEN+1;
3320         if (msg->msg_len)
3321             if (!(msg->msg_answer && msg->msg_ext)) {
3322                 msg->msg_text[msg->msg_len] = '\0';
3323                 printk("%s",msg->msg_text);
3324             }
3325
3326         if (msg->msg_ext && !msg->msg_answer) {
3327             while (gdth_test_busy(ha))
3328                 gdth_delay(0);
3329             cmdp->Service       = SCREENSERVICE;
3330             cmdp->RequestBuffer = SCREEN_CMND;
3331             gdth_get_cmd_index(ha);
3332             gdth_set_sema0(ha);
3333             cmdp->OpCode        = GDT_READ;
3334             cmdp->BoardNode     = LOCALBOARD;
3335             cmdp->u.screen.reserved  = 0;
3336             cmdp->u.screen.su.msg.msg_handle= msg->msg_handle;
3337             cmdp->u.screen.su.msg.msg_addr  = ha->msg_phys;
3338             ha->cmd_offs_dpmem = 0;
3339             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.screen.su.msg.msg_addr) 
3340                 + sizeof(ulong64);
3341             ha->cmd_cnt = 0;
3342             gdth_copy_command(ha);
3343             gdth_release_event(ha);
3344             return 0;
3345         }
3346
3347         if (msg->msg_answer && msg->msg_alen) {
3348             /* default answers (getchar() not possible) */
3349             if (msg->msg_alen == 1) {
3350                 msg->msg_alen = 0;
3351                 msg->msg_len = 1;
3352