[SCSI] fcoe: fix fcoe module ref counting
[linux-2.6.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:           unused
89  * buffer:                  unused
90  * dma_handle:              unused
91  * buffers_residual:        unused
92  * Status:                  unused
93  * Message:                 unused
94  * have_data_in:            unused
95  * sent_command:            unused
96  * phase:                   unused
97  */
98
99
100 /* interrupt coalescing */
101 /* #define INT_COAL */
102
103 /* statistics */
104 #define GDTH_STATISTICS
105
106 #include <linux/module.h>
107
108 #include <linux/version.h>
109 #include <linux/kernel.h>
110 #include <linux/types.h>
111 #include <linux/pci.h>
112 #include <linux/string.h>
113 #include <linux/ctype.h>
114 #include <linux/ioport.h>
115 #include <linux/delay.h>
116 #include <linux/interrupt.h>
117 #include <linux/in.h>
118 #include <linux/proc_fs.h>
119 #include <linux/time.h>
120 #include <linux/timer.h>
121 #include <linux/dma-mapping.h>
122 #include <linux/list.h>
123 #include <linux/smp_lock.h>
124 #include <linux/slab.h>
125
126 #ifdef GDTH_RTC
127 #include <linux/mc146818rtc.h>
128 #endif
129 #include <linux/reboot.h>
130
131 #include <asm/dma.h>
132 #include <asm/system.h>
133 #include <asm/io.h>
134 #include <asm/uaccess.h>
135 #include <linux/spinlock.h>
136 #include <linux/blkdev.h>
137 #include <linux/scatterlist.h>
138
139 #include "scsi.h"
140 #include <scsi/scsi_host.h>
141 #include "gdth.h"
142
143 static void gdth_delay(int milliseconds);
144 static void gdth_eval_mapping(u32 size, u32 *cyls, int *heads, int *secs);
145 static irqreturn_t gdth_interrupt(int irq, void *dev_id);
146 static irqreturn_t __gdth_interrupt(gdth_ha_str *ha,
147                                     int gdth_from_wait, int* pIndex);
148 static int gdth_sync_event(gdth_ha_str *ha, int service, u8 index,
149                                                                Scsi_Cmnd *scp);
150 static int gdth_async_event(gdth_ha_str *ha);
151 static void gdth_log_event(gdth_evt_data *dvr, char *buffer);
152
153 static void gdth_putq(gdth_ha_str *ha, Scsi_Cmnd *scp, u8 priority);
154 static void gdth_next(gdth_ha_str *ha);
155 static int gdth_fill_raw_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, u8 b);
156 static int gdth_special_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp);
157 static gdth_evt_str *gdth_store_event(gdth_ha_str *ha, u16 source,
158                                       u16 idx, gdth_evt_data *evt);
159 static int gdth_read_event(gdth_ha_str *ha, int handle, gdth_evt_str *estr);
160 static void gdth_readapp_event(gdth_ha_str *ha, u8 application, 
161                                gdth_evt_str *estr);
162 static void gdth_clear_events(void);
163
164 static void gdth_copy_internal_data(gdth_ha_str *ha, Scsi_Cmnd *scp,
165                                     char *buffer, u16 count);
166 static int gdth_internal_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp);
167 static int gdth_fill_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, u16 hdrive);
168
169 static void gdth_enable_int(gdth_ha_str *ha);
170 static int gdth_test_busy(gdth_ha_str *ha);
171 static int gdth_get_cmd_index(gdth_ha_str *ha);
172 static void gdth_release_event(gdth_ha_str *ha);
173 static int gdth_wait(gdth_ha_str *ha, int index,u32 time);
174 static int gdth_internal_cmd(gdth_ha_str *ha, u8 service, u16 opcode,
175                                              u32 p1, u64 p2,u64 p3);
176 static int gdth_search_drives(gdth_ha_str *ha);
177 static int gdth_analyse_hdrive(gdth_ha_str *ha, u16 hdrive);
178
179 static const char *gdth_ctr_name(gdth_ha_str *ha);
180
181 static int gdth_open(struct inode *inode, struct file *filep);
182 static int gdth_close(struct inode *inode, struct file *filep);
183 static int gdth_ioctl(struct inode *inode, struct file *filep,
184                       unsigned int cmd, unsigned long arg);
185
186 static void gdth_flush(gdth_ha_str *ha);
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 u8   DebugState = DEBUG_GDTH;
194
195 #ifdef __SERIAL__
196 #define MAX_SERBUF 160
197 static void ser_init(void);
198 static void ser_puts(char *str);
199 static void ser_putc(char c);
200 static int  ser_printk(const char *fmt, ...);
201 static char strbuf[MAX_SERBUF+1];
202 #ifdef __COM2__
203 #define COM_BASE 0x2f8
204 #else
205 #define COM_BASE 0x3f8
206 #endif
207 static void ser_init()
208 {
209     unsigned port=COM_BASE;
210
211     outb(0x80,port+3);
212     outb(0,port+1);
213     /* 19200 Baud, if 9600: outb(12,port) */
214     outb(6, port);
215     outb(3,port+3);
216     outb(0,port+1);
217     /*
218     ser_putc('I');
219     ser_putc(' ');
220     */
221 }
222
223 static void ser_puts(char *str)
224 {
225     char *ptr;
226
227     ser_init();
228     for (ptr=str;*ptr;++ptr)
229         ser_putc(*ptr);
230 }
231
232 static void ser_putc(char c)
233 {
234     unsigned port=COM_BASE;
235
236     while ((inb(port+5) & 0x20)==0);
237     outb(c,port);
238     if (c==0x0a)
239     {
240         while ((inb(port+5) & 0x20)==0);
241         outb(0x0d,port);
242     }
243 }
244
245 static int ser_printk(const char *fmt, ...)
246 {
247     va_list args;
248     int i;
249
250     va_start(args,fmt);
251     i = vsprintf(strbuf,fmt,args);
252     ser_puts(strbuf);
253     va_end(args);
254     return i;
255 }
256
257 #define TRACE(a)    {if (DebugState==1) {ser_printk a;}}
258 #define TRACE2(a)   {if (DebugState==1 || DebugState==2) {ser_printk a;}}
259 #define TRACE3(a)   {if (DebugState!=0) {ser_printk a;}}
260
261 #else /* !__SERIAL__ */
262 #define TRACE(a)    {if (DebugState==1) {printk a;}}
263 #define TRACE2(a)   {if (DebugState==1 || DebugState==2) {printk a;}}
264 #define TRACE3(a)   {if (DebugState!=0) {printk a;}}
265 #endif
266
267 #else /* !DEBUG */
268 #define TRACE(a)
269 #define TRACE2(a)
270 #define TRACE3(a)
271 #endif
272
273 #ifdef GDTH_STATISTICS
274 static u32 max_rq=0, max_index=0, max_sg=0;
275 #ifdef INT_COAL
276 static u32 max_int_coal=0;
277 #endif
278 static u32 act_ints=0, act_ios=0, act_stats=0, act_rq=0;
279 static struct timer_list gdth_timer;
280 #endif
281
282 #define PTR2USHORT(a)   (u16)(unsigned long)(a)
283 #define GDTOFFSOF(a,b)  (size_t)&(((a*)0)->b)
284 #define INDEX_OK(i,t)   ((i)<ARRAY_SIZE(t))
285
286 #define BUS_L2P(a,b)    ((b)>(a)->virt_bus ? (b-1):(b))
287
288 #ifdef CONFIG_ISA
289 static u8   gdth_drq_tab[4] = {5,6,7,7};            /* DRQ table */
290 #endif
291 #if defined(CONFIG_EISA) || defined(CONFIG_ISA)
292 static u8   gdth_irq_tab[6] = {0,10,11,12,14,0};    /* IRQ table */
293 #endif
294 static u8   gdth_polling;                           /* polling if TRUE */
295 static int      gdth_ctr_count  = 0;                    /* controller count */
296 static LIST_HEAD(gdth_instances);                       /* controller list */
297 static u8   gdth_write_through = FALSE;             /* write through */
298 static gdth_evt_str ebuffer[MAX_EVENTS];                /* event buffer */
299 static int elastidx;
300 static int eoldidx;
301 static int major;
302
303 #define DIN     1                               /* IN data direction */
304 #define DOU     2                               /* OUT data direction */
305 #define DNO     DIN                             /* no data transfer */
306 #define DUN     DIN                             /* unknown data direction */
307 static u8 gdth_direction_tab[0x100] = {
308     DNO,DNO,DIN,DIN,DOU,DIN,DIN,DOU,DIN,DUN,DOU,DOU,DUN,DUN,DUN,DIN,
309     DNO,DIN,DIN,DOU,DIN,DOU,DNO,DNO,DOU,DNO,DIN,DNO,DIN,DOU,DNO,DUN,
310     DIN,DUN,DIN,DUN,DOU,DIN,DUN,DUN,DIN,DIN,DOU,DNO,DUN,DIN,DOU,DOU,
311     DOU,DOU,DOU,DNO,DIN,DNO,DNO,DIN,DOU,DOU,DOU,DOU,DIN,DOU,DIN,DOU,
312     DOU,DOU,DIN,DIN,DIN,DNO,DUN,DNO,DNO,DNO,DUN,DNO,DOU,DIN,DUN,DUN,
313     DUN,DUN,DUN,DUN,DUN,DOU,DUN,DUN,DUN,DUN,DIN,DUN,DUN,DUN,DUN,DUN,
314     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
315     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
316     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DIN,DUN,DOU,DUN,DUN,DUN,DUN,DUN,
317     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DIN,DUN,
318     DUN,DUN,DUN,DUN,DUN,DNO,DNO,DUN,DIN,DNO,DOU,DUN,DNO,DUN,DOU,DOU,
319     DOU,DOU,DOU,DNO,DUN,DIN,DOU,DIN,DIN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
320     DUN,DUN,DOU,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
321     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
322     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DOU,DUN,DUN,DUN,DUN,DUN,
323     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN
324 };
325
326 /* LILO and modprobe/insmod parameters */
327 /* IRQ list for GDT3000/3020 EISA controllers */
328 static int irq[MAXHA] __initdata = 
329 {0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
330  0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};
331 /* disable driver flag */
332 static int disable __initdata = 0;
333 /* reserve flag */
334 static int reserve_mode = 1;                  
335 /* reserve list */
336 static int reserve_list[MAX_RES_ARGS] = 
337 {0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
338  0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
339  0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};
340 /* scan order for PCI controllers */
341 static int reverse_scan = 0;
342 /* virtual channel for the host drives */
343 static int hdr_channel = 0;
344 /* max. IDs per channel */
345 static int max_ids = MAXID;
346 /* rescan all IDs */
347 static int rescan = 0;
348 /* shared access */
349 static int shared_access = 1;
350 /* enable support for EISA and ISA controllers */
351 static int probe_eisa_isa = 0;
352 /* 64 bit DMA mode, support for drives > 2 TB, if force_dma32 = 0 */
353 static int force_dma32 = 0;
354
355 /* parameters for modprobe/insmod */
356 module_param_array(irq, int, NULL, 0);
357 module_param(disable, int, 0);
358 module_param(reserve_mode, int, 0);
359 module_param_array(reserve_list, int, NULL, 0);
360 module_param(reverse_scan, int, 0);
361 module_param(hdr_channel, int, 0);
362 module_param(max_ids, int, 0);
363 module_param(rescan, int, 0);
364 module_param(shared_access, int, 0);
365 module_param(probe_eisa_isa, int, 0);
366 module_param(force_dma32, int, 0);
367 MODULE_AUTHOR("Achim Leubner");
368 MODULE_LICENSE("GPL");
369
370 /* ioctl interface */
371 static const struct file_operations gdth_fops = {
372     .ioctl   = gdth_ioctl,
373     .open    = gdth_open,
374     .release = gdth_close,
375 };
376
377 #include "gdth_proc.h"
378 #include "gdth_proc.c"
379
380 static gdth_ha_str *gdth_find_ha(int hanum)
381 {
382         gdth_ha_str *ha;
383
384         list_for_each_entry(ha, &gdth_instances, list)
385                 if (hanum == ha->hanum)
386                         return ha;
387
388         return NULL;
389 }
390
391 static struct gdth_cmndinfo *gdth_get_cmndinfo(gdth_ha_str *ha)
392 {
393         struct gdth_cmndinfo *priv = NULL;
394         unsigned long flags;
395         int i;
396
397         spin_lock_irqsave(&ha->smp_lock, flags);
398
399         for (i=0; i<GDTH_MAXCMDS; ++i) {
400                 if (ha->cmndinfo[i].index == 0) {
401                         priv = &ha->cmndinfo[i];
402                         memset(priv, 0, sizeof(*priv));
403                         priv->index = i+1;
404                         break;
405                 }
406         }
407
408         spin_unlock_irqrestore(&ha->smp_lock, flags);
409
410         return priv;
411 }
412
413 static void gdth_put_cmndinfo(struct gdth_cmndinfo *priv)
414 {
415         BUG_ON(!priv);
416         priv->index = 0;
417 }
418
419 static void gdth_delay(int milliseconds)
420 {
421     if (milliseconds == 0) {
422         udelay(1);
423     } else {
424         mdelay(milliseconds);
425     }
426 }
427
428 static void gdth_scsi_done(struct scsi_cmnd *scp)
429 {
430         struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
431         int internal_command = cmndinfo->internal_command;
432
433         TRACE2(("gdth_scsi_done()\n"));
434
435         gdth_put_cmndinfo(cmndinfo);
436         scp->host_scribble = NULL;
437
438         if (internal_command)
439                 complete((struct completion *)scp->request);
440         else
441                 scp->scsi_done(scp);
442 }
443
444 int __gdth_execute(struct scsi_device *sdev, gdth_cmd_str *gdtcmd, char *cmnd,
445                    int timeout, u32 *info)
446 {
447     gdth_ha_str *ha = shost_priv(sdev->host);
448     Scsi_Cmnd *scp;
449     struct gdth_cmndinfo cmndinfo;
450     DECLARE_COMPLETION_ONSTACK(wait);
451     int rval;
452
453     scp = kzalloc(sizeof(*scp), GFP_KERNEL);
454     if (!scp)
455         return -ENOMEM;
456
457     scp->sense_buffer = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
458     if (!scp->sense_buffer) {
459         kfree(scp);
460         return -ENOMEM;
461     }
462
463     scp->device = sdev;
464     memset(&cmndinfo, 0, sizeof(cmndinfo));
465
466     /* use request field to save the ptr. to completion struct. */
467     scp->request = (struct request *)&wait;
468     scp->cmd_len = 12;
469     scp->cmnd = cmnd;
470     cmndinfo.priority = IOCTL_PRI;
471     cmndinfo.internal_cmd_str = gdtcmd;
472     cmndinfo.internal_command = 1;
473
474     TRACE(("__gdth_execute() cmd 0x%x\n", scp->cmnd[0]));
475     __gdth_queuecommand(ha, scp, &cmndinfo);
476
477     wait_for_completion(&wait);
478
479     rval = cmndinfo.status;
480     if (info)
481         *info = cmndinfo.info;
482     kfree(scp->sense_buffer);
483     kfree(scp);
484     return rval;
485 }
486
487 int gdth_execute(struct Scsi_Host *shost, gdth_cmd_str *gdtcmd, char *cmnd,
488                  int timeout, u32 *info)
489 {
490     struct scsi_device *sdev = scsi_get_host_dev(shost);
491     int rval = __gdth_execute(sdev, gdtcmd, cmnd, timeout, info);
492
493     scsi_free_host_dev(sdev);
494     return rval;
495 }
496
497 static void gdth_eval_mapping(u32 size, u32 *cyls, int *heads, int *secs)
498 {
499     *cyls = size /HEADS/SECS;
500     if (*cyls <= MAXCYLS) {
501         *heads = HEADS;
502         *secs = SECS;
503     } else {                                        /* too high for 64*32 */
504         *cyls = size /MEDHEADS/MEDSECS;
505         if (*cyls <= MAXCYLS) {
506             *heads = MEDHEADS;
507             *secs = MEDSECS;
508         } else {                                    /* too high for 127*63 */
509             *cyls = size /BIGHEADS/BIGSECS;
510             *heads = BIGHEADS;
511             *secs = BIGSECS;
512         }
513     }
514 }
515
516 /* controller search and initialization functions */
517 #ifdef CONFIG_EISA
518 static int __init gdth_search_eisa(u16 eisa_adr)
519 {
520     u32 id;
521     
522     TRACE(("gdth_search_eisa() adr. %x\n",eisa_adr));
523     id = inl(eisa_adr+ID0REG);
524     if (id == GDT3A_ID || id == GDT3B_ID) {     /* GDT3000A or GDT3000B */
525         if ((inb(eisa_adr+EISAREG) & 8) == 0)   
526             return 0;                           /* not EISA configured */
527         return 1;
528     }
529     if (id == GDT3_ID)                          /* GDT3000 */
530         return 1;
531
532     return 0;                                   
533 }
534 #endif /* CONFIG_EISA */
535
536 #ifdef CONFIG_ISA
537 static int __init gdth_search_isa(u32 bios_adr)
538 {
539     void __iomem *addr;
540     u32 id;
541
542     TRACE(("gdth_search_isa() bios adr. %x\n",bios_adr));
543     if ((addr = ioremap(bios_adr+BIOS_ID_OFFS, sizeof(u32))) != NULL) {
544         id = readl(addr);
545         iounmap(addr);
546         if (id == GDT2_ID)                          /* GDT2000 */
547             return 1;
548     }
549     return 0;
550 }
551 #endif /* CONFIG_ISA */
552
553 #ifdef CONFIG_PCI
554
555 static bool gdth_search_vortex(u16 device)
556 {
557         if (device <= PCI_DEVICE_ID_VORTEX_GDT6555)
558                 return true;
559         if (device >= PCI_DEVICE_ID_VORTEX_GDT6x17RP &&
560             device <= PCI_DEVICE_ID_VORTEX_GDTMAXRP)
561                 return true;
562         if (device == PCI_DEVICE_ID_VORTEX_GDTNEWRX ||
563             device == PCI_DEVICE_ID_VORTEX_GDTNEWRX2)
564                 return true;
565         return false;
566 }
567
568 static int gdth_pci_probe_one(gdth_pci_str *pcistr, gdth_ha_str **ha_out);
569 static int gdth_pci_init_one(struct pci_dev *pdev,
570                              const struct pci_device_id *ent);
571 static void gdth_pci_remove_one(struct pci_dev *pdev);
572 static void gdth_remove_one(gdth_ha_str *ha);
573
574 /* Vortex only makes RAID controllers.
575  * We do not really want to specify all 550 ids here, so wildcard match.
576  */
577 static const struct pci_device_id gdthtable[] = {
578         { PCI_VDEVICE(VORTEX, PCI_ANY_ID) },
579         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_SRC) },
580         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_SRC_XSCALE) },
581         { }     /* terminate list */
582 };
583 MODULE_DEVICE_TABLE(pci, gdthtable);
584
585 static struct pci_driver gdth_pci_driver = {
586         .name           = "gdth",
587         .id_table       = gdthtable,
588         .probe          = gdth_pci_init_one,
589         .remove         = gdth_pci_remove_one,
590 };
591
592 static void __devexit gdth_pci_remove_one(struct pci_dev *pdev)
593 {
594         gdth_ha_str *ha = pci_get_drvdata(pdev);
595
596         pci_set_drvdata(pdev, NULL);
597
598         list_del(&ha->list);
599         gdth_remove_one(ha);
600
601         pci_disable_device(pdev);
602 }
603
604 static int __devinit gdth_pci_init_one(struct pci_dev *pdev,
605                                        const struct pci_device_id *ent)
606 {
607         u16 vendor = pdev->vendor;
608         u16 device = pdev->device;
609         unsigned long base0, base1, base2;
610         int rc;
611         gdth_pci_str gdth_pcistr;
612         gdth_ha_str *ha = NULL;
613     
614         TRACE(("gdth_search_dev() cnt %d vendor %x device %x\n",
615                gdth_ctr_count, vendor, device));
616
617         memset(&gdth_pcistr, 0, sizeof(gdth_pcistr));
618
619         if (vendor == PCI_VENDOR_ID_VORTEX && !gdth_search_vortex(device))
620                 return -ENODEV;
621
622         rc = pci_enable_device(pdev);
623         if (rc)
624                 return rc;
625
626         if (gdth_ctr_count >= MAXHA)
627                 return -EBUSY;
628
629         /* GDT PCI controller found, resources are already in pdev */
630         gdth_pcistr.pdev = pdev;
631         base0 = pci_resource_flags(pdev, 0);
632         base1 = pci_resource_flags(pdev, 1);
633         base2 = pci_resource_flags(pdev, 2);
634         if (device <= PCI_DEVICE_ID_VORTEX_GDT6000B ||   /* GDT6000/B */
635             device >= PCI_DEVICE_ID_VORTEX_GDT6x17RP) {  /* MPR */
636             if (!(base0 & IORESOURCE_MEM)) 
637                 return -ENODEV;
638             gdth_pcistr.dpmem = pci_resource_start(pdev, 0);
639         } else {                                  /* GDT6110, GDT6120, .. */
640             if (!(base0 & IORESOURCE_MEM) ||
641                 !(base2 & IORESOURCE_MEM) ||
642                 !(base1 & IORESOURCE_IO)) 
643                 return -ENODEV;
644             gdth_pcistr.dpmem = pci_resource_start(pdev, 2);
645             gdth_pcistr.io    = pci_resource_start(pdev, 1);
646         }
647         TRACE2(("Controller found at %d/%d, irq %d, dpmem 0x%lx\n",
648                 gdth_pcistr.pdev->bus->number,
649                 PCI_SLOT(gdth_pcistr.pdev->devfn),
650                 gdth_pcistr.irq,
651                 gdth_pcistr.dpmem));
652
653         rc = gdth_pci_probe_one(&gdth_pcistr, &ha);
654         if (rc)
655                 return rc;
656
657         return 0;
658 }
659 #endif /* CONFIG_PCI */
660
661 #ifdef CONFIG_EISA
662 static int __init gdth_init_eisa(u16 eisa_adr,gdth_ha_str *ha)
663 {
664     u32 retries,id;
665     u8 prot_ver,eisacf,i,irq_found;
666
667     TRACE(("gdth_init_eisa() adr. %x\n",eisa_adr));
668     
669     /* disable board interrupts, deinitialize services */
670     outb(0xff,eisa_adr+EDOORREG);
671     outb(0x00,eisa_adr+EDENABREG);
672     outb(0x00,eisa_adr+EINTENABREG);
673     
674     outb(0xff,eisa_adr+LDOORREG);
675     retries = INIT_RETRIES;
676     gdth_delay(20);
677     while (inb(eisa_adr+EDOORREG) != 0xff) {
678         if (--retries == 0) {
679             printk("GDT-EISA: Initialization error (DEINIT failed)\n");
680             return 0;
681         }
682         gdth_delay(1);
683         TRACE2(("wait for DEINIT: retries=%d\n",retries));
684     }
685     prot_ver = inb(eisa_adr+MAILBOXREG);
686     outb(0xff,eisa_adr+EDOORREG);
687     if (prot_ver != PROTOCOL_VERSION) {
688         printk("GDT-EISA: Illegal protocol version\n");
689         return 0;
690     }
691     ha->bmic = eisa_adr;
692     ha->brd_phys = (u32)eisa_adr >> 12;
693
694     outl(0,eisa_adr+MAILBOXREG);
695     outl(0,eisa_adr+MAILBOXREG+4);
696     outl(0,eisa_adr+MAILBOXREG+8);
697     outl(0,eisa_adr+MAILBOXREG+12);
698
699     /* detect IRQ */ 
700     if ((id = inl(eisa_adr+ID0REG)) == GDT3_ID) {
701         ha->oem_id = OEM_ID_ICP;
702         ha->type = GDT_EISA;
703         ha->stype = id;
704         outl(1,eisa_adr+MAILBOXREG+8);
705         outb(0xfe,eisa_adr+LDOORREG);
706         retries = INIT_RETRIES;
707         gdth_delay(20);
708         while (inb(eisa_adr+EDOORREG) != 0xfe) {
709             if (--retries == 0) {
710                 printk("GDT-EISA: Initialization error (get IRQ failed)\n");
711                 return 0;
712             }
713             gdth_delay(1);
714         }
715         ha->irq = inb(eisa_adr+MAILBOXREG);
716         outb(0xff,eisa_adr+EDOORREG);
717         TRACE2(("GDT3000/3020: IRQ=%d\n",ha->irq));
718         /* check the result */
719         if (ha->irq == 0) {
720                 TRACE2(("Unknown IRQ, use IRQ table from cmd line !\n"));
721                 for (i = 0, irq_found = FALSE; 
722                      i < MAXHA && irq[i] != 0xff; ++i) {
723                 if (irq[i]==10 || irq[i]==11 || irq[i]==12 || irq[i]==14) {
724                     irq_found = TRUE;
725                     break;
726                 }
727                 }
728             if (irq_found) {
729                 ha->irq = irq[i];
730                 irq[i] = 0;
731                 printk("GDT-EISA: Can not detect controller IRQ,\n");
732                 printk("Use IRQ setting from command line (IRQ = %d)\n",
733                        ha->irq);
734             } else {
735                 printk("GDT-EISA: Initialization error (unknown IRQ), Enable\n");
736                 printk("the controller BIOS or use command line parameters\n");
737                 return 0;
738             }
739         }
740     } else {
741         eisacf = inb(eisa_adr+EISAREG) & 7;
742         if (eisacf > 4)                         /* level triggered */
743             eisacf -= 4;
744         ha->irq = gdth_irq_tab[eisacf];
745         ha->oem_id = OEM_ID_ICP;
746         ha->type = GDT_EISA;
747         ha->stype = id;
748     }
749
750     ha->dma64_support = 0;
751     return 1;
752 }
753 #endif /* CONFIG_EISA */
754
755 #ifdef CONFIG_ISA
756 static int __init gdth_init_isa(u32 bios_adr,gdth_ha_str *ha)
757 {
758     register gdt2_dpram_str __iomem *dp2_ptr;
759     int i;
760     u8 irq_drq,prot_ver;
761     u32 retries;
762
763     TRACE(("gdth_init_isa() bios adr. %x\n",bios_adr));
764
765     ha->brd = ioremap(bios_adr, sizeof(gdt2_dpram_str));
766     if (ha->brd == NULL) {
767         printk("GDT-ISA: Initialization error (DPMEM remap error)\n");
768         return 0;
769     }
770     dp2_ptr = ha->brd;
771     writeb(1, &dp2_ptr->io.memlock); /* switch off write protection */
772     /* reset interface area */
773     memset_io(&dp2_ptr->u, 0, sizeof(dp2_ptr->u));
774     if (readl(&dp2_ptr->u) != 0) {
775         printk("GDT-ISA: Initialization error (DPMEM write error)\n");
776         iounmap(ha->brd);
777         return 0;
778     }
779
780     /* disable board interrupts, read DRQ and IRQ */
781     writeb(0xff, &dp2_ptr->io.irqdel);
782     writeb(0x00, &dp2_ptr->io.irqen);
783     writeb(0x00, &dp2_ptr->u.ic.S_Status);
784     writeb(0x00, &dp2_ptr->u.ic.Cmd_Index);
785
786     irq_drq = readb(&dp2_ptr->io.rq);
787     for (i=0; i<3; ++i) {
788         if ((irq_drq & 1)==0)
789             break;
790         irq_drq >>= 1;
791     }
792     ha->drq = gdth_drq_tab[i];
793
794     irq_drq = readb(&dp2_ptr->io.rq) >> 3;
795     for (i=1; i<5; ++i) {
796         if ((irq_drq & 1)==0)
797             break;
798         irq_drq >>= 1;
799     }
800     ha->irq = gdth_irq_tab[i];
801
802     /* deinitialize services */
803     writel(bios_adr, &dp2_ptr->u.ic.S_Info[0]);
804     writeb(0xff, &dp2_ptr->u.ic.S_Cmd_Indx);
805     writeb(0, &dp2_ptr->io.event);
806     retries = INIT_RETRIES;
807     gdth_delay(20);
808     while (readb(&dp2_ptr->u.ic.S_Status) != 0xff) {
809         if (--retries == 0) {
810             printk("GDT-ISA: Initialization error (DEINIT failed)\n");
811             iounmap(ha->brd);
812             return 0;
813         }
814         gdth_delay(1);
815     }
816     prot_ver = (u8)readl(&dp2_ptr->u.ic.S_Info[0]);
817     writeb(0, &dp2_ptr->u.ic.Status);
818     writeb(0xff, &dp2_ptr->io.irqdel);
819     if (prot_ver != PROTOCOL_VERSION) {
820         printk("GDT-ISA: Illegal protocol version\n");
821         iounmap(ha->brd);
822         return 0;
823     }
824
825     ha->oem_id = OEM_ID_ICP;
826     ha->type = GDT_ISA;
827     ha->ic_all_size = sizeof(dp2_ptr->u);
828     ha->stype= GDT2_ID;
829     ha->brd_phys = bios_adr >> 4;
830
831     /* special request to controller BIOS */
832     writel(0x00, &dp2_ptr->u.ic.S_Info[0]);
833     writel(0x00, &dp2_ptr->u.ic.S_Info[1]);
834     writel(0x01, &dp2_ptr->u.ic.S_Info[2]);
835     writel(0x00, &dp2_ptr->u.ic.S_Info[3]);
836     writeb(0xfe, &dp2_ptr->u.ic.S_Cmd_Indx);
837     writeb(0, &dp2_ptr->io.event);
838     retries = INIT_RETRIES;
839     gdth_delay(20);
840     while (readb(&dp2_ptr->u.ic.S_Status) != 0xfe) {
841         if (--retries == 0) {
842             printk("GDT-ISA: Initialization error\n");
843             iounmap(ha->brd);
844             return 0;
845         }
846         gdth_delay(1);
847     }
848     writeb(0, &dp2_ptr->u.ic.Status);
849     writeb(0xff, &dp2_ptr->io.irqdel);
850
851     ha->dma64_support = 0;
852     return 1;
853 }
854 #endif /* CONFIG_ISA */
855
856 #ifdef CONFIG_PCI
857 static int __devinit gdth_init_pci(struct pci_dev *pdev, gdth_pci_str *pcistr,
858                                    gdth_ha_str *ha)
859 {
860     register gdt6_dpram_str __iomem *dp6_ptr;
861     register gdt6c_dpram_str __iomem *dp6c_ptr;
862     register gdt6m_dpram_str __iomem *dp6m_ptr;
863     u32 retries;
864     u8 prot_ver;
865     u16 command;
866     int i, found = FALSE;
867
868     TRACE(("gdth_init_pci()\n"));
869
870     if (pdev->vendor == PCI_VENDOR_ID_INTEL)
871         ha->oem_id = OEM_ID_INTEL;
872     else
873         ha->oem_id = OEM_ID_ICP;
874     ha->brd_phys = (pdev->bus->number << 8) | (pdev->devfn & 0xf8);
875     ha->stype = (u32)pdev->device;
876     ha->irq = pdev->irq;
877     ha->pdev = pdev;
878     
879     if (ha->pdev->device <= PCI_DEVICE_ID_VORTEX_GDT6000B) {  /* GDT6000/B */
880         TRACE2(("init_pci() dpmem %lx irq %d\n",pcistr->dpmem,ha->irq));
881         ha->brd = ioremap(pcistr->dpmem, sizeof(gdt6_dpram_str));
882         if (ha->brd == NULL) {
883             printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
884             return 0;
885         }
886         /* check and reset interface area */
887         dp6_ptr = ha->brd;
888         writel(DPMEM_MAGIC, &dp6_ptr->u);
889         if (readl(&dp6_ptr->u) != DPMEM_MAGIC) {
890             printk("GDT-PCI: Cannot access DPMEM at 0x%lx (shadowed?)\n", 
891                    pcistr->dpmem);
892             found = FALSE;
893             for (i = 0xC8000; i < 0xE8000; i += 0x4000) {
894                 iounmap(ha->brd);
895                 ha->brd = ioremap(i, sizeof(u16)); 
896                 if (ha->brd == NULL) {
897                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
898                     return 0;
899                 }
900                 if (readw(ha->brd) != 0xffff) {
901                     TRACE2(("init_pci_old() address 0x%x busy\n", i));
902                     continue;
903                 }
904                 iounmap(ha->brd);
905                 pci_write_config_dword(pdev, PCI_BASE_ADDRESS_0, i);
906                 ha->brd = ioremap(i, sizeof(gdt6_dpram_str)); 
907                 if (ha->brd == NULL) {
908                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
909                     return 0;
910                 }
911                 dp6_ptr = ha->brd;
912                 writel(DPMEM_MAGIC, &dp6_ptr->u);
913                 if (readl(&dp6_ptr->u) == DPMEM_MAGIC) {
914                     printk("GDT-PCI: Use free address at 0x%x\n", i);
915                     found = TRUE;
916                     break;
917                 }
918             }   
919             if (!found) {
920                 printk("GDT-PCI: No free address found!\n");
921                 iounmap(ha->brd);
922                 return 0;
923             }
924         }
925         memset_io(&dp6_ptr->u, 0, sizeof(dp6_ptr->u));
926         if (readl(&dp6_ptr->u) != 0) {
927             printk("GDT-PCI: Initialization error (DPMEM write error)\n");
928             iounmap(ha->brd);
929             return 0;
930         }
931         
932         /* disable board interrupts, deinit services */
933         writeb(0xff, &dp6_ptr->io.irqdel);
934         writeb(0x00, &dp6_ptr->io.irqen);
935         writeb(0x00, &dp6_ptr->u.ic.S_Status);
936         writeb(0x00, &dp6_ptr->u.ic.Cmd_Index);
937
938         writel(pcistr->dpmem, &dp6_ptr->u.ic.S_Info[0]);
939         writeb(0xff, &dp6_ptr->u.ic.S_Cmd_Indx);
940         writeb(0, &dp6_ptr->io.event);
941         retries = INIT_RETRIES;
942         gdth_delay(20);
943         while (readb(&dp6_ptr->u.ic.S_Status) != 0xff) {
944             if (--retries == 0) {
945                 printk("GDT-PCI: Initialization error (DEINIT failed)\n");
946                 iounmap(ha->brd);
947                 return 0;
948             }
949             gdth_delay(1);
950         }
951         prot_ver = (u8)readl(&dp6_ptr->u.ic.S_Info[0]);
952         writeb(0, &dp6_ptr->u.ic.S_Status);
953         writeb(0xff, &dp6_ptr->io.irqdel);
954         if (prot_ver != PROTOCOL_VERSION) {
955             printk("GDT-PCI: Illegal protocol version\n");
956             iounmap(ha->brd);
957             return 0;
958         }
959
960         ha->type = GDT_PCI;
961         ha->ic_all_size = sizeof(dp6_ptr->u);
962         
963         /* special command to controller BIOS */
964         writel(0x00, &dp6_ptr->u.ic.S_Info[0]);
965         writel(0x00, &dp6_ptr->u.ic.S_Info[1]);
966         writel(0x00, &dp6_ptr->u.ic.S_Info[2]);
967         writel(0x00, &dp6_ptr->u.ic.S_Info[3]);
968         writeb(0xfe, &dp6_ptr->u.ic.S_Cmd_Indx);
969         writeb(0, &dp6_ptr->io.event);
970         retries = INIT_RETRIES;
971         gdth_delay(20);
972         while (readb(&dp6_ptr->u.ic.S_Status) != 0xfe) {
973             if (--retries == 0) {
974                 printk("GDT-PCI: Initialization error\n");
975                 iounmap(ha->brd);
976                 return 0;
977             }
978             gdth_delay(1);
979         }
980         writeb(0, &dp6_ptr->u.ic.S_Status);
981         writeb(0xff, &dp6_ptr->io.irqdel);
982
983         ha->dma64_support = 0;
984
985     } else if (ha->pdev->device <= PCI_DEVICE_ID_VORTEX_GDT6555) { /* GDT6110, ... */
986         ha->plx = (gdt6c_plx_regs *)pcistr->io;
987         TRACE2(("init_pci_new() dpmem %lx irq %d\n",
988             pcistr->dpmem,ha->irq));
989         ha->brd = ioremap(pcistr->dpmem, sizeof(gdt6c_dpram_str));
990         if (ha->brd == NULL) {
991             printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
992             iounmap(ha->brd);
993             return 0;
994         }
995         /* check and reset interface area */
996         dp6c_ptr = ha->brd;
997         writel(DPMEM_MAGIC, &dp6c_ptr->u);
998         if (readl(&dp6c_ptr->u) != DPMEM_MAGIC) {
999             printk("GDT-PCI: Cannot access DPMEM at 0x%lx (shadowed?)\n", 
1000                    pcistr->dpmem);
1001             found = FALSE;
1002             for (i = 0xC8000; i < 0xE8000; i += 0x4000) {
1003                 iounmap(ha->brd);
1004                 ha->brd = ioremap(i, sizeof(u16)); 
1005                 if (ha->brd == NULL) {
1006                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1007                     return 0;
1008                 }
1009                 if (readw(ha->brd) != 0xffff) {
1010                     TRACE2(("init_pci_plx() address 0x%x busy\n", i));
1011                     continue;
1012                 }
1013                 iounmap(ha->brd);
1014                 pci_write_config_dword(pdev, PCI_BASE_ADDRESS_2, i);
1015                 ha->brd = ioremap(i, sizeof(gdt6c_dpram_str)); 
1016                 if (ha->brd == NULL) {
1017                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1018                     return 0;
1019                 }
1020                 dp6c_ptr = ha->brd;
1021                 writel(DPMEM_MAGIC, &dp6c_ptr->u);
1022                 if (readl(&dp6c_ptr->u) == DPMEM_MAGIC) {
1023                     printk("GDT-PCI: Use free address at 0x%x\n", i);
1024                     found = TRUE;
1025                     break;
1026                 }
1027             }   
1028             if (!found) {
1029                 printk("GDT-PCI: No free address found!\n");
1030                 iounmap(ha->brd);
1031                 return 0;
1032             }
1033         }
1034         memset_io(&dp6c_ptr->u, 0, sizeof(dp6c_ptr->u));
1035         if (readl(&dp6c_ptr->u) != 0) {
1036             printk("GDT-PCI: Initialization error (DPMEM write error)\n");
1037             iounmap(ha->brd);
1038             return 0;
1039         }
1040         
1041         /* disable board interrupts, deinit services */
1042         outb(0x00,PTR2USHORT(&ha->plx->control1));
1043         outb(0xff,PTR2USHORT(&ha->plx->edoor_reg));
1044         
1045         writeb(0x00, &dp6c_ptr->u.ic.S_Status);
1046         writeb(0x00, &dp6c_ptr->u.ic.Cmd_Index);
1047
1048         writel(pcistr->dpmem, &dp6c_ptr->u.ic.S_Info[0]);
1049         writeb(0xff, &dp6c_ptr->u.ic.S_Cmd_Indx);
1050
1051         outb(1,PTR2USHORT(&ha->plx->ldoor_reg));
1052
1053         retries = INIT_RETRIES;
1054         gdth_delay(20);
1055         while (readb(&dp6c_ptr->u.ic.S_Status) != 0xff) {
1056             if (--retries == 0) {
1057                 printk("GDT-PCI: Initialization error (DEINIT failed)\n");
1058                 iounmap(ha->brd);
1059                 return 0;
1060             }
1061             gdth_delay(1);
1062         }
1063         prot_ver = (u8)readl(&dp6c_ptr->u.ic.S_Info[0]);
1064         writeb(0, &dp6c_ptr->u.ic.Status);
1065         if (prot_ver != PROTOCOL_VERSION) {
1066             printk("GDT-PCI: Illegal protocol version\n");
1067             iounmap(ha->brd);
1068             return 0;
1069         }
1070
1071         ha->type = GDT_PCINEW;
1072         ha->ic_all_size = sizeof(dp6c_ptr->u);
1073
1074         /* special command to controller BIOS */
1075         writel(0x00, &dp6c_ptr->u.ic.S_Info[0]);
1076         writel(0x00, &dp6c_ptr->u.ic.S_Info[1]);
1077         writel(0x00, &dp6c_ptr->u.ic.S_Info[2]);
1078         writel(0x00, &dp6c_ptr->u.ic.S_Info[3]);
1079         writeb(0xfe, &dp6c_ptr->u.ic.S_Cmd_Indx);
1080         
1081         outb(1,PTR2USHORT(&ha->plx->ldoor_reg));
1082
1083         retries = INIT_RETRIES;
1084         gdth_delay(20);
1085         while (readb(&dp6c_ptr->u.ic.S_Status) != 0xfe) {
1086             if (--retries == 0) {
1087                 printk("GDT-PCI: Initialization error\n");
1088                 iounmap(ha->brd);
1089                 return 0;
1090             }
1091             gdth_delay(1);
1092         }
1093         writeb(0, &dp6c_ptr->u.ic.S_Status);
1094
1095         ha->dma64_support = 0;
1096
1097     } else {                                            /* MPR */
1098         TRACE2(("init_pci_mpr() dpmem %lx irq %d\n",pcistr->dpmem,ha->irq));
1099         ha->brd = ioremap(pcistr->dpmem, sizeof(gdt6m_dpram_str));
1100         if (ha->brd == NULL) {
1101             printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1102             return 0;
1103         }
1104
1105         /* manipulate config. space to enable DPMEM, start RP controller */
1106         pci_read_config_word(pdev, PCI_COMMAND, &command);
1107         command |= 6;
1108         pci_write_config_word(pdev, PCI_COMMAND, command);
1109         if (pci_resource_start(pdev, 8) == 1UL)
1110             pci_resource_start(pdev, 8) = 0UL;
1111         i = 0xFEFF0001UL;
1112         pci_write_config_dword(pdev, PCI_ROM_ADDRESS, i);
1113         gdth_delay(1);
1114         pci_write_config_dword(pdev, PCI_ROM_ADDRESS,
1115                                pci_resource_start(pdev, 8));
1116         
1117         dp6m_ptr = ha->brd;
1118
1119         /* Ensure that it is safe to access the non HW portions of DPMEM.
1120          * Aditional check needed for Xscale based RAID controllers */
1121         while( ((int)readb(&dp6m_ptr->i960r.sema0_reg) ) & 3 )
1122             gdth_delay(1);
1123         
1124         /* check and reset interface area */
1125         writel(DPMEM_MAGIC, &dp6m_ptr->u);
1126         if (readl(&dp6m_ptr->u) != DPMEM_MAGIC) {
1127             printk("GDT-PCI: Cannot access DPMEM at 0x%lx (shadowed?)\n", 
1128                    pcistr->dpmem);
1129             found = FALSE;
1130             for (i = 0xC8000; i < 0xE8000; i += 0x4000) {
1131                 iounmap(ha->brd);
1132                 ha->brd = ioremap(i, sizeof(u16)); 
1133                 if (ha->brd == NULL) {
1134                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1135                     return 0;
1136                 }
1137                 if (readw(ha->brd) != 0xffff) {
1138                     TRACE2(("init_pci_mpr() address 0x%x busy\n", i));
1139                     continue;
1140                 }
1141                 iounmap(ha->brd);
1142                 pci_write_config_dword(pdev, PCI_BASE_ADDRESS_0, i);
1143                 ha->brd = ioremap(i, sizeof(gdt6m_dpram_str)); 
1144                 if (ha->brd == NULL) {
1145                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1146                     return 0;
1147                 }
1148                 dp6m_ptr = ha->brd;
1149                 writel(DPMEM_MAGIC, &dp6m_ptr->u);
1150                 if (readl(&dp6m_ptr->u) == DPMEM_MAGIC) {
1151                     printk("GDT-PCI: Use free address at 0x%x\n", i);
1152                     found = TRUE;
1153                     break;
1154                 }
1155             }   
1156             if (!found) {
1157                 printk("GDT-PCI: No free address found!\n");
1158                 iounmap(ha->brd);
1159                 return 0;
1160             }
1161         }
1162         memset_io(&dp6m_ptr->u, 0, sizeof(dp6m_ptr->u));
1163         
1164         /* disable board interrupts, deinit services */
1165         writeb(readb(&dp6m_ptr->i960r.edoor_en_reg) | 4,
1166                     &dp6m_ptr->i960r.edoor_en_reg);
1167         writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
1168         writeb(0x00, &dp6m_ptr->u.ic.S_Status);
1169         writeb(0x00, &dp6m_ptr->u.ic.Cmd_Index);
1170
1171         writel(pcistr->dpmem, &dp6m_ptr->u.ic.S_Info[0]);
1172         writeb(0xff, &dp6m_ptr->u.ic.S_Cmd_Indx);
1173         writeb(1, &dp6m_ptr->i960r.ldoor_reg);
1174         retries = INIT_RETRIES;
1175         gdth_delay(20);
1176         while (readb(&dp6m_ptr->u.ic.S_Status) != 0xff) {
1177             if (--retries == 0) {
1178                 printk("GDT-PCI: Initialization error (DEINIT failed)\n");
1179                 iounmap(ha->brd);
1180                 return 0;
1181             }
1182             gdth_delay(1);
1183         }
1184         prot_ver = (u8)readl(&dp6m_ptr->u.ic.S_Info[0]);
1185         writeb(0, &dp6m_ptr->u.ic.S_Status);
1186         if (prot_ver != PROTOCOL_VERSION) {
1187             printk("GDT-PCI: Illegal protocol version\n");
1188             iounmap(ha->brd);
1189             return 0;
1190         }
1191
1192         ha->type = GDT_PCIMPR;
1193         ha->ic_all_size = sizeof(dp6m_ptr->u);
1194         
1195         /* special command to controller BIOS */
1196         writel(0x00, &dp6m_ptr->u.ic.S_Info[0]);
1197         writel(0x00, &dp6m_ptr->u.ic.S_Info[1]);
1198         writel(0x00, &dp6m_ptr->u.ic.S_Info[2]);
1199         writel(0x00, &dp6m_ptr->u.ic.S_Info[3]);
1200         writeb(0xfe, &dp6m_ptr->u.ic.S_Cmd_Indx);
1201         writeb(1, &dp6m_ptr->i960r.ldoor_reg);
1202         retries = INIT_RETRIES;
1203         gdth_delay(20);
1204         while (readb(&dp6m_ptr->u.ic.S_Status) != 0xfe) {
1205             if (--retries == 0) {
1206                 printk("GDT-PCI: Initialization error\n");
1207                 iounmap(ha->brd);
1208                 return 0;
1209             }
1210             gdth_delay(1);
1211         }
1212         writeb(0, &dp6m_ptr->u.ic.S_Status);
1213
1214         /* read FW version to detect 64-bit DMA support */
1215         writeb(0xfd, &dp6m_ptr->u.ic.S_Cmd_Indx);
1216         writeb(1, &dp6m_ptr->i960r.ldoor_reg);
1217         retries = INIT_RETRIES;
1218         gdth_delay(20);
1219         while (readb(&dp6m_ptr->u.ic.S_Status) != 0xfd) {
1220             if (--retries == 0) {
1221                 printk("GDT-PCI: Initialization error (DEINIT failed)\n");
1222                 iounmap(ha->brd);
1223                 return 0;
1224             }
1225             gdth_delay(1);
1226         }
1227         prot_ver = (u8)(readl(&dp6m_ptr->u.ic.S_Info[0]) >> 16);
1228         writeb(0, &dp6m_ptr->u.ic.S_Status);
1229         if (prot_ver < 0x2b)      /* FW < x.43: no 64-bit DMA support */
1230             ha->dma64_support = 0;
1231         else 
1232             ha->dma64_support = 1;
1233     }
1234
1235     return 1;
1236 }
1237 #endif /* CONFIG_PCI */
1238
1239 /* controller protocol functions */
1240
1241 static void __devinit gdth_enable_int(gdth_ha_str *ha)
1242 {
1243     unsigned long flags;
1244     gdt2_dpram_str __iomem *dp2_ptr;
1245     gdt6_dpram_str __iomem *dp6_ptr;
1246     gdt6m_dpram_str __iomem *dp6m_ptr;
1247
1248     TRACE(("gdth_enable_int() hanum %d\n",ha->hanum));
1249     spin_lock_irqsave(&ha->smp_lock, flags);
1250
1251     if (ha->type == GDT_EISA) {
1252         outb(0xff, ha->bmic + EDOORREG);
1253         outb(0xff, ha->bmic + EDENABREG);
1254         outb(0x01, ha->bmic + EINTENABREG);
1255     } else if (ha->type == GDT_ISA) {
1256         dp2_ptr = ha->brd;
1257         writeb(1, &dp2_ptr->io.irqdel);
1258         writeb(0, &dp2_ptr->u.ic.Cmd_Index);
1259         writeb(1, &dp2_ptr->io.irqen);
1260     } else if (ha->type == GDT_PCI) {
1261         dp6_ptr = ha->brd;
1262         writeb(1, &dp6_ptr->io.irqdel);
1263         writeb(0, &dp6_ptr->u.ic.Cmd_Index);
1264         writeb(1, &dp6_ptr->io.irqen);
1265     } else if (ha->type == GDT_PCINEW) {
1266         outb(0xff, PTR2USHORT(&ha->plx->edoor_reg));
1267         outb(0x03, PTR2USHORT(&ha->plx->control1));
1268     } else if (ha->type == GDT_PCIMPR) {
1269         dp6m_ptr = ha->brd;
1270         writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
1271         writeb(readb(&dp6m_ptr->i960r.edoor_en_reg) & ~4,
1272                     &dp6m_ptr->i960r.edoor_en_reg);
1273     }
1274     spin_unlock_irqrestore(&ha->smp_lock, flags);
1275 }
1276
1277 /* return IStatus if interrupt was from this card else 0 */
1278 static u8 gdth_get_status(gdth_ha_str *ha)
1279 {
1280     u8 IStatus = 0;
1281
1282     TRACE(("gdth_get_status() irq %d ctr_count %d\n", ha->irq, gdth_ctr_count));
1283
1284         if (ha->type == GDT_EISA)
1285             IStatus = inb((u16)ha->bmic + EDOORREG);
1286         else if (ha->type == GDT_ISA)
1287             IStatus =
1288                 readb(&((gdt2_dpram_str __iomem *)ha->brd)->u.ic.Cmd_Index);
1289         else if (ha->type == GDT_PCI)
1290             IStatus =
1291                 readb(&((gdt6_dpram_str __iomem *)ha->brd)->u.ic.Cmd_Index);
1292         else if (ha->type == GDT_PCINEW) 
1293             IStatus = inb(PTR2USHORT(&ha->plx->edoor_reg));
1294         else if (ha->type == GDT_PCIMPR)
1295             IStatus =
1296                 readb(&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.edoor_reg);
1297
1298         return IStatus;
1299 }
1300
1301 static int gdth_test_busy(gdth_ha_str *ha)
1302 {
1303     register int gdtsema0 = 0;
1304
1305     TRACE(("gdth_test_busy() hanum %d\n", ha->hanum));
1306
1307     if (ha->type == GDT_EISA)
1308         gdtsema0 = (int)inb(ha->bmic + SEMA0REG);
1309     else if (ha->type == GDT_ISA)
1310         gdtsema0 = (int)readb(&((gdt2_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
1311     else if (ha->type == GDT_PCI)
1312         gdtsema0 = (int)readb(&((gdt6_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
1313     else if (ha->type == GDT_PCINEW) 
1314         gdtsema0 = (int)inb(PTR2USHORT(&ha->plx->sema0_reg));
1315     else if (ha->type == GDT_PCIMPR)
1316         gdtsema0 = 
1317             (int)readb(&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.sema0_reg);
1318
1319     return (gdtsema0 & 1);
1320 }
1321
1322
1323 static int gdth_get_cmd_index(gdth_ha_str *ha)
1324 {
1325     int i;
1326
1327     TRACE(("gdth_get_cmd_index() hanum %d\n", ha->hanum));
1328
1329     for (i=0; i<GDTH_MAXCMDS; ++i) {
1330         if (ha->cmd_tab[i].cmnd == UNUSED_CMND) {
1331             ha->cmd_tab[i].cmnd = ha->pccb->RequestBuffer;
1332             ha->cmd_tab[i].service = ha->pccb->Service;
1333             ha->pccb->CommandIndex = (u32)i+2;
1334             return (i+2);
1335         }
1336     }
1337     return 0;
1338 }
1339
1340
1341 static void gdth_set_sema0(gdth_ha_str *ha)
1342 {
1343     TRACE(("gdth_set_sema0() hanum %d\n", ha->hanum));
1344
1345     if (ha->type == GDT_EISA) {
1346         outb(1, ha->bmic + SEMA0REG);
1347     } else if (ha->type == GDT_ISA) {
1348         writeb(1, &((gdt2_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
1349     } else if (ha->type == GDT_PCI) {
1350         writeb(1, &((gdt6_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
1351     } else if (ha->type == GDT_PCINEW) { 
1352         outb(1, PTR2USHORT(&ha->plx->sema0_reg));
1353     } else if (ha->type == GDT_PCIMPR) {
1354         writeb(1, &((gdt6m_dpram_str __iomem *)ha->brd)->i960r.sema0_reg);
1355     }
1356 }
1357
1358
1359 static void gdth_copy_command(gdth_ha_str *ha)
1360 {
1361     register gdth_cmd_str *cmd_ptr;
1362     register gdt6m_dpram_str __iomem *dp6m_ptr;
1363     register gdt6c_dpram_str __iomem *dp6c_ptr;
1364     gdt6_dpram_str __iomem *dp6_ptr;
1365     gdt2_dpram_str __iomem *dp2_ptr;
1366     u16 cp_count,dp_offset,cmd_no;
1367     
1368     TRACE(("gdth_copy_command() hanum %d\n", ha->hanum));
1369
1370     cp_count = ha->cmd_len;
1371     dp_offset= ha->cmd_offs_dpmem;
1372     cmd_no   = ha->cmd_cnt;
1373     cmd_ptr  = ha->pccb;
1374
1375     ++ha->cmd_cnt;                                                      
1376     if (ha->type == GDT_EISA)
1377         return;                                 /* no DPMEM, no copy */
1378
1379     /* set cpcount dword aligned */
1380     if (cp_count & 3)
1381         cp_count += (4 - (cp_count & 3));
1382
1383     ha->cmd_offs_dpmem += cp_count;
1384     
1385     /* set offset and service, copy command to DPMEM */
1386     if (ha->type == GDT_ISA) {
1387         dp2_ptr = ha->brd;
1388         writew(dp_offset + DPMEM_COMMAND_OFFSET,
1389                     &dp2_ptr->u.ic.comm_queue[cmd_no].offset);
1390         writew((u16)cmd_ptr->Service,
1391                     &dp2_ptr->u.ic.comm_queue[cmd_no].serv_id);
1392         memcpy_toio(&dp2_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
1393     } else if (ha->type == GDT_PCI) {
1394         dp6_ptr = ha->brd;
1395         writew(dp_offset + DPMEM_COMMAND_OFFSET,
1396                     &dp6_ptr->u.ic.comm_queue[cmd_no].offset);
1397         writew((u16)cmd_ptr->Service,
1398                     &dp6_ptr->u.ic.comm_queue[cmd_no].serv_id);
1399         memcpy_toio(&dp6_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
1400     } else if (ha->type == GDT_PCINEW) {
1401         dp6c_ptr = ha->brd;
1402         writew(dp_offset + DPMEM_COMMAND_OFFSET,
1403                     &dp6c_ptr->u.ic.comm_queue[cmd_no].offset);
1404         writew((u16)cmd_ptr->Service,
1405                     &dp6c_ptr->u.ic.comm_queue[cmd_no].serv_id);
1406         memcpy_toio(&dp6c_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
1407     } else if (ha->type == GDT_PCIMPR) {
1408         dp6m_ptr = ha->brd;
1409         writew(dp_offset + DPMEM_COMMAND_OFFSET,
1410                     &dp6m_ptr->u.ic.comm_queue[cmd_no].offset);
1411         writew((u16)cmd_ptr->Service,
1412                     &dp6m_ptr->u.ic.comm_queue[cmd_no].serv_id);
1413         memcpy_toio(&dp6m_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
1414     }
1415 }
1416
1417
1418 static void gdth_release_event(gdth_ha_str *ha)
1419 {
1420     TRACE(("gdth_release_event() hanum %d\n", ha->hanum));
1421
1422 #ifdef GDTH_STATISTICS
1423     {
1424         u32 i,j;
1425         for (i=0,j=0; j<GDTH_MAXCMDS; ++j) {
1426             if (ha->cmd_tab[j].cmnd != UNUSED_CMND)
1427                 ++i;
1428         }
1429         if (max_index < i) {
1430             max_index = i;
1431             TRACE3(("GDT: max_index = %d\n",(u16)i));
1432         }
1433     }
1434 #endif
1435
1436     if (ha->pccb->OpCode == GDT_INIT)
1437         ha->pccb->Service |= 0x80;
1438
1439     if (ha->type == GDT_EISA) {
1440         if (ha->pccb->OpCode == GDT_INIT)               /* store DMA buffer */
1441             outl(ha->ccb_phys, ha->bmic + MAILBOXREG);
1442         outb(ha->pccb->Service, ha->bmic + LDOORREG);
1443     } else if (ha->type == GDT_ISA) {
1444         writeb(0, &((gdt2_dpram_str __iomem *)ha->brd)->io.event);
1445     } else if (ha->type == GDT_PCI) {
1446         writeb(0, &((gdt6_dpram_str __iomem *)ha->brd)->io.event);
1447     } else if (ha->type == GDT_PCINEW) { 
1448         outb(1, PTR2USHORT(&ha->plx->ldoor_reg));
1449     } else if (ha->type == GDT_PCIMPR) {
1450         writeb(1, &((gdt6m_dpram_str __iomem *)ha->brd)->i960r.ldoor_reg);
1451     }
1452 }
1453
1454 static int gdth_wait(gdth_ha_str *ha, int index, u32 time)
1455 {
1456     int answer_found = FALSE;
1457     int wait_index = 0;
1458
1459     TRACE(("gdth_wait() hanum %d index %d time %d\n", ha->hanum, index, time));
1460
1461     if (index == 0)
1462         return 1;                               /* no wait required */
1463
1464     do {
1465         __gdth_interrupt(ha, true, &wait_index);
1466         if (wait_index == index) {
1467             answer_found = TRUE;
1468             break;
1469         }
1470         gdth_delay(1);
1471     } while (--time);
1472
1473     while (gdth_test_busy(ha))
1474         gdth_delay(0);
1475
1476     return (answer_found);
1477 }
1478
1479
1480 static int gdth_internal_cmd(gdth_ha_str *ha, u8 service, u16 opcode,
1481                                             u32 p1, u64 p2, u64 p3)
1482 {
1483     register gdth_cmd_str *cmd_ptr;
1484     int retries,index;
1485
1486     TRACE2(("gdth_internal_cmd() service %d opcode %d\n",service,opcode));
1487
1488     cmd_ptr = ha->pccb;
1489     memset((char*)cmd_ptr,0,sizeof(gdth_cmd_str));
1490
1491     /* make command  */
1492     for (retries = INIT_RETRIES;;) {
1493         cmd_ptr->Service          = service;
1494         cmd_ptr->RequestBuffer    = INTERNAL_CMND;
1495         if (!(index=gdth_get_cmd_index(ha))) {
1496             TRACE(("GDT: No free command index found\n"));
1497             return 0;
1498         }
1499         gdth_set_sema0(ha);
1500         cmd_ptr->OpCode           = opcode;
1501         cmd_ptr->BoardNode        = LOCALBOARD;
1502         if (service == CACHESERVICE) {
1503             if (opcode == GDT_IOCTL) {
1504                 cmd_ptr->u.ioctl.subfunc = p1;
1505                 cmd_ptr->u.ioctl.channel = (u32)p2;
1506                 cmd_ptr->u.ioctl.param_size = (u16)p3;
1507                 cmd_ptr->u.ioctl.p_param = ha->scratch_phys;
1508             } else {
1509                 if (ha->cache_feat & GDT_64BIT) {
1510                     cmd_ptr->u.cache64.DeviceNo = (u16)p1;
1511                     cmd_ptr->u.cache64.BlockNo  = p2;
1512                 } else {
1513                     cmd_ptr->u.cache.DeviceNo = (u16)p1;
1514                     cmd_ptr->u.cache.BlockNo  = (u32)p2;
1515                 }
1516             }
1517         } else if (service == SCSIRAWSERVICE) {
1518             if (ha->raw_feat & GDT_64BIT) {
1519                 cmd_ptr->u.raw64.direction  = p1;
1520                 cmd_ptr->u.raw64.bus        = (u8)p2;
1521                 cmd_ptr->u.raw64.target     = (u8)p3;
1522                 cmd_ptr->u.raw64.lun        = (u8)(p3 >> 8);
1523             } else {
1524                 cmd_ptr->u.raw.direction  = p1;
1525                 cmd_ptr->u.raw.bus        = (u8)p2;
1526                 cmd_ptr->u.raw.target     = (u8)p3;
1527                 cmd_ptr->u.raw.lun        = (u8)(p3 >> 8);
1528             }
1529         } else if (service == SCREENSERVICE) {
1530             if (opcode == GDT_REALTIME) {
1531                 *(u32 *)&cmd_ptr->u.screen.su.data[0] = p1;
1532                 *(u32 *)&cmd_ptr->u.screen.su.data[4] = (u32)p2;
1533                 *(u32 *)&cmd_ptr->u.screen.su.data[8] = (u32)p3;
1534             }
1535         }
1536         ha->cmd_len          = sizeof(gdth_cmd_str);
1537         ha->cmd_offs_dpmem   = 0;
1538         ha->cmd_cnt          = 0;
1539         gdth_copy_command(ha);
1540         gdth_release_event(ha);
1541         gdth_delay(20);
1542         if (!gdth_wait(ha, index, INIT_TIMEOUT)) {
1543             printk("GDT: Initialization error (timeout service %d)\n",service);
1544             return 0;
1545         }
1546         if (ha->status != S_BSY || --retries == 0)
1547             break;
1548         gdth_delay(1);   
1549     }   
1550     
1551     return (ha->status != S_OK ? 0:1);
1552 }
1553     
1554
1555 /* search for devices */
1556
1557 static int __devinit gdth_search_drives(gdth_ha_str *ha)
1558 {
1559     u16 cdev_cnt, i;
1560     int ok;
1561     u32 bus_no, drv_cnt, drv_no, j;
1562     gdth_getch_str *chn;
1563     gdth_drlist_str *drl;
1564     gdth_iochan_str *ioc;
1565     gdth_raw_iochan_str *iocr;
1566     gdth_arcdl_str *alst;
1567     gdth_alist_str *alst2;
1568     gdth_oem_str_ioctl *oemstr;
1569 #ifdef INT_COAL
1570     gdth_perf_modes *pmod;
1571 #endif
1572
1573 #ifdef GDTH_RTC
1574     u8 rtc[12];
1575     unsigned long flags;
1576 #endif     
1577    
1578     TRACE(("gdth_search_drives() hanum %d\n", ha->hanum));
1579     ok = 0;
1580
1581     /* initialize controller services, at first: screen service */
1582     ha->screen_feat = 0;
1583     if (!force_dma32) {
1584         ok = gdth_internal_cmd(ha, SCREENSERVICE, GDT_X_INIT_SCR, 0, 0, 0);
1585         if (ok)
1586             ha->screen_feat = GDT_64BIT;
1587     }
1588     if (force_dma32 || (!ok && ha->status == (u16)S_NOFUNC))
1589         ok = gdth_internal_cmd(ha, SCREENSERVICE, GDT_INIT, 0, 0, 0);
1590     if (!ok) {
1591         printk("GDT-HA %d: Initialization error screen service (code %d)\n",
1592                ha->hanum, ha->status);
1593         return 0;
1594     }
1595     TRACE2(("gdth_search_drives(): SCREENSERVICE initialized\n"));
1596
1597 #ifdef GDTH_RTC
1598     /* read realtime clock info, send to controller */
1599     /* 1. wait for the falling edge of update flag */
1600     spin_lock_irqsave(&rtc_lock, flags);
1601     for (j = 0; j < 1000000; ++j)
1602         if (CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP)
1603             break;
1604     for (j = 0; j < 1000000; ++j)
1605         if (!(CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP))
1606             break;
1607     /* 2. read info */
1608     do {
1609         for (j = 0; j < 12; ++j) 
1610             rtc[j] = CMOS_READ(j);
1611     } while (rtc[0] != CMOS_READ(0));
1612     spin_unlock_irqrestore(&rtc_lock, flags);
1613     TRACE2(("gdth_search_drives(): RTC: %x/%x/%x\n",*(u32 *)&rtc[0],
1614             *(u32 *)&rtc[4], *(u32 *)&rtc[8]));
1615     /* 3. send to controller firmware */
1616     gdth_internal_cmd(ha, SCREENSERVICE, GDT_REALTIME, *(u32 *)&rtc[0],
1617                       *(u32 *)&rtc[4], *(u32 *)&rtc[8]);
1618 #endif  
1619  
1620     /* unfreeze all IOs */
1621     gdth_internal_cmd(ha, CACHESERVICE, GDT_UNFREEZE_IO, 0, 0, 0);
1622  
1623     /* initialize cache service */
1624     ha->cache_feat = 0;
1625     if (!force_dma32) {
1626         ok = gdth_internal_cmd(ha, CACHESERVICE, GDT_X_INIT_HOST, LINUX_OS,
1627                                                                          0, 0);
1628         if (ok)
1629             ha->cache_feat = GDT_64BIT;
1630     }
1631     if (force_dma32 || (!ok && ha->status == (u16)S_NOFUNC))
1632         ok = gdth_internal_cmd(ha, CACHESERVICE, GDT_INIT, LINUX_OS, 0, 0);
1633     if (!ok) {
1634         printk("GDT-HA %d: Initialization error cache service (code %d)\n",
1635                ha->hanum, ha->status);
1636         return 0;
1637     }
1638     TRACE2(("gdth_search_drives(): CACHESERVICE initialized\n"));
1639     cdev_cnt = (u16)ha->info;
1640     ha->fw_vers = ha->service;
1641
1642 #ifdef INT_COAL
1643     if (ha->type == GDT_PCIMPR) {
1644         /* set perf. modes */
1645         pmod = (gdth_perf_modes *)ha->pscratch;
1646         pmod->version          = 1;
1647         pmod->st_mode          = 1;    /* enable one status buffer */
1648         *((u64 *)&pmod->st_buff_addr1) = ha->coal_stat_phys;
1649         pmod->st_buff_indx1    = COALINDEX;
1650         pmod->st_buff_addr2    = 0;
1651         pmod->st_buff_u_addr2  = 0;
1652         pmod->st_buff_indx2    = 0;
1653         pmod->st_buff_size     = sizeof(gdth_coal_status) * MAXOFFSETS;
1654         pmod->cmd_mode         = 0;    // disable all cmd buffers
1655         pmod->cmd_buff_addr1   = 0;
1656         pmod->cmd_buff_u_addr1 = 0;
1657         pmod->cmd_buff_indx1   = 0;
1658         pmod->cmd_buff_addr2   = 0;
1659         pmod->cmd_buff_u_addr2 = 0;
1660         pmod->cmd_buff_indx2   = 0;
1661         pmod->cmd_buff_size    = 0;
1662         pmod->reserved1        = 0;            
1663         pmod->reserved2        = 0;            
1664         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, SET_PERF_MODES,
1665                               INVALID_CHANNEL,sizeof(gdth_perf_modes))) {
1666             printk("GDT-HA %d: Interrupt coalescing activated\n", ha->hanum);
1667         }
1668     }
1669 #endif
1670
1671     /* detect number of buses - try new IOCTL */
1672     iocr = (gdth_raw_iochan_str *)ha->pscratch;
1673     iocr->hdr.version        = 0xffffffff;
1674     iocr->hdr.list_entries   = MAXBUS;
1675     iocr->hdr.first_chan     = 0;
1676     iocr->hdr.last_chan      = MAXBUS-1;
1677     iocr->hdr.list_offset    = GDTOFFSOF(gdth_raw_iochan_str, list[0]);
1678     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, IOCHAN_RAW_DESC,
1679                           INVALID_CHANNEL,sizeof(gdth_raw_iochan_str))) {
1680         TRACE2(("IOCHAN_RAW_DESC supported!\n"));
1681         ha->bus_cnt = iocr->hdr.chan_count;
1682         for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
1683             if (iocr->list[bus_no].proc_id < MAXID)
1684                 ha->bus_id[bus_no] = iocr->list[bus_no].proc_id;
1685             else
1686                 ha->bus_id[bus_no] = 0xff;
1687         }
1688     } else {
1689         /* old method */
1690         chn = (gdth_getch_str *)ha->pscratch;
1691         for (bus_no = 0; bus_no < MAXBUS; ++bus_no) {
1692             chn->channel_no = bus_no;
1693             if (!gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1694                                    SCSI_CHAN_CNT | L_CTRL_PATTERN,
1695                                    IO_CHANNEL | INVALID_CHANNEL,
1696                                    sizeof(gdth_getch_str))) {
1697                 if (bus_no == 0) {
1698                     printk("GDT-HA %d: Error detecting channel count (0x%x)\n",
1699                            ha->hanum, ha->status);
1700                     return 0;
1701                 }
1702                 break;
1703             }
1704             if (chn->siop_id < MAXID)
1705                 ha->bus_id[bus_no] = chn->siop_id;
1706             else
1707                 ha->bus_id[bus_no] = 0xff;
1708         }       
1709         ha->bus_cnt = (u8)bus_no;
1710     }
1711     TRACE2(("gdth_search_drives() %d channels\n",ha->bus_cnt));
1712
1713     /* read cache configuration */
1714     if (!gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, CACHE_INFO,
1715                            INVALID_CHANNEL,sizeof(gdth_cinfo_str))) {
1716         printk("GDT-HA %d: Initialization error cache service (code %d)\n",
1717                ha->hanum, ha->status);
1718         return 0;
1719     }
1720     ha->cpar = ((gdth_cinfo_str *)ha->pscratch)->cpar;
1721     TRACE2(("gdth_search_drives() cinfo: vs %x sta %d str %d dw %d b %d\n",
1722             ha->cpar.version,ha->cpar.state,ha->cpar.strategy,
1723             ha->cpar.write_back,ha->cpar.block_size));
1724
1725     /* read board info and features */
1726     ha->more_proc = FALSE;
1727     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, BOARD_INFO,
1728                           INVALID_CHANNEL,sizeof(gdth_binfo_str))) {
1729         memcpy(&ha->binfo, (gdth_binfo_str *)ha->pscratch,
1730                sizeof(gdth_binfo_str));
1731         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, BOARD_FEATURES,
1732                               INVALID_CHANNEL,sizeof(gdth_bfeat_str))) {
1733             TRACE2(("BOARD_INFO/BOARD_FEATURES supported\n"));
1734             ha->bfeat = *(gdth_bfeat_str *)ha->pscratch;
1735             ha->more_proc = TRUE;
1736         }
1737     } else {
1738         TRACE2(("BOARD_INFO requires firmware >= 1.10/2.08\n"));
1739         strcpy(ha->binfo.type_string, gdth_ctr_name(ha));
1740     }
1741     TRACE2(("Controller name: %s\n",ha->binfo.type_string));
1742
1743     /* read more informations */
1744     if (ha->more_proc) {
1745         /* physical drives, channel addresses */
1746         ioc = (gdth_iochan_str *)ha->pscratch;
1747         ioc->hdr.version        = 0xffffffff;
1748         ioc->hdr.list_entries   = MAXBUS;
1749         ioc->hdr.first_chan     = 0;
1750         ioc->hdr.last_chan      = MAXBUS-1;
1751         ioc->hdr.list_offset    = GDTOFFSOF(gdth_iochan_str, list[0]);
1752         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, IOCHAN_DESC,
1753                               INVALID_CHANNEL,sizeof(gdth_iochan_str))) {
1754             for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
1755                 ha->raw[bus_no].address = ioc->list[bus_no].address;
1756                 ha->raw[bus_no].local_no = ioc->list[bus_no].local_no;
1757             }
1758         } else {
1759             for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
1760                 ha->raw[bus_no].address = IO_CHANNEL;
1761                 ha->raw[bus_no].local_no = bus_no;
1762             }
1763         }
1764         for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
1765             chn = (gdth_getch_str *)ha->pscratch;
1766             chn->channel_no = ha->raw[bus_no].local_no;
1767             if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1768                                   SCSI_CHAN_CNT | L_CTRL_PATTERN,
1769                                   ha->raw[bus_no].address | INVALID_CHANNEL,
1770                                   sizeof(gdth_getch_str))) {
1771                 ha->raw[bus_no].pdev_cnt = chn->drive_cnt;
1772                 TRACE2(("Channel %d: %d phys. drives\n",
1773                         bus_no,chn->drive_cnt));
1774             }
1775             if (ha->raw[bus_no].pdev_cnt > 0) {
1776                 drl = (gdth_drlist_str *)ha->pscratch;
1777                 drl->sc_no = ha->raw[bus_no].local_no;
1778                 drl->sc_cnt = ha->raw[bus_no].pdev_cnt;
1779                 if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1780                                       SCSI_DR_LIST | L_CTRL_PATTERN,
1781                                       ha->raw[bus_no].address | INVALID_CHANNEL,
1782                                       sizeof(gdth_drlist_str))) {
1783                     for (j = 0; j < ha->raw[bus_no].pdev_cnt; ++j) 
1784                         ha->raw[bus_no].id_list[j] = drl->sc_list[j];
1785                 } else {
1786                     ha->raw[bus_no].pdev_cnt = 0;
1787                 }
1788             }
1789         }
1790
1791         /* logical drives */
1792         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, CACHE_DRV_CNT,
1793                               INVALID_CHANNEL,sizeof(u32))) {
1794             drv_cnt = *(u32 *)ha->pscratch;
1795             if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, CACHE_DRV_LIST,
1796                                   INVALID_CHANNEL,drv_cnt * sizeof(u32))) {
1797                 for (j = 0; j < drv_cnt; ++j) {
1798                     drv_no = ((u32 *)ha->pscratch)[j];
1799                     if (drv_no < MAX_LDRIVES) {
1800                         ha->hdr[drv_no].is_logdrv = TRUE;
1801                         TRACE2(("Drive %d is log. drive\n",drv_no));
1802                     }
1803                 }
1804             }
1805             alst = (gdth_arcdl_str *)ha->pscratch;
1806             alst->entries_avail = MAX_LDRIVES;
1807             alst->first_entry = 0;
1808             alst->list_offset = GDTOFFSOF(gdth_arcdl_str, list[0]);
1809             if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1810                                   ARRAY_DRV_LIST2 | LA_CTRL_PATTERN, 
1811                                   INVALID_CHANNEL, sizeof(gdth_arcdl_str) +
1812                                   (alst->entries_avail-1) * sizeof(gdth_alist_str))) { 
1813                 for (j = 0; j < alst->entries_init; ++j) {
1814                     ha->hdr[j].is_arraydrv = alst->list[j].is_arrayd;
1815                     ha->hdr[j].is_master = alst->list[j].is_master;
1816                     ha->hdr[j].is_parity = alst->list[j].is_parity;
1817                     ha->hdr[j].is_hotfix = alst->list[j].is_hotfix;
1818                     ha->hdr[j].master_no = alst->list[j].cd_handle;
1819                 }
1820             } else if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1821                                          ARRAY_DRV_LIST | LA_CTRL_PATTERN,
1822                                          0, 35 * sizeof(gdth_alist_str))) {
1823                 for (j = 0; j < 35; ++j) {
1824                     alst2 = &((gdth_alist_str *)ha->pscratch)[j];
1825                     ha->hdr[j].is_arraydrv = alst2->is_arrayd;
1826                     ha->hdr[j].is_master = alst2->is_master;
1827                     ha->hdr[j].is_parity = alst2->is_parity;
1828                     ha->hdr[j].is_hotfix = alst2->is_hotfix;
1829                     ha->hdr[j].master_no = alst2->cd_handle;
1830                 }
1831             }
1832         }
1833     }       
1834                                   
1835     /* initialize raw service */
1836     ha->raw_feat = 0;
1837     if (!force_dma32) {
1838         ok = gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_X_INIT_RAW, 0, 0, 0);
1839         if (ok)
1840             ha->raw_feat = GDT_64BIT;
1841     }
1842     if (force_dma32 || (!ok && ha->status == (u16)S_NOFUNC))
1843         ok = gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_INIT, 0, 0, 0);
1844     if (!ok) {
1845         printk("GDT-HA %d: Initialization error raw service (code %d)\n",
1846                ha->hanum, ha->status);
1847         return 0;
1848     }
1849     TRACE2(("gdth_search_drives(): RAWSERVICE initialized\n"));
1850
1851     /* set/get features raw service (scatter/gather) */
1852     if (gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_SET_FEAT, SCATTER_GATHER,
1853                           0, 0)) {
1854         TRACE2(("gdth_search_drives(): set features RAWSERVICE OK\n"));
1855         if (gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_GET_FEAT, 0, 0, 0)) {
1856             TRACE2(("gdth_search_dr(): get feat RAWSERVICE %d\n",
1857                     ha->info));
1858             ha->raw_feat |= (u16)ha->info;
1859         }
1860     } 
1861
1862     /* set/get features cache service (equal to raw service) */
1863     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_SET_FEAT, 0,
1864                           SCATTER_GATHER,0)) {
1865         TRACE2(("gdth_search_drives(): set features CACHESERVICE OK\n"));
1866         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_GET_FEAT, 0, 0, 0)) {
1867             TRACE2(("gdth_search_dr(): get feat CACHESERV. %d\n",
1868                     ha->info));
1869             ha->cache_feat |= (u16)ha->info;
1870         }
1871     }
1872
1873     /* reserve drives for raw service */
1874     if (reserve_mode != 0) {
1875         gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_RESERVE_ALL,
1876                           reserve_mode == 1 ? 1 : 3, 0, 0);
1877         TRACE2(("gdth_search_drives(): RESERVE_ALL code %d\n", 
1878                 ha->status));
1879     }
1880     for (i = 0; i < MAX_RES_ARGS; i += 4) {
1881         if (reserve_list[i] == ha->hanum && reserve_list[i+1] < ha->bus_cnt &&
1882             reserve_list[i+2] < ha->tid_cnt && reserve_list[i+3] < MAXLUN) {
1883             TRACE2(("gdth_search_drives(): reserve ha %d bus %d id %d lun %d\n",
1884                     reserve_list[i], reserve_list[i+1],
1885                     reserve_list[i+2], reserve_list[i+3]));
1886             if (!gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_RESERVE, 0,
1887                                    reserve_list[i+1], reserve_list[i+2] | 
1888                                    (reserve_list[i+3] << 8))) {
1889                 printk("GDT-HA %d: Error raw service (RESERVE, code %d)\n",
1890                        ha->hanum, ha->status);
1891              }
1892         }
1893     }
1894
1895     /* Determine OEM string using IOCTL */
1896     oemstr = (gdth_oem_str_ioctl *)ha->pscratch;
1897     oemstr->params.ctl_version = 0x01;
1898     oemstr->params.buffer_size = sizeof(oemstr->text);
1899     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1900                           CACHE_READ_OEM_STRING_RECORD,INVALID_CHANNEL,
1901                           sizeof(gdth_oem_str_ioctl))) {
1902         TRACE2(("gdth_search_drives(): CACHE_READ_OEM_STRING_RECORD OK\n"));
1903         printk("GDT-HA %d: Vendor: %s Name: %s\n",
1904                ha->hanum, oemstr->text.oem_company_name, ha->binfo.type_string);
1905         /* Save the Host Drive inquiry data */
1906         strlcpy(ha->oem_name,oemstr->text.scsi_host_drive_inquiry_vendor_id,
1907                 sizeof(ha->oem_name));
1908     } else {
1909         /* Old method, based on PCI ID */
1910         TRACE2(("gdth_search_drives(): CACHE_READ_OEM_STRING_RECORD failed\n"));
1911         printk("GDT-HA %d: Name: %s\n",
1912                ha->hanum, ha->binfo.type_string);
1913         if (ha->oem_id == OEM_ID_INTEL)
1914             strlcpy(ha->oem_name,"Intel  ", sizeof(ha->oem_name));
1915         else
1916             strlcpy(ha->oem_name,"ICP    ", sizeof(ha->oem_name));
1917     }
1918
1919     /* scanning for host drives */
1920     for (i = 0; i < cdev_cnt; ++i) 
1921         gdth_analyse_hdrive(ha, i);
1922     
1923     TRACE(("gdth_search_drives() OK\n"));
1924     return 1;
1925 }
1926
1927 static int gdth_analyse_hdrive(gdth_ha_str *ha, u16 hdrive)
1928 {
1929     u32 drv_cyls;
1930     int drv_hds, drv_secs;
1931
1932     TRACE(("gdth_analyse_hdrive() hanum %d drive %d\n", ha->hanum, hdrive));
1933     if (hdrive >= MAX_HDRIVES)
1934         return 0;
1935
1936     if (!gdth_internal_cmd(ha, CACHESERVICE, GDT_INFO, hdrive, 0, 0))
1937         return 0;
1938     ha->hdr[hdrive].present = TRUE;
1939     ha->hdr[hdrive].size = ha->info;
1940    
1941     /* evaluate mapping (sectors per head, heads per cylinder) */
1942     ha->hdr[hdrive].size &= ~SECS32;
1943     if (ha->info2 == 0) {
1944         gdth_eval_mapping(ha->hdr[hdrive].size,&drv_cyls,&drv_hds,&drv_secs);
1945     } else {
1946         drv_hds = ha->info2 & 0xff;
1947         drv_secs = (ha->info2 >> 8) & 0xff;
1948         drv_cyls = (u32)ha->hdr[hdrive].size / drv_hds / drv_secs;
1949     }
1950     ha->hdr[hdrive].heads = (u8)drv_hds;
1951     ha->hdr[hdrive].secs  = (u8)drv_secs;
1952     /* round size */
1953     ha->hdr[hdrive].size  = drv_cyls * drv_hds * drv_secs;
1954     
1955     if (ha->cache_feat & GDT_64BIT) {
1956         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_X_INFO, hdrive, 0, 0)
1957             && ha->info2 != 0) {
1958             ha->hdr[hdrive].size = ((u64)ha->info2 << 32) | ha->info;
1959         }
1960     }
1961     TRACE2(("gdth_search_dr() cdr. %d size %d hds %d scs %d\n",
1962             hdrive,ha->hdr[hdrive].size,drv_hds,drv_secs));
1963
1964     /* get informations about device */
1965     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_DEVTYPE, hdrive, 0, 0)) {
1966         TRACE2(("gdth_search_dr() cache drive %d devtype %d\n",
1967                 hdrive,ha->info));
1968         ha->hdr[hdrive].devtype = (u16)ha->info;
1969     }
1970
1971     /* cluster info */
1972     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_CLUST_INFO, hdrive, 0, 0)) {
1973         TRACE2(("gdth_search_dr() cache drive %d cluster info %d\n",
1974                 hdrive,ha->info));
1975         if (!shared_access)
1976             ha->hdr[hdrive].cluster_type = (u8)ha->info;
1977     }
1978
1979     /* R/W attributes */
1980     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_RW_ATTRIBS, hdrive, 0, 0)) {
1981         TRACE2(("gdth_search_dr() cache drive %d r/w attrib. %d\n",
1982                 hdrive,ha->info));
1983         ha->hdr[hdrive].rw_attribs = (u8)ha->info;
1984     }
1985
1986     return 1;
1987 }
1988
1989
1990 /* command queueing/sending functions */
1991
1992 static void gdth_putq(gdth_ha_str *ha, Scsi_Cmnd *scp, u8 priority)
1993 {
1994     struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
1995     register Scsi_Cmnd *pscp;
1996     register Scsi_Cmnd *nscp;
1997     unsigned long flags;
1998
1999     TRACE(("gdth_putq() priority %d\n",priority));
2000     spin_lock_irqsave(&ha->smp_lock, flags);
2001
2002     if (!cmndinfo->internal_command)
2003         cmndinfo->priority = priority;
2004
2005     if (ha->req_first==NULL) {
2006         ha->req_first = scp;                    /* queue was empty */
2007         scp->SCp.ptr = NULL;
2008     } else {                                    /* queue not empty */
2009         pscp = ha->req_first;
2010         nscp = (Scsi_Cmnd *)pscp->SCp.ptr;
2011         /* priority: 0-highest,..,0xff-lowest */
2012         while (nscp && gdth_cmnd_priv(nscp)->priority <= priority) {
2013             pscp = nscp;
2014             nscp = (Scsi_Cmnd *)pscp->SCp.ptr;
2015         }
2016         pscp->SCp.ptr = (char *)scp;
2017         scp->SCp.ptr  = (char *)nscp;
2018     }
2019     spin_unlock_irqrestore(&ha->smp_lock, flags);
2020
2021 #ifdef GDTH_STATISTICS
2022     flags = 0;
2023     for (nscp=ha->req_first; nscp; nscp=(Scsi_Cmnd*)nscp->SCp.ptr)
2024         ++flags;
2025     if (max_rq < flags) {
2026         max_rq = flags;
2027         TRACE3(("GDT: max_rq = %d\n",(u16)max_rq));
2028     }
2029 #endif
2030 }
2031
2032 static void gdth_next(gdth_ha_str *ha)
2033 {
2034     register Scsi_Cmnd *pscp;
2035     register Scsi_Cmnd *nscp;
2036     u8 b, t, l, firsttime;
2037     u8 this_cmd, next_cmd;
2038     unsigned long flags = 0;
2039     int cmd_index;
2040
2041     TRACE(("gdth_next() hanum %d\n", ha->hanum));
2042     if (!gdth_polling) 
2043         spin_lock_irqsave(&ha->smp_lock, flags);
2044
2045     ha->cmd_cnt = ha->cmd_offs_dpmem = 0;
2046     this_cmd = firsttime = TRUE;
2047     next_cmd = gdth_polling ? FALSE:TRUE;
2048     cmd_index = 0;
2049
2050     for (nscp = pscp = ha->req_first; nscp; nscp = (Scsi_Cmnd *)nscp->SCp.ptr) {
2051         struct gdth_cmndinfo *nscp_cmndinfo = gdth_cmnd_priv(nscp);
2052         if (nscp != pscp && nscp != (Scsi_Cmnd *)pscp->SCp.ptr)
2053             pscp = (Scsi_Cmnd *)pscp->SCp.ptr;
2054         if (!nscp_cmndinfo->internal_command) {
2055             b = nscp->device->channel;
2056             t = nscp->device->id;
2057             l = nscp->device->lun;
2058             if (nscp_cmndinfo->priority >= DEFAULT_PRI) {
2059                 if ((b != ha->virt_bus && ha->raw[BUS_L2P(ha,b)].lock) ||
2060                     (b == ha->virt_bus && t < MAX_HDRIVES && ha->hdr[t].lock))
2061                     continue;
2062             }
2063         } else
2064             b = t = l = 0;
2065
2066         if (firsttime) {
2067             if (gdth_test_busy(ha)) {        /* controller busy ? */
2068                 TRACE(("gdth_next() controller %d busy !\n", ha->hanum));
2069                 if (!gdth_polling) {
2070                     spin_unlock_irqrestore(&ha->smp_lock, flags);
2071                     return;
2072                 }
2073                 while (gdth_test_busy(ha))
2074                     gdth_delay(1);
2075             }   
2076             firsttime = FALSE;
2077         }
2078
2079         if (!nscp_cmndinfo->internal_command) {
2080         if (nscp_cmndinfo->phase == -1) {
2081             nscp_cmndinfo->phase = CACHESERVICE;           /* default: cache svc. */
2082             if (nscp->cmnd[0] == TEST_UNIT_READY) {
2083                 TRACE2(("TEST_UNIT_READY Bus %d Id %d LUN %d\n", 
2084                         b, t, l));
2085                 /* TEST_UNIT_READY -> set scan mode */
2086                 if ((ha->scan_mode & 0x0f) == 0) {
2087                     if (b == 0 && t == 0 && l == 0) {
2088                         ha->scan_mode |= 1;
2089                         TRACE2(("Scan mode: 0x%x\n", ha->scan_mode));
2090                     }
2091                 } else if ((ha->scan_mode & 0x0f) == 1) {
2092                     if (b == 0 && ((t == 0 && l == 1) ||
2093                          (t == 1 && l == 0))) {
2094                         nscp_cmndinfo->OpCode = GDT_SCAN_START;
2095                         nscp_cmndinfo->phase = ((ha->scan_mode & 0x10 ? 1:0) << 8)
2096                             | SCSIRAWSERVICE;
2097                         ha->scan_mode = 0x12;
2098                         TRACE2(("Scan mode: 0x%x (SCAN_START)\n", 
2099                                 ha->scan_mode));
2100                     } else {
2101                         ha->scan_mode &= 0x10;
2102                         TRACE2(("Scan mode: 0x%x\n", ha->scan_mode));
2103                     }                   
2104                 } else if (ha->scan_mode == 0x12) {
2105                     if (b == ha->bus_cnt && t == ha->tid_cnt-1) {
2106                         nscp_cmndinfo->phase = SCSIRAWSERVICE;
2107                         nscp_cmndinfo->OpCode = GDT_SCAN_END;
2108                         ha->scan_mode &= 0x10;
2109                         TRACE2(("Scan mode: 0x%x (SCAN_END)\n", 
2110                                 ha->scan_mode));
2111                     }
2112                 }
2113             }
2114             if (b == ha->virt_bus && nscp->cmnd[0] != INQUIRY &&
2115                 nscp->cmnd[0] != READ_CAPACITY && nscp->cmnd[0] != MODE_SENSE &&
2116                 (ha->hdr[t].cluster_type & CLUSTER_DRIVE)) {
2117                 /* always GDT_CLUST_INFO! */
2118                 nscp_cmndinfo->OpCode = GDT_CLUST_INFO;
2119             }
2120         }
2121         }
2122
2123         if (nscp_cmndinfo->OpCode != -1) {
2124             if ((nscp_cmndinfo->phase & 0xff) == CACHESERVICE) {
2125                 if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
2126                     this_cmd = FALSE;
2127                 next_cmd = FALSE;
2128             } else if ((nscp_cmndinfo->phase & 0xff) == SCSIRAWSERVICE) {
2129                 if (!(cmd_index=gdth_fill_raw_cmd(ha, nscp, BUS_L2P(ha, b))))
2130                     this_cmd = FALSE;
2131                 next_cmd = FALSE;
2132             } else {
2133                 memset((char*)nscp->sense_buffer,0,16);
2134                 nscp->sense_buffer[0] = 0x70;
2135                 nscp->sense_buffer[2] = NOT_READY;
2136                 nscp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
2137                 if (!nscp_cmndinfo->wait_for_completion)
2138                     nscp_cmndinfo->wait_for_completion++;
2139                 else
2140                     gdth_scsi_done(nscp);
2141             }
2142         } else if (gdth_cmnd_priv(nscp)->internal_command) {
2143             if (!(cmd_index=gdth_special_cmd(ha, nscp)))
2144                 this_cmd = FALSE;
2145             next_cmd = FALSE;
2146         } else if (b != ha->virt_bus) {
2147             if (ha->raw[BUS_L2P(ha,b)].io_cnt[t] >= GDTH_MAX_RAW ||
2148                 !(cmd_index=gdth_fill_raw_cmd(ha, nscp, BUS_L2P(ha, b))))
2149                 this_cmd = FALSE;
2150             else 
2151                 ha->raw[BUS_L2P(ha,b)].io_cnt[t]++;
2152         } else if (t >= MAX_HDRIVES || !ha->hdr[t].present || l != 0) {
2153             TRACE2(("Command 0x%x to bus %d id %d lun %d -> IGNORE\n",
2154                     nscp->cmnd[0], b, t, l));
2155             nscp->result = DID_BAD_TARGET << 16;
2156             if (!nscp_cmndinfo->wait_for_completion)
2157                 nscp_cmndinfo->wait_for_completion++;
2158             else
2159                 gdth_scsi_done(nscp);
2160         } else {
2161             switch (nscp->cmnd[0]) {
2162               case TEST_UNIT_READY:
2163               case INQUIRY:
2164               case REQUEST_SENSE:
2165               case READ_CAPACITY:
2166               case VERIFY:
2167               case START_STOP:
2168               case MODE_SENSE:
2169               case SERVICE_ACTION_IN:
2170                 TRACE(("cache cmd %x/%x/%x/%x/%x/%x\n",nscp->cmnd[0],
2171                        nscp->cmnd[1],nscp->cmnd[2],nscp->cmnd[3],
2172                        nscp->cmnd[4],nscp->cmnd[5]));
2173                 if (ha->hdr[t].media_changed && nscp->cmnd[0] != INQUIRY) {
2174                     /* return UNIT_ATTENTION */
2175                     TRACE2(("cmd 0x%x target %d: UNIT_ATTENTION\n",
2176                              nscp->cmnd[0], t));
2177                     ha->hdr[t].media_changed = FALSE;
2178                     memset((char*)nscp->sense_buffer,0,16);
2179                     nscp->sense_buffer[0] = 0x70;
2180                     nscp->sense_buffer[2] = UNIT_ATTENTION;
2181                     nscp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
2182                     if (!nscp_cmndinfo->wait_for_completion)
2183                         nscp_cmndinfo->wait_for_completion++;
2184                     else
2185                         gdth_scsi_done(nscp);
2186                 } else if (gdth_internal_cache_cmd(ha, nscp))
2187                     gdth_scsi_done(nscp);
2188                 break;
2189
2190               case ALLOW_MEDIUM_REMOVAL:
2191                 TRACE(("cache cmd %x/%x/%x/%x/%x/%x\n",nscp->cmnd[0],
2192                        nscp->cmnd[1],nscp->cmnd[2],nscp->cmnd[3],
2193                        nscp->cmnd[4],nscp->cmnd[5]));
2194                 if ( (nscp->cmnd[4]&1) && !(ha->hdr[t].devtype&1) ) {
2195                     TRACE(("Prevent r. nonremov. drive->do nothing\n"));
2196                     nscp->result = DID_OK << 16;
2197                     nscp->sense_buffer[0] = 0;
2198                     if (!nscp_cmndinfo->wait_for_completion)
2199                         nscp_cmndinfo->wait_for_completion++;
2200                     else
2201                         gdth_scsi_done(nscp);
2202                 } else {
2203                     nscp->cmnd[3] = (ha->hdr[t].devtype&1) ? 1:0;
2204                     TRACE(("Prevent/allow r. %d rem. drive %d\n",
2205                            nscp->cmnd[4],nscp->cmnd[3]));
2206                     if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
2207                         this_cmd = FALSE;
2208                 }
2209                 break;
2210                 
2211               case RESERVE:
2212               case RELEASE:
2213                 TRACE2(("cache cmd %s\n",nscp->cmnd[0] == RESERVE ?
2214                         "RESERVE" : "RELEASE"));
2215                 if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
2216                     this_cmd = FALSE;
2217                 break;
2218                 
2219               case READ_6:
2220               case WRITE_6:
2221               case READ_10:
2222               case WRITE_10:
2223               case READ_16:
2224               case WRITE_16:
2225                 if (ha->hdr[t].media_changed) {
2226                     /* return UNIT_ATTENTION */
2227                     TRACE2(("cmd 0x%x target %d: UNIT_ATTENTION\n",
2228                              nscp->cmnd[0], t));
2229                     ha->hdr[t].media_changed = FALSE;
2230                     memset((char*)nscp->sense_buffer,0,16);
2231                     nscp->sense_buffer[0] = 0x70;
2232                     nscp->sense_buffer[2] = UNIT_ATTENTION;
2233                     nscp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
2234                     if (!nscp_cmndinfo->wait_for_completion)
2235                         nscp_cmndinfo->wait_for_completion++;
2236                     else
2237                         gdth_scsi_done(nscp);
2238                 } else if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
2239                     this_cmd = FALSE;
2240                 break;
2241
2242               default:
2243                 TRACE2(("cache cmd %x/%x/%x/%x/%x/%x unknown\n",nscp->cmnd[0],
2244                         nscp->cmnd[1],nscp->cmnd[2],nscp->cmnd[3],
2245                         nscp->cmnd[4],nscp->cmnd[5]));
2246                 printk("GDT-HA %d: Unknown SCSI command 0x%x to cache service !\n",
2247                        ha->hanum, nscp->cmnd[0]);
2248                 nscp->result = DID_ABORT << 16;
2249                 if (!nscp_cmndinfo->wait_for_completion)
2250                     nscp_cmndinfo->wait_for_completion++;
2251                 else
2252                     gdth_scsi_done(nscp);
2253                 break;
2254             }
2255         }
2256
2257         if (!this_cmd)
2258             break;
2259         if (nscp == ha->req_first)
2260             ha->req_first = pscp = (Scsi_Cmnd *)nscp->SCp.ptr;
2261         else
2262             pscp->SCp.ptr = nscp->SCp.ptr;
2263         if (!next_cmd)
2264             break;
2265     }
2266
2267     if (ha->cmd_cnt > 0) {
2268         gdth_release_event(ha);
2269     }
2270
2271     if (!gdth_polling) 
2272         spin_unlock_irqrestore(&ha->smp_lock, flags);
2273
2274     if (gdth_polling && ha->cmd_cnt > 0) {
2275         if (!gdth_wait(ha, cmd_index, POLL_TIMEOUT))
2276             printk("GDT-HA %d: Command %d timed out !\n",
2277                    ha->hanum, cmd_index);
2278     }
2279 }
2280
2281 /*
2282  * gdth_copy_internal_data() - copy to/from a buffer onto a scsi_cmnd's
2283  * buffers, kmap_atomic() as needed.
2284  */
2285 static void gdth_copy_internal_data(gdth_ha_str *ha, Scsi_Cmnd *scp,
2286                                     char *buffer, u16 count)
2287 {
2288     u16 cpcount,i, max_sg = scsi_sg_count(scp);
2289     u16 cpsum,cpnow;
2290     struct scatterlist *sl;
2291     char *address;
2292
2293     cpcount = min_t(u16, count, scsi_bufflen(scp));
2294
2295     if (cpcount) {
2296         cpsum=0;
2297         scsi_for_each_sg(scp, sl, max_sg, i) {
2298             unsigned long flags;
2299             cpnow = (u16)sl->length;
2300             TRACE(("copy_internal() now %d sum %d count %d %d\n",
2301                           cpnow, cpsum, cpcount, scsi_bufflen(scp)));
2302             if (cpsum+cpnow > cpcount) 
2303                 cpnow = cpcount - cpsum;
2304             cpsum += cpnow;
2305             if (!sg_page(sl)) {
2306                 printk("GDT-HA %d: invalid sc/gt element in gdth_copy_internal_data()\n",
2307                        ha->hanum);
2308                 return;
2309             }
2310             local_irq_save(flags);
2311             address = kmap_atomic(sg_page(sl), KM_BIO_SRC_IRQ) + sl->offset;
2312             memcpy(address, buffer, cpnow);
2313             flush_dcache_page(sg_page(sl));
2314             kunmap_atomic(address, KM_BIO_SRC_IRQ);
2315             local_irq_restore(flags);
2316             if (cpsum == cpcount)
2317                 break;
2318             buffer += cpnow;
2319         }
2320     } else if (count) {
2321         printk("GDT-HA %d: SCSI command with no buffers but data transfer expected!\n",
2322                ha->hanum);
2323         WARN_ON(1);
2324     }
2325 }
2326
2327 static int gdth_internal_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp)
2328 {
2329     u8 t;
2330     gdth_inq_data inq;
2331     gdth_rdcap_data rdc;
2332     gdth_sense_data sd;
2333     gdth_modep_data mpd;
2334     struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
2335
2336     t  = scp->device->id;
2337     TRACE(("gdth_internal_cache_cmd() cmd 0x%x hdrive %d\n",
2338            scp->cmnd[0],t));
2339
2340     scp->result = DID_OK << 16;
2341     scp->sense_buffer[0] = 0;
2342
2343     switch (scp->cmnd[0]) {
2344       case TEST_UNIT_READY:
2345       case VERIFY:
2346       case START_STOP:
2347         TRACE2(("Test/Verify/Start hdrive %d\n",t));
2348         break;
2349
2350       case INQUIRY:
2351         TRACE2(("Inquiry hdrive %d devtype %d\n",
2352                 t,ha->hdr[t].devtype));
2353         inq.type_qual = (ha->hdr[t].devtype&4) ? TYPE_ROM:TYPE_DISK;
2354         /* you can here set all disks to removable, if you want to do
2355            a flush using the ALLOW_MEDIUM_REMOVAL command */
2356         inq.modif_rmb = 0x00;
2357         if ((ha->hdr[t].devtype & 1) ||
2358             (ha->hdr[t].cluster_type & CLUSTER_DRIVE))
2359             inq.modif_rmb = 0x80;
2360         inq.version   = 2;
2361         inq.resp_aenc = 2;
2362         inq.add_length= 32;
2363         strcpy(inq.vendor,ha->oem_name);
2364         sprintf(inq.product,"Host Drive  #%02d",t);
2365         strcpy(inq.revision,"   ");
2366         gdth_copy_internal_data(ha, scp, (char*)&inq, sizeof(gdth_inq_data));
2367         break;
2368
2369       case REQUEST_SENSE:
2370         TRACE2(("Request sense hdrive %d\n",t));
2371         sd.errorcode = 0x70;
2372         sd.segno     = 0x00;
2373         sd.key       = NO_SENSE;
2374         sd.info      = 0;
2375         sd.add_length= 0;
2376         gdth_copy_internal_data(ha, scp, (char*)&sd, sizeof(gdth_sense_data));
2377         break;
2378
2379       case MODE_SENSE:
2380         TRACE2(("Mode sense hdrive %d\n",t));
2381         memset((char*)&mpd,0,sizeof(gdth_modep_data));
2382         mpd.hd.data_length = sizeof(gdth_modep_data);
2383         mpd.hd.dev_par     = (ha->hdr[t].devtype&2) ? 0x80:0;
2384         mpd.hd.bd_length   = sizeof(mpd.bd);
2385         mpd.bd.block_length[0] = (SECTOR_SIZE & 0x00ff0000) >> 16;
2386         mpd.bd.block_length[1] = (SECTOR_SIZE & 0x0000ff00) >> 8;
2387         mpd.bd.block_length[2] = (SECTOR_SIZE & 0x000000ff);
2388         gdth_copy_internal_data(ha, scp, (char*)&mpd, sizeof(gdth_modep_data));
2389         break;
2390
2391       case READ_CAPACITY:
2392         TRACE2(("Read capacity hdrive %d\n",t));
2393         if (ha->hdr[t].size > (u64)0xffffffff)
2394             rdc.last_block_no = 0xffffffff;
2395         else
2396             rdc.last_block_no = cpu_to_be32(ha->hdr[t].size-1);
2397         rdc.block_length  = cpu_to_be32(SECTOR_SIZE);
2398         gdth_copy_internal_data(ha, scp, (char*)&rdc, sizeof(gdth_rdcap_data));
2399         break;
2400
2401       case SERVICE_ACTION_IN:
2402         if ((scp->cmnd[1] & 0x1f) == SAI_READ_CAPACITY_16 &&
2403             (ha->cache_feat & GDT_64BIT)) {
2404             gdth_rdcap16_data rdc16;
2405
2406             TRACE2(("Read capacity (16) hdrive %d\n",t));
2407             rdc16.last_block_no = cpu_to_be64(ha->hdr[t].size-1);
2408             rdc16.block_length  = cpu_to_be32(SECTOR_SIZE);
2409             gdth_copy_internal_data(ha, scp, (char*)&rdc16,
2410                                                  sizeof(gdth_rdcap16_data));
2411         } else { 
2412             scp->result = DID_ABORT << 16;
2413         }
2414         break;
2415
2416       default:
2417         TRACE2(("Internal cache cmd 0x%x unknown\n",scp->cmnd[0]));
2418         break;
2419     }
2420
2421     if (!cmndinfo->wait_for_completion)
2422         cmndinfo->wait_for_completion++;
2423     else 
2424         return 1;
2425
2426     return 0;
2427 }
2428
2429 static int gdth_fill_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, u16 hdrive)
2430 {
2431     register gdth_cmd_str *cmdp;
2432     struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
2433     u32 cnt, blockcnt;
2434     u64 no, blockno;
2435     int i, cmd_index, read_write, sgcnt, mode64;
2436
2437     cmdp = ha->pccb;
2438     TRACE(("gdth_fill_cache_cmd() cmd 0x%x cmdsize %d hdrive %d\n",
2439                  scp->cmnd[0],scp->cmd_len,hdrive));
2440
2441     if (ha->type==GDT_EISA && ha->cmd_cnt>0) 
2442         return 0;
2443
2444     mode64 = (ha->cache_feat & GDT_64BIT) ? TRUE : FALSE;
2445     /* test for READ_16, WRITE_16 if !mode64 ? ---
2446        not required, should not occur due to error return on 
2447        READ_CAPACITY_16 */
2448
2449     cmdp->Service = CACHESERVICE;
2450     cmdp->RequestBuffer = scp;
2451     /* search free command index */
2452     if (!(cmd_index=gdth_get_cmd_index(ha))) {
2453         TRACE(("GDT: No free command index found\n"));
2454         return 0;
2455     }
2456     /* if it's the first command, set command semaphore */
2457     if (ha->cmd_cnt == 0)
2458         gdth_set_sema0(ha);
2459
2460     /* fill command */
2461     read_write = 0;
2462     if (cmndinfo->OpCode != -1)
2463         cmdp->OpCode = cmndinfo->OpCode;   /* special cache cmd. */
2464     else if (scp->cmnd[0] == RESERVE) 
2465         cmdp->OpCode = GDT_RESERVE_DRV;
2466     else if (scp->cmnd[0] == RELEASE)
2467         cmdp->OpCode = GDT_RELEASE_DRV;
2468     else if (scp->cmnd[0] == ALLOW_MEDIUM_REMOVAL) {
2469         if (scp->cmnd[4] & 1)                   /* prevent ? */
2470             cmdp->OpCode = GDT_MOUNT;
2471         else if (scp->cmnd[3] & 1)              /* removable drive ? */
2472             cmdp->OpCode = GDT_UNMOUNT;
2473         else
2474             cmdp->OpCode = GDT_FLUSH;
2475     } else if (scp->cmnd[0] == WRITE_6 || scp->cmnd[0] == WRITE_10 ||
2476                scp->cmnd[0] == WRITE_12 || scp->cmnd[0] == WRITE_16
2477     ) {
2478         read_write = 1;
2479         if (gdth_write_through || ((ha->hdr[hdrive].rw_attribs & 1) && 
2480                                    (ha->cache_feat & GDT_WR_THROUGH)))
2481             cmdp->OpCode = GDT_WRITE_THR;
2482         else
2483             cmdp->OpCode = GDT_WRITE;
2484     } else {
2485         read_write = 2;
2486         cmdp->OpCode = GDT_READ;
2487     }
2488
2489     cmdp->BoardNode = LOCALBOARD;
2490     if (mode64) {
2491         cmdp->u.cache64.DeviceNo = hdrive;
2492         cmdp->u.cache64.BlockNo  = 1;
2493         cmdp->u.cache64.sg_canz  = 0;
2494     } else {
2495         cmdp->u.cache.DeviceNo = hdrive;
2496         cmdp->u.cache.BlockNo  = 1;
2497         cmdp->u.cache.sg_canz  = 0;
2498     }
2499
2500     if (read_write) {
2501         if (scp->cmd_len == 16) {
2502             memcpy(&no, &scp->cmnd[2], sizeof(u64));
2503             blockno = be64_to_cpu(no);
2504             memcpy(&cnt, &scp->cmnd[10], sizeof(u32));
2505             blockcnt = be32_to_cpu(cnt);
2506         } else if (scp->cmd_len == 10) {
2507             memcpy(&no, &scp->cmnd[2], sizeof(u32));
2508             blockno = be32_to_cpu(no);
2509             memcpy(&cnt, &scp->cmnd[7], sizeof(u16));
2510             blockcnt = be16_to_cpu(cnt);
2511         } else {
2512             memcpy(&no, &scp->cmnd[0], sizeof(u32));
2513             blockno = be32_to_cpu(no) & 0x001fffffUL;
2514             blockcnt= scp->cmnd[4]==0 ? 0x100 : scp->cmnd[4];
2515         }
2516         if (mode64) {
2517             cmdp->u.cache64.BlockNo = blockno;
2518             cmdp->u.cache64.BlockCnt = blockcnt;
2519         } else {
2520             cmdp->u.cache.BlockNo = (u32)blockno;
2521             cmdp->u.cache.BlockCnt = blockcnt;
2522         }
2523
2524         if (scsi_bufflen(scp)) {
2525             cmndinfo->dma_dir = (read_write == 1 ?
2526                 PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE);   
2527             sgcnt = pci_map_sg(ha->pdev, scsi_sglist(scp), scsi_sg_count(scp),
2528                                cmndinfo->dma_dir);
2529             if (mode64) {
2530                 struct scatterlist *sl;
2531
2532                 cmdp->u.cache64.DestAddr= (u64)-1;
2533                 cmdp->u.cache64.sg_canz = sgcnt;
2534                 scsi_for_each_sg(scp, sl, sgcnt, i) {
2535                     cmdp->u.cache64.sg_lst[i].sg_ptr = sg_dma_address(sl);
2536 #ifdef GDTH_DMA_STATISTICS
2537                     if (cmdp->u.cache64.sg_lst[i].sg_ptr > (u64)0xffffffff)
2538                         ha->dma64_cnt++;
2539                     else
2540                         ha->dma32_cnt++;
2541 #endif
2542                     cmdp->u.cache64.sg_lst[i].sg_len = sg_dma_len(sl);
2543                 }
2544             } else {
2545                 struct scatterlist *sl;
2546
2547                 cmdp->u.cache.DestAddr= 0xffffffff;
2548                 cmdp->u.cache.sg_canz = sgcnt;
2549                 scsi_for_each_sg(scp, sl, sgcnt, i) {
2550                     cmdp->u.cache.sg_lst[i].sg_ptr = sg_dma_address(sl);
2551 #ifdef GDTH_DMA_STATISTICS
2552                     ha->dma32_cnt++;
2553 #endif
2554                     cmdp->u.cache.sg_lst[i].sg_len = sg_dma_len(sl);
2555                 }
2556             }
2557
2558 #ifdef GDTH_STATISTICS
2559             if (max_sg < (u32)sgcnt) {
2560                 max_sg = (u32)sgcnt;
2561                 TRACE3(("GDT: max_sg = %d\n",max_sg));
2562             }
2563 #endif
2564
2565         }
2566     }
2567     /* evaluate command size, check space */
2568     if (mode64) {
2569         TRACE(("cache cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
2570                cmdp->u.cache64.DestAddr,cmdp->u.cache64.sg_canz,
2571                cmdp->u.cache64.sg_lst[0].sg_ptr,
2572                cmdp->u.cache64.sg_lst[0].sg_len));
2573         TRACE(("cache cmd: cmd %d blockno. %d, blockcnt %d\n",
2574                cmdp->OpCode,cmdp->u.cache64.BlockNo,cmdp->u.cache64.BlockCnt));
2575         ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.cache64.sg_lst) +
2576             (u16)cmdp->u.cache64.sg_canz * sizeof(gdth_sg64_str);
2577     } else {
2578         TRACE(("cache cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
2579                cmdp->u.cache.DestAddr,cmdp->u.cache.sg_canz,
2580                cmdp->u.cache.sg_lst[0].sg_ptr,
2581                cmdp->u.cache.sg_lst[0].sg_len));
2582         TRACE(("cache cmd: cmd %d blockno. %d, blockcnt %d\n",
2583                cmdp->OpCode,cmdp->u.cache.BlockNo,cmdp->u.cache.BlockCnt));
2584         ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.cache.sg_lst) +
2585             (u16)cmdp->u.cache.sg_canz * sizeof(gdth_sg_str);
2586     }
2587     if (ha->cmd_len & 3)
2588         ha->cmd_len += (4 - (ha->cmd_len & 3));
2589
2590     if (ha->cmd_cnt > 0) {
2591         if ((ha->cmd_offs_dpmem + ha->cmd_len + DPMEM_COMMAND_OFFSET) >
2592             ha->ic_all_size) {
2593             TRACE2(("gdth_fill_cache() DPMEM overflow\n"));
2594             ha->cmd_tab[cmd_index-2].cmnd = UNUSED_CMND;
2595             return 0;
2596         }
2597     }
2598
2599     /* copy command */
2600     gdth_copy_command(ha);
2601     return cmd_index;
2602 }
2603
2604 static int gdth_fill_raw_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, u8 b)
2605 {
2606     register gdth_cmd_str *cmdp;
2607     u16 i;
2608     dma_addr_t sense_paddr;
2609     int cmd_index, sgcnt, mode64;
2610     u8 t,l;
2611     struct page *page;
2612     unsigned long offset;
2613     struct gdth_cmndinfo *cmndinfo;
2614
2615     t = scp->device->id;
2616     l = scp->device->lun;
2617     cmdp = ha->pccb;
2618     TRACE(("gdth_fill_raw_cmd() cmd 0x%x bus %d ID %d LUN %d\n",
2619            scp->cmnd[0],b,t,l));
2620
2621     if (ha->type==GDT_EISA && ha->cmd_cnt>0) 
2622         return 0;
2623
2624     mode64 = (ha->raw_feat & GDT_64BIT) ? TRUE : FALSE;
2625
2626     cmdp->Service = SCSIRAWSERVICE;
2627     cmdp->RequestBuffer = scp;
2628     /* search free command index */
2629     if (!(cmd_index=gdth_get_cmd_index(ha))) {
2630         TRACE(("GDT: No free command index found\n"));
2631         return 0;
2632     }
2633     /* if it's the first command, set command semaphore */
2634     if (ha->cmd_cnt == 0)
2635         gdth_set_sema0(ha);
2636
2637     cmndinfo = gdth_cmnd_priv(scp);
2638     /* fill command */  
2639     if (cmndinfo->OpCode != -1) {
2640         cmdp->OpCode           = cmndinfo->OpCode; /* special raw cmd. */
2641         cmdp->BoardNode        = LOCALBOARD;
2642         if (mode64) {
2643             cmdp->u.raw64.direction = (cmndinfo->phase >> 8);
2644             TRACE2(("special raw cmd 0x%x param 0x%x\n", 
2645                     cmdp->OpCode, cmdp->u.raw64.direction));
2646             /* evaluate command size */
2647             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw64.sg_lst);
2648         } else {
2649             cmdp->u.raw.direction  = (cmndinfo->phase >> 8);
2650             TRACE2(("special raw cmd 0x%x param 0x%x\n", 
2651                     cmdp->OpCode, cmdp->u.raw.direction));
2652             /* evaluate command size */
2653             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw.sg_lst);
2654         }
2655
2656     } else {
2657         page = virt_to_page(scp->sense_buffer);
2658         offset = (unsigned long)scp->sense_buffer & ~PAGE_MASK;
2659         sense_paddr = pci_map_page(ha->pdev,page,offset,
2660                                    16,PCI_DMA_FROMDEVICE);
2661
2662         cmndinfo->sense_paddr  = sense_paddr;
2663         cmdp->OpCode           = GDT_WRITE;             /* always */
2664         cmdp->BoardNode        = LOCALBOARD;
2665         if (mode64) { 
2666             cmdp->u.raw64.reserved   = 0;
2667             cmdp->u.raw64.mdisc_time = 0;
2668             cmdp->u.raw64.mcon_time  = 0;
2669             cmdp->u.raw64.clen       = scp->cmd_len;
2670             cmdp->u.raw64.target     = t;
2671             cmdp->u.raw64.lun        = l;
2672             cmdp->u.raw64.bus        = b;
2673             cmdp->u.raw64.priority   = 0;
2674             cmdp->u.raw64.sdlen      = scsi_bufflen(scp);
2675             cmdp->u.raw64.sense_len  = 16;
2676             cmdp->u.raw64.sense_data = sense_paddr;
2677             cmdp->u.raw64.direction  = 
2678                 gdth_direction_tab[scp->cmnd[0]]==DOU ? GDTH_DATA_OUT:GDTH_DATA_IN;
2679             memcpy(cmdp->u.raw64.cmd,scp->cmnd,16);
2680             cmdp->u.raw64.sg_ranz    = 0;
2681         } else {
2682             cmdp->u.raw.reserved   = 0;
2683             cmdp->u.raw.mdisc_time = 0;
2684             cmdp->u.raw.mcon_time  = 0;
2685             cmdp->u.raw.clen       = scp->cmd_len;
2686             cmdp->u.raw.target     = t;
2687             cmdp->u.raw.lun        = l;
2688             cmdp->u.raw.bus        = b;
2689             cmdp->u.raw.priority   = 0;
2690             cmdp->u.raw.link_p     = 0;
2691             cmdp->u.raw.sdlen      = scsi_bufflen(scp);
2692             cmdp->u.raw.sense_len  = 16;
2693             cmdp->u.raw.sense_data = sense_paddr;
2694             cmdp->u.raw.direction  = 
2695                 gdth_direction_tab[scp->cmnd[0]]==DOU ? GDTH_DATA_OUT:GDTH_DATA_IN;
2696             memcpy(cmdp->u.raw.cmd,scp->cmnd,12);
2697             cmdp->u.raw.sg_ranz    = 0;
2698         }
2699
2700         if (scsi_bufflen(scp)) {
2701             cmndinfo->dma_dir = PCI_DMA_BIDIRECTIONAL;
2702             sgcnt = pci_map_sg(ha->pdev, scsi_sglist(scp), scsi_sg_count(scp),
2703                                cmndinfo->dma_dir);
2704             if (mode64) {
2705                 struct scatterlist *sl;
2706
2707                 cmdp->u.raw64.sdata = (u64)-1;
2708                 cmdp->u.raw64.sg_ranz = sgcnt;
2709                 scsi_for_each_sg(scp, sl, sgcnt, i) {
2710                     cmdp->u.raw64.sg_lst[i].sg_ptr = sg_dma_address(sl);
2711 #ifdef GDTH_DMA_STATISTICS
2712                     if (cmdp->u.raw64.sg_lst[i].sg_ptr > (u64)0xffffffff)
2713                         ha->dma64_cnt++;
2714                     else
2715                         ha->dma32_cnt++;
2716 #endif
2717                     cmdp->u.raw64.sg_lst[i].sg_len = sg_dma_len(sl);
2718                 }
2719             } else {
2720                 struct scatterlist *sl;
2721
2722                 cmdp->u.raw.sdata = 0xffffffff;
2723                 cmdp->u.raw.sg_ranz = sgcnt;
2724                 scsi_for_each_sg(scp, sl, sgcnt, i) {
2725                     cmdp->u.raw.sg_lst[i].sg_ptr = sg_dma_address(sl);
2726 #ifdef GDTH_DMA_STATISTICS
2727                     ha->dma32_cnt++;
2728 #endif
2729                     cmdp->u.raw.sg_lst[i].sg_len = sg_dma_len(sl);
2730                 }
2731             }
2732
2733 #ifdef GDTH_STATISTICS
2734             if (max_sg < sgcnt) {
2735                 max_sg = sgcnt;
2736                 TRACE3(("GDT: max_sg = %d\n",sgcnt));
2737             }
2738 #endif
2739
2740         }
2741         if (mode64) {
2742             TRACE(("raw cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
2743                    cmdp->u.raw64.sdata,cmdp->u.raw64.sg_ranz,
2744                    cmdp->u.raw64.sg_lst[0].sg_ptr,
2745                    cmdp->u.raw64.sg_lst[0].sg_len));
2746             /* evaluate command size */
2747             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw64.sg_lst) +
2748                 (u16)cmdp->u.raw64.sg_ranz * sizeof(gdth_sg64_str);
2749         } else {
2750             TRACE(("raw cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
2751                    cmdp->u.raw.sdata,cmdp->u.raw.sg_ranz,
2752                    cmdp->u.raw.sg_lst[0].sg_ptr,
2753                    cmdp->u.raw.sg_lst[0].sg_len));
2754             /* evaluate command size */
2755             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw.sg_lst) +
2756                 (u16)cmdp->u.raw.sg_ranz * sizeof(gdth_sg_str);
2757         }
2758     }
2759     /* check space */
2760     if (ha->cmd_len & 3)
2761         ha->cmd_len += (4 - (ha->cmd_len & 3));
2762
2763     if (ha->cmd_cnt > 0) {
2764         if ((ha->cmd_offs_dpmem + ha->cmd_len + DPMEM_COMMAND_OFFSET) >
2765             ha->ic_all_size) {
2766             TRACE2(("gdth_fill_raw() DPMEM overflow\n"));
2767             ha->cmd_tab[cmd_index-2].cmnd = UNUSED_CMND;
2768             return 0;
2769         }
2770     }
2771
2772     /* copy command */
2773     gdth_copy_command(ha);
2774     return cmd_index;
2775 }
2776
2777 static int gdth_special_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp)
2778 {
2779     register gdth_cmd_str *cmdp;
2780     struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
2781     int cmd_index;
2782
2783     cmdp= ha->pccb;
2784     TRACE2(("gdth_special_cmd(): "));
2785
2786     if (ha->type==GDT_EISA && ha->cmd_cnt>0) 
2787         return 0;
2788
2789     *cmdp = *cmndinfo->internal_cmd_str;
2790     cmdp->RequestBuffer = scp;
2791
2792     /* search free command index */
2793     if (!(cmd_index=gdth_get_cmd_index(ha))) {
2794         TRACE(("GDT: No free command index found\n"));
2795         return 0;
2796     }
2797
2798     /* if it's the first command, set command semaphore */
2799     if (ha->cmd_cnt == 0)
2800        gdth_set_sema0(ha);
2801
2802     /* evaluate command size, check space */
2803     if (cmdp->OpCode == GDT_IOCTL) {
2804         TRACE2(("IOCTL\n"));
2805         ha->cmd_len = 
2806             GDTOFFSOF(gdth_cmd_str,u.ioctl.p_param) + sizeof(u64);
2807     } else if (cmdp->Service == CACHESERVICE) {
2808         TRACE2(("cache command %d\n",cmdp->OpCode));
2809         if (ha->cache_feat & GDT_64BIT)
2810             ha->cmd_len = 
2811                 GDTOFFSOF(gdth_cmd_str,u.cache64.sg_lst) + sizeof(gdth_sg64_str);
2812         else
2813             ha->cmd_len = 
2814                 GDTOFFSOF(gdth_cmd_str,u.cache.sg_lst) + sizeof(gdth_sg_str);
2815     } else if (cmdp->Service == SCSIRAWSERVICE) {
2816         TRACE2(("raw command %d\n",cmdp->OpCode));
2817         if (ha->raw_feat & GDT_64BIT)
2818             ha->cmd_len = 
2819                 GDTOFFSOF(gdth_cmd_str,u.raw64.sg_lst) + sizeof(gdth_sg64_str);
2820         else
2821             ha->cmd_len = 
2822                 GDTOFFSOF(gdth_cmd_str,u.raw.sg_lst) + sizeof(gdth_sg_str);
2823     }
2824
2825     if (ha->cmd_len & 3)
2826         ha->cmd_len += (4 - (ha->cmd_len & 3));
2827
2828     if (ha->cmd_cnt > 0) {
2829         if ((ha->cmd_offs_dpmem + ha->cmd_len + DPMEM_COMMAND_OFFSET) >
2830             ha->ic_all_size) {
2831             TRACE2(("gdth_special_cmd() DPMEM overflow\n"));
2832             ha->cmd_tab[cmd_index-2].cmnd = UNUSED_CMND;
2833             return 0;
2834         }
2835     }
2836
2837     /* copy command */
2838     gdth_copy_command(ha);
2839     return cmd_index;
2840 }    
2841
2842
2843 /* Controller event handling functions */
2844 static gdth_evt_str *gdth_store_event(gdth_ha_str *ha, u16 source, 
2845                                       u16 idx, gdth_evt_data *evt)
2846 {
2847     gdth_evt_str *e;
2848     struct timeval tv;
2849
2850     /* no GDTH_LOCK_HA() ! */
2851     TRACE2(("gdth_store_event() source %d idx %d\n", source, idx));
2852     if (source == 0)                        /* no source -> no event */
2853         return NULL;
2854
2855     if (ebuffer[elastidx].event_source == source &&
2856         ebuffer[elastidx].event_idx == idx &&
2857         ((evt->size != 0 && ebuffer[elastidx].event_data.size != 0 &&
2858             !memcmp((char *)&ebuffer[elastidx].event_data.eu,
2859             (char *)&evt->eu, evt->size)) ||
2860         (evt->size == 0 && ebuffer[elastidx].event_data.size == 0 &&
2861             !strcmp((char *)&ebuffer[elastidx].event_data.event_string,
2862             (char *)&evt->event_string)))) { 
2863         e = &ebuffer[elastidx];
2864         do_gettimeofday(&tv);
2865         e->last_stamp = tv.tv_sec;
2866         ++e->same_count;
2867     } else {
2868         if (ebuffer[elastidx].event_source != 0) {  /* entry not free ? */
2869             ++elastidx;
2870             if (elastidx == MAX_EVENTS)
2871                 elastidx = 0;
2872             if (elastidx == eoldidx) {              /* reached mark ? */
2873                 ++eoldidx;
2874                 if (eoldidx == MAX_EVENTS)
2875                     eoldidx = 0;
2876             }
2877         }
2878         e = &ebuffer[elastidx];
2879         e->event_source = source;
2880         e->event_idx = idx;
2881         do_gettimeofday(&tv);
2882         e->first_stamp = e->last_stamp = tv.tv_sec;
2883         e->same_count = 1;
2884         e->event_data = *evt;
2885         e->application = 0;
2886     }
2887     return e;
2888 }
2889
2890 static int gdth_read_event(gdth_ha_str *ha, int handle, gdth_evt_str *estr)
2891 {
2892     gdth_evt_str *e;
2893     int eindex;
2894     unsigned long flags;
2895
2896     TRACE2(("gdth_read_event() handle %d\n", handle));
2897     spin_lock_irqsave(&ha->smp_lock, flags);
2898     if (handle == -1)
2899         eindex = eoldidx;
2900     else
2901         eindex = handle;
2902     estr->event_source = 0;
2903
2904     if (eindex < 0 || eindex >= MAX_EVENTS) {
2905         spin_unlock_irqrestore(&ha->smp_lock, flags);
2906         return eindex;
2907     }
2908     e = &ebuffer[eindex];
2909     if (e->event_source != 0) {
2910         if (eindex != elastidx) {
2911             if (++eindex == MAX_EVENTS)
2912                 eindex = 0;
2913         } else {
2914             eindex = -1;
2915         }
2916         memcpy(estr, e, sizeof(gdth_evt_str));
2917     }
2918     spin_unlock_irqrestore(&ha->smp_lock, flags);
2919     return eindex;
2920 }
2921
2922 static void gdth_readapp_event(gdth_ha_str *ha,
2923                                u8 application, gdth_evt_str *estr)
2924 {
2925     gdth_evt_str *e;
2926     int eindex;
2927     unsigned long flags;
2928     u8 found = FALSE;
2929
2930     TRACE2(("gdth_readapp_event() app. %d\n", application));
2931     spin_lock_irqsave(&ha->smp_lock, flags);
2932     eindex = eoldidx;
2933     for (;;) {
2934         e = &ebuffer[eindex];
2935         if (e->event_source == 0)
2936             break;
2937         if ((e->application & application) == 0) {
2938             e->application |= application;
2939             found = TRUE;
2940             break;
2941         }
2942         if (eindex == elastidx)
2943             break;
2944         if (++eindex == MAX_EVENTS)
2945             eindex = 0;
2946     }
2947     if (found)
2948         memcpy(estr, e, sizeof(gdth_evt_str));
2949     else
2950         estr->event_source = 0;
2951     spin_unlock_irqrestore(&ha->smp_lock, flags);
2952 }
2953
2954 static void gdth_clear_events(void)
2955 {
2956     TRACE(("gdth_clear_events()"));
2957
2958     eoldidx = elastidx = 0;
2959     ebuffer[0].event_source = 0;
2960 }
2961
2962
2963 /* SCSI interface functions */
2964
2965 static irqreturn_t __gdth_interrupt(gdth_ha_str *ha,
2966                                     int gdth_from_wait, int* pIndex)
2967 {
2968     gdt6m_dpram_str __iomem *dp6m_ptr = NULL;
2969     gdt6_dpram_str __iomem *dp6_ptr;
2970     gdt2_dpram_str __iomem *dp2_ptr;
2971     Scsi_Cmnd *scp;
2972     int rval, i;
2973     u8 IStatus;
2974     u16 Service;
2975     unsigned long flags = 0;
2976 #ifdef INT_COAL
2977     int coalesced = FALSE;
2978     int next = FALSE;
2979     gdth_coal_status *pcs = NULL;
2980     int act_int_coal = 0;       
2981 #endif
2982
2983     TRACE(("gdth_interrupt() IRQ %d\n", ha->irq));
2984
2985     /* if polling and not from gdth_wait() -> return */
2986     if (gdth_polling) {
2987         if (!gdth_from_wait) {
2988             return IRQ_HANDLED;
2989         }
2990     }
2991
2992     if (!gdth_polling)
2993         spin_lock_irqsave(&ha->smp_lock, flags);
2994
2995     /* search controller */
2996     IStatus = gdth_get_status(ha);
2997     if (IStatus == 0) {
2998         /* spurious interrupt */
2999         if (!gdth_polling)
3000             spin_unlock_irqrestore(&ha->smp_lock, flags);
3001         return IRQ_HANDLED;
3002     }
3003
3004 #ifdef GDTH_STATISTICS
3005     ++act_ints;
3006 #endif
3007
3008 #ifdef INT_COAL
3009     /* See if the fw is returning coalesced status */
3010     if (IStatus == COALINDEX) {
3011         /* Coalesced status.  Setup the initial status 
3012            buffer pointer and flags */
3013         pcs = ha->coal_stat;
3014         coalesced = TRUE;        
3015         next = TRUE;
3016     }
3017
3018     do {
3019         if (coalesced) {
3020             /* For coalesced requests all status
3021                information is found in the status buffer */
3022             IStatus = (u8)(pcs->status & 0xff);
3023         }
3024 #endif
3025     
3026         if (ha->type == GDT_EISA) {
3027             if (IStatus & 0x80) {                       /* error flag */
3028                 IStatus &= ~0x80;
3029                 ha->status = inw(ha->bmic + MAILBOXREG+8);
3030                 TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3031             } else                                      /* no error */
3032                 ha->status = S_OK;
3033             ha->info = inl(ha->bmic + MAILBOXREG+12);
3034             ha->service = inw(ha->bmic + MAILBOXREG+10);
3035             ha->info2 = inl(ha->bmic + MAILBOXREG+4);
3036
3037             outb(0xff, ha->bmic + EDOORREG);    /* acknowledge interrupt */
3038             outb(0x00, ha->bmic + SEMA1REG);    /* reset status semaphore */
3039         } else if (ha->type == GDT_ISA) {
3040             dp2_ptr = ha->brd;
3041             if (IStatus & 0x80) {                       /* error flag */
3042                 IStatus &= ~0x80;
3043                 ha->status = readw(&dp2_ptr->u.ic.Status);
3044                 TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3045             } else                                      /* no error */
3046                 ha->status = S_OK;
3047             ha->info = readl(&dp2_ptr->u.ic.Info[0]);
3048             ha->service = readw(&dp2_ptr->u.ic.Service);
3049             ha->info2 = readl(&dp2_ptr->u.ic.Info[1]);
3050
3051             writeb(0xff, &dp2_ptr->io.irqdel); /* acknowledge interrupt */
3052             writeb(0, &dp2_ptr->u.ic.Cmd_Index);/* reset command index */
3053             writeb(0, &dp2_ptr->io.Sema1);     /* reset status semaphore */
3054         } else if (ha->type == GDT_PCI) {
3055             dp6_ptr = ha->brd;
3056             if (IStatus & 0x80) {                       /* error flag */
3057                 IStatus &= ~0x80;
3058                 ha->status = readw(&dp6_ptr->u.ic.Status);
3059                 TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3060             } else                                      /* no error */
3061                 ha->status = S_OK;
3062             ha->info = readl(&dp6_ptr->u.ic.Info[0]);
3063             ha->service = readw(&dp6_ptr->u.ic.Service);
3064             ha->info2 = readl(&dp6_ptr->u.ic.Info[1]);
3065
3066             writeb(0xff, &dp6_ptr->io.irqdel); /* acknowledge interrupt */
3067             writeb(0, &dp6_ptr->u.ic.Cmd_Index);/* reset command index */
3068             writeb(0, &dp6_ptr->io.Sema1);     /* reset status semaphore */
3069         } else if (ha->type == GDT_PCINEW) {
3070             if (IStatus & 0x80) {                       /* error flag */
3071                 IStatus &= ~0x80;
3072                 ha->status = inw(PTR2USHORT(&ha->plx->status));
3073                 TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3074             } else
3075                 ha->status = S_OK;
3076             ha->info = inl(PTR2USHORT(&ha->plx->info[0]));
3077             ha->service = inw(PTR2USHORT(&ha->plx->service));
3078             ha->info2 = inl(PTR2USHORT(&ha->plx->info[1]));
3079
3080             outb(0xff, PTR2USHORT(&ha->plx->edoor_reg)); 
3081             outb(0x00, PTR2USHORT(&ha->plx->sema1_reg)); 
3082         } else if (ha->type == GDT_PCIMPR) {
3083             dp6m_ptr = ha->brd;
3084             if (IStatus & 0x80) {                       /* error flag */
3085                 IStatus &= ~0x80;
3086 #ifdef INT_COAL
3087                 if (coalesced)
3088                     ha->status = pcs->ext_status & 0xffff;
3089                 else 
3090 #endif
3091                     ha->status = readw(&dp6m_ptr->i960r.status);
3092                 TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3093             } else                                      /* no error */
3094                 ha->status = S_OK;
3095 #ifdef INT_COAL
3096             /* get information */
3097             if (coalesced) {    
3098                 ha->info = pcs->info0;
3099                 ha->info2 = pcs->info1;
3100                 ha->service = (pcs->ext_status >> 16) & 0xffff;
3101             } else
3102 #endif
3103             {
3104                 ha->info = readl(&dp6m_ptr->i960r.info[0]);
3105                 ha->service = readw(&dp6m_ptr->i960r.service);
3106                 ha->info2 = readl(&dp6m_ptr->i960r.info[1]);
3107             }
3108             /* event string */
3109             if (IStatus == ASYNCINDEX) {
3110                 if (ha->service != SCREENSERVICE &&
3111                     (ha->fw_vers & 0xff) >= 0x1a) {
3112                     ha->dvr.severity = readb
3113                         (&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.severity);
3114                     for (i = 0; i < 256; ++i) {
3115                         ha->dvr.event_string[i] = readb
3116                             (&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.evt_str[i]);
3117                         if (ha->dvr.event_string[i] == 0)
3118                             break;
3119                     }
3120                 }
3121             }
3122 #ifdef INT_COAL
3123             /* Make sure that non coalesced interrupts get cleared
3124                before being handled by gdth_async_event/gdth_sync_event */
3125             if (!coalesced)
3126 #endif                          
3127             {
3128                 writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
3129                 writeb(0, &dp6m_ptr->i960r.sema1_reg);
3130             }
3131         } else {
3132             TRACE2(("gdth_interrupt() unknown controller type\n"));
3133             if (!gdth_polling)
3134                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3135             return IRQ_HANDLED;
3136         }
3137
3138         TRACE(("gdth_interrupt() index %d stat %d info %d\n",
3139                IStatus,ha->status,ha->info));
3140
3141         if (gdth_from_wait) {
3142             *pIndex = (int)IStatus;
3143         }
3144
3145         if (IStatus == ASYNCINDEX) {
3146             TRACE2(("gdth_interrupt() async. event\n"));
3147             gdth_async_event(ha);
3148             if (!gdth_polling)
3149                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3150             gdth_next(ha);
3151             return IRQ_HANDLED;
3152         } 
3153
3154         if (IStatus == SPEZINDEX) {
3155             TRACE2(("Service unknown or not initialized !\n"));
3156             ha->dvr.size = sizeof(ha->dvr.eu.driver);
3157             ha->dvr.eu.driver.ionode = ha->hanum;
3158             gdth_store_event(ha, ES_DRIVER, 4, &ha->dvr);
3159             if (!gdth_polling)
3160                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3161             return IRQ_HANDLED;
3162         }
3163         scp     = ha->cmd_tab[IStatus-2].cmnd;
3164         Service = ha->cmd_tab[IStatus-2].service;
3165         ha->cmd_tab[IStatus-2].cmnd = UNUSED_CMND;
3166         if (scp == UNUSED_CMND) {
3167             TRACE2(("gdth_interrupt() index to unused command (%d)\n",IStatus));
3168             ha->dvr.size = sizeof(ha->dvr.eu.driver);
3169             ha->dvr.eu.driver.ionode = ha->hanum;
3170             ha->dvr.eu.driver.index = IStatus;
3171             gdth_store_event(ha, ES_DRIVER, 1, &ha->dvr);
3172             if (!gdth_polling)
3173                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3174             return IRQ_HANDLED;
3175         }
3176         if (scp == INTERNAL_CMND) {
3177             TRACE(("gdth_interrupt() answer to internal command\n"));
3178             if (!gdth_polling)
3179                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3180             return IRQ_HANDLED;
3181         }
3182
3183         TRACE(("gdth_interrupt() sync. status\n"));
3184         rval = gdth_sync_event(ha,Service,IStatus,scp);
3185         if (!gdth_polling)
3186             spin_unlock_irqrestore(&ha->smp_lock, flags);
3187         if (rval == 2) {
3188             gdth_putq(ha, scp, gdth_cmnd_priv(scp)->priority);
3189         } else if (rval == 1) {
3190             gdth_scsi_done(scp);
3191         }
3192
3193 #ifdef INT_COAL
3194         if (coalesced) {
3195             /* go to the next status in the status buffer */
3196             ++pcs;
3197 #ifdef GDTH_STATISTICS
3198             ++act_int_coal;
3199             if (act_int_coal > max_int_coal) {
3200                 max_int_coal = act_int_coal;
3201                 printk("GDT: max_int_coal = %d\n",(u16)max_int_coal);
3202             }
3203 #endif      
3204             /* see if there is another status */
3205             if (pcs->status == 0)    
3206                 /* Stop the coalesce loop */
3207                 next = FALSE;
3208         }
3209     } while (next);
3210
3211     /* coalescing only for new GDT_PCIMPR controllers available */      
3212     if (ha->type == GDT_PCIMPR && coalesced) {
3213         writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
3214         writeb(0, &dp6m_ptr->i960r.sema1_reg);
3215     }
3216 #endif
3217
3218     gdth_next(ha);
3219     return IRQ_HANDLED;
3220 }
3221
3222 static irqreturn_t gdth_interrupt(int irq, void *dev_id)
3223 {
3224         gdth_ha_str *ha = dev_id;
3225
3226         return __gdth_interrupt(ha, false, NULL);
3227 }
3228
3229 static int gdth_sync_event(gdth_ha_str *ha, int service, u8 index,
3230                                                               Scsi_Cmnd *scp)
3231 {
3232     gdth_msg_str *msg;
3233     gdth_cmd_str *cmdp;
3234     u8 b, t;
3235     struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
3236
3237     cmdp = ha->pccb;
3238     TRACE(("gdth_sync_event() serv %d status %d\n",
3239            service,ha->status));
3240
3241     if (service == SCREENSERVICE) {
3242         msg  = ha->pmsg;
3243         TRACE(("len: %d, answer: %d, ext: %d, alen: %d\n",
3244                msg->msg_len,msg->msg_answer,msg->msg_ext,msg->msg_alen));
3245         if (msg->msg_len > MSGLEN+1)
3246             msg->msg_len = MSGLEN+1;
3247         if (msg->msg_len)
3248             if (!(msg->msg_answer && msg->msg_ext)) {
3249                 msg->msg_text[msg->msg_len] = '\0';
3250                 printk("%s",msg->msg_text);
3251             }
3252
3253         if (msg->msg_ext && !msg->msg_answer) {
3254             while (gdth_test_busy(ha))
3255                 gdth_delay(0);
3256             cmdp->Service       = SCREENSERVICE;
3257             cmdp->RequestBuffer = SCREEN_CMND;
3258             gdth_get_cmd_index(ha);
3259             gdth_set_sema0(ha);
3260             cmdp->OpCode        = GDT_READ;
3261             cmdp->BoardNode     = LOCALBOARD;
3262             cmdp->u.screen.reserved  = 0;
3263             cmdp->u.screen.su.msg.msg_handle= msg->msg_handle;
3264             cmdp->u.screen.su.msg.msg_addr  = ha->msg_phys;
3265             ha->cmd_offs_dpmem = 0;
3266             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.screen.su.msg.msg_addr) 
3267                 + sizeof(u64);
3268             ha->cmd_cnt = 0;
3269             gdth_copy_command(ha);
3270             gdth_release_event(ha);
3271             return 0;
3272         }
3273
3274         if (msg->msg_answer && msg->msg_alen) {
3275             /* default answers (getchar() not possible) */
3276             if (msg->msg_alen == 1) {
3277                 msg->msg_alen = 0;
3278                 msg->msg_len = 1;
3279                 msg->msg_text[0] = 0;
3280             } else {
3281                 msg->msg_alen -= 2;
3282                 msg->msg_len = 2;
3283                 msg->msg_text[0] = 1;
3284                 msg->msg_text[1] = 0;
3285             }
3286             msg->msg_ext    = 0;
3287             msg->msg_answer = 0;
3288             while (gdth_test_busy(ha))
3289                 gdth_delay(0);
3290             cmdp->Service       = SCREENSERVICE;
3291             cmdp->RequestBuffer = SCREEN_CMND;
3292             gdth_get_cmd_index(ha);
3293             gdth_set_sema0(ha);
3294             cmdp->OpCode        = GDT_WRITE;
3295             cmdp->BoardNode     = LOCALBOARD;
3296             cmdp->u.screen.reserved  = 0;
3297             cmdp->u.screen.su.msg.msg_handle= msg->msg_handle;
3298             cmdp->u.screen.su.msg.msg_addr  = ha->msg_phys;
3299             ha->cmd_offs_dpmem = 0;
3300             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.screen.su.msg.msg_addr) 
3301                 + sizeof(u64);
3302             ha->cmd_cnt = 0;
3303             gdth_copy_command(ha);
3304             gdth_release_event(ha);
3305             return 0;
3306         }
3307         printk("\n");
3308
3309     } else {
3310         b = scp->device->channel;
3311         t = scp->device->id;
3312         if (cmndinfo->OpCode == -1 && b != ha->virt_bus) {
3313             ha->raw[BUS_L2P(ha,b)].io_cnt[t]--;
3314         }
3315         /* cache or raw service */
3316         if (ha->status == S_BSY) {
3317             TRACE2(("Controller busy -> retry !\n"));
3318             if (cmndinfo->OpCode == GDT_MOUNT)
3319                 cmndinfo->OpCode = GDT_CLUST_INFO;
3320             /* retry */
3321             return 2;
3322         }
3323         if (scsi_bufflen(scp))
3324             pci_unmap_sg(ha->pdev, scsi_sglist(scp), scsi_sg_count(scp),
3325                          cmndinfo->dma_dir);
3326
3327         if (cmndinfo->sense_paddr)
3328             pci_unmap_page(ha->pdev, cmndinfo->sense_paddr, 16,
3329                                                            PCI_DMA_FROMDEVICE);
3330
3331         if (ha->status == S_OK) {
3332             cmndinfo->status = S_OK;
3333             cmndinfo->info = ha->info;
3334             if (cmndinfo->OpCode != -1) {
3335                 TRACE2(("gdth_sync_event(): special cmd 0x%x OK\n",
3336                         cmndinfo->OpCode));
3337                 /* special commands GDT_CLUST_INFO/GDT_MOUNT ? */
3338                 if (cmndinfo->OpCode == GDT_CLUST_INFO) {
3339                     ha->hdr[t].cluster_type = (u8)ha->info;
3340                     if (!(ha->hdr[t].cluster_type & 
3341                         CLUSTER_MOUNTED)) {
3342                         /* NOT MOUNTED -> MOUNT */
3343                         cmndinfo->OpCode = GDT_MOUNT;
3344                         if (ha->hdr[t].cluster_type & 
3345                             CLUSTER_RESERVED) {
3346                             /* cluster drive RESERVED (on the other node) */
3347                             cmndinfo->phase = -2;      /* reservation conflict */
3348                         }
3349                     } else {
3350                         cmndinfo->OpCode = -1;
3351                     }
3352                 } else {
3353                     if (cmndinfo->OpCode == GDT_MOUNT) {
3354                         ha->hdr[t].cluster_type |= CLUSTER_MOUNTED;
3355                         ha->hdr[t].media_changed = TRUE;
3356                     } else if (cmndinfo->OpCode == GDT_UNMOUNT) {
3357                         ha->hdr[t].cluster_type &= ~CLUSTER_MOUNTED;
3358                         ha->hdr[t].media_changed = TRUE;
3359                     } 
3360                     cmndinfo->OpCode = -1;
3361                 }
3362                 /* retry */
3363                 cmndinfo->priority = HIGH_PRI;
3364                 return 2;
3365             } else {
3366                 /* RESERVE/RELEASE ? */
3367                 if (scp->cmnd[0] == RESERVE) {
3368                     ha->hdr[t].cluster_type |= CLUSTER_RESERVED;
3369                 } else if (scp->cmnd[0] == RELEASE) {
3370                     ha->hdr[t].cluster_type &= ~CLUSTER_RESERVED;
3371                 }           
3372                 scp->result = DID_OK << 16;
3373                 scp->sense_buffer[0] = 0;
3374             }
3375         } else {
3376             cmndinfo->status = ha->status;
3377             cmndinfo->info = ha->info;
3378
3379             if (cmndinfo->OpCode != -1) {
3380                 TRACE2(("gdth_sync_event(): special cmd 0x%x error 0x%x\n",
3381                         cmndinfo->OpCode, ha->status));
3382                 if (cmndinfo->OpCode == GDT_SCAN_START ||
3383                     cmndinfo->OpCode == GDT_SCAN_END) {
3384                     cmndinfo->OpCode = -1;
3385                     /* retry */
3386                     cmndinfo->priority = HIGH_PRI;
3387                     return 2;
3388                 }
3389                 memset((char*)scp->sense_buffer,0,16);
3390                 scp->sense_buffer[0] = 0x70;
3391                 scp->sense_buffer[2] = NOT_READY;
3392                 scp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
3393             } else if (service == CACHESERVICE) {
3394                 if (ha->status == S_CACHE_UNKNOWN &&
3395                     (ha->hdr[t].cluster_type & 
3396                      CLUSTER_RESERVE_STATE) == CLUSTER_RESERVE_STATE) {
3397                     /* bus reset -> force GDT_CLUST_INFO */
3398                     ha->hdr[t].cluster_type &= ~CLUSTER_RESERVED;
3399                 }
3400                 memset((char*)scp->sense_buffer,0,16);
3401                 if (ha->status == (u16)S_CACHE_RESERV) {
3402                     scp->result = (DID_OK << 16) | (RESERVATION_CONFLICT << 1);
3403                 } else {
3404                     scp->sense_buffer[0] = 0x70;
3405                     scp->sense_buffer[2] = NOT_READY;
3406                     scp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
3407                 }
3408                 if (!cmndinfo->internal_command) {
3409                     ha->dvr.size = sizeof(ha->dvr.eu.sync);
3410                     ha->dvr.eu.sync.ionode  = ha->hanum;
3411                     ha->dvr.eu.sync.service = service;
3412                     ha->dvr.eu.sync.status  = ha->status;
3413                     ha->dvr.eu.sync.info    = ha->info;
3414                     ha->dvr.eu.sync.hostdrive = t;
3415                     if (ha->status >= 0x8000)
3416                         gdth_store_event(ha, ES_SYNC, 0, &ha->dvr);
3417                     else
3418                         gdth_store_event(ha, ES_SYNC, service, &ha->dvr);
3419                 }
3420             } else {
3421                 /* sense buffer filled from controller firmware (DMA) */
3422                 if (ha->status != S_RAW_SCSI || ha->info >= 0x100) {
3423                     scp->result = DID_BAD_TARGET << 16;
3424                 } else {
3425                     scp->result = (DID_OK << 16) | ha->info;
3426                 }
3427             }
3428         }
3429         if (!cmndinfo->wait_for_completion)
3430             cmndinfo->wait_for_completion++;
3431         else 
3432             return 1;
3433     }
3434
3435     return 0;
3436 }
3437
3438 static char *async_cache_tab[] = {
3439 /* 0*/  "\011\000\002\002\002\004\002\006\004"
3440         "GDT HA %u, service %u, async. status %u/%lu unknown",
3441 /* 1*/  "\011\000\002\002\002\004\002\006\004"
3442         "GDT HA %u, service %u, async. status %u/%lu unknown",
3443 /* 2*/  "\005\000\002\006\004"
3444         "GDT HA %u, Host Drive %lu not ready",
3445 /* 3*/  "\005\000\002\006\004"
3446         "GDT HA %u, Host Drive %lu: REASSIGN not successful and/or data error on reassigned blocks. Drive may crash in the future and should be replaced",
3447 /* 4*/  "\005\000\002\006\004"
3448         "GDT HA %u, mirror update on Host Drive %lu failed",
3449 /* 5*/  "\005\000\002\006\004"
3450         "GDT HA %u, Mirror Drive %lu failed",
3451 /* 6*/  "\005\000\002\006\004"
3452         "GDT HA %u, Mirror Drive %lu: REASSIGN not successful and/or data error on reassigned blocks. Drive may crash in the future and should be replaced",
3453 /* 7*/  "\005\000\002\006\004"
3454         "GDT HA %u, Host Drive %lu write protected",
3455 /* 8*/  "\005\000\002\006\004"
3456         "GDT HA %u, media changed in Host Drive %lu",
3457 /* 9*/  "\005\000\002\006\004"
3458         "GDT HA %u, Host Drive %lu is offline",
3459 /*10*/  "\005\000\002\006\004"
3460         "GDT HA %u, media change of Mirror Drive %lu",
3461 /*11*/  "\005\000\002\006\004"
3462         "GDT HA %u, Mirror Drive %lu is write protected",
3463 /*12*/  "\005\000\002\006\004"
3464         "GDT HA %u, general error on Host Drive %lu. Please check the devices of this drive!",
3465 /*13*/  "\007\000\002\006\002\010\002"
3466         "GDT HA %u, Array Drive %u: Cache Drive %u failed",
3467 /*14*/  "\005\000\002\006\002"
3468         "GDT HA %u, Array Drive %u: FAIL state entered",
3469 /*15*/  "\005\000\002\006\002"
3470         "GDT HA %u, Array Drive %u: error",
3471 /*16*/  "\007\000\002\006\002\010\002"
3472         "GDT HA %u, Array Drive %u: failed drive replaced by Cache Drive %u",
3473 /*17*/  "\005\000\002\006\002"
3474         "GDT HA %u, Array Drive %u: parity build failed",
3475 /*18*/  "\005\000\002\006\002"
3476         "GDT HA %u, Array Drive %u: drive rebuild failed",
3477 /*19*/  "\005\000\002\010\002"
3478         "GDT HA %u, Test of Hot Fix %u failed",
3479 /*20*/  "\005\000\002\006\002"
3480         "GDT HA %u, Array Drive %u: drive build finished successfully",
3481 /*21*/  "\005\000\002\006\002"
3482         "GDT HA %u, Array Drive %u: drive rebuild finished successfully",
3483 /*22*/  "\007\000\002\006\002\010\002"
3484         "GDT HA %u, Array Drive %u: Hot Fix %u activated",
3485 /*23*/  "\005\000\002\006\002"
3486         "GDT HA %u, Host Drive %u: processing of i/o aborted due to serious drive error",
3487 /*24*/  "\005\000\002\010\002"
3488         "GDT HA %u, mirror update on Cache Drive %u completed",
3489 /*25*/  "\005\000\002\010\002"
3490         "GDT HA %u, mirror update on Cache Drive %lu failed",
3491 /*26*/  "\005\000\002\006\002"
3492         "GDT HA %u, Array Drive %u: drive rebuild started",
3493 /*27*/  "\005\000\002\012\001"
3494         "GDT HA %u, Fault bus %u: SHELF OK detected",
3495 /*28*/  "\005\000\002\012\001"
3496         "GDT HA %u, Fault bus %u: SHELF not OK detected",
3497 /*29*/  "\007\000\002\012\001\013\001"
3498         "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug started",
3499 /*30*/  "\007\000\002\012\001\013\001"
3500         "GDT HA %u, Fault bus %u, ID %u: new disk detected",
3501 /*31*/  "\007\000\002\012\001\013\001"
3502         "GDT HA %u, Fault bus %u, ID %u: old disk detected",
3503 /*32*/  "\007\000\002\012\001\013\001"
3504         "GDT HA %u, Fault bus %u, ID %u: plugging an active disk is invalid",
3505 /*33*/  "\007\000\002\012\001\013\001"
3506         "GDT HA %u, Fault bus %u, ID %u: invalid device detected",
3507 /*34*/  "\011\000\002\012\001\013\001\006\004"
3508         "GDT HA %u, Fault bus %u, ID %u: insufficient disk capacity (%lu MB required)",
3509 /*35*/  "\007\000\002\012\001\013\001"
3510         "GDT HA %u, Fault bus %u, ID %u: disk write protected",
3511 /*36*/  "\007\000\002\012\001\013\001"
3512         "GDT HA %u, Fault bus %u, ID %u: disk not available",
3513 /*37*/  "\007\000\002\012\001\006\004"
3514         "GDT HA %u, Fault bus %u: swap detected (%lu)",
3515 /*38*/  "\007\000\002\012\001\013\001"
3516         "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug finished successfully",
3517 /*39*/  "\007\000\002\012\001\013\001"
3518         "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug aborted due to user Hot Plug",
3519 /*40*/  "\007\000\002\012\001\013\001"
3520         "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug aborted",
3521 /*41*/  "\007\000\002\012\001\013\001"
3522         "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug for Hot Fix started",
3523 /*42*/  "\005\000\002\006\002"
3524         "GDT HA %u, Array Drive %u: drive build started",
3525 /*43*/  "\003\000\002"
3526         "GDT HA %u, DRAM parity error detected",
3527 /*44*/  "\005\000\002\006\002"
3528         "GDT HA %u, Mirror Drive %u: update started",
3529 /*45*/  "\007\000\002\006\002\010\002"
3530         "GDT HA %u, Mirror Drive %u: Hot Fix %u activated",
3531 /*46*/  "\005\000\002\006\002"
3532         "GDT HA %u, Array Drive %u: no matching Pool Hot Fix Drive available",
3533 /*47*/  "\005\000\002\006\002"
3534         "GDT HA %u, Array Drive %u: Pool Hot Fix Drive available",
3535 /*48*/  "\005\000\002\006\002"
3536         "GDT HA %u, Mirror Drive %u: no matching Pool Hot Fix Drive available",
3537 /*49*/  "\005\000\002\006\002"
3538         "GDT HA %u, Mirror Drive %u: Pool Hot Fix Drive available",
3539 /*50*/  "\007\000\002\012\001\013\001"
3540         "GDT HA %u, SCSI bus %u, ID %u: IGNORE_WIDE_RESIDUE message received",
3541 /*51*/  "\005\000\002\006\002"
3542         "GDT HA %u, Array Drive %u: expand started",
3543 /*52*/  "\005\000\002\006\002"
3544         "GDT HA %u, Array Drive %u: expand finished successfully",
3545 /*53*/  "\005\000\002\006\002"
3546         "GDT HA %u, Array Drive %u: expand failed",
3547 /*54*/  "\003\000\002"
3548         "GDT HA %u, CPU temperature critical",
3549 /*55*/  "\003\000\002"
3550         "GDT HA %u, CPU temperature OK",
3551 /*56*/  "\005\000\002\006\004"
3552         "GDT HA %u, Host drive %lu created",
3553 /*57*/  "\005\000\002\006\002"
3554         "GDT HA %u, Array Drive %u: expand restarted",
3555 /*58*/  "\005\000\002\006\002"
3556         "GDT HA %u, Array Drive %u: expand stopped",
3557 /*59*/  "\005\000\002\010\002"
3558         "GDT HA %u, Mirror Drive %u: drive build quited",
3559 /*60*/  "\005\000\002\006\002"
3560         "GDT HA %u, Array Drive %u: parity build quited",
3561 /*61*/  "\005\000\002\006\002"
3562         "GDT HA %u, Array Drive %u: drive rebuild quited",
3563 /*62*/  "\005\000\002\006\002"
3564         "GDT HA %u, Array Drive %u: parity verify started",
3565 /*63*/  "\005\000\002\006\002"
3566         "GDT HA %u, Array Drive %u: parity verify done",
3567 /*64*/  "\005\000\002\006\002"
3568         "GDT HA %u, Array Drive %u: parity verify failed",
3569 /*65*/  "\005\000\002\006\002"
3570         "GDT HA %u, Array Drive %u: parity error detected",
3571 /*66*/  "\005\000\002\006\002"
3572         "GDT HA %u, Array Drive %u: parity verify quited",
3573 /*67*/  "\005\000\002\006\002"
3574         "GDT HA %u, Host Drive %u reserved",
3575 /*68*/  "\005\000\002\006\002"
3576         "GDT HA %u, Host Drive %u mounted and released",
3577 /*69*/  "\005\000\002\006\002"
3578         "GDT HA %u, Host Drive %u released",
3579 /*70*/  "\003\000\002"
3580         "GDT HA %u, DRAM error detected and corrected with ECC",
3581 /*71*/  "\003\000\002"
3582         "GDT HA %u, Uncorrectable DRAM error detected with ECC",
3583 /*72*/  "\011\000\002\012\001\013\001\014\001"
3584         "GDT HA %u, SCSI bus %u, ID %u, LUN %u: reassigning block",
3585 /*73*/  "\005\000\002\006\002"
3586         "GDT HA %u, Host drive %u resetted locally",
3587 /*74*/  "\005\000\002\006\002"
3588         "GDT HA %u, Host drive %u resetted remotely",
3589 /*75*/  "\003\000\002"
3590         "GDT HA %u, async. status 75 unknown",
3591 };
3592
3593
3594 static int gdth_async_event(gdth_ha_str *ha)
3595 {
3596     gdth_cmd_str *cmdp;
3597     int cmd_index;
3598
3599     cmdp= ha->pccb;
3600     TRACE2(("gdth_async_event() ha %d serv %d\n",
3601             ha->hanum, ha->service));
3602
3603     if (ha->service == SCREENSERVICE) {
3604         if (ha->status == MSG_REQUEST) {
3605             while (gdth_test_busy(ha))
3606                 gdth_delay(0);
3607             cmdp->Service       = SCREENSERVICE;
3608             cmdp->RequestBuffer = SCREEN_CMND;
3609             cmd_index = gdth_get_cmd_index(ha);
3610             gdth_set_sema0(ha);
3611             cmdp->OpCode        = GDT_READ;
3612             cmdp->BoardNode     = LOCALBOARD;
3613             cmdp->u.screen.reserved  = 0;
3614             cmdp->u.screen.su.msg.msg_handle= MSG_INV_HANDLE;
3615             cmdp->u.screen.su.msg.msg_addr  = ha->msg_phys;
3616             ha->cmd_offs_dpmem = 0;
3617             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.screen.su.msg.msg_addr) 
3618                 + sizeof(u64);
3619             ha->cmd_cnt = 0;
3620             gdth_copy_command(ha);
3621             if (ha->type == GDT_EISA)
3622                 printk("[EISA slot %d] ",(u16)ha->brd_phys);
3623             else if (ha->type == GDT_ISA)
3624                 printk("[DPMEM 0x%4X] ",(u16)ha->brd_phys);
3625             else 
3626                 printk("[PCI %d/%d] ",(u16)(ha->brd_phys>>8),
3627                        (u16)((ha->brd_phys>>3)&0x1f));
3628             gdth_release_event(ha);
3629         }
3630
3631     } else {
3632         if (ha->type == GDT_PCIMPR && 
3633             (ha->fw_vers & 0xff) >= 0x1a) {
3634             ha->dvr.size = 0;
3635             ha->dvr.eu.async.ionode = ha->hanum;
3636             ha->dvr.eu.async.status  = ha->status;
3637             /* severity and event_string already set! */
3638         } else {        
3639             ha->dvr.size = sizeof(ha->dvr.eu.async);
3640             ha->dvr.eu.async.ionode   = ha->hanum;
3641             ha->dvr.eu.async.service = ha->service;
3642             ha->dvr.eu.async.status  = ha->status;
3643             ha->dvr.eu.async.info    = ha->info;
3644             *(u32 *)ha->dvr.eu.async.scsi_coord  = ha->info2;
3645         }
3646         gdth_store_event( ha, ES_ASYNC, ha->service, &ha->dvr );
3647         gdth_log_event( &ha->dvr, NULL );
3648     
3649         /* new host drive from expand? */
3650         if (ha->service == CACHESERVICE && ha->status == 56) {
3651             TRACE2(("gdth_async_event(): new host drive %d created\n",
3652                     (u16)ha->info));
3653             /* gdth_analyse_hdrive(hanum, (u16)ha->info); */
3654         }   
3655     }
3656     return 1;
3657 }
3658
3659 static void gdth_log_event(gdth_evt_data *dvr, char *buffer)
3660 {
3661     gdth_stackframe stack;
3662     char *f = NULL;
3663     int i,j;
3664
3665     TRACE2(("gdth_log_event()\n"));
3666     if (dvr->size == 0) {
3667         if (buffer == NULL) {
3668             printk("Adapter %d: %s\n",dvr->eu.async.ionode,dvr->event_string); 
3669         } else {
3670             sprintf(buffer,"Adapter %d: %s\n",
3671                 dvr->eu.async.ionode,dvr->event_string); 
3672         }
3673     } else if (dvr->eu.async.service == CACHESERVICE && 
3674         INDEX_OK(dvr->eu.async.status, async_cache_tab)) {
3675         TRACE2(("GDT: Async. event cache service, event no.: %d\n",
3676                 dvr->eu.async.status));
3677         
3678         f = async_cache_tab[dvr->eu.async.status];
3679         
3680         /* i: parameter to push, j: stack element to fill */
3681         for (j=0,i=1; i < f[0]; i+=2) {
3682             switch (f[i+1]) {
3683               case 4:
3684                 stack.b[j++] = *(u32*)&dvr->eu.stream[(int)f[i]];
3685                 break;
3686               case 2:
3687                 stack.b[j++] = *(u16*)&dvr->eu.stream[(int)f[i]];
3688                 break;
3689               case 1:
3690                 stack.b[j++] = *(u8*)&dvr->eu.stream[(int)f[i]];
3691                 break;
3692               default:
3693                 break;
3694             }
3695         }
3696         
3697         if (buffer == NULL) {
3698             printk(&f[(int)f[0]],stack); 
3699             printk("\n");
3700         } else {
3701             sprintf(buffer,&f[(int)f[0]],stack); 
3702         }
3703
3704     } else {
3705         if (buffer == NULL) {
3706             printk("GDT HA %u, Unknown async. event service %d event no. %d\n",
3707                    dvr->eu.async.ionode,dvr->eu.async.service,dvr->eu.async.status);
3708         } else {
3709             sprintf(buffer,"GDT HA %u, Unknown async. event service %d event no. %d",
3710                     dvr->eu.async.ionode,dvr->eu.async.service,dvr->eu.async.status);
3711         }
3712     }
3713 }
3714
3715 #ifdef GDTH_STATISTICS
3716 static u8       gdth_timer_running;
3717
3718 static void gdth_timeout(unsigned long data)
3719 {
3720     u32 i;
3721     Scsi_Cmnd *nscp;
3722     gdth_ha_str *ha;
3723     unsigned long flags;
3724
3725     if(unlikely(list_empty(&gdth_instances))) {
3726             gdth_timer_running = 0;
3727             return;
3728     }
3729
3730     ha = list_first_entry(&gdth_instances, gdth_ha_str, list);
3731     spin_lock_irqsave(&ha->smp_lock, flags);
3732
3733     for (act_stats=0,i=0; i<GDTH_MAXCMDS; ++i) 
3734         if (ha->cmd_tab[i].cmnd != UNUSED_CMND)
3735             ++act_stats;
3736
3737     for (act_rq=0,nscp=ha->req_first; nscp; nscp=(Scsi_Cmnd*)nscp->SCp.ptr)
3738         ++act_rq;
3739
3740     TRACE2(("gdth_to(): ints %d, ios %d, act_stats %d, act_rq %d\n",
3741             act_ints, act_ios, act_stats, act_rq));
3742     act_ints = act_ios = 0;
3743
3744     gdth_timer.expires = jiffies + 30 * HZ;
3745     add_timer(&gdth_timer);
3746     spin_unlock_irqrestore(&ha->smp_lock, flags);
3747 }
3748
3749 static void gdth_timer_init(void)
3750 {
3751         if (gdth_timer_running)
3752                 return;
3753         gdth_timer_running = 1;
3754         TRACE2(("gdth_detect(): Initializing timer !\n"));
3755         gdth_timer.expires = jiffies + HZ;
3756         gdth_timer.data = 0L;
3757         gdth_timer.function = gdth_timeout;
3758         add_timer(&gdth_timer);
3759 }
3760 #else
3761 static inline void gdth_timer_init(void)
3762 {
3763 }
3764 #endif
3765
3766 static void __init internal_setup(char *str,int *ints)
3767 {
3768     int i, argc;
3769     char *cur_str, *argv;
3770
3771     TRACE2(("internal_setup() str %s ints[0] %d\n", 
3772             str ? str:"NULL", ints ? ints[0]:0));
3773
3774     /* read irq[] from ints[] */
3775     if (ints) {
3776         argc = ints[0];
3777         if (argc > 0) {
3778             if (argc > MAXHA)
3779                 argc = MAXHA;
3780             for (i = 0; i < argc; ++i)
3781                 irq[i] = ints[i+1];
3782         }
3783     }
3784
3785     /* analyse string */
3786     argv = str;
3787     while (argv && (cur_str = strchr(argv, ':'))) {
3788         int val = 0, c = *++cur_str;
3789         
3790         if (c == 'n' || c == 'N')
3791             val = 0;
3792         else if (c == 'y' || c == 'Y')
3793             val = 1;
3794         else
3795             val = (int)simple_strtoul(cur_str, NULL, 0);
3796
3797         if (!strncmp(argv, "disable:", 8))
3798             disable = val;
3799         else if (!strncmp(argv, "reserve_mode:", 13))
3800             reserve_mode = val;
3801         else if (!strncmp(argv, "reverse_scan:", 13))
3802             reverse_scan = val;
3803         else if (!strncmp(argv, "hdr_channel:", 12))
3804             hdr_channel = val;
3805         else if (!strncmp(argv, "max_ids:", 8))
3806             max_ids = val;
3807         else if (!strncmp(argv, "rescan:", 7))
3808             rescan = val;
3809         else if (!strncmp(argv, "shared_access:", 14))
3810             shared_access = val;
3811         else if (!strncmp(argv, "probe_eisa_isa:", 15))
3812             probe_eisa_isa = val;
3813         else if (!strncmp(argv, "reserve_list:", 13)) {
3814             reserve_list[0] = val;
3815             for (i = 1; i < MAX_RES_ARGS; i++) {
3816                 cur_str = strchr(cur_str, ',');
3817                 if (!cur_str)
3818                     break;
3819                 if (!isdigit((int)*++cur_str)) {
3820                     --cur_str;          
3821                     break;
3822                 }
3823                 reserve_list[i] = 
3824                     (int)simple_strtoul(cur_str, NULL, 0);
3825             }
3826             if (!cur_str)
3827                 break;
3828             argv = ++cur_str;
3829             continue;
3830         }
3831
3832         if ((argv = strchr(argv, ',')))
3833             ++argv;
3834     }
3835 }
3836
3837 int __init option_setup(char *str)
3838 {
3839     int ints[MAXHA];
3840     char *cur = str;
3841     int i = 1;
3842
3843     TRACE2(("option_setup() str %s\n", str ? str:"NULL")); 
3844
3845     while (cur && isdigit(*cur) && i < MAXHA) {
3846         ints[i++] = simple_strtoul(cur, NULL, 0);
3847         if ((cur = strchr(cur, ',')) != NULL) cur++;
3848     }
3849
3850     ints[0] = i - 1;
3851     internal_setup(cur, ints);
3852     return 1;
3853 }
3854
3855 static const char *gdth_ctr_name(gdth_ha_str *ha)
3856 {
3857     TRACE2(("gdth_ctr_name()\n"));
3858
3859     if (ha->type == GDT_EISA) {
3860         switch (ha->stype) {
3861           case GDT3_ID:
3862             return("GDT3000/3020");
3863           case GDT3A_ID:
3864             return("GDT3000A/3020A/3050A");
3865           case GDT3B_ID:
3866             return("GDT3000B/3010A");
3867         }
3868     } else if (ha->type == GDT_ISA) {
3869         return("GDT2000/2020");
3870     } else if (ha->type == GDT_PCI) {
3871         switch (ha->pdev->device) {
3872           case PCI_DEVICE_ID_VORTEX_GDT60x0:
3873             return("GDT6000/6020/6050");
3874           case PCI_DEVICE_ID_VORTEX_GDT6000B:
3875             return("GDT6000B/6010");
3876         }
3877     } 
3878     /* new controllers (GDT_PCINEW, GDT_PCIMPR, ..) use board_info IOCTL! */
3879
3880     return("");
3881 }
3882
3883 static const char *gdth_info(struct Scsi_Host *shp)
3884 {
3885     gdth_ha_str *ha = shost_priv(shp);
3886
3887     TRACE2(("gdth_info()\n"));
3888     return ((const char *)ha->binfo.type_string);
3889 }
3890
3891 static enum blk_eh_timer_return gdth_timed_out(struct scsi_cmnd *scp)
3892 {
3893         gdth_ha_str *ha = shost_priv(scp->device->host);
3894         struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
3895         u8 b, t;
3896         unsigned long flags;
3897         enum blk_eh_timer_return retval = BLK_EH_NOT_HANDLED;
3898
3899         TRACE(("%s() cmd 0x%x\n", scp->cmnd[0], __func__));
3900         b = scp->device->channel;
3901         t = scp->device->id;
3902
3903         /*
3904          * We don't really honor the command timeout, but we try to
3905          * honor 6 times of the actual command timeout! So reset the
3906          * timer if this is less than 6th timeout on this command!
3907          */
3908         if (++cmndinfo->timeout_count < 6)
3909                 retval = BLK_EH_RESET_TIMER;
3910
3911         /* Reset the timeout if it is locked IO */
3912         spin_lock_irqsave(&ha->smp_lock, flags);
3913         if ((b != ha->virt_bus && ha->raw[BUS_L2P(ha, b)].lock) ||
3914             (b == ha->virt_bus && t < MAX_HDRIVES && ha->hdr[t].lock)) {
3915                 TRACE2(("%s(): locked IO, reset timeout\n", __func__));
3916                 retval = BLK_EH_RESET_TIMER;
3917         }
3918         spin_unlock_irqrestore(&ha->smp_lock, flags);
3919
3920         return retval;
3921 }
3922
3923
3924 static int gdth_eh_bus_reset(Scsi_Cmnd *scp)
3925 {
3926     gdth_ha_str *ha = shost_priv(scp->device->host);
3927     int i;
3928     unsigned long flags;
3929     Scsi_Cmnd *cmnd;
3930     u8 b;
3931
3932     TRACE2(("gdth_eh_bus_reset()\n"));
3933
3934     b = scp->device->channel;
3935
3936     /* clear command tab */
3937     spin_lock_irqsave(&ha->smp_lock, flags);
3938     for (i = 0; i < GDTH_MAXCMDS; ++i) {
3939         cmnd = ha->cmd_tab[i].cmnd;
3940         if (!SPECIAL_SCP(cmnd) && cmnd->device->channel == b)
3941             ha->cmd_tab[i].cmnd = UNUSED_CMND;
3942     }
3943     spin_unlock_irqrestore(&ha->smp_lock, flags);
3944
3945     if (b == ha->virt_bus) {
3946         /* host drives */
3947         for (i = 0; i < MAX_HDRIVES; ++i) {
3948             if (ha->hdr[i].present) {
3949                 spin_lock_irqsave(&ha->smp_lock, flags);
3950                 gdth_polling = TRUE;
3951                 while (gdth_test_busy(ha))
3952                     gdth_delay(0);
3953                 if (gdth_internal_cmd(ha, CACHESERVICE,
3954                                       GDT_CLUST_RESET, i, 0, 0))
3955                     ha->hdr[i].cluster_type &= ~CLUSTER_RESERVED;
3956                 gdth_polling = FALSE;
3957                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3958             }
3959         }
3960     } else {
3961         /* raw devices */
3962         spin_lock_irqsave(&ha->smp_lock, flags);
3963         for (i = 0; i < MAXID; ++i)
3964             ha->raw[BUS_L2P(ha,b)].io_cnt[i] = 0;
3965         gdth_polling = TRUE;
3966         while (gdth_test_busy(ha))
3967             gdth_delay(0);
3968         gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_RESET_BUS,
3969                           BUS_L2P(ha,b), 0, 0);
3970         gdth_polling = FALSE;
3971         spin_unlock_irqrestore(&ha->smp_lock, flags);
3972     }
3973     return SUCCESS;
3974 }
3975
3976 static int gdth_bios_param(struct scsi_device *sdev,struct block_device *bdev,sector_t cap,int *ip)
3977 {
3978     u8 b, t;
3979     gdth_ha_str *ha = shost_priv(sdev->host);
3980     struct scsi_device *sd;
3981     unsigned capacity;
3982
3983     sd = sdev;
3984     capacity = cap;
3985     b = sd->channel;
3986     t = sd->id;
3987     TRACE2(("gdth_bios_param() ha %d bus %d target %d\n", ha->hanum, b, t));
3988
3989     if (b != ha->virt_bus || ha->hdr[t].heads == 0) {
3990         /* raw device or host drive without mapping information */
3991         TRACE2(("Evaluate mapping\n"));
3992         gdth_eval_mapping(capacity,&ip[2],&ip[0],&ip[1]);
3993     } else {
3994         ip[0] = ha->hdr[t].heads;
3995         ip[1] = ha->hdr[t].secs;
3996         ip[2] = capacity / ip[0] / ip[1];
3997     }
3998
3999     TRACE2(("gdth_bios_param(): %d heads, %d secs, %d cyls\n",
4000             ip[0],ip[1],ip[2]));
4001     return 0;
4002 }
4003
4004
4005 static int gdth_queuecommand(struct scsi_cmnd *scp,
4006                                 void (*done)(struct scsi_cmnd *))
4007 {
4008     gdth_ha_str *ha = shost_priv(scp->device->host);
4009     struct gdth_cmndinfo *cmndinfo;
4010
4011     TRACE(("gdth_queuecommand() cmd 0x%x\n", scp->cmnd[0]));
4012
4013     cmndinfo = gdth_get_cmndinfo(ha);
4014     BUG_ON(!cmndinfo);
4015
4016     scp->scsi_done = done;
4017     cmndinfo->timeout_count = 0;
4018     cmndinfo->priority = DEFAULT_PRI;
4019
4020     return __gdth_queuecommand(ha, scp, cmndinfo);
4021 }
4022
4023 static int __gdth_queuecommand(gdth_ha_str *ha, struct scsi_cmnd *scp,
4024                                 struct gdth_cmndinfo *cmndinfo)
4025 {
4026     scp->host_scribble = (unsigned char *)cmndinfo;
4027     cmndinfo->wait_for_completion = 1;
4028     cmndinfo->phase = -1;
4029     cmndinfo->OpCode = -1;
4030
4031 #ifdef GDTH_STATISTICS
4032     ++act_ios;
4033 #endif
4034
4035     gdth_putq(ha, scp, cmndinfo->priority);
4036     gdth_next(ha);
4037     return 0;
4038 }
4039
4040
4041 static int gdth_open(struct inode *inode, struct file *filep)
4042 {
4043     gdth_ha_str *ha;
4044
4045     lock_kernel();
4046     list_for_each_entry(ha, &gdth_instances, list) {
4047         if (!ha->sdev)
4048             ha->sdev = scsi_get_host_dev(ha->shost);
4049     }
4050     unlock_kernel();
4051
4052     TRACE(("gdth_open()\n"));
4053     return 0;
4054 }
4055
4056 static int gdth_close(struct inode *inode, struct file *filep)
4057 {
4058     TRACE(("gdth_close()\n"));
4059     return 0;
4060 }
4061
4062 static int ioc_event(void __user *arg)
4063 {
4064     gdth_ioctl_event evt;
4065     gdth_ha_str *ha;
4066     unsigned long flags;
4067
4068     if (copy_from_user(&evt, arg, sizeof(gdth_ioctl_event)))
4069         return -EFAULT;
4070     ha = gdth_find_ha(evt.ionode);
4071     if (!ha)
4072         return -EFAULT;
4073
4074     if (evt.erase == 0xff) {
4075         if (evt.event.event_source == ES_TEST)
4076             evt.event.event_data.size=sizeof(evt.event.event_data.eu.test); 
4077         else if (evt.event.event_source == ES_DRIVER)
4078             evt.event.event_data.size=sizeof(evt.event.event_data.eu.driver); 
4079         else if (evt.event.event_source == ES_SYNC)
4080             evt.event.event_data.size=sizeof(evt.event.event_data.eu.sync); 
4081         else
4082             evt.event.event_data.size=sizeof(evt.event.event_data.eu.async);
4083         spin_lock_irqsave(&ha->smp_lock, flags);
4084         gdth_store_event(ha, evt.event.event_source, evt.event.event_idx,
4085                          &evt.event.event_data);
4086         spin_unlock_irqrestore(&ha->smp_lock, flags);
4087     } else if (evt.erase == 0xfe) {
4088         gdth_clear_events();
4089     } else if (evt.erase == 0) {
4090         evt.handle = gdth_read_event(ha, evt.handle, &evt.event);
4091     } else {
4092         gdth_readapp_event(ha, evt.erase, &evt.event);
4093     }     
4094     if (copy_to_user(arg, &evt, sizeof(gdth_ioctl_event)))
4095         return -EFAULT;
4096     return 0;
4097 }
4098
4099 static int ioc_lockdrv(void __user *arg)
4100 {
4101     gdth_ioctl_lockdrv ldrv;
4102     u8 i, j;
4103     unsigned long flags;
4104     gdth_ha_str *ha;
4105
4106     if (copy_from_user(&ldrv, arg, sizeof(gdth_ioctl_lockdrv)))
4107         return -EFAULT;
4108     ha = gdth_find_ha(ldrv.ionode);
4109     if (!ha)
4110         return -EFAULT;
4111
4112     for (i = 0; i < ldrv.drive_cnt && i < MAX_HDRIVES; ++i) {
4113         j = ldrv.drives[i];
4114         if (j >= MAX_HDRIVES || !ha->hdr[j].present)
4115             continue;
4116         if (ldrv.lock) {
4117             spin_lock_irqsave(&ha->smp_lock, flags);
4118             ha->hdr[j].lock = 1;
4119             spin_unlock_irqrestore(&ha->smp_lock, flags);
4120             gdth_wait_completion(ha, ha->bus_cnt, j);
4121         } else {
4122             spin_lock_irqsave(&ha->smp_lock, flags);
4123             ha->hdr[j].lock = 0;
4124             spin_unlock_irqrestore(&ha->smp_lock, flags);
4125             gdth_next(ha);
4126         }
4127     } 
4128     return 0;
4129 }
4130
4131 static int ioc_resetdrv(void __user *arg, char *cmnd)
4132 {
4133     gdth_ioctl_reset res;
4134     gdth_cmd_str cmd;
4135     gdth_ha_str *ha;
4136     int rval;
4137
4138     if (copy_from_user(&res, arg, sizeof(gdth_ioctl_reset)) ||
4139         res.number >= MAX_HDRIVES)
4140         return -EFAULT;
4141     ha = gdth_find_ha(res.ionode);
4142     if (!ha)
4143         return -EFAULT;
4144
4145     if (!ha->hdr[res.number].present)
4146         return 0;
4147     memset(&cmd, 0, sizeof(gdth_cmd_str));
4148     cmd.Service = CACHESERVICE;
4149     cmd.OpCode = GDT_CLUST_RESET;
4150     if (ha->cache_feat & GDT_64BIT)
4151         cmd.u.cache64.DeviceNo = res.number;
4152     else
4153         cmd.u.cache.DeviceNo = res.number;
4154
4155     rval = __gdth_execute(ha->sdev, &cmd, cmnd, 30, NULL);
4156     if (rval < 0)
4157         return rval;
4158     res.status = rval;
4159
4160     if (copy_to_user(arg, &res, sizeof(gdth_ioctl_reset)))
4161         return -EFAULT;
4162     return 0;
4163 }
4164
4165 static int ioc_general(void __user *arg, char *cmnd)
4166 {
4167     gdth_ioctl_general gen;
4168     char *buf = NULL;
4169     u64 paddr; 
4170     gdth_ha_str *ha;
4171     int rval;
4172
4173     if (copy_from_user(&gen, arg, sizeof(gdth_ioctl_general)))
4174         return -EFAULT;
4175     ha = gdth_find_ha(gen.ionode);
4176     if (!ha)
4177         return -EFAULT;
4178     if (gen.data_len + gen.sense_len != 0) {
4179         if (!(buf = gdth_ioctl_alloc(ha, gen.data_len + gen.sense_len,
4180                                      FALSE, &paddr)))
4181             return -EFAULT;
4182         if (copy_from_user(buf, arg + sizeof(gdth_ioctl_general),  
4183                            gen.data_len + gen.sense_len)) {
4184             gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
4185             return -EFAULT;
4186         }
4187
4188         if (gen.command.OpCode == GDT_IOCTL) {
4189             gen.command.u.ioctl.p_param = paddr;
4190         } else if (gen.command.Service == CACHESERVICE) {
4191             if (ha->cache_feat & GDT_64BIT) {
4192                 /* copy elements from 32-bit IOCTL structure */
4193                 gen.command.u.cache64.BlockCnt = gen.command.u.cache.BlockCnt;
4194                 gen.command.u.cache64.BlockNo = gen.command.u.cache.BlockNo;
4195                 gen.command.u.cache64.DeviceNo = gen.command.u.cache.DeviceNo;
4196                 /* addresses */
4197                 if (ha->cache_feat & SCATTER_GATHER) {
4198                     gen.command.u.cache64.DestAddr = (u64)-1;
4199                     gen.command.u.cache64.sg_canz = 1;
4200                     gen.command.u.cache64.sg_lst[0].sg_ptr = paddr;
4201                     gen.command.u.cache64.sg_lst[0].sg_len = gen.data_len;
4202                     gen.command.u.cache64.sg_lst[1].sg_len = 0;
4203                 } else {
4204                     gen.command.u.cache64.DestAddr = paddr;
4205                     gen.command.u.cache64.sg_canz = 0;
4206                 }
4207             } else {
4208                 if (ha->cache_feat & SCATTER_GATHER) {
4209                     gen.command.u.cache.DestAddr = 0xffffffff;
4210                     gen.command.u.cache.sg_canz = 1;
4211                     gen.command.u.cache.sg_lst[0].sg_ptr = (u32)paddr;
4212                     gen.command.u.cache.sg_lst[0].sg_len = gen.data_len;
4213                     gen.command.u.cache.sg_lst[1].sg_len = 0;
4214                 } else {
4215                     gen.command.u.cache.DestAddr = paddr;
4216                     gen.command.u.cache.sg_canz = 0;
4217                 }
4218             }
4219         } else if (gen.command.Service == SCSIRAWSERVICE) {
4220             if (ha->raw_feat & GDT_64BIT) {
4221                 /* copy elements from 32-bit IOCTL structure */
4222                 char cmd[16];
4223                 gen.command.u.raw64.sense_len = gen.command.u.raw.sense_len;
4224                 gen.command.u.raw64.bus = gen.command.u.raw.bus;
4225                 gen.command.u.raw64.lun = gen.command.u.raw.lun;
4226                 gen.command.u.raw64.target = gen.command.u.raw.target;
4227                 memcpy(cmd, gen.command.u.raw.cmd, 16);
4228                 memcpy(gen.command.u.raw64.cmd, cmd, 16);
4229                 gen.command.u.raw64.clen = gen.command.u.raw.clen;
4230                 gen.command.u.raw64.sdlen = gen.command.u.raw.sdlen;
4231                 gen.command.u.raw64.direction = gen.command.u.raw.direction;
4232                 /* addresses */
4233                 if (ha->raw_feat & SCATTER_GATHER) {
4234                     gen.command.u.raw64.sdata = (u64)-1;
4235                     gen.command.u.raw64.sg_ranz = 1;
4236                     gen.command.u.raw64.sg_lst[0].sg_ptr = paddr;
4237                     gen.command.u.raw64.sg_lst[0].sg_len = gen.data_len;
4238                     gen.command.u.raw64.sg_lst[1].sg_len = 0;
4239                 } else {
4240                     gen.command.u.raw64.sdata = paddr;
4241                     gen.command.u.raw64.sg_ranz = 0;
4242                 }
4243                 gen.command.u.raw64.sense_data = paddr + gen.data_len;
4244             } else {
4245                 if (ha->raw_feat & SCATTER_GATHER) {
4246                     gen.command.u.raw.sdata = 0xffffffff;
4247                     gen.command.u.raw.sg_ranz = 1;
4248                     gen.command.u.raw.sg_lst[0].sg_ptr = (u32)paddr;
4249                     gen.command.u.raw.sg_lst[0].sg_len = gen.data_len;
4250                     gen.command.u.raw.sg_lst[1].sg_len = 0;
4251                 } else {
4252                     gen.command.u.raw.sdata = paddr;
4253                     gen.command.u.raw.sg_ranz = 0;
4254                 }
4255                 gen.command.u.raw.sense_data = (u32)paddr + gen.data_len;
4256             }
4257         } else {
4258             gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
4259             return -EFAULT;
4260         }
4261     }
4262
4263     rval = __gdth_execute(ha->sdev, &gen.command, cmnd, gen.timeout, &gen.info);
4264     if (rval < 0)
4265         return rval;
4266     gen.status = rval;
4267
4268     if (copy_to_user(arg + sizeof(gdth_ioctl_general), buf, 
4269                      gen.data_len + gen.sense_len)) {
4270         gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
4271         return -EFAULT; 
4272     } 
4273     if (copy_to_user(arg, &gen, 
4274         sizeof(gdth_ioctl_general) - sizeof(gdth_cmd_str))) {
4275         gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
4276         return -EFAULT;
4277     }
4278     gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
4279     return 0;
4280 }
4281  
4282 static int ioc_hdrlist(void __user *arg, char *cmnd)
4283 {
4284     gdth_ioctl_rescan *rsc;
4285     gdth_cmd_str *cmd;
4286     gdth_ha_str *ha;
4287     u8 i;
4288     int rc = -ENOMEM;
4289     u32 cluster_type = 0;
4290
4291     rsc = kmalloc(sizeof(*rsc), GFP_KERNEL);
4292     cmd = kmalloc(sizeof(*cmd), GFP_KERNEL);
4293     if (!rsc || !cmd)
4294         goto free_fail;
4295
4296     if (copy_from_user(rsc, arg, sizeof(gdth_ioctl_rescan)) ||
4297         (NULL == (ha = gdth_find_ha(rsc->ionode)))) {
4298         rc = -EFAULT;
4299         goto free_fail;
4300     }
4301     memset(cmd, 0, sizeof(gdth_cmd_str));
4302    
4303     for (i = 0; i < MAX_HDRIVES; ++i) { 
4304         if (!ha->hdr[i].present) {
4305             rsc->hdr_list[i].bus = 0xff; 
4306             continue;
4307         } 
4308         rsc->hdr_list[i].bus = ha->virt_bus;
4309         rsc->hdr_list[i].target = i;
4310         rsc->hdr_list[i].lun = 0;
4311         rsc->hdr_list[i].cluster_type = ha->hdr[i].cluster_type;
4312         if (ha->hdr[i].cluster_type & CLUSTER_DRIVE) { 
4313             cmd->Service = CACHESERVICE;
4314             cmd->OpCode = GDT_CLUST_INFO;
4315             if (ha->cache_feat & GDT_64BIT)
4316                 cmd->u.cache64.DeviceNo = i;
4317             else
4318                 cmd->u.cache.DeviceNo = i;
4319             if (__gdth_execute(ha->sdev, cmd, cmnd, 30, &cluster_type) == S_OK)
4320                 rsc->hdr_list[i].cluster_type = cluster_type;
4321         }
4322     } 
4323
4324     if (copy_to_user(arg, rsc, sizeof(gdth_ioctl_rescan)))
4325         rc = -EFAULT;
4326     else
4327         rc = 0;
4328
4329 free_fail:
4330     kfree(rsc);
4331     kfree(cmd);
4332     return rc;
4333 }
4334
4335 static int ioc_rescan(void __user *arg, char *cmnd)
4336 {
4337     gdth_ioctl_rescan *rsc;
4338     gdth_cmd_str *cmd;
4339     u16 i, status, hdr_cnt;
4340     u32 info;
4341     int cyls, hds, secs;
4342     int rc = -ENOMEM;
4343     unsigned long flags;
4344     gdth_ha_str *ha; 
4345
4346     rsc = kmalloc(sizeof(*rsc), GFP_KERNEL);
4347     cmd = kmalloc(sizeof(*cmd), GFP_KERNEL);
4348     if (!cmd || !rsc)
4349         goto free_fail;
4350
4351     if (copy_from_user(rsc, arg, sizeof(gdth_ioctl_rescan)) ||
4352         (NULL == (ha = gdth_find_ha(rsc->ionode)))) {
4353         rc = -EFAULT;
4354         goto free_fail;
4355     }
4356     memset(cmd, 0, sizeof(gdth_cmd_str));
4357
4358     if (rsc->flag == 0) {
4359         /* old method: re-init. cache service */
4360         cmd->Service = CACHESERVICE;
4361         if (ha->cache_feat & GDT_64BIT) {
4362             cmd->OpCode = GDT_X_INIT_HOST;
4363             cmd->u.cache64.DeviceNo = LINUX_OS;
4364         } else {
4365             cmd->OpCode = GDT_INIT;
4366             cmd->u.cache.DeviceNo = LINUX_OS;
4367         }
4368
4369         status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
4370         i = 0;
4371         hdr_cnt = (status == S_OK ? (u16)info : 0);
4372     } else {
4373         i = rsc->hdr_no;
4374         hdr_cnt = i + 1;
4375     }
4376
4377     for (; i < hdr_cnt && i < MAX_HDRIVES; ++i) {
4378         cmd->Service = CACHESERVICE;
4379         cmd->OpCode = GDT_INFO;
4380         if (ha->cache_feat & GDT_64BIT) 
4381             cmd->u.cache64.DeviceNo = i;
4382         else 
4383             cmd->u.cache.DeviceNo = i;
4384
4385         status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
4386
4387         spin_lock_irqsave(&ha->smp_lock, flags);
4388         rsc->hdr_list[i].bus = ha->virt_bus;
4389         rsc->hdr_list[i].target = i;
4390         rsc->hdr_list[i].lun = 0;
4391         if (status != S_OK) {
4392             ha->hdr[i].present = FALSE;
4393         } else {
4394             ha->hdr[i].present = TRUE;
4395             ha->hdr[i].size = info;
4396             /* evaluate mapping */
4397             ha->hdr[i].size &= ~SECS32;
4398             gdth_eval_mapping(ha->hdr[i].size,&cyls,&hds,&secs); 
4399             ha->hdr[i].heads = hds;
4400             ha->hdr[i].secs = secs;
4401             /* round size */
4402             ha->hdr[i].size = cyls * hds * secs;
4403         }
4404         spin_unlock_irqrestore(&ha->smp_lock, flags);
4405         if (status != S_OK)
4406             continue; 
4407         
4408         /* extended info, if GDT_64BIT, for drives > 2 TB */
4409         /* but we need ha->info2, not yet stored in scp->SCp */
4410
4411         /* devtype, cluster info, R/W attribs */
4412         cmd->Service = CACHESERVICE;
4413         cmd->OpCode = GDT_DEVTYPE;
4414         if (ha->cache_feat & GDT_64BIT) 
4415             cmd->u.cache64.DeviceNo = i;
4416         else
4417             cmd->u.cache.DeviceNo = i;
4418
4419         status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
4420
4421         spin_lock_irqsave(&ha->smp_lock, flags);
4422         ha->hdr[i].devtype = (status == S_OK ? (u16)info : 0);
4423         spin_unlock_irqrestore(&ha->smp_lock, flags);
4424
4425         cmd->Service = CACHESERVICE;
4426         cmd->OpCode = GDT_CLUST_INFO;
4427         if (ha->cache_feat & GDT_64BIT) 
4428             cmd->u.cache64.DeviceNo = i;
4429         else
4430             cmd->u.cache.DeviceNo = i;
4431
4432         status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
4433
4434         spin_lock_irqsave(&ha->smp_lock, flags);
4435         ha->hdr[i].cluster_type = 
4436             ((status == S_OK && !shared_access) ? (u16)info : 0);
4437         spin_unlock_irqrestore(&ha->smp_lock, flags);
4438         rsc->hdr_list[i].cluster_type = ha->hdr[i].cluster_type;
4439
4440         cmd->Service = CACHESERVICE;
4441         cmd->OpCode = GDT_RW_ATTRIBS;
4442         if (ha->cache_feat & GDT_64BIT) 
4443             cmd->u.cache64.DeviceNo = i;
4444         else
4445             cmd->u.cache.DeviceNo = i;
4446
4447         status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
4448
4449         spin_lock_irqsave(&ha->smp_lock, flags);
4450         ha->hdr[i].rw_attribs = (status == S_OK ? (u16)info : 0);
4451         spin_unlock_irqrestore(&ha->smp_lock, flags);
4452     }
4453  
4454     if (copy_to_user(arg, rsc, sizeof(gdth_ioctl_rescan)))
4455         rc = -EFAULT;
4456     else
4457         rc = 0;
4458
4459 free_fail:
4460     kfree(rsc);
4461     kfree(cmd);
4462     return rc;
4463 }
4464   
4465 static int gdth_ioctl(struct inode *inode, struct file *filep,
4466                       unsigned int cmd, unsigned long arg)
4467 {
4468     gdth_ha_str *ha; 
4469     Scsi_Cmnd *scp;
4470     unsigned long flags;
4471     char cmnd[MAX_COMMAND_SIZE];   
4472     void __user *argp = (void __user *)arg;
4473
4474     memset(cmnd, 0xff, 12);
4475     
4476     TRACE(("gdth_ioctl() cmd 0x%x\n", cmd));
4477  
4478     switch (cmd) {
4479       case GDTIOCTL_CTRCNT:
4480       { 
4481         int cnt = gdth_ctr_count;
4482         if (put_user(cnt, (int __user *)argp))
4483                 return -EFAULT;
4484         break;
4485       }
4486
4487       case GDTIOCTL_DRVERS:
4488       { 
4489         int ver = (GDTH_VERSION<<8) | GDTH_SUBVERSION;
4490         if (put_user(ver, (int __user *)argp))
4491                 return -EFAULT;
4492         break;
4493       }
4494       
4495       case GDTIOCTL_OSVERS:
4496       { 
4497         gdth_ioctl_osvers osv; 
4498
4499         osv.version = (u8)(LINUX_VERSION_CODE >> 16);
4500         osv.subversion = (u8)(LINUX_VERSION_CODE >> 8);
4501         osv.revision = (u16)(LINUX_VERSION_CODE & 0xff);
4502         if (copy_to_user(argp, &osv, sizeof(gdth_ioctl_osvers)))
4503                 return -EFAULT;
4504         break;
4505       }
4506
4507       case GDTIOCTL_CTRTYPE:
4508       { 
4509         gdth_ioctl_ctrtype ctrt;
4510         
4511         if (copy_from_user(&ctrt, argp, sizeof(gdth_ioctl_ctrtype)) ||
4512             (NULL == (ha = gdth_find_ha(ctrt.ionode))))
4513             return -EFAULT;
4514
4515         if (ha->type == GDT_ISA || ha->type == GDT_EISA) {
4516             ctrt.type = (u8)((ha->stype>>20) - 0x10);
4517         } else {
4518             if (ha->type != GDT_PCIMPR) {
4519                 ctrt.type = (u8)((ha->stype<<4) + 6);
4520             } else {
4521                 ctrt.type = 
4522                     (ha->oem_id == OEM_ID_INTEL ? 0xfd : 0xfe);
4523                 if (ha->stype >= 0x300)
4524                     ctrt.ext_type = 0x6000 | ha->pdev->subsystem_device;
4525                 else 
4526                     ctrt.ext_type = 0x6000 | ha->stype;
4527             }
4528             ctrt.device_id = ha->pdev->device;
4529             ctrt.sub_device_id = ha->pdev->subsystem_device;
4530         }
4531         ctrt.info = ha->brd_phys;
4532         ctrt.oem_id = ha->oem_id;
4533         if (copy_to_user(argp, &ctrt, sizeof(gdth_ioctl_ctrtype)))
4534             return -EFAULT;
4535         break;
4536       }
4537         
4538       case GDTIOCTL_GENERAL:
4539         return ioc_general(argp, cmnd);
4540
4541       case GDTIOCTL_EVENT:
4542         return ioc_event(argp);
4543
4544       case GDTIOCTL_LOCKDRV:
4545         return ioc_lockdrv(argp);
4546
4547       case GDTIOCTL_LOCKCHN:
4548       {
4549         gdth_ioctl_lockchn lchn;
4550         u8 i, j;
4551
4552         if (copy_from_user(&lchn, argp, sizeof(gdth_ioctl_lockchn)) ||
4553             (NULL == (ha = gdth_find_ha(lchn.ionode))))
4554             return -EFAULT;
4555
4556         i = lchn.channel;
4557         if (i < ha->bus_cnt) {
4558             if (lchn.lock) {
4559                 spin_lock_irqsave(&ha->smp_lock, flags);
4560                 ha->raw[i].lock = 1;
4561                 spin_unlock_irqrestore(&ha->smp_lock, flags);
4562                 for (j = 0; j < ha->tid_cnt; ++j)
4563                     gdth_wait_completion(ha, i, j);
4564             } else {
4565                 spin_lock_irqsave(&ha->smp_lock, flags);
4566                 ha->raw[i].lock = 0;
4567                 spin_unlock_irqrestore(&ha->smp_lock, flags);
4568                 for (j = 0; j < ha->tid_cnt; ++j)
4569                     gdth_next(ha);
4570             }
4571         } 
4572         break;
4573       }
4574
4575       case GDTIOCTL_RESCAN:
4576         return ioc_rescan(argp, cmnd);
4577
4578       case GDTIOCTL_HDRLIST:
4579         return ioc_hdrlist(argp, cmnd);
4580
4581       case GDTIOCTL_RESET_BUS:
4582       {
4583         gdth_ioctl_reset res;
4584         int rval;
4585
4586         if (copy_from_user(&res, argp, sizeof(gdth_ioctl_reset)) ||
4587             (NULL == (ha = gdth_find_ha(res.ionode))))
4588             return -EFAULT;
4589
4590         scp  = kzalloc(sizeof(*scp), GFP_KERNEL);
4591         if (!scp)
4592             return -ENOMEM;
4593         scp->device = ha->sdev;
4594         scp->cmd_len = 12;
4595         scp->device->channel = res.number;
4596         rval = gdth_eh_bus_reset(scp);
4597         res.status = (rval == SUCCESS ? S_OK : S_GENERR);
4598         kfree(scp);
4599
4600         if (copy_to_user(argp, &res, sizeof(gdth_ioctl_reset)))
4601             return -EFAULT;
4602         break;
4603       }
4604
4605       case GDTIOCTL_RESET_DRV:
4606         return ioc_resetdrv(argp, cmnd);
4607
4608       default:
4609         break; 
4610     }
4611     return 0;
4612 }
4613
4614
4615 /* flush routine */
4616 static void gdth_flush(gdth_ha_str *ha)
4617 {
4618     int             i;
4619     gdth_cmd_str    gdtcmd;
4620     char            cmnd[MAX_COMMAND_SIZE];   
4621     memset(cmnd, 0xff, MAX_COMMAND_SIZE);
4622
4623     TRACE2(("gdth_flush() hanum %d\n", ha->hanum));
4624
4625     for (i = 0; i < MAX_HDRIVES; ++i) {
4626         if (ha->hdr[i].present) {
4627             gdtcmd.BoardNode = LOCALBOARD;
4628             gdtcmd.Service = CACHESERVICE;
4629             gdtcmd.OpCode = GDT_FLUSH;
4630             if (ha->cache_feat & GDT_64BIT) { 
4631                 gdtcmd.u.cache64.DeviceNo = i;
4632                 gdtcmd.u.cache64.BlockNo = 1;
4633                 gdtcmd.u.cache64.sg_canz = 0;
4634             } else {
4635                 gdtcmd.u.cache.DeviceNo = i;
4636                 gdtcmd.u.cache.BlockNo = 1;
4637                 gdtcmd.u.cache.sg_canz = 0;
4638             }
4639             TRACE2(("gdth_flush(): flush ha %d drive %d\n", ha->hanum, i));
4640
4641             gdth_execute(ha->shost, &gdtcmd, cmnd, 30, NULL);
4642         }
4643     }
4644 }
4645
4646 /* configure lun */
4647 static int gdth_slave_configure(struct scsi_device *sdev)
4648 {
4649     scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
4650     sdev->skip_ms_page_3f = 1;
4651     sdev->skip_ms_page_8 = 1;
4652     return 0;
4653 }
4654
4655 static struct scsi_host_template gdth_template = {
4656         .name                   = "GDT SCSI Disk Array Controller",
4657         .info                   = gdth_info, 
4658         .queuecommand           = gdth_queuecommand,
4659         .eh_bus_reset_handler   = gdth_eh_bus_reset,
4660         .slave_configure        = gdth_slave_configure,
4661         .bios_param             = gdth_bios_param,
4662         .proc_info              = gdth_proc_info,
4663         .eh_timed_out           = gdth_timed_out,
4664         .proc_name              = "gdth",
4665         .can_queue              = GDTH_MAXCMDS,
4666         .this_id                = -1,
4667         .sg_tablesize           = GDTH_MAXSG,
4668         .cmd_per_lun            = GDTH_MAXC_P_L,
4669         .unchecked_isa_dma      = 1,
4670         .use_clustering         = ENABLE_CLUSTERING,
4671 };
4672
4673 #ifdef CONFIG_ISA
4674 static int __init gdth_isa_probe_one(u32 isa_bios)
4675 {
4676         struct Scsi_Host *shp;
4677         gdth_ha_str *ha;
4678         dma_addr_t scratch_dma_handle = 0;
4679         int error, i;
4680
4681         if (!gdth_search_isa(isa_bios))
4682                 return -ENXIO;
4683
4684         shp = scsi_host_alloc(&gdth_template, sizeof(gdth_ha_str));
4685         if (!shp)
4686                 return -ENOMEM;
4687         ha = shost_priv(shp);
4688
4689         error = -ENODEV;
4690         if (!gdth_init_isa(isa_bios,ha))
4691                 goto out_host_put;
4692
4693         /* controller found and initialized */
4694         printk("Configuring GDT-ISA HA at BIOS 0x%05X IRQ %u DRQ %u\n",
4695                 isa_bios, ha->irq, ha->drq);
4696
4697         error = request_irq(ha->irq, gdth_interrupt, IRQF_DISABLED, "gdth", ha);
4698         if (error) {
4699                 printk("GDT-ISA: Unable to allocate IRQ\n");
4700                 goto out_host_put;
4701         }
4702
4703         error = request_dma(ha->drq, "gdth");
4704         if (error) {
4705                 printk("GDT-ISA: Unable to allocate DMA channel\n");
4706                 goto out_free_irq;
4707         }
4708
4709         set_dma_mode(ha->drq,DMA_MODE_CASCADE);
4710         enable_dma(ha->drq);
4711         shp->unchecked_isa_dma = 1;
4712         shp->irq = ha->irq;
4713         shp->dma_channel = ha->drq;
4714
4715         ha->hanum = gdth_ctr_count++;
4716         ha->shost = shp;
4717
4718         ha->pccb = &ha->cmdext;
4719         ha->ccb_phys = 0L;
4720         ha->pdev = NULL;
4721
4722         error = -ENOMEM;
4723
4724         ha->pscratch = pci_alloc_consistent(ha->pdev, GDTH_SCRATCH,
4725                                                 &scratch_dma_handle);
4726         if (!ha->pscratch)
4727                 goto out_dec_counters;
4728         ha->scratch_phys = scratch_dma_handle;
4729
4730         ha->pmsg = pci_alloc_consistent(ha->pdev, sizeof(gdth_msg_str),
4731                                                 &scratch_dma_handle);
4732         if (!ha->pmsg)
4733                 goto out_free_pscratch;
4734         ha->msg_phys = scratch_dma_handle;
4735
4736 #ifdef INT_COAL
4737         ha->coal_stat = pci_alloc_consistent(ha->pdev,
4738                                 sizeof(gdth_coal_status) * MAXOFFSETS,
4739                                 &scratch_dma_handle);
4740         if (!ha->coal_stat)
4741                 goto out_free_pmsg;
4742         ha->coal_stat_phys = scratch_dma_handle;
4743 #endif
4744
4745         ha->scratch_busy = FALSE;
4746         ha->req_first = NULL;
4747         ha->tid_cnt = MAX_HDRIVES;
4748         if (max_ids > 0 && max_ids < ha->tid_cnt)
4749                 ha->tid_cnt = max_ids;
4750         for (i = 0; i < GDTH_MAXCMDS; ++i)
4751                 ha->cmd_tab[i].cmnd = UNUSED_CMND;
4752         ha->scan_mode = rescan ? 0x10 : 0;
4753
4754         error = -ENODEV;
4755         if (!gdth_search_drives(ha)) {
4756                 printk("GDT-ISA: Error during device scan\n");
4757                 goto out_free_coal_stat;
4758         }
4759
4760         if (hdr_channel < 0 || hdr_channel > ha->bus_cnt)
4761                 hdr_channel = ha->bus_cnt;
4762         ha->virt_bus = hdr_channel;
4763
4764         if (ha->cache_feat & ha->raw_feat & ha->screen_feat & GDT_64BIT)
4765                 shp->max_cmd_len = 16;
4766
4767         shp->max_id      = ha->tid_cnt;
4768         shp->max_lun     = MAXLUN;
4769         shp->max_channel = ha->bus_cnt;
4770
4771         spin_lock_init(&ha->smp_lock);
4772         gdth_enable_int(ha);
4773
4774         error = scsi_add_host(shp, NULL);
4775         if (error)
4776                 goto out_free_coal_stat;
4777         list_add_tail(&ha->list, &gdth_instances);
4778         gdth_timer_init();
4779
4780         scsi_scan_host(shp);
4781
4782         return 0;
4783
4784  out_free_coal_stat:
4785 #ifdef INT_COAL
4786         pci_free_consistent(ha->pdev, sizeof(gdth_coal_status) * MAXOFFSETS,
4787                                 ha->coal_stat, ha->coal_stat_phys);
4788  out_free_pmsg:
4789 #endif
4790         pci_free_consistent(ha->pdev, sizeof(gdth_msg_str),
4791                                 ha->pmsg, ha->msg_phys);
4792  out_free_pscratch:
4793         pci_free_consistent(ha->pdev, GDTH_SCRATCH,
4794                                 ha->pscratch, ha->scratch_phys);
4795  out_dec_counters:
4796         gdth_ctr_count--;
4797  out_free_irq:
4798         free_irq(ha->irq, ha);
4799  out_host_put:
4800         scsi_host_put(shp);
4801         return error;
4802 }
4803 #endif /* CONFIG_ISA */
4804
4805 #ifdef CONFIG_EISA
4806 static int __init gdth_eisa_probe_one(u16 eisa_slot)
4807 {
4808         struct Scsi_Host *shp;
4809         gdth_ha_str *ha;
4810         dma_addr_t scratch_dma_handle = 0;
4811         int error, i;
4812
4813         if (!gdth_search_eisa(eisa_slot))
4814                 return -ENXIO;
4815
4816         shp = scsi_host_alloc(&gdth_template, sizeof(gdth_ha_str));
4817         if (!shp)
4818                 return -ENOMEM;
4819         ha = shost_priv(shp);
4820
4821         error = -ENODEV;
4822         if (!gdth_init_eisa(eisa_slot,ha))
4823                 goto out_host_put;
4824
4825         /* controller found and initialized */
4826         printk("Configuring GDT-EISA HA at Slot %d IRQ %u\n",
4827                 eisa_slot >> 12, ha->irq);
4828
4829         error = request_irq(ha->irq, gdth_interrupt, IRQF_DISABLED, "gdth", ha);
4830         if (error) {
4831                 printk("GDT-EISA: Unable to allocate IRQ\n");
4832                 goto out_host_put;
4833         }
4834
4835         shp->unchecked_isa_dma = 0;
4836         shp->irq = ha->irq;
4837         shp->dma_channel = 0xff;
4838
4839         ha->hanum = gdth_ctr_count++;
4840         ha->shost = shp;
4841
4842         TRACE2(("EISA detect Bus 0: hanum %d\n", ha->hanum));
4843
4844         ha->pccb = &ha->cmdext;
4845         ha->ccb_phys = 0L;
4846
4847         error = -ENOMEM;
4848
4849         ha->pdev = NULL;
4850         ha->pscratch = pci_alloc_consistent(ha->pdev, GDTH_SCRATCH,
4851                                                 &scratch_dma_handle);
4852         if (!ha->pscratch)
4853                 goto out_free_irq;
4854         ha->scratch_phys = scratch_dma_handle;
4855
4856         ha->pmsg = pci_alloc_consistent(ha->pdev, sizeof(gdth_msg_str),
4857                                                 &scratch_dma_handle);
4858         if (!ha->pmsg)
4859                 goto out_free_pscratch;
4860         ha->msg_phys = scratch_dma_handle;
4861
4862 #ifdef INT_COAL
4863         ha->coal_stat = pci_alloc_consistent(ha->pdev,
4864                         sizeof(gdth_coal_status) * MAXOFFSETS,
4865                         &scratch_dma_handle);
4866         if (!ha->coal_stat)
4867                 goto out_free_pmsg;
4868         ha->coal_stat_phys = scratch_dma_handle;
4869 #endif
4870
4871         ha->ccb_phys = pci_map_single(ha->pdev,ha->pccb,
4872                         sizeof(gdth_cmd_str), PCI_DMA_BIDIRECTIONAL);
4873         if (!ha->ccb_phys)
4874                 goto out_free_coal_stat;
4875
4876         ha->scratch_busy = FALSE;
4877         ha->req_first = NULL;
4878         ha->tid_cnt = MAX_HDRIVES;
4879         if (max_ids > 0 && max_ids < ha->tid_cnt)
4880                 ha->tid_cnt = max_ids;
4881         for (i = 0; i < GDTH_MAXCMDS; ++i)
4882                 ha->cmd_tab[i].cmnd = UNUSED_CMND;
4883         ha->scan_mode = rescan ? 0x10 : 0;
4884
4885         if (!gdth_search_drives(ha)) {
4886                 printk("GDT-EISA: Error during device scan\n");
4887                 error = -ENODEV;
4888                 goto out_free_ccb_phys;
4889         }
4890
4891         if (hdr_channel < 0 || hdr_channel > ha->bus_cnt)
4892                 hdr_channel = ha->bus_cnt;
4893         ha->virt_bus = hdr_channel;
4894
4895         if (ha->cache_feat & ha->raw_feat & ha->screen_feat & GDT_64BIT)
4896                 shp->max_cmd_len = 16;
4897
4898         shp->max_id      = ha->tid_cnt;
4899         shp->max_lun     = MAXLUN;
4900         shp->max_channel = ha->bus_cnt;
4901
4902         spin_lock_init(&ha->smp_lock);
4903         gdth_enable_int(ha);
4904
4905         error = scsi_add_host(shp, NULL);
4906         if (error)
4907                 goto out_free_coal_stat;
4908         list_add_tail(&ha->list, &gdth_instances);
4909         gdth_timer_init();
4910
4911         scsi_scan_host(shp);
4912
4913         return 0;
4914
4915  out_free_ccb_phys:
4916         pci_unmap_single(ha->pdev,ha->ccb_phys, sizeof(gdth_cmd_str),
4917                         PCI_DMA_BIDIRECTIONAL);
4918  out_free_coal_stat:
4919 #ifdef INT_COAL
4920         pci_free_consistent(ha->pdev, sizeof(gdth_coal_status) * MAXOFFSETS,
4921                                 ha->coal_stat, ha->coal_stat_phys);
4922  out_free_pmsg:
4923 #endif
4924         pci_free_consistent(ha->pdev, sizeof(gdth_msg_str),
4925                                 ha->pmsg, ha->msg_phys);
4926  out_free_pscratch:
4927         pci_free_consistent(ha->pdev, GDTH_SCRATCH,
4928                                 ha->pscratch, ha->scratch_phys);
4929  out_free_irq:
4930         free_irq(ha->irq, ha);
4931         gdth_ctr_count--;
4932  out_host_put:
4933         scsi_host_put(shp);
4934         return error;
4935 }
4936 #endif /* CONFIG_EISA */
4937
4938 #ifdef CONFIG_PCI
4939 static int __devinit gdth_pci_probe_one(gdth_pci_str *pcistr,
4940                              gdth_ha_str **ha_out)
4941 {
4942         struct Scsi_Host *shp;
4943         gdth_ha_str *ha;
4944         dma_addr_t scratch_dma_handle = 0;
4945         int error, i;
4946         struct pci_dev *pdev = pcistr->pdev;
4947
4948         *ha_out = NULL;
4949
4950         shp = scsi_host_alloc(&gdth_template, sizeof(gdth_ha_str));
4951         if (!shp)
4952                 return -ENOMEM;
4953         ha = shost_priv(shp);
4954
4955         error = -ENODEV;
4956         if (!gdth_init_pci(pdev, pcistr, ha))
4957                 goto out_host_put;
4958
4959         /* controller found and initialized */
4960         printk("Configuring GDT-PCI HA at %d/%d IRQ %u\n",
4961                 pdev->bus->number,
4962                 PCI_SLOT(pdev->devfn),
4963                 ha->irq);
4964
4965         error = request_irq(ha->irq, gdth_interrupt,
4966                                 IRQF_DISABLED|IRQF_SHARED, "gdth", ha);
4967         if (error) {
4968                 printk("GDT-PCI: Unable to allocate IRQ\n");
4969                 goto out_host_put;
4970         }
4971
4972         shp->unchecked_isa_dma = 0;
4973         shp->irq = ha->irq;
4974         shp->dma_channel = 0xff;
4975
4976         ha->hanum = gdth_ctr_count++;
4977         ha->shost = shp;
4978
4979         ha->pccb = &ha->cmdext;
4980         ha->ccb_phys = 0L;
4981
4982         error = -ENOMEM;
4983
4984         ha->pscratch = pci_alloc_consistent(ha->pdev, GDTH_SCRATCH,
4985                                                 &scratch_dma_handle);
4986         if (!ha->pscratch)
4987                 goto out_free_irq;
4988         ha->scratch_phys = scratch_dma_handle;
4989
4990         ha->pmsg = pci_alloc_consistent(ha->pdev, sizeof(gdth_msg_str),
4991                                         &scratch_dma_handle);
4992         if (!ha->pmsg)
4993                 goto out_free_pscratch;
4994         ha->msg_phys = scratch_dma_handle;
4995
4996 #ifdef INT_COAL
4997         ha->coal_stat = pci_alloc_consistent(ha->pdev,
4998                         sizeof(gdth_coal_status) * MAXOFFSETS,
4999                         &scratch_dma_handle);
5000         if (!ha->coal_stat)
5001                 goto out_free_pmsg;
5002         ha->coal_stat_phys = scratch_dma_handle;
5003 #endif
5004
5005         ha->scratch_busy = FALSE;
5006         ha->req_first = NULL;
5007         ha->tid_cnt = pdev->device >= 0x200 ? MAXID : MAX_HDRIVES;
5008         if (max_ids > 0 && max_ids < ha->tid_cnt)
5009                 ha->tid_cnt = max_ids;
5010         for (i = 0; i < GDTH_MAXCMDS; ++i)
5011                 ha->cmd_tab[i].cmnd = UNUSED_CMND;
5012         ha->scan_mode = rescan ? 0x10 : 0;
5013
5014         error = -ENODEV;
5015         if (!gdth_search_drives(ha)) {
5016                 printk("GDT-PCI %d: Error during device scan\n", ha->hanum);
5017                 goto out_free_coal_stat;
5018         }
5019
5020         if (hdr_channel < 0 || hdr_channel > ha->bus_cnt)
5021                 hdr_channel = ha->bus_cnt;
5022         ha->virt_bus = hdr_channel;
5023
5024         /* 64-bit DMA only supported from FW >= x.43 */
5025         if (!(ha->cache_feat & ha->raw_feat & ha->screen_feat & GDT_64BIT) ||
5026             !ha->dma64_support) {
5027                 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
5028                         printk(KERN_WARNING "GDT-PCI %d: "
5029                                 "Unable to set 32-bit DMA\n", ha->hanum);
5030                                 goto out_free_coal_stat;
5031                 }
5032         } else {
5033                 shp->max_cmd_len = 16;
5034                 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
5035                         printk("GDT-PCI %d: 64-bit DMA enabled\n", ha->hanum);
5036                 } else if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
5037                         printk(KERN_WARNING "GDT-PCI %d: "
5038                                 "Unable to set 64/32-bit DMA\n", ha->hanum);
5039                         goto out_free_coal_stat;
5040                 }
5041         }
5042
5043         shp->max_id      = ha->tid_cnt;
5044         shp->max_lun     = MAXLUN;
5045         shp->max_channel = ha->bus_cnt;
5046
5047         spin_lock_init(&ha->smp_lock);
5048         gdth_enable_int(ha);
5049
5050         error = scsi_add_host(shp, &pdev->dev);
5051         if (error)
5052                 goto out_free_coal_stat;
5053         list_add_tail(&ha->list, &gdth_instances);
5054
5055         pci_set_drvdata(ha->pdev, ha);
5056         gdth_timer_init();
5057
5058         scsi_scan_host(shp);
5059
5060         *ha_out = ha;
5061
5062         return 0;
5063
5064  out_free_coal_stat:
5065 #ifdef INT_COAL
5066         pci_free_consistent(ha->pdev, sizeof(gdth_coal_status) * MAXOFFSETS,
5067                                 ha->coal_stat, ha->coal_stat_phys);
5068  out_free_pmsg:
5069 #endif
5070         pci_free_consistent(ha->pdev, sizeof(gdth_msg_str),
5071                                 ha->pmsg, ha->msg_phys);
5072  out_free_pscratch:
5073         pci_free_consistent(ha->pdev, GDTH_SCRATCH,
5074                                 ha->pscratch, ha->scratch_phys);
5075  out_free_irq:
5076         free_irq(ha->irq, ha);
5077         gdth_ctr_count--;
5078  out_host_put:
5079         scsi_host_put(shp);
5080         return error;
5081 }
5082 #endif /* CONFIG_PCI */
5083
5084 static void gdth_remove_one(gdth_ha_str *ha)
5085 {
5086         struct Scsi_Host *shp = ha->shost;
5087
5088         TRACE2(("gdth_remove_one()\n"));
5089
5090         scsi_remove_host(shp);
5091
5092         gdth_flush(ha);
5093
5094         if (ha->sdev) {
5095                 scsi_free_host_dev(ha->sdev);
5096                 ha->sdev = NULL;
5097         }
5098
5099         if (shp->irq)
5100                 free_irq(shp->irq,ha);
5101
5102 #ifdef CONFIG_ISA
5103         if (shp->dma_channel != 0xff)
5104                 free_dma(shp->dma_channel);
5105 #endif
5106 #ifdef INT_COAL
5107         if (ha->coal_stat)
5108                 pci_free_consistent(ha->pdev, sizeof(gdth_coal_status) *
5109                         MAXOFFSETS, ha->coal_stat, ha->coal_stat_phys);
5110 #endif
5111         if (ha->pscratch)
5112                 pci_free_consistent(ha->pdev, GDTH_SCRATCH,
5113                         ha->pscratch, ha->scratch_phys);
5114         if (ha->pmsg)
5115                 pci_free_consistent(ha->pdev, sizeof(gdth_msg_str),
5116                         ha->pmsg, ha->msg_phys);
5117         if (ha->ccb_phys)
5118                 pci_unmap_single(ha->pdev,ha->ccb_phys,
5119                         sizeof(gdth_cmd_str),PCI_DMA_BIDIRECTIONAL);
5120
5121         scsi_host_put(shp);
5122 }
5123
5124 static int gdth_halt(struct notifier_block *nb, unsigned long event, void *buf)
5125 {
5126         gdth_ha_str *ha;
5127
5128         TRACE2(("gdth_halt() event %d\n", (int)event));
5129         if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF)
5130                 return NOTIFY_DONE;
5131
5132         list_for_each_entry(ha, &gdth_instances, list)
5133                 gdth_flush(ha);
5134
5135         return NOTIFY_OK;
5136 }
5137
5138 static struct notifier_block gdth_notifier = {
5139     gdth_halt, NULL, 0
5140 };
5141
5142 static int __init gdth_init(void)
5143 {
5144         if (disable) {
5145                 printk("GDT-HA: Controller driver disabled from"
5146                        " command line !\n");
5147                 return 0;
5148         }
5149
5150         printk("GDT-HA: Storage RAID Controller Driver. Version: %s\n",
5151                GDTH_VERSION_STR);
5152
5153         /* initializations */
5154         gdth_polling = TRUE;
5155         gdth_clear_events();
5156         init_timer(&gdth_timer);
5157
5158         /* As default we do not probe for EISA or ISA controllers */
5159         if (probe_eisa_isa) {
5160                 /* scanning for controllers, at first: ISA controller */
5161 #ifdef CONFIG_ISA
5162                 u32 isa_bios;
5163                 for (isa_bios = 0xc8000UL; isa_bios <= 0xd8000UL;
5164                                 isa_bios += 0x8000UL)
5165                         gdth_isa_probe_one(isa_bios);
5166 #endif
5167 #ifdef CONFIG_EISA
5168                 {
5169                         u16 eisa_slot;
5170                         for (eisa_slot = 0x1000; eisa_slot <= 0x8000;
5171                                                  eisa_slot += 0x1000)
5172                                 gdth_eisa_probe_one(eisa_slot);
5173                 }
5174 #endif
5175         }
5176
5177 #ifdef CONFIG_PCI
5178         /* scanning for PCI controllers */
5179         if (pci_register_driver(&gdth_pci_driver)) {
5180                 gdth_ha_str *ha;
5181
5182                 list_for_each_entry(ha, &gdth_instances, list)
5183                         gdth_remove_one(ha);
5184                 return -ENODEV;
5185         }
5186 #endif /* CONFIG_PCI */
5187
5188         TRACE2(("gdth_detect() %d controller detected\n", gdth_ctr_count));
5189
5190         major = register_chrdev(0,"gdth", &gdth_fops);
5191         register_reboot_notifier(&gdth_notifier);
5192         gdth_polling = FALSE;
5193         return 0;
5194 }
5195
5196 static void __exit gdth_exit(void)
5197 {
5198         gdth_ha_str *ha;
5199
5200         unregister_chrdev(major, "gdth");
5201         unregister_reboot_notifier(&gdth_notifier);
5202
5203 #ifdef GDTH_STATISTICS
5204         del_timer_sync(&gdth_timer);
5205 #endif
5206
5207 #ifdef CONFIG_PCI
5208         pci_unregister_driver(&gdth_pci_driver);
5209 #endif
5210
5211         list_for_each_entry(ha, &gdth_instances, list)
5212                 gdth_remove_one(ha);
5213 }
5214
5215 module_init(gdth_init);
5216 module_exit(gdth_exit);
5217
5218 #ifndef MODULE
5219 __setup("gdth=", option_setup);
5220 #endif