Version:  2.0.40 2.2.26 2.4.37 2.6.39 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15

Linux/drivers/scsi/gdth.c

  1 /************************************************************************
  2  * Linux driver for                                                     *  
  3  * ICP vortex GmbH:    GDT ISA/EISA/PCI Disk Array Controllers          *
  4  * Intel Corporation:  Storage RAID Controllers                         *
  5  *                                                                      *
  6  * gdth.c                                                               *
  7  * Copyright (C) 1995-06 ICP vortex GmbH, Achim Leubner                 *
  8  * Copyright (C) 2002-04 Intel Corporation                              *
  9  * Copyright (C) 2003-06 Adaptec Inc.                                   *
 10  * <achim_leubner@adaptec.com>                                          *
 11  *                                                                      *
 12  * Additions/Fixes:                                                     *
 13  * Boji Tony Kannanthanam <boji.t.kannanthanam@intel.com>               *
 14  * Johannes Dinner <johannes_dinner@adaptec.com>                        *
 15  *                                                                      *
 16  * This program is free software; you can redistribute it and/or modify *
 17  * it under the terms of the GNU General Public License as published    *
 18  * by the Free Software Foundation; either version 2 of the License,    *
 19  * or (at your option) any later version.                               *
 20  *                                                                      *
 21  * This program is distributed in the hope that it will be useful,      *
 22  * but WITHOUT ANY WARRANTY; without even the implied warranty of       *
 23  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the         *
 24  * GNU General Public License for more details.                         *
 25  *                                                                      *
 26  * You should have received a copy of the GNU General Public License    *
 27  * along with this kernel; if not, write to the Free Software           *
 28  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.            *
 29  *                                                                      *
 30  * Linux kernel 2.6.x supported                                         *
 31  *                                                                      *
 32  ************************************************************************/
 33 
 34 /* All GDT Disk Array Controllers are fully supported by this driver.
 35  * This includes the PCI/EISA/ISA SCSI Disk Array Controllers and the
 36  * PCI Fibre Channel Disk Array Controllers. See gdth.h for a complete
 37  * list of all controller types.
 38  * 
 39  * If you have one or more GDT3000/3020 EISA controllers with 
 40  * controller BIOS disabled, you have to set the IRQ values with the 
 41  * command line option "gdth=irq1,irq2,...", where the irq1,irq2,... are
 42  * the IRQ values for the EISA controllers.
 43  * 
 44  * After the optional list of IRQ values, other possible 
 45  * command line options are:
 46  * disable:Y                    disable driver
 47  * disable:N                    enable driver
 48  * reserve_mode:0               reserve no drives for the raw service
 49  * reserve_mode:1               reserve all not init., removable drives
 50  * reserve_mode:2               reserve all not init. drives
 51  * reserve_list:h,b,t,l,h,b,t,l,...     reserve particular drive(s) with 
 52  *                              h- controller no., b- channel no., 
 53  *                              t- target ID, l- LUN
 54  * reverse_scan:Y               reverse scan order for PCI controllers         
 55  * reverse_scan:N               scan PCI controllers like BIOS
 56  * max_ids:x                    x - target ID count per channel (1..MAXID)
 57  * rescan:Y                     rescan all channels/IDs 
 58  * rescan:N                     use all devices found until now
 59  * hdr_channel:x                x - number of virtual bus for host drives
 60  * shared_access:Y              disable driver reserve/release protocol to 
 61  *                              access a shared resource from several nodes, 
 62  *                              appropriate controller firmware required
 63  * shared_access:N              enable driver reserve/release protocol
 64  * probe_eisa_isa:Y             scan for EISA/ISA controllers
 65  * probe_eisa_isa:N             do not scan for EISA/ISA controllers
 66  * force_dma32:Y                use only 32 bit DMA mode
 67  * force_dma32:N                use 64 bit DMA mode, if supported
 68  *
 69  * The default values are: "gdth=disable:N,reserve_mode:1,reverse_scan:N,
 70  *                          max_ids:127,rescan:N,hdr_channel:0,
 71  *                          shared_access:Y,probe_eisa_isa:N,force_dma32:N".
 72  * Here is another example: "gdth=reserve_list:0,1,2,0,0,1,3,0,rescan:Y".
 73  * 
 74  * When loading the gdth driver as a module, the same options are available. 
 75  * You can set the IRQs with "IRQ=...". However, the syntax to specify the
 76  * options changes slightly. You must replace all ',' between options 
 77  * with ' ' and all ':' with '=' and you must use 
 78  * '1' in place of 'Y' and '' in place of 'N'.
 79  * 
 80  * Default: "modprobe gdth disable=0 reserve_mode=1 reverse_scan=0
 81  *           max_ids=127 rescan=0 hdr_channel=0 shared_access=0
 82  *           probe_eisa_isa=0 force_dma32=0"
 83  * The other example: "modprobe gdth reserve_list=0,1,2,0,0,1,3,0 rescan=1".
 84  */
 85 
 86 /* The meaning of the Scsi_Pointer members in this driver is as follows:
 87  * ptr:                     Chaining
 88  * this_residual:           unused
 89  * buffer:                  unused
 90  * dma_handle:              unused
 91  * buffers_residual:        unused
 92  * Status:                  unused
 93  * Message:                 unused
 94  * have_data_in:            unused
 95  * sent_command:            unused
 96  * phase:                   unused
 97  */
 98 
 99 
100 /* interrupt coalescing */
101 /* #define INT_COAL */
102 
103 /* statistics */
104 #define GDTH_STATISTICS
105 
106 #include <linux/module.h>
107 
108 #include <linux/version.h>
109 #include <linux/kernel.h>
110 #include <linux/types.h>
111 #include <linux/pci.h>
112 #include <linux/string.h>
113 #include <linux/ctype.h>
114 #include <linux/ioport.h>
115 #include <linux/delay.h>
116 #include <linux/interrupt.h>
117 #include <linux/in.h>
118 #include <linux/proc_fs.h>
119 #include <linux/time.h>
120 #include <linux/timer.h>
121 #include <linux/dma-mapping.h>
122 #include <linux/list.h>
123 #include <linux/mutex.h>
124 #include <linux/slab.h>
125 
126 #ifdef GDTH_RTC
127 #include <linux/mc146818rtc.h>
128 #endif
129 #include <linux/reboot.h>
130 
131 #include <asm/dma.h>
132 #include <asm/io.h>
133 #include <asm/uaccess.h>
134 #include <linux/spinlock.h>
135 #include <linux/blkdev.h>
136 #include <linux/scatterlist.h>
137 
138 #include "scsi.h"
139 #include <scsi/scsi_host.h>
140 #include "gdth.h"
141 
142 static DEFINE_MUTEX(gdth_mutex);
143 static void gdth_delay(int milliseconds);
144 static void gdth_eval_mapping(u32 size, u32 *cyls, int *heads, int *secs);
145 static irqreturn_t gdth_interrupt(int irq, void *dev_id);
146 static irqreturn_t __gdth_interrupt(gdth_ha_str *ha,
147                                     int gdth_from_wait, int* pIndex);
148 static int gdth_sync_event(gdth_ha_str *ha, int service, u8 index,
149                                                                Scsi_Cmnd *scp);
150 static int gdth_async_event(gdth_ha_str *ha);
151 static void gdth_log_event(gdth_evt_data *dvr, char *buffer);
152 
153 static void gdth_putq(gdth_ha_str *ha, Scsi_Cmnd *scp, u8 priority);
154 static void gdth_next(gdth_ha_str *ha);
155 static int gdth_fill_raw_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, u8 b);
156 static int gdth_special_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp);
157 static gdth_evt_str *gdth_store_event(gdth_ha_str *ha, u16 source,
158                                       u16 idx, gdth_evt_data *evt);
159 static int gdth_read_event(gdth_ha_str *ha, int handle, gdth_evt_str *estr);
160 static void gdth_readapp_event(gdth_ha_str *ha, u8 application, 
161                                gdth_evt_str *estr);
162 static void gdth_clear_events(void);
163 
164 static void gdth_copy_internal_data(gdth_ha_str *ha, Scsi_Cmnd *scp,
165                                     char *buffer, u16 count);
166 static int gdth_internal_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp);
167 static int gdth_fill_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, u16 hdrive);
168 
169 static void gdth_enable_int(gdth_ha_str *ha);
170 static int gdth_test_busy(gdth_ha_str *ha);
171 static int gdth_get_cmd_index(gdth_ha_str *ha);
172 static void gdth_release_event(gdth_ha_str *ha);
173 static int gdth_wait(gdth_ha_str *ha, int index,u32 time);
174 static int gdth_internal_cmd(gdth_ha_str *ha, u8 service, u16 opcode,
175                                              u32 p1, u64 p2,u64 p3);
176 static int gdth_search_drives(gdth_ha_str *ha);
177 static int gdth_analyse_hdrive(gdth_ha_str *ha, u16 hdrive);
178 
179 static const char *gdth_ctr_name(gdth_ha_str *ha);
180 
181 static int gdth_open(struct inode *inode, struct file *filep);
182 static int gdth_close(struct inode *inode, struct file *filep);
183 static long gdth_unlocked_ioctl(struct file *filep, unsigned int cmd,
184                                 unsigned long arg);
185 
186 static void gdth_flush(gdth_ha_str *ha);
187 static int gdth_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd);
188 static int __gdth_queuecommand(gdth_ha_str *ha, struct scsi_cmnd *scp,
189                                 struct gdth_cmndinfo *cmndinfo);
190 static void gdth_scsi_done(struct scsi_cmnd *scp);
191 
192 #ifdef DEBUG_GDTH
193 static u8   DebugState = DEBUG_GDTH;
194 
195 #ifdef __SERIAL__
196 #define MAX_SERBUF 160
197 static void ser_init(void);
198 static void ser_puts(char *str);
199 static void ser_putc(char c);
200 static int  ser_printk(const char *fmt, ...);
201 static char strbuf[MAX_SERBUF+1];
202 #ifdef __COM2__
203 #define COM_BASE 0x2f8
204 #else
205 #define COM_BASE 0x3f8
206 #endif
207 static void ser_init()
208 {
209     unsigned port=COM_BASE;
210 
211     outb(0x80,port+3);
212     outb(0,port+1);
213     /* 19200 Baud, if 9600: outb(12,port) */
214     outb(6, port);
215     outb(3,port+3);
216     outb(0,port+1);
217     /*
218     ser_putc('I');
219     ser_putc(' ');
220     */
221 }
222 
223 static void ser_puts(char *str)
224 {
225     char *ptr;
226 
227     ser_init();
228     for (ptr=str;*ptr;++ptr)
229         ser_putc(*ptr);
230 }
231 
232 static void ser_putc(char c)
233 {
234     unsigned port=COM_BASE;
235 
236     while ((inb(port+5) & 0x20)==0);
237     outb(c,port);
238     if (c==0x0a)
239     {
240         while ((inb(port+5) & 0x20)==0);
241         outb(0x0d,port);
242     }
243 }
244 
245 static int ser_printk(const char *fmt, ...)
246 {
247     va_list args;
248     int i;
249 
250     va_start(args,fmt);
251     i = vsprintf(strbuf,fmt,args);
252     ser_puts(strbuf);
253     va_end(args);
254     return i;
255 }
256 
257 #define TRACE(a)    {if (DebugState==1) {ser_printk a;}}
258 #define TRACE2(a)   {if (DebugState==1 || DebugState==2) {ser_printk a;}}
259 #define TRACE3(a)   {if (DebugState!=0) {ser_printk a;}}
260 
261 #else /* !__SERIAL__ */
262 #define TRACE(a)    {if (DebugState==1) {printk a;}}
263 #define TRACE2(a)   {if (DebugState==1 || DebugState==2) {printk a;}}
264 #define TRACE3(a)   {if (DebugState!=0) {printk a;}}
265 #endif
266 
267 #else /* !DEBUG */
268 #define TRACE(a)
269 #define TRACE2(a)
270 #define TRACE3(a)
271 #endif
272 
273 #ifdef GDTH_STATISTICS
274 static u32 max_rq=0, max_index=0, max_sg=0;
275 #ifdef INT_COAL
276 static u32 max_int_coal=0;
277 #endif
278 static u32 act_ints=0, act_ios=0, act_stats=0, act_rq=0;
279 static struct timer_list gdth_timer;
280 #endif
281 
282 #define PTR2USHORT(a)   (u16)(unsigned long)(a)
283 #define GDTOFFSOF(a,b)  (size_t)&(((a*)0)->b)
284 #define INDEX_OK(i,t)   ((i)<ARRAY_SIZE(t))
285 
286 #define BUS_L2P(a,b)    ((b)>(a)->virt_bus ? (b-1):(b))
287 
288 #ifdef CONFIG_ISA
289 static u8   gdth_drq_tab[4] = {5,6,7,7};            /* DRQ table */
290 #endif
291 #if defined(CONFIG_EISA) || defined(CONFIG_ISA)
292 static u8   gdth_irq_tab[6] = {0,10,11,12,14,0};    /* IRQ table */
293 #endif
294 static u8   gdth_polling;                           /* polling if TRUE */
295 static int      gdth_ctr_count  = 0;                    /* controller count */
296 static LIST_HEAD(gdth_instances);                       /* controller list */
297 static u8   gdth_write_through = FALSE;             /* write through */
298 static gdth_evt_str ebuffer[MAX_EVENTS];                /* event buffer */
299 static int elastidx;
300 static int eoldidx;
301 static int major;
302 
303 #define DIN     1                               /* IN data direction */
304 #define DOU     2                               /* OUT data direction */
305 #define DNO     DIN                             /* no data transfer */
306 #define DUN     DIN                             /* unknown data direction */
307 static u8 gdth_direction_tab[0x100] = {
308     DNO,DNO,DIN,DIN,DOU,DIN,DIN,DOU,DIN,DUN,DOU,DOU,DUN,DUN,DUN,DIN,
309     DNO,DIN,DIN,DOU,DIN,DOU,DNO,DNO,DOU,DNO,DIN,DNO,DIN,DOU,DNO,DUN,
310     DIN,DUN,DIN,DUN,DOU,DIN,DUN,DUN,DIN,DIN,DOU,DNO,DUN,DIN,DOU,DOU,
311     DOU,DOU,DOU,DNO,DIN,DNO,DNO,DIN,DOU,DOU,DOU,DOU,DIN,DOU,DIN,DOU,
312     DOU,DOU,DIN,DIN,DIN,DNO,DUN,DNO,DNO,DNO,DUN,DNO,DOU,DIN,DUN,DUN,
313     DUN,DUN,DUN,DUN,DUN,DOU,DUN,DUN,DUN,DUN,DIN,DUN,DUN,DUN,DUN,DUN,
314     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
315     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
316     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DIN,DUN,DOU,DUN,DUN,DUN,DUN,DUN,
317     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DIN,DUN,
318     DUN,DUN,DUN,DUN,DUN,DNO,DNO,DUN,DIN,DNO,DOU,DUN,DNO,DUN,DOU,DOU,
319     DOU,DOU,DOU,DNO,DUN,DIN,DOU,DIN,DIN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
320     DUN,DUN,DOU,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
321     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
322     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DOU,DUN,DUN,DUN,DUN,DUN,
323     DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN
324 };
325 
326 /* LILO and modprobe/insmod parameters */
327 /* IRQ list for GDT3000/3020 EISA controllers */
328 static int irq[MAXHA] __initdata = 
329 {0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
330  0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};
331 /* disable driver flag */
332 static int disable __initdata = 0;
333 /* reserve flag */
334 static int reserve_mode = 1;                  
335 /* reserve list */
336 static int reserve_list[MAX_RES_ARGS] = 
337 {0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
338  0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
339  0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};
340 /* scan order for PCI controllers */
341 static int reverse_scan = 0;
342 /* virtual channel for the host drives */
343 static int hdr_channel = 0;
344 /* max. IDs per channel */
345 static int max_ids = MAXID;
346 /* rescan all IDs */
347 static int rescan = 0;
348 /* shared access */
349 static int shared_access = 1;
350 /* enable support for EISA and ISA controllers */
351 static int probe_eisa_isa = 0;
352 /* 64 bit DMA mode, support for drives > 2 TB, if force_dma32 = 0 */
353 static int force_dma32 = 0;
354 
355 /* parameters for modprobe/insmod */
356 module_param_array(irq, int, NULL, 0);
357 module_param(disable, int, 0);
358 module_param(reserve_mode, int, 0);
359 module_param_array(reserve_list, int, NULL, 0);
360 module_param(reverse_scan, int, 0);
361 module_param(hdr_channel, int, 0);
362 module_param(max_ids, int, 0);
363 module_param(rescan, int, 0);
364 module_param(shared_access, int, 0);
365 module_param(probe_eisa_isa, int, 0);
366 module_param(force_dma32, int, 0);
367 MODULE_AUTHOR("Achim Leubner");
368 MODULE_LICENSE("GPL");
369 
370 /* ioctl interface */
371 static const struct file_operations gdth_fops = {
372     .unlocked_ioctl   = gdth_unlocked_ioctl,
373     .open    = gdth_open,
374     .release = gdth_close,
375     .llseek = noop_llseek,
376 };
377 
378 #include "gdth_proc.h"
379 #include "gdth_proc.c"
380 
381 static gdth_ha_str *gdth_find_ha(int hanum)
382 {
383         gdth_ha_str *ha;
384 
385         list_for_each_entry(ha, &gdth_instances, list)
386                 if (hanum == ha->hanum)
387                         return ha;
388 
389         return NULL;
390 }
391 
392 static struct gdth_cmndinfo *gdth_get_cmndinfo(gdth_ha_str *ha)
393 {
394         struct gdth_cmndinfo *priv = NULL;
395         unsigned long flags;
396         int i;
397 
398         spin_lock_irqsave(&ha->smp_lock, flags);
399 
400         for (i=0; i<GDTH_MAXCMDS; ++i) {
401                 if (ha->cmndinfo[i].index == 0) {
402                         priv = &ha->cmndinfo[i];
403                         memset(priv, 0, sizeof(*priv));
404                         priv->index = i+1;
405                         break;
406                 }
407         }
408 
409         spin_unlock_irqrestore(&ha->smp_lock, flags);
410 
411         return priv;
412 }
413 
414 static void gdth_put_cmndinfo(struct gdth_cmndinfo *priv)
415 {
416         BUG_ON(!priv);
417         priv->index = 0;
418 }
419 
420 static void gdth_delay(int milliseconds)
421 {
422     if (milliseconds == 0) {
423         udelay(1);
424     } else {
425         mdelay(milliseconds);
426     }
427 }
428 
429 static void gdth_scsi_done(struct scsi_cmnd *scp)
430 {
431         struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
432         int internal_command = cmndinfo->internal_command;
433 
434         TRACE2(("gdth_scsi_done()\n"));
435 
436         gdth_put_cmndinfo(cmndinfo);
437         scp->host_scribble = NULL;
438 
439         if (internal_command)
440                 complete((struct completion *)scp->request);
441         else
442                 scp->scsi_done(scp);
443 }
444 
445 int __gdth_execute(struct scsi_device *sdev, gdth_cmd_str *gdtcmd, char *cmnd,
446                    int timeout, u32 *info)
447 {
448     gdth_ha_str *ha = shost_priv(sdev->host);
449     Scsi_Cmnd *scp;
450     struct gdth_cmndinfo cmndinfo;
451     DECLARE_COMPLETION_ONSTACK(wait);
452     int rval;
453 
454     scp = kzalloc(sizeof(*scp), GFP_KERNEL);
455     if (!scp)
456         return -ENOMEM;
457 
458     scp->sense_buffer = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
459     if (!scp->sense_buffer) {
460         kfree(scp);
461         return -ENOMEM;
462     }
463 
464     scp->device = sdev;
465     memset(&cmndinfo, 0, sizeof(cmndinfo));
466 
467     /* use request field to save the ptr. to completion struct. */
468     scp->request = (struct request *)&wait;
469     scp->cmd_len = 12;
470     scp->cmnd = cmnd;
471     cmndinfo.priority = IOCTL_PRI;
472     cmndinfo.internal_cmd_str = gdtcmd;
473     cmndinfo.internal_command = 1;
474 
475     TRACE(("__gdth_execute() cmd 0x%x\n", scp->cmnd[0]));
476     __gdth_queuecommand(ha, scp, &cmndinfo);
477 
478     wait_for_completion(&wait);
479 
480     rval = cmndinfo.status;
481     if (info)
482         *info = cmndinfo.info;
483     kfree(scp->sense_buffer);
484     kfree(scp);
485     return rval;
486 }
487 
488 int gdth_execute(struct Scsi_Host *shost, gdth_cmd_str *gdtcmd, char *cmnd,
489                  int timeout, u32 *info)
490 {
491     struct scsi_device *sdev = scsi_get_host_dev(shost);
492     int rval = __gdth_execute(sdev, gdtcmd, cmnd, timeout, info);
493 
494     scsi_free_host_dev(sdev);
495     return rval;
496 }
497 
498 static void gdth_eval_mapping(u32 size, u32 *cyls, int *heads, int *secs)
499 {
500     *cyls = size /HEADS/SECS;
501     if (*cyls <= MAXCYLS) {
502         *heads = HEADS;
503         *secs = SECS;
504     } else {                                        /* too high for 64*32 */
505         *cyls = size /MEDHEADS/MEDSECS;
506         if (*cyls <= MAXCYLS) {
507             *heads = MEDHEADS;
508             *secs = MEDSECS;
509         } else {                                    /* too high for 127*63 */
510             *cyls = size /BIGHEADS/BIGSECS;
511             *heads = BIGHEADS;
512             *secs = BIGSECS;
513         }
514     }
515 }
516 
517 /* controller search and initialization functions */
518 #ifdef CONFIG_EISA
519 static int __init gdth_search_eisa(u16 eisa_adr)
520 {
521     u32 id;
522     
523     TRACE(("gdth_search_eisa() adr. %x\n",eisa_adr));
524     id = inl(eisa_adr+ID0REG);
525     if (id == GDT3A_ID || id == GDT3B_ID) {     /* GDT3000A or GDT3000B */
526         if ((inb(eisa_adr+EISAREG) & 8) == 0)   
527             return 0;                           /* not EISA configured */
528         return 1;
529     }
530     if (id == GDT3_ID)                          /* GDT3000 */
531         return 1;
532 
533     return 0;                                   
534 }
535 #endif /* CONFIG_EISA */
536 
537 #ifdef CONFIG_ISA
538 static int __init gdth_search_isa(u32 bios_adr)
539 {
540     void __iomem *addr;
541     u32 id;
542 
543     TRACE(("gdth_search_isa() bios adr. %x\n",bios_adr));
544     if ((addr = ioremap(bios_adr+BIOS_ID_OFFS, sizeof(u32))) != NULL) {
545         id = readl(addr);
546         iounmap(addr);
547         if (id == GDT2_ID)                          /* GDT2000 */
548             return 1;
549     }
550     return 0;
551 }
552 #endif /* CONFIG_ISA */
553 
554 #ifdef CONFIG_PCI
555 
556 static bool gdth_search_vortex(u16 device)
557 {
558         if (device <= PCI_DEVICE_ID_VORTEX_GDT6555)
559                 return true;
560         if (device >= PCI_DEVICE_ID_VORTEX_GDT6x17RP &&
561             device <= PCI_DEVICE_ID_VORTEX_GDTMAXRP)
562                 return true;
563         if (device == PCI_DEVICE_ID_VORTEX_GDTNEWRX ||
564             device == PCI_DEVICE_ID_VORTEX_GDTNEWRX2)
565                 return true;
566         return false;
567 }
568 
569 static int gdth_pci_probe_one(gdth_pci_str *pcistr, gdth_ha_str **ha_out);
570 static int gdth_pci_init_one(struct pci_dev *pdev,
571                              const struct pci_device_id *ent);
572 static void gdth_pci_remove_one(struct pci_dev *pdev);
573 static void gdth_remove_one(gdth_ha_str *ha);
574 
575 /* Vortex only makes RAID controllers.
576  * We do not really want to specify all 550 ids here, so wildcard match.
577  */
578 static const struct pci_device_id gdthtable[] = {
579         { PCI_VDEVICE(VORTEX, PCI_ANY_ID) },
580         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_SRC) },
581         { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_SRC_XSCALE) },
582         { }     /* terminate list */
583 };
584 MODULE_DEVICE_TABLE(pci, gdthtable);
585 
586 static struct pci_driver gdth_pci_driver = {
587         .name           = "gdth",
588         .id_table       = gdthtable,
589         .probe          = gdth_pci_init_one,
590         .remove         = gdth_pci_remove_one,
591 };
592 
593 static void gdth_pci_remove_one(struct pci_dev *pdev)
594 {
595         gdth_ha_str *ha = pci_get_drvdata(pdev);
596 
597         list_del(&ha->list);
598         gdth_remove_one(ha);
599 
600         pci_disable_device(pdev);
601 }
602 
603 static int gdth_pci_init_one(struct pci_dev *pdev,
604                              const struct pci_device_id *ent)
605 {
606         u16 vendor = pdev->vendor;
607         u16 device = pdev->device;
608         unsigned long base0, base1, base2;
609         int rc;
610         gdth_pci_str gdth_pcistr;
611         gdth_ha_str *ha = NULL;
612     
613         TRACE(("gdth_search_dev() cnt %d vendor %x device %x\n",
614                gdth_ctr_count, vendor, device));
615 
616         memset(&gdth_pcistr, 0, sizeof(gdth_pcistr));
617 
618         if (vendor == PCI_VENDOR_ID_VORTEX && !gdth_search_vortex(device))
619                 return -ENODEV;
620 
621         rc = pci_enable_device(pdev);
622         if (rc)
623                 return rc;
624 
625         if (gdth_ctr_count >= MAXHA)
626                 return -EBUSY;
627 
628         /* GDT PCI controller found, resources are already in pdev */
629         gdth_pcistr.pdev = pdev;
630         base0 = pci_resource_flags(pdev, 0);
631         base1 = pci_resource_flags(pdev, 1);
632         base2 = pci_resource_flags(pdev, 2);
633         if (device <= PCI_DEVICE_ID_VORTEX_GDT6000B ||   /* GDT6000/B */
634             device >= PCI_DEVICE_ID_VORTEX_GDT6x17RP) {  /* MPR */
635             if (!(base0 & IORESOURCE_MEM)) 
636                 return -ENODEV;
637             gdth_pcistr.dpmem = pci_resource_start(pdev, 0);
638         } else {                                  /* GDT6110, GDT6120, .. */
639             if (!(base0 & IORESOURCE_MEM) ||
640                 !(base2 & IORESOURCE_MEM) ||
641                 !(base1 & IORESOURCE_IO)) 
642                 return -ENODEV;
643             gdth_pcistr.dpmem = pci_resource_start(pdev, 2);
644             gdth_pcistr.io    = pci_resource_start(pdev, 1);
645         }
646         TRACE2(("Controller found at %d/%d, irq %d, dpmem 0x%lx\n",
647                 gdth_pcistr.pdev->bus->number,
648                 PCI_SLOT(gdth_pcistr.pdev->devfn),
649                 gdth_pcistr.irq,
650                 gdth_pcistr.dpmem));
651 
652         rc = gdth_pci_probe_one(&gdth_pcistr, &ha);
653         if (rc)
654                 return rc;
655 
656         return 0;
657 }
658 #endif /* CONFIG_PCI */
659 
660 #ifdef CONFIG_EISA
661 static int __init gdth_init_eisa(u16 eisa_adr,gdth_ha_str *ha)
662 {
663     u32 retries,id;
664     u8 prot_ver,eisacf,i,irq_found;
665 
666     TRACE(("gdth_init_eisa() adr. %x\n",eisa_adr));
667     
668     /* disable board interrupts, deinitialize services */
669     outb(0xff,eisa_adr+EDOORREG);
670     outb(0x00,eisa_adr+EDENABREG);
671     outb(0x00,eisa_adr+EINTENABREG);
672     
673     outb(0xff,eisa_adr+LDOORREG);
674     retries = INIT_RETRIES;
675     gdth_delay(20);
676     while (inb(eisa_adr+EDOORREG) != 0xff) {
677         if (--retries == 0) {
678             printk("GDT-EISA: Initialization error (DEINIT failed)\n");
679             return 0;
680         }
681         gdth_delay(1);
682         TRACE2(("wait for DEINIT: retries=%d\n",retries));
683     }
684     prot_ver = inb(eisa_adr+MAILBOXREG);
685     outb(0xff,eisa_adr+EDOORREG);
686     if (prot_ver != PROTOCOL_VERSION) {
687         printk("GDT-EISA: Illegal protocol version\n");
688         return 0;
689     }
690     ha->bmic = eisa_adr;
691     ha->brd_phys = (u32)eisa_adr >> 12;
692 
693     outl(0,eisa_adr+MAILBOXREG);
694     outl(0,eisa_adr+MAILBOXREG+4);
695     outl(0,eisa_adr+MAILBOXREG+8);
696     outl(0,eisa_adr+MAILBOXREG+12);
697 
698     /* detect IRQ */ 
699     if ((id = inl(eisa_adr+ID0REG)) == GDT3_ID) {
700         ha->oem_id = OEM_ID_ICP;
701         ha->type = GDT_EISA;
702         ha->stype = id;
703         outl(1,eisa_adr+MAILBOXREG+8);
704         outb(0xfe,eisa_adr+LDOORREG);
705         retries = INIT_RETRIES;
706         gdth_delay(20);
707         while (inb(eisa_adr+EDOORREG) != 0xfe) {
708             if (--retries == 0) {
709                 printk("GDT-EISA: Initialization error (get IRQ failed)\n");
710                 return 0;
711             }
712             gdth_delay(1);
713         }
714         ha->irq = inb(eisa_adr+MAILBOXREG);
715         outb(0xff,eisa_adr+EDOORREG);
716         TRACE2(("GDT3000/3020: IRQ=%d\n",ha->irq));
717         /* check the result */
718         if (ha->irq == 0) {
719                 TRACE2(("Unknown IRQ, use IRQ table from cmd line !\n"));
720                 for (i = 0, irq_found = FALSE; 
721                      i < MAXHA && irq[i] != 0xff; ++i) {
722                 if (irq[i]==10 || irq[i]==11 || irq[i]==12 || irq[i]==14) {
723                     irq_found = TRUE;
724                     break;
725                 }
726                 }
727             if (irq_found) {
728                 ha->irq = irq[i];
729                 irq[i] = 0;
730                 printk("GDT-EISA: Can not detect controller IRQ,\n");
731                 printk("Use IRQ setting from command line (IRQ = %d)\n",
732                        ha->irq);
733             } else {
734                 printk("GDT-EISA: Initialization error (unknown IRQ), Enable\n");
735                 printk("the controller BIOS or use command line parameters\n");
736                 return 0;
737             }
738         }
739     } else {
740         eisacf = inb(eisa_adr+EISAREG) & 7;
741         if (eisacf > 4)                         /* level triggered */
742             eisacf -= 4;
743         ha->irq = gdth_irq_tab[eisacf];
744         ha->oem_id = OEM_ID_ICP;
745         ha->type = GDT_EISA;
746         ha->stype = id;
747     }
748 
749     ha->dma64_support = 0;
750     return 1;
751 }
752 #endif /* CONFIG_EISA */
753 
754 #ifdef CONFIG_ISA
755 static int __init gdth_init_isa(u32 bios_adr,gdth_ha_str *ha)
756 {
757     register gdt2_dpram_str __iomem *dp2_ptr;
758     int i;
759     u8 irq_drq,prot_ver;
760     u32 retries;
761 
762     TRACE(("gdth_init_isa() bios adr. %x\n",bios_adr));
763 
764     ha->brd = ioremap(bios_adr, sizeof(gdt2_dpram_str));
765     if (ha->brd == NULL) {
766         printk("GDT-ISA: Initialization error (DPMEM remap error)\n");
767         return 0;
768     }
769     dp2_ptr = ha->brd;
770     writeb(1, &dp2_ptr->io.memlock); /* switch off write protection */
771     /* reset interface area */
772     memset_io(&dp2_ptr->u, 0, sizeof(dp2_ptr->u));
773     if (readl(&dp2_ptr->u) != 0) {
774         printk("GDT-ISA: Initialization error (DPMEM write error)\n");
775         iounmap(ha->brd);
776         return 0;
777     }
778 
779     /* disable board interrupts, read DRQ and IRQ */
780     writeb(0xff, &dp2_ptr->io.irqdel);
781     writeb(0x00, &dp2_ptr->io.irqen);
782     writeb(0x00, &dp2_ptr->u.ic.S_Status);
783     writeb(0x00, &dp2_ptr->u.ic.Cmd_Index);
784 
785     irq_drq = readb(&dp2_ptr->io.rq);
786     for (i=0; i<3; ++i) {
787         if ((irq_drq & 1)==0)
788             break;
789         irq_drq >>= 1;
790     }
791     ha->drq = gdth_drq_tab[i];
792 
793     irq_drq = readb(&dp2_ptr->io.rq) >> 3;
794     for (i=1; i<5; ++i) {
795         if ((irq_drq & 1)==0)
796             break;
797         irq_drq >>= 1;
798     }
799     ha->irq = gdth_irq_tab[i];
800 
801     /* deinitialize services */
802     writel(bios_adr, &dp2_ptr->u.ic.S_Info[0]);
803     writeb(0xff, &dp2_ptr->u.ic.S_Cmd_Indx);
804     writeb(0, &dp2_ptr->io.event);
805     retries = INIT_RETRIES;
806     gdth_delay(20);
807     while (readb(&dp2_ptr->u.ic.S_Status) != 0xff) {
808         if (--retries == 0) {
809             printk("GDT-ISA: Initialization error (DEINIT failed)\n");
810             iounmap(ha->brd);
811             return 0;
812         }
813         gdth_delay(1);
814     }
815     prot_ver = (u8)readl(&dp2_ptr->u.ic.S_Info[0]);
816     writeb(0, &dp2_ptr->u.ic.Status);
817     writeb(0xff, &dp2_ptr->io.irqdel);
818     if (prot_ver != PROTOCOL_VERSION) {
819         printk("GDT-ISA: Illegal protocol version\n");
820         iounmap(ha->brd);
821         return 0;
822     }
823 
824     ha->oem_id = OEM_ID_ICP;
825     ha->type = GDT_ISA;
826     ha->ic_all_size = sizeof(dp2_ptr->u);
827     ha->stype= GDT2_ID;
828     ha->brd_phys = bios_adr >> 4;
829 
830     /* special request to controller BIOS */
831     writel(0x00, &dp2_ptr->u.ic.S_Info[0]);
832     writel(0x00, &dp2_ptr->u.ic.S_Info[1]);
833     writel(0x01, &dp2_ptr->u.ic.S_Info[2]);
834     writel(0x00, &dp2_ptr->u.ic.S_Info[3]);
835     writeb(0xfe, &dp2_ptr->u.ic.S_Cmd_Indx);
836     writeb(0, &dp2_ptr->io.event);
837     retries = INIT_RETRIES;
838     gdth_delay(20);
839     while (readb(&dp2_ptr->u.ic.S_Status) != 0xfe) {
840         if (--retries == 0) {
841             printk("GDT-ISA: Initialization error\n");
842             iounmap(ha->brd);
843             return 0;
844         }
845         gdth_delay(1);
846     }
847     writeb(0, &dp2_ptr->u.ic.Status);
848     writeb(0xff, &dp2_ptr->io.irqdel);
849 
850     ha->dma64_support = 0;
851     return 1;
852 }
853 #endif /* CONFIG_ISA */
854 
855 #ifdef CONFIG_PCI
856 static int gdth_init_pci(struct pci_dev *pdev, gdth_pci_str *pcistr,
857                          gdth_ha_str *ha)
858 {
859     register gdt6_dpram_str __iomem *dp6_ptr;
860     register gdt6c_dpram_str __iomem *dp6c_ptr;
861     register gdt6m_dpram_str __iomem *dp6m_ptr;
862     u32 retries;
863     u8 prot_ver;
864     u16 command;
865     int i, found = FALSE;
866 
867     TRACE(("gdth_init_pci()\n"));
868 
869     if (pdev->vendor == PCI_VENDOR_ID_INTEL)
870         ha->oem_id = OEM_ID_INTEL;
871     else
872         ha->oem_id = OEM_ID_ICP;
873     ha->brd_phys = (pdev->bus->number << 8) | (pdev->devfn & 0xf8);
874     ha->stype = (u32)pdev->device;
875     ha->irq = pdev->irq;
876     ha->pdev = pdev;
877     
878     if (ha->pdev->device <= PCI_DEVICE_ID_VORTEX_GDT6000B) {  /* GDT6000/B */
879         TRACE2(("init_pci() dpmem %lx irq %d\n",pcistr->dpmem,ha->irq));
880         ha->brd = ioremap(pcistr->dpmem, sizeof(gdt6_dpram_str));
881         if (ha->brd == NULL) {
882             printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
883             return 0;
884         }
885         /* check and reset interface area */
886         dp6_ptr = ha->brd;
887         writel(DPMEM_MAGIC, &dp6_ptr->u);
888         if (readl(&dp6_ptr->u) != DPMEM_MAGIC) {
889             printk("GDT-PCI: Cannot access DPMEM at 0x%lx (shadowed?)\n", 
890                    pcistr->dpmem);
891             found = FALSE;
892             for (i = 0xC8000; i < 0xE8000; i += 0x4000) {
893                 iounmap(ha->brd);
894                 ha->brd = ioremap(i, sizeof(u16)); 
895                 if (ha->brd == NULL) {
896                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
897                     return 0;
898                 }
899                 if (readw(ha->brd) != 0xffff) {
900                     TRACE2(("init_pci_old() address 0x%x busy\n", i));
901                     continue;
902                 }
903                 iounmap(ha->brd);
904                 pci_write_config_dword(pdev, PCI_BASE_ADDRESS_0, i);
905                 ha->brd = ioremap(i, sizeof(gdt6_dpram_str)); 
906                 if (ha->brd == NULL) {
907                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
908                     return 0;
909                 }
910                 dp6_ptr = ha->brd;
911                 writel(DPMEM_MAGIC, &dp6_ptr->u);
912                 if (readl(&dp6_ptr->u) == DPMEM_MAGIC) {
913                     printk("GDT-PCI: Use free address at 0x%x\n", i);
914                     found = TRUE;
915                     break;
916                 }
917             }   
918             if (!found) {
919                 printk("GDT-PCI: No free address found!\n");
920                 iounmap(ha->brd);
921                 return 0;
922             }
923         }
924         memset_io(&dp6_ptr->u, 0, sizeof(dp6_ptr->u));
925         if (readl(&dp6_ptr->u) != 0) {
926             printk("GDT-PCI: Initialization error (DPMEM write error)\n");
927             iounmap(ha->brd);
928             return 0;
929         }
930         
931         /* disable board interrupts, deinit services */
932         writeb(0xff, &dp6_ptr->io.irqdel);
933         writeb(0x00, &dp6_ptr->io.irqen);
934         writeb(0x00, &dp6_ptr->u.ic.S_Status);
935         writeb(0x00, &dp6_ptr->u.ic.Cmd_Index);
936 
937         writel(pcistr->dpmem, &dp6_ptr->u.ic.S_Info[0]);
938         writeb(0xff, &dp6_ptr->u.ic.S_Cmd_Indx);
939         writeb(0, &dp6_ptr->io.event);
940         retries = INIT_RETRIES;
941         gdth_delay(20);
942         while (readb(&dp6_ptr->u.ic.S_Status) != 0xff) {
943             if (--retries == 0) {
944                 printk("GDT-PCI: Initialization error (DEINIT failed)\n");
945                 iounmap(ha->brd);
946                 return 0;
947             }
948             gdth_delay(1);
949         }
950         prot_ver = (u8)readl(&dp6_ptr->u.ic.S_Info[0]);
951         writeb(0, &dp6_ptr->u.ic.S_Status);
952         writeb(0xff, &dp6_ptr->io.irqdel);
953         if (prot_ver != PROTOCOL_VERSION) {
954             printk("GDT-PCI: Illegal protocol version\n");
955             iounmap(ha->brd);
956             return 0;
957         }
958 
959         ha->type = GDT_PCI;
960         ha->ic_all_size = sizeof(dp6_ptr->u);
961         
962         /* special command to controller BIOS */
963         writel(0x00, &dp6_ptr->u.ic.S_Info[0]);
964         writel(0x00, &dp6_ptr->u.ic.S_Info[1]);
965         writel(0x00, &dp6_ptr->u.ic.S_Info[2]);
966         writel(0x00, &dp6_ptr->u.ic.S_Info[3]);
967         writeb(0xfe, &dp6_ptr->u.ic.S_Cmd_Indx);
968         writeb(0, &dp6_ptr->io.event);
969         retries = INIT_RETRIES;
970         gdth_delay(20);
971         while (readb(&dp6_ptr->u.ic.S_Status) != 0xfe) {
972             if (--retries == 0) {
973                 printk("GDT-PCI: Initialization error\n");
974                 iounmap(ha->brd);
975                 return 0;
976             }
977             gdth_delay(1);
978         }
979         writeb(0, &dp6_ptr->u.ic.S_Status);
980         writeb(0xff, &dp6_ptr->io.irqdel);
981 
982         ha->dma64_support = 0;
983 
984     } else if (ha->pdev->device <= PCI_DEVICE_ID_VORTEX_GDT6555) { /* GDT6110, ... */
985         ha->plx = (gdt6c_plx_regs *)pcistr->io;
986         TRACE2(("init_pci_new() dpmem %lx irq %d\n",
987             pcistr->dpmem,ha->irq));
988         ha->brd = ioremap(pcistr->dpmem, sizeof(gdt6c_dpram_str));
989         if (ha->brd == NULL) {
990             printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
991             iounmap(ha->brd);
992             return 0;
993         }
994         /* check and reset interface area */
995         dp6c_ptr = ha->brd;
996         writel(DPMEM_MAGIC, &dp6c_ptr->u);
997         if (readl(&dp6c_ptr->u) != DPMEM_MAGIC) {
998             printk("GDT-PCI: Cannot access DPMEM at 0x%lx (shadowed?)\n", 
999                    pcistr->dpmem);
1000             found = FALSE;
1001             for (i = 0xC8000; i < 0xE8000; i += 0x4000) {
1002                 iounmap(ha->brd);
1003                 ha->brd = ioremap(i, sizeof(u16)); 
1004                 if (ha->brd == NULL) {
1005                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1006                     return 0;
1007                 }
1008                 if (readw(ha->brd) != 0xffff) {
1009                     TRACE2(("init_pci_plx() address 0x%x busy\n", i));
1010                     continue;
1011                 }
1012                 iounmap(ha->brd);
1013                 pci_write_config_dword(pdev, PCI_BASE_ADDRESS_2, i);
1014                 ha->brd = ioremap(i, sizeof(gdt6c_dpram_str)); 
1015                 if (ha->brd == NULL) {
1016                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1017                     return 0;
1018                 }
1019                 dp6c_ptr = ha->brd;
1020                 writel(DPMEM_MAGIC, &dp6c_ptr->u);
1021                 if (readl(&dp6c_ptr->u) == DPMEM_MAGIC) {
1022                     printk("GDT-PCI: Use free address at 0x%x\n", i);
1023                     found = TRUE;
1024                     break;
1025                 }
1026             }   
1027             if (!found) {
1028                 printk("GDT-PCI: No free address found!\n");
1029                 iounmap(ha->brd);
1030                 return 0;
1031             }
1032         }
1033         memset_io(&dp6c_ptr->u, 0, sizeof(dp6c_ptr->u));
1034         if (readl(&dp6c_ptr->u) != 0) {
1035             printk("GDT-PCI: Initialization error (DPMEM write error)\n");
1036             iounmap(ha->brd);
1037             return 0;
1038         }
1039         
1040         /* disable board interrupts, deinit services */
1041         outb(0x00,PTR2USHORT(&ha->plx->control1));
1042         outb(0xff,PTR2USHORT(&ha->plx->edoor_reg));
1043         
1044         writeb(0x00, &dp6c_ptr->u.ic.S_Status);
1045         writeb(0x00, &dp6c_ptr->u.ic.Cmd_Index);
1046 
1047         writel(pcistr->dpmem, &dp6c_ptr->u.ic.S_Info[0]);
1048         writeb(0xff, &dp6c_ptr->u.ic.S_Cmd_Indx);
1049 
1050         outb(1,PTR2USHORT(&ha->plx->ldoor_reg));
1051 
1052         retries = INIT_RETRIES;
1053         gdth_delay(20);
1054         while (readb(&dp6c_ptr->u.ic.S_Status) != 0xff) {
1055             if (--retries == 0) {
1056                 printk("GDT-PCI: Initialization error (DEINIT failed)\n");
1057                 iounmap(ha->brd);
1058                 return 0;
1059             }
1060             gdth_delay(1);
1061         }
1062         prot_ver = (u8)readl(&dp6c_ptr->u.ic.S_Info[0]);
1063         writeb(0, &dp6c_ptr->u.ic.Status);
1064         if (prot_ver != PROTOCOL_VERSION) {
1065             printk("GDT-PCI: Illegal protocol version\n");
1066             iounmap(ha->brd);
1067             return 0;
1068         }
1069 
1070         ha->type = GDT_PCINEW;
1071         ha->ic_all_size = sizeof(dp6c_ptr->u);
1072 
1073         /* special command to controller BIOS */
1074         writel(0x00, &dp6c_ptr->u.ic.S_Info[0]);
1075         writel(0x00, &dp6c_ptr->u.ic.S_Info[1]);
1076         writel(0x00, &dp6c_ptr->u.ic.S_Info[2]);
1077         writel(0x00, &dp6c_ptr->u.ic.S_Info[3]);
1078         writeb(0xfe, &dp6c_ptr->u.ic.S_Cmd_Indx);
1079         
1080         outb(1,PTR2USHORT(&ha->plx->ldoor_reg));
1081 
1082         retries = INIT_RETRIES;
1083         gdth_delay(20);
1084         while (readb(&dp6c_ptr->u.ic.S_Status) != 0xfe) {
1085             if (--retries == 0) {
1086                 printk("GDT-PCI: Initialization error\n");
1087                 iounmap(ha->brd);
1088                 return 0;
1089             }
1090             gdth_delay(1);
1091         }
1092         writeb(0, &dp6c_ptr->u.ic.S_Status);
1093 
1094         ha->dma64_support = 0;
1095 
1096     } else {                                            /* MPR */
1097         TRACE2(("init_pci_mpr() dpmem %lx irq %d\n",pcistr->dpmem,ha->irq));
1098         ha->brd = ioremap(pcistr->dpmem, sizeof(gdt6m_dpram_str));
1099         if (ha->brd == NULL) {
1100             printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1101             return 0;
1102         }
1103 
1104         /* manipulate config. space to enable DPMEM, start RP controller */
1105         pci_read_config_word(pdev, PCI_COMMAND, &command);
1106         command |= 6;
1107         pci_write_config_word(pdev, PCI_COMMAND, command);
1108         gdth_delay(1);
1109 
1110         dp6m_ptr = ha->brd;
1111 
1112         /* Ensure that it is safe to access the non HW portions of DPMEM.
1113          * Aditional check needed for Xscale based RAID controllers */
1114         while( ((int)readb(&dp6m_ptr->i960r.sema0_reg) ) & 3 )
1115             gdth_delay(1);
1116         
1117         /* check and reset interface area */
1118         writel(DPMEM_MAGIC, &dp6m_ptr->u);
1119         if (readl(&dp6m_ptr->u) != DPMEM_MAGIC) {
1120             printk("GDT-PCI: Cannot access DPMEM at 0x%lx (shadowed?)\n", 
1121                    pcistr->dpmem);
1122             found = FALSE;
1123             for (i = 0xC8000; i < 0xE8000; i += 0x4000) {
1124                 iounmap(ha->brd);
1125                 ha->brd = ioremap(i, sizeof(u16)); 
1126                 if (ha->brd == NULL) {
1127                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1128                     return 0;
1129                 }
1130                 if (readw(ha->brd) != 0xffff) {
1131                     TRACE2(("init_pci_mpr() address 0x%x busy\n", i));
1132                     continue;
1133                 }
1134                 iounmap(ha->brd);
1135                 pci_write_config_dword(pdev, PCI_BASE_ADDRESS_0, i);
1136                 ha->brd = ioremap(i, sizeof(gdt6m_dpram_str)); 
1137                 if (ha->brd == NULL) {
1138                     printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1139                     return 0;
1140                 }
1141                 dp6m_ptr = ha->brd;
1142                 writel(DPMEM_MAGIC, &dp6m_ptr->u);
1143                 if (readl(&dp6m_ptr->u) == DPMEM_MAGIC) {
1144                     printk("GDT-PCI: Use free address at 0x%x\n", i);
1145                     found = TRUE;
1146                     break;
1147                 }
1148             }   
1149             if (!found) {
1150                 printk("GDT-PCI: No free address found!\n");
1151                 iounmap(ha->brd);
1152                 return 0;
1153             }
1154         }
1155         memset_io(&dp6m_ptr->u, 0, sizeof(dp6m_ptr->u));
1156         
1157         /* disable board interrupts, deinit services */
1158         writeb(readb(&dp6m_ptr->i960r.edoor_en_reg) | 4,
1159                     &dp6m_ptr->i960r.edoor_en_reg);
1160         writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
1161         writeb(0x00, &dp6m_ptr->u.ic.S_Status);
1162         writeb(0x00, &dp6m_ptr->u.ic.Cmd_Index);
1163 
1164         writel(pcistr->dpmem, &dp6m_ptr->u.ic.S_Info[0]);
1165         writeb(0xff, &dp6m_ptr->u.ic.S_Cmd_Indx);
1166         writeb(1, &dp6m_ptr->i960r.ldoor_reg);
1167         retries = INIT_RETRIES;
1168         gdth_delay(20);
1169         while (readb(&dp6m_ptr->u.ic.S_Status) != 0xff) {
1170             if (--retries == 0) {
1171                 printk("GDT-PCI: Initialization error (DEINIT failed)\n");
1172                 iounmap(ha->brd);
1173                 return 0;
1174             }
1175             gdth_delay(1);
1176         }
1177         prot_ver = (u8)readl(&dp6m_ptr->u.ic.S_Info[0]);
1178         writeb(0, &dp6m_ptr->u.ic.S_Status);
1179         if (prot_ver != PROTOCOL_VERSION) {
1180             printk("GDT-PCI: Illegal protocol version\n");
1181             iounmap(ha->brd);
1182             return 0;
1183         }
1184 
1185         ha->type = GDT_PCIMPR;
1186         ha->ic_all_size = sizeof(dp6m_ptr->u);
1187         
1188         /* special command to controller BIOS */
1189         writel(0x00, &dp6m_ptr->u.ic.S_Info[0]);
1190         writel(0x00, &dp6m_ptr->u.ic.S_Info[1]);
1191         writel(0x00, &dp6m_ptr->u.ic.S_Info[2]);
1192         writel(0x00, &dp6m_ptr->u.ic.S_Info[3]);
1193         writeb(0xfe, &dp6m_ptr->u.ic.S_Cmd_Indx);
1194         writeb(1, &dp6m_ptr->i960r.ldoor_reg);
1195         retries = INIT_RETRIES;
1196         gdth_delay(20);
1197         while (readb(&dp6m_ptr->u.ic.S_Status) != 0xfe) {
1198             if (--retries == 0) {
1199                 printk("GDT-PCI: Initialization error\n");
1200                 iounmap(ha->brd);
1201                 return 0;
1202             }
1203             gdth_delay(1);
1204         }
1205         writeb(0, &dp6m_ptr->u.ic.S_Status);
1206 
1207         /* read FW version to detect 64-bit DMA support */
1208         writeb(0xfd, &dp6m_ptr->u.ic.S_Cmd_Indx);
1209         writeb(1, &dp6m_ptr->i960r.ldoor_reg);
1210         retries = INIT_RETRIES;
1211         gdth_delay(20);
1212         while (readb(&dp6m_ptr->u.ic.S_Status) != 0xfd) {
1213             if (--retries == 0) {
1214                 printk("GDT-PCI: Initialization error (DEINIT failed)\n");
1215                 iounmap(ha->brd);
1216                 return 0;
1217             }
1218             gdth_delay(1);
1219         }
1220         prot_ver = (u8)(readl(&dp6m_ptr->u.ic.S_Info[0]) >> 16);
1221         writeb(0, &dp6m_ptr->u.ic.S_Status);
1222         if (prot_ver < 0x2b)      /* FW < x.43: no 64-bit DMA support */
1223             ha->dma64_support = 0;
1224         else 
1225             ha->dma64_support = 1;
1226     }
1227 
1228     return 1;
1229 }
1230 #endif /* CONFIG_PCI */
1231 
1232 /* controller protocol functions */
1233 
1234 static void gdth_enable_int(gdth_ha_str *ha)
1235 {
1236     unsigned long flags;
1237     gdt2_dpram_str __iomem *dp2_ptr;
1238     gdt6_dpram_str __iomem *dp6_ptr;
1239     gdt6m_dpram_str __iomem *dp6m_ptr;
1240 
1241     TRACE(("gdth_enable_int() hanum %d\n",ha->hanum));
1242     spin_lock_irqsave(&ha->smp_lock, flags);
1243 
1244     if (ha->type == GDT_EISA) {
1245         outb(0xff, ha->bmic + EDOORREG);
1246         outb(0xff, ha->bmic + EDENABREG);
1247         outb(0x01, ha->bmic + EINTENABREG);
1248     } else if (ha->type == GDT_ISA) {
1249         dp2_ptr = ha->brd;
1250         writeb(1, &dp2_ptr->io.irqdel);
1251         writeb(0, &dp2_ptr->u.ic.Cmd_Index);
1252         writeb(1, &dp2_ptr->io.irqen);
1253     } else if (ha->type == GDT_PCI) {
1254         dp6_ptr = ha->brd;
1255         writeb(1, &dp6_ptr->io.irqdel);
1256         writeb(0, &dp6_ptr->u.ic.Cmd_Index);
1257         writeb(1, &dp6_ptr->io.irqen);
1258     } else if (ha->type == GDT_PCINEW) {
1259         outb(0xff, PTR2USHORT(&ha->plx->edoor_reg));
1260         outb(0x03, PTR2USHORT(&ha->plx->control1));
1261     } else if (ha->type == GDT_PCIMPR) {
1262         dp6m_ptr = ha->brd;
1263         writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
1264         writeb(readb(&dp6m_ptr->i960r.edoor_en_reg) & ~4,
1265                     &dp6m_ptr->i960r.edoor_en_reg);
1266     }
1267     spin_unlock_irqrestore(&ha->smp_lock, flags);
1268 }
1269 
1270 /* return IStatus if interrupt was from this card else 0 */
1271 static u8 gdth_get_status(gdth_ha_str *ha)
1272 {
1273     u8 IStatus = 0;
1274 
1275     TRACE(("gdth_get_status() irq %d ctr_count %d\n", ha->irq, gdth_ctr_count));
1276 
1277         if (ha->type == GDT_EISA)
1278             IStatus = inb((u16)ha->bmic + EDOORREG);
1279         else if (ha->type == GDT_ISA)
1280             IStatus =
1281                 readb(&((gdt2_dpram_str __iomem *)ha->brd)->u.ic.Cmd_Index);
1282         else if (ha->type == GDT_PCI)
1283             IStatus =
1284                 readb(&((gdt6_dpram_str __iomem *)ha->brd)->u.ic.Cmd_Index);
1285         else if (ha->type == GDT_PCINEW) 
1286             IStatus = inb(PTR2USHORT(&ha->plx->edoor_reg));
1287         else if (ha->type == GDT_PCIMPR)
1288             IStatus =
1289                 readb(&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.edoor_reg);
1290 
1291         return IStatus;
1292 }
1293 
1294 static int gdth_test_busy(gdth_ha_str *ha)
1295 {
1296     register int gdtsema0 = 0;
1297 
1298     TRACE(("gdth_test_busy() hanum %d\n", ha->hanum));
1299 
1300     if (ha->type == GDT_EISA)
1301         gdtsema0 = (int)inb(ha->bmic + SEMA0REG);
1302     else if (ha->type == GDT_ISA)
1303         gdtsema0 = (int)readb(&((gdt2_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
1304     else if (ha->type == GDT_PCI)
1305         gdtsema0 = (int)readb(&((gdt6_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
1306     else if (ha->type == GDT_PCINEW) 
1307         gdtsema0 = (int)inb(PTR2USHORT(&ha->plx->sema0_reg));
1308     else if (ha->type == GDT_PCIMPR)
1309         gdtsema0 = 
1310             (int)readb(&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.sema0_reg);
1311 
1312     return (gdtsema0 & 1);
1313 }
1314 
1315 
1316 static int gdth_get_cmd_index(gdth_ha_str *ha)
1317 {
1318     int i;
1319 
1320     TRACE(("gdth_get_cmd_index() hanum %d\n", ha->hanum));
1321 
1322     for (i=0; i<GDTH_MAXCMDS; ++i) {
1323         if (ha->cmd_tab[i].cmnd == UNUSED_CMND) {
1324             ha->cmd_tab[i].cmnd = ha->pccb->RequestBuffer;
1325             ha->cmd_tab[i].service = ha->pccb->Service;
1326             ha->pccb->CommandIndex = (u32)i+2;
1327             return (i+2);
1328         }
1329     }
1330     return 0;
1331 }
1332 
1333 
1334 static void gdth_set_sema0(gdth_ha_str *ha)
1335 {
1336     TRACE(("gdth_set_sema0() hanum %d\n", ha->hanum));
1337 
1338     if (ha->type == GDT_EISA) {
1339         outb(1, ha->bmic + SEMA0REG);
1340     } else if (ha->type == GDT_ISA) {
1341         writeb(1, &((gdt2_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
1342     } else if (ha->type == GDT_PCI) {
1343         writeb(1, &((gdt6_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
1344     } else if (ha->type == GDT_PCINEW) { 
1345         outb(1, PTR2USHORT(&ha->plx->sema0_reg));
1346     } else if (ha->type == GDT_PCIMPR) {
1347         writeb(1, &((gdt6m_dpram_str __iomem *)ha->brd)->i960r.sema0_reg);
1348     }
1349 }
1350 
1351 
1352 static void gdth_copy_command(gdth_ha_str *ha)
1353 {
1354     register gdth_cmd_str *cmd_ptr;
1355     register gdt6m_dpram_str __iomem *dp6m_ptr;
1356     register gdt6c_dpram_str __iomem *dp6c_ptr;
1357     gdt6_dpram_str __iomem *dp6_ptr;
1358     gdt2_dpram_str __iomem *dp2_ptr;
1359     u16 cp_count,dp_offset,cmd_no;
1360     
1361     TRACE(("gdth_copy_command() hanum %d\n", ha->hanum));
1362 
1363     cp_count = ha->cmd_len;
1364     dp_offset= ha->cmd_offs_dpmem;
1365     cmd_no   = ha->cmd_cnt;
1366     cmd_ptr  = ha->pccb;
1367 
1368     ++ha->cmd_cnt;                                                      
1369     if (ha->type == GDT_EISA)
1370         return;                                 /* no DPMEM, no copy */
1371 
1372     /* set cpcount dword aligned */
1373     if (cp_count & 3)
1374         cp_count += (4 - (cp_count & 3));
1375 
1376     ha->cmd_offs_dpmem += cp_count;
1377     
1378     /* set offset and service, copy command to DPMEM */
1379     if (ha->type == GDT_ISA) {
1380         dp2_ptr = ha->brd;
1381         writew(dp_offset + DPMEM_COMMAND_OFFSET,
1382                     &dp2_ptr->u.ic.comm_queue[cmd_no].offset);
1383         writew((u16)cmd_ptr->Service,
1384                     &dp2_ptr->u.ic.comm_queue[cmd_no].serv_id);
1385         memcpy_toio(&dp2_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
1386     } else if (ha->type == GDT_PCI) {
1387         dp6_ptr = ha->brd;
1388         writew(dp_offset + DPMEM_COMMAND_OFFSET,
1389                     &dp6_ptr->u.ic.comm_queue[cmd_no].offset);
1390         writew((u16)cmd_ptr->Service,
1391                     &dp6_ptr->u.ic.comm_queue[cmd_no].serv_id);
1392         memcpy_toio(&dp6_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
1393     } else if (ha->type == GDT_PCINEW) {
1394         dp6c_ptr = ha->brd;
1395         writew(dp_offset + DPMEM_COMMAND_OFFSET,
1396                     &dp6c_ptr->u.ic.comm_queue[cmd_no].offset);
1397         writew((u16)cmd_ptr->Service,
1398                     &dp6c_ptr->u.ic.comm_queue[cmd_no].serv_id);
1399         memcpy_toio(&dp6c_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
1400     } else if (ha->type == GDT_PCIMPR) {
1401         dp6m_ptr = ha->brd;
1402         writew(dp_offset + DPMEM_COMMAND_OFFSET,
1403                     &dp6m_ptr->u.ic.comm_queue[cmd_no].offset);
1404         writew((u16)cmd_ptr->Service,
1405                     &dp6m_ptr->u.ic.comm_queue[cmd_no].serv_id);
1406         memcpy_toio(&dp6m_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
1407     }
1408 }
1409 
1410 
1411 static void gdth_release_event(gdth_ha_str *ha)
1412 {
1413     TRACE(("gdth_release_event() hanum %d\n", ha->hanum));
1414 
1415 #ifdef GDTH_STATISTICS
1416     {
1417         u32 i,j;
1418         for (i=0,j=0; j<GDTH_MAXCMDS; ++j) {
1419             if (ha->cmd_tab[j].cmnd != UNUSED_CMND)
1420                 ++i;
1421         }
1422         if (max_index < i) {
1423             max_index = i;
1424             TRACE3(("GDT: max_index = %d\n",(u16)i));
1425         }
1426     }
1427 #endif
1428 
1429     if (ha->pccb->OpCode == GDT_INIT)
1430         ha->pccb->Service |= 0x80;
1431 
1432     if (ha->type == GDT_EISA) {
1433         if (ha->pccb->OpCode == GDT_INIT)               /* store DMA buffer */
1434             outl(ha->ccb_phys, ha->bmic + MAILBOXREG);
1435         outb(ha->pccb->Service, ha->bmic + LDOORREG);
1436     } else if (ha->type == GDT_ISA) {
1437         writeb(0, &((gdt2_dpram_str __iomem *)ha->brd)->io.event);
1438     } else if (ha->type == GDT_PCI) {
1439         writeb(0, &((gdt6_dpram_str __iomem *)ha->brd)->io.event);
1440     } else if (ha->type == GDT_PCINEW) { 
1441         outb(1, PTR2USHORT(&ha->plx->ldoor_reg));
1442     } else if (ha->type == GDT_PCIMPR) {
1443         writeb(1, &((gdt6m_dpram_str __iomem *)ha->brd)->i960r.ldoor_reg);
1444     }
1445 }
1446 
1447 static int gdth_wait(gdth_ha_str *ha, int index, u32 time)
1448 {
1449     int answer_found = FALSE;
1450     int wait_index = 0;
1451 
1452     TRACE(("gdth_wait() hanum %d index %d time %d\n", ha->hanum, index, time));
1453 
1454     if (index == 0)
1455         return 1;                               /* no wait required */
1456 
1457     do {
1458         __gdth_interrupt(ha, true, &wait_index);
1459         if (wait_index == index) {
1460             answer_found = TRUE;
1461             break;
1462         }
1463         gdth_delay(1);
1464     } while (--time);
1465 
1466     while (gdth_test_busy(ha))
1467         gdth_delay(0);
1468 
1469     return (answer_found);
1470 }
1471 
1472 
1473 static int gdth_internal_cmd(gdth_ha_str *ha, u8 service, u16 opcode,
1474                                             u32 p1, u64 p2, u64 p3)
1475 {
1476     register gdth_cmd_str *cmd_ptr;
1477     int retries,index;
1478 
1479     TRACE2(("gdth_internal_cmd() service %d opcode %d\n",service,opcode));
1480 
1481     cmd_ptr = ha->pccb;
1482     memset((char*)cmd_ptr,0,sizeof(gdth_cmd_str));
1483 
1484     /* make command  */
1485     for (retries = INIT_RETRIES;;) {
1486         cmd_ptr->Service          = service;
1487         cmd_ptr->RequestBuffer    = INTERNAL_CMND;
1488         if (!(index=gdth_get_cmd_index(ha))) {
1489             TRACE(("GDT: No free command index found\n"));
1490             return 0;
1491         }
1492         gdth_set_sema0(ha);
1493         cmd_ptr->OpCode           = opcode;
1494         cmd_ptr->BoardNode        = LOCALBOARD;
1495         if (service == CACHESERVICE) {
1496             if (opcode == GDT_IOCTL) {
1497                 cmd_ptr->u.ioctl.subfunc = p1;
1498                 cmd_ptr->u.ioctl.channel = (u32)p2;
1499                 cmd_ptr->u.ioctl.param_size = (u16)p3;
1500                 cmd_ptr->u.ioctl.p_param = ha->scratch_phys;
1501             } else {
1502                 if (ha->cache_feat & GDT_64BIT) {
1503                     cmd_ptr->u.cache64.DeviceNo = (u16)p1;
1504                     cmd_ptr->u.cache64.BlockNo  = p2;
1505                 } else {
1506                     cmd_ptr->u.cache.DeviceNo = (u16)p1;
1507                     cmd_ptr->u.cache.BlockNo  = (u32)p2;
1508                 }
1509             }
1510         } else if (service == SCSIRAWSERVICE) {
1511             if (ha->raw_feat & GDT_64BIT) {
1512                 cmd_ptr->u.raw64.direction  = p1;
1513                 cmd_ptr->u.raw64.bus        = (u8)p2;
1514                 cmd_ptr->u.raw64.target     = (u8)p3;
1515                 cmd_ptr->u.raw64.lun        = (u8)(p3 >> 8);
1516             } else {
1517                 cmd_ptr->u.raw.direction  = p1;
1518                 cmd_ptr->u.raw.bus        = (u8)p2;
1519                 cmd_ptr->u.raw.target     = (u8)p3;
1520                 cmd_ptr->u.raw.lun        = (u8)(p3 >> 8);
1521             }
1522         } else if (service == SCREENSERVICE) {
1523             if (opcode == GDT_REALTIME) {
1524                 *(u32 *)&cmd_ptr->u.screen.su.data[0] = p1;
1525                 *(u32 *)&cmd_ptr->u.screen.su.data[4] = (u32)p2;
1526                 *(u32 *)&cmd_ptr->u.screen.su.data[8] = (u32)p3;
1527             }
1528         }
1529         ha->cmd_len          = sizeof(gdth_cmd_str);
1530         ha->cmd_offs_dpmem   = 0;
1531         ha->cmd_cnt          = 0;
1532         gdth_copy_command(ha);
1533         gdth_release_event(ha);
1534         gdth_delay(20);
1535         if (!gdth_wait(ha, index, INIT_TIMEOUT)) {
1536             printk("GDT: Initialization error (timeout service %d)\n",service);
1537             return 0;
1538         }
1539         if (ha->status != S_BSY || --retries == 0)
1540             break;
1541         gdth_delay(1);   
1542     }   
1543     
1544     return (ha->status != S_OK ? 0:1);
1545 }
1546     
1547 
1548 /* search for devices */
1549 
1550 static int gdth_search_drives(gdth_ha_str *ha)
1551 {
1552     u16 cdev_cnt, i;
1553     int ok;
1554     u32 bus_no, drv_cnt, drv_no, j;
1555     gdth_getch_str *chn;
1556     gdth_drlist_str *drl;
1557     gdth_iochan_str *ioc;
1558     gdth_raw_iochan_str *iocr;
1559     gdth_arcdl_str *alst;
1560     gdth_alist_str *alst2;
1561     gdth_oem_str_ioctl *oemstr;
1562 #ifdef INT_COAL
1563     gdth_perf_modes *pmod;
1564 #endif
1565 
1566 #ifdef GDTH_RTC
1567     u8 rtc[12];
1568     unsigned long flags;
1569 #endif     
1570    
1571     TRACE(("gdth_search_drives() hanum %d\n", ha->hanum));
1572     ok = 0;
1573 
1574     /* initialize controller services, at first: screen service */
1575     ha->screen_feat = 0;
1576     if (!force_dma32) {
1577         ok = gdth_internal_cmd(ha, SCREENSERVICE, GDT_X_INIT_SCR, 0, 0, 0);
1578         if (ok)
1579             ha->screen_feat = GDT_64BIT;
1580     }
1581     if (force_dma32 || (!ok && ha->status == (u16)S_NOFUNC))
1582         ok = gdth_internal_cmd(ha, SCREENSERVICE, GDT_INIT, 0, 0, 0);
1583     if (!ok) {
1584         printk("GDT-HA %d: Initialization error screen service (code %d)\n",
1585                ha->hanum, ha->status);
1586         return 0;
1587     }
1588     TRACE2(("gdth_search_drives(): SCREENSERVICE initialized\n"));
1589 
1590 #ifdef GDTH_RTC
1591     /* read realtime clock info, send to controller */
1592     /* 1. wait for the falling edge of update flag */
1593     spin_lock_irqsave(&rtc_lock, flags);
1594     for (j = 0; j < 1000000; ++j)
1595         if (CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP)
1596             break;
1597     for (j = 0; j < 1000000; ++j)
1598         if (!(CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP))
1599             break;
1600     /* 2. read info */
1601     do {
1602         for (j = 0; j < 12; ++j) 
1603             rtc[j] = CMOS_READ(j);
1604     } while (rtc[0] != CMOS_READ(0));
1605     spin_unlock_irqrestore(&rtc_lock, flags);
1606     TRACE2(("gdth_search_drives(): RTC: %x/%x/%x\n",*(u32 *)&rtc[0],
1607             *(u32 *)&rtc[4], *(u32 *)&rtc[8]));
1608     /* 3. send to controller firmware */
1609     gdth_internal_cmd(ha, SCREENSERVICE, GDT_REALTIME, *(u32 *)&rtc[0],
1610                       *(u32 *)&rtc[4], *(u32 *)&rtc[8]);
1611 #endif  
1612  
1613     /* unfreeze all IOs */
1614     gdth_internal_cmd(ha, CACHESERVICE, GDT_UNFREEZE_IO, 0, 0, 0);
1615  
1616     /* initialize cache service */
1617     ha->cache_feat = 0;
1618     if (!force_dma32) {
1619         ok = gdth_internal_cmd(ha, CACHESERVICE, GDT_X_INIT_HOST, LINUX_OS,
1620                                                                          0, 0);
1621         if (ok)
1622             ha->cache_feat = GDT_64BIT;
1623     }
1624     if (force_dma32 || (!ok && ha->status == (u16)S_NOFUNC))
1625         ok = gdth_internal_cmd(ha, CACHESERVICE, GDT_INIT, LINUX_OS, 0, 0);
1626     if (!ok) {
1627         printk("GDT-HA %d: Initialization error cache service (code %d)\n",
1628                ha->hanum, ha->status);
1629         return 0;
1630     }
1631     TRACE2(("gdth_search_drives(): CACHESERVICE initialized\n"));
1632     cdev_cnt = (u16)ha->info;
1633     ha->fw_vers = ha->service;
1634 
1635 #ifdef INT_COAL
1636     if (ha->type == GDT_PCIMPR) {
1637         /* set perf. modes */
1638         pmod = (gdth_perf_modes *)ha->pscratch;
1639         pmod->version          = 1;
1640         pmod->st_mode          = 1;    /* enable one status buffer */
1641         *((u64 *)&pmod->st_buff_addr1) = ha->coal_stat_phys;
1642         pmod->st_buff_indx1    = COALINDEX;
1643         pmod->st_buff_addr2    = 0;
1644         pmod->st_buff_u_addr2  = 0;
1645         pmod->st_buff_indx2    = 0;
1646         pmod->st_buff_size     = sizeof(gdth_coal_status) * MAXOFFSETS;
1647         pmod->cmd_mode         = 0;    // disable all cmd buffers
1648         pmod->cmd_buff_addr1   = 0;
1649         pmod->cmd_buff_u_addr1 = 0;
1650         pmod->cmd_buff_indx1   = 0;
1651         pmod->cmd_buff_addr2   = 0;
1652         pmod->cmd_buff_u_addr2 = 0;
1653         pmod->cmd_buff_indx2   = 0;
1654         pmod->cmd_buff_size    = 0;
1655         pmod->reserved1        = 0;            
1656         pmod->reserved2        = 0;            
1657         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, SET_PERF_MODES,
1658                               INVALID_CHANNEL,sizeof(gdth_perf_modes))) {
1659             printk("GDT-HA %d: Interrupt coalescing activated\n", ha->hanum);
1660         }
1661     }
1662 #endif
1663 
1664     /* detect number of buses - try new IOCTL */
1665     iocr = (gdth_raw_iochan_str *)ha->pscratch;
1666     iocr->hdr.version        = 0xffffffff;
1667     iocr->hdr.list_entries   = MAXBUS;
1668     iocr->hdr.first_chan     = 0;
1669     iocr->hdr.last_chan      = MAXBUS-1;
1670     iocr->hdr.list_offset    = GDTOFFSOF(gdth_raw_iochan_str, list[0]);
1671     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, IOCHAN_RAW_DESC,
1672                           INVALID_CHANNEL,sizeof(gdth_raw_iochan_str))) {
1673         TRACE2(("IOCHAN_RAW_DESC supported!\n"));
1674         ha->bus_cnt = iocr->hdr.chan_count;
1675         for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
1676             if (iocr->list[bus_no].proc_id < MAXID)
1677                 ha->bus_id[bus_no] = iocr->list[bus_no].proc_id;
1678             else
1679                 ha->bus_id[bus_no] = 0xff;
1680         }
1681     } else {
1682         /* old method */
1683         chn = (gdth_getch_str *)ha->pscratch;
1684         for (bus_no = 0; bus_no < MAXBUS; ++bus_no) {
1685             chn->channel_no = bus_no;
1686             if (!gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1687                                    SCSI_CHAN_CNT | L_CTRL_PATTERN,
1688                                    IO_CHANNEL | INVALID_CHANNEL,
1689                                    sizeof(gdth_getch_str))) {
1690                 if (bus_no == 0) {
1691                     printk("GDT-HA %d: Error detecting channel count (0x%x)\n",
1692                            ha->hanum, ha->status);
1693                     return 0;
1694                 }
1695                 break;
1696             }
1697             if (chn->siop_id < MAXID)
1698                 ha->bus_id[bus_no] = chn->siop_id;
1699             else
1700                 ha->bus_id[bus_no] = 0xff;
1701         }       
1702         ha->bus_cnt = (u8)bus_no;
1703     }
1704     TRACE2(("gdth_search_drives() %d channels\n",ha->bus_cnt));
1705 
1706     /* read cache configuration */
1707     if (!gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, CACHE_INFO,
1708                            INVALID_CHANNEL,sizeof(gdth_cinfo_str))) {
1709         printk("GDT-HA %d: Initialization error cache service (code %d)\n",
1710                ha->hanum, ha->status);
1711         return 0;
1712     }
1713     ha->cpar = ((gdth_cinfo_str *)ha->pscratch)->cpar;
1714     TRACE2(("gdth_search_drives() cinfo: vs %x sta %d str %d dw %d b %d\n",
1715             ha->cpar.version,ha->cpar.state,ha->cpar.strategy,
1716             ha->cpar.write_back,ha->cpar.block_size));
1717 
1718     /* read board info and features */
1719     ha->more_proc = FALSE;
1720     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, BOARD_INFO,
1721                           INVALID_CHANNEL,sizeof(gdth_binfo_str))) {
1722         memcpy(&ha->binfo, (gdth_binfo_str *)ha->pscratch,
1723                sizeof(gdth_binfo_str));
1724         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, BOARD_FEATURES,
1725                               INVALID_CHANNEL,sizeof(gdth_bfeat_str))) {
1726             TRACE2(("BOARD_INFO/BOARD_FEATURES supported\n"));
1727             ha->bfeat = *(gdth_bfeat_str *)ha->pscratch;
1728             ha->more_proc = TRUE;
1729         }
1730     } else {
1731         TRACE2(("BOARD_INFO requires firmware >= 1.10/2.08\n"));
1732         strcpy(ha->binfo.type_string, gdth_ctr_name(ha));
1733     }
1734     TRACE2(("Controller name: %s\n",ha->binfo.type_string));
1735 
1736     /* read more informations */
1737     if (ha->more_proc) {
1738         /* physical drives, channel addresses */
1739         ioc = (gdth_iochan_str *)ha->pscratch;
1740         ioc->hdr.version        = 0xffffffff;
1741         ioc->hdr.list_entries   = MAXBUS;
1742         ioc->hdr.first_chan     = 0;
1743         ioc->hdr.last_chan      = MAXBUS-1;
1744         ioc->hdr.list_offset    = GDTOFFSOF(gdth_iochan_str, list[0]);
1745         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, IOCHAN_DESC,
1746                               INVALID_CHANNEL,sizeof(gdth_iochan_str))) {
1747             for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
1748                 ha->raw[bus_no].address = ioc->list[bus_no].address;
1749                 ha->raw[bus_no].local_no = ioc->list[bus_no].local_no;
1750             }
1751         } else {
1752             for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
1753                 ha->raw[bus_no].address = IO_CHANNEL;
1754                 ha->raw[bus_no].local_no = bus_no;
1755             }
1756         }
1757         for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
1758             chn = (gdth_getch_str *)ha->pscratch;
1759             chn->channel_no = ha->raw[bus_no].local_no;
1760             if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1761                                   SCSI_CHAN_CNT | L_CTRL_PATTERN,
1762                                   ha->raw[bus_no].address | INVALID_CHANNEL,
1763                                   sizeof(gdth_getch_str))) {
1764                 ha->raw[bus_no].pdev_cnt = chn->drive_cnt;
1765                 TRACE2(("Channel %d: %d phys. drives\n",
1766                         bus_no,chn->drive_cnt));
1767             }
1768             if (ha->raw[bus_no].pdev_cnt > 0) {
1769                 drl = (gdth_drlist_str *)ha->pscratch;
1770                 drl->sc_no = ha->raw[bus_no].local_no;
1771                 drl->sc_cnt = ha->raw[bus_no].pdev_cnt;
1772                 if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1773                                       SCSI_DR_LIST | L_CTRL_PATTERN,
1774                                       ha->raw[bus_no].address | INVALID_CHANNEL,
1775                                       sizeof(gdth_drlist_str))) {
1776                     for (j = 0; j < ha->raw[bus_no].pdev_cnt; ++j) 
1777                         ha->raw[bus_no].id_list[j] = drl->sc_list[j];
1778                 } else {
1779                     ha->raw[bus_no].pdev_cnt = 0;
1780                 }
1781             }
1782         }
1783 
1784         /* logical drives */
1785         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, CACHE_DRV_CNT,
1786                               INVALID_CHANNEL,sizeof(u32))) {
1787             drv_cnt = *(u32 *)ha->pscratch;
1788             if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, CACHE_DRV_LIST,
1789                                   INVALID_CHANNEL,drv_cnt * sizeof(u32))) {
1790                 for (j = 0; j < drv_cnt; ++j) {
1791                     drv_no = ((u32 *)ha->pscratch)[j];
1792                     if (drv_no < MAX_LDRIVES) {
1793                         ha->hdr[drv_no].is_logdrv = TRUE;
1794                         TRACE2(("Drive %d is log. drive\n",drv_no));
1795                     }
1796                 }
1797             }
1798             alst = (gdth_arcdl_str *)ha->pscratch;
1799             alst->entries_avail = MAX_LDRIVES;
1800             alst->first_entry = 0;
1801             alst->list_offset = GDTOFFSOF(gdth_arcdl_str, list[0]);
1802             if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1803                                   ARRAY_DRV_LIST2 | LA_CTRL_PATTERN, 
1804                                   INVALID_CHANNEL, sizeof(gdth_arcdl_str) +
1805                                   (alst->entries_avail-1) * sizeof(gdth_alist_str))) { 
1806                 for (j = 0; j < alst->entries_init; ++j) {
1807                     ha->hdr[j].is_arraydrv = alst->list[j].is_arrayd;
1808                     ha->hdr[j].is_master = alst->list[j].is_master;
1809                     ha->hdr[j].is_parity = alst->list[j].is_parity;
1810                     ha->hdr[j].is_hotfix = alst->list[j].is_hotfix;
1811                     ha->hdr[j].master_no = alst->list[j].cd_handle;
1812                 }
1813             } else if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1814                                          ARRAY_DRV_LIST | LA_CTRL_PATTERN,
1815                                          0, 35 * sizeof(gdth_alist_str))) {
1816                 for (j = 0; j < 35; ++j) {
1817                     alst2 = &((gdth_alist_str *)ha->pscratch)[j];
1818                     ha->hdr[j].is_arraydrv = alst2->is_arrayd;
1819                     ha->hdr[j].is_master = alst2->is_master;
1820                     ha->hdr[j].is_parity = alst2->is_parity;
1821                     ha->hdr[j].is_hotfix = alst2->is_hotfix;
1822                     ha->hdr[j].master_no = alst2->cd_handle;
1823                 }
1824             }
1825         }
1826     }       
1827                                   
1828     /* initialize raw service */
1829     ha->raw_feat = 0;
1830     if (!force_dma32) {
1831         ok = gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_X_INIT_RAW, 0, 0, 0);
1832         if (ok)
1833             ha->raw_feat = GDT_64BIT;
1834     }
1835     if (force_dma32 || (!ok && ha->status == (u16)S_NOFUNC))
1836         ok = gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_INIT, 0, 0, 0);
1837     if (!ok) {
1838         printk("GDT-HA %d: Initialization error raw service (code %d)\n",
1839                ha->hanum, ha->status);
1840         return 0;
1841     }
1842     TRACE2(("gdth_search_drives(): RAWSERVICE initialized\n"));
1843 
1844     /* set/get features raw service (scatter/gather) */
1845     if (gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_SET_FEAT, SCATTER_GATHER,
1846                           0, 0)) {
1847         TRACE2(("gdth_search_drives(): set features RAWSERVICE OK\n"));
1848         if (gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_GET_FEAT, 0, 0, 0)) {
1849             TRACE2(("gdth_search_dr(): get feat RAWSERVICE %d\n",
1850                     ha->info));
1851             ha->raw_feat |= (u16)ha->info;
1852         }
1853     } 
1854 
1855     /* set/get features cache service (equal to raw service) */
1856     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_SET_FEAT, 0,
1857                           SCATTER_GATHER,0)) {
1858         TRACE2(("gdth_search_drives(): set features CACHESERVICE OK\n"));
1859         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_GET_FEAT, 0, 0, 0)) {
1860             TRACE2(("gdth_search_dr(): get feat CACHESERV. %d\n",
1861                     ha->info));
1862             ha->cache_feat |= (u16)ha->info;
1863         }
1864     }
1865 
1866     /* reserve drives for raw service */
1867     if (reserve_mode != 0) {
1868         gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_RESERVE_ALL,
1869                           reserve_mode == 1 ? 1 : 3, 0, 0);
1870         TRACE2(("gdth_search_drives(): RESERVE_ALL code %d\n", 
1871                 ha->status));
1872     }
1873     for (i = 0; i < MAX_RES_ARGS; i += 4) {
1874         if (reserve_list[i] == ha->hanum && reserve_list[i+1] < ha->bus_cnt &&
1875             reserve_list[i+2] < ha->tid_cnt && reserve_list[i+3] < MAXLUN) {
1876             TRACE2(("gdth_search_drives(): reserve ha %d bus %d id %d lun %d\n",
1877                     reserve_list[i], reserve_list[i+1],
1878                     reserve_list[i+2], reserve_list[i+3]));
1879             if (!gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_RESERVE, 0,
1880                                    reserve_list[i+1], reserve_list[i+2] | 
1881                                    (reserve_list[i+3] << 8))) {
1882                 printk("GDT-HA %d: Error raw service (RESERVE, code %d)\n",
1883                        ha->hanum, ha->status);
1884              }
1885         }
1886     }
1887 
1888     /* Determine OEM string using IOCTL */
1889     oemstr = (gdth_oem_str_ioctl *)ha->pscratch;
1890     oemstr->params.ctl_version = 0x01;
1891     oemstr->params.buffer_size = sizeof(oemstr->text);
1892     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1893                           CACHE_READ_OEM_STRING_RECORD,INVALID_CHANNEL,
1894                           sizeof(gdth_oem_str_ioctl))) {
1895         TRACE2(("gdth_search_drives(): CACHE_READ_OEM_STRING_RECORD OK\n"));
1896         printk("GDT-HA %d: Vendor: %s Name: %s\n",
1897                ha->hanum, oemstr->text.oem_company_name, ha->binfo.type_string);
1898         /* Save the Host Drive inquiry data */
1899         strlcpy(ha->oem_name,oemstr->text.scsi_host_drive_inquiry_vendor_id,
1900                 sizeof(ha->oem_name));
1901     } else {
1902         /* Old method, based on PCI ID */
1903         TRACE2(("gdth_search_drives(): CACHE_READ_OEM_STRING_RECORD failed\n"));
1904         printk("GDT-HA %d: Name: %s\n",
1905                ha->hanum, ha->binfo.type_string);
1906         if (ha->oem_id == OEM_ID_INTEL)
1907             strlcpy(ha->oem_name,"Intel  ", sizeof(ha->oem_name));
1908         else
1909             strlcpy(ha->oem_name,"ICP    ", sizeof(ha->oem_name));
1910     }
1911 
1912     /* scanning for host drives */
1913     for (i = 0; i < cdev_cnt; ++i) 
1914         gdth_analyse_hdrive(ha, i);
1915     
1916     TRACE(("gdth_search_drives() OK\n"));
1917     return 1;
1918 }
1919 
1920 static int gdth_analyse_hdrive(gdth_ha_str *ha, u16 hdrive)
1921 {
1922     u32 drv_cyls;
1923     int drv_hds, drv_secs;
1924 
1925     TRACE(("gdth_analyse_hdrive() hanum %d drive %d\n", ha->hanum, hdrive));
1926     if (hdrive >= MAX_HDRIVES)
1927         return 0;
1928 
1929     if (!gdth_internal_cmd(ha, CACHESERVICE, GDT_INFO, hdrive, 0, 0))
1930         return 0;
1931     ha->hdr[hdrive].present = TRUE;
1932     ha->hdr[hdrive].size = ha->info;
1933    
1934     /* evaluate mapping (sectors per head, heads per cylinder) */
1935     ha->hdr[hdrive].size &= ~SECS32;
1936     if (ha->info2 == 0) {
1937         gdth_eval_mapping(ha->hdr[hdrive].size,&drv_cyls,&drv_hds,&drv_secs);
1938     } else {
1939         drv_hds = ha->info2 & 0xff;
1940         drv_secs = (ha->info2 >> 8) & 0xff;
1941         drv_cyls = (u32)ha->hdr[hdrive].size / drv_hds / drv_secs;
1942     }
1943     ha->hdr[hdrive].heads = (u8)drv_hds;
1944     ha->hdr[hdrive].secs  = (u8)drv_secs;
1945     /* round size */
1946     ha->hdr[hdrive].size  = drv_cyls * drv_hds * drv_secs;
1947     
1948     if (ha->cache_feat & GDT_64BIT) {
1949         if (gdth_internal_cmd(ha, CACHESERVICE, GDT_X_INFO, hdrive, 0, 0)
1950             && ha->info2 != 0) {
1951             ha->hdr[hdrive].size = ((u64)ha->info2 << 32) | ha->info;
1952         }
1953     }
1954     TRACE2(("gdth_search_dr() cdr. %d size %d hds %d scs %d\n",
1955             hdrive,ha->hdr[hdrive].size,drv_hds,drv_secs));
1956 
1957     /* get informations about device */
1958     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_DEVTYPE, hdrive, 0, 0)) {
1959         TRACE2(("gdth_search_dr() cache drive %d devtype %d\n",
1960                 hdrive,ha->info));
1961         ha->hdr[hdrive].devtype = (u16)ha->info;
1962     }
1963 
1964     /* cluster info */
1965     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_CLUST_INFO, hdrive, 0, 0)) {
1966         TRACE2(("gdth_search_dr() cache drive %d cluster info %d\n",
1967                 hdrive,ha->info));
1968         if (!shared_access)
1969             ha->hdr[hdrive].cluster_type = (u8)ha->info;
1970     }
1971 
1972     /* R/W attributes */
1973     if (gdth_internal_cmd(ha, CACHESERVICE, GDT_RW_ATTRIBS, hdrive, 0, 0)) {
1974         TRACE2(("gdth_search_dr() cache drive %d r/w attrib. %d\n",
1975                 hdrive,ha->info));
1976         ha->hdr[hdrive].rw_attribs = (u8)ha->info;
1977     }
1978 
1979     return 1;
1980 }
1981 
1982 
1983 /* command queueing/sending functions */
1984 
1985 static void gdth_putq(gdth_ha_str *ha, Scsi_Cmnd *scp, u8 priority)
1986 {
1987     struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
1988     register Scsi_Cmnd *pscp;
1989     register Scsi_Cmnd *nscp;
1990     unsigned long flags;
1991 
1992     TRACE(("gdth_putq() priority %d\n",priority));
1993     spin_lock_irqsave(&ha->smp_lock, flags);
1994 
1995     if (!cmndinfo->internal_command)
1996         cmndinfo->priority = priority;
1997 
1998     if (ha->req_first==NULL) {
1999         ha->req_first = scp;                    /* queue was empty */
2000         scp->SCp.ptr = NULL;
2001     } else {                                    /* queue not empty */
2002         pscp = ha->req_first;
2003         nscp = (Scsi_Cmnd *)pscp->SCp.ptr;
2004         /* priority: 0-highest,..,0xff-lowest */
2005         while (nscp && gdth_cmnd_priv(nscp)->priority <= priority) {
2006             pscp = nscp;
2007             nscp = (Scsi_Cmnd *)pscp->SCp.ptr;
2008         }
2009         pscp->SCp.ptr = (char *)scp;
2010         scp->SCp.ptr  = (char *)nscp;
2011     }
2012     spin_unlock_irqrestore(&ha->smp_lock, flags);
2013 
2014 #ifdef GDTH_STATISTICS
2015     flags = 0;
2016     for (nscp=ha->req_first; nscp; nscp=(Scsi_Cmnd*)nscp->SCp.ptr)
2017         ++flags;
2018     if (max_rq < flags) {
2019         max_rq = flags;
2020         TRACE3(("GDT: max_rq = %d\n",(u16)max_rq));
2021     }
2022 #endif
2023 }
2024 
2025 static void gdth_next(gdth_ha_str *ha)
2026 {
2027     register Scsi_Cmnd *pscp;
2028     register Scsi_Cmnd *nscp;
2029     u8 b, t, l, firsttime;
2030     u8 this_cmd, next_cmd;
2031     unsigned long flags = 0;
2032     int cmd_index;
2033 
2034     TRACE(("gdth_next() hanum %d\n", ha->hanum));
2035     if (!gdth_polling) 
2036         spin_lock_irqsave(&ha->smp_lock, flags);
2037 
2038     ha->cmd_cnt = ha->cmd_offs_dpmem = 0;
2039     this_cmd = firsttime = TRUE;
2040     next_cmd = gdth_polling ? FALSE:TRUE;
2041     cmd_index = 0;
2042 
2043     for (nscp = pscp = ha->req_first; nscp; nscp = (Scsi_Cmnd *)nscp->SCp.ptr) {
2044         struct gdth_cmndinfo *nscp_cmndinfo = gdth_cmnd_priv(nscp);
2045         if (nscp != pscp && nscp != (Scsi_Cmnd *)pscp->SCp.ptr)
2046             pscp = (Scsi_Cmnd *)pscp->SCp.ptr;
2047         if (!nscp_cmndinfo->internal_command) {
2048             b = nscp->device->channel;
2049             t = nscp->device->id;
2050             l = nscp->device->lun;
2051             if (nscp_cmndinfo->priority >= DEFAULT_PRI) {
2052                 if ((b != ha->virt_bus && ha->raw[BUS_L2P(ha,b)].lock) ||
2053                     (b == ha->virt_bus && t < MAX_HDRIVES && ha->hdr[t].lock))
2054                     continue;
2055             }
2056         } else
2057             b = t = l = 0;
2058 
2059         if (firsttime) {
2060             if (gdth_test_busy(ha)) {        /* controller busy ? */
2061                 TRACE(("gdth_next() controller %d busy !\n", ha->hanum));
2062                 if (!gdth_polling) {
2063                     spin_unlock_irqrestore(&ha->smp_lock, flags);
2064                     return;
2065                 }
2066                 while (gdth_test_busy(ha))
2067                     gdth_delay(1);
2068             }   
2069             firsttime = FALSE;
2070         }
2071 
2072         if (!nscp_cmndinfo->internal_command) {
2073         if (nscp_cmndinfo->phase == -1) {
2074             nscp_cmndinfo->phase = CACHESERVICE;           /* default: cache svc. */
2075             if (nscp->cmnd[0] == TEST_UNIT_READY) {
2076                 TRACE2(("TEST_UNIT_READY Bus %d Id %d LUN %d\n", 
2077                         b, t, l));
2078                 /* TEST_UNIT_READY -> set scan mode */
2079                 if ((ha->scan_mode & 0x0f) == 0) {
2080                     if (b == 0 && t == 0 && l == 0) {
2081                         ha->scan_mode |= 1;
2082                         TRACE2(("Scan mode: 0x%x\n", ha->scan_mode));
2083                     }
2084                 } else if ((ha->scan_mode & 0x0f) == 1) {
2085                     if (b == 0 && ((t == 0 && l == 1) ||
2086                          (t == 1 && l == 0))) {
2087                         nscp_cmndinfo->OpCode = GDT_SCAN_START;
2088                         nscp_cmndinfo->phase = ((ha->scan_mode & 0x10 ? 1:0) << 8)
2089                             | SCSIRAWSERVICE;
2090                         ha->scan_mode = 0x12;
2091                         TRACE2(("Scan mode: 0x%x (SCAN_START)\n", 
2092                                 ha->scan_mode));
2093                     } else {
2094                         ha->scan_mode &= 0x10;
2095                         TRACE2(("Scan mode: 0x%x\n", ha->scan_mode));
2096                     }                   
2097                 } else if (ha->scan_mode == 0x12) {
2098                     if (b == ha->bus_cnt && t == ha->tid_cnt-1) {
2099                         nscp_cmndinfo->phase = SCSIRAWSERVICE;
2100                         nscp_cmndinfo->OpCode = GDT_SCAN_END;
2101                         ha->scan_mode &= 0x10;
2102                         TRACE2(("Scan mode: 0x%x (SCAN_END)\n", 
2103                                 ha->scan_mode));
2104                     }
2105                 }
2106             }
2107             if (b == ha->virt_bus && nscp->cmnd[0] != INQUIRY &&
2108                 nscp->cmnd[0] != READ_CAPACITY && nscp->cmnd[0] != MODE_SENSE &&
2109                 (ha->hdr[t].cluster_type & CLUSTER_DRIVE)) {
2110                 /* always GDT_CLUST_INFO! */
2111                 nscp_cmndinfo->OpCode = GDT_CLUST_INFO;
2112             }
2113         }
2114         }
2115 
2116         if (nscp_cmndinfo->OpCode != -1) {
2117             if ((nscp_cmndinfo->phase & 0xff) == CACHESERVICE) {
2118                 if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
2119                     this_cmd = FALSE;
2120                 next_cmd = FALSE;
2121             } else if ((nscp_cmndinfo->phase & 0xff) == SCSIRAWSERVICE) {
2122                 if (!(cmd_index=gdth_fill_raw_cmd(ha, nscp, BUS_L2P(ha, b))))
2123                     this_cmd = FALSE;
2124                 next_cmd = FALSE;
2125             } else {
2126                 memset((char*)nscp->sense_buffer,0,16);
2127                 nscp->sense_buffer[0] = 0x70;
2128                 nscp->sense_buffer[2] = NOT_READY;
2129                 nscp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
2130                 if (!nscp_cmndinfo->wait_for_completion)
2131                     nscp_cmndinfo->wait_for_completion++;
2132                 else
2133                     gdth_scsi_done(nscp);
2134             }
2135         } else if (gdth_cmnd_priv(nscp)->internal_command) {
2136             if (!(cmd_index=gdth_special_cmd(ha, nscp)))
2137                 this_cmd = FALSE;
2138             next_cmd = FALSE;
2139         } else if (b != ha->virt_bus) {
2140             if (ha->raw[BUS_L2P(ha,b)].io_cnt[t] >= GDTH_MAX_RAW ||
2141                 !(cmd_index=gdth_fill_raw_cmd(ha, nscp, BUS_L2P(ha, b))))
2142                 this_cmd = FALSE;
2143             else 
2144                 ha->raw[BUS_L2P(ha,b)].io_cnt[t]++;
2145         } else if (t >= MAX_HDRIVES || !ha->hdr[t].present || l != 0) {
2146             TRACE2(("Command 0x%x to bus %d id %d lun %d -> IGNORE\n",
2147                     nscp->cmnd[0], b, t, l));
2148             nscp->result = DID_BAD_TARGET << 16;
2149             if (!nscp_cmndinfo->wait_for_completion)
2150                 nscp_cmndinfo->wait_for_completion++;
2151             else
2152                 gdth_scsi_done(nscp);
2153         } else {
2154             switch (nscp->cmnd[0]) {
2155               case TEST_UNIT_READY:
2156               case INQUIRY:
2157               case REQUEST_SENSE:
2158               case READ_CAPACITY:
2159               case VERIFY:
2160               case START_STOP:
2161               case MODE_SENSE:
2162               case SERVICE_ACTION_IN:
2163                 TRACE(("cache cmd %x/%x/%x/%x/%x/%x\n",nscp->cmnd[0],
2164                        nscp->cmnd[1],nscp->cmnd[2],nscp->cmnd[3],
2165                        nscp->cmnd[4],nscp->cmnd[5]));
2166                 if (ha->hdr[t].media_changed && nscp->cmnd[0] != INQUIRY) {
2167                     /* return UNIT_ATTENTION */
2168                     TRACE2(("cmd 0x%x target %d: UNIT_ATTENTION\n",
2169                              nscp->cmnd[0], t));
2170                     ha->hdr[t].media_changed = FALSE;
2171                     memset((char*)nscp->sense_buffer,0,16);
2172                     nscp->sense_buffer[0] = 0x70;
2173                     nscp->sense_buffer[2] = UNIT_ATTENTION;
2174                     nscp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
2175                     if (!nscp_cmndinfo->wait_for_completion)
2176                         nscp_cmndinfo->wait_for_completion++;
2177                     else
2178                         gdth_scsi_done(nscp);
2179                 } else if (gdth_internal_cache_cmd(ha, nscp))
2180                     gdth_scsi_done(nscp);
2181                 break;
2182 
2183               case ALLOW_MEDIUM_REMOVAL:
2184                 TRACE(("cache cmd %x/%x/%x/%x/%x/%x\n",nscp->cmnd[0],
2185                        nscp->cmnd[1],nscp->cmnd[2],nscp->cmnd[3],
2186                        nscp->cmnd[4],nscp->cmnd[5]));
2187                 if ( (nscp->cmnd[4]&1) && !(ha->hdr[t].devtype&1) ) {
2188                     TRACE(("Prevent r. nonremov. drive->do nothing\n"));
2189                     nscp->result = DID_OK << 16;
2190                     nscp->sense_buffer[0] = 0;
2191                     if (!nscp_cmndinfo->wait_for_completion)
2192                         nscp_cmndinfo->wait_for_completion++;
2193                     else
2194                         gdth_scsi_done(nscp);
2195                 } else {
2196                     nscp->cmnd[3] = (ha->hdr[t].devtype&1) ? 1:0;
2197                     TRACE(("Prevent/allow r. %d rem. drive %d\n",
2198                            nscp->cmnd[4],nscp->cmnd[3]));
2199                     if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
2200                         this_cmd = FALSE;
2201                 }
2202                 break;
2203                 
2204               case RESERVE:
2205               case RELEASE:
2206                 TRACE2(("cache cmd %s\n",nscp->cmnd[0] == RESERVE ?
2207                         "RESERVE" : "RELEASE"));
2208                 if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
2209                     this_cmd = FALSE;
2210                 break;
2211                 
2212               case READ_6:
2213               case WRITE_6:
2214               case READ_10:
2215               case WRITE_10:
2216               case READ_16:
2217               case WRITE_16:
2218                 if (ha->hdr[t].media_changed) {
2219                     /* return UNIT_ATTENTION */
2220                     TRACE2(("cmd 0x%x target %d: UNIT_ATTENTION\n",
2221                              nscp->cmnd[0], t));
2222                     ha->hdr[t].media_changed = FALSE;
2223                     memset((char*)nscp->sense_buffer,0,16);
2224                     nscp->sense_buffer[0] = 0x70;
2225                     nscp->sense_buffer[2] = UNIT_ATTENTION;
2226                     nscp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
2227                     if (!nscp_cmndinfo->wait_for_completion)
2228                         nscp_cmndinfo->wait_for_completion++;
2229                     else
2230                         gdth_scsi_done(nscp);
2231                 } else if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
2232                     this_cmd = FALSE;
2233                 break;
2234 
2235               default:
2236                 TRACE2(("cache cmd %x/%x/%x/%x/%x/%x unknown\n",nscp->cmnd[0],
2237                         nscp->cmnd[1],nscp->cmnd[2],nscp->cmnd[3],
2238                         nscp->cmnd[4],nscp->cmnd[5]));
2239                 printk("GDT-HA %d: Unknown SCSI command 0x%x to cache service !\n",
2240                        ha->hanum, nscp->cmnd[0]);
2241                 nscp->result = DID_ABORT << 16;
2242                 if (!nscp_cmndinfo->wait_for_completion)
2243                     nscp_cmndinfo->wait_for_completion++;
2244                 else
2245                     gdth_scsi_done(nscp);
2246                 break;
2247             }
2248         }
2249 
2250         if (!this_cmd)
2251             break;
2252         if (nscp == ha->req_first)
2253             ha->req_first = pscp = (Scsi_Cmnd *)nscp->SCp.ptr;
2254         else
2255             pscp->SCp.ptr = nscp->SCp.ptr;
2256         if (!next_cmd)
2257             break;
2258     }
2259 
2260     if (ha->cmd_cnt > 0) {
2261         gdth_release_event(ha);
2262     }
2263 
2264     if (!gdth_polling) 
2265         spin_unlock_irqrestore(&ha->smp_lock, flags);
2266 
2267     if (gdth_polling && ha->cmd_cnt > 0) {
2268         if (!gdth_wait(ha, cmd_index, POLL_TIMEOUT))
2269             printk("GDT-HA %d: Command %d timed out !\n",
2270                    ha->hanum, cmd_index);
2271     }
2272 }
2273 
2274 /*
2275  * gdth_copy_internal_data() - copy to/from a buffer onto a scsi_cmnd's
2276  * buffers, kmap_atomic() as needed.
2277  */
2278 static void gdth_copy_internal_data(gdth_ha_str *ha, Scsi_Cmnd *scp,
2279                                     char *buffer, u16 count)
2280 {
2281     u16 cpcount,i, max_sg = scsi_sg_count(scp);
2282     u16 cpsum,cpnow;
2283     struct scatterlist *sl;
2284     char *address;
2285 
2286     cpcount = min_t(u16, count, scsi_bufflen(scp));
2287 
2288     if (cpcount) {
2289         cpsum=0;
2290         scsi_for_each_sg(scp, sl, max_sg, i) {
2291             unsigned long flags;
2292             cpnow = (u16)sl->length;
2293             TRACE(("copy_internal() now %d sum %d count %d %d\n",
2294                           cpnow, cpsum, cpcount, scsi_bufflen(scp)));
2295             if (cpsum+cpnow > cpcount) 
2296                 cpnow = cpcount - cpsum;
2297             cpsum += cpnow;
2298             if (!sg_page(sl)) {
2299                 printk("GDT-HA %d: invalid sc/gt element in gdth_copy_internal_data()\n",
2300                        ha->hanum);
2301                 return;
2302             }
2303             local_irq_save(flags);
2304             address = kmap_atomic(sg_page(sl)) + sl->offset;
2305             memcpy(address, buffer, cpnow);
2306             flush_dcache_page(sg_page(sl));
2307             kunmap_atomic(address);
2308             local_irq_restore(flags);
2309             if (cpsum == cpcount)
2310                 break;
2311             buffer += cpnow;
2312         }
2313     } else if (count) {
2314         printk("GDT-HA %d: SCSI command with no buffers but data transfer expected!\n",
2315                ha->hanum);
2316         WARN_ON(1);
2317     }
2318 }
2319 
2320 static int gdth_internal_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp)
2321 {
2322     u8 t;
2323     gdth_inq_data inq;
2324     gdth_rdcap_data rdc;
2325     gdth_sense_data sd;
2326     gdth_modep_data mpd;
2327     struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
2328 
2329     t  = scp->device->id;
2330     TRACE(("gdth_internal_cache_cmd() cmd 0x%x hdrive %d\n",
2331            scp->cmnd[0],t));
2332 
2333     scp->result = DID_OK << 16;
2334     scp->sense_buffer[0] = 0;
2335 
2336     switch (scp->cmnd[0]) {
2337       case TEST_UNIT_READY:
2338       case VERIFY:
2339       case START_STOP:
2340         TRACE2(("Test/Verify/Start hdrive %d\n",t));
2341         break;
2342 
2343       case INQUIRY:
2344         TRACE2(("Inquiry hdrive %d devtype %d\n",
2345                 t,ha->hdr[t].devtype));
2346         inq.type_qual = (ha->hdr[t].devtype&4) ? TYPE_ROM:TYPE_DISK;
2347         /* you can here set all disks to removable, if you want to do
2348            a flush using the ALLOW_MEDIUM_REMOVAL command */
2349         inq.modif_rmb = 0x00;
2350         if ((ha->hdr[t].devtype & 1) ||
2351             (ha->hdr[t].cluster_type & CLUSTER_DRIVE))
2352             inq.modif_rmb = 0x80;
2353         inq.version   = 2;
2354         inq.resp_aenc = 2;
2355         inq.add_length= 32;
2356         strcpy(inq.vendor,ha->oem_name);
2357         sprintf(inq.product,"Host Drive  #%02d",t);
2358         strcpy(inq.revision,"   ");
2359         gdth_copy_internal_data(ha, scp, (char*)&inq, sizeof(gdth_inq_data));
2360         break;
2361 
2362       case REQUEST_SENSE:
2363         TRACE2(("Request sense hdrive %d\n",t));
2364         sd.errorcode = 0x70;
2365         sd.segno     = 0x00;
2366         sd.key       = NO_SENSE;
2367         sd.info      = 0;
2368         sd.add_length= 0;
2369         gdth_copy_internal_data(ha, scp, (char*)&sd, sizeof(gdth_sense_data));
2370         break;
2371 
2372       case MODE_SENSE:
2373         TRACE2(("Mode sense hdrive %d\n",t));
2374         memset((char*)&mpd,0,sizeof(gdth_modep_data));
2375         mpd.hd.data_length = sizeof(gdth_modep_data);
2376         mpd.hd.dev_par     = (ha->hdr[t].devtype&2) ? 0x80:0;
2377         mpd.hd.bd_length   = sizeof(mpd.bd);
2378         mpd.bd.block_length[0] = (SECTOR_SIZE & 0x00ff0000) >> 16;
2379         mpd.bd.block_length[1] = (SECTOR_SIZE & 0x0000ff00) >> 8;
2380         mpd.bd.block_length[2] = (SECTOR_SIZE & 0x000000ff);
2381         gdth_copy_internal_data(ha, scp, (char*)&mpd, sizeof(gdth_modep_data));
2382         break;
2383 
2384       case READ_CAPACITY:
2385         TRACE2(("Read capacity hdrive %d\n",t));
2386         if (ha->hdr[t].size > (u64)0xffffffff)
2387             rdc.last_block_no = 0xffffffff;
2388         else
2389             rdc.last_block_no = cpu_to_be32(ha->hdr[t].size-1);
2390         rdc.block_length  = cpu_to_be32(SECTOR_SIZE);
2391         gdth_copy_internal_data(ha, scp, (char*)&rdc, sizeof(gdth_rdcap_data));
2392         break;
2393 
2394       case SERVICE_ACTION_IN:
2395         if ((scp->cmnd[1] & 0x1f) == SAI_READ_CAPACITY_16 &&
2396             (ha->cache_feat & GDT_64BIT)) {
2397             gdth_rdcap16_data rdc16;
2398 
2399             TRACE2(("Read capacity (16) hdrive %d\n",t));
2400             rdc16.last_block_no = cpu_to_be64(ha->hdr[t].size-1);
2401             rdc16.block_length  = cpu_to_be32(SECTOR_SIZE);
2402             gdth_copy_internal_data(ha, scp, (char*)&rdc16,
2403                                                  sizeof(gdth_rdcap16_data));
2404         } else { 
2405             scp->result = DID_ABORT << 16;
2406         }
2407         break;
2408 
2409       default:
2410         TRACE2(("Internal cache cmd 0x%x unknown\n",scp->cmnd[0]));
2411         break;
2412     }
2413 
2414     if (!cmndinfo->wait_for_completion)
2415         cmndinfo->wait_for_completion++;
2416     else 
2417         return 1;
2418 
2419     return 0;
2420 }
2421 
2422 static int gdth_fill_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, u16 hdrive)
2423 {
2424     register gdth_cmd_str *cmdp;
2425     struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
2426     u32 cnt, blockcnt;
2427     u64 no, blockno;
2428     int i, cmd_index, read_write, sgcnt, mode64;
2429 
2430     cmdp = ha->pccb;
2431     TRACE(("gdth_fill_cache_cmd() cmd 0x%x cmdsize %d hdrive %d\n",
2432                  scp->cmnd[0],scp->cmd_len,hdrive));
2433 
2434     if (ha->type==GDT_EISA && ha->cmd_cnt>0) 
2435         return 0;
2436 
2437     mode64 = (ha->cache_feat & GDT_64BIT) ? TRUE : FALSE;
2438     /* test for READ_16, WRITE_16 if !mode64 ? ---
2439        not required, should not occur due to error return on 
2440        READ_CAPACITY_16 */
2441 
2442     cmdp->Service = CACHESERVICE;
2443     cmdp->RequestBuffer = scp;
2444     /* search free command index */
2445     if (!(cmd_index=gdth_get_cmd_index(ha))) {
2446         TRACE(("GDT: No free command index found\n"));
2447         return 0;
2448     }
2449     /* if it's the first command, set command semaphore */
2450     if (ha->cmd_cnt == 0)
2451         gdth_set_sema0(ha);
2452 
2453     /* fill command */
2454     read_write = 0;
2455     if (cmndinfo->OpCode != -1)
2456         cmdp->OpCode = cmndinfo->OpCode;   /* special cache cmd. */
2457     else if (scp->cmnd[0] == RESERVE) 
2458         cmdp->OpCode = GDT_RESERVE_DRV;
2459     else if (scp->cmnd[0] == RELEASE)
2460         cmdp->OpCode = GDT_RELEASE_DRV;
2461     else if (scp->cmnd[0] == ALLOW_MEDIUM_REMOVAL) {
2462         if (scp->cmnd[4] & 1)                   /* prevent ? */
2463             cmdp->OpCode = GDT_MOUNT;
2464         else if (scp->cmnd[3] & 1)              /* removable drive ? */
2465             cmdp->OpCode = GDT_UNMOUNT;
2466         else
2467             cmdp->OpCode = GDT_FLUSH;
2468     } else if (scp->cmnd[0] == WRITE_6 || scp->cmnd[0] == WRITE_10 ||
2469                scp->cmnd[0] == WRITE_12 || scp->cmnd[0] == WRITE_16
2470     ) {
2471         read_write = 1;
2472         if (gdth_write_through || ((ha->hdr[hdrive].rw_attribs & 1) && 
2473                                    (ha->cache_feat & GDT_WR_THROUGH)))
2474             cmdp->OpCode = GDT_WRITE_THR;
2475         else
2476             cmdp->OpCode = GDT_WRITE;
2477     } else {
2478         read_write = 2;
2479         cmdp->OpCode = GDT_READ;
2480     }
2481 
2482     cmdp->BoardNode = LOCALBOARD;
2483     if (mode64) {
2484         cmdp->u.cache64.DeviceNo = hdrive;
2485         cmdp->u.cache64.BlockNo  = 1;
2486         cmdp->u.cache64.sg_canz  = 0;
2487     } else {
2488         cmdp->u.cache.DeviceNo = hdrive;
2489         cmdp->u.cache.BlockNo  = 1;
2490         cmdp->u.cache.sg_canz  = 0;
2491     }
2492 
2493     if (read_write) {
2494         if (scp->cmd_len == 16) {
2495             memcpy(&no, &scp->cmnd[2], sizeof(u64));
2496             blockno = be64_to_cpu(no);
2497             memcpy(&cnt, &scp->cmnd[10], sizeof(u32));
2498             blockcnt = be32_to_cpu(cnt);
2499         } else if (scp->cmd_len == 10) {
2500             memcpy(&no, &scp->cmnd[2], sizeof(u32));
2501             blockno = be32_to_cpu(no);
2502             memcpy(&cnt, &scp->cmnd[7], sizeof(u16));
2503             blockcnt = be16_to_cpu(cnt);
2504         } else {
2505             memcpy(&no, &scp->cmnd[0], sizeof(u32));
2506             blockno = be32_to_cpu(no) & 0x001fffffUL;
2507             blockcnt= scp->cmnd[4]==0 ? 0x100 : scp->cmnd[4];
2508         }
2509         if (mode64) {
2510             cmdp->u.cache64.BlockNo = blockno;
2511             cmdp->u.cache64.BlockCnt = blockcnt;
2512         } else {
2513             cmdp->u.cache.BlockNo = (u32)blockno;
2514             cmdp->u.cache.BlockCnt = blockcnt;
2515         }
2516 
2517         if (scsi_bufflen(scp)) {
2518             cmndinfo->dma_dir = (read_write == 1 ?
2519                 PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE);   
2520             sgcnt = pci_map_sg(ha->pdev, scsi_sglist(scp), scsi_sg_count(scp),
2521                                cmndinfo->dma_dir);
2522             if (mode64) {
2523                 struct scatterlist *sl;
2524 
2525                 cmdp->u.cache64.DestAddr= (u64)-1;
2526                 cmdp->u.cache64.sg_canz = sgcnt;
2527                 scsi_for_each_sg(scp, sl, sgcnt, i) {
2528                     cmdp->u.cache64.sg_lst[i].sg_ptr = sg_dma_address(sl);
2529 #ifdef GDTH_DMA_STATISTICS
2530                     if (cmdp->u.cache64.sg_lst[i].sg_ptr > (u64)0xffffffff)
2531                         ha->dma64_cnt++;
2532                     else
2533                         ha->dma32_cnt++;
2534 #endif
2535                     cmdp->u.cache64.sg_lst[i].sg_len = sg_dma_len(sl);
2536                 }
2537             } else {
2538                 struct scatterlist *sl;
2539 
2540                 cmdp->u.cache.DestAddr= 0xffffffff;
2541                 cmdp->u.cache.sg_canz = sgcnt;
2542                 scsi_for_each_sg(scp, sl, sgcnt, i) {
2543                     cmdp->u.cache.sg_lst[i].sg_ptr = sg_dma_address(sl);
2544 #ifdef GDTH_DMA_STATISTICS
2545                     ha->dma32_cnt++;
2546 #endif
2547                     cmdp->u.cache.sg_lst[i].sg_len = sg_dma_len(sl);
2548                 }
2549             }
2550 
2551 #ifdef GDTH_STATISTICS
2552             if (max_sg < (u32)sgcnt) {
2553                 max_sg = (u32)sgcnt;
2554                 TRACE3(("GDT: max_sg = %d\n",max_sg));
2555             }
2556 #endif
2557 
2558         }
2559     }
2560     /* evaluate command size, check space */
2561     if (mode64) {
2562         TRACE(("cache cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
2563                cmdp->u.cache64.DestAddr,cmdp->u.cache64.sg_canz,
2564                cmdp->u.cache64.sg_lst[0].sg_ptr,
2565                cmdp->u.cache64.sg_lst[0].sg_len));
2566         TRACE(("cache cmd: cmd %d blockno. %d, blockcnt %d\n",
2567                cmdp->OpCode,cmdp->u.cache64.BlockNo,cmdp->u.cache64.BlockCnt));
2568         ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.cache64.sg_lst) +
2569             (u16)cmdp->u.cache64.sg_canz * sizeof(gdth_sg64_str);
2570     } else {
2571         TRACE(("cache cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
2572                cmdp->u.cache.DestAddr,cmdp->u.cache.sg_canz,
2573                cmdp->u.cache.sg_lst[0].sg_ptr,
2574                cmdp->u.cache.sg_lst[0].sg_len));
2575         TRACE(("cache cmd: cmd %d blockno. %d, blockcnt %d\n",
2576                cmdp->OpCode,cmdp->u.cache.BlockNo,cmdp->u.cache.BlockCnt));
2577         ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.cache.sg_lst) +
2578             (u16)cmdp->u.cache.sg_canz * sizeof(gdth_sg_str);
2579     }
2580     if (ha->cmd_len & 3)
2581         ha->cmd_len += (4 - (ha->cmd_len & 3));
2582 
2583     if (ha->cmd_cnt > 0) {
2584         if ((ha->cmd_offs_dpmem + ha->cmd_len + DPMEM_COMMAND_OFFSET) >
2585             ha->ic_all_size) {
2586             TRACE2(("gdth_fill_cache() DPMEM overflow\n"));
2587             ha->cmd_tab[cmd_index-2].cmnd = UNUSED_CMND;
2588             return 0;
2589         }
2590     }
2591 
2592     /* copy command */
2593     gdth_copy_command(ha);
2594     return cmd_index;
2595 }
2596 
2597 static int gdth_fill_raw_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, u8 b)
2598 {
2599     register gdth_cmd_str *cmdp;
2600     u16 i;
2601     dma_addr_t sense_paddr;
2602     int cmd_index, sgcnt, mode64;
2603     u8 t,l;
2604     struct page *page;
2605     unsigned long offset;
2606     struct gdth_cmndinfo *cmndinfo;
2607 
2608     t = scp->device->id;
2609     l = scp->device->lun;
2610     cmdp = ha->pccb;
2611     TRACE(("gdth_fill_raw_cmd() cmd 0x%x bus %d ID %d LUN %d\n",
2612            scp->cmnd[0],b,t,l));
2613 
2614     if (ha->type==GDT_EISA && ha->cmd_cnt>0) 
2615         return 0;
2616 
2617     mode64 = (ha->raw_feat & GDT_64BIT) ? TRUE : FALSE;
2618 
2619     cmdp->Service = SCSIRAWSERVICE;
2620     cmdp->RequestBuffer = scp;
2621     /* search free command index */
2622     if (!(cmd_index=gdth_get_cmd_index(ha))) {
2623         TRACE(("GDT: No free command index found\n"));
2624         return 0;
2625     }
2626     /* if it's the first command, set command semaphore */
2627     if (ha->cmd_cnt == 0)
2628         gdth_set_sema0(ha);
2629 
2630     cmndinfo = gdth_cmnd_priv(scp);
2631     /* fill command */  
2632     if (cmndinfo->OpCode != -1) {
2633         cmdp->OpCode           = cmndinfo->OpCode; /* special raw cmd. */
2634         cmdp->BoardNode        = LOCALBOARD;
2635         if (mode64) {
2636             cmdp->u.raw64.direction = (cmndinfo->phase >> 8);
2637             TRACE2(("special raw cmd 0x%x param 0x%x\n", 
2638                     cmdp->OpCode, cmdp->u.raw64.direction));
2639             /* evaluate command size */
2640             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw64.sg_lst);
2641         } else {
2642             cmdp->u.raw.direction  = (cmndinfo->phase >> 8);
2643             TRACE2(("special raw cmd 0x%x param 0x%x\n", 
2644                     cmdp->OpCode, cmdp->u.raw.direction));
2645             /* evaluate command size */
2646             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw.sg_lst);
2647         }
2648 
2649     } else {
2650         page = virt_to_page(scp->sense_buffer);
2651         offset = (unsigned long)scp->sense_buffer & ~PAGE_MASK;
2652         sense_paddr = pci_map_page(ha->pdev,page,offset,
2653                                    16,PCI_DMA_FROMDEVICE);
2654 
2655         cmndinfo->sense_paddr  = sense_paddr;
2656         cmdp->OpCode           = GDT_WRITE;             /* always */
2657         cmdp->BoardNode        = LOCALBOARD;
2658         if (mode64) { 
2659             cmdp->u.raw64.reserved   = 0;
2660             cmdp->u.raw64.mdisc_time = 0;
2661             cmdp->u.raw64.mcon_time  = 0;
2662             cmdp->u.raw64.clen       = scp->cmd_len;
2663             cmdp->u.raw64.target     = t;
2664             cmdp->u.raw64.lun        = l;
2665             cmdp->u.raw64.bus        = b;
2666             cmdp->u.raw64.priority   = 0;
2667             cmdp->u.raw64.sdlen      = scsi_bufflen(scp);
2668             cmdp->u.raw64.sense_len  = 16;
2669             cmdp->u.raw64.sense_data = sense_paddr;
2670             cmdp->u.raw64.direction  = 
2671                 gdth_direction_tab[scp->cmnd[0]]==DOU ? GDTH_DATA_OUT:GDTH_DATA_IN;
2672             memcpy(cmdp->u.raw64.cmd,scp->cmnd,16);
2673             cmdp->u.raw64.sg_ranz    = 0;
2674         } else {
2675             cmdp->u.raw.reserved   = 0;
2676             cmdp->u.raw.mdisc_time = 0;
2677             cmdp->u.raw.mcon_time  = 0;
2678             cmdp->u.raw.clen       = scp->cmd_len;
2679             cmdp->u.raw.target     = t;
2680             cmdp->u.raw.lun        = l;
2681             cmdp->u.raw.bus        = b;
2682             cmdp->u.raw.priority   = 0;
2683             cmdp->u.raw.link_p     = 0;
2684             cmdp->u.raw.sdlen      = scsi_bufflen(scp);
2685             cmdp->u.raw.sense_len  = 16;
2686             cmdp->u.raw.sense_data = sense_paddr;
2687             cmdp->u.raw.direction  = 
2688                 gdth_direction_tab[scp->cmnd[0]]==DOU ? GDTH_DATA_OUT:GDTH_DATA_IN;
2689             memcpy(cmdp->u.raw.cmd,scp->cmnd,12);
2690             cmdp->u.raw.sg_ranz    = 0;
2691         }
2692 
2693         if (scsi_bufflen(scp)) {
2694             cmndinfo->dma_dir = PCI_DMA_BIDIRECTIONAL;
2695             sgcnt = pci_map_sg(ha->pdev, scsi_sglist(scp), scsi_sg_count(scp),
2696                                cmndinfo->dma_dir);
2697             if (mode64) {
2698                 struct scatterlist *sl;
2699 
2700                 cmdp->u.raw64.sdata = (u64)-1;
2701                 cmdp->u.raw64.sg_ranz = sgcnt;
2702                 scsi_for_each_sg(scp, sl, sgcnt, i) {
2703                     cmdp->u.raw64.sg_lst[i].sg_ptr = sg_dma_address(sl);
2704 #ifdef GDTH_DMA_STATISTICS
2705                     if (cmdp->u.raw64.sg_lst[i].sg_ptr > (u64)0xffffffff)
2706                         ha->dma64_cnt++;
2707                     else
2708                         ha->dma32_cnt++;
2709 #endif
2710                     cmdp->u.raw64.sg_lst[i].sg_len = sg_dma_len(sl);
2711                 }
2712             } else {
2713                 struct scatterlist *sl;
2714 
2715                 cmdp->u.raw.sdata = 0xffffffff;
2716                 cmdp->u.raw.sg_ranz = sgcnt;
2717                 scsi_for_each_sg(scp, sl, sgcnt, i) {
2718                     cmdp->u.raw.sg_lst[i].sg_ptr = sg_dma_address(sl);
2719 #ifdef GDTH_DMA_STATISTICS
2720                     ha->dma32_cnt++;
2721 #endif
2722                     cmdp->u.raw.sg_lst[i].sg_len = sg_dma_len(sl);
2723                 }
2724             }
2725 
2726 #ifdef GDTH_STATISTICS
2727             if (max_sg < sgcnt) {
2728                 max_sg = sgcnt;
2729                 TRACE3(("GDT: max_sg = %d\n",sgcnt));
2730             }
2731 #endif
2732 
2733         }
2734         if (mode64) {
2735             TRACE(("raw cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
2736                    cmdp->u.raw64.sdata,cmdp->u.raw64.sg_ranz,
2737                    cmdp->u.raw64.sg_lst[0].sg_ptr,
2738                    cmdp->u.raw64.sg_lst[0].sg_len));
2739             /* evaluate command size */
2740             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw64.sg_lst) +
2741                 (u16)cmdp->u.raw64.sg_ranz * sizeof(gdth_sg64_str);
2742         } else {
2743             TRACE(("raw cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
2744                    cmdp->u.raw.sdata,cmdp->u.raw.sg_ranz,
2745                    cmdp->u.raw.sg_lst[0].sg_ptr,
2746                    cmdp->u.raw.sg_lst[0].sg_len));
2747             /* evaluate command size */
2748             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw.sg_lst) +
2749                 (u16)cmdp->u.raw.sg_ranz * sizeof(gdth_sg_str);
2750         }
2751     }
2752     /* check space */
2753     if (ha->cmd_len & 3)
2754         ha->cmd_len += (4 - (ha->cmd_len & 3));
2755 
2756     if (ha->cmd_cnt > 0) {
2757         if ((ha->cmd_offs_dpmem + ha->cmd_len + DPMEM_COMMAND_OFFSET) >
2758             ha->ic_all_size) {
2759             TRACE2(("gdth_fill_raw() DPMEM overflow\n"));
2760             ha->cmd_tab[cmd_index-2].cmnd = UNUSED_CMND;
2761             return 0;
2762         }
2763     }
2764 
2765     /* copy command */
2766     gdth_copy_command(ha);
2767     return cmd_index;
2768 }
2769 
2770 static int gdth_special_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp)
2771 {
2772     register gdth_cmd_str *cmdp;
2773     struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
2774     int cmd_index;
2775 
2776     cmdp= ha->pccb;
2777     TRACE2(("gdth_special_cmd(): "));
2778 
2779     if (ha->type==GDT_EISA && ha->cmd_cnt>0) 
2780         return 0;
2781 
2782     *cmdp = *cmndinfo->internal_cmd_str;
2783     cmdp->RequestBuffer = scp;
2784 
2785     /* search free command index */
2786     if (!(cmd_index=gdth_get_cmd_index(ha))) {
2787         TRACE(("GDT: No free command index found\n"));
2788         return 0;
2789     }
2790 
2791     /* if it's the first command, set command semaphore */
2792     if (ha->cmd_cnt == 0)
2793        gdth_set_sema0(ha);
2794 
2795     /* evaluate command size, check space */
2796     if (cmdp->OpCode == GDT_IOCTL) {
2797         TRACE2(("IOCTL\n"));
2798         ha->cmd_len = 
2799             GDTOFFSOF(gdth_cmd_str,u.ioctl.p_param) + sizeof(u64);
2800     } else if (cmdp->Service == CACHESERVICE) {
2801         TRACE2(("cache command %d\n",cmdp->OpCode));
2802         if (ha->cache_feat & GDT_64BIT)
2803             ha->cmd_len = 
2804                 GDTOFFSOF(gdth_cmd_str,u.cache64.sg_lst) + sizeof(gdth_sg64_str);
2805         else
2806             ha->cmd_len = 
2807                 GDTOFFSOF(gdth_cmd_str,u.cache.sg_lst) + sizeof(gdth_sg_str);
2808     } else if (cmdp->Service == SCSIRAWSERVICE) {
2809         TRACE2(("raw command %d\n",cmdp->OpCode));
2810         if (ha->raw_feat & GDT_64BIT)
2811             ha->cmd_len = 
2812                 GDTOFFSOF(gdth_cmd_str,u.raw64.sg_lst) + sizeof(gdth_sg64_str);
2813         else
2814             ha->cmd_len = 
2815                 GDTOFFSOF(gdth_cmd_str,u.raw.sg_lst) + sizeof(gdth_sg_str);
2816     }
2817 
2818     if (ha->cmd_len & 3)
2819         ha->cmd_len += (4 - (ha->cmd_len & 3));
2820 
2821     if (ha->cmd_cnt > 0) {
2822         if ((ha->cmd_offs_dpmem + ha->cmd_len + DPMEM_COMMAND_OFFSET) >
2823             ha->ic_all_size) {
2824             TRACE2(("gdth_special_cmd() DPMEM overflow\n"));
2825             ha->cmd_tab[cmd_index-2].cmnd = UNUSED_CMND;
2826             return 0;
2827         }
2828     }
2829 
2830     /* copy command */
2831     gdth_copy_command(ha);
2832     return cmd_index;
2833 }    
2834 
2835 
2836 /* Controller event handling functions */
2837 static gdth_evt_str *gdth_store_event(gdth_ha_str *ha, u16 source, 
2838                                       u16 idx, gdth_evt_data *evt)
2839 {
2840     gdth_evt_str *e;
2841     struct timeval tv;
2842 
2843     /* no GDTH_LOCK_HA() ! */
2844     TRACE2(("gdth_store_event() source %d idx %d\n", source, idx));
2845     if (source == 0)                        /* no source -> no event */
2846         return NULL;
2847 
2848     if (ebuffer[elastidx].event_source == source &&
2849         ebuffer[elastidx].event_idx == idx &&
2850         ((evt->size != 0 && ebuffer[elastidx].event_data.size != 0 &&
2851             !memcmp((char *)&ebuffer[elastidx].event_data.eu,
2852             (char *)&evt->eu, evt->size)) ||
2853         (evt->size == 0 && ebuffer[elastidx].event_data.size == 0 &&
2854             !strcmp((char *)&ebuffer[elastidx].event_data.event_string,
2855             (char *)&evt->event_string)))) { 
2856         e = &ebuffer[elastidx];
2857         do_gettimeofday(&tv);
2858         e->last_stamp = tv.tv_sec;
2859         ++e->same_count;
2860     } else {
2861         if (ebuffer[elastidx].event_source != 0) {  /* entry not free ? */
2862             ++elastidx;
2863             if (elastidx == MAX_EVENTS)
2864                 elastidx = 0;
2865             if (elastidx == eoldidx) {              /* reached mark ? */
2866                 ++eoldidx;
2867                 if (eoldidx == MAX_EVENTS)
2868                     eoldidx = 0;
2869             }
2870         }
2871         e = &ebuffer[elastidx];
2872         e->event_source = source;
2873         e->event_idx = idx;
2874         do_gettimeofday(&tv);
2875         e->first_stamp = e->last_stamp = tv.tv_sec;
2876         e->same_count = 1;
2877         e->event_data = *evt;
2878         e->application = 0;
2879     }
2880     return e;
2881 }
2882 
2883 static int gdth_read_event(gdth_ha_str *ha, int handle, gdth_evt_str *estr)
2884 {
2885     gdth_evt_str *e;
2886     int eindex;
2887     unsigned long flags;
2888 
2889     TRACE2(("gdth_read_event() handle %d\n", handle));
2890     spin_lock_irqsave(&ha->smp_lock, flags);
2891     if (handle == -1)
2892         eindex = eoldidx;
2893     else
2894         eindex = handle;
2895     estr->event_source = 0;
2896 
2897     if (eindex < 0 || eindex >= MAX_EVENTS) {
2898         spin_unlock_irqrestore(&ha->smp_lock, flags);
2899         return eindex;
2900     }
2901     e = &ebuffer[eindex];
2902     if (e->event_source != 0) {
2903         if (eindex != elastidx) {
2904             if (++eindex == MAX_EVENTS)
2905                 eindex = 0;
2906         } else {
2907             eindex = -1;
2908         }
2909         memcpy(estr, e, sizeof(gdth_evt_str));
2910     }
2911     spin_unlock_irqrestore(&ha->smp_lock, flags);
2912     return eindex;
2913 }
2914 
2915 static void gdth_readapp_event(gdth_ha_str *ha,
2916                                u8 application, gdth_evt_str *estr)
2917 {
2918     gdth_evt_str *e;
2919     int eindex;
2920     unsigned long flags;
2921     u8 found = FALSE;
2922 
2923     TRACE2(("gdth_readapp_event() app. %d\n", application));
2924     spin_lock_irqsave(&ha->smp_lock, flags);
2925     eindex = eoldidx;
2926     for (;;) {
2927         e = &ebuffer[eindex];
2928         if (e->event_source == 0)
2929             break;
2930         if ((e->application & application) == 0) {
2931             e->application |= application;
2932             found = TRUE;
2933             break;
2934         }
2935         if (eindex == elastidx)
2936             break;
2937         if (++eindex == MAX_EVENTS)
2938             eindex = 0;
2939     }
2940     if (found)
2941         memcpy(estr, e, sizeof(gdth_evt_str));
2942     else
2943         estr->event_source = 0;
2944     spin_unlock_irqrestore(&ha->smp_lock, flags);
2945 }
2946 
2947 static void gdth_clear_events(void)
2948 {
2949     TRACE(("gdth_clear_events()"));
2950 
2951     eoldidx = elastidx = 0;
2952     ebuffer[0].event_source = 0;
2953 }
2954 
2955 
2956 /* SCSI interface functions */
2957 
2958 static irqreturn_t __gdth_interrupt(gdth_ha_str *ha,
2959                                     int gdth_from_wait, int* pIndex)
2960 {
2961     gdt6m_dpram_str __iomem *dp6m_ptr = NULL;
2962     gdt6_dpram_str __iomem *dp6_ptr;
2963     gdt2_dpram_str __iomem *dp2_ptr;
2964     Scsi_Cmnd *scp;
2965     int rval, i;
2966     u8 IStatus;
2967     u16 Service;
2968     unsigned long flags = 0;
2969 #ifdef INT_COAL
2970     int coalesced = FALSE;
2971     int next = FALSE;
2972     gdth_coal_status *pcs = NULL;
2973     int act_int_coal = 0;       
2974 #endif
2975 
2976     TRACE(("gdth_interrupt() IRQ %d\n", ha->irq));
2977 
2978     /* if polling and not from gdth_wait() -> return */
2979     if (gdth_polling) {
2980         if (!gdth_from_wait) {
2981             return IRQ_HANDLED;
2982         }
2983     }
2984 
2985     if (!gdth_polling)
2986         spin_lock_irqsave(&ha->smp_lock, flags);
2987 
2988     /* search controller */
2989     IStatus = gdth_get_status(ha);
2990     if (IStatus == 0) {
2991         /* spurious interrupt */
2992         if (!gdth_polling)
2993             spin_unlock_irqrestore(&ha->smp_lock, flags);
2994         return IRQ_HANDLED;
2995     }
2996 
2997 #ifdef GDTH_STATISTICS
2998     ++act_ints;
2999 #endif
3000 
3001 #ifdef INT_COAL
3002     /* See if the fw is returning coalesced status */
3003     if (IStatus == COALINDEX) {
3004         /* Coalesced status.  Setup the initial status 
3005            buffer pointer and flags */
3006         pcs = ha->coal_stat;
3007         coalesced = TRUE;        
3008         next = TRUE;
3009     }
3010 
3011     do {
3012         if (coalesced) {
3013             /* For coalesced requests all status
3014                information is found in the status buffer */
3015             IStatus = (u8)(pcs->status & 0xff);
3016         }
3017 #endif
3018     
3019         if (ha->type == GDT_EISA) {
3020             if (IStatus & 0x80) {                       /* error flag */
3021                 IStatus &= ~0x80;
3022                 ha->status = inw(ha->bmic + MAILBOXREG+8);
3023                 TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3024             } else                                      /* no error */
3025                 ha->status = S_OK;
3026             ha->info = inl(ha->bmic + MAILBOXREG+12);
3027             ha->service = inw(ha->bmic + MAILBOXREG+10);
3028             ha->info2 = inl(ha->bmic + MAILBOXREG+4);
3029 
3030             outb(0xff, ha->bmic + EDOORREG);    /* acknowledge interrupt */
3031             outb(0x00, ha->bmic + SEMA1REG);    /* reset status semaphore */
3032         } else if (ha->type == GDT_ISA) {
3033             dp2_ptr = ha->brd;
3034             if (IStatus & 0x80) {                       /* error flag */
3035                 IStatus &= ~0x80;
3036                 ha->status = readw(&dp2_ptr->u.ic.Status);
3037                 TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3038             } else                                      /* no error */
3039                 ha->status = S_OK;
3040             ha->info = readl(&dp2_ptr->u.ic.Info[0]);
3041             ha->service = readw(&dp2_ptr->u.ic.Service);
3042             ha->info2 = readl(&dp2_ptr->u.ic.Info[1]);
3043 
3044             writeb(0xff, &dp2_ptr->io.irqdel); /* acknowledge interrupt */
3045             writeb(0, &dp2_ptr->u.ic.Cmd_Index);/* reset command index */
3046             writeb(0, &dp2_ptr->io.Sema1);     /* reset status semaphore */
3047         } else if (ha->type == GDT_PCI) {
3048             dp6_ptr = ha->brd;
3049             if (IStatus & 0x80) {                       /* error flag */
3050                 IStatus &= ~0x80;
3051                 ha->status = readw(&dp6_ptr->u.ic.Status);
3052                 TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3053             } else                                      /* no error */
3054                 ha->status = S_OK;
3055             ha->info = readl(&dp6_ptr->u.ic.Info[0]);
3056             ha->service = readw(&dp6_ptr->u.ic.Service);
3057             ha->info2 = readl(&dp6_ptr->u.ic.Info[1]);
3058 
3059             writeb(0xff, &dp6_ptr->io.irqdel); /* acknowledge interrupt */
3060             writeb(0, &dp6_ptr->u.ic.Cmd_Index);/* reset command index */
3061             writeb(0, &dp6_ptr->io.Sema1);     /* reset status semaphore */
3062         } else if (ha->type == GDT_PCINEW) {
3063             if (IStatus & 0x80) {                       /* error flag */
3064                 IStatus &= ~0x80;
3065                 ha->status = inw(PTR2USHORT(&ha->plx->status));
3066                 TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3067             } else
3068                 ha->status = S_OK;
3069             ha->info = inl(PTR2USHORT(&ha->plx->info[0]));
3070             ha->service = inw(PTR2USHORT(&ha->plx->service));
3071             ha->info2 = inl(PTR2USHORT(&ha->plx->info[1]));
3072 
3073             outb(0xff, PTR2USHORT(&ha->plx->edoor_reg)); 
3074             outb(0x00, PTR2USHORT(&ha->plx->sema1_reg)); 
3075         } else if (ha->type == GDT_PCIMPR) {
3076             dp6m_ptr = ha->brd;
3077             if (IStatus & 0x80) {                       /* error flag */
3078                 IStatus &= ~0x80;
3079 #ifdef INT_COAL
3080                 if (coalesced)
3081                     ha->status = pcs->ext_status & 0xffff;
3082                 else 
3083 #endif
3084                     ha->status = readw(&dp6m_ptr->i960r.status);
3085                 TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3086             } else                                      /* no error */
3087                 ha->status = S_OK;
3088 #ifdef INT_COAL
3089             /* get information */
3090             if (coalesced) {    
3091                 ha->info = pcs->info0;
3092                 ha->info2 = pcs->info1;
3093                 ha->service = (pcs->ext_status >> 16) & 0xffff;
3094             } else
3095 #endif
3096             {
3097                 ha->info = readl(&dp6m_ptr->i960r.info[0]);
3098                 ha->service = readw(&dp6m_ptr->i960r.service);
3099                 ha->info2 = readl(&dp6m_ptr->i960r.info[1]);
3100             }
3101             /* event string */
3102             if (IStatus == ASYNCINDEX) {
3103                 if (ha->service != SCREENSERVICE &&
3104                     (ha->fw_vers & 0xff) >= 0x1a) {
3105                     ha->dvr.severity = readb
3106                         (&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.severity);
3107                     for (i = 0; i < 256; ++i) {
3108                         ha->dvr.event_string[i] = readb
3109                             (&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.evt_str[i]);
3110                         if (ha->dvr.event_string[i] == 0)
3111                             break;
3112                     }
3113                 }
3114             }
3115 #ifdef INT_COAL
3116             /* Make sure that non coalesced interrupts get cleared
3117                before being handled by gdth_async_event/gdth_sync_event */
3118             if (!coalesced)
3119 #endif                          
3120             {
3121                 writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
3122                 writeb(0, &dp6m_ptr->i960r.sema1_reg);
3123             }
3124         } else {
3125             TRACE2(("gdth_interrupt() unknown controller type\n"));
3126             if (!gdth_polling)
3127                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3128             return IRQ_HANDLED;
3129         }
3130 
3131         TRACE(("gdth_interrupt() index %d stat %d info %d\n",
3132                IStatus,ha->status,ha->info));
3133 
3134         if (gdth_from_wait) {
3135             *pIndex = (int)IStatus;
3136         }
3137 
3138         if (IStatus == ASYNCINDEX) {
3139             TRACE2(("gdth_interrupt() async. event\n"));
3140             gdth_async_event(ha);
3141             if (!gdth_polling)
3142                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3143             gdth_next(ha);
3144             return IRQ_HANDLED;
3145         } 
3146 
3147         if (IStatus == SPEZINDEX) {
3148             TRACE2(("Service unknown or not initialized !\n"));
3149             ha->dvr.size = sizeof(ha->dvr.eu.driver);
3150             ha->dvr.eu.driver.ionode = ha->hanum;
3151             gdth_store_event(ha, ES_DRIVER, 4, &ha->dvr);
3152             if (!gdth_polling)
3153                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3154             return IRQ_HANDLED;
3155         }
3156         scp     = ha->cmd_tab[IStatus-2].cmnd;
3157         Service = ha->cmd_tab[IStatus-2].service;
3158         ha->cmd_tab[IStatus-2].cmnd = UNUSED_CMND;
3159         if (scp == UNUSED_CMND) {
3160             TRACE2(("gdth_interrupt() index to unused command (%d)\n",IStatus));
3161             ha->dvr.size = sizeof(ha->dvr.eu.driver);
3162             ha->dvr.eu.driver.ionode = ha->hanum;
3163             ha->dvr.eu.driver.index = IStatus;
3164             gdth_store_event(ha, ES_DRIVER, 1, &ha->dvr);
3165             if (!gdth_polling)
3166                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3167             return IRQ_HANDLED;
3168         }
3169         if (scp == INTERNAL_CMND) {
3170             TRACE(("gdth_interrupt() answer to internal command\n"));
3171             if (!gdth_polling)
3172                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3173             return IRQ_HANDLED;
3174         }
3175 
3176         TRACE(("gdth_interrupt() sync. status\n"));
3177         rval = gdth_sync_event(ha,Service,IStatus,scp);
3178         if (!gdth_polling)
3179             spin_unlock_irqrestore(&ha->smp_lock, flags);
3180         if (rval == 2) {
3181             gdth_putq(ha, scp, gdth_cmnd_priv(scp)->priority);
3182         } else if (rval == 1) {
3183             gdth_scsi_done(scp);
3184         }
3185 
3186 #ifdef INT_COAL
3187         if (coalesced) {
3188             /* go to the next status in the status buffer */
3189             ++pcs;
3190 #ifdef GDTH_STATISTICS
3191             ++act_int_coal;
3192             if (act_int_coal > max_int_coal) {
3193                 max_int_coal = act_int_coal;
3194                 printk("GDT: max_int_coal = %d\n",(u16)max_int_coal);
3195             }
3196 #endif      
3197             /* see if there is another status */
3198             if (pcs->status == 0)    
3199                 /* Stop the coalesce loop */
3200                 next = FALSE;
3201         }
3202     } while (next);
3203 
3204     /* coalescing only for new GDT_PCIMPR controllers available */      
3205     if (ha->type == GDT_PCIMPR && coalesced) {
3206         writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
3207         writeb(0, &dp6m_ptr->i960r.sema1_reg);
3208     }
3209 #endif
3210 
3211     gdth_next(ha);
3212     return IRQ_HANDLED;
3213 }
3214 
3215 static irqreturn_t gdth_interrupt(int irq, void *dev_id)
3216 {
3217         gdth_ha_str *ha = dev_id;
3218 
3219         return __gdth_interrupt(ha, false, NULL);
3220 }
3221 
3222 static int gdth_sync_event(gdth_ha_str *ha, int service, u8 index,
3223                                                               Scsi_Cmnd *scp)
3224 {
3225     gdth_msg_str *msg;
3226     gdth_cmd_str *cmdp;
3227     u8 b, t;
3228     struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
3229 
3230     cmdp = ha->pccb;
3231     TRACE(("gdth_sync_event() serv %d status %d\n",
3232            service,ha->status));
3233 
3234     if (service == SCREENSERVICE) {
3235         msg  = ha->pmsg;
3236         TRACE(("len: %d, answer: %d, ext: %d, alen: %d\n",
3237                msg->msg_len,msg->msg_answer,msg->msg_ext,msg->msg_alen));
3238         if (msg->msg_len > MSGLEN+1)
3239             msg->msg_len = MSGLEN+1;
3240         if (msg->msg_len)
3241             if (!(msg->msg_answer && msg->msg_ext)) {
3242                 msg->msg_text[msg->msg_len] = '\0';
3243                 printk("%s",msg->msg_text);
3244             }
3245 
3246         if (msg->msg_ext && !msg->msg_answer) {
3247             while (gdth_test_busy(ha))
3248                 gdth_delay(0);
3249             cmdp->Service       = SCREENSERVICE;
3250             cmdp->RequestBuffer = SCREEN_CMND;
3251             gdth_get_cmd_index(ha);
3252             gdth_set_sema0(ha);
3253             cmdp->OpCode        = GDT_READ;
3254             cmdp->BoardNode     = LOCALBOARD;
3255             cmdp->u.screen.reserved  = 0;
3256             cmdp->u.screen.su.msg.msg_handle= msg->msg_handle;
3257             cmdp->u.screen.su.msg.msg_addr  = ha->msg_phys;
3258             ha->cmd_offs_dpmem = 0;
3259             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.screen.su.msg.msg_addr) 
3260                 + sizeof(u64);
3261             ha->cmd_cnt = 0;
3262             gdth_copy_command(ha);
3263             gdth_release_event(ha);
3264             return 0;
3265         }
3266 
3267         if (msg->msg_answer && msg->msg_alen) {
3268             /* default answers (getchar() not possible) */
3269             if (msg->msg_alen == 1) {
3270                 msg->msg_alen = 0;
3271                 msg->msg_len = 1;
3272                 msg->msg_text[0] = 0;
3273             } else {
3274                 msg->msg_alen -= 2;
3275                 msg->msg_len = 2;
3276                 msg->msg_text[0] = 1;
3277                 msg->msg_text[1] = 0;
3278             }
3279             msg->msg_ext    = 0;
3280             msg->msg_answer = 0;
3281             while (gdth_test_busy(ha))
3282                 gdth_delay(0);
3283             cmdp->Service       = SCREENSERVICE;
3284             cmdp->RequestBuffer = SCREEN_CMND;
3285             gdth_get_cmd_index(ha);
3286             gdth_set_sema0(ha);
3287             cmdp->OpCode        = GDT_WRITE;
3288             cmdp->BoardNode     = LOCALBOARD;
3289             cmdp->u.screen.reserved  = 0;
3290             cmdp->u.screen.su.msg.msg_handle= msg->msg_handle;
3291             cmdp->u.screen.su.msg.msg_addr  = ha->msg_phys;
3292             ha->cmd_offs_dpmem = 0;
3293             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.screen.su.msg.msg_addr) 
3294                 + sizeof(u64);
3295             ha->cmd_cnt = 0;
3296             gdth_copy_command(ha);
3297             gdth_release_event(ha);
3298             return 0;
3299         }
3300         printk("\n");
3301 
3302     } else {
3303         b = scp->device->channel;
3304         t = scp->device->id;
3305         if (cmndinfo->OpCode == -1 && b != ha->virt_bus) {
3306             ha->raw[BUS_L2P(ha,b)].io_cnt[t]--;
3307         }
3308         /* cache or raw service */
3309         if (ha->status == S_BSY) {
3310             TRACE2(("Controller busy -> retry !\n"));
3311             if (cmndinfo->OpCode == GDT_MOUNT)
3312                 cmndinfo->OpCode = GDT_CLUST_INFO;
3313             /* retry */
3314             return 2;
3315         }
3316         if (scsi_bufflen(scp))
3317             pci_unmap_sg(ha->pdev, scsi_sglist(scp), scsi_sg_count(scp),
3318                          cmndinfo->dma_dir);
3319 
3320         if (cmndinfo->sense_paddr)
3321             pci_unmap_page(ha->pdev, cmndinfo->sense_paddr, 16,
3322                                                            PCI_DMA_FROMDEVICE);
3323 
3324         if (ha->status == S_OK) {
3325             cmndinfo->status = S_OK;
3326             cmndinfo->info = ha->info;
3327             if (cmndinfo->OpCode != -1) {
3328                 TRACE2(("gdth_sync_event(): special cmd 0x%x OK\n",
3329                         cmndinfo->OpCode));
3330                 /* special commands GDT_CLUST_INFO/GDT_MOUNT ? */
3331                 if (cmndinfo->OpCode == GDT_CLUST_INFO) {
3332                     ha->hdr[t].cluster_type = (u8)ha->info;
3333                     if (!(ha->hdr[t].cluster_type & 
3334                         CLUSTER_MOUNTED)) {
3335                         /* NOT MOUNTED -> MOUNT */
3336                         cmndinfo->OpCode = GDT_MOUNT;
3337                         if (ha->hdr[t].cluster_type & 
3338                             CLUSTER_RESERVED) {
3339                             /* cluster drive RESERVED (on the other node) */
3340                             cmndinfo->phase = -2;      /* reservation conflict */
3341                         }
3342                     } else {
3343                         cmndinfo->OpCode = -1;
3344                     }
3345                 } else {
3346                     if (cmndinfo->OpCode == GDT_MOUNT) {
3347                         ha->hdr[t].cluster_type |= CLUSTER_MOUNTED;
3348                         ha->hdr[t].media_changed = TRUE;
3349                     } else if (cmndinfo->OpCode == GDT_UNMOUNT) {
3350                         ha->hdr[t].cluster_type &= ~CLUSTER_MOUNTED;
3351                         ha->hdr[t].media_changed = TRUE;
3352                     } 
3353                     cmndinfo->OpCode = -1;
3354                 }
3355                 /* retry */
3356                 cmndinfo->priority = HIGH_PRI;
3357                 return 2;
3358             } else {
3359                 /* RESERVE/RELEASE ? */
3360                 if (scp->cmnd[0] == RESERVE) {
3361                     ha->hdr[t].cluster_type |= CLUSTER_RESERVED;
3362                 } else if (scp->cmnd[0] == RELEASE) {
3363                     ha->hdr[t].cluster_type &= ~CLUSTER_RESERVED;
3364                 }           
3365                 scp->result = DID_OK << 16;
3366                 scp->sense_buffer[0] = 0;
3367             }
3368         } else {
3369             cmndinfo->status = ha->status;
3370             cmndinfo->info = ha->info;
3371 
3372             if (cmndinfo->OpCode != -1) {
3373                 TRACE2(("gdth_sync_event(): special cmd 0x%x error 0x%x\n",
3374                         cmndinfo->OpCode, ha->status));
3375                 if (cmndinfo->OpCode == GDT_SCAN_START ||
3376                     cmndinfo->OpCode == GDT_SCAN_END) {
3377                     cmndinfo->OpCode = -1;
3378                     /* retry */
3379                     cmndinfo->priority = HIGH_PRI;
3380                     return 2;
3381                 }
3382                 memset((char*)scp->sense_buffer,0,16);
3383                 scp->sense_buffer[0] = 0x70;
3384                 scp->sense_buffer[2] = NOT_READY;
3385                 scp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
3386             } else if (service == CACHESERVICE) {
3387                 if (ha->status == S_CACHE_UNKNOWN &&
3388                     (ha->hdr[t].cluster_type & 
3389                      CLUSTER_RESERVE_STATE) == CLUSTER_RESERVE_STATE) {
3390                     /* bus reset -> force GDT_CLUST_INFO */
3391                     ha->hdr[t].cluster_type &= ~CLUSTER_RESERVED;
3392                 }
3393                 memset((char*)scp->sense_buffer,0,16);
3394                 if (ha->status == (u16)S_CACHE_RESERV) {
3395                     scp->result = (DID_OK << 16) | (RESERVATION_CONFLICT << 1);
3396                 } else {
3397                     scp->sense_buffer[0] = 0x70;
3398                     scp->sense_buffer[2] = NOT_READY;
3399                     scp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
3400                 }
3401                 if (!cmndinfo->internal_command) {
3402                     ha->dvr.size = sizeof(ha->dvr.eu.sync);
3403                     ha->dvr.eu.sync.ionode  = ha->hanum;
3404                     ha->dvr.eu.sync.service = service;
3405                     ha->dvr.eu.sync.status  = ha->status;
3406                     ha->dvr.eu.sync.info    = ha->info;
3407                     ha->dvr.eu.sync.hostdrive = t;
3408                     if (ha->status >= 0x8000)
3409                         gdth_store_event(ha, ES_SYNC, 0, &ha->dvr);
3410                     else
3411                         gdth_store_event(ha, ES_SYNC, service, &ha->dvr);
3412                 }
3413             } else {
3414                 /* sense buffer filled from controller firmware (DMA) */
3415                 if (ha->status != S_RAW_SCSI || ha->info >= 0x100) {
3416                     scp->result = DID_BAD_TARGET << 16;
3417                 } else {
3418                     scp->result = (DID_OK << 16) | ha->info;
3419                 }
3420             }
3421         }
3422         if (!cmndinfo->wait_for_completion)
3423             cmndinfo->wait_for_completion++;
3424         else 
3425             return 1;
3426     }
3427 
3428     return 0;
3429 }
3430 
3431 static char *async_cache_tab[] = {
3432 /* 0*/  "\011\000\002\002\002\004\002\006\004"
3433         "GDT HA %u, service %u, async. status %u/%lu unknown",
3434 /* 1*/  "\011\000\002\002\002\004\002\006\004"
3435         "GDT HA %u, service %u, async. status %u/%lu unknown",
3436 /* 2*/  "\005\000\002\006\004"
3437         "GDT HA %u, Host Drive %lu not ready",
3438 /* 3*/  "\005\000\002\006\004"
3439         "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",
3440 /* 4*/  "\005\000\002\006\004"
3441         "GDT HA %u, mirror update on Host Drive %lu failed",
3442 /* 5*/  "\005\000\002\006\004"
3443         "GDT HA %u, Mirror Drive %lu failed",
3444 /* 6*/  "\005\000\002\006\004"
3445         "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",
3446 /* 7*/  "\005\000\002\006\004"
3447         "GDT HA %u, Host Drive %lu write protected",
3448 /* 8*/  "\005\000\002\006\004"
3449         "GDT HA %u, media changed in Host Drive %lu",
3450 /* 9*/  "\005\000\002\006\004"
3451         "GDT HA %u, Host Drive %lu is offline",
3452 /*10*/  "\005\000\002\006\004"
3453         "GDT HA %u, media change of Mirror Drive %lu",
3454 /*11*/  "\005\000\002\006\004"
3455         "GDT HA %u, Mirror Drive %lu is write protected",
3456 /*12*/  "\005\000\002\006\004"
3457         "GDT HA %u, general error on Host Drive %lu. Please check the devices of this drive!",
3458 /*13*/  "\007\000\002\006\002\010\002"
3459         "GDT HA %u, Array Drive %u: Cache Drive %u failed",
3460 /*14*/  "\005\000\002\006\002"
3461         "GDT HA %u, Array Drive %u: FAIL state entered",
3462 /*15*/  "\005\000\002\006\002"
3463         "GDT HA %u, Array Drive %u: error",
3464 /*16*/  "\007\000\002\006\002\010\002"
3465         "GDT HA %u, Array Drive %u: failed drive replaced by Cache Drive %u",
3466 /*17*/  "\005\000\002\006\002"
3467         "GDT HA %u, Array Drive %u: parity build failed",
3468 /*18*/  "\005\000\002\006\002"
3469         "GDT HA %u, Array Drive %u: drive rebuild failed",
3470 /*19*/  "\005\000\002\010\002"
3471         "GDT HA %u, Test of Hot Fix %u failed",
3472 /*20*/  "\005\000\002\006\002"
3473         "GDT HA %u, Array Drive %u: drive build finished successfully",
3474 /*21*/  "\005\000\002\006\002"
3475         "GDT HA %u, Array Drive %u: drive rebuild finished successfully",
3476 /*22*/  "\007\000\002\006\002\010\002"
3477         "GDT HA %u, Array Drive %u: Hot Fix %u activated",
3478 /*23*/  "\005\000\002\006\002"
3479         "GDT HA %u, Host Drive %u: processing of i/o aborted due to serious drive error",
3480 /*24*/  "\005\000\002\010\002"
3481         "GDT HA %u, mirror update on Cache Drive %u completed",
3482 /*25*/  "\005\000\002\010\002"
3483         "GDT HA %u, mirror update on Cache Drive %lu failed",
3484 /*26*/  "\005\000\002\006\002"
3485         "GDT HA %u, Array Drive %u: drive rebuild started",
3486 /*27*/  "\005\000\002\012\001"
3487         "GDT HA %u, Fault bus %u: SHELF OK detected",
3488 /*28*/  "\005\000\002\012\001"
3489         "GDT HA %u, Fault bus %u: SHELF not OK detected",
3490 /*29*/  "\007\000\002\012\001\013\001"
3491         "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug started",
3492 /*30*/  "\007\000\002\012\001\013\001"
3493         "GDT HA %u, Fault bus %u, ID %u: new disk detected",
3494 /*31*/  "\007\000\002\012\001\013\001"
3495         "GDT HA %u, Fault bus %u, ID %u: old disk detected",
3496 /*32*/  "\007\000\002\012\001\013\001"
3497         "GDT HA %u, Fault bus %u, ID %u: plugging an active disk is invalid",
3498 /*33*/  "\007\000\002\012\001\013\001"
3499         "GDT HA %u, Fault bus %u, ID %u: invalid device detected",
3500 /*34*/  "\011\000\002\012\001\013\001\006\004"
3501         "GDT HA %u, Fault bus %u, ID %u: insufficient disk capacity (%lu MB required)",
3502 /*35*/  "\007\000\002\012\001\013\001"
3503         "GDT HA %u, Fault bus %u, ID %u: disk write protected",
3504 /*36*/  "\007\000\002\012\001\013\001"
3505         "GDT HA %u, Fault bus %u, ID %u: disk not available",
3506 /*37*/  "\007\000\002\012\001\006\004"
3507         "GDT HA %u, Fault bus %u: swap detected (%lu)",
3508 /*38*/  "\007\000\002\012\001\013\001"
3509         "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug finished successfully",
3510 /*39*/  "\007\000\002\012\001\013\001"
3511         "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug aborted due to user Hot Plug",
3512 /*40*/  "\007\000\002\012\001\013\001"
3513         "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug aborted",
3514 /*41*/  "\007\000\002\012\001\013\001"
3515         "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug for Hot Fix started",
3516 /*42*/  "\005\000\002\006\002"
3517         "GDT HA %u, Array Drive %u: drive build started",
3518 /*43*/  "\003\000\002"
3519         "GDT HA %u, DRAM parity error detected",
3520 /*44*/  "\005\000\002\006\002"
3521         "GDT HA %u, Mirror Drive %u: update started",
3522 /*45*/  "\007\000\002\006\002\010\002"
3523         "GDT HA %u, Mirror Drive %u: Hot Fix %u activated",
3524 /*46*/  "\005\000\002\006\002"
3525         "GDT HA %u, Array Drive %u: no matching Pool Hot Fix Drive available",
3526 /*47*/  "\005\000\002\006\002"
3527         "GDT HA %u, Array Drive %u: Pool Hot Fix Drive available",
3528 /*48*/  "\005\000\002\006\002"
3529         "GDT HA %u, Mirror Drive %u: no matching Pool Hot Fix Drive available",
3530 /*49*/  "\005\000\002\006\002"
3531         "GDT HA %u, Mirror Drive %u: Pool Hot Fix Drive available",
3532 /*50*/  "\007\000\002\012\001\013\001"
3533         "GDT HA %u, SCSI bus %u, ID %u: IGNORE_WIDE_RESIDUE message received",
3534 /*51*/  "\005\000\002\006\002"
3535         "GDT HA %u, Array Drive %u: expand started",
3536 /*52*/  "\005\000\002\006\002"
3537         "GDT HA %u, Array Drive %u: expand finished successfully",
3538 /*53*/  "\005\000\002\006\002"
3539         "GDT HA %u, Array Drive %u: expand failed",
3540 /*54*/  "\003\000\002"
3541         "GDT HA %u, CPU temperature critical",
3542 /*55*/  "\003\000\002"
3543         "GDT HA %u, CPU temperature OK",
3544 /*56*/  "\005\000\002\006\004"
3545         "GDT HA %u, Host drive %lu created",
3546 /*57*/  "\005\000\002\006\002"
3547         "GDT HA %u, Array Drive %u: expand restarted",
3548 /*58*/  "\005\000\002\006\002"
3549         "GDT HA %u, Array Drive %u: expand stopped",
3550 /*59*/  "\005\000\002\010\002"
3551         "GDT HA %u, Mirror Drive %u: drive build quited",
3552 /*60*/  "\005\000\002\006\002"
3553         "GDT HA %u, Array Drive %u: parity build quited",
3554 /*61*/  "\005\000\002\006\002"
3555         "GDT HA %u, Array Drive %u: drive rebuild quited",
3556 /*62*/  "\005\000\002\006\002"
3557         "GDT HA %u, Array Drive %u: parity verify started",
3558 /*63*/  "\005\000\002\006\002"
3559         "GDT HA %u, Array Drive %u: parity verify done",
3560 /*64*/  "\005\000\002\006\002"
3561         "GDT HA %u, Array Drive %u: parity verify failed",
3562 /*65*/  "\005\000\002\006\002"
3563         "GDT HA %u, Array Drive %u: parity error detected",
3564 /*66*/  "\005\000\002\006\002"
3565         "GDT HA %u, Array Drive %u: parity verify quited",
3566 /*67*/  "\005\000\002\006\002"
3567         "GDT HA %u, Host Drive %u reserved",
3568 /*68*/  "\005\000\002\006\002"
3569         "GDT HA %u, Host Drive %u mounted and released",
3570 /*69*/  "\005\000\002\006\002"
3571         "GDT HA %u, Host Drive %u released",
3572 /*70*/  "\003\000\002"
3573         "GDT HA %u, DRAM error detected and corrected with ECC",
3574 /*71*/  "\003\000\002"
3575         "GDT HA %u, Uncorrectable DRAM error detected with ECC",
3576 /*72*/  "\011\000\002\012\001\013\001\014\001"
3577         "GDT HA %u, SCSI bus %u, ID %u, LUN %u: reassigning block",
3578 /*73*/  "\005\000\002\006\002"
3579         "GDT HA %u, Host drive %u resetted locally",
3580 /*74*/  "\005\000\002\006\002"
3581         "GDT HA %u, Host drive %u resetted remotely",
3582 /*75*/  "\003\000\002"
3583         "GDT HA %u, async. status 75 unknown",
3584 };
3585 
3586 
3587 static int gdth_async_event(gdth_ha_str *ha)
3588 {
3589     gdth_cmd_str *cmdp;
3590     int cmd_index;
3591 
3592     cmdp= ha->pccb;
3593     TRACE2(("gdth_async_event() ha %d serv %d\n",
3594             ha->hanum, ha->service));
3595 
3596     if (ha->service == SCREENSERVICE) {
3597         if (ha->status == MSG_REQUEST) {
3598             while (gdth_test_busy(ha))
3599                 gdth_delay(0);
3600             cmdp->Service       = SCREENSERVICE;
3601             cmdp->RequestBuffer = SCREEN_CMND;
3602             cmd_index = gdth_get_cmd_index(ha);
3603             gdth_set_sema0(ha);
3604             cmdp->OpCode        = GDT_READ;
3605             cmdp->BoardNode     = LOCALBOARD;
3606             cmdp->u.screen.reserved  = 0;
3607             cmdp->u.screen.su.msg.msg_handle= MSG_INV_HANDLE;
3608             cmdp->u.screen.su.msg.msg_addr  = ha->msg_phys;
3609             ha->cmd_offs_dpmem = 0;
3610             ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.screen.su.msg.msg_addr) 
3611                 + sizeof(u64);
3612             ha->cmd_cnt = 0;
3613             gdth_copy_command(ha);
3614             if (ha->type == GDT_EISA)
3615                 printk("[EISA slot %d] ",(u16)ha->brd_phys);
3616             else if (ha->type == GDT_ISA)
3617                 printk("[DPMEM 0x%4X] ",(u16)ha->brd_phys);
3618             else 
3619                 printk("[PCI %d/%d] ",(u16)(ha->brd_phys>>8),
3620                        (u16)((ha->brd_phys>>3)&0x1f));
3621             gdth_release_event(ha);
3622         }
3623 
3624     } else {
3625         if (ha->type == GDT_PCIMPR && 
3626             (ha->fw_vers & 0xff) >= 0x1a) {
3627             ha->dvr.size = 0;
3628             ha->dvr.eu.async.ionode = ha->hanum;
3629             ha->dvr.eu.async.status  = ha->status;
3630             /* severity and event_string already set! */
3631         } else {        
3632             ha->dvr.size = sizeof(ha->dvr.eu.async);
3633             ha->dvr.eu.async.ionode   = ha->hanum;
3634             ha->dvr.eu.async.service = ha->service;
3635             ha->dvr.eu.async.status  = ha->status;
3636             ha->dvr.eu.async.info    = ha->info;
3637             *(u32 *)ha->dvr.eu.async.scsi_coord  = ha->info2;
3638         }
3639         gdth_store_event( ha, ES_ASYNC, ha->service, &ha->dvr );
3640         gdth_log_event( &ha->dvr, NULL );
3641     
3642         /* new host drive from expand? */
3643         if (ha->service == CACHESERVICE && ha->status == 56) {
3644             TRACE2(("gdth_async_event(): new host drive %d created\n",
3645                     (u16)ha->info));
3646             /* gdth_analyse_hdrive(hanum, (u16)ha->info); */
3647         }   
3648     }
3649     return 1;
3650 }
3651 
3652 static void gdth_log_event(gdth_evt_data *dvr, char *buffer)
3653 {
3654     gdth_stackframe stack;
3655     char *f = NULL;
3656     int i,j;
3657 
3658     TRACE2(("gdth_log_event()\n"));
3659     if (dvr->size == 0) {
3660         if (buffer == NULL) {
3661             printk("Adapter %d: %s\n",dvr->eu.async.ionode,dvr->event_string); 
3662         } else {
3663             sprintf(buffer,"Adapter %d: %s\n",
3664                 dvr->eu.async.ionode,dvr->event_string); 
3665         }
3666     } else if (dvr->eu.async.service == CACHESERVICE && 
3667         INDEX_OK(dvr->eu.async.status, async_cache_tab)) {
3668         TRACE2(("GDT: Async. event cache service, event no.: %d\n",
3669                 dvr->eu.async.status));
3670         
3671         f = async_cache_tab[dvr->eu.async.status];
3672         
3673         /* i: parameter to push, j: stack element to fill */
3674         for (j=0,i=1; i < f[0]; i+=2) {
3675             switch (f[i+1]) {
3676               case 4:
3677                 stack.b[j++] = *(u32*)&dvr->eu.stream[(int)f[i]];
3678                 break;
3679               case 2:
3680                 stack.b[j++] = *(u16*)&dvr->eu.stream[(int)f[i]];
3681                 break;
3682               case 1:
3683                 stack.b[j++] = *(u8*)&dvr->eu.stream[(int)f[i]];
3684                 break;
3685               default:
3686                 break;
3687             }
3688         }
3689         
3690         if (buffer == NULL) {
3691             printk(&f[(int)f[0]],stack); 
3692             printk("\n");
3693         } else {
3694             sprintf(buffer,&f[(int)f[0]],stack); 
3695         }
3696 
3697     } else {
3698         if (buffer == NULL) {
3699             printk("GDT HA %u, Unknown async. event service %d event no. %d\n",
3700                    dvr->eu.async.ionode,dvr->eu.async.service,dvr->eu.async.status);
3701         } else {
3702             sprintf(buffer,"GDT HA %u, Unknown async. event service %d event no. %d",
3703                     dvr->eu.async.ionode,dvr->eu.async.service,dvr->eu.async.status);
3704         }
3705     }
3706 }
3707 
3708 #ifdef GDTH_STATISTICS
3709 static u8       gdth_timer_running;
3710 
3711 static void gdth_timeout(unsigned long data)
3712 {
3713     u32 i;
3714     Scsi_Cmnd *nscp;
3715     gdth_ha_str *ha;
3716     unsigned long flags;
3717 
3718     if(unlikely(list_empty(&gdth_instances))) {
3719             gdth_timer_running = 0;
3720             return;
3721     }
3722 
3723     ha = list_first_entry(&gdth_instances, gdth_ha_str, list);
3724     spin_lock_irqsave(&ha->smp_lock, flags);
3725 
3726     for (act_stats=0,i=0; i<GDTH_MAXCMDS; ++i) 
3727         if (ha->cmd_tab[i].cmnd != UNUSED_CMND)
3728             ++act_stats;
3729 
3730     for (act_rq=0,nscp=ha->req_first; nscp; nscp=(Scsi_Cmnd*)nscp->SCp.ptr)
3731         ++act_rq;
3732 
3733     TRACE2(("gdth_to(): ints %d, ios %d, act_stats %d, act_rq %d\n",
3734             act_ints, act_ios, act_stats, act_rq));
3735     act_ints = act_ios = 0;
3736 
3737     gdth_timer.expires = jiffies + 30 * HZ;
3738     add_timer(&gdth_timer);
3739     spin_unlock_irqrestore(&ha->smp_lock, flags);
3740 }
3741 
3742 static void gdth_timer_init(void)
3743 {
3744         if (gdth_timer_running)
3745                 return;
3746         gdth_timer_running = 1;
3747         TRACE2(("gdth_detect(): Initializing timer !\n"));
3748         gdth_timer.expires = jiffies + HZ;
3749         gdth_timer.data = 0L;
3750         gdth_timer.function = gdth_timeout;
3751         add_timer(&gdth_timer);
3752 }
3753 #else
3754 static inline void gdth_timer_init(void)
3755 {
3756 }
3757 #endif
3758 
3759 static void __init internal_setup(char *str,int *ints)
3760 {
3761     int i, argc;
3762     char *cur_str, *argv;
3763 
3764     TRACE2(("internal_setup() str %s ints[0] %d\n", 
3765             str ? str:"NULL", ints ? ints[0]:0));
3766 
3767     /* read irq[] from ints[] */
3768     if (ints) {
3769         argc = ints[0];
3770         if (argc > 0) {
3771             if (argc > MAXHA)
3772                 argc = MAXHA;
3773             for (i = 0; i < argc; ++i)
3774                 irq[i] = ints[i+1];
3775         }
3776     }
3777 
3778     /* analyse string */
3779     argv = str;
3780     while (argv && (cur_str = strchr(argv, ':'))) {
3781         int val = 0, c = *++cur_str;
3782         
3783         if (c == 'n' || c == 'N')
3784             val = 0;
3785         else if (c == 'y' || c == 'Y')
3786             val = 1;
3787         else
3788             val = (int)simple_strtoul(cur_str, NULL, 0);
3789 
3790         if (!strncmp(argv, "disable:", 8))
3791             disable = val;
3792         else if (!strncmp(argv, "reserve_mode:", 13))
3793             reserve_mode = val;
3794         else if (!strncmp(argv, "reverse_scan:", 13))
3795             reverse_scan = val;
3796         else if (!strncmp(argv, "hdr_channel:", 12))
3797             hdr_channel = val;
3798         else if (!strncmp(argv, "max_ids:", 8))
3799             max_ids = val;
3800         else if (!strncmp(argv, "rescan:", 7))
3801             rescan = val;
3802         else if (!strncmp(argv, "shared_access:", 14))
3803             shared_access = val;
3804         else if (!strncmp(argv, "probe_eisa_isa:", 15))
3805             probe_eisa_isa = val;
3806         else if (!strncmp(argv, "reserve_list:", 13)) {
3807             reserve_list[0] = val;
3808             for (i = 1; i < MAX_RES_ARGS; i++) {
3809                 cur_str = strchr(cur_str, ',');
3810                 if (!cur_str)
3811                     break;
3812                 if (!isdigit((int)*++cur_str)) {
3813                     --cur_str;          
3814                     break;
3815                 }
3816                 reserve_list[i] = 
3817                     (int)simple_strtoul(cur_str, NULL, 0);
3818             }
3819             if (!cur_str)
3820                 break;
3821             argv = ++cur_str;
3822             continue;
3823         }
3824 
3825         if ((argv = strchr(argv, ',')))
3826             ++argv;
3827     }
3828 }
3829 
3830 int __init option_setup(char *str)
3831 {
3832     int ints[MAXHA];
3833     char *cur = str;
3834     int i = 1;
3835 
3836     TRACE2(("option_setup() str %s\n", str ? str:"NULL")); 
3837 
3838     while (cur && isdigit(*cur) && i < MAXHA) {
3839         ints[i++] = simple_strtoul(cur, NULL, 0);
3840         if ((cur = strchr(cur, ',')) != NULL) cur++;
3841     }
3842 
3843     ints[0] = i - 1;
3844     internal_setup(cur, ints);
3845     return 1;
3846 }
3847 
3848 static const char *gdth_ctr_name(gdth_ha_str *ha)
3849 {
3850     TRACE2(("gdth_ctr_name()\n"));
3851 
3852     if (ha->type == GDT_EISA) {
3853         switch (ha->stype) {
3854           case GDT3_ID:
3855             return("GDT3000/3020");
3856           case GDT3A_ID:
3857             return("GDT3000A/3020A/3050A");
3858           case GDT3B_ID:
3859             return("GDT3000B/3010A");
3860         }
3861     } else if (ha->type == GDT_ISA) {
3862         return("GDT2000/2020");
3863     } else if (ha->type == GDT_PCI) {
3864         switch (ha->pdev->device) {
3865           case PCI_DEVICE_ID_VORTEX_GDT60x0:
3866             return("GDT6000/6020/6050");
3867           case PCI_DEVICE_ID_VORTEX_GDT6000B:
3868             return("GDT6000B/6010");
3869         }
3870     } 
3871     /* new controllers (GDT_PCINEW, GDT_PCIMPR, ..) use board_info IOCTL! */
3872 
3873     return("");
3874 }
3875 
3876 static const char *gdth_info(struct Scsi_Host *shp)
3877 {
3878     gdth_ha_str *ha = shost_priv(shp);
3879 
3880     TRACE2(("gdth_info()\n"));
3881     return ((const char *)ha->binfo.type_string);
3882 }
3883 
3884 static enum blk_eh_timer_return gdth_timed_out(struct scsi_cmnd *scp)
3885 {
3886         gdth_ha_str *ha = shost_priv(scp->device->host);
3887         struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
3888         u8 b, t;
3889         unsigned long flags;
3890         enum blk_eh_timer_return retval = BLK_EH_NOT_HANDLED;
3891 
3892         TRACE(("%s() cmd 0x%x\n", scp->cmnd[0], __func__));
3893         b = scp->device->channel;
3894         t = scp->device->id;
3895 
3896         /*
3897          * We don't really honor the command timeout, but we try to
3898          * honor 6 times of the actual command timeout! So reset the
3899          * timer if this is less than 6th timeout on this command!
3900          */
3901         if (++cmndinfo->timeout_count < 6)
3902                 retval = BLK_EH_RESET_TIMER;
3903 
3904         /* Reset the timeout if it is locked IO */
3905         spin_lock_irqsave(&ha->smp_lock, flags);
3906         if ((b != ha->virt_bus && ha->raw[BUS_L2P(ha, b)].lock) ||
3907             (b == ha->virt_bus && t < MAX_HDRIVES && ha->hdr[t].lock)) {
3908                 TRACE2(("%s(): locked IO, reset timeout\n", __func__));
3909                 retval = BLK_EH_RESET_TIMER;
3910         }
3911         spin_unlock_irqrestore(&ha->smp_lock, flags);
3912 
3913         return retval;
3914 }
3915 
3916 
3917 static int gdth_eh_bus_reset(Scsi_Cmnd *scp)
3918 {
3919     gdth_ha_str *ha = shost_priv(scp->device->host);
3920     int i;
3921     unsigned long flags;
3922     Scsi_Cmnd *cmnd;
3923     u8 b;
3924 
3925     TRACE2(("gdth_eh_bus_reset()\n"));
3926 
3927     b = scp->device->channel;
3928 
3929     /* clear command tab */
3930     spin_lock_irqsave(&ha->smp_lock, flags);
3931     for (i = 0; i < GDTH_MAXCMDS; ++i) {
3932         cmnd = ha->cmd_tab[i].cmnd;
3933         if (!SPECIAL_SCP(cmnd) && cmnd->device->channel == b)
3934             ha->cmd_tab[i].cmnd = UNUSED_CMND;
3935     }
3936     spin_unlock_irqrestore(&ha->smp_lock, flags);
3937 
3938     if (b == ha->virt_bus) {
3939         /* host drives */
3940         for (i = 0; i < MAX_HDRIVES; ++i) {
3941             if (ha->hdr[i].present) {
3942                 spin_lock_irqsave(&ha->smp_lock, flags);
3943                 gdth_polling = TRUE;
3944                 while (gdth_test_busy(ha))
3945                     gdth_delay(0);
3946                 if (gdth_internal_cmd(ha, CACHESERVICE,
3947                                       GDT_CLUST_RESET, i, 0, 0))
3948                     ha->hdr[i].cluster_type &= ~CLUSTER_RESERVED;
3949                 gdth_polling = FALSE;
3950                 spin_unlock_irqrestore(&ha->smp_lock, flags);
3951             }
3952         }
3953     } else {
3954         /* raw devices */
3955         spin_lock_irqsave(&ha->smp_lock, flags);
3956         for (i = 0; i < MAXID; ++i)
3957             ha->raw[BUS_L2P(ha,b)].io_cnt[i] = 0;
3958         gdth_polling = TRUE;
3959         while (gdth_test_busy(ha))
3960             gdth_delay(0);
3961         gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_RESET_BUS,
3962                           BUS_L2P(ha,b), 0, 0);
3963         gdth_polling = FALSE;
3964         spin_unlock_irqrestore(&ha->smp_lock, flags);
3965     }
3966     return SUCCESS;
3967 }
3968 
3969 static int gdth_bios_param(struct scsi_device *sdev,struct block_device *bdev,sector_t cap,int *ip)
3970 {
3971     u8 b, t;
3972     gdth_ha_str *ha = shost_priv(sdev->host);
3973     struct scsi_device *sd;
3974     unsigned capacity;
3975 
3976     sd = sdev;
3977     capacity = cap;
3978     b = sd->channel;
3979     t = sd->id;
3980     TRACE2(("gdth_bios_param() ha %d bus %d target %d\n", ha->hanum, b, t));
3981 
3982     if (b != ha->virt_bus || ha->hdr[t].heads == 0) {
3983         /* raw device or host drive without mapping information */
3984         TRACE2(("Evaluate mapping\n"));
3985         gdth_eval_mapping(capacity,&ip[2],&ip[0],&ip[1]);
3986     } else {
3987         ip[0] = ha->hdr[t].heads;
3988         ip[1] = ha->hdr[t].secs;
3989         ip[2] = capacity / ip[0] / ip[1];
3990     }
3991 
3992     TRACE2(("gdth_bios_param(): %d heads, %d secs, %d cyls\n",
3993             ip[0],ip[1],ip[2]));
3994     return 0;
3995 }
3996 
3997 
3998 static int gdth_queuecommand_lck(struct scsi_cmnd *scp,
3999                                 void (*done)(struct scsi_cmnd *))
4000 {
4001     gdth_ha_str *ha = shost_priv(scp->device->host);
4002     struct gdth_cmndinfo *cmndinfo;
4003 
4004     TRACE(("gdth_queuecommand() cmd 0x%x\n", scp->cmnd[0]));
4005 
4006     cmndinfo = gdth_get_cmndinfo(ha);
4007     BUG_ON(!cmndinfo);
4008 
4009     scp->scsi_done = done;
4010     cmndinfo->timeout_count = 0;
4011     cmndinfo->priority = DEFAULT_PRI;
4012 
4013     return __gdth_queuecommand(ha, scp, cmndinfo);
4014 }
4015 
4016 static DEF_SCSI_QCMD(gdth_queuecommand)
4017 
4018 static int __gdth_queuecommand(gdth_ha_str *ha, struct scsi_cmnd *scp,
4019                                 struct gdth_cmndinfo *cmndinfo)
4020 {
4021     scp->host_scribble = (unsigned char *)cmndinfo;
4022     cmndinfo->wait_for_completion = 1;
4023     cmndinfo->phase = -1;
4024     cmndinfo->OpCode = -1;
4025 
4026 #ifdef GDTH_STATISTICS
4027     ++act_ios;
4028 #endif
4029 
4030     gdth_putq(ha, scp, cmndinfo->priority);
4031     gdth_next(ha);
4032     return 0;
4033 }
4034 
4035 
4036 static int gdth_open(struct inode *inode, struct file *filep)
4037 {
4038     gdth_ha_str *ha;
4039 
4040     mutex_lock(&gdth_mutex);
4041     list_for_each_entry(ha, &gdth_instances, list) {
4042         if (!ha->sdev)
4043             ha->sdev = scsi_get_host_dev(ha->shost);
4044     }
4045     mutex_unlock(&gdth_mutex);
4046 
4047     TRACE(("gdth_open()\n"));
4048     return 0;
4049 }
4050 
4051 static int gdth_close(struct inode *inode, struct file *filep)
4052 {
4053     TRACE(("gdth_close()\n"));
4054     return 0;
4055 }
4056 
4057 static int ioc_event(void __user *arg)
4058 {
4059     gdth_ioctl_event evt;
4060     gdth_ha_str *ha;
4061     unsigned long flags;
4062 
4063     if (copy_from_user(&evt, arg, sizeof(gdth_ioctl_event)))
4064         return -EFAULT;
4065     ha = gdth_find_ha(evt.ionode);
4066     if (!ha)
4067         return -EFAULT;
4068 
4069     if (evt.erase == 0xff) {
4070         if (evt.event.event_source == ES_TEST)
4071             evt.event.event_data.size=sizeof(evt.event.event_data.eu.test); 
4072         else if (evt.event.event_source == ES_DRIVER)
4073             evt.event.event_data.size=sizeof(evt.event.event_data.eu.driver); 
4074         else if (evt.event.event_source == ES_SYNC)
4075             evt.event.event_data.size=sizeof(evt.event.event_data.eu.sync); 
4076         else
4077             evt.event.event_data.size=sizeof(evt.event.event_data.eu.async);
4078         spin_lock_irqsave(&ha->smp_lock, flags);
4079         gdth_store_event(ha, evt.event.event_source, evt.event.event_idx,
4080                          &evt.event.event_data);
4081         spin_unlock_irqrestore(&ha->smp_lock, flags);
4082     } else if (evt.erase == 0xfe) {
4083         gdth_clear_events();
4084     } else if (evt.erase == 0) {
4085         evt.handle = gdth_read_event(ha, evt.handle, &evt.event);
4086     } else {
4087         gdth_readapp_event(ha, evt.erase, &evt.event);
4088     }     
4089     if (copy_to_user(arg, &evt, sizeof(gdth_ioctl_event)))
4090         return -EFAULT;
4091     return 0;
4092 }
4093 
4094 static int ioc_lockdrv(void __user *arg)
4095 {
4096     gdth_ioctl_lockdrv ldrv;
4097     u8 i, j;
4098     unsigned long flags;
4099     gdth_ha_str *ha;
4100 
4101     if (copy_from_user(&ldrv, arg, sizeof(gdth_ioctl_lockdrv)))
4102         return -EFAULT;
4103     ha = gdth_find_ha(ldrv.ionode);
4104     if (!ha)
4105         return -EFAULT;
4106 
4107     for (i = 0; i < ldrv.drive_cnt && i < MAX_HDRIVES; ++i) {
4108         j = ldrv.drives[i];
4109         if (j >= MAX_HDRIVES || !ha->hdr[j].present)
4110             continue;
4111         if (ldrv.lock) {
4112             spin_lock_irqsave(&ha->smp_lock, flags);
4113             ha->hdr[j].lock = 1;
4114             spin_unlock_irqrestore(&ha->smp_lock, flags);
4115             gdth_wait_completion(ha, ha->bus_cnt, j);
4116         } else {
4117             spin_lock_irqsave(&ha->smp_lock, flags);
4118             ha->hdr[j].lock = 0;
4119             spin_unlock_irqrestore(&ha->smp_lock, flags);
4120             gdth_next(ha);
4121         }
4122     } 
4123     return 0;
4124 }
4125 
4126 static int ioc_resetdrv(void __user *arg, char *cmnd)
4127 {
4128     gdth_ioctl_reset res;
4129     gdth_cmd_str cmd;
4130     gdth_ha_str *ha;
4131     int rval;
4132 
4133     if (copy_from_user(&res, arg, sizeof(gdth_ioctl_reset)) ||
4134         res.number >= MAX_HDRIVES)
4135         return -EFAULT;
4136     ha = gdth_find_ha(res.ionode);
4137     if (!ha)
4138         return -EFAULT;
4139 
4140     if (!ha->hdr[res.number].present)
4141         return 0;
4142     memset(&cmd, 0, sizeof(gdth_cmd_str));
4143     cmd.Service = CACHESERVICE;
4144     cmd.OpCode = GDT_CLUST_RESET;
4145     if (ha->cache_feat & GDT_64BIT)
4146         cmd.u.cache64.DeviceNo = res.number;
4147     else
4148         cmd.u.cache.DeviceNo = res.number;
4149 
4150     rval = __gdth_execute(ha->sdev, &cmd, cmnd, 30, NULL);
4151     if (rval < 0)
4152         return rval;
4153     res.status = rval;
4154 
4155     if (copy_to_user(arg, &res, sizeof(gdth_ioctl_reset)))
4156         return -EFAULT;
4157     return 0;
4158 }
4159 
4160 static int ioc_general(void __user *arg, char *cmnd)
4161 {
4162     gdth_ioctl_general gen;
4163     char *buf = NULL;
4164     u64 paddr; 
4165     gdth_ha_str *ha;
4166     int rval;
4167 
4168     if (copy_from_user(&gen, arg, sizeof(gdth_ioctl_general)))
4169         return -EFAULT;
4170     ha = gdth_find_ha(gen.ionode);
4171     if (!ha)
4172         return -EFAULT;
4173 
4174     if (gen.data_len > INT_MAX)
4175         return -EINVAL;
4176     if (gen.sense_len > INT_MAX)
4177         return -EINVAL;
4178     if (gen.data_len + gen.sense_len > INT_MAX)
4179         return -EINVAL;
4180 
4181     if (gen.data_len + gen.sense_len != 0) {
4182         if (!(buf = gdth_ioctl_alloc(ha, gen.data_len + gen.sense_len,
4183                                      FALSE, &paddr)))
4184             return -EFAULT;
4185         if (copy_from_user(buf, arg + sizeof(gdth_ioctl_general),  
4186                            gen.data_len + gen.sense_len)) {
4187             gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
4188             return -EFAULT;
4189         }
4190 
4191         if (gen.command.OpCode == GDT_IOCTL) {
4192             gen.command.u.ioctl.p_param = paddr;
4193         } else if (gen.command.Service == CACHESERVICE) {
4194             if (ha->cache_feat & GDT_64BIT) {
4195                 /* copy elements from 32-bit IOCTL structure */
4196                 gen.command.u.cache64.BlockCnt = gen.command.u.cache.BlockCnt;
4197                 gen.command.u.cache64.BlockNo = gen.command.u.cache.BlockNo;
4198                 gen.command.u.cache64.DeviceNo = gen.command.u.cache.DeviceNo;
4199                 /* addresses */
4200                 if (ha->cache_feat & SCATTER_GATHER) {
4201                     gen.command.u.cache64.DestAddr = (u64)-1;
4202                     gen.command.u.cache64.sg_canz = 1;
4203                     gen.command.u.cache64.sg_lst[0].sg_ptr = paddr;
4204                     gen.command.u.cache64.sg_lst[0].sg_len = gen.data_len;
4205                     gen.command.u.cache64.sg_lst[1].sg_len = 0;
4206                 } else {
4207                     gen.command.u.cache64.DestAddr = paddr;
4208                     gen.command.u.cache64.sg_canz = 0;
4209                 }
4210             } else {
4211                 if (ha->cache_feat & SCATTER_GATHER) {
4212                     gen.command.u.cache.DestAddr = 0xffffffff;
4213                     gen.command.u.cache.sg_canz = 1;
4214                     gen.command.u.cache.sg_lst[0].sg_ptr = (u32)paddr;
4215                     gen.command.u.cache.sg_lst[0].sg_len = gen.data_len;
4216                     gen.command.u.cache.sg_lst[1].sg_len = 0;
4217                 } else {
4218                     gen.command.u.cache.DestAddr = paddr;
4219                     gen.command.u.cache.sg_canz = 0;
4220                 }
4221             }
4222         } else if (gen.command.Service == SCSIRAWSERVICE) {
4223             if (ha->raw_feat & GDT_64BIT) {
4224                 /* copy elements from 32-bit IOCTL structure */
4225                 char cmd[16];
4226                 gen.command.u.raw64.sense_len = gen.command.u.raw.sense_len;
4227                 gen.command.u.raw64.bus = gen.command.u.raw.bus;
4228                 gen.command.u.raw64.lun = gen.command.u.raw.lun;
4229                 gen.command.u.raw64.target = gen.command.u.raw.target;
4230                 memcpy(cmd, gen.command.u.raw.cmd, 16);
4231                 memcpy(gen.command.u.raw64.cmd, cmd, 16);
4232                 gen.command.u.raw64.clen = gen.command.u.raw.clen;
4233                 gen.command.u.raw64.sdlen = gen.command.u.raw.sdlen;
4234                 gen.command.u.raw64.direction = gen.command.u.raw.direction;
4235                 /* addresses */
4236                 if (ha->raw_feat & SCATTER_GATHER) {
4237                     gen.command.u.raw64.sdata = (u64)-1;
4238                     gen.command.u.raw64.sg_ranz = 1;
4239                     gen.command.u.raw64.sg_lst[0].sg_ptr = paddr;
4240                     gen.command.u.raw64.sg_lst[0].sg_len = gen.data_len;
4241                     gen.command.u.raw64.sg_lst[1].sg_len = 0;
4242                 } else {
4243                     gen.command.u.raw64.sdata = paddr;
4244                     gen.command.u.raw64.sg_ranz = 0;
4245                 }
4246                 gen.command.u.raw64.sense_data = paddr + gen.data_len;
4247             } else {
4248                 if (ha->raw_feat & SCATTER_GATHER) {
4249                     gen.command.u.raw.sdata = 0xffffffff;
4250                     gen.command.u.raw.sg_ranz = 1;
4251                     gen.command.u.raw.sg_lst[0].sg_ptr = (u32)paddr;
4252                     gen.command.u.raw.sg_lst[0].sg_len = gen.data_len;
4253                     gen.command.u.raw.sg_lst[1].sg_len = 0;
4254                 } else {
4255                     gen.command.u.raw.sdata = paddr;
4256                     gen.command.u.raw.sg_ranz = 0;
4257                 }
4258                 gen.command.u.raw.sense_data = (u32)paddr + gen.data_len;
4259             }
4260         } else {
4261             gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
4262             return -EFAULT;
4263         }
4264     }
4265 
4266     rval = __gdth_execute(ha->sdev, &gen.command, cmnd, gen.timeout, &gen.info);
4267     if (rval < 0) {
4268         gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
4269         return rval;
4270     }
4271     gen.status = rval;
4272 
4273     if (copy_to_user(arg + sizeof(gdth_ioctl_general), buf, 
4274                      gen.data_len + gen.sense_len)) {
4275         gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
4276         return -EFAULT; 
4277     } 
4278     if (copy_to_user(arg, &gen, 
4279         sizeof(gdth_ioctl_general) - sizeof(gdth_cmd_str))) {
4280         gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
4281         return -EFAULT;
4282     }
4283     gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
4284     return 0;
4285 }
4286  
4287 static int ioc_hdrlist(void __user *arg, char *cmnd)
4288 {
4289     gdth_ioctl_rescan *rsc;
4290     gdth_cmd_str *cmd;
4291     gdth_ha_str *ha;
4292     u8 i;
4293     int rc = -ENOMEM;
4294     u32 cluster_type = 0;
4295 
4296     rsc = kmalloc(sizeof(*rsc), GFP_KERNEL);
4297     cmd = kmalloc(sizeof(*cmd), GFP_KERNEL);
4298     if (!rsc || !cmd)
4299         goto free_fail;
4300 
4301     if (copy_from_user(rsc, arg, sizeof(gdth_ioctl_rescan)) ||
4302         (NULL == (ha = gdth_find_ha(rsc->ionode)))) {
4303         rc = -EFAULT;
4304         goto free_fail;
4305     }
4306     memset(cmd, 0, sizeof(gdth_cmd_str));
4307    
4308     for (i = 0; i < MAX_HDRIVES; ++i) { 
4309         if (!ha->hdr[i].present) {
4310             rsc->hdr_list[i].bus = 0xff; 
4311             continue;
4312         } 
4313         rsc->hdr_list[i].bus = ha->virt_bus;
4314         rsc->hdr_list[i].target = i;
4315         rsc->hdr_list[i].lun = 0;
4316         rsc->hdr_list[i].cluster_type = ha->hdr[i].cluster_type;
4317         if (ha->hdr[i].cluster_type & CLUSTER_DRIVE) { 
4318             cmd->Service = CACHESERVICE;
4319             cmd->OpCode = GDT_CLUST_INFO;
4320             if (ha->cache_feat & GDT_64BIT)
4321                 cmd->u.cache64.DeviceNo = i;
4322             else
4323                 cmd->u.cache.DeviceNo = i;
4324             if (__gdth_execute(ha->sdev, cmd, cmnd, 30, &cluster_type) == S_OK)
4325                 rsc->hdr_list[i].cluster_type = cluster_type;
4326         }
4327     } 
4328 
4329     if (copy_to_user(arg, rsc, sizeof(gdth_ioctl_rescan)))
4330         rc = -EFAULT;
4331     else
4332         rc = 0;
4333 
4334 free_fail:
4335     kfree(rsc);
4336     kfree(cmd);
4337     return rc;
4338 }
4339 
4340 static int ioc_rescan(void __user *arg, char *cmnd)
4341 {
4342     gdth_ioctl_rescan *rsc;
4343     gdth_cmd_str *cmd;
4344     u16 i, status, hdr_cnt;
4345     u32 info;
4346     int cyls, hds, secs;
4347     int rc = -ENOMEM;
4348     unsigned long flags;
4349     gdth_ha_str *ha; 
4350 
4351     rsc = kmalloc(sizeof(*rsc), GFP_KERNEL);
4352     cmd = kmalloc(sizeof(*cmd), GFP_KERNEL);
4353     if (!cmd || !rsc)
4354         goto free_fail;
4355 
4356     if (copy_from_user(rsc, arg, sizeof(gdth_ioctl_rescan)) ||
4357         (NULL == (ha = gdth_find_ha(rsc->ionode)))) {
4358         rc = -EFAULT;
4359         goto free_fail;
4360     }
4361     memset(cmd, 0, sizeof(gdth_cmd_str));
4362 
4363     if (rsc->flag == 0) {
4364         /* old method: re-init. cache service */
4365         cmd->Service = CACHESERVICE;
4366         if (ha->cache_feat & GDT_64BIT) {
4367             cmd->OpCode = GDT_X_INIT_HOST;
4368             cmd->u.cache64.DeviceNo = LINUX_OS;
4369         } else {
4370             cmd->OpCode = GDT_INIT;
4371             cmd->u.cache.DeviceNo = LINUX_OS;
4372         }
4373 
4374         status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
4375         i = 0;
4376         hdr_cnt = (status == S_OK ? (u16)info : 0);
4377     } else {
4378         i = rsc->hdr_no;
4379         hdr_cnt = i + 1;
4380     }
4381 
4382     for (; i < hdr_cnt && i < MAX_HDRIVES; ++i) {
4383         cmd->Service = CACHESERVICE;
4384         cmd->OpCode = GDT_INFO;
4385         if (ha->cache_feat & GDT_64BIT) 
4386             cmd->u.cache64.DeviceNo = i;
4387         else 
4388             cmd->u.cache.DeviceNo = i;
4389 
4390         status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
4391 
4392         spin_lock_irqsave(&ha->smp_lock, flags);
4393         rsc->hdr_list[i].bus = ha->virt_bus;
4394         rsc->hdr_list[i].target = i;
4395         rsc->hdr_list[i].lun = 0;
4396         if (status != S_OK) {
4397             ha->hdr[i].present = FALSE;
4398         } else {
4399             ha->hdr[i].present = TRUE;
4400             ha->hdr[i].size = info;
4401             /* evaluate mapping */
4402             ha->hdr[i].size &= ~SECS32;
4403             gdth_eval_mapping(ha->hdr[i].size,&cyls,&hds,&secs); 
4404             ha->hdr[i].heads = hds;
4405             ha->hdr[i].secs = secs;
4406             /* round size */
4407             ha->hdr[i].size = cyls * hds * secs;
4408         }
4409         spin_unlock_irqrestore(&ha->smp_lock, flags);
4410         if (status != S_OK)
4411             continue; 
4412         
4413         /* extended info, if GDT_64BIT, for drives > 2 TB */
4414         /* but we need ha->info2, not yet stored in scp->SCp */
4415 
4416         /* devtype, cluster info, R/W attribs */
4417         cmd->Service = CACHESERVICE;
4418         cmd->OpCode = GDT_DEVTYPE;
4419         if (ha->cache_feat & GDT_64BIT) 
4420             cmd->u.cache64.DeviceNo = i;
4421         else
4422             cmd->u.cache.DeviceNo = i;
4423 
4424         status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
4425 
4426         spin_lock_irqsave(&ha->smp_lock, flags);
4427         ha->hdr[i].devtype = (status == S_OK ? (u16)info : 0);
4428         spin_unlock_irqrestore(&ha->smp_lock, flags);
4429 
4430         cmd->Service = CACHESERVICE;
4431         cmd->OpCode = GDT_CLUST_INFO;
4432         if (ha->cache_feat & GDT_64BIT) 
4433             cmd->u.cache64.DeviceNo = i;
4434         else
4435             cmd->u.cache.DeviceNo = i;
4436 
4437         status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
4438 
4439         spin_lock_irqsave(&ha->smp_lock, flags);
4440         ha->hdr[i].cluster_type = 
4441             ((status == S_OK && !shared_access) ? (u16)info : 0);
4442         spin_unlock_irqrestore(&ha->smp_lock, flags);
4443         rsc->hdr_list[i].cluster_type = ha->hdr[i].cluster_type;
4444 
4445         cmd->Service = CACHESERVICE;
4446         cmd->OpCode = GDT_RW_ATTRIBS;
4447         if (ha->cache_feat & GDT_64BIT) 
4448             cmd->u.cache64.DeviceNo = i;
4449         else
4450             cmd->u.cache.DeviceNo = i;
4451 
4452         status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
4453 
4454         spin_lock_irqsave(&ha->smp_lock, flags);
4455         ha->hdr[i].rw_attribs = (status == S_OK ? (u16)info : 0);
4456         spin_unlock_irqrestore(&ha->smp_lock, flags);
4457     }
4458  
4459     if (copy_to_user(arg, rsc, sizeof(gdth_ioctl_rescan)))
4460         rc = -EFAULT;
4461     else
4462         rc = 0;
4463 
4464 free_fail:
4465     kfree(rsc);
4466     kfree(cmd);
4467     return rc;
4468 }
4469   
4470 static int gdth_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
4471 {
4472     gdth_ha_str *ha; 
4473     Scsi_Cmnd *scp;
4474     unsigned long flags;
4475     char cmnd[MAX_COMMAND_SIZE];   
4476     void __user *argp = (void __user *)arg;
4477 
4478     memset(cmnd, 0xff, 12);
4479     
4480     TRACE(("gdth_ioctl() cmd 0x%x\n", cmd));
4481  
4482     switch (cmd) {
4483       case GDTIOCTL_CTRCNT:
4484       { 
4485         int cnt = gdth_ctr_count;
4486         if (put_user(cnt, (int __user *)argp))
4487                 return -EFAULT;
4488         break;
4489       }
4490 
4491       case GDTIOCTL_DRVERS:
4492       { 
4493         int ver = (GDTH_VERSION<<8) | GDTH_SUBVERSION;
4494         if (put_user(ver, (int __user *)argp))
4495                 return -EFAULT;
4496         break;
4497       }
4498       
4499       case GDTIOCTL_OSVERS:
4500       { 
4501         gdth_ioctl_osvers osv; 
4502 
4503         osv.version = (u8)(LINUX_VERSION_CODE >> 16);
4504         osv.subversion = (u8)(LINUX_VERSION_CODE >> 8);
4505         osv.revision = (u16)(LINUX_VERSION_CODE & 0xff);
4506         if (copy_to_user(argp, &osv, sizeof(gdth_ioctl_osvers)))
4507                 return -EFAULT;
4508         break;
4509       }
4510 
4511       case GDTIOCTL_CTRTYPE:
4512       { 
4513         gdth_ioctl_ctrtype ctrt;
4514         
4515         if (copy_from_user(&ctrt, argp, sizeof(gdth_ioctl_ctrtype)) ||
4516             (NULL == (ha = gdth_find_ha(ctrt.ionode))))
4517             return -EFAULT;
4518 
4519         if (ha->type == GDT_ISA || ha->type == GDT_EISA) {
4520             ctrt.type = (u8)((ha->stype>>20) - 0x10);
4521         } else {
4522             if (ha->type != GDT_PCIMPR) {
4523                 ctrt.type = (u8)((ha->stype<<4) + 6);
4524             } else {
4525                 ctrt.type = 
4526                     (ha->oem_id == OEM_ID_INTEL ? 0xfd : 0xfe);
4527                 if (ha->stype >= 0x300)
4528                     ctrt.ext_type = 0x6000 | ha->pdev->subsystem_device;
4529                 else 
4530                     ctrt.ext_type = 0x6000 | ha->stype;
4531             }
4532             ctrt.device_id = ha->pdev->device;
4533             ctrt.sub_device_id = ha->pdev->subsystem_device;
4534         }
4535         ctrt.info = ha->brd_phys;
4536         ctrt.oem_id = ha->oem_id;
4537         if (copy_to_user(argp, &ctrt, sizeof(gdth_ioctl_ctrtype)))
4538             return -EFAULT;
4539         break;
4540       }
4541         
4542       case GDTIOCTL_GENERAL:
4543         return ioc_general(argp, cmnd);
4544 
4545       case GDTIOCTL_EVENT:
4546         return ioc_event(argp);
4547 
4548       case GDTIOCTL_LOCKDRV:
4549         return ioc_lockdrv(argp);
4550 
4551       case GDTIOCTL_LOCKCHN:
4552       {
4553         gdth_ioctl_lockchn lchn;
4554         u8 i, j;
4555 
4556         if (copy_from_user(&lchn, argp, sizeof(gdth_ioctl_lockchn)) ||
4557             (NULL == (ha = gdth_find_ha(lchn.ionode))))
4558             return -EFAULT;
4559 
4560         i = lchn.channel;
4561         if (i < ha->bus_cnt) {
4562             if (lchn.lock) {
4563                 spin_lock_irqsave(&ha->smp_lock, flags);
4564                 ha->raw[i].lock = 1;
4565                 spin_unlock_irqrestore(&ha->smp_lock, flags);
4566                 for (j = 0; j < ha->tid_cnt; ++j)
4567                     gdth_wait_completion(ha, i, j);
4568             } else {
4569                 spin_lock_irqsave(&ha->smp_lock, flags);
4570                 ha->raw[i].lock = 0;
4571                 spin_unlock_irqrestore(&ha->smp_lock, flags);
4572                 for (j = 0; j < ha->tid_cnt; ++j)
4573                     gdth_next(ha);
4574             }
4575         } 
4576         break;
4577       }
4578 
4579       case GDTIOCTL_RESCAN:
4580         return ioc_rescan(argp, cmnd);
4581 
4582       case GDTIOCTL_HDRLIST:
4583         return ioc_hdrlist(argp, cmnd);
4584 
4585       case GDTIOCTL_RESET_BUS:
4586       {
4587         gdth_ioctl_reset res;
4588         int rval;
4589 
4590         if (copy_from_user(&res, argp, sizeof(gdth_ioctl_reset)) ||
4591             (NULL == (ha = gdth_find_ha(res.ionode))))
4592             return -EFAULT;
4593 
4594         scp  = kzalloc(sizeof(*scp), GFP_KERNEL);
4595         if (!scp)
4596             return -ENOMEM;
4597         scp->device = ha->sdev;
4598         scp->cmd_len = 12;
4599         scp->device->channel = res.number;
4600         rval = gdth_eh_bus_reset(scp);
4601         res.status = (rval == SUCCESS ? S_OK : S_GENERR);
4602         kfree(scp);
4603 
4604         if (copy_to_user(argp, &res, sizeof(gdth_ioctl_reset)))
4605             return -EFAULT;
4606         break;
4607       }
4608 
4609       case GDTIOCTL_RESET_DRV:
4610         return ioc_resetdrv(argp, cmnd);
4611 
4612       default:
4613         break; 
4614     }
4615     return 0;
4616 }
4617 
4618 static long gdth_unlocked_ioctl(struct file *file, unsigned int cmd,
4619                                 unsigned long arg)
4620 {
4621         int ret;
4622 
4623         mutex_lock(&gdth_mutex);
4624         ret = gdth_ioctl(file, cmd, arg);
4625         mutex_unlock(&gdth_mutex);
4626 
4627         return ret;
4628 }
4629 
4630 /* flush routine */
4631 static void gdth_flush(gdth_ha_str *ha)
4632 {
4633     int             i;
4634     gdth_cmd_str    gdtcmd;
4635     char            cmnd[MAX_COMMAND_SIZE];   
4636     memset(cmnd, 0xff, MAX_COMMAND_SIZE);
4637 
4638     TRACE2(("gdth_flush() hanum %d\n", ha->hanum));
4639 
4640     for (i = 0; i < MAX_HDRIVES; ++i) {
4641         if (ha->hdr[i].present) {
4642             gdtcmd.BoardNode = LOCALBOARD;
4643             gdtcmd.Service = CACHESERVICE;
4644             gdtcmd.OpCode = GDT_FLUSH;
4645             if (ha->cache_feat & GDT_64BIT) { 
4646                 gdtcmd.u.cache64.DeviceNo = i;
4647                 gdtcmd.u.cache64.BlockNo = 1;
4648                 gdtcmd.u.cache64.sg_canz = 0;
4649             } else {
4650                 gdtcmd.u.cache.DeviceNo = i;
4651                 gdtcmd.u.cache.BlockNo = 1;
4652                 gdtcmd.u.cache.sg_canz = 0;
4653             }
4654             TRACE2(("gdth_flush(): flush ha %d drive %d\n", ha->hanum, i));
4655 
4656             gdth_execute(ha->shost, &gdtcmd, cmnd, 30, NULL);
4657         }
4658     }
4659 }
4660 
4661 /* configure lun */
4662 static int gdth_slave_configure(struct scsi_device *sdev)
4663 {
4664     scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
4665     sdev->skip_ms_page_3f = 1;
4666     sdev->skip_ms_page_8 = 1;
4667     return 0;
4668 }
4669 
4670 static struct scsi_host_template gdth_template = {
4671         .name                   = "GDT SCSI Disk Array Controller",
4672         .info                   = gdth_info, 
4673         .queuecommand           = gdth_queuecommand,
4674         .eh_bus_reset_handler   = gdth_eh_bus_reset,
4675         .slave_configure        = gdth_slave_configure,
4676         .bios_param             = gdth_bios_param,
4677         .show_info              = gdth_show_info,
4678         .write_info             = gdth_set_info,
4679         .eh_timed_out           = gdth_timed_out,
4680         .proc_name              = "gdth",
4681         .can_queue              = GDTH_MAXCMDS,
4682         .this_id                = -1,
4683         .sg_tablesize           = GDTH_MAXSG,
4684         .cmd_per_lun            = GDTH_MAXC_P_L,
4685         .unchecked_isa_dma      = 1,
4686         .use_clustering         = ENABLE_CLUSTERING,
4687         .no_write_same          = 1,
4688 };
4689 
4690 #ifdef CONFIG_ISA
4691 static int __init gdth_isa_probe_one(u32 isa_bios)
4692 {
4693         struct Scsi_Host *shp;
4694         gdth_ha_str *ha;
4695         dma_addr_t scratch_dma_handle = 0;
4696         int error, i;
4697 
4698         if (!gdth_search_isa(isa_bios))
4699                 return -ENXIO;
4700 
4701         shp = scsi_host_alloc(&gdth_template, sizeof(gdth_ha_str));
4702         if (!shp)
4703                 return -ENOMEM;
4704         ha = shost_priv(shp);
4705 
4706         error = -ENODEV;
4707         if (!gdth_init_isa(isa_bios,ha))
4708                 goto out_host_put;
4709 
4710         /* controller found and initialized */
4711         printk("Configuring GDT-ISA HA at BIOS 0x%05X IRQ %u DRQ %u\n",
4712                 isa_bios, ha->irq, ha->drq);
4713 
4714         error = request_irq(ha->irq, gdth_interrupt, 0, "gdth", ha);
4715         if (error) {
4716                 printk("GDT-ISA: Unable to allocate IRQ\n");
4717                 goto out_host_put;
4718         }
4719 
4720         error = request_dma(ha->drq, "gdth");
4721         if (error) {
4722                 printk("GDT-ISA: Unable to allocate DMA channel\n");
4723                 goto out_free_irq;
4724         }
4725 
4726         set_dma_mode(ha->drq,DMA_MODE_CASCADE);
4727         enable_dma(ha->drq);
4728         shp->unchecked_isa_dma = 1;
4729         shp->irq = ha->irq;
4730         shp->dma_channel = ha->drq;
4731 
4732         ha->hanum = gdth_ctr_count++;
4733         ha->shost = shp;
4734 
4735         ha->pccb = &ha->cmdext;
4736         ha->ccb_phys = 0L;
4737         ha->pdev = NULL;
4738 
4739         error = -ENOMEM;
4740 
4741         ha->pscratch = pci_alloc_consistent(ha->pdev, GDTH_SCRATCH,
4742                                                 &scratch_dma_handle);
4743         if (!ha->pscratch)
4744                 goto out_dec_counters;
4745         ha->scratch_phys = scratch_dma_handle;
4746 
4747         ha->pmsg = pci_alloc_consistent(ha->pdev, sizeof(gdth_msg_str),
4748                                                 &scratch_dma_handle);
4749         if (!ha->pmsg)
4750                 goto out_free_pscratch;
4751         ha->msg_phys = scratch_dma_handle;
4752 
4753 #ifdef INT_COAL
4754         ha->coal_stat = pci_alloc_consistent(ha->pdev,
4755                                 sizeof(gdth_coal_status) * MAXOFFSETS,
4756                                 &scratch_dma_handle);
4757         if (!ha->coal_stat)
4758                 goto out_free_pmsg;
4759         ha->coal_stat_phys = scratch_dma_handle;
4760 #endif
4761 
4762         ha->scratch_busy = FALSE;
4763         ha->req_first = NULL;
4764         ha->tid_cnt = MAX_HDRIVES;
4765         if (max_ids > 0 && max_ids < ha->tid_cnt)
4766                 ha->tid_cnt = max_ids;
4767         for (i = 0; i < GDTH_MAXCMDS; ++i)
4768                 ha->cmd_tab[i].cmnd = UNUSED_CMND;
4769         ha->scan_mode = rescan ? 0x10 : 0;
4770 
4771         error = -ENODEV;
4772         if (!gdth_search_drives(ha)) {
4773                 printk("GDT-ISA: Error during device scan\n");
4774                 goto out_free_coal_stat;
4775         }
4776 
4777         if (hdr_channel < 0 || hdr_channel > ha->bus_cnt)
4778                 hdr_channel = ha->bus_cnt;
4779         ha->virt_bus = hdr_channel;
4780 
4781         if (ha->cache_feat & ha->raw_feat & ha->screen_feat & GDT_64BIT)
4782                 shp->max_cmd_len = 16;
4783 
4784         shp->max_id      = ha->tid_cnt;
4785         shp->max_lun     = MAXLUN;
4786         shp->max_channel = ha->bus_cnt;
4787 
4788         spin_lock_init(&ha->smp_lock);
4789         gdth_enable_int(ha);
4790 
4791         error = scsi_add_host(shp, NULL);
4792         if (error)
4793                 goto out_free_coal_stat;
4794         list_add_tail(&ha->list, &gdth_instances);
4795         gdth_timer_init();
4796 
4797         scsi_scan_host(shp);
4798 
4799         return 0;
4800 
4801  out_free_coal_stat:
4802 #ifdef INT_COAL
4803         pci_free_consistent(ha->pdev, sizeof(gdth_coal_status) * MAXOFFSETS,
4804                                 ha->coal_stat, ha->coal_stat_phys);
4805  out_free_pmsg:
4806 #endif
4807         pci_free_consistent(ha->pdev, sizeof(gdth_msg_str),
4808                                 ha->pmsg, ha->msg_phys);
4809  out_free_pscratch:
4810         pci_free_consistent(ha->pdev, GDTH_SCRATCH,
4811                                 ha->pscratch, ha->scratch_phys);
4812  out_dec_counters:
4813         gdth_ctr_count--;
4814  out_free_irq:
4815         free_irq(ha->irq, ha);
4816  out_host_put:
4817         scsi_host_put(shp);
4818         return error;
4819 }
4820 #endif /* CONFIG_ISA */
4821 
4822 #ifdef CONFIG_EISA
4823 static int __init gdth_eisa_probe_one(u16 eisa_slot)
4824 {
4825         struct Scsi_Host *shp;
4826         gdth_ha_str *ha;
4827         dma_addr_t scratch_dma_handle = 0;
4828         int error, i;
4829 
4830         if (!gdth_search_eisa(eisa_slot))
4831                 return -ENXIO;
4832 
4833         shp = scsi_host_alloc(&gdth_template, sizeof(gdth_ha_str));
4834         if (!shp)
4835                 return -ENOMEM;
4836         ha = shost_priv(shp);
4837 
4838         error = -ENODEV;
4839         if (!gdth_init_eisa(eisa_slot,ha))
4840                 goto out_host_put;
4841 
4842         /* controller found and initialized */
4843         printk("Configuring GDT-EISA HA at Slot %d IRQ %u\n",
4844                 eisa_slot >> 12, ha->irq);
4845 
4846         error = request_irq(ha->irq, gdth_interrupt, 0, "gdth", ha);
4847         if (error) {
4848                 printk("GDT-EISA: Unable to allocate IRQ\n");
4849                 goto out_host_put;
4850         }
4851 
4852         shp->unchecked_isa_dma = 0;
4853         shp->irq = ha->irq;
4854         shp->dma_channel = 0xff;
4855 
4856         ha->hanum = gdth_ctr_count++;
4857         ha->shost = shp;
4858 
4859         TRACE2(("EISA detect Bus 0: hanum %d\n", ha->hanum));
4860 
4861         ha->pccb = &ha->cmdext;
4862         ha->ccb_phys = 0L;
4863 
4864         error = -ENOMEM;
4865 
4866         ha->pdev = NULL;
4867         ha->pscratch = pci_alloc_consistent(ha->pdev, GDTH_SCRATCH,
4868                                                 &scratch_dma_handle);
4869         if (!ha->pscratch)
4870                 goto out_free_irq;
4871         ha->scratch_phys = scratch_dma_handle;
4872 
4873         ha->pmsg = pci_alloc_consistent(ha->pdev, sizeof(gdth_msg_str),
4874                                                 &scratch_dma_handle);
4875         if (!ha->pmsg)
4876                 goto out_free_pscratch;
4877         ha->msg_phys = scratch_dma_handle;
4878 
4879 #ifdef INT_COAL
4880         ha->coal_stat = pci_alloc_consistent(ha->pdev,
4881                         sizeof(gdth_coal_status) * MAXOFFSETS,
4882                         &scratch_dma_handle);
4883         if (!ha->coal_stat)
4884                 goto out_free_pmsg;
4885         ha->coal_stat_phys = scratch_dma_handle;
4886 #endif
4887 
4888         ha->ccb_phys = pci_map_single(ha->pdev,ha->pccb,
4889                         sizeof(gdth_cmd_str), PCI_DMA_BIDIRECTIONAL);
4890         if (!ha->ccb_phys)
4891                 goto out_free_coal_stat;
4892 
4893         ha->scratch_busy = FALSE;
4894         ha->req_first = NULL;
4895         ha->tid_cnt = MAX_HDRIVES;
4896         if (max_ids > 0 && max_ids < ha->tid_cnt)
4897                 ha->tid_cnt = max_ids;
4898         for (i = 0; i < GDTH_MAXCMDS; ++i)
4899                 ha->cmd_tab[i].cmnd = UNUSED_CMND;
4900         ha->scan_mode = rescan ? 0x10 : 0;
4901 
4902         if (!gdth_search_drives(ha)) {
4903                 printk("GDT-EISA: Error during device scan\n");
4904                 error = -ENODEV;
4905                 goto out_free_ccb_phys;
4906         }
4907 
4908         if (hdr_channel < 0 || hdr_channel > ha->bus_cnt)
4909                 hdr_channel = ha->bus_cnt;
4910         ha->virt_bus = hdr_channel;
4911 
4912         if (ha->cache_feat & ha->raw_feat & ha->screen_feat & GDT_64BIT)
4913                 shp->max_cmd_len = 16;
4914 
4915         shp->max_id      = ha->tid_cnt;
4916         shp->max_lun     = MAXLUN;
4917         shp->max_channel = ha->bus_cnt;
4918 
4919         spin_lock_init(&ha->smp_lock);
4920         gdth_enable_int(ha);
4921 
4922         error = scsi_add_host(shp, NULL);
4923         if (error)
4924                 goto out_free_ccb_phys;
4925         list_add_tail(&ha->list, &gdth_instances);
4926         gdth_timer_init();
4927 
4928         scsi_scan_host(shp);
4929 
4930         return 0;
4931 
4932  out_free_ccb_phys:
4933         pci_unmap_single(ha->pdev,ha->ccb_phys, sizeof(gdth_cmd_str),
4934                         PCI_DMA_BIDIRECTIONAL);
4935  out_free_coal_stat:
4936 #ifdef INT_COAL
4937         pci_free_consistent(ha->pdev, sizeof(gdth_coal_status) * MAXOFFSETS,
4938                                 ha->coal_stat, ha->coal_stat_phys);
4939  out_free_pmsg:
4940 #endif
4941         pci_free_consistent(ha->pdev, sizeof(gdth_msg_str),
4942                                 ha->pmsg, ha->msg_phys);
4943  out_free_pscratch:
4944         pci_free_consistent(ha->pdev, GDTH_SCRATCH,
4945                                 ha->pscratch, ha->scratch_phys);
4946  out_free_irq:
4947         free_irq(ha->irq, ha);
4948         gdth_ctr_count--;
4949  out_host_put:
4950         scsi_host_put(shp);
4951         return error;
4952 }
4953 #endif /* CONFIG_EISA */
4954 
4955 #ifdef CONFIG_PCI
4956 static int gdth_pci_probe_one(gdth_pci_str *pcistr, gdth_ha_str **ha_out)
4957 {
4958         struct Scsi_Host *shp;
4959         gdth_ha_str *ha;
4960         dma_addr_t scratch_dma_handle = 0;
4961         int error, i;
4962         struct pci_dev *pdev = pcistr->pdev;
4963 
4964         *ha_out = NULL;
4965 
4966         shp = scsi_host_alloc(&gdth_template, sizeof(gdth_ha_str));
4967         if (!shp)
4968                 return -ENOMEM;
4969         ha = shost_priv(shp);
4970 
4971         error = -ENODEV;
4972         if (!gdth_init_pci(pdev, pcistr, ha))
4973                 goto out_host_put;
4974 
4975         /* controller found and initialized */
4976         printk("Configuring GDT-PCI HA at %d/%d IRQ %u\n",
4977                 pdev->bus->number,
4978                 PCI_SLOT(pdev->devfn),
4979                 ha->irq);
4980 
4981         error = request_irq(ha->irq, gdth_interrupt,
4982                                 IRQF_SHARED, "gdth", ha);
4983         if (error) {
4984                 printk("GDT-PCI: Unable to allocate IRQ\n");
4985                 goto out_host_put;
4986         }
4987 
4988         shp->unchecked_isa_dma = 0;
4989         shp->irq = ha->irq;
4990         shp->dma_channel = 0xff;
4991 
4992         ha->hanum = gdth_ctr_count++;
4993         ha->shost = shp;
4994 
4995         ha->pccb = &ha->cmdext;
4996         ha->ccb_phys = 0L;
4997 
4998         error = -ENOMEM;
4999 
5000         ha->pscratch = pci_alloc_consistent(ha->pdev, GDTH_SCRATCH,
5001                                                 &scratch_dma_handle);
5002         if (!ha->pscratch)
5003                 goto out_free_irq;
5004         ha->scratch_phys = scratch_dma_handle;
5005 
5006         ha->pmsg = pci_alloc_consistent(ha->pdev, sizeof(gdth_msg_str),
5007                                         &scratch_dma_handle);
5008         if (!ha->pmsg)
5009                 goto out_free_pscratch;
5010         ha->msg_phys = scratch_dma_handle;
5011 
5012 #ifdef INT_COAL
5013         ha->coal_stat = pci_alloc_consistent(ha->pdev,
5014                         sizeof(gdth_coal_status) * MAXOFFSETS,
5015                         &scratch_dma_handle);
5016         if (!ha->coal_stat)
5017                 goto out_free_pmsg;
5018         ha->coal_stat_phys = scratch_dma_handle;
5019 #endif
5020 
5021         ha->scratch_busy = FALSE;
5022         ha->req_first = NULL;
5023         ha->tid_cnt = pdev->device >= 0x200 ? MAXID : MAX_HDRIVES;
5024         if (max_ids > 0 && max_ids < ha->tid_cnt)
5025                 ha->tid_cnt = max_ids;
5026         for (i = 0; i < GDTH_MAXCMDS; ++i)
5027                 ha->cmd_tab[i].cmnd = UNUSED_CMND;
5028         ha->scan_mode = rescan ? 0x10 : 0;
5029 
5030         error = -ENODEV;
5031         if (!gdth_search_drives(ha)) {
5032                 printk("GDT-PCI %d: Error during device scan\n", ha->hanum);
5033                 goto out_free_coal_stat;
5034         }
5035 
5036         if (hdr_channel < 0 || hdr_channel > ha->bus_cnt)
5037                 hdr_channel = ha->bus_cnt;
5038         ha->virt_bus = hdr_channel;
5039 
5040         /* 64-bit DMA only supported from FW >= x.43 */
5041         if (!(ha->cache_feat & ha->raw_feat & ha->screen_feat & GDT_64BIT) ||
5042             !ha->dma64_support) {
5043                 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
5044                         printk(KERN_WARNING "GDT-PCI %d: "
5045                                 "Unable to set 32-bit DMA\n", ha->hanum);
5046                                 goto out_free_coal_stat;
5047                 }
5048         } else {
5049                 shp->max_cmd_len = 16;
5050                 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
5051                         printk("GDT-PCI %d: 64-bit DMA enabled\n", ha->hanum);
5052                 } else if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
5053                         printk(KERN_WARNING "GDT-PCI %d: "
5054                                 "Unable to set 64/32-bit DMA\n", ha->hanum);
5055                         goto out_free_coal_stat;
5056                 }
5057         }
5058 
5059         shp->max_id      = ha->tid_cnt;
5060         shp->max_lun     = MAXLUN;
5061         shp->max_channel = ha->bus_cnt;
5062 
5063         spin_lock_init(&ha->smp_lock);
5064         gdth_enable_int(ha);
5065 
5066         error = scsi_add_host(shp, &pdev->dev);
5067         if (error)
5068                 goto out_free_coal_stat;
5069         list_add_tail(&ha->list, &gdth_instances);
5070 
5071         pci_set_drvdata(ha->pdev, ha);
5072         gdth_timer_init();
5073 
5074         scsi_scan_host(shp);
5075 
5076         *ha_out = ha;
5077 
5078         return 0;
5079 
5080  out_free_coal_stat:
5081 #ifdef INT_COAL
5082         pci_free_consistent(ha->pdev, sizeof(gdth_coal_status) * MAXOFFSETS,
5083                                 ha->coal_stat, ha->coal_stat_phys);
5084  out_free_pmsg:
5085 #endif
5086         pci_free_consistent(ha->pdev, sizeof(gdth_msg_str),
5087                                 ha->pmsg, ha->msg_phys);
5088  out_free_pscratch:
5089         pci_free_consistent(ha->pdev, GDTH_SCRATCH,
5090                                 ha->pscratch, ha->scratch_phys);
5091  out_free_irq:
5092         free_irq(ha->irq, ha);
5093         gdth_ctr_count--;
5094  out_host_put:
5095         scsi_host_put(shp);
5096         return error;
5097 }
5098 #endif /* CONFIG_PCI */
5099 
5100 static void gdth_remove_one(gdth_ha_str *ha)
5101 {
5102         struct Scsi_Host *shp = ha->shost;
5103 
5104         TRACE2(("gdth_remove_one()\n"));
5105 
5106         scsi_remove_host(shp);
5107 
5108         gdth_flush(ha);
5109 
5110         if (ha->sdev) {
5111                 scsi_free_host_dev(ha->sdev);
5112                 ha->sdev = NULL;
5113         }
5114 
5115         if (shp->irq)
5116                 free_irq(shp->irq,ha);
5117 
5118 #ifdef CONFIG_ISA
5119         if (shp->dma_channel != 0xff)
5120                 free_dma(shp->dma_channel);
5121 #endif
5122 #ifdef INT_COAL
5123         if (ha->coal_stat)
5124                 pci_free_consistent(ha->pdev, sizeof(gdth_coal_status) *
5125                         MAXOFFSETS, ha->coal_stat, ha->coal_stat_phys);
5126 #endif
5127         if (ha->pscratch)
5128                 pci_free_consistent(ha->pdev, GDTH_SCRATCH,
5129                         ha->pscratch, ha->scratch_phys);
5130         if (ha->pmsg)
5131                 pci_free_consistent(ha->pdev, sizeof(gdth_msg_str),
5132                         ha->pmsg, ha->msg_phys);
5133         if (ha->ccb_phys)
5134                 pci_unmap_single(ha->pdev,ha->ccb_phys,
5135                         sizeof(gdth_cmd_str),PCI_DMA_BIDIRECTIONAL);
5136 
5137         scsi_host_put(shp);
5138 }
5139 
5140 static int gdth_halt(struct notifier_block *nb, unsigned long event, void *buf)
5141 {
5142         gdth_ha_str *ha;
5143 
5144         TRACE2(("gdth_halt() event %d\n", (int)event));
5145         if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF)
5146                 return NOTIFY_DONE;
5147 
5148         list_for_each_entry(ha, &gdth_instances, list)
5149                 gdth_flush(ha);
5150 
5151         return NOTIFY_OK;
5152 }
5153 
5154 static struct notifier_block gdth_notifier = {
5155     gdth_halt, NULL, 0
5156 };
5157 
5158 static int __init gdth_init(void)
5159 {
5160         if (disable) {
5161                 printk("GDT-HA: Controller driver disabled from"
5162                        " command line !\n");
5163                 return 0;
5164         }
5165 
5166         printk("GDT-HA: Storage RAID Controller Driver. Version: %s\n",
5167                GDTH_VERSION_STR);
5168 
5169         /* initializations */
5170         gdth_polling = TRUE;
5171         gdth_clear_events();
5172         init_timer(&gdth_timer);
5173 
5174         /* As default we do not probe for EISA or ISA controllers */
5175         if (probe_eisa_isa) {
5176                 /* scanning for controllers, at first: ISA controller */
5177 #ifdef CONFIG_ISA
5178                 u32 isa_bios;
5179                 for (isa_bios = 0xc8000UL; isa_bios <= 0xd8000UL;
5180                                 isa_bios += 0x8000UL)
5181                         gdth_isa_probe_one(isa_bios);
5182 #endif
5183 #ifdef CONFIG_EISA
5184                 {
5185                         u16 eisa_slot;
5186                         for (eisa_slot = 0x1000; eisa_slot <= 0x8000;
5187                                                  eisa_slot += 0x1000)
5188                                 gdth_eisa_probe_one(eisa_slot);
5189                 }
5190 #endif
5191         }
5192 
5193 #ifdef CONFIG_PCI
5194         /* scanning for PCI controllers */
5195         if (pci_register_driver(&gdth_pci_driver)) {
5196                 gdth_ha_str *ha;
5197 
5198                 list_for_each_entry(ha, &gdth_instances, list)
5199                         gdth_remove_one(ha);
5200                 return -ENODEV;
5201         }
5202 #endif /* CONFIG_PCI */
5203 
5204         TRACE2(("gdth_detect() %d controller detected\n", gdth_ctr_count));
5205 
5206         major = register_chrdev(0,"gdth", &gdth_fops);
5207         register_reboot_notifier(&gdth_notifier);
5208         gdth_polling = FALSE;
5209         return 0;
5210 }
5211 
5212 static void __exit gdth_exit(void)
5213 {
5214         gdth_ha_str *ha;
5215 
5216         unregister_chrdev(major, "gdth");
5217         unregister_reboot_notifier(&gdth_notifier);
5218 
5219 #ifdef GDTH_STATISTICS
5220         del_timer_sync(&gdth_timer);
5221 #endif
5222 
5223 #ifdef CONFIG_PCI
5224         pci_unregister_driver(&gdth_pci_driver);
5225 #endif
5226 
5227         list_for_each_entry(ha, &gdth_instances, list)
5228                 gdth_remove_one(ha);
5229 }
5230 
5231 module_init(gdth_init);
5232 module_exit(gdth_exit);
5233 
5234 #ifndef MODULE
5235 __setup("gdth=", option_setup);
5236 #endif
5237 

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