[PATCH] remove many unneeded #includes of sched.h
[linux-2.6.git] / drivers / scsi / stex.c
1 /*
2  * SuperTrak EX Series Storage Controller driver for Linux
3  *
4  *      Copyright (C) 2005, 2006 Promise Technology Inc.
5  *
6  *      This program is free software; you can redistribute it and/or
7  *      modify it under the terms of the GNU General Public License
8  *      as published by the Free Software Foundation; either version
9  *      2 of the License, or (at your option) any later version.
10  *
11  *      Written By:
12  *              Ed Lin <promise_linux@promise.com>
13  *
14  */
15
16 #include <linux/init.h>
17 #include <linux/errno.h>
18 #include <linux/kernel.h>
19 #include <linux/delay.h>
20 #include <linux/time.h>
21 #include <linux/pci.h>
22 #include <linux/blkdev.h>
23 #include <linux/interrupt.h>
24 #include <linux/types.h>
25 #include <linux/module.h>
26 #include <linux/spinlock.h>
27 #include <asm/io.h>
28 #include <asm/irq.h>
29 #include <asm/byteorder.h>
30 #include <scsi/scsi.h>
31 #include <scsi/scsi_device.h>
32 #include <scsi/scsi_cmnd.h>
33 #include <scsi/scsi_host.h>
34 #include <scsi/scsi_tcq.h>
35
36 #define DRV_NAME "stex"
37 #define ST_DRIVER_VERSION "3.1.0.1"
38 #define ST_VER_MAJOR            3
39 #define ST_VER_MINOR            1
40 #define ST_OEM                  0
41 #define ST_BUILD_VER            1
42
43 enum {
44         /* MU register offset */
45         IMR0    = 0x10, /* MU_INBOUND_MESSAGE_REG0 */
46         IMR1    = 0x14, /* MU_INBOUND_MESSAGE_REG1 */
47         OMR0    = 0x18, /* MU_OUTBOUND_MESSAGE_REG0 */
48         OMR1    = 0x1c, /* MU_OUTBOUND_MESSAGE_REG1 */
49         IDBL    = 0x20, /* MU_INBOUND_DOORBELL */
50         IIS     = 0x24, /* MU_INBOUND_INTERRUPT_STATUS */
51         IIM     = 0x28, /* MU_INBOUND_INTERRUPT_MASK */
52         ODBL    = 0x2c, /* MU_OUTBOUND_DOORBELL */
53         OIS     = 0x30, /* MU_OUTBOUND_INTERRUPT_STATUS */
54         OIM     = 0x3c, /* MU_OUTBOUND_INTERRUPT_MASK */
55
56         /* MU register value */
57         MU_INBOUND_DOORBELL_HANDSHAKE           = 1,
58         MU_INBOUND_DOORBELL_REQHEADCHANGED      = 2,
59         MU_INBOUND_DOORBELL_STATUSTAILCHANGED   = 4,
60         MU_INBOUND_DOORBELL_HMUSTOPPED          = 8,
61         MU_INBOUND_DOORBELL_RESET               = 16,
62
63         MU_OUTBOUND_DOORBELL_HANDSHAKE          = 1,
64         MU_OUTBOUND_DOORBELL_REQUESTTAILCHANGED = 2,
65         MU_OUTBOUND_DOORBELL_STATUSHEADCHANGED  = 4,
66         MU_OUTBOUND_DOORBELL_BUSCHANGE          = 8,
67         MU_OUTBOUND_DOORBELL_HASEVENT           = 16,
68
69         /* MU status code */
70         MU_STATE_STARTING                       = 1,
71         MU_STATE_FMU_READY_FOR_HANDSHAKE        = 2,
72         MU_STATE_SEND_HANDSHAKE_FRAME           = 3,
73         MU_STATE_STARTED                        = 4,
74         MU_STATE_RESETTING                      = 5,
75
76         MU_MAX_DELAY                            = 120,
77         MU_HANDSHAKE_SIGNATURE                  = 0x55aaaa55,
78         MU_HANDSHAKE_SIGNATURE_HALF             = 0x5a5a0000,
79         MU_HARD_RESET_WAIT                      = 30000,
80         HMU_PARTNER_TYPE                        = 2,
81
82         /* firmware returned values */
83         SRB_STATUS_SUCCESS                      = 0x01,
84         SRB_STATUS_ERROR                        = 0x04,
85         SRB_STATUS_BUSY                         = 0x05,
86         SRB_STATUS_INVALID_REQUEST              = 0x06,
87         SRB_STATUS_SELECTION_TIMEOUT            = 0x0A,
88         SRB_SEE_SENSE                           = 0x80,
89
90         /* task attribute */
91         TASK_ATTRIBUTE_SIMPLE                   = 0x0,
92         TASK_ATTRIBUTE_HEADOFQUEUE              = 0x1,
93         TASK_ATTRIBUTE_ORDERED                  = 0x2,
94         TASK_ATTRIBUTE_ACA                      = 0x4,
95
96         /* request count, etc. */
97         MU_MAX_REQUEST                          = 32,
98
99         /* one message wasted, use MU_MAX_REQUEST+1
100                 to handle MU_MAX_REQUEST messages */
101         MU_REQ_COUNT                            = (MU_MAX_REQUEST + 1),
102         MU_STATUS_COUNT                         = (MU_MAX_REQUEST + 1),
103
104         STEX_CDB_LENGTH                         = MAX_COMMAND_SIZE,
105         REQ_VARIABLE_LEN                        = 1024,
106         STATUS_VAR_LEN                          = 128,
107         ST_CAN_QUEUE                            = MU_MAX_REQUEST,
108         ST_CMD_PER_LUN                          = MU_MAX_REQUEST,
109         ST_MAX_SG                               = 32,
110
111         /* sg flags */
112         SG_CF_EOT                               = 0x80, /* end of table */
113         SG_CF_64B                               = 0x40, /* 64 bit item */
114         SG_CF_HOST                              = 0x20, /* sg in host memory */
115
116         ST_MAX_ARRAY_SUPPORTED                  = 16,
117         ST_MAX_TARGET_NUM                       = (ST_MAX_ARRAY_SUPPORTED+1),
118         ST_MAX_LUN_PER_TARGET                   = 16,
119
120         st_shasta                               = 0,
121         st_vsc                                  = 1,
122         st_vsc1                                 = 2,
123         st_yosemite                             = 3,
124
125         PASSTHRU_REQ_TYPE                       = 0x00000001,
126         PASSTHRU_REQ_NO_WAKEUP                  = 0x00000100,
127         ST_INTERNAL_TIMEOUT                     = 30,
128
129         ST_TO_CMD                               = 0,
130         ST_FROM_CMD                             = 1,
131
132         /* vendor specific commands of Promise */
133         MGT_CMD                                 = 0xd8,
134         SINBAND_MGT_CMD                         = 0xd9,
135         ARRAY_CMD                               = 0xe0,
136         CONTROLLER_CMD                          = 0xe1,
137         DEBUGGING_CMD                           = 0xe2,
138         PASSTHRU_CMD                            = 0xe3,
139
140         PASSTHRU_GET_ADAPTER                    = 0x05,
141         PASSTHRU_GET_DRVVER                     = 0x10,
142
143         CTLR_CONFIG_CMD                         = 0x03,
144         CTLR_SHUTDOWN                           = 0x0d,
145
146         CTLR_POWER_STATE_CHANGE                 = 0x0e,
147         CTLR_POWER_SAVING                       = 0x01,
148
149         PASSTHRU_SIGNATURE                      = 0x4e415041,
150         MGT_CMD_SIGNATURE                       = 0xba,
151
152         INQUIRY_EVPD                            = 0x01,
153
154         ST_ADDITIONAL_MEM                       = 0x200000,
155 };
156
157 /* SCSI inquiry data */
158 typedef struct st_inq {
159         u8 DeviceType                   :5;
160         u8 DeviceTypeQualifier          :3;
161         u8 DeviceTypeModifier           :7;
162         u8 RemovableMedia               :1;
163         u8 Versions;
164         u8 ResponseDataFormat           :4;
165         u8 HiSupport                    :1;
166         u8 NormACA                      :1;
167         u8 ReservedBit                  :1;
168         u8 AERC                         :1;
169         u8 AdditionalLength;
170         u8 Reserved[2];
171         u8 SoftReset                    :1;
172         u8 CommandQueue                 :1;
173         u8 Reserved2                    :1;
174         u8 LinkedCommands               :1;
175         u8 Synchronous                  :1;
176         u8 Wide16Bit                    :1;
177         u8 Wide32Bit                    :1;
178         u8 RelativeAddressing           :1;
179         u8 VendorId[8];
180         u8 ProductId[16];
181         u8 ProductRevisionLevel[4];
182         u8 VendorSpecific[20];
183         u8 Reserved3[40];
184 } ST_INQ;
185
186 struct st_sgitem {
187         u8 ctrl;        /* SG_CF_xxx */
188         u8 reserved[3];
189         __le32 count;
190         __le32 addr;
191         __le32 addr_hi;
192 };
193
194 struct st_sgtable {
195         __le16 sg_count;
196         __le16 max_sg_count;
197         __le32 sz_in_byte;
198         struct st_sgitem table[ST_MAX_SG];
199 };
200
201 struct handshake_frame {
202         __le32 rb_phy;          /* request payload queue physical address */
203         __le32 rb_phy_hi;
204         __le16 req_sz;          /* size of each request payload */
205         __le16 req_cnt;         /* count of reqs the buffer can hold */
206         __le16 status_sz;       /* size of each status payload */
207         __le16 status_cnt;      /* count of status the buffer can hold */
208         __le32 hosttime;        /* seconds from Jan 1, 1970 (GMT) */
209         __le32 hosttime_hi;
210         u8 partner_type;        /* who sends this frame */
211         u8 reserved0[7];
212         __le32 partner_ver_major;
213         __le32 partner_ver_minor;
214         __le32 partner_ver_oem;
215         __le32 partner_ver_build;
216         __le32 extra_offset;    /* NEW */
217         __le32 extra_size;      /* NEW */
218         u32 reserved1[2];
219 };
220
221 struct req_msg {
222         __le16 tag;
223         u8 lun;
224         u8 target;
225         u8 task_attr;
226         u8 task_manage;
227         u8 prd_entry;
228         u8 payload_sz;          /* payload size in 4-byte, not used */
229         u8 cdb[STEX_CDB_LENGTH];
230         u8 variable[REQ_VARIABLE_LEN];
231 };
232
233 struct status_msg {
234         __le16 tag;
235         u8 lun;
236         u8 target;
237         u8 srb_status;
238         u8 scsi_status;
239         u8 reserved;
240         u8 payload_sz;          /* payload size in 4-byte */
241         u8 variable[STATUS_VAR_LEN];
242 };
243
244 struct ver_info {
245         u32 major;
246         u32 minor;
247         u32 oem;
248         u32 build;
249         u32 reserved[2];
250 };
251
252 struct st_frame {
253         u32 base[6];
254         u32 rom_addr;
255
256         struct ver_info drv_ver;
257         struct ver_info bios_ver;
258
259         u32 bus;
260         u32 slot;
261         u32 irq_level;
262         u32 irq_vec;
263         u32 id;
264         u32 subid;
265
266         u32 dimm_size;
267         u8 dimm_type;
268         u8 reserved[3];
269
270         u32 channel;
271         u32 reserved1;
272 };
273
274 struct st_drvver {
275         u32 major;
276         u32 minor;
277         u32 oem;
278         u32 build;
279         u32 signature[2];
280         u8 console_id;
281         u8 host_no;
282         u8 reserved0[2];
283         u32 reserved[3];
284 };
285
286 #define MU_REQ_BUFFER_SIZE      (MU_REQ_COUNT * sizeof(struct req_msg))
287 #define MU_STATUS_BUFFER_SIZE   (MU_STATUS_COUNT * sizeof(struct status_msg))
288 #define MU_BUFFER_SIZE          (MU_REQ_BUFFER_SIZE + MU_STATUS_BUFFER_SIZE)
289 #define STEX_EXTRA_SIZE         max(sizeof(struct st_frame), sizeof(ST_INQ))
290 #define STEX_BUFFER_SIZE        (MU_BUFFER_SIZE + STEX_EXTRA_SIZE)
291
292 struct st_ccb {
293         struct req_msg *req;
294         struct scsi_cmnd *cmd;
295
296         void *sense_buffer;
297         unsigned int sense_bufflen;
298         int sg_count;
299
300         u32 req_type;
301         u8 srb_status;
302         u8 scsi_status;
303 };
304
305 struct st_hba {
306         void __iomem *mmio_base;        /* iomapped PCI memory space */
307         void *dma_mem;
308         dma_addr_t dma_handle;
309         size_t dma_size;
310
311         struct Scsi_Host *host;
312         struct pci_dev *pdev;
313
314         u32 req_head;
315         u32 req_tail;
316         u32 status_head;
317         u32 status_tail;
318
319         struct status_msg *status_buffer;
320         void *copy_buffer; /* temp buffer for driver-handled commands */
321         struct st_ccb ccb[MU_MAX_REQUEST];
322         struct st_ccb *wait_ccb;
323         wait_queue_head_t waitq;
324
325         unsigned int mu_status;
326         int out_req_cnt;
327
328         unsigned int cardtype;
329 };
330
331 static const char console_inq_page[] =
332 {
333         0x03,0x00,0x03,0x03,0xFA,0x00,0x00,0x30,
334         0x50,0x72,0x6F,0x6D,0x69,0x73,0x65,0x20,        /* "Promise " */
335         0x52,0x41,0x49,0x44,0x20,0x43,0x6F,0x6E,        /* "RAID Con" */
336         0x73,0x6F,0x6C,0x65,0x20,0x20,0x20,0x20,        /* "sole    " */
337         0x31,0x2E,0x30,0x30,0x20,0x20,0x20,0x20,        /* "1.00    " */
338         0x53,0x58,0x2F,0x52,0x53,0x41,0x46,0x2D,        /* "SX/RSAF-" */
339         0x54,0x45,0x31,0x2E,0x30,0x30,0x20,0x20,        /* "TE1.00  " */
340         0x0C,0x20,0x20,0x20,0x20,0x20,0x20,0x20
341 };
342
343 MODULE_AUTHOR("Ed Lin");
344 MODULE_DESCRIPTION("Promise Technology SuperTrak EX Controllers");
345 MODULE_LICENSE("GPL");
346 MODULE_VERSION(ST_DRIVER_VERSION);
347
348 static void stex_gettime(__le32 *time)
349 {
350         struct timeval tv;
351         do_gettimeofday(&tv);
352
353         *time = cpu_to_le32(tv.tv_sec & 0xffffffff);
354         *(time + 1) = cpu_to_le32((tv.tv_sec >> 16) >> 16);
355 }
356
357 static struct status_msg *stex_get_status(struct st_hba *hba)
358 {
359         struct status_msg *status =
360                 hba->status_buffer + hba->status_tail;
361
362         ++hba->status_tail;
363         hba->status_tail %= MU_STATUS_COUNT;
364
365         return status;
366 }
367
368 static void stex_set_sense(struct scsi_cmnd *cmd, u8 sk, u8 asc, u8 ascq)
369 {
370         cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
371
372         cmd->sense_buffer[0] = 0x70;    /* fixed format, current */
373         cmd->sense_buffer[2] = sk;
374         cmd->sense_buffer[7] = 18 - 8;  /* additional sense length */
375         cmd->sense_buffer[12] = asc;
376         cmd->sense_buffer[13] = ascq;
377 }
378
379 static void stex_invalid_field(struct scsi_cmnd *cmd,
380                                void (*done)(struct scsi_cmnd *))
381 {
382         /* "Invalid field in cbd" */
383         stex_set_sense(cmd, ILLEGAL_REQUEST, 0x24, 0x0);
384         done(cmd);
385 }
386
387 static struct req_msg *stex_alloc_req(struct st_hba *hba)
388 {
389         struct req_msg *req = ((struct req_msg *)hba->dma_mem) +
390                 hba->req_head;
391
392         ++hba->req_head;
393         hba->req_head %= MU_REQ_COUNT;
394
395         return req;
396 }
397
398 static int stex_map_sg(struct st_hba *hba,
399         struct req_msg *req, struct st_ccb *ccb)
400 {
401         struct pci_dev *pdev = hba->pdev;
402         struct scsi_cmnd *cmd;
403         dma_addr_t dma_handle;
404         struct scatterlist *src;
405         struct st_sgtable *dst;
406         int i;
407
408         cmd = ccb->cmd;
409         dst = (struct st_sgtable *)req->variable;
410         dst->max_sg_count = cpu_to_le16(ST_MAX_SG);
411         dst->sz_in_byte = cpu_to_le32(cmd->request_bufflen);
412
413         if (cmd->use_sg) {
414                 int n_elem;
415
416                 src = (struct scatterlist *) cmd->request_buffer;
417                 n_elem = pci_map_sg(pdev, src,
418                         cmd->use_sg, cmd->sc_data_direction);
419                 if (n_elem <= 0)
420                         return -EIO;
421
422                 ccb->sg_count = n_elem;
423                 dst->sg_count = cpu_to_le16((u16)n_elem);
424
425                 for (i = 0; i < n_elem; i++, src++) {
426                         dst->table[i].count = cpu_to_le32((u32)sg_dma_len(src));
427                         dst->table[i].addr =
428                                 cpu_to_le32(sg_dma_address(src) & 0xffffffff);
429                         dst->table[i].addr_hi =
430                                 cpu_to_le32((sg_dma_address(src) >> 16) >> 16);
431                         dst->table[i].ctrl = SG_CF_64B | SG_CF_HOST;
432                 }
433                 dst->table[--i].ctrl |= SG_CF_EOT;
434                 return 0;
435         }
436
437         dma_handle = pci_map_single(pdev, cmd->request_buffer,
438                 cmd->request_bufflen, cmd->sc_data_direction);
439         cmd->SCp.dma_handle = dma_handle;
440
441         ccb->sg_count = 1;
442         dst->sg_count = cpu_to_le16(1);
443         dst->table[0].addr = cpu_to_le32(dma_handle & 0xffffffff);
444         dst->table[0].addr_hi = cpu_to_le32((dma_handle >> 16) >> 16);
445         dst->table[0].count = cpu_to_le32((u32)cmd->request_bufflen);
446         dst->table[0].ctrl = SG_CF_EOT | SG_CF_64B | SG_CF_HOST;
447
448         return 0;
449 }
450
451 static void stex_internal_copy(struct scsi_cmnd *cmd,
452         const void *src, size_t *count, int sg_count, int direction)
453 {
454         size_t lcount;
455         size_t len;
456         void *s, *d, *base = NULL;
457         if (*count > cmd->request_bufflen)
458                 *count = cmd->request_bufflen;
459         lcount = *count;
460         while (lcount) {
461                 len = lcount;
462                 s = (void *)src;
463                 if (cmd->use_sg) {
464                         size_t offset = *count - lcount;
465                         s += offset;
466                         base = scsi_kmap_atomic_sg(cmd->request_buffer,
467                                 sg_count, &offset, &len);
468                         if (base == NULL) {
469                                 *count -= lcount;
470                                 return;
471                         }
472                         d = base + offset;
473                 } else
474                         d = cmd->request_buffer;
475
476                 if (direction == ST_TO_CMD)
477                         memcpy(d, s, len);
478                 else
479                         memcpy(s, d, len);
480
481                 lcount -= len;
482                 if (cmd->use_sg)
483                         scsi_kunmap_atomic_sg(base);
484         }
485 }
486
487 static int stex_direct_copy(struct scsi_cmnd *cmd,
488         const void *src, size_t count)
489 {
490         struct st_hba *hba = (struct st_hba *) &cmd->device->host->hostdata[0];
491         size_t cp_len = count;
492         int n_elem = 0;
493
494         if (cmd->use_sg) {
495                 n_elem = pci_map_sg(hba->pdev, cmd->request_buffer,
496                         cmd->use_sg, cmd->sc_data_direction);
497                 if (n_elem <= 0)
498                         return 0;
499         }
500
501         stex_internal_copy(cmd, src, &cp_len, n_elem, ST_TO_CMD);
502
503         if (cmd->use_sg)
504                 pci_unmap_sg(hba->pdev, cmd->request_buffer,
505                         cmd->use_sg, cmd->sc_data_direction);
506         return cp_len == count;
507 }
508
509 static void stex_controller_info(struct st_hba *hba, struct st_ccb *ccb)
510 {
511         struct st_frame *p;
512         size_t count = sizeof(struct st_frame);
513
514         p = hba->copy_buffer;
515         stex_internal_copy(ccb->cmd, p, &count, ccb->sg_count, ST_FROM_CMD);
516         memset(p->base, 0, sizeof(u32)*6);
517         *(unsigned long *)(p->base) = pci_resource_start(hba->pdev, 0);
518         p->rom_addr = 0;
519
520         p->drv_ver.major = ST_VER_MAJOR;
521         p->drv_ver.minor = ST_VER_MINOR;
522         p->drv_ver.oem = ST_OEM;
523         p->drv_ver.build = ST_BUILD_VER;
524
525         p->bus = hba->pdev->bus->number;
526         p->slot = hba->pdev->devfn;
527         p->irq_level = 0;
528         p->irq_vec = hba->pdev->irq;
529         p->id = hba->pdev->vendor << 16 | hba->pdev->device;
530         p->subid =
531                 hba->pdev->subsystem_vendor << 16 | hba->pdev->subsystem_device;
532
533         stex_internal_copy(ccb->cmd, p, &count, ccb->sg_count, ST_TO_CMD);
534 }
535
536 static void
537 stex_send_cmd(struct st_hba *hba, struct req_msg *req, u16 tag)
538 {
539         req->tag = cpu_to_le16(tag);
540         req->task_attr = TASK_ATTRIBUTE_SIMPLE;
541         req->task_manage = 0; /* not supported yet */
542
543         hba->ccb[tag].req = req;
544         hba->out_req_cnt++;
545
546         writel(hba->req_head, hba->mmio_base + IMR0);
547         writel(MU_INBOUND_DOORBELL_REQHEADCHANGED, hba->mmio_base + IDBL);
548         readl(hba->mmio_base + IDBL); /* flush */
549 }
550
551 static int
552 stex_slave_alloc(struct scsi_device *sdev)
553 {
554         /* Cheat: usually extracted from Inquiry data */
555         sdev->tagged_supported = 1;
556
557         scsi_activate_tcq(sdev, sdev->host->can_queue);
558
559         return 0;
560 }
561
562 static int
563 stex_slave_config(struct scsi_device *sdev)
564 {
565         sdev->use_10_for_rw = 1;
566         sdev->use_10_for_ms = 1;
567         sdev->timeout = 60 * HZ;
568         sdev->tagged_supported = 1;
569
570         return 0;
571 }
572
573 static void
574 stex_slave_destroy(struct scsi_device *sdev)
575 {
576         scsi_deactivate_tcq(sdev, 1);
577 }
578
579 static int
580 stex_queuecommand(struct scsi_cmnd *cmd, void (* done)(struct scsi_cmnd *))
581 {
582         struct st_hba *hba;
583         struct Scsi_Host *host;
584         unsigned int id,lun;
585         struct req_msg *req;
586         u16 tag;
587         host = cmd->device->host;
588         id = cmd->device->id;
589         lun = cmd->device->channel; /* firmware lun issue work around */
590         hba = (struct st_hba *) &host->hostdata[0];
591
592         switch (cmd->cmnd[0]) {
593         case MODE_SENSE_10:
594         {
595                 static char ms10_caching_page[12] =
596                         { 0, 0x12, 0, 0, 0, 0, 0, 0, 0x8, 0xa, 0x4, 0 };
597                 unsigned char page;
598                 page = cmd->cmnd[2] & 0x3f;
599                 if (page == 0x8 || page == 0x3f) {
600                         stex_direct_copy(cmd, ms10_caching_page,
601                                         sizeof(ms10_caching_page));
602                         cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
603                         done(cmd);
604                 } else
605                         stex_invalid_field(cmd, done);
606                 return 0;
607         }
608         case INQUIRY:
609                 if (id != ST_MAX_ARRAY_SUPPORTED)
610                         break;
611                 if (lun == 0 && (cmd->cmnd[1] & INQUIRY_EVPD) == 0) {
612                         stex_direct_copy(cmd, console_inq_page,
613                                 sizeof(console_inq_page));
614                         cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
615                         done(cmd);
616                 } else
617                         stex_invalid_field(cmd, done);
618                 return 0;
619         case PASSTHRU_CMD:
620                 if (cmd->cmnd[1] == PASSTHRU_GET_DRVVER) {
621                         struct st_drvver ver;
622                         ver.major = ST_VER_MAJOR;
623                         ver.minor = ST_VER_MINOR;
624                         ver.oem = ST_OEM;
625                         ver.build = ST_BUILD_VER;
626                         ver.signature[0] = PASSTHRU_SIGNATURE;
627                         ver.console_id = ST_MAX_ARRAY_SUPPORTED;
628                         ver.host_no = hba->host->host_no;
629                         cmd->result = stex_direct_copy(cmd, &ver, sizeof(ver)) ?
630                                 DID_OK << 16 | COMMAND_COMPLETE << 8 :
631                                 DID_ERROR << 16 | COMMAND_COMPLETE << 8;
632                         done(cmd);
633                         return 0;
634                 }
635         default:
636                 break;
637         }
638
639         cmd->scsi_done = done;
640
641         tag = cmd->request->tag;
642
643         if (unlikely(tag >= host->can_queue))
644                 return SCSI_MLQUEUE_HOST_BUSY;
645
646         req = stex_alloc_req(hba);
647
648         if (hba->cardtype == st_yosemite) {
649                 req->lun = lun * (ST_MAX_TARGET_NUM - 1) + id;
650                 req->target = 0;
651         } else {
652                 req->lun = lun;
653                 req->target = id;
654         }
655
656         /* cdb */
657         memcpy(req->cdb, cmd->cmnd, STEX_CDB_LENGTH);
658
659         hba->ccb[tag].cmd = cmd;
660         hba->ccb[tag].sense_bufflen = SCSI_SENSE_BUFFERSIZE;
661         hba->ccb[tag].sense_buffer = cmd->sense_buffer;
662         hba->ccb[tag].req_type = 0;
663
664         if (cmd->sc_data_direction != DMA_NONE)
665                 stex_map_sg(hba, req, &hba->ccb[tag]);
666
667         stex_send_cmd(hba, req, tag);
668         return 0;
669 }
670
671 static void stex_unmap_sg(struct st_hba *hba, struct scsi_cmnd *cmd)
672 {
673         if (cmd->sc_data_direction != DMA_NONE) {
674                 if (cmd->use_sg)
675                         pci_unmap_sg(hba->pdev, cmd->request_buffer,
676                                 cmd->use_sg, cmd->sc_data_direction);
677                 else
678                         pci_unmap_single(hba->pdev, cmd->SCp.dma_handle,
679                                 cmd->request_bufflen, cmd->sc_data_direction);
680         }
681 }
682
683 static void stex_scsi_done(struct st_ccb *ccb)
684 {
685         struct scsi_cmnd *cmd = ccb->cmd;
686         int result;
687
688         if (ccb->srb_status == SRB_STATUS_SUCCESS ||  ccb->srb_status == 0) {
689                 result = ccb->scsi_status;
690                 switch (ccb->scsi_status) {
691                 case SAM_STAT_GOOD:
692                         result |= DID_OK << 16 | COMMAND_COMPLETE << 8;
693                         break;
694                 case SAM_STAT_CHECK_CONDITION:
695                         result |= DRIVER_SENSE << 24;
696                         break;
697                 case SAM_STAT_BUSY:
698                         result |= DID_BUS_BUSY << 16 | COMMAND_COMPLETE << 8;
699                         break;
700                 default:
701                         result |= DID_ERROR << 16 | COMMAND_COMPLETE << 8;
702                         break;
703                 }
704         }
705         else if (ccb->srb_status & SRB_SEE_SENSE)
706                 result = DRIVER_SENSE << 24 | SAM_STAT_CHECK_CONDITION;
707         else switch (ccb->srb_status) {
708                 case SRB_STATUS_SELECTION_TIMEOUT:
709                         result = DID_NO_CONNECT << 16 | COMMAND_COMPLETE << 8;
710                         break;
711                 case SRB_STATUS_BUSY:
712                         result = DID_BUS_BUSY << 16 | COMMAND_COMPLETE << 8;
713                         break;
714                 case SRB_STATUS_INVALID_REQUEST:
715                 case SRB_STATUS_ERROR:
716                 default:
717                         result = DID_ERROR << 16 | COMMAND_COMPLETE << 8;
718                         break;
719         }
720
721         cmd->result = result;
722         cmd->scsi_done(cmd);
723 }
724
725 static void stex_copy_data(struct st_ccb *ccb,
726         struct status_msg *resp, unsigned int variable)
727 {
728         size_t count = variable;
729         if (resp->scsi_status != SAM_STAT_GOOD) {
730                 if (ccb->sense_buffer != NULL)
731                         memcpy(ccb->sense_buffer, resp->variable,
732                                 min(variable, ccb->sense_bufflen));
733                 return;
734         }
735
736         if (ccb->cmd == NULL)
737                 return;
738         stex_internal_copy(ccb->cmd,
739                 resp->variable, &count, ccb->sg_count, ST_TO_CMD);
740 }
741
742 static void stex_ys_commands(struct st_hba *hba,
743         struct st_ccb *ccb, struct status_msg *resp)
744 {
745         size_t count;
746
747         if (ccb->cmd->cmnd[0] == MGT_CMD &&
748                 resp->scsi_status != SAM_STAT_CHECK_CONDITION) {
749                 ccb->cmd->request_bufflen =
750                         le32_to_cpu(*(__le32 *)&resp->variable[0]);
751                 return;
752         }
753
754         if (resp->srb_status != 0)
755                 return;
756
757         /* determine inquiry command status by DeviceTypeQualifier */
758         if (ccb->cmd->cmnd[0] == INQUIRY &&
759                 resp->scsi_status == SAM_STAT_GOOD) {
760                 ST_INQ *inq_data;
761
762                 count = STEX_EXTRA_SIZE;
763                 stex_internal_copy(ccb->cmd, hba->copy_buffer,
764                         &count, ccb->sg_count, ST_FROM_CMD);
765                 inq_data = (ST_INQ *)hba->copy_buffer;
766                 if (inq_data->DeviceTypeQualifier != 0)
767                         ccb->srb_status = SRB_STATUS_SELECTION_TIMEOUT;
768                 else
769                         ccb->srb_status = SRB_STATUS_SUCCESS;
770         } else if (ccb->cmd->cmnd[0] == REPORT_LUNS) {
771                 u8 *report_lun_data = (u8 *)hba->copy_buffer;
772
773                 count = STEX_EXTRA_SIZE;
774                 stex_internal_copy(ccb->cmd, report_lun_data,
775                         &count, ccb->sg_count, ST_FROM_CMD);
776                 if (report_lun_data[2] || report_lun_data[3]) {
777                         report_lun_data[2] = 0x00;
778                         report_lun_data[3] = 0x08;
779                         stex_internal_copy(ccb->cmd, report_lun_data,
780                                 &count, ccb->sg_count, ST_TO_CMD);
781                 }
782         }
783 }
784
785 static void stex_mu_intr(struct st_hba *hba, u32 doorbell)
786 {
787         void __iomem *base = hba->mmio_base;
788         struct status_msg *resp;
789         struct st_ccb *ccb;
790         unsigned int size;
791         u16 tag;
792
793         if (!(doorbell & MU_OUTBOUND_DOORBELL_STATUSHEADCHANGED))
794                 return;
795
796         /* status payloads */
797         hba->status_head = readl(base + OMR1);
798         if (unlikely(hba->status_head >= MU_STATUS_COUNT)) {
799                 printk(KERN_WARNING DRV_NAME "(%s): invalid status head\n",
800                         pci_name(hba->pdev));
801                 return;
802         }
803
804         /*
805          * it's not a valid status payload if:
806          * 1. there are no pending requests(e.g. during init stage)
807          * 2. there are some pending requests, but the controller is in
808          *     reset status, and its type is not st_yosemite
809          * firmware of st_yosemite in reset status will return pending requests
810          * to driver, so we allow it to pass
811          */
812         if (unlikely(hba->out_req_cnt <= 0 ||
813                         (hba->mu_status == MU_STATE_RESETTING &&
814                          hba->cardtype != st_yosemite))) {
815                 hba->status_tail = hba->status_head;
816                 goto update_status;
817         }
818
819         while (hba->status_tail != hba->status_head) {
820                 resp = stex_get_status(hba);
821                 tag = le16_to_cpu(resp->tag);
822                 if (unlikely(tag >= hba->host->can_queue)) {
823                         printk(KERN_WARNING DRV_NAME
824                                 "(%s): invalid tag\n", pci_name(hba->pdev));
825                         continue;
826                 }
827
828                 ccb = &hba->ccb[tag];
829                 if (hba->wait_ccb == ccb)
830                         hba->wait_ccb = NULL;
831                 if (unlikely(ccb->req == NULL)) {
832                         printk(KERN_WARNING DRV_NAME
833                                 "(%s): lagging req\n", pci_name(hba->pdev));
834                         hba->out_req_cnt--;
835                         continue;
836                 }
837
838                 size = resp->payload_sz * sizeof(u32); /* payload size */
839                 if (unlikely(size < sizeof(*resp) - STATUS_VAR_LEN ||
840                         size > sizeof(*resp))) {
841                         printk(KERN_WARNING DRV_NAME "(%s): bad status size\n",
842                                 pci_name(hba->pdev));
843                 } else {
844                         size -= sizeof(*resp) - STATUS_VAR_LEN; /* copy size */
845                         if (size)
846                                 stex_copy_data(ccb, resp, size);
847                 }
848
849                 ccb->srb_status = resp->srb_status;
850                 ccb->scsi_status = resp->scsi_status;
851
852                 if (likely(ccb->cmd != NULL)) {
853                         if (hba->cardtype == st_yosemite)
854                                 stex_ys_commands(hba, ccb, resp);
855
856                         if (unlikely(ccb->cmd->cmnd[0] == PASSTHRU_CMD &&
857                                 ccb->cmd->cmnd[1] == PASSTHRU_GET_ADAPTER))
858                                 stex_controller_info(hba, ccb);
859
860                         stex_unmap_sg(hba, ccb->cmd);
861                         stex_scsi_done(ccb);
862                         hba->out_req_cnt--;
863                 } else if (ccb->req_type & PASSTHRU_REQ_TYPE) {
864                         hba->out_req_cnt--;
865                         if (ccb->req_type & PASSTHRU_REQ_NO_WAKEUP) {
866                                 ccb->req_type = 0;
867                                 continue;
868                         }
869                         ccb->req_type = 0;
870                         if (waitqueue_active(&hba->waitq))
871                                 wake_up(&hba->waitq);
872                 }
873         }
874
875 update_status:
876         writel(hba->status_head, base + IMR1);
877         readl(base + IMR1); /* flush */
878 }
879
880 static irqreturn_t stex_intr(int irq, void *__hba)
881 {
882         struct st_hba *hba = __hba;
883         void __iomem *base = hba->mmio_base;
884         u32 data;
885         unsigned long flags;
886         int handled = 0;
887
888         spin_lock_irqsave(hba->host->host_lock, flags);
889
890         data = readl(base + ODBL);
891
892         if (data && data != 0xffffffff) {
893                 /* clear the interrupt */
894                 writel(data, base + ODBL);
895                 readl(base + ODBL); /* flush */
896                 stex_mu_intr(hba, data);
897                 handled = 1;
898         }
899
900         spin_unlock_irqrestore(hba->host->host_lock, flags);
901
902         return IRQ_RETVAL(handled);
903 }
904
905 static int stex_handshake(struct st_hba *hba)
906 {
907         void __iomem *base = hba->mmio_base;
908         struct handshake_frame *h;
909         dma_addr_t status_phys;
910         u32 data;
911         unsigned long before;
912
913         if (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) {
914                 writel(MU_INBOUND_DOORBELL_HANDSHAKE, base + IDBL);
915                 readl(base + IDBL);
916                 before = jiffies;
917                 while (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) {
918                         if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) {
919                                 printk(KERN_ERR DRV_NAME
920                                         "(%s): no handshake signature\n",
921                                         pci_name(hba->pdev));
922                                 return -1;
923                         }
924                         rmb();
925                         msleep(1);
926                 }
927         }
928
929         udelay(10);
930
931         data = readl(base + OMR1);
932         if ((data & 0xffff0000) == MU_HANDSHAKE_SIGNATURE_HALF) {
933                 data &= 0x0000ffff;
934                 if (hba->host->can_queue > data)
935                         hba->host->can_queue = data;
936         }
937
938         h = (struct handshake_frame *)(hba->dma_mem + MU_REQ_BUFFER_SIZE);
939         h->rb_phy = cpu_to_le32(hba->dma_handle);
940         h->rb_phy_hi = cpu_to_le32((hba->dma_handle >> 16) >> 16);
941         h->req_sz = cpu_to_le16(sizeof(struct req_msg));
942         h->req_cnt = cpu_to_le16(MU_REQ_COUNT);
943         h->status_sz = cpu_to_le16(sizeof(struct status_msg));
944         h->status_cnt = cpu_to_le16(MU_STATUS_COUNT);
945         stex_gettime(&h->hosttime);
946         h->partner_type = HMU_PARTNER_TYPE;
947         if (hba->dma_size > STEX_BUFFER_SIZE) {
948                 h->extra_offset = cpu_to_le32(STEX_BUFFER_SIZE);
949                 h->extra_size = cpu_to_le32(ST_ADDITIONAL_MEM);
950         } else
951                 h->extra_offset = h->extra_size = 0;
952
953         status_phys = hba->dma_handle + MU_REQ_BUFFER_SIZE;
954         writel(status_phys, base + IMR0);
955         readl(base + IMR0);
956         writel((status_phys >> 16) >> 16, base + IMR1);
957         readl(base + IMR1);
958
959         writel((status_phys >> 16) >> 16, base + OMR0); /* old fw compatible */
960         readl(base + OMR0);
961         writel(MU_INBOUND_DOORBELL_HANDSHAKE, base + IDBL);
962         readl(base + IDBL); /* flush */
963
964         udelay(10);
965         before = jiffies;
966         while (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) {
967                 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) {
968                         printk(KERN_ERR DRV_NAME
969                                 "(%s): no signature after handshake frame\n",
970                                 pci_name(hba->pdev));
971                         return -1;
972                 }
973                 rmb();
974                 msleep(1);
975         }
976
977         writel(0, base + IMR0);
978         readl(base + IMR0);
979         writel(0, base + OMR0);
980         readl(base + OMR0);
981         writel(0, base + IMR1);
982         readl(base + IMR1);
983         writel(0, base + OMR1);
984         readl(base + OMR1); /* flush */
985         hba->mu_status = MU_STATE_STARTED;
986         return 0;
987 }
988
989 static int stex_abort(struct scsi_cmnd *cmd)
990 {
991         struct Scsi_Host *host = cmd->device->host;
992         struct st_hba *hba = (struct st_hba *)host->hostdata;
993         u16 tag = cmd->request->tag;
994         void __iomem *base;
995         u32 data;
996         int result = SUCCESS;
997         unsigned long flags;
998         base = hba->mmio_base;
999         spin_lock_irqsave(host->host_lock, flags);
1000         if (tag < host->can_queue && hba->ccb[tag].cmd == cmd)
1001                 hba->wait_ccb = &hba->ccb[tag];
1002         else {
1003                 for (tag = 0; tag < host->can_queue; tag++)
1004                         if (hba->ccb[tag].cmd == cmd) {
1005                                 hba->wait_ccb = &hba->ccb[tag];
1006                                 break;
1007                         }
1008                 if (tag >= host->can_queue)
1009                         goto out;
1010         }
1011
1012         data = readl(base + ODBL);
1013         if (data == 0 || data == 0xffffffff)
1014                 goto fail_out;
1015
1016         writel(data, base + ODBL);
1017         readl(base + ODBL); /* flush */
1018
1019         stex_mu_intr(hba, data);
1020
1021         if (hba->wait_ccb == NULL) {
1022                 printk(KERN_WARNING DRV_NAME
1023                         "(%s): lost interrupt\n", pci_name(hba->pdev));
1024                 goto out;
1025         }
1026
1027 fail_out:
1028         stex_unmap_sg(hba, cmd);
1029         hba->wait_ccb->req = NULL; /* nullify the req's future return */
1030         hba->wait_ccb = NULL;
1031         result = FAILED;
1032 out:
1033         spin_unlock_irqrestore(host->host_lock, flags);
1034         return result;
1035 }
1036
1037 static void stex_hard_reset(struct st_hba *hba)
1038 {
1039         struct pci_bus *bus;
1040         int i;
1041         u16 pci_cmd;
1042         u8 pci_bctl;
1043
1044         for (i = 0; i < 16; i++)
1045                 pci_read_config_dword(hba->pdev, i * 4,
1046                         &hba->pdev->saved_config_space[i]);
1047
1048         /* Reset secondary bus. Our controller(MU/ATU) is the only device on
1049            secondary bus. Consult Intel 80331/3 developer's manual for detail */
1050         bus = hba->pdev->bus;
1051         pci_read_config_byte(bus->self, PCI_BRIDGE_CONTROL, &pci_bctl);
1052         pci_bctl |= PCI_BRIDGE_CTL_BUS_RESET;
1053         pci_write_config_byte(bus->self, PCI_BRIDGE_CONTROL, pci_bctl);
1054         msleep(1);
1055         pci_bctl &= ~PCI_BRIDGE_CTL_BUS_RESET;
1056         pci_write_config_byte(bus->self, PCI_BRIDGE_CONTROL, pci_bctl);
1057
1058         for (i = 0; i < MU_HARD_RESET_WAIT; i++) {
1059                 pci_read_config_word(hba->pdev, PCI_COMMAND, &pci_cmd);
1060                 if (pci_cmd != 0xffff && (pci_cmd & PCI_COMMAND_MASTER))
1061                         break;
1062                 msleep(1);
1063         }
1064
1065         ssleep(5);
1066         for (i = 0; i < 16; i++)
1067                 pci_write_config_dword(hba->pdev, i * 4,
1068                         hba->pdev->saved_config_space[i]);
1069 }
1070
1071 static int stex_reset(struct scsi_cmnd *cmd)
1072 {
1073         struct st_hba *hba;
1074         unsigned long flags;
1075         unsigned long before;
1076         hba = (struct st_hba *) &cmd->device->host->hostdata[0];
1077
1078         hba->mu_status = MU_STATE_RESETTING;
1079
1080         if (hba->cardtype == st_shasta)
1081                 stex_hard_reset(hba);
1082
1083         if (hba->cardtype != st_yosemite) {
1084                 if (stex_handshake(hba)) {
1085                         printk(KERN_WARNING DRV_NAME
1086                                 "(%s): resetting: handshake failed\n",
1087                                 pci_name(hba->pdev));
1088                         return FAILED;
1089                 }
1090                 spin_lock_irqsave(hba->host->host_lock, flags);
1091                 hba->req_head = 0;
1092                 hba->req_tail = 0;
1093                 hba->status_head = 0;
1094                 hba->status_tail = 0;
1095                 hba->out_req_cnt = 0;
1096                 spin_unlock_irqrestore(hba->host->host_lock, flags);
1097                 return SUCCESS;
1098         }
1099
1100         /* st_yosemite */
1101         writel(MU_INBOUND_DOORBELL_RESET, hba->mmio_base + IDBL);
1102         readl(hba->mmio_base + IDBL); /* flush */
1103         before = jiffies;
1104         while (hba->out_req_cnt > 0) {
1105                 if (time_after(jiffies, before + ST_INTERNAL_TIMEOUT * HZ)) {
1106                         printk(KERN_WARNING DRV_NAME
1107                                 "(%s): reset timeout\n", pci_name(hba->pdev));
1108                         return FAILED;
1109                 }
1110                 msleep(1);
1111         }
1112
1113         hba->mu_status = MU_STATE_STARTED;
1114         return SUCCESS;
1115 }
1116
1117 static int stex_biosparam(struct scsi_device *sdev,
1118         struct block_device *bdev, sector_t capacity, int geom[])
1119 {
1120         int heads = 255, sectors = 63;
1121
1122         if (capacity < 0x200000) {
1123                 heads = 64;
1124                 sectors = 32;
1125         }
1126
1127         sector_div(capacity, heads * sectors);
1128
1129         geom[0] = heads;
1130         geom[1] = sectors;
1131         geom[2] = capacity;
1132
1133         return 0;
1134 }
1135
1136 static struct scsi_host_template driver_template = {
1137         .module                         = THIS_MODULE,
1138         .name                           = DRV_NAME,
1139         .proc_name                      = DRV_NAME,
1140         .bios_param                     = stex_biosparam,
1141         .queuecommand                   = stex_queuecommand,
1142         .slave_alloc                    = stex_slave_alloc,
1143         .slave_configure                = stex_slave_config,
1144         .slave_destroy                  = stex_slave_destroy,
1145         .eh_abort_handler               = stex_abort,
1146         .eh_host_reset_handler          = stex_reset,
1147         .can_queue                      = ST_CAN_QUEUE,
1148         .this_id                        = -1,
1149         .sg_tablesize                   = ST_MAX_SG,
1150         .cmd_per_lun                    = ST_CMD_PER_LUN,
1151 };
1152
1153 static int stex_set_dma_mask(struct pci_dev * pdev)
1154 {
1155         int ret;
1156         if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)
1157                 && !pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK))
1158                 return 0;
1159         ret = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
1160         if (!ret)
1161                 ret = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
1162         return ret;
1163 }
1164
1165 static int __devinit
1166 stex_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1167 {
1168         struct st_hba *hba;
1169         struct Scsi_Host *host;
1170         int err;
1171
1172         err = pci_enable_device(pdev);
1173         if (err)
1174                 return err;
1175
1176         pci_set_master(pdev);
1177
1178         host = scsi_host_alloc(&driver_template, sizeof(struct st_hba));
1179
1180         if (!host) {
1181                 printk(KERN_ERR DRV_NAME "(%s): scsi_host_alloc failed\n",
1182                         pci_name(pdev));
1183                 err = -ENOMEM;
1184                 goto out_disable;
1185         }
1186
1187         hba = (struct st_hba *)host->hostdata;
1188         memset(hba, 0, sizeof(struct st_hba));
1189
1190         err = pci_request_regions(pdev, DRV_NAME);
1191         if (err < 0) {
1192                 printk(KERN_ERR DRV_NAME "(%s): request regions failed\n",
1193                         pci_name(pdev));
1194                 goto out_scsi_host_put;
1195         }
1196
1197         hba->mmio_base = ioremap(pci_resource_start(pdev, 0),
1198                 pci_resource_len(pdev, 0));
1199         if ( !hba->mmio_base) {
1200                 printk(KERN_ERR DRV_NAME "(%s): memory map failed\n",
1201                         pci_name(pdev));
1202                 err = -ENOMEM;
1203                 goto out_release_regions;
1204         }
1205
1206         err = stex_set_dma_mask(pdev);
1207         if (err) {
1208                 printk(KERN_ERR DRV_NAME "(%s): set dma mask failed\n",
1209                         pci_name(pdev));
1210                 goto out_iounmap;
1211         }
1212
1213         hba->cardtype = (unsigned int) id->driver_data;
1214         if (hba->cardtype == st_vsc && (pdev->subsystem_device & 0xf) == 0x1)
1215                 hba->cardtype = st_vsc1;
1216         hba->dma_size = (hba->cardtype == st_vsc1) ?
1217                 (STEX_BUFFER_SIZE + ST_ADDITIONAL_MEM) : (STEX_BUFFER_SIZE);
1218         hba->dma_mem = dma_alloc_coherent(&pdev->dev,
1219                 hba->dma_size, &hba->dma_handle, GFP_KERNEL);
1220         if (!hba->dma_mem) {
1221                 err = -ENOMEM;
1222                 printk(KERN_ERR DRV_NAME "(%s): dma mem alloc failed\n",
1223                         pci_name(pdev));
1224                 goto out_iounmap;
1225         }
1226
1227         hba->status_buffer =
1228                 (struct status_msg *)(hba->dma_mem + MU_REQ_BUFFER_SIZE);
1229         hba->copy_buffer = hba->dma_mem + MU_BUFFER_SIZE;
1230         hba->mu_status = MU_STATE_STARTING;
1231
1232         /* firmware uses id/lun pair for a logical drive, but lun would be
1233            always 0 if CONFIG_SCSI_MULTI_LUN not configured, so we use
1234            channel to map lun here */
1235         host->max_channel = ST_MAX_LUN_PER_TARGET - 1;
1236         host->max_id = ST_MAX_TARGET_NUM;
1237         host->max_lun = 1;
1238         host->unique_id = host->host_no;
1239         host->max_cmd_len = STEX_CDB_LENGTH;
1240
1241         hba->host = host;
1242         hba->pdev = pdev;
1243         init_waitqueue_head(&hba->waitq);
1244
1245         err = request_irq(pdev->irq, stex_intr, IRQF_SHARED, DRV_NAME, hba);
1246         if (err) {
1247                 printk(KERN_ERR DRV_NAME "(%s): request irq failed\n",
1248                         pci_name(pdev));
1249                 goto out_pci_free;
1250         }
1251
1252         err = stex_handshake(hba);
1253         if (err)
1254                 goto out_free_irq;
1255
1256         err = scsi_init_shared_tag_map(host, host->can_queue);
1257         if (err) {
1258                 printk(KERN_ERR DRV_NAME "(%s): init shared queue failed\n",
1259                         pci_name(pdev));
1260                 goto out_free_irq;
1261         }
1262
1263         pci_set_drvdata(pdev, hba);
1264
1265         err = scsi_add_host(host, &pdev->dev);
1266         if (err) {
1267                 printk(KERN_ERR DRV_NAME "(%s): scsi_add_host failed\n",
1268                         pci_name(pdev));
1269                 goto out_free_irq;
1270         }
1271
1272         scsi_scan_host(host);
1273
1274         return 0;
1275
1276 out_free_irq:
1277         free_irq(pdev->irq, hba);
1278 out_pci_free:
1279         dma_free_coherent(&pdev->dev, hba->dma_size,
1280                           hba->dma_mem, hba->dma_handle);
1281 out_iounmap:
1282         iounmap(hba->mmio_base);
1283 out_release_regions:
1284         pci_release_regions(pdev);
1285 out_scsi_host_put:
1286         scsi_host_put(host);
1287 out_disable:
1288         pci_disable_device(pdev);
1289
1290         return err;
1291 }
1292
1293 static void stex_hba_stop(struct st_hba *hba)
1294 {
1295         struct req_msg *req;
1296         unsigned long flags;
1297         unsigned long before;
1298         u16 tag = 0;
1299
1300         spin_lock_irqsave(hba->host->host_lock, flags);
1301         req = stex_alloc_req(hba);
1302         memset(req->cdb, 0, STEX_CDB_LENGTH);
1303
1304         if (hba->cardtype == st_yosemite) {
1305                 req->cdb[0] = MGT_CMD;
1306                 req->cdb[1] = MGT_CMD_SIGNATURE;
1307                 req->cdb[2] = CTLR_CONFIG_CMD;
1308                 req->cdb[3] = CTLR_SHUTDOWN;
1309         } else {
1310                 req->cdb[0] = CONTROLLER_CMD;
1311                 req->cdb[1] = CTLR_POWER_STATE_CHANGE;
1312                 req->cdb[2] = CTLR_POWER_SAVING;
1313         }
1314
1315         hba->ccb[tag].cmd = NULL;
1316         hba->ccb[tag].sg_count = 0;
1317         hba->ccb[tag].sense_bufflen = 0;
1318         hba->ccb[tag].sense_buffer = NULL;
1319         hba->ccb[tag].req_type |= PASSTHRU_REQ_TYPE;
1320
1321         stex_send_cmd(hba, req, tag);
1322         spin_unlock_irqrestore(hba->host->host_lock, flags);
1323
1324         before = jiffies;
1325         while (hba->ccb[tag].req_type & PASSTHRU_REQ_TYPE) {
1326                 if (time_after(jiffies, before + ST_INTERNAL_TIMEOUT * HZ))
1327                         return;
1328                 msleep(10);
1329         }
1330 }
1331
1332 static void stex_hba_free(struct st_hba *hba)
1333 {
1334         free_irq(hba->pdev->irq, hba);
1335
1336         iounmap(hba->mmio_base);
1337
1338         pci_release_regions(hba->pdev);
1339
1340         dma_free_coherent(&hba->pdev->dev, hba->dma_size,
1341                           hba->dma_mem, hba->dma_handle);
1342 }
1343
1344 static void stex_remove(struct pci_dev *pdev)
1345 {
1346         struct st_hba *hba = pci_get_drvdata(pdev);
1347
1348         scsi_remove_host(hba->host);
1349
1350         pci_set_drvdata(pdev, NULL);
1351
1352         stex_hba_stop(hba);
1353
1354         stex_hba_free(hba);
1355
1356         scsi_host_put(hba->host);
1357
1358         pci_disable_device(pdev);
1359 }
1360
1361 static void stex_shutdown(struct pci_dev *pdev)
1362 {
1363         struct st_hba *hba = pci_get_drvdata(pdev);
1364
1365         stex_hba_stop(hba);
1366 }
1367
1368 static struct pci_device_id stex_pci_tbl[] = {
1369         /* st_shasta */
1370         { 0x105a, 0x8350, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1371                 st_shasta }, /* SuperTrak EX8350/8300/16350/16300 */
1372         { 0x105a, 0xc350, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1373                 st_shasta }, /* SuperTrak EX12350 */
1374         { 0x105a, 0x4302, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1375                 st_shasta }, /* SuperTrak EX4350 */
1376         { 0x105a, 0xe350, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1377                 st_shasta }, /* SuperTrak EX24350 */
1378
1379         /* st_vsc */
1380         { 0x105a, 0x7250, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_vsc },
1381
1382         /* st_yosemite */
1383         { 0x105a, 0x8650, PCI_ANY_ID, 0x4600, 0, 0,
1384                 st_yosemite }, /* SuperTrak EX4650 */
1385         { 0x105a, 0x8650, PCI_ANY_ID, 0x4610, 0, 0,
1386                 st_yosemite }, /* SuperTrak EX4650o */
1387         { 0x105a, 0x8650, PCI_ANY_ID, 0x8600, 0, 0,
1388                 st_yosemite }, /* SuperTrak EX8650EL */
1389         { 0x105a, 0x8650, PCI_ANY_ID, 0x8601, 0, 0,
1390                 st_yosemite }, /* SuperTrak EX8650 */
1391         { 0x105a, 0x8650, PCI_ANY_ID, 0x8602, 0, 0,
1392                 st_yosemite }, /* SuperTrak EX8654 */
1393         { 0x105a, 0x8650, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1394                 st_yosemite }, /* generic st_yosemite */
1395         { }     /* terminate list */
1396 };
1397 MODULE_DEVICE_TABLE(pci, stex_pci_tbl);
1398
1399 static struct pci_driver stex_pci_driver = {
1400         .name           = DRV_NAME,
1401         .id_table       = stex_pci_tbl,
1402         .probe          = stex_probe,
1403         .remove         = __devexit_p(stex_remove),
1404         .shutdown       = stex_shutdown,
1405 };
1406
1407 static int __init stex_init(void)
1408 {
1409         printk(KERN_INFO DRV_NAME
1410                 ": Promise SuperTrak EX Driver version: %s\n",
1411                  ST_DRIVER_VERSION);
1412
1413         return pci_register_driver(&stex_pci_driver);
1414 }
1415
1416 static void __exit stex_exit(void)
1417 {
1418         pci_unregister_driver(&stex_pci_driver);
1419 }
1420
1421 module_init(stex_init);
1422 module_exit(stex_exit);