blob: 325c31caa6e0dd98dbce0724b968a7ee5efcba69 [file] [log] [blame]
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001/*
2 * SuperTrak EX Series Storage Controller driver for Linux
3 *
Ed Lin - PTUbd5cd9c2009-01-26 02:42:11 -08004 * Copyright (C) 2005-2009 Promise Technology Inc.
Jeff Garzik5a25ba12006-09-01 03:12:19 -04005 *
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 *
Jeff Garzik5a25ba12006-09-01 03:12:19 -040014 */
15
16#include <linux/init.h>
17#include <linux/errno.h>
18#include <linux/kernel.h>
19#include <linux/delay.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090020#include <linux/slab.h>
Jeff Garzik5a25ba12006-09-01 03:12:19 -040021#include <linux/time.h>
22#include <linux/pci.h>
23#include <linux/blkdev.h>
24#include <linux/interrupt.h>
25#include <linux/types.h>
26#include <linux/module.h>
27#include <linux/spinlock.h>
28#include <asm/io.h>
29#include <asm/irq.h>
30#include <asm/byteorder.h>
31#include <scsi/scsi.h>
32#include <scsi/scsi_device.h>
33#include <scsi/scsi_cmnd.h>
34#include <scsi/scsi_host.h>
Ed Lincf355882006-09-01 14:31:51 +080035#include <scsi/scsi_tcq.h>
Ed Linc25da0a2007-05-09 20:50:42 -080036#include <scsi/scsi_dbg.h>
FUJITA Tomonori11002fb2008-03-25 09:26:52 +090037#include <scsi/scsi_eh.h>
Jeff Garzik5a25ba12006-09-01 03:12:19 -040038
39#define DRV_NAME "stex"
Ed Lincce9c8a2009-09-28 22:58:36 -080040#define ST_DRIVER_VERSION "4.6.0000.4"
Ed Lin05b44602009-03-31 17:30:41 -080041#define ST_VER_MAJOR 4
42#define ST_VER_MINOR 6
43#define ST_OEM 0
Ed Lincce9c8a2009-09-28 22:58:36 -080044#define ST_BUILD_VER 4
Jeff Garzik5a25ba12006-09-01 03:12:19 -040045
46enum {
47 /* MU register offset */
48 IMR0 = 0x10, /* MU_INBOUND_MESSAGE_REG0 */
49 IMR1 = 0x14, /* MU_INBOUND_MESSAGE_REG1 */
50 OMR0 = 0x18, /* MU_OUTBOUND_MESSAGE_REG0 */
51 OMR1 = 0x1c, /* MU_OUTBOUND_MESSAGE_REG1 */
52 IDBL = 0x20, /* MU_INBOUND_DOORBELL */
53 IIS = 0x24, /* MU_INBOUND_INTERRUPT_STATUS */
54 IIM = 0x28, /* MU_INBOUND_INTERRUPT_MASK */
55 ODBL = 0x2c, /* MU_OUTBOUND_DOORBELL */
56 OIS = 0x30, /* MU_OUTBOUND_INTERRUPT_STATUS */
57 OIM = 0x3c, /* MU_OUTBOUND_INTERRUPT_MASK */
58
Ed Lin69cb4872009-08-18 12:15:14 -070059 YIOA_STATUS = 0x00,
Ed Lin0f3f6ee2009-03-31 17:30:36 -080060 YH2I_INT = 0x20,
61 YINT_EN = 0x34,
62 YI2H_INT = 0x9c,
63 YI2H_INT_C = 0xa0,
64 YH2I_REQ = 0xc0,
65 YH2I_REQ_HI = 0xc4,
66
Jeff Garzik5a25ba12006-09-01 03:12:19 -040067 /* MU register value */
Ed Lin9eb46d22009-09-28 22:58:33 -080068 MU_INBOUND_DOORBELL_HANDSHAKE = (1 << 0),
69 MU_INBOUND_DOORBELL_REQHEADCHANGED = (1 << 1),
70 MU_INBOUND_DOORBELL_STATUSTAILCHANGED = (1 << 2),
71 MU_INBOUND_DOORBELL_HMUSTOPPED = (1 << 3),
72 MU_INBOUND_DOORBELL_RESET = (1 << 4),
Jeff Garzik5a25ba12006-09-01 03:12:19 -040073
Ed Lin9eb46d22009-09-28 22:58:33 -080074 MU_OUTBOUND_DOORBELL_HANDSHAKE = (1 << 0),
75 MU_OUTBOUND_DOORBELL_REQUESTTAILCHANGED = (1 << 1),
76 MU_OUTBOUND_DOORBELL_STATUSHEADCHANGED = (1 << 2),
77 MU_OUTBOUND_DOORBELL_BUSCHANGE = (1 << 3),
78 MU_OUTBOUND_DOORBELL_HASEVENT = (1 << 4),
79 MU_OUTBOUND_DOORBELL_REQUEST_RESET = (1 << 27),
Jeff Garzik5a25ba12006-09-01 03:12:19 -040080
81 /* MU status code */
82 MU_STATE_STARTING = 1,
Ed Lin9eb46d22009-09-28 22:58:33 -080083 MU_STATE_STARTED = 2,
84 MU_STATE_RESETTING = 3,
85 MU_STATE_FAILED = 4,
Jeff Garzik5a25ba12006-09-01 03:12:19 -040086
Ed Lin76fbf96f2006-12-04 17:49:42 -080087 MU_MAX_DELAY = 120,
Jeff Garzik5a25ba12006-09-01 03:12:19 -040088 MU_HANDSHAKE_SIGNATURE = 0x55aaaa55,
Ed Lin529e7a62006-12-04 17:49:34 -080089 MU_HANDSHAKE_SIGNATURE_HALF = 0x5a5a0000,
Ed Lin76fbf96f2006-12-04 17:49:42 -080090 MU_HARD_RESET_WAIT = 30000,
Jeff Garzik5a25ba12006-09-01 03:12:19 -040091 HMU_PARTNER_TYPE = 2,
92
93 /* firmware returned values */
94 SRB_STATUS_SUCCESS = 0x01,
95 SRB_STATUS_ERROR = 0x04,
96 SRB_STATUS_BUSY = 0x05,
97 SRB_STATUS_INVALID_REQUEST = 0x06,
98 SRB_STATUS_SELECTION_TIMEOUT = 0x0A,
99 SRB_SEE_SENSE = 0x80,
100
101 /* task attribute */
102 TASK_ATTRIBUTE_SIMPLE = 0x0,
103 TASK_ATTRIBUTE_HEADOFQUEUE = 0x1,
104 TASK_ATTRIBUTE_ORDERED = 0x2,
105 TASK_ATTRIBUTE_ACA = 0x4,
106
Ed Lin0f3f6ee2009-03-31 17:30:36 -0800107 SS_STS_NORMAL = 0x80000000,
108 SS_STS_DONE = 0x40000000,
109 SS_STS_HANDSHAKE = 0x20000000,
110
111 SS_HEAD_HANDSHAKE = 0x80,
112
Ed Lin69cb4872009-08-18 12:15:14 -0700113 SS_H2I_INT_RESET = 0x100,
114
Ed Lin9eb46d22009-09-28 22:58:33 -0800115 SS_I2H_REQUEST_RESET = 0x2000,
116
Ed Lin69cb4872009-08-18 12:15:14 -0700117 SS_MU_OPERATIONAL = 0x80000000,
118
Ed Lin - PTU7cfe99a2009-01-26 02:41:53 -0800119 STEX_CDB_LENGTH = 16,
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400120 STATUS_VAR_LEN = 128,
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400121
122 /* sg flags */
123 SG_CF_EOT = 0x80, /* end of table */
124 SG_CF_64B = 0x40, /* 64 bit item */
125 SG_CF_HOST = 0x20, /* sg in host memory */
Ed Lin - PTU7cfe99a2009-01-26 02:41:53 -0800126 MSG_DATA_DIR_ND = 0,
127 MSG_DATA_DIR_IN = 1,
128 MSG_DATA_DIR_OUT = 2,
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400129
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400130 st_shasta = 0,
131 st_vsc = 1,
Ed Lin591a3a52009-03-31 17:30:31 -0800132 st_yosemite = 2,
133 st_seq = 3,
Ed Lin0f3f6ee2009-03-31 17:30:36 -0800134 st_yel = 4,
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400135
136 PASSTHRU_REQ_TYPE = 0x00000001,
137 PASSTHRU_REQ_NO_WAKEUP = 0x00000100,
Ed Lin - PTU7cfe99a2009-01-26 02:41:53 -0800138 ST_INTERNAL_TIMEOUT = 180,
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400139
Ed Linfb4f66b2006-09-27 19:23:41 +0800140 ST_TO_CMD = 0,
141 ST_FROM_CMD = 1,
142
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400143 /* vendor specific commands of Promise */
Ed Linfb4f66b2006-09-27 19:23:41 +0800144 MGT_CMD = 0xd8,
145 SINBAND_MGT_CMD = 0xd9,
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400146 ARRAY_CMD = 0xe0,
147 CONTROLLER_CMD = 0xe1,
148 DEBUGGING_CMD = 0xe2,
149 PASSTHRU_CMD = 0xe3,
150
151 PASSTHRU_GET_ADAPTER = 0x05,
152 PASSTHRU_GET_DRVVER = 0x10,
Ed Linfb4f66b2006-09-27 19:23:41 +0800153
154 CTLR_CONFIG_CMD = 0x03,
155 CTLR_SHUTDOWN = 0x0d,
156
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400157 CTLR_POWER_STATE_CHANGE = 0x0e,
158 CTLR_POWER_SAVING = 0x01,
159
160 PASSTHRU_SIGNATURE = 0x4e415041,
Ed Linfb4f66b2006-09-27 19:23:41 +0800161 MGT_CMD_SIGNATURE = 0xba,
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400162
163 INQUIRY_EVPD = 0x01,
Ed Lin94e91082006-12-04 17:49:39 -0800164
165 ST_ADDITIONAL_MEM = 0x200000,
Ed Lincbacfb52009-09-28 22:58:17 -0800166 ST_ADDITIONAL_MEM_MIN = 0x80000,
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400167};
168
169struct st_sgitem {
170 u8 ctrl; /* SG_CF_xxx */
171 u8 reserved[3];
172 __le32 count;
Ed Linf14981612009-03-31 17:30:19 -0800173 __le64 addr;
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400174};
175
Ed Lin0f3f6ee2009-03-31 17:30:36 -0800176struct st_ss_sgitem {
177 __le32 addr;
178 __le32 addr_hi;
179 __le32 count;
180};
181
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400182struct st_sgtable {
183 __le16 sg_count;
184 __le16 max_sg_count;
185 __le32 sz_in_byte;
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400186};
187
Ed Lin0f3f6ee2009-03-31 17:30:36 -0800188struct st_msg_header {
189 __le64 handle;
190 u8 flag;
191 u8 channel;
192 __le16 timeout;
193 u32 reserved;
194};
195
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400196struct handshake_frame {
Ed Linf14981612009-03-31 17:30:19 -0800197 __le64 rb_phy; /* request payload queue physical address */
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400198 __le16 req_sz; /* size of each request payload */
199 __le16 req_cnt; /* count of reqs the buffer can hold */
200 __le16 status_sz; /* size of each status payload */
201 __le16 status_cnt; /* count of status the buffer can hold */
Ed Linf14981612009-03-31 17:30:19 -0800202 __le64 hosttime; /* seconds from Jan 1, 1970 (GMT) */
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400203 u8 partner_type; /* who sends this frame */
204 u8 reserved0[7];
205 __le32 partner_ver_major;
206 __le32 partner_ver_minor;
207 __le32 partner_ver_oem;
208 __le32 partner_ver_build;
Ed Lin94e91082006-12-04 17:49:39 -0800209 __le32 extra_offset; /* NEW */
210 __le32 extra_size; /* NEW */
Ed Lin0f3f6ee2009-03-31 17:30:36 -0800211 __le32 scratch_size;
212 u32 reserved1;
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400213};
214
215struct req_msg {
216 __le16 tag;
217 u8 lun;
218 u8 target;
219 u8 task_attr;
220 u8 task_manage;
Ed Lin - PTU7cfe99a2009-01-26 02:41:53 -0800221 u8 data_dir;
Ed Linf903d7b72006-09-27 19:23:33 +0800222 u8 payload_sz; /* payload size in 4-byte, not used */
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400223 u8 cdb[STEX_CDB_LENGTH];
Ed Lin591a3a52009-03-31 17:30:31 -0800224 u32 variable[0];
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400225};
226
227struct status_msg {
228 __le16 tag;
229 u8 lun;
230 u8 target;
231 u8 srb_status;
232 u8 scsi_status;
233 u8 reserved;
234 u8 payload_sz; /* payload size in 4-byte */
235 u8 variable[STATUS_VAR_LEN];
236};
237
238struct ver_info {
239 u32 major;
240 u32 minor;
241 u32 oem;
242 u32 build;
243 u32 reserved[2];
244};
245
246struct st_frame {
247 u32 base[6];
248 u32 rom_addr;
249
250 struct ver_info drv_ver;
251 struct ver_info bios_ver;
252
253 u32 bus;
254 u32 slot;
255 u32 irq_level;
256 u32 irq_vec;
257 u32 id;
258 u32 subid;
259
260 u32 dimm_size;
261 u8 dimm_type;
262 u8 reserved[3];
263
264 u32 channel;
265 u32 reserved1;
266};
267
268struct st_drvver {
269 u32 major;
270 u32 minor;
271 u32 oem;
272 u32 build;
273 u32 signature[2];
274 u8 console_id;
275 u8 host_no;
276 u8 reserved0[2];
277 u32 reserved[3];
278};
279
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400280struct st_ccb {
281 struct req_msg *req;
282 struct scsi_cmnd *cmd;
283
284 void *sense_buffer;
285 unsigned int sense_bufflen;
286 int sg_count;
287
288 u32 req_type;
289 u8 srb_status;
290 u8 scsi_status;
Ed Linf14981612009-03-31 17:30:19 -0800291 u8 reserved[2];
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400292};
293
294struct st_hba {
295 void __iomem *mmio_base; /* iomapped PCI memory space */
296 void *dma_mem;
297 dma_addr_t dma_handle;
Ed Lin94e91082006-12-04 17:49:39 -0800298 size_t dma_size;
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400299
300 struct Scsi_Host *host;
301 struct pci_dev *pdev;
302
Ed Lin0f3f6ee2009-03-31 17:30:36 -0800303 struct req_msg * (*alloc_rq) (struct st_hba *);
304 int (*map_sg)(struct st_hba *, struct req_msg *, struct st_ccb *);
305 void (*send) (struct st_hba *, struct req_msg *, u16);
306
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400307 u32 req_head;
308 u32 req_tail;
309 u32 status_head;
310 u32 status_tail;
311
312 struct status_msg *status_buffer;
313 void *copy_buffer; /* temp buffer for driver-handled commands */
Ed Lin591a3a52009-03-31 17:30:31 -0800314 struct st_ccb *ccb;
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400315 struct st_ccb *wait_ccb;
Ed Lin0f3f6ee2009-03-31 17:30:36 -0800316 __le32 *scratch;
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400317
Ed Lin9eb46d22009-09-28 22:58:33 -0800318 char work_q_name[20];
319 struct workqueue_struct *work_q;
320 struct work_struct reset_work;
321 wait_queue_head_t reset_waitq;
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400322 unsigned int mu_status;
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400323 unsigned int cardtype;
Ed Lin99946f82009-03-31 17:30:25 -0800324 int msi_enabled;
325 int out_req_cnt;
Ed Lin591a3a52009-03-31 17:30:31 -0800326 u32 extra_offset;
327 u16 rq_count;
328 u16 rq_size;
329 u16 sts_count;
330};
331
332struct st_card_info {
Ed Lin0f3f6ee2009-03-31 17:30:36 -0800333 struct req_msg * (*alloc_rq) (struct st_hba *);
334 int (*map_sg)(struct st_hba *, struct req_msg *, struct st_ccb *);
335 void (*send) (struct st_hba *, struct req_msg *, u16);
Ed Lin591a3a52009-03-31 17:30:31 -0800336 unsigned int max_id;
337 unsigned int max_lun;
338 unsigned int max_channel;
339 u16 rq_count;
340 u16 rq_size;
341 u16 sts_count;
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400342};
343
Ed Lin99946f82009-03-31 17:30:25 -0800344static int msi;
345module_param(msi, int, 0);
346MODULE_PARM_DESC(msi, "Enable Message Signaled Interrupts(0=off, 1=on)");
347
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400348static const char console_inq_page[] =
349{
350 0x03,0x00,0x03,0x03,0xFA,0x00,0x00,0x30,
351 0x50,0x72,0x6F,0x6D,0x69,0x73,0x65,0x20, /* "Promise " */
352 0x52,0x41,0x49,0x44,0x20,0x43,0x6F,0x6E, /* "RAID Con" */
353 0x73,0x6F,0x6C,0x65,0x20,0x20,0x20,0x20, /* "sole " */
354 0x31,0x2E,0x30,0x30,0x20,0x20,0x20,0x20, /* "1.00 " */
355 0x53,0x58,0x2F,0x52,0x53,0x41,0x46,0x2D, /* "SX/RSAF-" */
356 0x54,0x45,0x31,0x2E,0x30,0x30,0x20,0x20, /* "TE1.00 " */
357 0x0C,0x20,0x20,0x20,0x20,0x20,0x20,0x20
358};
359
360MODULE_AUTHOR("Ed Lin");
361MODULE_DESCRIPTION("Promise Technology SuperTrak EX Controllers");
362MODULE_LICENSE("GPL");
363MODULE_VERSION(ST_DRIVER_VERSION);
364
Ed Linf14981612009-03-31 17:30:19 -0800365static void stex_gettime(__le64 *time)
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400366{
367 struct timeval tv;
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400368
Ed Lin - PTU7cfe99a2009-01-26 02:41:53 -0800369 do_gettimeofday(&tv);
Ed Linf14981612009-03-31 17:30:19 -0800370 *time = cpu_to_le64(tv.tv_sec);
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400371}
372
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400373static struct status_msg *stex_get_status(struct st_hba *hba)
374{
Ed Linf14981612009-03-31 17:30:19 -0800375 struct status_msg *status = hba->status_buffer + hba->status_tail;
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400376
377 ++hba->status_tail;
Ed Lin591a3a52009-03-31 17:30:31 -0800378 hba->status_tail %= hba->sts_count+1;
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400379
380 return status;
381}
382
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400383static void stex_invalid_field(struct scsi_cmnd *cmd,
384 void (*done)(struct scsi_cmnd *))
385{
FUJITA Tomonori11002fb2008-03-25 09:26:52 +0900386 cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
387
Ed Lin - PTU7cfe99a2009-01-26 02:41:53 -0800388 /* "Invalid field in cdb" */
FUJITA Tomonori11002fb2008-03-25 09:26:52 +0900389 scsi_build_sense_buffer(0, cmd->sense_buffer, ILLEGAL_REQUEST, 0x24,
390 0x0);
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400391 done(cmd);
392}
393
394static struct req_msg *stex_alloc_req(struct st_hba *hba)
395{
Ed Lin591a3a52009-03-31 17:30:31 -0800396 struct req_msg *req = hba->dma_mem + hba->req_head * hba->rq_size;
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400397
398 ++hba->req_head;
Ed Lin591a3a52009-03-31 17:30:31 -0800399 hba->req_head %= hba->rq_count+1;
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400400
401 return req;
402}
403
Ed Lin0f3f6ee2009-03-31 17:30:36 -0800404static struct req_msg *stex_ss_alloc_req(struct st_hba *hba)
405{
406 return (struct req_msg *)(hba->dma_mem +
407 hba->req_head * hba->rq_size + sizeof(struct st_msg_header));
408}
409
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400410static int stex_map_sg(struct st_hba *hba,
411 struct req_msg *req, struct st_ccb *ccb)
412{
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400413 struct scsi_cmnd *cmd;
FUJITA Tomonorid5587d52007-05-26 10:01:24 +0900414 struct scatterlist *sg;
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400415 struct st_sgtable *dst;
Ed Linf14981612009-03-31 17:30:19 -0800416 struct st_sgitem *table;
FUJITA Tomonorid5587d52007-05-26 10:01:24 +0900417 int i, nseg;
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400418
419 cmd = ccb->cmd;
FUJITA Tomonorid5587d52007-05-26 10:01:24 +0900420 nseg = scsi_dma_map(cmd);
Ed Linf14981612009-03-31 17:30:19 -0800421 BUG_ON(nseg < 0);
FUJITA Tomonorid5587d52007-05-26 10:01:24 +0900422 if (nseg) {
Ed Linf14981612009-03-31 17:30:19 -0800423 dst = (struct st_sgtable *)req->variable;
424
FUJITA Tomonorid5587d52007-05-26 10:01:24 +0900425 ccb->sg_count = nseg;
426 dst->sg_count = cpu_to_le16((u16)nseg);
Ed Linf14981612009-03-31 17:30:19 -0800427 dst->max_sg_count = cpu_to_le16(hba->host->sg_tablesize);
428 dst->sz_in_byte = cpu_to_le32(scsi_bufflen(cmd));
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400429
Ed Linf14981612009-03-31 17:30:19 -0800430 table = (struct st_sgitem *)(dst + 1);
FUJITA Tomonorid5587d52007-05-26 10:01:24 +0900431 scsi_for_each_sg(cmd, sg, nseg, i) {
Ed Linf14981612009-03-31 17:30:19 -0800432 table[i].count = cpu_to_le32((u32)sg_dma_len(sg));
433 table[i].addr = cpu_to_le64(sg_dma_address(sg));
434 table[i].ctrl = SG_CF_64B | SG_CF_HOST;
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400435 }
Ed Linf14981612009-03-31 17:30:19 -0800436 table[--i].ctrl |= SG_CF_EOT;
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400437 }
438
Ed Linf14981612009-03-31 17:30:19 -0800439 return nseg;
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400440}
441
Ed Lin0f3f6ee2009-03-31 17:30:36 -0800442static int stex_ss_map_sg(struct st_hba *hba,
443 struct req_msg *req, struct st_ccb *ccb)
444{
445 struct scsi_cmnd *cmd;
446 struct scatterlist *sg;
447 struct st_sgtable *dst;
448 struct st_ss_sgitem *table;
449 int i, nseg;
450
451 cmd = ccb->cmd;
452 nseg = scsi_dma_map(cmd);
453 BUG_ON(nseg < 0);
454 if (nseg) {
455 dst = (struct st_sgtable *)req->variable;
456
457 ccb->sg_count = nseg;
458 dst->sg_count = cpu_to_le16((u16)nseg);
459 dst->max_sg_count = cpu_to_le16(hba->host->sg_tablesize);
460 dst->sz_in_byte = cpu_to_le32(scsi_bufflen(cmd));
461
462 table = (struct st_ss_sgitem *)(dst + 1);
463 scsi_for_each_sg(cmd, sg, nseg, i) {
464 table[i].count = cpu_to_le32((u32)sg_dma_len(sg));
465 table[i].addr =
466 cpu_to_le32(sg_dma_address(sg) & 0xffffffff);
467 table[i].addr_hi =
468 cpu_to_le32((sg_dma_address(sg) >> 16) >> 16);
469 }
470 }
471
472 return nseg;
473}
474
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400475static void stex_controller_info(struct st_hba *hba, struct st_ccb *ccb)
476{
477 struct st_frame *p;
478 size_t count = sizeof(struct st_frame);
479
480 p = hba->copy_buffer;
Ed Linf14981612009-03-31 17:30:19 -0800481 scsi_sg_copy_to_buffer(ccb->cmd, p, count);
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400482 memset(p->base, 0, sizeof(u32)*6);
483 *(unsigned long *)(p->base) = pci_resource_start(hba->pdev, 0);
484 p->rom_addr = 0;
485
486 p->drv_ver.major = ST_VER_MAJOR;
487 p->drv_ver.minor = ST_VER_MINOR;
488 p->drv_ver.oem = ST_OEM;
489 p->drv_ver.build = ST_BUILD_VER;
490
491 p->bus = hba->pdev->bus->number;
492 p->slot = hba->pdev->devfn;
493 p->irq_level = 0;
494 p->irq_vec = hba->pdev->irq;
495 p->id = hba->pdev->vendor << 16 | hba->pdev->device;
496 p->subid =
497 hba->pdev->subsystem_vendor << 16 | hba->pdev->subsystem_device;
498
Ed Linf14981612009-03-31 17:30:19 -0800499 scsi_sg_copy_from_buffer(ccb->cmd, p, count);
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400500}
501
502static void
503stex_send_cmd(struct st_hba *hba, struct req_msg *req, u16 tag)
504{
505 req->tag = cpu_to_le16(tag);
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400506
507 hba->ccb[tag].req = req;
508 hba->out_req_cnt++;
509
510 writel(hba->req_head, hba->mmio_base + IMR0);
511 writel(MU_INBOUND_DOORBELL_REQHEADCHANGED, hba->mmio_base + IDBL);
512 readl(hba->mmio_base + IDBL); /* flush */
513}
514
Ed Lin0f3f6ee2009-03-31 17:30:36 -0800515static void
516stex_ss_send_cmd(struct st_hba *hba, struct req_msg *req, u16 tag)
517{
518 struct scsi_cmnd *cmd;
519 struct st_msg_header *msg_h;
520 dma_addr_t addr;
521
522 req->tag = cpu_to_le16(tag);
523
524 hba->ccb[tag].req = req;
525 hba->out_req_cnt++;
526
527 cmd = hba->ccb[tag].cmd;
528 msg_h = (struct st_msg_header *)req - 1;
529 if (likely(cmd)) {
530 msg_h->channel = (u8)cmd->device->channel;
531 msg_h->timeout = cpu_to_le16(cmd->request->timeout/HZ);
532 }
533 addr = hba->dma_handle + hba->req_head * hba->rq_size;
534 addr += (hba->ccb[tag].sg_count+4)/11;
535 msg_h->handle = cpu_to_le64(addr);
536
537 ++hba->req_head;
538 hba->req_head %= hba->rq_count+1;
539
540 writel((addr >> 16) >> 16, hba->mmio_base + YH2I_REQ_HI);
541 readl(hba->mmio_base + YH2I_REQ_HI); /* flush */
542 writel(addr, hba->mmio_base + YH2I_REQ);
543 readl(hba->mmio_base + YH2I_REQ); /* flush */
544}
545
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400546static int
Ed Lincf355882006-09-01 14:31:51 +0800547stex_slave_alloc(struct scsi_device *sdev)
548{
549 /* Cheat: usually extracted from Inquiry data */
550 sdev->tagged_supported = 1;
551
Ed Linf14981612009-03-31 17:30:19 -0800552 scsi_activate_tcq(sdev, sdev->host->can_queue);
Ed Lincf355882006-09-01 14:31:51 +0800553
554 return 0;
555}
556
557static int
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400558stex_slave_config(struct scsi_device *sdev)
559{
560 sdev->use_10_for_rw = 1;
561 sdev->use_10_for_ms = 1;
James Bottomleydc5c49b2008-11-30 10:38:08 -0600562 blk_queue_rq_timeout(sdev->request_queue, 60 * HZ);
Ed Lincf355882006-09-01 14:31:51 +0800563 sdev->tagged_supported = 1;
564
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400565 return 0;
566}
567
568static void
569stex_slave_destroy(struct scsi_device *sdev)
570{
Ed Lincf355882006-09-01 14:31:51 +0800571 scsi_deactivate_tcq(sdev, 1);
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400572}
573
574static int
Jeff Garzikf2812332010-11-16 02:10:29 -0500575stex_queuecommand_lck(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400576{
577 struct st_hba *hba;
578 struct Scsi_Host *host;
Ed Linf14981612009-03-31 17:30:19 -0800579 unsigned int id, lun;
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400580 struct req_msg *req;
581 u16 tag;
Ed Lin - PTU7cfe99a2009-01-26 02:41:53 -0800582
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400583 host = cmd->device->host;
584 id = cmd->device->id;
Ed Line0b2e592007-05-09 20:50:33 -0800585 lun = cmd->device->lun;
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400586 hba = (struct st_hba *) &host->hostdata[0];
587
Ed Lin9eb46d22009-09-28 22:58:33 -0800588 if (unlikely(hba->mu_status == MU_STATE_RESETTING))
589 return SCSI_MLQUEUE_HOST_BUSY;
590
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400591 switch (cmd->cmnd[0]) {
592 case MODE_SENSE_10:
593 {
594 static char ms10_caching_page[12] =
595 { 0, 0x12, 0, 0, 0, 0, 0, 0, 0x8, 0xa, 0x4, 0 };
596 unsigned char page;
Ed Lin - PTU7cfe99a2009-01-26 02:41:53 -0800597
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400598 page = cmd->cmnd[2] & 0x3f;
599 if (page == 0x8 || page == 0x3f) {
FUJITA Tomonori31fe47d2008-03-09 13:44:35 +0900600 scsi_sg_copy_from_buffer(cmd, ms10_caching_page,
601 sizeof(ms10_caching_page));
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400602 cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
603 done(cmd);
604 } else
605 stex_invalid_field(cmd, done);
606 return 0;
607 }
Ed Line0b2e592007-05-09 20:50:33 -0800608 case REPORT_LUNS:
609 /*
610 * The shasta firmware does not report actual luns in the
611 * target, so fail the command to force sequential lun scan.
612 * Also, the console device does not support this command.
613 */
614 if (hba->cardtype == st_shasta || id == host->max_id - 1) {
615 stex_invalid_field(cmd, done);
616 return 0;
617 }
618 break;
Ed Lind116a7b2007-05-09 20:50:40 -0800619 case TEST_UNIT_READY:
620 if (id == host->max_id - 1) {
621 cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
622 done(cmd);
623 return 0;
624 }
625 break;
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400626 case INQUIRY:
Ed Lin91e6eca2009-12-18 17:34:51 -0800627 if (lun >= host->max_lun) {
628 cmd->result = DID_NO_CONNECT << 16;
629 done(cmd);
630 return 0;
631 }
Ed Line0b2e592007-05-09 20:50:33 -0800632 if (id != host->max_id - 1)
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400633 break;
Ed Lin0f3f6ee2009-03-31 17:30:36 -0800634 if (!lun && !cmd->device->channel &&
635 (cmd->cmnd[1] & INQUIRY_EVPD) == 0) {
FUJITA Tomonori31fe47d2008-03-09 13:44:35 +0900636 scsi_sg_copy_from_buffer(cmd, (void *)console_inq_page,
637 sizeof(console_inq_page));
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400638 cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
639 done(cmd);
640 } else
641 stex_invalid_field(cmd, done);
642 return 0;
643 case PASSTHRU_CMD:
644 if (cmd->cmnd[1] == PASSTHRU_GET_DRVVER) {
645 struct st_drvver ver;
FUJITA Tomonori26106e32008-02-22 23:11:03 +0900646 size_t cp_len = sizeof(ver);
Ed Lin - PTU7cfe99a2009-01-26 02:41:53 -0800647
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400648 ver.major = ST_VER_MAJOR;
649 ver.minor = ST_VER_MINOR;
650 ver.oem = ST_OEM;
651 ver.build = ST_BUILD_VER;
652 ver.signature[0] = PASSTHRU_SIGNATURE;
Ed Line0b2e592007-05-09 20:50:33 -0800653 ver.console_id = host->max_id - 1;
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400654 ver.host_no = hba->host->host_no;
FUJITA Tomonori31fe47d2008-03-09 13:44:35 +0900655 cp_len = scsi_sg_copy_from_buffer(cmd, &ver, cp_len);
FUJITA Tomonori26106e32008-02-22 23:11:03 +0900656 cmd->result = sizeof(ver) == cp_len ?
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400657 DID_OK << 16 | COMMAND_COMPLETE << 8 :
658 DID_ERROR << 16 | COMMAND_COMPLETE << 8;
659 done(cmd);
660 return 0;
661 }
662 default:
663 break;
664 }
665
666 cmd->scsi_done = done;
667
Ed Lincf355882006-09-01 14:31:51 +0800668 tag = cmd->request->tag;
669
670 if (unlikely(tag >= host->can_queue))
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400671 return SCSI_MLQUEUE_HOST_BUSY;
672
Ed Lin0f3f6ee2009-03-31 17:30:36 -0800673 req = hba->alloc_rq(hba);
Ed Linfb4f66b2006-09-27 19:23:41 +0800674
Ed Line0b2e592007-05-09 20:50:33 -0800675 req->lun = lun;
676 req->target = id;
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400677
678 /* cdb */
679 memcpy(req->cdb, cmd->cmnd, STEX_CDB_LENGTH);
680
Ed Lin - PTU7cfe99a2009-01-26 02:41:53 -0800681 if (cmd->sc_data_direction == DMA_FROM_DEVICE)
682 req->data_dir = MSG_DATA_DIR_IN;
683 else if (cmd->sc_data_direction == DMA_TO_DEVICE)
684 req->data_dir = MSG_DATA_DIR_OUT;
685 else
686 req->data_dir = MSG_DATA_DIR_ND;
687
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400688 hba->ccb[tag].cmd = cmd;
689 hba->ccb[tag].sense_bufflen = SCSI_SENSE_BUFFERSIZE;
690 hba->ccb[tag].sense_buffer = cmd->sense_buffer;
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400691
Ed Lin0f3f6ee2009-03-31 17:30:36 -0800692 if (!hba->map_sg(hba, req, &hba->ccb[tag])) {
693 hba->ccb[tag].sg_count = 0;
694 memset(&req->variable[0], 0, 8);
695 }
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400696
Ed Lin0f3f6ee2009-03-31 17:30:36 -0800697 hba->send(hba, req, tag);
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400698 return 0;
699}
700
Jeff Garzikf2812332010-11-16 02:10:29 -0500701static DEF_SCSI_QCMD(stex_queuecommand)
702
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400703static void stex_scsi_done(struct st_ccb *ccb)
704{
705 struct scsi_cmnd *cmd = ccb->cmd;
706 int result;
707
Ed Linf14981612009-03-31 17:30:19 -0800708 if (ccb->srb_status == SRB_STATUS_SUCCESS || ccb->srb_status == 0) {
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400709 result = ccb->scsi_status;
710 switch (ccb->scsi_status) {
711 case SAM_STAT_GOOD:
712 result |= DID_OK << 16 | COMMAND_COMPLETE << 8;
713 break;
714 case SAM_STAT_CHECK_CONDITION:
715 result |= DRIVER_SENSE << 24;
716 break;
717 case SAM_STAT_BUSY:
718 result |= DID_BUS_BUSY << 16 | COMMAND_COMPLETE << 8;
719 break;
720 default:
721 result |= DID_ERROR << 16 | COMMAND_COMPLETE << 8;
722 break;
723 }
724 }
725 else if (ccb->srb_status & SRB_SEE_SENSE)
726 result = DRIVER_SENSE << 24 | SAM_STAT_CHECK_CONDITION;
727 else switch (ccb->srb_status) {
728 case SRB_STATUS_SELECTION_TIMEOUT:
729 result = DID_NO_CONNECT << 16 | COMMAND_COMPLETE << 8;
730 break;
731 case SRB_STATUS_BUSY:
732 result = DID_BUS_BUSY << 16 | COMMAND_COMPLETE << 8;
733 break;
734 case SRB_STATUS_INVALID_REQUEST:
735 case SRB_STATUS_ERROR:
736 default:
737 result = DID_ERROR << 16 | COMMAND_COMPLETE << 8;
738 break;
739 }
740
741 cmd->result = result;
742 cmd->scsi_done(cmd);
743}
744
745static void stex_copy_data(struct st_ccb *ccb,
746 struct status_msg *resp, unsigned int variable)
747{
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400748 if (resp->scsi_status != SAM_STAT_GOOD) {
749 if (ccb->sense_buffer != NULL)
750 memcpy(ccb->sense_buffer, resp->variable,
751 min(variable, ccb->sense_bufflen));
752 return;
753 }
754
755 if (ccb->cmd == NULL)
756 return;
Ed Linf14981612009-03-31 17:30:19 -0800757 scsi_sg_copy_from_buffer(ccb->cmd, resp->variable, variable);
Ed Linfb4f66b2006-09-27 19:23:41 +0800758}
759
Ed Linf14981612009-03-31 17:30:19 -0800760static void stex_check_cmd(struct st_hba *hba,
Ed Linfb4f66b2006-09-27 19:23:41 +0800761 struct st_ccb *ccb, struct status_msg *resp)
762{
Ed Linfb4f66b2006-09-27 19:23:41 +0800763 if (ccb->cmd->cmnd[0] == MGT_CMD &&
Ed Linf14981612009-03-31 17:30:19 -0800764 resp->scsi_status != SAM_STAT_CHECK_CONDITION)
Ed Lin968a5762007-07-05 12:09:06 -0700765 scsi_set_resid(ccb->cmd, scsi_bufflen(ccb->cmd) -
766 le32_to_cpu(*(__le32 *)&resp->variable[0]));
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400767}
768
769static void stex_mu_intr(struct st_hba *hba, u32 doorbell)
770{
771 void __iomem *base = hba->mmio_base;
772 struct status_msg *resp;
773 struct st_ccb *ccb;
774 unsigned int size;
775 u16 tag;
776
Ed Linf14981612009-03-31 17:30:19 -0800777 if (unlikely(!(doorbell & MU_OUTBOUND_DOORBELL_STATUSHEADCHANGED)))
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400778 return;
779
780 /* status payloads */
781 hba->status_head = readl(base + OMR1);
Ed Lin591a3a52009-03-31 17:30:31 -0800782 if (unlikely(hba->status_head > hba->sts_count)) {
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400783 printk(KERN_WARNING DRV_NAME "(%s): invalid status head\n",
784 pci_name(hba->pdev));
785 return;
786 }
787
Ed Linfb4f66b2006-09-27 19:23:41 +0800788 /*
789 * it's not a valid status payload if:
790 * 1. there are no pending requests(e.g. during init stage)
791 * 2. there are some pending requests, but the controller is in
792 * reset status, and its type is not st_yosemite
793 * firmware of st_yosemite in reset status will return pending requests
794 * to driver, so we allow it to pass
795 */
796 if (unlikely(hba->out_req_cnt <= 0 ||
797 (hba->mu_status == MU_STATE_RESETTING &&
798 hba->cardtype != st_yosemite))) {
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400799 hba->status_tail = hba->status_head;
800 goto update_status;
801 }
802
803 while (hba->status_tail != hba->status_head) {
804 resp = stex_get_status(hba);
805 tag = le16_to_cpu(resp->tag);
Ed Lincf355882006-09-01 14:31:51 +0800806 if (unlikely(tag >= hba->host->can_queue)) {
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400807 printk(KERN_WARNING DRV_NAME
808 "(%s): invalid tag\n", pci_name(hba->pdev));
809 continue;
810 }
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400811
Ed Linf14981612009-03-31 17:30:19 -0800812 hba->out_req_cnt--;
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400813 ccb = &hba->ccb[tag];
Ed Linf14981612009-03-31 17:30:19 -0800814 if (unlikely(hba->wait_ccb == ccb))
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400815 hba->wait_ccb = NULL;
816 if (unlikely(ccb->req == NULL)) {
817 printk(KERN_WARNING DRV_NAME
818 "(%s): lagging req\n", pci_name(hba->pdev));
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400819 continue;
820 }
821
822 size = resp->payload_sz * sizeof(u32); /* payload size */
823 if (unlikely(size < sizeof(*resp) - STATUS_VAR_LEN ||
824 size > sizeof(*resp))) {
825 printk(KERN_WARNING DRV_NAME "(%s): bad status size\n",
826 pci_name(hba->pdev));
827 } else {
828 size -= sizeof(*resp) - STATUS_VAR_LEN; /* copy size */
829 if (size)
830 stex_copy_data(ccb, resp, size);
831 }
832
Ed Lin - PTUdd48ebf2009-01-26 02:40:11 -0800833 ccb->req = NULL;
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400834 ccb->srb_status = resp->srb_status;
835 ccb->scsi_status = resp->scsi_status;
836
Ed Lincf355882006-09-01 14:31:51 +0800837 if (likely(ccb->cmd != NULL)) {
Ed Linfb4f66b2006-09-27 19:23:41 +0800838 if (hba->cardtype == st_yosemite)
Ed Linf14981612009-03-31 17:30:19 -0800839 stex_check_cmd(hba, ccb, resp);
Ed Linfb4f66b2006-09-27 19:23:41 +0800840
Ed Lincf355882006-09-01 14:31:51 +0800841 if (unlikely(ccb->cmd->cmnd[0] == PASSTHRU_CMD &&
842 ccb->cmd->cmnd[1] == PASSTHRU_GET_ADAPTER))
843 stex_controller_info(hba, ccb);
Ed Linfb4f66b2006-09-27 19:23:41 +0800844
FUJITA Tomonorid5587d52007-05-26 10:01:24 +0900845 scsi_dma_unmap(ccb->cmd);
Ed Lincf355882006-09-01 14:31:51 +0800846 stex_scsi_done(ccb);
Ed Linf14981612009-03-31 17:30:19 -0800847 } else
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400848 ccb->req_type = 0;
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400849 }
850
851update_status:
852 writel(hba->status_head, base + IMR1);
853 readl(base + IMR1); /* flush */
854}
855
David Howells7d12e782006-10-05 14:55:46 +0100856static irqreturn_t stex_intr(int irq, void *__hba)
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400857{
858 struct st_hba *hba = __hba;
859 void __iomem *base = hba->mmio_base;
860 u32 data;
861 unsigned long flags;
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400862
863 spin_lock_irqsave(hba->host->host_lock, flags);
864
865 data = readl(base + ODBL);
866
867 if (data && data != 0xffffffff) {
868 /* clear the interrupt */
869 writel(data, base + ODBL);
870 readl(base + ODBL); /* flush */
871 stex_mu_intr(hba, data);
Ed Lin9eb46d22009-09-28 22:58:33 -0800872 spin_unlock_irqrestore(hba->host->host_lock, flags);
873 if (unlikely(data & MU_OUTBOUND_DOORBELL_REQUEST_RESET &&
874 hba->cardtype == st_shasta))
875 queue_work(hba->work_q, &hba->reset_work);
876 return IRQ_HANDLED;
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400877 }
878
879 spin_unlock_irqrestore(hba->host->host_lock, flags);
880
Ed Lin9eb46d22009-09-28 22:58:33 -0800881 return IRQ_NONE;
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400882}
883
Ed Lin0f3f6ee2009-03-31 17:30:36 -0800884static void stex_ss_mu_intr(struct st_hba *hba)
885{
886 struct status_msg *resp;
887 struct st_ccb *ccb;
888 __le32 *scratch;
889 unsigned int size;
890 int count = 0;
891 u32 value;
892 u16 tag;
893
894 if (unlikely(hba->out_req_cnt <= 0 ||
895 hba->mu_status == MU_STATE_RESETTING))
896 return;
897
898 while (count < hba->sts_count) {
899 scratch = hba->scratch + hba->status_tail;
900 value = le32_to_cpu(*scratch);
901 if (unlikely(!(value & SS_STS_NORMAL)))
902 return;
903
904 resp = hba->status_buffer + hba->status_tail;
905 *scratch = 0;
906 ++count;
907 ++hba->status_tail;
908 hba->status_tail %= hba->sts_count+1;
909
910 tag = (u16)value;
911 if (unlikely(tag >= hba->host->can_queue)) {
912 printk(KERN_WARNING DRV_NAME
Ed Lin69cb4872009-08-18 12:15:14 -0700913 "(%s): invalid tag\n", pci_name(hba->pdev));
Ed Lin0f3f6ee2009-03-31 17:30:36 -0800914 continue;
915 }
916
917 hba->out_req_cnt--;
918 ccb = &hba->ccb[tag];
919 if (unlikely(hba->wait_ccb == ccb))
920 hba->wait_ccb = NULL;
921 if (unlikely(ccb->req == NULL)) {
922 printk(KERN_WARNING DRV_NAME
923 "(%s): lagging req\n", pci_name(hba->pdev));
924 continue;
925 }
926
927 ccb->req = NULL;
928 if (likely(value & SS_STS_DONE)) { /* normal case */
929 ccb->srb_status = SRB_STATUS_SUCCESS;
930 ccb->scsi_status = SAM_STAT_GOOD;
931 } else {
932 ccb->srb_status = resp->srb_status;
933 ccb->scsi_status = resp->scsi_status;
934 size = resp->payload_sz * sizeof(u32);
935 if (unlikely(size < sizeof(*resp) - STATUS_VAR_LEN ||
936 size > sizeof(*resp))) {
937 printk(KERN_WARNING DRV_NAME
938 "(%s): bad status size\n",
939 pci_name(hba->pdev));
940 } else {
941 size -= sizeof(*resp) - STATUS_VAR_LEN;
942 if (size)
943 stex_copy_data(ccb, resp, size);
944 }
945 if (likely(ccb->cmd != NULL))
946 stex_check_cmd(hba, ccb, resp);
947 }
948
949 if (likely(ccb->cmd != NULL)) {
950 scsi_dma_unmap(ccb->cmd);
951 stex_scsi_done(ccb);
952 } else
953 ccb->req_type = 0;
954 }
955}
956
957static irqreturn_t stex_ss_intr(int irq, void *__hba)
958{
959 struct st_hba *hba = __hba;
960 void __iomem *base = hba->mmio_base;
961 u32 data;
962 unsigned long flags;
Ed Lin0f3f6ee2009-03-31 17:30:36 -0800963
964 spin_lock_irqsave(hba->host->host_lock, flags);
965
966 data = readl(base + YI2H_INT);
967 if (data && data != 0xffffffff) {
968 /* clear the interrupt */
969 writel(data, base + YI2H_INT_C);
970 stex_ss_mu_intr(hba);
Ed Lin9eb46d22009-09-28 22:58:33 -0800971 spin_unlock_irqrestore(hba->host->host_lock, flags);
972 if (unlikely(data & SS_I2H_REQUEST_RESET))
973 queue_work(hba->work_q, &hba->reset_work);
974 return IRQ_HANDLED;
Ed Lin0f3f6ee2009-03-31 17:30:36 -0800975 }
976
977 spin_unlock_irqrestore(hba->host->host_lock, flags);
978
Ed Lin9eb46d22009-09-28 22:58:33 -0800979 return IRQ_NONE;
Ed Lin0f3f6ee2009-03-31 17:30:36 -0800980}
981
982static int stex_common_handshake(struct st_hba *hba)
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400983{
984 void __iomem *base = hba->mmio_base;
985 struct handshake_frame *h;
986 dma_addr_t status_phys;
Ed Lin529e7a62006-12-04 17:49:34 -0800987 u32 data;
Ed Lin76fbf96f2006-12-04 17:49:42 -0800988 unsigned long before;
Jeff Garzik5a25ba12006-09-01 03:12:19 -0400989
990 if (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) {
991 writel(MU_INBOUND_DOORBELL_HANDSHAKE, base + IDBL);
992 readl(base + IDBL);
Ed Lin76fbf96f2006-12-04 17:49:42 -0800993 before = jiffies;
994 while (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) {
995 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) {
996 printk(KERN_ERR DRV_NAME
997 "(%s): no handshake signature\n",
998 pci_name(hba->pdev));
999 return -1;
1000 }
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001001 rmb();
1002 msleep(1);
1003 }
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001004 }
1005
1006 udelay(10);
1007
Ed Lin529e7a62006-12-04 17:49:34 -08001008 data = readl(base + OMR1);
1009 if ((data & 0xffff0000) == MU_HANDSHAKE_SIGNATURE_HALF) {
1010 data &= 0x0000ffff;
Ed Linf14981612009-03-31 17:30:19 -08001011 if (hba->host->can_queue > data) {
Ed Lin529e7a62006-12-04 17:49:34 -08001012 hba->host->can_queue = data;
Ed Linf14981612009-03-31 17:30:19 -08001013 hba->host->cmd_per_lun = data;
1014 }
Ed Lin529e7a62006-12-04 17:49:34 -08001015 }
1016
Ed Linf14981612009-03-31 17:30:19 -08001017 h = (struct handshake_frame *)hba->status_buffer;
1018 h->rb_phy = cpu_to_le64(hba->dma_handle);
Ed Lin591a3a52009-03-31 17:30:31 -08001019 h->req_sz = cpu_to_le16(hba->rq_size);
1020 h->req_cnt = cpu_to_le16(hba->rq_count+1);
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001021 h->status_sz = cpu_to_le16(sizeof(struct status_msg));
Ed Lin591a3a52009-03-31 17:30:31 -08001022 h->status_cnt = cpu_to_le16(hba->sts_count+1);
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001023 stex_gettime(&h->hosttime);
1024 h->partner_type = HMU_PARTNER_TYPE;
Ed Lin591a3a52009-03-31 17:30:31 -08001025 if (hba->extra_offset) {
1026 h->extra_offset = cpu_to_le32(hba->extra_offset);
Ed Lincbacfb52009-09-28 22:58:17 -08001027 h->extra_size = cpu_to_le32(hba->dma_size - hba->extra_offset);
Ed Lin94e91082006-12-04 17:49:39 -08001028 } else
1029 h->extra_offset = h->extra_size = 0;
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001030
Ed Lin591a3a52009-03-31 17:30:31 -08001031 status_phys = hba->dma_handle + (hba->rq_count+1) * hba->rq_size;
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001032 writel(status_phys, base + IMR0);
1033 readl(base + IMR0);
1034 writel((status_phys >> 16) >> 16, base + IMR1);
1035 readl(base + IMR1);
1036
1037 writel((status_phys >> 16) >> 16, base + OMR0); /* old fw compatible */
1038 readl(base + OMR0);
1039 writel(MU_INBOUND_DOORBELL_HANDSHAKE, base + IDBL);
1040 readl(base + IDBL); /* flush */
1041
1042 udelay(10);
Ed Lin76fbf96f2006-12-04 17:49:42 -08001043 before = jiffies;
1044 while (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) {
1045 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) {
1046 printk(KERN_ERR DRV_NAME
1047 "(%s): no signature after handshake frame\n",
1048 pci_name(hba->pdev));
1049 return -1;
1050 }
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001051 rmb();
1052 msleep(1);
1053 }
1054
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001055 writel(0, base + IMR0);
1056 readl(base + IMR0);
1057 writel(0, base + OMR0);
1058 readl(base + OMR0);
1059 writel(0, base + IMR1);
1060 readl(base + IMR1);
1061 writel(0, base + OMR1);
1062 readl(base + OMR1); /* flush */
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001063 return 0;
1064}
1065
Ed Lin0f3f6ee2009-03-31 17:30:36 -08001066static int stex_ss_handshake(struct st_hba *hba)
1067{
1068 void __iomem *base = hba->mmio_base;
1069 struct st_msg_header *msg_h;
1070 struct handshake_frame *h;
Ed Lin69cb4872009-08-18 12:15:14 -07001071 __le32 *scratch;
Ed Lin9eb46d22009-09-28 22:58:33 -08001072 u32 data, scratch_size;
Ed Lin0f3f6ee2009-03-31 17:30:36 -08001073 unsigned long before;
1074 int ret = 0;
1075
Ed Lin69cb4872009-08-18 12:15:14 -07001076 before = jiffies;
1077 while ((readl(base + YIOA_STATUS) & SS_MU_OPERATIONAL) == 0) {
1078 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) {
1079 printk(KERN_ERR DRV_NAME
1080 "(%s): firmware not operational\n",
1081 pci_name(hba->pdev));
1082 return -1;
1083 }
1084 msleep(1);
1085 }
1086
1087 msg_h = (struct st_msg_header *)hba->dma_mem;
Ed Lin0f3f6ee2009-03-31 17:30:36 -08001088 msg_h->handle = cpu_to_le64(hba->dma_handle);
1089 msg_h->flag = SS_HEAD_HANDSHAKE;
1090
Ed Lin69cb4872009-08-18 12:15:14 -07001091 h = (struct handshake_frame *)(msg_h + 1);
Ed Lin0f3f6ee2009-03-31 17:30:36 -08001092 h->rb_phy = cpu_to_le64(hba->dma_handle);
1093 h->req_sz = cpu_to_le16(hba->rq_size);
1094 h->req_cnt = cpu_to_le16(hba->rq_count+1);
1095 h->status_sz = cpu_to_le16(sizeof(struct status_msg));
1096 h->status_cnt = cpu_to_le16(hba->sts_count+1);
1097 stex_gettime(&h->hosttime);
1098 h->partner_type = HMU_PARTNER_TYPE;
1099 h->extra_offset = h->extra_size = 0;
Ed Lin9eb46d22009-09-28 22:58:33 -08001100 scratch_size = (hba->sts_count+1)*sizeof(u32);
1101 h->scratch_size = cpu_to_le32(scratch_size);
Ed Lin0f3f6ee2009-03-31 17:30:36 -08001102
1103 data = readl(base + YINT_EN);
1104 data &= ~4;
1105 writel(data, base + YINT_EN);
1106 writel((hba->dma_handle >> 16) >> 16, base + YH2I_REQ_HI);
Ed Lin9eb46d22009-09-28 22:58:33 -08001107 readl(base + YH2I_REQ_HI);
Ed Lin0f3f6ee2009-03-31 17:30:36 -08001108 writel(hba->dma_handle, base + YH2I_REQ);
Ed Lin9eb46d22009-09-28 22:58:33 -08001109 readl(base + YH2I_REQ); /* flush */
Ed Lin0f3f6ee2009-03-31 17:30:36 -08001110
1111 scratch = hba->scratch;
1112 before = jiffies;
1113 while (!(le32_to_cpu(*scratch) & SS_STS_HANDSHAKE)) {
1114 if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) {
1115 printk(KERN_ERR DRV_NAME
1116 "(%s): no signature after handshake frame\n",
1117 pci_name(hba->pdev));
1118 ret = -1;
1119 break;
1120 }
1121 rmb();
1122 msleep(1);
1123 }
1124
Ed Lin9eb46d22009-09-28 22:58:33 -08001125 memset(scratch, 0, scratch_size);
Ed Lin0f3f6ee2009-03-31 17:30:36 -08001126 msg_h->flag = 0;
1127 return ret;
1128}
1129
1130static int stex_handshake(struct st_hba *hba)
1131{
1132 int err;
1133 unsigned long flags;
Ed Lin9eb46d22009-09-28 22:58:33 -08001134 unsigned int mu_status;
Ed Lin0f3f6ee2009-03-31 17:30:36 -08001135
1136 err = (hba->cardtype == st_yel) ?
1137 stex_ss_handshake(hba) : stex_common_handshake(hba);
Ed Lin9eb46d22009-09-28 22:58:33 -08001138 spin_lock_irqsave(hba->host->host_lock, flags);
1139 mu_status = hba->mu_status;
Ed Lin0f3f6ee2009-03-31 17:30:36 -08001140 if (err == 0) {
Ed Lin0f3f6ee2009-03-31 17:30:36 -08001141 hba->req_head = 0;
1142 hba->req_tail = 0;
1143 hba->status_head = 0;
1144 hba->status_tail = 0;
1145 hba->out_req_cnt = 0;
1146 hba->mu_status = MU_STATE_STARTED;
Ed Lin9eb46d22009-09-28 22:58:33 -08001147 } else
1148 hba->mu_status = MU_STATE_FAILED;
1149 if (mu_status == MU_STATE_RESETTING)
1150 wake_up_all(&hba->reset_waitq);
1151 spin_unlock_irqrestore(hba->host->host_lock, flags);
Ed Lin0f3f6ee2009-03-31 17:30:36 -08001152 return err;
1153}
1154
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001155static int stex_abort(struct scsi_cmnd *cmd)
1156{
1157 struct Scsi_Host *host = cmd->device->host;
1158 struct st_hba *hba = (struct st_hba *)host->hostdata;
Ed Lincf355882006-09-01 14:31:51 +08001159 u16 tag = cmd->request->tag;
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001160 void __iomem *base;
1161 u32 data;
1162 int result = SUCCESS;
1163 unsigned long flags;
Ed Linc25da0a2007-05-09 20:50:42 -08001164
1165 printk(KERN_INFO DRV_NAME
1166 "(%s): aborting command\n", pci_name(hba->pdev));
1167 scsi_print_command(cmd);
1168
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001169 base = hba->mmio_base;
1170 spin_lock_irqsave(host->host_lock, flags);
Ed Lin9eb46d22009-09-28 22:58:33 -08001171 if (tag < host->can_queue &&
1172 hba->ccb[tag].req && hba->ccb[tag].cmd == cmd)
Ed Lincf355882006-09-01 14:31:51 +08001173 hba->wait_ccb = &hba->ccb[tag];
Ed Lin9eb46d22009-09-28 22:58:33 -08001174 else
1175 goto out;
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001176
Ed Lin0f3f6ee2009-03-31 17:30:36 -08001177 if (hba->cardtype == st_yel) {
1178 data = readl(base + YI2H_INT);
1179 if (data == 0 || data == 0xffffffff)
1180 goto fail_out;
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001181
Ed Lin0f3f6ee2009-03-31 17:30:36 -08001182 writel(data, base + YI2H_INT_C);
1183 stex_ss_mu_intr(hba);
1184 } else {
1185 data = readl(base + ODBL);
1186 if (data == 0 || data == 0xffffffff)
1187 goto fail_out;
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001188
Ed Lin0f3f6ee2009-03-31 17:30:36 -08001189 writel(data, base + ODBL);
1190 readl(base + ODBL); /* flush */
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001191
Ed Lin0f3f6ee2009-03-31 17:30:36 -08001192 stex_mu_intr(hba, data);
1193 }
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001194 if (hba->wait_ccb == NULL) {
1195 printk(KERN_WARNING DRV_NAME
1196 "(%s): lost interrupt\n", pci_name(hba->pdev));
1197 goto out;
1198 }
1199
1200fail_out:
FUJITA Tomonorid5587d52007-05-26 10:01:24 +09001201 scsi_dma_unmap(cmd);
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001202 hba->wait_ccb->req = NULL; /* nullify the req's future return */
1203 hba->wait_ccb = NULL;
1204 result = FAILED;
1205out:
1206 spin_unlock_irqrestore(host->host_lock, flags);
1207 return result;
1208}
1209
1210static void stex_hard_reset(struct st_hba *hba)
1211{
1212 struct pci_bus *bus;
1213 int i;
1214 u16 pci_cmd;
1215 u8 pci_bctl;
1216
1217 for (i = 0; i < 16; i++)
1218 pci_read_config_dword(hba->pdev, i * 4,
1219 &hba->pdev->saved_config_space[i]);
1220
1221 /* Reset secondary bus. Our controller(MU/ATU) is the only device on
1222 secondary bus. Consult Intel 80331/3 developer's manual for detail */
1223 bus = hba->pdev->bus;
1224 pci_read_config_byte(bus->self, PCI_BRIDGE_CONTROL, &pci_bctl);
1225 pci_bctl |= PCI_BRIDGE_CTL_BUS_RESET;
1226 pci_write_config_byte(bus->self, PCI_BRIDGE_CONTROL, pci_bctl);
Ed Lin69f4a512007-05-09 20:50:37 -08001227
1228 /*
1229 * 1 ms may be enough for 8-port controllers. But 16-port controllers
1230 * require more time to finish bus reset. Use 100 ms here for safety
1231 */
1232 msleep(100);
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001233 pci_bctl &= ~PCI_BRIDGE_CTL_BUS_RESET;
1234 pci_write_config_byte(bus->self, PCI_BRIDGE_CONTROL, pci_bctl);
1235
Ed Lin76fbf96f2006-12-04 17:49:42 -08001236 for (i = 0; i < MU_HARD_RESET_WAIT; i++) {
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001237 pci_read_config_word(hba->pdev, PCI_COMMAND, &pci_cmd);
Ed Lin47c4f992006-12-04 17:49:31 -08001238 if (pci_cmd != 0xffff && (pci_cmd & PCI_COMMAND_MASTER))
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001239 break;
1240 msleep(1);
1241 }
1242
1243 ssleep(5);
1244 for (i = 0; i < 16; i++)
1245 pci_write_config_dword(hba->pdev, i * 4,
1246 hba->pdev->saved_config_space[i]);
1247}
1248
Ed Lin9eb46d22009-09-28 22:58:33 -08001249static int stex_yos_reset(struct st_hba *hba)
1250{
1251 void __iomem *base;
1252 unsigned long flags, before;
1253 int ret = 0;
1254
1255 base = hba->mmio_base;
1256 writel(MU_INBOUND_DOORBELL_RESET, base + IDBL);
1257 readl(base + IDBL); /* flush */
1258 before = jiffies;
1259 while (hba->out_req_cnt > 0) {
1260 if (time_after(jiffies, before + ST_INTERNAL_TIMEOUT * HZ)) {
1261 printk(KERN_WARNING DRV_NAME
1262 "(%s): reset timeout\n", pci_name(hba->pdev));
1263 ret = -1;
1264 break;
1265 }
1266 msleep(1);
1267 }
1268
1269 spin_lock_irqsave(hba->host->host_lock, flags);
1270 if (ret == -1)
1271 hba->mu_status = MU_STATE_FAILED;
1272 else
1273 hba->mu_status = MU_STATE_STARTED;
1274 wake_up_all(&hba->reset_waitq);
1275 spin_unlock_irqrestore(hba->host->host_lock, flags);
1276
1277 return ret;
1278}
1279
Ed Lin69cb4872009-08-18 12:15:14 -07001280static void stex_ss_reset(struct st_hba *hba)
1281{
1282 writel(SS_H2I_INT_RESET, hba->mmio_base + YH2I_INT);
1283 readl(hba->mmio_base + YH2I_INT);
1284 ssleep(5);
1285}
1286
Ed Lin9eb46d22009-09-28 22:58:33 -08001287static int stex_do_reset(struct st_hba *hba)
1288{
1289 struct st_ccb *ccb;
1290 unsigned long flags;
1291 unsigned int mu_status = MU_STATE_RESETTING;
1292 u16 tag;
1293
1294 spin_lock_irqsave(hba->host->host_lock, flags);
1295 if (hba->mu_status == MU_STATE_STARTING) {
1296 spin_unlock_irqrestore(hba->host->host_lock, flags);
1297 printk(KERN_INFO DRV_NAME "(%s): request reset during init\n",
1298 pci_name(hba->pdev));
1299 return 0;
1300 }
1301 while (hba->mu_status == MU_STATE_RESETTING) {
1302 spin_unlock_irqrestore(hba->host->host_lock, flags);
1303 wait_event_timeout(hba->reset_waitq,
1304 hba->mu_status != MU_STATE_RESETTING,
1305 MU_MAX_DELAY * HZ);
1306 spin_lock_irqsave(hba->host->host_lock, flags);
1307 mu_status = hba->mu_status;
1308 }
1309
1310 if (mu_status != MU_STATE_RESETTING) {
1311 spin_unlock_irqrestore(hba->host->host_lock, flags);
1312 return (mu_status == MU_STATE_STARTED) ? 0 : -1;
1313 }
1314
1315 hba->mu_status = MU_STATE_RESETTING;
1316 spin_unlock_irqrestore(hba->host->host_lock, flags);
1317
1318 if (hba->cardtype == st_yosemite)
1319 return stex_yos_reset(hba);
1320
1321 if (hba->cardtype == st_shasta)
1322 stex_hard_reset(hba);
1323 else if (hba->cardtype == st_yel)
1324 stex_ss_reset(hba);
1325
1326 spin_lock_irqsave(hba->host->host_lock, flags);
1327 for (tag = 0; tag < hba->host->can_queue; tag++) {
1328 ccb = &hba->ccb[tag];
1329 if (ccb->req == NULL)
1330 continue;
1331 ccb->req = NULL;
1332 if (ccb->cmd) {
1333 scsi_dma_unmap(ccb->cmd);
1334 ccb->cmd->result = DID_RESET << 16;
1335 ccb->cmd->scsi_done(ccb->cmd);
1336 ccb->cmd = NULL;
1337 }
1338 }
1339 spin_unlock_irqrestore(hba->host->host_lock, flags);
1340
1341 if (stex_handshake(hba) == 0)
1342 return 0;
1343
1344 printk(KERN_WARNING DRV_NAME "(%s): resetting: handshake failed\n",
1345 pci_name(hba->pdev));
1346 return -1;
1347}
1348
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001349static int stex_reset(struct scsi_cmnd *cmd)
1350{
1351 struct st_hba *hba;
Ed Lin - PTU7cfe99a2009-01-26 02:41:53 -08001352
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001353 hba = (struct st_hba *) &cmd->device->host->hostdata[0];
1354
Ed Linc25da0a2007-05-09 20:50:42 -08001355 printk(KERN_INFO DRV_NAME
1356 "(%s): resetting host\n", pci_name(hba->pdev));
1357 scsi_print_command(cmd);
1358
Ed Lin9eb46d22009-09-28 22:58:33 -08001359 return stex_do_reset(hba) ? FAILED : SUCCESS;
1360}
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001361
Ed Lin9eb46d22009-09-28 22:58:33 -08001362static void stex_reset_work(struct work_struct *work)
1363{
1364 struct st_hba *hba = container_of(work, struct st_hba, reset_work);
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001365
Ed Lin9eb46d22009-09-28 22:58:33 -08001366 stex_do_reset(hba);
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001367}
1368
1369static int stex_biosparam(struct scsi_device *sdev,
1370 struct block_device *bdev, sector_t capacity, int geom[])
1371{
Ed Linb4b8bed2006-12-04 17:49:24 -08001372 int heads = 255, sectors = 63;
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001373
1374 if (capacity < 0x200000) {
1375 heads = 64;
1376 sectors = 32;
1377 }
1378
Ed Linb4b8bed2006-12-04 17:49:24 -08001379 sector_div(capacity, heads * sectors);
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001380
1381 geom[0] = heads;
1382 geom[1] = sectors;
Ed Linb4b8bed2006-12-04 17:49:24 -08001383 geom[2] = capacity;
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001384
1385 return 0;
1386}
1387
1388static struct scsi_host_template driver_template = {
1389 .module = THIS_MODULE,
1390 .name = DRV_NAME,
1391 .proc_name = DRV_NAME,
1392 .bios_param = stex_biosparam,
1393 .queuecommand = stex_queuecommand,
Ed Lincf355882006-09-01 14:31:51 +08001394 .slave_alloc = stex_slave_alloc,
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001395 .slave_configure = stex_slave_config,
1396 .slave_destroy = stex_slave_destroy,
1397 .eh_abort_handler = stex_abort,
1398 .eh_host_reset_handler = stex_reset,
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001399 .this_id = -1,
Ed Lin591a3a52009-03-31 17:30:31 -08001400};
1401
1402static struct pci_device_id stex_pci_tbl[] = {
1403 /* st_shasta */
1404 { 0x105a, 0x8350, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1405 st_shasta }, /* SuperTrak EX8350/8300/16350/16300 */
1406 { 0x105a, 0xc350, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1407 st_shasta }, /* SuperTrak EX12350 */
1408 { 0x105a, 0x4302, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1409 st_shasta }, /* SuperTrak EX4350 */
1410 { 0x105a, 0xe350, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1411 st_shasta }, /* SuperTrak EX24350 */
1412
1413 /* st_vsc */
1414 { 0x105a, 0x7250, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_vsc },
1415
1416 /* st_yosemite */
Ed Lin0f3f6ee2009-03-31 17:30:36 -08001417 { 0x105a, 0x8650, 0x105a, PCI_ANY_ID, 0, 0, st_yosemite },
Ed Lin591a3a52009-03-31 17:30:31 -08001418
1419 /* st_seq */
1420 { 0x105a, 0x3360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_seq },
Ed Lin0f3f6ee2009-03-31 17:30:36 -08001421
1422 /* st_yel */
1423 { 0x105a, 0x8650, 0x1033, PCI_ANY_ID, 0, 0, st_yel },
1424 { 0x105a, 0x8760, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_yel },
Ed Lin591a3a52009-03-31 17:30:31 -08001425 { } /* terminate list */
1426};
1427
1428static struct st_card_info stex_card_info[] = {
1429 /* st_shasta */
1430 {
1431 .max_id = 17,
1432 .max_lun = 8,
1433 .max_channel = 0,
1434 .rq_count = 32,
1435 .rq_size = 1048,
1436 .sts_count = 32,
Ed Lin0f3f6ee2009-03-31 17:30:36 -08001437 .alloc_rq = stex_alloc_req,
1438 .map_sg = stex_map_sg,
1439 .send = stex_send_cmd,
Ed Lin591a3a52009-03-31 17:30:31 -08001440 },
1441
1442 /* st_vsc */
1443 {
1444 .max_id = 129,
1445 .max_lun = 1,
1446 .max_channel = 0,
1447 .rq_count = 32,
1448 .rq_size = 1048,
1449 .sts_count = 32,
Ed Lin0f3f6ee2009-03-31 17:30:36 -08001450 .alloc_rq = stex_alloc_req,
1451 .map_sg = stex_map_sg,
1452 .send = stex_send_cmd,
Ed Lin591a3a52009-03-31 17:30:31 -08001453 },
1454
1455 /* st_yosemite */
1456 {
1457 .max_id = 2,
1458 .max_lun = 256,
1459 .max_channel = 0,
1460 .rq_count = 256,
1461 .rq_size = 1048,
1462 .sts_count = 256,
Ed Lin0f3f6ee2009-03-31 17:30:36 -08001463 .alloc_rq = stex_alloc_req,
1464 .map_sg = stex_map_sg,
1465 .send = stex_send_cmd,
Ed Lin591a3a52009-03-31 17:30:31 -08001466 },
1467
1468 /* st_seq */
1469 {
1470 .max_id = 129,
1471 .max_lun = 1,
1472 .max_channel = 0,
1473 .rq_count = 32,
1474 .rq_size = 1048,
1475 .sts_count = 32,
Ed Lin0f3f6ee2009-03-31 17:30:36 -08001476 .alloc_rq = stex_alloc_req,
1477 .map_sg = stex_map_sg,
1478 .send = stex_send_cmd,
1479 },
1480
1481 /* st_yel */
1482 {
1483 .max_id = 129,
1484 .max_lun = 256,
1485 .max_channel = 3,
1486 .rq_count = 801,
1487 .rq_size = 512,
1488 .sts_count = 801,
1489 .alloc_rq = stex_ss_alloc_req,
1490 .map_sg = stex_ss_map_sg,
1491 .send = stex_ss_send_cmd,
Ed Lin591a3a52009-03-31 17:30:31 -08001492 },
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001493};
1494
1495static int stex_set_dma_mask(struct pci_dev * pdev)
1496{
1497 int ret;
Ed Lin - PTU7cfe99a2009-01-26 02:41:53 -08001498
Ed Lincce9c8a2009-09-28 22:58:36 -08001499 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))
1500 && !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001501 return 0;
Yang Hongyang284901a2009-04-06 19:01:15 -07001502 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001503 if (!ret)
Yang Hongyang284901a2009-04-06 19:01:15 -07001504 ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001505 return ret;
1506}
1507
Ed Lin99946f82009-03-31 17:30:25 -08001508static int stex_request_irq(struct st_hba *hba)
1509{
1510 struct pci_dev *pdev = hba->pdev;
1511 int status;
1512
1513 if (msi) {
1514 status = pci_enable_msi(pdev);
1515 if (status != 0)
1516 printk(KERN_ERR DRV_NAME
1517 "(%s): error %d setting up MSI\n",
1518 pci_name(pdev), status);
1519 else
1520 hba->msi_enabled = 1;
1521 } else
1522 hba->msi_enabled = 0;
1523
Ed Lin0f3f6ee2009-03-31 17:30:36 -08001524 status = request_irq(pdev->irq, hba->cardtype == st_yel ?
1525 stex_ss_intr : stex_intr, IRQF_SHARED, DRV_NAME, hba);
Ed Lin99946f82009-03-31 17:30:25 -08001526
1527 if (status != 0) {
1528 if (hba->msi_enabled)
1529 pci_disable_msi(pdev);
1530 }
1531 return status;
1532}
1533
1534static void stex_free_irq(struct st_hba *hba)
1535{
1536 struct pci_dev *pdev = hba->pdev;
1537
1538 free_irq(pdev->irq, hba);
1539 if (hba->msi_enabled)
1540 pci_disable_msi(pdev);
1541}
1542
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08001543static int stex_probe(struct pci_dev *pdev, const struct pci_device_id *id)
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001544{
1545 struct st_hba *hba;
1546 struct Scsi_Host *host;
Ed Lin591a3a52009-03-31 17:30:31 -08001547 const struct st_card_info *ci = NULL;
Ed Lin0f3f6ee2009-03-31 17:30:36 -08001548 u32 sts_offset, cp_offset, scratch_offset;
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001549 int err;
1550
1551 err = pci_enable_device(pdev);
1552 if (err)
1553 return err;
1554
1555 pci_set_master(pdev);
1556
1557 host = scsi_host_alloc(&driver_template, sizeof(struct st_hba));
1558
1559 if (!host) {
1560 printk(KERN_ERR DRV_NAME "(%s): scsi_host_alloc failed\n",
1561 pci_name(pdev));
1562 err = -ENOMEM;
1563 goto out_disable;
1564 }
1565
1566 hba = (struct st_hba *)host->hostdata;
1567 memset(hba, 0, sizeof(struct st_hba));
1568
1569 err = pci_request_regions(pdev, DRV_NAME);
1570 if (err < 0) {
1571 printk(KERN_ERR DRV_NAME "(%s): request regions failed\n",
1572 pci_name(pdev));
1573 goto out_scsi_host_put;
1574 }
1575
Arjan van de Ven25729a72008-09-28 16:18:02 -07001576 hba->mmio_base = pci_ioremap_bar(pdev, 0);
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001577 if ( !hba->mmio_base) {
1578 printk(KERN_ERR DRV_NAME "(%s): memory map failed\n",
1579 pci_name(pdev));
1580 err = -ENOMEM;
1581 goto out_release_regions;
1582 }
1583
1584 err = stex_set_dma_mask(pdev);
1585 if (err) {
1586 printk(KERN_ERR DRV_NAME "(%s): set dma mask failed\n",
1587 pci_name(pdev));
1588 goto out_iounmap;
1589 }
1590
Ed Lin94e91082006-12-04 17:49:39 -08001591 hba->cardtype = (unsigned int) id->driver_data;
Ed Lin591a3a52009-03-31 17:30:31 -08001592 ci = &stex_card_info[hba->cardtype];
Ed Lin0f3f6ee2009-03-31 17:30:36 -08001593 sts_offset = scratch_offset = (ci->rq_count+1) * ci->rq_size;
1594 if (hba->cardtype == st_yel)
1595 sts_offset += (ci->sts_count+1) * sizeof(u32);
Ed Lin591a3a52009-03-31 17:30:31 -08001596 cp_offset = sts_offset + (ci->sts_count+1) * sizeof(struct status_msg);
1597 hba->dma_size = cp_offset + sizeof(struct st_frame);
1598 if (hba->cardtype == st_seq ||
1599 (hba->cardtype == st_vsc && (pdev->subsystem_device & 1))) {
1600 hba->extra_offset = hba->dma_size;
1601 hba->dma_size += ST_ADDITIONAL_MEM;
1602 }
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001603 hba->dma_mem = dma_alloc_coherent(&pdev->dev,
Ed Lin94e91082006-12-04 17:49:39 -08001604 hba->dma_size, &hba->dma_handle, GFP_KERNEL);
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001605 if (!hba->dma_mem) {
Ed Lincbacfb52009-09-28 22:58:17 -08001606 /* Retry minimum coherent mapping for st_seq and st_vsc */
1607 if (hba->cardtype == st_seq ||
1608 (hba->cardtype == st_vsc && (pdev->subsystem_device & 1))) {
1609 printk(KERN_WARNING DRV_NAME
1610 "(%s): allocating min buffer for controller\n",
1611 pci_name(pdev));
1612 hba->dma_size = hba->extra_offset
1613 + ST_ADDITIONAL_MEM_MIN;
1614 hba->dma_mem = dma_alloc_coherent(&pdev->dev,
1615 hba->dma_size, &hba->dma_handle, GFP_KERNEL);
1616 }
1617
1618 if (!hba->dma_mem) {
1619 err = -ENOMEM;
1620 printk(KERN_ERR DRV_NAME "(%s): dma mem alloc failed\n",
1621 pci_name(pdev));
1622 goto out_iounmap;
1623 }
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001624 }
1625
Ed Lin591a3a52009-03-31 17:30:31 -08001626 hba->ccb = kcalloc(ci->rq_count, sizeof(struct st_ccb), GFP_KERNEL);
1627 if (!hba->ccb) {
1628 err = -ENOMEM;
1629 printk(KERN_ERR DRV_NAME "(%s): ccb alloc failed\n",
1630 pci_name(pdev));
1631 goto out_pci_free;
1632 }
1633
Ed Lin0f3f6ee2009-03-31 17:30:36 -08001634 if (hba->cardtype == st_yel)
1635 hba->scratch = (__le32 *)(hba->dma_mem + scratch_offset);
Ed Lin591a3a52009-03-31 17:30:31 -08001636 hba->status_buffer = (struct status_msg *)(hba->dma_mem + sts_offset);
1637 hba->copy_buffer = hba->dma_mem + cp_offset;
1638 hba->rq_count = ci->rq_count;
1639 hba->rq_size = ci->rq_size;
1640 hba->sts_count = ci->sts_count;
Ed Lin0f3f6ee2009-03-31 17:30:36 -08001641 hba->alloc_rq = ci->alloc_rq;
1642 hba->map_sg = ci->map_sg;
1643 hba->send = ci->send;
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001644 hba->mu_status = MU_STATE_STARTING;
1645
Ed Lin0f3f6ee2009-03-31 17:30:36 -08001646 if (hba->cardtype == st_yel)
1647 host->sg_tablesize = 38;
1648 else
1649 host->sg_tablesize = 32;
Ed Lin591a3a52009-03-31 17:30:31 -08001650 host->can_queue = ci->rq_count;
1651 host->cmd_per_lun = ci->rq_count;
1652 host->max_id = ci->max_id;
1653 host->max_lun = ci->max_lun;
1654 host->max_channel = ci->max_channel;
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001655 host->unique_id = host->host_no;
1656 host->max_cmd_len = STEX_CDB_LENGTH;
1657
1658 hba->host = host;
1659 hba->pdev = pdev;
Ed Lin9eb46d22009-09-28 22:58:33 -08001660 init_waitqueue_head(&hba->reset_waitq);
1661
1662 snprintf(hba->work_q_name, sizeof(hba->work_q_name),
1663 "stex_wq_%d", host->host_no);
1664 hba->work_q = create_singlethread_workqueue(hba->work_q_name);
1665 if (!hba->work_q) {
1666 printk(KERN_ERR DRV_NAME "(%s): create workqueue failed\n",
1667 pci_name(pdev));
1668 err = -ENOMEM;
1669 goto out_ccb_free;
1670 }
1671 INIT_WORK(&hba->reset_work, stex_reset_work);
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001672
Ed Lin99946f82009-03-31 17:30:25 -08001673 err = stex_request_irq(hba);
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001674 if (err) {
1675 printk(KERN_ERR DRV_NAME "(%s): request irq failed\n",
1676 pci_name(pdev));
Ed Lin9eb46d22009-09-28 22:58:33 -08001677 goto out_free_wq;
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001678 }
1679
1680 err = stex_handshake(hba);
1681 if (err)
1682 goto out_free_irq;
1683
Ed Lin529e7a62006-12-04 17:49:34 -08001684 err = scsi_init_shared_tag_map(host, host->can_queue);
James Bottomleydeb81d82006-09-01 09:28:48 -04001685 if (err) {
Ed Lincf355882006-09-01 14:31:51 +08001686 printk(KERN_ERR DRV_NAME "(%s): init shared queue failed\n",
1687 pci_name(pdev));
1688 goto out_free_irq;
1689 }
1690
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001691 pci_set_drvdata(pdev, hba);
1692
1693 err = scsi_add_host(host, &pdev->dev);
1694 if (err) {
1695 printk(KERN_ERR DRV_NAME "(%s): scsi_add_host failed\n",
1696 pci_name(pdev));
1697 goto out_free_irq;
1698 }
1699
1700 scsi_scan_host(host);
1701
1702 return 0;
1703
1704out_free_irq:
Ed Lin99946f82009-03-31 17:30:25 -08001705 stex_free_irq(hba);
Ed Lin9eb46d22009-09-28 22:58:33 -08001706out_free_wq:
1707 destroy_workqueue(hba->work_q);
Ed Lin591a3a52009-03-31 17:30:31 -08001708out_ccb_free:
1709 kfree(hba->ccb);
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001710out_pci_free:
Ed Lin94e91082006-12-04 17:49:39 -08001711 dma_free_coherent(&pdev->dev, hba->dma_size,
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001712 hba->dma_mem, hba->dma_handle);
1713out_iounmap:
1714 iounmap(hba->mmio_base);
1715out_release_regions:
1716 pci_release_regions(pdev);
1717out_scsi_host_put:
1718 scsi_host_put(host);
1719out_disable:
1720 pci_disable_device(pdev);
1721
1722 return err;
1723}
1724
1725static void stex_hba_stop(struct st_hba *hba)
1726{
1727 struct req_msg *req;
Ed Lin0f3f6ee2009-03-31 17:30:36 -08001728 struct st_msg_header *msg_h;
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001729 unsigned long flags;
1730 unsigned long before;
Ed Lincf355882006-09-01 14:31:51 +08001731 u16 tag = 0;
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001732
1733 spin_lock_irqsave(hba->host->host_lock, flags);
Ed Lin0f3f6ee2009-03-31 17:30:36 -08001734 req = hba->alloc_rq(hba);
1735 if (hba->cardtype == st_yel) {
1736 msg_h = (struct st_msg_header *)req - 1;
1737 memset(msg_h, 0, hba->rq_size);
1738 } else
1739 memset(req, 0, hba->rq_size);
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001740
Ed Lin0f3f6ee2009-03-31 17:30:36 -08001741 if (hba->cardtype == st_yosemite || hba->cardtype == st_yel) {
Ed Linfb4f66b2006-09-27 19:23:41 +08001742 req->cdb[0] = MGT_CMD;
1743 req->cdb[1] = MGT_CMD_SIGNATURE;
1744 req->cdb[2] = CTLR_CONFIG_CMD;
1745 req->cdb[3] = CTLR_SHUTDOWN;
1746 } else {
1747 req->cdb[0] = CONTROLLER_CMD;
1748 req->cdb[1] = CTLR_POWER_STATE_CHANGE;
1749 req->cdb[2] = CTLR_POWER_SAVING;
1750 }
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001751
1752 hba->ccb[tag].cmd = NULL;
1753 hba->ccb[tag].sg_count = 0;
1754 hba->ccb[tag].sense_bufflen = 0;
1755 hba->ccb[tag].sense_buffer = NULL;
Ed Linf14981612009-03-31 17:30:19 -08001756 hba->ccb[tag].req_type = PASSTHRU_REQ_TYPE;
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001757
Ed Lin0f3f6ee2009-03-31 17:30:36 -08001758 hba->send(hba, req, tag);
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001759 spin_unlock_irqrestore(hba->host->host_lock, flags);
1760
Ed Lincf355882006-09-01 14:31:51 +08001761 before = jiffies;
1762 while (hba->ccb[tag].req_type & PASSTHRU_REQ_TYPE) {
Ed Linf14981612009-03-31 17:30:19 -08001763 if (time_after(jiffies, before + ST_INTERNAL_TIMEOUT * HZ)) {
1764 hba->ccb[tag].req_type = 0;
Ed Lincf355882006-09-01 14:31:51 +08001765 return;
Ed Linf14981612009-03-31 17:30:19 -08001766 }
1767 msleep(1);
Ed Lincf355882006-09-01 14:31:51 +08001768 }
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001769}
1770
1771static void stex_hba_free(struct st_hba *hba)
1772{
Ed Lin99946f82009-03-31 17:30:25 -08001773 stex_free_irq(hba);
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001774
Ed Lin9eb46d22009-09-28 22:58:33 -08001775 destroy_workqueue(hba->work_q);
1776
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001777 iounmap(hba->mmio_base);
1778
1779 pci_release_regions(hba->pdev);
1780
Ed Lin591a3a52009-03-31 17:30:31 -08001781 kfree(hba->ccb);
1782
Ed Lin94e91082006-12-04 17:49:39 -08001783 dma_free_coherent(&hba->pdev->dev, hba->dma_size,
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001784 hba->dma_mem, hba->dma_handle);
1785}
1786
1787static void stex_remove(struct pci_dev *pdev)
1788{
1789 struct st_hba *hba = pci_get_drvdata(pdev);
1790
1791 scsi_remove_host(hba->host);
1792
1793 pci_set_drvdata(pdev, NULL);
1794
1795 stex_hba_stop(hba);
1796
1797 stex_hba_free(hba);
1798
1799 scsi_host_put(hba->host);
1800
1801 pci_disable_device(pdev);
1802}
1803
1804static void stex_shutdown(struct pci_dev *pdev)
1805{
1806 struct st_hba *hba = pci_get_drvdata(pdev);
1807
1808 stex_hba_stop(hba);
1809}
1810
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001811MODULE_DEVICE_TABLE(pci, stex_pci_tbl);
1812
1813static struct pci_driver stex_pci_driver = {
1814 .name = DRV_NAME,
1815 .id_table = stex_pci_tbl,
1816 .probe = stex_probe,
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08001817 .remove = stex_remove,
Jeff Garzik5a25ba12006-09-01 03:12:19 -04001818 .shutdown = stex_shutdown,
1819};
1820
1821static int __init stex_init(void)
1822{
1823 printk(KERN_INFO DRV_NAME
1824 ": Promise SuperTrak EX Driver version: %s\n",
1825 ST_DRIVER_VERSION);
1826
1827 return pci_register_driver(&stex_pci_driver);
1828}
1829
1830static void __exit stex_exit(void)
1831{
1832 pci_unregister_driver(&stex_pci_driver);
1833}
1834
1835module_init(stex_init);
1836module_exit(stex_exit);