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1da177e4 LT |
1 | /* |
2 | * Device driver for the SYMBIOS/LSILOGIC 53C8XX and 53C1010 family | |
3 | * of PCI-SCSI IO processors. | |
4 | * | |
5 | * Copyright (C) 1999-2001 Gerard Roudier <groudier@free.fr> | |
6 | * Copyright (c) 2003-2005 Matthew Wilcox <matthew@wil.cx> | |
7 | * | |
8 | * This driver is derived from the Linux sym53c8xx driver. | |
9 | * Copyright (C) 1998-2000 Gerard Roudier | |
10 | * | |
11 | * The sym53c8xx driver is derived from the ncr53c8xx driver that had been | |
12 | * a port of the FreeBSD ncr driver to Linux-1.2.13. | |
13 | * | |
14 | * The original ncr driver has been written for 386bsd and FreeBSD by | |
15 | * Wolfgang Stanglmeier <wolf@cologne.de> | |
16 | * Stefan Esser <se@mi.Uni-Koeln.de> | |
17 | * Copyright (C) 1994 Wolfgang Stanglmeier | |
18 | * | |
19 | * Other major contributions: | |
20 | * | |
21 | * NVRAM detection and reading. | |
22 | * Copyright (C) 1997 Richard Waltham <dormouse@farsrobt.demon.co.uk> | |
23 | * | |
24 | *----------------------------------------------------------------------------- | |
25 | * | |
26 | * This program is free software; you can redistribute it and/or modify | |
27 | * it under the terms of the GNU General Public License as published by | |
28 | * the Free Software Foundation; either version 2 of the License, or | |
29 | * (at your option) any later version. | |
30 | * | |
31 | * This program is distributed in the hope that it will be useful, | |
32 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
33 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
34 | * GNU General Public License for more details. | |
35 | * | |
36 | * You should have received a copy of the GNU General Public License | |
37 | * along with this program; if not, write to the Free Software | |
38 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
39 | */ | |
40 | #include <linux/ctype.h> | |
41 | #include <linux/init.h> | |
42 | #include <linux/interrupt.h> | |
43 | #include <linux/module.h> | |
44 | #include <linux/moduleparam.h> | |
45 | #include <linux/spinlock.h> | |
46 | #include <scsi/scsi.h> | |
47 | #include <scsi/scsi_tcq.h> | |
48 | #include <scsi/scsi_device.h> | |
49 | #include <scsi/scsi_transport.h> | |
50 | ||
51 | #include "sym_glue.h" | |
52 | #include "sym_nvram.h" | |
53 | ||
54 | #define NAME53C "sym53c" | |
55 | #define NAME53C8XX "sym53c8xx" | |
56 | ||
1da177e4 LT |
57 | #define IRQ_FMT "%d" |
58 | #define IRQ_PRM(x) (x) | |
1da177e4 LT |
59 | |
60 | struct sym_driver_setup sym_driver_setup = SYM_LINUX_DRIVER_SETUP; | |
61 | unsigned int sym_debug_flags = 0; | |
62 | ||
63 | static char *excl_string; | |
64 | static char *safe_string; | |
65 | module_param_named(cmd_per_lun, sym_driver_setup.max_tag, ushort, 0); | |
66 | module_param_string(tag_ctrl, sym_driver_setup.tag_ctrl, 100, 0); | |
67 | module_param_named(burst, sym_driver_setup.burst_order, byte, 0); | |
68 | module_param_named(led, sym_driver_setup.scsi_led, byte, 0); | |
69 | module_param_named(diff, sym_driver_setup.scsi_diff, byte, 0); | |
70 | module_param_named(irqm, sym_driver_setup.irq_mode, byte, 0); | |
71 | module_param_named(buschk, sym_driver_setup.scsi_bus_check, byte, 0); | |
72 | module_param_named(hostid, sym_driver_setup.host_id, byte, 0); | |
73 | module_param_named(verb, sym_driver_setup.verbose, byte, 0); | |
74 | module_param_named(debug, sym_debug_flags, uint, 0); | |
75 | module_param_named(settle, sym_driver_setup.settle_delay, byte, 0); | |
76 | module_param_named(nvram, sym_driver_setup.use_nvram, byte, 0); | |
77 | module_param_named(excl, excl_string, charp, 0); | |
78 | module_param_named(safe, safe_string, charp, 0); | |
79 | ||
80 | MODULE_PARM_DESC(cmd_per_lun, "The maximum number of tags to use by default"); | |
81 | MODULE_PARM_DESC(tag_ctrl, "More detailed control over tags per LUN"); | |
82 | MODULE_PARM_DESC(burst, "Maximum burst. 0 to disable, 255 to read from registers"); | |
83 | MODULE_PARM_DESC(led, "Set to 1 to enable LED support"); | |
84 | MODULE_PARM_DESC(diff, "0 for no differential mode, 1 for BIOS, 2 for always, 3 for not GPIO3"); | |
85 | MODULE_PARM_DESC(irqm, "0 for open drain, 1 to leave alone, 2 for totem pole"); | |
86 | MODULE_PARM_DESC(buschk, "0 to not check, 1 for detach on error, 2 for warn on error"); | |
87 | MODULE_PARM_DESC(hostid, "The SCSI ID to use for the host adapters"); | |
88 | MODULE_PARM_DESC(verb, "0 for minimal verbosity, 1 for normal, 2 for excessive"); | |
89 | MODULE_PARM_DESC(debug, "Set bits to enable debugging"); | |
90 | MODULE_PARM_DESC(settle, "Settle delay in seconds. Default 3"); | |
91 | MODULE_PARM_DESC(nvram, "Option currently not used"); | |
92 | MODULE_PARM_DESC(excl, "List ioport addresses here to prevent controllers from being attached"); | |
93 | MODULE_PARM_DESC(safe, "Set other settings to a \"safe mode\""); | |
94 | ||
95 | MODULE_LICENSE("GPL"); | |
96 | MODULE_VERSION(SYM_VERSION); | |
97 | MODULE_AUTHOR("Matthew Wilcox <matthew@wil.cx>"); | |
98 | MODULE_DESCRIPTION("NCR, Symbios and LSI 8xx and 1010 PCI SCSI adapters"); | |
99 | ||
100 | static void sym2_setup_params(void) | |
101 | { | |
102 | char *p = excl_string; | |
103 | int xi = 0; | |
104 | ||
105 | while (p && (xi < 8)) { | |
106 | char *next_p; | |
107 | int val = (int) simple_strtoul(p, &next_p, 0); | |
108 | sym_driver_setup.excludes[xi++] = val; | |
109 | p = next_p; | |
110 | } | |
111 | ||
112 | if (safe_string) { | |
113 | if (*safe_string == 'y') { | |
114 | sym_driver_setup.max_tag = 0; | |
115 | sym_driver_setup.burst_order = 0; | |
116 | sym_driver_setup.scsi_led = 0; | |
117 | sym_driver_setup.scsi_diff = 1; | |
118 | sym_driver_setup.irq_mode = 0; | |
119 | sym_driver_setup.scsi_bus_check = 2; | |
120 | sym_driver_setup.host_id = 7; | |
121 | sym_driver_setup.verbose = 2; | |
122 | sym_driver_setup.settle_delay = 10; | |
123 | sym_driver_setup.use_nvram = 1; | |
124 | } else if (*safe_string != 'n') { | |
125 | printk(KERN_WARNING NAME53C8XX "Ignoring parameter %s" | |
126 | " passed to safe option", safe_string); | |
127 | } | |
128 | } | |
129 | } | |
130 | ||
1da177e4 LT |
131 | static struct scsi_transport_template *sym2_transport_template = NULL; |
132 | ||
1da177e4 LT |
133 | /* |
134 | * Driver private area in the SCSI command structure. | |
135 | */ | |
136 | struct sym_ucmd { /* Override the SCSI pointer structure */ | |
d637c454 MW |
137 | dma_addr_t data_mapping; |
138 | unsigned char data_mapped; | |
139 | unsigned char to_do; /* For error handling */ | |
140 | void (*old_done)(struct scsi_cmnd *); /* For error handling */ | |
141 | struct completion *eh_done; /* For error handling */ | |
1da177e4 LT |
142 | }; |
143 | ||
144 | #define SYM_UCMD_PTR(cmd) ((struct sym_ucmd *)(&(cmd)->SCp)) | |
145 | #define SYM_SOFTC_PTR(cmd) sym_get_hcb(cmd->device->host) | |
146 | ||
147 | static void __unmap_scsi_data(struct pci_dev *pdev, struct scsi_cmnd *cmd) | |
148 | { | |
938febd6 FT |
149 | if (SYM_UCMD_PTR(cmd)->data_mapped) |
150 | scsi_dma_unmap(cmd); | |
1da177e4 | 151 | |
938febd6 | 152 | SYM_UCMD_PTR(cmd)->data_mapped = 0; |
1da177e4 LT |
153 | } |
154 | ||
155 | static int __map_scsi_sg_data(struct pci_dev *pdev, struct scsi_cmnd *cmd) | |
156 | { | |
157 | int use_sg; | |
1da177e4 | 158 | |
938febd6 | 159 | use_sg = scsi_dma_map(cmd); |
1da177e4 LT |
160 | if (use_sg > 0) { |
161 | SYM_UCMD_PTR(cmd)->data_mapped = 2; | |
162 | SYM_UCMD_PTR(cmd)->data_mapping = use_sg; | |
163 | } | |
164 | ||
165 | return use_sg; | |
166 | } | |
167 | ||
168 | #define unmap_scsi_data(np, cmd) \ | |
169 | __unmap_scsi_data(np->s.device, cmd) | |
1da177e4 LT |
170 | #define map_scsi_sg_data(np, cmd) \ |
171 | __map_scsi_sg_data(np->s.device, cmd) | |
172 | /* | |
173 | * Complete a pending CAM CCB. | |
174 | */ | |
175 | void sym_xpt_done(struct sym_hcb *np, struct scsi_cmnd *cmd) | |
176 | { | |
177 | unmap_scsi_data(np, cmd); | |
178 | cmd->scsi_done(cmd); | |
179 | } | |
180 | ||
181 | static void sym_xpt_done2(struct sym_hcb *np, struct scsi_cmnd *cmd, int cam_status) | |
182 | { | |
183 | sym_set_cam_status(cmd, cam_status); | |
184 | sym_xpt_done(np, cmd); | |
185 | } | |
186 | ||
187 | ||
188 | /* | |
189 | * Tell the SCSI layer about a BUS RESET. | |
190 | */ | |
191 | void sym_xpt_async_bus_reset(struct sym_hcb *np) | |
192 | { | |
193 | printf_notice("%s: SCSI BUS has been reset.\n", sym_name(np)); | |
194 | np->s.settle_time = jiffies + sym_driver_setup.settle_delay * HZ; | |
195 | np->s.settle_time_valid = 1; | |
196 | if (sym_verbose >= 2) | |
197 | printf_info("%s: command processing suspended for %d seconds\n", | |
198 | sym_name(np), sym_driver_setup.settle_delay); | |
199 | } | |
200 | ||
201 | /* | |
202 | * Tell the SCSI layer about a BUS DEVICE RESET message sent. | |
203 | */ | |
204 | void sym_xpt_async_sent_bdr(struct sym_hcb *np, int target) | |
205 | { | |
206 | printf_notice("%s: TARGET %d has been reset.\n", sym_name(np), target); | |
207 | } | |
208 | ||
209 | /* | |
210 | * Choose the more appropriate CAM status if | |
211 | * the IO encountered an extended error. | |
212 | */ | |
213 | static int sym_xerr_cam_status(int cam_status, int x_status) | |
214 | { | |
215 | if (x_status) { | |
216 | if (x_status & XE_PARITY_ERR) | |
217 | cam_status = DID_PARITY; | |
218 | else if (x_status &(XE_EXTRA_DATA|XE_SODL_UNRUN|XE_SWIDE_OVRUN)) | |
219 | cam_status = DID_ERROR; | |
220 | else if (x_status & XE_BAD_PHASE) | |
221 | cam_status = DID_ERROR; | |
222 | else | |
223 | cam_status = DID_ERROR; | |
224 | } | |
225 | return cam_status; | |
226 | } | |
227 | ||
228 | /* | |
229 | * Build CAM result for a failed or auto-sensed IO. | |
230 | */ | |
231 | void sym_set_cam_result_error(struct sym_hcb *np, struct sym_ccb *cp, int resid) | |
232 | { | |
233 | struct scsi_cmnd *cmd = cp->cmd; | |
234 | u_int cam_status, scsi_status, drv_status; | |
235 | ||
236 | drv_status = 0; | |
237 | cam_status = DID_OK; | |
238 | scsi_status = cp->ssss_status; | |
239 | ||
240 | if (cp->host_flags & HF_SENSE) { | |
241 | scsi_status = cp->sv_scsi_status; | |
242 | resid = cp->sv_resid; | |
243 | if (sym_verbose && cp->sv_xerr_status) | |
244 | sym_print_xerr(cmd, cp->sv_xerr_status); | |
245 | if (cp->host_status == HS_COMPLETE && | |
246 | cp->ssss_status == S_GOOD && | |
247 | cp->xerr_status == 0) { | |
248 | cam_status = sym_xerr_cam_status(DID_OK, | |
249 | cp->sv_xerr_status); | |
250 | drv_status = DRIVER_SENSE; | |
251 | /* | |
252 | * Bounce back the sense data to user. | |
253 | */ | |
254 | memset(&cmd->sense_buffer, 0, sizeof(cmd->sense_buffer)); | |
255 | memcpy(cmd->sense_buffer, cp->sns_bbuf, | |
256 | min(sizeof(cmd->sense_buffer), | |
257 | (size_t)SYM_SNS_BBUF_LEN)); | |
258 | #if 0 | |
259 | /* | |
260 | * If the device reports a UNIT ATTENTION condition | |
261 | * due to a RESET condition, we should consider all | |
262 | * disconnect CCBs for this unit as aborted. | |
263 | */ | |
264 | if (1) { | |
265 | u_char *p; | |
266 | p = (u_char *) cmd->sense_data; | |
267 | if (p[0]==0x70 && p[2]==0x6 && p[12]==0x29) | |
268 | sym_clear_tasks(np, DID_ABORT, | |
269 | cp->target,cp->lun, -1); | |
270 | } | |
271 | #endif | |
272 | } else { | |
273 | /* | |
274 | * Error return from our internal request sense. This | |
275 | * is bad: we must clear the contingent allegiance | |
276 | * condition otherwise the device will always return | |
277 | * BUSY. Use a big stick. | |
278 | */ | |
279 | sym_reset_scsi_target(np, cmd->device->id); | |
280 | cam_status = DID_ERROR; | |
281 | } | |
282 | } else if (cp->host_status == HS_COMPLETE) /* Bad SCSI status */ | |
283 | cam_status = DID_OK; | |
284 | else if (cp->host_status == HS_SEL_TIMEOUT) /* Selection timeout */ | |
285 | cam_status = DID_NO_CONNECT; | |
286 | else if (cp->host_status == HS_UNEXPECTED) /* Unexpected BUS FREE*/ | |
287 | cam_status = DID_ERROR; | |
288 | else { /* Extended error */ | |
289 | if (sym_verbose) { | |
290 | sym_print_addr(cmd, "COMMAND FAILED (%x %x %x).\n", | |
291 | cp->host_status, cp->ssss_status, | |
292 | cp->xerr_status); | |
293 | } | |
294 | /* | |
295 | * Set the most appropriate value for CAM status. | |
296 | */ | |
297 | cam_status = sym_xerr_cam_status(DID_ERROR, cp->xerr_status); | |
298 | } | |
938febd6 | 299 | scsi_set_resid(cmd, resid); |
1da177e4 LT |
300 | cmd->result = (drv_status << 24) + (cam_status << 16) + scsi_status; |
301 | } | |
302 | ||
1da177e4 LT |
303 | static int sym_scatter(struct sym_hcb *np, struct sym_ccb *cp, struct scsi_cmnd *cmd) |
304 | { | |
305 | int segment; | |
938febd6 | 306 | int use_sg; |
1da177e4 LT |
307 | |
308 | cp->data_len = 0; | |
309 | ||
938febd6 FT |
310 | use_sg = map_scsi_sg_data(np, cmd); |
311 | if (use_sg > 0) { | |
312 | struct scatterlist *sg; | |
53222b90 | 313 | struct sym_tcb *tp = &np->target[cp->target]; |
1da177e4 LT |
314 | struct sym_tblmove *data; |
315 | ||
316 | if (use_sg > SYM_CONF_MAX_SG) { | |
317 | unmap_scsi_data(np, cmd); | |
318 | return -1; | |
319 | } | |
320 | ||
321 | data = &cp->phys.data[SYM_CONF_MAX_SG - use_sg]; | |
322 | ||
938febd6 FT |
323 | scsi_for_each_sg(cmd, sg, use_sg, segment) { |
324 | dma_addr_t baddr = sg_dma_address(sg); | |
325 | unsigned int len = sg_dma_len(sg); | |
1da177e4 | 326 | |
53222b90 MW |
327 | if ((len & 1) && (tp->head.wval & EWS)) { |
328 | len++; | |
329 | cp->odd_byte_adjustment++; | |
330 | } | |
331 | ||
1da177e4 LT |
332 | sym_build_sge(np, &data[segment], baddr, len); |
333 | cp->data_len += len; | |
334 | } | |
335 | } else { | |
336 | segment = -2; | |
337 | } | |
338 | ||
339 | return segment; | |
340 | } | |
341 | ||
342 | /* | |
343 | * Queue a SCSI command. | |
344 | */ | |
345 | static int sym_queue_command(struct sym_hcb *np, struct scsi_cmnd *cmd) | |
346 | { | |
347 | struct scsi_device *sdev = cmd->device; | |
348 | struct sym_tcb *tp; | |
349 | struct sym_lcb *lp; | |
350 | struct sym_ccb *cp; | |
351 | int order; | |
352 | ||
353 | /* | |
354 | * Minimal checkings, so that we will not | |
355 | * go outside our tables. | |
356 | */ | |
53222b90 MW |
357 | if (sdev->id == np->myaddr) { |
358 | sym_xpt_done2(np, cmd, DID_NO_CONNECT); | |
1da177e4 LT |
359 | return 0; |
360 | } | |
361 | ||
362 | /* | |
363 | * Retrieve the target descriptor. | |
364 | */ | |
365 | tp = &np->target[sdev->id]; | |
366 | ||
1da177e4 LT |
367 | /* |
368 | * Select tagged/untagged. | |
369 | */ | |
370 | lp = sym_lp(tp, sdev->lun); | |
371 | order = (lp && lp->s.reqtags) ? M_SIMPLE_TAG : 0; | |
372 | ||
373 | /* | |
374 | * Queue the SCSI IO. | |
375 | */ | |
376 | cp = sym_get_ccb(np, cmd, order); | |
377 | if (!cp) | |
378 | return 1; /* Means resource shortage */ | |
379 | sym_queue_scsiio(np, cmd, cp); | |
380 | return 0; | |
381 | } | |
382 | ||
383 | /* | |
384 | * Setup buffers and pointers that address the CDB. | |
385 | */ | |
386 | static inline int sym_setup_cdb(struct sym_hcb *np, struct scsi_cmnd *cmd, struct sym_ccb *cp) | |
387 | { | |
1da177e4 | 388 | memcpy(cp->cdb_buf, cmd->cmnd, cmd->cmd_len); |
1da177e4 | 389 | |
53222b90 MW |
390 | cp->phys.cmd.addr = CCB_BA(cp, cdb_buf[0]); |
391 | cp->phys.cmd.size = cpu_to_scr(cmd->cmd_len); | |
1da177e4 LT |
392 | |
393 | return 0; | |
394 | } | |
395 | ||
396 | /* | |
397 | * Setup pointers that address the data and start the I/O. | |
398 | */ | |
399 | int sym_setup_data_and_start(struct sym_hcb *np, struct scsi_cmnd *cmd, struct sym_ccb *cp) | |
400 | { | |
44f30b0f MW |
401 | u32 lastp, goalp; |
402 | int dir; | |
1da177e4 LT |
403 | |
404 | /* | |
405 | * Build the CDB. | |
406 | */ | |
407 | if (sym_setup_cdb(np, cmd, cp)) | |
408 | goto out_abort; | |
409 | ||
410 | /* | |
411 | * No direction means no data. | |
412 | */ | |
413 | dir = cmd->sc_data_direction; | |
414 | if (dir != DMA_NONE) { | |
415 | cp->segments = sym_scatter(np, cp, cmd); | |
416 | if (cp->segments < 0) { | |
53222b90 | 417 | sym_set_cam_status(cmd, DID_ERROR); |
1da177e4 LT |
418 | goto out_abort; |
419 | } | |
44f30b0f MW |
420 | |
421 | /* | |
422 | * No segments means no data. | |
423 | */ | |
424 | if (!cp->segments) | |
425 | dir = DMA_NONE; | |
1da177e4 LT |
426 | } else { |
427 | cp->data_len = 0; | |
428 | cp->segments = 0; | |
429 | } | |
430 | ||
431 | /* | |
44f30b0f MW |
432 | * Set the data pointer. |
433 | */ | |
434 | switch (dir) { | |
435 | case DMA_BIDIRECTIONAL: | |
436 | printk("%s: got DMA_BIDIRECTIONAL command", sym_name(np)); | |
437 | sym_set_cam_status(cmd, DID_ERROR); | |
438 | goto out_abort; | |
439 | case DMA_TO_DEVICE: | |
440 | goalp = SCRIPTA_BA(np, data_out2) + 8; | |
441 | lastp = goalp - 8 - (cp->segments * (2*4)); | |
442 | break; | |
443 | case DMA_FROM_DEVICE: | |
444 | cp->host_flags |= HF_DATA_IN; | |
445 | goalp = SCRIPTA_BA(np, data_in2) + 8; | |
446 | lastp = goalp - 8 - (cp->segments * (2*4)); | |
447 | break; | |
448 | case DMA_NONE: | |
449 | default: | |
450 | lastp = goalp = SCRIPTB_BA(np, no_data); | |
451 | break; | |
452 | } | |
453 | ||
454 | /* | |
455 | * Set all pointers values needed by SCRIPTS. | |
1da177e4 | 456 | */ |
44f30b0f MW |
457 | cp->phys.head.lastp = cpu_to_scr(lastp); |
458 | cp->phys.head.savep = cpu_to_scr(lastp); | |
459 | cp->startp = cp->phys.head.savep; | |
460 | cp->goalp = cpu_to_scr(goalp); | |
1da177e4 LT |
461 | |
462 | /* | |
463 | * When `#ifed 1', the code below makes the driver | |
464 | * panic on the first attempt to write to a SCSI device. | |
465 | * It is the first test we want to do after a driver | |
466 | * change that does not seem obviously safe. :) | |
467 | */ | |
468 | #if 0 | |
469 | switch (cp->cdb_buf[0]) { | |
470 | case 0x0A: case 0x2A: case 0xAA: | |
471 | panic("XXXXXXXXXXXXX WRITE NOT YET ALLOWED XXXXXXXXXXXXXX\n"); | |
472 | break; | |
473 | default: | |
474 | break; | |
475 | } | |
476 | #endif | |
477 | ||
478 | /* | |
479 | * activate this job. | |
480 | */ | |
3bea15a7 | 481 | sym_put_start_queue(np, cp); |
1da177e4 LT |
482 | return 0; |
483 | ||
484 | out_abort: | |
485 | sym_free_ccb(np, cp); | |
486 | sym_xpt_done(np, cmd); | |
487 | return 0; | |
488 | } | |
489 | ||
490 | ||
491 | /* | |
492 | * timer daemon. | |
493 | * | |
494 | * Misused to keep the driver running when | |
495 | * interrupts are not configured correctly. | |
496 | */ | |
497 | static void sym_timer(struct sym_hcb *np) | |
498 | { | |
499 | unsigned long thistime = jiffies; | |
500 | ||
501 | /* | |
502 | * Restart the timer. | |
503 | */ | |
504 | np->s.timer.expires = thistime + SYM_CONF_TIMER_INTERVAL; | |
505 | add_timer(&np->s.timer); | |
506 | ||
507 | /* | |
508 | * If we are resetting the ncr, wait for settle_time before | |
509 | * clearing it. Then command processing will be resumed. | |
510 | */ | |
511 | if (np->s.settle_time_valid) { | |
512 | if (time_before_eq(np->s.settle_time, thistime)) { | |
513 | if (sym_verbose >= 2 ) | |
514 | printk("%s: command processing resumed\n", | |
515 | sym_name(np)); | |
516 | np->s.settle_time_valid = 0; | |
517 | } | |
518 | return; | |
519 | } | |
520 | ||
521 | /* | |
522 | * Nothing to do for now, but that may come. | |
523 | */ | |
524 | if (np->s.lasttime + 4*HZ < thistime) { | |
525 | np->s.lasttime = thistime; | |
526 | } | |
527 | ||
528 | #ifdef SYM_CONF_PCIQ_MAY_MISS_COMPLETIONS | |
529 | /* | |
530 | * Some way-broken PCI bridges may lead to | |
531 | * completions being lost when the clearing | |
532 | * of the INTFLY flag by the CPU occurs | |
533 | * concurrently with the chip raising this flag. | |
534 | * If this ever happen, lost completions will | |
535 | * be reaped here. | |
536 | */ | |
537 | sym_wakeup_done(np); | |
538 | #endif | |
539 | } | |
540 | ||
541 | ||
542 | /* | |
543 | * PCI BUS error handler. | |
544 | */ | |
545 | void sym_log_bus_error(struct sym_hcb *np) | |
546 | { | |
547 | u_short pci_sts; | |
548 | pci_read_config_word(np->s.device, PCI_STATUS, &pci_sts); | |
549 | if (pci_sts & 0xf900) { | |
550 | pci_write_config_word(np->s.device, PCI_STATUS, pci_sts); | |
551 | printf("%s: PCI STATUS = 0x%04x\n", | |
552 | sym_name(np), pci_sts & 0xf900); | |
553 | } | |
554 | } | |
555 | ||
556 | /* | |
557 | * queuecommand method. Entered with the host adapter lock held and | |
558 | * interrupts disabled. | |
559 | */ | |
560 | static int sym53c8xx_queue_command(struct scsi_cmnd *cmd, | |
561 | void (*done)(struct scsi_cmnd *)) | |
562 | { | |
563 | struct sym_hcb *np = SYM_SOFTC_PTR(cmd); | |
564 | struct sym_ucmd *ucp = SYM_UCMD_PTR(cmd); | |
565 | int sts = 0; | |
566 | ||
567 | cmd->scsi_done = done; | |
568 | memset(ucp, 0, sizeof(*ucp)); | |
569 | ||
570 | /* | |
571 | * Shorten our settle_time if needed for | |
572 | * this command not to time out. | |
573 | */ | |
574 | if (np->s.settle_time_valid && cmd->timeout_per_command) { | |
575 | unsigned long tlimit = jiffies + cmd->timeout_per_command; | |
576 | tlimit -= SYM_CONF_TIMER_INTERVAL*2; | |
577 | if (time_after(np->s.settle_time, tlimit)) { | |
578 | np->s.settle_time = tlimit; | |
579 | } | |
580 | } | |
581 | ||
582 | if (np->s.settle_time_valid) | |
583 | return SCSI_MLQUEUE_HOST_BUSY; | |
584 | ||
585 | sts = sym_queue_command(np, cmd); | |
586 | if (sts) | |
587 | return SCSI_MLQUEUE_HOST_BUSY; | |
588 | return 0; | |
589 | } | |
590 | ||
591 | /* | |
592 | * Linux entry point of the interrupt handler. | |
593 | */ | |
7d12e780 | 594 | static irqreturn_t sym53c8xx_intr(int irq, void *dev_id) |
1da177e4 LT |
595 | { |
596 | unsigned long flags; | |
597 | struct sym_hcb *np = (struct sym_hcb *)dev_id; | |
598 | ||
599 | if (DEBUG_FLAGS & DEBUG_TINY) printf_debug ("["); | |
600 | ||
601 | spin_lock_irqsave(np->s.host->host_lock, flags); | |
602 | sym_interrupt(np); | |
603 | spin_unlock_irqrestore(np->s.host->host_lock, flags); | |
604 | ||
605 | if (DEBUG_FLAGS & DEBUG_TINY) printf_debug ("]\n"); | |
606 | ||
607 | return IRQ_HANDLED; | |
608 | } | |
609 | ||
610 | /* | |
611 | * Linux entry point of the timer handler | |
612 | */ | |
613 | static void sym53c8xx_timer(unsigned long npref) | |
614 | { | |
615 | struct sym_hcb *np = (struct sym_hcb *)npref; | |
616 | unsigned long flags; | |
617 | ||
618 | spin_lock_irqsave(np->s.host->host_lock, flags); | |
619 | sym_timer(np); | |
620 | spin_unlock_irqrestore(np->s.host->host_lock, flags); | |
621 | } | |
622 | ||
623 | ||
624 | /* | |
625 | * What the eh thread wants us to perform. | |
626 | */ | |
627 | #define SYM_EH_ABORT 0 | |
628 | #define SYM_EH_DEVICE_RESET 1 | |
629 | #define SYM_EH_BUS_RESET 2 | |
630 | #define SYM_EH_HOST_RESET 3 | |
631 | ||
632 | /* | |
633 | * What we will do regarding the involved SCSI command. | |
634 | */ | |
635 | #define SYM_EH_DO_IGNORE 0 | |
1da177e4 LT |
636 | #define SYM_EH_DO_WAIT 2 |
637 | ||
638 | /* | |
b4e93a73 | 639 | * scsi_done() alias when error recovery is in progress. |
1da177e4 | 640 | */ |
b4e93a73 | 641 | static void sym_eh_done(struct scsi_cmnd *cmd) |
1da177e4 | 642 | { |
b4e93a73 MW |
643 | struct sym_ucmd *ucmd = SYM_UCMD_PTR(cmd); |
644 | BUILD_BUG_ON(sizeof(struct scsi_pointer) < sizeof(struct sym_ucmd)); | |
1da177e4 | 645 | |
b4e93a73 | 646 | cmd->scsi_done = ucmd->old_done; |
1da177e4 | 647 | |
b4e93a73 | 648 | if (ucmd->to_do == SYM_EH_DO_WAIT) |
d637c454 | 649 | complete(ucmd->eh_done); |
1da177e4 LT |
650 | } |
651 | ||
1da177e4 LT |
652 | /* |
653 | * Generic method for our eh processing. | |
654 | * The 'op' argument tells what we have to do. | |
655 | */ | |
656 | static int sym_eh_handler(int op, char *opname, struct scsi_cmnd *cmd) | |
657 | { | |
658 | struct sym_hcb *np = SYM_SOFTC_PTR(cmd); | |
b4e93a73 MW |
659 | struct sym_ucmd *ucmd = SYM_UCMD_PTR(cmd); |
660 | struct Scsi_Host *host = cmd->device->host; | |
1da177e4 LT |
661 | SYM_QUEHEAD *qp; |
662 | int to_do = SYM_EH_DO_IGNORE; | |
663 | int sts = -1; | |
d637c454 | 664 | struct completion eh_done; |
1da177e4 LT |
665 | |
666 | dev_warn(&cmd->device->sdev_gendev, "%s operation started.\n", opname); | |
667 | ||
b4e93a73 | 668 | spin_lock_irq(host->host_lock); |
1da177e4 LT |
669 | /* This one is queued in some place -> to wait for completion */ |
670 | FOR_EACH_QUEUED_ELEMENT(&np->busy_ccbq, qp) { | |
671 | struct sym_ccb *cp = sym_que_entry(qp, struct sym_ccb, link_ccbq); | |
672 | if (cp->cmd == cmd) { | |
673 | to_do = SYM_EH_DO_WAIT; | |
ab19d52b | 674 | break; |
1da177e4 LT |
675 | } |
676 | } | |
677 | ||
ab19d52b | 678 | if (to_do == SYM_EH_DO_WAIT) { |
d637c454 | 679 | init_completion(&eh_done); |
b4e93a73 | 680 | ucmd->old_done = cmd->scsi_done; |
d637c454 MW |
681 | ucmd->eh_done = &eh_done; |
682 | wmb(); | |
1da177e4 | 683 | cmd->scsi_done = sym_eh_done; |
1da177e4 LT |
684 | } |
685 | ||
686 | /* Try to proceed the operation we have been asked for */ | |
687 | sts = -1; | |
688 | switch(op) { | |
689 | case SYM_EH_ABORT: | |
690 | sts = sym_abort_scsiio(np, cmd, 1); | |
691 | break; | |
692 | case SYM_EH_DEVICE_RESET: | |
693 | sts = sym_reset_scsi_target(np, cmd->device->id); | |
694 | break; | |
695 | case SYM_EH_BUS_RESET: | |
696 | sym_reset_scsi_bus(np, 1); | |
697 | sts = 0; | |
698 | break; | |
699 | case SYM_EH_HOST_RESET: | |
700 | sym_reset_scsi_bus(np, 0); | |
701 | sym_start_up (np, 1); | |
702 | sts = 0; | |
703 | break; | |
704 | default: | |
705 | break; | |
706 | } | |
707 | ||
708 | /* On error, restore everything and cross fingers :) */ | |
709 | if (sts) { | |
b4e93a73 | 710 | cmd->scsi_done = ucmd->old_done; |
1da177e4 LT |
711 | to_do = SYM_EH_DO_IGNORE; |
712 | } | |
713 | ||
b4e93a73 MW |
714 | ucmd->to_do = to_do; |
715 | spin_unlock_irq(host->host_lock); | |
1da177e4 | 716 | |
1da177e4 | 717 | if (to_do == SYM_EH_DO_WAIT) { |
d637c454 | 718 | if (!wait_for_completion_timeout(&eh_done, 5*HZ)) { |
b4e93a73 | 719 | ucmd->to_do = SYM_EH_DO_IGNORE; |
d637c454 | 720 | wmb(); |
1da177e4 | 721 | sts = -2; |
b4e93a73 | 722 | } |
1da177e4 LT |
723 | } |
724 | dev_warn(&cmd->device->sdev_gendev, "%s operation %s.\n", opname, | |
725 | sts==0 ? "complete" :sts==-2 ? "timed-out" : "failed"); | |
726 | return sts ? SCSI_FAILED : SCSI_SUCCESS; | |
727 | } | |
728 | ||
729 | ||
730 | /* | |
731 | * Error handlers called from the eh thread (one thread per HBA). | |
732 | */ | |
733 | static int sym53c8xx_eh_abort_handler(struct scsi_cmnd *cmd) | |
734 | { | |
ab19d52b | 735 | return sym_eh_handler(SYM_EH_ABORT, "ABORT", cmd); |
1da177e4 LT |
736 | } |
737 | ||
738 | static int sym53c8xx_eh_device_reset_handler(struct scsi_cmnd *cmd) | |
739 | { | |
ab19d52b | 740 | return sym_eh_handler(SYM_EH_DEVICE_RESET, "DEVICE RESET", cmd); |
1da177e4 LT |
741 | } |
742 | ||
743 | static int sym53c8xx_eh_bus_reset_handler(struct scsi_cmnd *cmd) | |
744 | { | |
ab19d52b | 745 | return sym_eh_handler(SYM_EH_BUS_RESET, "BUS RESET", cmd); |
1da177e4 LT |
746 | } |
747 | ||
748 | static int sym53c8xx_eh_host_reset_handler(struct scsi_cmnd *cmd) | |
749 | { | |
ab19d52b | 750 | return sym_eh_handler(SYM_EH_HOST_RESET, "HOST RESET", cmd); |
1da177e4 LT |
751 | } |
752 | ||
753 | /* | |
754 | * Tune device queuing depth, according to various limits. | |
755 | */ | |
756 | static void sym_tune_dev_queuing(struct sym_tcb *tp, int lun, u_short reqtags) | |
757 | { | |
758 | struct sym_lcb *lp = sym_lp(tp, lun); | |
759 | u_short oldtags; | |
760 | ||
761 | if (!lp) | |
762 | return; | |
763 | ||
764 | oldtags = lp->s.reqtags; | |
765 | ||
766 | if (reqtags > lp->s.scdev_depth) | |
767 | reqtags = lp->s.scdev_depth; | |
768 | ||
1da177e4 LT |
769 | lp->s.reqtags = reqtags; |
770 | ||
771 | if (reqtags != oldtags) { | |
53222b90 | 772 | dev_info(&tp->starget->dev, |
1da177e4 | 773 | "tagged command queuing %s, command queue depth %d.\n", |
3bea15a7 | 774 | lp->s.reqtags ? "enabled" : "disabled", reqtags); |
1da177e4 LT |
775 | } |
776 | } | |
777 | ||
778 | /* | |
779 | * Linux select queue depths function | |
780 | */ | |
781 | #define DEF_DEPTH (sym_driver_setup.max_tag) | |
782 | #define ALL_TARGETS -2 | |
783 | #define NO_TARGET -1 | |
784 | #define ALL_LUNS -2 | |
785 | #define NO_LUN -1 | |
786 | ||
787 | static int device_queue_depth(struct sym_hcb *np, int target, int lun) | |
788 | { | |
789 | int c, h, t, u, v; | |
790 | char *p = sym_driver_setup.tag_ctrl; | |
791 | char *ep; | |
792 | ||
793 | h = -1; | |
794 | t = NO_TARGET; | |
795 | u = NO_LUN; | |
796 | while ((c = *p++) != 0) { | |
797 | v = simple_strtoul(p, &ep, 0); | |
798 | switch(c) { | |
799 | case '/': | |
800 | ++h; | |
801 | t = ALL_TARGETS; | |
802 | u = ALL_LUNS; | |
803 | break; | |
804 | case 't': | |
805 | if (t != target) | |
806 | t = (target == v) ? v : NO_TARGET; | |
807 | u = ALL_LUNS; | |
808 | break; | |
809 | case 'u': | |
810 | if (u != lun) | |
811 | u = (lun == v) ? v : NO_LUN; | |
812 | break; | |
813 | case 'q': | |
814 | if (h == np->s.unit && | |
815 | (t == ALL_TARGETS || t == target) && | |
816 | (u == ALL_LUNS || u == lun)) | |
817 | return v; | |
818 | break; | |
819 | case '-': | |
820 | t = ALL_TARGETS; | |
821 | u = ALL_LUNS; | |
822 | break; | |
823 | default: | |
824 | break; | |
825 | } | |
826 | p = ep; | |
827 | } | |
828 | return DEF_DEPTH; | |
829 | } | |
830 | ||
53222b90 | 831 | static int sym53c8xx_slave_alloc(struct scsi_device *sdev) |
1da177e4 | 832 | { |
84e203a2 MW |
833 | struct sym_hcb *np = sym_get_hcb(sdev->host); |
834 | struct sym_tcb *tp = &np->target[sdev->id]; | |
835 | struct sym_lcb *lp; | |
1da177e4 | 836 | |
53222b90 MW |
837 | if (sdev->id >= SYM_CONF_MAX_TARGET || sdev->lun >= SYM_CONF_MAX_LUN) |
838 | return -ENXIO; | |
1da177e4 | 839 | |
66e8d1cc | 840 | tp->starget = sdev->sdev_target; |
53222b90 MW |
841 | /* |
842 | * Fail the device init if the device is flagged NOSCAN at BOOT in | |
843 | * the NVRAM. This may speed up boot and maintain coherency with | |
844 | * BIOS device numbering. Clearing the flag allows the user to | |
845 | * rescan skipped devices later. We also return an error for | |
846 | * devices not flagged for SCAN LUNS in the NVRAM since some single | |
847 | * lun devices behave badly when asked for a non zero LUN. | |
848 | */ | |
849 | ||
66e8d1cc | 850 | if (tp->usrflags & SYM_SCAN_BOOT_DISABLED) { |
53222b90 | 851 | tp->usrflags &= ~SYM_SCAN_BOOT_DISABLED; |
66e8d1cc MW |
852 | starget_printk(KERN_INFO, tp->starget, |
853 | "Scan at boot disabled in NVRAM\n"); | |
53222b90 MW |
854 | return -ENXIO; |
855 | } | |
856 | ||
66e8d1cc MW |
857 | if (tp->usrflags & SYM_SCAN_LUNS_DISABLED) { |
858 | if (sdev->lun != 0) | |
859 | return -ENXIO; | |
860 | starget_printk(KERN_INFO, tp->starget, | |
861 | "Multiple LUNs disabled in NVRAM\n"); | |
862 | } | |
863 | ||
84e203a2 MW |
864 | lp = sym_alloc_lcb(np, sdev->id, sdev->lun); |
865 | if (!lp) | |
866 | return -ENOMEM; | |
867 | ||
b37df489 MW |
868 | spi_min_period(tp->starget) = tp->usr_period; |
869 | spi_max_width(tp->starget) = tp->usr_width; | |
870 | ||
53222b90 | 871 | return 0; |
1da177e4 LT |
872 | } |
873 | ||
874 | /* | |
875 | * Linux entry point for device queue sizing. | |
876 | */ | |
84e203a2 | 877 | static int sym53c8xx_slave_configure(struct scsi_device *sdev) |
1da177e4 | 878 | { |
84e203a2 MW |
879 | struct sym_hcb *np = sym_get_hcb(sdev->host); |
880 | struct sym_tcb *tp = &np->target[sdev->id]; | |
881 | struct sym_lcb *lp = sym_lp(tp, sdev->lun); | |
1da177e4 LT |
882 | int reqtags, depth_to_use; |
883 | ||
1da177e4 LT |
884 | /* |
885 | * Get user flags. | |
886 | */ | |
887 | lp->curr_flags = lp->user_flags; | |
888 | ||
889 | /* | |
890 | * Select queue depth from driver setup. | |
891 | * Donnot use more than configured by user. | |
892 | * Use at least 2. | |
893 | * Donnot use more than our maximum. | |
894 | */ | |
84e203a2 | 895 | reqtags = device_queue_depth(np, sdev->id, sdev->lun); |
1da177e4 LT |
896 | if (reqtags > tp->usrtags) |
897 | reqtags = tp->usrtags; | |
84e203a2 | 898 | if (!sdev->tagged_supported) |
1da177e4 LT |
899 | reqtags = 0; |
900 | #if 1 /* Avoid to locally queue commands for no good reasons */ | |
901 | if (reqtags > SYM_CONF_MAX_TAG) | |
902 | reqtags = SYM_CONF_MAX_TAG; | |
903 | depth_to_use = (reqtags ? reqtags : 2); | |
904 | #else | |
905 | depth_to_use = (reqtags ? SYM_CONF_MAX_TAG : 2); | |
906 | #endif | |
84e203a2 MW |
907 | scsi_adjust_queue_depth(sdev, |
908 | (sdev->tagged_supported ? | |
1da177e4 LT |
909 | MSG_SIMPLE_TAG : 0), |
910 | depth_to_use); | |
911 | lp->s.scdev_depth = depth_to_use; | |
84e203a2 | 912 | sym_tune_dev_queuing(tp, sdev->lun, reqtags); |
1da177e4 | 913 | |
84e203a2 MW |
914 | if (!spi_initial_dv(sdev->sdev_target)) |
915 | spi_dv_device(sdev); | |
1da177e4 LT |
916 | |
917 | return 0; | |
918 | } | |
919 | ||
84e203a2 MW |
920 | static void sym53c8xx_slave_destroy(struct scsi_device *sdev) |
921 | { | |
922 | struct sym_hcb *np = sym_get_hcb(sdev->host); | |
923 | struct sym_lcb *lp = sym_lp(&np->target[sdev->id], sdev->lun); | |
924 | ||
925 | if (lp->itlq_tbl) | |
926 | sym_mfree_dma(lp->itlq_tbl, SYM_CONF_MAX_TASK * 4, "ITLQ_TBL"); | |
927 | kfree(lp->cb_tags); | |
928 | sym_mfree_dma(lp, sizeof(*lp), "LCB"); | |
929 | } | |
930 | ||
1da177e4 LT |
931 | /* |
932 | * Linux entry point for info() function | |
933 | */ | |
934 | static const char *sym53c8xx_info (struct Scsi_Host *host) | |
935 | { | |
936 | return SYM_DRIVER_NAME; | |
937 | } | |
938 | ||
939 | ||
940 | #ifdef SYM_LINUX_PROC_INFO_SUPPORT | |
941 | /* | |
942 | * Proc file system stuff | |
943 | * | |
944 | * A read operation returns adapter information. | |
945 | * A write operation is a control command. | |
946 | * The string is parsed in the driver code and the command is passed | |
947 | * to the sym_usercmd() function. | |
948 | */ | |
949 | ||
950 | #ifdef SYM_LINUX_USER_COMMAND_SUPPORT | |
951 | ||
952 | struct sym_usrcmd { | |
953 | u_long target; | |
954 | u_long lun; | |
955 | u_long data; | |
956 | u_long cmd; | |
957 | }; | |
958 | ||
959 | #define UC_SETSYNC 10 | |
960 | #define UC_SETTAGS 11 | |
961 | #define UC_SETDEBUG 12 | |
962 | #define UC_SETWIDE 14 | |
963 | #define UC_SETFLAG 15 | |
964 | #define UC_SETVERBOSE 17 | |
965 | #define UC_RESETDEV 18 | |
966 | #define UC_CLEARDEV 19 | |
967 | ||
968 | static void sym_exec_user_command (struct sym_hcb *np, struct sym_usrcmd *uc) | |
969 | { | |
970 | struct sym_tcb *tp; | |
971 | int t, l; | |
972 | ||
973 | switch (uc->cmd) { | |
974 | case 0: return; | |
975 | ||
976 | #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT | |
977 | case UC_SETDEBUG: | |
978 | sym_debug_flags = uc->data; | |
979 | break; | |
980 | #endif | |
981 | case UC_SETVERBOSE: | |
982 | np->verbose = uc->data; | |
983 | break; | |
984 | default: | |
985 | /* | |
986 | * We assume that other commands apply to targets. | |
987 | * This should always be the case and avoid the below | |
988 | * 4 lines to be repeated 6 times. | |
989 | */ | |
990 | for (t = 0; t < SYM_CONF_MAX_TARGET; t++) { | |
991 | if (!((uc->target >> t) & 1)) | |
992 | continue; | |
993 | tp = &np->target[t]; | |
994 | ||
995 | switch (uc->cmd) { | |
996 | ||
997 | case UC_SETSYNC: | |
998 | if (!uc->data || uc->data >= 255) { | |
999 | tp->tgoal.iu = tp->tgoal.dt = | |
1000 | tp->tgoal.qas = 0; | |
1001 | tp->tgoal.offset = 0; | |
1002 | } else if (uc->data <= 9 && np->minsync_dt) { | |
1003 | if (uc->data < np->minsync_dt) | |
1004 | uc->data = np->minsync_dt; | |
1005 | tp->tgoal.iu = tp->tgoal.dt = | |
1006 | tp->tgoal.qas = 1; | |
1007 | tp->tgoal.width = 1; | |
1008 | tp->tgoal.period = uc->data; | |
1009 | tp->tgoal.offset = np->maxoffs_dt; | |
1010 | } else { | |
1011 | if (uc->data < np->minsync) | |
1012 | uc->data = np->minsync; | |
1013 | tp->tgoal.iu = tp->tgoal.dt = | |
1014 | tp->tgoal.qas = 0; | |
1015 | tp->tgoal.period = uc->data; | |
1016 | tp->tgoal.offset = np->maxoffs; | |
1017 | } | |
1018 | tp->tgoal.check_nego = 1; | |
1019 | break; | |
1020 | case UC_SETWIDE: | |
1021 | tp->tgoal.width = uc->data ? 1 : 0; | |
1022 | tp->tgoal.check_nego = 1; | |
1023 | break; | |
1024 | case UC_SETTAGS: | |
1025 | for (l = 0; l < SYM_CONF_MAX_LUN; l++) | |
1026 | sym_tune_dev_queuing(tp, l, uc->data); | |
1027 | break; | |
1028 | case UC_RESETDEV: | |
1029 | tp->to_reset = 1; | |
1030 | np->istat_sem = SEM; | |
1031 | OUTB(np, nc_istat, SIGP|SEM); | |
1032 | break; | |
1033 | case UC_CLEARDEV: | |
1034 | for (l = 0; l < SYM_CONF_MAX_LUN; l++) { | |
1035 | struct sym_lcb *lp = sym_lp(tp, l); | |
1036 | if (lp) lp->to_clear = 1; | |
1037 | } | |
1038 | np->istat_sem = SEM; | |
1039 | OUTB(np, nc_istat, SIGP|SEM); | |
1040 | break; | |
1041 | case UC_SETFLAG: | |
1042 | tp->usrflags = uc->data; | |
1043 | break; | |
1044 | } | |
1045 | } | |
1046 | break; | |
1047 | } | |
1048 | } | |
1049 | ||
1050 | static int skip_spaces(char *ptr, int len) | |
1051 | { | |
1052 | int cnt, c; | |
1053 | ||
1054 | for (cnt = len; cnt > 0 && (c = *ptr++) && isspace(c); cnt--); | |
1055 | ||
1056 | return (len - cnt); | |
1057 | } | |
1058 | ||
1059 | static int get_int_arg(char *ptr, int len, u_long *pv) | |
1060 | { | |
1061 | char *end; | |
1062 | ||
1063 | *pv = simple_strtoul(ptr, &end, 10); | |
1064 | return (end - ptr); | |
1065 | } | |
1066 | ||
1067 | static int is_keyword(char *ptr, int len, char *verb) | |
1068 | { | |
1069 | int verb_len = strlen(verb); | |
1070 | ||
1071 | if (len >= verb_len && !memcmp(verb, ptr, verb_len)) | |
1072 | return verb_len; | |
1073 | else | |
1074 | return 0; | |
1075 | } | |
1076 | ||
1077 | #define SKIP_SPACES(ptr, len) \ | |
1078 | if ((arg_len = skip_spaces(ptr, len)) < 1) \ | |
1079 | return -EINVAL; \ | |
1080 | ptr += arg_len; len -= arg_len; | |
1081 | ||
1082 | #define GET_INT_ARG(ptr, len, v) \ | |
1083 | if (!(arg_len = get_int_arg(ptr, len, &(v)))) \ | |
1084 | return -EINVAL; \ | |
1085 | ptr += arg_len; len -= arg_len; | |
1086 | ||
1087 | ||
1088 | /* | |
1089 | * Parse a control command | |
1090 | */ | |
1091 | ||
1092 | static int sym_user_command(struct sym_hcb *np, char *buffer, int length) | |
1093 | { | |
1094 | char *ptr = buffer; | |
1095 | int len = length; | |
1096 | struct sym_usrcmd cmd, *uc = &cmd; | |
1097 | int arg_len; | |
1098 | u_long target; | |
1099 | ||
1100 | memset(uc, 0, sizeof(*uc)); | |
1101 | ||
1102 | if (len > 0 && ptr[len-1] == '\n') | |
1103 | --len; | |
1104 | ||
1105 | if ((arg_len = is_keyword(ptr, len, "setsync")) != 0) | |
1106 | uc->cmd = UC_SETSYNC; | |
1107 | else if ((arg_len = is_keyword(ptr, len, "settags")) != 0) | |
1108 | uc->cmd = UC_SETTAGS; | |
1109 | else if ((arg_len = is_keyword(ptr, len, "setverbose")) != 0) | |
1110 | uc->cmd = UC_SETVERBOSE; | |
1111 | else if ((arg_len = is_keyword(ptr, len, "setwide")) != 0) | |
1112 | uc->cmd = UC_SETWIDE; | |
1113 | #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT | |
1114 | else if ((arg_len = is_keyword(ptr, len, "setdebug")) != 0) | |
1115 | uc->cmd = UC_SETDEBUG; | |
1116 | #endif | |
1117 | else if ((arg_len = is_keyword(ptr, len, "setflag")) != 0) | |
1118 | uc->cmd = UC_SETFLAG; | |
1119 | else if ((arg_len = is_keyword(ptr, len, "resetdev")) != 0) | |
1120 | uc->cmd = UC_RESETDEV; | |
1121 | else if ((arg_len = is_keyword(ptr, len, "cleardev")) != 0) | |
1122 | uc->cmd = UC_CLEARDEV; | |
1123 | else | |
1124 | arg_len = 0; | |
1125 | ||
1126 | #ifdef DEBUG_PROC_INFO | |
1127 | printk("sym_user_command: arg_len=%d, cmd=%ld\n", arg_len, uc->cmd); | |
1128 | #endif | |
1129 | ||
1130 | if (!arg_len) | |
1131 | return -EINVAL; | |
1132 | ptr += arg_len; len -= arg_len; | |
1133 | ||
1134 | switch(uc->cmd) { | |
1135 | case UC_SETSYNC: | |
1136 | case UC_SETTAGS: | |
1137 | case UC_SETWIDE: | |
1138 | case UC_SETFLAG: | |
1139 | case UC_RESETDEV: | |
1140 | case UC_CLEARDEV: | |
1141 | SKIP_SPACES(ptr, len); | |
1142 | if ((arg_len = is_keyword(ptr, len, "all")) != 0) { | |
1143 | ptr += arg_len; len -= arg_len; | |
1144 | uc->target = ~0; | |
1145 | } else { | |
1146 | GET_INT_ARG(ptr, len, target); | |
1147 | uc->target = (1<<target); | |
1148 | #ifdef DEBUG_PROC_INFO | |
1149 | printk("sym_user_command: target=%ld\n", target); | |
1150 | #endif | |
1151 | } | |
1152 | break; | |
1153 | } | |
1154 | ||
1155 | switch(uc->cmd) { | |
1156 | case UC_SETVERBOSE: | |
1157 | case UC_SETSYNC: | |
1158 | case UC_SETTAGS: | |
1159 | case UC_SETWIDE: | |
1160 | SKIP_SPACES(ptr, len); | |
1161 | GET_INT_ARG(ptr, len, uc->data); | |
1162 | #ifdef DEBUG_PROC_INFO | |
1163 | printk("sym_user_command: data=%ld\n", uc->data); | |
1164 | #endif | |
1165 | break; | |
1166 | #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT | |
1167 | case UC_SETDEBUG: | |
1168 | while (len > 0) { | |
1169 | SKIP_SPACES(ptr, len); | |
1170 | if ((arg_len = is_keyword(ptr, len, "alloc"))) | |
1171 | uc->data |= DEBUG_ALLOC; | |
1172 | else if ((arg_len = is_keyword(ptr, len, "phase"))) | |
1173 | uc->data |= DEBUG_PHASE; | |
1174 | else if ((arg_len = is_keyword(ptr, len, "queue"))) | |
1175 | uc->data |= DEBUG_QUEUE; | |
1176 | else if ((arg_len = is_keyword(ptr, len, "result"))) | |
1177 | uc->data |= DEBUG_RESULT; | |
1178 | else if ((arg_len = is_keyword(ptr, len, "scatter"))) | |
1179 | uc->data |= DEBUG_SCATTER; | |
1180 | else if ((arg_len = is_keyword(ptr, len, "script"))) | |
1181 | uc->data |= DEBUG_SCRIPT; | |
1182 | else if ((arg_len = is_keyword(ptr, len, "tiny"))) | |
1183 | uc->data |= DEBUG_TINY; | |
1184 | else if ((arg_len = is_keyword(ptr, len, "timing"))) | |
1185 | uc->data |= DEBUG_TIMING; | |
1186 | else if ((arg_len = is_keyword(ptr, len, "nego"))) | |
1187 | uc->data |= DEBUG_NEGO; | |
1188 | else if ((arg_len = is_keyword(ptr, len, "tags"))) | |
1189 | uc->data |= DEBUG_TAGS; | |
1190 | else if ((arg_len = is_keyword(ptr, len, "pointer"))) | |
1191 | uc->data |= DEBUG_POINTER; | |
1192 | else | |
1193 | return -EINVAL; | |
1194 | ptr += arg_len; len -= arg_len; | |
1195 | } | |
1196 | #ifdef DEBUG_PROC_INFO | |
1197 | printk("sym_user_command: data=%ld\n", uc->data); | |
1198 | #endif | |
1199 | break; | |
1200 | #endif /* SYM_LINUX_DEBUG_CONTROL_SUPPORT */ | |
1201 | case UC_SETFLAG: | |
1202 | while (len > 0) { | |
1203 | SKIP_SPACES(ptr, len); | |
1204 | if ((arg_len = is_keyword(ptr, len, "no_disc"))) | |
1205 | uc->data &= ~SYM_DISC_ENABLED; | |
1206 | else | |
1207 | return -EINVAL; | |
1208 | ptr += arg_len; len -= arg_len; | |
1209 | } | |
1210 | break; | |
1211 | default: | |
1212 | break; | |
1213 | } | |
1214 | ||
1215 | if (len) | |
1216 | return -EINVAL; | |
1217 | else { | |
1218 | unsigned long flags; | |
1219 | ||
1220 | spin_lock_irqsave(np->s.host->host_lock, flags); | |
1221 | sym_exec_user_command (np, uc); | |
1222 | spin_unlock_irqrestore(np->s.host->host_lock, flags); | |
1223 | } | |
1224 | return length; | |
1225 | } | |
1226 | ||
1227 | #endif /* SYM_LINUX_USER_COMMAND_SUPPORT */ | |
1228 | ||
1229 | ||
1230 | #ifdef SYM_LINUX_USER_INFO_SUPPORT | |
1231 | /* | |
1232 | * Informations through the proc file system. | |
1233 | */ | |
1234 | struct info_str { | |
1235 | char *buffer; | |
1236 | int length; | |
1237 | int offset; | |
1238 | int pos; | |
1239 | }; | |
1240 | ||
1241 | static void copy_mem_info(struct info_str *info, char *data, int len) | |
1242 | { | |
1243 | if (info->pos + len > info->length) | |
1244 | len = info->length - info->pos; | |
1245 | ||
1246 | if (info->pos + len < info->offset) { | |
1247 | info->pos += len; | |
1248 | return; | |
1249 | } | |
1250 | if (info->pos < info->offset) { | |
1251 | data += (info->offset - info->pos); | |
1252 | len -= (info->offset - info->pos); | |
1253 | } | |
1254 | ||
1255 | if (len > 0) { | |
1256 | memcpy(info->buffer + info->pos, data, len); | |
1257 | info->pos += len; | |
1258 | } | |
1259 | } | |
1260 | ||
1261 | static int copy_info(struct info_str *info, char *fmt, ...) | |
1262 | { | |
1263 | va_list args; | |
1264 | char buf[81]; | |
1265 | int len; | |
1266 | ||
1267 | va_start(args, fmt); | |
1268 | len = vsprintf(buf, fmt, args); | |
1269 | va_end(args); | |
1270 | ||
1271 | copy_mem_info(info, buf, len); | |
1272 | return len; | |
1273 | } | |
1274 | ||
1275 | /* | |
1276 | * Copy formatted information into the input buffer. | |
1277 | */ | |
1278 | static int sym_host_info(struct sym_hcb *np, char *ptr, off_t offset, int len) | |
1279 | { | |
1280 | struct info_str info; | |
1281 | ||
1282 | info.buffer = ptr; | |
1283 | info.length = len; | |
1284 | info.offset = offset; | |
1285 | info.pos = 0; | |
1286 | ||
1287 | copy_info(&info, "Chip " NAME53C "%s, device id 0x%x, " | |
1288 | "revision id 0x%x\n", | |
1289 | np->s.chip_name, np->device_id, np->revision_id); | |
1290 | copy_info(&info, "At PCI address %s, IRQ " IRQ_FMT "\n", | |
1291 | pci_name(np->s.device), IRQ_PRM(np->s.irq)); | |
1292 | copy_info(&info, "Min. period factor %d, %s SCSI BUS%s\n", | |
1293 | (int) (np->minsync_dt ? np->minsync_dt : np->minsync), | |
1294 | np->maxwide ? "Wide" : "Narrow", | |
1295 | np->minsync_dt ? ", DT capable" : ""); | |
1296 | ||
1297 | copy_info(&info, "Max. started commands %d, " | |
1298 | "max. commands per LUN %d\n", | |
1299 | SYM_CONF_MAX_START, SYM_CONF_MAX_TAG); | |
1300 | ||
1301 | return info.pos > info.offset? info.pos - info.offset : 0; | |
1302 | } | |
1303 | #endif /* SYM_LINUX_USER_INFO_SUPPORT */ | |
1304 | ||
1305 | /* | |
1306 | * Entry point of the scsi proc fs of the driver. | |
1307 | * - func = 0 means read (returns adapter infos) | |
1308 | * - func = 1 means write (not yet merget from sym53c8xx) | |
1309 | */ | |
1310 | static int sym53c8xx_proc_info(struct Scsi_Host *host, char *buffer, | |
1311 | char **start, off_t offset, int length, int func) | |
1312 | { | |
1313 | struct sym_hcb *np = sym_get_hcb(host); | |
1314 | int retv; | |
1315 | ||
1316 | if (func) { | |
1317 | #ifdef SYM_LINUX_USER_COMMAND_SUPPORT | |
1318 | retv = sym_user_command(np, buffer, length); | |
1319 | #else | |
1320 | retv = -EINVAL; | |
1321 | #endif | |
1322 | } else { | |
1323 | if (start) | |
1324 | *start = buffer; | |
1325 | #ifdef SYM_LINUX_USER_INFO_SUPPORT | |
1326 | retv = sym_host_info(np, buffer, offset, length); | |
1327 | #else | |
1328 | retv = -EINVAL; | |
1329 | #endif | |
1330 | } | |
1331 | ||
1332 | return retv; | |
1333 | } | |
1334 | #endif /* SYM_LINUX_PROC_INFO_SUPPORT */ | |
1335 | ||
1336 | /* | |
1337 | * Free controller resources. | |
1338 | */ | |
1339 | static void sym_free_resources(struct sym_hcb *np, struct pci_dev *pdev) | |
1340 | { | |
1341 | /* | |
1342 | * Free O/S specific resources. | |
1343 | */ | |
1344 | if (np->s.irq) | |
1345 | free_irq(np->s.irq, np); | |
1346 | if (np->s.ioaddr) | |
1347 | pci_iounmap(pdev, np->s.ioaddr); | |
1348 | if (np->s.ramaddr) | |
1349 | pci_iounmap(pdev, np->s.ramaddr); | |
1350 | /* | |
1351 | * Free O/S independent resources. | |
1352 | */ | |
1353 | sym_hcb_free(np); | |
1354 | ||
1355 | sym_mfree_dma(np, sizeof(*np), "HCB"); | |
1356 | } | |
1357 | ||
1358 | /* | |
1359 | * Ask/tell the system about DMA addressing. | |
1360 | */ | |
1361 | static int sym_setup_bus_dma_mask(struct sym_hcb *np) | |
1362 | { | |
1363 | #if SYM_CONF_DMA_ADDRESSING_MODE > 0 | |
1364 | #if SYM_CONF_DMA_ADDRESSING_MODE == 1 | |
1e8eb21e | 1365 | #define DMA_DAC_MASK DMA_40BIT_MASK |
1da177e4 LT |
1366 | #elif SYM_CONF_DMA_ADDRESSING_MODE == 2 |
1367 | #define DMA_DAC_MASK DMA_64BIT_MASK | |
1368 | #endif | |
1369 | if ((np->features & FE_DAC) && | |
1370 | !pci_set_dma_mask(np->s.device, DMA_DAC_MASK)) { | |
1371 | np->use_dac = 1; | |
1372 | return 0; | |
1373 | } | |
1374 | #endif | |
1375 | ||
1376 | if (!pci_set_dma_mask(np->s.device, DMA_32BIT_MASK)) | |
1377 | return 0; | |
1378 | ||
1379 | printf_warning("%s: No suitable DMA available\n", sym_name(np)); | |
1380 | return -1; | |
1381 | } | |
1382 | ||
1383 | /* | |
1384 | * Host attach and initialisations. | |
1385 | * | |
1386 | * Allocate host data and ncb structure. | |
1387 | * Remap MMIO region. | |
1388 | * Do chip initialization. | |
1389 | * If all is OK, install interrupt handling and | |
1390 | * start the timer daemon. | |
1391 | */ | |
1392 | static struct Scsi_Host * __devinit sym_attach(struct scsi_host_template *tpnt, | |
1393 | int unit, struct sym_device *dev) | |
1394 | { | |
1395 | struct host_data *host_data; | |
1396 | struct sym_hcb *np = NULL; | |
1397 | struct Scsi_Host *instance = NULL; | |
1398 | struct pci_dev *pdev = dev->pdev; | |
1399 | unsigned long flags; | |
1400 | struct sym_fw *fw; | |
1401 | ||
1402 | printk(KERN_INFO | |
1403 | "sym%d: <%s> rev 0x%x at pci %s irq " IRQ_FMT "\n", | |
1404 | unit, dev->chip.name, dev->chip.revision_id, | |
1405 | pci_name(pdev), IRQ_PRM(pdev->irq)); | |
1406 | ||
1407 | /* | |
1408 | * Get the firmware for this chip. | |
1409 | */ | |
1410 | fw = sym_find_firmware(&dev->chip); | |
1411 | if (!fw) | |
1412 | goto attach_failed; | |
1413 | ||
1414 | /* | |
1415 | * Allocate host_data structure | |
1416 | */ | |
1417 | instance = scsi_host_alloc(tpnt, sizeof(*host_data)); | |
1418 | if (!instance) | |
1419 | goto attach_failed; | |
1420 | host_data = (struct host_data *) instance->hostdata; | |
1421 | ||
1422 | /* | |
1423 | * Allocate immediately the host control block, | |
1424 | * since we are only expecting to succeed. :) | |
1425 | * We keep track in the HCB of all the resources that | |
1426 | * are to be released on error. | |
1427 | */ | |
1428 | np = __sym_calloc_dma(&pdev->dev, sizeof(*np), "HCB"); | |
1429 | if (!np) | |
1430 | goto attach_failed; | |
1431 | np->s.device = pdev; | |
1432 | np->bus_dmat = &pdev->dev; /* Result in 1 DMA pool per HBA */ | |
1433 | host_data->ncb = np; | |
1434 | np->s.host = instance; | |
1435 | ||
1436 | pci_set_drvdata(pdev, np); | |
1437 | ||
1438 | /* | |
1439 | * Copy some useful infos to the HCB. | |
1440 | */ | |
1441 | np->hcb_ba = vtobus(np); | |
1442 | np->verbose = sym_driver_setup.verbose; | |
1443 | np->s.device = pdev; | |
1444 | np->s.unit = unit; | |
1445 | np->device_id = dev->chip.device_id; | |
1446 | np->revision_id = dev->chip.revision_id; | |
1447 | np->features = dev->chip.features; | |
1448 | np->clock_divn = dev->chip.nr_divisor; | |
1449 | np->maxoffs = dev->chip.offset_max; | |
1450 | np->maxburst = dev->chip.burst_max; | |
1451 | np->myaddr = dev->host_id; | |
1452 | ||
1453 | /* | |
1454 | * Edit its name. | |
1455 | */ | |
1456 | strlcpy(np->s.chip_name, dev->chip.name, sizeof(np->s.chip_name)); | |
1457 | sprintf(np->s.inst_name, "sym%d", np->s.unit); | |
1458 | ||
1459 | if (sym_setup_bus_dma_mask(np)) | |
1460 | goto attach_failed; | |
1461 | ||
1462 | /* | |
1463 | * Try to map the controller chip to | |
1464 | * virtual and physical memory. | |
1465 | */ | |
1466 | np->mmio_ba = (u32)dev->mmio_base; | |
1467 | np->s.ioaddr = dev->s.ioaddr; | |
1468 | np->s.ramaddr = dev->s.ramaddr; | |
1469 | np->s.io_ws = (np->features & FE_IO256) ? 256 : 128; | |
1470 | ||
1471 | /* | |
1472 | * Map on-chip RAM if present and supported. | |
1473 | */ | |
1474 | if (!(np->features & FE_RAM)) | |
1475 | dev->ram_base = 0; | |
1476 | if (dev->ram_base) { | |
1477 | np->ram_ba = (u32)dev->ram_base; | |
1478 | np->ram_ws = (np->features & FE_RAM8K) ? 8192 : 4096; | |
1479 | } | |
1480 | ||
1481 | if (sym_hcb_attach(instance, fw, dev->nvram)) | |
1482 | goto attach_failed; | |
1483 | ||
1484 | /* | |
1485 | * Install the interrupt handler. | |
1486 | * If we synchonize the C code with SCRIPTS on interrupt, | |
1487 | * we do not want to share the INTR line at all. | |
1488 | */ | |
1d6f359a | 1489 | if (request_irq(pdev->irq, sym53c8xx_intr, IRQF_SHARED, NAME53C8XX, np)) { |
1da177e4 LT |
1490 | printf_err("%s: request irq %d failure\n", |
1491 | sym_name(np), pdev->irq); | |
1492 | goto attach_failed; | |
1493 | } | |
1494 | np->s.irq = pdev->irq; | |
1495 | ||
1496 | /* | |
1497 | * After SCSI devices have been opened, we cannot | |
1498 | * reset the bus safely, so we do it here. | |
1499 | */ | |
1500 | spin_lock_irqsave(instance->host_lock, flags); | |
1501 | if (sym_reset_scsi_bus(np, 0)) | |
1502 | goto reset_failed; | |
1503 | ||
1504 | /* | |
1505 | * Start the SCRIPTS. | |
1506 | */ | |
1507 | sym_start_up (np, 1); | |
1508 | ||
1509 | /* | |
1510 | * Start the timer daemon | |
1511 | */ | |
1512 | init_timer(&np->s.timer); | |
1513 | np->s.timer.data = (unsigned long) np; | |
1514 | np->s.timer.function = sym53c8xx_timer; | |
1515 | np->s.lasttime=0; | |
1516 | sym_timer (np); | |
1517 | ||
1518 | /* | |
1519 | * Fill Linux host instance structure | |
1520 | * and return success. | |
1521 | */ | |
1522 | instance->max_channel = 0; | |
1523 | instance->this_id = np->myaddr; | |
1524 | instance->max_id = np->maxwide ? 16 : 8; | |
1525 | instance->max_lun = SYM_CONF_MAX_LUN; | |
1526 | instance->unique_id = pci_resource_start(pdev, 0); | |
1527 | instance->cmd_per_lun = SYM_CONF_MAX_TAG; | |
1528 | instance->can_queue = (SYM_CONF_MAX_START-2); | |
1529 | instance->sg_tablesize = SYM_CONF_MAX_SG; | |
1530 | instance->max_cmd_len = 16; | |
1531 | BUG_ON(sym2_transport_template == NULL); | |
1532 | instance->transportt = sym2_transport_template; | |
1533 | ||
1534 | spin_unlock_irqrestore(instance->host_lock, flags); | |
1535 | ||
1536 | return instance; | |
1537 | ||
1538 | reset_failed: | |
1539 | printf_err("%s: FATAL ERROR: CHECK SCSI BUS - CABLES, " | |
1540 | "TERMINATION, DEVICE POWER etc.!\n", sym_name(np)); | |
1541 | spin_unlock_irqrestore(instance->host_lock, flags); | |
1542 | attach_failed: | |
1543 | if (!instance) | |
1544 | return NULL; | |
1545 | printf_info("%s: giving up ...\n", sym_name(np)); | |
1546 | if (np) | |
1547 | sym_free_resources(np, pdev); | |
1548 | scsi_host_put(instance); | |
1549 | ||
1550 | return NULL; | |
1551 | } | |
1552 | ||
1553 | ||
1554 | /* | |
1555 | * Detect and try to read SYMBIOS and TEKRAM NVRAM. | |
1556 | */ | |
1557 | #if SYM_CONF_NVRAM_SUPPORT | |
1558 | static void __devinit sym_get_nvram(struct sym_device *devp, struct sym_nvram *nvp) | |
1559 | { | |
1560 | devp->nvram = nvp; | |
1561 | devp->device_id = devp->chip.device_id; | |
1562 | nvp->type = 0; | |
1563 | ||
1564 | sym_read_nvram(devp, nvp); | |
1565 | } | |
1566 | #else | |
1567 | static inline void sym_get_nvram(struct sym_device *devp, struct sym_nvram *nvp) | |
1568 | { | |
1569 | } | |
1570 | #endif /* SYM_CONF_NVRAM_SUPPORT */ | |
1571 | ||
1572 | static int __devinit sym_check_supported(struct sym_device *device) | |
1573 | { | |
1574 | struct sym_chip *chip; | |
1575 | struct pci_dev *pdev = device->pdev; | |
1576 | u_char revision; | |
1577 | unsigned long io_port = pci_resource_start(pdev, 0); | |
1578 | int i; | |
1579 | ||
1580 | /* | |
1581 | * If user excluded this chip, do not initialize it. | |
1582 | * I hate this code so much. Must kill it. | |
1583 | */ | |
1584 | if (io_port) { | |
1585 | for (i = 0 ; i < 8 ; i++) { | |
1586 | if (sym_driver_setup.excludes[i] == io_port) | |
1587 | return -ENODEV; | |
1588 | } | |
1589 | } | |
1590 | ||
1591 | /* | |
1592 | * Check if the chip is supported. Then copy the chip description | |
1593 | * to our device structure so we can make it match the actual device | |
1594 | * and options. | |
1595 | */ | |
1596 | pci_read_config_byte(pdev, PCI_CLASS_REVISION, &revision); | |
1597 | chip = sym_lookup_chip_table(pdev->device, revision); | |
1598 | if (!chip) { | |
1599 | dev_info(&pdev->dev, "device not supported\n"); | |
1600 | return -ENODEV; | |
1601 | } | |
1602 | memcpy(&device->chip, chip, sizeof(device->chip)); | |
1603 | device->chip.revision_id = revision; | |
1604 | ||
1605 | return 0; | |
1606 | } | |
1607 | ||
1608 | /* | |
1609 | * Ignore Symbios chips controlled by various RAID controllers. | |
1610 | * These controllers set value 0x52414944 at RAM end - 16. | |
1611 | */ | |
1612 | static int __devinit sym_check_raid(struct sym_device *device) | |
1613 | { | |
1614 | unsigned int ram_size, ram_val; | |
1615 | ||
1616 | if (!device->s.ramaddr) | |
1617 | return 0; | |
1618 | ||
1619 | if (device->chip.features & FE_RAM8K) | |
1620 | ram_size = 8192; | |
1621 | else | |
1622 | ram_size = 4096; | |
1623 | ||
1624 | ram_val = readl(device->s.ramaddr + ram_size - 16); | |
1625 | if (ram_val != 0x52414944) | |
1626 | return 0; | |
1627 | ||
1628 | dev_info(&device->pdev->dev, | |
1629 | "not initializing, driven by RAID controller.\n"); | |
1630 | return -ENODEV; | |
1631 | } | |
1632 | ||
1633 | static int __devinit sym_set_workarounds(struct sym_device *device) | |
1634 | { | |
1635 | struct sym_chip *chip = &device->chip; | |
1636 | struct pci_dev *pdev = device->pdev; | |
1637 | u_short status_reg; | |
1638 | ||
1639 | /* | |
1640 | * (ITEM 12 of a DEL about the 896 I haven't yet). | |
1641 | * We must ensure the chip will use WRITE AND INVALIDATE. | |
1642 | * The revision number limit is for now arbitrary. | |
1643 | */ | |
1644 | if (pdev->device == PCI_DEVICE_ID_NCR_53C896 && chip->revision_id < 0x4) { | |
1645 | chip->features |= (FE_WRIE | FE_CLSE); | |
1646 | } | |
1647 | ||
1648 | /* If the chip can do Memory Write Invalidate, enable it */ | |
1649 | if (chip->features & FE_WRIE) { | |
1650 | if (pci_set_mwi(pdev)) | |
1651 | return -ENODEV; | |
1652 | } | |
1653 | ||
1654 | /* | |
1655 | * Work around for errant bit in 895A. The 66Mhz | |
1656 | * capable bit is set erroneously. Clear this bit. | |
1657 | * (Item 1 DEL 533) | |
1658 | * | |
1659 | * Make sure Config space and Features agree. | |
1660 | * | |
1661 | * Recall: writes are not normal to status register - | |
1662 | * write a 1 to clear and a 0 to leave unchanged. | |
1663 | * Can only reset bits. | |
1664 | */ | |
1665 | pci_read_config_word(pdev, PCI_STATUS, &status_reg); | |
1666 | if (chip->features & FE_66MHZ) { | |
1667 | if (!(status_reg & PCI_STATUS_66MHZ)) | |
1668 | chip->features &= ~FE_66MHZ; | |
1669 | } else { | |
1670 | if (status_reg & PCI_STATUS_66MHZ) { | |
1671 | status_reg = PCI_STATUS_66MHZ; | |
1672 | pci_write_config_word(pdev, PCI_STATUS, status_reg); | |
1673 | pci_read_config_word(pdev, PCI_STATUS, &status_reg); | |
1674 | } | |
1675 | } | |
1676 | ||
1677 | return 0; | |
1678 | } | |
1679 | ||
1680 | /* | |
1681 | * Read and check the PCI configuration for any detected NCR | |
1682 | * boards and save data for attaching after all boards have | |
1683 | * been detected. | |
1684 | */ | |
1685 | static void __devinit | |
1686 | sym_init_device(struct pci_dev *pdev, struct sym_device *device) | |
1687 | { | |
b6d105d7 MW |
1688 | int i = 2; |
1689 | struct pci_bus_region bus_addr; | |
1da177e4 LT |
1690 | |
1691 | device->host_id = SYM_SETUP_HOST_ID; | |
1692 | device->pdev = pdev; | |
1693 | ||
b6d105d7 MW |
1694 | pcibios_resource_to_bus(pdev, &bus_addr, &pdev->resource[1]); |
1695 | device->mmio_base = bus_addr.start; | |
1696 | ||
1697 | /* | |
1698 | * If the BAR is 64-bit, resource 2 will be occupied by the | |
1699 | * upper 32 bits | |
1700 | */ | |
1701 | if (!pdev->resource[i].flags) | |
1702 | i++; | |
1703 | pcibios_resource_to_bus(pdev, &bus_addr, &pdev->resource[i]); | |
1704 | device->ram_base = bus_addr.start; | |
1da177e4 | 1705 | |
1f61d824 | 1706 | #ifdef CONFIG_SCSI_SYM53C8XX_MMIO |
1da177e4 LT |
1707 | if (device->mmio_base) |
1708 | device->s.ioaddr = pci_iomap(pdev, 1, | |
1709 | pci_resource_len(pdev, 1)); | |
1710 | #endif | |
1711 | if (!device->s.ioaddr) | |
1712 | device->s.ioaddr = pci_iomap(pdev, 0, | |
1713 | pci_resource_len(pdev, 0)); | |
1714 | if (device->ram_base) | |
1715 | device->s.ramaddr = pci_iomap(pdev, i, | |
1716 | pci_resource_len(pdev, i)); | |
1717 | } | |
1718 | ||
1719 | /* | |
1720 | * The NCR PQS and PDS cards are constructed as a DEC bridge | |
1721 | * behind which sits a proprietary NCR memory controller and | |
1722 | * either four or two 53c875s as separate devices. We can tell | |
1723 | * if an 875 is part of a PQS/PDS or not since if it is, it will | |
1724 | * be on the same bus as the memory controller. In its usual | |
1725 | * mode of operation, the 875s are slaved to the memory | |
1726 | * controller for all transfers. To operate with the Linux | |
1727 | * driver, the memory controller is disabled and the 875s | |
1728 | * freed to function independently. The only wrinkle is that | |
1729 | * the preset SCSI ID (which may be zero) must be read in from | |
1730 | * a special configuration space register of the 875. | |
1731 | */ | |
1732 | static void sym_config_pqs(struct pci_dev *pdev, struct sym_device *sym_dev) | |
1733 | { | |
1734 | int slot; | |
1735 | u8 tmp; | |
1736 | ||
1737 | for (slot = 0; slot < 256; slot++) { | |
1738 | struct pci_dev *memc = pci_get_slot(pdev->bus, slot); | |
1739 | ||
1740 | if (!memc || memc->vendor != 0x101a || memc->device == 0x0009) { | |
1741 | pci_dev_put(memc); | |
1742 | continue; | |
1743 | } | |
1744 | ||
1745 | /* bit 1: allow individual 875 configuration */ | |
1746 | pci_read_config_byte(memc, 0x44, &tmp); | |
1747 | if ((tmp & 0x2) == 0) { | |
1748 | tmp |= 0x2; | |
1749 | pci_write_config_byte(memc, 0x44, tmp); | |
1750 | } | |
1751 | ||
1752 | /* bit 2: drive individual 875 interrupts to the bus */ | |
1753 | pci_read_config_byte(memc, 0x45, &tmp); | |
1754 | if ((tmp & 0x4) == 0) { | |
1755 | tmp |= 0x4; | |
1756 | pci_write_config_byte(memc, 0x45, tmp); | |
1757 | } | |
1758 | ||
1759 | pci_dev_put(memc); | |
1760 | break; | |
1761 | } | |
1762 | ||
1763 | pci_read_config_byte(pdev, 0x84, &tmp); | |
1764 | sym_dev->host_id = tmp; | |
1765 | } | |
1766 | ||
1767 | /* | |
1768 | * Called before unloading the module. | |
1769 | * Detach the host. | |
1770 | * We have to free resources and halt the NCR chip. | |
1771 | */ | |
1772 | static int sym_detach(struct sym_hcb *np, struct pci_dev *pdev) | |
1773 | { | |
1774 | printk("%s: detaching ...\n", sym_name(np)); | |
1775 | ||
1776 | del_timer_sync(&np->s.timer); | |
1777 | ||
1778 | /* | |
1779 | * Reset NCR chip. | |
1780 | * We should use sym_soft_reset(), but we don't want to do | |
1781 | * so, since we may not be safe if interrupts occur. | |
1782 | */ | |
1783 | printk("%s: resetting chip\n", sym_name(np)); | |
1784 | OUTB(np, nc_istat, SRST); | |
53222b90 | 1785 | INB(np, nc_mbox1); |
1da177e4 LT |
1786 | udelay(10); |
1787 | OUTB(np, nc_istat, 0); | |
1788 | ||
1789 | sym_free_resources(np, pdev); | |
1790 | ||
1791 | return 1; | |
1792 | } | |
1793 | ||
1794 | /* | |
1795 | * Driver host template. | |
1796 | */ | |
1797 | static struct scsi_host_template sym2_template = { | |
1798 | .module = THIS_MODULE, | |
1799 | .name = "sym53c8xx", | |
1800 | .info = sym53c8xx_info, | |
1801 | .queuecommand = sym53c8xx_queue_command, | |
1802 | .slave_alloc = sym53c8xx_slave_alloc, | |
1803 | .slave_configure = sym53c8xx_slave_configure, | |
84e203a2 | 1804 | .slave_destroy = sym53c8xx_slave_destroy, |
1da177e4 LT |
1805 | .eh_abort_handler = sym53c8xx_eh_abort_handler, |
1806 | .eh_device_reset_handler = sym53c8xx_eh_device_reset_handler, | |
1807 | .eh_bus_reset_handler = sym53c8xx_eh_bus_reset_handler, | |
1808 | .eh_host_reset_handler = sym53c8xx_eh_host_reset_handler, | |
1809 | .this_id = 7, | |
14ac8bf5 | 1810 | .use_clustering = ENABLE_CLUSTERING, |
9cb83c75 | 1811 | .use_sg_chaining = ENABLE_SG_CHAINING, |
14ac8bf5 | 1812 | .max_sectors = 0xFFFF, |
1da177e4 LT |
1813 | #ifdef SYM_LINUX_PROC_INFO_SUPPORT |
1814 | .proc_info = sym53c8xx_proc_info, | |
1815 | .proc_name = NAME53C8XX, | |
1816 | #endif | |
1817 | }; | |
1818 | ||
1819 | static int attach_count; | |
1820 | ||
1821 | static int __devinit sym2_probe(struct pci_dev *pdev, | |
1822 | const struct pci_device_id *ent) | |
1823 | { | |
1824 | struct sym_device sym_dev; | |
1825 | struct sym_nvram nvram; | |
1826 | struct Scsi_Host *instance; | |
1827 | ||
1828 | memset(&sym_dev, 0, sizeof(sym_dev)); | |
1829 | memset(&nvram, 0, sizeof(nvram)); | |
1830 | ||
1831 | if (pci_enable_device(pdev)) | |
1832 | goto leave; | |
1833 | ||
1834 | pci_set_master(pdev); | |
1835 | ||
1836 | if (pci_request_regions(pdev, NAME53C8XX)) | |
1837 | goto disable; | |
1838 | ||
1839 | sym_init_device(pdev, &sym_dev); | |
1840 | if (sym_check_supported(&sym_dev)) | |
1841 | goto free; | |
1842 | ||
1843 | if (sym_check_raid(&sym_dev)) | |
1844 | goto leave; /* Don't disable the device */ | |
1845 | ||
1846 | if (sym_set_workarounds(&sym_dev)) | |
1847 | goto free; | |
1848 | ||
1849 | sym_config_pqs(pdev, &sym_dev); | |
1850 | ||
1851 | sym_get_nvram(&sym_dev, &nvram); | |
1852 | ||
1853 | instance = sym_attach(&sym2_template, attach_count, &sym_dev); | |
1854 | if (!instance) | |
1855 | goto free; | |
1856 | ||
1857 | if (scsi_add_host(instance, &pdev->dev)) | |
1858 | goto detach; | |
1859 | scsi_scan_host(instance); | |
1860 | ||
1861 | attach_count++; | |
1862 | ||
1863 | return 0; | |
1864 | ||
1865 | detach: | |
1866 | sym_detach(pci_get_drvdata(pdev), pdev); | |
1867 | free: | |
1868 | pci_release_regions(pdev); | |
1869 | disable: | |
1870 | pci_disable_device(pdev); | |
1871 | leave: | |
1872 | return -ENODEV; | |
1873 | } | |
1874 | ||
1875 | static void __devexit sym2_remove(struct pci_dev *pdev) | |
1876 | { | |
1877 | struct sym_hcb *np = pci_get_drvdata(pdev); | |
1878 | struct Scsi_Host *host = np->s.host; | |
1879 | ||
1880 | scsi_remove_host(host); | |
1881 | scsi_host_put(host); | |
1882 | ||
1883 | sym_detach(np, pdev); | |
1884 | ||
1885 | pci_release_regions(pdev); | |
1886 | pci_disable_device(pdev); | |
1887 | ||
1888 | attach_count--; | |
1889 | } | |
1890 | ||
1891 | static void sym2_get_signalling(struct Scsi_Host *shost) | |
1892 | { | |
1893 | struct sym_hcb *np = sym_get_hcb(shost); | |
1894 | enum spi_signal_type type; | |
1895 | ||
1896 | switch (np->scsi_mode) { | |
1897 | case SMODE_SE: | |
1898 | type = SPI_SIGNAL_SE; | |
1899 | break; | |
1900 | case SMODE_LVD: | |
1901 | type = SPI_SIGNAL_LVD; | |
1902 | break; | |
1903 | case SMODE_HVD: | |
1904 | type = SPI_SIGNAL_HVD; | |
1905 | break; | |
1906 | default: | |
1907 | type = SPI_SIGNAL_UNKNOWN; | |
1908 | break; | |
1909 | } | |
1910 | spi_signalling(shost) = type; | |
1911 | } | |
1912 | ||
1913 | static void sym2_set_offset(struct scsi_target *starget, int offset) | |
1914 | { | |
1915 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
1916 | struct sym_hcb *np = sym_get_hcb(shost); | |
1917 | struct sym_tcb *tp = &np->target[starget->id]; | |
1918 | ||
1919 | tp->tgoal.offset = offset; | |
1920 | tp->tgoal.check_nego = 1; | |
1921 | } | |
1922 | ||
1923 | static void sym2_set_period(struct scsi_target *starget, int period) | |
1924 | { | |
1925 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
1926 | struct sym_hcb *np = sym_get_hcb(shost); | |
1927 | struct sym_tcb *tp = &np->target[starget->id]; | |
1928 | ||
e4862fed JB |
1929 | /* have to have DT for these transfers, but DT will also |
1930 | * set width, so check that this is allowed */ | |
1931 | if (period <= np->minsync && spi_width(starget)) | |
1da177e4 LT |
1932 | tp->tgoal.dt = 1; |
1933 | ||
1934 | tp->tgoal.period = period; | |
1935 | tp->tgoal.check_nego = 1; | |
1936 | } | |
1937 | ||
1938 | static void sym2_set_width(struct scsi_target *starget, int width) | |
1939 | { | |
1940 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
1941 | struct sym_hcb *np = sym_get_hcb(shost); | |
1942 | struct sym_tcb *tp = &np->target[starget->id]; | |
1943 | ||
1944 | /* It is illegal to have DT set on narrow transfers. If DT is | |
1945 | * clear, we must also clear IU and QAS. */ | |
1946 | if (width == 0) | |
1947 | tp->tgoal.iu = tp->tgoal.dt = tp->tgoal.qas = 0; | |
1948 | ||
1949 | tp->tgoal.width = width; | |
1950 | tp->tgoal.check_nego = 1; | |
1951 | } | |
1952 | ||
1953 | static void sym2_set_dt(struct scsi_target *starget, int dt) | |
1954 | { | |
1955 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
1956 | struct sym_hcb *np = sym_get_hcb(shost); | |
1957 | struct sym_tcb *tp = &np->target[starget->id]; | |
1958 | ||
1959 | /* We must clear QAS and IU if DT is clear */ | |
1960 | if (dt) | |
1961 | tp->tgoal.dt = 1; | |
1962 | else | |
1963 | tp->tgoal.iu = tp->tgoal.dt = tp->tgoal.qas = 0; | |
1964 | tp->tgoal.check_nego = 1; | |
1965 | } | |
1966 | ||
8b2f8138 | 1967 | #if 0 |
1da177e4 LT |
1968 | static void sym2_set_iu(struct scsi_target *starget, int iu) |
1969 | { | |
1970 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
1971 | struct sym_hcb *np = sym_get_hcb(shost); | |
1972 | struct sym_tcb *tp = &np->target[starget->id]; | |
1973 | ||
1974 | if (iu) | |
1975 | tp->tgoal.iu = tp->tgoal.dt = 1; | |
1976 | else | |
1977 | tp->tgoal.iu = 0; | |
1978 | tp->tgoal.check_nego = 1; | |
1979 | } | |
1980 | ||
1981 | static void sym2_set_qas(struct scsi_target *starget, int qas) | |
1982 | { | |
1983 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
1984 | struct sym_hcb *np = sym_get_hcb(shost); | |
1985 | struct sym_tcb *tp = &np->target[starget->id]; | |
1986 | ||
1987 | if (qas) | |
1988 | tp->tgoal.dt = tp->tgoal.qas = 1; | |
1989 | else | |
1990 | tp->tgoal.qas = 0; | |
1991 | tp->tgoal.check_nego = 1; | |
1992 | } | |
8b2f8138 | 1993 | #endif |
1da177e4 LT |
1994 | |
1995 | static struct spi_function_template sym2_transport_functions = { | |
1996 | .set_offset = sym2_set_offset, | |
1997 | .show_offset = 1, | |
1998 | .set_period = sym2_set_period, | |
1999 | .show_period = 1, | |
2000 | .set_width = sym2_set_width, | |
2001 | .show_width = 1, | |
2002 | .set_dt = sym2_set_dt, | |
2003 | .show_dt = 1, | |
8b2f8138 | 2004 | #if 0 |
1da177e4 LT |
2005 | .set_iu = sym2_set_iu, |
2006 | .show_iu = 1, | |
2007 | .set_qas = sym2_set_qas, | |
2008 | .show_qas = 1, | |
8b2f8138 | 2009 | #endif |
1da177e4 LT |
2010 | .get_signalling = sym2_get_signalling, |
2011 | }; | |
2012 | ||
2013 | static struct pci_device_id sym2_id_table[] __devinitdata = { | |
2014 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C810, | |
2015 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, | |
2016 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C820, | |
2017 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, /* new */ | |
2018 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C825, | |
2019 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, | |
2020 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C815, | |
2021 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, | |
2022 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C810AP, | |
2023 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, /* new */ | |
2024 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C860, | |
2025 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, | |
2026 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1510, | |
b2b3c121 | 2027 | PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_SCSI<<8, 0xffff00, 0UL }, |
1da177e4 LT |
2028 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C896, |
2029 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, | |
2030 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C895, | |
2031 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, | |
2032 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C885, | |
2033 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, | |
2034 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C875, | |
2035 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, | |
2036 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C1510, | |
147e505e | 2037 | PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_SCSI<<8, 0xffff00, 0UL }, /* new */ |
1da177e4 LT |
2038 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C895A, |
2039 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, | |
2040 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C875A, | |
2041 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, | |
2042 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1010_33, | |
2043 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, | |
2044 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1010_66, | |
2045 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, | |
2046 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C875J, | |
2047 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, | |
2048 | { 0, } | |
2049 | }; | |
2050 | ||
2051 | MODULE_DEVICE_TABLE(pci, sym2_id_table); | |
2052 | ||
2053 | static struct pci_driver sym2_driver = { | |
2054 | .name = NAME53C8XX, | |
2055 | .id_table = sym2_id_table, | |
2056 | .probe = sym2_probe, | |
2057 | .remove = __devexit_p(sym2_remove), | |
2058 | }; | |
2059 | ||
2060 | static int __init sym2_init(void) | |
2061 | { | |
2062 | int error; | |
2063 | ||
2064 | sym2_setup_params(); | |
2065 | sym2_transport_template = spi_attach_transport(&sym2_transport_functions); | |
2066 | if (!sym2_transport_template) | |
2067 | return -ENODEV; | |
2068 | ||
2069 | error = pci_register_driver(&sym2_driver); | |
2070 | if (error) | |
2071 | spi_release_transport(sym2_transport_template); | |
2072 | return error; | |
2073 | } | |
2074 | ||
2075 | static void __exit sym2_exit(void) | |
2076 | { | |
2077 | pci_unregister_driver(&sym2_driver); | |
2078 | spi_release_transport(sym2_transport_template); | |
2079 | } | |
2080 | ||
2081 | module_init(sym2_init); | |
2082 | module_exit(sym2_exit); |