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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 | ||
57 | /* SPARC just has to be different ... */ | |
58 | #ifdef __sparc__ | |
59 | #define IRQ_FMT "%s" | |
60 | #define IRQ_PRM(x) __irq_itoa(x) | |
61 | #else | |
62 | #define IRQ_FMT "%d" | |
63 | #define IRQ_PRM(x) (x) | |
64 | #endif | |
65 | ||
66 | struct sym_driver_setup sym_driver_setup = SYM_LINUX_DRIVER_SETUP; | |
67 | unsigned int sym_debug_flags = 0; | |
68 | ||
69 | static char *excl_string; | |
70 | static char *safe_string; | |
71 | module_param_named(cmd_per_lun, sym_driver_setup.max_tag, ushort, 0); | |
72 | module_param_string(tag_ctrl, sym_driver_setup.tag_ctrl, 100, 0); | |
73 | module_param_named(burst, sym_driver_setup.burst_order, byte, 0); | |
74 | module_param_named(led, sym_driver_setup.scsi_led, byte, 0); | |
75 | module_param_named(diff, sym_driver_setup.scsi_diff, byte, 0); | |
76 | module_param_named(irqm, sym_driver_setup.irq_mode, byte, 0); | |
77 | module_param_named(buschk, sym_driver_setup.scsi_bus_check, byte, 0); | |
78 | module_param_named(hostid, sym_driver_setup.host_id, byte, 0); | |
79 | module_param_named(verb, sym_driver_setup.verbose, byte, 0); | |
80 | module_param_named(debug, sym_debug_flags, uint, 0); | |
81 | module_param_named(settle, sym_driver_setup.settle_delay, byte, 0); | |
82 | module_param_named(nvram, sym_driver_setup.use_nvram, byte, 0); | |
83 | module_param_named(excl, excl_string, charp, 0); | |
84 | module_param_named(safe, safe_string, charp, 0); | |
85 | ||
86 | MODULE_PARM_DESC(cmd_per_lun, "The maximum number of tags to use by default"); | |
87 | MODULE_PARM_DESC(tag_ctrl, "More detailed control over tags per LUN"); | |
88 | MODULE_PARM_DESC(burst, "Maximum burst. 0 to disable, 255 to read from registers"); | |
89 | MODULE_PARM_DESC(led, "Set to 1 to enable LED support"); | |
90 | MODULE_PARM_DESC(diff, "0 for no differential mode, 1 for BIOS, 2 for always, 3 for not GPIO3"); | |
91 | MODULE_PARM_DESC(irqm, "0 for open drain, 1 to leave alone, 2 for totem pole"); | |
92 | MODULE_PARM_DESC(buschk, "0 to not check, 1 for detach on error, 2 for warn on error"); | |
93 | MODULE_PARM_DESC(hostid, "The SCSI ID to use for the host adapters"); | |
94 | MODULE_PARM_DESC(verb, "0 for minimal verbosity, 1 for normal, 2 for excessive"); | |
95 | MODULE_PARM_DESC(debug, "Set bits to enable debugging"); | |
96 | MODULE_PARM_DESC(settle, "Settle delay in seconds. Default 3"); | |
97 | MODULE_PARM_DESC(nvram, "Option currently not used"); | |
98 | MODULE_PARM_DESC(excl, "List ioport addresses here to prevent controllers from being attached"); | |
99 | MODULE_PARM_DESC(safe, "Set other settings to a \"safe mode\""); | |
100 | ||
101 | MODULE_LICENSE("GPL"); | |
102 | MODULE_VERSION(SYM_VERSION); | |
103 | MODULE_AUTHOR("Matthew Wilcox <matthew@wil.cx>"); | |
104 | MODULE_DESCRIPTION("NCR, Symbios and LSI 8xx and 1010 PCI SCSI adapters"); | |
105 | ||
106 | static void sym2_setup_params(void) | |
107 | { | |
108 | char *p = excl_string; | |
109 | int xi = 0; | |
110 | ||
111 | while (p && (xi < 8)) { | |
112 | char *next_p; | |
113 | int val = (int) simple_strtoul(p, &next_p, 0); | |
114 | sym_driver_setup.excludes[xi++] = val; | |
115 | p = next_p; | |
116 | } | |
117 | ||
118 | if (safe_string) { | |
119 | if (*safe_string == 'y') { | |
120 | sym_driver_setup.max_tag = 0; | |
121 | sym_driver_setup.burst_order = 0; | |
122 | sym_driver_setup.scsi_led = 0; | |
123 | sym_driver_setup.scsi_diff = 1; | |
124 | sym_driver_setup.irq_mode = 0; | |
125 | sym_driver_setup.scsi_bus_check = 2; | |
126 | sym_driver_setup.host_id = 7; | |
127 | sym_driver_setup.verbose = 2; | |
128 | sym_driver_setup.settle_delay = 10; | |
129 | sym_driver_setup.use_nvram = 1; | |
130 | } else if (*safe_string != 'n') { | |
131 | printk(KERN_WARNING NAME53C8XX "Ignoring parameter %s" | |
132 | " passed to safe option", safe_string); | |
133 | } | |
134 | } | |
135 | } | |
136 | ||
137 | /* | |
138 | * We used to try to deal with 64-bit BARs here, but don't any more. | |
139 | * There are many parts of this driver which would need to be modified | |
140 | * to handle a 64-bit base address, including scripts. I'm uncomfortable | |
141 | * with making those changes when I have no way of testing it, so I'm | |
142 | * just going to disable it. | |
143 | * | |
144 | * Note that some machines (eg HP rx8620 and Superdome) have bus addresses | |
145 | * below 4GB and physical addresses above 4GB. These will continue to work. | |
146 | */ | |
147 | static int __devinit | |
148 | pci_get_base_address(struct pci_dev *pdev, int index, unsigned long *basep) | |
149 | { | |
150 | u32 tmp; | |
151 | unsigned long base; | |
152 | #define PCI_BAR_OFFSET(index) (PCI_BASE_ADDRESS_0 + (index<<2)) | |
153 | ||
154 | pci_read_config_dword(pdev, PCI_BAR_OFFSET(index++), &tmp); | |
155 | base = tmp; | |
156 | if ((tmp & 0x7) == PCI_BASE_ADDRESS_MEM_TYPE_64) { | |
157 | pci_read_config_dword(pdev, PCI_BAR_OFFSET(index++), &tmp); | |
53222b90 | 158 | if (tmp > 0) { |
1da177e4 LT |
159 | dev_err(&pdev->dev, |
160 | "BAR %d is 64-bit, disabling\n", index - 1); | |
53222b90 MW |
161 | base = 0; |
162 | } | |
1da177e4 LT |
163 | } |
164 | ||
165 | if ((base & PCI_BASE_ADDRESS_SPACE) == PCI_BASE_ADDRESS_SPACE_IO) { | |
166 | base &= PCI_BASE_ADDRESS_IO_MASK; | |
167 | } else { | |
168 | base &= PCI_BASE_ADDRESS_MEM_MASK; | |
169 | } | |
170 | ||
171 | *basep = base; | |
172 | return index; | |
173 | #undef PCI_BAR_OFFSET | |
174 | } | |
175 | ||
176 | static struct scsi_transport_template *sym2_transport_template = NULL; | |
177 | ||
178 | /* | |
179 | * Used by the eh thread to wait for command completion. | |
180 | * It is allocated on the eh thread stack. | |
181 | */ | |
182 | struct sym_eh_wait { | |
183 | struct completion done; | |
184 | struct timer_list timer; | |
185 | void (*old_done)(struct scsi_cmnd *); | |
186 | int to_do; | |
187 | int timed_out; | |
188 | }; | |
189 | ||
190 | /* | |
191 | * Driver private area in the SCSI command structure. | |
192 | */ | |
193 | struct sym_ucmd { /* Override the SCSI pointer structure */ | |
194 | dma_addr_t data_mapping; | |
195 | u_char data_mapped; | |
196 | struct sym_eh_wait *eh_wait; | |
197 | }; | |
198 | ||
199 | #define SYM_UCMD_PTR(cmd) ((struct sym_ucmd *)(&(cmd)->SCp)) | |
200 | #define SYM_SOFTC_PTR(cmd) sym_get_hcb(cmd->device->host) | |
201 | ||
202 | static void __unmap_scsi_data(struct pci_dev *pdev, struct scsi_cmnd *cmd) | |
203 | { | |
204 | int dma_dir = cmd->sc_data_direction; | |
205 | ||
206 | switch(SYM_UCMD_PTR(cmd)->data_mapped) { | |
207 | case 2: | |
208 | pci_unmap_sg(pdev, cmd->buffer, cmd->use_sg, dma_dir); | |
209 | break; | |
210 | case 1: | |
211 | pci_unmap_single(pdev, SYM_UCMD_PTR(cmd)->data_mapping, | |
212 | cmd->request_bufflen, dma_dir); | |
213 | break; | |
214 | } | |
215 | SYM_UCMD_PTR(cmd)->data_mapped = 0; | |
216 | } | |
217 | ||
218 | static dma_addr_t __map_scsi_single_data(struct pci_dev *pdev, struct scsi_cmnd *cmd) | |
219 | { | |
220 | dma_addr_t mapping; | |
221 | int dma_dir = cmd->sc_data_direction; | |
222 | ||
223 | mapping = pci_map_single(pdev, cmd->request_buffer, | |
224 | cmd->request_bufflen, dma_dir); | |
225 | if (mapping) { | |
226 | SYM_UCMD_PTR(cmd)->data_mapped = 1; | |
227 | SYM_UCMD_PTR(cmd)->data_mapping = mapping; | |
228 | } | |
229 | ||
230 | return mapping; | |
231 | } | |
232 | ||
233 | static int __map_scsi_sg_data(struct pci_dev *pdev, struct scsi_cmnd *cmd) | |
234 | { | |
235 | int use_sg; | |
236 | int dma_dir = cmd->sc_data_direction; | |
237 | ||
238 | use_sg = pci_map_sg(pdev, cmd->buffer, cmd->use_sg, dma_dir); | |
239 | if (use_sg > 0) { | |
240 | SYM_UCMD_PTR(cmd)->data_mapped = 2; | |
241 | SYM_UCMD_PTR(cmd)->data_mapping = use_sg; | |
242 | } | |
243 | ||
244 | return use_sg; | |
245 | } | |
246 | ||
247 | #define unmap_scsi_data(np, cmd) \ | |
248 | __unmap_scsi_data(np->s.device, cmd) | |
249 | #define map_scsi_single_data(np, cmd) \ | |
250 | __map_scsi_single_data(np->s.device, cmd) | |
251 | #define map_scsi_sg_data(np, cmd) \ | |
252 | __map_scsi_sg_data(np->s.device, cmd) | |
253 | /* | |
254 | * Complete a pending CAM CCB. | |
255 | */ | |
256 | void sym_xpt_done(struct sym_hcb *np, struct scsi_cmnd *cmd) | |
257 | { | |
258 | unmap_scsi_data(np, cmd); | |
259 | cmd->scsi_done(cmd); | |
260 | } | |
261 | ||
262 | static void sym_xpt_done2(struct sym_hcb *np, struct scsi_cmnd *cmd, int cam_status) | |
263 | { | |
264 | sym_set_cam_status(cmd, cam_status); | |
265 | sym_xpt_done(np, cmd); | |
266 | } | |
267 | ||
268 | ||
269 | /* | |
270 | * Tell the SCSI layer about a BUS RESET. | |
271 | */ | |
272 | void sym_xpt_async_bus_reset(struct sym_hcb *np) | |
273 | { | |
274 | printf_notice("%s: SCSI BUS has been reset.\n", sym_name(np)); | |
275 | np->s.settle_time = jiffies + sym_driver_setup.settle_delay * HZ; | |
276 | np->s.settle_time_valid = 1; | |
277 | if (sym_verbose >= 2) | |
278 | printf_info("%s: command processing suspended for %d seconds\n", | |
279 | sym_name(np), sym_driver_setup.settle_delay); | |
280 | } | |
281 | ||
282 | /* | |
283 | * Tell the SCSI layer about a BUS DEVICE RESET message sent. | |
284 | */ | |
285 | void sym_xpt_async_sent_bdr(struct sym_hcb *np, int target) | |
286 | { | |
287 | printf_notice("%s: TARGET %d has been reset.\n", sym_name(np), target); | |
288 | } | |
289 | ||
290 | /* | |
291 | * Choose the more appropriate CAM status if | |
292 | * the IO encountered an extended error. | |
293 | */ | |
294 | static int sym_xerr_cam_status(int cam_status, int x_status) | |
295 | { | |
296 | if (x_status) { | |
297 | if (x_status & XE_PARITY_ERR) | |
298 | cam_status = DID_PARITY; | |
299 | else if (x_status &(XE_EXTRA_DATA|XE_SODL_UNRUN|XE_SWIDE_OVRUN)) | |
300 | cam_status = DID_ERROR; | |
301 | else if (x_status & XE_BAD_PHASE) | |
302 | cam_status = DID_ERROR; | |
303 | else | |
304 | cam_status = DID_ERROR; | |
305 | } | |
306 | return cam_status; | |
307 | } | |
308 | ||
309 | /* | |
310 | * Build CAM result for a failed or auto-sensed IO. | |
311 | */ | |
312 | void sym_set_cam_result_error(struct sym_hcb *np, struct sym_ccb *cp, int resid) | |
313 | { | |
314 | struct scsi_cmnd *cmd = cp->cmd; | |
315 | u_int cam_status, scsi_status, drv_status; | |
316 | ||
317 | drv_status = 0; | |
318 | cam_status = DID_OK; | |
319 | scsi_status = cp->ssss_status; | |
320 | ||
321 | if (cp->host_flags & HF_SENSE) { | |
322 | scsi_status = cp->sv_scsi_status; | |
323 | resid = cp->sv_resid; | |
324 | if (sym_verbose && cp->sv_xerr_status) | |
325 | sym_print_xerr(cmd, cp->sv_xerr_status); | |
326 | if (cp->host_status == HS_COMPLETE && | |
327 | cp->ssss_status == S_GOOD && | |
328 | cp->xerr_status == 0) { | |
329 | cam_status = sym_xerr_cam_status(DID_OK, | |
330 | cp->sv_xerr_status); | |
331 | drv_status = DRIVER_SENSE; | |
332 | /* | |
333 | * Bounce back the sense data to user. | |
334 | */ | |
335 | memset(&cmd->sense_buffer, 0, sizeof(cmd->sense_buffer)); | |
336 | memcpy(cmd->sense_buffer, cp->sns_bbuf, | |
337 | min(sizeof(cmd->sense_buffer), | |
338 | (size_t)SYM_SNS_BBUF_LEN)); | |
339 | #if 0 | |
340 | /* | |
341 | * If the device reports a UNIT ATTENTION condition | |
342 | * due to a RESET condition, we should consider all | |
343 | * disconnect CCBs for this unit as aborted. | |
344 | */ | |
345 | if (1) { | |
346 | u_char *p; | |
347 | p = (u_char *) cmd->sense_data; | |
348 | if (p[0]==0x70 && p[2]==0x6 && p[12]==0x29) | |
349 | sym_clear_tasks(np, DID_ABORT, | |
350 | cp->target,cp->lun, -1); | |
351 | } | |
352 | #endif | |
353 | } else { | |
354 | /* | |
355 | * Error return from our internal request sense. This | |
356 | * is bad: we must clear the contingent allegiance | |
357 | * condition otherwise the device will always return | |
358 | * BUSY. Use a big stick. | |
359 | */ | |
360 | sym_reset_scsi_target(np, cmd->device->id); | |
361 | cam_status = DID_ERROR; | |
362 | } | |
363 | } else if (cp->host_status == HS_COMPLETE) /* Bad SCSI status */ | |
364 | cam_status = DID_OK; | |
365 | else if (cp->host_status == HS_SEL_TIMEOUT) /* Selection timeout */ | |
366 | cam_status = DID_NO_CONNECT; | |
367 | else if (cp->host_status == HS_UNEXPECTED) /* Unexpected BUS FREE*/ | |
368 | cam_status = DID_ERROR; | |
369 | else { /* Extended error */ | |
370 | if (sym_verbose) { | |
371 | sym_print_addr(cmd, "COMMAND FAILED (%x %x %x).\n", | |
372 | cp->host_status, cp->ssss_status, | |
373 | cp->xerr_status); | |
374 | } | |
375 | /* | |
376 | * Set the most appropriate value for CAM status. | |
377 | */ | |
378 | cam_status = sym_xerr_cam_status(DID_ERROR, cp->xerr_status); | |
379 | } | |
380 | cmd->resid = resid; | |
381 | cmd->result = (drv_status << 24) + (cam_status << 16) + scsi_status; | |
382 | } | |
383 | ||
384 | ||
385 | /* | |
386 | * Build the scatter/gather array for an I/O. | |
387 | */ | |
388 | ||
389 | static int sym_scatter_no_sglist(struct sym_hcb *np, struct sym_ccb *cp, struct scsi_cmnd *cmd) | |
390 | { | |
391 | struct sym_tblmove *data = &cp->phys.data[SYM_CONF_MAX_SG-1]; | |
392 | int segment; | |
53222b90 | 393 | unsigned int len = cmd->request_bufflen; |
1da177e4 | 394 | |
53222b90 | 395 | if (len) { |
1da177e4 LT |
396 | dma_addr_t baddr = map_scsi_single_data(np, cmd); |
397 | if (baddr) { | |
53222b90 MW |
398 | if (len & 1) { |
399 | struct sym_tcb *tp = &np->target[cp->target]; | |
400 | if (tp->head.wval & EWS) { | |
401 | len++; | |
402 | cp->odd_byte_adjustment++; | |
403 | } | |
404 | } | |
405 | cp->data_len = len; | |
406 | sym_build_sge(np, data, baddr, len); | |
1da177e4 LT |
407 | segment = 1; |
408 | } else { | |
409 | segment = -2; | |
410 | } | |
411 | } else { | |
412 | segment = 0; | |
413 | } | |
414 | ||
415 | return segment; | |
416 | } | |
417 | ||
418 | static int sym_scatter(struct sym_hcb *np, struct sym_ccb *cp, struct scsi_cmnd *cmd) | |
419 | { | |
420 | int segment; | |
421 | int use_sg = (int) cmd->use_sg; | |
422 | ||
423 | cp->data_len = 0; | |
424 | ||
425 | if (!use_sg) | |
426 | segment = sym_scatter_no_sglist(np, cp, cmd); | |
427 | else if ((use_sg = map_scsi_sg_data(np, cmd)) > 0) { | |
428 | struct scatterlist *scatter = (struct scatterlist *)cmd->buffer; | |
53222b90 | 429 | struct sym_tcb *tp = &np->target[cp->target]; |
1da177e4 LT |
430 | struct sym_tblmove *data; |
431 | ||
432 | if (use_sg > SYM_CONF_MAX_SG) { | |
433 | unmap_scsi_data(np, cmd); | |
434 | return -1; | |
435 | } | |
436 | ||
437 | data = &cp->phys.data[SYM_CONF_MAX_SG - use_sg]; | |
438 | ||
439 | for (segment = 0; segment < use_sg; segment++) { | |
440 | dma_addr_t baddr = sg_dma_address(&scatter[segment]); | |
441 | unsigned int len = sg_dma_len(&scatter[segment]); | |
442 | ||
53222b90 MW |
443 | if ((len & 1) && (tp->head.wval & EWS)) { |
444 | len++; | |
445 | cp->odd_byte_adjustment++; | |
446 | } | |
447 | ||
1da177e4 LT |
448 | sym_build_sge(np, &data[segment], baddr, len); |
449 | cp->data_len += len; | |
450 | } | |
451 | } else { | |
452 | segment = -2; | |
453 | } | |
454 | ||
455 | return segment; | |
456 | } | |
457 | ||
458 | /* | |
459 | * Queue a SCSI command. | |
460 | */ | |
461 | static int sym_queue_command(struct sym_hcb *np, struct scsi_cmnd *cmd) | |
462 | { | |
463 | struct scsi_device *sdev = cmd->device; | |
464 | struct sym_tcb *tp; | |
465 | struct sym_lcb *lp; | |
466 | struct sym_ccb *cp; | |
467 | int order; | |
468 | ||
469 | /* | |
470 | * Minimal checkings, so that we will not | |
471 | * go outside our tables. | |
472 | */ | |
53222b90 MW |
473 | if (sdev->id == np->myaddr) { |
474 | sym_xpt_done2(np, cmd, DID_NO_CONNECT); | |
1da177e4 LT |
475 | return 0; |
476 | } | |
477 | ||
478 | /* | |
479 | * Retrieve the target descriptor. | |
480 | */ | |
481 | tp = &np->target[sdev->id]; | |
482 | ||
1da177e4 LT |
483 | /* |
484 | * Select tagged/untagged. | |
485 | */ | |
486 | lp = sym_lp(tp, sdev->lun); | |
487 | order = (lp && lp->s.reqtags) ? M_SIMPLE_TAG : 0; | |
488 | ||
489 | /* | |
490 | * Queue the SCSI IO. | |
491 | */ | |
492 | cp = sym_get_ccb(np, cmd, order); | |
493 | if (!cp) | |
494 | return 1; /* Means resource shortage */ | |
495 | sym_queue_scsiio(np, cmd, cp); | |
496 | return 0; | |
497 | } | |
498 | ||
499 | /* | |
500 | * Setup buffers and pointers that address the CDB. | |
501 | */ | |
502 | static inline int sym_setup_cdb(struct sym_hcb *np, struct scsi_cmnd *cmd, struct sym_ccb *cp) | |
503 | { | |
1da177e4 | 504 | memcpy(cp->cdb_buf, cmd->cmnd, cmd->cmd_len); |
1da177e4 | 505 | |
53222b90 MW |
506 | cp->phys.cmd.addr = CCB_BA(cp, cdb_buf[0]); |
507 | cp->phys.cmd.size = cpu_to_scr(cmd->cmd_len); | |
1da177e4 LT |
508 | |
509 | return 0; | |
510 | } | |
511 | ||
512 | /* | |
513 | * Setup pointers that address the data and start the I/O. | |
514 | */ | |
515 | int sym_setup_data_and_start(struct sym_hcb *np, struct scsi_cmnd *cmd, struct sym_ccb *cp) | |
516 | { | |
517 | int dir; | |
518 | struct sym_tcb *tp = &np->target[cp->target]; | |
519 | struct sym_lcb *lp = sym_lp(tp, cp->lun); | |
520 | ||
521 | /* | |
522 | * Build the CDB. | |
523 | */ | |
524 | if (sym_setup_cdb(np, cmd, cp)) | |
525 | goto out_abort; | |
526 | ||
527 | /* | |
528 | * No direction means no data. | |
529 | */ | |
530 | dir = cmd->sc_data_direction; | |
531 | if (dir != DMA_NONE) { | |
532 | cp->segments = sym_scatter(np, cp, cmd); | |
533 | if (cp->segments < 0) { | |
53222b90 | 534 | sym_set_cam_status(cmd, DID_ERROR); |
1da177e4 LT |
535 | goto out_abort; |
536 | } | |
537 | } else { | |
538 | cp->data_len = 0; | |
539 | cp->segments = 0; | |
540 | } | |
541 | ||
542 | /* | |
543 | * Set data pointers. | |
544 | */ | |
545 | sym_setup_data_pointers(np, cp, dir); | |
546 | ||
547 | /* | |
548 | * When `#ifed 1', the code below makes the driver | |
549 | * panic on the first attempt to write to a SCSI device. | |
550 | * It is the first test we want to do after a driver | |
551 | * change that does not seem obviously safe. :) | |
552 | */ | |
553 | #if 0 | |
554 | switch (cp->cdb_buf[0]) { | |
555 | case 0x0A: case 0x2A: case 0xAA: | |
556 | panic("XXXXXXXXXXXXX WRITE NOT YET ALLOWED XXXXXXXXXXXXXX\n"); | |
557 | break; | |
558 | default: | |
559 | break; | |
560 | } | |
561 | #endif | |
562 | ||
563 | /* | |
564 | * activate this job. | |
565 | */ | |
566 | if (lp) | |
567 | sym_start_next_ccbs(np, lp, 2); | |
568 | else | |
569 | sym_put_start_queue(np, cp); | |
570 | return 0; | |
571 | ||
572 | out_abort: | |
573 | sym_free_ccb(np, cp); | |
574 | sym_xpt_done(np, cmd); | |
575 | return 0; | |
576 | } | |
577 | ||
578 | ||
579 | /* | |
580 | * timer daemon. | |
581 | * | |
582 | * Misused to keep the driver running when | |
583 | * interrupts are not configured correctly. | |
584 | */ | |
585 | static void sym_timer(struct sym_hcb *np) | |
586 | { | |
587 | unsigned long thistime = jiffies; | |
588 | ||
589 | /* | |
590 | * Restart the timer. | |
591 | */ | |
592 | np->s.timer.expires = thistime + SYM_CONF_TIMER_INTERVAL; | |
593 | add_timer(&np->s.timer); | |
594 | ||
595 | /* | |
596 | * If we are resetting the ncr, wait for settle_time before | |
597 | * clearing it. Then command processing will be resumed. | |
598 | */ | |
599 | if (np->s.settle_time_valid) { | |
600 | if (time_before_eq(np->s.settle_time, thistime)) { | |
601 | if (sym_verbose >= 2 ) | |
602 | printk("%s: command processing resumed\n", | |
603 | sym_name(np)); | |
604 | np->s.settle_time_valid = 0; | |
605 | } | |
606 | return; | |
607 | } | |
608 | ||
609 | /* | |
610 | * Nothing to do for now, but that may come. | |
611 | */ | |
612 | if (np->s.lasttime + 4*HZ < thistime) { | |
613 | np->s.lasttime = thistime; | |
614 | } | |
615 | ||
616 | #ifdef SYM_CONF_PCIQ_MAY_MISS_COMPLETIONS | |
617 | /* | |
618 | * Some way-broken PCI bridges may lead to | |
619 | * completions being lost when the clearing | |
620 | * of the INTFLY flag by the CPU occurs | |
621 | * concurrently with the chip raising this flag. | |
622 | * If this ever happen, lost completions will | |
623 | * be reaped here. | |
624 | */ | |
625 | sym_wakeup_done(np); | |
626 | #endif | |
627 | } | |
628 | ||
629 | ||
630 | /* | |
631 | * PCI BUS error handler. | |
632 | */ | |
633 | void sym_log_bus_error(struct sym_hcb *np) | |
634 | { | |
635 | u_short pci_sts; | |
636 | pci_read_config_word(np->s.device, PCI_STATUS, &pci_sts); | |
637 | if (pci_sts & 0xf900) { | |
638 | pci_write_config_word(np->s.device, PCI_STATUS, pci_sts); | |
639 | printf("%s: PCI STATUS = 0x%04x\n", | |
640 | sym_name(np), pci_sts & 0xf900); | |
641 | } | |
642 | } | |
643 | ||
644 | /* | |
645 | * queuecommand method. Entered with the host adapter lock held and | |
646 | * interrupts disabled. | |
647 | */ | |
648 | static int sym53c8xx_queue_command(struct scsi_cmnd *cmd, | |
649 | void (*done)(struct scsi_cmnd *)) | |
650 | { | |
651 | struct sym_hcb *np = SYM_SOFTC_PTR(cmd); | |
652 | struct sym_ucmd *ucp = SYM_UCMD_PTR(cmd); | |
653 | int sts = 0; | |
654 | ||
655 | cmd->scsi_done = done; | |
656 | memset(ucp, 0, sizeof(*ucp)); | |
657 | ||
658 | /* | |
659 | * Shorten our settle_time if needed for | |
660 | * this command not to time out. | |
661 | */ | |
662 | if (np->s.settle_time_valid && cmd->timeout_per_command) { | |
663 | unsigned long tlimit = jiffies + cmd->timeout_per_command; | |
664 | tlimit -= SYM_CONF_TIMER_INTERVAL*2; | |
665 | if (time_after(np->s.settle_time, tlimit)) { | |
666 | np->s.settle_time = tlimit; | |
667 | } | |
668 | } | |
669 | ||
670 | if (np->s.settle_time_valid) | |
671 | return SCSI_MLQUEUE_HOST_BUSY; | |
672 | ||
673 | sts = sym_queue_command(np, cmd); | |
674 | if (sts) | |
675 | return SCSI_MLQUEUE_HOST_BUSY; | |
676 | return 0; | |
677 | } | |
678 | ||
679 | /* | |
680 | * Linux entry point of the interrupt handler. | |
681 | */ | |
682 | static irqreturn_t sym53c8xx_intr(int irq, void *dev_id, struct pt_regs * regs) | |
683 | { | |
684 | unsigned long flags; | |
685 | struct sym_hcb *np = (struct sym_hcb *)dev_id; | |
686 | ||
687 | if (DEBUG_FLAGS & DEBUG_TINY) printf_debug ("["); | |
688 | ||
689 | spin_lock_irqsave(np->s.host->host_lock, flags); | |
690 | sym_interrupt(np); | |
691 | spin_unlock_irqrestore(np->s.host->host_lock, flags); | |
692 | ||
693 | if (DEBUG_FLAGS & DEBUG_TINY) printf_debug ("]\n"); | |
694 | ||
695 | return IRQ_HANDLED; | |
696 | } | |
697 | ||
698 | /* | |
699 | * Linux entry point of the timer handler | |
700 | */ | |
701 | static void sym53c8xx_timer(unsigned long npref) | |
702 | { | |
703 | struct sym_hcb *np = (struct sym_hcb *)npref; | |
704 | unsigned long flags; | |
705 | ||
706 | spin_lock_irqsave(np->s.host->host_lock, flags); | |
707 | sym_timer(np); | |
708 | spin_unlock_irqrestore(np->s.host->host_lock, flags); | |
709 | } | |
710 | ||
711 | ||
712 | /* | |
713 | * What the eh thread wants us to perform. | |
714 | */ | |
715 | #define SYM_EH_ABORT 0 | |
716 | #define SYM_EH_DEVICE_RESET 1 | |
717 | #define SYM_EH_BUS_RESET 2 | |
718 | #define SYM_EH_HOST_RESET 3 | |
719 | ||
720 | /* | |
721 | * What we will do regarding the involved SCSI command. | |
722 | */ | |
723 | #define SYM_EH_DO_IGNORE 0 | |
724 | #define SYM_EH_DO_COMPLETE 1 | |
725 | #define SYM_EH_DO_WAIT 2 | |
726 | ||
727 | /* | |
728 | * Our general completion handler. | |
729 | */ | |
730 | static void __sym_eh_done(struct scsi_cmnd *cmd, int timed_out) | |
731 | { | |
732 | struct sym_eh_wait *ep = SYM_UCMD_PTR(cmd)->eh_wait; | |
733 | if (!ep) | |
734 | return; | |
735 | ||
736 | /* Try to avoid a race here (not 100% safe) */ | |
737 | if (!timed_out) { | |
738 | ep->timed_out = 0; | |
739 | if (ep->to_do == SYM_EH_DO_WAIT && !del_timer(&ep->timer)) | |
740 | return; | |
741 | } | |
742 | ||
743 | /* Revert everything */ | |
744 | SYM_UCMD_PTR(cmd)->eh_wait = NULL; | |
745 | cmd->scsi_done = ep->old_done; | |
746 | ||
747 | /* Wake up the eh thread if it wants to sleep */ | |
748 | if (ep->to_do == SYM_EH_DO_WAIT) | |
749 | complete(&ep->done); | |
750 | } | |
751 | ||
752 | /* | |
753 | * scsi_done() alias when error recovery is in progress. | |
754 | */ | |
755 | static void sym_eh_done(struct scsi_cmnd *cmd) { __sym_eh_done(cmd, 0); } | |
756 | ||
757 | /* | |
758 | * Some timeout handler to avoid waiting too long. | |
759 | */ | |
760 | static void sym_eh_timeout(u_long p) { __sym_eh_done((struct scsi_cmnd *)p, 1); } | |
761 | ||
762 | /* | |
763 | * Generic method for our eh processing. | |
764 | * The 'op' argument tells what we have to do. | |
765 | */ | |
766 | static int sym_eh_handler(int op, char *opname, struct scsi_cmnd *cmd) | |
767 | { | |
768 | struct sym_hcb *np = SYM_SOFTC_PTR(cmd); | |
769 | SYM_QUEHEAD *qp; | |
770 | int to_do = SYM_EH_DO_IGNORE; | |
771 | int sts = -1; | |
772 | struct sym_eh_wait eh, *ep = &eh; | |
773 | ||
774 | dev_warn(&cmd->device->sdev_gendev, "%s operation started.\n", opname); | |
775 | ||
1da177e4 LT |
776 | /* This one is queued in some place -> to wait for completion */ |
777 | FOR_EACH_QUEUED_ELEMENT(&np->busy_ccbq, qp) { | |
778 | struct sym_ccb *cp = sym_que_entry(qp, struct sym_ccb, link_ccbq); | |
779 | if (cp->cmd == cmd) { | |
780 | to_do = SYM_EH_DO_WAIT; | |
781 | goto prepare; | |
782 | } | |
783 | } | |
784 | ||
785 | prepare: | |
786 | /* Prepare stuff to either ignore, complete or wait for completion */ | |
787 | switch(to_do) { | |
788 | default: | |
789 | case SYM_EH_DO_IGNORE: | |
790 | break; | |
791 | case SYM_EH_DO_WAIT: | |
792 | init_completion(&ep->done); | |
793 | /* fall through */ | |
794 | case SYM_EH_DO_COMPLETE: | |
795 | ep->old_done = cmd->scsi_done; | |
796 | cmd->scsi_done = sym_eh_done; | |
797 | SYM_UCMD_PTR(cmd)->eh_wait = ep; | |
798 | } | |
799 | ||
800 | /* Try to proceed the operation we have been asked for */ | |
801 | sts = -1; | |
802 | switch(op) { | |
803 | case SYM_EH_ABORT: | |
804 | sts = sym_abort_scsiio(np, cmd, 1); | |
805 | break; | |
806 | case SYM_EH_DEVICE_RESET: | |
807 | sts = sym_reset_scsi_target(np, cmd->device->id); | |
808 | break; | |
809 | case SYM_EH_BUS_RESET: | |
810 | sym_reset_scsi_bus(np, 1); | |
811 | sts = 0; | |
812 | break; | |
813 | case SYM_EH_HOST_RESET: | |
814 | sym_reset_scsi_bus(np, 0); | |
815 | sym_start_up (np, 1); | |
816 | sts = 0; | |
817 | break; | |
818 | default: | |
819 | break; | |
820 | } | |
821 | ||
822 | /* On error, restore everything and cross fingers :) */ | |
823 | if (sts) { | |
824 | SYM_UCMD_PTR(cmd)->eh_wait = NULL; | |
825 | cmd->scsi_done = ep->old_done; | |
826 | to_do = SYM_EH_DO_IGNORE; | |
827 | } | |
828 | ||
829 | ep->to_do = to_do; | |
830 | /* Complete the command with locks held as required by the driver */ | |
831 | if (to_do == SYM_EH_DO_COMPLETE) | |
53222b90 | 832 | sym_xpt_done2(np, cmd, DID_ABORT); |
1da177e4 LT |
833 | |
834 | /* Wait for completion with locks released, as required by kernel */ | |
835 | if (to_do == SYM_EH_DO_WAIT) { | |
836 | init_timer(&ep->timer); | |
837 | ep->timer.expires = jiffies + (5*HZ); | |
838 | ep->timer.function = sym_eh_timeout; | |
839 | ep->timer.data = (u_long)cmd; | |
840 | ep->timed_out = 1; /* Be pessimistic for once :) */ | |
841 | add_timer(&ep->timer); | |
842 | spin_unlock_irq(np->s.host->host_lock); | |
843 | wait_for_completion(&ep->done); | |
844 | spin_lock_irq(np->s.host->host_lock); | |
845 | if (ep->timed_out) | |
846 | sts = -2; | |
847 | } | |
848 | dev_warn(&cmd->device->sdev_gendev, "%s operation %s.\n", opname, | |
849 | sts==0 ? "complete" :sts==-2 ? "timed-out" : "failed"); | |
850 | return sts ? SCSI_FAILED : SCSI_SUCCESS; | |
851 | } | |
852 | ||
853 | ||
854 | /* | |
855 | * Error handlers called from the eh thread (one thread per HBA). | |
856 | */ | |
857 | static int sym53c8xx_eh_abort_handler(struct scsi_cmnd *cmd) | |
858 | { | |
8fa728a2 JG |
859 | int rc; |
860 | ||
861 | spin_lock_irq(cmd->device->host->host_lock); | |
862 | rc = sym_eh_handler(SYM_EH_ABORT, "ABORT", cmd); | |
863 | spin_unlock_irq(cmd->device->host->host_lock); | |
864 | ||
865 | return rc; | |
1da177e4 LT |
866 | } |
867 | ||
868 | static int sym53c8xx_eh_device_reset_handler(struct scsi_cmnd *cmd) | |
869 | { | |
870 | return sym_eh_handler(SYM_EH_DEVICE_RESET, "DEVICE RESET", cmd); | |
871 | } | |
872 | ||
873 | static int sym53c8xx_eh_bus_reset_handler(struct scsi_cmnd *cmd) | |
874 | { | |
875 | return sym_eh_handler(SYM_EH_BUS_RESET, "BUS RESET", cmd); | |
876 | } | |
877 | ||
878 | static int sym53c8xx_eh_host_reset_handler(struct scsi_cmnd *cmd) | |
879 | { | |
880 | return sym_eh_handler(SYM_EH_HOST_RESET, "HOST RESET", cmd); | |
881 | } | |
882 | ||
883 | /* | |
884 | * Tune device queuing depth, according to various limits. | |
885 | */ | |
886 | static void sym_tune_dev_queuing(struct sym_tcb *tp, int lun, u_short reqtags) | |
887 | { | |
888 | struct sym_lcb *lp = sym_lp(tp, lun); | |
889 | u_short oldtags; | |
890 | ||
891 | if (!lp) | |
892 | return; | |
893 | ||
894 | oldtags = lp->s.reqtags; | |
895 | ||
896 | if (reqtags > lp->s.scdev_depth) | |
897 | reqtags = lp->s.scdev_depth; | |
898 | ||
899 | lp->started_limit = reqtags ? reqtags : 2; | |
900 | lp->started_max = 1; | |
901 | lp->s.reqtags = reqtags; | |
902 | ||
903 | if (reqtags != oldtags) { | |
53222b90 | 904 | dev_info(&tp->starget->dev, |
1da177e4 LT |
905 | "tagged command queuing %s, command queue depth %d.\n", |
906 | lp->s.reqtags ? "enabled" : "disabled", | |
907 | lp->started_limit); | |
908 | } | |
909 | } | |
910 | ||
911 | /* | |
912 | * Linux select queue depths function | |
913 | */ | |
914 | #define DEF_DEPTH (sym_driver_setup.max_tag) | |
915 | #define ALL_TARGETS -2 | |
916 | #define NO_TARGET -1 | |
917 | #define ALL_LUNS -2 | |
918 | #define NO_LUN -1 | |
919 | ||
920 | static int device_queue_depth(struct sym_hcb *np, int target, int lun) | |
921 | { | |
922 | int c, h, t, u, v; | |
923 | char *p = sym_driver_setup.tag_ctrl; | |
924 | char *ep; | |
925 | ||
926 | h = -1; | |
927 | t = NO_TARGET; | |
928 | u = NO_LUN; | |
929 | while ((c = *p++) != 0) { | |
930 | v = simple_strtoul(p, &ep, 0); | |
931 | switch(c) { | |
932 | case '/': | |
933 | ++h; | |
934 | t = ALL_TARGETS; | |
935 | u = ALL_LUNS; | |
936 | break; | |
937 | case 't': | |
938 | if (t != target) | |
939 | t = (target == v) ? v : NO_TARGET; | |
940 | u = ALL_LUNS; | |
941 | break; | |
942 | case 'u': | |
943 | if (u != lun) | |
944 | u = (lun == v) ? v : NO_LUN; | |
945 | break; | |
946 | case 'q': | |
947 | if (h == np->s.unit && | |
948 | (t == ALL_TARGETS || t == target) && | |
949 | (u == ALL_LUNS || u == lun)) | |
950 | return v; | |
951 | break; | |
952 | case '-': | |
953 | t = ALL_TARGETS; | |
954 | u = ALL_LUNS; | |
955 | break; | |
956 | default: | |
957 | break; | |
958 | } | |
959 | p = ep; | |
960 | } | |
961 | return DEF_DEPTH; | |
962 | } | |
963 | ||
53222b90 | 964 | static int sym53c8xx_slave_alloc(struct scsi_device *sdev) |
1da177e4 | 965 | { |
53222b90 MW |
966 | struct sym_hcb *np; |
967 | struct sym_tcb *tp; | |
1da177e4 | 968 | |
53222b90 MW |
969 | if (sdev->id >= SYM_CONF_MAX_TARGET || sdev->lun >= SYM_CONF_MAX_LUN) |
970 | return -ENXIO; | |
1da177e4 | 971 | |
53222b90 MW |
972 | np = sym_get_hcb(sdev->host); |
973 | tp = &np->target[sdev->id]; | |
974 | ||
975 | /* | |
976 | * Fail the device init if the device is flagged NOSCAN at BOOT in | |
977 | * the NVRAM. This may speed up boot and maintain coherency with | |
978 | * BIOS device numbering. Clearing the flag allows the user to | |
979 | * rescan skipped devices later. We also return an error for | |
980 | * devices not flagged for SCAN LUNS in the NVRAM since some single | |
981 | * lun devices behave badly when asked for a non zero LUN. | |
982 | */ | |
983 | ||
984 | if ((tp->usrflags & SYM_SCAN_BOOT_DISABLED) || | |
985 | ((tp->usrflags & SYM_SCAN_LUNS_DISABLED) && sdev->lun != 0)) { | |
986 | tp->usrflags &= ~SYM_SCAN_BOOT_DISABLED; | |
987 | return -ENXIO; | |
988 | } | |
989 | ||
990 | tp->starget = sdev->sdev_target; | |
991 | return 0; | |
1da177e4 LT |
992 | } |
993 | ||
994 | /* | |
995 | * Linux entry point for device queue sizing. | |
996 | */ | |
997 | static int sym53c8xx_slave_configure(struct scsi_device *device) | |
998 | { | |
999 | struct sym_hcb *np = sym_get_hcb(device->host); | |
1000 | struct sym_tcb *tp = &np->target[device->id]; | |
1001 | struct sym_lcb *lp; | |
1002 | int reqtags, depth_to_use; | |
1003 | ||
1004 | /* | |
1005 | * Allocate the LCB if not yet. | |
1006 | * If it fail, we may well be in the sh*t. :) | |
1007 | */ | |
1008 | lp = sym_alloc_lcb(np, device->id, device->lun); | |
1009 | if (!lp) | |
1010 | return -ENOMEM; | |
1011 | ||
1012 | /* | |
1013 | * Get user flags. | |
1014 | */ | |
1015 | lp->curr_flags = lp->user_flags; | |
1016 | ||
1017 | /* | |
1018 | * Select queue depth from driver setup. | |
1019 | * Donnot use more than configured by user. | |
1020 | * Use at least 2. | |
1021 | * Donnot use more than our maximum. | |
1022 | */ | |
1023 | reqtags = device_queue_depth(np, device->id, device->lun); | |
1024 | if (reqtags > tp->usrtags) | |
1025 | reqtags = tp->usrtags; | |
1026 | if (!device->tagged_supported) | |
1027 | reqtags = 0; | |
1028 | #if 1 /* Avoid to locally queue commands for no good reasons */ | |
1029 | if (reqtags > SYM_CONF_MAX_TAG) | |
1030 | reqtags = SYM_CONF_MAX_TAG; | |
1031 | depth_to_use = (reqtags ? reqtags : 2); | |
1032 | #else | |
1033 | depth_to_use = (reqtags ? SYM_CONF_MAX_TAG : 2); | |
1034 | #endif | |
1035 | scsi_adjust_queue_depth(device, | |
1036 | (device->tagged_supported ? | |
1037 | MSG_SIMPLE_TAG : 0), | |
1038 | depth_to_use); | |
1039 | lp->s.scdev_depth = depth_to_use; | |
1040 | sym_tune_dev_queuing(tp, device->lun, reqtags); | |
1041 | ||
1042 | if (!spi_initial_dv(device->sdev_target)) | |
1043 | spi_dv_device(device); | |
1044 | ||
1045 | return 0; | |
1046 | } | |
1047 | ||
1048 | /* | |
1049 | * Linux entry point for info() function | |
1050 | */ | |
1051 | static const char *sym53c8xx_info (struct Scsi_Host *host) | |
1052 | { | |
1053 | return SYM_DRIVER_NAME; | |
1054 | } | |
1055 | ||
1056 | ||
1057 | #ifdef SYM_LINUX_PROC_INFO_SUPPORT | |
1058 | /* | |
1059 | * Proc file system stuff | |
1060 | * | |
1061 | * A read operation returns adapter information. | |
1062 | * A write operation is a control command. | |
1063 | * The string is parsed in the driver code and the command is passed | |
1064 | * to the sym_usercmd() function. | |
1065 | */ | |
1066 | ||
1067 | #ifdef SYM_LINUX_USER_COMMAND_SUPPORT | |
1068 | ||
1069 | struct sym_usrcmd { | |
1070 | u_long target; | |
1071 | u_long lun; | |
1072 | u_long data; | |
1073 | u_long cmd; | |
1074 | }; | |
1075 | ||
1076 | #define UC_SETSYNC 10 | |
1077 | #define UC_SETTAGS 11 | |
1078 | #define UC_SETDEBUG 12 | |
1079 | #define UC_SETWIDE 14 | |
1080 | #define UC_SETFLAG 15 | |
1081 | #define UC_SETVERBOSE 17 | |
1082 | #define UC_RESETDEV 18 | |
1083 | #define UC_CLEARDEV 19 | |
1084 | ||
1085 | static void sym_exec_user_command (struct sym_hcb *np, struct sym_usrcmd *uc) | |
1086 | { | |
1087 | struct sym_tcb *tp; | |
1088 | int t, l; | |
1089 | ||
1090 | switch (uc->cmd) { | |
1091 | case 0: return; | |
1092 | ||
1093 | #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT | |
1094 | case UC_SETDEBUG: | |
1095 | sym_debug_flags = uc->data; | |
1096 | break; | |
1097 | #endif | |
1098 | case UC_SETVERBOSE: | |
1099 | np->verbose = uc->data; | |
1100 | break; | |
1101 | default: | |
1102 | /* | |
1103 | * We assume that other commands apply to targets. | |
1104 | * This should always be the case and avoid the below | |
1105 | * 4 lines to be repeated 6 times. | |
1106 | */ | |
1107 | for (t = 0; t < SYM_CONF_MAX_TARGET; t++) { | |
1108 | if (!((uc->target >> t) & 1)) | |
1109 | continue; | |
1110 | tp = &np->target[t]; | |
1111 | ||
1112 | switch (uc->cmd) { | |
1113 | ||
1114 | case UC_SETSYNC: | |
1115 | if (!uc->data || uc->data >= 255) { | |
1116 | tp->tgoal.iu = tp->tgoal.dt = | |
1117 | tp->tgoal.qas = 0; | |
1118 | tp->tgoal.offset = 0; | |
1119 | } else if (uc->data <= 9 && np->minsync_dt) { | |
1120 | if (uc->data < np->minsync_dt) | |
1121 | uc->data = np->minsync_dt; | |
1122 | tp->tgoal.iu = tp->tgoal.dt = | |
1123 | tp->tgoal.qas = 1; | |
1124 | tp->tgoal.width = 1; | |
1125 | tp->tgoal.period = uc->data; | |
1126 | tp->tgoal.offset = np->maxoffs_dt; | |
1127 | } else { | |
1128 | if (uc->data < np->minsync) | |
1129 | uc->data = np->minsync; | |
1130 | tp->tgoal.iu = tp->tgoal.dt = | |
1131 | tp->tgoal.qas = 0; | |
1132 | tp->tgoal.period = uc->data; | |
1133 | tp->tgoal.offset = np->maxoffs; | |
1134 | } | |
1135 | tp->tgoal.check_nego = 1; | |
1136 | break; | |
1137 | case UC_SETWIDE: | |
1138 | tp->tgoal.width = uc->data ? 1 : 0; | |
1139 | tp->tgoal.check_nego = 1; | |
1140 | break; | |
1141 | case UC_SETTAGS: | |
1142 | for (l = 0; l < SYM_CONF_MAX_LUN; l++) | |
1143 | sym_tune_dev_queuing(tp, l, uc->data); | |
1144 | break; | |
1145 | case UC_RESETDEV: | |
1146 | tp->to_reset = 1; | |
1147 | np->istat_sem = SEM; | |
1148 | OUTB(np, nc_istat, SIGP|SEM); | |
1149 | break; | |
1150 | case UC_CLEARDEV: | |
1151 | for (l = 0; l < SYM_CONF_MAX_LUN; l++) { | |
1152 | struct sym_lcb *lp = sym_lp(tp, l); | |
1153 | if (lp) lp->to_clear = 1; | |
1154 | } | |
1155 | np->istat_sem = SEM; | |
1156 | OUTB(np, nc_istat, SIGP|SEM); | |
1157 | break; | |
1158 | case UC_SETFLAG: | |
1159 | tp->usrflags = uc->data; | |
1160 | break; | |
1161 | } | |
1162 | } | |
1163 | break; | |
1164 | } | |
1165 | } | |
1166 | ||
1167 | static int skip_spaces(char *ptr, int len) | |
1168 | { | |
1169 | int cnt, c; | |
1170 | ||
1171 | for (cnt = len; cnt > 0 && (c = *ptr++) && isspace(c); cnt--); | |
1172 | ||
1173 | return (len - cnt); | |
1174 | } | |
1175 | ||
1176 | static int get_int_arg(char *ptr, int len, u_long *pv) | |
1177 | { | |
1178 | char *end; | |
1179 | ||
1180 | *pv = simple_strtoul(ptr, &end, 10); | |
1181 | return (end - ptr); | |
1182 | } | |
1183 | ||
1184 | static int is_keyword(char *ptr, int len, char *verb) | |
1185 | { | |
1186 | int verb_len = strlen(verb); | |
1187 | ||
1188 | if (len >= verb_len && !memcmp(verb, ptr, verb_len)) | |
1189 | return verb_len; | |
1190 | else | |
1191 | return 0; | |
1192 | } | |
1193 | ||
1194 | #define SKIP_SPACES(ptr, len) \ | |
1195 | if ((arg_len = skip_spaces(ptr, len)) < 1) \ | |
1196 | return -EINVAL; \ | |
1197 | ptr += arg_len; len -= arg_len; | |
1198 | ||
1199 | #define GET_INT_ARG(ptr, len, v) \ | |
1200 | if (!(arg_len = get_int_arg(ptr, len, &(v)))) \ | |
1201 | return -EINVAL; \ | |
1202 | ptr += arg_len; len -= arg_len; | |
1203 | ||
1204 | ||
1205 | /* | |
1206 | * Parse a control command | |
1207 | */ | |
1208 | ||
1209 | static int sym_user_command(struct sym_hcb *np, char *buffer, int length) | |
1210 | { | |
1211 | char *ptr = buffer; | |
1212 | int len = length; | |
1213 | struct sym_usrcmd cmd, *uc = &cmd; | |
1214 | int arg_len; | |
1215 | u_long target; | |
1216 | ||
1217 | memset(uc, 0, sizeof(*uc)); | |
1218 | ||
1219 | if (len > 0 && ptr[len-1] == '\n') | |
1220 | --len; | |
1221 | ||
1222 | if ((arg_len = is_keyword(ptr, len, "setsync")) != 0) | |
1223 | uc->cmd = UC_SETSYNC; | |
1224 | else if ((arg_len = is_keyword(ptr, len, "settags")) != 0) | |
1225 | uc->cmd = UC_SETTAGS; | |
1226 | else if ((arg_len = is_keyword(ptr, len, "setverbose")) != 0) | |
1227 | uc->cmd = UC_SETVERBOSE; | |
1228 | else if ((arg_len = is_keyword(ptr, len, "setwide")) != 0) | |
1229 | uc->cmd = UC_SETWIDE; | |
1230 | #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT | |
1231 | else if ((arg_len = is_keyword(ptr, len, "setdebug")) != 0) | |
1232 | uc->cmd = UC_SETDEBUG; | |
1233 | #endif | |
1234 | else if ((arg_len = is_keyword(ptr, len, "setflag")) != 0) | |
1235 | uc->cmd = UC_SETFLAG; | |
1236 | else if ((arg_len = is_keyword(ptr, len, "resetdev")) != 0) | |
1237 | uc->cmd = UC_RESETDEV; | |
1238 | else if ((arg_len = is_keyword(ptr, len, "cleardev")) != 0) | |
1239 | uc->cmd = UC_CLEARDEV; | |
1240 | else | |
1241 | arg_len = 0; | |
1242 | ||
1243 | #ifdef DEBUG_PROC_INFO | |
1244 | printk("sym_user_command: arg_len=%d, cmd=%ld\n", arg_len, uc->cmd); | |
1245 | #endif | |
1246 | ||
1247 | if (!arg_len) | |
1248 | return -EINVAL; | |
1249 | ptr += arg_len; len -= arg_len; | |
1250 | ||
1251 | switch(uc->cmd) { | |
1252 | case UC_SETSYNC: | |
1253 | case UC_SETTAGS: | |
1254 | case UC_SETWIDE: | |
1255 | case UC_SETFLAG: | |
1256 | case UC_RESETDEV: | |
1257 | case UC_CLEARDEV: | |
1258 | SKIP_SPACES(ptr, len); | |
1259 | if ((arg_len = is_keyword(ptr, len, "all")) != 0) { | |
1260 | ptr += arg_len; len -= arg_len; | |
1261 | uc->target = ~0; | |
1262 | } else { | |
1263 | GET_INT_ARG(ptr, len, target); | |
1264 | uc->target = (1<<target); | |
1265 | #ifdef DEBUG_PROC_INFO | |
1266 | printk("sym_user_command: target=%ld\n", target); | |
1267 | #endif | |
1268 | } | |
1269 | break; | |
1270 | } | |
1271 | ||
1272 | switch(uc->cmd) { | |
1273 | case UC_SETVERBOSE: | |
1274 | case UC_SETSYNC: | |
1275 | case UC_SETTAGS: | |
1276 | case UC_SETWIDE: | |
1277 | SKIP_SPACES(ptr, len); | |
1278 | GET_INT_ARG(ptr, len, uc->data); | |
1279 | #ifdef DEBUG_PROC_INFO | |
1280 | printk("sym_user_command: data=%ld\n", uc->data); | |
1281 | #endif | |
1282 | break; | |
1283 | #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT | |
1284 | case UC_SETDEBUG: | |
1285 | while (len > 0) { | |
1286 | SKIP_SPACES(ptr, len); | |
1287 | if ((arg_len = is_keyword(ptr, len, "alloc"))) | |
1288 | uc->data |= DEBUG_ALLOC; | |
1289 | else if ((arg_len = is_keyword(ptr, len, "phase"))) | |
1290 | uc->data |= DEBUG_PHASE; | |
1291 | else if ((arg_len = is_keyword(ptr, len, "queue"))) | |
1292 | uc->data |= DEBUG_QUEUE; | |
1293 | else if ((arg_len = is_keyword(ptr, len, "result"))) | |
1294 | uc->data |= DEBUG_RESULT; | |
1295 | else if ((arg_len = is_keyword(ptr, len, "scatter"))) | |
1296 | uc->data |= DEBUG_SCATTER; | |
1297 | else if ((arg_len = is_keyword(ptr, len, "script"))) | |
1298 | uc->data |= DEBUG_SCRIPT; | |
1299 | else if ((arg_len = is_keyword(ptr, len, "tiny"))) | |
1300 | uc->data |= DEBUG_TINY; | |
1301 | else if ((arg_len = is_keyword(ptr, len, "timing"))) | |
1302 | uc->data |= DEBUG_TIMING; | |
1303 | else if ((arg_len = is_keyword(ptr, len, "nego"))) | |
1304 | uc->data |= DEBUG_NEGO; | |
1305 | else if ((arg_len = is_keyword(ptr, len, "tags"))) | |
1306 | uc->data |= DEBUG_TAGS; | |
1307 | else if ((arg_len = is_keyword(ptr, len, "pointer"))) | |
1308 | uc->data |= DEBUG_POINTER; | |
1309 | else | |
1310 | return -EINVAL; | |
1311 | ptr += arg_len; len -= arg_len; | |
1312 | } | |
1313 | #ifdef DEBUG_PROC_INFO | |
1314 | printk("sym_user_command: data=%ld\n", uc->data); | |
1315 | #endif | |
1316 | break; | |
1317 | #endif /* SYM_LINUX_DEBUG_CONTROL_SUPPORT */ | |
1318 | case UC_SETFLAG: | |
1319 | while (len > 0) { | |
1320 | SKIP_SPACES(ptr, len); | |
1321 | if ((arg_len = is_keyword(ptr, len, "no_disc"))) | |
1322 | uc->data &= ~SYM_DISC_ENABLED; | |
1323 | else | |
1324 | return -EINVAL; | |
1325 | ptr += arg_len; len -= arg_len; | |
1326 | } | |
1327 | break; | |
1328 | default: | |
1329 | break; | |
1330 | } | |
1331 | ||
1332 | if (len) | |
1333 | return -EINVAL; | |
1334 | else { | |
1335 | unsigned long flags; | |
1336 | ||
1337 | spin_lock_irqsave(np->s.host->host_lock, flags); | |
1338 | sym_exec_user_command (np, uc); | |
1339 | spin_unlock_irqrestore(np->s.host->host_lock, flags); | |
1340 | } | |
1341 | return length; | |
1342 | } | |
1343 | ||
1344 | #endif /* SYM_LINUX_USER_COMMAND_SUPPORT */ | |
1345 | ||
1346 | ||
1347 | #ifdef SYM_LINUX_USER_INFO_SUPPORT | |
1348 | /* | |
1349 | * Informations through the proc file system. | |
1350 | */ | |
1351 | struct info_str { | |
1352 | char *buffer; | |
1353 | int length; | |
1354 | int offset; | |
1355 | int pos; | |
1356 | }; | |
1357 | ||
1358 | static void copy_mem_info(struct info_str *info, char *data, int len) | |
1359 | { | |
1360 | if (info->pos + len > info->length) | |
1361 | len = info->length - info->pos; | |
1362 | ||
1363 | if (info->pos + len < info->offset) { | |
1364 | info->pos += len; | |
1365 | return; | |
1366 | } | |
1367 | if (info->pos < info->offset) { | |
1368 | data += (info->offset - info->pos); | |
1369 | len -= (info->offset - info->pos); | |
1370 | } | |
1371 | ||
1372 | if (len > 0) { | |
1373 | memcpy(info->buffer + info->pos, data, len); | |
1374 | info->pos += len; | |
1375 | } | |
1376 | } | |
1377 | ||
1378 | static int copy_info(struct info_str *info, char *fmt, ...) | |
1379 | { | |
1380 | va_list args; | |
1381 | char buf[81]; | |
1382 | int len; | |
1383 | ||
1384 | va_start(args, fmt); | |
1385 | len = vsprintf(buf, fmt, args); | |
1386 | va_end(args); | |
1387 | ||
1388 | copy_mem_info(info, buf, len); | |
1389 | return len; | |
1390 | } | |
1391 | ||
1392 | /* | |
1393 | * Copy formatted information into the input buffer. | |
1394 | */ | |
1395 | static int sym_host_info(struct sym_hcb *np, char *ptr, off_t offset, int len) | |
1396 | { | |
1397 | struct info_str info; | |
1398 | ||
1399 | info.buffer = ptr; | |
1400 | info.length = len; | |
1401 | info.offset = offset; | |
1402 | info.pos = 0; | |
1403 | ||
1404 | copy_info(&info, "Chip " NAME53C "%s, device id 0x%x, " | |
1405 | "revision id 0x%x\n", | |
1406 | np->s.chip_name, np->device_id, np->revision_id); | |
1407 | copy_info(&info, "At PCI address %s, IRQ " IRQ_FMT "\n", | |
1408 | pci_name(np->s.device), IRQ_PRM(np->s.irq)); | |
1409 | copy_info(&info, "Min. period factor %d, %s SCSI BUS%s\n", | |
1410 | (int) (np->minsync_dt ? np->minsync_dt : np->minsync), | |
1411 | np->maxwide ? "Wide" : "Narrow", | |
1412 | np->minsync_dt ? ", DT capable" : ""); | |
1413 | ||
1414 | copy_info(&info, "Max. started commands %d, " | |
1415 | "max. commands per LUN %d\n", | |
1416 | SYM_CONF_MAX_START, SYM_CONF_MAX_TAG); | |
1417 | ||
1418 | return info.pos > info.offset? info.pos - info.offset : 0; | |
1419 | } | |
1420 | #endif /* SYM_LINUX_USER_INFO_SUPPORT */ | |
1421 | ||
1422 | /* | |
1423 | * Entry point of the scsi proc fs of the driver. | |
1424 | * - func = 0 means read (returns adapter infos) | |
1425 | * - func = 1 means write (not yet merget from sym53c8xx) | |
1426 | */ | |
1427 | static int sym53c8xx_proc_info(struct Scsi_Host *host, char *buffer, | |
1428 | char **start, off_t offset, int length, int func) | |
1429 | { | |
1430 | struct sym_hcb *np = sym_get_hcb(host); | |
1431 | int retv; | |
1432 | ||
1433 | if (func) { | |
1434 | #ifdef SYM_LINUX_USER_COMMAND_SUPPORT | |
1435 | retv = sym_user_command(np, buffer, length); | |
1436 | #else | |
1437 | retv = -EINVAL; | |
1438 | #endif | |
1439 | } else { | |
1440 | if (start) | |
1441 | *start = buffer; | |
1442 | #ifdef SYM_LINUX_USER_INFO_SUPPORT | |
1443 | retv = sym_host_info(np, buffer, offset, length); | |
1444 | #else | |
1445 | retv = -EINVAL; | |
1446 | #endif | |
1447 | } | |
1448 | ||
1449 | return retv; | |
1450 | } | |
1451 | #endif /* SYM_LINUX_PROC_INFO_SUPPORT */ | |
1452 | ||
1453 | /* | |
1454 | * Free controller resources. | |
1455 | */ | |
1456 | static void sym_free_resources(struct sym_hcb *np, struct pci_dev *pdev) | |
1457 | { | |
1458 | /* | |
1459 | * Free O/S specific resources. | |
1460 | */ | |
1461 | if (np->s.irq) | |
1462 | free_irq(np->s.irq, np); | |
1463 | if (np->s.ioaddr) | |
1464 | pci_iounmap(pdev, np->s.ioaddr); | |
1465 | if (np->s.ramaddr) | |
1466 | pci_iounmap(pdev, np->s.ramaddr); | |
1467 | /* | |
1468 | * Free O/S independent resources. | |
1469 | */ | |
1470 | sym_hcb_free(np); | |
1471 | ||
1472 | sym_mfree_dma(np, sizeof(*np), "HCB"); | |
1473 | } | |
1474 | ||
1475 | /* | |
1476 | * Ask/tell the system about DMA addressing. | |
1477 | */ | |
1478 | static int sym_setup_bus_dma_mask(struct sym_hcb *np) | |
1479 | { | |
1480 | #if SYM_CONF_DMA_ADDRESSING_MODE > 0 | |
1481 | #if SYM_CONF_DMA_ADDRESSING_MODE == 1 | |
1482 | #define DMA_DAC_MASK 0x000000ffffffffffULL /* 40-bit */ | |
1483 | #elif SYM_CONF_DMA_ADDRESSING_MODE == 2 | |
1484 | #define DMA_DAC_MASK DMA_64BIT_MASK | |
1485 | #endif | |
1486 | if ((np->features & FE_DAC) && | |
1487 | !pci_set_dma_mask(np->s.device, DMA_DAC_MASK)) { | |
1488 | np->use_dac = 1; | |
1489 | return 0; | |
1490 | } | |
1491 | #endif | |
1492 | ||
1493 | if (!pci_set_dma_mask(np->s.device, DMA_32BIT_MASK)) | |
1494 | return 0; | |
1495 | ||
1496 | printf_warning("%s: No suitable DMA available\n", sym_name(np)); | |
1497 | return -1; | |
1498 | } | |
1499 | ||
1500 | /* | |
1501 | * Host attach and initialisations. | |
1502 | * | |
1503 | * Allocate host data and ncb structure. | |
1504 | * Remap MMIO region. | |
1505 | * Do chip initialization. | |
1506 | * If all is OK, install interrupt handling and | |
1507 | * start the timer daemon. | |
1508 | */ | |
1509 | static struct Scsi_Host * __devinit sym_attach(struct scsi_host_template *tpnt, | |
1510 | int unit, struct sym_device *dev) | |
1511 | { | |
1512 | struct host_data *host_data; | |
1513 | struct sym_hcb *np = NULL; | |
1514 | struct Scsi_Host *instance = NULL; | |
1515 | struct pci_dev *pdev = dev->pdev; | |
1516 | unsigned long flags; | |
1517 | struct sym_fw *fw; | |
1518 | ||
1519 | printk(KERN_INFO | |
1520 | "sym%d: <%s> rev 0x%x at pci %s irq " IRQ_FMT "\n", | |
1521 | unit, dev->chip.name, dev->chip.revision_id, | |
1522 | pci_name(pdev), IRQ_PRM(pdev->irq)); | |
1523 | ||
1524 | /* | |
1525 | * Get the firmware for this chip. | |
1526 | */ | |
1527 | fw = sym_find_firmware(&dev->chip); | |
1528 | if (!fw) | |
1529 | goto attach_failed; | |
1530 | ||
1531 | /* | |
1532 | * Allocate host_data structure | |
1533 | */ | |
1534 | instance = scsi_host_alloc(tpnt, sizeof(*host_data)); | |
1535 | if (!instance) | |
1536 | goto attach_failed; | |
1537 | host_data = (struct host_data *) instance->hostdata; | |
1538 | ||
1539 | /* | |
1540 | * Allocate immediately the host control block, | |
1541 | * since we are only expecting to succeed. :) | |
1542 | * We keep track in the HCB of all the resources that | |
1543 | * are to be released on error. | |
1544 | */ | |
1545 | np = __sym_calloc_dma(&pdev->dev, sizeof(*np), "HCB"); | |
1546 | if (!np) | |
1547 | goto attach_failed; | |
1548 | np->s.device = pdev; | |
1549 | np->bus_dmat = &pdev->dev; /* Result in 1 DMA pool per HBA */ | |
1550 | host_data->ncb = np; | |
1551 | np->s.host = instance; | |
1552 | ||
1553 | pci_set_drvdata(pdev, np); | |
1554 | ||
1555 | /* | |
1556 | * Copy some useful infos to the HCB. | |
1557 | */ | |
1558 | np->hcb_ba = vtobus(np); | |
1559 | np->verbose = sym_driver_setup.verbose; | |
1560 | np->s.device = pdev; | |
1561 | np->s.unit = unit; | |
1562 | np->device_id = dev->chip.device_id; | |
1563 | np->revision_id = dev->chip.revision_id; | |
1564 | np->features = dev->chip.features; | |
1565 | np->clock_divn = dev->chip.nr_divisor; | |
1566 | np->maxoffs = dev->chip.offset_max; | |
1567 | np->maxburst = dev->chip.burst_max; | |
1568 | np->myaddr = dev->host_id; | |
1569 | ||
1570 | /* | |
1571 | * Edit its name. | |
1572 | */ | |
1573 | strlcpy(np->s.chip_name, dev->chip.name, sizeof(np->s.chip_name)); | |
1574 | sprintf(np->s.inst_name, "sym%d", np->s.unit); | |
1575 | ||
1576 | if (sym_setup_bus_dma_mask(np)) | |
1577 | goto attach_failed; | |
1578 | ||
1579 | /* | |
1580 | * Try to map the controller chip to | |
1581 | * virtual and physical memory. | |
1582 | */ | |
1583 | np->mmio_ba = (u32)dev->mmio_base; | |
1584 | np->s.ioaddr = dev->s.ioaddr; | |
1585 | np->s.ramaddr = dev->s.ramaddr; | |
1586 | np->s.io_ws = (np->features & FE_IO256) ? 256 : 128; | |
1587 | ||
1588 | /* | |
1589 | * Map on-chip RAM if present and supported. | |
1590 | */ | |
1591 | if (!(np->features & FE_RAM)) | |
1592 | dev->ram_base = 0; | |
1593 | if (dev->ram_base) { | |
1594 | np->ram_ba = (u32)dev->ram_base; | |
1595 | np->ram_ws = (np->features & FE_RAM8K) ? 8192 : 4096; | |
1596 | } | |
1597 | ||
1598 | if (sym_hcb_attach(instance, fw, dev->nvram)) | |
1599 | goto attach_failed; | |
1600 | ||
1601 | /* | |
1602 | * Install the interrupt handler. | |
1603 | * If we synchonize the C code with SCRIPTS on interrupt, | |
1604 | * we do not want to share the INTR line at all. | |
1605 | */ | |
1606 | if (request_irq(pdev->irq, sym53c8xx_intr, SA_SHIRQ, NAME53C8XX, np)) { | |
1607 | printf_err("%s: request irq %d failure\n", | |
1608 | sym_name(np), pdev->irq); | |
1609 | goto attach_failed; | |
1610 | } | |
1611 | np->s.irq = pdev->irq; | |
1612 | ||
1613 | /* | |
1614 | * After SCSI devices have been opened, we cannot | |
1615 | * reset the bus safely, so we do it here. | |
1616 | */ | |
1617 | spin_lock_irqsave(instance->host_lock, flags); | |
1618 | if (sym_reset_scsi_bus(np, 0)) | |
1619 | goto reset_failed; | |
1620 | ||
1621 | /* | |
1622 | * Start the SCRIPTS. | |
1623 | */ | |
1624 | sym_start_up (np, 1); | |
1625 | ||
1626 | /* | |
1627 | * Start the timer daemon | |
1628 | */ | |
1629 | init_timer(&np->s.timer); | |
1630 | np->s.timer.data = (unsigned long) np; | |
1631 | np->s.timer.function = sym53c8xx_timer; | |
1632 | np->s.lasttime=0; | |
1633 | sym_timer (np); | |
1634 | ||
1635 | /* | |
1636 | * Fill Linux host instance structure | |
1637 | * and return success. | |
1638 | */ | |
1639 | instance->max_channel = 0; | |
1640 | instance->this_id = np->myaddr; | |
1641 | instance->max_id = np->maxwide ? 16 : 8; | |
1642 | instance->max_lun = SYM_CONF_MAX_LUN; | |
1643 | instance->unique_id = pci_resource_start(pdev, 0); | |
1644 | instance->cmd_per_lun = SYM_CONF_MAX_TAG; | |
1645 | instance->can_queue = (SYM_CONF_MAX_START-2); | |
1646 | instance->sg_tablesize = SYM_CONF_MAX_SG; | |
1647 | instance->max_cmd_len = 16; | |
1648 | BUG_ON(sym2_transport_template == NULL); | |
1649 | instance->transportt = sym2_transport_template; | |
1650 | ||
1651 | spin_unlock_irqrestore(instance->host_lock, flags); | |
1652 | ||
1653 | return instance; | |
1654 | ||
1655 | reset_failed: | |
1656 | printf_err("%s: FATAL ERROR: CHECK SCSI BUS - CABLES, " | |
1657 | "TERMINATION, DEVICE POWER etc.!\n", sym_name(np)); | |
1658 | spin_unlock_irqrestore(instance->host_lock, flags); | |
1659 | attach_failed: | |
1660 | if (!instance) | |
1661 | return NULL; | |
1662 | printf_info("%s: giving up ...\n", sym_name(np)); | |
1663 | if (np) | |
1664 | sym_free_resources(np, pdev); | |
1665 | scsi_host_put(instance); | |
1666 | ||
1667 | return NULL; | |
1668 | } | |
1669 | ||
1670 | ||
1671 | /* | |
1672 | * Detect and try to read SYMBIOS and TEKRAM NVRAM. | |
1673 | */ | |
1674 | #if SYM_CONF_NVRAM_SUPPORT | |
1675 | static void __devinit sym_get_nvram(struct sym_device *devp, struct sym_nvram *nvp) | |
1676 | { | |
1677 | devp->nvram = nvp; | |
1678 | devp->device_id = devp->chip.device_id; | |
1679 | nvp->type = 0; | |
1680 | ||
1681 | sym_read_nvram(devp, nvp); | |
1682 | } | |
1683 | #else | |
1684 | static inline void sym_get_nvram(struct sym_device *devp, struct sym_nvram *nvp) | |
1685 | { | |
1686 | } | |
1687 | #endif /* SYM_CONF_NVRAM_SUPPORT */ | |
1688 | ||
1689 | static int __devinit sym_check_supported(struct sym_device *device) | |
1690 | { | |
1691 | struct sym_chip *chip; | |
1692 | struct pci_dev *pdev = device->pdev; | |
1693 | u_char revision; | |
1694 | unsigned long io_port = pci_resource_start(pdev, 0); | |
1695 | int i; | |
1696 | ||
1697 | /* | |
1698 | * If user excluded this chip, do not initialize it. | |
1699 | * I hate this code so much. Must kill it. | |
1700 | */ | |
1701 | if (io_port) { | |
1702 | for (i = 0 ; i < 8 ; i++) { | |
1703 | if (sym_driver_setup.excludes[i] == io_port) | |
1704 | return -ENODEV; | |
1705 | } | |
1706 | } | |
1707 | ||
1708 | /* | |
1709 | * Check if the chip is supported. Then copy the chip description | |
1710 | * to our device structure so we can make it match the actual device | |
1711 | * and options. | |
1712 | */ | |
1713 | pci_read_config_byte(pdev, PCI_CLASS_REVISION, &revision); | |
1714 | chip = sym_lookup_chip_table(pdev->device, revision); | |
1715 | if (!chip) { | |
1716 | dev_info(&pdev->dev, "device not supported\n"); | |
1717 | return -ENODEV; | |
1718 | } | |
1719 | memcpy(&device->chip, chip, sizeof(device->chip)); | |
1720 | device->chip.revision_id = revision; | |
1721 | ||
1722 | return 0; | |
1723 | } | |
1724 | ||
1725 | /* | |
1726 | * Ignore Symbios chips controlled by various RAID controllers. | |
1727 | * These controllers set value 0x52414944 at RAM end - 16. | |
1728 | */ | |
1729 | static int __devinit sym_check_raid(struct sym_device *device) | |
1730 | { | |
1731 | unsigned int ram_size, ram_val; | |
1732 | ||
1733 | if (!device->s.ramaddr) | |
1734 | return 0; | |
1735 | ||
1736 | if (device->chip.features & FE_RAM8K) | |
1737 | ram_size = 8192; | |
1738 | else | |
1739 | ram_size = 4096; | |
1740 | ||
1741 | ram_val = readl(device->s.ramaddr + ram_size - 16); | |
1742 | if (ram_val != 0x52414944) | |
1743 | return 0; | |
1744 | ||
1745 | dev_info(&device->pdev->dev, | |
1746 | "not initializing, driven by RAID controller.\n"); | |
1747 | return -ENODEV; | |
1748 | } | |
1749 | ||
1750 | static int __devinit sym_set_workarounds(struct sym_device *device) | |
1751 | { | |
1752 | struct sym_chip *chip = &device->chip; | |
1753 | struct pci_dev *pdev = device->pdev; | |
1754 | u_short status_reg; | |
1755 | ||
1756 | /* | |
1757 | * (ITEM 12 of a DEL about the 896 I haven't yet). | |
1758 | * We must ensure the chip will use WRITE AND INVALIDATE. | |
1759 | * The revision number limit is for now arbitrary. | |
1760 | */ | |
1761 | if (pdev->device == PCI_DEVICE_ID_NCR_53C896 && chip->revision_id < 0x4) { | |
1762 | chip->features |= (FE_WRIE | FE_CLSE); | |
1763 | } | |
1764 | ||
1765 | /* If the chip can do Memory Write Invalidate, enable it */ | |
1766 | if (chip->features & FE_WRIE) { | |
1767 | if (pci_set_mwi(pdev)) | |
1768 | return -ENODEV; | |
1769 | } | |
1770 | ||
1771 | /* | |
1772 | * Work around for errant bit in 895A. The 66Mhz | |
1773 | * capable bit is set erroneously. Clear this bit. | |
1774 | * (Item 1 DEL 533) | |
1775 | * | |
1776 | * Make sure Config space and Features agree. | |
1777 | * | |
1778 | * Recall: writes are not normal to status register - | |
1779 | * write a 1 to clear and a 0 to leave unchanged. | |
1780 | * Can only reset bits. | |
1781 | */ | |
1782 | pci_read_config_word(pdev, PCI_STATUS, &status_reg); | |
1783 | if (chip->features & FE_66MHZ) { | |
1784 | if (!(status_reg & PCI_STATUS_66MHZ)) | |
1785 | chip->features &= ~FE_66MHZ; | |
1786 | } else { | |
1787 | if (status_reg & PCI_STATUS_66MHZ) { | |
1788 | status_reg = PCI_STATUS_66MHZ; | |
1789 | pci_write_config_word(pdev, PCI_STATUS, status_reg); | |
1790 | pci_read_config_word(pdev, PCI_STATUS, &status_reg); | |
1791 | } | |
1792 | } | |
1793 | ||
1794 | return 0; | |
1795 | } | |
1796 | ||
1797 | /* | |
1798 | * Read and check the PCI configuration for any detected NCR | |
1799 | * boards and save data for attaching after all boards have | |
1800 | * been detected. | |
1801 | */ | |
1802 | static void __devinit | |
1803 | sym_init_device(struct pci_dev *pdev, struct sym_device *device) | |
1804 | { | |
1805 | int i; | |
1806 | ||
1807 | device->host_id = SYM_SETUP_HOST_ID; | |
1808 | device->pdev = pdev; | |
1809 | ||
1810 | i = pci_get_base_address(pdev, 1, &device->mmio_base); | |
1811 | pci_get_base_address(pdev, i, &device->ram_base); | |
1812 | ||
1813 | #ifndef CONFIG_SCSI_SYM53C8XX_IOMAPPED | |
1814 | if (device->mmio_base) | |
1815 | device->s.ioaddr = pci_iomap(pdev, 1, | |
1816 | pci_resource_len(pdev, 1)); | |
1817 | #endif | |
1818 | if (!device->s.ioaddr) | |
1819 | device->s.ioaddr = pci_iomap(pdev, 0, | |
1820 | pci_resource_len(pdev, 0)); | |
1821 | if (device->ram_base) | |
1822 | device->s.ramaddr = pci_iomap(pdev, i, | |
1823 | pci_resource_len(pdev, i)); | |
1824 | } | |
1825 | ||
1826 | /* | |
1827 | * The NCR PQS and PDS cards are constructed as a DEC bridge | |
1828 | * behind which sits a proprietary NCR memory controller and | |
1829 | * either four or two 53c875s as separate devices. We can tell | |
1830 | * if an 875 is part of a PQS/PDS or not since if it is, it will | |
1831 | * be on the same bus as the memory controller. In its usual | |
1832 | * mode of operation, the 875s are slaved to the memory | |
1833 | * controller for all transfers. To operate with the Linux | |
1834 | * driver, the memory controller is disabled and the 875s | |
1835 | * freed to function independently. The only wrinkle is that | |
1836 | * the preset SCSI ID (which may be zero) must be read in from | |
1837 | * a special configuration space register of the 875. | |
1838 | */ | |
1839 | static void sym_config_pqs(struct pci_dev *pdev, struct sym_device *sym_dev) | |
1840 | { | |
1841 | int slot; | |
1842 | u8 tmp; | |
1843 | ||
1844 | for (slot = 0; slot < 256; slot++) { | |
1845 | struct pci_dev *memc = pci_get_slot(pdev->bus, slot); | |
1846 | ||
1847 | if (!memc || memc->vendor != 0x101a || memc->device == 0x0009) { | |
1848 | pci_dev_put(memc); | |
1849 | continue; | |
1850 | } | |
1851 | ||
1852 | /* bit 1: allow individual 875 configuration */ | |
1853 | pci_read_config_byte(memc, 0x44, &tmp); | |
1854 | if ((tmp & 0x2) == 0) { | |
1855 | tmp |= 0x2; | |
1856 | pci_write_config_byte(memc, 0x44, tmp); | |
1857 | } | |
1858 | ||
1859 | /* bit 2: drive individual 875 interrupts to the bus */ | |
1860 | pci_read_config_byte(memc, 0x45, &tmp); | |
1861 | if ((tmp & 0x4) == 0) { | |
1862 | tmp |= 0x4; | |
1863 | pci_write_config_byte(memc, 0x45, tmp); | |
1864 | } | |
1865 | ||
1866 | pci_dev_put(memc); | |
1867 | break; | |
1868 | } | |
1869 | ||
1870 | pci_read_config_byte(pdev, 0x84, &tmp); | |
1871 | sym_dev->host_id = tmp; | |
1872 | } | |
1873 | ||
1874 | /* | |
1875 | * Called before unloading the module. | |
1876 | * Detach the host. | |
1877 | * We have to free resources and halt the NCR chip. | |
1878 | */ | |
1879 | static int sym_detach(struct sym_hcb *np, struct pci_dev *pdev) | |
1880 | { | |
1881 | printk("%s: detaching ...\n", sym_name(np)); | |
1882 | ||
1883 | del_timer_sync(&np->s.timer); | |
1884 | ||
1885 | /* | |
1886 | * Reset NCR chip. | |
1887 | * We should use sym_soft_reset(), but we don't want to do | |
1888 | * so, since we may not be safe if interrupts occur. | |
1889 | */ | |
1890 | printk("%s: resetting chip\n", sym_name(np)); | |
1891 | OUTB(np, nc_istat, SRST); | |
53222b90 | 1892 | INB(np, nc_mbox1); |
1da177e4 LT |
1893 | udelay(10); |
1894 | OUTB(np, nc_istat, 0); | |
1895 | ||
1896 | sym_free_resources(np, pdev); | |
1897 | ||
1898 | return 1; | |
1899 | } | |
1900 | ||
1901 | /* | |
1902 | * Driver host template. | |
1903 | */ | |
1904 | static struct scsi_host_template sym2_template = { | |
1905 | .module = THIS_MODULE, | |
1906 | .name = "sym53c8xx", | |
1907 | .info = sym53c8xx_info, | |
1908 | .queuecommand = sym53c8xx_queue_command, | |
1909 | .slave_alloc = sym53c8xx_slave_alloc, | |
1910 | .slave_configure = sym53c8xx_slave_configure, | |
1da177e4 LT |
1911 | .eh_abort_handler = sym53c8xx_eh_abort_handler, |
1912 | .eh_device_reset_handler = sym53c8xx_eh_device_reset_handler, | |
1913 | .eh_bus_reset_handler = sym53c8xx_eh_bus_reset_handler, | |
1914 | .eh_host_reset_handler = sym53c8xx_eh_host_reset_handler, | |
1915 | .this_id = 7, | |
1916 | .use_clustering = DISABLE_CLUSTERING, | |
1917 | #ifdef SYM_LINUX_PROC_INFO_SUPPORT | |
1918 | .proc_info = sym53c8xx_proc_info, | |
1919 | .proc_name = NAME53C8XX, | |
1920 | #endif | |
1921 | }; | |
1922 | ||
1923 | static int attach_count; | |
1924 | ||
1925 | static int __devinit sym2_probe(struct pci_dev *pdev, | |
1926 | const struct pci_device_id *ent) | |
1927 | { | |
1928 | struct sym_device sym_dev; | |
1929 | struct sym_nvram nvram; | |
1930 | struct Scsi_Host *instance; | |
1931 | ||
1932 | memset(&sym_dev, 0, sizeof(sym_dev)); | |
1933 | memset(&nvram, 0, sizeof(nvram)); | |
1934 | ||
1935 | if (pci_enable_device(pdev)) | |
1936 | goto leave; | |
1937 | ||
1938 | pci_set_master(pdev); | |
1939 | ||
1940 | if (pci_request_regions(pdev, NAME53C8XX)) | |
1941 | goto disable; | |
1942 | ||
1943 | sym_init_device(pdev, &sym_dev); | |
1944 | if (sym_check_supported(&sym_dev)) | |
1945 | goto free; | |
1946 | ||
1947 | if (sym_check_raid(&sym_dev)) | |
1948 | goto leave; /* Don't disable the device */ | |
1949 | ||
1950 | if (sym_set_workarounds(&sym_dev)) | |
1951 | goto free; | |
1952 | ||
1953 | sym_config_pqs(pdev, &sym_dev); | |
1954 | ||
1955 | sym_get_nvram(&sym_dev, &nvram); | |
1956 | ||
1957 | instance = sym_attach(&sym2_template, attach_count, &sym_dev); | |
1958 | if (!instance) | |
1959 | goto free; | |
1960 | ||
1961 | if (scsi_add_host(instance, &pdev->dev)) | |
1962 | goto detach; | |
1963 | scsi_scan_host(instance); | |
1964 | ||
1965 | attach_count++; | |
1966 | ||
1967 | return 0; | |
1968 | ||
1969 | detach: | |
1970 | sym_detach(pci_get_drvdata(pdev), pdev); | |
1971 | free: | |
1972 | pci_release_regions(pdev); | |
1973 | disable: | |
1974 | pci_disable_device(pdev); | |
1975 | leave: | |
1976 | return -ENODEV; | |
1977 | } | |
1978 | ||
1979 | static void __devexit sym2_remove(struct pci_dev *pdev) | |
1980 | { | |
1981 | struct sym_hcb *np = pci_get_drvdata(pdev); | |
1982 | struct Scsi_Host *host = np->s.host; | |
1983 | ||
1984 | scsi_remove_host(host); | |
1985 | scsi_host_put(host); | |
1986 | ||
1987 | sym_detach(np, pdev); | |
1988 | ||
1989 | pci_release_regions(pdev); | |
1990 | pci_disable_device(pdev); | |
1991 | ||
1992 | attach_count--; | |
1993 | } | |
1994 | ||
1995 | static void sym2_get_signalling(struct Scsi_Host *shost) | |
1996 | { | |
1997 | struct sym_hcb *np = sym_get_hcb(shost); | |
1998 | enum spi_signal_type type; | |
1999 | ||
2000 | switch (np->scsi_mode) { | |
2001 | case SMODE_SE: | |
2002 | type = SPI_SIGNAL_SE; | |
2003 | break; | |
2004 | case SMODE_LVD: | |
2005 | type = SPI_SIGNAL_LVD; | |
2006 | break; | |
2007 | case SMODE_HVD: | |
2008 | type = SPI_SIGNAL_HVD; | |
2009 | break; | |
2010 | default: | |
2011 | type = SPI_SIGNAL_UNKNOWN; | |
2012 | break; | |
2013 | } | |
2014 | spi_signalling(shost) = type; | |
2015 | } | |
2016 | ||
2017 | static void sym2_set_offset(struct scsi_target *starget, int offset) | |
2018 | { | |
2019 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
2020 | struct sym_hcb *np = sym_get_hcb(shost); | |
2021 | struct sym_tcb *tp = &np->target[starget->id]; | |
2022 | ||
2023 | tp->tgoal.offset = offset; | |
2024 | tp->tgoal.check_nego = 1; | |
2025 | } | |
2026 | ||
2027 | static void sym2_set_period(struct scsi_target *starget, int period) | |
2028 | { | |
2029 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
2030 | struct sym_hcb *np = sym_get_hcb(shost); | |
2031 | struct sym_tcb *tp = &np->target[starget->id]; | |
2032 | ||
e4862fed JB |
2033 | /* have to have DT for these transfers, but DT will also |
2034 | * set width, so check that this is allowed */ | |
2035 | if (period <= np->minsync && spi_width(starget)) | |
1da177e4 LT |
2036 | tp->tgoal.dt = 1; |
2037 | ||
2038 | tp->tgoal.period = period; | |
2039 | tp->tgoal.check_nego = 1; | |
2040 | } | |
2041 | ||
2042 | static void sym2_set_width(struct scsi_target *starget, int width) | |
2043 | { | |
2044 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
2045 | struct sym_hcb *np = sym_get_hcb(shost); | |
2046 | struct sym_tcb *tp = &np->target[starget->id]; | |
2047 | ||
2048 | /* It is illegal to have DT set on narrow transfers. If DT is | |
2049 | * clear, we must also clear IU and QAS. */ | |
2050 | if (width == 0) | |
2051 | tp->tgoal.iu = tp->tgoal.dt = tp->tgoal.qas = 0; | |
2052 | ||
2053 | tp->tgoal.width = width; | |
2054 | tp->tgoal.check_nego = 1; | |
2055 | } | |
2056 | ||
2057 | static void sym2_set_dt(struct scsi_target *starget, int dt) | |
2058 | { | |
2059 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
2060 | struct sym_hcb *np = sym_get_hcb(shost); | |
2061 | struct sym_tcb *tp = &np->target[starget->id]; | |
2062 | ||
2063 | /* We must clear QAS and IU if DT is clear */ | |
2064 | if (dt) | |
2065 | tp->tgoal.dt = 1; | |
2066 | else | |
2067 | tp->tgoal.iu = tp->tgoal.dt = tp->tgoal.qas = 0; | |
2068 | tp->tgoal.check_nego = 1; | |
2069 | } | |
2070 | ||
2071 | static void sym2_set_iu(struct scsi_target *starget, int iu) | |
2072 | { | |
2073 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
2074 | struct sym_hcb *np = sym_get_hcb(shost); | |
2075 | struct sym_tcb *tp = &np->target[starget->id]; | |
2076 | ||
2077 | if (iu) | |
2078 | tp->tgoal.iu = tp->tgoal.dt = 1; | |
2079 | else | |
2080 | tp->tgoal.iu = 0; | |
2081 | tp->tgoal.check_nego = 1; | |
2082 | } | |
2083 | ||
2084 | static void sym2_set_qas(struct scsi_target *starget, int qas) | |
2085 | { | |
2086 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
2087 | struct sym_hcb *np = sym_get_hcb(shost); | |
2088 | struct sym_tcb *tp = &np->target[starget->id]; | |
2089 | ||
2090 | if (qas) | |
2091 | tp->tgoal.dt = tp->tgoal.qas = 1; | |
2092 | else | |
2093 | tp->tgoal.qas = 0; | |
2094 | tp->tgoal.check_nego = 1; | |
2095 | } | |
2096 | ||
2097 | ||
2098 | static struct spi_function_template sym2_transport_functions = { | |
2099 | .set_offset = sym2_set_offset, | |
2100 | .show_offset = 1, | |
2101 | .set_period = sym2_set_period, | |
2102 | .show_period = 1, | |
2103 | .set_width = sym2_set_width, | |
2104 | .show_width = 1, | |
2105 | .set_dt = sym2_set_dt, | |
2106 | .show_dt = 1, | |
2107 | .set_iu = sym2_set_iu, | |
2108 | .show_iu = 1, | |
2109 | .set_qas = sym2_set_qas, | |
2110 | .show_qas = 1, | |
2111 | .get_signalling = sym2_get_signalling, | |
2112 | }; | |
2113 | ||
2114 | static struct pci_device_id sym2_id_table[] __devinitdata = { | |
2115 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C810, | |
2116 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, | |
2117 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C820, | |
2118 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, /* new */ | |
2119 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C825, | |
2120 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, | |
2121 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C815, | |
2122 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, | |
2123 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C810AP, | |
2124 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, /* new */ | |
2125 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C860, | |
2126 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, | |
2127 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1510, | |
2128 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, | |
2129 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C896, | |
2130 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, | |
2131 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C895, | |
2132 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, | |
2133 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C885, | |
2134 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, | |
2135 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C875, | |
2136 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, | |
2137 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C1510, | |
2138 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, /* new */ | |
2139 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C895A, | |
2140 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, | |
2141 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C875A, | |
2142 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, | |
2143 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1010_33, | |
2144 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, | |
2145 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1010_66, | |
2146 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, | |
2147 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C875J, | |
2148 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, | |
2149 | { 0, } | |
2150 | }; | |
2151 | ||
2152 | MODULE_DEVICE_TABLE(pci, sym2_id_table); | |
2153 | ||
2154 | static struct pci_driver sym2_driver = { | |
2155 | .name = NAME53C8XX, | |
2156 | .id_table = sym2_id_table, | |
2157 | .probe = sym2_probe, | |
2158 | .remove = __devexit_p(sym2_remove), | |
2159 | }; | |
2160 | ||
2161 | static int __init sym2_init(void) | |
2162 | { | |
2163 | int error; | |
2164 | ||
2165 | sym2_setup_params(); | |
2166 | sym2_transport_template = spi_attach_transport(&sym2_transport_functions); | |
2167 | if (!sym2_transport_template) | |
2168 | return -ENODEV; | |
2169 | ||
2170 | error = pci_register_driver(&sym2_driver); | |
2171 | if (error) | |
2172 | spi_release_transport(sym2_transport_template); | |
2173 | return error; | |
2174 | } | |
2175 | ||
2176 | static void __exit sym2_exit(void) | |
2177 | { | |
2178 | pci_unregister_driver(&sym2_driver); | |
2179 | spi_release_transport(sym2_transport_template); | |
2180 | } | |
2181 | ||
2182 | module_init(sym2_init); | |
2183 | module_exit(sym2_exit); |