1 /*
2 * Copyright (c) 2000-2001 Adaptec Inc.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions, and the following disclaimer,
10 * without modification.
11 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
12 * substantially similar to the "NO WARRANTY" disclaimer below
13 * ("Disclaimer") and any redistribution must be conditioned upon
14 * including a substantially similar Disclaimer requirement for further
15 * binary redistribution.
16 * 3. Neither the names of the above-listed copyright holders nor the names
17 * of any contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
19 *
20 * Alternatively, this software may be distributed under the terms of the
21 * GNU General Public License ("GPL") version 2 as published by the Free
22 * Software Foundation.
23 *
24 * NO WARRANTY
25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
26 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
27 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
28 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
29 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
33 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
34 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
35 * POSSIBILITY OF SUCH DAMAGES.
36 *
37 * String handling code courtesy of Gerard Roudier's <groudier@club-internet.fr>
38 * sym driver.
39 *
40 * $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic79xx_proc.c#19 $
41 */
42 #include "aic79xx_osm.h"
43 #include "aic79xx_inline.h"
44
45 static void copy_mem_info(struct info_str *info, char *data, int len);
46 static int copy_info(struct info_str *info, char *fmt, ...);
47 static void ahd_dump_target_state(struct ahd_softc *ahd,
48 struct info_str *info,
49 u_int our_id, char channel,
50 u_int target_id, u_int target_offset);
51 static void ahd_dump_device_state(struct info_str *info,
52 struct ahd_linux_device *dev);
53 static int ahd_proc_write_seeprom(struct ahd_softc *ahd,
54 char *buffer, int length);
55
56 static void
57 copy_mem_info(struct info_str *info, char *data, int len)
58 {
59 if (info->pos + len > info->offset + info->length)
60 len = info->offset + info->length - info->pos;
61
62 if (info->pos + len < info->offset) {
63 info->pos += len;
64 return;
65 }
66
67 if (info->pos < info->offset) {
68 off_t partial;
69
70 partial = info->offset - info->pos;
71 data += partial;
72 info->pos += partial;
73 len -= partial;
74 }
75
76 if (len > 0) {
77 memcpy(info->buffer, data, len);
78 info->pos += len;
79 info->buffer += len;
80 }
81 }
82
83 static int
84 copy_info(struct info_str *info, char *fmt, ...)
85 {
86 va_list args;
87 char buf[256];
88 int len;
89
90 va_start(args, fmt);
91 len = vsprintf(buf, fmt, args);
92 va_end(args);
93
94 copy_mem_info(info, buf, len);
95 return (len);
96 }
97
98 void
99 ahd_format_transinfo(struct info_str *info, struct ahd_transinfo *tinfo)
100 {
101 u_int speed;
102 u_int freq;
103 u_int mb;
104
105 if (tinfo->period == AHD_PERIOD_UNKNOWN) {
106 copy_info(info, "Renegotiation Pending\n");
107 return;
108 }
109 speed = 3300;
110 freq = 0;
111 if (tinfo->offset != 0) {
112 freq = aic_calc_syncsrate(tinfo->period);
113 speed = freq;
114 }
115 speed *= (0x01 << tinfo->width);
116 mb = speed / 1000;
117 if (mb > 0)
118 copy_info(info, "%d.%03dMB/s transfers", mb, speed % 1000);
119 else
120 copy_info(info, "%dKB/s transfers", speed);
121
122 if (freq != 0) {
123 int printed_options;
124
125 printed_options = 0;
126 copy_info(info, " (%d.%03dMHz", freq / 1000, freq % 1000);
127 if ((tinfo->ppr_options & MSG_EXT_PPR_RD_STRM) != 0) {
128 copy_info(info, " RDSTRM");
129 printed_options++;
130 }
131 if ((tinfo->ppr_options & MSG_EXT_PPR_DT_REQ) != 0) {
132 copy_info(info, "%s", printed_options ? "|DT" : " DT");
133 printed_options++;
134 }
135 if ((tinfo->ppr_options & MSG_EXT_PPR_IU_REQ) != 0) {
136 copy_info(info, "%s", printed_options ? "|IU" : " IU");
137 printed_options++;
138 }
139 if ((tinfo->ppr_options & MSG_EXT_PPR_RTI) != 0) {
140 copy_info(info, "%s",
141 printed_options ? "|RTI" : " RTI");
142 printed_options++;
143 }
144 if ((tinfo->ppr_options & MSG_EXT_PPR_QAS_REQ) != 0) {
145 copy_info(info, "%s",
146 printed_options ? "|QAS" : " QAS");
147 printed_options++;
148 }
149 }
150
151 if (tinfo->width > 0) {
152 if (freq != 0) {
153 copy_info(info, ", ");
154 } else {
155 copy_info(info, " (");
156 }
157 copy_info(info, "%dbit)", 8 * (0x01 << tinfo->width));
158 } else if (freq != 0) {
159 copy_info(info, ")");
160 }
161 copy_info(info, "\n");
162 }
163
164 static void
165 ahd_dump_target_state(struct ahd_softc *ahd, struct info_str *info,
166 u_int our_id, char channel, u_int target_id,
167 u_int target_offset)
168 {
169 struct ahd_linux_target *targ;
170 struct ahd_initiator_tinfo *tinfo;
171 struct ahd_tmode_tstate *tstate;
172 int lun;
173
174 tinfo = ahd_fetch_transinfo(ahd, channel, our_id,
175 target_id, &tstate);
176 copy_info(info, "Target %d Negotiation Settings\n", target_id);
177 copy_info(info, "\tUser: ");
178 ahd_format_transinfo(info, &tinfo->user);
179 targ = ahd->platform_data->targets[target_offset];
180 if (targ == NULL)
181 return;
182
183 copy_info(info, "\tGoal: ");
184 ahd_format_transinfo(info, &tinfo->goal);
185 copy_info(info, "\tCurr: ");
186 ahd_format_transinfo(info, &tinfo->curr);
187 copy_info(info, "\tTransmission Errors %ld\n", targ->errors_detected);
188
189 for (lun = 0; lun < AHD_NUM_LUNS; lun++) {
190 struct ahd_linux_device *dev;
191
192 dev = targ->devices[lun];
193
194 if (dev == NULL)
195 continue;
196
197 ahd_dump_device_state(info, dev);
198 }
199 }
200
201 static void
202 ahd_dump_device_state(struct info_str *info, struct ahd_linux_device *dev)
203 {
204 copy_info(info, "\tChannel %c Target %d Lun %d Settings\n",
205 dev->target->channel + 'A', dev->target->target, dev->lun);
206
207 copy_info(info, "\t\tCommands Queued %ld\n", dev->commands_issued);
208 copy_info(info, "\t\tCommands Active %d\n", dev->active);
209 copy_info(info, "\t\tCommand Openings %d\n", dev->openings);
210 copy_info(info, "\t\tMax Tagged Openings %d\n", dev->maxtags);
211 copy_info(info, "\t\tDevice Queue Frozen Count %d\n", dev->qfrozen);
212 }
213
214 static int
215 ahd_proc_write_seeprom(struct ahd_softc *ahd, char *buffer, int length)
216 {
217 ahd_mode_state saved_modes;
218 int have_seeprom;
219 u_long s;
220 int paused;
221 int written;
222
223 /* Default to failure. */
224 written = -EINVAL;
225 ahd_lock(ahd, &s);
226 paused = ahd_is_paused(ahd);
227 if (!paused)
228 ahd_pause(ahd);
229
230 saved_modes = ahd_save_modes(ahd);
231 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
232 if (length != sizeof(struct seeprom_config)) {
233 printf("ahd_proc_write_seeprom: incorrect buffer size\n");
234 goto done;
235 }
236
237 have_seeprom = ahd_verify_cksum((struct seeprom_config*)buffer);
238 if (have_seeprom == 0) {
239 printf("ahd_proc_write_seeprom: cksum verification failed\n");
240 goto done;
241 }
242
243 have_seeprom = ahd_acquire_seeprom(ahd);
244 if (!have_seeprom) {
245 printf("ahd_proc_write_seeprom: No Serial EEPROM\n");
246 goto done;
247 } else {
248 u_int start_addr;
249
250 if (ahd->seep_config == NULL) {
251 ahd->seep_config = malloc(sizeof(*ahd->seep_config),
252 M_DEVBUF, M_NOWAIT);
253 if (ahd->seep_config == NULL) {
254 printf("aic79xx: Unable to allocate serial "
255 "eeprom buffer. Write failing\n");
256 goto done;
257 }
258 }
259 printf("aic79xx: Writing Serial EEPROM\n");
260 start_addr = 32 * (ahd->channel - 'A');
261 ahd_write_seeprom(ahd, (u_int16_t *)buffer, start_addr,
262 sizeof(struct seeprom_config)/2);
263 ahd_read_seeprom(ahd, (uint16_t *)ahd->seep_config,
264 start_addr, sizeof(struct seeprom_config)/2,
265 /*ByteStream*/FALSE);
266 ahd_release_seeprom(ahd);
267 written = length;
268 }
269
270 done:
271 ahd_restore_modes(ahd, saved_modes);
272 if (!paused)
273 ahd_unpause(ahd);
274 ahd_unlock(ahd, &s);
275 return (written);
276 }
277 /*
278 * Return information to handle /proc support for the driver.
279 */
280 int
281 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
282 ahd_linux_proc_info(char *buffer, char **start, off_t offset,
283 int length, int hostno, int inout)
284 #else
285 ahd_linux_proc_info(struct Scsi_Host *shost, char *buffer, char **start,
286 off_t offset, int length, int inout)
287 #endif
288 {
289 struct ahd_softc *ahd;
290 struct info_str info;
291 char ahd_info[256];
292 u_long l;
293 u_int max_targ;
294 u_int i;
295 int retval;
296
297 retval = -EINVAL;
298 ahd_list_lock(&l);
299 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
300 TAILQ_FOREACH(ahd, &ahd_tailq, links) {
301 if (ahd->platform_data->host->host_no == hostno)
302 break;
303 }
304 #else
305 ahd = ahd_find_softc(*(struct ahd_softc **)shost->hostdata);
306 #endif
307
308 if (ahd == NULL)
309 goto done;
310
311 /* Has data been written to the file? */
312 if (inout == TRUE) {
313 retval = ahd_proc_write_seeprom(ahd, buffer, length);
314 goto done;
315 }
316
317 if (start)
318 *start = buffer;
319
320 info.buffer = buffer;
321 info.length = length;
322 info.offset = offset;
323 info.pos = 0;
324
325 copy_info(&info, "Adaptec AIC79xx driver version: %s\n",
326 AIC79XX_DRIVER_VERSION);
327 copy_info(&info, "%s\n", ahd->description);
328 ahd_controller_info(ahd, ahd_info);
329 copy_info(&info, "%s\n", ahd_info);
330 copy_info(&info, "Allocated SCBs: %d, SG List Length: %d\n\n",
331 ahd->scb_data.numscbs, AHD_NSEG);
332
333 max_targ = 15;
334
335 if (ahd->seep_config == NULL)
336 copy_info(&info, "No Serial EEPROM\n");
337 else {
338 copy_info(&info, "Serial EEPROM:\n");
339 for (i = 0; i < sizeof(*ahd->seep_config)/2; i++) {
340 if (((i % 8) == 0) && (i != 0)) {
341 copy_info(&info, "\n");
342 }
343 copy_info(&info, "0x%.4x ",
344 ((uint16_t*)ahd->seep_config)[i]);
345 }
346 copy_info(&info, "\n");
347 }
348 copy_info(&info, "\n");
349
350 if ((ahd->features & AHD_WIDE) == 0)
351 max_targ = 7;
352
353 for (i = 0; i <= max_targ; i++) {
354
355 ahd_dump_target_state(ahd, &info, ahd->our_id, 'A',
356 /*target_id*/i, /*target_offset*/i);
357 }
358 retval = info.pos > info.offset ? info.pos - info.offset : 0;
359 done:
360 ahd_list_unlock(&l);
361 return (retval);
362 }
363
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