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/aic7xxx_proc.c#29 $
41 */
42 #include "aic7xxx_osm.h"
43 #include "aic7xxx_inline.h"
44 #include "aic7xxx_93cx6.h"
45
46 static void ahc_dump_target_state(struct ahc_softc *ahc,
47 struct seq_file *m,
48 u_int our_id, char channel,
49 u_int target_id, u_int target_offset);
50 static void ahc_dump_device_state(struct seq_file *m,
51 struct scsi_device *dev);
52
53 /*
54 * Table of syncrates that don't follow the "divisible by 4"
55 * rule. This table will be expanded in future SCSI specs.
56 */
57 static const struct {
58 u_int period_factor;
59 u_int period; /* in 100ths of ns */
60 } scsi_syncrates[] = {
61 { 0x08, 625 }, /* FAST-160 */
62 { 0x09, 1250 }, /* FAST-80 */
63 { 0x0a, 2500 }, /* FAST-40 40MHz */
64 { 0x0b, 3030 }, /* FAST-40 33MHz */
65 { 0x0c, 5000 } /* FAST-20 */
66 };
67
68 /*
69 * Return the frequency in kHz corresponding to the given
70 * sync period factor.
71 */
72 static u_int
ahc_calc_syncsrate(u_int period_factor)73 ahc_calc_syncsrate(u_int period_factor)
74 {
75 int i;
76
77 /* See if the period is in the "exception" table */
78 for (i = 0; i < ARRAY_SIZE(scsi_syncrates); i++) {
79
80 if (period_factor == scsi_syncrates[i].period_factor) {
81 /* Period in kHz */
82 return (100000000 / scsi_syncrates[i].period);
83 }
84 }
85
86 /*
87 * Wasn't in the table, so use the standard
88 * 4 times conversion.
89 */
90 return (10000000 / (period_factor * 4 * 10));
91 }
92
93 static void
ahc_format_transinfo(struct seq_file * m,struct ahc_transinfo * tinfo)94 ahc_format_transinfo(struct seq_file *m, struct ahc_transinfo *tinfo)
95 {
96 u_int speed;
97 u_int freq;
98 u_int mb;
99
100 speed = 3300;
101 freq = 0;
102 if (tinfo->offset != 0) {
103 freq = ahc_calc_syncsrate(tinfo->period);
104 speed = freq;
105 }
106 speed *= (0x01 << tinfo->width);
107 mb = speed / 1000;
108 if (mb > 0)
109 seq_printf(m, "%d.%03dMB/s transfers", mb, speed % 1000);
110 else
111 seq_printf(m, "%dKB/s transfers", speed);
112
113 if (freq != 0) {
114 seq_printf(m, " (%d.%03dMHz%s, offset %d",
115 freq / 1000, freq % 1000,
116 (tinfo->ppr_options & MSG_EXT_PPR_DT_REQ) != 0
117 ? " DT" : "", tinfo->offset);
118 }
119
120 if (tinfo->width > 0) {
121 if (freq != 0) {
122 seq_puts(m, ", ");
123 } else {
124 seq_puts(m, " (");
125 }
126 seq_printf(m, "%dbit)", 8 * (0x01 << tinfo->width));
127 } else if (freq != 0) {
128 seq_putc(m, ')');
129 }
130 seq_putc(m, '\n');
131 }
132
133 static void
ahc_dump_target_state(struct ahc_softc * ahc,struct seq_file * m,u_int our_id,char channel,u_int target_id,u_int target_offset)134 ahc_dump_target_state(struct ahc_softc *ahc, struct seq_file *m,
135 u_int our_id, char channel, u_int target_id,
136 u_int target_offset)
137 {
138 struct scsi_target *starget;
139 struct ahc_initiator_tinfo *tinfo;
140 struct ahc_tmode_tstate *tstate;
141 int lun;
142
143 tinfo = ahc_fetch_transinfo(ahc, channel, our_id,
144 target_id, &tstate);
145 if ((ahc->features & AHC_TWIN) != 0)
146 seq_printf(m, "Channel %c ", channel);
147 seq_printf(m, "Target %d Negotiation Settings\n", target_id);
148 seq_puts(m, "\tUser: ");
149 ahc_format_transinfo(m, &tinfo->user);
150 starget = ahc->platform_data->starget[target_offset];
151 if (!starget)
152 return;
153
154 seq_puts(m, "\tGoal: ");
155 ahc_format_transinfo(m, &tinfo->goal);
156 seq_puts(m, "\tCurr: ");
157 ahc_format_transinfo(m, &tinfo->curr);
158
159 for (lun = 0; lun < AHC_NUM_LUNS; lun++) {
160 struct scsi_device *sdev;
161
162 sdev = scsi_device_lookup_by_target(starget, lun);
163
164 if (sdev == NULL)
165 continue;
166
167 ahc_dump_device_state(m, sdev);
168 }
169 }
170
171 static void
ahc_dump_device_state(struct seq_file * m,struct scsi_device * sdev)172 ahc_dump_device_state(struct seq_file *m, struct scsi_device *sdev)
173 {
174 struct ahc_linux_device *dev = scsi_transport_device_data(sdev);
175
176 seq_printf(m, "\tChannel %c Target %d Lun %d Settings\n",
177 sdev->sdev_target->channel + 'A',
178 sdev->sdev_target->id, (u8)sdev->lun);
179
180 seq_printf(m, "\t\tCommands Queued %ld\n", dev->commands_issued);
181 seq_printf(m, "\t\tCommands Active %d\n", dev->active);
182 seq_printf(m, "\t\tCommand Openings %d\n", dev->openings);
183 seq_printf(m, "\t\tMax Tagged Openings %d\n", dev->maxtags);
184 seq_printf(m, "\t\tDevice Queue Frozen Count %d\n", dev->qfrozen);
185 }
186
187 int
ahc_proc_write_seeprom(struct Scsi_Host * shost,char * buffer,int length)188 ahc_proc_write_seeprom(struct Scsi_Host *shost, char *buffer, int length)
189 {
190 struct ahc_softc *ahc = *(struct ahc_softc **)shost->hostdata;
191 struct seeprom_descriptor sd;
192 int have_seeprom;
193 u_long s;
194 int paused;
195 int written;
196
197 /* Default to failure. */
198 written = -EINVAL;
199 ahc_lock(ahc, &s);
200 paused = ahc_is_paused(ahc);
201 if (!paused)
202 ahc_pause(ahc);
203
204 if (length != sizeof(struct seeprom_config)) {
205 printk("ahc_proc_write_seeprom: incorrect buffer size\n");
206 goto done;
207 }
208
209 have_seeprom = ahc_verify_cksum((struct seeprom_config*)buffer);
210 if (have_seeprom == 0) {
211 printk("ahc_proc_write_seeprom: cksum verification failed\n");
212 goto done;
213 }
214
215 sd.sd_ahc = ahc;
216 #if AHC_PCI_CONFIG > 0
217 if ((ahc->chip & AHC_PCI) != 0) {
218 sd.sd_control_offset = SEECTL;
219 sd.sd_status_offset = SEECTL;
220 sd.sd_dataout_offset = SEECTL;
221 if (ahc->flags & AHC_LARGE_SEEPROM)
222 sd.sd_chip = C56_66;
223 else
224 sd.sd_chip = C46;
225 sd.sd_MS = SEEMS;
226 sd.sd_RDY = SEERDY;
227 sd.sd_CS = SEECS;
228 sd.sd_CK = SEECK;
229 sd.sd_DO = SEEDO;
230 sd.sd_DI = SEEDI;
231 have_seeprom = ahc_acquire_seeprom(ahc, &sd);
232 } else
233 #endif
234 if ((ahc->chip & AHC_VL) != 0) {
235 sd.sd_control_offset = SEECTL_2840;
236 sd.sd_status_offset = STATUS_2840;
237 sd.sd_dataout_offset = STATUS_2840;
238 sd.sd_chip = C46;
239 sd.sd_MS = 0;
240 sd.sd_RDY = EEPROM_TF;
241 sd.sd_CS = CS_2840;
242 sd.sd_CK = CK_2840;
243 sd.sd_DO = DO_2840;
244 sd.sd_DI = DI_2840;
245 have_seeprom = TRUE;
246 } else {
247 printk("ahc_proc_write_seeprom: unsupported adapter type\n");
248 goto done;
249 }
250
251 if (!have_seeprom) {
252 printk("ahc_proc_write_seeprom: No Serial EEPROM\n");
253 goto done;
254 } else {
255 u_int start_addr;
256
257 if (ahc->seep_config == NULL) {
258 ahc->seep_config = kmalloc(sizeof(*ahc->seep_config),
259 GFP_ATOMIC);
260 if (ahc->seep_config == NULL) {
261 printk("aic7xxx: Unable to allocate serial "
262 "eeprom buffer. Write failing\n");
263 goto done;
264 }
265 }
266 printk("aic7xxx: Writing Serial EEPROM\n");
267 start_addr = 32 * (ahc->channel - 'A');
268 ahc_write_seeprom(&sd, (u_int16_t *)buffer, start_addr,
269 sizeof(struct seeprom_config)/2);
270 ahc_read_seeprom(&sd, (uint16_t *)ahc->seep_config,
271 start_addr, sizeof(struct seeprom_config)/2);
272 #if AHC_PCI_CONFIG > 0
273 if ((ahc->chip & AHC_VL) == 0)
274 ahc_release_seeprom(&sd);
275 #endif
276 written = length;
277 }
278
279 done:
280 if (!paused)
281 ahc_unpause(ahc);
282 ahc_unlock(ahc, &s);
283 return (written);
284 }
285
286 /*
287 * Return information to handle /proc support for the driver.
288 */
289 int
ahc_linux_show_info(struct seq_file * m,struct Scsi_Host * shost)290 ahc_linux_show_info(struct seq_file *m, struct Scsi_Host *shost)
291 {
292 struct ahc_softc *ahc = *(struct ahc_softc **)shost->hostdata;
293 char ahc_info[256];
294 u_int max_targ;
295 u_int i;
296
297 seq_printf(m, "Adaptec AIC7xxx driver version: %s\n",
298 AIC7XXX_DRIVER_VERSION);
299 seq_printf(m, "%s\n", ahc->description);
300 ahc_controller_info(ahc, ahc_info);
301 seq_printf(m, "%s\n", ahc_info);
302 seq_printf(m, "Allocated SCBs: %d, SG List Length: %d\n\n",
303 ahc->scb_data->numscbs, AHC_NSEG);
304
305
306 if (ahc->seep_config == NULL)
307 seq_puts(m, "No Serial EEPROM\n");
308 else {
309 seq_puts(m, "Serial EEPROM:\n");
310 for (i = 0; i < sizeof(*ahc->seep_config)/2; i++) {
311 if (((i % 8) == 0) && (i != 0)) {
312 seq_putc(m, '\n');
313 }
314 seq_printf(m, "0x%.4x ",
315 ((uint16_t*)ahc->seep_config)[i]);
316 }
317 seq_putc(m, '\n');
318 }
319 seq_putc(m, '\n');
320
321 max_targ = 16;
322 if ((ahc->features & (AHC_WIDE|AHC_TWIN)) == 0)
323 max_targ = 8;
324
325 for (i = 0; i < max_targ; i++) {
326 u_int our_id;
327 u_int target_id;
328 char channel;
329
330 channel = 'A';
331 our_id = ahc->our_id;
332 target_id = i;
333 if (i > 7 && (ahc->features & AHC_TWIN) != 0) {
334 channel = 'B';
335 our_id = ahc->our_id_b;
336 target_id = i % 8;
337 }
338
339 ahc_dump_target_state(ahc, m, our_id,
340 channel, target_id, i);
341 }
342 return 0;
343 }
344