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[linux-2.6.git] / drivers / scsi / aic7xxx / aic7xxx_proc.c
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     copy_mem_info(struct info_str *info, char *data, int len);
47 static int      copy_info(struct info_str *info, char *fmt, ...);
48 static void     ahc_dump_target_state(struct ahc_softc *ahc,
49                                       struct info_str *info,
50                                       u_int our_id, char channel,
51                                       u_int target_id, u_int target_offset);
52 static void     ahc_dump_device_state(struct info_str *info,
53                                       struct ahc_linux_device *dev);
54 static int      ahc_proc_write_seeprom(struct ahc_softc *ahc,
55                                        char *buffer, int length);
56
57 static void
58 copy_mem_info(struct info_str *info, char *data, int len)
59 {
60         if (info->pos + len > info->offset + info->length)
61                 len = info->offset + info->length - info->pos;
62
63         if (info->pos + len < info->offset) {
64                 info->pos += len;
65                 return;
66         }
67
68         if (info->pos < info->offset) {
69                 off_t partial;
70
71                 partial = info->offset - info->pos;
72                 data += partial;
73                 info->pos += partial;
74                 len  -= partial;
75         }
76
77         if (len > 0) {
78                 memcpy(info->buffer, data, len);
79                 info->pos += len;
80                 info->buffer += len;
81         }
82 }
83
84 static int
85 copy_info(struct info_str *info, char *fmt, ...)
86 {
87         va_list args;
88         char buf[256];
89         int len;
90
91         va_start(args, fmt);
92         len = vsprintf(buf, fmt, args);
93         va_end(args);
94
95         copy_mem_info(info, buf, len);
96         return (len);
97 }
98
99 void
100 ahc_format_transinfo(struct info_str *info, struct ahc_transinfo *tinfo)
101 {
102         u_int speed;
103         u_int freq;
104         u_int mb;
105
106         speed = 3300;
107         freq = 0;
108         if (tinfo->offset != 0) {
109                 freq = aic_calc_syncsrate(tinfo->period);
110                 speed = freq;
111         }
112         speed *= (0x01 << tinfo->width);
113         mb = speed / 1000;
114         if (mb > 0)
115                 copy_info(info, "%d.%03dMB/s transfers", mb, speed % 1000);
116         else
117                 copy_info(info, "%dKB/s transfers", speed);
118
119         if (freq != 0) {
120                 copy_info(info, " (%d.%03dMHz%s, offset %d",
121                          freq / 1000, freq % 1000,
122                          (tinfo->ppr_options & MSG_EXT_PPR_DT_REQ) != 0
123                          ? " DT" : "", tinfo->offset);
124         }
125
126         if (tinfo->width > 0) {
127                 if (freq != 0) {
128                         copy_info(info, ", ");
129                 } else {
130                         copy_info(info, " (");
131                 }
132                 copy_info(info, "%dbit)", 8 * (0x01 << tinfo->width));
133         } else if (freq != 0) {
134                 copy_info(info, ")");
135         }
136         copy_info(info, "\n");
137 }
138
139 static void
140 ahc_dump_target_state(struct ahc_softc *ahc, struct info_str *info,
141                       u_int our_id, char channel, u_int target_id,
142                       u_int target_offset)
143 {
144         struct  ahc_linux_target *targ;
145         struct  ahc_initiator_tinfo *tinfo;
146         struct  ahc_tmode_tstate *tstate;
147         int     lun;
148
149         tinfo = ahc_fetch_transinfo(ahc, channel, our_id,
150                                     target_id, &tstate);
151         if ((ahc->features & AHC_TWIN) != 0)
152                 copy_info(info, "Channel %c ", channel);
153         copy_info(info, "Target %d Negotiation Settings\n", target_id);
154         copy_info(info, "\tUser: ");
155         ahc_format_transinfo(info, &tinfo->user);
156         targ = ahc->platform_data->targets[target_offset];
157         if (targ == NULL)
158                 return;
159
160         copy_info(info, "\tGoal: ");
161         ahc_format_transinfo(info, &tinfo->goal);
162         copy_info(info, "\tCurr: ");
163         ahc_format_transinfo(info, &tinfo->curr);
164
165         for (lun = 0; lun < AHC_NUM_LUNS; lun++) {
166                 struct ahc_linux_device *dev;
167
168                 dev = targ->devices[lun];
169
170                 if (dev == NULL)
171                         continue;
172
173                 ahc_dump_device_state(info, dev);
174         }
175 }
176
177 static void
178 ahc_dump_device_state(struct info_str *info, struct ahc_linux_device *dev)
179 {
180         copy_info(info, "\tChannel %c Target %d Lun %d Settings\n",
181                   dev->target->channel + 'A', dev->target->target, dev->lun);
182
183         copy_info(info, "\t\tCommands Queued %ld\n", dev->commands_issued);
184         copy_info(info, "\t\tCommands Active %d\n", dev->active);
185         copy_info(info, "\t\tCommand Openings %d\n", dev->openings);
186         copy_info(info, "\t\tMax Tagged Openings %d\n", dev->maxtags);
187         copy_info(info, "\t\tDevice Queue Frozen Count %d\n", dev->qfrozen);
188 }
189
190 static int
191 ahc_proc_write_seeprom(struct ahc_softc *ahc, char *buffer, int length)
192 {
193         struct seeprom_descriptor sd;
194         int have_seeprom;
195         u_long s;
196         int paused;
197         int written;
198
199         /* Default to failure. */
200         written = -EINVAL;
201         ahc_lock(ahc, &s);
202         paused = ahc_is_paused(ahc);
203         if (!paused)
204                 ahc_pause(ahc);
205
206         if (length != sizeof(struct seeprom_config)) {
207                 printf("ahc_proc_write_seeprom: incorrect buffer size\n");
208                 goto done;
209         }
210
211         have_seeprom = ahc_verify_cksum((struct seeprom_config*)buffer);
212         if (have_seeprom == 0) {
213                 printf("ahc_proc_write_seeprom: cksum verification failed\n");
214                 goto done;
215         }
216
217         sd.sd_ahc = ahc;
218 #if AHC_PCI_CONFIG > 0
219         if ((ahc->chip & AHC_PCI) != 0) {
220                 sd.sd_control_offset = SEECTL;
221                 sd.sd_status_offset = SEECTL;
222                 sd.sd_dataout_offset = SEECTL;
223                 if (ahc->flags & AHC_LARGE_SEEPROM)
224                         sd.sd_chip = C56_66;
225                 else
226                         sd.sd_chip = C46;
227                 sd.sd_MS = SEEMS;
228                 sd.sd_RDY = SEERDY;
229                 sd.sd_CS = SEECS;
230                 sd.sd_CK = SEECK;
231                 sd.sd_DO = SEEDO;
232                 sd.sd_DI = SEEDI;
233                 have_seeprom = ahc_acquire_seeprom(ahc, &sd);
234         } else
235 #endif
236         if ((ahc->chip & AHC_VL) != 0) {
237                 sd.sd_control_offset = SEECTL_2840;
238                 sd.sd_status_offset = STATUS_2840;
239                 sd.sd_dataout_offset = STATUS_2840;             
240                 sd.sd_chip = C46;
241                 sd.sd_MS = 0;
242                 sd.sd_RDY = EEPROM_TF;
243                 sd.sd_CS = CS_2840;
244                 sd.sd_CK = CK_2840;
245                 sd.sd_DO = DO_2840;
246                 sd.sd_DI = DI_2840;
247                 have_seeprom = TRUE;
248         } else {
249                 printf("ahc_proc_write_seeprom: unsupported adapter type\n");
250                 goto done;
251         }
252
253         if (!have_seeprom) {
254                 printf("ahc_proc_write_seeprom: No Serial EEPROM\n");
255                 goto done;
256         } else {
257                 u_int start_addr;
258
259                 if (ahc->seep_config == NULL) {
260                         ahc->seep_config = malloc(sizeof(*ahc->seep_config),
261                                                   M_DEVBUF, M_NOWAIT);
262                         if (ahc->seep_config == NULL) {
263                                 printf("aic7xxx: Unable to allocate serial "
264                                        "eeprom buffer.  Write failing\n");
265                                 goto done;
266                         }
267                 }
268                 printf("aic7xxx: Writing Serial EEPROM\n");
269                 start_addr = 32 * (ahc->channel - 'A');
270                 ahc_write_seeprom(&sd, (u_int16_t *)buffer, start_addr,
271                                   sizeof(struct seeprom_config)/2);
272                 ahc_read_seeprom(&sd, (uint16_t *)ahc->seep_config,
273                                  start_addr, sizeof(struct seeprom_config)/2);
274 #if AHC_PCI_CONFIG > 0
275                 if ((ahc->chip & AHC_VL) == 0)
276                         ahc_release_seeprom(&sd);
277 #endif
278                 written = length;
279         }
280
281 done:
282         if (!paused)
283                 ahc_unpause(ahc);
284         ahc_unlock(ahc, &s);
285         return (written);
286 }
287
288 /*
289  * Return information to handle /proc support for the driver.
290  */
291 int
292 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
293 ahc_linux_proc_info(char *buffer, char **start, off_t offset,
294                     int length, int hostno, int inout)
295 #else
296 ahc_linux_proc_info(struct Scsi_Host *shost, char *buffer, char **start,
297                     off_t offset, int length, int inout)
298 #endif
299 {
300         struct  ahc_softc *ahc;
301         struct  info_str info;
302         char    ahc_info[256];
303         u_long  s;
304         u_int   max_targ;
305         u_int   i;
306         int     retval;
307
308         retval = -EINVAL;
309         ahc_list_lock(&s);
310 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
311         TAILQ_FOREACH(ahc, &ahc_tailq, links) {
312                 if (ahc->platform_data->host->host_no == hostno)
313                         break;
314         }
315 #else
316         ahc = ahc_find_softc(*(struct ahc_softc **)shost->hostdata);
317 #endif
318
319         if (ahc == NULL)
320                 goto done;
321
322          /* Has data been written to the file? */ 
323         if (inout == TRUE) {
324                 retval = ahc_proc_write_seeprom(ahc, buffer, length);
325                 goto done;
326         }
327
328         if (start)
329                 *start = buffer;
330
331         info.buffer     = buffer;
332         info.length     = length;
333         info.offset     = offset;
334         info.pos        = 0;
335
336         copy_info(&info, "Adaptec AIC7xxx driver version: %s\n",
337                   AIC7XXX_DRIVER_VERSION);
338         copy_info(&info, "%s\n", ahc->description);
339         ahc_controller_info(ahc, ahc_info);
340         copy_info(&info, "%s\n", ahc_info);
341         copy_info(&info, "Allocated SCBs: %d, SG List Length: %d\n\n",
342                   ahc->scb_data->numscbs, AHC_NSEG);
343
344
345         if (ahc->seep_config == NULL)
346                 copy_info(&info, "No Serial EEPROM\n");
347         else {
348                 copy_info(&info, "Serial EEPROM:\n");
349                 for (i = 0; i < sizeof(*ahc->seep_config)/2; i++) {
350                         if (((i % 8) == 0) && (i != 0)) {
351                                 copy_info(&info, "\n");
352                         }
353                         copy_info(&info, "0x%.4x ",
354                                   ((uint16_t*)ahc->seep_config)[i]);
355                 }
356                 copy_info(&info, "\n");
357         }
358         copy_info(&info, "\n");
359
360         max_targ = 15;
361         if ((ahc->features & (AHC_WIDE|AHC_TWIN)) == 0)
362                 max_targ = 7;
363
364         for (i = 0; i <= max_targ; i++) {
365                 u_int our_id;
366                 u_int target_id;
367                 char channel;
368
369                 channel = 'A';
370                 our_id = ahc->our_id;
371                 target_id = i;
372                 if (i > 7 && (ahc->features & AHC_TWIN) != 0) {
373                         channel = 'B';
374                         our_id = ahc->our_id_b;
375                         target_id = i % 8;
376                 }
377
378                 ahc_dump_target_state(ahc, &info, our_id,
379                                       channel, target_id, i);
380         }
381         retval = info.pos > info.offset ? info.pos - info.offset : 0;
382 done:
383         ahc_list_unlock(&s);
384         return (retval);
385 }