Automatic merge of /spare/repo/netdev-2.6 branch airo
[linux-2.6] / drivers / scsi / aic7xxx / aic79xx_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/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 }