1 /*
2 *******************************************************************************
3 ** O.S : Linux
4 ** FILE NAME : arcmsr_attr.c
5 ** BY : Erich Chen
6 ** Description: attributes exported to sysfs and device host
7 *******************************************************************************
8 ** Copyright (C) 2002 - 2005, Areca Technology Corporation All rights reserved
9 **
10 ** Web site: www.areca.com.tw
11 ** E-mail: support@areca.com.tw
12 **
13 ** This program is free software; you can redistribute it and/or modify
14 ** it under the terms of the GNU General Public License version 2 as
15 ** published by the Free Software Foundation.
16 ** This program is distributed in the hope that it will be useful,
17 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
18 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 ** GNU General Public License for more details.
20 *******************************************************************************
21 ** Redistribution and use in source and binary forms, with or without
22 ** modification, are permitted provided that the following conditions
23 ** are met:
24 ** 1. Redistributions of source code must retain the above copyright
25 ** notice, this list of conditions and the following disclaimer.
26 ** 2. Redistributions in binary form must reproduce the above copyright
27 ** notice, this list of conditions and the following disclaimer in the
28 ** documentation and/or other materials provided with the distribution.
29 ** 3. The name of the author may not be used to endorse or promote products
30 ** derived from this software without specific prior written permission.
31 **
32 ** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
33 ** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
34 ** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
35 ** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
36 ** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES(INCLUDING,BUT
37 ** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
38 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION)HOWEVER CAUSED AND ON ANY
39 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
40 ** (INCLUDING NEGLIGENCE OR OTHERWISE)ARISING IN ANY WAY OUT OF THE USE OF
41 ** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
42 *******************************************************************************
43 ** For history of changes, see Documentation/scsi/ChangeLog.arcmsr
44 ** Firmware Specification, see Documentation/scsi/arcmsr_spec.txt
45 *******************************************************************************
46 */
47 #include <linux/module.h>
48 #include <linux/kernel.h>
49 #include <linux/init.h>
50 #include <linux/errno.h>
51 #include <linux/delay.h>
52 #include <linux/pci.h>
53
54 #include <scsi/scsi_cmnd.h>
55 #include <scsi/scsi_device.h>
56 #include <scsi/scsi_host.h>
57 #include <scsi/scsi_transport.h>
58 #include "arcmsr.h"
59
60 struct class_device_attribute *arcmsr_host_attrs[];
61
62 static ssize_t arcmsr_sysfs_iop_message_read(struct kobject *kobj,
63 struct bin_attribute *bin,
64 char *buf, loff_t off,
65 size_t count)
66 {
67 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
68 struct Scsi_Host *host = class_to_shost(cdev);
69 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
70 uint8_t *pQbuffer,*ptmpQbuffer;
71 int32_t allxfer_len = 0;
72
73 if (!capable(CAP_SYS_ADMIN))
74 return -EACCES;
75
76 /* do message unit read. */
77 ptmpQbuffer = (uint8_t *)buf;
78 while ((acb->rqbuf_firstindex != acb->rqbuf_lastindex)
79 && (allxfer_len < 1031)) {
80 pQbuffer = &acb->rqbuffer[acb->rqbuf_firstindex];
81 memcpy(ptmpQbuffer, pQbuffer, 1);
82 acb->rqbuf_firstindex++;
83 acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
84 ptmpQbuffer++;
85 allxfer_len++;
86 }
87 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
88 struct QBUFFER __iomem *prbuffer;
89 uint8_t __iomem *iop_data;
90 int32_t iop_len;
91
92 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
93 prbuffer = arcmsr_get_iop_rqbuffer(acb);
94 iop_data = prbuffer->data;
95 iop_len = readl(&prbuffer->data_len);
96 while (iop_len > 0) {
97 acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data);
98 acb->rqbuf_lastindex++;
99 acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
100 iop_data++;
101 iop_len--;
102 }
103 arcmsr_iop_message_read(acb);
104 }
105 return (allxfer_len);
106 }
107
108 static ssize_t arcmsr_sysfs_iop_message_write(struct kobject *kobj,
109 struct bin_attribute *bin,
110 char *buf, loff_t off,
111 size_t count)
112 {
113 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
114 struct Scsi_Host *host = class_to_shost(cdev);
115 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
116 int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex;
117 uint8_t *pQbuffer, *ptmpuserbuffer;
118
119 if (!capable(CAP_SYS_ADMIN))
120 return -EACCES;
121 if (count > 1032)
122 return -EINVAL;
123 /* do message unit write. */
124 ptmpuserbuffer = (uint8_t *)buf;
125 user_len = (int32_t)count;
126 wqbuf_lastindex = acb->wqbuf_lastindex;
127 wqbuf_firstindex = acb->wqbuf_firstindex;
128 if (wqbuf_lastindex != wqbuf_firstindex) {
129 arcmsr_post_ioctldata2iop(acb);
130 return 0; /*need retry*/
131 } else {
132 my_empty_len = (wqbuf_firstindex-wqbuf_lastindex - 1)
133 &(ARCMSR_MAX_QBUFFER - 1);
134 if (my_empty_len >= user_len) {
135 while (user_len > 0) {
136 pQbuffer =
137 &acb->wqbuffer[acb->wqbuf_lastindex];
138 memcpy(pQbuffer, ptmpuserbuffer, 1);
139 acb->wqbuf_lastindex++;
140 acb->wqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
141 ptmpuserbuffer++;
142 user_len--;
143 }
144 if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) {
145 acb->acb_flags &=
146 ~ACB_F_MESSAGE_WQBUFFER_CLEARED;
147 arcmsr_post_ioctldata2iop(acb);
148 }
149 return count;
150 } else {
151 return 0; /*need retry*/
152 }
153 }
154 }
155
156 static ssize_t arcmsr_sysfs_iop_message_clear(struct kobject *kobj,
157 struct bin_attribute *bin,
158 char *buf, loff_t off,
159 size_t count)
160 {
161 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
162 struct Scsi_Host *host = class_to_shost(cdev);
163 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
164 uint8_t *pQbuffer;
165
166 if (!capable(CAP_SYS_ADMIN))
167 return -EACCES;
168
169 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
170 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
171 arcmsr_iop_message_read(acb);
172 }
173 acb->acb_flags |=
174 (ACB_F_MESSAGE_WQBUFFER_CLEARED
175 | ACB_F_MESSAGE_RQBUFFER_CLEARED
176 | ACB_F_MESSAGE_WQBUFFER_READED);
177 acb->rqbuf_firstindex = 0;
178 acb->rqbuf_lastindex = 0;
179 acb->wqbuf_firstindex = 0;
180 acb->wqbuf_lastindex = 0;
181 pQbuffer = acb->rqbuffer;
182 memset(pQbuffer, 0, sizeof (struct QBUFFER));
183 pQbuffer = acb->wqbuffer;
184 memset(pQbuffer, 0, sizeof (struct QBUFFER));
185 return 1;
186 }
187
188 static struct bin_attribute arcmsr_sysfs_message_read_attr = {
189 .attr = {
190 .name = "mu_read",
191 .mode = S_IRUSR ,
192 .owner = THIS_MODULE,
193 },
194 .size = 1032,
195 .read = arcmsr_sysfs_iop_message_read,
196 };
197
198 static struct bin_attribute arcmsr_sysfs_message_write_attr = {
199 .attr = {
200 .name = "mu_write",
201 .mode = S_IWUSR,
202 .owner = THIS_MODULE,
203 },
204 .size = 1032,
205 .write = arcmsr_sysfs_iop_message_write,
206 };
207
208 static struct bin_attribute arcmsr_sysfs_message_clear_attr = {
209 .attr = {
210 .name = "mu_clear",
211 .mode = S_IWUSR,
212 .owner = THIS_MODULE,
213 },
214 .size = 1,
215 .write = arcmsr_sysfs_iop_message_clear,
216 };
217
218 int arcmsr_alloc_sysfs_attr(struct AdapterControlBlock *acb)
219 {
220 struct Scsi_Host *host = acb->host;
221 int error;
222
223 error = sysfs_create_bin_file(&host->shost_classdev.kobj, &arcmsr_sysfs_message_read_attr);
224 if (error) {
225 printk(KERN_ERR "arcmsr: alloc sysfs mu_read failed\n");
226 goto error_bin_file_message_read;
227 }
228 error = sysfs_create_bin_file(&host->shost_classdev.kobj, &arcmsr_sysfs_message_write_attr);
229 if (error) {
230 printk(KERN_ERR "arcmsr: alloc sysfs mu_write failed\n");
231 goto error_bin_file_message_write;
232 }
233 error = sysfs_create_bin_file(&host->shost_classdev.kobj, &arcmsr_sysfs_message_clear_attr);
234 if (error) {
235 printk(KERN_ERR "arcmsr: alloc sysfs mu_clear failed\n");
236 goto error_bin_file_message_clear;
237 }
238 return 0;
239 error_bin_file_message_clear:
240 sysfs_remove_bin_file(&host->shost_classdev.kobj, &arcmsr_sysfs_message_write_attr);
241 error_bin_file_message_write:
242 sysfs_remove_bin_file(&host->shost_classdev.kobj, &arcmsr_sysfs_message_read_attr);
243 error_bin_file_message_read:
244 return error;
245 }
246
247 void
248 arcmsr_free_sysfs_attr(struct AdapterControlBlock *acb) {
249 struct Scsi_Host *host = acb->host;
250
251 sysfs_remove_bin_file(&host->shost_classdev.kobj, &arcmsr_sysfs_message_clear_attr);
252 sysfs_remove_bin_file(&host->shost_classdev.kobj, &arcmsr_sysfs_message_write_attr);
253 sysfs_remove_bin_file(&host->shost_classdev.kobj, &arcmsr_sysfs_message_read_attr);
254 }
255
256
257 static ssize_t
258 arcmsr_attr_host_driver_version(struct class_device *cdev, char *buf) {
259 return snprintf(buf, PAGE_SIZE,
260 "%s\n",
261 ARCMSR_DRIVER_VERSION);
262 }
263
264 static ssize_t
265 arcmsr_attr_host_driver_posted_cmd(struct class_device *cdev, char *buf) {
266 struct Scsi_Host *host = class_to_shost(cdev);
267 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
268 return snprintf(buf, PAGE_SIZE,
269 "%4d\n",
270 atomic_read(&acb->ccboutstandingcount));
271 }
272
273 static ssize_t
274 arcmsr_attr_host_driver_reset(struct class_device *cdev, char *buf) {
275 struct Scsi_Host *host = class_to_shost(cdev);
276 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
277 return snprintf(buf, PAGE_SIZE,
278 "%4d\n",
279 acb->num_resets);
280 }
281
282 static ssize_t
283 arcmsr_attr_host_driver_abort(struct class_device *cdev, char *buf) {
284 struct Scsi_Host *host = class_to_shost(cdev);
285 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
286 return snprintf(buf, PAGE_SIZE,
287 "%4d\n",
288 acb->num_aborts);
289 }
290
291 static ssize_t
292 arcmsr_attr_host_fw_model(struct class_device *cdev, char *buf) {
293 struct Scsi_Host *host = class_to_shost(cdev);
294 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
295 return snprintf(buf, PAGE_SIZE,
296 "%s\n",
297 acb->firm_model);
298 }
299
300 static ssize_t
301 arcmsr_attr_host_fw_version(struct class_device *cdev, char *buf) {
302 struct Scsi_Host *host = class_to_shost(cdev);
303 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
304
305 return snprintf(buf, PAGE_SIZE,
306 "%s\n",
307 acb->firm_version);
308 }
309
310 static ssize_t
311 arcmsr_attr_host_fw_request_len(struct class_device *cdev, char *buf) {
312 struct Scsi_Host *host = class_to_shost(cdev);
313 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
314
315 return snprintf(buf, PAGE_SIZE,
316 "%4d\n",
317 acb->firm_request_len);
318 }
319
320 static ssize_t
321 arcmsr_attr_host_fw_numbers_queue(struct class_device *cdev, char *buf) {
322 struct Scsi_Host *host = class_to_shost(cdev);
323 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
324
325 return snprintf(buf, PAGE_SIZE,
326 "%4d\n",
327 acb->firm_numbers_queue);
328 }
329
330 static ssize_t
331 arcmsr_attr_host_fw_sdram_size(struct class_device *cdev, char *buf) {
332 struct Scsi_Host *host = class_to_shost(cdev);
333 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
334
335 return snprintf(buf, PAGE_SIZE,
336 "%4d\n",
337 acb->firm_sdram_size);
338 }
339
340 static ssize_t
341 arcmsr_attr_host_fw_hd_channels(struct class_device *cdev, char *buf) {
342 struct Scsi_Host *host = class_to_shost(cdev);
343 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
344
345 return snprintf(buf, PAGE_SIZE,
346 "%4d\n",
347 acb->firm_hd_channels);
348 }
349
350 static CLASS_DEVICE_ATTR(host_driver_version, S_IRUGO, arcmsr_attr_host_driver_version, NULL);
351 static CLASS_DEVICE_ATTR(host_driver_posted_cmd, S_IRUGO, arcmsr_attr_host_driver_posted_cmd, NULL);
352 static CLASS_DEVICE_ATTR(host_driver_reset, S_IRUGO, arcmsr_attr_host_driver_reset, NULL);
353 static CLASS_DEVICE_ATTR(host_driver_abort, S_IRUGO, arcmsr_attr_host_driver_abort, NULL);
354 static CLASS_DEVICE_ATTR(host_fw_model, S_IRUGO, arcmsr_attr_host_fw_model, NULL);
355 static CLASS_DEVICE_ATTR(host_fw_version, S_IRUGO, arcmsr_attr_host_fw_version, NULL);
356 static CLASS_DEVICE_ATTR(host_fw_request_len, S_IRUGO, arcmsr_attr_host_fw_request_len, NULL);
357 static CLASS_DEVICE_ATTR(host_fw_numbers_queue, S_IRUGO, arcmsr_attr_host_fw_numbers_queue, NULL);
358 static CLASS_DEVICE_ATTR(host_fw_sdram_size, S_IRUGO, arcmsr_attr_host_fw_sdram_size, NULL);
359 static CLASS_DEVICE_ATTR(host_fw_hd_channels, S_IRUGO, arcmsr_attr_host_fw_hd_channels, NULL);
360
361 struct class_device_attribute *arcmsr_host_attrs[] = {
362 &class_device_attr_host_driver_version,
363 &class_device_attr_host_driver_posted_cmd,
364 &class_device_attr_host_driver_reset,
365 &class_device_attr_host_driver_abort,
366 &class_device_attr_host_fw_model,
367 &class_device_attr_host_fw_version,
368 &class_device_attr_host_fw_request_len,
369 &class_device_attr_host_fw_numbers_queue,
370 &class_device_attr_host_fw_sdram_size,
371 &class_device_attr_host_fw_hd_channels,
372 NULL,
373 };
374
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