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1c57e86d EC |
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 | |
1a4f550a | 11 | ** E-mail: support@areca.com.tw |
1c57e86d EC |
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> | |
1a4f550a | 52 | #include <linux/pci.h> |
1c57e86d EC |
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 | ||
ee959b00 | 60 | struct device_attribute *arcmsr_host_attrs[]; |
1c57e86d | 61 | |
685b9e02 JB |
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) | |
1c57e86d | 66 | { |
ee959b00 TJ |
67 | struct device *dev = container_of(kobj,struct device,kobj); |
68 | struct Scsi_Host *host = class_to_shost(dev); | |
1c57e86d | 69 | struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata; |
1c57e86d EC |
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) { | |
80da1adb AV |
88 | struct QBUFFER __iomem *prbuffer; |
89 | uint8_t __iomem *iop_data; | |
1c57e86d EC |
90 | int32_t iop_len; |
91 | ||
92 | acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW; | |
1a4f550a | 93 | prbuffer = arcmsr_get_iop_rqbuffer(acb); |
80da1adb | 94 | iop_data = prbuffer->data; |
1c57e86d EC |
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 | } | |
1a4f550a | 103 | arcmsr_iop_message_read(acb); |
1c57e86d EC |
104 | } |
105 | return (allxfer_len); | |
106 | } | |
107 | ||
685b9e02 JB |
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) | |
1c57e86d | 112 | { |
ee959b00 TJ |
113 | struct device *dev = container_of(kobj,struct device,kobj); |
114 | struct Scsi_Host *host = class_to_shost(dev); | |
1c57e86d EC |
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) { | |
1a4f550a | 129 | arcmsr_post_ioctldata2iop(acb); |
1c57e86d EC |
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; | |
1a4f550a | 147 | arcmsr_post_ioctldata2iop(acb); |
1c57e86d EC |
148 | } |
149 | return count; | |
150 | } else { | |
151 | return 0; /*need retry*/ | |
152 | } | |
153 | } | |
154 | } | |
155 | ||
685b9e02 JB |
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) | |
1c57e86d | 160 | { |
ee959b00 TJ |
161 | struct device *dev = container_of(kobj,struct device,kobj); |
162 | struct Scsi_Host *host = class_to_shost(dev); | |
1c57e86d | 163 | struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata; |
1c57e86d EC |
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; | |
1a4f550a | 171 | arcmsr_iop_message_read(acb); |
1c57e86d EC |
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 , | |
1a4f550a | 192 | .owner = THIS_MODULE, |
1c57e86d EC |
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, | |
1a4f550a | 202 | .owner = THIS_MODULE, |
1c57e86d EC |
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, | |
1a4f550a | 212 | .owner = THIS_MODULE, |
1c57e86d EC |
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 | ||
ee959b00 | 223 | error = sysfs_create_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_read_attr); |
1c57e86d EC |
224 | if (error) { |
225 | printk(KERN_ERR "arcmsr: alloc sysfs mu_read failed\n"); | |
226 | goto error_bin_file_message_read; | |
227 | } | |
ee959b00 | 228 | error = sysfs_create_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_write_attr); |
1c57e86d EC |
229 | if (error) { |
230 | printk(KERN_ERR "arcmsr: alloc sysfs mu_write failed\n"); | |
231 | goto error_bin_file_message_write; | |
232 | } | |
ee959b00 | 233 | error = sysfs_create_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_clear_attr); |
1c57e86d EC |
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: | |
ee959b00 | 240 | sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_write_attr); |
1c57e86d | 241 | error_bin_file_message_write: |
ee959b00 | 242 | sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_read_attr); |
1c57e86d EC |
243 | error_bin_file_message_read: |
244 | return error; | |
245 | } | |
246 | ||
ee959b00 TJ |
247 | void arcmsr_free_sysfs_attr(struct AdapterControlBlock *acb) |
248 | { | |
1c57e86d | 249 | struct Scsi_Host *host = acb->host; |
1c57e86d | 250 | |
ee959b00 TJ |
251 | sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_clear_attr); |
252 | sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_write_attr); | |
253 | sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_read_attr); | |
1c57e86d EC |
254 | } |
255 | ||
256 | ||
257 | static ssize_t | |
ee959b00 TJ |
258 | arcmsr_attr_host_driver_version(struct device *dev, |
259 | struct device_attribute *attr, char *buf) | |
260 | { | |
1c57e86d | 261 | return snprintf(buf, PAGE_SIZE, |
d67a70ac | 262 | "%s\n", |
1c57e86d EC |
263 | ARCMSR_DRIVER_VERSION); |
264 | } | |
265 | ||
266 | static ssize_t | |
ee959b00 TJ |
267 | arcmsr_attr_host_driver_posted_cmd(struct device *dev, |
268 | struct device_attribute *attr, char *buf) | |
269 | { | |
270 | struct Scsi_Host *host = class_to_shost(dev); | |
271 | struct AdapterControlBlock *acb = | |
272 | (struct AdapterControlBlock *) host->hostdata; | |
1c57e86d | 273 | return snprintf(buf, PAGE_SIZE, |
d67a70ac | 274 | "%4d\n", |
1c57e86d EC |
275 | atomic_read(&acb->ccboutstandingcount)); |
276 | } | |
277 | ||
278 | static ssize_t | |
ee959b00 TJ |
279 | arcmsr_attr_host_driver_reset(struct device *dev, |
280 | struct device_attribute *attr, char *buf) | |
281 | { | |
282 | struct Scsi_Host *host = class_to_shost(dev); | |
283 | struct AdapterControlBlock *acb = | |
284 | (struct AdapterControlBlock *) host->hostdata; | |
1c57e86d | 285 | return snprintf(buf, PAGE_SIZE, |
d67a70ac | 286 | "%4d\n", |
1c57e86d EC |
287 | acb->num_resets); |
288 | } | |
289 | ||
290 | static ssize_t | |
ee959b00 TJ |
291 | arcmsr_attr_host_driver_abort(struct device *dev, |
292 | struct device_attribute *attr, char *buf) | |
293 | { | |
294 | struct Scsi_Host *host = class_to_shost(dev); | |
295 | struct AdapterControlBlock *acb = | |
296 | (struct AdapterControlBlock *) host->hostdata; | |
1c57e86d | 297 | return snprintf(buf, PAGE_SIZE, |
d67a70ac | 298 | "%4d\n", |
1c57e86d EC |
299 | acb->num_aborts); |
300 | } | |
301 | ||
302 | static ssize_t | |
ee959b00 TJ |
303 | arcmsr_attr_host_fw_model(struct device *dev, struct device_attribute *attr, |
304 | char *buf) | |
305 | { | |
306 | struct Scsi_Host *host = class_to_shost(dev); | |
307 | struct AdapterControlBlock *acb = | |
308 | (struct AdapterControlBlock *) host->hostdata; | |
1c57e86d | 309 | return snprintf(buf, PAGE_SIZE, |
d67a70ac | 310 | "%s\n", |
1c57e86d EC |
311 | acb->firm_model); |
312 | } | |
313 | ||
314 | static ssize_t | |
ee959b00 TJ |
315 | arcmsr_attr_host_fw_version(struct device *dev, |
316 | struct device_attribute *attr, char *buf) | |
317 | { | |
318 | struct Scsi_Host *host = class_to_shost(dev); | |
319 | struct AdapterControlBlock *acb = | |
320 | (struct AdapterControlBlock *) host->hostdata; | |
1c57e86d EC |
321 | |
322 | return snprintf(buf, PAGE_SIZE, | |
d67a70ac | 323 | "%s\n", |
1c57e86d EC |
324 | acb->firm_version); |
325 | } | |
326 | ||
327 | static ssize_t | |
ee959b00 TJ |
328 | arcmsr_attr_host_fw_request_len(struct device *dev, |
329 | struct device_attribute *attr, char *buf) | |
330 | { | |
331 | struct Scsi_Host *host = class_to_shost(dev); | |
332 | struct AdapterControlBlock *acb = | |
333 | (struct AdapterControlBlock *) host->hostdata; | |
1c57e86d EC |
334 | |
335 | return snprintf(buf, PAGE_SIZE, | |
d67a70ac | 336 | "%4d\n", |
1c57e86d EC |
337 | acb->firm_request_len); |
338 | } | |
339 | ||
340 | static ssize_t | |
ee959b00 TJ |
341 | arcmsr_attr_host_fw_numbers_queue(struct device *dev, |
342 | struct device_attribute *attr, char *buf) | |
343 | { | |
344 | struct Scsi_Host *host = class_to_shost(dev); | |
345 | struct AdapterControlBlock *acb = | |
346 | (struct AdapterControlBlock *) host->hostdata; | |
1c57e86d EC |
347 | |
348 | return snprintf(buf, PAGE_SIZE, | |
d67a70ac | 349 | "%4d\n", |
1c57e86d EC |
350 | acb->firm_numbers_queue); |
351 | } | |
352 | ||
353 | static ssize_t | |
ee959b00 TJ |
354 | arcmsr_attr_host_fw_sdram_size(struct device *dev, |
355 | struct device_attribute *attr, char *buf) | |
356 | { | |
357 | struct Scsi_Host *host = class_to_shost(dev); | |
358 | struct AdapterControlBlock *acb = | |
359 | (struct AdapterControlBlock *) host->hostdata; | |
1c57e86d EC |
360 | |
361 | return snprintf(buf, PAGE_SIZE, | |
d67a70ac | 362 | "%4d\n", |
1c57e86d EC |
363 | acb->firm_sdram_size); |
364 | } | |
365 | ||
366 | static ssize_t | |
ee959b00 TJ |
367 | arcmsr_attr_host_fw_hd_channels(struct device *dev, |
368 | struct device_attribute *attr, char *buf) | |
369 | { | |
370 | struct Scsi_Host *host = class_to_shost(dev); | |
371 | struct AdapterControlBlock *acb = | |
372 | (struct AdapterControlBlock *) host->hostdata; | |
1c57e86d EC |
373 | |
374 | return snprintf(buf, PAGE_SIZE, | |
d67a70ac | 375 | "%4d\n", |
1c57e86d EC |
376 | acb->firm_hd_channels); |
377 | } | |
378 | ||
ee959b00 TJ |
379 | static DEVICE_ATTR(host_driver_version, S_IRUGO, arcmsr_attr_host_driver_version, NULL); |
380 | static DEVICE_ATTR(host_driver_posted_cmd, S_IRUGO, arcmsr_attr_host_driver_posted_cmd, NULL); | |
381 | static DEVICE_ATTR(host_driver_reset, S_IRUGO, arcmsr_attr_host_driver_reset, NULL); | |
382 | static DEVICE_ATTR(host_driver_abort, S_IRUGO, arcmsr_attr_host_driver_abort, NULL); | |
383 | static DEVICE_ATTR(host_fw_model, S_IRUGO, arcmsr_attr_host_fw_model, NULL); | |
384 | static DEVICE_ATTR(host_fw_version, S_IRUGO, arcmsr_attr_host_fw_version, NULL); | |
385 | static DEVICE_ATTR(host_fw_request_len, S_IRUGO, arcmsr_attr_host_fw_request_len, NULL); | |
386 | static DEVICE_ATTR(host_fw_numbers_queue, S_IRUGO, arcmsr_attr_host_fw_numbers_queue, NULL); | |
387 | static DEVICE_ATTR(host_fw_sdram_size, S_IRUGO, arcmsr_attr_host_fw_sdram_size, NULL); | |
388 | static DEVICE_ATTR(host_fw_hd_channels, S_IRUGO, arcmsr_attr_host_fw_hd_channels, NULL); | |
389 | ||
390 | struct device_attribute *arcmsr_host_attrs[] = { | |
391 | &dev_attr_host_driver_version, | |
392 | &dev_attr_host_driver_posted_cmd, | |
393 | &dev_attr_host_driver_reset, | |
394 | &dev_attr_host_driver_abort, | |
395 | &dev_attr_host_fw_model, | |
396 | &dev_attr_host_fw_version, | |
397 | &dev_attr_host_fw_request_len, | |
398 | &dev_attr_host_fw_numbers_queue, | |
399 | &dev_attr_host_fw_sdram_size, | |
400 | &dev_attr_host_fw_hd_channels, | |
1c57e86d EC |
401 | NULL, |
402 | }; |