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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 | |
2c3c8bea CW |
62 | static ssize_t arcmsr_sysfs_iop_message_read(struct file *filp, |
63 | struct kobject *kobj, | |
685b9e02 JB |
64 | struct bin_attribute *bin, |
65 | char *buf, loff_t off, | |
66 | size_t count) | |
1c57e86d | 67 | { |
ee959b00 TJ |
68 | struct device *dev = container_of(kobj,struct device,kobj); |
69 | struct Scsi_Host *host = class_to_shost(dev); | |
1c57e86d | 70 | struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata; |
1c57e86d EC |
71 | uint8_t *pQbuffer,*ptmpQbuffer; |
72 | int32_t allxfer_len = 0; | |
73 | ||
74 | if (!capable(CAP_SYS_ADMIN)) | |
75 | return -EACCES; | |
76 | ||
77 | /* do message unit read. */ | |
78 | ptmpQbuffer = (uint8_t *)buf; | |
79 | while ((acb->rqbuf_firstindex != acb->rqbuf_lastindex) | |
80 | && (allxfer_len < 1031)) { | |
81 | pQbuffer = &acb->rqbuffer[acb->rqbuf_firstindex]; | |
82 | memcpy(ptmpQbuffer, pQbuffer, 1); | |
83 | acb->rqbuf_firstindex++; | |
84 | acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER; | |
85 | ptmpQbuffer++; | |
86 | allxfer_len++; | |
87 | } | |
88 | if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) { | |
80da1adb AV |
89 | struct QBUFFER __iomem *prbuffer; |
90 | uint8_t __iomem *iop_data; | |
1c57e86d EC |
91 | int32_t iop_len; |
92 | ||
93 | acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW; | |
1a4f550a | 94 | prbuffer = arcmsr_get_iop_rqbuffer(acb); |
80da1adb | 95 | iop_data = prbuffer->data; |
1c57e86d EC |
96 | iop_len = readl(&prbuffer->data_len); |
97 | while (iop_len > 0) { | |
98 | acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data); | |
99 | acb->rqbuf_lastindex++; | |
100 | acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER; | |
101 | iop_data++; | |
102 | iop_len--; | |
103 | } | |
1a4f550a | 104 | arcmsr_iop_message_read(acb); |
1c57e86d EC |
105 | } |
106 | return (allxfer_len); | |
107 | } | |
108 | ||
2c3c8bea CW |
109 | static ssize_t arcmsr_sysfs_iop_message_write(struct file *filp, |
110 | struct kobject *kobj, | |
685b9e02 JB |
111 | struct bin_attribute *bin, |
112 | char *buf, loff_t off, | |
113 | size_t count) | |
1c57e86d | 114 | { |
ee959b00 TJ |
115 | struct device *dev = container_of(kobj,struct device,kobj); |
116 | struct Scsi_Host *host = class_to_shost(dev); | |
1c57e86d EC |
117 | struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata; |
118 | int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex; | |
119 | uint8_t *pQbuffer, *ptmpuserbuffer; | |
120 | ||
121 | if (!capable(CAP_SYS_ADMIN)) | |
122 | return -EACCES; | |
123 | if (count > 1032) | |
124 | return -EINVAL; | |
125 | /* do message unit write. */ | |
126 | ptmpuserbuffer = (uint8_t *)buf; | |
127 | user_len = (int32_t)count; | |
128 | wqbuf_lastindex = acb->wqbuf_lastindex; | |
129 | wqbuf_firstindex = acb->wqbuf_firstindex; | |
130 | if (wqbuf_lastindex != wqbuf_firstindex) { | |
1a4f550a | 131 | arcmsr_post_ioctldata2iop(acb); |
1c57e86d EC |
132 | return 0; /*need retry*/ |
133 | } else { | |
134 | my_empty_len = (wqbuf_firstindex-wqbuf_lastindex - 1) | |
135 | &(ARCMSR_MAX_QBUFFER - 1); | |
136 | if (my_empty_len >= user_len) { | |
137 | while (user_len > 0) { | |
138 | pQbuffer = | |
139 | &acb->wqbuffer[acb->wqbuf_lastindex]; | |
140 | memcpy(pQbuffer, ptmpuserbuffer, 1); | |
141 | acb->wqbuf_lastindex++; | |
142 | acb->wqbuf_lastindex %= ARCMSR_MAX_QBUFFER; | |
143 | ptmpuserbuffer++; | |
144 | user_len--; | |
145 | } | |
146 | if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) { | |
147 | acb->acb_flags &= | |
148 | ~ACB_F_MESSAGE_WQBUFFER_CLEARED; | |
1a4f550a | 149 | arcmsr_post_ioctldata2iop(acb); |
1c57e86d EC |
150 | } |
151 | return count; | |
152 | } else { | |
153 | return 0; /*need retry*/ | |
154 | } | |
155 | } | |
156 | } | |
157 | ||
2c3c8bea CW |
158 | static ssize_t arcmsr_sysfs_iop_message_clear(struct file *filp, |
159 | struct kobject *kobj, | |
685b9e02 JB |
160 | struct bin_attribute *bin, |
161 | char *buf, loff_t off, | |
162 | size_t count) | |
1c57e86d | 163 | { |
ee959b00 TJ |
164 | struct device *dev = container_of(kobj,struct device,kobj); |
165 | struct Scsi_Host *host = class_to_shost(dev); | |
1c57e86d | 166 | struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata; |
1c57e86d EC |
167 | uint8_t *pQbuffer; |
168 | ||
169 | if (!capable(CAP_SYS_ADMIN)) | |
170 | return -EACCES; | |
171 | ||
172 | if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) { | |
173 | acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW; | |
1a4f550a | 174 | arcmsr_iop_message_read(acb); |
1c57e86d EC |
175 | } |
176 | acb->acb_flags |= | |
177 | (ACB_F_MESSAGE_WQBUFFER_CLEARED | |
178 | | ACB_F_MESSAGE_RQBUFFER_CLEARED | |
179 | | ACB_F_MESSAGE_WQBUFFER_READED); | |
180 | acb->rqbuf_firstindex = 0; | |
181 | acb->rqbuf_lastindex = 0; | |
182 | acb->wqbuf_firstindex = 0; | |
183 | acb->wqbuf_lastindex = 0; | |
184 | pQbuffer = acb->rqbuffer; | |
185 | memset(pQbuffer, 0, sizeof (struct QBUFFER)); | |
186 | pQbuffer = acb->wqbuffer; | |
187 | memset(pQbuffer, 0, sizeof (struct QBUFFER)); | |
188 | return 1; | |
189 | } | |
190 | ||
191 | static struct bin_attribute arcmsr_sysfs_message_read_attr = { | |
192 | .attr = { | |
193 | .name = "mu_read", | |
194 | .mode = S_IRUSR , | |
36b83ded | 195 | .owner = THIS_MODULE, |
1c57e86d EC |
196 | }, |
197 | .size = 1032, | |
198 | .read = arcmsr_sysfs_iop_message_read, | |
199 | }; | |
200 | ||
201 | static struct bin_attribute arcmsr_sysfs_message_write_attr = { | |
202 | .attr = { | |
203 | .name = "mu_write", | |
204 | .mode = S_IWUSR, | |
36b83ded | 205 | .owner = THIS_MODULE, |
1c57e86d EC |
206 | }, |
207 | .size = 1032, | |
208 | .write = arcmsr_sysfs_iop_message_write, | |
209 | }; | |
210 | ||
211 | static struct bin_attribute arcmsr_sysfs_message_clear_attr = { | |
212 | .attr = { | |
213 | .name = "mu_clear", | |
214 | .mode = S_IWUSR, | |
36b83ded | 215 | .owner = THIS_MODULE, |
1c57e86d EC |
216 | }, |
217 | .size = 1, | |
218 | .write = arcmsr_sysfs_iop_message_clear, | |
219 | }; | |
220 | ||
221 | int arcmsr_alloc_sysfs_attr(struct AdapterControlBlock *acb) | |
222 | { | |
223 | struct Scsi_Host *host = acb->host; | |
224 | int error; | |
225 | ||
ee959b00 | 226 | error = sysfs_create_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_read_attr); |
1c57e86d EC |
227 | if (error) { |
228 | printk(KERN_ERR "arcmsr: alloc sysfs mu_read failed\n"); | |
229 | goto error_bin_file_message_read; | |
230 | } | |
ee959b00 | 231 | error = sysfs_create_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_write_attr); |
1c57e86d EC |
232 | if (error) { |
233 | printk(KERN_ERR "arcmsr: alloc sysfs mu_write failed\n"); | |
234 | goto error_bin_file_message_write; | |
235 | } | |
ee959b00 | 236 | error = sysfs_create_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_clear_attr); |
1c57e86d EC |
237 | if (error) { |
238 | printk(KERN_ERR "arcmsr: alloc sysfs mu_clear failed\n"); | |
239 | goto error_bin_file_message_clear; | |
240 | } | |
241 | return 0; | |
242 | error_bin_file_message_clear: | |
ee959b00 | 243 | sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_write_attr); |
1c57e86d | 244 | error_bin_file_message_write: |
ee959b00 | 245 | sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_read_attr); |
1c57e86d EC |
246 | error_bin_file_message_read: |
247 | return error; | |
248 | } | |
249 | ||
ee959b00 TJ |
250 | void arcmsr_free_sysfs_attr(struct AdapterControlBlock *acb) |
251 | { | |
1c57e86d | 252 | struct Scsi_Host *host = acb->host; |
1c57e86d | 253 | |
ee959b00 TJ |
254 | sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_clear_attr); |
255 | sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_write_attr); | |
256 | sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_read_attr); | |
1c57e86d EC |
257 | } |
258 | ||
259 | ||
260 | static ssize_t | |
ee959b00 TJ |
261 | arcmsr_attr_host_driver_version(struct device *dev, |
262 | struct device_attribute *attr, char *buf) | |
263 | { | |
1c57e86d | 264 | return snprintf(buf, PAGE_SIZE, |
d67a70ac | 265 | "%s\n", |
1c57e86d EC |
266 | ARCMSR_DRIVER_VERSION); |
267 | } | |
268 | ||
269 | static ssize_t | |
ee959b00 TJ |
270 | arcmsr_attr_host_driver_posted_cmd(struct device *dev, |
271 | struct device_attribute *attr, char *buf) | |
272 | { | |
273 | struct Scsi_Host *host = class_to_shost(dev); | |
274 | struct AdapterControlBlock *acb = | |
275 | (struct AdapterControlBlock *) host->hostdata; | |
1c57e86d | 276 | return snprintf(buf, PAGE_SIZE, |
d67a70ac | 277 | "%4d\n", |
1c57e86d EC |
278 | atomic_read(&acb->ccboutstandingcount)); |
279 | } | |
280 | ||
281 | static ssize_t | |
ee959b00 TJ |
282 | arcmsr_attr_host_driver_reset(struct device *dev, |
283 | struct device_attribute *attr, char *buf) | |
284 | { | |
285 | struct Scsi_Host *host = class_to_shost(dev); | |
286 | struct AdapterControlBlock *acb = | |
287 | (struct AdapterControlBlock *) host->hostdata; | |
1c57e86d | 288 | return snprintf(buf, PAGE_SIZE, |
d67a70ac | 289 | "%4d\n", |
1c57e86d EC |
290 | acb->num_resets); |
291 | } | |
292 | ||
293 | static ssize_t | |
ee959b00 TJ |
294 | arcmsr_attr_host_driver_abort(struct device *dev, |
295 | struct device_attribute *attr, char *buf) | |
296 | { | |
297 | struct Scsi_Host *host = class_to_shost(dev); | |
298 | struct AdapterControlBlock *acb = | |
299 | (struct AdapterControlBlock *) host->hostdata; | |
1c57e86d | 300 | return snprintf(buf, PAGE_SIZE, |
d67a70ac | 301 | "%4d\n", |
1c57e86d EC |
302 | acb->num_aborts); |
303 | } | |
304 | ||
305 | static ssize_t | |
ee959b00 TJ |
306 | arcmsr_attr_host_fw_model(struct device *dev, struct device_attribute *attr, |
307 | char *buf) | |
308 | { | |
309 | struct Scsi_Host *host = class_to_shost(dev); | |
310 | struct AdapterControlBlock *acb = | |
311 | (struct AdapterControlBlock *) host->hostdata; | |
1c57e86d | 312 | return snprintf(buf, PAGE_SIZE, |
d67a70ac | 313 | "%s\n", |
1c57e86d EC |
314 | acb->firm_model); |
315 | } | |
316 | ||
317 | static ssize_t | |
ee959b00 TJ |
318 | arcmsr_attr_host_fw_version(struct device *dev, |
319 | struct device_attribute *attr, char *buf) | |
320 | { | |
321 | struct Scsi_Host *host = class_to_shost(dev); | |
322 | struct AdapterControlBlock *acb = | |
323 | (struct AdapterControlBlock *) host->hostdata; | |
1c57e86d EC |
324 | |
325 | return snprintf(buf, PAGE_SIZE, | |
d67a70ac | 326 | "%s\n", |
1c57e86d EC |
327 | acb->firm_version); |
328 | } | |
329 | ||
330 | static ssize_t | |
ee959b00 TJ |
331 | arcmsr_attr_host_fw_request_len(struct device *dev, |
332 | struct device_attribute *attr, char *buf) | |
333 | { | |
334 | struct Scsi_Host *host = class_to_shost(dev); | |
335 | struct AdapterControlBlock *acb = | |
336 | (struct AdapterControlBlock *) host->hostdata; | |
1c57e86d EC |
337 | |
338 | return snprintf(buf, PAGE_SIZE, | |
d67a70ac | 339 | "%4d\n", |
1c57e86d EC |
340 | acb->firm_request_len); |
341 | } | |
342 | ||
343 | static ssize_t | |
ee959b00 TJ |
344 | arcmsr_attr_host_fw_numbers_queue(struct device *dev, |
345 | struct device_attribute *attr, char *buf) | |
346 | { | |
347 | struct Scsi_Host *host = class_to_shost(dev); | |
348 | struct AdapterControlBlock *acb = | |
349 | (struct AdapterControlBlock *) host->hostdata; | |
1c57e86d EC |
350 | |
351 | return snprintf(buf, PAGE_SIZE, | |
d67a70ac | 352 | "%4d\n", |
1c57e86d EC |
353 | acb->firm_numbers_queue); |
354 | } | |
355 | ||
356 | static ssize_t | |
ee959b00 TJ |
357 | arcmsr_attr_host_fw_sdram_size(struct device *dev, |
358 | struct device_attribute *attr, char *buf) | |
359 | { | |
360 | struct Scsi_Host *host = class_to_shost(dev); | |
361 | struct AdapterControlBlock *acb = | |
362 | (struct AdapterControlBlock *) host->hostdata; | |
1c57e86d EC |
363 | |
364 | return snprintf(buf, PAGE_SIZE, | |
d67a70ac | 365 | "%4d\n", |
1c57e86d EC |
366 | acb->firm_sdram_size); |
367 | } | |
368 | ||
369 | static ssize_t | |
ee959b00 TJ |
370 | arcmsr_attr_host_fw_hd_channels(struct device *dev, |
371 | struct device_attribute *attr, char *buf) | |
372 | { | |
373 | struct Scsi_Host *host = class_to_shost(dev); | |
374 | struct AdapterControlBlock *acb = | |
375 | (struct AdapterControlBlock *) host->hostdata; | |
1c57e86d EC |
376 | |
377 | return snprintf(buf, PAGE_SIZE, | |
d67a70ac | 378 | "%4d\n", |
1c57e86d EC |
379 | acb->firm_hd_channels); |
380 | } | |
381 | ||
ee959b00 TJ |
382 | static DEVICE_ATTR(host_driver_version, S_IRUGO, arcmsr_attr_host_driver_version, NULL); |
383 | static DEVICE_ATTR(host_driver_posted_cmd, S_IRUGO, arcmsr_attr_host_driver_posted_cmd, NULL); | |
384 | static DEVICE_ATTR(host_driver_reset, S_IRUGO, arcmsr_attr_host_driver_reset, NULL); | |
385 | static DEVICE_ATTR(host_driver_abort, S_IRUGO, arcmsr_attr_host_driver_abort, NULL); | |
386 | static DEVICE_ATTR(host_fw_model, S_IRUGO, arcmsr_attr_host_fw_model, NULL); | |
387 | static DEVICE_ATTR(host_fw_version, S_IRUGO, arcmsr_attr_host_fw_version, NULL); | |
388 | static DEVICE_ATTR(host_fw_request_len, S_IRUGO, arcmsr_attr_host_fw_request_len, NULL); | |
389 | static DEVICE_ATTR(host_fw_numbers_queue, S_IRUGO, arcmsr_attr_host_fw_numbers_queue, NULL); | |
390 | static DEVICE_ATTR(host_fw_sdram_size, S_IRUGO, arcmsr_attr_host_fw_sdram_size, NULL); | |
391 | static DEVICE_ATTR(host_fw_hd_channels, S_IRUGO, arcmsr_attr_host_fw_hd_channels, NULL); | |
392 | ||
393 | struct device_attribute *arcmsr_host_attrs[] = { | |
394 | &dev_attr_host_driver_version, | |
395 | &dev_attr_host_driver_posted_cmd, | |
396 | &dev_attr_host_driver_reset, | |
397 | &dev_attr_host_driver_abort, | |
398 | &dev_attr_host_fw_model, | |
399 | &dev_attr_host_fw_version, | |
400 | &dev_attr_host_fw_request_len, | |
401 | &dev_attr_host_fw_numbers_queue, | |
402 | &dev_attr_host_fw_sdram_size, | |
403 | &dev_attr_host_fw_hd_channels, | |
1c57e86d EC |
404 | NULL, |
405 | }; |