Commit | Line | Data |
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1c57e86d EC |
1 | /* |
2 | ******************************************************************************* | |
3 | ** O.S : Linux | |
4 | ** FILE NAME : arcmsr_attr.c | |
97b99127 | 5 | ** BY : Nick Cheng |
1c57e86d EC |
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> |
2e9feb43 | 53 | #include <linux/circ_buf.h> |
1c57e86d EC |
54 | |
55 | #include <scsi/scsi_cmnd.h> | |
56 | #include <scsi/scsi_device.h> | |
57 | #include <scsi/scsi_host.h> | |
58 | #include <scsi/scsi_transport.h> | |
59 | #include "arcmsr.h" | |
60 | ||
ee959b00 | 61 | struct device_attribute *arcmsr_host_attrs[]; |
1c57e86d | 62 | |
2c3c8bea CW |
63 | static ssize_t arcmsr_sysfs_iop_message_read(struct file *filp, |
64 | struct kobject *kobj, | |
685b9e02 JB |
65 | struct bin_attribute *bin, |
66 | char *buf, loff_t off, | |
67 | size_t count) | |
1c57e86d | 68 | { |
ee959b00 TJ |
69 | struct device *dev = container_of(kobj,struct device,kobj); |
70 | struct Scsi_Host *host = class_to_shost(dev); | |
1c57e86d | 71 | struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata; |
2e9feb43 | 72 | uint8_t *ptmpQbuffer; |
1c57e86d | 73 | int32_t allxfer_len = 0; |
bb263c4e | 74 | unsigned long flags; |
1c57e86d EC |
75 | |
76 | if (!capable(CAP_SYS_ADMIN)) | |
77 | return -EACCES; | |
78 | ||
79 | /* do message unit read. */ | |
80 | ptmpQbuffer = (uint8_t *)buf; | |
bb263c4e | 81 | spin_lock_irqsave(&acb->rqbuffer_lock, flags); |
2e9feb43 CH |
82 | if (acb->rqbuf_getIndex != acb->rqbuf_putIndex) { |
83 | unsigned int tail = acb->rqbuf_getIndex; | |
84 | unsigned int head = acb->rqbuf_putIndex; | |
85 | unsigned int cnt_to_end = CIRC_CNT_TO_END(head, tail, ARCMSR_MAX_QBUFFER); | |
86 | ||
87 | allxfer_len = CIRC_CNT(head, tail, ARCMSR_MAX_QBUFFER); | |
88 | if (allxfer_len > ARCMSR_API_DATA_BUFLEN) | |
89 | allxfer_len = ARCMSR_API_DATA_BUFLEN; | |
90 | ||
91 | if (allxfer_len <= cnt_to_end) | |
92 | memcpy(ptmpQbuffer, acb->rqbuffer + tail, allxfer_len); | |
93 | else { | |
94 | memcpy(ptmpQbuffer, acb->rqbuffer + tail, cnt_to_end); | |
95 | memcpy(ptmpQbuffer + cnt_to_end, acb->rqbuffer, allxfer_len - cnt_to_end); | |
bb263c4e | 96 | } |
2e9feb43 | 97 | acb->rqbuf_getIndex = (acb->rqbuf_getIndex + allxfer_len) % ARCMSR_MAX_QBUFFER; |
1c57e86d EC |
98 | } |
99 | if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) { | |
80da1adb | 100 | struct QBUFFER __iomem *prbuffer; |
1c57e86d | 101 | acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW; |
1a4f550a | 102 | prbuffer = arcmsr_get_iop_rqbuffer(acb); |
bb263c4e CH |
103 | if (arcmsr_Read_iop_rqbuffer_data(acb, prbuffer) == 0) |
104 | acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW; | |
1c57e86d | 105 | } |
bb263c4e CH |
106 | spin_unlock_irqrestore(&acb->rqbuffer_lock, flags); |
107 | return allxfer_len; | |
1c57e86d EC |
108 | } |
109 | ||
2c3c8bea CW |
110 | static ssize_t arcmsr_sysfs_iop_message_write(struct file *filp, |
111 | struct kobject *kobj, | |
685b9e02 JB |
112 | struct bin_attribute *bin, |
113 | char *buf, loff_t off, | |
114 | size_t count) | |
1c57e86d | 115 | { |
ee959b00 TJ |
116 | struct device *dev = container_of(kobj,struct device,kobj); |
117 | struct Scsi_Host *host = class_to_shost(dev); | |
1c57e86d | 118 | struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata; |
2e9feb43 | 119 | int32_t user_len, cnt2end; |
1c57e86d | 120 | uint8_t *pQbuffer, *ptmpuserbuffer; |
bb263c4e | 121 | unsigned long flags; |
1c57e86d EC |
122 | |
123 | if (!capable(CAP_SYS_ADMIN)) | |
124 | return -EACCES; | |
2e9feb43 | 125 | if (count > ARCMSR_API_DATA_BUFLEN) |
1c57e86d EC |
126 | return -EINVAL; |
127 | /* do message unit write. */ | |
128 | ptmpuserbuffer = (uint8_t *)buf; | |
129 | user_len = (int32_t)count; | |
bb263c4e | 130 | spin_lock_irqsave(&acb->wqbuffer_lock, flags); |
2e9feb43 | 131 | if (acb->wqbuf_putIndex != acb->wqbuf_getIndex) { |
bb263c4e CH |
132 | arcmsr_write_ioctldata2iop(acb); |
133 | spin_unlock_irqrestore(&acb->wqbuffer_lock, flags); | |
1c57e86d EC |
134 | return 0; /*need retry*/ |
135 | } else { | |
2e9feb43 CH |
136 | pQbuffer = &acb->wqbuffer[acb->wqbuf_putIndex]; |
137 | cnt2end = ARCMSR_MAX_QBUFFER - acb->wqbuf_putIndex; | |
138 | if (user_len > cnt2end) { | |
139 | memcpy(pQbuffer, ptmpuserbuffer, cnt2end); | |
140 | ptmpuserbuffer += cnt2end; | |
141 | user_len -= cnt2end; | |
142 | acb->wqbuf_putIndex = 0; | |
143 | pQbuffer = acb->wqbuffer; | |
1c57e86d | 144 | } |
2e9feb43 CH |
145 | memcpy(pQbuffer, ptmpuserbuffer, user_len); |
146 | acb->wqbuf_putIndex += user_len; | |
147 | acb->wqbuf_putIndex %= ARCMSR_MAX_QBUFFER; | |
148 | if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) { | |
149 | acb->acb_flags &= | |
150 | ~ACB_F_MESSAGE_WQBUFFER_CLEARED; | |
151 | arcmsr_write_ioctldata2iop(acb); | |
152 | } | |
153 | spin_unlock_irqrestore(&acb->wqbuffer_lock, flags); | |
154 | return count; | |
1c57e86d EC |
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 | 167 | uint8_t *pQbuffer; |
bb263c4e | 168 | unsigned long flags; |
1c57e86d EC |
169 | |
170 | if (!capable(CAP_SYS_ADMIN)) | |
171 | return -EACCES; | |
172 | ||
bb263c4e | 173 | arcmsr_clear_iop2drv_rqueue_buffer(acb); |
1c57e86d EC |
174 | acb->acb_flags |= |
175 | (ACB_F_MESSAGE_WQBUFFER_CLEARED | |
176 | | ACB_F_MESSAGE_RQBUFFER_CLEARED | |
177 | | ACB_F_MESSAGE_WQBUFFER_READED); | |
bb263c4e | 178 | spin_lock_irqsave(&acb->rqbuffer_lock, flags); |
2e9feb43 CH |
179 | acb->rqbuf_getIndex = 0; |
180 | acb->rqbuf_putIndex = 0; | |
bb263c4e CH |
181 | spin_unlock_irqrestore(&acb->rqbuffer_lock, flags); |
182 | spin_lock_irqsave(&acb->wqbuffer_lock, flags); | |
2e9feb43 CH |
183 | acb->wqbuf_getIndex = 0; |
184 | acb->wqbuf_putIndex = 0; | |
bb263c4e | 185 | spin_unlock_irqrestore(&acb->wqbuffer_lock, flags); |
1c57e86d EC |
186 | pQbuffer = acb->rqbuffer; |
187 | memset(pQbuffer, 0, sizeof (struct QBUFFER)); | |
188 | pQbuffer = acb->wqbuffer; | |
189 | memset(pQbuffer, 0, sizeof (struct QBUFFER)); | |
190 | return 1; | |
191 | } | |
192 | ||
193 | static struct bin_attribute arcmsr_sysfs_message_read_attr = { | |
194 | .attr = { | |
195 | .name = "mu_read", | |
196 | .mode = S_IRUSR , | |
1c57e86d | 197 | }, |
2e9feb43 | 198 | .size = ARCMSR_API_DATA_BUFLEN, |
1c57e86d EC |
199 | .read = arcmsr_sysfs_iop_message_read, |
200 | }; | |
201 | ||
202 | static struct bin_attribute arcmsr_sysfs_message_write_attr = { | |
203 | .attr = { | |
204 | .name = "mu_write", | |
205 | .mode = S_IWUSR, | |
1c57e86d | 206 | }, |
2e9feb43 | 207 | .size = ARCMSR_API_DATA_BUFLEN, |
1c57e86d EC |
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, | |
1c57e86d EC |
215 | }, |
216 | .size = 1, | |
217 | .write = arcmsr_sysfs_iop_message_clear, | |
218 | }; | |
219 | ||
220 | int arcmsr_alloc_sysfs_attr(struct AdapterControlBlock *acb) | |
221 | { | |
222 | struct Scsi_Host *host = acb->host; | |
223 | int error; | |
224 | ||
ee959b00 | 225 | error = sysfs_create_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_read_attr); |
1c57e86d EC |
226 | if (error) { |
227 | printk(KERN_ERR "arcmsr: alloc sysfs mu_read failed\n"); | |
228 | goto error_bin_file_message_read; | |
229 | } | |
ee959b00 | 230 | error = sysfs_create_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_write_attr); |
1c57e86d EC |
231 | if (error) { |
232 | printk(KERN_ERR "arcmsr: alloc sysfs mu_write failed\n"); | |
233 | goto error_bin_file_message_write; | |
234 | } | |
ee959b00 | 235 | error = sysfs_create_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_clear_attr); |
1c57e86d EC |
236 | if (error) { |
237 | printk(KERN_ERR "arcmsr: alloc sysfs mu_clear failed\n"); | |
238 | goto error_bin_file_message_clear; | |
239 | } | |
240 | return 0; | |
241 | error_bin_file_message_clear: | |
ee959b00 | 242 | sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_write_attr); |
1c57e86d | 243 | error_bin_file_message_write: |
ee959b00 | 244 | sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_read_attr); |
1c57e86d EC |
245 | error_bin_file_message_read: |
246 | return error; | |
247 | } | |
248 | ||
ee959b00 TJ |
249 | void arcmsr_free_sysfs_attr(struct AdapterControlBlock *acb) |
250 | { | |
1c57e86d | 251 | struct Scsi_Host *host = acb->host; |
1c57e86d | 252 | |
ee959b00 TJ |
253 | sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_clear_attr); |
254 | sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_write_attr); | |
255 | sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_read_attr); | |
1c57e86d EC |
256 | } |
257 | ||
258 | ||
259 | static ssize_t | |
ee959b00 TJ |
260 | arcmsr_attr_host_driver_version(struct device *dev, |
261 | struct device_attribute *attr, char *buf) | |
262 | { | |
1c57e86d | 263 | return snprintf(buf, PAGE_SIZE, |
d67a70ac | 264 | "%s\n", |
1c57e86d EC |
265 | ARCMSR_DRIVER_VERSION); |
266 | } | |
267 | ||
268 | static ssize_t | |
ee959b00 TJ |
269 | arcmsr_attr_host_driver_posted_cmd(struct device *dev, |
270 | struct device_attribute *attr, char *buf) | |
271 | { | |
272 | struct Scsi_Host *host = class_to_shost(dev); | |
273 | struct AdapterControlBlock *acb = | |
274 | (struct AdapterControlBlock *) host->hostdata; | |
1c57e86d | 275 | return snprintf(buf, PAGE_SIZE, |
d67a70ac | 276 | "%4d\n", |
1c57e86d EC |
277 | atomic_read(&acb->ccboutstandingcount)); |
278 | } | |
279 | ||
280 | static ssize_t | |
ee959b00 TJ |
281 | arcmsr_attr_host_driver_reset(struct device *dev, |
282 | struct device_attribute *attr, char *buf) | |
283 | { | |
284 | struct Scsi_Host *host = class_to_shost(dev); | |
285 | struct AdapterControlBlock *acb = | |
286 | (struct AdapterControlBlock *) host->hostdata; | |
1c57e86d | 287 | return snprintf(buf, PAGE_SIZE, |
d67a70ac | 288 | "%4d\n", |
1c57e86d EC |
289 | acb->num_resets); |
290 | } | |
291 | ||
292 | static ssize_t | |
ee959b00 TJ |
293 | arcmsr_attr_host_driver_abort(struct device *dev, |
294 | struct device_attribute *attr, char *buf) | |
295 | { | |
296 | struct Scsi_Host *host = class_to_shost(dev); | |
297 | struct AdapterControlBlock *acb = | |
298 | (struct AdapterControlBlock *) host->hostdata; | |
1c57e86d | 299 | return snprintf(buf, PAGE_SIZE, |
d67a70ac | 300 | "%4d\n", |
1c57e86d EC |
301 | acb->num_aborts); |
302 | } | |
303 | ||
304 | static ssize_t | |
ee959b00 TJ |
305 | arcmsr_attr_host_fw_model(struct device *dev, struct device_attribute *attr, |
306 | char *buf) | |
307 | { | |
308 | struct Scsi_Host *host = class_to_shost(dev); | |
309 | struct AdapterControlBlock *acb = | |
310 | (struct AdapterControlBlock *) host->hostdata; | |
1c57e86d | 311 | return snprintf(buf, PAGE_SIZE, |
d67a70ac | 312 | "%s\n", |
1c57e86d EC |
313 | acb->firm_model); |
314 | } | |
315 | ||
316 | static ssize_t | |
ee959b00 TJ |
317 | arcmsr_attr_host_fw_version(struct device *dev, |
318 | struct device_attribute *attr, char *buf) | |
319 | { | |
320 | struct Scsi_Host *host = class_to_shost(dev); | |
321 | struct AdapterControlBlock *acb = | |
322 | (struct AdapterControlBlock *) host->hostdata; | |
1c57e86d EC |
323 | |
324 | return snprintf(buf, PAGE_SIZE, | |
d67a70ac | 325 | "%s\n", |
1c57e86d EC |
326 | acb->firm_version); |
327 | } | |
328 | ||
329 | static ssize_t | |
ee959b00 TJ |
330 | arcmsr_attr_host_fw_request_len(struct device *dev, |
331 | struct device_attribute *attr, char *buf) | |
332 | { | |
333 | struct Scsi_Host *host = class_to_shost(dev); | |
334 | struct AdapterControlBlock *acb = | |
335 | (struct AdapterControlBlock *) host->hostdata; | |
1c57e86d EC |
336 | |
337 | return snprintf(buf, PAGE_SIZE, | |
d67a70ac | 338 | "%4d\n", |
1c57e86d EC |
339 | acb->firm_request_len); |
340 | } | |
341 | ||
342 | static ssize_t | |
ee959b00 TJ |
343 | arcmsr_attr_host_fw_numbers_queue(struct device *dev, |
344 | struct device_attribute *attr, char *buf) | |
345 | { | |
346 | struct Scsi_Host *host = class_to_shost(dev); | |
347 | struct AdapterControlBlock *acb = | |
348 | (struct AdapterControlBlock *) host->hostdata; | |
1c57e86d EC |
349 | |
350 | return snprintf(buf, PAGE_SIZE, | |
d67a70ac | 351 | "%4d\n", |
1c57e86d EC |
352 | acb->firm_numbers_queue); |
353 | } | |
354 | ||
355 | static ssize_t | |
ee959b00 TJ |
356 | arcmsr_attr_host_fw_sdram_size(struct device *dev, |
357 | struct device_attribute *attr, char *buf) | |
358 | { | |
359 | struct Scsi_Host *host = class_to_shost(dev); | |
360 | struct AdapterControlBlock *acb = | |
361 | (struct AdapterControlBlock *) host->hostdata; | |
1c57e86d EC |
362 | |
363 | return snprintf(buf, PAGE_SIZE, | |
d67a70ac | 364 | "%4d\n", |
1c57e86d EC |
365 | acb->firm_sdram_size); |
366 | } | |
367 | ||
368 | static ssize_t | |
ee959b00 TJ |
369 | arcmsr_attr_host_fw_hd_channels(struct device *dev, |
370 | struct device_attribute *attr, char *buf) | |
371 | { | |
372 | struct Scsi_Host *host = class_to_shost(dev); | |
373 | struct AdapterControlBlock *acb = | |
374 | (struct AdapterControlBlock *) host->hostdata; | |
1c57e86d EC |
375 | |
376 | return snprintf(buf, PAGE_SIZE, | |
d67a70ac | 377 | "%4d\n", |
1c57e86d EC |
378 | acb->firm_hd_channels); |
379 | } | |
380 | ||
ee959b00 TJ |
381 | static DEVICE_ATTR(host_driver_version, S_IRUGO, arcmsr_attr_host_driver_version, NULL); |
382 | static DEVICE_ATTR(host_driver_posted_cmd, S_IRUGO, arcmsr_attr_host_driver_posted_cmd, NULL); | |
383 | static DEVICE_ATTR(host_driver_reset, S_IRUGO, arcmsr_attr_host_driver_reset, NULL); | |
384 | static DEVICE_ATTR(host_driver_abort, S_IRUGO, arcmsr_attr_host_driver_abort, NULL); | |
385 | static DEVICE_ATTR(host_fw_model, S_IRUGO, arcmsr_attr_host_fw_model, NULL); | |
386 | static DEVICE_ATTR(host_fw_version, S_IRUGO, arcmsr_attr_host_fw_version, NULL); | |
387 | static DEVICE_ATTR(host_fw_request_len, S_IRUGO, arcmsr_attr_host_fw_request_len, NULL); | |
388 | static DEVICE_ATTR(host_fw_numbers_queue, S_IRUGO, arcmsr_attr_host_fw_numbers_queue, NULL); | |
389 | static DEVICE_ATTR(host_fw_sdram_size, S_IRUGO, arcmsr_attr_host_fw_sdram_size, NULL); | |
390 | static DEVICE_ATTR(host_fw_hd_channels, S_IRUGO, arcmsr_attr_host_fw_hd_channels, NULL); | |
391 | ||
392 | struct device_attribute *arcmsr_host_attrs[] = { | |
393 | &dev_attr_host_driver_version, | |
394 | &dev_attr_host_driver_posted_cmd, | |
395 | &dev_attr_host_driver_reset, | |
396 | &dev_attr_host_driver_abort, | |
397 | &dev_attr_host_fw_model, | |
398 | &dev_attr_host_fw_version, | |
399 | &dev_attr_host_fw_request_len, | |
400 | &dev_attr_host_fw_numbers_queue, | |
401 | &dev_attr_host_fw_sdram_size, | |
402 | &dev_attr_host_fw_hd_channels, | |
1c57e86d EC |
403 | NULL, |
404 | }; |