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Diffstat (limited to 'drivers/scsi/arcmsr/arcmsr_attr.c')
-rw-r--r--drivers/scsi/arcmsr/arcmsr_attr.c381
1 files changed, 381 insertions, 0 deletions
diff --git a/drivers/scsi/arcmsr/arcmsr_attr.c b/drivers/scsi/arcmsr/arcmsr_attr.c
new file mode 100644
index 000000000000..12497da5529d
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+++ b/drivers/scsi/arcmsr/arcmsr_attr.c
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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: erich@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
60struct class_device_attribute *arcmsr_host_attrs[];
61
62static ssize_t
63arcmsr_sysfs_iop_message_read(struct kobject *kobj, char *buf, loff_t off,
64 size_t count)
65{
66 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
67 struct Scsi_Host *host = class_to_shost(cdev);
68 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
69 struct MessageUnit __iomem *reg = acb->pmu;
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 = (struct QBUFFER __iomem *)
89 &reg->message_rbuffer;
90 uint8_t __iomem * iop_data = (uint8_t __iomem *)prbuffer->data;
91 int32_t iop_len;
92
93 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
94 iop_len = readl(&prbuffer->data_len);
95 while (iop_len > 0) {
96 acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data);
97 acb->rqbuf_lastindex++;
98 acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
99 iop_data++;
100 iop_len--;
101 }
102 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK,
103 &reg->inbound_doorbell);
104 }
105 return (allxfer_len);
106}
107
108static ssize_t
109arcmsr_sysfs_iop_message_write(struct kobject *kobj, char *buf, loff_t off,
110 size_t count)
111{
112 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
113 struct Scsi_Host *host = class_to_shost(cdev);
114 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
115 int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex;
116 uint8_t *pQbuffer, *ptmpuserbuffer;
117
118 if (!capable(CAP_SYS_ADMIN))
119 return -EACCES;
120 if (count > 1032)
121 return -EINVAL;
122 /* do message unit write. */
123 ptmpuserbuffer = (uint8_t *)buf;
124 user_len = (int32_t)count;
125 wqbuf_lastindex = acb->wqbuf_lastindex;
126 wqbuf_firstindex = acb->wqbuf_firstindex;
127 if (wqbuf_lastindex != wqbuf_firstindex) {
128 arcmsr_post_Qbuffer(acb);
129 return 0; /*need retry*/
130 } else {
131 my_empty_len = (wqbuf_firstindex-wqbuf_lastindex - 1)
132 &(ARCMSR_MAX_QBUFFER - 1);
133 if (my_empty_len >= user_len) {
134 while (user_len > 0) {
135 pQbuffer =
136 &acb->wqbuffer[acb->wqbuf_lastindex];
137 memcpy(pQbuffer, ptmpuserbuffer, 1);
138 acb->wqbuf_lastindex++;
139 acb->wqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
140 ptmpuserbuffer++;
141 user_len--;
142 }
143 if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) {
144 acb->acb_flags &=
145 ~ACB_F_MESSAGE_WQBUFFER_CLEARED;
146 arcmsr_post_Qbuffer(acb);
147 }
148 return count;
149 } else {
150 return 0; /*need retry*/
151 }
152 }
153}
154
155static ssize_t
156arcmsr_sysfs_iop_message_clear(struct kobject *kobj, char *buf, loff_t off,
157 size_t count)
158{
159 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
160 struct Scsi_Host *host = class_to_shost(cdev);
161 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
162 struct MessageUnit __iomem *reg = acb->pmu;
163 uint8_t *pQbuffer;
164
165 if (!capable(CAP_SYS_ADMIN))
166 return -EACCES;
167
168 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
169 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
170 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK
171 , &reg->inbound_doorbell);
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
188static 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
198static 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
208static 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
218int 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,
224 &arcmsr_sysfs_message_read_attr);
225 if (error) {
226 printk(KERN_ERR "arcmsr: alloc sysfs mu_read failed\n");
227 goto error_bin_file_message_read;
228 }
229 error = sysfs_create_bin_file(&host->shost_classdev.kobj,
230 &arcmsr_sysfs_message_write_attr);
231 if (error) {
232 printk(KERN_ERR "arcmsr: alloc sysfs mu_write failed\n");
233 goto error_bin_file_message_write;
234 }
235 error = sysfs_create_bin_file(&host->shost_classdev.kobj,
236 &arcmsr_sysfs_message_clear_attr);
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;
242error_bin_file_message_clear:
243 sysfs_remove_bin_file(&host->shost_classdev.kobj,
244 &arcmsr_sysfs_message_write_attr);
245error_bin_file_message_write:
246 sysfs_remove_bin_file(&host->shost_classdev.kobj,
247 &arcmsr_sysfs_message_read_attr);
248error_bin_file_message_read:
249 return error;
250}
251
252void
253arcmsr_free_sysfs_attr(struct AdapterControlBlock *acb) {
254 struct Scsi_Host *host = acb->host;
255
256 sysfs_remove_bin_file(&host->shost_classdev.kobj,
257 &arcmsr_sysfs_message_clear_attr);
258 sysfs_remove_bin_file(&host->shost_classdev.kobj,
259 &arcmsr_sysfs_message_write_attr);
260 sysfs_remove_bin_file(&host->shost_classdev.kobj,
261 &arcmsr_sysfs_message_read_attr);
262}
263
264
265static ssize_t
266arcmsr_attr_host_driver_version(struct class_device *cdev, char *buf) {
267 return snprintf(buf, PAGE_SIZE,
268 "%s\n",
269 ARCMSR_DRIVER_VERSION);
270}
271
272static ssize_t
273arcmsr_attr_host_driver_posted_cmd(struct class_device *cdev, char *buf) {
274 struct Scsi_Host *host = class_to_shost(cdev);
275 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
276 return snprintf(buf, PAGE_SIZE,
277 "%4d\n",
278 atomic_read(&acb->ccboutstandingcount));
279}
280
281static ssize_t
282arcmsr_attr_host_driver_reset(struct class_device *cdev, char *buf) {
283 struct Scsi_Host *host = class_to_shost(cdev);
284 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
285 return snprintf(buf, PAGE_SIZE,
286 "%4d\n",
287 acb->num_resets);
288}
289
290static ssize_t
291arcmsr_attr_host_driver_abort(struct class_device *cdev, char *buf) {
292 struct Scsi_Host *host = class_to_shost(cdev);
293 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
294 return snprintf(buf, PAGE_SIZE,
295 "%4d\n",
296 acb->num_aborts);
297}
298
299static ssize_t
300arcmsr_attr_host_fw_model(struct class_device *cdev, char *buf) {
301 struct Scsi_Host *host = class_to_shost(cdev);
302 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
303 return snprintf(buf, PAGE_SIZE,
304 "%s\n",
305 acb->firm_model);
306}
307
308static ssize_t
309arcmsr_attr_host_fw_version(struct class_device *cdev, char *buf) {
310 struct Scsi_Host *host = class_to_shost(cdev);
311 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
312
313 return snprintf(buf, PAGE_SIZE,
314 "%s\n",
315 acb->firm_version);
316}
317
318static ssize_t
319arcmsr_attr_host_fw_request_len(struct class_device *cdev, char *buf) {
320 struct Scsi_Host *host = class_to_shost(cdev);
321 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
322
323 return snprintf(buf, PAGE_SIZE,
324 "%4d\n",
325 acb->firm_request_len);
326}
327
328static ssize_t
329arcmsr_attr_host_fw_numbers_queue(struct class_device *cdev, char *buf) {
330 struct Scsi_Host *host = class_to_shost(cdev);
331 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
332
333 return snprintf(buf, PAGE_SIZE,
334 "%4d\n",
335 acb->firm_numbers_queue);
336}
337
338static ssize_t
339arcmsr_attr_host_fw_sdram_size(struct class_device *cdev, char *buf) {
340 struct Scsi_Host *host = class_to_shost(cdev);
341 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
342
343 return snprintf(buf, PAGE_SIZE,
344 "%4d\n",
345 acb->firm_sdram_size);
346}
347
348static ssize_t
349arcmsr_attr_host_fw_hd_channels(struct class_device *cdev, char *buf) {
350 struct Scsi_Host *host = class_to_shost(cdev);
351 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
352
353 return snprintf(buf, PAGE_SIZE,
354 "%4d\n",
355 acb->firm_hd_channels);
356}
357
358static CLASS_DEVICE_ATTR(host_driver_version, S_IRUGO, arcmsr_attr_host_driver_version, NULL);
359static CLASS_DEVICE_ATTR(host_driver_posted_cmd, S_IRUGO, arcmsr_attr_host_driver_posted_cmd, NULL);
360static CLASS_DEVICE_ATTR(host_driver_reset, S_IRUGO, arcmsr_attr_host_driver_reset, NULL);
361static CLASS_DEVICE_ATTR(host_driver_abort, S_IRUGO, arcmsr_attr_host_driver_abort, NULL);
362static CLASS_DEVICE_ATTR(host_fw_model, S_IRUGO, arcmsr_attr_host_fw_model, NULL);
363static CLASS_DEVICE_ATTR(host_fw_version, S_IRUGO, arcmsr_attr_host_fw_version, NULL);
364static CLASS_DEVICE_ATTR(host_fw_request_len, S_IRUGO, arcmsr_attr_host_fw_request_len, NULL);
365static CLASS_DEVICE_ATTR(host_fw_numbers_queue, S_IRUGO, arcmsr_attr_host_fw_numbers_queue, NULL);
366static CLASS_DEVICE_ATTR(host_fw_sdram_size, S_IRUGO, arcmsr_attr_host_fw_sdram_size, NULL);
367static CLASS_DEVICE_ATTR(host_fw_hd_channels, S_IRUGO, arcmsr_attr_host_fw_hd_channels, NULL);
368
369struct class_device_attribute *arcmsr_host_attrs[] = {
370 &class_device_attr_host_driver_version,
371 &class_device_attr_host_driver_posted_cmd,
372 &class_device_attr_host_driver_reset,
373 &class_device_attr_host_driver_abort,
374 &class_device_attr_host_fw_model,
375 &class_device_attr_host_fw_version,
376 &class_device_attr_host_fw_request_len,
377 &class_device_attr_host_fw_numbers_queue,
378 &class_device_attr_host_fw_sdram_size,
379 &class_device_attr_host_fw_hd_channels,
380 NULL,
381};
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-19 20:39:54 -0500