2 *******************************************************************************
4 ** FILE NAME : arcmsr_attr.c
6 ** Description: attributes exported to sysfs and device host
7 *******************************************************************************
8 ** Copyright (C) 2002 - 2005, Areca Technology Corporation All rights reserved
10 ** Web site: www.areca.com.tw
11 ** E-mail: erich@areca.com.tw
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
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.
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 *******************************************************************************
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>
53 #include <scsi/scsi_cmnd.h>
54 #include <scsi/scsi_device.h>
55 #include <scsi/scsi_host.h>
56 #include <scsi/scsi_transport.h>
59 struct class_device_attribute *arcmsr_host_attrs[];
62 arcmsr_sysfs_iop_message_read(struct kobject *kobj, char *buf, loff_t off,
65 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
66 struct Scsi_Host *host = class_to_shost(cdev);
67 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
68 struct MessageUnit __iomem *reg = acb->pmu;
69 uint8_t *pQbuffer,*ptmpQbuffer;
70 int32_t allxfer_len = 0;
72 if (!capable(CAP_SYS_ADMIN))
75 /* do message unit read. */
76 ptmpQbuffer = (uint8_t *)buf;
77 while ((acb->rqbuf_firstindex != acb->rqbuf_lastindex)
78 && (allxfer_len < 1031)) {
79 pQbuffer = &acb->rqbuffer[acb->rqbuf_firstindex];
80 memcpy(ptmpQbuffer, pQbuffer, 1);
81 acb->rqbuf_firstindex++;
82 acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
86 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
87 struct QBUFFER __iomem * prbuffer = (struct QBUFFER __iomem *)
88 ®->message_rbuffer;
89 uint8_t __iomem * iop_data = (uint8_t __iomem *)prbuffer->data;
92 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
93 iop_len = readl(&prbuffer->data_len);
95 acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data);
96 acb->rqbuf_lastindex++;
97 acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
101 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK,
102 ®->inbound_doorbell);
104 return (allxfer_len);
108 arcmsr_sysfs_iop_message_write(struct kobject *kobj, char *buf, loff_t off,
111 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
112 struct Scsi_Host *host = class_to_shost(cdev);
113 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
114 int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex;
115 uint8_t *pQbuffer, *ptmpuserbuffer;
117 if (!capable(CAP_SYS_ADMIN))
121 /* do message unit write. */
122 ptmpuserbuffer = (uint8_t *)buf;
123 user_len = (int32_t)count;
124 wqbuf_lastindex = acb->wqbuf_lastindex;
125 wqbuf_firstindex = acb->wqbuf_firstindex;
126 if (wqbuf_lastindex != wqbuf_firstindex) {
127 arcmsr_post_Qbuffer(acb);
128 return 0; /*need retry*/
130 my_empty_len = (wqbuf_firstindex-wqbuf_lastindex - 1)
131 &(ARCMSR_MAX_QBUFFER - 1);
132 if (my_empty_len >= user_len) {
133 while (user_len > 0) {
135 &acb->wqbuffer[acb->wqbuf_lastindex];
136 memcpy(pQbuffer, ptmpuserbuffer, 1);
137 acb->wqbuf_lastindex++;
138 acb->wqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
142 if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) {
144 ~ACB_F_MESSAGE_WQBUFFER_CLEARED;
145 arcmsr_post_Qbuffer(acb);
149 return 0; /*need retry*/
155 arcmsr_sysfs_iop_message_clear(struct kobject *kobj, char *buf, loff_t off,
158 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
159 struct Scsi_Host *host = class_to_shost(cdev);
160 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
161 struct MessageUnit __iomem *reg = acb->pmu;
164 if (!capable(CAP_SYS_ADMIN))
167 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
168 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
169 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK
170 , ®->inbound_doorbell);
173 (ACB_F_MESSAGE_WQBUFFER_CLEARED
174 | ACB_F_MESSAGE_RQBUFFER_CLEARED
175 | ACB_F_MESSAGE_WQBUFFER_READED);
176 acb->rqbuf_firstindex = 0;
177 acb->rqbuf_lastindex = 0;
178 acb->wqbuf_firstindex = 0;
179 acb->wqbuf_lastindex = 0;
180 pQbuffer = acb->rqbuffer;
181 memset(pQbuffer, 0, sizeof (struct QBUFFER));
182 pQbuffer = acb->wqbuffer;
183 memset(pQbuffer, 0, sizeof (struct QBUFFER));
187 static struct bin_attribute arcmsr_sysfs_message_read_attr = {
193 .read = arcmsr_sysfs_iop_message_read,
196 static struct bin_attribute arcmsr_sysfs_message_write_attr = {
202 .write = arcmsr_sysfs_iop_message_write,
205 static struct bin_attribute arcmsr_sysfs_message_clear_attr = {
211 .write = arcmsr_sysfs_iop_message_clear,
214 int arcmsr_alloc_sysfs_attr(struct AdapterControlBlock *acb)
216 struct Scsi_Host *host = acb->host;
219 error = sysfs_create_bin_file(&host->shost_classdev.kobj,
220 &arcmsr_sysfs_message_read_attr);
222 printk(KERN_ERR "arcmsr: alloc sysfs mu_read failed\n");
223 goto error_bin_file_message_read;
225 error = sysfs_create_bin_file(&host->shost_classdev.kobj,
226 &arcmsr_sysfs_message_write_attr);
228 printk(KERN_ERR "arcmsr: alloc sysfs mu_write failed\n");
229 goto error_bin_file_message_write;
231 error = sysfs_create_bin_file(&host->shost_classdev.kobj,
232 &arcmsr_sysfs_message_clear_attr);
234 printk(KERN_ERR "arcmsr: alloc sysfs mu_clear failed\n");
235 goto error_bin_file_message_clear;
238 error_bin_file_message_clear:
239 sysfs_remove_bin_file(&host->shost_classdev.kobj,
240 &arcmsr_sysfs_message_write_attr);
241 error_bin_file_message_write:
242 sysfs_remove_bin_file(&host->shost_classdev.kobj,
243 &arcmsr_sysfs_message_read_attr);
244 error_bin_file_message_read:
249 arcmsr_free_sysfs_attr(struct AdapterControlBlock *acb) {
250 struct Scsi_Host *host = acb->host;
252 sysfs_remove_bin_file(&host->shost_classdev.kobj,
253 &arcmsr_sysfs_message_clear_attr);
254 sysfs_remove_bin_file(&host->shost_classdev.kobj,
255 &arcmsr_sysfs_message_write_attr);
256 sysfs_remove_bin_file(&host->shost_classdev.kobj,
257 &arcmsr_sysfs_message_read_attr);
262 arcmsr_attr_host_driver_version(struct class_device *cdev, char *buf) {
263 return snprintf(buf, PAGE_SIZE,
265 ARCMSR_DRIVER_VERSION);
269 arcmsr_attr_host_driver_posted_cmd(struct class_device *cdev, char *buf) {
270 struct Scsi_Host *host = class_to_shost(cdev);
271 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
272 return snprintf(buf, PAGE_SIZE,
274 atomic_read(&acb->ccboutstandingcount));
278 arcmsr_attr_host_driver_reset(struct class_device *cdev, char *buf) {
279 struct Scsi_Host *host = class_to_shost(cdev);
280 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
281 return snprintf(buf, PAGE_SIZE,
287 arcmsr_attr_host_driver_abort(struct class_device *cdev, char *buf) {
288 struct Scsi_Host *host = class_to_shost(cdev);
289 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
290 return snprintf(buf, PAGE_SIZE,
296 arcmsr_attr_host_fw_model(struct class_device *cdev, char *buf) {
297 struct Scsi_Host *host = class_to_shost(cdev);
298 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
299 return snprintf(buf, PAGE_SIZE,
305 arcmsr_attr_host_fw_version(struct class_device *cdev, char *buf) {
306 struct Scsi_Host *host = class_to_shost(cdev);
307 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
309 return snprintf(buf, PAGE_SIZE,
315 arcmsr_attr_host_fw_request_len(struct class_device *cdev, char *buf) {
316 struct Scsi_Host *host = class_to_shost(cdev);
317 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
319 return snprintf(buf, PAGE_SIZE,
321 acb->firm_request_len);
325 arcmsr_attr_host_fw_numbers_queue(struct class_device *cdev, char *buf) {
326 struct Scsi_Host *host = class_to_shost(cdev);
327 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
329 return snprintf(buf, PAGE_SIZE,
331 acb->firm_numbers_queue);
335 arcmsr_attr_host_fw_sdram_size(struct class_device *cdev, char *buf) {
336 struct Scsi_Host *host = class_to_shost(cdev);
337 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
339 return snprintf(buf, PAGE_SIZE,
341 acb->firm_sdram_size);
345 arcmsr_attr_host_fw_hd_channels(struct class_device *cdev, char *buf) {
346 struct Scsi_Host *host = class_to_shost(cdev);
347 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
349 return snprintf(buf, PAGE_SIZE,
351 acb->firm_hd_channels);
354 static CLASS_DEVICE_ATTR(host_driver_version, S_IRUGO, arcmsr_attr_host_driver_version, NULL);
355 static CLASS_DEVICE_ATTR(host_driver_posted_cmd, S_IRUGO, arcmsr_attr_host_driver_posted_cmd, NULL);
356 static CLASS_DEVICE_ATTR(host_driver_reset, S_IRUGO, arcmsr_attr_host_driver_reset, NULL);
357 static CLASS_DEVICE_ATTR(host_driver_abort, S_IRUGO, arcmsr_attr_host_driver_abort, NULL);
358 static CLASS_DEVICE_ATTR(host_fw_model, S_IRUGO, arcmsr_attr_host_fw_model, NULL);
359 static CLASS_DEVICE_ATTR(host_fw_version, S_IRUGO, arcmsr_attr_host_fw_version, NULL);
360 static CLASS_DEVICE_ATTR(host_fw_request_len, S_IRUGO, arcmsr_attr_host_fw_request_len, NULL);
361 static CLASS_DEVICE_ATTR(host_fw_numbers_queue, S_IRUGO, arcmsr_attr_host_fw_numbers_queue, NULL);
362 static CLASS_DEVICE_ATTR(host_fw_sdram_size, S_IRUGO, arcmsr_attr_host_fw_sdram_size, NULL);
363 static CLASS_DEVICE_ATTR(host_fw_hd_channels, S_IRUGO, arcmsr_attr_host_fw_hd_channels, NULL);
365 struct class_device_attribute *arcmsr_host_attrs[] = {
366 &class_device_attr_host_driver_version,
367 &class_device_attr_host_driver_posted_cmd,
368 &class_device_attr_host_driver_reset,
369 &class_device_attr_host_driver_abort,
370 &class_device_attr_host_fw_model,
371 &class_device_attr_host_fw_version,
372 &class_device_attr_host_fw_request_len,
373 &class_device_attr_host_fw_numbers_queue,
374 &class_device_attr_host_fw_sdram_size,
375 &class_device_attr_host_fw_hd_channels,