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>
52 #include <linux/pci.h>
54 #include <scsi/scsi_cmnd.h>
55 #include <scsi/scsi_device.h>
56 #include <scsi/scsi_host.h>
57 #include <scsi/scsi_transport.h>
60 struct class_device_attribute *arcmsr_host_attrs[];
63 arcmsr_sysfs_iop_message_read(struct kobject *kobj, char *buf, loff_t off,
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;
73 if (!capable(CAP_SYS_ADMIN))
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;
87 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
88 struct QBUFFER __iomem * prbuffer = (struct QBUFFER __iomem *)
89 ®->message_rbuffer;
90 uint8_t __iomem * iop_data = (uint8_t __iomem *)prbuffer->data;
93 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
94 iop_len = readl(&prbuffer->data_len);
96 acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data);
97 acb->rqbuf_lastindex++;
98 acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
102 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK,
103 ®->inbound_doorbell);
105 return (allxfer_len);
109 arcmsr_sysfs_iop_message_write(struct kobject *kobj, char *buf, loff_t off,
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;
118 if (!capable(CAP_SYS_ADMIN))
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*/
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) {
136 &acb->wqbuffer[acb->wqbuf_lastindex];
137 memcpy(pQbuffer, ptmpuserbuffer, 1);
138 acb->wqbuf_lastindex++;
139 acb->wqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
143 if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) {
145 ~ACB_F_MESSAGE_WQBUFFER_CLEARED;
146 arcmsr_post_Qbuffer(acb);
150 return 0; /*need retry*/
156 arcmsr_sysfs_iop_message_clear(struct kobject *kobj, char *buf, loff_t off,
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;
165 if (!capable(CAP_SYS_ADMIN))
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 , ®->inbound_doorbell);
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));
188 static struct bin_attribute arcmsr_sysfs_message_read_attr = {
192 .owner = THIS_MODULE,
195 .read = arcmsr_sysfs_iop_message_read,
198 static struct bin_attribute arcmsr_sysfs_message_write_attr = {
202 .owner = THIS_MODULE,
205 .write = arcmsr_sysfs_iop_message_write,
208 static struct bin_attribute arcmsr_sysfs_message_clear_attr = {
212 .owner = THIS_MODULE,
215 .write = arcmsr_sysfs_iop_message_clear,
218 int arcmsr_alloc_sysfs_attr(struct AdapterControlBlock *acb)
220 struct Scsi_Host *host = acb->host;
223 error = sysfs_create_bin_file(&host->shost_classdev.kobj,
224 &arcmsr_sysfs_message_read_attr);
226 printk(KERN_ERR "arcmsr: alloc sysfs mu_read failed\n");
227 goto error_bin_file_message_read;
229 error = sysfs_create_bin_file(&host->shost_classdev.kobj,
230 &arcmsr_sysfs_message_write_attr);
232 printk(KERN_ERR "arcmsr: alloc sysfs mu_write failed\n");
233 goto error_bin_file_message_write;
235 error = sysfs_create_bin_file(&host->shost_classdev.kobj,
236 &arcmsr_sysfs_message_clear_attr);
238 printk(KERN_ERR "arcmsr: alloc sysfs mu_clear failed\n");
239 goto error_bin_file_message_clear;
242 error_bin_file_message_clear:
243 sysfs_remove_bin_file(&host->shost_classdev.kobj,
244 &arcmsr_sysfs_message_write_attr);
245 error_bin_file_message_write:
246 sysfs_remove_bin_file(&host->shost_classdev.kobj,
247 &arcmsr_sysfs_message_read_attr);
248 error_bin_file_message_read:
253 arcmsr_free_sysfs_attr(struct AdapterControlBlock *acb) {
254 struct Scsi_Host *host = acb->host;
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);
266 arcmsr_attr_host_driver_version(struct class_device *cdev, char *buf) {
267 return snprintf(buf, PAGE_SIZE,
269 ARCMSR_DRIVER_VERSION);
273 arcmsr_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,
278 atomic_read(&acb->ccboutstandingcount));
282 arcmsr_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,
291 arcmsr_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,
300 arcmsr_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,
309 arcmsr_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;
313 return snprintf(buf, PAGE_SIZE,
319 arcmsr_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;
323 return snprintf(buf, PAGE_SIZE,
325 acb->firm_request_len);
329 arcmsr_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;
333 return snprintf(buf, PAGE_SIZE,
335 acb->firm_numbers_queue);
339 arcmsr_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;
343 return snprintf(buf, PAGE_SIZE,
345 acb->firm_sdram_size);
349 arcmsr_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;
353 return snprintf(buf, PAGE_SIZE,
355 acb->firm_hd_channels);
358 static CLASS_DEVICE_ATTR(host_driver_version, S_IRUGO, arcmsr_attr_host_driver_version, NULL);
359 static CLASS_DEVICE_ATTR(host_driver_posted_cmd, S_IRUGO, arcmsr_attr_host_driver_posted_cmd, NULL);
360 static CLASS_DEVICE_ATTR(host_driver_reset, S_IRUGO, arcmsr_attr_host_driver_reset, NULL);
361 static CLASS_DEVICE_ATTR(host_driver_abort, S_IRUGO, arcmsr_attr_host_driver_abort, NULL);
362 static CLASS_DEVICE_ATTR(host_fw_model, S_IRUGO, arcmsr_attr_host_fw_model, NULL);
363 static CLASS_DEVICE_ATTR(host_fw_version, S_IRUGO, arcmsr_attr_host_fw_version, NULL);
364 static CLASS_DEVICE_ATTR(host_fw_request_len, S_IRUGO, arcmsr_attr_host_fw_request_len, NULL);
365 static CLASS_DEVICE_ATTR(host_fw_numbers_queue, S_IRUGO, arcmsr_attr_host_fw_numbers_queue, NULL);
366 static CLASS_DEVICE_ATTR(host_fw_sdram_size, S_IRUGO, arcmsr_attr_host_fw_sdram_size, NULL);
367 static CLASS_DEVICE_ATTR(host_fw_hd_channels, S_IRUGO, arcmsr_attr_host_fw_hd_channels, NULL);
369 struct 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,