1 /* 2 ******************************************************************************* 3 ** O.S : Linux 4 ** FILE NAME : arcmsr_attr.c 5 ** BY : Nick Cheng 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: support@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 60 struct device_attribute *arcmsr_host_attrs[]; 61 62 static ssize_t arcmsr_sysfs_iop_message_read(struct file *filp, 63 struct kobject *kobj, 64 struct bin_attribute *bin, 65 char *buf, loff_t off, 66 size_t count) 67 { 68 struct device *dev = container_of(kobj,struct device,kobj); 69 struct Scsi_Host *host = class_to_shost(dev); 70 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata; 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) { 89 struct QBUFFER __iomem *prbuffer; 90 uint8_t __iomem *iop_data; 91 int32_t iop_len; 92 93 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW; 94 prbuffer = arcmsr_get_iop_rqbuffer(acb); 95 iop_data = prbuffer->data; 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 } 104 arcmsr_iop_message_read(acb); 105 } 106 return (allxfer_len); 107 } 108 109 static ssize_t arcmsr_sysfs_iop_message_write(struct file *filp, 110 struct kobject *kobj, 111 struct bin_attribute *bin, 112 char *buf, loff_t off, 113 size_t count) 114 { 115 struct device *dev = container_of(kobj,struct device,kobj); 116 struct Scsi_Host *host = class_to_shost(dev); 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) { 131 arcmsr_post_ioctldata2iop(acb); 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; 149 arcmsr_post_ioctldata2iop(acb); 150 } 151 return count; 152 } else { 153 return 0; /*need retry*/ 154 } 155 } 156 } 157 158 static ssize_t arcmsr_sysfs_iop_message_clear(struct file *filp, 159 struct kobject *kobj, 160 struct bin_attribute *bin, 161 char *buf, loff_t off, 162 size_t count) 163 { 164 struct device *dev = container_of(kobj,struct device,kobj); 165 struct Scsi_Host *host = class_to_shost(dev); 166 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata; 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; 174 arcmsr_iop_message_read(acb); 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 , 195 }, 196 .size = 1032, 197 .read = arcmsr_sysfs_iop_message_read, 198 }; 199 200 static struct bin_attribute arcmsr_sysfs_message_write_attr = { 201 .attr = { 202 .name = "mu_write", 203 .mode = S_IWUSR, 204 }, 205 .size = 1032, 206 .write = arcmsr_sysfs_iop_message_write, 207 }; 208 209 static struct bin_attribute arcmsr_sysfs_message_clear_attr = { 210 .attr = { 211 .name = "mu_clear", 212 .mode = S_IWUSR, 213 }, 214 .size = 1, 215 .write = arcmsr_sysfs_iop_message_clear, 216 }; 217 218 int 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_dev.kobj, &arcmsr_sysfs_message_read_attr); 224 if (error) { 225 printk(KERN_ERR "arcmsr: alloc sysfs mu_read failed\n"); 226 goto error_bin_file_message_read; 227 } 228 error = sysfs_create_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_write_attr); 229 if (error) { 230 printk(KERN_ERR "arcmsr: alloc sysfs mu_write failed\n"); 231 goto error_bin_file_message_write; 232 } 233 error = sysfs_create_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_clear_attr); 234 if (error) { 235 printk(KERN_ERR "arcmsr: alloc sysfs mu_clear failed\n"); 236 goto error_bin_file_message_clear; 237 } 238 return 0; 239 error_bin_file_message_clear: 240 sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_write_attr); 241 error_bin_file_message_write: 242 sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_read_attr); 243 error_bin_file_message_read: 244 return error; 245 } 246 247 void arcmsr_free_sysfs_attr(struct AdapterControlBlock *acb) 248 { 249 struct Scsi_Host *host = acb->host; 250 251 sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_clear_attr); 252 sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_write_attr); 253 sysfs_remove_bin_file(&host->shost_dev.kobj, &arcmsr_sysfs_message_read_attr); 254 } 255 256 257 static ssize_t 258 arcmsr_attr_host_driver_version(struct device *dev, 259 struct device_attribute *attr, char *buf) 260 { 261 return snprintf(buf, PAGE_SIZE, 262 "%s\n", 263 ARCMSR_DRIVER_VERSION); 264 } 265 266 static ssize_t 267 arcmsr_attr_host_driver_posted_cmd(struct device *dev, 268 struct device_attribute *attr, char *buf) 269 { 270 struct Scsi_Host *host = class_to_shost(dev); 271 struct AdapterControlBlock *acb = 272 (struct AdapterControlBlock *) host->hostdata; 273 return snprintf(buf, PAGE_SIZE, 274 "%4d\n", 275 atomic_read(&acb->ccboutstandingcount)); 276 } 277 278 static ssize_t 279 arcmsr_attr_host_driver_reset(struct device *dev, 280 struct device_attribute *attr, char *buf) 281 { 282 struct Scsi_Host *host = class_to_shost(dev); 283 struct AdapterControlBlock *acb = 284 (struct AdapterControlBlock *) host->hostdata; 285 return snprintf(buf, PAGE_SIZE, 286 "%4d\n", 287 acb->num_resets); 288 } 289 290 static ssize_t 291 arcmsr_attr_host_driver_abort(struct device *dev, 292 struct device_attribute *attr, char *buf) 293 { 294 struct Scsi_Host *host = class_to_shost(dev); 295 struct AdapterControlBlock *acb = 296 (struct AdapterControlBlock *) host->hostdata; 297 return snprintf(buf, PAGE_SIZE, 298 "%4d\n", 299 acb->num_aborts); 300 } 301 302 static ssize_t 303 arcmsr_attr_host_fw_model(struct device *dev, struct device_attribute *attr, 304 char *buf) 305 { 306 struct Scsi_Host *host = class_to_shost(dev); 307 struct AdapterControlBlock *acb = 308 (struct AdapterControlBlock *) host->hostdata; 309 return snprintf(buf, PAGE_SIZE, 310 "%s\n", 311 acb->firm_model); 312 } 313 314 static ssize_t 315 arcmsr_attr_host_fw_version(struct device *dev, 316 struct device_attribute *attr, char *buf) 317 { 318 struct Scsi_Host *host = class_to_shost(dev); 319 struct AdapterControlBlock *acb = 320 (struct AdapterControlBlock *) host->hostdata; 321 322 return snprintf(buf, PAGE_SIZE, 323 "%s\n", 324 acb->firm_version); 325 } 326 327 static ssize_t 328 arcmsr_attr_host_fw_request_len(struct device *dev, 329 struct device_attribute *attr, char *buf) 330 { 331 struct Scsi_Host *host = class_to_shost(dev); 332 struct AdapterControlBlock *acb = 333 (struct AdapterControlBlock *) host->hostdata; 334 335 return snprintf(buf, PAGE_SIZE, 336 "%4d\n", 337 acb->firm_request_len); 338 } 339 340 static ssize_t 341 arcmsr_attr_host_fw_numbers_queue(struct device *dev, 342 struct device_attribute *attr, char *buf) 343 { 344 struct Scsi_Host *host = class_to_shost(dev); 345 struct AdapterControlBlock *acb = 346 (struct AdapterControlBlock *) host->hostdata; 347 348 return snprintf(buf, PAGE_SIZE, 349 "%4d\n", 350 acb->firm_numbers_queue); 351 } 352 353 static ssize_t 354 arcmsr_attr_host_fw_sdram_size(struct device *dev, 355 struct device_attribute *attr, char *buf) 356 { 357 struct Scsi_Host *host = class_to_shost(dev); 358 struct AdapterControlBlock *acb = 359 (struct AdapterControlBlock *) host->hostdata; 360 361 return snprintf(buf, PAGE_SIZE, 362 "%4d\n", 363 acb->firm_sdram_size); 364 } 365 366 static ssize_t 367 arcmsr_attr_host_fw_hd_channels(struct device *dev, 368 struct device_attribute *attr, char *buf) 369 { 370 struct Scsi_Host *host = class_to_shost(dev); 371 struct AdapterControlBlock *acb = 372 (struct AdapterControlBlock *) host->hostdata; 373 374 return snprintf(buf, PAGE_SIZE, 375 "%4d\n", 376 acb->firm_hd_channels); 377 } 378 379 static DEVICE_ATTR(host_driver_version, S_IRUGO, arcmsr_attr_host_driver_version, NULL); 380 static DEVICE_ATTR(host_driver_posted_cmd, S_IRUGO, arcmsr_attr_host_driver_posted_cmd, NULL); 381 static DEVICE_ATTR(host_driver_reset, S_IRUGO, arcmsr_attr_host_driver_reset, NULL); 382 static DEVICE_ATTR(host_driver_abort, S_IRUGO, arcmsr_attr_host_driver_abort, NULL); 383 static DEVICE_ATTR(host_fw_model, S_IRUGO, arcmsr_attr_host_fw_model, NULL); 384 static DEVICE_ATTR(host_fw_version, S_IRUGO, arcmsr_attr_host_fw_version, NULL); 385 static DEVICE_ATTR(host_fw_request_len, S_IRUGO, arcmsr_attr_host_fw_request_len, NULL); 386 static DEVICE_ATTR(host_fw_numbers_queue, S_IRUGO, arcmsr_attr_host_fw_numbers_queue, NULL); 387 static DEVICE_ATTR(host_fw_sdram_size, S_IRUGO, arcmsr_attr_host_fw_sdram_size, NULL); 388 static DEVICE_ATTR(host_fw_hd_channels, S_IRUGO, arcmsr_attr_host_fw_hd_channels, NULL); 389 390 struct device_attribute *arcmsr_host_attrs[] = { 391 &dev_attr_host_driver_version, 392 &dev_attr_host_driver_posted_cmd, 393 &dev_attr_host_driver_reset, 394 &dev_attr_host_driver_abort, 395 &dev_attr_host_fw_model, 396 &dev_attr_host_fw_version, 397 &dev_attr_host_fw_request_len, 398 &dev_attr_host_fw_numbers_queue, 399 &dev_attr_host_fw_sdram_size, 400 &dev_attr_host_fw_hd_channels, 401 NULL, 402 }; 403