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: 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 kobject *kobj, 63 struct bin_attribute *bin, 64 char *buf, loff_t off, 65 size_t count) 66 { 67 struct device *dev = container_of(kobj,struct device,kobj); 68 struct Scsi_Host *host = class_to_shost(dev); 69 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata; 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; 89 uint8_t __iomem *iop_data; 90 int32_t iop_len; 91 92 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW; 93 prbuffer = arcmsr_get_iop_rqbuffer(acb); 94 iop_data = prbuffer->data; 95 iop_len = readl(&prbuffer->data_len); 96 while (iop_len > 0) { 97 acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data); 98 acb->rqbuf_lastindex++; 99 acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER; 100 iop_data++; 101 iop_len--; 102 } 103 arcmsr_iop_message_read(acb); 104 } 105 return (allxfer_len); 106 } 107 108 static ssize_t arcmsr_sysfs_iop_message_write(struct kobject *kobj, 109 struct bin_attribute *bin, 110 char *buf, loff_t off, 111 size_t count) 112 { 113 struct device *dev = container_of(kobj,struct device,kobj); 114 struct Scsi_Host *host = class_to_shost(dev); 115 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata; 116 int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex; 117 uint8_t *pQbuffer, *ptmpuserbuffer; 118 119 if (!capable(CAP_SYS_ADMIN)) 120 return -EACCES; 121 if (count > 1032) 122 return -EINVAL; 123 /* do message unit write. */ 124 ptmpuserbuffer = (uint8_t *)buf; 125 user_len = (int32_t)count; 126 wqbuf_lastindex = acb->wqbuf_lastindex; 127 wqbuf_firstindex = acb->wqbuf_firstindex; 128 if (wqbuf_lastindex != wqbuf_firstindex) { 129 arcmsr_post_ioctldata2iop(acb); 130 return 0; /*need retry*/ 131 } else { 132 my_empty_len = (wqbuf_firstindex-wqbuf_lastindex - 1) 133 &(ARCMSR_MAX_QBUFFER - 1); 134 if (my_empty_len >= user_len) { 135 while (user_len > 0) { 136 pQbuffer = 137 &acb->wqbuffer[acb->wqbuf_lastindex]; 138 memcpy(pQbuffer, ptmpuserbuffer, 1); 139 acb->wqbuf_lastindex++; 140 acb->wqbuf_lastindex %= ARCMSR_MAX_QBUFFER; 141 ptmpuserbuffer++; 142 user_len--; 143 } 144 if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) { 145 acb->acb_flags &= 146 ~ACB_F_MESSAGE_WQBUFFER_CLEARED; 147 arcmsr_post_ioctldata2iop(acb); 148 } 149 return count; 150 } else { 151 return 0; /*need retry*/ 152 } 153 } 154 } 155 156 static ssize_t arcmsr_sysfs_iop_message_clear(struct kobject *kobj, 157 struct bin_attribute *bin, 158 char *buf, loff_t off, 159 size_t count) 160 { 161 struct device *dev = container_of(kobj,struct device,kobj); 162 struct Scsi_Host *host = class_to_shost(dev); 163 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata; 164 uint8_t *pQbuffer; 165 166 if (!capable(CAP_SYS_ADMIN)) 167 return -EACCES; 168 169 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) { 170 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW; 171 arcmsr_iop_message_read(acb); 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 } 187 188 static 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 }; 197 198 static 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 }; 207 208 static 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 }; 217 218 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