X-Git-Url: https://git.kernelconcepts.de/?a=blobdiff_plain;f=drivers%2Fscsi%2Fsd.c;h=424d557284a9afe31f2062da53db418f4a95b7aa;hb=45e79a3acdcf54113b3d7b23e9e64e6541dbfeb5;hp=5a8f55fea5ff3da628eaed926786b0713d1a8565;hpb=733abe4fff3afa13e301bc8bc5bee9aac4b59fdc;p=karo-tx-linux.git diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 5a8f55fea5ff..424d557284a9 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -58,16 +58,10 @@ #include #include #include +#include #include "scsi_logging.h" -/* - * More than enough for everybody ;) The huge number of majors - * is a leftover from 16bit dev_t days, we don't really need that - * much numberspace. - */ -#define SD_MAJORS 16 - MODULE_AUTHOR("Eric Youngdale"); MODULE_DESCRIPTION("SCSI disk (sd) driver"); MODULE_LICENSE("GPL"); @@ -88,45 +82,9 @@ MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_DISK12_MAJOR); MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_DISK13_MAJOR); MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_DISK14_MAJOR); MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_DISK15_MAJOR); - -/* - * This is limited by the naming scheme enforced in sd_probe, - * add another character to it if you really need more disks. - */ -#define SD_MAX_DISKS (((26 * 26) + 26 + 1) * 26) - -/* - * Time out in seconds for disks and Magneto-opticals (which are slower). - */ -#define SD_TIMEOUT (30 * HZ) -#define SD_MOD_TIMEOUT (75 * HZ) - -/* - * Number of allowed retries - */ -#define SD_MAX_RETRIES 5 -#define SD_PASSTHROUGH_RETRIES 1 - -/* - * Size of the initial data buffer for mode and read capacity data - */ -#define SD_BUF_SIZE 512 - -struct scsi_disk { - struct scsi_driver *driver; /* always &sd_template */ - struct scsi_device *device; - struct class_device cdev; - struct gendisk *disk; - unsigned int openers; /* protected by BKL for now, yuck */ - sector_t capacity; /* size in 512-byte sectors */ - u32 index; - u8 media_present; - u8 write_prot; - unsigned WCE : 1; /* state of disk WCE bit */ - unsigned RCD : 1; /* state of disk RCD bit, unused */ - unsigned DPOFUA : 1; /* state of disk DPOFUA bit */ -}; -#define to_scsi_disk(obj) container_of(obj,struct scsi_disk,cdev) +MODULE_ALIAS_SCSI_DEVICE(TYPE_DISK); +MODULE_ALIAS_SCSI_DEVICE(TYPE_MOD); +MODULE_ALIAS_SCSI_DEVICE(TYPE_RBC); static DEFINE_IDR(sd_index_idr); static DEFINE_SPINLOCK(sd_index_lock); @@ -136,20 +94,6 @@ static DEFINE_SPINLOCK(sd_index_lock); * object after last put) */ static DEFINE_MUTEX(sd_ref_mutex); -static int sd_revalidate_disk(struct gendisk *disk); -static void sd_rw_intr(struct scsi_cmnd * SCpnt); - -static int sd_probe(struct device *); -static int sd_remove(struct device *); -static void sd_shutdown(struct device *dev); -static void sd_rescan(struct device *); -static int sd_init_command(struct scsi_cmnd *); -static int sd_issue_flush(struct device *, sector_t *); -static void sd_prepare_flush(request_queue_t *, struct request *); -static void sd_read_capacity(struct scsi_disk *sdkp, char *diskname, - unsigned char *buffer); -static void scsi_disk_release(struct class_device *cdev); - static const char *sd_cache_types[] = { "write through", "none", "write back", "write back, no read (daft)" @@ -199,13 +143,27 @@ static ssize_t sd_store_cache_type(struct class_device *cdev, const char *buf, if (scsi_mode_select(sdp, 1, sp, 8, buffer_data, len, SD_TIMEOUT, SD_MAX_RETRIES, &data, &sshdr)) { if (scsi_sense_valid(&sshdr)) - scsi_print_sense_hdr(sdkp->disk->disk_name, &sshdr); + sd_print_sense_hdr(sdkp, &sshdr); return -EINVAL; } sd_revalidate_disk(sdkp->disk); return count; } +static ssize_t sd_store_manage_start_stop(struct class_device *cdev, + const char *buf, size_t count) +{ + struct scsi_disk *sdkp = to_scsi_disk(cdev); + struct scsi_device *sdp = sdkp->device; + + if (!capable(CAP_SYS_ADMIN)) + return -EACCES; + + sdp->manage_start_stop = simple_strtoul(buf, NULL, 10); + + return count; +} + static ssize_t sd_store_allow_restart(struct class_device *cdev, const char *buf, size_t count) { @@ -238,6 +196,14 @@ static ssize_t sd_show_fua(struct class_device *cdev, char *buf) return snprintf(buf, 20, "%u\n", sdkp->DPOFUA); } +static ssize_t sd_show_manage_start_stop(struct class_device *cdev, char *buf) +{ + struct scsi_disk *sdkp = to_scsi_disk(cdev); + struct scsi_device *sdp = sdkp->device; + + return snprintf(buf, 20, "%u\n", sdp->manage_start_stop); +} + static ssize_t sd_show_allow_restart(struct class_device *cdev, char *buf) { struct scsi_disk *sdkp = to_scsi_disk(cdev); @@ -251,6 +217,8 @@ static struct class_device_attribute sd_disk_attrs[] = { __ATTR(FUA, S_IRUGO, sd_show_fua, NULL), __ATTR(allow_restart, S_IRUGO|S_IWUSR, sd_show_allow_restart, sd_store_allow_restart), + __ATTR(manage_start_stop, S_IRUGO|S_IWUSR, sd_show_manage_start_stop, + sd_store_manage_start_stop), __ATTR_NULL, }; @@ -267,6 +235,8 @@ static struct scsi_driver sd_template = { .name = "sd", .probe = sd_probe, .remove = sd_remove, + .suspend = sd_suspend, + .resume = sd_resume, .shutdown = sd_shutdown, }, .rescan = sd_rescan, @@ -371,15 +341,19 @@ static int sd_init_command(struct scsi_cmnd * SCpnt) unsigned int this_count = SCpnt->request_bufflen >> 9; unsigned int timeout = sdp->timeout; - SCSI_LOG_HLQUEUE(1, printk("sd_init_command: disk=%s, block=%llu, " - "count=%d\n", disk->disk_name, - (unsigned long long)block, this_count)); + SCSI_LOG_HLQUEUE(1, scmd_printk(KERN_INFO, SCpnt, + "sd_init_command: block=%llu, " + "count=%d\n", + (unsigned long long)block, + this_count)); if (!sdp || !scsi_device_online(sdp) || block + rq->nr_sectors > get_capacity(disk)) { - SCSI_LOG_HLQUEUE(2, printk("Finishing %ld sectors\n", - rq->nr_sectors)); - SCSI_LOG_HLQUEUE(2, printk("Retry with 0x%p\n", SCpnt)); + SCSI_LOG_HLQUEUE(2, scmd_printk(KERN_INFO, SCpnt, + "Finishing %ld sectors\n", + rq->nr_sectors)); + SCSI_LOG_HLQUEUE(2, scmd_printk(KERN_INFO, SCpnt, + "Retry with 0x%p\n", SCpnt)); return 0; } @@ -391,8 +365,8 @@ static int sd_init_command(struct scsi_cmnd * SCpnt) /* printk("SCSI disk has been changed. Prohibiting further I/O.\n"); */ return 0; } - SCSI_LOG_HLQUEUE(2, printk("%s : block=%llu\n", - disk->disk_name, (unsigned long long)block)); + SCSI_LOG_HLQUEUE(2, scmd_printk(KERN_INFO, SCpnt, "block=%llu\n", + (unsigned long long)block)); /* * If we have a 1K hardware sectorsize, prevent access to single @@ -407,7 +381,8 @@ static int sd_init_command(struct scsi_cmnd * SCpnt) */ if (sdp->sector_size == 1024) { if ((block & 1) || (rq->nr_sectors & 1)) { - printk(KERN_ERR "sd: Bad block number requested"); + scmd_printk(KERN_ERR, SCpnt, + "Bad block number requested\n"); return 0; } else { block = block >> 1; @@ -416,7 +391,8 @@ static int sd_init_command(struct scsi_cmnd * SCpnt) } if (sdp->sector_size == 2048) { if ((block & 3) || (rq->nr_sectors & 3)) { - printk(KERN_ERR "sd: Bad block number requested"); + scmd_printk(KERN_ERR, SCpnt, + "Bad block number requested\n"); return 0; } else { block = block >> 2; @@ -425,7 +401,8 @@ static int sd_init_command(struct scsi_cmnd * SCpnt) } if (sdp->sector_size == 4096) { if ((block & 7) || (rq->nr_sectors & 7)) { - printk(KERN_ERR "sd: Bad block number requested"); + scmd_printk(KERN_ERR, SCpnt, + "Bad block number requested\n"); return 0; } else { block = block >> 3; @@ -442,13 +419,15 @@ static int sd_init_command(struct scsi_cmnd * SCpnt) SCpnt->cmnd[0] = READ_6; SCpnt->sc_data_direction = DMA_FROM_DEVICE; } else { - printk(KERN_ERR "sd: Unknown command %x\n", rq->cmd_flags); + scmd_printk(KERN_ERR, SCpnt, "Unknown command %x\n", rq->cmd_flags); return 0; } - SCSI_LOG_HLQUEUE(2, printk("%s : %s %d/%ld 512 byte blocks.\n", - disk->disk_name, (rq_data_dir(rq) == WRITE) ? - "writing" : "reading", this_count, rq->nr_sectors)); + SCSI_LOG_HLQUEUE(2, scmd_printk(KERN_INFO, SCpnt, + "%s %d/%ld 512 byte blocks.\n", + (rq_data_dir(rq) == WRITE) ? + "writing" : "reading", this_count, + rq->nr_sectors)); SCpnt->cmnd[1] = 0; @@ -490,7 +469,8 @@ static int sd_init_command(struct scsi_cmnd * SCpnt) * during operation and thus turned off * use_10_for_rw. */ - printk(KERN_ERR "sd: FUA write on READ/WRITE(6) drive\n"); + scmd_printk(KERN_ERR, SCpnt, + "FUA write on READ/WRITE(6) drive\n"); return 0; } @@ -549,7 +529,7 @@ static int sd_open(struct inode *inode, struct file *filp) return -ENXIO; - SCSI_LOG_HLQUEUE(3, printk("sd_open: disk=%s\n", disk->disk_name)); + SCSI_LOG_HLQUEUE(3, sd_printk(KERN_INFO, sdkp, "sd_open\n")); sdev = sdkp->device; @@ -619,7 +599,7 @@ static int sd_release(struct inode *inode, struct file *filp) struct scsi_disk *sdkp = scsi_disk(disk); struct scsi_device *sdev = sdkp->device; - SCSI_LOG_HLQUEUE(3, printk("sd_release: disk=%s\n", disk->disk_name)); + SCSI_LOG_HLQUEUE(3, sd_printk(KERN_INFO, sdkp, "sd_release\n")); if (!--sdkp->openers && sdev->removable) { if (scsi_block_when_processing_errors(sdev)) @@ -704,7 +684,7 @@ static int sd_ioctl(struct inode * inode, struct file * filp, case SCSI_IOCTL_GET_BUS_NUMBER: return scsi_ioctl(sdp, cmd, p); default: - error = scsi_cmd_ioctl(filp, disk, cmd, p); + error = scsi_cmd_ioctl(filp, disk->queue, disk, cmd, p); if (error != -ENOTTY) return error; } @@ -732,8 +712,7 @@ static int sd_media_changed(struct gendisk *disk) struct scsi_device *sdp = sdkp->device; int retval; - SCSI_LOG_HLQUEUE(3, printk("sd_media_changed: disk=%s\n", - disk->disk_name)); + SCSI_LOG_HLQUEUE(3, sd_printk(KERN_INFO, sdkp, "sd_media_changed\n")); if (!sdp->removable) return 0; @@ -786,9 +765,10 @@ not_present: return 1; } -static int sd_sync_cache(struct scsi_device *sdp) +static int sd_sync_cache(struct scsi_disk *sdkp) { int retries, res; + struct scsi_device *sdp = sdkp->device; struct scsi_sense_hdr sshdr; if (!scsi_device_online(sdp)) @@ -809,28 +789,27 @@ static int sd_sync_cache(struct scsi_device *sdp) break; } - if (res) { printk(KERN_WARNING "FAILED\n status = %x, message = %02x, " - "host = %d, driver = %02x\n ", - status_byte(res), msg_byte(res), - host_byte(res), driver_byte(res)); - if (driver_byte(res) & DRIVER_SENSE) - scsi_print_sense_hdr("sd", &sshdr); + if (res) { + sd_print_result(sdkp, res); + if (driver_byte(res) & DRIVER_SENSE) + sd_print_sense_hdr(sdkp, &sshdr); } - return res; + if (res) + return -EIO; + return 0; } static int sd_issue_flush(struct device *dev, sector_t *error_sector) { int ret = 0; - struct scsi_device *sdp = to_scsi_device(dev); struct scsi_disk *sdkp = scsi_disk_get_from_dev(dev); if (!sdkp) return -ENODEV; if (sdkp->WCE) - ret = sd_sync_cache(sdp); + ret = sd_sync_cache(sdkp); scsi_disk_put(sdkp); return ret; } @@ -928,12 +907,14 @@ static void sd_rw_intr(struct scsi_cmnd * SCpnt) sense_deferred = scsi_sense_is_deferred(&sshdr); } #ifdef CONFIG_SCSI_LOGGING - SCSI_LOG_HLCOMPLETE(1, printk("sd_rw_intr: %s: res=0x%x\n", - SCpnt->request->rq_disk->disk_name, result)); + SCSI_LOG_HLCOMPLETE(1, scsi_print_result(SCpnt)); if (sense_valid) { - SCSI_LOG_HLCOMPLETE(1, printk("sd_rw_intr: sb[respc,sk,asc," - "ascq]=%x,%x,%x,%x\n", sshdr.response_code, - sshdr.sense_key, sshdr.asc, sshdr.ascq)); + SCSI_LOG_HLCOMPLETE(1, scmd_printk(KERN_INFO, SCpnt, + "sd_rw_intr: sb[respc,sk,asc," + "ascq]=%x,%x,%x,%x\n", + sshdr.response_code, + sshdr.sense_key, sshdr.asc, + sshdr.ascq)); } #endif if (driver_byte(result) != DRIVER_SENSE && @@ -1025,7 +1006,7 @@ static int media_not_present(struct scsi_disk *sdkp, * spinup disk - called only in sd_revalidate_disk() */ static void -sd_spinup_disk(struct scsi_disk *sdkp, char *diskname) +sd_spinup_disk(struct scsi_disk *sdkp) { unsigned char cmd[10]; unsigned long spintime_expire = 0; @@ -1069,9 +1050,10 @@ sd_spinup_disk(struct scsi_disk *sdkp, char *diskname) if ((driver_byte(the_result) & DRIVER_SENSE) == 0) { /* no sense, TUR either succeeded or failed * with a status error */ - if(!spintime && !scsi_status_is_good(the_result)) - printk(KERN_NOTICE "%s: Unit Not Ready, " - "error = 0x%x\n", diskname, the_result); + if(!spintime && !scsi_status_is_good(the_result)) { + sd_printk(KERN_NOTICE, sdkp, "Unit Not Ready\n"); + sd_print_result(sdkp, the_result); + } break; } @@ -1096,8 +1078,7 @@ sd_spinup_disk(struct scsi_disk *sdkp, char *diskname) */ } else if (sense_valid && sshdr.sense_key == NOT_READY) { if (!spintime) { - printk(KERN_NOTICE "%s: Spinning up disk...", - diskname); + sd_printk(KERN_NOTICE, sdkp, "Spinning up disk..."); cmd[0] = START_STOP; cmd[1] = 1; /* Return immediately */ memset((void *) &cmd[2], 0, 8); @@ -1130,9 +1111,8 @@ sd_spinup_disk(struct scsi_disk *sdkp, char *diskname) /* we don't understand the sense code, so it's * probably pointless to loop */ if(!spintime) { - printk(KERN_NOTICE "%s: Unit Not Ready, " - "sense:\n", diskname); - scsi_print_sense_hdr("", &sshdr); + sd_printk(KERN_NOTICE, sdkp, "Unit Not Ready\n"); + sd_print_sense_hdr(sdkp, &sshdr); } break; } @@ -1151,8 +1131,7 @@ sd_spinup_disk(struct scsi_disk *sdkp, char *diskname) * read disk capacity */ static void -sd_read_capacity(struct scsi_disk *sdkp, char *diskname, - unsigned char *buffer) +sd_read_capacity(struct scsi_disk *sdkp, unsigned char *buffer) { unsigned char cmd[16]; int the_result, retries; @@ -1191,18 +1170,12 @@ repeat: } while (the_result && retries); if (the_result && !longrc) { - printk(KERN_NOTICE "%s : READ CAPACITY failed.\n" - "%s : status=%x, message=%02x, host=%d, driver=%02x \n", - diskname, diskname, - status_byte(the_result), - msg_byte(the_result), - host_byte(the_result), - driver_byte(the_result)); - + sd_printk(KERN_NOTICE, sdkp, "READ CAPACITY failed\n"); + sd_print_result(sdkp, the_result); if (driver_byte(the_result) & DRIVER_SENSE) - scsi_print_sense_hdr("sd", &sshdr); + sd_print_sense_hdr(sdkp, &sshdr); else - printk("%s : sense not available. \n", diskname); + sd_printk(KERN_NOTICE, sdkp, "Sense not available.\n"); /* Set dirty bit for removable devices if not ready - * sometimes drives will not report this properly. */ @@ -1218,16 +1191,10 @@ repeat: return; } else if (the_result && longrc) { /* READ CAPACITY(16) has been failed */ - printk(KERN_NOTICE "%s : READ CAPACITY(16) failed.\n" - "%s : status=%x, message=%02x, host=%d, driver=%02x \n", - diskname, diskname, - status_byte(the_result), - msg_byte(the_result), - host_byte(the_result), - driver_byte(the_result)); - printk(KERN_NOTICE "%s : use 0xffffffff as device size\n", - diskname); - + sd_printk(KERN_NOTICE, sdkp, "READ CAPACITY(16) failed\n"); + sd_print_result(sdkp, the_result); + sd_printk(KERN_NOTICE, sdkp, "Use 0xffffffff as device size\n"); + sdkp->capacity = 1 + (sector_t) 0xffffffff; goto got_data; } @@ -1238,14 +1205,14 @@ repeat: if (buffer[0] == 0xff && buffer[1] == 0xff && buffer[2] == 0xff && buffer[3] == 0xff) { if(sizeof(sdkp->capacity) > 4) { - printk(KERN_NOTICE "%s : very big device. try to use" - " READ CAPACITY(16).\n", diskname); + sd_printk(KERN_NOTICE, sdkp, "Very big device. " + "Trying to use READ CAPACITY(16).\n"); longrc = 1; goto repeat; } - printk(KERN_ERR "%s: too big for this kernel. Use a " - "kernel compiled with support for large block " - "devices.\n", diskname); + sd_printk(KERN_ERR, sdkp, "Too big for this kernel. Use " + "a kernel compiled with support for large " + "block devices.\n"); sdkp->capacity = 0; goto got_data; } @@ -1284,8 +1251,8 @@ repeat: got_data: if (sector_size == 0) { sector_size = 512; - printk(KERN_NOTICE "%s : sector size 0 reported, " - "assuming 512.\n", diskname); + sd_printk(KERN_NOTICE, sdkp, "Sector size 0 reported, " + "assuming 512.\n"); } if (sector_size != 512 && @@ -1293,8 +1260,8 @@ got_data: sector_size != 2048 && sector_size != 4096 && sector_size != 256) { - printk(KERN_NOTICE "%s : unsupported sector size " - "%d.\n", diskname, sector_size); + sd_printk(KERN_NOTICE, sdkp, "Unsupported sector size %d.\n", + sector_size); /* * The user might want to re-format the drive with * a supported sectorsize. Once this happens, it @@ -1327,10 +1294,10 @@ got_data: mb -= sz - 974; sector_div(mb, 1950); - printk(KERN_NOTICE "SCSI device %s: " - "%llu %d-byte hdwr sectors (%llu MB)\n", - diskname, (unsigned long long)sdkp->capacity, - hard_sector, (unsigned long long)mb); + sd_printk(KERN_NOTICE, sdkp, + "%llu %d-byte hardware sectors (%llu MB)\n", + (unsigned long long)sdkp->capacity, + hard_sector, (unsigned long long)mb); } /* Rescale capacity to 512-byte units */ @@ -1362,8 +1329,7 @@ sd_do_mode_sense(struct scsi_device *sdp, int dbd, int modepage, * called with buffer of length SD_BUF_SIZE */ static void -sd_read_write_protect_flag(struct scsi_disk *sdkp, char *diskname, - unsigned char *buffer) +sd_read_write_protect_flag(struct scsi_disk *sdkp, unsigned char *buffer) { int res; struct scsi_device *sdp = sdkp->device; @@ -1371,7 +1337,7 @@ sd_read_write_protect_flag(struct scsi_disk *sdkp, char *diskname, set_disk_ro(sdkp->disk, 0); if (sdp->skip_ms_page_3f) { - printk(KERN_NOTICE "%s: assuming Write Enabled\n", diskname); + sd_printk(KERN_NOTICE, sdkp, "Assuming Write Enabled\n"); return; } @@ -1403,15 +1369,16 @@ sd_read_write_protect_flag(struct scsi_disk *sdkp, char *diskname, } if (!scsi_status_is_good(res)) { - printk(KERN_WARNING - "%s: test WP failed, assume Write Enabled\n", diskname); + sd_printk(KERN_WARNING, sdkp, + "Test WP failed, assume Write Enabled\n"); } else { sdkp->write_prot = ((data.device_specific & 0x80) != 0); set_disk_ro(sdkp->disk, sdkp->write_prot); - printk(KERN_NOTICE "%s: Write Protect is %s\n", diskname, - sdkp->write_prot ? "on" : "off"); - printk(KERN_DEBUG "%s: Mode Sense: %02x %02x %02x %02x\n", - diskname, buffer[0], buffer[1], buffer[2], buffer[3]); + sd_printk(KERN_NOTICE, sdkp, "Write Protect is %s\n", + sdkp->write_prot ? "on" : "off"); + sd_printk(KERN_DEBUG, sdkp, + "Mode Sense: %02x %02x %02x %02x\n", + buffer[0], buffer[1], buffer[2], buffer[3]); } } @@ -1420,8 +1387,7 @@ sd_read_write_protect_flag(struct scsi_disk *sdkp, char *diskname, * called with buffer of length SD_BUF_SIZE */ static void -sd_read_cache_type(struct scsi_disk *sdkp, char *diskname, - unsigned char *buffer) +sd_read_cache_type(struct scsi_disk *sdkp, unsigned char *buffer) { int len = 0, res; struct scsi_device *sdp = sdkp->device; @@ -1450,8 +1416,7 @@ sd_read_cache_type(struct scsi_disk *sdkp, char *diskname, if (!data.header_length) { modepage = 6; - printk(KERN_ERR "%s: missing header in MODE_SENSE response\n", - diskname); + sd_printk(KERN_ERR, sdkp, "Missing header in MODE_SENSE response\n"); } /* that went OK, now ask for the proper length */ @@ -1478,13 +1443,12 @@ sd_read_cache_type(struct scsi_disk *sdkp, char *diskname, int offset = data.header_length + data.block_descriptor_length; if (offset >= SD_BUF_SIZE - 2) { - printk(KERN_ERR "%s: malformed MODE SENSE response", - diskname); + sd_printk(KERN_ERR, sdkp, "Malformed MODE SENSE response\n"); goto defaults; } if ((buffer[offset] & 0x3f) != modepage) { - printk(KERN_ERR "%s: got wrong page\n", diskname); + sd_printk(KERN_ERR, sdkp, "Got wrong page\n"); goto defaults; } @@ -1498,14 +1462,13 @@ sd_read_cache_type(struct scsi_disk *sdkp, char *diskname, sdkp->DPOFUA = (data.device_specific & 0x10) != 0; if (sdkp->DPOFUA && !sdkp->device->use_10_for_rw) { - printk(KERN_NOTICE "SCSI device %s: uses " - "READ/WRITE(6), disabling FUA\n", diskname); + sd_printk(KERN_NOTICE, sdkp, + "Uses READ/WRITE(6), disabling FUA\n"); sdkp->DPOFUA = 0; } - printk(KERN_NOTICE "SCSI device %s: " - "write cache: %s, read cache: %s, %s\n", - diskname, + sd_printk(KERN_NOTICE, sdkp, + "Write cache: %s, read cache: %s, %s\n", sdkp->WCE ? "enabled" : "disabled", sdkp->RCD ? "disabled" : "enabled", sdkp->DPOFUA ? "supports DPO and FUA" @@ -1518,15 +1481,13 @@ bad_sense: if (scsi_sense_valid(&sshdr) && sshdr.sense_key == ILLEGAL_REQUEST && sshdr.asc == 0x24 && sshdr.ascq == 0x0) - printk(KERN_NOTICE "%s: cache data unavailable\n", - diskname); /* Invalid field in CDB */ + /* Invalid field in CDB */ + sd_printk(KERN_NOTICE, sdkp, "Cache data unavailable\n"); else - printk(KERN_ERR "%s: asking for cache data failed\n", - diskname); + sd_printk(KERN_ERR, sdkp, "Asking for cache data failed\n"); defaults: - printk(KERN_ERR "%s: assuming drive cache: write through\n", - diskname); + sd_printk(KERN_ERR, sdkp, "Assuming drive cache: write through\n"); sdkp->WCE = 0; sdkp->RCD = 0; sdkp->DPOFUA = 0; @@ -1544,7 +1505,8 @@ static int sd_revalidate_disk(struct gendisk *disk) unsigned char *buffer; unsigned ordered; - SCSI_LOG_HLQUEUE(3, printk("sd_revalidate_disk: disk=%s\n", disk->disk_name)); + SCSI_LOG_HLQUEUE(3, sd_printk(KERN_INFO, sdkp, + "sd_revalidate_disk\n")); /* * If the device is offline, don't try and read capacity or any @@ -1553,10 +1515,10 @@ static int sd_revalidate_disk(struct gendisk *disk) if (!scsi_device_online(sdp)) goto out; - buffer = kmalloc(SD_BUF_SIZE, GFP_KERNEL | __GFP_DMA); + buffer = kmalloc(SD_BUF_SIZE, GFP_KERNEL); if (!buffer) { - printk(KERN_WARNING "(sd_revalidate_disk:) Memory allocation " - "failure.\n"); + sd_printk(KERN_WARNING, sdkp, "sd_revalidate_disk: Memory " + "allocation failure.\n"); goto out; } @@ -1568,16 +1530,16 @@ static int sd_revalidate_disk(struct gendisk *disk) sdkp->WCE = 0; sdkp->RCD = 0; - sd_spinup_disk(sdkp, disk->disk_name); + sd_spinup_disk(sdkp); /* * Without media there is no reason to ask; moreover, some devices * react badly if we do. */ if (sdkp->media_present) { - sd_read_capacity(sdkp, disk->disk_name, buffer); - sd_read_write_protect_flag(sdkp, disk->disk_name, buffer); - sd_read_cache_type(sdkp, disk->disk_name, buffer); + sd_read_capacity(sdkp, buffer); + sd_read_write_protect_flag(sdkp, buffer); + sd_read_cache_type(sdkp, buffer); } /* @@ -1709,8 +1671,8 @@ static int sd_probe(struct device *dev) dev_set_drvdata(dev, sdkp); add_disk(gd); - sdev_printk(KERN_NOTICE, sdp, "Attached scsi %sdisk %s\n", - sdp->removable ? "removable " : "", gd->disk_name); + sd_printk(KERN_NOTICE, sdkp, "Attached SCSI %sdisk\n", + sdp->removable ? "removable " : ""); return 0; @@ -1774,6 +1736,31 @@ static void scsi_disk_release(struct class_device *cdev) kfree(sdkp); } +static int sd_start_stop_device(struct scsi_disk *sdkp, int start) +{ + unsigned char cmd[6] = { START_STOP }; /* START_VALID */ + struct scsi_sense_hdr sshdr; + struct scsi_device *sdp = sdkp->device; + int res; + + if (start) + cmd[4] |= 1; /* START */ + + if (!scsi_device_online(sdp)) + return -ENODEV; + + res = scsi_execute_req(sdp, cmd, DMA_NONE, NULL, 0, &sshdr, + SD_TIMEOUT, SD_MAX_RETRIES); + if (res) { + sd_printk(KERN_WARNING, sdkp, "START_STOP FAILED\n"); + sd_print_result(sdkp, res); + if (driver_byte(res) & DRIVER_SENSE) + sd_print_sense_hdr(sdkp, &sshdr); + } + + return res; +} + /* * Send a SYNCHRONIZE CACHE instruction down to the device through * the normal SCSI command structure. Wait for the command to @@ -1781,18 +1768,64 @@ static void scsi_disk_release(struct class_device *cdev) */ static void sd_shutdown(struct device *dev) { - struct scsi_device *sdp = to_scsi_device(dev); struct scsi_disk *sdkp = scsi_disk_get_from_dev(dev); if (!sdkp) return; /* this can happen */ if (sdkp->WCE) { - printk(KERN_NOTICE "Synchronizing SCSI cache for disk %s: \n", - sdkp->disk->disk_name); - sd_sync_cache(sdp); + sd_printk(KERN_NOTICE, sdkp, "Synchronizing SCSI cache\n"); + sd_sync_cache(sdkp); + } + + if (system_state != SYSTEM_RESTART && sdkp->device->manage_start_stop) { + sd_printk(KERN_NOTICE, sdkp, "Stopping disk\n"); + sd_start_stop_device(sdkp, 0); + } + + scsi_disk_put(sdkp); +} + +static int sd_suspend(struct device *dev, pm_message_t mesg) +{ + struct scsi_disk *sdkp = scsi_disk_get_from_dev(dev); + int ret = 0; + + if (!sdkp) + return 0; /* this can happen */ + + if (sdkp->WCE) { + sd_printk(KERN_NOTICE, sdkp, "Synchronizing SCSI cache\n"); + ret = sd_sync_cache(sdkp); + if (ret) + goto done; + } + + if (mesg.event == PM_EVENT_SUSPEND && + sdkp->device->manage_start_stop) { + sd_printk(KERN_NOTICE, sdkp, "Stopping disk\n"); + ret = sd_start_stop_device(sdkp, 0); } + +done: scsi_disk_put(sdkp); + return ret; +} + +static int sd_resume(struct device *dev) +{ + struct scsi_disk *sdkp = scsi_disk_get_from_dev(dev); + int ret = 0; + + if (!sdkp->device->manage_start_stop) + goto done; + + sd_printk(KERN_NOTICE, sdkp, "Starting disk\n"); + ret = sd_start_stop_device(sdkp, 1); + +done: + scsi_disk_put(sdkp); + return ret; } /** @@ -1852,3 +1885,19 @@ static void __exit exit_sd(void) module_init(init_sd); module_exit(exit_sd); + +static void sd_print_sense_hdr(struct scsi_disk *sdkp, + struct scsi_sense_hdr *sshdr) +{ + sd_printk(KERN_INFO, sdkp, ""); + scsi_show_sense_hdr(sshdr); + sd_printk(KERN_INFO, sdkp, ""); + scsi_show_extd_sense(sshdr->asc, sshdr->ascq); +} + +static void sd_print_result(struct scsi_disk *sdkp, int result) +{ + sd_printk(KERN_INFO, sdkp, ""); + scsi_show_result(result); +} +