#include <scsi/scsi_host.h>
#include <scsi/scsi_ioctl.h>
#include <scsi/scsicam.h>
+#include <scsi/sd.h>
#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");
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);
* 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)"
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)
{
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);
__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,
};
.name = "sd",
.probe = sd_probe,
.remove = sd_remove,
+ .suspend = sd_suspend,
+ .resume = sd_resume,
.shutdown = sd_shutdown,
},
.rescan = sd_rescan,
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;
}
/* 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
*/
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;
}
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;
}
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;
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;
* 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;
}
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;
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))
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;
}
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;
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))
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;
}
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 &&
* 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;
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;
}
*/
} 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);
/* 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;
}
* 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;
} 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. */
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;
}
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;
}
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 &&
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
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 */
* 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;
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;
}
}
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]);
}
}
* 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;
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 */
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;
}
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"
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;
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
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;
}
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);
}
/*
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;
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
*/
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;
}
/**
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);
+}
+
projects / karo-tx-linux.git / blobdiff