#include <linux/libata.h>
#include <linux/hdreg.h>
#include <linux/uaccess.h>
+#include <linux/suspend.h>
#include "libata.h"
ata_scsi_lpm_show, ata_scsi_lpm_put);
EXPORT_SYMBOL_GPL(dev_attr_link_power_management_policy);
+static ssize_t ata_scsi_park_show(struct device *device,
+ struct device_attribute *attr, char *buf)
+{
+ struct scsi_device *sdev = to_scsi_device(device);
+ struct ata_port *ap;
+ struct ata_link *link;
+ struct ata_device *dev;
+ unsigned long flags, now;
+ unsigned int uninitialized_var(msecs);
+ int rc = 0;
+
+ ap = ata_shost_to_port(sdev->host);
+
+ spin_lock_irqsave(ap->lock, flags);
+ dev = ata_scsi_find_dev(ap, sdev);
+ if (!dev) {
+ rc = -ENODEV;
+ goto unlock;
+ }
+ if (dev->flags & ATA_DFLAG_NO_UNLOAD) {
+ rc = -EOPNOTSUPP;
+ goto unlock;
+ }
+
+ link = dev->link;
+ now = jiffies;
+ if (ap->pflags & ATA_PFLAG_EH_IN_PROGRESS &&
+ link->eh_context.unloaded_mask & (1 << dev->devno) &&
+ time_after(dev->unpark_deadline, now))
+ msecs = jiffies_to_msecs(dev->unpark_deadline - now);
+ else
+ msecs = 0;
+
+unlock:
+ spin_unlock_irq(ap->lock);
+
+ return rc ? rc : snprintf(buf, 20, "%u\n", msecs);
+}
+
+static ssize_t ata_scsi_park_store(struct device *device,
+ struct device_attribute *attr,
+ const char *buf, size_t len)
+{
+ struct scsi_device *sdev = to_scsi_device(device);
+ struct ata_port *ap;
+ struct ata_device *dev;
+ long int input;
+ unsigned long flags;
+ int rc;
+
+ rc = strict_strtol(buf, 10, &input);
+ if (rc || input < -2)
+ return -EINVAL;
+ if (input > ATA_TMOUT_MAX_PARK) {
+ rc = -EOVERFLOW;
+ input = ATA_TMOUT_MAX_PARK;
+ }
+
+ ap = ata_shost_to_port(sdev->host);
+
+ spin_lock_irqsave(ap->lock, flags);
+ dev = ata_scsi_find_dev(ap, sdev);
+ if (unlikely(!dev)) {
+ rc = -ENODEV;
+ goto unlock;
+ }
+ if (dev->class != ATA_DEV_ATA) {
+ rc = -EOPNOTSUPP;
+ goto unlock;
+ }
+
+ if (input >= 0) {
+ if (dev->flags & ATA_DFLAG_NO_UNLOAD) {
+ rc = -EOPNOTSUPP;
+ goto unlock;
+ }
+
+ dev->unpark_deadline = ata_deadline(jiffies, input);
+ dev->link->eh_info.dev_action[dev->devno] |= ATA_EH_PARK;
+ ata_port_schedule_eh(ap);
+ complete(&ap->park_req_pending);
+ } else {
+ switch (input) {
+ case -1:
+ dev->flags &= ~ATA_DFLAG_NO_UNLOAD;
+ break;
+ case -2:
+ dev->flags |= ATA_DFLAG_NO_UNLOAD;
+ break;
+ }
+ }
+unlock:
+ spin_unlock_irqrestore(ap->lock, flags);
+
+ return rc ? rc : len;
+}
+DEVICE_ATTR(unload_heads, S_IRUGO | S_IWUSR,
+ ata_scsi_park_show, ata_scsi_park_store);
+EXPORT_SYMBOL_GPL(dev_attr_unload_heads);
+
static void ata_scsi_set_sense(struct scsi_cmnd *cmd, u8 sk, u8 asc, u8 ascq)
{
cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
scsi_build_sense_buffer(0, cmd->sense_buffer, sk, asc, ascq);
}
+static ssize_t
+ata_scsi_em_message_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct Scsi_Host *shost = class_to_shost(dev);
+ struct ata_port *ap = ata_shost_to_port(shost);
+ if (ap->ops->em_store && (ap->flags & ATA_FLAG_EM))
+ return ap->ops->em_store(ap, buf, count);
+ return -EINVAL;
+}
+
+static ssize_t
+ata_scsi_em_message_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(dev);
+ struct ata_port *ap = ata_shost_to_port(shost);
+
+ if (ap->ops->em_show && (ap->flags & ATA_FLAG_EM))
+ return ap->ops->em_show(ap, buf);
+ return -EINVAL;
+}
+DEVICE_ATTR(em_message, S_IRUGO | S_IWUGO,
+ ata_scsi_em_message_show, ata_scsi_em_message_store);
+EXPORT_SYMBOL_GPL(dev_attr_em_message);
+
+static ssize_t
+ata_scsi_em_message_type_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(dev);
+ struct ata_port *ap = ata_shost_to_port(shost);
+
+ return snprintf(buf, 23, "%d\n", ap->em_message_type);
+}
+DEVICE_ATTR(em_message_type, S_IRUGO,
+ ata_scsi_em_message_type_show, NULL);
+EXPORT_SYMBOL_GPL(dev_attr_em_message_type);
+
+static ssize_t
+ata_scsi_activity_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct scsi_device *sdev = to_scsi_device(dev);
+ struct ata_port *ap = ata_shost_to_port(sdev->host);
+ struct ata_device *atadev = ata_scsi_find_dev(ap, sdev);
+
+ if (ap->ops->sw_activity_show && (ap->flags & ATA_FLAG_SW_ACTIVITY))
+ return ap->ops->sw_activity_show(atadev, buf);
+ return -EINVAL;
+}
+
+static ssize_t
+ata_scsi_activity_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct scsi_device *sdev = to_scsi_device(dev);
+ struct ata_port *ap = ata_shost_to_port(sdev->host);
+ struct ata_device *atadev = ata_scsi_find_dev(ap, sdev);
+ enum sw_activity val;
+ int rc;
+
+ if (ap->ops->sw_activity_store && (ap->flags & ATA_FLAG_SW_ACTIVITY)) {
+ val = simple_strtoul(buf, NULL, 0);
+ switch (val) {
+ case OFF: case BLINK_ON: case BLINK_OFF:
+ rc = ap->ops->sw_activity_store(atadev, val);
+ if (!rc)
+ return count;
+ else
+ return rc;
+ }
+ }
+ return -EINVAL;
+}
+DEVICE_ATTR(sw_activity, S_IWUGO | S_IRUGO, ata_scsi_activity_show,
+ ata_scsi_activity_store);
+EXPORT_SYMBOL_GPL(dev_attr_sw_activity);
+
+struct device_attribute *ata_common_sdev_attrs[] = {
+ &dev_attr_unload_heads,
+ NULL
+};
+EXPORT_SYMBOL_GPL(ata_common_sdev_attrs);
+
static void ata_scsi_invalid_field(struct scsi_cmnd *cmd,
void (*done)(struct scsi_cmnd *))
{
/**
* ata_get_identity - Handler for HDIO_GET_IDENTITY ioctl
+ * @ap: target port
* @sdev: SCSI device to get identify data for
* @arg: User buffer area for identify data
*
* RETURNS:
* Zero on success, negative errno on error.
*/
-static int ata_get_identity(struct scsi_device *sdev, void __user *arg)
+static int ata_get_identity(struct ata_port *ap, struct scsi_device *sdev,
+ void __user *arg)
{
- struct ata_port *ap = ata_shost_to_port(sdev->host);
struct ata_device *dev = ata_scsi_find_dev(ap, sdev);
u16 __user *dst = arg;
char buf[40];
scsi_cmd[0] = ATA_16;
scsi_cmd[4] = args[2];
- if (args[0] == WIN_SMART) { /* hack -- ide driver does this too... */
+ if (args[0] == ATA_CMD_SMART) { /* hack -- ide driver does this too */
scsi_cmd[6] = args[3];
scsi_cmd[8] = args[1];
scsi_cmd[10] = 0x4f;
/* Good values for timeout and retries? Values below
from scsi_ioctl_send_command() for default case... */
cmd_result = scsi_execute(scsidev, scsi_cmd, data_dir, argbuf, argsize,
- sensebuf, (10*HZ), 5, 0);
+ sensebuf, (10*HZ), 5, 0, NULL);
if (driver_byte(cmd_result) == DRIVER_SENSE) {/* sense data available */
u8 *desc = sensebuf + 8;
/* Good values for timeout and retries? Values below
from scsi_ioctl_send_command() for default case... */
cmd_result = scsi_execute(scsidev, scsi_cmd, DMA_NONE, NULL, 0,
- sensebuf, (10*HZ), 5, 0);
+ sensebuf, (10*HZ), 5, 0, NULL);
if (driver_byte(cmd_result) == DRIVER_SENSE) {/* sense data available */
u8 *desc = sensebuf + 8;
return rc;
}
-int ata_scsi_ioctl(struct scsi_device *scsidev, int cmd, void __user *arg)
+int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *scsidev,
+ int cmd, void __user *arg)
{
int val = -EINVAL, rc = -EINVAL;
return 0;
case HDIO_GET_IDENTITY:
- return ata_get_identity(scsidev, arg);
+ return ata_get_identity(ap, scsidev, arg);
case HDIO_DRIVE_CMD:
if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
return rc;
}
+EXPORT_SYMBOL_GPL(ata_sas_scsi_ioctl);
+
+int ata_scsi_ioctl(struct scsi_device *scsidev, int cmd, void __user *arg)
+{
+ return ata_sas_scsi_ioctl(ata_shost_to_port(scsidev->host),
+ scsidev, cmd, arg);
+}
+EXPORT_SYMBOL_GPL(ata_scsi_ioctl);
/**
* ata_scsi_qc_new - acquire new ata_queued_cmd reference
static int ata_scsi_dev_config(struct scsi_device *sdev,
struct ata_device *dev)
{
+ if (!ata_id_has_unload(dev->id))
+ dev->flags |= ATA_DFLAG_NO_UNLOAD;
+
/* configure max sectors */
blk_queue_max_sectors(sdev->request_queue, dev->max_sectors);
/* set the min alignment and padding */
blk_queue_update_dma_alignment(sdev->request_queue,
ATA_DMA_PAD_SZ - 1);
- blk_queue_dma_pad(sdev->request_queue, ATA_DMA_PAD_SZ - 1);
+ blk_queue_update_dma_pad(sdev->request_queue,
+ ATA_DMA_PAD_SZ - 1);
/* configure draining */
buf = kmalloc(ATAPI_MAX_DRAIN, q->bounce_gfp | GFP_KERNEL);
blk_queue_dma_drain(q, atapi_drain_needed, buf, ATAPI_MAX_DRAIN);
} else {
+ if (ata_id_is_ssd(dev->id))
+ queue_flag_set_unlocked(QUEUE_FLAG_NONROT,
+ sdev->request_queue);
+
/* ATA devices must be sector aligned */
blk_queue_update_dma_alignment(sdev->request_queue,
ATA_SECT_SIZE - 1);
if (((cdb[4] >> 4) & 0xf) != 0)
goto invalid_fld; /* power conditions not supported */
- if (qc->dev->horkage & ATA_HORKAGE_SKIP_PM) {
- /* the device lacks PM support, finish without doing anything */
- scmd->result = SAM_STAT_GOOD;
- return 1;
- }
-
if (cdb[4] & 0x1) {
tf->nsect = 1; /* 1 sector, lba=0 */
tf->command = ATA_CMD_VERIFY; /* READ VERIFY */
} else {
+ /* Some odd clown BIOSen issue spindown on power off (ACPI S4
+ * or S5) causing some drives to spin up and down again.
+ */
+ if ((qc->ap->flags & ATA_FLAG_NO_POWEROFF_SPINDOWN) &&
+ system_state == SYSTEM_POWER_OFF)
+ goto skip;
+
+ if ((qc->ap->flags & ATA_FLAG_NO_HIBERNATE_SPINDOWN) &&
+ system_entering_hibernation())
+ goto skip;
+
/* XXX: This is for backward compatibility, will be
* removed. Read Documentation/feature-removal-schedule.txt
* for more info.
scmd->scsi_done = qc->scsidone;
qc->scsidone = ata_delayed_done;
}
- scmd->result = SAM_STAT_GOOD;
- return 1;
+ goto skip;
}
/* Issue ATA STANDBY IMMEDIATE command */
return 0;
-invalid_fld:
+ invalid_fld:
ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x0);
/* "Invalid field in cbd" */
return 1;
+ skip:
+ scmd->result = SAM_STAT_GOOD;
+ return 1;
}
/**
* ata_scsi_rbuf_get - Map response buffer.
+ * @cmd: SCSI command containing buffer to be mapped.
* @flags: unsigned long variable to store irq enable status
* @copy_in: copy in from user buffer
*
const u8 pages[] = {
0x00, /* page 0x00, this page */
0x80, /* page 0x80, unit serial no page */
- 0x83 /* page 0x83, device ident page */
+ 0x83, /* page 0x83, device ident page */
+ 0x89, /* page 0x89, ata info page */
+ 0xb1, /* page 0xb1, block device characteristics page */
};
rbuf[3] = sizeof(pages); /* number of supported VPD pages */
return 0;
}
+static unsigned int ata_scsiop_inq_b1(struct ata_scsi_args *args, u8 *rbuf)
+{
+ rbuf[1] = 0xb1;
+ rbuf[3] = 0x3c;
+ if (ata_id_major_version(args->id) > 7) {
+ rbuf[4] = args->id[217] >> 8;
+ rbuf[5] = args->id[217];
+ rbuf[7] = args->id[168] & 0xf;
+ }
+
+ return 0;
+}
+
/**
* ata_scsiop_noop - Command handler that simply returns success.
* @args: device IDENTIFY data / SCSI command of interest.
/**
* ata_msense_rw_recovery - Simulate MODE SENSE r/w error recovery page
- * @bufp: output buffer
+ * @buf: output buffer
*
* Generate a generic MODE SENSE r/w error recovery page.
*
{
struct scsi_cmnd *scmd = qc->scsicmd;
struct ata_device *dev = qc->dev;
- int using_pio = (dev->flags & ATA_DFLAG_PIO);
int nodata = (scmd->sc_data_direction == DMA_NONE);
+ int using_pio = !nodata && (dev->flags & ATA_DFLAG_PIO);
unsigned int nbytes;
memset(qc->cdb, 0, dev->cdb_len);
ata_qc_set_pc_nbytes(qc);
/* check whether ATAPI DMA is safe */
- if (!using_pio && ata_check_atapi_dma(qc))
+ if (!nodata && !using_pio && atapi_check_dma(qc))
using_pio = 1;
/* Some controller variants snoop this value for Packet
qc->tf.lbam = (nbytes & 0xFF);
qc->tf.lbah = (nbytes >> 8);
- if (using_pio || nodata) {
- /* no data, or PIO data xfer */
- if (nodata)
- qc->tf.protocol = ATAPI_PROT_NODATA;
- else
- qc->tf.protocol = ATAPI_PROT_PIO;
- } else {
+ if (nodata)
+ qc->tf.protocol = ATAPI_PROT_NODATA;
+ else if (using_pio)
+ qc->tf.protocol = ATAPI_PROT_PIO;
+ else {
/* DMA data xfer */
qc->tf.protocol = ATAPI_PROT_DMA;
qc->tf.feature |= ATAPI_PKT_DMA;
}
/**
- * ata_scsi_dev_enabled - determine if device is enabled
- * @dev: ATA device
- *
- * Determine if commands should be sent to the specified device.
- *
- * LOCKING:
- * spin_lock_irqsave(host lock)
- *
- * RETURNS:
- * 0 if commands are not allowed / 1 if commands are allowed
- */
-
-static int ata_scsi_dev_enabled(struct ata_device *dev)
-{
- if (unlikely(!ata_dev_enabled(dev)))
- return 0;
-
- if (!atapi_enabled || (dev->link->ap->flags & ATA_FLAG_NO_ATAPI)) {
- if (unlikely(dev->class == ATA_DEV_ATAPI)) {
- ata_dev_printk(dev, KERN_WARNING,
- "WARNING: ATAPI is %s, device ignored.\n",
- atapi_enabled ? "not supported with this driver" : "disabled");
- return 0;
- }
- }
-
- return 1;
-}
-
-/**
* ata_scsi_find_dev - lookup ata_device from scsi_cmnd
* @ap: ATA port to which the device is attached
* @scsidev: SCSI device from which we derive the ATA device
{
struct ata_device *dev = __ata_scsi_find_dev(ap, scsidev);
- if (unlikely(!dev || !ata_scsi_dev_enabled(dev)))
+ if (unlikely(!dev || !ata_dev_enabled(dev)))
return NULL;
return dev;
case 0x89:
ata_scsi_rbuf_fill(&args, ata_scsiop_inq_89);
break;
+ case 0xb1:
+ ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b1);
+ break;
default:
ata_scsi_invalid_field(cmd, done);
break;
return;
repeat:
- ata_port_for_each_link(link, ap) {
- ata_link_for_each_dev(dev, link) {
+ ata_for_each_link(link, ap, EDGE) {
+ ata_for_each_dev(dev, link, ENABLED) {
struct scsi_device *sdev;
int channel = 0, id = 0;
- if (!ata_dev_enabled(dev) || dev->sdev)
+ if (dev->sdev)
continue;
if (ata_is_host_link(link))
* failure occurred, scan would have failed silently. Check
* whether all devices are attached.
*/
- ata_port_for_each_link(link, ap) {
- ata_link_for_each_dev(dev, link) {
- if (ata_dev_enabled(dev) && !dev->sdev)
+ ata_for_each_link(link, ap, EDGE) {
+ ata_for_each_dev(dev, link, ENABLED) {
+ if (!dev->sdev)
goto exit_loop;
}
}
if (sdev) {
ata_dev_printk(dev, KERN_INFO, "detaching (SCSI %s)\n",
- sdev->sdev_gendev.bus_id);
+ dev_name(&sdev->sdev_gendev));
scsi_remove_device(sdev);
scsi_device_put(sdev);
struct ata_port *ap = link->ap;
struct ata_device *dev;
- ata_link_for_each_dev(dev, link) {
+ ata_for_each_dev(dev, link, ALL) {
unsigned long flags;
if (!(dev->flags & ATA_DFLAG_DETACHED))
if (devno == SCAN_WILD_CARD) {
struct ata_link *link;
- ata_port_for_each_link(link, ap) {
+ ata_for_each_link(link, ap, EDGE) {
struct ata_eh_info *ehi = &link->eh_info;
ehi->probe_mask |= ATA_ALL_DEVICES;
ehi->action |= ATA_EH_RESET;
spin_lock_irqsave(ap->lock, flags);
- ata_port_for_each_link(link, ap) {
- ata_link_for_each_dev(dev, link) {
+ ata_for_each_link(link, ap, EDGE) {
+ ata_for_each_dev(dev, link, ENABLED) {
struct scsi_device *sdev = dev->sdev;
- if (!ata_dev_enabled(dev) || !sdev)
+ if (!sdev)
continue;
if (scsi_device_get(sdev))
continue;
ata_scsi_dump_cdb(ap, cmd);
- if (likely(ata_scsi_dev_enabled(ap->link.device)))
+ if (likely(ata_dev_enabled(ap->link.device)))
rc = __ata_scsi_queuecmd(cmd, done, ap->link.device);
else {
cmd->result = (DID_BAD_TARGET << 16);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff