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path: root/drivers/scsi/scsi_sysfs.c
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Diffstat (limited to 'drivers/scsi/scsi_sysfs.c')
-rw-r--r--drivers/scsi/scsi_sysfs.c244
1 files changed, 120 insertions, 124 deletions
diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
index f1e0c131b77c..99eb0a30df61 100644
--- a/drivers/scsi/scsi_sysfs.c
+++ b/drivers/scsi/scsi_sysfs.c
@@ -27,7 +27,7 @@
#include "scsi_priv.h"
#include "scsi_logging.h"
-static struct device_type scsi_dev_type;
+static const struct device_type scsi_dev_type;
static const struct {
enum scsi_device_state value;
@@ -265,7 +265,7 @@ show_shost_supported_mode(struct device *dev, struct device_attribute *attr,
return show_shost_mode(supported_mode, buf);
}
-static DEVICE_ATTR(supported_mode, S_IRUGO | S_IWUSR, show_shost_supported_mode, NULL);
+static DEVICE_ATTR(supported_mode, S_IRUGO, show_shost_supported_mode, NULL);
static ssize_t
show_shost_active_mode(struct device *dev,
@@ -279,7 +279,7 @@ show_shost_active_mode(struct device *dev,
return show_shost_mode(shost->active_mode, buf);
}
-static DEVICE_ATTR(active_mode, S_IRUGO | S_IWUSR, show_shost_active_mode, NULL);
+static DEVICE_ATTR(active_mode, S_IRUGO, show_shost_active_mode, NULL);
static int check_reset_type(const char *str)
{
@@ -296,7 +296,7 @@ store_host_reset(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct Scsi_Host *shost = class_to_shost(dev);
- struct scsi_host_template *sht = shost->hostt;
+ const struct scsi_host_template *sht = shost->hostt;
int ret = -EINVAL;
int type;
@@ -441,19 +441,18 @@ static void scsi_device_cls_release(struct device *class_dev)
put_device(&sdev->sdev_gendev);
}
-static void scsi_device_dev_release_usercontext(struct work_struct *work)
+static void scsi_device_dev_release(struct device *dev)
{
- struct scsi_device *sdev;
+ struct scsi_device *sdev = to_scsi_device(dev);
struct device *parent;
struct list_head *this, *tmp;
struct scsi_vpd *vpd_pg80 = NULL, *vpd_pg83 = NULL;
struct scsi_vpd *vpd_pg0 = NULL, *vpd_pg89 = NULL;
+ struct scsi_vpd *vpd_pgb0 = NULL, *vpd_pgb1 = NULL, *vpd_pgb2 = NULL;
+ struct scsi_vpd *vpd_pgb7 = NULL;
unsigned long flags;
- struct module *mod;
- sdev = container_of(work, struct scsi_device, ew.work);
-
- mod = sdev->host->hostt->module;
+ might_sleep();
scsi_dh_release_device(sdev);
@@ -490,6 +489,14 @@ static void scsi_device_dev_release_usercontext(struct work_struct *work)
lockdep_is_held(&sdev->inquiry_mutex));
vpd_pg89 = rcu_replace_pointer(sdev->vpd_pg89, vpd_pg89,
lockdep_is_held(&sdev->inquiry_mutex));
+ vpd_pgb0 = rcu_replace_pointer(sdev->vpd_pgb0, vpd_pgb0,
+ lockdep_is_held(&sdev->inquiry_mutex));
+ vpd_pgb1 = rcu_replace_pointer(sdev->vpd_pgb1, vpd_pgb1,
+ lockdep_is_held(&sdev->inquiry_mutex));
+ vpd_pgb2 = rcu_replace_pointer(sdev->vpd_pgb2, vpd_pgb2,
+ lockdep_is_held(&sdev->inquiry_mutex));
+ vpd_pgb7 = rcu_replace_pointer(sdev->vpd_pgb7, vpd_pgb7,
+ lockdep_is_held(&sdev->inquiry_mutex));
mutex_unlock(&sdev->inquiry_mutex);
if (vpd_pg0)
@@ -500,24 +507,19 @@ static void scsi_device_dev_release_usercontext(struct work_struct *work)
kfree_rcu(vpd_pg80, rcu);
if (vpd_pg89)
kfree_rcu(vpd_pg89, rcu);
+ if (vpd_pgb0)
+ kfree_rcu(vpd_pgb0, rcu);
+ if (vpd_pgb1)
+ kfree_rcu(vpd_pgb1, rcu);
+ if (vpd_pgb2)
+ kfree_rcu(vpd_pgb2, rcu);
+ if (vpd_pgb7)
+ kfree_rcu(vpd_pgb7, rcu);
kfree(sdev->inquiry);
kfree(sdev);
if (parent)
put_device(parent);
- module_put(mod);
-}
-
-static void scsi_device_dev_release(struct device *dev)
-{
- struct scsi_device *sdp = to_scsi_device(dev);
-
- /* Set module pointer as NULL in case of module unloading */
- if (!try_module_get(sdp->host->hostt->module))
- sdp->host->hostt->module = NULL;
-
- execute_in_process_context(scsi_device_dev_release_usercontext,
- &sdp->ew);
}
static struct class sdev_class = {
@@ -526,7 +528,7 @@ static struct class sdev_class = {
};
/* all probing is done in the individual ->probe routines */
-static int scsi_bus_match(struct device *dev, struct device_driver *gendrv)
+static int scsi_bus_match(struct device *dev, const struct device_driver *gendrv)
{
struct scsi_device *sdp;
@@ -539,9 +541,9 @@ static int scsi_bus_match(struct device *dev, struct device_driver *gendrv)
return (sdp->inq_periph_qual == SCSI_INQ_PQ_CON)? 1: 0;
}
-static int scsi_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
+static int scsi_bus_uevent(const struct device *dev, struct kobj_uevent_env *env)
{
- struct scsi_device *sdev;
+ const struct scsi_device *sdev;
if (dev->type != &scsi_dev_type)
return 0;
@@ -552,7 +554,7 @@ static int scsi_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
return 0;
}
-struct bus_type scsi_bus_type = {
+const struct bus_type scsi_bus_type = {
.name = "scsi",
.match = scsi_bus_match,
.uevent = scsi_bus_uevent,
@@ -560,7 +562,6 @@ struct bus_type scsi_bus_type = {
.pm = &scsi_bus_pm_ops,
#endif
};
-EXPORT_SYMBOL_GPL(scsi_bus_type);
int scsi_sysfs_register(void)
{
@@ -604,68 +605,6 @@ sdev_show_##field (struct device *dev, struct device_attribute *attr, \
sdev_show_function(field, format_string) \
static DEVICE_ATTR(field, S_IRUGO, sdev_show_##field, NULL);
-
-/*
- * sdev_rw_attr: create a function and attribute variable for a
- * read/write field.
- */
-#define sdev_rw_attr(field, format_string) \
- sdev_show_function(field, format_string) \
- \
-static ssize_t \
-sdev_store_##field (struct device *dev, struct device_attribute *attr, \
- const char *buf, size_t count) \
-{ \
- struct scsi_device *sdev; \
- sdev = to_scsi_device(dev); \
- sscanf (buf, format_string, &sdev->field); \
- return count; \
-} \
-static DEVICE_ATTR(field, S_IRUGO | S_IWUSR, sdev_show_##field, sdev_store_##field);
-
-/* Currently we don't export bit fields, but we might in future,
- * so leave this code in */
-#if 0
-/*
- * sdev_rd_attr: create a function and attribute variable for a
- * read/write bit field.
- */
-#define sdev_rw_attr_bit(field) \
- sdev_show_function(field, "%d\n") \
- \
-static ssize_t \
-sdev_store_##field (struct device *dev, struct device_attribute *attr, \
- const char *buf, size_t count) \
-{ \
- int ret; \
- struct scsi_device *sdev; \
- ret = scsi_sdev_check_buf_bit(buf); \
- if (ret >= 0) { \
- sdev = to_scsi_device(dev); \
- sdev->field = ret; \
- ret = count; \
- } \
- return ret; \
-} \
-static DEVICE_ATTR(field, S_IRUGO | S_IWUSR, sdev_show_##field, sdev_store_##field);
-
-/*
- * scsi_sdev_check_buf_bit: return 0 if buf is "0", return 1 if buf is "1",
- * else return -EINVAL.
- */
-static int scsi_sdev_check_buf_bit(const char *buf)
-{
- if ((buf[1] == '\0') || ((buf[1] == '\n') && (buf[2] == '\0'))) {
- if (buf[0] == '1')
- return 1;
- else if (buf[0] == '0')
- return 0;
- else
- return -EINVAL;
- } else
- return -EINVAL;
-}
-#endif
/*
* Create the actual show/store functions and data structures.
*/
@@ -674,6 +613,7 @@ sdev_rd_attr (scsi_level, "%d\n");
sdev_rd_attr (vendor, "%.8s\n");
sdev_rd_attr (model, "%.16s\n");
sdev_rd_attr (rev, "%.4s\n");
+sdev_rd_attr (cdl_supported, "%d\n");
static ssize_t
sdev_show_device_busy(struct device *dev, struct device_attribute *attr,
@@ -708,10 +648,14 @@ static ssize_t
sdev_store_timeout (struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- struct scsi_device *sdev;
- int timeout;
- sdev = to_scsi_device(dev);
- sscanf (buf, "%d\n", &timeout);
+ struct scsi_device *sdev = to_scsi_device(dev);
+ int ret, timeout;
+
+ ret = kstrtoint(buf, 0, &timeout);
+ if (ret)
+ return ret;
+ if (timeout <= 0)
+ return -EINVAL;
blk_queue_rq_timeout(sdev->request_queue, timeout * HZ);
return count;
}
@@ -750,7 +694,7 @@ static ssize_t
store_rescan_field (struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- scsi_rescan_device(dev);
+ scsi_rescan_device(to_scsi_device(dev));
return count;
}
static DEVICE_ATTR(rescan, S_IWUSR, NULL, store_rescan_field);
@@ -816,6 +760,14 @@ store_state_field(struct device *dev, struct device_attribute *attr,
}
mutex_lock(&sdev->state_mutex);
+ switch (sdev->sdev_state) {
+ case SDEV_RUNNING:
+ case SDEV_OFFLINE:
+ break;
+ default:
+ mutex_unlock(&sdev->state_mutex);
+ return -EINVAL;
+ }
if (sdev->sdev_state == SDEV_RUNNING && state == SDEV_RUNNING) {
ret = 0;
} else {
@@ -835,7 +787,7 @@ store_state_field(struct device *dev, struct device_attribute *attr,
* waiting for pending I/O to finish.
*/
blk_mq_run_hw_queues(sdev->request_queue, true);
- scsi_rescan_device(dev);
+ scsi_rescan_device(sdev);
}
return ret == 0 ? count : -EINVAL;
@@ -876,7 +828,7 @@ store_queue_type_field(struct device *dev, struct device_attribute *attr,
if (!sdev->tagged_supported)
return -EINVAL;
-
+
sdev_printk(KERN_INFO, sdev,
"ignoring write to deprecated queue_type attribute");
return count;
@@ -888,7 +840,7 @@ static DEVICE_ATTR(queue_type, S_IRUGO | S_IWUSR, show_queue_type_field,
#define sdev_vpd_pg_attr(_page) \
static ssize_t \
show_vpd_##_page(struct file *filp, struct kobject *kobj, \
- struct bin_attribute *bin_attr, \
+ const struct bin_attribute *bin_attr, \
char *buf, loff_t off, size_t count) \
{ \
struct device *dev = kobj_to_dev(kobj); \
@@ -904,7 +856,7 @@ show_vpd_##_page(struct file *filp, struct kobject *kobj, \
rcu_read_unlock(); \
return ret; \
} \
-static struct bin_attribute dev_attr_vpd_##_page = { \
+static const struct bin_attribute dev_attr_vpd_##_page = { \
.attr = {.name = __stringify(vpd_##_page), .mode = S_IRUGO }, \
.size = 0, \
.read = show_vpd_##_page, \
@@ -913,10 +865,14 @@ static struct bin_attribute dev_attr_vpd_##_page = { \
sdev_vpd_pg_attr(pg83);
sdev_vpd_pg_attr(pg80);
sdev_vpd_pg_attr(pg89);
+sdev_vpd_pg_attr(pgb0);
+sdev_vpd_pg_attr(pgb1);
+sdev_vpd_pg_attr(pgb2);
+sdev_vpd_pg_attr(pgb7);
sdev_vpd_pg_attr(pg0);
static ssize_t show_inquiry(struct file *filep, struct kobject *kobj,
- struct bin_attribute *bin_attr,
+ const struct bin_attribute *bin_attr,
char *buf, loff_t off, size_t count)
{
struct device *dev = kobj_to_dev(kobj);
@@ -929,7 +885,7 @@ static ssize_t show_inquiry(struct file *filep, struct kobject *kobj,
sdev->inquiry_len);
}
-static struct bin_attribute dev_attr_inquiry = {
+static const struct bin_attribute dev_attr_inquiry = {
.attr = {
.name = "inquiry",
.mode = S_IRUGO,
@@ -961,6 +917,7 @@ static DEVICE_ATTR(field, S_IRUGO, show_iostat_##field, NULL)
show_sdev_iostat(iorequest_cnt);
show_sdev_iostat(iodone_cnt);
show_sdev_iostat(ioerr_cnt);
+show_sdev_iostat(iotmo_cnt);
static ssize_t
sdev_show_modalias(struct device *dev, struct device_attribute *attr, char *buf)
@@ -1017,7 +974,7 @@ sdev_store_queue_depth(struct device *dev, struct device_attribute *attr,
{
int depth, retval;
struct scsi_device *sdev = to_scsi_device(dev);
- struct scsi_host_template *sht = sdev->host->hostt;
+ const struct scsi_host_template *sht = sdev->host->hostt;
if (!sht->change_queue_depth)
return -EINVAL;
@@ -1213,6 +1170,33 @@ static DEVICE_ATTR(queue_ramp_up_period, S_IRUGO | S_IWUSR,
sdev_show_queue_ramp_up_period,
sdev_store_queue_ramp_up_period);
+static ssize_t sdev_show_cdl_enable(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct scsi_device *sdev = to_scsi_device(dev);
+
+ return sysfs_emit(buf, "%d\n", (int)sdev->cdl_enable);
+}
+
+static ssize_t sdev_store_cdl_enable(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int ret;
+ bool v;
+
+ if (kstrtobool(buf, &v))
+ return -EINVAL;
+
+ ret = scsi_cdl_enable(to_scsi_device(dev), v);
+ if (ret)
+ return ret;
+
+ return count;
+}
+static DEVICE_ATTR(cdl_enable, S_IRUGO | S_IWUSR,
+ sdev_show_cdl_enable, sdev_store_cdl_enable);
+
static umode_t scsi_sdev_attr_is_visible(struct kobject *kobj,
struct attribute *attr, int i)
{
@@ -1228,19 +1212,11 @@ static umode_t scsi_sdev_attr_is_visible(struct kobject *kobj,
!sdev->host->hostt->change_queue_depth)
return 0;
-#ifdef CONFIG_SCSI_DH
- if (attr == &dev_attr_access_state.attr &&
- !sdev->handler)
- return 0;
- if (attr == &dev_attr_preferred_path.attr &&
- !sdev->handler)
- return 0;
-#endif
return attr->mode;
}
static umode_t scsi_sdev_bin_attr_is_visible(struct kobject *kobj,
- struct bin_attribute *attr, int i)
+ const struct bin_attribute *attr, int i)
{
struct device *dev = kobj_to_dev(kobj);
struct scsi_device *sdev = to_scsi_device(dev);
@@ -1258,6 +1234,18 @@ static umode_t scsi_sdev_bin_attr_is_visible(struct kobject *kobj,
if (attr == &dev_attr_vpd_pg89 && !sdev->vpd_pg89)
return 0;
+ if (attr == &dev_attr_vpd_pgb0 && !sdev->vpd_pgb0)
+ return 0;
+
+ if (attr == &dev_attr_vpd_pgb1 && !sdev->vpd_pgb1)
+ return 0;
+
+ if (attr == &dev_attr_vpd_pgb2 && !sdev->vpd_pgb2)
+ return 0;
+
+ if (attr == &dev_attr_vpd_pgb7 && !sdev->vpd_pgb7)
+ return 0;
+
return S_IRUGO;
}
@@ -1279,6 +1267,7 @@ static struct attribute *scsi_sdev_attrs[] = {
&dev_attr_iorequest_cnt.attr,
&dev_attr_iodone_cnt.attr,
&dev_attr_ioerr_cnt.attr,
+ &dev_attr_iotmo_cnt.attr,
&dev_attr_modalias.attr,
&dev_attr_queue_depth.attr,
&dev_attr_queue_type.attr,
@@ -1290,6 +1279,8 @@ static struct attribute *scsi_sdev_attrs[] = {
&dev_attr_preferred_path.attr,
#endif
&dev_attr_queue_ramp_up_period.attr,
+ &dev_attr_cdl_supported.attr,
+ &dev_attr_cdl_enable.attr,
REF_EVT(media_change),
REF_EVT(inquiry_change_reported),
REF_EVT(capacity_change_reported),
@@ -1299,17 +1290,21 @@ static struct attribute *scsi_sdev_attrs[] = {
NULL
};
-static struct bin_attribute *scsi_sdev_bin_attrs[] = {
+static const struct bin_attribute *const scsi_sdev_bin_attrs[] = {
&dev_attr_vpd_pg0,
&dev_attr_vpd_pg83,
&dev_attr_vpd_pg80,
&dev_attr_vpd_pg89,
+ &dev_attr_vpd_pgb0,
+ &dev_attr_vpd_pgb1,
+ &dev_attr_vpd_pgb2,
+ &dev_attr_vpd_pgb7,
&dev_attr_inquiry,
NULL
};
static struct attribute_group scsi_sdev_attr_group = {
.attrs = scsi_sdev_attrs,
- .bin_attrs = scsi_sdev_bin_attrs,
+ .bin_attrs = scsi_sdev_bin_attrs,
.is_visible = scsi_sdev_attr_is_visible,
.is_bin_visible = scsi_sdev_bin_attr_is_visible,
};
@@ -1353,6 +1348,9 @@ int scsi_sysfs_add_sdev(struct scsi_device *sdev)
int error;
struct scsi_target *starget = sdev->sdev_target;
+ if (WARN_ON_ONCE(scsi_device_is_pseudo_dev(sdev)))
+ return -EINVAL;
+
error = scsi_target_add(starget);
if (error)
return error;
@@ -1392,10 +1390,6 @@ int scsi_sysfs_add_sdev(struct scsi_device *sdev)
if (IS_ENABLED(CONFIG_BLK_DEV_BSG)) {
sdev->bsg_dev = scsi_bsg_register_queue(sdev);
if (IS_ERR(sdev->bsg_dev)) {
- /*
- * We're treating error on bsg register as non-fatal, so
- * pretend nothing went wrong.
- */
error = PTR_ERR(sdev->bsg_dev);
sdev_printk(KERN_INFO, sdev,
"Failed to register bsg queue, errno=%d\n",
@@ -1460,11 +1454,12 @@ void __scsi_remove_device(struct scsi_device *sdev)
scsi_device_set_state(sdev, SDEV_DEL);
mutex_unlock(&sdev->state_mutex);
- blk_cleanup_queue(sdev->request_queue);
+ blk_mq_destroy_queue(sdev->request_queue);
+ kref_put(&sdev->host->tagset_refcnt, scsi_mq_free_tags);
cancel_work_sync(&sdev->requeue_work);
- if (sdev->host->hostt->slave_destroy)
- sdev->host->hostt->slave_destroy(sdev);
+ if (!scsi_device_is_pseudo_dev(sdev) && sdev->host->hostt->sdev_destroy)
+ sdev->host->hostt->sdev_destroy(sdev);
transport_destroy_device(dev);
/*
@@ -1559,13 +1554,14 @@ restart:
}
EXPORT_SYMBOL(scsi_remove_target);
-int scsi_register_driver(struct device_driver *drv)
+int __scsi_register_driver(struct device_driver *drv, struct module *owner)
{
drv->bus = &scsi_bus_type;
+ drv->owner = owner;
return driver_register(drv);
}
-EXPORT_SYMBOL(scsi_register_driver);
+EXPORT_SYMBOL(__scsi_register_driver);
int scsi_register_interface(struct class_interface *intf)
{
@@ -1586,7 +1582,7 @@ int scsi_sysfs_add_host(struct Scsi_Host *shost)
return 0;
}
-static struct device_type scsi_dev_type = {
+static const struct device_type scsi_dev_type = {
.name = "scsi_device",
.release = scsi_device_dev_release,
.groups = scsi_sdev_attr_groups,
@@ -1596,7 +1592,7 @@ void scsi_sysfs_device_initialize(struct scsi_device *sdev)
{
unsigned long flags;
struct Scsi_Host *shost = sdev->host;
- struct scsi_host_template *hostt = shost->hostt;
+ const struct scsi_host_template *hostt = shost->hostt;
struct scsi_target *starget = sdev->sdev_target;
device_initialize(&sdev->sdev_gendev);
generated by cgit (git 2.34.1) at 2025-12-25 21:13:58 +0000