*/
#include <linux/module.h>
+#include <linux/slab.h>
#include <linux/init.h>
#include <linux/blkdev.h>
#include <linux/device.h>
+#include <linux/pm_runtime.h>
#include <scsi/scsi.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_tcq.h>
#include <scsi/scsi_transport.h>
+#include <scsi/scsi_driver.h>
#include "scsi_priv.h"
#include "scsi_logging.h"
+static struct device_type scsi_dev_type;
+
static const struct {
enum scsi_device_state value;
char *name;
{ SDEV_QUIESCE, "quiesce" },
{ SDEV_OFFLINE, "offline" },
{ SDEV_BLOCK, "blocked" },
+ { SDEV_CREATED_BLOCK, "created-blocked" },
};
const char *scsi_device_state_name(enum scsi_device_state state)
*/
#define shost_show_function(name, field, format_string) \
static ssize_t \
-show_##name (struct class_device *class_dev, char *buf) \
+show_##name (struct device *dev, struct device_attribute *attr, \
+ char *buf) \
{ \
- struct Scsi_Host *shost = class_to_shost(class_dev); \
+ struct Scsi_Host *shost = class_to_shost(dev); \
return snprintf (buf, 20, format_string, shost->field); \
}
*/
#define shost_rd_attr2(name, field, format_string) \
shost_show_function(name, field, format_string) \
-static CLASS_DEVICE_ATTR(name, S_IRUGO, show_##name, NULL);
+static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL);
#define shost_rd_attr(field, format_string) \
shost_rd_attr2(field, field, format_string)
* Create the actual show/store functions and data structures.
*/
-static ssize_t store_scan(struct class_device *class_dev, const char *buf,
- size_t count)
+static ssize_t
+store_scan(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
{
- struct Scsi_Host *shost = class_to_shost(class_dev);
+ struct Scsi_Host *shost = class_to_shost(dev);
int res;
res = scsi_scan(shost, buf);
res = count;
return res;
};
-static CLASS_DEVICE_ATTR(scan, S_IWUSR, NULL, store_scan);
+static DEVICE_ATTR(scan, S_IWUSR, NULL, store_scan);
static ssize_t
-store_shost_state(struct class_device *class_dev, const char *buf, size_t count)
+store_shost_state(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
{
int i;
- struct Scsi_Host *shost = class_to_shost(class_dev);
+ struct Scsi_Host *shost = class_to_shost(dev);
enum scsi_host_state state = 0;
for (i = 0; i < ARRAY_SIZE(shost_states); i++) {
}
static ssize_t
-show_shost_state(struct class_device *class_dev, char *buf)
+show_shost_state(struct device *dev, struct device_attribute *attr, char *buf)
{
- struct Scsi_Host *shost = class_to_shost(class_dev);
+ struct Scsi_Host *shost = class_to_shost(dev);
const char *name = scsi_host_state_name(shost->shost_state);
if (!name)
return snprintf(buf, 20, "%s\n", name);
}
-static CLASS_DEVICE_ATTR(state, S_IRUGO | S_IWUSR, show_shost_state, store_shost_state);
+/* DEVICE_ATTR(state) clashes with dev_attr_state for sdev */
+struct device_attribute dev_attr_hstate =
+ __ATTR(state, S_IRUGO | S_IWUSR, show_shost_state, store_shost_state);
+
+static ssize_t
+show_shost_mode(unsigned int mode, char *buf)
+{
+ ssize_t len = 0;
+
+ if (mode & MODE_INITIATOR)
+ len = sprintf(buf, "%s", "Initiator");
+
+ if (mode & MODE_TARGET)
+ len += sprintf(buf + len, "%s%s", len ? ", " : "", "Target");
+
+ len += sprintf(buf + len, "\n");
+
+ return len;
+}
+
+static ssize_t
+show_shost_supported_mode(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(dev);
+ unsigned int supported_mode = shost->hostt->supported_mode;
+
+ if (supported_mode == MODE_UNKNOWN)
+ /* by default this should be initiator */
+ supported_mode = MODE_INITIATOR;
+
+ return show_shost_mode(supported_mode, buf);
+}
+
+static DEVICE_ATTR(supported_mode, S_IRUGO | S_IWUSR, show_shost_supported_mode, NULL);
+
+static ssize_t
+show_shost_active_mode(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(dev);
+
+ if (shost->active_mode == MODE_UNKNOWN)
+ return snprintf(buf, 20, "unknown\n");
+ else
+ return show_shost_mode(shost->active_mode, buf);
+}
+
+static DEVICE_ATTR(active_mode, S_IRUGO | S_IWUSR, show_shost_active_mode, NULL);
shost_rd_attr(unique_id, "%u\n");
shost_rd_attr(host_busy, "%hu\n");
shost_rd_attr(cmd_per_lun, "%hd\n");
shost_rd_attr(can_queue, "%hd\n");
shost_rd_attr(sg_tablesize, "%hu\n");
+shost_rd_attr(sg_prot_tablesize, "%hu\n");
shost_rd_attr(unchecked_isa_dma, "%d\n");
+shost_rd_attr(prot_capabilities, "%u\n");
+shost_rd_attr(prot_guard_type, "%hd\n");
shost_rd_attr2(proc_name, hostt->proc_name, "%s\n");
-static struct class_device_attribute *scsi_sysfs_shost_attrs[] = {
- &class_device_attr_unique_id,
- &class_device_attr_host_busy,
- &class_device_attr_cmd_per_lun,
- &class_device_attr_can_queue,
- &class_device_attr_sg_tablesize,
- &class_device_attr_unchecked_isa_dma,
- &class_device_attr_proc_name,
- &class_device_attr_scan,
- &class_device_attr_state,
+static struct attribute *scsi_sysfs_shost_attrs[] = {
+ &dev_attr_unique_id.attr,
+ &dev_attr_host_busy.attr,
+ &dev_attr_cmd_per_lun.attr,
+ &dev_attr_can_queue.attr,
+ &dev_attr_sg_tablesize.attr,
+ &dev_attr_sg_prot_tablesize.attr,
+ &dev_attr_unchecked_isa_dma.attr,
+ &dev_attr_proc_name.attr,
+ &dev_attr_scan.attr,
+ &dev_attr_hstate.attr,
+ &dev_attr_supported_mode.attr,
+ &dev_attr_active_mode.attr,
+ &dev_attr_prot_capabilities.attr,
+ &dev_attr_prot_guard_type.attr,
NULL
};
-static void scsi_device_cls_release(struct class_device *class_dev)
+struct attribute_group scsi_shost_attr_group = {
+ .attrs = scsi_sysfs_shost_attrs,
+};
+
+const struct attribute_group *scsi_sysfs_shost_attr_groups[] = {
+ &scsi_shost_attr_group,
+ NULL
+};
+
+static void scsi_device_cls_release(struct device *class_dev)
{
struct scsi_device *sdev;
struct scsi_device *sdev;
struct device *parent;
struct scsi_target *starget;
+ struct list_head *this, *tmp;
unsigned long flags;
sdev = container_of(work, struct scsi_device, ew.work);
list_del(&sdev->starved_entry);
spin_unlock_irqrestore(sdev->host->host_lock, flags);
- if (sdev->request_queue) {
- sdev->request_queue->queuedata = NULL;
- /* user context needed to free queue */
- scsi_free_queue(sdev->request_queue);
- /* temporary expedient, try to catch use of queue lock
- * after free of sdev */
- sdev->request_queue = NULL;
+ cancel_work_sync(&sdev->event_work);
+
+ list_for_each_safe(this, tmp, &sdev->event_list) {
+ struct scsi_event *evt;
+
+ evt = list_entry(this, struct scsi_event, node);
+ list_del(&evt->node);
+ kfree(evt);
}
+ blk_put_queue(sdev->request_queue);
+ /* NULL queue means the device can't be used */
+ sdev->request_queue = NULL;
+
scsi_target_reap(scsi_target(sdev));
kfree(sdev->inquiry);
static struct class sdev_class = {
.name = "scsi_device",
- .release = scsi_device_cls_release,
+ .dev_release = scsi_device_cls_release,
};
/* all probing is done in the individual ->probe routines */
static int scsi_bus_match(struct device *dev, struct device_driver *gendrv)
{
- struct scsi_device *sdp = to_scsi_device(dev);
+ struct scsi_device *sdp;
+
+ if (dev->type != &scsi_dev_type)
+ return 0;
+
+ sdp = to_scsi_device(dev);
if (sdp->no_uld_attach)
return 0;
return (sdp->inq_periph_qual == SCSI_INQ_PQ_CON)? 1: 0;
}
-static int scsi_bus_uevent(struct device *dev, char **envp, int num_envp,
- char *buffer, int buffer_size)
+static int scsi_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
{
- struct scsi_device *sdev = to_scsi_device(dev);
- int i = 0;
- int length = 0;
-
- add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length,
- "MODALIAS=" SCSI_DEVICE_MODALIAS_FMT, sdev->type);
- envp[i] = NULL;
- return 0;
-}
-
-static int scsi_bus_suspend(struct device * dev, pm_message_t state)
-{
- struct device_driver *drv = dev->driver;
- struct scsi_device *sdev = to_scsi_device(dev);
- struct scsi_host_template *sht = sdev->host->hostt;
- int err;
-
- err = scsi_device_quiesce(sdev);
- if (err)
- return err;
+ struct scsi_device *sdev;
- /* call HLD suspend first */
- if (drv && drv->suspend) {
- err = drv->suspend(dev, state);
- if (err)
- return err;
- }
+ if (dev->type != &scsi_dev_type)
+ return 0;
- /* then, call host suspend */
- if (sht->suspend) {
- err = sht->suspend(sdev, state);
- if (err) {
- if (drv && drv->resume)
- drv->resume(dev);
- return err;
- }
- }
+ sdev = to_scsi_device(dev);
+ add_uevent_var(env, "MODALIAS=" SCSI_DEVICE_MODALIAS_FMT, sdev->type);
return 0;
}
-static int scsi_bus_resume(struct device * dev)
-{
- struct device_driver *drv = dev->driver;
- struct scsi_device *sdev = to_scsi_device(dev);
- struct scsi_host_template *sht = sdev->host->hostt;
- int err = 0, err2 = 0;
-
- /* call host resume first */
- if (sht->resume)
- err = sht->resume(sdev);
-
- /* then, call HLD resume */
- if (drv && drv->resume)
- err2 = drv->resume(dev);
-
- scsi_device_resume(sdev);
-
- /* favor LLD failure */
- return err ? err : err2;;
-}
-
struct bus_type scsi_bus_type = {
.name = "scsi",
.match = scsi_bus_match,
.uevent = scsi_bus_uevent,
- .suspend = scsi_bus_suspend,
- .resume = scsi_bus_resume,
+#ifdef CONFIG_PM
+ .pm = &scsi_bus_pm_ops,
+#endif
};
+EXPORT_SYMBOL_GPL(scsi_bus_type);
int scsi_sysfs_register(void)
{
*/
#define sdev_show_function(field, format_string) \
static ssize_t \
-sdev_show_##field (struct device *dev, struct device_attribute *attr, char *buf) \
+sdev_show_##field (struct device *dev, struct device_attribute *attr, \
+ char *buf) \
{ \
struct scsi_device *sdev; \
sdev = to_scsi_device(dev); \
/*
- * sdev_rd_attr: create a function and attribute variable for a
+ * 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) \
+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); \
- snscanf (buf, 20, format_string, &sdev->field); \
+ sscanf (buf, format_string, &sdev->field); \
return count; \
} \
static DEVICE_ATTR(field, S_IRUGO | S_IWUSR, sdev_show_##field, sdev_store_##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) \
+sdev_store_##field (struct device *dev, struct device_attribute *attr, \
+ const char *buf, size_t count) \
{ \
int ret; \
struct scsi_device *sdev; \
sdev_rd_attr (model, "%.16s\n");
sdev_rd_attr (rev, "%.4s\n");
+/*
+ * TODO: can we make these symlinks to the block layer ones?
+ */
static ssize_t
sdev_show_timeout (struct device *dev, struct device_attribute *attr, char *buf)
{
struct scsi_device *sdev;
sdev = to_scsi_device(dev);
- return snprintf (buf, 20, "%d\n", sdev->timeout / HZ);
+ return snprintf(buf, 20, "%d\n", sdev->request_queue->rq_timeout / HZ);
}
static ssize_t
-sdev_store_timeout (struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
+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);
- sdev->timeout = timeout * HZ;
+ blk_queue_rq_timeout(sdev->request_queue, timeout * HZ);
return count;
}
static DEVICE_ATTR(timeout, S_IRUGO | S_IWUSR, sdev_show_timeout, sdev_store_timeout);
static ssize_t
-store_rescan_field (struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
+store_rescan_field (struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
{
scsi_rescan_device(dev);
return count;
scsi_remove_device(to_scsi_device(dev));
}
-static ssize_t sdev_store_delete(struct device *dev, struct device_attribute *attr, const char *buf,
- size_t count)
+static ssize_t
+sdev_store_delete(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
{
int rc;
static DEVICE_ATTR(delete, S_IWUSR, NULL, sdev_store_delete);
static ssize_t
-store_state_field(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
+store_state_field(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
{
int i;
struct scsi_device *sdev = to_scsi_device(dev);
static DEVICE_ATTR(state, S_IRUGO | S_IWUSR, show_state_field, store_state_field);
static ssize_t
-show_queue_type_field(struct device *dev, struct device_attribute *attr, char *buf)
+show_queue_type_field(struct device *dev, struct device_attribute *attr,
+ char *buf)
{
struct scsi_device *sdev = to_scsi_device(dev);
const char *name = "none";
static DEVICE_ATTR(queue_type, S_IRUGO, show_queue_type_field, NULL);
static ssize_t
-show_iostat_counterbits(struct device *dev, struct device_attribute *attr, char *buf)
+show_iostat_counterbits(struct device *dev, struct device_attribute *attr, char *buf)
{
return snprintf(buf, 20, "%d\n", (int)sizeof(atomic_t) * 8);
}
#define show_sdev_iostat(field) \
static ssize_t \
-show_iostat_##field(struct device *dev, struct device_attribute *attr, char *buf) \
+show_iostat_##field(struct device *dev, struct device_attribute *attr, \
+ char *buf) \
{ \
struct scsi_device *sdev = to_scsi_device(dev); \
unsigned long long count = atomic_read(&sdev->field); \
}
static DEVICE_ATTR(modalias, S_IRUGO, sdev_show_modalias, NULL);
+#define DECLARE_EVT_SHOW(name, Cap_name) \
+static ssize_t \
+sdev_show_evt_##name(struct device *dev, struct device_attribute *attr, \
+ char *buf) \
+{ \
+ struct scsi_device *sdev = to_scsi_device(dev); \
+ int val = test_bit(SDEV_EVT_##Cap_name, sdev->supported_events);\
+ return snprintf(buf, 20, "%d\n", val); \
+}
+
+#define DECLARE_EVT_STORE(name, Cap_name) \
+static ssize_t \
+sdev_store_evt_##name(struct device *dev, struct device_attribute *attr,\
+ const char *buf, size_t count) \
+{ \
+ struct scsi_device *sdev = to_scsi_device(dev); \
+ int val = simple_strtoul(buf, NULL, 0); \
+ if (val == 0) \
+ clear_bit(SDEV_EVT_##Cap_name, sdev->supported_events); \
+ else if (val == 1) \
+ set_bit(SDEV_EVT_##Cap_name, sdev->supported_events); \
+ else \
+ return -EINVAL; \
+ return count; \
+}
+
+#define DECLARE_EVT(name, Cap_name) \
+ DECLARE_EVT_SHOW(name, Cap_name) \
+ DECLARE_EVT_STORE(name, Cap_name) \
+ static DEVICE_ATTR(evt_##name, S_IRUGO, sdev_show_evt_##name, \
+ sdev_store_evt_##name);
+#define REF_EVT(name) &dev_attr_evt_##name.attr
+
+DECLARE_EVT(media_change, MEDIA_CHANGE)
+
/* Default template for device attributes. May NOT be modified */
-static struct device_attribute *scsi_sysfs_sdev_attrs[] = {
- &dev_attr_device_blocked,
- &dev_attr_queue_depth,
- &dev_attr_queue_type,
- &dev_attr_type,
- &dev_attr_scsi_level,
- &dev_attr_vendor,
- &dev_attr_model,
- &dev_attr_rev,
- &dev_attr_rescan,
- &dev_attr_delete,
- &dev_attr_state,
- &dev_attr_timeout,
- &dev_attr_iocounterbits,
- &dev_attr_iorequest_cnt,
- &dev_attr_iodone_cnt,
- &dev_attr_ioerr_cnt,
- &dev_attr_modalias,
+static struct attribute *scsi_sdev_attrs[] = {
+ &dev_attr_device_blocked.attr,
+ &dev_attr_type.attr,
+ &dev_attr_scsi_level.attr,
+ &dev_attr_vendor.attr,
+ &dev_attr_model.attr,
+ &dev_attr_rev.attr,
+ &dev_attr_rescan.attr,
+ &dev_attr_delete.attr,
+ &dev_attr_state.attr,
+ &dev_attr_timeout.attr,
+ &dev_attr_iocounterbits.attr,
+ &dev_attr_iorequest_cnt.attr,
+ &dev_attr_iodone_cnt.attr,
+ &dev_attr_ioerr_cnt.attr,
+ &dev_attr_modalias.attr,
+ REF_EVT(media_change),
+ NULL
+};
+
+static struct attribute_group scsi_sdev_attr_group = {
+ .attrs = scsi_sdev_attrs,
+};
+
+static const struct attribute_group *scsi_sdev_attr_groups[] = {
+ &scsi_sdev_attr_group,
NULL
};
-static ssize_t sdev_store_queue_depth_rw(struct device *dev, struct device_attribute *attr, const char *buf,
- size_t count)
+static ssize_t
+sdev_store_queue_depth_rw(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
{
int depth, retval;
struct scsi_device *sdev = to_scsi_device(dev);
if (depth < 1)
return -EINVAL;
- retval = sht->change_queue_depth(sdev, depth);
+ retval = sht->change_queue_depth(sdev, depth,
+ SCSI_QDEPTH_DEFAULT);
if (retval < 0)
return retval;
+ sdev->max_queue_depth = sdev->queue_depth;
+
return count;
}
__ATTR(queue_depth, S_IRUGO | S_IWUSR, sdev_show_queue_depth,
sdev_store_queue_depth_rw);
-static ssize_t sdev_store_queue_type_rw(struct device *dev, struct device_attribute *attr, const char *buf,
- size_t count)
+static ssize_t
+sdev_show_queue_ramp_up_period(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct scsi_device *sdev;
+ sdev = to_scsi_device(dev);
+ return snprintf(buf, 20, "%u\n",
+ jiffies_to_msecs(sdev->queue_ramp_up_period));
+}
+
+static ssize_t
+sdev_store_queue_ramp_up_period(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct scsi_device *sdev = to_scsi_device(dev);
+ unsigned long period;
+
+ if (strict_strtoul(buf, 10, &period))
+ return -EINVAL;
+
+ sdev->queue_ramp_up_period = msecs_to_jiffies(period);
+ return period;
+}
+
+static struct device_attribute sdev_attr_queue_ramp_up_period =
+ __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_store_queue_type_rw(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
{
struct scsi_device *sdev = to_scsi_device(dev);
struct scsi_host_template *sht = sdev->host->hostt;
return count;
}
-static struct device_attribute sdev_attr_queue_type_rw =
- __ATTR(queue_type, S_IRUGO | S_IWUSR, show_queue_type_field,
- sdev_store_queue_type_rw);
-
-static struct device_attribute *attr_changed_internally(
- struct Scsi_Host *shost,
- struct device_attribute * attr)
+static int scsi_target_add(struct scsi_target *starget)
{
- if (!strcmp("queue_depth", attr->attr.name)
- && shost->hostt->change_queue_depth)
- return &sdev_attr_queue_depth_rw;
- else if (!strcmp("queue_type", attr->attr.name)
- && shost->hostt->change_queue_type)
- return &sdev_attr_queue_type_rw;
- return attr;
-}
-
-
-static struct device_attribute *attr_overridden(
- struct device_attribute **attrs,
- struct device_attribute *attr)
-{
- int i;
-
- if (!attrs)
- return NULL;
- for (i = 0; attrs[i]; i++)
- if (!strcmp(attrs[i]->attr.name, attr->attr.name))
- return attrs[i];
- return NULL;
-}
+ int error;
-static int attr_add(struct device *dev, struct device_attribute *attr)
-{
- struct device_attribute *base_attr;
+ if (starget->state != STARGET_CREATED)
+ return 0;
- /*
- * Spare the caller from having to copy things it's not interested in.
- */
- base_attr = attr_overridden(scsi_sysfs_sdev_attrs, attr);
- if (base_attr) {
- /* extend permissions */
- attr->attr.mode |= base_attr->attr.mode;
-
- /* override null show/store with default */
- if (!attr->show)
- attr->show = base_attr->show;
- if (!attr->store)
- attr->store = base_attr->store;
+ error = device_add(&starget->dev);
+ if (error) {
+ dev_err(&starget->dev, "target device_add failed, error %d\n", error);
+ return error;
}
+ transport_add_device(&starget->dev);
+ starget->state = STARGET_RUNNING;
+
+ pm_runtime_set_active(&starget->dev);
+ pm_runtime_enable(&starget->dev);
+ device_enable_async_suspend(&starget->dev);
- return device_create_file(dev, attr);
+ return 0;
}
+static struct device_attribute sdev_attr_queue_type_rw =
+ __ATTR(queue_type, S_IRUGO | S_IWUSR, show_queue_type_field,
+ sdev_store_queue_type_rw);
+
/**
* scsi_sysfs_add_sdev - add scsi device to sysfs
* @sdev: scsi_device to add
int scsi_sysfs_add_sdev(struct scsi_device *sdev)
{
int error, i;
+ struct request_queue *rq = sdev->request_queue;
+ struct scsi_target *starget = sdev->sdev_target;
- if ((error = scsi_device_set_state(sdev, SDEV_RUNNING)) != 0)
+ error = scsi_device_set_state(sdev, SDEV_RUNNING);
+ if (error)
return error;
+ error = scsi_target_add(starget);
+ if (error)
+ return error;
+
+ transport_configure_device(&starget->dev);
+
+ device_enable_async_suspend(&sdev->sdev_gendev);
+ scsi_autopm_get_target(starget);
+ pm_runtime_set_active(&sdev->sdev_gendev);
+ pm_runtime_forbid(&sdev->sdev_gendev);
+ pm_runtime_enable(&sdev->sdev_gendev);
+ scsi_autopm_put_target(starget);
+
+ /* The following call will keep sdev active indefinitely, until
+ * its driver does a corresponding scsi_autopm_pm_device(). Only
+ * drivers supporting autosuspend will do this.
+ */
+ scsi_autopm_get_device(sdev);
+
error = device_add(&sdev->sdev_gendev);
if (error) {
- put_device(sdev->sdev_gendev.parent);
- printk(KERN_INFO "error 1\n");
+ sdev_printk(KERN_INFO, sdev,
+ "failed to add device: %d\n", error);
return error;
}
- error = class_device_add(&sdev->sdev_classdev);
+ device_enable_async_suspend(&sdev->sdev_dev);
+ error = device_add(&sdev->sdev_dev);
if (error) {
- printk(KERN_INFO "error 2\n");
- goto clean_device;
+ sdev_printk(KERN_INFO, sdev,
+ "failed to add class device: %d\n", error);
+ device_del(&sdev->sdev_gendev);
+ return error;
+ }
+ transport_add_device(&sdev->sdev_gendev);
+ sdev->is_visible = 1;
+
+ /* create queue files, which may be writable, depending on the host */
+ if (sdev->host->hostt->change_queue_depth) {
+ error = device_create_file(&sdev->sdev_gendev,
+ &sdev_attr_queue_depth_rw);
+ error = device_create_file(&sdev->sdev_gendev,
+ &sdev_attr_queue_ramp_up_period);
}
+ else
+ error = device_create_file(&sdev->sdev_gendev, &dev_attr_queue_depth);
+ if (error)
+ return error;
+
+ if (sdev->host->hostt->change_queue_type)
+ error = device_create_file(&sdev->sdev_gendev, &sdev_attr_queue_type_rw);
+ else
+ error = device_create_file(&sdev->sdev_gendev, &dev_attr_queue_type);
+ if (error)
+ return error;
- /* take a reference for the sdev_classdev; this is
- * released by the sdev_class .release */
- get_device(&sdev->sdev_gendev);
+ error = bsg_register_queue(rq, &sdev->sdev_gendev, NULL, NULL);
+
+ if (error)
+ /* we're treating error on bsg register as non-fatal,
+ * so pretend nothing went wrong */
+ sdev_printk(KERN_INFO, sdev,
+ "Failed to register bsg queue, errno=%d\n", error);
+
+ /* add additional host specific attributes */
if (sdev->host->hostt->sdev_attrs) {
for (i = 0; sdev->host->hostt->sdev_attrs[i]; i++) {
- error = attr_add(&sdev->sdev_gendev,
+ error = device_create_file(&sdev->sdev_gendev,
sdev->host->hostt->sdev_attrs[i]);
- if (error) {
- __scsi_remove_device(sdev);
- goto out;
- }
- }
- }
-
- for (i = 0; scsi_sysfs_sdev_attrs[i]; i++) {
- if (!attr_overridden(sdev->host->hostt->sdev_attrs,
- scsi_sysfs_sdev_attrs[i])) {
- struct device_attribute * attr =
- attr_changed_internally(sdev->host,
- scsi_sysfs_sdev_attrs[i]);
- error = device_create_file(&sdev->sdev_gendev, attr);
- if (error) {
- __scsi_remove_device(sdev);
- goto out;
- }
+ if (error)
+ return error;
}
}
- transport_add_device(&sdev->sdev_gendev);
- out:
- return error;
-
- clean_device:
- scsi_device_set_state(sdev, SDEV_CANCEL);
-
- device_del(&sdev->sdev_gendev);
- transport_destroy_device(&sdev->sdev_gendev);
- put_device(&sdev->sdev_gendev);
-
return error;
}
{
struct device *dev = &sdev->sdev_gendev;
- if (scsi_device_set_state(sdev, SDEV_CANCEL) != 0)
- return;
+ if (sdev->is_visible) {
+ if (scsi_device_set_state(sdev, SDEV_CANCEL) != 0)
+ return;
- class_device_unregister(&sdev->sdev_classdev);
- transport_remove_device(dev);
- device_del(dev);
+ bsg_unregister_queue(sdev->request_queue);
+ device_unregister(&sdev->sdev_dev);
+ transport_remove_device(dev);
+ device_del(dev);
+ } else
+ put_device(&sdev->sdev_dev);
scsi_device_set_state(sdev, SDEV_DEL);
if (sdev->host->hostt->slave_destroy)
sdev->host->hostt->slave_destroy(sdev);
transport_destroy_device(dev);
+
+ /* cause the request function to reject all I/O requests */
+ sdev->request_queue->queuedata = NULL;
+
+ /* Freeing the queue signals to block that we're done */
+ scsi_free_queue(sdev->request_queue);
put_device(dev);
}
}
EXPORT_SYMBOL(scsi_remove_device);
-void __scsi_remove_target(struct scsi_target *starget)
+static void __scsi_remove_target(struct scsi_target *starget)
{
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
unsigned long flags;
list_for_each_entry(sdev, &shost->__devices, siblings) {
if (sdev->channel != starget->channel ||
sdev->id != starget->id ||
- sdev->sdev_state == SDEV_DEL)
+ scsi_device_get(sdev))
continue;
spin_unlock_irqrestore(shost->host_lock, flags);
scsi_remove_device(sdev);
+ scsi_device_put(sdev);
spin_lock_irqsave(shost->host_lock, flags);
goto restart;
}
*/
void scsi_remove_target(struct device *dev)
{
- struct device *rdev;
-
if (scsi_is_target_device(dev)) {
__scsi_remove_target(to_scsi_target(dev));
return;
}
- rdev = get_device(dev);
+ get_device(dev);
device_for_each_child(dev, NULL, __remove_child);
- put_device(rdev);
+ put_device(dev);
}
EXPORT_SYMBOL(scsi_remove_target);
}
EXPORT_SYMBOL(scsi_register_interface);
-
-static struct class_device_attribute *class_attr_overridden(
- struct class_device_attribute **attrs,
- struct class_device_attribute *attr)
-{
- int i;
-
- if (!attrs)
- return NULL;
- for (i = 0; attrs[i]; i++)
- if (!strcmp(attrs[i]->attr.name, attr->attr.name))
- return attrs[i];
- return NULL;
-}
-
-static int class_attr_add(struct class_device *classdev,
- struct class_device_attribute *attr)
-{
- struct class_device_attribute *base_attr;
-
- /*
- * Spare the caller from having to copy things it's not interested in.
- */
- base_attr = class_attr_overridden(scsi_sysfs_shost_attrs, attr);
- if (base_attr) {
- /* extend permissions */
- attr->attr.mode |= base_attr->attr.mode;
-
- /* override null show/store with default */
- if (!attr->show)
- attr->show = base_attr->show;
- if (!attr->store)
- attr->store = base_attr->store;
- }
-
- return class_device_create_file(classdev, attr);
-}
-
/**
* scsi_sysfs_add_host - add scsi host to subsystem
* @shost: scsi host struct to add to subsystem
- * @dev: parent struct device pointer
**/
int scsi_sysfs_add_host(struct Scsi_Host *shost)
{
int error, i;
+ /* add host specific attributes */
if (shost->hostt->shost_attrs) {
for (i = 0; shost->hostt->shost_attrs[i]; i++) {
- error = class_attr_add(&shost->shost_classdev,
+ error = device_create_file(&shost->shost_dev,
shost->hostt->shost_attrs[i]);
if (error)
return error;
}
}
- for (i = 0; scsi_sysfs_shost_attrs[i]; i++) {
- if (!class_attr_overridden(shost->hostt->shost_attrs,
- scsi_sysfs_shost_attrs[i])) {
- error = class_device_create_file(&shost->shost_classdev,
- scsi_sysfs_shost_attrs[i]);
- if (error)
- return error;
- }
- }
-
transport_register_device(&shost->shost_gendev);
+ transport_configure_device(&shost->shost_gendev);
return 0;
}
+static struct device_type scsi_dev_type = {
+ .name = "scsi_device",
+ .release = scsi_device_dev_release,
+ .groups = scsi_sdev_attr_groups,
+};
+
void scsi_sysfs_device_initialize(struct scsi_device *sdev)
{
unsigned long flags;
device_initialize(&sdev->sdev_gendev);
sdev->sdev_gendev.bus = &scsi_bus_type;
- sdev->sdev_gendev.release = scsi_device_dev_release;
- sprintf(sdev->sdev_gendev.bus_id,"%d:%d:%d:%d",
- sdev->host->host_no, sdev->channel, sdev->id,
- sdev->lun);
-
- class_device_initialize(&sdev->sdev_classdev);
- sdev->sdev_classdev.dev = &sdev->sdev_gendev;
- sdev->sdev_classdev.class = &sdev_class;
- snprintf(sdev->sdev_classdev.class_id, BUS_ID_SIZE,
- "%d:%d:%d:%d", sdev->host->host_no,
- sdev->channel, sdev->id, sdev->lun);
+ sdev->sdev_gendev.type = &scsi_dev_type;
+ dev_set_name(&sdev->sdev_gendev, "%d:%d:%d:%d",
+ sdev->host->host_no, sdev->channel, sdev->id, sdev->lun);
+
+ device_initialize(&sdev->sdev_dev);
+ sdev->sdev_dev.parent = get_device(&sdev->sdev_gendev);
+ sdev->sdev_dev.class = &sdev_class;
+ dev_set_name(&sdev->sdev_dev, "%d:%d:%d:%d",
+ sdev->host->host_no, sdev->channel, sdev->id, sdev->lun);
sdev->scsi_level = starget->scsi_level;
transport_setup_device(&sdev->sdev_gendev);
spin_lock_irqsave(shost->host_lock, flags);
int scsi_is_sdev_device(const struct device *dev)
{
- return dev->release == scsi_device_dev_release;
+ return dev->type == &scsi_dev_type;
}
EXPORT_SYMBOL(scsi_is_sdev_device);
Code Review / linux-2.6.git / blobdiff