* Created to pull SCSI mid layer sysfs routines into one file.
*/
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/blkdev.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 {
+static struct device_type scsi_dev_type;
+
+static const struct {
enum scsi_device_state value;
char *name;
} sdev_states[] = {
int i;
char *name = NULL;
- for (i = 0; i < sizeof(sdev_states)/sizeof(sdev_states[0]); i++) {
+ for (i = 0; i < ARRAY_SIZE(sdev_states); i++) {
if (sdev_states[i].value == state) {
name = sdev_states[i].name;
break;
return name;
}
+static const struct {
+ enum scsi_host_state value;
+ char *name;
+} shost_states[] = {
+ { SHOST_CREATED, "created" },
+ { SHOST_RUNNING, "running" },
+ { SHOST_CANCEL, "cancel" },
+ { SHOST_DEL, "deleted" },
+ { SHOST_RECOVERY, "recovery" },
+ { SHOST_CANCEL_RECOVERY, "cancel/recovery" },
+ { SHOST_DEL_RECOVERY, "deleted/recovery", },
+};
+const char *scsi_host_state_name(enum scsi_host_state state)
+{
+ int i;
+ char *name = NULL;
+
+ for (i = 0; i < ARRAY_SIZE(shost_states); i++) {
+ if (shost_states[i].value == state) {
+ name = shost_states[i].name;
+ break;
+ }
+ }
+ return name;
+}
+
static int check_set(unsigned int *val, char *src)
{
char *last;
return -EINVAL;
if (check_set(&lun, s3))
return -EINVAL;
- res = scsi_scan_host_selected(shost, channel, id, lun, 1);
+ if (shost->transportt->user_scan)
+ res = shost->transportt->user_scan(shost, channel, id, lun);
+ else
+ res = scsi_scan_host_selected(shost, channel, id, lun, 1);
return res;
}
*/
#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 device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int i;
+ struct Scsi_Host *shost = class_to_shost(dev);
+ enum scsi_host_state state = 0;
+
+ for (i = 0; i < ARRAY_SIZE(shost_states); i++) {
+ const int len = strlen(shost_states[i].name);
+ if (strncmp(shost_states[i].name, buf, len) == 0 &&
+ buf[len] == '\n') {
+ state = shost_states[i].value;
+ break;
+ }
+ }
+ if (!state)
+ return -EINVAL;
+
+ if (scsi_host_set_state(shost, state))
+ return -EINVAL;
+ return count;
+}
+
+static ssize_t
+show_shost_state(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(dev);
+ const char *name = scsi_host_state_name(shost->shost_state);
+
+ if (!name)
+ return -EINVAL;
+
+ return snprintf(buf, 20, "%s\n", name);
+}
+
+/* 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(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_sg_tablesize,
- &class_device_attr_unchecked_isa_dma,
- &class_device_attr_proc_name,
- &class_device_attr_scan,
+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_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,
+};
+
+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;
put_device(&sdev->sdev_gendev);
}
-void scsi_device_dev_release(struct device *dev)
+static void scsi_device_dev_release_usercontext(struct work_struct *work)
{
struct scsi_device *sdev;
struct device *parent;
struct scsi_target *starget;
+ struct list_head *this, *tmp;
unsigned long flags;
- parent = dev->parent;
- sdev = to_scsi_device(dev);
+ sdev = container_of(work, struct scsi_device, ew.work);
+
+ parent = sdev->sdev_gendev.parent;
starget = to_scsi_target(parent);
spin_lock_irqsave(sdev->host->host_lock, flags);
list_del(&sdev->starved_entry);
spin_unlock_irqrestore(sdev->host->host_lock, flags);
+ 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);
+ }
+
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;
}
scsi_target_reap(scsi_target(sdev));
put_device(parent);
}
-struct class sdev_class = {
+static void scsi_device_dev_release(struct device *dev)
+{
+ struct scsi_device *sdp = to_scsi_device(dev);
+ execute_in_process_context(scsi_device_dev_release_usercontext,
+ &sdp->ew);
+}
+
+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, struct kobj_uevent_env *env)
+{
+ struct scsi_device *sdev;
+
+ if (dev->type != &scsi_dev_type)
+ return 0;
+
+ sdev = to_scsi_device(dev);
+
+ add_uevent_var(env, "MODALIAS=" SCSI_DEVICE_MODALIAS_FMT, sdev->type);
+ return 0;
+}
+
+static int scsi_bus_suspend(struct device * dev, pm_message_t state)
+{
+ struct device_driver *drv;
+ struct scsi_device *sdev;
+ int err;
+
+ if (dev->type != &scsi_dev_type)
+ return 0;
+
+ drv = dev->driver;
+ sdev = to_scsi_device(dev);
+
+ err = scsi_device_quiesce(sdev);
+ if (err)
+ return err;
+
+ if (drv && drv->suspend) {
+ err = drv->suspend(dev, state);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+static int scsi_bus_resume(struct device * dev)
+{
+ struct device_driver *drv;
+ struct scsi_device *sdev;
+ int err = 0;
+
+ if (dev->type != &scsi_dev_type)
+ return 0;
+
+ drv = dev->driver;
+ sdev = to_scsi_device(dev);
+
+ if (drv && drv->resume)
+ err = drv->resume(dev);
+
+ scsi_device_resume(sdev);
+
+ return err;
+}
+
+static int scsi_bus_remove(struct device *dev)
+{
+ struct device_driver *drv = dev->driver;
+ struct scsi_device *sdev = to_scsi_device(dev);
+ int err = 0;
+
+ /* reset the prep_fn back to the default since the
+ * driver may have altered it and it's being removed */
+ blk_queue_prep_rq(sdev->request_queue, scsi_prep_fn);
+
+ if (drv && drv->remove)
+ err = drv->remove(dev);
+
+ return 0;
+}
+
struct bus_type scsi_bus_type = {
.name = "scsi",
.match = scsi_bus_match,
+ .uevent = scsi_bus_uevent,
+ .suspend = scsi_bus_suspend,
+ .resume = scsi_bus_resume,
+ .remove = scsi_bus_remove,
};
+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, char *buf) \
+sdev_show_##field (struct device *dev, struct device_attribute *attr, \
+ char *buf) \
{ \
struct scsi_device *sdev; \
sdev = to_scsi_device(dev); \
sdev_show_function(field, format_string) \
\
static ssize_t \
-sdev_store_##field (struct device *dev, 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); \
sdev_show_function(field, "%d\n") \
\
static ssize_t \
-sdev_store_##field (struct device *dev, 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, char *buf)
+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, 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, 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;
}
static DEVICE_ATTR(rescan, S_IWUSR, NULL, store_rescan_field);
-static ssize_t sdev_store_delete(struct device *dev, const char *buf,
- size_t count)
+static void sdev_store_delete_callback(struct device *dev)
{
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)
+{
+ int rc;
+
+ /* An attribute cannot be unregistered by one of its own methods,
+ * so we have to use this roundabout approach.
+ */
+ rc = device_schedule_callback(dev, sdev_store_delete_callback);
+ if (rc)
+ count = rc;
return count;
};
static DEVICE_ATTR(delete, S_IWUSR, NULL, sdev_store_delete);
static ssize_t
-store_state_field(struct device *dev, 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);
enum scsi_device_state state = 0;
- for (i = 0; i < sizeof(sdev_states)/sizeof(sdev_states[0]); i++) {
+ for (i = 0; i < ARRAY_SIZE(sdev_states); i++) {
const int len = strlen(sdev_states[i].name);
if (strncmp(sdev_states[i].name, buf, len) == 0 &&
buf[len] == '\n') {
}
static ssize_t
-show_state_field(struct device *dev, char *buf)
+show_state_field(struct device *dev, struct device_attribute *attr, char *buf)
{
struct scsi_device *sdev = to_scsi_device(dev);
const char *name = scsi_device_state_name(sdev->sdev_state);
static DEVICE_ATTR(state, S_IRUGO | S_IWUSR, show_state_field, store_state_field);
static ssize_t
-show_queue_type_field(struct device *dev, 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, 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, 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); \
show_sdev_iostat(iodone_cnt);
show_sdev_iostat(ioerr_cnt);
+static ssize_t
+sdev_show_modalias(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct scsi_device *sdev;
+ sdev = to_scsi_device(dev);
+ return snprintf (buf, 20, SCSI_DEVICE_MODALIAS_FMT "\n", sdev->type);
+}
+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,
+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 struct attribute_group *scsi_sdev_attr_groups[] = {
+ &scsi_sdev_attr_group,
NULL
};
-static ssize_t sdev_store_queue_depth_rw(struct device *dev, 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);
__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, const char *buf,
- size_t count)
+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);
+ get_device(&starget->dev);
+ scsi_target_reap(starget);
+ put_device(&starget->dev);
+ return error;
}
+ transport_add_device(&starget->dev);
+ starget->state = STARGET_RUNNING;
- 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)
return error;
+ error = scsi_target_add(starget);
+ if (error)
+ return error;
+
+ transport_configure_device(&starget->dev);
error = device_add(&sdev->sdev_gendev);
if (error) {
put_device(sdev->sdev_gendev.parent);
printk(KERN_INFO "error 1\n");
return error;
}
- error = class_device_add(&sdev->sdev_classdev);
+ error = device_add(&sdev->sdev_dev);
if (error) {
printk(KERN_INFO "error 2\n");
goto clean_device;
}
- /* take a reference for the sdev_classdev; this is
+ /* take a reference for the sdev_dev; this is
* released by the sdev_class .release */
get_device(&sdev->sdev_gendev);
+
+ /* 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);
+ else
+ error = device_create_file(&sdev->sdev_gendev, &dev_attr_queue_depth);
+ if (error) {
+ __scsi_remove_device(sdev);
+ goto out;
+ }
+ 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) {
+ __scsi_remove_device(sdev);
+ goto out;
+ }
+
+ error = bsg_register_queue(rq, &sdev->sdev_gendev, NULL, NULL);
+
+ if (error)
+ sdev_printk(KERN_INFO, sdev,
+ "Failed to register bsg queue, errno=%d\n", error);
+
+ /* we're treating error on bsg register as non-fatal, so pretend
+ * nothing went wrong */
+ error = 0;
+
+ /* 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);
+ __scsi_remove_device(sdev);
goto out;
}
}
return error;
}
+void __scsi_remove_device(struct scsi_device *sdev)
+{
+ struct device *dev = &sdev->sdev_gendev;
+
+ if (scsi_device_set_state(sdev, SDEV_CANCEL) != 0)
+ return;
+
+ bsg_unregister_queue(sdev->request_queue);
+ device_unregister(&sdev->sdev_dev);
+ transport_remove_device(dev);
+ device_del(dev);
+ scsi_device_set_state(sdev, SDEV_DEL);
+ if (sdev->host->hostt->slave_destroy)
+ sdev->host->hostt->slave_destroy(sdev);
+ transport_destroy_device(dev);
+ put_device(dev);
+}
+
/**
* scsi_remove_device - unregister a device from the scsi bus
* @sdev: scsi_device to unregister
{
struct Scsi_Host *shost = sdev->host;
- down(&shost->scan_mutex);
- if (scsi_device_set_state(sdev, SDEV_CANCEL) != 0)
- goto out;
-
- class_device_unregister(&sdev->sdev_classdev);
- device_del(&sdev->sdev_gendev);
- scsi_device_set_state(sdev, SDEV_DEL);
- if (sdev->host->hostt->slave_destroy)
- sdev->host->hostt->slave_destroy(sdev);
- transport_unregister_device(&sdev->sdev_gendev);
- put_device(&sdev->sdev_gendev);
-out:
- up(&shost->scan_mutex);
+ mutex_lock(&shost->scan_mutex);
+ __scsi_remove_device(sdev);
+ mutex_unlock(&shost->scan_mutex);
}
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;
- struct scsi_device *sdev, *tmp;
+ struct scsi_device *sdev;
spin_lock_irqsave(shost->host_lock, flags);
starget->reap_ref++;
- list_for_each_entry_safe(sdev, tmp, &shost->__devices, siblings) {
+ restart:
+ list_for_each_entry(sdev, &shost->__devices, siblings) {
if (sdev->channel != starget->channel ||
- sdev->id != starget->id)
+ sdev->id != starget->id ||
+ sdev->sdev_state == SDEV_DEL)
continue;
spin_unlock_irqrestore(shost->host_lock, flags);
scsi_remove_device(sdev);
spin_lock_irqsave(shost->host_lock, flags);
+ goto restart;
}
spin_unlock_irqrestore(shost->host_lock, flags);
scsi_target_reap(starget);
}
+static int __remove_child (struct device * dev, void * data)
+{
+ if (scsi_is_target_device(dev))
+ __scsi_remove_target(to_scsi_target(dev));
+ return 0;
+}
+
/**
* scsi_remove_target - try to remove a target and all its devices
* @dev: generic starget or parent of generic stargets to be removed
*/
void scsi_remove_target(struct device *dev)
{
- struct device *rdev, *idev, *next;
+ struct device *rdev;
if (scsi_is_target_device(dev)) {
__scsi_remove_target(to_scsi_target(dev));
}
rdev = get_device(dev);
- list_for_each_entry_safe(idev, next, &dev->children, node) {
- if (scsi_is_target_device(idev))
- __scsi_remove_target(to_scsi_target(idev));
- }
+ device_for_each_child(dev, NULL, __remove_child);
put_device(rdev);
}
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
{
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;
+ sdev->sdev_gendev.type = &scsi_dev_type;
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,
+ device_initialize(&sdev->sdev_dev);
+ sdev->sdev_dev.parent = &sdev->sdev_gendev;
+ sdev->sdev_dev.class = &sdev_class;
+ snprintf(sdev->sdev_dev.bus_id, BUS_ID_SIZE,
"%d:%d:%d:%d", sdev->host->host_no,
sdev->channel, sdev->id, sdev->lun);
- sdev->scsi_level = SCSI_2;
+ sdev->scsi_level = starget->scsi_level;
transport_setup_device(&sdev->sdev_gendev);
spin_lock_irqsave(shost->host_lock, flags);
list_add_tail(&sdev->same_target_siblings, &starget->devices);
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);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff