EXPORT_SYMBOL(scsi_logging_level);
#endif
-const char *const scsi_device_types[MAX_SCSI_DEVICE_CODE] = {
+/* NB: These are exposed through /proc/scsi/scsi and form part of the ABI.
+ * You may not alter any existing entry (although adding new ones is
+ * encouraged once assigned by ANSI/INCITS T10
+ */
+static const char *const scsi_device_types[] = {
"Direct-Access ",
"Sequential-Access",
"Printer ",
"Optical Device ",
"Medium Changer ",
"Communications ",
- "Unknown ",
- "Unknown ",
+ "ASC IT8 ",
+ "ASC IT8 ",
"RAID ",
"Enclosure ",
"Direct-Access-RBC",
+ "Optical card ",
+ "Bridge controller",
+ "Object storage ",
+ "Automation/Drive ",
};
-EXPORT_SYMBOL(scsi_device_types);
+
+const char * scsi_device_type(unsigned type)
+{
+ if (type == 0x1e)
+ return "Well-known LUN ";
+ if (type == 0x1f)
+ return "No Device ";
+ if (type >= ARRAY_SIZE(scsi_device_types))
+ return "Unknown ";
+ return scsi_device_types[type];
+}
+
+EXPORT_SYMBOL(scsi_device_type);
struct scsi_host_cmd_pool {
- kmem_cache_t *slab;
+ struct kmem_cache *slab;
unsigned int users;
char *name;
unsigned int slab_flags;
static DEFINE_MUTEX(host_cmd_pool_mutex);
-static struct scsi_cmnd *__scsi_get_command(struct Scsi_Host *shost,
- gfp_t gfp_mask)
+struct scsi_cmnd *__scsi_get_command(struct Scsi_Host *shost, gfp_t gfp_mask)
{
struct scsi_cmnd *cmd;
return cmd;
}
+EXPORT_SYMBOL_GPL(__scsi_get_command);
/*
* Function: scsi_get_command()
put_device(&dev->sdev_gendev);
return cmd;
-}
+}
EXPORT_SYMBOL(scsi_get_command);
+void __scsi_put_command(struct Scsi_Host *shost, struct scsi_cmnd *cmd,
+ struct device *dev)
+{
+ unsigned long flags;
+
+ /* changing locks here, don't need to restore the irq state */
+ spin_lock_irqsave(&shost->free_list_lock, flags);
+ if (unlikely(list_empty(&shost->free_list))) {
+ list_add(&cmd->list, &shost->free_list);
+ cmd = NULL;
+ }
+ spin_unlock_irqrestore(&shost->free_list_lock, flags);
+
+ if (likely(cmd != NULL))
+ kmem_cache_free(shost->cmd_pool->slab, cmd);
+
+ put_device(dev);
+}
+EXPORT_SYMBOL(__scsi_put_command);
+
/*
* Function: scsi_put_command()
*
void scsi_put_command(struct scsi_cmnd *cmd)
{
struct scsi_device *sdev = cmd->device;
- struct Scsi_Host *shost = sdev->host;
unsigned long flags;
-
+
/* serious error if the command hasn't come from a device list */
spin_lock_irqsave(&cmd->device->list_lock, flags);
BUG_ON(list_empty(&cmd->list));
list_del_init(&cmd->list);
- spin_unlock(&cmd->device->list_lock);
- /* changing locks here, don't need to restore the irq state */
- spin_lock(&shost->free_list_lock);
- if (unlikely(list_empty(&shost->free_list))) {
- list_add(&cmd->list, &shost->free_list);
- cmd = NULL;
- }
- spin_unlock_irqrestore(&shost->free_list_lock, flags);
+ spin_unlock_irqrestore(&cmd->device->list_lock, flags);
- if (likely(cmd != NULL))
- kmem_cache_free(shost->cmd_pool->slab, cmd);
-
- put_device(&sdev->sdev_gendev);
+ __scsi_put_command(cmd->device->host, cmd, &sdev->sdev_gendev);
}
EXPORT_SYMBOL(scsi_put_command);
if (level > 3) {
printk(KERN_INFO "buffer = 0x%p, bufflen = %d,"
" done = 0x%p, queuecommand 0x%p\n",
- cmd->buffer, cmd->bufflen,
+ cmd->request_buffer, cmd->request_bufflen,
cmd->done,
sdev->host->hostt->queuecommand);
return rtn;
}
-
-/*
- * Per-CPU I/O completion queue.
- */
-static DEFINE_PER_CPU(struct list_head, scsi_done_q);
-
/**
* scsi_req_abort_cmd -- Request command recovery for the specified command
* cmd: pointer to the SCSI command of interest
*/
int scsi_retry_command(struct scsi_cmnd *cmd)
{
- /*
- * Restore the SCSI command state.
- */
- scsi_setup_cmd_retry(cmd);
-
/*
* Zero the sense information from the last time we tried
* this command.
"Notifying upper driver of completion "
"(result %x)\n", cmd->result));
- /*
- * We can get here with use_sg=0, causing a panic in the upper level
- */
- cmd->use_sg = cmd->old_use_sg;
cmd->done(cmd);
}
EXPORT_SYMBOL(scsi_finish_command);
*/
int scsi_device_get(struct scsi_device *sdev)
{
- if (sdev->sdev_state == SDEV_DEL || sdev->sdev_state == SDEV_CANCEL)
+ if (sdev->sdev_state == SDEV_DEL)
return -ENXIO;
if (!get_device(&sdev->sdev_gendev))
return -ENXIO;
- if (!try_module_get(sdev->host->hostt->module)) {
- put_device(&sdev->sdev_gendev);
- return -ENXIO;
- }
+ /* We can fail this if we're doing SCSI operations
+ * from module exit (like cache flush) */
+ try_module_get(sdev->host->hostt->module);
+
return 0;
}
EXPORT_SYMBOL(scsi_device_get);
*/
void scsi_device_put(struct scsi_device *sdev)
{
- module_put(sdev->host->hostt->module);
+#ifdef CONFIG_MODULE_UNLOAD
+ struct module *module = sdev->host->hostt->module;
+
+ /* The module refcount will be zero if scsi_device_get()
+ * was called from a module removal routine */
+ if (module && module_refcount(module) != 0)
+ module_put(module);
+#endif
put_device(&sdev->sdev_gendev);
}
EXPORT_SYMBOL(scsi_device_put);
spin_lock_irqsave(&sdev->list_lock, flags);
list_for_each_entry(scmd, &sdev->cmd_list, list) {
- if (scmd->request && scmd->request->rq_status != RQ_INACTIVE) {
+ if (scmd->request) {
/*
* If we are unable to remove the timer, it means
* that the command has already timed out or
static int __init init_scsi(void)
{
- int error, i;
+ int error;
error = scsi_init_queue();
if (error)
if (error)
goto cleanup_sysctl;
- for_each_possible_cpu(i)
- INIT_LIST_HEAD(&per_cpu(scsi_done_q, i));
+ scsi_netlink_init();
printk(KERN_NOTICE "SCSI subsystem initialized\n");
return 0;
static void __exit exit_scsi(void)
{
+ scsi_netlink_exit();
scsi_sysfs_unregister();
scsi_exit_sysctl();
scsi_exit_hosts();