Release 4.7 drivers/scsi/scsi_sysfs.c

Directory: drivers/scsi
/*
 * scsi_sysfs.c
 *
 * SCSI sysfs interface routines.
 *
 * Created to pull SCSI mid layer sysfs routines into one file.
 */

#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_dh.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_states[] = {
	{ SDEV_CREATED, "created" },
	{ SDEV_RUNNING, "running" },
	{ SDEV_CANCEL, "cancel" },
	{ SDEV_DEL, "deleted" },
	{ SDEV_QUIESCE, "quiesce" },
	{ SDEV_OFFLINE,	"offline" },
	{ SDEV_TRANSPORT_OFFLINE, "transport-offline" },
	{ SDEV_BLOCK,	"blocked" },
	{ SDEV_CREATED_BLOCK, "created-blocked" },
};



const char *scsi_device_state_name(enum scsi_device_state state)
{
	int i;
	char *name = NULL;

	for (i = 0; i < ARRAY_SIZE(sdev_states); i++) {
		if (sdev_states[i].value == state) {
			name = sdev_states[i].name;
			break;
		}
	}
	return name;
}

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james bottomley james bottomley 63 98.44% 1 50.00%
tobias klauser tobias klauser 1 1.56% 1 50.00%
Total 64 100.00% 2 100.00%

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;
}

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mike anderson mike anderson 63 98.44% 1 50.00%
tobias klauser tobias klauser 1 1.56% 1 50.00%
Total 64 100.00% 2 100.00%

#ifdef CONFIG_SCSI_DH
static const struct {
	
unsigned char	value;
	
char		*name;
} 
sdev_access_states[] = {
	{ SCSI_ACCESS_STATE_OPTIMAL, "active/optimized" },
	{ SCSI_ACCESS_STATE_ACTIVE, "active/non-optimized" },
	{ SCSI_ACCESS_STATE_STANDBY, "standby" },
	{ SCSI_ACCESS_STATE_UNAVAILABLE, "unavailable" },
	{ SCSI_ACCESS_STATE_LBA, "lba-dependent" },
	{ SCSI_ACCESS_STATE_OFFLINE, "offline" },
	{ SCSI_ACCESS_STATE_TRANSITIONING, "transitioning" },
};



static const char *scsi_access_state_name(unsigned char state)
{
	int i;
	char *name = NULL;

	for (i = 0; i < ARRAY_SIZE(sdev_access_states); i++) {
		if (sdev_access_states[i].value == state) {
			name = sdev_access_states[i].name;
			break;
		}
	}
	return name;
}
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hannes reinecke hannes reinecke 64 98.46% 1 50.00%
bart van assche bart van assche 1 1.54% 1 50.00%
Total 65 100.00% 2 100.00%

#endif



static int check_set(unsigned long long *val, char *src)
{
	char *last;

	if (strncmp(src, "-", 20) == 0) {
		*val = SCAN_WILD_CARD;
	} else {
		/*
                 * Doesn't check for int overflow
                 */
		*val = simple_strtoull(src, &last, 0);
		if (*last != '\0')
			return 1;
	}
	return 0;
}

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patrick mansfield patrick mansfield 67 95.71% 1 50.00%
hannes reinecke hannes reinecke 3 4.29% 1 50.00%
Total 70 100.00% 2 100.00%



static int scsi_scan(struct Scsi_Host *shost, const char *str)
{
	char s1[15], s2[15], s3[17], junk;
	unsigned long long channel, id, lun;
	int res;

	res = sscanf(str, "%10s %10s %16s %c", s1, s2, s3, &junk);
	if (res != 3)
		return -EINVAL;
	if (check_set(&channel, s1))
		return -EINVAL;
	if (check_set(&id, s2))
		return -EINVAL;
	if (check_set(&lun, s3))
		return -EINVAL;
	if (shost->transportt->user_scan)
		res = shost->transportt->user_scan(shost, channel, id, lun);
	else
		res = scsi_scan_host_selected(shost, channel, id, lun,
					      SCSI_SCAN_MANUAL);
	return res;
}

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patrick mansfield patrick mansfield 129 80.62% 1 25.00%
christoph hellwig christoph hellwig 26 16.25% 1 25.00%
hannes reinecke hannes reinecke 5 3.12% 2 50.00%
Total 160 100.00% 4 100.00%

/*
 * shost_show_function: macro to create an attr function that can be used to
 * show a non-bit field.
 */

#define shost_show_function(name, field, format_string)			\
static ssize_t                                                          \
show_##name (struct device *dev, struct device_attribute *attr,         \
             char *buf)                                                 \
{                                                                       \
        struct Scsi_Host *shost = class_to_shost(dev);                  \
        return snprintf (buf, 20, format_string, shost->field);         \
}

/*
 * shost_rd_attr: macro to create a function and attribute variable for a
 * read only field.
 */

#define shost_rd_attr2(name, field, format_string)			\
	shost_show_function(name, field, format_string)                 \
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 device *dev, struct device_attribute *attr,
	   const char *buf, size_t count)
{
	struct Scsi_Host *shost = class_to_shost(dev);
	int res;

	res = scsi_scan(shost, buf);
	if (res == 0)
		res = count;
	return res;
}Contributors
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patrick mansfield patrick mansfield 51 86.44% 1 50.00%
tony jones tony jones 8 13.56% 1 50.00%
Total 59 100.00% 2 100.00%

;
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;
}

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mike anderson mike anderson 128 93.43% 1 33.33%
tony jones tony jones 8 5.84% 1 33.33%
tobias klauser tobias klauser 1 0.73% 1 33.33%
Total 137 100.00% 3 100.00%


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);
}

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mike anderson mike anderson 55 87.30% 1 50.00%
tony jones tony jones 8 12.70% 1 50.00%
Total 63 100.00% 2 100.00%

/* DEVICE_ATTR(state) clashes with dev_attr_state for sdev */

static 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;
}

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fujita tomonori fujita tomonori 75 100.00% 1 100.00%
Total 75 100.00% 1 100.00%


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);
}

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fujita tomonori fujita tomonori 38 64.41% 1 33.33%
james bottomley james bottomley 13 22.03% 1 33.33%
tony jones tony jones 8 13.56% 1 33.33%
Total 59 100.00% 3 100.00%

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);
}

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fujita tomonori fujita tomonori 51 86.44% 1 50.00%
tony jones tony jones 8 13.56% 1 50.00%
Total 59 100.00% 2 100.00%

static DEVICE_ATTR(active_mode, S_IRUGO | S_IWUSR, show_shost_active_mode, NULL);



static int check_reset_type(const char *str)
{
	if (sysfs_streq(str, "adapter"))
		return SCSI_ADAPTER_RESET;
	else if (sysfs_streq(str, "firmware"))
		return SCSI_FIRMWARE_RESET;
	else
		return 0;
}

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vikas chaudhary vikas chaudhary 37 92.50% 1 50.00%
sasha levin sasha levin 3 7.50% 1 50.00%
Total 40 100.00% 2 100.00%


static ssize_t

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;
	int ret = -EINVAL;
	int type;

	type = check_reset_type(buf);
	if (!type)
		goto exit_store_host_reset;

	if (sht->host_reset)
		ret = sht->host_reset(shost, type);

exit_store_host_reset:
	if (ret == 0)
		ret = count;
	return ret;
}

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vikas chaudhary vikas chaudhary 98 98.99% 1 50.00%
sasha levin sasha levin 1 1.01% 1 50.00%
Total 99 100.00% 2 100.00%

static DEVICE_ATTR(host_reset, S_IWUSR, NULL, store_host_reset);


static ssize_t

show_shost_eh_deadline(struct device *dev,
		      struct device_attribute *attr, char *buf)
{
	struct Scsi_Host *shost = class_to_shost(dev);

	if (shost->eh_deadline == -1)
		return snprintf(buf, strlen("off") + 2, "off\n");
	return sprintf(buf, "%u\n", shost->eh_deadline / HZ);
}

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hannes reinecke hannes reinecke 43 63.24% 1 50.00%
ren mingxin ren mingxin 25 36.76% 1 50.00%
Total 68 100.00% 2 100.00%


static ssize_t

store_shost_eh_deadline(struct device *dev, struct device_attribute *attr,
		const char *buf, size_t count)
{
	struct Scsi_Host *shost = class_to_shost(dev);
	int ret = -EINVAL;
	unsigned long deadline, flags;

	if (shost->transportt &&
	    (shost->transportt->eh_strategy_handler ||
	     !shost->hostt->eh_host_reset_handler))
		return ret;

	if (!strncmp(buf, "off", strlen("off")))
		deadline = -1;
	else {
		ret = kstrtoul(buf, 10, &deadline);
		if (ret)
			return ret;
		if (deadline * HZ > UINT_MAX)
			return -EINVAL;
	}

	spin_lock_irqsave(shost->host_lock, flags);
	if (scsi_host_in_recovery(shost))
		ret = -EBUSY;
	else {
		if (deadline == -1)
			shost->eh_deadline = -1;
		else
			shost->eh_deadline = deadline * HZ;

		ret = count;
	}
	spin_unlock_irqrestore(shost->host_lock, flags);

	return ret;
}

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hannes reinecke hannes reinecke 126 67.38% 2 66.67%
ren mingxin ren mingxin 61 32.62% 1 33.33%
Total 187 100.00% 3 100.00%

static DEVICE_ATTR(eh_deadline, S_IRUGO | S_IWUSR, show_shost_eh_deadline, store_shost_eh_deadline);

shost_rd_attr(use_blk_mq, "%d\n");
shost_rd_attr(unique_id, "%u\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 ssize_t

show_host_busy(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct Scsi_Host *shost = class_to_shost(dev);
	return snprintf(buf, 20, "%d\n", atomic_read(&shost->host_busy));
}
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christoph hellwig christoph hellwig 48 100.00% 1 100.00%
Total 48 100.00% 1 100.00%

static DEVICE_ATTR(host_busy, S_IRUGO, show_host_busy, NULL);


static struct attribute *scsi_sysfs_shost_attrs[] = {
	&dev_attr_use_blk_mq.attr,
	&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,
	&dev_attr_host_reset.attr,
	&dev_attr_eh_deadline.attr,
	NULL
};


static 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;

	sdev = class_to_sdev(class_dev);
	put_device(&sdev->sdev_gendev);
}

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mike anderson mike anderson 30 96.77% 1 50.00%
tony jones tony jones 1 3.23% 1 50.00%
Total 31 100.00% 2 100.00%



static void scsi_device_dev_release_usercontext(struct work_struct *work)
{
	struct scsi_device *sdev;
	struct device *parent;
	struct list_head *this, *tmp;
	unsigned long flags;

	sdev = container_of(work, struct scsi_device, ew.work);

	scsi_dh_release_device(sdev);

	parent = sdev->sdev_gendev.parent;

	spin_lock_irqsave(sdev->host->host_lock, flags);
	list_del(&sdev->siblings);
	list_del(&sdev->same_target_siblings);
	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);
	}

	blk_put_queue(sdev->request_queue);
	/* NULL queue means the device can't be used */
	sdev->request_queue = NULL;

	kfree(sdev->vpd_pg83);
	kfree(sdev->vpd_pg80);
	kfree(sdev->inquiry);
	kfree(sdev);

	if (parent)
		put_device(parent);
}

Contributors
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mike anderson mike anderson 82 40.39% 2 15.38%
jeff garzik jeff garzik 55 27.09% 1 7.69%
james bottomley james bottomley 33 16.26% 6 46.15%
david howells david howells 20 9.85% 1 7.69%
hannes reinecke hannes reinecke 7 3.45% 1 7.69%
jun'ichi nomura jun'ichi nomura 5 2.46% 1 7.69%
adrian bunk adrian bunk 1 0.49% 1 7.69%
Total 203 100.00% 13 100.00%



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);
}

Contributors
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james bottomley james bottomley 31 100.00% 2 100.00%
Total 31 100.00% 2 100.00%


static struct class sdev_class = {
	.name		= "scsi_device",
	.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;

	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;
}

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mike anderson mike anderson 18 29.03% 1 20.00%
kurt garloff kurt garloff 18 29.03% 1 20.00%
hannes reinecke hannes reinecke 16 25.81% 1 20.00%
james bottomley james bottomley 9 14.52% 1 20.00%
christoph hellwig christoph hellwig 1 1.61% 1 20.00%
Total 62 100.00% 5 100.00%



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;
}

Contributors
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michael tokarev michael tokarev 35 63.64% 1 33.33%
james bottomley james bottomley 16 29.09% 1 33.33%
kay sievers kay sievers 4 7.27% 1 33.33%
Total 55 100.00% 3 100.00%


struct bus_type scsi_bus_type = {
        .name		= "scsi",
        .match		= scsi_bus_match,
	.uevent		= scsi_bus_uevent,
#ifdef CONFIG_PM
	.pm		= &scsi_bus_pm_ops,
#endif
};

EXPORT_SYMBOL_GPL(scsi_bus_type);



int scsi_sysfs_register(void)
{
	int error;

	error = bus_register(&scsi_bus_type);
	if (!error) {
		error = class_register(&sdev_class);
		if (error)
			bus_unregister(&scsi_bus_type);
	}

	return error;
}

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mike anderson mike anderson 29 63.04% 2 50.00%
christoph hellwig christoph hellwig 17 36.96% 2 50.00%
Total 46 100.00% 4 100.00%



void scsi_sysfs_unregister(void)
{
	class_unregister(&sdev_class);
	bus_unregister(&scsi_bus_type);
}

Contributors
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mike anderson mike anderson 10 52.63% 1 50.00%
christoph hellwig christoph hellwig 9 47.37% 1 50.00%
Total 19 100.00% 2 100.00%

/*
 * sdev_show_function: macro to create an attr function that can be used to
 * show a non-bit field.
 */

#define sdev_show_function(field, format_string)				\
static ssize_t                                                          \
sdev_show_##field (struct device *dev, struct device_attribute *attr,   \
                   char *buf)                                           \
{                                                                       \
        struct scsi_device *sdev;                                       \
        sdev = to_scsi_device(dev);                                     \
        return snprintf (buf, 20, format_string, sdev->field);          \
}									\

/*
 * sdev_rd_attr: macro to create a function and attribute variable for a
 * read only field.
 */

#define sdev_rd_attr(field, format_string)				\
	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.
 */
sdev_rd_attr (type, "%d\n");
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");


static ssize_t

sdev_show_device_busy(struct device *dev, struct device_attribute *attr,
		char *buf)
{
	struct scsi_device *sdev = to_scsi_device(dev);
	return snprintf(buf, 20, "%d\n", atomic_read(&sdev->device_busy));
}
Contributors
Person Tokens Prop Commits CommitProp
christoph hellwig christoph hellwig 48 100.00% 1 100.00%
Total 48 100.00% 1 100.00%

static DEVICE_ATTR(device_busy, S_IRUGO, sdev_show_device_busy, NULL);


static ssize_t

sdev_show_device_blocked(struct device *dev, struct device_attribute *attr,
		char *buf)
{
	struct scsi_device *sdev = to_scsi_device(dev);
	return snprintf(buf, 20, "%d\n", atomic_read(&sdev->device_blocked));
}
Contributors
Person Tokens Prop Commits CommitProp
christoph hellwig christoph hellwig 48 100.00% 1 100.00%
Total 48 100.00% 1 100.00%

static DEVICE_ATTR(device_blocked, S_IRUGO, sdev_show_device_blocked, NULL);

/*
 * 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->request_queue->rq_timeout / HZ);
}

Contributors
Person Tokens Prop Commits CommitProp
brian king brian king 40 80.00% 1 20.00%
yani ioannou yani ioannou 5 10.00% 1 20.00%
jens axboe jens axboe 3 6.00% 1 20.00%
patrick mansfield patrick mansfield 1 2.00% 1 20.00%
alex tomas alex tomas 1 2.00% 1 20.00%
Total 50 100.00% 5 100.00%


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);
	blk_queue_rq_timeout(sdev->request_queue, timeout * HZ);
	return count;
}
Contributors
Person Tokens Prop Commits CommitProp
brian king brian king 30 47.62% 1 16.67%
alex tomas alex tomas 21 33.33% 1 16.67%
jens axboe jens axboe 5 7.94% 1 16.67%
yani ioannou yani ioannou 5 7.94% 1 16.67%
patrick mansfield patrick mansfield 1 1.59% 1 16.67%
christoph hellwig christoph hellwig 1 1.59% 1 16.67%
Total 63 100.00% 6 100.00%

static DEVICE_ATTR(timeout, S_IRUGO | S_IWUSR, sdev_show_timeout, sdev_store_timeout);


static ssize_t

sdev_show_eh_timeout(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct scsi_device *sdev;
	sdev = to_scsi_device(dev);
	return snprintf(buf, 20, "%u\n", sdev->eh_timeout / HZ);
}

Contributors
Person Tokens Prop Commits CommitProp
martin k. petersen martin k. petersen 46 95.83% 1 50.00%
brian king brian king 2 4.17% 1 50.00%
Total 48 100.00% 2 100.00%


static ssize_t

sdev_store_eh_timeout(struct device *dev, struct device_attribute *attr,
		    const char *buf, size_t count)
{
	struct scsi_device *sdev;
	unsigned int eh_timeout;
	int err;

	if (!capable(CAP_SYS_ADMIN))
		return -EACCES;

	sdev = to_scsi_device(dev);
	err = kstrtouint(buf, 10, &eh_timeout);
	if (err)
		return err;
	sdev->eh_timeout = eh_timeout * HZ;

	return count;
}
Contributors
Person Tokens Prop Commits CommitProp
martin k. petersen martin k. petersen 85 100.00% 1 100.00%
Total 85 100.00% 1 100.00%

static DEVICE_ATTR(eh_timeout, S_IRUGO | S_IWUSR, sdev_show_eh_timeout, sdev_store_eh_timeout);


static ssize_t

store_rescan_field (struct device *dev, struct device_attribute *attr,
		    const char *buf, size_t count)
{
	scsi_rescan_device(dev);
	return count;
}
Contributors
Person Tokens Prop Commits CommitProp
patrick mochel patrick mochel 15 46.88% 1 25.00%
brian king brian king 10 31.25% 1 25.00%
yani ioannou yani ioannou 5 15.62% 1 25.00%
martin k. petersen martin k. petersen 2 6.25% 1 25.00%
Total 32 100.00% 4 100.00%

static DEVICE_ATTR(rescan, S_IWUSR, NULL, store_rescan_field);


static ssize_t

sdev_store_delete(struct device *dev, struct device_attribute *attr,
		  const char *buf, size_t count)
{
	if (device_remove_file_self(dev, attr))
		scsi_remove_device(to_scsi_device(dev));
	return count;
}Contributors
Person Tokens Prop Commits CommitProp
patrick mochel patrick mochel 15 34.09% 1 14.29%
tejun heo tejun heo 11 25.00% 1 14.29%
patrick mansfield patrick mansfield 8 18.18% 1 14.29%
yani ioannou yani ioannou 5 11.36% 1 14.29%
christoph hellwig christoph hellwig 3 6.82% 2 28.57%
alan stern alan stern 2 4.55% 1 14.29%
Total 44 100.00% 7 100.00%

;
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)
{
	int i;
	struct scsi_device *sdev = to_scsi_device(dev);
	enum scsi_device_state state = 0;

	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') {
			state = sdev_states[i].value;
			break;
		}
	}
	if (!state)
		return -EINVAL;

	if (scsi_device_set_state(sdev, state))
		return -EINVAL;
	return count;
}

Contributors
Person Tokens Prop Commits CommitProp
james bottomley james bottomley 131 95.62% 1 33.33%
yani ioannou yani ioannou 5 3.65% 1 33.33%
tobias klauser tobias klauser 1 0.73% 1 33.33%
Total 137 100.00% 3 100.00%


static ssize_t

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);

	if (!name)
		return -EINVAL;

	return snprintf(buf, 20, "%s\n", name);
}

Contributors
Person Tokens Prop Commits CommitProp
james bottomley james bottomley 58 92.06% 1 50.00%
yani ioannou yani ioannou 5 7.94% 1 50.00%
Total 63 100.00% 2 100.00%

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)
{
	struct scsi_device *sdev = to_scsi_device(dev);
	const char *name = "none";

	if (sdev->simple_tags)
		name = "simple";

	return snprintf(buf, 20, "%s\n", name);
}

Contributors
Person Tokens Prop Commits CommitProp
james bottomley james bottomley 54 91.53% 1 50.00%
yani ioannou yani ioannou 5 8.47% 1 50.00%
Total 59 100.00% 2 100.00%


static ssize_t

store_queue_type_field(struct device *dev, struct device_attribute *attr,
		       const char *buf, size_t count)
{
	struct scsi_device *sdev = to_scsi_device(dev);

	if (!sdev->tagged_supported)
		return -EINVAL;
		
	sdev_printk(KERN_INFO, sdev,
		    "ignoring write to deprecated queue_type attribute");
	return count;
}

Contributors
Person Tokens Prop Commits CommitProp
hannes reinecke hannes reinecke 54 94.74% 1 50.00%
christoph hellwig christoph hellwig 3 5.26% 1 50.00%
Total 57 100.00% 2 100.00%

static DEVICE_ATTR(queue_type, S_IRUGO | S_IWUSR, show_queue_type_field,
		   store_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,                        \
                 char *buf, loff_t off, size_t count)                   \
{                                                                       \
        struct device *dev = container_of(kobj, struct device, kobj);   \
        struct scsi_device *sdev = to_scsi_device(dev);                 \
        int ret;                                                        \
        if (!sdev->vpd_##_page)                                         \
                return -EINVAL;                                         \
        rcu_read_lock();                                                \
        ret = memory_read_from_buffer(buf, count, &off,                 \
                                      rcu_dereference(sdev->vpd_##_page), \
                                       sdev->vpd_##_page##_len);        \
        rcu_read_unlock();                                              \
        return ret;                                             \
}                                                                       \
static struct bin_attribute dev_attr_vpd_##_page = {            \
        .attr = {.name = __stringify(vpd_##_page), .mode = S_IRUGO },   \
        .size = 0,                                                      \
        .read = show_vpd_##_page,                                       \
};


sdev_vpd_pg_attr(pg83);

sdev_vpd_pg_attr(pg80);



static ssize_t show_inquiry(struct file *filep, struct kobject *kobj,
			    struct bin_attribute *bin_attr,
			    char *buf, loff_t off, size_t count)
{
	struct device *dev = container_of(kobj, struct device, kobj);
	struct scsi_device *sdev = to_scsi_device(dev);

	if (!sdev->inquiry)
		return -EINVAL;

	return memory_read_from_buffer(buf, count, &off, sdev->inquiry,
				       sdev->inquiry_len);
}

Contributors
Person Tokens Prop Commits CommitProp
johannes thumshirn johannes thumshirn 86 100.00% 1 100.00%
Total 86 100.00% 1 100.00%


static struct bin_attribute dev_attr_inquiry = {
	.attr = {
		.name = "inquiry",
		.mode = S_IRUGO,
        },
	.size = 0,
	.read = show_inquiry,
};


static ssize_t

show_iostat_counterbits(struct device *dev, struct device_attribute *attr,
			char *buf)
{
	return snprintf(buf, 20, "%d\n", (int)sizeof(atomic_t) * 8);
}

Contributors
Person Tokens Prop Commits CommitProp
james bottomley james bottomley 35 87.50% 2 66.67%
yani ioannou yani ioannou 5 12.50% 1 33.33%
Total 40 100.00% 3 100.00%

static DEVICE_ATTR(iocounterbits, S_IRUGO, show_iostat_counterbits, NULL);


#define show_sdev_iostat(field)						\
static ssize_t                                                          \
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);           \
        return snprintf(buf, 20, "0x%llx\n", count);                    \
}                                                                       \
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);


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);
}
Contributors
Person Tokens Prop Commits CommitProp
michael tokarev michael tokarev 47 100.00% 1 100.00%
Total 47 100.00% 1 100.00%

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)
DECLARE_EVT(inquiry_change_reported, INQUIRY_CHANGE_REPORTED)
DECLARE_EVT(capacity_change_reported, CAPACITY_CHANGE_REPORTED)
DECLARE_EVT(soft_threshold_reached, SOFT_THRESHOLD_REACHED_REPORTED)
DECLARE_EVT(mode_parameter_change_reported, MODE_PARAMETER_CHANGE_REPORTED)
DECLARE_EVT(lun_change_reported, LUN_CHANGE_REPORTED)


static ssize_t

sdev_store_queue_depth(struct device *dev, struct device_attribute *attr,
		       const char *buf, size_t count)
{
	int depth, retval;
	struct scsi_device *sdev = to_scsi_device(dev);
	struct scsi_host_template *sht = sdev->host->hostt;

	if (!sht->change_queue_depth)
		return -EINVAL;

	depth = simple_strtoul(buf, NULL, 0);

	if (depth < 1 || depth > sdev->host->can_queue)
		return -EINVAL;

	retval = sht->change_queue_depth(sdev, depth);
	if (retval < 0)
		return retval;

	sdev->max_queue_depth = sdev->queue_depth;

	return count;
}
Contributors
Person Tokens Prop Commits CommitProp
james bottomley james bottomley 91 75.21% 2 22.22%
hannes reinecke hannes reinecke 9 7.44% 1 11.11%
vasu dev vasu dev 8 6.61% 1 11.11%
christoph hellwig christoph hellwig 6 4.96% 2 22.22%
yani ioannou yani ioannou 3 2.48% 1 11.11%
jens axboe jens axboe 3 2.48% 1 11.11%
patrick mansfield patrick mansfield 1 0.83% 1 11.11%
Total 121 100.00% 9 100.00%

sdev_show_function(queue_depth, "%d\n");

static DEVICE_ATTR(queue_depth, S_IRUGO | S_IWUSR, sdev_show_queue_depth,
		   sdev_store_queue_depth);


static ssize_t

sdev_show_wwid(struct device *dev, struct device_attribute *attr,
		    char *buf)
{
	struct scsi_device *sdev = to_scsi_device(dev);
	ssize_t count;

	count = scsi_vpd_lun_id(sdev, buf, PAGE_SIZE);
	if (count > 0) {
		buf[count] = '\n';
		count++;
	}
	return count;
}
Contributors
Person Tokens Prop Commits CommitProp
hannes reinecke hannes reinecke 65 100.00% 1 100.00%
Total 65 100.00% 1 100.00%

static DEVICE_ATTR(wwid, S_IRUGO, sdev_show_wwid, NULL);

#ifdef CONFIG_SCSI_DH

static ssize_t

sdev_show_dh_state(struct device *dev, struct device_attribute *attr,
		   char *buf)
{
	struct scsi_device *sdev = to_scsi_device(dev);

	if (!sdev->handler)
		return snprintf(buf, 20, "detached\n");

	return snprintf(buf, 20, "%s\n", sdev->handler->name);
}

Contributors
Person Tokens Prop Commits CommitProp
hannes reinecke hannes reinecke 63 100.00% 1 100.00%
Total 63 100.00% 1 100.00%


static ssize_t

sdev_store_dh_state(struct device *dev, struct device_attribute *attr,
		    const char *buf, size_t count)
{
	struct scsi_device *sdev = to_scsi_device(dev);
	int err = -EINVAL;

	if (sdev->sdev_state == SDEV_CANCEL ||
	    sdev->sdev_state == SDEV_DEL)
		return -ENODEV;

	if (!sdev->handler) {
		/*
                 * Attach to a device handler
                 */
		err = scsi_dh_attach(sdev->request_queue, buf);
	} else if (!strncmp(buf, "activate", 8)) {
		/*
                 * Activate a device handler
                 */
		if (sdev->handler->activate)
			err = sdev->handler->activate(sdev, NULL, NULL);
		else
			err = 0;
	} else if (!strncmp(buf, "detach", 6)) {
		/*
                 * Detach from a device handler
                 */
		sdev_printk(KERN_WARNING, sdev,
			    "can't detach handler %s.\n",
			    sdev->handler->name);
		err = -EINVAL;
	}

	return err < 0 ? err : count;
}

Contributors
Person Tokens Prop Commits CommitProp
hannes reinecke hannes reinecke 168 100.00% 1 100.00%
Total 168 100.00% 1 100.00%

static DEVICE_ATTR(dh_state, S_IRUGO | S_IWUSR, sdev_show_dh_state,
		   sdev_store_dh_state);


static ssize_t

sdev_show_access_state(struct device *dev,
		       struct device_attribute *attr,
		       char *buf)
{
	struct scsi_device *sdev = to_scsi_device(dev);
	unsigned char access_state;
	const char *access_state_name;

	if (!sdev->handler)
		return -EINVAL;

	access_state = (sdev->access_state & SCSI_ACCESS_STATE_MASK);
	access_state_name = scsi_access_state_name(access_state);

	return sprintf(buf, "%s\n",
		       access_state_name ? access_state_name : "unknown");
}
Contributors
Person Tokens Prop Commits CommitProp
hannes reinecke hannes reinecke 81 100.00% 1 100.00%
Total 81 100.00% 1 100.00%

static DEVICE_ATTR(access_state, S_IRUGO, sdev_show_access_state, NULL);


static ssize_t

sdev_show_preferred_path(struct device *dev,
			 struct device_attribute *attr,
			 char *buf)
{
	struct scsi_device *sdev = to_scsi_device(dev);

	if (!sdev->handler)
		return -EINVAL;

	if (sdev->access_state & SCSI_ACCESS_STATE_PREFERRED)
		return sprintf(buf, "1\n");
	else
		return sprintf(buf, "0\n");
}
Contributors
Person Tokens Prop Commits CommitProp
hannes reinecke hannes reinecke 66 100.00% 1 100.00%
Total 66 100.00% 1 100.00%

static DEVICE_ATTR(preferred_path, S_IRUGO, sdev_show_preferred_path, NULL);
#endif


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));
}

Contributors
Person Tokens Prop Commits CommitProp
vasu dev vasu dev 47 95.92% 1 50.00%
james bottomley james bottomley 2 4.08% 1 50.00%
Total 49 100.00% 2 100.00%


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 int period;

	if (kstrtouint(buf, 10, &period))
		return -EINVAL;

	sdev->queue_ramp_up_period = msecs_to_jiffies(period);
	return count;
}

Contributors
Person Tokens Prop Commits CommitProp
vasu dev vasu dev 63 95.45% 1 33.33%
daniel walter daniel walter 2 3.03% 1 33.33%
peter oberparleiter peter oberparleiter 1 1.52% 1 33.33%
Total 66 100.00% 3 100.00%

static DEVICE_ATTR(queue_ramp_up_period, S_IRUGO | S_IWUSR,
		   sdev_show_queue_ramp_up_period,
		   sdev_store_queue_ramp_up_period);



static umode_t scsi_sdev_attr_is_visible(struct kobject *kobj,
					 struct attribute *attr, int i)
{
	struct device *dev = container_of(kobj, struct device, kobj);
	struct scsi_device *sdev = to_scsi_device(dev);


	if (attr == &dev_attr_queue_depth.attr &&
	    !sdev->host->hostt->change_queue_depth)
		return S_IRUGO;

	if (attr == &dev_attr_queue_ramp_up_period.attr &&
	    !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;
}

Contributors
Person Tokens Prop Commits CommitProp
hannes reinecke hannes reinecke 82 63.08% 2 40.00%
james bottomley james bottomley 43 33.08% 1 20.00%
yani ioannou yani ioannou 4 3.08% 1 20.00%
vasu dev vasu dev 1 0.77% 1 20.00%
Total 130 100.00% 5 100.00%



static umode_t scsi_sdev_bin_attr_is_visible(struct kobject *kobj,
					     struct bin_attribute *attr, int i)
{
	struct device *dev = container_of(kobj, struct device, kobj);
	struct scsi_device *sdev = to_scsi_device(dev);


	if (attr == &dev_attr_vpd_pg80 && !sdev->vpd_pg80)
		return 0;

	if (attr == &dev_attr_vpd_pg83 && !sdev->vpd_pg83)
		return 0;

	return S_IRUGO;
}

Contributors
Person Tokens Prop Commits CommitProp
hannes reinecke hannes reinecke 77 100.00% 2 100.00%
Total 77 100.00% 2 100.00%

/* Default template for device attributes.  May NOT be modified */

static struct attribute *scsi_sdev_attrs[] = {
	&dev_attr_device_blocked.attr,
	&dev_attr_type.attr,
	&dev_attr_scsi_level.attr,
	&dev_attr_device_busy.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_eh_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,
	&dev_attr_queue_depth.attr,
	&dev_attr_queue_type.attr,
	&dev_attr_wwid.attr,
#ifdef CONFIG_SCSI_DH
	&dev_attr_dh_state.attr,
	&dev_attr_access_state.attr,
	&dev_attr_preferred_path.attr,
#endif
	&dev_attr_queue_ramp_up_period.attr,
	REF_EVT(media_change),
	REF_EVT(inquiry_change_reported),
	REF_EVT(capacity_change_reported),
	REF_EVT(soft_threshold_reached),
	REF_EVT(mode_parameter_change_reported),
	REF_EVT(lun_change_reported),
	NULL
};


static struct bin_attribute *scsi_sdev_bin_attrs[] = {
	&dev_attr_vpd_pg83,
	&dev_attr_vpd_pg80,
	&dev_attr_inquiry,
	NULL
};

static struct attribute_group scsi_sdev_attr_group = {
	.attrs =	scsi_sdev_attrs,
	.bin_attrs =	scsi_sdev_bin_attrs,
	.is_visible =	scsi_sdev_attr_is_visible,
	.is_bin_visible = scsi_sdev_bin_attr_is_visible,
};


static const struct attribute_group *scsi_sdev_attr_groups[] = {
	&scsi_sdev_attr_group,
	NULL
};



static int scsi_target_add(struct scsi_target *starget)
{
	int error;

	if (starget->state != STARGET_CREATED)
		return 0;

	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 0;
}

Contributors
Person Tokens Prop Commits CommitProp
james bottomley james bottomley 73 75.26% 1 50.00%
alan stern alan stern 24 24.74% 1 50.00%
Total 97 100.00% 2 100.00%

/**
 * scsi_sysfs_add_sdev - add scsi device to sysfs
 * @sdev:       scsi_device to add
 *
 * Return value:
 *      0 on Success / non-zero on Failure
 **/


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;

	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);

	scsi_autopm_get_device(sdev);

	error = scsi_dh_add_device(sdev);
	if (error)
		/*
                 * device_handler is optional, so any error can be ignored
                 */
		sdev_printk(KERN_INFO, sdev,
				"failed to add device handler: %d\n", error);

	error = device_add(&sdev->sdev_gendev);
	if (error) {
		sdev_printk(KERN_INFO, sdev,
				"failed to add device: %d\n", error);
		scsi_dh_remove_device(sdev);
		return error;
	}

	device_enable_async_suspend(&sdev->sdev_dev);
	error = device_add(&sdev->sdev_dev);
	if (error) {
		sdev_printk(KERN_INFO, sdev,
				"failed to add class device: %d\n", error);
		scsi_dh_remove_device(sdev);
		device_del(&sdev->sdev_gendev);
		return error;
	}
	transport_add_device(&sdev->sdev_gendev);
	sdev->is_visible = 1;

	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 = device_create_file(&sdev->sdev_gendev,
					sdev->host->hostt->sdev_attrs[i]);
			if (error)
				return error;
		}
	}

	scsi_autopm_put_device(sdev);
	return error;
}

Contributors
Person Tokens Prop Commits CommitProp
james bottomley james bottomley 119 34.59% 8 32.00%
alan stern alan stern 62 18.02% 3 12.00%
christoph hellwig christoph hellwig 58 16.86% 4 16.00%
mike anderson mike anderson 43 12.50% 3 12.00%
hannes reinecke hannes reinecke 18 5.23% 1 4.00%
patrick mansfield patrick mansfield 17 4.94% 1 4.00%
rafael j. wysocki rafael j. wysocki 16 4.65% 1 4.00%
subhash jadavani subhash jadavani 5 1.45% 1 4.00%
tony jones tony jones 2 0.58% 1 4.00%
kay sievers kay sievers 2 0.58% 1 4.00%
fujita tomonori fujita tomonori 2 0.58% 1 4.00%
Total 344 100.00% 25 100.00%



void __scsi_remove_device(struct scsi_device *sdev)
{
	struct device *dev = &sdev->sdev_gendev;

	/*
         * This cleanup path is not reentrant and while it is impossible
         * to get a new reference with scsi_device_get() someone can still
         * hold a previously acquired one.
         */
	if (sdev->sdev_state == SDEV_DEL)
		return;

	if (sdev->is_visible) {
		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);
		scsi_dh_remove_device(sdev);
		device_del(dev);
	} else
		put_device(&sdev->sdev_dev);

	/*
         * Stop accepting new requests and wait until all queuecommand() and
         * scsi_run_queue() invocations have finished before tearing down the
         * device.
         */
	scsi_device_set_state(sdev, SDEV_DEL);
	blk_cleanup_queue(sdev->request_queue);
	cancel_work_sync(&sdev->requeue_work);

	if (sdev->host->hostt->slave_destroy)
		sdev->host->hostt->slave_destroy(sdev);
	transport_destroy_device(dev);

	/*
         * Paired with the kref_get() in scsi_sysfs_initialize().  We have
         * remoed sysfs visibility from the device, so make the target
         * invisible if this was the last device underneath it.
         */
	scsi_target_reap(scsi_target(sdev));

	put_device(dev);
}

Contributors
Person Tokens Prop Commits CommitProp
james bottomley james bottomley 60 39.47% 8 42.11%
christoph hellwig christoph hellwig 35 23.03% 4 21.05%
bart van assche bart van assche 30 19.74% 2 10.53%
mike anderson mike anderson 12 7.89% 2 10.53%
vitaly kuznetsov vitaly kuznetsov 10 6.58% 1 5.26%
alan stern alan stern 3 1.97% 1 5.26%
tony jones tony jones 2 1.32% 1 5.26%
Total 152 100.00% 19 100.00%

/**
 * scsi_remove_device - unregister a device from the scsi bus
 * @sdev:       scsi_device to unregister
 **/


void scsi_remove_device(struct scsi_device *sdev)
{
	struct Scsi_Host *shost = sdev->host;

	mutex_lock(&shost->scan_mutex);
	__scsi_remove_device(sdev);
	mutex_unlock(&shost->scan_mutex);
}
Contributors
Person Tokens Prop Commits CommitProp
alan stern alan stern 31 77.50% 2 40.00%
brian king brian king 6 15.00% 1 20.00%
arjan van de ven arjan van de ven 2 5.00% 1 20.00%
christoph hellwig christoph hellwig 1 2.50% 1 20.00%
Total 40 100.00% 5 100.00%


EXPORT_SYMBOL(scsi_remove_device);



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;

	spin_lock_irqsave(shost->host_lock, flags);
 restart:
	list_for_each_entry(sdev, &shost->__devices, siblings) {
		if (sdev->channel != starget->channel ||
		    sdev->id != starget->id ||
		    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;
	}
	spin_unlock_irqrestore(shost->host_lock, flags);
}

Contributors
Person Tokens Prop Commits CommitProp
james bottomley james bottomley 92 77.31% 1 11.11%
alan stern alan stern 8 6.72% 1 11.11%
christof schmitt christof schmitt 8 6.72% 1 11.11%
christoph hellwig christoph hellwig 7 5.88% 2 22.22%
adrian bunk adrian bunk 2 1.68% 2 22.22%
patrick mochel patrick mochel 1 0.84% 1 11.11%
andrew vasquez andrew vasquez 1 0.84% 1 11.11%
Total 119 100.00% 9 100.00%

/**
 * scsi_remove_target - try to remove a target and all its devices
 * @dev: generic starget or parent of generic stargets to be removed
 *
 * Note: This is slightly racy.  It is possible that if the user
 * requests the addition of another device then the target won't be
 * removed.
 */


void scsi_remove_target(struct device *dev)
{
	struct Scsi_Host *shost = dev_to_shost(dev->parent);
	struct scsi_target *starget;
	unsigned long flags;

restart:
	spin_lock_irqsave(shost->host_lock, flags);
	list_for_each_entry(starget, &shost->__targets, siblings) {
		if (starget->state == STARGET_DEL ||
		    starget->state == STARGET_REMOVE)
			continue;
		if (starget->dev.parent == dev || &starget->dev == dev) {
			kref_get(&starget->reap_ref);
			starget->state = STARGET_REMOVE;
			spin_unlock_irqrestore(shost->host_lock, flags);
			__scsi_remove_target(starget);
			scsi_target_reap(starget);
			goto restart;
		}
	}
	spin_unlock_irqrestore(shost->host_lock, flags);
}
Contributors
Person Tokens Prop Commits CommitProp
dan williams dan williams 83 63.36% 2 25.00%
andrew vasquez andrew vasquez 23 17.56% 1 12.50%
johannes thumshirn johannes thumshirn 10 7.63% 1 12.50%
james bottomley james bottomley 8 6.11% 3 37.50%
christoph hellwig christoph hellwig 7 5.34% 1 12.50%
Total 131 100.00% 8 100.00%


EXPORT_SYMBOL(scsi_remove_target);



int scsi_register_driver(struct device_driver *drv)
{
	drv->bus = &scsi_bus_type;

	return driver_register(drv);
}
Contributors
Person Tokens Prop Commits CommitProp
james bottomley james bottomley 23 100.00% 1 100.00%
Total 23 100.00% 1 100.00%


EXPORT_SYMBOL(scsi_register_driver);



int scsi_register_interface(struct class_interface *intf)
{
	intf->class = &sdev_class;

	return class_interface_register(intf);
}
Contributors
Person Tokens Prop Commits CommitProp
christoph hellwig christoph hellwig 23 100.00% 1 100.00%
Total 23 100.00% 1 100.00%


EXPORT_SYMBOL(scsi_register_interface);

/**
 * scsi_sysfs_add_host - add scsi host to subsystem
 * @shost:     scsi host struct to add to subsystem
 **/


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 = device_create_file(&shost->shost_dev,
					shost->hostt->shost_attrs[i]);
			if (error)
				return error;
		}
	}

	transport_register_device(&shost->shost_gendev);
	transport_configure_device(&shost->shost_gendev);
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
mike anderson mike anderson 42 46.15% 2 20.00%
james bottomley james bottomley 31 34.07% 4 40.00%
christoph hellwig christoph hellwig 15 16.48% 2 20.00%
hannes reinecke hannes reinecke 2 2.20% 1 10.00%
tony jones tony jones 1 1.10% 1 10.00%
Total 91 100.00% 10 100.00%


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;
	struct Scsi_Host *shost = sdev->host;
	struct scsi_target  *starget = sdev->sdev_target;

	device_initialize(&sdev->sdev_gendev);
	sdev->sdev_gendev.bus = &scsi_bus_type;
	sdev->sdev_gendev.type = &scsi_dev_type;
	dev_set_name(&sdev->sdev_gendev, "%d:%d:%d:%llu",
		     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:%llu",
		     sdev->host->host_no, sdev->channel, sdev->id, sdev->lun);
	/*
         * Get a default scsi_level from the target (derived from sibling
         * devices).  This is the best we can do for guessing how to set
         * sdev->lun_in_cdb for the initial INQUIRY command.  For LUN 0 the
         * setting doesn't matter, because all the bits are zero anyway.
         * But it does matter for higher LUNs.
         */
	sdev->scsi_level = starget->scsi_level;
	if (sdev->scsi_level <= SCSI_2 &&
			sdev->scsi_level != SCSI_UNKNOWN &&
			!shost->no_scsi2_lun_in_cdb)
		sdev->lun_in_cdb = 1;

	transport_setup_device(&sdev->sdev_gendev);
	spin_lock_irqsave(shost->host_lock, flags);
	list_add_tail(&sdev->same_target_siblings, &starget->devices);
	list_add_tail(&sdev->siblings, &shost->__devices);
	spin_unlock_irqrestore(shost->host_lock, flags);
	/*
         * device can now only be removed via __scsi_remove_device() so hold
         * the target.  Target will be held in CREATED state until something
         * beneath it becomes visible (in which case it moves to RUNNING)
         */
	kref_get(&starget->reap_ref);
}

Contributors
Person Tokens Prop Commits CommitProp
james bottomley james bottomley 196 81.67% 7 53.85%
alan stern alan stern 29 12.08% 2 15.38%
kay sievers kay sievers 7 2.92% 2 15.38%
tony jones tony jones 6 2.50% 1 7.69%
hannes reinecke hannes reinecke 2 0.83% 1 7.69%
Total 240 100.00% 13 100.00%



int scsi_is_sdev_device(const struct device *dev)
{
	return dev->type == &scsi_dev_type;
}
Contributors
Person Tokens Prop Commits CommitProp
james bottomley james bottomley 16 84.21% 2 66.67%
kay sievers kay sievers 3 15.79% 1 33.33%
Total 19 100.00% 3 100.00%


EXPORT_SYMBOL(scsi_is_sdev_device);

/* A blank transport template that is used in drivers that don't
 * yet implement Transport Attributes */

struct scsi_transport_template blank_transport_template = { { { {NULL, }, }, }, };
Overall Contributors
Person Tokens Prop Commits CommitProp
james bottomley james bottomley 1405 22.59% 37 24.03%
hannes reinecke hannes reinecke 1384 22.25% 15 9.74%
mike anderson mike anderson 617 9.92% 6 3.90%
christoph hellwig christoph hellwig 493 7.93% 20 12.99%
patrick mansfield patrick mansfield 369 5.93% 4 2.60%
fujita tomonori fujita tomonori 196 3.15% 2 1.30%
martin k. petersen martin k. petersen 183 2.94% 3 1.95%
alan stern alan stern 172 2.77% 11 7.14%
vikas chaudhary vikas chaudhary 152 2.44% 1 0.65%
vasu dev vasu dev 131 2.11% 1 0.65%
johannes thumshirn johannes thumshirn 131 2.11% 2 1.30%
michael tokarev michael tokarev 99 1.59% 1 0.65%
jeff garzik jeff garzik 96 1.54% 1 0.65%
brian king brian king 95 1.53% 2 1.30%
ren mingxin ren mingxin 86 1.38% 1 0.65%
dan williams dan williams 83 1.33% 2 1.30%
tony jones tony jones 81 1.30% 1 0.65%
yani ioannou yani ioannou 47 0.76% 1 0.65%
kurt garloff kurt garloff 45 0.72% 2 1.30%
patrick mochel patrick mochel 43 0.69% 2 1.30%
kay sievers kay sievers 38 0.61% 4 2.60%
bart van assche bart van assche 38 0.61% 3 1.95%
ewan d. milne ewan d. milne 30 0.48% 1 0.65%
alex tomas alex tomas 29 0.47% 1 0.65%
andrew vasquez andrew vasquez 25 0.40% 1 0.65%
david howells david howells 20 0.32% 1 0.65%
adrian bunk adrian bunk 19 0.31% 3 1.95%
rafael j. wysocki rafael j. wysocki 17 0.27% 2 1.30%
jens axboe jens axboe 15 0.24% 3 1.95%
tejun heo tejun heo 14 0.23% 2 1.30%
vitaly kuznetsov vitaly kuznetsov 10 0.16% 1 0.65%
christof schmitt christof schmitt 8 0.13% 1 0.65%
james smart james smart 6 0.10% 1 0.65%
mike christie mike christie 6 0.10% 1 0.65%
subhash jadavani subhash jadavani 5 0.08% 1 0.65%
jun'ichi nomura jun'ichi nomura 5 0.08% 1 0.65%
chandra seetharaman chandra seetharaman 5 0.08% 1 0.65%
arjan van de ven arjan van de ven 4 0.06% 2 1.30%
tobias klauser tobias klauser 4 0.06% 1 0.65%
sasha levin sasha levin 4 0.06% 1 0.65%
daniel walter daniel walter 2 0.03% 1 0.65%
tomohiro kusumi tomohiro kusumi 2 0.03% 1 0.65%
randy dunlap randy dunlap 2 0.03% 2 1.30%
david brownell david brownell 1 0.02% 1 0.65%
peter oberparleiter peter oberparleiter 1 0.02% 1 0.65%
greg kroah-hartman greg kroah-hartman 1 0.02% 1 0.65%
Total 6219 100.00% 154 100.00%
  Directory: drivers/scsi

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
	Person	Tokens	Prop	Commits	CommitProp
james bottomley	james bottomley	63	98.44%	1	50.00%
tobias klauser	tobias klauser	1	1.56%	1	50.00%
	Total	64	100.00%	2	100.00%
cregit-Linux how code gets into the kernel

Release 4.7 drivers/scsi/scsi_sysfs.c

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