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-rw-r--r--include/scsi/libsrp.h78
-rw-r--r--include/scsi/scsi.h5
-rw-r--r--include/scsi/scsi_cmnd.h5
-rw-r--r--include/scsi/scsi_device.h40
-rw-r--r--include/scsi/scsi_devinfo.h5
-rw-r--r--include/scsi/scsi_driver.h3
-rw-r--r--include/scsi/scsi_host.h68
-rw-r--r--include/scsi/scsi_tcq.h28
-rw-r--r--include/scsi/scsi_tgt.h21
-rw-r--r--include/scsi/scsi_tgt_if.h108
-rw-r--r--include/scsi/scsi_transport.h2
-rw-r--r--include/scsi/scsi_transport_fc.h4
-rw-r--r--include/scsi/sg.h92
13 files changed, 111 insertions, 348 deletions
diff --git a/include/scsi/libsrp.h b/include/scsi/libsrp.h
deleted file mode 100644
index f4105c91af53..000000000000
--- a/include/scsi/libsrp.h
+++ /dev/null
@@ -1,78 +0,0 @@
-#ifndef __LIBSRP_H__
-#define __LIBSRP_H__
-
-#include <linux/list.h>
-#include <linux/kfifo.h>
-#include <scsi/scsi_cmnd.h>
-#include <scsi/scsi_host.h>
-#include <scsi/srp.h>
-
-enum iue_flags {
- V_DIOVER,
- V_WRITE,
- V_LINKED,
- V_FLYING,
-};
-
-struct srp_buf {
- dma_addr_t dma;
- void *buf;
-};
-
-struct srp_queue {
- void *pool;
- void *items;
- struct kfifo queue;
- spinlock_t lock;
-};
-
-struct srp_target {
- struct Scsi_Host *shost;
- struct device *dev;
-
- spinlock_t lock;
- struct list_head cmd_queue;
-
- size_t srp_iu_size;
- struct srp_queue iu_queue;
- size_t rx_ring_size;
- struct srp_buf **rx_ring;
-
- void *ldata;
-};
-
-struct iu_entry {
- struct srp_target *target;
-
- struct list_head ilist;
- dma_addr_t remote_token;
- unsigned long flags;
-
- struct srp_buf *sbuf;
-};
-
-typedef int (srp_rdma_t)(struct scsi_cmnd *, struct scatterlist *, int,
- struct srp_direct_buf *, int,
- enum dma_data_direction, unsigned int);
-extern int srp_target_alloc(struct srp_target *, struct device *, size_t, size_t);
-extern void srp_target_free(struct srp_target *);
-
-extern struct iu_entry *srp_iu_get(struct srp_target *);
-extern void srp_iu_put(struct iu_entry *);
-
-extern int srp_cmd_queue(struct Scsi_Host *, struct srp_cmd *, void *, u64, u64);
-extern int srp_transfer_data(struct scsi_cmnd *, struct srp_cmd *,
- srp_rdma_t, int, int);
-
-
-static inline struct srp_target *host_to_srp_target(struct Scsi_Host *host)
-{
- return (struct srp_target *) host->hostdata;
-}
-
-static inline int srp_cmd_direction(struct srp_cmd *cmd)
-{
- return (cmd->buf_fmt >> 4) ? DMA_TO_DEVICE : DMA_FROM_DEVICE;
-}
-
-#endif
diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h
index 0a4edfe8af51..261e708010da 100644
--- a/include/scsi/scsi.h
+++ b/include/scsi/scsi.h
@@ -31,7 +31,7 @@ enum scsi_timeouts {
* Like SCSI_MAX_SG_SEGMENTS, but for archs that have sg chaining. This limit
* is totally arbitrary, a setting of 2048 will get you at least 8mb ios.
*/
-#ifdef ARCH_HAS_SG_CHAIN
+#ifdef CONFIG_ARCH_HAS_SG_CHAIN
#define SCSI_MAX_SG_CHAIN_SEGMENTS 2048
#else
#define SCSI_MAX_SG_CHAIN_SEGMENTS SCSI_MAX_SG_SEGMENTS
@@ -332,6 +332,7 @@ static inline int scsi_status_is_good(int status)
#define TYPE_ENCLOSURE 0x0d /* Enclosure Services Device */
#define TYPE_RBC 0x0e
#define TYPE_OSD 0x11
+#define TYPE_ZBC 0x14
#define TYPE_NO_LUN 0x7f
/* SCSI protocols; these are taken from SPC-3 section 7.5 */
@@ -385,7 +386,7 @@ struct scsi_lun {
#define SCSI_W_LUN_ACCESS_CONTROL (SCSI_W_LUN_BASE + 2)
#define SCSI_W_LUN_TARGET_LOG_PAGE (SCSI_W_LUN_BASE + 3)
-static inline int scsi_is_wlun(unsigned int lun)
+static inline int scsi_is_wlun(u64 lun)
{
return (lun & 0xff00) == SCSI_W_LUN_BASE;
}
diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h
index 42ed789ebafc..73f349044941 100644
--- a/include/scsi/scsi_cmnd.h
+++ b/include/scsi/scsi_cmnd.h
@@ -150,9 +150,7 @@ static inline struct scsi_driver *scsi_cmd_to_driver(struct scsi_cmnd *cmd)
}
extern struct scsi_cmnd *scsi_get_command(struct scsi_device *, gfp_t);
-extern struct scsi_cmnd *__scsi_get_command(struct Scsi_Host *, gfp_t);
extern void scsi_put_command(struct scsi_cmnd *);
-extern void __scsi_put_command(struct Scsi_Host *, struct scsi_cmnd *);
extern void scsi_finish_command(struct scsi_cmnd *cmd);
extern void *scsi_kmap_atomic_sg(struct scatterlist *sg, int sg_count,
@@ -160,7 +158,6 @@ extern void *scsi_kmap_atomic_sg(struct scatterlist *sg, int sg_count,
extern void scsi_kunmap_atomic_sg(void *virt);
extern int scsi_init_io(struct scsi_cmnd *cmd, gfp_t gfp_mask);
-extern void scsi_release_buffers(struct scsi_cmnd *cmd);
extern int scsi_dma_map(struct scsi_cmnd *cmd);
extern void scsi_dma_unmap(struct scsi_cmnd *cmd);
@@ -318,7 +315,7 @@ static inline void set_driver_byte(struct scsi_cmnd *cmd, char status)
static inline unsigned scsi_transfer_length(struct scsi_cmnd *scmd)
{
- unsigned int xfer_len = blk_rq_bytes(scmd->request);
+ unsigned int xfer_len = scsi_out(scmd)->length;
unsigned int prot_op = scsi_get_prot_op(scmd);
unsigned int sector_size = scmd->device->sector_size;
diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h
index 5853c913d2b0..1a0d1842962e 100644
--- a/include/scsi/scsi_device.h
+++ b/include/scsi/scsi_device.h
@@ -81,9 +81,9 @@ struct scsi_device {
struct list_head siblings; /* list of all devices on this host */
struct list_head same_target_siblings; /* just the devices sharing same target id */
- /* this is now protected by the request_queue->queue_lock */
- unsigned int device_busy; /* commands actually active on
- * low-level. protected by queue_lock. */
+ atomic_t device_busy; /* commands actually active on LLDD */
+ atomic_t device_blocked; /* Device returned QUEUE_FULL. */
+
spinlock_t list_lock;
struct list_head cmd_list; /* queue of in use SCSI Command structures */
struct list_head starved_entry;
@@ -98,8 +98,8 @@ struct scsi_device {
unsigned long last_queue_ramp_up; /* last queue ramp up time */
- unsigned int id, lun, channel;
-
+ unsigned int id, channel;
+ u64 lun;
unsigned int manufacturer; /* Manufacturer of device, for using
* vendor-specific cmd's */
unsigned sector_size; /* size in bytes */
@@ -127,7 +127,6 @@ struct scsi_device {
* pass settings from slave_alloc to scsi
* core. */
unsigned int eh_timeout; /* Error handling timeout */
- unsigned writeable:1;
unsigned removable:1;
unsigned changed:1; /* Data invalid due to media change */
unsigned busy:1; /* Used to prevent races */
@@ -155,6 +154,7 @@ struct scsi_device {
unsigned skip_ms_page_8:1; /* do not use MODE SENSE page 0x08 */
unsigned skip_ms_page_3f:1; /* do not use MODE SENSE page 0x3f */
unsigned skip_vpd_pages:1; /* do not read VPD pages */
+ unsigned try_vpd_pages:1; /* attempt to read VPD pages */
unsigned use_192_bytes_for_3f:1; /* ask for 192 bytes from page 0x3f */
unsigned no_start_on_add:1; /* do not issue start on add */
unsigned allow_restart:1; /* issue START_UNIT in error handler */
@@ -173,6 +173,7 @@ struct scsi_device {
unsigned is_visible:1; /* is the device visible in sysfs */
unsigned wce_default_on:1; /* Cache is ON by default */
unsigned no_dif:1; /* T10 PI (DIF) should be disabled */
+ unsigned broken_fua:1; /* Don't set FUA bit */
atomic_t disk_events_disable_depth; /* disable depth for disk events */
@@ -181,8 +182,6 @@ struct scsi_device {
struct list_head event_list; /* asserted events */
struct work_struct event_work;
- unsigned int device_blocked; /* Device returned QUEUE_FULL. */
-
unsigned int max_device_blocked; /* what device_blocked counts down from */
#define SCSI_DEFAULT_DEVICE_BLOCKED 3
@@ -290,14 +289,15 @@ struct scsi_target {
unsigned int expecting_lun_change:1; /* A device has reported
* a 3F/0E UA, other devices on
* the same target will also. */
- /* commands actually active on LLD. protected by host lock. */
- unsigned int target_busy;
+ /* commands actually active on LLD. */
+ atomic_t target_busy;
+ atomic_t target_blocked;
+
/*
* LLDs should set this in the slave_alloc host template callout.
* If set to zero then there is not limit.
*/
unsigned int can_queue;
- unsigned int target_blocked;
unsigned int max_target_blocked;
#define SCSI_DEFAULT_TARGET_BLOCKED 3
@@ -320,9 +320,9 @@ static inline struct scsi_target *scsi_target(struct scsi_device *sdev)
dev_printk(prefix, &(starget)->dev, fmt, ##a)
extern struct scsi_device *__scsi_add_device(struct Scsi_Host *,
- uint, uint, uint, void *hostdata);
+ uint, uint, u64, void *hostdata);
extern int scsi_add_device(struct Scsi_Host *host, uint channel,
- uint target, uint lun);
+ uint target, u64 lun);
extern int scsi_register_device_handler(struct scsi_device_handler *scsi_dh);
extern void scsi_remove_device(struct scsi_device *);
extern int scsi_unregister_device_handler(struct scsi_device_handler *scsi_dh);
@@ -331,13 +331,13 @@ void scsi_attach_vpd(struct scsi_device *sdev);
extern int scsi_device_get(struct scsi_device *);
extern void scsi_device_put(struct scsi_device *);
extern struct scsi_device *scsi_device_lookup(struct Scsi_Host *,
- uint, uint, uint);
+ uint, uint, u64);
extern struct scsi_device *__scsi_device_lookup(struct Scsi_Host *,
- uint, uint, uint);
+ uint, uint, u64);
extern struct scsi_device *scsi_device_lookup_by_target(struct scsi_target *,
- uint);
+ u64);
extern struct scsi_device *__scsi_device_lookup_by_target(struct scsi_target *,
- uint);
+ u64);
extern void starget_for_each_device(struct scsi_target *, void *,
void (*fn)(struct scsi_device *, void *));
extern void __starget_for_each_device(struct scsi_target *, void *,
@@ -410,13 +410,13 @@ extern void scsi_device_resume(struct scsi_device *sdev);
extern void scsi_target_quiesce(struct scsi_target *);
extern void scsi_target_resume(struct scsi_target *);
extern void scsi_scan_target(struct device *parent, unsigned int channel,
- unsigned int id, unsigned int lun, int rescan);
+ unsigned int id, u64 lun, int rescan);
extern void scsi_target_reap(struct scsi_target *);
extern void scsi_target_block(struct device *);
extern void scsi_target_unblock(struct device *, enum scsi_device_state);
extern void scsi_remove_target(struct device *);
-extern void int_to_scsilun(unsigned int, struct scsi_lun *);
-extern int scsilun_to_int(struct scsi_lun *);
+extern void int_to_scsilun(u64, struct scsi_lun *);
+extern u64 scsilun_to_int(struct scsi_lun *);
extern const char *scsi_device_state_name(enum scsi_device_state);
extern int scsi_is_sdev_device(const struct device *);
extern int scsi_is_target_device(const struct device *);
diff --git a/include/scsi/scsi_devinfo.h b/include/scsi/scsi_devinfo.h
index 447d2d7466fc..183eaab7c380 100644
--- a/include/scsi/scsi_devinfo.h
+++ b/include/scsi/scsi_devinfo.h
@@ -32,4 +32,9 @@
#define BLIST_ATTACH_PQ3 0x1000000 /* Scan: Attach to PQ3 devices */
#define BLIST_NO_DIF 0x2000000 /* Disable T10 PI (DIF) */
#define BLIST_SKIP_VPD_PAGES 0x4000000 /* Ignore SBC-3 VPD pages */
+#define BLIST_SCSI3LUN 0x8000000 /* Scan more than 256 LUNs
+ for sequential scan */
+#define BLIST_TRY_VPD_PAGES 0x10000000 /* Attempt to read VPD pages */
+#define BLIST_NO_RSOC 0x20000000 /* don't try to issue RSOC */
+
#endif
diff --git a/include/scsi/scsi_driver.h b/include/scsi/scsi_driver.h
index 36c4114ed9bc..c2b759809d8a 100644
--- a/include/scsi/scsi_driver.h
+++ b/include/scsi/scsi_driver.h
@@ -29,7 +29,4 @@ extern int scsi_register_interface(struct class_interface *);
#define scsi_unregister_interface(intf) \
class_interface_unregister(intf)
-int scsi_setup_blk_pc_cmnd(struct scsi_device *sdev, struct request *req);
-int scsi_setup_fs_cmnd(struct scsi_device *sdev, struct request *req);
-
#endif /* _SCSI_SCSI_DRIVER_H */
diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h
index 94844fc77b97..ba2034779961 100644
--- a/include/scsi/scsi_host.h
+++ b/include/scsi/scsi_host.h
@@ -7,6 +7,7 @@
#include <linux/workqueue.h>
#include <linux/mutex.h>
#include <linux/seq_file.h>
+#include <linux/blk-mq.h>
#include <scsi/scsi.h>
struct request_queue;
@@ -132,27 +133,6 @@ struct scsi_host_template {
int (* queuecommand)(struct Scsi_Host *, struct scsi_cmnd *);
/*
- * The transfer functions are used to queue a scsi command to
- * the LLD. When the driver is finished processing the command
- * the done callback is invoked.
- *
- * This is called to inform the LLD to transfer
- * scsi_bufflen(cmd) bytes. scsi_sg_count(cmd) speciefies the
- * number of scatterlist entried in the command and
- * scsi_sglist(cmd) returns the scatterlist.
- *
- * return values: see queuecommand
- *
- * If the LLD accepts the cmd, it should set the result to an
- * appropriate value when completed before calling the done function.
- *
- * STATUS: REQUIRED FOR TARGET DRIVERS
- */
- /* TODO: rename */
- int (* transfer_response)(struct scsi_cmnd *,
- void (*done)(struct scsi_cmnd *));
-
- /*
* This is an error handling strategy routine. You don't need to
* define one of these if you don't want to - there is a default
* routine that is present that should work in most cases. For those
@@ -408,7 +388,7 @@ struct scsi_host_template {
/*
* Set this if the host adapter has limitations beside segment count.
*/
- unsigned short max_sectors;
+ unsigned int max_sectors;
/*
* DMA scatter gather segment boundary limit. A segment crossing this
@@ -531,6 +511,9 @@ struct scsi_host_template {
*/
unsigned int cmd_size;
struct scsi_host_cmd_pool *cmd_pool;
+
+ /* temporary flag to disable blk-mq I/O path */
+ bool disable_blk_mq;
};
/*
@@ -601,15 +584,16 @@ struct Scsi_Host {
* Area to keep a shared tag map (if needed, will be
* NULL if not).
*/
- struct blk_queue_tag *bqt;
+ union {
+ struct blk_queue_tag *bqt;
+ struct blk_mq_tag_set tag_set;
+ };
- /*
- * The following two fields are protected with host_lock;
- * however, eh routines can safely access during eh processing
- * without acquiring the lock.
- */
- unsigned int host_busy; /* commands actually active on low-level */
- unsigned int host_failed; /* commands that failed. */
+ atomic_t host_busy; /* commands actually active on low-level */
+ atomic_t host_blocked;
+
+ unsigned int host_failed; /* commands that failed.
+ protected by host_lock */
unsigned int host_eh_scheduled; /* EH scheduled without command */
unsigned int host_no; /* Used for IOCTL_GET_IDLUN, /proc/scsi et al. */
@@ -623,11 +607,11 @@ struct Scsi_Host {
* These three parameters can be used to allow for wide scsi,
* and for host adapters that support multiple busses
* The first two should be set to 1 more than the actual max id
- * or lun (i.e. 8 for normal systems).
+ * or lun (e.g. 8 for SCSI parallel systems).
*/
- unsigned int max_id;
- unsigned int max_lun;
unsigned int max_channel;
+ unsigned int max_id;
+ u64 max_lun;
/*
* This is a unique identifier that must be assigned so that we
@@ -652,7 +636,7 @@ struct Scsi_Host {
short cmd_per_lun;
short unsigned int sg_tablesize;
short unsigned int sg_prot_tablesize;
- short unsigned int max_sectors;
+ unsigned int max_sectors;
unsigned long dma_boundary;
/*
* Used to assign serial numbers to the cmds.
@@ -695,6 +679,8 @@ struct Scsi_Host {
/* The controller does not support WRITE SAME */
unsigned no_write_same:1;
+ unsigned use_blk_mq:1;
+
/*
* Optional work queue to be utilized by the transport
*/
@@ -707,11 +693,6 @@ struct Scsi_Host {
struct workqueue_struct *tmf_work_q;
/*
- * Host has rejected a command because it was busy.
- */
- unsigned int host_blocked;
-
- /*
* Value host_blocked counts down from
*/
unsigned int max_host_blocked;
@@ -800,6 +781,13 @@ static inline int scsi_host_in_recovery(struct Scsi_Host *shost)
shost->tmf_in_progress;
}
+extern bool scsi_use_blk_mq;
+
+static inline bool shost_use_blk_mq(struct Scsi_Host *shost)
+{
+ return shost->use_blk_mq;
+}
+
extern int scsi_queue_work(struct Scsi_Host *, struct work_struct *);
extern void scsi_flush_work(struct Scsi_Host *);
@@ -816,8 +804,6 @@ extern struct Scsi_Host *scsi_host_lookup(unsigned short);
extern const char *scsi_host_state_name(enum scsi_host_state);
extern void scsi_cmd_get_serial(struct Scsi_Host *, struct scsi_cmnd *);
-extern u64 scsi_calculate_bounce_limit(struct Scsi_Host *);
-
static inline int __must_check scsi_add_host(struct Scsi_Host *host,
struct device *dev)
{
diff --git a/include/scsi/scsi_tcq.h b/include/scsi/scsi_tcq.h
index 81dd12edc38c..cdcc90b07ecb 100644
--- a/include/scsi/scsi_tcq.h
+++ b/include/scsi/scsi_tcq.h
@@ -67,7 +67,8 @@ static inline void scsi_activate_tcq(struct scsi_device *sdev, int depth)
if (!sdev->tagged_supported)
return;
- if (!blk_queue_tagged(sdev->request_queue))
+ if (!shost_use_blk_mq(sdev->host) &&
+ blk_queue_tagged(sdev->request_queue))
blk_queue_init_tags(sdev->request_queue, depth,
sdev->host->bqt);
@@ -80,7 +81,8 @@ static inline void scsi_activate_tcq(struct scsi_device *sdev, int depth)
**/
static inline void scsi_deactivate_tcq(struct scsi_device *sdev, int depth)
{
- if (blk_queue_tagged(sdev->request_queue))
+ if (!shost_use_blk_mq(sdev->host) &&
+ blk_queue_tagged(sdev->request_queue))
blk_queue_free_tags(sdev->request_queue);
scsi_adjust_queue_depth(sdev, 0, depth);
}
@@ -108,6 +110,15 @@ static inline int scsi_populate_tag_msg(struct scsi_cmnd *cmd, char *msg)
return 0;
}
+static inline struct scsi_cmnd *scsi_mq_find_tag(struct Scsi_Host *shost,
+ unsigned int hw_ctx, int tag)
+{
+ struct request *req;
+
+ req = blk_mq_tag_to_rq(shost->tag_set.tags[hw_ctx], tag);
+ return req ? (struct scsi_cmnd *)req->special : NULL;
+}
+
/**
* scsi_find_tag - find a tagged command by device
* @SDpnt: pointer to the ScSI device
@@ -118,10 +129,12 @@ static inline int scsi_populate_tag_msg(struct scsi_cmnd *cmd, char *msg)
**/
static inline struct scsi_cmnd *scsi_find_tag(struct scsi_device *sdev, int tag)
{
-
struct request *req;
if (tag != SCSI_NO_TAG) {
+ if (shost_use_blk_mq(sdev->host))
+ return scsi_mq_find_tag(sdev->host, 0, tag);
+
req = blk_queue_find_tag(sdev->request_queue, tag);
return req ? (struct scsi_cmnd *)req->special : NULL;
}
@@ -130,6 +143,7 @@ static inline struct scsi_cmnd *scsi_find_tag(struct scsi_device *sdev, int tag)
return sdev->current_cmnd;
}
+
/**
* scsi_init_shared_tag_map - create a shared tag map
* @shost: the host to share the tag map among all devices
@@ -138,6 +152,12 @@ static inline struct scsi_cmnd *scsi_find_tag(struct scsi_device *sdev, int tag)
static inline int scsi_init_shared_tag_map(struct Scsi_Host *shost, int depth)
{
/*
+ * We always have a shared tag map around when using blk-mq.
+ */
+ if (shost_use_blk_mq(shost))
+ return 0;
+
+ /*
* If the shared tag map isn't already initialized, do it now.
* This saves callers from having to check ->bqt when setting up
* devices on the shared host (for libata)
@@ -165,6 +185,8 @@ static inline struct scsi_cmnd *scsi_host_find_tag(struct Scsi_Host *shost,
struct request *req;
if (tag != SCSI_NO_TAG) {
+ if (shost_use_blk_mq(shost))
+ return scsi_mq_find_tag(shost, 0, tag);
req = blk_map_queue_find_tag(shost->bqt, tag);
return req ? (struct scsi_cmnd *)req->special : NULL;
}
diff --git a/include/scsi/scsi_tgt.h b/include/scsi/scsi_tgt.h
deleted file mode 100644
index d0fefb96158f..000000000000
--- a/include/scsi/scsi_tgt.h
+++ /dev/null
@@ -1,21 +0,0 @@
-/*
- * SCSI target definitions
- */
-
-#include <linux/dma-mapping.h>
-
-struct Scsi_Host;
-struct scsi_cmnd;
-struct scsi_lun;
-
-extern struct Scsi_Host *scsi_tgt_cmd_to_host(struct scsi_cmnd *);
-extern int scsi_tgt_alloc_queue(struct Scsi_Host *);
-extern void scsi_tgt_free_queue(struct Scsi_Host *);
-extern int scsi_tgt_queue_command(struct scsi_cmnd *, u64, struct scsi_lun *, u64);
-extern int scsi_tgt_tsk_mgmt_request(struct Scsi_Host *, u64, int, u64,
- struct scsi_lun *, void *);
-extern struct scsi_cmnd *scsi_host_get_command(struct Scsi_Host *,
- enum dma_data_direction, gfp_t);
-extern void scsi_host_put_command(struct Scsi_Host *, struct scsi_cmnd *);
-extern int scsi_tgt_it_nexus_create(struct Scsi_Host *, u64, char *);
-extern int scsi_tgt_it_nexus_destroy(struct Scsi_Host *, u64);
diff --git a/include/scsi/scsi_tgt_if.h b/include/scsi/scsi_tgt_if.h
deleted file mode 100644
index f2ee7c238a45..000000000000
--- a/include/scsi/scsi_tgt_if.h
+++ /dev/null
@@ -1,108 +0,0 @@
-/*
- * SCSI target kernel/user interface
- *
- * Copyright (C) 2005 FUJITA Tomonori <tomof@acm.org>
- * Copyright (C) 2005 Mike Christie <michaelc@cs.wisc.edu>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
- * 02110-1301 USA
- */
-#ifndef __SCSI_TARGET_IF_H
-#define __SCSI_TARGET_IF_H
-
-/* user -> kernel */
-#define TGT_UEVENT_CMD_RSP 0x0001
-#define TGT_UEVENT_IT_NEXUS_RSP 0x0002
-#define TGT_UEVENT_TSK_MGMT_RSP 0x0003
-
-/* kernel -> user */
-#define TGT_KEVENT_CMD_REQ 0x1001
-#define TGT_KEVENT_CMD_DONE 0x1002
-#define TGT_KEVENT_IT_NEXUS_REQ 0x1003
-#define TGT_KEVENT_TSK_MGMT_REQ 0x1004
-
-struct tgt_event_hdr {
- uint16_t version;
- uint16_t status;
- uint16_t type;
- uint16_t len;
-} __attribute__ ((aligned (sizeof(uint64_t))));
-
-struct tgt_event {
- struct tgt_event_hdr hdr;
-
- union {
- /* user-> kernel */
- struct {
- int host_no;
- int result;
- aligned_u64 itn_id;
- aligned_u64 tag;
- aligned_u64 uaddr;
- aligned_u64 sense_uaddr;
- uint32_t len;
- uint32_t sense_len;
- uint8_t rw;
- } cmd_rsp;
- struct {
- int host_no;
- int result;
- aligned_u64 itn_id;
- aligned_u64 mid;
- } tsk_mgmt_rsp;
- struct {
- __s32 host_no;
- __s32 result;
- aligned_u64 itn_id;
- __u32 function;
- } it_nexus_rsp;
-
- /* kernel -> user */
- struct {
- int host_no;
- uint32_t data_len;
- aligned_u64 itn_id;
- uint8_t scb[16];
- uint8_t lun[8];
- int attribute;
- aligned_u64 tag;
- } cmd_req;
- struct {
- int host_no;
- int result;
- aligned_u64 itn_id;
- aligned_u64 tag;
- } cmd_done;
- struct {
- int host_no;
- int function;
- aligned_u64 itn_id;
- aligned_u64 tag;
- uint8_t lun[8];
- aligned_u64 mid;
- } tsk_mgmt_req;
- struct {
- __s32 host_no;
- __u32 function;
- aligned_u64 itn_id;
- __u32 max_cmds;
- __u8 initiator_id[16];
- } it_nexus_req;
- } p;
-} __attribute__ ((aligned (sizeof(uint64_t))));
-
-#define TGT_RING_SIZE (1UL << 16)
-
-#endif
diff --git a/include/scsi/scsi_transport.h b/include/scsi/scsi_transport.h
index af244f4bba53..81292392adbc 100644
--- a/include/scsi/scsi_transport.h
+++ b/include/scsi/scsi_transport.h
@@ -35,7 +35,7 @@ struct scsi_transport_template {
/*
* If set, called from sysfs and legacy procfs rescanning code.
*/
- int (*user_scan)(struct Scsi_Host *, uint, uint, uint);
+ int (*user_scan)(struct Scsi_Host *, uint, uint, u64);
/* The size of the specific transport attribute structure (a
* space of this size will be left at the end of the
diff --git a/include/scsi/scsi_transport_fc.h b/include/scsi/scsi_transport_fc.h
index 8c79980dc8f2..007a0bc01b74 100644
--- a/include/scsi/scsi_transport_fc.h
+++ b/include/scsi/scsi_transport_fc.h
@@ -131,6 +131,10 @@ enum fc_vport_state {
#define FC_PORTSPEED_8GBIT 0x10
#define FC_PORTSPEED_16GBIT 0x20
#define FC_PORTSPEED_32GBIT 0x40
+#define FC_PORTSPEED_20GBIT 0x80
+#define FC_PORTSPEED_40GBIT 0x100
+#define FC_PORTSPEED_50GBIT 0x200
+#define FC_PORTSPEED_100GBIT 0x400
#define FC_PORTSPEED_NOT_NEGOTIATED (1 << 15) /* Speed not established */
/*
diff --git a/include/scsi/sg.h b/include/scsi/sg.h
index a9f3c6fc3f57..9859355a7cf9 100644
--- a/include/scsi/sg.h
+++ b/include/scsi/sg.h
@@ -4,77 +4,34 @@
#include <linux/compiler.h>
/*
- History:
- Started: Aug 9 by Lawrence Foard (entropy@world.std.com), to allow user
- process control of SCSI devices.
- Development Sponsored by Killy Corp. NY NY
-Original driver (sg.h):
-* Copyright (C) 1992 Lawrence Foard
-Version 2 and 3 extensions to driver:
-* Copyright (C) 1998 - 2006 Douglas Gilbert
-
- Version: 3.5.34 (20060920)
- This version is for 2.6 series kernels.
-
- For a full changelog see http://www.torque.net/sg
-
-Map of SG verions to the Linux kernels in which they appear:
- ---------- ----------------------------------
- original all kernels < 2.2.6
- 2.1.40 2.2.20
- 3.0.x optional version 3 sg driver for 2.2 series
- 3.1.17++ 2.4.0++
- 3.5.30++ 2.6.0++
-
-Major new features in SG 3.x driver (cf SG 2.x drivers)
- - SG_IO ioctl() combines function if write() and read()
- - new interface (sg_io_hdr_t) but still supports old interface
- - scatter/gather in user space, direct IO, and mmap supported
-
- The normal action of this driver is to use the adapter (HBA) driver to DMA
- data into kernel buffers and then use the CPU to copy the data into the
- user space (vice versa for writes). That is called "indirect" IO due to
- the double handling of data. There are two methods offered to remove the
- redundant copy: 1) direct IO and 2) using the mmap() system call to map
- the reserve buffer (this driver has one reserve buffer per fd) into the
- user space. Both have their advantages.
- In terms of absolute speed mmap() is faster. If speed is not a concern,
- indirect IO should be fine. Read the documentation for more information.
-
- ** N.B. To use direct IO 'echo 1 > /proc/scsi/sg/allow_dio' or
- 'echo 1 > /sys/module/sg/parameters/allow_dio' is needed.
- That attribute is 0 by default. **
-
- Historical note: this SCSI pass-through driver has been known as "sg" for
- a decade. In broader kernel discussions "sg" is used to refer to scatter
- gather techniques. The context should clarify which "sg" is referred to.
-
- Documentation
- =============
- A web site for the SG device driver can be found at:
- http://www.torque.net/sg [alternatively check the MAINTAINERS file]
- The documentation for the sg version 3 driver can be found at:
- http://www.torque.net/sg/p/sg_v3_ho.html
- This is a rendering from DocBook source [change the extension to "sgml"
- or "xml"]. There are renderings in "ps", "pdf", "rtf" and "txt" (soon).
- The SG_IO ioctl is now found in other parts kernel (e.g. the block layer).
- For more information see http://www.torque.net/sg/sg_io.html
-
- The older, version 2 documents discuss the original sg interface in detail:
- http://www.torque.net/sg/p/scsi-generic.txt
- http://www.torque.net/sg/p/scsi-generic_long.txt
- Also available: <kernel_source>/Documentation/scsi/scsi-generic.txt
-
- Utility and test programs are available at the sg web site. They are
- packaged as sg3_utils (for the lk 2.4 and 2.6 series) and sg_utils
- (for the lk 2.2 series).
-*/
+ * History:
+ * Started: Aug 9 by Lawrence Foard (entropy@world.std.com), to allow user
+ * process control of SCSI devices.
+ * Development Sponsored by Killy Corp. NY NY
+ *
+ * Original driver (sg.h):
+ * Copyright (C) 1992 Lawrence Foard
+ * Version 2 and 3 extensions to driver:
+ * Copyright (C) 1998 - 2014 Douglas Gilbert
+ *
+ * Version: 3.5.36 (20140603)
+ * This version is for 2.6 and 3 series kernels.
+ *
+ * Documentation
+ * =============
+ * A web site for the SG device driver can be found at:
+ * http://sg.danny.cz/sg [alternatively check the MAINTAINERS file]
+ * The documentation for the sg version 3 driver can be found at:
+ * http://sg.danny.cz/sg/p/sg_v3_ho.html
+ * Also see: <kernel_source>/Documentation/scsi/scsi-generic.txt
+ *
+ * For utility and test programs see: http://sg.danny.cz/sg/sg3_utils.html
+ */
#ifdef __KERNEL__
extern int sg_big_buff; /* for sysctl */
#endif
-/* New interface introduced in the 3.x SG drivers follows */
typedef struct sg_iovec /* same structure as used by readv() Linux system */
{ /* call. It defines one scatter-gather element. */
@@ -87,7 +44,7 @@ typedef struct sg_io_hdr
{
int interface_id; /* [i] 'S' for SCSI generic (required) */
int dxfer_direction; /* [i] data transfer direction */
- unsigned char cmd_len; /* [i] SCSI command length ( <= 16 bytes) */
+ unsigned char cmd_len; /* [i] SCSI command length */
unsigned char mx_sb_len; /* [i] max length to write to sbp */
unsigned short iovec_count; /* [i] 0 implies no scatter gather */
unsigned int dxfer_len; /* [i] byte count of data transfer */
@@ -129,6 +86,7 @@ typedef struct sg_io_hdr
#define SG_FLAG_MMAP_IO 4 /* request memory mapped IO */
#define SG_FLAG_NO_DXFER 0x10000 /* no transfer of kernel buffers to/from */
/* user space (debug indirect IO) */
+#define SG_FLAG_Q_AT_TAIL 0x10 /* default is Q_AT_HEAD */
/* following 'info' values are "or"-ed together */
#define SG_INFO_OK_MASK 0x1
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