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-rw-r--r--include/scsi/scsi.h8
-rw-r--r--include/scsi/scsi_cmnd.h5
-rw-r--r--include/scsi/scsi_device.h7
-rw-r--r--include/scsi/scsi_host.h31
-rw-r--r--include/scsi/scsi_transport.h38
-rw-r--r--include/scsi/sg_request.h26
6 files changed, 100 insertions, 15 deletions
diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h
index 659ecf48fb4..b361172b576 100644
--- a/include/scsi/scsi.h
+++ b/include/scsi/scsi.h
@@ -28,7 +28,7 @@ extern const unsigned char scsi_command_size[8];
* SCSI device types
*/
-#define MAX_SCSI_DEVICE_CODE 14
+#define MAX_SCSI_DEVICE_CODE 15
extern const char *const scsi_device_types[MAX_SCSI_DEVICE_CODE];
/*
@@ -41,6 +41,7 @@ extern const char *const scsi_device_types[MAX_SCSI_DEVICE_CODE];
#define FORMAT_UNIT 0x04
#define READ_BLOCK_LIMITS 0x05
#define REASSIGN_BLOCKS 0x07
+#define INITIALIZE_ELEMENT_STATUS 0x07
#define READ_6 0x08
#define WRITE_6 0x0a
#define SEEK_6 0x0b
@@ -65,6 +66,7 @@ extern const char *const scsi_device_types[MAX_SCSI_DEVICE_CODE];
#define READ_10 0x28
#define WRITE_10 0x2a
#define SEEK_10 0x2b
+#define POSITION_TO_ELEMENT 0x2b
#define WRITE_VERIFY 0x2e
#define VERIFY 0x2f
#define SEARCH_HIGH 0x30
@@ -97,6 +99,7 @@ extern const char *const scsi_device_types[MAX_SCSI_DEVICE_CODE];
#define PERSISTENT_RESERVE_OUT 0x5f
#define REPORT_LUNS 0xa0
#define MOVE_MEDIUM 0xa5
+#define EXCHANGE_MEDIUM 0xa6
#define READ_12 0xa8
#define WRITE_12 0xaa
#define WRITE_VERIFY_12 0xae
@@ -208,8 +211,9 @@ static inline int scsi_status_is_good(int status)
* - treated as TYPE_DISK */
#define TYPE_MEDIUM_CHANGER 0x08
#define TYPE_COMM 0x09 /* Communications device */
-#define TYPE_ENCLOSURE 0x0d /* Enclosure Services Device */
#define TYPE_RAID 0x0c
+#define TYPE_ENCLOSURE 0x0d /* Enclosure Services Device */
+#define TYPE_RBC 0x0e
#define TYPE_NO_LUN 0x7f
/*
diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h
index 07f5c699eaa..9957f16dcc5 100644
--- a/include/scsi/scsi_cmnd.h
+++ b/include/scsi/scsi_cmnd.h
@@ -31,14 +31,11 @@ struct scsi_cmnd {
int sc_magic;
struct scsi_device *device;
- unsigned short state;
- unsigned short owner;
struct scsi_request *sc_request;
struct list_head list; /* scsi_cmnd participates in queue lists */
struct list_head eh_entry; /* entry for the host eh_cmd_q */
- int eh_state; /* Used for state tracking in error handlr */
int eh_eflags; /* Used by error handlr */
void (*done) (struct scsi_cmnd *); /* Mid-level done function */
@@ -80,8 +77,6 @@ struct scsi_cmnd {
* sense info */
unsigned short use_sg; /* Number of pieces of scatter-gather */
unsigned short sglist_len; /* size of malloc'd scatter-gather list */
- unsigned short abort_reason; /* If the mid-level code requests an
- * abort, this is the reason. */
unsigned bufflen; /* Size of data buffer */
void *buffer; /* Data buffer */
diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h
index c018020d916..835af8ecbb7 100644
--- a/include/scsi/scsi_device.h
+++ b/include/scsi/scsi_device.h
@@ -9,7 +9,7 @@
struct request_queue;
struct scsi_cmnd;
struct scsi_mode_data;
-
+struct scsi_lun;
/*
* sdev state: If you alter this, you also need to alter scsi_sysfs.c
@@ -154,7 +154,9 @@ struct scsi_target {
unsigned int id; /* target id ... replace
* scsi_device.id eventually */
unsigned long create:1; /* signal that it needs to be added */
- unsigned long starget_data[0];
+ void *hostdata; /* available to low-level driver */
+ unsigned long starget_data[0]; /* for the transport */
+ /* starget_data must be the last element!!!! */
} __attribute__((aligned(sizeof(unsigned long))));
#define to_scsi_target(d) container_of(d, struct scsi_target, dev)
@@ -241,6 +243,7 @@ extern void scsi_target_reap(struct scsi_target *);
extern void scsi_target_block(struct device *);
extern void scsi_target_unblock(struct device *);
extern void scsi_remove_target(struct device *);
+extern void int_to_scsilun(unsigned 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_host.h b/include/scsi/scsi_host.h
index 1cee1e10094..81d5234f677 100644
--- a/include/scsi/scsi_host.h
+++ b/include/scsi/scsi_host.h
@@ -10,6 +10,7 @@ struct block_device;
struct module;
struct scsi_cmnd;
struct scsi_device;
+struct scsi_target;
struct Scsi_Host;
struct scsi_host_cmd_pool;
struct scsi_transport_template;
@@ -228,6 +229,30 @@ struct scsi_host_template {
void (* slave_destroy)(struct scsi_device *);
/*
+ * Before the mid layer attempts to scan for a new device attached
+ * to a target where no target currently exists, it will call this
+ * entry in your driver. Should your driver need to allocate any
+ * structs or perform any other init items in order to send commands
+ * to a currently unused target, then this is where you can perform
+ * those allocations.
+ *
+ * Return values: 0 on success, non-0 on failure
+ *
+ * Status: OPTIONAL
+ */
+ int (* target_alloc)(struct scsi_target *);
+
+ /*
+ * Immediately prior to deallocating the target structure, and
+ * after all activity to attached scsi devices has ceased, the
+ * midlayer calls this point so that the driver may deallocate
+ * and terminate any references to the target.
+ *
+ * Status: OPTIONAL
+ */
+ void (* target_destroy)(struct scsi_target *);
+
+ /*
* fill in this function to allow the queue depth of this host
* to be changeable (on a per device basis). returns either
* the current queue depth setting (may be different from what
@@ -616,12 +641,6 @@ static inline void scsi_assign_lock(struct Scsi_Host *shost, spinlock_t *lock)
shost->host_lock = lock;
}
-static inline void scsi_set_device(struct Scsi_Host *shost,
- struct device *dev)
-{
- shost->shost_gendev.parent = dev;
-}
-
static inline struct device *scsi_get_device(struct Scsi_Host *shost)
{
return shost->shost_gendev.parent;
diff --git a/include/scsi/scsi_transport.h b/include/scsi/scsi_transport.h
index 2dcee7a8475..a4f1837a33b 100644
--- a/include/scsi/scsi_transport.h
+++ b/include/scsi/scsi_transport.h
@@ -21,6 +21,7 @@
#define SCSI_TRANSPORT_H
#include <linux/transport_class.h>
+#include <scsi/scsi_host.h>
struct scsi_transport_template {
/* the attribute containers */
@@ -32,8 +33,11 @@ struct scsi_transport_template {
* space of this size will be left at the end of the
* scsi_* structure */
int device_size;
+ int device_private_offset;
int target_size;
+ int target_private_offset;
int host_size;
+ /* no private offset for the host; there's an alternative mechanism */
/*
* True if the transport wants to use a host-based work-queue
@@ -45,4 +49,38 @@ struct scsi_transport_template {
dev_to_shost((tc)->dev)
+/* Private area maintenance. The driver requested allocations come
+ * directly after the transport class allocations (if any). The idea
+ * is that you *must* call these only once. The code assumes that the
+ * initial values are the ones the transport specific code requires */
+static inline void
+scsi_transport_reserve_target(struct scsi_transport_template * t, int space)
+{
+ BUG_ON(t->target_private_offset != 0);
+ t->target_private_offset = ALIGN(t->target_size, sizeof(void *));
+ t->target_size = t->target_private_offset + space;
+}
+static inline void
+scsi_transport_reserve_device(struct scsi_transport_template * t, int space)
+{
+ BUG_ON(t->device_private_offset != 0);
+ t->device_private_offset = ALIGN(t->device_size, sizeof(void *));
+ t->device_size = t->device_private_offset + space;
+}
+static inline void *
+scsi_transport_target_data(struct scsi_target *starget)
+{
+ struct Scsi_Host *shost = dev_to_shost(&starget->dev);
+ return (u8 *)starget->starget_data
+ + shost->transportt->target_private_offset;
+
+}
+static inline void *
+scsi_transport_device_data(struct scsi_device *sdev)
+{
+ struct Scsi_Host *shost = sdev->host;
+ return (u8 *)sdev->sdev_data
+ + shost->transportt->device_private_offset;
+}
+
#endif /* SCSI_TRANSPORT_H */
diff --git a/include/scsi/sg_request.h b/include/scsi/sg_request.h
new file mode 100644
index 00000000000..57ff525bdd3
--- /dev/null
+++ b/include/scsi/sg_request.h
@@ -0,0 +1,26 @@
+typedef struct scsi_request Scsi_Request;
+
+static Scsi_Request *dummy_cmdp; /* only used for sizeof */
+
+typedef struct sg_scatter_hold { /* holding area for scsi scatter gather info */
+ unsigned short k_use_sg; /* Count of kernel scatter-gather pieces */
+ unsigned short sglist_len; /* size of malloc'd scatter-gather list ++ */
+ unsigned bufflen; /* Size of (aggregate) data buffer */
+ unsigned b_malloc_len; /* actual len malloc'ed in buffer */
+ void *buffer; /* Data buffer or scatter list (k_use_sg>0) */
+ char dio_in_use; /* 0->indirect IO (or mmap), 1->dio */
+ unsigned char cmd_opcode; /* first byte of command */
+} Sg_scatter_hold;
+
+typedef struct sg_request { /* SG_MAX_QUEUE requests outstanding per file */
+ Scsi_Request *my_cmdp; /* != 0 when request with lower levels */
+ struct sg_request *nextrp; /* NULL -> tail request (slist) */
+ struct sg_fd *parentfp; /* NULL -> not in use */
+ Sg_scatter_hold data; /* hold buffer, perhaps scatter list */
+ sg_io_hdr_t header; /* scsi command+info, see <scsi/sg.h> */
+ unsigned char sense_b[sizeof (dummy_cmdp->sr_sense_buffer)];
+ char res_used; /* 1 -> using reserve buffer, 0 -> not ... */
+ char orphan; /* 1 -> drop on sight, 0 -> normal */
+ char sg_io_owned; /* 1 -> packet belongs to SG_IO */
+ volatile char done; /* 0->before bh, 1->before read, 2->read */
+} Sg_request;
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-16 15:12:02 +0000