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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/scsi/scsi_priv.h
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/scsi/scsi_priv.h')
-rw-r--r--drivers/scsi/scsi_priv.h165
1 files changed, 165 insertions, 0 deletions
diff --git a/drivers/scsi/scsi_priv.h b/drivers/scsi/scsi_priv.h
new file mode 100644
index 00000000000..aca3b39fe71
--- /dev/null
+++ b/drivers/scsi/scsi_priv.h
@@ -0,0 +1,165 @@
+#ifndef _SCSI_PRIV_H
+#define _SCSI_PRIV_H
+
+#include <linux/config.h>
+#include <linux/device.h>
+
+struct request_queue;
+struct scsi_cmnd;
+struct scsi_device;
+struct scsi_host_template;
+struct scsi_request;
+struct Scsi_Host;
+
+
+/*
+ * These are the values that the owner field can take.
+ * They are used as an indication of who the command belongs to.
+ */
+#define SCSI_OWNER_HIGHLEVEL 0x100
+#define SCSI_OWNER_MIDLEVEL 0x101
+#define SCSI_OWNER_LOWLEVEL 0x102
+#define SCSI_OWNER_ERROR_HANDLER 0x103
+#define SCSI_OWNER_BH_HANDLER 0x104
+#define SCSI_OWNER_NOBODY 0x105
+
+/*
+ * Magic values for certain scsi structs. Shouldn't ever be used.
+ */
+#define SCSI_CMND_MAGIC 0xE25C23A5
+#define SCSI_REQ_MAGIC 0x75F6D354
+
+/*
+ * Flag bit for the internal_timeout array
+ */
+#define NORMAL_TIMEOUT 0
+
+/*
+ * Scsi Error Handler Flags
+ */
+#define scsi_eh_eflags_chk(scp, flags) \
+ ((scp)->eh_eflags & (flags))
+#define scsi_eh_eflags_set(scp, flags) \
+ do { (scp)->eh_eflags |= (flags); } while(0)
+#define scsi_eh_eflags_clr(scp, flags) \
+ do { (scp)->eh_eflags &= ~(flags); } while(0)
+#define scsi_eh_eflags_clr_all(scp) \
+ (scp->eh_eflags = 0)
+
+#define SCSI_EH_CANCEL_CMD 0x0001 /* Cancel this cmd */
+#define SCSI_EH_REC_TIMEOUT 0x0002 /* EH retry timed out */
+
+#define SCSI_SENSE_VALID(scmd) \
+ (((scmd)->sense_buffer[0] & 0x70) == 0x70)
+
+/*
+ * Special value for scanning to specify scanning or rescanning of all
+ * possible channels, (target) ids, or luns on a given shost.
+ */
+#define SCAN_WILD_CARD ~0
+
+/* hosts.c */
+extern int scsi_init_hosts(void);
+extern void scsi_exit_hosts(void);
+
+/* scsi.c */
+extern int scsi_dispatch_cmd(struct scsi_cmnd *cmd);
+extern int scsi_setup_command_freelist(struct Scsi_Host *shost);
+extern void scsi_destroy_command_freelist(struct Scsi_Host *shost);
+extern void scsi_done(struct scsi_cmnd *cmd);
+extern int scsi_retry_command(struct scsi_cmnd *cmd);
+extern int scsi_insert_special_req(struct scsi_request *sreq, int);
+extern void scsi_init_cmd_from_req(struct scsi_cmnd *cmd,
+ struct scsi_request *sreq);
+extern void __scsi_release_request(struct scsi_request *sreq);
+extern void __scsi_done(struct scsi_cmnd *cmd);
+#ifdef CONFIG_SCSI_LOGGING
+void scsi_log_send(struct scsi_cmnd *cmd);
+void scsi_log_completion(struct scsi_cmnd *cmd, int disposition);
+#else
+static inline void scsi_log_send(struct scsi_cmnd *cmd)
+ { };
+static inline void scsi_log_completion(struct scsi_cmnd *cmd, int disposition)
+ { };
+#endif
+
+/* scsi_devinfo.c */
+extern int scsi_get_device_flags(struct scsi_device *sdev,
+ unsigned char *vendor, unsigned char *model);
+extern int __init scsi_init_devinfo(void);
+extern void scsi_exit_devinfo(void);
+
+/* scsi_error.c */
+extern void scsi_times_out(struct scsi_cmnd *cmd);
+extern int scsi_error_handler(void *host);
+extern int scsi_decide_disposition(struct scsi_cmnd *cmd);
+extern void scsi_eh_wakeup(struct Scsi_Host *shost);
+extern int scsi_eh_scmd_add(struct scsi_cmnd *, int);
+
+/* scsi_lib.c */
+extern int scsi_maybe_unblock_host(struct scsi_device *sdev);
+extern void scsi_setup_cmd_retry(struct scsi_cmnd *cmd);
+extern void scsi_device_unbusy(struct scsi_device *sdev);
+extern int scsi_queue_insert(struct scsi_cmnd *cmd, int reason);
+extern void scsi_next_command(struct scsi_cmnd *cmd);
+extern void scsi_run_host_queues(struct Scsi_Host *shost);
+extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev);
+extern void scsi_free_queue(struct request_queue *q);
+extern int scsi_init_queue(void);
+extern void scsi_exit_queue(void);
+
+/* scsi_proc.c */
+#ifdef CONFIG_SCSI_PROC_FS
+extern void scsi_proc_hostdir_add(struct scsi_host_template *);
+extern void scsi_proc_hostdir_rm(struct scsi_host_template *);
+extern void scsi_proc_host_add(struct Scsi_Host *);
+extern void scsi_proc_host_rm(struct Scsi_Host *);
+extern int scsi_init_procfs(void);
+extern void scsi_exit_procfs(void);
+#else
+# define scsi_proc_hostdir_add(sht) do { } while (0)
+# define scsi_proc_hostdir_rm(sht) do { } while (0)
+# define scsi_proc_host_add(shost) do { } while (0)
+# define scsi_proc_host_rm(shost) do { } while (0)
+# define scsi_init_procfs() (0)
+# define scsi_exit_procfs() do { } while (0)
+#endif /* CONFIG_PROC_FS */
+
+/* scsi_scan.c */
+extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int,
+ unsigned int, unsigned int, int);
+extern void scsi_forget_host(struct Scsi_Host *);
+extern void scsi_rescan_device(struct device *);
+
+/* scsi_sysctl.c */
+#ifdef CONFIG_SYSCTL
+extern int scsi_init_sysctl(void);
+extern void scsi_exit_sysctl(void);
+#else
+# define scsi_init_sysctl() (0)
+# define scsi_exit_sysctl() do { } while (0)
+#endif /* CONFIG_SYSCTL */
+
+/* scsi_sysfs.c */
+extern void scsi_device_dev_release(struct device *);
+extern int scsi_sysfs_add_sdev(struct scsi_device *);
+extern int scsi_sysfs_add_host(struct Scsi_Host *);
+extern int scsi_sysfs_register(void);
+extern void scsi_sysfs_unregister(void);
+extern void scsi_sysfs_device_initialize(struct scsi_device *);
+extern int scsi_sysfs_target_initialize(struct scsi_device *);
+extern struct scsi_transport_template blank_transport_template;
+
+extern struct class sdev_class;
+extern struct bus_type scsi_bus_type;
+
+/*
+ * internal scsi timeout functions: for use by mid-layer and transport
+ * classes.
+ */
+
+#define SCSI_DEVICE_BLOCK_MAX_TIMEOUT (HZ*60)
+extern int scsi_internal_device_block(struct scsi_device *sdev);
+extern int scsi_internal_device_unblock(struct scsi_device *sdev);
+
+#endif /* _SCSI_PRIV_H */