[TG3]: Set minimal hw interrupt mitigation.
[linux-2.6/verdex.git] / drivers / scsi / scsi_priv.h
blobc01580df4476bc1acc70a41bd23434cc067fdf67
1 #ifndef _SCSI_PRIV_H
2 #define _SCSI_PRIV_H
4 #include <linux/config.h>
5 #include <linux/device.h>
7 struct request_queue;
8 struct scsi_cmnd;
9 struct scsi_device;
10 struct scsi_host_template;
11 struct scsi_request;
12 struct Scsi_Host;
16 * These are the values that the owner field can take.
17 * They are used as an indication of who the command belongs to.
19 #define SCSI_OWNER_HIGHLEVEL 0x100
20 #define SCSI_OWNER_MIDLEVEL 0x101
21 #define SCSI_OWNER_LOWLEVEL 0x102
22 #define SCSI_OWNER_ERROR_HANDLER 0x103
23 #define SCSI_OWNER_BH_HANDLER 0x104
24 #define SCSI_OWNER_NOBODY 0x105
27 * Magic values for certain scsi structs. Shouldn't ever be used.
29 #define SCSI_CMND_MAGIC 0xE25C23A5
30 #define SCSI_REQ_MAGIC 0x75F6D354
33 * Scsi Error Handler Flags
35 #define scsi_eh_eflags_chk(scp, flags) \
36 ((scp)->eh_eflags & (flags))
37 #define scsi_eh_eflags_set(scp, flags) \
38 do { (scp)->eh_eflags |= (flags); } while(0)
39 #define scsi_eh_eflags_clr(scp, flags) \
40 do { (scp)->eh_eflags &= ~(flags); } while(0)
41 #define scsi_eh_eflags_clr_all(scp) \
42 (scp->eh_eflags = 0)
44 #define SCSI_EH_CANCEL_CMD 0x0001 /* Cancel this cmd */
45 #define SCSI_EH_REC_TIMEOUT 0x0002 /* EH retry timed out */
47 #define SCSI_SENSE_VALID(scmd) \
48 (((scmd)->sense_buffer[0] & 0x70) == 0x70)
51 * Special value for scanning to specify scanning or rescanning of all
52 * possible channels, (target) ids, or luns on a given shost.
54 #define SCAN_WILD_CARD ~0
56 /* hosts.c */
57 extern int scsi_init_hosts(void);
58 extern void scsi_exit_hosts(void);
60 /* scsi.c */
61 extern int scsi_dispatch_cmd(struct scsi_cmnd *cmd);
62 extern int scsi_setup_command_freelist(struct Scsi_Host *shost);
63 extern void scsi_destroy_command_freelist(struct Scsi_Host *shost);
64 extern void scsi_done(struct scsi_cmnd *cmd);
65 extern int scsi_retry_command(struct scsi_cmnd *cmd);
66 extern int scsi_insert_special_req(struct scsi_request *sreq, int);
67 extern void scsi_init_cmd_from_req(struct scsi_cmnd *cmd,
68 struct scsi_request *sreq);
69 extern void __scsi_release_request(struct scsi_request *sreq);
70 extern void __scsi_done(struct scsi_cmnd *cmd);
71 #ifdef CONFIG_SCSI_LOGGING
72 void scsi_log_send(struct scsi_cmnd *cmd);
73 void scsi_log_completion(struct scsi_cmnd *cmd, int disposition);
74 #else
75 static inline void scsi_log_send(struct scsi_cmnd *cmd)
76 { };
77 static inline void scsi_log_completion(struct scsi_cmnd *cmd, int disposition)
78 { };
79 #endif
81 /* scsi_devinfo.c */
82 extern int scsi_get_device_flags(struct scsi_device *sdev,
83 unsigned char *vendor, unsigned char *model);
84 extern int __init scsi_init_devinfo(void);
85 extern void scsi_exit_devinfo(void);
87 /* scsi_error.c */
88 extern void scsi_times_out(struct scsi_cmnd *cmd);
89 extern int scsi_error_handler(void *host);
90 extern int scsi_decide_disposition(struct scsi_cmnd *cmd);
91 extern void scsi_eh_wakeup(struct Scsi_Host *shost);
92 extern int scsi_eh_scmd_add(struct scsi_cmnd *, int);
94 /* scsi_lib.c */
95 extern int scsi_maybe_unblock_host(struct scsi_device *sdev);
96 extern void scsi_setup_cmd_retry(struct scsi_cmnd *cmd);
97 extern void scsi_device_unbusy(struct scsi_device *sdev);
98 extern int scsi_queue_insert(struct scsi_cmnd *cmd, int reason);
99 extern void scsi_next_command(struct scsi_cmnd *cmd);
100 extern void scsi_run_host_queues(struct Scsi_Host *shost);
101 extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev);
102 extern void scsi_free_queue(struct request_queue *q);
103 extern int scsi_init_queue(void);
104 extern void scsi_exit_queue(void);
106 /* scsi_proc.c */
107 #ifdef CONFIG_SCSI_PROC_FS
108 extern void scsi_proc_hostdir_add(struct scsi_host_template *);
109 extern void scsi_proc_hostdir_rm(struct scsi_host_template *);
110 extern void scsi_proc_host_add(struct Scsi_Host *);
111 extern void scsi_proc_host_rm(struct Scsi_Host *);
112 extern int scsi_init_procfs(void);
113 extern void scsi_exit_procfs(void);
114 #else
115 # define scsi_proc_hostdir_add(sht) do { } while (0)
116 # define scsi_proc_hostdir_rm(sht) do { } while (0)
117 # define scsi_proc_host_add(shost) do { } while (0)
118 # define scsi_proc_host_rm(shost) do { } while (0)
119 # define scsi_init_procfs() (0)
120 # define scsi_exit_procfs() do { } while (0)
121 #endif /* CONFIG_PROC_FS */
123 /* scsi_scan.c */
124 extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int,
125 unsigned int, unsigned int, int);
126 extern void scsi_forget_host(struct Scsi_Host *);
127 extern void scsi_rescan_device(struct device *);
129 /* scsi_sysctl.c */
130 #ifdef CONFIG_SYSCTL
131 extern int scsi_init_sysctl(void);
132 extern void scsi_exit_sysctl(void);
133 #else
134 # define scsi_init_sysctl() (0)
135 # define scsi_exit_sysctl() do { } while (0)
136 #endif /* CONFIG_SYSCTL */
138 /* scsi_sysfs.c */
139 extern void scsi_device_dev_release(struct device *);
140 extern int scsi_sysfs_add_sdev(struct scsi_device *);
141 extern int scsi_sysfs_add_host(struct Scsi_Host *);
142 extern int scsi_sysfs_register(void);
143 extern void scsi_sysfs_unregister(void);
144 extern void scsi_sysfs_device_initialize(struct scsi_device *);
145 extern int scsi_sysfs_target_initialize(struct scsi_device *);
146 extern struct scsi_transport_template blank_transport_template;
148 extern struct class sdev_class;
149 extern struct bus_type scsi_bus_type;
152 * internal scsi timeout functions: for use by mid-layer and transport
153 * classes.
156 #define SCSI_DEVICE_BLOCK_MAX_TIMEOUT (HZ*60)
157 extern int scsi_internal_device_block(struct scsi_device *sdev);
158 extern int scsi_internal_device_unblock(struct scsi_device *sdev);
160 #endif /* _SCSI_PRIV_H */