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1da177e4 LT |
1 | #ifndef _SCSI_PRIV_H |
2 | #define _SCSI_PRIV_H | |
3 | ||
4 | #include <linux/config.h> | |
5 | #include <linux/device.h> | |
6 | ||
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; | |
13 | ||
14 | ||
15 | /* | |
16 | * These are the values that the owner field can take. | |
17 | * They are used as an indication of who the command belongs to. | |
18 | */ | |
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 | |
25 | ||
26 | /* | |
27 | * Magic values for certain scsi structs. Shouldn't ever be used. | |
28 | */ | |
29 | #define SCSI_CMND_MAGIC 0xE25C23A5 | |
30 | #define SCSI_REQ_MAGIC 0x75F6D354 | |
31 | ||
32 | /* | |
33 | * Flag bit for the internal_timeout array | |
34 | */ | |
35 | #define NORMAL_TIMEOUT 0 | |
36 | ||
37 | /* | |
38 | * Scsi Error Handler Flags | |
39 | */ | |
40 | #define scsi_eh_eflags_chk(scp, flags) \ | |
41 | ((scp)->eh_eflags & (flags)) | |
42 | #define scsi_eh_eflags_set(scp, flags) \ | |
43 | do { (scp)->eh_eflags |= (flags); } while(0) | |
44 | #define scsi_eh_eflags_clr(scp, flags) \ | |
45 | do { (scp)->eh_eflags &= ~(flags); } while(0) | |
46 | #define scsi_eh_eflags_clr_all(scp) \ | |
47 | (scp->eh_eflags = 0) | |
48 | ||
49 | #define SCSI_EH_CANCEL_CMD 0x0001 /* Cancel this cmd */ | |
50 | #define SCSI_EH_REC_TIMEOUT 0x0002 /* EH retry timed out */ | |
51 | ||
52 | #define SCSI_SENSE_VALID(scmd) \ | |
53 | (((scmd)->sense_buffer[0] & 0x70) == 0x70) | |
54 | ||
55 | /* | |
56 | * Special value for scanning to specify scanning or rescanning of all | |
57 | * possible channels, (target) ids, or luns on a given shost. | |
58 | */ | |
59 | #define SCAN_WILD_CARD ~0 | |
60 | ||
61 | /* hosts.c */ | |
62 | extern int scsi_init_hosts(void); | |
63 | extern void scsi_exit_hosts(void); | |
64 | ||
65 | /* scsi.c */ | |
66 | extern int scsi_dispatch_cmd(struct scsi_cmnd *cmd); | |
67 | extern int scsi_setup_command_freelist(struct Scsi_Host *shost); | |
68 | extern void scsi_destroy_command_freelist(struct Scsi_Host *shost); | |
69 | extern void scsi_done(struct scsi_cmnd *cmd); | |
70 | extern int scsi_retry_command(struct scsi_cmnd *cmd); | |
71 | extern int scsi_insert_special_req(struct scsi_request *sreq, int); | |
72 | extern void scsi_init_cmd_from_req(struct scsi_cmnd *cmd, | |
73 | struct scsi_request *sreq); | |
74 | extern void __scsi_release_request(struct scsi_request *sreq); | |
75 | extern void __scsi_done(struct scsi_cmnd *cmd); | |
76 | #ifdef CONFIG_SCSI_LOGGING | |
77 | void scsi_log_send(struct scsi_cmnd *cmd); | |
78 | void scsi_log_completion(struct scsi_cmnd *cmd, int disposition); | |
79 | #else | |
80 | static inline void scsi_log_send(struct scsi_cmnd *cmd) | |
81 | { }; | |
82 | static inline void scsi_log_completion(struct scsi_cmnd *cmd, int disposition) | |
83 | { }; | |
84 | #endif | |
85 | ||
86 | /* scsi_devinfo.c */ | |
87 | extern int scsi_get_device_flags(struct scsi_device *sdev, | |
88 | unsigned char *vendor, unsigned char *model); | |
89 | extern int __init scsi_init_devinfo(void); | |
90 | extern void scsi_exit_devinfo(void); | |
91 | ||
92 | /* scsi_error.c */ | |
93 | extern void scsi_times_out(struct scsi_cmnd *cmd); | |
94 | extern int scsi_error_handler(void *host); | |
95 | extern int scsi_decide_disposition(struct scsi_cmnd *cmd); | |
96 | extern void scsi_eh_wakeup(struct Scsi_Host *shost); | |
97 | extern int scsi_eh_scmd_add(struct scsi_cmnd *, int); | |
98 | ||
99 | /* scsi_lib.c */ | |
100 | extern int scsi_maybe_unblock_host(struct scsi_device *sdev); | |
101 | extern void scsi_setup_cmd_retry(struct scsi_cmnd *cmd); | |
102 | extern void scsi_device_unbusy(struct scsi_device *sdev); | |
103 | extern int scsi_queue_insert(struct scsi_cmnd *cmd, int reason); | |
104 | extern void scsi_next_command(struct scsi_cmnd *cmd); | |
105 | extern void scsi_run_host_queues(struct Scsi_Host *shost); | |
106 | extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev); | |
107 | extern void scsi_free_queue(struct request_queue *q); | |
108 | extern int scsi_init_queue(void); | |
109 | extern void scsi_exit_queue(void); | |
110 | ||
111 | /* scsi_proc.c */ | |
112 | #ifdef CONFIG_SCSI_PROC_FS | |
113 | extern void scsi_proc_hostdir_add(struct scsi_host_template *); | |
114 | extern void scsi_proc_hostdir_rm(struct scsi_host_template *); | |
115 | extern void scsi_proc_host_add(struct Scsi_Host *); | |
116 | extern void scsi_proc_host_rm(struct Scsi_Host *); | |
117 | extern int scsi_init_procfs(void); | |
118 | extern void scsi_exit_procfs(void); | |
119 | #else | |
120 | # define scsi_proc_hostdir_add(sht) do { } while (0) | |
121 | # define scsi_proc_hostdir_rm(sht) do { } while (0) | |
122 | # define scsi_proc_host_add(shost) do { } while (0) | |
123 | # define scsi_proc_host_rm(shost) do { } while (0) | |
124 | # define scsi_init_procfs() (0) | |
125 | # define scsi_exit_procfs() do { } while (0) | |
126 | #endif /* CONFIG_PROC_FS */ | |
127 | ||
128 | /* scsi_scan.c */ | |
129 | extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int, | |
130 | unsigned int, unsigned int, int); | |
131 | extern void scsi_forget_host(struct Scsi_Host *); | |
132 | extern void scsi_rescan_device(struct device *); | |
133 | ||
134 | /* scsi_sysctl.c */ | |
135 | #ifdef CONFIG_SYSCTL | |
136 | extern int scsi_init_sysctl(void); | |
137 | extern void scsi_exit_sysctl(void); | |
138 | #else | |
139 | # define scsi_init_sysctl() (0) | |
140 | # define scsi_exit_sysctl() do { } while (0) | |
141 | #endif /* CONFIG_SYSCTL */ | |
142 | ||
143 | /* scsi_sysfs.c */ | |
144 | extern void scsi_device_dev_release(struct device *); | |
145 | extern int scsi_sysfs_add_sdev(struct scsi_device *); | |
146 | extern int scsi_sysfs_add_host(struct Scsi_Host *); | |
147 | extern int scsi_sysfs_register(void); | |
148 | extern void scsi_sysfs_unregister(void); | |
149 | extern void scsi_sysfs_device_initialize(struct scsi_device *); | |
150 | extern int scsi_sysfs_target_initialize(struct scsi_device *); | |
151 | extern struct scsi_transport_template blank_transport_template; | |
152 | ||
153 | extern struct class sdev_class; | |
154 | extern struct bus_type scsi_bus_type; | |
155 | ||
156 | /* | |
157 | * internal scsi timeout functions: for use by mid-layer and transport | |
158 | * classes. | |
159 | */ | |
160 | ||
161 | #define SCSI_DEVICE_BLOCK_MAX_TIMEOUT (HZ*60) | |
162 | extern int scsi_internal_device_block(struct scsi_device *sdev); | |
163 | extern int scsi_internal_device_unblock(struct scsi_device *sdev); | |
164 | ||
165 | #endif /* _SCSI_PRIV_H */ |