2 * Data structures and definitions for SCSI Interface Modules (SIMs).
4 * Copyright (c) 1997 Justin T. Gibbs.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions, and the following disclaimer,
12 * without modification, immediately at the beginning of the file.
13 * 2. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
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28 * $FreeBSD: src/sys/cam/cam_sim.h,v 1.4 1999/12/29 04:54:27 peter Exp $
29 * $DragonFly: src/sys/bus/cam/cam_sim.h,v 1.5 2004/09/17 02:20:53 joerg Exp $
32 #ifndef _CAM_CAM_SIM_H
33 #define _CAM_CAM_SIM_H 1
38 * The sim driver creates a sim for each controller. The sim device
39 * queue is separately created in order to allow resource sharing between
40 * sims. For instance, a driver may create one sim for each channel of
41 * a multi-channel controller and use the same queue for each channel.
42 * In this way, the queue resources are shared across all the channels
43 * of the multi-channel controller.
49 typedef void (*sim_action_func)(struct cam_sim *sim, union ccb *ccb);
50 typedef void (*sim_poll_func)(struct cam_sim *sim);
52 struct cam_devq * cam_simq_alloc(u_int32_t max_sim_transactions);
53 void cam_simq_release(struct cam_devq *devq);
55 struct cam_sim * cam_sim_alloc(sim_action_func sim_action,
56 sim_poll_func sim_poll,
60 int max_dev_transactions,
61 int max_tagged_dev_transactions,
62 struct cam_devq *queue);
63 void cam_sim_free(struct cam_sim *sim);
64 void cam_sim_release(struct cam_sim *sim, int flags);
66 #define CAM_SIM_DEVQ 0x0001
67 #define CAM_SIM_SOFTC 0x0002
69 /* Optional sim attributes may be set with these. */
70 void cam_sim_set_path(struct cam_sim *sim, u_int32_t path_id);
74 /* Convenience routines for accessing sim attributes. */
75 static __inline u_int32_t cam_sim_path(struct cam_sim *sim);
76 static __inline const char *cam_sim_name(struct cam_sim *sim);
77 static __inline void * cam_sim_softc(struct cam_sim *sim);
78 static __inline u_int32_t cam_sim_unit(struct cam_sim *sim);
79 static __inline u_int32_t cam_sim_bus(struct cam_sim *sim);
83 /* Generically useful offsets into the sim private area */
84 #define spriv_ptr0 sim_priv.entries[0].ptr
85 #define spriv_ptr1 sim_priv.entries[1].ptr
86 #define spriv_field0 sim_priv.entries[0].field
87 #define spriv_field1 sim_priv.entries[1].field
90 * The sim driver should not access anything directly from this
94 sim_action_func sim_action;
95 sim_poll_func sim_poll;
97 void *softc; /* might be NULL */
98 u_int32_t path_id; /* bootdev may set this to 0? */
99 u_int32_t unit_number;
101 int max_tagged_dev_openings;
102 int max_dev_openings;
104 #define CAM_SIM_REL_TIMEOUT_PENDING 0x01
105 struct callout c_handle;
106 struct cam_devq *devq; /* Device Queue to use for this SIM */
107 int refcount; /* References to the sim */
110 static __inline u_int32_t
111 cam_sim_path(struct cam_sim *sim)
113 return (sim->path_id);
116 static __inline const char *
117 cam_sim_name(struct cam_sim *sim)
119 return (sim->sim_name);
122 static __inline void *
123 cam_sim_softc(struct cam_sim *sim)
128 static __inline u_int32_t
129 cam_sim_unit(struct cam_sim *sim)
131 return (sim->unit_number);
134 static __inline u_int32_t
135 cam_sim_bus(struct cam_sim *sim)
137 return (sim->bus_id);
141 #endif /* _CAM_CAM_SIM_H */