2 * Data structures and definitions for SCSI Interface Modules (SIMs).
4 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
6 * Copyright (c) 1997 Justin T. Gibbs.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions, and the following disclaimer,
14 * without modification, immediately at the beginning of the file.
15 * 2. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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33 #ifndef _CAM_CAM_SIM_H
34 #define _CAM_CAM_SIM_H 1
39 * The sim driver creates a sim for each controller. The sim device
40 * queue is separately created in order to allow resource sharing between
41 * sims. For instance, a driver may create one sim for each channel of
42 * a multi-channel controller and use the same queue for each channel.
43 * In this way, the queue resources are shared across all the channels
44 * of the multi-channel controller.
50 typedef void (*sim_action_func)(struct cam_sim *sim, union ccb *ccb);
51 typedef void (*sim_poll_func)(struct cam_sim *sim);
53 struct cam_devq * cam_simq_alloc(u_int32_t max_sim_transactions);
54 void cam_simq_free(struct cam_devq *devq);
56 struct cam_sim * cam_sim_alloc(sim_action_func sim_action,
57 sim_poll_func sim_poll,
62 int max_dev_transactions,
63 int max_tagged_dev_transactions,
64 struct cam_devq *queue);
65 struct cam_sim * cam_sim_alloc_dev(sim_action_func sim_action,
66 sim_poll_func sim_poll,
71 int max_dev_transactions,
72 int max_tagged_dev_transactions,
73 struct cam_devq *queue);
74 void cam_sim_free(struct cam_sim *sim, int free_devq);
75 void cam_sim_hold(struct cam_sim *sim);
76 void cam_sim_release(struct cam_sim *sim);
78 /* Optional sim attributes may be set with these. */
79 void cam_sim_set_path(struct cam_sim *sim, u_int32_t path_id);
81 /* Generically useful offsets into the sim private area */
82 #define spriv_ptr0 sim_priv.entries[0].ptr
83 #define spriv_ptr1 sim_priv.entries[1].ptr
84 #define spriv_field0 sim_priv.entries[0].field
85 #define spriv_field1 sim_priv.entries[1].field
88 * The sim driver should not access anything directly from this
92 sim_action_func sim_action;
93 sim_poll_func sim_poll;
97 TAILQ_HEAD(, ccb_hdr) sim_doneq;
98 TAILQ_ENTRY(cam_sim) links;
99 u_int32_t path_id;/* The Boot device may set this to 0? */
100 u_int32_t unit_number;
102 int max_tagged_dev_openings;
103 int max_dev_openings;
105 #define CAM_SIM_REL_TIMEOUT_PENDING 0x01
106 #define CAM_SIM_MPSAFE 0x02
107 struct callout callout;
108 struct cam_devq *devq; /* Device Queue to use for this SIM */
109 int refcount; /* References to the SIM. */
110 device_t sim_dev; /* For attached peripherals. */
113 #define CAM_SIM_LOCK(sim) mtx_lock((sim)->mtx)
114 #define CAM_SIM_UNLOCK(sim) mtx_unlock((sim)->mtx)
116 static __inline u_int32_t
117 cam_sim_path(const struct cam_sim *sim)
119 return (sim->path_id);
122 static __inline const char *
123 cam_sim_name(const struct cam_sim *sim)
125 return (sim->sim_name);
128 static __inline void *
129 cam_sim_softc(const struct cam_sim *sim)
134 static __inline u_int32_t
135 cam_sim_unit(const struct cam_sim *sim)
137 return (sim->unit_number);
140 static __inline u_int32_t
141 cam_sim_bus(const struct cam_sim *sim)
143 return (sim->bus_id);
147 #endif /* _CAM_CAM_SIM_H */