sys/cam/cam_sim.c

73 	struct cam_sim *sim;
75 	sim = malloc(sizeof(struct cam_sim), M_CAMSIM, M_ZERO | M_NOWAIT);
76 	if (sim == NULL)
79 	sim->sim_action = sim_action;
80 	sim->sim_poll = sim_poll;
81 	sim->sim_name = sim_name;
82 	sim->softc = softc;
83 	sim->path_id = CAM_PATH_ANY;
84 	sim->sim_dev = NULL;	/* set only by cam_sim_alloc_dev */
85 	sim->unit_number = unit;
86 	sim->bus_id = 0;	/* set in xpt_bus_register */
87 	sim->max_tagged_dev_openings = max_tagged_dev_transactions;
88 	sim->max_dev_openings = max_dev_transactions;
89 	sim->flags = 0;
90 	sim->refcount = 1;
91 	sim->devq = queue;
92 	sim->mtx = mtx;
93 	callout_init(&sim->callout, 1);
94 	return (sim);
103 	struct cam_sim *sim;
108 	sim = cam_sim_alloc(sim_action, sim_poll, sim_name, softc,
111 	if (sim != NULL)
112 		sim->sim_dev = dev;
113 	return (sim);
117 cam_sim_free(struct cam_sim *sim, int free_devq)
122 	if (sim->mtx == NULL) {
126 		mtx = sim->mtx;
129 	KASSERT(sim->refcount >= 1, ("sim->refcount >= 1"));
130 	sim->refcount--;
131 	if (sim->refcount > 0) {
132 		error = msleep(sim, mtx, PRIBIO, "simfree", 0);
135 	KASSERT(sim->refcount == 0, ("sim->refcount == 0"));
136 	if (mtx == &cam_sim_free_mtx)	/* sim->mtx == NULL */
140 		cam_simq_free(sim->devq);
141 	free(sim, M_CAMSIM);
145 cam_sim_release(struct cam_sim *sim)
149 	if (sim->mtx == NULL)
151 	else if (!mtx_owned(sim->mtx))
152 		mtx = sim->mtx;
157 	KASSERT(sim->refcount >= 1, ("sim->refcount >= 1"));
158 	sim->refcount--;
159 	if (sim->refcount == 0)
160 		wakeup(sim);
166 cam_sim_hold(struct cam_sim *sim)
170 	if (sim->mtx == NULL)
172 	else if (!mtx_owned(sim->mtx))
173 		mtx = sim->mtx;
178 	KASSERT(sim->refcount >= 1, ("sim->refcount >= 1"));
179 	sim->refcount++;
185 cam_sim_set_path(struct cam_sim *sim, u_int32_t path_id)
187 	sim->path_id = path_id;