2 * Common functions 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.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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28 * $FreeBSD: src/sys/cam/cam_sim.c,v 1.3 1999/08/28 00:40:42 peter Exp $
29 * $DragonFly: src/sys/bus/cam/cam_sim.c,v 1.2 2003/06/17 04:28:18 dillon Exp $
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/malloc.h>
37 #include <cam/cam_ccb.h>
38 #include <cam/cam_sim.h>
39 #include <cam/cam_queue.h>
41 #define CAM_PATH_ANY (u_int32_t)-1
44 cam_simq_alloc(u_int32_t max_sim_transactions)
46 return (cam_devq_alloc(/*size*/0, max_sim_transactions));
50 cam_simq_free(struct cam_devq *devq)
56 cam_sim_alloc(sim_action_func sim_action, sim_poll_func sim_poll,
57 char *sim_name, void *softc, u_int32_t unit,
58 int max_dev_transactions,
59 int max_tagged_dev_transactions, struct cam_devq *queue)
64 * If this is the xpt layer creating a sim, then it's OK
65 * to wait for an allocation.
67 * XXX Should we pass in a flag to indicate that wait is OK?
69 if (strcmp(sim_name, "xpt") == 0)
70 sim = (struct cam_sim *)malloc(sizeof(struct cam_sim),
73 sim = (struct cam_sim *)malloc(sizeof(struct cam_sim),
77 sim->sim_action = sim_action;
78 sim->sim_poll = sim_poll;
79 sim->sim_name = sim_name;
81 sim->path_id = CAM_PATH_ANY;
82 sim->unit_number = unit;
83 sim->bus_id = 0; /* set in xpt_bus_register */
84 sim->max_tagged_dev_openings = max_tagged_dev_transactions;
85 sim->max_dev_openings = max_dev_transactions;
87 callout_handle_init(&sim->c_handle);
95 cam_sim_free(struct cam_sim *sim, int free_devq)
98 cam_simq_free(sim->devq);
103 cam_sim_set_path(struct cam_sim *sim, u_int32_t path_id)
105 sim->path_id = path_id;