1/*- 2 * Data structures and definitions for SCSI Interface Modules (SIMs). 3 * 4 * Copyright (c) 1997 Justin T. Gibbs. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 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. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 20 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 *
| 1/*- 2 * Data structures and definitions for SCSI Interface Modules (SIMs). 3 * 4 * Copyright (c) 1997 Justin T. Gibbs. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 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. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 20 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 *
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28 * $FreeBSD: head/sys/cam/cam_sim.h 168752 2007-04-15 08:49:19Z scottl $
| 28 * $FreeBSD: head/sys/cam/cam_sim.h 168864 2007-04-19 14:28:43Z scottl $
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29 */ 30 31#ifndef _CAM_CAM_SIM_H 32#define _CAM_CAM_SIM_H 1 33 34#ifdef _KERNEL 35 36/* 37 * The sim driver creates a sim for each controller. The sim device 38 * queue is separately created in order to allow resource sharing between 39 * sims. For instance, a driver may create one sim for each channel of 40 * a multi-channel controller and use the same queue for each channel. 41 * In this way, the queue resources are shared across all the channels 42 * of the multi-channel controller. 43 */ 44 45struct cam_sim; 46struct cam_devq; 47 48typedef void (*sim_action_func)(struct cam_sim *sim, union ccb *ccb); 49typedef void (*sim_poll_func)(struct cam_sim *sim); 50 51struct cam_devq * cam_simq_alloc(u_int32_t max_sim_transactions); 52void cam_simq_free(struct cam_devq *devq); 53 54struct cam_sim * cam_sim_alloc(sim_action_func sim_action, 55 sim_poll_func sim_poll, 56 const char *sim_name, 57 void *softc, 58 u_int32_t unit, 59 struct mtx *mtx, 60 int max_dev_transactions, 61 int max_tagged_dev_transactions, 62 struct cam_devq *queue); 63void cam_sim_free(struct cam_sim *sim, int free_devq); 64 65/* Optional sim attributes may be set with these. */ 66void cam_sim_set_path(struct cam_sim *sim, u_int32_t path_id); 67 68 69 70/* Convenience routines for accessing sim attributes. */ 71static __inline u_int32_t cam_sim_path(struct cam_sim *sim); 72static __inline const char * cam_sim_name(struct cam_sim *sim); 73static __inline void * cam_sim_softc(struct cam_sim *sim); 74static __inline u_int32_t cam_sim_unit(struct cam_sim *sim); 75static __inline u_int32_t cam_sim_bus(struct cam_sim *sim); 76 77 78 79/* Generically useful offsets into the sim private area */ 80#define spriv_ptr0 sim_priv.entries[0].ptr 81#define spriv_ptr1 sim_priv.entries[1].ptr 82#define spriv_field0 sim_priv.entries[0].field 83#define spriv_field1 sim_priv.entries[1].field 84 85/* 86 * The sim driver should not access anything directly from this 87 * structure. 88 */ 89struct cam_sim { 90 sim_action_func sim_action; 91 sim_poll_func sim_poll; 92 const char *sim_name; 93 void *softc; 94 struct mtx *mtx;
| 29 */ 30 31#ifndef _CAM_CAM_SIM_H 32#define _CAM_CAM_SIM_H 1 33 34#ifdef _KERNEL 35 36/* 37 * The sim driver creates a sim for each controller. The sim device 38 * queue is separately created in order to allow resource sharing between 39 * sims. For instance, a driver may create one sim for each channel of 40 * a multi-channel controller and use the same queue for each channel. 41 * In this way, the queue resources are shared across all the channels 42 * of the multi-channel controller. 43 */ 44 45struct cam_sim; 46struct cam_devq; 47 48typedef void (*sim_action_func)(struct cam_sim *sim, union ccb *ccb); 49typedef void (*sim_poll_func)(struct cam_sim *sim); 50 51struct cam_devq * cam_simq_alloc(u_int32_t max_sim_transactions); 52void cam_simq_free(struct cam_devq *devq); 53 54struct cam_sim * cam_sim_alloc(sim_action_func sim_action, 55 sim_poll_func sim_poll, 56 const char *sim_name, 57 void *softc, 58 u_int32_t unit, 59 struct mtx *mtx, 60 int max_dev_transactions, 61 int max_tagged_dev_transactions, 62 struct cam_devq *queue); 63void cam_sim_free(struct cam_sim *sim, int free_devq); 64 65/* Optional sim attributes may be set with these. */ 66void cam_sim_set_path(struct cam_sim *sim, u_int32_t path_id); 67 68 69 70/* Convenience routines for accessing sim attributes. */ 71static __inline u_int32_t cam_sim_path(struct cam_sim *sim); 72static __inline const char * cam_sim_name(struct cam_sim *sim); 73static __inline void * cam_sim_softc(struct cam_sim *sim); 74static __inline u_int32_t cam_sim_unit(struct cam_sim *sim); 75static __inline u_int32_t cam_sim_bus(struct cam_sim *sim); 76 77 78 79/* Generically useful offsets into the sim private area */ 80#define spriv_ptr0 sim_priv.entries[0].ptr 81#define spriv_ptr1 sim_priv.entries[1].ptr 82#define spriv_field0 sim_priv.entries[0].field 83#define spriv_field1 sim_priv.entries[1].field 84 85/* 86 * The sim driver should not access anything directly from this 87 * structure. 88 */ 89struct cam_sim { 90 sim_action_func sim_action; 91 sim_poll_func sim_poll; 92 const char *sim_name; 93 void *softc; 94 struct mtx *mtx;
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| 95 TAILQ_HEAD(, ccb_hdr) sim_doneq; 96 TAILQ_ENTRY(cam_sim) links;
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95 u_int32_t path_id;/* The Boot device may set this to 0? */ 96 u_int32_t unit_number; 97 u_int32_t bus_id; 98 int max_tagged_dev_openings; 99 int max_dev_openings; 100 u_int32_t flags; 101#define CAM_SIM_REL_TIMEOUT_PENDING 0x01 102#define CAM_SIM_MPSAFE 0x02
| 97 u_int32_t path_id;/* The Boot device may set this to 0? */ 98 u_int32_t unit_number; 99 u_int32_t bus_id; 100 int max_tagged_dev_openings; 101 int max_dev_openings; 102 u_int32_t flags; 103#define CAM_SIM_REL_TIMEOUT_PENDING 0x01 104#define CAM_SIM_MPSAFE 0x02
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| 105#define CAM_SIM_ON_DONEQ 0x04
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103 struct callout callout; 104 struct cam_devq *devq; /* Device Queue to use for this SIM */ 105 106 /* "Pool" of inactive ccbs managed by xpt_alloc_ccb and xpt_free_ccb */ 107 SLIST_HEAD(,ccb_hdr) ccb_freeq; 108 /* 109 * Maximum size of ccb pool. Modified as devices are added/removed 110 * or have their * opening counts changed. 111 */ 112 u_int max_ccbs; 113 /* Current count of allocated ccbs */ 114 u_int ccb_count; 115 116}; 117 118#define CAM_SIM_LOCK(sim) mtx_lock((sim)->mtx); 119#define CAM_SIM_UNLOCK(sim) mtx_unlock((sim)->mtx); 120 121static __inline u_int32_t 122cam_sim_path(struct cam_sim *sim) 123{ 124 return (sim->path_id); 125} 126 127static __inline const char * 128cam_sim_name(struct cam_sim *sim) 129{ 130 return (sim->sim_name); 131} 132 133static __inline void * 134cam_sim_softc(struct cam_sim *sim) 135{ 136 return (sim->softc); 137} 138 139static __inline u_int32_t 140cam_sim_unit(struct cam_sim *sim) 141{ 142 return (sim->unit_number); 143} 144 145static __inline u_int32_t 146cam_sim_bus(struct cam_sim *sim) 147{ 148 return (sim->bus_id); 149} 150 151#endif /* _KERNEL */ 152#endif /* _CAM_CAM_SIM_H */
| 106 struct callout callout; 107 struct cam_devq *devq; /* Device Queue to use for this SIM */ 108 109 /* "Pool" of inactive ccbs managed by xpt_alloc_ccb and xpt_free_ccb */ 110 SLIST_HEAD(,ccb_hdr) ccb_freeq; 111 /* 112 * Maximum size of ccb pool. Modified as devices are added/removed 113 * or have their * opening counts changed. 114 */ 115 u_int max_ccbs; 116 /* Current count of allocated ccbs */ 117 u_int ccb_count; 118 119}; 120 121#define CAM_SIM_LOCK(sim) mtx_lock((sim)->mtx); 122#define CAM_SIM_UNLOCK(sim) mtx_unlock((sim)->mtx); 123 124static __inline u_int32_t 125cam_sim_path(struct cam_sim *sim) 126{ 127 return (sim->path_id); 128} 129 130static __inline const char * 131cam_sim_name(struct cam_sim *sim) 132{ 133 return (sim->sim_name); 134} 135 136static __inline void * 137cam_sim_softc(struct cam_sim *sim) 138{ 139 return (sim->softc); 140} 141 142static __inline u_int32_t 143cam_sim_unit(struct cam_sim *sim) 144{ 145 return (sim->unit_number); 146} 147 148static __inline u_int32_t 149cam_sim_bus(struct cam_sim *sim) 150{ 151 return (sim->bus_id); 152} 153 154#endif /* _KERNEL */ 155#endif /* _CAM_CAM_SIM_H */
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