1/*- 2 * Data structures and definitions for CAM peripheral ("type") drivers. 3 * 4 * Copyright (c) 1997, 1998 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 CAM peripheral ("type") drivers. 3 * 4 * Copyright (c) 1997, 1998 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_periph.h 139743 2005-01-05 22:34:37Z imp $
| 28 * $FreeBSD: head/sys/cam/cam_periph.h 168752 2007-04-15 08:49:19Z scottl $
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29 */ 30 31#ifndef _CAM_CAM_PERIPH_H 32#define _CAM_CAM_PERIPH_H 1 33 34#include <sys/queue.h> 35 36#ifdef _KERNEL 37 38struct devstat; 39 40extern struct cam_periph *xpt_periph; 41 42extern struct periph_driver **periph_drivers; 43void periphdriver_register(void *); 44 45#include <sys/module.h> 46#define PERIPHDRIVER_DECLARE(name, driver) \ 47 static int name ## _modevent(module_t mod, int type, void *data) \ 48 { \ 49 switch (type) { \ 50 case MOD_LOAD: \ 51 periphdriver_register(data); \ 52 break; \ 53 case MOD_UNLOAD: \ 54 printf(#name " module unload - not possible for this module type\n"); \ 55 return EINVAL; \ 56 default: \ 57 return EOPNOTSUPP; \ 58 } \ 59 return 0; \ 60 } \ 61 static moduledata_t name ## _mod = { \ 62 #name, \ 63 name ## _modevent, \ 64 (void *)&driver \ 65 }; \ 66 DECLARE_MODULE(name, name ## _mod, SI_SUB_DRIVERS, SI_ORDER_ANY); \ 67 MODULE_DEPEND(name, cam, 1, 1, 1) 68 69typedef void (periph_init_t)(void); /* 70 * Callback informing the peripheral driver 71 * it can perform it's initialization since 72 * the XPT is now fully initialized. 73 */ 74typedef periph_init_t *periph_init_func_t; 75 76struct periph_driver { 77 periph_init_func_t init; 78 char *driver_name; 79 TAILQ_HEAD(,cam_periph) units; 80 u_int generation; 81}; 82 83typedef enum { 84 CAM_PERIPH_BIO 85} cam_periph_type; 86 87/* Generically usefull offsets into the peripheral private area */ 88#define ppriv_ptr0 periph_priv.entries[0].ptr 89#define ppriv_ptr1 periph_priv.entries[1].ptr 90#define ppriv_field0 periph_priv.entries[0].field 91#define ppriv_field1 periph_priv.entries[1].field 92 93typedef void periph_start_t (struct cam_periph *periph, 94 union ccb *start_ccb); 95typedef cam_status periph_ctor_t (struct cam_periph *periph, 96 void *arg); 97typedef void periph_oninv_t (struct cam_periph *periph); 98typedef void periph_dtor_t (struct cam_periph *periph); 99struct cam_periph { 100 cam_pinfo pinfo; 101 periph_start_t *periph_start; 102 periph_oninv_t *periph_oninval; 103 periph_dtor_t *periph_dtor; 104 char *periph_name; 105 struct cam_path *path; /* Compiled path to device */ 106 void *softc;
| 29 */ 30 31#ifndef _CAM_CAM_PERIPH_H 32#define _CAM_CAM_PERIPH_H 1 33 34#include <sys/queue.h> 35 36#ifdef _KERNEL 37 38struct devstat; 39 40extern struct cam_periph *xpt_periph; 41 42extern struct periph_driver **periph_drivers; 43void periphdriver_register(void *); 44 45#include <sys/module.h> 46#define PERIPHDRIVER_DECLARE(name, driver) \ 47 static int name ## _modevent(module_t mod, int type, void *data) \ 48 { \ 49 switch (type) { \ 50 case MOD_LOAD: \ 51 periphdriver_register(data); \ 52 break; \ 53 case MOD_UNLOAD: \ 54 printf(#name " module unload - not possible for this module type\n"); \ 55 return EINVAL; \ 56 default: \ 57 return EOPNOTSUPP; \ 58 } \ 59 return 0; \ 60 } \ 61 static moduledata_t name ## _mod = { \ 62 #name, \ 63 name ## _modevent, \ 64 (void *)&driver \ 65 }; \ 66 DECLARE_MODULE(name, name ## _mod, SI_SUB_DRIVERS, SI_ORDER_ANY); \ 67 MODULE_DEPEND(name, cam, 1, 1, 1) 68 69typedef void (periph_init_t)(void); /* 70 * Callback informing the peripheral driver 71 * it can perform it's initialization since 72 * the XPT is now fully initialized. 73 */ 74typedef periph_init_t *periph_init_func_t; 75 76struct periph_driver { 77 periph_init_func_t init; 78 char *driver_name; 79 TAILQ_HEAD(,cam_periph) units; 80 u_int generation; 81}; 82 83typedef enum { 84 CAM_PERIPH_BIO 85} cam_periph_type; 86 87/* Generically usefull offsets into the peripheral private area */ 88#define ppriv_ptr0 periph_priv.entries[0].ptr 89#define ppriv_ptr1 periph_priv.entries[1].ptr 90#define ppriv_field0 periph_priv.entries[0].field 91#define ppriv_field1 periph_priv.entries[1].field 92 93typedef void periph_start_t (struct cam_periph *periph, 94 union ccb *start_ccb); 95typedef cam_status periph_ctor_t (struct cam_periph *periph, 96 void *arg); 97typedef void periph_oninv_t (struct cam_periph *periph); 98typedef void periph_dtor_t (struct cam_periph *periph); 99struct cam_periph { 100 cam_pinfo pinfo; 101 periph_start_t *periph_start; 102 periph_oninv_t *periph_oninval; 103 periph_dtor_t *periph_dtor; 104 char *periph_name; 105 struct cam_path *path; /* Compiled path to device */ 106 void *softc;
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| 107 struct cam_sim *sim;
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107 u_int32_t unit_number; 108 cam_periph_type type; 109 u_int32_t flags; 110#define CAM_PERIPH_RUNNING 0x01 111#define CAM_PERIPH_LOCKED 0x02 112#define CAM_PERIPH_LOCK_WANTED 0x04 113#define CAM_PERIPH_INVALID 0x08 114#define CAM_PERIPH_NEW_DEV_FOUND 0x10 115#define CAM_PERIPH_RECOVERY_INPROG 0x20
| 108 u_int32_t unit_number; 109 cam_periph_type type; 110 u_int32_t flags; 111#define CAM_PERIPH_RUNNING 0x01 112#define CAM_PERIPH_LOCKED 0x02 113#define CAM_PERIPH_LOCK_WANTED 0x04 114#define CAM_PERIPH_INVALID 0x08 115#define CAM_PERIPH_NEW_DEV_FOUND 0x10 116#define CAM_PERIPH_RECOVERY_INPROG 0x20
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| 117#define CAM_PERIPH_POLLED 0x40
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116 u_int32_t immediate_priority; 117 u_int32_t refcount; 118 SLIST_HEAD(, ccb_hdr) ccb_list; /* For "immediate" requests */ 119 SLIST_ENTRY(cam_periph) periph_links; 120 TAILQ_ENTRY(cam_periph) unit_links; 121 ac_callback_t *deferred_callback; 122 ac_code deferred_ac; 123}; 124 125#define CAM_PERIPH_MAXMAPS 2 126 127struct cam_periph_map_info { 128 int num_bufs_used; 129 struct buf *bp[CAM_PERIPH_MAXMAPS]; 130}; 131 132cam_status cam_periph_alloc(periph_ctor_t *periph_ctor, 133 periph_oninv_t *periph_oninvalidate, 134 periph_dtor_t *periph_dtor, 135 periph_start_t *periph_start, 136 char *name, cam_periph_type type, struct cam_path *, 137 ac_callback_t *, ac_code, void *arg); 138struct cam_periph *cam_periph_find(struct cam_path *path, char *name);
| 118 u_int32_t immediate_priority; 119 u_int32_t refcount; 120 SLIST_HEAD(, ccb_hdr) ccb_list; /* For "immediate" requests */ 121 SLIST_ENTRY(cam_periph) periph_links; 122 TAILQ_ENTRY(cam_periph) unit_links; 123 ac_callback_t *deferred_callback; 124 ac_code deferred_ac; 125}; 126 127#define CAM_PERIPH_MAXMAPS 2 128 129struct cam_periph_map_info { 130 int num_bufs_used; 131 struct buf *bp[CAM_PERIPH_MAXMAPS]; 132}; 133 134cam_status cam_periph_alloc(periph_ctor_t *periph_ctor, 135 periph_oninv_t *periph_oninvalidate, 136 periph_dtor_t *periph_dtor, 137 periph_start_t *periph_start, 138 char *name, cam_periph_type type, struct cam_path *, 139 ac_callback_t *, ac_code, void *arg); 140struct cam_periph *cam_periph_find(struct cam_path *path, char *name);
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139int cam_periph_lock(struct cam_periph *periph, int priority);
| 141void cam_periph_lock(struct cam_periph *periph);
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140void cam_periph_unlock(struct cam_periph *periph); 141cam_status cam_periph_acquire(struct cam_periph *periph); 142void cam_periph_release(struct cam_periph *periph);
| 142void cam_periph_unlock(struct cam_periph *periph); 143cam_status cam_periph_acquire(struct cam_periph *periph); 144void cam_periph_release(struct cam_periph *periph);
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| 145int cam_periph_hold(struct cam_periph *periph, int priority); 146void cam_periph_unhold(struct cam_periph *periph);
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143void cam_periph_invalidate(struct cam_periph *periph); 144int cam_periph_mapmem(union ccb *ccb, 145 struct cam_periph_map_info *mapinfo); 146void cam_periph_unmapmem(union ccb *ccb, 147 struct cam_periph_map_info *mapinfo); 148union ccb *cam_periph_getccb(struct cam_periph *periph, 149 u_int32_t priority); 150void cam_periph_ccbwait(union ccb *ccb); 151int cam_periph_runccb(union ccb *ccb, 152 int (*error_routine)(union ccb *ccb, 153 cam_flags camflags, 154 u_int32_t sense_flags), 155 cam_flags camflags, u_int32_t sense_flags, 156 struct devstat *ds); 157int cam_periph_ioctl(struct cam_periph *periph, int cmd, 158 caddr_t addr, 159 int (*error_routine)(union ccb *ccb, 160 cam_flags camflags, 161 u_int32_t sense_flags)); 162void cam_freeze_devq(struct cam_path *path); 163u_int32_t cam_release_devq(struct cam_path *path, u_int32_t relsim_flags, 164 u_int32_t opening_reduction, u_int32_t timeout, 165 int getcount_only); 166void cam_periph_async(struct cam_periph *periph, u_int32_t code, 167 struct cam_path *path, void *arg); 168void cam_periph_bus_settle(struct cam_periph *periph, 169 u_int bus_settle_ms); 170void cam_periph_freeze_after_event(struct cam_periph *periph, 171 struct timeval* event_time, 172 u_int duration_ms); 173int cam_periph_error(union ccb *ccb, cam_flags camflags, 174 u_int32_t sense_flags, union ccb *save_ccb); 175 176#endif /* _KERNEL */ 177#endif /* _CAM_CAM_PERIPH_H */
| 147void cam_periph_invalidate(struct cam_periph *periph); 148int cam_periph_mapmem(union ccb *ccb, 149 struct cam_periph_map_info *mapinfo); 150void cam_periph_unmapmem(union ccb *ccb, 151 struct cam_periph_map_info *mapinfo); 152union ccb *cam_periph_getccb(struct cam_periph *periph, 153 u_int32_t priority); 154void cam_periph_ccbwait(union ccb *ccb); 155int cam_periph_runccb(union ccb *ccb, 156 int (*error_routine)(union ccb *ccb, 157 cam_flags camflags, 158 u_int32_t sense_flags), 159 cam_flags camflags, u_int32_t sense_flags, 160 struct devstat *ds); 161int cam_periph_ioctl(struct cam_periph *periph, int cmd, 162 caddr_t addr, 163 int (*error_routine)(union ccb *ccb, 164 cam_flags camflags, 165 u_int32_t sense_flags)); 166void cam_freeze_devq(struct cam_path *path); 167u_int32_t cam_release_devq(struct cam_path *path, u_int32_t relsim_flags, 168 u_int32_t opening_reduction, u_int32_t timeout, 169 int getcount_only); 170void cam_periph_async(struct cam_periph *periph, u_int32_t code, 171 struct cam_path *path, void *arg); 172void cam_periph_bus_settle(struct cam_periph *periph, 173 u_int bus_settle_ms); 174void cam_periph_freeze_after_event(struct cam_periph *periph, 175 struct timeval* event_time, 176 u_int duration_ms); 177int cam_periph_error(union ccb *ccb, cam_flags camflags, 178 u_int32_t sense_flags, union ccb *save_ccb); 179 180#endif /* _KERNEL */ 181#endif /* _CAM_CAM_PERIPH_H */
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