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bus.h (58884) bus.h (59093)
1/*-
2 * Copyright (c) 1997,1998 Doug Rabson
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
1/*-
2 * Copyright (c) 1997,1998 Doug Rabson
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: head/sys/sys/bus.h 58884 2000-04-01 06:06:37Z imp $
26 * $FreeBSD: head/sys/sys/bus.h 59093 2000-04-08 14:17:18Z dfr $
27 */
28
29#ifndef _SYS_BUS_H_
30#define _SYS_BUS_H_
31
32#ifdef _KERNEL
33
34#include <sys/queue.h>
27 */
28
29#ifndef _SYS_BUS_H_
30#define _SYS_BUS_H_
31
32#ifdef _KERNEL
33
34#include <sys/queue.h>
35#include <sys/kobj.h>
35
36/*
37 * Forward declarations
38 */
39typedef struct device *device_t;
40typedef struct driver driver_t;
36
37/*
38 * Forward declarations
39 */
40typedef struct device *device_t;
41typedef struct driver driver_t;
41typedef struct device_method device_method_t;
42typedef struct devclass *devclass_t;
42typedef struct devclass *devclass_t;
43typedef struct device_ops *device_ops_t;
44typedef struct device_op_desc *device_op_desc_t;
43#define device_method_t kobj_method_t
45
46typedef void driver_intr_t(void*);
47
48/*
49 * We define this in terms of bits because some devices may belong
50 * to multiple classes (and therefore need to be included in
51 * multiple interrupt masks, which is what this really serves to
52 * indicate. Buses which do interrupt remapping will want to
53 * change their type to reflect what sort of devices are underneath.
54 */
55enum intr_type {
56 INTR_TYPE_TTY = 1,
57 INTR_TYPE_BIO = 2,
58 INTR_TYPE_NET = 4,
59 INTR_TYPE_CAM = 8,
60 INTR_TYPE_MISC = 16,
61 INTR_TYPE_FAST = 128
62};
63
64typedef int (*devop_t)(void);
65
44
45typedef void driver_intr_t(void*);
46
47/*
48 * We define this in terms of bits because some devices may belong
49 * to multiple classes (and therefore need to be included in
50 * multiple interrupt masks, which is what this really serves to
51 * indicate. Buses which do interrupt remapping will want to
52 * change their type to reflect what sort of devices are underneath.
53 */
54enum intr_type {
55 INTR_TYPE_TTY = 1,
56 INTR_TYPE_BIO = 2,
57 INTR_TYPE_NET = 4,
58 INTR_TYPE_CAM = 8,
59 INTR_TYPE_MISC = 16,
60 INTR_TYPE_FAST = 128
61};
62
63typedef int (*devop_t)(void);
64
66struct device_method {
67 device_op_desc_t desc;
68 devop_t func;
69};
70
71struct driver {
65struct driver {
72 const char *name; /* driver name */
73 device_method_t *methods; /* method table */
74 size_t softc; /* size of device softc struct */
66 KOBJ_CLASS_FIELDS;
75 void *priv; /* driver private data */
67 void *priv; /* driver private data */
76 device_ops_t ops; /* compiled method table */
77 int refs; /* # devclasses containing driver */
78};
79
80typedef enum device_state {
81 DS_NOTPRESENT, /* not probed or probe failed */
82 DS_ALIVE, /* probe succeeded */
83 DS_ATTACHED, /* attach method called */
84 DS_BUSY /* device is open */
85} device_state_t;
86
87/*
88 * Definitions for drivers which need to keep simple lists of resources
89 * for their child devices.
90 */
91struct resource;
92
93struct resource_list_entry {
94 SLIST_ENTRY(resource_list_entry) link;
95 int type; /* type argument to alloc_resource */
96 int rid; /* resource identifier */
97 struct resource *res; /* the real resource when allocated */
98 u_long start; /* start of resource range */
99 u_long end; /* end of resource range */
100 u_long count; /* count within range */
101};
102SLIST_HEAD(resource_list, resource_list_entry);
103
104/*
105 * Initialise a resource list.
106 */
107void resource_list_init(struct resource_list *rl);
108
109/*
110 * Reclaim memory used by a resource list.
111 */
112void resource_list_free(struct resource_list *rl);
113
114/*
115 * Add a resource entry or modify an existing entry if one exists with
116 * the same type and rid.
117 */
118void resource_list_add(struct resource_list *rl,
119 int type, int rid,
120 u_long start, u_long end, u_long count);
121
122/*
123 * Find a resource entry by type and rid.
124 */
125struct resource_list_entry*
126 resource_list_find(struct resource_list *rl,
127 int type, int rid);
128
129/*
130 * Delete a resource entry.
131 */
132void resource_list_delete(struct resource_list *rl,
133 int type, int rid);
134
135/*
136 * Implement BUS_ALLOC_RESOURCE by looking up a resource from the list
137 * and passing the allocation up to the parent of bus. This assumes
138 * that the first entry of device_get_ivars(child) is a struct
139 * resource_list. This also handles 'passthrough' allocations where a
140 * child is a remote descendant of bus by passing the allocation up to
141 * the parent of bus.
142 */
143struct resource *
144 resource_list_alloc(struct resource_list *rl,
145 device_t bus, device_t child,
146 int type, int *rid,
147 u_long start, u_long end,
148 u_long count, u_int flags);
149
150/*
151 * Implement BUS_RELEASE_RESOURCE.
152 */
153int resource_list_release(struct resource_list *rl,
154 device_t bus, device_t child,
155 int type, int rid, struct resource *res);
156
157/*
158 * The root bus, to which all top-level busses are attached.
159 */
160extern device_t root_bus;
161extern devclass_t root_devclass;
162void root_bus_configure(void);
163
164/*
165 * Useful functions for implementing busses.
166 */
167
168int bus_generic_activate_resource(device_t dev, device_t child, int type,
169 int rid, struct resource *r);
170struct resource *bus_generic_alloc_resource(device_t bus, device_t child,
171 int type, int *rid,
172 u_long start, u_long end,
173 u_long count, u_int flags);
174int bus_generic_attach(device_t dev);
175int bus_generic_deactivate_resource(device_t dev, device_t child, int type,
176 int rid, struct resource *r);
177int bus_generic_detach(device_t dev);
178void bus_generic_driver_added(device_t dev, driver_t *driver);
179int bus_print_child_header(device_t dev, device_t child);
180int bus_print_child_footer(device_t dev, device_t child);
181int bus_generic_print_child(device_t dev, device_t child);
182int bus_generic_probe(device_t dev);
183int bus_generic_read_ivar(device_t dev, device_t child, int which,
184 uintptr_t *result);
185int bus_generic_release_resource(device_t bus, device_t child,
186 int type, int rid, struct resource *r);
187int bus_generic_resume(device_t dev);
188int bus_generic_setup_intr(device_t dev, device_t child,
189 struct resource *irq, int flags,
190 driver_intr_t *intr, void *arg, void **cookiep);
191int bus_generic_shutdown(device_t dev);
192int bus_generic_suspend(device_t dev);
193int bus_generic_teardown_intr(device_t dev, device_t child,
194 struct resource *irq, void *cookie);
195int bus_generic_write_ivar(device_t dev, device_t child, int which,
196 uintptr_t value);
197
198/*
199 * Wrapper functions for the BUS_*_RESOURCE methods to make client code
200 * a little simpler.
201 */
202struct resource *bus_alloc_resource(device_t dev, int type, int *rid,
203 u_long start, u_long end, u_long count,
204 u_int flags);
205int bus_activate_resource(device_t dev, int type, int rid,
206 struct resource *r);
207int bus_deactivate_resource(device_t dev, int type, int rid,
208 struct resource *r);
209int bus_release_resource(device_t dev, int type, int rid,
210 struct resource *r);
211int bus_setup_intr(device_t dev, struct resource *r, int flags,
212 driver_intr_t handler, void *arg, void **cookiep);
213int bus_teardown_intr(device_t dev, struct resource *r, void *cookie);
214int bus_set_resource(device_t dev, int type, int rid,
215 u_long start, u_long count);
216int bus_get_resource(device_t dev, int type, int rid,
217 u_long *startp, u_long *countp);
218u_long bus_get_resource_start(device_t dev, int type, int rid);
219u_long bus_get_resource_count(device_t dev, int type, int rid);
220void bus_delete_resource(device_t dev, int type, int rid);
221
222/*
223 * Access functions for device.
224 */
225device_t device_add_child(device_t dev, const char *name, int unit);
226device_t device_add_child_ordered(device_t dev, int order,
227 const char *name, int unit);
228void device_busy(device_t dev);
229int device_delete_child(device_t dev, device_t child);
230int device_detach(device_t dev);
231void device_disable(device_t dev);
232void device_enable(device_t dev);
233device_t device_find_child(device_t dev, const char *classname,
234 int unit);
235const char *device_get_desc(device_t dev);
236devclass_t device_get_devclass(device_t dev);
237driver_t *device_get_driver(device_t dev);
238u_int32_t device_get_flags(device_t dev);
239device_t device_get_parent(device_t dev);
240int device_get_children(device_t dev, device_t **listp, int *countp);
241void *device_get_ivars(device_t dev);
242void device_set_ivars(device_t dev, void *ivars);
243const char *device_get_name(device_t dev);
244const char *device_get_nameunit(device_t dev);
245void *device_get_softc(device_t dev);
246device_state_t device_get_state(device_t dev);
247int device_get_unit(device_t dev);
248int device_is_alive(device_t dev); /* did probe succeed? */
249int device_is_enabled(device_t dev);
250int device_is_quiet(device_t dev);
251int device_print_prettyname(device_t dev);
252int device_printf(device_t dev, const char *, ...) __printflike(2, 3);
253int device_probe_and_attach(device_t dev);
254void device_quiet(device_t dev);
255void device_set_desc(device_t dev, const char* desc);
256void device_set_desc_copy(device_t dev, const char* desc);
257int device_set_devclass(device_t dev, const char *classname);
258int device_set_driver(device_t dev, driver_t *driver);
259void device_set_flags(device_t dev, u_int32_t flags);
260int device_set_unit(device_t dev, int unit); /* XXX DONT USE XXX */
261int device_shutdown(device_t dev);
262void device_unbusy(device_t dev);
263void device_verbose(device_t dev);
264
265/*
266 * Access functions for devclass.
267 */
268int devclass_add_driver(devclass_t dc, driver_t *driver);
269int devclass_delete_driver(devclass_t dc, driver_t *driver);
270devclass_t devclass_create(const char *classname);
271devclass_t devclass_find(const char *classname);
272driver_t *devclass_find_driver(devclass_t dc, const char *classname);
273const char *devclass_get_name(devclass_t dc);
274device_t devclass_get_device(devclass_t dc, int unit);
275void *devclass_get_softc(devclass_t dc, int unit);
276int devclass_get_devices(devclass_t dc, device_t **listp, int *countp);
277int devclass_get_maxunit(devclass_t dc);
278
279/*
280 * Access functions for device resources.
281 */
282
283int resource_int_value(const char *name, int unit, const char *resname,
284 int *result);
285int resource_long_value(const char *name, int unit, const char *resname,
286 long *result);
287int resource_string_value(const char *name, int unit, const char *resname,
288 char **result);
289int resource_query_string(int i, const char *resname, const char *value);
290char *resource_query_name(int i);
291int resource_query_unit(int i);
292int resource_locate(int i, const char *resname);
293int resource_set_int(const char *name, int unit, const char *resname,
294 int value);
295int resource_set_long(const char *name, int unit, const char *resname,
296 long value);
297int resource_set_string(const char *name, int unit, const char *resname,
298 const char *value);
299int resource_count(void);
300
301/*
302 * Shorthand for constructing method tables.
303 */
68 int refs; /* # devclasses containing driver */
69};
70
71typedef enum device_state {
72 DS_NOTPRESENT, /* not probed or probe failed */
73 DS_ALIVE, /* probe succeeded */
74 DS_ATTACHED, /* attach method called */
75 DS_BUSY /* device is open */
76} device_state_t;
77
78/*
79 * Definitions for drivers which need to keep simple lists of resources
80 * for their child devices.
81 */
82struct resource;
83
84struct resource_list_entry {
85 SLIST_ENTRY(resource_list_entry) link;
86 int type; /* type argument to alloc_resource */
87 int rid; /* resource identifier */
88 struct resource *res; /* the real resource when allocated */
89 u_long start; /* start of resource range */
90 u_long end; /* end of resource range */
91 u_long count; /* count within range */
92};
93SLIST_HEAD(resource_list, resource_list_entry);
94
95/*
96 * Initialise a resource list.
97 */
98void resource_list_init(struct resource_list *rl);
99
100/*
101 * Reclaim memory used by a resource list.
102 */
103void resource_list_free(struct resource_list *rl);
104
105/*
106 * Add a resource entry or modify an existing entry if one exists with
107 * the same type and rid.
108 */
109void resource_list_add(struct resource_list *rl,
110 int type, int rid,
111 u_long start, u_long end, u_long count);
112
113/*
114 * Find a resource entry by type and rid.
115 */
116struct resource_list_entry*
117 resource_list_find(struct resource_list *rl,
118 int type, int rid);
119
120/*
121 * Delete a resource entry.
122 */
123void resource_list_delete(struct resource_list *rl,
124 int type, int rid);
125
126/*
127 * Implement BUS_ALLOC_RESOURCE by looking up a resource from the list
128 * and passing the allocation up to the parent of bus. This assumes
129 * that the first entry of device_get_ivars(child) is a struct
130 * resource_list. This also handles 'passthrough' allocations where a
131 * child is a remote descendant of bus by passing the allocation up to
132 * the parent of bus.
133 */
134struct resource *
135 resource_list_alloc(struct resource_list *rl,
136 device_t bus, device_t child,
137 int type, int *rid,
138 u_long start, u_long end,
139 u_long count, u_int flags);
140
141/*
142 * Implement BUS_RELEASE_RESOURCE.
143 */
144int resource_list_release(struct resource_list *rl,
145 device_t bus, device_t child,
146 int type, int rid, struct resource *res);
147
148/*
149 * The root bus, to which all top-level busses are attached.
150 */
151extern device_t root_bus;
152extern devclass_t root_devclass;
153void root_bus_configure(void);
154
155/*
156 * Useful functions for implementing busses.
157 */
158
159int bus_generic_activate_resource(device_t dev, device_t child, int type,
160 int rid, struct resource *r);
161struct resource *bus_generic_alloc_resource(device_t bus, device_t child,
162 int type, int *rid,
163 u_long start, u_long end,
164 u_long count, u_int flags);
165int bus_generic_attach(device_t dev);
166int bus_generic_deactivate_resource(device_t dev, device_t child, int type,
167 int rid, struct resource *r);
168int bus_generic_detach(device_t dev);
169void bus_generic_driver_added(device_t dev, driver_t *driver);
170int bus_print_child_header(device_t dev, device_t child);
171int bus_print_child_footer(device_t dev, device_t child);
172int bus_generic_print_child(device_t dev, device_t child);
173int bus_generic_probe(device_t dev);
174int bus_generic_read_ivar(device_t dev, device_t child, int which,
175 uintptr_t *result);
176int bus_generic_release_resource(device_t bus, device_t child,
177 int type, int rid, struct resource *r);
178int bus_generic_resume(device_t dev);
179int bus_generic_setup_intr(device_t dev, device_t child,
180 struct resource *irq, int flags,
181 driver_intr_t *intr, void *arg, void **cookiep);
182int bus_generic_shutdown(device_t dev);
183int bus_generic_suspend(device_t dev);
184int bus_generic_teardown_intr(device_t dev, device_t child,
185 struct resource *irq, void *cookie);
186int bus_generic_write_ivar(device_t dev, device_t child, int which,
187 uintptr_t value);
188
189/*
190 * Wrapper functions for the BUS_*_RESOURCE methods to make client code
191 * a little simpler.
192 */
193struct resource *bus_alloc_resource(device_t dev, int type, int *rid,
194 u_long start, u_long end, u_long count,
195 u_int flags);
196int bus_activate_resource(device_t dev, int type, int rid,
197 struct resource *r);
198int bus_deactivate_resource(device_t dev, int type, int rid,
199 struct resource *r);
200int bus_release_resource(device_t dev, int type, int rid,
201 struct resource *r);
202int bus_setup_intr(device_t dev, struct resource *r, int flags,
203 driver_intr_t handler, void *arg, void **cookiep);
204int bus_teardown_intr(device_t dev, struct resource *r, void *cookie);
205int bus_set_resource(device_t dev, int type, int rid,
206 u_long start, u_long count);
207int bus_get_resource(device_t dev, int type, int rid,
208 u_long *startp, u_long *countp);
209u_long bus_get_resource_start(device_t dev, int type, int rid);
210u_long bus_get_resource_count(device_t dev, int type, int rid);
211void bus_delete_resource(device_t dev, int type, int rid);
212
213/*
214 * Access functions for device.
215 */
216device_t device_add_child(device_t dev, const char *name, int unit);
217device_t device_add_child_ordered(device_t dev, int order,
218 const char *name, int unit);
219void device_busy(device_t dev);
220int device_delete_child(device_t dev, device_t child);
221int device_detach(device_t dev);
222void device_disable(device_t dev);
223void device_enable(device_t dev);
224device_t device_find_child(device_t dev, const char *classname,
225 int unit);
226const char *device_get_desc(device_t dev);
227devclass_t device_get_devclass(device_t dev);
228driver_t *device_get_driver(device_t dev);
229u_int32_t device_get_flags(device_t dev);
230device_t device_get_parent(device_t dev);
231int device_get_children(device_t dev, device_t **listp, int *countp);
232void *device_get_ivars(device_t dev);
233void device_set_ivars(device_t dev, void *ivars);
234const char *device_get_name(device_t dev);
235const char *device_get_nameunit(device_t dev);
236void *device_get_softc(device_t dev);
237device_state_t device_get_state(device_t dev);
238int device_get_unit(device_t dev);
239int device_is_alive(device_t dev); /* did probe succeed? */
240int device_is_enabled(device_t dev);
241int device_is_quiet(device_t dev);
242int device_print_prettyname(device_t dev);
243int device_printf(device_t dev, const char *, ...) __printflike(2, 3);
244int device_probe_and_attach(device_t dev);
245void device_quiet(device_t dev);
246void device_set_desc(device_t dev, const char* desc);
247void device_set_desc_copy(device_t dev, const char* desc);
248int device_set_devclass(device_t dev, const char *classname);
249int device_set_driver(device_t dev, driver_t *driver);
250void device_set_flags(device_t dev, u_int32_t flags);
251int device_set_unit(device_t dev, int unit); /* XXX DONT USE XXX */
252int device_shutdown(device_t dev);
253void device_unbusy(device_t dev);
254void device_verbose(device_t dev);
255
256/*
257 * Access functions for devclass.
258 */
259int devclass_add_driver(devclass_t dc, driver_t *driver);
260int devclass_delete_driver(devclass_t dc, driver_t *driver);
261devclass_t devclass_create(const char *classname);
262devclass_t devclass_find(const char *classname);
263driver_t *devclass_find_driver(devclass_t dc, const char *classname);
264const char *devclass_get_name(devclass_t dc);
265device_t devclass_get_device(devclass_t dc, int unit);
266void *devclass_get_softc(devclass_t dc, int unit);
267int devclass_get_devices(devclass_t dc, device_t **listp, int *countp);
268int devclass_get_maxunit(devclass_t dc);
269
270/*
271 * Access functions for device resources.
272 */
273
274int resource_int_value(const char *name, int unit, const char *resname,
275 int *result);
276int resource_long_value(const char *name, int unit, const char *resname,
277 long *result);
278int resource_string_value(const char *name, int unit, const char *resname,
279 char **result);
280int resource_query_string(int i, const char *resname, const char *value);
281char *resource_query_name(int i);
282int resource_query_unit(int i);
283int resource_locate(int i, const char *resname);
284int resource_set_int(const char *name, int unit, const char *resname,
285 int value);
286int resource_set_long(const char *name, int unit, const char *resname,
287 long value);
288int resource_set_string(const char *name, int unit, const char *resname,
289 const char *value);
290int resource_count(void);
291
292/*
293 * Shorthand for constructing method tables.
294 */
304#define DEVMETHOD(NAME, FUNC) { &NAME##_desc, (devop_t) FUNC }
295#define DEVMETHOD KOBJMETHOD
305
306/*
307 * Some common device interfaces.
308 */
309#include "device_if.h"
310#include "bus_if.h"
311
312struct module;
313
314int driver_module_handler(struct module *, int, void *);
315
316/*
317 * Module support for automatically adding drivers to busses.
318 */
319struct driver_module_data {
320 int (*dmd_chainevh)(struct module *, int, void *);
321 void *dmd_chainarg;
322 const char *dmd_busname;
323 driver_t **dmd_drivers;
324 int dmd_ndrivers;
325 devclass_t *dmd_devclass;
326};
327
328#define DRIVER_MODULE(name, busname, driver, devclass, evh, arg) \
329 \
330static driver_t *name##_##busname##_driver_list[] = { &driver }; \
331static struct driver_module_data name##_##busname##_driver_mod = { \
332 evh, arg, \
333 #busname, \
334 name##_##busname##_driver_list, \
335 (sizeof name##_##busname##_driver_list) / \
336 (sizeof name##_##busname##_driver_list[0]), \
337 &devclass \
338}; \
339 \
340static moduledata_t name##_##busname##_mod = { \
341 #busname "/" #name, \
342 driver_module_handler, \
343 &name##_##busname##_driver_mod \
344}; \
345DECLARE_MODULE(name##_##busname, name##_##busname##_mod, \
346 SI_SUB_DRIVERS, SI_ORDER_MIDDLE)
347
348#define MULTI_DRIVER_MODULE(name, busname, drivers, devclass, evh, arg) \
349 \
350static driver_t name##_##busname##_driver_list[] = drivers; \
351static struct driver_module_data name##_##busname##_driver_mod = { \
352 evh, arg, \
353 #busname, \
354 name##_##busname##_driver_list, \
355 (sizeof name##_##busname##_driver_list) / \
356 (sizeof name##_##busname##_driver_list[0]), \
357 &devclass \
358}; \
359 \
360static moduledata_t name##_##busname##_mod = { \
361 #busname "/" #name, \
362 driver_module_handler, \
363 &name##_##busname##_driver_mod \
364}; \
365DECLARE_MODULE(name##_##busname, name##_##busname##_mod, \
366 SI_SUB_DRIVERS, SI_ORDER_MIDDLE)
367
368#endif /* _KERNEL */
369
370#endif /* !_SYS_BUS_H_ */
296
297/*
298 * Some common device interfaces.
299 */
300#include "device_if.h"
301#include "bus_if.h"
302
303struct module;
304
305int driver_module_handler(struct module *, int, void *);
306
307/*
308 * Module support for automatically adding drivers to busses.
309 */
310struct driver_module_data {
311 int (*dmd_chainevh)(struct module *, int, void *);
312 void *dmd_chainarg;
313 const char *dmd_busname;
314 driver_t **dmd_drivers;
315 int dmd_ndrivers;
316 devclass_t *dmd_devclass;
317};
318
319#define DRIVER_MODULE(name, busname, driver, devclass, evh, arg) \
320 \
321static driver_t *name##_##busname##_driver_list[] = { &driver }; \
322static struct driver_module_data name##_##busname##_driver_mod = { \
323 evh, arg, \
324 #busname, \
325 name##_##busname##_driver_list, \
326 (sizeof name##_##busname##_driver_list) / \
327 (sizeof name##_##busname##_driver_list[0]), \
328 &devclass \
329}; \
330 \
331static moduledata_t name##_##busname##_mod = { \
332 #busname "/" #name, \
333 driver_module_handler, \
334 &name##_##busname##_driver_mod \
335}; \
336DECLARE_MODULE(name##_##busname, name##_##busname##_mod, \
337 SI_SUB_DRIVERS, SI_ORDER_MIDDLE)
338
339#define MULTI_DRIVER_MODULE(name, busname, drivers, devclass, evh, arg) \
340 \
341static driver_t name##_##busname##_driver_list[] = drivers; \
342static struct driver_module_data name##_##busname##_driver_mod = { \
343 evh, arg, \
344 #busname, \
345 name##_##busname##_driver_list, \
346 (sizeof name##_##busname##_driver_list) / \
347 (sizeof name##_##busname##_driver_list[0]), \
348 &devclass \
349}; \
350 \
351static moduledata_t name##_##busname##_mod = { \
352 #busname "/" #name, \
353 driver_module_handler, \
354 &name##_##busname##_driver_mod \
355}; \
356DECLARE_MODULE(name##_##busname, name##_##busname##_mod, \
357 SI_SUB_DRIVERS, SI_ORDER_MIDDLE)
358
359#endif /* _KERNEL */
360
361#endif /* !_SYS_BUS_H_ */