2 * Copyright 1998 Massachusetts Institute of Technology
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5 * its documentation for any purpose and without fee is hereby
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33 #define _SYS_RMAN_H_ 1
36 #include <sys/queue.h>
38 #include <machine/_bus.h>
39 #include <machine/resource.h>
42 #define RF_ALLOCATED 0x0001 /* resource has been reserved */
43 #define RF_ACTIVE 0x0002 /* resource allocation has been activated */
44 #define RF_SHAREABLE 0x0004 /* resource permits contemporaneous sharing */
45 #define RF_SPARE1 0x0008
46 #define RF_SPARE2 0x0010
47 #define RF_FIRSTSHARE 0x0020 /* first in sharing list */
48 #define RF_PREFETCHABLE 0x0040 /* resource is prefetchable */
49 #define RF_OPTIONAL 0x0080 /* for bus_alloc_resources() */
50 #define RF_UNMAPPED 0x0100 /* don't map resource when activating */
52 #define RF_ALIGNMENT_SHIFT 10 /* alignment size bit starts bit 10 */
53 #define RF_ALIGNMENT_MASK (0x003F << RF_ALIGNMENT_SHIFT)
54 /* resource address alignment size bit mask */
55 #define RF_ALIGNMENT_LOG2(x) ((x) << RF_ALIGNMENT_SHIFT)
56 #define RF_ALIGNMENT(x) (((x) & RF_ALIGNMENT_MASK) >> RF_ALIGNMENT_SHIFT)
58 enum rman_type { RMAN_UNINIT = 0, RMAN_GAUGE, RMAN_ARRAY };
61 * String length exported to userspace for resource names, etc.
65 #define RM_MAX_END (~(rman_res_t)0)
67 #define RMAN_IS_DEFAULT_RANGE(s,e) ((s) == 0 && (e) == RM_MAX_END)
70 * Userspace-exported structures.
73 uintptr_t r_handle; /* resource uniquifier */
74 uintptr_t r_parent; /* parent rman */
75 uintptr_t r_device; /* device owning this resource */
76 char r_devname[RM_TEXTLEN]; /* device name XXX obsolete */
78 rman_res_t r_start; /* offset in resource space */
79 rman_res_t r_size; /* size in resource space */
80 u_int r_flags; /* RF_* flags */
84 uintptr_t rm_handle; /* rman uniquifier */
85 char rm_descr[RM_TEXTLEN]; /* rman description */
87 rman_res_t rm_start; /* base of managed region */
88 rman_res_t rm_size; /* size of managed region */
89 enum rman_type rm_type; /* region type */
95 * The public (kernel) view of struct resource
97 * NB: Changing the offset/size/type of existing fields in struct resource
98 * NB: breaks the device driver ABI and is strongly FORBIDDEN.
99 * NB: Appending new fields is probably just misguided.
103 struct resource_i *__r_i;
104 bus_space_tag_t r_bustag; /* bus_space tag */
105 bus_space_handle_t r_bushandle; /* bus_space handle */
111 TAILQ_HEAD(resource_head, resource_i);
114 struct resource_head rm_list;
115 struct mtx *rm_mtx; /* mutex used to protect rm_list */
116 TAILQ_ENTRY(rman) rm_link; /* link in list of all rmans */
117 rman_res_t rm_start; /* index of globally first entry */
118 rman_res_t rm_end; /* index of globally last entry */
119 enum rman_type rm_type; /* what type of resource this is */
120 const char *rm_descr; /* text descripion of this resource */
122 TAILQ_HEAD(rman_head, rman);
124 int rman_activate_resource(struct resource *r);
125 int rman_adjust_resource(struct resource *r, rman_res_t start, rman_res_t end);
126 int rman_first_free_region(struct rman *rm, rman_res_t *start, rman_res_t *end);
127 bus_space_handle_t rman_get_bushandle(struct resource *);
128 bus_space_tag_t rman_get_bustag(struct resource *);
129 rman_res_t rman_get_end(struct resource *);
130 struct device *rman_get_device(struct resource *);
131 u_int rman_get_flags(struct resource *);
132 void rman_get_mapping(struct resource *, struct resource_map *);
133 int rman_get_rid(struct resource *);
134 rman_res_t rman_get_size(struct resource *);
135 rman_res_t rman_get_start(struct resource *);
136 void *rman_get_virtual(struct resource *);
137 int rman_deactivate_resource(struct resource *r);
138 int rman_fini(struct rman *rm);
139 int rman_init(struct rman *rm);
140 int rman_init_from_resource(struct rman *rm, struct resource *r);
141 int rman_last_free_region(struct rman *rm, rman_res_t *start, rman_res_t *end);
142 uint32_t rman_make_alignment_flags(uint32_t size);
143 int rman_manage_region(struct rman *rm, rman_res_t start, rman_res_t end);
144 int rman_is_region_manager(struct resource *r, struct rman *rm);
145 int rman_release_resource(struct resource *r);
146 struct resource *rman_reserve_resource(struct rman *rm, rman_res_t start,
147 rman_res_t end, rman_res_t count,
148 u_int flags, struct device *dev);
149 struct resource *rman_reserve_resource_bound(struct rman *rm, rman_res_t start,
150 rman_res_t end, rman_res_t count, rman_res_t bound,
151 u_int flags, struct device *dev);
152 void rman_set_bushandle(struct resource *_r, bus_space_handle_t _h);
153 void rman_set_bustag(struct resource *_r, bus_space_tag_t _t);
154 void rman_set_device(struct resource *_r, struct device *_dev);
155 void rman_set_end(struct resource *_r, rman_res_t _end);
156 void rman_set_mapping(struct resource *, struct resource_map *);
157 void rman_set_rid(struct resource *_r, int _rid);
158 void rman_set_start(struct resource *_r, rman_res_t _start);
159 void rman_set_virtual(struct resource *_r, void *_v);
161 extern struct rman_head rman_head;
165 #endif /* !_SYS_RMAN_H_ */