FreeBSD/Linux Kernel Cross Reference
sys/isa/isavar.h
1 /*-
2 * Copyright (c) 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 * $FreeBSD$
27 */
28
29 #ifndef _ISA_ISAVAR_H_
30 #define _ISA_ISAVAR_H_
31
32 struct isa_config;
33 struct isa_pnp_id;
34 typedef void isa_config_cb(void *arg, struct isa_config *config, int enable);
35
36 #include "isa_if.h"
37 #include <isa/pnpvar.h>
38
39 #ifdef _KERNEL
40
41 /*
42 * ISA devices are partially ordered to ensure that devices which are
43 * sensitive to other driver probe routines are probed first. Plug and
44 * Play devices are added after devices with speculative probes so that
45 * the legacy hardware can claim resources allowing the Plug and Play
46 * hardware to choose different resources.
47 */
48 #define ISA_ORDER_SENSITIVE 0 /* legacy sensitive hardware */
49 #define ISA_ORDER_SPECULATIVE 1 /* legacy non-sensitive hardware */
50 #define ISA_ORDER_PNP 2 /* plug-and-play hardware */
51
52 #define ISA_NPORT 50
53 #define ISA_NMEM 8
54 #define ISA_NIRQ 2
55 #define ISA_NDRQ 2
56
57 #define ISADMA_READ 0x00100000
58 #define ISADMA_WRITE 0
59 #define ISADMA_RAW 0x00080000
60 /*
61 * Plug and play cards can support a range of resource
62 * configurations. This structure is used by the isapnp parser to
63 * inform the isa bus about the resource possibilities of the
64 * device. Each different alternative should be supplied by calling
65 * ISA_ADD_CONFIG().
66 */
67 struct isa_range {
68 u_int32_t ir_start;
69 u_int32_t ir_end;
70 u_int32_t ir_size;
71 u_int32_t ir_align;
72 };
73
74 struct isa_config {
75 struct isa_range ic_mem[ISA_NMEM];
76 struct isa_range ic_port[ISA_NPORT];
77 u_int32_t ic_irqmask[ISA_NIRQ];
78 u_int32_t ic_drqmask[ISA_NDRQ];
79 int ic_nmem;
80 int ic_nport;
81 int ic_nirq;
82 int ic_ndrq;
83 };
84
85 /*
86 * Used to build lists of IDs and description strings for PnP drivers.
87 */
88 struct isa_pnp_id {
89 u_int32_t ip_id;
90 const char *ip_desc;
91 };
92
93 enum isa_device_ivars {
94 ISA_IVAR_PORT,
95 ISA_IVAR_PORT_0 = ISA_IVAR_PORT,
96 ISA_IVAR_PORT_1,
97 ISA_IVAR_PORTSIZE,
98 ISA_IVAR_PORTSIZE_0 = ISA_IVAR_PORTSIZE,
99 ISA_IVAR_PORTSIZE_1,
100 ISA_IVAR_MADDR,
101 ISA_IVAR_MADDR_0 = ISA_IVAR_MADDR,
102 ISA_IVAR_MADDR_1,
103 ISA_IVAR_MSIZE,
104 ISA_IVAR_MSIZE_0 = ISA_IVAR_MSIZE,
105 ISA_IVAR_MSIZE_1,
106 ISA_IVAR_IRQ,
107 ISA_IVAR_IRQ_0 = ISA_IVAR_IRQ,
108 ISA_IVAR_IRQ_1,
109 ISA_IVAR_DRQ,
110 ISA_IVAR_DRQ_0 = ISA_IVAR_DRQ,
111 ISA_IVAR_DRQ_1,
112 ISA_IVAR_VENDORID,
113 ISA_IVAR_SERIAL,
114 ISA_IVAR_LOGICALID,
115 ISA_IVAR_COMPATID
116 };
117
118 /*
119 * Simplified accessors for isa devices
120 */
121 #define ISA_ACCESSOR(A, B, T) \
122 \
123 static __inline T isa_get_ ## A(device_t dev) \
124 { \
125 uintptr_t v; \
126 BUS_READ_IVAR(device_get_parent(dev), dev, ISA_IVAR_ ## B, &v); \
127 return (T) v; \
128 } \
129 \
130 static __inline void isa_set_ ## A(device_t dev, T t) \
131 { \
132 u_long v = (u_long) t; \
133 BUS_WRITE_IVAR(device_get_parent(dev), dev, ISA_IVAR_ ## B, v); \
134 }
135
136 ISA_ACCESSOR(port, PORT, int)
137 ISA_ACCESSOR(portsize, PORTSIZE, int)
138 ISA_ACCESSOR(irq, IRQ, int)
139 ISA_ACCESSOR(drq, DRQ, int)
140 ISA_ACCESSOR(maddr, MADDR, int)
141 ISA_ACCESSOR(msize, MSIZE, int)
142 ISA_ACCESSOR(vendorid, VENDORID, int)
143 ISA_ACCESSOR(serial, SERIAL, int)
144 ISA_ACCESSOR(logicalid, LOGICALID, int)
145 ISA_ACCESSOR(compatid, COMPATID, int)
146
147 extern intrmask_t isa_irq_pending(void);
148 extern intrmask_t isa_irq_mask(void);
149 #ifdef __i386__
150 extern void isa_wrap_old_drivers(void);
151 #endif
152 extern void isa_probe_children(device_t dev);
153
154 extern void isa_dmacascade __P((int chan));
155 extern void isa_dmadone __P((int flags, caddr_t addr, int nbytes, int chan));
156 extern void isa_dmainit __P((int chan, u_int bouncebufsize));
157 extern void isa_dmastart __P((int flags, caddr_t addr, u_int nbytes, int chan));
158 extern int isa_dma_acquire __P((int chan));
159 extern void isa_dma_release __P((int chan));
160 extern int isa_dmastatus __P((int chan));
161 extern int isa_dmastop __P((int chan));
162
163 #ifdef PC98
164 #include <machine/bus.h>
165
166 /*
167 * Allocate discontinuous resources for ISA bus.
168 */
169 struct resource *
170 isa_alloc_resourcev(device_t child, int type, int *rid,
171 bus_addr_t *res, bus_size_t count, u_int flags);
172 int
173 isa_load_resourcev(struct resource *re, bus_addr_t *res, bus_size_t count);
174 #endif
175
176 #endif /* _KERNEL */
177
178 #endif /* !_ISA_ISAVAR_H_ */
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