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: releng/5.1/sys/isa/isavar.h 105139 2002-10-15 00:02:51Z jhb $
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 /*
53 * Limits on resources that we can manage
54 */
55 #define ISA_NPORT 50
56 #define ISA_NMEM 50
57 #define ISA_NIRQ 50
58 #define ISA_NDRQ 50
59
60 /*
61 * Limits on resources the hardware can actually handle
62 */
63 #define ISA_PNP_NPORT 8
64 #define ISA_PNP_NMEM 4
65 #define ISA_PNP_NIRQ 2
66 #define ISA_PNP_NDRQ 2
67
68 #define ISADMA_READ 0x00100000
69 #define ISADMA_WRITE 0
70 #define ISADMA_RAW 0x00080000
71 /*
72 * Plug and play cards can support a range of resource
73 * configurations. This structure is used by the isapnp parser to
74 * inform the isa bus about the resource possibilities of the
75 * device. Each different alternative should be supplied by calling
76 * ISA_ADD_CONFIG().
77 */
78 struct isa_range {
79 u_int32_t ir_start;
80 u_int32_t ir_end;
81 u_int32_t ir_size;
82 u_int32_t ir_align;
83 };
84
85 struct isa_config {
86 struct isa_range ic_mem[ISA_NMEM];
87 struct isa_range ic_port[ISA_NPORT];
88 u_int32_t ic_irqmask[ISA_NIRQ];
89 u_int32_t ic_drqmask[ISA_NDRQ];
90 int ic_nmem;
91 int ic_nport;
92 int ic_nirq;
93 int ic_ndrq;
94 };
95
96 /*
97 * Used to build lists of IDs and description strings for PnP drivers.
98 */
99 struct isa_pnp_id {
100 u_int32_t ip_id;
101 const char *ip_desc;
102 };
103
104 enum isa_device_ivars {
105 ISA_IVAR_PORT,
106 ISA_IVAR_PORT_0 = ISA_IVAR_PORT,
107 ISA_IVAR_PORT_1,
108 ISA_IVAR_PORTSIZE,
109 ISA_IVAR_PORTSIZE_0 = ISA_IVAR_PORTSIZE,
110 ISA_IVAR_PORTSIZE_1,
111 ISA_IVAR_MADDR,
112 ISA_IVAR_MADDR_0 = ISA_IVAR_MADDR,
113 ISA_IVAR_MADDR_1,
114 ISA_IVAR_MEMSIZE,
115 ISA_IVAR_MEMSIZE_0 = ISA_IVAR_MEMSIZE,
116 ISA_IVAR_MEMSIZE_1,
117 ISA_IVAR_IRQ,
118 ISA_IVAR_IRQ_0 = ISA_IVAR_IRQ,
119 ISA_IVAR_IRQ_1,
120 ISA_IVAR_DRQ,
121 ISA_IVAR_DRQ_0 = ISA_IVAR_DRQ,
122 ISA_IVAR_DRQ_1,
123 ISA_IVAR_VENDORID,
124 ISA_IVAR_SERIAL,
125 ISA_IVAR_LOGICALID,
126 ISA_IVAR_COMPATID,
127 ISA_IVAR_CONFIGATTR
128 };
129
130 /*
131 * ISA_IVAR_CONFIGATTR bits
132 */
133 #define ISACFGATTR_CANDISABLE (1 << 0) /* can be disabled */
134 #define ISACFGATTR_DYNAMIC (1 << 1) /* dynamic configuration */
135 #define ISACFGATTR_MULTI (1 << 2) /* multiple configurations */
136
137 /*
138 * Simplified accessors for isa devices
139 */
140 #define ISA_ACCESSOR(var, ivar, type) \
141 __BUS_ACCESSOR(isa, var, ISA, ivar, type)
142
143 ISA_ACCESSOR(port, PORT, int)
144 ISA_ACCESSOR(portsize, PORTSIZE, int)
145 ISA_ACCESSOR(irq, IRQ, int)
146 ISA_ACCESSOR(drq, DRQ, int)
147 ISA_ACCESSOR(maddr, MADDR, int)
148 ISA_ACCESSOR(msize, MEMSIZE, int)
149 ISA_ACCESSOR(vendorid, VENDORID, int)
150 ISA_ACCESSOR(serial, SERIAL, int)
151 ISA_ACCESSOR(logicalid, LOGICALID, int)
152 ISA_ACCESSOR(compatid, COMPATID, int)
153 ISA_ACCESSOR(configattr, CONFIGATTR, int)
154
155 extern intrmask_t isa_irq_pending(void);
156 extern void isa_probe_children(device_t dev);
157
158 extern void isa_dmacascade(int chan);
159 extern void isa_dmadone(int flags, caddr_t addr, int nbytes, int chan);
160 extern void isa_dmainit(int chan, u_int bouncebufsize);
161 extern void isa_dmastart(int flags, caddr_t addr, u_int nbytes, int chan);
162 extern int isa_dma_acquire(int chan);
163 extern void isa_dma_release(int chan);
164 extern int isa_dmastatus(int chan);
165 extern int isa_dmastop(int chan);
166
167 #ifdef PC98
168 #include <machine/bus.h>
169
170 /*
171 * Allocate discontinuous resources for ISA bus.
172 */
173 struct resource *
174 isa_alloc_resourcev(device_t child, int type, int *rid,
175 bus_addr_t *res, bus_size_t count, u_int flags);
176 int
177 isa_load_resourcev(struct resource *re, bus_addr_t *res, bus_size_t count);
178 #endif
179
180 #endif /* _KERNEL */
181
182 #endif /* !_ISA_ISAVAR_H_ */
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