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: src/sys/isa/isavar.h,v 1.32 2008/11/18 21:01:54 jhb Exp $
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. This is to ensure that hardwired
43 * devices the BIOS tells us are there appear first, then speculative
44 * devices that are sensitive to the probe order, then devices that
45 * are hinted to be there, then the most flexible devices which support
46 * the ISA bus PNP standard.
47 */
48 #define ISA_ORDER_PNPBIOS 10 /* plug-and-play BIOS inflexible hardware */
49 #define ISA_ORDER_SENSITIVE 20 /* legacy sensitive hardware */
50 #define ISA_ORDER_SPECULATIVE 30 /* legacy non-sensitive hardware */
51 #define ISA_ORDER_PNP 40 /* plug-and-play flexible hardware */
52
53 /*
54 * Limits on resources that we can manage
55 */
56 #define ISA_NPORT 50
57 #define ISA_NMEM 50
58 #define ISA_NIRQ 50
59 #define ISA_NDRQ 50
60
61 /*
62 * Limits on resources the hardware can actually handle
63 */
64 #define ISA_PNP_NPORT 8
65 #define ISA_PNP_NMEM 4
66 #define ISA_PNP_NIRQ 2
67 #define ISA_PNP_NDRQ 2
68
69 #define ISADMA_READ 0x00100000
70 #define ISADMA_WRITE 0
71 #define ISADMA_RAW 0x00080000
72 /*
73 * Plug and play cards can support a range of resource
74 * configurations. This structure is used by the isapnp parser to
75 * inform the isa bus about the resource possibilities of the
76 * device. Each different alternative should be supplied by calling
77 * ISA_ADD_CONFIG().
78 */
79 struct isa_range {
80 u_int32_t ir_start;
81 u_int32_t ir_end;
82 u_int32_t ir_size;
83 u_int32_t ir_align;
84 };
85
86 struct isa_config {
87 struct isa_range ic_mem[ISA_NMEM];
88 struct isa_range ic_port[ISA_NPORT];
89 u_int32_t ic_irqmask[ISA_NIRQ];
90 u_int32_t ic_drqmask[ISA_NDRQ];
91 int ic_nmem;
92 int ic_nport;
93 int ic_nirq;
94 int ic_ndrq;
95 };
96
97 /*
98 * Used to build lists of IDs and description strings for PnP drivers.
99 */
100 struct isa_pnp_id {
101 u_int32_t ip_id;
102 const char *ip_desc;
103 };
104
105 enum isa_device_ivars {
106 ISA_IVAR_PORT,
107 ISA_IVAR_PORT_0 = ISA_IVAR_PORT,
108 ISA_IVAR_PORT_1,
109 ISA_IVAR_PORTSIZE,
110 ISA_IVAR_PORTSIZE_0 = ISA_IVAR_PORTSIZE,
111 ISA_IVAR_PORTSIZE_1,
112 ISA_IVAR_MADDR,
113 ISA_IVAR_MADDR_0 = ISA_IVAR_MADDR,
114 ISA_IVAR_MADDR_1,
115 ISA_IVAR_MEMSIZE,
116 ISA_IVAR_MEMSIZE_0 = ISA_IVAR_MEMSIZE,
117 ISA_IVAR_MEMSIZE_1,
118 ISA_IVAR_IRQ,
119 ISA_IVAR_IRQ_0 = ISA_IVAR_IRQ,
120 ISA_IVAR_IRQ_1,
121 ISA_IVAR_DRQ,
122 ISA_IVAR_DRQ_0 = ISA_IVAR_DRQ,
123 ISA_IVAR_DRQ_1,
124 ISA_IVAR_VENDORID,
125 ISA_IVAR_SERIAL,
126 ISA_IVAR_LOGICALID,
127 ISA_IVAR_COMPATID,
128 ISA_IVAR_CONFIGATTR,
129 ISA_IVAR_PNP_CSN,
130 ISA_IVAR_PNP_LDN,
131 ISA_IVAR_PNPBIOS_HANDLE
132 };
133
134 /*
135 * ISA_IVAR_CONFIGATTR bits
136 */
137 #define ISACFGATTR_CANDISABLE (1 << 0) /* can be disabled */
138 #define ISACFGATTR_DYNAMIC (1 << 1) /* dynamic configuration */
139 #define ISACFGATTR_HINTS (1 << 3) /* source of config is hints */
140
141 /*
142 * Simplified accessors for isa devices
143 */
144 #define ISA_ACCESSOR(var, ivar, type) \
145 __BUS_ACCESSOR(isa, var, ISA, ivar, type)
146
147 ISA_ACCESSOR(port, PORT, int)
148 ISA_ACCESSOR(portsize, PORTSIZE, int)
149 ISA_ACCESSOR(irq, IRQ, int)
150 ISA_ACCESSOR(drq, DRQ, int)
151 ISA_ACCESSOR(maddr, MADDR, int)
152 ISA_ACCESSOR(msize, MEMSIZE, int)
153 ISA_ACCESSOR(vendorid, VENDORID, int)
154 ISA_ACCESSOR(serial, SERIAL, int)
155 ISA_ACCESSOR(logicalid, LOGICALID, int)
156 ISA_ACCESSOR(compatid, COMPATID, int)
157 ISA_ACCESSOR(configattr, CONFIGATTR, int)
158 ISA_ACCESSOR(pnp_csn, PNP_CSN, int)
159 ISA_ACCESSOR(pnp_ldn, PNP_LDN, int)
160 ISA_ACCESSOR(pnpbios_handle, PNPBIOS_HANDLE, int)
161
162 /* Device class for ISA bridges. */
163 extern devclass_t isab_devclass;
164
165 extern intrmask_t isa_irq_pending(void);
166 extern void isa_probe_children(device_t dev);
167
168 void isa_dmacascade(int chan);
169 void isa_dmadone(int flags, caddr_t addr, int nbytes, int chan);
170 int isa_dma_init(int chan, u_int bouncebufsize, int flag);
171 void isa_dmastart(int flags, caddr_t addr, u_int nbytes, int chan);
172 int isa_dma_acquire(int chan);
173 void isa_dma_release(int chan);
174 int isa_dmastatus(int chan);
175 int isa_dmastop(int chan);
176 int isa_dmatc(int chan);
177
178 #define isa_dmainit(chan, size) do { \
179 if (isa_dma_init(chan, size, M_NOWAIT)) \
180 printf("WARNING: isa_dma_init(%d, %ju) failed\n", \
181 (int)(chan), (uintmax_t)(size)); \
182 } while (0)
183
184 void isa_hinted_child(device_t parent, const char *name, int unit);
185 void isa_hint_device_unit(device_t bus, device_t child, const char *name,
186 int *unitp);
187 int isab_attach(device_t dev);
188
189 #ifdef PC98
190 #include <machine/bus.h>
191
192 /*
193 * Allocate discontinuous resources for ISA bus.
194 */
195 struct resource *
196 isa_alloc_resourcev(device_t child, int type, int *rid,
197 bus_addr_t *res, bus_size_t count, u_int flags);
198 int
199 isa_load_resourcev(struct resource *re, bus_addr_t *res, bus_size_t count);
200 #endif
201
202 #endif /* _KERNEL */
203
204 #endif /* !_ISA_ISAVAR_H_ */
205
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