summaryrefslogtreecommitdiff
path: root/sys/dev/isa/isavar.h
blob: 1fe9c1293b667906aae6d1eaf5c1c2546ec73d2c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
/*	$OpenBSD: isavar.h,v 1.59 2024/03/31 09:49:33 miod Exp $	*/
/*	$NetBSD: isavar.h,v 1.26 1997/06/06 23:43:57 thorpej Exp $	*/

/*-
 * Copyright (c) 1997 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
 * NASA Ames Research Center.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

/*
 * Copyright (c) 1996 Christos Zoulas.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by Christos Zoulas.
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/*
 * Copyright (c) 1995 Chris G. Demetriou
 * Copyright (c) 1992 Berkeley Software Design, Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by Berkeley Software
 *	Design, Inc.
 * 4. The name of Berkeley Software Design must not be used to endorse
 *    or promote products derived from this software without specific
 *    prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN, INC. ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL BERKELEY SOFTWARE DESIGN, INC. BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	BSDI Id: isavar.h,v 1.5 1992/12/01 18:06:00 karels Exp 
 */

#ifndef _DEV_ISA_ISAVAR_H_
#define	_DEV_ISA_ISAVAR_H_

/*
 * Definitions for ISA and ISA PnP autoconfiguration.
 */

#include <sys/queue.h>
#include <machine/bus.h>

#ifndef NISADMA
#include "isadma.h"
#endif

/* 
 * Structures and definitions needed by the machine-dependent header.
 */
struct isabus_attach_args;

#if defined(__alpha__)
#include <alpha/isa/isa_machdep.h>
#elif defined(__i386__)
#include <i386/isa/isa_machdep.h>
#else
#include <machine/isa_machdep.h>
#endif

#include "isapnp.h"

#if NISAPNP > 0
/*
 * Structures and definitions needed by the machine-dependent header.
 */
struct isapnp_softc;

#if defined(__alpha__)
#include <alpha/isa/isapnp_machdep.h>
#elif defined(__i386__)
#include <i386/isa/isapnp_machdep.h>
#else
#error COMPILING ISAPNP FOR UNSUPPORTED MACHINE.
#endif
#endif	/* NISAPNP */

# define ISAPNP_WRITE_ADDR(sc, v) \
    bus_space_write_1(sc->sc_iot, sc->sc_addr_ioh, 0, v)
# define ISAPNP_WRITE_DATA(sc, v) \
    bus_space_write_1(sc->sc_iot, sc->sc_wrdata_ioh, 0, v)
# define ISAPNP_READ_DATA(sc) \
    bus_space_read_1(sc->sc_iot, sc->sc_read_ioh, 0)

# define ISAPNP_CLONE_SETUP(dest, src) \
	do { \
		bzero((dest), sizeof(*(dest))); \
		(dest)->ia_ic = (src)->ia_ic; \
	} while (0)

#ifndef _DEV_ISA_ISAPNPREG_H_
/*
 * `reg' defines needed only for these structures.
 */
#define ISAPNP_MAX_CARDS 	8
#define ISAPNP_MAX_IDENT	32
#define ISAPNP_MAX_DEVCLASS	16
#define ISAPNP_SERIAL_SIZE	9

#define ISAPNP_NUM_MEM		4
#define ISAPNP_NUM_IO		8
#define ISAPNP_NUM_IRQ		16
#define ISAPNP_NUM_DRQ		8
#define ISAPNP_NUM_MEM32	4
#endif	/* _DEV_ISA_ISAPNPREG_H_ */

/*
 * ISA PnP-specific structures.
 */
struct isapnp_softc {
	struct device		sc_dev;
	TAILQ_HEAD(, isadev)
		sc_subdevs;		/* list of all children */

	bus_space_tag_t sc_iot;		/* isa io space tag */
	bus_space_tag_t sc_memt;	/* isa mem space tag */
#if NISADMA > 0
	bus_dma_tag_t sc_dmat;		/* isa DMA tag */
#endif /* NISADMA > 0 */

	int			sc_read_port;
	bus_space_handle_t	sc_addr_ioh;
	bus_space_handle_t	sc_wrdata_ioh;
	bus_space_handle_t	sc_read_ioh;
	bus_space_handle_t	sc_memh;
	u_int8_t		sc_ncards;
    	u_int8_t		sc_id[ISAPNP_MAX_CARDS][ISAPNP_SERIAL_SIZE];
};

struct isapnp_region {
	bus_space_handle_t h;
	u_int32_t base;

	u_int32_t minbase;
	u_int32_t maxbase;
	u_int32_t length;
	u_int32_t align;
	u_int8_t  flags;
};

struct isapnp_pin {
	int16_t	  num;
	u_int8_t  flags:4;
	u_int8_t  type:4;
	u_int16_t bits;
};

struct isapnp_knowndev {
	const char pnpid[8];
	const char driver[5];
};

/*
 * ISA bus attach arguments
 */
struct isabus_attach_args {
	char	*iba_busname;		/* XXX should be common */
	bus_space_tag_t iba_iot;	/* isa i/o space tag */
	bus_space_tag_t iba_memt;	/* isa mem space tag */
#if NISADMA > 0
	bus_dma_tag_t iba_dmat;		/* isa DMA tag */
#endif
	isa_chipset_tag_t iba_ic;
};

/*
 * ISA/ISA PnP shared driver attach arguments
 */
struct isa_attach_args {
	struct device  *ia_isa;		/* isa device */
	bus_space_tag_t ia_iot;		/* isa i/o space tag */
	bus_space_tag_t ia_memt;	/* isa mem space tag */
#if NISADMA > 0
	bus_dma_tag_t ia_dmat;		/* DMA tag */
#endif
	bus_space_handle_t ia_delaybah;	/* i/o handle for `delay port' */

	isa_chipset_tag_t ia_ic;

	/*
	 * ISA PnP configuration support.  `ipa_' prefixes are used to denote
	 * PnP specific members of this structure.
	 */
	struct isa_attach_args	*ipa_sibling;
	struct isa_attach_args	*ipa_child;

	char	ipa_devident[ISAPNP_MAX_IDENT];
	char	ipa_devlogic[ISAPNP_MAX_DEVCLASS];
	char	ipa_devcompat[ISAPNP_MAX_DEVCLASS];
	char	ipa_devclass[ISAPNP_MAX_DEVCLASS];

	u_char	ipa_pref;
	u_char	ipa_devnum;

	u_char	ipa_nio;
	u_char	ipa_nirq;
	u_char	ipa_ndrq;
	u_char	ipa_nmem;
	u_char	ipa_nmem32;

	struct isapnp_region	ipa_io[ISAPNP_NUM_IO];
	struct isapnp_region	ipa_mem[ISAPNP_NUM_MEM];
	struct isapnp_region	ipa_mem32[ISAPNP_NUM_MEM32];
	struct isapnp_pin	ipa_irq[ISAPNP_NUM_IRQ];
	struct isapnp_pin	ipa_drq[ISAPNP_NUM_DRQ];

	/*
	 * Compatibility defines for ISA drivers.
	 */
#define ia_iobase	ipa_io[0].base
#define ia_iosize	ipa_io[0].length
#define ia_ioh		ipa_io[0].h
#define ia_irq		ipa_irq[0].num
#define	ia_drq		ipa_drq[0].num
#define	ia_drq2		ipa_drq[1].num
#define ia_maddr	ipa_mem[0].base
#define ia_msize	ipa_mem[0].length
#define ia_memh		ipa_mem[0].h

	void	*ia_aux;		/* driver specific */
};

#define	IOBASEUNK	-1		/* i/o address is unknown */
#define	IRQUNK		-1		/* interrupt request line is unknown */
#define	DRQUNK		-1		/* DMA request line is unknown */
#define	MADDRUNK	-1		/* shared memory address is unknown */

/*
 * Per-device ISA variables
 */
struct isadev {
	struct  device *id_dev;		/* back pointer to generic */
	TAILQ_ENTRY(isadev)
		id_bchain;		/* bus chain */
};

/*
 * ISA master bus
 */
struct isa_softc {
	struct	device sc_dev;		/* base device */
	TAILQ_HEAD(, isadev)
		sc_subdevs;		/* list of all children */

	bus_space_tag_t sc_iot;		/* isa io space tag */
	bus_space_tag_t sc_memt;	/* isa mem space tag */
#if NISADMA > 0
	bus_dma_tag_t sc_dmat;		/* isa DMA tag */
#endif /* NISADMA > 0 */

	isa_chipset_tag_t sc_ic;

#if NISADMA > 0
	/*
	 * Bitmap representing the DRQ channels available
	 * for ISA.
	 */
	int	sc_drqmap;
#define sc_drq	sc_drqmap		/* XXX compatibility mode */

	bus_space_handle_t sc_dma1h;	/* i/o handle for DMA controller #1 */
	bus_space_handle_t sc_dma2h;	/* i/o handle for DMA controller #2 */
	bus_space_handle_t sc_dmapgh;	/* i/o handle for DMA page registers */

	/*
	 * DMA maps used for the 8 DMA channels.
	 */
	bus_dmamap_t	sc_dmamaps[8];
	bus_size_t 	sc_dmalength[8];

	int	sc_dmareads;		/* state for isa_dmadone() */
	int	sc_dmafinished;		/* DMA completion state */
#endif /* NISADMA > 0 */

	/*
	 * This i/o handle is used to map port 0x84, which is
	 * read to provide a 1.25us delay.  This access handle
	 * is mapped in isaattach(), and exported to drivers
	 * via isa_attach_args.
	 */
	bus_space_handle_t   sc_delaybah;
};

#define	ISA_DRQ_ISFREE(isadev, drq) \
	((((struct isa_softc *)(isadev))->sc_drqmap & (1 << (drq))) == 0)

#define	ISA_DRQ_ALLOC(isadev, drq) \
	((struct isa_softc *)(isadev))->sc_drqmap |= (1 << (drq))

#define	ISA_DRQ_FREE(isadev, drq) \
	((struct isa_softc *)(isadev))->sc_drqmap &= ~(1 << (drq))

#define		cf_iobase		cf_loc[0]
#define		cf_iosize		cf_loc[1]
#define		cf_maddr		cf_loc[2]
#define		cf_msize		cf_loc[3]
#define		cf_irq			cf_loc[4]
#define		cf_drq			cf_loc[5]
#define		cf_drq2			cf_loc[6]

/*
 * ISA interrupt handler manipulation.
 * 
 * To establish an ISA interrupt handler, a driver calls isa_intr_establish()
 * with the interrupt number, type, level, function, and function argument of
 * the interrupt it wants to handle.  Isa_intr_establish() returns an opaque
 * handle to an event descriptor if it succeeds, and invokes panic() if it
 * fails.  (XXX It should return NULL, then drivers should handle that, but
 * what should they do?)  Interrupt handlers should return 0 for "interrupt
 * not for me", 1  for "I took care of it", or -1 for "I guess it was mine,
 * but I wasn't expecting it."
 *
 * To remove an interrupt handler, the driver calls isa_intr_disestablish() 
 * with the handle returned by isa_intr_establish() for that handler.
 */

/* ISA interrupt sharing types */
char	*isa_intr_typename(int type);

void	isascan(struct device *parent, void *match);
int	isaprint(void *, const char *);

/*
 * Some ISA devices (e.g. on a VLB) can perform 32-bit DMA.  This
 * flag is passed to bus_dmamap_create() to indicate that fact.
 */
#define	ISABUS_DMA_32BIT	BUS_DMA_BUS1

/*
 * ISA PnP prototypes and support macros.
 */
static __inline void isapnp_write_reg(struct isapnp_softc *, int, u_char);
static __inline u_char isapnp_read_reg(struct isapnp_softc *, int);

static __inline void
isapnp_write_reg(struct isapnp_softc *sc, int r, u_char v)
{
	ISAPNP_WRITE_ADDR(sc, r);
	ISAPNP_WRITE_DATA(sc, v);
}

static __inline u_char
isapnp_read_reg(struct isapnp_softc *sc, int r)
{
	ISAPNP_WRITE_ADDR(sc, r);
	return ISAPNP_READ_DATA(sc);
}

struct isa_attach_args *
    isapnp_get_resource(struct isapnp_softc *, int, struct isa_attach_args *);
char *isapnp_id_to_vendor(char *, const u_char *);

int isapnp_config(bus_space_tag_t, bus_space_tag_t,
    struct isa_attach_args *);
void isapnp_unconfig(bus_space_tag_t, bus_space_tag_t,
    struct isa_attach_args *);

void isapnp_isa_attach_hook(struct isa_softc *);
#ifdef DEBUG_ISAPNP
void isapnp_print_mem(const char *, const struct isapnp_region *);
void isapnp_print_io(const char *, const struct isapnp_region *);
void isapnp_print_irq(const char *, const struct isapnp_pin *);
void isapnp_print_drq(const char *, const struct isapnp_pin *);
void isapnp_print_dep_start(const char *, const u_char);
void isapnp_print_attach(const struct isa_attach_args *);
void isapnp_get_config(struct isapnp_softc *,
	struct isa_attach_args *);
void isapnp_print_config(const struct isa_attach_args *);
#endif	/* DEBUG_ISAPNP */
#endif /* _DEV_ISA_ISAVAR_H_ */