Annotation of sys/dev/isa/isavar.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: isavar.h,v 1.52 2007/01/06 20:17:43 miod Exp $ */
2: /* $NetBSD: isavar.h,v 1.26 1997/06/06 23:43:57 thorpej Exp $ */
3:
4: /*-
5: * Copyright (c) 1997 The NetBSD Foundation, Inc.
6: * All rights reserved.
7: *
8: * This code is derived from software contributed to The NetBSD Foundation
9: * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
10: * NASA Ames Research Center.
11: *
12: * Redistribution and use in source and binary forms, with or without
13: * modification, are permitted provided that the following conditions
14: * are met:
15: * 1. Redistributions of source code must retain the above copyright
16: * notice, this list of conditions and the following disclaimer.
17: * 2. Redistributions in binary form must reproduce the above copyright
18: * notice, this list of conditions and the following disclaimer in the
19: * documentation and/or other materials provided with the distribution.
20: * 3. All advertising materials mentioning features or use of this software
21: * must display the following acknowledgement:
22: * This product includes software developed by the NetBSD
23: * Foundation, Inc. and its contributors.
24: * 4. Neither the name of The NetBSD Foundation nor the names of its
25: * contributors may be used to endorse or promote products derived
26: * from this software without specific prior written permission.
27: *
28: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
29: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
30: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
31: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
32: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
33: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
34: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
35: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
36: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
37: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
38: * POSSIBILITY OF SUCH DAMAGE.
39: */
40:
41: /*
42: * Copyright (c) 1996 Christos Zoulas. All rights reserved.
43: *
44: * Redistribution and use in source and binary forms, with or without
45: * modification, are permitted provided that the following conditions
46: * are met:
47: * 1. Redistributions of source code must retain the above copyright
48: * notice, this list of conditions and the following disclaimer.
49: * 2. Redistributions in binary form must reproduce the above copyright
50: * notice, this list of conditions and the following disclaimer in the
51: * documentation and/or other materials provided with the distribution.
52: * 3. All advertising materials mentioning features or use of this software
53: * must display the following acknowledgement:
54: * This product includes software developed by Christos Zoulas.
55: * 4. The name of the author may not be used to endorse or promote products
56: * derived from this software without specific prior written permission.
57: *
58: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
59: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
60: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
61: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
62: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
63: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
64: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
65: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
66: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
67: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
68: */
69:
70: /*
71: * Copyright (c) 1995 Chris G. Demetriou
72: * Copyright (c) 1992 Berkeley Software Design, Inc.
73: * All rights reserved.
74: *
75: * Redistribution and use in source and binary forms, with or without
76: * modification, are permitted provided that the following conditions
77: * are met:
78: * 1. Redistributions of source code must retain the above copyright
79: * notice, this list of conditions and the following disclaimer.
80: * 2. Redistributions in binary form must reproduce the above copyright
81: * notice, this list of conditions and the following disclaimer in the
82: * documentation and/or other materials provided with the distribution.
83: * 3. All advertising materials mentioning features or use of this software
84: * must display the following acknowledgement:
85: * This product includes software developed by Berkeley Software
86: * Design, Inc.
87: * 4. The name of Berkeley Software Design must not be used to endorse
88: * or promote products derived from this software without specific
89: * prior written permission.
90: *
91: * THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN, INC. ``AS IS'' AND
92: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
93: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
94: * ARE DISCLAIMED. IN NO EVENT SHALL BERKELEY SOFTWARE DESIGN, INC. BE LIABLE
95: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
96: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
97: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
98: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
99: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
100: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
101: * SUCH DAMAGE.
102: *
103: * BSDI Id: isavar.h,v 1.5 1992/12/01 18:06:00 karels Exp
104: */
105:
106: #ifndef _DEV_ISA_ISAVAR_H_
107: #define _DEV_ISA_ISAVAR_H_
108:
109: /*
110: * Definitions for ISA and ISA PnP autoconfiguration.
111: */
112:
113: #include <sys/queue.h>
114: #include <machine/bus.h>
115:
116: #ifndef NISADMA
117: #include "isadma.h"
118: #endif
119:
120: /*
121: * Structures and definitions needed by the machine-dependent header.
122: */
123: struct isabus_attach_args;
124:
125: #if defined(__alpha__)
126: #include <alpha/isa/isa_machdep.h>
127: #elif defined(__cats__)
128: #include <cats/isa/isa_machdep.h>
129: #elif defined(hp300)
130: #include <hp300/dev/isa_machdep.h>
131: #elif defined(__i386__)
132: #include <i386/isa/isa_machdep.h>
133: #elif defined(__mvmeppc__)
134: #include <mvmeppc/isa/isa_machdep.h>
135: #elif defined(__powerpc__)
136: #include <powerpc/isa/isa_machdep.h>
137: #else
138: #include <machine/isa_machdep.h>
139: #endif
140:
141: #include "isapnp.h"
142:
143: #if NISAPNP > 0
144: /*
145: * Structures and definitions needed by the machine-dependent header.
146: */
147: struct isapnp_softc;
148:
149: #if defined(__alpha__)
150: #include <alpha/isa/isapnp_machdep.h>
151: #elif defined(__i386__)
152: #include <i386/isa/isapnp_machdep.h>
153: #else
154: #error COMPILING ISAPNP FOR UNSUPPORTED MACHINE.
155: #endif
156: #endif /* NISAPNP */
157:
158: # define ISAPNP_WRITE_ADDR(sc, v) \
159: bus_space_write_1(sc->sc_iot, sc->sc_addr_ioh, 0, v)
160: # define ISAPNP_WRITE_DATA(sc, v) \
161: bus_space_write_1(sc->sc_iot, sc->sc_wrdata_ioh, 0, v)
162: # define ISAPNP_READ_DATA(sc) \
163: bus_space_read_1(sc->sc_iot, sc->sc_read_ioh, 0)
164:
165: # define ISAPNP_MALLOC(a) malloc(a, M_DEVBUF, M_WAITOK)
166: # define ISAPNP_FREE(a) free(a, M_DEVBUF)
167: # define ISAPNP_CLONE_SETUP(dest, src) \
168: do { \
169: bzero((dest), sizeof(*(dest))); \
170: (dest)->ia_ic = (src)->ia_ic; \
171: } while (0)
172:
173: #ifndef _DEV_ISA_ISAPNPREG_H_
174: /*
175: * `reg' defines needed only for these structures.
176: */
177: #define ISAPNP_MAX_CARDS 8
178: #define ISAPNP_MAX_IDENT 32
179: #define ISAPNP_MAX_DEVCLASS 16
180: #define ISAPNP_SERIAL_SIZE 9
181:
182: #define ISAPNP_NUM_MEM 4
183: #define ISAPNP_NUM_IO 8
184: #define ISAPNP_NUM_IRQ 16
185: #define ISAPNP_NUM_DRQ 8
186: #define ISAPNP_NUM_MEM32 4
187: #endif /* _DEV_ISA_ISAPNPREG_H_ */
188:
189: /*
190: * ISA PnP-specific structures.
191: */
192: struct isapnp_softc {
193: struct device sc_dev;
194: TAILQ_HEAD(, isadev)
195: sc_subdevs; /* list of all children */
196:
197: bus_space_tag_t sc_iot; /* isa io space tag */
198: bus_space_tag_t sc_memt; /* isa mem space tag */
199: #if NISADMA > 0
200: bus_dma_tag_t sc_dmat; /* isa DMA tag */
201: #endif /* NISADMA > 0 */
202:
203: int sc_read_port;
204: bus_space_handle_t sc_addr_ioh;
205: bus_space_handle_t sc_wrdata_ioh;
206: bus_space_handle_t sc_read_ioh;
207: bus_space_handle_t sc_memh;
208: u_int8_t sc_ncards;
209: u_int8_t sc_id[ISAPNP_MAX_CARDS][ISAPNP_SERIAL_SIZE];
210: };
211:
212: struct isapnp_region {
213: bus_space_handle_t h;
214: u_int32_t base;
215:
216: u_int32_t minbase;
217: u_int32_t maxbase;
218: u_int32_t length;
219: u_int32_t align;
220: u_int8_t flags;
221: };
222:
223: struct isapnp_pin {
224: int16_t num;
225: u_int8_t flags:4;
226: u_int8_t type:4;
227: u_int16_t bits;
228: };
229:
230: struct isapnp_knowndev {
231: const char pnpid[8];
232: const char driver[5];
233: };
234:
235: /*
236: * ISA bus attach arguments
237: */
238: struct isabus_attach_args {
239: char *iba_busname; /* XXX should be common */
240: bus_space_tag_t iba_iot; /* isa i/o space tag */
241: bus_space_tag_t iba_memt; /* isa mem space tag */
242: #if NISADMA > 0
243: bus_dma_tag_t iba_dmat; /* isa DMA tag */
244: #endif
245: isa_chipset_tag_t iba_ic;
246: };
247:
248: /*
249: * ISA/ISA PnP shared driver attach arguments
250: */
251: struct isa_attach_args {
252: struct device *ia_isa; /* isa device */
253: bus_space_tag_t ia_iot; /* isa i/o space tag */
254: bus_space_tag_t ia_memt; /* isa mem space tag */
255: #if NISADMA > 0
256: bus_dma_tag_t ia_dmat; /* DMA tag */
257: #endif
258: bus_space_handle_t ia_delaybah; /* i/o handle for `delay port' */
259:
260: isa_chipset_tag_t ia_ic;
261:
262: /*
263: * ISA PnP configuration support. `ipa_' prefixes are used to denote
264: * PnP specific members of this structure.
265: */
266: struct isa_attach_args *ipa_sibling;
267: struct isa_attach_args *ipa_child;
268:
269: char ipa_devident[ISAPNP_MAX_IDENT];
270: char ipa_devlogic[ISAPNP_MAX_DEVCLASS];
271: char ipa_devcompat[ISAPNP_MAX_DEVCLASS];
272: char ipa_devclass[ISAPNP_MAX_DEVCLASS];
273:
274: u_char ipa_pref;
275: u_char ipa_devnum;
276:
277: u_char ipa_nio;
278: u_char ipa_nirq;
279: u_char ipa_ndrq;
280: u_char ipa_nmem;
281: u_char ipa_nmem32;
282:
283: struct isapnp_region ipa_io[ISAPNP_NUM_IO];
284: struct isapnp_region ipa_mem[ISAPNP_NUM_MEM];
285: struct isapnp_region ipa_mem32[ISAPNP_NUM_MEM32];
286: struct isapnp_pin ipa_irq[ISAPNP_NUM_IRQ];
287: struct isapnp_pin ipa_drq[ISAPNP_NUM_DRQ];
288:
289: /*
290: * Compatibility defines for ISA drivers.
291: */
292: #define ia_iobase ipa_io[0].base
293: #define ia_iosize ipa_io[0].length
294: #define ia_ioh ipa_io[0].h
295: #define ia_irq ipa_irq[0].num
296: #define ia_drq ipa_drq[0].num
297: #define ia_drq2 ipa_drq[1].num
298: #define ia_maddr ipa_mem[0].base
299: #define ia_msize ipa_mem[0].length
300: #define ia_memh ipa_mem[0].h
301:
302: void *ia_aux; /* driver specific */
303: };
304:
305: #define IOBASEUNK -1 /* i/o address is unknown */
306: #define IRQUNK -1 /* interrupt request line is unknown */
307: #define DRQUNK -1 /* DMA request line is unknown */
308: #define MADDRUNK -1 /* shared memory address is unknown */
309:
310: /*
311: * Per-device ISA variables
312: */
313: struct isadev {
314: struct device *id_dev; /* back pointer to generic */
315: TAILQ_ENTRY(isadev)
316: id_bchain; /* bus chain */
317: };
318:
319: /*
320: * ISA master bus
321: */
322: struct isa_softc {
323: struct device sc_dev; /* base device */
324: TAILQ_HEAD(, isadev)
325: sc_subdevs; /* list of all children */
326:
327: bus_space_tag_t sc_iot; /* isa io space tag */
328: bus_space_tag_t sc_memt; /* isa mem space tag */
329: #if NISADMA > 0
330: bus_dma_tag_t sc_dmat; /* isa DMA tag */
331: #endif /* NISADMA > 0 */
332:
333: isa_chipset_tag_t sc_ic;
334:
335: #if NISADMA > 0
336: /*
337: * Bitmap representing the DRQ channels available
338: * for ISA.
339: */
340: int sc_drqmap;
341: #define sc_drq sc_drqmap /* XXX compatibility mode */
342:
343: bus_space_handle_t sc_dma1h; /* i/o handle for DMA controller #1 */
344: bus_space_handle_t sc_dma2h; /* i/o handle for DMA controller #2 */
345: bus_space_handle_t sc_dmapgh; /* i/o handle for DMA page registers */
346:
347: /*
348: * DMA maps used for the 8 DMA channels.
349: */
350: bus_dmamap_t sc_dmamaps[8];
351: bus_size_t sc_dmalength[8];
352:
353: int sc_dmareads; /* state for isa_dmadone() */
354: int sc_dmafinished; /* DMA completion state */
355: #endif /* NISADMA > 0 */
356:
357: /*
358: * This i/o handle is used to map port 0x84, which is
359: * read to provide a 1.25us delay. This access handle
360: * is mapped in isaattach(), and exported to drivers
361: * via isa_attach_args.
362: */
363: bus_space_handle_t sc_delaybah;
364: };
365:
366: #define ISA_DRQ_ISFREE(isadev, drq) \
367: ((((struct isa_softc *)(isadev))->sc_drqmap & (1 << (drq))) == 0)
368:
369: #define ISA_DRQ_ALLOC(isadev, drq) \
370: ((struct isa_softc *)(isadev))->sc_drqmap |= (1 << (drq))
371:
372: #define ISA_DRQ_FREE(isadev, drq) \
373: ((struct isa_softc *)(isadev))->sc_drqmap &= ~(1 << (drq))
374:
375: #define cf_iobase cf_loc[0]
376: #define cf_iosize cf_loc[1]
377: #define cf_maddr cf_loc[2]
378: #define cf_msize cf_loc[3]
379: #define cf_irq cf_loc[4]
380: #define cf_drq cf_loc[5]
381: #define cf_drq2 cf_loc[6]
382:
383: /*
384: * ISA interrupt handler manipulation.
385: *
386: * To establish an ISA interrupt handler, a driver calls isa_intr_establish()
387: * with the interrupt number, type, level, function, and function argument of
388: * the interrupt it wants to handle. Isa_intr_establish() returns an opaque
389: * handle to an event descriptor if it succeeds, and invokes panic() if it
390: * fails. (XXX It should return NULL, then drivers should handle that, but
391: * what should they do?) Interrupt handlers should return 0 for "interrupt
392: * not for me", 1 for "I took care of it", or -1 for "I guess it was mine,
393: * but I wasn't expecting it."
394: *
395: * To remove an interrupt handler, the driver calls isa_intr_disestablish()
396: * with the handle returned by isa_intr_establish() for that handler.
397: */
398:
399: /* ISA interrupt sharing types */
400: char *isa_intr_typename(int type);
401:
402: void isascan(struct device *parent, void *match);
403: int isaprint(void *, const char *);
404:
405: /*
406: * Some ISA devices (e.g. on a VLB) can perform 32-bit DMA. This
407: * flag is passed to bus_dmamap_create() to indicate that fact.
408: */
409: #define ISABUS_DMA_32BIT BUS_DMA_BUS1
410:
411: /*
412: * ISA PnP prototypes and support macros.
413: */
414: static __inline void isapnp_write_reg(struct isapnp_softc *, int, u_char);
415: static __inline u_char isapnp_read_reg(struct isapnp_softc *, int);
416:
417: static __inline void
418: isapnp_write_reg(sc, r, v)
419: struct isapnp_softc *sc;
420: int r;
421: u_char v;
422: {
423: ISAPNP_WRITE_ADDR(sc, r);
424: ISAPNP_WRITE_DATA(sc, v);
425: }
426:
427: static __inline u_char
428: isapnp_read_reg(sc, r)
429: struct isapnp_softc *sc;
430: int r;
431: {
432: ISAPNP_WRITE_ADDR(sc, r);
433: return ISAPNP_READ_DATA(sc);
434: }
435:
436: struct isa_attach_args *
437: isapnp_get_resource(struct isapnp_softc *, int, struct isa_attach_args *);
438: char *isapnp_id_to_vendor(char *, const u_char *);
439:
440: int isapnp_config(bus_space_tag_t, bus_space_tag_t,
441: struct isa_attach_args *);
442: void isapnp_unconfig(bus_space_tag_t, bus_space_tag_t,
443: struct isa_attach_args *);
444:
445: void isapnp_isa_attach_hook(struct isa_softc *);
446: #ifdef DEBUG_ISAPNP
447: void isapnp_print_mem(const char *, const struct isapnp_region *);
448: void isapnp_print_io(const char *, const struct isapnp_region *);
449: void isapnp_print_irq(const char *, const struct isapnp_pin *);
450: void isapnp_print_drq(const char *, const struct isapnp_pin *);
451: void isapnp_print_dep_start(const char *, const u_char);
452: void isapnp_print_attach(const struct isa_attach_args *);
453: void isapnp_get_config(struct isapnp_softc *,
454: struct isa_attach_args *);
455: void isapnp_print_config(const struct isa_attach_args *);
456: #endif /* DEBUG_ISAPNP */
457: #endif /* _DEV_ISA_ISAVAR_H_ */
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