Annotation of sys/arch/hppa64/include/bus.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: bus.h,v 1.1 2005/04/01 10:40:48 mickey Exp $ */
2:
3: /*
4: * Copyright (c) 2005 Michael Shalayeff
5: * All rights reserved.
6: *
7: * Permission to use, copy, modify, and distribute this software for any
8: * purpose with or without fee is hereby granted, provided that the above
9: * copyright notice and this permission notice appear in all copies.
10: *
11: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15: * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER IN
16: * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
17: * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18: */
19:
20: #ifndef _MACHINE_BUS_H_
21: #define _MACHINE_BUS_H_
22:
23: /* addresses in bus space */
24: typedef u_long bus_addr_t;
25: typedef u_long bus_size_t;
26:
27: /* access methods for bus space */
28: typedef u_long bus_space_handle_t;
29:
30: struct hppa64_bus_space_tag {
31: void *hbt_cookie;
32:
33: int (*hbt_map)(void *v, bus_addr_t addr, bus_size_t size,
34: int flags, bus_space_handle_t *bshp);
35: void (*hbt_unmap)(void *v, bus_space_handle_t bsh, bus_size_t size);
36: int (*hbt_subregion)(void *v, bus_space_handle_t bsh,
37: bus_size_t offset, bus_size_t size,
38: bus_space_handle_t *nbshp);
39: int (*hbt_alloc)(void *v, bus_addr_t rstart, bus_addr_t rend,
40: bus_size_t size, bus_size_t align, bus_size_t boundary,
41: int flags, bus_addr_t *addrp, bus_space_handle_t *bshp);
42: void (*hbt_free)(void *, bus_space_handle_t, bus_size_t);
43: void (*hbt_barrier)(void *v, bus_space_handle_t h,
44: bus_size_t o, bus_size_t l, int op);
45: u_int8_t (*hbt_r1)(void *, bus_space_handle_t, bus_size_t);
46: u_int16_t (*hbt_r2)(void *, bus_space_handle_t, bus_size_t);
47: u_int32_t (*hbt_r4)(void *, bus_space_handle_t, bus_size_t);
48: u_int64_t (*hbt_r8)(void *, bus_space_handle_t, bus_size_t);
49:
50: void (*hbt_w1)(void *, bus_space_handle_t, bus_size_t, u_int8_t);
51: void (*hbt_w2)(void *, bus_space_handle_t, bus_size_t, u_int16_t);
52: void (*hbt_w4)(void *, bus_space_handle_t, bus_size_t, u_int32_t);
53: void (*hbt_w8)(void *, bus_space_handle_t, bus_size_t, u_int64_t);
54:
55: void (*hbt_rm_1)(void *v, bus_space_handle_t h,
56: bus_size_t o, u_int8_t *a, bus_size_t c);
57: void (*hbt_rm_2)(void *v, bus_space_handle_t h,
58: bus_size_t o, u_int16_t *a, bus_size_t c);
59: void (*hbt_rm_4)(void *v, bus_space_handle_t h,
60: bus_size_t o, u_int32_t *a, bus_size_t c);
61: void (*hbt_rm_8)(void *v, bus_space_handle_t h,
62: bus_size_t o, u_int64_t *a, bus_size_t c);
63:
64: void (*hbt_wm_1)(void *v, bus_space_handle_t h, bus_size_t o,
65: const u_int8_t *a, bus_size_t c);
66: void (*hbt_wm_2)(void *v, bus_space_handle_t h, bus_size_t o,
67: const u_int16_t *a, bus_size_t c);
68: void (*hbt_wm_4)(void *v, bus_space_handle_t h, bus_size_t o,
69: const u_int32_t *a, bus_size_t c);
70: void (*hbt_wm_8)(void *v, bus_space_handle_t h, bus_size_t o,
71: const u_int64_t *a, bus_size_t c);
72:
73: void (*hbt_sm_1)(void *v, bus_space_handle_t h, bus_size_t o,
74: u_int8_t vv, bus_size_t c);
75: void (*hbt_sm_2)(void *v, bus_space_handle_t h, bus_size_t o,
76: u_int16_t vv, bus_size_t c);
77: void (*hbt_sm_4)(void *v, bus_space_handle_t h, bus_size_t o,
78: u_int32_t vv, bus_size_t c);
79: void (*hbt_sm_8)(void *v, bus_space_handle_t h, bus_size_t o,
80: u_int64_t vv, bus_size_t c);
81:
82: void (*hbt_rrm_2)(void *v, bus_space_handle_t h,
83: bus_size_t o, u_int8_t *a, bus_size_t c);
84: void (*hbt_rrm_4)(void *v, bus_space_handle_t h,
85: bus_size_t o, u_int8_t *a, bus_size_t c);
86: void (*hbt_rrm_8)(void *v, bus_space_handle_t h,
87: bus_size_t o, u_int8_t *a, bus_size_t c);
88:
89: void (*hbt_wrm_2)(void *v, bus_space_handle_t h,
90: bus_size_t o, const u_int8_t *a, bus_size_t c);
91: void (*hbt_wrm_4)(void *v, bus_space_handle_t h,
92: bus_size_t o, const u_int8_t *a, bus_size_t c);
93: void (*hbt_wrm_8)(void *v, bus_space_handle_t h,
94: bus_size_t o, const u_int8_t *a, bus_size_t c);
95:
96: void (*hbt_rr_1)(void *v, bus_space_handle_t h,
97: bus_size_t o, u_int8_t *a, bus_size_t c);
98: void (*hbt_rr_2)(void *v, bus_space_handle_t h,
99: bus_size_t o, u_int16_t *a, bus_size_t c);
100: void (*hbt_rr_4)(void *v, bus_space_handle_t h,
101: bus_size_t o, u_int32_t *a, bus_size_t c);
102: void (*hbt_rr_8)(void *v, bus_space_handle_t h,
103: bus_size_t o, u_int64_t *a, bus_size_t c);
104:
105: void (*hbt_wr_1)(void *v, bus_space_handle_t h,
106: bus_size_t o, const u_int8_t *a, bus_size_t c);
107: void (*hbt_wr_2)(void *v, bus_space_handle_t h,
108: bus_size_t o, const u_int16_t *a, bus_size_t c);
109: void (*hbt_wr_4)(void *v, bus_space_handle_t h,
110: bus_size_t o, const u_int32_t *a, bus_size_t c);
111: void (*hbt_wr_8)(void *v, bus_space_handle_t h,
112: bus_size_t o, const u_int64_t *a, bus_size_t c);
113:
114: void (*hbt_rrr_2)(void *v, bus_space_handle_t h,
115: bus_size_t o, u_int8_t *a, bus_size_t c);
116: void (*hbt_rrr_4)(void *v, bus_space_handle_t h,
117: bus_size_t o, u_int8_t *a, bus_size_t c);
118: void (*hbt_rrr_8)(void *v, bus_space_handle_t h,
119: bus_size_t o, u_int8_t *a, bus_size_t c);
120:
121: void (*hbt_wrr_2)(void *v, bus_space_handle_t h,
122: bus_size_t o, const u_int8_t *a, bus_size_t c);
123: void (*hbt_wrr_4)(void *v, bus_space_handle_t h,
124: bus_size_t o, const u_int8_t *a, bus_size_t c);
125: void (*hbt_wrr_8)(void *v, bus_space_handle_t h,
126: bus_size_t o, const u_int8_t *a, bus_size_t c);
127:
128: void (*hbt_sr_1)(void *v, bus_space_handle_t h,
129: bus_size_t o, u_int8_t vv, bus_size_t c);
130: void (*hbt_sr_2)(void *v, bus_space_handle_t h,
131: bus_size_t o, u_int16_t vv, bus_size_t c);
132: void (*hbt_sr_4)(void *v, bus_space_handle_t h,
133: bus_size_t o, u_int32_t vv, bus_size_t c);
134: void (*hbt_sr_8)(void *v, bus_space_handle_t h,
135: bus_size_t o, u_int64_t vv, bus_size_t c);
136:
137: void (*hbt_cp_1)(void *v, bus_space_handle_t h1, bus_size_t o1,
138: bus_space_handle_t h2, bus_size_t o2, bus_size_t c);
139: void (*hbt_cp_2)(void *v, bus_space_handle_t h1, bus_size_t o1,
140: bus_space_handle_t h2, bus_size_t o2, bus_size_t c);
141: void (*hbt_cp_4)(void *v, bus_space_handle_t h1, bus_size_t o1,
142: bus_space_handle_t h2, bus_size_t o2, bus_size_t c);
143: void (*hbt_cp_8)(void *v, bus_space_handle_t h1, bus_size_t o1,
144: bus_space_handle_t h2, bus_size_t o2, bus_size_t c);
145: };
146: typedef struct hppa64_bus_space_tag *bus_space_tag_t;
147:
148: /* flags for bus space map functions */
149: #define BUS_SPACE_MAP_CACHEABLE 0x0001
150: #define BUS_SPACE_MAP_LINEAR 0x0002
151: #define BUS_SPACE_MAP_READONLY 0x0004
152: #define BUS_SPACE_MAP_PREFETCHABLE 0x0008
153:
154: /* bus access routines */
155:
156: #define bus_space_map(t,a,c,ca,hp) \
157: (((t)->hbt_map)((t)->hbt_cookie,(a),(c),(ca),(hp)))
158: #define bus_space_unmap(t,h,c) \
159: (((t)->hbt_unmap)((t)->hbt_cookie,(h),(c)))
160: #define bus_space_subregion(t,h,o,c,hp) \
161: (((t)->hbt_subregion)((t)->hbt_cookie,(h),(o),(c),(hp)))
162: #define bus_space_alloc(t,b,e,c,al,bn,ca,ap,hp) \
163: (((t)->hbt_alloc)((t)->hbt_cookie,(b),(e),(c),(al),(bn),(ca),(ap),(hp)))
164: #define bus_space_free(t,h,c) \
165: (((t)->hbt_free)((t)->hbt_cookie,(h),(c)))
166:
167: #define BUS_SPACE_BARRIER_READ 0
168: #define BUS_SPACE_BARRIER_WRITE 1
169:
170: #define bus_space_barrier(t,h,o,l,op) \
171: ((t)->hbt_barrier((t)->hbt_cookie, (h), (o), (l), (op)))
172: #define bus_space_vaddr(t,h) ((vaddr_t)(h))
173:
174: #define bus_space_read_1(t,h,o) (((t)->hbt_r1)((t)->hbt_cookie,(h),(o)))
175: #define bus_space_read_2(t,h,o) (((t)->hbt_r2)((t)->hbt_cookie,(h),(o)))
176: #define bus_space_read_4(t,h,o) (((t)->hbt_r4)((t)->hbt_cookie,(h),(o)))
177: #define bus_space_read_8(t,h,o) (((t)->hbt_r8)((t)->hbt_cookie,(h),(o)))
178:
179: #define bus_space_write_1(t,h,o,v) (((t)->hbt_w1)((t)->hbt_cookie,(h),(o),(v)))
180: #define bus_space_write_2(t,h,o,v) (((t)->hbt_w2)((t)->hbt_cookie,(h),(o),(v)))
181: #define bus_space_write_4(t,h,o,v) (((t)->hbt_w4)((t)->hbt_cookie,(h),(o),(v)))
182: #define bus_space_write_8(t,h,o,v) (((t)->hbt_w8)((t)->hbt_cookie,(h),(o),(v)))
183:
184: #define bus_space_read_multi_1(t,h,o,a,c) \
185: (((t)->hbt_rm_1)((t)->hbt_cookie, (h), (o), (a), (c)))
186: #define bus_space_read_multi_2(t,h,o,a,c) \
187: (((t)->hbt_rm_2)((t)->hbt_cookie, (h), (o), (a), (c)))
188: #define bus_space_read_multi_4(t,h,o,a,c) \
189: (((t)->hbt_rm_4)((t)->hbt_cookie, (h), (o), (a), (c)))
190: #define bus_space_read_multi_8(t,h,o,a,c) \
191: (((t)->hbt_rm_8)((t)->hbt_cookie, (h), (o), (a), (c)))
192:
193: #define bus_space_write_multi_1(t,h,o,a,c) \
194: (((t)->hbt_wm_1)((t)->hbt_cookie, (h), (o), (a), (c)))
195: #define bus_space_write_multi_2(t,h,o,a,c) \
196: (((t)->hbt_wm_2)((t)->hbt_cookie, (h), (o), (a), (c)))
197: #define bus_space_write_multi_4(t,h,o,a,c) \
198: (((t)->hbt_wm_4)((t)->hbt_cookie, (h), (o), (a), (c)))
199: #define bus_space_write_multi_8(t,h,o,a,c) \
200: (((t)->hbt_wm_8)((t)->hbt_cookie, (h), (o), (a), (c)))
201:
202: #define bus_space_set_multi_1(t,h,o,v,c) \
203: (((t)->hbt_sm_1)((t)->hbt_cookie, (h), (o), (v), (c)))
204: #define bus_space_set_multi_2(t,h,o,v,c) \
205: (((t)->hbt_sm_2)((t)->hbt_cookie, (h), (o), (v), (c)))
206: #define bus_space_set_multi_4(t,h,o,v,c) \
207: (((t)->hbt_sm_4)((t)->hbt_cookie, (h), (o), (v), (c)))
208: #define bus_space_set_multi_8(t,h,o,v,c) \
209: (((t)->hbt_sm_8)((t)->hbt_cookie, (h), (o), (v), (c)))
210:
211: #define bus_space_read_raw_multi_2(t, h, o, a, c) \
212: (((t)->hbt_rrm_2)((t)->hbt_cookie, (h), (o), (a), (c)))
213: #define bus_space_read_raw_multi_4(t, h, o, a, c) \
214: (((t)->hbt_rrm_4)((t)->hbt_cookie, (h), (o), (a), (c)))
215: #define bus_space_read_raw_multi_8(t, h, o, a, c) \
216: (((t)->hbt_rrm_8)((t)->hbt_cookie, (h), (o), (a), (c)))
217:
218: #define bus_space_write_raw_multi_2(t, h, o, a, c) \
219: (((t)->hbt_wrm_2)((t)->hbt_cookie, (h), (o), (a), (c)))
220: #define bus_space_write_raw_multi_4(t, h, o, a, c) \
221: (((t)->hbt_wrm_4)((t)->hbt_cookie, (h), (o), (a), (c)))
222: #define bus_space_write_raw_multi_8(t, h, o, a, c) \
223: (((t)->hbt_wrm_8)((t)->hbt_cookie, (h), (o), (a), (c)))
224:
225: #define bus_space_read_region_1(t, h, o, a, c) \
226: (((t)->hbt_rr_1)((t)->hbt_cookie, (h), (o), (a), (c)))
227: #define bus_space_read_region_2(t, h, o, a, c) \
228: (((t)->hbt_rr_2)((t)->hbt_cookie, (h), (o), (a), (c)))
229: #define bus_space_read_region_4(t, h, o, a, c) \
230: (((t)->hbt_rr_4)((t)->hbt_cookie, (h), (o), (a), (c)))
231: #define bus_space_read_region_8(t, h, o, a, c) \
232: (((t)->hbt_rr_8)((t)->hbt_cookie, (h), (o), (a), (c)))
233:
234: #define bus_space_write_region_1(t, h, o, a, c) \
235: (((t)->hbt_wr_1)((t)->hbt_cookie, (h), (o), (a), (c)))
236: #define bus_space_write_region_2(t, h, o, a, c) \
237: (((t)->hbt_wr_2)((t)->hbt_cookie, (h), (o), (a), (c)))
238: #define bus_space_write_region_4(t, h, o, a, c) \
239: (((t)->hbt_wr_4)((t)->hbt_cookie, (h), (o), (a), (c)))
240: #define bus_space_write_region_8(t, h, o, a, c) \
241: (((t)->hbt_wr_8)((t)->hbt_cookie, (h), (o), (a), (c)))
242:
243: #define bus_space_read_raw_region_2(t, h, o, a, c) \
244: (((t)->hbt_rrr_2)((t)->hbt_cookie, (h), (o), (a), (c)))
245: #define bus_space_read_raw_region_4(t, h, o, a, c) \
246: (((t)->hbt_rrr_4)((t)->hbt_cookie, (h), (o), (a), (c)))
247: #define bus_space_read_raw_region_8(t, h, o, a, c) \
248: (((t)->hbt_rrr_8)((t)->hbt_cookie, (h), (o), (a), (c)))
249:
250: #define bus_space_write_raw_region_2(t, h, o, a, c) \
251: (((t)->hbt_wrr_2)((t)->hbt_cookie, (h), (o), (a), (c)))
252: #define bus_space_write_raw_region_4(t, h, o, a, c) \
253: (((t)->hbt_wrr_4)((t)->hbt_cookie, (h), (o), (a), (c)))
254: #define bus_space_write_raw_region_8(t, h, o, a, c) \
255: (((t)->hbt_wrr_8)((t)->hbt_cookie, (h), (o), (a), (c)))
256:
257: #define bus_space_set_region_1(t, h, o, v, c) \
258: (((t)->hbt_sr_1)((t)->hbt_cookie, (h), (o), (v), (c)))
259: #define bus_space_set_region_2(t, h, o, v, c) \
260: (((t)->hbt_sr_2)((t)->hbt_cookie, (h), (o), (v), (c)))
261: #define bus_space_set_region_4(t, h, o, v, c) \
262: (((t)->hbt_sr_4)((t)->hbt_cookie, (h), (o), (v), (c)))
263: #define bus_space_set_region_8(t, h, o, v, c) \
264: (((t)->hbt_sr_8)((t)->hbt_cookie, (h), (o), (v), (c)))
265:
266: #define bus_space_copy_1(t, h1, o1, h2, o2, c) \
267: (((t)->hbt_cp_1)((t)->hbt_cookie, (h1), (o1), (h2), (o2), (c)))
268: #define bus_space_copy_2(t, h1, o1, h2, o2, c) \
269: (((t)->hbt_cp_2)((t)->hbt_cookie, (h1), (o1), (h2), (o2), (c)))
270: #define bus_space_copy_4(t, h1, o1, h2, o2, c) \
271: (((t)->hbt_cp_4)((t)->hbt_cookie, (h1), (o1), (h2), (o2), (c)))
272: #define bus_space_copy_8(t, h1, o1, h2, o2, c) \
273: (((t)->hbt_cp_8)((t)->hbt_cookie, (h1), (o1), (h2), (o2), (c)))
274: #define BUS_DMA_WAITOK 0x000 /* safe to sleep (pseudo-flag) */
275: #define BUS_DMA_NOWAIT 0x001 /* not safe to sleep */
276: #define BUS_DMA_ALLOCNOW 0x002 /* perform resource allocation now */
277: #define BUS_DMA_COHERENT 0x004 /* hint: map memory DMA coherent */
278: #define BUS_DMAMEM_NOSYNC 0x010
279: #define BUS_DMA_BUS1 0x020 /* placeholders for bus functions... */
280: #define BUS_DMA_BUS2 0x040
281: #define BUS_DMA_BUS3 0x080
282: #define BUS_DMA_BUS4 0x100
283: #define BUS_DMA_STREAMING 0x200 /* hint: sequential, unidirectional */
284: #define BUS_DMA_READ 0x400 /* mapping is device -> memory only */
285: #define BUS_DMA_WRITE 0x800 /* mapping is memory -> device only */
286:
287: /* Forwards needed by prototypes below. */
288: struct mbuf;
289: struct proc;
290: struct uio;
291:
292: /* Operations performed by bus_dmamap_sync(). */
293: #define BUS_DMASYNC_POSTREAD 0x01
294: #define BUS_DMASYNC_POSTWRITE 0x02
295: #define BUS_DMASYNC_PREREAD 0x04
296: #define BUS_DMASYNC_PREWRITE 0x08
297:
298: typedef const struct hppa64_bus_dma_tag *bus_dma_tag_t;
299: typedef struct hppa64_bus_dmamap *bus_dmamap_t;
300:
301: /*
302: * bus_dma_segment_t
303: *
304: * Describes a single contiguous DMA transaction. Values
305: * are suitable for programming into DMA registers.
306: */
307: struct hppa64_bus_dma_segment {
308: vaddr_t _ds_va; /* needed for syncing */
309:
310: bus_addr_t ds_addr; /* DMA address */
311: bus_size_t ds_len; /* length of transfer */
312: };
313: typedef struct hppa64_bus_dma_segment bus_dma_segment_t;
314:
315: /*
316: * bus_dma_tag_t
317: *
318: * A machine-dependent opaque type describing the implementation of
319: * DMA for a given bus.
320: */
321:
322: struct hppa64_bus_dma_tag {
323: void *_cookie; /* cookie used in the guts */
324:
325: /*
326: * DMA mapping methods.
327: */
328: int (*_dmamap_create)(void *, bus_size_t, int,
329: bus_size_t, bus_size_t, int, bus_dmamap_t *);
330: void (*_dmamap_destroy)(void *, bus_dmamap_t);
331: int (*_dmamap_load)(void *, bus_dmamap_t, void *,
332: bus_size_t, struct proc *, int);
333: int (*_dmamap_load_mbuf)(void *, bus_dmamap_t,
334: struct mbuf *, int);
335: int (*_dmamap_load_uio)(void *, bus_dmamap_t,
336: struct uio *, int);
337: int (*_dmamap_load_raw)(void *, bus_dmamap_t,
338: bus_dma_segment_t *, int, bus_size_t, int);
339: void (*_dmamap_unload)(void *, bus_dmamap_t);
340: void (*_dmamap_sync)(void *, bus_dmamap_t, bus_addr_t,
341: bus_size_t, int);
342:
343: /*
344: * DMA memory utility functions.
345: */
346: int (*_dmamem_alloc)(void *, bus_size_t, bus_size_t,
347: bus_size_t, bus_dma_segment_t *, int, int *, int);
348: void (*_dmamem_free)(void *, bus_dma_segment_t *, int);
349: int (*_dmamem_map)(void *, bus_dma_segment_t *,
350: int, size_t, caddr_t *, int);
351: void (*_dmamem_unmap)(void *, caddr_t, size_t);
352: paddr_t (*_dmamem_mmap)(void *, bus_dma_segment_t *,
353: int, off_t, int, int);
354: };
355:
356: #define bus_dmamap_create(t, s, n, m, b, f, p) \
357: (*(t)->_dmamap_create)((t)->_cookie, (s), (n), (m), (b), (f), (p))
358: #define bus_dmamap_destroy(t, p) \
359: (*(t)->_dmamap_destroy)((t)->_cookie, (p))
360: #define bus_dmamap_load(t, m, b, s, p, f) \
361: (*(t)->_dmamap_load)((t)->_cookie, (m), (b), (s), (p), (f))
362: #define bus_dmamap_load_mbuf(t, m, b, f) \
363: (*(t)->_dmamap_load_mbuf)((t)->_cookie, (m), (b), (f))
364: #define bus_dmamap_load_uio(t, m, u, f) \
365: (*(t)->_dmamap_load_uio)((t)->_cookie, (m), (u), (f))
366: #define bus_dmamap_load_raw(t, m, sg, n, s, f) \
367: (*(t)->_dmamap_load_raw)((t)->_cookie, (m), (sg), (n), (s), (f))
368: #define bus_dmamap_unload(t, p) \
369: (*(t)->_dmamap_unload)((t)->_cookie, (p))
370: #define bus_dmamap_sync(t, p, a, l, o) \
371: (void)((t)->_dmamap_sync ? \
372: (*(t)->_dmamap_sync)((t)->_cookie, (p), (a), (l), (o)) : (void)0)
373:
374: #define bus_dmamem_alloc(t, s, a, b, sg, n, r, f) \
375: (*(t)->_dmamem_alloc)((t)->_cookie, (s), (a), (b), (sg), (n), (r), (f))
376: #define bus_dmamem_free(t, sg, n) \
377: (*(t)->_dmamem_free)((t)->_cookie, (sg), (n))
378: #define bus_dmamem_map(t, sg, n, s, k, f) \
379: (*(t)->_dmamem_map)((t)->_cookie, (sg), (n), (s), (k), (f))
380: #define bus_dmamem_unmap(t, k, s) \
381: (*(t)->_dmamem_unmap)((t)->_cookie, (k), (s))
382: #define bus_dmamem_mmap(t, sg, n, o, p, f) \
383: (*(t)->_dmamem_mmap)((t)->_cookie, (sg), (n), (o), (p), (f))
384:
385: /*
386: * bus_dmamap_t
387: *
388: * Describes a DMA mapping.
389: */
390: struct hppa64_bus_dmamap {
391: /*
392: * PRIVATE MEMBERS: not for use by machine-independent code.
393: */
394: bus_size_t _dm_size; /* largest DMA transfer mappable */
395: int _dm_segcnt; /* number of segs this map can map */
396: bus_size_t _dm_maxsegsz; /* largest possible segment */
397: bus_size_t _dm_boundary; /* don't cross this */
398: int _dm_flags; /* misc. flags */
399:
400: void *_dm_cookie; /* cookie for bus-specific functions */
401:
402: /*
403: * PUBLIC MEMBERS: these are used by machine-independent code.
404: */
405: bus_size_t dm_mapsize; /* size of the mapping */
406: int dm_nsegs; /* # valid segments in mapping */
407: bus_dma_segment_t dm_segs[1]; /* segments; variable length */
408: };
409:
410: #endif /* _MACHINE_BUS_H_ */
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