Annotation of sys/arch/hppa/include/bus.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: bus.h,v 1.25 2007/05/23 18:07:19 kettenis Exp $ */
! 2:
! 3: /*
! 4: * Copyright (c) 1998-2004 Michael Shalayeff
! 5: * All rights reserved.
! 6: *
! 7: * Redistribution and use in source and binary forms, with or without
! 8: * modification, are permitted provided that the following conditions
! 9: * are met:
! 10: * 1. Redistributions of source code must retain the above copyright
! 11: * notice, this list of conditions and the following disclaimer.
! 12: * 2. Redistributions in binary form must reproduce the above copyright
! 13: * notice, this list of conditions and the following disclaimer in the
! 14: * documentation and/or other materials provided with the distribution.
! 15: *
! 16: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 17: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
! 18: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 19: * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
! 20: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
! 21: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
! 22: * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 23: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
! 24: * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
! 25: * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
! 26: * THE POSSIBILITY OF SUCH DAMAGE.
! 27: */
! 28:
! 29:
! 30: #ifndef _MACHINE_BUS_H_
! 31: #define _MACHINE_BUS_H_
! 32:
! 33: #include <machine/cpufunc.h>
! 34:
! 35: /* addresses in bus space */
! 36: typedef u_long bus_addr_t;
! 37: typedef u_long bus_size_t;
! 38:
! 39: /* access methods for bus space */
! 40: typedef u_long bus_space_handle_t;
! 41:
! 42: struct hppa_bus_space_tag {
! 43: void *hbt_cookie;
! 44:
! 45: int (*hbt_map)(void *v, bus_addr_t addr, bus_size_t size,
! 46: int flags, bus_space_handle_t *bshp);
! 47: void (*hbt_unmap)(void *v, bus_space_handle_t bsh,
! 48: bus_size_t size);
! 49: int (*hbt_subregion)(void *v, bus_space_handle_t bsh,
! 50: bus_size_t offset, bus_size_t size,
! 51: bus_space_handle_t *nbshp);
! 52: int (*hbt_alloc)(void *v, bus_addr_t rstart, bus_addr_t rend,
! 53: bus_size_t size, bus_size_t align,
! 54: bus_size_t boundary, int flags,
! 55: bus_addr_t *addrp, bus_space_handle_t *bshp);
! 56: void (*hbt_free)(void *, bus_space_handle_t, bus_size_t);
! 57: void (*hbt_barrier)(void *v, bus_space_handle_t h,
! 58: bus_size_t o, bus_size_t l, int op);
! 59: void *(*hbt_vaddr)(void *v, bus_space_handle_t h);
! 60:
! 61: u_int8_t (*hbt_r1)(void *, bus_space_handle_t, bus_size_t);
! 62: u_int16_t (*hbt_r2)(void *, bus_space_handle_t, bus_size_t);
! 63: u_int32_t (*hbt_r4)(void *, bus_space_handle_t, bus_size_t);
! 64: u_int64_t (*hbt_r8)(void *, bus_space_handle_t, bus_size_t);
! 65:
! 66: void (*hbt_w1)(void *, bus_space_handle_t, bus_size_t, u_int8_t);
! 67: void (*hbt_w2)(void *, bus_space_handle_t, bus_size_t, u_int16_t);
! 68: void (*hbt_w4)(void *, bus_space_handle_t, bus_size_t, u_int32_t);
! 69: void (*hbt_w8)(void *, bus_space_handle_t, bus_size_t, u_int64_t);
! 70:
! 71: void (*hbt_rm_1)(void *v, bus_space_handle_t h,
! 72: bus_size_t o, u_int8_t *a, bus_size_t c);
! 73: void (*hbt_rm_2)(void *v, bus_space_handle_t h,
! 74: bus_size_t o, u_int16_t *a, bus_size_t c);
! 75: void (*hbt_rm_4)(void *v, bus_space_handle_t h,
! 76: bus_size_t o, u_int32_t *a, bus_size_t c);
! 77: void (*hbt_rm_8)(void *v, bus_space_handle_t h,
! 78: bus_size_t o, u_int64_t *a, bus_size_t c);
! 79:
! 80: void (*hbt_wm_1)(void *v, bus_space_handle_t h, bus_size_t o,
! 81: const u_int8_t *a, bus_size_t c);
! 82: void (*hbt_wm_2)(void *v, bus_space_handle_t h, bus_size_t o,
! 83: const u_int16_t *a, bus_size_t c);
! 84: void (*hbt_wm_4)(void *v, bus_space_handle_t h, bus_size_t o,
! 85: const u_int32_t *a, bus_size_t c);
! 86: void (*hbt_wm_8)(void *v, bus_space_handle_t h, bus_size_t o,
! 87: const u_int64_t *a, bus_size_t c);
! 88:
! 89: void (*hbt_sm_1)(void *v, bus_space_handle_t h, bus_size_t o,
! 90: u_int8_t vv, bus_size_t c);
! 91: void (*hbt_sm_2)(void *v, bus_space_handle_t h, bus_size_t o,
! 92: u_int16_t vv, bus_size_t c);
! 93: void (*hbt_sm_4)(void *v, bus_space_handle_t h, bus_size_t o,
! 94: u_int32_t vv, bus_size_t c);
! 95: void (*hbt_sm_8)(void *v, bus_space_handle_t h, bus_size_t o,
! 96: u_int64_t vv, bus_size_t c);
! 97:
! 98: void (*hbt_rrm_2)(void *v, bus_space_handle_t h,
! 99: bus_size_t o, u_int8_t *a, bus_size_t c);
! 100: void (*hbt_rrm_4)(void *v, bus_space_handle_t h,
! 101: bus_size_t o, u_int8_t *a, bus_size_t c);
! 102: void (*hbt_rrm_8)(void *v, bus_space_handle_t h,
! 103: bus_size_t o, u_int8_t *a, bus_size_t c);
! 104:
! 105: void (*hbt_wrm_2)(void *v, bus_space_handle_t h,
! 106: bus_size_t o, const u_int8_t *a, bus_size_t c);
! 107: void (*hbt_wrm_4)(void *v, bus_space_handle_t h,
! 108: bus_size_t o, const u_int8_t *a, bus_size_t c);
! 109: void (*hbt_wrm_8)(void *v, bus_space_handle_t h,
! 110: bus_size_t o, const u_int8_t *a, bus_size_t c);
! 111:
! 112: void (*hbt_rr_1)(void *v, bus_space_handle_t h,
! 113: bus_size_t o, u_int8_t *a, bus_size_t c);
! 114: void (*hbt_rr_2)(void *v, bus_space_handle_t h,
! 115: bus_size_t o, u_int16_t *a, bus_size_t c);
! 116: void (*hbt_rr_4)(void *v, bus_space_handle_t h,
! 117: bus_size_t o, u_int32_t *a, bus_size_t c);
! 118: void (*hbt_rr_8)(void *v, bus_space_handle_t h,
! 119: bus_size_t o, u_int64_t *a, bus_size_t c);
! 120:
! 121: void (*hbt_wr_1)(void *v, bus_space_handle_t h,
! 122: bus_size_t o, const u_int8_t *a, bus_size_t c);
! 123: void (*hbt_wr_2)(void *v, bus_space_handle_t h,
! 124: bus_size_t o, const u_int16_t *a, bus_size_t c);
! 125: void (*hbt_wr_4)(void *v, bus_space_handle_t h,
! 126: bus_size_t o, const u_int32_t *a, bus_size_t c);
! 127: void (*hbt_wr_8)(void *v, bus_space_handle_t h,
! 128: bus_size_t o, const u_int64_t *a, bus_size_t c);
! 129:
! 130: void (*hbt_rrr_2)(void *v, bus_space_handle_t h,
! 131: bus_size_t o, u_int8_t *a, bus_size_t c);
! 132: void (*hbt_rrr_4)(void *v, bus_space_handle_t h,
! 133: bus_size_t o, u_int8_t *a, bus_size_t c);
! 134: void (*hbt_rrr_8)(void *v, bus_space_handle_t h,
! 135: bus_size_t o, u_int8_t *a, bus_size_t c);
! 136:
! 137: void (*hbt_wrr_2)(void *v, bus_space_handle_t h,
! 138: bus_size_t o, const u_int8_t *a, bus_size_t c);
! 139: void (*hbt_wrr_4)(void *v, bus_space_handle_t h,
! 140: bus_size_t o, const u_int8_t *a, bus_size_t c);
! 141: void (*hbt_wrr_8)(void *v, bus_space_handle_t h,
! 142: bus_size_t o, const u_int8_t *a, bus_size_t c);
! 143:
! 144: void (*hbt_sr_1)(void *v, bus_space_handle_t h,
! 145: bus_size_t o, u_int8_t vv, bus_size_t c);
! 146: void (*hbt_sr_2)(void *v, bus_space_handle_t h,
! 147: bus_size_t o, u_int16_t vv, bus_size_t c);
! 148: void (*hbt_sr_4)(void *v, bus_space_handle_t h,
! 149: bus_size_t o, u_int32_t vv, bus_size_t c);
! 150: void (*hbt_sr_8)(void *v, bus_space_handle_t h,
! 151: bus_size_t o, u_int64_t vv, bus_size_t c);
! 152:
! 153: void (*hbt_cp_1)(void *v, bus_space_handle_t h1, bus_size_t o1,
! 154: bus_space_handle_t h2, bus_size_t o2, bus_size_t c);
! 155: void (*hbt_cp_2)(void *v, bus_space_handle_t h1, bus_size_t o1,
! 156: bus_space_handle_t h2, bus_size_t o2, bus_size_t c);
! 157: void (*hbt_cp_4)(void *v, bus_space_handle_t h1, bus_size_t o1,
! 158: bus_space_handle_t h2, bus_size_t o2, bus_size_t c);
! 159: void (*hbt_cp_8)(void *v, bus_space_handle_t h1, bus_size_t o1,
! 160: bus_space_handle_t h2, bus_size_t o2, bus_size_t c);
! 161: };
! 162: typedef const struct hppa_bus_space_tag *bus_space_tag_t;
! 163: extern const struct hppa_bus_space_tag hppa_bustag;
! 164:
! 165: /* flags for bus space map functions */
! 166: #define BUS_SPACE_MAP_CACHEABLE 0x0001
! 167: #define BUS_SPACE_MAP_LINEAR 0x0002
! 168: #define BUS_SPACE_MAP_READONLY 0x0004
! 169: #define BUS_SPACE_MAP_PREFETCHABLE 0x0008
! 170: #define BUS_SPACE_MAP_NOEXTENT 0x8000 /* no extent ops */
! 171:
! 172: /* bus access routines */
! 173:
! 174: #define bus_space_map(t,a,c,ca,hp) \
! 175: (((t)->hbt_map)((t)->hbt_cookie,(a),(c),(ca),(hp)))
! 176: #define bus_space_unmap(t,h,c) \
! 177: (((t)->hbt_unmap)((t)->hbt_cookie,(h),(c)))
! 178: #define bus_space_subregion(t,h,o,c,hp) \
! 179: (((t)->hbt_subregion)((t)->hbt_cookie,(h),(o),(c),(hp)))
! 180: #define bus_space_alloc(t,b,e,c,al,bn,ca,ap,hp) \
! 181: (((t)->hbt_alloc)((t)->hbt_cookie,(b),(e),(c),(al),(bn),(ca),(ap),(hp)))
! 182: #define bus_space_free(t,h,c) \
! 183: (((t)->hbt_free)((t)->hbt_cookie,(h),(c)))
! 184:
! 185: #define bus_space_read_1(t,h,o) (((t)->hbt_r1)((t)->hbt_cookie,(h),(o)))
! 186: #define bus_space_read_2(t,h,o) (((t)->hbt_r2)((t)->hbt_cookie,(h),(o)))
! 187: #define bus_space_read_4(t,h,o) (((t)->hbt_r4)((t)->hbt_cookie,(h),(o)))
! 188: #define bus_space_read_8(t,h,o) (((t)->hbt_r8)((t)->hbt_cookie,(h),(o)))
! 189:
! 190: #define bus_space_write_1(t,h,o,v) (((t)->hbt_w1)((t)->hbt_cookie,(h),(o),(v)))
! 191: #define bus_space_write_2(t,h,o,v) (((t)->hbt_w2)((t)->hbt_cookie,(h),(o),(v)))
! 192: #define bus_space_write_4(t,h,o,v) (((t)->hbt_w4)((t)->hbt_cookie,(h),(o),(v)))
! 193: #define bus_space_write_8(t,h,o,v) (((t)->hbt_w8)((t)->hbt_cookie,(h),(o),(v)))
! 194:
! 195: #define bus_space_read_multi_1(t,h,o,a,c) \
! 196: (((t)->hbt_rm_1)((t)->hbt_cookie, (h), (o), (a), (c)))
! 197: #define bus_space_read_multi_2(t,h,o,a,c) \
! 198: (((t)->hbt_rm_2)((t)->hbt_cookie, (h), (o), (a), (c)))
! 199: #define bus_space_read_multi_4(t,h,o,a,c) \
! 200: (((t)->hbt_rm_4)((t)->hbt_cookie, (h), (o), (a), (c)))
! 201: #define bus_space_read_multi_8(t,h,o,a,c) \
! 202: (((t)->hbt_rm_8)((t)->hbt_cookie, (h), (o), (a), (c)))
! 203:
! 204: #define bus_space_write_multi_1(t,h,o,a,c) \
! 205: (((t)->hbt_wm_1)((t)->hbt_cookie, (h), (o), (a), (c)))
! 206: #define bus_space_write_multi_2(t,h,o,a,c) \
! 207: (((t)->hbt_wm_2)((t)->hbt_cookie, (h), (o), (a), (c)))
! 208: #define bus_space_write_multi_4(t,h,o,a,c) \
! 209: (((t)->hbt_wm_4)((t)->hbt_cookie, (h), (o), (a), (c)))
! 210: #define bus_space_write_multi_8(t,h,o,a,c) \
! 211: (((t)->hbt_wm_8)((t)->hbt_cookie, (h), (o), (a), (c)))
! 212:
! 213: #define bus_space_set_multi_1(t,h,o,v,c) \
! 214: (((t)->hbt_sm_1)((t)->hbt_cookie, (h), (o), (v), (c)))
! 215: #define bus_space_set_multi_2(t,h,o,v,c) \
! 216: (((t)->hbt_sm_2)((t)->hbt_cookie, (h), (o), (v), (c)))
! 217: #define bus_space_set_multi_4(t,h,o,v,c) \
! 218: (((t)->hbt_sm_4)((t)->hbt_cookie, (h), (o), (v), (c)))
! 219: #define bus_space_set_multi_8(t,h,o,v,c) \
! 220: (((t)->hbt_sm_8)((t)->hbt_cookie, (h), (o), (v), (c)))
! 221:
! 222: #define bus_space_read_raw_multi_2(t, h, o, a, c) \
! 223: (((t)->hbt_rrm_2)((t)->hbt_cookie, (h), (o), (a), (c)))
! 224: #define bus_space_read_raw_multi_4(t, h, o, a, c) \
! 225: (((t)->hbt_rrm_4)((t)->hbt_cookie, (h), (o), (a), (c)))
! 226: #define bus_space_read_raw_multi_8(t, h, o, a, c) \
! 227: (((t)->hbt_rrm_8)((t)->hbt_cookie, (h), (o), (a), (c)))
! 228:
! 229: #define bus_space_write_raw_multi_2(t, h, o, a, c) \
! 230: (((t)->hbt_wrm_2)((t)->hbt_cookie, (h), (o), (a), (c)))
! 231: #define bus_space_write_raw_multi_4(t, h, o, a, c) \
! 232: (((t)->hbt_wrm_4)((t)->hbt_cookie, (h), (o), (a), (c)))
! 233: #define bus_space_write_raw_multi_8(t, h, o, a, c) \
! 234: (((t)->hbt_wrm_8)((t)->hbt_cookie, (h), (o), (a), (c)))
! 235:
! 236: #define bus_space_read_region_1(t, h, o, a, c) \
! 237: (((t)->hbt_rr_1)((t)->hbt_cookie, (h), (o), (a), (c)))
! 238: #define bus_space_read_region_2(t, h, o, a, c) \
! 239: (((t)->hbt_rr_2)((t)->hbt_cookie, (h), (o), (a), (c)))
! 240: #define bus_space_read_region_4(t, h, o, a, c) \
! 241: (((t)->hbt_rr_4)((t)->hbt_cookie, (h), (o), (a), (c)))
! 242: #define bus_space_read_region_8(t, h, o, a, c) \
! 243: (((t)->hbt_rr_8)((t)->hbt_cookie, (h), (o), (a), (c)))
! 244:
! 245: #define bus_space_write_region_1(t, h, o, a, c) \
! 246: (((t)->hbt_wr_1)((t)->hbt_cookie, (h), (o), (a), (c)))
! 247: #define bus_space_write_region_2(t, h, o, a, c) \
! 248: (((t)->hbt_wr_2)((t)->hbt_cookie, (h), (o), (a), (c)))
! 249: #define bus_space_write_region_4(t, h, o, a, c) \
! 250: (((t)->hbt_wr_4)((t)->hbt_cookie, (h), (o), (a), (c)))
! 251: #define bus_space_write_region_8(t, h, o, a, c) \
! 252: (((t)->hbt_wr_8)((t)->hbt_cookie, (h), (o), (a), (c)))
! 253:
! 254: #define bus_space_read_raw_region_2(t, h, o, a, c) \
! 255: (((t)->hbt_rrr_2)((t)->hbt_cookie, (h), (o), (a), (c)))
! 256: #define bus_space_read_raw_region_4(t, h, o, a, c) \
! 257: (((t)->hbt_rrr_4)((t)->hbt_cookie, (h), (o), (a), (c)))
! 258: #define bus_space_read_raw_region_8(t, h, o, a, c) \
! 259: (((t)->hbt_rrr_8)((t)->hbt_cookie, (h), (o), (a), (c)))
! 260:
! 261: #define bus_space_write_raw_region_2(t, h, o, a, c) \
! 262: (((t)->hbt_wrr_2)((t)->hbt_cookie, (h), (o), (a), (c)))
! 263: #define bus_space_write_raw_region_4(t, h, o, a, c) \
! 264: (((t)->hbt_wrr_4)((t)->hbt_cookie, (h), (o), (a), (c)))
! 265: #define bus_space_write_raw_region_8(t, h, o, a, c) \
! 266: (((t)->hbt_wrr_8)((t)->hbt_cookie, (h), (o), (a), (c)))
! 267:
! 268: #define bus_space_set_region_1(t, h, o, v, c) \
! 269: (((t)->hbt_sr_1)((t)->hbt_cookie, (h), (o), (v), (c)))
! 270: #define bus_space_set_region_2(t, h, o, v, c) \
! 271: (((t)->hbt_sr_2)((t)->hbt_cookie, (h), (o), (v), (c)))
! 272: #define bus_space_set_region_4(t, h, o, v, c) \
! 273: (((t)->hbt_sr_4)((t)->hbt_cookie, (h), (o), (v), (c)))
! 274: #define bus_space_set_region_8(t, h, o, v, c) \
! 275: (((t)->hbt_sr_8)((t)->hbt_cookie, (h), (o), (v), (c)))
! 276:
! 277: #define bus_space_copy_1(t, h1, o1, h2, o2, c) \
! 278: (((t)->hbt_cp_1)((t)->hbt_cookie, (h1), (o1), (h2), (o2), (c)))
! 279: #define bus_space_copy_2(t, h1, o1, h2, o2, c) \
! 280: (((t)->hbt_cp_2)((t)->hbt_cookie, (h1), (o1), (h2), (o2), (c)))
! 281: #define bus_space_copy_4(t, h1, o1, h2, o2, c) \
! 282: (((t)->hbt_cp_4)((t)->hbt_cookie, (h1), (o1), (h2), (o2), (c)))
! 283: #define bus_space_copy_8(t, h1, o1, h2, o2, c) \
! 284: (((t)->hbt_cp_8)((t)->hbt_cookie, (h1), (o1), (h2), (o2), (c)))
! 285:
! 286: #define BUS_SPACE_BARRIER_READ 0
! 287: #define BUS_SPACE_BARRIER_WRITE 1
! 288:
! 289: #define bus_space_barrier(t,h,o,l,op) \
! 290: ((t)->hbt_barrier((t)->hbt_cookie, (h), (o), (l), (op)))
! 291: #define bus_space_vaddr(t,h) \
! 292: ((t)->hbt_vaddr((t)->hbt_cookie, (h)))
! 293:
! 294: #define BUS_DMA_WAITOK 0x000 /* safe to sleep (pseudo-flag) */
! 295: #define BUS_DMA_NOWAIT 0x001 /* not safe to sleep */
! 296: #define BUS_DMA_ALLOCNOW 0x002 /* perform resource allocation now */
! 297: #define BUS_DMA_COHERENT 0x004 /* hint: map memory DMA coherent */
! 298: #define BUS_DMAMEM_NOSYNC 0x010
! 299: #define BUS_DMA_BUS1 0x020 /* placeholders for bus functions... */
! 300: #define BUS_DMA_BUS2 0x040
! 301: #define BUS_DMA_BUS3 0x080
! 302: #define BUS_DMA_BUS4 0x100
! 303: #define BUS_DMA_STREAMING 0x200 /* hint: sequential, unidirectional */
! 304: #define BUS_DMA_READ 0x400 /* mapping is device -> memory only */
! 305: #define BUS_DMA_WRITE 0x800 /* mapping is memory -> device only */
! 306:
! 307: /* Forwards needed by prototypes below. */
! 308: struct mbuf;
! 309: struct proc;
! 310: struct uio;
! 311:
! 312: /* Operations performed by bus_dmamap_sync(). */
! 313: #define BUS_DMASYNC_POSTREAD 0x01
! 314: #define BUS_DMASYNC_POSTWRITE 0x02
! 315: #define BUS_DMASYNC_PREREAD 0x04
! 316: #define BUS_DMASYNC_PREWRITE 0x08
! 317:
! 318: typedef const struct hppa_bus_dma_tag *bus_dma_tag_t;
! 319: typedef struct hppa_bus_dmamap *bus_dmamap_t;
! 320:
! 321: /*
! 322: * bus_dma_segment_t
! 323: *
! 324: * Describes a single contiguous DMA transaction. Values
! 325: * are suitable for programming into DMA registers.
! 326: */
! 327: struct hppa_bus_dma_segment {
! 328: vaddr_t _ds_va; /* needed for syncing */
! 329:
! 330: bus_addr_t ds_addr; /* DMA address */
! 331: bus_size_t ds_len; /* length of transfer */
! 332: };
! 333: typedef struct hppa_bus_dma_segment bus_dma_segment_t;
! 334:
! 335: /*
! 336: * bus_dma_tag_t
! 337: *
! 338: * A machine-dependent opaque type describing the implementation of
! 339: * DMA for a given bus.
! 340: */
! 341:
! 342: struct hppa_bus_dma_tag {
! 343: void *_cookie; /* cookie used in the guts */
! 344:
! 345: /*
! 346: * DMA mapping methods.
! 347: */
! 348: int (*_dmamap_create)(void *, bus_size_t, int,
! 349: bus_size_t, bus_size_t, int, bus_dmamap_t *);
! 350: void (*_dmamap_destroy)(void *, bus_dmamap_t);
! 351: int (*_dmamap_load)(void *, bus_dmamap_t, void *,
! 352: bus_size_t, struct proc *, int);
! 353: int (*_dmamap_load_mbuf)(void *, bus_dmamap_t,
! 354: struct mbuf *, int);
! 355: int (*_dmamap_load_uio)(void *, bus_dmamap_t,
! 356: struct uio *, int);
! 357: int (*_dmamap_load_raw)(void *, bus_dmamap_t,
! 358: bus_dma_segment_t *, int, bus_size_t, int);
! 359: void (*_dmamap_unload)(void *, bus_dmamap_t);
! 360: void (*_dmamap_sync)(void *, bus_dmamap_t, bus_addr_t,
! 361: bus_size_t, int);
! 362:
! 363: /*
! 364: * DMA memory utility functions.
! 365: */
! 366: int (*_dmamem_alloc)(void *, bus_size_t, bus_size_t,
! 367: bus_size_t, bus_dma_segment_t *, int, int *, int);
! 368: void (*_dmamem_free)(void *, bus_dma_segment_t *, int);
! 369: int (*_dmamem_map)(void *, bus_dma_segment_t *,
! 370: int, size_t, caddr_t *, int);
! 371: void (*_dmamem_unmap)(void *, caddr_t, size_t);
! 372: paddr_t (*_dmamem_mmap)(void *, bus_dma_segment_t *,
! 373: int, off_t, int, int);
! 374: };
! 375:
! 376: #define bus_dmamap_create(t, s, n, m, b, f, p) \
! 377: (*(t)->_dmamap_create)((t)->_cookie, (s), (n), (m), (b), (f), (p))
! 378: #define bus_dmamap_destroy(t, p) \
! 379: (*(t)->_dmamap_destroy)((t)->_cookie, (p))
! 380: #define bus_dmamap_load(t, m, b, s, p, f) \
! 381: (*(t)->_dmamap_load)((t)->_cookie, (m), (b), (s), (p), (f))
! 382: #define bus_dmamap_load_mbuf(t, m, b, f) \
! 383: (*(t)->_dmamap_load_mbuf)((t)->_cookie, (m), (b), (f))
! 384: #define bus_dmamap_load_uio(t, m, u, f) \
! 385: (*(t)->_dmamap_load_uio)((t)->_cookie, (m), (u), (f))
! 386: #define bus_dmamap_load_raw(t, m, sg, n, s, f) \
! 387: (*(t)->_dmamap_load_raw)((t)->_cookie, (m), (sg), (n), (s), (f))
! 388: #define bus_dmamap_unload(t, p) \
! 389: (*(t)->_dmamap_unload)((t)->_cookie, (p))
! 390: #define bus_dmamap_sync(t, p, a, l, o) \
! 391: (void)((t)->_dmamap_sync ? \
! 392: (*(t)->_dmamap_sync)((t)->_cookie, (p), (a), (l), (o)) : (void)0)
! 393:
! 394: #define bus_dmamem_alloc(t, s, a, b, sg, n, r, f) \
! 395: (*(t)->_dmamem_alloc)((t)->_cookie, (s), (a), (b), (sg), (n), (r), (f))
! 396: #define bus_dmamem_free(t, sg, n) \
! 397: (*(t)->_dmamem_free)((t)->_cookie, (sg), (n))
! 398: #define bus_dmamem_map(t, sg, n, s, k, f) \
! 399: (*(t)->_dmamem_map)((t)->_cookie, (sg), (n), (s), (k), (f))
! 400: #define bus_dmamem_unmap(t, k, s) \
! 401: (*(t)->_dmamem_unmap)((t)->_cookie, (k), (s))
! 402: #define bus_dmamem_mmap(t, sg, n, o, p, f) \
! 403: (*(t)->_dmamem_mmap)((t)->_cookie, (sg), (n), (o), (p), (f))
! 404:
! 405: /*
! 406: * bus_dmamap_t
! 407: *
! 408: * Describes a DMA mapping.
! 409: */
! 410: struct hppa_bus_dmamap {
! 411: /*
! 412: * PRIVATE MEMBERS: not for use by machine-independent code.
! 413: */
! 414: bus_size_t _dm_size; /* largest DMA transfer mappable */
! 415: int _dm_segcnt; /* number of segs this map can map */
! 416: bus_size_t _dm_maxsegsz; /* largest possible segment */
! 417: bus_size_t _dm_boundary; /* don't cross this */
! 418: int _dm_flags; /* misc. flags */
! 419:
! 420: void *_dm_cookie; /* cookie for bus-specific functions */
! 421:
! 422: /*
! 423: * PUBLIC MEMBERS: these are used by machine-independent code.
! 424: */
! 425: bus_size_t dm_mapsize; /* size of the mapping */
! 426: int dm_nsegs; /* # valid segments in mapping */
! 427: bus_dma_segment_t dm_segs[1]; /* segments; variable length */
! 428: };
! 429:
! 430: #endif /* _MACHINE_BUS_H_ */
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