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1.7.68.1! mjf 1: /* $NetBSD$ */
1.1 tsutsui 2:
3: /*-
4: * Copyright (c) 1996, 1997, 1998 The NetBSD Foundation, Inc.
5: * All rights reserved.
6: *
7: * This code is derived from software contributed to The NetBSD Foundation
8: * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
9: * NASA Ames Research Center.
10: *
11: * Redistribution and use in source and binary forms, with or without
12: * modification, are permitted provided that the following conditions
13: * are met:
14: * 1. Redistributions of source code must retain the above copyright
15: * notice, this list of conditions and the following disclaimer.
16: * 2. Redistributions in binary form must reproduce the above copyright
17: * notice, this list of conditions and the following disclaimer in the
18: * documentation and/or other materials provided with the distribution.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30: * POSSIBILITY OF SUCH DAMAGE.
31: */
32:
33: /*
34: * Copyright (C) 1997 Scott Reynolds. All rights reserved.
35: *
36: * Redistribution and use in source and binary forms, with or without
37: * modification, are permitted provided that the following conditions
38: * are met:
39: * 1. Redistributions of source code must retain the above copyright
40: * notice, this list of conditions and the following disclaimer.
41: * 2. Redistributions in binary form must reproduce the above copyright
42: * notice, this list of conditions and the following disclaimer in the
43: * documentation and/or other materials provided with the distribution.
44: * 3. The name of the author may not be used to endorse or promote products
45: * derived from this software without specific prior written permission
46: *
47: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
48: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
49: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
50: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
51: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
52: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
53: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
54: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
55: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
56: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
57: */
58:
59: /* bus_space(9) functions for news68k. Just taken from hp300. */
60:
61: #ifndef _NEWS68K_BUS_H_
62: #define _NEWS68K_BUS_H_
63:
64: /*
65: * Values for the news68k bus space tag, not to be used directly by MI code.
66: */
67: #define NEWS68K_BUS_SPACE_INTIO 0 /* space is intio space */
68: #define NEWS68K_BUS_SPACE_EIO 1 /* space is eio space */
69:
70: /*
71: * Bus address and size types
72: */
73: typedef u_long bus_addr_t;
74: typedef u_long bus_size_t;
75:
76: /*
77: * Access methods for bus resources and address space.
78: */
79: typedef int bus_space_tag_t;
80: typedef u_long bus_space_handle_t;
81:
82: /*
1.2 tsutsui 83: * int bus_space_map(bus_space_tag_t t, bus_addr_t addr,
84: * bus_size_t size, int flags, bus_space_handle_t *bshp);
1.1 tsutsui 85: *
86: * Map a region of bus space.
87: */
88:
89: #define BUS_SPACE_MAP_CACHEABLE 0x01
90: #define BUS_SPACE_MAP_LINEAR 0x02
91: #define BUS_SPACE_MAP_PREFETCHABLE 0x04
92:
1.2 tsutsui 93: int bus_space_map(bus_space_tag_t, bus_addr_t, bus_size_t,
94: int, bus_space_handle_t *);
1.1 tsutsui 95:
96: /*
1.2 tsutsui 97: * void bus_space_unmap(bus_space_tag_t t,
98: * bus_space_handle_t bsh, bus_size_t size);
1.1 tsutsui 99: *
100: * Unmap a region of bus space.
101: */
102:
1.2 tsutsui 103: void bus_space_unmap(bus_space_tag_t, bus_space_handle_t, bus_size_t);
1.1 tsutsui 104:
105: /*
1.2 tsutsui 106: * int bus_space_subregion(bus_space_tag_t t,
1.1 tsutsui 107: * bus_space_handle_t bsh, bus_size_t offset, bus_size_t size,
1.2 tsutsui 108: * bus_space_handle_t *nbshp);
1.1 tsutsui 109: *
110: * Get a new handle for a subregion of an already-mapped area of bus space.
111: */
112:
1.2 tsutsui 113: int bus_space_subregion(bus_space_tag_t t, bus_space_handle_t bsh,
114: bus_size_t offset, bus_size_t size, bus_space_handle_t *nbshp);
1.1 tsutsui 115:
116: /*
1.2 tsutsui 117: * int bus_space_alloc(bus_space_tag_t t, bus_addr_t, rstart,
1.1 tsutsui 118: * bus_addr_t rend, bus_size_t size, bus_size_t align,
119: * bus_size_t boundary, int flags, bus_addr_t *addrp,
1.2 tsutsui 120: * bus_space_handle_t *bshp);
1.1 tsutsui 121: *
122: * Allocate a region of bus space.
123: */
124:
1.2 tsutsui 125: int bus_space_alloc(bus_space_tag_t t, bus_addr_t rstart,
1.1 tsutsui 126: bus_addr_t rend, bus_size_t size, bus_size_t align,
127: bus_size_t boundary, int cacheable, bus_addr_t *addrp,
1.2 tsutsui 128: bus_space_handle_t *bshp);
1.1 tsutsui 129:
130: /*
1.2 tsutsui 131: * int bus_space_free(bus_space_tag_t t,
132: * bus_space_handle_t bsh, bus_size_t size);
1.1 tsutsui 133: *
134: * Free a region of bus space.
135: */
136:
1.2 tsutsui 137: void bus_space_free(bus_space_tag_t t, bus_space_handle_t bsh,
138: bus_size_t size);
1.1 tsutsui 139:
140: /*
1.2 tsutsui 141: * int news68k_bus_space_probe(bus_space_tag_t t,
142: * bus_space_handle_t bsh, bus_size_t offset, int sz);
1.1 tsutsui 143: *
144: * Probe the bus at t/bsh/offset, using sz as the size of the load.
145: *
146: * This is a machine-dependent extension, and is not to be used by
147: * machine-independent code.
148: */
149:
1.2 tsutsui 150: int news68k_bus_space_probe(bus_space_tag_t t,
151: bus_space_handle_t bsh, bus_size_t offset, int sz);
1.1 tsutsui 152:
153: /*
1.4 tsutsui 154: * uintN_t bus_space_read_N(bus_space_tag_t tag,
1.2 tsutsui 155: * bus_space_handle_t bsh, bus_size_t offset);
1.1 tsutsui 156: *
157: * Read a 1, 2, 4, or 8 byte quantity from bus space
158: * described by tag/handle/offset.
159: */
160:
161: #define bus_space_read_1(t, h, o) \
1.4 tsutsui 162: ((void) t, (*(volatile uint8_t *)((h) + (o))))
1.1 tsutsui 163:
164: #define bus_space_read_2(t, h, o) \
1.4 tsutsui 165: ((void) t, (*(volatile uint16_t *)((h) + (o))))
1.1 tsutsui 166:
167: #define bus_space_read_4(t, h, o) \
1.4 tsutsui 168: ((void) t, (*(volatile uint32_t *)((h) + (o))))
1.1 tsutsui 169:
170: #if 0 /* Cause a link error for bus_space_read_8 */
171: #define bus_space_read_8(t, h, o) !!! bus_space_read_8 unimplemented !!!
172: #endif
173:
174: /*
1.2 tsutsui 175: * void bus_space_read_multi_N(bus_space_tag_t tag,
1.1 tsutsui 176: * bus_space_handle_t bsh, bus_size_t offset,
1.4 tsutsui 177: * uintN_t *addr, size_t count);
1.1 tsutsui 178: *
179: * Read `count' 1, 2, 4, or 8 byte quantities from bus space
180: * described by tag/handle/offset and copy into buffer provided.
181: */
182:
183: #define bus_space_read_multi_1(t, h, o, a, c) do { \
184: (void) t; \
1.6 perry 185: __asm volatile (" \
1.1 tsutsui 186: movl %0,%%a0 ; \
187: movl %1,%%a1 ; \
188: movl %2,%%d0 ; \
189: 1: movb %%a0@,%%a1@+ ; \
190: subql #1,%%d0 ; \
191: jne 1b" : \
192: : \
193: "r" ((h) + (o)), "g" (a), "g" (c) : \
194: "%a0","%a1","%d0"); \
195: } while (0)
196:
197: #define bus_space_read_multi_2(t, h, o, a, c) do { \
198: (void) t; \
1.6 perry 199: __asm volatile (" \
1.1 tsutsui 200: movl %0,%%a0 ; \
201: movl %1,%%a1 ; \
202: movl %2,%%d0 ; \
203: 1: movw %%a0@,%%a1@+ ; \
204: subql #1,%%d0 ; \
205: jne 1b" : \
206: : \
207: "r" ((h) + (o)), "g" (a), "g" (c) : \
208: "%a0","%a1","%d0"); \
209: } while (0)
210:
211: #define bus_space_read_multi_4(t, h, o, a, c) do { \
212: (void) t; \
1.6 perry 213: __asm volatile (" \
1.1 tsutsui 214: movl %0,%%a0 ; \
215: movl %1,%%a1 ; \
216: movl %2,%%d0 ; \
217: 1: movl %%a0@,%%a1@+ ; \
218: subql #1,%%d0 ; \
219: jne 1b" : \
220: : \
221: "r" ((h) + (o)), "g" (a), "g" (c) : \
222: "%a0","%a1","%d0"); \
223: } while (0)
224:
225: #if 0 /* Cause a link error for bus_space_read_multi_8 */
226: #define bus_space_read_multi_8 !!! bus_space_read_multi_8 unimplemented !!!
227: #endif
228:
229: /*
1.2 tsutsui 230: * void bus_space_read_region_N(bus_space_tag_t tag,
1.1 tsutsui 231: * bus_space_handle_t bsh, bus_size_t offset,
1.4 tsutsui 232: * uintN_t *addr, size_t count);
1.1 tsutsui 233: *
234: * Read `count' 1, 2, 4, or 8 byte quantities from bus space
235: * described by tag/handle and starting at `offset' and copy into
236: * buffer provided.
237: */
238:
239: #define bus_space_read_region_1(t, h, o, a, c) do { \
240: (void) t; \
1.6 perry 241: __asm volatile (" \
1.1 tsutsui 242: movl %0,%%a0 ; \
243: movl %1,%%a1 ; \
244: movl %2,%%d0 ; \
245: 1: movb %%a0@+,%%a1@+ ; \
246: subql #1,%%d0 ; \
247: jne 1b" : \
248: : \
249: "r" ((h) + (o)), "g" (a), "g" (c) : \
250: "%a0","%a1","%d0"); \
251: } while (0)
252:
253: #define bus_space_read_region_2(t, h, o, a, c) do { \
254: (void) t; \
1.6 perry 255: __asm volatile (" \
1.1 tsutsui 256: movl %0,%%a0 ; \
257: movl %1,%%a1 ; \
258: movl %2,%%d0 ; \
259: 1: movw %%a0@+,%%a1@+ ; \
260: subql #1,%%d0 ; \
261: jne 1b" : \
262: : \
263: "r" ((h) + (o)), "g" (a), "g" (c) : \
264: "%a0","%a1","%d0"); \
265: } while (0)
266:
267: #define bus_space_read_region_4(t, h, o, a, c) do { \
268: (void) t; \
1.6 perry 269: __asm volatile (" \
1.1 tsutsui 270: movl %0,%%a0 ; \
271: movl %1,%%a1 ; \
272: movl %2,%%d0 ; \
273: 1: movl %%a0@+,%%a1@+ ; \
274: subql #1,%%d0 ; \
275: jne 1b" : \
276: : \
277: "r" ((h) + (o)), "g" (a), "g" (c) : \
278: "%a0","%a1","%d0"); \
279: } while (0)
280:
281: #if 0 /* Cause a link error for bus_space_read_region_8 */
282: #define bus_space_read_region_8 !!! bus_space_read_region_8 unimplemented !!!
283: #endif
284:
285: /*
1.2 tsutsui 286: * void bus_space_write_N(bus_space_tag_t tag,
1.1 tsutsui 287: * bus_space_handle_t bsh, bus_size_t offset,
1.4 tsutsui 288: * uintN_t value);
1.1 tsutsui 289: *
290: * Write the 1, 2, 4, or 8 byte value `value' to bus space
291: * described by tag/handle/offset.
292: */
293:
294: #define bus_space_write_1(t, h, o, v) \
1.4 tsutsui 295: ((void) t, ((void)(*(volatile uint8_t *)((h) + (o)) = (v))))
1.1 tsutsui 296:
297: #define bus_space_write_2(t, h, o, v) \
1.4 tsutsui 298: ((void) t, ((void)(*(volatile uint16_t *)((h) + (o)) = (v))))
1.1 tsutsui 299:
300: #define bus_space_write_4(t, h, o, v) \
1.4 tsutsui 301: ((void) t, ((void)(*(volatile uint32_t *)((h) + (o)) = (v))))
1.1 tsutsui 302:
303: #if 0 /* Cause a link error for bus_space_write_8 */
304: #define bus_space_write_8 !!! bus_space_write_8 not implemented !!!
305: #endif
306:
307: /*
1.2 tsutsui 308: * void bus_space_write_multi_N(bus_space_tag_t tag,
1.1 tsutsui 309: * bus_space_handle_t bsh, bus_size_t offset,
1.4 tsutsui 310: * const uintN_t *addr, size_t count);
1.1 tsutsui 311: *
312: * Write `count' 1, 2, 4, or 8 byte quantities from the buffer
313: * provided to bus space described by tag/handle/offset.
314: */
315:
316: #define bus_space_write_multi_1(t, h, o, a, c) do { \
317: (void) t; \
1.6 perry 318: __asm volatile (" \
1.1 tsutsui 319: movl %0,%%a0 ; \
320: movl %1,%%a1 ; \
321: movl %2,%%d0 ; \
322: 1: movb %%a1@+,%%a0@ ; \
323: subql #1,%%d0 ; \
324: jne 1b" : \
325: : \
326: "r" ((h) + (o)), "g" (a), "g" (c) : \
327: "%a0","%a1","%d0"); \
328: } while (0)
329:
330: #define bus_space_write_multi_2(t, h, o, a, c) do { \
331: (void) t; \
1.6 perry 332: __asm volatile (" \
1.1 tsutsui 333: movl %0,%%a0 ; \
334: movl %1,%%a1 ; \
335: movl %2,%%d0 ; \
336: 1: movw %%a1@+,%%a0@ ; \
337: subql #1,%%d0 ; \
338: jne 1b" : \
339: : \
340: "r" ((h) + (o)), "g" (a), "g" (c) : \
341: "%a0","%a1","%d0"); \
342: } while (0)
343:
344: #define bus_space_write_multi_4(t, h, o, a, c) do { \
345: (void) t; \
1.6 perry 346: __asm volatile (" \
1.1 tsutsui 347: movl %0,%%a0 ; \
348: movl %1,%%a1 ; \
349: movl %2,%%d0 ; \
350: 1: movl %%a1@+,%%a0@ ; \
351: subql #1,%%d0 ; \
352: jne 1b" : \
353: : \
354: "r" ((h) + (o)), "g" (a), "g" (c) : \
355: "%a0","%a1","%d0"); \
356: } while (0)
357:
358: #if 0 /* Cause a link error for bus_space_write_8 */
359: #define bus_space_write_multi_8(t, h, o, a, c) \
360: !!! bus_space_write_multi_8 unimplimented !!!
361: #endif
362:
363: /*
1.2 tsutsui 364: * void bus_space_write_region_N(bus_space_tag_t tag,
1.1 tsutsui 365: * bus_space_handle_t bsh, bus_size_t offset,
1.4 tsutsui 366: * const uintN_t *addr, size_t count);
1.1 tsutsui 367: *
368: * Write `count' 1, 2, 4, or 8 byte quantities from the buffer provided
369: * to bus space described by tag/handle starting at `offset'.
370: */
371:
372: #define bus_space_write_region_1(t, h, o, a, c) do { \
373: (void) t; \
1.6 perry 374: __asm volatile (" \
1.1 tsutsui 375: movl %0,%%a0 ; \
376: movl %1,%%a1 ; \
377: movl %2,%%d0 ; \
378: 1: movb %%a1@+,%%a0@+ ; \
379: subql #1,%%d0 ; \
380: jne 1b" : \
381: : \
382: "r" ((h) + (o)), "g" (a), "g" (c) : \
383: "%a0","%a1","%d0"); \
384: } while (0)
385:
386: #define bus_space_write_region_2(t, h, o, a, c) do { \
387: (void) t; \
1.6 perry 388: __asm volatile (" \
1.1 tsutsui 389: movl %0,%%a0 ; \
390: movl %1,%%a1 ; \
391: movl %2,%%d0 ; \
392: 1: movw %%a1@+,%%a0@+ ; \
393: subql #1,%%d0 ; \
394: jne 1b" : \
395: : \
396: "r" ((h) + (o)), "g" (a), "g" (c) : \
397: "%a0","%a1","%d0"); \
398: } while (0)
399:
400: #define bus_space_write_region_4(t, h, o, a, c) do { \
401: (void) t; \
1.6 perry 402: __asm volatile (" \
1.1 tsutsui 403: movl %0,%%a0 ; \
404: movl %1,%%a1 ; \
405: movl %2,%%d0 ; \
406: 1: movl %%a1@+,%%a0@+ ; \
407: subql #1,%%d0 ; \
408: jne 1b" : \
409: : \
410: "r" ((h) + (o)), "g" (a), "g" (c) : \
411: "%a0","%a1","%d0"); \
412: } while (0)
413:
414: #if 0 /* Cause a link error for bus_space_write_region_8 */
415: #define bus_space_write_region_8 \
416: !!! bus_space_write_region_8 unimplemented !!!
417: #endif
418:
419: /*
1.2 tsutsui 420: * void bus_space_set_multi_N(bus_space_tag_t tag,
1.4 tsutsui 421: * bus_space_handle_t bsh, bus_size_t offset, uintN_t val,
1.2 tsutsui 422: * size_t count);
1.1 tsutsui 423: *
424: * Write the 1, 2, 4, or 8 byte value `val' to bus space described
425: * by tag/handle/offset `count' times.
426: */
427:
428: #define bus_space_set_multi_1(t, h, o, val, c) do { \
429: (void) t; \
1.6 perry 430: __asm volatile (" \
1.1 tsutsui 431: movl %0,%%a0 ; \
432: movl %1,%%d1 ; \
433: movl %2,%%d0 ; \
434: 1: movb %%d1,%%a0@ ; \
435: subql #1,%%d0 ; \
436: jne 1b" : \
437: : \
438: "r" ((h) + (o)), "g" (val), "g" (c) : \
439: "%a0","%d0","%d1"); \
440: } while (0)
441:
442: #define bus_space_set_multi_2(t, h, o, val, c) do { \
443: (void) t; \
1.6 perry 444: __asm volatile (" \
1.1 tsutsui 445: movl %0,%%a0 ; \
446: movl %1,%%d1 ; \
447: movl %2,%%d0 ; \
448: 1: movw %%d1,%%a0@ ; \
449: subql #1,%%d0 ; \
450: jne 1b" : \
451: : \
452: "r" ((h) + (o)), "g" (val), "g" (c) : \
453: "%a0","%d0","%d1"); \
454: } while (0)
455:
456: #define bus_space_set_multi_4(t, h, o, val, c) do { \
457: (void) t; \
1.6 perry 458: __asm volatile (" \
1.1 tsutsui 459: movl %0,%%a0 ; \
460: movl %1,%%d1 ; \
461: movl %2,%%d0 ; \
462: 1: movl %%d1,%%a0@ ; \
463: subql #1,%%d0 ; \
464: jne 1b" : \
465: : \
466: "r" ((h) + (o)), "g" (val), "g" (c) : \
467: "%a0","%d0","%d1"); \
468: } while (0)
469:
470: #if 0 /* Cause a link error for bus_space_set_multi_8 */
471: #define bus_space_set_multi_8 \
472: !!! bus_space_set_multi_8 unimplemented !!!
473: #endif
474:
475: /*
1.2 tsutsui 476: * void bus_space_set_region_N(bus_space_tag_t tag,
1.4 tsutsui 477: * bus_space_handle_t bsh, bus_size_t offset, uintN_t val,
1.2 tsutsui 478: * size_t count);
1.1 tsutsui 479: *
480: * Write `count' 1, 2, 4, or 8 byte value `val' to bus space described
481: * by tag/handle starting at `offset'.
482: */
483:
484: #define bus_space_set_region_1(t, h, o, val, c) do { \
485: (void) t; \
1.6 perry 486: __asm volatile (" \
1.1 tsutsui 487: movl %0,%%a0 ; \
488: movl %1,%%d1 ; \
489: movl %2,%%d0 ; \
490: 1: movb %%d1,%%a0@+ ; \
491: subql #1,%%d0 ; \
492: jne 1b" : \
493: : \
494: "r" ((h) + (o)), "g" (val), "g" (c) : \
495: "%a0","%d0","%d1"); \
496: } while (0)
497:
498: #define bus_space_set_region_2(t, h, o, val, c) do { \
499: (void) t; \
1.6 perry 500: __asm volatile (" \
1.1 tsutsui 501: movl %0,%%a0 ; \
502: movl %1,%%d1 ; \
503: movl %2,%%d0 ; \
504: 1: movw %%d1,%%a0@+ ; \
505: subql #1,%%d0 ; \
506: jne 1b" : \
507: : \
508: "r" ((h) + (o)), "g" (val), "g" (c) : \
509: "%a0","%d0","%d1"); \
510: } while (0)
511:
512: #define bus_space_set_region_4(t, h, o, val, c) do { \
513: (void) t; \
1.6 perry 514: __asm volatile (" \
1.1 tsutsui 515: movl %0,%%a0 ; \
516: movl %1,%%d1 ; \
517: movl %2,%%d0 ; \
518: 1: movl %%d1,%%a0@+ ; \
519: subql #1,%%d0 ; \
520: jne 1b" : \
521: : \
522: "r" ((h) + (o)), "g" (val), "g" (c) : \
523: "%a0","%d0","%d1"); \
524: } while (0)
525:
526: #if 0 /* Cause a link error for bus_space_set_region_8 */
527: #define bus_space_set_region_8 \
528: !!! bus_space_set_region_8 unimplemented !!!
529: #endif
530:
531: /*
1.2 tsutsui 532: * void bus_space_copy_region_N(bus_space_tag_t tag,
1.1 tsutsui 533: * bus_space_handle_t bsh1, bus_size_t off1,
534: * bus_space_handle_t bsh2, bus_size_t off2,
1.2 tsutsui 535: * bus_size_t count);
1.1 tsutsui 536: *
537: * Copy `count' 1, 2, 4, or 8 byte values from bus space starting
538: * at tag/bsh1/off1 to bus space starting at tag/bsh2/off2.
539: */
540:
541: #define __NEWS68K_copy_region_N(BYTES) \
1.7 perry 542: static __inline void __CONCAT(bus_space_copy_region_,BYTES) \
1.2 tsutsui 543: (bus_space_tag_t, \
544: bus_space_handle_t bsh1, bus_size_t off1, \
545: bus_space_handle_t bsh2, bus_size_t off2, \
546: bus_size_t count); \
1.1 tsutsui 547: \
1.7 perry 548: static __inline void \
1.3 tsutsui 549: __CONCAT(bus_space_copy_region_,BYTES)(bus_space_tag_t t, \
550: bus_space_handle_t h1, bus_space_handle_t h2, \
551: bus_size_t o1, bus_size_t o2, bus_size_t c) \
1.1 tsutsui 552: { \
553: bus_size_t o; \
554: \
555: if ((h1 + o1) >= (h2 + o2)) { \
556: /* src after dest: copy forward */ \
557: for (o = 0; c != 0; c--, o += BYTES) \
558: __CONCAT(bus_space_write_,BYTES)(t, h2, o2 + o, \
559: __CONCAT(bus_space_read_,BYTES)(t, h1, o1 + o)); \
560: } else { \
561: /* dest after src: copy backwards */ \
562: for (o = (c - 1) * BYTES; c != 0; c--, o -= BYTES) \
563: __CONCAT(bus_space_write_,BYTES)(t, h2, o2 + o, \
564: __CONCAT(bus_space_read_,BYTES)(t, h1, o1 + o)); \
565: } \
566: }
567: __NEWS68K_copy_region_N(1)
568: __NEWS68K_copy_region_N(2)
569: __NEWS68K_copy_region_N(4)
570: #if 0 /* Cause a link error for bus_space_copy_region_8 */
571: #define bus_space_copy_region_8 \
572: !!! bus_space_copy_region_8 unimplemented !!!
573: #endif
574:
575: #undef __NEWS68K_copy_region_N
576:
577: /*
578: * Bus read/write barrier methods.
579: *
1.2 tsutsui 580: * void bus_space_barrier(bus_space_tag_t tag,
1.1 tsutsui 581: * bus_space_handle_t bsh, bus_size_t offset,
1.2 tsutsui 582: * bus_size_t len, int flags);
1.1 tsutsui 583: *
584: * Note: the 680x0 does not currently require barriers, but we must
585: * provide the flags to MI code.
586: */
587: #define bus_space_barrier(t, h, o, l, f) \
588: ((void)((void)(t), (void)(h), (void)(o), (void)(l), (void)(f)))
589: #define BUS_SPACE_BARRIER_READ 0x01 /* force read barrier */
590: #define BUS_SPACE_BARRIER_WRITE 0x02 /* force write barrier */
591:
592: #define BUS_SPACE_ALIGNED_POINTER(p, t) ALIGNED_POINTER(p, t)
593:
594: #endif /* _NEWS68K_BUS_H_ */