1 /* $NetBSD: bus.h,v 1.12 1997/10/01 08:25:15 fvdl Exp $ */
3 * $Id: bus.h,v 1.6 2007/08/09 11:23:32 katta Exp $
5 * Copyright (c) 1996, 1997 The NetBSD Foundation, Inc.
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.
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
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.
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.
42 * Copyright (c) 1996 Charles M. Hannum. All rights reserved.
43 * Copyright (c) 1996 Christopher G. Demetriou. All rights reserved.
45 * Redistribution and use in source and binary forms, with or without
46 * modification, are permitted provided that the following conditions
48 * 1. Redistributions of source code must retain the above copyright
49 * notice, this list of conditions and the following disclaimer.
50 * 2. Redistributions in binary form must reproduce the above copyright
51 * notice, this list of conditions and the following disclaimer in the
52 * documentation and/or other materials provided with the distribution.
53 * 3. All advertising materials mentioning features or use of this software
54 * must display the following acknowledgement:
55 * This product includes software developed by Christopher G. Demetriou
56 * for the NetBSD Project.
57 * 4. The name of the author may not be used to endorse or promote products
58 * derived from this software without specific prior written permission
60 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
61 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
62 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
63 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
64 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
65 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
66 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
67 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
68 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
69 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
71 * from: src/sys/alpha/include/bus.h,v 1.5 1999/08/28 00:38:40 peter
74 #include <sys/cdefs.h>
75 __FBSDID("$FreeBSD$");
77 #include <sys/param.h>
78 #include <sys/systm.h>
80 #include <sys/kernel.h>
81 #include <sys/malloc.h>
86 #include <vm/vm_kern.h>
87 #include <vm/vm_extern.h>
89 #include <machine/bus.h>
90 #include <machine/cache.h>
92 static struct bus_space generic_space = {
96 /* mapping/unmapping */
101 /* allocation/deallocation */
162 /* read (single) stream */
168 /* read multiple stream */
174 /* read region stream */
180 /* write (single) stream */
186 /* write multiple stream */
192 /* write region stream */
199 /* Ultra-gross kludge */
200 #include "opt_cputype.h"
201 #if defined(CPU_CNMIPS) && (defined(__mips_n32) || defined(__mips_o32))
202 #include <contrib/octeon-sdk/cvmx.h>
203 #define rd8(a) cvmx_read64_uint8(a)
204 #define rd16(a) cvmx_read64_uint16(a)
205 #define rd32(a) cvmx_read64_uint32(a)
206 #define wr8(a, v) cvmx_write64_uint8(a, v)
207 #define wr16(a, v) cvmx_write64_uint16(a, v)
208 #define wr32(a, v) cvmx_write64_uint32(a, v)
209 #elif defined(CPU_SB1) && _BYTE_ORDER == _BIG_ENDIAN
210 #include <mips/sibyte/sb_bus_space.h>
211 #define rd8(a) sb_big_endian_read8(a)
212 #define rd16(a) sb_big_endian_read16(a)
213 #define rd32(a) sb_big_endian_read32(a)
214 #define wr8(a, v) sb_big_endian_write8(a, v)
215 #define wr16(a, v) sb_big_endian_write16(a, v)
216 #define wr32(a, v) sb_big_endian_write32(a, v)
218 #define rd8(a) readb(a)
219 #define rd16(a) readw(a)
220 #define rd32(a) readl(a)
221 #define wr8(a, v) writeb(a, v)
222 #define wr16(a, v) writew(a, v)
223 #define wr32(a, v) writel(a, v)
226 /* generic bus_space tag */
227 bus_space_tag_t mips_bus_space_generic = &generic_space;
230 generic_bs_map(void *t __unused, bus_addr_t addr,
231 bus_size_t size __unused, int flags __unused,
232 bus_space_handle_t *bshp)
240 generic_bs_unmap(void *t __unused, bus_space_handle_t bh __unused,
241 bus_size_t size __unused)
248 generic_bs_subregion(void *t __unused, bus_space_handle_t handle __unused,
249 bus_size_t offset __unused, bus_size_t size __unused,
250 bus_space_handle_t *nhandle __unused)
253 printf("SUBREGION?!?!?!\n");
259 generic_bs_r_1(void *t, bus_space_handle_t handle,
263 return (rd8(handle + offset));
267 generic_bs_r_2(void *t, bus_space_handle_t handle,
271 return (rd16(handle + offset));
275 generic_bs_r_4(void *t, bus_space_handle_t handle,
279 return (rd32(handle + offset));
284 generic_bs_rm_1(void *t, bus_space_handle_t bsh,
285 bus_size_t offset, uint8_t *addr, size_t count)
289 *addr++ = rd8(bsh + offset);
293 generic_bs_rm_2(void *t, bus_space_handle_t bsh,
294 bus_size_t offset, uint16_t *addr, size_t count)
296 bus_addr_t baddr = bsh + offset;
299 *addr++ = rd16(baddr);
303 generic_bs_rm_4(void *t, bus_space_handle_t bsh,
304 bus_size_t offset, uint32_t *addr, size_t count)
306 bus_addr_t baddr = bsh + offset;
309 *addr++ = rd32(baddr);
314 * Read `count' 1, 2, 4, or 8 byte quantities from bus space
315 * described by tag/handle and starting at `offset' and copy into
319 generic_bs_rr_1(void *t, bus_space_handle_t bsh,
320 bus_size_t offset, uint8_t *addr, size_t count)
322 bus_addr_t baddr = bsh + offset;
325 *addr++ = rd8(baddr);
331 generic_bs_rr_2(void *t, bus_space_handle_t bsh,
332 bus_size_t offset, uint16_t *addr, size_t count)
334 bus_addr_t baddr = bsh + offset;
337 *addr++ = rd16(baddr);
343 generic_bs_rr_4(void *t, bus_space_handle_t bsh,
344 bus_size_t offset, uint32_t *addr, size_t count)
346 bus_addr_t baddr = bsh + offset;
349 *addr++ = rd32(baddr);
355 * Write the 1, 2, 4, or 8 byte value `value' to bus space
356 * described by tag/handle/offset.
359 generic_bs_w_1(void *t, bus_space_handle_t bsh,
360 bus_size_t offset, uint8_t value)
363 wr8(bsh + offset, value);
367 generic_bs_w_2(void *t, bus_space_handle_t bsh,
368 bus_size_t offset, uint16_t value)
371 wr16(bsh + offset, value);
375 generic_bs_w_4(void *t, bus_space_handle_t bsh,
376 bus_size_t offset, uint32_t value)
379 wr32(bsh + offset, value);
383 * Write `count' 1, 2, 4, or 8 byte quantities from the buffer
384 * provided to bus space described by tag/handle/offset.
387 generic_bs_wm_1(void *t, bus_space_handle_t bsh,
388 bus_size_t offset, const uint8_t *addr, size_t count)
390 bus_addr_t baddr = bsh + offset;
397 generic_bs_wm_2(void *t, bus_space_handle_t bsh,
398 bus_size_t offset, const uint16_t *addr, size_t count)
400 bus_addr_t baddr = bsh + offset;
403 wr16(baddr, *addr++);
407 generic_bs_wm_4(void *t, bus_space_handle_t bsh,
408 bus_size_t offset, const uint32_t *addr, size_t count)
410 bus_addr_t baddr = bsh + offset;
413 wr32(baddr, *addr++);
417 * Write `count' 1, 2, 4, or 8 byte quantities from the buffer provided
418 * to bus space described by tag/handle starting at `offset'.
421 generic_bs_wr_1(void *t, bus_space_handle_t bsh,
422 bus_size_t offset, const uint8_t *addr, size_t count)
424 bus_addr_t baddr = bsh + offset;
433 generic_bs_wr_2(void *t, bus_space_handle_t bsh,
434 bus_size_t offset, const uint16_t *addr, size_t count)
436 bus_addr_t baddr = bsh + offset;
439 wr16(baddr, *addr++);
445 generic_bs_wr_4(void *t, bus_space_handle_t bsh,
446 bus_size_t offset, const uint32_t *addr, size_t count)
448 bus_addr_t baddr = bsh + offset;
451 wr32(baddr, *addr++);
457 * Write the 1, 2, 4, or 8 byte value `val' to bus space described
458 * by tag/handle/offset `count' times.
461 generic_bs_sm_1(void *t, bus_space_handle_t bsh,
462 bus_size_t offset, uint8_t value, size_t count)
464 bus_addr_t addr = bsh + offset;
471 generic_bs_sm_2(void *t, bus_space_handle_t bsh,
472 bus_size_t offset, uint16_t value, size_t count)
474 bus_addr_t addr = bsh + offset;
481 generic_bs_sm_4(void *t, bus_space_handle_t bsh,
482 bus_size_t offset, uint32_t value, size_t count)
484 bus_addr_t addr = bsh + offset;
491 * Write `count' 1, 2, 4, or 8 byte value `val' to bus space described
492 * by tag/handle starting at `offset'.
495 generic_bs_sr_1(void *t, bus_space_handle_t bsh,
496 bus_size_t offset, uint8_t value, size_t count)
498 bus_addr_t addr = bsh + offset;
500 for (; count != 0; count--, addr++)
505 generic_bs_sr_2(void *t, bus_space_handle_t bsh,
506 bus_size_t offset, uint16_t value, size_t count)
508 bus_addr_t addr = bsh + offset;
510 for (; count != 0; count--, addr += 2)
515 generic_bs_sr_4(void *t, bus_space_handle_t bsh,
516 bus_size_t offset, uint32_t value, size_t count)
518 bus_addr_t addr = bsh + offset;
520 for (; count != 0; count--, addr += 4)
525 * Copy `count' 1, 2, 4, or 8 byte values from bus space starting
526 * at tag/bsh1/off1 to bus space starting at tag/bsh2/off2.
529 generic_bs_c_1(void *t, bus_space_handle_t bsh1,
530 bus_size_t off1, bus_space_handle_t bsh2,
531 bus_size_t off2, size_t count)
533 bus_addr_t addr1 = bsh1 + off1;
534 bus_addr_t addr2 = bsh2 + off2;
536 if (addr1 >= addr2) {
537 /* src after dest: copy forward */
538 for (; count != 0; count--, addr1++, addr2++)
539 wr8(addr2, rd8(addr1));
541 /* dest after src: copy backwards */
542 for (addr1 += (count - 1), addr2 += (count - 1);
543 count != 0; count--, addr1--, addr2--)
544 wr8(addr2, rd8(addr1));
549 generic_bs_c_2(void *t, bus_space_handle_t bsh1,
550 bus_size_t off1, bus_space_handle_t bsh2,
551 bus_size_t off2, size_t count)
553 bus_addr_t addr1 = bsh1 + off1;
554 bus_addr_t addr2 = bsh2 + off2;
556 if (addr1 >= addr2) {
557 /* src after dest: copy forward */
558 for (; count != 0; count--, addr1 += 2, addr2 += 2)
559 wr16(addr2, rd16(addr1));
561 /* dest after src: copy backwards */
562 for (addr1 += 2 * (count - 1), addr2 += 2 * (count - 1);
563 count != 0; count--, addr1 -= 2, addr2 -= 2)
564 wr16(addr2, rd16(addr1));
569 generic_bs_c_4(void *t, bus_space_handle_t bsh1,
570 bus_size_t off1, bus_space_handle_t bsh2,
571 bus_size_t off2, size_t count)
573 bus_addr_t addr1 = bsh1 + off1;
574 bus_addr_t addr2 = bsh2 + off2;
576 if (addr1 >= addr2) {
577 /* src after dest: copy forward */
578 for (; count != 0; count--, addr1 += 4, addr2 += 4)
579 wr32(addr2, rd32(addr1));
581 /* dest after src: copy backwards */
582 for (addr1 += 4 * (count - 1), addr2 += 4 * (count - 1);
583 count != 0; count--, addr1 -= 4, addr2 -= 4)
584 wr32(addr2, rd32(addr1));
589 generic_bs_barrier(void *t __unused,
590 bus_space_handle_t bsh __unused,
591 bus_size_t offset __unused, bus_size_t len __unused,
595 if (flags & BUS_SPACE_BARRIER_WRITE)
596 mips_dcache_wbinv_all();