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 = {
94 .bs_cookie = (void *) 0,
96 /* mapping/unmapping */
97 .bs_map = generic_bs_map,
98 .bs_unmap = generic_bs_unmap,
99 .bs_subregion = generic_bs_subregion,
101 /* allocation/deallocation */
102 .bs_alloc = generic_bs_alloc,
103 .bs_free = generic_bs_free,
106 .bs_barrier = generic_bs_barrier,
109 .bs_r_1 = generic_bs_r_1,
110 .bs_r_2 = generic_bs_r_2,
111 .bs_r_4 = generic_bs_r_4,
112 .bs_r_8 = generic_bs_r_8,
115 .bs_rm_1 = generic_bs_rm_1,
116 .bs_rm_2 = generic_bs_rm_2,
117 .bs_rm_4 = generic_bs_rm_4,
118 .bs_rm_8 = generic_bs_rm_8,
121 .bs_rr_1 = generic_bs_rr_1,
122 .bs_rr_2 = generic_bs_rr_2,
123 .bs_rr_4 = generic_bs_rr_4,
124 .bs_rr_8 = generic_bs_rr_8,
127 .bs_w_1 = generic_bs_w_1,
128 .bs_w_2 = generic_bs_w_2,
129 .bs_w_4 = generic_bs_w_4,
130 .bs_w_8 = generic_bs_w_8,
133 .bs_wm_1 = generic_bs_wm_1,
134 .bs_wm_2 = generic_bs_wm_2,
135 .bs_wm_4 = generic_bs_wm_4,
136 .bs_wm_8 = generic_bs_wm_8,
139 .bs_wr_1 = generic_bs_wr_1,
140 .bs_wr_2 = generic_bs_wr_2,
141 .bs_wr_4 = generic_bs_wr_4,
142 .bs_wr_8 = generic_bs_wr_8,
145 .bs_sm_1 = generic_bs_sm_1,
146 .bs_sm_2 = generic_bs_sm_2,
147 .bs_sm_4 = generic_bs_sm_4,
148 .bs_sm_8 = generic_bs_sm_8,
151 .bs_sr_1 = generic_bs_sr_1,
152 .bs_sr_2 = generic_bs_sr_2,
153 .bs_sr_4 = generic_bs_sr_4,
154 .bs_sr_8 = generic_bs_sr_8,
157 .bs_c_1 = generic_bs_c_1,
158 .bs_c_2 = generic_bs_c_2,
159 .bs_c_4 = generic_bs_c_4,
160 .bs_c_8 = generic_bs_c_8,
162 /* read (single) stream */
163 .bs_r_1_s = generic_bs_r_1,
164 .bs_r_2_s = generic_bs_r_2,
165 .bs_r_4_s = generic_bs_r_4,
166 .bs_r_8_s = generic_bs_r_8,
168 /* read multiple stream */
169 .bs_rm_1_s = generic_bs_rm_1,
170 .bs_rm_2_s = generic_bs_rm_2,
171 .bs_rm_4_s = generic_bs_rm_4,
172 .bs_rm_8_s = generic_bs_rm_8,
174 /* read region stream */
175 .bs_rr_1_s = generic_bs_rr_1,
176 .bs_rr_2_s = generic_bs_rr_2,
177 .bs_rr_4_s = generic_bs_rr_4,
178 .bs_rr_8_s = generic_bs_rr_8,
180 /* write (single) stream */
181 .bs_w_1_s = generic_bs_w_1,
182 .bs_w_2_s = generic_bs_w_2,
183 .bs_w_4_s = generic_bs_w_4,
184 .bs_w_8_s = generic_bs_w_8,
186 /* write multiple stream */
187 .bs_wm_1_s = generic_bs_wm_1,
188 .bs_wm_2_s = generic_bs_wm_2,
189 .bs_wm_4_s = generic_bs_wm_4,
190 .bs_wm_8_s = generic_bs_wm_8,
192 /* write region stream */
193 .bs_wr_1_s = generic_bs_wr_1,
194 .bs_wr_2_s = generic_bs_wr_2,
195 .bs_wr_4_s = generic_bs_wr_4,
196 .bs_wr_8_s = generic_bs_wr_8,
199 /* Ultra-gross kludge */
200 #if defined(CPU_CNMIPS) && (defined(__mips_n32) || defined(__mips_o32))
201 #include <contrib/octeon-sdk/cvmx.h>
202 #define rd8(a) cvmx_read64_uint8(a)
203 #define rd16(a) cvmx_read64_uint16(a)
204 #define rd32(a) cvmx_read64_uint32(a)
205 #define rd64(a) cvmx_read64_uint64(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 #define wr64(a, v) cvmx_write64_uint64(a, v)
210 #elif defined(CPU_SB1) && _BYTE_ORDER == _BIG_ENDIAN
211 #include <mips/sibyte/sb_bus_space.h>
212 #define rd8(a) sb_big_endian_read8(a)
213 #define rd16(a) sb_big_endian_read16(a)
214 #define rd32(a) sb_big_endian_read32(a)
215 #define wr8(a, v) sb_big_endian_write8(a, v)
216 #define wr16(a, v) sb_big_endian_write16(a, v)
217 #define wr32(a, v) sb_big_endian_write32(a, v)
219 #define rd8(a) readb(a)
220 #define rd16(a) readw(a)
221 #define rd32(a) readl(a)
223 #define rd64(a) readq((a))
225 #define wr8(a, v) writeb(a, v)
226 #define wr16(a, v) writew(a, v)
227 #define wr32(a, v) writel(a, v)
229 #define wr64(a, v) writeq(a, v)
233 /* generic bus_space tag */
234 bus_space_tag_t mips_bus_space_generic = &generic_space;
237 generic_bs_map(void *t __unused, bus_addr_t addr,
238 bus_size_t size __unused, int flags __unused,
239 bus_space_handle_t *bshp)
247 generic_bs_unmap(void *t __unused, bus_space_handle_t bh __unused,
248 bus_size_t size __unused)
255 generic_bs_subregion(void *t __unused, bus_space_handle_t handle,
256 bus_size_t offset, bus_size_t size __unused,
257 bus_space_handle_t *bshp)
260 *bshp = handle + offset;
265 generic_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend,
266 bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags,
267 bus_addr_t *bpap, bus_space_handle_t *bshp)
270 panic("%s: not implemented", __func__);
274 generic_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size)
277 panic("%s: not implemented", __func__);
281 generic_bs_r_1(void *t, bus_space_handle_t handle,
285 return (rd8(handle + offset));
289 generic_bs_r_2(void *t, bus_space_handle_t handle,
293 return (rd16(handle + offset));
297 generic_bs_r_4(void *t, bus_space_handle_t handle,
301 return (rd32(handle + offset));
305 generic_bs_r_8(void *t, bus_space_handle_t handle, bus_size_t offset)
309 return(rd64(handle + offset));
311 panic("%s: not implemented", __func__);
316 generic_bs_rm_1(void *t, bus_space_handle_t bsh,
317 bus_size_t offset, uint8_t *addr, size_t count)
321 *addr++ = rd8(bsh + offset);
325 generic_bs_rm_2(void *t, bus_space_handle_t bsh,
326 bus_size_t offset, uint16_t *addr, size_t count)
328 bus_addr_t baddr = bsh + offset;
331 *addr++ = rd16(baddr);
335 generic_bs_rm_4(void *t, bus_space_handle_t bsh,
336 bus_size_t offset, uint32_t *addr, size_t count)
338 bus_addr_t baddr = bsh + offset;
341 *addr++ = rd32(baddr);
345 generic_bs_rm_8(void *t, bus_space_handle_t bsh, bus_size_t offset,
346 uint64_t *addr, size_t count)
349 bus_addr_t baddr = bsh + offset;
352 *addr++ = rd64(baddr);
354 panic("%s: not implemented", __func__);
359 * Read `count' 1, 2, 4, or 8 byte quantities from bus space
360 * described by tag/handle and starting at `offset' and copy into
364 generic_bs_rr_1(void *t, bus_space_handle_t bsh,
365 bus_size_t offset, uint8_t *addr, size_t count)
367 bus_addr_t baddr = bsh + offset;
370 *addr++ = rd8(baddr);
376 generic_bs_rr_2(void *t, bus_space_handle_t bsh,
377 bus_size_t offset, uint16_t *addr, size_t count)
379 bus_addr_t baddr = bsh + offset;
382 *addr++ = rd16(baddr);
388 generic_bs_rr_4(void *t, bus_space_handle_t bsh,
389 bus_size_t offset, uint32_t *addr, size_t count)
391 bus_addr_t baddr = bsh + offset;
394 *addr++ = rd32(baddr);
400 generic_bs_rr_8(void *t, bus_space_handle_t bsh, bus_size_t offset,
401 uint64_t *addr, size_t count)
404 bus_addr_t baddr = bsh + offset;
407 *addr++ = rd64(baddr);
411 panic("%s: not implemented", __func__);
416 * Write the 1, 2, 4, or 8 byte value `value' to bus space
417 * described by tag/handle/offset.
420 generic_bs_w_1(void *t, bus_space_handle_t bsh,
421 bus_size_t offset, uint8_t value)
424 wr8(bsh + offset, value);
428 generic_bs_w_2(void *t, bus_space_handle_t bsh,
429 bus_size_t offset, uint16_t value)
432 wr16(bsh + offset, value);
436 generic_bs_w_4(void *t, bus_space_handle_t bsh,
437 bus_size_t offset, uint32_t value)
440 wr32(bsh + offset, value);
444 generic_bs_w_8(void *t, bus_space_handle_t bsh, bus_size_t offset,
449 wr64(bsh + offset, value);
451 panic("%s: not implemented", __func__);
456 * Write `count' 1, 2, 4, or 8 byte quantities from the buffer
457 * provided to bus space described by tag/handle/offset.
460 generic_bs_wm_1(void *t, bus_space_handle_t bsh,
461 bus_size_t offset, const uint8_t *addr, size_t count)
463 bus_addr_t baddr = bsh + offset;
470 generic_bs_wm_2(void *t, bus_space_handle_t bsh,
471 bus_size_t offset, const uint16_t *addr, size_t count)
473 bus_addr_t baddr = bsh + offset;
476 wr16(baddr, *addr++);
480 generic_bs_wm_4(void *t, bus_space_handle_t bsh,
481 bus_size_t offset, const uint32_t *addr, size_t count)
483 bus_addr_t baddr = bsh + offset;
486 wr32(baddr, *addr++);
490 generic_bs_wm_8(void *t, bus_space_handle_t bsh, bus_size_t offset,
491 const uint64_t *addr, size_t count)
494 bus_addr_t baddr = bsh + offset;
497 wr64(baddr, *addr++);
499 panic("%s: not implemented", __func__);
504 * Write `count' 1, 2, 4, or 8 byte quantities from the buffer provided
505 * to bus space described by tag/handle starting at `offset'.
508 generic_bs_wr_1(void *t, bus_space_handle_t bsh,
509 bus_size_t offset, const uint8_t *addr, size_t count)
511 bus_addr_t baddr = bsh + offset;
520 generic_bs_wr_2(void *t, bus_space_handle_t bsh,
521 bus_size_t offset, const uint16_t *addr, size_t count)
523 bus_addr_t baddr = bsh + offset;
526 wr16(baddr, *addr++);
532 generic_bs_wr_4(void *t, bus_space_handle_t bsh,
533 bus_size_t offset, const uint32_t *addr, size_t count)
535 bus_addr_t baddr = bsh + offset;
538 wr32(baddr, *addr++);
544 generic_bs_wr_8(void *t, bus_space_handle_t bsh, bus_size_t offset,
545 const uint64_t *addr, size_t count)
548 bus_addr_t baddr = bsh + offset;
551 wr64(baddr, *addr++);
555 panic("%s: not implemented", __func__);
560 * Write the 1, 2, 4, or 8 byte value `val' to bus space described
561 * by tag/handle/offset `count' times.
564 generic_bs_sm_1(void *t, bus_space_handle_t bsh,
565 bus_size_t offset, uint8_t value, size_t count)
567 bus_addr_t addr = bsh + offset;
574 generic_bs_sm_2(void *t, bus_space_handle_t bsh,
575 bus_size_t offset, uint16_t value, size_t count)
577 bus_addr_t addr = bsh + offset;
584 generic_bs_sm_4(void *t, bus_space_handle_t bsh,
585 bus_size_t offset, uint32_t value, size_t count)
587 bus_addr_t addr = bsh + offset;
594 generic_bs_sm_8(void *t, bus_space_handle_t bsh, bus_size_t offset,
595 uint64_t value, size_t count)
598 bus_addr_t addr = bsh + offset;
603 panic("%s: not implemented", __func__);
608 * Write `count' 1, 2, 4, or 8 byte value `val' to bus space described
609 * by tag/handle starting at `offset'.
612 generic_bs_sr_1(void *t, bus_space_handle_t bsh,
613 bus_size_t offset, uint8_t value, size_t count)
615 bus_addr_t addr = bsh + offset;
617 for (; count != 0; count--, addr++)
622 generic_bs_sr_2(void *t, bus_space_handle_t bsh,
623 bus_size_t offset, uint16_t value, size_t count)
625 bus_addr_t addr = bsh + offset;
627 for (; count != 0; count--, addr += 2)
632 generic_bs_sr_4(void *t, bus_space_handle_t bsh,
633 bus_size_t offset, uint32_t value, size_t count)
635 bus_addr_t addr = bsh + offset;
637 for (; count != 0; count--, addr += 4)
642 generic_bs_sr_8(void *t, bus_space_handle_t bsh, bus_size_t offset,
643 uint64_t value, size_t count)
646 bus_addr_t addr = bsh + offset;
648 for (; count != 0; count--, addr += 8)
651 panic("%s: not implemented", __func__);
656 * Copy `count' 1, 2, 4, or 8 byte values from bus space starting
657 * at tag/bsh1/off1 to bus space starting at tag/bsh2/off2.
660 generic_bs_c_1(void *t, bus_space_handle_t bsh1,
661 bus_size_t off1, bus_space_handle_t bsh2,
662 bus_size_t off2, size_t count)
664 bus_addr_t addr1 = bsh1 + off1;
665 bus_addr_t addr2 = bsh2 + off2;
667 if (addr1 >= addr2) {
668 /* src after dest: copy forward */
669 for (; count != 0; count--, addr1++, addr2++)
670 wr8(addr2, rd8(addr1));
672 /* dest after src: copy backwards */
673 for (addr1 += (count - 1), addr2 += (count - 1);
674 count != 0; count--, addr1--, addr2--)
675 wr8(addr2, rd8(addr1));
680 generic_bs_c_2(void *t, bus_space_handle_t bsh1,
681 bus_size_t off1, bus_space_handle_t bsh2,
682 bus_size_t off2, size_t count)
684 bus_addr_t addr1 = bsh1 + off1;
685 bus_addr_t addr2 = bsh2 + off2;
687 if (addr1 >= addr2) {
688 /* src after dest: copy forward */
689 for (; count != 0; count--, addr1 += 2, addr2 += 2)
690 wr16(addr2, rd16(addr1));
692 /* dest after src: copy backwards */
693 for (addr1 += 2 * (count - 1), addr2 += 2 * (count - 1);
694 count != 0; count--, addr1 -= 2, addr2 -= 2)
695 wr16(addr2, rd16(addr1));
700 generic_bs_c_4(void *t, bus_space_handle_t bsh1,
701 bus_size_t off1, bus_space_handle_t bsh2,
702 bus_size_t off2, size_t count)
704 bus_addr_t addr1 = bsh1 + off1;
705 bus_addr_t addr2 = bsh2 + off2;
707 if (addr1 >= addr2) {
708 /* src after dest: copy forward */
709 for (; count != 0; count--, addr1 += 4, addr2 += 4)
710 wr32(addr2, rd32(addr1));
712 /* dest after src: copy backwards */
713 for (addr1 += 4 * (count - 1), addr2 += 4 * (count - 1);
714 count != 0; count--, addr1 -= 4, addr2 -= 4)
715 wr32(addr2, rd32(addr1));
720 generic_bs_c_8(void *t, bus_space_handle_t bsh1, bus_size_t off1,
721 bus_space_handle_t bsh2, bus_size_t off2, size_t count)
723 #if defined(rd64) && defined(wr64)
724 bus_addr_t addr1 = bsh1 + off1;
725 bus_addr_t addr2 = bsh2 + off2;
727 if (addr1 >= addr2) {
728 /* src after dest: copy forward */
729 for (; count != 0; count--, addr1 += 8, addr2 += 8)
730 wr64(addr2, rd64(addr1));
732 /* dest after src: copy backwards */
733 for (addr1 += 8 * (count - 1), addr2 += 8 * (count - 1);
734 count != 0; count--, addr1 -= 8, addr2 -= 8)
735 wr64(addr2, rd64(addr1));
738 panic("%s: not implemented", __func__);
743 generic_bs_barrier(void *t __unused,
744 bus_space_handle_t bsh __unused,
745 bus_size_t offset __unused, bus_size_t len __unused,
749 if (flags & BUS_SPACE_BARRIER_WRITE)
750 mips_dcache_wbinv_all();
752 if (flags & BUS_SPACE_BARRIER_READ)
754 if (flags & BUS_SPACE_BARRIER_WRITE)