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.
21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
35 * Copyright (c) 1996 Charles M. Hannum. All rights reserved.
36 * Copyright (c) 1996 Christopher G. Demetriou. All rights reserved.
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
41 * 1. Redistributions of source code must retain the above copyright
42 * notice, this list of conditions and the following disclaimer.
43 * 2. Redistributions in binary form must reproduce the above copyright
44 * notice, this list of conditions and the following disclaimer in the
45 * documentation and/or other materials provided with the distribution.
46 * 3. All advertising materials mentioning features or use of this software
47 * must display the following acknowledgement:
48 * This product includes software developed by Christopher G. Demetriou
49 * for the NetBSD Project.
50 * 4. The name of the author may not be used to endorse or promote products
51 * derived from this software without specific prior written permission
53 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
54 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
55 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
56 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
57 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
58 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
59 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
61 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
62 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
64 * from: src/sys/alpha/include/bus.h,v 1.5 1999/08/28 00:38:40 peter
67 #include <sys/cdefs.h>
68 __FBSDID("$FreeBSD$");
70 #include <sys/param.h>
71 #include <sys/systm.h>
73 #include <sys/kernel.h>
74 #include <sys/malloc.h>
79 #include <vm/vm_kern.h>
80 #include <vm/vm_extern.h>
82 #include <machine/bus.h>
83 #include <machine/cache.h>
85 static struct bus_space generic_space = {
87 .bs_cookie = (void *) 0,
89 /* mapping/unmapping */
90 .bs_map = generic_bs_map,
91 .bs_unmap = generic_bs_unmap,
92 .bs_subregion = generic_bs_subregion,
94 /* allocation/deallocation */
95 .bs_alloc = generic_bs_alloc,
96 .bs_free = generic_bs_free,
99 .bs_barrier = generic_bs_barrier,
102 .bs_r_1 = generic_bs_r_1,
103 .bs_r_2 = generic_bs_r_2,
104 .bs_r_4 = generic_bs_r_4,
105 .bs_r_8 = generic_bs_r_8,
108 .bs_rm_1 = generic_bs_rm_1,
109 .bs_rm_2 = generic_bs_rm_2,
110 .bs_rm_4 = generic_bs_rm_4,
111 .bs_rm_8 = generic_bs_rm_8,
114 .bs_rr_1 = generic_bs_rr_1,
115 .bs_rr_2 = generic_bs_rr_2,
116 .bs_rr_4 = generic_bs_rr_4,
117 .bs_rr_8 = generic_bs_rr_8,
120 .bs_w_1 = generic_bs_w_1,
121 .bs_w_2 = generic_bs_w_2,
122 .bs_w_4 = generic_bs_w_4,
123 .bs_w_8 = generic_bs_w_8,
126 .bs_wm_1 = generic_bs_wm_1,
127 .bs_wm_2 = generic_bs_wm_2,
128 .bs_wm_4 = generic_bs_wm_4,
129 .bs_wm_8 = generic_bs_wm_8,
132 .bs_wr_1 = generic_bs_wr_1,
133 .bs_wr_2 = generic_bs_wr_2,
134 .bs_wr_4 = generic_bs_wr_4,
135 .bs_wr_8 = generic_bs_wr_8,
138 .bs_sm_1 = generic_bs_sm_1,
139 .bs_sm_2 = generic_bs_sm_2,
140 .bs_sm_4 = generic_bs_sm_4,
141 .bs_sm_8 = generic_bs_sm_8,
144 .bs_sr_1 = generic_bs_sr_1,
145 .bs_sr_2 = generic_bs_sr_2,
146 .bs_sr_4 = generic_bs_sr_4,
147 .bs_sr_8 = generic_bs_sr_8,
150 .bs_c_1 = generic_bs_c_1,
151 .bs_c_2 = generic_bs_c_2,
152 .bs_c_4 = generic_bs_c_4,
153 .bs_c_8 = generic_bs_c_8,
155 /* read (single) stream */
156 .bs_r_1_s = generic_bs_r_1,
157 .bs_r_2_s = generic_bs_r_2,
158 .bs_r_4_s = generic_bs_r_4,
159 .bs_r_8_s = generic_bs_r_8,
161 /* read multiple stream */
162 .bs_rm_1_s = generic_bs_rm_1,
163 .bs_rm_2_s = generic_bs_rm_2,
164 .bs_rm_4_s = generic_bs_rm_4,
165 .bs_rm_8_s = generic_bs_rm_8,
167 /* read region stream */
168 .bs_rr_1_s = generic_bs_rr_1,
169 .bs_rr_2_s = generic_bs_rr_2,
170 .bs_rr_4_s = generic_bs_rr_4,
171 .bs_rr_8_s = generic_bs_rr_8,
173 /* write (single) stream */
174 .bs_w_1_s = generic_bs_w_1,
175 .bs_w_2_s = generic_bs_w_2,
176 .bs_w_4_s = generic_bs_w_4,
177 .bs_w_8_s = generic_bs_w_8,
179 /* write multiple stream */
180 .bs_wm_1_s = generic_bs_wm_1,
181 .bs_wm_2_s = generic_bs_wm_2,
182 .bs_wm_4_s = generic_bs_wm_4,
183 .bs_wm_8_s = generic_bs_wm_8,
185 /* write region stream */
186 .bs_wr_1_s = generic_bs_wr_1,
187 .bs_wr_2_s = generic_bs_wr_2,
188 .bs_wr_4_s = generic_bs_wr_4,
189 .bs_wr_8_s = generic_bs_wr_8,
192 /* Ultra-gross kludge */
193 #if defined(CPU_CNMIPS) && (defined(__mips_n32) || defined(__mips_o32))
194 #include <contrib/octeon-sdk/cvmx.h>
195 #define rd8(a) cvmx_read64_uint8(a)
196 #define rd16(a) cvmx_read64_uint16(a)
197 #define rd32(a) cvmx_read64_uint32(a)
198 #define rd64(a) cvmx_read64_uint64(a)
199 #define wr8(a, v) cvmx_write64_uint8(a, v)
200 #define wr16(a, v) cvmx_write64_uint16(a, v)
201 #define wr32(a, v) cvmx_write64_uint32(a, v)
202 #define wr64(a, v) cvmx_write64_uint64(a, v)
203 #elif defined(CPU_SB1) && _BYTE_ORDER == _BIG_ENDIAN
204 #include <mips/sibyte/sb_bus_space.h>
205 #define rd8(a) sb_big_endian_read8(a)
206 #define rd16(a) sb_big_endian_read16(a)
207 #define rd32(a) sb_big_endian_read32(a)
208 #define wr8(a, v) sb_big_endian_write8(a, v)
209 #define wr16(a, v) sb_big_endian_write16(a, v)
210 #define wr32(a, v) sb_big_endian_write32(a, v)
212 #define rd8(a) readb(a)
213 #define rd16(a) readw(a)
214 #define rd32(a) readl(a)
216 #define rd64(a) readq((a))
218 #define wr8(a, v) writeb(a, v)
219 #define wr16(a, v) writew(a, v)
220 #define wr32(a, v) writel(a, v)
222 #define wr64(a, v) writeq(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,
249 bus_size_t offset, bus_size_t size __unused,
250 bus_space_handle_t *bshp)
253 *bshp = handle + offset;
258 generic_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend,
259 bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags,
260 bus_addr_t *bpap, bus_space_handle_t *bshp)
263 panic("%s: not implemented", __func__);
267 generic_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size)
270 panic("%s: not implemented", __func__);
274 generic_bs_r_1(void *t, bus_space_handle_t handle,
278 return (rd8(handle + offset));
282 generic_bs_r_2(void *t, bus_space_handle_t handle,
286 return (rd16(handle + offset));
290 generic_bs_r_4(void *t, bus_space_handle_t handle,
294 return (rd32(handle + offset));
298 generic_bs_r_8(void *t, bus_space_handle_t handle, bus_size_t offset)
302 return(rd64(handle + offset));
304 panic("%s: not implemented", __func__);
309 generic_bs_rm_1(void *t, bus_space_handle_t bsh,
310 bus_size_t offset, uint8_t *addr, size_t count)
314 *addr++ = rd8(bsh + offset);
318 generic_bs_rm_2(void *t, bus_space_handle_t bsh,
319 bus_size_t offset, uint16_t *addr, size_t count)
321 bus_addr_t baddr = bsh + offset;
324 *addr++ = rd16(baddr);
328 generic_bs_rm_4(void *t, bus_space_handle_t bsh,
329 bus_size_t offset, uint32_t *addr, size_t count)
331 bus_addr_t baddr = bsh + offset;
334 *addr++ = rd32(baddr);
338 generic_bs_rm_8(void *t, bus_space_handle_t bsh, bus_size_t offset,
339 uint64_t *addr, size_t count)
342 bus_addr_t baddr = bsh + offset;
345 *addr++ = rd64(baddr);
347 panic("%s: not implemented", __func__);
352 * Read `count' 1, 2, 4, or 8 byte quantities from bus space
353 * described by tag/handle and starting at `offset' and copy into
357 generic_bs_rr_1(void *t, bus_space_handle_t bsh,
358 bus_size_t offset, uint8_t *addr, size_t count)
360 bus_addr_t baddr = bsh + offset;
363 *addr++ = rd8(baddr);
369 generic_bs_rr_2(void *t, bus_space_handle_t bsh,
370 bus_size_t offset, uint16_t *addr, size_t count)
372 bus_addr_t baddr = bsh + offset;
375 *addr++ = rd16(baddr);
381 generic_bs_rr_4(void *t, bus_space_handle_t bsh,
382 bus_size_t offset, uint32_t *addr, size_t count)
384 bus_addr_t baddr = bsh + offset;
387 *addr++ = rd32(baddr);
393 generic_bs_rr_8(void *t, bus_space_handle_t bsh, bus_size_t offset,
394 uint64_t *addr, size_t count)
397 bus_addr_t baddr = bsh + offset;
400 *addr++ = rd64(baddr);
404 panic("%s: not implemented", __func__);
409 * Write the 1, 2, 4, or 8 byte value `value' to bus space
410 * described by tag/handle/offset.
413 generic_bs_w_1(void *t, bus_space_handle_t bsh,
414 bus_size_t offset, uint8_t value)
417 wr8(bsh + offset, value);
421 generic_bs_w_2(void *t, bus_space_handle_t bsh,
422 bus_size_t offset, uint16_t value)
425 wr16(bsh + offset, value);
429 generic_bs_w_4(void *t, bus_space_handle_t bsh,
430 bus_size_t offset, uint32_t value)
433 wr32(bsh + offset, value);
437 generic_bs_w_8(void *t, bus_space_handle_t bsh, bus_size_t offset,
442 wr64(bsh + offset, value);
444 panic("%s: not implemented", __func__);
449 * Write `count' 1, 2, 4, or 8 byte quantities from the buffer
450 * provided to bus space described by tag/handle/offset.
453 generic_bs_wm_1(void *t, bus_space_handle_t bsh,
454 bus_size_t offset, const uint8_t *addr, size_t count)
456 bus_addr_t baddr = bsh + offset;
463 generic_bs_wm_2(void *t, bus_space_handle_t bsh,
464 bus_size_t offset, const uint16_t *addr, size_t count)
466 bus_addr_t baddr = bsh + offset;
469 wr16(baddr, *addr++);
473 generic_bs_wm_4(void *t, bus_space_handle_t bsh,
474 bus_size_t offset, const uint32_t *addr, size_t count)
476 bus_addr_t baddr = bsh + offset;
479 wr32(baddr, *addr++);
483 generic_bs_wm_8(void *t, bus_space_handle_t bsh, bus_size_t offset,
484 const uint64_t *addr, size_t count)
487 bus_addr_t baddr = bsh + offset;
490 wr64(baddr, *addr++);
492 panic("%s: not implemented", __func__);
497 * Write `count' 1, 2, 4, or 8 byte quantities from the buffer provided
498 * to bus space described by tag/handle starting at `offset'.
501 generic_bs_wr_1(void *t, bus_space_handle_t bsh,
502 bus_size_t offset, const uint8_t *addr, size_t count)
504 bus_addr_t baddr = bsh + offset;
513 generic_bs_wr_2(void *t, bus_space_handle_t bsh,
514 bus_size_t offset, const uint16_t *addr, size_t count)
516 bus_addr_t baddr = bsh + offset;
519 wr16(baddr, *addr++);
525 generic_bs_wr_4(void *t, bus_space_handle_t bsh,
526 bus_size_t offset, const uint32_t *addr, size_t count)
528 bus_addr_t baddr = bsh + offset;
531 wr32(baddr, *addr++);
537 generic_bs_wr_8(void *t, bus_space_handle_t bsh, bus_size_t offset,
538 const uint64_t *addr, size_t count)
541 bus_addr_t baddr = bsh + offset;
544 wr64(baddr, *addr++);
548 panic("%s: not implemented", __func__);
553 * Write the 1, 2, 4, or 8 byte value `val' to bus space described
554 * by tag/handle/offset `count' times.
557 generic_bs_sm_1(void *t, bus_space_handle_t bsh,
558 bus_size_t offset, uint8_t value, size_t count)
560 bus_addr_t addr = bsh + offset;
567 generic_bs_sm_2(void *t, bus_space_handle_t bsh,
568 bus_size_t offset, uint16_t value, size_t count)
570 bus_addr_t addr = bsh + offset;
577 generic_bs_sm_4(void *t, bus_space_handle_t bsh,
578 bus_size_t offset, uint32_t value, size_t count)
580 bus_addr_t addr = bsh + offset;
587 generic_bs_sm_8(void *t, bus_space_handle_t bsh, bus_size_t offset,
588 uint64_t value, size_t count)
591 bus_addr_t addr = bsh + offset;
596 panic("%s: not implemented", __func__);
601 * Write `count' 1, 2, 4, or 8 byte value `val' to bus space described
602 * by tag/handle starting at `offset'.
605 generic_bs_sr_1(void *t, bus_space_handle_t bsh,
606 bus_size_t offset, uint8_t value, size_t count)
608 bus_addr_t addr = bsh + offset;
610 for (; count != 0; count--, addr++)
615 generic_bs_sr_2(void *t, bus_space_handle_t bsh,
616 bus_size_t offset, uint16_t value, size_t count)
618 bus_addr_t addr = bsh + offset;
620 for (; count != 0; count--, addr += 2)
625 generic_bs_sr_4(void *t, bus_space_handle_t bsh,
626 bus_size_t offset, uint32_t value, size_t count)
628 bus_addr_t addr = bsh + offset;
630 for (; count != 0; count--, addr += 4)
635 generic_bs_sr_8(void *t, bus_space_handle_t bsh, bus_size_t offset,
636 uint64_t value, size_t count)
639 bus_addr_t addr = bsh + offset;
641 for (; count != 0; count--, addr += 8)
644 panic("%s: not implemented", __func__);
649 * Copy `count' 1, 2, 4, or 8 byte values from bus space starting
650 * at tag/bsh1/off1 to bus space starting at tag/bsh2/off2.
653 generic_bs_c_1(void *t, bus_space_handle_t bsh1,
654 bus_size_t off1, bus_space_handle_t bsh2,
655 bus_size_t off2, size_t count)
657 bus_addr_t addr1 = bsh1 + off1;
658 bus_addr_t addr2 = bsh2 + off2;
660 if (addr1 >= addr2) {
661 /* src after dest: copy forward */
662 for (; count != 0; count--, addr1++, addr2++)
663 wr8(addr2, rd8(addr1));
665 /* dest after src: copy backwards */
666 for (addr1 += (count - 1), addr2 += (count - 1);
667 count != 0; count--, addr1--, addr2--)
668 wr8(addr2, rd8(addr1));
673 generic_bs_c_2(void *t, bus_space_handle_t bsh1,
674 bus_size_t off1, bus_space_handle_t bsh2,
675 bus_size_t off2, size_t count)
677 bus_addr_t addr1 = bsh1 + off1;
678 bus_addr_t addr2 = bsh2 + off2;
680 if (addr1 >= addr2) {
681 /* src after dest: copy forward */
682 for (; count != 0; count--, addr1 += 2, addr2 += 2)
683 wr16(addr2, rd16(addr1));
685 /* dest after src: copy backwards */
686 for (addr1 += 2 * (count - 1), addr2 += 2 * (count - 1);
687 count != 0; count--, addr1 -= 2, addr2 -= 2)
688 wr16(addr2, rd16(addr1));
693 generic_bs_c_4(void *t, bus_space_handle_t bsh1,
694 bus_size_t off1, bus_space_handle_t bsh2,
695 bus_size_t off2, size_t count)
697 bus_addr_t addr1 = bsh1 + off1;
698 bus_addr_t addr2 = bsh2 + off2;
700 if (addr1 >= addr2) {
701 /* src after dest: copy forward */
702 for (; count != 0; count--, addr1 += 4, addr2 += 4)
703 wr32(addr2, rd32(addr1));
705 /* dest after src: copy backwards */
706 for (addr1 += 4 * (count - 1), addr2 += 4 * (count - 1);
707 count != 0; count--, addr1 -= 4, addr2 -= 4)
708 wr32(addr2, rd32(addr1));
713 generic_bs_c_8(void *t, bus_space_handle_t bsh1, bus_size_t off1,
714 bus_space_handle_t bsh2, bus_size_t off2, size_t count)
716 #if defined(rd64) && defined(wr64)
717 bus_addr_t addr1 = bsh1 + off1;
718 bus_addr_t addr2 = bsh2 + off2;
720 if (addr1 >= addr2) {
721 /* src after dest: copy forward */
722 for (; count != 0; count--, addr1 += 8, addr2 += 8)
723 wr64(addr2, rd64(addr1));
725 /* dest after src: copy backwards */
726 for (addr1 += 8 * (count - 1), addr2 += 8 * (count - 1);
727 count != 0; count--, addr1 -= 8, addr2 -= 8)
728 wr64(addr2, rd64(addr1));
731 panic("%s: not implemented", __func__);
736 generic_bs_barrier(void *t __unused,
737 bus_space_handle_t bsh __unused,
738 bus_size_t offset __unused, bus_size_t len __unused,
742 if (flags & BUS_SPACE_BARRIER_WRITE)
743 mips_dcache_wbinv_all();
745 if (flags & BUS_SPACE_BARRIER_READ)
747 if (flags & BUS_SPACE_BARRIER_WRITE)