2 * Copyright (c) 2006 Semihalf, Rafal Jaworowski <raj@semihalf.com>
3 * Copyright (c) 1996, 1997, 1998 The NetBSD Foundation, Inc.
6 * This code is derived from software contributed to The NetBSD Foundation
7 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
8 * NASA Ames Research Center.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
38 #include <sys/param.h>
39 #include <sys/systm.h>
45 #include <machine/bus.h>
46 #include <machine/pio.h>
47 #include <machine/md_var.h>
49 #define TODO panic("%s: not implemented", __func__)
51 #define MAX_EARLYBOOT_MAPPINGS 6
58 } earlyboot_mappings[MAX_EARLYBOOT_MAPPINGS];
59 static int earlyboot_map_idx = 0;
61 void bs_remap_earlyboot(void);
63 static __inline void *
64 __ppc_ba(bus_space_handle_t bsh, bus_size_t ofs)
66 return ((void *)(bsh + ofs));
70 bs_gen_map(bus_addr_t addr, bus_size_t size, int flags,
71 bus_space_handle_t *bshp)
76 * Record what we did if we haven't enabled the MMU yet. We
77 * will need to remap it as soon as the MMU comes up.
79 if (!pmap_bootstrapped) {
80 KASSERT(earlyboot_map_idx < MAX_EARLYBOOT_MAPPINGS,
81 ("%s: too many early boot mapping requests", __func__));
82 earlyboot_mappings[earlyboot_map_idx].addr = addr;
83 earlyboot_mappings[earlyboot_map_idx].virt =
84 pmap_early_io_map(addr, size);
85 earlyboot_mappings[earlyboot_map_idx].size = size;
86 earlyboot_mappings[earlyboot_map_idx].flags = flags;
87 *bshp = earlyboot_mappings[earlyboot_map_idx].virt;
90 ma = VM_MEMATTR_DEFAULT;
92 case BUS_SPACE_MAP_CACHEABLE:
93 ma = VM_MEMATTR_CACHEABLE;
95 case BUS_SPACE_MAP_PREFETCHABLE:
96 ma = VM_MEMATTR_PREFETCHABLE;
99 *bshp = (bus_space_handle_t)pmap_mapdev_attr(addr, size, ma);
106 bs_remap_earlyboot(void)
109 vm_offset_t pa, spa, va;
112 for (i = 0; i < earlyboot_map_idx; i++) {
113 spa = earlyboot_mappings[i].addr;
114 if (spa == earlyboot_mappings[i].virt &&
115 pmap_dev_direct_mapped(spa, earlyboot_mappings[i].size) == 0)
118 ma = VM_MEMATTR_DEFAULT;
119 switch (earlyboot_mappings[i].flags) {
120 case BUS_SPACE_MAP_CACHEABLE:
121 ma = VM_MEMATTR_CACHEABLE;
123 case BUS_SPACE_MAP_PREFETCHABLE:
124 ma = VM_MEMATTR_PREFETCHABLE;
128 pa = trunc_page(spa);
129 va = trunc_page(earlyboot_mappings[i].virt);
130 while (pa < spa + earlyboot_mappings[i].size) {
131 pmap_kenter_attr(va, pa, ma);
139 bs_gen_unmap(bus_size_t size __unused)
144 bs_gen_subregion(bus_space_handle_t bsh, bus_size_t ofs,
145 bus_size_t size __unused, bus_space_handle_t *nbshp)
152 bs_gen_alloc(bus_addr_t rstart __unused, bus_addr_t rend __unused,
153 bus_size_t size __unused, bus_size_t alignment __unused,
154 bus_size_t boundary __unused, int flags __unused,
155 bus_addr_t *bpap __unused, bus_space_handle_t *bshp __unused)
161 bs_gen_free(bus_space_handle_t bsh __unused, bus_size_t size __unused)
167 bs_gen_barrier(bus_space_handle_t bsh __unused, bus_size_t ofs __unused,
168 bus_size_t size __unused, int flags __unused)
175 * Big-endian access functions
178 bs_be_rs_1(bus_space_handle_t bsh, bus_size_t ofs)
180 volatile uint8_t *addr;
183 addr = __ppc_ba(bsh, ofs);
186 CTR4(KTR_BE_IO, "%s(bsh=%#x, ofs=%#x) = %#x", __func__, bsh, ofs, res);
191 bs_be_rs_2(bus_space_handle_t bsh, bus_size_t ofs)
193 volatile uint16_t *addr;
196 addr = __ppc_ba(bsh, ofs);
199 CTR4(KTR_BE_IO, "%s(bsh=%#x, ofs=%#x) = %#x", __func__, bsh, ofs, res);
204 bs_be_rs_4(bus_space_handle_t bsh, bus_size_t ofs)
206 volatile uint32_t *addr;
209 addr = __ppc_ba(bsh, ofs);
212 CTR4(KTR_BE_IO, "%s(bsh=%#x, ofs=%#x) = %#x", __func__, bsh, ofs, res);
217 bs_be_rs_8(bus_space_handle_t bsh, bus_size_t ofs)
219 volatile uint64_t *addr;
222 addr = __ppc_ba(bsh, ofs);
229 bs_be_rm_1(bus_space_handle_t bsh, bus_size_t ofs, uint8_t *addr, size_t cnt)
231 ins8(__ppc_ba(bsh, ofs), addr, cnt);
235 bs_be_rm_2(bus_space_handle_t bsh, bus_size_t ofs, uint16_t *addr, size_t cnt)
237 ins16(__ppc_ba(bsh, ofs), addr, cnt);
241 bs_be_rm_4(bus_space_handle_t bsh, bus_size_t ofs, uint32_t *addr, size_t cnt)
243 ins32(__ppc_ba(bsh, ofs), addr, cnt);
247 bs_be_rm_8(bus_space_handle_t bsh, bus_size_t ofs, uint64_t *addr, size_t cnt)
249 ins64(__ppc_ba(bsh, ofs), addr, cnt);
253 bs_be_rr_1(bus_space_handle_t bsh, bus_size_t ofs, uint8_t *addr, size_t cnt)
255 volatile uint8_t *s = __ppc_ba(bsh, ofs);
263 bs_be_rr_2(bus_space_handle_t bsh, bus_size_t ofs, uint16_t *addr, size_t cnt)
265 volatile uint16_t *s = __ppc_ba(bsh, ofs);
273 bs_be_rr_4(bus_space_handle_t bsh, bus_size_t ofs, uint32_t *addr, size_t cnt)
275 volatile uint32_t *s = __ppc_ba(bsh, ofs);
283 bs_be_rr_8(bus_space_handle_t bsh, bus_size_t ofs, uint64_t *addr, size_t cnt)
285 volatile uint64_t *s = __ppc_ba(bsh, ofs);
293 bs_be_ws_1(bus_space_handle_t bsh, bus_size_t ofs, uint8_t val)
295 volatile uint8_t *addr;
297 addr = __ppc_ba(bsh, ofs);
300 CTR4(KTR_BE_IO, "%s(bsh=%#x, ofs=%#x, val=%#x)", __func__, bsh, ofs, val);
304 bs_be_ws_2(bus_space_handle_t bsh, bus_size_t ofs, uint16_t val)
306 volatile uint16_t *addr;
308 addr = __ppc_ba(bsh, ofs);
311 CTR4(KTR_BE_IO, "%s(bsh=%#x, ofs=%#x, val=%#x)", __func__, bsh, ofs, val);
315 bs_be_ws_4(bus_space_handle_t bsh, bus_size_t ofs, uint32_t val)
317 volatile uint32_t *addr;
319 addr = __ppc_ba(bsh, ofs);
322 CTR4(KTR_BE_IO, "%s(bsh=%#x, ofs=%#x, val=%#x)", __func__, bsh, ofs, val);
326 bs_be_ws_8(bus_space_handle_t bsh, bus_size_t ofs, uint64_t val)
328 volatile uint64_t *addr;
330 addr = __ppc_ba(bsh, ofs);
336 bs_be_wm_1(bus_space_handle_t bsh, bus_size_t ofs, const uint8_t *addr,
339 outsb(__ppc_ba(bsh, ofs), addr, cnt);
343 bs_be_wm_2(bus_space_handle_t bsh, bus_size_t ofs, const uint16_t *addr,
346 outsw(__ppc_ba(bsh, ofs), addr, cnt);
350 bs_be_wm_4(bus_space_handle_t bsh, bus_size_t ofs, const uint32_t *addr,
353 outsl(__ppc_ba(bsh, ofs), addr, cnt);
357 bs_be_wm_8(bus_space_handle_t bsh, bus_size_t ofs, const uint64_t *addr,
360 outsll(__ppc_ba(bsh, ofs), addr, cnt);
364 bs_be_wr_1(bus_space_handle_t bsh, bus_size_t ofs, const uint8_t *addr,
367 volatile uint8_t *d = __ppc_ba(bsh, ofs);
375 bs_be_wr_2(bus_space_handle_t bsh, bus_size_t ofs, const uint16_t *addr,
378 volatile uint16_t *d = __ppc_ba(bsh, ofs);
386 bs_be_wr_4(bus_space_handle_t bsh, bus_size_t ofs, const uint32_t *addr,
389 volatile uint32_t *d = __ppc_ba(bsh, ofs);
397 bs_be_wr_8(bus_space_handle_t bsh, bus_size_t ofs, const uint64_t *addr,
400 volatile uint64_t *d = __ppc_ba(bsh, ofs);
408 bs_be_sm_1(bus_space_handle_t bsh, bus_size_t ofs, uint8_t val, size_t cnt)
410 volatile uint8_t *d = __ppc_ba(bsh, ofs);
418 bs_be_sm_2(bus_space_handle_t bsh, bus_size_t ofs, uint16_t val, size_t cnt)
420 volatile uint16_t *d = __ppc_ba(bsh, ofs);
428 bs_be_sm_4(bus_space_handle_t bsh, bus_size_t ofs, uint32_t val, size_t cnt)
430 volatile uint32_t *d = __ppc_ba(bsh, ofs);
438 bs_be_sm_8(bus_space_handle_t bsh, bus_size_t ofs, uint64_t val, size_t cnt)
440 volatile uint64_t *d = __ppc_ba(bsh, ofs);
448 bs_be_sr_1(bus_space_handle_t bsh, bus_size_t ofs, uint8_t val, size_t cnt)
450 volatile uint8_t *d = __ppc_ba(bsh, ofs);
458 bs_be_sr_2(bus_space_handle_t bsh, bus_size_t ofs, uint16_t val, size_t cnt)
460 volatile uint16_t *d = __ppc_ba(bsh, ofs);
468 bs_be_sr_4(bus_space_handle_t bsh, bus_size_t ofs, uint32_t val, size_t cnt)
470 volatile uint32_t *d = __ppc_ba(bsh, ofs);
478 bs_be_sr_8(bus_space_handle_t bsh, bus_size_t ofs, uint64_t val, size_t cnt)
480 volatile uint64_t *d = __ppc_ba(bsh, ofs);
488 * Little-endian access functions
491 bs_le_rs_1(bus_space_handle_t bsh, bus_size_t ofs)
493 volatile uint8_t *addr;
496 addr = __ppc_ba(bsh, ofs);
499 CTR4(KTR_LE_IO, "%s(bsh=%#x, ofs=%#x) = %#x", __func__, bsh, ofs, res);
504 bs_le_rs_2(bus_space_handle_t bsh, bus_size_t ofs)
506 volatile uint16_t *addr;
509 addr = __ppc_ba(bsh, ofs);
510 __asm __volatile("lhbrx %0, 0, %1" : "=r"(res) : "r"(addr));
512 CTR4(KTR_LE_IO, "%s(bsh=%#x, ofs=%#x) = %#x", __func__, bsh, ofs, res);
517 bs_le_rs_4(bus_space_handle_t bsh, bus_size_t ofs)
519 volatile uint32_t *addr;
522 addr = __ppc_ba(bsh, ofs);
523 __asm __volatile("lwbrx %0, 0, %1" : "=r"(res) : "r"(addr));
525 CTR4(KTR_LE_IO, "%s(bsh=%#x, ofs=%#x) = %#x", __func__, bsh, ofs, res);
530 bs_le_rs_8(bus_space_handle_t bsh, bus_size_t ofs)
536 bs_le_rm_1(bus_space_handle_t bsh, bus_size_t ofs, uint8_t *addr, size_t cnt)
538 ins8(__ppc_ba(bsh, ofs), addr, cnt);
542 bs_le_rm_2(bus_space_handle_t bsh, bus_size_t ofs, uint16_t *addr, size_t cnt)
544 ins16rb(__ppc_ba(bsh, ofs), addr, cnt);
548 bs_le_rm_4(bus_space_handle_t bsh, bus_size_t ofs, uint32_t *addr, size_t cnt)
550 ins32rb(__ppc_ba(bsh, ofs), addr, cnt);
554 bs_le_rm_8(bus_space_handle_t bshh, bus_size_t ofs, uint64_t *addr, size_t cnt)
560 bs_le_rr_1(bus_space_handle_t bsh, bus_size_t ofs, uint8_t *addr, size_t cnt)
562 volatile uint8_t *s = __ppc_ba(bsh, ofs);
570 bs_le_rr_2(bus_space_handle_t bsh, bus_size_t ofs, uint16_t *addr, size_t cnt)
572 volatile uint16_t *s = __ppc_ba(bsh, ofs);
575 *addr++ = in16rb(s++);
580 bs_le_rr_4(bus_space_handle_t bsh, bus_size_t ofs, uint32_t *addr, size_t cnt)
582 volatile uint32_t *s = __ppc_ba(bsh, ofs);
585 *addr++ = in32rb(s++);
590 bs_le_rr_8(bus_space_handle_t bsh, bus_size_t ofs, uint64_t *addr, size_t cnt)
596 bs_le_ws_1(bus_space_handle_t bsh, bus_size_t ofs, uint8_t val)
598 volatile uint8_t *addr;
600 addr = __ppc_ba(bsh, ofs);
603 CTR4(KTR_LE_IO, "%s(bsh=%#x, ofs=%#x, val=%#x)", __func__, bsh, ofs, val);
607 bs_le_ws_2(bus_space_handle_t bsh, bus_size_t ofs, uint16_t val)
609 volatile uint16_t *addr;
611 addr = __ppc_ba(bsh, ofs);
612 __asm __volatile("sthbrx %0, 0, %1" :: "r"(val), "r"(addr));
614 CTR4(KTR_LE_IO, "%s(bsh=%#x, ofs=%#x, val=%#x)", __func__, bsh, ofs, val);
618 bs_le_ws_4(bus_space_handle_t bsh, bus_size_t ofs, uint32_t val)
620 volatile uint32_t *addr;
622 addr = __ppc_ba(bsh, ofs);
623 __asm __volatile("stwbrx %0, 0, %1" :: "r"(val), "r"(addr));
625 CTR4(KTR_LE_IO, "%s(bsh=%#x, ofs=%#x, val=%#x)", __func__, bsh, ofs, val);
629 bs_le_ws_8(bus_space_handle_t bsh, bus_size_t ofs, uint64_t val)
635 bs_le_wm_1(bus_space_handle_t bsh, bus_size_t ofs, const uint8_t *addr,
638 outs8(__ppc_ba(bsh, ofs), addr, cnt);
642 bs_le_wm_2(bus_space_handle_t bsh, bus_size_t ofs, const uint16_t *addr,
645 outs16rb(__ppc_ba(bsh, ofs), addr, cnt);
649 bs_le_wm_4(bus_space_handle_t bsh, bus_size_t ofs, const uint32_t *addr,
652 outs32rb(__ppc_ba(bsh, ofs), addr, cnt);
656 bs_le_wm_8(bus_space_handle_t bsh, bus_size_t ofs, const uint64_t *addr,
663 bs_le_wr_1(bus_space_handle_t bsh, bus_size_t ofs, const uint8_t *addr,
666 volatile uint8_t *d = __ppc_ba(bsh, ofs);
674 bs_le_wr_2(bus_space_handle_t bsh, bus_size_t ofs, const uint16_t *addr,
677 volatile uint16_t *d = __ppc_ba(bsh, ofs);
680 out16rb(d++, *addr++);
685 bs_le_wr_4(bus_space_handle_t bsh, bus_size_t ofs, const uint32_t *addr,
688 volatile uint32_t *d = __ppc_ba(bsh, ofs);
691 out32rb(d++, *addr++);
696 bs_le_wr_8(bus_space_handle_t bsh, bus_size_t ofs, const uint64_t *addr,
703 bs_le_sm_1(bus_space_handle_t bsh, bus_size_t ofs, uint8_t val, size_t cnt)
705 volatile uint8_t *d = __ppc_ba(bsh, ofs);
713 bs_le_sm_2(bus_space_handle_t bsh, bus_size_t ofs, uint16_t val, size_t cnt)
715 volatile uint16_t *d = __ppc_ba(bsh, ofs);
723 bs_le_sm_4(bus_space_handle_t bsh, bus_size_t ofs, uint32_t val, size_t cnt)
725 volatile uint32_t *d = __ppc_ba(bsh, ofs);
733 bs_le_sm_8(bus_space_handle_t bsh, bus_size_t ofs, uint64_t val, size_t cnt)
739 bs_le_sr_1(bus_space_handle_t bsh, bus_size_t ofs, uint8_t val, size_t cnt)
741 volatile uint8_t *d = __ppc_ba(bsh, ofs);
749 bs_le_sr_2(bus_space_handle_t bsh, bus_size_t ofs, uint16_t val, size_t cnt)
751 volatile uint16_t *d = __ppc_ba(bsh, ofs);
759 bs_le_sr_4(bus_space_handle_t bsh, bus_size_t ofs, uint32_t val, size_t cnt)
761 volatile uint32_t *d = __ppc_ba(bsh, ofs);
769 bs_le_sr_8(bus_space_handle_t bsh, bus_size_t ofs, uint64_t val, size_t cnt)
774 struct bus_space bs_be_tag = {
775 /* mapping/unmapping */
780 /* allocation/deallocation */
868 struct bus_space bs_le_tag = {
869 /* mapping/unmapping */
874 /* allocation/deallocation */