1 /* $NetBSD: cache_r4k.c,v 1.14 2016/07/11 23:06:54 matt Exp $ */
2
3 /*
4 * Copyright 2001 Wasabi Systems, Inc.
5 * All rights reserved.
6 *
7 * Written by Jason R. Thorpe for Wasabi Systems, Inc.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 * must display the following acknowledgement:
19 * This product includes software developed for the NetBSD Project by
20 * Wasabi Systems, Inc.
21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse
22 * or promote products derived from this software without specific prior
23 * written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
35 * POSSIBILITY OF SUCH DAMAGE.
36 */
37
38 #include <sys/cdefs.h>
39 __KERNEL_RCSID(0, "$NetBSD: cache_r4k.c,v 1.14 2016/07/11 23:06:54 matt Exp $");
40
41 #include <sys/param.h>
42
43 #include <mips/cpuregs.h>
44 #include <mips/cache.h>
45 #include <mips/cache_r4k.h>
46
47 /*
48 * Cache operations for R4000/R4400-style caches:
49 *
50 * - Direct-mapped
51 * - Write-back
52 * - Virtually indexed, physically tagged
53 *
54 * XXX Does not handle split secondary caches.
55 */
56
57 void
r4k_icache_sync_all_generic(void)58 r4k_icache_sync_all_generic(void)
59 {
60 mips_dcache_wbinv_all();
61
62 mips_intern_icache_sync_range_index(MIPS_PHYS_TO_KSEG0(0),
63 mips_cache_info.mci_picache_size);
64 }
65
66 void
r4k_icache_sync_range_generic(register_t va,vsize_t size)67 r4k_icache_sync_range_generic(register_t va, vsize_t size)
68 {
69 mips_dcache_wb_range(va, size);
70
71 mips_intern_icache_sync_range_index(va, size);
72 }
73
74 void
r4k_icache_sync_range_index_generic(vaddr_t va,vsize_t size)75 r4k_icache_sync_range_index_generic(vaddr_t va, vsize_t size)
76 {
77 mips_dcache_wbinv_range_index(va, size);
78
79 /*
80 * Since we're doing Index ops, we expect to not be able
81 * to access the address we've been given. So, get the
82 * bits that determine the cache index, and make a KSEG0
83 * address out of them.
84 */
85 va = MIPS_PHYS_TO_KSEG0(va & mips_cache_info.mci_picache_way_mask);
86 size &= mips_cache_info.mci_picache_way_mask;
87
88 mips_intern_icache_sync_range_index(va, size);
89 }
90
91 void
r4k_pdcache_wbinv_all_generic(void)92 r4k_pdcache_wbinv_all_generic(void)
93 {
94 mips_intern_pdcache_wbinv_range_index(MIPS_PHYS_TO_KSEG0(0),
95 mips_cache_info.mci_pdcache_size);
96 }
97
98 void
r4k_sdcache_wbinv_all_generic(void)99 r4k_sdcache_wbinv_all_generic(void)
100 {
101 mips_intern_sdcache_wbinv_range_index(MIPS_PHYS_TO_KSEG0(0),
102 mips_cache_info.mci_sdcache_size);
103 }
104