1 /*-
2 * Copyright (c) 2015-2016 Ruslan Bukin <br@bsdpad.com>
3 * All rights reserved.
4 *
5 * Portions of this software were developed by SRI International and the
6 * University of Cambridge Computer Laboratory under DARPA/AFRL contract
7 * FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research programme.
8 *
9 * Portions of this software were developed by the University of Cambridge
10 * Computer Laboratory as part of the CTSRD Project, with support from the
11 * UK Higher Education Innovation Fund (HEIF).
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35 #include <machine/asm.h>
36 #include <machine/param.h>
37 __FBSDID("$FreeBSD: releng/11.2/sys/riscv/riscv/cpufunc_asm.S 295972 2016-02-24 16:50:34Z br $");
38
39 .text
40 .align 2
41
42 .Lpage_mask:
43 .word PAGE_MASK
44
45 ENTRY(riscv_nullop)
46 ret
47 END(riscv_nullop)
48
49 /*
50 * Generic functions to read/modify/write the internal coprocessor registers
51 */
52
53 ENTRY(riscv_tlb_flushID)
54 sfence.vm
55 ret
56 END(riscv_tlb_flushID)
57
58 ENTRY(riscv_tlb_flushID_SE)
59 sfence.vm
60 ret
61 END(riscv_tlb_flushID_SE)
62
63 /*
64 * void riscv_dcache_wb_range(vm_offset_t, vm_size_t)
65 */
66 ENTRY(riscv_dcache_wb_range)
67 sfence.vm
68 ret
69 END(riscv_dcache_wb_range)
70
71 /*
72 * void riscv_dcache_wbinv_range(vm_offset_t, vm_size_t)
73 */
74 ENTRY(riscv_dcache_wbinv_range)
75 sfence.vm
76 ret
77 END(riscv_dcache_wbinv_range)
78
79 /*
80 * void riscv_dcache_inv_range(vm_offset_t, vm_size_t)
81 */
82 ENTRY(riscv_dcache_inv_range)
83 sfence.vm
84 ret
85 END(riscv_dcache_inv_range)
86
87 /*
88 * void riscv_idcache_wbinv_range(vm_offset_t, vm_size_t)
89 */
90 ENTRY(riscv_idcache_wbinv_range)
91 fence.i
92 sfence.vm
93 ret
94 END(riscv_idcache_wbinv_range)
95
96 /*
97 * void riscv_icache_sync_range(vm_offset_t, vm_size_t)
98 */
99 ENTRY(riscv_icache_sync_range)
100 fence.i
101 ret
102 END(riscv_icache_sync_range)
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