1 /* $NetBSD: sysarch.h,v 1.5 2003/09/11 09:40:12 kleink Exp $ */
2
3 /*-
4 * Copyright (c) 1996-1997 Mark Brinicombe.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by Mark Brinicombe.
18 * 4. The name of the company nor the name of the author may be used to
19 * endorse or promote products derived from this software without specific
20 * prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
23 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
24 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25 * IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
26 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
27 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
28 * 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 /* $FreeBSD: releng/11.2/sys/arm/include/sysarch.h 331722 2018-03-29 02:50:57Z eadler $ */
36
37 #ifndef _ARM_SYSARCH_H_
38 #define _ARM_SYSARCH_H_
39
40 #include <machine/armreg.h>
41
42 /*
43 * The ARM_TP_ADDRESS points to a special purpose page, which is used as local
44 * store for the ARM per-thread data and Restartable Atomic Sequences support.
45 * Put it just above the "high" vectors' page.
46 * The cpu_switch() code assumes ARM_RAS_START is ARM_TP_ADDRESS + 4, and
47 * ARM_RAS_END is ARM_TP_ADDRESS + 8, so if that ever changes, be sure to
48 * update the cpu_switch() (and cpu_throw()) code as well.
49 * In addition, code in arm/include/atomic.h and arm/arm/exception.S
50 * assumes that ARM_RAS_END is at ARM_RAS_START+4, so be sure to update those
51 * if ARM_RAS_END moves in relation to ARM_RAS_START (look for occurrences
52 * of ldr/str rm,[rn, #4]).
53 */
54
55 /* ARM_TP_ADDRESS is needed for processors that don't support
56 * the exclusive-access opcodes introduced with ARMv6K. */
57 #if __ARM_ARCH <= 5
58 #define ARM_TP_ADDRESS (ARM_VECTORS_HIGH + 0x1000)
59 #define ARM_RAS_START (ARM_TP_ADDRESS + 4)
60 #define ARM_RAS_END (ARM_TP_ADDRESS + 8)
61 #endif
62
63 #ifndef LOCORE
64 #ifndef __ASSEMBLER__
65
66 #include <sys/cdefs.h>
67
68 /*
69 * Pickup definition of uintptr_t
70 */
71 #include <sys/stdint.h>
72
73 /*
74 * Architecture specific syscalls (arm)
75 */
76
77 #define ARM_SYNC_ICACHE 0
78 #define ARM_DRAIN_WRITEBUF 1
79 #define ARM_SET_TP 2
80 #define ARM_GET_TP 3
81 #define ARM_GET_VFPSTATE 4
82
83 struct arm_sync_icache_args {
84 uintptr_t addr; /* Virtual start address */
85 size_t len; /* Region size */
86 };
87
88 struct arm_get_vfpstate_args {
89 size_t mc_vfp_size;
90 void *mc_vfp;
91 };
92
93 #ifndef _KERNEL
94 __BEGIN_DECLS
95 int arm_sync_icache (u_int addr, int len);
96 int arm_drain_writebuf (void);
97 int sysarch(int, void *);
98 __END_DECLS
99 #endif
100
101 #endif /* __ASSEMBLER__ */
102 #endif /* LOCORE */
103
104 #endif /* !_ARM_SYSARCH_H_ */
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