tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * Copyright (C) 2011 Tobias Klauser <tklauser@distanz.ch>
4 */
5
6#ifndef _ASM_NIOS2_REGISTERS_H
7#define _ASM_NIOS2_REGISTERS_H
8
9#ifndef __ASSEMBLY__
10#include <asm/cpuinfo.h>
11#endif
12
13/* control register numbers */
14#define CTL_STATUS 0
15#define CTL_ESTATUS 1
16#define CTL_BSTATUS 2
17#define CTL_IENABLE 3
18#define CTL_IPENDING 4
19#define CTL_CPUID 5
20#define CTL_RSV1 6
21#define CTL_EXCEPTION 7
22#define CTL_PTEADDR 8
23#define CTL_TLBACC 9
24#define CTL_TLBMISC 10
25#define CTL_RSV2 11
26#define CTL_BADADDR 12
27#define CTL_CONFIG 13
28#define CTL_MPUBASE 14
29#define CTL_MPUACC 15
30
31/* access control registers using GCC builtins */
32#define RDCTL(r) __builtin_rdctl(r)
33#define WRCTL(r, v) __builtin_wrctl(r, v)
34
35/* status register bits */
36#define STATUS_PIE (1 << 0) /* processor interrupt enable */
37#define STATUS_U (1 << 1) /* user mode */
38#define STATUS_EH (1 << 2) /* Exception mode */
39
40/* estatus register bits */
41#define ESTATUS_EPIE (1 << 0) /* processor interrupt enable */
42#define ESTATUS_EU (1 << 1) /* user mode */
43#define ESTATUS_EH (1 << 2) /* Exception mode */
44
45/* tlbmisc register bits */
46#define TLBMISC_PID_SHIFT 4
47#ifndef __ASSEMBLY__
48#define TLBMISC_PID_MASK ((1UL << cpuinfo.tlb_pid_num_bits) - 1)
49#endif
50#define TLBMISC_WAY_MASK 0xf
51#define TLBMISC_WAY_SHIFT 20
52
53#define TLBMISC_PID (TLBMISC_PID_MASK << TLBMISC_PID_SHIFT) /* TLB PID */
54#define TLBMISC_WE (1 << 18) /* TLB write enable */
55#define TLBMISC_RD (1 << 19) /* TLB read */
56#define TLBMISC_WAY (TLBMISC_WAY_MASK << TLBMISC_WAY_SHIFT) /* TLB way */
57
58#endif /* _ASM_NIOS2_REGISTERS_H */