Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 2011 by Kevin Cernekee (cernekee@gmail.com)
7 *
8 * Definitions for BMIPS processors
9 */
10#ifndef _ASM_BMIPS_H
11#define _ASM_BMIPS_H
12
13#include <linux/compiler.h>
14#include <linux/linkage.h>
15#include <asm/addrspace.h>
16#include <asm/mipsregs.h>
17#include <asm/hazards.h>
18
19/* NOTE: the CBR register returns a PA, and it can be above 0xff00_0000 */
20#define BMIPS_GET_CBR() ((void __iomem *)(CKSEG1 | \
21 (unsigned long) \
22 ((read_c0_brcm_cbr() >> 18) << 18)))
23
24#define BMIPS_RAC_CONFIG 0x00000000
25#define BMIPS_RAC_ADDRESS_RANGE 0x00000004
26#define BMIPS_RAC_CONFIG_1 0x00000008
27#define BMIPS_L2_CONFIG 0x0000000c
28#define BMIPS_LMB_CONTROL 0x0000001c
29#define BMIPS_SYSTEM_BASE 0x00000020
30#define BMIPS_PERF_GLOBAL_CONTROL 0x00020000
31#define BMIPS_PERF_CONTROL_0 0x00020004
32#define BMIPS_PERF_CONTROL_1 0x00020008
33#define BMIPS_PERF_COUNTER_0 0x00020010
34#define BMIPS_PERF_COUNTER_1 0x00020014
35#define BMIPS_PERF_COUNTER_2 0x00020018
36#define BMIPS_PERF_COUNTER_3 0x0002001c
37#define BMIPS_RELO_VECTOR_CONTROL_0 0x00030000
38#define BMIPS_RELO_VECTOR_CONTROL_1 0x00038000
39
40#define BMIPS_NMI_RESET_VEC 0x80000000
41#define BMIPS_WARM_RESTART_VEC 0x80000380
42
43#define ZSCM_REG_BASE 0x97000000
44
45#if !defined(__ASSEMBLY__)
46
47#include <linux/cpumask.h>
48#include <asm/r4kcache.h>
49
50extern struct plat_smp_ops bmips_smp_ops;
51extern char bmips_reset_nmi_vec;
52extern char bmips_reset_nmi_vec_end;
53extern char bmips_smp_movevec;
54extern char bmips_smp_int_vec;
55extern char bmips_smp_int_vec_end;
56
57extern int bmips_smp_enabled;
58extern int bmips_cpu_offset;
59extern cpumask_t bmips_booted_mask;
60
61extern void bmips_ebase_setup(void);
62extern asmlinkage void plat_wired_tlb_setup(void);
63
64static inline unsigned long bmips_read_zscm_reg(unsigned int offset)
65{
66 unsigned long ret;
67
68 barrier();
69 cache_op(Index_Load_Tag_S, ZSCM_REG_BASE + offset);
70 __sync();
71 _ssnop();
72 _ssnop();
73 _ssnop();
74 _ssnop();
75 _ssnop();
76 _ssnop();
77 _ssnop();
78 ret = read_c0_ddatalo();
79 _ssnop();
80
81 return ret;
82}
83
84static inline void bmips_write_zscm_reg(unsigned int offset, unsigned long data)
85{
86 write_c0_ddatalo(data);
87 _ssnop();
88 _ssnop();
89 _ssnop();
90 cache_op(Index_Store_Tag_S, ZSCM_REG_BASE + offset);
91 _ssnop();
92 _ssnop();
93 _ssnop();
94 barrier();
95}
96
97#endif /* !defined(__ASSEMBLY__) */
98
99#endif /* _ASM_BMIPS_H */