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| author | Kevin Cernekee <cernekee@gmail.com> | 2011-11-16 02:25:44 +0100 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2011-12-07 23:03:18 +0100 |
| commit | 18a1eef92dcd6b8ec30fcbe6e074e5d33ef31c02 (patch) | |
| tree | 70b11c7c4023cb34e8462a60bc7d9f297c40fa13 /arch/mips | |
| parent | MIPS: BMIPS: Add set/clear CP0 macros for BMIPS operations (diff) | |
| download | linux-18a1eef92dcd6b8ec30fcbe6e074e5d33ef31c02.tar.xz linux-18a1eef92dcd6b8ec30fcbe6e074e5d33ef31c02.zip | |
MIPS: BMIPS: Introduce bmips.h
bmips.h contains BMIPS definitions that are useful for SMP, vector
relocation, performance counters, etc.
Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2973/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/include/asm/bmips.h | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/arch/mips/include/asm/bmips.h b/arch/mips/include/asm/bmips.h new file mode 100644 index 000000000000..552a65a0cf2b --- /dev/null +++ b/arch/mips/include/asm/bmips.h @@ -0,0 +1,110 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2011 by Kevin Cernekee (cernekee@gmail.com) + * + * Definitions for BMIPS processors + */ +#ifndef _ASM_BMIPS_H +#define _ASM_BMIPS_H + +#include <linux/compiler.h> +#include <linux/linkage.h> +#include <asm/addrspace.h> +#include <asm/mipsregs.h> +#include <asm/hazards.h> + +/* NOTE: the CBR register returns a PA, and it can be above 0xff00_0000 */ +#define BMIPS_GET_CBR() ((void __iomem *)(CKSEG1 | \ + (unsigned long) \ + ((read_c0_brcm_cbr() >> 18) << 18))) + +#define BMIPS_RAC_CONFIG 0x00000000 +#define BMIPS_RAC_ADDRESS_RANGE 0x00000004 +#define BMIPS_RAC_CONFIG_1 0x00000008 +#define BMIPS_L2_CONFIG 0x0000000c +#define BMIPS_LMB_CONTROL 0x0000001c +#define BMIPS_SYSTEM_BASE 0x00000020 +#define BMIPS_PERF_GLOBAL_CONTROL 0x00020000 +#define BMIPS_PERF_CONTROL_0 0x00020004 +#define BMIPS_PERF_CONTROL_1 0x00020008 +#define BMIPS_PERF_COUNTER_0 0x00020010 +#define BMIPS_PERF_COUNTER_1 0x00020014 +#define BMIPS_PERF_COUNTER_2 0x00020018 +#define BMIPS_PERF_COUNTER_3 0x0002001c +#define BMIPS_RELO_VECTOR_CONTROL_0 0x00030000 +#define BMIPS_RELO_VECTOR_CONTROL_1 0x00038000 + +#define BMIPS_NMI_RESET_VEC 0x80000000 +#define BMIPS_WARM_RESTART_VEC 0x80000380 + +#define ZSCM_REG_BASE 0x97000000 + +#if !defined(__ASSEMBLY__) + +#include <linux/cpumask.h> +#include <asm/r4kcache.h> + +extern struct plat_smp_ops bmips_smp_ops; +extern char bmips_reset_nmi_vec; +extern char bmips_reset_nmi_vec_end; +extern char bmips_smp_movevec; +extern char bmips_smp_int_vec; +extern char bmips_smp_int_vec_end; + +extern int bmips_smp_enabled; +extern int bmips_cpu_offset; +extern cpumask_t bmips_booted_mask; + +extern void bmips_ebase_setup(void); +extern asmlinkage void plat_wired_tlb_setup(void); + +static inline unsigned long bmips_read_zscm_reg(unsigned int offset) +{ + unsigned long ret; + + __asm__ __volatile__( + ".set push\n" + ".set noreorder\n" + "cache %1, 0(%2)\n" + "sync\n" + "_ssnop\n" + "_ssnop\n" + "_ssnop\n" + "_ssnop\n" + "_ssnop\n" + "_ssnop\n" + "_ssnop\n" + "mfc0 %0, $28, 3\n" + "_ssnop\n" + ".set pop\n" + : "=&r" (ret) + : "i" (Index_Load_Tag_S), "r" (ZSCM_REG_BASE + offset) + : "memory"); + return ret; +} + +static inline void bmips_write_zscm_reg(unsigned int offset, unsigned long data) +{ + __asm__ __volatile__( + ".set push\n" + ".set noreorder\n" + "mtc0 %0, $28, 3\n" + "_ssnop\n" + "_ssnop\n" + "_ssnop\n" + "cache %1, 0(%2)\n" + "_ssnop\n" + "_ssnop\n" + "_ssnop\n" + : /* no outputs */ + : "r" (data), + "i" (Index_Store_Tag_S), "r" (ZSCM_REG_BASE + offset) + : "memory"); +} + +#endif /* !defined(__ASSEMBLY__) */ + +#endif /* _ASM_BMIPS_H */ |