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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /arch/mips/include/asm/mach-generic/spaces.h | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/mips/include/asm/mach-generic/spaces.h')
-rw-r--r-- | arch/mips/include/asm/mach-generic/spaces.h | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/arch/mips/include/asm/mach-generic/spaces.h b/arch/mips/include/asm/mach-generic/spaces.h new file mode 100644 index 000000000..b247575c5 --- /dev/null +++ b/arch/mips/include/asm/mach-generic/spaces.h @@ -0,0 +1,98 @@ +/* + * 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) 1994 - 1999, 2000, 03, 04 Ralf Baechle + * Copyright (C) 2000, 2002 Maciej W. Rozycki + * Copyright (C) 1990, 1999, 2000 Silicon Graphics, Inc. + */ +#ifndef _ASM_MACH_GENERIC_SPACES_H +#define _ASM_MACH_GENERIC_SPACES_H + +#include <linux/const.h> + +#include <asm/mipsregs.h> + +#ifndef IO_SPACE_LIMIT +#define IO_SPACE_LIMIT 0xffff +#endif + +/* + * This gives the physical RAM offset. + */ +#ifndef __ASSEMBLY__ +# if defined(CONFIG_MIPS_AUTO_PFN_OFFSET) +# define PHYS_OFFSET ((unsigned long)PFN_PHYS(ARCH_PFN_OFFSET)) +# elif !defined(PHYS_OFFSET) +# define PHYS_OFFSET _AC(0, UL) +# endif +#endif /* __ASSEMBLY__ */ + +#ifdef CONFIG_32BIT +#define CAC_BASE _AC(0x80000000, UL) +#ifndef IO_BASE +#define IO_BASE _AC(0xa0000000, UL) +#endif +#ifndef UNCAC_BASE +#define UNCAC_BASE _AC(0xa0000000, UL) +#endif + +#ifndef MAP_BASE +#define MAP_BASE _AC(0xc0000000, UL) +#endif + +/* + * Memory above this physical address will be considered highmem. + */ +#ifndef HIGHMEM_START +#define HIGHMEM_START _AC(0x20000000, UL) +#endif + +#endif /* CONFIG_32BIT */ + +#ifdef CONFIG_64BIT + +#ifndef CAC_BASE +#define CAC_BASE PHYS_TO_XKPHYS(read_c0_config() & CONF_CM_CMASK, 0) +#endif + +#ifndef IO_BASE +#define IO_BASE _AC(0x9000000000000000, UL) +#endif + +#ifndef UNCAC_BASE +#define UNCAC_BASE _AC(0x9000000000000000, UL) +#endif + +#ifndef MAP_BASE +#define MAP_BASE _AC(0xc000000000000000, UL) +#endif + +/* + * Memory above this physical address will be considered highmem. + * Fixme: 59 bits is a fictive number and makes assumptions about processors + * in the distant future. Nobody will care for a few years :-) + */ +#ifndef HIGHMEM_START +#define HIGHMEM_START (_AC(1, UL) << _AC(59, UL)) +#endif + +#define TO_PHYS(x) ( ((x) & TO_PHYS_MASK)) +#define TO_CAC(x) (CAC_BASE | ((x) & TO_PHYS_MASK)) +#define TO_UNCAC(x) (UNCAC_BASE | ((x) & TO_PHYS_MASK)) + +#endif /* CONFIG_64BIT */ + +/* + * This handles the memory map. + */ +#ifndef PAGE_OFFSET +#define PAGE_OFFSET (CAC_BASE + PHYS_OFFSET) +#endif + +#ifndef FIXADDR_TOP +#define FIXADDR_TOP ((unsigned long)(long)(int)0xfffe0000) +#endif + +#endif /* __ASM_MACH_GENERIC_SPACES_H */ |