diff options
author | Maxime Bizon <mbizon@freebox.fr> | 2011-11-04 19:09:26 +0100 |
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committer | Ralf Baechle <ralf@linux-mips.org> | 2011-12-07 22:03:02 +0000 |
commit | 455a503f4cd4971b26e431904d98fdf5beea1075 (patch) | |
tree | b8c2cd3127621c774280130d315f2cf5b8d96ef2 /arch/mips/include/asm/mach-bcm63xx | |
parent | 5611cc4572e889b62a7b4c72a413536bf6a9c416 (diff) | |
download | op-kernel-dev-455a503f4cd4971b26e431904d98fdf5beea1075.zip op-kernel-dev-455a503f4cd4971b26e431904d98fdf5beea1075.tar.gz |
MIPS: BCM63XX: Hook up plat_ioremap to intercept soc registers remapping.
Internal SOC registers can be directly accessed, no need to waste a
TLB entry.
Signed-off-by: Maxime Bizon <mbizon@freebox.fr>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2890/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/include/asm/mach-bcm63xx')
-rw-r--r-- | arch/mips/include/asm/mach-bcm63xx/ioremap.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/arch/mips/include/asm/mach-bcm63xx/ioremap.h b/arch/mips/include/asm/mach-bcm63xx/ioremap.h new file mode 100644 index 0000000..e3fe04d --- /dev/null +++ b/arch/mips/include/asm/mach-bcm63xx/ioremap.h @@ -0,0 +1,38 @@ +#ifndef BCM63XX_IOREMAP_H_ +#define BCM63XX_IOREMAP_H_ + +#include <bcm63xx_cpu.h> + +static inline phys_t fixup_bigphys_addr(phys_t phys_addr, phys_t size) +{ + return phys_addr; +} + +static inline int is_bcm63xx_internal_registers(phys_t offset) +{ + switch (bcm63xx_get_cpu_id()) { + case BCM6338_CPU_ID: + case BCM6345_CPU_ID: + case BCM6348_CPU_ID: + case BCM6358_CPU_ID: + if (offset >= 0xfff00000) + return 1; + break; + } + return 0; +} + +static inline void __iomem *plat_ioremap(phys_t offset, unsigned long size, + unsigned long flags) +{ + if (is_bcm63xx_internal_registers(offset)) + return (void __iomem *)offset; + return NULL; +} + +static inline int plat_iounmap(const volatile void __iomem *addr) +{ + return is_bcm63xx_internal_registers((unsigned long)addr); +} + +#endif /* BCM63XX_IOREMAP_H_ */ |