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Commit 455a503f authored by Maxime Bizon's avatar Maxime Bizon Committed by Ralf Baechle
Browse files

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: default avatarMaxime Bizon <mbizon@freebox.fr>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2890/


Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 5611cc45

arch/mips/include/asm/mach-bcm63xx/ioremap.h

0 → 100644
+38 −0
Original line number Diff line number Diff line 
#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_ */