diff options
| author | Florian Fainelli <f.fainelli@gmail.com> | 2015-04-07 13:34:00 -0700 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2015-04-08 23:52:32 +0200 |
| commit | 36fe97635826d54d07c51a5953148235b7dd6a04 (patch) | |
| tree | 0c73ddd2fcb135be088be7b1bd2a4a88f911c008 /arch/mips/include/asm/bmips.h | |
| parent | 87842661a315618dfdeeede188257e4011164023 (diff) | |
MIPS: BMIPS: Move post DMA flush implementation to common header
arch/mips/include/asm/mach-bmips/dma-coherence.h contains the
plat_post_dma_flush implementation which is not specific to mach-bmips,
but required for all BMIPS-based systems.
Move plat_post_dma_flush to arch/mips/include/asm/bmips.h, rename it to
bmips_post_dma_flush such that other platforms like bcm63xx can utilize
it.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: cernekee@gmail.com
Cc: jogo@openwrt.org
Patchwork: https://patchwork.linux-mips.org/patch/9724/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/include/asm/bmips.h')
| -rw-r--r-- | arch/mips/include/asm/bmips.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/mips/include/asm/bmips.h b/arch/mips/include/asm/bmips.h index 30939b02e3ff..6d25ad33ec78 100644 --- a/arch/mips/include/asm/bmips.h +++ b/arch/mips/include/asm/bmips.h @@ -122,6 +122,22 @@ static inline void bmips_write_zscm_reg(unsigned int offset, unsigned long data) barrier(); } +static inline void bmips_post_dma_flush(struct device *dev) +{ + void __iomem *cbr = BMIPS_GET_CBR(); + u32 cfg; + + if (boot_cpu_type() != CPU_BMIPS3300 && + boot_cpu_type() != CPU_BMIPS4350 && + boot_cpu_type() != CPU_BMIPS4380) + return; + + /* Flush stale data out of the readahead cache */ + cfg = __raw_readl(cbr + BMIPS_RAC_CONFIG); + __raw_writel(cfg | 0x100, cbr + BMIPS_RAC_CONFIG); + __raw_readl(cbr + BMIPS_RAC_CONFIG); +} + #endif /* !defined(__ASSEMBLY__) */ #endif /* _ASM_BMIPS_H */ |