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author | Andrey Smirnov <andrew.smirnov@gmail.com> | 2018-05-17 13:58:30 -0700 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2018-05-18 08:13:19 +0200 |
commit | f9f233130b1bc0c28d4c5a754a4d5266f3fb3eb9 (patch) | |
tree | 3c5c0af73b02839d3ed056da2f2b4223ca6bb932 /arch/arm/cpu/mmu.c | |
parent | f42c864d3ee3bdc876f7fe6142a71d36a3bb597a (diff) | |
download | barebox-f9f233130b1bc0c28d4c5a754a4d5266f3fb3eb9.tar.gz barebox-f9f233130b1bc0c28d4c5a754a4d5266f3fb3eb9.tar.xz |
ARM: mmu: Share code between dma_alloc_*() functions
Code of dma_alloc_coherent() and dma_alloc_writecombine() is almost
identical with exception of the flags passed to undelying call to
__remap_range(). Move commong code into a shared subroutine and
convert both functions to use it.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/cpu/mmu.c')
-rw-r--r-- | arch/arm/cpu/mmu.c | 22 |
1 files changed, 8 insertions, 14 deletions
diff --git a/arch/arm/cpu/mmu.c b/arch/arm/cpu/mmu.c index fc4046e85c..7d4432b989 100644 --- a/arch/arm/cpu/mmu.c +++ b/arch/arm/cpu/mmu.c @@ -500,7 +500,7 @@ void mmu_disable(void) __mmu_cache_off(); } -void *dma_alloc_coherent(size_t size, dma_addr_t *dma_handle) +static void *dma_alloc(size_t size, dma_addr_t *dma_handle, uint32_t pte_flags) { void *ret; @@ -511,25 +511,19 @@ void *dma_alloc_coherent(size_t size, dma_addr_t *dma_handle) dma_inv_range((unsigned long)ret, (unsigned long)ret + size); - __remap_range(ret, size, pte_flags_uncached); + __remap_range(ret, size, pte_flags); return ret; } -void *dma_alloc_writecombine(size_t size, dma_addr_t *dma_handle) +void *dma_alloc_coherent(size_t size, dma_addr_t *dma_handle) { - void *ret; - - size = PAGE_ALIGN(size); - ret = xmemalign(PAGE_SIZE, size); - if (dma_handle) - *dma_handle = (dma_addr_t)ret; - - dma_inv_range((unsigned long)ret, (unsigned long)ret + size); - - __remap_range(ret, size, pte_flags_wc); + return dma_alloc(size, dma_handle, pte_flags_uncached); +} - return ret; +void *dma_alloc_writecombine(size_t size, dma_addr_t *dma_handle) +{ + return dma_alloc(size, dma_handle, pte_flags_wc); } unsigned long virt_to_phys(volatile void *virt) |