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authorAndreas Bießmann <andreas.devel@googlemail.com>2015-02-06 23:06:39 +0100
committerAndreas Bießmann <andreas.devel@googlemail.com>2015-02-17 22:52:39 +0100
commitdbdb5abd070163f59901884c672b49c25b1aeea9 (patch)
tree10dbb1e6358d178953613d5b08daba9958df03a6 /arch/avr32
parent5745f8c4fd5807becf7f246625e153388293aedc (diff)
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avr32: use dlmalloc for DMA buffers
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
Diffstat (limited to 'arch/avr32')
-rw-r--r--arch/avr32/include/asm/dma-mapping.h7
-rw-r--r--arch/avr32/lib/board.c51
2 files changed, 6 insertions, 52 deletions
diff --git a/arch/avr32/include/asm/dma-mapping.h b/arch/avr32/include/asm/dma-mapping.h
index dbdd2fe..1cde827 100644
--- a/arch/avr32/include/asm/dma-mapping.h
+++ b/arch/avr32/include/asm/dma-mapping.h
@@ -14,7 +14,12 @@ enum dma_data_direction {
DMA_TO_DEVICE = 1,
DMA_FROM_DEVICE = 2,
};
-extern void *dma_alloc_coherent(size_t len, unsigned long *handle);
+
+static inline void *dma_alloc_coherent(size_t len, unsigned long *handle)
+{
+ *handle = (unsigned long)memalign(ARCH_DMA_MINALIGN, len);
+ return (void *)*handle;
+}
static inline unsigned long dma_map_single(volatile void *vaddr, size_t len,
enum dma_data_direction dir)
diff --git a/arch/avr32/lib/board.c b/arch/avr32/lib/board.c
index bf0997f..7d13ac5 100644
--- a/arch/avr32/lib/board.c
+++ b/arch/avr32/lib/board.c
@@ -45,50 +45,6 @@ int cpu_mmc_init(bd_t *bd)
return atmel_mci_init((void *)ATMEL_BASE_MMCI);
}
-#ifdef CONFIG_SYS_DMA_ALLOC_LEN
-#include <asm/arch/cacheflush.h>
-#include <asm/io.h>
-
-static unsigned long dma_alloc_start;
-static unsigned long dma_alloc_end;
-static unsigned long dma_alloc_brk;
-
-static void dma_alloc_init(void)
-{
- unsigned long monitor_addr;
-
- monitor_addr = CONFIG_SYS_MONITOR_BASE + gd->reloc_off;
- dma_alloc_end = monitor_addr - CONFIG_SYS_MALLOC_LEN;
- dma_alloc_start = dma_alloc_end - CONFIG_SYS_DMA_ALLOC_LEN;
- dma_alloc_brk = dma_alloc_start;
-
- printf("DMA: Using memory from 0x%08lx to 0x%08lx\n",
- dma_alloc_start, dma_alloc_end);
-
- invalidate_dcache_range((unsigned long)cached(dma_alloc_start),
- dma_alloc_end);
-}
-
-void *dma_alloc_coherent(size_t len, unsigned long *handle)
-{
- unsigned long paddr = dma_alloc_brk;
-
- if (dma_alloc_brk + len > dma_alloc_end)
- return NULL;
-
- dma_alloc_brk = ((paddr + len + CONFIG_SYS_DCACHE_LINESZ - 1)
- & ~(CONFIG_SYS_DCACHE_LINESZ - 1));
-
- *handle = paddr;
- return uncached(paddr);
-}
-#else
-static inline void dma_alloc_init(void)
-{
-
-}
-#endif
-
static int init_baudrate(void)
{
gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
@@ -180,12 +136,6 @@ void board_init_f(ulong board_type)
/* Reserve memory for malloc() */
addr -= CONFIG_SYS_MALLOC_LEN;
-#ifdef CONFIG_SYS_DMA_ALLOC_LEN
- /* Reserve DMA memory (must be cache aligned) */
- addr &= ~(CONFIG_SYS_DCACHE_LINESZ - 1);
- addr -= CONFIG_SYS_DMA_ALLOC_LEN;
-#endif
-
#ifdef CONFIG_LCD
#ifdef CONFIG_FB_ADDR
printf("LCD: Frame buffer allocated at preset 0x%08x\n",
@@ -264,7 +214,6 @@ void board_init_r(gd_t *new_gd, ulong dest_addr)
/* The malloc area is right below the monitor image in RAM */
mem_malloc_init(CONFIG_SYS_MONITOR_BASE + gd->reloc_off -
CONFIG_SYS_MALLOC_LEN, CONFIG_SYS_MALLOC_LEN);
- dma_alloc_init();
enable_interrupts();