diff options
author | Ingo Molnar <mingo@elte.hu> | 2008-07-29 00:07:55 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-07-29 00:07:55 +0200 |
commit | cb28a1bbdb4790378e7366d6c9ee1d2340b84f92 (patch) | |
tree | 316436f77dac75335fd2c3ef5f109e71606c50d3 /arch/sh/mm/consistent.c | |
parent | b6d4f7e3ef25beb8c658c97867d98883e69dc544 (diff) | |
parent | f934fb19ef34730263e6afc01e8ec27a8a71470f (diff) |
Merge branch 'linus' into core/generic-dma-coherent
Conflicts:
arch/x86/Kconfig
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/sh/mm/consistent.c')
-rw-r--r-- | arch/sh/mm/consistent.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/arch/sh/mm/consistent.c b/arch/sh/mm/consistent.c index 3095d9581475..b2ce014401b5 100644 --- a/arch/sh/mm/consistent.c +++ b/arch/sh/mm/consistent.c @@ -10,6 +10,7 @@ * for more details. */ #include <linux/mm.h> +#include <linux/platform_device.h> #include <linux/dma-mapping.h> #include <asm/cacheflush.h> #include <asm/addrspace.h> @@ -93,3 +94,32 @@ void dma_cache_sync(struct device *dev, void *vaddr, size_t size, } } EXPORT_SYMBOL(dma_cache_sync); + +int platform_resource_setup_memory(struct platform_device *pdev, + char *name, unsigned long memsize) +{ + struct resource *r; + dma_addr_t dma_handle; + void *buf; + + r = pdev->resource + pdev->num_resources - 1; + if (r->flags) { + pr_warning("%s: unable to find empty space for resource\n", + name); + return -EINVAL; + } + + buf = dma_alloc_coherent(NULL, memsize, &dma_handle, GFP_KERNEL); + if (!buf) { + pr_warning("%s: unable to allocate memory\n", name); + return -ENOMEM; + } + + memset(buf, 0, memsize); + + r->flags = IORESOURCE_MEM; + r->start = dma_handle; + r->end = r->start + memsize - 1; + r->name = name; + return 0; +} |