diff options
| author | Vandana Salve <vsalve@nvidia.com> | 2013-11-09 00:45:58 +0530 |
|---|---|---|
| committer | Krishna Reddy <vdumpa@nvidia.com> | 2013-11-13 15:57:12 -0800 |
| commit | 7097bb2b1e8ccbb2c6b92ad3d40c7e294cc2f5be (patch) | |
| tree | ee20c414b40dd8963a28dbd2ad6067361f7b6bf0 /drivers/base | |
| parent | 72009667f7620da7578e3a665ffdc69757db09f0 (diff) | |
drivers: cma: add dma_contiguous_stats()
Added the dma_contiguous_stats() to get CMA
stats such as base and size from the given dev
bug 1279160
Change-Id: I066e35e7fda140f8613a3d4364464587d3bd251d
Signed-off-by: Vandana Salve <vsalve@nvidia.com>
Reviewed-on: http://git-master/r/328412
GVS: Gerrit_Virtual_Submit
Reviewed-by: Krishna Reddy <vdumpa@nvidia.com>
Tested-by: Krishna Reddy <vdumpa@nvidia.com>
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/dma-contiguous.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/base/dma-contiguous.c b/drivers/base/dma-contiguous.c index 0ca54421ce97..5e3bf5607746 100644 --- a/drivers/base/dma-contiguous.c +++ b/drivers/base/dma-contiguous.c @@ -388,3 +388,23 @@ bool dma_release_from_contiguous(struct device *dev, struct page *pages, return true; } + +int dma_get_contiguous_stats(struct device *dev, + struct dma_contiguous_stats *stats) +{ + struct cma *cma = NULL; + + if ((!dev) || !stats) + return -EINVAL; + + if (dev->cma_area) + cma = dev->cma_area; + + if (!cma) + return -EINVAL; + + stats->size = (cma->count) << PAGE_SHIFT; + stats->base = (cma->base_pfn) << PAGE_SHIFT; + + return 0; +} |