Am 08.02.2018 um 10:09 schrieb Michel Dänzer:
On 2018-02-08 09:32 AM, Chunming Zhou wrote:
it will be used to check if the driver needs swiotlb

Change-Id: Idbe47af8f12032d4803bb3d47273e807f19169c3
Signed-off-by: Chunming Zhou <david1.z...@amd.com>
Reviewed-by: Monk Liu <monk....@amd.com>
---
  include/drm/drm_cache.h | 13 +++++++++++++
  1 file changed, 13 insertions(+)

diff --git a/include/drm/drm_cache.h b/include/drm/drm_cache.h
index beab0f0d0cfb..442c9ba63d03 100644
--- a/include/drm/drm_cache.h
+++ b/include/drm/drm_cache.h
@@ -39,6 +39,19 @@ void drm_clflush_pages(struct page *pages[], unsigned long 
num_pages);
  void drm_clflush_sg(struct sg_table *st);
  void drm_clflush_virt_range(void *addr, unsigned long length);
+static inline u64 drm_get_max_iomem(void)
+{
+       struct resource *tmp;
+       u64 max_iomem = 0;
+
+       for (tmp = iomem_resource.child; tmp; tmp = tmp->sibling) {
+               max_iomem = max(max_iomem,  tmp->end);
+       }
+
+       return max_iomem;
+}
I don't think this needs to be an inline function, does it?

Well it is defined in a header, so it must be inline because of this.

But if you know a good place, we could also move it into some C file.

Christian.
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