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msm: camera: smmu: Enhance debug capability for camera memmgr

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Improve debugging infrastructure and logging for memory related
issues. There are scenarios where the fd returned after ion_alloc
exists in camera smmu table as being mapped [stale entry].
On such scenarios, this change will return a specific error code to
userspace. The change also propagates the mapped size back to
user space.

CRs-Fixed: 2663114
Change-Id: Ia797b65d1e8ded58dec5b01df07d73262c4cfa95
Signed-off-by: Karthik Anantha Ram <kartanan@codeaurora.org>
This commit is contained in:
Karthik Anantha Ram 2020-03-10 15:37:33 -07:00 • committed by Gerrit - the friendly Code Review server
commit ec23ff584a
4 changed files with 107 additions and 21 deletions
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4
include/uapi/camera/media/cam_req_mgr.h
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@ -343,12 +343,12 @@ struct cam_mem_alloc_out_params {
/**
* struct cam_mem_map_out_params
* @buf_handle: buffer handle
* @reserved: reserved for future
* @size: size of the buffer being mapped
* @vaddr: virtual address pointer
*/
struct cam_mem_map_out_params {
__u32 buf_handle;
__u32 reserved;
__u32 size;
__u64 vaddr;
};