Deepak Nibade af5d2d208a gpu: nvgpu: API to access fb memory ...

Add IOCTL API NVGPU_DBG_GPU_IOCTL_ACCESS_FB_MEMORY
to read/write fb/vidmem memory

Interface will accept dmabuf_fd of the buffer in vidmem,
offset into the buffer to access, temporary buffer
to copy data across API, size of read/write and
command indicating either read or write operation

API will first parse all the inputs, and then call
gk20a_vidbuf_access_memory() to complete fb access

gk20a_vidbuf_access_memory() will then just use
gk20a_mem_rd_n() or gk20a_mem_wr_n() depending
on the command issued

Bug 1804714
Jira DNVGPU-192

Change-Id: Iba3c42410abe12c2884d3b603fa33d27782e4c56
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/1255556
(cherry picked from commit 2c49a8a79d93fc526adbf6f808484fa9a3fa2498)
Reviewed-on: http://git-master/r/1260471
GVS: Gerrit_Virtual_Submit
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>

2016-11-30 02:18:17 -08:00

..

nvgpu.h

gpu: nvgpu: API to access fb memory

2016-11-30 02:18:17 -08:00