linux-stable.git/drivers/gpu/drm/amd/amdgpu/amdgpu_umr.h, branch linux-6.2.y Linux kernel stable tree drm/amd/amdgpu: New debugfs interface for MMIO registers (v5) 2021-09-01T20:55:11+00:00 Tom St Denis tom.stdenis@amd.com 2021-08-20T18:03:12+00:00 37df9560cd3e7cb23f28ab04514f0a2ab08b3cea This new debugfs interface uses an IOCTL interface in order to pass along state information like SRBM and GRBM bank switching. This new interface also allows a full 32-bit MMIO address range which the previous didn't. With this new design we have room to grow the flexibility of the file as need be. (v2): Move read/write to .read/.write, fix style, add comment for IOCTL data structure (v3): C style comments (v4): use u32 in struct and remove offset variable (v5): Drop flag clearing in op function, use 0xFFFFFFFF for broadcast instead of 0x3FF, use mutex for op/ioctl. Signed-off-by: Tom St Denis <tom.stdenis@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> 
This new debugfs interface uses an IOCTL interface in order to pass
along state information like SRBM and GRBM bank switching.  This
new interface also allows a full 32-bit MMIO address range which
the previous didn't.  With this new design we have room to grow
the flexibility of the file as need be.

(v2): Move read/write to .read/.write, fix style, add comment
      for IOCTL data structure

(v3): C style comments

(v4): use u32 in struct and remove offset variable

(v5): Drop flag clearing in op function, use 0xFFFFFFFF for broadcast
      instead of 0x3FF, use mutex for op/ioctl.

Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>