]> git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/commit
drm/i915/gvt: Add GEN9_CLKGATE_DIS_4 to default BXT mmio handler
authorColin Xu <colin.xu@intel.com>
Fri, 14 Sep 2018 07:12:23 +0000 (15:12 +0800)
committerZhenyu Wang <zhenyuw@linux.intel.com>
Tue, 18 Sep 2018 02:37:44 +0000 (10:37 +0800)
commitd817de3bc186c305b8e72a52547df2971c06499d
tree18c66f558cfacec5b12e73e1ac7e5001610c0487
parentdb7c8f1e5f1c1a5e1aaec04e50be6721c1cb4dff
drm/i915/gvt: Add GEN9_CLKGATE_DIS_4 to default BXT mmio handler

Host prints lots of untracked MMIO at 0x4653c when creating linux guest.
"gvt: vgpu 2: untracked MMIO 0004653c len 4"

GEN9_CLKGATE_DIS_4 (0x4653c) is accessed by i915 for gmbus clockgating.
However vgpu doesn't support any clockgating powergating operations
on related mmio access trap so need add it to default handler.
GEN9_CLKGATE_DIS_4 is accessed in bxt_gmbus_clock_gating() which only
applies to GEN9_LP so doens't show the warning on other platforms.

The solution is to add it to default handler init_bxt_mmio_info().

Reviewed-by: He, Min <min.he@intel.com>
Signed-off-by: Colin Xu <colin.xu@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
drivers/gpu/drm/i915/gvt/handlers.c