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drm/i915/gvt: Revert "drm/i915/gvt: Refine the snapshort range of I915 MCHBAR to optimize gvt-g boot time"

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This reverts commit f74a6d9a2c.

BXT needs to access 0x141000-0x1417ff register to obtain the dram info.
But after the snapshot range of I915_MCHBAR is refined in f74a6d9a2c,
it only initializes the range of 0x144000-0x147fff for VGPU and then
causes that the guest GPU can't get the initialized value for dram
detection on BXT.

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
This commit is contained in:
Zhao Yakui 2019-04-25 17:04:54 +08:00 committed by Zhenyu Wang
parent 930c8dfea4
commit 8631fef7f2
2 changed files with 1 additions and 4 deletions
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2
drivers/gpu/drm/i915/gvt/handlers.c
View File

@ -3303,7 +3303,7 @@ void intel_gvt_clean_mmio_info(struct intel_gvt *gvt)
/* Special MMIO blocks. */
static struct gvt_mmio_block mmio_blocks[] = {
{D_SKL_PLUS, _MMIO(CSR_MMIO_START_RANGE), 0x3000, NULL, NULL},
{D_ALL, MCHBAR_MIRROR_REG_BASE, 0x4000, NULL, NULL},
{D_ALL, _MMIO(MCHBAR_MIRROR_BASE_SNB), 0x40000, NULL, NULL},
{D_ALL, _MMIO(VGT_PVINFO_PAGE), VGT_PVINFO_SIZE,
pvinfo_mmio_read, pvinfo_mmio_write},
{D_ALL, LGC_PALETTE(PIPE_A, 0), 1024, NULL, NULL},

3
drivers/gpu/drm/i915/gvt/reg.h
View File

@ -126,7 +126,4 @@
#define RING_GFX_MODE(base) _MMIO((base) + 0x29c)
#define VF_GUARDBAND _MMIO(0x83a4)
/* define the effective range of MCHBAR register on Sandybridge+ */
#define MCHBAR_MIRROR_REG_BASE _MMIO(MCHBAR_MIRROR_BASE_SNB + 0x4000)
#endif