drm/i915/gvt: Disable compression workaround for Gen9

With enabling this workaround, can observe GPU hang issue on Gen9. As
currently host side doesn't have this workaround, disable it from GVT
side.

v2:
- Fix indent error.(Zhenyu)

Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>

diff --git a/drivers/gpu/drm/i915/gvt/handlers.c b/drivers/gpu/drm/i915/gvt/handlers.c
index c995e540ff96e1f8a18a9232de2b26794fa03aa2..0ffd696545927277200d8b2332a024168672c5c5 100644 (file)
--- a/drivers/gpu/drm/i915/gvt/handlers.c
+++ b/drivers/gpu/drm/i915/gvt/handlers.c
@@ -1366,18 +1366,28 @@ static int skl_misc_ctl_write(struct intel_vgpu *vgpu, unsigned int offset,
                void *p_data, unsigned int bytes)
 {
        struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv;
-       i915_reg_t reg = {.reg = offset};
+       u32 v = *(u32 *)p_data;
+
+       if (!IS_SKYLAKE(dev_priv) && !IS_KABYLAKE(dev_priv))
+               return intel_vgpu_default_mmio_write(vgpu,
+                               offset, p_data, bytes);
 
        switch (offset) {
        case 0x4ddc:
-               vgpu_vreg(vgpu, offset) = 0x8000003c;
-               /* WaCompressedResourceSamplerPbeMediaNewHashMode:skl */
-               I915_WRITE(reg, vgpu_vreg(vgpu, offset));
+               /* bypass WaCompressedResourceSamplerPbeMediaNewHashMode */
+               vgpu_vreg(vgpu, offset) = v & ~(1 << 31);
                break;
        case 0x42080:
-               vgpu_vreg(vgpu, offset) = 0x8000;
-               /* WaCompressedResourceDisplayNewHashMode:skl */
-               I915_WRITE(reg, vgpu_vreg(vgpu, offset));
+               /* bypass WaCompressedResourceDisplayNewHashMode */
+               vgpu_vreg(vgpu, offset) = v & ~(1 << 15);
+               break;
+       case 0xe194:
+               /* bypass WaCompressedResourceSamplerPbeMediaNewHashMode */
+               vgpu_vreg(vgpu, offset) = v & ~(1 << 8);
+               break;
+       case 0x7014:
+               /* bypass WaCompressedResourceSamplerPbeMediaNewHashMode */
+               vgpu_vreg(vgpu, offset) = v & ~(1 << 13);
                break;
        default:
                return -EINVAL;
@@ -1634,7 +1644,8 @@ static int init_generic_mmio_info(struct intel_gvt *gvt)
        MMIO_DFH(GAM_ECOCHK, D_ALL, F_CMD_ACCESS, NULL, NULL);
        MMIO_DFH(GEN7_COMMON_SLICE_CHICKEN1, D_ALL, F_MODE_MASK | F_CMD_ACCESS,
                NULL, NULL);
-       MMIO_DFH(COMMON_SLICE_CHICKEN2, D_ALL, F_MODE_MASK | F_CMD_ACCESS, NULL, NULL);
+       MMIO_DFH(COMMON_SLICE_CHICKEN2, D_ALL, F_MODE_MASK | F_CMD_ACCESS, NULL,
+                skl_misc_ctl_write);
        MMIO_DFH(0x9030, D_ALL, F_CMD_ACCESS, NULL, NULL);
        MMIO_DFH(0x20a0, D_ALL, F_CMD_ACCESS, NULL, NULL);
        MMIO_DFH(0x2420, D_ALL, F_CMD_ACCESS, NULL, NULL);
@@ -2568,7 +2579,8 @@ static int init_broadwell_mmio_info(struct intel_gvt *gvt)
        MMIO_D(0x6e570, D_BDW_PLUS);
        MMIO_D(0x65f10, D_BDW_PLUS);
 
-       MMIO_DFH(0xe194, D_BDW_PLUS, F_MODE_MASK | F_CMD_ACCESS, NULL, NULL);
+       MMIO_DFH(0xe194, D_BDW_PLUS, F_MODE_MASK | F_CMD_ACCESS, NULL,
+                skl_misc_ctl_write);
        MMIO_DFH(0xe188, D_BDW_PLUS, F_MODE_MASK | F_CMD_ACCESS, NULL, NULL);
        MMIO_DFH(HALF_SLICE_CHICKEN2, D_BDW_PLUS, F_MODE_MASK | F_CMD_ACCESS, NULL, NULL);
        MMIO_DFH(0x2580, D_BDW_PLUS, F_MODE_MASK | F_CMD_ACCESS, NULL, NULL);