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drm/i915: implement WaDisablePSDDualDispatchEnable on IVB & VLV

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Workaround for dual port PS dispatch on GT1.

v2: pull in register definition & offset handling
v3: use IVB GT1 macro to get the right regs (Ben)
v4: add for VLV too (Ben)
v5: don't read the reg, it's masked so we'll only enable the one extra bit (Chris)
v6: use a _GT2 suffix for the second reg (Chris)

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Antti Koskipää <antti.koskipaa@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Jesse Barnes 2012-10-25 12:15:45 -07:00 committed by Daniel Vetter
parent 2d809570c8
commit 12f3382bc0
3 changed files with 17 additions and 0 deletions
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1
drivers/gpu/drm/i915/i915_drv.c
View File

@ -1134,6 +1134,7 @@ static bool IS_DISPLAYREG(u32 reg)
switch (reg) {
case GEN7_ROW_CHICKEN2:
case GEN7_HALF_SLICE_CHICKEN1:
return false;
default:
break;

5
drivers/gpu/drm/i915/i915_reg.h
View File

@ -4305,6 +4305,11 @@
#define GEN7_L3LOG_BASE 0xB070
#define GEN7_L3LOG_SIZE 0x80
#define GEN7_HALF_SLICE_CHICKEN1 0xe100 /* IVB GT1 + VLV */
#define GEN7_HALF_SLICE_CHICKEN1_GT2 0xf100
#define GEN7_MAX_PS_THREAD_DEP (8<<12)
#define GEN7_PSD_SINGLE_PORT_DISPATCH_ENABLE (1<<3)
#define GEN7_ROW_CHICKEN2 0xe4f4
#define GEN7_ROW_CHICKEN2_GT2 0xf4f4
#define DOP_CLOCK_GATING_DISABLE (1<<0)

11
drivers/gpu/drm/i915/intel_pm.c
View File

@ -3592,6 +3592,14 @@ static void ivybridge_init_clock_gating(struct drm_device *dev)
CHICKEN3_DGMG_REQ_OUT_FIX_DISABLE |
CHICKEN3_DGMG_DONE_FIX_DISABLE);
/* WaDisablePSDDualDispatchEnable */
if (IS_IVB_GT1(dev))
I915_WRITE(GEN7_HALF_SLICE_CHICKEN1,
_MASKED_BIT_ENABLE(GEN7_PSD_SINGLE_PORT_DISPATCH_ENABLE));
else
I915_WRITE(GEN7_HALF_SLICE_CHICKEN1_GT2,
_MASKED_BIT_ENABLE(GEN7_PSD_SINGLE_PORT_DISPATCH_ENABLE));
/* Apply the WaDisableRHWOOptimizationForRenderHang workaround. */
I915_WRITE(GEN7_COMMON_SLICE_CHICKEN1,
GEN7_CSC1_RHWO_OPT_DISABLE_IN_RCC);
@ -3679,6 +3687,9 @@ static void valleyview_init_clock_gating(struct drm_device *dev)
CHICKEN3_DGMG_REQ_OUT_FIX_DISABLE |
CHICKEN3_DGMG_DONE_FIX_DISABLE);
I915_WRITE(GEN7_HALF_SLICE_CHICKEN1,
_MASKED_BIT_ENABLE(GEN7_PSD_SINGLE_PORT_DISPATCH_ENABLE));
/* Apply the WaDisableRHWOOptimizationForRenderHang workaround. */
I915_WRITE(GEN7_COMMON_SLICE_CHICKEN1,
GEN7_CSC1_RHWO_OPT_DISABLE_IN_RCC);