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Merge branch 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/drm-intel into drm-fixes

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* 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/drm-intel:
  drm/i915: do not enable RC6p on Sandy Bridge
  drm/i915: gen7: Disable the RHWO optimization as it can cause GPU hangs.
  drm/i915: gen7: work around a system hang on IVB
  drm/i915: gen7: Implement an L3 caching workaround.
  drm/i915: gen7: implement rczunit workaround
This commit is contained in:
Dave Airlie 2012-02-22 08:02:17 +00:00
commit bb757a7e25
2 changed files with 37 additions and 2 deletions
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15
drivers/gpu/drm/i915/i915_reg.h
View file

@ -3028,6 +3028,20 @@
#define DISP_TILE_SURFACE_SWIZZLING (1<<13)
#define DISP_FBC_WM_DIS (1<<15)
/* GEN7 chicken */
#define GEN7_COMMON_SLICE_CHICKEN1 0x7010
# define GEN7_CSC1_RHWO_OPT_DISABLE_IN_RCC ((1<<10) | (1<<26))
#define GEN7_L3CNTLREG1 0xB01C
#define GEN7_WA_FOR_GEN7_L3_CONTROL 0x3C4FFF8C
#define GEN7_L3_CHICKEN_MODE_REGISTER 0xB030
#define GEN7_WA_L3_CHICKEN_MODE 0x20000000
/* WaCatErrorRejectionIssue */
#define GEN7_SQ_CHICKEN_MBCUNIT_CONFIG 0x9030
#define GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB (1<<11)
/* PCH */
/* south display engine interrupt */
@ -3618,6 +3632,7 @@
#define GT_FIFO_NUM_RESERVED_ENTRIES 20
#define GEN6_UCGCTL2 0x9404
# define GEN6_RCZUNIT_CLOCK_GATE_DISABLE (1 << 13)
# define GEN6_RCPBUNIT_CLOCK_GATE_DISABLE (1 << 12)
# define GEN6_RCCUNIT_CLOCK_GATE_DISABLE (1 << 11)

24
drivers/gpu/drm/i915/intel_display.c
View file

@ -8184,8 +8184,8 @@ void gen6_enable_rps(struct drm_i915_private *dev_priv)
I915_WRITE(GEN6_RC6pp_THRESHOLD, 64000); /* unused */
if (intel_enable_rc6(dev_priv->dev))
rc6_mask = GEN6_RC_CTL_RC6p_ENABLE |
GEN6_RC_CTL_RC6_ENABLE;
rc6_mask = GEN6_RC_CTL_RC6_ENABLE |
(IS_GEN7(dev_priv->dev)) ? GEN6_RC_CTL_RC6p_ENABLE : 0;
I915_WRITE(GEN6_RC_CONTROL,
rc6_mask |
@ -8463,12 +8463,32 @@ static void ivybridge_init_clock_gating(struct drm_device *dev)
I915_WRITE(WM2_LP_ILK, 0);
I915_WRITE(WM1_LP_ILK, 0);
/* According to the spec, bit 13 (RCZUNIT) must be set on IVB.
* This implements the WaDisableRCZUnitClockGating workaround.
*/
I915_WRITE(GEN6_UCGCTL2, GEN6_RCZUNIT_CLOCK_GATE_DISABLE);
I915_WRITE(ILK_DSPCLK_GATE, IVB_VRHUNIT_CLK_GATE);
I915_WRITE(IVB_CHICKEN3,
CHICKEN3_DGMG_REQ_OUT_FIX_DISABLE |
CHICKEN3_DGMG_DONE_FIX_DISABLE);
/* Apply the WaDisableRHWOOptimizationForRenderHang workaround. */
I915_WRITE(GEN7_COMMON_SLICE_CHICKEN1,
GEN7_CSC1_RHWO_OPT_DISABLE_IN_RCC);
/* WaApplyL3ControlAndL3ChickenMode requires those two on Ivy Bridge */
I915_WRITE(GEN7_L3CNTLREG1,
GEN7_WA_FOR_GEN7_L3_CONTROL);
I915_WRITE(GEN7_L3_CHICKEN_MODE_REGISTER,
GEN7_WA_L3_CHICKEN_MODE);
/* This is required by WaCatErrorRejectionIssue */
I915_WRITE(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG,
I915_READ(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) |
GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB);
for_each_pipe(pipe) {
I915_WRITE(DSPCNTR(pipe),
I915_READ(DSPCNTR(pipe)) |