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drm/i915/icl: WaModifyGamTlbPartitioning

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Adjust default GAM TLB partitioning for performance reasons.

v2: Only touch the bits that we really need
v3: Rebased on top of the WA refactoring
v4:
  - Added References (Mika)
  - Rebased
v5:
  - Rebased
  - C, not lisp (Chris)
  - Correct reference number (Mika)

References: HSDES#220160670
Signed-off-by: Oscar Mateo <oscar.mateo@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Signed-off-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1525814984-20039-6-git-send-email-oscar.mateo@intel.com
This commit is contained in:
Oscar Mateo 2018-05-08 14:29:27 -07:00 committed by Mika Kuoppala
parent d41bab6879
commit f4a357140a
2 changed files with 10 additions and 0 deletions
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5
drivers/gpu/drm/i915/i915_reg.h
View File

@ -8263,6 +8263,11 @@ enum {
#define GEN10_DFR_RATIO_EN_AND_CHICKEN _MMIO(0x9550)
#define DFR_DISABLE (1 << 9)
#define GEN11_GACB_PERF_CTRL _MMIO(0x4B80)
#define GEN11_HASH_CTRL_MASK (0x3 << 12 | 0xf << 0)
#define GEN11_HASH_CTRL_BIT0 (1 << 0)
#define GEN11_HASH_CTRL_BIT4 (1 << 12)
/* IVYBRIDGE DPF */
#define GEN7_L3CDERRST1(slice) _MMIO(0xB008 + (slice) * 0x200) /* L3CD Error Status 1 */
#define GEN7_L3CDERRST1_ROW_MASK (0x7ff<<14)

5
drivers/gpu/drm/i915/intel_workarounds.c
View File

@ -715,6 +715,11 @@ static void icl_gt_workarounds_apply(struct drm_i915_private *dev_priv)
I915_WRITE(GEN11_GLBLINVL,
(I915_READ(GEN11_GLBLINVL) & ~GEN11_BANK_HASH_ADDR_EXCL_MASK) |
GEN11_BANK_HASH_ADDR_EXCL_BIT0);
/* WaModifyGamTlbPartitioning:icl */
I915_WRITE(GEN11_GACB_PERF_CTRL,
(I915_READ(GEN11_GACB_PERF_CTRL) & ~GEN11_HASH_CTRL_MASK) |
GEN11_HASH_CTRL_BIT0 | GEN11_HASH_CTRL_BIT4);
}
void intel_gt_workarounds_apply(struct drm_i915_private *dev_priv)