diff options
| author | Michel Thierry <michel.thierry@intel.com> | 2019-11-28 07:40:05 +0530 |
|---|---|---|
| committer | Tvrtko Ursulin <tvrtko.ursulin@intel.com> | 2019-11-29 11:48:20 +0000 |
| commit | ff690b2111ba591abf1ea157c543a4e9f91b309e (patch) | |
| tree | 536d3b24181d0dc7918563773f102b8bff3db163 /drivers/gpu/drm/i915/gt/intel_workarounds.c | |
| parent | 952d1a6b0f839e0b5aba33b4799d5bc679a5e60c (diff) | |
drm/i915/tgl: Implement Wa_1604555607
Implement Wa_1604555607 (set the DS pairing timer to 128 cycles).
FF_MODE2 is part of the register state context, that's why it is
implemented here.
At TGL A0 stepping, FF_MODE2 register read back is broken, hence
disabling the WA verification.
v2: Rebased on top of the WA refactoring (Oscar)
v3: Correctly add to ctx_workarounds_init (Michel)
v4:
uncore read is used [Tvrtko]
Macros as used for MASK definition [Chris]
v5:
Skip the Wa_1604555607 verification [Ram]
i915 ptr retrieved from engine. [Tvrtko]
v6:
Added wa_add as a wrapper for __wa_add [Chris]
wa_add is directly called instead of new wrapper [tvrtko]
BSpec: 19363
HSDES: 1604555607
Signed-off-by: Michel Thierry <michel.thierry@intel.com>
Signed-off-by: Ramalingam C <ramlingam.c@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> [v5]
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191128021005.3350-1-ramalingam.c@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/gt/intel_workarounds.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/intel_workarounds.c | 29 |
1 files changed, 25 insertions, 4 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c index 0c6d398980ba..195ccf7db272 100644 --- a/drivers/gpu/drm/i915/gt/intel_workarounds.c +++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c @@ -147,21 +147,27 @@ static void _wa_add(struct i915_wa_list *wal, const struct i915_wa *wa) } } -static void -wa_write_masked_or(struct i915_wa_list *wal, i915_reg_t reg, u32 mask, - u32 val) +static void wa_add(struct i915_wa_list *wal, i915_reg_t reg, u32 mask, + u32 val, u32 read_mask) { struct i915_wa wa = { .reg = reg, .mask = mask, .val = val, - .read = mask, + .read = read_mask, }; _wa_add(wal, &wa); } static void +wa_write_masked_or(struct i915_wa_list *wal, i915_reg_t reg, u32 mask, + u32 val) +{ + wa_add(wal, reg, mask, val, mask); +} + +static void wa_masked_en(struct i915_wa_list *wal, i915_reg_t reg, u32 val) { wa_write_masked_or(wal, reg, val, _MASKED_BIT_ENABLE(val)); @@ -569,9 +575,24 @@ static void icl_ctx_workarounds_init(struct intel_engine_cs *engine, static void tgl_ctx_workarounds_init(struct intel_engine_cs *engine, struct i915_wa_list *wal) { + u32 val; + /* Wa_1409142259:tgl */ WA_SET_BIT_MASKED(GEN11_COMMON_SLICE_CHICKEN3, GEN12_DISABLE_CPS_AWARE_COLOR_PIPE); + + /* Wa_1604555607:tgl */ + val = intel_uncore_read(engine->uncore, FF_MODE2); + val &= ~FF_MODE2_TDS_TIMER_MASK; + val |= FF_MODE2_TDS_TIMER_128; + /* + * FIXME: FF_MODE2 register is not readable till TGL B0. We can + * enable verification of WA from the later steppings, which enables + * the read of FF_MODE2. + */ + wa_add(wal, FF_MODE2, FF_MODE2_TDS_TIMER_MASK, val, + IS_TGL_REVID(engine->i915, TGL_REVID_A0, TGL_REVID_A0) ? 0 : + FF_MODE2_TDS_TIMER_MASK); } static void |