[Intel-gfx] [PATCH] drm/i915/tgl: Fix stepping WA matching
Srivatsa, Anusha
anusha.srivatsa at intel.com
Thu Aug 27 20:48:56 UTC 2020
> -----Original Message-----
> From: Intel-gfx <intel-gfx-bounces at lists.freedesktop.org> On Behalf Of Souza,
> Jose
> Sent: Tuesday, August 25, 2020 12:49 PM
> To: intel-gfx at lists.freedesktop.org
> Cc: Bai, Guangyao <guangyao.bai at intel.com>; Lee, Penne Y
> <penne.y.lee at intel.com>
> Subject: Re: [Intel-gfx] [PATCH] drm/i915/tgl: Fix stepping WA matching
>
> On Wed, 2020-08-19 at 13:33 -0700, José Roberto de Souza wrote:
> > TGL made stepping a litte mess, workarounds refer to the stepping of
> > the IP(GT or Display) not of the GPU stepping so it would already
> > require the same solution as used in commit 96c5a15f9f39
> > ("drm/i915/kbl: Fix revision ID checks").
> > But to make things even more messy it have a different IP stepping
> > mapping between SKUs and the same stepping revision of GT do not match
> > the same HW between TGL U/Y and regular TGL.
> >
> > So it was required to have 2 different macros to check GT WAs while
> > for Display we are able to use just one macro that uses the right
> > revids table.
> >
> > All TGL workarounds checked and updated accordingly.
> >
> > BSpec: 52890
> > BSpec: 55378
> > BSpec: 44455
> > Cc: Penne Lee <
> > penne.y.lee at intel.com
> > >
> > Cc: Guangyao Bai <
> > guangyao.bai at intel.com
> > >
> > Cc: Matt Roper <
> > matthew.d.roper at intel.com
> > >
> > Signed-off-by: José Roberto de Souza < jose.souza at intel.com
> > >
> > ---
> > .../drm/i915/display/intel_display_power.c | 2 +-
> > drivers/gpu/drm/i915/display/intel_psr.c | 4 +-
> > drivers/gpu/drm/i915/display/intel_sprite.c | 2 +-
> > drivers/gpu/drm/i915/gt/intel_workarounds.c | 24 ++++++++++--
> > drivers/gpu/drm/i915/i915_drv.h | 39 ++++++++++++++++---
> > drivers/gpu/drm/i915/intel_pm.c | 2 +-
> > 6 files changed, 59 insertions(+), 14 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/display/intel_display_power.c
> > b/drivers/gpu/drm/i915/display/intel_display_power.c
> > index 7946c6af4b1e..7277e58b01f1 100644
> > --- a/drivers/gpu/drm/i915/display/intel_display_power.c
> > +++ b/drivers/gpu/drm/i915/display/intel_display_power.c
> > @@ -5263,7 +5263,7 @@ static void tgl_bw_buddy_init(struct
> drm_i915_private *dev_priv)
> > unsigned long abox_mask = INTEL_INFO(dev_priv)->abox_mask;
> > int config, i;
> >
> > - if (IS_TGL_REVID(dev_priv, TGL_REVID_A0, TGL_REVID_B0))
> > + if (IS_TGL_DISP_REVID(dev_priv, TGL_REVID_A0, TGL_REVID_B0))
> > /* Wa_1409767108: tgl */
> > table = wa_1409767108_buddy_page_masks;
> > else
> > diff --git a/drivers/gpu/drm/i915/display/intel_psr.c
> > b/drivers/gpu/drm/i915/display/intel_psr.c
> > index 2b004ee9619c..8a9d0bdde1bf 100644
> > --- a/drivers/gpu/drm/i915/display/intel_psr.c
> > +++ b/drivers/gpu/drm/i915/display/intel_psr.c
> > @@ -555,7 +555,7 @@ static void hsw_activate_psr2(struct intel_dp
> > *intel_dp)
> >
> > if (dev_priv->psr.psr2_sel_fetch_enabled) {
> > /* WA 1408330847 */
> > - if (IS_TGL_REVID(dev_priv, TGL_REVID_A0, TGL_REVID_A0) ||
> > + if (IS_TGL_DISP_REVID(dev_priv, TGL_REVID_A0,
> TGL_REVID_A0) ||
> > IS_RKL_REVID(dev_priv, RKL_REVID_A0, RKL_REVID_A0))
> > intel_de_rmw(dev_priv, CHICKEN_PAR1_1,
> > DIS_RAM_BYPASS_PSR2_MAN_TRACK,
> @@ -1109,7 +1109,7 @@ static
> > void intel_psr_disable_locked(struct intel_dp *intel_dp)
> >
> > /* WA 1408330847 */
> > if (dev_priv->psr.psr2_sel_fetch_enabled &&
> > - (IS_TGL_REVID(dev_priv, TGL_REVID_A0, TGL_REVID_A0) ||
> > + (IS_TGL_DISP_REVID(dev_priv, TGL_REVID_A0, TGL_REVID_A0) ||
> > IS_RKL_REVID(dev_priv, RKL_REVID_A0, RKL_REVID_A0)))
> > intel_de_rmw(dev_priv, CHICKEN_PAR1_1,
> > DIS_RAM_BYPASS_PSR2_MAN_TRACK, 0); diff --git
> > a/drivers/gpu/drm/i915/display/intel_sprite.c
> > b/drivers/gpu/drm/i915/display/intel_sprite.c
> > index c26ca029fc0a..1797a06cfd60 100644
> > --- a/drivers/gpu/drm/i915/display/intel_sprite.c
> > +++ b/drivers/gpu/drm/i915/display/intel_sprite.c
> > @@ -2845,7 +2845,7 @@ static bool
> gen12_plane_supports_mc_ccs(struct
> > drm_i915_private *dev_priv, {
> > /* Wa_14010477008:tgl[a0..c0],rkl[all] */
> > if (IS_ROCKETLAKE(dev_priv) ||
> > - IS_TGL_REVID(dev_priv, TGL_REVID_A0, TGL_REVID_C0))
> > + IS_TGL_DISP_REVID(dev_priv, TGL_REVID_A0, TGL_REVID_C0))
> > return false;
> >
> > return plane_id < PLANE_SPRITE4;
> > diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c
> > b/drivers/gpu/drm/i915/gt/intel_workarounds.c
> > index be5a4685c991..860d6ae1d866 100644
> > --- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
> > +++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
> > @@ -70,6 +70,19 @@ const struct i915_rev_steppings kbl_revids[] = {
> > [7] = { .gt_stepping = KBL_REVID_G0, .disp_stepping = KBL_REVID_C0
> > }, };
> >
> > +const struct i915_rev_steppings tgl_uy_revids[] = {
> > + [0] = { .gt_stepping = TGL_REVID_A0, .disp_stepping = TGL_REVID_A0
> },
> > + [1] = { .gt_stepping = TGL_REVID_B0, .disp_stepping = TGL_REVID_C0
> },
> > + [2] = { .gt_stepping = TGL_REVID_B1, .disp_stepping = TGL_REVID_C0
> },
> > + [3] = { .gt_stepping = TGL_REVID_C0, .disp_stepping = TGL_REVID_D0
> > +}, };
> > +
> > +/* Same GT stepping between tgl_uy_revids and tgl_revids don't mean
> > +the same HW */ const struct i915_rev_steppings tgl_revids[] = {
> > + [0] = { .gt_stepping = TGL_REVID_A0, .disp_stepping = TGL_REVID_A0
Shouldn’t this have display stepping as B0? Or am I missing something?
Anusha
> },
> > + [1] = { .gt_stepping = TGL_REVID_B0, .disp_stepping = TGL_REVID_D0
> > +}, };
> > +
> > static void wa_init_start(struct i915_wa_list *wal, const char *name,
> > const char *engine_name) {
> > wal->name = name;
> > @@ -1219,13 +1232,13 @@ tgl_gt_workarounds_init(struct
> drm_i915_private *i915, struct i915_wa_list *wal)
> > gen12_gt_workarounds_init(i915, wal);
> >
> > /* Wa_1409420604:tgl */
> > - if (IS_TGL_REVID(i915, TGL_REVID_A0, TGL_REVID_A0))
> > + if (IS_TGL_UY_GT_REVID(i915, TGL_REVID_A0, TGL_REVID_A0))
> > wa_write_or(wal,
> > SUBSLICE_UNIT_LEVEL_CLKGATE2,
> > CPSSUNIT_CLKGATE_DIS);
> >
> > /* Wa_1607087056:tgl also know as BUG:1409180338 */
> > - if (IS_TGL_REVID(i915, TGL_REVID_A0, TGL_REVID_A0))
> > + if (IS_TGL_UY_GT_REVID(i915, TGL_REVID_A0, TGL_REVID_A0))
> > wa_write_or(wal,
> > SLICE_UNIT_LEVEL_CLKGATE,
> > L3_CLKGATE_DIS | L3_CR2X_CLKGATE_DIS); @@ -
> 1660,7 +1673,7 @@
> > rcs_engine_wa_init(struct intel_engine_cs *engine, struct i915_wa_list
> > *wal) {
> > struct drm_i915_private *i915 = engine->i915;
> >
> > - if (IS_TGL_REVID(i915, TGL_REVID_A0, TGL_REVID_A0)) {
> > + if (IS_TGL_UY_GT_REVID(i915, TGL_REVID_A0, TGL_REVID_A0)) {
> > /*
> > * Wa_1607138336:tgl
> > * Wa_1607063988:tgl
> > @@ -1697,6 +1710,9 @@ rcs_engine_wa_init(struct intel_engine_cs
> *engine, struct i915_wa_list *wal)
> > wa_masked_en(wal, GEN9_ROW_CHICKEN4,
> GEN12_DISABLE_TDL_PUSH);
> >
> > /*
> > + * TODO: still pending the decision if this WA is permanent for
> > + * plain TGL SKU(not TGL-U/Y).
>
> Wa_14010919138(mentioned one line bellow 'Wa_22010931296:tgl B0+') is
> now permanent so this TODO can be removed.
>
> > + *
> > * Wa_1407928979:tgl A*
> > * Wa_18011464164:tgl B0+
> > * Wa_22010931296:tgl B0+
> > @@ -1718,7 +1734,7 @@ rcs_engine_wa_init(struct intel_engine_cs
> *engine, struct i915_wa_list *wal)
> > GEN8_RC_SEMA_IDLE_MSG_DISABLE);
> > }
> >
> > - if (IS_TIGERLAKE(i915)) {
> > + if (IS_TGL_U(i915) || IS_TGL_Y(i915)) {
> > /* Wa_1606700617:tgl */
> > wa_masked_en(wal,
> > GEN9_CS_DEBUG_MODE1,
> > diff --git a/drivers/gpu/drm/i915/i915_drv.h
> > b/drivers/gpu/drm/i915/i915_drv.h index 8e25dd15a2ec..499eb0a4ad3a
> > 100644
> > --- a/drivers/gpu/drm/i915/i915_drv.h
> > +++ b/drivers/gpu/drm/i915/i915_drv.h
> > @@ -1572,12 +1572,41 @@ extern const struct i915_rev_steppings
> > kbl_revids[]; #define IS_EHL_REVID(p, since, until) \
> > (IS_ELKHARTLAKE(p) && IS_REVID(p, since, until))
> >
> > -#define TGL_REVID_A0 0x0
> > -#define TGL_REVID_B0 0x1
> > -#define TGL_REVID_C0 0x2
> > +enum {
> > + TGL_REVID_A0,
> > + TGL_REVID_B0,
> > + TGL_REVID_B1,
> > + TGL_REVID_C0,
> > + TGL_REVID_D0,
> > +};
> > +
> > +extern const struct i915_rev_steppings tgl_uy_revids[]; extern const
> > +struct i915_rev_steppings tgl_revids[];
> > +
> > +static inline const struct i915_rev_steppings * tgl_revids_get(struct
> > +drm_i915_private *dev_priv) {
> > + if (IS_TGL_U(dev_priv) || IS_TGL_Y(dev_priv))
> > + return tgl_uy_revids;
> > + else
> > + return tgl_revids;
> > +}
> >
> > -#define IS_TGL_REVID(p, since, until) \
> > - (IS_TIGERLAKE(p) && IS_REVID(p, since, until))
> > +#define IS_TGL_DISP_REVID(p, since, until) \
> > + (IS_TIGERLAKE(p) && \
> > + tgl_revids_get(p)->disp_stepping >= (since) && \
> > + tgl_revids_get(p)->disp_stepping <= (until))
> > +
> > +#define IS_TGL_UY_GT_REVID(p, since, until) \
> > + ((IS_TGL_U(p) || IS_TGL_Y(p)) && \
> > + tgl_uy_revids->gt_stepping >= (since) && \
> > + tgl_uy_revids->gt_stepping <= (until))
> > +
> > +#define IS_TGL_GT_REVID(p, since, until) \
> > + (IS_TIGERLAKE(p) && \
> > + !(IS_TGL_U(p) || IS_TGL_Y(p)) && \
> > + tgl_revids->gt_stepping >= (since) && \
> > + tgl_revids->gt_stepping <= (until))
> >
> > #define RKL_REVID_A0 0x0
> > #define RKL_REVID_B0 0x1
> > diff --git a/drivers/gpu/drm/i915/intel_pm.c
> > b/drivers/gpu/drm/i915/intel_pm.c index b4bd19266b8c..34e0d22d456b
> > 100644
> > --- a/drivers/gpu/drm/i915/intel_pm.c
> > +++ b/drivers/gpu/drm/i915/intel_pm.c
> > @@ -7136,7 +7136,7 @@ static void tgl_init_clock_gating(struct
> drm_i915_private *dev_priv)
> > I915_READ(POWERGATE_ENABLE) | vd_pg_enable);
> >
> > /* Wa_1409825376:tgl (pre-prod)*/
> > - if (IS_TGL_REVID(dev_priv, TGL_REVID_A0, TGL_REVID_A0))
> > + if (IS_TGL_DISP_REVID(dev_priv, TGL_REVID_A0, TGL_REVID_B1))
> > I915_WRITE(GEN9_CLKGATE_DIS_3,
> I915_READ(GEN9_CLKGATE_DIS_3) |
> > TGL_VRH_GATING_DIS);
> >
> >
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