| Message ID | 20230926215802.10822-1-nirmoy.das@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v2] drm/i915/mtl: Skip MCR ops for ring fault register | expand |
On Tue, Sep 26, 2023 at 11:58:02PM +0200, Nirmoy Das wrote: > On MTL GEN12_RING_FAULT_REG is not replicated so don't > do mcr based operation for this register. > > v2: use MEDIA_VER() instead of GRAPHICS_VER()(Matt). > > Signed-off-by: Nirmoy Das <nirmoy.das@intel.com> > --- > drivers/gpu/drm/i915/gt/intel_gt.c | 13 ++++++++++++- > drivers/gpu/drm/i915/gt/intel_gt_regs.h | 1 + > drivers/gpu/drm/i915/i915_gpu_error.c | 10 +++++++++- > 3 files changed, 22 insertions(+), 2 deletions(-) > > diff --git a/drivers/gpu/drm/i915/gt/intel_gt.c b/drivers/gpu/drm/i915/gt/intel_gt.c > index 93062c35e072..430738607f61 100644 > --- a/drivers/gpu/drm/i915/gt/intel_gt.c > +++ b/drivers/gpu/drm/i915/gt/intel_gt.c > @@ -262,10 +262,21 @@ intel_gt_clear_error_registers(struct intel_gt *gt, > I915_MASTER_ERROR_INTERRUPT); > } > > - if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 50)) { > + /* > + * for media tile this ring fault register is not replicated Nitpicks: s/tile/gt/ and either write it as "For the media GT..." (singular) or "For media GTs..." (plural). Same with the other copy of this comment farther down. > + * so skip doing mcr ops on it. > + */ > + if (MEDIA_VER(i915) == 13 && gt->type == GT_MEDIA) { I guess for now we should probably make this (and the one farther down) a ">=" instead of "==" under the assumption future media versions will do the same in case we get some kind of refresh platform down the road with a slightly higher version number. Aside from those minor tweaks, Reviewed-by: Matt Roper <matthew.d.roper@intel.com> > + intel_uncore_rmw(uncore, XELPMP_RING_FAULT_REG, > + RING_FAULT_VALID, 0); > + intel_uncore_posting_read(uncore, > + XELPMP_RING_FAULT_REG); > + > + } else if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 50)) { > intel_gt_mcr_multicast_rmw(gt, XEHP_RING_FAULT_REG, > RING_FAULT_VALID, 0); > intel_gt_mcr_read_any(gt, XEHP_RING_FAULT_REG); > + > } else if (GRAPHICS_VER(i915) >= 12) { > intel_uncore_rmw(uncore, GEN12_RING_FAULT_REG, RING_FAULT_VALID, 0); > intel_uncore_posting_read(uncore, GEN12_RING_FAULT_REG); > diff --git a/drivers/gpu/drm/i915/gt/intel_gt_regs.h b/drivers/gpu/drm/i915/gt/intel_gt_regs.h > index cca4bac8f8b0..eecd0a87a647 100644 > --- a/drivers/gpu/drm/i915/gt/intel_gt_regs.h > +++ b/drivers/gpu/drm/i915/gt/intel_gt_regs.h > @@ -1084,6 +1084,7 @@ > > #define GEN12_RING_FAULT_REG _MMIO(0xcec4) > #define XEHP_RING_FAULT_REG MCR_REG(0xcec4) > +#define XELPMP_RING_FAULT_REG _MMIO(0xcec4) > #define GEN8_RING_FAULT_ENGINE_ID(x) (((x) >> 12) & 0x7) > #define RING_FAULT_GTTSEL_MASK (1 << 11) > #define RING_FAULT_SRCID(x) (((x) >> 3) & 0xff) > diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c > index f4ebcfb70289..f0b691ea3a6e 100644 > --- a/drivers/gpu/drm/i915/i915_gpu_error.c > +++ b/drivers/gpu/drm/i915/i915_gpu_error.c > @@ -1234,7 +1234,15 @@ static void engine_record_registers(struct intel_engine_coredump *ee) > if (GRAPHICS_VER(i915) >= 6) { > ee->rc_psmi = ENGINE_READ(engine, RING_PSMI_CTL); > > - if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 50)) > + /* > + * for media tile this ring fault register is not replicated > + * so skip doing mcr ops on it. > + */ > + if (MEDIA_VER(i915) == 13 && engine->gt->type == GT_MEDIA) > + ee->fault_reg = intel_uncore_read(engine->uncore, > + XELPMP_RING_FAULT_REG); > + > + else if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 50)) > ee->fault_reg = intel_gt_mcr_read_any(engine->gt, > XEHP_RING_FAULT_REG); > else if (GRAPHICS_VER(i915) >= 12) > -- > 2.41.0 >
Hi Nirmoy, On Tue, Sep 26, 2023 at 11:58:02PM +0200, Nirmoy Das wrote: > On MTL GEN12_RING_FAULT_REG is not replicated so don't > do mcr based operation for this register. > > v2: use MEDIA_VER() instead of GRAPHICS_VER()(Matt). > > Signed-off-by: Nirmoy Das <nirmoy.das@intel.com> This looks very good! > - if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 50)) { > + /* > + * for media tile this ring fault register is not replicated > + * so skip doing mcr ops on it. Can we spare a few more words on "doing mcr ops on it"? Andi
On 9/27/2023 9:04 AM, Andi Shyti wrote: > Hi Nirmoy, > > On Tue, Sep 26, 2023 at 11:58:02PM +0200, Nirmoy Das wrote: >> On MTL GEN12_RING_FAULT_REG is not replicated so don't >> do mcr based operation for this register. >> >> v2: use MEDIA_VER() instead of GRAPHICS_VER()(Matt). >> >> Signed-off-by: Nirmoy Das <nirmoy.das@intel.com> > This looks very good! My tired brain took it as end of mail. > >> - if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 50)) { >> + /* >> + * for media tile this ring fault register is not replicated >> + * so skip doing mcr ops on it. > Can we spare a few more words on "doing mcr ops on it"? Sent out https://patchwork.freedesktop.org/patch/559759/?series=124325&rev=1 to improve this. Thanks, Nirmoy > > Andi
diff --git a/drivers/gpu/drm/i915/gt/intel_gt.c b/drivers/gpu/drm/i915/gt/intel_gt.c index 93062c35e072..430738607f61 100644 --- a/drivers/gpu/drm/i915/gt/intel_gt.c +++ b/drivers/gpu/drm/i915/gt/intel_gt.c @@ -262,10 +262,21 @@ intel_gt_clear_error_registers(struct intel_gt *gt, I915_MASTER_ERROR_INTERRUPT); } - if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 50)) { + /* + * for media tile this ring fault register is not replicated + * so skip doing mcr ops on it. + */ + if (MEDIA_VER(i915) == 13 && gt->type == GT_MEDIA) { + intel_uncore_rmw(uncore, XELPMP_RING_FAULT_REG, + RING_FAULT_VALID, 0); + intel_uncore_posting_read(uncore, + XELPMP_RING_FAULT_REG); + + } else if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 50)) { intel_gt_mcr_multicast_rmw(gt, XEHP_RING_FAULT_REG, RING_FAULT_VALID, 0); intel_gt_mcr_read_any(gt, XEHP_RING_FAULT_REG); + } else if (GRAPHICS_VER(i915) >= 12) { intel_uncore_rmw(uncore, GEN12_RING_FAULT_REG, RING_FAULT_VALID, 0); intel_uncore_posting_read(uncore, GEN12_RING_FAULT_REG); diff --git a/drivers/gpu/drm/i915/gt/intel_gt_regs.h b/drivers/gpu/drm/i915/gt/intel_gt_regs.h index cca4bac8f8b0..eecd0a87a647 100644 --- a/drivers/gpu/drm/i915/gt/intel_gt_regs.h +++ b/drivers/gpu/drm/i915/gt/intel_gt_regs.h @@ -1084,6 +1084,7 @@ #define GEN12_RING_FAULT_REG _MMIO(0xcec4) #define XEHP_RING_FAULT_REG MCR_REG(0xcec4) +#define XELPMP_RING_FAULT_REG _MMIO(0xcec4) #define GEN8_RING_FAULT_ENGINE_ID(x) (((x) >> 12) & 0x7) #define RING_FAULT_GTTSEL_MASK (1 << 11) #define RING_FAULT_SRCID(x) (((x) >> 3) & 0xff) diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c index f4ebcfb70289..f0b691ea3a6e 100644 --- a/drivers/gpu/drm/i915/i915_gpu_error.c +++ b/drivers/gpu/drm/i915/i915_gpu_error.c @@ -1234,7 +1234,15 @@ static void engine_record_registers(struct intel_engine_coredump *ee) if (GRAPHICS_VER(i915) >= 6) { ee->rc_psmi = ENGINE_READ(engine, RING_PSMI_CTL); - if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 50)) + /* + * for media tile this ring fault register is not replicated + * so skip doing mcr ops on it. + */ + if (MEDIA_VER(i915) == 13 && engine->gt->type == GT_MEDIA) + ee->fault_reg = intel_uncore_read(engine->uncore, + XELPMP_RING_FAULT_REG); + + else if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 50)) ee->fault_reg = intel_gt_mcr_read_any(engine->gt, XEHP_RING_FAULT_REG); else if (GRAPHICS_VER(i915) >= 12)
On MTL GEN12_RING_FAULT_REG is not replicated so don't do mcr based operation for this register. v2: use MEDIA_VER() instead of GRAPHICS_VER()(Matt). Signed-off-by: Nirmoy Das <nirmoy.das@intel.com> --- drivers/gpu/drm/i915/gt/intel_gt.c | 13 ++++++++++++- drivers/gpu/drm/i915/gt/intel_gt_regs.h | 1 + drivers/gpu/drm/i915/i915_gpu_error.c | 10 +++++++++- 3 files changed, 22 insertions(+), 2 deletions(-)