On Thu, Nov 14, 2013 at 07:09:48PM +0200, Ville Syrjälä wrote: > On Thu, Nov 14, 2013 at 02:54:10PM +0200, Mika Kuoppala wrote: > > ville.syrj...@linux.intel.com writes: > > > > > From: Ville Syrjälä <ville.syrj...@linux.intel.com> > > > > > > On VLV GTFIFODBG has more bits. Just report them all. > > > > > > Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com> > > > --- > > > drivers/gpu/drm/i915/i915_reg.h | 5 ++++- > > > drivers/gpu/drm/i915/intel_uncore.c | 5 ++--- > > > 2 files changed, 6 insertions(+), 4 deletions(-) > > > > > > diff --git a/drivers/gpu/drm/i915/i915_reg.h > > > b/drivers/gpu/drm/i915/i915_reg.h > > > index 849e595..e8f47de 100644 > > > --- a/drivers/gpu/drm/i915/i915_reg.h > > > +++ b/drivers/gpu/drm/i915/i915_reg.h > > > @@ -4852,7 +4852,10 @@ > > > #define FORCEWAKE_MT_ENABLE (1<<5) > > > > > > #define GTFIFODBG 0x120000 > > > -#define GT_FIFO_CPU_ERROR_MASK 7 > > > +#define GT_FIFO_SBDROPERR (1<<6) > > > +#define GT_FIFO_BLOBDROPERR (1<<5) > > > +#define GT_FIFO_SB_READ_ABORTERR (1<<4) > > > +#define GT_FIFO_DROPERR (1<<3) > > > #define GT_FIFO_OVFERR (1<<2) > > > #define GT_FIFO_IAWRERR (1<<1) > > > #define GT_FIFO_IARDERR (1<<0) > > > diff --git a/drivers/gpu/drm/i915/intel_uncore.c > > > b/drivers/gpu/drm/i915/intel_uncore.c > > > index 0edabbb..a9849ab 100644 > > > --- a/drivers/gpu/drm/i915/intel_uncore.c > > > +++ b/drivers/gpu/drm/i915/intel_uncore.c > > > @@ -121,9 +121,8 @@ static void gen6_gt_check_fifodbg(struct > > > drm_i915_private *dev_priv) > > > u32 gtfifodbg; > > > > > > gtfifodbg = __raw_i915_read32(dev_priv, GTFIFODBG); > > > - if (WARN(gtfifodbg & GT_FIFO_CPU_ERROR_MASK, > > > - "MMIO read or write has been dropped %x\n", gtfifodbg)) > > > - __raw_i915_write32(dev_priv, GTFIFODBG, GT_FIFO_CPU_ERROR_MASK); > > > + if (WARN(gtfifodbg, "GT wake FIFO error 0x%x\n", gtfifodbg)) > > > > I think you still need mask, there are ro fields != 0 in the same > > register. > > Which bits? VLV has those seven low bits, others just three low bits > AFAICS.
OK, so the problem is that bspec seems to list some bogus junk for these registers. The gunit register HAS is what I used to write these patches. Someone with a VLV on their hands should double check whether real hardware agrees with the gunit register HAS. Any volunteers? -- Ville Syrjälä Intel OTC _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
