drm/i915: Correct SFC_DONE register offset
authorMatt Roper <matthew.d.roper@intel.com>
Wed, 28 Jul 2021 23:34:11 +0000 (16:34 -0700)
committerRodrigo Vivi <rodrigo.vivi@intel.com>
Tue, 3 Aug 2021 11:08:56 +0000 (07:08 -0400)
The register offset for SFC_DONE was missing a '0' at the end, causing
us to read from a non-existent register address.  We only use this
register in error state dumps so the mistake hasn't caused any real
problems, but fixing it will hopefully make the error state dumps a bit
more useful for debugging.

Fixes: e50dbdbfd9fb ("drm/i915/tgl: Add SFC instdone to error state")
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210728233411.2365788-1-matthew.d.roper@intel.com
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
(cherry picked from commit 82929a2140eb99f1f1d21855f3f580e70d7abdd8)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
drivers/gpu/drm/i915/i915_reg.h

index 94fde5c..41186c1 100644 (file)
@@ -422,7 +422,7 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg)
 #define   GEN12_HCP_SFC_LOCK_ACK_BIT           REG_BIT(1)
 #define   GEN12_HCP_SFC_USAGE_BIT                      REG_BIT(0)
 
-#define GEN12_SFC_DONE(n)              _MMIO(0x1cc00 + (n) * 0x100)
+#define GEN12_SFC_DONE(n)              _MMIO(0x1cc000 + (n) * 0x1000)
 #define GEN12_SFC_DONE_MAX             4
 
 #define RING_PP_DIR_BASE(base)         _MMIO((base) + 0x228)