This is a note to let you know that I've just added the patch titled
drm/i915: Correct SFC_DONE register offset
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-i915-correct-sfc_done-register-offset.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 9c9c6d0ab08acfe41c9f7efa72c4ad3f133a266b Mon Sep 17 00:00:00 2001
From: Matt Roper <matthew.d.roper@xxxxxxxxx>
Date: Wed, 28 Jul 2021 16:34:11 -0700
Subject: drm/i915: Correct SFC_DONE register offset
From: Matt Roper <matthew.d.roper@xxxxxxxxx>
commit 9c9c6d0ab08acfe41c9f7efa72c4ad3f133a266b upstream.
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@xxxxxxxxxxxxxxx>
Signed-off-by: Matt Roper <matthew.d.roper@xxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20210728233411.2365788-1-matthew.d.roper@xxxxxxxxx
Reviewed-by: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx>
(cherry picked from commit 82929a2140eb99f1f1d21855f3f580e70d7abdd8)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_reg.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -413,7 +413,7 @@ static inline bool i915_mmio_reg_valid(i
#define GEN11_VECS_SFC_USAGE(engine) _MMIO((engine)->mmio_base + 0x2014)
#define GEN11_VECS_SFC_USAGE_BIT (1 << 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)
Patches currently in stable-queue which might be from matthew.d.roper@xxxxxxxxx are
queue-5.10/drm-i915-correct-sfc_done-register-offset.patch
