linux-kernel - [PATCH 5.10 121/135] drm/i915: Correct SFC

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Message-Id: <20210810172959.904639631@linuxfoundation.org>
Date:   Tue, 10 Aug 2021 19:30:55 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Mika Kuoppala <mika.kuoppala@...ux.intel.com>,
        Matt Roper <matthew.d.roper@...el.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>
Subject: [PATCH 5.10 121/135] drm/i915: Correct SFC_DONE register offset

From: Matt Roper <matthew.d.roper@...el.com>

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@...ux.intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@...el.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210728233411.2365788-1-matthew.d.roper@intel.com
Reviewed-by: Mika Kuoppala <mika.kuoppala@...ux.intel.com>
(cherry picked from commit 82929a2140eb99f1f1d21855f3f580e70d7abdd8)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@...el.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 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)