[Intel-gfx] [PATCH] drm/i915/perf: fix b counter register whitelist on haswell

[Lionel Landwerlin]

This register is incorrectly listed as SNB/IVB only in the documentation. It
turns out it's useful for one configuration on HSW (Compute Metrics Basic).

Fixes: f89823c2122 "drm/i915/perf: Implement I915_PERF_ADD/REMOVE_CONFIG interface"
Cc: Stable <stable at vger.kernel.org>
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin at intel.com>
---
 drivers/gpu/drm/i915/i915_perf.c | 3 ++-
 drivers/gpu/drm/i915/i915_reg.h  | 2 ++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c
index 2741b1bc7095..fbe3ac1e3e86 100644
--- a/drivers/gpu/drm/i915/i915_perf.c
+++ b/drivers/gpu/drm/i915/i915_perf.c
@@ -3019,7 +3019,8 @@ static bool gen7_is_valid_b_counter_addr(struct drm_i915_private *dev_priv, u32
 		(addr >= i915_mmio_reg_offset(OAREPORTTRIG1) &&
 		 addr <= i915_mmio_reg_offset(OAREPORTTRIG8)) ||
 		(addr >= i915_mmio_reg_offset(OACEC0_0) &&
-		 addr <= i915_mmio_reg_offset(OACEC7_1));
+		 addr <= i915_mmio_reg_offset(OACEC7_1)) ||
+		addr == i915_mmio_reg_offset(NOASELECT);
 }
 
 static bool gen7_is_valid_mux_addr(struct drm_i915_private *dev_priv, u32 addr)
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 8c12ee2f89a9..4e991b69b117 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -1155,6 +1155,8 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg)
 
 #define HSW_MBVID2_MISR0	_MMIO(0x9EC0)
 
+#define NOASELECT		_MMIO(0x236C)
+
 /* NOA (Gen8+) */
 #define NOA_CONFIG(i)	    _MMIO(0x0D0C + (i) * 4)
 
-- 
2.16.1