From: Oscar Mateo <oscar.mateo@xxxxxxxxx>
In Gen11, only even numbered "logical" VDBoxes are hooked up to an SFC
(Scaler & Format Converter) unit. We will use this information to decide
when the SFC units need to be reset.
BSpec: 20189
Signed-off-by: Tomasz Lis <tomasz.lis@xxxxxxxxx>
Signed-off-by: Oscar Mateo <oscar.mateo@xxxxxxxxx>
Signed-off-by: Michel Thierry <michel.thierry@xxxxxxxxx>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@xxxxxxxxx>
Cc: Michel Thierry <michel.thierry@xxxxxxxxx>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@xxxxxxxxx>
Cc: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_device_info.c | 9 +++++++++
drivers/gpu/drm/i915/intel_device_info.h | 3 +++
2 files changed, 12 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_device_info.c b/drivers/gpu/drm/i915/intel_device_info.c
index 89ed3a8..e2454a7 100644
--- a/drivers/gpu/drm/i915/intel_device_info.c
+++ b/drivers/gpu/drm/i915/intel_device_info.c
@@ -881,6 +881,7 @@ void intel_device_info_init_mmio(struct drm_i915_private *dev_priv)
{
struct intel_device_info *info = mkwrite_device_info(dev_priv);
u32 media_fuse;
+ uint logical_vdbox = 0;
unsigned int i;
if (INTEL_GEN(dev_priv) < 11)
@@ -900,7 +901,15 @@ void intel_device_info_init_mmio(struct drm_i915_private *dev_priv)
if (!(BIT(i) & info->vdbox_enable)) {
info->ring_mask &= ~ENGINE_MASK(_VCS(i));
DRM_DEBUG_DRIVER("vcs%u fused off\n", i);
+ continue;
}
+
+ /*
+ * In Gen11, only even numbered logical VDBOXes are
+ * hooked up to an SFC (Scaler & Format Converter) unit.
+ */
+ if (logical_vdbox++ % 2 == 0)
+ info->vdbox_sfc_access |= BIT(i);
}
DRM_DEBUG_DRIVER("vebox enable: %04x\n", info->vebox_enable);
diff --git a/drivers/gpu/drm/i915/intel_device_info.h b/drivers/gpu/drm/i915/intel_device_info.h
index b4c2c4e..1eda80f 100644
--- a/drivers/gpu/drm/i915/intel_device_info.h
+++ b/drivers/gpu/drm/i915/intel_device_info.h
@@ -189,6 +189,9 @@ struct intel_device_info {
u8 vdbox_enable;
u8 vebox_enable;
+ /* Media engine access to SFC per instance */
+ u8 vdbox_sfc_access;
+
struct color_luts {
u16 degamma_lut_size;
u16 gamma_lut_size;
--
2.7.4
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