[Intel-gfx] [PATCH v2 5/5] drm/i915: Always use 9 bits of the LPC bridge device ID for PCH detection
ville.syrjala at linux.intel.com
ville.syrjala at linux.intel.com
Wed Jun 21 17:49:44 UTC 2017
From: Ville Syrjälä <ville.syrjala at linux.intel.com>
Make the code less confusiong by always using the top 9 bits of the
LPC bridge device ID to detect the PCH type. We need to add a bit of
new code for WPT, and we need to adjust the KBP ID as well. All the
other pre-CNP IDs are fine as is.
The virtualization cases I think are fine. These P2X and P3X IDs
actually just look like the old PIIX4 and PIIX3 IDs to me. Not sure
why they're not called PIIX3/4 though. The qemu one has a comment
saying the full ID is 0x2918 which is fine with 9 bits.
v2: Keep the CNP ID as 0xa300 (DK)
Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan at intel.com>
Reviewed-by: Jani Nikula <jani.nikula at intel.com>
Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan at intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
drivers/gpu/drm/i915/i915_drv.c | 35 ++++++++++++++++++++---------------
drivers/gpu/drm/i915/i915_drv.h | 13 ++++++++-----
2 files changed, 28 insertions(+), 20 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 1681be8d21f6..bfb39047f5e1 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -173,29 +173,25 @@ static void intel_detect_pch(struct drm_i915_private *dev_priv)
while ((pch = pci_get_class(PCI_CLASS_BRIDGE_ISA << 8, pch))) {
if (pch->vendor == PCI_VENDOR_ID_INTEL) {
unsigned short id = pch->device & INTEL_PCH_DEVICE_ID_MASK;
- unsigned short id_ext = pch->device &
- INTEL_PCH_DEVICE_ID_MASK_EXT;
+
+ dev_priv->pch_id = id;
if (id == INTEL_PCH_IBX_DEVICE_ID_TYPE) {
- dev_priv->pch_id = id;
dev_priv->pch_type = PCH_IBX;
DRM_DEBUG_KMS("Found Ibex Peak PCH\n");
WARN_ON(!IS_GEN5(dev_priv));
} else if (id == INTEL_PCH_CPT_DEVICE_ID_TYPE) {
- dev_priv->pch_id = id;
dev_priv->pch_type = PCH_CPT;
DRM_DEBUG_KMS("Found CougarPoint PCH\n");
WARN_ON(!IS_GEN6(dev_priv) &&
!IS_IVYBRIDGE(dev_priv));
} else if (id == INTEL_PCH_PPT_DEVICE_ID_TYPE) {
/* PantherPoint is CPT compatible */
- dev_priv->pch_id = id;
dev_priv->pch_type = PCH_CPT;
DRM_DEBUG_KMS("Found PantherPoint PCH\n");
WARN_ON(!IS_GEN6(dev_priv) &&
!IS_IVYBRIDGE(dev_priv));
} else if (id == INTEL_PCH_LPT_DEVICE_ID_TYPE) {
- dev_priv->pch_id = id;
dev_priv->pch_type = PCH_LPT;
DRM_DEBUG_KMS("Found LynxPoint PCH\n");
WARN_ON(!IS_HASWELL(dev_priv) &&
@@ -203,39 +199,49 @@ static void intel_detect_pch(struct drm_i915_private *dev_priv)
WARN_ON(IS_HSW_ULT(dev_priv) ||
IS_BDW_ULT(dev_priv));
} else if (id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) {
- dev_priv->pch_id = id;
dev_priv->pch_type = PCH_LPT;
DRM_DEBUG_KMS("Found LynxPoint LP PCH\n");
WARN_ON(!IS_HASWELL(dev_priv) &&
!IS_BROADWELL(dev_priv));
WARN_ON(!IS_HSW_ULT(dev_priv) &&
!IS_BDW_ULT(dev_priv));
+ } else if (id == INTEL_PCH_WPT_DEVICE_ID_TYPE) {
+ /* WildcatPoint is LPT compatible */
+ dev_priv->pch_type = PCH_LPT;
+ DRM_DEBUG_KMS("Found WildcatPoint PCH\n");
+ WARN_ON(!IS_HASWELL(dev_priv) &&
+ !IS_BROADWELL(dev_priv));
+ WARN_ON(IS_HSW_ULT(dev_priv) ||
+ IS_BDW_ULT(dev_priv));
+ } else if (id == INTEL_PCH_WPT_LP_DEVICE_ID_TYPE) {
+ /* WildcatPoint is LPT compatible */
+ dev_priv->pch_type = PCH_LPT;
+ DRM_DEBUG_KMS("Found WildcatPoint LP PCH\n");
+ WARN_ON(!IS_HASWELL(dev_priv) &&
+ !IS_BROADWELL(dev_priv));
+ WARN_ON(!IS_HSW_ULT(dev_priv) &&
+ !IS_BDW_ULT(dev_priv));
} else if (id == INTEL_PCH_SPT_DEVICE_ID_TYPE) {
- dev_priv->pch_id = id;
dev_priv->pch_type = PCH_SPT;
DRM_DEBUG_KMS("Found SunrisePoint PCH\n");
WARN_ON(!IS_SKYLAKE(dev_priv) &&
!IS_KABYLAKE(dev_priv));
- } else if (id_ext == INTEL_PCH_SPT_LP_DEVICE_ID_TYPE) {
- dev_priv->pch_id = id_ext;
+ } else if (id == INTEL_PCH_SPT_LP_DEVICE_ID_TYPE) {
dev_priv->pch_type = PCH_SPT;
DRM_DEBUG_KMS("Found SunrisePoint LP PCH\n");
WARN_ON(!IS_SKYLAKE(dev_priv) &&
!IS_KABYLAKE(dev_priv));
} else if (id == INTEL_PCH_KBP_DEVICE_ID_TYPE) {
- dev_priv->pch_id = id;
dev_priv->pch_type = PCH_KBP;
DRM_DEBUG_KMS("Found KabyPoint PCH\n");
WARN_ON(!IS_SKYLAKE(dev_priv) &&
!IS_KABYLAKE(dev_priv));
} else if (id == INTEL_PCH_CNP_DEVICE_ID_TYPE) {
- dev_priv->pch_id = id;
dev_priv->pch_type = PCH_CNP;
DRM_DEBUG_KMS("Found CannonPoint PCH\n");
WARN_ON(!IS_CANNONLAKE(dev_priv) &&
!IS_COFFEELAKE(dev_priv));
- } else if (id_ext == INTEL_PCH_CNP_LP_DEVICE_ID_TYPE) {
- dev_priv->pch_id = id_ext;
+ } else if (id == INTEL_PCH_CNP_LP_DEVICE_ID_TYPE) {
dev_priv->pch_type = PCH_CNP;
DRM_DEBUG_KMS("Found CannonPoint LP PCH\n");
WARN_ON(!IS_CANNONLAKE(dev_priv) &&
@@ -247,7 +253,6 @@ static void intel_detect_pch(struct drm_i915_private *dev_priv)
PCI_SUBVENDOR_ID_REDHAT_QUMRANET &&
pch->subsystem_device ==
PCI_SUBDEVICE_ID_QEMU)) {
- dev_priv->pch_id = id;
dev_priv->pch_type =
intel_virt_detect_pch(dev_priv);
} else
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 1b97eb098ffe..212b29e38470 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2996,16 +2996,17 @@ intel_info(const struct drm_i915_private *dev_priv)
#define HAS_POOLED_EU(dev_priv) ((dev_priv)->info.has_pooled_eu)
-#define INTEL_PCH_DEVICE_ID_MASK 0xff00
-#define INTEL_PCH_DEVICE_ID_MASK_EXT 0xff80
+#define INTEL_PCH_DEVICE_ID_MASK 0xff80
#define INTEL_PCH_IBX_DEVICE_ID_TYPE 0x3b00
#define INTEL_PCH_CPT_DEVICE_ID_TYPE 0x1c00
#define INTEL_PCH_PPT_DEVICE_ID_TYPE 0x1e00
#define INTEL_PCH_LPT_DEVICE_ID_TYPE 0x8c00
#define INTEL_PCH_LPT_LP_DEVICE_ID_TYPE 0x9c00
+#define INTEL_PCH_WPT_DEVICE_ID_TYPE 0x8c80
+#define INTEL_PCH_WPT_LP_DEVICE_ID_TYPE 0x9c80
#define INTEL_PCH_SPT_DEVICE_ID_TYPE 0xA100
#define INTEL_PCH_SPT_LP_DEVICE_ID_TYPE 0x9D00
-#define INTEL_PCH_KBP_DEVICE_ID_TYPE 0xA200
+#define INTEL_PCH_KBP_DEVICE_ID_TYPE 0xA280
#define INTEL_PCH_CNP_DEVICE_ID_TYPE 0xA300
#define INTEL_PCH_CNP_LP_DEVICE_ID_TYPE 0x9D80
#define INTEL_PCH_P2X_DEVICE_ID_TYPE 0x7100
@@ -3020,9 +3021,11 @@ intel_info(const struct drm_i915_private *dev_priv)
#define HAS_PCH_SPT(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_SPT)
#define HAS_PCH_LPT(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_LPT)
#define HAS_PCH_LPT_LP(dev_priv) \
- ((dev_priv)->pch_id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE)
+ ((dev_priv)->pch_id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE || \
+ (dev_priv)->pch_id == INTEL_PCH_WPT_LP_DEVICE_ID_TYPE)
#define HAS_PCH_LPT_H(dev_priv) \
- ((dev_priv)->pch_id == INTEL_PCH_LPT_DEVICE_ID_TYPE)
+ ((dev_priv)->pch_id == INTEL_PCH_LPT_DEVICE_ID_TYPE || \
+ (dev_priv)->pch_id == INTEL_PCH_WPT_DEVICE_ID_TYPE)
#define HAS_PCH_CPT(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_CPT)
#define HAS_PCH_IBX(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_IBX)
#define HAS_PCH_NOP(dev_priv) (INTEL_PCH_TYPE(dev_priv) == PCH_NOP)
--
2.13.0
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