drm/i915: split out intel_pch.[ch] from i915_drv.[ch]

Abstract the rather self-contained piece of code from i915_drv.[ch]. No
functional changes.

Cc: José Roberto de Souza <jose.souza@intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190807120415.17917-1-jani.nikula@intel.com

1 files changed, 0 insertions, 194 deletions

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 9a6059e0bbe5..e4f63cfd528b 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -145,200 +145,6 @@ __i915_printk(struct drm_i915_private *dev_priv, const char *level,
 	}
 }
 
-/* Map PCH device id to PCH type, or PCH_NONE if unknown. */
-static enum intel_pch
-intel_pch_type(const struct drm_i915_private *dev_priv, unsigned short id)
-{
-	switch (id) {
-	case INTEL_PCH_IBX_DEVICE_ID_TYPE:
-		DRM_DEBUG_KMS("Found Ibex Peak PCH\n");
-		WARN_ON(!IS_GEN(dev_priv, 5));
-		return PCH_IBX;
-	case INTEL_PCH_CPT_DEVICE_ID_TYPE:
-		DRM_DEBUG_KMS("Found CougarPoint PCH\n");
-		WARN_ON(!IS_GEN(dev_priv, 6) && !IS_IVYBRIDGE(dev_priv));
-		return PCH_CPT;
-	case INTEL_PCH_PPT_DEVICE_ID_TYPE:
-		DRM_DEBUG_KMS("Found PantherPoint PCH\n");
-		WARN_ON(!IS_GEN(dev_priv, 6) && !IS_IVYBRIDGE(dev_priv));
-		/* PantherPoint is CPT compatible */
-		return PCH_CPT;
-	case INTEL_PCH_LPT_DEVICE_ID_TYPE:
-		DRM_DEBUG_KMS("Found LynxPoint PCH\n");
-		WARN_ON(!IS_HASWELL(dev_priv) && !IS_BROADWELL(dev_priv));
-		WARN_ON(IS_HSW_ULT(dev_priv) || IS_BDW_ULT(dev_priv));
-		return PCH_LPT;
-	case INTEL_PCH_LPT_LP_DEVICE_ID_TYPE:
-		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));
-		return PCH_LPT;
-	case INTEL_PCH_WPT_DEVICE_ID_TYPE:
-		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));
-		/* WildcatPoint is LPT compatible */
-		return PCH_LPT;
-	case INTEL_PCH_WPT_LP_DEVICE_ID_TYPE:
-		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));
-		/* WildcatPoint is LPT compatible */
-		return PCH_LPT;
-	case INTEL_PCH_SPT_DEVICE_ID_TYPE:
-		DRM_DEBUG_KMS("Found SunrisePoint PCH\n");
-		WARN_ON(!IS_SKYLAKE(dev_priv) && !IS_KABYLAKE(dev_priv));
-		return PCH_SPT;
-	case INTEL_PCH_SPT_LP_DEVICE_ID_TYPE:
-		DRM_DEBUG_KMS("Found SunrisePoint LP PCH\n");
-		WARN_ON(!IS_SKYLAKE(dev_priv) && !IS_KABYLAKE(dev_priv));
-		return PCH_SPT;
-	case INTEL_PCH_KBP_DEVICE_ID_TYPE:
-		DRM_DEBUG_KMS("Found Kaby Lake PCH (KBP)\n");
-		WARN_ON(!IS_SKYLAKE(dev_priv) && !IS_KABYLAKE(dev_priv) &&
-			!IS_COFFEELAKE(dev_priv));
-		/* KBP is SPT compatible */
-		return PCH_SPT;
-	case INTEL_PCH_CNP_DEVICE_ID_TYPE:
-		DRM_DEBUG_KMS("Found Cannon Lake PCH (CNP)\n");
-		WARN_ON(!IS_CANNONLAKE(dev_priv) && !IS_COFFEELAKE(dev_priv));
-		return PCH_CNP;
-	case INTEL_PCH_CNP_LP_DEVICE_ID_TYPE:
-		DRM_DEBUG_KMS("Found Cannon Lake LP PCH (CNP-LP)\n");
-		WARN_ON(!IS_CANNONLAKE(dev_priv) && !IS_COFFEELAKE(dev_priv));
-		return PCH_CNP;
-	case INTEL_PCH_CMP_DEVICE_ID_TYPE:
-		DRM_DEBUG_KMS("Found Comet Lake PCH (CMP)\n");
-		WARN_ON(!IS_COFFEELAKE(dev_priv));
-		/* CometPoint is CNP Compatible */
-		return PCH_CNP;
-	case INTEL_PCH_ICP_DEVICE_ID_TYPE:
-		DRM_DEBUG_KMS("Found Ice Lake PCH\n");
-		WARN_ON(!IS_ICELAKE(dev_priv));
-		return PCH_ICP;
-	case INTEL_PCH_MCC_DEVICE_ID_TYPE:
-	case INTEL_PCH_MCC2_DEVICE_ID_TYPE:
-		DRM_DEBUG_KMS("Found Mule Creek Canyon PCH\n");
-		WARN_ON(!IS_ELKHARTLAKE(dev_priv));
-		return PCH_MCC;
-	case INTEL_PCH_TGP_DEVICE_ID_TYPE:
-		DRM_DEBUG_KMS("Found Tiger Lake LP PCH\n");
-		WARN_ON(!IS_TIGERLAKE(dev_priv));
-		return PCH_TGP;
-	default:
-		return PCH_NONE;
-	}
-}
-
-static bool intel_is_virt_pch(unsigned short id,
-			      unsigned short svendor, unsigned short sdevice)
-{
-	return (id == INTEL_PCH_P2X_DEVICE_ID_TYPE ||
-		id == INTEL_PCH_P3X_DEVICE_ID_TYPE ||
-		(id == INTEL_PCH_QEMU_DEVICE_ID_TYPE &&
-		 svendor == PCI_SUBVENDOR_ID_REDHAT_QUMRANET &&
-		 sdevice == PCI_SUBDEVICE_ID_QEMU));
-}
-
-static unsigned short
-intel_virt_detect_pch(const struct drm_i915_private *dev_priv)
-{
-	unsigned short id = 0;
-
-	/*
-	 * In a virtualized passthrough environment we can be in a
-	 * setup where the ISA bridge is not able to be passed through.
-	 * In this case, a south bridge can be emulated and we have to
-	 * make an educated guess as to which PCH is really there.
-	 */
-
-	if (IS_TIGERLAKE(dev_priv))
-		id = INTEL_PCH_TGP_DEVICE_ID_TYPE;
-	else if (IS_ELKHARTLAKE(dev_priv))
-		id = INTEL_PCH_MCC_DEVICE_ID_TYPE;
-	else if (IS_ICELAKE(dev_priv))
-		id = INTEL_PCH_ICP_DEVICE_ID_TYPE;
-	else if (IS_CANNONLAKE(dev_priv) || IS_COFFEELAKE(dev_priv))
-		id = INTEL_PCH_CNP_DEVICE_ID_TYPE;
-	else if (IS_KABYLAKE(dev_priv) || IS_SKYLAKE(dev_priv))
-		id = INTEL_PCH_SPT_DEVICE_ID_TYPE;
-	else if (IS_HSW_ULT(dev_priv) || IS_BDW_ULT(dev_priv))
-		id = INTEL_PCH_LPT_LP_DEVICE_ID_TYPE;
-	else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
-		id = INTEL_PCH_LPT_DEVICE_ID_TYPE;
-	else if (IS_GEN(dev_priv, 6) || IS_IVYBRIDGE(dev_priv))
-		id = INTEL_PCH_CPT_DEVICE_ID_TYPE;
-	else if (IS_GEN(dev_priv, 5))
-		id = INTEL_PCH_IBX_DEVICE_ID_TYPE;
-
-	if (id)
-		DRM_DEBUG_KMS("Assuming PCH ID %04x\n", id);
-	else
-		DRM_DEBUG_KMS("Assuming no PCH\n");
-
-	return id;
-}
-
-static void intel_detect_pch(struct drm_i915_private *dev_priv)
-{
-	struct pci_dev *pch = NULL;
-
-	/*
-	 * The reason to probe ISA bridge instead of Dev31:Fun0 is to
-	 * make graphics device passthrough work easy for VMM, that only
-	 * need to expose ISA bridge to let driver know the real hardware
-	 * underneath. This is a requirement from virtualization team.
-	 *
-	 * In some virtualized environments (e.g. XEN), there is irrelevant
-	 * ISA bridge in the system. To work reliably, we should scan trhough
-	 * all the ISA bridge devices and check for the first match, instead
-	 * of only checking the first one.
-	 */
-	while ((pch = pci_get_class(PCI_CLASS_BRIDGE_ISA << 8, pch))) {
-		unsigned short id;
-		enum intel_pch pch_type;
-
-		if (pch->vendor != PCI_VENDOR_ID_INTEL)
-			continue;
-
-		id = pch->device & INTEL_PCH_DEVICE_ID_MASK;
-
-		pch_type = intel_pch_type(dev_priv, id);
-		if (pch_type != PCH_NONE) {
-			dev_priv->pch_type = pch_type;
-			dev_priv->pch_id = id;
-			break;
-		} else if (intel_is_virt_pch(id, pch->subsystem_vendor,
-					 pch->subsystem_device)) {
-			id = intel_virt_detect_pch(dev_priv);
-			pch_type = intel_pch_type(dev_priv, id);
-
-			/* Sanity check virtual PCH id */
-			if (WARN_ON(id && pch_type == PCH_NONE))
-				id = 0;
-
-			dev_priv->pch_type = pch_type;
-			dev_priv->pch_id = id;
-			break;
-		}
-	}
-
-	/*
-	 * Use PCH_NOP (PCH but no South Display) for PCH platforms without
-	 * display.
-	 */
-	if (pch && !HAS_DISPLAY(dev_priv)) {
-		DRM_DEBUG_KMS("Display disabled, reverting to NOP PCH\n");
-		dev_priv->pch_type = PCH_NOP;
-		dev_priv->pch_id = 0;
-	}
-
-	if (!pch)
-		DRM_DEBUG_KMS("No PCH found.\n");
-
-	pci_dev_put(pch);
-}
-
 static int i915_get_bridge_dev(struct drm_i915_private *dev_priv)
 {
 	int domain = pci_domain_nr(dev_priv->drm.pdev->bus);