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path: root/drivers/gpu/drm/i915/soc/intel_pch.c
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Diffstat (limited to 'drivers/gpu/drm/i915/soc/intel_pch.c')
-rw-r--r--drivers/gpu/drm/i915/soc/intel_pch.c290
1 files changed, 0 insertions, 290 deletions
diff --git a/drivers/gpu/drm/i915/soc/intel_pch.c b/drivers/gpu/drm/i915/soc/intel_pch.c
deleted file mode 100644
index 842db43e46c0..000000000000
--- a/drivers/gpu/drm/i915/soc/intel_pch.c
+++ /dev/null
@@ -1,290 +0,0 @@
-// SPDX-License-Identifier: MIT
-/*
- * Copyright 2019 Intel Corporation.
- */
-
-#include "i915_drv.h"
-#include "i915_utils.h"
-#include "intel_pch.h"
-
-/* 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_dbg_kms(&dev_priv->drm, "Found Ibex Peak PCH\n");
- drm_WARN_ON(&dev_priv->drm, GRAPHICS_VER(dev_priv) != 5);
- return PCH_IBX;
- case INTEL_PCH_CPT_DEVICE_ID_TYPE:
- drm_dbg_kms(&dev_priv->drm, "Found CougarPoint PCH\n");
- drm_WARN_ON(&dev_priv->drm,
- GRAPHICS_VER(dev_priv) != 6 && !IS_IVYBRIDGE(dev_priv));
- return PCH_CPT;
- case INTEL_PCH_PPT_DEVICE_ID_TYPE:
- drm_dbg_kms(&dev_priv->drm, "Found PantherPoint PCH\n");
- drm_WARN_ON(&dev_priv->drm,
- GRAPHICS_VER(dev_priv) != 6 && !IS_IVYBRIDGE(dev_priv));
- /* PPT is CPT compatible */
- return PCH_CPT;
- case INTEL_PCH_LPT_DEVICE_ID_TYPE:
- drm_dbg_kms(&dev_priv->drm, "Found LynxPoint PCH\n");
- drm_WARN_ON(&dev_priv->drm,
- !IS_HASWELL(dev_priv) && !IS_BROADWELL(dev_priv));
- drm_WARN_ON(&dev_priv->drm,
- IS_HASWELL_ULT(dev_priv) || IS_BROADWELL_ULT(dev_priv));
- return PCH_LPT;
- case INTEL_PCH_LPT_LP_DEVICE_ID_TYPE:
- drm_dbg_kms(&dev_priv->drm, "Found LynxPoint LP PCH\n");
- drm_WARN_ON(&dev_priv->drm,
- !IS_HASWELL(dev_priv) && !IS_BROADWELL(dev_priv));
- drm_WARN_ON(&dev_priv->drm,
- !IS_HASWELL_ULT(dev_priv) && !IS_BROADWELL_ULT(dev_priv));
- return PCH_LPT;
- case INTEL_PCH_WPT_DEVICE_ID_TYPE:
- drm_dbg_kms(&dev_priv->drm, "Found WildcatPoint PCH\n");
- drm_WARN_ON(&dev_priv->drm,
- !IS_HASWELL(dev_priv) && !IS_BROADWELL(dev_priv));
- drm_WARN_ON(&dev_priv->drm,
- IS_HASWELL_ULT(dev_priv) || IS_BROADWELL_ULT(dev_priv));
- /* WPT is LPT compatible */
- return PCH_LPT;
- case INTEL_PCH_WPT_LP_DEVICE_ID_TYPE:
- drm_dbg_kms(&dev_priv->drm, "Found WildcatPoint LP PCH\n");
- drm_WARN_ON(&dev_priv->drm,
- !IS_HASWELL(dev_priv) && !IS_BROADWELL(dev_priv));
- drm_WARN_ON(&dev_priv->drm,
- !IS_HASWELL_ULT(dev_priv) && !IS_BROADWELL_ULT(dev_priv));
- /* WPT is LPT compatible */
- return PCH_LPT;
- case INTEL_PCH_SPT_DEVICE_ID_TYPE:
- drm_dbg_kms(&dev_priv->drm, "Found SunrisePoint PCH\n");
- drm_WARN_ON(&dev_priv->drm,
- !IS_SKYLAKE(dev_priv) && !IS_KABYLAKE(dev_priv));
- return PCH_SPT;
- case INTEL_PCH_SPT_LP_DEVICE_ID_TYPE:
- drm_dbg_kms(&dev_priv->drm, "Found SunrisePoint LP PCH\n");
- drm_WARN_ON(&dev_priv->drm,
- !IS_SKYLAKE(dev_priv) &&
- !IS_KABYLAKE(dev_priv) &&
- !IS_COFFEELAKE(dev_priv) &&
- !IS_COMETLAKE(dev_priv));
- return PCH_SPT;
- case INTEL_PCH_KBP_DEVICE_ID_TYPE:
- drm_dbg_kms(&dev_priv->drm, "Found Kaby Lake PCH (KBP)\n");
- drm_WARN_ON(&dev_priv->drm,
- !IS_SKYLAKE(dev_priv) &&
- !IS_KABYLAKE(dev_priv) &&
- !IS_COFFEELAKE(dev_priv) &&
- !IS_COMETLAKE(dev_priv));
- /* KBP is SPT compatible */
- return PCH_SPT;
- case INTEL_PCH_CNP_DEVICE_ID_TYPE:
- drm_dbg_kms(&dev_priv->drm, "Found Cannon Lake PCH (CNP)\n");
- drm_WARN_ON(&dev_priv->drm,
- !IS_COFFEELAKE(dev_priv) &&
- !IS_COMETLAKE(dev_priv));
- return PCH_CNP;
- case INTEL_PCH_CNP_LP_DEVICE_ID_TYPE:
- drm_dbg_kms(&dev_priv->drm,
- "Found Cannon Lake LP PCH (CNP-LP)\n");
- drm_WARN_ON(&dev_priv->drm,
- !IS_COFFEELAKE(dev_priv) &&
- !IS_COMETLAKE(dev_priv));
- return PCH_CNP;
- case INTEL_PCH_CMP_DEVICE_ID_TYPE:
- case INTEL_PCH_CMP2_DEVICE_ID_TYPE:
- drm_dbg_kms(&dev_priv->drm, "Found Comet Lake PCH (CMP)\n");
- drm_WARN_ON(&dev_priv->drm,
- !IS_COFFEELAKE(dev_priv) &&
- !IS_COMETLAKE(dev_priv) &&
- !IS_ROCKETLAKE(dev_priv));
- /* CMP is CNP compatible */
- return PCH_CNP;
- case INTEL_PCH_CMP_V_DEVICE_ID_TYPE:
- drm_dbg_kms(&dev_priv->drm, "Found Comet Lake V PCH (CMP-V)\n");
- drm_WARN_ON(&dev_priv->drm,
- !IS_COFFEELAKE(dev_priv) &&
- !IS_COMETLAKE(dev_priv));
- /* CMP-V is based on KBP, which is SPT compatible */
- return PCH_SPT;
- case INTEL_PCH_ICP_DEVICE_ID_TYPE:
- case INTEL_PCH_ICP2_DEVICE_ID_TYPE:
- drm_dbg_kms(&dev_priv->drm, "Found Ice Lake PCH\n");
- drm_WARN_ON(&dev_priv->drm, !IS_ICELAKE(dev_priv));
- return PCH_ICP;
- case INTEL_PCH_MCC_DEVICE_ID_TYPE:
- drm_dbg_kms(&dev_priv->drm, "Found Mule Creek Canyon PCH\n");
- drm_WARN_ON(&dev_priv->drm, !(IS_JASPERLAKE(dev_priv) ||
- IS_ELKHARTLAKE(dev_priv)));
- /* MCC is TGP compatible */
- return PCH_TGP;
- case INTEL_PCH_TGP_DEVICE_ID_TYPE:
- case INTEL_PCH_TGP2_DEVICE_ID_TYPE:
- drm_dbg_kms(&dev_priv->drm, "Found Tiger Lake LP PCH\n");
- drm_WARN_ON(&dev_priv->drm, !IS_TIGERLAKE(dev_priv) &&
- !IS_ROCKETLAKE(dev_priv) &&
- !IS_SKYLAKE(dev_priv) &&
- !IS_KABYLAKE(dev_priv) &&
- !IS_COFFEELAKE(dev_priv) &&
- !IS_COMETLAKE(dev_priv));
- return PCH_TGP;
- case INTEL_PCH_JSP_DEVICE_ID_TYPE:
- drm_dbg_kms(&dev_priv->drm, "Found Jasper Lake PCH\n");
- drm_WARN_ON(&dev_priv->drm, !(IS_JASPERLAKE(dev_priv) ||
- IS_ELKHARTLAKE(dev_priv)));
- /* JSP is ICP compatible */
- return PCH_ICP;
- case INTEL_PCH_ADP_DEVICE_ID_TYPE:
- case INTEL_PCH_ADP2_DEVICE_ID_TYPE:
- case INTEL_PCH_ADP3_DEVICE_ID_TYPE:
- case INTEL_PCH_ADP4_DEVICE_ID_TYPE:
- drm_dbg_kms(&dev_priv->drm, "Found Alder Lake PCH\n");
- drm_WARN_ON(&dev_priv->drm, !IS_ALDERLAKE_S(dev_priv) &&
- !IS_ALDERLAKE_P(dev_priv));
- return PCH_ADP;
- 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 void
-intel_virt_detect_pch(const struct drm_i915_private *dev_priv,
- unsigned short *pch_id, enum intel_pch *pch_type)
-{
- 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_ALDERLAKE_S(dev_priv) || IS_ALDERLAKE_P(dev_priv))
- id = INTEL_PCH_ADP_DEVICE_ID_TYPE;
- else if (IS_TIGERLAKE(dev_priv) || IS_ROCKETLAKE(dev_priv))
- id = INTEL_PCH_TGP_DEVICE_ID_TYPE;
- else if (IS_JASPERLAKE(dev_priv) || 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_COFFEELAKE(dev_priv) ||
- IS_COMETLAKE(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_HASWELL_ULT(dev_priv) || IS_BROADWELL_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 (GRAPHICS_VER(dev_priv) == 6 || IS_IVYBRIDGE(dev_priv))
- id = INTEL_PCH_CPT_DEVICE_ID_TYPE;
- else if (GRAPHICS_VER(dev_priv) == 5)
- id = INTEL_PCH_IBX_DEVICE_ID_TYPE;
-
- if (id)
- drm_dbg_kms(&dev_priv->drm, "Assuming PCH ID %04x\n", id);
- else
- drm_dbg_kms(&dev_priv->drm, "Assuming no PCH\n");
-
- *pch_type = intel_pch_type(dev_priv, id);
-
- /* Sanity check virtual PCH id */
- if (drm_WARN_ON(&dev_priv->drm,
- id && *pch_type == PCH_NONE))
- id = 0;
-
- *pch_id = id;
-}
-
-void intel_detect_pch(struct drm_i915_private *dev_priv)
-{
- struct pci_dev *pch = NULL;
- unsigned short id;
- enum intel_pch pch_type;
-
- /*
- * South display engine on the same PCI device: just assign the fake
- * PCH.
- */
- if (DISPLAY_VER(dev_priv) >= 20) {
- dev_priv->pch_type = PCH_LNL;
- return;
- } else if (IS_BATTLEMAGE(dev_priv) || IS_METEORLAKE(dev_priv)) {
- /*
- * Both north display and south display are on the SoC die.
- * The real PCH (if it even exists) is uninvolved in display.
- */
- dev_priv->pch_type = PCH_MTL;
- return;
- } else if (IS_DG2(dev_priv)) {
- dev_priv->pch_type = PCH_DG2;
- return;
- } else if (IS_DG1(dev_priv)) {
- dev_priv->pch_type = PCH_DG1;
- return;
- }
-
- /*
- * 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))) {
- 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)) {
- intel_virt_detect_pch(dev_priv, &id, &pch_type);
- 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_dbg_kms(&dev_priv->drm,
- "Display disabled, reverting to NOP PCH\n");
- dev_priv->pch_type = PCH_NOP;
- dev_priv->pch_id = 0;
- } else if (!pch) {
- if (i915_run_as_guest() && HAS_DISPLAY(dev_priv)) {
- intel_virt_detect_pch(dev_priv, &id, &pch_type);
- dev_priv->pch_type = pch_type;
- dev_priv->pch_id = id;
- } else {
- drm_dbg_kms(&dev_priv->drm, "No PCH found.\n");
- }
- }
-
- pci_dev_put(pch);
-}
generated by cgit (git 2.34.1) at 2025-05-29 06:12:36 +0000