diff options
| -rw-r--r-- | drivers/gpu/drm/i915/i915_dma.c | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.c | 29 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.h | 13 |
3 files changed, 44 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index a9f8589490c..d2daff1f829 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -1710,6 +1710,8 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags) /* Start out suspended */ dev_priv->mm.suspended = 1; + intel_detect_pch(dev); + if (drm_core_check_feature(dev, DRIVER_MODESET)) { ret = i915_load_modeset_init(dev, prealloc_start, prealloc_size, agp_size); diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index 0af3dcc85ce..01e91ea5bde 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -187,6 +187,35 @@ const static struct pci_device_id pciidlist[] = { MODULE_DEVICE_TABLE(pci, pciidlist); #endif +#define INTEL_PCH_DEVICE_ID_MASK 0xff00 +#define INTEL_PCH_CPT_DEVICE_ID_TYPE 0x1c00 + +void intel_detect_pch (struct drm_device *dev) +{ + struct drm_i915_private *dev_priv = dev->dev_private; + struct pci_dev *pch; + + /* + * 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. + */ + pch = pci_get_class(PCI_CLASS_BRIDGE_ISA << 8, NULL); + if (pch) { + if (pch->vendor == PCI_VENDOR_ID_INTEL) { + int id; + id = pch->device & INTEL_PCH_DEVICE_ID_MASK; + + if (id == INTEL_PCH_CPT_DEVICE_ID_TYPE) { + dev_priv->pch_type = PCH_CPT; + DRM_DEBUG_KMS("Found CougarPoint PCH\n"); + } + } + pci_dev_put(pch); + } +} + static int i915_drm_freeze(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 94fc9b65f4d..6ffabab3bb6 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -221,6 +221,11 @@ enum no_fbc_reason { FBC_NOT_TILED, /* buffer not tiled */ }; +enum intel_pch { + PCH_IBX, /* Ibexpeak PCH */ + PCH_CPT, /* Cougarpoint PCH */ +}; + typedef struct drm_i915_private { struct drm_device *dev; @@ -331,6 +336,9 @@ typedef struct drm_i915_private { /* Display functions */ struct drm_i915_display_funcs display; + /* PCH chipset type */ + enum intel_pch pch_type; + /* Register state */ bool modeset_on_lid; u8 saveLBB; @@ -992,6 +1000,8 @@ extern int intel_modeset_vga_set_state(struct drm_device *dev, bool state); extern void i8xx_disable_fbc(struct drm_device *dev); extern void g4x_disable_fbc(struct drm_device *dev); +extern void intel_detect_pch (struct drm_device *dev); + /** * Lock test for when it's just for synchronization of ring access. * @@ -1137,6 +1147,9 @@ extern int i915_wait_ring(struct drm_device * dev, int n, const char *caller); #define HAS_PCH_SPLIT(dev) (IS_IRONLAKE(dev) || \ IS_GEN6(dev)) +#define INTEL_PCH_TYPE(dev) (((struct drm_i915_private *)(dev)->dev_private)->pch_type) +#define HAS_PCH_CPT(dev) (INTEL_PCH_TYPE(dev) == PCH_CPT) + #define PRIMARY_RINGBUFFER_SIZE (128*1024) #endif |