drm/i915: Fix stolen memory detection on G45 and GM45.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>

2 files changed, 11 insertions, 6 deletions

diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index b5d0809eecb1..0dee776b91fb 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -821,7 +821,7 @@ static int i915_set_status_page(struct drm_device *dev, void *data,
  * some RAM for the framebuffer at early boot.  This code figures out
  * how much was set aside so we can use it for our own purposes.
  */
-int i915_probe_agp(struct pci_dev *pdev, unsigned long *aperture_size,
+int i915_probe_agp(struct drm_device *dev, unsigned long *aperture_size,
                    unsigned long *preallocated_size)
 {
         struct pci_dev *bridge_dev;
@@ -841,7 +841,7 @@ int i915_probe_agp(struct pci_dev *pdev, unsigned long *aperture_size,
         *aperture_size = 1024 * 1024;
         *preallocated_size = 1024 * 1024;
 
-        switch (pdev->device) {
+        switch (dev->pdev->device) {
         case PCI_DEVICE_ID_INTEL_82830_CGC:
         case PCI_DEVICE_ID_INTEL_82845G_IG:
         case PCI_DEVICE_ID_INTEL_82855GM_IG:
@@ -853,7 +853,7 @@ int i915_probe_agp(struct pci_dev *pdev, unsigned long *aperture_size,
                 break;
         default:
                 /* 9xx supports large sizes, just look at the length */
-                *aperture_size = pci_resource_len(pdev, 2);
+                *aperture_size = pci_resource_len(dev->pdev, 2);
                 break;
         }
 
@@ -861,7 +861,11 @@ int i915_probe_agp(struct pci_dev *pdev, unsigned long *aperture_size,
          * Some of the preallocated space is taken by the GTT
          * and popup.  GTT is 1K per MB of aperture size, and popup is 4K.
          */
-        overhead = (*aperture_size / 1024) + 4096;
+        if (IS_G4X(dev))
+                overhead = 4096;
+        else
+                overhead = (*aperture_size / 1024) + 4096;
+
         switch (tmp & INTEL_855_GMCH_GMS_MASK) {
         case INTEL_855_GMCH_GMS_STOLEN_1M:
                 break; /* 1M already */
@@ -913,7 +917,7 @@ static int i915_load_modeset_init(struct drm_device *dev)
         else
                 dev_priv->cursor_needs_physical = false;
 
-        i915_probe_agp(dev->pdev, &agp_size, &prealloc_size);
+        i915_probe_agp(dev, &agp_size, &prealloc_size);
 
         /* Basic memrange allocator for stolen space (aka vram) */
         drm_mm_init(&dev_priv->vram, 0, prealloc_size);
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 6f18ee68d06a..cc2660580553 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -746,7 +746,8 @@ extern int i915_wait_ring(struct drm_device * dev, int n, const char *caller);
 
 #define IS_G4X(dev) ((dev)->pci_device == 0x2E02 || \
                      (dev)->pci_device == 0x2E12 || \
-                     (dev)->pci_device == 0x2E22)
+                     (dev)->pci_device == 0x2E22 || \
+                     IS_GM45(dev))
 
 #define IS_G33(dev)    ((dev)->pci_device == 0x29C2 ||  \
                         (dev)->pci_device == 0x29B2 ||  \