Upgrade to 4.4.50-rt62

[kvmfornfv.git] / kernel / drivers / gpu / drm / i915 / i915_gem_stolen.c

diff --git a/kernel/drivers/gpu/drm/i915/i915_gem_stolen.c b/kernel/drivers/gpu/drm/i915/i915_gem_stolen.c
index 87e919a..5d2323a 100644 (file)
--- a/kernel/drivers/gpu/drm/i915/i915_gem_stolen.c
+++ b/kernel/drivers/gpu/drm/i915/i915_gem_stolen.c
@@ -108,17 +108,28 @@ static unsigned long i915_stolen_to_physical(struct drm_device *dev)
                pci_read_config_dword(dev->pdev, 0x5c, &base);
                base &= ~((1<<20) - 1);
        } else if (IS_I865G(dev)) {
+               u32 tseg_size = 0;
                u16 toud = 0;
+               u8 tmp;
+
+               pci_bus_read_config_byte(dev->pdev->bus, PCI_DEVFN(0, 0),
+                                        I845_ESMRAMC, &tmp);
+
+               if (tmp & TSEG_ENABLE) {
+                       switch (tmp & I845_TSEG_SIZE_MASK) {
+                       case I845_TSEG_SIZE_512K:
+                               tseg_size = KB(512);
+                               break;
+                       case I845_TSEG_SIZE_1M:
+                               tseg_size = MB(1);
+                               break;
+                       }
+               }
 
-               /*
-                * FIXME is the graphics stolen memory region
-                * always at TOUD? Ie. is it always the last
-                * one to be allocated by the BIOS?
-                */
                pci_bus_read_config_word(dev->pdev->bus, PCI_DEVFN(0, 0),
                                         I865_TOUD, &toud);
 
-               base = toud << 16;
+               base = (toud << 16) + tseg_size;
        } else if (IS_I85X(dev)) {
                u32 tseg_size = 0;
                u32 tom;