summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorDave Airlie <airlied@linux.ie>2007-11-15 13:29:55 +1100
committerDave Airlie <airlied@linux.ie>2007-11-15 13:29:55 +1100
commit2eee33ace5b647153a7cf20990efd12313cc8472 (patch)
tree391d64710681cabfa1a3f32502680b0fc27bcce8
parent46235ea4595152d8dd5f016c18c6845a77db30b0 (diff)
intel: add flushing for i8xx chipsets.
Add a nut vs hammer style chipset flush for the i8xx chipsets - reenable TTM code paths
-rw-r--r--linux-core/i915_compat.c126
-rw-r--r--shared-core/i915_dma.c3
2 files changed, 97 insertions, 32 deletions
diff --git a/linux-core/i915_compat.c b/linux-core/i915_compat.c
index b09cc9f2..e8890f67 100644
--- a/linux-core/i915_compat.c
+++ b/linux-core/i915_compat.c
@@ -19,10 +19,15 @@
#define I915_IFPADDR 0x60
#define I965_IFPADDR 0x70
-static struct _intel_private_compat {
+static struct _i9xx_private_compat {
void __iomem *flush_page;
struct resource ifp_resource;
-} intel_private;
+} i9xx_private;
+
+static struct _i8xx_private_compat {
+ void *flush_page;
+ struct page *page;
+} i8xx_private;
static void
intel_compat_align_resource(void *data, struct resource *res,
@@ -35,7 +40,7 @@ intel_compat_align_resource(void *data, struct resource *res,
static int intel_alloc_chipset_flush_resource(struct pci_dev *pdev)
{
int ret;
- ret = pci_bus_alloc_resource(pdev->bus, &intel_private.ifp_resource, PAGE_SIZE,
+ ret = pci_bus_alloc_resource(pdev->bus, &i9xx_private.ifp_resource, PAGE_SIZE,
PAGE_SIZE, PCIBIOS_MIN_MEM, 0,
intel_compat_align_resource, pdev);
if (ret != 0)
@@ -53,15 +58,15 @@ static void intel_i915_setup_chipset_flush(struct pci_dev *pdev)
if (!(temp & 0x1)) {
intel_alloc_chipset_flush_resource(pdev);
- pci_write_config_dword(pdev, I915_IFPADDR, (intel_private.ifp_resource.start & 0xffffffff) | 0x1);
+ pci_write_config_dword(pdev, I915_IFPADDR, (i9xx_private.ifp_resource.start & 0xffffffff) | 0x1);
} else {
temp &= ~1;
- intel_private.ifp_resource.start = temp;
- intel_private.ifp_resource.end = temp + PAGE_SIZE;
- ret = request_resource(&iomem_resource, &intel_private.ifp_resource);
+ i9xx_private.ifp_resource.start = temp;
+ i9xx_private.ifp_resource.end = temp + PAGE_SIZE;
+ ret = request_resource(&iomem_resource, &i9xx_private.ifp_resource);
if (ret) {
- intel_private.ifp_resource.start = 0;
+ i9xx_private.ifp_resource.start = 0;
printk("Failed inserting resource into tree\n");
}
}
@@ -79,34 +84,72 @@ static void intel_i965_g33_setup_chipset_flush(struct pci_dev *pdev)
intel_alloc_chipset_flush_resource(pdev);
- pci_write_config_dword(pdev, I965_IFPADDR + 4, (intel_private.ifp_resource.start >> 32));
- pci_write_config_dword(pdev, I965_IFPADDR, (intel_private.ifp_resource.start & 0xffffffff) | 0x1);
+ pci_write_config_dword(pdev, I965_IFPADDR + 4, (i9xx_private.ifp_resource.start >> 32));
+ pci_write_config_dword(pdev, I965_IFPADDR, (i9xx_private.ifp_resource.start & 0xffffffff) | 0x1);
} else {
u64 l64;
temp_lo &= ~0x1;
l64 = ((u64)temp_hi << 32) | temp_lo;
- intel_private.ifp_resource.start = l64;
- intel_private.ifp_resource.end = l64 + PAGE_SIZE;
- ret = request_resource(&iomem_resource, &intel_private.ifp_resource);
+ i9xx_private.ifp_resource.start = l64;
+ i9xx_private.ifp_resource.end = l64 + PAGE_SIZE;
+ ret = request_resource(&iomem_resource, &i9xx_private.ifp_resource);
if (!ret) {
- intel_private.ifp_resource.start = 0;
+ i9xx_private.ifp_resource.start = 0;
printk("Failed inserting resource into tree\n");
}
}
}
-void intel_init_chipset_flush_compat(struct drm_device *dev)
+static void intel_i8xx_fini_flush(struct drm_device *dev)
{
- struct pci_dev *agp_dev = dev->agp->agp_info.device;
+ kunmap(i8xx_private.page);
+ i8xx_private.flush_page = NULL;
+ unmap_page_from_agp(i8xx_private.page);
+ flush_agp_mappings();
- /* not flush on i8xx */
- if (!IS_I9XX(dev))
+ __free_page(i8xx_private.page);
+}
+
+static void intel_i8xx_setup_flush(struct drm_device *dev)
+{
+
+ i8xx_private.page = alloc_page(GFP_KERNEL | __GFP_ZERO | GFP_DMA32);
+ if (!i8xx_private.page) {
return;
+ }
- intel_private.ifp_resource.name = "GMCH IFPBAR";
- intel_private.ifp_resource.flags = IORESOURCE_MEM;
+ /* make page uncached */
+ map_page_into_agp(i8xx_private.page);
+ flush_agp_mappings();
+
+ i8xx_private.flush_page = kmap(i8xx_private.page);
+ if (!i8xx_private.flush_page)
+ intel_i8xx_fini_flush(dev);
+
+ DRM_ERROR("i8xx got flush page %p %p\n", i8xx_private.page, i8xx_private.flush_page);
+}
+
+
+static void intel_i8xx_flush_page(struct drm_device *dev)
+{
+ unsigned int *pg = i8xx_private.flush_page;
+ int i;
+
+ /* HAI NUT CAN I HAZ HAMMER?? */
+ for (i = 0; i < 256; i++)
+ *(pg + i) = i;
+
+ DRM_MEMORYBARRIER();
+}
+
+static void intel_i9xx_setup_flush(struct drm_device *dev)
+{
+ struct pci_dev *agp_dev = dev->agp->agp_info.device;
+
+ i9xx_private.ifp_resource.name = "GMCH IFPBAR";
+ i9xx_private.ifp_resource.flags = IORESOURCE_MEM;
/* Setup chipset flush for 915 */
if (IS_I965G(dev) || IS_G33(dev)) {
@@ -115,26 +158,49 @@ void intel_init_chipset_flush_compat(struct drm_device *dev)
intel_i915_setup_chipset_flush(agp_dev);
}
- if (intel_private.ifp_resource.start) {
- intel_private.flush_page = ioremap_nocache(intel_private.ifp_resource.start, PAGE_SIZE);
- if (!intel_private.flush_page)
+ if (i9xx_private.ifp_resource.start) {
+ i9xx_private.flush_page = ioremap_nocache(i9xx_private.ifp_resource.start, PAGE_SIZE);
+ if (!i9xx_private.flush_page)
printk("unable to ioremap flush page - no chipset flushing");
}
}
-void intel_fini_chipset_flush_compat(struct drm_device *dev)
+static void intel_i9xx_fini_flush(struct drm_device *dev)
+{
+ iounmap(i9xx_private.flush_page);
+ release_resource(&i9xx_private.ifp_resource);
+}
+
+static void intel_i9xx_flush_page(struct drm_device *dev)
+{
+ if (i9xx_private.flush_page)
+ writel(1, i9xx_private.flush_page);
+}
+
+void intel_init_chipset_flush_compat(struct drm_device *dev)
{
/* not flush on i8xx */
- if (!IS_I9XX(dev))
- return;
+ if (IS_I9XX(dev))
+ intel_i9xx_setup_flush(dev);
+ else
+ intel_i8xx_setup_flush(dev);
+
+}
- iounmap(intel_private.flush_page);
- release_resource(&intel_private.ifp_resource);
+void intel_fini_chipset_flush_compat(struct drm_device *dev)
+{
+ /* not flush on i8xx */
+ if (IS_I9XX(dev))
+ intel_i9xx_fini_flush(dev);
+ else
+ intel_i8xx_fini_flush(dev);
}
void drm_agp_chipset_flush(struct drm_device *dev)
{
- if (intel_private.flush_page)
- writel(1, intel_private.flush_page);
+ if (IS_I9XX(dev))
+ intel_i9xx_flush_page(dev);
+ else
+ intel_i8xx_flush_page(dev);
}
#endif
diff --git a/shared-core/i915_dma.c b/shared-core/i915_dma.c
index 5bc3c490..4d77dfcf 100644
--- a/shared-core/i915_dma.c
+++ b/shared-core/i915_dma.c
@@ -1402,8 +1402,7 @@ int i915_driver_device_is_agp(struct drm_device * dev)
int i915_driver_firstopen(struct drm_device *dev)
{
#ifdef I915_HAVE_BUFFER
- if (IS_I9XX(dev))
- drm_bo_driver_init(dev);
+ drm_bo_driver_init(dev);
#endif
return 0;
}