[patch] Patch for kernel 2.6.12 AGP interface changes

fglrx-2.6.12-agp_interface.patch (text/plain), 2.58 KB, created by Manuel McLure on 2005-07-13 21:48:51 UTC

diff -ruN build_mod.orig/firegl_public.c build_mod/firegl_public.c
--- build_mod.orig/firegl_public.c	2005-06-26 19:35:34 +0400
+++ build_mod/firegl_public.c	2005-06-26 19:41:28 +0400
@@ -1002,8 +1002,16 @@ void* ATI_API_CALL __ke_high_memory(void
     return high_memory;
 }
 
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,12)
+/* Saved pci_dev pointer for the new agpgart API */
+static struct pci_dev *fglrx_pci_dev;
+#endif
+
 int ATI_API_CALL __ke_pci_enable_device(__ke_pci_dev_t* dev)
 {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,12)
+    fglrx_pci_dev = (struct pci_dev *)dev;
+#endif
     return (pci_enable_device( (struct pci_dev*)(void *)dev ));
 }
 
@@ -2865,6 +2873,68 @@ typedef struct {
 	int			(*copy_info)(struct agp_kern_info *);
 } drm_agp_t;
 
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,12)
+/*
+ * Kernel 2.6.12 has new agpgart API with support for multiple AGP bridges, but
+ * the fglrx core does not know about this yet.  For now, just emulate the old
+ * API.
+ */
+
+static struct agp_bridge_data *fglrx_agp_bridge;
+
+static int fglrx_compat_agp_backend_acquire(void)
+{
+	fglrx_agp_bridge = agp_backend_acquire(fglrx_pci_dev);
+	if (!fglrx_agp_bridge)
+		return -ENODEV;
+	return 0;
+}
+
+static void fglrx_compat_agp_backend_release(void)
+{
+	agp_backend_release(fglrx_agp_bridge);
+}
+
+static struct agp_memory *fglrx_compat_agp_allocate_memory(size_t page_count,
+							   u32 type)
+{
+	return agp_allocate_memory(fglrx_agp_bridge, page_count, type);
+}
+
+static void fglrx_compat_agp_enable(u32 mode)
+{
+	agp_enable(fglrx_agp_bridge, mode);
+}
+
+static int fglrx_compat_agp_copy_info(struct agp_kern_info *info)
+{
+	if (!fglrx_agp_bridge) {
+		fglrx_agp_bridge = agp_find_bridge(fglrx_pci_dev);
+		if (!fglrx_agp_bridge) {
+			memset(info, 0, sizeof(struct agp_kern_info));
+			info->chipset = NOT_SUPPORTED;
+			return -ENODEV;
+		}
+	}
+	return agp_copy_info(fglrx_agp_bridge, info);
+}
+
+static const drm_agp_t drm_agp = {
+	&agp_free_memory,
+	&fglrx_compat_agp_allocate_memory,
+	&agp_bind_memory,
+	&agp_unbind_memory,
+	&fglrx_compat_agp_enable,
+	&fglrx_compat_agp_backend_acquire,
+	&fglrx_compat_agp_backend_release,
+	&fglrx_compat_agp_copy_info
+};
+
+#else /* LINUX_VERSION_CODE < KERNEL_VERSION(2,6,12) */
+/*
+ * For 2.6.11 we can just use the agpgart functions directly.
+ */
+
 static const drm_agp_t drm_agp = {
 	&agp_free_memory,
 	&agp_allocate_memory,
@@ -2875,6 +2945,9 @@ static const drm_agp_t drm_agp = {
 	&agp_backend_release,
 	&agp_copy_info
 };
+
+#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2,6,12) */
+
 #undef DRM_AGP_MODULE_GET
 #undef DRM_AGP_MODULE_PUT