Merge branch 'agp-patches' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/agp-2.6

* 'agp-patches' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/agp-2.6:
  agp: remove flush_agp_mappings calls from new flush handling code
  intel-agp: introduce IS_I915 and do some cleanups..
  [intel_agp] fix name for G35 chipset
  intel-agp: fixup resource handling in flush code.
  intel-agp: add new chipset ID
  agp: remove unnecessary pci_dev_put
  agp: remove uid comparison as security check
  fix AGP warning
  agp/intel: Add chipset flushing support for i8xx chipsets.
  intel-agp: add chipset flushing support
  agp: add chipset flushing support to AGP interface

11 files changed, 276 insertions, 71 deletions

diff --git a/arch/x86/pci/i386.c b/arch/x86/pci/i386.c
index 42ba0e2da1a..103b9dff121 100644
--- a/arch/x86/pci/i386.c
+++ b/arch/x86/pci/i386.c
@@ -72,7 +72,7 @@ pcibios_align_resource(void *data, struct resource *res,
 		}
 	}
 }
-
+EXPORT_SYMBOL(pcibios_align_resource);
 
 /*
  *  Handle resources of PCI devices.  If the world were perfect, we could
diff --git a/drivers/char/agp/agp.h b/drivers/char/agp/agp.h
index b83824c4132..c69f79598e4 100644
--- a/drivers/char/agp/agp.h
+++ b/drivers/char/agp/agp.h
@@ -117,7 +117,8 @@ struct agp_bridge_driver {
 	void (*free_by_type)(struct agp_memory *);
 	void *(*agp_alloc_page)(struct agp_bridge_data *);
 	void (*agp_destroy_page)(void *, int flags);
-        int (*agp_type_to_mask_type) (struct agp_bridge_data *, int);
+	int (*agp_type_to_mask_type) (struct agp_bridge_data *, int);
+	void (*chipset_flush)(struct agp_bridge_data *);
 };
 
 struct agp_bridge_data {
@@ -235,6 +236,9 @@ struct agp_bridge_data {
 #define I965_PGETBL_SIZE_512KB	(0 << 1)
 #define I965_PGETBL_SIZE_256KB	(1 << 1)
 #define I965_PGETBL_SIZE_128KB	(2 << 1)
+#define I965_PGETBL_SIZE_1MB	(3 << 1)
+#define I965_PGETBL_SIZE_2MB	(4 << 1)
+#define I965_PGETBL_SIZE_1_5MB	(5 << 1)
 #define G33_PGETBL_SIZE_MASK    (3 << 8)
 #define G33_PGETBL_SIZE_1M      (1 << 8)
 #define G33_PGETBL_SIZE_2M      (2 << 8)
diff --git a/drivers/char/agp/amd-k7-agp.c b/drivers/char/agp/amd-k7-agp.c
index 1405a42585e..87be46406da 100644
--- a/drivers/char/agp/amd-k7-agp.c
+++ b/drivers/char/agp/amd-k7-agp.c
@@ -436,10 +436,6 @@ static int __devinit agp_amdk7_probe(struct pci_dev *pdev,
 				return -ENODEV;
 			}
 			cap_ptr = pci_find_capability(gfxcard, PCI_CAP_ID_AGP);
-			if (!cap_ptr) {
-				pci_dev_put(gfxcard);
-				continue;
-			}
 		}
 
 		/* With so many variants of NVidia cards, it's simpler just
diff --git a/drivers/char/agp/backend.c b/drivers/char/agp/backend.c
index 2720882e66f..b1bdd015165 100644
--- a/drivers/char/agp/backend.c
+++ b/drivers/char/agp/backend.c
@@ -43,7 +43,7 @@
  * fix some real stupidity. It's only by chance we can bump
  * past 0.99 at all due to some boolean logic error. */
 #define AGPGART_VERSION_MAJOR 0
-#define AGPGART_VERSION_MINOR 102
+#define AGPGART_VERSION_MINOR 103
 static const struct agp_version agp_current_version =
 {
 	.major = AGPGART_VERSION_MAJOR,
diff --git a/drivers/char/agp/compat_ioctl.c b/drivers/char/agp/compat_ioctl.c
index ecd4248861b..39275794fe6 100644
--- a/drivers/char/agp/compat_ioctl.c
+++ b/drivers/char/agp/compat_ioctl.c
@@ -273,6 +273,10 @@ long compat_agp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 	case AGPIOC_UNBIND32:
 		ret_val = compat_agpioc_unbind_wrap(curr_priv, (void __user *) arg);
 		break;
+
+	case AGPIOC_CHIPSET_FLUSH32:
+		ret_val = agpioc_chipset_flush_wrap(curr_priv);
+		break;
 	}
 
 ioctl_out:
diff --git a/drivers/char/agp/compat_ioctl.h b/drivers/char/agp/compat_ioctl.h
index 71939d63723..0c9678ac037 100644
--- a/drivers/char/agp/compat_ioctl.h
+++ b/drivers/char/agp/compat_ioctl.h
@@ -39,6 +39,7 @@
 #define AGPIOC_DEALLOCATE32 _IOW (AGPIOC_BASE, 7, compat_int_t)
 #define AGPIOC_BIND32       _IOW (AGPIOC_BASE, 8, compat_uptr_t)
 #define AGPIOC_UNBIND32     _IOW (AGPIOC_BASE, 9, compat_uptr_t)
+#define AGPIOC_CHIPSET_FLUSH32 _IO (AGPIOC_BASE, 10)
 
 struct agp_info32 {
 	struct agp_version version;	/* version of the driver        */
@@ -101,5 +102,6 @@ void agp_free_memory_wrap(struct agp_memory *memory);
 struct agp_memory *agp_allocate_memory_wrap(size_t pg_count, u32 type);
 struct agp_memory *agp_find_mem_by_key(int key);
 struct agp_client *agp_find_client_by_pid(pid_t id);
+int agpioc_chipset_flush_wrap(struct agp_file_private *priv);
 
 #endif /* _AGP_COMPAT_H */
diff --git a/drivers/char/agp/frontend.c b/drivers/char/agp/frontend.c
index 7791e98de51..55d7a82bd07 100644
--- a/drivers/char/agp/frontend.c
+++ b/drivers/char/agp/frontend.c
@@ -689,7 +689,7 @@ static int agp_open(struct inode *inode, struct file *file)
 	set_bit(AGP_FF_ALLOW_CLIENT, &priv->access_flags);
 	priv->my_pid = current->pid;
 
-	if ((current->uid == 0) || (current->suid == 0)) {
+	if (capable(CAP_SYS_RAWIO)) {
 		/* Root priv, can be controller */
 		set_bit(AGP_FF_ALLOW_CONTROLLER, &priv->access_flags);
 	}
@@ -960,6 +960,13 @@ static int agpioc_unbind_wrap(struct agp_file_private *priv, void __user *arg)
 	return agp_unbind_memory(memory);
 }
 
+int agpioc_chipset_flush_wrap(struct agp_file_private *priv)
+{
+	DBG("");
+	agp_flush_chipset(agp_bridge);
+	return 0;
+}
+
 static int agp_ioctl(struct inode *inode, struct file *file,
 		     unsigned int cmd, unsigned long arg)
 {
@@ -1033,6 +1040,10 @@ static int agp_ioctl(struct inode *inode, struct file *file,
 	case AGPIOC_UNBIND:
 		ret_val = agpioc_unbind_wrap(curr_priv, (void __user *) arg);
 		break;
+	       
+	case AGPIOC_CHIPSET_FLUSH:
+		ret_val = agpioc_chipset_flush_wrap(curr_priv);
+		break;
 	}
 
 ioctl_out:
diff --git a/drivers/char/agp/generic.c b/drivers/char/agp/generic.c
index 1a4674ce0c7..7484bc759c4 100644
--- a/drivers/char/agp/generic.c
+++ b/drivers/char/agp/generic.c
@@ -80,6 +80,13 @@ static int agp_get_key(void)
 	return -1;
 }
 
+void agp_flush_chipset(struct agp_bridge_data *bridge)
+{
+	if (bridge->driver->chipset_flush)
+		bridge->driver->chipset_flush(bridge);
+}
+EXPORT_SYMBOL(agp_flush_chipset);
+
 /*
  * Use kmalloc if possible for the page list. Otherwise fall back to
  * vmalloc. This speeds things up and also saves memory for small AGP
diff --git a/drivers/char/agp/intel-agp.c b/drivers/char/agp/intel-agp.c
index 189efb6ef97..eeea50a1d22 100644
--- a/drivers/char/agp/intel-agp.c
+++ b/drivers/char/agp/intel-agp.c
@@ -14,8 +14,8 @@
 #define PCI_DEVICE_ID_INTEL_E7221_IG	0x258a
 #define PCI_DEVICE_ID_INTEL_82946GZ_HB      0x2970
 #define PCI_DEVICE_ID_INTEL_82946GZ_IG      0x2972
-#define PCI_DEVICE_ID_INTEL_82965G_1_HB     0x2980
-#define PCI_DEVICE_ID_INTEL_82965G_1_IG     0x2982
+#define PCI_DEVICE_ID_INTEL_82G35_HB     0x2980
+#define PCI_DEVICE_ID_INTEL_82G35_IG     0x2982
 #define PCI_DEVICE_ID_INTEL_82965Q_HB       0x2990
 #define PCI_DEVICE_ID_INTEL_82965Q_IG       0x2992
 #define PCI_DEVICE_ID_INTEL_82965G_HB       0x29A0
@@ -32,13 +32,24 @@
 #define PCI_DEVICE_ID_INTEL_Q35_IG          0x29B2
 #define PCI_DEVICE_ID_INTEL_Q33_HB          0x29D0
 #define PCI_DEVICE_ID_INTEL_Q33_IG          0x29D2
+#define PCI_DEVICE_ID_INTEL_IGD_HB          0x2A40
+#define PCI_DEVICE_ID_INTEL_IGD_IG          0x2A42
+
+/* cover 915 and 945 variants */
+#define IS_I915 (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_E7221_HB || \
+		 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915G_HB || \
+		 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB || \
+		 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945G_HB || \
+		 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945GM_HB || \
+		 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945GME_HB)
 
 #define IS_I965 (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82946GZ_HB || \
-                 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965G_1_HB || \
-                 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965Q_HB || \
-                 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965G_HB || \
-                 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965GM_HB || \
-                 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965GME_HB)
+		 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82G35_HB || \
+		 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965Q_HB || \
+		 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965G_HB || \
+		 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965GM_HB || \
+		 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965GME_HB || \
+		 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_IGD_HB)
 
 #define IS_G33 (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_G33_HB || \
 		agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_Q35_HB || \
@@ -71,9 +82,11 @@ extern int agp_memory_reserved;
 #define I915_GMCH_GMS_STOLEN_64M	(0x7 << 4)
 #define G33_GMCH_GMS_STOLEN_128M       (0x8 << 4)
 #define G33_GMCH_GMS_STOLEN_256M       (0x9 << 4)
+#define I915_IFPADDR    0x60
 
 /* Intel 965G registers */
 #define I965_MSAC 0x62
+#define I965_IFPADDR    0x70
 
 /* Intel 7505 registers */
 #define INTEL_I7505_APSIZE	0x74
@@ -115,6 +128,13 @@ static struct _intel_private {
 	 * popup and for the GTT.
 	 */
 	int gtt_entries;			/* i830+ */
+	union {
+		void __iomem *i9xx_flush_page;
+		void *i8xx_flush_page;
+	};
+	struct page *i8xx_page;
+	struct resource ifp_resource;
+	int resource_valid;
 } intel_private;
 
 static int intel_i810_fetch_size(void)
@@ -204,7 +224,7 @@ static void intel_i810_agp_enable(struct agp_bridge_data *bridge, u32 mode)
 /* Exists to support ARGB cursors */
 static void *i8xx_alloc_pages(void)
 {
-	struct page * page;
+	struct page *page;
 
 	page = alloc_pages(GFP_KERNEL | GFP_DMA32, 2);
 	if (page == NULL)
@@ -433,7 +453,7 @@ static void intel_i830_init_gtt_entries(void)
 	static const int ddt[4] = { 0, 16, 32, 64 };
 	int size; /* reserved space (in kb) at the top of stolen memory */
 
-	pci_read_config_word(agp_bridge->dev,I830_GMCH_CTRL,&gmch_ctrl);
+	pci_read_config_word(agp_bridge->dev, I830_GMCH_CTRL, &gmch_ctrl);
 
 	if (IS_I965) {
 		u32 pgetbl_ctl;
@@ -453,6 +473,15 @@ static void intel_i830_init_gtt_entries(void)
 		case I965_PGETBL_SIZE_512KB:
 			size = 512;
 			break;
+		case I965_PGETBL_SIZE_1MB:
+			size = 1024;
+			break;
+		case I965_PGETBL_SIZE_2MB:
+			size = 2048;
+			break;
+		case I965_PGETBL_SIZE_1_5MB:
+			size = 1024 + 512;
+			break;
 		default:
 			printk(KERN_INFO PFX "Unknown page table size, "
 			       "assuming 512KB\n");
@@ -523,26 +552,14 @@ static void intel_i830_init_gtt_entries(void)
 			break;
 		case I915_GMCH_GMS_STOLEN_48M:
 			/* Check it's really I915G */
-			if (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_E7221_HB ||
-			    agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915G_HB ||
-			    agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB ||
-			    agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945G_HB ||
-			    agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945GM_HB ||
-			    agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945GME_HB ||
-			    IS_I965 || IS_G33)
+			if (IS_I915 || IS_I965 || IS_G33)
 				gtt_entries = MB(48) - KB(size);
 			else
 				gtt_entries = 0;
 			break;
 		case I915_GMCH_GMS_STOLEN_64M:
 			/* Check it's really I915G */
-			if (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_E7221_HB ||
-			    agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915G_HB ||
-			    agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB ||
-			    agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945G_HB ||
-			    agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945GM_HB ||
-			    agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945GME_HB ||
-			    IS_I965 || IS_G33)
+			if (IS_I915 || IS_I965 || IS_G33)
 				gtt_entries = MB(64) - KB(size);
 			else
 				gtt_entries = 0;
@@ -575,6 +592,45 @@ static void intel_i830_init_gtt_entries(void)
 	intel_private.gtt_entries = gtt_entries;
 }
 
+static void intel_i830_fini_flush(void)
+{
+	kunmap(intel_private.i8xx_page);
+	intel_private.i8xx_flush_page = NULL;
+	unmap_page_from_agp(intel_private.i8xx_page);
+
+	__free_page(intel_private.i8xx_page);
+	intel_private.i8xx_page = NULL;
+}
+
+static void intel_i830_setup_flush(void)
+{
+	/* return if we've already set the flush mechanism up */
+	if (intel_private.i8xx_page)
+		return;
+
+	intel_private.i8xx_page = alloc_page(GFP_KERNEL | __GFP_ZERO | GFP_DMA32);
+	if (!intel_private.i8xx_page)
+		return;
+
+	/* make page uncached */
+	map_page_into_agp(intel_private.i8xx_page);
+
+	intel_private.i8xx_flush_page = kmap(intel_private.i8xx_page);
+	if (!intel_private.i8xx_flush_page)
+		intel_i830_fini_flush();
+}
+
+static void intel_i830_chipset_flush(struct agp_bridge_data *bridge)
+{
+	unsigned int *pg = intel_private.i8xx_flush_page;
+	int i;
+
+	for (i = 0; i < 256; i += 2)
+		*(pg + i) = i;
+
+	wmb();
+}
+
 /* The intel i830 automatically initializes the agp aperture during POST.
  * Use the memory already set aside for in the GTT.
  */
@@ -590,10 +646,10 @@ static int intel_i830_create_gatt_table(struct agp_bridge_data *bridge)
 	num_entries = size->num_entries;
 	agp_bridge->gatt_table_real = NULL;
 
-	pci_read_config_dword(intel_private.pcidev,I810_MMADDR,&temp);
+	pci_read_config_dword(intel_private.pcidev, I810_MMADDR, &temp);
 	temp &= 0xfff80000;
 
-	intel_private.registers = ioremap(temp,128 * 4096);
+	intel_private.registers = ioremap(temp, 128 * 4096);
 	if (!intel_private.registers)
 		return -ENOMEM;
 
@@ -633,7 +689,7 @@ static int intel_i830_fetch_size(void)
 		return values[0].size;
 	}
 
-	pci_read_config_word(agp_bridge->dev,I830_GMCH_CTRL,&gmch_ctrl);
+	pci_read_config_word(agp_bridge->dev, I830_GMCH_CTRL, &gmch_ctrl);
 
 	if ((gmch_ctrl & I830_GMCH_MEM_MASK) == I830_GMCH_MEM_128M) {
 		agp_bridge->previous_size = agp_bridge->current_size = (void *) values;
@@ -657,12 +713,12 @@ static int intel_i830_configure(void)
 
 	current_size = A_SIZE_FIX(agp_bridge->current_size);
 
-	pci_read_config_dword(intel_private.pcidev,I810_GMADDR,&temp);
+	pci_read_config_dword(intel_private.pcidev, I810_GMADDR, &temp);
 	agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
 
-	pci_read_config_word(agp_bridge->dev,I830_GMCH_CTRL,&gmch_ctrl);
+	pci_read_config_word(agp_bridge->dev, I830_GMCH_CTRL, &gmch_ctrl);
 	gmch_ctrl |= I830_GMCH_ENABLED;
-	pci_write_config_word(agp_bridge->dev,I830_GMCH_CTRL,gmch_ctrl);
+	pci_write_config_word(agp_bridge->dev, I830_GMCH_CTRL, gmch_ctrl);
 
 	writel(agp_bridge->gatt_bus_addr|I810_PGETBL_ENABLED, intel_private.registers+I810_PGETBL_CTL);
 	readl(intel_private.registers+I810_PGETBL_CTL);	/* PCI Posting. */
@@ -675,6 +731,8 @@ static int intel_i830_configure(void)
 	}
 
 	global_cache_flush();
+
+	intel_i830_setup_flush();
 	return 0;
 }
 
@@ -683,9 +741,10 @@ static void intel_i830_cleanup(void)
 	iounmap(intel_private.registers);
 }
 
-static int intel_i830_insert_entries(struct agp_memory *mem,off_t pg_start, int type)
+static int intel_i830_insert_entries(struct agp_memory *mem, off_t pg_start,
+				     int type)
 {
-	int i,j,num_entries;
+	int i, j, num_entries;
 	void *temp;
 	int ret = -EINVAL;
 	int mask_type;
@@ -697,10 +756,10 @@ static int intel_i830_insert_entries(struct agp_memory *mem,off_t pg_start, int
 	num_entries = A_SIZE_FIX(temp)->num_entries;
 
 	if (pg_start < intel_private.gtt_entries) {
-		printk (KERN_DEBUG PFX "pg_start == 0x%.8lx,intel_private.gtt_entries == 0x%.8x\n",
-				pg_start,intel_private.gtt_entries);
+		printk(KERN_DEBUG PFX "pg_start == 0x%.8lx,intel_private.gtt_entries == 0x%.8x\n",
+				pg_start, intel_private.gtt_entries);
 
-		printk (KERN_INFO PFX "Trying to insert into local/stolen memory\n");
+		printk(KERN_INFO PFX "Trying to insert into local/stolen memory\n");
 		goto out_err;
 	}
 
@@ -738,8 +797,8 @@ out_err:
 	return ret;
 }
 
-static int intel_i830_remove_entries(struct agp_memory *mem,off_t pg_start,
-				int type)
+static int intel_i830_remove_entries(struct agp_memory *mem, off_t pg_start,
+				     int type)
 {
 	int i;
 
@@ -747,7 +806,7 @@ static int intel_i830_remove_entries(struct agp_memory *mem,off_t pg_start,
 		return 0;
 
 	if (pg_start < intel_private.gtt_entries) {
-		printk (KERN_INFO PFX "Trying to disable local/stolen memory\n");
+		printk(KERN_INFO PFX "Trying to disable local/stolen memory\n");
 		return -EINVAL;
 	}
 
@@ -760,7 +819,7 @@ static int intel_i830_remove_entries(struct agp_memory *mem,off_t pg_start,
 	return 0;
 }
 
-static struct agp_memory *intel_i830_alloc_by_type(size_t pg_count,int type)
+static struct agp_memory *intel_i830_alloc_by_type(size_t pg_count, int type)
 {
 	if (type == AGP_PHYS_MEMORY)
 		return alloc_agpphysmem_i8xx(pg_count, type);
@@ -768,6 +827,95 @@ static struct agp_memory *intel_i830_alloc_by_type(size_t pg_count,int type)
 	return NULL;
 }
 
+static int intel_alloc_chipset_flush_resource(void)
+{
+	int ret;
+	ret = pci_bus_alloc_resource(agp_bridge->dev->bus, &intel_private.ifp_resource, PAGE_SIZE,
+				     PAGE_SIZE, PCIBIOS_MIN_MEM, 0,
+				     pcibios_align_resource, agp_bridge->dev);
+
+	return ret;
+}
+
+static void intel_i915_setup_chipset_flush(void)
+{
+	int ret;
+	u32 temp;
+
+	pci_read_config_dword(agp_bridge->dev, I915_IFPADDR, &temp);
+	if (!(temp & 0x1)) {
+		intel_alloc_chipset_flush_resource();
+		intel_private.resource_valid = 1;
+		pci_write_config_dword(agp_bridge->dev, I915_IFPADDR, (intel_private.ifp_resource.start & 0xffffffff) | 0x1);
+	} else {
+		temp &= ~1;
+
+		intel_private.resource_valid = 1;
+		intel_private.ifp_resource.start = temp;
+		intel_private.ifp_resource.end = temp + PAGE_SIZE;
+		ret = request_resource(&iomem_resource, &intel_private.ifp_resource);
+		/* some BIOSes reserve this area in a pnp some don't */
+		if (ret)
+			intel_private.resource_valid = 0;
+	}
+}
+
+static void intel_i965_g33_setup_chipset_flush(void)
+{
+	u32 temp_hi, temp_lo;
+	int ret;
+
+	pci_read_config_dword(agp_bridge->dev, I965_IFPADDR + 4, &temp_hi);
+	pci_read_config_dword(agp_bridge->dev, I965_IFPADDR, &temp_lo);
+
+	if (!(temp_lo & 0x1)) {
+
+		intel_alloc_chipset_flush_resource();
+
+		intel_private.resource_valid = 1;
+		pci_write_config_dword(agp_bridge->dev, I965_IFPADDR + 4,
+			upper_32_bits(intel_private.ifp_resource.start));
+		pci_write_config_dword(agp_bridge->dev, I965_IFPADDR, (intel_private.ifp_resource.start & 0xffffffff) | 0x1);
+	} else {
+		u64 l64;
+
+		temp_lo &= ~0x1;
+		l64 = ((u64)temp_hi << 32) | temp_lo;
+
+		intel_private.resource_valid = 1;
+		intel_private.ifp_resource.start = l64;
+		intel_private.ifp_resource.end = l64 + PAGE_SIZE;
+		ret = request_resource(&iomem_resource, &intel_private.ifp_resource);
+		/* some BIOSes reserve this area in a pnp some don't */
+		if (ret)
+			intel_private.resource_valid = 0;
+	}
+}
+
+static void intel_i9xx_setup_flush(void)
+{
+	/* return if already configured */
+	if (intel_private.ifp_resource.start)
+		return;
+
+	/* setup a resource for this object */
+	intel_private.ifp_resource.name = "Intel Flush Page";
+	intel_private.ifp_resource.flags = IORESOURCE_MEM;
+
+	/* Setup chipset flush for 915 */
+	if (IS_I965 || IS_G33) {
+		intel_i965_g33_setup_chipset_flush();
+	} else {
+		intel_i915_setup_chipset_flush();
+	}
+
+	if (intel_private.ifp_resource.start) {
+		intel_private.i9xx_flush_page = ioremap_nocache(intel_private.ifp_resource.start, PAGE_SIZE);
+		if (!intel_private.i9xx_flush_page)
+			printk(KERN_INFO "unable to ioremap flush  page - no chipset flushing");
+	}
+}
+
 static int intel_i915_configure(void)
 {
 	struct aper_size_info_fixed *current_size;
@@ -781,9 +929,9 @@ static int intel_i915_configure(void)
 
 	agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
 
-	pci_read_config_word(agp_bridge->dev,I830_GMCH_CTRL,&gmch_ctrl);
+	pci_read_config_word(agp_bridge->dev, I830_GMCH_CTRL, &gmch_ctrl);
 	gmch_ctrl |= I830_GMCH_ENABLED;
-	pci_write_config_word(agp_bridge->dev,I830_GMCH_CTRL,gmch_ctrl);
+	pci_write_config_word(agp_bridge->dev, I830_GMCH_CTRL, gmch_ctrl);
 
 	writel(agp_bridge->gatt_bus_addr|I810_PGETBL_ENABLED, intel_private.registers+I810_PGETBL_CTL);
 	readl(intel_private.registers+I810_PGETBL_CTL);	/* PCI Posting. */
@@ -796,19 +944,34 @@ static int intel_i915_configure(void)
 	}
 
 	global_cache_flush();
+
+	intel_i9xx_setup_flush();
+
 	return 0;
 }
 
 static void intel_i915_cleanup(void)
 {
+	if (intel_private.i9xx_flush_page)
+		iounmap(intel_private.i9xx_flush_page);
+	if (intel_private.resource_valid)
+		release_resource(&intel_private.ifp_resource);
+	intel_private.ifp_resource.start = 0;
+	intel_private.resource_valid = 0;
 	iounmap(intel_private.gtt);
 	iounmap(intel_private.registers);
 }
 
-static int intel_i915_insert_entries(struct agp_memory *mem,off_t pg_start,
-				int type)
+static void intel_i915_chipset_flush(struct agp_bridge_data *bridge)
 {
-	int i,j,num_entries;
+	if (intel_private.i9xx_flush_page)
+		writel(1, intel_private.i9xx_flush_page);
+}
+
+static int intel_i915_insert_entries(struct agp_memory *mem, off_t pg_start,
+				     int type)
+{
+	int i, j, num_entries;
 	void *temp;
 	int ret = -EINVAL;
 	int mask_type;
@@ -820,10 +983,10 @@ static int intel_i915_insert_entries(struct agp_memory *mem,off_t pg_start,
 	num_entries = A_SIZE_FIX(temp)->num_entries;
 
 	if (pg_start < intel_private.gtt_entries) {
-		printk (KERN_DEBUG PFX "pg_start == 0x%.8lx,intel_private.gtt_entries == 0x%.8x\n",
-				pg_start,intel_private.gtt_entries);
+		printk(KERN_DEBUG PFX "pg_start == 0x%.8lx,intel_private.gtt_entries == 0x%.8x\n",
+				pg_start, intel_private.gtt_entries);
 
-		printk (KERN_INFO PFX "Trying to insert into local/stolen memory\n");
+		printk(KERN_INFO PFX "Trying to insert into local/stolen memory\n");
 		goto out_err;
 	}
 
@@ -861,8 +1024,8 @@ static int intel_i915_insert_entries(struct agp_memory *mem,off_t pg_start,
 	return ret;
 }
 
-static int intel_i915_remove_entries(struct agp_memory *mem,off_t pg_start,
-				int type)
+static int intel_i915_remove_entries(struct agp_memory *mem, off_t pg_start,
+				     int type)
 {
 	int i;
 
@@ -870,13 +1033,13 @@ static int intel_i915_remove_entries(struct agp_memory *mem,off_t pg_start,
 		return 0;
 
 	if (pg_start < intel_private.gtt_entries) {
-		printk (KERN_INFO PFX "Trying to disable local/stolen memory\n");
+		printk(KERN_INFO PFX "Trying to disable local/stolen memory\n");
 		return -EINVAL;
 	}
 
-	for (i = pg_start; i < (mem->page_count + pg_start); i++) {
+	for (i = pg_start; i < (mem->page_count + pg_start); i++)
 		writel(agp_bridge->scratch_page, intel_private.gtt+i);
-	}
+
 	readl(intel_private.gtt+i-1);
 
 	agp_bridge->driver->tlb_flush(mem);
@@ -923,7 +1086,7 @@ static int intel_i915_create_gatt_table(struct agp_bridge_data *bridge)
 	agp_bridge->gatt_table_real = NULL;
 
 	pci_read_config_dword(intel_private.pcidev, I915_MMADDR, &temp);
-	pci_read_config_dword(intel_private.pcidev, I915_PTEADDR,&temp2);
+	pci_read_config_dword(intel_private.pcidev, I915_PTEADDR, &temp2);
 
 	if (IS_G33)
 	    gtt_map_size = 1024 * 1024; /* 1M on G33 */
@@ -933,7 +1096,7 @@ static int intel_i915_create_gatt_table(struct agp_bridge_data *bridge)
 
 	temp &= 0xfff80000;
 
-	intel_private.registers = ioremap(temp,128 * 4096);
+	intel_private.registers = ioremap(temp, 128 * 4096);
 	if (!intel_private.registers) {
 		iounmap(intel_private.gtt);
 		return -ENOMEM;
@@ -980,6 +1143,7 @@ static int intel_i965_create_gatt_table(struct agp_bridge_data *bridge)
        struct aper_size_info_fixed *size;
        int num_entries;
        u32 temp;
+       int gtt_offset, gtt_size;
 
        size = agp_bridge->current_size;
        page_order = size->page_order;
@@ -989,13 +1153,18 @@ static int intel_i965_create_gatt_table(struct agp_bridge_data *bridge)
        pci_read_config_dword(intel_private.pcidev, I915_MMADDR, &temp);
 
        temp &= 0xfff00000;
-       intel_private.gtt = ioremap((temp + (512 * 1024)) , 512 * 1024);
 
-	if (!intel_private.gtt)
-		return -ENOMEM;
+       if (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_IGD_HB)
+	       gtt_offset = gtt_size = MB(2);
+       else
+	       gtt_offset = gtt_size = KB(512);
+
+       intel_private.gtt = ioremap((temp + gtt_offset) , gtt_size);
 
+       if (!intel_private.gtt)
+	       return -ENOMEM;
 
-       intel_private.registers = ioremap(temp,128 * 4096);
+       intel_private.registers = ioremap(temp, 128 * 4096);
        if (!intel_private.registers) {
 		iounmap(intel_private.gtt);
 		return -ENOMEM;
@@ -1154,7 +1323,7 @@ static int intel_815_configure(void)
 	/* the Intel 815 chipset spec. says that bits 29-31 in the
 	* ATTBASE register are reserved -> try not to write them */
 	if (agp_bridge->gatt_bus_addr & INTEL_815_ATTBASE_MASK) {
-		printk (KERN_EMERG PFX "gatt bus addr too high");
+		printk(KERN_EMERG PFX "gatt bus addr too high");
 		return -EINVAL;
 	}
 
@@ -1296,6 +1465,8 @@ static int intel_845_configure(void)
 	pci_write_config_byte(agp_bridge->dev, INTEL_I845_AGPM, temp2 | (1 << 1));
 	/* clear any possible error conditions */
 	pci_write_config_word(agp_bridge->dev, INTEL_I845_ERRSTS, 0x001c);
+
+	intel_i830_setup_flush();
 	return 0;
 }
 
@@ -1552,6 +1723,7 @@ static const struct agp_bridge_driver intel_830_driver = {
 	.agp_alloc_page		= agp_generic_alloc_page,
 	.agp_destroy_page	= agp_generic_destroy_page,
 	.agp_type_to_mask_type  = intel_i830_type_to_mask_type,
+	.chipset_flush		= intel_i830_chipset_flush,
 };
 
 static const struct agp_bridge_driver intel_820_driver = {
@@ -1648,6 +1820,7 @@ static const struct agp_bridge_driver intel_845_driver = {
 	.agp_alloc_page		= agp_generic_alloc_page,
 	.agp_destroy_page	= agp_generic_destroy_page,
 	.agp_type_to_mask_type  = agp_generic_type_to_mask_type,
+	.chipset_flush		= intel_i830_chipset_flush,
 };
 
 static const struct agp_bridge_driver intel_850_driver = {
@@ -1721,6 +1894,7 @@ static const struct agp_bridge_driver intel_915_driver = {
 	.agp_alloc_page		= agp_generic_alloc_page,
 	.agp_destroy_page	= agp_generic_destroy_page,
 	.agp_type_to_mask_type  = intel_i830_type_to_mask_type,
+	.chipset_flush		= intel_i915_chipset_flush,
 };
 
 static const struct agp_bridge_driver intel_i965_driver = {
@@ -1746,6 +1920,7 @@ static const struct agp_bridge_driver intel_i965_driver = {
        .agp_alloc_page         = agp_generic_alloc_page,
        .agp_destroy_page       = agp_generic_destroy_page,
        .agp_type_to_mask_type  = intel_i830_type_to_mask_type,
+	.chipset_flush		= intel_i915_chipset_flush,
 };
 
 static const struct agp_bridge_driver intel_7505_driver = {
@@ -1795,6 +1970,7 @@ static const struct agp_bridge_driver intel_g33_driver = {
 	.agp_alloc_page         = agp_generic_alloc_page,
 	.agp_destroy_page       = agp_generic_destroy_page,
 	.agp_type_to_mask_type  = intel_i830_type_to_mask_type,
+	.chipset_flush		= intel_i915_chipset_flush,
 };
 
 static int find_gmch(u16 device)
@@ -1804,7 +1980,7 @@ static int find_gmch(u16 device)
 	gmch_device = pci_get_device(PCI_VENDOR_ID_INTEL, device, NULL);
 	if (gmch_device && PCI_FUNC(gmch_device->devfn) != 0) {
 		gmch_device = pci_get_device(PCI_VENDOR_ID_INTEL,
-                                device, gmch_device);
+					     device, gmch_device);
 	}
 
 	if (!gmch_device)
@@ -1867,7 +2043,7 @@ static const struct intel_driver_description {
 		NULL, &intel_915_driver },
 	{ PCI_DEVICE_ID_INTEL_82946GZ_HB, PCI_DEVICE_ID_INTEL_82946GZ_IG, 0, "946GZ",
 		NULL, &intel_i965_driver },
-	{ PCI_DEVICE_ID_INTEL_82965G_1_HB, PCI_DEVICE_ID_INTEL_82965G_1_IG, 0, "965G",
+	{ PCI_DEVICE_ID_INTEL_82G35_HB, PCI_DEVICE_ID_INTEL_82G35_IG, 0, "G35",
 		NULL, &intel_i965_driver },
 	{ PCI_DEVICE_ID_INTEL_82965Q_HB, PCI_DEVICE_ID_INTEL_82965Q_IG, 0, "965Q",
 		NULL, &intel_i965_driver },
@@ -1885,6 +2061,8 @@ static const struct intel_driver_description {
 		NULL, &intel_g33_driver },
 	{ PCI_DEVICE_ID_INTEL_Q33_HB, PCI_DEVICE_ID_INTEL_Q33_IG, 0, "Q33",
 		NULL, &intel_g33_driver },
+	{ PCI_DEVICE_ID_INTEL_IGD_HB, PCI_DEVICE_ID_INTEL_IGD_IG, 0,
+	    "Intel Integrated Graphics Device", NULL, &intel_i965_driver },
 	{ 0, 0, 0, NULL, NULL, NULL }
 };
 
@@ -1924,7 +2102,7 @@ static int __devinit agp_intel_probe(struct pci_dev *pdev,
 	if (intel_agp_chipsets[i].name == NULL) {
 		if (cap_ptr)
 			printk(KERN_WARNING PFX "Unsupported Intel chipset"
-                               "(device id: %04x)\n", pdev->device);
+			       "(device id: %04x)\n", pdev->device);
 		agp_put_bridge(bridge);
 		return -ENODEV;
 	}
@@ -1937,7 +2115,7 @@ static int __devinit agp_intel_probe(struct pci_dev *pdev,
 				intel_agp_chipsets[i].gmch_chip_id);
 		agp_put_bridge(bridge);
 		return -ENODEV;
-        }
+	}
 
 	bridge->dev = pdev;
 	bridge->capndx = cap_ptr;
@@ -2067,7 +2245,7 @@ static struct pci_device_id agp_intel_pci_table[] = {
 	ID(PCI_DEVICE_ID_INTEL_82945GM_HB),
 	ID(PCI_DEVICE_ID_INTEL_82945GME_HB),
 	ID(PCI_DEVICE_ID_INTEL_82946GZ_HB),
-	ID(PCI_DEVICE_ID_INTEL_82965G_1_HB),
+	ID(PCI_DEVICE_ID_INTEL_82G35_HB),
 	ID(PCI_DEVICE_ID_INTEL_82965Q_HB),
 	ID(PCI_DEVICE_ID_INTEL_82965G_HB),
 	ID(PCI_DEVICE_ID_INTEL_82965GM_HB),
@@ -2075,6 +2253,7 @@ static struct pci_device_id agp_intel_pci_table[] = {
 	ID(PCI_DEVICE_ID_INTEL_G33_HB),
 	ID(PCI_DEVICE_ID_INTEL_Q35_HB),
 	ID(PCI_DEVICE_ID_INTEL_Q33_HB),
+	ID(PCI_DEVICE_ID_INTEL_IGD_HB),
 	{ }
 };
 
diff --git a/include/linux/agp_backend.h b/include/linux/agp_backend.h
index abc521cfb08..03e34547d48 100644
--- a/include/linux/agp_backend.h
+++ b/include/linux/agp_backend.h
@@ -109,6 +109,7 @@ extern int agp_unbind_memory(struct agp_memory *);
 extern void agp_enable(struct agp_bridge_data *, u32);
 extern struct agp_bridge_data *agp_backend_acquire(struct pci_dev *);
 extern void agp_backend_release(struct agp_bridge_data *);
+extern void agp_flush_chipset(struct agp_bridge_data *);
 
 #endif				/* __KERNEL__ */
 #endif				/* _AGP_BACKEND_H */
diff --git a/include/linux/agpgart.h b/include/linux/agpgart.h
index 09fbf7e5a6c..62aef589eb9 100644
--- a/include/linux/agpgart.h
+++ b/include/linux/agpgart.h
@@ -38,6 +38,7 @@
 #define AGPIOC_DEALLOCATE _IOW (AGPIOC_BASE, 7, int)
 #define AGPIOC_BIND       _IOW (AGPIOC_BASE, 8, struct agp_bind*)
 #define AGPIOC_UNBIND     _IOW (AGPIOC_BASE, 9, struct agp_unbind*)
+#define AGPIOC_CHIPSET_FLUSH _IO (AGPIOC_BASE, 10)
 
 #define AGP_DEVICE      "/dev/agpgart"