6 files changed, 73 insertions, 28 deletions

diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index f4c95aec5acb..882328efc3db 100644
--- a/arch/x86/mm/ioremap.c
+++ b/arch/x86/mm/ioremap.c
@@ -134,6 +134,8 @@ static void __iomem *__ioremap(unsigned long phys_addr, unsigned long size,
                         return NULL;
         }
 
+        WARN_ON_ONCE(page_is_ram(pfn));
+
         switch (mode) {
         case IOR_MODE_UNCACHED:
         default:
diff --git a/drivers/char/agp/amd-k7-agp.c b/drivers/char/agp/amd-k7-agp.c
index 87be46406daf..d28669992147 100644
--- a/drivers/char/agp/amd-k7-agp.c
+++ b/drivers/char/agp/amd-k7-agp.c
@@ -41,6 +41,7 @@ static int amd_create_page_map(struct amd_page_map *page_map)
         if (page_map->real == NULL)
                 return -ENOMEM;
 
+#ifndef CONFIG_X86
         SetPageReserved(virt_to_page(page_map->real));
         global_cache_flush();
         page_map->remapped = ioremap_nocache(virt_to_gart(page_map->real),
@@ -52,6 +53,10 @@ static int amd_create_page_map(struct amd_page_map *page_map)
                 return -ENOMEM;
         }
         global_cache_flush();
+#else
+        set_memory_uc((unsigned long)page_map->real, 1);
+        page_map->remapped = page_map->real;
+#endif
 
         for (i = 0; i < PAGE_SIZE / sizeof(unsigned long); i++) {
                 writel(agp_bridge->scratch_page, page_map->remapped+i);
@@ -63,8 +68,12 @@ static int amd_create_page_map(struct amd_page_map *page_map)
 
 static void amd_free_page_map(struct amd_page_map *page_map)
 {
+#ifndef CONFIG_X86
         iounmap(page_map->remapped);
         ClearPageReserved(virt_to_page(page_map->real));
+#else
+        set_memory_wb((unsigned long)page_map->real, 1);
+#endif
         free_page((unsigned long) page_map->real);
 }
 
diff --git a/drivers/char/agp/ati-agp.c b/drivers/char/agp/ati-agp.c
index 2d46b713c8f2..55c97f623242 100644
--- a/drivers/char/agp/ati-agp.c
+++ b/drivers/char/agp/ati-agp.c
@@ -60,18 +60,9 @@ static int ati_create_page_map(struct ati_page_map *page_map)
         if (page_map->real == NULL)
                 return -ENOMEM;
 
-        SetPageReserved(virt_to_page(page_map->real));
+        set_memory_uc((unsigned long)page_map->real, 1);
         err = map_page_into_agp(virt_to_page(page_map->real));
-        page_map->remapped = ioremap_nocache(virt_to_gart(page_map->real),
-                                            PAGE_SIZE);
-        if (page_map->remapped == NULL || err) {
-                ClearPageReserved(virt_to_page(page_map->real));
-                free_page((unsigned long) page_map->real);
-                page_map->real = NULL;
-                return -ENOMEM;
-        }
-        /*CACHE_FLUSH();*/
-        global_cache_flush();
+        page_map->remapped = page_map->real;
 
         for (i = 0; i < PAGE_SIZE / sizeof(unsigned long); i++) {
                 writel(agp_bridge->scratch_page, page_map->remapped+i);
@@ -85,8 +76,7 @@ static int ati_create_page_map(struct ati_page_map *page_map)
 static void ati_free_page_map(struct ati_page_map *page_map)
 {
         unmap_page_from_agp(virt_to_page(page_map->real));
-        iounmap(page_map->remapped);
-        ClearPageReserved(virt_to_page(page_map->real));
+        set_memory_wb((unsigned long)page_map->real, 1);
         free_page((unsigned long) page_map->real);
 }
 
diff --git a/drivers/char/agp/generic.c b/drivers/char/agp/generic.c
index 7484bc759c4c..7fc0c99a3a58 100644
--- a/drivers/char/agp/generic.c
+++ b/drivers/char/agp/generic.c
@@ -932,9 +932,14 @@ int agp_generic_create_gatt_table(struct agp_bridge_data *bridge)
         agp_gatt_table = (void *)table;
 
         bridge->driver->cache_flush();
+#ifdef CONFIG_X86
+        set_memory_uc((unsigned long)table, 1 << page_order);
+        bridge->gatt_table = (void *)table;
+#else
         bridge->gatt_table = ioremap_nocache(virt_to_gart(table),
                                         (PAGE_SIZE * (1 << page_order)));
         bridge->driver->cache_flush();
+#endif
 
         if (bridge->gatt_table == NULL) {
                 for (page = virt_to_page(table); page <= virt_to_page(table_end); page++)
@@ -991,7 +996,11 @@ int agp_generic_free_gatt_table(struct agp_bridge_data *bridge)
          * called, then all agp memory is deallocated and removed
          * from the table. */
 
+#ifdef CONFIG_X86
+        set_memory_wb((unsigned long)bridge->gatt_table, 1 << page_order);
+#else
         iounmap(bridge->gatt_table);
+#endif
         table = (char *) bridge->gatt_table_real;
         table_end = table + ((PAGE_SIZE * (1 << page_order)) - 1);
 
diff --git a/drivers/char/agp/sis-agp.c b/drivers/char/agp/sis-agp.c
index eb1a1c738190..b6791846809f 100644
--- a/drivers/char/agp/sis-agp.c
+++ b/drivers/char/agp/sis-agp.c
@@ -14,6 +14,9 @@
 #define SIS_TLBCNTRL    0x97
 #define SIS_TLBFLUSH    0x98
 
+#define PCI_DEVICE_ID_SI_662    0x0662
+#define PCI_DEVICE_ID_SI_671    0x0671
+
 static int __devinitdata agp_sis_force_delay = 0;
 static int __devinitdata agp_sis_agp_spec = -1;
 
@@ -27,8 +30,8 @@ static int sis_fetch_size(void)
         values = A_SIZE_8(agp_bridge->driver->aperture_sizes);
         for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) {
                 if ((temp_size == values[i].size_value) ||
-                    ((temp_size & ~(0x03)) ==
-                     (values[i].size_value & ~(0x03)))) {
+                    ((temp_size & ~(0x07)) ==
+                     (values[i].size_value & ~(0x07)))) {
                         agp_bridge->previous_size =
                             agp_bridge->current_size = (void *) (values + i);
 
@@ -214,6 +217,26 @@ static void __devexit agp_sis_remove(struct pci_dev *pdev)
         agp_put_bridge(bridge);
 }
 
+#ifdef CONFIG_PM
+
+static int agp_sis_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+        pci_save_state(pdev);
+        pci_set_power_state(pdev, pci_choose_state(pdev, state));
+
+        return 0;
+}
+
+static int agp_sis_resume(struct pci_dev *pdev)
+{
+        pci_set_power_state(pdev, PCI_D0);
+        pci_restore_state(pdev);
+
+        return sis_driver.configure();
+}
+
+#endif /* CONFIG_PM */
+
 static struct pci_device_id agp_sis_pci_table[] = {
         {
                 .class          = (PCI_CLASS_BRIDGE_HOST << 8),
@@ -331,6 +354,22 @@ static struct pci_device_id agp_sis_pci_table[] = {
                 .class          = (PCI_CLASS_BRIDGE_HOST << 8),
                 .class_mask     = ~0,
                 .vendor         = PCI_VENDOR_ID_SI,
+                .device         = PCI_DEVICE_ID_SI_662,
+                .subvendor      = PCI_ANY_ID,
+                .subdevice      = PCI_ANY_ID,
+        },
+        {
+                .class          = (PCI_CLASS_BRIDGE_HOST << 8),
+                .class_mask     = ~0,
+                .vendor         = PCI_VENDOR_ID_SI,
+                .device         = PCI_DEVICE_ID_SI_671,
+                .subvendor      = PCI_ANY_ID,
+                .subdevice      = PCI_ANY_ID,
+        },
+        {
+                .class          = (PCI_CLASS_BRIDGE_HOST << 8),
+                .class_mask     = ~0,
+                .vendor         = PCI_VENDOR_ID_SI,
                 .device         = PCI_DEVICE_ID_SI_730,
                 .subvendor      = PCI_ANY_ID,
                 .subdevice      = PCI_ANY_ID,
@@ -393,6 +432,10 @@ static struct pci_driver agp_sis_pci_driver = {
         .id_table       = agp_sis_pci_table,
         .probe          = agp_sis_probe,
         .remove         = agp_sis_remove,
+#ifdef CONFIG_PM
+        .suspend        = agp_sis_suspend,
+        .resume         = agp_sis_resume,
+#endif
 };
 
 static int __init agp_sis_init(void)
diff --git a/drivers/char/agp/sworks-agp.c b/drivers/char/agp/sworks-agp.c
index 551ef25063ef..e08934e58f32 100644
--- a/drivers/char/agp/sworks-agp.c
+++ b/drivers/char/agp/sworks-agp.c
@@ -52,28 +52,20 @@ static int serverworks_create_page_map(struct serverworks_page_map *page_map)
         if (page_map->real == NULL) {
                 return -ENOMEM;
         }
-        SetPageReserved(virt_to_page(page_map->real));
-        global_cache_flush();
-        page_map->remapped = ioremap_nocache(virt_to_gart(page_map->real),
-                                            PAGE_SIZE);
-        if (page_map->remapped == NULL) {
-                ClearPageReserved(virt_to_page(page_map->real));
-                free_page((unsigned long) page_map->real);
-                page_map->real = NULL;
-                return -ENOMEM;
-        }
-        global_cache_flush();
+
+        set_memory_uc((unsigned long)page_map->real, 1);
+        page_map->remapped = page_map->real;
 
         for (i = 0; i < PAGE_SIZE / sizeof(unsigned long); i++)
                 writel(agp_bridge->scratch_page, page_map->remapped+i);
+                /* Red Pen: Everyone else does pci posting flush here */
 
         return 0;
 }
 
 static void serverworks_free_page_map(struct serverworks_page_map *page_map)
 {
-        iounmap(page_map->remapped);
-        ClearPageReserved(virt_to_page(page_map->real));
+        set_memory_wb((unsigned long)page_map->real, 1);
         free_page((unsigned long) page_map->real);
 }