fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / drivers / char / agp / uninorth-agp.c

diff --git a/drivers/char/agp/uninorth-agp.c b/drivers/char/agp/uninorth-agp.c
index 50947e3..dffc193 100644 (file)
--- a/drivers/char/agp/uninorth-agp.c
+++ b/drivers/char/agp/uninorth-agp.c
@@ -27,32 +27,42 @@
 static int uninorth_rev;
 static int is_u3;
 
+static char __devinitdata *aperture = NULL;
 
 static int uninorth_fetch_size(void)
 {
-       int i;
-       u32 temp;
-       struct aper_size_info_32 *values;
-
-       pci_read_config_dword(agp_bridge->dev, UNI_N_CFG_GART_BASE, &temp);
-       temp &= ~(0xfffff000);
-       values = A_SIZE_32(agp_bridge->driver->aperture_sizes);
-
-       for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) {
-               if (temp == values[i].size_value) {
-                       agp_bridge->previous_size =
-                           agp_bridge->current_size = (void *) (values + i);
-                       agp_bridge->aperture_size_idx = i;
-                       return values[i].size;
+       int i, size = 0;
+       struct aper_size_info_32 *values =
+           A_SIZE_32(agp_bridge->driver->aperture_sizes);
+
+       if (aperture) {
+               char *save = aperture;
+
+               size = memparse(aperture, &aperture) >> 20;
+               aperture = save;
+
+               for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++)
+                       if (size == values[i].size)
+                               break;
+
+               if (i == agp_bridge->driver->num_aperture_sizes) {
+                       printk(KERN_ERR PFX "Invalid aperture size, using"
+                              " default\n");
+                       size = 0;
+                       aperture = NULL;
                }
        }
 
-       agp_bridge->previous_size =
-           agp_bridge->current_size = (void *) (values + 1);
-       agp_bridge->aperture_size_idx = 1;
-       return values[1].size;
+       if (!size) {
+               for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++)
+                       if (values[i].size == 32)
+                               break;
+       }
 
-       return 0;
+       agp_bridge->previous_size =
+           agp_bridge->current_size = (void *)(values + i);
+       agp_bridge->aperture_size_idx = i;
+       return values[i].size;
 }
 
 static void uninorth_tlbflush(struct agp_memory *mem)
@@ -95,12 +105,12 @@ static void uninorth_cleanup(void)
 static int uninorth_configure(void)
 {
        struct aper_size_info_32 *current_size;
-       
+
        current_size = A_SIZE_32(agp_bridge->current_size);
 
        printk(KERN_INFO PFX "configuring for size idx: %d\n",
               current_size->size_value);
-       
+
        /* aperture size and gatt addr */
        pci_write_config_dword(agp_bridge->dev,
                UNI_N_CFG_GART_BASE,
@@ -127,7 +137,7 @@ static int uninorth_configure(void)
                                       UNI_N_CFG_GART_DUMMY_PAGE,
                                       agp_bridge->scratch_page_real >> 12);
        }
-       
+
        return 0;
 }
 
@@ -162,7 +172,7 @@ static int uninorth_insert_memory(struct agp_memory *mem, off_t pg_start,
        }
        (void)in_le32((volatile u32*)&agp_bridge->gatt_table[pg_start]);
        mb();
-       flush_dcache_range((unsigned long)&agp_bridge->gatt_table[pg_start], 
+       flush_dcache_range((unsigned long)&agp_bridge->gatt_table[pg_start],
                (unsigned long)&agp_bridge->gatt_table[pg_start + mem->page_count]);
 
        uninorth_tlbflush(mem);
@@ -235,7 +245,7 @@ static void uninorth_agp_enable(struct agp_bridge_data *bridge, u32 mode)
 
        command = agp_collect_device_status(bridge, mode, status);
        command |= PCI_AGP_COMMAND_AGP;
-       
+
        if (uninorth_rev == 0x21) {
                /*
                 * Darwin disable AGP 4x on this revision, thus we
@@ -329,7 +339,7 @@ static int agp_uninorth_suspend(struct pci_dev *pdev)
        /* turn off AGP on the bridge */
        agp = pci_find_capability(pdev, PCI_CAP_ID_AGP);
        pci_read_config_dword(pdev, agp + PCI_AGP_COMMAND, &cmd);
-       bridge->dev_private_data = (void *)cmd;
+       bridge->dev_private_data = (void *)(long)cmd;
        if (cmd & PCI_AGP_COMMAND_AGP) {
                printk("uninorth-agp: disabling AGP on bridge %s\n",
                                pci_name(pdev));
@@ -351,7 +361,7 @@ static int agp_uninorth_resume(struct pci_dev *pdev)
        if (bridge == NULL)
                return -ENODEV;
 
-       command = (u32)bridge->dev_private_data;
+       command = (long)bridge->dev_private_data;
        bridge->dev_private_data = NULL;
        if (!(command & PCI_AGP_COMMAND_AGP))
                return 0;
@@ -456,7 +466,7 @@ static struct aper_size_info_32 uninorth_sizes[7] =
        {256, 65536, 6, 64},
        {128, 32768, 5, 32},
        {64, 16384, 4, 16},
-#endif 
+#endif
        {32, 8192, 3, 8},
        {16, 4096, 2, 4},
        {8, 2048, 1, 2},
@@ -601,8 +611,8 @@ static int __devinit agp_uninorth_probe(struct pci_dev *pdev,
                uninorth_node = of_find_node_by_name(NULL, "u3");
        }
        if (uninorth_node) {
-               int *revprop = (int *)
-                       get_property(uninorth_node, "device-rev", NULL);
+               const int *revprop = get_property(uninorth_node,
+                               "device-rev", NULL);
                if (revprop != NULL)
                        uninorth_rev = *revprop & 0x3f;
                of_node_put(uninorth_node);
@@ -683,5 +693,11 @@ static void __exit agp_uninorth_cleanup(void)
 module_init(agp_uninorth_init);
 module_exit(agp_uninorth_cleanup);
 
+module_param(aperture, charp, 0);
+MODULE_PARM_DESC(aperture,
+                "Aperture size, must be power of two between 4MB and an\n"
+                "\t\tupper limit specific to the UniNorth revision.\n"
+                "\t\tDefault: 32M");
+
 MODULE_AUTHOR("Ben Herrenschmidt & Paul Mackerras");
 MODULE_LICENSE("GPL");