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path: root/drivers/char/drm/ati_pcigart.c
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Diffstat (limited to 'drivers/char/drm/ati_pcigart.c')
-rw-r--r--drivers/char/drm/ati_pcigart.c123
1 files changed, 63 insertions, 60 deletions
diff --git a/drivers/char/drm/ati_pcigart.c b/drivers/char/drm/ati_pcigart.c
index 957596c63934..d07ce96e9f4b 100644
--- a/drivers/char/drm/ati_pcigart.c
+++ b/drivers/char/drm/ati_pcigart.c
@@ -1,5 +1,5 @@
/**
- * \file ati_pcigart.h
+ * \file ati_pcigart.c
* ATI PCI GART support
*
* \author Gareth Hughes <gareth@valinux.com>
@@ -52,87 +52,91 @@
# define ATI_MAX_PCIGART_PAGES 8192 /**< 32 MB aperture, 4K pages */
# define ATI_PCIGART_PAGE_SIZE 4096 /**< PCI GART page size */
-static unsigned long drm_ati_alloc_pcigart_table( void )
+static unsigned long drm_ati_alloc_pcigart_table(void)
{
unsigned long address;
struct page *page;
int i;
- DRM_DEBUG( "%s\n", __FUNCTION__ );
+ DRM_DEBUG("%s\n", __FUNCTION__);
- address = __get_free_pages( GFP_KERNEL, ATI_PCIGART_TABLE_ORDER );
- if ( address == 0UL ) {
+ address = __get_free_pages(GFP_KERNEL, ATI_PCIGART_TABLE_ORDER);
+ if (address == 0UL) {
return 0;
}
- page = virt_to_page( address );
+ page = virt_to_page(address);
- for ( i = 0 ; i < ATI_PCIGART_TABLE_PAGES ; i++, page++ ) {
+ for (i = 0; i < ATI_PCIGART_TABLE_PAGES; i++, page++) {
get_page(page);
- SetPageReserved( page );
+ SetPageReserved(page);
}
- DRM_DEBUG( "%s: returning 0x%08lx\n", __FUNCTION__, address );
+ DRM_DEBUG("%s: returning 0x%08lx\n", __FUNCTION__, address);
return address;
}
-static void drm_ati_free_pcigart_table( unsigned long address )
+static void drm_ati_free_pcigart_table(unsigned long address)
{
struct page *page;
int i;
- DRM_DEBUG( "%s\n", __FUNCTION__ );
+ DRM_DEBUG("%s\n", __FUNCTION__);
- page = virt_to_page( address );
+ page = virt_to_page(address);
- for ( i = 0 ; i < ATI_PCIGART_TABLE_PAGES ; i++, page++ ) {
+ for (i = 0; i < ATI_PCIGART_TABLE_PAGES; i++, page++) {
__put_page(page);
- ClearPageReserved( page );
+ ClearPageReserved(page);
}
- free_pages( address, ATI_PCIGART_TABLE_ORDER );
+ free_pages(address, ATI_PCIGART_TABLE_ORDER);
}
-int drm_ati_pcigart_cleanup(drm_device_t *dev, drm_ati_pcigart_info *gart_info)
+int drm_ati_pcigart_cleanup(drm_device_t * dev,
+ drm_ati_pcigart_info * gart_info)
{
drm_sg_mem_t *entry = dev->sg;
unsigned long pages;
int i;
/* we need to support large memory configurations */
- if ( !entry ) {
- DRM_ERROR( "no scatter/gather memory!\n" );
+ if (!entry) {
+ DRM_ERROR("no scatter/gather memory!\n");
return 0;
}
if (gart_info->bus_addr) {
- if (gart_info->gart_table_location==DRM_ATI_GART_MAIN) {
+ if (gart_info->gart_table_location == DRM_ATI_GART_MAIN) {
pci_unmap_single(dev->pdev, gart_info->bus_addr,
ATI_PCIGART_TABLE_PAGES * PAGE_SIZE,
PCI_DMA_TODEVICE);
}
- pages = ( entry->pages <= ATI_MAX_PCIGART_PAGES )
- ? entry->pages : ATI_MAX_PCIGART_PAGES;
+ pages = (entry->pages <= ATI_MAX_PCIGART_PAGES)
+ ? entry->pages : ATI_MAX_PCIGART_PAGES;
- for ( i = 0 ; i < pages ; i++ ) {
- if ( !entry->busaddr[i] ) break;
+ for (i = 0; i < pages; i++) {
+ if (!entry->busaddr[i])
+ break;
pci_unmap_single(dev->pdev, entry->busaddr[i],
PAGE_SIZE, PCI_DMA_TODEVICE);
}
-
- if (gart_info->gart_table_location==DRM_ATI_GART_MAIN)
- gart_info->bus_addr=0;
+
+ if (gart_info->gart_table_location == DRM_ATI_GART_MAIN)
+ gart_info->bus_addr = 0;
}
- if (gart_info->gart_table_location==DRM_ATI_GART_MAIN && gart_info->addr) {
+ if (gart_info->gart_table_location == DRM_ATI_GART_MAIN
+ && gart_info->addr) {
drm_ati_free_pcigart_table(gart_info->addr);
- gart_info->addr=0;
+ gart_info->addr = 0;
}
return 1;
}
+
EXPORT_SYMBOL(drm_ati_pcigart_cleanup);
-int drm_ati_pcigart_init(drm_device_t *dev, drm_ati_pcigart_info *gart_info)
+int drm_ati_pcigart_init(drm_device_t * dev, drm_ati_pcigart_info * gart_info)
{
drm_sg_mem_t *entry = dev->sg;
unsigned long address = 0;
@@ -140,58 +144,56 @@ int drm_ati_pcigart_init(drm_device_t *dev, drm_ati_pcigart_info *gart_info)
u32 *pci_gart, page_base, bus_address = 0;
int i, j, ret = 0;
- if ( !entry ) {
- DRM_ERROR( "no scatter/gather memory!\n" );
+ if (!entry) {
+ DRM_ERROR("no scatter/gather memory!\n");
goto done;
}
- if (gart_info->gart_table_location == DRM_ATI_GART_MAIN)
- {
+ if (gart_info->gart_table_location == DRM_ATI_GART_MAIN) {
DRM_DEBUG("PCI: no table in VRAM: using normal RAM\n");
-
+
address = drm_ati_alloc_pcigart_table();
- if ( !address ) {
- DRM_ERROR( "cannot allocate PCI GART page!\n" );
+ if (!address) {
+ DRM_ERROR("cannot allocate PCI GART page!\n");
goto done;
}
-
- if ( !dev->pdev ) {
- DRM_ERROR( "PCI device unknown!\n" );
+
+ if (!dev->pdev) {
+ DRM_ERROR("PCI device unknown!\n");
goto done;
}
bus_address = pci_map_single(dev->pdev, (void *)address,
- ATI_PCIGART_TABLE_PAGES * PAGE_SIZE,
- PCI_DMA_TODEVICE);
+ ATI_PCIGART_TABLE_PAGES *
+ PAGE_SIZE, PCI_DMA_TODEVICE);
if (bus_address == 0) {
- DRM_ERROR( "unable to map PCIGART pages!\n" );
- drm_ati_free_pcigart_table( address );
+ DRM_ERROR("unable to map PCIGART pages!\n");
+ drm_ati_free_pcigart_table(address);
address = 0;
goto done;
}
- }
- else
- {
+ } else {
address = gart_info->addr;
bus_address = gart_info->bus_addr;
- DRM_DEBUG("PCI: Gart Table: VRAM %08X mapped at %08lX\n", bus_address, address);
+ DRM_DEBUG("PCI: Gart Table: VRAM %08X mapped at %08lX\n",
+ bus_address, address);
}
- pci_gart = (u32 *)address;
+ pci_gart = (u32 *) address;
- pages = ( entry->pages <= ATI_MAX_PCIGART_PAGES )
- ? entry->pages : ATI_MAX_PCIGART_PAGES;
+ pages = (entry->pages <= ATI_MAX_PCIGART_PAGES)
+ ? entry->pages : ATI_MAX_PCIGART_PAGES;
- memset( pci_gart, 0, ATI_MAX_PCIGART_PAGES * sizeof(u32) );
+ memset(pci_gart, 0, ATI_MAX_PCIGART_PAGES * sizeof(u32));
- for ( i = 0 ; i < pages ; i++ ) {
+ for (i = 0; i < pages; i++) {
/* we need to support large memory configurations */
entry->busaddr[i] = pci_map_single(dev->pdev,
- page_address( entry->pagelist[i] ),
- PAGE_SIZE,
- PCI_DMA_TODEVICE);
+ page_address(entry->
+ pagelist[i]),
+ PAGE_SIZE, PCI_DMA_TODEVICE);
if (entry->busaddr[i] == 0) {
- DRM_ERROR( "unable to map PCIGART pages!\n" );
+ DRM_ERROR("unable to map PCIGART pages!\n");
drm_ati_pcigart_cleanup(dev, gart_info);
address = 0;
bus_address = 0;
@@ -201,9 +203,9 @@ int drm_ati_pcigart_init(drm_device_t *dev, drm_ati_pcigart_info *gart_info)
for (j = 0; j < (PAGE_SIZE / ATI_PCIGART_PAGE_SIZE); j++) {
if (gart_info->is_pcie)
- *pci_gart = (cpu_to_le32(page_base)>>8) | 0xc;
+ *pci_gart = (cpu_to_le32(page_base) >> 8) | 0xc;
else
- *pci_gart++ = cpu_to_le32( page_base );
+ *pci_gart++ = cpu_to_le32(page_base);
page_base += ATI_PCIGART_PAGE_SIZE;
}
}
@@ -216,9 +218,10 @@ int drm_ati_pcigart_init(drm_device_t *dev, drm_ati_pcigart_info *gart_info)
mb();
#endif
-done:
+ done:
gart_info->addr = address;
- gart_info->bus_addr = bus_address;
+ gart_info->bus_addr = bus_address;
return ret;
}
+
EXPORT_SYMBOL(drm_ati_pcigart_init);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-24 18:42:45 +0100