drm/radeon/kms: clear confusion in GART init/deinit path
GART static one time initialization was mixed up with GART
enabling/disabling which could happen several time for instance
during suspend/resume cycles. This patch splits all GART
handling into 4 differents function. gart_init is for one
time initialization, gart_deinit is called upon module unload
to free resources allocated by gart_init, gart_enable enable
the GART and is intented to be call after first initialization
and at each resume cycle or reset cycle. Finaly gart_disable
stop the GART and is intended to be call at suspend time or
when unloading the module.
Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/r300.c b/drivers/gpu/drm/radeon/r300.c
index ced3322..bb151ec 100644
--- a/drivers/gpu/drm/radeon/r300.c
+++ b/drivers/gpu/drm/radeon/r300.c
@@ -42,7 +42,6 @@
int r100_rb2d_reset(struct radeon_device *rdev);
int r100_cp_init(struct radeon_device *rdev, unsigned ring_size);
int r100_pci_gart_enable(struct radeon_device *rdev);
-void r100_pci_gart_disable(struct radeon_device *rdev);
void r100_mc_setup(struct radeon_device *rdev);
void r100_mc_disable_clients(struct radeon_device *rdev);
int r100_gui_wait_for_idle(struct radeon_device *rdev);
@@ -86,26 +85,57 @@
mb();
}
+int rv370_pcie_gart_set_page(struct radeon_device *rdev, int i, uint64_t addr)
+{
+ void __iomem *ptr = (void *)rdev->gart.table.vram.ptr;
+
+ if (i < 0 || i > rdev->gart.num_gpu_pages) {
+ return -EINVAL;
+ }
+ addr = (lower_32_bits(addr) >> 8) |
+ ((upper_32_bits(addr) & 0xff) << 24) |
+ 0xc;
+ /* on x86 we want this to be CPU endian, on powerpc
+ * on powerpc without HW swappers, it'll get swapped on way
+ * into VRAM - so no need for cpu_to_le32 on VRAM tables */
+ writel(addr, ((void __iomem *)ptr) + (i * 4));
+ return 0;
+}
+
+int rv370_pcie_gart_init(struct radeon_device *rdev)
+{
+ int r;
+
+ if (rdev->gart.table.vram.robj) {
+ WARN(1, "RV370 PCIE GART already initialized.\n");
+ return 0;
+ }
+ /* Initialize common gart structure */
+ r = radeon_gart_init(rdev);
+ if (r)
+ return r;
+ r = rv370_debugfs_pcie_gart_info_init(rdev);
+ if (r)
+ DRM_ERROR("Failed to register debugfs file for PCIE gart !\n");
+ rdev->gart.table_size = rdev->gart.num_gpu_pages * 4;
+ rdev->asic->gart_tlb_flush = &rv370_pcie_gart_tlb_flush;
+ rdev->asic->gart_set_page = &rv370_pcie_gart_set_page;
+ return radeon_gart_table_vram_alloc(rdev);
+}
+
int rv370_pcie_gart_enable(struct radeon_device *rdev)
{
uint32_t table_addr;
uint32_t tmp;
int r;
- /* Initialize common gart structure */
- r = radeon_gart_init(rdev);
- if (r) {
+ if (rdev->gart.table.vram.robj == NULL) {
+ dev_err(rdev->dev, "No VRAM object for PCIE GART.\n");
+ return -EINVAL;
+ }
+ r = radeon_gart_table_vram_pin(rdev);
+ if (r)
return r;
- }
- r = rv370_debugfs_pcie_gart_info_init(rdev);
- if (r) {
- DRM_ERROR("Failed to register debugfs file for PCIE gart !\n");
- }
- rdev->gart.table_size = rdev->gart.num_gpu_pages * 4;
- r = radeon_gart_table_vram_alloc(rdev);
- if (r) {
- return r;
- }
/* discard memory request outside of configured range */
tmp = RADEON_PCIE_TX_GART_UNMAPPED_ACCESS_DISCARD;
WREG32_PCIE(RADEON_PCIE_TX_GART_CNTL, tmp);
@@ -145,51 +175,13 @@
}
}
-int rv370_pcie_gart_set_page(struct radeon_device *rdev, int i, uint64_t addr)
+void rv370_pcie_gart_fini(struct radeon_device *rdev)
{
- void __iomem *ptr = (void *)rdev->gart.table.vram.ptr;
-
- if (i < 0 || i > rdev->gart.num_gpu_pages) {
- return -EINVAL;
- }
- addr = (lower_32_bits(addr) >> 8) |
- ((upper_32_bits(addr) & 0xff) << 24) |
- 0xc;
- /* on x86 we want this to be CPU endian, on powerpc
- * on powerpc without HW swappers, it'll get swapped on way
- * into VRAM - so no need for cpu_to_le32 on VRAM tables */
- writel(addr, ((void __iomem *)ptr) + (i * 4));
- return 0;
+ rv370_pcie_gart_disable(rdev);
+ radeon_gart_table_vram_free(rdev);
+ radeon_gart_fini(rdev);
}
-int r300_gart_enable(struct radeon_device *rdev)
-{
-#if __OS_HAS_AGP
- if (rdev->flags & RADEON_IS_AGP) {
- if (rdev->family > CHIP_RV350) {
- rv370_pcie_gart_disable(rdev);
- } else {
- r100_pci_gart_disable(rdev);
- }
- return 0;
- }
-#endif
- if (rdev->flags & RADEON_IS_PCIE) {
- rdev->asic->gart_disable = &rv370_pcie_gart_disable;
- rdev->asic->gart_tlb_flush = &rv370_pcie_gart_tlb_flush;
- rdev->asic->gart_set_page = &rv370_pcie_gart_set_page;
- return rv370_pcie_gart_enable(rdev);
- }
- if (rdev->flags & RADEON_IS_PCI) {
- rdev->asic->gart_disable = &r100_pci_gart_disable;
- rdev->asic->gart_tlb_flush = &r100_pci_gart_tlb_flush;
- rdev->asic->gart_set_page = &r100_pci_gart_set_page;
- return r100_pci_gart_enable(rdev);
- }
- return r100_pci_gart_enable(rdev);
-}
-
-
/*
* MC
*/
@@ -237,14 +229,6 @@
void r300_mc_fini(struct radeon_device *rdev)
{
- if (rdev->flags & RADEON_IS_PCIE) {
- rv370_pcie_gart_disable(rdev);
- radeon_gart_table_vram_free(rdev);
- } else {
- r100_pci_gart_disable(rdev);
- radeon_gart_table_ram_free(rdev);
- }
- radeon_gart_fini(rdev);
}
@@ -1299,8 +1283,6 @@
/* Stops all mc clients */
r100_mc_stop(rdev, &save);
- /* Shutdown PCI/PCIE GART */
- radeon_gart_disable(rdev);
if (rdev->flags & RADEON_IS_AGP) {
WREG32(R_00014C_MC_AGP_LOCATION,
S_00014C_MC_AGP_START(rdev->mc.gtt_start >> 16) |