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path: root/drivers/gpu/drm/radeon/r300.c
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Diffstat (limited to 'drivers/gpu/drm/radeon/r300.c')
-rw-r--r--drivers/gpu/drm/radeon/r300.c25
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/r300.c b/drivers/gpu/drm/radeon/r300.c
index 08d68f3e1..718b12b03 100644
--- a/drivers/gpu/drm/radeon/r300.c
+++ b/drivers/gpu/drm/radeon/r300.c
@@ -50,6 +50,31 @@
*/
/*
+ * Indirect registers accessor
+ */
+uint32_t rv370_pcie_rreg(struct radeon_device *rdev, uint32_t reg)
+{
+ unsigned long flags;
+ uint32_t r;
+
+ spin_lock_irqsave(&rdev->pcie_idx_lock, flags);
+ WREG32(RADEON_PCIE_INDEX, ((reg) & rdev->pcie_reg_mask));
+ r = RREG32(RADEON_PCIE_DATA);
+ spin_unlock_irqrestore(&rdev->pcie_idx_lock, flags);
+ return r;
+}
+
+void rv370_pcie_wreg(struct radeon_device *rdev, uint32_t reg, uint32_t v)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&rdev->pcie_idx_lock, flags);
+ WREG32(RADEON_PCIE_INDEX, ((reg) & rdev->pcie_reg_mask));
+ WREG32(RADEON_PCIE_DATA, (v));
+ spin_unlock_irqrestore(&rdev->pcie_idx_lock, flags);
+}
+
+/*
* rv370,rv380 PCIE GART
*/
static int rv370_debugfs_pcie_gart_info_init(struct radeon_device *rdev);