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Diffstat (limited to 'drivers/gpu/drm/radeon/r300.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/r300.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/r300.c b/drivers/gpu/drm/radeon/r300.c index 08d68f3e13e9..718b12b03b57 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); |