+uint32_t r100_mm_rreg_slow(struct radeon_device *rdev, uint32_t reg)
+{
+ unsigned long flags;
+ uint32_t ret;
+
+ spin_lock_irqsave(&rdev->mmio_idx_lock, flags);
+ writel(reg, ((void __iomem *)rdev->rmmio) + RADEON_MM_INDEX);
+ ret = readl(((void __iomem *)rdev->rmmio) + RADEON_MM_DATA);
+ spin_unlock_irqrestore(&rdev->mmio_idx_lock, flags);
+ return ret;
+}
+
+void r100_mm_wreg_slow(struct radeon_device *rdev, uint32_t reg, uint32_t v)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&rdev->mmio_idx_lock, flags);
+ writel(reg, ((void __iomem *)rdev->rmmio) + RADEON_MM_INDEX);
+ writel(v, ((void __iomem *)rdev->rmmio) + RADEON_MM_DATA);
+ spin_unlock_irqrestore(&rdev->mmio_idx_lock, flags);
+}
+