drm/radeon/kms: fix some GART table entry bugs.

1. rv370 can accept 40-bit addresses - also at 24-bit shift not 4 bits
2. rs480 table can be in 40-bit space. - 4 bit shift for top 8 bits
3. rs480 table entries can be in 40-bit space.

Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/radeon/r100.c

@@ -110,7 +110,7 @@ int r100_pci_gart_set_page(struct radeon_device *rdev, int i, uint64_t addr)
 	if (i < 0 || i > rdev->gart.num_gpu_pages) {
 		return -EINVAL;
 	}
-	rdev->gart.table.ram.ptr[i] = cpu_to_le32((uint32_t)addr);
+	rdev->gart.table.ram.ptr[i] = cpu_to_le32(lower_32_bits(addr));
 	return 0;
 }
 

drivers/gpu/drm/radeon/r300.c

@@ -150,7 +150,9 @@ int rv370_pcie_gart_set_page(struct radeon_device *rdev, int i, uint64_t addr)
 	if (i < 0 || i > rdev->gart.num_gpu_pages) {
 		return -EINVAL;
 	}
-	addr = (((u32)addr) >> 8) | ((upper_32_bits(addr) & 0xff) << 4) | 0xC;
+	addr = (lower_32_bits(addr) >> 8) |
+	       ((upper_32_bits(addr) & 0xff) << 24) |
+	       0xc;
 	writel(cpu_to_le32(addr), ((void __iomem *)ptr) + (i * 4));
 	return 0;
 }

drivers/gpu/drm/radeon/radeon_gart.c

@@ -177,7 +177,7 @@ int radeon_gart_bind(struct radeon_device *rdev, unsigned offset,
 			return -ENOMEM;
 		}
 		rdev->gart.pages[p] = pagelist[i];
-		page_base = (uint32_t)rdev->gart.pages_addr[p];
+		page_base = rdev->gart.pages_addr[p];
 		for (j = 0; j < (PAGE_SIZE / 4096); j++, t++) {
 			radeon_gart_set_page(rdev, t, page_base);
 			page_base += 4096;

drivers/gpu/drm/radeon/rs400.c

@@ -164,7 +164,9 @@ int rs400_gart_enable(struct radeon_device *rdev)
 		WREG32(RADEON_BUS_CNTL, tmp);
 	}
 	/* Table should be in 32bits address space so ignore bits above. */
-	tmp = rdev->gart.table_addr & 0xfffff000;
+	tmp = (u32)rdev->gart.table_addr & 0xfffff000;
+	tmp |= (upper_32_bits(rdev->gart.table_addr) & 0xff) << 4;
+
 	WREG32_MC(RS480_GART_BASE, tmp);
 	/* TODO: more tweaking here */
 	WREG32_MC(RS480_GART_FEATURE_ID,
@@ -201,10 +203,17 @@ void rs400_gart_disable(struct radeon_device *rdev)
 
 int rs400_gart_set_page(struct radeon_device *rdev, int i, uint64_t addr)
 {
+	uint32_t entry;
+
 	if (i < 0 || i > rdev->gart.num_gpu_pages) {
 		return -EINVAL;
 	}
-	rdev->gart.table.ram.ptr[i] = cpu_to_le32(((uint32_t)addr) | 0xC);
+
+	entry = (lower_32_bits(addr) & PAGE_MASK) |
+		((upper_32_bits(addr) & 0xff) << 4) |
+		0xc;
+	entry = cpu_to_le32(entry);
+	rdev->gart.table.ram.ptr[i] = entry;
 	return 0;
 }