radeon: Fix CP byte order on big endian architectures with KMS.

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

radeon: Fix CP byte order on big endian architectures with KMS.
Signed-off-by: N Dave Airlie <airlied@redhat.com>
4e484e7d · Michel Dänzer · Dave Airlie · 62369028 · 4e484e7d · 4e484e7d
隐藏空白更改
内联并排

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drivers/gpu/drm/radeon/r100.c drivers/gpu/drm/radeon/r100.c +3 -0

drivers/gpu/drm/radeon/radeon_reg.h drivers/gpu/drm/radeon/radeon_reg.h +1 -0

未找到文件。
--- a/drivers/gpu/drm/radeon/r100.c
+++ b/drivers/gpu/drm/radeon/r100.c
@@ -551,6 +551,9 @@ int r100_cp_init(struct radeon_device *rdev, unsigned ring_size)
 	/* cp setup */
 	WREG32(0x718, pre_write_timer | (pre_write_limit << 28));
 	WREG32(RADEON_CP_RB_CNTL,
+#ifdef __BIG_ENDIAN
+	       RADEON_BUF_SWAP_32BIT |
+#endif
 	       REG_SET(RADEON_RB_BUFSZ, rb_bufsz) |
 	       REG_SET(RADEON_RB_BLKSZ, rb_blksz) |
 	       REG_SET(RADEON_MAX_FETCH, max_fetch) |

--- a/drivers/gpu/drm/radeon/radeon_reg.h
+++ b/drivers/gpu/drm/radeon/radeon_reg.h
@@ -3184,6 +3184,7 @@
 #	define RADEON_RB_BUFSZ_MASK		(0x3f << 0)
 #	define RADEON_RB_BLKSZ_SHIFT		8
 #	define RADEON_RB_BLKSZ_MASK		(0x3f << 8)
+#	define RADEON_BUF_SWAP_32BIT		(1 << 17)
 #	define RADEON_MAX_FETCH_SHIFT		18
 #	define RADEON_MAX_FETCH_MASK		(0x3 << 18)
 #	define RADEON_RB_NO_UPDATE		(1 << 27)