On 06.12.2015 08:29, Oded Gabbay wrote:
On Sat, Dec 5, 2015 at 12:23 PM, Christian König
<deathsimple@xxxxxxxxxxx> wrote:
Patch #1 & #2 are Reviewed-by: Christian König <christian.koenig@xxxxxxx>
For patch #3:
Couldn't we just in a loop go over all the dw in the IB and swap them after
writing them? That would simplify the patch massively.
I guess we could do that, however I made the fix similar to the same
code in the uvd module (See radeon_uvd_get_create_msg() for example)
And line like the one below just look a bit odd to me:
for (i = ib.length_dw; i < ib_size_dw; ++i)
- ib.ptr[i] = 0x0;
+ ib.ptr[i] = cpu_to_le32(0x0);
Same remark as above. I added it in the last second before sending the
patch just to be similar to uvd code. I guess maybe it is to remind
people to do it if they ever change that zero value to something else
???
Alternatively a helper function adding DW to an IB with swapping could do it
as well.
Don't you think its an overkill ? It's just a few places in the code.
Yeah, true indeed. Ok then let's just stick with the coding style like
it is in radeon_uvd_get_create_msg().
So the patch is Reviewed-by: Christian König <christian.koenig@xxxxxxx>.
It sound like you have hardware to test this combination, so could you
try to get it working on for amdgpu as well?
Shouldn't be to much of a hassle, since amdgpu only supports CIK and VI
generation for now and I think we never enabled the hardware swapping in
amdgpu.
Thanks in advance,
Christian.
Regards,
Christian.
On 04.12.2015 22:09, Oded Gabbay wrote:
This patch makes the IB test on the GFX ring pass for CI-based cards
installed in Big-Endian machines.
Signed-off-by: Oded Gabbay <oded.gabbay@xxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
---
drivers/gpu/drm/radeon/cik.c | 6 +-----
1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c
index 248953d..05d43a0 100644
--- a/drivers/gpu/drm/radeon/cik.c
+++ b/drivers/gpu/drm/radeon/cik.c
@@ -4173,11 +4173,7 @@ void cik_ring_ib_execute(struct radeon_device
*rdev, struct radeon_ib *ib)
control |= ib->length_dw | (vm_id << 24);
radeon_ring_write(ring, header);
- radeon_ring_write(ring,
-#ifdef __BIG_ENDIAN
- (2 << 0) |
-#endif
- (ib->gpu_addr & 0xFFFFFFFC));
+ radeon_ring_write(ring, (ib->gpu_addr & 0xFFFFFFFC));
radeon_ring_write(ring, upper_32_bits(ib->gpu_addr) & 0xFFFF);
radeon_ring_write(ring, control);
}
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