提交 8624ecbf 编写于 作者: M Michel Dänzer 提交者: Dave Airlie

drm: radeon: implement RADEON_PARAM_SCRATCH_OFFSET getparam

When this succeeds, userspace can read the scratch register contents from th    mapped writeback page directly.
Signed-off-by: NDave Airlie <airlied@linux.ie>
上级 9ca94161
无相关合并请求
......@@ -2987,7 +2987,11 @@ static int radeon_cp_getparam(DRM_IOCTL_ARGS)
case RADEON_PARAM_GART_TEX_HANDLE:
value = dev_priv->gart_textures_offset;
break;
case RADEON_PARAM_SCRATCH_OFFSET:
if (!dev_priv->writeback_works)
return DRM_ERR(EINVAL);
value = RADEON_SCRATCH_REG_OFFSET;
break;
case RADEON_PARAM_CARD_TYPE:
if (dev_priv->flags & CHIP_IS_PCIE)
value = RADEON_CARD_PCIE;
......
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