Dear Chris:
what do u mean " blit between snooped and unsnooped memory"?
It seems you want to map user-space pixmap to GTT space, and use 2d
copy to do upload/download?
TTM can map user space memory to GTT aperture by using
"ttm_bo_type_user", but no dirver use it yet.??
Thanks
2011/1/8 Chris
On Wed, 12 Jan 2011 15:40:33 +0800, april wrote:
> Dear Chris:
>
> what do u mean " blit between snooped and unsnooped memory"?
> It seems you want to map user-space pixmap to GTT space, and use 2d
> copy to do upload/download?
Yes, and sample from snooped memory for some operations.
> TTM can
On Wed, 12 Jan 2011 15:40:33 +0800, april wrote:
> Dear Chris:
>
> what do u mean " blit between snooped and unsnooped memory"?
> It seems you want to map user-space pixmap to GTT space, and use 2d
> copy to do upload/download?
Yes, and sample from snooped memory for some operations.
> TTM ca
Dear Chris:
what do u mean " blit between snooped and unsnooped memory"?
It seems you want to map user-space pixmap to GTT space, and use 2d
copy to do upload/download?
TTM can map user space memory to GTT aperture by using
"ttm_bo_type_user", but no dirver use it yet.??
Thanks
2011/1/8 Chris
On Sat, Jan 8, 2011 at 2:07 AM, Chris Wilson wrote:
> I've been looking at how we can improve upload/download performance on our
> UMA gfx. One under-used aspect of the IGP is its ability to blit between
> snooped-and-unsnooped memory i.e. from normal ram into the GTT. Only the
> BLT has this abil
On Sat, Jan 8, 2011 at 2:07 AM, Chris Wilson
wrote:
> I've been looking at how we can improve upload/download performance on our
> UMA gfx. One under-used aspect of the IGP is its ability to blit between
> snooped-and-unsnooped memory i.e. from normal ram into the GTT. Only the
> BLT has this abi
I've been looking at how we can improve upload/download performance on our
UMA gfx. One under-used aspect of the IGP is its ability to blit between
snooped-and-unsnooped memory i.e. from normal ram into the GTT. Only the
BLT has this ability, almost all other functions of the GPU most be from
unsno
I've been looking at how we can improve upload/download performance on our
UMA gfx. One under-used aspect of the IGP is its ability to blit between
snooped-and-unsnooped memory i.e. from normal ram into the GTT. Only the
BLT has this ability, almost all other functions of the GPU most be from
unsno