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    SubjectRe: [PATCH V3 11/16] drm/radeon: Make radeon card usable for Loongson.
    Date

    Hi,

    Huacai Chen <chenhuacai@gmail.com> writes:

    > 1, Handle io prot correctly for MIPS.
    > 2, Define SAREA_MAX as the size of one page.
    > 3, Don't use swiotlb on Loongson machines (Loonson need swioitlb, but
    > when use swiotlb, GPU reset occurs at resume from suspend).
    >
    > Signed-off-by: Huacai Chen <chenhc@lemote.com>
    > Signed-off-by: Hongliang Tao <taohl@lemote.com>
    > Signed-off-by: Hua Yan <yanh@lemote.com>
    > Reviewed-by: Michel Dänzer <michel@daenzer.net>
    > Reviewed-by: Alex Deucher <alexdeucher@gmail.com>
    > Reviewed-by: Lucas Stach <dev@lynxeye.de>
    > Reviewed-by: j.glisse <j.glisse@gmail.com>
    > Cc: dri-devel@lists.freedesktop.org
    > ---
    > drivers/gpu/drm/drm_vm.c | 2 +-
    > drivers/gpu/drm/radeon/radeon_ttm.c | 6 +++---
    > drivers/gpu/drm/ttm/ttm_bo_util.c | 2 +-
    > include/drm/drm_sarea.h | 2 ++
    > 4 files changed, 7 insertions(+), 5 deletions(-)
    >
    > diff --git a/drivers/gpu/drm/drm_vm.c b/drivers/gpu/drm/drm_vm.c
    > index 961ee08..3f06166 100644
    > --- a/drivers/gpu/drm/drm_vm.c
    > +++ b/drivers/gpu/drm/drm_vm.c
    > @@ -62,7 +62,7 @@ static pgprot_t drm_io_prot(uint32_t map_type, struct vm_area_struct *vma)
    > tmp = pgprot_writecombine(tmp);
    > else
    > tmp = pgprot_noncached(tmp);
    > -#elif defined(__sparc__) || defined(__arm__)
    > +#elif defined(__sparc__) || defined(__arm__) || defined(__mips__)
    > tmp = pgprot_noncached(tmp);

    btw, would it be a good idea to use uncached accelerated instead ?

    Arnaud
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