search for: 78597da6313a

...uffers > - squash multiple patches into this > > drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c b/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c > index 78597da6313a..d0538af1b967 100644 > --- a/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c > +++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c > @@ -105,6 +105,11 @@ nvkm_device_tegra_probe_iommu(struct nvkm_device_tegra *tdev) > unsigned long pgsize_bitmap; > int ret; > >...

...>>> >>> drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c | 5 +++++ >>> 1 file changed, 5 insertions(+) >>> >>> diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c b/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c >>> index 78597da6313a..d0538af1b967 100644 >>> --- a/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c >>> +++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c >>> @@ -105,6 +105,11 @@ nvkm_device_tegra_probe_iommu(struct nvkm_device_tegra *tdev) >>> unsigned long pgsize_bitm...

From: Thierry Reding <treding at nvidia.com> An unfortunate interaction between the 32-bit ARM DMA/IOMMU mapping code and Tegra SMMU driver changes to support IOMMU groups introduced a boot- time regression on Tegra124. This was caught very late because none of the standard configurations that are tested on Tegra enable the ARM DMA/ IOMMU mapping code since it is not needed. The reason for

...e of IOMMU mapping for compressible buffers - squash multiple patches into this drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c b/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c index 78597da6313a..d0538af1b967 100644 --- a/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c +++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c @@ -105,6 +105,11 @@ nvkm_device_tegra_probe_iommu(struct nvkm_device_tegra *tdev) unsigned long pgsize_bitmap; int ret; +#if IS_ENABLED(CONFIG_ARM) + /* make...

...mapping for compressible buffers - squash multiple patches into this drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c b/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c index 78597da6313a..0e372a190d3f 100644 --- a/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c +++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c @@ -23,6 +23,10 @@ #ifdef CONFIG_NOUVEAU_PLATFORM_DRIVER #include "priv.h" +#if IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU) +#include <asm/dma-iommu.h>...

From: Thierry Reding <treding at nvidia.com> An unfortunate interaction between the 32-bit ARM DMA/IOMMU mapping code and Tegra SMMU driver changes to support IOMMU groups introduced a boot- time regression on Tegra124. This was caught very late because none of the standard configurations that are tested on Tegra enable the ARM DMA/ IOMMU mapping code since it is not needed. The reason for

...patches into this > > > > drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c | 5 +++++ > > 1 file changed, 5 insertions(+) > > > > diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c b/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c > > index 78597da6313a..d0538af1b967 100644 > > --- a/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c > > +++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c > > @@ -105,6 +105,11 @@ nvkm_device_tegra_probe_iommu(struct nvkm_device_tegra *tdev) > > unsigned long pgsize_bitmap; > >...

From: Thierry Reding <treding at nvidia.com> The nouveau_fence_get_get_driver_name() function has a redundant _get in its name. Remove it. Signed-off-by: Thierry Reding <treding at nvidia.com> --- drivers/gpu/drm/nouveau/nouveau_fence.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_fence.c

...drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c | 5 +++++ > > > > 1 file changed, 5 insertions(+) > > > > > > > > diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c b/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c > > > > index 78597da6313a..d0538af1b967 100644 > > > > --- a/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c > > > > +++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c > > > > @@ -105,6 +105,11 @@ nvkm_device_tegra_probe_iommu(struct nvkm_device_tegra *tdev) > > > >...

Hello, There is a trouble on ARM with DMA allocations made by device drivers, the trouble is that DMA allocations are getting implicitly backed with IOMMU mapping by the driver core if IOMMU presents in a system and IOMMU could handle device. This is an undesired behaviour for drivers that manage IOMMU by themselves, like NVIDIA Tegra GPU driver. On arm32 the implicit backing happens if

...is series for easier reference and to show the need for the new API. .../drm/nouveau/nvkm/engine/device/tegra.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c b/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c index 78597da6313a..23428a7056e9 100644 --- a/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c +++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c @@ -19,6 +19,11 @@ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. */ + +#if IS_ENABLED(CONFIG_ARM_DMA_USE_I...

...is series for easier reference and to show the need for the new API. .../drm/nouveau/nvkm/engine/device/tegra.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c b/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c index 78597da6313a..23428a7056e9 100644 --- a/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c +++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c @@ -19,6 +19,11 @@ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. */ + +#if IS_ENABLED(CONFIG_ARM_DMA_USE_I...

With linux-next-2017-12-14, I get a crash when nouveau is loaded by systemd-udevd. [ 12.050625] Unable to handle kernel NULL pointer dereference at virtual address 00000058 [ 12.050627] Mem abort info: [ 12.050628] ESR = 0x96000004 [ 12.050630] Exception class = DABT (current EL), IL = 32 bits [ 12.050631] SET = 0, FnV = 0 [ 12.050632] EA = 0, S1PTW = 0 [ 12.050633] Data

...t; struct iommu_domain *domain; > + struct iommu_group *group; > unsigned long pgshift; > } iommu; > > diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c b/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c > index 78597da6313a..1f07999aea1d 100644 > --- a/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c > +++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c > @@ -110,7 +110,8 @@ nvkm_device_tegra_probe_iommu(struct nvkm_device_tegra *tdev) > > mutex_init(&tdev->iommu.mutex); > >...