| Message ID | 0d25511c58981ecd0a1f3006dc1c30a73fb7d377.1628094601.git.robin.murphy@arm.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | iommu: Refactor DMA domain strictness | expand |
Am Mittwoch, 4. August 2021, 19:15:36 CEST schrieb Robin Murphy: > The core code bakes its own cookies now. > > CC: Heiko Stuebner <heiko@sntech.de> > Signed-off-by: Robin Murphy <robin.murphy@arm.com> On a Rockchip rk3288 (arm32), rk3399 (arm64) and px30 (arm64) with the graphics pipeline using the iommu Tested-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Heiko Stuebner <heiko@sntech.de> Works now nicely on both arm32 and arm64 Thanks Heiko > > --- > > v3: Also remove unneeded include > --- > drivers/iommu/rockchip-iommu.c | 12 +----------- > 1 file changed, 1 insertion(+), 11 deletions(-) > > diff --git a/drivers/iommu/rockchip-iommu.c b/drivers/iommu/rockchip-iommu.c > index 9febfb7f3025..5cb260820eda 100644 > --- a/drivers/iommu/rockchip-iommu.c > +++ b/drivers/iommu/rockchip-iommu.c > @@ -10,7 +10,6 @@ > #include <linux/compiler.h> > #include <linux/delay.h> > #include <linux/device.h> > -#include <linux/dma-iommu.h> > #include <linux/dma-mapping.h> > #include <linux/errno.h> > #include <linux/interrupt.h> > @@ -1074,10 +1073,6 @@ static struct iommu_domain *rk_iommu_domain_alloc(unsigned type) > if (!rk_domain) > return NULL; > > - if (type == IOMMU_DOMAIN_DMA && > - iommu_get_dma_cookie(&rk_domain->domain)) > - goto err_free_domain; > - > /* > * rk32xx iommus use a 2 level pagetable. > * Each level1 (dt) and level2 (pt) table has 1024 4-byte entries. > @@ -1085,7 +1080,7 @@ static struct iommu_domain *rk_iommu_domain_alloc(unsigned type) > */ > rk_domain->dt = (u32 *)get_zeroed_page(GFP_KERNEL | GFP_DMA32); > if (!rk_domain->dt) > - goto err_put_cookie; > + goto err_free_domain; > > rk_domain->dt_dma = dma_map_single(dma_dev, rk_domain->dt, > SPAGE_SIZE, DMA_TO_DEVICE); > @@ -1106,9 +1101,6 @@ static struct iommu_domain *rk_iommu_domain_alloc(unsigned type) > > err_free_dt: > free_page((unsigned long)rk_domain->dt); > -err_put_cookie: > - if (type == IOMMU_DOMAIN_DMA) > - iommu_put_dma_cookie(&rk_domain->domain); > err_free_domain: > kfree(rk_domain); > > @@ -1137,8 +1129,6 @@ static void rk_iommu_domain_free(struct iommu_domain *domain) > SPAGE_SIZE, DMA_TO_DEVICE); > free_page((unsigned long)rk_domain->dt); > > - if (domain->type == IOMMU_DOMAIN_DMA) > - iommu_put_dma_cookie(&rk_domain->domain); > kfree(rk_domain); > } > >
diff --git a/drivers/iommu/rockchip-iommu.c b/drivers/iommu/rockchip-iommu.c index 9febfb7f3025..5cb260820eda 100644 --- a/drivers/iommu/rockchip-iommu.c +++ b/drivers/iommu/rockchip-iommu.c @@ -10,7 +10,6 @@ #include <linux/compiler.h> #include <linux/delay.h> #include <linux/device.h> -#include <linux/dma-iommu.h> #include <linux/dma-mapping.h> #include <linux/errno.h> #include <linux/interrupt.h> @@ -1074,10 +1073,6 @@ static struct iommu_domain *rk_iommu_domain_alloc(unsigned type) if (!rk_domain) return NULL; - if (type == IOMMU_DOMAIN_DMA && - iommu_get_dma_cookie(&rk_domain->domain)) - goto err_free_domain; - /* * rk32xx iommus use a 2 level pagetable. * Each level1 (dt) and level2 (pt) table has 1024 4-byte entries. @@ -1085,7 +1080,7 @@ static struct iommu_domain *rk_iommu_domain_alloc(unsigned type) */ rk_domain->dt = (u32 *)get_zeroed_page(GFP_KERNEL | GFP_DMA32); if (!rk_domain->dt) - goto err_put_cookie; + goto err_free_domain; rk_domain->dt_dma = dma_map_single(dma_dev, rk_domain->dt, SPAGE_SIZE, DMA_TO_DEVICE); @@ -1106,9 +1101,6 @@ static struct iommu_domain *rk_iommu_domain_alloc(unsigned type) err_free_dt: free_page((unsigned long)rk_domain->dt); -err_put_cookie: - if (type == IOMMU_DOMAIN_DMA) - iommu_put_dma_cookie(&rk_domain->domain); err_free_domain: kfree(rk_domain); @@ -1137,8 +1129,6 @@ static void rk_iommu_domain_free(struct iommu_domain *domain) SPAGE_SIZE, DMA_TO_DEVICE); free_page((unsigned long)rk_domain->dt); - if (domain->type == IOMMU_DOMAIN_DMA) - iommu_put_dma_cookie(&rk_domain->domain); kfree(rk_domain); }
The core code bakes its own cookies now. CC: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Robin Murphy <robin.murphy@arm.com> --- v3: Also remove unneeded include --- drivers/iommu/rockchip-iommu.c | 12 +----------- 1 file changed, 1 insertion(+), 11 deletions(-)