diff options
| author | Shunqian Zheng <zhengsq@rock-chips.com> | 2016-06-24 04:13:30 +0200 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2016-06-27 14:50:08 +0200 |
| commit | a93db2f22b6b48369acb72f66a0ae47ec17a0b05 (patch) | |
| tree | 0b1194799a7e15afa0f044517ff441548f6fad9e /drivers/iommu | |
| parent | iommu/rockchip: Use DMA API to manage coherency (diff) | |
| download | linux-a93db2f22b6b48369acb72f66a0ae47ec17a0b05.tar.xz linux-a93db2f22b6b48369acb72f66a0ae47ec17a0b05.zip | |
iommu/rockchip: Prepare to support generic DMA mapping
Set geometry for allocated domains and fix .domain_alloc() callback to
work with IOMMU_DOMAIN_DMA domain type, which is used for implicit
domains on ARM64.
Signed-off-by: Shunqian Zheng <zhengsq@rock-chips.com>
Signed-off-by: Tomasz Figa <tfiga@chromium.org>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/rockchip-iommu.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/drivers/iommu/rockchip-iommu.c b/drivers/iommu/rockchip-iommu.c index 712ed7591783..9afcbf79f0b0 100644 --- a/drivers/iommu/rockchip-iommu.c +++ b/drivers/iommu/rockchip-iommu.c @@ -889,7 +889,7 @@ static struct iommu_domain *rk_iommu_domain_alloc(unsigned type) struct platform_device *pdev; struct device *iommu_dev; - if (type != IOMMU_DOMAIN_UNMANAGED) + if (type != IOMMU_DOMAIN_UNMANAGED && type != IOMMU_DOMAIN_DMA) return NULL; /* Register a pdev per domain, so DMA API can base on this *dev @@ -906,8 +906,8 @@ static struct iommu_domain *rk_iommu_domain_alloc(unsigned type) rk_domain->pdev = pdev; - /* To init the iovad which is required by iommu_dma_init_domain() */ - if (iommu_get_dma_cookie(&rk_domain->domain)) + if (type == IOMMU_DOMAIN_DMA && + iommu_get_dma_cookie(&rk_domain->domain)) goto err_unreg_pdev; /* @@ -933,12 +933,17 @@ static struct iommu_domain *rk_iommu_domain_alloc(unsigned type) spin_lock_init(&rk_domain->dt_lock); INIT_LIST_HEAD(&rk_domain->iommus); + rk_domain->domain.geometry.aperture_start = 0; + rk_domain->domain.geometry.aperture_end = DMA_BIT_MASK(32); + rk_domain->domain.geometry.force_aperture = true; + return &rk_domain->domain; err_free_dt: free_page((unsigned long)rk_domain->dt); err_put_cookie: - iommu_put_dma_cookie(&rk_domain->domain); + if (type == IOMMU_DOMAIN_DMA) + iommu_put_dma_cookie(&rk_domain->domain); err_unreg_pdev: platform_device_unregister(pdev); @@ -967,7 +972,8 @@ static void rk_iommu_domain_free(struct iommu_domain *domain) SPAGE_SIZE, DMA_TO_DEVICE); free_page((unsigned long)rk_domain->dt); - iommu_put_dma_cookie(&rk_domain->domain); + if (domain->type == IOMMU_DOMAIN_DMA) + iommu_put_dma_cookie(&rk_domain->domain); platform_device_unregister(rk_domain->pdev); } |