diff options
| author | Robin Murphy <robin.murphy@arm.com> | 2021-08-11 15:21:19 +0300 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2021-08-18 14:25:31 +0300 |
| commit | 4a376d4ac189ea097524eb53b3137c46a0dcc2d4 (patch) | |
| tree | 132c1fb7ca164ea772e05f3b77b4e6f87a53c388 /drivers/iommu | |
| parent | f297e27f831705de50811d933a394969602e8564 (diff) | |
| download | linux-4a376d4ac189ea097524eb53b3137c46a0dcc2d4.tar.xz | |
iommu/exynos: Drop IOVA cookie management
The core code bakes its own cookies now.
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/12d88cbf44e57faa4f0512760e7ed3a9cba05ca8.1628682048.git.robin.murphy@arm.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/exynos-iommu.c | 19 |
1 files changed, 4 insertions, 15 deletions
diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c index d0fbf1d10e18..939ffa768986 100644 --- a/drivers/iommu/exynos-iommu.c +++ b/drivers/iommu/exynos-iommu.c @@ -21,7 +21,6 @@ #include <linux/platform_device.h> #include <linux/pm_runtime.h> #include <linux/slab.h> -#include <linux/dma-iommu.h> typedef u32 sysmmu_iova_t; typedef u32 sysmmu_pte_t; @@ -735,20 +734,16 @@ static struct iommu_domain *exynos_iommu_domain_alloc(unsigned type) /* Check if correct PTE offsets are initialized */ BUG_ON(PG_ENT_SHIFT < 0 || !dma_dev); + if (type != IOMMU_DOMAIN_DMA && type != IOMMU_DOMAIN_UNMANAGED) + return NULL; + domain = kzalloc(sizeof(*domain), GFP_KERNEL); if (!domain) return NULL; - if (type == IOMMU_DOMAIN_DMA) { - if (iommu_get_dma_cookie(&domain->domain) != 0) - goto err_pgtable; - } else if (type != IOMMU_DOMAIN_UNMANAGED) { - goto err_pgtable; - } - domain->pgtable = (sysmmu_pte_t *)__get_free_pages(GFP_KERNEL, 2); if (!domain->pgtable) - goto err_dma_cookie; + goto err_pgtable; domain->lv2entcnt = (short *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, 1); if (!domain->lv2entcnt) @@ -779,9 +774,6 @@ err_lv2ent: free_pages((unsigned long)domain->lv2entcnt, 1); err_counter: free_pages((unsigned long)domain->pgtable, 2); -err_dma_cookie: - if (type == IOMMU_DOMAIN_DMA) - iommu_put_dma_cookie(&domain->domain); err_pgtable: kfree(domain); return NULL; @@ -809,9 +801,6 @@ static void exynos_iommu_domain_free(struct iommu_domain *iommu_domain) spin_unlock_irqrestore(&domain->lock, flags); - if (iommu_domain->type == IOMMU_DOMAIN_DMA) - iommu_put_dma_cookie(iommu_domain); - dma_unmap_single(dma_dev, virt_to_phys(domain->pgtable), LV1TABLE_SIZE, DMA_TO_DEVICE); |