diff options
| author | Ben Dooks <ben.dooks@codethink.co.uk> | 2016-06-08 19:31:10 +0100 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2016-06-21 11:59:03 +0200 |
| commit | 6ae5343c26f9cba5e9ef8ba6f23b5bb255ebc798 (patch) | |
| tree | 800bcdf19e1ee43cd5dcb2eef6000f6c5e696bf4 /drivers/iommu/exynos-iommu.c | |
| parent | 96f6655700d16d1bae8ef49db6ce28607ebee6f3 (diff) | |
| download | talos-obmc-linux-6ae5343c26f9cba5e9ef8ba6f23b5bb255ebc798.tar.gz talos-obmc-linux-6ae5343c26f9cba5e9ef8ba6f23b5bb255ebc798.zip | |
iommu/exynos: update to use iommu big-endian
Add initial support for big endian by always writing the pte
in le32. Note, revisit if hardware capable of doing big endian
fetches.
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/exynos-iommu.c')
| -rw-r--r-- | drivers/iommu/exynos-iommu.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c index 633e6d023c0d..33dcc29ec200 100644 --- a/drivers/iommu/exynos-iommu.c +++ b/drivers/iommu/exynos-iommu.c @@ -54,6 +54,10 @@ typedef u32 sysmmu_pte_t; #define lv2ent_small(pent) ((*(pent) & 2) == 2) #define lv2ent_large(pent) ((*(pent) & 3) == 1) +#ifdef CONFIG_BIG_ENDIAN +#warning "revisit driver if we can enable big-endian ptes" +#endif + /* * v1.x - v3.x SYSMMU supports 32bit physical and 32bit virtual address spaces * v5.0 introduced support for 36bit physical address space by shifting @@ -710,7 +714,7 @@ static inline void update_pte(sysmmu_pte_t *ent, sysmmu_pte_t val) { dma_sync_single_for_cpu(dma_dev, virt_to_phys(ent), sizeof(*ent), DMA_TO_DEVICE); - *ent = val; + *ent = cpu_to_le32(val); dma_sync_single_for_device(dma_dev, virt_to_phys(ent), sizeof(*ent), DMA_TO_DEVICE); } |
