diff options
| author | Yong Wu <yong.wu@mediatek.com> | 2021-01-11 14:19:02 +0300 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2021-02-01 14:31:18 +0300 |
| commit | bfed873114c5fbb8982113abbab17cde7788dcba (patch) | |
| tree | 72522429d270c1f2f7a4395919dc353458a5ba69 /drivers/iommu | |
| parent | c0b57581b73be7b43f39e0dff201c93413f6a668 (diff) | |
| download | linux-bfed873114c5fbb8982113abbab17cde7788dcba.tar.xz | |
iommu/mediatek: Support up to 34bit iova in tlb flush
If the iova is 34bit, the iova[32][33] is the bit0/1 in the tlb flush
register. Add a new macro for this.
In the macro, since (iova + size - 1) may be end with 0xfff, then the
bit0/1 always is 1, thus add a mask.
Signed-off-by: Yong Wu <yong.wu@mediatek.com>
Reviewed-by: Tomasz Figa <tfiga@chromium.org>
Link: https://lore.kernel.org/r/20210111111914.22211-22-yong.wu@mediatek.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/mtk_iommu.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index b9c63c8de33e..468be7ca62e4 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -129,6 +129,11 @@ static const struct iommu_ops mtk_iommu_ops; static int mtk_iommu_hw_init(const struct mtk_iommu_data *data); +#define MTK_IOMMU_TLB_ADDR(iova) ({ \ + dma_addr_t _addr = iova; \ + ((lower_32_bits(_addr) & GENMASK(31, 12)) | upper_32_bits(_addr));\ +}) + /* * In M4U 4GB mode, the physical address is remapped as below: * @@ -213,8 +218,9 @@ static void mtk_iommu_tlb_flush_range_sync(unsigned long iova, size_t size, writel_relaxed(F_INVLD_EN1 | F_INVLD_EN0, data->base + data->plat_data->inv_sel_reg); - writel_relaxed(iova, data->base + REG_MMU_INVLD_START_A); - writel_relaxed(iova + size - 1, + writel_relaxed(MTK_IOMMU_TLB_ADDR(iova), + data->base + REG_MMU_INVLD_START_A); + writel_relaxed(MTK_IOMMU_TLB_ADDR(iova + size - 1), data->base + REG_MMU_INVLD_END_A); writel_relaxed(F_MMU_INV_RANGE, data->base + REG_MMU_INVALIDATE); |