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| author |   Tomasz Figa <tfiga@chromium.org> | 2018-03-23 15:38:06 +0800 |
|---|---|---|
| committer |   Joerg Roedel <jroedel@suse.de> | 2018-03-29 12:22:26 +0200 |
| commit | bf2a5e717a47d042ca5f9f438cf186633f23033b (patch) | |
| tree | 34e615a73cabfa2c6627de7b35088d473690cb77 /drivers/iommu/rockchip-iommu.c | |
| parent | iommu/rockchip: Use iopoll helpers to wait for hardware (diff) | |
| download | linux-dev-bf2a5e717a47d042ca5f9f438cf186633f23033b.tar.xz linux-dev-bf2a5e717a47d042ca5f9f438cf186633f23033b.zip | |
iommu/rockchip: Fix TLB flush of secondary IOMMUs
Due to the bug in current code, only first IOMMU has the TLB lines
flushed in rk_iommu_zap_lines. This patch fixes the inner loop to
execute for all IOMMUs and properly flush the TLB.
Signed-off-by: Tomasz Figa <tfiga@chromium.org>
Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/rockchip-iommu.c')
| -rw-r--r-- | drivers/iommu/rockchip-iommu.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/iommu/rockchip-iommu.c b/drivers/iommu/rockchip-iommu.c index 7130d92ff79c..c3df53e480ea 100644 --- a/drivers/iommu/rockchip-iommu.c +++ b/drivers/iommu/rockchip-iommu.c @@ -274,19 +274,21 @@ static void rk_iommu_base_command(void __iomem *base, u32 command) { writel(command, base + RK_MMU_COMMAND); } -static void rk_iommu_zap_lines(struct rk_iommu *iommu, dma_addr_t iova, +static void rk_iommu_zap_lines(struct rk_iommu *iommu, dma_addr_t iova_start, size_t size) { int i; - - dma_addr_t iova_end = iova + size; + dma_addr_t iova_end = iova_start + size; /* * TODO(djkurtz): Figure out when it is more efficient to shootdown the * entire iotlb rather than iterate over individual iovas. */ - for (i = 0; i < iommu->num_mmu; i++) - for (; iova < iova_end; iova += SPAGE_SIZE) + for (i = 0; i < iommu->num_mmu; i++) { + dma_addr_t iova; + + for (iova = iova_start; iova < iova_end; iova += SPAGE_SIZE) rk_iommu_write(iommu->bases[i], RK_MMU_ZAP_ONE_LINE, iova); + } } static bool rk_iommu_is_stall_active(struct rk_iommu *iommu) |