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iommu/ipmmu-vmsa: Clean up DMA API usage

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With the correct DMA API calls now integrated into the io-pgtable code,
let that handle the flushing of non-coherent page table updates.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Robin Murphy 2015-07-29 19:46:08 +01:00 committed by Will Deacon
parent bdc6d97347
commit ff2ed96dde
1 changed files with 5 additions and 14 deletions
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19
drivers/iommu/ipmmu-vmsa.c
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@ -283,24 +283,10 @@ static void ipmmu_tlb_add_flush(unsigned long iova, size_t size, bool leaf,
/* The hardware doesn't support selective TLB flush. */
}
static void ipmmu_flush_pgtable(void *ptr, size_t size, void *cookie)
{
unsigned long offset = (unsigned long)ptr & ~PAGE_MASK;
struct ipmmu_vmsa_domain *domain = cookie;
/*
* TODO: Add support for coherent walk through CCI with DVM and remove
* cache handling.
*/
dma_map_page(domain->mmu->dev, virt_to_page(ptr), offset, size,
DMA_TO_DEVICE);
}
static struct iommu_gather_ops ipmmu_gather_ops = {
.tlb_flush_all = ipmmu_tlb_flush_all,
.tlb_add_flush = ipmmu_tlb_add_flush,
.tlb_sync = ipmmu_tlb_flush_all,
.flush_pgtable = ipmmu_flush_pgtable,
};
/* -----------------------------------------------------------------------------
@ -327,6 +313,11 @@ static int ipmmu_domain_init_context(struct ipmmu_vmsa_domain *domain)
domain->cfg.ias = 32;
domain->cfg.oas = 40;
domain->cfg.tlb = &ipmmu_gather_ops;
/*
* TODO: Add support for coherent walk through CCI with DVM and remove
* cache handling. For now, delegate it to the io-pgtable code.
*/
domain->cfg.iommu_dev = domain->mmu->dev;
domain->iop = alloc_io_pgtable_ops(ARM_32_LPAE_S1, &domain->cfg,
domain);