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| author | Claire Chang <tientzu@chromium.org> | 2021-06-24 23:55:20 +0800 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad@kernel.org> | 2021-07-13 20:04:43 -0400 |
| commit | 903cd0f315fe426c6a64c54ed389de0becb663dc (patch) | |
| tree | 5fc7baecb38bf0154a1438d00469658ac0164041 /kernel/dma/swiotlb.c | |
| parent | 6f2beb268a5d35504a636c4a3b7aaa76ec32d96c (diff) | |
| download | linux-903cd0f315fe426c6a64c54ed389de0becb663dc.tar.gz linux-903cd0f315fe426c6a64c54ed389de0becb663dc.tar.bz2 linux-903cd0f315fe426c6a64c54ed389de0becb663dc.zip | |
swiotlb: Use is_swiotlb_force_bounce for swiotlb data bouncing
Propagate the swiotlb_force into io_tlb_default_mem->force_bounce and
use it to determine whether to bounce the data or not. This will be
useful later to allow for different pools.
Signed-off-by: Claire Chang <tientzu@chromium.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Stefano Stabellini <sstabellini@kernel.org>
Tested-by: Will Deacon <will@kernel.org>
Acked-by: Stefano Stabellini <sstabellini@kernel.org>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
[v2: Includes Will's fix]
Diffstat (limited to 'kernel/dma/swiotlb.c')
| -rw-r--r-- | kernel/dma/swiotlb.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c index d8677d6637dd..04319dd22d28 100644 --- a/kernel/dma/swiotlb.c +++ b/kernel/dma/swiotlb.c @@ -179,6 +179,10 @@ static void swiotlb_init_io_tlb_mem(struct io_tlb_mem *mem, phys_addr_t start, mem->end = mem->start + bytes; mem->index = 0; mem->late_alloc = late_alloc; + + if (swiotlb_force == SWIOTLB_FORCE) + mem->force_bounce = true; + spin_lock_init(&mem->lock); for (i = 0; i < mem->nslabs; i++) { mem->slots[i].list = IO_TLB_SEGSIZE - io_tlb_offset(i); |