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authorLinus Torvalds <torvalds@linux-foundation.org>2018-12-29 01:12:21 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2018-12-29 01:12:21 +0300
commitaf7ddd8a627c62a835524b3f5b471edbbbcce025 (patch)
treeaf9777ddef6d394c7cc01fca599328b584ca2bc1 /arch/parisc
parentfe2b0cdabcd9e6aeca66a104bc03576946e5fee2 (diff)
parent8b1cce9f5832a8eda17d37a3c49fb7dd2d650f46 (diff)
downloadlinux-af7ddd8a627c62a835524b3f5b471edbbbcce025.tar.xz
Merge tag 'dma-mapping-4.21' of git://git.infradead.org/users/hch/dma-mapping
Pull DMA mapping updates from Christoph Hellwig: "A huge update this time, but a lot of that is just consolidating or removing code: - provide a common DMA_MAPPING_ERROR definition and avoid indirect calls for dma_map_* error checking - use direct calls for the DMA direct mapping case, avoiding huge retpoline overhead for high performance workloads - merge the swiotlb dma_map_ops into dma-direct - provide a generic remapping DMA consistent allocator for architectures that have devices that perform DMA that is not cache coherent. Based on the existing arm64 implementation and also used for csky now. - improve the dma-debug infrastructure, including dynamic allocation of entries (Robin Murphy) - default to providing chaining scatterlist everywhere, with opt-outs for the few architectures (alpha, parisc, most arm32 variants) that can't cope with it - misc sparc32 dma-related cleanups - remove the dma_mark_clean arch hook used by swiotlb on ia64 and replace it with the generic noncoherent infrastructure - fix the return type of dma_set_max_seg_size (Niklas Söderlund) - move the dummy dma ops for not DMA capable devices from arm64 to common code (Robin Murphy) - ensure dma_alloc_coherent returns zeroed memory to avoid kernel data leaks through userspace. We already did this for most common architectures, but this ensures we do it everywhere. dma_zalloc_coherent has been deprecated and can hopefully be removed after -rc1 with a coccinelle script" * tag 'dma-mapping-4.21' of git://git.infradead.org/users/hch/dma-mapping: (73 commits) dma-mapping: fix inverted logic in dma_supported dma-mapping: deprecate dma_zalloc_coherent dma-mapping: zero memory returned from dma_alloc_* sparc/iommu: fix ->map_sg return value sparc/io-unit: fix ->map_sg return value arm64: default to the direct mapping in get_arch_dma_ops PCI: Remove unused attr variable in pci_dma_configure ia64: only select ARCH_HAS_DMA_COHERENT_TO_PFN if swiotlb is enabled dma-mapping: bypass indirect calls for dma-direct vmd: use the proper dma_* APIs instead of direct methods calls dma-direct: merge swiotlb_dma_ops into the dma_direct code dma-direct: use dma_direct_map_page to implement dma_direct_map_sg dma-direct: improve addressability error reporting swiotlb: remove dma_mark_clean swiotlb: remove SWIOTLB_MAP_ERROR ACPI / scan: Refactor _CCA enforcement dma-mapping: factor out dummy DMA ops dma-mapping: always build the direct mapping code dma-mapping: move dma_cache_sync out of line dma-mapping: move various slow path functions out of line ...
Diffstat (limited to 'arch/parisc')
-rw-r--r--arch/parisc/Kconfig2
-rw-r--r--arch/parisc/kernel/pci-dma.c4
-rw-r--r--arch/parisc/kernel/setup.c4
3 files changed, 3 insertions, 7 deletions
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index 92a339ee28b3..6e1b71da0e71 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -11,6 +11,7 @@ config PARISC
select ARCH_HAS_ELF_RANDOMIZE
select ARCH_HAS_STRICT_KERNEL_RWX
select ARCH_HAS_UBSAN_SANITIZE_ALL
+ select ARCH_NO_SG_CHAIN
select ARCH_SUPPORTS_MEMORY_FAILURE
select RTC_CLASS
select RTC_DRV_GENERIC
@@ -184,7 +185,6 @@ config PA11
depends on PA7000 || PA7100LC || PA7200 || PA7300LC
select ARCH_HAS_SYNC_DMA_FOR_CPU
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
- select DMA_DIRECT_OPS
select DMA_NONCOHERENT_CACHE_SYNC
config PREFETCH
diff --git a/arch/parisc/kernel/pci-dma.c b/arch/parisc/kernel/pci-dma.c
index 04c48f1ef3fb..239162355b58 100644
--- a/arch/parisc/kernel/pci-dma.c
+++ b/arch/parisc/kernel/pci-dma.c
@@ -404,7 +404,7 @@ static void *pcxl_dma_alloc(struct device *dev, size_t size,
order = get_order(size);
size = 1 << (order + PAGE_SHIFT);
vaddr = pcxl_alloc_range(size);
- paddr = __get_free_pages(flag, order);
+ paddr = __get_free_pages(flag | __GFP_ZERO, order);
flush_kernel_dcache_range(paddr, size);
paddr = __pa(paddr);
map_uncached_pages(vaddr, size, paddr);
@@ -429,7 +429,7 @@ static void *pcx_dma_alloc(struct device *dev, size_t size,
if ((attrs & DMA_ATTR_NON_CONSISTENT) == 0)
return NULL;
- addr = (void *)__get_free_pages(flag, get_order(size));
+ addr = (void *)__get_free_pages(flag | __GFP_ZERO, get_order(size));
if (addr)
*dma_handle = (dma_addr_t)virt_to_phys(addr);
diff --git a/arch/parisc/kernel/setup.c b/arch/parisc/kernel/setup.c
index 2b108ee3b217..f2cf86ac279b 100644
--- a/arch/parisc/kernel/setup.c
+++ b/arch/parisc/kernel/setup.c
@@ -99,10 +99,6 @@ void __init dma_ops_init(void)
case pcxl2:
pa7300lc_init();
- case pcxl: /* falls through */
- case pcxs:
- case pcxt:
- hppa_dma_ops = &dma_direct_ops;
break;
default:
break;