summaryrefslogtreecommitdiff
path: root/arch/s390
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2018-06-04 10:58:12 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-06-04 10:58:12 -0700
commite5a594643a3444d39c1467040e638bf08a4e0db8 (patch)
treee65c94ef60a51559db467055232ce1021ec263e1 /arch/s390
parentf956d08a56732c61a4d44e8034eeeedfc06fe721 (diff)
parent2550bbfd495227945e17ed1fa1c05bce4753b86b (diff)
Merge tag 'dma-mapping-4.18' of git://git.infradead.org/users/hch/dma-mapping
Pull dma-mapping updates from Christoph Hellwig: - replace the force_dma flag with a dma_configure bus method. (Nipun Gupta, although one patch is Ñ–ncorrectly attributed to me due to a git rebase bug) - use GFP_DMA32 more agressively in dma-direct. (Takashi Iwai) - remove PCI_DMA_BUS_IS_PHYS and rely on the dma-mapping API to do the right thing for bounce buffering. - move dma-debug initialization to common code, and apply a few cleanups to the dma-debug code. - cleanup the Kconfig mess around swiotlb selection - swiotlb comment fixup (Yisheng Xie) - a trivial swiotlb fix. (Dan Carpenter) - support swiotlb on RISC-V. (based on a patch from Palmer Dabbelt) - add a new generic dma-noncoherent dma_map_ops implementation and use it for arc, c6x and nds32. - improve scatterlist validity checking in dma-debug. (Robin Murphy) - add a struct device quirk to limit the dma-mask to 32-bit due to bridge/system issues, and switch x86 to use it instead of a local hack for VIA bridges. - handle devices without a dma_mask more gracefully in the dma-direct code. * tag 'dma-mapping-4.18' of git://git.infradead.org/users/hch/dma-mapping: (48 commits) dma-direct: don't crash on device without dma_mask nds32: use generic dma_noncoherent_ops nds32: implement the unmap_sg DMA operation nds32: consolidate DMA cache maintainance routines x86/pci-dma: switch the VIA 32-bit DMA quirk to use the struct device flag x86/pci-dma: remove the explicit nodac and allowdac option x86/pci-dma: remove the experimental forcesac boot option Documentation/x86: remove a stray reference to pci-nommu.c core, dma-direct: add a flag 32-bit dma limits dma-mapping: remove unused gfp_t parameter to arch_dma_alloc_attrs dma-debug: check scatterlist segments c6x: use generic dma_noncoherent_ops arc: use generic dma_noncoherent_ops arc: fix arc_dma_{map,unmap}_page arc: fix arc_dma_sync_sg_for_{cpu,device} arc: simplify arc_dma_sync_single_for_{cpu,device} dma-mapping: provide a generic dma-noncoherent implementation dma-mapping: simplify Kconfig dependencies riscv: add swiotlb support riscv: only enable ZONE_DMA32 for 64-bit ...
Diffstat (limited to 'arch/s390')
-rw-r--r--arch/s390/Kconfig17
-rw-r--r--arch/s390/include/asm/pci.h2
-rw-r--r--arch/s390/pci/pci_dma.c11
3 files changed, 4 insertions, 26 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 199ac3e4da1d..6a64287ec1da 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -35,9 +35,6 @@ config GENERIC_BUG
config GENERIC_BUG_RELATIVE_POINTERS
def_bool y
-config ARCH_DMA_ADDR_T_64BIT
- def_bool y
-
config GENERIC_LOCKBREAK
def_bool y if SMP && PREEMPT
@@ -133,7 +130,6 @@ config S390
select HAVE_CMPXCHG_LOCAL
select HAVE_COPY_THREAD_TLS
select HAVE_DEBUG_KMEMLEAK
- select HAVE_DMA_API_DEBUG
select HAVE_DMA_CONTIGUOUS
select DMA_DIRECT_OPS
select HAVE_DYNAMIC_FTRACE
@@ -709,7 +705,11 @@ config QDIO
menuconfig PCI
bool "PCI support"
select PCI_MSI
+ select IOMMU_HELPER
select IOMMU_SUPPORT
+ select NEED_DMA_MAP_STATE
+ select NEED_SG_DMA_LENGTH
+
help
Enable PCI support.
@@ -733,15 +733,6 @@ config PCI_DOMAINS
config HAS_IOMEM
def_bool PCI
-config IOMMU_HELPER
- def_bool PCI
-
-config NEED_SG_DMA_LENGTH
- def_bool PCI
-
-config NEED_DMA_MAP_STATE
- def_bool PCI
-
config CHSC_SCH
def_tristate m
prompt "Support for CHSC subchannels"
diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h
index 12fe3591034f..94f8db468c9b 100644
--- a/arch/s390/include/asm/pci.h
+++ b/arch/s390/include/asm/pci.h
@@ -2,8 +2,6 @@
#ifndef __ASM_S390_PCI_H
#define __ASM_S390_PCI_H
-/* must be set before including asm-generic/pci.h */
-#define PCI_DMA_BUS_IS_PHYS (0)
/* must be set before including pci_clp.h */
#define PCI_BAR_COUNT 6
diff --git a/arch/s390/pci/pci_dma.c b/arch/s390/pci/pci_dma.c
index 2d15d84c20ed..d387a0fbdd7e 100644
--- a/arch/s390/pci/pci_dma.c
+++ b/arch/s390/pci/pci_dma.c
@@ -668,15 +668,6 @@ void zpci_dma_exit(void)
kmem_cache_destroy(dma_region_table_cache);
}
-#define PREALLOC_DMA_DEBUG_ENTRIES (1 << 16)
-
-static int __init dma_debug_do_init(void)
-{
- dma_debug_init(PREALLOC_DMA_DEBUG_ENTRIES);
- return 0;
-}
-fs_initcall(dma_debug_do_init);
-
const struct dma_map_ops s390_pci_dma_ops = {
.alloc = s390_dma_alloc,
.free = s390_dma_free,
@@ -685,8 +676,6 @@ const struct dma_map_ops s390_pci_dma_ops = {
.map_page = s390_dma_map_pages,
.unmap_page = s390_dma_unmap_pages,
.mapping_error = s390_mapping_error,
- /* if we support direct DMA this must be conditional */
- .is_phys = 0,
/* dma_supported is unconditionally true without a callback */
};
EXPORT_SYMBOL_GPL(s390_pci_dma_ops);