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| author | Christian Borntraeger <borntraeger@de.ibm.com> | 2015-10-27 15:13:42 +0900 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2015-11-03 12:10:55 +0100 |
| commit | 8dde059e9e77f6d23b2812ac51f3cd0eacab47d6 (patch) | |
| tree | 095242d6e1c845e854d65b5f62bd32fa3eecd094 | |
| parent | 1a062e174059533eafbbad869b8e4986702c6961 (diff) | |
| download | linux-master.tar.gz | |
As virtio-ccw now has dma ops, we can no longer default to the PCI ones.
Make use of dev_archdata to keep the dma_ops per device. The pci devices
now use that to override the default, and the default is changed to use
the noop ops for everything that is not PCI. To compile without PCI
support we also have to enable the DMA api with virtio.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Joerg Roedel <jroedel@suse.de>
Acked-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
| -rw-r--r-- | arch/s390/Kconfig | 3 | ||||
| -rw-r--r-- | arch/s390/include/asm/device.h | 6 | ||||
| -rw-r--r-- | arch/s390/include/asm/dma-mapping.h | 6 | ||||
| -rw-r--r-- | arch/s390/pci/pci.c | 1 | ||||
| -rw-r--r-- | arch/s390/pci/pci_dma.c | 4 |
5 files changed, 14 insertions, 6 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index 1d57000b1b24ad..04f0e02004ba7a 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -113,6 +113,7 @@ config S390 select GENERIC_FIND_FIRST_BIT select GENERIC_SMP_IDLE_THREAD select GENERIC_TIME_VSYSCALL + select HAS_DMA select HAVE_ALIGNED_STRUCT_PAGE if SLUB select HAVE_ARCH_AUDITSYSCALL select HAVE_ARCH_EARLY_PFN_TO_NID @@ -124,6 +125,7 @@ config S390 select HAVE_CMPXCHG_DOUBLE select HAVE_CMPXCHG_LOCAL select HAVE_DEBUG_KMEMLEAK + select HAVE_DMA_ATTRS select HAVE_DYNAMIC_FTRACE select HAVE_DYNAMIC_FTRACE_WITH_REGS select HAVE_FTRACE_MCOUNT_RECORD @@ -580,7 +582,6 @@ config QDIO menuconfig PCI bool "PCI support" - select HAVE_DMA_ATTRS select PCI_MSI help Enable PCI support. diff --git a/arch/s390/include/asm/device.h b/arch/s390/include/asm/device.h index d8f9872b0e2dc3..4a9f35e0973ff1 100644 --- a/arch/s390/include/asm/device.h +++ b/arch/s390/include/asm/device.h @@ -3,5 +3,9 @@ * * This file is released under the GPLv2 */ -#include <asm-generic/device.h> +struct dev_archdata { + struct dma_map_ops *dma_ops; +}; +struct pdev_archdata { +}; diff --git a/arch/s390/include/asm/dma-mapping.h b/arch/s390/include/asm/dma-mapping.h index b3fd54d93dd20f..cb05f5c57ce129 100644 --- a/arch/s390/include/asm/dma-mapping.h +++ b/arch/s390/include/asm/dma-mapping.h @@ -11,11 +11,13 @@ #define DMA_ERROR_CODE (~(dma_addr_t) 0x0) -extern struct dma_map_ops s390_dma_ops; +extern struct dma_map_ops s390_pci_dma_ops; static inline struct dma_map_ops *get_dma_ops(struct device *dev) { - return &s390_dma_ops; + if (dev && dev->archdata.dma_ops) + return dev->archdata.dma_ops; + return &dma_noop_ops; } static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size, diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c index 7ef12a3ace3aef..fa416052297cb9 100644 --- a/arch/s390/pci/pci.c +++ b/arch/s390/pci/pci.c @@ -649,6 +649,7 @@ int pcibios_add_device(struct pci_dev *pdev) zdev->pdev = pdev; pdev->dev.groups = zpci_attr_groups; + pdev->dev.archdata.dma_ops = &s390_pci_dma_ops; zpci_map_resources(pdev); for (i = 0; i < PCI_BAR_COUNT; i++) { diff --git a/arch/s390/pci/pci_dma.c b/arch/s390/pci/pci_dma.c index 37505b8b409378..ea39c3f14831d0 100644 --- a/arch/s390/pci/pci_dma.c +++ b/arch/s390/pci/pci_dma.c @@ -495,7 +495,7 @@ static int __init dma_debug_do_init(void) } fs_initcall(dma_debug_do_init); -struct dma_map_ops s390_dma_ops = { +struct dma_map_ops s390_pci_dma_ops = { .alloc = s390_dma_alloc, .free = s390_dma_free, .map_sg = s390_dma_map_sg, @@ -506,7 +506,7 @@ struct dma_map_ops s390_dma_ops = { .is_phys = 0, /* dma_supported is unconditionally true without a callback */ }; -EXPORT_SYMBOL_GPL(s390_dma_ops); +EXPORT_SYMBOL_GPL(s390_pci_dma_ops); static int __init s390_iommu_setup(char *str) { |