search for: has_dma

...-git a/arch/s390/Kconfig b/arch/s390/Kconfig > index 1d57000..04f0e02 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 >...

...-git a/arch/s390/Kconfig b/arch/s390/Kconfig > index 1d57000..04f0e02 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 >...

.../Kconfig b/drivers/vdpa/Kconfig index 08b615f2da39..d0cb0e583a5d 100644 --- a/drivers/vdpa/Kconfig +++ b/drivers/vdpa/Kconfig @@ -14,7 +14,7 @@ if VDPA_MENU config VDPA_SIM tristate "vDPA device simulator" - depends on RUNTIME_TESTING_MENU + depends on RUNTIME_TESTING_MENU && HAS_DMA select VDPA select VHOST_RING select VHOST_IOTLB -- MST

.../Kconfig b/drivers/vdpa/Kconfig index 08b615f2da39..d0cb0e583a5d 100644 --- a/drivers/vdpa/Kconfig +++ b/drivers/vdpa/Kconfig @@ -14,7 +14,7 @@ if VDPA_MENU config VDPA_SIM tristate "vDPA device simulator" - depends on RUNTIME_TESTING_MENU + depends on RUNTIME_TESTING_MENU && HAS_DMA select VDPA select VHOST_RING select VHOST_IOTLB -- MST

On Mon, Apr 06, 2020 at 06:09:27AM -0700, Christoph Hellwig wrote: > Pleae just drop the code - we should not add new drivers with custom > DMA ops. I'm not sure there's another way to do this: this not a driver, it's a software emulator that pretends to be an actual device. We can't have the platform supply DMA ops here since the platform is a regular x86 or whatever. --

On Mon, Apr 06, 2020 at 06:09:27AM -0700, Christoph Hellwig wrote: > Pleae just drop the code - we should not add new drivers with custom > DMA ops. I'm not sure there's another way to do this: this not a driver, it's a software emulator that pretends to be an actual device. We can't have the platform supply DMA ops here since the platform is a regular x86 or whatever. --

.../Kconfig b/drivers/vdpa/Kconfig index 08b615f2da39..d0cb0e583a5d 100644 --- a/drivers/vdpa/Kconfig +++ b/drivers/vdpa/Kconfig @@ -14,7 +14,7 @@ if VDPA_MENU config VDPA_SIM tristate "vDPA device simulator" - depends on RUNTIME_TESTING_MENU + depends on RUNTIME_TESTING_MENU && HAS_DMA select VDPA select VHOST_RING select VHOST_IOTLB -- MST

...I'm not sure there's another way to do this: this not a driver, it's a > software emulator that pretends to be an actual device. We can't > have the platform supply DMA ops here since the platform is a regular > x86 or whatever. Yes, actually vdpa-sim does not depends on HAS_DMA. Maybe we can do shortcut like dev->dma_ops = vdpasim_dma_ops; Thanks >

Pleae just drop the code - we should not add new drivers with custom DMA ops.

...s390/Kconfig >> index 1d57000..04f0e02 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 >>...

...--git a/drivers/net/caif/Kconfig b/drivers/net/caif/Kconfig index 9db0570c5beb..661c25eb1c46 100644 --- a/drivers/net/caif/Kconfig +++ b/drivers/net/caif/Kconfig @@ -50,7 +50,7 @@ config CAIF_HSI config CAIF_VIRTIO tristate "CAIF virtio transport driver" - depends on CAIF && HAS_DMA + depends on CAIF && HAS_DMA && VHOST_DPN select VHOST_RING select VIRTIO select GENERIC_ALLOCATOR diff --git a/drivers/vdpa/Kconfig b/drivers/vdpa/Kconfig index 3e1ceb8e9f2b..e8140065c8a5 100644 --- a/drivers/vdpa/Kconfig +++ b/drivers/vdpa/Kconfig @@ -10,7 +10,7 @@ if VDPA...

....661c25eb1c46 100644 > > --- a/drivers/net/caif/Kconfig > > +++ b/drivers/net/caif/Kconfig > > @@ -50,7 +50,7 @@ config CAIF_HSI > > > > config CAIF_VIRTIO > > tristate "CAIF virtio transport driver" > > - depends on CAIF && HAS_DMA > > + depends on CAIF && HAS_DMA && VHOST_DPN > > select VHOST_RING > > select VIRTIO > > select GENERIC_ALLOCATOR > > diff --git a/drivers/vdpa/Kconfig b/drivers/vdpa/Kconfig > > index d0cb0e583a5d..aee28def466b 1006...

...--git a/drivers/net/caif/Kconfig b/drivers/net/caif/Kconfig index 9db0570c5beb..661c25eb1c46 100644 --- a/drivers/net/caif/Kconfig +++ b/drivers/net/caif/Kconfig @@ -50,7 +50,7 @@ config CAIF_HSI config CAIF_VIRTIO tristate "CAIF virtio transport driver" - depends on CAIF && HAS_DMA + depends on CAIF && HAS_DMA && VHOST_DPN select VHOST_RING select VIRTIO select GENERIC_ALLOCATOR diff --git a/drivers/vdpa/Kconfig b/drivers/vdpa/Kconfig index 3e1ceb8e9f2b..e8140065c8a5 100644 --- a/drivers/vdpa/Kconfig +++ b/drivers/vdpa/Kconfig @@ -10,7 +10,7 @@ if VDPA...

...--git a/drivers/net/caif/Kconfig b/drivers/net/caif/Kconfig index 9db0570c5beb..661c25eb1c46 100644 --- a/drivers/net/caif/Kconfig +++ b/drivers/net/caif/Kconfig @@ -50,7 +50,7 @@ config CAIF_HSI config CAIF_VIRTIO tristate "CAIF virtio transport driver" - depends on CAIF && HAS_DMA + depends on CAIF && HAS_DMA && VHOST_DPN select VHOST_RING select VIRTIO select GENERIC_ALLOCATOR diff --git a/drivers/vdpa/Kconfig b/drivers/vdpa/Kconfig index d0cb0e583a5d..aee28def466b 100644 --- a/drivers/vdpa/Kconfig +++ b/drivers/vdpa/Kconfig @@ -14,7 +14,7 @@ if VDPA_M...

...--git a/drivers/net/caif/Kconfig b/drivers/net/caif/Kconfig index 9db0570c5beb..661c25eb1c46 100644 --- a/drivers/net/caif/Kconfig +++ b/drivers/net/caif/Kconfig @@ -50,7 +50,7 @@ config CAIF_HSI config CAIF_VIRTIO tristate "CAIF virtio transport driver" - depends on CAIF && HAS_DMA + depends on CAIF && HAS_DMA && VHOST_DPN select VHOST_RING select VIRTIO select GENERIC_ALLOCATOR diff --git a/drivers/vdpa/Kconfig b/drivers/vdpa/Kconfig index d0cb0e583a5d..aee28def466b 100644 --- a/drivers/vdpa/Kconfig +++ b/drivers/vdpa/Kconfig @@ -14,7 +14,7 @@ if VDPA_M...

...--git a/drivers/net/caif/Kconfig b/drivers/net/caif/Kconfig index 9db0570c5beb..661c25eb1c46 100644 --- a/drivers/net/caif/Kconfig +++ b/drivers/net/caif/Kconfig @@ -50,7 +50,7 @@ config CAIF_HSI config CAIF_VIRTIO tristate "CAIF virtio transport driver" - depends on CAIF && HAS_DMA + depends on CAIF && HAS_DMA && VHOST_DPN select VHOST_RING select VIRTIO select GENERIC_ALLOCATOR diff --git a/drivers/vdpa/Kconfig b/drivers/vdpa/Kconfig index 71d9a64f2c7d..ee35f8261a88 100644 --- a/drivers/vdpa/Kconfig +++ b/drivers/vdpa/Kconfig @@ -10,7 +10,7 @@ if VDPA...

...--git a/drivers/net/caif/Kconfig b/drivers/net/caif/Kconfig index 9db0570c5beb..661c25eb1c46 100644 --- a/drivers/net/caif/Kconfig +++ b/drivers/net/caif/Kconfig @@ -50,7 +50,7 @@ config CAIF_HSI config CAIF_VIRTIO tristate "CAIF virtio transport driver" - depends on CAIF && HAS_DMA + depends on CAIF && HAS_DMA && VHOST_DPN select VHOST_RING select VIRTIO select GENERIC_ALLOCATOR diff --git a/drivers/vdpa/Kconfig b/drivers/vdpa/Kconfig index 71d9a64f2c7d..ee35f8261a88 100644 --- a/drivers/vdpa/Kconfig +++ b/drivers/vdpa/Kconfig @@ -10,7 +10,7 @@ if VDPA...

...e easiest solution to keep virtio-ccw as similar as possible to virtio-pci.Together with a fixed up patch set from Andy Lutomirski this seems to work. We will also need a fixup for powerc and QEMU changes to make virtio work with iommu on power and x86. ---- v2->v3: - make dma-noop depend on HAS_DMA - do not do memset on alloc - prefix patches with *dma* v1->v2: - initial testing - always use dma_noop_ops if device has no private dma_ops - get rid of setup in virtio_ccw,kvm_virtio - set CONFIG_HAS_DMA(ATTRS) for virtio (fixes compile for !PCI) - rename s390_dma_ops to s390_pci_dma_ops Chr...

...e easiest solution to keep virtio-ccw as similar as possible to virtio-pci.Together with a fixed up patch set from Andy Lutomirski this seems to work. We will also need a fixup for powerc and QEMU changes to make virtio work with iommu on power and x86. ---- v2->v3: - make dma-noop depend on HAS_DMA - do not do memset on alloc - prefix patches with *dma* v1->v2: - initial testing - always use dma_noop_ops if device has no private dma_ops - get rid of setup in virtio_ccw,kvm_virtio - set CONFIG_HAS_DMA(ATTRS) for virtio (fixes compile for !PCI) - rename s390_dma_ops to s390_pci_dma_ops Chr...

...100644 > --- a/drivers/virtio/Kconfig > +++ b/drivers/virtio/Kconfig > @@ -60,7 +60,7 @@ config VIRTIO_INPUT > > config VIRTIO_MMIO > tristate "Platform bus driver for memory mapped virtio devices" > - depends on HAS_IOMEM > + depends on HAS_IOMEM && HAS_DMA > select VIRTIO > ---help--- > This drivers provides support for memory mapped virtio What's this chunk doing here btw? Should be part of the mmio patch? > diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c > index ab0be6c084f6..9abc008ff7ea 1006...