search for: get_arch_dma_op

Displaying 9 results from an estimated 9 matches for "get_arch_dma_op".

Did you mean: get_arch_dma_ops
2020 Feb 04
2
[PATCH 5/5] vdpasim: vDPA device simulator
...MHO, it would be nice if dma_ops of the parent device could be > re-used. vdpa_device is expecting to represent a physical device > except this simulator, however, there are not enough information in > vdpa_device.dev to indicating which kind physical device it attached > to. Namely get_arch_dma_ops(struct bus type) can not work on > vdpa_device.dev. Then it seems device drivers need to implement a wrap > of dma_ops of parent devices. Can this work be done in the vdpa > framework since it looks like a common task? Can > "vd_dev->vdev.dev.parent = vdpa->dev->paren...
2020 Feb 04
2
[PATCH 5/5] vdpasim: vDPA device simulator
...MHO, it would be nice if dma_ops of the parent device could be > re-used. vdpa_device is expecting to represent a physical device > except this simulator, however, there are not enough information in > vdpa_device.dev to indicating which kind physical device it attached > to. Namely get_arch_dma_ops(struct bus type) can not work on > vdpa_device.dev. Then it seems device drivers need to implement a wrap > of dma_ops of parent devices. Can this work be done in the vdpa > framework since it looks like a common task? Can > "vd_dev->vdev.dev.parent = vdpa->dev->paren...
2019 Oct 14
3
[PATCH 1/2] dma-mapping: Add dma_addr_is_phys_addr()
...powerpc/include/asm/dma-mapping.h > +++ b/arch/powerpc/include/asm/dma-mapping.h > @@ -5,6 +5,8 @@ > #ifndef _ASM_DMA_MAPPING_H > #define _ASM_DMA_MAPPING_H > > +#include <asm/svm.h> > + > static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus) > { > /* We don't handle the NULL dev case for ISA for now. We could > @@ -15,4 +17,23 @@ static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus) > return NULL; > } > > +#ifdef CONFIG_ARCH_HAS_DMA_ADDR_IS_PHYS_ADDR &...
2019 Oct 14
3
[PATCH 1/2] dma-mapping: Add dma_addr_is_phys_addr()
...powerpc/include/asm/dma-mapping.h > +++ b/arch/powerpc/include/asm/dma-mapping.h > @@ -5,6 +5,8 @@ > #ifndef _ASM_DMA_MAPPING_H > #define _ASM_DMA_MAPPING_H > > +#include <asm/svm.h> > + > static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus) > { > /* We don't handle the NULL dev case for ISA for now. We could > @@ -15,4 +17,23 @@ static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus) > return NULL; > } > > +#ifdef CONFIG_ARCH_HAS_DMA_ADDR_IS_PHYS_ADDR &...
2019 Oct 12
0
[PATCH 1/2] dma-mapping: Add dma_addr_is_phys_addr()
...6f7..f92c0a4b 100644 --- a/arch/powerpc/include/asm/dma-mapping.h +++ b/arch/powerpc/include/asm/dma-mapping.h @@ -5,6 +5,8 @@ #ifndef _ASM_DMA_MAPPING_H #define _ASM_DMA_MAPPING_H +#include <asm/svm.h> + static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus) { /* We don't handle the NULL dev case for ISA for now. We could @@ -15,4 +17,23 @@ static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus) return NULL; } +#ifdef CONFIG_ARCH_HAS_DMA_ADDR_IS_PHYS_ADDR +/** + * dma_addr_is_phys_addr -...
2019 Oct 14
0
[PATCH 1/2] dma-mapping: Add dma_addr_is_phys_addr()
...mapping.h >> +++ b/arch/powerpc/include/asm/dma-mapping.h >> @@ -5,6 +5,8 @@ >> #ifndef _ASM_DMA_MAPPING_H >> #define _ASM_DMA_MAPPING_H >> >> +#include <asm/svm.h> >> + >> static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus) >> { >> /* We don't handle the NULL dev case for ISA for now. We could >> @@ -15,4 +17,23 @@ static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus) >> return NULL; >> } >> >> +#ifdef CONFIG...
2019 Oct 12
4
[PATCH 0/2] virtio: Support encrypted memory on powerpc secure guests
**We would like the patches to be merged through the virtio tree. Please review, and ack merging the DMA mapping change through that tree. Thanks!** The memory of powerpc secure guests can't be accessed by the hypervisor / virtio device except for a few memory regions designated as 'shared'. At the moment, Linux uses bounce-buffering to communicate with the hypervisor,
2019 Apr 09
0
[RFC PATCH 03/12] s390/mm: force swiotlb for protected virtualization
.../include/asm/dma-mapping.h > @@ -0,0 +1,13 @@ > +/* SPDX-License-Identifier: GPL-2.0 */ > +#ifndef _ASM_S390_DMA_MAPPING_H > +#define _ASM_S390_DMA_MAPPING_H > + > +#include <linux/dma-contiguous.h> > + > +static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus) > +{ > + return NULL; > +} > + > +#endif /* _ASM_S390_DMA_MAPPING_H */ > + Congratulations! You ust create an entirely pointless duplicate of include/asm-generic/dma-mapping.h.
2020 Feb 04
0
[PATCH 5/5] vdpasim: vDPA device simulator
...nice if dma_ops of the parent device could be re-used. > > vdpa_device is expecting to represent a physical device except this > > simulator, however, there are not enough information in vdpa_device.dev > > to indicating which kind physical device it attached to. Namely > > get_arch_dma_ops(struct bus type) can not work on vdpa_device.dev. Then > > it seems device drivers need to implement a wrap of dma_ops of parent > > devices. Can this work be done in the vdpa framework since it looks like > > a common task? Can "vd_dev->vdev.dev.parent = vdpa->dev-&gt...