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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2017-03-31 13:01:46 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2017-03-31 13:01:46 +0200 |
| commit | 6fb81d69d0bb455e6dbb5bd99529e2dea74b93e7 (patch) | |
| tree | 50ec4711bfb152cf463616b5789f42858409c5ad /include/uapi | |
| parent | 485527ba578254bb1171b13c55394257fd63cd59 (diff) | |
| parent | 1877888d0ad21858693d8a5594734b125a068638 (diff) | |
| download | linux-6fb81d69d0bb455e6dbb5bd99529e2dea74b93e7.tar.gz linux-6fb81d69d0bb455e6dbb5bd99529e2dea74b93e7.tar.bz2 linux-6fb81d69d0bb455e6dbb5bd99529e2dea74b93e7.zip | |
Merge branch 'vfio-ccw-for-martin' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/vfio-ccw into features
Pull vfio-ccw branch to add the basic channel I/O passthrough
intrastructure based on vfio.
The focus is on supporting dasd-eckd(cu_type/dev_type = 0x3990/0x3390)
as the target device.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/linux/vfio.h | 18 | ||||
| -rw-r--r-- | include/uapi/linux/vfio_ccw.h | 24 |
2 files changed, 42 insertions, 0 deletions
diff --git a/include/uapi/linux/vfio.h b/include/uapi/linux/vfio.h index 519eff362c1c..ae461050661a 100644 --- a/include/uapi/linux/vfio.h +++ b/include/uapi/linux/vfio.h @@ -198,6 +198,7 @@ struct vfio_device_info { #define VFIO_DEVICE_FLAGS_PCI (1 << 1) /* vfio-pci device */ #define VFIO_DEVICE_FLAGS_PLATFORM (1 << 2) /* vfio-platform device */ #define VFIO_DEVICE_FLAGS_AMBA (1 << 3) /* vfio-amba device */ +#define VFIO_DEVICE_FLAGS_CCW (1 << 4) /* vfio-ccw device */ __u32 num_regions; /* Max region index + 1 */ __u32 num_irqs; /* Max IRQ index + 1 */ }; @@ -212,6 +213,7 @@ struct vfio_device_info { #define VFIO_DEVICE_API_PCI_STRING "vfio-pci" #define VFIO_DEVICE_API_PLATFORM_STRING "vfio-platform" #define VFIO_DEVICE_API_AMBA_STRING "vfio-amba" +#define VFIO_DEVICE_API_CCW_STRING "vfio-ccw" /** * VFIO_DEVICE_GET_REGION_INFO - _IOWR(VFIO_TYPE, VFIO_BASE + 8, @@ -446,6 +448,22 @@ enum { VFIO_PCI_NUM_IRQS }; +/* + * The vfio-ccw bus driver makes use of the following fixed region and + * IRQ index mapping. Unimplemented regions return a size of zero. + * Unimplemented IRQ types return a count of zero. + */ + +enum { + VFIO_CCW_CONFIG_REGION_INDEX, + VFIO_CCW_NUM_REGIONS +}; + +enum { + VFIO_CCW_IO_IRQ_INDEX, + VFIO_CCW_NUM_IRQS +}; + /** * VFIO_DEVICE_GET_PCI_HOT_RESET_INFO - _IORW(VFIO_TYPE, VFIO_BASE + 12, * struct vfio_pci_hot_reset_info) diff --git a/include/uapi/linux/vfio_ccw.h b/include/uapi/linux/vfio_ccw.h new file mode 100644 index 000000000000..34a7f6f9e065 --- /dev/null +++ b/include/uapi/linux/vfio_ccw.h @@ -0,0 +1,24 @@ +/* + * Interfaces for vfio-ccw + * + * Copyright IBM Corp. 2017 + * + * Author(s): Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> + */ + +#ifndef _VFIO_CCW_H_ +#define _VFIO_CCW_H_ + +#include <linux/types.h> + +struct ccw_io_region { +#define ORB_AREA_SIZE 12 + __u8 orb_area[ORB_AREA_SIZE]; +#define SCSW_AREA_SIZE 12 + __u8 scsw_area[SCSW_AREA_SIZE]; +#define IRB_AREA_SIZE 96 + __u8 irb_area[IRB_AREA_SIZE]; + __u32 ret_code; +} __packed; + +#endif |