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63f1934d56
To make vfio support subchannel devices, we need a css driver for the vfio subchannels. This patch adds a basic vfio-ccw subchannel driver for this purpose. To enable VFIO for vfio-ccw, enable S390_CCW_IOMMU config option and configure VFIO as required. Acked-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Signed-off-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> Message-Id: <20170317031743.40128-5-bjsdjshi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
30 lines
961 B
C
30 lines
961 B
C
#ifndef _ASM_S390_ISC_H
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#define _ASM_S390_ISC_H
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#include <linux/types.h>
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/*
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* I/O interruption subclasses used by drivers.
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* Please add all used iscs here so that it is possible to distribute
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* isc usage between drivers.
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* Reminder: 0 is highest priority, 7 lowest.
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*/
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#define MAX_ISC 7
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/* Regular I/O interrupts. */
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#define IO_SCH_ISC 3 /* regular I/O subchannels */
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#define CONSOLE_ISC 1 /* console I/O subchannel */
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#define EADM_SCH_ISC 4 /* EADM subchannels */
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#define CHSC_SCH_ISC 7 /* CHSC subchannels */
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#define VFIO_CCW_ISC IO_SCH_ISC /* VFIO-CCW I/O subchannels */
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/* Adapter interrupts. */
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#define QDIO_AIRQ_ISC IO_SCH_ISC /* I/O subchannel in qdio mode */
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#define PCI_ISC 2 /* PCI I/O subchannels */
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#define AP_ISC 6 /* adjunct processor (crypto) devices */
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/* Functions for registration of I/O interruption subclasses */
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void isc_register(unsigned int isc);
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void isc_unregister(unsigned int isc);
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#endif /* _ASM_S390_ISC_H */
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