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4e149e431a
We implement the basic ccw command handling infrastructure here: 1. Translate the ccw commands. 2. Issue the translated ccw commands to the device. 3. Once we get the execution result, update the guest SCSW with it. Acked-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Signed-off-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> Message-Id: <20170317031743.40128-9-bjsdjshi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
54 lines
1.4 KiB
C
54 lines
1.4 KiB
C
/*
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* Private stuff for vfio_ccw driver
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*
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* Copyright IBM Corp. 2017
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*
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* Author(s): Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com>
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* Xiao Feng Ren <renxiaof@linux.vnet.ibm.com>
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*/
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#ifndef _VFIO_CCW_PRIVATE_H_
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#define _VFIO_CCW_PRIVATE_H_
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#include <linux/completion.h>
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#include <linux/vfio_ccw.h>
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#include "css.h"
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#include "vfio_ccw_cp.h"
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/**
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* struct vfio_ccw_private
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* @sch: pointer to the subchannel
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* @completion: synchronization helper of the I/O completion
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* @avail: available for creating a mediated device
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* @mdev: pointer to the mediated device
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* @nb: notifier for vfio events
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* @io_region: MMIO region to input/output I/O arguments/results
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* @wait_q: wait for interrupt
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* @intparm: record current interrupt parameter, used for wait interrupt
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* @cp: channel program for the current I/O operation
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* @irb: irb info received from interrupt
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* @scsw: scsw info
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*/
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struct vfio_ccw_private {
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struct subchannel *sch;
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struct completion *completion;
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atomic_t avail;
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struct mdev_device *mdev;
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struct notifier_block nb;
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struct ccw_io_region io_region;
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wait_queue_head_t wait_q;
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u32 intparm;
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struct channel_program cp;
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struct irb irb;
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union scsw scsw;
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} __aligned(8);
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extern int vfio_ccw_mdev_reg(struct subchannel *sch);
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extern void vfio_ccw_mdev_unreg(struct subchannel *sch);
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extern int vfio_ccw_sch_quiesce(struct subchannel *sch);
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extern int vfio_ccw_sch_cmd_request(struct vfio_ccw_private *private);
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#endif
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