Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / vfio / pci / vfio_pci_private.h

diff --git a/kernel/drivers/vfio/pci/vfio_pci_private.h b/kernel/drivers/vfio/pci/vfio_pci_private.h
new file mode 100644 (file)
index 0000000..ae0e1b4
--- /dev/null
+++ b/kernel/drivers/vfio/pci/vfio_pci_private.h
@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) 2012 Red Hat, Inc.  All rights reserved.
+ *     Author: Alex Williamson <alex.williamson@redhat.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Derived from original vfio:
+ * Copyright 2010 Cisco Systems, Inc.  All rights reserved.
+ * Author: Tom Lyon, pugs@cisco.com
+ */
+
+#include <linux/mutex.h>
+#include <linux/pci.h>
+
+#ifndef VFIO_PCI_PRIVATE_H
+#define VFIO_PCI_PRIVATE_H
+
+#define VFIO_PCI_OFFSET_SHIFT   40
+
+#define VFIO_PCI_OFFSET_TO_INDEX(off)  (off >> VFIO_PCI_OFFSET_SHIFT)
+#define VFIO_PCI_INDEX_TO_OFFSET(index)        ((u64)(index) << VFIO_PCI_OFFSET_SHIFT)
+#define VFIO_PCI_OFFSET_MASK   (((u64)(1) << VFIO_PCI_OFFSET_SHIFT) - 1)
+
+struct vfio_pci_irq_ctx {
+       struct eventfd_ctx      *trigger;
+       struct virqfd           *unmask;
+       struct virqfd           *mask;
+       char                    *name;
+       bool                    masked;
+};
+
+struct vfio_pci_device {
+       struct pci_dev          *pdev;
+       void __iomem            *barmap[PCI_STD_RESOURCE_END + 1];
+       u8                      *pci_config_map;
+       u8                      *vconfig;
+       struct perm_bits        *msi_perm;
+       spinlock_t              irqlock;
+       struct mutex            igate;
+       struct msix_entry       *msix;
+       struct vfio_pci_irq_ctx *ctx;
+       int                     num_ctx;
+       int                     irq_type;
+       u8                      msi_qmax;
+       u8                      msix_bar;
+       u16                     msix_size;
+       u32                     msix_offset;
+       u32                     rbar[7];
+       bool                    pci_2_3;
+       bool                    virq_disabled;
+       bool                    reset_works;
+       bool                    extended_caps;
+       bool                    bardirty;
+       bool                    has_vga;
+       bool                    needs_reset;
+       struct pci_saved_state  *pci_saved_state;
+       int                     refcnt;
+       struct eventfd_ctx      *err_trigger;
+       struct eventfd_ctx      *req_trigger;
+};
+
+#define is_intx(vdev) (vdev->irq_type == VFIO_PCI_INTX_IRQ_INDEX)
+#define is_msi(vdev) (vdev->irq_type == VFIO_PCI_MSI_IRQ_INDEX)
+#define is_msix(vdev) (vdev->irq_type == VFIO_PCI_MSIX_IRQ_INDEX)
+#define is_irq_none(vdev) (!(is_intx(vdev) || is_msi(vdev) || is_msix(vdev)))
+#define irq_is(vdev, type) (vdev->irq_type == type)
+
+extern void vfio_pci_intx_mask(struct vfio_pci_device *vdev);
+extern void vfio_pci_intx_unmask(struct vfio_pci_device *vdev);
+
+extern int vfio_pci_set_irqs_ioctl(struct vfio_pci_device *vdev,
+                                  uint32_t flags, unsigned index,
+                                  unsigned start, unsigned count, void *data);
+
+extern ssize_t vfio_pci_config_rw(struct vfio_pci_device *vdev,
+                                 char __user *buf, size_t count,
+                                 loff_t *ppos, bool iswrite);
+
+extern ssize_t vfio_pci_bar_rw(struct vfio_pci_device *vdev, char __user *buf,
+                              size_t count, loff_t *ppos, bool iswrite);
+
+extern ssize_t vfio_pci_vga_rw(struct vfio_pci_device *vdev, char __user *buf,
+                              size_t count, loff_t *ppos, bool iswrite);
+
+extern int vfio_pci_init_perm_bits(void);
+extern void vfio_pci_uninit_perm_bits(void);
+
+extern int vfio_config_init(struct vfio_pci_device *vdev);
+extern void vfio_config_free(struct vfio_pci_device *vdev);
+#endif /* VFIO_PCI_PRIVATE_H */