F: Documentation/driver-api/vfio.rst
F: drivers/vfio/
F: include/linux/vfio.h
+F: include/linux/vfio_pci_core.h
F: include/uapi/linux/vfio.h
VFIO FSL-MC DRIVER
# SPDX-License-Identifier: GPL-2.0-only
-config VFIO_PCI
- tristate "VFIO support for PCI devices"
- depends on PCI
- depends on MMU
+if PCI && MMU
+config VFIO_PCI_CORE
+ tristate
select VFIO_VIRQFD
select IRQ_BYPASS_MANAGER
+
+config VFIO_PCI_MMAP
+ def_bool y if !S390
+
+config VFIO_PCI_INTX
+ def_bool y if !S390
+
+config VFIO_PCI
+ tristate "Generic VFIO support for any PCI device"
+ select VFIO_PCI_CORE
help
- Support for the PCI VFIO bus driver. This is required to make
- use of PCI drivers using the VFIO framework.
+ Support for the generic PCI VFIO bus driver which can connect any
+ PCI device to the VFIO framework.
If you don't know what to do here, say N.
if VFIO_PCI
config VFIO_PCI_VGA
- bool "VFIO PCI support for VGA devices"
+ bool "Generic VFIO PCI support for VGA devices"
depends on X86 && VGA_ARB
help
Support for VGA extension to VFIO PCI. This exposes an additional
If you don't know what to do here, say N.
-config VFIO_PCI_MMAP
- def_bool y if !S390
-
-config VFIO_PCI_INTX
- def_bool y if !S390
-
config VFIO_PCI_IGD
- bool "VFIO PCI extensions for Intel graphics (GVT-d)"
+ bool "Generic VFIO PCI extensions for Intel graphics (GVT-d)"
depends on X86
default y
help
and LPC bridge config space.
To enable Intel IGD assignment through vfio-pci, say Y.
-
+endif
endif
# SPDX-License-Identifier: GPL-2.0-only
-vfio-pci-y := vfio_pci.o vfio_pci_core.o vfio_pci_intrs.o vfio_pci_rdwr.o vfio_pci_config.o
-vfio-pci-$(CONFIG_VFIO_PCI_IGD) += vfio_pci_igd.o
-vfio-pci-$(CONFIG_S390) += vfio_pci_zdev.o
+vfio-pci-core-y := vfio_pci_core.o vfio_pci_intrs.o vfio_pci_rdwr.o vfio_pci_config.o
+vfio-pci-core-$(CONFIG_S390) += vfio_pci_zdev.o
+obj-$(CONFIG_VFIO_PCI_CORE) += vfio-pci-core.o
+vfio-pci-y := vfio_pci.o
+vfio-pci-$(CONFIG_VFIO_PCI_IGD) += vfio_pci_igd.o
obj-$(CONFIG_VFIO_PCI) += vfio-pci.o
#include <linux/types.h>
#include <linux/uaccess.h>
-#include "vfio_pci_core.h"
+#include <linux/vfio_pci_core.h>
#define DRIVER_AUTHOR "Alex Williamson <alex.williamson@redhat.com>"
#define DRIVER_DESC "VFIO PCI - User Level meta-driver"
ret = vfio_pci_core_register_device(vdev);
if (ret)
goto out_free;
+ dev_set_drvdata(&pdev->dev, vdev);
return 0;
out_free:
vfio_pci_core_set_params(nointxmask, is_disable_vga, disable_idle_d3);
- ret = vfio_pci_core_init();
- if (ret)
- return ret;
-
/* Register and scan for devices */
ret = pci_register_driver(&vfio_pci_driver);
if (ret)
- goto out;
+ return ret;
vfio_pci_fill_ids();
pr_warn("device denylist disabled.\n");
return 0;
-
-out:
- vfio_pci_core_cleanup();
- return ret;
}
module_init(vfio_pci_init);
static void __exit vfio_pci_cleanup(void)
{
pci_unregister_driver(&vfio_pci_driver);
- vfio_pci_core_cleanup();
}
module_exit(vfio_pci_cleanup);
#include <linux/vfio.h>
#include <linux/slab.h>
-#include "vfio_pci_core.h"
+#include <linux/vfio_pci_core.h>
/* Fake capability ID for standard config space */
#define PCI_CAP_ID_BASIC 0
* Author: Tom Lyon, pugs@cisco.com
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/device.h>
#include <linux/eventfd.h>
#include <linux/file.h>
#include <linux/nospec.h>
#include <linux/sched/mm.h>
-#include "vfio_pci_core.h"
+#include <linux/vfio_pci_core.h>
+
+#define DRIVER_AUTHOR "Alex Williamson <alex.williamson@redhat.com>"
+#define DRIVER_DESC "core driver for VFIO based PCI devices"
static bool nointxmask;
static bool disable_vga;
return 0;
}
+EXPORT_SYMBOL_GPL(vfio_pci_core_enable);
void vfio_pci_core_disable(struct vfio_pci_core_device *vdev)
{
if (!vfio_pci_dev_set_try_reset(vdev->vdev.dev_set) && !disable_idle_d3)
vfio_pci_set_power_state(vdev, PCI_D3hot);
}
+EXPORT_SYMBOL_GPL(vfio_pci_core_disable);
static struct vfio_pci_core_device *get_pf_vdev(struct vfio_pci_core_device *vdev)
{
}
mutex_unlock(&vdev->igate);
}
+EXPORT_SYMBOL_GPL(vfio_pci_core_close_device);
void vfio_pci_core_finish_enable(struct vfio_pci_core_device *vdev)
{
vfio_spapr_pci_eeh_open(vdev->pdev);
vfio_pci_vf_token_user_add(vdev, 1);
}
+EXPORT_SYMBOL_GPL(vfio_pci_core_finish_enable);
static int vfio_pci_get_irq_count(struct vfio_pci_core_device *vdev, int irq_type)
{
return 0;
}
+EXPORT_SYMBOL_GPL(vfio_pci_register_dev_region);
long vfio_pci_core_ioctl(struct vfio_device *core_vdev, unsigned int cmd,
unsigned long arg)
return -ENOTTY;
}
+EXPORT_SYMBOL_GPL(vfio_pci_core_ioctl);
static ssize_t vfio_pci_rw(struct vfio_pci_core_device *vdev, char __user *buf,
size_t count, loff_t *ppos, bool iswrite)
return vfio_pci_rw(vdev, buf, count, ppos, false);
}
+EXPORT_SYMBOL_GPL(vfio_pci_core_read);
ssize_t vfio_pci_core_write(struct vfio_device *core_vdev, const char __user *buf,
size_t count, loff_t *ppos)
return vfio_pci_rw(vdev, (char __user *)buf, count, ppos, true);
}
+EXPORT_SYMBOL_GPL(vfio_pci_core_write);
/* Return 1 on zap and vma_lock acquired, 0 on contention (only with @try) */
static int vfio_pci_zap_and_vma_lock(struct vfio_pci_core_device *vdev, bool try)
return 0;
}
+EXPORT_SYMBOL_GPL(vfio_pci_core_mmap);
void vfio_pci_core_request(struct vfio_device *core_vdev, unsigned int count)
{
mutex_unlock(&vdev->igate);
}
+EXPORT_SYMBOL_GPL(vfio_pci_core_request);
static int vfio_pci_validate_vf_token(struct vfio_pci_core_device *vdev,
bool vf_token, uuid_t *uuid)
return 1; /* Match */
}
+EXPORT_SYMBOL_GPL(vfio_pci_core_match);
static int vfio_pci_bus_notifier(struct notifier_block *nb,
unsigned long action, void *data)
INIT_LIST_HEAD(&vdev->vma_list);
init_rwsem(&vdev->memory_lock);
}
+EXPORT_SYMBOL_GPL(vfio_pci_core_init_device);
void vfio_pci_core_uninit_device(struct vfio_pci_core_device *vdev)
{
kfree(vdev->region);
kfree(vdev->pm_save);
}
+EXPORT_SYMBOL_GPL(vfio_pci_core_uninit_device);
int vfio_pci_core_register_device(struct vfio_pci_core_device *vdev)
{
ret = vfio_register_group_dev(&vdev->vdev);
if (ret)
goto out_power;
- dev_set_drvdata(&pdev->dev, vdev);
return 0;
out_power:
vfio_iommu_group_put(group, &pdev->dev);
return ret;
}
+EXPORT_SYMBOL_GPL(vfio_pci_core_register_device);
void vfio_pci_core_unregister_device(struct vfio_pci_core_device *vdev)
{
if (!disable_idle_d3)
vfio_pci_set_power_state(vdev, PCI_D0);
}
+EXPORT_SYMBOL_GPL(vfio_pci_core_unregister_device);
static pci_ers_result_t vfio_pci_aer_err_detected(struct pci_dev *pdev,
pci_channel_state_t state)
return ret < 0 ? ret : nr_virtfn;
}
+EXPORT_SYMBOL_GPL(vfio_pci_core_sriov_configure);
const struct pci_error_handlers vfio_pci_core_err_handlers = {
.error_detected = vfio_pci_aer_err_detected,
};
+EXPORT_SYMBOL_GPL(vfio_pci_core_err_handlers);
static bool vfio_dev_in_groups(struct vfio_pci_core_device *vdev,
struct vfio_pci_group_info *groups)
disable_vga = is_disable_vga;
disable_idle_d3 = is_disable_idle_d3;
}
+EXPORT_SYMBOL_GPL(vfio_pci_core_set_params);
-/* This will become the __exit function of vfio_pci_core.ko */
-void vfio_pci_core_cleanup(void)
+static void vfio_pci_core_cleanup(void)
{
vfio_pci_uninit_perm_bits();
}
-/* This will become the __init function of vfio_pci_core.ko */
-int __init vfio_pci_core_init(void)
+static int __init vfio_pci_core_init(void)
{
/* Allocate shared config space permission data used by all devices */
return vfio_pci_init_perm_bits();
}
+
+module_init(vfio_pci_core_init);
+module_exit(vfio_pci_core_cleanup);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Copyright (C) 2012 Red Hat, Inc. All rights reserved.
- * Author: Alex Williamson <alex.williamson@redhat.com>
- *
- * 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>
-#include <linux/vfio.h>
-#include <linux/irqbypass.h>
-#include <linux/types.h>
-#include <linux/uuid.h>
-#include <linux/notifier.h>
-
-#ifndef VFIO_PCI_CORE_H
-#define VFIO_PCI_CORE_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)
-
-/* Special capability IDs predefined access */
-#define PCI_CAP_ID_INVALID 0xFF /* default raw access */
-#define PCI_CAP_ID_INVALID_VIRT 0xFE /* default virt access */
-
-/* Cap maximum number of ioeventfds per device (arbitrary) */
-#define VFIO_PCI_IOEVENTFD_MAX 1000
-
-struct vfio_pci_ioeventfd {
- struct list_head next;
- struct vfio_pci_core_device *vdev;
- struct virqfd *virqfd;
- void __iomem *addr;
- uint64_t data;
- loff_t pos;
- int bar;
- int count;
- bool test_mem;
-};
-
-struct vfio_pci_irq_ctx {
- struct eventfd_ctx *trigger;
- struct virqfd *unmask;
- struct virqfd *mask;
- char *name;
- bool masked;
- struct irq_bypass_producer producer;
-};
-
-struct vfio_pci_core_device;
-struct vfio_pci_region;
-
-struct vfio_pci_regops {
- ssize_t (*rw)(struct vfio_pci_core_device *vdev, char __user *buf,
- size_t count, loff_t *ppos, bool iswrite);
- void (*release)(struct vfio_pci_core_device *vdev,
- struct vfio_pci_region *region);
- int (*mmap)(struct vfio_pci_core_device *vdev,
- struct vfio_pci_region *region,
- struct vm_area_struct *vma);
- int (*add_capability)(struct vfio_pci_core_device *vdev,
- struct vfio_pci_region *region,
- struct vfio_info_cap *caps);
-};
-
-struct vfio_pci_region {
- u32 type;
- u32 subtype;
- const struct vfio_pci_regops *ops;
- void *data;
- size_t size;
- u32 flags;
-};
-
-struct vfio_pci_dummy_resource {
- struct resource resource;
- int index;
- struct list_head res_next;
-};
-
-struct vfio_pci_vf_token {
- struct mutex lock;
- uuid_t uuid;
- int users;
-};
-
-struct vfio_pci_mmap_vma {
- struct vm_area_struct *vma;
- struct list_head vma_next;
-};
-
-struct vfio_pci_core_device {
- struct vfio_device vdev;
- struct pci_dev *pdev;
- void __iomem *barmap[PCI_STD_NUM_BARS];
- bool bar_mmap_supported[PCI_STD_NUM_BARS];
- u8 *pci_config_map;
- u8 *vconfig;
- struct perm_bits *msi_perm;
- spinlock_t irqlock;
- struct mutex igate;
- struct vfio_pci_irq_ctx *ctx;
- int num_ctx;
- int irq_type;
- int num_regions;
- struct vfio_pci_region *region;
- 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;
- bool nointx;
- bool needs_pm_restore;
- struct pci_saved_state *pci_saved_state;
- struct pci_saved_state *pm_save;
- int ioeventfds_nr;
- struct eventfd_ctx *err_trigger;
- struct eventfd_ctx *req_trigger;
- struct list_head dummy_resources_list;
- struct mutex ioeventfds_lock;
- struct list_head ioeventfds_list;
- struct vfio_pci_vf_token *vf_token;
- struct notifier_block nb;
- struct mutex vma_lock;
- struct list_head vma_list;
- struct rw_semaphore memory_lock;
-};
-
-#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_core_device *vdev);
-extern void vfio_pci_intx_unmask(struct vfio_pci_core_device *vdev);
-
-extern int vfio_pci_set_irqs_ioctl(struct vfio_pci_core_device *vdev,
- uint32_t flags, unsigned index,
- unsigned start, unsigned count, void *data);
-
-extern ssize_t vfio_pci_config_rw(struct vfio_pci_core_device *vdev,
- char __user *buf, size_t count,
- loff_t *ppos, bool iswrite);
-
-extern ssize_t vfio_pci_bar_rw(struct vfio_pci_core_device *vdev, char __user *buf,
- size_t count, loff_t *ppos, bool iswrite);
-
-extern ssize_t vfio_pci_vga_rw(struct vfio_pci_core_device *vdev, char __user *buf,
- size_t count, loff_t *ppos, bool iswrite);
-
-extern long vfio_pci_ioeventfd(struct vfio_pci_core_device *vdev, loff_t offset,
- uint64_t data, int count, int fd);
-
-extern int vfio_pci_init_perm_bits(void);
-extern void vfio_pci_uninit_perm_bits(void);
-
-extern int vfio_config_init(struct vfio_pci_core_device *vdev);
-extern void vfio_config_free(struct vfio_pci_core_device *vdev);
-
-extern int vfio_pci_register_dev_region(struct vfio_pci_core_device *vdev,
- unsigned int type, unsigned int subtype,
- const struct vfio_pci_regops *ops,
- size_t size, u32 flags, void *data);
-
-extern int vfio_pci_set_power_state(struct vfio_pci_core_device *vdev,
- pci_power_t state);
-
-extern bool __vfio_pci_memory_enabled(struct vfio_pci_core_device *vdev);
-extern void vfio_pci_zap_and_down_write_memory_lock(struct vfio_pci_core_device
- *vdev);
-extern u16 vfio_pci_memory_lock_and_enable(struct vfio_pci_core_device *vdev);
-extern void vfio_pci_memory_unlock_and_restore(struct vfio_pci_core_device *vdev,
- u16 cmd);
-
-#ifdef CONFIG_VFIO_PCI_IGD
-extern int vfio_pci_igd_init(struct vfio_pci_core_device *vdev);
-#else
-static inline int vfio_pci_igd_init(struct vfio_pci_core_device *vdev)
-{
- return -ENODEV;
-}
-#endif
-
-#ifdef CONFIG_S390
-extern int vfio_pci_info_zdev_add_caps(struct vfio_pci_core_device *vdev,
- struct vfio_info_cap *caps);
-#else
-static inline int vfio_pci_info_zdev_add_caps(struct vfio_pci_core_device *vdev,
- struct vfio_info_cap *caps)
-{
- return -ENODEV;
-}
-#endif
-
-/* Will be exported for vfio pci drivers usage */
-void vfio_pci_core_cleanup(void);
-int vfio_pci_core_init(void);
-void vfio_pci_core_set_params(bool nointxmask, bool is_disable_vga,
- bool is_disable_idle_d3);
-void vfio_pci_core_close_device(struct vfio_device *core_vdev);
-void vfio_pci_core_init_device(struct vfio_pci_core_device *vdev,
- struct pci_dev *pdev,
- const struct vfio_device_ops *vfio_pci_ops);
-int vfio_pci_core_register_device(struct vfio_pci_core_device *vdev);
-void vfio_pci_core_uninit_device(struct vfio_pci_core_device *vdev);
-void vfio_pci_core_unregister_device(struct vfio_pci_core_device *vdev);
-int vfio_pci_core_sriov_configure(struct pci_dev *pdev, int nr_virtfn);
-extern const struct pci_error_handlers vfio_pci_core_err_handlers;
-long vfio_pci_core_ioctl(struct vfio_device *core_vdev, unsigned int cmd,
- unsigned long arg);
-ssize_t vfio_pci_core_read(struct vfio_device *core_vdev, char __user *buf,
- size_t count, loff_t *ppos);
-ssize_t vfio_pci_core_write(struct vfio_device *core_vdev, const char __user *buf,
- size_t count, loff_t *ppos);
-int vfio_pci_core_mmap(struct vfio_device *core_vdev, struct vm_area_struct *vma);
-void vfio_pci_core_request(struct vfio_device *core_vdev, unsigned int count);
-int vfio_pci_core_match(struct vfio_device *core_vdev, char *buf);
-int vfio_pci_core_enable(struct vfio_pci_core_device *vdev);
-void vfio_pci_core_disable(struct vfio_pci_core_device *vdev);
-void vfio_pci_core_finish_enable(struct vfio_pci_core_device *vdev);
-
-static inline bool vfio_pci_is_vga(struct pci_dev *pdev)
-{
- return (pdev->class >> 8) == PCI_CLASS_DISPLAY_VGA;
-}
-
-#endif /* VFIO_PCI_CORE_H */
#include <linux/uaccess.h>
#include <linux/vfio.h>
-#include "vfio_pci_core.h"
+#include <linux/vfio_pci_core.h>
#define OPREGION_SIGNATURE "IntelGraphicsMem"
#define OPREGION_SIZE (8 * 1024)
#include <linux/wait.h>
#include <linux/slab.h>
-#include "vfio_pci_core.h"
+#include <linux/vfio_pci_core.h>
/*
* INTx
#include <linux/vfio.h>
#include <linux/vgaarb.h>
-#include "vfio_pci_core.h"
+#include <linux/vfio_pci_core.h>
#ifdef __LITTLE_ENDIAN
#define vfio_ioread64 ioread64
#include <asm/pci_clp.h>
#include <asm/pci_io.h>
-#include "vfio_pci_core.h"
+#include <linux/vfio_pci_core.h>
/*
* Add the Base PCI Function information to the device info region.
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2012 Red Hat, Inc. All rights reserved.
+ * Author: Alex Williamson <alex.williamson@redhat.com>
+ *
+ * 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>
+#include <linux/vfio.h>
+#include <linux/irqbypass.h>
+#include <linux/types.h>
+#include <linux/uuid.h>
+#include <linux/notifier.h>
+
+#ifndef VFIO_PCI_CORE_H
+#define VFIO_PCI_CORE_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)
+
+/* Special capability IDs predefined access */
+#define PCI_CAP_ID_INVALID 0xFF /* default raw access */
+#define PCI_CAP_ID_INVALID_VIRT 0xFE /* default virt access */
+
+/* Cap maximum number of ioeventfds per device (arbitrary) */
+#define VFIO_PCI_IOEVENTFD_MAX 1000
+
+struct vfio_pci_ioeventfd {
+ struct list_head next;
+ struct vfio_pci_core_device *vdev;
+ struct virqfd *virqfd;
+ void __iomem *addr;
+ uint64_t data;
+ loff_t pos;
+ int bar;
+ int count;
+ bool test_mem;
+};
+
+struct vfio_pci_irq_ctx {
+ struct eventfd_ctx *trigger;
+ struct virqfd *unmask;
+ struct virqfd *mask;
+ char *name;
+ bool masked;
+ struct irq_bypass_producer producer;
+};
+
+struct vfio_pci_core_device;
+struct vfio_pci_region;
+
+struct vfio_pci_regops {
+ ssize_t (*rw)(struct vfio_pci_core_device *vdev, char __user *buf,
+ size_t count, loff_t *ppos, bool iswrite);
+ void (*release)(struct vfio_pci_core_device *vdev,
+ struct vfio_pci_region *region);
+ int (*mmap)(struct vfio_pci_core_device *vdev,
+ struct vfio_pci_region *region,
+ struct vm_area_struct *vma);
+ int (*add_capability)(struct vfio_pci_core_device *vdev,
+ struct vfio_pci_region *region,
+ struct vfio_info_cap *caps);
+};
+
+struct vfio_pci_region {
+ u32 type;
+ u32 subtype;
+ const struct vfio_pci_regops *ops;
+ void *data;
+ size_t size;
+ u32 flags;
+};
+
+struct vfio_pci_dummy_resource {
+ struct resource resource;
+ int index;
+ struct list_head res_next;
+};
+
+struct vfio_pci_vf_token {
+ struct mutex lock;
+ uuid_t uuid;
+ int users;
+};
+
+struct vfio_pci_mmap_vma {
+ struct vm_area_struct *vma;
+ struct list_head vma_next;
+};
+
+struct vfio_pci_core_device {
+ struct vfio_device vdev;
+ struct pci_dev *pdev;
+ void __iomem *barmap[PCI_STD_NUM_BARS];
+ bool bar_mmap_supported[PCI_STD_NUM_BARS];
+ u8 *pci_config_map;
+ u8 *vconfig;
+ struct perm_bits *msi_perm;
+ spinlock_t irqlock;
+ struct mutex igate;
+ struct vfio_pci_irq_ctx *ctx;
+ int num_ctx;
+ int irq_type;
+ int num_regions;
+ struct vfio_pci_region *region;
+ 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;
+ bool nointx;
+ bool needs_pm_restore;
+ struct pci_saved_state *pci_saved_state;
+ struct pci_saved_state *pm_save;
+ int ioeventfds_nr;
+ struct eventfd_ctx *err_trigger;
+ struct eventfd_ctx *req_trigger;
+ struct list_head dummy_resources_list;
+ struct mutex ioeventfds_lock;
+ struct list_head ioeventfds_list;
+ struct vfio_pci_vf_token *vf_token;
+ struct notifier_block nb;
+ struct mutex vma_lock;
+ struct list_head vma_list;
+ struct rw_semaphore memory_lock;
+};
+
+#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_core_device *vdev);
+extern void vfio_pci_intx_unmask(struct vfio_pci_core_device *vdev);
+
+extern int vfio_pci_set_irqs_ioctl(struct vfio_pci_core_device *vdev,
+ uint32_t flags, unsigned index,
+ unsigned start, unsigned count, void *data);
+
+extern ssize_t vfio_pci_config_rw(struct vfio_pci_core_device *vdev,
+ char __user *buf, size_t count,
+ loff_t *ppos, bool iswrite);
+
+extern ssize_t vfio_pci_bar_rw(struct vfio_pci_core_device *vdev, char __user *buf,
+ size_t count, loff_t *ppos, bool iswrite);
+
+extern ssize_t vfio_pci_vga_rw(struct vfio_pci_core_device *vdev, char __user *buf,
+ size_t count, loff_t *ppos, bool iswrite);
+
+extern long vfio_pci_ioeventfd(struct vfio_pci_core_device *vdev, loff_t offset,
+ uint64_t data, int count, int fd);
+
+extern int vfio_pci_init_perm_bits(void);
+extern void vfio_pci_uninit_perm_bits(void);
+
+extern int vfio_config_init(struct vfio_pci_core_device *vdev);
+extern void vfio_config_free(struct vfio_pci_core_device *vdev);
+
+extern int vfio_pci_register_dev_region(struct vfio_pci_core_device *vdev,
+ unsigned int type, unsigned int subtype,
+ const struct vfio_pci_regops *ops,
+ size_t size, u32 flags, void *data);
+
+extern int vfio_pci_set_power_state(struct vfio_pci_core_device *vdev,
+ pci_power_t state);
+
+extern bool __vfio_pci_memory_enabled(struct vfio_pci_core_device *vdev);
+extern void vfio_pci_zap_and_down_write_memory_lock(struct vfio_pci_core_device
+ *vdev);
+extern u16 vfio_pci_memory_lock_and_enable(struct vfio_pci_core_device *vdev);
+extern void vfio_pci_memory_unlock_and_restore(struct vfio_pci_core_device *vdev,
+ u16 cmd);
+
+#ifdef CONFIG_VFIO_PCI_IGD
+extern int vfio_pci_igd_init(struct vfio_pci_core_device *vdev);
+#else
+static inline int vfio_pci_igd_init(struct vfio_pci_core_device *vdev)
+{
+ return -ENODEV;
+}
+#endif
+
+#ifdef CONFIG_S390
+extern int vfio_pci_info_zdev_add_caps(struct vfio_pci_core_device *vdev,
+ struct vfio_info_cap *caps);
+#else
+static inline int vfio_pci_info_zdev_add_caps(struct vfio_pci_core_device *vdev,
+ struct vfio_info_cap *caps)
+{
+ return -ENODEV;
+}
+#endif
+
+/* Will be exported for vfio pci drivers usage */
+void vfio_pci_core_set_params(bool nointxmask, bool is_disable_vga,
+ bool is_disable_idle_d3);
+void vfio_pci_core_close_device(struct vfio_device *core_vdev);
+void vfio_pci_core_init_device(struct vfio_pci_core_device *vdev,
+ struct pci_dev *pdev,
+ const struct vfio_device_ops *vfio_pci_ops);
+int vfio_pci_core_register_device(struct vfio_pci_core_device *vdev);
+void vfio_pci_core_uninit_device(struct vfio_pci_core_device *vdev);
+void vfio_pci_core_unregister_device(struct vfio_pci_core_device *vdev);
+int vfio_pci_core_sriov_configure(struct pci_dev *pdev, int nr_virtfn);
+extern const struct pci_error_handlers vfio_pci_core_err_handlers;
+long vfio_pci_core_ioctl(struct vfio_device *core_vdev, unsigned int cmd,
+ unsigned long arg);
+ssize_t vfio_pci_core_read(struct vfio_device *core_vdev, char __user *buf,
+ size_t count, loff_t *ppos);
+ssize_t vfio_pci_core_write(struct vfio_device *core_vdev, const char __user *buf,
+ size_t count, loff_t *ppos);
+int vfio_pci_core_mmap(struct vfio_device *core_vdev, struct vm_area_struct *vma);
+void vfio_pci_core_request(struct vfio_device *core_vdev, unsigned int count);
+int vfio_pci_core_match(struct vfio_device *core_vdev, char *buf);
+int vfio_pci_core_enable(struct vfio_pci_core_device *vdev);
+void vfio_pci_core_disable(struct vfio_pci_core_device *vdev);
+void vfio_pci_core_finish_enable(struct vfio_pci_core_device *vdev);
+
+static inline bool vfio_pci_is_vga(struct pci_dev *pdev)
+{
+ return (pdev->class >> 8) == PCI_CLASS_DISPLAY_VGA;
+}
+
+#endif /* VFIO_PCI_CORE_H */
projects / linux.git / commitdiff