# 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
* 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);
projects / thirdparty / linux.git / commitdiff
