diff --git a/MAINTAINERS b/MAINTAINERS
index c9467d2839f5e894adc11c06949a842a0a9bd39f..7f0fcaa8ee677fbea740c7bc11e968f449f6153f 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -19466,6 +19466,7 @@ T: git git://github.com/awilliam/linux-vfio.git
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
diff --git a/drivers/vfio/pci/Kconfig b/drivers/vfio/pci/Kconfig
index afdab7d71e98cc1e16606b0a4fcdec987b10cab2..860424ccda1bf11f1662a4629b068c353db42964 100644
--- a/drivers/vfio/pci/Kconfig
+++ b/drivers/vfio/pci/Kconfig
@@ -1,19 +1,28 @@
# 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
@@ -22,14 +31,8 @@ config VFIO_PCI_VGA
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
@@ -39,5 +42,5 @@ config VFIO_PCI_IGD
and LPC bridge config space.
To enable Intel IGD assignment through vfio-pci, say Y.
-
+endif
endif
diff --git a/drivers/vfio/pci/Makefile b/drivers/vfio/pci/Makefile
index 8aa517b4b67171bb4a907394c4ac5d7a15ef9c2f..349d68d242b4253c5dae31efc9a8c6343c4ca434 100644
--- a/drivers/vfio/pci/Makefile
+++ b/drivers/vfio/pci/Makefile
@@ -1,7 +1,9 @@
# 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
diff --git a/drivers/vfio/pci/vfio_pci.c b/drivers/vfio/pci/vfio_pci.c
index 85fd638a59553b08b472b487935ff63be1945993..a5ce92beb6557d45f03851b42779a684f03c0580 100644
--- a/drivers/vfio/pci/vfio_pci.c
+++ b/drivers/vfio/pci/vfio_pci.c
@@ -25,7 +25,7 @@
#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"
@@ -153,6 +153,7 @@ static int vfio_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
ret = vfio_pci_core_register_device(vdev);
if (ret)
goto out_free;
+ dev_set_drvdata(&pdev->dev, vdev);
return 0;
out_free:
@@ -246,14 +247,10 @@ static int __init vfio_pci_init(void)
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();
@@ -261,17 +258,12 @@ static int __init vfio_pci_init(void)
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);
diff --git a/drivers/vfio/pci/vfio_pci_config.c b/drivers/vfio/pci/vfio_pci_config.c
index 1f034f768a27094ad1da8f385662296091e2201b..6e58b4bf7a60139dfd716c6ba2d6d8f31dbd72fb 100644
--- a/drivers/vfio/pci/vfio_pci_config.c
+++ b/drivers/vfio/pci/vfio_pci_config.c
@@ -26,7 +26,7 @@
#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
diff --git a/drivers/vfio/pci/vfio_pci_core.c b/drivers/vfio/pci/vfio_pci_core.c
index 65eafaafb2e05cb79eec413426ff8839ccdd5815..675616e08897195663bf4f49fe1c6ef11cbbe0a7 100644
--- a/drivers/vfio/pci/vfio_pci_core.c
+++ b/drivers/vfio/pci/vfio_pci_core.c
@@ -8,6 +8,8 @@
* 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>
@@ -25,7 +27,10 @@
#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;
@@ -306,6 +311,7 @@ int vfio_pci_core_enable(struct vfio_pci_core_device *vdev)
return 0;
}
+EXPORT_SYMBOL_GPL(vfio_pci_core_enable);
void vfio_pci_core_disable(struct vfio_pci_core_device *vdev)
{
@@ -403,6 +409,7 @@ 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)
{
@@ -459,6 +466,7 @@ void vfio_pci_core_close_device(struct vfio_device *core_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)
{
@@ -466,6 +474,7 @@ 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)
{
@@ -624,6 +633,7 @@ int vfio_pci_register_dev_region(struct vfio_pci_core_device *vdev,
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)
@@ -1168,6 +1178,7 @@ long vfio_pci_core_ioctl(struct vfio_device *core_vdev, unsigned int cmd,
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)
@@ -1211,6 +1222,7 @@ ssize_t vfio_pci_core_read(struct vfio_device *core_vdev, char __user *buf,
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)
@@ -1223,6 +1235,7 @@ ssize_t vfio_pci_core_write(struct vfio_device *core_vdev, const char __user *bu
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)
@@ -1501,6 +1514,7 @@ int vfio_pci_core_mmap(struct vfio_device *core_vdev, struct vm_area_struct *vma
return 0;
}
+EXPORT_SYMBOL_GPL(vfio_pci_core_mmap);
void vfio_pci_core_request(struct vfio_device *core_vdev, unsigned int count)
{
@@ -1523,6 +1537,7 @@ 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)
@@ -1667,6 +1682,7 @@ int vfio_pci_core_match(struct vfio_device *core_vdev, char *buf)
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)
@@ -1775,6 +1791,7 @@ void vfio_pci_core_init_device(struct vfio_pci_core_device *vdev,
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)
{
@@ -1785,6 +1802,7 @@ 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)
{
@@ -1852,7 +1870,6 @@ 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:
@@ -1864,6 +1881,7 @@ int vfio_pci_core_register_device(struct vfio_pci_core_device *vdev)
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)
{
@@ -1881,6 +1899,7 @@ 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)
@@ -1924,10 +1943,12 @@ int vfio_pci_core_sriov_configure(struct pci_dev *pdev, int nr_virtfn)
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)
@@ -2116,16 +2137,22 @@ void vfio_pci_core_set_params(bool is_nointxmask, bool is_disable_vga,
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);
diff --git a/drivers/vfio/pci/vfio_pci_igd.c b/drivers/vfio/pci/vfio_pci_igd.c
index a324ca7e6b5a2907ca40458c713dd0c615f6c093..7ca4109bba48281f5fcc850b01300e91c64eb792 100644
--- a/drivers/vfio/pci/vfio_pci_igd.c
+++ b/drivers/vfio/pci/vfio_pci_igd.c
@@ -15,7 +15,7 @@
#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)
diff --git a/drivers/vfio/pci/vfio_pci_intrs.c b/drivers/vfio/pci/vfio_pci_intrs.c
index 945ddbdf4d11bbb6ff20f19f377998799bf59f5b..6069a11fb51acf418bc89a787fb96e81325fbedb 100644
--- a/drivers/vfio/pci/vfio_pci_intrs.c
+++ b/drivers/vfio/pci/vfio_pci_intrs.c
@@ -20,7 +20,7 @@
#include <linux/wait.h>
#include <linux/slab.h>
-#include "vfio_pci_core.h"
+#include <linux/vfio_pci_core.h>
/*
* INTx
diff --git a/drivers/vfio/pci/vfio_pci_rdwr.c b/drivers/vfio/pci/vfio_pci_rdwr.c
index 8fff4689dd44db328b6033a3e5a3db30f7732228..57d3b2cbbd8e5aa08d3ba2a270a4d1fa6ec31ab2 100644
--- a/drivers/vfio/pci/vfio_pci_rdwr.c
+++ b/drivers/vfio/pci/vfio_pci_rdwr.c
@@ -17,7 +17,7 @@
#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
diff --git a/drivers/vfio/pci/vfio_pci_zdev.c b/drivers/vfio/pci/vfio_pci_zdev.c
index 2ffbdc11f08942815e157fa27ea431b0d13e5e83..fe4def9ffffb7518ca8132d8776ec8a7a7b2f4df 100644
--- a/drivers/vfio/pci/vfio_pci_zdev.c
+++ b/drivers/vfio/pci/vfio_pci_zdev.c
@@ -19,7 +19,7 @@
#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.
diff --git a/drivers/vfio/pci/vfio_pci_core.h b/include/linux/vfio_pci_core.h
similarity index 99%
rename from drivers/vfio/pci/vfio_pci_core.h
rename to include/linux/vfio_pci_core.h
index 7a2da1e14de3eeb737dcc56733b53c565b3d6acb..ef9a44b6cf5d5da9c0110c957f24c585368fa43b 100644
--- a/drivers/vfio/pci/vfio_pci_core.h
+++ b/include/linux/vfio_pci_core.h
@@ -207,8 +207,6 @@ static inline int vfio_pci_info_zdev_add_caps(struct vfio_pci_core_device *vdev,
#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);