@@ -27,8 +27,10 @@
/*
* INTx
*/
-static void vfio_send_intx_eventfd(struct vfio_pci_device *vdev, void *unused)
+static void vfio_send_intx_eventfd(void *opaque, void *unused)
{
+ struct vfio_pci_device *vdev = opaque;
+
if (likely(is_intx(vdev) && !vdev->virq_disabled))
eventfd_signal(vdev->ctx[0].trigger, 1);
}
@@ -71,9 +73,9 @@ void vfio_pci_intx_mask(struct vfio_pci_device *vdev)
* a signal is necessary, which can then be handled via a work queue
* or directly depending on the caller.
*/
-static int vfio_pci_intx_unmask_handler(struct vfio_pci_device *vdev,
- void *unused)
+static int vfio_pci_intx_unmask_handler(void *opaque, void *unused)
{
+ struct vfio_pci_device *vdev = opaque;
struct pci_dev *pdev = vdev->pdev;
unsigned long flags;
int ret = 0;
@@ -411,7 +413,8 @@ static int vfio_pci_set_intx_unmask(struct vfio_pci_device *vdev,
} else if (flags & VFIO_IRQ_SET_DATA_EVENTFD) {
int32_t fd = *(int32_t *)data;
if (fd >= 0)
- return virqfd_enable(vdev, vfio_pci_intx_unmask_handler,
+ return virqfd_enable((void *) vdev,
+ vfio_pci_intx_unmask_handler,
vfio_send_intx_eventfd, NULL,
&vdev->ctx[0].unmask, fd);
@@ -14,7 +14,6 @@
#include <linux/eventfd.h>
#include <linux/file.h>
#include <linux/slab.h>
-#include "pci/vfio_pci_private.h"
static struct workqueue_struct *vfio_irqfd_cleanup_wq;
static spinlock_t lock;
@@ -49,7 +48,7 @@ static int virqfd_wakeup(wait_queue_t *wait, unsigned mode, int sync, void *key)
if (flags & POLLIN) {
/* An event has been signaled, call function */
if ((!virqfd->handler ||
- virqfd->handler(virqfd->vdev, virqfd->data)) &&
+ virqfd->handler(virqfd->opaque, virqfd->data)) &&
virqfd->thread)
schedule_work(&virqfd->inject);
}
@@ -99,13 +98,13 @@ static void virqfd_inject(struct work_struct *work)
{
struct virqfd *virqfd = container_of(work, struct virqfd, inject);
if (virqfd->thread)
- virqfd->thread(virqfd->vdev, virqfd->data);
+ virqfd->thread(virqfd->opaque, virqfd->data);
}
-int virqfd_enable(struct vfio_pci_device *vdev,
- int (*handler)(struct vfio_pci_device *, void *),
- void (*thread)(struct vfio_pci_device *, void *),
- void *data, struct virqfd **pvirqfd, int fd)
+int virqfd_enable(void *opaque,
+ int (*handler)(void *, void *),
+ void (*thread)(void *, void *),
+ void *data, struct virqfd **pvirqfd, int fd)
{
struct fd irqfd;
struct eventfd_ctx *ctx;
@@ -118,7 +117,7 @@ int virqfd_enable(struct vfio_pci_device *vdev,
return -ENOMEM;
virqfd->pvirqfd = pvirqfd;
- virqfd->vdev = vdev;
+ virqfd->opaque = opaque;
virqfd->handler = handler;
virqfd->thread = thread;
virqfd->data = data;
@@ -171,7 +170,7 @@ int virqfd_enable(struct vfio_pci_device *vdev,
* before we registered and trigger it as if we didn't miss it.
*/
if (events & POLLIN) {
- if ((!handler || handler(vdev, data)) && thread)
+ if ((!handler || handler(opaque, data)) && thread)
schedule_work(&virqfd->inject);
}
@@ -105,10 +105,10 @@ extern long vfio_external_check_extension(struct vfio_group *group,
* IRQFD support
*/
struct virqfd {
- struct vfio_pci_device *vdev;
+ void *opaque;
struct eventfd_ctx *eventfd;
- int (*handler)(struct vfio_pci_device *, void *);
- void (*thread)(struct vfio_pci_device *, void *);
+ int (*handler)(void *, void *);
+ void (*thread)(void *, void *);
void *data;
struct work_struct inject;
wait_queue_t wait;
@@ -119,9 +119,9 @@ struct virqfd {
extern int vfio_pci_virqfd_init(void);
extern void vfio_pci_virqfd_exit(void);
-extern int virqfd_enable(struct vfio_pci_device *vdev,
- int (*handler)(struct vfio_pci_device *, void *),
- void (*thread)(struct vfio_pci_device *, void *),
+extern int virqfd_enable(void *opaque,
+ int (*handler)(void *, void *),
+ void (*thread)(void *, void *),
void *data, struct virqfd **pvirqfd, int fd);
extern void virqfd_disable(struct virqfd **pvirqfd);
VFIO_PCI passes the VFIO device structure *vdev via eventfd to the handler that implements masking/unmasking of IRQs via an eventfd. We can replace it in the virqfd infrastructure with an opaque type so we can make use of the mechanism from other VFIO bus drivers. Signed-off-by: Antonios Motakis <a.motakis@virtualopensystems.com> --- drivers/vfio/pci/vfio_pci_intrs.c | 11 +++++++---- drivers/vfio/virqfd.c | 17 ++++++++--------- include/linux/vfio.h | 12 ++++++------ 3 files changed, 21 insertions(+), 19 deletions(-)