github/acrn-hypervisor
1
0
Fork 0
mirror of https://github.com/projectacrn/acrn-hypervisor.git synced 2025-09-21 16:57:20 +00:00
Code Issues Projects Releases Wiki Activity

dm: add iothread support in virtio framework

Browse Source 
Add ioeventfd and iothread to virtio framework. When a virtio device
claim to support iothread, virtio framework will register a ioeventfd
and add it to iothread's epoll. After that, the new notify will come
through the iothread instead of the vcpu thread. The notify handler will
be called to process the request.

Tracked-On: #7940
Signed-off-by: Conghui <conghui.chen@intel.com>
Acked-by: Wang, Yu1 <yu1.wang@intel.com>
This commit is contained in:
Conghui
2022-07-15 21:02:46 +08:00
committed by acrnsi-robot
parent 4fd0a1900a
commit fa69f79e33
3 changed files with 165 additions and 48 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
devicemodel/include/virtio.h
View File

@@ -132,6 +132,7 @@
#include "types.h"
#include "timer.h"
#include "iothread.h"
/**
* @brief virtio API
@@ -345,6 +346,7 @@ struct virtio_vq_info;
struct virtio_base {
struct virtio_ops *vops; /**< virtio operations */
int flags; /**< VIRTIO_* flags from above */
bool iothread;
pthread_mutex_t *mtx; /**< POSIX mutex, if any */
struct pci_vdev *dev; /**< PCI device instance */
uint64_t negotiated_caps; /**< negotiated capabilities */
@@ -420,6 +422,15 @@ struct virtio_ops {
* (but more easily) computable, and this time we'll compute them:
* they're just XX_ring[N].
*/
struct virtio_iothread {
struct virtio_base *base;
int idx;
int kick_fd;
bool ioevent_started;
struct iothread_mevent iomvt;
void (*iothread_run)(void *, struct virtio_vq_info *);
};
struct virtio_vq_info {
uint16_t qsize; /**< size of this queue (a power of 2) */
void (*notify)(void *, struct virtio_vq_info *);
@@ -435,6 +446,7 @@ struct virtio_vq_info {
uint16_t msix_idx; /**< MSI-X index, or VIRTIO_MSI_NO_VECTOR */
uint32_t pfn; /**< PFN of virt queue (not shifted!) */
struct virtio_iothread viothrd;
volatile struct vring_desc *desc;
/**< descriptor array */
@@ -764,4 +776,5 @@ uint32_t virtio_device_cfg_read(
int virtio_set_modern_pio_bar(
struct virtio_base *base, int barnum);
int virtio_register_ioeventfd(struct virtio_base *base, int idx, bool is_register);
#endif /* _VIRTIO_H_ */