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[virtio] Update driver to use DMA API

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Signed-off-by: Aaron Young <aaron.young@oracle.com>
This commit is contained in:
Aaron Young
2021-10-27 16:05:43 -07:00
committed by Michael Brown
parent 2265a65191
commit f24a2794e1
5 changed files with 69 additions and 31 deletions
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8
src/include/ipxe/virtio-pci.h
View File

@@ -1,6 +1,8 @@
#ifndef _VIRTIO_PCI_H_
# define _VIRTIO_PCI_H_
#include <ipxe/dma.h>
/* A 32-bit r/o bitmask of the features supported by the host */
#define VIRTIO_PCI_HOST_FEATURES 0
@@ -198,7 +200,8 @@ struct vring_virtqueue;
void vp_free_vq(struct vring_virtqueue *vq);
int vp_find_vq(unsigned int ioaddr, int queue_index,
struct vring_virtqueue *vq);
struct vring_virtqueue *vq, struct dma_device *dma_dev,
size_t header_size);
/* Virtio 1.0 I/O routines abstract away the three possible HW access
@@ -298,7 +301,8 @@ void vpm_notify(struct virtio_pci_modern_device *vdev,
struct vring_virtqueue *vq);
int vpm_find_vqs(struct virtio_pci_modern_device *vdev,
unsigned nvqs, struct vring_virtqueue *vqs);
unsigned nvqs, struct vring_virtqueue *vqs,
struct dma_device *dma_dev, size_t header_size);
int virtio_pci_find_capability(struct pci_device *pci, uint8_t cfg_type);

7
src/include/ipxe/virtio-ring.h
View File

@@ -2,6 +2,7 @@
# define _VIRTIO_RING_H_
#include <ipxe/virtio-pci.h>
#include <ipxe/dma.h>
/* Status byte for guest to report progress, and synchronize features. */
/* We have seen device and processed generic fields (VIRTIO_CONFIG_F_VIRTIO) */
@@ -74,17 +75,21 @@ struct vring {
struct vring_virtqueue {
unsigned char *queue;
size_t queue_size;
struct dma_mapping map;
struct dma_device *dma;
struct vring vring;
u16 free_head;
u16 last_used_idx;
void **vdata;
struct virtio_net_hdr_modern *empty_header;
/* PCI */
int queue_index;
struct virtio_pci_region notification;
};
struct vring_list {
char *addr;
physaddr_t addr;
unsigned int length;
};