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virtio: move queue allocation to backend code

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Right now both virtio-pci and virtio-user allocate
the queue via spdk_dma_malloc, but that's about
to change soon.

Change-Id: I3acdad45cd9a0639f9070bc448fdf8f9d2c706c0
Signed-off-by: Dariusz Stojaczyk <dariuszx.stojaczyk@intel.com>
Reviewed-on: https://review.gerrithub.io/417000
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Pawel Wodkowski <pawelx.wodkowski@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
This commit is contained in:
Dariusz Stojaczyk 2018-06-27 12:33:19 +02:00 committed by Jim Harris
parent e724452ec0
commit 3a15b49b05
3 changed files with 30 additions and 24 deletions
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30
lib/virtio/virtio.c
View File

@ -116,11 +116,8 @@ virtio_init_vring(struct virtqueue *vq)
static int
virtio_init_queue(struct virtio_dev *dev, uint16_t vtpci_queue_idx)
{
void *queue_mem;
unsigned int vq_size, size;
uint64_t queue_mem_phys_addr;
struct virtqueue *vq;
int ret;
SPDK_DEBUGLOG(SPDK_LOG_VIRTIO_DEV, "setting up queue: %"PRIu16"\n", vtpci_queue_idx);
@ -164,21 +161,6 @@ virtio_init_queue(struct virtio_dev *dev, uint16_t vtpci_queue_idx)
SPDK_DEBUGLOG(SPDK_LOG_VIRTIO_DEV, "vring_size: %u, rounded_vring_size: %u\n",
size, vq->vq_ring_size);
queue_mem = spdk_dma_zmalloc(vq->vq_ring_size, VIRTIO_PCI_VRING_ALIGN, &queue_mem_phys_addr);
if (queue_mem == NULL) {
ret = -ENOMEM;
goto fail_q_alloc;
}
vq->vq_ring_mem = queue_mem_phys_addr;
vq->vq_ring_virt_mem = queue_mem;
SPDK_DEBUGLOG(SPDK_LOG_VIRTIO_DEV, "vq->vq_ring_mem: 0x%" PRIx64 "\n",
vq->vq_ring_mem);
SPDK_DEBUGLOG(SPDK_LOG_VIRTIO_DEV, "vq->vq_ring_virt_mem: 0x%" PRIx64 "\n",
(uint64_t)(uintptr_t)vq->vq_ring_virt_mem);
virtio_init_vring(vq);
vq->owner_thread = NULL;
if (virtio_dev_backend_ops(dev)->setup_queue(dev, vq) < 0) {
@ -186,12 +168,13 @@ virtio_init_queue(struct virtio_dev *dev, uint16_t vtpci_queue_idx)
return -EINVAL;
}
SPDK_DEBUGLOG(SPDK_LOG_VIRTIO_DEV, "vq->vq_ring_mem: 0x%" PRIx64 "\n",
vq->vq_ring_mem);
SPDK_DEBUGLOG(SPDK_LOG_VIRTIO_DEV, "vq->vq_ring_virt_mem: 0x%" PRIx64 "\n",
(uint64_t)(uintptr_t)vq->vq_ring_virt_mem);
virtio_init_vring(vq);
return 0;
fail_q_alloc:
rte_free(vq);
return ret;
}
static void
@ -212,7 +195,6 @@ virtio_free_queues(struct virtio_dev *dev)
}
virtio_dev_backend_ops(dev)->del_queue(dev, vq);
spdk_dma_free(vq->vq_ring_virt_mem);
rte_free(vq);
dev->vqs[i] = NULL;

12
lib/virtio/virtio_pci.c
View File

@ -261,6 +261,16 @@ modern_setup_queue(struct virtio_dev *dev, struct virtqueue *vq)
struct virtio_hw *hw = dev->ctx;
uint64_t desc_addr, avail_addr, used_addr;
uint16_t notify_off;
void *queue_mem;
uint64_t queue_mem_phys_addr;
queue_mem = spdk_dma_zmalloc(vq->vq_ring_size, VIRTIO_PCI_VRING_ALIGN, &queue_mem_phys_addr);
if (queue_mem == NULL) {
return -ENOMEM;
}
vq->vq_ring_mem = queue_mem_phys_addr;
vq->vq_ring_virt_mem = queue_mem;
if (!check_vq_phys_addr_ok(vq)) {
return -1;
@ -311,6 +321,8 @@ modern_del_queue(struct virtio_dev *dev, struct virtqueue *vq)
&hw->common_cfg->queue_used_hi);
spdk_mmio_write_2(&hw->common_cfg->queue_enable, 0);
spdk_dma_free(vq->vq_ring_virt_mem);
}
static void

12
lib/virtio/virtio_user.c
View File

@ -356,6 +356,8 @@ virtio_user_setup_queue(struct virtio_dev *vdev, struct virtqueue *vq)
struct virtio_user_dev *dev = vdev->ctx;
struct vhost_vring_state state;
uint16_t queue_idx = vq->vq_queue_index;
void *queue_mem;
uint64_t queue_mem_phys_addr;
uint64_t desc_addr, avail_addr, used_addr;
int callfd;
int kickfd;
@ -365,6 +367,14 @@ virtio_user_setup_queue(struct virtio_dev *vdev, struct virtqueue *vq)
return -1;
}
queue_mem = spdk_dma_zmalloc(vq->vq_ring_size, VIRTIO_PCI_VRING_ALIGN, &queue_mem_phys_addr);
if (queue_mem == NULL) {
return -ENOMEM;
}
vq->vq_ring_mem = queue_mem_phys_addr;
vq->vq_ring_virt_mem = queue_mem;
/* May use invalid flag, but some backend uses kickfd and
* callfd as criteria to judge if dev is alive. so finally we
* use real event_fd.
@ -427,6 +437,8 @@ virtio_user_del_queue(struct virtio_dev *vdev, struct virtqueue *vq)
close(dev->kickfds[vq->vq_queue_index]);
dev->callfds[vq->vq_queue_index] = -1;
dev->kickfds[vq->vq_queue_index] = -1;
spdk_dma_free(vq->vq_ring_virt_mem);
}
static void