[dpdk-dev] [PATCH v3 04/10] net/virtio: add PCI ops for queue/irq binding
Jianfeng Tan
jianfeng.tan at intel.com
Mon Jan 16 15:46:56 CET 2017
Add handler in virtio_pci_ops to set queue/irq bind.
Signed-off-by: Jianfeng Tan <jianfeng.tan at intel.com>
---
drivers/net/virtio/virtio_pci.c | 23 +++++++++++++++++++++++
drivers/net/virtio/virtio_pci.h | 3 +++
2 files changed, 26 insertions(+)
diff --git a/drivers/net/virtio/virtio_pci.c b/drivers/net/virtio/virtio_pci.c
index 3ca6ba1..6d2d10d 100644
--- a/drivers/net/virtio/virtio_pci.c
+++ b/drivers/net/virtio/virtio_pci.c
@@ -219,6 +219,19 @@ legacy_set_config_irq(struct virtio_hw *hw, uint16_t vec)
}
static uint16_t
+legacy_set_queue_irq(struct virtio_hw *hw, struct virtqueue *vq, uint16_t vec)
+{
+ uint16_t dst;
+
+ rte_eal_pci_ioport_write(VTPCI_IO(hw), &vq->vq_queue_index, 2,
+ VIRTIO_PCI_QUEUE_SEL);
+ rte_eal_pci_ioport_write(VTPCI_IO(hw), &vec, 2,
+ VIRTIO_MSI_QUEUE_VECTOR);
+ rte_eal_pci_ioport_read(VTPCI_IO(hw), &dst, 2, VIRTIO_MSI_QUEUE_VECTOR);
+ return dst;
+}
+
+static uint16_t
legacy_get_queue_num(struct virtio_hw *hw, uint16_t queue_id)
{
uint16_t dst;
@@ -313,6 +326,7 @@ const struct virtio_pci_ops legacy_ops = {
.set_features = legacy_set_features,
.get_isr = legacy_get_isr,
.set_config_irq = legacy_set_config_irq,
+ .set_queue_irq = legacy_set_queue_irq,
.get_queue_num = legacy_get_queue_num,
.setup_queue = legacy_setup_queue,
.del_queue = legacy_del_queue,
@@ -452,6 +466,14 @@ modern_set_config_irq(struct virtio_hw *hw, uint16_t vec)
}
static uint16_t
+modern_set_queue_irq(struct virtio_hw *hw, struct virtqueue *vq, uint16_t vec)
+{
+ io_write16(vq->vq_queue_index, &hw->common_cfg->queue_select);
+ io_write16(vec, &hw->common_cfg->queue_msix_vector);
+ return io_read16(&hw->common_cfg->queue_msix_vector);
+}
+
+static uint16_t
modern_get_queue_num(struct virtio_hw *hw, uint16_t queue_id)
{
io_write16(queue_id, &hw->common_cfg->queue_select);
@@ -529,6 +551,7 @@ const struct virtio_pci_ops modern_ops = {
.set_features = modern_set_features,
.get_isr = modern_get_isr,
.set_config_irq = modern_set_config_irq,
+ .set_queue_irq = modern_set_queue_irq,
.get_queue_num = modern_get_queue_num,
.setup_queue = modern_setup_queue,
.del_queue = modern_del_queue,
diff --git a/drivers/net/virtio/virtio_pci.h b/drivers/net/virtio/virtio_pci.h
index 588d41f..59e45c4 100644
--- a/drivers/net/virtio/virtio_pci.h
+++ b/drivers/net/virtio/virtio_pci.h
@@ -235,6 +235,9 @@ struct virtio_pci_ops {
uint16_t (*set_config_irq)(struct virtio_hw *hw, uint16_t vec);
+ uint16_t (*set_queue_irq)(struct virtio_hw *hw, struct virtqueue *vq,
+ uint16_t vec);
+
uint16_t (*get_queue_num)(struct virtio_hw *hw, uint16_t queue_id);
int (*setup_queue)(struct virtio_hw *hw, struct virtqueue *vq);
void (*del_queue)(struct virtio_hw *hw, struct virtqueue *vq);
--
2.7.4
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