[dpdk-dev] [PATCH v4 04/10] net/virtio: add PCI ops for queue/irq binding

[Jianfeng Tan]

Add handler in virtio_pci_ops to set queue/irq bind.

Signed-off-by: Jianfeng Tan <jianfeng.tan at intel.com>
Tested-by: Lei Yao <lei.a.yao 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