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e1000: add Rx interrupt handler

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When datapath rxq interrupt is enabled, enable related device rxq.
Remove the interrupt handler after device stopped.
e1000 only support one type of interrupt cause, so remove lsc interrupt
handler if rxq enabled.

Signed-off-by: Marvin Liu <yong.liu@intel.com>
Acked-by: Cunming Liang <cunming.liang@intel.com>
This commit is contained in:
Yong Liu 2015-10-29 17:18:41 +08:00 committed by Thomas Monjalon
parent dcfd32cfa2
commit 921a72008f
1 changed files with 54 additions and 8 deletions
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50
drivers/net/e1000/em_ethdev.c
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@ -501,7 +501,9 @@ eth_em_start(struct rte_eth_dev *dev)
E1000_DEV_PRIVATE(dev->data->dev_private);
struct e1000_hw *hw =
E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
struct rte_intr_handle *intr_handle = &dev->pci_dev->intr_handle;
int ret, mask;
uint32_t intr_vector = 0;
PMD_INIT_FUNC_TRACE();
@ -537,6 +539,26 @@ eth_em_start(struct rte_eth_dev *dev)
/* Configure for OS presence */
em_init_manageability(hw);
if (dev->data->dev_conf.intr_conf.rxq != 0) {
intr_vector = dev->data->nb_rx_queues;
if (rte_intr_efd_enable(intr_handle, intr_vector))
return -1;
}
if (rte_intr_dp_is_en(intr_handle)) {
intr_handle->intr_vec =
rte_zmalloc("intr_vec",
dev->data->nb_rx_queues * sizeof(int), 0);
if (intr_handle->intr_vec == NULL) {
PMD_INIT_LOG(ERR, "Failed to allocate %d rx_queues"
" intr_vec\n", dev->data->nb_rx_queues);
return -ENOMEM;
}
/* enable rx interrupt */
em_rxq_intr_enable(hw);
}
eth_em_tx_init(dev);
ret = eth_em_rx_init(dev);
@ -608,19 +630,29 @@ eth_em_start(struct rte_eth_dev *dev)
}
e1000_setup_link(hw);
/* check if lsc interrupt feature is enabled */
if (dev->data->dev_conf.intr_conf.lsc != 0) {
if (rte_intr_allow_others(intr_handle)) {
/* check if lsc interrupt is enabled */
if (dev->data->dev_conf.intr_conf.lsc != 0)
ret = eth_em_interrupt_setup(dev);
if (ret) {
PMD_INIT_LOG(ERR, "Unable to setup interrupts");
em_dev_clear_queues(dev);
return ret;
}
} else {
rte_intr_callback_unregister(intr_handle,
eth_em_interrupt_handler,
(void *)dev);
if (dev->data->dev_conf.intr_conf.lsc != 0)
PMD_INIT_LOG(INFO, "lsc won't enable because of"
" no intr multiplex\n");
}
/* check if rxq interrupt is enabled */
if (dev->data->dev_conf.intr_conf.rxq != 0)
eth_em_rxq_interrupt_setup(dev);
rte_intr_enable(intr_handle);
adapter->stopped = 0;
PMD_INIT_LOG(DEBUG, "<<");
@ -646,6 +678,7 @@ eth_em_stop(struct rte_eth_dev *dev)
{
struct rte_eth_link link;
struct e1000_hw *hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
struct rte_intr_handle *intr_handle = &dev->pci_dev->intr_handle;
em_rxq_intr_disable(hw);
em_lsc_intr_disable(hw);
@ -662,6 +695,19 @@ eth_em_stop(struct rte_eth_dev *dev)
/* clear the recorded link status */
memset(&link, 0, sizeof(link));
rte_em_dev_atomic_write_link_status(dev, &link);
if (!rte_intr_allow_others(intr_handle))
/* resume to the default handler */
rte_intr_callback_register(intr_handle,
eth_em_interrupt_handler,
(void *)dev);
/* Clean datapath event and queue/vec mapping */
rte_intr_efd_disable(intr_handle);
if (intr_handle->intr_vec != NULL) {
rte_free(intr_handle->intr_vec);
intr_handle->intr_vec = NULL;
}
}
static void