@@ -130,6 +130,21 @@ Please note that enabling debugging options may affect system performance.
Interrupt Throttling interval.
+Runtime Config Options
+~~~~~~~~~~~~~~~~~~~~~~
+
+- ``Support multiple driver`` (default ``disable``)
+
+ There was a multiple driver support issue during use of 700 series Ethernet
+ Adapter with both Linux kernel and DPDK PMD. To fix this issue, ``devargs``
+ parameter ``support-multi-driver`` is introduced, for example::
+
+ -w 84:00.0,support-multi-driver=1
+
+ With the above configuration, DPDK PMD will not change global registers, and
+ will switch PF interrupt from IntN to Int0 to avoid interrupt conflict between
+ DPDK and Linux Kernel.
+
Driver Compilation
~~~~~~~~~~~~~~~~~~
@@ -760,6 +760,23 @@ static inline void i40e_GLQF_reg_init(struct i40e_hw *hw)
i40e_global_cfg_warning(I40E_WARNING_QINQ_PARSER);
}
+static inline void i40e_config_automask(struct i40e_pf *pf)
+{
+ struct i40e_hw *hw = I40E_PF_TO_HW(pf);
+ uint32_t val;
+
+ /* INTENA flag is not auto-cleared for interrupt */
+ val = I40E_READ_REG(hw, I40E_GLINT_CTL);
+ val |= I40E_GLINT_CTL_DIS_AUTOMASK_PF0_MASK |
+ I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK;
+
+ /* If support multi-driver, PF will use INT0. */
+ if (!pf->support_multi_driver)
+ val |= I40E_GLINT_CTL_DIS_AUTOMASK_N_MASK;
+
+ I40E_WRITE_REG(hw, I40E_GLINT_CTL, val);
+}
+
#define I40E_FLOW_CONTROL_ETHERTYPE 0x8808
/*
@@ -1077,6 +1094,8 @@ eth_i40e_dev_init(struct rte_eth_dev *dev)
return ret;
}
+ i40e_config_automask(pf);
+
/*
* To work around the NVM issue, initialize registers
* for flexible payload and packet type of QinQ by
@@ -1463,6 +1482,7 @@ __vsi_queues_bind_intr(struct i40e_vsi *vsi, uint16_t msix_vect,
int i;
uint32_t val;
struct i40e_hw *hw = I40E_VSI_TO_HW(vsi);
+ struct i40e_pf *pf = I40E_VSI_TO_PF(vsi);
/* Bind all RX queues to allocated MSIX interrupt */
for (i = 0; i < nb_queue; i++) {
@@ -1481,7 +1501,8 @@ __vsi_queues_bind_intr(struct i40e_vsi *vsi, uint16_t msix_vect,
/* Write first RX queue to Link list register as the head element */
if (vsi->type != I40E_VSI_SRIOV) {
uint16_t interval =
- i40e_calc_itr_interval(RTE_LIBRTE_I40E_ITR_INTERVAL);
+ i40e_calc_itr_interval(RTE_LIBRTE_I40E_ITR_INTERVAL,
+ pf->support_multi_driver);
if (msix_vect == I40E_MISC_VEC_ID) {
I40E_WRITE_REG(hw, I40E_PFINT_LNKLST0,
@@ -1539,7 +1560,6 @@ i40e_vsi_queues_bind_intr(struct i40e_vsi *vsi)
uint16_t nb_msix = RTE_MIN(vsi->nb_msix, intr_handle->nb_efd);
uint16_t queue_idx = 0;
int record = 0;
- uint32_t val;
int i;
for (i = 0; i < vsi->nb_qps; i++) {
@@ -1547,13 +1567,6 @@ i40e_vsi_queues_bind_intr(struct i40e_vsi *vsi)
I40E_WRITE_REG(hw, I40E_QINT_RQCTL(vsi->base_queue + i), 0);
}
- /* INTENA flag is not auto-cleared for interrupt */
- val = I40E_READ_REG(hw, I40E_GLINT_CTL);
- val |= I40E_GLINT_CTL_DIS_AUTOMASK_PF0_MASK |
- I40E_GLINT_CTL_DIS_AUTOMASK_N_MASK |
- I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK;
- I40E_WRITE_REG(hw, I40E_GLINT_CTL, val);
-
/* VF bind interrupt */
if (vsi->type == I40E_VSI_SRIOV) {
__vsi_queues_bind_intr(vsi, msix_vect,
@@ -1606,27 +1619,22 @@ i40e_vsi_enable_queues_intr(struct i40e_vsi *vsi)
struct rte_eth_dev *dev = vsi->adapter->eth_dev;
struct rte_intr_handle *intr_handle = &dev->pci_dev->intr_handle;
struct i40e_hw *hw = I40E_VSI_TO_HW(vsi);
- uint16_t interval = i40e_calc_itr_interval(\
- RTE_LIBRTE_I40E_ITR_INTERVAL);
+ struct i40e_pf *pf = I40E_VSI_TO_PF(vsi);
uint16_t msix_intr, i;
- if (rte_intr_allow_others(intr_handle))
+ if (rte_intr_allow_others(intr_handle) && !pf->support_multi_driver)
for (i = 0; i < vsi->nb_msix; i++) {
msix_intr = vsi->msix_intr + i;
I40E_WRITE_REG(hw, I40E_PFINT_DYN_CTLN(msix_intr - 1),
- I40E_PFINT_DYN_CTLN_INTENA_MASK |
- I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
- (0 << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT) |
- (interval <<
- I40E_PFINT_DYN_CTLN_INTERVAL_SHIFT));
+ I40E_PFINT_DYN_CTLN_INTENA_MASK |
+ I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
+ I40E_PFINT_DYN_CTLN_ITR_INDX_MASK);
}
else
I40E_WRITE_REG(hw, I40E_PFINT_DYN_CTL0,
I40E_PFINT_DYN_CTL0_INTENA_MASK |
I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
- (0 << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT) |
- (interval <<
- I40E_PFINT_DYN_CTL0_INTERVAL_SHIFT));
+ I40E_PFINT_DYN_CTL0_ITR_INDX_MASK);
I40E_WRITE_FLUSH(hw);
}
@@ -1637,16 +1645,18 @@ i40e_vsi_disable_queues_intr(struct i40e_vsi *vsi)
struct rte_eth_dev *dev = vsi->adapter->eth_dev;
struct rte_intr_handle *intr_handle = &dev->pci_dev->intr_handle;
struct i40e_hw *hw = I40E_VSI_TO_HW(vsi);
+ struct i40e_pf *pf = I40E_VSI_TO_PF(vsi);
uint16_t msix_intr, i;
- if (rte_intr_allow_others(intr_handle))
+ if (rte_intr_allow_others(intr_handle) && !pf->support_multi_driver)
for (i = 0; i < vsi->nb_msix; i++) {
msix_intr = vsi->msix_intr + i;
I40E_WRITE_REG(hw, I40E_PFINT_DYN_CTLN(msix_intr - 1),
- 0);
+ I40E_PFINT_DYN_CTLN_ITR_INDX_MASK);
}
else
- I40E_WRITE_REG(hw, I40E_PFINT_DYN_CTL0, 0);
+ I40E_WRITE_REG(hw, I40E_PFINT_DYN_CTL0,
+ I40E_PFINT_DYN_CTL0_ITR_INDX_MASK);
I40E_WRITE_FLUSH(hw);
}
@@ -4618,16 +4628,28 @@ i40e_vsi_setup(struct i40e_pf *pf,
/* VF has MSIX interrupt in VF range, don't allocate here */
if (type == I40E_VSI_MAIN) {
- ret = i40e_res_pool_alloc(&pf->msix_pool,
- RTE_MIN(vsi->nb_qps,
- RTE_MAX_RXTX_INTR_VEC_ID));
- if (ret < 0) {
- PMD_DRV_LOG(ERR, "VSI MAIN %d get heap failed %d",
- vsi->seid, ret);
- goto fail_queue_alloc;
+ if (pf->support_multi_driver) {
+ /* If support multi-driver, need to use INT0 instead of
+ * allocating from msix pool. The Msix pool is init from
+ * INT1, so it's OK just set msix_intr to 0 and nb_msix
+ * to 1 without calling i40e_res_pool_alloc.
+ */
+ vsi->msix_intr = 0;
+ vsi->nb_msix = 1;
+ } else {
+ ret = i40e_res_pool_alloc(&pf->msix_pool,
+ RTE_MIN(vsi->nb_qps,
+ RTE_MAX_RXTX_INTR_VEC_ID));
+ if (ret < 0) {
+ PMD_DRV_LOG(ERR,
+ "VSI MAIN %d get heap failed %d",
+ vsi->seid, ret);
+ goto fail_queue_alloc;
+ }
+ vsi->msix_intr = ret;
+ vsi->nb_msix = RTE_MIN(vsi->nb_qps,
+ RTE_MAX_RXTX_INTR_VEC_ID);
}
- vsi->msix_intr = ret;
- vsi->nb_msix = RTE_MIN(vsi->nb_qps, RTE_MAX_RXTX_INTR_VEC_ID);
} else if (type != I40E_VSI_SRIOV) {
ret = i40e_res_pool_alloc(&pf->msix_pool, 1);
if (ret < 0) {
@@ -5540,7 +5562,8 @@ void
i40e_pf_disable_irq0(struct i40e_hw *hw)
{
/* Disable all interrupt types */
- I40E_WRITE_REG(hw, I40E_PFINT_DYN_CTL0, 0);
+ I40E_WRITE_REG(hw, I40E_PFINT_DYN_CTL0,
+ I40E_PFINT_DYN_CTL0_ITR_INDX_MASK);
I40E_WRITE_FLUSH(hw);
}
@@ -9861,10 +9884,12 @@ i40e_dev_get_dcb_info(struct rte_eth_dev *dev,
static int
i40e_dev_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id)
{
+ struct i40e_pf *pf = I40E_DEV_PRIVATE_TO_PF(dev->data->dev_private);
struct rte_intr_handle *intr_handle = &dev->pci_dev->intr_handle;
struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
uint16_t interval =
- i40e_calc_itr_interval(RTE_LIBRTE_I40E_ITR_INTERVAL);
+ i40e_calc_itr_interval(RTE_LIBRTE_I40E_ITR_INTERVAL,
+ pf->support_multi_driver);
uint16_t msix_intr;
msix_intr = intr_handle->intr_vec[queue_id];
@@ -720,10 +720,14 @@ i40e_align_floor(int n)
}
static inline uint16_t
-i40e_calc_itr_interval(int16_t interval)
+i40e_calc_itr_interval(int16_t interval, bool is_multi_drv)
{
- if (interval < 0 || interval > I40E_QUEUE_ITR_INTERVAL_MAX)
- interval = I40E_QUEUE_ITR_INTERVAL_DEFAULT;
+ if (interval < 0 || interval > I40E_QUEUE_ITR_INTERVAL_MAX) {
+ if (is_multi_drv)
+ interval = I40E_QUEUE_ITR_INTERVAL_MAX;
+ else
+ interval = I40E_QUEUE_ITR_INTERVAL_DEFAULT;
+ }
/* Convert to hardware count, as writing each 1 represents 2 us */
return interval / 2;
@@ -1246,7 +1246,7 @@ i40evf_init_vf(struct rte_eth_dev *dev)
struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
struct ether_addr *p_mac_addr;
uint16_t interval =
- i40e_calc_itr_interval(I40E_QUEUE_ITR_INTERVAL_MAX);
+ i40e_calc_itr_interval(I40E_QUEUE_ITR_INTERVAL_MAX, 0);
vf->adapter = I40E_DEV_PRIVATE_TO_ADAPTER(dev->data->dev_private);
vf->dev_data = dev->data;
@@ -1986,7 +1986,7 @@ i40evf_dev_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id)
struct rte_intr_handle *intr_handle = &dev->pci_dev->intr_handle;
struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
uint16_t interval =
- i40e_calc_itr_interval(RTE_LIBRTE_I40E_ITR_INTERVAL);
+ i40e_calc_itr_interval(RTE_LIBRTE_I40E_ITR_INTERVAL, 0);
uint16_t msix_intr;
msix_intr = intr_handle->intr_vec[queue_id];