Register to handle device interrupt.
Signed-off-by: Jiawen Wu <jiawe...@trustnetic.com>
---
doc/guides/nics/features/ngbe.ini | 3 +
doc/guides/nics/ngbe.rst | 6 +
drivers/net/ngbe/base/ngbe_dummy.h | 6 +
drivers/net/ngbe/base/ngbe_type.h | 11 +
drivers/net/ngbe/ngbe_ethdev.c | 369 ++++++++++++++++++++++++++++-
drivers/net/ngbe/ngbe_ethdev.h | 34 +++
6 files changed, 428 insertions(+), 1 deletion(-)
diff --git a/doc/guides/nics/features/ngbe.ini
b/doc/guides/nics/features/ngbe.ini
index 977286ac04..291a542a42 100644
--- a/doc/guides/nics/features/ngbe.ini
+++ b/doc/guides/nics/features/ngbe.ini
@@ -4,6 +4,9 @@
; Refer to default.ini for the full list of available PMD features.
;
[Features]
+Speed capabilities = Y
+Link status = Y
+Link status event = Y
Multiprocess aware = Y
Linux = Y
ARMv8 = Y
diff --git a/doc/guides/nics/ngbe.rst b/doc/guides/nics/ngbe.rst
index d661b6323d..fc2e52392b 100644
--- a/doc/guides/nics/ngbe.rst
+++ b/doc/guides/nics/ngbe.rst
@@ -8,6 +8,12 @@ The NGBE PMD (librte_pmd_ngbe) provides poll mode driver
support
for Wangxun 1 Gigabit Ethernet NICs.
+Features
+--------
+
+- Link state information
+
+
Prerequisites
-------------
diff --git a/drivers/net/ngbe/base/ngbe_dummy.h
b/drivers/net/ngbe/base/ngbe_dummy.h
index e5b5bbb5f7..634e9a69c1 100644
--- a/drivers/net/ngbe/base/ngbe_dummy.h
+++ b/drivers/net/ngbe/base/ngbe_dummy.h
@@ -64,6 +64,11 @@ static inline void ngbe_mac_release_swfw_sync_dummy(struct
ngbe_hw *TUP0,
u32 TUP1)
{
}
+static inline s32 ngbe_mac_check_link_dummy(struct ngbe_hw *TUP0, u32 *TUP1,
+ bool *TUP3, bool TUP4)
+{
+ return NGBE_ERR_OPS_DUMMY;
+}
static inline s32 ngbe_mac_set_rar_dummy(struct ngbe_hw *TUP0, u32 TUP1,
u8 *TUP2, u32 TUP3, u32 TUP4)
{
@@ -135,6 +140,7 @@ static inline void ngbe_init_ops_dummy(struct ngbe_hw *hw)
hw->mac.get_mac_addr = ngbe_mac_get_mac_addr_dummy;
hw->mac.acquire_swfw_sync = ngbe_mac_acquire_swfw_sync_dummy;
hw->mac.release_swfw_sync = ngbe_mac_release_swfw_sync_dummy;
+ hw->mac.check_link = ngbe_mac_check_link_dummy;
hw->mac.set_rar = ngbe_mac_set_rar_dummy;
hw->mac.clear_rar = ngbe_mac_clear_rar_dummy;
hw->mac.set_vmdq = ngbe_mac_set_vmdq_dummy;
diff --git a/drivers/net/ngbe/base/ngbe_type.h
b/drivers/net/ngbe/base/ngbe_type.h
index dbf0654db3..554c57c845 100644
--- a/drivers/net/ngbe/base/ngbe_type.h
+++ b/drivers/net/ngbe/base/ngbe_type.h
@@ -97,6 +97,8 @@ struct ngbe_mac_info {
s32 (*acquire_swfw_sync)(struct ngbe_hw *hw, u32 mask);
void (*release_swfw_sync)(struct ngbe_hw *hw, u32 mask);
+ s32 (*check_link)(struct ngbe_hw *hw, u32 *speed,
+ bool *link_up, bool link_up_wait_to_complete);
/* RAR */
s32 (*set_rar)(struct ngbe_hw *hw, u32 index, u8 *addr, u32 vmdq,
u32 enable_addr);
@@ -117,6 +119,7 @@ struct ngbe_mac_info {
u32 num_rar_entries;
u32 max_tx_queues;
u32 max_rx_queues;
+ bool get_link_status;
struct ngbe_thermal_sensor_data thermal_sensor_data;
bool set_lben;
};
@@ -142,6 +145,14 @@ struct ngbe_phy_info {
bool reset_disable;
};
+enum ngbe_isb_idx {
+ NGBE_ISB_HEADER,
+ NGBE_ISB_MISC,
+ NGBE_ISB_VEC0,
+ NGBE_ISB_VEC1,
+ NGBE_ISB_MAX
+};
+
struct ngbe_hw {
void IOMEM *hw_addr;
void *back;
diff --git a/drivers/net/ngbe/ngbe_ethdev.c b/drivers/net/ngbe/ngbe_ethdev.c
index 77a5584fbd..1c6e4e2b3e 100644
--- a/drivers/net/ngbe/ngbe_ethdev.c
+++ b/drivers/net/ngbe/ngbe_ethdev.c
@@ -7,12 +7,17 @@
#include <rte_common.h>
#include <ethdev_pci.h>
+#include <rte_alarm.h>
+
#include "ngbe_logs.h"
#include "ngbe.h"
#include "ngbe_ethdev.h"
static int ngbe_dev_close(struct rte_eth_dev *dev);
+static void ngbe_dev_interrupt_handler(void *param);
+static void ngbe_dev_interrupt_delayed_handler(void *param);
+
/*
* The set of PCI devices this driver supports
*/
@@ -32,6 +37,28 @@ static const struct rte_pci_id pci_id_ngbe_map[] = {
{ .vendor_id = 0, /* sentinel */ },
};
+static const struct eth_dev_ops ngbe_eth_dev_ops;
+
+static inline void
+ngbe_enable_intr(struct rte_eth_dev *dev)
+{
+ struct ngbe_interrupt *intr = ngbe_dev_intr(dev);
+ struct ngbe_hw *hw = ngbe_dev_hw(dev);
+
+ wr32(hw, NGBE_IENMISC, intr->mask_misc);
+ wr32(hw, NGBE_IMC(0), intr->mask & BIT_MASK32);
+ ngbe_flush(hw);
+}
+
+static void
+ngbe_disable_intr(struct ngbe_hw *hw)
+{
+ PMD_INIT_FUNC_TRACE();
+
+ wr32(hw, NGBE_IMS(0), NGBE_IMS_MASK);
+ ngbe_flush(hw);
+}
+
/*
* Ensure that all locks are released before first NVM or PHY access
*/
@@ -60,11 +87,15 @@ eth_ngbe_dev_init(struct rte_eth_dev *eth_dev, void
*init_params __rte_unused)
{
struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
struct ngbe_hw *hw = ngbe_dev_hw(eth_dev);
+ struct rte_intr_handle *intr_handle = &pci_dev->intr_handle;
const struct rte_memzone *mz;
+ uint32_t ctrl_ext;
int err;
PMD_INIT_FUNC_TRACE();
+ eth_dev->dev_ops = &ngbe_eth_dev_ops;
+
if (rte_eal_process_type() != RTE_PROC_PRIMARY)
return 0;
@@ -115,6 +146,9 @@ eth_ngbe_dev_init(struct rte_eth_dev *eth_dev, void
*init_params __rte_unused)
return -EIO;
}
+ /* disable interrupt */
+ ngbe_disable_intr(hw);
+
/* Allocate memory for storing MAC addresses */
eth_dev->data->mac_addrs = rte_zmalloc("ngbe", RTE_ETHER_ADDR_LEN *
hw->mac.num_rar_entries, 0);
@@ -141,6 +175,23 @@ eth_ngbe_dev_init(struct rte_eth_dev *eth_dev, void
*init_params __rte_unused)
return -ENOMEM;
}
+ ctrl_ext = rd32(hw, NGBE_PORTCTL);
+ /* let hardware know driver is loaded */
+ ctrl_ext |= NGBE_PORTCTL_DRVLOAD;
+ /* Set PF Reset Done bit so PF/VF Mail Ops can work */
+ ctrl_ext |= NGBE_PORTCTL_RSTDONE;
+ wr32(hw, NGBE_PORTCTL, ctrl_ext);
+ ngbe_flush(hw);
+
+ rte_intr_callback_register(intr_handle,
+ ngbe_dev_interrupt_handler, eth_dev);
+
+ /* enable uio/vfio intr/eventfd mapping */
+ rte_intr_enable(intr_handle);
+
+ /* enable support intr */
+ ngbe_enable_intr(eth_dev);
+
return 0;
}
@@ -180,11 +231,25 @@ static int eth_ngbe_pci_remove(struct rte_pci_device
*pci_dev)
static struct rte_pci_driver rte_ngbe_pmd = {
.id_table = pci_id_ngbe_map,
- .drv_flags = RTE_PCI_DRV_NEED_MAPPING,
+ .drv_flags = RTE_PCI_DRV_NEED_MAPPING |
+ RTE_PCI_DRV_INTR_LSC,
.probe = eth_ngbe_pci_probe,
.remove = eth_ngbe_pci_remove,
};
+static int
+ngbe_dev_configure(struct rte_eth_dev *dev)
+{
+ struct ngbe_interrupt *intr = ngbe_dev_intr(dev);
+
+ PMD_INIT_FUNC_TRACE();
+
+ /* set flag to update link status after init */
+ intr->flags |= NGBE_FLAG_NEED_LINK_UPDATE;
+
+ return 0;
+}
+
/*
* Reset and stop device.
*/
@@ -198,6 +263,308 @@ ngbe_dev_close(struct rte_eth_dev *dev)
return -EINVAL;
}
+static int
+ngbe_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
+{
+ RTE_SET_USED(dev);
+
+ dev_info->speed_capa = ETH_LINK_SPEED_1G | ETH_LINK_SPEED_100M |
+ ETH_LINK_SPEED_10M;
+
+ return 0;
+}
+
+/* return 0 means link status changed, -1 means not changed */
+int
+ngbe_dev_link_update_share(struct rte_eth_dev *dev,
+ int wait_to_complete)
+{
+ struct ngbe_hw *hw = ngbe_dev_hw(dev);
+ struct rte_eth_link link;
+ u32 link_speed = NGBE_LINK_SPEED_UNKNOWN;
+ u32 lan_speed = 0;
+ struct ngbe_interrupt *intr = ngbe_dev_intr(dev);
+ bool link_up;
+ int err;
+ int wait = 1;
+
+ memset(&link, 0, sizeof(link));
+ link.link_status = ETH_LINK_DOWN;
+ link.link_speed = ETH_SPEED_NUM_NONE;
+ link.link_duplex = ETH_LINK_HALF_DUPLEX;
+ link.link_autoneg = !(dev->data->dev_conf.link_speeds &
+ ~ETH_LINK_SPEED_AUTONEG);
+
+ hw->mac.get_link_status = true;
+
+ if (intr->flags & NGBE_FLAG_NEED_LINK_CONFIG)
+ return rte_eth_linkstatus_set(dev, &link);
+
+ /* check if it needs to wait to complete, if lsc interrupt is enabled */
+ if (wait_to_complete == 0 || dev->data->dev_conf.intr_conf.lsc != 0)
+ wait = 0;
+
+ err = hw->mac.check_link(hw, &link_speed, &link_up, wait);
+ if (err != 0) {
+ link.link_speed = ETH_SPEED_NUM_NONE;
+ link.link_duplex = ETH_LINK_FULL_DUPLEX;
+ return rte_eth_linkstatus_set(dev, &link);
+ }
+
+ if (!link_up)
+ return rte_eth_linkstatus_set(dev, &link);
+
+ intr->flags &= ~NGBE_FLAG_NEED_LINK_CONFIG;
+ link.link_status = ETH_LINK_UP;
+ link.link_duplex = ETH_LINK_FULL_DUPLEX;
+
+ switch (link_speed) {
+ default:
+ case NGBE_LINK_SPEED_UNKNOWN:
+ link.link_speed = ETH_SPEED_NUM_NONE;
+ break;
+
+ case NGBE_LINK_SPEED_10M_FULL:
+ link.link_speed = ETH_SPEED_NUM_10M;
+ lan_speed = 0;
+ break;
+
+ case NGBE_LINK_SPEED_100M_FULL:
+ link.link_speed = ETH_SPEED_NUM_100M;
+ lan_speed = 1;
+ break;
+
+ case NGBE_LINK_SPEED_1GB_FULL:
+ link.link_speed = ETH_SPEED_NUM_1G;
+ lan_speed = 2;
+ break;
+ }
+
+ if (hw->is_pf) {
+ wr32m(hw, NGBE_LAN_SPEED, NGBE_LAN_SPEED_MASK, lan_speed);
+ if (link_speed & (NGBE_LINK_SPEED_1GB_FULL |
+ NGBE_LINK_SPEED_100M_FULL |
+ NGBE_LINK_SPEED_10M_FULL)) {
+ wr32m(hw, NGBE_MACTXCFG, NGBE_MACTXCFG_SPEED_MASK,
+ NGBE_MACTXCFG_SPEED_1G | NGBE_MACTXCFG_TE);
+ }
+ }
+
+ return rte_eth_linkstatus_set(dev, &link);
+}
+
+static int
+ngbe_dev_link_update(struct rte_eth_dev *dev, int wait_to_complete)
+{
+ return ngbe_dev_link_update_share(dev, wait_to_complete);
+}
+
+/*
+ * It reads ICR and sets flag for the link_update.
+ *
+ * @param dev
+ * Pointer to struct rte_eth_dev.
+ *
+ * @return
+ * - On success, zero.
+ * - On failure, a negative value.
+ */
+static int
+ngbe_dev_interrupt_get_status(struct rte_eth_dev *dev)
+{
+ uint32_t eicr;
+ struct ngbe_hw *hw = ngbe_dev_hw(dev);
+ struct ngbe_interrupt *intr = ngbe_dev_intr(dev);
+
+ /* clear all cause mask */
+ ngbe_disable_intr(hw);
+
+ /* read-on-clear nic registers here */
+ eicr = ((u32 *)hw->isb_mem)[NGBE_ISB_MISC];
+ PMD_DRV_LOG(DEBUG, "eicr %x", eicr);
+
+ intr->flags = 0;
+
+ /* set flag for async link update */
+ if (eicr & NGBE_ICRMISC_PHY)
+ intr->flags |= NGBE_FLAG_NEED_LINK_UPDATE;
+
+ if (eicr & NGBE_ICRMISC_VFMBX)
+ intr->flags |= NGBE_FLAG_MAILBOX;
+
+ if (eicr & NGBE_ICRMISC_LNKSEC)
+ intr->flags |= NGBE_FLAG_MACSEC;
+
+ if (eicr & NGBE_ICRMISC_GPIO)
+ intr->flags |= NGBE_FLAG_NEED_LINK_UPDATE;
+
+ return 0;
+}
+
+/**
+ * It gets and then prints the link status.
+ *
+ * @param dev
+ * Pointer to struct rte_eth_dev.
+ *
+ * @return
+ * - On success, zero.
+ * - On failure, a negative value.
+ */
+static void
+ngbe_dev_link_status_print(struct rte_eth_dev *dev)
+{
+ struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
+ struct rte_eth_link link;
+
+ rte_eth_linkstatus_get(dev, &link);
+
+ if (link.link_status == ETH_LINK_UP) {
+ PMD_INIT_LOG(INFO, "Port %d: Link Up - speed %u Mbps - %s",
+ (int)(dev->data->port_id),
+ (unsigned int)link.link_speed,
+ link.link_duplex == ETH_LINK_FULL_DUPLEX ?
+ "full-duplex" : "half-duplex");
+ } else {
+ PMD_INIT_LOG(INFO, " Port %d: Link Down",
+ (int)(dev->data->port_id));
+ }
+ PMD_INIT_LOG(DEBUG, "PCI Address: " PCI_PRI_FMT,
+ pci_dev->addr.domain,
+ pci_dev->addr.bus,
+ pci_dev->addr.devid,
+ pci_dev->addr.function);
+}
+
+/*
+ * It executes link_update after knowing an interrupt occurred.
+ *
+ * @param dev
+ * Pointer to struct rte_eth_dev.
+ *
+ * @return
+ * - On success, zero.
+ * - On failure, a negative value.
+ */
+static int
+ngbe_dev_interrupt_action(struct rte_eth_dev *dev)
+{
+ struct ngbe_interrupt *intr = ngbe_dev_intr(dev);
+ int64_t timeout;
+
+ PMD_DRV_LOG(DEBUG, "intr action type %d", intr->flags);
+
+ if (intr->flags & NGBE_FLAG_NEED_LINK_UPDATE) {
+ struct rte_eth_link link;
+
+ /*get the link status before link update, for predicting later*/
+ rte_eth_linkstatus_get(dev, &link);
+
+ ngbe_dev_link_update(dev, 0);
+
+ /* likely to up */
+ if (link.link_status != ETH_LINK_UP)
+ /* handle it 1 sec later, wait it being stable */
+ timeout = NGBE_LINK_UP_CHECK_TIMEOUT;
+ /* likely to down */
+ else
+ /* handle it 4 sec later, wait it being stable */
+ timeout = NGBE_LINK_DOWN_CHECK_TIMEOUT;
+
+ ngbe_dev_link_status_print(dev);
+ if (rte_eal_alarm_set(timeout * 1000,
+ ngbe_dev_interrupt_delayed_handler,
+ (void *)dev) < 0) {
+ PMD_DRV_LOG(ERR, "Error setting alarm");
+ } else {
+ /* remember original mask */
+ intr->mask_misc_orig = intr->mask_misc;
+ /* only disable lsc interrupt */
+ intr->mask_misc &= ~NGBE_ICRMISC_PHY;
+
+ intr->mask_orig = intr->mask;
+ /* only disable all misc interrupts */
+ intr->mask &= ~(1ULL << NGBE_MISC_VEC_ID);
+ }
+ }
+
+ PMD_DRV_LOG(DEBUG, "enable intr immediately");
+ ngbe_enable_intr(dev);
+
+ return 0;
+}
+
+/**
+ * Interrupt handler which shall be registered for alarm callback for delayed
+ * handling specific interrupt to wait for the stable nic state. As the
+ * NIC interrupt state is not stable for ngbe after link is just down,
+ * it needs to wait 4 seconds to get the stable status.
+ *
+ * @param handle
+ * Pointer to interrupt handle.
+ * @param param
+ * The address of parameter (struct rte_eth_dev *) registered before.
+ */
+static void
+ngbe_dev_interrupt_delayed_handler(void *param)
+{
+ struct rte_eth_dev *dev = (struct rte_eth_dev *)param;
+ struct ngbe_interrupt *intr = ngbe_dev_intr(dev);
+ struct ngbe_hw *hw = ngbe_dev_hw(dev);
+ uint32_t eicr;
+
+ ngbe_disable_intr(hw);
+
+ eicr = ((u32 *)hw->isb_mem)[NGBE_ISB_MISC];
+
+ if (intr->flags & NGBE_FLAG_NEED_LINK_UPDATE) {
+ ngbe_dev_link_update(dev, 0);
+ intr->flags &= ~NGBE_FLAG_NEED_LINK_UPDATE;
+ ngbe_dev_link_status_print(dev);
+ rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC,
+ NULL);
+ }
+
+ if (intr->flags & NGBE_FLAG_MACSEC) {
+ rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_MACSEC,
+ NULL);
+ intr->flags &= ~NGBE_FLAG_MACSEC;
+ }
+
+ /* restore original mask */
+ intr->mask_misc = intr->mask_misc_orig;
+ intr->mask_misc_orig = 0;
+ intr->mask = intr->mask_orig;
+ intr->mask_orig = 0;
+
+ PMD_DRV_LOG(DEBUG, "enable intr in delayed handler S[%08x]", eicr);
+ ngbe_enable_intr(dev);
+}
+
+/**
+ * Interrupt handler triggered by NIC for handling
+ * specific interrupt.
+ *
+ * @param handle
+ * Pointer to interrupt handle.
+ * @param param
+ * The address of parameter (struct rte_eth_dev *) registered before.
+ */
+static void
+ngbe_dev_interrupt_handler(void *param)
+{
+ struct rte_eth_dev *dev = (struct rte_eth_dev *)param;
+
+ ngbe_dev_interrupt_get_status(dev);
+ ngbe_dev_interrupt_action(dev);
+}
+
+static const struct eth_dev_ops ngbe_eth_dev_ops = {
+ .dev_configure = ngbe_dev_configure,
+ .dev_infos_get = ngbe_dev_info_get,
+ .link_update = ngbe_dev_link_update,
+};
+
RTE_PMD_REGISTER_PCI(net_ngbe, rte_ngbe_pmd);
RTE_PMD_REGISTER_PCI_TABLE(net_ngbe, pci_id_ngbe_map);
RTE_PMD_REGISTER_KMOD_DEP(net_ngbe, "* igb_uio | uio_pci_generic | vfio-pci");
diff --git a/drivers/net/ngbe/ngbe_ethdev.h b/drivers/net/ngbe/ngbe_ethdev.h
index c8878b8563..cc84132ab1 100644
--- a/drivers/net/ngbe/ngbe_ethdev.h
+++ b/drivers/net/ngbe/ngbe_ethdev.h
@@ -6,11 +6,30 @@
#ifndef _NGBE_ETHDEV_H_
#define _NGBE_ETHDEV_H_
+/* need update link, bit flag */
+#define NGBE_FLAG_NEED_LINK_UPDATE ((uint32_t)(1 << 0))
+#define NGBE_FLAG_MAILBOX ((uint32_t)(1 << 1))
+#define NGBE_FLAG_PHY_INTERRUPT ((uint32_t)(1 << 2))
+#define NGBE_FLAG_MACSEC ((uint32_t)(1 << 3))
+#define NGBE_FLAG_NEED_LINK_CONFIG ((uint32_t)(1 << 4))
+
+#define NGBE_MISC_VEC_ID RTE_INTR_VEC_ZERO_OFFSET
+
+/* structure for interrupt relative data */
+struct ngbe_interrupt {
+ uint32_t flags;
+ uint32_t mask_misc;
+ uint32_t mask_misc_orig; /* save mask during delayed handler */
+ uint64_t mask;
+ uint64_t mask_orig; /* save mask during delayed handler */
+};
+
/*
* Structure to store private data for each driver instance (for each port).
*/
struct ngbe_adapter {
struct ngbe_hw hw;
+ struct ngbe_interrupt intr;
};
static inline struct ngbe_adapter *
@@ -30,6 +49,21 @@ ngbe_dev_hw(struct rte_eth_dev *dev)
return hw;
}
+static inline struct ngbe_interrupt *
+ngbe_dev_intr(struct rte_eth_dev *dev)
+{
+ struct ngbe_adapter *ad = ngbe_dev_adapter(dev);
+ struct ngbe_interrupt *intr = &ad->intr;
+
+ return intr;
+}
+
+int
+ngbe_dev_link_update_share(struct rte_eth_dev *dev,
+ int wait_to_complete);
+
+#define NGBE_LINK_DOWN_CHECK_TIMEOUT 4000 /* ms */
+#define NGBE_LINK_UP_CHECK_TIMEOUT 1000 /* ms */
#define NGBE_VMDQ_NUM_UC_MAC 4096 /* Maximum nb. of UC MAC addr. */
#endif /* _NGBE_ETHDEV_H_ */
--
2.21.0.windows.1
