[v16,08/11] net/ixgbe: implement power management API
diff mbox series

Message ID 990a122b9b009f4d3fa376a008e088e35eb3c813.1610473000.git.anatoly.burakov@intel.com
State Superseded
Delegated to: Thomas Monjalon
Headers show
Series
  • Add PMD power management
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Checks

Context Check Description
ci/checkpatch success coding style OK

Commit Message

Anatoly Burakov Jan. 12, 2021, 5:37 p.m. UTC
From: Liang Ma <liang.j.ma@intel.com>

Implement support for the power management API by implementing a
`get_monitor_addr` function that will return an address of an RX ring's
status bit.

Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
Signed-off-by: Liang Ma <liang.j.ma@intel.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
---
 drivers/net/ixgbe/ixgbe_ethdev.c |  1 +
 drivers/net/ixgbe/ixgbe_rxtx.c   | 25 +++++++++++++++++++++++++
 drivers/net/ixgbe/ixgbe_rxtx.h   |  1 +
 3 files changed, 27 insertions(+)

Patch
diff mbox series

diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
index d7a1806ab8..97acf35d24 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/ixgbe/ixgbe_ethdev.c
@@ -560,6 +560,7 @@  static const struct eth_dev_ops ixgbe_eth_dev_ops = {
 	.udp_tunnel_port_del  = ixgbe_dev_udp_tunnel_port_del,
 	.tm_ops_get           = ixgbe_tm_ops_get,
 	.tx_done_cleanup      = ixgbe_dev_tx_done_cleanup,
+	.get_monitor_addr     = ixgbe_get_monitor_addr,
 };
 
 /*
diff --git a/drivers/net/ixgbe/ixgbe_rxtx.c b/drivers/net/ixgbe/ixgbe_rxtx.c
index 7bb8460359..cc8f70e6dd 100644
--- a/drivers/net/ixgbe/ixgbe_rxtx.c
+++ b/drivers/net/ixgbe/ixgbe_rxtx.c
@@ -1369,6 +1369,31 @@  const uint32_t
 		RTE_PTYPE_INNER_L3_IPV4_EXT | RTE_PTYPE_INNER_L4_UDP,
 };
 
+int
+ixgbe_get_monitor_addr(void *rx_queue, struct rte_power_monitor_cond *pmc)
+{
+	volatile union ixgbe_adv_rx_desc *rxdp;
+	struct ixgbe_rx_queue *rxq = rx_queue;
+	uint16_t desc;
+
+	desc = rxq->rx_tail;
+	rxdp = &rxq->rx_ring[desc];
+	/* watch for changes in status bit */
+	pmc->addr = &rxdp->wb.upper.status_error;
+
+	/*
+	 * we expect the DD bit to be set to 1 if this descriptor was already
+	 * written to.
+	 */
+	pmc->val = rte_cpu_to_le_32(IXGBE_RXDADV_STAT_DD);
+	pmc->mask = rte_cpu_to_le_32(IXGBE_RXDADV_STAT_DD);
+
+	/* the registers are 32-bit */
+	pmc->data_sz = sizeof(uint32_t);
+
+	return 0;
+}
+
 /* @note: fix ixgbe_dev_supported_ptypes_get() if any change here. */
 static inline uint32_t
 ixgbe_rxd_pkt_info_to_pkt_type(uint32_t pkt_info, uint16_t ptype_mask)
diff --git a/drivers/net/ixgbe/ixgbe_rxtx.h b/drivers/net/ixgbe/ixgbe_rxtx.h
index 6d2f7c9da3..8a25e98df6 100644
--- a/drivers/net/ixgbe/ixgbe_rxtx.h
+++ b/drivers/net/ixgbe/ixgbe_rxtx.h
@@ -299,5 +299,6 @@  uint64_t ixgbe_get_tx_port_offloads(struct rte_eth_dev *dev);
 uint64_t ixgbe_get_rx_queue_offloads(struct rte_eth_dev *dev);
 uint64_t ixgbe_get_rx_port_offloads(struct rte_eth_dev *dev);
 uint64_t ixgbe_get_tx_queue_offloads(struct rte_eth_dev *dev);
+int ixgbe_get_monitor_addr(void *rx_queue, struct rte_power_monitor_cond *pmc);
 
 #endif /* _IXGBE_RXTX_H_ */