diff mbox series

[v6,06/10] net/ixgbe: implement power management API

Message ID 5119252a5a5685241f65eb71294b711c53d5db04.1602682206.git.anatoly.burakov@intel.com (mailing list archive)
State Superseded, archived
Delegated to: Thomas Monjalon
Headers show
Series [v6,01/10] eal: add new x86 cpuid support for WAITPKG | expand

Checks

Context Check Description
ci/checkpatch success coding style OK

Commit Message

Burakov, Anatoly Oct. 14, 2020, 1:30 p.m. UTC
From: Liang Ma <liang.j.ma@intel.com>

Implement support for the power management API by implementing a
`get_wake_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   |  2 ++
 3 files changed, 28 insertions(+)

Comments

Wang, Haiyue Oct. 14, 2020, 5:04 p.m. UTC | #1
> -----Original Message-----
> From: Burakov, Anatoly <anatoly.burakov@intel.com>
> Sent: Wednesday, October 14, 2020 21:30
> To: dev@dpdk.org
> Cc: Ma, Liang J <liang.j.ma@intel.com>; Guo, Jia <jia.guo@intel.com>; Wang, Haiyue
> <haiyue.wang@intel.com>; Hunt, David <david.hunt@intel.com>; Ananyev, Konstantin
> <konstantin.ananyev@intel.com>; jerinjacobk@gmail.com; Richardson, Bruce <bruce.richardson@intel.com>;
> thomas@monjalon.net; McDaniel, Timothy <timothy.mcdaniel@intel.com>; Eads, Gage <gage.eads@intel.com>;
> Macnamara, Chris <chris.macnamara@intel.com>
> Subject: [PATCH v6 06/10] net/ixgbe: implement power management API
> 
> From: Liang Ma <liang.j.ma@intel.com>
> 
> Implement support for the power management API by implementing a
> `get_wake_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   |  2 ++
>  3 files changed, 28 insertions(+)

Reviewed-by: Haiyue Wang <haiyue.wang@intel.com>

> --
> 2.17.1
diff mbox series

Patch

diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
index 0b98e210e7..30b3f416d4 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/ixgbe/ixgbe_ethdev.c
@@ -588,6 +588,7 @@  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_wake_addr        = ixgbe_get_wake_addr,
 };
 
 /*
diff --git a/drivers/net/ixgbe/ixgbe_rxtx.c b/drivers/net/ixgbe/ixgbe_rxtx.c
index 29d385c062..b1d656d270 100644
--- a/drivers/net/ixgbe/ixgbe_rxtx.c
+++ b/drivers/net/ixgbe/ixgbe_rxtx.c
@@ -1366,6 +1366,31 @@  const uint32_t
 		RTE_PTYPE_INNER_L3_IPV4_EXT | RTE_PTYPE_INNER_L4_UDP,
 };
 
+int ixgbe_get_wake_addr(void *rx_queue, volatile void **tail_desc_addr,
+		uint64_t *expected, uint64_t *mask, uint8_t *data_sz)
+{
+	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 */
+	*tail_desc_addr = &rxdp->wb.upper.status_error;
+
+	/*
+	 * we expect the DD bit to be set to 1 if this descriptor was already
+	 * written to.
+	 */
+	*expected = rte_cpu_to_le_32(IXGBE_RXDADV_STAT_DD);
+	*mask = rte_cpu_to_le_32(IXGBE_RXDADV_STAT_DD);
+
+	/* the registers are 32-bit */
+	*data_sz = 4;
+
+	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 0b5589ef4d..6b9afec655 100644
--- a/drivers/net/ixgbe/ixgbe_rxtx.h
+++ b/drivers/net/ixgbe/ixgbe_rxtx.h
@@ -299,5 +299,7 @@  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_wake_addr(void *rx_queue, volatile void **tail_desc_addr,
+		uint64_t *expected, uint64_t *mask, uint8_t *data_sz);
 
 #endif /* _IXGBE_RXTX_H_ */