From: Liang Ma <liang.j.ma@intel.com>
Date: Thu, 14 Jan 2021 14:46:12 +0000 (+0000)
Subject: net/ice: implement power management API
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=dc8ac7980c5982e512c6723b3409fa69ed106f20;p=dpdk.git

net/ice: implement power management API

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: Liang Ma <liang.j.ma@intel.com>
Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
---

diff --git a/drivers/net/ice/ice_ethdev.c b/drivers/net/ice/ice_ethdev.c
index e2799a8eb2..7cee541112 100644
--- a/drivers/net/ice/ice_ethdev.c
+++ b/drivers/net/ice/ice_ethdev.c
@@ -216,6 +216,7 @@ static const struct eth_dev_ops ice_eth_dev_ops = {
 	.udp_tunnel_port_add          = ice_dev_udp_tunnel_port_add,
 	.udp_tunnel_port_del          = ice_dev_udp_tunnel_port_del,
 	.tx_done_cleanup              = ice_tx_done_cleanup,
+	.get_monitor_addr             = ice_get_monitor_addr,
 };
 
 /* store statistics names and its offset in stats structure */
diff --git a/drivers/net/ice/ice_rxtx.c b/drivers/net/ice/ice_rxtx.c
index d052bd0f1b..066651dc48 100644
--- a/drivers/net/ice/ice_rxtx.c
+++ b/drivers/net/ice/ice_rxtx.c
@@ -26,6 +26,32 @@ uint64_t rte_net_ice_dynflag_proto_xtr_ipv6_flow_mask;
 uint64_t rte_net_ice_dynflag_proto_xtr_tcp_mask;
 uint64_t rte_net_ice_dynflag_proto_xtr_ip_offset_mask;
 
+int
+ice_get_monitor_addr(void *rx_queue, struct rte_power_monitor_cond *pmc)
+{
+	volatile union ice_rx_flex_desc *rxdp;
+	struct ice_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.status_error0;
+
+	/*
+	 * we expect the DD bit to be set to 1 if this descriptor was already
+	 * written to.
+	 */
+	pmc->val = rte_cpu_to_le_16(1 << ICE_RX_FLEX_DESC_STATUS0_DD_S);
+	pmc->mask = rte_cpu_to_le_16(1 << ICE_RX_FLEX_DESC_STATUS0_DD_S);
+
+	/* register is 16-bit */
+	pmc->data_sz = sizeof(uint16_t);
+
+	return 0;
+}
+
+
 static inline uint8_t
 ice_proto_xtr_type_to_rxdid(uint8_t xtr_type)
 {
diff --git a/drivers/net/ice/ice_rxtx.h b/drivers/net/ice/ice_rxtx.h
index adfae016a9..99096e4c21 100644
--- a/drivers/net/ice/ice_rxtx.h
+++ b/drivers/net/ice/ice_rxtx.h
@@ -263,6 +263,7 @@ uint16_t ice_xmit_pkts_vec_avx512(void *tx_queue, struct rte_mbuf **tx_pkts,
 				  uint16_t nb_pkts);
 int ice_fdir_programming(struct ice_pf *pf, struct ice_fltr_desc *fdir_desc);
 int ice_tx_done_cleanup(void *txq, uint32_t free_cnt);
+int ice_get_monitor_addr(void *rx_queue, struct rte_power_monitor_cond *pmc);
 
 #define FDIR_PARSING_ENABLE_PER_QUEUE(ad, on) do { \
 	int i; \