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From: Liang Ma <liang.j.ma@intel.com>
To: dev@dpdk.org
Cc: david.hunt@intel.com, stephen@networkplumber.org,
konstantin.ananyev@intel.com, Liang Ma <liang.j.ma@intel.com>,
Anatoly Burakov <anatoly.burakov@intel.com>
Date: Fri, 2 Oct 2020 15:11:56 +0100
Message-Id: <1601647919-25312-7-git-send-email-liang.j.ma@intel.com>
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<1601647919-25312-1-git-send-email-liang.j.ma@intel.com>
Subject: [dpdk-dev] [PATCH v4 07/10] net/ice: implement power management API
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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: Liang Ma <liang.j.ma@intel.com>
Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
---
drivers/net/ice/ice_ethdev.c | 1 +
drivers/net/ice/ice_rxtx.c | 23 +++++++++++++++++++++++
drivers/net/ice/ice_rxtx.h | 2 ++
3 files changed, 26 insertions(+)
diff --git a/drivers/net/ice/ice_ethdev.c b/drivers/net/ice/ice_ethdev.c
index d8ce09d28f..260de5dfd7 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_wake_addr = ice_get_wake_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 93a0ac6918..9e55eca942 100644
--- a/drivers/net/ice/ice_rxtx.c
+++ b/drivers/net/ice/ice_rxtx.c
@@ -25,6 +25,29 @@ 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_wake_addr(void *rx_queue, volatile void **tail_desc_addr,
+ uint64_t *expected, uint64_t *mask)
+{
+ 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 */
+ *tail_desc_addr = &rxdp->wb.status_error0;
+
+ /*
+ * we expect the DD bit to be set to 1 if this descriptor was already
+ * written to.
+ */
+ *expected = rte_cpu_to_le_16(1 << ICE_RX_FLEX_DESC_STATUS0_DD_S);
+ *mask = rte_cpu_to_le_16(1 << ICE_RX_FLEX_DESC_STATUS0_DD_S);
+
+ 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 1c23c7541e..c729e474c9 100644
--- a/drivers/net/ice/ice_rxtx.h
+++ b/drivers/net/ice/ice_rxtx.h
@@ -250,6 +250,8 @@ uint16_t ice_xmit_pkts_vec_avx2(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_wake_addr(void *rx_queue, volatile void **tail_desc_addr,
+ uint64_t *expected, uint64_t *mask);
#define FDIR_PARSING_ENABLE_PER_QUEUE(ad, on) do { \
int i; \
--
2.17.1