[dpdk-dev] [PATCH 18/37] bus/dpaa: add shared MAC support

[Hemant Agrawal <hemant.agrawal@nxp.com>]

From: Radu Bulie <radu-andrei.bulie@nxp.com>

A shared MAC interface is an interface which can be used
by both kernel and userspace based on classification configuration
It is defined in dts with the compatible string "fsl,dpa-ethernet-shared"
which bpool will be seeded by the dpdk partition and configured
as a netdev by the dpaa Linux eth driver.
User space buffers from the bpool will be kmapped by the kernel.

Signed-off-by: Radu Bulie <radu-andrei.bulie@nxp.com>
Signed-off-by: Jun Yang <jun.yang@nxp.com>
Signed-off-by: Nipun Gupta <nipun.gupta@nxp.com>
---
 drivers/bus/dpaa/base/fman/fman.c | 27 ++++++++++++++++++++++-----
 drivers/bus/dpaa/include/fman.h   |  2 ++
 drivers/net/dpaa/dpaa_ethdev.c    | 31 +++++++++++++++++--------------
 drivers/net/dpaa/dpaa_flow.c      | 18 ++++++++++++++----
 4 files changed, 55 insertions(+), 23 deletions(-)

diff --git a/drivers/bus/dpaa/base/fman/fman.c b/drivers/bus/dpaa/base/fman/fman.c
index 33be9e5d7..3ae29bf06 100644
--- a/drivers/bus/dpaa/base/fman/fman.c
+++ b/drivers/bus/dpaa/base/fman/fman.c
@@ -167,13 +167,21 @@ fman_if_init(const struct device_node *dpa_node)
 	const char *mname, *fname;
 	const char *dname = dpa_node->full_name;
 	size_t lenp;
-	int _errno;
+	int _errno, is_shared = 0;
 	const char *char_prop;
 	uint32_t na;
 
 	if (of_device_is_available(dpa_node) == false)
 		return 0;
 
+	if (!of_device_is_compatible(dpa_node, "fsl,dpa-ethernet-init") &&
+		!of_device_is_compatible(dpa_node, "fsl,dpa-ethernet-shared")) {
+		return 0;
+	}
+
+	if (of_device_is_compatible(dpa_node, "fsl,dpa-ethernet-shared"))
+		is_shared = 1;
+
 	rprop = "fsl,qman-frame-queues-rx";
 	mprop = "fsl,fman-mac";
 
@@ -387,7 +395,7 @@ fman_if_init(const struct device_node *dpa_node)
 		goto err;
 	}
 
-	assert(lenp == (4 * sizeof(phandle)));
+	assert(lenp >= (4 * sizeof(phandle)));
 
 	na = of_n_addr_cells(mac_node);
 	/* Get rid of endianness (issues). Convert to host byte order */
@@ -408,7 +416,7 @@ fman_if_init(const struct device_node *dpa_node)
 		goto err;
 	}
 
-	assert(lenp == (4 * sizeof(phandle)));
+	assert(lenp >= (4 * sizeof(phandle)));
 	/*TODO: Fix for other cases also */
 	na = of_n_addr_cells(mac_node);
 	/* Get rid of endianness (issues). Convert to host byte order */
@@ -508,6 +516,9 @@ fman_if_init(const struct device_node *dpa_node)
 		pools_phandle++;
 	}
 
+	if (is_shared)
+		__if->__if.is_shared_mac = 1;
+
 	/* Parsing of the network interface is complete, add it to the list */
 	DPAA_BUS_LOG(DEBUG, "Found %s, Tx Channel = %x, FMAN = %x,"
 		    "Port ID = %x",
@@ -524,7 +535,7 @@ fman_if_init(const struct device_node *dpa_node)
 int
 fman_init(void)
 {
-	const struct device_node *dpa_node;
+	const struct device_node *dpa_node, *parent_node;
 	int _errno;
 
 	/* If multiple dependencies try to initialise the Fman driver, don't
@@ -539,7 +550,13 @@ fman_init(void)
 		return fman_ccsr_map_fd;
 	}
 
-	for_each_compatible_node(dpa_node, NULL, "fsl,dpa-ethernet-init") {
+	parent_node = of_find_compatible_node(NULL, NULL, "fsl,dpaa");
+	if (!parent_node) {
+		DPAA_BUS_LOG(ERR, "Unable to find fsl,dpaa node");
+		return -ENODEV;
+	}
+
+	for_each_child_node(parent_node, dpa_node) {
 		_errno = fman_if_init(dpa_node);
 		if (_errno) {
 			FMAN_ERR(_errno, "if_init(%s)\n", dpa_node->full_name);
diff --git a/drivers/bus/dpaa/include/fman.h b/drivers/bus/dpaa/include/fman.h
index 7a0a7d405..cb7f18ca2 100644
--- a/drivers/bus/dpaa/include/fman.h
+++ b/drivers/bus/dpaa/include/fman.h
@@ -320,6 +320,8 @@ struct fman_if {
 	struct rte_ether_addr mac_addr;
 	/* The Qman channel to schedule Tx FQs to */
 	u16 tx_channel_id;
+
+	uint8_t is_shared_mac;
 	/* The hard-coded FQIDs for this interface. Note: this doesn't cover
 	 * the PCD nor the "Rx default" FQIDs, which are configured via FMC
 	 * and its XML-based configuration.
diff --git a/drivers/net/dpaa/dpaa_ethdev.c b/drivers/net/dpaa/dpaa_ethdev.c
index 1dbe2abf4..b004b7060 100644
--- a/drivers/net/dpaa/dpaa_ethdev.c
+++ b/drivers/net/dpaa/dpaa_ethdev.c
@@ -353,7 +353,8 @@ static void dpaa_eth_dev_stop(struct rte_eth_dev *dev)
 
 	PMD_INIT_FUNC_TRACE();
 
-	fman_if_disable_rx(fif);
+	if (!fif->is_shared_mac)
+		fman_if_disable_rx(fif);
 	dev->tx_pkt_burst = dpaa_eth_tx_drop_all;
 }
 
@@ -1683,19 +1684,21 @@ dpaa_dev_init(struct rte_eth_dev *eth_dev)
 		fman_intf->mac_addr.addr_bytes[4],
 		fman_intf->mac_addr.addr_bytes[5]);
 
-
-	/* Disable RX mode */
-	fman_if_discard_rx_errors(fman_intf);
-	fman_if_disable_rx(fman_intf);
-	/* Disable promiscuous mode */
-	fman_if_promiscuous_disable(fman_intf);
-	/* Disable multicast */
-	fman_if_reset_mcast_filter_table(fman_intf);
-	/* Reset interface statistics */
-	fman_if_stats_reset(fman_intf);
-	/* Disable SG by default */
-	fman_if_set_sg(fman_intf, 0);
-	fman_if_set_maxfrm(fman_intf, RTE_ETHER_MAX_LEN + VLAN_TAG_SIZE);
+	if (!fman_intf->is_shared_mac) {
+		/* Disable RX mode */
+		fman_if_discard_rx_errors(fman_intf);
+		fman_if_disable_rx(fman_intf);
+		/* Disable promiscuous mode */
+		fman_if_promiscuous_disable(fman_intf);
+		/* Disable multicast */
+		fman_if_reset_mcast_filter_table(fman_intf);
+		/* Reset interface statistics */
+		fman_if_stats_reset(fman_intf);
+		/* Disable SG by default */
+		fman_if_set_sg(fman_intf, 0);
+		fman_if_set_maxfrm(fman_intf,
+				   RTE_ETHER_MAX_LEN + VLAN_TAG_SIZE);
+	}
 
 	return 0;
 
diff --git a/drivers/net/dpaa/dpaa_flow.c b/drivers/net/dpaa/dpaa_flow.c
index c7a4f87b1..42970a788 100644
--- a/drivers/net/dpaa/dpaa_flow.c
+++ b/drivers/net/dpaa/dpaa_flow.c
@@ -740,6 +740,14 @@ int dpaa_fm_deconfig(struct dpaa_if *dpaa_intf,
 	}
 	dpaa_intf->netenv_handle = NULL;
 
+	if (fif && fif->is_shared_mac) {
+		ret = FM_PORT_Enable(dpaa_intf->port_handle);
+		if (ret != E_OK) {
+			DPAA_PMD_ERR("shared mac re-enable failed");
+			return ret;
+		}
+	}
+
 	/* FM PORT Close */
 	FM_PORT_Close(dpaa_intf->port_handle);
 	dpaa_intf->port_handle = NULL;
@@ -789,10 +797,12 @@ int dpaa_fm_config(struct rte_eth_dev *dev, uint64_t req_dist_set)
 		}
 	}
 	/* Set default netenv and scheme */
-	ret = set_default_scheme(dpaa_intf);
-	if (ret) {
-		DPAA_PMD_ERR("Set PCD NetEnv and Scheme: Failed");
-		goto unset_pcd_netenv_scheme1;
+	if (!fif->is_shared_mac) {
+		ret = set_default_scheme(dpaa_intf);
+		if (ret) {
+			DPAA_PMD_ERR("Set PCD NetEnv and Scheme: Failed");
+			goto unset_pcd_netenv_scheme1;
+		}
 	}
 
 	/* Set Port PCD */
-- 
2.17.1