>-----Original Message----- >From: U-Boot <[email protected]> On Behalf Of Claudiu Manoil >Sent: Tuesday, May 5, 2020 11:13 PM >To: [email protected] >Cc: [email protected]; Alexandru Marginean ><[email protected]>; Vladimir Oltean ><[email protected]> >Subject: [PATCH v4 2/6] drivers: net: add a DSA sandbox driver > >From: Alex Marginean <[email protected]> > >The DSA sandbox driver is used for DSA unit testing. It implements a simple 4 >port switch that uses a very simple tag to identify the ports. >The DSA driver comes paired with an Ethernet driver that loops packets back >and can selectively filter traffic on DSA switch ports. > >Signed-off-by: Alex Marginean <[email protected]> >Signed-off-by: Claudiu Manoil <[email protected]> >--- > drivers/net/Kconfig | 8 ++ > drivers/net/Makefile | 1 + > drivers/net/dsa_sandbox.c | 272 >++++++++++++++++++++++++++++++++++++++ > 3 files changed, 281 insertions(+) > create mode 100644 drivers/net/dsa_sandbox.c > >diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig index >863314284b..f982f18d26 100644 >--- a/drivers/net/Kconfig >+++ b/drivers/net/Kconfig >@@ -70,6 +70,14 @@ config MDIO_MUX_SANDBOX > > This driver is used for testing in test/dm/mdio.c > >+config DSA_SANDBOX >+ depends on DM_DSA && SANDBOX >+ default y >+ bool "Sandbox: Mocked DSA driver" >+ help >+ This driver implements a dummy switch and a dummy Ethernet >device used >+ to test DSA class code. >+ > menuconfig NETDEVICES > bool "Network device support" > depends on NET >diff --git a/drivers/net/Makefile b/drivers/net/Makefile index >6e0a68834d..f840b39893 100644 >--- a/drivers/net/Makefile >+++ b/drivers/net/Makefile >@@ -83,3 +83,4 @@ obj-y += mscc_eswitch/ > obj-$(CONFIG_HIGMACV300_ETH) += higmacv300.o > obj-$(CONFIG_MDIO_SANDBOX) += mdio_sandbox.o > obj-$(CONFIG_FSL_ENETC) += fsl_enetc.o fsl_enetc_mdio.o >+obj-$(CONFIG_DSA_SANDBOX) += dsa_sandbox.o >diff --git a/drivers/net/dsa_sandbox.c b/drivers/net/dsa_sandbox.c new file >mode 100644 index 0000000000..7475478668 >--- /dev/null >+++ b/drivers/net/dsa_sandbox.c >@@ -0,0 +1,272 @@ >+// SPDX-License-Identifier: GPL-2.0+ >+/* >+ * Copyright 2019-2020 NXP >+ */ >+ >+#include <net/dsa.h> >+ >+#define DSA_SANDBOX_MAGIC 0x00415344 >+#define DSA_SANDBOX_TAG_LEN sizeof(struct dsa_sandbox_tag) >+/* >+ * This global flag is used to enable DSA just for DSA test so it >+doesn't affect >+ * the existing eth unit test. >+ */ >+int dsa_sandbox_port_mask; >+ >+struct dsa_sandbox_priv { >+ int enabled; >+ int port_enabled; >+}; >+ >+struct dsa_sandbox_tag { >+ u32 magic; >+ u32 port; >+}; >+ >+static int dsa_sandbox_port_enable(struct udevice *dev, int port, >+ struct phy_device *phy) >+{ >+ struct dsa_sandbox_priv *priv = dev->priv; >+ >+ if (!priv->enabled) >+ return -EFAULT; >+ >+ priv->port_enabled |= BIT(port); >+ >+ return 0; >+} >+ >+static void dsa_sandbox_port_disable(struct udevice *dev, int port, >+ struct phy_device *phy) >+{ >+ struct dsa_sandbox_priv *priv = dev->priv; >+ >+ if (!priv->enabled) >+ return; >+ >+ priv->port_enabled &= ~BIT(port); >+} >+ >+static int dsa_sandbox_xmit(struct udevice *dev, int port, void *packet, >+ int length) >+{ >+ struct dsa_sandbox_priv *priv = dev->priv; >+ struct dsa_sandbox_tag *tag = packet; >+ >+ if (!priv->enabled) >+ return -EFAULT; >+ >+ if (!(priv->port_enabled & BIT(port))) >+ return -EFAULT; >+ >+ tag->magic = DSA_SANDBOX_MAGIC; >+ tag->port = port; >+ >+ return 0; >+} >+ >+static int dsa_sandbox_rcv(struct udevice *dev, int *port, void *packet, >+ int length) >+{ >+ struct dsa_sandbox_priv *priv = dev->priv; >+ struct dsa_sandbox_tag *tag = packet; >+ >+ if (!priv->enabled) >+ return -EFAULT; >+ >+ if (tag->magic != DSA_SANDBOX_MAGIC) >+ return -EFAULT; >+ >+ *port = tag->port; >+ if (!(priv->port_enabled & BIT(*port))) >+ return -EFAULT; >+ >+ return 0; >+} >+ >+static const struct dsa_ops dsa_sandbox_ops = { >+ .port_enable = dsa_sandbox_port_enable, >+ .port_disable = dsa_sandbox_port_disable, >+ .xmit = dsa_sandbox_xmit, >+ .rcv = dsa_sandbox_rcv, >+}; >+ >+static int dsa_sandbox_bind(struct udevice *dev) { >+ struct dsa_perdev_platdata *pdata = dev->platdata; >+ >+ /* must be at least 4 to match sandbox test DT */ >+ pdata->num_ports = 4; >+ pdata->headroom = DSA_SANDBOX_TAG_LEN; >+ >+ return 0; >+} >+ >+static int dsa_sandbox_probe(struct udevice *dev) { >+ struct dsa_sandbox_priv *priv = dev_get_priv(dev); >+ >+ /* >+ * return error if DSA is not being tested so we don't break existing >+ * eth test. >+ */ >+ if (!dsa_sandbox_port_mask) >+ return -EINVAL; >+ >+ priv->enabled = 1; >+ >+ return 0; >+} >+ >+static int dsa_sandbox_remove(struct udevice *dev) { >+ struct dsa_sandbox_priv *priv = dev_get_priv(dev); >+ >+ priv->enabled = 0; >+ >+ return 0; >+} >+ >+static const struct udevice_id dsa_sandbox_ids[] = { >+ { .compatible = "sandbox,dsa" }, >+ { } >+}; >+ >+U_BOOT_DRIVER(dsa_sandbox) = { >+ .name = "dsa_sandbox", >+ .id = UCLASS_DSA, >+ .of_match = dsa_sandbox_ids, >+ .bind = dsa_sandbox_bind, >+ .probe = dsa_sandbox_probe, >+ .remove = dsa_sandbox_remove, >+ .ops = &dsa_sandbox_ops, >+ .priv_auto_alloc_size = sizeof(struct dsa_sandbox_priv), >+ .platdata_auto_alloc_size = sizeof(struct dsa_perdev_platdata), }; >+ >+struct dsa_sandbox_eth_priv { >+ int enabled; >+ int started; >+ int packet_length; >+ uchar packet[PKTSIZE_ALIGN]; >+}; >+ >+static int dsa_eth_sandbox_start(struct udevice *dev) { >+ struct dsa_sandbox_eth_priv *priv = dev->priv; >+ >+ if (!priv->enabled) >+ return -EFAULT; >+ >+ priv->started = 1; >+ >+ return 0; >+} >+ >+static void dsa_eth_sandbox_stop(struct udevice *dev) { >+ struct dsa_sandbox_eth_priv *priv = dev->priv; >+ >+ if (!priv->enabled) >+ return; >+ >+ priv->started = 0; >+} >+ >+static int dsa_eth_sandbox_send(struct udevice *dev, void *packet, int >+length) { >+ struct dsa_sandbox_eth_priv *priv = dev->priv; >+ struct dsa_sandbox_tag *tag = packet; >+ >+ if (!priv->enabled || !priv->started) >+ return -EFAULT; >+ >+ memcpy(priv->packet, packet, length); >+ priv->packet_length = length; >+ >+ /* >+ * for DSA test frames we only respond if the associated port is >enabled >+ * in the dsa test port mask >+ */ >+ >+ if (tag->magic == DSA_SANDBOX_MAGIC) { >+ int port = tag->port; >+ >+ if (!(dsa_sandbox_port_mask & BIT(port))) >+ /* drop the frame, port is not enabled */ >+ priv->packet_length = 0; >+ } >+ >+ return 0; >+} >+ >+static int dsa_eth_sandbox_recv(struct udevice *dev, int flags, uchar >+**packetp) { >+ struct dsa_sandbox_eth_priv *priv = dev->priv; >+ int length = priv->packet_length; >+ >+ if (!priv->enabled || !priv->started) >+ return -EFAULT; >+ >+ if (!length) { >+ /* no frames pending, force a time-out */ >+ timer_test_add_offset(100); >+ return -EAGAIN; >+ } >+ >+ *packetp = priv->packet; >+ priv->packet_length = 0; >+ >+ return length; >+} >+ >+static const struct eth_ops dsa_eth_sandbox_ops = { >+ .start = dsa_eth_sandbox_start, >+ .send = dsa_eth_sandbox_send, >+ .recv = dsa_eth_sandbox_recv, >+ .stop = dsa_eth_sandbox_stop, >+}; >+ >+static int dsa_eth_sandbox_bind(struct udevice *dev) { >+ return 0; >+} >+ >+static int dsa_eth_sandbox_probe(struct udevice *dev) { >+ struct dsa_sandbox_eth_priv *priv = dev->priv; >+ >+ priv->enabled = 1; >+ >+ /* >+ * return error if DSA is not being tested do we don't break existing >+ * eth test. >+ */ >+ return dsa_sandbox_port_mask ? 0 : -EINVAL; } >+ >+static int dsa_eth_sandbox_remove(struct udevice *dev) { >+ struct dsa_sandbox_eth_priv *priv = dev->priv; >+ >+ priv->enabled = 0; >+ >+ return 0; >+} >+ >+static const struct udevice_id dsa_eth_sandbox_ids[] = { >+ { .compatible = "sandbox,dsa-eth" }, >+ { } >+}; >+ >+U_BOOT_DRIVER(dsa_eth_sandbox) = { >+ .name = "dsa_eth_sandbox", >+ .id = UCLASS_ETH, >+ .of_match = dsa_eth_sandbox_ids, >+ .bind = dsa_eth_sandbox_bind, >+ .probe = dsa_eth_sandbox_probe, >+ .remove = dsa_eth_sandbox_remove, >+ .ops = &dsa_eth_sandbox_ops, >+ .platdata_auto_alloc_size = sizeof(struct eth_pdata), >+ .priv_auto_alloc_size = sizeof(struct dsa_sandbox_eth_priv), }; >-- >2.17.1
Kindly fix build error for target BUILDMAN="sandbox x86" TOOLCHAIN="i386" https://travis-ci.org/github/p-priyanka-jain/u-boot/jobs/711090082 Regards Priyanka
