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log信息
[ 1.279600] rk_gmac-dwmac fe300000.ethernet: clock input or output? (input).[ 1.280239] rk_gmac-dwmac fe300000.ethernet: TX delay(0x28).[ 1.280746] rk_gmac-dwmac fe300000.ethernet: RX delay(0x11).[ 1.281275] rk_gmac-dwmac fe300000.ethernet: integrated PHY? (no).[ 1.281991] rk_gmac-dwmac fe300000.ethernet: cannot get clock clk_mac_speed[ 1.282620] rk_gmac-dwmac fe300000.ethernet: clock input from PHY[ 1.288166] rk_gmac-dwmac fe300000.ethernet: init for RGMII[ 1.288783] stmmac - user ID: 0x10, Synopsys ID: 0x35[ 1.289240] Ring mode enabled[ 1.289512] DMA HW capability register supported[ 1.289911] Normal descriptors[ 1.290220] RX Checksum Offload Engine supported (type 2)[ 1.290717] TX Checksum insertion supported[ 1.291093] Wake-Up On Lan supported[ 1.291463] Enable RX Mitigation via HW Watchdog Timer[ 1.356532] libphy: stmmac: probed[ 1.356845] eth%d: PHY ID 001cc915 at 0 IRQ POLL (stmmac-0:00) active[ 1.357428] eth%d: PHY ID 001cc915 at 1 IRQ POLL (stmmac-0:01)
sysfs接口信息
[root@rk3399:/]# cat /sys/devices/platform/fe300000.ethernet/mdio_bus/stmmac-0/device/ stmmac-0:00/ subsystem/power/ stmmac-0:01/ uevent[root@rk3399:/]# cat /sys/devices/platform/fe300000.ethernet/mdio_bus/stmmac-0/stmmac-0:00/phy_id 0x001cc915[root@rk3399:/]# cat /sys/devices/platform/fe300000.ethernet/mdio_bus/stmmac-0/stmmac-0:00/phy_registers 0: 0x1140 1: 0x796d 2: 0x1c 3: 0xc915 4: 0x1e1 5: 0xc1e1 6: 0xd 7: 0x2001 8: 0x6001 9: 0x30010: 0x380011: 0x012: 0x013: 0x014: 0x015: 0x300016: 0x16e17: 0xad4218: 0x9f0119: 0x6c5220: 0x804021: 0x100622: 0x410023: 0x210024: 0x025: 0x8c0026: 0x4027: 0x10628: 0x217c29: 0x803830: 0x12331: 0x0
log信息
[ 1.286877] rk_gmac-dwmac fe300000.ethernet: clock input or output? (input).[ 1.287517] rk_gmac-dwmac fe300000.ethernet: TX delay(0x28).[ 1.288023] rk_gmac-dwmac fe300000.ethernet: RX delay(0x11).[ 1.288552] rk_gmac-dwmac fe300000.ethernet: integrated PHY? (no).[ 1.289270] rk_gmac-dwmac fe300000.ethernet: cannot get clock clk_mac_speed[ 1.289899] rk_gmac-dwmac fe300000.ethernet: clock input from PHY[ 1.295453] rk_gmac-dwmac fe300000.ethernet: init for RGMII[ 1.296059] stmmac - user ID: 0x10, Synopsys ID: 0x35[ 1.296515] Ring mode enabled[ 1.296788] DMA HW capability register supported[ 1.297186] Normal descriptors[ 1.297503] RX Checksum Offload Engine supported (type 2)[ 1.297992] TX Checksum insertion supported[ 1.298376] Wake-Up On Lan supported[ 1.298736] Enable RX Mitigation via HW Watchdog Timer[ 1.364025] libphy: stmmac: probed[ 1.364343] eth%d: No PHY found
驱动文件
kernel/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.ckernel/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.ckernel/drivers/net/ethernet/stmicro/stmmac/stmmac_main.ckernel/drivers/net/phy/phy_device.ckernel/drivers/net/phy/mdio_bus.ckernel/include/linux/phy.hkernel/drivers/net/ethernet/stmicro/stmmac/stmmac.hkernel/include/linux/netdevice.h
#define PHY_MAX_ADDR 32#define SET_NETDEV_DEV(net, pdev) ((net)->dev.parent = (pdev))#define mdiobus_register(bus) __mdiobus_register(bus, THIS_MODULE)
stmmac_mdio_register(struct net_device *ndev) //注册mdio总线，配置总线参数，配置phydev中断属性 mdiobus_register(new_bus); //注册mii_bus，在总线上扫描PHY_ADDR 0到31是否有对应的phydev mdiobus_scan(bus, i); //按照传递的addr数值，获取总线上是否有p对应的phydev，如果有使用phy_device_register函数进行注册 get_phy_device(bus, addr, false); get_phy_id(bus, addr, &phy_id, is_c45, &c45_ids); //按照传递的addr数值读取对应addr上phy设备的id，如果有对应的设备会返回phy设备的id，否则返回0xffffffff phy_device_create(bus, addr, phy_id, is_c45, &c45_ids); phy_device_register(phydev);
/** * stmmac_mdio_register * @ndev: net device structure * Description: it registers the MII bus */int stmmac_mdio_register(struct net_device *ndev){ int err = 0; struct mii_bus *new_bus; int *irqlist; struct stmmac_priv *priv = netdev_priv(ndev); struct stmmac_mdio_bus_data *mdio_bus_data = priv->plat->mdio_bus_data; int addr, found; if (!mdio_bus_data) return 0; new_bus = mdiobus_alloc(); if (new_bus == NULL) return -ENOMEM; if (mdio_bus_data->irqs) { irqlist = mdio_bus_data->irqs; } else { for (addr = 0; addr < PHY_MAX_ADDR; addr++) priv->mii_irq[addr] = PHY_POLL; irqlist = priv->mii_irq; }#ifdef CONFIG_OF if (priv->device->of_node) mdio_bus_data->reset_gpio = -1;#endif new_bus->name = "stmmac"; new_bus->read = &stmmac_mdio_read; new_bus->write = &stmmac_mdio_write; new_bus->reset = &stmmac_mdio_reset; snprintf(new_bus->id, MII_BUS_ID_SIZE, "%s-%x", new_bus->name, priv->plat->bus_id); new_bus->priv = ndev; new_bus->irq = irqlist; new_bus->phy_mask = mdio_bus_data->phy_mask; new_bus->parent = priv->device; err = mdiobus_register(new_bus); if (err != 0) { pr_err("%s: Cannot register as MDIO bus\n", new_bus->name); goto bus_register_fail; } found = 0; for (addr = 0; addr < PHY_MAX_ADDR; addr++) { struct phy_device *phydev = new_bus->phy_map[addr]; if (phydev) { int act = 0; char irq_num[4]; char *irq_str; /* * If an IRQ was provided to be assigned after * the bus probe, do it here. */ if ((mdio_bus_data->irqs == NULL) && (mdio_bus_data->probed_phy_irq > 0)) { irqlist[addr] = mdio_bus_data->probed_phy_irq; phydev->irq = mdio_bus_data->probed_phy_irq; } /* * If we're going to bind the MAC to this PHY bus, * and no PHY number was provided to the MAC, * use the one probed here. */ if (priv->plat->phy_addr == -1) priv->plat->phy_addr = addr; act = (priv->plat->phy_addr == addr); switch (phydev->irq) { case PHY_POLL: irq_str = "POLL"; break; case PHY_IGNORE_INTERRUPT: irq_str = "IGNORE"; break; default: sprintf(irq_num, "%d", phydev->irq); irq_str = irq_num; break; } pr_info("%s: PHY ID %08x at %d IRQ %s (%s)%s\n", ndev->name, phydev->phy_id, addr, irq_str, dev_name(&phydev->dev), act ? " active" : ""); found = 1; } } if (!found) { pr_warn("%s: No PHY found\n", ndev->name); mdiobus_unregister(new_bus); mdiobus_free(new_bus); return -ENODEV; } priv->mii = new_bus; return 0;bus_register_fail: mdiobus_free(new_bus); return err;} /** * __mdiobus_register - bring up all the PHYs on a given bus and attach them to bus * @bus: target mii_bus * @owner: module containing bus accessor functions * * Description: Called by a bus driver to bring up all the PHYs * on a given bus, and attach them to the bus. Drivers should use * mdiobus_register() rather than __mdiobus_register() unless they * need to pass a specific owner module. * * Returns 0 on success or < 0 on error. */ int __mdiobus_register(struct mii_bus *bus, struct module *owner)struct phy_device *mdiobus_scan(struct mii_bus *bus, int addr)/** * get_phy_device - reads the specified PHY device and returns its @phy_device * struct * @bus: the target MII bus * @addr: PHY address on the MII bus * @is_c45: If true the PHY uses the 802.3 clause 45 protocol * * Description: Reads the ID registers of the PHY at @addr on the * @bus, then allocates and returns the phy_device to represent it. */struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45)/** * phy_device_register - Register the phy device on the MDIO bus * @phydev: phy_device structure to be added to the MDIO bus */int phy_device_register(struct phy_device *phydev)struct phy_device *phy_device_create(struct mii_bus *bus, int addr, int phy_id, bool is_c45, struct phy_c45_device_ids *c45_ids)
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