This NIC is similar to the designware nic, however it has different registers and descriptors, hence the new driver.

Signed-off-by: Nathan Sullivan nathan.sullivan@ni.com --- drivers/net/Kconfig | 19 ++ drivers/net/Makefile | 1 + drivers/net/dwc_eth_qos.c | 773 ++++++++++++++++++++++++++++++++++++++++++++++ drivers/net/dwc_eth_qos.h | 219 +++++++++++++ 4 files changed, 1012 insertions(+) create mode 100644 drivers/net/dwc_eth_qos.c create mode 100644 drivers/net/dwc_eth_qos.h

diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig index 302c005..7a4dc68 100644 --- a/drivers/net/Kconfig +++ b/drivers/net/Kconfig @@ -124,6 +124,25 @@ config ETH_DESIGNWARE 100Mbit and 1 Gbit operation. You must enable CONFIG_PHYLIB to provide the PHY (physical media interface).

+config ETH_DESIGNWARE_QOS + bool "Synopsys Designware Ethernet QoS MAC" + select PHYLIB + help + This MAC is present in SoCs from various vendors. It supports + 100Mbit and 1 Gbit operation. You must enable CONFIG_PHYLIB to + provide the PHY (physical media interface). It is similar to + designware ethernet, but with more features and a different + interface. + +config ETH_DESIGNWARE_QOS_FIXED_LINK + bool "Fixed 1G link on QoS MAC" + default n + depends on ETH_DESIGNWARE_QOS + help + Select to force the QoS MAC to always link at 1G, full duplex + with no attached phy. Useful for direct attachment to a + switch. + config ETHOC bool "OpenCores 10/100 Mbps Ethernet MAC" help diff --git a/drivers/net/Makefile b/drivers/net/Makefile index a448526..c8ba347 100644 --- a/drivers/net/Makefile +++ b/drivers/net/Makefile @@ -18,6 +18,7 @@ obj-$(CONFIG_CALXEDA_XGMAC) += calxedaxgmac.o obj-$(CONFIG_CS8900) += cs8900.o obj-$(CONFIG_TULIP) += dc2114x.o obj-$(CONFIG_ETH_DESIGNWARE) += designware.o +obj-$(CONFIG_ETH_DESIGNWARE_QOS) += dwc_eth_qos.o obj-$(CONFIG_DRIVER_DM9000) += dm9000x.o obj-$(CONFIG_DNET) += dnet.o obj-$(CONFIG_E1000) += e1000.o diff --git a/drivers/net/dwc_eth_qos.c b/drivers/net/dwc_eth_qos.c new file mode 100644 index 0000000..f97fca1 --- /dev/null +++ b/drivers/net/dwc_eth_qos.c @@ -0,0 +1,773 @@ +/* + * (C) Copyright 2016 + * National Instruments + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +/* + * Designware QoS ethernet IP driver for U-Boot + */ + +#include <common.h> +#include <dm.h> +#include <errno.h> +#include <miiphy.h> +#include <malloc.h> +#include <pci.h> +#include <linux/compiler.h> +#include <linux/err.h> +#include <asm/io.h> +#include "dwc_eth_qos.h" + +DECLARE_GLOBAL_DATA_PTR; + +#ifndef CONFIG_ETH_DESIGNWARE_QOS_FIXED_LINK + +static int dw_qos_mdio_read(struct mii_dev *bus, int addr, int devad, int reg) +{ +#ifdef CONFIG_DM_ETH + struct dw_qos_eth_dev *priv = dev_get_priv((struct udevice *)bus->priv); + struct eth_mac_regs *mac_p = priv->mac_regs_p; +#else + struct eth_mac_regs *mac_p = bus->priv; +#endif + ulong start; + u32 miiaddr; + int timeout = CONFIG_MDIO_TIMEOUT; + + miiaddr = ((addr << MIIADDRSHIFT) & MII_ADDRMSK) | + ((reg << MIIREGSHIFT) & MII_REGMSK) | MII_READ; + + miiaddr |= (MII_CLKRANGE_150_250M << MIICLKSHIFT) & MII_CLKMSK; + + writel(miiaddr | MII_BUSY, &mac_p->miiaddr); + + start = get_timer(0); + while (get_timer(start) < timeout) { + if (!(readl(&mac_p->miiaddr) & MII_BUSY)) + return readl(&mac_p->miidata); + udelay(10); + }; + + return -ETIMEDOUT; +} + +static int dw_qos_mdio_write(struct mii_dev *bus, int addr, int devad, int reg, + u16 val) +{ +#ifdef CONFIG_DM_ETH + struct dw_qos_eth_dev *priv = dev_get_priv((struct udevice *)bus->priv); + struct eth_mac_regs *mac_p = priv->mac_regs_p; +#else + struct eth_mac_regs *mac_p = bus->priv; +#endif + ulong start; + u32 miiaddr; + int ret = -ETIMEDOUT, timeout = CONFIG_MDIO_TIMEOUT; + + writel(val, &mac_p->miidata); + miiaddr = ((addr << MIIADDRSHIFT) & MII_ADDRMSK) | + ((reg << MIIREGSHIFT) & MII_REGMSK) | MII_WRITE; + + miiaddr |= (MII_CLKRANGE_150_250M << MIICLKSHIFT) & MII_CLKMSK; + + writel(miiaddr | MII_BUSY, &mac_p->miiaddr); + + start = get_timer(0); + while (get_timer(start) < timeout) { + if (!(readl(&mac_p->miiaddr) & MII_BUSY)) { + ret = 0; + break; + } + udelay(10); + }; + + return ret; +} + +#if defined(CONFIG_DM_ETH) && defined(CONFIG_DM_GPIO) +static int dw_qos_mdio_reset(struct mii_dev *bus) +{ + struct udevice *dev = bus->priv; + struct dw_qos_eth_dev *priv = dev_get_priv(dev); + struct dw_qos_eth_pdata *pdata = dev_get_platdata(dev); + int ret; + + if (!dm_gpio_is_valid(&priv->reset_gpio)) + return 0; + + /* reset the phy */ + ret = dm_gpio_set_value(&priv->reset_gpio, 0); + if (ret) + return ret; + + udelay(pdata->reset_delays[0]); + + ret = dm_gpio_set_value(&priv->reset_gpio, 1); + if (ret) + return ret; + + udelay(pdata->reset_delays[1]); + + ret = dm_gpio_set_value(&priv->reset_gpio, 0); + if (ret) + return ret; + + udelay(pdata->reset_delays[2]); + + return 0; +} +#endif + +static int dw_qos_mdio_init(const char *name, void *priv) +{ + struct mii_dev *bus = mdio_alloc(); + + if (!bus) { + printf("Failed to allocate MDIO bus\n"); + return -ENOMEM; + } + + bus->read = dw_qos_mdio_read; + bus->write = dw_qos_mdio_write; + snprintf(bus->name, sizeof(bus->name), "%s", name); +#if defined(CONFIG_DM_ETH) && defined(CONFIG_DM_GPIO) + bus->reset = dw_qos_mdio_reset; +#endif + + bus->priv = priv; + + return mdio_register(bus); +} + +static void dw_qos_adjust_link(struct eth_mac_regs *mac_p, + struct phy_device *phydev) +{ + u32 conf = readl(&mac_p->conf) | FRAMEBURSTENABLE | DISABLERXOWN; + + if (!phydev->link) { + printf("%s: No link.\n", phydev->dev->name); + return; + } + + if (phydev->speed != 1000) + conf |= MII_PORTSELECT; + else + conf &= ~MII_PORTSELECT; + + if (phydev->speed == 100) + conf |= FES_100; + + if (phydev->duplex) + conf |= FULLDPLXMODE; + + writel(conf, &mac_p->conf); + + printf("Speed: %d, %s duplex%s\n", phydev->speed, + (phydev->duplex) ? "full" : "half", + (phydev->port == PORT_FIBRE) ? ", fiber mode" : ""); +} + +static int dw_qos_phy_init(struct dw_qos_eth_dev *priv, void *dev) +{ + struct phy_device *phydev; + int mask = 0xffffffff, ret; + +#ifdef CONFIG_PHY_ADDR + mask = 1 << CONFIG_PHY_ADDR; +#endif + + phydev = phy_find_by_mask(priv->bus, mask, priv->interface); + if (!phydev) + return -ENODEV; + + phy_connect_dev(phydev, dev); + + phydev->supported &= PHY_GBIT_FEATURES; + if (priv->max_speed) { + ret = phy_set_supported(phydev, priv->max_speed); + if (ret) + return ret; + } + phydev->advertising = phydev->supported; + + priv->phydev = phydev; + phy_config(phydev); + + return 0; +} + +#endif /* CONFIG_ETH_DESIGNWARE_QOS_FIXED_LINK */ + +static void tx_descs_init(struct dw_qos_eth_dev *priv) +{ + struct eth_dma_ch0_regs *ch0_p = priv->dma_ch0_regs_p; + struct dmamacdescr *desc_table_p = &priv->tx_mac_descrtable[0]; + char *txbuffs = &priv->txbuffs[0]; + struct dmamacdescr *desc_p; + u32 idx; + + for (idx = 0; idx < CONFIG_TX_DESCR_NUM; idx++) { + desc_p = &desc_table_p[idx]; + desc_p->des0 = (ulong)&txbuffs[idx * CONFIG_ETH_BUFSIZE]; + desc_p->des1 = 0; + desc_p->des2 = 0; + desc_p->des3 = DESC_TXSTS_TXLAST | DESC_TXSTS_TXFIRST; + } + + /* Flush all Tx buffer descriptors at once */ + flush_dcache_range((ulong)priv->tx_mac_descrtable, + (ulong)priv->tx_mac_descrtable + + sizeof(priv->tx_mac_descrtable)); + + writel(0, &ch0_p->txdescaddrhi); + writel((ulong)&desc_table_p[0], &ch0_p->txdescaddrlo); + writel(CONFIG_TX_DESCR_NUM - 1, &ch0_p->txdescringlen); + writel((ulong)&desc_table_p[CONFIG_TX_DESCR_NUM], &ch0_p->txdesctail); + priv->tx_currdescnum = 0; +} + +static void rx_descs_init(struct dw_qos_eth_dev *priv) +{ + struct eth_dma_ch0_regs *ch0_p = priv->dma_ch0_regs_p; + struct dmamacdescr *desc_table_p = &priv->rx_mac_descrtable[0]; + char *rxbuffs = &priv->rxbuffs[0]; + struct dmamacdescr *desc_p; + u32 idx; + + /* Before passing buffers to GMAC we need to make sure zeros + * written there right after "priv" structure allocation were + * flushed into RAM. + * Otherwise there's a chance to get some of them flushed in RAM when + * GMAC is already pushing data to RAM via DMA. This way incoming from + * GMAC data will be corrupted. */ + flush_dcache_range((ulong)rxbuffs, (ulong)rxbuffs + RX_TOTAL_BUFSIZE); + + for (idx = 0; idx < CONFIG_RX_DESCR_NUM; idx++) { + desc_p = &desc_table_p[idx]; + desc_p->des0 = (ulong)&rxbuffs[idx * CONFIG_ETH_BUFSIZE]; + desc_p->des1 = 0; + desc_p->des2 = 0; + desc_p->des3 = DESC_RXSTS_OWNBYDMA | DESC_RXSTS_BUF1V; + } + + /* Flush all Rx buffer descriptors at once */ + flush_dcache_range((ulong)priv->rx_mac_descrtable, + (ulong)priv->rx_mac_descrtable + + sizeof(priv->rx_mac_descrtable)); + + writel(0, &ch0_p->rxdescaddrhi); + writel((ulong)&desc_table_p[0], &ch0_p->rxdescaddrlo); + writel(CONFIG_RX_DESCR_NUM - 1, &ch0_p->rxdescringlen); + writel((ulong)&desc_table_p[CONFIG_RX_DESCR_NUM], &ch0_p->rxdesctail); + priv->rx_currdescnum = 0; +} + +static int _dw_qos_write_hwaddr(struct dw_qos_eth_dev *priv, u8 *mac_id) +{ + struct eth_mac_regs *mac_p = priv->mac_regs_p; + u32 macid_lo, macid_hi; + + macid_lo = mac_id[0] + (mac_id[1] << 8) + (mac_id[2] << 16) + + (mac_id[3] << 24); + macid_hi = mac_id[4] + (mac_id[5] << 8); + + writel(macid_hi, &mac_p->macaddr0hi); + writel(macid_lo, &mac_p->macaddr0lo); + + return 0; +} + +static void _dw_qos_eth_halt(struct dw_qos_eth_dev *priv) +{ + struct eth_mac_regs *mac_p = priv->mac_regs_p; + struct eth_dma_ch0_regs *ch0_p = priv->dma_ch0_regs_p; + + writel(readl(&mac_p->conf) & ~(RXENABLE | TXENABLE), &mac_p->conf); + writel(readl(&ch0_p->txcontrol) & ~(TXST), &ch0_p->txcontrol); + writel(readl(&ch0_p->rxcontrol) & ~(RXST), &ch0_p->rxcontrol); + +#ifndef CONFIG_ETH_DESIGNWARE_QOS_FIXED_LINK + phy_shutdown(priv->phydev); +#endif +} + +static int _dw_qos_eth_init(struct dw_qos_eth_dev *priv, u8 *enetaddr) +{ + struct eth_mac_regs *mac_p = priv->mac_regs_p; + struct eth_dma_regs *dma_p = priv->dma_regs_p; + struct eth_dma_ch0_regs *ch0_p = priv->dma_ch0_regs_p; + struct eth_mtl_q0_regs *mtl_p = priv->mtl_q0_regs_p; + unsigned int start, burst; + int ret = 0; + + writel(readl(&dma_p->dmamode) | DMAMAC_SRST, &dma_p->dmamode); + + start = get_timer(0); + while (readl(&dma_p->dmamode) & DMAMAC_SRST) { + if (get_timer(start) >= CONFIG_MACRESET_TIMEOUT) { + printf("DMA reset timeout\n"); + return -ETIMEDOUT; + } + + mdelay(100); + }; + + /* + * Soft reset above clears HW address registers. + * So we have to set it here once again. + */ + _dw_qos_write_hwaddr(priv, enetaddr); + + rx_descs_init(priv); + tx_descs_init(priv); + + writel(PBLX8, &ch0_p->control); + /* enable TX queue store-and-forward mode */ + writel(TXQ0_TSF, &mtl_p->txopmode); + +#ifdef CONFIG_DW_AXI_BURST_LEN + burst = CONFIG_DW_AXI_BURST_LEN / 8; +#else + burst = 2; +#endif + writel(TXST | (burst << TXPBLSHIFT), &ch0_p->txcontrol); + writel(RXST | (burst << RXPBLSHIFT) | + (CONFIG_ETH_BUFSIZE << RBSZSHIFT), &ch0_p->rxcontrol); + +#ifndef CONFIG_ETH_DESIGNWARE_QOS_FIXED_LINK + /* Start up the PHY */ + ret = phy_startup(priv->phydev); + if (ret) { + printf("Could not initialize PHY %s\n", + priv->phydev->dev->name); + return ret; + } + + dw_qos_adjust_link(mac_p, priv->phydev); + + if (!priv->phydev->link) + return -EIO; +#else + /* just go into 1G full duplex mode and stay there */ + writel(MII_PORTSELECT | FRAMEBURSTENABLE | DISABLERXOWN | FULLDPLXMODE, + &mac_p->conf); +#endif + + writel(readl(&mac_p->conf) | RXENABLE | TXENABLE, &mac_p->conf); + + return ret; +} + +static int _dw_qos_eth_send(struct dw_qos_eth_dev *priv, void *packet, + int length) +{ + struct eth_dma_ch0_regs *ch0_p = priv->dma_ch0_regs_p; + u32 desc_num = priv->tx_currdescnum; + struct dmamacdescr *desc_p = &priv->tx_mac_descrtable[desc_num]; + ulong desc_start = (ulong)desc_p; + ulong desc_end = desc_start + + roundup(sizeof(*desc_p), ARCH_DMA_MINALIGN); + ulong data_start = (ulong)&priv->txbuffs[desc_num * CONFIG_ETH_BUFSIZE]; + ulong data_end = data_start + roundup(length, ARCH_DMA_MINALIGN); + + /* + * Strictly we only need to invalidate the "txrx_status" field + * for the following check, but on some platforms we cannot + * invalidate only 4 bytes, so we flush the entire descriptor, + * which is 16 bytes in total. This is safe because the + * individual descriptors in the array are each aligned to + * ARCH_DMA_MINALIGN and padded appropriately. + */ + invalidate_dcache_range(desc_start, desc_end); + + /* Check if the descriptor is owned by CPU */ + if (desc_p->des3 & DESC_TXSTS_OWNBYDMA) { + printf("CPU not owner of tx frame\n"); + return -EPERM; + } + + memcpy((void *)data_start, packet, length); + + /* Flush data to be sent */ + flush_dcache_range(data_start, data_end); + + desc_p->des0 = data_start; + desc_p->des1 = 0; + desc_p->des2 = length & DESC_TXSTS_LENMASK; + desc_p->des3 = (length & DESC_TXSTS_LENMASK) | DESC_TXSTS_TXFIRST | + DESC_TXSTS_TXLAST; + + desc_p->des3 |= DESC_TXSTS_OWNBYDMA; + + /* Flush modified buffer descriptor */ + flush_dcache_range(desc_start, desc_end); + + /* Test the wrap-around condition. */ + if (++desc_num >= CONFIG_TX_DESCR_NUM) + desc_num = 0; + + priv->tx_currdescnum = desc_num; + + /* Start the transmission */ + writel((ulong)&priv->tx_mac_descrtable[CONFIG_TX_DESCR_NUM], + &ch0_p->txdesctail); + + return 0; +} + +static int _dw_qos_eth_recv(struct dw_qos_eth_dev *priv, uchar **packetp) +{ + u32 status, desc_num = priv->rx_currdescnum; + struct dmamacdescr *desc_p = &priv->rx_mac_descrtable[desc_num]; + int length = -EAGAIN; + ulong desc_start = (ulong)desc_p; + ulong desc_end = desc_start + + roundup(sizeof(*desc_p), ARCH_DMA_MINALIGN); + ulong data_start = (ulong)&priv->rxbuffs[desc_num * CONFIG_ETH_BUFSIZE]; + ulong data_end; + + /* Invalidate entire buffer descriptor */ + invalidate_dcache_range(desc_start, desc_end); + + status = desc_p->des3; + + /* Check if the owner is the CPU */ + if (!(status & DESC_RXSTS_OWNBYDMA)) { + length = (status & DESC_RXSTS_FRMLENMSK); + + /* Invalidate received data */ + data_end = data_start + roundup(length, ARCH_DMA_MINALIGN); + invalidate_dcache_range(data_start, data_end); + *packetp = (uchar *)data_start; + } + + return length; +} + +static int _dw_qos_free_pkt(struct dw_qos_eth_dev *priv) +{ + u32 desc_num = priv->rx_currdescnum; + struct dmamacdescr *desc_p = &priv->rx_mac_descrtable[desc_num]; + ulong desc_start = (ulong)desc_p; + ulong desc_end = desc_start + + roundup(sizeof(*desc_p), ARCH_DMA_MINALIGN); + + desc_p->des0 = (ulong)&priv->rxbuffs[desc_num * CONFIG_ETH_BUFSIZE]; + desc_p->des1 = 0; + desc_p->des2 = 0; + /* + * Make the current descriptor valid again and go to + * the next one + */ + desc_p->des3 = DESC_RXSTS_OWNBYDMA | DESC_RXSTS_BUF1V; + + /* Flush only status field - others weren't changed */ + flush_dcache_range(desc_start, desc_end); + + /* Test the wrap-around condition. */ + if (++desc_num >= CONFIG_RX_DESCR_NUM) + desc_num = 0; + priv->rx_currdescnum = desc_num; + + return 0; +} + +#ifndef CONFIG_DM_ETH +static int dw_qos_eth_init(struct eth_device *dev, bd_t *bis) +{ + return _dw_qos_eth_init(dev->priv, dev->enetaddr); +} + +static int dw_qos_eth_send(struct eth_device *dev, void *packet, int length) +{ + return _dw_qos_eth_send(dev->priv, packet, length); +} + +static int dw_qos_eth_recv(struct eth_device *dev) +{ + uchar *packet; + int length; + + length = _dw_qos_eth_recv(dev->priv, &packet); + if (length == -EAGAIN) + return 0; + net_process_received_packet(packet, length); + + _dw_qos_free_pkt(dev->priv); + + return 0; +} + +static void dw_qos_eth_halt(struct eth_device *dev) +{ + return _dw_qos_eth_halt(dev->priv); +} + +static int dw_qos_write_hwaddr(struct eth_device *dev) +{ + return _dw_qos_write_hwaddr(dev->priv, dev->enetaddr); +} + +int dw_qos_initialize(ulong base_addr, u32 interface) +{ + struct eth_device *dev; + struct dw_qos_eth_dev *priv; + + dev = (struct eth_device *)malloc(sizeof(struct eth_device)); + if (!dev) + return -ENOMEM; + + /* + * Since the priv structure contains the descriptors which need a strict + * buswidth alignment, memalign is used to allocate memory + */ + priv = (struct dw_qos_eth_dev *)memalign(ARCH_DMA_MINALIGN, + sizeof(struct dw_qos_eth_dev)); + if (!priv) { + free(dev); + return -ENOMEM; + } + + if ((phys_addr_t)priv + sizeof(*priv) > (1ULL << 32)) { + printf("dw_qos: buffers are outside DMA memory\n"); + return -EINVAL; + } + + memset(dev, 0, sizeof(struct eth_device)); + memset(priv, 0, sizeof(struct dw_qos_eth_dev)); + + sprintf(dev->name, "dwmac.%lx", base_addr); + dev->iobase = (int)base_addr; + dev->priv = priv; + + priv->dev = dev; + priv->mac_regs_p = (struct eth_mac_regs *)base_addr; + priv->dma_regs_p = (struct eth_dma_regs *)(base_addr + + DW_DMA_BASE_OFFSET); + + dev->init = dw_qos_eth_init; + dev->send = dw_qos_eth_send; + dev->recv = dw_qos_eth_recv; + dev->halt = dw_qos_eth_halt; + dev->write_hwaddr = dw_qos_write_hwaddr; + + eth_register(dev); + + priv->interface = interface; + +#ifndef CONFIG_ETH_DESIGNWARE_QOS_FIXED_LINK + dw_qos_mdio_init(dev->name, priv->mac_regs_p); + priv->bus = miiphy_get_dev_by_name(dev->name); + + return dw_qos_phy_init(priv, dev); +#else + return 0; +#endif +} +#endif + +#ifdef CONFIG_DM_ETH +static int dw_qos_eth_start(struct udevice *dev) +{ + struct eth_pdata *pdata = dev_get_platdata(dev); + + return _dw_qos_eth_init(dev->priv, pdata->enetaddr); +} + +static int dw_qos_eth_send(struct udevice *dev, void *packet, int length) +{ + struct dw_qos_eth_dev *priv = dev_get_priv(dev); + + return _dw_qos_eth_send(priv, packet, length); +} + +static int dw_qos_eth_recv(struct udevice *dev, int flags, uchar **packetp) +{ + struct dw_qos_eth_dev *priv = dev_get_priv(dev); + + return _dw_qos_eth_recv(priv, packetp); +} + +static int dw_qos_eth_free_pkt(struct udevice *dev, uchar *packet, + int length) +{ + struct dw_qos_eth_dev *priv = dev_get_priv(dev); + + return _dw_qos_free_pkt(priv); +} + +static void dw_qos_eth_stop(struct udevice *dev) +{ + struct dw_qos_eth_dev *priv = dev_get_priv(dev); + + return _dw_qos_eth_halt(priv); +} + +static int dw_qos_eth_write_hwaddr(struct udevice *dev) +{ + struct eth_pdata *pdata = dev_get_platdata(dev); + struct dw_qos_eth_dev *priv = dev_get_priv(dev); + + return _dw_qos_write_hwaddr(priv, pdata->enetaddr); +} + +static int dw_qos_eth_bind(struct udevice *dev) +{ +#ifdef CONFIG_DM_PCI + static int num_cards; + char name[20]; + + /* Create a unique device name for PCI type devices */ + if (device_is_on_pci_bus(dev)) { + sprintf(name, "eth_dw_qos#%u", num_cards++); + device_set_name(dev, name); + } +#endif + + return 0; +} + +static int dw_qos_eth_probe(struct udevice *dev) +{ + struct eth_pdata *pdata = dev_get_platdata(dev); + struct dw_qos_eth_dev *priv = dev_get_priv(dev); + u32 iobase = pdata->iobase; + ulong ioaddr; + int ret; + +#ifdef CONFIG_DM_PCI + /* + * If we are on PCI bus, either directly attached to a PCI root port, + * or via a PCI bridge, fill in platdata before we probe the hardware. + */ + if (device_is_on_pci_bus(dev)) { + dm_pci_read_config32(dev, PCI_BASE_ADDRESS_0, &iobase); + iobase &= PCI_BASE_ADDRESS_MEM_MASK; + iobase = dm_pci_mem_to_phys(dev, iobase); + + pdata->iobase = iobase; + pdata->phy_interface = PHY_INTERFACE_MODE_RMII; + } +#endif + + debug("%s, iobase=%x, priv=%p\n", __func__, iobase, priv); + ioaddr = iobase; + priv->mac_regs_p = (struct eth_mac_regs *)ioaddr; + priv->dma_regs_p = (struct eth_dma_regs *)(ioaddr + DW_DMA_BASE_OFFSET); + priv->dma_ch0_regs_p = + (struct eth_dma_ch0_regs *)(ioaddr + DW_DMA_CH0_BASE_OFFSET); + priv->mtl_q0_regs_p = + (struct eth_mtl_q0_regs *)(ioaddr + DW_MTL_Q0_BASE_OFFSET); + priv->interface = pdata->phy_interface; + priv->max_speed = pdata->max_speed; + +#ifndef CONFIG_ETH_DESIGNWARE_QOS_FIXED_LINK + dw_qos_mdio_init(dev->name, dev); + priv->bus = miiphy_get_dev_by_name(dev->name); + + ret = dw_qos_phy_init(priv, dev); +#else + ret = 0; +#endif + debug("%s, ret=%d\n", __func__, ret); + + return ret; +} + +static int dw_qos_eth_remove(struct udevice *dev) +{ + struct dw_qos_eth_dev *priv = dev_get_priv(dev); + + free(priv->phydev); +#ifndef CONFIG_ETH_DESIGNWARE_QOS_FIXED_LINK + mdio_unregister(priv->bus); + mdio_free(priv->bus); +#endif + + return 0; +} + +static const struct eth_ops dw_qos_eth_ops = { + .start = dw_qos_eth_start, + .send = dw_qos_eth_send, + .recv = dw_qos_eth_recv, + .free_pkt = dw_qos_eth_free_pkt, + .stop = dw_qos_eth_stop, + .write_hwaddr = dw_qos_eth_write_hwaddr, +}; + +static int dw_qos_eth_ofdata_to_platdata(struct udevice *dev) +{ + struct dw_qos_eth_pdata *dw_qos_pdata = dev_get_platdata(dev); +#ifdef CONFIG_DM_GPIO + struct dw_qos_eth_dev *priv = dev_get_priv(dev); +#endif + struct eth_pdata *pdata = &dw_qos_pdata->eth_pdata; + const char *phy_mode; + const fdt32_t *cell; +#ifdef CONFIG_DM_GPIO + int reset_flags = GPIOD_IS_OUT; +#endif + int ret = 0; + + pdata->iobase = (ulong)dev_map_physmem(dev, 0x2000); + pdata->phy_interface = -1; + phy_mode = fdt_getprop(gd->fdt_blob, dev->of_offset, "phy-mode", NULL); + if (phy_mode) + pdata->phy_interface = phy_get_interface_by_name(phy_mode); + if (pdata->phy_interface == -1) { + debug("%s: Invalid PHY interface '%s'\n", __func__, phy_mode); + return -EINVAL; + } + + pdata->max_speed = 0; + cell = fdt_getprop(gd->fdt_blob, dev->of_offset, "max-speed", NULL); + if (cell) + pdata->max_speed = fdt32_to_cpu(*cell); + +#ifdef CONFIG_DM_GPIO + if (fdtdec_get_bool(gd->fdt_blob, dev->of_offset, + "snps,reset-active-low")) + reset_flags |= GPIOD_ACTIVE_LOW; + + ret = gpio_request_by_name(dev, "snps,reset-gpio", 0, + &priv->reset_gpio, reset_flags); + if (ret == 0) { + ret = fdtdec_get_int_array(gd->fdt_blob, dev->of_offset, + "snps,reset-delays-us", dw_qos_pdata->reset_delays, 3); + } else if (ret == -ENOENT) { + ret = 0; + } +#endif + + return ret; +} + +static const struct udevice_id dw_qos_eth_ids[] = { + { .compatible = "snps,dwc-qos-ethernet-4.10" }, + { } +}; + +U_BOOT_DRIVER(eth_dw_qos) = { + .name = "eth_dw_qos", + .id = UCLASS_ETH, + .of_match = dw_qos_eth_ids, + .ofdata_to_platdata = dw_qos_eth_ofdata_to_platdata, + .bind = dw_qos_eth_bind, + .probe = dw_qos_eth_probe, + .remove = dw_qos_eth_remove, + .ops = &dw_qos_eth_ops, + .priv_auto_alloc_size = sizeof(struct dw_qos_eth_dev), + .platdata_auto_alloc_size = sizeof(struct dw_qos_eth_pdata), + .flags = DM_FLAG_ALLOC_PRIV_DMA, +}; + +static struct pci_device_id supported[] = { + { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_QRK_EMAC) }, + { } +}; + +U_BOOT_PCI_DEVICE(eth_dw_qos, supported); +#endif diff --git a/drivers/net/dwc_eth_qos.h b/drivers/net/dwc_eth_qos.h new file mode 100644 index 0000000..cfe12e1 --- /dev/null +++ b/drivers/net/dwc_eth_qos.h @@ -0,0 +1,219 @@ +/* + * (C) Copyright 2016 + * National Instruments + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef _DW_ETH_QOS_H +#define _DW_ETH_QOS_H + +#ifdef CONFIG_DM_GPIO +#include <asm-generic/gpio.h> +#endif + +#define CONFIG_TX_DESCR_NUM 16 +#define CONFIG_RX_DESCR_NUM 16 +#define CONFIG_ETH_BUFSIZE 2048 +#define TX_TOTAL_BUFSIZE (CONFIG_ETH_BUFSIZE * CONFIG_TX_DESCR_NUM) +#define RX_TOTAL_BUFSIZE (CONFIG_ETH_BUFSIZE * CONFIG_RX_DESCR_NUM) + +#define CONFIG_MACRESET_TIMEOUT (3 * CONFIG_SYS_HZ) +#define CONFIG_MDIO_TIMEOUT (3 * CONFIG_SYS_HZ) + +struct eth_mac_regs { + u32 conf; /* 0x00 */ + u32 ext_conf; /* 0x04 */ + u32 reserved_1[42]; + u32 intstatus; /* 0xb0 */ + u32 intenable; /* 0xb4 */ + u32 rx_tx_status; /* 0xb8 */ + u32 reserved_2[81]; + u32 miiaddr; /* 0x200 */ + u32 miidata; /* 0x204 */ + u32 reserved_3[62]; + u32 macaddr0hi; /* 0x300 */ + u32 macaddr0lo; /* 0x304 */ +}; + +/* MAC configuration register definitions */ +#define FRAMEBURSTENABLE (1 << 18) +#define MII_PORTSELECT (1 << 15) +#define FES_100 (1 << 14) +#define DISABLERXOWN (1 << 10) +#define FULLDPLXMODE (1 << 13) +#define RXENABLE (1 << 0) +#define TXENABLE (1 << 1) + +/* MII address register definitions */ +#define MII_BUSY (1 << 0) +#define MII_WRITE (1 << 2) +#define MII_READ (3 << 2) +#define MII_CLKRANGE_60_100M (0) +#define MII_CLKRANGE_100_150M (0x1) +#define MII_CLKRANGE_20_35M (0x2) +#define MII_CLKRANGE_35_60M (0x3) +#define MII_CLKRANGE_150_250M (0x4) +#define MII_CLKRANGE_250_300M (0x5) + +#define MIIADDRSHIFT (21) +#define MIIREGSHIFT (16) +#define MIICLKSHIFT (8) +#define MII_REGMSK (0x1F << 16) +#define MII_ADDRMSK (0x1F << 21) +#define MII_CLKMSK (0xF << 8); + +struct eth_mtl_q0_regs { + u32 txopmode; /* 0x00 */ + u32 reserved_1[5]; + u32 rxopmode; /* 0x30 */ +}; + +#define DW_MTL_Q0_BASE_OFFSET (0xd00) + +/* TX queue 0 operation mode definitions */ +#define TXQ0_TSF (1 << 1) + +struct eth_dma_regs { + u32 dmamode; /* 0x00 */ + u32 sysbusmode; /* 0x04 */ + u32 status; /* 0x08 */ + u32 debug0; /* 0x0c */ + u32 debug1; /* 0x10 */ + u32 debug2; /* 0x14 */ + u32 reserved_1[3]; + u32 axi_ace_ar; /* 0x20 */ + u32 axi_ace_aw; /* 0x24 */ + u32 axibus; /* 0x28 */ + u32 reserved2[7]; + u32 currhosttxdesc; /* 0x48 */ + u32 currhostrxdesc; /* 0x4c */ + u32 currhosttxbuffaddr; /* 0x50 */ + u32 currhostrxbuffaddr; /* 0x54 */ +}; + +#define DW_DMA_BASE_OFFSET (0x1000) + +/* Default DMA Burst length */ +#ifndef CONFIG_DW_GMAC_DEFAULT_DMA_PBL +#define CONFIG_DW_GMAC_DEFAULT_DMA_PBL 8 +#endif + +/* DMA mode register definitions */ +#define PRIORXTX_41 (3 << 12) +#define PRIORXTX_31 (2 << 12) +#define PRIORXTX_21 (1 << 12) +#define PRIORXTX_11 (0 << 12) +#define TXHIGHPRIO (1 << 11) +#define DMAMAC_SRST (1 << 0) + +struct eth_dma_ch0_regs { + u32 control; /* 0x00 */ + u32 txcontrol; /* 0x04 */ + u32 rxcontrol; /* 0x08 */ + u32 reserved_1; /* 0x0c */ + u32 txdescaddrhi; /* 0x10 */ + u32 txdescaddrlo; /* 0x14 */ + u32 rxdescaddrhi; /* 0x18 */ + u32 rxdescaddrlo; /* 0x1c */ + u32 txdesctail; /* 0x20 */ + u32 reserved_2; /* 0x24 */ + u32 rxdesctail; /* 0x28 */ + u32 txdescringlen; /* 0x2c */ + u32 rxdescringlen; /* 0x30 */ + u32 reserved_3[12]; + u32 status; /* 0x60 */ +}; + +#define DW_DMA_CH0_BASE_OFFSET (0x1100) + +/* DMA control definitions */ +#define PBLX8 (1 << 16) + +/* DMA TX control definitions */ +#define TXST (1 << 0) + +#define TXPBLSHIFT (16) +#define TXPBLMASK (0x3F << 16) + +/* DMA RX control definitions */ +#define RXST (1 << 0) + +#define RXPBLSHIFT (16) +#define RBSZSHIFT (1) +#define RXPBLMASK (0x3F << 16) +#define RBSZMASK (0x7FFF << 1) + +/* Descriptior related definitions */ +#define MAC_MAX_FRAME_SZ (1600) + +struct dmamacdescr { + u32 des0; + u32 des1; + u32 des2; + u32 des3; +} __packed; + +/* + * txrx_status definitions + */ + +/* tx status bits definitions */ +/* des2 */ +#define DESC_TXSTS_TXINT (1 << 31) + +/* des3 */ +#define DESC_TXSTS_OWNBYDMA (1 << 31) +#define DESC_TXSTS_CTXT (1 << 30) +#define DESC_TXSTS_TXFIRST (1 << 29) +#define DESC_TXSTS_TXLAST (1 << 28) +#define DESC_TXSTS_LENMASK (0x1FFF << 0) + +/* rx status bits definitions */ +/* des3 */ +#define DESC_RXSTS_OWNBYDMA (1 << 31) +#define DESC_RXSTS_CTXT (1 << 30) +#define DESC_RXSTS_RXFIRST (1 << 29) +#define DESC_RXSTS_RXLAST (1 << 28) +#define DESC_RXSTS_BUF1V (1 << 24) +#define DESC_RXSTS_ERROR (1 << 15) +#define DESC_RXSTS_FRMLENMSK (0x7FFF << 0) + +/* + * dmamac_cntl definitions + */ + +struct dw_qos_eth_dev { + struct dmamacdescr tx_mac_descrtable[CONFIG_TX_DESCR_NUM]; + struct dmamacdescr rx_mac_descrtable[CONFIG_RX_DESCR_NUM]; + char txbuffs[TX_TOTAL_BUFSIZE] __aligned(ARCH_DMA_MINALIGN); + char rxbuffs[RX_TOTAL_BUFSIZE] __aligned(ARCH_DMA_MINALIGN); + + u32 interface; + u32 max_speed; + u32 tx_currdescnum; + u32 rx_currdescnum; + + struct eth_mac_regs *mac_regs_p; + struct eth_dma_regs *dma_regs_p; + struct eth_dma_ch0_regs *dma_ch0_regs_p; + struct eth_mtl_q0_regs *mtl_q0_regs_p; +#ifndef CONFIG_DM_ETH + struct eth_device *dev; +#endif +#ifdef CONFIG_DM_GPIO + struct gpio_desc reset_gpio; +#endif + + struct phy_device *phydev; + struct mii_dev *bus; +}; + +#ifdef CONFIG_DM_ETH +struct dw_qos_eth_pdata { + struct eth_pdata eth_pdata; + u32 reset_delays[3]; +}; +#endif + +#endif