// SPDX-License-Identifier: GPL-2.0+ /* * (C) Copyright 2011 Michal Simek * * Michal SIMEK <monstr@monstr.eu> * * Based on Xilinx gmac driver: * (C) Copyright 2011 Xilinx */ #include <clk.h> #include <common.h> #include <cpu_func.h> #include <dm.h> #include <generic-phy.h> #include <log.h> #include <net.h> #include <netdev.h> #include <config.h> #include <console.h> #include <malloc.h> #include <asm/cache.h> #include <asm/io.h> #include <phy.h> #include <reset.h> #include <miiphy.h> #include <wait_bit.h> #include <watchdog.h> #include <asm/system.h> #include <asm/arch/hardware.h> #include <asm/arch/sys_proto.h> #include <dm/device_compat.h> #include <linux/bitops.h> #include <linux/err.h> #include <linux/errno.h> #include <eth_phy.h> #include <zynqmp_firmware.h> /* Bit/mask specification */ #define ZYNQ_GEM_PHYMNTNC_OP_MASK 0x40020000 /* operation mask bits */ #define ZYNQ_GEM_PHYMNTNC_OP_R_MASK 0x20000000 /* read operation */ #define ZYNQ_GEM_PHYMNTNC_OP_W_MASK 0x10000000 /* write operation */ #define ZYNQ_GEM_PHYMNTNC_PHYAD_SHIFT_MASK 23 /* Shift bits for PHYAD */ #define ZYNQ_GEM_PHYMNTNC_PHREG_SHIFT_MASK 18 /* Shift bits for PHREG */ #define ZYNQ_GEM_RXBUF_EOF_MASK 0x00008000 /* End of frame. */ #define ZYNQ_GEM_RXBUF_SOF_MASK 0x00004000 /* Start of frame. */ #define ZYNQ_GEM_RXBUF_LEN_MASK 0x00003FFF /* Mask for length field */ #define ZYNQ_GEM_RXBUF_WRAP_MASK 0x00000002 /* Wrap bit, last BD */ #define ZYNQ_GEM_RXBUF_NEW_MASK 0x00000001 /* Used bit.. */ #define ZYNQ_GEM_RXBUF_ADD_MASK 0xFFFFFFFC /* Mask for address */ /* Wrap bit, last descriptor */ #define ZYNQ_GEM_TXBUF_WRAP_MASK 0x40000000 #define ZYNQ_GEM_TXBUF_LAST_MASK 0x00008000 /* Last buffer */ #define ZYNQ_GEM_TXBUF_USED_MASK 0x80000000 /* Used by Hw */ #define ZYNQ_GEM_NWCTRL_TXEN_MASK 0x00000008 /* Enable transmit */ #define ZYNQ_GEM_NWCTRL_RXEN_MASK 0x00000004 /* Enable receive */ #define ZYNQ_GEM_NWCTRL_MDEN_MASK 0x00000010 /* Enable MDIO port */ #define ZYNQ_GEM_NWCTRL_STARTTX_MASK 0x00000200 /* Start tx (tx_go) */ #define ZYNQ_GEM_NWCFG_SPEED100 0x00000001 /* 100 Mbps operation */ #define ZYNQ_GEM_NWCFG_SPEED1000 0x00000400 /* 1Gbps operation */ #define ZYNQ_GEM_NWCFG_FDEN 0x00000002 /* Full Duplex mode */ #define ZYNQ_GEM_NWCFG_FSREM 0x00020000 /* FCS removal */ #define ZYNQ_GEM_NWCFG_SGMII_ENBL 0x08000000 /* SGMII Enable */ #define ZYNQ_GEM_NWCFG_PCS_SEL 0x00000800 /* PCS select */ #ifdef CONFIG_ARM64 #define ZYNQ_GEM_NWCFG_MDCCLKDIV 0x00100000 /* Div pclk by 64, max 160MHz */ #else #define ZYNQ_GEM_NWCFG_MDCCLKDIV 0x000c0000 /* Div pclk by 48, max 120MHz */ #endif #ifdef CONFIG_ARM64 # define ZYNQ_GEM_DBUS_WIDTH (1 << 21) /* 64 bit bus */ #else # define ZYNQ_GEM_DBUS_WIDTH (0 << 21) /* 32 bit bus */ #endif #define ZYNQ_GEM_NWCFG_INIT (ZYNQ_GEM_DBUS_WIDTH | \ ZYNQ_GEM_NWCFG_FDEN | \ ZYNQ_GEM_NWCFG_FSREM | \ ZYNQ_GEM_NWCFG_MDCCLKDIV) #define ZYNQ_GEM_NWSR_MDIOIDLE_MASK 0x00000004 /* PHY management idle */ #define ZYNQ_GEM_DMACR_BLENGTH 0x00000004 /* INCR4 AHB bursts */ /* Use full configured addressable space (8 Kb) */ #define ZYNQ_GEM_DMACR_RXSIZE 0x00000300 /* Use full configured addressable space (4 Kb) */ #define ZYNQ_GEM_DMACR_TXSIZE 0x00000400 /* Set with binary 00011000 to use 1536 byte(1*max length frame/buffer) */ #define ZYNQ_GEM_DMACR_RXBUF 0x00180000 #if defined(CONFIG_PHYS_64BIT) # define ZYNQ_GEM_DMA_BUS_WIDTH BIT(30) /* 64 bit bus */ #else # define ZYNQ_GEM_DMA_BUS_WIDTH (0 << 30) /* 32 bit bus */ #endif #define ZYNQ_GEM_DMACR_INIT (ZYNQ_GEM_DMACR_BLENGTH | \ ZYNQ_GEM_DMACR_RXSIZE | \ ZYNQ_GEM_DMACR_TXSIZE | \ ZYNQ_GEM_DMACR_RXBUF | \ ZYNQ_GEM_DMA_BUS_WIDTH) #define ZYNQ_GEM_TSR_DONE 0x00000020 /* Tx done mask */ #define ZYNQ_GEM_PCS_CTL_ANEG_ENBL 0x1000 #define ZYNQ_GEM_DCFG_DBG6_DMA_64B BIT(23) #define MDIO_IDLE_TIMEOUT_MS 100 /* Use MII register 1 (MII status register) to detect PHY */ #define PHY_DETECT_REG 1 /* Mask used to verify certain PHY features (or register contents) * in the register above: * 0x1000: 10Mbps full duplex support * 0x0800: 10Mbps half duplex support * 0x0008: Auto-negotiation support */ #define PHY_DETECT_MASK 0x1808 /* TX BD status masks */ #define ZYNQ_GEM_TXBUF_FRMLEN_MASK 0x000007ff #define ZYNQ_GEM_TXBUF_EXHAUSTED 0x08000000 #define ZYNQ_GEM_TXBUF_UNDERRUN 0x10000000 /* Clock frequencies for different speeds */ #define ZYNQ_GEM_FREQUENCY_10 2500000UL #define ZYNQ_GEM_FREQUENCY_100 25000000UL #define ZYNQ_GEM_FREQUENCY_1000 125000000UL #define RXCLK_EN BIT(0) /* Device registers */ struct zynq_gem_regs { u32 nwctrl; /* 0x0 - Network Control reg */ u32 nwcfg; /* 0x4 - Network Config reg */ u32 nwsr; /* 0x8 - Network Status reg */ u32 reserved1; u32 dmacr; /* 0x10 - DMA Control reg */ u32 txsr; /* 0x14 - TX Status reg */ u32 rxqbase; /* 0x18 - RX Q Base address reg */ u32 txqbase; /* 0x1c - TX Q Base address reg */ u32 rxsr; /* 0x20 - RX Status reg */ u32 reserved2[2]; u32 idr; /* 0x2c - Interrupt Disable reg */ u32 reserved3; u32 phymntnc; /* 0x34 - Phy Maintaince reg */ u32 reserved4[18]; u32 hashl; /* 0x80 - Hash Low address reg */ u32 hashh; /* 0x84 - Hash High address reg */ #define LADDR_LOW 0 #define LADDR_HIGH 1 u32 laddr[4][LADDR_HIGH + 1]; /* 0x8c - Specific1 addr low/high reg */ u32 match[4]; /* 0xa8 - Type ID1 Match reg */ u32 reserved6[18]; #define STAT_SIZE 44 u32 stat[STAT_SIZE]; /* 0x100 - Octects transmitted Low reg */ u32 reserved9[20]; u32 pcscntrl; u32 rserved12[36]; u32 dcfg6; /* 0x294 Design config reg6 */ u32 reserved7[106]; u32 transmit_q1_ptr; /* 0x440 - Transmit priority queue 1 */ u32 reserved8[15]; u32 receive_q1_ptr; /* 0x480 - Receive priority queue 1 */ u32 reserved10[17]; u32 upper_txqbase; /* 0x4C8 - Upper tx_q base addr */ u32 reserved11[2]; u32 upper_rxqbase; /* 0x4D4 - Upper rx_q base addr */ }; /* BD descriptors */ struct emac_bd { u32 addr; /* Next descriptor pointer */ u32 status; #if defined(CONFIG_PHYS_64BIT) u32 addr_hi; u32 reserved; #endif }; /* Reduce amount of BUFs if you have limited amount of memory */ #define RX_BUF 32 /* Page table entries are set to 1MB, or multiples of 1MB * (not < 1MB). driver uses less bd's so use 1MB bdspace. */ #define BD_SPACE 0x100000 /* BD separation space */ #define BD_SEPRN_SPACE (RX_BUF * sizeof(struct emac_bd)) /* Setup the first free TX descriptor */ #define TX_FREE_DESC 2 /* Initialized, rxbd_current, rx_first_buf must be 0 after init */ struct zynq_gem_priv { struct emac_bd *tx_bd; struct emac_bd *rx_bd; char *rxbuffers; u32 rxbd_current; u32 rx_first_buf; int phyaddr; int init; struct zynq_gem_regs *iobase; struct zynq_gem_regs *mdiobase; phy_interface_t interface; struct phy_device *phydev; ofnode phy_of_node; struct mii_dev *bus; struct clk rx_clk; struct clk tx_clk; u32 max_speed; bool int_pcs; bool dma_64bit; u32 clk_en_info; struct reset_ctl_bulk resets; }; static int phy_setup_op(struct zynq_gem_priv *priv, u32 phy_addr, u32 regnum, u32 op, u16 *data) { u32 mgtcr; struct zynq_gem_regs *regs = priv->mdiobase; int err; err = wait_for_bit_le32(®s->nwsr, ZYNQ_GEM_NWSR_MDIOIDLE_MASK, true, MDIO_IDLE_TIMEOUT_MS, false); if (err) return err; /* Construct mgtcr mask for the operation */ mgtcr = ZYNQ_GEM_PHYMNTNC_OP_MASK | op | (phy_addr << ZYNQ_GEM_PHYMNTNC_PHYAD_SHIFT_MASK) | (regnum << ZYNQ_GEM_PHYMNTNC_PHREG_SHIFT_MASK) | *data; /* Write mgtcr and wait for completion */ writel(mgtcr, ®s->phymntnc); err = wait_for_bit_le32(®s->nwsr, ZYNQ_GEM_NWSR_MDIOIDLE_MASK, true, MDIO_IDLE_TIMEOUT_MS, false); if (err) return err; if (op == ZYNQ_GEM_PHYMNTNC_OP_R_MASK) *data = readl(®s->phymntnc); return 0; } static int phyread(struct zynq_gem_priv *priv, u32 phy_addr, u32 regnum, u16 *val) { int ret; ret = phy_setup_op(priv, phy_addr, regnum, ZYNQ_GEM_PHYMNTNC_OP_R_MASK, val); if (!ret) debug("%s: phy_addr %d, regnum 0x%x, val 0x%x\n", __func__, phy_addr, regnum, *val); return ret; } static int phywrite(struct zynq_gem_priv *priv, u32 phy_addr, u32 regnum, u16 data) { debug("%s: phy_addr %d, regnum 0x%x, data 0x%x\n", __func__, phy_addr, regnum, data); return phy_setup_op(priv, phy_addr, regnum, ZYNQ_GEM_PHYMNTNC_OP_W_MASK, &data); } static int zynq_gem_setup_mac(struct udevice *dev) { u32 i, macaddrlow, macaddrhigh; struct eth_pdata *pdata = dev_get_plat(dev); struct zynq_gem_priv *priv = dev_get_priv(dev); struct zynq_gem_regs *regs = priv->iobase; /* Set the MAC bits [31:0] in BOT */ macaddrlow = pdata->enetaddr[0]; macaddrlow |= pdata->enetaddr[1] << 8; macaddrlow |= pdata->enetaddr[2] << 16; macaddrlow |= pdata->enetaddr[3] << 24; /* Set MAC bits [47:32] in TOP */ macaddrhigh = pdata->enetaddr[4]; macaddrhigh |= pdata->enetaddr[5] << 8; for (i = 0; i < 4; i++) { writel(0, ®s->laddr[i][LADDR_LOW]); writel(0, ®s->laddr[i][LADDR_HIGH]); /* Do not use MATCHx register */ writel(0, ®s->match[i]); } writel(macaddrlow, ®s->laddr[0][LADDR_LOW]); writel(macaddrhigh, ®s->laddr[0][LADDR_HIGH]); return 0; } static int zynq_phy_init(struct udevice *dev) { int ret; struct zynq_gem_priv *priv = dev_get_priv(dev); struct zynq_gem_regs *regs_mdio = priv->mdiobase; const u32 supported = SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full | SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full | SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full; /* Enable only MDIO bus */ writel(ZYNQ_GEM_NWCTRL_MDEN_MASK, ®s_mdio->nwctrl); if (IS_ENABLED(CONFIG_DM_ETH_PHY)) priv->phyaddr = eth_phy_get_addr(dev); priv->phydev = phy_connect(priv->bus, priv->phyaddr, dev, priv->interface); if (!priv->phydev) return -ENODEV; if (priv->max_speed) { ret = phy_set_supported(priv->phydev, priv->max_speed); if (ret) return ret; } priv->phydev->supported &= supported | ADVERTISED_Pause | ADVERTISED_Asym_Pause; priv->phydev->advertising = priv->phydev->supported; if (!ofnode_valid(priv->phydev->node)) priv->phydev->node = priv->phy_of_node; return phy_config(priv->phydev); } static int zynq_gem_init(struct udevice *dev) { u32 i, nwconfig; int ret; unsigned long clk_rate = 0; struct zynq_gem_priv *priv = dev_get_priv(dev); struct zynq_gem_regs *regs = priv->iobase; struct zynq_gem_regs *regs_mdio = priv->mdiobase; struct emac_bd *dummy_tx_bd = &priv->tx_bd[TX_FREE_DESC]; struct emac_bd *dummy_rx_bd = &priv->tx_bd[TX_FREE_DESC + 2]; if (readl(®s->dcfg6) & ZYNQ_GEM_DCFG_DBG6_DMA_64B) priv->dma_64bit = true; else priv->dma_64bit = false; #if defined(CONFIG_PHYS_64BIT) if (!priv->dma_64bit) { printf("ERR: %s: Using 64-bit DMA but HW doesn't support it\n", __func__); return -EINVAL; } #else if (priv->dma_64bit) debug("WARN: %s: Not using 64-bit dma even HW supports it\n", __func__); #endif if (!priv->init) { /* Disable all interrupts */ writel(0xFFFFFFFF, ®s->idr); /* Disable the receiver & transmitter */ writel(0, ®s->nwctrl); writel(0, ®s->txsr); writel(0, ®s->rxsr); writel(0, ®s->phymntnc); /* Clear the Hash registers for the mac address * pointed by AddressPtr */ writel(0x0, ®s->hashl); /* Write bits [63:32] in TOP */ writel(0x0, ®s->hashh); /* Clear all counters */ for (i = 0; i < STAT_SIZE; i++) readl(®s->stat[i]); /* Setup RxBD space */ memset(priv->rx_bd, 0, RX_BUF * sizeof(struct emac_bd)); for (i = 0; i < RX_BUF; i++) { priv->rx_bd[i].status = 0xF0000000; priv->rx_bd[i].addr = (lower_32_bits((ulong)(priv->rxbuffers) + (i * PKTSIZE_ALIGN))); #if defined(CONFIG_PHYS_64BIT) priv->rx_bd[i].addr_hi = (upper_32_bits((ulong)(priv->rxbuffers) + (i * PKTSIZE_ALIGN))); #endif } /* WRAP bit to last BD */ priv->rx_bd[--i].addr |= ZYNQ_GEM_RXBUF_WRAP_MASK; /* Write RxBDs to IP */ writel(lower_32_bits((ulong)priv->rx_bd), ®s->rxqbase); #if defined(CONFIG_PHYS_64BIT) writel(upper_32_bits((ulong)priv->rx_bd), ®s->upper_rxqbase); #endif /* Setup for DMA Configuration register */ writel(ZYNQ_GEM_DMACR_INIT, ®s->dmacr); /* Setup for Network Control register, MDIO, Rx and Tx enable */ setbits_le32(®s_mdio->nwctrl, ZYNQ_GEM_NWCTRL_MDEN_MASK); /* Disable the second priority queue */ dummy_tx_bd->addr = 0; #if defined(CONFIG_PHYS_64BIT) dummy_tx_bd->addr_hi = 0; #endif dummy_tx_bd->status = ZYNQ_GEM_TXBUF_WRAP_MASK | ZYNQ_GEM_TXBUF_LAST_MASK| ZYNQ_GEM_TXBUF_USED_MASK; dummy_rx_bd->addr = ZYNQ_GEM_RXBUF_WRAP_MASK | ZYNQ_GEM_RXBUF_NEW_MASK; #if defined(CONFIG_PHYS_64BIT) dummy_rx_bd->addr_hi = 0; #endif dummy_rx_bd->status = 0; writel((ulong)dummy_tx_bd, ®s->transmit_q1_ptr); writel((ulong)dummy_rx_bd, ®s->receive_q1_ptr); priv->init++; } ret = phy_startup(priv->phydev); if (ret) return ret; if (!priv->phydev->link) { printf("%s: No link.\n", priv->phydev->dev->name); return -1; } nwconfig = ZYNQ_GEM_NWCFG_INIT; /* * Set SGMII enable PCS selection only if internal PCS/PMA * core is used and interface is SGMII. */ if (priv->interface == PHY_INTERFACE_MODE_SGMII && priv->int_pcs) { nwconfig |= ZYNQ_GEM_NWCFG_SGMII_ENBL | ZYNQ_GEM_NWCFG_PCS_SEL; } switch (priv->phydev->speed) { case SPEED_1000: writel(nwconfig | ZYNQ_GEM_NWCFG_SPEED1000, ®s->nwcfg); clk_rate = ZYNQ_GEM_FREQUENCY_1000; break; case SPEED_100: writel(nwconfig | ZYNQ_GEM_NWCFG_SPEED100, ®s->nwcfg); clk_rate = ZYNQ_GEM_FREQUENCY_100; break; case SPEED_10: clk_rate = ZYNQ_GEM_FREQUENCY_10; break; } #ifdef CONFIG_ARM64 if (priv->interface == PHY_INTERFACE_MODE_SGMII && priv->int_pcs) { /* * Disable AN for fixed link configuration, enable otherwise. * Must be written after PCS_SEL is set in nwconfig, * otherwise writes will not take effect. */ if (priv->phydev->phy_id != PHY_FIXED_ID) writel(readl(®s->pcscntrl) | ZYNQ_GEM_PCS_CTL_ANEG_ENBL, ®s->pcscntrl); else writel(readl(®s->pcscntrl) & ~ZYNQ_GEM_PCS_CTL_ANEG_ENBL, ®s->pcscntrl); } #endif ret = clk_set_rate(&priv->tx_clk, clk_rate); if (IS_ERR_VALUE(ret)) { dev_err(dev, "failed to set tx clock rate\n"); return ret; } ret = clk_enable(&priv->tx_clk); if (ret) { dev_err(dev, "failed to enable tx clock\n"); return ret; } if (priv->clk_en_info & RXCLK_EN) { ret = clk_enable(&priv->rx_clk); if (ret) { dev_err(dev, "failed to enable rx clock\n"); return ret; } } setbits_le32(®s->nwctrl, ZYNQ_GEM_NWCTRL_RXEN_MASK | ZYNQ_GEM_NWCTRL_TXEN_MASK); return 0; } static int zynq_gem_send(struct udevice *dev, void *ptr, int len) { dma_addr_t addr; u32 size; struct zynq_gem_priv *priv = dev_get_priv(dev); struct zynq_gem_regs *regs = priv->iobase; struct emac_bd *current_bd = &priv->tx_bd[1]; /* Setup Tx BD */ memset(priv->tx_bd, 0, sizeof(struct emac_bd)); priv->tx_bd->addr = lower_32_bits((ulong)ptr); #if defined(CONFIG_PHYS_64BIT) priv->tx_bd->addr_hi = upper_32_bits((ulong)ptr); #endif priv->tx_bd->status = (len & ZYNQ_GEM_TXBUF_FRMLEN_MASK) | ZYNQ_GEM_TXBUF_LAST_MASK; /* Dummy descriptor to mark it as the last in descriptor chain */ current_bd->addr = 0x0; #if defined(CONFIG_PHYS_64BIT) current_bd->addr_hi = 0x0; #endif current_bd->status = ZYNQ_GEM_TXBUF_WRAP_MASK | ZYNQ_GEM_TXBUF_LAST_MASK| ZYNQ_GEM_TXBUF_USED_MASK; /* setup BD */ writel(lower_32_bits((ulong)priv->tx_bd), ®s->txqbase); #if defined(CONFIG_PHYS_64BIT) writel(upper_32_bits((ulong)priv->tx_bd), ®s->upper_txqbase); #endif addr = (ulong) ptr; addr &= ~(ARCH_DMA_MINALIGN - 1); size = roundup(len, ARCH_DMA_MINALIGN); flush_dcache_range(addr, addr + size); barrier(); /* Start transmit */ setbits_le32(®s->nwctrl, ZYNQ_GEM_NWCTRL_STARTTX_MASK); /* Read TX BD status */ if (priv->tx_bd->status & ZYNQ_GEM_TXBUF_EXHAUSTED) printf("TX buffers exhausted in mid frame\n"); return wait_for_bit_le32(®s->txsr, ZYNQ_GEM_TSR_DONE, true, 20000, true); } /* Do not check frame_recd flag in rx_status register 0x20 - just poll BD */ static int zynq_gem_recv(struct udevice *dev, int flags, uchar **packetp) { int frame_len; dma_addr_t addr; struct zynq_gem_priv *priv = dev_get_priv(dev); struct emac_bd *current_bd = &priv->rx_bd[priv->rxbd_current]; if (!(current_bd->addr & ZYNQ_GEM_RXBUF_NEW_MASK)) return -1; if (!(current_bd->status & (ZYNQ_GEM_RXBUF_SOF_MASK | ZYNQ_GEM_RXBUF_EOF_MASK))) { printf("GEM: SOF or EOF not set for last buffer received!\n"); return -1; } frame_len = current_bd->status & ZYNQ_GEM_RXBUF_LEN_MASK; if (!frame_len) { printf("%s: Zero size packet?\n", __func__); return -1; } #if defined(CONFIG_PHYS_64BIT) addr = (dma_addr_t)((current_bd->addr & ZYNQ_GEM_RXBUF_ADD_MASK) | ((dma_addr_t)current_bd->addr_hi << 32)); #else addr = current_bd->addr & ZYNQ_GEM_RXBUF_ADD_MASK; #endif addr &= ~(ARCH_DMA_MINALIGN - 1); *packetp = (uchar *)(uintptr_t)addr; invalidate_dcache_range(addr, addr + roundup(PKTSIZE_ALIGN, ARCH_DMA_MINALIGN)); barrier(); return frame_len; } static int zynq_gem_free_pkt(struct udevice *dev, uchar *packet, int length) { struct zynq_gem_priv *priv = dev_get_priv(dev); struct emac_bd *current_bd = &priv->rx_bd[priv->rxbd_current]; struct emac_bd *first_bd; dma_addr_t addr; if (current_bd->status & ZYNQ_GEM_RXBUF_SOF_MASK) { priv->rx_first_buf = priv->rxbd_current; } else { current_bd->addr &= ~ZYNQ_GEM_RXBUF_NEW_MASK; current_bd->status = 0xF0000000; /* FIXME */ } if (current_bd->status & ZYNQ_GEM_RXBUF_EOF_MASK) { first_bd = &priv->rx_bd[priv->rx_first_buf]; first_bd->addr &= ~ZYNQ_GEM_RXBUF_NEW_MASK; first_bd->status = 0xF0000000; } /* Flush the cache for the packet as well */ #if defined(CONFIG_PHYS_64BIT) addr = (dma_addr_t)((current_bd->addr & ZYNQ_GEM_RXBUF_ADD_MASK) | ((dma_addr_t)current_bd->addr_hi << 32)); #else addr = current_bd->addr & ZYNQ_GEM_RXBUF_ADD_MASK; #endif flush_dcache_range(addr, addr + roundup(PKTSIZE_ALIGN, ARCH_DMA_MINALIGN)); barrier(); if ((++priv->rxbd_current) >= RX_BUF) priv->rxbd_current = 0; return 0; } static void zynq_gem_halt(struct udevice *dev) { struct zynq_gem_priv *priv = dev_get_priv(dev); struct zynq_gem_regs *regs = priv->iobase; clrsetbits_le32(®s->nwctrl, ZYNQ_GEM_NWCTRL_RXEN_MASK | ZYNQ_GEM_NWCTRL_TXEN_MASK, 0); } __weak int zynq_board_read_rom_ethaddr(unsigned char *ethaddr) { return -ENOSYS; } static int zynq_gem_read_rom_mac(struct udevice *dev) { struct eth_pdata *pdata = dev_get_plat(dev); if (!pdata) return -ENOSYS; return zynq_board_read_rom_ethaddr(pdata->enetaddr); } static int zynq_gem_miiphy_read(struct mii_dev *bus, int addr, int devad, int reg) { struct zynq_gem_priv *priv = bus->priv; int ret; u16 val = 0; ret = phyread(priv, addr, reg, &val); debug("%s 0x%x, 0x%x, 0x%x, 0x%x\n", __func__, addr, reg, val, ret); return val; } static int zynq_gem_miiphy_write(struct mii_dev *bus, int addr, int devad, int reg, u16 value) { struct zynq_gem_priv *priv = bus->priv; debug("%s 0x%x, 0x%x, 0x%x\n", __func__, addr, reg, value); return phywrite(priv, addr, reg, value); } static int zynq_gem_reset_init(struct udevice *dev) { struct zynq_gem_priv *priv = dev_get_priv(dev); int ret; ret = reset_get_bulk(dev, &priv->resets); if (ret == -ENOTSUPP || ret == -ENOENT) return 0; else if (ret) return ret; ret = reset_deassert_bulk(&priv->resets); if (ret) { reset_release_bulk(&priv->resets); return ret; } return 0; } static int gem_zynqmp_set_dynamic_config(struct udevice *dev) { u32 pm_info[2]; int ret; if (IS_ENABLED(CONFIG_ARCH_ZYNQMP)) { if (!zynqmp_pm_is_function_supported(PM_IOCTL, IOCTL_SET_GEM_CONFIG)) { ret = ofnode_read_u32_array(dev_ofnode(dev), "power-domains", pm_info, ARRAY_SIZE(pm_info)); if (ret) { dev_err(dev, "Failed to read power-domains info\n"); return ret; } ret = zynqmp_pm_set_gem_config(pm_info[1], GEM_CONFIG_FIXED, 0); if (ret) return ret; ret = zynqmp_pm_set_gem_config(pm_info[1], GEM_CONFIG_SGMII_MODE, 1); if (ret) return ret; } } return 0; } static int zynq_gem_probe(struct udevice *dev) { void *bd_space; struct zynq_gem_priv *priv = dev_get_priv(dev); int ret; struct phy phy; if (priv->interface == PHY_INTERFACE_MODE_SGMII) { ret = generic_phy_get_by_index(dev, 0, &phy); if (!ret) { ret = generic_phy_init(&phy); if (ret) return ret; } else if (ret != -ENOENT) { debug("could not get phy (err %d)\n", ret); return ret; } } ret = zynq_gem_reset_init(dev); if (ret) return ret; /* Align rxbuffers to ARCH_DMA_MINALIGN */ priv->rxbuffers = memalign(ARCH_DMA_MINALIGN, RX_BUF * PKTSIZE_ALIGN); if (!priv->rxbuffers) return -ENOMEM; memset(priv->rxbuffers, 0, RX_BUF * PKTSIZE_ALIGN); ulong addr = (ulong)priv->rxbuffers; flush_dcache_range(addr, addr + roundup(RX_BUF * PKTSIZE_ALIGN, ARCH_DMA_MINALIGN)); barrier(); /* Align bd_space to MMU_SECTION_SHIFT */ bd_space = memalign(1 << MMU_SECTION_SHIFT, BD_SPACE); if (!bd_space) { ret = -ENOMEM; goto err1; } mmu_set_region_dcache_behaviour((phys_addr_t)bd_space, BD_SPACE, DCACHE_OFF); /* Initialize the bd spaces for tx and rx bd's */ priv->tx_bd = (struct emac_bd *)bd_space; priv->rx_bd = (struct emac_bd *)((ulong)bd_space + BD_SEPRN_SPACE); ret = clk_get_by_name(dev, "tx_clk", &priv->tx_clk); if (ret < 0) { dev_err(dev, "failed to get tx_clock\n"); goto err2; } if (priv->clk_en_info & RXCLK_EN) { ret = clk_get_by_name(dev, "rx_clk", &priv->rx_clk); if (ret < 0) { dev_err(dev, "failed to get rx_clock\n"); goto err2; } } if (IS_ENABLED(CONFIG_DM_ETH_PHY)) priv->bus = eth_phy_get_mdio_bus(dev); if (!priv->bus) { priv->bus = mdio_alloc(); priv->bus->read = zynq_gem_miiphy_read; priv->bus->write = zynq_gem_miiphy_write; priv->bus->priv = priv; ret = mdio_register_seq(priv->bus, dev_seq(dev)); if (ret) goto err2; } if (IS_ENABLED(CONFIG_DM_ETH_PHY)) eth_phy_set_mdio_bus(dev, priv->bus); ret = zynq_phy_init(dev); if (ret) goto err3; if (priv->interface == PHY_INTERFACE_MODE_SGMII && phy.dev) { if (IS_ENABLED(CONFIG_DM_ETH_PHY)) { if (device_is_compatible(dev, "cdns,zynqmp-gem")) { ret = gem_zynqmp_set_dynamic_config(dev); if (ret) { dev_err (dev, "Failed to set gem dynamic config\n"); return ret; } } } ret = generic_phy_power_on(&phy); if (ret) return ret; } printf("\nZYNQ GEM: %lx, mdio bus %lx, phyaddr %d, interface %s\n", (ulong)priv->iobase, (ulong)priv->mdiobase, priv->phydev->addr, phy_string_for_interface(priv->interface)); return ret; err3: mdio_unregister(priv->bus); err2: free(priv->tx_bd); err1: free(priv->rxbuffers); return ret; } static int zynq_gem_remove(struct udevice *dev) { struct zynq_gem_priv *priv = dev_get_priv(dev); free(priv->phydev); mdio_unregister(priv->bus); mdio_free(priv->bus); return 0; } static const struct eth_ops zynq_gem_ops = { .start = zynq_gem_init, .send = zynq_gem_send, .recv = zynq_gem_recv, .free_pkt = zynq_gem_free_pkt, .stop = zynq_gem_halt, .write_hwaddr = zynq_gem_setup_mac, .read_rom_hwaddr = zynq_gem_read_rom_mac, }; static int zynq_gem_of_to_plat(struct udevice *dev) { struct eth_pdata *pdata = dev_get_plat(dev); struct zynq_gem_priv *priv = dev_get_priv(dev); struct ofnode_phandle_args phandle_args; pdata->iobase = (phys_addr_t)dev_read_addr(dev); priv->iobase = (struct zynq_gem_regs *)pdata->iobase; priv->mdiobase = priv->iobase; /* Hardcode for now */ priv->phyaddr = -1; if (!dev_read_phandle_with_args(dev, "phy-handle", NULL, 0, 0, &phandle_args)) { fdt_addr_t addr; ofnode parent; debug("phy-handle does exist %s\n", dev->name); if (!(IS_ENABLED(CONFIG_DM_ETH_PHY))) priv->phyaddr = ofnode_read_u32_default (phandle_args.node, "reg", -1); priv->phy_of_node = phandle_args.node; priv->max_speed = ofnode_read_u32_default(phandle_args.node, "max-speed", SPEED_1000); parent = ofnode_get_parent(phandle_args.node); if (ofnode_name_eq(parent, "mdio")) parent = ofnode_get_parent(parent); addr = ofnode_get_addr(parent); if (addr != FDT_ADDR_T_NONE) { debug("MDIO bus not found %s\n", dev->name); priv->mdiobase = (struct zynq_gem_regs *)addr; } } pdata->phy_interface = dev_read_phy_mode(dev); if (pdata->phy_interface == PHY_INTERFACE_MODE_NA) return -EINVAL; priv->interface = pdata->phy_interface; priv->int_pcs = dev_read_bool(dev, "is-internal-pcspma"); priv->clk_en_info = dev_get_driver_data(dev); return 0; } static const struct udevice_id zynq_gem_ids[] = { { .compatible = "cdns,versal-gem", .data = RXCLK_EN }, { .compatible = "cdns,zynqmp-gem" }, { .compatible = "cdns,zynq-gem" }, { .compatible = "cdns,gem" }, { } }; U_BOOT_DRIVER(zynq_gem) = { .name = "zynq_gem", .id = UCLASS_ETH, .of_match = zynq_gem_ids, .of_to_plat = zynq_gem_of_to_plat, .probe = zynq_gem_probe, .remove = zynq_gem_remove, .ops = &zynq_gem_ops, .priv_auto = sizeof(struct zynq_gem_priv), .plat_auto = sizeof(struct eth_pdata), };