diff options
Diffstat (limited to 'drivers/net/zynq_gem.c')
| -rw-r--r-- | drivers/net/zynq_gem.c | 314 |
1 files changed, 175 insertions, 139 deletions
diff --git a/drivers/net/zynq_gem.c b/drivers/net/zynq_gem.c index 858093f0d7..0a41281e90 100644 --- a/drivers/net/zynq_gem.c +++ b/drivers/net/zynq_gem.c @@ -10,11 +10,11 @@ */ #include <common.h> +#include <dm.h> #include <net.h> #include <netdev.h> #include <config.h> -#include <fdtdec.h> -#include <libfdt.h> +#include <console.h> #include <malloc.h> #include <asm/io.h> #include <phy.h> @@ -25,6 +25,8 @@ #include <asm/arch/sys_proto.h> #include <asm-generic/errno.h> +DECLARE_GLOBAL_DATA_PTR; + #if !defined(CONFIG_PHYLIB) # error XILINX_GEM_ETHERNET requires PHYLIB #endif @@ -167,14 +169,14 @@ struct zynq_gem_priv { int phyaddr; u32 emio; int init; + struct zynq_gem_regs *iobase; phy_interface_t interface; struct phy_device *phydev; struct mii_dev *bus; }; -static inline int mdio_wait(struct eth_device *dev) +static inline int mdio_wait(struct zynq_gem_regs *regs) { - struct zynq_gem_regs *regs = (struct zynq_gem_regs *)dev->iobase; u32 timeout = 20000; /* Wait till MDIO interface is ready to accept a new transaction. */ @@ -192,13 +194,13 @@ static inline int mdio_wait(struct eth_device *dev) return 0; } -static u32 phy_setup_op(struct eth_device *dev, u32 phy_addr, u32 regnum, - u32 op, u16 *data) +static u32 phy_setup_op(struct zynq_gem_priv *priv, u32 phy_addr, u32 regnum, + u32 op, u16 *data) { u32 mgtcr; - struct zynq_gem_regs *regs = (struct zynq_gem_regs *)dev->iobase; + struct zynq_gem_regs *regs = priv->iobase; - if (mdio_wait(dev)) + if (mdio_wait(regs)) return 1; /* Construct mgtcr mask for the operation */ @@ -209,7 +211,7 @@ static u32 phy_setup_op(struct eth_device *dev, u32 phy_addr, u32 regnum, /* Write mgtcr and wait for completion */ writel(mgtcr, ®s->phymntnc); - if (mdio_wait(dev)) + if (mdio_wait(regs)) return 1; if (op == ZYNQ_GEM_PHYMNTNC_OP_R_MASK) @@ -218,12 +220,13 @@ static u32 phy_setup_op(struct eth_device *dev, u32 phy_addr, u32 regnum, return 0; } -static u32 phyread(struct eth_device *dev, u32 phy_addr, u32 regnum, u16 *val) +static u32 phyread(struct zynq_gem_priv *priv, u32 phy_addr, + u32 regnum, u16 *val) { u32 ret; - ret = phy_setup_op(dev, phy_addr, regnum, - ZYNQ_GEM_PHYMNTNC_OP_R_MASK, val); + 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__, @@ -232,29 +235,30 @@ static u32 phyread(struct eth_device *dev, u32 phy_addr, u32 regnum, u16 *val) return ret; } -static u32 phywrite(struct eth_device *dev, u32 phy_addr, u32 regnum, u16 data) +static u32 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(dev, phy_addr, regnum, - ZYNQ_GEM_PHYMNTNC_OP_W_MASK, &data); + return phy_setup_op(priv, phy_addr, regnum, + ZYNQ_GEM_PHYMNTNC_OP_W_MASK, &data); } -static void phy_detection(struct eth_device *dev) +static int phy_detection(struct udevice *dev) { int i; u16 phyreg; struct zynq_gem_priv *priv = dev->priv; if (priv->phyaddr != -1) { - phyread(dev, priv->phyaddr, PHY_DETECT_REG, &phyreg); + phyread(priv, priv->phyaddr, PHY_DETECT_REG, &phyreg); if ((phyreg != 0xFFFF) && ((phyreg & PHY_DETECT_MASK) == PHY_DETECT_MASK)) { /* Found a valid PHY address */ debug("Default phy address %d is valid\n", priv->phyaddr); - return; + return 0; } else { debug("PHY address is not setup correctly %d\n", priv->phyaddr); @@ -266,33 +270,36 @@ static void phy_detection(struct eth_device *dev) if (priv->phyaddr == -1) { /* detect the PHY address */ for (i = 31; i >= 0; i--) { - phyread(dev, i, PHY_DETECT_REG, &phyreg); + phyread(priv, i, PHY_DETECT_REG, &phyreg); if ((phyreg != 0xFFFF) && ((phyreg & PHY_DETECT_MASK) == PHY_DETECT_MASK)) { /* Found a valid PHY address */ priv->phyaddr = i; debug("Found valid phy address, %d\n", i); - return; + return 0; } } } printf("PHY is not detected\n"); + return -1; } -static int zynq_gem_setup_mac(struct eth_device *dev) +static int zynq_gem_setup_mac(struct udevice *dev) { u32 i, macaddrlow, macaddrhigh; - struct zynq_gem_regs *regs = (struct zynq_gem_regs *)dev->iobase; + struct eth_pdata *pdata = dev_get_platdata(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 = dev->enetaddr[0]; - macaddrlow |= dev->enetaddr[1] << 8; - macaddrlow |= dev->enetaddr[2] << 16; - macaddrlow |= dev->enetaddr[3] << 24; + 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 = dev->enetaddr[4]; - macaddrhigh |= dev->enetaddr[5] << 8; + macaddrhigh = pdata->enetaddr[4]; + macaddrhigh |= pdata->enetaddr[5] << 8; for (i = 0; i < 4; i++) { writel(0, ®s->laddr[i][LADDR_LOW]); @@ -307,15 +314,11 @@ static int zynq_gem_setup_mac(struct eth_device *dev) return 0; } -static int zynq_gem_init(struct eth_device *dev, bd_t * bis) +static int zynq_phy_init(struct udevice *dev) { - u32 i; - unsigned long clk_rate = 0; - struct phy_device *phydev; - struct zynq_gem_regs *regs = (struct zynq_gem_regs *)dev->iobase; - struct zynq_gem_priv *priv = dev->priv; - 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]; + int ret; + struct zynq_gem_priv *priv = dev_get_priv(dev); + struct zynq_gem_regs *regs = priv->iobase; const u32 supported = SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full | SUPPORTED_100baseT_Half | @@ -323,6 +326,37 @@ static int zynq_gem_init(struct eth_device *dev, bd_t * bis) SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full; + /* Enable only MDIO bus */ + writel(ZYNQ_GEM_NWCTRL_MDEN_MASK, ®s->nwctrl); + + ret = phy_detection(dev); + if (ret) { + printf("GEM PHY init failed\n"); + return ret; + } + + priv->phydev = phy_connect(priv->bus, priv->phyaddr, dev, + priv->interface); + if (!priv->phydev) + return -ENODEV; + + priv->phydev->supported = supported | ADVERTISED_Pause | + ADVERTISED_Asym_Pause; + priv->phydev->advertising = priv->phydev->supported; + phy_config(priv->phydev); + + return 0; +} + +static int zynq_gem_init(struct udevice *dev) +{ + u32 i; + unsigned long clk_rate = 0; + struct zynq_gem_priv *priv = dev_get_priv(dev); + struct zynq_gem_regs *regs = priv->iobase; + 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 (!priv->init) { /* Disable all interrupts */ writel(0xFFFFFFFF, ®s->idr); @@ -384,25 +418,14 @@ static int zynq_gem_init(struct eth_device *dev, bd_t * bis) priv->init++; } - phy_detection(dev); - - /* interface - look at tsec */ - phydev = phy_connect(priv->bus, priv->phyaddr, dev, - priv->interface); - - phydev->supported = supported | ADVERTISED_Pause | - ADVERTISED_Asym_Pause; - phydev->advertising = phydev->supported; - priv->phydev = phydev; - phy_config(phydev); - phy_startup(phydev); + phy_startup(priv->phydev); - if (!phydev->link) { - printf("%s: No link.\n", phydev->dev->name); + if (!priv->phydev->link) { + printf("%s: No link.\n", priv->phydev->dev->name); return -1; } - switch (phydev->speed) { + switch (priv->phydev->speed) { case SPEED_1000: writel(ZYNQ_GEM_NWCFG_INIT | ZYNQ_GEM_NWCFG_SPEED1000, ®s->nwcfg); @@ -420,7 +443,7 @@ static int zynq_gem_init(struct eth_device *dev, bd_t * bis) /* Change the rclk and clk only not using EMIO interface */ if (!priv->emio) - zynq_slcr_gem_clk_setup(dev->iobase != + zynq_slcr_gem_clk_setup((ulong)priv->iobase != ZYNQ_GEM_BASEADDR0, clk_rate); setbits_le32(®s->nwctrl, ZYNQ_GEM_NWCTRL_RXEN_MASK | @@ -447,6 +470,11 @@ static int wait_for_bit(const char *func, u32 *reg, const u32 mask, if (get_timer(start) > timeout) break; + if (ctrlc()) { + puts("Abort\n"); + return -EINTR; + } + udelay(1); } @@ -456,11 +484,11 @@ static int wait_for_bit(const char *func, u32 *reg, const u32 mask, return -ETIMEDOUT; } -static int zynq_gem_send(struct eth_device *dev, void *ptr, int len) +static int zynq_gem_send(struct udevice *dev, void *ptr, int len) { u32 addr, size; - struct zynq_gem_priv *priv = dev->priv; - struct zynq_gem_regs *regs = (struct zynq_gem_regs *)dev->iobase; + 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 */ @@ -501,10 +529,10 @@ static int zynq_gem_send(struct eth_device *dev, void *ptr, int len) } /* Do not check frame_recd flag in rx_status register 0x20 - just poll BD */ -static int zynq_gem_recv(struct eth_device *dev) +static int zynq_gem_recv(struct udevice *dev, int flags, uchar **packetp) { int frame_len; - struct zynq_gem_priv *priv = dev->priv; + 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; @@ -544,51 +572,41 @@ static int zynq_gem_recv(struct eth_device *dev) return frame_len; } -static void zynq_gem_halt(struct eth_device *dev) +static void zynq_gem_halt(struct udevice *dev) { - struct zynq_gem_regs *regs = (struct zynq_gem_regs *)dev->iobase; + 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); } -static int zynq_gem_miiphyread(const char *devname, uchar addr, - uchar reg, ushort *val) +static int zynq_gem_miiphy_read(struct mii_dev *bus, int addr, + int devad, int reg) { - struct eth_device *dev = eth_get_dev(); + struct zynq_gem_priv *priv = bus->priv; int ret; + u16 val; - ret = phyread(dev, addr, reg, val); - debug("%s 0x%x, 0x%x, 0x%x\n", __func__, addr, reg, *val); - return ret; + 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(const char *devname, uchar addr, - uchar reg, ushort val) +static int zynq_gem_miiphy_write(struct mii_dev *bus, int addr, int devad, + int reg, u16 value) { - struct eth_device *dev = eth_get_dev(); + struct zynq_gem_priv *priv = bus->priv; - debug("%s 0x%x, 0x%x, 0x%x\n", __func__, addr, reg, val); - return phywrite(dev, addr, reg, val); + debug("%s 0x%x, 0x%x, 0x%x\n", __func__, addr, reg, value); + return phywrite(priv, addr, reg, value); } -int zynq_gem_initialize(bd_t *bis, phys_addr_t base_addr, - int phy_addr, u32 emio) +static int zynq_gem_probe(struct udevice *dev) { - struct eth_device *dev; - struct zynq_gem_priv *priv; void *bd_space; - - dev = calloc(1, sizeof(*dev)); - if (dev == NULL) - return -1; - - dev->priv = calloc(1, sizeof(struct zynq_gem_priv)); - if (dev->priv == NULL) { - free(dev); - return -1; - } - priv = dev->priv; + struct zynq_gem_priv *priv = dev_get_priv(dev); + int ret; /* Align rxbuffers to ARCH_DMA_MINALIGN */ priv->rxbuffers = memalign(ARCH_DMA_MINALIGN, RX_BUF * PKTSIZE_ALIGN); @@ -603,69 +621,87 @@ int zynq_gem_initialize(bd_t *bis, phys_addr_t base_addr, priv->tx_bd = (struct emac_bd *)bd_space; priv->rx_bd = (struct emac_bd *)((ulong)bd_space + BD_SEPRN_SPACE); - priv->phyaddr = phy_addr; - priv->emio = emio; - -#ifndef CONFIG_ZYNQ_GEM_INTERFACE - priv->interface = PHY_INTERFACE_MODE_MII; -#else - priv->interface = CONFIG_ZYNQ_GEM_INTERFACE; -#endif + priv->bus = mdio_alloc(); + priv->bus->read = zynq_gem_miiphy_read; + priv->bus->write = zynq_gem_miiphy_write; + priv->bus->priv = priv; + strcpy(priv->bus->name, "gem"); - sprintf(dev->name, "Gem.%lx", base_addr); + ret = mdio_register(priv->bus); + if (ret) + return ret; - dev->iobase = base_addr; + zynq_phy_init(dev); - dev->init = zynq_gem_init; - dev->halt = zynq_gem_halt; - dev->send = zynq_gem_send; - dev->recv = zynq_gem_recv; - dev->write_hwaddr = zynq_gem_setup_mac; + return 0; +} - eth_register(dev); +static int zynq_gem_remove(struct udevice *dev) +{ + struct zynq_gem_priv *priv = dev_get_priv(dev); - miiphy_register(dev->name, zynq_gem_miiphyread, zynq_gem_miiphy_write); - priv->bus = miiphy_get_dev_by_name(dev->name); + free(priv->phydev); + mdio_unregister(priv->bus); + mdio_free(priv->bus); - return 1; + return 0; } -#if CONFIG_IS_ENABLED(OF_CONTROL) -int zynq_gem_of_init(const void *blob) +static const struct eth_ops zynq_gem_ops = { + .start = zynq_gem_init, + .send = zynq_gem_send, + .recv = zynq_gem_recv, + .stop = zynq_gem_halt, + .write_hwaddr = zynq_gem_setup_mac, +}; + +static int zynq_gem_ofdata_to_platdata(struct udevice *dev) { + struct eth_pdata *pdata = dev_get_platdata(dev); + struct zynq_gem_priv *priv = dev_get_priv(dev); int offset = 0; - u32 ret = 0; - u32 reg, phy_reg; - - debug("ZYNQ GEM: Initialization\n"); - - do { - offset = fdt_node_offset_by_compatible(blob, offset, - "xlnx,ps7-ethernet-1.00.a"); - if (offset != -1) { - reg = fdtdec_get_addr(blob, offset, "reg"); - if (reg != FDT_ADDR_T_NONE) { - offset = fdtdec_lookup_phandle(blob, offset, - "phy-handle"); - if (offset != -1) - phy_reg = fdtdec_get_addr(blob, offset, - "reg"); - else - phy_reg = 0; - - debug("ZYNQ GEM: addr %x, phyaddr %x\n", - reg, phy_reg); - - ret |= zynq_gem_initialize(NULL, reg, - phy_reg, 0); - - } else { - debug("ZYNQ GEM: Can't get base address\n"); - return -1; - } - } - } while (offset != -1); + const char *phy_mode; + + pdata->iobase = (phys_addr_t)dev_get_addr(dev); + priv->iobase = (struct zynq_gem_regs *)pdata->iobase; + /* Hardcode for now */ + priv->emio = 0; + + offset = fdtdec_lookup_phandle(gd->fdt_blob, dev->of_offset, + "phy-handle"); + if (offset > 0) + priv->phyaddr = fdtdec_get_int(gd->fdt_blob, offset, "reg", 0); + + 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; + } + priv->interface = pdata->phy_interface; - return ret; + printf("ZYNQ GEM: %lx, phyaddr %d, interface %s\n", (ulong)priv->iobase, + priv->phyaddr, phy_string_for_interface(priv->interface)); + + return 0; } -#endif + +static const struct udevice_id zynq_gem_ids[] = { + { .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, + .ofdata_to_platdata = zynq_gem_ofdata_to_platdata, + .probe = zynq_gem_probe, + .remove = zynq_gem_remove, + .ops = &zynq_gem_ops, + .priv_auto_alloc_size = sizeof(struct zynq_gem_priv), + .platdata_auto_alloc_size = sizeof(struct eth_pdata), +}; |