X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=drivers%2Fnet%2Fdesignware.c;h=d9cb5076951a9a5c5576c434a734e45bf7976c46;hb=59370f3fcd135089c402c93720a87c688abe600c;hp=fa816bf2f6c700890b513431ade043c66c81ff39;hpb=964ea7c1cea6228aa414f4aee5acf25bcd87ca21;p=oweals%2Fu-boot.git diff --git a/drivers/net/designware.c b/drivers/net/designware.c index fa816bf2f6..d9cb507695 100644 --- a/drivers/net/designware.c +++ b/drivers/net/designware.c @@ -6,10 +6,12 @@ */ /* - * Designware ethernet IP driver for u-boot + * Designware ethernet IP driver for U-Boot */ #include +#include +#include #include #include #include @@ -17,6 +19,8 @@ #include #include "designware.h" +DECLARE_GLOBAL_DATA_PTR; + #if !defined(CONFIG_PHYLIB) # error "DesignWare Ether MAC requires PHYLIB - missing CONFIG_PHYLIB" #endif @@ -40,7 +44,7 @@ static int dw_mdio_read(struct mii_dev *bus, int addr, int devad, int reg) udelay(10); }; - return -1; + return -ETIMEDOUT; } static int dw_mdio_write(struct mii_dev *bus, int addr, int devad, int reg, @@ -49,7 +53,7 @@ static int dw_mdio_write(struct mii_dev *bus, int addr, int devad, int reg, struct eth_mac_regs *mac_p = bus->priv; ulong start; u16 miiaddr; - int ret = -1, timeout = CONFIG_MDIO_TIMEOUT; + int ret = -ETIMEDOUT, timeout = CONFIG_MDIO_TIMEOUT; writel(val, &mac_p->miidata); miiaddr = ((addr << MIIADDRSHIFT) & MII_ADDRMSK) | @@ -69,27 +73,26 @@ static int dw_mdio_write(struct mii_dev *bus, int addr, int devad, int reg, return ret; } -static int dw_mdio_init(char *name, struct eth_mac_regs *mac_regs_p) +static int dw_mdio_init(const char *name, struct eth_mac_regs *mac_regs_p) { struct mii_dev *bus = mdio_alloc(); if (!bus) { printf("Failed to allocate MDIO bus\n"); - return -1; + return -ENOMEM; } bus->read = dw_mdio_read; bus->write = dw_mdio_write; - sprintf(bus->name, name); + snprintf(bus->name, sizeof(bus->name), name); bus->priv = (void *)mac_regs_p; return mdio_register(bus); } -static void tx_descs_init(struct eth_device *dev) +static void tx_descs_init(struct dw_eth_dev *priv) { - struct dw_eth_dev *priv = dev->priv; struct eth_dma_regs *dma_p = priv->dma_regs_p; struct dmamacdescr *desc_table_p = &priv->tx_mac_descrtable[0]; char *txbuffs = &priv->txbuffs[0]; @@ -128,9 +131,8 @@ static void tx_descs_init(struct eth_device *dev) priv->tx_currdescnum = 0; } -static void rx_descs_init(struct eth_device *dev) +static void rx_descs_init(struct dw_eth_dev *priv) { - struct dw_eth_dev *priv = dev->priv; struct eth_dma_regs *dma_p = priv->dma_regs_p; struct dmamacdescr *desc_table_p = &priv->rx_mac_descrtable[0]; char *rxbuffs = &priv->rxbuffs[0]; @@ -170,12 +172,10 @@ static void rx_descs_init(struct eth_device *dev) priv->rx_currdescnum = 0; } -static int dw_write_hwaddr(struct eth_device *dev) +static int _dw_write_hwaddr(struct dw_eth_dev *priv, u8 *mac_id) { - struct dw_eth_dev *priv = dev->priv; struct eth_mac_regs *mac_p = priv->mac_regs_p; u32 macid_lo, macid_hi; - u8 *mac_id = &dev->enetaddr[0]; macid_lo = mac_id[0] + (mac_id[1] << 8) + (mac_id[2] << 16) + (mac_id[3] << 24); @@ -213,9 +213,8 @@ static void dw_adjust_link(struct eth_mac_regs *mac_p, (phydev->port == PORT_FIBRE) ? ", fiber mode" : ""); } -static void dw_eth_halt(struct eth_device *dev) +static void _dw_eth_halt(struct dw_eth_dev *priv) { - struct dw_eth_dev *priv = dev->priv; struct eth_mac_regs *mac_p = priv->mac_regs_p; struct eth_dma_regs *dma_p = priv->dma_regs_p; @@ -225,85 +224,99 @@ static void dw_eth_halt(struct eth_device *dev) phy_shutdown(priv->phydev); } -static int dw_eth_init(struct eth_device *dev, bd_t *bis) +static int _dw_eth_init(struct dw_eth_dev *priv, u8 *enetaddr) { - struct dw_eth_dev *priv = dev->priv; struct eth_mac_regs *mac_p = priv->mac_regs_p; struct eth_dma_regs *dma_p = priv->dma_regs_p; unsigned int start; + int ret; writel(readl(&dma_p->busmode) | DMAMAC_SRST, &dma_p->busmode); start = get_timer(0); while (readl(&dma_p->busmode) & DMAMAC_SRST) { - if (get_timer(start) >= CONFIG_MACRESET_TIMEOUT) - return -1; + 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_write_hwaddr(dev); + /* + * Soft reset above clears HW address registers. + * So we have to set it here once again. + */ + _dw_write_hwaddr(priv, enetaddr); - rx_descs_init(dev); - tx_descs_init(dev); + rx_descs_init(priv); + tx_descs_init(priv); - writel(FIXEDBURST | PRIORXTX_41 | BURST_16, &dma_p->busmode); + writel(FIXEDBURST | PRIORXTX_41 | DMA_PBL, &dma_p->busmode); +#ifndef CONFIG_DW_MAC_FORCE_THRESHOLD_MODE writel(readl(&dma_p->opmode) | FLUSHTXFIFO | STOREFORWARD, &dma_p->opmode); +#else + writel(readl(&dma_p->opmode) | FLUSHTXFIFO, + &dma_p->opmode); +#endif writel(readl(&dma_p->opmode) | RXSTART | TXSTART, &dma_p->opmode); +#ifdef CONFIG_DW_AXI_BURST_LEN + writel((CONFIG_DW_AXI_BURST_LEN & 0x1FF >> 1), &dma_p->axibus); +#endif + /* Start up the PHY */ - if (phy_startup(priv->phydev)) { + ret = phy_startup(priv->phydev); + if (ret) { printf("Could not initialize PHY %s\n", priv->phydev->dev->name); - return -1; + return ret; } dw_adjust_link(mac_p, priv->phydev); if (!priv->phydev->link) - return -1; + return -EIO; writel(readl(&mac_p->conf) | RXENABLE | TXENABLE, &mac_p->conf); return 0; } -static int dw_eth_send(struct eth_device *dev, void *packet, int length) +static int _dw_eth_send(struct dw_eth_dev *priv, void *packet, int length) { - struct dw_eth_dev *priv = dev->priv; struct eth_dma_regs *dma_p = priv->dma_regs_p; u32 desc_num = priv->tx_currdescnum; struct dmamacdescr *desc_p = &priv->tx_mac_descrtable[desc_num]; - + uint32_t desc_start = (uint32_t)desc_p; + uint32_t desc_end = desc_start + + roundup(sizeof(*desc_p), ARCH_DMA_MINALIGN); + uint32_t data_start = (uint32_t)desc_p->dmamac_addr; + uint32_t 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 roundup to - * ARCH_DMA_MINALIGN. This is safe because the individual - * descriptors in the array are each aligned to - * ARCH_DMA_MINALIGN. + * 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( - (unsigned long)desc_p, - (unsigned long)desc_p + - roundup(sizeof(desc_p->txrx_status), ARCH_DMA_MINALIGN)); + invalidate_dcache_range(desc_start, desc_end); /* Check if the descriptor is owned by CPU */ if (desc_p->txrx_status & DESC_TXSTS_OWNBYDMA) { printf("CPU not owner of tx frame\n"); - return -1; + return -EPERM; } - memcpy((void *)desc_p->dmamac_addr, packet, length); + memcpy(desc_p->dmamac_addr, packet, length); /* Flush data to be sent */ - flush_dcache_range((unsigned long)desc_p->dmamac_addr, - (unsigned long)desc_p->dmamac_addr + length); + flush_dcache_range(data_start, data_end); #if defined(CONFIG_DW_ALTDESCRIPTOR) desc_p->txrx_status |= DESC_TXSTS_TXFIRST | DESC_TXSTS_TXLAST; @@ -321,8 +334,7 @@ static int dw_eth_send(struct eth_device *dev, void *packet, int length) #endif /* Flush modified buffer descriptor */ - flush_dcache_range((unsigned long)desc_p, - (unsigned long)desc_p + sizeof(struct dmamacdescr)); + flush_dcache_range(desc_start, desc_end); /* Test the wrap-around condition. */ if (++desc_num >= CONFIG_TX_DESCR_NUM) @@ -336,17 +348,19 @@ static int dw_eth_send(struct eth_device *dev, void *packet, int length) return 0; } -static int dw_eth_recv(struct eth_device *dev) +static int _dw_eth_recv(struct dw_eth_dev *priv, uchar **packetp) { - struct dw_eth_dev *priv = dev->priv; u32 status, desc_num = priv->rx_currdescnum; struct dmamacdescr *desc_p = &priv->rx_mac_descrtable[desc_num]; - int length = 0; + int length = -EAGAIN; + uint32_t desc_start = (uint32_t)desc_p; + uint32_t desc_end = desc_start + + roundup(sizeof(*desc_p), ARCH_DMA_MINALIGN); + uint32_t data_start = (uint32_t)desc_p->dmamac_addr; + uint32_t data_end; /* Invalidate entire buffer descriptor */ - invalidate_dcache_range((unsigned long)desc_p, - (unsigned long)desc_p + - sizeof(struct dmamacdescr)); + invalidate_dcache_range(desc_start, desc_end); status = desc_p->txrx_status; @@ -357,36 +371,41 @@ static int dw_eth_recv(struct eth_device *dev) DESC_RXSTS_FRMLENSHFT; /* Invalidate received data */ - invalidate_dcache_range((unsigned long)desc_p->dmamac_addr, - (unsigned long)desc_p->dmamac_addr + - roundup(length, ARCH_DMA_MINALIGN)); - - NetReceive(desc_p->dmamac_addr, length); - - /* - * Make the current descriptor valid again and go to - * the next one - */ - desc_p->txrx_status |= DESC_RXSTS_OWNBYDMA; - - /* Flush only status field - others weren't changed */ - flush_dcache_range((unsigned long)&desc_p->txrx_status, - (unsigned long)&desc_p->txrx_status + - sizeof(desc_p->txrx_status)); - - /* Test the wrap-around condition. */ - if (++desc_num >= CONFIG_RX_DESCR_NUM) - desc_num = 0; + data_end = data_start + roundup(length, ARCH_DMA_MINALIGN); + invalidate_dcache_range(data_start, data_end); + *packetp = desc_p->dmamac_addr; } + return length; +} + +static int _dw_free_pkt(struct dw_eth_dev *priv) +{ + u32 desc_num = priv->rx_currdescnum; + struct dmamacdescr *desc_p = &priv->rx_mac_descrtable[desc_num]; + uint32_t desc_start = (uint32_t)desc_p; + uint32_t desc_end = desc_start + + roundup(sizeof(*desc_p), ARCH_DMA_MINALIGN); + + /* + * Make the current descriptor valid again and go to + * the next one + */ + desc_p->txrx_status |= DESC_RXSTS_OWNBYDMA; + + /* 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 length; + return 0; } -static int dw_phy_init(struct eth_device *dev) +static int dw_phy_init(struct dw_eth_dev *priv, void *dev) { - struct dw_eth_dev *priv = dev->priv; struct phy_device *phydev; int mask = 0xffffffff; @@ -396,7 +415,7 @@ static int dw_phy_init(struct eth_device *dev) phydev = phy_find_by_mask(priv->bus, mask, priv->interface); if (!phydev) - return -1; + return -ENODEV; phy_connect_dev(phydev, dev); @@ -406,7 +425,43 @@ static int dw_phy_init(struct eth_device *dev) priv->phydev = phydev; phy_config(phydev); - return 1; + return 0; +} + +#ifndef CONFIG_DM_ETH +static int dw_eth_init(struct eth_device *dev, bd_t *bis) +{ + return _dw_eth_init(dev->priv, dev->enetaddr); +} + +static int dw_eth_send(struct eth_device *dev, void *packet, int length) +{ + return _dw_eth_send(dev->priv, packet, length); +} + +static int dw_eth_recv(struct eth_device *dev) +{ + uchar *packet; + int length; + + length = _dw_eth_recv(dev->priv, &packet); + if (length == -EAGAIN) + return 0; + net_process_received_packet(packet, length); + + _dw_free_pkt(dev->priv); + + return 0; +} + +static void dw_eth_halt(struct eth_device *dev) +{ + return _dw_eth_halt(dev->priv); +} + +static int dw_write_hwaddr(struct eth_device *dev) +{ + return _dw_write_hwaddr(dev->priv, dev->enetaddr); } int designware_initialize(ulong base_addr, u32 interface) @@ -454,5 +509,118 @@ int designware_initialize(ulong base_addr, u32 interface) dw_mdio_init(dev->name, priv->mac_regs_p); priv->bus = miiphy_get_dev_by_name(dev->name); - return dw_phy_init(dev); + return dw_phy_init(priv, dev); +} +#endif + +#ifdef CONFIG_DM_ETH +static int designware_eth_start(struct udevice *dev) +{ + struct eth_pdata *pdata = dev_get_platdata(dev); + + return _dw_eth_init(dev->priv, pdata->enetaddr); +} + +static int designware_eth_send(struct udevice *dev, void *packet, int length) +{ + struct dw_eth_dev *priv = dev_get_priv(dev); + + return _dw_eth_send(priv, packet, length); +} + +static int designware_eth_recv(struct udevice *dev, int flags, uchar **packetp) +{ + struct dw_eth_dev *priv = dev_get_priv(dev); + + return _dw_eth_recv(priv, packetp); +} + +static int designware_eth_free_pkt(struct udevice *dev, uchar *packet, + int length) +{ + struct dw_eth_dev *priv = dev_get_priv(dev); + + return _dw_free_pkt(priv); +} + +static void designware_eth_stop(struct udevice *dev) +{ + struct dw_eth_dev *priv = dev_get_priv(dev); + + return _dw_eth_halt(priv); +} + +static int designware_eth_write_hwaddr(struct udevice *dev) +{ + struct eth_pdata *pdata = dev_get_platdata(dev); + struct dw_eth_dev *priv = dev_get_priv(dev); + + return _dw_write_hwaddr(priv, pdata->enetaddr); +} + +static int designware_eth_probe(struct udevice *dev) +{ + struct eth_pdata *pdata = dev_get_platdata(dev); + struct dw_eth_dev *priv = dev_get_priv(dev); + int ret; + + debug("%s, iobase=%lx, priv=%p\n", __func__, pdata->iobase, priv); + priv->mac_regs_p = (struct eth_mac_regs *)pdata->iobase; + priv->dma_regs_p = (struct eth_dma_regs *)(pdata->iobase + + DW_DMA_BASE_OFFSET); + priv->interface = pdata->phy_interface; + + dw_mdio_init(dev->name, priv->mac_regs_p); + priv->bus = miiphy_get_dev_by_name(dev->name); + + ret = dw_phy_init(priv, dev); + debug("%s, ret=%d\n", __func__, ret); + + return ret; +} + +static const struct eth_ops designware_eth_ops = { + .start = designware_eth_start, + .send = designware_eth_send, + .recv = designware_eth_recv, + .free_pkt = designware_eth_free_pkt, + .stop = designware_eth_stop, + .write_hwaddr = designware_eth_write_hwaddr, +}; + +static int designware_eth_ofdata_to_platdata(struct udevice *dev) +{ + struct eth_pdata *pdata = dev_get_platdata(dev); + const char *phy_mode; + + pdata->iobase = dev_get_addr(dev); + 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; + } + + return 0; } + +static const struct udevice_id designware_eth_ids[] = { + { .compatible = "allwinner,sun7i-a20-gmac" }, + { .compatible = "altr,socfpga-stmmac" }, + { } +}; + +U_BOOT_DRIVER(eth_designware) = { + .name = "eth_designware", + .id = UCLASS_ETH, + .of_match = designware_eth_ids, + .ofdata_to_platdata = designware_eth_ofdata_to_platdata, + .probe = designware_eth_probe, + .ops = &designware_eth_ops, + .priv_auto_alloc_size = sizeof(struct dw_eth_dev), + .platdata_auto_alloc_size = sizeof(struct eth_pdata), + .flags = DM_FLAG_ALLOC_PRIV_DMA, +}; +#endif