diff options
Diffstat (limited to 'drivers/net/xilinx_axi_emac.c')
-rw-r--r-- | drivers/net/xilinx_axi_emac.c | 193 |
1 files changed, 142 insertions, 51 deletions
diff --git a/drivers/net/xilinx_axi_emac.c b/drivers/net/xilinx_axi_emac.c index 2ce6271afe..2ec76d0f52 100644 --- a/drivers/net/xilinx_axi_emac.c +++ b/drivers/net/xilinx_axi_emac.c @@ -1,5 +1,6 @@ // SPDX-License-Identifier: GPL-2.0+ /* + * Copyright (C) 2021 Waymo LLC * Copyright (C) 2011 Michal Simek <monstr@monstr.eu> * Copyright (C) 2011 PetaLogix * Copyright (C) 2010 Xilinx, Inc. All rights reserved. @@ -73,9 +74,22 @@ DECLARE_GLOBAL_DATA_PTR; #define XAXIDMA_BD_CTRL_TXSOF_MASK 0x08000000 /* First tx packet */ #define XAXIDMA_BD_CTRL_TXEOF_MASK 0x04000000 /* Last tx packet */ -#define DMAALIGN 128 +/* Bitmasks for XXV Ethernet MAC */ +#define XXV_TC_TX_MASK 0x00000001 +#define XXV_TC_FCS_MASK 0x00000002 +#define XXV_RCW1_RX_MASK 0x00000001 +#define XXV_RCW1_FCS_MASK 0x00000002 + +#define DMAALIGN 128 +#define XXV_MIN_PKT_SIZE 60 static u8 rxframe[PKTSIZE_ALIGN] __attribute((aligned(DMAALIGN))); +static u8 txminframe[XXV_MIN_PKT_SIZE] __attribute((aligned(DMAALIGN))); + +enum emac_variant { + EMAC_1G = 0, + EMAC_10G_25G = 1, +}; /* Reflect dma offsets */ struct axidma_reg { @@ -87,6 +101,17 @@ struct axidma_reg { u32 tail_hi; /* TAILDESC high 32 bit */ }; +/* Platform data structures */ +struct axidma_plat { + struct eth_pdata eth_pdata; + struct axidma_reg *dmatx; + struct axidma_reg *dmarx; + int phyaddr; + u8 eth_hasnobuf; + int phy_of_handle; + enum emac_variant mactype; +}; + /* Private driver structures */ struct axidma_priv { struct axidma_reg *dmatx; @@ -98,6 +123,7 @@ struct axidma_priv { struct mii_dev *bus; u8 eth_hasnobuf; int phy_of_handle; + enum emac_variant mactype; }; /* BD descriptors */ @@ -144,6 +170,14 @@ struct axi_regs { u32 uaw1; /* 0x704: Unicast address word 1 */ }; +struct xxv_axi_regs { + u32 gt_reset; /* 0x0 */ + u32 reserved[2]; + u32 tc; /* 0xC: Tx Configuration */ + u32 reserved2; + u32 rcw1; /* 0x14: Rx Configuration Word 1 */ +}; + /* Use MII register 1 (MII status register) to detect PHY */ #define PHY_DETECT_REG 1 @@ -375,6 +409,18 @@ static void axiemac_stop(struct udevice *dev) debug("axiemac: Halted\n"); } +static int xxv_axi_ethernet_init(struct axidma_priv *priv) +{ + struct xxv_axi_regs *regs = (struct xxv_axi_regs *)priv->iobase; + + writel(readl(®s->rcw1) | XXV_RCW1_FCS_MASK, ®s->rcw1); + writel(readl(®s->tc) | XXV_TC_FCS_MASK, ®s->tc); + writel(readl(®s->tc) | XXV_TC_TX_MASK, ®s->tc); + writel(readl(®s->rcw1) | XXV_RCW1_RX_MASK, ®s->rcw1); + + return 0; +} + static int axi_ethernet_init(struct axidma_priv *priv) { struct axi_regs *regs = priv->iobase; @@ -430,6 +476,9 @@ static int axiemac_write_hwaddr(struct udevice *dev) struct axidma_priv *priv = dev_get_priv(dev); struct axi_regs *regs = priv->iobase; + if (priv->mactype != EMAC_1G) + return 0; + /* Set the MAC address */ int val = ((pdata->enetaddr[3] << 24) | (pdata->enetaddr[2] << 16) | (pdata->enetaddr[1] << 8) | (pdata->enetaddr[0])); @@ -467,7 +516,6 @@ static void axi_dma_init(struct axidma_priv *priv) static int axiemac_start(struct udevice *dev) { struct axidma_priv *priv = dev_get_priv(dev); - struct axi_regs *regs = priv->iobase; u32 temp; debug("axiemac: Init started\n"); @@ -480,8 +528,13 @@ static int axiemac_start(struct udevice *dev) axi_dma_init(priv); /* Initialize AxiEthernet hardware. */ - if (axi_ethernet_init(priv)) - return -1; + if (priv->mactype == EMAC_1G) { + if (axi_ethernet_init(priv)) + return -1; + } else { + if (xxv_axi_ethernet_init(priv)) + return -1; + } /* Disable all RX interrupts before RxBD space setup */ temp = readl(&priv->dmarx->control); @@ -515,15 +568,25 @@ static int axiemac_start(struct udevice *dev) /* Rx BD is ready - start */ axienet_dma_write(&rx_bd, &priv->dmarx->tail); - /* Enable TX */ - writel(XAE_TC_TX_MASK, ®s->tc); - /* Enable RX */ - writel(XAE_RCW1_RX_MASK, ®s->rcw1); + if (priv->mactype == EMAC_1G) { + struct axi_regs *regs = priv->iobase; + /* Enable TX */ + writel(XAE_TC_TX_MASK, ®s->tc); + /* Enable RX */ + writel(XAE_RCW1_RX_MASK, ®s->rcw1); + + /* PHY setup */ + if (!setup_phy(dev)) { + axiemac_stop(dev); + return -1; + } + } else { + struct xxv_axi_regs *regs = (struct xxv_axi_regs *)priv->iobase; + /* Enable TX */ + writel(readl(®s->tc) | XXV_TC_TX_MASK, ®s->tc); - /* PHY setup */ - if (!setup_phy(dev)) { - axiemac_stop(dev); - return -1; + /* Enable RX */ + writel(readl(®s->rcw1) | XXV_RCW1_RX_MASK, ®s->rcw1); } debug("axiemac: Init complete\n"); @@ -538,6 +601,14 @@ static int axiemac_send(struct udevice *dev, void *ptr, int len) if (len > PKTSIZE_ALIGN) len = PKTSIZE_ALIGN; + /* If size is less than min packet size, pad to min size */ + if (priv->mactype == EMAC_10G_25G && len < XXV_MIN_PKT_SIZE) { + memset(txminframe, 0, XXV_MIN_PKT_SIZE); + memcpy(txminframe, ptr, len); + len = XXV_MIN_PKT_SIZE; + ptr = txminframe; + } + /* Flush packet to main memory to be trasfered by DMA */ flush_cache((phys_addr_t)ptr, len); @@ -622,7 +693,7 @@ static int axiemac_recv(struct udevice *dev, int flags, uchar **packetp) temp = readl(&priv->dmarx->control); temp &= ~XAXIDMA_IRQ_ALL_MASK; writel(temp, &priv->dmarx->control); - if (!priv->eth_hasnobuf) + if (!priv->eth_hasnobuf && priv->mactype == EMAC_1G) length = rx_bd.app4 & 0xFFFF; /* max length mask */ else length = rx_bd.status & XAXIDMA_BD_STS_ACTUAL_LEN_MASK; @@ -690,19 +761,34 @@ static int axiemac_miiphy_write(struct mii_dev *bus, int addr, int devad, static int axi_emac_probe(struct udevice *dev) { + struct axidma_plat *plat = dev_get_plat(dev); + struct eth_pdata *pdata = &plat->eth_pdata; struct axidma_priv *priv = dev_get_priv(dev); int ret; - priv->bus = mdio_alloc(); - priv->bus->read = axiemac_miiphy_read; - priv->bus->write = axiemac_miiphy_write; - priv->bus->priv = priv; + priv->iobase = (struct axi_regs *)pdata->iobase; + priv->dmatx = plat->dmatx; + /* RX channel offset is 0x30 */ + priv->dmarx = (struct axidma_reg *)((phys_addr_t)priv->dmatx + 0x30); + priv->mactype = plat->mactype; + + if (priv->mactype == EMAC_1G) { + priv->eth_hasnobuf = plat->eth_hasnobuf; + priv->phyaddr = plat->phyaddr; + priv->phy_of_handle = plat->phy_of_handle; + priv->interface = pdata->phy_interface; + + priv->bus = mdio_alloc(); + priv->bus->read = axiemac_miiphy_read; + priv->bus->write = axiemac_miiphy_write; + priv->bus->priv = priv; - ret = mdio_register_seq(priv->bus, dev_seq(dev)); - if (ret) - return ret; + ret = mdio_register_seq(priv->bus, dev_seq(dev)); + if (ret) + return ret; - axiemac_phy_init(dev); + axiemac_phy_init(dev); + } return 0; } @@ -711,9 +797,11 @@ static int axi_emac_remove(struct udevice *dev) { struct axidma_priv *priv = dev_get_priv(dev); - free(priv->phydev); - mdio_unregister(priv->bus); - mdio_free(priv->bus); + if (priv->mactype == EMAC_1G) { + free(priv->phydev); + mdio_unregister(priv->bus); + mdio_free(priv->bus); + } return 0; } @@ -729,14 +817,14 @@ static const struct eth_ops axi_emac_ops = { static int axi_emac_of_to_plat(struct udevice *dev) { - struct eth_pdata *pdata = dev_get_plat(dev); - struct axidma_priv *priv = dev_get_priv(dev); + struct axidma_plat *plat = dev_get_plat(dev); + struct eth_pdata *pdata = &plat->eth_pdata; int node = dev_of_offset(dev); int offset = 0; const char *phy_mode; pdata->iobase = dev_read_addr(dev); - priv->iobase = (struct axi_regs *)pdata->iobase; + plat->mactype = dev_get_driver_data(dev); offset = fdtdec_lookup_phandle(gd->fdt_blob, node, "axistream-connected"); @@ -744,43 +832,46 @@ static int axi_emac_of_to_plat(struct udevice *dev) printf("%s: axistream is not found\n", __func__); return -EINVAL; } - priv->dmatx = (struct axidma_reg *)fdtdec_get_addr(gd->fdt_blob, + plat->dmatx = (struct axidma_reg *)fdtdec_get_addr(gd->fdt_blob, offset, "reg"); - if (!priv->dmatx) { + if (!plat->dmatx) { printf("%s: axi_dma register space not found\n", __func__); return -EINVAL; } - /* RX channel offset is 0x30 */ - priv->dmarx = (struct axidma_reg *)((phys_addr_t)priv->dmatx + 0x30); - priv->phyaddr = -1; + if (plat->mactype == EMAC_1G) { + plat->phyaddr = -1; - offset = fdtdec_lookup_phandle(gd->fdt_blob, node, "phy-handle"); - if (offset > 0) { - priv->phyaddr = fdtdec_get_int(gd->fdt_blob, offset, "reg", -1); - priv->phy_of_handle = offset; - } + offset = fdtdec_lookup_phandle(gd->fdt_blob, node, + "phy-handle"); + if (offset > 0) { + plat->phyaddr = fdtdec_get_int(gd->fdt_blob, offset, + "reg", -1); + plat->phy_of_handle = offset; + } - phy_mode = fdt_getprop(gd->fdt_blob, node, "phy-mode", NULL); - if (phy_mode) - pdata->phy_interface = phy_get_interface_by_name(phy_mode); - if (pdata->phy_interface == -1) { - printf("%s: Invalid PHY interface '%s'\n", __func__, phy_mode); - return -EINVAL; - } - priv->interface = pdata->phy_interface; + phy_mode = fdt_getprop(gd->fdt_blob, node, "phy-mode", NULL); + if (phy_mode) + pdata->phy_interface = phy_get_interface_by_name(phy_mode); + if (pdata->phy_interface == -1) { + printf("%s: Invalid PHY interface '%s'\n", __func__, + phy_mode); + return -EINVAL; + } - priv->eth_hasnobuf = fdtdec_get_bool(gd->fdt_blob, node, - "xlnx,eth-hasnobuf"); + plat->eth_hasnobuf = fdtdec_get_bool(gd->fdt_blob, node, + "xlnx,eth-hasnobuf"); + } - printf("AXI EMAC: %lx, phyaddr %d, interface %s\n", (ulong)priv->iobase, - priv->phyaddr, phy_string_for_interface(priv->interface)); + printf("AXI EMAC: %lx, phyaddr %d, interface %s\n", (ulong)pdata->iobase, + plat->phyaddr, phy_string_for_interface(pdata->phy_interface)); return 0; } static const struct udevice_id axi_emac_ids[] = { - { .compatible = "xlnx,axi-ethernet-1.00.a" }, + { .compatible = "xlnx,axi-ethernet-1.00.a", .data = (uintptr_t)EMAC_1G }, + { .compatible = "xlnx,xxv-ethernet-1.0", .data = (uintptr_t)EMAC_10G_25G }, { } }; @@ -793,5 +884,5 @@ U_BOOT_DRIVER(axi_emac) = { .remove = axi_emac_remove, .ops = &axi_emac_ops, .priv_auto = sizeof(struct axidma_priv), - .plat_auto = sizeof(struct eth_pdata), + .plat_auto = sizeof(struct axidma_plat), }; |