// SPDX-License-Identifier: GPL-2.0+ /* * (C) Copyright 2000-2004 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * (C) Copyright 2007 Freescale Semiconductor, Inc. * TsiChung Liew (Tsi-Chung.Liew@freescale.com) * * Conversion to DM * (C) 2019 Angelo Dureghello */ #include #include #include #include #include #include #include #include #include #include #include #undef ET_DEBUG #undef MII_DEBUG /* Ethernet Transmit and Receive Buffers */ #define DBUF_LENGTH 1520 #define TX_BUF_CNT 2 #define PKT_MAXBUF_SIZE 1518 #define PKT_MAXBLR_SIZE 1520 #define LAST_PKTBUFSRX PKTBUFSRX - 1 #define BD_ENET_RX_W_E (BD_ENET_RX_WRAP | BD_ENET_RX_EMPTY) #define BD_ENET_TX_RDY_LST (BD_ENET_TX_READY | BD_ENET_TX_LAST) DECLARE_GLOBAL_DATA_PTR; static void init_eth_info(struct fec_info_s *info) { #ifdef CONFIG_SYS_FEC_BUF_USE_SRAM static u32 tmp; if (info->index == 0) tmp = CONFIG_SYS_INIT_RAM_ADDR + 0x1000; else info->rxbd = (cbd_t *)DBUF_LENGTH; /* setup Receive and Transmit buffer descriptor */ info->rxbd = (cbd_t *)((u32)info->rxbd + tmp); tmp = (u32)info->rxbd; info->txbd = (cbd_t *)((u32)info->txbd + tmp + (PKTBUFSRX * sizeof(cbd_t))); tmp = (u32)info->txbd; info->txbuf = (char *)((u32)info->txbuf + tmp + (CONFIG_SYS_TX_ETH_BUFFER * sizeof(cbd_t))); tmp = (u32)info->txbuf; #else info->rxbd = (cbd_t *)memalign(CONFIG_SYS_CACHELINE_SIZE, (PKTBUFSRX * sizeof(cbd_t))); info->txbd = (cbd_t *)memalign(CONFIG_SYS_CACHELINE_SIZE, (TX_BUF_CNT * sizeof(cbd_t))); info->txbuf = (char *)memalign(CONFIG_SYS_CACHELINE_SIZE, DBUF_LENGTH); #endif #ifdef ET_DEBUG printf("rxbd %x txbd %x\n", (int)info->rxbd, (int)info->txbd); #endif info->phy_name = (char *)memalign(CONFIG_SYS_CACHELINE_SIZE, 32); } static void fec_reset(struct fec_info_s *info) { volatile fec_t *fecp = (fec_t *)(info->iobase); int i; fecp->ecr = FEC_ECR_RESET; for (i = 0; (fecp->ecr & FEC_ECR_RESET) && (i < FEC_RESET_DELAY); ++i) udelay(1); if (i == FEC_RESET_DELAY) printf("FEC_RESET_DELAY timeout\n"); } static void set_fec_duplex_speed(volatile fec_t *fecp, int dup_spd) { struct bd_info *bd = gd->bd; if ((dup_spd >> 16) == FULL) { /* Set maximum frame length */ fecp->rcr = FEC_RCR_MAX_FL(PKT_MAXBUF_SIZE) | FEC_RCR_MII_MODE | FEC_RCR_PROM | 0x100; fecp->tcr = FEC_TCR_FDEN; } else { /* Half duplex mode */ fecp->rcr = FEC_RCR_MAX_FL(PKT_MAXBUF_SIZE) | FEC_RCR_MII_MODE | FEC_RCR_DRT; fecp->tcr &= ~FEC_TCR_FDEN; } if ((dup_spd & 0xFFFF) == _100BASET) { #ifdef CONFIG_MCF5445x fecp->rcr &= ~0x200; /* disabled 10T base */ #endif #ifdef MII_DEBUG printf("100Mbps\n"); #endif bd->bi_ethspeed = 100; } else { #ifdef CONFIG_MCF5445x fecp->rcr |= 0x200; /* enabled 10T base */ #endif #ifdef MII_DEBUG printf("10Mbps\n"); #endif bd->bi_ethspeed = 10; } } #ifdef ET_DEBUG static void dbg_fec_regs(struct udevice *dev) { struct fec_info_s *info = dev->priv; volatile fec_t *fecp = (fec_t *)(info->iobase); printf("=====\n"); printf("ievent %x - %x\n", (int)&fecp->eir, fecp->eir); printf("imask %x - %x\n", (int)&fecp->eimr, fecp->eimr); printf("r_des_active %x - %x\n", (int)&fecp->rdar, fecp->rdar); printf("x_des_active %x - %x\n", (int)&fecp->tdar, fecp->tdar); printf("ecntrl %x - %x\n", (int)&fecp->ecr, fecp->ecr); printf("mii_mframe %x - %x\n", (int)&fecp->mmfr, fecp->mmfr); printf("mii_speed %x - %x\n", (int)&fecp->mscr, fecp->mscr); printf("mii_ctrlstat %x - %x\n", (int)&fecp->mibc, fecp->mibc); printf("r_cntrl %x - %x\n", (int)&fecp->rcr, fecp->rcr); printf("x_cntrl %x - %x\n", (int)&fecp->tcr, fecp->tcr); printf("padr_l %x - %x\n", (int)&fecp->palr, fecp->palr); printf("padr_u %x - %x\n", (int)&fecp->paur, fecp->paur); printf("op_pause %x - %x\n", (int)&fecp->opd, fecp->opd); printf("iadr_u %x - %x\n", (int)&fecp->iaur, fecp->iaur); printf("iadr_l %x - %x\n", (int)&fecp->ialr, fecp->ialr); printf("gadr_u %x - %x\n", (int)&fecp->gaur, fecp->gaur); printf("gadr_l %x - %x\n", (int)&fecp->galr, fecp->galr); printf("x_wmrk %x - %x\n", (int)&fecp->tfwr, fecp->tfwr); printf("r_bound %x - %x\n", (int)&fecp->frbr, fecp->frbr); printf("r_fstart %x - %x\n", (int)&fecp->frsr, fecp->frsr); printf("r_drng %x - %x\n", (int)&fecp->erdsr, fecp->erdsr); printf("x_drng %x - %x\n", (int)&fecp->etdsr, fecp->etdsr); printf("r_bufsz %x - %x\n", (int)&fecp->emrbr, fecp->emrbr); printf("\n"); printf("rmon_t_drop %x - %x\n", (int)&fecp->rmon_t_drop, fecp->rmon_t_drop); printf("rmon_t_packets %x - %x\n", (int)&fecp->rmon_t_packets, fecp->rmon_t_packets); printf("rmon_t_bc_pkt %x - %x\n", (int)&fecp->rmon_t_bc_pkt, fecp->rmon_t_bc_pkt); printf("rmon_t_mc_pkt %x - %x\n", (int)&fecp->rmon_t_mc_pkt, fecp->rmon_t_mc_pkt); printf("rmon_t_crc_align %x - %x\n", (int)&fecp->rmon_t_crc_align, fecp->rmon_t_crc_align); printf("rmon_t_undersize %x - %x\n", (int)&fecp->rmon_t_undersize, fecp->rmon_t_undersize); printf("rmon_t_oversize %x - %x\n", (int)&fecp->rmon_t_oversize, fecp->rmon_t_oversize); printf("rmon_t_frag %x - %x\n", (int)&fecp->rmon_t_frag, fecp->rmon_t_frag); printf("rmon_t_jab %x - %x\n", (int)&fecp->rmon_t_jab, fecp->rmon_t_jab); printf("rmon_t_col %x - %x\n", (int)&fecp->rmon_t_col, fecp->rmon_t_col); printf("rmon_t_p64 %x - %x\n", (int)&fecp->rmon_t_p64, fecp->rmon_t_p64); printf("rmon_t_p65to127 %x - %x\n", (int)&fecp->rmon_t_p65to127, fecp->rmon_t_p65to127); printf("rmon_t_p128to255 %x - %x\n", (int)&fecp->rmon_t_p128to255, fecp->rmon_t_p128to255); printf("rmon_t_p256to511 %x - %x\n", (int)&fecp->rmon_t_p256to511, fecp->rmon_t_p256to511); printf("rmon_t_p512to1023 %x - %x\n", (int)&fecp->rmon_t_p512to1023, fecp->rmon_t_p512to1023); printf("rmon_t_p1024to2047 %x - %x\n", (int)&fecp->rmon_t_p1024to2047, fecp->rmon_t_p1024to2047); printf("rmon_t_p_gte2048 %x - %x\n", (int)&fecp->rmon_t_p_gte2048, fecp->rmon_t_p_gte2048); printf("rmon_t_octets %x - %x\n", (int)&fecp->rmon_t_octets, fecp->rmon_t_octets); printf("\n"); printf("ieee_t_drop %x - %x\n", (int)&fecp->ieee_t_drop, fecp->ieee_t_drop); printf("ieee_t_frame_ok %x - %x\n", (int)&fecp->ieee_t_frame_ok, fecp->ieee_t_frame_ok); printf("ieee_t_1col %x - %x\n", (int)&fecp->ieee_t_1col, fecp->ieee_t_1col); printf("ieee_t_mcol %x - %x\n", (int)&fecp->ieee_t_mcol, fecp->ieee_t_mcol); printf("ieee_t_def %x - %x\n", (int)&fecp->ieee_t_def, fecp->ieee_t_def); printf("ieee_t_lcol %x - %x\n", (int)&fecp->ieee_t_lcol, fecp->ieee_t_lcol); printf("ieee_t_excol %x - %x\n", (int)&fecp->ieee_t_excol, fecp->ieee_t_excol); printf("ieee_t_macerr %x - %x\n", (int)&fecp->ieee_t_macerr, fecp->ieee_t_macerr); printf("ieee_t_cserr %x - %x\n", (int)&fecp->ieee_t_cserr, fecp->ieee_t_cserr); printf("ieee_t_sqe %x - %x\n", (int)&fecp->ieee_t_sqe, fecp->ieee_t_sqe); printf("ieee_t_fdxfc %x - %x\n", (int)&fecp->ieee_t_fdxfc, fecp->ieee_t_fdxfc); printf("ieee_t_octets_ok %x - %x\n", (int)&fecp->ieee_t_octets_ok, fecp->ieee_t_octets_ok); printf("\n"); printf("rmon_r_drop %x - %x\n", (int)&fecp->rmon_r_drop, fecp->rmon_r_drop); printf("rmon_r_packets %x - %x\n", (int)&fecp->rmon_r_packets, fecp->rmon_r_packets); printf("rmon_r_bc_pkt %x - %x\n", (int)&fecp->rmon_r_bc_pkt, fecp->rmon_r_bc_pkt); printf("rmon_r_mc_pkt %x - %x\n", (int)&fecp->rmon_r_mc_pkt, fecp->rmon_r_mc_pkt); printf("rmon_r_crc_align %x - %x\n", (int)&fecp->rmon_r_crc_align, fecp->rmon_r_crc_align); printf("rmon_r_undersize %x - %x\n", (int)&fecp->rmon_r_undersize, fecp->rmon_r_undersize); printf("rmon_r_oversize %x - %x\n", (int)&fecp->rmon_r_oversize, fecp->rmon_r_oversize); printf("rmon_r_frag %x - %x\n", (int)&fecp->rmon_r_frag, fecp->rmon_r_frag); printf("rmon_r_jab %x - %x\n", (int)&fecp->rmon_r_jab, fecp->rmon_r_jab); printf("rmon_r_p64 %x - %x\n", (int)&fecp->rmon_r_p64, fecp->rmon_r_p64); printf("rmon_r_p65to127 %x - %x\n", (int)&fecp->rmon_r_p65to127, fecp->rmon_r_p65to127); printf("rmon_r_p128to255 %x - %x\n", (int)&fecp->rmon_r_p128to255, fecp->rmon_r_p128to255); printf("rmon_r_p256to511 %x - %x\n", (int)&fecp->rmon_r_p256to511, fecp->rmon_r_p256to511); printf("rmon_r_p512to1023 %x - %x\n", (int)&fecp->rmon_r_p512to1023, fecp->rmon_r_p512to1023); printf("rmon_r_p1024to2047 %x - %x\n", (int)&fecp->rmon_r_p1024to2047, fecp->rmon_r_p1024to2047); printf("rmon_r_p_gte2048 %x - %x\n", (int)&fecp->rmon_r_p_gte2048, fecp->rmon_r_p_gte2048); printf("rmon_r_octets %x - %x\n", (int)&fecp->rmon_r_octets, fecp->rmon_r_octets); printf("\n"); printf("ieee_r_drop %x - %x\n", (int)&fecp->ieee_r_drop, fecp->ieee_r_drop); printf("ieee_r_frame_ok %x - %x\n", (int)&fecp->ieee_r_frame_ok, fecp->ieee_r_frame_ok); printf("ieee_r_crc %x - %x\n", (int)&fecp->ieee_r_crc, fecp->ieee_r_crc); printf("ieee_r_align %x - %x\n", (int)&fecp->ieee_r_align, fecp->ieee_r_align); printf("ieee_r_macerr %x - %x\n", (int)&fecp->ieee_r_macerr, fecp->ieee_r_macerr); printf("ieee_r_fdxfc %x - %x\n", (int)&fecp->ieee_r_fdxfc, fecp->ieee_r_fdxfc); printf("ieee_r_octets_ok %x - %x\n", (int)&fecp->ieee_r_octets_ok, fecp->ieee_r_octets_ok); printf("\n\n\n"); } #endif int mcffec_init(struct udevice *dev) { struct fec_info_s *info = dev->priv; volatile fec_t *fecp = (fec_t *) (info->iobase); int rval, i; uchar ea[6]; fecpin_setclear(info, 1); fec_reset(info); #if defined(CONFIG_CMD_MII) || defined (CONFIG_MII) || \ defined (CONFIG_SYS_DISCOVER_PHY) mii_init(); set_fec_duplex_speed(fecp, info->dup_spd); #else #ifndef CONFIG_SYS_DISCOVER_PHY set_fec_duplex_speed(fecp, (FECDUPLEX << 16) | FECSPEED); #endif /* ifndef CONFIG_SYS_DISCOVER_PHY */ #endif /* CONFIG_CMD_MII || CONFIG_MII */ /* We use strictly polling mode only */ fecp->eimr = 0; /* Clear any pending interrupt */ fecp->eir = 0xffffffff; /* Set station address */ if (info->index == 0) rval = eth_env_get_enetaddr("ethaddr", ea); else rval = eth_env_get_enetaddr("eth1addr", ea); if (!rval) { puts("Please set a valid MAC address\n"); return -EINVAL; } fecp->palr = (ea[0] << 24) | (ea[1] << 16) | (ea[2] << 8) | (ea[3]); fecp->paur = (ea[4] << 24) | (ea[5] << 16); /* Clear unicast address hash table */ fecp->iaur = 0; fecp->ialr = 0; /* Clear multicast address hash table */ fecp->gaur = 0; fecp->galr = 0; /* Set maximum receive buffer size. */ fecp->emrbr = PKT_MAXBLR_SIZE; /* * Setup Buffers and Buffer Descriptors */ info->rx_idx = 0; info->tx_idx = 0; /* * Setup Receiver Buffer Descriptors (13.14.24.18) * Settings: * Empty, Wrap */ for (i = 0; i < PKTBUFSRX; i++) { info->rxbd[i].cbd_sc = BD_ENET_RX_EMPTY; info->rxbd[i].cbd_datlen = 0; /* Reset */ info->rxbd[i].cbd_bufaddr = (uint) net_rx_packets[i]; } info->rxbd[PKTBUFSRX - 1].cbd_sc |= BD_ENET_RX_WRAP; /* * Setup Ethernet Transmitter Buffer Descriptors (13.14.24.19) * Settings: * Last, Tx CRC */ for (i = 0; i < TX_BUF_CNT; i++) { info->txbd[i].cbd_sc = BD_ENET_TX_LAST | BD_ENET_TX_TC; info->txbd[i].cbd_datlen = 0; /* Reset */ info->txbd[i].cbd_bufaddr = (uint) (&info->txbuf[0]); } info->txbd[TX_BUF_CNT - 1].cbd_sc |= BD_ENET_TX_WRAP; /* Set receive and transmit descriptor base */ fecp->erdsr = (unsigned int)(&info->rxbd[0]); fecp->etdsr = (unsigned int)(&info->txbd[0]); /* Now enable the transmit and receive processing */ fecp->ecr |= FEC_ECR_ETHER_EN; /* And last, try to fill Rx Buffer Descriptors * Descriptor polling active */ fecp->rdar = 0x01000000; return 0; } static int mcffec_send(struct udevice *dev, void *packet, int length) { struct fec_info_s *info = dev->priv; volatile fec_t *fecp = (fec_t *)info->iobase; int j, rc; u16 phy_status; miiphy_read(dev->name, info->phy_addr, MII_BMSR, &phy_status); /* section 16.9.23.3 * Wait for ready */ j = 0; while ((info->txbd[info->tx_idx].cbd_sc & BD_ENET_TX_READY) && (j < info->to_loop)) { udelay(1); j++; } if (j >= info->to_loop) printf("TX not ready\n"); info->txbd[info->tx_idx].cbd_bufaddr = (uint)packet; info->txbd[info->tx_idx].cbd_datlen = length; info->txbd[info->tx_idx].cbd_sc |= BD_ENET_TX_RDY_LST; /* Activate transmit Buffer Descriptor polling */ fecp->tdar = 0x01000000; /* Descriptor polling active */ #ifndef CONFIG_SYS_FEC_BUF_USE_SRAM /* * FEC unable to initial transmit data packet. * A nop will ensure the descriptor polling active completed. * CF Internal RAM has shorter cycle access than DRAM. If use * DRAM as Buffer descriptor and data, a nop is a must. * Affect only V2 and V3. */ __asm__ ("nop"); #endif #ifdef CONFIG_SYS_UNIFY_CACHE icache_invalid(); #endif j = 0; while ((info->txbd[info->tx_idx].cbd_sc & BD_ENET_TX_READY) && (j < info->to_loop)) { udelay(1); j++; } if (j >= info->to_loop) printf("TX timeout\n"); #ifdef ET_DEBUG printf("%s[%d] %s: cycles: %d status: %x retry cnt: %d\n", __FILE__, __LINE__, __func__, j, info->txbd[info->tx_idx].cbd_sc, (info->txbd[info->tx_idx].cbd_sc & 0x003C) >> 2); #endif /* return only status bits */ rc = (info->txbd[info->tx_idx].cbd_sc & BD_ENET_TX_STATS); info->tx_idx = (info->tx_idx + 1) % TX_BUF_CNT; return rc; } static int mcffec_recv(struct udevice *dev, int flags, uchar **packetp) { struct fec_info_s *info = dev->priv; volatile fec_t *fecp = (fec_t *)info->iobase; int length = -1; for (;;) { #ifdef CONFIG_SYS_UNIFY_CACHE icache_invalid(); #endif /* If nothing received - leave for() loop */ if (info->rxbd[info->rx_idx].cbd_sc & BD_ENET_RX_EMPTY) break; length = info->rxbd[info->rx_idx].cbd_datlen; if (info->rxbd[info->rx_idx].cbd_sc & 0x003f) { printf("%s[%d] err: %x\n", __func__, __LINE__, info->rxbd[info->rx_idx].cbd_sc); } else { length -= 4; /* * Pass the buffer ptr up to the protocol layers. */ *packetp = net_rx_packets[info->rx_idx]; fecp->eir |= FEC_EIR_RXF; } /* Give the buffer back to the FEC. */ info->rxbd[info->rx_idx].cbd_datlen = 0; /* wrap around buffer index when necessary */ if (info->rx_idx == LAST_PKTBUFSRX) { info->rxbd[PKTBUFSRX - 1].cbd_sc = BD_ENET_RX_W_E; info->rx_idx = 0; } else { info->rxbd[info->rx_idx].cbd_sc = BD_ENET_RX_EMPTY; info->rx_idx++; } /* Try to fill Buffer Descriptors * Descriptor polling active */ fecp->rdar = 0x01000000; } return length; } static void mcffec_halt(struct udevice *dev) { struct fec_info_s *info = dev->priv; fec_reset(info); fecpin_setclear(info, 0); info->rx_idx = 0; info->tx_idx = 0; memset(info->rxbd, 0, PKTBUFSRX * sizeof(cbd_t)); memset(info->txbd, 0, TX_BUF_CNT * sizeof(cbd_t)); memset(info->txbuf, 0, DBUF_LENGTH); } static const struct eth_ops mcffec_ops = { .start = mcffec_init, .send = mcffec_send, .recv = mcffec_recv, .stop = mcffec_halt, }; /* * Boot sequence, called just after mcffec_ofdata_to_platdata, * as DM way, it replaces old mcffec_initialize. */ static int mcffec_probe(struct udevice *dev) { struct eth_pdata *pdata = dev_get_platdata(dev); struct fec_info_s *info = dev->priv; int node = dev_of_offset(dev); int retval, fec_idx; const u32 *val; info->index = dev->seq; info->iobase = pdata->iobase; info->phy_addr = -1; val = fdt_getprop(gd->fdt_blob, node, "mii-base", NULL); if (val) { u32 fec_iobase; fec_idx = fdt32_to_cpu(*val); if (fec_idx == info->index) { fec_iobase = info->iobase; } else { printf("mii base != base address, fec_idx %d\n", fec_idx); retval = fec_get_base_addr(fec_idx, &fec_iobase); if (retval) return retval; } info->miibase = fec_iobase; } val = fdt_getprop(gd->fdt_blob, node, "phy-addr", NULL); if (val) info->phy_addr = fdt32_to_cpu(*val); val = fdt_getprop(gd->fdt_blob, node, "timeout-loop", NULL); if (val) info->to_loop = fdt32_to_cpu(*val); init_eth_info(info); #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) info->bus = mdio_alloc(); if (!info->bus) return -ENOMEM; strcpy(info->bus->name, dev->name); info->bus->read = mcffec_miiphy_read; info->bus->write = mcffec_miiphy_write; retval = mdio_register(info->bus); if (retval < 0) return retval; #endif return 0; } static int mcffec_remove(struct udevice *dev) { struct fec_info_s *priv = dev_get_priv(dev); mdio_unregister(priv->bus); mdio_free(priv->bus); return 0; } /* * Boot sequence, called 1st */ static int mcffec_ofdata_to_platdata(struct udevice *dev) { struct eth_pdata *pdata = dev_get_platdata(dev); const u32 *val; pdata->iobase = (phys_addr_t)devfdt_get_addr(dev); /* Default to 10Mbit/s */ pdata->max_speed = 10; val = fdt_getprop(gd->fdt_blob, dev_of_offset(dev), "max-speed", NULL); if (val) pdata->max_speed = fdt32_to_cpu(*val); return 0; } static const struct udevice_id mcffec_ids[] = { { .compatible = "fsl,mcf-fec" }, { } }; U_BOOT_DRIVER(mcffec) = { .name = "mcffec", .id = UCLASS_ETH, .of_match = mcffec_ids, .ofdata_to_platdata = mcffec_ofdata_to_platdata, .probe = mcffec_probe, .remove = mcffec_remove, .ops = &mcffec_ops, .priv_auto_alloc_size = sizeof(struct fec_info_s), .platdata_auto_alloc_size = sizeof(struct eth_pdata), };