X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=drivers%2Fnet%2Fgreth.c;h=9bc8a8d1aa1543a74923f90f605684e6281cc18a;hb=466f775e02bcde5ea7454cd73ecf1a0f79275a30;hp=788aac81c226a372d74b877479668c045dc944c8;hpb=6644c195733ed4687014015dfd5cb5e220e8ec9a;p=oweals%2Fu-boot.git diff --git a/drivers/net/greth.c b/drivers/net/greth.c index 788aac81c2..9bc8a8d1aa 100644 --- a/drivers/net/greth.c +++ b/drivers/net/greth.c @@ -5,29 +5,14 @@ * (C) Copyright 2007 * Daniel Hellstrom, Gaisler Research, daniel@gaisler.com * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA + * SPDX-License-Identifier: GPL-2.0+ */ /* #define DEBUG */ #include #include +#include #include #include #include @@ -42,6 +27,13 @@ #define GRETH_PHY_TIMEOUT_MS 3000 #endif +/* Default to PHY adrress 0 not not specified */ +#ifdef CONFIG_SYS_GRLIB_GRETH_PHYADDR +#define GRETH_PHY_ADR_DEFAULT CONFIG_SYS_GRLIB_GRETH_PHYADDR +#else +#define GRETH_PHY_ADR_DEFAULT 0 +#endif + /* ByPass Cache when reading regs */ #define GRETH_REGLOAD(addr) SPARC_NOCACHE_READ(addr) /* Write-through cache ==> no bypassing needed on writes */ @@ -102,12 +94,12 @@ typedef struct { } greth_priv; /* Read MII register 'addr' from core 'regs' */ -static int read_mii(int addr, volatile greth_regs * regs) +static int read_mii(int phyaddr, int regaddr, volatile greth_regs * regs) { while (GRETH_REGLOAD(®s->mdio) & GRETH_MII_BUSY) { } - GRETH_REGSAVE(®s->mdio, (0 << 11) | ((addr & 0x1F) << 6) | 2); + GRETH_REGSAVE(®s->mdio, ((phyaddr & 0x1F) << 11) | ((regaddr & 0x1F) << 6) | 2); while (GRETH_REGLOAD(®s->mdio) & GRETH_MII_BUSY) { } @@ -119,14 +111,14 @@ static int read_mii(int addr, volatile greth_regs * regs) } } -static void write_mii(int addr, int data, volatile greth_regs * regs) +static void write_mii(int phyaddr, int regaddr, int data, volatile greth_regs * regs) { while (GRETH_REGLOAD(®s->mdio) & GRETH_MII_BUSY) { } GRETH_REGSAVE(®s->mdio, - ((data & 0xFFFF) << 16) | (0 << 11) | ((addr & 0x1F) << 6) - | 1); + ((data & 0xFFFF) << 16) | ((phyaddr & 0x1F) << 11) | + ((regaddr & 0x1F) << 6) | 1); while (GRETH_REGLOAD(®s->mdio) & GRETH_MII_BUSY) { } @@ -145,13 +137,23 @@ int greth_init(struct eth_device *dev, bd_t * bis) debug("greth_init\n"); + /* Reset core */ + GRETH_REGSAVE(®s->control, (GRETH_RESET | (greth->gb << 8) | + (greth->sp << 7) | (greth->fd << 4))); + + /* Wait for Reset to complete */ + while ( GRETH_REGLOAD(®s->control) & GRETH_RESET) ; + + GRETH_REGSAVE(®s->control, + ((greth->gb << 8) | (greth->sp << 7) | (greth->fd << 4))); + if (!greth->rxbd_base) { /* allocate descriptors */ greth->rxbd_base = (greth_bd *) memalign(0x1000, GRETH_RXBD_CNT * sizeof(greth_bd)); greth->txbd_base = (greth_bd *) - memalign(0x1000, GRETH_RXBD_CNT * sizeof(greth_bd)); + memalign(0x1000, GRETH_TXBD_CNT * sizeof(greth_bd)); /* allocate buffers to all descriptors */ greth->rxbuf_base = @@ -183,7 +185,7 @@ int greth_init(struct eth_device *dev, bd_t * bis) for (i = 0; i < GRETH_TXBD_CNT; i++) { greth->txbd_base[i].addr = 0; /* enable desciptor & set wrap bit if last descriptor */ - if (i >= (GRETH_RXBD_CNT - 1)) { + if (i >= (GRETH_TXBD_CNT - 1)) { greth->txbd_base[i].stat = GRETH_BD_WR; } else { greth->txbd_base[i].stat = 0; @@ -214,6 +216,26 @@ int greth_init_phy(greth_priv * dev, bd_t * bis) greth_regs *regs = dev->regs; int tmp, tmp1, tmp2, i; unsigned int start, timeout; + int phyaddr = GRETH_PHY_ADR_DEFAULT; + +#ifndef CONFIG_SYS_GRLIB_GRETH_PHYADDR + /* If BSP doesn't provide a hardcoded PHY address the driver will + * try to autodetect PHY address by stopping the search on the first + * PHY address which has REG0 implemented. + */ + for (i=0; i<32; i++) { + tmp = read_mii(i, 0, regs); + if ( (tmp != 0) && (tmp != 0xffff) ) { + phyaddr = i; + break; + } + } +#endif + + /* Save PHY Address */ + dev->phyaddr = phyaddr; + + debug("GRETH PHY ADDRESS: %d\n", phyaddr); /* X msecs to ticks */ timeout = usec2ticks(GRETH_PHY_TIMEOUT_MS * 1000); @@ -225,17 +247,21 @@ int greth_init_phy(greth_priv * dev, bd_t * bis) /* get phy control register default values */ - while ((tmp = read_mii(0, regs)) & 0x8000) { - if (get_timer(start) > timeout) + while ((tmp = read_mii(phyaddr, 0, regs)) & 0x8000) { + if (get_timer(start) > timeout) { + debug("greth_init_phy: PHY read 1 failed\n"); return 1; /* Fail */ + } } /* reset PHY and wait for completion */ - write_mii(0, 0x8000 | tmp, regs); + write_mii(phyaddr, 0, 0x8000 | tmp, regs); - while (((tmp = read_mii(0, regs))) & 0x8000) { - if (get_timer(start) > timeout) + while (((tmp = read_mii(phyaddr, 0, regs))) & 0x8000) { + if (get_timer(start) > timeout) { + debug("greth_init_phy: PHY read 2 failed\n"); return 1; /* Fail */ + } } /* Check if PHY is autoneg capable and then determine operating @@ -246,16 +272,16 @@ int greth_init_phy(greth_priv * dev, bd_t * bis) dev->sp = 0; dev->auto_neg = 0; if (!((tmp >> 12) & 1)) { - write_mii(0, 0, regs); + write_mii(phyaddr, 0, 0, regs); } else { /* wait for auto negotiation to complete and then check operating mode */ dev->auto_neg = 1; i = 0; - while (!(((tmp = read_mii(1, regs)) >> 5) & 1)) { + while (!(((tmp = read_mii(phyaddr, 1, regs)) >> 5) & 1)) { if (get_timer(start) > timeout) { printf("Auto negotiation timed out. " "Selecting default config\n"); - tmp = read_mii(0, regs); + tmp = read_mii(phyaddr, 0, regs); dev->gb = ((tmp >> 6) & 1) && !((tmp >> 13) & 1); dev->sp = !((tmp >> 6) & 1) @@ -265,8 +291,8 @@ int greth_init_phy(greth_priv * dev, bd_t * bis) } } if ((tmp >> 8) & 1) { - tmp1 = read_mii(9, regs); - tmp2 = read_mii(10, regs); + tmp1 = read_mii(phyaddr, 9, regs); + tmp2 = read_mii(phyaddr, 10, regs); if ((tmp1 & GRETH_MII_EXTADV_1000FD) && (tmp2 & GRETH_MII_EXTPRT_1000FD)) { dev->gb = 1; @@ -279,8 +305,8 @@ int greth_init_phy(greth_priv * dev, bd_t * bis) } } if ((dev->gb == 0) || ((dev->gb == 1) && (dev->gbit_mac == 0))) { - tmp1 = read_mii(4, regs); - tmp2 = read_mii(5, regs); + tmp1 = read_mii(phyaddr, 4, regs); + tmp2 = read_mii(phyaddr, 5, regs); if ((tmp1 & GRETH_MII_100TXFD) && (tmp2 & GRETH_MII_100TXFD)) { dev->sp = 1; @@ -297,7 +323,7 @@ int greth_init_phy(greth_priv * dev, bd_t * bis) if ((dev->gb == 1) && (dev->gbit_mac == 0)) { dev->gb = 0; dev->fd = 0; - write_mii(0, dev->sp << 13, regs); + write_mii(phyaddr, 0, dev->sp << 13, regs); } } @@ -307,8 +333,8 @@ int greth_init_phy(greth_priv * dev, bd_t * bis) %d Mbps %s duplex\n", dev->gbit_mac ? "10/100/1000" : "10/100", (unsigned int)(regs), (unsigned int)(dev->irq), dev->gb ? 1000 : (dev->sp ? 100 : 10), dev->fd ? "full" : "half"); /* Read out PHY info if extended registers are available */ if (tmp & 1) { - tmp1 = read_mii(2, regs); - tmp2 = read_mii(3, regs); + tmp1 = read_mii(phyaddr, 2, regs); + tmp2 = read_mii(phyaddr, 3, regs); tmp1 = (tmp1 << 6) | ((tmp2 >> 10) & 0x3F); tmp = tmp2 & 0xF; @@ -362,7 +388,7 @@ void greth_halt(struct eth_device *dev) } } -int greth_send(struct eth_device *dev, volatile void *eth_data, int data_length) +int greth_send(struct eth_device *dev, void *eth_data, int data_length) { greth_priv *greth = dev->priv; greth_regs *regs = greth->regs; @@ -442,7 +468,7 @@ int greth_recv(struct eth_device *dev) greth_regs *regs = greth->regs; greth_bd *rxbd; unsigned int status, len = 0, bad; - unsigned char *d; + char *d; int enable = 0; int i; @@ -463,7 +489,7 @@ int greth_recv(struct eth_device *dev) goto done; } - debug("greth_recv: packet 0x%lx, 0x%lx, len: %d\n", + debug("greth_recv: packet 0x%x, 0x%x, len: %d\n", (unsigned int)rxbd, status, status & GRETH_BD_LEN); /* Check status for errors. @@ -492,8 +518,7 @@ int greth_recv(struct eth_device *dev) for (i = 0; i < GRETH_RXBD_CNT; i++) { printf("[%d]: Stat=0x%lx, Addr=0x%lx\n", i, GRETH_REGLOAD(&greth->rxbd_base[i].stat), - GRETH_REGLOAD(&greth->rxbd_base[i]. - addr)); + GRETH_REGLOAD(&greth->rxbd_base[i].addr)); } } else { /* Process the incoming packet. */ @@ -509,7 +534,7 @@ int greth_recv(struct eth_device *dev) sparc_dcache_flush_all(); /* pass packet on to network subsystem */ - NetReceive((void *)d, len); + net_process_received_packet((void *)d, len); /* bump stats counters */ greth->stats.rx_packets++; @@ -530,13 +555,13 @@ int greth_recv(struct eth_device *dev) (unsigned int)greth->rxbd_max) ? greth-> rxbd_base : (greth->rxbd_curr + 1); - }; + } if (enable) { GRETH_REGORIN(®s->control, GRETH_RXEN); } done: - /* return positive length of packet or 0 if non recieved */ + /* return positive length of packet or 0 if non received */ return len; } @@ -580,7 +605,7 @@ int greth_initialize(bd_t * bis) greth->regs = (greth_regs *) apbdev.address; greth->irq = apbdev.irq; - debug("Found GRETH at 0x%lx, irq %d\n", greth->regs, greth->irq); + debug("Found GRETH at %p, irq %d\n", greth->regs, greth->irq); dev->priv = (void *)greth; dev->iobase = (unsigned int)greth->regs; dev->init = greth_init; @@ -604,14 +629,15 @@ int greth_initialize(bd_t * bis) /* Make descriptor string */ if (greth->gbit_mac) { - sprintf(dev->name, "GRETH 10/100/GB"); + sprintf(dev->name, "GRETH_10/100/GB"); } else { - sprintf(dev->name, "GRETH 10/100"); + sprintf(dev->name, "GRETH_10/100"); } /* initiate PHY, select speed/duplex depending on connected PHY */ if (greth_init_phy(greth, bis)) { /* Failed to init PHY (timedout) */ + debug("GRETH[%p]: Failed to init PHY\n", greth->regs); return -1; } @@ -628,17 +654,13 @@ int greth_initialize(bd_t * bis) } } } else { - /* HW Address not found in environment, Set default HW address */ - addr[0] = GRETH_HWADDR_0; /* MSB */ - addr[1] = GRETH_HWADDR_1; - addr[2] = GRETH_HWADDR_2; - addr[3] = GRETH_HWADDR_3; - addr[4] = GRETH_HWADDR_4; - addr[5] = GRETH_HWADDR_5; /* LSB */ + /* No ethaddr set */ + return -EINVAL; } /* set and remember MAC address */ greth_set_hwaddr(greth, addr); + debug("GRETH[%p]: Initialized successfully\n", greth->regs); return 0; }