/* * INCA-IP internal switch ethernet driver. * * (C) Copyright 2003-2004 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * 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 */ #include <common.h> #include <malloc.h> #include <net.h> #include <asm/inca-ip.h> #include <asm/addrspace.h> #define NUM_RX_DESC PKTBUFSRX #define NUM_TX_DESC 3 #define TOUT_LOOP 1000000 #define DELAY udelay(10000) /* Sometimes the store word instruction hangs while writing to one * of the Switch registers. Moving the instruction into a separate * function somehow makes the problem go away. */ static void SWORD(volatile u32 * reg, u32 value) { *reg = value; } #define DMA_WRITE_REG(reg, value) *((volatile u32 *)reg) = (u32)value; #define DMA_READ_REG(reg, value) value = (u32)*((volatile u32*)reg) #define SW_WRITE_REG(reg, value) \ SWORD(reg, value);\ DELAY;\ SWORD(reg, value); #define SW_READ_REG(reg, value) \ value = (u32)*((volatile u32*)reg);\ DELAY;\ value = (u32)*((volatile u32*)reg); #define INCA_DMA_TX_POLLING_TIME 0x07 #define INCA_DMA_RX_POLLING_TIME 0x07 #define INCA_DMA_TX_HOLD 0x80000000 #define INCA_DMA_TX_EOP 0x40000000 #define INCA_DMA_TX_SOP 0x20000000 #define INCA_DMA_TX_ICPT 0x10000000 #define INCA_DMA_TX_IEOP 0x08000000 #define INCA_DMA_RX_C 0x80000000 #define INCA_DMA_RX_SOP 0x40000000 #define INCA_DMA_RX_EOP 0x20000000 #define INCA_SWITCH_PHY_SPEED_10H 0x1 #define INCA_SWITCH_PHY_SPEED_10F 0x5 #define INCA_SWITCH_PHY_SPEED_100H 0x2 #define INCA_SWITCH_PHY_SPEED_100F 0x6 /************************ Auto MDIX settings ************************/ #define INCA_IP_AUTO_MDIX_LAN_PORTS_DIR INCA_IP_Ports_P1_DIR #define INCA_IP_AUTO_MDIX_LAN_PORTS_ALTSEL INCA_IP_Ports_P1_ALTSEL #define INCA_IP_AUTO_MDIX_LAN_PORTS_OUT INCA_IP_Ports_P1_OUT #define INCA_IP_AUTO_MDIX_LAN_GPIO_PIN_RXTX 16 #define WAIT_SIGNAL_RETRIES 100 #define WAIT_LINK_RETRIES 100 #define LINK_RETRY_DELAY 2000 /* ms */ /********************************************************************/ typedef struct { union { struct { volatile u32 HOLD :1; volatile u32 ICpt :1; volatile u32 IEop :1; volatile u32 offset :3; volatile u32 reserved0 :4; volatile u32 NFB :22; }field; volatile u32 word; }params; volatile u32 nextRxDescPtr; volatile u32 RxDataPtr; union { struct { volatile u32 C :1; volatile u32 Sop :1; volatile u32 Eop :1; volatile u32 reserved3 :12; volatile u32 NBT :17; }field; volatile u32 word; }status; } inca_rx_descriptor_t; typedef struct { union { struct { volatile u32 HOLD :1; volatile u32 Eop :1; volatile u32 Sop :1; volatile u32 ICpt :1; volatile u32 IEop :1; volatile u32 reserved0 :5; volatile u32 NBA :22; }field; volatile u32 word; }params; volatile u32 nextTxDescPtr; volatile u32 TxDataPtr; volatile u32 C :1; volatile u32 reserved3 :31; } inca_tx_descriptor_t; static inca_rx_descriptor_t rx_ring[NUM_RX_DESC] __attribute__ ((aligned(16))); static inca_tx_descriptor_t tx_ring[NUM_TX_DESC] __attribute__ ((aligned(16))); static int tx_new, rx_new, tx_hold, rx_hold; static int tx_old_hold = -1; static int initialized = 0; static int inca_switch_init(struct eth_device *dev, bd_t * bis); static int inca_switch_send(struct eth_device *dev, volatile void *packet, int length); static int inca_switch_recv(struct eth_device *dev); static void inca_switch_halt(struct eth_device *dev); static void inca_init_switch_chip(void); static void inca_dma_init(void); static int inca_amdix(void); int inca_switch_initialize(bd_t * bis) { struct eth_device *dev; #if 0 printf("Entered inca_switch_initialize()\n"); #endif if (!(dev = (struct eth_device *) malloc (sizeof *dev))) { printf("Failed to allocate memory\n"); return 0; } memset(dev, 0, sizeof(*dev)); inca_dma_init(); inca_init_switch_chip(); #if defined(CONFIG_INCA_IP_SWITCH_AMDIX) inca_amdix(); #endif sprintf(dev->name, "INCA-IP Switch"); dev->init = inca_switch_init; dev->halt = inca_switch_halt; dev->send = inca_switch_send; dev->recv = inca_switch_recv; eth_register(dev); #if 0 printf("Leaving inca_switch_initialize()\n"); #endif return 1; } static int inca_switch_init(struct eth_device *dev, bd_t * bis) { int i; u32 v, regValue; u16 wTmp; #if 0 printf("Entering inca_switch_init()\n"); #endif /* Set MAC address. */ wTmp = (u16)dev->enetaddr[0]; regValue = (wTmp << 8) | dev->enetaddr[1]; SW_WRITE_REG(INCA_IP_Switch_PMAC_SA1, regValue); wTmp = (u16)dev->enetaddr[2]; regValue = (wTmp << 8) | dev->enetaddr[3]; regValue = regValue << 16; wTmp = (u16)dev->enetaddr[4]; regValue |= (wTmp<<8) | dev->enetaddr[5]; SW_WRITE_REG(INCA_IP_Switch_PMAC_SA2, regValue); /* Initialize the descriptor rings. */ for (i = 0; i < NUM_RX_DESC; i++) { inca_rx_descriptor_t * rx_desc = (inca_rx_descriptor_t *)CKSEG1ADDR(&rx_ring[i]); memset(rx_desc, 0, sizeof(rx_ring[i])); /* Set maximum size of receive buffer. */ rx_desc->params.field.NFB = PKTSIZE_ALIGN; /* Set the offset of the receive buffer. Zero means * that the offset mechanism is not used. */ rx_desc->params.field.offset = 0; /* Check if it is the last descriptor. */ if (i == (NUM_RX_DESC - 1)) { /* Let the last descriptor point to the first * one. */ rx_desc->nextRxDescPtr = (u32)CKSEG1ADDR(rx_ring); } else { /* Set the address of the next descriptor. */ rx_desc->nextRxDescPtr = (u32)CKSEG1ADDR(&rx_ring[i+1]); } rx_desc->RxDataPtr = (u32)CKSEG1ADDR(NetRxPackets[i]); } #if 0 printf("rx_ring = 0x%08X 0x%08X\n", (u32)rx_ring, (u32)&rx_ring[0]); printf("tx_ring = 0x%08X 0x%08X\n", (u32)tx_ring, (u32)&tx_ring[0]); #endif for (i = 0; i < NUM_TX_DESC; i++) { inca_tx_descriptor_t * tx_desc = (inca_tx_descriptor_t *)CKSEG1ADDR(&tx_ring[i]); memset(tx_desc, 0, sizeof(tx_ring[i])); tx_desc->params.word = 0; tx_desc->params.field.HOLD = 1; tx_desc->C = 1; /* Check if it is the last descriptor. */ if (i == (NUM_TX_DESC - 1)) { /* Let the last descriptor point to the * first one. */ tx_desc->nextTxDescPtr = (u32)CKSEG1ADDR(tx_ring); } else { /* Set the address of the next descriptor. */ tx_desc->nextTxDescPtr = (u32)CKSEG1ADDR(&tx_ring[i+1]); } } /* Initialize RxDMA. */ DMA_READ_REG(INCA_IP_DMA_DMA_RXISR, v); #if 0 printf("RX status = 0x%08X\n", v); #endif /* Writing to the FRDA of CHANNEL. */ DMA_WRITE_REG(INCA_IP_DMA_DMA_RXFRDA0, (u32)rx_ring); /* Writing to the COMMAND REG. */ DMA_WRITE_REG(INCA_IP_DMA_DMA_RXCCR0, INCA_IP_DMA_DMA_RXCCR0_INIT); /* Initialize TxDMA. */ DMA_READ_REG(INCA_IP_DMA_DMA_TXISR, v); #if 0 printf("TX status = 0x%08X\n", v); #endif /* Writing to the FRDA of CHANNEL. */ DMA_WRITE_REG(INCA_IP_DMA_DMA_TXFRDA0, (u32)tx_ring); tx_new = rx_new = 0; tx_hold = NUM_TX_DESC - 1; rx_hold = NUM_RX_DESC - 1; #if 0 rx_ring[rx_hold].params.field.HOLD = 1; #endif /* enable spanning tree forwarding, enable the CPU port */ /* ST_PT: * CPS (CPU port status) 0x3 (forwarding) * LPS (LAN port status) 0x3 (forwarding) * PPS (PC port status) 0x3 (forwarding) */ SW_WRITE_REG(INCA_IP_Switch_ST_PT,0x3f); #if 0 printf("Leaving inca_switch_init()\n"); #endif return 0; } static int inca_switch_send(struct eth_device *dev, volatile void *packet, int length) { int i; int res = -1; u32 command; u32 regValue; inca_tx_descriptor_t * tx_desc = (inca_tx_descriptor_t *)CKSEG1ADDR(&tx_ring[tx_new]); #if 0 printf("Entered inca_switch_send()\n"); #endif if (length <= 0) { printf ("%s: bad packet size: %d\n", dev->name, length); goto Done; } for(i = 0; tx_desc->C == 0; i++) { if (i >= TOUT_LOOP) { printf("%s: tx error buffer not ready\n", dev->name); goto Done; } } if (tx_old_hold >= 0) { ((inca_tx_descriptor_t *)CKSEG1ADDR(&tx_ring[tx_old_hold]))->params.field.HOLD = 1; } tx_old_hold = tx_hold; tx_desc->params.word = (INCA_DMA_TX_SOP | INCA_DMA_TX_EOP | INCA_DMA_TX_HOLD); tx_desc->C = 0; tx_desc->TxDataPtr = (u32)packet; tx_desc->params.field.NBA = length; ((inca_tx_descriptor_t *)CKSEG1ADDR(&tx_ring[tx_hold]))->params.field.HOLD = 0; tx_hold = tx_new; tx_new = (tx_new + 1) % NUM_TX_DESC; if (! initialized) { command = INCA_IP_DMA_DMA_TXCCR0_INIT; initialized = 1; } else { command = INCA_IP_DMA_DMA_TXCCR0_HR; } DMA_READ_REG(INCA_IP_DMA_DMA_TXCCR0, regValue); regValue |= command; #if 0 printf("regValue = 0x%x\n", regValue); #endif DMA_WRITE_REG(INCA_IP_DMA_DMA_TXCCR0, regValue); #if 1 for(i = 0; ((inca_tx_descriptor_t *)CKSEG1ADDR(&tx_ring[tx_hold]))->C == 0; i++) { if (i >= TOUT_LOOP) { printf("%s: tx buffer not ready\n", dev->name); goto Done; } } #endif res = length; Done: #if 0 printf("Leaving inca_switch_send()\n"); #endif return res; } static int inca_switch_recv(struct eth_device *dev) { int length = 0; inca_rx_descriptor_t * rx_desc; #if 0 printf("Entered inca_switch_recv()\n"); #endif for (;;) { rx_desc = (inca_rx_descriptor_t *)CKSEG1ADDR(&rx_ring[rx_new]); if (rx_desc->status.field.C == 0) { break; } #if 0 rx_ring[rx_new].params.field.HOLD = 1; #endif if (! rx_desc->status.field.Eop) { printf("Partly received packet!!!\n"); break; } length = rx_desc->status.field.NBT; rx_desc->status.word &= ~(INCA_DMA_RX_EOP | INCA_DMA_RX_SOP | INCA_DMA_RX_C); #if 0 { int i; for (i=0;i<length - 4;i++) { if (i % 16 == 0) printf("\n%04x: ", i); printf("%02X ", NetRxPackets[rx_new][i]); } printf("\n"); } #endif if (length) { #if 0 printf("Received %d bytes\n", length); #endif NetReceive((void*)CKSEG1ADDR(NetRxPackets[rx_new]), length - 4); } else { #if 1 printf("Zero length!!!\n"); #endif } ((inca_rx_descriptor_t *)CKSEG1ADDR(&rx_ring[rx_hold]))->params.field.HOLD = 0; rx_hold = rx_new; rx_new = (rx_new + 1) % NUM_RX_DESC; } #if 0 printf("Leaving inca_switch_recv()\n"); #endif return length; } static void inca_switch_halt(struct eth_device *dev) { #if 0 printf("Entered inca_switch_halt()\n"); #endif #if 1 initialized = 0; #endif #if 1 /* Disable forwarding to the CPU port. */ SW_WRITE_REG(INCA_IP_Switch_ST_PT,0xf); /* Close RxDMA channel. */ DMA_WRITE_REG(INCA_IP_DMA_DMA_RXCCR0, INCA_IP_DMA_DMA_RXCCR0_OFF); /* Close TxDMA channel. */ DMA_WRITE_REG(INCA_IP_DMA_DMA_TXCCR0, INCA_IP_DMA_DMA_TXCCR0_OFF); #endif #if 0 printf("Leaving inca_switch_halt()\n"); #endif } static void inca_init_switch_chip(void) { u32 regValue; /* To workaround a problem with collision counter * (see Errata sheet). */ SW_WRITE_REG(INCA_IP_Switch_PC_TX_CTL, 0x00000001); SW_WRITE_REG(INCA_IP_Switch_LAN_TX_CTL, 0x00000001); #if 1 /* init MDIO configuration: * MDS (Poll speed): 0x01 (4ms) * PHY_LAN_ADDR: 0x06 * PHY_PC_ADDR: 0x05 * UEP (Use External PHY): 0x00 (Internal PHY is used) * PS (Port Select): 0x00 (PT/UMM for LAN) * PT (PHY Test): 0x00 (no test mode) * UMM (Use MDIO Mode): 0x00 (state machine is disabled) */ SW_WRITE_REG(INCA_IP_Switch_MDIO_CFG, 0x4c50); /* init PHY: * SL (Auto Neg. Speed for LAN) * SP (Auto Neg. Speed for PC) * LL (Link Status for LAN) * LP (Link Status for PC) * DL (Duplex Status for LAN) * DP (Duplex Status for PC) * PL (Auto Neg. Pause Status for LAN) * PP (Auto Neg. Pause Status for PC) */ SW_WRITE_REG (INCA_IP_Switch_EPHY, 0xff); /* MDIO_ACC: * RA (Request/Ack) 0x01 (Request) * RW (Read/Write) 0x01 (Write) * PHY_ADDR 0x05 (PC) * REG_ADDR 0x00 (PHY_BCR: basic control register) * PHY_DATA 0x8000 * Reset - software reset * LB (loop back) - normal * SS (speed select) - 10 Mbit/s * ANE (auto neg. enable) - enable * PD (power down) - normal * ISO (isolate) - normal * RAN (restart auto neg.) - normal * DM (duplex mode) - half duplex * CT (collision test) - enable */ SW_WRITE_REG(INCA_IP_Switch_MDIO_ACC, 0xc0a09000); /* MDIO_ACC: * RA (Request/Ack) 0x01 (Request) * RW (Read/Write) 0x01 (Write) * PHY_ADDR 0x06 (LAN) * REG_ADDR 0x00 (PHY_BCR: basic control register) * PHY_DATA 0x8000 * Reset - software reset * LB (loop back) - normal * SS (speed select) - 10 Mbit/s * ANE (auto neg. enable) - enable * PD (power down) - normal * ISO (isolate) - normal * RAN (restart auto neg.) - normal * DM (duplex mode) - half duplex * CT (collision test) - enable */ SW_WRITE_REG(INCA_IP_Switch_MDIO_ACC, 0xc0c09000); #endif /* Make sure the CPU port is disabled for now. We * don't want packets to get stacked for us until * we enable DMA and are prepared to receive them. */ SW_WRITE_REG(INCA_IP_Switch_ST_PT,0xf); SW_READ_REG(INCA_IP_Switch_ARL_CTL, regValue); /* CRC GEN is enabled. */ regValue |= 0x00000200; SW_WRITE_REG(INCA_IP_Switch_ARL_CTL, regValue); /* ADD TAG is disabled. */ SW_READ_REG(INCA_IP_Switch_PMAC_HD_CTL, regValue); regValue &= ~0x00000002; SW_WRITE_REG(INCA_IP_Switch_PMAC_HD_CTL, regValue); } static void inca_dma_init(void) { /* Switch off all DMA channels. */ DMA_WRITE_REG(INCA_IP_DMA_DMA_RXCCR0, INCA_IP_DMA_DMA_RXCCR0_OFF); DMA_WRITE_REG(INCA_IP_DMA_DMA_RXCCR1, INCA_IP_DMA_DMA_RXCCR1_OFF); DMA_WRITE_REG(INCA_IP_DMA_DMA_TXCCR0, INCA_IP_DMA_DMA_RXCCR0_OFF); DMA_WRITE_REG(INCA_IP_DMA_DMA_TXCCR1, INCA_IP_DMA_DMA_TXCCR1_OFF); DMA_WRITE_REG(INCA_IP_DMA_DMA_TXCCR2, INCA_IP_DMA_DMA_TXCCR2_OFF); /* Setup TX channel polling time. */ DMA_WRITE_REG(INCA_IP_DMA_DMA_TXPOLL, INCA_DMA_TX_POLLING_TIME); /* Setup RX channel polling time. */ DMA_WRITE_REG(INCA_IP_DMA_DMA_RXPOLL, INCA_DMA_RX_POLLING_TIME); /* ERRATA: write reset value into the DMA RX IMR register. */ DMA_WRITE_REG(INCA_IP_DMA_DMA_RXIMR, 0xFFFFFFFF); /* Just in case: disable all transmit interrupts also. */ DMA_WRITE_REG(INCA_IP_DMA_DMA_TXIMR, 0xFFFFFFFF); DMA_WRITE_REG(INCA_IP_DMA_DMA_TXISR, 0xFFFFFFFF); DMA_WRITE_REG(INCA_IP_DMA_DMA_RXISR, 0xFFFFFFFF); } #if defined(CONFIG_INCA_IP_SWITCH_AMDIX) static int inca_amdix(void) { u32 phyReg1 = 0; u32 phyReg4 = 0; u32 phyReg5 = 0; u32 phyReg6 = 0; u32 phyReg31 = 0; u32 regEphy = 0; int mdi_flag; int retries; /* Setup GPIO pins. */ *INCA_IP_AUTO_MDIX_LAN_PORTS_DIR |= (1 << INCA_IP_AUTO_MDIX_LAN_GPIO_PIN_RXTX); *INCA_IP_AUTO_MDIX_LAN_PORTS_ALTSEL |= (1 << INCA_IP_AUTO_MDIX_LAN_GPIO_PIN_RXTX); #if 0 /* Wait for signal. */ retries = WAIT_SIGNAL_RETRIES; while (--retries) { SW_WRITE_REG(INCA_IP_Switch_MDIO_ACC, (0x1 << 31) | /* RA */ (0x0 << 30) | /* Read */ (0x6 << 21) | /* LAN */ (17 << 16)); /* PHY_MCSR */ do { SW_READ_REG(INCA_IP_Switch_MDIO_ACC, phyReg1); } while (phyReg1 & (1 << 31)); if (phyReg1 & (1 << 1)) { /* Signal detected */ break; } } if (!retries) goto Fail; #endif /* Set MDI mode. */ *INCA_IP_AUTO_MDIX_LAN_PORTS_OUT &= ~(1 << INCA_IP_AUTO_MDIX_LAN_GPIO_PIN_RXTX); mdi_flag = 1; /* Wait for link. */ retries = WAIT_LINK_RETRIES; while (--retries) { udelay(LINK_RETRY_DELAY * 1000); SW_WRITE_REG(INCA_IP_Switch_MDIO_ACC, (0x1 << 31) | /* RA */ (0x0 << 30) | /* Read */ (0x6 << 21) | /* LAN */ (1 << 16)); /* PHY_BSR */ do { SW_READ_REG(INCA_IP_Switch_MDIO_ACC, phyReg1); } while (phyReg1 & (1 << 31)); if (phyReg1 & (1 << 2)) { /* Link is up */ break; } else if (mdi_flag) { /* Set MDIX mode */ *INCA_IP_AUTO_MDIX_LAN_PORTS_OUT |= (1 << INCA_IP_AUTO_MDIX_LAN_GPIO_PIN_RXTX); mdi_flag = 0; } else { /* Set MDI mode */ *INCA_IP_AUTO_MDIX_LAN_PORTS_OUT &= ~(1 << INCA_IP_AUTO_MDIX_LAN_GPIO_PIN_RXTX); mdi_flag = 1; } } if (!retries) { goto Fail; } else { SW_WRITE_REG(INCA_IP_Switch_MDIO_ACC, (0x1 << 31) | /* RA */ (0x0 << 30) | /* Read */ (0x6 << 21) | /* LAN */ (1 << 16)); /* PHY_BSR */ do { SW_READ_REG(INCA_IP_Switch_MDIO_ACC, phyReg1); } while (phyReg1 & (1 << 31)); /* Auto-negotiation / Parallel detection complete */ if (phyReg1 & (1 << 5)) { SW_WRITE_REG(INCA_IP_Switch_MDIO_ACC, (0x1 << 31) | /* RA */ (0x0 << 30) | /* Read */ (0x6 << 21) | /* LAN */ (31 << 16)); /* PHY_SCSR */ do { SW_READ_REG(INCA_IP_Switch_MDIO_ACC, phyReg31); } while (phyReg31 & (1 << 31)); switch ((phyReg31 >> 2) & 0x7) { case INCA_SWITCH_PHY_SPEED_10H: /* 10Base-T Half-duplex */ regEphy = 0; break; case INCA_SWITCH_PHY_SPEED_10F: /* 10Base-T Full-duplex */ regEphy = INCA_IP_Switch_EPHY_DL; break; case INCA_SWITCH_PHY_SPEED_100H: /* 100Base-TX Half-duplex */ regEphy = INCA_IP_Switch_EPHY_SL; break; case INCA_SWITCH_PHY_SPEED_100F: /* 100Base-TX Full-duplex */ regEphy = INCA_IP_Switch_EPHY_SL | INCA_IP_Switch_EPHY_DL; break; } /* In case of Auto-negotiation, * update the negotiated PAUSE support status */ if (phyReg1 & (1 << 3)) { SW_WRITE_REG(INCA_IP_Switch_MDIO_ACC, (0x1 << 31) | /* RA */ (0x0 << 30) | /* Read */ (0x6 << 21) | /* LAN */ (6 << 16)); /* PHY_ANER */ do { SW_READ_REG(INCA_IP_Switch_MDIO_ACC, phyReg6); } while (phyReg6 & (1 << 31)); /* We are Autoneg-able. * Is Link partner also able to autoneg? */ if (phyReg6 & (1 << 0)) { SW_WRITE_REG(INCA_IP_Switch_MDIO_ACC, (0x1 << 31) | /* RA */ (0x0 << 30) | /* Read */ (0x6 << 21) | /* LAN */ (4 << 16)); /* PHY_ANAR */ do { SW_READ_REG(INCA_IP_Switch_MDIO_ACC, phyReg4); } while (phyReg4 & (1 << 31)); /* We advertise PAUSE capab. * Does link partner also advertise it? */ if (phyReg4 & (1 << 10)) { SW_WRITE_REG(INCA_IP_Switch_MDIO_ACC, (0x1 << 31) | /* RA */ (0x0 << 30) | /* Read */ (0x6 << 21) | /* LAN */ (5 << 16)); /* PHY_ANLPAR */ do { SW_READ_REG(INCA_IP_Switch_MDIO_ACC, phyReg5); } while (phyReg5 & (1 << 31)); /* Link partner is PAUSE capab. */ if (phyReg5 & (1 << 10)) { regEphy |= INCA_IP_Switch_EPHY_PL; } } } } /* Link is up */ regEphy |= INCA_IP_Switch_EPHY_LL; SW_WRITE_REG(INCA_IP_Switch_EPHY, regEphy); } } return 0; Fail: printf("No Link on LAN port\n"); return -1; } #endif /* CONFIG_INCA_IP_SWITCH_AMDIX */