+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * MPC8560 FCC Fast Ethernet
- * Copyright (c) 2003 Motorola,Inc.
- * Xianghua Xiao, (X.Xiao@motorola.com)
- *
- * Copyright (c) 2000 MontaVista Software, Inc. Dan Malek (dmalek@jlc.net)
- *
- * (C) Copyright 2000 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
- * Marius Groeger <mgroeger@sysgo.de>
- */
-
-/*
- * MPC8560 FCC Fast Ethernet
- * Basic ET HW initialization and packet RX/TX routines
- *
- * This code will not perform the IO port configuration. This should be
- * done in the iop_conf_t structure specific for the board.
- *
- * TODO:
- * add a PHY driver to do the negotiation
- * reflect negotiation results in FPSMR
- * look for ways to configure the board specific stuff elsewhere, eg.
- * config_xxx.h or the board directory
- */
-
-#include <common.h>
-#include <malloc.h>
-#include <asm/cpm_85xx.h>
-#include <command.h>
-#include <config.h>
-#include <net.h>
-
-#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
-#include <miiphy.h>
-#endif
-
-#if defined(CONFIG_ETHER_ON_FCC) && defined(CONFIG_CMD_NET)
-
-static struct ether_fcc_info_s
-{
- int ether_index;
- int proff_enet;
- ulong cpm_cr_enet_sblock;
- ulong cpm_cr_enet_page;
- ulong cmxfcr_mask;
- ulong cmxfcr_value;
-}
- ether_fcc_info[] =
-{
-#ifdef CONFIG_ETHER_ON_FCC1
-{
- 0,
- PROFF_FCC1,
- CPM_CR_FCC1_SBLOCK,
- CPM_CR_FCC1_PAGE,
- CONFIG_SYS_CMXFCR_MASK1,
- CONFIG_SYS_CMXFCR_VALUE1
-},
-#endif
-
-#ifdef CONFIG_ETHER_ON_FCC2
-{
- 1,
- PROFF_FCC2,
- CPM_CR_FCC2_SBLOCK,
- CPM_CR_FCC2_PAGE,
- CONFIG_SYS_CMXFCR_MASK2,
- CONFIG_SYS_CMXFCR_VALUE2
-},
-#endif
-
-#ifdef CONFIG_ETHER_ON_FCC3
-{
- 2,
- PROFF_FCC3,
- CPM_CR_FCC3_SBLOCK,
- CPM_CR_FCC3_PAGE,
- CONFIG_SYS_CMXFCR_MASK3,
- CONFIG_SYS_CMXFCR_VALUE3
-},
-#endif
-};
-
-/*---------------------------------------------------------------------*/
-
-/* Maximum input DMA size. Must be a should(?) be a multiple of 4. */
-#define PKT_MAXDMA_SIZE 1520
-
-/* The FCC stores dest/src/type, data, and checksum for receive packets. */
-#define PKT_MAXBUF_SIZE 1518
-#define PKT_MINBUF_SIZE 64
-
-/* Maximum input buffer size. Must be a multiple of 32. */
-#define PKT_MAXBLR_SIZE 1536
-
-#define TOUT_LOOP 1000000
-
-#define TX_BUF_CNT 2
-
-static uint rxIdx; /* index of the current RX buffer */
-static uint txIdx; /* index of the current TX buffer */
-
-/*
- * FCC Ethernet Tx and Rx buffer descriptors.
- * Provide for Double Buffering
- * Note: PKTBUFSRX is defined in net.h
- */
-
-typedef volatile struct rtxbd {
- cbd_t rxbd[PKTBUFSRX];
- cbd_t txbd[TX_BUF_CNT];
-} RTXBD;
-
-/* Good news: the FCC supports external BDs! */
-#ifdef __GNUC__
-static RTXBD rtx __attribute__ ((aligned(8)));
-#else
-#error "rtx must be 64-bit aligned"
-#endif
-
-#undef ET_DEBUG
-
-static int fec_send(struct eth_device *dev, void *packet, int length)
-{
- int i = 0;
- int result = 0;
-
- if (length <= 0) {
- printf("fec: bad packet size: %d\n", length);
- goto out;
- }
-
- for(i=0; rtx.txbd[txIdx].cbd_sc & BD_ENET_TX_READY; i++) {
- if (i >= TOUT_LOOP) {
- printf("fec: tx buffer not ready\n");
- goto out;
- }
- }
-
- rtx.txbd[txIdx].cbd_bufaddr = (uint)packet;
- rtx.txbd[txIdx].cbd_datlen = length;
- rtx.txbd[txIdx].cbd_sc |= (BD_ENET_TX_READY | BD_ENET_TX_LAST | \
- BD_ENET_TX_TC | BD_ENET_TX_PAD);
-
- for(i=0; rtx.txbd[txIdx].cbd_sc & BD_ENET_TX_READY; i++) {
- if (i >= TOUT_LOOP) {
- printf("fec: tx error\n");
- goto out;
- }
- }
-
-#ifdef ET_DEBUG
- printf("cycles: 0x%x txIdx=0x%04x status: 0x%04x\n", i, txIdx,rtx.txbd[txIdx].cbd_sc);
- printf("packets at 0x%08x, length_in_bytes=0x%x\n",(uint)packet,length);
- for(i=0;i<(length/16 + 1);i++) {
- printf("%08x %08x %08x %08x\n",*((uint *)rtx.txbd[txIdx].cbd_bufaddr+i*4),\
- *((uint *)rtx.txbd[txIdx].cbd_bufaddr + i*4 + 1),*((uint *)rtx.txbd[txIdx].cbd_bufaddr + i*4 + 2), \
- *((uint *)rtx.txbd[txIdx].cbd_bufaddr + i*4 + 3));
- }
-#endif
-
- /* return only status bits */
- result = rtx.txbd[txIdx].cbd_sc & BD_ENET_TX_STATS;
- txIdx = (txIdx + 1) % TX_BUF_CNT;
-
-out:
- return result;
-}
-
-static int fec_recv(struct eth_device* dev)
-{
- int length;
-
- for (;;)
- {
- if (rtx.rxbd[rxIdx].cbd_sc & BD_ENET_RX_EMPTY) {
- length = -1;
- break; /* nothing received - leave for() loop */
- }
- length = rtx.rxbd[rxIdx].cbd_datlen;
-
- if (rtx.rxbd[rxIdx].cbd_sc & 0x003f) {
- printf("fec: rx error %04x\n", rtx.rxbd[rxIdx].cbd_sc);
- }
- else {
- /* Pass the packet up to the protocol layers. */
- net_process_received_packet(net_rx_packets[rxIdx], length - 4);
- }
-
-
- /* Give the buffer back to the FCC. */
- rtx.rxbd[rxIdx].cbd_datlen = 0;
-
- /* wrap around buffer index when necessary */
- if ((rxIdx + 1) >= PKTBUFSRX) {
- rtx.rxbd[PKTBUFSRX - 1].cbd_sc = (BD_ENET_RX_WRAP | BD_ENET_RX_EMPTY);
- rxIdx = 0;
- }
- else {
- rtx.rxbd[rxIdx].cbd_sc = BD_ENET_RX_EMPTY;
- rxIdx++;
- }
- }
- return length;
-}
-
-
-static int fec_init(struct eth_device* dev, struct bd_info *bis)
-{
- struct ether_fcc_info_s * info = dev->priv;
- int i;
- volatile ccsr_cpm_t *cpm = (ccsr_cpm_t *)CONFIG_SYS_MPC85xx_CPM_ADDR;
- volatile ccsr_cpm_cp_t *cp = &(cpm->im_cpm_cp);
- fcc_enet_t *pram_ptr;
- unsigned long mem_addr;
-
-#if 0
- mii_discover_phy();
-#endif
-
- /* 28.9 - (1-2): ioports have been set up already */
-
- /* 28.9 - (3): connect FCC's tx and rx clocks */
- cpm->im_cpm_mux.cmxuar = 0; /* ATM */
- cpm->im_cpm_mux.cmxfcr = (cpm->im_cpm_mux.cmxfcr & ~info->cmxfcr_mask) |
- info->cmxfcr_value;
-
- /* 28.9 - (4): GFMR: disable tx/rx, CCITT CRC, set Mode Ethernet */
- if(info->ether_index == 0) {
- cpm->im_cpm_fcc1.gfmr = FCC_GFMR_MODE_ENET | FCC_GFMR_TCRC_32;
- } else if (info->ether_index == 1) {
- cpm->im_cpm_fcc2.gfmr = FCC_GFMR_MODE_ENET | FCC_GFMR_TCRC_32;
- } else if (info->ether_index == 2) {
- cpm->im_cpm_fcc3.gfmr = FCC_GFMR_MODE_ENET | FCC_GFMR_TCRC_32;
- }
-
- /* 28.9 - (5): FPSMR: enable full duplex, select CCITT CRC for Ethernet,MII */
- if(info->ether_index == 0) {
- cpm->im_cpm_fcc1.fpsmr = CONFIG_SYS_FCC_PSMR | FCC_PSMR_ENCRC;
- } else if (info->ether_index == 1){
- cpm->im_cpm_fcc2.fpsmr = CONFIG_SYS_FCC_PSMR | FCC_PSMR_ENCRC;
- } else if (info->ether_index == 2){
- cpm->im_cpm_fcc3.fpsmr = CONFIG_SYS_FCC_PSMR | FCC_PSMR_ENCRC;
- }
-
- /* 28.9 - (6): FDSR: Ethernet Syn */
- if(info->ether_index == 0) {
- cpm->im_cpm_fcc1.fdsr = 0xD555;
- } else if (info->ether_index == 1) {
- cpm->im_cpm_fcc2.fdsr = 0xD555;
- } else if (info->ether_index == 2) {
- cpm->im_cpm_fcc3.fdsr = 0xD555;
- }
-
- /* reset indeces to current rx/tx bd (see eth_send()/eth_rx()) */
- rxIdx = 0;
- txIdx = 0;
-
- /* Setup Receiver Buffer Descriptors */
- for (i = 0; i < PKTBUFSRX; i++)
- {
- rtx.rxbd[i].cbd_sc = BD_ENET_RX_EMPTY;
- rtx.rxbd[i].cbd_datlen = 0;
- rtx.rxbd[i].cbd_bufaddr = (uint)net_rx_packets[i];
- }
- rtx.rxbd[PKTBUFSRX - 1].cbd_sc |= BD_ENET_RX_WRAP;
-
- /* Setup Ethernet Transmitter Buffer Descriptors */
- for (i = 0; i < TX_BUF_CNT; i++)
- {
- rtx.txbd[i].cbd_sc = 0;
- rtx.txbd[i].cbd_datlen = 0;
- rtx.txbd[i].cbd_bufaddr = 0;
- }
- rtx.txbd[TX_BUF_CNT - 1].cbd_sc |= BD_ENET_TX_WRAP;
-
- /* 28.9 - (7): initialize parameter ram */
- pram_ptr = (fcc_enet_t *)&(cpm->im_dprambase[info->proff_enet]);
-
- /* clear whole structure to make sure all reserved fields are zero */
- memset((void*)pram_ptr, 0, sizeof(fcc_enet_t));
-
- /*
- * common Parameter RAM area
- *
- * Allocate space in the reserved FCC area of DPRAM for the
- * internal buffers. No one uses this space (yet), so we
- * can do this. Later, we will add resource management for
- * this area.
- * CPM_FCC_SPECIAL_BASE: 0xB000 for MPC8540, MPC8560
- * 0x9000 for MPC8541, MPC8555
- */
- mem_addr = CPM_FCC_SPECIAL_BASE + ((info->ether_index) * 64);
- pram_ptr->fen_genfcc.fcc_riptr = mem_addr;
- pram_ptr->fen_genfcc.fcc_tiptr = mem_addr+32;
- /*
- * Set maximum bytes per receive buffer.
- * It must be a multiple of 32.
- */
- pram_ptr->fen_genfcc.fcc_mrblr = PKT_MAXBLR_SIZE; /* 1536 */
- /* localbus SDRAM should be preferred */
- pram_ptr->fen_genfcc.fcc_rstate = (CPMFCR_GBL | CPMFCR_EB |
- CONFIG_SYS_CPMFCR_RAMTYPE) << 24;
- pram_ptr->fen_genfcc.fcc_rbase = (unsigned int)(&rtx.rxbd[rxIdx]);
- pram_ptr->fen_genfcc.fcc_rbdstat = 0;
- pram_ptr->fen_genfcc.fcc_rbdlen = 0;
- pram_ptr->fen_genfcc.fcc_rdptr = 0;
- /* localbus SDRAM should be preferred */
- pram_ptr->fen_genfcc.fcc_tstate = (CPMFCR_GBL | CPMFCR_EB |
- CONFIG_SYS_CPMFCR_RAMTYPE) << 24;
- pram_ptr->fen_genfcc.fcc_tbase = (unsigned int)(&rtx.txbd[txIdx]);
- pram_ptr->fen_genfcc.fcc_tbdstat = 0;
- pram_ptr->fen_genfcc.fcc_tbdlen = 0;
- pram_ptr->fen_genfcc.fcc_tdptr = 0;
-
- /* protocol-specific area */
- pram_ptr->fen_statbuf = 0x0;
- pram_ptr->fen_cmask = 0xdebb20e3; /* CRC mask */
- pram_ptr->fen_cpres = 0xffffffff; /* CRC preset */
- pram_ptr->fen_crcec = 0;
- pram_ptr->fen_alec = 0;
- pram_ptr->fen_disfc = 0;
- pram_ptr->fen_retlim = 15; /* Retry limit threshold */
- pram_ptr->fen_retcnt = 0;
- pram_ptr->fen_pper = 0;
- pram_ptr->fen_boffcnt = 0;
- pram_ptr->fen_gaddrh = 0;
- pram_ptr->fen_gaddrl = 0;
- pram_ptr->fen_mflr = PKT_MAXBUF_SIZE; /* maximum frame length register */
- /*
- * Set Ethernet station address.
- *
- * This is supplied in the board information structure, so we
- * copy that into the controller.
- * So far we have only been given one Ethernet address. We make
- * it unique by setting a few bits in the upper byte of the
- * non-static part of the address.
- */
-#define ea eth_get_ethaddr()
- pram_ptr->fen_paddrh = (ea[5] << 8) + ea[4];
- pram_ptr->fen_paddrm = (ea[3] << 8) + ea[2];
- pram_ptr->fen_paddrl = (ea[1] << 8) + ea[0];
-#undef ea
- pram_ptr->fen_ibdcount = 0;
- pram_ptr->fen_ibdstart = 0;
- pram_ptr->fen_ibdend = 0;
- pram_ptr->fen_txlen = 0;
- pram_ptr->fen_iaddrh = 0; /* disable hash */
- pram_ptr->fen_iaddrl = 0;
- pram_ptr->fen_minflr = PKT_MINBUF_SIZE; /* minimum frame length register: 64 */
- /* pad pointer. use tiptr since we don't need a specific padding char */
- pram_ptr->fen_padptr = pram_ptr->fen_genfcc.fcc_tiptr;
- pram_ptr->fen_maxd1 = PKT_MAXDMA_SIZE; /* maximum DMA1 length:1520 */
- pram_ptr->fen_maxd2 = PKT_MAXDMA_SIZE; /* maximum DMA2 length:1520 */
-
-#if defined(ET_DEBUG)
- printf("parm_ptr(0xff788500) = %p\n",pram_ptr);
- printf("pram_ptr->fen_genfcc.fcc_rbase %08x\n",
- pram_ptr->fen_genfcc.fcc_rbase);
- printf("pram_ptr->fen_genfcc.fcc_tbase %08x\n",
- pram_ptr->fen_genfcc.fcc_tbase);
-#endif
-
- /* 28.9 - (8)(9): clear out events in FCCE */
- /* 28.9 - (9): FCCM: mask all events */
- if(info->ether_index == 0) {
- cpm->im_cpm_fcc1.fcce = ~0x0;
- cpm->im_cpm_fcc1.fccm = 0;
- } else if (info->ether_index == 1) {
- cpm->im_cpm_fcc2.fcce = ~0x0;
- cpm->im_cpm_fcc2.fccm = 0;
- } else if (info->ether_index == 2) {
- cpm->im_cpm_fcc3.fcce = ~0x0;
- cpm->im_cpm_fcc3.fccm = 0;
- }
-
- /* 28.9 - (10-12): we don't use ethernet interrupts */
-
- /* 28.9 - (13)
- *
- * Let's re-initialize the channel now. We have to do it later
- * than the manual describes because we have just now finished
- * the BD initialization.
- */
- cp->cpcr = mk_cr_cmd(info->cpm_cr_enet_page,
- info->cpm_cr_enet_sblock,
- 0x0c,
- CPM_CR_INIT_TRX) | CPM_CR_FLG;
- do {
- __asm__ __volatile__ ("eieio");
- } while (cp->cpcr & CPM_CR_FLG);
-
- /* 28.9 - (14): enable tx/rx in gfmr */
- if(info->ether_index == 0) {
- cpm->im_cpm_fcc1.gfmr |= FCC_GFMR_ENT | FCC_GFMR_ENR;
- } else if (info->ether_index == 1) {
- cpm->im_cpm_fcc2.gfmr |= FCC_GFMR_ENT | FCC_GFMR_ENR;
- } else if (info->ether_index == 2) {
- cpm->im_cpm_fcc3.gfmr |= FCC_GFMR_ENT | FCC_GFMR_ENR;
- }
-
- return 1;
-}
-
-static void fec_halt(struct eth_device* dev)
-{
- struct ether_fcc_info_s * info = dev->priv;
- volatile ccsr_cpm_t *cpm = (ccsr_cpm_t *)CONFIG_SYS_MPC85xx_CPM_ADDR;
-
- /* write GFMR: disable tx/rx */
- if(info->ether_index == 0) {
- cpm->im_cpm_fcc1.gfmr &= ~(FCC_GFMR_ENT | FCC_GFMR_ENR);
- } else if(info->ether_index == 1) {
- cpm->im_cpm_fcc2.gfmr &= ~(FCC_GFMR_ENT | FCC_GFMR_ENR);
- } else if(info->ether_index == 2) {
- cpm->im_cpm_fcc3.gfmr &= ~(FCC_GFMR_ENT | FCC_GFMR_ENR);
- }
-}
-
-int fec_initialize(struct bd_info *bis)
-{
- struct eth_device* dev;
- int i;
-
- for (i = 0; i < ARRAY_SIZE(ether_fcc_info); i++)
- {
- dev = (struct eth_device*) malloc(sizeof *dev);
- memset(dev, 0, sizeof *dev);
-
- sprintf(dev->name, "FCC%d",
- ether_fcc_info[i].ether_index + 1);
- dev->priv = ðer_fcc_info[i];
- dev->init = fec_init;
- dev->halt = fec_halt;
- dev->send = fec_send;
- dev->recv = fec_recv;
-
- eth_register(dev);
-
-#if (defined(CONFIG_MII) || defined(CONFIG_CMD_MII)) \
- && defined(CONFIG_BITBANGMII)
- int retval;
- struct mii_dev *mdiodev = mdio_alloc();
- if (!mdiodev)
- return -ENOMEM;
- strncpy(mdiodev->name, dev->name, MDIO_NAME_LEN);
- mdiodev->read = bb_miiphy_read;
- mdiodev->write = bb_miiphy_write;
-
- retval = mdio_register(mdiodev);
- if (retval < 0)
- return retval;
-#endif
- }
-
- return 1;
-}
-
-#endif
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