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Diffstat (limited to 'drivers/ne2000.c')
| -rw-r--r-- | drivers/ne2000.c | 963 |
1 files changed, 963 insertions, 0 deletions
diff --git a/drivers/ne2000.c b/drivers/ne2000.c new file mode 100644 index 0000000000..b7ed876165 --- /dev/null +++ b/drivers/ne2000.c @@ -0,0 +1,963 @@ +/* +Ported to U-Boot by Christian Pellegrin <chri@ascensit.com> + +Based on sources from the Linux kernel (pcnet_cs.c, 8390.h) and +eCOS(if_dp83902a.c, if_dp83902a.h). Both of these 2 wonderful world +are GPL, so this is, of course, GPL. + + +========================================================================== + +dev/if_dp83902a.c + +Ethernet device driver for NS DP83902a ethernet controller + +========================================================================== +####ECOSGPLCOPYRIGHTBEGIN#### +------------------------------------------- +This file is part of eCos, the Embedded Configurable Operating System. +Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc. + +eCos 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 or (at your option) any later version. + +eCos 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 eCos; if not, write to the Free Software Foundation, Inc., +59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + +As a special exception, if other files instantiate templates or use macros +or inline functions from this file, or you compile this file and link it +with other works to produce a work based on this file, this file does not +by itself cause the resulting work to be covered by the GNU General Public +License. However the source code for this file must still be made available +in accordance with section (3) of the GNU General Public License. + +This exception does not invalidate any other reasons why a work based on +this file might be covered by the GNU General Public License. + +Alternative licenses for eCos may be arranged by contacting Red Hat, Inc. +at http://sources.redhat.com/ecos/ecos-license/ +------------------------------------------- +####ECOSGPLCOPYRIGHTEND#### +####BSDCOPYRIGHTBEGIN#### + +------------------------------------------- + +Portions of this software may have been derived from OpenBSD or other sources, +and are covered by the appropriate copyright disclaimers included herein. + +------------------------------------------- + +####BSDCOPYRIGHTEND#### +========================================================================== +#####DESCRIPTIONBEGIN#### + +Author(s): gthomas +Contributors: gthomas, jskov, rsandifo +Date: 2001-06-13 +Purpose: +Description: + +FIXME: Will fail if pinged with large packets (1520 bytes) +Add promisc config +Add SNMP + +####DESCRIPTIONEND#### + + +========================================================================== + +*/ + +#include <common.h> +#include <command.h> +#include <net.h> +#include <malloc.h> + +#ifdef CONFIG_DRIVER_NE2000 + +/* wor around udelay resetting OCR */ +static void my_udelay(long us) { + long tmo; + + tmo = get_timer (0) + us * CFG_HZ / 1000000; /* will this be much greater than 0 ? */ + while (get_timer (0) < tmo); +} + +#define mdelay(n) my_udelay((n)*1000) + +/* forward definition of function used for the uboot interface */ +void uboot_push_packet_len(int len); +void uboot_push_tx_done(int key, int val); + +/* timeout for tx/rx in s */ +#define TOUT 5 + +#define ETHER_ADDR_LEN 6 + +/* + ------------------------------------------------------------------------ + Debugging details + + Set to perms of: + 0 disables all debug output + 1 for process debug output + 2 for added data IO output: get_reg, put_reg + 4 for packet allocation/free output + 8 for only startup status, so we can tell we're installed OK +*/ +/*#define DEBUG 0xf*/ +#define DEBUG 0 + +#if DEBUG & 1 +#define DEBUG_FUNCTION() do { printf("%s\n", __FUNCTION__); } while (0) +#define DEBUG_LINE() do { printf("%d\n", __LINE__); } while (0) +#else +#define DEBUG_FUNCTION() do {} while(0) +#define DEBUG_LINE() do {} while(0) +#endif + +#include "ne2000.h" + +#if DEBUG & 1 +#define PRINTK(args...) printf(args) +#else +#define PRINTK(args...) +#endif + +static dp83902a_priv_data_t nic; /* just one instance of the card supported */ + +static bool +dp83902a_init(void) +{ + dp83902a_priv_data_t *dp = &nic; + cyg_uint8* base; + int i; + + DEBUG_FUNCTION(); + + base = dp->base; + if (!base) return false; /* No device found */ + + DEBUG_LINE(); + + /* Prepare ESA */ + DP_OUT(base, DP_CR, DP_CR_NODMA | DP_CR_PAGE1); /* Select page 1 */ + /* Use the address from the serial EEPROM */ + for (i = 0; i < 6; i++) + DP_IN(base, DP_P1_PAR0+i, dp->esa[i]); + DP_OUT(base, DP_CR, DP_CR_NODMA | DP_CR_PAGE0); /* Select page 0 */ + + printf("NE2000 - %s ESA: %02x:%02x:%02x:%02x:%02x:%02x\n", + "eeprom", + dp->esa[0], + dp->esa[1], + dp->esa[2], + dp->esa[3], + dp->esa[4], + dp->esa[5] ); + + return true; +} + +static void +dp83902a_stop(void) +{ + dp83902a_priv_data_t *dp = &nic; + cyg_uint8 *base = dp->base; + + DEBUG_FUNCTION(); + + DP_OUT(base, DP_CR, DP_CR_PAGE0 | DP_CR_NODMA | DP_CR_STOP); /* Brutal */ + DP_OUT(base, DP_ISR, 0xFF); /* Clear any pending interrupts */ + DP_OUT(base, DP_IMR, 0x00); /* Disable all interrupts */ + + dp->running = false; +} + +/* + This function is called to "start up" the interface. It may be called + multiple times, even when the hardware is already running. It will be + called whenever something "hardware oriented" changes and should leave + the hardware ready to send/receive packets. +*/ +static void +dp83902a_start(unsigned char * enaddr) +{ + dp83902a_priv_data_t *dp = &nic; + cyg_uint8 *base = dp->base; + int i; + + DEBUG_FUNCTION(); + + DP_OUT(base, DP_CR, DP_CR_PAGE0 | DP_CR_NODMA | DP_CR_STOP); /* Brutal */ + DP_OUT(base, DP_DCR, DP_DCR_INIT); + DP_OUT(base, DP_RBCH, 0); /* Remote byte count */ + DP_OUT(base, DP_RBCL, 0); + DP_OUT(base, DP_RCR, DP_RCR_MON); /* Accept no packets */ + DP_OUT(base, DP_TCR, DP_TCR_LOCAL); /* Transmitter [virtually] off */ + DP_OUT(base, DP_TPSR, dp->tx_buf1); /* Transmitter start page */ + dp->tx1 = dp->tx2 = 0; + dp->tx_next = dp->tx_buf1; + dp->tx_started = false; + DP_OUT(base, DP_PSTART, dp->rx_buf_start); /* Receive ring start page */ + DP_OUT(base, DP_BNDRY, dp->rx_buf_end-1); /* Receive ring boundary */ + DP_OUT(base, DP_PSTOP, dp->rx_buf_end); /* Receive ring end page */ + dp->rx_next = dp->rx_buf_start-1; + DP_OUT(base, DP_ISR, 0xFF); /* Clear any pending interrupts */ + DP_OUT(base, DP_IMR, DP_IMR_All); /* Enable all interrupts */ + DP_OUT(base, DP_CR, DP_CR_NODMA | DP_CR_PAGE1 | DP_CR_STOP); /* Select page 1 */ + DP_OUT(base, DP_P1_CURP, dp->rx_buf_start); /* Current page - next free page for Rx */ + for (i = 0; i < ETHER_ADDR_LEN; i++) { + DP_OUT(base, DP_P1_PAR0+i, enaddr[i]); + } + /* Enable and start device */ + DP_OUT(base, DP_CR, DP_CR_PAGE0 | DP_CR_NODMA | DP_CR_START); + DP_OUT(base, DP_TCR, DP_TCR_NORMAL); /* Normal transmit operations */ + DP_OUT(base, DP_RCR, DP_RCR_AB); /* Accept broadcast, no errors, no multicast */ + dp->running = true; +} + +/* + This routine is called to start the transmitter. It is split out from the + data handling routine so it may be called either when data becomes first + available or when an Tx interrupt occurs +*/ + +static void +dp83902a_start_xmit(int start_page, int len) +{ + dp83902a_priv_data_t *dp = (dp83902a_priv_data_t *) &nic; + cyg_uint8 *base = dp->base; + + DEBUG_FUNCTION(); + +#if DEBUG & 1 + printf("Tx pkt %d len %d\n", start_page, len); + if (dp->tx_started) + printf("TX already started?!?\n"); +#endif + + DP_OUT(base, DP_ISR, (DP_ISR_TxP | DP_ISR_TxE)); + DP_OUT(base, DP_CR, DP_CR_PAGE0 | DP_CR_NODMA | DP_CR_START); + DP_OUT(base, DP_TBCL, len & 0xFF); + DP_OUT(base, DP_TBCH, len >> 8); + DP_OUT(base, DP_TPSR, start_page); + DP_OUT(base, DP_CR, DP_CR_NODMA | DP_CR_TXPKT | DP_CR_START); + + dp->tx_started = true; +} + +/* + This routine is called to send data to the hardware. It is known a-priori + that there is free buffer space (dp->tx_next). +*/ +static void +dp83902a_send(unsigned char *data, int total_len, unsigned long key) +{ + struct dp83902a_priv_data *dp = (struct dp83902a_priv_data *) &nic; + cyg_uint8 *base = dp->base; + int len, start_page, pkt_len, i, isr; +#if DEBUG & 4 + int dx; +#endif + + DEBUG_FUNCTION(); + + len = pkt_len = total_len; + if (pkt_len < IEEE_8023_MIN_FRAME) pkt_len = IEEE_8023_MIN_FRAME; + + start_page = dp->tx_next; + if (dp->tx_next == dp->tx_buf1) { + dp->tx1 = start_page; + dp->tx1_len = pkt_len; + dp->tx1_key = key; + dp->tx_next = dp->tx_buf2; + } else { + dp->tx2 = start_page; + dp->tx2_len = pkt_len; + dp->tx2_key = key; + dp->tx_next = dp->tx_buf1; + } + +#if DEBUG & 5 + printf("TX prep page %d len %d\n", start_page, pkt_len); +#endif + + DP_OUT(base, DP_ISR, DP_ISR_RDC); /* Clear end of DMA */ + { + /* Dummy read. The manual sez something slightly different, */ + /* but the code is extended a bit to do what Hitachi's monitor */ + /* does (i.e., also read data). */ + + cyg_uint16 tmp; + int len = 1; + + DP_OUT(base, DP_RSAL, 0x100-len); + DP_OUT(base, DP_RSAH, (start_page-1) & 0xff); + DP_OUT(base, DP_RBCL, len); + DP_OUT(base, DP_RBCH, 0); + DP_OUT(base, DP_CR, DP_CR_PAGE0 | DP_CR_RDMA | DP_CR_START); + DP_IN_DATA(dp->data, tmp); + } + +#ifdef CYGHWR_NS_DP83902A_PLF_BROKEN_TX_DMA + /* Stall for a bit before continuing to work around random data */ + /* corruption problems on some platforms. */ + CYGACC_CALL_IF_DELAY_US(1); +#endif + + /* Send data to device buffer(s) */ + DP_OUT(base, DP_RSAL, 0); + DP_OUT(base, DP_RSAH, start_page); + DP_OUT(base, DP_RBCL, pkt_len & 0xFF); + DP_OUT(base, DP_RBCH, pkt_len >> 8); + DP_OUT(base, DP_CR, DP_CR_WDMA | DP_CR_START); + + /* Put data into buffer */ +#if DEBUG & 4 + printf(" sg buf %08lx len %08x\n ", (unsigned long) data, len); + dx = 0; +#endif + while (len > 0) { +#if DEBUG & 4 + printf(" %02x", *data); + if (0 == (++dx % 16)) printf("\n "); +#endif + DP_OUT_DATA(dp->data, *data++); + len--; + } +#if DEBUG & 4 + printf("\n"); +#endif + if (total_len < pkt_len) { +#if DEBUG & 4 + printf(" + %d bytes of padding\n", pkt_len - total_len); +#endif + /* Padding to 802.3 length was required */ + for (i = total_len; i < pkt_len;) { + i++; + DP_OUT_DATA(dp->data, 0); + } + } + +#ifdef CYGHWR_NS_DP83902A_PLF_BROKEN_TX_DMA + /* After last data write, delay for a bit before accessing the */ + /* device again, or we may get random data corruption in the last */ + /* datum (on some platforms). */ + CYGACC_CALL_IF_DELAY_US(1); +#endif + + /* Wait for DMA to complete */ + do { + DP_IN(base, DP_ISR, isr); + } while ((isr & DP_ISR_RDC) == 0); + /* Then disable DMA */ + DP_OUT(base, DP_CR, DP_CR_PAGE0 | DP_CR_NODMA | DP_CR_START); + + /* Start transmit if not already going */ + if (!dp->tx_started) { + if (start_page == dp->tx1) { + dp->tx_int = 1; /* Expecting interrupt from BUF1 */ + } else { + dp->tx_int = 2; /* Expecting interrupt from BUF2 */ + } + dp83902a_start_xmit(start_page, pkt_len); + } +} + +/* + This function is called when a packet has been received. It's job is + to prepare to unload the packet from the hardware. Once the length of + the packet is known, the upper layer of the driver can be told. When + the upper layer is ready to unload the packet, the internal function + 'dp83902a_recv' will be called to actually fetch it from the hardware. +*/ +static void +dp83902a_RxEvent(void) +{ + struct dp83902a_priv_data *dp = (struct dp83902a_priv_data *) &nic; + cyg_uint8 *base = dp->base; + unsigned char rsr; + unsigned char rcv_hdr[4]; + int i, len, pkt, cur; + + DEBUG_FUNCTION(); + + DP_IN(base, DP_RSR, rsr); + while (true) { + /* Read incoming packet header */ + DP_OUT(base, DP_CR, DP_CR_PAGE1 | DP_CR_NODMA | DP_CR_START); + DP_IN(base, DP_P1_CURP, cur); + DP_OUT(base, DP_P1_CR, DP_CR_PAGE0 | DP_CR_NODMA | DP_CR_START); + DP_IN(base, DP_BNDRY, pkt); + + pkt += 1; + if (pkt == dp->rx_buf_end) + pkt = dp->rx_buf_start; + + if (pkt == cur) { + break; + } + DP_OUT(base, DP_RBCL, sizeof(rcv_hdr)); + DP_OUT(base, DP_RBCH, 0); + DP_OUT(base, DP_RSAL, 0); + DP_OUT(base, DP_RSAH, pkt); + if (dp->rx_next == pkt) { + if (cur == dp->rx_buf_start) + DP_OUT(base, DP_BNDRY, dp->rx_buf_end-1); + else + DP_OUT(base, DP_BNDRY, cur-1); /* Update pointer */ + return; + } + dp->rx_next = pkt; + DP_OUT(base, DP_ISR, DP_ISR_RDC); /* Clear end of DMA */ + DP_OUT(base, DP_CR, DP_CR_RDMA | DP_CR_START); +#ifdef CYGHWR_NS_DP83902A_PLF_BROKEN_RX_DMA + CYGACC_CALL_IF_DELAY_US(10); +#endif + + for (i = 0; i < sizeof(rcv_hdr);) { + DP_IN_DATA(dp->data, rcv_hdr[i++]); + } + +#if DEBUG & 5 + printf("rx hdr %02x %02x %02x %02x\n", + rcv_hdr[0], rcv_hdr[1], rcv_hdr[2], rcv_hdr[3]); +#endif + len = ((rcv_hdr[3] << 8) | rcv_hdr[2]) - sizeof(rcv_hdr); + uboot_push_packet_len(len); + if (rcv_hdr[1] == dp->rx_buf_start) + DP_OUT(base, DP_BNDRY, dp->rx_buf_end-1); + else + DP_OUT(base, DP_BNDRY, rcv_hdr[1]-1); /* Update pointer */ + } +} + +/* + This function is called as a result of the "eth_drv_recv()" call above. + It's job is to actually fetch data for a packet from the hardware once + memory buffers have been allocated for the packet. Note that the buffers + may come in pieces, using a scatter-gather list. This allows for more + efficient processing in the upper layers of the stack. +*/ +static void +dp83902a_recv(unsigned char *data, int len) +{ + struct dp83902a_priv_data *dp = (struct dp83902a_priv_data *) &nic; + cyg_uint8 *base = dp->base; + int i, mlen; + cyg_uint8 saved_char = 0; + bool saved; +#if DEBUG & 4 + int dx; +#endif + + DEBUG_FUNCTION(); + +#if DEBUG & 5 + printf("Rx packet %d length %d\n", dp->rx_next, len); +#endif + + /* Read incoming packet data */ + DP_OUT(base, DP_CR, DP_CR_PAGE0 | DP_CR_NODMA | DP_CR_START); + DP_OUT(base, DP_RBCL, len & 0xFF); + DP_OUT(base, DP_RBCH, len >> 8); + DP_OUT(base, DP_RSAL, 4); /* Past header */ + DP_OUT(base, DP_RSAH, dp->rx_next); + DP_OUT(base, DP_ISR, DP_ISR_RDC); /* Clear end of DMA */ + DP_OUT(base, DP_CR, DP_CR_RDMA | DP_CR_START); +#ifdef CYGHWR_NS_DP83902A_PLF_BROKEN_RX_DMA + CYGACC_CALL_IF_DELAY_US(10); +#endif + + saved = false; + for (i = 0; i < 1; i++) { + if (data) { + mlen = len; +#if DEBUG & 4 + printf(" sg buf %08lx len %08x \n", (unsigned long) data, mlen); + dx = 0; +#endif + while (0 < mlen) { + /* Saved byte from previous loop? */ + if (saved) { + *data++ = saved_char; + mlen--; + saved = false; + continue; + } + + { + cyg_uint8 tmp; + DP_IN_DATA(dp->data, tmp); +#if DEBUG & 4 + printf(" %02x", tmp); + if (0 == (++dx % 16)) printf("\n "); +#endif + *data++ = tmp;; + mlen--; + } + } +#if DEBUG & 4 + printf("\n"); +#endif + } + } +} + +static void +dp83902a_TxEvent(void) +{ + struct dp83902a_priv_data *dp = (struct dp83902a_priv_data *) &nic; + cyg_uint8 *base = dp->base; + unsigned char tsr; + unsigned long key; + + DEBUG_FUNCTION(); + + DP_IN(base, DP_TSR, tsr); + if (dp->tx_int == 1) { + key = dp->tx1_key; + dp->tx1 = 0; + } else { + key = dp->tx2_key; + dp->tx2 = 0; + } + /* Start next packet if one is ready */ + dp->tx_started = false; + if (dp->tx1) { + dp83902a_start_xmit(dp->tx1, dp->tx1_len); + dp->tx_int = 1; + } else if (dp->tx2) { + dp83902a_start_xmit(dp->tx2, dp->tx2_len); + dp->tx_int = 2; + } else { + dp->tx_int = 0; + } + /* Tell higher level we sent this packet */ + uboot_push_tx_done(key, 0); +} + +/* Read the tally counters to clear them. Called in response to a CNT */ +/* interrupt. */ +static void +dp83902a_ClearCounters(void) +{ + struct dp83902a_priv_data *dp = (struct dp83902a_priv_data *) &nic; + cyg_uint8 *base = dp->base; + cyg_uint8 cnt1, cnt2, cnt3; + + DP_IN(base, DP_FER, cnt1); + DP_IN(base, DP_CER, cnt2); + DP_IN(base, DP_MISSED, cnt3); + DP_OUT(base, DP_ISR, DP_ISR_CNT); +} + +/* Deal with an overflow condition. This code follows the procedure set */ +/* out in section 7.0 of the datasheet. */ +static void +dp83902a_Overflow(void) +{ + struct dp83902a_priv_data *dp = (struct dp83902a_priv_data *)&nic; + cyg_uint8 *base = dp->base; + cyg_uint8 isr; + + /* Issue a stop command and wait 1.6ms for it to complete. */ + DP_OUT(base, DP_CR, DP_CR_STOP | DP_CR_NODMA); + CYGACC_CALL_IF_DELAY_US(1600); + + /* Clear the remote byte counter registers. */ + DP_OUT(base, DP_RBCL, 0); + DP_OUT(base, DP_RBCH, 0); + + /* Enter loopback mode while we clear the buffer. */ + DP_OUT(base, DP_TCR, DP_TCR_LOCAL); + DP_OUT(base, DP_CR, DP_CR_START | DP_CR_NODMA); + + /* Read in as many packets as we can and acknowledge any and receive */ + /* interrupts. Since the buffer has overflowed, a receive event of */ + /* some kind will have occured. */ + dp83902a_RxEvent(); + DP_OUT(base, DP_ISR, DP_ISR_RxP|DP_ISR_RxE); + + /* Clear the overflow condition and leave loopback mode. */ + DP_OUT(base, DP_ISR, DP_ISR_OFLW); + DP_OUT(base, DP_TCR, DP_TCR_NORMAL); + + /* If a transmit command was issued, but no transmit event has occured, */ + /* restart it here. */ + DP_IN(base, DP_ISR, isr); + if (dp->tx_started && !(isr & (DP_ISR_TxP|DP_ISR_TxE))) { + DP_OUT(base, DP_CR, DP_CR_NODMA | DP_CR_TXPKT | DP_CR_START); + } +} + +static void +dp83902a_poll(void) +{ + struct dp83902a_priv_data *dp = (struct dp83902a_priv_data *) &nic; + cyg_uint8 *base = dp->base; + unsigned char isr; + + DP_OUT(base, DP_CR, DP_CR_NODMA | DP_CR_PAGE0 | DP_CR_START); + DP_IN(base, DP_ISR, isr); + while (0 != isr) { + /* The CNT interrupt triggers when the MSB of one of the error */ + /* counters is set. We don't much care about these counters, but */ + /* we should read their values to reset them. */ + if (isr & DP_ISR_CNT) { + dp83902a_ClearCounters(); + } + /* Check for overflow. It's a special case, since there's a */ + /* particular procedure that must be followed to get back into */ + /* a running state.a */ + if (isr & DP_ISR_OFLW) { + dp83902a_Overflow(); + } else { + /* Other kinds of interrupts can be acknowledged simply by */ + /* clearing the relevant bits of the ISR. Do that now, then */ + /* handle the interrupts we care about. */ + DP_OUT(base, DP_ISR, isr); /* Clear set bits */ + if (!dp->running) break; /* Is this necessary? */ + /* Check for tx_started on TX event since these may happen */ + /* spuriously it seems. */ + if (isr & (DP_ISR_TxP|DP_ISR_TxE) && dp->tx_started) { + dp83902a_TxEvent(); + } + if (isr & (DP_ISR_RxP|DP_ISR_RxE)) { + dp83902a_RxEvent(); + } + } + DP_IN(base, DP_ISR, isr); + } +} + +/* find prom (taken from pc_net_cs.c from Linux) */ + +#include "8390.h" + +typedef struct hw_info_t { + u_int offset; + u_char a0, a1, a2; + u_int flags; +} hw_info_t; + +#define DELAY_OUTPUT 0x01 +#define HAS_MISC_REG 0x02 +#define USE_BIG_BUF 0x04 +#define HAS_IBM_MISC 0x08 +#define IS_DL10019 0x10 +#define IS_DL10022 0x20 +#define HAS_MII 0x40 +#define USE_SHMEM 0x80 /* autodetected */ + +#define AM79C9XX_HOME_PHY 0x00006B90 /* HomePNA PHY */ +#define AM79C9XX_ETH_PHY 0x00006B70 /* 10baseT PHY */ +#define MII_PHYID_REV_MASK 0xfffffff0 +#define MII_PHYID_REG1 0x02 +#define MII_PHYID_REG2 0x03 + +static hw_info_t hw_info[] = { + { /* Accton EN2212 */ 0x0ff0, 0x00, 0x00, 0xe8, DELAY_OUTPUT }, + { /* Allied Telesis LA-PCM */ 0x0ff0, 0x00, 0x00, 0xf4, 0 }, + { /* APEX MultiCard */ 0x03f4, 0x00, 0x20, 0xe5, 0 }, + { /* ASANTE FriendlyNet */ 0x4910, 0x00, 0x00, 0x94, + DELAY_OUTPUT | HAS_IBM_MISC }, + { /* Danpex EN-6200P2 */ 0x0110, 0x00, 0x40, 0xc7, 0 }, + { /* DataTrek NetCard */ 0x0ff0, 0x00, 0x20, 0xe8, 0 }, + { /* Dayna CommuniCard E */ 0x0110, 0x00, 0x80, 0x19, 0 }, + { /* D-Link DE-650 */ 0x0040, 0x00, 0x80, 0xc8, 0 }, + { /* EP-210 Ethernet */ 0x0110, 0x00, 0x40, 0x33, 0 }, + { /* EP4000 Ethernet */ 0x01c0, 0x00, 0x00, 0xb4, 0 }, + { /* Epson EEN10B */ 0x0ff0, 0x00, 0x00, 0x48, + HAS_MISC_REG | HAS_IBM_MISC }, + { /* ELECOM Laneed LD-CDWA */ 0xb8, 0x08, 0x00, 0x42, 0 }, + { /* Hypertec Ethernet */ 0x01c0, 0x00, 0x40, 0x4c, 0 }, + { /* IBM CCAE */ 0x0ff0, 0x08, 0x00, 0x5a, + HAS_MISC_REG | HAS_IBM_MISC }, + { /* IBM CCAE */ 0x0ff0, 0x00, 0x04, 0xac, + HAS_MISC_REG | HAS_IBM_MISC }, + { /* IBM CCAE */ 0x0ff0, 0x00, 0x06, 0x29, + HAS_MISC_REG | HAS_IBM_MISC }, + { /* IBM FME */ 0x0374, 0x08, 0x00, 0x5a, + HAS_MISC_REG | HAS_IBM_MISC }, + { /* IBM FME */ 0x0374, 0x00, 0x04, 0xac, + HAS_MISC_REG | HAS_IBM_MISC }, + { /* Kansai KLA-PCM/T */ 0x0ff0, 0x00, 0x60, 0x87, + HAS_MISC_REG | HAS_IBM_MISC }, + { /* NSC DP83903 */ 0x0374, 0x08, 0x00, 0x17, + HAS_MISC_REG | HAS_IBM_MISC }, + { /* NSC DP83903 */ 0x0374, 0x00, 0xc0, 0xa8, + HAS_MISC_REG | HAS_IBM_MISC }, + { /* NSC DP83903 */ 0x0374, 0x00, 0xa0, 0xb0, + HAS_MISC_REG | HAS_IBM_MISC }, + { /* NSC DP83903 */ 0x0198, 0x00, 0x20, 0xe0, + HAS_MISC_REG | HAS_IBM_MISC }, + { /* I-O DATA PCLA/T */ 0x0ff0, 0x00, 0xa0, 0xb0, 0 }, + { /* Katron PE-520 */ 0x0110, 0x00, 0x40, 0xf6, 0 }, + { /* Kingston KNE-PCM/x */ 0x0ff0, 0x00, 0xc0, 0xf0, + HAS_MISC_REG | HAS_IBM_MISC }, + { /* Kingston KNE-PCM/x */ 0x0ff0, 0xe2, 0x0c, 0x0f, + HAS_MISC_REG | HAS_IBM_MISC }, + { /* Kingston KNE-PC2 */ 0x0180, 0x00, 0xc0, 0xf0, 0 }, + { /* Maxtech PCN2000 */ 0x5000, 0x00, 0x00, 0xe8, 0 }, + { /* NDC Instant-Link */ 0x003a, 0x00, 0x80, 0xc6, 0 }, + { /* NE2000 Compatible */ 0x0ff0, 0x00, 0xa0, 0x0c, 0 }, + { /* Network General Sniffer */ 0x0ff0, 0x00, 0x00, 0x65, + HAS_MISC_REG | HAS_IBM_MISC }, + { /* Panasonic VEL211 */ 0x0ff0, 0x00, 0x80, 0x45, + HAS_MISC_REG | HAS_IBM_MISC }, + { /* PreMax PE-200 */ 0x07f0, 0x00, 0x20, 0xe0, 0 }, + { /* RPTI EP400 */ 0x0110, 0x00, 0x40, 0x95, 0 }, + { /* SCM Ethernet */ 0x0ff0, 0x00, 0x20, 0xcb, 0 }, + { /* Socket EA */ 0x4000, 0x00, 0xc0, 0x1b, + DELAY_OUTPUT | HAS_MISC_REG | USE_BIG_BUF }, + { /* Socket LP-E CF+ */ 0x01c0, 0x00, 0xc0, 0x1b, 0 }, + { /* SuperSocket RE450T */ 0x0110, 0x00, 0xe0, 0x98, 0 }, + { /* Volktek NPL-402CT */ 0x0060, 0x00, 0x40, 0x05, 0 }, + { /* NEC PC-9801N-J12 */ 0x0ff0, 0x00, 0x00, 0x4c, 0 }, + { /* PCMCIA Technology OEM */ 0x01c8, 0x00, 0xa0, 0x0c, 0 } +}; + +#define NR_INFO (sizeof(hw_info)/sizeof(hw_info_t)) + +static hw_info_t default_info = { 0, 0, 0, 0, 0 }; + +unsigned char dev_addr[6]; + +#define PCNET_CMD 0x00 +#define PCNET_DATAPORT 0x10 /* NatSemi-defined port window offset. */ +#define PCNET_RESET 0x1f /* Issue a read to reset, a write to clear. */ +#define PCNET_MISC 0x18 /* For IBM CCAE and Socket EA cards */ + +unsigned long nic_base; + +static void pcnet_reset_8390(void) +{ + int i, r; + + PRINTK("nic base is %lx\n", nic_base); + +#if 1 + n2k_outb(E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD); + PRINTK("cmd (at %lx) is %x\n", nic_base+ E8390_CMD, n2k_inb(E8390_CMD)); + n2k_outb(E8390_NODMA+E8390_PAGE1+E8390_STOP, E8390_CMD); + PRINTK("cmd (at %lx) is %x\n", nic_base+ E8390_CMD, n2k_inb(E8390_CMD)); + n2k_outb(E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD); + PRINTK("cmd (at %lx) is %x\n", nic_base+ E8390_CMD, n2k_inb(E8390_CMD)); +#endif + n2k_outb(E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD); + + n2k_outb(n2k_inb(nic_base + PCNET_RESET), PCNET_RESET); + + for (i = 0; i < 100; i++) { + if ((r = (n2k_inb(EN0_ISR) & ENISR_RESET)) != 0) + break; + PRINTK("got %x in reset\n", r); + my_udelay(100); + } + n2k_outb(ENISR_RESET, EN0_ISR); /* Ack intr. */ + + if (i == 100) + printf("pcnet_reset_8390() did not complete.\n"); +} /* pcnet_reset_8390 */ + +static hw_info_t * get_prom(void ) { + unsigned char prom[32]; + int i, j; + struct { + u_char value, offset; + } program_seq[] = { + {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/ + {0x48, EN0_DCFG}, /* Set byte-wide (0x48) access. */ + {0x00, EN0_RCNTLO}, /* Clear the count regs. */ + {0x00, EN0_RCNTHI}, + {0x00, EN0_IMR}, /* Mask completion irq. */ + {0xFF, EN0_ISR}, + {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */ + {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */ + {32, EN0_RCNTLO}, + {0x00, EN0_RCNTHI}, + {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */ + {0x00, EN0_RSARHI}, + {E8390_RREAD+E8390_START, E8390_CMD}, + }; + + PRINTK("trying to get MAC via prom reading\n"); + + pcnet_reset_8390(); + + mdelay(10); + + for (i = 0; i < sizeof(program_seq)/sizeof(program_seq[0]); i++) + n2k_outb(program_seq[i].value, program_seq[i].offset); + + PRINTK("PROM:"); + for (i = 0; i < 32; i++) { + prom[i] = n2k_inb(PCNET_DATAPORT); + PRINTK(" %02x", prom[i]); + } + PRINTK("\n"); + for (i = 0; i < NR_INFO; i++) { + if ((prom[0] == hw_info[i].a0) && + (prom[2] == hw_info[i].a1) && + (prom[4] == hw_info[i].a2)) { + PRINTK("matched board %d\n", i); + break; + } + } + if ((i < NR_INFO) || ((prom[28] == 0x57) && (prom[30] == 0x57))) { + for (j = 0; j < 6; j++) + dev_addr[j] = prom[j<<1]; + PRINTK("on exit i is %d/%ld\n", i, NR_INFO); + PRINTK("MAC address is %02x:%02x:%02x:%02x:%02x:%02x\n", + dev_addr[0],dev_addr[1],dev_addr[2],dev_addr[3],dev_addr[4],dev_addr[5]); + return (i < NR_INFO) ? hw_info+i : &default_info; + } + return NULL; +} + +/* U-boot specific routines */ + +#define NB 5 + +static unsigned char *pbuf = NULL; +static int plen[NB]; +static int nrx = 0; + +static int pkey = -1; + +void uboot_push_packet_len(int len) { + PRINTK("pushed len = %d, nrx = %d\n", len, nrx); + if (len>=2000) { + printf("NE2000: packet too big\n"); + return; + } + if (nrx >= NB) { + printf("losing packets in rx\n"); + return; + } + plen[nrx] = len; + dp83902a_recv(&pbuf[nrx*2000], len); + nrx++; +} + +void uboot_push_tx_done(int key, int val) { + PRINTK("pushed key = %d\n", key); + pkey = key; +} + +int eth_init(bd_t *bd) { + static hw_info_t * r; + char ethaddr[20]; + + PRINTK("### eth_init\n"); + + if (!pbuf) { + pbuf = malloc(NB*2000); + if (!pbuf) { + printf("Cannot allocate rx buffers\n"); + return -1; + } + } + +#ifdef CONFIG_DRIVER_NE2000_CCR + { + volatile unsigned char *p = (volatile unsigned char *) CONFIG_DRIVER_NE2000_CCR; + + PRINTK("CCR before is %x\n", *p); + *p = CONFIG_DRIVER_NE2000_VAL; + PRINTK("CCR after is %x\n", *p); + } +#endif + + nic_base = CONFIG_DRIVER_NE2000_BASE; + nic.base = (cyg_uint8 *) CONFIG_DRIVER_NE2000_BASE; + + r = get_prom(); + if (!r) + return -1; + + sprintf (ethaddr, "%02X:%02X:%02X:%02X:%02X:%02X", + dev_addr[0], dev_addr[1], + dev_addr[2], dev_addr[3], + dev_addr[4], dev_addr[5]) ; + PRINTK("Set environment from HW MAC addr = \"%s\"\n", ethaddr); + setenv ("ethaddr", ethaddr); + + +#define DP_DATA 0x10 + nic.data = nic.base + DP_DATA; + nic.tx_buf1 = 0x40; + nic.tx_buf2 = 0x48; + nic.rx_buf_start = 0x50; + nic.rx_buf_end = 0x80; + + if (dp83902a_init() == false) + return -1; + dp83902a_start(dev_addr); + return 0; +} + +void eth_halt() { + + PRINTK("### eth_halt\n"); + + dp83902a_stop(); +} + +int eth_rx() { + int j, tmo; + + PRINTK("### eth_rx\n"); + + tmo = get_timer (0) + TOUT * CFG_HZ; + while(1) { + dp83902a_poll(); + if (nrx > 0) { + for(j=0; j<nrx; j++) { + NetReceive(&pbuf[j*2000], plen[j]); + } + nrx = 0; + return 1; + } + if (get_timer (0) >= tmo) { + printf("timeout during rx\n"); + return 0; + } + } + return 0; +} + +int eth_send(volatile void *packet, int length) { + int tmo; + + PRINTK("### eth_send\n"); + + pkey = -1; + + dp83902a_send((unsigned char *) packet, length, 666); + tmo = get_timer (0) + TOUT * CFG_HZ; + while(1) { + dp83902a_poll(); + if (pkey != -1) { + PRINTK("Packet sucesfully sent\n"); + return 0; + } + if (get_timer (0) >= tmo) { + printf("transmission error (timoeut)\n"); + return 0; + } + + } + return 0; +} + +#endif |