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#define net_init init_interface
#define handle_network_read handle_read
#define send_network_ack send_ack
#define send_network_string send_string
#define send_network_hex send_hex
#include "sv_addr_ag.h"
#include "e100boot.h"
static void start_network_trans(void);
void
net_init(void)
{
*R_NETWORK_GA_1 = *R_NETWORK_GA_0 = 0;
SET_ETHER_ADDR(0x01,0x40,0x8c,0x00,0x01,0x00,
0x01,0x40,0x8c,0x00,0x01,0x00);
*R_NETWORK_REC_CONFIG =
IO_STATE (R_NETWORK_REC_CONFIG, duplex, half) |
IO_STATE (R_NETWORK_REC_CONFIG, bad_crc, discard) |
IO_STATE (R_NETWORK_REC_CONFIG, oversize, discard) |
IO_STATE (R_NETWORK_REC_CONFIG, undersize, discard) |
IO_STATE (R_NETWORK_REC_CONFIG, all_roots, discard) |
IO_STATE (R_NETWORK_REC_CONFIG, broadcast, discard) |
IO_STATE (R_NETWORK_REC_CONFIG, individual, discard) |
IO_STATE (R_NETWORK_REC_CONFIG, ma1, disable) |
IO_STATE (R_NETWORK_REC_CONFIG, ma0, enable);
*R_NETWORK_MGM_CTRL =
IO_FIELD(R_NETWORK_MGM_CTRL, txd_pins, 0) |
IO_FIELD(R_NETWORK_MGM_CTRL, txer_pin, 0) |
IO_FIELD(R_NETWORK_MGM_CTRL, mdck, 0) |
IO_STATE(R_NETWORK_MGM_CTRL, mdoe, disable) |
IO_FIELD(R_NETWORK_MGM_CTRL, mdio, 0);
*R_NETWORK_TR_CTRL =
(IO_STATE (R_NETWORK_TR_CTRL, clr_error, clr) |
IO_STATE (R_NETWORK_TR_CTRL, delay, none) |
IO_STATE (R_NETWORK_TR_CTRL, cancel, dont) |
IO_STATE (R_NETWORK_TR_CTRL, cd, enable) |
IO_STATE (R_NETWORK_TR_CTRL, pad, enable) |
IO_STATE (R_NETWORK_TR_CTRL, crc, enable) |
IO_STATE (R_NETWORK_TR_CTRL, retry, enable));
*R_NETWORK_GEN_CONFIG =
IO_STATE (R_NETWORK_GEN_CONFIG, loopback, off) |
IO_STATE (R_NETWORK_GEN_CONFIG, frame, ether) |
IO_STATE (R_NETWORK_GEN_CONFIG, vg, off) |
IO_STATE (R_NETWORK_GEN_CONFIG, phy, mii_clk) |
IO_STATE (R_NETWORK_GEN_CONFIG, enable, on);
*R_DMA_CH0_CMD = IO_STATE(R_DMA_CH0_CMD, cmd, reset);
*R_DMA_CH1_CMD = IO_STATE(R_DMA_CH1_CMD, cmd, reset);
rx_descr.sw_len = NETWORK_HEADER_LENGTH;
rx_descr.ctrl = TX_CTRL;
rx_descr.next = (udword)&rx_descr2;
rx_descr.buf = (udword)&rx_header;
rx_descr2.sw_len = 1500;
rx_descr2.ctrl = TX_CTRL_EOP;
rx_descr2.buf = target_address;
/* Endian dependent, but saves a few bytes... */
*(udword*)&tx_header.src[0] = htonl(0x02408c00);
*(uword*)&tx_header.src[4] = htons(0x0100);
tx_header.length = htons(64);
tx_header.snap1 = htonl(0xaaaa0300);
tx_header.snap2 = htonl(0x408c8856);
tx_header.tag = htonl(0xfffffffe);
tx_header.seq = 0;
tx_header.type = 0;
tx_descr.sw_len = NETWORK_HEADER_LENGTH;
tx_descr.ctrl = TX_CTRL_EOP;
tx_descr.buf = (udword)&tx_header;
set_dest = FALSE;
seq = 0;
*R_DMA_CH1_FIRST = (udword)&rx_descr;
*R_DMA_CH1_CMD = IO_STATE(R_DMA_CH1_CMD, cmd, start);
}
int
handle_network_read(void)
{
if (!(rx_descr2.status & d_eop)) {
return FALSE;
}
/* Even if wasn't to us, we must do this... */
rx_descr2.status = 0;
*R_DMA_CH1_FIRST = (udword)&rx_descr;
/* Was it to me? */
if (ntohl(rx_header.seq) == (seq+1)) {
interface = NETWORK;
last_timeout = *R_TIMER_DATA >> IO_BITNR(R_TIMER_DATA, timer0);
nbr_read += rx_descr2.hw_len - CRC_LEN;
rx_descr2.buf += rx_descr2.hw_len - CRC_LEN;
rx_descr2.sw_len = bytes_to_read - nbr_read - CRC_LEN < 1500 ?
bytes_to_read - nbr_read + CRC_LEN: 1500; /* FIX!!!!! */
rx_descr2.sw_len = rx_descr2.sw_len + NETWORK_HEADER_LENGTH < 64
? 64 - NETWORK_HEADER_LENGTH : rx_descr2.sw_len; /* Less than minimum eth packet? */
seq++;
send_network_ack();
}
return TRUE;
}
void
send_network_ack(void)
{
/* send_serial_string(">send_network_ack.\r\n"); */
if (!set_dest) { /* Copy destination address from first received packet */
set_dest = TRUE;
/* If we have done a bootrom network boot, source address is in a different
place... */
if (((*R_BUS_STATUS & IO_MASK(R_BUS_STATUS, boot))
>> IO_BITNR(R_BUS_STATUS, boot)) - 1 == NETWORK) {
*(udword*)&tx_header.dest[0] = *(udword*)0x380000dc;
*(uword*)&tx_header.dest[4] = *(uword*)0x380000e0;
}
else {
*(udword*)&tx_header.dest[0] = *(udword*)&rx_header.src[0];
*(uword*)&tx_header.dest[4] = *(uword*)&rx_header.src[4];
}
}
#if 1
tx_header.seq = htonl(seq);
tx_header.type = htonl(ACK);
#else
tx_header.seq = htonl(seq);
tx_header.type = htonl(bytes_to_read);
tx_header.id = htonl(target_address);
/* tx_header.id already set in start(). */
#endif
tx_descr.ctrl = TX_CTRL_EOP;
tx_descr.sw_len = NETWORK_HEADER_LENGTH;
start_network_trans();
}
void
start_network_trans(void)
{
/* send_serial_string(">start_network_trans\r\n"); */
/* Clear possible underrun or excessive retry errors */
/* *R_NETWORK_TR_CTRL = */
/* (IO_STATE (R_NETWORK_TR_CTRL, clr_error, clr) | */
/* IO_STATE (R_NETWORK_TR_CTRL, delay, none) | */
/* IO_STATE (R_NETWORK_TR_CTRL, cancel, dont) | */
/* IO_STATE (R_NETWORK_TR_CTRL, cd, enable) | */
/* IO_STATE (R_NETWORK_TR_CTRL, pad, enable) | */
/* IO_STATE (R_NETWORK_TR_CTRL, crc, enable) | */
/* IO_STATE (R_NETWORK_TR_CTRL, retry, enable)); */
*R_DMA_CH0_FIRST = (udword)&tx_descr;
*R_DMA_CH0_CMD = IO_STATE(R_DMA_CH0_CMD, cmd, start);
while(*R_DMA_CH0_FIRST)
;
}
void
send_network_string(char *str)
{
int i;
tx_descr.next = (udword)&tx_descr2;
tx_descr.ctrl = TX_CTRL;
for (i = 0; str[i]; i++) /* strlen */
;
tx_header.type = STRING;
tx_descr2.ctrl = TX_CTRL_EOP;
tx_descr2.buf = (udword)str;
tx_descr2.sw_len = i+1;
start_network_trans();
}
void
send_network_hex(udword v, byte nl)
{
tx_descr.next = (udword)&tx_descr2;
tx_descr.ctrl = TX_CTRL;
tx_header.type = nl ? htonl(NET_INT_NL) : htonl(NET_INT);
/* Pause so we don't saturate network. */
/* Hehe, the asm will fool gcc to not remove the loop even though it
probably should. If we volatile i the code will be a few bytes
longer than this version. Well I really did it like this just
because it is possible... */
{
udword i;
for(i = 0; i != 16384; i++)
__asm__ ("");
}
v = htonl(v);
tx_descr2.ctrl = TX_CTRL_EOP;
tx_descr2.buf = (udword)&v;
tx_descr2.sw_len = (uword)sizeof(udword);
start_network_trans();
}
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