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ne2000.c
701 lines (619 loc) · 17.3 KB
/
ne2000.c
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/* original code is from http://....-----------------------------------------*/
/* Copyright (c) 2000 by Tsuyoshi Ishii. All rights reserved. ---------------*/
#include "video.h"
#include "klib.h"
#include "io.h"
#include "ne2000.h"
#include "ne2000P.h"
static int curr_page;
static int bound_page;
static ring_buf_t rb;
static int rx_start;
static int rx_bound;
static int rx_len;
static int rx_sub_len;
static int rx_remain_len;
/* ne2000_init --------------------------------------------------------------*/
void
ne2000_init()
{
int i;
/*
int sendq_nr;
int offset_page;
int ramsize;
short s;
*/
/* stop remote DMA */
outb(IO_DP8390 + DP_CR, CR_DM_ABORT | CR_STP);
#if 0
/* FIFO */
outb(IO_DP8390 + DP_DCR, DCR_8BYTES | DCR_WORDWIDE | DCR_BMS);
#else
outb(IO_DP8390 + DP_DCR, DCR_8BYTES | DCR_BYTEWIDE | DCR_BMS);
#endif
/* clear DMA byte count */
outb(IO_DP8390 + DP_RBCR0, 0);
outb(IO_DP8390 + DP_RBCR1, 0);
/* monitor mode */
outb(IO_DP8390 + DP_RCR, RCR_MON);
/* internal loopback mode */
outb(IO_DP8390 + DP_TCR, TCR_INTERNAL);
/* specify ring buffer of start address for transfering */
outb(IO_DP8390 + DP_TSR, PAGE_TX_START);
outb(IO_DP8390 + DP_PSTART, PAGE_RX_START);
outb(IO_DP8390 + DP_BNRY, PAGE_RX_START);
outb(IO_DP8390 + DP_PSTOP, PAGE_END);
/* clear interrupt flag */
outb(IO_DP8390 + DP_ISR, 0xff);
/* configure enabling interrupt */
outb(IO_DP8390 + DP_IMR, IMR_PRXE);
#if 1
/* old code start ---------------------------------------------------*/
outb(IO_DP8390 + DP_RBCR0, 6 * 2);
outb(IO_DP8390 + DP_RBCR1, 0);
outb(IO_DP8390 + DP_RSAR0, 0);
outb(IO_DP8390 + DP_RSAR1, 0);
outb(IO_DP8390 + DP_CR, CR_DM_RR | CR_PS_P0 | CR_STA);
/* Mmm... card is 8bit ??? ne1000 ??? */
printk("Ethernet = ");
for (i = 0 ; i < 5 ; i ++) {
ed.ether[i] = (char)inw(IO_NE2000 + NE_DATA) & 0xff;
printk("%x:", ed.ether[i]);
}
ed.ether[i] = (char)inw(IO_NE2000 + NE_DATA) & 0xff;
printk("%x\n", ed.ether[i]);
/* old code end -----------------------------------------------------*/
#endif
/* configure page 1 */
outb(IO_DP8390 + DP_CR, CR_DM_ABORT | CR_PS_P1 | CR_STP);
/* set up ethernet address */
#if 1
outb(IO_DP8390 + DP_PAR0, ed.ether[0]);
outb(IO_DP8390 + DP_PAR1, ed.ether[1]);
outb(IO_DP8390 + DP_PAR2, ed.ether[2]);
outb(IO_DP8390 + DP_PAR3, ed.ether[3]);
outb(IO_DP8390 + DP_PAR4, ed.ether[4]);
outb(IO_DP8390 + DP_PAR5, ed.ether[5]);
#else
outb(IO_DP8390 + DP_PAR0, 0x00);
outb(IO_DP8390 + DP_PAR1, 0xe0);
outb(IO_DP8390 + DP_PAR2, 0x98);
outb(IO_DP8390 + DP_PAR3, 0x16);
outb(IO_DP8390 + DP_PAR4, 0x06);
outb(IO_DP8390 + DP_PAR5, 0x66);
#endif
/* set up page number for first received packet */
outb(IO_DP8390 + DP_CURR, PAGE_RX_START + 1);
/* set up muiticast register */
outb(IO_DP8390 + DP_MAR0, 0);
outb(IO_DP8390 + DP_MAR1, 0);
outb(IO_DP8390 + DP_MAR2, 0);
outb(IO_DP8390 + DP_MAR3, 0);
outb(IO_DP8390 + DP_MAR4, 0);
outb(IO_DP8390 + DP_MAR5, 0);
outb(IO_DP8390 + DP_MAR6, 0);
outb(IO_DP8390 + DP_MAR7, 0);
/* configure page 1 */
outb(IO_DP8390 + DP_CR, CR_DM_ABORT | CR_STP);
#if 0
/* promiscious mode -------------------------------------------------*/
outb(IO_DP8390 + DP_RCR, RCR_AB | RCR_PRO | RCR_AM
| RCR_AB | RCR_AM);
#else
/* normal mode (broadcast + multicast) ------------------------------*/
/* setup filtering for received packet */
outb(IO_DP8390 + DP_RCR, RCR_AB | RCR_AM);
#endif
#if 1
/* activate NIC */
outb(IO_DP8390 + DP_CR, CR_DM_ABORT | CR_STA);
/* enter normal mode */
outb(IO_DP8390 + DP_TCR, 0);
#else
inb(IO_DP8390 + DP_CNTR0);
inb(IO_DP8390 + DP_CNTR1);
inb(IO_DP8390 + DP_CNTR2);
outb(IO_DP8390 + DP_IMR, IMR_PRXE | IMR_PTXE | IMR_RXEE | IMR_TXEE |
IMR_OVWE | IMR_CNTE);
outb(IO_DP8390 + DP_CR, CR_STA | CR_DM_ABORT);
outb(IO_DP8390 + DP_TCR, 0);
#endif
#if 0
offset_page = NE2000_START / DP_PAGESIZE;
ramsize = NE2000_SIZE;
sendq_nr = NE2000_SIZE / 0x2000;
ed.sendpage = offset_page;
/* dp8390 initialization --------------------------------------------*/
outb(IO_DP8390 + DP_CR, CR_PS_P0 | CR_STP | CR_DM_ABORT);
outb(IO_DP8390 + DP_IMR, 0);
outb(IO_DP8390 + DP_PSTART, offset_page + sendq_nr * SENDQ_PAGES);
ed.startpage = offset_page + sendq_nr * SENDQ_PAGES;
outb(IO_DP8390 + DP_PSTOP, offset_page + ramsize / DP_PAGESIZE);
ed.stoppage = offset_page + ramsize / DP_PAGESIZE;
outb(IO_DP8390 + DP_BNRY, offset_page + sendq_nr * SENDQ_PAGES);
outb(IO_DP8390 + DP_RCR, RCR_MON);
outb(IO_DP8390 + DP_TCR, TCR_NORMAL);
#if 0
/* 16 bit */
outb(IO_DP8390 + DP_DCR, DCR_WORDWIDE | DCR_8BYTES | DCR_BMS);
#else
/* 8 bit */
outb(IO_DP8390 + DP_DCR, DCR_BYTEWIDE | DCR_8BYTES | DCR_BMS);
#endif
outb(IO_DP8390 + DP_RBCR0, 0);
outb(IO_DP8390 + DP_RBCR1, 0);
outb(IO_DP8390 + DP_ISR, 0xff);
outb(IO_DP8390 + DP_CR, CR_PS_P1 | CR_DM_ABORT);
outb(IO_DP8390 + DP_PAR0, ed.ether[0]);
outb(IO_DP8390 + DP_PAR1, ed.ether[1]);
outb(IO_DP8390 + DP_PAR2, ed.ether[2]);
outb(IO_DP8390 + DP_PAR3, ed.ether[3]);
outb(IO_DP8390 + DP_PAR4, ed.ether[4]);
outb(IO_DP8390 + DP_PAR5, ed.ether[5]);
outb(IO_DP8390 + DP_MAR0, 0xff);
outb(IO_DP8390 + DP_MAR1, 0xff);
outb(IO_DP8390 + DP_MAR2, 0xff);
outb(IO_DP8390 + DP_MAR3, 0xff);
outb(IO_DP8390 + DP_MAR4, 0xff);
outb(IO_DP8390 + DP_MAR5, 0xff);
outb(IO_DP8390 + DP_MAR6, 0xff);
outb(IO_DP8390 + DP_MAR7, 0xff);
outb(IO_DP8390 + DP_CURR, offset_page + sendq_nr * SENDQ_PAGES + 1);
outb(IO_DP8390 + DP_CR, CR_PS_P0 | CR_DM_ABORT);
#if 0
/* promiscious ------------------------------------------------------*/
outb(IO_DP8390 + DP_RCR, RCR_AB | RCR_PRO | RCR_AM
| RCR_AB | RCR_AM);
/* promiscious ------------------------------------------------------*/
#else
outb(IO_DP8390 + DP_RCR, RCR_AB);
#endif
inb(IO_DP8390 + DP_CNTR0);
inb(IO_DP8390 + DP_CNTR1);
inb(IO_DP8390 + DP_CNTR2);
outb(IO_DP8390 + DP_IMR, IMR_PRXE | IMR_PTXE | IMR_RXEE | IMR_TXEE |
IMR_OVWE | IMR_CNTE);
outb(IO_DP8390 + DP_CR, CR_STA | CR_DM_ABORT);
#endif
printk("ne2000: initialized\n");
}
/* ne2000_probe -------------------------------------------------------------*/
void
ne2000_probe()
{
char c;
int i;
/* ne2000 and dp8390 has same I/O port ------------------------------*/
c = inb(IO_NE2000 + NE_RESET);
for (i = 0 ; i < 20000 ; i ++);
outb(IO_NE2000 + NE_RESET, c);
for (i = 0 ; i < 20000 ; i ++);
outb(IO_DP8390 + DP_CR, CR_STP | CR_DM_ABORT);
for (i = 0 ; i < 20000 ; i ++);
/* disable storing packet to memory */
outb(IO_DP8390 + DP_RCR, RCR_MON);
outb(IO_DP8390 + DP_DCR, DCR_WTS | DCR_8BYTES | DCR_BMS);
/* set top address of buffer */
outb(IO_DP8390 + DP_PSTART, PAGE_START);
outb(IO_DP8390 + DP_PSTOP, PAGE_END);
#if 0
/* test pattern */
#endif
outb(IO_DP8390 + DP_ISR, 0xff);
#if 0
for (i = 0 ; i < 2000 ; i ++) {
if ((inb(IO_DP8390 + DP_ISR) & ISR_RST) != 0)
break;
}
if ((inb(IO_DP8390 + DP_CR) & (CR_STP | CR_DM_ABORT)) !=
(CR_STP | CR_DM_ABORT)) {
/*** ERROR ***/
return;
}
outb(IO_DP8390 + DP_RCR, RCR_MON);
outb(IO_DP8390 + DP_TCR, TCR_NORMAL);
/* ne2000 is 16bit --------------------------------------------------*/
outb(IO_DP8390 + DP_DCR, DCR_WORDWIDE | DCR_8BYTES | DCR_BMS);
if (ne2000_test(NE2000_START)) {
printk("NE2000 initialize ok\n");
}
#endif
}
static int
ne2000_test(int pos)
{
static char pat[7] = "abcdef";
int i;
outb(IO_DP8390 + DP_ISR, 0xff);
outb(IO_DP8390 + DP_RBCR0, 4);
outb(IO_DP8390 + DP_RBCR1, 0);
outb(IO_DP8390 + DP_RSAR0, pos & 0xff);
outb(IO_DP8390 + DP_RSAR1, pos >> 8);
outb(IO_DP8390 + DP_CR, CR_DM_RW | CR_PS_P0 | CR_STA);
for (i = 0 ; i < 3 ; i += 2) {
outb(IO_NE2000 + NE_DATA, *(short*)(pat + i));
}
for (i = 0 ; i < 1000 ; i ++) {
if (inb(IO_DP8390 + DP_ISR) & ISR_RDC)
break;
}
if (i >= 1000) {
printk("NE2000:DMA failed\n");
return 0;
}
outb(IO_DP8390 + DP_RBCR0, 4);
outb(IO_DP8390 + DP_RBCR1, 0);
outb(IO_DP8390 + DP_RSAR0, pos & 0xff);
outb(IO_DP8390 + DP_RSAR1, pos >> 8);
outb(IO_DP8390 + DP_CR, CR_DM_RR | CR_PS_P0 | CR_STA);
for (i = 0 ; i < 3 ; i += 2) {
inw(IO_NE2000 + NE_DATA);
}
return 1;
}
void
ne2000_loop()
{
char c;
int i;
for (i = 0 ; i < 10000 ; i ++) {
c = inb(IO_DP8390 + DP_ISR);
printk("[");
printk("%x", c);
printk("]");
}
}
/* ne2000_snd ---------------------------------------------------------------*/
void
ne2000_snd(char* buf, int len)
{
#if 1
while ((inb(IO_DP8390 + DP_CR) & 0x4) != 0)
;
/* disble interrupt */
#if 0
ne2000_memwrite(buf, (PAGE_TX_START << 8), len);
#else
ne2000_memwrite(buf, (PAGE_TX_START << 8), 6);
ne2000_memwrite(buf + 6, (PAGE_TX_START << 8) + 6, 6);
ne2000_memwrite(buf + 12, (PAGE_TX_START << 8) + 12, 2);
ne2000_memwrite(buf + 14, (PAGE_TX_START << 8) + 14, len - 14);
#endif
/* enable interrupt */
/*
outb(IO_DP8390 + DP_CR, CR_PS_P0 | CR_DM_ABORT | CR_STA);
*/
outb(IO_DP8390 + DP_TPSR, PAGE_TX_START);
outb(IO_DP8390 + DP_TBCR0, len & 0xff);
outb(IO_DP8390 + DP_TBCR1, (len >> 8) & 0xff);
#if 1
outb(IO_DP8390 + DP_CR, CR_PS_P0 | CR_TXP | CR_DM_ABORT | CR_STA);
#else
outb(IO_DP8390 + DP_CR, CR_PS_P0 | CR_TXP);
#endif
while ((inb(IO_DP8390 + DP_CR) & 0x4) != 0)
;
#endif
#if 0
int i;
outb(IO_DP8390 + DP_ISR, ISR_RDC);
outb(IO_DP8390 + DP_RBCR0, len & 0xff);
outb(IO_DP8390 + DP_RBCR1, (len >> 8) & 0xff);
outb(IO_DP8390 + DP_RSAR0, (PAGE_TX_START * DP_PAGESIZE) & 0xff);
outb(IO_DP8390 + DP_RSAR1, (PAGE_TX_START * DP_PAGESIZE) >> 8);
outb(IO_DP8390 + DP_CR, CR_DM_RW | CR_PS_P0 | CR_STA);
for (i = 0 ; i < len ; i ++) {
outb(DP_DATA, buf[i]);
}
outb(IO_DP8390 + DP_TPSR, PAGE_TX_START);
outb(IO_DP8390 + DP_TBCR0, len & 0xff);
outb(IO_DP8390 + DP_TBCR1, len >> 8);
outb(IO_DP8390 + DP_CR, CR_TXP);
printk("ne2000:snd ok\n");
#endif
#if 0
int i;
outb(IO_DP8390 + DP_ISR, ISR_RDC);
outb(IO_DP8390 + DP_RBCR0, len & 0xff);
outb(IO_DP8390 + DP_RBCR1, (len >> 8) & 0xff);
outb(IO_DP8390 + DP_RSAR0, (ed.sendpage * DP_PAGESIZE) & 0xff);
outb(IO_DP8390 + DP_RSAR1, (ed.sendpage * DP_PAGESIZE) >> 8);
outb(IO_DP8390 + DP_CR, CR_DM_RW | CR_PS_P0 | CR_STA);
for (i = 0 ; i < len ; i ++) {
outb(DP_DATA, c[i]);
}
/*
for (i = 0 ; i < 100000 ; i ++) {
if (inb(IO_DP8390 + DP_ISR) & ISR_RDC)
break;
}
if (i >= 100000)
printk("ne2000:snd ERROR\n");
*/
outb(IO_DP8390 + DP_TPSR, ed.sendpage);
outb(IO_DP8390 + DP_TBCR0, len & 0xff);
outb(IO_DP8390 + DP_TBCR1, len >> 8);
outb(IO_DP8390 + DP_CR, CR_TXP);
printk("ne2000:snd ok\n");
#endif
}
/* ne2000_rcv ---------------------------------------------------------------*/
int
ne2000_rcv(char* buf, int len)
{
int flag;
/*
rcv_header_t header;
ethernet_t ether;
unsigned int page_no, curr, next;
*/
char* buf2 = buf;
int len2;
void ether_input(char*, int);
/* page 0 */
outb(IO_DP8390 + DP_CR, CR_STA);
/* rx status register */
flag = inb(IO_DP8390 + DP_RSR);
if ((flag & RSR_FO) != 0)
return 0;
/* rx ring buffer over flow */
if ((inb(IO_DP8390 + DP_ISR) & ISR_OVW) != 0)
return 0;
/* rx success */
if ((flag & RSR_PRX) == 0)
return 0; /* no received packet */
bound_page = inb(IO_DP8390 + DP_BNRY) + 1;
if (bound_page == PAGE_RX_END)
bound_page = PAGE_RX_START;
outb(IO_DP8390 + DP_CR, CR_PS_P1);
curr_page = inb(IO_DP8390 + DP_CURR);
outb(IO_DP8390 + DP_CR, CR_PS_P0);
if (curr_page == PAGE_RX_END)
curr_page = PAGE_RX_START;
if (curr_page == bound_page)
return 0;
ne2000_memread((unsigned int)(bound_page << 8), (unsigned char*)&rb, 4);
len2 = rb.len;
#if 0
printk("[%x,%x:%x,%x,%x]", bound_page, curr_page, rb.status, rb.bound, rb.len);
#endif
rx_start = (bound_page << 8) + 4;
rx_len = rb.len - 4;
rx_bound = rb.bound;
if ((rb.status & RSR_PRX) != 0 && rx_len >= 14 && rx_len <= 1514) {
rx_remain_len = rx_len;
rx_sub_len = PAGE_RX_END * 256 - rx_start;
if (rx_sub_len < rx_len) {
ne2000_memread(rx_start, buf, rx_sub_len);
rx_start = PAGE_RX_START * 256;
buf += rx_sub_len;
rx_remain_len = rx_len - rx_sub_len;
}
/*
printk("pre-read");
*/
ne2000_memread(rx_start, buf, rx_remain_len);
ether_input(buf2, len2);
}
#if 0
{
printk("dst = ");
printk("%x:", buf2[0]);
printk("%x:", buf2[1]);
printk("%x:", buf2[2]);
printk("%x:", buf2[3]);
printk("%x:", buf2[4]);
printk("%x ", buf2[5]);
printk("src = ");
printk("%x:", buf2[0]);
printk("%x:", buf2[1]);
printk("%x:", buf2[2]);
printk("%x:", buf2[3]);
printk("%x:", buf2[4]);
printk("%x\n", buf2[5]);
}
#endif
bound_page = rx_bound;
if (bound_page == PAGE_RX_START)
bound_page = PAGE_RX_END;
bound_page --;
outb(IO_DP8390 + DP_BNRY, bound_page);
/* clear interrupt status */
outb(IO_DP8390 + DP_ISR, 0xff);
#if 0
printk("ne2000:rcv\n");
page_no = inb(IO_DP8390 + DP_BNRY) + 1;
if (page_no == ed.stoppage)
page_no = ed.startpage;
flag = 1;
do {
outb(IO_DP8390 + DP_CR, CR_PS_P1);
curr = inb(IO_DP8390 + DP_CURR);
outb(IO_DP8390 + DP_CR, CR_PS_P0);
if (curr == page_no)
break;
ne2000_getblock(page_no, 0, sizeof(header), (char*)&header);
ne2000_getblock(page_no, sizeof(rcv_header_t),
sizeof(ethernet_t), (char*)ðer);
len = (header.rbcl | (header.rbch << 8)) - sizeof(rcv_header_t);
printk("page_no = %x, curr = %x, length = %x\n", page_no, curr, len);
printk("dst = ");
printk("%x:", ether.dst[0]);
printk("%x:", ether.dst[1]);
printk("%x:", ether.dst[2]);
printk("%x:", ether.dst[3]);
printk("%x:", ether.dst[4]);
printk("%x\n", ether.dst[5]);
printk("src = ");
printk("%x:", ether.src[0]);
printk("%x:", ether.src[1]);
printk("%x:", ether.src[2]);
printk("%x:", ether.src[3]);
printk("%x:", ether.src[4]);
printk("%x\n", ether.src[5]);
printk("type= %x\n", ether.type);
next = header.next;
if ((header.status & RSR_PRX)) {
flag = 0;
} else
next = curr;
if (next == ed.startpage)
outb(IO_DP8390 + DP_BNRY, ed.stoppage - 1);
else
outb(IO_DP8390 + DP_BNRY, next - 1);
page_no = next;
} while (flag);
#endif
return 0;
}
/* ne2000_intr --------------------------------------------------------------*/
int
ne2000_intr()
{
int tsr;
int isr;
static char buf[1600];
ne2000_rcv(buf, 1600);
return 0;
while (1) {
isr = inb(IO_DP8390 + DP_ISR);
if (isr == 0)
break;
outb(IO_DP8390 + DP_ISR, isr);
if (isr & (ISR_PTX | ISR_TXE)) {
/* transmit -----------------------------------------*/
if (isr & ISR_TXE) {
/* send error -------------------------------*/
}
} else {
tsr = inb(IO_DP8390 + DP_TSR);
if (tsr & TSR_PTX) ;
if (tsr & TSR_DFR) ;
if (tsr & TSR_COL) ;
if (tsr & TSR_ABT) ;
if (tsr & TSR_CRS) ;
}
if (isr & ISR_PRX) {
/*
ne2000_rcv(buf, 1600);
*/
}
if (isr & ISR_CNT) {
printk("ne2000:CNTR-CNTR-CNTR-CNTR\n");
inb(IO_DP8390 + DP_CNTR0);
inb(IO_DP8390 + DP_CNTR1);
inb(IO_DP8390 + DP_CNTR2);
}
if (isr & ISR_RST)
ne2000_reset();
printk("ISR: %x\n", isr);
}
return 0;
}
/* ne2000_reset -------------------------------------------------------------*/
void
ne2000_reset()
{
int i;
printk("ne2000:reset - reset - reset - reset - reset- reset - reset \n");
outb(IO_DP8390 + DP_CR, CR_STP | CR_DM_ABORT);
outb(IO_DP8390 + DP_RBCR0, 0);
outb(IO_DP8390 + DP_RBCR1, 0);
i = 0;
while (i < 1000) {
if ((inb(IO_DP8390 + DP_ISR) & ISR_RST) != 0)
break;
i ++;
}
outb(IO_DP8390 + DP_TCR, TCR_1EXTERNAL | TCR_OFST);
outb(IO_DP8390 + DP_CR, CR_STA | CR_DM_ABORT);
outb(IO_DP8390 + DP_TCR, TCR_NORMAL | TCR_OFST);
i = 0;
while (i < 1000) {
if ((inb(IO_DP8390 + DP_ISR) & ISR_RDC) != 0)
break;
i ++;
}
outb(IO_DP8390 + DP_ISR, inb(IO_DP8390 + DP_ISR) & ~ISR_RDC);
}
void
ne2000_getblock(int page, unsigned short offset, unsigned short size, char* dst)
{
int i;
/*
short* p = (short*)dst;
*/
char c;
offset = page * DP_PAGESIZE + offset;
outb(IO_DP8390 + DP_RBCR0, size & 0xff);
outb(IO_DP8390 + DP_RBCR1, size >> 8);
outb(IO_DP8390 + DP_RSAR0, offset & 0xff);
outb(IO_DP8390 + DP_RSAR1, offset >> 8);
outb(IO_DP8390 + DP_CR, CR_DM_RR | CR_PS_P0 | CR_STA);
#if 1
for (i = 0 ; i < size ; i ++) {
c = *dst ++ = (char)inb(DP_DATA);
printk("[%x]", c & 0xff);
c = (char)inb(DP_DATA); /* dummy */
printk("[%x]", c & 0xff);
}
#else
for (i = 0 ; i < size ; i += 2)
*p ++ = (short)inw(DP_DATA);
#endif
}
/* ne2000_memread -----------------------------------------------------------*/
void
ne2000_memread(unsigned int src, unsigned char* dst, unsigned int len)
{
int i;
#if 0
outb(IO_DP8390 + DP_RBCR0, 6 * 2);
outb(IO_DP8390 + DP_RBCR1, 0);
outb(IO_DP8390 + DP_RSAR0, 0);
outb(IO_DP8390 + DP_RSAR1, 0);
outb(IO_DP8390 + DP_CR, CR_DM_RR | CR_PS_P0 | CR_STA);
#endif
len <<= 1;
outb(IO_DP8390 + DP_CR, CR_DM_ABORT | CR_STA);
outb(IO_DP8390 + DP_RBCR0, len & 0xff);
outb(IO_DP8390 + DP_RBCR1, (len >> 8) & 0xff);
outb(IO_DP8390 + DP_RSAR0, src & 0xff);
outb(IO_DP8390 + DP_RSAR1, (src >> 8) & 0xff);
outb(IO_DP8390 + DP_CR, CR_DM_RR | CR_PS_P0 | CR_STA);
printk("*");
for (i = 0 ; i < len / 2 ; i ++) {
*dst = inb(IO_DP8390 + NE_DATA);
#if 0
printk("{%x}", *dst & 0xff);
#endif
/*
*(dst + 1) = inb(IO_DP8390 + NE_DATA);
*/
dst ++;
}
}
/* ne2000_memwrite ----------------------------------------------------------*/
void
ne2000_memwrite(unsigned char* src, unsigned int dst, unsigned int len)
{
int i;
/* clear status register */
outb(IO_DP8390 + DP_CR, CR_DM_ABORT | CR_STA);
outb(IO_DP8390 + DP_ISR, ISR_RDC);
/* length */
outb(IO_DP8390 + DP_RBCR0, len & 0xff);
outb(IO_DP8390 + DP_RBCR1, (len >> 8) & 0xff);
/* destination address */
outb(IO_DP8390 + DP_RSAR0, dst & 0xff);
outb(IO_DP8390 + DP_RSAR1, (dst >> 8) & 0xff);
outb(IO_DP8390 + DP_CR, CR_DM_RW | CR_PS_P0 | CR_STA);
for (i = 0 ; i < len ; i ++) {
outb(IO_DP8390 + NE_DATA, src[i]);
}
for (i = 0 ; i < 256 ; i ++) {
if ((inb(IO_DP8390 + DP_ISR) & ISR_RDC) == 0)
break;
}
}