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phunix/minix/drivers/net/dp8390/ne2000.c
David van Moolenbroek f7df02e747 libnetdriver: rewrite 
This is a driver-breaking update to the netdriver library, which is
used by all network drivers.  The aim of this change is to make the
library more compatible with NetBSD, and in particular with various
features that are expected to be supported by the NetBSD userland.
The main changes made by this patch are the following:

- each network driver now has a NetBSD-style short device name;
- drivers are not expected to receive packets right after startup;
- extended support for receipt modes, including multicast lists;
- support for multiple parallel send, receive requests;
- embedding of I/O vectors in send and receive requests;
- support for capabilities, including checksum offloading;
- support for reporting link status updates to the TCP/IP stack;
- support for setting and retrieving media status;
- support for changing the hardware (MAC) address;
- support for NetBSD interface flags IFF_DEBUG, IFF_LINK[0-2];
- support for NetBSD error statistics;
- support for regular time-based ("tick") callbacks.

IMPORTANT: this patch applies a minimal update to the existing drivers
in order to make them work at all with the new netdriver library.  It
however does *not* change all drivers to make use of the new features.
In fact, strictly speaking, all drivers are now violating requirements
imposed by the new library in one way or another, most notably by
enabling packet receipt when starting the driver.  Changing all the
drivers to be compliant, and to support the newly added options, is
left to future patches.  The existing drivers should currently *not*
be taken as examples of how to implement a new network driver!

With that said, a few drivers have already been changed to make use of
some of the new features: fxp, e1000, rtl8139, and rtl8169 now report
link and media status, and the last three of those now support setting
the hardware MAC address on the fly.  In addition, dp8390 has been
changed to default to PCI autoconfiguration if no configuration is
specified through environment variables.

Change-Id: I4b3ea9c0b9bc25d5b0609c6ff256fb0db71cdc42
2017-04-30 13:15:28 +00:00

327 lines
7.3 KiB
C
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/*
ne2000.c
Driver for the ne2000 ethernet cards. This file contains only the ne2000
specific code, the rest is in dp8390.c
Created: March 15, 1994 by Philip Homburg <philip@f-mnx.phicoh.com>
*/
#include <minix/drivers.h>
#include <minix/netdriver.h>
#include "local.h"
#include "dp8390.h"
#include "ne2000.h"
#if ENABLE_NE2000
#define N 100
extern u32_t system_hz;
#define MILLIS_TO_TICKS(m) (((m)*system_hz/1000)+1)
typedef int(*testf_t) (dpeth_t *dep, int pos, u8_t *pat);
static u8_t pat0[]= { 0x00, 0x00, 0x00, 0x00 };
static u8_t pat1[]= { 0xFF, 0xFF, 0xFF, 0xFF };
static u8_t pat2[]= { 0xA5, 0x5A, 0x69, 0x96 };
static u8_t pat3[]= { 0x96, 0x69, 0x5A, 0xA5 };
static int test_8(dpeth_t *dep, int pos, u8_t *pat);
static int test_16(dpeth_t *dep, int pos, u8_t *pat);
static void ne_stop(dpeth_t *dep);
static void milli_delay(unsigned long millis);
/*===========================================================================*
* ne_probe *
*===========================================================================*/
int ne_probe(dpeth_t *dep)
{
int byte;
int i;
int loc1, loc2;
testf_t f;
dep->de_dp8390_port= dep->de_base_port + NE_DP8390;
/* We probe for an ne1000 or an ne2000 by testing whether the
* on board is reachable through the dp8390. Note that the
* ne1000 is an 8bit card and has a memory region distict from
* the 16bit ne2000
*/
for (dep->de_16bit= 0; dep->de_16bit < 2; dep->de_16bit++)
{
/* Reset the ethernet card */
byte= inb_ne(dep, NE_RESET);
milli_delay(2);
outb_ne(dep, NE_RESET, byte);
milli_delay(2);
/* Reset the dp8390 */
outb_reg0(dep, DP_CR, CR_STP | CR_DM_ABORT);
for (i= 0; i < 0x1000 && ((inb_reg0(dep, DP_ISR) & ISR_RST) == 0); i++)
; /* Do nothing */
/* Check if the dp8390 is really there */
if ((inb_reg0(dep, DP_CR) & (CR_STP|CR_DM_ABORT)) !=
(CR_STP|CR_DM_ABORT))
{
return 0;
}
/* Disable the receiver and init TCR and DCR. */
outb_reg0(dep, DP_RCR, RCR_MON);
outb_reg0(dep, DP_TCR, TCR_NORMAL);
if (dep->de_16bit)
{
outb_reg0(dep, DP_DCR, DCR_WORDWIDE | DCR_8BYTES |
DCR_BMS);
}
else
{
outb_reg0(dep, DP_DCR, DCR_BYTEWIDE | DCR_8BYTES |
DCR_BMS);
}
if (dep->de_16bit)
{
loc1= NE2000_START;
loc2= NE2000_START + NE2000_SIZE - 4;
f= test_16;
}
else
{
loc1= NE1000_START;
loc2= NE1000_START + NE1000_SIZE - 4;
f= test_8;
}
if (f(dep, loc1, pat0) && f(dep, loc1, pat1) &&
f(dep, loc1, pat2) && f(dep, loc1, pat3) &&
f(dep, loc2, pat0) && f(dep, loc2, pat1) &&
f(dep, loc2, pat2) && f(dep, loc2, pat3))
{
/* We don't need a memory segment */
dep->de_linmem= 0;
if (!dep->de_pci)
dep->de_initf= ne_init;
dep->de_stopf= ne_stop;
dep->de_prog_IO= 1;
return 1;
}
}
return 0;
}
/*===========================================================================*
* ne_init *
*===========================================================================*/
void ne_init(dep)
dpeth_t *dep;
{
int i;
int word, sendq_nr;
/* Setup a transfer to get the ethernet address. */
if (dep->de_16bit)
outb_reg0(dep, DP_RBCR0, 6*2);
else
outb_reg0(dep, DP_RBCR0, 6);
outb_reg0(dep, DP_RBCR1, 0);
outb_reg0(dep, DP_RSAR0, 0);
outb_reg0(dep, DP_RSAR1, 0);
outb_reg0(dep, DP_CR, CR_DM_RR | CR_PS_P0 | CR_STA);
for (i= 0; i<6; i++)
{
if (dep->de_16bit)
{
word= inw_ne(dep, NE_DATA);
dep->de_address.na_addr[i]= word;
}
else
{
dep->de_address.na_addr[i] = inb_ne(dep, NE_DATA);
}
}
dep->de_data_port= dep->de_base_port + NE_DATA;
if (dep->de_16bit)
{
dep->de_ramsize= NE2000_SIZE;
dep->de_offset_page= NE2000_START / DP_PAGESIZE;
}
else
{
dep->de_ramsize= NE1000_SIZE;
dep->de_offset_page= NE1000_START / DP_PAGESIZE;
}
/* Allocate one send buffer (1.5KB) per 8KB of on board memory. */
sendq_nr= dep->de_ramsize / 0x2000;
if (sendq_nr < 1)
sendq_nr= 1;
else if (sendq_nr > SENDQ_NR)
sendq_nr= SENDQ_NR;
dep->de_sendq_nr= sendq_nr;
for (i= 0; i<sendq_nr; i++)
{
dep->de_sendq[i].sq_sendpage= dep->de_offset_page +
i*SENDQ_PAGES;
}
dep->de_startpage= dep->de_offset_page + i*SENDQ_PAGES;
dep->de_stoppage= dep->de_offset_page + dep->de_ramsize / DP_PAGESIZE;
/* Can't override the default IRQ. */
dep->de_irq &= ~DEI_DEFAULT;
if (!debug)
{
printf("%s: NE%d000 at %X:%d\n",
netdriver_name(), dep->de_16bit ? 2 : 1,
dep->de_base_port, dep->de_irq);
}
else
{
printf("%s: Novell NE%d000 ethernet card at I/O address "
"0x%X, memory size 0x%X, irq %d\n",
netdriver_name(), dep->de_16bit ? 2 : 1,
dep->de_base_port, dep->de_ramsize, dep->de_irq);
}
}
/*===========================================================================*
* test_8 *
*===========================================================================*/
static int test_8(dep, pos, pat)
dpeth_t *dep;
int pos;
u8_t *pat;
{
u8_t buf[4];
int i;
int r;
outb_reg0(dep, DP_ISR, 0xFF);
/* Setup a transfer to put the pattern. */
outb_reg0(dep, DP_RBCR0, 4);
outb_reg0(dep, DP_RBCR1, 0);
outb_reg0(dep, DP_RSAR0, pos & 0xFF);
outb_reg0(dep, DP_RSAR1, pos >> 8);
outb_reg0(dep, DP_CR, CR_DM_RW | CR_PS_P0 | CR_STA);
for (i= 0; i<4; i++)
outb_ne(dep, NE_DATA, pat[i]);
for (i= 0; i<N; i++)
{
if (inb_reg0(dep, DP_ISR) & ISR_RDC)
break;
}
if (i == N)
{
if (debug)
{
printf("%s: NE1000 remote DMA test failed\n",
netdriver_name());
}
return 0;
}
outb_reg0(dep, DP_RBCR0, 4);
outb_reg0(dep, DP_RBCR1, 0);
outb_reg0(dep, DP_RSAR0, pos & 0xFF);
outb_reg0(dep, DP_RSAR1, pos >> 8);
outb_reg0(dep, DP_CR, CR_DM_RR | CR_PS_P0 | CR_STA);
for (i= 0; i<4; i++)
buf[i]= inb_ne(dep, NE_DATA);
r= (memcmp(buf, pat, 4) == 0);
return r;
}
/*===========================================================================*
* test_16 *
*===========================================================================*/
static int test_16(dep, pos, pat)
dpeth_t *dep;
int pos;
u8_t *pat;
{
u8_t buf[4];
int i;
int r;
outb_reg0(dep, DP_ISR, 0xFF);
/* Setup a transfer to put the pattern. */
outb_reg0(dep, DP_RBCR0, 4);
outb_reg0(dep, DP_RBCR1, 0);
outb_reg0(dep, DP_RSAR0, pos & 0xFF);
outb_reg0(dep, DP_RSAR1, pos >> 8);
outb_reg0(dep, DP_CR, CR_DM_RW | CR_PS_P0 | CR_STA);
for (i= 0; i<4; i += 2)
{
outw_ne(dep, NE_DATA, *(u16_t *)(pat+i));
}
for (i= 0; i<N; i++)
{
if (inb_reg0(dep, DP_ISR) & ISR_RDC)
break;
}
if (i == N)
{
if (debug)
{
printf("%s: NE2000 remote DMA test failed\n",
netdriver_name());
}
return 0;
}
outb_reg0(dep, DP_RBCR0, 4);
outb_reg0(dep, DP_RBCR1, 0);
outb_reg0(dep, DP_RSAR0, pos & 0xFF);
outb_reg0(dep, DP_RSAR1, pos >> 8);
outb_reg0(dep, DP_CR, CR_DM_RR | CR_PS_P0 | CR_STA);
for (i= 0; i<4; i += 2)
{
*(u16_t *)(buf+i)= inw_ne(dep, NE_DATA);
}
r= (memcmp(buf, pat, 4) == 0);
return r;
}
/*===========================================================================*
* ne_stop *
*===========================================================================*/
static void ne_stop(dep)
dpeth_t *dep;
{
int byte;
/* Reset the ethernet card */
byte= inb_ne(dep, NE_RESET);
milli_delay(2);
outb_ne(dep, NE_RESET, byte);
}
static void milli_delay(unsigned long millis)
{
tickdelay(MILLIS_TO_TICKS(millis));
}
#endif /* ENABLE_NE2000 */
/*
* $PchId: ne2000.c,v 1.10 2004/08/03 12:03:00 philip Exp $
*/
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