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/*
** File: wd.c
**
** Driver for the Ethercard (WD80x3) and derivates
** This file contains only the wd80x3 specific code,
** the rest is in 8390.c
**
** Created: March 14, 1994 by Philip Homburg
** PchId:
**
** Modified: Jun. 08, 2000 by Giovanni Falzoni <gfalzoni@inwind.it>
** Adaptation to interfacing new main network task.
*/
#include <minix/drivers.h>
#include <minix/netdriver.h>
#include "dp.h"
#if (ENABLE_WDETH == 1)
#include "8390.h"
#include "wd.h"
#define WET_ETHERNET 0x01 /* Ethernet transceiver */
#define WET_STARLAN 0x02 /* Starlan transceiver */
#define WET_INTERF_CHIP 0x04 /* has a WD83C583 interface chip */
#define WET_BRD_16BIT 0x08 /* 16 bit board */
#define WET_SLT_16BIT 0x10 /* 16 bit slot */
#define WET_790 0x20 /* '790 chip */
static const int we_int_table[8] = {9, 3, 5, 7, 10, 11, 15, 4};
static const int we_790int_table[8] = {0, 9, 3, 5, 7, 10, 11, 15};
static void we_init(dpeth_t * dep);
static void we_stop(dpeth_t * dep);
static int we_aliasing(dpeth_t * dep);
static int we_interface_chip(dpeth_t * dep);
static int we_16bitboard(dpeth_t * dep);
static int we_16bitslot(dpeth_t * dep);
static int we_ultra(dpeth_t * dep);
/*===========================================================================*
* wdeth_probe *
*===========================================================================*/
int wdeth_probe(dpeth_t *dep)
{
int sum;
if (dep->de_linmem == 0)
return FALSE; /* No shared memory, so no WD board */
sum = inb_we(dep, EPL_EA0) + inb_we(dep, EPL_EA1) +
inb_we(dep, EPL_EA2) + inb_we(dep, EPL_EA3) +
inb_we(dep, EPL_EA4) + inb_we(dep, EPL_EA5) +
inb_we(dep, EPL_TLB) + inb_we(dep, EPL_CHKSUM);
if ((sum & 0xFF) != 0xFF)
return FALSE; /* No ethernet board at this address */
dep->de_initf = we_init;
dep->de_stopf = we_stop;
dep->de_prog_IO = 0;
return TRUE;
}
/*===========================================================================*
* we_init *
*===========================================================================*/
static void we_init(dpeth_t *dep)
{
unsigned int i, int_indx, int_nr;
int tlb, rambit, revision;
int icr, irr, hwr, b, gcr;
int we_type;
unsigned int sendq_nr;
for (i = 0; i < 6; i += 1) {
dep->de_address.na_addr[i] = inb_we(dep, EPL_EA0 + i);
}
dep->de_dp8390_port = dep->de_base_port + EPL_DP8390;
dep->de_16bit = 0;
we_type = 0;
we_type |= WET_ETHERNET; /* assume ethernet */
if (we_ultra(dep)) we_type |= WET_790;
if (!we_aliasing(dep)) {
if (we_interface_chip(dep)) we_type |= WET_INTERF_CHIP;
if (we_16bitboard(dep)) {
we_type |= WET_BRD_16BIT;
if (we_16bitslot(dep)) we_type |= WET_SLT_16BIT;
}
}
if (we_type & WET_SLT_16BIT) dep->de_16bit = 1;
/* Look at the on board ram size. */
tlb = inb_we(dep, EPL_TLB);
revision = tlb & E_TLB_REV;
rambit = tlb & E_TLB_RAM;
if (dep->de_ramsize != 0) {
/* Size set from boot environment. */
} else if (revision < 2) {
dep->de_ramsize = 0x2000; /* 8K */
if (we_type & WET_BRD_16BIT)
dep->de_ramsize = 0x4000; /* 16K */
else if ((we_type & WET_INTERF_CHIP) &&
inb_we(dep, EPL_ICR) & E_ICR_MEMBIT) {
dep->de_ramsize = 0x8000; /* 32K */
}
} else {
if (we_type & WET_BRD_16BIT) {
/* 32K or 16K */
dep->de_ramsize = rambit ? 0x8000 : 0x4000;
} else {
/* 32K or 8K */
dep->de_ramsize = rambit ? 0x8000 : 0x2000;
}
}
if (we_type & WET_790) {
outb_we(dep, EPL_MSR, E_MSR_RESET);
if ((we_type & (WET_BRD_16BIT | WET_SLT_16BIT)) ==
(WET_BRD_16BIT | WET_SLT_16BIT)) {
outb_we(dep, EPL_LAAR, E_LAAR_LAN16E | E_LAAR_MEM16E);
}
} else if (we_type & WET_BRD_16BIT) {
if (we_type & WET_SLT_16BIT) {
outb_we(dep, EPL_LAAR, E_LAAR_A19 | E_LAAR_SOFTINT |
E_LAAR_LAN16E | E_LAAR_MEM16E);
} else {
outb_we(dep, EPL_LAAR, E_LAAR_A19 | E_LAAR_SOFTINT |
E_LAAR_LAN16E);
}
}
if (we_type & WET_790) {
outb_we(dep, EPL_MSR, E_MSR_MENABLE);
hwr = inb_we(dep, EPL_790_HWR);
outb_we(dep, EPL_790_HWR, hwr | E_790_HWR_SWH);
b = inb_we(dep, EPL_790_B);
outb_we(dep, EPL_790_B, ((dep->de_linmem >> 13) & 0x0f) |
((dep->de_linmem >> 11) & 0x40) | (b & 0xb0));
outb_we(dep, EPL_790_HWR, hwr & ~E_790_HWR_SWH);
} else {
outb_we(dep, EPL_MSR, E_MSR_RESET);
outb_we(dep, EPL_MSR, E_MSR_MENABLE |
((dep->de_linmem >> 13) & E_MSR_MEMADDR));
}
if ((we_type & WET_INTERF_CHIP) && !(we_type & WET_790)) {
icr = inb_we(dep, EPL_ICR);
irr = inb_we(dep, EPL_IRR);
int_indx = (icr & E_ICR_IR2) | ((irr & (E_IRR_IR0 | E_IRR_IR1)) >> 5);
int_nr = we_int_table[int_indx];
DEBUG(printf("%s: encoded irq= %d\n", netdriver_name(), int_nr));
if (dep->de_irq & DEI_DEFAULT) dep->de_irq = int_nr;
outb_we(dep, EPL_IRR, irr | E_IRR_IEN);
}
if (we_type & WET_790) {
hwr = inb_we(dep, EPL_790_HWR);
outb_we(dep, EPL_790_HWR, hwr | E_790_HWR_SWH);
gcr = inb_we(dep, EPL_790_GCR);
outb_we(dep, EPL_790_HWR, hwr & ~E_790_HWR_SWH);
int_indx = ((gcr & E_790_GCR_IR2) >> 4) |
((gcr & (E_790_GCR_IR1 | E_790_GCR_IR0)) >> 2);
int_nr = we_790int_table[int_indx];
DEBUG(printf("%s: encoded irq= %d\n", netdriver_name(), int_nr));
if (dep->de_irq & DEI_DEFAULT) dep->de_irq = int_nr;
icr = inb_we(dep, EPL_790_ICR);
outb_we(dep, EPL_790_ICR, icr | E_790_ICR_EIL);
}
/* Strip the "default flag." */
dep->de_irq &= ~DEI_DEFAULT;
dep->de_offset_page = 0; /* Shared memory starts at 0 */
/* 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 = i * SENDQ_PAGES;
}
dep->de_startpage = i * SENDQ_PAGES;
dep->de_stoppage = dep->de_ramsize / DP_PAGESIZE;
ns_init(dep); /* Initialize DP controller */
printf("%s: WD80%d3 (%dkB RAM) at %X:%d:%lX - ",
netdriver_name(),
we_type & WET_BRD_16BIT ? 1 : 0,
dep->de_ramsize / 1024,
dep->de_base_port,
dep->de_irq,
dep->de_linmem);
for (i = 0; i < SA_ADDR_LEN; i += 1)
printf("%02X%c", dep->de_address.na_addr[i],
i < SA_ADDR_LEN - 1 ? ':' : '\n');
return;
}
/*===========================================================================*
* we_stop *
*===========================================================================*/
static void we_stop(dpeth_t *dep)
{
if (dep->de_16bit) outb_we(dep, EPL_LAAR, E_LAAR_A19 | E_LAAR_LAN16E);
outb_we(dep, EPL_MSR, E_MSR_RESET);
outb_we(dep, EPL_MSR, 0);
sys_irqdisable(&dep->de_hook);
return;
}
/*===========================================================================*
* we_aliasing *
*===========================================================================*/
static int we_aliasing(dpeth_t *dep)
{
/* Determine whether wd8003 hardware performs register aliasing. This implies
* an old WD8003E board. */
if (inb_we(dep, EPL_REG1) != inb_we(dep, EPL_EA1)) return 0;
if (inb_we(dep, EPL_REG2) != inb_we(dep, EPL_EA2)) return 0;
if (inb_we(dep, EPL_REG3) != inb_we(dep, EPL_EA3)) return 0;
if (inb_we(dep, EPL_REG4) != inb_we(dep, EPL_EA4)) return 0;
if (inb_we(dep, EPL_REG7) != inb_we(dep, EPL_CHKSUM)) return 0;
return 1;
}
/*===========================================================================*
* we_interface_chip *
*===========================================================================*/
static int we_interface_chip(dpeth_t *dep)
{
/* Determine if the board has an interface chip. */
outb_we(dep, EPL_GP2, 0x35);
if (inb_we(dep, EPL_GP2) != 0x35) return 0;
outb_we(dep, EPL_GP2, 0x3A);
if (inb_we(dep, EPL_GP2) != 0x3A) return 0;
return 1;
}
/*===========================================================================*
* we_16bitboard *
*===========================================================================*/
static int we_16bitboard(dpeth_t *dep)
{
/* Determine whether the board is capable of doing 16 bit memory moves.
* If the 16 bit enable bit is unchangable by software we'll assume an
* 8 bit board.
*/
unsigned int icr;
u8_t tlb;
icr = inb_we(dep, EPL_ICR);
outb_we(dep, EPL_ICR, icr ^ E_ICR_16BIT);
if (inb_we(dep, EPL_ICR) == icr) {
tlb = inb_we(dep, EPL_TLB);
DEBUG(printf("%s: tlb= 0x%x\n", netdriver_name(), tlb));
return tlb == E_TLB_EB || tlb == E_TLB_E ||
tlb == E_TLB_SMCE || tlb == E_TLB_SMC8216C;
}
outb_we(dep, EPL_ICR, icr);
return 1;
}
/*===========================================================================*
* we_16bitslot *
*===========================================================================*/
static int we_16bitslot(dpeth_t *dep)
{
/* Determine if the 16 bit board in plugged into a 16 bit slot. */
return !!(inb_we(dep, EPL_ICR) & E_ICR_16BIT);
}
/*===========================================================================*
* we_ultra *
*===========================================================================*/
static int we_ultra(dpeth_t *dep)
{
/* Determine if we has an '790 chip. */
u8_t tlb;
tlb = inb_we(dep, EPL_TLB);
return tlb == E_TLB_SMC8216C;
}
#endif /* ENABLE_WDETH */
/** wd.c **/
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