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phunix/minix/drivers/net/dpeth/wd.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

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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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