/*
** hp100.c
** HP CASCADE Architecture Driver for 100VG-AnyLan Network Adapters
**
** $Id: hp100.c,v 1.54 1997/06/12 10:37:07 perex Exp perex $
**
** Based on the HP100 driver written by Jaroslav Kysela <perex@jcu.cz>
** Extended for new busmaster capable chipsets by
** Siegfried "Frieder" Loeffler (dg1sek) <floeff@mathematik.uni-stuttgart.de>
**
** Maintained by: Jaroslav Kysela <perex@jcu.cz>
**
** This driver has only been tested with
** -- HP J2585B 10/100 Mbit/s PCI Busmaster
** -- HP J2585A 10/100 Mbit/s PCI
** -- HP J2970 10 Mbit/s PCI Combo 10base-T/BNC
** -- HP J2973 10 Mbit/s PCI 10base-T
** -- HP J2573 10/100 ISA
** -- Compex ReadyLink ENET100-VG4 10/100 Mbit/s PCI / EISA
**
** but it should also work with the other CASCADE based adapters.
**
** TODO:
** - J2573 seems to hang sometimes when in shared memory mode.
** - Mode for Priority TX
** - Check PCI registers, performance might be improved?
** - To reduce interrupt load in busmaster, one could switch off
** the interrupts that are used to refill the queues whenever the
** queues are filled up to more than a certain threshold.
**
**
** This source/code is public free; you can distribute it and/or modify
** it under terms of the GNU General Public License (published by the
** Free Software Foundation) either version two of this License, or any
** later version.
**
** 1.53 -> 1.54
** - added hardware multicast filter support (doesn't work)
** - little changes in hp100_sense_lan routine
** - added support for Coax and AUI (J2970)
** - fix for multiple cards and hp100_mode parameter (insmod)
** - fix for shared IRQ
**
** 1.52 -> 1.53
** - fixed bug in multicast support
**
*/
#define HP100_DEFAULT_PRIORITY_TX 0
#undef HP100_DEBUG
#undef HP100_DEBUG_B /* Trace */
#undef HP100_DEBUG_BM /* Debug busmaster code (PDL stuff) */
#undef HP100_DEBUG_TRAINING /* Debug login-to-hub procedure */
#undef HP100_DEBUG_TX
#undef HP100_DEBUG_IRQ
#undef HP100_DEBUG_RX
#undef HP100_MULTICAST_FILTER /* Need to be debugged... */
#include <linux/version.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/ioport.h>
#include <linux/malloc.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/bios32.h>
#include <asm/bitops.h>
#include <asm/io.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/types.h>
#include <linux/config.h> /* for CONFIG_PCI */
#include <linux/delay.h>
#if LINUX_VERSION_CODE < 0x020100
#define ioremap vremap
#define iounmap vfree
typedef struct enet_statistics hp100_stats_t;
#else
#define LINUX_2_1
typedef struct net_device_stats hp100_stats_t;
#endif
#ifndef __initfunc
#define __initfunc(__initarg) __initarg
#else
#include <linux/init.h>
#endif
#include "hp100.h"
/*
* defines
*/
#define HP100_BUS_ISA 0
#define HP100_BUS_EISA 1
#define HP100_BUS_PCI 2
#ifndef PCI_DEVICE_ID_HP_J2585B
#define PCI_DEVICE_ID_HP_J2585B 0x1031
#endif
#ifndef PCI_VENDOR_ID_COMPEX
#define PCI_VENDOR_ID_COMPEX 0x11f6
#endif
#ifndef PCI_DEVICE_ID_COMPEX_ENET100VG4
#define PCI_DEVICE_ID_COMPEX_ENET100VG4 0x0112
#endif
#define HP100_REGION_SIZE 0x20 /* for ioports */
#define HP100_MAX_PACKET_SIZE (1536+4)
#define HP100_MIN_PACKET_SIZE 60
#ifndef HP100_DEFAULT_RX_RATIO
/* default - 75% onboard memory on the card are used for RX packets */
#define HP100_DEFAULT_RX_RATIO 75
#endif
#ifndef HP100_DEFAULT_PRIORITY_TX
/* default - don't enable transmit outgoing packets as priority */
#define HP100_DEFAULT_PRIORITY_TX 0
#endif
/*
* structures
*/
struct hp100_eisa_id {
u_int id;
const char *name;
u_char bus;
};
struct hp100_private {
struct hp100_eisa_id *id;
u_short chip;
u_short soft_model;
u_int memory_size;
u_short rx_ratio; /* 1 - 99 */
u_short priority_tx; /* != 0 - priority tx */
u_short mode; /* PIO, Shared Mem or Busmaster */
u_char bus;
u_char pci_bus;
u_char pci_device_fn;
short mem_mapped; /* memory mapped access */
u_int *mem_ptr_virt; /* virtual memory mapped area, maybe NULL */
u_int *mem_ptr_phys; /* physical memory mapped area */
short lan_type; /* 10Mb/s, 100Mb/s or -1 (error) */
int hub_status; /* was login to hub successful? */
u_char mac1_mode;
u_char mac2_mode;
u_char hash_bytes[ 8 ];
hp100_stats_t stats;
/* Rings for busmaster mode: */
hp100_ring_t *rxrhead; /* Head (oldest) index into rxring */
hp100_ring_t *rxrtail; /* Tail (newest) index into rxring */
hp100_ring_t *txrhead; /* Head (oldest) index into txring */
hp100_ring_t *txrtail; /* Tail (newest) index into txring */
hp100_ring_t rxring[ MAX_RX_PDL ];
hp100_ring_t txring[ MAX_TX_PDL ];
u_int *page_vaddr; /* Virtual address of allocated page */
u_int *page_vaddr_algn; /* Aligned virtual address of allocated page */
int rxrcommit; /* # Rx PDLs commited to adapter */
int txrcommit; /* # Tx PDLs commited to adapter */
};
/*
* variables
*/
static struct hp100_eisa_id hp100_eisa_ids[] = {
/* 10/100 EISA card with revision A Cascade chip */
{ 0x80F1F022, "HP J2577 rev A", HP100_BUS_EISA },
/* 10/100 ISA card with revision A Cascade chip */
{ 0x50F1F022, "HP J2573 rev A", HP100_BUS_ISA },
/* 10 only EISA card with Cascade chip */
{ 0x2019F022, "HP 27248B", HP100_BUS_EISA },
/* 10/100 EISA card with Cascade chip */
{ 0x4019F022, "HP J2577", HP100_BUS_EISA },
/* 10/100 ISA card with Cascade chip */
{ 0x5019F022, "HP J2573", HP100_BUS_ISA },
/* 10/100 PCI card - old J2585A */
{ 0x1030103c, "HP J2585A", HP100_BUS_PCI },
/* 10/100 PCI card - new J2585B - master capable */
{ 0x1041103c, "HP J2585B", HP100_BUS_PCI },
/* 10 Mbit Combo Adapter */
{ 0x1042103c, "HP J2970", HP100_BUS_PCI },
/* 10 Mbit 10baseT Adapter */
{ 0x1040103c, "HP J2973", HP100_BUS_PCI },
/* 10/100 EISA card from Compex */
{ 0x0103180e, "ReadyLink ENET100-VG4", HP100_BUS_EISA },
/* 10/100 PCI card from Compex (J2585A compatible) */
{ 0x011211f6, "ReadyLink ENET100-VG4", HP100_BUS_PCI }
};
static int hp100_rx_ratio = HP100_DEFAULT_RX_RATIO;
static int hp100_priority_tx = HP100_DEFAULT_PRIORITY_TX;
static int hp100_mode = 1;
#ifdef LINUX_2_1
MODULE_PARM( hp100_rx_ratio, "1i" );
MODULE_PARM( hp100_priority_tx, "1i" );
MODULE_PARM( hp100_mode, "1i" );
#endif
/*
* prototypes
*/
static int hp100_probe1( struct device *dev, int ioaddr, u_char bus, u_char pci_bus, u_char pci_device_fn );
static int hp100_open( struct device *dev );
static int hp100_close( struct device *dev );
static int hp100_start_xmit( struct sk_buff *skb, struct device *dev );
static int hp100_start_xmit_bm (struct sk_buff *skb, struct device *dev );
static void hp100_rx( struct device *dev );
static hp100_stats_t *hp100_get_stats( struct device *dev );
static void hp100_update_stats( struct device *dev );
static void hp100_clear_stats( int ioaddr );
static void hp100_set_multicast_list( struct device *dev);
static void hp100_interrupt( int irq, void *dev_id, struct pt_regs *regs );
static void hp100_start_interface( struct device *dev );
static void hp100_stop_interface( struct device *dev );
static void hp100_load_eeprom( struct device *dev );
static int hp100_sense_lan( struct device *dev );
static int hp100_login_to_vg_hub( struct device *dev, u_short force_relogin );
static int hp100_down_vg_link( struct device *dev );
static void hp100_cascade_reset( struct device *dev, u_short enable );
static void hp100_BM_shutdown( struct device *dev );
static void hp100_mmuinit( struct device *dev );
static void hp100_init_pdls( struct device *dev );
static int hp100_init_rxpdl( struct device *dev, register hp100_ring_t *ringptr, register u_int *pdlptr);
static int hp100_init_txpdl( struct device *dev, register hp100_ring_t *ringptr, register u_int *pdlptr);
static void hp100_rxfill( struct device *dev );
static void hp100_hwinit( struct device *dev );
static void hp100_clean_txring( struct device *dev );
#ifdef HP100_DEBUG
static void hp100_RegisterDump( struct device *dev );
#endif
/* TODO: This function should not really be needed in a good design... */
static void wait( void )
{
udelay( 1000 );
}
/*
* probe functions
* These functions should - if possible - avoid doing write operations
* since this could cause problems when the card is not installed.
*/
__initfunc(int hp100_probe( struct device *dev ))
{
int base_addr = dev ? dev -> base_addr : 0;
int ioaddr = 0;
#ifdef CONFIG_PCI
int pci_start_index = 0;
#endif
#ifdef HP100_DEBUG_B
hp100_outw( 0x4200, TRACE );
printk( "hp100: %s: probe\n", dev->name );
#endif
if ( base_addr > 0xff ) /* Check a single specified location. */
{
if ( check_region( base_addr, HP100_REGION_SIZE ) ) return -EINVAL;
if ( base_addr < 0x400 )
return hp100_probe1( dev, base_addr, HP100_BUS_ISA, 0, 0 );
if ( EISA_bus && base_addr >= 0x1c38 && ( (base_addr - 0x1c38) & 0x3ff ) == 0 )
return hp100_probe1( dev, base_addr, HP100_BUS_EISA, 0, 0 );
#ifdef CONFIG_PCI
printk( "hp100: %s: You may specify card # in i/o address parameter for PCI bus...", dev->name );
return hp100_probe1( dev, base_addr, HP100_BUS_PCI, 0, 0 );
#else
return -ENODEV;
#endif
}
else
#ifdef CONFIG_PCI
if ( base_addr > 0 && base_addr < 8 + 1 )
pci_start_index = 0x100 | ( base_addr - 1 );
else
#endif
if ( base_addr != 0 ) return -ENXIO;
/* at first - scan PCI bus(es) */
#ifdef CONFIG_PCI
if ( pcibios_present() )
{
int pci_index;
#ifdef HP100_DEBUG_PCI
printk( "hp100: %s: PCI BIOS is present, checking for devices..\n", dev->name );
#endif
for ( pci_index = pci_start_index & 7; pci_index < 8; pci_index++ )
{
u_char pci_bus, pci_device_fn;
u_short pci_command;
if ((pcibios_find_device( PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585A,
pci_index, &pci_bus,
&pci_device_fn ) != 0 ) &&
(pcibios_find_device( PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585B,
pci_index, &pci_bus,
&pci_device_fn ) != 0 ) &&
(pcibios_find_device( PCI_VENDOR_ID_COMPEX, PCI_DEVICE_ID_COMPEX_ENET100VG4,
pci_index, &pci_bus,
&pci_device_fn ) != 0 ) ) break;
pcibios_read_config_dword( pci_bus, pci_device_fn,
PCI_BASE_ADDRESS_0, &ioaddr );
ioaddr &= ~3; /* remove I/O space marker in bit 0. */
if ( check_region( ioaddr, HP100_REGION_SIZE ) ) continue;
pcibios_read_config_word( pci_bus, pci_device_fn,
PCI_COMMAND, &pci_command );
if ( !( pci_command & PCI_COMMAND_MASTER ) )
{
#ifdef HP100_DEBUG
printk( "hp100: %s: PCI Master Bit has not been set. Setting...\n", dev->name );
#endif
pci_command |= PCI_COMMAND_MASTER;
pcibios_write_config_word( pci_bus, pci_device_fn,
PCI_COMMAND, pci_command );
}
#ifdef HP100_DEBUG
printk( "hp100: %s: PCI adapter found at 0x%x\n", dev->name, ioaddr );
#endif
if ( hp100_probe1( dev, ioaddr, HP100_BUS_PCI, pci_bus, pci_device_fn ) == 0 )
return 0;
}
}
if ( pci_start_index > 0 ) return -ENODEV;
#endif /* CONFIG_PCI */
/* Second: Probe all EISA possible port regions (if EISA bus present) */
for ( ioaddr = 0x1c38; EISA_bus && ioaddr < 0x10000; ioaddr += 0x400 )
{
if ( check_region( ioaddr, HP100_REGION_SIZE ) ) continue;
if ( hp100_probe1( dev, ioaddr, HP100_BUS_EISA, 0, 0 ) == 0 ) return 0;
}
/* Third Probe all ISA possible port regions */
for ( ioaddr = 0x100; ioaddr < 0x400; ioaddr += 0x20 )
{
if ( check_region( ioaddr, HP100_REGION_SIZE ) ) continue;
if ( hp100_probe1( dev, ioaddr, HP100_BUS_ISA, 0, 0 ) == 0 ) return 0;
}
return -ENODEV;
}
__initfunc(static int hp100_probe1( struct device *dev, int ioaddr, u_char bus, u_char pci_bus, u_char pci_device_fn ))
{
int i;
u_char uc, uc_1;
u_int eisa_id;
u_int chip;
u_int memory_size = 0;
u_short local_mode, lsw;
short mem_mapped;
u_int *mem_ptr_phys, *mem_ptr_virt;
struct hp100_private *lp;
struct hp100_eisa_id *eid;
#ifdef HP100_DEBUG_B
hp100_outw( 0x4201, TRACE );
printk("hp100: %s: probe1\n",dev->name);
#endif
if ( dev == NULL )
{
#ifdef HP100_DEBUG
printk( "hp100_probe1: %s: dev == NULL ?\n", dev->name );
#endif
return EIO;
}
if ( hp100_inw( HW_ID ) != HP100_HW_ID_CASCADE )
{
return -ENODEV;
}
else
{
chip = hp100_inw( PAGING ) & HP100_CHIPID_MASK;
#ifdef HP100_DEBUG
if ( chip == HP100_CHIPID_SHASTA )
printk("hp100: %s: Shasta Chip detected. (This is a pre 802.12 chip)\n", dev->name);
else if ( chip == HP100_CHIPID_RAINIER )
printk("hp100: %s: Rainier Chip detected. (This is a pre 802.12 chip)\n", dev->name);
else if ( chip == HP100_CHIPID_LASSEN )
printk("hp100: %s: Lassen Chip detected.\n", dev->name);
else
printk("hp100: %s: Warning: Unknown CASCADE chip (id=0x%.4x).\n",dev->name,chip);
#endif
}
dev->base_addr = ioaddr;
hp100_page( ID_MAC_ADDR );
for ( i = uc = eisa_id = 0; i < 4; i++ )
{
eisa_id >>= 8;
uc_1 = hp100_inb( BOARD_ID + i );
eisa_id |= uc_1 << 24;
uc += uc_1;
}
uc += hp100_inb( BOARD_ID + 4 );
if ( uc != 0xff ) /* bad checksum? */
{
printk("hp100_probe: %s: bad EISA ID checksum at base port 0x%x\n", dev->name, ioaddr );
return -ENODEV;
}
for ( i=0; i<sizeof(hp100_eisa_ids)/sizeof(struct hp100_eisa_id); i++)
if ( ( hp100_eisa_ids[ i ].id & 0xf0ffffff ) == ( eisa_id & 0xf0ffffff ) )
break;
if ( i >= sizeof( hp100_eisa_ids ) / sizeof( struct hp100_eisa_id ) )
{
printk( "hp100_probe: %s: card at port 0x%x isn't known (id = 0x%x)\n", dev -> name, ioaddr, eisa_id );
return -ENODEV;
}
eid = &hp100_eisa_ids[ i ];
if ( ( eid->id & 0x0f000000 ) < ( eisa_id & 0x0f000000 ) )
{
printk( "hp100_probe: %s: newer version of card %s at port 0x%x - unsupported\n",
dev->name, eid->name, ioaddr );
return -ENODEV;
}
for ( i = uc = 0; i < 7; i++ )
uc += hp100_inb( LAN_ADDR + i );
if ( uc != 0xff )
{
printk("hp100_probe: %s: bad lan address checksum (card %s at port 0x%x)\n",
dev->name, eid->name, ioaddr );
return -EIO;
}
/* Determine driver operation mode
*
* Use the variable "hp100_mode" upon insmod or as kernel parameter to
* force driver modes:
* hp100_mode=1 -> default, use busmaster mode if configured.
* hp100_mode=2 -> enable shared memory mode
* hp100_mode=3 -> force use of i/o mapped mode.
* hp100_mode=4 -> same as 1, but re-set the enable bit on the card.
*/
/* hp100_mode value maybe used in future by another card */
local_mode=hp100_mode;
if ( local_mode < 1 || local_mode > 4 )
local_mode = 1; /* default */
#ifdef HP100_DEBUG
printk( "hp100: %s: original LSW = 0x%x\n", dev->name, hp100_inw(OPTION_LSW) );
#endif
if(local_mode==3)
{
hp100_outw(HP100_MEM_EN|HP100_RESET_LB, OPTION_LSW);
hp100_outw(HP100_IO_EN|HP100_SET_LB, OPTION_LSW);
hp100_outw(HP100_BM_WRITE|HP100_BM_READ|HP100_RESET_HB, OPTION_LSW);
printk("hp100: %s: IO mapped mode forced.\n", dev->name);
}
else if(local_mode==2)
{
hp100_outw(HP100_MEM_EN|HP100_SET_LB, OPTION_LSW);
hp100_outw(HP100_IO_EN |HP100_SET_LB, OPTION_LSW);
hp100_outw(HP100_BM_WRITE|HP100_BM_READ|HP100_RESET_HB, OPTION_LSW);
printk("hp100: %s: Shared memory mode requested.\n", dev->name);
}
else if(local_mode==4)
{
if(chip==HP100_CHIPID_LASSEN)
{
hp100_outw(HP100_BM_WRITE|
HP100_BM_READ | HP100_SET_HB, OPTION_LSW);
hp100_outw(HP100_IO_EN |
HP100_MEM_EN | HP100_RESET_LB, OPTION_LSW);
printk("hp100: %s: Busmaster mode requested.\n",dev->name);
}
local_mode=1;
}
if(local_mode==1) /* default behaviour */
{
lsw = hp100_inw(OPTION_LSW);
if ( (lsw & HP100_IO_EN) &&
(~lsw & HP100_MEM_EN) &&
(~lsw & (HP100_BM_WRITE|HP100_BM_READ)) )
{
#ifdef HP100_DEBUG
printk("hp100: %s: IO_EN bit is set on card.\n",dev->name);
#endif
local_mode=3;
}
else if ( chip == HP100_CHIPID_LASSEN &&
( lsw & (HP100_BM_WRITE|HP100_BM_READ) ) ==
(HP100_BM_WRITE|HP100_BM_READ) )
{
printk("hp100: %s: Busmaster mode enabled.\n",dev->name);
hp100_outw(HP100_MEM_EN|HP100_IO_EN|HP100_RESET_LB, OPTION_LSW);
}
else
{
#ifdef HP100_DEBUG
printk("hp100: %s: Card not configured for BM or BM not supported with this card. Trying shared memory mode.\n", dev->name);
#endif
/* In this case, try shared memory mode */
local_mode=2;
hp100_outw(HP100_MEM_EN|HP100_SET_LB, OPTION_LSW);
/* hp100_outw(HP100_IO_EN|HP100_RESET_LB, OPTION_LSW); */
}
}
#ifdef HP100_DEBUG
printk( "hp100: %s: new LSW = 0x%x\n", dev->name, hp100_inw(OPTION_LSW) );
#endif
/* Check for shared memory on the card, eventually remap it */
hp100_page( HW_MAP );
mem_mapped = (( hp100_inw( OPTION_LSW ) & ( HP100_MEM_EN ) ) != 0);
mem_ptr_phys = mem_ptr_virt = NULL;
memory_size = (8192<<( (hp100_inb(SRAM)>>5)&0x07));
/* For memory mapped or busmaster mode, we want the memory address */
if ( mem_mapped || (local_mode==1))
{
mem_ptr_phys = (u_int *)( hp100_inw( MEM_MAP_LSW ) |
( hp100_inw( MEM_MAP_MSW ) << 16 ) );
(u_int)mem_ptr_phys &= ~0x1fff; /* 8k alignment */
if ( bus == HP100_BUS_ISA && ( (u_long)mem_ptr_phys & ~0xfffff ) != 0 )
{
printk("hp100: %s: Can only use programmed i/o mode.\n", dev->name);
mem_ptr_phys = NULL;
mem_mapped = 0;
local_mode=3; /* Use programmed i/o */
}
/* We do not need access to shared memory in busmaster mode */
/* However in slave mode we need to remap high (>1GB) card memory */
if(local_mode!=1) /* = not busmaster */
{
if ( bus == HP100_BUS_PCI )
{
/* We try with smaller memory sizes, if ioremap fails */
for(; memory_size>16383; memory_size=memory_size/2)
{
if((mem_ptr_virt=ioremap((u_long)mem_ptr_phys,memory_size))==NULL)
{
#ifdef HP100_DEBUG
printk( "hp100: %s: ioremap for 0x%x bytes high PCI memory at 0x%lx failed\n", dev->name, memory_size, (u_long)mem_ptr_phys );
#endif
}
else
{
#ifdef HP100_DEBUG
printk( "hp100: %s: remapped 0x%x bytes high PCI memory at 0x%lx to 0x%lx.\n", dev->name, memory_size, (u_long)mem_ptr_phys, (u_long)mem_ptr_virt);
#endif
break;
}
}
if(mem_ptr_virt==NULL) /* all ioremap tries failed */
{
printk("hp100: %s: Failed to ioremap the PCI card memory. Will have to use i/o mapped mode.\n", dev->name);
local_mode=3;
memory_size = (8192<<( (hp100_inb(SRAM)>>5)&0x07) );
}
}
}
}
if(local_mode==3) /* io mapped forced */
{
mem_mapped = 0;
mem_ptr_phys = mem_ptr_virt = NULL;
printk("hp100: %s: Using (slow) programmed i/o mode.\n", dev->name);
}
/* Initialise the "private" data structure for this card. */
if ( (dev->priv=kmalloc(sizeof(struct hp100_private), GFP_KERNEL)) == NULL)
return -ENOMEM;
memset( dev->priv, 0, sizeof(struct hp100_private) );
lp = (struct hp100_private *)dev->priv;
lp->id = eid;
lp->chip = chip;
lp->mode = local_mode;
lp->pci_bus = pci_bus;
lp->bus = bus;
lp->pci_device_fn = pci_device_fn;
lp->priority_tx = hp100_priority_tx;
lp->rx_ratio = hp100_rx_ratio;
lp->mem_ptr_phys = mem_ptr_phys;
lp->mem_ptr_virt = mem_ptr_virt;
hp100_page( ID_MAC_ADDR );
lp->soft_model = hp100_inb( SOFT_MODEL );
lp->mac1_mode = HP100_MAC1MODE3;
lp->mac2_mode = HP100_MAC2MODE3;
memset( &lp->hash_bytes, 0x00, 8 );
dev->base_addr = ioaddr;
lp->memory_size = memory_size;
lp->rx_ratio = hp100_rx_ratio; /* can be conf'd with insmod */
/* memory region for programmed i/o */
request_region( dev->base_addr, HP100_REGION_SIZE, eid->name );
dev->open = hp100_open;
dev->stop = hp100_close;
if (lp->mode==1) /* busmaster */
dev->hard_start_xmit = hp100_start_xmit_bm;
else
dev->hard_start_xmit = hp100_start_xmit;
dev->get_stats = hp100_get_stats;
dev->set_multicast_list = &hp100_set_multicast_list;
/* Ask the card for which IRQ line it is configured */
hp100_page( HW_MAP );
dev->irq = hp100_inb( IRQ_CHANNEL ) & HP100_IRQMASK;
if ( dev->irq == 2 )
dev->irq = 9;
if(lp->mode==1) /* busmaster */
dev->dma=4;
/* Ask the card for its MAC address and store it for later use. */
hp100_page( ID_MAC_ADDR );
for ( i = uc = 0; i < 6; i++ )
dev->dev_addr[ i ] = hp100_inb( LAN_ADDR + i );
/* Reset statistics (counters) */
hp100_clear_stats( ioaddr );
ether_setup( dev );
/* If busmaster mode is wanted, a dma-capable memory area is needed for
* the rx and tx PDLs
* PCI cards can access the whole PC memory. Therefore GFP_DMA is not
* needed for the allocation of the memory area.
*/
/* TODO: We do not need this with old cards, where PDLs are stored
* in the cards shared memory area. But currently, busmaster has been
* implemented/tested only with the lassen chip anyway... */
if(lp->mode==1) /* busmaster */
{
/* Get physically continous memory for TX & RX PDLs */
if ( (lp->page_vaddr=kmalloc(MAX_RINGSIZE+0x0f,GFP_KERNEL) ) == NULL)
return -ENOMEM;
lp->page_vaddr_algn=((u_int *) ( ((u_int)(lp->page_vaddr)+0x0f) &~0x0f));
memset(lp->page_vaddr, 0, MAX_RINGSIZE+0x0f);
#ifdef HP100_DEBUG_BM
printk("hp100: %s: Reserved DMA memory from 0x%x to 0x%x\n",
dev->name,
(u_int)lp->page_vaddr_algn,
(u_int)lp->page_vaddr_algn+MAX_RINGSIZE);
#endif
lp->rxrcommit = lp->txrcommit = 0;
lp->rxrhead = lp->rxrtail = &(lp->rxring[0]);
lp->txrhead = lp->txrtail = &(lp->txring[0]);
}
/* Initialise the card. */
/* (I'm not really sure if it's a good idea to do this during probing, but
* like this it's assured that the lan connection type can be sensed
* correctly)
*/
hp100_hwinit( dev );
/* Try to find out which kind of LAN the card is connected to. */
lp->lan_type = hp100_sense_lan( dev );
/* Print out a message what about what we think we have probed. */
printk( "hp100: %s: %s at 0x%x, IRQ %d, ",
dev->name, lp->id->name, ioaddr, dev->irq );
switch ( bus ) {
case HP100_BUS_EISA: printk( "EISA" ); break;
case HP100_BUS_PCI: printk( "PCI" ); break;
default: printk( "ISA" ); break;
}
printk( " bus, %dk SRAM (rx/tx %d%%).\n",
lp->memory_size >> 10, lp->rx_ratio );
if ( lp->mode==2 ) /* memory mapped */
{
printk( "hp100: %s: Memory area at 0x%lx-0x%lx",
dev->name,(u_long)mem_ptr_phys,(u_long)mem_ptr_phys+(u_long)lp->memory_size );
if ( mem_ptr_virt )
printk( " (virtual base 0x%lx)", (u_long)mem_ptr_virt );
printk( ".\n" );
/* Set for info when doing ifconfig */
dev->mem_start = (u_long)mem_ptr_phys;
dev->mem_end = (u_long)mem_ptr_phys+(u_long)lp->memory_size;
}
printk( "hp100: %s: ", dev->name );
if ( lp->lan_type != HP100_LAN_ERR )
printk( "Adapter is attached to " );
switch ( lp->lan_type ) {
case HP100_LAN_100:
printk( "100Mb/s Voice Grade AnyLAN network.\n" );
break;
case HP100_LAN_10:
printk( "10Mb/s network.\n" );
break;
default:
printk( "Warning! Link down.\n" );
}
return 0;
}
/* This procedure puts the card into a stable init state */
static void hp100_hwinit( struct device *dev )
{
int ioaddr = dev->base_addr;
struct hp100_private *lp = (struct hp100_private *)dev->priv;
#ifdef HP100_DEBUG_B
hp100_outw( 0x4202, TRACE );
printk("hp100: %s: hwinit\n", dev->name);
#endif
/* Initialise the card. -------------------------------------------- */
/* Clear all pending Ints and disable Ints */
hp100_page( PERFORMANCE );
hp100_outw( 0xfefe, IRQ_MASK ); /* mask off all ints */
hp100_outw( 0xffff, IRQ_STATUS ); /* clear all pending ints */
hp100_outw( HP100_INT_EN | HP100_RESET_LB, OPTION_LSW );
hp100_outw( HP100_TRI_INT | HP100_SET_HB, OPTION_LSW );
if(lp->mode==1)
{
hp100_BM_shutdown( dev ); /* disables BM, puts cascade in reset */
wait();
}
else
{
hp100_outw( HP100_INT_EN | HP100_RESET_LB, OPTION_LSW );
hp100_cascade_reset( dev, TRUE );
hp100_page( MAC_CTRL );
hp100_andb( ~(HP100_RX_EN|HP100_TX_EN), MAC_CFG_1);
}
/* Initiate EEPROM reload */
hp100_load_eeprom( dev );
wait();
/* Go into reset again. */
hp100_cascade_reset( dev, TRUE );
/* Set Option Registers to a safe state */
hp100_outw( HP100_DEBUG_EN |
HP100_RX_HDR |
HP100_EE_EN |
HP100_BM_WRITE |
HP100_BM_READ | HP100_RESET_HB |
HP100_FAKE_INT |
HP100_INT_EN |
HP100_MEM_EN |
HP100_IO_EN | HP100_RESET_LB, OPTION_LSW);
hp100_outw( HP100_TRI_INT |
HP100_MMAP_DIS | HP100_SET_HB, OPTION_LSW );
hp100_outb( HP100_PRIORITY_TX |
HP100_ADV_NXT_PKT |
HP100_TX_CMD | HP100_RESET_LB, OPTION_MSW );
/* TODO: Configure MMU for Ram Test. */
/* TODO: Ram Test. */
/* Re-check if adapter is still at same i/o location */
/* (If the base i/o in eeprom has been changed but the */
/* registers had not been changed, a reload of the eeprom */
/* would move the adapter to the address stored in eeprom */
/* TODO: Code to implement. */
/* Until here it was code from HWdiscover procedure. */
/* Next comes code from mmuinit procedure of SCO BM driver which is
* called from HWconfigure in the SCO driver. */
/* Initialise MMU, eventually switch on Busmaster Mode, initialise
* multicast filter...
*/
hp100_mmuinit( dev );
/* We don't turn the interrupts on here - this is done by start_interface. */
wait(); /* TODO: Do we really need this? */
/* Enable Hardware (e.g. unreset) */
hp100_cascade_reset( dev, FALSE );
/* ------- initialisation complete ----------- */
/* Finally try to log in the Hub if there may be a VG connection. */
if( lp->lan_type != HP100_LAN_10 )
hp100_login_to_vg_hub( dev, FALSE ); /* relogin */
}
/*
* mmuinit - Reinitialise Cascade MMU and MAC settings.
* Note: Must already be in reset and leaves card in reset.
*/
static void hp100_mmuinit( struct device *dev )
{
int ioaddr = dev->base_addr;
struct hp100_private *lp = (struct hp100_private *)dev->priv;
int i;
#ifdef HP100_DEBUG_B
hp100_outw( 0x4203, TRACE );
printk("hp100: %s: mmuinit\n",dev->name);
#endif
#ifdef HP100_DEBUG
if( 0!=(hp100_inw(OPTION_LSW)&HP100_HW_RST) )
{
printk("hp100: %s: Not in reset when entering mmuinit. Fix me.\n",dev->name);
return;
}
#endif
/* Make sure IRQs are masked off and ack'ed. */
hp100_page( PERFORMANCE );
hp100_outw( 0xfefe, IRQ_MASK ); /* mask off all ints */
hp100_outw( 0xffff, IRQ_STATUS ); /* ack IRQ */
/*
* Enable Hardware
* - Clear Debug En, Rx Hdr Pipe, EE En, I/O En, Fake Int and Intr En
* - Set Tri-State Int, Bus Master Rd/Wr, and Mem Map Disable
* - Clear Priority, Advance Pkt and Xmit Cmd
*/
hp100_outw( HP100_DEBUG_EN |
HP100_RX_HDR |
HP100_EE_EN | HP100_RESET_HB |
HP100_IO_EN |
HP100_FAKE_INT |
HP100_INT_EN | HP100_RESET_LB, OPTION_LSW );
hp100_outw( HP100_TRI_INT | HP100_SET_HB, OPTION_LSW);
if(lp->mode==1) /* busmaster */
{
hp100_outw( HP100_BM_WRITE |
HP100_BM_READ |
HP100_MMAP_DIS | HP100_SET_HB, OPTION_LSW );
}
else if(lp->mode==2) /* memory mapped */
{
hp100_outw( HP100_BM_WRITE |
HP100_BM_READ | HP100_RESET_HB, OPTION_LSW );
hp100_outw( HP100_MMAP_DIS | HP100_RESET_HB, OPTION_LSW );
hp100_outw( HP100_MEM_EN | HP100_SET_LB, OPTION_LSW );
hp100_outw( HP100_IO_EN | HP100_SET_LB, OPTION_LSW );
}
else if( lp->mode==3 ) /* i/o mapped mode */
{
hp100_outw( HP100_MMAP_DIS | HP100_SET_HB |
HP100_IO_EN | HP100_SET_LB, OPTION_LSW );
}
hp100_page( HW_MAP );
hp100_outb( 0, EARLYRXCFG );
hp100_outw( 0, EARLYTXCFG );
/*
* Enable Bus Master mode
*/
if(lp->mode==1) /* busmaster */
{
/* Experimental: Set some PCI configuration bits */
hp100_page( HW_MAP );
hp100_andb( ~HP100_PDL_USE3, MODECTRL1 ); /* BM engine read maximum */
hp100_andb( ~HP100_TX_DUALQ, MODECTRL1 ); /* No Queue for Priority TX */
/* PCI Bus failures should result in a Misc. Interrupt */
hp100_orb( HP100_EN_BUS_FAIL, MODECTRL2);
hp100_outw( HP100_BM_READ | HP100_BM_WRITE | HP100_SET_HB, OPTION_LSW );
hp100_page( HW_MAP );
/* Use Burst Mode and switch on PAGE_CK */
hp100_orb( HP100_BM_BURST_RD |
HP100_BM_BURST_WR, BM);
if((lp->chip==HP100_CHIPID_RAINIER)||(lp->chip==HP100_CHIPID_SHASTA))
hp100_orb( HP100_BM_PAGE_CK, BM );
hp100_orb( HP100_BM_MASTER, BM );
}
else /* not busmaster */
{
hp100_page(HW_MAP);
hp100_andb(~HP100_BM_MASTER, BM );
}
/*
* Divide card memory into regions for Rx, Tx and, if non-ETR chip, PDLs
*/
hp100_page( MMU_CFG );
if(lp->mode==1) /* only needed for Busmaster */
{
int xmit_stop, recv_stop;
if((lp->chip==HP100_CHIPID_RAINIER)||(lp->chip==HP100_CHIPID_SHASTA))
{
int pdl_stop;
/*
* Each pdl is 508 bytes long. (63 frags * 4 bytes for address and
* 4 bytes for for header). We will leave NUM_RXPDLS * 508 (rounded
* to the next higher 1k boundary) bytes for the rx-pdl's
* Note: For non-etr chips the transmit stop register must be
* programmed on a 1k boundary, i.e. bits 9:0 must be zero.
*/
pdl_stop = lp->memory_size;
xmit_stop = ( pdl_stop-508*(MAX_RX_PDL)-16 )& ~(0x03ff);
recv_stop = ( xmit_stop * (lp->rx_ratio)/100 ) &~(0x03ff);
hp100_outw( (pdl_stop>>4)-1, PDL_MEM_STOP );
#ifdef HP100_DEBUG_BM
printk("hp100: %s: PDL_STOP = 0x%x\n", dev->name, pdl_stop);
#endif
}
else /* ETR chip (Lassen) in busmaster mode */
{
xmit_stop = ( lp->memory_size ) - 1;
recv_stop = ( ( lp->memory_size * lp->rx_ratio ) / 100 ) & ~(0x03ff);
}
hp100_outw( xmit_stop>>4 , TX_MEM_STOP );
hp100_outw( recv_stop>>4 , RX_MEM_STOP );
#ifdef HP100_DEBUG_BM
printk("hp100: %s: TX_STOP = 0x%x\n",dev->name,xmit_stop>>4);
printk("hp100: %s: RX_STOP = 0x%x\n",dev->name,recv_stop>>4);
#endif
}
else /* Slave modes (memory mapped and programmed io) */
{
hp100_outw( (((lp->memory_size*lp->rx_ratio)/100)>>4), RX_MEM_STOP );
hp100_outw( ((lp->memory_size - 1 )>>4), TX_MEM_STOP );
#ifdef HP100_DEBUG
printk("hp100: %s: TX_MEM_STOP: 0x%x\n", dev->name,hp100_inw(TX_MEM_STOP));
printk("hp100: %s: RX_MEM_STOP: 0x%x\n", dev->name,hp100_inw(RX_MEM_STOP));
#endif
}
/* Write MAC address into page 1 */
hp100_page( MAC_ADDRESS );
for ( i = 0; i < 6; i++ )
hp100_outb( dev->dev_addr[ i ], MAC_ADDR + i );
/* Zero the multicast hash registers */
for ( i = 0; i < 8; i++ )
hp100_outb( 0x0, HASH_BYTE0 + i );
/* Set up MAC defaults */
hp100_page( MAC_CTRL );
/* Go to LAN Page and zero all filter bits */
/* Zero accept error, accept multicast, accept broadcast and accept */
/* all directed packet bits */
hp100_andb( ~(HP100_RX_EN|
HP100_TX_EN|
HP100_ACC_ERRORED|
HP100_ACC_MC|
HP100_ACC_BC|
HP100_ACC_PHY), MAC_CFG_1 );
hp100_outb( 0x00, MAC_CFG_2 );
/* Zero the frame format bit. This works around a training bug in the */
/* new hubs. */
hp100_outb( 0x00, VG_LAN_CFG_2); /* (use 802.3) */
if(lp->priority_tx)
hp100_outb( HP100_PRIORITY_TX | HP100_SET_LB, OPTION_MSW );
else
hp100_outb( HP100_PRIORITY_TX | HP100_RESET_LB, OPTION_MSW );
hp100_outb( HP100_ADV_NXT_PKT |
HP100_TX_CMD | HP100_RESET_LB, OPTION_MSW );
/* If busmaster, initialize the PDLs */
if(lp->mode==1)
hp100_init_pdls( dev );
/* Go to performance page and initalize isr and imr registers */
hp100_page( PERFORMANCE );
hp100_outw( 0xfefe, IRQ_MASK ); /* mask off all ints */
hp100_outw( 0xffff, IRQ_STATUS ); /* ack IRQ */
}
/*
* open/close functions
*/
static int hp100_open( struct device *dev )
{
struct hp100_private *lp = (struct hp100_private *)dev->priv;
#ifdef HP100_DEBUG_B
int ioaddr=dev->base_addr;
#endif
#ifdef HP100_DEBUG_B
hp100_outw( 0x4204, TRACE );
printk("hp100: %s: open\n",dev->name);
#endif
/* New: if bus is PCI or EISA, interrupts might be shared interrupts */
if ( request_irq(dev->irq, hp100_interrupt,
lp->bus==HP100_BUS_PCI||lp->bus==HP100_BUS_EISA?SA_SHIRQ:SA_INTERRUPT,
lp->id->name, dev))
{
printk( "hp100: %s: unable to get IRQ %d\n", dev->name, dev->irq );
return -EAGAIN;
}
MOD_INC_USE_COUNT;
dev->tbusy = 0;
dev->trans_start = jiffies;
dev->interrupt = 0;
dev->start = 1;
lp->lan_type = hp100_sense_lan( dev );
lp->mac1_mode = HP100_MAC1MODE3;
lp->mac2_mode = HP100_MAC2MODE3;
memset( &lp->hash_bytes, 0x00, 8 );
hp100_stop_interface( dev );
hp100_hwinit( dev );
hp100_start_interface( dev ); /* sets mac modes, enables interrupts */
return 0;
}
/* The close function is called when the interface is to be brought down */
static int hp100_close( struct device *dev )
{
int ioaddr = dev->base_addr;
struct hp100_private *lp = (struct hp100_private *)dev->priv;
#ifdef HP100_DEBUG_B
hp100_outw( 0x4205, TRACE );
printk("hp100: %s: close\n", dev->name);
#endif
hp100_page( PERFORMANCE );
hp100_outw( 0xfefe, IRQ_MASK ); /* mask off all IRQs */
hp100_stop_interface( dev );
if ( lp->lan_type == HP100_LAN_100 )
lp->hub_status=hp100_login_to_vg_hub( dev, FALSE );
dev->tbusy = 1;
dev->start = 0;
free_irq( dev->irq, dev );
#ifdef HP100_DEBUG
printk( "hp100: %s: close LSW = 0x%x\n", dev->name, hp100_inw(OPTION_LSW) );
#endif
MOD_DEC_USE_COUNT;
return 0;
}
/*
* Configure the PDL Rx rings and LAN
*/
static void hp100_init_pdls( struct device *dev )
{
struct hp100_private *lp = (struct hp100_private *)dev->priv;
hp100_ring_t *ringptr;
u_int *pageptr;
int i;
#ifdef HP100_DEBUG_B
int ioaddr = dev->base_addr;
#endif
#ifdef HP100_DEBUG_B
hp100_outw( 0x4206, TRACE );
printk("hp100: %s: init pdls\n", dev->name);
#endif
if(0==lp->page_vaddr_algn)
printk("hp100: %s: Warning: lp->page_vaddr_algn not initialised!\n",dev->name);
else
{
/* pageptr shall point into the DMA accessible memory region */
/* we use this pointer to status the upper limit of allocated */
/* memory in the allocated page. */
/* note: align the pointers to the pci cache line size */
memset(lp->page_vaddr_algn, 0, MAX_RINGSIZE); /* Zero Rx/Tx ring page */
pageptr=lp->page_vaddr_algn;
lp->rxrcommit =0;
ringptr = lp->rxrhead = lp-> rxrtail = &(lp->rxring[0]);
/* Initialise Rx Ring */
for (i=MAX_RX_PDL-1; i>=0; i--)
{
lp->rxring[i].next = ringptr;
ringptr=&(lp->rxring[i]);
pageptr+=hp100_init_rxpdl(dev, ringptr, pageptr);
}
/* Initialise Tx Ring */
lp->txrcommit = 0;
ringptr = lp->txrhead = lp->txrtail = &(lp->txring[0]);
for (i=MAX_TX_PDL-1; i>=0; i--)
{
lp->txring[i].next = ringptr;
ringptr=&(lp->txring[i]);
pageptr+=hp100_init_txpdl(dev, ringptr, pageptr);
}
}
}
/* These functions "format" the entries in the pdl structure */
/* They return how much memory the fragments need. */
static int hp100_init_rxpdl( struct device *dev, register hp100_ring_t *ringptr, register u32 *pdlptr )
{
/* pdlptr is starting adress for this pdl */
if( 0!=( ((unsigned)pdlptr) & 0xf) )
printk("hp100: %s: Init rxpdl: Unaligned pdlptr 0x%x.\n",dev->name,(unsigned)pdlptr);
ringptr->pdl = pdlptr+1;
ringptr->pdl_paddr = virt_to_bus(pdlptr+1);
ringptr->skb = (void *) NULL;
/*
* Write address and length of first PDL Fragment (which is used for
* storing the RX-Header
* We use the 4 bytes _before_ the PDH in the pdl memory area to
* store this information. (PDH is at offset 0x04)
*/
/* Note that pdlptr+1 and not pdlptr is the pointer to the PDH */
*(pdlptr+2) =(u_int) virt_to_bus(pdlptr); /* Address Frag 1 */
*(pdlptr+3) = 4; /* Length Frag 1 */
return( ( ((MAX_RX_FRAG*2+2)+3) /4)*4 );
}
static int hp100_init_txpdl( struct device *dev, register hp100_ring_t *ringptr, register u32 *pdlptr )
{
if( 0!=( ((unsigned)pdlptr) & 0xf) )
printk("hp100: %s: Init txpdl: Unaligned pdlptr 0x%x.\n",dev->name,(unsigned) pdlptr);
ringptr->pdl = pdlptr; /* +1; */
ringptr->pdl_paddr = virt_to_bus(pdlptr); /* +1 */
ringptr->skb = (void *) NULL;
return((((MAX_TX_FRAG*2+2)+3)/4)*4);
}
/*
* hp100_build_rx_pdl allocates an skb_buff of maximum size plus two bytes
* for possible odd word alignment rounding up to next dword and set PDL
* address for fragment#2
* Returns: 0 if unable to allocate skb_buff
* 1 if successful
*/
int hp100_build_rx_pdl( hp100_ring_t *ringptr, struct device *dev )
{
#ifdef HP100_DEBUG_B
int ioaddr = dev->base_addr;
#endif
#ifdef HP100_DEBUG_BM
u_int *p;
#endif
#ifdef HP100_DEBUG_B
hp100_outw( 0x4207, TRACE );
printk("hp100: %s: build rx pdl\n", dev->name);
#endif
/* Allocate skb buffer of maximum size */
/* Note: This depends on the alloc_skb functions allocating more
* space than requested, i.e. aligning to 16bytes */
ringptr->skb = dev_alloc_skb( ((MAX_ETHER_SIZE+2+3)/4)*4 );
if(NULL!=ringptr->skb)
{
/*
* Reserve 2 bytes at the head of the buffer to land the IP header
* on a long word boundary (According to the Network Driver section
* in the Linux KHG, this should help to increase performance.)
*/
skb_reserve(ringptr->skb, 2);
ringptr->skb->dev=dev;
ringptr->skb->data=(u_char *)skb_put(ringptr->skb, MAX_ETHER_SIZE );
/* ringptr->pdl points to the beginning of the PDL, i.e. the PDH */
/* Note: 1st Fragment is used for the 4 byte packet status
* (receive header). Its PDL entries are set up by init_rxpdl. So
* here we only have to set up the PDL fragment entries for the data
* part. Those 4 bytes will be stored in the DMA memory region
* directly before the PDL.
*/
#ifdef HP100_DEBUG_BM
printk("hp100: %s: build_rx_pdl: PDH@0x%x, skb->data (len %d) at 0x%x\n",
dev->name,
(u_int) ringptr->pdl,
((MAX_ETHER_SIZE+2+3)/4)*4,
(unsigned int) ringptr->skb->data);
#endif
ringptr->pdl[0] = 0x00020000; /* Write PDH */
ringptr->pdl[3] = ((u_int)virt_to_bus(ringptr->skb->data));
ringptr->pdl[4] = MAX_ETHER_SIZE; /* Length of Data */
#ifdef HP100_DEBUG_BM
for(p=(ringptr->pdl); p<(ringptr->pdl+5); p++)
printk("hp100: %s: Adr 0x%.8x = 0x%.8x\n",dev->name,(u_int) p,(u_int) *p );
#endif
return(1);
}
/* else: */
/* alloc_skb failed (no memory) -> still can receive the header
* fragment into PDL memory. make PDL safe by clearing msgptr and
* making the PDL only 1 fragment (i.e. the 4 byte packet status)
*/
#ifdef HP100_DEBUG_BM
printk("hp100: %s: build_rx_pdl: PDH@0x%x, No space for skb.\n",
dev->name,
(u_int) ringptr->pdl);
#endif
ringptr->pdl[0]=0x00010000; /* PDH: Count=1 Fragment */
return(0);
}
/*
* hp100_rxfill - attempt to fill the Rx Ring will empty skb's
*
* Makes assumption that skb's are always contiguous memory areas and
* therefore PDLs contain only 2 physical fragments.
* - While the number of Rx PDLs with buffers is less than maximum
* a. Get a maximum packet size skb
* b. Put the physical address of the buffer into the PDL.
* c. Output physical address of PDL to adapter.
*/
static void hp100_rxfill( struct device *dev )
{
int ioaddr=dev->base_addr;
struct hp100_private *lp = (struct hp100_private *)dev->priv;
hp100_ring_t *ringptr;
#ifdef HP100_DEBUG_B
hp100_outw( 0x4208, TRACE );
printk("hp100: %s: rxfill\n",dev->name);
#endif
hp100_page( PERFORMANCE );
while (lp->rxrcommit < MAX_RX_PDL)
{
/*
** Attempt to get a buffer and build a Rx PDL.
*/
ringptr = lp->rxrtail;
if (0 == hp100_build_rx_pdl( ringptr, dev ))
{
return; /* None available, return */
}
/* Hand this PDL over to the card */
/* Note: This needs performance page selected! */
#ifdef HP100_DEBUG_BM
printk("hp100: %s: rxfill: Hand to card: pdl #%d @0x%x phys:0x%x, buffer: 0x%x\n",
dev->name,
lp->rxrcommit,
(u_int)ringptr->pdl,
(u_int)ringptr->pdl_paddr,
(u_int)ringptr->pdl[3]);
#endif
hp100_outl( (u32)ringptr->pdl_paddr, RX_PDA);
lp->rxrcommit += 1;
lp->rxrtail = ringptr->next;
}
}
/*
* BM_shutdown - shutdown bus mastering and leave chip in reset state
*/
static void hp100_BM_shutdown( struct device *dev )
{
int ioaddr = dev->base_addr;
struct hp100_private *lp = (struct hp100_private *)dev->priv;
unsigned long time;
#ifdef HP100_DEBUG_B
hp100_outw( 0x4209, TRACE );
printk("hp100: %s: bm shutdown\n",dev->name);
#endif
hp100_page( PERFORMANCE );
hp100_outw( 0xfefe, IRQ_MASK ); /* mask off all ints */
hp100_outw( 0xffff, IRQ_STATUS ); /* Ack all ints */
/* Ensure Interrupts are off */
hp100_outw( HP100_INT_EN | HP100_RESET_LB , OPTION_LSW );
/* Disable all MAC activity */
hp100_page( MAC_CTRL );
hp100_andb( ~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1 ); /* stop rx/tx */
/* If cascade MMU is not already in reset */
if (0 != (hp100_inw(OPTION_LSW)&HP100_HW_RST) )
{
/* Wait 1.3ms (10Mb max packet time) to ensure MAC is idle so
* MMU pointers will not be reset out from underneath
*/
hp100_page( MAC_CTRL );
for(time=0; time<5000; time++)
{
if( (hp100_inb(MAC_CFG_1)&(HP100_TX_IDLE|HP100_RX_IDLE))==
(HP100_TX_IDLE|HP100_RX_IDLE) ) break;
}
/* Shutdown algorithm depends on the generation of Cascade */
if( lp->chip==HP100_CHIPID_LASSEN )
{ /* ETR shutdown/reset */
/* Disable Busmaster mode and wait for bit to go to zero. */
hp100_page(HW_MAP);
hp100_andb( ~HP100_BM_MASTER, BM );
/* 100 ms timeout */
for(time=0; time<32000; time++)
{
if ( 0 == (hp100_inb( BM ) & HP100_BM_MASTER) ) break;
}
}
else
{ /* Shasta or Rainier Shutdown/Reset */
/* To ensure all bus master inloading activity has ceased,
* wait for no Rx PDAs or no Rx packets on card.
*/
hp100_page( PERFORMANCE );
/* 100 ms timeout */
for(time=0; time<10000; time++)
{
/* RX_PDL: PDLs not executed. */
/* RX_PKT_CNT: RX'd packets on card. */
if ( (hp100_inb( RX_PDL ) == 0) &&
(hp100_inb( RX_PKT_CNT ) == 0) ) break;
}
if(time>=10000)
printk("hp100: %s: BM shutdown error.\n", dev->name);
/* To ensure all bus master outloading activity has ceased,
* wait until the Tx PDA count goes to zero or no more Tx space
* available in the Tx region of the card.
*/
/* 100 ms timeout */
for(time=0; time<10000; time++) {
if ( (0 == hp100_inb( TX_PKT_CNT )) &&
(0 != (hp100_inb( TX_MEM_FREE )&HP100_AUTO_COMPARE))) break;
}
/* Disable Busmaster mode */
hp100_page(HW_MAP);
hp100_andb( ~HP100_BM_MASTER, BM );
} /* end of shutdown procedure for non-etr parts */
hp100_cascade_reset( dev, TRUE );
}
hp100_page( PERFORMANCE );
/* hp100_outw( HP100_BM_READ | HP100_BM_WRITE | HP100_RESET_HB, OPTION_LSW ); */
/* Busmaster mode should be shut down now. */
}
/*
* transmit functions
*/
/* tx function for busmaster mode */
static int hp100_start_xmit_bm( struct sk_buff *skb, struct device *dev )
{
int i, ok_flag;
int ioaddr = dev->base_addr;
struct hp100_private *lp = (struct hp100_private *)dev->priv;
hp100_ring_t *ringptr;
#ifdef HP100_DEBUG_B
hp100_outw( 0x4210, TRACE );
printk("hp100: %s: start_xmit_bm\n",dev->name);
#endif
if ( skb==NULL )
{
dev_tint( dev );
return 0;
}
if ( skb->len <= 0 ) return 0;
/* Get Tx ring tail pointer */
if( lp->txrtail->next==lp->txrhead )
{
/* No memory. */
#ifdef HP100_DEBUG
printk("hp100: %s: start_xmit_bm: No TX PDL available.\n", dev->name);
#endif
/* not waited long enough since last tx? */
if ( jiffies - dev->trans_start < HZ/10 ) return -EAGAIN;
if ( lp->lan_type < 0 ) /* no LAN type detected yet? */
{
hp100_stop_interface( dev );
if ( ( lp->lan_type = hp100_sense_lan( dev ) ) < 0 )
{
printk( "hp100: %s: no connection found - check wire\n", dev->name );
hp100_start_interface( dev ); /* 10Mb/s RX pkts maybe handled */
return -EIO;
}
if ( lp->lan_type == HP100_LAN_100 )
lp->hub_status = hp100_login_to_vg_hub( dev, FALSE ); /* relogin */
hp100_start_interface( dev );
}
if ( lp->lan_type == HP100_LAN_100 && lp->hub_status < 0 )
/* we have a 100Mb/s adapter but it isn't connected to hub */
{
printk( "hp100: %s: login to 100Mb/s hub retry\n", dev->name );
hp100_stop_interface( dev );
lp->hub_status = hp100_login_to_vg_hub( dev, FALSE );
hp100_start_interface( dev );
}
else
{
hp100_ints_off();
i = hp100_sense_lan( dev );
hp100_ints_on();
if ( i == HP100_LAN_ERR )
printk( "hp100: %s: link down detected\n", dev->name );
else
if ( lp->lan_type != i ) /* cable change! */
{
/* it's very hard - all network setting must be changed!!! */
printk( "hp100: %s: cable change 10Mb/s <-> 100Mb/s detected\n", dev->name );
lp->lan_type = i;
hp100_stop_interface( dev );
if ( lp->lan_type == HP100_LAN_100 )
lp->hub_status = hp100_login_to_vg_hub( dev, FALSE );
hp100_start_interface( dev );
}
else
{
printk( "hp100: %s: interface reset\n", dev->name );
hp100_stop_interface( dev );
hp100_start_interface( dev );
}
}
dev->trans_start = jiffies;
return -EAGAIN;
}
/*
* we have to turn int's off before modifying this, otherwise
* a tx_pdl_cleanup could occur at the same time
*/
cli();
ringptr=lp->txrtail;
lp->txrtail=ringptr->next;
/* Check whether packet has minimal packet size */
ok_flag = skb->len >= HP100_MIN_PACKET_SIZE;
i = ok_flag ? skb->len : HP100_MIN_PACKET_SIZE;
ringptr->skb=skb;
ringptr->pdl[0]=((1<<16) | i); /* PDH: 1 Fragment & length */
ringptr->pdl[1]=(u32)virt_to_bus(skb->data); /* 1st Frag: Adr. of data */
if(lp->chip==HP100_CHIPID_SHASTA)
{
/* TODO:Could someone who has the EISA card please check if this works? */
ringptr->pdl[2]=i;
}
else /* Lassen */
{
/* In the PDL, don't use the padded size but the real packet size: */
ringptr->pdl[2]=skb->len; /* 1st Frag: Length of frag */
}
/* Hand this PDL to the card. */
hp100_outl( ringptr->pdl_paddr, TX_PDA_L ); /* Low Prio. Queue */
lp->txrcommit++;
sti();
/* Update statistics */
lp->stats.tx_packets++;
#ifdef LINUX_2_1
lp->stats.tx_bytes += skb->len;
#endif
dev->trans_start = jiffies;
return 0;
}
/* clean_txring checks if packets have been sent by the card by reading
* the TX_PDL register from the performance page and comparing it to the
* number of commited packets. It then frees the skb's of the packets that
* obviously have been sent to the network.
*
* Needs the PERFORMANCE page selected.
*/
static void hp100_clean_txring( struct device *dev )
{
struct hp100_private *lp = (struct hp100_private *)dev->priv;
int ioaddr = dev->base_addr;
int donecount;
#ifdef HP100_DEBUG_B
hp100_outw( 0x4211, TRACE );
printk("hp100: %s: clean txring\n", dev->name);
#endif
/* How many PDLs have been transmitted? */
donecount=(lp->txrcommit)-hp100_inb(TX_PDL);
#ifdef HP100_DEBUG
if(donecount>MAX_TX_PDL)
printk("hp100: %s: Warning: More PDLs transmitted than commited to card???\n",dev->name);
#endif
for( ; 0!=donecount; donecount-- )
{
#ifdef HP100_DEBUG_BM
printk("hp100: %s: Free skb: data @0x%.8x txrcommit=0x%x TXPDL=0x%x, done=0x%x\n",
dev->name,
(u_int) lp->txrhead->skb->data,
lp->txrcommit,
hp100_inb(TX_PDL),
donecount);
#endif
dev_kfree_skb( lp->txrhead->skb, FREE_WRITE );
lp->txrhead->skb=(void *)NULL;
lp->txrhead=lp->txrhead->next;
lp->txrcommit--;
}
}
/* tx function for slave modes */
static int hp100_start_xmit( struct sk_buff *skb, struct device *dev )
{
int i, ok_flag;
int ioaddr = dev->base_addr;
u_short val;
struct hp100_private *lp = (struct hp100_private *)dev->priv;
#ifdef HP100_DEBUG_B
hp100_outw( 0x4212, TRACE );
printk("hp100: %s: start_xmit\n", dev->name);
#endif
if ( lp->lan_type < 0 ) /* no LAN type detected yet? */
{
hp100_stop_interface( dev );
if ( ( lp->lan_type = hp100_sense_lan( dev ) ) < 0 )
{
printk( "hp100: %s: no connection found - check wire\n", dev->name );
hp100_start_interface( dev ); /* 10Mb/s RX packets maybe handled */
return -EIO;
}
if ( lp->lan_type == HP100_LAN_100 )
lp->hub_status = hp100_login_to_vg_hub( dev, FALSE ); /* relogin */
hp100_start_interface( dev );
}
/* If there is not enough free memory on the card... */
i=hp100_inl(TX_MEM_FREE)&0x7fffffff;
if ( !(((i/2)-539)>(skb->len+16) && (hp100_inb(TX_PKT_CNT)<255)) )
{
#ifdef HP100_DEBUG
printk( "hp100: %s: start_xmit: tx free mem = 0x%x\n", dev->name, i );
#endif
/* not waited long enough since last failed tx try? */
if ( jiffies - dev->trans_start < HZ/2 )
{
#ifdef HP100_DEBUG
printk("hp100: %s: trans_start timing problem\n", dev->name);
#endif
return -EAGAIN;
}
if ( lp->lan_type == HP100_LAN_100 && lp->hub_status < 0 )
/* we have a 100Mb/s adapter but it isn't connected to hub */
{
printk( "hp100: %s: login to 100Mb/s hub retry\n", dev->name );
hp100_stop_interface( dev );
lp->hub_status = hp100_login_to_vg_hub( dev, FALSE );
hp100_start_interface( dev );
}
else
{
hp100_ints_off();
i = hp100_sense_lan( dev );
hp100_ints_on();
if ( i == HP100_LAN_ERR )
printk( "hp100: %s: link down detected\n", dev->name );
else
if ( lp->lan_type != i ) /* cable change! */
{
/* it's very hard - all network setting must be changed!!! */
printk( "hp100: %s: cable change 10Mb/s <-> 100Mb/s detected\n", dev->name );
lp->lan_type = i;
hp100_stop_interface( dev );
if ( lp->lan_type == HP100_LAN_100 )
lp->hub_status = hp100_login_to_vg_hub( dev, FALSE );
hp100_start_interface( dev );
}
else
{
printk( "hp100: %s: interface reset\n", dev->name );
hp100_stop_interface( dev );
hp100_start_interface( dev );
udelay(1000);
}
}
dev->trans_start = jiffies;
return -EAGAIN;
}
for ( i=0; i<6000 && ( hp100_inb( OPTION_MSW ) & HP100_TX_CMD ); i++ )
{
#ifdef HP100_DEBUG_TX
printk( "hp100: %s: start_xmit: busy\n", dev->name );
#endif
}
hp100_ints_off();
val = hp100_inw( IRQ_STATUS );
/* Ack / clear the interrupt TX_COMPLETE interrupt - this interrupt is set
* when the current packet being transmitted on the wire is completed. */
hp100_outw( HP100_TX_COMPLETE, IRQ_STATUS );
#ifdef HP100_DEBUG_TX
printk("hp100: %s: start_xmit: irq_status=0x%.4x, irqmask=0x%.4x, len=%d\n",dev->name,val,hp100_inw(IRQ_MASK),(int)skb->len );
#endif
ok_flag = skb->len >= HP100_MIN_PACKET_SIZE;
i = ok_flag ? skb->len : HP100_MIN_PACKET_SIZE;
hp100_outw( i, DATA32 ); /* tell card the total packet length */
hp100_outw( i, FRAGMENT_LEN ); /* and first/only fragment length */
if ( lp->mode==2 ) /* memory mapped */
{
if ( lp->mem_ptr_virt ) /* high pci memory was remapped */
{
/* Note: The J2585B needs alignment to 32bits here! */
memcpy( lp->mem_ptr_virt, skb->data, ( skb->len +3 ) & ~3 );
if ( !ok_flag )
memset( lp->mem_ptr_virt, 0, HP100_MIN_PACKET_SIZE - skb->len );
}
else
{
memcpy_toio( lp->mem_ptr_phys, skb->data, skb->len );
if ( !ok_flag )
memset_io( lp->mem_ptr_phys, 0, HP100_MIN_PACKET_SIZE - skb->len );
}
}
else /* programmed i/o */
{
outsl( ioaddr + HP100_REG_DATA32, skb->data, ( skb->len + 3 ) >> 2 );
if ( !ok_flag )
for ( i = ( skb->len + 3 ) & ~3; i < HP100_MIN_PACKET_SIZE; i += 4 )
hp100_outl( 0, DATA32 );
}
hp100_outb( HP100_TX_CMD | HP100_SET_LB, OPTION_MSW ); /* send packet */
lp->stats.tx_packets++;
#ifdef LINUX_2_1
lp->stats.tx_bytes += skb->len;
#endif
dev->trans_start=jiffies;
hp100_ints_on();
dev_kfree_skb( skb, FREE_WRITE );
#ifdef HP100_DEBUG_TX
printk( "hp100: %s: start_xmit: end\n", dev->name );
#endif
return 0;
}
/*
* Receive Function (Non-Busmaster mode)
* Called when an "Receive Packet" interrupt occurs, i.e. the receive
* packet counter is non-zero.
* For non-busmaster, this function does the whole work of transfering
* the packet to the host memory and then up to higher layers via skb
* and netif_rx.
*/
static void hp100_rx( struct device *dev )
{
int packets, pkt_len;
int ioaddr = dev->base_addr;
struct hp100_private *lp = (struct hp100_private *)dev->priv;
u_int header;
struct sk_buff *skb;
#ifdef DEBUG_B
hp100_outw( 0x4213, TRACE );
printk("hp100: %s: rx\n", dev->name);
#endif
/* First get indication of received lan packet */
/* RX_PKT_CND indicates the number of packets which have been fully */
/* received onto the card but have not been fully transfered of the card */
packets = hp100_inb( RX_PKT_CNT );
#ifdef HP100_DEBUG_RX
if ( packets > 1 )
printk( "hp100: %s: rx: waiting packets = %d\n", dev->name,packets );
#endif
while ( packets-- > 0 )
{
/* If ADV_NXT_PKT is still set, we have to wait until the card has */
/* really advanced to the next packet. */
for (pkt_len=0; pkt_len<6000 &&(hp100_inb(OPTION_MSW)&HP100_ADV_NXT_PKT);
pkt_len++ )
{
#ifdef HP100_DEBUG_RX
printk( "hp100: %s: rx: busy, remaining packets = %d\n", dev->name, packets );
#endif
}
/* First we get the header, which contains information about the */
/* actual length of the received packet. */
if( lp->mode==2 ) /* memory mapped mode */
{
if ( lp->mem_ptr_virt ) /* if memory was remapped */
header = *(__u32 *)lp->mem_ptr_virt;
else
header = readl( lp->mem_ptr_phys );
}
else /* programmed i/o */
header = hp100_inl( DATA32 );
pkt_len = header & HP100_PKT_LEN_MASK;
#ifdef HP100_DEBUG_RX
printk( "hp100: %s: rx: new packet - length=%d, errors=0x%x, dest=0x%x\n",
dev->name,
header & HP100_PKT_LEN_MASK, (header>>16)&0xfff8,
(header>>16)&7);
#endif
/* Now we allocate the skb and transfer the data into it. */
/* NOTE! This (and the skb_put() below) depends on the skb-functions
* allocating more than asked (notably, aligning the request up to
* the next 16-byte length).
*/
skb = dev_alloc_skb( pkt_len );
if ( skb == NULL ) /* Not enough memory->drop packet */
{
#ifdef HP100_DEBUG
printk( "hp100: %s: rx: couldn't allocate a sk_buff of size %d\n", dev->name, pkt_len );
#endif
lp->stats.rx_dropped++;
}
else /* skb successfully allocated */
{
u_char *ptr;
skb->dev = dev;
/* ptr to start of the sk_buff data area */
ptr = (u_char *)skb_put( skb, pkt_len );
/* Now transfer the data from the card into that area */
if ( lp->mode==2 )
{
if ( lp->mem_ptr_virt )
memcpy( ptr, lp->mem_ptr_virt, ( pkt_len + 3 ) & ~3 );
/* Note alignment to 32bit transfers */
else
memcpy_fromio( ptr, lp->mem_ptr_phys, ( pkt_len + 3 ) & ~3 );
}
else /* io mapped */
insl( ioaddr + HP100_REG_DATA32, ptr, ( pkt_len + 3 ) >> 2 );
skb->protocol = eth_type_trans( skb, dev );
netif_rx( skb );
lp->stats.rx_packets++;
#ifdef LINUX_2_1
lp->stats.rx_bytes += skb->len;
#endif
#ifdef HP100_DEBUG_RX
printk( "hp100: %s: rx: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
dev->name,
ptr[ 0 ], ptr[ 1 ], ptr[ 2 ], ptr[ 3 ], ptr[ 4 ], ptr[ 5 ],
ptr[ 6 ], ptr[ 7 ], ptr[ 8 ], ptr[ 9 ], ptr[ 10 ], ptr[ 11 ] );
#endif
}
/* Indicate the card that we have got the packet */
hp100_outb( HP100_ADV_NXT_PKT | HP100_SET_LB, OPTION_MSW );
switch ( header & 0x00070000 ) {
case (HP100_MULTI_ADDR_HASH<<16):
case (HP100_MULTI_ADDR_NO_HASH<<16):
lp->stats.multicast++; break;
}
} /* end of while(there are packets) loop */
#ifdef HP100_DEBUG_RX
printk( "hp100_rx: %s: end\n", dev->name );
#endif
}
/*
* Receive Function for Busmaster Mode
*/
static void hp100_rx_bm( struct device *dev )
{
int ioaddr = dev->base_addr;
struct hp100_private *lp = (struct hp100_private *)dev->priv;
hp100_ring_t *ptr;
u_int header;
int pkt_len;
#ifdef HP100_DEBUG_B
hp100_outw( 0x4214, TRACE );
printk("hp100: %s: rx_bm\n", dev->name);
#endif
#ifdef HP100_DEBUG
if(0==lp->rxrcommit)
{
printk("hp100: %s: rx_bm called although no PDLs were committed to adapter?\n", dev->name);
return;
}
else
/* RX_PKT_CNT states how many PDLs are currently formatted and available to
* the cards BM engine */
if( (hp100_inw(RX_PKT_CNT)&0x00ff) >= lp->rxrcommit)
{
printk("hp100: %s: More packets received than commited? RX_PKT_CNT=0x%x, commit=0x%x\n", dev->name, hp100_inw(RX_PKT_CNT)&0x00ff, lp->rxrcommit);
return;
}
#endif
while( (lp->rxrcommit > hp100_inb(RX_PDL)) )
{
/*
* The packet was received into the pdl pointed to by lp->rxrhead (
* the oldest pdl in the ring
*/
/* First we get the header, which contains information about the */
/* actual length of the received packet. */
ptr=lp->rxrhead;
header = *(ptr->pdl-1);
pkt_len = (header & HP100_PKT_LEN_MASK);
#ifdef HP100_DEBUG_BM
printk( "hp100: %s: rx_bm: header@0x%x=0x%x length=%d, errors=0x%x, dest=0x%x\n",
dev->name,
(u_int) (ptr->pdl-1),(u_int) header,
pkt_len,
(header>>16)&0xfff8,
(header>>16)&7);
printk( "hp100: %s: RX_PDL_COUNT:0x%x TX_PDL_COUNT:0x%x, RX_PKT_CNT=0x%x PDH=0x%x, Data@0x%x len=0x%x\n",
dev->name,
hp100_inb( RX_PDL ),
hp100_inb( TX_PDL ),
hp100_inb( RX_PKT_CNT ),
(u_int) *(ptr->pdl),
(u_int) *(ptr->pdl+3),
(u_int) *(ptr->pdl+4));
#endif
if( (pkt_len>=MIN_ETHER_SIZE) &&
(pkt_len<=MAX_ETHER_SIZE) )
{
if(ptr->skb==NULL)
{
printk("hp100: %s: rx_bm: skb null\n", dev->name);
/* can happen if we only allocated room for the pdh due to memory shortage. */
lp->stats.rx_dropped++;
}
else
{
skb_trim( ptr->skb, pkt_len ); /* Shorten it */
ptr->skb->protocol = eth_type_trans( ptr->skb, dev );
netif_rx( ptr->skb ); /* Up and away... */
lp->stats.rx_packets++;
#ifdef LINUX_2_1
lp->stats.rx_bytes += ptr->skb->len;
#endif
}
switch ( header & 0x00070000 ) {
case (HP100_MULTI_ADDR_HASH<<16):
case (HP100_MULTI_ADDR_NO_HASH<<16):
lp->stats.multicast++; break;
}
}
else
{
#ifdef HP100_DEBUG
printk("hp100: %s: rx_bm: Received bad packet (length=%d)\n",dev->name,pkt_len);
#endif
if(ptr->skb!=NULL)
dev_kfree_skb( ptr->skb, FREE_READ );
lp->stats.rx_errors++;
}
lp->rxrhead=lp->rxrhead->next;
/* Allocate a new rx PDL (so lp->rxrcommit stays the same) */
if (0 == hp100_build_rx_pdl( lp->rxrtail, dev ))
{
/* No space for skb, header can still be received. */
#ifdef HP100_DEBUG
printk("hp100: %s: rx_bm: No space for new PDL.\n", dev->name);
#endif
return;
}
else
{ /* successfully allocated new PDL - put it in ringlist at tail. */
hp100_outl((u32)lp->rxrtail->pdl_paddr, RX_PDA);
lp->rxrtail=lp->rxrtail->next;
}
}
}
/*
* statistics
*/
static hp100_stats_t *hp100_get_stats( struct device *dev )
{
int ioaddr = dev->base_addr;
#ifdef HP100_DEBUG_B
hp100_outw( 0x4215, TRACE );
#endif
hp100_ints_off();
hp100_update_stats( dev );
hp100_ints_on();
return &((struct hp100_private *)dev->priv)->stats;
}
static void hp100_update_stats( struct device *dev )
{
int ioaddr = dev->base_addr;
u_short val;
struct hp100_private *lp = (struct hp100_private *)dev->priv;
#ifdef HP100_DEBUG_B
hp100_outw( 0x4216, TRACE );
printk("hp100: %s: update-stats\n", dev->name);
#endif
/* Note: Statistics counters clear when read. */
hp100_page( MAC_CTRL );
val = hp100_inw( DROPPED ) & 0x0fff;
lp->stats.rx_errors += val;
lp->stats.rx_over_errors += val;
val = hp100_inb( CRC );
lp->stats.rx_errors += val;
lp->stats.rx_crc_errors += val;
val = hp100_inb( ABORT );
lp->stats.tx_errors += val;
lp->stats.tx_aborted_errors += val;
hp100_page( PERFORMANCE );
}
static void hp100_clear_stats( int ioaddr )
{
#ifdef HP100_DEBUG_B
hp100_outw( 0x4217, TRACE );
printk("hp100: %s: clear_stats\n", dev->name);
#endif
cli();
hp100_page( MAC_CTRL ); /* get all statistics bytes */
hp100_inw( DROPPED );
hp100_inb( CRC );
hp100_inb( ABORT );
hp100_page( PERFORMANCE );
sti();
}
/*
* multicast setup
*/
/*
* Set or clear the multicast filter for this adapter.
*/
static void hp100_set_multicast_list( struct device *dev)
{
int ioaddr = dev->base_addr;
struct hp100_private *lp = (struct hp100_private *)dev->priv;
#ifdef HP100_DEBUG_B
hp100_outw( 0x4218, TRACE );
printk("hp100: %s: set_mc_list\n", dev->name);
#endif
cli();
hp100_ints_off();
hp100_page( MAC_CTRL );
hp100_andb( ~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1 ); /* stop rx/tx */
if ( dev->flags & IFF_PROMISC )
{
lp->mac2_mode = HP100_MAC2MODE6; /* promiscuous mode = get all good */
lp->mac1_mode = HP100_MAC1MODE6; /* packets on the net */
memset( &lp->hash_bytes, 0xff, 8 );
}
else if ( dev->mc_count || (dev->flags&IFF_ALLMULTI) )
{
lp->mac2_mode = HP100_MAC2MODE5; /* multicast mode = get packets for */
lp->mac1_mode = HP100_MAC1MODE5; /* me, broadcasts and all multicasts */
#ifdef HP100_MULTICAST_FILTER /* doesn't work!!! */
if ( dev -> flags & IFF_ALLMULTI )
{
/* set hash filter to receive all multicast packets */
memset( &lp->hash_bytes, 0xff, 8 );
}
else
{
int i, j, idx;
u_char *addrs;
struct dev_mc_list *dmi;
memset( &lp->hash_bytes, 0x00, 8 );
#ifdef HP100_DEBUG
printk("hp100: %s: computing hash filter - mc_count = %i\n", dev -> name, dev -> mc_count );
#endif
for ( i = 0, dmi = dev -> mc_list; i < dev -> mc_count; i++, dmi = dmi -> next )
{
addrs = dmi -> dmi_addr;
if ( ( *addrs & 0x01 ) == 0x01 ) /* multicast address? */
{
#ifdef HP100_DEBUG
printk("hp100: %s: multicast = %02x:%02x:%02x:%02x:%02x:%02x, ",
dev -> name,
addrs[ 0 ], addrs[ 1 ], addrs[ 2 ],
addrs[ 3 ], addrs[ 4 ], addrs[ 5 ] );
#endif
for ( j = idx = 0; j < 6; j++ )
{
idx ^= *addrs++ & 0x3f;
printk( ":%02x:", idx );
}
#ifdef HP100_DEBUG
printk("idx = %i\n", idx );
#endif
lp->hash_bytes[ idx >> 3 ] |= ( 1 << ( idx & 7 ) );
}
}
}
#else
memset( &lp->hash_bytes, 0xff, 8 );
#endif
}
else
{
lp->mac2_mode = HP100_MAC2MODE3; /* normal mode = get packets for me */
lp->mac1_mode = HP100_MAC1MODE3; /* and broadcasts */
memset( &lp->hash_bytes, 0x00, 8 );
}
if ( ( (hp100_inb(MAC_CFG_1) & 0x0f)!=lp->mac1_mode ) ||
( hp100_inb(MAC_CFG_2)!=lp->mac2_mode ) )
{
int i;
hp100_outb( lp->mac2_mode, MAC_CFG_2 );
hp100_andb( HP100_MAC1MODEMASK, MAC_CFG_1 ); /* clear mac1 mode bits */
hp100_orb( lp->mac1_mode, MAC_CFG_1 ); /* and set the new mode */
hp100_page( MAC_ADDRESS );
for ( i = 0; i < 8; i++ )
hp100_outb( lp->hash_bytes[ i ], HASH_BYTE0 + i );
#ifdef HP100_DEBUG
printk("hp100: %s: mac1 = 0x%x, mac2 = 0x%x, multicast hash = %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
dev->name, lp->mac1_mode, lp->mac2_mode,
lp->hash_bytes[ 0 ], lp->hash_bytes[ 1 ],
lp->hash_bytes[ 2 ], lp->hash_bytes[ 3 ],
lp->hash_bytes[ 4 ], lp->hash_bytes[ 5 ],
lp->hash_bytes[ 6 ], lp->hash_bytes[ 7 ]
);
#endif
if(lp->lan_type==HP100_LAN_100)
{
#ifdef HP100_DEBUG
printk("hp100: %s: 100VG MAC settings have changed - relogin.\n", dev->name);
#endif
lp->hub_status=hp100_login_to_vg_hub( dev, TRUE ); /* force a relogin to the hub */
}
}
else
{
int i;
u_char old_hash_bytes[ 8 ];
hp100_page( MAC_ADDRESS );
for ( i = 0; i < 8; i++ )
old_hash_bytes[ i ] = hp100_inb( HASH_BYTE0 + i );
if ( memcmp( old_hash_bytes, &lp->hash_bytes, 8 ) )
{
for ( i = 0; i < 8; i++ )
hp100_outb( lp->hash_bytes[ i ], HASH_BYTE0 + i );
#ifdef HP100_DEBUG
printk("hp100: %s: multicast hash = %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
dev->name,
lp->hash_bytes[ 0 ], lp->hash_bytes[ 1 ],
lp->hash_bytes[ 2 ], lp->hash_bytes[ 3 ],
lp->hash_bytes[ 4 ], lp->hash_bytes[ 5 ],
lp->hash_bytes[ 6 ], lp->hash_bytes[ 7 ]
);
#endif
if(lp->lan_type==HP100_LAN_100)
{
#ifdef HP100_DEBUG
printk("hp100: %s: 100VG MAC settings have changed - relogin.\n", dev->name);
#endif
lp->hub_status=hp100_login_to_vg_hub( dev, TRUE ); /* force a relogin to the hub */
}
}
}
hp100_page( MAC_CTRL );
hp100_orb( HP100_RX_EN | HP100_RX_IDLE | /* enable rx */
HP100_TX_EN | HP100_TX_IDLE, MAC_CFG_1 ); /* enable tx */
hp100_page( PERFORMANCE );
hp100_ints_on();
sti();
}
/*
* hardware interrupt handling
*/
static void hp100_interrupt( int irq, void *dev_id, struct pt_regs *regs )
{
struct device *dev = (struct device *)dev_id;
struct hp100_private *lp = (struct hp100_private *)dev->priv;
int ioaddr;
u_int val;
if ( dev == NULL ) return;
ioaddr = dev->base_addr;
if ( dev->interrupt )
printk( "hp100: %s: re-entering the interrupt handler\n", dev->name );
hp100_ints_off();
dev->interrupt = 1; /* mark that we are inside the handler */
#ifdef HP100_DEBUG_B
hp100_outw( 0x4219, TRACE );
#endif
/* hp100_page( PERFORMANCE ); */
val = hp100_inw( IRQ_STATUS );
#ifdef HP100_DEBUG_IRQ
printk( "hp100: %s: mode=%x,IRQ_STAT=0x%.4x,RXPKTCNT=0x%.2x RXPDL=0x%.2x TXPKTCNT=0x%.2x TXPDL=0x%.2x\n",
dev->name,
lp->mode,
(u_int)val,
hp100_inb( RX_PKT_CNT ),
hp100_inb( RX_PDL ),
hp100_inb( TX_PKT_CNT ),
hp100_inb( TX_PDL )
);
#endif
if(val==0) /* might be a shared interrupt */
{
dev->interrupt=0;
hp100_ints_on();
return;
}
/* We're only interested in those interrupts we really enabled. */
/* val &= hp100_inw( IRQ_MASK ); */
/*
* RX_PDL_FILL_COMPL is set whenever a RX_PDL has been executed. A RX_PDL
* is considered executed whenever the RX_PDL data structure is no longer
* needed.
*/
if ( val & HP100_RX_PDL_FILL_COMPL )
{
if(lp->mode==1)
hp100_rx_bm( dev );
else
{
printk("hp100: %s: rx_pdl_fill_compl interrupt although not busmaster?\n", dev->name);
}
}
/*
* The RX_PACKET interrupt is set, when the receive packet counter is
* non zero. We use this interrupt for receiving in slave mode. In
* busmaster mode, we use it to make sure we did not miss any rx_pdl_fill
* interrupts. If rx_pdl_fill_compl is not set and rx_packet is set, then
* we somehow have missed a rx_pdl_fill_compl interrupt.
*/
if ( val & HP100_RX_PACKET ) /* Receive Packet Counter is non zero */
{
if(lp->mode!=1) /* non busmaster */
hp100_rx( dev );
else if ( !(val & HP100_RX_PDL_FILL_COMPL ))
{
/* Shouldnt happen - maybe we missed a RX_PDL_FILL Interrupt? */
hp100_rx_bm( dev );
}
}
/*
* Ack. that we have noticed the interrupt and thereby allow next one.
* Note that this is now done after the slave rx function, since first
* acknowledging and then setting ADV_NXT_PKT caused an extra interrupt
* on the J2573.
*/
hp100_outw( val, IRQ_STATUS );
/*
* RX_ERROR is set when a packet is dropped due to no memory resources on
* the card or when a RCV_ERR occurs.
* TX_ERROR is set when a TX_ABORT condition occurs in the MAC->exists
* only in the 802.3 MAC and happens when 16 collisions occur during a TX
*/
if ( val & ( HP100_TX_ERROR | HP100_RX_ERROR ) )
{
#ifdef HP100_DEBUG_IRQ
printk("hp100: %s: TX/RX Error IRQ\n", dev->name);
#endif
hp100_update_stats( dev );
if(lp->mode==1)
{
hp100_rxfill( dev );
hp100_clean_txring( dev );
}
}
/*
* RX_PDA_ZERO is set when the PDA count goes from non-zero to zero.
*/
if ( (lp->mode==1)&&(val &(HP100_RX_PDA_ZERO)) )
hp100_rxfill( dev );
/*
* HP100_TX_COMPLETE interrupt occurs when packet transmitted on wire
* is completed
*/
if ( (lp->mode==1) && ( val & ( HP100_TX_COMPLETE )) )
hp100_clean_txring( dev );
/*
* MISC_ERROR is set when either the LAN link goes down or a detected
* bus error occurs.
*/
if ( val & HP100_MISC_ERROR ) /* New for J2585B */
{
printk("hp100: %s: Misc. Error Interrupt - Check cabling.\n", dev->name);
if(lp->mode==1)
{
hp100_clean_txring( dev );
hp100_rxfill( dev );
}
}
dev->interrupt = 0;
hp100_ints_on();
}
/*
* some misc functions
*/
static void hp100_start_interface( struct device *dev )
{
int ioaddr = dev->base_addr;
struct hp100_private *lp = (struct hp100_private *)dev->priv;
#ifdef HP100_DEBUG_B
hp100_outw( 0x4220, TRACE );
printk("hp100: %s: hp100_start_interface\n",dev->name);
#endif
cli();
/* Ensure the adapter does not want to request an interrupt when */
/* enabling the IRQ line to be active on the bus (i.e. not tri-stated) */
hp100_page( PERFORMANCE );
hp100_outw( 0xfefe, IRQ_MASK ); /* mask off all ints */
hp100_outw( 0xffff, IRQ_STATUS ); /* ack all IRQs */
hp100_outw( HP100_FAKE_INT|HP100_INT_EN|HP100_RESET_LB, OPTION_LSW);
/* Un Tri-state int. TODO: Check if shared interrupts can be realised? */
hp100_outw( HP100_TRI_INT | HP100_RESET_HB, OPTION_LSW );
if(lp->mode==1)
{
/* Make sure BM bit is set... */
hp100_page(HW_MAP);
hp100_orb( HP100_BM_MASTER, BM );
hp100_rxfill( dev );
}
else if(lp->mode==2)
{
/* Enable memory mapping. Note: Don't do this when busmaster. */
hp100_outw( HP100_MMAP_DIS | HP100_RESET_HB, OPTION_LSW );
}
hp100_page(PERFORMANCE);
hp100_outw( 0xfefe, IRQ_MASK ); /* mask off all ints */
hp100_outw( 0xffff, IRQ_STATUS ); /* ack IRQ */
/* enable a few interrupts: */
if(lp->mode==1) /* busmaster mode */
{
hp100_outw( HP100_RX_PDL_FILL_COMPL |
HP100_RX_PDA_ZERO |
HP100_RX_ERROR |
/* HP100_RX_PACKET | */
/* HP100_RX_EARLY_INT | */ HP100_SET_HB |
/* HP100_TX_PDA_ZERO | */
HP100_TX_COMPLETE |
/* HP100_MISC_ERROR | */
HP100_TX_ERROR | HP100_SET_LB, IRQ_MASK );
}
else
{
hp100_outw( HP100_RX_PACKET |
HP100_RX_ERROR | HP100_SET_HB |
HP100_TX_ERROR | HP100_SET_LB , IRQ_MASK );
}
/* Enable MAC Tx and RX, set MAC modes, ... */
/* Note: This function also turns on the interrupts. */
hp100_set_multicast_list( dev );
}
static void hp100_stop_interface( struct device *dev )
{
struct hp100_private *lp = (struct hp100_private *)dev->priv;
int ioaddr = dev->base_addr;
u_int val;
#ifdef HP100_DEBUG_B
printk("hp100: %s: hp100_stop_interface\n",dev->name);
hp100_outw( 0x4221, TRACE );
#endif
if (lp->mode==1)
hp100_BM_shutdown( dev );
else
{
/* Note: MMAP_DIS will be reenabled by start_interface */
hp100_outw( HP100_INT_EN | HP100_RESET_LB |
HP100_TRI_INT | HP100_MMAP_DIS | HP100_SET_HB, OPTION_LSW );
val = hp100_inw( OPTION_LSW );
hp100_page( MAC_CTRL );
hp100_andb( ~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1 );
if ( !(val & HP100_HW_RST) ) return; /* If reset, imm. return ... */
/* ... else: busy wait until idle */
for ( val = 0; val < 6000; val++ )
if ( ( hp100_inb( MAC_CFG_1 ) & (HP100_TX_IDLE | HP100_RX_IDLE) ) ==
(HP100_TX_IDLE | HP100_RX_IDLE) )
{
hp100_page(PERFORMANCE);
return;
}
printk( "hp100: %s: hp100_stop_interface - timeout\n", dev->name );
hp100_page(PERFORMANCE);
}
}
static void hp100_load_eeprom( struct device *dev )
{
int i;
int ioaddr = dev->base_addr;
#ifdef HP100_DEBUG_B
hp100_outw( 0x4222, TRACE );
#endif
hp100_page( EEPROM_CTRL );
hp100_andw( ~HP100_EEPROM_LOAD, EEPROM_CTRL );
hp100_orw( HP100_EEPROM_LOAD, EEPROM_CTRL );
for ( i = 0; i < 10000; i++ )
if ( !( hp100_inb( OPTION_MSW ) & HP100_EE_LOAD ) ) return;
printk( "hp100: %s: hp100_load_eeprom - timeout\n", dev->name );
}
/* Sense connection status.
* return values: LAN_10 - Connected to 10Mbit/s network
* LAN_100 - Connected to 100Mbit/s network
* LAN_ERR - not connected or 100Mbit/s Hub down
*/
static int hp100_sense_lan( struct device *dev )
{
int ioaddr = dev->base_addr;
u_short val_VG, val_10;
struct hp100_private *lp = (struct hp100_private *)dev->priv;
#ifdef HP100_DEBUG_B
hp100_outw( 0x4223, TRACE );
#endif
hp100_page( MAC_CTRL );
val_10 = hp100_inb( 10_LAN_CFG_1 );
val_VG = hp100_inb( VG_LAN_CFG_1 );
hp100_page( PERFORMANCE );
#ifdef HP100_DEBUG
printk( "hp100: %s: sense_lan: val_VG = 0x%04x, val_10 = 0x%04x\n", dev->name, val_VG, val_10 );
#endif
if ( val_10 & HP100_LINK_BEAT_ST ) /* 10Mb connection is active */
return HP100_LAN_10;
if ( val_10 & HP100_AUI_ST ) /* have we BNC or AUI onboard? */
{
val_10 |= HP100_AUI_SEL | HP100_LOW_TH;
hp100_page( MAC_CTRL );
hp100_outb( val_10, 10_LAN_CFG_1 );
hp100_page( PERFORMANCE );
return HP100_LAN_10;
}
if ( (lp->id->id == 0x02019F022) ||
(lp->id->id == 0x01042103c) ||
(lp->id->id == 0x01040103c) )
return HP100_LAN_ERR; /* Those cards don't have a 100 Mbit connector */
if ( val_VG & HP100_LINK_CABLE_ST ) /* Can hear the HUBs tone. */
return HP100_LAN_100;
return HP100_LAN_ERR;
}
static int hp100_down_vg_link( struct device *dev )
{
struct hp100_private *lp = (struct hp100_private *)dev->priv;
int ioaddr = dev->base_addr;
unsigned long time;
long savelan, newlan;
#ifdef HP100_DEBUG_B
hp100_outw( 0x4224, TRACE );
printk("hp100: %s: down_vg_link\n", dev->name);
#endif
hp100_page( MAC_CTRL );
time=jiffies+(HZ/4);
do{
if ( hp100_inb( VG_LAN_CFG_1 ) & HP100_LINK_CABLE_ST ) break;
} while (time>jiffies);
if ( jiffies >= time ) /* no signal->no logout */
return 0;
/* Drop the VG Link by clearing the link up cmd and load addr.*/
hp100_andb( ~( HP100_LOAD_ADDR| HP100_LINK_CMD), VG_LAN_CFG_1);
hp100_orb( HP100_VG_SEL, VG_LAN_CFG_1);
/* Conditionally stall for >250ms on Link-Up Status (to go down) */
time=jiffies+(HZ/2);
do{
if ( !(hp100_inb( VG_LAN_CFG_1) & HP100_LINK_UP_ST) ) break;
} while(time>jiffies);
#ifdef HP100_DEBUG
if (jiffies>=time)
printk("hp100: %s: down_vg_link: Link does not go down?\n", dev->name);
#endif
/* To prevent condition where Rev 1 VG MAC and old hubs do not complete */
/* logout under traffic (even though all the status bits are cleared), */
/* do this workaround to get the Rev 1 MAC in its idle state */
if ( lp->chip==HP100_CHIPID_LASSEN )
{
/* Reset VG MAC to insure it leaves the logoff state even if */
/* the Hub is still emitting tones */
hp100_andb(~HP100_VG_RESET, VG_LAN_CFG_1);
udelay(1500); /* wait for >1ms */
hp100_orb(HP100_VG_RESET, VG_LAN_CFG_1); /* Release Reset */
udelay(1500);
}
/* New: For lassen, switch to 10 Mbps mac briefly to clear training ACK */
/* to get the VG mac to full reset. This is not req.d with later chips */
/* Note: It will take the between 1 and 2 seconds for the VG mac to be */
/* selected again! This will be left to the connect hub function to */
/* perform if desired. */
if (lp->chip==HP100_CHIPID_LASSEN)
{
/* Have to write to 10 and 100VG control registers simultaneously */
savelan=newlan=hp100_inl(10_LAN_CFG_1); /* read 10+100 LAN_CFG regs */
newlan &= ~(HP100_VG_SEL<<16);
newlan |= (HP100_DOT3_MAC)<<8;
hp100_andb( ~HP100_AUTO_MODE, MAC_CFG_3); /* Autosel off */
hp100_outl(newlan, 10_LAN_CFG_1);
/* Conditionally stall for 5sec on VG selected. */
time=jiffies+(HZ*5);
do{
if( !(hp100_inb(MAC_CFG_4) & HP100_MAC_SEL_ST) ) break;
} while(time>jiffies);
hp100_orb( HP100_AUTO_MODE, MAC_CFG_3); /* Autosel back on */
hp100_outl(savelan, 10_LAN_CFG_1);
}
time=jiffies+(3*HZ); /* Timeout 3s */
do {
if ( (hp100_inb( VG_LAN_CFG_1 )&HP100_LINK_CABLE_ST) == 0) break;
} while (time>jiffies);
if(time<=jiffies)
{
#ifdef HP100_DEBUG
printk( "hp100: %s: down_vg_link: timeout\n", dev->name );
#endif
return -EIO;
}
time=jiffies+(2*HZ); /* This seems to take a while.... */
do {} while (time>jiffies);
return 0;
}
static int hp100_login_to_vg_hub( struct device *dev, u_short force_relogin )
{
int ioaddr = dev->base_addr;
struct hp100_private *lp = (struct hp100_private *)dev->priv;
u_short val=0;
unsigned long time;
int startst;
#ifdef HP100_DEBUG_B
hp100_outw( 0x4225, TRACE );
printk("hp100: %s: login_to_vg_hub\n", dev->name);
#endif
/* Initiate a login sequence iff VG MAC is enabled and either Load Address
* bit is zero or the force relogin flag is set (e.g. due to MAC address or
* promiscuous mode change)
*/
hp100_page( MAC_CTRL );
startst=hp100_inb( VG_LAN_CFG_1 );
if((force_relogin==TRUE)||(hp100_inb( MAC_CFG_4 )&HP100_MAC_SEL_ST))
{
#ifdef HP100_DEBUG_TRAINING
printk("hp100: %s: Start training\n", dev->name);
#endif
/* Ensure VG Reset bit is 1 (i.e., do not reset)*/
hp100_orb( HP100_VG_RESET , VG_LAN_CFG_1 );
/* If Lassen AND auto-select-mode AND VG tones were sensed on */
/* entry then temporarily put them into force 100Mbit mode */
if((lp->chip==HP100_CHIPID_LASSEN)&&( startst & HP100_LINK_CABLE_ST ) )
hp100_andb( ~HP100_DOT3_MAC, 10_LAN_CFG_2 );
/* Drop the VG link by zeroing Link Up Command and Load Address */
hp100_andb( ~(HP100_LINK_CMD/* |HP100_LOAD_ADDR */), VG_LAN_CFG_1);
#ifdef HP100_DEBUG_TRAINING
printk("hp100: %s: Bring down the link\n", dev->name);
#endif
/* Wait for link to drop */
time = jiffies + (HZ/10);
do {
if (~(hp100_inb( VG_LAN_CFG_1 )& HP100_LINK_UP_ST) ) break;
} while (time>jiffies);
/* Start an addressed training and optionally request promiscuous port */
if ( (dev->flags) & IFF_PROMISC )
{
hp100_orb( HP100_PROM_MODE, VG_LAN_CFG_2);
if(lp->chip==HP100_CHIPID_LASSEN)
hp100_orw( HP100_MACRQ_PROMSC, TRAIN_REQUEST );
}
else
{
hp100_andb( ~HP100_PROM_MODE, VG_LAN_CFG_2);
/* For ETR parts we need to reset the prom. bit in the training
* register, otherwise promiscious mode won't be disabled.
*/
if(lp->chip==HP100_CHIPID_LASSEN)
{
hp100_andw( ~HP100_MACRQ_PROMSC, TRAIN_REQUEST );
}
}
/* With ETR parts, frame format request bits can be set. */
if(lp->chip==HP100_CHIPID_LASSEN)
hp100_orb( HP100_MACRQ_FRAMEFMT_EITHER, TRAIN_REQUEST);
hp100_orb( HP100_LINK_CMD|HP100_LOAD_ADDR|HP100_VG_RESET, VG_LAN_CFG_1);
/* Note: Next wait could be omitted for Hood and earlier chips under */
/* certain circumstances */
/* TODO: check if hood/earlier and skip wait. */
/* Wait for either short timeout for VG tones or long for login */
/* Wait for the card hardware to signalise link cable status ok... */
hp100_page( MAC_CTRL );
time = jiffies + ( 1*HZ ); /* 1 sec timeout for cable st */
do {
if ( hp100_inb( VG_LAN_CFG_1 ) & HP100_LINK_CABLE_ST ) break;
} while ( jiffies < time );
if ( jiffies >= time )
{
#ifdef HP100_DEBUG_TRAINING
printk( "hp100: %s: Link cable status not ok? Training aborted.\n", dev->name );
#endif
}
else
{
#ifdef HP100_DEBUG_TRAINING
printk( "hp100: %s: HUB tones detected. Trying to train.\n", dev->name);
#endif
time = jiffies + ( 2*HZ ); /* again a timeout */
do {
val = hp100_inb( VG_LAN_CFG_1 );
if ( (val & ( HP100_LINK_UP_ST )) )
{
#ifdef HP100_DEBUG_TRAINING
printk( "hp100: %s: Passed training.\n", dev->name);
#endif
break;
}
} while ( time > jiffies );
}
/* If LINK_UP_ST is set, then we are logged into the hub. */
if ( (jiffies<=time) && (val & HP100_LINK_UP_ST) )
{
#ifdef HP100_DEBUG_TRAINING
printk( "hp100: %s: Successfully logged into the HUB.\n", dev->name);
if(lp->chip==HP100_CHIPID_LASSEN)
{
val = hp100_inw(TRAIN_ALLOW);
printk( "hp100: %s: Card supports 100VG MAC Version \"%s\" ",
dev->name,(hp100_inw(TRAIN_REQUEST)&HP100_CARD_MACVER) ? "802.12" : "Pre");
printk( "Driver will use MAC Version \"%s\"\n",
( val & HP100_HUB_MACVER) ? "802.12" : "Pre" );
printk( "hp100: %s: Frame format is %s.\n",dev->name,(val&HP100_MALLOW_FRAMEFMT)?"802.5":"802.3");
}
#endif
}
else
{
/* If LINK_UP_ST is not set, login was not successful */
printk("hp100: %s: Problem logging into the HUB.\n",dev->name);
if(lp->chip==HP100_CHIPID_LASSEN)
{
/* Check allowed Register to find out why there is a problem. */
val = hp100_inw( TRAIN_ALLOW ); /* wont work on non-ETR card */
#ifdef HP100_DEBUG_TRAINING
printk("hp100: %s: MAC Configuration requested: 0x%04x, HUB allowed: 0x%04x\n", dev->name, hp100_inw(TRAIN_REQUEST), val);
#endif
if ( val & HP100_MALLOW_ACCDENIED )
printk("hp100: %s: HUB access denied.\n", dev->name);
if ( val & HP100_MALLOW_CONFIGURE )
printk("hp100: %s: MAC Configuration is incompatible with the Network.\n", dev->name);
if ( val & HP100_MALLOW_DUPADDR )
printk("hp100: %s: Duplicate MAC Address on the Network.\n", dev->name);
}
}
/* If we have put the chip into forced 100 Mbit mode earlier, go back */
/* to auto-select mode */
if( (lp->chip==HP100_CHIPID_LASSEN)&&(startst & HP100_LINK_CABLE_ST) )
{
hp100_page( MAC_CTRL );
hp100_orb( HP100_DOT3_MAC, 10_LAN_CFG_2 );
}
val=hp100_inb(VG_LAN_CFG_1);
/* Clear the MISC_ERROR Interrupt, which might be generated when doing the relogin */
hp100_page(PERFORMANCE);
hp100_outw( HP100_MISC_ERROR, IRQ_STATUS);
if (val&HP100_LINK_UP_ST)
return(0); /* login was ok */
else
{
printk("hp100: %s: Training failed.\n", dev->name);
hp100_down_vg_link( dev );
return -EIO;
}
}
/* no forced relogin & already link there->no training. */
return -EIO;
}
static void hp100_cascade_reset( struct device *dev, u_short enable )
{
int ioaddr = dev->base_addr;
struct hp100_private *lp = (struct hp100_private *)dev->priv;
int i;
#ifdef HP100_DEBUG_B
hp100_outw( 0x4226, TRACE );
printk("hp100: %s: cascade_reset\n", dev->name);
#endif
if (enable==TRUE)
{
hp100_outw( HP100_HW_RST | HP100_RESET_LB, OPTION_LSW );
if(lp->chip==HP100_CHIPID_LASSEN)
{
/* Lassen requires a PCI transmit fifo reset */
hp100_page( HW_MAP );
hp100_andb( ~HP100_PCI_RESET, PCICTRL2 );
hp100_orb( HP100_PCI_RESET, PCICTRL2 );
/* Wait for min. 300 ns */
/* we cant use jiffies here, because it may be */
/* that we have disabled the timer... */
for (i=0; i<0xffff; i++);
hp100_andb( ~HP100_PCI_RESET, PCICTRL2 );
hp100_page( PERFORMANCE );
}
}
else
{ /* bring out of reset */
hp100_outw(HP100_HW_RST|HP100_SET_LB, OPTION_LSW);
for (i=0; i<0xffff; i++ );
hp100_page(PERFORMANCE);
}
}
#ifdef HP100_DEBUG
void hp100_RegisterDump( struct device *dev )
{
int ioaddr=dev->base_addr;
int Page;
int Register;
/* Dump common registers */
printk("hp100: %s: Cascade Register Dump\n", dev->name);
printk("hardware id #1: 0x%.2x\n",hp100_inb(HW_ID));
printk("hardware id #2/paging: 0x%.2x\n",hp100_inb(PAGING));
printk("option #1: 0x%.4x\n",hp100_inw(OPTION_LSW));
printk("option #2: 0x%.4x\n",hp100_inw(OPTION_MSW));
/* Dump paged registers */
for (Page = 0; Page < 8; Page++)
{
/* Dump registers */
printk("page: 0x%.2x\n",Page);
outw( Page, ioaddr+0x02);
for (Register = 0x8; Register < 0x22; Register += 2)
{
/* Display Register contents except data port */
if (((Register != 0x10) && (Register != 0x12)) || (Page > 0))
{
printk("0x%.2x = 0x%.4x\n",Register,inw(ioaddr+Register));
}
}
}
hp100_page(PERFORMANCE);
}
#endif
/*
* module section
*/
#ifdef MODULE
/* Parameters set by insmod */
int hp100_port[5] = { 0, -1, -1, -1, -1 };
#ifdef LINUX_2_1
MODULE_PARM(hp100_port, "1-5i");
#endif
#ifdef LINUX_2_1
char hp100_name[5][IFNAMSIZ] = { "", "", "", "", "" };
MODULE_PARM(hp100_name, "1-5c" __MODULE_STRING(IFNAMSIZ));
#else
static char devname[5][IFNAMSIZ] = { "", "", "", "", "" };
static char *hp100_name[5] = { devname[0], devname[1],
devname[2], devname[3],
devname[4] };
#endif
/* List of devices */
static struct device *hp100_devlist[5] = { NULL, NULL, NULL, NULL, NULL };
/*
* Note: if you have more than five 100vg cards in your pc, feel free to
* increase this value
*/
/*
* Note: to register three eisa or pci devices, use:
* option hp100 hp100_port=0,0,0
* to register one card at io 0x280 as eth239, use:
* option hp100 hp100_port=0x280 hp100_name=eth239
*/
int init_module( void )
{
int i;
int ret = 0;
if (hp100_port == 0 && !EISA_bus && !pcibios_present())
printk("hp100: You should not use auto-probing with insmod!\n");
/* Loop on all possible base addresses */
i = -1;
while((hp100_port[++i] != -1) && (i < 5))
{
/* Create device and set basics args */
hp100_devlist[i] = kmalloc(sizeof(struct device), GFP_KERNEL);
memset(hp100_devlist[i], 0x00, sizeof(struct device));
hp100_devlist[i]->name = hp100_name[i];
hp100_devlist[i]->base_addr = hp100_port[i];
hp100_devlist[i]->init = &hp100_probe;
/* Try to create the device */
if(register_netdev(hp100_devlist[i]) != 0)
{
/* DeAllocate everything */
/* Note: if dev->priv is mallocated, there is no way to fail */
kfree_s(hp100_devlist[i], sizeof(struct device));
hp100_devlist[i] = (struct device *) NULL;
ret = -EIO;
}
} /* Loop over all devices */
return ret;
}
void cleanup_module( void )
{
int i;
/* TODO: Check if all skb's are released/freed. */
for(i = 0; i < 5; i++)
if(hp100_devlist[i] != (struct device *) NULL)
{
unregister_netdev( hp100_devlist[i] );
release_region( hp100_devlist[i]->base_addr, HP100_REGION_SIZE );
if( ((struct hp100_private *)hp100_devlist[i]->priv)->mode==1 ) /* busmaster */
kfree_s( ((struct hp100_private *)hp100_devlist[i]->priv)->page_vaddr, MAX_RINGSIZE+0x0f);
if ( ((struct hp100_private *)hp100_devlist[i]->priv) -> mem_ptr_virt )
iounmap( ((struct hp100_private *)hp100_devlist[i]->priv) -> mem_ptr_virt );
kfree_s( hp100_devlist[i]->priv, sizeof( struct hp100_private ) );
hp100_devlist[i]->priv = NULL;
kfree_s(hp100_devlist[i], sizeof(struct device));
hp100_devlist[i] = (struct device *) NULL;
}
}
#endif /* MODULE */
/*
* Local variables:
* compile-command: "gcc -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -m486 -c hp100.c"
* c-indent-level: 2
* tab-width: 8
* End:
*/
