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/*
** hp100.c
** HP CASCADE Architecture Driver for 100VG-AnyLan Network Adapters
**
** $Id: hp100.c,v 1.58 2001/09/24 18:03:01 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@suse.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
** -- Compex FreedomLine 100/VG 10/100 Mbit/s ISA / EISA / PCI
**
** 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.
** - some updates for EISA version of card
**
**
** This code is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** This code is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
**
** 1.57c -> 1.58
** - used indent to change coding-style
** - added KTI DP-200 EISA ID
** - ioremap is also used for low (<1MB) memory (multi-architecture support)
**
** 1.57b -> 1.57c - Arnaldo Carvalho de Melo <acme@conectiva.com.br>
** - release resources on failure in init_module
**
** 1.57 -> 1.57b - Jean II
** - fix spinlocks, SMP is now working !
**
** 1.56 -> 1.57
** - updates for new PCI interface for 2.1 kernels
**
** 1.55 -> 1.56
** - removed printk in misc. interrupt and update statistics to allow
** monitoring of card status
** - timing changes in xmit routines, relogin to 100VG hub added when
** driver does reset
** - included fix for Compex FreedomLine PCI adapter
**
** 1.54 -> 1.55
** - fixed bad initialization in init_module
** - added Compex FreedomLine adapter
** - some fixes in card initialization
**
** 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/slab.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/spinlock.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>
#include <linux/init.h>
#define LINUX_2_1
typedef struct net_device_stats hp100_stats_t;
EXPORT_NO_SYMBOLS;
#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
#ifndef PCI_VENDOR_ID_COMPEX2
#define PCI_VENDOR_ID_COMPEX2 0x101a
#endif
#ifndef PCI_DEVICE_ID_COMPEX2_100VG
#define PCI_DEVICE_ID_COMPEX2_100VG 0x0005
#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_pci_id {
u_short vendor;
u_short device;
};
struct hp100_private {
struct hp100_eisa_id *id;
spinlock_t lock;
u_short chip;
u_short soft_model;
u_int memory_size;
u_int virt_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;
struct pci_dev *pci_dev;
short mem_mapped; /* memory mapped access */
void *mem_ptr_virt; /* virtual memory mapped area, maybe NULL */
unsigned long 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 EISA card from Compex - FreedomLine (sq5bpf) */
/* Note: plhbrod@mbox.vol.cz reported that same ID have ISA */
/* version of adapter, too... */
{0x0104180e, "FreedomLine 100/VG", HP100_BUS_EISA},
/* 10/100 PCI card from Compex - FreedomLine
*
* I think this card doesn't like aic7178 scsi controller, but
* I haven't tested this much. It works fine on diskless machines.
* Jacek Lipkowski <sq5bpf@acid.ch.pw.edu.pl>
*/
{0x021211f6, "FreedomLine 100/VG", HP100_BUS_PCI},
/* 10/100 PCI card from Compex (J2585A compatible) */
{0x011211f6, "ReadyLink ENET100-VG4", HP100_BUS_PCI},
/* 10/100 PCI card from KTI */
{0x40008e2e, "KTI DP-200", HP100_BUS_PCI }
};
#define HP100_EISA_IDS_SIZE (sizeof(hp100_eisa_ids)/sizeof(struct hp100_eisa_id))
#ifdef CONFIG_PCI
static struct hp100_pci_id hp100_pci_ids[] = {
{PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585A},
{PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585B},
{PCI_VENDOR_ID_COMPEX, PCI_DEVICE_ID_COMPEX_ENET100VG4},
{PCI_VENDOR_ID_COMPEX2, PCI_DEVICE_ID_COMPEX2_100VG}
};
#endif
#define HP100_PCI_IDS_SIZE (sizeof(hp100_pci_ids)/sizeof(struct hp100_pci_id))
#if LINUX_VERSION_CODE >= 0x20400
static struct pci_device_id hp100_pci_tbl[] __initdata = {
{PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585A, PCI_ANY_ID, PCI_ANY_ID,},
{PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585B, PCI_ANY_ID, PCI_ANY_ID,},
{PCI_VENDOR_ID_COMPEX, PCI_DEVICE_ID_COMPEX_ENET100VG4, PCI_ANY_ID, PCI_ANY_ID,},
{PCI_VENDOR_ID_COMPEX2, PCI_DEVICE_ID_COMPEX2_100VG, PCI_ANY_ID, PCI_ANY_ID,},
{} /* Terminating entry */
};
MODULE_DEVICE_TABLE(pci, hp100_pci_tbl);
#endif /* LINUX_VERSION_CODE >= 0x20400 */
static int hp100_rx_ratio = HP100_DEFAULT_RX_RATIO;
static int hp100_priority_tx = HP100_DEFAULT_PRIORITY_TX;
static int hp100_mode = 1;
MODULE_PARM(hp100_rx_ratio, "1i");
MODULE_PARM(hp100_priority_tx, "1i");
MODULE_PARM(hp100_mode, "1i");
/*
* prototypes
*/
static int hp100_probe1(struct net_device *dev, int ioaddr, u_char bus,
struct pci_dev *pci_dev);
static int hp100_open(struct net_device *dev);
static int hp100_close(struct net_device *dev);
static int hp100_start_xmit(struct sk_buff *skb, struct net_device *dev);
static int hp100_start_xmit_bm(struct sk_buff *skb,
struct net_device *dev);
static void hp100_rx(struct net_device *dev);
static hp100_stats_t *hp100_get_stats(struct net_device *dev);
static void hp100_misc_interrupt(struct net_device *dev);
static void hp100_update_stats(struct net_device *dev);
static void hp100_clear_stats(struct hp100_private *lp, int ioaddr);
static void hp100_set_multicast_list(struct net_device *dev);
static void hp100_interrupt(int irq, void *dev_id, struct pt_regs *regs);
static void hp100_start_interface(struct net_device *dev);
static void hp100_stop_interface(struct net_device *dev);
static void hp100_load_eeprom(struct net_device *dev, u_short ioaddr);
static int hp100_sense_lan(struct net_device *dev);
static int hp100_login_to_vg_hub(struct net_device *dev,
u_short force_relogin);
static int hp100_down_vg_link(struct net_device *dev);
static void hp100_cascade_reset(struct net_device *dev, u_short enable);
static void hp100_BM_shutdown(struct net_device *dev);
static void hp100_mmuinit(struct net_device *dev);
static void hp100_init_pdls(struct net_device *dev);
static int hp100_init_rxpdl(struct net_device *dev,
register hp100_ring_t * ringptr,
register u_int * pdlptr);
static int hp100_init_txpdl(struct net_device *dev,
register hp100_ring_t * ringptr,
register u_int * pdlptr);
static void hp100_rxfill(struct net_device *dev);
static void hp100_hwinit(struct net_device *dev);
static void hp100_clean_txring(struct net_device *dev);
#ifdef HP100_DEBUG
static void hp100_RegisterDump(struct net_device *dev);
#endif
/* TODO: This function should not really be needed in a good design... */
static void wait(void)
{
mdelay(1);
}
/*
* probe functions
* These functions should - if possible - avoid doing write operations
* since this could cause problems when the card is not installed.
*/
int __init hp100_probe(struct net_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,
NULL);
if (EISA_bus && base_addr >= 0x1c38 && ((base_addr - 0x1c38) & 0x3ff) == 0)
return hp100_probe1(dev, base_addr, HP100_BUS_EISA, NULL);
#ifdef CONFIG_PCI
printk("hp100: %s: You must specify card # in i/o address parameter for PCI bus...", dev->name);
#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;
/* First: scan PCI bus(es) */
#ifdef CONFIG_PCI
if (pcibios_present()) {
int pci_index;
struct pci_dev *pci_dev = NULL;
int pci_id_index;
u_short pci_command;
#ifdef HP100_DEBUG_PCI
printk("hp100: %s: PCI BIOS is present, checking for devices..\n", dev->name);
#endif
pci_index = 0;
for (pci_id_index = 0; pci_id_index < HP100_PCI_IDS_SIZE;
pci_id_index++) {
while ((pci_dev = pci_find_device(hp100_pci_ids[pci_id_index].vendor,
hp100_pci_ids[pci_id_index].device,
pci_dev)) != NULL) {
if (pci_index < (pci_start_index & 7)) {
pci_index++;
continue;
}
if (pci_enable_device(pci_dev))
continue;
/* found... */
ioaddr = pci_resource_start(pci_dev, 0);
if (check_region(ioaddr, HP100_REGION_SIZE))
continue;
pci_read_config_word(pci_dev, PCI_COMMAND, &pci_command);
if (!(pci_command & PCI_COMMAND_IO)) {
#ifdef HP100_DEBUG
printk("hp100: %s: PCI I/O Bit has not been set. Setting...\n", dev->name);
#endif
pci_command |= PCI_COMMAND_IO;
pci_write_config_word(pci_dev, 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;
pci_write_config_word(pci_dev, 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_dev) == 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, NULL) == 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, NULL) == 0)
return 0;
}
return -ENODEV;
}
static int __init hp100_probe1(struct net_device *dev, int ioaddr,
u_char bus, struct pci_dev *pci_dev)
{
int i;
u_char uc, uc_1;
u_int eisa_id;
u_int chip;
u_int memory_size = 0, virt_memory_size = 0;
u_short local_mode, lsw;
short mem_mapped;
unsigned long mem_ptr_phys;
void **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 < HP100_EISA_IDS_SIZE; i++)
if (hp100_eisa_ids[i].id == eisa_id)
break;
if (i >= HP100_EISA_IDS_SIZE) {
for (i = 0; i < HP100_EISA_IDS_SIZE; i++)
if ((hp100_eisa_ids[i].id & 0xf0ffffff) == (eisa_id & 0xf0ffffff))
break;
if (i >= HP100_EISA_IDS_SIZE) {
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;
}
/* Make sure, that all registers are correctly updated... */
hp100_load_eeprom(dev, ioaddr);
wait();
/*
* 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.
*/
/*
* LSW values:
* 0x2278 -> J2585B, PnP shared memory mode
* 0x2270 -> J2585B, shared memory mode, 0xdc000
* 0xa23c -> J2585B, I/O mapped mode
* 0x2240 -> EISA COMPEX, BusMaster (Shasta Chip)
* 0x2220 -> EISA HP, I/O (Shasta Chip)
* 0x2260 -> EISA HP, BusMaster (Shasta Chip)
*/
#if 0
local_mode = 0x2270;
hp100_outw(0xfefe, OPTION_LSW);
hp100_outw(local_mode | HP100_SET_LB | HP100_SET_HB, OPTION_LSW);
#endif
/* 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.\n", dev->name);
printk("hp100: %s: 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 = 0UL;
mem_ptr_virt = NULL;
memory_size = (8192 << ((hp100_inb(SRAM) >> 5) & 0x07));
virt_memory_size = 0;
/* For memory mapped or busmaster mode, we want the memory address */
if (mem_mapped || (local_mode == 1)) {
mem_ptr_phys = (hp100_inw(MEM_MAP_LSW) | (hp100_inw(MEM_MAP_MSW) << 16));
mem_ptr_phys &= ~0x1fff; /* 8k alignment */
if (bus == HP100_BUS_ISA && (mem_ptr_phys & ~0xfffff) != 0) {
printk("hp100: %s: Can only use programmed i/o mode.\n", dev->name);
mem_ptr_phys = 0;
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 */
/* We try with smaller memory sizes, if ioremap fails */
for (virt_memory_size = memory_size; virt_memory_size > 16383; virt_memory_size >>= 1) {
if ((mem_ptr_virt = ioremap((u_long) mem_ptr_phys, virt_memory_size)) == NULL) {
#ifdef HP100_DEBUG
printk("hp100: %s: ioremap for 0x%x bytes high PCI memory at 0x%lx failed\n", dev->name, virt_memory_size, mem_ptr_phys);
#endif
} else {
#ifdef HP100_DEBUG
printk("hp100: %s: remapped 0x%x bytes high PCI memory at 0x%lx to %p.\n", dev->name, virt_memory_size, mem_ptr_phys, 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;
virt_memory_size = 0;
}
}
}
if (local_mode == 3) { /* io mapped forced */
mem_mapped = 0;
mem_ptr_phys = 0;
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;
lp = (struct hp100_private *) dev->priv;
memset(lp, 0, sizeof(struct hp100_private));
spin_lock_init(&lp->lock);
lp->id = eid;
lp->chip = chip;
lp->mode = local_mode;
lp->bus = bus;
lp->pci_dev = pci_dev;
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->virt_memory_size = virt_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 */
if (bus == HP100_BUS_PCI) {
dev->irq = pci_dev->irq;
} else {
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(lp, ioaddr);
SET_MODULE_OWNER(dev);
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, mem_ptr_phys,
(mem_ptr_phys + (mem_ptr_phys > 0x100000 ? (u_long) lp->memory_size : 16 * 1024)) - 1);
if (mem_ptr_virt)
printk(" (virtual base %p)", mem_ptr_virt);
printk(".\n");
/* Set for info when doing ifconfig */
dev->mem_start = mem_ptr_phys;
dev->mem_end = mem_ptr_phys + 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 net_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, 0);
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 net_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 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 net_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;
}
dev->trans_start = jiffies;
netif_start_queue(dev);
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 net_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);
netif_stop_queue(dev);
free_irq(dev->irq, dev);
#ifdef HP100_DEBUG
printk("hp100: %s: close LSW = 0x%x\n", dev->name,
hp100_inw(OPTION_LSW));
#endif
return 0;
}
/*
* Configure the PDL Rx rings and LAN
*/
static void hp100_init_pdls(struct net_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 net_device *dev,
register hp100_ring_t * ringptr,
register u32 * pdlptr)
{
/* pdlptr is starting address 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 net_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
*/
static int hp100_build_rx_pdl(hp100_ring_t * ringptr,
struct net_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 net_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 net_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 net_device *dev)
{
unsigned long flags;
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) {
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)
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 {
spin_lock_irqsave(&lp->lock, flags);
hp100_ints_off(); /* Useful ? Jean II */
i = hp100_sense_lan(dev);
hp100_ints_on();
spin_unlock_irqrestore(&lp->lock, flags);
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);
if (lp->lan_type == HP100_LAN_100)
lp->hub_status = hp100_login_to_vg_hub(dev, FALSE);
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
*/
spin_lock_irqsave(&lp->lock, flags);
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++;
spin_unlock_irqrestore(&lp->lock, flags);
/* Update statistics */
lp->stats.tx_packets++;
lp->stats.tx_bytes += skb->len;
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 net_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_any(lp->txrhead->skb);
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 net_device *dev)
{
unsigned long flags;
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 (skb == NULL) {
return 0;
}
if (skb->len <= 0)
return 0;
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) {
#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 {
spin_lock_irqsave(&lp->lock, flags);
hp100_ints_off(); /* Useful ? Jean II */
i = hp100_sense_lan(dev);
hp100_ints_on();
spin_unlock_irqrestore(&lp->lock, flags);
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);
if (lp->lan_type == HP100_LAN_100)
lp->hub_status = hp100_login_to_vg_hub(dev, FALSE);
hp100_start_interface(dev);
mdelay(1);
}
}
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
}
spin_lock_irqsave(&lp->lock, flags);
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_toio(lp->mem_ptr_virt, skb->data, (skb->len + 3) & ~3);
if (!ok_flag)
memset_io(lp->mem_ptr_virt, 0, HP100_MIN_PACKET_SIZE - skb->len);
} else {
/* Note: The J2585B needs alignment to 32bits here! */
isa_memcpy_toio(lp->mem_ptr_phys, skb->data, (skb->len + 3) & ~3);
if (!ok_flag)
isa_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++;
lp->stats.tx_bytes += skb->len;
dev->trans_start = jiffies;
hp100_ints_on();
spin_unlock_irqrestore(&lp->lock, flags);
dev_kfree_skb_any(skb);
#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 net_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 transferred 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 = readl(lp->mem_ptr_virt);
else
header = isa_readl(lp->mem_ptr_phys);
} else /* programmed i/o */
header = hp100_inl(DATA32);
pkt_len = ((header & HP100_PKT_LEN_MASK) + 3) & ~3;
#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. */
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_fromio(ptr, lp->mem_ptr_virt,pkt_len);
/* Note alignment to 32bit transfers */
else
isa_memcpy_fromio(ptr, lp->mem_ptr_phys, pkt_len);
} else /* io mapped */
insl(ioaddr + HP100_REG_DATA32, ptr, pkt_len >> 2);
skb->protocol = eth_type_trans(skb, dev);
#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
netif_rx(skb);
dev->last_rx = jiffies;
lp->stats.rx_packets++;
lp->stats.rx_bytes += pkt_len;
}
/* 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 net_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... */
dev->last_rx = jiffies;
lp->stats.rx_packets++;
lp->stats.rx_bytes += pkt_len;
}
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_any(ptr->skb);
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 net_device *dev)
{
unsigned long flags;
int ioaddr = dev->base_addr;
struct hp100_private *lp = (struct hp100_private *) dev->priv;
#ifdef HP100_DEBUG_B
hp100_outw(0x4215, TRACE);
#endif
spin_lock_irqsave(&lp->lock, flags);
hp100_ints_off(); /* Useful ? Jean II */
hp100_update_stats(dev);
hp100_ints_on();
spin_unlock_irqrestore(&lp->lock, flags);
return &(lp->stats);
}
static void hp100_update_stats(struct net_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_misc_interrupt(struct net_device *dev)
{
struct hp100_private *lp = (struct hp100_private *) dev->priv;
#ifdef HP100_DEBUG_B
hp100_outw(0x4216, TRACE);
printk("hp100: %s: misc_interrupt\n", dev->name);
#endif
/* Note: Statistics counters clear when read. */
lp->stats.rx_errors++;
lp->stats.tx_errors++;
}
static void hp100_clear_stats(struct hp100_private *lp, int ioaddr)
{
unsigned long flags;
#ifdef HP100_DEBUG_B
hp100_outw(0x4217, TRACE);
printk("hp100: %s: clear_stats\n", dev->name);
#endif
spin_lock_irqsave(&lp->lock, flags);
hp100_page(MAC_CTRL); /* get all statistics bytes */
hp100_inw(DROPPED);
hp100_inb(CRC);
hp100_inb(ABORT);
hp100_page(PERFORMANCE);
spin_unlock_irqrestore(&lp->lock, flags);
}
/*
* multicast setup
*/
/*
* Set or clear the multicast filter for this adapter.
*/
static void hp100_set_multicast_list(struct net_device *dev)
{
unsigned long flags;
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
spin_lock_irqsave(&lp->lock, flags);
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();
spin_unlock_irqrestore(&lp->lock, flags);
}
/*
* hardware interrupt handling
*/
static void hp100_interrupt(int irq, void *dev_id, struct pt_regs *regs)
{
struct net_device *dev = (struct net_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;
spin_lock(&lp->lock);
hp100_ints_off();
#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 */
spin_unlock(&lp->lock);
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 */
#ifdef HP100_DEBUG_IRQ
printk
("hp100: %s: Misc. Error Interrupt - Check cabling.\n",
dev->name);
#endif
if (lp->mode == 1) {
hp100_clean_txring(dev);
hp100_rxfill(dev);
}
hp100_misc_interrupt(dev);
}
spin_unlock(&lp->lock);
hp100_ints_on();
}
/*
* some misc functions
*/
static void hp100_start_interface(struct net_device *dev)
{
unsigned long flags;
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
spin_lock_irqsave(&lp->lock, flags);
/* 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);
}
/* Note : before hp100_set_multicast_list(), because it will play with
* spinlock itself... Jean II */
spin_unlock_irqrestore(&lp->lock, flags);
/* Enable MAC Tx and RX, set MAC modes, ... */
hp100_set_multicast_list(dev);
}
static void hp100_stop_interface(struct net_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 net_device *dev, u_short probe_ioaddr)
{
int i;
int ioaddr = probe_ioaddr > 0 ? probe_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 net_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 net_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;
if (!in_interrupt()) {
set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout(1);
}
} while (time_after(time, jiffies));
if (time_after_eq(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;
if (!in_interrupt()) {
set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout(1);
}
} while (time_after(time, jiffies));
#ifdef HP100_DEBUG
if (time_after_eq(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;
if (!in_interrupt()) {
set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout(1);
}
} while (time_after(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;
if (!in_interrupt()) {
set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout(1);
}
} while (time_after(time, jiffies));
if (time_before_eq(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 {
if (!in_interrupt()) {
set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout(1);
}
} while (time_after(time, jiffies));
return 0;
}
static int hp100_login_to_vg_hub(struct net_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;
if (!in_interrupt()) {
set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout(1);
}
} while (time_after(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;
if (!in_interrupt()) {
set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout(1);
}
} while (time_before(jiffies, time));
if (time_after_eq(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;
}
if (!in_interrupt()) {
set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout(1);
}
} while (time_after(time, jiffies));
}
/* If LINK_UP_ST is set, then we are logged into the hub. */
if (time_before_eq(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 net_device *dev, u_short enable)
{
int ioaddr = dev->base_addr;
struct hp100_private *lp = (struct hp100_private *) dev->priv;
#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... */
udelay(400);
hp100_andb(~HP100_PCI_RESET, PCICTRL2);
hp100_page(PERFORMANCE);
}
} else { /* bring out of reset */
hp100_outw(HP100_HW_RST | HP100_SET_LB, OPTION_LSW);
udelay(400);
hp100_page(PERFORMANCE);
}
}
#ifdef HP100_DEBUG
void hp100_RegisterDump(struct net_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
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>, "
"Siegfried \"Frieder\" Loeffler (dg1sek) <floeff@mathematik.uni-stuttgart.de>");
MODULE_DESCRIPTION("HP CASCADE Architecture Driver for 100VG-AnyLan Network Adapters");
/*
* Note: if you have more than five 100vg cards in your pc, feel free to
* increase this value
*/
#define HP100_DEVICES 5
/*
* 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
*/
/* Parameters set by insmod */
static int hp100_port[HP100_DEVICES] = { 0, [1 ... (HP100_DEVICES-1)] = -1 };
MODULE_PARM(hp100_port, "1-" __MODULE_STRING(HP100_DEVICES) "i");
/* Allocate HP100_DEVICES strings of length IFNAMSIZ, one string for each device */
static char hp100_name[HP100_DEVICES][IFNAMSIZ] = { "", "", "", "", "" };
/* Allow insmod to write those HP100_DEVICES strings individually */
MODULE_PARM(hp100_name, "1-" __MODULE_STRING(HP100_DEVICES) "c" __MODULE_STRING(IFNAMSIZ));
/* List of devices */
static struct net_device *hp100_devlist[HP100_DEVICES];
static void release_dev(int i)
{
struct net_device *d = hp100_devlist[i];
struct hp100_private *p = (struct hp100_private *) d->priv;
unregister_netdev(d);
release_region(d->base_addr, HP100_REGION_SIZE);
if (p->mode == 1) /* busmaster */
kfree(p->page_vaddr);
if (p->mem_ptr_virt)
iounmap(p->mem_ptr_virt);
kfree(d->priv);
d->priv = NULL;
kfree(d);
hp100_devlist[i] = NULL;
}
static int __init hp100_module_init(void)
{
int i, cards;
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;
cards = 0;
while ((hp100_port[++i] != -1) && (i < HP100_DEVICES)) {
/* Create device and set basics args */
hp100_devlist[i] = kmalloc(sizeof(struct net_device), GFP_KERNEL);
if (!hp100_devlist[i])
goto fail;
memset(hp100_devlist[i], 0x00, sizeof(struct net_device));
#if LINUX_VERSION_CODE >= 0x020362 /* 2.3.99-pre7 */
memcpy(hp100_devlist[i]->name, hp100_name[i], IFNAMSIZ); /* Copy name */
#else
hp100_devlist[i]->name = hp100_name[i];
#endif /* LINUX_VERSION_CODE >= 0x020362 */
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(hp100_devlist[i]);
hp100_devlist[i] = (struct net_device *) NULL;
} else
cards++;
} /* Loop over all devices */
return cards > 0 ? 0 : -ENODEV;
fail:
while (cards && --i)
if (hp100_devlist[i]) {
release_dev(i);
--cards;
}
return -ENOMEM;
}
static void __exit hp100_module_exit(void)
{
int i;
/* TODO: Check if all skb's are released/freed. */
for (i = 0; i < HP100_DEVICES; i++)
if (hp100_devlist[i] != (struct net_device *) NULL)
release_dev(i);
}
module_init(hp100_module_init)
module_exit(hp100_module_exit)
#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:
*/
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