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hp100.c
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hp100.c
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// SPDX-License-Identifier: GPL-2.0-or-later
/*
** 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@perex.cz>
**
** This driver has only been tested with
** -- HP J2585B 10/100 Mbit/s PCI Busmaster
** -- HP J2585A 10/100 Mbit/s PCI
** -- HP J2970A 10 Mbit/s PCI Combo 10base-T/BNC
** -- HP J2973A 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
**
**
**
** 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/module.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/ioport.h>
#include <linux/interrupt.h>
#include <linux/eisa.h>
#include <linux/pci.h>
#include <linux/dma-mapping.h>
#include <linux/spinlock.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/types.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/bitops.h>
#include <linux/jiffies.h>
#include <asm/io.h>
#include "hp100.h"
/*
* defines
*/
#define HP100_BUS_ISA 0
#define HP100_BUS_EISA 1
#define HP100_BUS_PCI 2
#define HP100_REGION_SIZE 0x20 /* for ioports */
#define HP100_SIG_LEN 8 /* same as EISA_SIG_LEN */
#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_private {
spinlock_t lock;
char id[HP100_SIG_LEN];
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 __iomem *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];
/* 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_algn; /* Aligned virtual address of allocated page */
u_long whatever_offset; /* Offset to bus/phys/dma address */
int rxrcommit; /* # Rx PDLs committed to adapter */
int txrcommit; /* # Tx PDLs committed to adapter */
};
/*
* variables
*/
#ifdef CONFIG_ISA
static const char *hp100_isa_tbl[] = {
"HWPF150", /* HP J2573 rev A */
"HWP1950", /* HP J2573 */
};
#endif
static const struct eisa_device_id hp100_eisa_tbl[] = {
{ "HWPF180" }, /* HP J2577 rev A */
{ "HWP1920" }, /* HP 27248B */
{ "HWP1940" }, /* HP J2577 */
{ "HWP1990" }, /* HP J2577 */
{ "CPX0301" }, /* ReadyLink ENET100-VG4 */
{ "CPX0401" }, /* FreedomLine 100/VG */
{ "" } /* Mandatory final entry ! */
};
MODULE_DEVICE_TABLE(eisa, hp100_eisa_tbl);
static const struct pci_device_id hp100_pci_tbl[] = {
{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_HP, PCI_DEVICE_ID_HP_J2970A, PCI_ANY_ID, PCI_ANY_ID,},
{PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2973A, 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,},
/* {PCI_VENDOR_ID_KTI, PCI_DEVICE_ID_KTI_DP200, PCI_ANY_ID, PCI_ANY_ID }, */
{} /* Terminating entry */
};
MODULE_DEVICE_TABLE(pci, hp100_pci_tbl);
static int hp100_rx_ratio = HP100_DEFAULT_RX_RATIO;
static int hp100_priority_tx = HP100_DEFAULT_PRIORITY_TX;
static int hp100_mode = 1;
module_param(hp100_rx_ratio, int, 0);
module_param(hp100_priority_tx, int, 0);
module_param(hp100_mode, int, 0);
/*
* 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 netdev_tx_t hp100_start_xmit(struct sk_buff *skb,
struct net_device *dev);
static netdev_tx_t hp100_start_xmit_bm(struct sk_buff *skb,
struct net_device *dev);
static void hp100_rx(struct net_device *dev);
static struct net_device_stats *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 irqreturn_t hp100_interrupt(int irq, void *dev_id);
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
/* Conversion to new PCI API :
* Convert an address in a kernel buffer to a bus/phys/dma address.
* This work *only* for memory fragments part of lp->page_vaddr,
* because it was properly DMA allocated via pci_alloc_consistent(),
* so we just need to "retrieve" the original mapping to bus/phys/dma
* address - Jean II */
static inline dma_addr_t virt_to_whatever(struct net_device *dev, u32 * ptr)
{
struct hp100_private *lp = netdev_priv(dev);
return ((u_long) ptr) + lp->whatever_offset;
}
static inline u_int pdl_map_data(struct hp100_private *lp, void *data)
{
return pci_map_single(lp->pci_dev, data,
MAX_ETHER_SIZE, PCI_DMA_FROMDEVICE);
}
/* 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.
*/
/*
* Read board id and convert to string.
* Effectively same code as decode_eisa_sig
*/
static const char *hp100_read_id(int ioaddr)
{
int i;
static char str[HP100_SIG_LEN];
unsigned char sig[4], sum;
unsigned short rev;
hp100_page(ID_MAC_ADDR);
sum = 0;
for (i = 0; i < 4; i++) {
sig[i] = hp100_inb(BOARD_ID + i);
sum += sig[i];
}
sum += hp100_inb(BOARD_ID + i);
if (sum != 0xff)
return NULL; /* bad checksum */
str[0] = ((sig[0] >> 2) & 0x1f) + ('A' - 1);
str[1] = (((sig[0] & 3) << 3) | (sig[1] >> 5)) + ('A' - 1);
str[2] = (sig[1] & 0x1f) + ('A' - 1);
rev = (sig[2] << 8) | sig[3];
sprintf(str + 3, "%04X", rev);
return str;
}
#ifdef CONFIG_ISA
static __init int hp100_isa_probe1(struct net_device *dev, int ioaddr)
{
const char *sig;
int i;
if (!request_region(ioaddr, HP100_REGION_SIZE, "hp100"))
goto err;
if (hp100_inw(HW_ID) != HP100_HW_ID_CASCADE) {
release_region(ioaddr, HP100_REGION_SIZE);
goto err;
}
sig = hp100_read_id(ioaddr);
release_region(ioaddr, HP100_REGION_SIZE);
if (sig == NULL)
goto err;
for (i = 0; i < ARRAY_SIZE(hp100_isa_tbl); i++) {
if (!strcmp(hp100_isa_tbl[i], sig))
break;
}
if (i < ARRAY_SIZE(hp100_isa_tbl))
return hp100_probe1(dev, ioaddr, HP100_BUS_ISA, NULL);
err:
return -ENODEV;
}
/*
* Probe for ISA board.
* EISA and PCI are handled by device infrastructure.
*/
static int __init hp100_isa_probe(struct net_device *dev, int addr)
{
int err = -ENODEV;
/* Probe for a specific ISA address */
if (addr > 0xff && addr < 0x400)
err = hp100_isa_probe1(dev, addr);
else if (addr != 0)
err = -ENXIO;
else {
/* Probe all ISA possible port regions */
for (addr = 0x100; addr < 0x400; addr += 0x20) {
err = hp100_isa_probe1(dev, addr);
if (!err)
break;
}
}
return err;
}
#endif /* CONFIG_ISA */
#if !defined(MODULE) && defined(CONFIG_ISA)
struct net_device * __init hp100_probe(int unit)
{
struct net_device *dev = alloc_etherdev(sizeof(struct hp100_private));
int err;
if (!dev)
return ERR_PTR(-ENODEV);
#ifdef HP100_DEBUG_B
hp100_outw(0x4200, TRACE);
printk("hp100: %s: probe\n", dev->name);
#endif
if (unit >= 0) {
sprintf(dev->name, "eth%d", unit);
netdev_boot_setup_check(dev);
}
err = hp100_isa_probe(dev, dev->base_addr);
if (err)
goto out;
return dev;
out:
free_netdev(dev);
return ERR_PTR(err);
}
#endif /* !MODULE && CONFIG_ISA */
static const struct net_device_ops hp100_bm_netdev_ops = {
.ndo_open = hp100_open,
.ndo_stop = hp100_close,
.ndo_start_xmit = hp100_start_xmit_bm,
.ndo_get_stats = hp100_get_stats,
.ndo_set_rx_mode = hp100_set_multicast_list,
.ndo_set_mac_address = eth_mac_addr,
.ndo_validate_addr = eth_validate_addr,
};
static const struct net_device_ops hp100_netdev_ops = {
.ndo_open = hp100_open,
.ndo_stop = hp100_close,
.ndo_start_xmit = hp100_start_xmit,
.ndo_get_stats = hp100_get_stats,
.ndo_set_rx_mode = hp100_set_multicast_list,
.ndo_set_mac_address = eth_mac_addr,
.ndo_validate_addr = eth_validate_addr,
};
static int hp100_probe1(struct net_device *dev, int ioaddr, u_char bus,
struct pci_dev *pci_dev)
{
int i;
int err = -ENODEV;
const char *eid;
u_int chip;
u_char uc;
u_int memory_size = 0, virt_memory_size = 0;
u_short local_mode, lsw;
short mem_mapped;
unsigned long mem_ptr_phys;
void __iomem *mem_ptr_virt;
struct hp100_private *lp;
#ifdef HP100_DEBUG_B
hp100_outw(0x4201, TRACE);
printk("hp100: %s: probe1\n", dev->name);
#endif
/* memory region for programmed i/o */
if (!request_region(ioaddr, HP100_REGION_SIZE, "hp100"))
goto out1;
if (hp100_inw(HW_ID) != HP100_HW_ID_CASCADE)
goto out2;
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;
eid = hp100_read_id(ioaddr);
if (eid == NULL) { /* bad checksum? */
printk(KERN_WARNING "%s: bad ID checksum at base port 0x%x\n",
__func__, ioaddr);
goto out2;
}
hp100_page(ID_MAC_ADDR);
for (i = uc = 0; i < 7; i++)
uc += hp100_inb(LAN_ADDR + i);
if (uc != 0xff) {
printk(KERN_WARNING
"%s: bad lan address checksum at port 0x%x)\n",
__func__, ioaddr);
err = -EIO;
goto out2;
}
/* 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: IO mapped mode forced.\n");
} 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: Shared memory mode requested.\n");
} 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: Busmaster mode requested.\n");
}
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)) {
/* Conversion to new PCI API :
* I don't have the doc, but I assume that the card
* can map the full 32bit address space.
* Also, we can have EISA Busmaster cards (not tested),
* so beware !!! - Jean II */
if((bus == HP100_BUS_PCI) &&
(pci_set_dma_mask(pci_dev, DMA_BIT_MASK(32)))) {
/* Gracefully fallback to shared memory */
goto busmasterfail;
}
printk("hp100: Busmaster mode enabled.\n");
hp100_outw(HP100_MEM_EN | HP100_IO_EN | HP100_RESET_LB, OPTION_LSW);
} else {
busmasterfail:
#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: Can only use programmed i/o mode.\n");
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: Failed to ioremap the PCI card memory. Will have to use i/o mapped mode.\n");
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: Using (slow) programmed i/o mode.\n");
}
/* Initialise the "private" data structure for this card. */
lp = netdev_priv(dev);
spin_lock_init(&lp->lock);
strlcpy(lp->id, eid, HP100_SIG_LEN);
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 */
if (lp->mode == 1) /* busmaster */
dev->netdev_ops = &hp100_bm_netdev_ops;
else
dev->netdev_ops = &hp100_netdev_ops;
/* 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);
/* 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 */
dma_addr_t page_baddr;
/* Get physically continuous memory for TX & RX PDLs */
/* Conversion to new PCI API :
* Pages are always aligned and zeroed, no need to it ourself.
* Doc says should be OK for EISA bus as well - Jean II */
lp->page_vaddr_algn = pci_alloc_consistent(lp->pci_dev, MAX_RINGSIZE, &page_baddr);
if (!lp->page_vaddr_algn) {
err = -ENOMEM;
goto out_mem_ptr;
}
lp->whatever_offset = ((u_long) page_baddr) - ((u_long) lp->page_vaddr_algn);
#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: at 0x%x, IRQ %d, ", 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: Memory area at 0x%lx-0x%lx", 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: ");
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 (10baseT).\n");
break;
case HP100_LAN_COAX:
printk("10Mb/s network (coax).\n");
break;
default:
printk("Warning! Link down.\n");
}
err = register_netdev(dev);
if (err)
goto out3;
return 0;
out3:
if (local_mode == 1)
pci_free_consistent(lp->pci_dev, MAX_RINGSIZE + 0x0f,
lp->page_vaddr_algn,
virt_to_whatever(dev, lp->page_vaddr_algn));
out_mem_ptr:
if (mem_ptr_virt)
iounmap(mem_ptr_virt);
out2:
release_region(ioaddr, HP100_REGION_SIZE);
out1:
return err;
}
/* 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 = netdev_priv(dev);
#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, 1);
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, 1);
/* 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, 0);
/* ------- initialisation complete ----------- */
/* Finally try to log in the Hub if there may be a VG connection. */
if ((lp->lan_type == HP100_LAN_100) || (lp->lan_type == HP100_LAN_ERR))
hp100_login_to_vg_hub(dev, 0); /* 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 = netdev_priv(dev);
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 */