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linux_dsm_epyc7002/drivers/net/hp100.c
David Howells 7d12e780e0 IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.

The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around.  On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).

Where appropriate, an arch may override the generic storage facility and do
something different with the variable.  On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.

Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions.  Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller.  A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.

I've build this code with allyesconfig for x86_64 and i386.  I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.

This will affect all archs.  Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:

	struct pt_regs *old_regs = set_irq_regs(regs);

And put the old one back at the end:

	set_irq_regs(old_regs);

Don't pass regs through to generic_handle_irq() or __do_IRQ().

In timer_interrupt(), this sort of change will be necessary:

	-	update_process_times(user_mode(regs));
	-	profile_tick(CPU_PROFILING, regs);
	+	update_process_times(user_mode(get_irq_regs()));
	+	profile_tick(CPU_PROFILING);

I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().

Some notes on the interrupt handling in the drivers:

 (*) input_dev() is now gone entirely.  The regs pointer is no longer stored in
     the input_dev struct.

 (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking.  It does
     something different depending on whether it's been supplied with a regs
     pointer or not.

 (*) Various IRQ handler function pointers have been moved to type
     irq_handler_t.

Signed-Off-By: David Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 15:10:12 +01:00

3075 lines
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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 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
**
**
** 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/module.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/ioport.h>
#include <linux/slab.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];
struct net_device_stats 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_algn; /* Aligned virtual address of allocated page */
u_long whatever_offset; /* Offset to bus/phys/dma address */
int rxrcommit; /* # Rx PDLs commited to adapter */
int txrcommit; /* # Tx PDLs commited to adapter */
};
/*
* variables
*/
#ifdef CONFIG_ISA
static const char *hp100_isa_tbl[] = {
"HWPF150", /* HP J2573 rev A */
"HWP1950", /* HP J2573 */
};
#endif
#ifdef CONFIG_EISA
static 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);
#endif
#ifdef CONFIG_PCI
static 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);
#endif
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 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 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 __devinit 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);
SET_MODULE_OWNER(dev);
#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 int __devinit 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 "hp100_probe: bad ID checksum at base port 0x%x\n", 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 "hp100_probe: bad lan address checksum at port 0x%x)\n", 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_32BIT_MASK))) {
/* 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 */
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);
/* 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 continous 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 */
if ((lp->page_vaddr_algn = pci_alloc_consistent(lp->pci_dev, MAX_RINGSIZE, &page_baddr)) == NULL) {
err = -ENOMEM;
goto out2;
}
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));
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 */
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 = netdev_priv(dev);
#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 ? IRQF_SHARED : IRQF_DISABLED,
"hp100", 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 = netdev_priv(dev);
#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, 0);
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 = netdev_priv(dev);
hp100_ring_t *ringptr;
u_int *pageptr; /* Warning : increment by 4 - Jean II */
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 long) pdlptr) & 0xf))
printk("hp100: %s: Init rxpdl: Unaligned pdlptr 0x%lx.\n",
dev->name, (unsigned long) pdlptr);
ringptr->pdl = pdlptr + 1;
ringptr->pdl_paddr = virt_to_whatever(dev, 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_whatever(dev, 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 long) pdlptr) & 0xf))
printk("hp100: %s: Init txpdl: Unaligned pdlptr 0x%lx.\n", dev->name, (unsigned long) pdlptr);
ringptr->pdl = pdlptr; /* +1; */
ringptr->pdl_paddr = virt_to_whatever(dev, 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
/* Conversion to new PCI API : map skbuf data to PCI bus.
* Doc says it's OK for EISA as well - Jean II */
ringptr->pdl[0] = 0x00020000; /* Write PDH */
ringptr->pdl[3] = pdl_map_data(netdev_priv(dev),
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 = netdev_priv(dev);
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 = netdev_priv(dev);
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, 1);
}
hp100_page(PERFORMANCE);
/* hp100_outw( HP100_BM_READ | HP100_BM_WRITE | HP100_RESET_HB, OPTION_LSW ); */
/* Busmaster mode should be shut down now. */
}
static int hp100_check_lan(struct net_device *dev)
{
struct hp100_private *lp = netdev_priv(dev);
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, 0); /* relogin */
hp100_start_interface(dev);
}
return 0;
}
/*
* 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 = netdev_priv(dev);
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;
if (lp->chip == HP100_CHIPID_SHASTA && skb_padto(skb, ETH_ZLEN))
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 (time_before(jiffies, dev->trans_start + HZ))
return -EAGAIN;
if (hp100_check_lan(dev))
return -EIO;
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, 0);
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 settings 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, 0);
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, 0);
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 */
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 */
}
/* Conversion to new PCI API : map skbuf data to PCI bus.
* Doc says it's OK for EISA as well - Jean II */
ringptr->pdl[1] = ((u32) pci_map_single(lp->pci_dev, skb->data, ringptr->pdl[2], PCI_DMA_TODEVICE)); /* 1st Frag: Adr. of data */
/* 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 = netdev_priv(dev);
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
/* Conversion to new PCI API : NOP */
pci_unmap_single(lp->pci_dev, (dma_addr_t) lp->txrhead->pdl[1], lp->txrhead->pdl[2], PCI_DMA_TODEVICE);
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 = netdev_priv(dev);
#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 (hp100_check_lan(dev))
return -EIO;
/* 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 (time_before(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, 0);
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, 0);
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, 0);
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 */
/* 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 { /* 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 = netdev_priv(dev);
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 */
header = readl(lp->mem_ptr_virt);
} 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+2);
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_reserve(skb,2);
skb->dev = dev;
/* ptr to start of the sk_buff data area */
skb_put(skb, pkt_len);
ptr = skb->data;
/* Now transfer the data from the card into that area */
if (lp->mode == 2)
memcpy_fromio(ptr, lp->mem_ptr_virt,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 = netdev_priv(dev);
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);
/* Conversion to new PCI API : NOP */
pci_unmap_single(lp->pci_dev, (dma_addr_t) ptr->pdl[3], MAX_ETHER_SIZE, PCI_DMA_FROMDEVICE);
#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 struct net_device_stats *hp100_get_stats(struct net_device *dev)
{
unsigned long flags;
int ioaddr = dev->base_addr;
struct hp100_private *lp = netdev_priv(dev);
#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 = netdev_priv(dev);
#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)
{
#ifdef HP100_DEBUG_B
int ioaddr = dev->base_addr;
#endif
struct hp100_private *lp = netdev_priv(dev);
#ifdef HP100_DEBUG_B
int ioaddr = dev->base_addr;
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 = netdev_priv(dev);
#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, 1); /* 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, 1); /* 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 irqreturn_t hp100_interrupt(int irq, void *dev_id)
{
struct net_device *dev = (struct net_device *) dev_id;
struct hp100_private *lp = netdev_priv(dev);
int ioaddr;
u_int val;
if (dev == NULL)
return IRQ_NONE;
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 IRQ_NONE;
}
/* 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();
return IRQ_HANDLED;
}
/*
* some misc functions
*/
static void hp100_start_interface(struct net_device *dev)
{
unsigned long flags;
int ioaddr = dev->base_addr;
struct hp100_private *lp = netdev_priv(dev);
#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 = netdev_priv(dev);
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 = netdev_priv(dev);
#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? */
/*
* This can be overriden by dos utility, so if this has no effect,
* perhaps you need to download that utility from HP and set card
* back to "auto detect".
*/
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_COAX;
}
/* Those cards don't have a 100 Mbit connector */
if ( !strcmp(lp->id, "HWP1920") ||
(lp->pci_dev &&
lp->pci_dev->vendor == PCI_VENDOR_ID &&
(lp->pci_dev->device == PCI_DEVICE_ID_HP_J2970A ||
lp->pci_dev->device == PCI_DEVICE_ID_HP_J2973A)))
return HP100_LAN_ERR;
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 = netdev_priv(dev);
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())
schedule_timeout_interruptible(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())
schedule_timeout_interruptible(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())
schedule_timeout_interruptible(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())
schedule_timeout_interruptible(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())
schedule_timeout_interruptible(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 = netdev_priv(dev);
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 == 1) || (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())
schedule_timeout_interruptible(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())
schedule_timeout_interruptible(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())
schedule_timeout_interruptible(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); /* won't 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 = netdev_priv(dev);
#ifdef HP100_DEBUG_B
hp100_outw(0x4226, TRACE);
printk("hp100: %s: cascade_reset\n", dev->name);
#endif
if (enable) {
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 can't 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
static void cleanup_dev(struct net_device *d)
{
struct hp100_private *p = netdev_priv(d);
unregister_netdev(d);
release_region(d->base_addr, HP100_REGION_SIZE);
if (p->mode == 1) /* busmaster */
pci_free_consistent(p->pci_dev, MAX_RINGSIZE + 0x0f,
p->page_vaddr_algn,
virt_to_whatever(d, p->page_vaddr_algn));
if (p->mem_ptr_virt)
iounmap(p->mem_ptr_virt);
free_netdev(d);
}
#ifdef CONFIG_EISA
static int __init hp100_eisa_probe (struct device *gendev)
{
struct net_device *dev = alloc_etherdev(sizeof(struct hp100_private));
struct eisa_device *edev = to_eisa_device(gendev);
int err;
if (!dev)
return -ENOMEM;
SET_MODULE_OWNER(dev);
SET_NETDEV_DEV(dev, &edev->dev);
err = hp100_probe1(dev, edev->base_addr + 0xC38, HP100_BUS_EISA, NULL);
if (err)
goto out1;
#ifdef HP100_DEBUG
printk("hp100: %s: EISA adapter found at 0x%x\n", dev->name,
dev->base_addr);
#endif
gendev->driver_data = dev;
return 0;
out1:
free_netdev(dev);
return err;
}
static int __devexit hp100_eisa_remove (struct device *gendev)
{
struct net_device *dev = gendev->driver_data;
cleanup_dev(dev);
return 0;
}
static struct eisa_driver hp100_eisa_driver = {
.id_table = hp100_eisa_tbl,
.driver = {
.name = "hp100",
.probe = hp100_eisa_probe,
.remove = __devexit_p (hp100_eisa_remove),
}
};
#endif
#ifdef CONFIG_PCI
static int __devinit hp100_pci_probe (struct pci_dev *pdev,
const struct pci_device_id *ent)
{
struct net_device *dev;
int ioaddr;
u_short pci_command;
int err;
if (pci_enable_device(pdev))
return -ENODEV;
dev = alloc_etherdev(sizeof(struct hp100_private));
if (!dev) {
err = -ENOMEM;
goto out0;
}
SET_MODULE_OWNER(dev);
SET_NETDEV_DEV(dev, &pdev->dev);
pci_read_config_word(pdev, 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(pdev, 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(pdev, PCI_COMMAND, pci_command);
}
ioaddr = pci_resource_start(pdev, 0);
err = hp100_probe1(dev, ioaddr, HP100_BUS_PCI, pdev);
if (err)
goto out1;
#ifdef HP100_DEBUG
printk("hp100: %s: PCI adapter found at 0x%x\n", dev->name, ioaddr);
#endif
pci_set_drvdata(pdev, dev);
return 0;
out1:
free_netdev(dev);
out0:
pci_disable_device(pdev);
return err;
}
static void __devexit hp100_pci_remove (struct pci_dev *pdev)
{
struct net_device *dev = pci_get_drvdata(pdev);
cleanup_dev(dev);
pci_disable_device(pdev);
}
static struct pci_driver hp100_pci_driver = {
.name = "hp100",
.id_table = hp100_pci_tbl,
.probe = hp100_pci_probe,
.remove = __devexit_p(hp100_pci_remove),
};
#endif
/*
* module section
*/
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: to register three isa devices, use:
* option hp100 hp100_port=0,0,0
* to register one card at io 0x280 as eth239, use:
* option hp100 hp100_port=0x280
*/
#if defined(MODULE) && defined(CONFIG_ISA)
#define HP100_DEVICES 5
/* Parameters set by insmod */
static int hp100_port[HP100_DEVICES] = { 0, [1 ... (HP100_DEVICES-1)] = -1 };
module_param_array(hp100_port, int, NULL, 0);
/* List of devices */
static struct net_device *hp100_devlist[HP100_DEVICES];
static int __init hp100_isa_init(void)
{
struct net_device *dev;
int i, err, cards = 0;
/* Don't autoprobe ISA bus */
if (hp100_port[0] == 0)
return -ENODEV;
/* Loop on all possible base addresses */
for (i = 0; i < HP100_DEVICES && hp100_port[i] != -1; ++i) {
dev = alloc_etherdev(sizeof(struct hp100_private));
if (!dev) {
printk(KERN_WARNING "hp100: no memory for network device\n");
while (cards > 0)
cleanup_dev(hp100_devlist[--cards]);
return -ENOMEM;
}
SET_MODULE_OWNER(dev);
err = hp100_isa_probe(dev, hp100_port[i]);
if (!err)
hp100_devlist[cards++] = dev;
else
free_netdev(dev);
}
return cards > 0 ? 0 : -ENODEV;
}
static void __exit hp100_isa_cleanup(void)
{
int i;
for (i = 0; i < HP100_DEVICES; i++) {
struct net_device *dev = hp100_devlist[i];
if (dev)
cleanup_dev(dev);
}
}
#else
#define hp100_isa_init() (0)
#define hp100_isa_cleanup() do { } while(0)
#endif
static int __init hp100_module_init(void)
{
int err;
err = hp100_isa_init();
if (err && err != -ENODEV)
goto out;
#ifdef CONFIG_EISA
err = eisa_driver_register(&hp100_eisa_driver);
if (err && err != -ENODEV)
goto out2;
#endif
#ifdef CONFIG_PCI
err = pci_module_init(&hp100_pci_driver);
if (err && err != -ENODEV)
goto out3;
#endif
out:
return err;
out3:
#ifdef CONFIG_EISA
eisa_driver_unregister (&hp100_eisa_driver);
out2:
#endif
hp100_isa_cleanup();
goto out;
}
static void __exit hp100_module_exit(void)
{
hp100_isa_cleanup();
#ifdef CONFIG_EISA
eisa_driver_unregister (&hp100_eisa_driver);
#endif
#ifdef CONFIG_PCI
pci_unregister_driver (&hp100_pci_driver);
#endif
}
module_init(hp100_module_init)
module_exit(hp100_module_exit)
/*
* 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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