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OpenCloudOS-Kernel/drivers/net/atp.c

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Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/* atp.c: Attached (pocket) ethernet adapter driver for linux. */
/*
This is a driver for commonly OEM pocket (parallel port)
ethernet adapters based on the Realtek RTL8002 and RTL8012 chips.
Written 1993-2000 by Donald Becker.
This software may be used and distributed according to the terms of
the GNU General Public License (GPL), incorporated herein by reference.
Drivers based on or derived from this code fall under the GPL and must
retain the authorship, copyright and license notice. This file is not
a complete program and may only be used when the entire operating
system is licensed under the GPL.
Copyright 1993 United States Government as represented by the Director,
National Security Agency. Copyright 1994-2000 retained by the original
author, Donald Becker. The timer-based reset code was supplied in 1995
by Bill Carlson, wwc@super.org.
The author may be reached as becker@scyld.com, or C/O
Scyld Computing Corporation
410 Severn Ave., Suite 210
Annapolis MD 21403
Support information and updates available at
http://www.scyld.com/network/atp.html
Modular support/softnet added by Alan Cox.
_bit abuse fixed up by Alan Cox
*/
remove broken URLs from net drivers' output Remove broken URLs (www.scyld.com) from network drivers' logging output. URLs in comments and other strings are left intact. Signed-off-by: Markus Dahms <dahms@fh-brandenburg.de> Acked-by: Jesper Juhl <jesper.juhl@gmail.com> Acked-by: Alan Cox <alan@redhat.com> igned-off-by: Adrian Bunk <bunk@stusta.de>
2007-05-09 13:58:10 +08:00
static const char version[] =
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
"atp.c:v1.09=ac 2002/10/01 Donald Becker <becker@scyld.com>\n";
/* The user-configurable values.
These may be modified when a driver module is loaded.*/
static int debug = 1; /* 1 normal messages, 0 quiet .. 7 verbose. */
#define net_debug debug
/* Maximum events (Rx packets, etc.) to handle at each interrupt. */
static int max_interrupt_work = 15;
#define NUM_UNITS 2
/* The standard set of ISA module parameters. */
static int io[NUM_UNITS];
static int irq[NUM_UNITS];
static int xcvr[NUM_UNITS]; /* The data transfer mode. */
/* Operational parameters that are set at compile time. */
/* Time in jiffies before concluding the transmitter is hung. */
#define TX_TIMEOUT (400*HZ/1000)
/*
This file is a device driver for the RealTek (aka AT-Lan-Tec) pocket
ethernet adapter. This is a common low-cost OEM pocket ethernet
adapter, sold under many names.
Sources:
This driver was written from the packet driver assembly code provided by
Vincent Bono of AT-Lan-Tec. Ever try to figure out how a complicated
device works just from the assembly code? It ain't pretty. The following
description is written based on guesses and writing lots of special-purpose
code to test my theorized operation.
In 1997 Realtek made available the documentation for the second generation
RTL8012 chip, which has lead to several driver improvements.
http://www.realtek.com.tw/cn/cn.html
Theory of Operation
The RTL8002 adapter seems to be built around a custom spin of the SEEQ
controller core. It probably has a 16K or 64K internal packet buffer, of
which the first 4K is devoted to transmit and the rest to receive.
The controller maintains the queue of received packet and the packet buffer
access pointer internally, with only 'reset to beginning' and 'skip to next
packet' commands visible. The transmit packet queue holds two (or more?)
packets: both 'retransmit this packet' (due to collision) and 'transmit next
packet' commands must be started by hand.
The station address is stored in a standard bit-serial EEPROM which must be
read (ughh) by the device driver. (Provisions have been made for
substituting a 74S288 PROM, but I haven't gotten reports of any models
using it.) Unlike built-in devices, a pocket adapter can temporarily lose
power without indication to the device driver. The major effect is that
the station address, receive filter (promiscuous, etc.) and transceiver
must be reset.
The controller itself has 16 registers, some of which use only the lower
bits. The registers are read and written 4 bits at a time. The four bit
register address is presented on the data lines along with a few additional
timing and control bits. The data is then read from status port or written
to the data port.
Correction: the controller has two banks of 16 registers. The second
bank contains only the multicast filter table (now used) and the EEPROM
access registers.
Since the bulk data transfer of the actual packets through the slow
parallel port dominates the driver's running time, four distinct data
(non-register) transfer modes are provided by the adapter, two in each
direction. In the first mode timing for the nibble transfers is
provided through the data port. In the second mode the same timing is
provided through the control port. In either case the data is read from
the status port and written to the data port, just as it is accessing
registers.
In addition to the basic data transfer methods, several more are modes are
created by adding some delay by doing multiple reads of the data to allow
it to stabilize. This delay seems to be needed on most machines.
The data transfer mode is stored in the 'dev->if_port' field. Its default
value is '4'. It may be overridden at boot-time using the third parameter
to the "ether=..." initialization.
The header file <atp.h> provides inline functions that encapsulate the
register and data access methods. These functions are hand-tuned to
generate reasonable object code. This header file also documents my
interpretations of the device registers.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/fcntl.h>
#include <linux/interrupt.h>
#include <linux/ioport.h>
#include <linux/in.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/crc32.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/spinlock.h>
#include <linux/delay.h>
#include <linux/bitops.h>
#include <asm/system.h>
#include <asm/io.h>
#include <asm/dma.h>
#include "atp.h"
MODULE_AUTHOR("Donald Becker <becker@scyld.com>");
MODULE_DESCRIPTION("RealTek RTL8002/8012 parallel port Ethernet driver");
MODULE_LICENSE("GPL");
module_param(max_interrupt_work, int, 0);
module_param(debug, int, 0);
module_param_array(io, int, NULL, 0);
module_param_array(irq, int, NULL, 0);
module_param_array(xcvr, int, NULL, 0);
MODULE_PARM_DESC(max_interrupt_work, "ATP maximum events handled per interrupt");
MODULE_PARM_DESC(debug, "ATP debug level (0-7)");
MODULE_PARM_DESC(io, "ATP I/O base address(es)");
MODULE_PARM_DESC(irq, "ATP IRQ number(s)");
MODULE_PARM_DESC(xcvr, "ATP transceiver(s) (0=internal, 1=external)");
/* The number of low I/O ports used by the ethercard. */
#define ETHERCARD_TOTAL_SIZE 3
/* Sequence to switch an 8012 from printer mux to ethernet mode. */
static char mux_8012[] = { 0xff, 0xf7, 0xff, 0xfb, 0xf3, 0xfb, 0xff, 0xf7,};
struct net_local {
spinlock_t lock;
struct net_device *next_module;
struct timer_list timer; /* Media selection timer. */
long last_rx_time; /* Last Rx, in jiffies, to handle Rx hang. */
int saved_tx_size;
unsigned int tx_unit_busy:1;
unsigned char re_tx, /* Number of packet retransmissions. */
addr_mode, /* Current Rx filter e.g. promiscuous, etc. */
pac_cnt_in_tx_buf,
chip_type;
};
/* This code, written by wwc@super.org, resets the adapter every
TIMED_CHECKER ticks. This recovers from an unknown error which
hangs the device. */
#define TIMED_CHECKER (HZ/4)
#ifdef TIMED_CHECKER
#include <linux/timer.h>
static void atp_timed_checker(unsigned long ignored);
#endif
/* Index to functions, as function prototypes. */
static int atp_probe1(long ioaddr);
static void get_node_ID(struct net_device *dev);
static unsigned short eeprom_op(long ioaddr, unsigned int cmd);
static int net_open(struct net_device *dev);
static void hardware_init(struct net_device *dev);
static void write_packet(long ioaddr, int length, unsigned char *packet, int pad, int mode);
static void trigger_send(long ioaddr, int length);
static int atp_send_packet(struct sk_buff *skb, struct net_device *dev);
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 21:55:46 +08:00
static irqreturn_t atp_interrupt(int irq, void *dev_id);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
static void net_rx(struct net_device *dev);
static void read_block(long ioaddr, int length, unsigned char *buffer, int data_mode);
static int net_close(struct net_device *dev);
static void set_rx_mode_8002(struct net_device *dev);
static void set_rx_mode_8012(struct net_device *dev);
static void tx_timeout(struct net_device *dev);
/* A list of all installed ATP devices, for removing the driver module. */
static struct net_device *root_atp_dev;
/* Check for a network adapter of this type, and return '0' iff one exists.
If dev->base_addr == 0, probe all likely locations.
If dev->base_addr == 1, always return failure.
If dev->base_addr == 2, allocate space for the device and return success
(detachable devices only).
drivers/net: Trim trailing whitespace Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-14 01:24:59 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
FIXME: we should use the parport layer for this
*/
static int __init atp_init(void)
{
int *port, ports[] = {0x378, 0x278, 0x3bc, 0};
int base_addr = io[0];
if (base_addr > 0x1ff) /* Check a single specified location. */
return atp_probe1(base_addr);
else if (base_addr == 1) /* Don't probe at all. */
return -ENXIO;
for (port = ports; *port; port++) {
long ioaddr = *port;
outb(0x57, ioaddr + PAR_DATA);
if (inb(ioaddr + PAR_DATA) != 0x57)
continue;
if (atp_probe1(ioaddr) == 0)
return 0;
}
return -ENODEV;
}
static int __init atp_probe1(long ioaddr)
{
struct net_device *dev = NULL;
struct net_local *lp;
int saved_ctrl_reg, status, i;
int res;
outb(0xff, ioaddr + PAR_DATA);
/* Save the original value of the Control register, in case we guessed
wrong. */
saved_ctrl_reg = inb(ioaddr + PAR_CONTROL);
if (net_debug > 3)
printk("atp: Control register was %#2.2x.\n", saved_ctrl_reg);
/* IRQEN=0, SLCTB=high INITB=high, AUTOFDB=high, STBB=high. */
outb(0x04, ioaddr + PAR_CONTROL);
#ifndef final_version
if (net_debug > 3) {
/* Turn off the printer multiplexer on the 8012. */
for (i = 0; i < 8; i++)
outb(mux_8012[i], ioaddr + PAR_DATA);
write_reg(ioaddr, MODSEL, 0x00);
printk("atp: Registers are ");
for (i = 0; i < 32; i++)
printk(" %2.2x", read_nibble(ioaddr, i));
printk(".\n");
}
#endif
/* Turn off the printer multiplexer on the 8012. */
for (i = 0; i < 8; i++)
outb(mux_8012[i], ioaddr + PAR_DATA);
write_reg_high(ioaddr, CMR1, CMR1h_RESET);
/* udelay() here? */
status = read_nibble(ioaddr, CMR1);
if (net_debug > 3) {
printk(KERN_DEBUG "atp: Status nibble was %#2.2x..", status);
for (i = 0; i < 32; i++)
printk(" %2.2x", read_nibble(ioaddr, i));
printk("\n");
}
if ((status & 0x78) != 0x08) {
/* The pocket adapter probe failed, restore the control register. */
outb(saved_ctrl_reg, ioaddr + PAR_CONTROL);
return -ENODEV;
}
status = read_nibble(ioaddr, CMR2_h);
if ((status & 0x78) != 0x10) {
outb(saved_ctrl_reg, ioaddr + PAR_CONTROL);
return -ENODEV;
}
dev = alloc_etherdev(sizeof(struct net_local));
if (!dev)
return -ENOMEM;
/* Find the IRQ used by triggering an interrupt. */
write_reg_byte(ioaddr, CMR2, 0x01); /* No accept mode, IRQ out. */
write_reg_high(ioaddr, CMR1, CMR1h_RxENABLE | CMR1h_TxENABLE); /* Enable Tx and Rx. */
/* Omit autoIRQ routine for now. Use "table lookup" instead. Uhgggh. */
if (irq[0])
dev->irq = irq[0];
else if (ioaddr == 0x378)
dev->irq = 7;
else
dev->irq = 5;
write_reg_high(ioaddr, CMR1, CMR1h_TxRxOFF); /* Disable Tx and Rx units. */
write_reg(ioaddr, CMR2, CMR2_NULL);
dev->base_addr = ioaddr;
/* Read the station address PROM. */
get_node_ID(dev);
#ifndef MODULE
if (net_debug)
remove broken URLs from net drivers' output Remove broken URLs (www.scyld.com) from network drivers' logging output. URLs in comments and other strings are left intact. Signed-off-by: Markus Dahms <dahms@fh-brandenburg.de> Acked-by: Jesper Juhl <jesper.juhl@gmail.com> Acked-by: Alan Cox <alan@redhat.com> igned-off-by: Adrian Bunk <bunk@stusta.de>
2007-05-09 13:58:10 +08:00
printk(KERN_INFO "%s", version);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
#endif
[NET]: Introduce and use print_mac() and DECLARE_MAC_BUF() This is nicer than the MAC_FMT stuff. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-04 08:59:30 +08:00
printk(KERN_NOTICE "%s: Pocket adapter found at %#3lx, IRQ %d, "
net: convert print_mac to %pM This converts pretty much everything to print_mac. There were a few things that had conflicts which I have just dropped for now, no harm done. I've built an allyesconfig with this and looked at the files that weren't built very carefully, but it's a huge patch. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-28 06:59:26 +08:00
"SAPROM %pM.\n",
dev->name, dev->base_addr, dev->irq, dev->dev_addr);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/* Reset the ethernet hardware and activate the printer pass-through. */
write_reg_high(ioaddr, CMR1, CMR1h_RESET | CMR1h_MUX);
lp = netdev_priv(dev);
lp->chip_type = RTL8002;
lp->addr_mode = CMR2h_Normal;
spin_lock_init(&lp->lock);
/* For the ATP adapter the "if_port" is really the data transfer mode. */
if (xcvr[0])
dev->if_port = xcvr[0];
else
dev->if_port = (dev->mem_start & 0xf) ? (dev->mem_start & 0x7) : 4;
if (dev->mem_end & 0xf)
net_debug = dev->mem_end & 7;
dev->open = net_open;
dev->stop = net_close;
dev->hard_start_xmit = atp_send_packet;
dev->set_multicast_list =
lp->chip_type == RTL8002 ? &set_rx_mode_8002 : &set_rx_mode_8012;
dev->tx_timeout = tx_timeout;
dev->watchdog_timeo = TX_TIMEOUT;
res = register_netdev(dev);
if (res) {
free_netdev(dev);
return res;
}
lp->next_module = root_atp_dev;
root_atp_dev = dev;
return 0;
}
/* Read the station address PROM, usually a word-wide EEPROM. */
static void __init get_node_ID(struct net_device *dev)
{
long ioaddr = dev->base_addr;
int sa_offset = 0;
int i;
write_reg(ioaddr, CMR2, CMR2_EEPROM); /* Point to the EEPROM control registers. */
/* Some adapters have the station address at offset 15 instead of offset
zero. Check for it, and fix it if needed. */
if (eeprom_op(ioaddr, EE_READ(0)) == 0xffff)
sa_offset = 15;
for (i = 0; i < 3; i++)
misc drivers/net annotations Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-03-17 06:21:54 +08:00
((__be16 *)dev->dev_addr)[i] =
cpu_to_be16(eeprom_op(ioaddr, EE_READ(sa_offset + i)));
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
write_reg(ioaddr, CMR2, CMR2_NULL);
}
/*
An EEPROM read command starts by shifting out 0x60+address, and then
shifting in the serial data. See the NatSemi databook for details.
* ________________
* CS : __|
* ___ ___
* CLK: ______| |___| |
* __ _______ _______
* DI : __X_______X_______X
* DO : _________X_______X
*/
static unsigned short __init eeprom_op(long ioaddr, u32 cmd)
{
unsigned eedata_out = 0;
int num_bits = EE_CMD_SIZE;
while (--num_bits >= 0) {
char outval = (cmd & (1<<num_bits)) ? EE_DATA_WRITE : 0;
write_reg_high(ioaddr, PROM_CMD, outval | EE_CLK_LOW);
write_reg_high(ioaddr, PROM_CMD, outval | EE_CLK_HIGH);
eedata_out <<= 1;
if (read_nibble(ioaddr, PROM_DATA) & EE_DATA_READ)
eedata_out++;
}
write_reg_high(ioaddr, PROM_CMD, EE_CLK_LOW & ~EE_CS);
return eedata_out;
}
/* Open/initialize the board. This is called (in the current kernel)
sometime after booting when the 'ifconfig' program is run.
This routine sets everything up anew at each open, even
registers that "should" only need to be set once at boot, so that
there is non-reboot way to recover if something goes wrong.
netdevice: Kill netdev->priv This is the last shoot of this series. After I removing all directly reference of netdev->priv, I am killing "priv" of "struct net_device" and fixing relative comments/docs. Anyone will not be allowed to reference netdev->priv directly. If you want to reference the memory of private data, use netdev_priv() instead. If the private data is not allocted when alloc_netdev(), use netdev->ml_priv to point that memory after you creating that private data. Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-08 17:14:16 +08:00
This is an attachable device: if there is no private entry then it wasn't
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
probed for at boot-time, and we need to probe for it again.
*/
static int net_open(struct net_device *dev)
{
struct net_local *lp = netdev_priv(dev);
int ret;
/* The interrupt line is turned off (tri-stated) when the device isn't in
use. That's especially important for "attached" interfaces where the
port or interrupt may be shared. */
ret = request_irq(dev->irq, &atp_interrupt, 0, dev->name, dev);
if (ret)
return ret;
hardware_init(dev);
init_timer(&lp->timer);
lp->timer.expires = jiffies + TIMED_CHECKER;
lp->timer.data = (unsigned long)dev;
lp->timer.function = &atp_timed_checker; /* timer handler */
add_timer(&lp->timer);
netif_start_queue(dev);
return 0;
}
/* This routine resets the hardware. We initialize everything, assuming that
the hardware may have been temporarily detached. */
static void hardware_init(struct net_device *dev)
{
struct net_local *lp = netdev_priv(dev);
long ioaddr = dev->base_addr;
int i;
/* Turn off the printer multiplexer on the 8012. */
for (i = 0; i < 8; i++)
outb(mux_8012[i], ioaddr + PAR_DATA);
write_reg_high(ioaddr, CMR1, CMR1h_RESET);
for (i = 0; i < 6; i++)
write_reg_byte(ioaddr, PAR0 + i, dev->dev_addr[i]);
write_reg_high(ioaddr, CMR2, lp->addr_mode);
if (net_debug > 2) {
printk(KERN_DEBUG "%s: Reset: current Rx mode %d.\n", dev->name,
(read_nibble(ioaddr, CMR2_h) >> 3) & 0x0f);
}
write_reg(ioaddr, CMR2, CMR2_IRQOUT);
write_reg_high(ioaddr, CMR1, CMR1h_RxENABLE | CMR1h_TxENABLE);
/* Enable the interrupt line from the serial port. */
outb(Ctrl_SelData + Ctrl_IRQEN, ioaddr + PAR_CONTROL);
/* Unmask the interesting interrupts. */
write_reg(ioaddr, IMR, ISR_RxOK | ISR_TxErr | ISR_TxOK);
write_reg_high(ioaddr, IMR, ISRh_RxErr);
lp->tx_unit_busy = 0;
lp->pac_cnt_in_tx_buf = 0;
lp->saved_tx_size = 0;
}
static void trigger_send(long ioaddr, int length)
{
write_reg_byte(ioaddr, TxCNT0, length & 0xff);
write_reg(ioaddr, TxCNT1, length >> 8);
write_reg(ioaddr, CMR1, CMR1_Xmit);
}
static void write_packet(long ioaddr, int length, unsigned char *packet, int pad_len, int data_mode)
{
if (length & 1)
{
length++;
pad_len++;
}
outb(EOC+MAR, ioaddr + PAR_DATA);
if ((data_mode & 1) == 0) {
/* Write the packet out, starting with the write addr. */
outb(WrAddr+MAR, ioaddr + PAR_DATA);
do {
write_byte_mode0(ioaddr, *packet++);
} while (--length > pad_len) ;
do {
write_byte_mode0(ioaddr, 0);
} while (--length > 0) ;
} else {
/* Write the packet out in slow mode. */
unsigned char outbyte = *packet++;
outb(Ctrl_LNibWrite + Ctrl_IRQEN, ioaddr + PAR_CONTROL);
outb(WrAddr+MAR, ioaddr + PAR_DATA);
outb((outbyte & 0x0f)|0x40, ioaddr + PAR_DATA);
outb(outbyte & 0x0f, ioaddr + PAR_DATA);
outbyte >>= 4;
outb(outbyte & 0x0f, ioaddr + PAR_DATA);
outb(Ctrl_HNibWrite + Ctrl_IRQEN, ioaddr + PAR_CONTROL);
while (--length > pad_len)
write_byte_mode1(ioaddr, *packet++);
while (--length > 0)
write_byte_mode1(ioaddr, 0);
}
/* Terminate the Tx frame. End of write: ECB. */
outb(0xff, ioaddr + PAR_DATA);
outb(Ctrl_HNibWrite | Ctrl_SelData | Ctrl_IRQEN, ioaddr + PAR_CONTROL);
}
static void tx_timeout(struct net_device *dev)
{
long ioaddr = dev->base_addr;
printk(KERN_WARNING "%s: Transmit timed out, %s?\n", dev->name,
inb(ioaddr + PAR_CONTROL) & 0x10 ? "network cable problem"
: "IRQ conflict");
[NET] drivers/net: statistics cleanup #1 -- save memory and shrink code We now have struct net_device_stats embedded in struct net_device, and the default ->get_stats() hook does the obvious thing for us. Run through drivers/net/* and remove the driver-local storage of statistics, and driver-local ->get_stats() hook where applicable. This was just the low-hanging fruit in drivers/net; plenty more drivers remain to be updated. [ Resolved conflicts with napi_struct changes and fix sunqe build regression... -DaveM ] Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-04 08:41:50 +08:00
dev->stats.tx_errors++;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/* Try to restart the adapter. */
hardware_init(dev);
dev->trans_start = jiffies;
netif_wake_queue(dev);
[NET] drivers/net: statistics cleanup #1 -- save memory and shrink code We now have struct net_device_stats embedded in struct net_device, and the default ->get_stats() hook does the obvious thing for us. Run through drivers/net/* and remove the driver-local storage of statistics, and driver-local ->get_stats() hook where applicable. This was just the low-hanging fruit in drivers/net; plenty more drivers remain to be updated. [ Resolved conflicts with napi_struct changes and fix sunqe build regression... -DaveM ] Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-04 08:41:50 +08:00
dev->stats.tx_errors++;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
}
static int atp_send_packet(struct sk_buff *skb, struct net_device *dev)
{
struct net_local *lp = netdev_priv(dev);
long ioaddr = dev->base_addr;
int length;
unsigned long flags;
length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
netif_stop_queue(dev);
/* Disable interrupts by writing 0x00 to the Interrupt Mask Register.
This sequence must not be interrupted by an incoming packet. */
spin_lock_irqsave(&lp->lock, flags);
write_reg(ioaddr, IMR, 0);
write_reg_high(ioaddr, IMR, 0);
spin_unlock_irqrestore(&lp->lock, flags);
write_packet(ioaddr, length, skb->data, length-skb->len, dev->if_port);
lp->pac_cnt_in_tx_buf++;
if (lp->tx_unit_busy == 0) {
trigger_send(ioaddr, length);
lp->saved_tx_size = 0; /* Redundant */
lp->re_tx = 0;
lp->tx_unit_busy = 1;
} else
lp->saved_tx_size = length;
/* Re-enable the LPT interrupts. */
write_reg(ioaddr, IMR, ISR_RxOK | ISR_TxErr | ISR_TxOK);
write_reg_high(ioaddr, IMR, ISRh_RxErr);
dev->trans_start = jiffies;
dev_kfree_skb (skb);
return 0;
}
/* The typical workload of the driver:
Handle the network interface interrupts. */
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 21:55:46 +08:00
static irqreturn_t atp_interrupt(int irq, void *dev_instance)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
{
drivers/net: eliminate irq handler impossible checks, needless casts - Eliminate check for irq handler 'dev_id==NULL' where the condition never occurs. - Eliminate needless casts to/from void* Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-10-07 02:56:04 +08:00
struct net_device *dev = dev_instance;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
struct net_local *lp;
long ioaddr;
static int num_tx_since_rx;
int boguscount = max_interrupt_work;
int handled = 0;
ioaddr = dev->base_addr;
lp = netdev_priv(dev);
spin_lock(&lp->lock);
/* Disable additional spurious interrupts. */
outb(Ctrl_SelData, ioaddr + PAR_CONTROL);
/* The adapter's output is currently the IRQ line, switch it to data. */
write_reg(ioaddr, CMR2, CMR2_NULL);
write_reg(ioaddr, IMR, 0);
if (net_debug > 5) printk(KERN_DEBUG "%s: In interrupt ", dev->name);
while (--boguscount > 0) {
int status = read_nibble(ioaddr, ISR);
if (net_debug > 5) printk("loop status %02x..", status);
if (status & (ISR_RxOK<<3)) {
handled = 1;
write_reg(ioaddr, ISR, ISR_RxOK); /* Clear the Rx interrupt. */
do {
int read_status = read_nibble(ioaddr, CMR1);
if (net_debug > 6)
printk("handling Rx packet %02x..", read_status);
/* We acknowledged the normal Rx interrupt, so if the interrupt
is still outstanding we must have a Rx error. */
if (read_status & (CMR1_IRQ << 3)) { /* Overrun. */
[NET] drivers/net: statistics cleanup #1 -- save memory and shrink code We now have struct net_device_stats embedded in struct net_device, and the default ->get_stats() hook does the obvious thing for us. Run through drivers/net/* and remove the driver-local storage of statistics, and driver-local ->get_stats() hook where applicable. This was just the low-hanging fruit in drivers/net; plenty more drivers remain to be updated. [ Resolved conflicts with napi_struct changes and fix sunqe build regression... -DaveM ] Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-04 08:41:50 +08:00
dev->stats.rx_over_errors++;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/* Set to no-accept mode long enough to remove a packet. */
write_reg_high(ioaddr, CMR2, CMR2h_OFF);
net_rx(dev);
/* Clear the interrupt and return to normal Rx mode. */
write_reg_high(ioaddr, ISR, ISRh_RxErr);
write_reg_high(ioaddr, CMR2, lp->addr_mode);
} else if ((read_status & (CMR1_BufEnb << 3)) == 0) {
net_rx(dev);
num_tx_since_rx = 0;
} else
break;
} while (--boguscount > 0);
} else if (status & ((ISR_TxErr + ISR_TxOK)<<3)) {
handled = 1;
if (net_debug > 6) printk("handling Tx done..");
/* Clear the Tx interrupt. We should check for too many failures
and reinitialize the adapter. */
write_reg(ioaddr, ISR, ISR_TxErr + ISR_TxOK);
if (status & (ISR_TxErr<<3)) {
[NET] drivers/net: statistics cleanup #1 -- save memory and shrink code We now have struct net_device_stats embedded in struct net_device, and the default ->get_stats() hook does the obvious thing for us. Run through drivers/net/* and remove the driver-local storage of statistics, and driver-local ->get_stats() hook where applicable. This was just the low-hanging fruit in drivers/net; plenty more drivers remain to be updated. [ Resolved conflicts with napi_struct changes and fix sunqe build regression... -DaveM ] Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-04 08:41:50 +08:00
dev->stats.collisions++;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
if (++lp->re_tx > 15) {
[NET] drivers/net: statistics cleanup #1 -- save memory and shrink code We now have struct net_device_stats embedded in struct net_device, and the default ->get_stats() hook does the obvious thing for us. Run through drivers/net/* and remove the driver-local storage of statistics, and driver-local ->get_stats() hook where applicable. This was just the low-hanging fruit in drivers/net; plenty more drivers remain to be updated. [ Resolved conflicts with napi_struct changes and fix sunqe build regression... -DaveM ] Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-04 08:41:50 +08:00
dev->stats.tx_aborted_errors++;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
hardware_init(dev);
break;
}
/* Attempt to retransmit. */
if (net_debug > 6) printk("attempting to ReTx");
write_reg(ioaddr, CMR1, CMR1_ReXmit + CMR1_Xmit);
} else {
/* Finish up the transmit. */
[NET] drivers/net: statistics cleanup #1 -- save memory and shrink code We now have struct net_device_stats embedded in struct net_device, and the default ->get_stats() hook does the obvious thing for us. Run through drivers/net/* and remove the driver-local storage of statistics, and driver-local ->get_stats() hook where applicable. This was just the low-hanging fruit in drivers/net; plenty more drivers remain to be updated. [ Resolved conflicts with napi_struct changes and fix sunqe build regression... -DaveM ] Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-04 08:41:50 +08:00
dev->stats.tx_packets++;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
lp->pac_cnt_in_tx_buf--;
if ( lp->saved_tx_size) {
trigger_send(ioaddr, lp->saved_tx_size);
lp->saved_tx_size = 0;
lp->re_tx = 0;
} else
lp->tx_unit_busy = 0;
netif_wake_queue(dev); /* Inform upper layers. */
}
num_tx_since_rx++;
} else if (num_tx_since_rx > 8
&& time_after(jiffies, dev->last_rx + HZ)) {
if (net_debug > 2)
printk(KERN_DEBUG "%s: Missed packet? No Rx after %d Tx and "
"%ld jiffies status %02x CMR1 %02x.\n", dev->name,
num_tx_since_rx, jiffies - dev->last_rx, status,
(read_nibble(ioaddr, CMR1) >> 3) & 15);
[NET] drivers/net: statistics cleanup #1 -- save memory and shrink code We now have struct net_device_stats embedded in struct net_device, and the default ->get_stats() hook does the obvious thing for us. Run through drivers/net/* and remove the driver-local storage of statistics, and driver-local ->get_stats() hook where applicable. This was just the low-hanging fruit in drivers/net; plenty more drivers remain to be updated. [ Resolved conflicts with napi_struct changes and fix sunqe build regression... -DaveM ] Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-04 08:41:50 +08:00
dev->stats.rx_missed_errors++;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
hardware_init(dev);
num_tx_since_rx = 0;
break;
} else
break;
}
/* This following code fixes a rare (and very difficult to track down)
problem where the adapter forgets its ethernet address. */
{
int i;
for (i = 0; i < 6; i++)
write_reg_byte(ioaddr, PAR0 + i, dev->dev_addr[i]);
#if 0 && defined(TIMED_CHECKER)
mod_timer(&lp->timer, jiffies + TIMED_CHECKER);
#endif
}
/* Tell the adapter that it can go back to using the output line as IRQ. */
write_reg(ioaddr, CMR2, CMR2_IRQOUT);
/* Enable the physical interrupt line, which is sure to be low until.. */
outb(Ctrl_SelData + Ctrl_IRQEN, ioaddr + PAR_CONTROL);
/* .. we enable the interrupt sources. */
write_reg(ioaddr, IMR, ISR_RxOK | ISR_TxErr | ISR_TxOK);
write_reg_high(ioaddr, IMR, ISRh_RxErr); /* Hmmm, really needed? */
spin_unlock(&lp->lock);
if (net_debug > 5) printk("exiting interrupt.\n");
return IRQ_RETVAL(handled);
}
#ifdef TIMED_CHECKER
/* This following code fixes a rare (and very difficult to track down)
problem where the adapter forgets its ethernet address. */
static void atp_timed_checker(unsigned long data)
{
struct net_device *dev = (struct net_device *)data;
long ioaddr = dev->base_addr;
struct net_local *lp = netdev_priv(dev);
int tickssofar = jiffies - lp->last_rx_time;
int i;
spin_lock(&lp->lock);
if (tickssofar > 2*HZ) {
#if 1
for (i = 0; i < 6; i++)
write_reg_byte(ioaddr, PAR0 + i, dev->dev_addr[i]);
lp->last_rx_time = jiffies;
#else
for (i = 0; i < 6; i++)
if (read_cmd_byte(ioaddr, PAR0 + i) != atp_timed_dev->dev_addr[i])
{
struct net_local *lp = netdev_priv(atp_timed_dev);
write_reg_byte(ioaddr, PAR0 + i, atp_timed_dev->dev_addr[i]);
if (i == 2)
[NET] drivers/net: statistics cleanup #1 -- save memory and shrink code We now have struct net_device_stats embedded in struct net_device, and the default ->get_stats() hook does the obvious thing for us. Run through drivers/net/* and remove the driver-local storage of statistics, and driver-local ->get_stats() hook where applicable. This was just the low-hanging fruit in drivers/net; plenty more drivers remain to be updated. [ Resolved conflicts with napi_struct changes and fix sunqe build regression... -DaveM ] Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-04 08:41:50 +08:00
dev->stats.tx_errors++;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
else if (i == 3)
[NET] drivers/net: statistics cleanup #1 -- save memory and shrink code We now have struct net_device_stats embedded in struct net_device, and the default ->get_stats() hook does the obvious thing for us. Run through drivers/net/* and remove the driver-local storage of statistics, and driver-local ->get_stats() hook where applicable. This was just the low-hanging fruit in drivers/net; plenty more drivers remain to be updated. [ Resolved conflicts with napi_struct changes and fix sunqe build regression... -DaveM ] Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-04 08:41:50 +08:00
dev->stats.tx_dropped++;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
else if (i == 4)
[NET] drivers/net: statistics cleanup #1 -- save memory and shrink code We now have struct net_device_stats embedded in struct net_device, and the default ->get_stats() hook does the obvious thing for us. Run through drivers/net/* and remove the driver-local storage of statistics, and driver-local ->get_stats() hook where applicable. This was just the low-hanging fruit in drivers/net; plenty more drivers remain to be updated. [ Resolved conflicts with napi_struct changes and fix sunqe build regression... -DaveM ] Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-04 08:41:50 +08:00
dev->stats.collisions++;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
else
[NET] drivers/net: statistics cleanup #1 -- save memory and shrink code We now have struct net_device_stats embedded in struct net_device, and the default ->get_stats() hook does the obvious thing for us. Run through drivers/net/* and remove the driver-local storage of statistics, and driver-local ->get_stats() hook where applicable. This was just the low-hanging fruit in drivers/net; plenty more drivers remain to be updated. [ Resolved conflicts with napi_struct changes and fix sunqe build regression... -DaveM ] Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-04 08:41:50 +08:00
dev->stats.rx_errors++;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
}
#endif
}
spin_unlock(&lp->lock);
lp->timer.expires = jiffies + TIMED_CHECKER;
add_timer(&lp->timer);
}
#endif
/* We have a good packet(s), get it/them out of the buffers. */
static void net_rx(struct net_device *dev)
{
struct net_local *lp = netdev_priv(dev);
long ioaddr = dev->base_addr;
struct rx_header rx_head;
/* Process the received packet. */
outb(EOC+MAR, ioaddr + PAR_DATA);
read_block(ioaddr, 8, (unsigned char*)&rx_head, dev->if_port);
if (net_debug > 5)
printk(KERN_DEBUG " rx_count %04x %04x %04x %04x..", rx_head.pad,
rx_head.rx_count, rx_head.rx_status, rx_head.cur_addr);
if ((rx_head.rx_status & 0x77) != 0x01) {
[NET] drivers/net: statistics cleanup #1 -- save memory and shrink code We now have struct net_device_stats embedded in struct net_device, and the default ->get_stats() hook does the obvious thing for us. Run through drivers/net/* and remove the driver-local storage of statistics, and driver-local ->get_stats() hook where applicable. This was just the low-hanging fruit in drivers/net; plenty more drivers remain to be updated. [ Resolved conflicts with napi_struct changes and fix sunqe build regression... -DaveM ] Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-04 08:41:50 +08:00
dev->stats.rx_errors++;
if (rx_head.rx_status & 0x0004) dev->stats.rx_frame_errors++;
else if (rx_head.rx_status & 0x0002) dev->stats.rx_crc_errors++;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
if (net_debug > 3)
printk(KERN_DEBUG "%s: Unknown ATP Rx error %04x.\n",
dev->name, rx_head.rx_status);
if (rx_head.rx_status & 0x0020) {
[NET] drivers/net: statistics cleanup #1 -- save memory and shrink code We now have struct net_device_stats embedded in struct net_device, and the default ->get_stats() hook does the obvious thing for us. Run through drivers/net/* and remove the driver-local storage of statistics, and driver-local ->get_stats() hook where applicable. This was just the low-hanging fruit in drivers/net; plenty more drivers remain to be updated. [ Resolved conflicts with napi_struct changes and fix sunqe build regression... -DaveM ] Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-04 08:41:50 +08:00
dev->stats.rx_fifo_errors++;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
write_reg_high(ioaddr, CMR1, CMR1h_TxENABLE);
write_reg_high(ioaddr, CMR1, CMR1h_RxENABLE | CMR1h_TxENABLE);
} else if (rx_head.rx_status & 0x0050)
hardware_init(dev);
return;
} else {
/* Malloc up new buffer. The "-4" omits the FCS (CRC). */
int pkt_len = (rx_head.rx_count & 0x7ff) - 4;
struct sk_buff *skb;
skb = dev_alloc_skb(pkt_len + 2);
if (skb == NULL) {
printk(KERN_ERR "%s: Memory squeeze, dropping packet.\n",
dev->name);
[NET] drivers/net: statistics cleanup #1 -- save memory and shrink code We now have struct net_device_stats embedded in struct net_device, and the default ->get_stats() hook does the obvious thing for us. Run through drivers/net/* and remove the driver-local storage of statistics, and driver-local ->get_stats() hook where applicable. This was just the low-hanging fruit in drivers/net; plenty more drivers remain to be updated. [ Resolved conflicts with napi_struct changes and fix sunqe build regression... -DaveM ] Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-04 08:41:50 +08:00
dev->stats.rx_dropped++;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
goto done;
}
skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */
read_block(ioaddr, pkt_len, skb_put(skb,pkt_len), dev->if_port);
skb->protocol = eth_type_trans(skb, dev);
netif_rx(skb);
dev->last_rx = jiffies;
[NET] drivers/net: statistics cleanup #1 -- save memory and shrink code We now have struct net_device_stats embedded in struct net_device, and the default ->get_stats() hook does the obvious thing for us. Run through drivers/net/* and remove the driver-local storage of statistics, and driver-local ->get_stats() hook where applicable. This was just the low-hanging fruit in drivers/net; plenty more drivers remain to be updated. [ Resolved conflicts with napi_struct changes and fix sunqe build regression... -DaveM ] Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-04 08:41:50 +08:00
dev->stats.rx_packets++;
dev->stats.rx_bytes += pkt_len;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
}
done:
write_reg(ioaddr, CMR1, CMR1_NextPkt);
lp->last_rx_time = jiffies;
return;
}
static void read_block(long ioaddr, int length, unsigned char *p, int data_mode)
{
if (data_mode <= 3) { /* Mode 0 or 1 */
outb(Ctrl_LNibRead, ioaddr + PAR_CONTROL);
outb(length == 8 ? RdAddr | HNib | MAR : RdAddr | MAR,
ioaddr + PAR_DATA);
if (data_mode <= 1) { /* Mode 0 or 1 */
do *p++ = read_byte_mode0(ioaddr); while (--length > 0);
} else /* Mode 2 or 3 */
do *p++ = read_byte_mode2(ioaddr); while (--length > 0);
} else if (data_mode <= 5)
do *p++ = read_byte_mode4(ioaddr); while (--length > 0);
else
do *p++ = read_byte_mode6(ioaddr); while (--length > 0);
outb(EOC+HNib+MAR, ioaddr + PAR_DATA);
outb(Ctrl_SelData, ioaddr + PAR_CONTROL);
}
/* The inverse routine to net_open(). */
static int
net_close(struct net_device *dev)
{
struct net_local *lp = netdev_priv(dev);
long ioaddr = dev->base_addr;
netif_stop_queue(dev);
del_timer_sync(&lp->timer);
/* Flush the Tx and disable Rx here. */
lp->addr_mode = CMR2h_OFF;
write_reg_high(ioaddr, CMR2, CMR2h_OFF);
/* Free the IRQ line. */
outb(0x00, ioaddr + PAR_CONTROL);
free_irq(dev->irq, dev);
/* Reset the ethernet hardware and activate the printer pass-through. */
write_reg_high(ioaddr, CMR1, CMR1h_RESET | CMR1h_MUX);
return 0;
}
/*
* Set or clear the multicast filter for this adapter.
*/
static void set_rx_mode_8002(struct net_device *dev)
{
struct net_local *lp = netdev_priv(dev);
long ioaddr = dev->base_addr;
[netdrvr] Drivers should not set IFF_* flag themselves Some hardware set promisc when they are requested to set IFF_ALLMULTI flag. It's ok, but if drivers set IFF_PROMISC flag when they set promisc, it will broken upper layer handle for promisc and allmulti. In addition, drivers can use their own hardware programming to make it. So do not allow drivers to set IFF_* flags. This is a general driver fix, so I didn't split it to pieces and send to specific driver maintainers. Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-22 13:13:12 +08:00
if (dev->mc_count > 0 || (dev->flags & (IFF_ALLMULTI|IFF_PROMISC)))
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
lp->addr_mode = CMR2h_PROMISC;
[netdrvr] Drivers should not set IFF_* flag themselves Some hardware set promisc when they are requested to set IFF_ALLMULTI flag. It's ok, but if drivers set IFF_PROMISC flag when they set promisc, it will broken upper layer handle for promisc and allmulti. In addition, drivers can use their own hardware programming to make it. So do not allow drivers to set IFF_* flags. This is a general driver fix, so I didn't split it to pieces and send to specific driver maintainers. Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-22 13:13:12 +08:00
else
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
lp->addr_mode = CMR2h_Normal;
write_reg_high(ioaddr, CMR2, lp->addr_mode);
}
static void set_rx_mode_8012(struct net_device *dev)
{
struct net_local *lp = netdev_priv(dev);
long ioaddr = dev->base_addr;
unsigned char new_mode, mc_filter[8]; /* Multicast hash filter */
int i;
if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
new_mode = CMR2h_PROMISC;
} else if ((dev->mc_count > 1000) || (dev->flags & IFF_ALLMULTI)) {
/* Too many to filter perfectly -- accept all multicasts. */
memset(mc_filter, 0xff, sizeof(mc_filter));
new_mode = CMR2h_Normal;
} else {
struct dev_mc_list *mclist;
memset(mc_filter, 0, sizeof(mc_filter));
for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
i++, mclist = mclist->next)
{
int filterbit = ether_crc_le(ETH_ALEN, mclist->dmi_addr) & 0x3f;
mc_filter[filterbit >> 5] |= 1 << (filterbit & 31);
}
new_mode = CMR2h_Normal;
}
lp->addr_mode = new_mode;
write_reg(ioaddr, CMR2, CMR2_IRQOUT | 0x04); /* Switch to page 1. */
for (i = 0; i < 8; i++)
write_reg_byte(ioaddr, i, mc_filter[i]);
if (net_debug > 2 || 1) {
lp->addr_mode = 1;
printk(KERN_DEBUG "%s: Mode %d, setting multicast filter to",
dev->name, lp->addr_mode);
for (i = 0; i < 8; i++)
printk(" %2.2x", mc_filter[i]);
printk(".\n");
}
write_reg_high(ioaddr, CMR2, lp->addr_mode);
write_reg(ioaddr, CMR2, CMR2_IRQOUT); /* Switch back to page 0 */
}
static int __init atp_init_module(void) {
if (debug) /* Emit version even if no cards detected. */
remove broken URLs from net drivers' output Remove broken URLs (www.scyld.com) from network drivers' logging output. URLs in comments and other strings are left intact. Signed-off-by: Markus Dahms <dahms@fh-brandenburg.de> Acked-by: Jesper Juhl <jesper.juhl@gmail.com> Acked-by: Alan Cox <alan@redhat.com> igned-off-by: Adrian Bunk <bunk@stusta.de>
2007-05-09 13:58:10 +08:00
printk(KERN_INFO "%s", version);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
return atp_init();
}
static void __exit atp_cleanup_module(void) {
struct net_device *next_dev;
while (root_atp_dev) {
netdevice: safe convert to netdev_priv() #part-1 We have some reasons to kill netdev->priv: 1. netdev->priv is equal to netdev_priv(). 2. netdev_priv() wraps the calculation of netdev->priv's offset, obviously netdev_priv() is more flexible than netdev->priv. But we cann't kill netdev->priv, because so many drivers reference to it directly. This patch is a safe convert for netdev->priv to netdev_priv(netdev). Since all of the netdev->priv is only for read. But it is too big to be sent in one mail. I split it to 4 parts and make every part smaller than 100,000 bytes, which is max size allowed by vger. Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-13 15:37:49 +08:00
struct net_local *atp_local = netdev_priv(root_atp_dev);
next_dev = atp_local->next_module;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
unregister_netdev(root_atp_dev);
/* No need to release_region(), since we never snarf it. */
free_netdev(root_atp_dev);
root_atp_dev = next_dev;
}
}
module_init(atp_init_module);
module_exit(atp_cleanup_module);