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OpenCloudOS-Kernel/drivers/net/tulip/xircom_cb.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
/*
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +08:00
* xircom_cb: A driver for the (tulip-like) Xircom Cardbus ethernet cards
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
*
* This software is (C) by the respective authors, and licensed under the GPL
* License.
*
* Written by Arjan van de Ven for Red Hat, Inc.
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +08:00
* Based on work by Jeff Garzik, Doug Ledford and Donald Becker
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
*
* This software may be used and distributed according to the terms
* of the GNU General Public License, incorporated herein by reference.
*
*
* $Id: xircom_cb.c,v 1.33 2001/03/19 14:02:07 arjanv Exp $
*/
#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/pci.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/ethtool.h>
#include <linux/bitops.h>
#include <asm/uaccess.h>
#include <asm/io.h>
[PATCH] missing include of asm/irq.h in drivers/net Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2005-12-06 18:53:04 +08:00
#ifdef CONFIG_NET_POLL_CONTROLLER
#include <asm/irq.h>
#endif
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
#ifdef DEBUG
#define enter(x) printk("Enter: %s, %s line %i\n",x,__FILE__,__LINE__)
#define leave(x) printk("Leave: %s, %s line %i\n",x,__FILE__,__LINE__)
#else
#define enter(x) do {} while (0)
#define leave(x) do {} while (0)
#endif
MODULE_DESCRIPTION("Xircom Cardbus ethernet driver");
MODULE_AUTHOR("Arjan van de Ven <arjanv@redhat.com>");
MODULE_LICENSE("GPL");
/* IO registers on the card, offsets */
#define CSR0 0x00
#define CSR1 0x08
#define CSR2 0x10
#define CSR3 0x18
#define CSR4 0x20
#define CSR5 0x28
#define CSR6 0x30
#define CSR7 0x38
#define CSR8 0x40
#define CSR9 0x48
#define CSR10 0x50
#define CSR11 0x58
#define CSR12 0x60
#define CSR13 0x68
#define CSR14 0x70
#define CSR15 0x78
#define CSR16 0x80
/* PCI registers */
#define PCI_POWERMGMT 0x40
/* Offsets of the buffers within the descriptor pages, in bytes */
#define NUMDESCRIPTORS 4
static int bufferoffsets[NUMDESCRIPTORS] = {128,2048,4096,6144};
struct xircom_private {
/* Send and receive buffers, kernel-addressable and dma addressable forms */
unsigned int *rx_buffer;
unsigned int *tx_buffer;
dma_addr_t rx_dma_handle;
dma_addr_t tx_dma_handle;
struct sk_buff *tx_skb[4];
unsigned long io_port;
int open;
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +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
/* transmit_used is the rotating counter that indicates which transmit
descriptor has to be used next */
int transmit_used;
/* Spinlock to serialize register operations.
It must be helt while manipulating the following registers:
CSR0, CSR6, CSR7, CSR9, CSR10, CSR15
*/
spinlock_t lock;
struct pci_dev *pdev;
struct net_device *dev;
struct net_device_stats stats;
};
/* Function prototypes */
static int xircom_probe(struct pci_dev *pdev, const struct pci_device_id *id);
static void xircom_remove(struct pci_dev *pdev);
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 xircom_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
static int xircom_start_xmit(struct sk_buff *skb, struct net_device *dev);
static int xircom_open(struct net_device *dev);
static int xircom_close(struct net_device *dev);
static void xircom_up(struct xircom_private *card);
static struct net_device_stats *xircom_get_stats(struct net_device *dev);
[PATCH] Correct xircom_cb use of CONFIG_NET_POLL_CONTROLLER xircom_cb.c does #if CONFIG_NET_POLL_CONTROLLER instead of #ifdef, resulting in drivers/net/tulip/xircom_cb.c:120:5: warning: "CONFIG_NET_POLL_CONTROLLER" is not defined. Signed-off-by: Keith Owens <kaos@sgi.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-09-13 13:05:13 +08:00
#ifdef CONFIG_NET_POLL_CONTROLLER
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 xircom_poll_controller(struct net_device *dev);
#endif
static void investigate_read_descriptor(struct net_device *dev,struct xircom_private *card, int descnr, unsigned int bufferoffset);
static void investigate_write_descriptor(struct net_device *dev, struct xircom_private *card, int descnr, unsigned int bufferoffset);
static void read_mac_address(struct xircom_private *card);
static void transceiver_voodoo(struct xircom_private *card);
static void initialize_card(struct xircom_private *card);
static void trigger_transmit(struct xircom_private *card);
static void trigger_receive(struct xircom_private *card);
static void setup_descriptors(struct xircom_private *card);
static void remove_descriptors(struct xircom_private *card);
static int link_status_changed(struct xircom_private *card);
static void activate_receiver(struct xircom_private *card);
static void deactivate_receiver(struct xircom_private *card);
static void activate_transmitter(struct xircom_private *card);
static void deactivate_transmitter(struct xircom_private *card);
static void enable_transmit_interrupt(struct xircom_private *card);
static void enable_receive_interrupt(struct xircom_private *card);
static void enable_link_interrupt(struct xircom_private *card);
static void disable_all_interrupts(struct xircom_private *card);
static int link_status(struct xircom_private *card);
static struct pci_device_id xircom_pci_table[] = {
{0x115D, 0x0003, PCI_ANY_ID, PCI_ANY_ID,},
{0,},
};
MODULE_DEVICE_TABLE(pci, xircom_pci_table);
static struct pci_driver xircom_ops = {
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +08:00
.name = "xircom_cb",
.id_table = xircom_pci_table,
.probe = xircom_probe,
.remove = xircom_remove,
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
.suspend =NULL,
.resume =NULL
};
#ifdef DEBUG
static void print_binary(unsigned int number)
{
int i,i2;
char buffer[64];
memset(buffer,0,64);
i2=0;
for (i=31;i>=0;i--) {
if (number & (1<<i))
buffer[i2++]='1';
else
buffer[i2++]='0';
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +08:00
if ((i&3)==0)
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
buffer[i2++]=' ';
}
printk("%s\n",buffer);
}
#endif
static void netdev_get_drvinfo(struct net_device *dev,
struct ethtool_drvinfo *info)
{
struct xircom_private *private = netdev_priv(dev);
strcpy(info->driver, "xircom_cb");
strcpy(info->bus_info, pci_name(private->pdev));
}
drivers/net: const-ify ethtool_ops declarations Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-14 02:30:00 +08:00
static const struct ethtool_ops netdev_ethtool_ops = {
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
.get_drvinfo = netdev_get_drvinfo,
};
/* xircom_probe is the code that gets called on device insertion.
it sets up the hardware and registers the device to the networklayer.
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +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
TODO: Send 1 or 2 "dummy" packets here as the card seems to discard the
first two packets that get send, and pump hates that.
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +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
*/
static int __devinit xircom_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
struct net_device *dev = NULL;
struct xircom_private *private;
unsigned char chip_rev;
unsigned long flags;
unsigned short tmp16;
enter("xircom_probe");
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +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
/* First do the PCI initialisation */
if (pci_enable_device(pdev))
return -ENODEV;
/* disable all powermanagement */
pci_write_config_dword(pdev, PCI_POWERMGMT, 0x0000);
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +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
pci_set_master(pdev); /* Why isn't this done by pci_enable_device ?*/
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +08:00
/* clear PCI status, if any */
pci_read_config_word (pdev,PCI_STATUS, &tmp16);
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
pci_write_config_word (pdev, PCI_STATUS,tmp16);
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +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
pci_read_config_byte(pdev, PCI_REVISION_ID, &chip_rev);
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +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
if (!request_region(pci_resource_start(pdev, 0), 128, "xircom_cb")) {
printk(KERN_ERR "xircom_probe: failed to allocate io-region\n");
return -ENODEV;
}
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +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
Before changing the hardware, allocate the memory.
This way, we can fail gracefully if not enough memory
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +08:00
is available.
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
*/
dev = alloc_etherdev(sizeof(struct xircom_private));
if (!dev) {
printk(KERN_ERR "xircom_probe: failed to allocate etherdev\n");
goto device_fail;
}
private = netdev_priv(dev);
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +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
/* Allocate the send/receive buffers */
private->rx_buffer = pci_alloc_consistent(pdev,8192,&private->rx_dma_handle);
if (private->rx_buffer == NULL) {
printk(KERN_ERR "xircom_probe: no memory for rx buffer \n");
goto rx_buf_fail;
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +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
private->tx_buffer = pci_alloc_consistent(pdev,8192,&private->tx_dma_handle);
if (private->tx_buffer == NULL) {
printk(KERN_ERR "xircom_probe: no memory for tx buffer \n");
goto tx_buf_fail;
}
SET_MODULE_OWNER(dev);
SET_NETDEV_DEV(dev, &pdev->dev);
private->dev = dev;
private->pdev = pdev;
private->io_port = pci_resource_start(pdev, 0);
spin_lock_init(&private->lock);
dev->irq = pdev->irq;
dev->base_addr = private->io_port;
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +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
initialize_card(private);
read_mac_address(private);
setup_descriptors(private);
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +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
dev->open = &xircom_open;
dev->hard_start_xmit = &xircom_start_xmit;
dev->stop = &xircom_close;
dev->get_stats = &xircom_get_stats;
dev->priv = private;
#ifdef CONFIG_NET_POLL_CONTROLLER
dev->poll_controller = &xircom_poll_controller;
#endif
SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
pci_set_drvdata(pdev, dev);
if (register_netdev(dev)) {
printk(KERN_ERR "xircom_probe: netdevice registration failed.\n");
goto reg_fail;
}
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +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
printk(KERN_INFO "%s: Xircom cardbus revision %i at irq %i \n", dev->name, chip_rev, pdev->irq);
/* start the transmitter to get a heartbeat */
/* TODO: send 2 dummy packets here */
transceiver_voodoo(private);
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +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
spin_lock_irqsave(&private->lock,flags);
activate_transmitter(private);
activate_receiver(private);
spin_unlock_irqrestore(&private->lock,flags);
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +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
trigger_receive(private);
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +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
leave("xircom_probe");
return 0;
reg_fail:
kfree(private->tx_buffer);
tx_buf_fail:
kfree(private->rx_buffer);
rx_buf_fail:
free_netdev(dev);
device_fail:
return -ENODEV;
}
/*
xircom_remove is called on module-unload or on device-eject.
it unregisters the irq, io-region and network device.
Interrupts and such are already stopped in the "ifconfig ethX down"
code.
*/
static void __devexit xircom_remove(struct pci_dev *pdev)
{
struct net_device *dev = pci_get_drvdata(pdev);
struct xircom_private *card = netdev_priv(dev);
enter("xircom_remove");
pci_free_consistent(pdev,8192,card->rx_buffer,card->rx_dma_handle);
pci_free_consistent(pdev,8192,card->tx_buffer,card->tx_dma_handle);
release_region(dev->base_addr, 128);
unregister_netdev(dev);
free_netdev(dev);
pci_set_drvdata(pdev, NULL);
leave("xircom_remove");
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
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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
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 xircom_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
{
struct net_device *dev = (struct net_device *) dev_instance;
struct xircom_private *card = netdev_priv(dev);
unsigned int status;
int i;
enter("xircom_interrupt\n");
spin_lock(&card->lock);
status = inl(card->io_port+CSR5);
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
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#ifdef DEBUG
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
print_binary(status);
printk("tx status 0x%08x 0x%08x \n",card->tx_buffer[0],card->tx_buffer[4]);
printk("rx status 0x%08x 0x%08x \n",card->rx_buffer[0],card->rx_buffer[4]);
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
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#endif
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
/* Handle shared irq and hotplug */
if (status == 0 || status == 0xffffffff) {
spin_unlock(&card->lock);
return IRQ_NONE;
}
if (link_status_changed(card)) {
int newlink;
printk(KERN_DEBUG "xircom_cb: Link status has changed \n");
newlink = link_status(card);
printk(KERN_INFO "xircom_cb: Link is %i mbit \n",newlink);
if (newlink)
netif_carrier_on(dev);
else
netif_carrier_off(dev);
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
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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
}
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
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/* Clear all remaining interrupts */
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
status |= 0xffffffff; /* FIXME: make this clear only the
real existing bits */
outl(status,card->io_port+CSR5);
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
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for (i=0;i<NUMDESCRIPTORS;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
investigate_write_descriptor(dev,card,i,bufferoffsets[i]);
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
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for (i=0;i<NUMDESCRIPTORS;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
investigate_read_descriptor(dev,card,i,bufferoffsets[i]);
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
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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
spin_unlock(&card->lock);
leave("xircom_interrupt");
return IRQ_HANDLED;
}
static int xircom_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct xircom_private *card;
unsigned long flags;
int nextdescriptor;
int desc;
enter("xircom_start_xmit");
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
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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
card = netdev_priv(dev);
spin_lock_irqsave(&card->lock,flags);
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
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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
/* First see if we can free some descriptors */
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
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for (desc=0;desc<NUMDESCRIPTORS;desc++)
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
investigate_write_descriptor(dev,card,desc,bufferoffsets[desc]);
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
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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
nextdescriptor = (card->transmit_used +1) % (NUMDESCRIPTORS);
desc = card->transmit_used;
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
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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
/* only send the packet if the descriptor is free */
if (card->tx_buffer[4*desc]==0) {
/* Copy the packet data; zero the memory first as the card
sometimes sends more than you ask it to. */
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +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
memset(&card->tx_buffer[bufferoffsets[desc]/4],0,1536);
memcpy(&(card->tx_buffer[bufferoffsets[desc]/4]),skb->data,skb->len);
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
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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
/* FIXME: The specification tells us that the length we send HAS to be a multiple of
4 bytes. */
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
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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
card->tx_buffer[4*desc+1] = skb->len;
if (desc == NUMDESCRIPTORS-1)
card->tx_buffer[4*desc+1] |= (1<<25); /* bit 25: last descriptor of the ring */
card->tx_buffer[4*desc+1] |= 0xF0000000;
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
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/* 0xF0... means want interrupts*/
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
card->tx_skb[desc] = skb;
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
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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
wmb();
/* This gives the descriptor to the card */
card->tx_buffer[4*desc] = 0x80000000;
trigger_transmit(card);
if (((int)card->tx_buffer[nextdescriptor*4])<0) { /* next descriptor is occupied... */
netif_stop_queue(dev);
}
card->transmit_used = nextdescriptor;
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
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leave("xircom-start_xmit - sent");
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
spin_unlock_irqrestore(&card->lock,flags);
return 0;
}
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
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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
/* Uh oh... no free descriptor... drop the packet */
netif_stop_queue(dev);
spin_unlock_irqrestore(&card->lock,flags);
trigger_transmit(card);
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
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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
return -EIO;
}
static int xircom_open(struct net_device *dev)
{
struct xircom_private *xp = netdev_priv(dev);
int retval;
enter("xircom_open");
printk(KERN_INFO "xircom cardbus adaptor found, registering as %s, using irq %i \n",dev->name,dev->irq);
[PATCH] irq-flags: drivers/net: Use the new IRQF_ constants Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: "David S. Miller" <davem@davemloft.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-02 10:29:39 +08:00
retval = request_irq(dev->irq, &xircom_interrupt, IRQF_SHARED, dev->name, dev);
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!
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if (retval) {
leave("xircom_open - No IRQ");
return retval;
}
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
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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
xircom_up(xp);
xp->open = 1;
leave("xircom_open");
return 0;
}
static int xircom_close(struct net_device *dev)
{
struct xircom_private *card;
unsigned long flags;
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
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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
enter("xircom_close");
card = netdev_priv(dev);
netif_stop_queue(dev); /* we don't want new packets */
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
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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
spin_lock_irqsave(&card->lock,flags);
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
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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
disable_all_interrupts(card);
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
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#if 0
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
/* We can enable this again once we send dummy packets on ifconfig ethX up */
deactivate_receiver(card);
deactivate_transmitter(card);
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
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#endif
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
remove_descriptors(card);
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
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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
spin_unlock_irqrestore(&card->lock,flags);
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
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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
card->open = 0;
free_irq(dev->irq,dev);
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
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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
leave("xircom_close");
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
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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
return 0;
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +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
}
static struct net_device_stats *xircom_get_stats(struct net_device *dev)
{
struct xircom_private *card = netdev_priv(dev);
return &card->stats;
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +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
#ifdef CONFIG_NET_POLL_CONTROLLER
static void xircom_poll_controller(struct net_device *dev)
{
disable_irq(dev->irq);
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
xircom_interrupt(dev->irq, dev);
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
enable_irq(dev->irq);
}
#endif
static void initialize_card(struct xircom_private *card)
{
unsigned int val;
unsigned long flags;
enter("initialize_card");
spin_lock_irqsave(&card->lock, flags);
/* First: reset the card */
val = inl(card->io_port + CSR0);
val |= 0x01; /* Software reset */
outl(val, card->io_port + CSR0);
udelay(100); /* give the card some time to reset */
val = inl(card->io_port + CSR0);
val &= ~0x01; /* disable Software reset */
outl(val, card->io_port + CSR0);
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +08:00
val = 0; /* Value 0x00 is a safe and conservative value
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
for the PCI configuration settings */
outl(val, card->io_port + CSR0);
disable_all_interrupts(card);
deactivate_receiver(card);
deactivate_transmitter(card);
spin_unlock_irqrestore(&card->lock, flags);
leave("initialize_card");
}
/*
trigger_transmit causes the card to check for frames to be transmitted.
This is accomplished by writing to the CSR1 port. The documentation
claims that the act of writing is sufficient and that the value is
ignored; I chose zero.
*/
static void trigger_transmit(struct xircom_private *card)
{
unsigned int val;
enter("trigger_transmit");
val = 0;
outl(val, card->io_port + CSR1);
leave("trigger_transmit");
}
/*
trigger_receive causes the card to check for empty frames in the
descriptor list in which packets can be received.
This is accomplished by writing to the CSR2 port. The documentation
claims that the act of writing is sufficient and that the value is
ignored; I chose zero.
*/
static void trigger_receive(struct xircom_private *card)
{
unsigned int val;
enter("trigger_receive");
val = 0;
outl(val, card->io_port + CSR2);
leave("trigger_receive");
}
/*
setup_descriptors initializes the send and receive buffers to be valid
descriptors and programs the addresses into the card.
*/
static void setup_descriptors(struct xircom_private *card)
{
unsigned int val;
unsigned int address;
int i;
enter("setup_descriptors");
[PATCH] BUG_ON() Conversion in net/tulip/xircom_cb.c hi, this changes if() BUG(); constructs to BUG_ON() which is cleaner and can better optimized away Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-27 05:02:51 +08:00
BUG_ON(card->rx_buffer == NULL);
BUG_ON(card->tx_buffer == NULL);
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
/* Receive descriptors */
memset(card->rx_buffer, 0, 128); /* clear the descriptors */
for (i=0;i<NUMDESCRIPTORS;i++ ) {
/* Rx Descr0: It's empty, let the card own it, no errors -> 0x80000000 */
card->rx_buffer[i*4 + 0] = 0x80000000;
/* Rx Descr1: buffer 1 is 1536 bytes, buffer 2 is 0 bytes */
card->rx_buffer[i*4 + 1] = 1536;
if (i==NUMDESCRIPTORS-1)
card->rx_buffer[i*4 + 1] |= (1 << 25); /* bit 25 is "last descriptor" */
/* Rx Descr2: address of the buffer
we store the buffer at the 2nd half of the page */
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +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
address = (unsigned long) card->rx_dma_handle;
card->rx_buffer[i*4 + 2] = cpu_to_le32(address + bufferoffsets[i]);
/* Rx Desc3: address of 2nd buffer -> 0 */
card->rx_buffer[i*4 + 3] = 0;
}
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +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
wmb();
/* Write the receive descriptor ring address to the card */
address = (unsigned long) card->rx_dma_handle;
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +08:00
val = cpu_to_le32(address);
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
outl(val, card->io_port + CSR3); /* Receive descr list address */
/* transmit descriptors */
memset(card->tx_buffer, 0, 128); /* clear the descriptors */
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +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
for (i=0;i<NUMDESCRIPTORS;i++ ) {
/* Tx Descr0: Empty, we own it, no errors -> 0x00000000 */
card->tx_buffer[i*4 + 0] = 0x00000000;
/* Tx Descr1: buffer 1 is 1536 bytes, buffer 2 is 0 bytes */
card->tx_buffer[i*4 + 1] = 1536;
if (i==NUMDESCRIPTORS-1)
card->tx_buffer[i*4 + 1] |= (1 << 25); /* bit 25 is "last descriptor" */
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +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
/* Tx Descr2: address of the buffer
we store the buffer at the 2nd half of the page */
address = (unsigned long) card->tx_dma_handle;
card->tx_buffer[i*4 + 2] = cpu_to_le32(address + bufferoffsets[i]);
/* Tx Desc3: address of 2nd buffer -> 0 */
card->tx_buffer[i*4 + 3] = 0;
}
wmb();
/* wite the transmit descriptor ring to the card */
address = (unsigned long) card->tx_dma_handle;
val =cpu_to_le32(address);
outl(val, card->io_port + CSR4); /* xmit descr list address */
leave("setup_descriptors");
}
/*
remove_descriptors informs the card the descriptors are no longer
valid by setting the address in the card to 0x00.
*/
static void remove_descriptors(struct xircom_private *card)
{
unsigned int val;
enter("remove_descriptors");
val = 0;
outl(val, card->io_port + CSR3); /* Receive descriptor address */
outl(val, card->io_port + CSR4); /* Send descriptor address */
leave("remove_descriptors");
}
/*
link_status_changed returns 1 if the card has indicated that
the link status has changed. The new link status has to be read from CSR12.
This function also clears the status-bit.
*/
static int link_status_changed(struct xircom_private *card)
{
unsigned int val;
enter("link_status_changed");
val = inl(card->io_port + CSR5); /* Status register */
if ((val & (1 << 27)) == 0) { /* no change */
leave("link_status_changed - nochange");
return 0;
}
/* clear the event by writing a 1 to the bit in the
status register. */
val = (1 << 27);
outl(val, card->io_port + CSR5);
leave("link_status_changed - changed");
return 1;
}
/*
transmit_active returns 1 if the transmitter on the card is
in a non-stopped state.
*/
static int transmit_active(struct xircom_private *card)
{
unsigned int val;
enter("transmit_active");
val = inl(card->io_port + CSR5); /* Status register */
if ((val & (7 << 20)) == 0) { /* transmitter disabled */
leave("transmit_active - inactive");
return 0;
}
leave("transmit_active - active");
return 1;
}
/*
receive_active returns 1 if the receiver on the card is
in a non-stopped state.
*/
static int receive_active(struct xircom_private *card)
{
unsigned int val;
enter("receive_active");
val = inl(card->io_port + CSR5); /* Status register */
if ((val & (7 << 17)) == 0) { /* receiver disabled */
leave("receive_active - inactive");
return 0;
}
leave("receive_active - active");
return 1;
}
/*
activate_receiver enables the receiver on the card.
Before being allowed to active the receiver, the receiver
must be completely de-activated. To achieve this,
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +08:00
this code actually disables the receiver first; then it waits for the
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
receiver to become inactive, then it activates the receiver and then
it waits for the receiver to be active.
must be called with the lock held and interrupts disabled.
*/
static void activate_receiver(struct xircom_private *card)
{
unsigned int val;
int counter;
enter("activate_receiver");
val = inl(card->io_port + CSR6); /* Operation mode */
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +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
/* If the "active" bit is set and the receiver is already
active, no need to do the expensive thing */
if ((val&2) && (receive_active(card)))
return;
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +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
val = val & ~2; /* disable the receiver */
outl(val, card->io_port + CSR6);
counter = 10;
while (counter > 0) {
if (!receive_active(card))
break;
/* wait a while */
udelay(50);
counter--;
if (counter <= 0)
printk(KERN_ERR "xircom_cb: Receiver failed to deactivate\n");
}
/* enable the receiver */
val = inl(card->io_port + CSR6); /* Operation mode */
val = val | 2; /* enable the receiver */
outl(val, card->io_port + CSR6);
/* now wait for the card to activate again */
counter = 10;
while (counter > 0) {
if (receive_active(card))
break;
/* wait a while */
udelay(50);
counter--;
if (counter <= 0)
printk(KERN_ERR "xircom_cb: Receiver failed to re-activate\n");
}
leave("activate_receiver");
}
/*
deactivate_receiver disables the receiver on the card.
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +08:00
To achieve this this code disables the receiver first;
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
then it waits for the receiver to become inactive.
must be called with the lock held and interrupts disabled.
*/
static void deactivate_receiver(struct xircom_private *card)
{
unsigned int val;
int counter;
enter("deactivate_receiver");
val = inl(card->io_port + CSR6); /* Operation mode */
val = val & ~2; /* disable the receiver */
outl(val, card->io_port + CSR6);
counter = 10;
while (counter > 0) {
if (!receive_active(card))
break;
/* wait a while */
udelay(50);
counter--;
if (counter <= 0)
printk(KERN_ERR "xircom_cb: Receiver failed to deactivate\n");
}
leave("deactivate_receiver");
}
/*
activate_transmitter enables the transmitter on the card.
Before being allowed to active the transmitter, the transmitter
must be completely de-activated. To achieve this,
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +08:00
this code actually disables the transmitter first; then it waits for the
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
transmitter to become inactive, then it activates the transmitter and then
it waits for the transmitter to be active again.
must be called with the lock held and interrupts disabled.
*/
static void activate_transmitter(struct xircom_private *card)
{
unsigned int val;
int counter;
enter("activate_transmitter");
val = inl(card->io_port + CSR6); /* Operation mode */
/* If the "active" bit is set and the receiver is already
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +08:00
active, no need to do the expensive thing */
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 ((val&(1<<13)) && (transmit_active(card)))
return;
val = val & ~(1 << 13); /* disable the transmitter */
outl(val, card->io_port + CSR6);
counter = 10;
while (counter > 0) {
if (!transmit_active(card))
break;
/* wait a while */
udelay(50);
counter--;
if (counter <= 0)
printk(KERN_ERR "xircom_cb: Transmitter failed to deactivate\n");
}
/* enable the transmitter */
val = inl(card->io_port + CSR6); /* Operation mode */
val = val | (1 << 13); /* enable the transmitter */
outl(val, card->io_port + CSR6);
/* now wait for the card to activate again */
counter = 10;
while (counter > 0) {
if (transmit_active(card))
break;
/* wait a while */
udelay(50);
counter--;
if (counter <= 0)
printk(KERN_ERR "xircom_cb: Transmitter failed to re-activate\n");
}
leave("activate_transmitter");
}
/*
deactivate_transmitter disables the transmitter on the card.
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +08:00
To achieve this this code disables the transmitter first;
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
then it waits for the transmitter to become inactive.
must be called with the lock held and interrupts disabled.
*/
static void deactivate_transmitter(struct xircom_private *card)
{
unsigned int val;
int counter;
enter("deactivate_transmitter");
val = inl(card->io_port + CSR6); /* Operation mode */
val = val & ~2; /* disable the transmitter */
outl(val, card->io_port + CSR6);
counter = 20;
while (counter > 0) {
if (!transmit_active(card))
break;
/* wait a while */
udelay(50);
counter--;
if (counter <= 0)
printk(KERN_ERR "xircom_cb: Transmitter failed to deactivate\n");
}
leave("deactivate_transmitter");
}
/*
enable_transmit_interrupt enables the transmit interrupt
must be called with the lock held and interrupts disabled.
*/
static void enable_transmit_interrupt(struct xircom_private *card)
{
unsigned int val;
enter("enable_transmit_interrupt");
val = inl(card->io_port + CSR7); /* Interrupt enable register */
val |= 1; /* enable the transmit interrupt */
outl(val, card->io_port + CSR7);
leave("enable_transmit_interrupt");
}
/*
enable_receive_interrupt enables the receive interrupt
must be called with the lock held and interrupts disabled.
*/
static void enable_receive_interrupt(struct xircom_private *card)
{
unsigned int val;
enter("enable_receive_interrupt");
val = inl(card->io_port + CSR7); /* Interrupt enable register */
val = val | (1 << 6); /* enable the receive interrupt */
outl(val, card->io_port + CSR7);
leave("enable_receive_interrupt");
}
/*
enable_link_interrupt enables the link status change interrupt
must be called with the lock held and interrupts disabled.
*/
static void enable_link_interrupt(struct xircom_private *card)
{
unsigned int val;
enter("enable_link_interrupt");
val = inl(card->io_port + CSR7); /* Interrupt enable register */
val = val | (1 << 27); /* enable the link status chage interrupt */
outl(val, card->io_port + CSR7);
leave("enable_link_interrupt");
}
/*
disable_all_interrupts disables all interrupts
must be called with the lock held and interrupts disabled.
*/
static void disable_all_interrupts(struct xircom_private *card)
{
unsigned int val;
enter("enable_all_interrupts");
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +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
val = 0; /* disable all interrupts */
outl(val, card->io_port + CSR7);
leave("disable_all_interrupts");
}
/*
enable_common_interrupts enables several weird interrupts
must be called with the lock held and interrupts disabled.
*/
static void enable_common_interrupts(struct xircom_private *card)
{
unsigned int val;
enter("enable_link_interrupt");
val = inl(card->io_port + CSR7); /* Interrupt enable register */
val |= (1<<16); /* Normal Interrupt Summary */
val |= (1<<15); /* Abnormal Interrupt Summary */
val |= (1<<13); /* Fatal bus error */
val |= (1<<8); /* Receive Process Stopped */
val |= (1<<7); /* Receive Buffer Unavailable */
val |= (1<<5); /* Transmit Underflow */
val |= (1<<2); /* Transmit Buffer Unavailable */
val |= (1<<1); /* Transmit Process Stopped */
outl(val, card->io_port + CSR7);
leave("enable_link_interrupt");
}
/*
enable_promisc starts promisc mode
must be called with the lock held and interrupts disabled.
*/
static int enable_promisc(struct xircom_private *card)
{
unsigned int val;
enter("enable_promisc");
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +08:00
val = inl(card->io_port + CSR6);
val = val | (1 << 6);
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
outl(val, card->io_port + CSR6);
leave("enable_promisc");
return 1;
}
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +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
link_status() checks the the links status and will return 0 for no link, 10 for 10mbit link and 100 for.. guess what.
Must be called in locked state with interrupts disabled
*/
static int link_status(struct xircom_private *card)
{
unsigned int val;
enter("link_status");
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
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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
val = inb(card->io_port + CSR12);
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +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
if (!(val&(1<<2))) /* bit 2 is 0 for 10mbit link, 1 for not an 10mbit link */
return 10;
if (!(val&(1<<1))) /* bit 1 is 0 for 100mbit link, 1 for not an 100mbit link */
return 100;
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
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/* If we get here -> no link at all */
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
leave("link_status");
return 0;
}
/*
read_mac_address() reads the MAC address from the NIC and stores it in the "dev" structure.
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +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
This function will take the spinlock itself and can, as a result, not be called with the lock helt.
*/
static void read_mac_address(struct xircom_private *card)
{
unsigned char j, tuple, link, data_id, data_count;
unsigned long flags;
int i;
enter("read_mac_address");
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +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
spin_lock_irqsave(&card->lock, flags);
outl(1 << 12, card->io_port + CSR9); /* enable boot rom access */
for (i = 0x100; i < 0x1f7; i += link + 2) {
outl(i, card->io_port + CSR10);
tuple = inl(card->io_port + CSR9) & 0xff;
outl(i + 1, card->io_port + CSR10);
link = inl(card->io_port + CSR9) & 0xff;
outl(i + 2, card->io_port + CSR10);
data_id = inl(card->io_port + CSR9) & 0xff;
outl(i + 3, card->io_port + CSR10);
data_count = inl(card->io_port + CSR9) & 0xff;
if ((tuple == 0x22) && (data_id == 0x04) && (data_count == 0x06)) {
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
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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
* This is it. We have the data we want.
*/
for (j = 0; j < 6; j++) {
outl(i + j + 4, card->io_port + CSR10);
card->dev->dev_addr[j] = inl(card->io_port + CSR9) & 0xff;
}
break;
} else if (link == 0) {
break;
}
}
spin_unlock_irqrestore(&card->lock, flags);
#ifdef DEBUG
for (i = 0; i < 6; i++)
printk("%c%2.2X", i ? ':' : ' ', card->dev->dev_addr[i]);
printk("\n");
#endif
leave("read_mac_address");
}
/*
transceiver_voodoo() enables the external UTP plug thingy.
it's called voodoo as I stole this code and cannot cross-reference
it with the specification.
*/
static void transceiver_voodoo(struct xircom_private *card)
{
unsigned long flags;
enter("transceiver_voodoo");
/* disable all powermanagement */
pci_write_config_dword(card->pdev, PCI_POWERMGMT, 0x0000);
setup_descriptors(card);
spin_lock_irqsave(&card->lock, flags);
outl(0x0008, card->io_port + CSR15);
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
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udelay(25);
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
outl(0xa8050000, card->io_port + CSR15);
udelay(25);
outl(0xa00f0000, card->io_port + CSR15);
udelay(25);
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +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
spin_unlock_irqrestore(&card->lock, flags);
netif_start_queue(card->dev);
leave("transceiver_voodoo");
}
static void xircom_up(struct xircom_private *card)
{
unsigned long flags;
int i;
enter("xircom_up");
/* disable all powermanagement */
pci_write_config_dword(card->pdev, PCI_POWERMGMT, 0x0000);
setup_descriptors(card);
spin_lock_irqsave(&card->lock, flags);
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +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
enable_link_interrupt(card);
enable_transmit_interrupt(card);
enable_receive_interrupt(card);
enable_common_interrupts(card);
enable_promisc(card);
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +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
/* The card can have received packets already, read them away now */
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
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for (i=0;i<NUMDESCRIPTORS;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
investigate_read_descriptor(card->dev,card,i,bufferoffsets[i]);
spin_unlock_irqrestore(&card->lock, flags);
trigger_receive(card);
trigger_transmit(card);
netif_start_queue(card->dev);
leave("xircom_up");
}
/* Bufferoffset is in BYTES */
static void investigate_read_descriptor(struct net_device *dev,struct xircom_private *card, int descnr, unsigned int bufferoffset)
{
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
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int status;
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
enter("investigate_read_descriptor");
status = card->rx_buffer[4*descnr];
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +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
if ((status > 0)) { /* packet received */
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +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
/* TODO: discard error packets */
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +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
short pkt_len = ((status >> 16) & 0x7ff) - 4; /* minus 4, we don't want the CRC */
struct sk_buff *skb;
if (pkt_len > 1518) {
printk(KERN_ERR "xircom_cb: Packet length %i is bogus \n",pkt_len);
pkt_len = 1518;
}
skb = dev_alloc_skb(pkt_len + 2);
if (skb == NULL) {
card->stats.rx_dropped++;
goto out;
}
skb->dev = dev;
skb_reserve(skb, 2);
eth_copy_and_sum(skb, (unsigned char*)&card->rx_buffer[bufferoffset / 4], pkt_len, 0);
skb_put(skb, pkt_len);
skb->protocol = eth_type_trans(skb, dev);
netif_rx(skb);
dev->last_rx = jiffies;
card->stats.rx_packets++;
card->stats.rx_bytes += pkt_len;
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +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
out:
/* give the buffer back to the card */
card->rx_buffer[4*descnr] = 0x80000000;
trigger_receive(card);
}
leave("investigate_read_descriptor");
}
/* Bufferoffset is in BYTES */
static void investigate_write_descriptor(struct net_device *dev, struct xircom_private *card, int descnr, unsigned int bufferoffset)
{
int status;
enter("investigate_write_descriptor");
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +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
status = card->tx_buffer[4*descnr];
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
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#if 0
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 (status & 0x8000) { /* Major error */
printk(KERN_ERR "Major transmit error status %x \n", status);
card->tx_buffer[4*descnr] = 0;
netif_wake_queue (dev);
}
#endif
if (status > 0) { /* bit 31 is 0 when done */
if (card->tx_skb[descnr]!=NULL) {
card->stats.tx_bytes += card->tx_skb[descnr]->len;
dev_kfree_skb_irq(card->tx_skb[descnr]);
}
card->tx_skb[descnr] = NULL;
/* Bit 8 in the status field is 1 if there was a collision */
if (status&(1<<8))
card->stats.collisions++;
card->tx_buffer[4*descnr] = 0; /* descriptor is free again */
netif_wake_queue (dev);
card->stats.tx_packets++;
}
leave("investigate_write_descriptor");
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
2006-05-27 09:39:03 +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
}
static int __init xircom_init(void)
{
[PATCH] xircom_cb: wire up errors from pci_register_driver() Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Jeff Garzik <jeff@garzik.org> Cc: Dominik Brodowski <linux@dominikbrodowski.net> Cc: Valerie Henson <val_henson@linux.intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-08-15 14:00:28 +08:00
return pci_register_driver(&xircom_ops);
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!
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}
static void __exit xircom_exit(void)
{
pci_unregister_driver(&xircom_ops);
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
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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
[netdrvr] trim trailing whitespace: 8139*.c, epic100, forcedeth, tulip/*
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module_init(xircom_init)
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
module_exit(xircom_exit)