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OpenCloudOS-Kernel/drivers/net/a2065.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
/*
* Amiga Linux/68k A2065 Ethernet Driver
*
* (C) Copyright 1995-2003 by Geert Uytterhoeven <geert@linux-m68k.org>
*
* Fixes and tips by:
* - Janos Farkas (CHEXUM@sparta.banki.hu)
* - Jes Degn Soerensen (jds@kom.auc.dk)
* - Matt Domsch (Matt_Domsch@dell.com)
*
* ----------------------------------------------------------------------------
*
* This program is based on
*
* ariadne.?: Amiga Linux/68k Ariadne Ethernet Driver
* (C) Copyright 1995 by Geert Uytterhoeven,
* Peter De Schrijver
*
* lance.c: An AMD LANCE ethernet driver for linux.
* Written 1993-94 by Donald Becker.
*
* Am79C960: PCnet(tm)-ISA Single-Chip Ethernet Controller
* Advanced Micro Devices
* Publication #16907, Rev. B, Amendment/0, May 1994
*
* ----------------------------------------------------------------------------
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of the Linux
* distribution for more details.
*
* ----------------------------------------------------------------------------
*
* The A2065 is a Zorro-II board made by Commodore/Ameristar. It contains:
*
* - an Am7990 Local Area Network Controller for Ethernet (LANCE) with
* both 10BASE-2 (thin coax) and AUI (DB-15) connectors
*/
#include <linux/errno.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/module.h>
#include <linux/stddef.h>
#include <linux/kernel.h>
#include <linux/interrupt.h>
#include <linux/ioport.h>
#include <linux/skbuff.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/init.h>
#include <linux/crc32.h>
#include <linux/zorro.h>
#include <linux/bitops.h>
#include <asm/irq.h>
#include <asm/amigaints.h>
#include <asm/amigahw.h>
#include "a2065.h"
/*
* Transmit/Receive Ring Definitions
*/
#define LANCE_LOG_TX_BUFFERS (2)
#define LANCE_LOG_RX_BUFFERS (4)
#define TX_RING_SIZE (1<<LANCE_LOG_TX_BUFFERS)
#define RX_RING_SIZE (1<<LANCE_LOG_RX_BUFFERS)
#define TX_RING_MOD_MASK (TX_RING_SIZE-1)
#define RX_RING_MOD_MASK (RX_RING_SIZE-1)
#define PKT_BUF_SIZE (1544)
#define RX_BUFF_SIZE PKT_BUF_SIZE
#define TX_BUFF_SIZE PKT_BUF_SIZE
/*
* Layout of the Lance's RAM Buffer
*/
struct lance_init_block {
unsigned short mode; /* Pre-set mode (reg. 15) */
unsigned char phys_addr[6]; /* Physical ethernet address */
unsigned filter[2]; /* Multicast filter. */
/* Receive and transmit ring base, along with extra bits. */
unsigned short rx_ptr; /* receive descriptor addr */
unsigned short rx_len; /* receive len and high addr */
unsigned short tx_ptr; /* transmit descriptor addr */
unsigned short tx_len; /* transmit len and high addr */
drivers/net: Trim trailing whitespace Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-14 01:24:59 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/* The Tx and Rx ring entries must aligned on 8-byte boundaries. */
struct lance_rx_desc brx_ring[RX_RING_SIZE];
struct lance_tx_desc btx_ring[TX_RING_SIZE];
char rx_buf [RX_RING_SIZE][RX_BUFF_SIZE];
char tx_buf [TX_RING_SIZE][TX_BUFF_SIZE];
};
/*
* Private Device Data
*/
struct lance_private {
char *name;
volatile struct lance_regs *ll;
volatile struct lance_init_block *init_block; /* Hosts view */
volatile struct lance_init_block *lance_init_block; /* Lance view */
int rx_new, tx_new;
int rx_old, tx_old;
drivers/net: Trim trailing whitespace Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-14 01:24:59 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
int lance_log_rx_bufs, lance_log_tx_bufs;
int rx_ring_mod_mask, tx_ring_mod_mask;
struct net_device_stats stats;
int tpe; /* cable-selection is TPE */
int auto_select; /* cable-selection by carrier */
unsigned short busmaster_regval;
#ifdef CONFIG_SUNLANCE
struct Linux_SBus_DMA *ledma; /* if set this points to ledma and arch=4m */
int burst_sizes; /* ledma SBus burst sizes */
#endif
struct timer_list multicast_timer;
};
#define TX_BUFFS_AVAIL ((lp->tx_old<=lp->tx_new)?\
lp->tx_old+lp->tx_ring_mod_mask-lp->tx_new:\
lp->tx_old - lp->tx_new-1)
#define LANCE_ADDR(x) ((int)(x) & ~0xff000000)
/* Load the CSR registers */
static void load_csrs (struct lance_private *lp)
{
volatile struct lance_regs *ll = lp->ll;
volatile struct lance_init_block *aib = lp->lance_init_block;
int leptr;
leptr = LANCE_ADDR (aib);
ll->rap = LE_CSR1;
ll->rdp = (leptr & 0xFFFF);
ll->rap = LE_CSR2;
ll->rdp = leptr >> 16;
ll->rap = LE_CSR3;
ll->rdp = lp->busmaster_regval;
/* Point back to csr0 */
ll->rap = LE_CSR0;
}
#define ZERO 0
/* Setup the Lance Rx and Tx rings */
static void lance_init_ring (struct net_device *dev)
{
struct lance_private *lp = netdev_priv(dev);
volatile struct lance_init_block *ib = lp->init_block;
volatile struct lance_init_block *aib; /* for LANCE_ADDR computations */
int leptr;
int i;
aib = lp->lance_init_block;
/* Lock out other processes while setting up hardware */
netif_stop_queue(dev);
lp->rx_new = lp->tx_new = 0;
lp->rx_old = lp->tx_old = 0;
ib->mode = 0;
/* Copy the ethernet address to the lance init block
* Note that on the sparc you need to swap the ethernet address.
*/
ib->phys_addr [0] = dev->dev_addr [1];
ib->phys_addr [1] = dev->dev_addr [0];
ib->phys_addr [2] = dev->dev_addr [3];
ib->phys_addr [3] = dev->dev_addr [2];
ib->phys_addr [4] = dev->dev_addr [5];
ib->phys_addr [5] = dev->dev_addr [4];
if (ZERO)
printk(KERN_DEBUG "TX rings:\n");
drivers/net: Trim trailing whitespace Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-14 01:24:59 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/* Setup the Tx ring entries */
for (i = 0; i <= (1<<lp->lance_log_tx_bufs); i++) {
leptr = LANCE_ADDR(&aib->tx_buf[i][0]);
ib->btx_ring [i].tmd0 = leptr;
ib->btx_ring [i].tmd1_hadr = leptr >> 16;
ib->btx_ring [i].tmd1_bits = 0;
ib->btx_ring [i].length = 0xf000; /* The ones required by tmd2 */
ib->btx_ring [i].misc = 0;
if (i < 3 && ZERO)
printk(KERN_DEBUG "%d: 0x%8.8x\n", i, leptr);
}
/* Setup the Rx ring entries */
if (ZERO)
printk(KERN_DEBUG "RX rings:\n");
for (i = 0; i < (1<<lp->lance_log_rx_bufs); i++) {
leptr = LANCE_ADDR(&aib->rx_buf[i][0]);
ib->brx_ring [i].rmd0 = leptr;
ib->brx_ring [i].rmd1_hadr = leptr >> 16;
ib->brx_ring [i].rmd1_bits = LE_R1_OWN;
ib->brx_ring [i].length = -RX_BUFF_SIZE | 0xf000;
ib->brx_ring [i].mblength = 0;
if (i < 3 && ZERO)
printk(KERN_DEBUG "%d: 0x%8.8x\n", i, leptr);
}
/* Setup the initialization block */
drivers/net: Trim trailing whitespace Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-14 01:24:59 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/* Setup rx descriptor pointer */
leptr = LANCE_ADDR(&aib->brx_ring);
ib->rx_len = (lp->lance_log_rx_bufs << 13) | (leptr >> 16);
ib->rx_ptr = leptr;
if (ZERO)
printk(KERN_DEBUG "RX ptr: %8.8x\n", leptr);
drivers/net: Trim trailing whitespace Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-14 01:24:59 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/* Setup tx descriptor pointer */
leptr = LANCE_ADDR(&aib->btx_ring);
ib->tx_len = (lp->lance_log_tx_bufs << 13) | (leptr >> 16);
ib->tx_ptr = leptr;
if (ZERO)
printk(KERN_DEBUG "TX ptr: %8.8x\n", leptr);
/* Clear the multicast filter */
ib->filter [0] = 0;
ib->filter [1] = 0;
}
static int init_restart_lance (struct lance_private *lp)
{
volatile struct lance_regs *ll = lp->ll;
int i;
ll->rap = LE_CSR0;
ll->rdp = LE_C0_INIT;
/* Wait for the lance to complete initialization */
for (i = 0; (i < 100) && !(ll->rdp & (LE_C0_ERR | LE_C0_IDON)); i++)
barrier();
if ((i == 100) || (ll->rdp & LE_C0_ERR)) {
printk(KERN_ERR "LANCE unopened after %d ticks, csr0=%4.4x.\n",
i, ll->rdp);
return -EIO;
}
/* Clear IDON by writing a "1", enable interrupts and start lance */
ll->rdp = LE_C0_IDON;
ll->rdp = LE_C0_INEA | LE_C0_STRT;
return 0;
}
static int lance_rx (struct net_device *dev)
{
struct lance_private *lp = netdev_priv(dev);
volatile struct lance_init_block *ib = lp->init_block;
volatile struct lance_regs *ll = lp->ll;
volatile struct lance_rx_desc *rd;
unsigned char bits;
int len = 0; /* XXX shut up gcc warnings */
struct sk_buff *skb = 0; /* XXX shut up gcc warnings */
#ifdef TEST_HITS
int i;
printk(KERN_DEBUG "[");
for (i = 0; i < RX_RING_SIZE; i++) {
if (i == lp->rx_new)
printk ("%s",
ib->brx_ring [i].rmd1_bits & LE_R1_OWN ? "_" : "X");
else
printk ("%s",
ib->brx_ring [i].rmd1_bits & LE_R1_OWN ? "." : "1");
}
printk ("]\n");
#endif
drivers/net: Trim trailing whitespace Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-14 01:24:59 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
ll->rdp = LE_C0_RINT|LE_C0_INEA;
for (rd = &ib->brx_ring [lp->rx_new];
!((bits = rd->rmd1_bits) & LE_R1_OWN);
rd = &ib->brx_ring [lp->rx_new]) {
/* We got an incomplete frame? */
if ((bits & LE_R1_POK) != LE_R1_POK) {
lp->stats.rx_over_errors++;
lp->stats.rx_errors++;
continue;
} else if (bits & LE_R1_ERR) {
/* Count only the end frame as a rx error,
* not the beginning
*/
if (bits & LE_R1_BUF) lp->stats.rx_fifo_errors++;
if (bits & LE_R1_CRC) lp->stats.rx_crc_errors++;
if (bits & LE_R1_OFL) lp->stats.rx_over_errors++;
if (bits & LE_R1_FRA) lp->stats.rx_frame_errors++;
if (bits & LE_R1_EOP) lp->stats.rx_errors++;
} else {
len = (rd->mblength & 0xfff) - 4;
skb = dev_alloc_skb (len+2);
if (skb == 0) {
printk(KERN_WARNING "%s: Memory squeeze, "
"deferring packet.\n", dev->name);
lp->stats.rx_dropped++;
rd->mblength = 0;
rd->rmd1_bits = LE_R1_OWN;
lp->rx_new = (lp->rx_new + 1) & lp->rx_ring_mod_mask;
return 0;
}
drivers/net: Trim trailing whitespace Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-14 01:24:59 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
skb->dev = dev;
skb_reserve (skb, 2); /* 16 byte align */
skb_put (skb, len); /* make room */
eth_copy_and_sum(skb,
(unsigned char *)&(ib->rx_buf [lp->rx_new][0]),
len, 0);
skb->protocol = eth_type_trans (skb, dev);
netif_rx (skb);
dev->last_rx = jiffies;
lp->stats.rx_packets++;
lp->stats.rx_bytes += len;
}
/* Return the packet to the pool */
rd->mblength = 0;
rd->rmd1_bits = LE_R1_OWN;
lp->rx_new = (lp->rx_new + 1) & lp->rx_ring_mod_mask;
}
return 0;
}
static int lance_tx (struct net_device *dev)
{
struct lance_private *lp = netdev_priv(dev);
volatile struct lance_init_block *ib = lp->init_block;
volatile struct lance_regs *ll = lp->ll;
volatile struct lance_tx_desc *td;
int i, j;
int status;
/* csr0 is 2f3 */
ll->rdp = LE_C0_TINT | LE_C0_INEA;
/* csr0 is 73 */
j = lp->tx_old;
for (i = j; i != lp->tx_new; i = j) {
td = &ib->btx_ring [i];
/* If we hit a packet not owned by us, stop */
if (td->tmd1_bits & LE_T1_OWN)
break;
drivers/net: Trim trailing whitespace Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-14 01:24:59 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
if (td->tmd1_bits & LE_T1_ERR) {
status = td->misc;
drivers/net: Trim trailing whitespace Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-14 01:24:59 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
lp->stats.tx_errors++;
if (status & LE_T3_RTY) lp->stats.tx_aborted_errors++;
if (status & LE_T3_LCOL) lp->stats.tx_window_errors++;
if (status & LE_T3_CLOS) {
lp->stats.tx_carrier_errors++;
if (lp->auto_select) {
lp->tpe = 1 - lp->tpe;
printk(KERN_ERR "%s: Carrier Lost, "
"trying %s\n", dev->name,
lp->tpe?"TPE":"AUI");
/* Stop the lance */
ll->rap = LE_CSR0;
ll->rdp = LE_C0_STOP;
lance_init_ring (dev);
load_csrs (lp);
init_restart_lance (lp);
return 0;
}
}
/* buffer errors and underflows turn off the transmitter */
/* Restart the adapter */
if (status & (LE_T3_BUF|LE_T3_UFL)) {
lp->stats.tx_fifo_errors++;
printk(KERN_ERR "%s: Tx: ERR_BUF|ERR_UFL, "
"restarting\n", dev->name);
/* Stop the lance */
ll->rap = LE_CSR0;
ll->rdp = LE_C0_STOP;
lance_init_ring (dev);
load_csrs (lp);
init_restart_lance (lp);
return 0;
}
} else if ((td->tmd1_bits & LE_T1_POK) == LE_T1_POK) {
/*
* So we don't count the packet more than once.
*/
td->tmd1_bits &= ~(LE_T1_POK);
/* One collision before packet was sent. */
if (td->tmd1_bits & LE_T1_EONE)
lp->stats.collisions++;
/* More than one collision, be optimistic. */
if (td->tmd1_bits & LE_T1_EMORE)
lp->stats.collisions += 2;
lp->stats.tx_packets++;
}
drivers/net: Trim trailing whitespace Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-14 01:24:59 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
j = (j + 1) & lp->tx_ring_mod_mask;
}
lp->tx_old = j;
ll->rdp = LE_C0_TINT | LE_C0_INEA;
return 0;
}
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 lance_interrupt (int irq, void *dev_id)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
{
struct net_device *dev;
struct lance_private *lp;
volatile struct lance_regs *ll;
int csr0;
dev = (struct net_device *) dev_id;
lp = netdev_priv(dev);
ll = lp->ll;
ll->rap = LE_CSR0; /* LANCE Controller Status */
csr0 = ll->rdp;
if (!(csr0 & LE_C0_INTR)) /* Check if any interrupt has */
return IRQ_NONE; /* been generated by the Lance. */
/* Acknowledge all the interrupt sources ASAP */
ll->rdp = csr0 & ~(LE_C0_INEA|LE_C0_TDMD|LE_C0_STOP|LE_C0_STRT|
LE_C0_INIT);
if ((csr0 & LE_C0_ERR)) {
/* Clear the error condition */
ll->rdp = LE_C0_BABL|LE_C0_ERR|LE_C0_MISS|LE_C0_INEA;
}
drivers/net: Trim trailing whitespace Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-14 01:24:59 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
if (csr0 & LE_C0_RINT)
lance_rx (dev);
if (csr0 & LE_C0_TINT)
lance_tx (dev);
/* Log misc errors. */
if (csr0 & LE_C0_BABL)
lp->stats.tx_errors++; /* Tx babble. */
if (csr0 & LE_C0_MISS)
lp->stats.rx_errors++; /* Missed a Rx frame. */
if (csr0 & LE_C0_MERR) {
printk(KERN_ERR "%s: Bus master arbitration failure, status "
"%4.4x.\n", dev->name, csr0);
/* Restart the chip. */
ll->rdp = LE_C0_STRT;
}
if (netif_queue_stopped(dev) && TX_BUFFS_AVAIL > 0)
netif_wake_queue(dev);
ll->rap = LE_CSR0;
ll->rdp = LE_C0_BABL|LE_C0_CERR|LE_C0_MISS|LE_C0_MERR|
LE_C0_IDON|LE_C0_INEA;
return IRQ_HANDLED;
}
struct net_device *last_dev = 0;
static int lance_open (struct net_device *dev)
{
struct lance_private *lp = netdev_priv(dev);
volatile struct lance_regs *ll = lp->ll;
int ret;
last_dev = dev;
/* Stop the Lance */
ll->rap = LE_CSR0;
ll->rdp = LE_C0_STOP;
/* Install the Interrupt handler */
[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
ret = request_irq(IRQ_AMIGA_PORTS, lance_interrupt, IRQF_SHARED,
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->name, dev);
if (ret) return ret;
load_csrs (lp);
lance_init_ring (dev);
netif_start_queue(dev);
return init_restart_lance (lp);
}
static int lance_close (struct net_device *dev)
{
struct lance_private *lp = netdev_priv(dev);
volatile struct lance_regs *ll = lp->ll;
netif_stop_queue(dev);
del_timer_sync(&lp->multicast_timer);
/* Stop the card */
ll->rap = LE_CSR0;
ll->rdp = LE_C0_STOP;
free_irq(IRQ_AMIGA_PORTS, dev);
return 0;
}
static inline int lance_reset (struct net_device *dev)
{
struct lance_private *lp = netdev_priv(dev);
volatile struct lance_regs *ll = lp->ll;
int status;
drivers/net: Trim trailing whitespace Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-14 01:24:59 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/* Stop the lance */
ll->rap = LE_CSR0;
ll->rdp = LE_C0_STOP;
load_csrs (lp);
lance_init_ring (dev);
dev->trans_start = jiffies;
netif_start_queue(dev);
status = init_restart_lance (lp);
#ifdef DEBUG_DRIVER
printk(KERN_DEBUG "Lance restart=%d\n", status);
#endif
return status;
}
static void lance_tx_timeout(struct net_device *dev)
{
struct lance_private *lp = netdev_priv(dev);
volatile struct lance_regs *ll = lp->ll;
printk(KERN_ERR "%s: transmit timed out, status %04x, reset\n",
dev->name, ll->rdp);
lance_reset(dev);
netif_wake_queue(dev);
}
static int lance_start_xmit (struct sk_buff *skb, struct net_device *dev)
{
struct lance_private *lp = netdev_priv(dev);
volatile struct lance_regs *ll = lp->ll;
volatile struct lance_init_block *ib = lp->init_block;
int entry, skblen, len;
int status = 0;
static int outs;
unsigned long flags;
skblen = skb->len;
len = skblen;
drivers/net: Trim trailing whitespace Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-14 01:24:59 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
if (len < ETH_ZLEN) {
len = ETH_ZLEN;
[NET]: Avoid allocating skb in skb_pad First of all it is unnecessary to allocate a new skb in skb_pad since the existing one is not shared. More importantly, our hard_start_xmit interface does not allow a new skb to be allocated since that breaks requeueing. This patch uses pskb_expand_head to expand the existing skb and linearize it if needed. Actually, someone should sift through every instance of skb_pad on a non-linear skb as they do not fit the reasons why this was originally created. Incidentally, this fixes a minor bug when the skb is cloned (tcpdump, TCP, etc.). As it is skb_pad will simply write over a cloned skb. Because of the position of the write it is unlikely to cause problems but still it's best if we don't do it. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-23 17:06:41 +08:00
if (skb_padto(skb, ETH_ZLEN))
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;
}
local_irq_save(flags);
if (!TX_BUFFS_AVAIL){
local_irq_restore(flags);
return -1;
}
#ifdef DEBUG_DRIVER
/* dump the packet */
{
int i;
drivers/net: Trim trailing whitespace Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-14 01:24:59 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
for (i = 0; i < 64; i++) {
if ((i % 16) == 0)
printk("\n" KERN_DEBUG);
printk ("%2.2x ", skb->data [i]);
}
printk("\n");
}
#endif
entry = lp->tx_new & lp->tx_ring_mod_mask;
ib->btx_ring [entry].length = (-len) | 0xf000;
ib->btx_ring [entry].misc = 0;
drivers/net: Trim trailing whitespace Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-14 01:24:59 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
memcpy ((char *)&ib->tx_buf [entry][0], skb->data, skblen);
/* Clear the slack of the packet, do I need this? */
if (len != skblen)
memset ((char *) &ib->tx_buf [entry][skblen], 0, len - skblen);
drivers/net: Trim trailing whitespace Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-14 01:24:59 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/* Now, give the packet to the lance */
ib->btx_ring [entry].tmd1_bits = (LE_T1_POK|LE_T1_OWN);
lp->tx_new = (lp->tx_new+1) & lp->tx_ring_mod_mask;
outs++;
if (TX_BUFFS_AVAIL <= 0)
netif_stop_queue(dev);
/* Kick the lance: transmit now */
ll->rdp = LE_C0_INEA | LE_C0_TDMD;
dev->trans_start = jiffies;
dev_kfree_skb (skb);
drivers/net: Trim trailing whitespace Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-14 01:24:59 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
local_irq_restore(flags);
return status;
}
static struct net_device_stats *lance_get_stats (struct net_device *dev)
{
struct lance_private *lp = netdev_priv(dev);
return &lp->stats;
}
/* taken from the depca driver */
static void lance_load_multicast (struct net_device *dev)
{
struct lance_private *lp = netdev_priv(dev);
volatile struct lance_init_block *ib = lp->init_block;
volatile u16 *mcast_table = (u16 *)&ib->filter;
struct dev_mc_list *dmi=dev->mc_list;
char *addrs;
int i;
u32 crc;
drivers/net: Trim trailing whitespace Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-14 01:24:59 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/* set all multicast bits */
drivers/net: Trim trailing whitespace Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-14 01:24:59 +08:00
if (dev->flags & IFF_ALLMULTI){
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
ib->filter [0] = 0xffffffff;
ib->filter [1] = 0xffffffff;
return;
}
/* clear the multicast filter */
ib->filter [0] = 0;
ib->filter [1] = 0;
/* Add addresses */
for (i = 0; i < dev->mc_count; i++){
addrs = dmi->dmi_addr;
dmi = dmi->next;
/* multicast address? */
if (!(*addrs & 1))
continue;
drivers/net: Trim trailing whitespace Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-14 01:24:59 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
crc = ether_crc_le(6, addrs);
crc = crc >> 26;
mcast_table [crc >> 4] |= 1 << (crc & 0xf);
}
return;
}
static void lance_set_multicast (struct net_device *dev)
{
struct lance_private *lp = netdev_priv(dev);
volatile struct lance_init_block *ib = lp->init_block;
volatile struct lance_regs *ll = lp->ll;
if (!netif_running(dev))
return;
if (lp->tx_old != lp->tx_new) {
mod_timer(&lp->multicast_timer, jiffies + 4);
netif_wake_queue(dev);
return;
}
netif_stop_queue(dev);
ll->rap = LE_CSR0;
ll->rdp = LE_C0_STOP;
lance_init_ring (dev);
if (dev->flags & IFF_PROMISC) {
ib->mode |= LE_MO_PROM;
} else {
ib->mode &= ~LE_MO_PROM;
lance_load_multicast (dev);
}
load_csrs (lp);
init_restart_lance (lp);
netif_wake_queue(dev);
}
static int __devinit a2065_init_one(struct zorro_dev *z,
const struct zorro_device_id *ent);
static void __devexit a2065_remove_one(struct zorro_dev *z);
static struct zorro_device_id a2065_zorro_tbl[] __devinitdata = {
{ ZORRO_PROD_CBM_A2065_1 },
{ ZORRO_PROD_CBM_A2065_2 },
{ ZORRO_PROD_AMERISTAR_A2065 },
{ 0 }
};
static struct zorro_driver a2065_driver = {
.name = "a2065",
.id_table = a2065_zorro_tbl,
.probe = a2065_init_one,
.remove = __devexit_p(a2065_remove_one),
};
static int __devinit a2065_init_one(struct zorro_dev *z,
const struct zorro_device_id *ent)
{
struct net_device *dev;
struct lance_private *priv;
unsigned long board, base_addr, mem_start;
struct resource *r1, *r2;
int err;
board = z->resource.start;
base_addr = board+A2065_LANCE;
mem_start = board+A2065_RAM;
r1 = request_mem_region(base_addr, sizeof(struct lance_regs),
"Am7990");
if (!r1)
return -EBUSY;
r2 = request_mem_region(mem_start, A2065_RAM_SIZE, "RAM");
if (!r2) {
release_resource(r1);
return -EBUSY;
}
dev = alloc_etherdev(sizeof(struct lance_private));
if (dev == NULL) {
release_resource(r1);
release_resource(r2);
return -ENOMEM;
}
SET_MODULE_OWNER(dev);
priv = netdev_priv(dev);
r1->name = dev->name;
r2->name = dev->name;
dev->dev_addr[0] = 0x00;
if (z->id != ZORRO_PROD_AMERISTAR_A2065) { /* Commodore */
dev->dev_addr[1] = 0x80;
dev->dev_addr[2] = 0x10;
} else { /* Ameristar */
dev->dev_addr[1] = 0x00;
dev->dev_addr[2] = 0x9f;
}
dev->dev_addr[3] = (z->rom.er_SerialNumber>>16) & 0xff;
dev->dev_addr[4] = (z->rom.er_SerialNumber>>8) & 0xff;
dev->dev_addr[5] = z->rom.er_SerialNumber & 0xff;
dev->base_addr = ZTWO_VADDR(base_addr);
dev->mem_start = ZTWO_VADDR(mem_start);
dev->mem_end = dev->mem_start+A2065_RAM_SIZE;
priv->ll = (volatile struct lance_regs *)dev->base_addr;
priv->init_block = (struct lance_init_block *)dev->mem_start;
priv->lance_init_block = (struct lance_init_block *)A2065_RAM;
priv->auto_select = 0;
priv->busmaster_regval = LE_C3_BSWP;
priv->lance_log_rx_bufs = LANCE_LOG_RX_BUFFERS;
priv->lance_log_tx_bufs = LANCE_LOG_TX_BUFFERS;
priv->rx_ring_mod_mask = RX_RING_MOD_MASK;
priv->tx_ring_mod_mask = TX_RING_MOD_MASK;
dev->open = &lance_open;
dev->stop = &lance_close;
dev->hard_start_xmit = &lance_start_xmit;
dev->tx_timeout = &lance_tx_timeout;
dev->watchdog_timeo = 5*HZ;
dev->get_stats = &lance_get_stats;
dev->set_multicast_list = &lance_set_multicast;
dev->dma = 0;
init_timer(&priv->multicast_timer);
priv->multicast_timer.data = (unsigned long) dev;
priv->multicast_timer.function =
(void (*)(unsigned long)) &lance_set_multicast;
err = register_netdev(dev);
if (err) {
release_resource(r1);
release_resource(r2);
free_netdev(dev);
return err;
}
zorro_set_drvdata(z, dev);
printk(KERN_INFO "%s: A2065 at 0x%08lx, Ethernet Address "
"%02x:%02x:%02x:%02x:%02x:%02x\n", dev->name, board,
dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
return 0;
}
static void __devexit a2065_remove_one(struct zorro_dev *z)
{
struct net_device *dev = zorro_get_drvdata(z);
unregister_netdev(dev);
release_mem_region(ZTWO_PADDR(dev->base_addr),
sizeof(struct lance_regs));
release_mem_region(ZTWO_PADDR(dev->mem_start), A2065_RAM_SIZE);
free_netdev(dev);
}
static int __init a2065_init_module(void)
{
[PATCH] amiga: fix driver_register() return handling, remove zorro_module_init() Remove the assumption that driver_register() returns the number of devices bound to the driver. In fact, it returns zero for success or a negative error value. zorro_module_init() used the device count to automatically unregister and unload drivers that found no devices. That might have worked at one time, but has been broken for some time because zorro_register_driver() returned either a negative error or a positive count (never zero). So it could only unregister on failure, when it's not needed anyway. This functionality could be resurrected in individual drivers by counting devices in their .probe() methods. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-25 19:07:20 +08:00
return zorro_register_driver(&a2065_driver);
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 __exit a2065_cleanup_module(void)
{
zorro_unregister_driver(&a2065_driver);
}
module_init(a2065_init_module);
module_exit(a2065_cleanup_module);
MODULE_LICENSE("GPL");