Release 4.11 drivers/net/wan/wanxl.c
/*
* wanXL serial card driver for Linux
* host part
*
* Copyright (C) 2003 Krzysztof Halasa <khc@pm.waw.pl>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License
* as published by the Free Software Foundation.
*
* Status:
* - Only DTE (external clock) support with NRZ and NRZI encodings
* - wanXL100 will require minor driver modifications, no access to hw
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/sched.h>
#include <linux/types.h>
#include <linux/fcntl.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/ioport.h>
#include <linux/netdevice.h>
#include <linux/hdlc.h>
#include <linux/pci.h>
#include <linux/dma-mapping.h>
#include <linux/delay.h>
#include <asm/io.h>
#include "wanxl.h"
static const char* version = "wanXL serial card driver version: 0.48";
#define PLX_CTL_RESET 0x40000000
/* adapter reset */
#undef DEBUG_PKT
#undef DEBUG_PCI
/* MAILBOX #1 - PUTS COMMANDS */
#define MBX1_CMD_ABORTJ 0x85000000
/* Abort and Jump */
#ifdef __LITTLE_ENDIAN
#define MBX1_CMD_BSWAP 0x8C000001
/* little-endian Byte Swap Mode */
#else
#define MBX1_CMD_BSWAP 0x8C000000
/* big-endian Byte Swap Mode */
#endif
/* MAILBOX #2 - DRAM SIZE */
#define MBX2_MEMSZ_MASK 0xFFFF0000
/* PUTS Memory Size Register mask */
struct port {
struct net_device *dev;
struct card *card;
spinlock_t lock; /* for wanxl_xmit */
int node; /* physical port #0 - 3 */
unsigned int clock_type;
int tx_in, tx_out;
struct sk_buff *tx_skbs[TX_BUFFERS];
};
struct card_status {
desc_t rx_descs[RX_QUEUE_LENGTH];
port_status_t port_status[4];
};
struct card {
int n_ports; /* 1, 2 or 4 ports */
u8 irq;
u8 __iomem *plx; /* PLX PCI9060 virtual base address */
struct pci_dev *pdev; /* for pci_name(pdev) */
int rx_in;
struct sk_buff *rx_skbs[RX_QUEUE_LENGTH];
struct card_status *status; /* shared between host and card */
dma_addr_t status_address;
struct port ports[0]; /* 1 - 4 port structures follow */
};
static inline struct port *dev_to_port(struct net_device *dev)
{
return (struct port *)dev_to_hdlc(dev)->priv;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andrew Morton | 18 | 66.67% | 1 | 25.00% |
| Al Viro | 5 | 18.52% | 2 | 50.00% |
| Himangi Saraogi | 4 | 14.81% | 1 | 25.00% |
| Total | 27 | 100.00% | 4 | 100.00% |
static inline port_status_t *get_status(struct port *port)
{
return &port->card->status->port_status[port->node];
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andrew Morton | 26 | 92.86% | 1 | 50.00% |
| Himangi Saraogi | 2 | 7.14% | 1 | 50.00% |
| Total | 28 | 100.00% | 2 | 100.00% |
#ifdef DEBUG_PCI
static inline dma_addr_t pci_map_single_debug(struct pci_dev *pdev, void *ptr,
size_t size, int direction)
{
dma_addr_t addr = pci_map_single(pdev, ptr, size, direction);
if (addr + size > 0x100000000LL)
pr_crit("%s: pci_map_single() returned memory at 0x%llx!\n",
pci_name(pdev), (unsigned long long)addr);
return addr;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andrew Morton | 61 | 95.31% | 2 | 50.00% |
| Joe Perches | 2 | 3.12% | 1 | 25.00% |
| Dave Jones | 1 | 1.56% | 1 | 25.00% |
| Total | 64 | 100.00% | 4 | 100.00% |
#undef pci_map_single
#define pci_map_single pci_map_single_debug
#endif
/* Cable and/or personality module change interrupt service */
static inline void wanxl_cable_intr(struct port *port)
{
u32 value = get_status(port)->cable;
int valid = 1;
const char *cable, *pm, *dte = "", *dsr = "", *dcd = "";
switch(value & 0x7) {
case STATUS_CABLE_V35: cable = "V.35"; break;
case STATUS_CABLE_X21: cable = "X.21"; break;
case STATUS_CABLE_V24: cable = "V.24"; break;
case STATUS_CABLE_EIA530: cable = "EIA530"; break;
case STATUS_CABLE_NONE: cable = "no"; break;
default: cable = "invalid";
}
switch((value >> STATUS_CABLE_PM_SHIFT) & 0x7) {
case STATUS_CABLE_V35: pm = "V.35"; break;
case STATUS_CABLE_X21: pm = "X.21"; break;
case STATUS_CABLE_V24: pm = "V.24"; break;
case STATUS_CABLE_EIA530: pm = "EIA530"; break;
case STATUS_CABLE_NONE: pm = "no personality"; valid = 0; break;
default: pm = "invalid personality"; valid = 0;
}
if (valid) {
if ((value & 7) == ((value >> STATUS_CABLE_PM_SHIFT) & 7)) {
dsr = (value & STATUS_CABLE_DSR) ? ", DSR ON" :
", DSR off";
dcd = (value & STATUS_CABLE_DCD) ? ", carrier ON" :
", carrier off";
}
dte = (value & STATUS_CABLE_DCE) ? " DCE" : " DTE";
}
netdev_info(port->dev, "%s%s module, %s cable%s%s\n",
pm, dte, cable, dsr, dcd);
if (value & STATUS_CABLE_DCD)
netif_carrier_on(port->dev);
else
netif_carrier_off(port->dev);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andrew Morton | 248 | 91.85% | 1 | 20.00% |
| Krzysztof Hałasa | 17 | 6.30% | 2 | 40.00% |
| Joe Perches | 3 | 1.11% | 1 | 20.00% |
| Himangi Saraogi | 2 | 0.74% | 1 | 20.00% |
| Total | 270 | 100.00% | 5 | 100.00% |
/* Transmit complete interrupt service */
static inline void wanxl_tx_intr(struct port *port)
{
struct net_device *dev = port->dev;
while (1) {
desc_t *desc = &get_status(port)->tx_descs[port->tx_in];
struct sk_buff *skb = port->tx_skbs[port->tx_in];
switch (desc->stat) {
case PACKET_FULL:
case PACKET_EMPTY:
netif_wake_queue(dev);
return;
case PACKET_UNDERRUN:
dev->stats.tx_errors++;
dev->stats.tx_fifo_errors++;
break;
default:
dev->stats.tx_packets++;
dev->stats.tx_bytes += skb->len;
}
desc->stat = PACKET_EMPTY; /* Free descriptor */
pci_unmap_single(port->card->pdev, desc->address, skb->len,
PCI_DMA_TODEVICE);
dev_kfree_skb_irq(skb);
port->tx_in = (port->tx_in + 1) % TX_BUFFERS;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andrew Morton | 131 | 82.39% | 2 | 33.33% |
| Krzysztof Hałasa | 14 | 8.81% | 2 | 33.33% |
| Al Viro | 12 | 7.55% | 1 | 16.67% |
| Himangi Saraogi | 2 | 1.26% | 1 | 16.67% |
| Total | 159 | 100.00% | 6 | 100.00% |
/* Receive complete interrupt service */
static inline void wanxl_rx_intr(struct card *card)
{
desc_t *desc;
while (desc = &card->status->rx_descs[card->rx_in],
desc->stat != PACKET_EMPTY) {
if ((desc->stat & PACKET_PORT_MASK) > card->n_ports)
pr_crit("%s: received packet for nonexistent port\n",
pci_name(card->pdev));
else {
struct sk_buff *skb = card->rx_skbs[card->rx_in];
struct port *port = &card->ports[desc->stat &
PACKET_PORT_MASK];
struct net_device *dev = port->dev;
if (!skb)
dev->stats.rx_dropped++;
else {
pci_unmap_single(card->pdev, desc->address,
BUFFER_LENGTH,
PCI_DMA_FROMDEVICE);
skb_put(skb, desc->length);
#ifdef DEBUG_PKT
printk(KERN_DEBUG "%s RX(%i):", dev->name,
skb->len);
debug_frame(skb);
#endif
dev->stats.rx_packets++;
dev->stats.rx_bytes += skb->len;
skb->protocol = hdlc_type_trans(skb, dev);
netif_rx(skb);
skb = NULL;
}
if (!skb) {
skb = dev_alloc_skb(BUFFER_LENGTH);
desc->address = skb ?
pci_map_single(card->pdev, skb->data,
BUFFER_LENGTH,
PCI_DMA_FROMDEVICE) : 0;
card->rx_skbs[card->rx_in] = skb;
}
}
desc->stat = PACKET_EMPTY; /* Free descriptor */
card->rx_in = (card->rx_in + 1) % RX_QUEUE_LENGTH;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andrew Morton | 227 | 81.65% | 1 | 14.29% |
| Krzysztof Hałasa | 41 | 14.75% | 2 | 28.57% |
| Himangi Saraogi | 4 | 1.44% | 1 | 14.29% |
| Al Viro | 3 | 1.08% | 1 | 14.29% |
| Joe Perches | 2 | 0.72% | 1 | 14.29% |
| Dave Jones | 1 | 0.36% | 1 | 14.29% |
| Total | 278 | 100.00% | 7 | 100.00% |
static irqreturn_t wanxl_intr(int irq, void* dev_id)
{
struct card *card = dev_id;
int i;
u32 stat;
int handled = 0;
while((stat = readl(card->plx + PLX_DOORBELL_FROM_CARD)) != 0) {
handled = 1;
writel(stat, card->plx + PLX_DOORBELL_FROM_CARD);
for (i = 0; i < card->n_ports; i++) {
if (stat & (1 << (DOORBELL_FROM_CARD_TX_0 + i)))
wanxl_tx_intr(&card->ports[i]);
if (stat & (1 << (DOORBELL_FROM_CARD_CABLE_0 + i)))
wanxl_cable_intr(&card->ports[i]);
}
if (stat & (1 << DOORBELL_FROM_CARD_RX))
wanxl_rx_intr(card);
}
return IRQ_RETVAL(handled);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andrew Morton | 149 | 97.39% | 1 | 33.33% |
| Himangi Saraogi | 2 | 1.31% | 1 | 33.33% |
| Krzysztof Hałasa | 2 | 1.31% | 1 | 33.33% |
| Total | 153 | 100.00% | 3 | 100.00% |
static netdev_tx_t wanxl_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct port *port = dev_to_port(dev);
desc_t *desc;
spin_lock(&port->lock);
desc = &get_status(port)->tx_descs[port->tx_out];
if (desc->stat != PACKET_EMPTY) {
/* should never happen - previous xmit should stop queue */
#ifdef DEBUG_PKT
printk(KERN_DEBUG "%s: transmitter buffer full\n", dev->name);
#endif
netif_stop_queue(dev);
spin_unlock(&port->lock);
return NETDEV_TX_BUSY; /* request packet to be queued */
}
#ifdef DEBUG_PKT
printk(KERN_DEBUG "%s TX(%i):", dev->name, skb->len);
debug_frame(skb);
#endif
port->tx_skbs[port->tx_out] = skb;
desc->address = pci_map_single(port->card->pdev, skb->data, skb->len,
PCI_DMA_TODEVICE);
desc->length = skb->len;
desc->stat = PACKET_FULL;
writel(1 << (DOORBELL_TO_CARD_TX_0 + port->node),
port->card->plx + PLX_DOORBELL_TO_CARD);
port->tx_out = (port->tx_out + 1) % TX_BUFFERS;
if (get_status(port)->tx_descs[port->tx_out].stat != PACKET_EMPTY) {
netif_stop_queue(dev);
#ifdef DEBUG_PKT
printk(KERN_DEBUG "%s: transmitter buffer full\n", dev->name);
#endif
}
spin_unlock(&port->lock);
return NETDEV_TX_OK;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andrew Morton | 237 | 93.31% | 2 | 22.22% |
| Krzysztof Hałasa | 9 | 3.54% | 1 | 11.11% |
| Al Viro | 2 | 0.79% | 1 | 11.11% |
| Himangi Saraogi | 2 | 0.79% | 1 | 11.11% |
| Patrick McHardy | 2 | 0.79% | 2 | 22.22% |
| Stephen Hemminger | 1 | 0.39% | 1 | 11.11% |
| Dan Carpenter | 1 | 0.39% | 1 | 11.11% |
| Total | 254 | 100.00% | 9 | 100.00% |
static int wanxl_attach(struct net_device *dev, unsigned short encoding,
unsigned short parity)
{
struct port *port = dev_to_port(dev);
if (encoding != ENCODING_NRZ &&
encoding != ENCODING_NRZI)
return -EINVAL;
if (parity != PARITY_NONE &&
parity != PARITY_CRC32_PR1_CCITT &&
parity != PARITY_CRC16_PR1_CCITT &&
parity != PARITY_CRC32_PR0_CCITT &&
parity != PARITY_CRC16_PR0_CCITT)
return -EINVAL;
get_status(port)->encoding = encoding;
get_status(port)->parity = parity;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andrew Morton | 81 | 90.00% | 1 | 25.00% |
| Al Viro | 7 | 7.78% | 2 | 50.00% |
| Himangi Saraogi | 2 | 2.22% | 1 | 25.00% |
| Total | 90 | 100.00% | 4 | 100.00% |
static int wanxl_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
{
const size_t size = sizeof(sync_serial_settings);
sync_serial_settings line;
struct port *port = dev_to_port(dev);
if (cmd != SIOCWANDEV)
return hdlc_ioctl(dev, ifr, cmd);
switch (ifr->ifr_settings.type) {
case IF_GET_IFACE:
ifr->ifr_settings.type = IF_IFACE_SYNC_SERIAL;
if (ifr->ifr_settings.size < size) {
ifr->ifr_settings.size = size; /* data size wanted */
return -ENOBUFS;
}
memset(&line, 0, sizeof(line));
line.clock_type = get_status(port)->clocking;
line.clock_rate = 0;
line.loopback = 0;
if (copy_to_user(ifr->ifr_settings.ifs_ifsu.sync, &line, size))
return -EFAULT;
return 0;
case IF_IFACE_SYNC_SERIAL:
if (!capable(CAP_NET_ADMIN))
return -EPERM;
if (dev->flags & IFF_UP)
return -EBUSY;
if (copy_from_user(&line, ifr->ifr_settings.ifs_ifsu.sync,
size))
return -EFAULT;
if (line.clock_type != CLOCK_EXT &&
line.clock_type != CLOCK_TXFROMRX)
return -EINVAL; /* No such clock setting */
if (line.loopback != 0)
return -EINVAL;
get_status(port)->clocking = line.clock_type;
return 0;
default:
return hdlc_ioctl(dev, ifr, cmd);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andrew Morton | 252 | 93.68% | 1 | 25.00% |
| Salva Peiró | 13 | 4.83% | 1 | 25.00% |
| Al Viro | 2 | 0.74% | 1 | 25.00% |
| Himangi Saraogi | 2 | 0.74% | 1 | 25.00% |
| Total | 269 | 100.00% | 4 | 100.00% |
static int wanxl_open(struct net_device *dev)
{
struct port *port = dev_to_port(dev);
u8 __iomem *dbr = port->card->plx + PLX_DOORBELL_TO_CARD;
unsigned long timeout;
int i;
if (get_status(port)->open) {
netdev_err(dev, "port already open\n");
return -EIO;
}
if ((i = hdlc_open(dev)) != 0)
return i;
port->tx_in = port->tx_out = 0;
for (i = 0; i < TX_BUFFERS; i++)
get_status(port)->tx_descs[i].stat = PACKET_EMPTY;
/* signal the card */
writel(1 << (DOORBELL_TO_CARD_OPEN_0 + port->node), dbr);
timeout = jiffies + HZ;
do {
if (get_status(port)->open) {
netif_start_queue(dev);
return 0;
}
} while (time_after(timeout, jiffies));
netdev_err(dev, "unable to open port\n");
/* ask the card to close the port, should it be still alive */
writel(1 << (DOORBELL_TO_CARD_CLOSE_0 + port->node), dbr);
return -EFAULT;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andrew Morton | 174 | 88.32% | 1 | 11.11% |
| Krzysztof Hałasa | 9 | 4.57% | 2 | 22.22% |
| Joe Perches | 6 | 3.05% | 1 | 11.11% |
| Al Viro | 4 | 2.03% | 3 | 33.33% |
| Hannes Eder | 2 | 1.02% | 1 | 11.11% |
| Himangi Saraogi | 2 | 1.02% | 1 | 11.11% |
| Total | 197 | 100.00% | 9 | 100.00% |
static int wanxl_close(struct net_device *dev)
{
struct port *port = dev_to_port(dev);
unsigned long timeout;
int i;
hdlc_close(dev);
/* signal the card */
writel(1 << (DOORBELL_TO_CARD_CLOSE_0 + port->node),
port->card->plx + PLX_DOORBELL_TO_CARD);
timeout = jiffies + HZ;
do {
if (!get_status(port)->open)
break;
} while (time_after(timeout, jiffies));
if (get_status(port)->open)
netdev_err(dev, "unable to close port\n");
netif_stop_queue(dev);
for (i = 0; i < TX_BUFFERS; i++) {
desc_t *desc = &get_status(port)->tx_descs[i];
if (desc->stat != PACKET_EMPTY) {
desc->stat = PACKET_EMPTY;
pci_unmap_single(port->card->pdev, desc->address,
port->tx_skbs[i]->len,
PCI_DMA_TODEVICE);
dev_kfree_skb(port->tx_skbs[i]);
}
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andrew Morton | 173 | 91.53% | 1 | 12.50% |
| Krzysztof Hałasa | 6 | 3.17% | 2 | 25.00% |
| Al Viro | 3 | 1.59% | 2 | 25.00% |
| Joe Perches | 3 | 1.59% | 1 | 12.50% |
| Himangi Saraogi | 2 | 1.06% | 1 | 12.50% |
| Hannes Eder | 2 | 1.06% | 1 | 12.50% |
| Total | 189 | 100.00% | 8 | 100.00% |
static struct net_device_stats *wanxl_get_stats(struct net_device *dev)
{
struct port *port = dev_to_port(dev);
dev->stats.rx_over_errors = get_status(port)->rx_overruns;
dev->stats.rx_frame_errors = get_status(port)->rx_frame_errors;
dev->stats.rx_errors = dev->stats.rx_over_errors +
dev->stats.rx_frame_errors;
return &dev->stats;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andrew Morton | 46 | 63.01% | 1 | 20.00% |
| Krzysztof Hałasa | 18 | 24.66% | 1 | 20.00% |
| Al Viro | 7 | 9.59% | 2 | 40.00% |
| Himangi Saraogi | 2 | 2.74% | 1 | 20.00% |
| Total | 73 | 100.00% | 5 | 100.00% |
static int wanxl_puts_command(struct card *card, u32 cmd)
{
unsigned long timeout = jiffies + 5 * HZ;
writel(cmd, card->plx + PLX_MAILBOX_1);
do {
if (readl(card->plx + PLX_MAILBOX_1) == 0)
return 0;
schedule();
}while (time_after(timeout, jiffies));
return -1;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andrew Morton | 69 | 97.18% | 1 | 50.00% |
| Himangi Saraogi | 2 | 2.82% | 1 | 50.00% |
| Total | 71 | 100.00% | 2 | 100.00% |
static void wanxl_reset(struct card *card)
{
u32 old_value = readl(card->plx + PLX_CONTROL) & ~PLX_CTL_RESET;
writel(0x80, card->plx + PLX_MAILBOX_0);
writel(old_value | PLX_CTL_RESET, card->plx + PLX_CONTROL);
readl(card->plx + PLX_CONTROL); /* wait for posted write */
udelay(1);
writel(old_value, card->plx + PLX_CONTROL);
readl(card->plx + PLX_CONTROL); /* wait for posted write */
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andrew Morton | 84 | 97.67% | 1 | 50.00% |
| Himangi Saraogi | 2 | 2.33% | 1 | 50.00% |
| Total | 86 | 100.00% | 2 | 100.00% |
static void wanxl_pci_remove_one(struct pci_dev *pdev)
{
struct card *card = pci_get_drvdata(pdev);
int i;
for (i = 0; i < card->n_ports; i++) {
unregister_hdlc_device(card->ports[i].dev);
free_netdev(card->ports[i].dev);
}
/* unregister and free all host resources */
if (card->irq)
free_irq(card->irq, card);
wanxl_reset(card);
for (i = 0; i < RX_QUEUE_LENGTH; i++)
if (card->rx_skbs[i]) {
pci_unmap_single(card->pdev,
card->status->rx_descs[i].address,
BUFFER_LENGTH, PCI_DMA_FROMDEVICE);
dev_kfree_skb(card->rx_skbs[i]);
}
if (card->plx)
iounmap(card->plx);
if (card->status)
pci_free_consistent(pdev, sizeof(struct card_status),
card->status, card->status_address);
pci_release_regions(pdev);
pci_disable_device(pdev);
kfree(card);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andrew Morton | 150 | 76.92% | 1 | 20.00% |
| Al Viro | 23 | 11.79% | 2 | 40.00% |
| Krzysztof Hałasa | 18 | 9.23% | 1 | 20.00% |
| Himangi Saraogi | 4 | 2.05% | 1 | 20.00% |
| Total | 195 | 100.00% | 5 | 100.00% |
#include "wanxlfw.inc"
static const struct net_device_ops wanxl_ops = {
.ndo_open = wanxl_open,
.ndo_stop = wanxl_close,
.ndo_start_xmit = hdlc_start_xmit,
.ndo_do_ioctl = wanxl_ioctl,
.ndo_get_stats = wanxl_get_stats,
};
static int wanxl_pci_init_one(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
struct card *card;
u32 ramsize, stat;
unsigned long timeout;
u32 plx_phy; /* PLX PCI base address */
u32 mem_phy; /* memory PCI base addr */
u8 __iomem *mem; /* memory virtual base addr */
int i, ports, alloc_size;
#ifndef MODULE
pr_info_once("%s\n", version);
#endif
i = pci_enable_device(pdev);
if (i)
return i;
/* QUICC can only access first 256 MB of host RAM directly,
but PLX9060 DMA does 32-bits for actual packet data transfers */
/* FIXME when PCI/DMA subsystems are fixed.
We set both dma_mask and consistent_dma_mask to 28 bits
and pray pci_alloc_consistent() will use this info. It should
work on most platforms */
if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(28)) ||
pci_set_dma_mask(pdev, DMA_BIT_MASK(28))) {
pr_err("No usable DMA configuration\n");
pci_disable_device(pdev);
return -EIO;
}
i = pci_request_regions(pdev, "wanXL");
if (i) {
pci_disable_device(pdev);
return i;
}
switch (pdev->device) {
case PCI_DEVICE_ID_SBE_WANXL100: ports = 1; break;
case PCI_DEVICE_ID_SBE_WANXL200: ports = 2; break;
default: ports = 4;
}
alloc_size = sizeof(struct card) + ports * sizeof(struct port);
card = kzalloc(alloc_size, GFP_KERNEL);
if (card == NULL) {
pci_release_regions(pdev);
pci_disable_device(pdev);
return -ENOBUFS;
}
pci_set_drvdata(pdev, card);
card->pdev = pdev;
card->status = pci_alloc_consistent(pdev,
sizeof(struct card_status),
&card->status_address);
if (card->status == NULL) {
wanxl_pci_remove_one(pdev);
return -ENOBUFS;
}
#ifdef DEBUG_PCI
printk(KERN_DEBUG "wanXL %s: pci_alloc_consistent() returned memory"
" at 0x%LX\n", pci_name(pdev),
(unsigned long long)card->status_address);
#endif
/* FIXME when PCI/DMA subsystems are fixed.
We set both dma_mask and consistent_dma_mask back to 32 bits
to indicate the card can do 32-bit DMA addressing */
if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) ||
pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
pr_err("No usable DMA configuration\n");
wanxl_pci_remove_one(pdev);
return -EIO;
}
/* set up PLX mapping */
plx_phy = pci_resource_start(pdev, 0);
card->plx = ioremap_nocache(plx_phy, 0x70);
if (!card->plx) {
pr_err("ioremap() failed\n");
wanxl_pci_remove_one(pdev);
return -EFAULT;
}
#if RESET_WHILE_LOADING
wanxl_reset(card);
#endif
timeout = jiffies + 20 * HZ;
while ((stat = readl(card->plx + PLX_MAILBOX_0)) != 0) {
if (time_before(timeout, jiffies)) {
pr_warn("%s: timeout waiting for PUTS to complete\n",
pci_name(pdev));
wanxl_pci_remove_one(pdev);
return -ENODEV;
}
switch(stat & 0xC0) {
case 0x00: /* hmm - PUTS completed with non-zero code? */
case 0x80: /* PUTS still testing the hardware */
break;
default:
pr_warn("%s: PUTS test 0x%X failed\n",
pci_name(pdev), stat & 0x30);
wanxl_pci_remove_one(pdev);
return -ENODEV;
}
schedule();
}
/* get on-board memory size (PUTS detects no more than 4 MB) */
ramsize = readl(card->plx + PLX_MAILBOX_2) & MBX2_MEMSZ_MASK;
/* set up on-board RAM mapping */
mem_phy = pci_resource_start(pdev, 2);
/* sanity check the board's reported memory size */
if (ramsize < BUFFERS_ADDR +
(TX_BUFFERS + RX_BUFFERS) * BUFFER_LENGTH * ports) {
pr_warn("%s: no enough on-board RAM (%u bytes detected, %u bytes required)\n",
pci_name(pdev), ramsize,
BUFFERS_ADDR +
(TX_BUFFERS + RX_BUFFERS) * BUFFER_LENGTH * ports);
wanxl_pci_remove_one(pdev);
return -ENODEV;
}
if (wanxl_puts_command(card, MBX1_CMD_BSWAP)) {
pr_warn("%s: unable to Set Byte Swap Mode\n", pci_name(pdev));
wanxl_pci_remove_one(pdev);
return -ENODEV;
}
for (i = 0; i < RX_QUEUE_LENGTH; i++) {
struct sk_buff *skb = dev_alloc_skb(BUFFER_LENGTH);
card->rx_skbs[i] = skb;
if (skb)
card->status->rx_descs[i].address =
pci_map_single(card->pdev, skb->data,
BUFFER_LENGTH,
PCI_DMA_FROMDEVICE);
}
mem = ioremap_nocache(mem_phy, PDM_OFFSET + sizeof(firmware));
if (!mem) {
pr_err("ioremap() failed\n");
wanxl_pci_remove_one(pdev);
return -EFAULT;
}
for (i = 0; i < sizeof(firmware); i += 4)
writel(ntohl(*(__be32*)(firmware + i)), mem + PDM_OFFSET + i);
for (i = 0; i < ports; i++)
writel(card->status_address +
(void *)&card->status->port_status[i] -
(void *)card->status, mem + PDM_OFFSET + 4 + i * 4);
writel(card->status_address, mem + PDM_OFFSET + 20);
writel(PDM_OFFSET, mem);
iounmap(mem);
writel(0, card->plx + PLX_MAILBOX_5);
if (wanxl_puts_command(card, MBX1_CMD_ABORTJ)) {
pr_warn("%s: unable to Abort and Jump\n", pci_name(pdev));
wanxl_pci_remove_one(pdev);
return -ENODEV;
}
stat = 0;
timeout = jiffies + 5 * HZ;
do {
if ((stat = readl(card->plx + PLX_MAILBOX_5)) != 0)
break;
schedule();
}while (time_after(timeout, jiffies));
if (!stat) {
pr_warn("%s: timeout while initializing card firmware\n",
pci_name(pdev));
wanxl_pci_remove_one(pdev);
return -ENODEV;
}
#if DETECT_RAM
ramsize = stat;
#endif
pr_info("%s: at 0x%X, %u KB of RAM at 0x%X, irq %u\n",
pci_name(pdev), plx_phy, ramsize / 1024, mem_phy, pdev->irq);
/* Allocate IRQ */
if (request_irq(pdev->irq, wanxl_intr, IRQF_SHARED, "wanXL", card)) {
pr_warn("%s: could not allocate IRQ%i\n",
pci_name(pdev), pdev->irq);
wanxl_pci_remove_one(pdev);
return -EBUSY;
}
card->irq = pdev->irq;
for (i = 0; i < ports; i++) {
hdlc_device *hdlc;
struct port *port = &card->ports[i];
struct net_device *dev = alloc_hdlcdev(port);
if (!dev) {
pr_err("%s: unable to allocate memory\n",
pci_name(pdev));
wanxl_pci_remove_one(pdev);
return -ENOMEM;
}
port->dev = dev;
hdlc = dev_to_hdlc(dev);
spin_lock_init(&port->lock);
dev->tx_queue_len = 50;
dev->netdev_ops = &wanxl_ops;
hdlc->attach = wanxl_attach;
hdlc->xmit = wanxl_xmit;
port->card = card;
port->node = i;
get_status(port)->clocking = CLOCK_EXT;
if (register_hdlc_device(dev)) {
pr_err("%s: unable to register hdlc device\n",
pci_name(pdev));
free_netdev(dev);
wanxl_pci_remove_one(pdev);
return -ENOBUFS;
}
card->n_ports++;
}
pr_info("%s: port", pci_name(pdev));
for (i = 0; i < ports; i++)
pr_cont("%s #%i: %s",
i ? "," : "", i, card->ports[i].dev->name);
pr_cont("\n");
for (i = 0; i < ports; i++)
wanxl_cable_intr(&card->ports[i]); /* get carrier status etc.*/
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andrew Morton | 888 | 70.53% | 2 | 12.50% |
| Krzysztof Hałasa | 174 | 13.82% | 3 | 18.75% |
| Al Viro | 119 | 9.45% | 3 | 18.75% |
| Joe Perches | 33 | 2.62% | 1 | 6.25% |
| Yang Hongyang | 16 | 1.27% | 2 | 12.50% |
| Dave Jones | 12 | 0.95% | 1 | 6.25% |
| Himangi Saraogi | 10 | 0.79% | 1 | 6.25% |
| Saurabh Sengar | 5 | 0.40% | 1 | 6.25% |
| Thomas Gleixner | 1 | 0.08% | 1 | 6.25% |
| Yoann Padioleau | 1 | 0.08% | 1 | 6.25% |
| Total | 1259 | 100.00% | 16 | 100.00% |
static const struct pci_device_id wanxl_pci_tbl[] = {
{ PCI_VENDOR_ID_SBE, PCI_DEVICE_ID_SBE_WANXL100, PCI_ANY_ID,
PCI_ANY_ID, 0, 0, 0 },
{ PCI_VENDOR_ID_SBE, PCI_DEVICE_ID_SBE_WANXL200, PCI_ANY_ID,
PCI_ANY_ID, 0, 0, 0 },
{ PCI_VENDOR_ID_SBE, PCI_DEVICE_ID_SBE_WANXL400, PCI_ANY_ID,
PCI_ANY_ID, 0, 0, 0 },
{ 0, }
};
static struct pci_driver wanxl_pci_driver = {
.name = "wanXL",
.id_table = wanxl_pci_tbl,
.probe = wanxl_pci_init_one,
.remove = wanxl_pci_remove_one,
};
static int __init wanxl_init_module(void)
{
#ifdef MODULE
pr_info("%s\n", version);
#endif
return pci_register_driver(&wanxl_pci_driver);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andrew Morton | 26 | 92.86% | 1 | 33.33% |
| Jeff Garzik | 1 | 3.57% | 1 | 33.33% |
| Joe Perches | 1 | 3.57% | 1 | 33.33% |
| Total | 28 | 100.00% | 3 | 100.00% |
static void __exit wanxl_cleanup_module(void)
{
pci_unregister_driver(&wanxl_pci_driver);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andrew Morton | 15 | 100.00% | 1 | 100.00% |
| Total | 15 | 100.00% | 1 | 100.00% |
MODULE_AUTHOR("Krzysztof Halasa <khc@pm.waw.pl>");
MODULE_DESCRIPTION("SBE Inc. wanXL serial port driver");
MODULE_LICENSE("GPL v2");
MODULE_DEVICE_TABLE(pci, wanxl_pci_tbl);
module_init(wanxl_init_module);
module_exit(wanxl_cleanup_module);
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andrew Morton | 3367 | 82.22% | 3 | 8.33% |
| Krzysztof Hałasa | 343 | 8.38% | 6 | 16.67% |
| Al Viro | 198 | 4.84% | 9 | 25.00% |
| Himangi Saraogi | 58 | 1.42% | 1 | 2.78% |
| Joe Perches | 57 | 1.39% | 1 | 2.78% |
| Yang Hongyang | 16 | 0.39% | 2 | 5.56% |
| Dave Jones | 15 | 0.37% | 1 | 2.78% |
| Salva Peiró | 13 | 0.32% | 1 | 2.78% |
| Benoit Taine | 6 | 0.15% | 1 | 2.78% |
| Saurabh Sengar | 5 | 0.12% | 1 | 2.78% |
| Hannes Eder | 4 | 0.10% | 1 | 2.78% |
| Domen Puncer | 3 | 0.07% | 1 | 2.78% |
| Alexey Dobriyan | 3 | 0.07% | 1 | 2.78% |
| Patrick McHardy | 2 | 0.05% | 2 | 5.56% |
| Jeff Garzik | 1 | 0.02% | 1 | 2.78% |
| Stephen Hemminger | 1 | 0.02% | 1 | 2.78% |
| Yoann Padioleau | 1 | 0.02% | 1 | 2.78% |
| Thomas Gleixner | 1 | 0.02% | 1 | 2.78% |
| Dan Carpenter | 1 | 0.02% | 1 | 2.78% |
| Total | 4095 | 100.00% | 36 | 100.00% |
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