* parport-sharing awareness code by Philip Blundell.
* SMP locking by Niibe Yutaka.
* Support for parallel ports with no IRQ (poll mode),
- * Modifications to use the parallel port API
+ * Modifications to use the parallel port API
* by Nimrod Zimerman.
*
* Fixes:
#include <linux/in.h>
#include <linux/errno.h>
#include <linux/delay.h>
-#include <linux/lp.h>
#include <linux/init.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/if_plip.h>
#include <linux/workqueue.h>
-#include <linux/ioport.h>
#include <linux/spinlock.h>
+#include <linux/completion.h>
#include <linux/parport.h>
#include <linux/bitops.h>
#include <asm/system.h>
#include <asm/irq.h>
#include <asm/byteorder.h>
-#include <asm/semaphore.h>
/* Maximum number of devices to support. */
#define PLIP_MAX 8
#ifndef NET_DEBUG
#define NET_DEBUG 1
#endif
-static unsigned int net_debug = NET_DEBUG;
+static const unsigned int net_debug = NET_DEBUG;
#define ENABLE(irq) if (irq != -1) enable_irq(irq)
#define DISABLE(irq) if (irq != -1) disable_irq(irq)
#define PLIP_NIBBLE_WAIT 3000
/* Bottom halves */
-static void plip_kick_bh(struct net_device *dev);
-static void plip_bh(struct net_device *dev);
-static void plip_timer_bh(struct net_device *dev);
+static void plip_kick_bh(struct work_struct *work);
+static void plip_bh(struct work_struct *work);
+static void plip_timer_bh(struct work_struct *work);
/* Interrupt handler */
-static void plip_interrupt(int irq, void *dev_id, struct pt_regs *regs);
+static void plip_interrupt(void *dev_id);
/* Functions for DEV methods */
static int plip_tx_packet(struct sk_buff *skb, struct net_device *dev);
static int plip_hard_header(struct sk_buff *skb, struct net_device *dev,
- unsigned short type, void *daddr,
- void *saddr, unsigned len);
-static int plip_hard_header_cache(struct neighbour *neigh,
+ unsigned short type, const void *daddr,
+ const void *saddr, unsigned len);
+static int plip_hard_header_cache(const struct neighbour *neigh,
struct hh_cache *hh);
static int plip_open(struct net_device *dev);
static int plip_close(struct net_device *dev);
-static struct net_device_stats *plip_get_stats(struct net_device *dev);
static int plip_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd);
static int plip_preempt(void *handle);
static void plip_wakeup(void *handle);
-\f
+
enum plip_connection_state {
PLIP_CN_NONE=0,
PLIP_CN_RECEIVE,
};
struct net_local {
- struct net_device_stats enet_stats;
+ struct net_device *dev;
struct work_struct immediate;
- struct work_struct deferred;
- struct work_struct timer;
+ struct delayed_work deferred;
+ struct delayed_work timer;
struct plip_local snd_data;
struct plip_local rcv_data;
struct pardevice *pardev;
int is_deferred;
int port_owner;
int should_relinquish;
- int (*orig_hard_header)(struct sk_buff *skb, struct net_device *dev,
- unsigned short type, void *daddr,
- void *saddr, unsigned len);
- int (*orig_hard_header_cache)(struct neighbour *neigh,
- struct hh_cache *hh);
spinlock_t lock;
atomic_t kill_timer;
- struct semaphore killed_timer_sem;
+ struct completion killed_timer_cmp;
};
-\f
-inline static void enable_parport_interrupts (struct net_device *dev)
+
+static inline void enable_parport_interrupts (struct net_device *dev)
{
if (dev->irq != -1)
{
}
}
-inline static void disable_parport_interrupts (struct net_device *dev)
+static inline void disable_parport_interrupts (struct net_device *dev)
{
if (dev->irq != -1)
{
}
}
-inline static void write_data (struct net_device *dev, unsigned char data)
+static inline void write_data (struct net_device *dev, unsigned char data)
{
struct parport *port =
((struct net_local *)dev->priv)->pardev->port;
port->ops->write_data (port, data);
}
-inline static unsigned char read_status (struct net_device *dev)
+static inline unsigned char read_status (struct net_device *dev)
{
struct parport *port =
((struct net_local *)dev->priv)->pardev->port;
return port->ops->read_status (port);
}
-\f
+
+static const struct header_ops plip_header_ops = {
+ .create = plip_hard_header,
+ .cache = plip_hard_header_cache,
+};
+
/* Entry point of PLIP driver.
Probe the hardware, and register/initialize the driver.
dev->hard_start_xmit = plip_tx_packet;
dev->open = plip_open;
dev->stop = plip_close;
- dev->get_stats = plip_get_stats;
dev->do_ioctl = plip_ioctl;
- dev->header_cache_update = NULL;
+
dev->tx_queue_len = 10;
dev->flags = IFF_POINTOPOINT|IFF_NOARP;
memset(dev->dev_addr, 0xfc, ETH_ALEN);
- /* Set the private structure */
- nl->orig_hard_header = dev->hard_header;
- dev->hard_header = plip_hard_header;
-
- nl->orig_hard_header_cache = dev->hard_header_cache;
- dev->hard_header_cache = plip_hard_header_cache;
+ dev->header_ops = &plip_header_ops;
nl->port_owner = 0;
nl->nibble = PLIP_NIBBLE_WAIT;
/* Initialize task queue structures */
- INIT_WORK(&nl->immediate, (void (*)(void *))plip_bh, dev);
- INIT_WORK(&nl->deferred, (void (*)(void *))plip_kick_bh, dev);
+ INIT_WORK(&nl->immediate, plip_bh);
+ INIT_DELAYED_WORK(&nl->deferred, plip_kick_bh);
if (dev->irq == -1)
- INIT_WORK(&nl->timer, (void (*)(void *))plip_timer_bh, dev);
+ INIT_DELAYED_WORK(&nl->timer, plip_timer_bh);
spin_lock_init(&nl->lock);
}
-\f
+
/* Bottom half handler for the delayed request.
This routine is kicked by do_timer().
Request `plip_bh' to be invoked. */
static void
-plip_kick_bh(struct net_device *dev)
+plip_kick_bh(struct work_struct *work)
{
- struct net_local *nl = netdev_priv(dev);
+ struct net_local *nl =
+ container_of(work, struct net_local, deferred.work);
if (nl->is_deferred)
schedule_work(&nl->immediate);
typedef int (*plip_func)(struct net_device *dev, struct net_local *nl,
struct plip_local *snd, struct plip_local *rcv);
-static plip_func connection_state_table[] =
+static const plip_func connection_state_table[] =
{
plip_none,
plip_receive_packet,
/* Bottom half handler of PLIP. */
static void
-plip_bh(struct net_device *dev)
+plip_bh(struct work_struct *work)
{
- struct net_local *nl = netdev_priv(dev);
+ struct net_local *nl = container_of(work, struct net_local, immediate);
struct plip_local *snd = &nl->snd_data;
struct plip_local *rcv = &nl->rcv_data;
plip_func f;
nl->is_deferred = 0;
f = connection_state_table[nl->connection];
- if ((r = (*f)(dev, nl, snd, rcv)) != OK
- && (r = plip_bh_timeout_error(dev, nl, snd, rcv, r)) != OK) {
+ if ((r = (*f)(nl->dev, nl, snd, rcv)) != OK
+ && (r = plip_bh_timeout_error(nl->dev, nl, snd, rcv, r)) != OK) {
nl->is_deferred = 1;
schedule_delayed_work(&nl->deferred, 1);
}
}
static void
-plip_timer_bh(struct net_device *dev)
+plip_timer_bh(struct work_struct *work)
{
- struct net_local *nl = netdev_priv(dev);
-
+ struct net_local *nl =
+ container_of(work, struct net_local, timer.work);
+
if (!(atomic_read (&nl->kill_timer))) {
- plip_interrupt (-1, dev, NULL);
+ plip_interrupt (nl->dev);
schedule_delayed_work(&nl->timer, 1);
}
else {
- up (&nl->killed_timer_sem);
+ complete(&nl->killed_timer_cmp);
}
}
dev->name, snd->state, c0);
} else
error = HS_TIMEOUT;
- nl->enet_stats.tx_errors++;
- nl->enet_stats.tx_aborted_errors++;
+ dev->stats.tx_errors++;
+ dev->stats.tx_aborted_errors++;
} else if (nl->connection == PLIP_CN_RECEIVE) {
if (rcv->state == PLIP_PK_TRIGGER) {
/* Transmission was interrupted. */
printk(KERN_WARNING "%s: receive timeout(%d,%02x)\n",
dev->name, rcv->state, c0);
}
- nl->enet_stats.rx_dropped++;
+ dev->stats.rx_dropped++;
}
rcv->state = PLIP_PK_DONE;
if (rcv->skb) {
return TIMEOUT;
}
-\f
+
static int
plip_none(struct net_device *dev, struct net_local *nl,
struct plip_local *snd, struct plip_local *rcv)
/* PLIP_RECEIVE --- receive a byte(two nibbles)
Returns OK on success, TIMEOUT on timeout */
-inline static int
+static inline int
plip_receive(unsigned short nibble_timeout, struct net_device *dev,
enum plip_nibble_state *ns_p, unsigned char *data_p)
{
}
/*
- * Determine the packet's protocol ID. The rule here is that we
+ * Determine the packet's protocol ID. The rule here is that we
* assume 802.3 if the type field is short enough to be a length.
* This is normal practice and works for any 'now in use' protocol.
*
* We can't fix the daddr thing as that quirk (more bug) is embedded
* in far too many old systems not all even running Linux.
*/
-
-static unsigned short plip_type_trans(struct sk_buff *skb, struct net_device *dev)
+
+static __be16 plip_type_trans(struct sk_buff *skb, struct net_device *dev)
{
struct ethhdr *eth;
unsigned char *rawp;
-
- skb->mac.raw=skb->data;
+
+ skb_reset_mac_header(skb);
skb_pull(skb,dev->hard_header_len);
eth = eth_hdr(skb);
-
+
if(*eth->h_dest&1)
{
if(memcmp(eth->h_dest,dev->broadcast, ETH_ALEN)==0)
else
skb->pkt_type=PACKET_MULTICAST;
}
-
+
/*
* This ALLMULTI check should be redundant by 1.4
* so don't forget to remove it.
*/
-
+
if (ntohs(eth->h_proto) >= 1536)
return eth->h_proto;
-
+
rawp = skb->data;
-
+
/*
* This is a magic hack to spot IPX packets. Older Novell breaks
* the protocol design and runs IPX over 802.3 without an 802.2 LLC
*/
if (*(unsigned short *)rawp == 0xFFFF)
return htons(ETH_P_802_3);
-
+
/*
* Real 802.2 LLC
*/
return htons(ETH_P_802_2);
}
-
/* PLIP_RECEIVE_PACKET --- receive a packet */
static int
plip_receive_packet(struct net_device *dev, struct net_local *nl,
&rcv->nibble, &rcv->data))
return TIMEOUT;
if (rcv->data != rcv->checksum) {
- nl->enet_stats.rx_crc_errors++;
+ dev->stats.rx_crc_errors++;
if (net_debug)
printk(KERN_DEBUG "%s: checksum error\n", dev->name);
return ERROR;
case PLIP_PK_DONE:
/* Inform the upper layer for the arrival of a packet. */
rcv->skb->protocol=plip_type_trans(rcv->skb, dev);
- netif_rx(rcv->skb);
+ netif_rx_ni(rcv->skb);
dev->last_rx = jiffies;
- nl->enet_stats.rx_bytes += rcv->length.h;
- nl->enet_stats.rx_packets++;
+ dev->stats.rx_bytes += rcv->length.h;
+ dev->stats.rx_packets++;
rcv->skb = NULL;
if (net_debug > 2)
printk(KERN_DEBUG "%s: receive end\n", dev->name);
/* PLIP_SEND --- send a byte (two nibbles)
Returns OK on success, TIMEOUT when timeout */
-inline static int
+static inline int
plip_send(unsigned short nibble_timeout, struct net_device *dev,
enum plip_nibble_state *ns_p, unsigned char data)
{
if (nl->connection == PLIP_CN_RECEIVE) {
spin_unlock_irq(&nl->lock);
/* Interrupted. */
- nl->enet_stats.collisions++;
+ dev->stats.collisions++;
return OK;
}
c0 = read_status(dev);
{enable,disable}_irq *counts*
them. -- AV */
ENABLE(dev->irq);
- nl->enet_stats.collisions++;
+ dev->stats.collisions++;
return OK;
}
disable_parport_interrupts (dev);
&snd->nibble, snd->checksum))
return TIMEOUT;
- nl->enet_stats.tx_bytes += snd->skb->len;
+ dev->stats.tx_bytes += snd->skb->len;
dev_kfree_skb(snd->skb);
- nl->enet_stats.tx_packets++;
+ dev->stats.tx_packets++;
snd->state = PLIP_PK_DONE;
case PLIP_PK_DONE:
return OK;
}
-\f
+
/* Handle the parallel port interrupts. */
static void
-plip_interrupt(int irq, void *dev_id, struct pt_regs * regs)
+plip_interrupt(void *dev_id)
{
struct net_device *dev = dev_id;
struct net_local *nl;
struct plip_local *rcv;
unsigned char c0;
- if (dev == NULL) {
- printk(KERN_DEBUG "plip_interrupt: irq %d for unknown device.\n", irq);
- return;
- }
-
nl = netdev_priv(dev);
rcv = &nl->rcv_data;
spin_unlock_irq(&nl->lock);
}
-\f
+
static int
plip_tx_packet(struct sk_buff *skb, struct net_device *dev)
{
}
netif_stop_queue (dev);
-
+
if (skb->len > dev->mtu + dev->hard_header_len) {
printk(KERN_WARNING "%s: packet too big, %d.\n", dev->name, (int)skb->len);
netif_start_queue (dev);
}
schedule_work(&nl->immediate);
spin_unlock_irq(&nl->lock);
-
+
return 0;
}
static void
-plip_rewrite_address(struct net_device *dev, struct ethhdr *eth)
+plip_rewrite_address(const struct net_device *dev, struct ethhdr *eth)
{
- struct in_device *in_dev;
+ const struct in_device *in_dev = dev->ip_ptr;
- if ((in_dev=dev->ip_ptr) != NULL) {
+ if (in_dev) {
/* Any address will do - we take the first */
- struct in_ifaddr *ifa=in_dev->ifa_list;
- if (ifa != NULL) {
+ const struct in_ifaddr *ifa = in_dev->ifa_list;
+ if (ifa) {
memcpy(eth->h_source, dev->dev_addr, 6);
memset(eth->h_dest, 0xfc, 2);
memcpy(eth->h_dest+2, &ifa->ifa_address, 4);
static int
plip_hard_header(struct sk_buff *skb, struct net_device *dev,
- unsigned short type, void *daddr,
- void *saddr, unsigned len)
+ unsigned short type, const void *daddr,
+ const void *saddr, unsigned len)
{
- struct net_local *nl = netdev_priv(dev);
int ret;
- if ((ret = nl->orig_hard_header(skb, dev, type, daddr, saddr, len)) >= 0)
+ ret = eth_header(skb, dev, type, daddr, saddr, len);
+ if (ret >= 0)
plip_rewrite_address (dev, (struct ethhdr *)skb->data);
return ret;
}
-int plip_hard_header_cache(struct neighbour *neigh,
+int plip_hard_header_cache(const struct neighbour *neigh,
struct hh_cache *hh)
{
- struct net_local *nl = neigh->dev->priv;
int ret;
-
- if ((ret = nl->orig_hard_header_cache(neigh, hh)) == 0)
- {
+
+ ret = eth_header_cache(neigh, hh);
+ if (ret == 0) {
struct ethhdr *eth;
eth = (struct ethhdr*)(((u8*)hh->hh_data) +
HH_DATA_OFF(sizeof(*eth)));
plip_rewrite_address (neigh->dev, eth);
}
-
+
return ret;
-}
+}
/* Open/initialize the board. This is called (in the current kernel)
sometime after booting when the 'ifconfig' program is run.
if (dev->irq == -1)
{
- init_MUTEX_LOCKED (&nl->killed_timer_sem);
+ init_completion(&nl->killed_timer_cmp);
atomic_set (&nl->kill_timer, 1);
- down (&nl->killed_timer_sem);
+ wait_for_completion(&nl->killed_timer_cmp);
}
#ifdef NOTDEF
else
return;
}
-
+
if (!(dev->flags & IFF_UP))
/* Don't need the port when the interface is down */
return;
return;
}
-static struct net_device_stats *
-plip_get_stats(struct net_device *dev)
-{
- struct net_local *nl = netdev_priv(dev);
- struct net_device_stats *r = &nl->enet_stats;
-
- return r;
-}
-
static int
plip_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
{
}
return 0;
}
-\f
+
static int parport[PLIP_MAX] = { [0 ... PLIP_MAX-1] = -1 };
static int timid;
struct net_local *nl;
char name[IFNAMSIZ];
- if ((parport[0] == -1 && (!timid || !port->devices)) ||
+ if ((parport[0] == -1 && (!timid || !port->devices)) ||
plip_searchfor(parport, port->number)) {
if (unit == PLIP_MAX) {
printk(KERN_ERR "plip: too many devices\n");
printk(KERN_ERR "plip: memory squeeze\n");
return;
}
-
+
strcpy(dev->name, name);
- SET_MODULE_OWNER(dev);
dev->irq = port->irq;
dev->base_addr = port->base;
if (port->irq == -1) {
}
nl = netdev_priv(dev);
- nl->pardev = parport_register_device(port, name, plip_preempt,
- plip_wakeup, plip_interrupt,
+ nl->dev = dev;
+ nl->pardev = parport_register_device(port, dev->name, plip_preempt,
+ plip_wakeup, plip_interrupt,
0, dev);
if (!nl->pardev) {
/* disable driver on "plip=" or "plip=0" */
parport[0] = -2;
} else {
- printk(KERN_WARNING "warning: 'plip=0x%x' ignored\n",
+ printk(KERN_WARNING "warning: 'plip=0x%x' ignored\n",
ints[1]);
}
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff