#define HW_REVID_MASK HW_REVID(1, 1, 1, 1, 1, 1, 1)
/* directly indexed by chip_t, above */
-const static struct {
+static const struct {
const char *name;
u32 version; /* from RTL8139C/RTL8139D docs */
u32 flags;
dma_addr_t tx_bufs_dma;
signed char phys[4]; /* MII device addresses. */
char twistie, twist_row, twist_col; /* Twister tune state. */
- unsigned int default_port:4; /* Last dev->if_port value. */
+ unsigned int watchdog_fired : 1;
+ unsigned int default_port : 4; /* Last dev->if_port value. */
+ unsigned int have_thread : 1;
spinlock_t lock;
spinlock_t rx_lock;
chip_t chipset;
- pid_t thr_pid;
- wait_queue_head_t thr_wait;
- struct completion thr_exited;
u32 rx_config;
struct rtl_extra_stats xstats;
- int time_to_die;
+
+ struct work_struct thread;
+
struct mii_if_info mii;
unsigned int regs_len;
unsigned long fifo_copy_timeout;
static int mdio_read (struct net_device *dev, int phy_id, int location);
static void mdio_write (struct net_device *dev, int phy_id, int location,
int val);
-static void rtl8139_start_thread(struct net_device *dev);
+static void rtl8139_start_thread(struct rtl8139_private *tp);
static void rtl8139_tx_timeout (struct net_device *dev);
static void rtl8139_init_ring (struct net_device *dev);
static int rtl8139_start_xmit (struct sk_buff *skb,
static void rtl8139_set_rx_mode (struct net_device *dev);
static void __set_rx_mode (struct net_device *dev);
static void rtl8139_hw_start (struct net_device *dev);
+static void rtl8139_thread (void *_data);
+static void rtl8139_tx_timeout_task(void *_data);
static struct ethtool_ops rtl8139_ethtool_ops;
/* write MMIO register, with flush */
(debug < 0 ? RTL8139_DEF_MSG_ENABLE : ((1 << debug) - 1));
spin_lock_init (&tp->lock);
spin_lock_init (&tp->rx_lock);
- init_waitqueue_head (&tp->thr_wait);
- init_completion (&tp->thr_exited);
+ INIT_WORK(&tp->thread, rtl8139_thread, dev);
tp->mii.dev = dev;
tp->mii.mdio_read = mdio_read;
tp->mii.mdio_write = mdio_write;
dev->irq, RTL_R8 (MediaStatus),
tp->mii.full_duplex ? "full" : "half");
- rtl8139_start_thread(dev);
+ rtl8139_start_thread(tp);
return 0;
}
RTL_R8 (Config1));
}
-static int rtl8139_thread (void *data)
+static void rtl8139_thread (void *_data)
{
- struct net_device *dev = data;
+ struct net_device *dev = _data;
struct rtl8139_private *tp = netdev_priv(dev);
- unsigned long timeout;
-
- daemonize("%s", dev->name);
- allow_signal(SIGTERM);
-
- while (1) {
- timeout = next_tick;
- do {
- timeout = interruptible_sleep_on_timeout (&tp->thr_wait, timeout);
- /* make swsusp happy with our thread */
- try_to_freeze();
- } while (!signal_pending (current) && (timeout > 0));
-
- if (signal_pending (current)) {
- flush_signals(current);
- }
-
- if (tp->time_to_die)
- break;
+ unsigned long thr_delay = next_tick;
- if (rtnl_lock_interruptible ())
- break;
+ if (tp->watchdog_fired) {
+ tp->watchdog_fired = 0;
+ rtl8139_tx_timeout_task(_data);
+ } else if (rtnl_shlock_nowait() == 0) {
rtl8139_thread_iter (dev, tp, tp->mmio_addr);
rtnl_unlock ();
+ } else {
+ /* unlikely race. mitigate with fast poll. */
+ thr_delay = HZ / 2;
}
- complete_and_exit (&tp->thr_exited, 0);
+ schedule_delayed_work(&tp->thread, thr_delay);
}
-static void rtl8139_start_thread(struct net_device *dev)
+static void rtl8139_start_thread(struct rtl8139_private *tp)
{
- struct rtl8139_private *tp = netdev_priv(dev);
-
- tp->thr_pid = -1;
tp->twistie = 0;
- tp->time_to_die = 0;
if (tp->chipset == CH_8139_K)
tp->twistie = 1;
else if (tp->drv_flags & HAS_LNK_CHNG)
return;
- tp->thr_pid = kernel_thread(rtl8139_thread, dev, CLONE_FS|CLONE_FILES);
- if (tp->thr_pid < 0) {
- printk (KERN_WARNING "%s: unable to start kernel thread\n",
- dev->name);
- }
+ tp->have_thread = 1;
+
+ schedule_delayed_work(&tp->thread, next_tick);
+}
+
+static void rtl8139_stop_thread(struct rtl8139_private *tp)
+{
+ if (tp->have_thread) {
+ cancel_rearming_delayed_work(&tp->thread);
+ tp->have_thread = 0;
+ } else
+ flush_scheduled_work();
}
static inline void rtl8139_tx_clear (struct rtl8139_private *tp)
/* XXX account for unsent Tx packets in tp->stats.tx_dropped */
}
-
-static void rtl8139_tx_timeout (struct net_device *dev)
+static void rtl8139_tx_timeout_task (void *_data)
{
+ struct net_device *dev = _data;
struct rtl8139_private *tp = netdev_priv(dev);
void __iomem *ioaddr = tp->mmio_addr;
int i;
u8 tmp8;
- unsigned long flags;
printk (KERN_DEBUG "%s: Transmit timeout, status %2.2x %4.4x %4.4x "
"media %2.2x.\n", dev->name, RTL_R8 (ChipCmd),
if (tmp8 & CmdTxEnb)
RTL_W8 (ChipCmd, CmdRxEnb);
- spin_lock(&tp->rx_lock);
+ spin_lock_bh(&tp->rx_lock);
/* Disable interrupts by clearing the interrupt mask. */
RTL_W16 (IntrMask, 0x0000);
/* Stop a shared interrupt from scavenging while we are. */
- spin_lock_irqsave (&tp->lock, flags);
+ spin_lock_irq(&tp->lock);
rtl8139_tx_clear (tp);
- spin_unlock_irqrestore (&tp->lock, flags);
+ spin_unlock_irq(&tp->lock);
/* ...and finally, reset everything */
if (netif_running(dev)) {
rtl8139_hw_start (dev);
netif_wake_queue (dev);
}
- spin_unlock(&tp->rx_lock);
+ spin_unlock_bh(&tp->rx_lock);
}
+static void rtl8139_tx_timeout (struct net_device *dev)
+{
+ struct rtl8139_private *tp = netdev_priv(dev);
+
+ if (!tp->have_thread) {
+ INIT_WORK(&tp->thread, rtl8139_tx_timeout_task, dev);
+ schedule_delayed_work(&tp->thread, next_tick);
+ } else
+ tp->watchdog_fired = 1;
+
+}
static int rtl8139_start_xmit (struct sk_buff *skb, struct net_device *dev)
{
{
struct rtl8139_private *tp = netdev_priv(dev);
void __iomem *ioaddr = tp->mmio_addr;
- int ret = 0;
unsigned long flags;
netif_stop_queue (dev);
- if (tp->thr_pid >= 0) {
- tp->time_to_die = 1;
- wmb();
- ret = kill_proc (tp->thr_pid, SIGTERM, 1);
- if (ret) {
- printk (KERN_ERR "%s: unable to signal thread\n", dev->name);
- return ret;
- }
- wait_for_completion (&tp->thr_exited);
- }
-
+ rtl8139_stop_thread(tp);
+
if (netif_msg_ifdown(tp))
printk(KERN_DEBUG "%s: Shutting down ethercard, status was 0x%4.4x.\n",
dev->name, RTL_R16 (IntrStatus));
projects / powerpc.git / blobdiff