diff -Nurp patch4/drivers/net/s2io.c patch5/drivers/net/s2io.c
--- patch4/drivers/net/s2io.c 2007-08-15 08:42:14.000000000 -0700
+++ patch5/drivers/net/s2io.c 2007-08-15 08:42:51.000000000 -0700
@@ -84,7 +84,7 @@
#include "s2io.h"
#include "s2io-regs.h"
-#define DRV_VERSION "2.0.26.1"
+#define DRV_VERSION "2.0.26.2"
/* S2io Driver name & version. */
static char s2io_driver_name[] = "Neterion";
@@ -4917,71 +4917,76 @@ static irqreturn_t s2io_isr(int irq, voi
* 1. Rx of packet.
* 2. Tx complete.
* 3. Link down.
- * 4. Error in any functional blocks of the NIC.
*/
reason = readq(&bar0->general_int_status);
- if (!reason) {
- /* The interrupt was not raised by us. */
+ if (unlikely(reason == S2IO_MINUS_ONE) ) {
+ /* Nothing much can be done. Get out */
atomic_dec(&sp->isr_cnt);
- return IRQ_NONE;
- }
- else if (unlikely(reason == S2IO_MINUS_ONE) ) {
- /* Disable device and get out */
- atomic_dec(&sp->isr_cnt);
- return IRQ_NONE;
+ return IRQ_HANDLED;
}
- if (napi) {
- if (reason & GEN_INTR_RXTRAFFIC) {
- if ( likely ( netif_rx_schedule_prep(dev)) ) {
- __netif_rx_schedule(dev);
- writeq(S2IO_MINUS_ONE, &bar0->rx_traffic_mask);
+ if (reason & (GEN_INTR_RXTRAFFIC |
+ GEN_INTR_TXTRAFFIC | GEN_INTR_TXPIC))
+ {
+ writeq(S2IO_MINUS_ONE, &bar0->general_int_mask);
+
+ if (config->napi) {
+ if (reason & GEN_INTR_RXTRAFFIC) {
+ if ( likely (netif_rx_schedule_prep(dev)) ) {
+ __netif_rx_schedule(dev);
+ writeq(S2IO_MINUS_ONE,
+ &bar0->rx_traffic_mask);
+ } else
+ writeq(S2IO_MINUS_ONE,
+ &bar0->rx_traffic_int);
}
- else
+ } else {
+ /*
+ * rx_traffic_int reg is an R1 register, writing all 1's
+ * will ensure that the actual interrupt causing bit
+ * get's cleared and hence a read can be avoided.
+ */
+ if (reason & GEN_INTR_RXTRAFFIC)
writeq(S2IO_MINUS_ONE, &bar0->rx_traffic_int);
+
+ for (i = 0; i < config->rx_ring_num; i++)
+ rx_intr_handler(&mac_control->rings[i]);
}
- } else {
+
/*
- * Rx handler is called by default, without checking for the
- * cause of interrupt.
- * rx_traffic_int reg is an R1 register, writing all 1's
+ * tx_traffic_int reg is an R1 register, writing all 1's
* will ensure that the actual interrupt causing bit get's
* cleared and hence a read can be avoided.
*/
- if (reason & GEN_INTR_RXTRAFFIC)
- writeq(S2IO_MINUS_ONE, &bar0->rx_traffic_int);
+ if (reason & GEN_INTR_TXTRAFFIC)
+ writeq(S2IO_MINUS_ONE, &bar0->tx_traffic_int);
- for (i = 0; i < config->rx_ring_num; i++) {
- rx_intr_handler(&mac_control->rings[i]);
- }
- }
+ for (i = 0; i < config->tx_fifo_num; i++)
+ tx_intr_handler(&mac_control->fifos[i]);
- /*
- * tx_traffic_int reg is an R1 register, writing all 1's
- * will ensure that the actual interrupt causing bit get's
- * cleared and hence a read can be avoided.
- */
- if (reason & GEN_INTR_TXTRAFFIC)
- writeq(S2IO_MINUS_ONE, &bar0->tx_traffic_int);
+ if (reason & GEN_INTR_TXPIC)
+ s2io_txpic_intr_handle(sp);
- for (i = 0; i < config->tx_fifo_num; i++)
- tx_intr_handler(&mac_control->fifos[i]);
+ /*
+ * Reallocate the buffers from the interrupt handler itself.
+ */
+ if (!config->napi) {
+ for (i = 0; i < config->rx_ring_num; i++)
+ s2io_chk_rx_buffers(sp, i);
+ }
+ writeq(sp->general_int_mask, &bar0->general_int_mask);
+ readl(&bar0->general_int_status);
- if (reason & GEN_INTR_TXPIC)
- s2io_txpic_intr_handle(sp);
- /*
- * If the Rx buffer count is below the panic threshold then
- * reallocate the buffers from the interrupt handler itself,
- * else schedule a tasklet to reallocate the buffers.
- */
- if (!napi) {
- for (i = 0; i < config->rx_ring_num; i++)
- s2io_chk_rx_buffers(sp, i);
- }
+ atomic_dec(&sp->isr_cnt);
+ return IRQ_HANDLED;
- writeq(0, &bar0->general_int_mask);
- readl(&bar0->general_int_status);
+ }
+ else if (!reason) {
+ /* The interrupt was not raised by us */
+ atomic_dec(&sp->isr_cnt);
+ return IRQ_NONE;
+ }
atomic_dec(&sp->isr_cnt);
return IRQ_HANDLED;
@@ -7109,6 +7114,14 @@ static void s2io_rem_isr(struct s2io_nic
struct net_device *dev = sp->dev;
struct swStat *stats = &sp->mac_control.stats_info->sw_stat;
+ /* Waiting till all Interrupt handlers are complete */
+ do {
+ if (!atomic_read(&sp->isr_cnt))
+ break;
+ msleep(10);
+ cnt++;
+ } while(cnt < 5);
+
if (sp->config.intr_type == MSI_X) {
int i;
u16 msi_control;
@@ -7138,14 +7151,6 @@ static void s2io_rem_isr(struct s2io_nic
} else {
free_irq(sp->pdev->irq, dev);
}
- /* Waiting till all Interrupt handlers are complete */
- cnt = 0;
- do {
- msleep(10);
- if (!atomic_read(&sp->isr_cnt))
- break;
- cnt++;
- } while(cnt < 5);
}
