patch-2.3.48 linux/drivers/net/irda/nsc-ircc.c

• Lines: 106
• Date: Tue Feb 22 22:28:59 2000
• Orig file: v2.3.47/linux/drivers/net/irda/nsc-ircc.c
• Orig date: Sat Feb 12 11:22:10 2000

diff -u --recursive --new-file v2.3.47/linux/drivers/net/irda/nsc-ircc.c linux/drivers/net/irda/nsc-ircc.c
@@ -6,7 +6,7 @@
  * Status:        Stable.
  * Author:        Dag Brattli <dagb@cs.uit.no>
  * Created at:    Sat Nov  7 21:43:15 1998
- * Modified at:   Fri Jan 28 12:10:10 2000
+ * Modified at:   Fri Feb 18 01:48:51 2000
  * Modified by:   Dag Brattli <dagb@cs.uit.no>
  * 
  *     Copyright (c) 1998-2000 Dag Brattli <dagb@cs.uit.no>
@@ -42,6 +42,7 @@
  ********************************************************************/
 
 #include <linux/module.h>
+
 #include <linux/kernel.h>
 #include <linux/types.h>
 #include <linux/skbuff.h>
@@ -1431,8 +1432,10 @@
 		/* We must empty the status FIFO no matter what */
 		len = inb(iobase+RFLFL) | ((inb(iobase+RFLFH) & 0x1f) << 8);
 
-		if (st_fifo->tail >= MAX_RX_WINDOW)
+		if (st_fifo->tail >= MAX_RX_WINDOW) {
+			IRDA_DEBUG(0, __FUNCTION__ "(), window is full!\n");
 			continue;
+		}
 			
 		st_fifo->entries[st_fifo->tail].status = status;
 		st_fifo->entries[st_fifo->tail].len = len;
@@ -1492,7 +1495,18 @@
 					st_fifo->pending_bytes += len;
 					st_fifo->entries[st_fifo->head].status = status;
 					st_fifo->entries[st_fifo->head].len = len;
-				
+					/*  
+					 * DMA not finished yet, so try again 
+					 * later, set timer value, resolution 
+					 * 125 us 
+					 */
+					switch_bank(iobase, BANK4);
+					outb(0x02, iobase+TMRL); /* x 125 us */
+					outb(0x00, iobase+TMRH);
+
+					/* Start timer */
+					outb(IRCR1_TMR_EN, iobase+IRCR1);
+
 					/* Restore bank register */
 					outb(bank, iobase+BSR);
 					
@@ -1597,7 +1611,7 @@
 		else { 
 
 			self->stats.tx_packets++;
-			netif_wakeup_queue(self->netdev);
+			netif_wake_queue(self->netdev);
 			self->ier = IER_TXEMP_IE;
 		}
 			
@@ -1648,21 +1662,12 @@
 	
 	/* Status FIFO event*/
 	if (eir & EIR_SFIF_EV) {
+		/* Check if DMA has finished */
 		if (nsc_ircc_dma_receive_complete(self, iobase)) {
 			/* Wait for next status FIFO interrupt */
 			self->ier = IER_SFIF_IE;
 		} else {
-			/* 
-			 * DMA not finished yet, so try again later, set 
-			 * timer value, resolution 125 us 
-			 */
-			switch_bank(iobase, BANK4);
-			outb(0x02, iobase+TMRL); /* 2 * 125 us */
-			outb(0x00, iobase+TMRH);
-
-			/* Start timer */
-			outb(IRCR1_TMR_EN, iobase+IRCR1);
-			self->ier = IER_TMR_IE | IER_SFIF_IE;
+			self->ier = IER_SFIF_IE | IER_TMR_IE;
 		}
 	} else if (eir & EIR_TMR_EV) { /* Timer finished */
 		/* Disable timer */
@@ -1677,15 +1682,17 @@
 		if (self->io.direction == IO_XMIT) {
 			nsc_ircc_dma_xmit(self, iobase);
 
-			/*  Interrupt on DMA */
+			/* Interrupt on DMA */
 			self->ier = IER_DMA_IE;
 		} else {
-			/* Check if DMA has now finished */
-			nsc_ircc_dma_receive_complete(self, iobase);
-
-			self->ier = IER_SFIF_IE;
+			/* Check (again) if DMA has finished */
+			if (nsc_ircc_dma_receive_complete(self, iobase)) {
+				self->ier = IER_SFIF_IE;
+			} else {
+				self->ier = IER_SFIF_IE | IER_TMR_IE;
+			}
 		}
-	} else if (eir & EIR_DMA_EV) { 
+	} else if (eir & EIR_DMA_EV) {
 		/* Finished with all transmissions? */
 		if (nsc_ircc_dma_xmit_complete(self)) {		
 			/* Check if there are more frames to be transmitted */