diff -ur linux.old/drivers/net/via-rhine.c linux.dev/drivers/net/via-rhine.c
---- linux.old/drivers/net/via-rhine.c 2006-12-07 05:53:39.000000000 +0100
-+++ linux.dev/drivers/net/via-rhine.c 2006-12-07 07:06:52.000000000 +0100
-@@ -131,6 +131,10 @@
- - Fix Tx engine race for good
- - Craig Brind: Zero padded aligned buffers for short packets.
+--- linux.old/drivers/net/via-rhine.c 2006-11-29 22:57:37.000000000 +0100
++++ linux.dev/drivers/net/via-rhine.c 2006-12-14 03:39:01.000000000 +0100
+@@ -33,6 +33,7 @@
+ #define DRV_VERSION "1.4.2"
+ #define DRV_RELDATE "Sept-11-2006"
-+ OpenWrt Version (Felix Fietkau <nbd@openwrt.org>)
-+ - Performance improvements
-+ - NAPI polling
-+
- */
++#define PKT_ALIGN 1
- #define DRV_NAME "via-rhine"
-@@ -142,7 +146,6 @@
+ /* A few user-configurable values.
These may be modified when a driver module is loaded. */
-
+@@ -40,9 +41,11 @@
static int debug = 1; /* 1 normal messages, 0 quiet .. 7 verbose. */
--static int max_interrupt_work = 20;
+ static int max_interrupt_work = 20;
++#ifndef PKT_ALIGN
/* Set the copy breakpoint for the copy-only-tiny-frames scheme.
Setting to > 1518 effectively disables this feature. */
-@@ -165,9 +168,9 @@
- Making the Tx ring too large decreases the effectiveness of channel
- bonding and packet priority.
- There are no ill effects from too-large receive rings. */
--#define TX_RING_SIZE 16
--#define TX_QUEUE_LEN 10 /* Limit ring entries actually used. */
--#define RX_RING_SIZE 16
-+#define TX_RING_SIZE 64
-+#define TX_QUEUE_LEN 60 /* Limit ring entries actually used. */
-+#define RX_RING_SIZE 64
-
+ static int rx_copybreak;
++#endif
- /* Operational parameters that usually are not changed. */
-@@ -201,6 +204,7 @@
+ /* Work-around for broken BIOSes: they are unable to get the chip back out of
+ power state D3 so PXE booting fails. bootparam(7): via-rhine.avoid_D3=1 */
+@@ -105,6 +108,7 @@
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/uaccess.h>
/* These identify the driver base version and may not be removed. */
static char version[] __devinitdata =
-@@ -217,10 +221,8 @@
- MODULE_DESCRIPTION("VIA Rhine PCI Fast Ethernet driver");
- MODULE_LICENSE("GPL");
+@@ -123,12 +127,14 @@
--module_param(max_interrupt_work, int, 0);
+ module_param(max_interrupt_work, int, 0);
module_param(debug, int, 0);
- module_param(rx_copybreak, int, 0);
--MODULE_PARM_DESC(max_interrupt_work, "VIA Rhine maximum events handled per interrupt");
+-module_param(rx_copybreak, int, 0);
+ module_param(avoid_D3, bool, 0);
+ MODULE_PARM_DESC(max_interrupt_work, "VIA Rhine maximum events handled per interrupt");
MODULE_PARM_DESC(debug, "VIA Rhine debug level (0-7)");
- MODULE_PARM_DESC(rx_copybreak, "VIA Rhine copy breakpoint for copy-only-tiny-frames");
-
-@@ -461,6 +463,8 @@
- struct tx_desc *tx_ring;
- dma_addr_t rx_ring_dma;
- dma_addr_t tx_ring_dma;
-+ u32 istat;
-+ u32 imask;
-
- /* The addresses of receive-in-place skbuffs. */
- struct sk_buff *rx_skbuff[RX_RING_SIZE];
-@@ -500,9 +504,10 @@
- static void rhine_tx_timeout(struct net_device *dev);
- static int rhine_start_tx(struct sk_buff *skb, struct net_device *dev);
- static irqreturn_t rhine_interrupt(int irq, void *dev_instance, struct pt_regs *regs);
--static void rhine_tx(struct net_device *dev);
--static void rhine_rx(struct net_device *dev);
--static void rhine_error(struct net_device *dev, int intr_status);
-+static int rhine_poll(struct net_device *dev, int *budget);
-+static int rhine_tx(struct net_device *dev);
-+static int rhine_rx(struct net_device *dev, int max_work);
-+static void rhine_error(struct net_device *dev);
- static void rhine_set_rx_mode(struct net_device *dev);
- static struct net_device_stats *rhine_get_stats(struct net_device *dev);
- static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
-@@ -597,6 +602,7 @@
- struct rhine_private *rp = netdev_priv(dev);
- void __iomem *ioaddr = rp->base;
-
-+ pci_enable_device(rp->pdev);
- iowrite8(Cmd1Reset, ioaddr + ChipCmd1);
- IOSYNC;
-
-@@ -618,6 +624,28 @@
- "failed" : "succeeded");
- }
-
-+static inline void rhine_intr_enable(struct net_device *dev)
-+{
-+ struct rhine_private *rp = netdev_priv(dev);
-+ void __iomem *ioaddr = rp->base;
-+
-+ iowrite16(rp->imask = (IntrRxDone | IntrRxErr | IntrRxEmpty| IntrRxOverflow |
-+ IntrRxDropped | IntrRxNoBuf | IntrTxAborted |
-+ IntrTxDone | IntrTxError | IntrTxUnderrun |
-+ IntrPCIErr | IntrStatsMax | IntrLinkChange),
-+ ioaddr + IntrEnable);
-+}
-+
-+static inline void rhine_intr_disable(struct net_device *dev)
-+{
-+ struct rhine_private *rp = netdev_priv(dev);
-+ void __iomem *ioaddr = rp->base;
-+
-+ iowrite16(rp->imask = (IntrRxOverflow | IntrRxNoBuf | IntrTxAborted |
-+ IntrTxError | IntrTxUnderrun | IntrPCIErr | IntrStatsMax | IntrLinkChange),
-+ ioaddr + IntrEnable);
-+}
-+
- #ifdef USE_MMIO
- static void enable_mmio(long pioaddr, u32 quirks)
- {
-@@ -660,14 +688,26 @@
+-MODULE_PARM_DESC(rx_copybreak, "VIA Rhine copy breakpoint for copy-only-tiny-frames");
+ MODULE_PARM_DESC(avoid_D3, "Avoid power state D3 (work-around for broken BIOSes)");
++#ifndef PKT_ALIGN
++module_param(rx_copybreak, int, 0);
++MODULE_PARM_DESC(rx_copybreak, "VIA Rhine copy breakpoint for copy-only-tiny-frames");
++#endif
- }
-
--#ifdef CONFIG_NET_POLL_CONTROLLER
--static void rhine_poll(struct net_device *dev)
-+static int rhine_poll(struct net_device *dev, int *budget)
- {
-- disable_irq(dev->irq);
-- rhine_interrupt(dev->irq, (void *)dev, NULL);
-- enable_irq(dev->irq);
-+ unsigned int work_done, work_to_do = min(*budget, dev->quota);
-+ struct rhine_private *rp = netdev_priv(dev);
-+
-+ work_done = rhine_rx(dev, (*budget < dev->quota ? *budget : dev->quota));
-+
-+ if (rp->istat & (IntrTxErrSummary | IntrTxDone))
-+ rhine_tx(dev);
-+
-+ *budget -= work_done;
-+ dev->quota -= work_done;
-+
-+ if (work_done < work_to_do) {
-+ netif_rx_complete(dev);
-+ rhine_intr_enable(dev);
-+ }
-+
-+ return (work_done >= work_to_do);
- }
--#endif
-
- static void rhine_hw_init(struct net_device *dev, long pioaddr)
- {
-@@ -846,11 +886,10 @@
- dev->ethtool_ops = &netdev_ethtool_ops;
- dev->tx_timeout = rhine_tx_timeout;
- dev->watchdog_timeo = TX_TIMEOUT;
--#ifdef CONFIG_NET_POLL_CONTROLLER
-- dev->poll_controller = rhine_poll;
--#endif
-- if (rp->quirks & rqRhineI)
-- dev->features |= NETIF_F_SG|NETIF_F_HW_CSUM;
-+ dev->poll = rhine_poll;
-+ dev->weight = 64;
-+
-+ dev->features |= NETIF_F_SG | NETIF_F_HW_CSUM;
-
- /* dev->name not defined before register_netdev()! */
- rc = register_netdev(dev);
-@@ -894,6 +933,10 @@
- }
- }
- rp->mii_if.phy_id = phy_id;
-+
-+ // shut down until somebody really needs it
-+ iowrite8(0x80, ioaddr + 0xa1);
-+ pci_set_power_state(rp->pdev, 3);
-
- return 0;
-
-@@ -985,7 +1028,7 @@
+ /*
+ Theory of Operation
+@@ -923,7 +929,7 @@
/* Fill in the Rx buffers. Handle allocation failure gracefully. */
for (i = 0; i < RX_RING_SIZE; i++) {
rp->rx_skbuff[i] = skb;
if (skb == NULL)
break;
-@@ -1120,11 +1163,7 @@
- rhine_set_rx_mode(dev);
-
- /* Enable interrupts by setting the interrupt mask. */
-- iowrite16(IntrRxDone | IntrRxErr | IntrRxEmpty| IntrRxOverflow |
-- IntrRxDropped | IntrRxNoBuf | IntrTxAborted |
-- IntrTxDone | IntrTxError | IntrTxUnderrun |
-- IntrPCIErr | IntrStatsMax | IntrLinkChange,
-- ioaddr + IntrEnable);
-+ rhine_intr_enable(dev);
-
- iowrite16(CmdStart | CmdTxOn | CmdRxOn | (Cmd1NoTxPoll << 8),
- ioaddr + ChipCmd);
-@@ -1235,6 +1274,7 @@
- mdio_read(dev, rp->mii_if.phy_id, MII_BMSR));
-
- netif_start_queue(dev);
-+ netif_poll_enable(dev);
-
- return 0;
- }
-@@ -1263,8 +1303,8 @@
- /* Reinitialize the hardware. */
- rhine_chip_reset(dev);
- init_registers(dev);
--
- spin_unlock(&rp->lock);
-+
- enable_irq(rp->pdev->irq);
-
- dev->trans_start = jiffies;
-@@ -1358,77 +1398,66 @@
- struct net_device *dev = dev_instance;
- struct rhine_private *rp = netdev_priv(dev);
- void __iomem *ioaddr = rp->base;
-- u32 intr_status;
-- int boguscnt = max_interrupt_work;
- int handled = 0;
-
-- while ((intr_status = get_intr_status(dev))) {
-+ if ((rp->istat = (get_intr_status(dev) & rp->imask))) {
- handled = 1;
-
- /* Acknowledge all of the current interrupt sources ASAP. */
-- if (intr_status & IntrTxDescRace)
-+ if (rp->istat & IntrTxDescRace)
- iowrite8(0x08, ioaddr + IntrStatus2);
-- iowrite16(intr_status & 0xffff, ioaddr + IntrStatus);
-+ iowrite16(rp->istat & 0xffff, ioaddr + IntrStatus);
- IOSYNC;
-
-- if (debug > 4)
-- printk(KERN_DEBUG "%s: Interrupt, status %8.8x.\n",
-- dev->name, intr_status);
-+ if (likely(rp->istat & ((IntrRxDone | IntrRxErr | IntrRxDropped |
-+ IntrRxWakeUp | IntrRxEmpty | IntrRxNoBuf |
-+ IntrTxErrSummary | IntrTxDone)))) {
-+
-+ rhine_intr_disable(dev);
-
-- if (intr_status & (IntrRxDone | IntrRxErr | IntrRxDropped |
-- IntrRxWakeUp | IntrRxEmpty | IntrRxNoBuf))
-- rhine_rx(dev);
--
-- if (intr_status & (IntrTxErrSummary | IntrTxDone)) {
-- if (intr_status & IntrTxErrSummary) {
-- /* Avoid scavenging before Tx engine turned off */
-- RHINE_WAIT_FOR(!(ioread8(ioaddr+ChipCmd) & CmdTxOn));
-- if (debug > 2 &&
-- ioread8(ioaddr+ChipCmd) & CmdTxOn)
-- printk(KERN_WARNING "%s: "
-- "rhine_interrupt() Tx engine"
-- "still on.\n", dev->name);
-- }
-- rhine_tx(dev);
-+ if (likely(netif_rx_schedule_prep(dev)))
-+ __netif_rx_schedule(dev);
- }
-
- /* Abnormal error summary/uncommon events handlers. */
-- if (intr_status & (IntrPCIErr | IntrLinkChange |
-+ if (unlikely(rp->istat & (IntrPCIErr | IntrLinkChange |
- IntrStatsMax | IntrTxError | IntrTxAborted |
-- IntrTxUnderrun | IntrTxDescRace))
-- rhine_error(dev, intr_status);
--
-- if (--boguscnt < 0) {
-- printk(KERN_WARNING "%s: Too much work at interrupt, "
-- "status=%#8.8x.\n",
-- dev->name, intr_status);
-- break;
-- }
-+ IntrTxUnderrun | IntrTxDescRace)))
-+ rhine_error(dev);
- }
-
-- if (debug > 3)
-- printk(KERN_DEBUG "%s: exiting interrupt, status=%8.8x.\n",
-- dev->name, ioread16(ioaddr + IntrStatus));
- return IRQ_RETVAL(handled);
- }
-
- /* This routine is logically part of the interrupt handler, but isolated
- for clarity. */
--static void rhine_tx(struct net_device *dev)
-+static int rhine_tx(struct net_device *dev)
- {
- struct rhine_private *rp = netdev_priv(dev);
- int txstatus = 0, entry = rp->dirty_tx % TX_RING_SIZE;
-+ void __iomem *ioaddr = rp->base;
-+ int done = 0;
-+
-+ /* Avoid scavenging before Tx engine turned off */
-+ RHINE_WAIT_FOR(!(ioread8(ioaddr+ChipCmd) & CmdTxOn));
-+ if (debug > 2 &&
-+ ioread8(ioaddr+ChipCmd) & CmdTxOn)
-+ printk(KERN_WARNING "%s: "
-+ "rhine_interrupt() Tx engine"
-+ "still on.\n", dev->name);
-
-- spin_lock(&rp->lock);
-
- /* find and cleanup dirty tx descriptors */
- while (rp->dirty_tx != rp->cur_tx) {
-+ spin_lock(&rp->lock);
- txstatus = le32_to_cpu(rp->tx_ring[entry].tx_status);
- if (debug > 6)
- printk(KERN_DEBUG "Tx scavenge %d status %8.8x.\n",
- entry, txstatus);
-- if (txstatus & DescOwn)
-+ if (txstatus & DescOwn) {
-+ spin_unlock(&rp->lock);
- break;
-+ }
- if (txstatus & 0x8000) {
- if (debug > 1)
- printk(KERN_DEBUG "%s: Transmit error, "
-@@ -1443,6 +1472,7 @@
- (txstatus & 0x0800) || (txstatus & 0x1000)) {
- rp->stats.tx_fifo_errors++;
- rp->tx_ring[entry].tx_status = cpu_to_le32(DescOwn);
-+ spin_unlock(&rp->lock);
- break; /* Keep the skb - we try again */
- }
- /* Transmitter restarted in 'abnormal' handler. */
-@@ -1457,6 +1487,7 @@
- txstatus & 0xF);
- rp->stats.tx_bytes += rp->tx_skbuff[entry]->len;
- rp->stats.tx_packets++;
-+ done++;
- }
- /* Free the original skb. */
- if (rp->tx_skbuff_dma[entry]) {
-@@ -1465,23 +1496,25 @@
- rp->tx_skbuff[entry]->len,
- PCI_DMA_TODEVICE);
- }
-- dev_kfree_skb_irq(rp->tx_skbuff[entry]);
-+ dev_kfree_skb_any(rp->tx_skbuff[entry]);
- rp->tx_skbuff[entry] = NULL;
- entry = (++rp->dirty_tx) % TX_RING_SIZE;
-+ spin_unlock(&rp->lock);
- }
-+
- if ((rp->cur_tx - rp->dirty_tx) < TX_QUEUE_LEN - 4)
- netif_wake_queue(dev);
-
-- spin_unlock(&rp->lock);
-+ return done;
- }
-
- /* This routine is logically part of the interrupt handler, but isolated
- for clarity and better register allocation. */
--static void rhine_rx(struct net_device *dev)
-+static int rhine_rx(struct net_device *dev, int max_work)
- {
- struct rhine_private *rp = netdev_priv(dev);
- int entry = rp->cur_rx % RX_RING_SIZE;
-- int boguscnt = rp->dirty_rx + RX_RING_SIZE - rp->cur_rx;
-+ int done = 0;
-
- if (debug > 4) {
- printk(KERN_DEBUG "%s: rhine_rx(), entry %d status %8.8x.\n",
-@@ -1498,7 +1531,7 @@
- if (debug > 4)
- printk(KERN_DEBUG "rhine_rx() status is %8.8x.\n",
- desc_status);
-- if (--boguscnt < 0)
-+ if (--max_work < 0)
- break;
- if ((desc_status & (RxWholePkt | RxErr)) != RxWholePkt) {
- if ((desc_status & RxWholePkt) != RxWholePkt) {
-@@ -1523,9 +1556,7 @@
- if (desc_status & 0x0004) rp->stats.rx_frame_errors++;
- if (desc_status & 0x0002) {
- /* this can also be updated outside the interrupt handler */
-- spin_lock(&rp->lock);
- rp->stats.rx_crc_errors++;
-- spin_unlock(&rp->lock);
- }
- }
- } else {
-@@ -1553,6 +1584,7 @@
+@@ -1481,6 +1487,9 @@
+ /* Length should omit the CRC */
+ int pkt_len = data_size - 4;
+
++#ifdef PKT_ALIGN
++ int i;
++#else
+ /* Check if the packet is long enough to accept without
+ copying to a minimally-sized skbuff. */
+ if (pkt_len < rx_copybreak &&
+@@ -1500,7 +1509,9 @@
+ rp->rx_skbuff_dma[entry],
rp->rx_buf_sz,
PCI_DMA_FROMDEVICE);
- } else {
-+ int i;
+- } else {
++ } else
++#endif
++ {
skb = rp->rx_skbuff[entry];
if (skb == NULL) {
printk(KERN_ERR "%s: Inconsistent Rx "
-@@ -1561,6 +1593,14 @@
- break;
- }
- rp->rx_skbuff[entry] = NULL;
-+
-+ /* align the data to the ip header - should be faster than using rx_copybreak */
+@@ -1514,6 +1525,14 @@
+ rp->rx_skbuff_dma[entry],
+ rp->rx_buf_sz,
+ PCI_DMA_FROMDEVICE);
++#ifdef PKT_ALIGN
++ /* align the data to the ip header - should be faster than copying the entire packet */
+ for (i = pkt_len - (pkt_len % 4); i >= 0; i -= 4) {
+ put_unaligned(*((u32 *) (skb->data + i)), (u32 *) (skb->data + i + 2));
+ }
+ skb->data += 2;
+ skb->tail += 2;
-+
- skb_put(skb, pkt_len);
- pci_unmap_single(rp->pdev,
- rp->rx_skbuff_dma[entry],
-@@ -1568,10 +1608,11 @@
- PCI_DMA_FROMDEVICE);
++#endif
}
skb->protocol = eth_type_trans(skb, dev);
-- netif_rx(skb);
-+ netif_receive_skb(skb);
- dev->last_rx = jiffies;
- rp->stats.rx_bytes += pkt_len;
- rp->stats.rx_packets++;
-+ done++;
- }
- entry = (++rp->cur_rx) % RX_RING_SIZE;
- rp->rx_head_desc = &rp->rx_ring[entry];
-@@ -1582,7 +1623,7 @@
- struct sk_buff *skb;
- entry = rp->dirty_rx % RX_RING_SIZE;
- if (rp->rx_skbuff[entry] == NULL) {
-- skb = dev_alloc_skb(rp->rx_buf_sz);
-+ skb = dev_alloc_skb(rp->rx_buf_sz + 4);
- rp->rx_skbuff[entry] = skb;
- if (skb == NULL)
- break; /* Better luck next round. */
-@@ -1595,6 +1636,8 @@
- }
- rp->rx_ring[entry].rx_status = cpu_to_le32(DescOwn);
- }
-+
-+ return done;
- }
-
- /*
-@@ -1644,11 +1687,11 @@
-
- }
-
--static void rhine_error(struct net_device *dev, int intr_status)
-+static void rhine_error(struct net_device *dev)
- {
- struct rhine_private *rp = netdev_priv(dev);
- void __iomem *ioaddr = rp->base;
--
-+ u32 intr_status = rp->istat;
- spin_lock(&rp->lock);
-
- if (intr_status & IntrLinkChange)
-@@ -1895,6 +1938,7 @@
-
- /* Disable interrupts by clearing the interrupt mask. */
- iowrite16(0x0000, ioaddr + IntrEnable);
-+ rp->imask = 0;
-
- /* Stop the chip's Tx and Rx processes. */
- iowrite16(CmdStop, ioaddr + ChipCmd);
-@@ -1906,6 +1950,9 @@
- free_tbufs(dev);
- free_ring(dev);
-
-+ writeb(0x80, ioaddr + 0xa1);
-+ pci_set_power_state(rp->pdev, 3);
-+
- return 0;
- }
-
-@@ -1935,6 +1982,7 @@
- return; /* Nothing to do for non-WOL adapters */
-
- rhine_power_init(dev);
-+ netif_poll_disable(dev);
-
- /* Make sure we use pattern 0, 1 and not 4, 5 */
- if (rp->quirks & rq6patterns)
-Only in linux.dev/drivers/net: .via-rhine.c.swp
+ #ifdef CONFIG_VIA_RHINE_NAPI
projects / openwrt.git / blobdiff