mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-17 13:36:16 +02:00
This patch applies to the RDC 32xx ethernet driver (svn r10754, first patch applied) and fixes the following issues:
- re-added the parent parameter to specify a netdevice to steal the MAC address from (optional). - fixed null pointer access in r6040_rx() (lp->dev init. was missing) - fixed "scheduling while atomic" endless loop if tx_timeout() was called (caused by the re-allocs of the buffers) - fixed tx timeouts (tx irq weren't re-enabled on rx irq) It adds some defines and cleans the code a bit (IMHO). Signed-Off by Joerg Albert <jal2@gmx.de> git-svn-id: svn://svn.openwrt.org/openwrt/trunk@11507 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
florian
parent
4c73b6629a
commit
3c86e2801f
@ -128,6 +128,15 @@ MODULE_PARM_DESC(debug, "debug mask (-1 for all)");
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#define MISR 0x3C /* Status register */
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#define MIER 0x40 /* INT enable register */
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#define MSK_INT 0x0000 /* Mask off interrupts */
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#define RX_FINISH 0x0001 /* rx finished irq */
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#define RX_NO_DESC 0x0002 /* rx no descr. avail. irq */
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#define RX_FIFO_FULL 0x0004 /* rx fifo full irq */
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#define RX_EARLY 0x0008 /* rx early irq */
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#define TX_FINISH 0x0010 /* tx finished irq */
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#define TX_EARLY 0x0080 /* tx early irq */
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#define EVENT_OVRFL 0x0100 /* event counter overflow irq */
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#define LINK_CHANGED 0x0200 /* PHY link changed irq */
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#define ME_CISR 0x44 /* Event counter INT status */
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#define ME_CIER 0x48 /* Event counter INT enable */
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#define MR_CNT 0x50 /* Successfully received packet counter */
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@ -164,7 +173,12 @@ MODULE_PARM_DESC(debug, "debug mask (-1 for all)");
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#define MAX_BUF_SIZE 0x600
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#define RX_DESC_SIZE (RX_DCNT * sizeof(struct r6040_descriptor))
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#define TX_DESC_SIZE (TX_DCNT * sizeof(struct r6040_descriptor))
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#define MBCR_DEFAULT 0x012A /* MAC Bus Control Register */
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#define MBCR_DEFAULT 0x012A /* MAC Bus Control Register:
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- wait 1 host clock until SDRAM bus request
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becomes high priority
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- RX FIFO: 32 byte
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- TX FIFO: 64 byte
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- FIFO transfer length: 16 byte */
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#define MCAST_MAX 4 /* Max number multicast addresses to filter */
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/* PHY settings */
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@ -176,10 +190,11 @@ MODULE_AUTHOR("Sten Wang <sten.wang@rdc.com.tw>,"
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("RDC R6040 NAPI PCI FastEthernet driver");
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#define RX_INT 0x0001
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#define TX_INT 0x0010
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#define RX_NO_DESC_INT 0x0002
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#define INT_MASK (RX_INT | TX_INT)
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/*! which rx interrupts do we allow */
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#define RX_INTS (RX_FIFO_FULL|RX_NO_DESC|RX_FINISH)
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/*! which tx interrupts do we allow */
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#define TX_INTS (TX_FINISH)
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#define INT_MASK (RX_INTS | TX_INTS)
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struct r6040_descriptor {
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u16 status, len; /* 0-3 */
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@ -213,12 +228,20 @@ struct r6040_private {
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void __iomem *base;
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};
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struct net_device *parent_dev;
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static char *parent;
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module_param(parent, charp, 0444);
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MODULE_PARM_DESC(parent, "Parent network device name to get the MAC address from");
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static char version[] __devinitdata = KERN_INFO DRV_NAME
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": RDC R6040 NAPI net driver,"
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"version "DRV_VERSION " (" DRV_RELDATE ")\n";
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static int phy_table[] = { PHY1_ADDR, PHY2_ADDR };
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/* forward declarations */
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void r6040_multicast_list(struct net_device *dev);
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/* jal2: comment out to get more symbols for debugging */
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//#define STATIC static
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#define STATIC
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@ -362,7 +385,7 @@ void r6040_init_ring_desc(struct r6040_descriptor *desc_ring,
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desc_ring, desc_dma, size);
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while (size-- > 0) {
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mapping += sizeof(sizeof(*desc));
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mapping += sizeof(*desc);
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desc->ndesc = cpu_to_le32(mapping);
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desc->vndescp = desc + 1;
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desc++;
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@ -376,7 +399,6 @@ void r6040_init_ring_desc(struct r6040_descriptor *desc_ring,
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STATIC void rx_buf_alloc(struct r6040_private *lp, struct net_device *dev)
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{
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struct r6040_descriptor *descptr;
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void __iomem *ioaddr = lp->base;
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dbg(DBG_RX_BUF, "rx_insert %p rx_free_desc x%x dev %p\n",
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lp->rx_insert_ptr, lp->rx_free_desc, dev);
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@ -399,8 +421,6 @@ STATIC void rx_buf_alloc(struct r6040_private *lp, struct net_device *dev)
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descptr, descptr->skb_ptr->data, descptr->buf, lp->rx_free_desc);
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descptr = descptr->vndescp;
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lp->rx_free_desc++;
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/* Trigger RX DMA */
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iowrite16(lp->mcr0 | 0x0002, ioaddr);
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}
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lp->rx_insert_ptr = descptr;
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}
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@ -432,7 +452,6 @@ dump_tx_ring(struct r6040_private *lp)
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void r6040_alloc_txbufs(struct net_device *dev)
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{
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struct r6040_private *lp = netdev_priv(dev);
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void __iomem *ioaddr = lp->base;
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lp->tx_free_desc = TX_DCNT;
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@ -444,8 +463,6 @@ void r6040_alloc_txbufs(struct net_device *dev)
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dump_tx_ring(lp);
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}
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#endif
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iowrite16(lp->tx_ring_dma, ioaddr + MTD_SA0);
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iowrite16(lp->tx_ring_dma >> 16, ioaddr + MTD_SA1);
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}
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#if (DEBUG & DBG_RX_RING_DUMP)
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@ -475,7 +492,6 @@ dump_rx_ring(struct r6040_private *lp)
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void r6040_alloc_rxbufs(struct net_device *dev)
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{
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struct r6040_private *lp = netdev_priv(dev);
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void __iomem *ioaddr = lp->base;
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lp->rx_free_desc = 0;
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@ -489,9 +505,61 @@ void r6040_alloc_rxbufs(struct net_device *dev)
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dump_rx_ring(lp);
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}
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#endif
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}
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/*! reset MAC and set all registers */
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void r6040_init_mac_regs(struct r6040_private *lp)
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{
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void __iomem *ioaddr = lp->base;
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int limit;
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char obuf[3*ETH_ALEN] __attribute__ ((unused));
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/* Mask Off Interrupt */
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iowrite16(MSK_INT, ioaddr + MIER);
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/* reset MAC */
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iowrite16(MAC_RST, ioaddr + MCR1);
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udelay(100);
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limit=2048;
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while ((ioread16(ioaddr + MCR1) & MAC_RST) && limit-- > 0);
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/* Reset internal state machine */
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iowrite16(2, ioaddr + MAC_SM);
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iowrite16(0, ioaddr + MAC_SM);
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udelay(5000);
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/* Restore MAC Addresses */
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r6040_multicast_list(lp->dev);
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/* TODO: restore multcast and hash table */
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/* MAC Bus Control Register */
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iowrite16(MBCR_DEFAULT, ioaddr + MBCR);
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/* Buffer Size Register */
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iowrite16(MAX_BUF_SIZE, ioaddr + MR_BSR);
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/* write tx ring start address */
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iowrite16(lp->tx_ring_dma, ioaddr + MTD_SA0);
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iowrite16(lp->tx_ring_dma >> 16, ioaddr + MTD_SA1);
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/* write rx ring start address */
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iowrite16(lp->rx_ring_dma, ioaddr + MRD_SA0);
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iowrite16(lp->rx_ring_dma >> 16, ioaddr + MRD_SA1);
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/* set interrupt waiting time and packet numbers */
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iowrite16(0x0F06, ioaddr + MT_ICR);
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iowrite16(0x0F06, ioaddr + MR_ICR);
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/* enable interrupts */
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iowrite16(INT_MASK, ioaddr + MIER);
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/* enable tx and rx */
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iowrite16(lp->mcr0 | 0x0002, ioaddr);
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/* let TX poll the descriptors - we may got called by r6040_tx_timeout which has left
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some unsent tx buffers */
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iowrite16(0x01, ioaddr + MTPR);
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}
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void r6040_tx_timeout(struct net_device *dev)
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@ -499,27 +567,18 @@ void r6040_tx_timeout(struct net_device *dev)
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struct r6040_private *priv = netdev_priv(dev);
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void __iomem *ioaddr = priv->base;
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printk(KERN_WARNING "%s: transmit timed out, status %4.4x, PHY status "
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"%4.4x\n",
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/* we read MISR, which clears on read (i.e. we may loose an RX interupt,
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but this is an error anyhow ... */
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printk(KERN_WARNING "%s: transmit timed out, int enable %4.4x "
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"status %4.4x, PHY status %4.4x\n",
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dev->name, ioread16(ioaddr + MIER),
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ioread16(ioaddr + MISR),
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mdio_read(dev, priv->mii_if.phy_id, MII_BMSR));
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disable_irq(dev->irq);
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napi_disable(&priv->napi);
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spin_lock(&priv->lock);
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/* Clear all descriptors */
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r6040_free_txbufs(dev);
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r6040_free_rxbufs(dev);
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r6040_alloc_txbufs(dev);
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r6040_alloc_rxbufs(dev);
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/* Reset MAC */
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iowrite16(MAC_RST, ioaddr + MCR1);
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spin_unlock(&priv->lock);
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enable_irq(dev->irq);
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dev->stats.tx_errors++;
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netif_wake_queue(dev);
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/* Reset MAC and re-init all registers */
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r6040_init_mac_regs(priv);
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}
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struct net_device_stats *r6040_get_stats(struct net_device *dev)
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@ -543,28 +602,18 @@ void r6040_down(struct net_device *dev)
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void __iomem *ioaddr = lp->base;
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struct pci_dev *pdev = lp->pdev;
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int limit = 2048;
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u16 *adrp;
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u16 cmd;
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dbg(DBG_EXIT, "ENTER\n");
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/* Stop MAC */
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iowrite16(MSK_INT, ioaddr + MIER); /* Mask Off Interrupt */
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iowrite16(MAC_RST, ioaddr + MCR1); /* Reset RDC MAC */
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while (limit--) {
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cmd = ioread16(ioaddr + MCR1);
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if (cmd & 0x1)
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break;
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}
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udelay(100);
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while ((ioread16(ioaddr+MCR1) & 1) && limit-- > 0);
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if (limit <= 0)
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err("timeout while waiting for reset\n");
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err("timeout while waiting for reset done.\n");
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/* Restore MAC Address to MIDx */
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adrp = (u16 *) dev->dev_addr;
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iowrite16(adrp[0], ioaddr + MID_0L);
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iowrite16(adrp[1], ioaddr + MID_0M);
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iowrite16(adrp[2], ioaddr + MID_0H);
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free_irq(dev->irq, dev);
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/* Free RX buffer */
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@ -670,8 +719,6 @@ int r6040_rx(struct net_device *dev, int limit)
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struct r6040_descriptor *descptr = priv->rx_remove_ptr;
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struct sk_buff *skb_ptr;
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/* Disable RX interrupt */
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iowrite16(ioread16(ioaddr + MIER) & (~RX_INT), ioaddr + MIER);
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descptr = priv->rx_remove_ptr;
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/* Check for errors */
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@ -803,7 +850,7 @@ int r6040_poll(struct napi_struct *napi, int budget)
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if (work_done < budget) {
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netif_rx_complete(dev, napi);
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/* Enable RX interrupt */
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iowrite16(ioread16(ioaddr + MIER) | RX_INT, ioaddr + MIER);
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iowrite16(ioread16(ioaddr + MIER) | RX_INTS, ioaddr + MIER);
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}
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return work_done;
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}
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@ -816,8 +863,6 @@ irqreturn_t r6040_interrupt(int irq, void *dev_id)
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void __iomem *ioaddr = lp->base;
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u16 status;
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/* Mask off RDC MAC interrupt */
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iowrite16(MSK_INT, ioaddr + MIER);
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/* Read MISR status and clear */
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status = ioread16(ioaddr + MISR);
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@ -826,10 +871,22 @@ irqreturn_t r6040_interrupt(int irq, void *dev_id)
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if (status == 0x0000 || status == 0xffff)
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return IRQ_NONE;
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/* RX interrupt request */
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if (status & 0x01) {
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/* rx early / rx finish interrupt
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or rx descriptor unavail. */
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if (status & RX_INTS) {
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if (status & RX_NO_DESC) {
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/* rx descriptor unavail. */
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dev->stats.rx_dropped++;
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dev->stats.rx_missed_errors++;
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}
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/* Mask off RX interrupts */
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iowrite16(ioread16(ioaddr + MIER) & ~RX_INTS, ioaddr + MIER);
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netif_rx_schedule(dev, &lp->napi);
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iowrite16(TX_INT, ioaddr + MIER);
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}
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/* rx FIFO full */
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if (status & (1<<2)) {
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dev->stats.rx_fifo_errors++;
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}
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/* TX interrupt request */
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@ -860,8 +917,6 @@ void r6040_up(struct net_device *dev)
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r6040_alloc_txbufs(dev);
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r6040_alloc_rxbufs(dev);
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/* Buffer Size Register */
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iowrite16(MAX_BUF_SIZE, ioaddr + MR_BSR);
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/* Read the PHY ID */
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lp->switch_sig = phy_read(ioaddr, 0, 2);
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@ -878,16 +933,9 @@ void r6040_up(struct net_device *dev)
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else
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lp->phy_mode = (PHY_MODE & 0x0100) ? 0x8000:0x0;
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}
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/* MAC Bus Control Register */
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iowrite16(MBCR_DEFAULT, ioaddr + MBCR);
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/* MAC TX/RX Enable */
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/* configure duplex mode */
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lp->mcr0 |= lp->phy_mode;
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iowrite16(lp->mcr0, ioaddr);
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/* set interrupt waiting time and packet numbers */
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iowrite16(0x0F06, ioaddr + MT_ICR);
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iowrite16(0x0F06, ioaddr + MR_ICR);
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/* improve performance (by RDC guys) */
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phy_write(ioaddr, 30, 17, (phy_read(ioaddr, 30, 17) | 0x4000));
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@ -895,8 +943,8 @@ void r6040_up(struct net_device *dev)
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phy_write(ioaddr, 0, 19, 0x0000);
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phy_write(ioaddr, 0, 30, 0x01F0);
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/* Interrupt Mask Register */
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iowrite16(INT_MASK, ioaddr + MIER);
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/* Reset MAC and init all registers */
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r6040_init_mac_regs(lp);
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}
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/*
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@ -927,32 +975,6 @@ void r6040_timer(unsigned long data)
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mod_timer(&lp->timer, jiffies + round_jiffies(HZ));
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}
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/* Read/set MAC address routines */
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void r6040_mac_address(struct net_device *dev)
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{
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struct r6040_private *lp = netdev_priv(dev);
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void __iomem *ioaddr = lp->base;
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u16 *adrp;
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/* MAC operation register */
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iowrite16(0x01, ioaddr + MCR1); /* Reset MAC */
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iowrite16(2, ioaddr + MAC_SM); /* Reset internal state machine */
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iowrite16(0, ioaddr + MAC_SM);
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udelay(5000);
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/* Restore MAC Address */
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adrp = (u16 *) dev->dev_addr;
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iowrite16(adrp[0], ioaddr + MID_0L);
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iowrite16(adrp[1], ioaddr + MID_0M);
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iowrite16(adrp[2], ioaddr + MID_0H);
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{
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char obuf[3*ETH_ALEN] __attribute__ ((unused));
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dbg(DBG_MAC_ADDR, "set MAC addr %s\n",
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hex2str(dev->dev_addr, obuf, ETH_ALEN, ':'));
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}
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}
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int r6040_open(struct net_device *dev)
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{
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struct r6040_private *lp = netdev_priv(dev);
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@ -967,9 +989,6 @@ int r6040_open(struct net_device *dev)
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dbg(DBG_OPEN, "got irq %d\n", dev->irq);
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/* Set MAC address */
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r6040_mac_address(dev);
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/* Allocate Descriptor memory */
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lp->rx_ring =
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pci_alloc_consistent(lp->pdev, RX_DESC_SIZE, &lp->rx_ring_dma);
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@ -1058,6 +1077,7 @@ int r6040_start_xmit(struct sk_buff *skb, struct net_device *dev)
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return ret;
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}
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/*! set MAC addresses and promiscous mode */
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void r6040_multicast_list(struct net_device *dev)
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{
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struct r6040_private *lp = netdev_priv(dev);
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@ -1067,6 +1087,7 @@ void r6040_multicast_list(struct net_device *dev)
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unsigned long flags;
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struct dev_mc_list *dmi = dev->mc_list;
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int i;
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char obuf[3*ETH_ALEN] __attribute__ ((unused));
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/* MAC Address */
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adrp = (u16 *)dev->dev_addr;
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@ -1074,6 +1095,9 @@ void r6040_multicast_list(struct net_device *dev)
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iowrite16(adrp[1], ioaddr + MID_0M);
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iowrite16(adrp[2], ioaddr + MID_0H);
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dbg(DBG_MAC_ADDR, "%s: set MAC addr %s\n",
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dev->name, hex2str(dev->dev_addr, obuf, ETH_ALEN, ':'));
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/* Promiscous Mode */
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spin_lock_irqsave(&lp->lock, flags);
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@ -1195,7 +1219,6 @@ int __devinit r6040_init_one(struct pci_dev *pdev,
|
||||
static int card_idx = -1;
|
||||
int bar = 0;
|
||||
long pioaddr;
|
||||
u16 *adrp;
|
||||
|
||||
printk(KERN_INFO "%s\n", version);
|
||||
printk(KERN_INFO DRV_NAME ": debug %x\n", debug);
|
||||
@ -1233,6 +1256,7 @@ int __devinit r6040_init_one(struct pci_dev *pdev,
|
||||
SET_NETDEV_DEV(dev, &pdev->dev);
|
||||
lp = netdev_priv(dev);
|
||||
lp->pdev = pdev;
|
||||
lp->dev = dev;
|
||||
|
||||
if (pci_request_regions(pdev, DRV_NAME)) {
|
||||
printk(KERN_ERR DRV_NAME ": Failed to request PCI regions\n");
|
||||
@ -1254,14 +1278,8 @@ int __devinit r6040_init_one(struct pci_dev *pdev,
|
||||
spin_lock_init(&lp->lock);
|
||||
pci_set_drvdata(pdev, dev);
|
||||
|
||||
/* Set MAC address */
|
||||
card_idx++;
|
||||
|
||||
adrp = (u16 *)dev->dev_addr;
|
||||
adrp[0] = ioread16(ioaddr + MID_0L);
|
||||
adrp[1] = ioread16(ioaddr + MID_0M);
|
||||
adrp[2] = ioread16(ioaddr + MID_0H);
|
||||
|
||||
/* Link new device into r6040_root_dev */
|
||||
lp->pdev = pdev;
|
||||
|
||||
@ -1282,12 +1300,20 @@ int __devinit r6040_init_one(struct pci_dev *pdev,
|
||||
dev->watchdog_timeo = TX_TIMEOUT;
|
||||
|
||||
{
|
||||
/* jal2: added for debugging only: set fixed mac address.
|
||||
Otherwise we need to call "ifconfig ethX hw ether XX:XX:..."
|
||||
before we can invoke "ifconfig ethX up" */
|
||||
/* TODO: fix the setting of the MAC address.
|
||||
Right now you must either specify a netdevice with "parent=", whose
|
||||
address is copied or the (default) address of the Sitecom WL-153
|
||||
bootloader is used */
|
||||
static const u8 dflt_addr[ETH_ALEN] = {0,0x50,0xfc,2,3,4};
|
||||
if (parent_dev) {
|
||||
memcpy(dev->dev_addr, parent_dev->dev_addr, ETH_ALEN);
|
||||
} else {
|
||||
printk(KERN_WARNING "%s: no parent - using default mac address\n",
|
||||
dev->name);
|
||||
memcpy(dev->dev_addr, dflt_addr, ETH_ALEN);
|
||||
}
|
||||
dev->dev_addr[ETH_ALEN-1] += card_idx; /* + 0 or 1 */
|
||||
}
|
||||
|
||||
#ifdef CONFIG_NET_POLL_CONTROLLER
|
||||
dev->poll_controller = r6040_poll_controller;
|
||||
@ -1348,6 +1374,9 @@ static struct pci_driver r6040_driver = {
|
||||
|
||||
static int __init r6040_init(void)
|
||||
{
|
||||
if (parent)
|
||||
parent_dev = dev_get_by_name(&init_net, parent);
|
||||
|
||||
return pci_register_driver(&r6040_driver);
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user