X-Git-Url: https://git.rohieb.name/openwrt.git/blobdiff_plain/4c73b6629a09945637f20e93f073b4efbb35def4..31800c29b03fe4268985b9761b4ccdabfad7a041:/target/linux/rdc/files/drivers/net/r6040.c diff --git a/target/linux/rdc/files/drivers/net/r6040.c b/target/linux/rdc/files/drivers/net/r6040.c index 032884e34..237b7fa09 100644 --- a/target/linux/rdc/files/drivers/net/r6040.c +++ b/target/linux/rdc/files/drivers/net/r6040.c @@ -50,35 +50,34 @@ #include #define DRV_NAME "r6040" -#define DRV_VERSION "0.18" -#define DRV_RELDATE "13Jun2008" +#define DRV_VERSION "0.19" +#define DRV_RELDATE "16Jun2008" /* define bits of a debug mask */ -#define DBG_PHY (1<< 0) /*!< show PHY read/write */ -#define DBG_FREE_BUFS (1<< 1) /*!< show calls to r6040_free_*bufs */ -#define DBG_RING (1<< 2) /*!< debug init./freeing of descr rings */ -#define DBG_RX_BUF (1<< 3) /*!< show alloc. of new rx buf (in IRQ context !) */ -#define DBG_TX_BUF (1<< 4) /*!< show arrival of new tx buf */ -#define DBG_RX_IRQ (1<< 5) /*!< show RX IRQ handling */ -#define DBG_TX_IRQ (1<< 6) /*!< debug TX done IRQ */ -#define DBG_RX_DESCR (1<< 7) /*!< debug rx descr to be processed */ -#define DBG_RX_DATA (1<< 8) /*!< show some user data of incoming packet */ -#define DBG_EXIT (1<< 9) /*!< show exit code calls */ -#define DBG_INIT (1<<10) /*!< show init. code calls */ -#define DBG_TX_RING_DUMP (1<<11) /*!< dump the tx ring after creation */ -#define DBG_RX_RING_DUMP (1<<12) /*!< dump the rx ring after creation */ -#define DBG_TX_DESCR (1<<13) /*!< dump the setting of a descr for tx */ -#define DBG_TX_DATA (1<<14) /*!< dump some tx data */ -#define DBG_IRQ (1<<15) /*!< print inside the irq handler */ -#define DBG_POLL (1<<16) /*!< dump info on poll procedure */ -#define DBG_MAC_ADDR (1<<17) /*!< debug mac address setting */ -#define DBG_OPEN (1<<18) /*!< debug open proc. */ +#define DBG_PHY 0x00000001 /*!< show PHY read/write */ +#define DBG_FREE_BUFS 0x00000002 /*!< show calls to r6040_free_*bufs */ +#define DBG_RING 0x00000004 /*!< debug init./freeing of descr rings */ +#define DBG_RX_BUF 0x00000008 /*!< show alloc. of new rx buf (in IRQ context !) */ +#define DBG_TX_BUF 0x00000010 /*!< show arrival of new tx buf */ +#define DBG_TX_DONE 0x00000020 /*!< debug TX done */ +#define DBG_RX_DESCR 0x00000040 /*!< debug rx descr to be processed */ +#define DBG_RX_DATA 0x00000080 /*!< show some user data of incoming packet */ +#define DBG_EXIT 0x00000100 /*!< show exit code calls */ +#define DBG_INIT 0x00000200 /*!< show init. code calls */ +#define DBG_TX_RING_DUMP 0x00000400 /*!< dump the tx ring after creation */ +#define DBG_RX_RING_DUMP 0x00000800 /*!< dump the rx ring after creation */ +#define DBG_TX_DESCR 0x00001000 /*!< dump the setting of a descr for tx */ +#define DBG_TX_DATA 0x00002000 /*!< dump some tx data */ +#define DBG_IRQ 0x00004000 /*!< print inside the irq handler */ +#define DBG_POLL 0x00008000 /*!< dump info on poll procedure */ +#define DBG_MAC_ADDR 0x00010000 /*!< debug mac address setting */ +#define DBG_OPEN 0x00020000 /*!< debug open proc. */ static int debug = 0; module_param(debug, int, 0); MODULE_PARM_DESC(debug, "debug mask (-1 for all)"); -/* define wcd hich debugs are left in the code during compilation */ +/* define which debugs are left in the code during compilation */ #define DEBUG (-1) /* all debugs */ #define dbg(l, f, ...) \ @@ -128,6 +127,15 @@ MODULE_PARM_DESC(debug, "debug mask (-1 for all)"); #define MISR 0x3C /* Status register */ #define MIER 0x40 /* INT enable register */ #define MSK_INT 0x0000 /* Mask off interrupts */ +#define RX_FINISH 0x0001 /* rx finished irq */ +#define RX_NO_DESC 0x0002 /* rx no descr. avail. irq */ +#define RX_FIFO_FULL 0x0004 /* rx fifo full irq */ +#define RX_EARLY 0x0008 /* rx early irq */ +#define TX_FINISH 0x0010 /* tx finished irq */ +#define TX_EARLY 0x0080 /* tx early irq */ +#define EVENT_OVRFL 0x0100 /* event counter overflow irq */ +#define LINK_CHANGED 0x0200 /* PHY link changed irq */ + #define ME_CISR 0x44 /* Event counter INT status */ #define ME_CIER 0x48 /* Event counter INT enable */ #define MR_CNT 0x50 /* Successfully received packet counter */ @@ -164,7 +172,12 @@ MODULE_PARM_DESC(debug, "debug mask (-1 for all)"); #define MAX_BUF_SIZE 0x600 #define RX_DESC_SIZE (RX_DCNT * sizeof(struct r6040_descriptor)) #define TX_DESC_SIZE (TX_DCNT * sizeof(struct r6040_descriptor)) -#define MBCR_DEFAULT 0x012A /* MAC Bus Control Register */ +#define MBCR_DEFAULT 0x012A /* MAC Bus Control Register: + - wait 1 host clock until SDRAM bus request + becomes high priority + - RX FIFO: 32 byte + - TX FIFO: 64 byte + - FIFO transfer length: 16 byte */ #define MCAST_MAX 4 /* Max number multicast addresses to filter */ /* PHY settings */ @@ -176,10 +189,11 @@ MODULE_AUTHOR("Sten Wang ," MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("RDC R6040 NAPI PCI FastEthernet driver"); -#define RX_INT 0x0001 -#define TX_INT 0x0010 -#define RX_NO_DESC_INT 0x0002 -#define INT_MASK (RX_INT | TX_INT) +/*! which rx interrupts do we allow */ +#define RX_INTS (RX_FIFO_FULL|RX_NO_DESC|RX_FINISH) +/*! which tx interrupts do we allow */ +#define TX_INTS (TX_FINISH) +#define INT_MASK (RX_INTS | TX_INTS) struct r6040_descriptor { u16 status, len; /* 0-3 */ @@ -192,6 +206,21 @@ struct r6040_descriptor { u32 rev2; /* 1C-1F */ } __attribute__((aligned(32))); +/*! defines for the status field in the r6040_descriptor */ +#define DESC_STATUS_OWNER_MAC (1<<15) /*!< if set the MAC is the owner of this descriptor */ +#define DESC_STATUS_RX_OK (1<<14) /*!< rx was successful */ +#define DESC_STATUS_RX_ERR (1<<11) /*!< rx PHY error */ +#define DESC_STATUS_RX_ERR_DRIBBLE (1<<10) /*!< rx dribble packet */ +#define DESC_STATUS_RX_ERR_BUFLEN (1<< 9) /*!< rx length exceeded buffer size */ +#define DESC_STATUS_RX_ERR_LONG (1<< 8) /*!< rx length > maximum packet length */ +#define DESC_STATUS_RX_ERR_RUNT (1<< 7) /*!< rx: packet length < 64 byte */ +#define DESC_STATUS_RX_ERR_CRC (1<< 6) /*!< rx: crc error */ +#define DESC_STATUS_RX_BROADCAST (1<< 5) /*!< rx: broadcast (no error) */ +#define DESC_STATUS_RX_MULTICAST (1<< 4) /*!< rx: multicast (no error) */ +#define DESC_STATUS_RX_MCH_HIT (1<< 3) /*!< rx: multicast hit in hash table (no error) */ +#define DESC_STATUS_RX_MIDH_HIT (1<< 2) /*!< rx: MID table hit (no error) */ +#define DESC_STATUS_RX_IDX_MID_MASK 3 /*!< rx: mask for the index of matched MIDx */ + struct r6040_private { spinlock_t lock; /* driver lock */ struct timer_list timer; @@ -204,7 +233,7 @@ struct r6040_private { struct r6040_descriptor *tx_ring; dma_addr_t rx_ring_dma; dma_addr_t tx_ring_dma; - u16 tx_free_desc, rx_free_desc, phy_addr, phy_mode; + u16 tx_free_desc, phy_addr, phy_mode; u16 mcr0, mcr1; u16 switch_sig; struct net_device *dev; @@ -213,12 +242,20 @@ struct r6040_private { void __iomem *base; }; +struct net_device *parent_dev; +static char *parent = "wlan0"; +module_param(parent, charp, 0444); +MODULE_PARM_DESC(parent, "Parent network device name to get the MAC address from"); + static char version[] __devinitdata = KERN_INFO DRV_NAME ": RDC R6040 NAPI net driver," "version "DRV_VERSION " (" DRV_RELDATE ")\n"; static int phy_table[] = { PHY1_ADDR, PHY2_ADDR }; +/* forward declarations */ +void r6040_multicast_list(struct net_device *dev); + /* jal2: comment out to get more symbols for debugging */ //#define STATIC static #define STATIC @@ -228,23 +265,23 @@ static int phy_table[] = { PHY1_ADDR, PHY2_ADDR }; It is omitted if delim == '\0' */ STATIC char *hex2str(void *addr, char *buf, int nr_bytes, int delim) { - unsigned char *dst = addr; + unsigned char *src = addr; char *outb = buf; #define BIN2HEXDIGIT(x) ((x) < 10 ? '0'+(x) : 'A'-10+(x)) while (nr_bytes > 0) { - *outb++ = BIN2HEXDIGIT(*dst>>4); - *outb++ = BIN2HEXDIGIT(*dst&0xf); + *outb++ = BIN2HEXDIGIT(*src>>4); + *outb++ = BIN2HEXDIGIT(*src&0xf); if (delim) *outb++ = delim; nr_bytes--; - dst++; + src++; } if (delim) - dst--; - *dst = '\0'; + outb--; + *outb = '\0'; return buf; } @@ -332,6 +369,7 @@ void r6040_free_txbufs(struct net_device *dev) dbg(DBG_FREE_BUFS, "EXIT\n"); } +/*! unmap and free all rx skb */ void r6040_free_rxbufs(struct net_device *dev) { struct r6040_private *lp = netdev_priv(dev); @@ -361,50 +399,21 @@ void r6040_init_ring_desc(struct r6040_descriptor *desc_ring, dbg(DBG_RING, "desc_ring %p desc_dma %08x size x%x\n", desc_ring, desc_dma, size); + while (size-- > 0) { - mapping += sizeof(sizeof(*desc)); + mapping += sizeof(*desc); + memset(desc, 0, sizeof(*desc)); desc->ndesc = cpu_to_le32(mapping); desc->vndescp = desc + 1; desc++; } + + /* last descriptor points to first one to close the descriptor ring */ desc--; desc->ndesc = cpu_to_le32(desc_dma); desc->vndescp = desc_ring; } -/* Allocate skb buffer for rx descriptor */ -STATIC void rx_buf_alloc(struct r6040_private *lp, struct net_device *dev) -{ - struct r6040_descriptor *descptr; - void __iomem *ioaddr = lp->base; - - dbg(DBG_RX_BUF, "rx_insert %p rx_free_desc x%x dev %p\n", - lp->rx_insert_ptr, lp->rx_free_desc, dev); - - descptr = lp->rx_insert_ptr; - while (lp->rx_free_desc < RX_DCNT) { - descptr->skb_ptr = netdev_alloc_skb(dev, MAX_BUF_SIZE); - - dbg(DBG_RX_BUF, "alloc'ed skb %p for rx descptr %p\n", - descptr->skb_ptr, descptr); - - if (!descptr->skb_ptr) - break; - descptr->buf = cpu_to_le32(pci_map_single(lp->pdev, - descptr->skb_ptr->data, - MAX_BUF_SIZE, PCI_DMA_FROMDEVICE)); - descptr->status = 0x8000; - /* debug before descptr goes to next ! */ - dbg(DBG_RX_BUF, "descptr %p skb->data %p buf %08x rx_free_desc x%x\n", - descptr, descptr->skb_ptr->data, descptr->buf, lp->rx_free_desc); - descptr = descptr->vndescp; - lp->rx_free_desc++; - /* Trigger RX DMA */ - iowrite16(lp->mcr0 | 0x0002, ioaddr); - } - lp->rx_insert_ptr = descptr; -} - #if (DEBUG & DBG_TX_RING_DUMP) /*! dump the tx ring to syslog */ STATIC void @@ -429,10 +438,9 @@ dump_tx_ring(struct r6040_private *lp) } #endif /* #if (DEBUG & DBG_TX_RING_DUMP) */ -void r6040_alloc_txbufs(struct net_device *dev) +void r6040_init_txbufs(struct net_device *dev) { struct r6040_private *lp = netdev_priv(dev); - void __iomem *ioaddr = lp->base; lp->tx_free_desc = TX_DCNT; @@ -444,8 +452,6 @@ void r6040_alloc_txbufs(struct net_device *dev) dump_tx_ring(lp); } #endif - iowrite16(lp->tx_ring_dma, ioaddr + MTD_SA0); - iowrite16(lp->tx_ring_dma >> 16, ioaddr + MTD_SA1); } #if (DEBUG & DBG_RX_RING_DUMP) @@ -472,17 +478,31 @@ dump_rx_ring(struct r6040_private *lp) } #endif /* #if (DEBUG & DBG_TX_RING_DUMP) */ -void r6040_alloc_rxbufs(struct net_device *dev) +int r6040_alloc_rxbufs(struct net_device *dev) { struct r6040_private *lp = netdev_priv(dev); - void __iomem *ioaddr = lp->base; - - lp->rx_free_desc = 0; + struct r6040_descriptor *desc; + struct sk_buff *skb; + int rc; lp->rx_remove_ptr = lp->rx_insert_ptr = lp->rx_ring; r6040_init_ring_desc(lp->rx_ring, lp->rx_ring_dma, RX_DCNT); - rx_buf_alloc(lp, dev); + /* alloc skbs for the rx descriptors */ + desc = lp->rx_ring; + do { + if (!(skb=netdev_alloc_skb(dev, MAX_BUF_SIZE))) { + err("failed to alloc skb for rx\n"); + rc = -ENOMEM; + goto err_exit; + } + desc->skb_ptr = skb; + desc->buf = cpu_to_le32(pci_map_single(lp->pdev, + desc->skb_ptr->data, + MAX_BUF_SIZE, PCI_DMA_FROMDEVICE)); + desc->status = DESC_STATUS_OWNER_MAC; + desc = desc->vndescp; + } while (desc != lp->rx_ring); #if (DEBUG & DBG_RX_RING_DUMP) if (debug & DBG_RX_RING_DUMP) { @@ -490,8 +510,67 @@ void r6040_alloc_rxbufs(struct net_device *dev) } #endif + return 0; + +err_exit: + /* dealloc all previously allocated skb */ + r6040_free_rxbufs(dev); + return rc; +} + +/*! reset MAC and set all registers */ +void r6040_init_mac_regs(struct r6040_private *lp) +{ + void __iomem *ioaddr = lp->base; + int limit; + char obuf[3*ETH_ALEN] __attribute__ ((unused)); + + /* Mask Off Interrupt */ + iowrite16(MSK_INT, ioaddr + MIER); + + /* reset MAC */ + iowrite16(MAC_RST, ioaddr + MCR1); + udelay(100); + limit=2048; + while ((ioread16(ioaddr + MCR1) & MAC_RST) && limit-- > 0); + + /* Reset internal state machine */ + iowrite16(2, ioaddr + MAC_SM); + iowrite16(0, ioaddr + MAC_SM); + udelay(5000); + + /* Restore MAC Addresses */ + r6040_multicast_list(lp->dev); + + /* TODO: restore multcast and hash table */ + + /* MAC Bus Control Register */ + iowrite16(MBCR_DEFAULT, ioaddr + MBCR); + + /* Buffer Size Register */ + iowrite16(MAX_BUF_SIZE, ioaddr + MR_BSR); + + /* write tx ring start address */ + iowrite16(lp->tx_ring_dma, ioaddr + MTD_SA0); + iowrite16(lp->tx_ring_dma >> 16, ioaddr + MTD_SA1); + + /* write rx ring start address */ iowrite16(lp->rx_ring_dma, ioaddr + MRD_SA0); iowrite16(lp->rx_ring_dma >> 16, ioaddr + MRD_SA1); + + /* set interrupt waiting time and packet numbers */ + iowrite16(0, ioaddr + MT_ICR); + iowrite16(0, ioaddr + MR_ICR); + + /* enable interrupts */ + iowrite16(INT_MASK, ioaddr + MIER); + + /* enable tx and rx */ + iowrite16(lp->mcr0 | 0x0002, ioaddr); + + /* let TX poll the descriptors - we may got called by r6040_tx_timeout which has left + some unsent tx buffers */ + iowrite16(0x01, ioaddr + MTPR); } void r6040_tx_timeout(struct net_device *dev) @@ -499,27 +578,18 @@ void r6040_tx_timeout(struct net_device *dev) struct r6040_private *priv = netdev_priv(dev); void __iomem *ioaddr = priv->base; - printk(KERN_WARNING "%s: transmit timed out, status %4.4x, PHY status " - "%4.4x\n", - dev->name, ioread16(ioaddr + MIER), - mdio_read(dev, priv->mii_if.phy_id, MII_BMSR)); - - disable_irq(dev->irq); - napi_disable(&priv->napi); - spin_lock(&priv->lock); - /* Clear all descriptors */ - r6040_free_txbufs(dev); - r6040_free_rxbufs(dev); - r6040_alloc_txbufs(dev); - r6040_alloc_rxbufs(dev); - - /* Reset MAC */ - iowrite16(MAC_RST, ioaddr + MCR1); - spin_unlock(&priv->lock); - enable_irq(dev->irq); + /* we read MISR, which clears on read (i.e. we may loose an RX interupt, + but this is an error anyhow ... */ + printk(KERN_WARNING "%s: transmit timed out, int enable %4.4x " + "status %4.4x, PHY status %4.4x\n", + dev->name, ioread16(ioaddr + MIER), + ioread16(ioaddr + MISR), + mdio_read(dev, priv->mii_if.phy_id, MII_BMSR)); dev->stats.tx_errors++; - netif_wake_queue(dev); + + /* Reset MAC and re-init all registers */ + r6040_init_mac_regs(priv); } struct net_device_stats *r6040_get_stats(struct net_device *dev) @@ -543,28 +613,18 @@ void r6040_down(struct net_device *dev) void __iomem *ioaddr = lp->base; struct pci_dev *pdev = lp->pdev; int limit = 2048; - u16 *adrp; - u16 cmd; dbg(DBG_EXIT, "ENTER\n"); /* Stop MAC */ iowrite16(MSK_INT, ioaddr + MIER); /* Mask Off Interrupt */ iowrite16(MAC_RST, ioaddr + MCR1); /* Reset RDC MAC */ - while (limit--) { - cmd = ioread16(ioaddr + MCR1); - if (cmd & 0x1) - break; - } + udelay(100); + while ((ioread16(ioaddr+MCR1) & 1) && limit-- > 0); if (limit <= 0) - err("timeout while waiting for reset\n"); + err("timeout while waiting for reset done.\n"); - /* Restore MAC Address to MIDx */ - adrp = (u16 *) dev->dev_addr; - iowrite16(adrp[0], ioaddr + MID_0L); - iowrite16(adrp[1], ioaddr + MID_0M); - iowrite16(adrp[2], ioaddr + MID_0H); free_irq(dev->irq, dev); /* Free RX buffer */ @@ -588,8 +648,8 @@ int r6040_close(struct net_device *dev) /* deleted timer */ del_timer_sync(&lp->timer); - spin_lock_irq(&lp->lock); + napi_disable(&lp->napi); netif_stop_queue(dev); r6040_down(dev); spin_unlock_irq(&lp->lock); @@ -662,87 +722,78 @@ int r6040_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) int r6040_rx(struct net_device *dev, int limit) { struct r6040_private *priv = netdev_priv(dev); - int count; - void __iomem *ioaddr = priv->base; - u16 err; - - for (count = 0; count < limit; ++count) { - struct r6040_descriptor *descptr = priv->rx_remove_ptr; - struct sk_buff *skb_ptr; + int count=0; + struct r6040_descriptor *descptr = priv->rx_remove_ptr; + struct sk_buff *skb_ptr, *new_skb; + char obuf[2*32+1] __attribute__ ((unused)); /* for debugging */ - /* Disable RX interrupt */ - iowrite16(ioread16(ioaddr + MIER) & (~RX_INT), ioaddr + MIER); - descptr = priv->rx_remove_ptr; + while (count < limit && !(descptr->status & DESC_STATUS_OWNER_MAC)) { + /* limit not reached and the descriptor belongs to the CPU */ + dbg(DBG_RX_DESCR, "descptr %p status x%x data len x%x\n", + descptr, descptr->status, descptr->len); + /* Check for errors */ - err = ioread16(ioaddr + MLSR); - if (err & 0x0400) + if (descptr->status & DESC_STATUS_RX_ERR) { + dev->stats.rx_errors++; - /* RX FIFO over-run */ - if (err & 0x8000) - dev->stats.rx_fifo_errors++; - /* RX descriptor unavailable */ - if (err & 0x0080) - dev->stats.rx_frame_errors++; - /* Received packet with length over buffer lenght */ - if (err & 0x0020) - dev->stats.rx_over_errors++; - /* Received packet with too long or short */ - if (err & (0x0010 | 0x0008)) - dev->stats.rx_length_errors++; - /* Received packet with CRC errors */ - if (err & 0x0004) { - spin_lock(&priv->lock); - dev->stats.rx_crc_errors++; - spin_unlock(&priv->lock); - } - - dbg(DBG_RX_IRQ, "descptr %p status x%x err x%x\n", - descptr, descptr->status, err); - - while (priv->rx_free_desc) { - /* No RX packet */ - if (descptr->status & 0x8000) - break; - skb_ptr = descptr->skb_ptr; - if (!skb_ptr) { - printk(KERN_ERR "%s: Inconsistent RX" - "descriptor chain\n", - dev->name); - break; + + if (descptr->status & (DESC_STATUS_RX_ERR_DRIBBLE| + DESC_STATUS_RX_ERR_BUFLEN| + DESC_STATUS_RX_ERR_LONG| + DESC_STATUS_RX_ERR_RUNT)) { + /* packet too long or too short*/ + dev->stats.rx_length_errors++; } - descptr->skb_ptr = NULL; - skb_ptr->dev = priv->dev; - /* Do not count the CRC */ - skb_put(skb_ptr, descptr->len - 4); - pci_unmap_single(priv->pdev, le32_to_cpu(descptr->buf), - MAX_BUF_SIZE, PCI_DMA_FROMDEVICE); - skb_ptr->protocol = eth_type_trans(skb_ptr, priv->dev); - dbg(DBG_RX_DESCR, "descptr %p status x%x err x%x data len x%x\n", - descptr, descptr->status, err, descptr->len); - - { - char obuf[2*32+1] __attribute__ ((unused)); - dbg(DBG_RX_DATA, "rx len x%x: %s...\n", - descptr->len, - hex2str(skb_ptr->data, obuf, sizeof(obuf)/2, '\0')); + if (descptr->status & DESC_STATUS_RX_ERR_CRC) { + dev->stats.rx_crc_errors++; } - - /* Send to upper layer */ - netif_receive_skb(skb_ptr); - dev->last_rx = jiffies; - dev->stats.rx_packets++; - dev->stats.rx_bytes += descptr->len; - /* To next descriptor */ - descptr = descptr->vndescp; - priv->rx_free_desc--; + goto next_descr; } - priv->rx_remove_ptr = descptr; - } - /* Allocate new RX buffer */ - if (priv->rx_free_desc < RX_DCNT) - rx_buf_alloc(priv, priv->dev); + + /* successful received packet */ + + /* first try to allocate new skb. If this fails + we drop the packet and leave the old skb there.*/ + new_skb = netdev_alloc_skb(dev, MAX_BUF_SIZE); + if (!new_skb) { + dev->stats.rx_dropped++; + goto next_descr; + } + skb_ptr = descptr->skb_ptr; + skb_ptr->dev = priv->dev; + /* Do not count the CRC */ + skb_put(skb_ptr, descptr->len - 4); + pci_unmap_single(priv->pdev, le32_to_cpu(descptr->buf), + MAX_BUF_SIZE, PCI_DMA_FROMDEVICE); + skb_ptr->protocol = eth_type_trans(skb_ptr, priv->dev); + + dbg(DBG_RX_DATA, "rx len x%x: %s...\n", + descptr->len, + hex2str(skb_ptr->data, obuf, sizeof(obuf)/2, '\0')); + + /* Send to upper layer */ + netif_receive_skb(skb_ptr); + dev->last_rx = jiffies; + dev->stats.rx_packets++; + dev->stats.rx_bytes += (descptr->len-4); + + /* put new skb into descriptor */ + descptr->skb_ptr = new_skb; + descptr->buf = cpu_to_le32(pci_map_single(priv->pdev, + descptr->skb_ptr->data, + MAX_BUF_SIZE, PCI_DMA_FROMDEVICE)); + +next_descr: + /* put the descriptor back to the MAC */ + descptr->status = DESC_STATUS_OWNER_MAC; + descptr = descptr->vndescp; + count++; /* shall we count errors and dropped packets as well? */ + } /* while (limit && !(descptr->status & DESC_STATUS_OWNER_MAC)) */ + + /* remember next descriptor to check for rx */ + priv->rx_remove_ptr = descptr; return count; } @@ -766,8 +817,8 @@ void r6040_tx(struct net_device *dev) if (err & (0x2000 | 0x4000)) dev->stats.tx_carrier_errors++; - dbg(DBG_TX_IRQ, "descptr %p status x%x err x%x\n", - descptr, descptr->status, err); + dbg(DBG_TX_DONE, "descptr %p status x%x err x%x jiffies %lu\n", + descptr, descptr->status, err, jiffies); if (descptr->status & 0x8000) break; /* Not complete */ @@ -803,7 +854,7 @@ int r6040_poll(struct napi_struct *napi, int budget) if (work_done < budget) { netif_rx_complete(dev, napi); /* Enable RX interrupt */ - iowrite16(ioread16(ioaddr + MIER) | RX_INT, ioaddr + MIER); + iowrite16(ioread16(ioaddr + MIER) | RX_INTS, ioaddr + MIER); } return work_done; } @@ -816,22 +867,32 @@ irqreturn_t r6040_interrupt(int irq, void *dev_id) void __iomem *ioaddr = lp->base; u16 status; - /* Mask off RDC MAC interrupt */ - iowrite16(MSK_INT, ioaddr + MIER); /* Read MISR status and clear */ status = ioread16(ioaddr + MISR); - dbg(DBG_IRQ, "status x%x\n", status); + dbg(DBG_IRQ, "status x%x jiffies %lu\n", status, jiffies); if (status == 0x0000 || status == 0xffff) return IRQ_NONE; - /* RX interrupt request */ - if (status & 0x01) { + /* rx early / rx finish interrupt + or rx descriptor unavail. */ + if (status & RX_INTS) { + if (status & RX_NO_DESC) { + /* rx descriptor unavail. */ + dev->stats.rx_dropped++; + dev->stats.rx_missed_errors++; + } + /* Mask off RX interrupts */ + iowrite16(ioread16(ioaddr + MIER) & ~RX_INTS, ioaddr + MIER); netif_rx_schedule(dev, &lp->napi); - iowrite16(TX_INT, ioaddr + MIER); } + /* rx FIFO full */ + if (status & RX_FIFO_FULL) { + dev->stats.rx_fifo_errors++; + } + /* TX interrupt request */ if (status & 0x10) r6040_tx(dev); @@ -849,19 +910,19 @@ void r6040_poll_controller(struct net_device *dev) #endif /* Init RDC MAC */ -void r6040_up(struct net_device *dev) +int r6040_up(struct net_device *dev) { struct r6040_private *lp = netdev_priv(dev); void __iomem *ioaddr = lp->base; + int rc; dbg(DBG_INIT, "ENTER\n"); /* Initialise and alloc RX/TX buffers */ - r6040_alloc_txbufs(dev); - r6040_alloc_rxbufs(dev); + r6040_init_txbufs(dev); + if ((rc=r6040_alloc_rxbufs(dev))) + return rc; - /* Buffer Size Register */ - iowrite16(MAX_BUF_SIZE, ioaddr + MR_BSR); /* Read the PHY ID */ lp->switch_sig = phy_read(ioaddr, 0, 2); @@ -878,16 +939,9 @@ void r6040_up(struct net_device *dev) else lp->phy_mode = (PHY_MODE & 0x0100) ? 0x8000:0x0; } - /* MAC Bus Control Register */ - iowrite16(MBCR_DEFAULT, ioaddr + MBCR); - - /* MAC TX/RX Enable */ + +/* configure duplex mode */ lp->mcr0 |= lp->phy_mode; - iowrite16(lp->mcr0, ioaddr); - - /* set interrupt waiting time and packet numbers */ - iowrite16(0x0F06, ioaddr + MT_ICR); - iowrite16(0x0F06, ioaddr + MR_ICR); /* improve performance (by RDC guys) */ phy_write(ioaddr, 30, 17, (phy_read(ioaddr, 30, 17) | 0x4000)); @@ -895,8 +949,10 @@ void r6040_up(struct net_device *dev) phy_write(ioaddr, 0, 19, 0x0000); phy_write(ioaddr, 0, 30, 0x01F0); - /* Interrupt Mask Register */ - iowrite16(INT_MASK, ioaddr + MIER); + /* Reset MAC and init all registers */ + r6040_init_mac_regs(lp); + + return 0; } /* @@ -927,32 +983,6 @@ void r6040_timer(unsigned long data) mod_timer(&lp->timer, jiffies + round_jiffies(HZ)); } -/* Read/set MAC address routines */ -void r6040_mac_address(struct net_device *dev) -{ - struct r6040_private *lp = netdev_priv(dev); - void __iomem *ioaddr = lp->base; - u16 *adrp; - - /* MAC operation register */ - iowrite16(0x01, ioaddr + MCR1); /* Reset MAC */ - iowrite16(2, ioaddr + MAC_SM); /* Reset internal state machine */ - iowrite16(0, ioaddr + MAC_SM); - udelay(5000); - - /* Restore MAC Address */ - adrp = (u16 *) dev->dev_addr; - iowrite16(adrp[0], ioaddr + MID_0L); - iowrite16(adrp[1], ioaddr + MID_0M); - iowrite16(adrp[2], ioaddr + MID_0H); - - { - char obuf[3*ETH_ALEN] __attribute__ ((unused)); - dbg(DBG_MAC_ADDR, "set MAC addr %s\n", - hex2str(dev->dev_addr, obuf, ETH_ALEN, ':')); - } -} - int r6040_open(struct net_device *dev) { struct r6040_private *lp = netdev_priv(dev); @@ -967,9 +997,6 @@ int r6040_open(struct net_device *dev) dbg(DBG_OPEN, "got irq %d\n", dev->irq); - /* Set MAC address */ - r6040_mac_address(dev); - /* Allocate Descriptor memory */ lp->rx_ring = pci_alloc_consistent(lp->pdev, RX_DESC_SIZE, &lp->rx_ring_dma); @@ -988,8 +1015,14 @@ int r6040_open(struct net_device *dev) dbg(DBG_OPEN, "allocated tx ring\n"); - r6040_up(dev); - + if ((ret=r6040_up(dev))) { + pci_free_consistent(lp->pdev, TX_DESC_SIZE, lp->tx_ring, + lp->tx_ring_dma); + pci_free_consistent(lp->pdev, RX_DESC_SIZE, lp->rx_ring, + lp->rx_ring_dma); + return ret; + } + napi_enable(&lp->napi); netif_start_queue(dev); @@ -1035,8 +1068,8 @@ int r6040_start_xmit(struct sk_buff *skb, struct net_device *dev) descptr->buf = cpu_to_le32(pci_map_single(lp->pdev, skb->data, skb->len, PCI_DMA_TODEVICE)); - dbg(DBG_TX_DESCR, "desc @ %p: len x%x buf %08x skb->data %p skb->len x%x\n", - descptr, descptr->len, descptr->buf, skb->data, skb->len); + dbg(DBG_TX_DESCR, "desc @ %p: len x%x buf %08x skb->data %p skb->len x%x jiffies %lu\n", + descptr, descptr->len, descptr->buf, skb->data, skb->len, jiffies); { char obuf[2*32+1]; @@ -1058,6 +1091,7 @@ int r6040_start_xmit(struct sk_buff *skb, struct net_device *dev) return ret; } +/*! set MAC addresses and promiscous mode */ void r6040_multicast_list(struct net_device *dev) { struct r6040_private *lp = netdev_priv(dev); @@ -1067,6 +1101,7 @@ void r6040_multicast_list(struct net_device *dev) unsigned long flags; struct dev_mc_list *dmi = dev->mc_list; int i; + char obuf[3*ETH_ALEN] __attribute__ ((unused)); /* MAC Address */ adrp = (u16 *)dev->dev_addr; @@ -1074,6 +1109,9 @@ void r6040_multicast_list(struct net_device *dev) iowrite16(adrp[1], ioaddr + MID_0M); iowrite16(adrp[2], ioaddr + MID_0H); + dbg(DBG_MAC_ADDR, "%s: set MAC addr %s\n", + dev->name, hex2str(dev->dev_addr, obuf, ETH_ALEN, ':')); + /* Promiscous Mode */ spin_lock_irqsave(&lp->lock, flags); @@ -1195,7 +1233,6 @@ 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); @@ -1232,7 +1269,6 @@ int __devinit r6040_init_one(struct pci_dev *pdev, } SET_NETDEV_DEV(dev, &pdev->dev); lp = netdev_priv(dev); - lp->pdev = pdev; if (pci_request_regions(pdev, DRV_NAME)) { printk(KERN_ERR DRV_NAME ": Failed to request PCI regions\n"); @@ -1254,17 +1290,13 @@ 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; + lp->dev = dev; + /* Init RDC private data */ lp->mcr0 = 0x1002; lp->phy_addr = phy_table[card_idx]; @@ -1282,11 +1314,19 @@ 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}; - memcpy(dev->dev_addr, dflt_addr, ETH_ALEN); + 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 ^ 1; /* + 0 or 1 */ } #ifdef CONFIG_NET_POLL_CONTROLLER @@ -1348,6 +1388,9 @@ 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); }