#include <asm/processor.h>
#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, ...) \
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;
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;
void __iomem *base;
};
-struct net_device *parent_dev;
-static char *parent;
+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
+static u8 mac_base[ETH_ALEN] = {0,0x50,0xfc,2,3,4};
+module_param_array(mac_base, byte, NULL, 0444);
+MODULE_PARM_DESC(mac_base, "Starting MAC address");
+
+static int reverse = 1;
+module_param(reverse, invbool, 0444);
+MODULE_PARM_DESC(reverse, "Reverse card indices");
+
+static char version[] __devinitdata = DRV_NAME
": RDC R6040 NAPI net driver,"
- "version "DRV_VERSION " (" DRV_RELDATE ")\n";
+ "version "DRV_VERSION " (" DRV_RELDATE ")";
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;
}
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);
dbg(DBG_RING, "desc_ring %p desc_dma %08x size x%x\n",
desc_ring, desc_dma, size);
+
while (size-- > 0) {
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;
-
- 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++;
- }
- lp->rx_insert_ptr = descptr;
-}
-
#if (DEBUG & DBG_TX_RING_DUMP)
/*! dump the tx ring to syslog */
STATIC void
}
#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);
}
#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);
-
- 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) {
dump_rx_ring(lp);
}
#endif
+
+ return 0;
+
+err_exit:
+ /* dealloc all previously allocated skb */
+ r6040_free_rxbufs(dev);
+ return rc;
}
/*! reset MAC and set all registers */
iowrite16(lp->rx_ring_dma >> 16, ioaddr + MRD_SA1);
/* set interrupt waiting time and packet numbers */
- iowrite16(0x0F06, ioaddr + MT_ICR);
- iowrite16(0x0F06, ioaddr + MR_ICR);
+ iowrite16(0, ioaddr + MT_ICR);
+ iowrite16(0, ioaddr + MR_ICR);
/* enable interrupts */
iowrite16(INT_MASK, ioaddr + MIER);
/* 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);
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;
+ 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 */
- for (count = 0; count < limit; ++count) {
- struct r6040_descriptor *descptr = priv->rx_remove_ptr;
- struct sk_buff *skb_ptr;
-
- 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;
}
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 */
/* 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 FIFO full */
- if (status & (1<<2)) {
+ if (status & RX_FIFO_FULL) {
dev->stats.rx_fifo_errors++;
}
#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;
/* Read the PHY ID */
lp->switch_sig = phy_read(ioaddr, 0, 2);
/* Reset MAC and init all registers */
r6040_init_mac_regs(lp);
+
+ return 0;
}
/*
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);
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];
int __devinit r6040_init_one(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
- struct net_device *dev;
+ struct net_device *dev, *parent_dev;
struct r6040_private *lp;
void __iomem *ioaddr;
int err, io_size = R6040_IO_SIZE;
static int card_idx = -1;
- int bar = 0;
long pioaddr;
printk(KERN_INFO "%s\n", version);
}
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");
goto err_out_disable;
}
- ioaddr = pci_iomap(pdev, bar, io_size);
+ ioaddr = pci_iomap(pdev, 0, io_size);
if (!ioaddr) {
printk(KERN_ERR "ioremap failed for device %s\n",
pci_name(pdev));
/* 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];
dev->tx_timeout = &r6040_tx_timeout;
dev->watchdog_timeo = TX_TIMEOUT;
- {
- /* 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) {
+ /*
+ You must specify a netdevice with a "parent=" parameter, whose address
+ is copied, or an array of bytes comprising a literal address; otherwise
+ the (default) address of the Sitecom WL-153 bootloader is used.
+ */
+ memcpy(dev->dev_addr, mac_base, ETH_ALEN);
+ if (parent) {
+ parent_dev = __dev_get_by_name(&init_net, parent);
+ 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 */
}
+ dev->dev_addr[ETH_ALEN-1] += card_idx ^ reverse; /* + 0 or 1 */
#ifdef CONFIG_NET_POLL_CONTROLLER
dev->poll_controller = r6040_poll_controller;
lp->mii_if.phy_id_mask = 0x1f;
lp->mii_if.reg_num_mask = 0x1f;
+ if (reverse && ((card_idx & 1) == 0) && (dev_alloc_name(dev, dev->name)
+ >= 0))
+ for (err = strlen(dev->name); err; err--) {
+ if (dev->name[err - 1]++ != '9')
+ break;
+ dev->name[err - 1] = '0';
+ }
+
/* Register net device. After this dev->name assign */
err = register_netdev(dev);
if (err) {
static int __init r6040_init(void)
{
- if (parent)
- parent_dev = dev_get_by_name(&init_net, parent);
-
return pci_register_driver(&r6040_driver);
}
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