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authorflorian <florian@3c298f89-4303-0410-b956-a3cf2f4a3e73>2008-06-16 13:24:09 +0000
committerflorian <florian@3c298f89-4303-0410-b956-a3cf2f4a3e73>2008-06-16 13:24:09 +0000
commit4c73b6629a09945637f20e93f073b4efbb35def4 (patch)
tree57d8f1cb2174c1a5aa0d9f2352e9440c99e10685 /target
parent54d4291e15abf62fcd2bd25a44b1055cdb919a07 (diff)
Hi,
this is the first of three patches to fix the ethernet driver of RDC R32xx applied to svn r10754. It adds debugs and make some procedures (r6040_*) global symbols in order to help with debugging kernel oops. Version is increased from 0.16 to 0.18 to avoid conflicts with the driver variant metioned in the X-WRT forum (call 0.17.3) Tested on a Sitecom WL-153. Signed-Off-By: Joerg Albert <jal2@gmx.de> git-svn-id: svn://svn.openwrt.org/openwrt/trunk@11506 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target')
-rw-r--r--target/linux/rdc/files/drivers/net/r6040.c304
1 files changed, 265 insertions, 39 deletions
diff --git a/target/linux/rdc/files/drivers/net/r6040.c b/target/linux/rdc/files/drivers/net/r6040.c
index 169edc154..032884e34 100644
--- a/target/linux/rdc/files/drivers/net/r6040.c
+++ b/target/linux/rdc/files/drivers/net/r6040.c
@@ -50,8 +50,45 @@
#include <asm/processor.h>
#define DRV_NAME "r6040"
-#define DRV_VERSION "0.16"
-#define DRV_RELDATE "10Nov2007"
+#define DRV_VERSION "0.18"
+#define DRV_RELDATE "13Jun2008"
+
+/* 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. */
+
+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 DEBUG (-1) /* all debugs */
+
+#define dbg(l, f, ...) \
+ do { \
+ if ((DEBUG & l) && (debug & l)) { \
+ printk(KERN_INFO DRV_NAME " %s: " f, __FUNCTION__, ## __VA_ARGS__); \
+ } \
+ } while (0)
+
+#define err(f, ...) printk(KERN_WARNING DRV_NAME " %s: " f, __FUNCTION__, ## __VA_ARGS__)
/* PHY CHIP Address */
#define PHY1_ADDR 1 /* For MAC1 */
@@ -182,11 +219,43 @@ static char version[] __devinitdata = KERN_INFO DRV_NAME
static int phy_table[] = { PHY1_ADDR, PHY2_ADDR };
+/* jal2: comment out to get more symbols for debugging */
+//#define STATIC static
+#define STATIC
+
+#if DEBUG
+/*! hexdump an memory area into a string. delim is taken as the delimiter between two bytes.
+ It is omitted if delim == '\0' */
+STATIC char *hex2str(void *addr, char *buf, int nr_bytes, int delim)
+{
+ unsigned char *dst = 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);
+ if (delim)
+ *outb++ = delim;
+ nr_bytes--;
+ dst++;
+ }
+
+ if (delim)
+ dst--;
+ *dst = '\0';
+ return buf;
+}
+
+#endif /* #if DEBUG */
+
/* Read a word data from PHY Chip */
-static int phy_read(void __iomem *ioaddr, int phy_addr, int reg)
+STATIC int phy_read(void __iomem *ioaddr, int phy_addr, int reg)
{
int limit = 2048;
u16 cmd;
+ int rc;
iowrite16(MDIO_READ + reg + (phy_addr << 8), ioaddr + MMDIO);
/* Wait for the read bit to be cleared */
@@ -196,15 +265,24 @@ static int phy_read(void __iomem *ioaddr, int phy_addr, int reg)
break;
}
- return ioread16(ioaddr + MMRD);
+ if (limit <= 0)
+ err("phy addr x%x reg x%x timed out\n",
+ phy_addr, reg);
+
+ rc=ioread16(ioaddr + MMRD);
+
+ dbg(DBG_PHY, "phy addr x%x reg x%x val x%x\n", phy_addr, reg, rc);
+ return rc;
}
/* Write a word data from PHY Chip */
-static void phy_write(void __iomem *ioaddr, int phy_addr, int reg, u16 val)
+STATIC void phy_write(void __iomem *ioaddr, int phy_addr, int reg, u16 val)
{
int limit = 2048;
u16 cmd;
+ dbg(DBG_PHY, "phy addr x%x reg x%x val x%x\n", phy_addr, reg, val);
+
iowrite16(val, ioaddr + MMWD);
/* Write the command to the MDIO bus */
iowrite16(MDIO_WRITE + reg + (phy_addr << 8), ioaddr + MMDIO);
@@ -214,9 +292,12 @@ static void phy_write(void __iomem *ioaddr, int phy_addr, int reg, u16 val)
if (cmd & MDIO_WRITE)
break;
}
+ if (limit <= 0)
+ err("phy addr x%x reg x%x val x%x timed out\n",
+ phy_addr, reg, val);
}
-static int mdio_read(struct net_device *dev, int mii_id, int reg)
+STATIC int mdio_read(struct net_device *dev, int mii_id, int reg)
{
struct r6040_private *lp = netdev_priv(dev);
void __iomem *ioaddr = lp->base;
@@ -224,7 +305,7 @@ static int mdio_read(struct net_device *dev, int mii_id, int reg)
return (phy_read(ioaddr, lp->phy_addr, reg));
}
-static void mdio_write(struct net_device *dev, int mii_id, int reg, int val)
+STATIC void mdio_write(struct net_device *dev, int mii_id, int reg, int val)
{
struct r6040_private *lp = netdev_priv(dev);
void __iomem *ioaddr = lp->base;
@@ -232,11 +313,12 @@ static void mdio_write(struct net_device *dev, int mii_id, int reg, int val)
phy_write(ioaddr, lp->phy_addr, reg, val);
}
-static void r6040_free_txbufs(struct net_device *dev)
+void r6040_free_txbufs(struct net_device *dev)
{
struct r6040_private *lp = netdev_priv(dev);
int i;
+ dbg(DBG_FREE_BUFS, "ENTER\n");
for (i = 0; i < TX_DCNT; i++) {
if (lp->tx_insert_ptr->skb_ptr) {
pci_unmap_single(lp->pdev,
@@ -247,13 +329,15 @@ static void r6040_free_txbufs(struct net_device *dev)
}
lp->tx_insert_ptr = lp->tx_insert_ptr->vndescp;
}
+ dbg(DBG_FREE_BUFS, "EXIT\n");
}
-static void r6040_free_rxbufs(struct net_device *dev)
+void r6040_free_rxbufs(struct net_device *dev)
{
struct r6040_private *lp = netdev_priv(dev);
int i;
+ dbg(DBG_FREE_BUFS, "ENTER\n");
for (i = 0; i < RX_DCNT; i++) {
if (lp->rx_insert_ptr->skb_ptr) {
pci_unmap_single(lp->pdev,
@@ -264,14 +348,19 @@ static void r6040_free_rxbufs(struct net_device *dev)
}
lp->rx_insert_ptr = lp->rx_insert_ptr->vndescp;
}
+ dbg(DBG_FREE_BUFS, "EXIT\n");
+
}
-static void r6040_init_ring_desc(struct r6040_descriptor *desc_ring,
+void r6040_init_ring_desc(struct r6040_descriptor *desc_ring,
dma_addr_t desc_dma, int size)
{
struct r6040_descriptor *desc = desc_ring;
dma_addr_t mapping = desc_dma;
+ 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));
desc->ndesc = cpu_to_le32(mapping);
@@ -284,21 +373,30 @@ static void r6040_init_ring_desc(struct r6040_descriptor *desc_ring,
}
/* Allocate skb buffer for rx descriptor */
-static void rx_buf_alloc(struct r6040_private *lp, struct net_device *dev)
+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 */
@@ -307,7 +405,31 @@ static void rx_buf_alloc(struct r6040_private *lp, struct net_device *dev)
lp->rx_insert_ptr = descptr;
}
-static void r6040_alloc_txbufs(struct net_device *dev)
+#if (DEBUG & DBG_TX_RING_DUMP)
+/*! dump the tx ring to syslog */
+STATIC void
+dump_tx_ring(struct r6040_private *lp)
+{
+ int i;
+ struct r6040_descriptor *ptr;
+
+ printk(KERN_INFO "%s: nr_desc x%x tx_ring %p tx_ring_dma %08x "
+ "tx_insert %p tx_remove %p\n",
+ DRV_NAME, TX_DCNT, lp->tx_ring, lp->tx_ring_dma,
+ lp->tx_insert_ptr, lp->tx_remove_ptr);
+
+ if (lp->tx_ring) {
+ for(i=0, ptr=lp->tx_ring; i < TX_DCNT; i++, ptr++) {
+ printk(KERN_INFO "%s: %d. descr: status x%x len x%x "
+ "ndesc %08x vbufp %p vndescp %p skb_ptr %p\n",
+ DRV_NAME, i, ptr->status, ptr->len,
+ ptr->ndesc, ptr->vbufp, ptr->vndescp, ptr->skb_ptr);
+ }
+ }
+}
+#endif /* #if (DEBUG & DBG_TX_RING_DUMP) */
+
+void r6040_alloc_txbufs(struct net_device *dev)
{
struct r6040_private *lp = netdev_priv(dev);
void __iomem *ioaddr = lp->base;
@@ -317,11 +439,40 @@ static void r6040_alloc_txbufs(struct net_device *dev)
lp->tx_remove_ptr = lp->tx_insert_ptr = lp->tx_ring;
r6040_init_ring_desc(lp->tx_ring, lp->tx_ring_dma, TX_DCNT);
+#if (DEBUG & DBG_TX_RING_DUMP)
+ if (debug & DBG_TX_RING_DUMP) {
+ dump_tx_ring(lp);
+ }
+#endif
iowrite16(lp->tx_ring_dma, ioaddr + MTD_SA0);
iowrite16(lp->tx_ring_dma >> 16, ioaddr + MTD_SA1);
}
-static void r6040_alloc_rxbufs(struct net_device *dev)
+#if (DEBUG & DBG_RX_RING_DUMP)
+/*! dump the rx ring to syslog */
+STATIC void
+dump_rx_ring(struct r6040_private *lp)
+{
+ int i;
+ struct r6040_descriptor *ptr;
+
+ printk(KERN_INFO "%s: nr_desc x%x rx_ring %p rx_ring_dma %08x "
+ "rx_insert %p rx_remove %p\n",
+ DRV_NAME, RX_DCNT, lp->rx_ring, lp->rx_ring_dma,
+ lp->rx_insert_ptr, lp->rx_remove_ptr);
+
+ if (lp->rx_ring) {
+ for(i=0, ptr=lp->rx_ring; i < RX_DCNT; i++, ptr++) {
+ printk(KERN_INFO "%s: %d. descr: status x%x len x%x "
+ "ndesc %08x vbufp %p vndescp %p skb_ptr %p\n",
+ DRV_NAME, i, ptr->status, ptr->len,
+ ptr->ndesc, ptr->vbufp, ptr->vndescp, ptr->skb_ptr);
+ }
+ }
+}
+#endif /* #if (DEBUG & DBG_TX_RING_DUMP) */
+
+void r6040_alloc_rxbufs(struct net_device *dev)
{
struct r6040_private *lp = netdev_priv(dev);
void __iomem *ioaddr = lp->base;
@@ -333,11 +484,17 @@ static void r6040_alloc_rxbufs(struct net_device *dev)
rx_buf_alloc(lp, dev);
+#if (DEBUG & DBG_RX_RING_DUMP)
+ if (debug & DBG_RX_RING_DUMP) {
+ dump_rx_ring(lp);
+ }
+#endif
+
iowrite16(lp->rx_ring_dma, ioaddr + MRD_SA0);
iowrite16(lp->rx_ring_dma >> 16, ioaddr + MRD_SA1);
}
-static void r6040_tx_timeout(struct net_device *dev)
+void r6040_tx_timeout(struct net_device *dev)
{
struct r6040_private *priv = netdev_priv(dev);
void __iomem *ioaddr = priv->base;
@@ -365,7 +522,7 @@ static void r6040_tx_timeout(struct net_device *dev)
netif_wake_queue(dev);
}
-static struct net_device_stats *r6040_get_stats(struct net_device *dev)
+struct net_device_stats *r6040_get_stats(struct net_device *dev)
{
struct r6040_private *priv = netdev_priv(dev);
void __iomem *ioaddr = priv->base;
@@ -380,7 +537,7 @@ static struct net_device_stats *r6040_get_stats(struct net_device *dev)
}
/* Stop RDC MAC and Free the allocated resource */
-static void r6040_down(struct net_device *dev)
+void r6040_down(struct net_device *dev)
{
struct r6040_private *lp = netdev_priv(dev);
void __iomem *ioaddr = lp->base;
@@ -389,6 +546,8 @@ static void r6040_down(struct net_device *dev)
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 */
@@ -398,6 +557,9 @@ static void r6040_down(struct net_device *dev)
break;
}
+ if (limit <= 0)
+ err("timeout while waiting for reset\n");
+
/* Restore MAC Address to MIDx */
adrp = (u16 *) dev->dev_addr;
iowrite16(adrp[0], ioaddr + MID_0L);
@@ -414,12 +576,16 @@ static void r6040_down(struct net_device *dev)
/* Free Descriptor memory */
pci_free_consistent(pdev, RX_DESC_SIZE, lp->rx_ring, lp->rx_ring_dma);
pci_free_consistent(pdev, TX_DESC_SIZE, lp->tx_ring, lp->tx_ring_dma);
+
+ dbg(DBG_EXIT, "EXIT\n");
}
-static int r6040_close(struct net_device *dev)
+int r6040_close(struct net_device *dev)
{
struct r6040_private *lp = netdev_priv(dev);
+ dbg(DBG_EXIT, "ENTER\n");
+
/* deleted timer */
del_timer_sync(&lp->timer);
@@ -428,11 +594,12 @@ static int r6040_close(struct net_device *dev)
r6040_down(dev);
spin_unlock_irq(&lp->lock);
+ dbg(DBG_EXIT, "EXIT\n");
return 0;
}
-/* Status of PHY CHIP */
-static int phy_mode_chk(struct net_device *dev)
+/* Status of PHY CHIP. Returns 0x8000 for full duplex, 0 for half duplex */
+STATIC int phy_mode_chk(struct net_device *dev)
{
struct r6040_private *lp = netdev_priv(dev);
void __iomem *ioaddr = lp->base;
@@ -463,10 +630,11 @@ static int phy_mode_chk(struct net_device *dev)
phy_dat = 0x0000;
}
+ dbg(DBG_PHY, "RETURN x%x\n", phy_dat);
return phy_dat;
};
-static void r6040_set_carrier(struct mii_if_info *mii)
+void r6040_set_carrier(struct mii_if_info *mii)
{
if (phy_mode_chk(mii->dev)) {
/* autoneg is off: Link is always assumed to be up */
@@ -476,7 +644,7 @@ static void r6040_set_carrier(struct mii_if_info *mii)
phy_mode_chk(mii->dev);
}
-static int r6040_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+int r6040_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
{
struct r6040_private *lp = netdev_priv(dev);
struct mii_ioctl_data *data = if_mii(rq);
@@ -491,7 +659,7 @@ static int r6040_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
return rc;
}
-static int r6040_rx(struct net_device *dev, int limit)
+int r6040_rx(struct net_device *dev, int limit)
{
struct r6040_private *priv = netdev_priv(dev);
int count;
@@ -529,6 +697,9 @@ static int r6040_rx(struct net_device *dev, int limit)
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)
@@ -547,6 +718,17 @@ static int r6040_rx(struct net_device *dev, int limit)
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'));
+ }
+
/* Send to upper layer */
netif_receive_skb(skb_ptr);
dev->last_rx = jiffies;
@@ -565,7 +747,7 @@ static int r6040_rx(struct net_device *dev, int limit)
return count;
}
-static void r6040_tx(struct net_device *dev)
+void r6040_tx(struct net_device *dev)
{
struct r6040_private *priv = netdev_priv(dev);
struct r6040_descriptor *descptr;
@@ -584,6 +766,9 @@ static 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);
+
if (descptr->status & 0x8000)
break; /* Not complete */
skb_ptr = descptr->skb_ptr;
@@ -603,7 +788,7 @@ static void r6040_tx(struct net_device *dev)
spin_unlock(&priv->lock);
}
-static int r6040_poll(struct napi_struct *napi, int budget)
+int r6040_poll(struct napi_struct *napi, int budget)
{
struct r6040_private *priv =
container_of(napi, struct r6040_private, napi);
@@ -613,6 +798,8 @@ static int r6040_poll(struct napi_struct *napi, int budget)
work_done = r6040_rx(dev, budget);
+ dbg(DBG_POLL, "budget x%x done x%x\n", budget, work_done);
+
if (work_done < budget) {
netif_rx_complete(dev, napi);
/* Enable RX interrupt */
@@ -622,7 +809,7 @@ static int r6040_poll(struct napi_struct *napi, int budget)
}
/* The RDC interrupt handler. */
-static irqreturn_t r6040_interrupt(int irq, void *dev_id)
+irqreturn_t r6040_interrupt(int irq, void *dev_id)
{
struct net_device *dev = dev_id;
struct r6040_private *lp = netdev_priv(dev);
@@ -634,6 +821,8 @@ static irqreturn_t r6040_interrupt(int irq, void *dev_id)
/* Read MISR status and clear */
status = ioread16(ioaddr + MISR);
+ dbg(DBG_IRQ, "status x%x\n", status);
+
if (status == 0x0000 || status == 0xffff)
return IRQ_NONE;
@@ -651,7 +840,7 @@ static irqreturn_t r6040_interrupt(int irq, void *dev_id)
}
#ifdef CONFIG_NET_POLL_CONTROLLER
-static void r6040_poll_controller(struct net_device *dev)
+void r6040_poll_controller(struct net_device *dev)
{
disable_irq(dev->irq);
r6040_interrupt(dev->irq, dev);
@@ -660,11 +849,13 @@ static void r6040_poll_controller(struct net_device *dev)
#endif
/* Init RDC MAC */
-static void r6040_up(struct net_device *dev)
+void r6040_up(struct net_device *dev)
{
struct r6040_private *lp = netdev_priv(dev);
void __iomem *ioaddr = lp->base;
+ dbg(DBG_INIT, "ENTER\n");
+
/* Initialise and alloc RX/TX buffers */
r6040_alloc_txbufs(dev);
r6040_alloc_rxbufs(dev);
@@ -712,7 +903,7 @@ static void r6040_up(struct net_device *dev)
A periodic timer routine
Polling PHY Chip Link Status
*/
-static void r6040_timer(unsigned long data)
+void r6040_timer(unsigned long data)
{
struct net_device *dev = (struct net_device *)data;
struct r6040_private *lp = netdev_priv(dev);
@@ -729,7 +920,7 @@ static void r6040_timer(unsigned long data)
lp->phy_mode = phy_mode;
lp->mcr0 = (lp->mcr0 & 0x7fff) | phy_mode;
iowrite16(lp->mcr0, ioaddr);
- printk(KERN_INFO "Link Change %x \n", ioread16(ioaddr));
+ printk(KERN_INFO "Link Change x%x \n", ioread16(ioaddr));
}
/* Timer active again */
@@ -737,7 +928,7 @@ static void r6040_timer(unsigned long data)
}
/* Read/set MAC address routines */
-static void r6040_mac_address(struct net_device *dev)
+void r6040_mac_address(struct net_device *dev)
{
struct r6040_private *lp = netdev_priv(dev);
void __iomem *ioaddr = lp->base;
@@ -754,19 +945,28 @@ static void r6040_mac_address(struct net_device *dev)
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, ':'));
+ }
}
-static int r6040_open(struct net_device *dev)
+int r6040_open(struct net_device *dev)
{
struct r6040_private *lp = netdev_priv(dev);
int ret;
+ dbg(DBG_OPEN, "ENTER\n");
/* Request IRQ and Register interrupt handler */
ret = request_irq(dev->irq, &r6040_interrupt,
IRQF_SHARED, dev->name, dev);
if (ret)
return ret;
+ dbg(DBG_OPEN, "got irq %d\n", dev->irq);
+
/* Set MAC address */
r6040_mac_address(dev);
@@ -776,6 +976,8 @@ static int r6040_open(struct net_device *dev)
if (!lp->rx_ring)
return -ENOMEM;
+ dbg(DBG_OPEN, "allocated rx ring\n");
+
lp->tx_ring =
pci_alloc_consistent(lp->pdev, TX_DESC_SIZE, &lp->tx_ring_dma);
if (!lp->tx_ring) {
@@ -784,6 +986,8 @@ static int r6040_open(struct net_device *dev)
return -ENOMEM;
}
+ dbg(DBG_OPEN, "allocated tx ring\n");
+
r6040_up(dev);
napi_enable(&lp->napi);
@@ -796,7 +1000,7 @@ static int r6040_open(struct net_device *dev)
return 0;
}
-static int r6040_start_xmit(struct sk_buff *skb, struct net_device *dev)
+int r6040_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct r6040_private *lp = netdev_priv(dev);
struct r6040_descriptor *descptr;
@@ -830,6 +1034,16 @@ static int r6040_start_xmit(struct sk_buff *skb, struct net_device *dev)
descptr->skb_ptr = skb;
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);
+
+ {
+ char obuf[2*32+1];
+ dbg(DBG_TX_DATA, "tx len x%x: %s\n",
+ descptr->len, hex2str(skb->data, obuf, sizeof(obuf)/2, '\0'));
+ }
+
descptr->status = 0x8000;
/* Trigger the MAC to check the TX descriptor */
iowrite16(0x01, ioaddr + MTPR);
@@ -844,7 +1058,7 @@ static int r6040_start_xmit(struct sk_buff *skb, struct net_device *dev)
return ret;
}
-static void r6040_multicast_list(struct net_device *dev)
+void r6040_multicast_list(struct net_device *dev)
{
struct r6040_private *lp = netdev_priv(dev);
void __iomem *ioaddr = lp->base;
@@ -922,7 +1136,7 @@ static void r6040_multicast_list(struct net_device *dev)
}
}
-static void netdev_get_drvinfo(struct net_device *dev,
+STATIC void netdev_get_drvinfo(struct net_device *dev,
struct ethtool_drvinfo *info)
{
struct r6040_private *rp = netdev_priv(dev);
@@ -932,7 +1146,7 @@ static void netdev_get_drvinfo(struct net_device *dev,
strcpy(info->bus_info, pci_name(rp->pdev));
}
-static int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+STATIC int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
{
struct r6040_private *rp = netdev_priv(dev);
int rc;
@@ -944,7 +1158,7 @@ static int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
return rc;
}
-static int netdev_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+STATIC int netdev_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
{
struct r6040_private *rp = netdev_priv(dev);
int rc;
@@ -957,7 +1171,7 @@ static int netdev_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
return rc;
}
-static u32 netdev_get_link(struct net_device *dev)
+STATIC u32 netdev_get_link(struct net_device *dev)
{
struct r6040_private *rp = netdev_priv(dev);
@@ -971,7 +1185,7 @@ static struct ethtool_ops netdev_ethtool_ops = {
.get_link = netdev_get_link,
};
-static int __devinit r6040_init_one(struct pci_dev *pdev,
+int __devinit r6040_init_one(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
struct net_device *dev;
@@ -984,6 +1198,7 @@ static int __devinit r6040_init_one(struct pci_dev *pdev,
u16 *adrp;
printk(KERN_INFO "%s\n", version);
+ printk(KERN_INFO DRV_NAME ": debug %x\n", debug);
err = pci_enable_device(pdev);
if (err)
@@ -1065,6 +1280,15 @@ static int __devinit r6040_init_one(struct pci_dev *pdev,
dev->ethtool_ops = &netdev_ethtool_ops;
dev->tx_timeout = &r6040_tx_timeout;
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" */
+ static const u8 dflt_addr[ETH_ALEN] = {0,0x50,0xfc,2,3,4};
+ memcpy(dev->dev_addr, dflt_addr, ETH_ALEN);
+ }
+
#ifdef CONFIG_NET_POLL_CONTROLLER
dev->poll_controller = r6040_poll_controller;
#endif
@@ -1082,6 +1306,8 @@ static int __devinit r6040_init_one(struct pci_dev *pdev,
printk(KERN_ERR DRV_NAME ": Failed to register net device\n");
goto err_out_res;
}
+
+ dbg(DBG_INIT, "%s successfully registered\n", dev->name);
return 0;
err_out_res:
@@ -1094,7 +1320,7 @@ err_out_disable:
return err;
}
-static void __devexit r6040_remove_one(struct pci_dev *pdev)
+void __devexit r6040_remove_one(struct pci_dev *pdev)
{
struct net_device *dev = pci_get_drvdata(pdev);