* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
-#include <linux/config.h>
#include <linux/in.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include "skge.h"
#define DRV_NAME "skge"
-#define DRV_VERSION "1.5"
+#define DRV_VERSION "1.8"
#define PFX DRV_NAME " "
#define DEFAULT_TX_RING_SIZE 128
static int skge_up(struct net_device *dev);
static int skge_down(struct net_device *dev);
static void skge_phy_reset(struct skge_port *skge);
-static void skge_tx_clean(struct skge_port *skge);
+static void skge_tx_clean(struct net_device *dev);
static int xm_phy_write(struct skge_hw *hw, int port, u16 reg, u16 val);
static int gm_phy_write(struct skge_hw *hw, int port, u16 reg, u16 val);
static void genesis_get_stats(struct skge_port *skge, u64 *data);
static const int rxqaddr[] = { Q_R1, Q_R2 };
static const u32 rxirqmask[] = { IS_R1_F, IS_R2_F };
static const u32 txirqmask[] = { IS_XA1_F, IS_XA2_F };
+static const u32 irqmask[] = { IS_R1_F|IS_XA1_F, IS_R2_F|IS_XA2_F };
static int skge_get_regs_len(struct net_device *dev)
{
/* Chip internal frequency for clock calculations */
static inline u32 hwkhz(const struct skge_hw *hw)
{
- if (hw->chip_id == CHIP_ID_GENESIS)
- return 53215; /* or: 53.125 MHz */
- else
- return 78215; /* or: 78.125 MHz */
+ return (hw->chip_id == CHIP_ID_GENESIS) ? 53125 : 78125;
}
/* Chip HZ to microseconds */
return 0;
}
-static struct ethtool_ops skge_ethtool_ops = {
+static const struct ethtool_ops skge_ethtool_ops = {
.get_settings = skge_get_settings,
.set_settings = skge_set_settings,
.get_drvinfo = skge_get_drvinfo,
/* Allocate buffers for receive ring
* For receive: to_clean is next received frame.
*/
-static int skge_rx_fill(struct skge_port *skge)
+static int skge_rx_fill(struct net_device *dev)
{
+ struct skge_port *skge = netdev_priv(dev);
struct skge_ring *ring = &skge->rx_ring;
struct skge_element *e;
do {
struct sk_buff *skb;
- skb = alloc_skb(skge->rx_buf_size + NET_IP_ALIGN, GFP_KERNEL);
+ skb = __netdev_alloc_skb(dev, skge->rx_buf_size + NET_IP_ALIGN,
+ GFP_KERNEL);
if (!skb)
return -ENOMEM;
if (err)
goto free_pci_mem;
- err = skge_rx_fill(skge);
+ err = skge_rx_fill(dev);
if (err)
goto free_rx_ring;
skge_write8(hw, Q_ADDR(rxqaddr[port], Q_CSR), CSR_START | CSR_IRQ_CL_F);
skge_led(skge, LED_MODE_ON);
+ netif_poll_enable(dev);
return 0;
free_rx_ring:
skge_led(skge, LED_MODE_OFF);
- skge_tx_clean(skge);
+ netif_poll_disable(dev);
+ skge_tx_clean(dev);
skge_rx_clean(skge);
kfree(skge->rx_ring.start);
{
struct skge_port *skge = netdev_priv(dev);
struct skge_hw *hw = skge->hw;
- struct skge_ring *ring = &skge->tx_ring;
struct skge_element *e;
struct skge_tx_desc *td;
int i;
u32 control, len;
u64 map;
- skb = skb_padto(skb, ETH_ZLEN);
- if (!skb)
+ if (skb_padto(skb, ETH_ZLEN))
return NETDEV_TX_OK;
- if (!spin_trylock(&skge->tx_lock)) {
- /* Collision - tell upper layer to requeue */
- return NETDEV_TX_LOCKED;
- }
-
- if (unlikely(skge_avail(&skge->tx_ring) < skb_shinfo(skb)->nr_frags + 1)) {
- if (!netif_queue_stopped(dev)) {
- netif_stop_queue(dev);
-
- printk(KERN_WARNING PFX "%s: ring full when queue awake!\n",
- dev->name);
- }
- spin_unlock(&skge->tx_lock);
+ if (unlikely(skge_avail(&skge->tx_ring) < skb_shinfo(skb)->nr_frags + 1))
return NETDEV_TX_BUSY;
- }
- e = ring->to_use;
+ e = skge->tx_ring.to_use;
td = e->desc;
+ BUG_ON(td->control & BMU_OWN);
e->skb = skb;
len = skb_headlen(skb);
map = pci_map_single(hw->pdev, skb->data, len, PCI_DMA_TODEVICE);
td->dma_lo = map;
td->dma_hi = map >> 32;
- if (skb->ip_summed == CHECKSUM_HW) {
+ if (skb->ip_summed == CHECKSUM_PARTIAL) {
int offset = skb->h.raw - skb->data;
/* This seems backwards, but it is what the sk98lin
frag->size, PCI_DMA_TODEVICE);
e = e->next;
- e->skb = NULL;
+ e->skb = skb;
tf = e->desc;
+ BUG_ON(tf->control & BMU_OWN);
+
tf->dma_lo = map;
tf->dma_hi = (u64) map >> 32;
pci_unmap_addr_set(e, mapaddr, map);
skge_write8(hw, Q_ADDR(txqaddr[skge->port], Q_CSR), CSR_START);
- if (netif_msg_tx_queued(skge))
+ if (unlikely(netif_msg_tx_queued(skge)))
printk(KERN_DEBUG "%s: tx queued, slot %td, len %d\n",
- dev->name, e - ring->start, skb->len);
+ dev->name, e - skge->tx_ring.start, skb->len);
- ring->to_use = e->next;
+ skge->tx_ring.to_use = e->next;
if (skge_avail(&skge->tx_ring) <= TX_LOW_WATER) {
pr_debug("%s: transmit queue full\n", dev->name);
netif_stop_queue(dev);
}
- mmiowb();
- spin_unlock(&skge->tx_lock);
-
dev->trans_start = jiffies;
return NETDEV_TX_OK;
}
-static void skge_tx_complete(struct skge_port *skge, struct skge_element *last)
+
+/* Free resources associated with this reing element */
+static void skge_tx_free(struct skge_port *skge, struct skge_element *e,
+ u32 control)
{
struct pci_dev *pdev = skge->hw->pdev;
- struct skge_element *e;
- for (e = skge->tx_ring.to_clean; e != last; e = e->next) {
- struct sk_buff *skb = e->skb;
- int i;
+ BUG_ON(!e->skb);
- e->skb = NULL;
+ /* skb header vs. fragment */
+ if (control & BMU_STF)
pci_unmap_single(pdev, pci_unmap_addr(e, mapaddr),
- skb_headlen(skb), PCI_DMA_TODEVICE);
+ pci_unmap_len(e, maplen),
+ PCI_DMA_TODEVICE);
+ else
+ pci_unmap_page(pdev, pci_unmap_addr(e, mapaddr),
+ pci_unmap_len(e, maplen),
+ PCI_DMA_TODEVICE);
- for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
- e = e->next;
- pci_unmap_page(pdev, pci_unmap_addr(e, mapaddr),
- skb_shinfo(skb)->frags[i].size,
- PCI_DMA_TODEVICE);
- }
+ if (control & BMU_EOF) {
+ if (unlikely(netif_msg_tx_done(skge)))
+ printk(KERN_DEBUG PFX "%s: tx done slot %td\n",
+ skge->netdev->name, e - skge->tx_ring.start);
- dev_kfree_skb(skb);
+ dev_kfree_skb(e->skb);
}
- skge->tx_ring.to_clean = e;
+ e->skb = NULL;
}
-static void skge_tx_clean(struct skge_port *skge)
+/* Free all buffers in transmit ring */
+static void skge_tx_clean(struct net_device *dev)
{
+ struct skge_port *skge = netdev_priv(dev);
+ struct skge_element *e;
- spin_lock_bh(&skge->tx_lock);
- skge_tx_complete(skge, skge->tx_ring.to_use);
- netif_wake_queue(skge->netdev);
- spin_unlock_bh(&skge->tx_lock);
+ netif_tx_lock_bh(dev);
+ for (e = skge->tx_ring.to_clean; e != skge->tx_ring.to_use; e = e->next) {
+ struct skge_tx_desc *td = e->desc;
+ skge_tx_free(skge, e, td->control);
+ td->control = 0;
+ }
+
+ skge->tx_ring.to_clean = e;
+ netif_wake_queue(dev);
+ netif_tx_unlock_bh(dev);
}
static void skge_tx_timeout(struct net_device *dev)
printk(KERN_DEBUG PFX "%s: tx timeout\n", dev->name);
skge_write8(skge->hw, Q_ADDR(txqaddr[skge->port], Q_CSR), CSR_STOP);
- skge_tx_clean(skge);
+ skge_tx_clean(dev);
}
static int skge_change_mtu(struct net_device *dev, int new_mtu)
/* Get receive buffer from descriptor.
* Handles copy of small buffers and reallocation failures
*/
-static inline struct sk_buff *skge_rx_get(struct skge_port *skge,
- struct skge_element *e,
- u32 control, u32 status, u16 csum)
+static struct sk_buff *skge_rx_get(struct net_device *dev,
+ struct skge_element *e,
+ u32 control, u32 status, u16 csum)
{
+ struct skge_port *skge = netdev_priv(dev);
struct sk_buff *skb;
u16 len = control & BMU_BBC;
if (unlikely(netif_msg_rx_status(skge)))
printk(KERN_DEBUG PFX "%s: rx slot %td status 0x%x len %d\n",
- skge->netdev->name, e - skge->rx_ring.start,
+ dev->name, e - skge->rx_ring.start,
status, len);
if (len > skge->rx_buf_size)
goto error;
if (len < RX_COPY_THRESHOLD) {
- skb = alloc_skb(len + 2, GFP_ATOMIC);
+ skb = netdev_alloc_skb(dev, len + 2);
if (!skb)
goto resubmit;
skge_rx_reuse(e, skge->rx_buf_size);
} else {
struct sk_buff *nskb;
- nskb = alloc_skb(skge->rx_buf_size + NET_IP_ALIGN, GFP_ATOMIC);
+ nskb = netdev_alloc_skb(dev, skge->rx_buf_size + NET_IP_ALIGN);
if (!nskb)
goto resubmit;
}
skb_put(skb, len);
- skb->dev = skge->netdev;
if (skge->rx_csum) {
skb->csum = csum;
- skb->ip_summed = CHECKSUM_HW;
+ skb->ip_summed = CHECKSUM_COMPLETE;
}
- skb->protocol = eth_type_trans(skb, skge->netdev);
+ skb->protocol = eth_type_trans(skb, dev);
return skb;
error:
if (netif_msg_rx_err(skge))
printk(KERN_DEBUG PFX "%s: rx err, slot %td control 0x%x status 0x%x\n",
- skge->netdev->name, e - skge->rx_ring.start,
+ dev->name, e - skge->rx_ring.start,
control, status);
if (skge->hw->chip_id == CHIP_ID_GENESIS) {
return NULL;
}
-static void skge_tx_done(struct skge_port *skge)
+/* Free all buffers in Tx ring which are no longer owned by device */
+static void skge_tx_done(struct net_device *dev)
{
+ struct skge_port *skge = netdev_priv(dev);
struct skge_ring *ring = &skge->tx_ring;
- struct skge_element *e, *last;
+ struct skge_element *e;
+
+ skge_write8(skge->hw, Q_ADDR(txqaddr[skge->port], Q_CSR), CSR_IRQ_CL_F);
- spin_lock(&skge->tx_lock);
- last = ring->to_clean;
+ netif_tx_lock(dev);
for (e = ring->to_clean; e != ring->to_use; e = e->next) {
struct skge_tx_desc *td = e->desc;
if (td->control & BMU_OWN)
break;
- if (td->control & BMU_EOF) {
- last = e->next;
- if (unlikely(netif_msg_tx_done(skge)))
- printk(KERN_DEBUG PFX "%s: tx done slot %td\n",
- skge->netdev->name, e - ring->start);
- }
+ skge_tx_free(skge, e, td->control);
}
-
- skge_tx_complete(skge, last);
-
- skge_write8(skge->hw, Q_ADDR(txqaddr[skge->port], Q_CSR), CSR_IRQ_CL_F);
+ skge->tx_ring.to_clean = e;
if (skge_avail(&skge->tx_ring) > TX_LOW_WATER)
- netif_wake_queue(skge->netdev);
+ netif_wake_queue(dev);
- spin_unlock(&skge->tx_lock);
+ netif_tx_unlock(dev);
}
static int skge_poll(struct net_device *dev, int *budget)
int to_do = min(dev->quota, *budget);
int work_done = 0;
- skge_tx_done(skge);
+ skge_tx_done(dev);
+
+ skge_write8(hw, Q_ADDR(rxqaddr[skge->port], Q_CSR), CSR_IRQ_CL_F);
for (e = ring->to_clean; prefetch(e->next), work_done < to_do; e = e->next) {
struct skge_rx_desc *rd = e->desc;
if (control & BMU_OWN)
break;
- skb = skge_rx_get(skge, e, control, rd->status, rd->csum2);
+ skb = skge_rx_get(dev, e, control, rd->status, rd->csum2);
if (likely(skb)) {
dev->last_rx = jiffies;
netif_receive_skb(skb);
if (work_done >= to_do)
return 1; /* not done */
- netif_rx_complete(dev);
- mmiowb();
-
- hw->intr_mask |= skge->port == 0 ? (IS_R1_F|IS_XA1_F) : (IS_R2_F|IS_XA2_F);
+ spin_lock_irq(&hw->hw_lock);
+ __netif_rx_complete(dev);
+ hw->intr_mask |= irqmask[skge->port];
skge_write32(hw, B0_IMSK, hw->intr_mask);
+ skge_read32(hw, B0_IMSK);
+ spin_unlock_irq(&hw->hw_lock);
return 0;
}
}
mutex_unlock(&hw->phy_mutex);
+ spin_lock_irq(&hw->hw_lock);
hw->intr_mask |= IS_EXT_REG;
skge_write32(hw, B0_IMSK, hw->intr_mask);
+ skge_read32(hw, B0_IMSK);
+ spin_unlock_irq(&hw->hw_lock);
}
static irqreturn_t skge_intr(int irq, void *dev_id, struct pt_regs *regs)
{
struct skge_hw *hw = dev_id;
u32 status;
+ int handled = 0;
+ spin_lock(&hw->hw_lock);
/* Reading this register masks IRQ */
status = skge_read32(hw, B0_SP_ISRC);
- if (status == 0)
- return IRQ_NONE;
+ if (status == 0 || status == ~0)
+ goto out;
+ handled = 1;
+ status &= hw->intr_mask;
if (status & IS_EXT_REG) {
hw->intr_mask &= ~IS_EXT_REG;
schedule_work(&hw->phy_work);
}
- if (status & (IS_R1_F|IS_XA1_F)) {
- skge_write8(hw, Q_ADDR(Q_R1, Q_CSR), CSR_IRQ_CL_F);
- hw->intr_mask &= ~(IS_R1_F|IS_XA1_F);
+ if (status & (IS_XA1_F|IS_R1_F)) {
+ hw->intr_mask &= ~(IS_XA1_F|IS_R1_F);
netif_rx_schedule(hw->dev[0]);
}
- if (status & (IS_R2_F|IS_XA2_F)) {
- skge_write8(hw, Q_ADDR(Q_R2, Q_CSR), CSR_IRQ_CL_F);
- hw->intr_mask &= ~(IS_R2_F|IS_XA2_F);
- netif_rx_schedule(hw->dev[1]);
- }
-
- if (likely((status & hw->intr_mask) == 0))
- return IRQ_HANDLED;
+ if (status & IS_PA_TO_TX1)
+ skge_write16(hw, B3_PA_CTRL, PA_CLR_TO_TX1);
if (status & IS_PA_TO_RX1) {
struct skge_port *skge = netdev_priv(hw->dev[0]);
+
++skge->net_stats.rx_over_errors;
skge_write16(hw, B3_PA_CTRL, PA_CLR_TO_RX1);
}
- if (status & IS_PA_TO_RX2) {
- struct skge_port *skge = netdev_priv(hw->dev[1]);
- ++skge->net_stats.rx_over_errors;
- skge_write16(hw, B3_PA_CTRL, PA_CLR_TO_RX2);
- }
-
- if (status & IS_PA_TO_TX1)
- skge_write16(hw, B3_PA_CTRL, PA_CLR_TO_TX1);
-
- if (status & IS_PA_TO_TX2)
- skge_write16(hw, B3_PA_CTRL, PA_CLR_TO_TX2);
if (status & IS_MAC1)
skge_mac_intr(hw, 0);
- if (status & IS_MAC2)
- skge_mac_intr(hw, 1);
+ if (hw->dev[1]) {
+ if (status & (IS_XA2_F|IS_R2_F)) {
+ hw->intr_mask &= ~(IS_XA2_F|IS_R2_F);
+ netif_rx_schedule(hw->dev[1]);
+ }
+
+ if (status & IS_PA_TO_RX2) {
+ struct skge_port *skge = netdev_priv(hw->dev[1]);
+ ++skge->net_stats.rx_over_errors;
+ skge_write16(hw, B3_PA_CTRL, PA_CLR_TO_RX2);
+ }
+
+ if (status & IS_PA_TO_TX2)
+ skge_write16(hw, B3_PA_CTRL, PA_CLR_TO_TX2);
+
+ if (status & IS_MAC2)
+ skge_mac_intr(hw, 1);
+ }
if (status & IS_HW_ERR)
skge_error_irq(hw);
skge_write32(hw, B0_IMSK, hw->intr_mask);
+ skge_read32(hw, B0_IMSK);
+out:
+ spin_unlock(&hw->hw_lock);
- return IRQ_HANDLED;
+ return IRQ_RETVAL(handled);
}
#ifdef CONFIG_NET_POLL_CONTROLLER
dev->poll_controller = skge_netpoll;
#endif
dev->irq = hw->pdev->irq;
- dev->features = NETIF_F_LLTX;
+
if (highmem)
dev->features |= NETIF_F_HIGHDMA;
skge->port = port;
- spin_lock_init(&skge->tx_lock);
-
if (hw->chip_id != CHIP_ID_GENESIS) {
dev->features |= NETIF_F_IP_CSUM | NETIF_F_SG;
skge->rx_csum = 1;
hw->pdev = pdev;
mutex_init(&hw->phy_mutex);
INIT_WORK(&hw->phy_work, skge_extirq, hw);
+ spin_lock_init(&hw->hw_lock);
hw->regs = ioremap_nocache(pci_resource_start(pdev, 0), 0x4000);
if (!hw->regs) {
goto err_out_free_hw;
}
- err = request_irq(pdev->irq, skge_intr, SA_SHIRQ, DRV_NAME, hw);
- if (err) {
- printk(KERN_ERR PFX "%s: cannot assign irq %d\n",
- pci_name(pdev), pdev->irq);
- goto err_out_iounmap;
- }
- pci_set_drvdata(pdev, hw);
-
err = skge_reset(hw);
if (err)
- goto err_out_free_irq;
+ goto err_out_iounmap;
- printk(KERN_INFO PFX DRV_VERSION " addr 0x%lx irq %d chip %s rev %d\n",
- pci_resource_start(pdev, 0), pdev->irq,
+ printk(KERN_INFO PFX DRV_VERSION " addr 0x%llx irq %d chip %s rev %d\n",
+ (unsigned long long)pci_resource_start(pdev, 0), pdev->irq,
skge_board_name(hw), hw->chip_rev);
- if ((dev = skge_devinit(hw, 0, using_dac)) == NULL)
+ dev = skge_devinit(hw, 0, using_dac);
+ if (!dev)
goto err_out_led_off;
+ if (!is_valid_ether_addr(dev->dev_addr)) {
+ printk(KERN_ERR PFX "%s: bad (zero?) ethernet address in rom\n",
+ pci_name(pdev));
+ err = -EIO;
+ goto err_out_free_netdev;
+ }
+
err = register_netdev(dev);
if (err) {
printk(KERN_ERR PFX "%s: cannot register net device\n",
goto err_out_free_netdev;
}
+ err = request_irq(pdev->irq, skge_intr, IRQF_SHARED, dev->name, hw);
+ if (err) {
+ printk(KERN_ERR PFX "%s: cannot assign irq %d\n",
+ dev->name, pdev->irq);
+ goto err_out_unregister;
+ }
skge_show_addr(dev);
if (hw->ports > 1 && (dev1 = skge_devinit(hw, 1, using_dac))) {
free_netdev(dev1);
}
}
+ pci_set_drvdata(pdev, hw);
return 0;
+err_out_unregister:
+ unregister_netdev(dev);
err_out_free_netdev:
free_netdev(dev);
err_out_led_off:
skge_write16(hw, B0_LED, LED_STAT_OFF);
-err_out_free_irq:
- free_irq(pdev->irq, hw);
err_out_iounmap:
iounmap(hw->regs);
err_out_free_hw:
dev0 = hw->dev[0];
unregister_netdev(dev0);
+ spin_lock_irq(&hw->hw_lock);
+ hw->intr_mask = 0;
skge_write32(hw, B0_IMSK, 0);
+ skge_read32(hw, B0_IMSK);
+ spin_unlock_irq(&hw->hw_lock);
+
skge_write16(hw, B0_LED, LED_STAT_OFF);
skge_write8(hw, B0_CTST, CS_RST_SET);
struct skge_hw *hw = pci_get_drvdata(pdev);
int i, wol = 0;
- for (i = 0; i < 2; i++) {
+ pci_save_state(pdev);
+ for (i = 0; i < hw->ports; i++) {
struct net_device *dev = hw->dev[i];
- if (dev) {
+ if (netif_running(dev)) {
struct skge_port *skge = netdev_priv(dev);
- if (netif_running(dev)) {
- netif_carrier_off(dev);
- if (skge->wol)
- netif_stop_queue(dev);
- else
- skge_down(dev);
- }
- netif_device_detach(dev);
+
+ netif_carrier_off(dev);
+ if (skge->wol)
+ netif_stop_queue(dev);
+ else
+ skge_down(dev);
wol |= skge->wol;
}
+ netif_device_detach(dev);
}
- pci_save_state(pdev);
+ skge_write32(hw, B0_IMSK, 0);
pci_enable_wake(pdev, pci_choose_state(pdev, state), wol);
- pci_disable_device(pdev);
pci_set_power_state(pdev, pci_choose_state(pdev, state));
return 0;
static int skge_resume(struct pci_dev *pdev)
{
struct skge_hw *hw = pci_get_drvdata(pdev);
- int i;
+ int i, err;
pci_set_power_state(pdev, PCI_D0);
pci_restore_state(pdev);
pci_enable_wake(pdev, PCI_D0, 0);
- skge_reset(hw);
+ err = skge_reset(hw);
+ if (err)
+ goto out;
- for (i = 0; i < 2; i++) {
+ for (i = 0; i < hw->ports; i++) {
struct net_device *dev = hw->dev[i];
- if (dev) {
- netif_device_attach(dev);
- if (netif_running(dev) && skge_up(dev))
+
+ netif_device_attach(dev);
+ if (netif_running(dev)) {
+ err = skge_up(dev);
+
+ if (err) {
+ printk(KERN_ERR PFX "%s: could not up: %d\n",
+ dev->name, err);
dev_close(dev);
+ goto out;
+ }
}
}
- return 0;
+out:
+ return err;
}
#endif
static int __init skge_init_module(void)
{
- return pci_module_init(&skge_driver);
+ return pci_register_driver(&skge_driver);
}
static void __exit skge_cleanup_module(void)
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff