diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/eepro100.c | 162 |
1 files changed, 100 insertions, 62 deletions
diff --git a/drivers/net/eepro100.c b/drivers/net/eepro100.c index fb8a68f84c..f474832552 100644 --- a/drivers/net/eepro100.c +++ b/drivers/net/eepro100.c @@ -202,6 +202,7 @@ struct eepro100_priv { struct eepro100_txfd tx_ring[NUM_TX_DESC]; /* RX descriptor ring pointer */ int rx_next; + u16 rx_stat; /* TX descriptor ring pointer */ int tx_next; int tx_threshold; @@ -535,10 +536,8 @@ static void eepro100_get_hwaddr(struct eepro100_priv *priv) } } -static int eepro100_init(struct eth_device *dev, bd_t *bis) +static int eepro100_init_common(struct eepro100_priv *priv) { - struct eepro100_priv *priv = - container_of(dev, struct eepro100_priv, dev); struct eepro100_rxfd *rx_ring = priv->rx_ring; struct eepro100_txfd *tx_ring = priv->tx_ring; struct eepro100_txfd *ias_cmd, *cfg_cmd; @@ -628,10 +627,9 @@ done: return status; } -static int eepro100_send(struct eth_device *dev, void *packet, int length) +static int eepro100_send_common(struct eepro100_priv *priv, + void *packet, int length) { - struct eepro100_priv *priv = - container_of(dev, struct eepro100_priv, dev); struct eepro100_txfd *tx_ring = priv->tx_ring; struct eepro100_txfd *desc; int ret, status = -1; @@ -672,82 +670,82 @@ done: return status; } -static int eepro100_recv(struct eth_device *dev) +static int eepro100_recv_common(struct eepro100_priv *priv, uchar **packetp) { - struct eepro100_priv *priv = - container_of(dev, struct eepro100_priv, dev); struct eepro100_rxfd *rx_ring = priv->rx_ring; struct eepro100_rxfd *desc; - int rx_prev, length = 0; - u16 status, stat; + int length; + u16 status; - stat = INW(priv, SCB_STATUS); - OUTW(priv, stat & SCB_STATUS_RNR, SCB_STATUS); + priv->rx_stat = INW(priv, SCB_STATUS); + OUTW(priv, priv->rx_stat & SCB_STATUS_RNR, SCB_STATUS); - for (;;) { - desc = &rx_ring[priv->rx_next]; - invalidate_dcache_range((unsigned long)desc, - (unsigned long)desc + sizeof(*desc)); - status = le16_to_cpu(desc->status); + desc = &rx_ring[priv->rx_next]; + invalidate_dcache_range((unsigned long)desc, + (unsigned long)desc + sizeof(*desc)); + status = le16_to_cpu(desc->status); + + if (!(status & RFD_STATUS_C)) + return 0; + + /* Valid frame status. */ + if (status & RFD_STATUS_OK) { + /* A valid frame received. */ + length = le32_to_cpu(desc->count) & 0x3fff; + /* Pass the packet up to the protocol layers. */ + *packetp = desc->data; + return length; + } - if (!(status & RFD_STATUS_C)) - break; + /* There was an error. */ + printf("RX error status = 0x%08X\n", status); + return -EINVAL; +} - /* Valid frame status. */ - if ((status & RFD_STATUS_OK)) { - /* A valid frame received. */ - length = le32_to_cpu(desc->count) & 0x3fff; +static void eepro100_free_pkt_common(struct eepro100_priv *priv) +{ + struct eepro100_rxfd *rx_ring = priv->rx_ring; + struct eepro100_rxfd *desc; + int rx_prev; - /* Pass the packet up to the protocol layers. */ - net_process_received_packet((u8 *)desc->data, length); - } else { - /* There was an error. */ - printf("RX error status = 0x%08X\n", status); - } + desc = &rx_ring[priv->rx_next]; - desc->control = cpu_to_le16(RFD_CONTROL_S); - desc->status = 0; - desc->count = cpu_to_le32(PKTSIZE_ALIGN << 16); - flush_dcache_range((unsigned long)desc, - (unsigned long)desc + sizeof(*desc)); + desc->control = cpu_to_le16(RFD_CONTROL_S); + desc->status = 0; + desc->count = cpu_to_le32(PKTSIZE_ALIGN << 16); + flush_dcache_range((unsigned long)desc, + (unsigned long)desc + sizeof(*desc)); - rx_prev = (priv->rx_next + NUM_RX_DESC - 1) % NUM_RX_DESC; - desc = &rx_ring[rx_prev]; - desc->control = 0; - flush_dcache_range((unsigned long)desc, - (unsigned long)desc + sizeof(*desc)); + rx_prev = (priv->rx_next + NUM_RX_DESC - 1) % NUM_RX_DESC; + desc = &rx_ring[rx_prev]; + desc->control = 0; + flush_dcache_range((unsigned long)desc, + (unsigned long)desc + sizeof(*desc)); - /* Update entry information. */ - priv->rx_next = (priv->rx_next + 1) % NUM_RX_DESC; - } + /* Update entry information. */ + priv->rx_next = (priv->rx_next + 1) % NUM_RX_DESC; - if (stat & SCB_STATUS_RNR) { - printf("%s: Receiver is not ready, restart it !\n", priv->name); + if (!(priv->rx_stat & SCB_STATUS_RNR)) + return; - /* Reinitialize Rx ring. */ - init_rx_ring(priv); + printf("%s: Receiver is not ready, restart it !\n", priv->name); - if (!wait_for_eepro100(priv)) { - printf("Error: Can not restart ethernet controller.\n"); - goto done; - } + /* Reinitialize Rx ring. */ + init_rx_ring(priv); - /* RX ring cache was already flushed in init_rx_ring() */ - OUTL(priv, phys_to_bus(priv->devno, - (u32)&rx_ring[priv->rx_next]), - SCB_POINTER); - OUTW(priv, SCB_M | RUC_START, SCB_CMD); + if (!wait_for_eepro100(priv)) { + printf("Error: Can not restart ethernet controller.\n"); + return; } -done: - return length; + /* RX ring cache was already flushed in init_rx_ring() */ + OUTL(priv, phys_to_bus(priv->devno, (u32)&rx_ring[priv->rx_next]), + SCB_POINTER); + OUTW(priv, SCB_M | RUC_START, SCB_CMD); } -static void eepro100_halt(struct eth_device *dev) +static void eepro100_halt_common(struct eepro100_priv *priv) { - struct eepro100_priv *priv = - container_of(dev, struct eepro100_priv, dev); - /* Reset the ethernet controller */ OUTL(priv, I82559_SELECTIVE_RESET, SCB_PORT); udelay(20); @@ -773,6 +771,46 @@ done: return; } +static int eepro100_init(struct eth_device *dev, bd_t *bis) +{ + struct eepro100_priv *priv = + container_of(dev, struct eepro100_priv, dev); + + return eepro100_init_common(priv); +} + +static void eepro100_halt(struct eth_device *dev) +{ + struct eepro100_priv *priv = + container_of(dev, struct eepro100_priv, dev); + + eepro100_halt_common(priv); +} + +static int eepro100_send(struct eth_device *dev, void *packet, int length) +{ + struct eepro100_priv *priv = + container_of(dev, struct eepro100_priv, dev); + + return eepro100_send_common(priv, packet, length); +} + +static int eepro100_recv(struct eth_device *dev) +{ + struct eepro100_priv *priv = + container_of(dev, struct eepro100_priv, dev); + uchar *packet; + int ret; + + ret = eepro100_recv_common(priv, &packet); + if (ret > 0) + net_process_received_packet(packet, ret); + if (ret) + eepro100_free_pkt_common(priv); + + return ret; +} + int eepro100_initialize(bd_t *bis) { struct eepro100_priv *priv; |