diff options
Diffstat (limited to 'drivers/net/tsec.c')
| -rw-r--r-- | drivers/net/tsec.c | 208 |
1 files changed, 103 insertions, 105 deletions
diff --git a/drivers/net/tsec.c b/drivers/net/tsec.c index 9a3b1a9..ea2363e 100644 --- a/drivers/net/tsec.c +++ b/drivers/net/tsec.c @@ -21,8 +21,6 @@ DECLARE_GLOBAL_DATA_PTR; -static int tsec_send(struct eth_device *dev, void *packet, int length); - /* Default initializations for TSEC controllers. */ static struct tsec_info_struct tsec_info[] = { @@ -221,6 +219,109 @@ static void adjust_link(struct tsec_private *priv, struct phy_device *phydev) (phydev->port == PORT_FIBRE) ? ", fiber mode" : ""); } +/* + * This returns the status bits of the device. The return value + * is never checked, and this is what the 8260 driver did, so we + * do the same. Presumably, this would be zero if there were no + * errors + */ +static int tsec_send(struct eth_device *dev, void *packet, int length) +{ + struct tsec_private *priv = (struct tsec_private *)dev->priv; + struct tsec __iomem *regs = priv->regs; + uint16_t status; + int result = 0; + int i; + + /* Find an empty buffer descriptor */ + for (i = 0; + in_be16(&priv->txbd[priv->tx_idx].status) & TXBD_READY; + i++) { + if (i >= TOUT_LOOP) { + debug("%s: tsec: tx buffers full\n", dev->name); + return result; + } + } + + out_be32(&priv->txbd[priv->tx_idx].bufptr, (u32)packet); + out_be16(&priv->txbd[priv->tx_idx].length, length); + status = in_be16(&priv->txbd[priv->tx_idx].status); + out_be16(&priv->txbd[priv->tx_idx].status, status | + (TXBD_READY | TXBD_LAST | TXBD_CRC | TXBD_INTERRUPT)); + + /* Tell the DMA to go */ + out_be32(®s->tstat, TSTAT_CLEAR_THALT); + + /* Wait for buffer to be transmitted */ + for (i = 0; + in_be16(&priv->txbd[priv->tx_idx].status) & TXBD_READY; + i++) { + if (i >= TOUT_LOOP) { + debug("%s: tsec: tx error\n", dev->name); + return result; + } + } + + priv->tx_idx = (priv->tx_idx + 1) % TX_BUF_CNT; + result = in_be16(&priv->txbd[priv->tx_idx].status) & TXBD_STATS; + + return result; +} + +static int tsec_recv(struct eth_device *dev) +{ + struct tsec_private *priv = (struct tsec_private *)dev->priv; + struct tsec __iomem *regs = priv->regs; + + while (!(in_be16(&priv->rxbd[priv->rx_idx].status) & RXBD_EMPTY)) { + int length = in_be16(&priv->rxbd[priv->rx_idx].length); + uint16_t status = in_be16(&priv->rxbd[priv->rx_idx].status); + uchar *packet = net_rx_packets[priv->rx_idx]; + + /* Send the packet up if there were no errors */ + if (!(status & RXBD_STATS)) + net_process_received_packet(packet, length - 4); + else + printf("Got error %x\n", (status & RXBD_STATS)); + + out_be16(&priv->rxbd[priv->rx_idx].length, 0); + + status = RXBD_EMPTY; + /* Set the wrap bit if this is the last element in the list */ + if ((priv->rx_idx + 1) == PKTBUFSRX) + status |= RXBD_WRAP; + out_be16(&priv->rxbd[priv->rx_idx].status, status); + + priv->rx_idx = (priv->rx_idx + 1) % PKTBUFSRX; + } + + if (in_be32(®s->ievent) & IEVENT_BSY) { + out_be32(®s->ievent, IEVENT_BSY); + out_be32(®s->rstat, RSTAT_CLEAR_RHALT); + } + + return -1; +} + +/* Stop the interface */ +static void tsec_halt(struct eth_device *dev) +{ + struct tsec_private *priv = (struct tsec_private *)dev->priv; + struct tsec __iomem *regs = priv->regs; + + clrbits_be32(®s->dmactrl, DMACTRL_GRS | DMACTRL_GTS); + setbits_be32(®s->dmactrl, DMACTRL_GRS | DMACTRL_GTS); + + while ((in_be32(®s->ievent) & (IEVENT_GRSC | IEVENT_GTSC)) + != (IEVENT_GRSC | IEVENT_GTSC)) + ; + + clrbits_be32(®s->maccfg1, MACCFG1_TX_EN | MACCFG1_RX_EN); + + /* Shut down the PHY, as needed */ + phy_shutdown(priv->phydev); +} + #ifdef CONFIG_SYS_FSL_ERRATUM_NMG_ETSEC129 /* * When MACCFG1[Rx_EN] is enabled during system boot as part @@ -363,109 +464,6 @@ static void startup_tsec(struct eth_device *dev) } /* - * This returns the status bits of the device. The return value - * is never checked, and this is what the 8260 driver did, so we - * do the same. Presumably, this would be zero if there were no - * errors - */ -static int tsec_send(struct eth_device *dev, void *packet, int length) -{ - struct tsec_private *priv = (struct tsec_private *)dev->priv; - struct tsec __iomem *regs = priv->regs; - uint16_t status; - int result = 0; - int i; - - /* Find an empty buffer descriptor */ - for (i = 0; - in_be16(&priv->txbd[priv->tx_idx].status) & TXBD_READY; - i++) { - if (i >= TOUT_LOOP) { - debug("%s: tsec: tx buffers full\n", dev->name); - return result; - } - } - - out_be32(&priv->txbd[priv->tx_idx].bufptr, (u32)packet); - out_be16(&priv->txbd[priv->tx_idx].length, length); - status = in_be16(&priv->txbd[priv->tx_idx].status); - out_be16(&priv->txbd[priv->tx_idx].status, status | - (TXBD_READY | TXBD_LAST | TXBD_CRC | TXBD_INTERRUPT)); - - /* Tell the DMA to go */ - out_be32(®s->tstat, TSTAT_CLEAR_THALT); - - /* Wait for buffer to be transmitted */ - for (i = 0; - in_be16(&priv->txbd[priv->tx_idx].status) & TXBD_READY; - i++) { - if (i >= TOUT_LOOP) { - debug("%s: tsec: tx error\n", dev->name); - return result; - } - } - - priv->tx_idx = (priv->tx_idx + 1) % TX_BUF_CNT; - result = in_be16(&priv->txbd[priv->tx_idx].status) & TXBD_STATS; - - return result; -} - -static int tsec_recv(struct eth_device *dev) -{ - struct tsec_private *priv = (struct tsec_private *)dev->priv; - struct tsec __iomem *regs = priv->regs; - - while (!(in_be16(&priv->rxbd[priv->rx_idx].status) & RXBD_EMPTY)) { - int length = in_be16(&priv->rxbd[priv->rx_idx].length); - uint16_t status = in_be16(&priv->rxbd[priv->rx_idx].status); - uchar *packet = net_rx_packets[priv->rx_idx]; - - /* Send the packet up if there were no errors */ - if (!(status & RXBD_STATS)) - net_process_received_packet(packet, length - 4); - else - printf("Got error %x\n", (status & RXBD_STATS)); - - out_be16(&priv->rxbd[priv->rx_idx].length, 0); - - status = RXBD_EMPTY; - /* Set the wrap bit if this is the last element in the list */ - if ((priv->rx_idx + 1) == PKTBUFSRX) - status |= RXBD_WRAP; - out_be16(&priv->rxbd[priv->rx_idx].status, status); - - priv->rx_idx = (priv->rx_idx + 1) % PKTBUFSRX; - } - - if (in_be32(®s->ievent) & IEVENT_BSY) { - out_be32(®s->ievent, IEVENT_BSY); - out_be32(®s->rstat, RSTAT_CLEAR_RHALT); - } - - return -1; -} - -/* Stop the interface */ -static void tsec_halt(struct eth_device *dev) -{ - struct tsec_private *priv = (struct tsec_private *)dev->priv; - struct tsec __iomem *regs = priv->regs; - - clrbits_be32(®s->dmactrl, DMACTRL_GRS | DMACTRL_GTS); - setbits_be32(®s->dmactrl, DMACTRL_GRS | DMACTRL_GTS); - - while ((in_be32(®s->ievent) & (IEVENT_GRSC | IEVENT_GTSC)) - != (IEVENT_GRSC | IEVENT_GTSC)) - ; - - clrbits_be32(®s->maccfg1, MACCFG1_TX_EN | MACCFG1_RX_EN); - - /* Shut down the PHY, as needed */ - phy_shutdown(priv->phydev); -} - -/* * Initializes data structures and registers for the controller, * and brings the interface up. Returns the link status, meaning * that it returns success if the link is up, failure otherwise. |