static int macb_send(struct eth_device *netdev, void *packet, int length)
{
struct macb_device *macb = to_macb(netdev);
unsigned long paddr, ctrl;
unsigned int tx_head = macb->tx_head;
int i;
paddr = dma_map_single(packet, length, DMA_TO_DEVICE);
ctrl = length & TXBUF_FRMLEN_MASK;
ctrl |= TXBUF_FRAME_END;
if (tx_head == (MACB_TX_RING_SIZE - 1)) {
ctrl |= TXBUF_WRAP;
macb->tx_head = 0;
} else {
macb->tx_head++;
}
macb->tx_ring[tx_head].ctrl = ctrl;
macb->tx_ring[tx_head].addr = paddr;
barrier();
macb_flush_ring_desc(macb, TX);
/* Do we need check paddr and length is dcache line aligned? */
flush_dcache_range(paddr, paddr + length);
macb_writel(macb, NCR, MACB_BIT(TE) | MACB_BIT(RE) | MACB_BIT(TSTART));
/*
* I guess this is necessary because the networking core may
* re-use the transmit buffer as soon as we return...
*/
for (i = 0; i <= MACB_TX_TIMEOUT; i++) {
barrier();
macb_invalidate_ring_desc(macb, TX);
ctrl = macb->tx_ring[tx_head].ctrl;
if (ctrl & TXBUF_USED)
break;
udelay(1);
}
dma_unmap_single(packet, length, paddr);
if (i <= MACB_TX_TIMEOUT) {
if (ctrl & TXBUF_UNDERRUN)
printf("%s: TX underrun\n", netdev->name);
if (ctrl & TXBUF_EXHAUSTED)
printf("%s: TX buffers exhausted in mid frame\n",
netdev->name);
} else {
printf("%s: TX timeout\n", netdev->name);
}
/* No one cares anyway */
return 0;
}
static void reclaim_rx_buffers(struct macb_device *macb,
unsigned int new_tail)
{
unsigned int i;
i = macb->rx_tail;
macb_invalidate_ring_desc(macb, RX);
while (i > new_tail) {
macb->rx_ring[i].addr &= ~RXADDR_USED;
i++;
if (i > MACB_RX_RING_SIZE)
i = 0;
}
while (i < new_tail) {
macb->rx_ring[i].addr &= ~RXADDR_USED;
i++;
}
barrier();
macb_flush_ring_desc(macb, RX);
macb->rx_tail = new_tail;
}
static int _macb_init(struct macb_device *macb, const char *name)
#endif
{
#ifdef CONFIG_DM_ETH
struct macb_device *macb = dev_get_priv(dev);
#endif
unsigned long paddr;
int i;
/*
* macb_halt should have been called at some point before now,
* so we'll assume the controller is idle.
*/
/* initialize DMA descriptors */
paddr = macb->rx_buffer_dma;
for (i = 0; i < MACB_RX_RING_SIZE; i++) {
if (i == (MACB_RX_RING_SIZE - 1))
paddr |= RXADDR_WRAP;
macb->rx_ring[i].addr = paddr;
macb->rx_ring[i].ctrl = 0;
paddr += 128;
}
macb_flush_ring_desc(macb, RX);
macb_flush_rx_buffer(macb);
for (i = 0; i < MACB_TX_RING_SIZE; i++) {
macb->tx_ring[i].addr = 0;
if (i == (MACB_TX_RING_SIZE - 1))
macb->tx_ring[i].ctrl = TXBUF_USED | TXBUF_WRAP;
else
macb->tx_ring[i].ctrl = TXBUF_USED;
}
macb_flush_ring_desc(macb, TX);
macb->rx_tail = 0;
macb->tx_head = 0;
macb->tx_tail = 0;
macb->next_rx_tail = 0;
macb_writel(macb, RBQP, macb->rx_ring_dma);
macb_writel(macb, TBQP, macb->tx_ring_dma);
if (macb_is_gem(macb)) {
/* Check the multi queue and initialize the queue for tx */
gmac_init_multi_queues(macb);
/*
* When the GMAC IP with GE feature, this bit is used to
* select interface between RGMII and GMII.
* When the GMAC IP without GE feature, this bit is used
* to select interface between RMII and MII.
*/
#ifdef CONFIG_DM_ETH
if ((macb->phy_interface == PHY_INTERFACE_MODE_RMII) ||
(macb->phy_interface == PHY_INTERFACE_MODE_RGMII))
gem_writel(macb, UR, GEM_BIT(RGMII));
else
gem_writel(macb, UR, 0);
#else
#if defined(CONFIG_RGMII) || defined(CONFIG_RMII)
gem_writel(macb, UR, GEM_BIT(RGMII));
#else
gem_writel(macb, UR, 0);
#endif
#endif
} else {
/* choose RMII or MII mode. This depends on the board */
#ifdef CONFIG_DM_ETH
#ifdef CONFIG_AT91FAMILY
if (macb->phy_interface == PHY_INTERFACE_MODE_RMII) {
macb_writel(macb, USRIO,
MACB_BIT(RMII) | MACB_BIT(CLKEN));
} else {
macb_writel(macb, USRIO, MACB_BIT(CLKEN));
}
#else
if (macb->phy_interface == PHY_INTERFACE_MODE_RMII)
macb_writel(macb, USRIO, 0);
else
macb_writel(macb, USRIO, MACB_BIT(MII));
#endif
#else
#ifdef CONFIG_RMII
#ifdef CONFIG_AT91FAMILY
macb_writel(macb, USRIO, MACB_BIT(RMII) | MACB_BIT(CLKEN));
#else
macb_writel(macb, USRIO, 0);
#endif
#else
#ifdef CONFIG_AT91FAMILY
macb_writel(macb, USRIO, MACB_BIT(CLKEN));
#else
macb_writel(macb, USRIO, MACB_BIT(MII));
#endif
#endif /* CONFIG_RMII */
#endif
}
#ifdef CONFIG_DM_ETH
if (!macb_phy_init(dev, name))
#else
if (!macb_phy_init(macb, name))
#endif
return -1;
/* Enable TX and RX */
macb_writel(macb, NCR, MACB_BIT(TE) | MACB_BIT(RE));
return 0;
}
static int macb_init(struct eth_device *netdev, bd_t *bd)
{
struct macb_device *macb = to_macb(netdev);
unsigned long paddr;
int i;
/*
* macb_halt should have been called at some point before now,
* so we'll assume the controller is idle.
*/
/* initialize DMA descriptors */
paddr = macb->rx_buffer_dma;
for (i = 0; i < MACB_RX_RING_SIZE; i++) {
if (i == (MACB_RX_RING_SIZE - 1))
paddr |= RXADDR_WRAP;
macb->rx_ring[i].addr = paddr;
macb->rx_ring[i].ctrl = 0;
paddr += 128;
}
macb_flush_ring_desc(macb, RX);
macb_flush_rx_buffer(macb);
for (i = 0; i < MACB_TX_RING_SIZE; i++) {
macb->tx_ring[i].addr = 0;
if (i == (MACB_TX_RING_SIZE - 1))
macb->tx_ring[i].ctrl = TXBUF_USED | TXBUF_WRAP;
else
macb->tx_ring[i].ctrl = TXBUF_USED;
}
macb_flush_ring_desc(macb, TX);
macb->rx_tail = 0;
macb->tx_head = 0;
macb->tx_tail = 0;
macb_writel(macb, RBQP, macb->rx_ring_dma);
macb_writel(macb, TBQP, macb->tx_ring_dma);
if (macb_is_gem(macb)) {
#ifdef CONFIG_RGMII
gem_writel(macb, UR, GEM_BIT(RGMII));
#else
gem_writel(macb, UR, 0);
#endif
} else {
/* choose RMII or MII mode. This depends on the board */
#ifdef CONFIG_RMII
#ifdef CONFIG_AT91FAMILY
macb_writel(macb, USRIO, MACB_BIT(RMII) | MACB_BIT(CLKEN));
#else
macb_writel(macb, USRIO, 0);
#endif
#else
#ifdef CONFIG_AT91FAMILY
macb_writel(macb, USRIO, MACB_BIT(CLKEN));
#else
macb_writel(macb, USRIO, MACB_BIT(MII));
#endif
#endif /* CONFIG_RMII */
}
if (!macb_phy_init(macb))
return -1;
/* Enable TX and RX */
macb_writel(macb, NCR, MACB_BIT(TE) | MACB_BIT(RE));
return 0;
}
