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ethernet: eth_liteeth: Use LiteX HAL

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Use LiteX HAL functions instead of `sys_read*` or `sys_write*`
functions.
They use them inside, but choose which one to use according to
configured CSR data width.

Signed-off-by: Michal Sieron <msieron@internships.antmicro.com>
This commit is contained in:
Michal Sieron 2022-04-08 14:52:24 +02:00 • committed by Carles Cufí
commit 0c738b7f79
1 changed files with 14 additions and 14 deletions
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28
drivers/ethernet/eth_liteeth.c
View file

@ -93,12 +93,12 @@ static int eth_tx(const struct device *dev, struct net_pkt *pkt)
len = net_pkt_get_len(pkt);
net_pkt_read(pkt, context->tx_buf[context->txslot], len);
sys_write8(context->txslot, LITEETH_TX_SLOT);
sys_write8(len >> 8, LITEETH_TX_LENGTH);
sys_write8(len & 0xFF, LITEETH_TX_LENGTH + 4);
litex_write8(context->txslot, LITEETH_TX_SLOT);
litex_write8(len >> 8, LITEETH_TX_LENGTH);
litex_write8(len & 0xFF, LITEETH_TX_LENGTH + 4);
/* wait for the device to be ready to transmit */
while (sys_read8(LITEETH_TX_READY) == 0) {
while (litex_read8(LITEETH_TX_READY) == 0) {
if (attempts++ == MAX_TX_FAILURE) {
goto error;
}
@ -106,7 +106,7 @@ static int eth_tx(const struct device *dev, struct net_pkt *pkt)
}
/* start transmitting */
sys_write8(1, LITEETH_TX_START);
litex_write8(1, LITEETH_TX_START);
/* change slot */
context->txslot = (context->txslot + 1) % 2;
@ -134,11 +134,11 @@ static void eth_rx(const struct device *port)
/* get frame's length */
for (int i = 0; i < 4; i++) {
len <<= 8;
len |= sys_read8(LITEETH_RX_LENGTH + i * 0x4);
len |= litex_read8(LITEETH_RX_LENGTH + i * 0x4);
}
/* which slot is the frame in */
context->rxslot = sys_read8(LITEETH_RX_SLOT);
context->rxslot = litex_read8(LITEETH_RX_SLOT);
/* obtain rx buffer */
pkt = net_pkt_rx_alloc_with_buffer(context->iface, len, AF_UNSPEC, 0,
@ -169,19 +169,19 @@ out:
static void eth_irq_handler(const struct device *port)
{
/* check sram reader events (tx) */
if (sys_read8(LITEETH_TX_EV_PENDING) & LITEETH_EV_TX) {
if (litex_read8(LITEETH_TX_EV_PENDING) & LITEETH_EV_TX) {
/* TX event is not enabled nor used by this driver; ack just
* in case if some rogue TX event appeared
*/
sys_write8(LITEETH_EV_TX, LITEETH_TX_EV_PENDING);
litex_write8(LITEETH_EV_TX, LITEETH_TX_EV_PENDING);
}
/* check sram writer events (rx) */
if (sys_read8(LITEETH_RX_EV_PENDING) & LITEETH_EV_RX) {
if (litex_read8(LITEETH_RX_EV_PENDING) & LITEETH_EV_RX) {
eth_rx(port);
/* ack writer irq */
sys_write8(LITEETH_EV_RX, LITEETH_RX_EV_PENDING);
litex_write8(LITEETH_EV_RX, LITEETH_RX_EV_PENDING);
}
}
@ -226,8 +226,8 @@ static void eth_iface_init(struct net_if *iface)
}
/* clear pending events */
sys_write8(LITEETH_EV_TX, LITEETH_TX_EV_PENDING);
sys_write8(LITEETH_EV_RX, LITEETH_RX_EV_PENDING);
litex_write8(LITEETH_EV_TX, LITEETH_TX_EV_PENDING);
litex_write8(LITEETH_EV_RX, LITEETH_RX_EV_PENDING);
/* setup tx slots */
context->txslot = 0;
@ -264,7 +264,7 @@ static void eth_irq_config(void)
IRQ_CONNECT(LITEETH_IRQ, LITEETH_IRQ_PRIORITY, eth_irq_handler,
DEVICE_DT_INST_GET(0), 0);
irq_enable(LITEETH_IRQ);
sys_write8(1, LITEETH_RX_EV_ENABLE);
litex_write8(1, LITEETH_RX_EV_ENABLE);
}
#endif /* CONFIG_ETH_LITEETH_0 */