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net: rtl8139: Minor cleanup of rtl_transmit()

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Rename the function to rtl8139_send(), clean up the TX polling, the TX
OK condition at the end, overuse of typecasts, and various line-over-80
problems. No functional change.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Joe Hershberger <joe.hershberger@ni.com>
This commit is contained in:
Marek Vasut 2020-04-12 22:40:45 +02:00 committed by marex
parent c7a3e35d76
commit 67fdbc06be
1 changed files with 31 additions and 33 deletions
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64
drivers/net/rtl8139.c
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@ -201,7 +201,7 @@ static unsigned char rx_ring[RX_BUF_LEN+16] __attribute__((aligned(4)));
static int rtl8139_probe(struct eth_device *dev, bd_t *bis);
static int rtl8139_read_eeprom(unsigned int location, unsigned int addr_len);
static void rtl8139_reset(struct eth_device *dev);
static int rtl_transmit(struct eth_device *dev, void *packet, int length);
static int rtl8139_send(struct eth_device *dev, void *packet, int length);
static int rtl_poll(struct eth_device *dev);
static void rtl_disable(struct eth_device *dev);
static int rtl_bcast_addr(struct eth_device *dev, const u8 *bcast_mac, int join)
@ -246,7 +246,7 @@ int rtl8139_initialize(bd_t *bis)
dev->iobase = (int)bus_to_phys(iobase);
dev->init = rtl8139_probe;
dev->halt = rtl_disable;
dev->send = rtl_transmit;
dev->send = rtl8139_send;
dev->recv = rtl_poll;
dev->mcast = rtl_bcast_addr;
@ -436,29 +436,31 @@ static void rtl8139_reset(struct eth_device *dev)
outw(0, ioaddr + RTL_REG_INTRMASK);
}
static int rtl_transmit(struct eth_device *dev, void *packet, int length)
static int rtl8139_send(struct eth_device *dev, void *packet, int length)
{
unsigned int status;
unsigned long txstatus;
unsigned int len = length;
unsigned long txstatus;
unsigned int status;
int i = 0;
ioaddr = dev->iobase;
memcpy((char *)tx_buffer, (char *)packet, (int)length);
memcpy(tx_buffer, packet, length);
debug_cond(DEBUG_TX, "sending %d bytes\n", len);
/* Note: RTL8139 doesn't auto-pad, send minimum payload (another 4
* bytes are sent automatically for the FCS, totalling to 64 bytes). */
while (len < ETH_ZLEN) {
/*
* Note: RTL8139 doesn't auto-pad, send minimum payload (another 4
* bytes are sent automatically for the FCS, totalling to 64 bytes).
*/
while (len < ETH_ZLEN)
tx_buffer[len++] = '\0';
}
flush_cache((unsigned long)tx_buffer, length);
outl(phys_to_bus((int)tx_buffer), ioaddr + RTL_REG_TXADDR0 + cur_tx*4);
outl(((TX_FIFO_THRESH<<11) & 0x003f0000) | len,
ioaddr + RTL_REG_TXSTATUS0 + cur_tx*4);
outl(phys_to_bus((unsigned long)tx_buffer),
ioaddr + RTL_REG_TXADDR0 + cur_tx * 4);
outl(((TX_FIFO_THRESH << 11) & 0x003f0000) | len,
ioaddr + RTL_REG_TXSTATUS0 + cur_tx * 4);
do {
status = inw(ioaddr + RTL_REG_INTRSTATUS);
@ -468,37 +470,33 @@ static int rtl_transmit(struct eth_device *dev, void *packet, int length)
* RTL_REG_INTRSTATUS_RXFIFOOVER MUST be handled in the
* rtl_poll() function.
*/
outw(status & (RTL_REG_INTRSTATUS_TXOK |
RTL_REG_INTRSTATUS_TXERR |
RTL_REG_INTRSTATUS_PCIERR),
ioaddr + RTL_REG_INTRSTATUS);
if ((status & (RTL_REG_INTRSTATUS_TXOK |
RTL_REG_INTRSTATUS_TXERR |
RTL_REG_INTRSTATUS_PCIERR)) != 0)
status &= RTL_REG_INTRSTATUS_TXOK | RTL_REG_INTRSTATUS_TXERR |
RTL_REG_INTRSTATUS_PCIERR;
outw(status, ioaddr + RTL_REG_INTRSTATUS);
if (status)
break;
udelay(10);
} while (i++ < RTL_TIMEOUT);
txstatus = inl(ioaddr + RTL_REG_TXSTATUS0 + cur_tx*4);
if (status & RTL_REG_INTRSTATUS_TXOK) {
cur_tx = (cur_tx + 1) % NUM_TX_DESC;
txstatus = inl(ioaddr + RTL_REG_TXSTATUS0 + cur_tx * 4);
if (!(status & RTL_REG_INTRSTATUS_TXOK)) {
debug_cond(DEBUG_TX,
"tx done, status %hX txstatus %lX\n",
status, txstatus);
return length;
} else {
debug_cond(DEBUG_TX,
"tx timeout/error (%d usecs), status %hX txstatus %lX\n",
10*i, status, txstatus);
"tx timeout/error (%d usecs), status %hX txstatus %lX\n",
10 * i, status, txstatus);
rtl8139_reset(dev);
return 0;
}
cur_tx = (cur_tx + 1) % NUM_TX_DESC;
debug_cond(DEBUG_TX, "tx done, status %hX txstatus %lX\n",
status, txstatus);
return length;
}
static int rtl_poll(struct eth_device *dev)