+// SPDX-License-Identifier: GPL-2.0
/*
* rtl8139.c : U-Boot driver for the RealTek RTL8139
*
*/
/* rtl8139.c - etherboot driver for the Realtek 8139 chipset
-
- ported from the linux driver written by Donald Becker
- by Rainer Bawidamann (Rainer.Bawidamann@informatik.uni-ulm.de) 1999
-
- This software may be used and distributed according to the terms
- of the GNU Public License, incorporated herein by reference.
-
- changes to the original driver:
- - removed support for interrupts, switching to polling mode (yuck!)
- - removed support for the 8129 chip (external MII)
-
-*/
+ *
+ * ported from the linux driver written by Donald Becker
+ * by Rainer Bawidamann (Rainer.Bawidamann@informatik.uni-ulm.de) 1999
+ *
+ * changes to the original driver:
+ * - removed support for interrupts, switching to polling mode (yuck!)
+ * - removed support for the 8129 chip (external MII)
+ */
/*********************************************************************/
/* Revision History */
/*********************************************************************/
/*
- 28 Dec 2002 ken_yap@users.sourceforge.net (Ken Yap)
- Put in virt_to_bus calls to allow Etherboot relocation.
-
- 06 Apr 2001 ken_yap@users.sourceforge.net (Ken Yap)
- Following email from Hyun-Joon Cha, added a disable routine, otherwise
- NIC remains live and can crash the kernel later.
-
- 4 Feb 2000 espenlaub@informatik.uni-ulm.de (Klaus Espenlaub)
- Shuffled things around, removed the leftovers from the 8129 support
- that was in the Linux driver and added a bit more 8139 definitions.
- Moved the 8K receive buffer to a fixed, available address outside the
- 0x98000-0x9ffff range. This is a bit of a hack, but currently the only
- way to make room for the Etherboot features that need substantial amounts
- of code like the ANSI console support. Currently the buffer is just below
- 0x10000, so this even conforms to the tagged boot image specification,
- which reserves the ranges 0x00000-0x10000 and 0x98000-0xA0000. My
- interpretation of this "reserved" is that Etherboot may do whatever it
- likes, as long as its environment is kept intact (like the BIOS
- variables). Hopefully fixed rtl_poll() once and for all. The symptoms
- were that if Etherboot was left at the boot menu for several minutes, the
- first eth_poll failed. Seems like I am the only person who does this.
- First of all I fixed the debugging code and then set out for a long bug
- hunting session. It took me about a week full time work - poking around
- various places in the driver, reading Don Becker's and Jeff Garzik's Linux
- driver and even the FreeBSD driver (what a piece of crap!) - and
- eventually spotted the nasty thing: the transmit routine was acknowledging
- each and every interrupt pending, including the RxOverrun and RxFIFIOver
- interrupts. This confused the RTL8139 thoroughly. It destroyed the
- Rx ring contents by dumping the 2K FIFO contents right where we wanted to
- get the next packet. Oh well, what fun.
-
- 18 Jan 2000 mdc@thinguin.org (Marty Connor)
- Drastically simplified error handling. Basically, if any error
- in transmission or reception occurs, the card is reset.
- Also, pointed all transmit descriptors to the same buffer to
- save buffer space. This should decrease driver size and avoid
- corruption because of exceeding 32K during runtime.
-
- 28 Jul 1999 (Matthias Meixner - meixner@rbg.informatik.tu-darmstadt.de)
- rtl_poll was quite broken: it used the RxOK interrupt flag instead
- of the RxBufferEmpty flag which often resulted in very bad
- transmission performace - below 1kBytes/s.
-
-*/
+ * 28 Dec 2002 ken_yap@users.sourceforge.net (Ken Yap)
+ * Put in virt_to_bus calls to allow Etherboot relocation.
+ *
+ * 06 Apr 2001 ken_yap@users.sourceforge.net (Ken Yap)
+ * Following email from Hyun-Joon Cha, added a disable routine, otherwise
+ * NIC remains live and can crash the kernel later.
+ *
+ * 4 Feb 2000 espenlaub@informatik.uni-ulm.de (Klaus Espenlaub)
+ * Shuffled things around, removed the leftovers from the 8129 support
+ * that was in the Linux driver and added a bit more 8139 definitions.
+ * Moved the 8K receive buffer to a fixed, available address outside the
+ * 0x98000-0x9ffff range. This is a bit of a hack, but currently the only
+ * way to make room for the Etherboot features that need substantial amounts
+ * of code like the ANSI console support. Currently the buffer is just below
+ * 0x10000, so this even conforms to the tagged boot image specification,
+ * which reserves the ranges 0x00000-0x10000 and 0x98000-0xA0000. My
+ * interpretation of this "reserved" is that Etherboot may do whatever it
+ * likes, as long as its environment is kept intact (like the BIOS
+ * variables). Hopefully fixed rtl8139_recv() once and for all. The symptoms
+ * were that if Etherboot was left at the boot menu for several minutes, the
+ * first eth_poll failed. Seems like I am the only person who does this.
+ * First of all I fixed the debugging code and then set out for a long bug
+ * hunting session. It took me about a week full time work - poking around
+ * various places in the driver, reading Don Becker's and Jeff Garzik's Linux
+ * driver and even the FreeBSD driver (what a piece of crap!) - and
+ * eventually spotted the nasty thing: the transmit routine was acknowledging
+ * each and every interrupt pending, including the RxOverrun and RxFIFIOver
+ * interrupts. This confused the RTL8139 thoroughly. It destroyed the
+ * Rx ring contents by dumping the 2K FIFO contents right where we wanted to
+ * get the next packet. Oh well, what fun.
+ *
+ * 18 Jan 2000 mdc@thinguin.org (Marty Connor)
+ * Drastically simplified error handling. Basically, if any error
+ * in transmission or reception occurs, the card is reset.
+ * Also, pointed all transmit descriptors to the same buffer to
+ * save buffer space. This should decrease driver size and avoid
+ * corruption because of exceeding 32K during runtime.
+ *
+ * 28 Jul 1999 (Matthias Meixner - meixner@rbg.informatik.tu-darmstadt.de)
+ * rtl8139_recv was quite broken: it used the RxOK interrupt flag instead
+ * of the RxBufferEmpty flag which often resulted in very bad
+ * transmission performace - below 1kBytes/s.
+ *
+ */
#include <common.h>
#include <cpu_func.h>
-#include <linux/types.h>
+#include <log.h>
#include <malloc.h>
#include <net.h>
#include <netdev.h>
#include <asm/io.h>
#include <pci.h>
+#include <linux/bitops.h>
+#include <linux/delay.h>
+#include <linux/types.h>
#define RTL_TIMEOUT 100000
-/* PCI Tuning Parameters
- Threshold is bytes transferred to chip before transmission starts. */
+/* PCI Tuning Parameters */
+/* Threshold is bytes transferred to chip before transmission starts. */
#define TX_FIFO_THRESH 256 /* In bytes, rounded down to 32 byte units. */
#define RX_FIFO_THRESH 4 /* Rx buffer level before first PCI xfer. */
#define RX_DMA_BURST 4 /* Maximum PCI burst, '4' is 256 bytes */
#define RTL_STS_RXBADALIGN BIT(1)
#define RTL_STS_RXSTATUSOK BIT(0)
-static int ioaddr;
-static unsigned int cur_rx,cur_tx;
+static unsigned int cur_rx, cur_tx;
/* The RTL8139 can only transmit from a contiguous, aligned memory block. */
-static unsigned char tx_buffer[TX_BUF_SIZE] __attribute__((aligned(4)));
-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 read_eeprom(int location, int addr_len);
-static void rtl_reset(struct eth_device *dev);
-static int rtl_transmit(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)
-{
- return (0);
-}
-
-static struct pci_device_id supported[] = {
- {PCI_VENDOR_ID_REALTEK, PCI_DEVICE_ID_REALTEK_8139},
- {PCI_VENDOR_ID_DLINK, PCI_DEVICE_ID_DLINK_8139},
- {}
-};
-
-int rtl8139_initialize(bd_t *bis)
-{
- pci_dev_t devno;
- int card_number = 0;
- struct eth_device *dev;
- u32 iobase;
- int idx=0;
-
- while(1){
- /* Find RTL8139 */
- if ((devno = pci_find_devices(supported, idx++)) < 0)
- break;
-
- pci_read_config_dword(devno, PCI_BASE_ADDRESS_1, &iobase);
- iobase &= ~0xf;
-
- debug ("rtl8139: REALTEK RTL8139 @0x%x\n", iobase);
-
- dev = (struct eth_device *)malloc(sizeof *dev);
- if (!dev) {
- printf("Can not allocate memory of rtl8139\n");
- break;
- }
- memset(dev, 0, sizeof(*dev));
-
- sprintf (dev->name, "RTL8139#%d", card_number);
-
- dev->priv = (void *) devno;
- dev->iobase = (int)bus_to_phys(iobase);
- dev->init = rtl8139_probe;
- dev->halt = rtl_disable;
- dev->send = rtl_transmit;
- dev->recv = rtl_poll;
- dev->mcast = rtl_bcast_addr;
-
- eth_register (dev);
-
- card_number++;
-
- pci_write_config_byte (devno, PCI_LATENCY_TIMER, 0x20);
-
- udelay (10 * 1000);
- }
-
- return card_number;
-}
-
-static int rtl8139_probe(struct eth_device *dev, bd_t *bis)
-{
- int i;
- int addr_len;
- unsigned short *ap = (unsigned short *)dev->enetaddr;
-
- ioaddr = dev->iobase;
-
- /* Bring the chip out of low-power mode. */
- outb(0x00, ioaddr + RTL_REG_CONFIG1);
-
- addr_len = read_eeprom(0,8) == 0x8129 ? 8 : 6;
- for (i = 0; i < 3; i++)
- *ap++ = le16_to_cpu (read_eeprom(i + 7, addr_len));
-
- rtl_reset(dev);
-
- if (inb(ioaddr + RTL_REG_MEDIASTATUS) & RTL_REG_MEDIASTATUS_MSRLINKFAIL) {
- printf("Cable not connected or other link failure\n");
- return -1 ;
- }
-
- return 0;
-}
+static unsigned char tx_buffer[TX_BUF_SIZE] __aligned(4);
+static unsigned char rx_ring[RX_BUF_LEN + 16] __aligned(4);
/* Serial EEPROM section. */
inl(regbase + RTL_REG_CFG9346);
}
-static int read_eeprom(int location, int addr_len)
+static int rtl8139_read_eeprom(struct eth_device *dev,
+ unsigned int location, unsigned int addr_len)
{
- int i;
+ unsigned int read_cmd = location | (EE_READ_CMD << addr_len);
+ uintptr_t ee_addr = dev->iobase + RTL_REG_CFG9346;
unsigned int retval = 0;
- long ee_addr = ioaddr + RTL_REG_CFG9346;
- int read_cmd = location | (EE_READ_CMD << addr_len);
+ u8 dataval;
+ int i;
outb(EE_ENB & ~EE_CS, ee_addr);
outb(EE_ENB, ee_addr);
- rtl8139_eeprom_delay(ioaddr);
+ rtl8139_eeprom_delay(dev->iobase);
/* Shift the read command bits out. */
for (i = 4 + addr_len; i >= 0; i--) {
- int dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0;
+ dataval = (read_cmd & BIT(i)) ? EE_DATA_WRITE : 0;
outb(EE_ENB | dataval, ee_addr);
- rtl8139_eeprom_delay(ioaddr);
+ rtl8139_eeprom_delay(dev->iobase);
outb(EE_ENB | dataval | EE_SHIFT_CLK, ee_addr);
- rtl8139_eeprom_delay(ioaddr);
+ rtl8139_eeprom_delay(dev->iobase);
}
+
outb(EE_ENB, ee_addr);
- rtl8139_eeprom_delay(ioaddr);
+ rtl8139_eeprom_delay(dev->iobase);
for (i = 16; i > 0; i--) {
outb(EE_ENB | EE_SHIFT_CLK, ee_addr);
- rtl8139_eeprom_delay(ioaddr);
- retval = (retval << 1) | ((inb(ee_addr) & EE_DATA_READ) ? 1 : 0);
+ rtl8139_eeprom_delay(dev->iobase);
+ retval <<= 1;
+ retval |= inb(ee_addr) & EE_DATA_READ;
outb(EE_ENB, ee_addr);
- rtl8139_eeprom_delay(ioaddr);
+ rtl8139_eeprom_delay(dev->iobase);
}
/* Terminate the EEPROM access. */
outb(~EE_CS, ee_addr);
- rtl8139_eeprom_delay(ioaddr);
+ rtl8139_eeprom_delay(dev->iobase);
+
return retval;
}
(RX_FIFO_THRESH << 13) |
(RX_DMA_BURST << 8);
-static void set_rx_mode(struct eth_device *dev) {
- unsigned int mc_filter[2];
- int rx_mode;
+static void rtl8139_set_rx_mode(struct eth_device *dev)
+{
/* !IFF_PROMISC */
- rx_mode = RTL_REG_RXCONFIG_ACCEPTBROADCAST |
- RTL_REG_RXCONFIG_ACCEPTMULTICAST |
- RTL_REG_RXCONFIG_ACCEPTMYPHYS;
- mc_filter[1] = mc_filter[0] = 0xffffffff;
+ unsigned int rx_mode = RTL_REG_RXCONFIG_ACCEPTBROADCAST |
+ RTL_REG_RXCONFIG_ACCEPTMULTICAST |
+ RTL_REG_RXCONFIG_ACCEPTMYPHYS;
- outl(rtl8139_rx_config | rx_mode, ioaddr + RTL_REG_RXCONFIG);
+ outl(rtl8139_rx_config | rx_mode, dev->iobase + RTL_REG_RXCONFIG);
- outl(mc_filter[0], ioaddr + RTL_REG_MAR0 + 0);
- outl(mc_filter[1], ioaddr + RTL_REG_MAR0 + 4);
+ outl(0xffffffff, dev->iobase + RTL_REG_MAR0 + 0);
+ outl(0xffffffff, dev->iobase + RTL_REG_MAR0 + 4);
}
-static void rtl_reset(struct eth_device *dev)
+static void rtl8139_hw_reset(struct eth_device *dev)
{
+ u8 reg;
int i;
- outb(RTL_REG_CHIPCMD_CMDRESET, ioaddr + RTL_REG_CHIPCMD);
-
- cur_rx = 0;
- cur_tx = 0;
+ outb(RTL_REG_CHIPCMD_CMDRESET, dev->iobase + RTL_REG_CHIPCMD);
/* Give the chip 10ms to finish the reset. */
- for (i=0; i<100; ++i){
- if ((inb(ioaddr + RTL_REG_CHIPCMD) &
- RTL_REG_CHIPCMD_CMDRESET) == 0)
+ for (i = 0; i < 100; i++) {
+ reg = inb(dev->iobase + RTL_REG_CHIPCMD);
+ if (!(reg & RTL_REG_CHIPCMD_CMDRESET))
break;
- udelay (100); /* wait 100us */
+
+ udelay(100);
}
+}
+static void rtl8139_reset(struct eth_device *dev)
+{
+ int i;
+
+ cur_rx = 0;
+ cur_tx = 0;
+
+ rtl8139_hw_reset(dev);
for (i = 0; i < ETH_ALEN; i++)
- outb(dev->enetaddr[i], ioaddr + RTL_REG_MAC0 + i);
+ outb(dev->enetaddr[i], dev->iobase + RTL_REG_MAC0 + i);
/* Must enable Tx/Rx before setting transfer thresholds! */
outb(RTL_REG_CHIPCMD_CMDRXENB | RTL_REG_CHIPCMD_CMDTXENB,
- ioaddr + RTL_REG_CHIPCMD);
- outl((RX_FIFO_THRESH<<13) | (RX_BUF_LEN_IDX<<11) | (RX_DMA_BURST<<8),
- ioaddr + RTL_REG_RXCONFIG); /* accept no frames yet! */
- outl((TX_DMA_BURST<<8)|0x03000000, ioaddr + RTL_REG_TXCONFIG);
-
- /* The Linux driver changes RTL_REG_CONFIG1 here to use a different LED pattern
- * for half duplex or full/autodetect duplex (for full/autodetect, the
- * outputs are TX/RX, Link10/100, FULL, while for half duplex it uses
- * TX/RX, Link100, Link10). This is messy, because it doesn't match
- * the inscription on the mounting bracket. It should not be changed
- * from the configuration EEPROM default, because the card manufacturer
- * should have set that to match the card. */
-
- debug_cond(DEBUG_RX,
- "rx ring address is %lX\n",(unsigned long)rx_ring);
- flush_cache((unsigned long)rx_ring, RX_BUF_LEN);
- outl(phys_to_bus((int)rx_ring), ioaddr + RTL_REG_RXBUF);
+ dev->iobase + RTL_REG_CHIPCMD);
+
+ /* accept no frames yet! */
+ outl(rtl8139_rx_config, dev->iobase + RTL_REG_RXCONFIG);
+ outl((TX_DMA_BURST << 8) | 0x03000000, dev->iobase + RTL_REG_TXCONFIG);
- /* If we add multicast support, the RTL_REG_MAR0 register would have to be
- * initialized to 0xffffffffffffffff (two 32 bit accesses). Etherboot
- * only needs broadcast (for ARP/RARP/BOOTP/DHCP) and unicast. */
+ /*
+ * The Linux driver changes RTL_REG_CONFIG1 here to use a different
+ * LED pattern for half duplex or full/autodetect duplex (for
+ * full/autodetect, the outputs are TX/RX, Link10/100, FULL, while
+ * for half duplex it uses TX/RX, Link100, Link10). This is messy,
+ * because it doesn't match the inscription on the mounting bracket.
+ * It should not be changed from the configuration EEPROM default,
+ * because the card manufacturer should have set that to match the
+ * card.
+ */
+ debug_cond(DEBUG_RX, "rx ring address is %p\n", rx_ring);
+ flush_cache((unsigned long)rx_ring, RX_BUF_LEN);
+ outl(phys_to_bus((int)rx_ring), dev->iobase + RTL_REG_RXBUF);
+
+ /*
+ * If we add multicast support, the RTL_REG_MAR0 register would have
+ * to be initialized to 0xffffffffffffffff (two 32 bit accesses).
+ * Etherboot only needs broadcast (for ARP/RARP/BOOTP/DHCP) and
+ * unicast.
+ */
outb(RTL_REG_CHIPCMD_CMDRXENB | RTL_REG_CHIPCMD_CMDTXENB,
- ioaddr + RTL_REG_CHIPCMD);
+ dev->iobase + RTL_REG_CHIPCMD);
- outl(rtl8139_rx_config, ioaddr + RTL_REG_RXCONFIG);
+ outl(rtl8139_rx_config, dev->iobase + RTL_REG_RXCONFIG);
/* Start the chip's Tx and Rx process. */
- outl(0, ioaddr + RTL_REG_RXMISSED);
+ outl(0, dev->iobase + RTL_REG_RXMISSED);
- /* set_rx_mode */
- set_rx_mode(dev);
+ rtl8139_set_rx_mode(dev);
/* Disable all known interrupts by setting the interrupt mask. */
- outw(0, ioaddr + RTL_REG_INTRMASK);
+ outw(0, dev->iobase + 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),
+ dev->iobase + RTL_REG_TXADDR0 + cur_tx * 4);
+ outl(((TX_FIFO_THRESH << 11) & 0x003f0000) | len,
+ dev->iobase + RTL_REG_TXSTATUS0 + cur_tx * 4);
do {
- status = inw(ioaddr + RTL_REG_INTRSTATUS);
+ status = inw(dev->iobase + RTL_REG_INTRSTATUS);
/*
* Only acknlowledge interrupt sources we can properly
* handle here - the RTL_REG_INTRSTATUS_RXOVERFLOW/
* RTL_REG_INTRSTATUS_RXFIFOOVER MUST be handled in the
- * rtl_poll() function.
+ * rtl8139_recv() 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, dev->iobase + 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(dev->iobase + 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);
+ "tx timeout/error (%d usecs), status %hX txstatus %lX\n",
+ 10 * i, status, txstatus);
- return length;
- } else {
-
- debug_cond(DEBUG_TX,
- "tx timeout/error (%d usecs), status %hX txstatus %lX\n",
- 10*i, status, txstatus);
-
- rtl_reset(dev);
+ 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)
+static int rtl8139_recv(struct eth_device *dev)
{
- unsigned int status;
- unsigned int ring_offs;
+ const unsigned int rxstat = RTL_REG_INTRSTATUS_RXFIFOOVER |
+ RTL_REG_INTRSTATUS_RXOVERFLOW |
+ RTL_REG_INTRSTATUS_RXOK;
unsigned int rx_size, rx_status;
- int length=0;
-
- ioaddr = dev->iobase;
+ unsigned int ring_offs;
+ unsigned int status;
+ int length = 0;
- if (inb(ioaddr + RTL_REG_CHIPCMD) & RTL_REG_CHIPCMD_RXBUFEMPTY) {
+ if (inb(dev->iobase + RTL_REG_CHIPCMD) & RTL_REG_CHIPCMD_RXBUFEMPTY)
return 0;
- }
- status = inw(ioaddr + RTL_REG_INTRSTATUS);
+ status = inw(dev->iobase + RTL_REG_INTRSTATUS);
/* See below for the rest of the interrupt acknowledges. */
- outw(status & ~(RTL_REG_INTRSTATUS_RXFIFOOVER |
- RTL_REG_INTRSTATUS_RXOVERFLOW |
- RTL_REG_INTRSTATUS_RXOK),
- ioaddr + RTL_REG_INTRSTATUS);
+ outw(status & ~rxstat, dev->iobase + RTL_REG_INTRSTATUS);
- debug_cond(DEBUG_RX, "rtl_poll: int %hX ", status);
+ debug_cond(DEBUG_RX, "%s: int %hX ", __func__, status);
ring_offs = cur_rx % RX_BUF_LEN;
/* ring_offs is guaranteed being 4-byte aligned */
if ((rx_status & (RTL_STS_RXBADSYMBOL | RTL_STS_RXRUNT |
RTL_STS_RXTOOLONG | RTL_STS_RXCRCERR |
RTL_STS_RXBADALIGN)) ||
- (rx_size < ETH_ZLEN) || (rx_size > ETH_FRAME_LEN + 4)) {
+ (rx_size < ETH_ZLEN) ||
+ (rx_size > ETH_FRAME_LEN + 4)) {
printf("rx error %hX\n", rx_status);
- rtl_reset(dev); /* this clears all interrupts still pending */
+ /* this clears all interrupts still pending */
+ rtl8139_reset(dev);
return 0;
}
/* Received a good packet */
length = rx_size - 4; /* no one cares about the FCS */
- if (ring_offs+4+rx_size-4 > RX_BUF_LEN) {
- int semi_count = RX_BUF_LEN - ring_offs - 4;
+ if (ring_offs + 4 + rx_size - 4 > RX_BUF_LEN) {
unsigned char rxdata[RX_BUF_LEN];
+ int semi_count = RX_BUF_LEN - ring_offs - 4;
memcpy(rxdata, rx_ring + ring_offs + 4, semi_count);
- memcpy(&(rxdata[semi_count]), rx_ring, rx_size-4-semi_count);
+ memcpy(&rxdata[semi_count], rx_ring,
+ rx_size - 4 - semi_count);
net_process_received_packet(rxdata, length);
debug_cond(DEBUG_RX, "rx packet %d+%d bytes",
- semi_count, rx_size-4-semi_count);
+ semi_count, rx_size - 4 - semi_count);
} else {
net_process_received_packet(rx_ring + ring_offs + 4, length);
- debug_cond(DEBUG_RX, "rx packet %d bytes", rx_size-4);
+ debug_cond(DEBUG_RX, "rx packet %d bytes", rx_size - 4);
}
flush_cache((unsigned long)rx_ring, RX_BUF_LEN);
- cur_rx = (cur_rx + rx_size + 4 + 3) & ~3;
- outw(cur_rx - 16, ioaddr + RTL_REG_RXBUFPTR);
- /* See RTL8139 Programming Guide V0.1 for the official handling of
- * Rx overflow situations. The document itself contains basically no
- * usable information, except for a few exception handling rules. */
- outw(status & (RTL_REG_INTRSTATUS_RXFIFOOVER |
- RTL_REG_INTRSTATUS_RXOVERFLOW |
- RTL_REG_INTRSTATUS_RXOK), ioaddr + RTL_REG_INTRSTATUS);
+ cur_rx = ROUND(cur_rx + rx_size + 4, 4);
+ outw(cur_rx - 16, dev->iobase + RTL_REG_RXBUFPTR);
+ /*
+ * See RTL8139 Programming Guide V0.1 for the official handling of
+ * Rx overflow situations. The document itself contains basically
+ * no usable information, except for a few exception handling rules.
+ */
+ outw(status & rxstat, dev->iobase + RTL_REG_INTRSTATUS);
+
return length;
}
-static void rtl_disable(struct eth_device *dev)
+static int rtl8139_init(struct eth_device *dev, bd_t *bis)
{
- int i;
+ unsigned short *ap = (unsigned short *)dev->enetaddr;
+ int addr_len, i;
+ u8 reg;
- ioaddr = dev->iobase;
+ /* Bring the chip out of low-power mode. */
+ outb(0x00, dev->iobase + RTL_REG_CONFIG1);
- /* reset the chip */
- outb(RTL_REG_CHIPCMD_CMDRESET, ioaddr + RTL_REG_CHIPCMD);
+ addr_len = rtl8139_read_eeprom(dev, 0, 8) == 0x8129 ? 8 : 6;
+ for (i = 0; i < 3; i++)
+ *ap++ = le16_to_cpu(rtl8139_read_eeprom(dev, i + 7, addr_len));
- /* Give the chip 10ms to finish the reset. */
- for (i=0; i<100; ++i){
- if ((inb(ioaddr + RTL_REG_CHIPCMD) & RTL_REG_CHIPCMD_CMDRESET) == 0) break;
- udelay (100); /* wait 100us */
+ rtl8139_reset(dev);
+
+ reg = inb(dev->iobase + RTL_REG_MEDIASTATUS);
+ if (reg & RTL_REG_MEDIASTATUS_MSRLINKFAIL) {
+ printf("Cable not connected or other link failure\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+static void rtl8139_stop(struct eth_device *dev)
+{
+ rtl8139_hw_reset(dev);
+}
+
+static int rtl8139_bcast_addr(struct eth_device *dev, const u8 *bcast_mac,
+ int join)
+{
+ return 0;
+}
+
+static void rtl8139_name(char *str, int card_number)
+{
+ sprintf(str, "RTL8139#%u", card_number);
+}
+
+static struct pci_device_id supported[] = {
+ { PCI_VENDOR_ID_REALTEK, PCI_DEVICE_ID_REALTEK_8139 },
+ { PCI_VENDOR_ID_DLINK, PCI_DEVICE_ID_DLINK_8139 },
+ { }
+};
+
+int rtl8139_initialize(bd_t *bis)
+{
+ struct eth_device *dev;
+ int card_number = 0;
+ pci_dev_t devno;
+ int idx = 0;
+ u32 iobase;
+
+ while (1) {
+ /* Find RTL8139 */
+ devno = pci_find_devices(supported, idx++);
+ if (devno < 0)
+ break;
+
+ pci_read_config_dword(devno, PCI_BASE_ADDRESS_1, &iobase);
+ iobase &= ~0xf;
+
+ debug("rtl8139: REALTEK RTL8139 @0x%x\n", iobase);
+
+ dev = calloc(1, sizeof(*dev));
+ if (!dev) {
+ printf("Can not allocate memory of rtl8139\n");
+ break;
+ }
+
+ rtl8139_name(dev->name, card_number);
+
+ dev->priv = (void *)devno;
+ dev->iobase = (int)bus_to_phys(iobase);
+ dev->init = rtl8139_init;
+ dev->halt = rtl8139_stop;
+ dev->send = rtl8139_send;
+ dev->recv = rtl8139_recv;
+ dev->mcast = rtl8139_bcast_addr;
+
+ eth_register(dev);
+
+ card_number++;
+
+ pci_write_config_byte(devno, PCI_LATENCY_TIMER, 0x20);
+
+ udelay(10 * 1000);
}
+
+ return card_number;
}
projects / platform / kernel / u-boot.git / blobdiff