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authorSascha Hauer <sha@octopus.labnet.pengutronix.de>2007-09-21 14:14:05 +0200
committerSascha Hauer <sha@octopus.labnet.pengutronix.de>2007-09-21 14:14:05 +0200
commitc1711479b099e84cca830b4027eb969adbe61734 (patch)
tree971101dd8a7be51035dfd41368a815c8ebb21041 /drivers/net/rtl8139.c
parent9a365ade16d8f489d223a6c960fa494d8012422b (diff)
downloadbarebox-c1711479b099e84cca830b4027eb969adbe61734.tar.gz
barebox-c1711479b099e84cca830b4027eb969adbe61734.tar.xz
remove unported includes and drivers
Diffstat (limited to 'drivers/net/rtl8139.c')
-rw-r--r--drivers/net/rtl8139.c538
1 files changed, 0 insertions, 538 deletions
diff --git a/drivers/net/rtl8139.c b/drivers/net/rtl8139.c
deleted file mode 100644
index afe1a4fdaf..0000000000
--- a/drivers/net/rtl8139.c
+++ /dev/null
@@ -1,538 +0,0 @@
-/*
- * rtl8139.c : U-Boot driver for the RealTek RTL8139
- *
- * Masami Komiya (mkomiya@sonare.it)
- *
- * Most part is taken from rtl8139.c of etherboot
- *
- */
-
-/* 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)
-
-*/
-
-/*********************************************************************/
-/* 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.
-
-*/
-
-#include <common.h>
-#include <malloc.h>
-#include <net.h>
-#include <asm/io.h>
-#include <pci.h>
-
-#if (CONFIG_COMMANDS & CFG_CMD_NET) && defined(CONFIG_NET_MULTI) && \
- defined(CONFIG_RTL8139)
-
-#define TICKS_PER_SEC CFG_HZ
-#define TICKS_PER_MS (TICKS_PER_SEC/1000)
-
-#define RTL_TIMEOUT (1*TICKS_PER_SEC)
-
-#define ETH_FRAME_LEN 1514
-#define ETH_ALEN 6
-#define ETH_ZLEN 60
-
-/* 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 TX_DMA_BURST 4 /* Calculate as 16<<val. */
-#define NUM_TX_DESC 4 /* Number of Tx descriptor registers. */
-#define TX_BUF_SIZE ETH_FRAME_LEN /* FCS is added by the chip */
-#define RX_BUF_LEN_IDX 0 /* 0, 1, 2 is allowed - 8,16,32K rx buffer */
-#define RX_BUF_LEN (8192 << RX_BUF_LEN_IDX)
-
-#undef DEBUG_TX
-#undef DEBUG_RX
-
-#define currticks() get_timer(0)
-#define bus_to_phys(a) pci_mem_to_phys((pci_dev_t)dev->priv, a)
-#define phys_to_bus(a) pci_phys_to_mem((pci_dev_t)dev->priv, a)
-
-/* Symbolic offsets to registers. */
-enum RTL8139_registers {
- MAC0=0, /* Ethernet hardware address. */
- MAR0=8, /* Multicast filter. */
- TxStatus0=0x10, /* Transmit status (four 32bit registers). */
- TxAddr0=0x20, /* Tx descriptors (also four 32bit). */
- RxBuf=0x30, RxEarlyCnt=0x34, RxEarlyStatus=0x36,
- ChipCmd=0x37, RxBufPtr=0x38, RxBufAddr=0x3A,
- IntrMask=0x3C, IntrStatus=0x3E,
- TxConfig=0x40, RxConfig=0x44,
- Timer=0x48, /* general-purpose counter. */
- RxMissed=0x4C, /* 24 bits valid, write clears. */
- Cfg9346=0x50, Config0=0x51, Config1=0x52,
- TimerIntrReg=0x54, /* intr if gp counter reaches this value */
- MediaStatus=0x58,
- Config3=0x59,
- MultiIntr=0x5C,
- RevisionID=0x5E, /* revision of the RTL8139 chip */
- TxSummary=0x60,
- MII_BMCR=0x62, MII_BMSR=0x64, NWayAdvert=0x66, NWayLPAR=0x68,
- NWayExpansion=0x6A,
- DisconnectCnt=0x6C, FalseCarrierCnt=0x6E,
- NWayTestReg=0x70,
- RxCnt=0x72, /* packet received counter */
- CSCR=0x74, /* chip status and configuration register */
- PhyParm1=0x78,TwisterParm=0x7c,PhyParm2=0x80, /* undocumented */
- /* from 0x84 onwards are a number of power management/wakeup frame
- * definitions we will probably never need to know about. */
-};
-
-enum ChipCmdBits {
- CmdReset=0x10, CmdRxEnb=0x08, CmdTxEnb=0x04, RxBufEmpty=0x01, };
-
-/* Interrupt register bits, using my own meaningful names. */
-enum IntrStatusBits {
- PCIErr=0x8000, PCSTimeout=0x4000, CableLenChange= 0x2000,
- RxFIFOOver=0x40, RxUnderrun=0x20, RxOverflow=0x10,
- TxErr=0x08, TxOK=0x04, RxErr=0x02, RxOK=0x01,
-};
-enum TxStatusBits {
- TxHostOwns=0x2000, TxUnderrun=0x4000, TxStatOK=0x8000,
- TxOutOfWindow=0x20000000, TxAborted=0x40000000,
- TxCarrierLost=0x80000000,
-};
-enum RxStatusBits {
- RxMulticast=0x8000, RxPhysical=0x4000, RxBroadcast=0x2000,
- RxBadSymbol=0x0020, RxRunt=0x0010, RxTooLong=0x0008, RxCRCErr=0x0004,
- RxBadAlign=0x0002, RxStatusOK=0x0001,
-};
-
-enum MediaStatusBits {
- MSRTxFlowEnable=0x80, MSRRxFlowEnable=0x40, MSRSpeed10=0x08,
- MSRLinkFail=0x04, MSRRxPauseFlag=0x02, MSRTxPauseFlag=0x01,
-};
-
-enum MIIBMCRBits {
- BMCRReset=0x8000, BMCRSpeed100=0x2000, BMCRNWayEnable=0x1000,
- BMCRRestartNWay=0x0200, BMCRDuplex=0x0100,
-};
-
-enum CSCRBits {
- CSCR_LinkOKBit=0x0400, CSCR_LinkChangeBit=0x0800,
- CSCR_LinkStatusBits=0x0f000, CSCR_LinkDownOffCmd=0x003c0,
- CSCR_LinkDownCmd=0x0f3c0,
-};
-
-/* Bits in RxConfig. */
-enum rx_mode_bits {
- RxCfgWrap=0x80,
- AcceptErr=0x20, AcceptRunt=0x10, AcceptBroadcast=0x08,
- AcceptMulticast=0x04, AcceptMyPhys=0x02, AcceptAllPhys=0x01,
-};
-
-static int ioaddr;
-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, volatile void *packet, int length);
-static int rtl_poll(struct eth_device *dev);
-static void rtl_disable(struct eth_device *dev);
-
-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);
-
- 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;
-
- 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 speed10, fullduplex;
- int addr_len;
- unsigned short *ap = (unsigned short *)dev->enetaddr;
-
- ioaddr = dev->iobase;
-
- /* Bring the chip out of low-power mode. */
- outb(0x00, ioaddr + 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));
-
- speed10 = inb(ioaddr + MediaStatus) & MSRSpeed10;
- fullduplex = inw(ioaddr + MII_BMCR) & BMCRDuplex;
-
- rtl_reset(dev);
-
- if (inb(ioaddr + MediaStatus) & MSRLinkFail) {
- printf("Cable not connected or other link failure\n");
- return(0);
- }
-
- return 1;
-}
-
-/* Serial EEPROM section. */
-
-/* EEPROM_Ctrl bits. */
-#define EE_SHIFT_CLK 0x04 /* EEPROM shift clock. */
-#define EE_CS 0x08 /* EEPROM chip select. */
-#define EE_DATA_WRITE 0x02 /* EEPROM chip data in. */
-#define EE_WRITE_0 0x00
-#define EE_WRITE_1 0x02
-#define EE_DATA_READ 0x01 /* EEPROM chip data out. */
-#define EE_ENB (0x80 | EE_CS)
-
-/*
- Delay between EEPROM clock transitions.
- No extra delay is needed with 33Mhz PCI, but 66Mhz may change this.
-*/
-
-#define eeprom_delay() inl(ee_addr)
-
-/* The EEPROM commands include the alway-set leading bit. */
-#define EE_WRITE_CMD (5)
-#define EE_READ_CMD (6)
-#define EE_ERASE_CMD (7)
-
-static int read_eeprom(int location, int addr_len)
-{
- int i;
- unsigned int retval = 0;
- long ee_addr = ioaddr + Cfg9346;
- int read_cmd = location | (EE_READ_CMD << addr_len);
-
- outb(EE_ENB & ~EE_CS, ee_addr);
- outb(EE_ENB, ee_addr);
- eeprom_delay();
-
- /* Shift the read command bits out. */
- for (i = 4 + addr_len; i >= 0; i--) {
- int dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0;
- outb(EE_ENB | dataval, ee_addr);
- eeprom_delay();
- outb(EE_ENB | dataval | EE_SHIFT_CLK, ee_addr);
- eeprom_delay();
- }
- outb(EE_ENB, ee_addr);
- eeprom_delay();
-
- for (i = 16; i > 0; i--) {
- outb(EE_ENB | EE_SHIFT_CLK, ee_addr);
- eeprom_delay();
- retval = (retval << 1) | ((inb(ee_addr) & EE_DATA_READ) ? 1 : 0);
- outb(EE_ENB, ee_addr);
- eeprom_delay();
- }
-
- /* Terminate the EEPROM access. */
- outb(~EE_CS, ee_addr);
- eeprom_delay();
- return retval;
-}
-
-static const unsigned int rtl8139_rx_config =
- (RX_BUF_LEN_IDX << 11) |
- (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;
- /* !IFF_PROMISC */
- rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
- mc_filter[1] = mc_filter[0] = 0xffffffff;
-
- outl(rtl8139_rx_config | rx_mode, ioaddr + RxConfig);
-
- outl(mc_filter[0], ioaddr + MAR0 + 0);
- outl(mc_filter[1], ioaddr + MAR0 + 4);
-}
-
-static void rtl_reset(struct eth_device *dev)
-{
- int i;
-
- outb(CmdReset, ioaddr + ChipCmd);
-
- cur_rx = 0;
- cur_tx = 0;
-
- /* Give the chip 10ms to finish the reset. */
- for (i=0; i<100; ++i){
- if ((inb(ioaddr + ChipCmd) & CmdReset) == 0) break;
- udelay (100); /* wait 100us */
- }
-
-
- for (i = 0; i < ETH_ALEN; i++)
- outb(dev->enetaddr[i], ioaddr + MAC0 + i);
-
- /* Must enable Tx/Rx before setting transfer thresholds! */
- outb(CmdRxEnb | CmdTxEnb, ioaddr + ChipCmd);
- outl((RX_FIFO_THRESH<<13) | (RX_BUF_LEN_IDX<<11) | (RX_DMA_BURST<<8),
- ioaddr + RxConfig); /* accept no frames yet! */
- outl((TX_DMA_BURST<<8)|0x03000000, ioaddr + TxConfig);
-
- /* The Linux driver changes 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. */
-
-#ifdef DEBUG_RX
- printf("rx ring address is %X\n",(unsigned long)rx_ring);
-#endif
- outl(phys_to_bus((int)rx_ring), ioaddr + RxBuf);
-
- /* If we add multicast support, the 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(CmdRxEnb | CmdTxEnb, ioaddr + ChipCmd);
-
- outl(rtl8139_rx_config, ioaddr + RxConfig);
-
- /* Start the chip's Tx and Rx process. */
- outl(0, ioaddr + RxMissed);
-
- /* set_rx_mode */
- set_rx_mode(dev);
-
- /* Disable all known interrupts by setting the interrupt mask. */
- outw(0, ioaddr + IntrMask);
-}
-
-static int rtl_transmit(struct eth_device *dev, volatile void *packet, int length)
-{
- unsigned int status, to;
- unsigned long txstatus;
- unsigned int len = length;
-
- ioaddr = dev->iobase;
-
- memcpy((char *)tx_buffer, (char *)packet, (int)length);
-
-#ifdef DEBUG_TX
- printf("sending %d bytes\n", len);
-#endif
-
- /* 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';
- }
-
- outl(phys_to_bus((int)tx_buffer), ioaddr + TxAddr0 + cur_tx*4);
- outl(((TX_FIFO_THRESH<<11) & 0x003f0000) | len,
- ioaddr + TxStatus0 + cur_tx*4);
-
- to = currticks() + RTL_TIMEOUT;
-
- do {
- status = inw(ioaddr + IntrStatus);
- /* Only acknlowledge interrupt sources we can properly handle
- * here - the RxOverflow/RxFIFOOver MUST be handled in the
- * rtl_poll() function. */
- outw(status & (TxOK | TxErr | PCIErr), ioaddr + IntrStatus);
- if ((status & (TxOK | TxErr | PCIErr)) != 0) break;
- } while (currticks() < to);
-
- txstatus = inl(ioaddr + TxStatus0 + cur_tx*4);
-
- if (status & TxOK) {
- cur_tx = (cur_tx + 1) % NUM_TX_DESC;
-#ifdef DEBUG_TX
- printf("tx done (%d ticks), status %hX txstatus %X\n",
- to-currticks(), status, txstatus);
-#endif
- return length;
- } else {
-#ifdef DEBUG_TX
- printf("tx timeout/error (%d ticks), status %hX txstatus %X\n",
- currticks()-to, status, txstatus);
-#endif
- rtl_reset(dev);
-
- return 0;
- }
-}
-
-static int rtl_poll(struct eth_device *dev)
-{
- unsigned int status;
- unsigned int ring_offs;
- unsigned int rx_size, rx_status;
- int length=0;
-
- ioaddr = dev->iobase;
-
- if (inb(ioaddr + ChipCmd) & RxBufEmpty) {
- return 0;
- }
-
- status = inw(ioaddr + IntrStatus);
- /* See below for the rest of the interrupt acknowledges. */
- outw(status & ~(RxFIFOOver | RxOverflow | RxOK), ioaddr + IntrStatus);
-
-#ifdef DEBUG_RX
- printf("rtl_poll: int %hX ", status);
-#endif
-
- ring_offs = cur_rx % RX_BUF_LEN;
- rx_status = *(unsigned int*)KSEG1ADDR((rx_ring + ring_offs));
- rx_size = rx_status >> 16;
- rx_status &= 0xffff;
-
- if ((rx_status & (RxBadSymbol|RxRunt|RxTooLong|RxCRCErr|RxBadAlign)) ||
- (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 */
- 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;
- unsigned char rxdata[RX_BUF_LEN];
-
- memcpy(rxdata, rx_ring + ring_offs + 4, semi_count);
- memcpy(&(rxdata[semi_count]), rx_ring, rx_size-4-semi_count);
-
- NetReceive(rxdata, length);
-#ifdef DEBUG_RX
- printf("rx packet %d+%d bytes", semi_count,rx_size-4-semi_count);
-#endif
- } else {
- NetReceive(rx_ring + ring_offs + 4, length);
-#ifdef DEBUG_RX
- printf("rx packet %d bytes", rx_size-4);
-#endif
- }
-
- cur_rx = (cur_rx + rx_size + 4 + 3) & ~3;
- outw(cur_rx - 16, ioaddr + 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 & (RxFIFOOver | RxOverflow | RxOK), ioaddr + IntrStatus);
- return length;
-}
-
-static void rtl_disable(struct eth_device *dev)
-{
- int i;
-
- ioaddr = dev->iobase;
-
- /* reset the chip */
- outb(CmdReset, ioaddr + ChipCmd);
-
- /* Give the chip 10ms to finish the reset. */
- for (i=0; i<100; ++i){
- if ((inb(ioaddr + ChipCmd) & CmdReset) == 0) break;
- udelay (100); /* wait 100us */
- }
-}
-#endif /* CFG_CMD_NET && CONFIG_NET_MULTI && CONFIG_RTL8139 */