diff options
Diffstat (limited to 'drivers/net/3c589.c')
| -rw-r--r-- | drivers/net/3c589.c | 517 |
1 files changed, 0 insertions, 517 deletions
diff --git a/drivers/net/3c589.c b/drivers/net/3c589.c deleted file mode 100644 index f2c7d326b..000000000 --- a/drivers/net/3c589.c +++ /dev/null @@ -1,517 +0,0 @@ -/*------------------------------------------------------------------------ - . 3c589.c - . This is a driver for 3Com's 3C589 (Etherlink III) PCMCIA Ethernet device. - . - . (C) Copyright 2002 - . Sysgo Real-Time Solutions, GmbH <www.elinos.com> - . Rolf Offermanns <rof@sysgo.de> - . - . This program is free software; you can redistribute it and/or modify - . it under the terms of the GNU General Public License as published by - . the Free Software Foundation; either version 2 of the License, or - . (at your option) any later version. - . - . This program is distributed in the hope that it will be useful, - . but WITHOUT ANY WARRANTY; without even the implied warranty of - . MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - . GNU General Public License for more details. - . - . You should have received a copy of the GNU General Public License - . along with this program; if not, write to the Free Software - . Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - . - ----------------------------------------------------------------------------*/ - -#include <common.h> -#include <command.h> -#include <net.h> - -#include "3c589.h" - - -/* Use power-down feature of the chip */ -#define POWER_DOWN 0 - -#define NO_AUTOPROBE - -static const char version[] = - "Your ad here! :P\n"; - - -#undef EL_DEBUG - -typedef unsigned char byte; -typedef unsigned short word; -typedef unsigned long int dword; -/*------------------------------------------------------------------------ - . - . Configuration options, for the experienced user to change. - . - -------------------------------------------------------------------------*/ - -/* - . Wait time for memory to be free. This probably shouldn't be - . tuned that much, as waiting for this means nothing else happens - . in the system -*/ -#define MEMORY_WAIT_TIME 16 - - -#if (EL_DEBUG > 2 ) -#define PRINTK3(args...) printf(args) -#else -#define PRINTK3(args...) -#endif - -#if EL_DEBUG > 1 -#define PRINTK2(args...) printf(args) -#else -#define PRINTK2(args...) -#endif - -#ifdef EL_DEBUG -#define PRINTK(args...) printf(args) -#else -#define PRINTK(args...) -#endif - -#define outb(args...) mmio_outb(args) -#define mmio_outb(value, addr) (*((volatile byte *)(addr)) = value) - -#define inb(args...) mmio_inb(args) -#define mmio_inb(addr) (*((volatile byte *)(addr))) - -#define outw(args...) mmio_outw(args) -#define mmio_outw(value, addr) (*((volatile word *)(addr)) = value) - -#define inw(args...) mmio_inw(args) -#define mmio_inw(addr) (*((volatile word *)(addr))) - -#define outsw(args...) mmio_outsw(args) -#define mmio_outsw(r,b,l) ({ int __i; \ - word *__b2; \ - __b2 = (word *) b; \ - for (__i = 0; __i < l; __i++) { \ - mmio_outw( *(__b2 + __i), r); \ - } \ - }) - -#define insw(args...) mmio_insw(args) -#define mmio_insw(r,b,l) ({ int __i ; \ - word *__b2; \ - __b2 = (word *) b; \ - for (__i = 0; __i < l; __i++) { \ - *(__b2 + __i) = mmio_inw(r); \ - mmio_inw(0); \ - }; \ - }) - -/*------------------------------------------------------------------------ - . - . The internal workings of the driver. If you are changing anything - . here with the 3Com stuff, you should have the datasheet and know - . what you are doing. - . - -------------------------------------------------------------------------*/ -#define EL_BASE_ADDR 0x20000000 - - -/* Offsets from base I/O address. */ -#define EL3_DATA 0x00 -#define EL3_TIMER 0x0a -#define EL3_CMD 0x0e -#define EL3_STATUS 0x0e - -#define EEPROM_READ 0x0080 - -#define EL3WINDOW(win_num) mmio_outw(SelectWindow + (win_num), EL_BASE_ADDR + EL3_CMD) - -/* The top five bits written to EL3_CMD are a command, the lower - 11 bits are the parameter, if applicable. */ -enum c509cmd { - TotalReset = 0<<11, SelectWindow = 1<<11, StartCoax = 2<<11, - RxDisable = 3<<11, RxEnable = 4<<11, RxReset = 5<<11, RxDiscard = 8<<11, - TxEnable = 9<<11, TxDisable = 10<<11, TxReset = 11<<11, - FakeIntr = 12<<11, AckIntr = 13<<11, SetIntrEnb = 14<<11, - SetStatusEnb = 15<<11, SetRxFilter = 16<<11, SetRxThreshold = 17<<11, - SetTxThreshold = 18<<11, SetTxStart = 19<<11, StatsEnable = 21<<11, - StatsDisable = 22<<11, StopCoax = 23<<11, -}; - -enum c509status { - IntLatch = 0x0001, AdapterFailure = 0x0002, TxComplete = 0x0004, - TxAvailable = 0x0008, RxComplete = 0x0010, RxEarly = 0x0020, - IntReq = 0x0040, StatsFull = 0x0080, CmdBusy = 0x1000 -}; - -/* The SetRxFilter command accepts the following classes: */ -enum RxFilter { - RxStation = 1, RxMulticast = 2, RxBroadcast = 4, RxProm = 8 -}; - -/* Register window 1 offsets, the window used in normal operation. */ -#define TX_FIFO 0x00 -#define RX_FIFO 0x00 -#define RX_STATUS 0x08 -#define TX_STATUS 0x0B -#define TX_FREE 0x0C /* Remaining free bytes in Tx buffer. */ - - -/* - Read a word from the EEPROM using the regular EEPROM access register. - Assume that we are in register window zero. -*/ -static word read_eeprom(dword ioaddr, int index) -{ - int i; - outw(EEPROM_READ + index, ioaddr + 0xa); - /* Reading the eeprom takes 162 us */ - for (i = 1620; i >= 0; i--) - if ((inw(ioaddr + 10) & EEPROM_BUSY) == 0) - break; - return inw(ioaddr + 0xc); -} - -static void el_get_mac_addr( unsigned char *mac_addr ) -{ - int i; - union - { - word w; - unsigned char b[2]; - } wrd; - unsigned char old_window = inw( EL_BASE_ADDR + EL3_STATUS ) >> 13; - GO_WINDOW(0); - VX_BUSY_WAIT; - for (i = 0; i < 3; i++) - { - wrd.w = read_eeprom(EL_BASE_ADDR, 0xa+i); -#ifdef __BIG_ENDIAN - mac_addr[2*i] = wrd.b[0]; - mac_addr[2*i+1] = wrd.b[1]; -#else - mac_addr[2*i] = wrd.b[1]; - mac_addr[2*i+1] = wrd.b[0]; -#endif - } - GO_WINDOW(old_window); - VX_BUSY_WAIT; -} - - -#if EL_DEBUG > 1 -static void print_packet( byte * buf, int length ) -{ - int i; - int remainder; - int lines; - - PRINTK2("Packet of length %d \n", length ); - - lines = length / 16; - remainder = length % 16; - - for ( i = 0; i < lines ; i ++ ) { - int cur; - - for ( cur = 0; cur < 8; cur ++ ) { - byte a, b; - - a = *(buf ++ ); - b = *(buf ++ ); - PRINTK2("%02x%02x ", a, b ); - } - PRINTK2("\n"); - } - for ( i = 0; i < remainder/2 ; i++ ) { - byte a, b; - - a = *(buf ++ ); - b = *(buf ++ ); - PRINTK2("%02x%02x ", a, b ); - } - PRINTK2("\n"); -} -#endif /* EL_DEBUG > 1 */ - - -/************************************************************************** -ETH_RESET - Reset adapter -***************************************************************************/ -static void el_reset(bd_t *bd) -{ - /*********************************************************** - Reset 3Com 595 card - *************************************************************/ - /* QUICK HACK - * - adjust timing for 3c589 - * - enable io for PCMCIA */ - outw(0x0004, 0xa0000018); - udelay(100); - outw(0x0041, 0x28010000); - udelay(100); - - /* issue global reset */ - outw(GLOBAL_RESET, BASE + VX_COMMAND); - - /* must wait for at least 1ms */ - udelay(100000000); - - /* set mac addr */ - { - uchar mac_addr[6]; - int i; - - if (!eth_getenv_enetaddr("ethaddr", mac_addr)) { - el_get_mac_addr(mac_addr); - eth_setenv_enetaddr("ethaddr", mac_addr); - } - - GO_WINDOW(2); - VX_BUSY_WAIT; - - printf("3C589 MAC Addr.: "); - for (i = 0; i < 6; i++) - { - printf("%02x", mac_addr[i]); - outb(mac_addr[i], BASE + VX_W2_ADDR_0 + i); - VX_BUSY_WAIT; - } - printf("\n\n"); - } - - /* set RX filter */ - outw(SET_RX_FILTER | FIL_INDIVIDUAL | FIL_BRDCST, BASE + VX_COMMAND); - VX_BUSY_WAIT; - - - /* set irq mask and read_zero */ - outw(SET_RD_0_MASK | S_CARD_FAILURE | S_RX_COMPLETE | - S_TX_COMPLETE | S_TX_AVAIL, BASE + VX_COMMAND); - VX_BUSY_WAIT; - - outw(SET_INTR_MASK | S_CARD_FAILURE | S_RX_COMPLETE | - S_TX_COMPLETE | S_TX_AVAIL, BASE + VX_COMMAND); - VX_BUSY_WAIT; - - /* enable TP Linkbeat */ - GO_WINDOW(4); - VX_BUSY_WAIT; - - outw( ENABLE_UTP, BASE + VX_W4_MEDIA_TYPE); - VX_BUSY_WAIT; - - -/* - * Attempt to get rid of any stray interrupts that occured during - * configuration. On the i386 this isn't possible because one may - * already be queued. However, a single stray interrupt is - * unimportant. - */ - - outw(ACK_INTR | 0xff, BASE + VX_COMMAND); - VX_BUSY_WAIT; - - /* enable TX and RX */ - outw( RX_ENABLE, BASE + VX_COMMAND ); - VX_BUSY_WAIT; - - outw( TX_ENABLE, BASE + VX_COMMAND ); - VX_BUSY_WAIT; - - - /* print the diag. regs. */ - PRINTK2("Diag. Regs\n"); - PRINTK2("--> MEDIA_TYPE: %04x\n", inw(BASE + VX_W4_MEDIA_TYPE)); - PRINTK2("--> NET_DIAG: %04x\n", inw(BASE + VX_W4_NET_DIAG)); - PRINTK2("--> FIFO_DIAG: %04x\n", inw(BASE + VX_W4_FIFO_DIAG)); - PRINTK2("--> CTRLR_STATUS: %04x\n", inw(BASE + VX_W4_CTRLR_STATUS)); - PRINTK2("\n\n"); - - /* enter working mode */ - GO_WINDOW(1); - VX_BUSY_WAIT; - - /* wait for another 1ms */ - udelay(100000000); -} - - -/*----------------------------------------------------------------- - . - . The driver can be entered at any of the following entry points. - . - .------------------------------------------------------------------ */ - -extern int eth_init(bd_t *bd); -extern void eth_halt(void); -extern int eth_rx(void); -extern int eth_send(volatile void *packet, int length); - - -/* - ------------------------------------------------------------ - . - . Internal routines - . - ------------------------------------------------------------ -*/ - -int eth_init(bd_t *bd) -{ - el_reset(bd); - return 0; -} - -void eth_halt() { - return; -} - -#define EDEBUG 1 - - -/************************************************************************** -ETH_POLL - Wait for a frame -***************************************************************************/ - -int eth_rx() -{ - word status, rx_status, packet_size; - - VX_BUSY_WAIT; - - status = inw( BASE + VX_STATUS ); - - if ( (status & S_RX_COMPLETE) == 0 ) return 0; /* nothing to do */ - - /* Packet waiting -> check RX_STATUS */ - rx_status = inw( BASE + VX_W1_RX_STATUS ); - - if ( rx_status & ERR_RX ) - { - /* error in packet -> discard */ - PRINTK("[ERROR] Invalid packet -> discarding\n"); - PRINTK("-- error code 0x%02x\n", rx_status & ERR_MASK); - PRINTK("-- rx bytes 0x%04d\n", rx_status & ((1<<11) - 1)); - PRINTK("[ERROR] Invalid packet -> discarding\n"); - outw( RX_DISCARD_TOP_PACK, BASE + VX_COMMAND ); - return 0; - } - - /* correct pack. waiting in fifo */ - packet_size = rx_status & RX_BYTES_MASK; - - PRINTK("Correct packet waiting in fifo, size: %d\n", packet_size); - - { - volatile word *packet_start = (word *)(BASE + VX_W1_RX_PIO_RD_1); - word *RcvBuffer = (word *)(NetRxPackets[0]); - int wcount = 0; - - for (wcount = 0; wcount < (packet_size >> 1); wcount++) - { - *RcvBuffer++ = *(packet_start); - } - - /* handle odd packets */ - if ( packet_size & 1 ) - { - *RcvBuffer++ = *(packet_start); - } - } - - /* fifo should now be empty (besides the padding bytes) */ - if ( ((*((word *)(BASE + VX_W1_RX_STATUS))) & RX_BYTES_MASK) > 3 ) - { - PRINTK("[ERROR] Fifo not empty after packet read (remaining pkts: %d)\n", - (((*(word *)(BASE + VX_W1_RX_STATUS))) & RX_BYTES_MASK)); - } - - /* discard packet */ - *((word *)(BASE + VX_COMMAND)) = RX_DISCARD_TOP_PACK; - - /* Pass Packets to upper Layer */ - NetReceive(NetRxPackets[0], packet_size); - return packet_size; -} - - -/************************************************************************** -ETH_TRANSMIT - Transmit a frame -***************************************************************************/ -static char padmap[] = { - 0, 3, 2, 1}; - - -int eth_send(volatile void *packet, int length) { - int pad; - int status; - volatile word *buf = (word *)packet; - int dummy = 0; - - /* padding stuff */ - pad = padmap[length & 3]; - - PRINTK("eth_send(), length: %d\n", length); - /* drop acknowledgements */ - while(( status=inb(EL_BASE_ADDR + VX_W1_TX_STATUS) )& TXS_COMPLETE ) { - if(status & (TXS_UNDERRUN|TXS_MAX_COLLISION|TXS_STATUS_OVERFLOW)) { - outw(TX_RESET, EL_BASE_ADDR + VX_COMMAND); - outw(TX_ENABLE, EL_BASE_ADDR + VX_COMMAND); - PRINTK("Bad status, resetting and reenabling transmitter\n"); - } - - outb(0x0, EL_BASE_ADDR + VX_W1_TX_STATUS); - } - - - while (inw(EL_BASE_ADDR + VX_W1_FREE_TX) < length + pad + 4) { - /* no room in FIFO */ - if (dummy == 0) - { - PRINTK("No room in FIFO, waiting...\n"); - dummy++; - } - - } - - PRINTK(" ---> FIFO ready\n"); - - - outw(length, EL_BASE_ADDR + VX_W1_TX_PIO_WR_1); - - /* Second dword meaningless */ - outw(0x0, EL_BASE_ADDR + VX_W1_TX_PIO_WR_1); - -#if EL_DEBUG > 1 - print_packet((byte *)buf, length); -#endif - - /* write packet */ - { - unsigned int i, totw; - - totw = ((length + 1) >> 1); - PRINTK("Buffer: (totw = %d)\n", totw); - for (i = 0; i < totw; i++) { - outw( *(buf+i), EL_BASE_ADDR + VX_W1_TX_PIO_WR_1); - udelay(10); - } - if(totw & 1) - { /* pad to double word length */ - outw( 0, EL_BASE_ADDR + VX_W1_TX_PIO_WR_1); - udelay(10); - } - PRINTK("\n\n"); - } - - /* wait for Tx complete */ - PRINTK("Waiting for Tx to complete...\n"); - while(((status = inw(EL_BASE_ADDR + VX_STATUS)) & S_COMMAND_IN_PROGRESS) != 0) - { - udelay(10); - } - PRINTK(" ---> Tx completed, status = 0x%04x\n", status); - - return length; -} |