aboutsummaryrefslogtreecommitdiff
path: root/drivers/net/atarilance.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/atarilance.c')
-rw-r--r--drivers/net/atarilance.c1176
1 files changed, 0 insertions, 1176 deletions
diff --git a/drivers/net/atarilance.c b/drivers/net/atarilance.c
deleted file mode 100644
index 1264d781b554..000000000000
--- a/drivers/net/atarilance.c
+++ /dev/null
@@ -1,1176 +0,0 @@
-/* atarilance.c: Ethernet driver for VME Lance cards on the Atari */
-/*
- Written 1995/96 by Roman Hodek (Roman.Hodek@informatik.uni-erlangen.de)
-
- This software may be used and distributed according to the terms
- of the GNU General Public License, incorporated herein by reference.
-
- This drivers was written with the following sources of reference:
- - The driver for the Riebl Lance card by the TU Vienna.
- - The modified TUW driver for PAM's VME cards
- - The PC-Linux driver for Lance cards (but this is for bus master
- cards, not the shared memory ones)
- - The Amiga Ariadne driver
-
- v1.0: (in 1.2.13pl4/0.9.13)
- Initial version
- v1.1: (in 1.2.13pl5)
- more comments
- deleted some debugging stuff
- optimized register access (keep AREG pointing to CSR0)
- following AMD, CSR0_STRT should be set only after IDON is detected
- use memcpy() for data transfers, that also employs long word moves
- better probe procedure for 24-bit systems
- non-VME-RieblCards need extra delays in memcpy
- must also do write test, since 0xfxe00000 may hit ROM
- use 8/32 tx/rx buffers, which should give better NFS performance;
- this is made possible by shifting the last packet buffer after the
- RieblCard reserved area
- v1.2: (in 1.2.13pl8)
- again fixed probing for the Falcon; 0xfe01000 hits phys. 0x00010000
- and thus RAM, in case of no Lance found all memory contents have to
- be restored!
- Now possible to compile as module.
- v1.3: 03/30/96 Jes Sorensen, Roman (in 1.3)
- Several little 1.3 adaptions
- When the lance is stopped it jumps back into little-endian
- mode. It is therefore necessary to put it back where it
- belongs, in big endian mode, in order to make things work.
- This might be the reason why multicast-mode didn't work
- before, but I'm not able to test it as I only got an Amiga
- (we had similar problems with the A2065 driver).
-
-*/
-
-static char version[] = "atarilance.c: v1.3 04/04/96 "
- "Roman.Hodek@informatik.uni-erlangen.de\n";
-
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/module.h>
-#include <linux/stddef.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/skbuff.h>
-#include <linux/interrupt.h>
-#include <linux/init.h>
-#include <linux/bitops.h>
-
-#include <asm/setup.h>
-#include <asm/irq.h>
-#include <asm/atarihw.h>
-#include <asm/atariints.h>
-#include <asm/io.h>
-
-/* Debug level:
- * 0 = silent, print only serious errors
- * 1 = normal, print error messages
- * 2 = debug, print debug infos
- * 3 = debug, print even more debug infos (packet data)
- */
-
-#define LANCE_DEBUG 1
-
-#ifdef LANCE_DEBUG
-static int lance_debug = LANCE_DEBUG;
-#else
-static int lance_debug = 1;
-#endif
-module_param(lance_debug, int, 0);
-MODULE_PARM_DESC(lance_debug, "atarilance debug level (0-3)");
-MODULE_LICENSE("GPL");
-
-/* Print debug messages on probing? */
-#undef LANCE_DEBUG_PROBE
-
-#define DPRINTK(n,a) \
- do { \
- if (lance_debug >= n) \
- printk a; \
- } while( 0 )
-
-#ifdef LANCE_DEBUG_PROBE
-# define PROBE_PRINT(a) printk a
-#else
-# define PROBE_PRINT(a)
-#endif
-
-/* These define the number of Rx and Tx buffers as log2. (Only powers
- * of two are valid)
- * Much more rx buffers (32) are reserved than tx buffers (8), since receiving
- * is more time critical then sending and packets may have to remain in the
- * board's memory when main memory is low.
- */
-
-#define TX_LOG_RING_SIZE 3
-#define RX_LOG_RING_SIZE 5
-
-/* These are the derived values */
-
-#define TX_RING_SIZE (1 << TX_LOG_RING_SIZE)
-#define TX_RING_LEN_BITS (TX_LOG_RING_SIZE << 5)
-#define TX_RING_MOD_MASK (TX_RING_SIZE - 1)
-
-#define RX_RING_SIZE (1 << RX_LOG_RING_SIZE)
-#define RX_RING_LEN_BITS (RX_LOG_RING_SIZE << 5)
-#define RX_RING_MOD_MASK (RX_RING_SIZE - 1)
-
-#define TX_TIMEOUT (HZ/5)
-
-/* The LANCE Rx and Tx ring descriptors. */
-struct lance_rx_head {
- unsigned short base; /* Low word of base addr */
- volatile unsigned char flag;
- unsigned char base_hi; /* High word of base addr (unused) */
- short buf_length; /* This length is 2s complement! */
- volatile short msg_length; /* This length is "normal". */
-};
-
-struct lance_tx_head {
- unsigned short base; /* Low word of base addr */
- volatile unsigned char flag;
- unsigned char base_hi; /* High word of base addr (unused) */
- short length; /* Length is 2s complement! */
- volatile short misc;
-};
-
-struct ringdesc {
- unsigned short adr_lo; /* Low 16 bits of address */
- unsigned char len; /* Length bits */
- unsigned char adr_hi; /* High 8 bits of address (unused) */
-};
-
-/* The LANCE initialization block, described in databook. */
-struct lance_init_block {
- unsigned short mode; /* Pre-set mode */
- unsigned char hwaddr[6]; /* Physical ethernet address */
- unsigned filter[2]; /* Multicast filter (unused). */
- /* Receive and transmit ring base, along with length bits. */
- struct ringdesc rx_ring;
- struct ringdesc tx_ring;
-};
-
-/* The whole layout of the Lance shared memory */
-struct lance_memory {
- struct lance_init_block init;
- struct lance_tx_head tx_head[TX_RING_SIZE];
- struct lance_rx_head rx_head[RX_RING_SIZE];
- char packet_area[0]; /* packet data follow after the
- * init block and the ring
- * descriptors and are located
- * at runtime */
-};
-
-/* RieblCard specifics:
- * The original TOS driver for these cards reserves the area from offset
- * 0xee70 to 0xeebb for storing configuration data. Of interest to us is the
- * Ethernet address there, and the magic for verifying the data's validity.
- * The reserved area isn't touch by packet buffers. Furthermore, offset 0xfffe
- * is reserved for the interrupt vector number.
- */
-#define RIEBL_RSVD_START 0xee70
-#define RIEBL_RSVD_END 0xeec0
-#define RIEBL_MAGIC 0x09051990
-#define RIEBL_MAGIC_ADDR ((unsigned long *)(((char *)MEM) + 0xee8a))
-#define RIEBL_HWADDR_ADDR ((unsigned char *)(((char *)MEM) + 0xee8e))
-#define RIEBL_IVEC_ADDR ((unsigned short *)(((char *)MEM) + 0xfffe))
-
-/* This is a default address for the old RieblCards without a battery
- * that have no ethernet address at boot time. 00:00:36:04 is the
- * prefix for Riebl cards, the 00:00 at the end is arbitrary.
- */
-
-static unsigned char OldRieblDefHwaddr[6] = {
- 0x00, 0x00, 0x36, 0x04, 0x00, 0x00
-};
-
-
-/* I/O registers of the Lance chip */
-
-struct lance_ioreg {
-/* base+0x0 */ volatile unsigned short data;
-/* base+0x2 */ volatile unsigned short addr;
- unsigned char _dummy1[3];
-/* base+0x7 */ volatile unsigned char ivec;
- unsigned char _dummy2[5];
-/* base+0xd */ volatile unsigned char eeprom;
- unsigned char _dummy3;
-/* base+0xf */ volatile unsigned char mem;
-};
-
-/* Types of boards this driver supports */
-
-enum lance_type {
- OLD_RIEBL, /* old Riebl card without battery */
- NEW_RIEBL, /* new Riebl card with battery */
- PAM_CARD /* PAM card with EEPROM */
-};
-
-static char *lance_names[] = {
- "Riebl-Card (without battery)",
- "Riebl-Card (with battery)",
- "PAM intern card"
-};
-
-/* The driver's private device structure */
-
-struct lance_private {
- enum lance_type cardtype;
- struct lance_ioreg *iobase;
- struct lance_memory *mem;
- int cur_rx, cur_tx; /* The next free ring entry */
- int dirty_tx; /* Ring entries to be freed. */
- /* copy function */
- void *(*memcpy_f)( void *, const void *, size_t );
-/* This must be long for set_bit() */
- long tx_full;
- spinlock_t devlock;
-};
-
-/* I/O register access macros */
-
-#define MEM lp->mem
-#define DREG IO->data
-#define AREG IO->addr
-#define REGA(a) (*( AREG = (a), &DREG ))
-
-/* Definitions for packet buffer access: */
-#define PKT_BUF_SZ 1544
-/* Get the address of a packet buffer corresponding to a given buffer head */
-#define PKTBUF_ADDR(head) (((unsigned char *)(MEM)) + (head)->base)
-
-/* Possible memory/IO addresses for probing */
-
-static struct lance_addr {
- unsigned long memaddr;
- unsigned long ioaddr;
- int slow_flag;
-} lance_addr_list[] = {
- { 0xfe010000, 0xfe00fff0, 0 }, /* RieblCard VME in TT */
- { 0xffc10000, 0xffc0fff0, 0 }, /* RieblCard VME in MegaSTE
- (highest byte stripped) */
- { 0xffe00000, 0xffff7000, 1 }, /* RieblCard in ST
- (highest byte stripped) */
- { 0xffd00000, 0xffff7000, 1 }, /* RieblCard in ST with hw modif. to
- avoid conflict with ROM
- (highest byte stripped) */
- { 0xffcf0000, 0xffcffff0, 0 }, /* PAMCard VME in TT and MSTE
- (highest byte stripped) */
- { 0xfecf0000, 0xfecffff0, 0 }, /* Rhotron's PAMCard VME in TT and MSTE
- (highest byte stripped) */
-};
-
-#define N_LANCE_ADDR ARRAY_SIZE(lance_addr_list)
-
-
-/* Definitions for the Lance */
-
-/* tx_head flags */
-#define TMD1_ENP 0x01 /* end of packet */
-#define TMD1_STP 0x02 /* start of packet */
-#define TMD1_DEF 0x04 /* deferred */
-#define TMD1_ONE 0x08 /* one retry needed */
-#define TMD1_MORE 0x10 /* more than one retry needed */
-#define TMD1_ERR 0x40 /* error summary */
-#define TMD1_OWN 0x80 /* ownership (set: chip owns) */
-
-#define TMD1_OWN_CHIP TMD1_OWN
-#define TMD1_OWN_HOST 0
-
-/* tx_head misc field */
-#define TMD3_TDR 0x03FF /* Time Domain Reflectometry counter */
-#define TMD3_RTRY 0x0400 /* failed after 16 retries */
-#define TMD3_LCAR 0x0800 /* carrier lost */
-#define TMD3_LCOL 0x1000 /* late collision */
-#define TMD3_UFLO 0x4000 /* underflow (late memory) */
-#define TMD3_BUFF 0x8000 /* buffering error (no ENP) */
-
-/* rx_head flags */
-#define RMD1_ENP 0x01 /* end of packet */
-#define RMD1_STP 0x02 /* start of packet */
-#define RMD1_BUFF 0x04 /* buffer error */
-#define RMD1_CRC 0x08 /* CRC error */
-#define RMD1_OFLO 0x10 /* overflow */
-#define RMD1_FRAM 0x20 /* framing error */
-#define RMD1_ERR 0x40 /* error summary */
-#define RMD1_OWN 0x80 /* ownership (set: ship owns) */
-
-#define RMD1_OWN_CHIP RMD1_OWN
-#define RMD1_OWN_HOST 0
-
-/* register names */
-#define CSR0 0 /* mode/status */
-#define CSR1 1 /* init block addr (low) */
-#define CSR2 2 /* init block addr (high) */
-#define CSR3 3 /* misc */
-#define CSR8 8 /* address filter */
-#define CSR15 15 /* promiscuous mode */
-
-/* CSR0 */
-/* (R=readable, W=writeable, S=set on write, C=clear on write) */
-#define CSR0_INIT 0x0001 /* initialize (RS) */
-#define CSR0_STRT 0x0002 /* start (RS) */
-#define CSR0_STOP 0x0004 /* stop (RS) */
-#define CSR0_TDMD 0x0008 /* transmit demand (RS) */
-#define CSR0_TXON 0x0010 /* transmitter on (R) */
-#define CSR0_RXON 0x0020 /* receiver on (R) */
-#define CSR0_INEA 0x0040 /* interrupt enable (RW) */
-#define CSR0_INTR 0x0080 /* interrupt active (R) */
-#define CSR0_IDON 0x0100 /* initialization done (RC) */
-#define CSR0_TINT 0x0200 /* transmitter interrupt (RC) */
-#define CSR0_RINT 0x0400 /* receiver interrupt (RC) */
-#define CSR0_MERR 0x0800 /* memory error (RC) */
-#define CSR0_MISS 0x1000 /* missed frame (RC) */
-#define CSR0_CERR 0x2000 /* carrier error (no heartbeat :-) (RC) */
-#define CSR0_BABL 0x4000 /* babble: tx-ed too many bits (RC) */
-#define CSR0_ERR 0x8000 /* error (RC) */
-
-/* CSR3 */
-#define CSR3_BCON 0x0001 /* byte control */
-#define CSR3_ACON 0x0002 /* ALE control */
-#define CSR3_BSWP 0x0004 /* byte swap (1=big endian) */
-
-
-
-/***************************** Prototypes *****************************/
-
-static unsigned long lance_probe1( struct net_device *dev, struct lance_addr
- *init_rec );
-static int lance_open( struct net_device *dev );
-static void lance_init_ring( struct net_device *dev );
-static int lance_start_xmit( struct sk_buff *skb, struct net_device *dev );
-static irqreturn_t lance_interrupt( int irq, void *dev_id );
-static int lance_rx( struct net_device *dev );
-static int lance_close( struct net_device *dev );
-static void set_multicast_list( struct net_device *dev );
-static int lance_set_mac_address( struct net_device *dev, void *addr );
-static void lance_tx_timeout (struct net_device *dev);
-
-/************************* End of Prototypes **************************/
-
-
-
-
-
-static void *slow_memcpy( void *dst, const void *src, size_t len )
-
-{ char *cto = dst;
- const char *cfrom = src;
-
- while( len-- ) {
- *cto++ = *cfrom++;
- MFPDELAY();
- }
- return dst;
-}
-
-
-struct net_device * __init atarilance_probe(int unit)
-{
- int i;
- static int found;
- struct net_device *dev;
- int err = -ENODEV;
-
- if (!MACH_IS_ATARI || found)
- /* Assume there's only one board possible... That seems true, since
- * the Riebl/PAM board's address cannot be changed. */
- return ERR_PTR(-ENODEV);
-
- dev = alloc_etherdev(sizeof(struct lance_private));
- if (!dev)
- return ERR_PTR(-ENOMEM);
- if (unit >= 0) {
- sprintf(dev->name, "eth%d", unit);
- netdev_boot_setup_check(dev);
- }
-
- for( i = 0; i < N_LANCE_ADDR; ++i ) {
- if (lance_probe1( dev, &lance_addr_list[i] )) {
- found = 1;
- err = register_netdev(dev);
- if (!err)
- return dev;
- free_irq(dev->irq, dev);
- break;
- }
- }
- free_netdev(dev);
- return ERR_PTR(err);
-}
-
-
-/* Derived from hwreg_present() in atari/config.c: */
-
-static noinline int __init addr_accessible(volatile void *regp, int wordflag,
- int writeflag)
-{
- int ret;
- unsigned long flags;
- long *vbr, save_berr;
-
- local_irq_save(flags);
-
- __asm__ __volatile__ ( "movec %/vbr,%0" : "=r" (vbr) : );
- save_berr = vbr[2];
-
- __asm__ __volatile__
- ( "movel %/sp,%/d1\n\t"
- "movel #Lberr,%2@\n\t"
- "moveq #0,%0\n\t"
- "tstl %3\n\t"
- "bne 1f\n\t"
- "moveb %1@,%/d0\n\t"
- "nop \n\t"
- "bra 2f\n"
-"1: movew %1@,%/d0\n\t"
- "nop \n"
-"2: tstl %4\n\t"
- "beq 2f\n\t"
- "tstl %3\n\t"
- "bne 1f\n\t"
- "clrb %1@\n\t"
- "nop \n\t"
- "moveb %/d0,%1@\n\t"
- "nop \n\t"
- "bra 2f\n"
-"1: clrw %1@\n\t"
- "nop \n\t"
- "movew %/d0,%1@\n\t"
- "nop \n"
-"2: moveq #1,%0\n"
-"Lberr: movel %/d1,%/sp"
- : "=&d" (ret)
- : "a" (regp), "a" (&vbr[2]), "rm" (wordflag), "rm" (writeflag)
- : "d0", "d1", "memory"
- );
-
- vbr[2] = save_berr;
- local_irq_restore(flags);
-
- return ret;
-}
-
-static const struct net_device_ops lance_netdev_ops = {
- .ndo_open = lance_open,
- .ndo_stop = lance_close,
- .ndo_start_xmit = lance_start_xmit,
- .ndo_set_multicast_list = set_multicast_list,
- .ndo_set_mac_address = lance_set_mac_address,
- .ndo_tx_timeout = lance_tx_timeout,
- .ndo_validate_addr = eth_validate_addr,
- .ndo_change_mtu = eth_change_mtu,
-};
-
-static unsigned long __init lance_probe1( struct net_device *dev,
- struct lance_addr *init_rec )
-{
- volatile unsigned short *memaddr =
- (volatile unsigned short *)init_rec->memaddr;
- volatile unsigned short *ioaddr =
- (volatile unsigned short *)init_rec->ioaddr;
- struct lance_private *lp;
- struct lance_ioreg *IO;
- int i;
- static int did_version;
- unsigned short save1, save2;
-
- PROBE_PRINT(( "Probing for Lance card at mem %#lx io %#lx\n",
- (long)memaddr, (long)ioaddr ));
-
- /* Test whether memory readable and writable */
- PROBE_PRINT(( "lance_probe1: testing memory to be accessible\n" ));
- if (!addr_accessible( memaddr, 1, 1 )) goto probe_fail;
-
- /* Written values should come back... */
- PROBE_PRINT(( "lance_probe1: testing memory to be writable (1)\n" ));
- save1 = *memaddr;
- *memaddr = 0x0001;
- if (*memaddr != 0x0001) goto probe_fail;
- PROBE_PRINT(( "lance_probe1: testing memory to be writable (2)\n" ));
- *memaddr = 0x0000;
- if (*memaddr != 0x0000) goto probe_fail;
- *memaddr = save1;
-
- /* First port should be readable and writable */
- PROBE_PRINT(( "lance_probe1: testing ioport to be accessible\n" ));
- if (!addr_accessible( ioaddr, 1, 1 )) goto probe_fail;
-
- /* and written values should be readable */
- PROBE_PRINT(( "lance_probe1: testing ioport to be writeable\n" ));
- save2 = ioaddr[1];
- ioaddr[1] = 0x0001;
- if (ioaddr[1] != 0x0001) goto probe_fail;
-
- /* The CSR0_INIT bit should not be readable */
- PROBE_PRINT(( "lance_probe1: testing CSR0 register function (1)\n" ));
- save1 = ioaddr[0];
- ioaddr[1] = CSR0;
- ioaddr[0] = CSR0_INIT | CSR0_STOP;
- if (ioaddr[0] != CSR0_STOP) {
- ioaddr[0] = save1;
- ioaddr[1] = save2;
- goto probe_fail;
- }
- PROBE_PRINT(( "lance_probe1: testing CSR0 register function (2)\n" ));
- ioaddr[0] = CSR0_STOP;
- if (ioaddr[0] != CSR0_STOP) {
- ioaddr[0] = save1;
- ioaddr[1] = save2;
- goto probe_fail;
- }
-
- /* Now ok... */
- PROBE_PRINT(( "lance_probe1: Lance card detected\n" ));
- goto probe_ok;
-
- probe_fail:
- return 0;
-
- probe_ok:
- lp = netdev_priv(dev);
- MEM = (struct lance_memory *)memaddr;
- IO = lp->iobase = (struct lance_ioreg *)ioaddr;
- dev->base_addr = (unsigned long)ioaddr; /* informational only */
- lp->memcpy_f = init_rec->slow_flag ? slow_memcpy : memcpy;
-
- REGA( CSR0 ) = CSR0_STOP;
-
- /* Now test for type: If the eeprom I/O port is readable, it is a
- * PAM card */
- if (addr_accessible( &(IO->eeprom), 0, 0 )) {
- /* Switch back to Ram */
- i = IO->mem;
- lp->cardtype = PAM_CARD;
- }
- else if (*RIEBL_MAGIC_ADDR == RIEBL_MAGIC) {
- lp->cardtype = NEW_RIEBL;
- }
- else
- lp->cardtype = OLD_RIEBL;
-
- if (lp->cardtype == PAM_CARD ||
- memaddr == (unsigned short *)0xffe00000) {
- /* PAMs card and Riebl on ST use level 5 autovector */
- if (request_irq(IRQ_AUTO_5, lance_interrupt, IRQ_TYPE_PRIO,
- "PAM,Riebl-ST Ethernet", dev)) {
- printk( "Lance: request for irq %d failed\n", IRQ_AUTO_5 );
- return 0;
- }
- dev->irq = (unsigned short)IRQ_AUTO_5;
- }
- else {
- /* For VME-RieblCards, request a free VME int;
- * (This must be unsigned long, since dev->irq is short and the
- * IRQ_MACHSPEC bit would be cut off...)
- */
- unsigned long irq = atari_register_vme_int();
- if (!irq) {
- printk( "Lance: request for VME interrupt failed\n" );
- return 0;
- }
- if (request_irq(irq, lance_interrupt, IRQ_TYPE_PRIO,
- "Riebl-VME Ethernet", dev)) {
- printk( "Lance: request for irq %ld failed\n", irq );
- return 0;
- }
- dev->irq = irq;
- }
-
- printk("%s: %s at io %#lx, mem %#lx, irq %d%s, hwaddr ",
- dev->name, lance_names[lp->cardtype],
- (unsigned long)ioaddr,
- (unsigned long)memaddr,
- dev->irq,
- init_rec->slow_flag ? " (slow memcpy)" : "" );
-
- /* Get the ethernet address */
- switch( lp->cardtype ) {
- case OLD_RIEBL:
- /* No ethernet address! (Set some default address) */
- memcpy( dev->dev_addr, OldRieblDefHwaddr, 6 );
- break;
- case NEW_RIEBL:
- lp->memcpy_f( dev->dev_addr, RIEBL_HWADDR_ADDR, 6 );
- break;
- case PAM_CARD:
- i = IO->eeprom;
- for( i = 0; i < 6; ++i )
- dev->dev_addr[i] =
- ((((unsigned short *)MEM)[i*2] & 0x0f) << 4) |
- ((((unsigned short *)MEM)[i*2+1] & 0x0f));
- i = IO->mem;
- break;
- }
- printk("%pM\n", dev->dev_addr);
- if (lp->cardtype == OLD_RIEBL) {
- printk( "%s: Warning: This is a default ethernet address!\n",
- dev->name );
- printk( " Use \"ifconfig hw ether ...\" to set the address.\n" );
- }
-
- spin_lock_init(&lp->devlock);
-
- MEM->init.mode = 0x0000; /* Disable Rx and Tx. */
- for( i = 0; i < 6; i++ )
- MEM->init.hwaddr[i] = dev->dev_addr[i^1]; /* <- 16 bit swap! */
- MEM->init.filter[0] = 0x00000000;
- MEM->init.filter[1] = 0x00000000;
- MEM->init.rx_ring.adr_lo = offsetof( struct lance_memory, rx_head );
- MEM->init.rx_ring.adr_hi = 0;
- MEM->init.rx_ring.len = RX_RING_LEN_BITS;
- MEM->init.tx_ring.adr_lo = offsetof( struct lance_memory, tx_head );
- MEM->init.tx_ring.adr_hi = 0;
- MEM->init.tx_ring.len = TX_RING_LEN_BITS;
-
- if (lp->cardtype == PAM_CARD)
- IO->ivec = IRQ_SOURCE_TO_VECTOR(dev->irq);
- else
- *RIEBL_IVEC_ADDR = IRQ_SOURCE_TO_VECTOR(dev->irq);
-
- if (did_version++ == 0)
- DPRINTK( 1, ( version ));
-
- dev->netdev_ops = &lance_netdev_ops;
-
- /* XXX MSch */
- dev->watchdog_timeo = TX_TIMEOUT;
-
- return 1;
-}
-
-
-static int lance_open( struct net_device *dev )
-{
- struct lance_private *lp = netdev_priv(dev);
- struct lance_ioreg *IO = lp->iobase;
- int i;
-
- DPRINTK( 2, ( "%s: lance_open()\n", dev->name ));
-
- lance_init_ring(dev);
- /* Re-initialize the LANCE, and start it when done. */
-
- REGA( CSR3 ) = CSR3_BSWP | (lp->cardtype == PAM_CARD ? CSR3_ACON : 0);
- REGA( CSR2 ) = 0;
- REGA( CSR1 ) = 0;
- REGA( CSR0 ) = CSR0_INIT;
- /* From now on, AREG is kept to point to CSR0 */
-
- i = 1000000;
- while (--i > 0)
- if (DREG & CSR0_IDON)
- break;
- if (i <= 0 || (DREG & CSR0_ERR)) {
- DPRINTK( 2, ( "lance_open(): opening %s failed, i=%d, csr0=%04x\n",
- dev->name, i, DREG ));
- DREG = CSR0_STOP;
- return -EIO;
- }
- DREG = CSR0_IDON;
- DREG = CSR0_STRT;
- DREG = CSR0_INEA;
-
- netif_start_queue (dev);
-
- DPRINTK( 2, ( "%s: LANCE is open, csr0 %04x\n", dev->name, DREG ));
-
- return 0;
-}
-
-
-/* Initialize the LANCE Rx and Tx rings. */
-
-static void lance_init_ring( struct net_device *dev )
-{
- struct lance_private *lp = netdev_priv(dev);
- int i;
- unsigned offset;
-
- lp->tx_full = 0;
- lp->cur_rx = lp->cur_tx = 0;
- lp->dirty_tx = 0;
-
- offset = offsetof( struct lance_memory, packet_area );
-
-/* If the packet buffer at offset 'o' would conflict with the reserved area
- * of RieblCards, advance it */
-#define CHECK_OFFSET(o) \
- do { \
- if (lp->cardtype == OLD_RIEBL || lp->cardtype == NEW_RIEBL) { \
- if (((o) < RIEBL_RSVD_START) ? (o)+PKT_BUF_SZ > RIEBL_RSVD_START \
- : (o) < RIEBL_RSVD_END) \
- (o) = RIEBL_RSVD_END; \
- } \
- } while(0)
-
- for( i = 0; i < TX_RING_SIZE; i++ ) {
- CHECK_OFFSET(offset);
- MEM->tx_head[i].base = offset;
- MEM->tx_head[i].flag = TMD1_OWN_HOST;
- MEM->tx_head[i].base_hi = 0;
- MEM->tx_head[i].length = 0;
- MEM->tx_head[i].misc = 0;
- offset += PKT_BUF_SZ;
- }
-
- for( i = 0; i < RX_RING_SIZE; i++ ) {
- CHECK_OFFSET(offset);
- MEM->rx_head[i].base = offset;
- MEM->rx_head[i].flag = TMD1_OWN_CHIP;
- MEM->rx_head[i].base_hi = 0;
- MEM->rx_head[i].buf_length = -PKT_BUF_SZ;
- MEM->rx_head[i].msg_length = 0;
- offset += PKT_BUF_SZ;
- }
-}
-
-
-/* XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX */
-
-
-static void lance_tx_timeout (struct net_device *dev)
-{
- struct lance_private *lp = netdev_priv(dev);
- struct lance_ioreg *IO = lp->iobase;
-
- AREG = CSR0;
- DPRINTK( 1, ( "%s: transmit timed out, status %04x, resetting.\n",
- dev->name, DREG ));
- DREG = CSR0_STOP;
- /*
- * Always set BSWP after a STOP as STOP puts it back into
- * little endian mode.
- */
- REGA( CSR3 ) = CSR3_BSWP | (lp->cardtype == PAM_CARD ? CSR3_ACON : 0);
- dev->stats.tx_errors++;
-#ifndef final_version
- { int i;
- DPRINTK( 2, ( "Ring data: dirty_tx %d cur_tx %d%s cur_rx %d\n",
- lp->dirty_tx, lp->cur_tx,
- lp->tx_full ? " (full)" : "",
- lp->cur_rx ));
- for( i = 0 ; i < RX_RING_SIZE; i++ )
- DPRINTK( 2, ( "rx #%d: base=%04x blen=%04x mlen=%04x\n",
- i, MEM->rx_head[i].base,
- -MEM->rx_head[i].buf_length,
- MEM->rx_head[i].msg_length ));
- for( i = 0 ; i < TX_RING_SIZE; i++ )
- DPRINTK( 2, ( "tx #%d: base=%04x len=%04x misc=%04x\n",
- i, MEM->tx_head[i].base,
- -MEM->tx_head[i].length,
- MEM->tx_head[i].misc ));
- }
-#endif
- /* XXX MSch: maybe purge/reinit ring here */
- /* lance_restart, essentially */
- lance_init_ring(dev);
- REGA( CSR0 ) = CSR0_INEA | CSR0_INIT | CSR0_STRT;
- dev->trans_start = jiffies; /* prevent tx timeout */
- netif_wake_queue(dev);
-}
-
-/* XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX */
-
-static int lance_start_xmit( struct sk_buff *skb, struct net_device *dev )
-{
- struct lance_private *lp = netdev_priv(dev);
- struct lance_ioreg *IO = lp->iobase;
- int entry, len;
- struct lance_tx_head *head;
- unsigned long flags;
-
- DPRINTK( 2, ( "%s: lance_start_xmit() called, csr0 %4.4x.\n",
- dev->name, DREG ));
-
-
- /* The old LANCE chips doesn't automatically pad buffers to min. size. */
- len = skb->len;
- if (len < ETH_ZLEN)
- len = ETH_ZLEN;
- /* PAM-Card has a bug: Can only send packets with even number of bytes! */
- else if (lp->cardtype == PAM_CARD && (len & 1))
- ++len;
-
- if (len > skb->len) {
- if (skb_padto(skb, len))
- return NETDEV_TX_OK;
- }
-
- netif_stop_queue (dev);
-
- /* Fill in a Tx ring entry */
- if (lance_debug >= 3) {
- printk( "%s: TX pkt type 0x%04x from %pM to %pM"
- " data at 0x%08x len %d\n",
- dev->name, ((u_short *)skb->data)[6],
- &skb->data[6], skb->data,
- (int)skb->data, (int)skb->len );
- }
-
- /* We're not prepared for the int until the last flags are set/reset. And
- * the int may happen already after setting the OWN_CHIP... */
- spin_lock_irqsave (&lp->devlock, flags);
-
- /* Mask to ring buffer boundary. */
- entry = lp->cur_tx & TX_RING_MOD_MASK;
- head = &(MEM->tx_head[entry]);
-
- /* Caution: the write order is important here, set the "ownership" bits
- * last.
- */
-
-
- head->length = -len;
- head->misc = 0;
- lp->memcpy_f( PKTBUF_ADDR(head), (void *)skb->data, skb->len );
- head->flag = TMD1_OWN_CHIP | TMD1_ENP | TMD1_STP;
- dev->stats.tx_bytes += skb->len;
- dev_kfree_skb( skb );
- lp->cur_tx++;
- while( lp->cur_tx >= TX_RING_SIZE && lp->dirty_tx >= TX_RING_SIZE ) {
- lp->cur_tx -= TX_RING_SIZE;
- lp->dirty_tx -= TX_RING_SIZE;
- }
-
- /* Trigger an immediate send poll. */
- DREG = CSR0_INEA | CSR0_TDMD;
-
- if ((MEM->tx_head[(entry+1) & TX_RING_MOD_MASK].flag & TMD1_OWN) ==
- TMD1_OWN_HOST)
- netif_start_queue (dev);
- else
- lp->tx_full = 1;
- spin_unlock_irqrestore (&lp->devlock, flags);
-
- return NETDEV_TX_OK;
-}
-
-/* The LANCE interrupt handler. */
-
-static irqreturn_t lance_interrupt( int irq, void *dev_id )
-{
- struct net_device *dev = dev_id;
- struct lance_private *lp;
- struct lance_ioreg *IO;
- int csr0, boguscnt = 10;
- int handled = 0;
-
- if (dev == NULL) {
- DPRINTK( 1, ( "lance_interrupt(): interrupt for unknown device.\n" ));
- return IRQ_NONE;
- }
-
- lp = netdev_priv(dev);
- IO = lp->iobase;
- spin_lock (&lp->devlock);
-
- AREG = CSR0;
-
- while( ((csr0 = DREG) & (CSR0_ERR | CSR0_TINT | CSR0_RINT)) &&
- --boguscnt >= 0) {
- handled = 1;
- /* Acknowledge all of the current interrupt sources ASAP. */
- DREG = csr0 & ~(CSR0_INIT | CSR0_STRT | CSR0_STOP |
- CSR0_TDMD | CSR0_INEA);
-
- DPRINTK( 2, ( "%s: interrupt csr0=%04x new csr=%04x.\n",
- dev->name, csr0, DREG ));
-
- if (csr0 & CSR0_RINT) /* Rx interrupt */
- lance_rx( dev );
-
- if (csr0 & CSR0_TINT) { /* Tx-done interrupt */
- int dirty_tx = lp->dirty_tx;
-
- while( dirty_tx < lp->cur_tx) {
- int entry = dirty_tx & TX_RING_MOD_MASK;
- int status = MEM->tx_head[entry].flag;
-
- if (status & TMD1_OWN_CHIP)
- break; /* It still hasn't been Txed */
-
- MEM->tx_head[entry].flag = 0;
-
- if (status & TMD1_ERR) {
- /* There was an major error, log it. */
- int err_status = MEM->tx_head[entry].misc;
- dev->stats.tx_errors++;
- if (err_status & TMD3_RTRY) dev->stats.tx_aborted_errors++;
- if (err_status & TMD3_LCAR) dev->stats.tx_carrier_errors++;
- if (err_status & TMD3_LCOL) dev->stats.tx_window_errors++;
- if (err_status & TMD3_UFLO) {
- /* Ackk! On FIFO errors the Tx unit is turned off! */
- dev->stats.tx_fifo_errors++;
- /* Remove this verbosity later! */
- DPRINTK( 1, ( "%s: Tx FIFO error! Status %04x\n",
- dev->name, csr0 ));
- /* Restart the chip. */
- DREG = CSR0_STRT;
- }
- } else {
- if (status & (TMD1_MORE | TMD1_ONE | TMD1_DEF))
- dev->stats.collisions++;
- dev->stats.tx_packets++;
- }
-
- /* XXX MSch: free skb?? */
- dirty_tx++;
- }
-
-#ifndef final_version
- if (lp->cur_tx - dirty_tx >= TX_RING_SIZE) {
- DPRINTK( 0, ( "out-of-sync dirty pointer,"
- " %d vs. %d, full=%ld.\n",
- dirty_tx, lp->cur_tx, lp->tx_full ));
- dirty_tx += TX_RING_SIZE;
- }
-#endif
-
- if (lp->tx_full && (netif_queue_stopped(dev)) &&
- dirty_tx > lp->cur_tx - TX_RING_SIZE + 2) {
- /* The ring is no longer full, clear tbusy. */
- lp->tx_full = 0;
- netif_wake_queue (dev);
- }
-
- lp->dirty_tx = dirty_tx;
- }
-
- /* Log misc errors. */
- if (csr0 & CSR0_BABL) dev->stats.tx_errors++; /* Tx babble. */
- if (csr0 & CSR0_MISS) dev->stats.rx_errors++; /* Missed a Rx frame. */
- if (csr0 & CSR0_MERR) {
- DPRINTK( 1, ( "%s: Bus master arbitration failure (?!?), "
- "status %04x.\n", dev->name, csr0 ));
- /* Restart the chip. */
- DREG = CSR0_STRT;
- }
- }
-
- /* Clear any other interrupt, and set interrupt enable. */
- DREG = CSR0_BABL | CSR0_CERR | CSR0_MISS | CSR0_MERR |
- CSR0_IDON | CSR0_INEA;
-
- DPRINTK( 2, ( "%s: exiting interrupt, csr0=%#04x.\n",
- dev->name, DREG ));
-
- spin_unlock (&lp->devlock);
- return IRQ_RETVAL(handled);
-}
-
-
-static int lance_rx( struct net_device *dev )
-{
- struct lance_private *lp = netdev_priv(dev);
- int entry = lp->cur_rx & RX_RING_MOD_MASK;
- int i;
-
- DPRINTK( 2, ( "%s: rx int, flag=%04x\n", dev->name,
- MEM->rx_head[entry].flag ));
-
- /* If we own the next entry, it's a new packet. Send it up. */
- while( (MEM->rx_head[entry].flag & RMD1_OWN) == RMD1_OWN_HOST ) {
- struct lance_rx_head *head = &(MEM->rx_head[entry]);
- int status = head->flag;
-
- if (status != (RMD1_ENP|RMD1_STP)) { /* There was an error. */
- /* There is a tricky error noted by John Murphy,
- <murf@perftech.com> to Russ Nelson: Even with full-sized
- buffers it's possible for a jabber packet to use two
- buffers, with only the last correctly noting the error. */
- if (status & RMD1_ENP) /* Only count a general error at the */
- dev->stats.rx_errors++; /* end of a packet.*/
- if (status & RMD1_FRAM) dev->stats.rx_frame_errors++;
- if (status & RMD1_OFLO) dev->stats.rx_over_errors++;
- if (status & RMD1_CRC) dev->stats.rx_crc_errors++;
- if (status & RMD1_BUFF) dev->stats.rx_fifo_errors++;
- head->flag &= (RMD1_ENP|RMD1_STP);
- } else {
- /* Malloc up new buffer, compatible with net-3. */
- short pkt_len = head->msg_length & 0xfff;
- struct sk_buff *skb;
-
- if (pkt_len < 60) {
- printk( "%s: Runt packet!\n", dev->name );
- dev->stats.rx_errors++;
- }
- else {
- skb = dev_alloc_skb( pkt_len+2 );
- if (skb == NULL) {
- DPRINTK( 1, ( "%s: Memory squeeze, deferring packet.\n",
- dev->name ));
- for( i = 0; i < RX_RING_SIZE; i++ )
- if (MEM->rx_head[(entry+i) & RX_RING_MOD_MASK].flag &
- RMD1_OWN_CHIP)
- break;
-
- if (i > RX_RING_SIZE - 2) {
- dev->stats.rx_dropped++;
- head->flag |= RMD1_OWN_CHIP;
- lp->cur_rx++;
- }
- break;
- }
-
- if (lance_debug >= 3) {
- u_char *data = PKTBUF_ADDR(head);
-
- printk(KERN_DEBUG "%s: RX pkt type 0x%04x from %pM to %pM "
- "data %02x %02x %02x %02x %02x %02x %02x %02x "
- "len %d\n",
- dev->name, ((u_short *)data)[6],
- &data[6], data,
- data[15], data[16], data[17], data[18],
- data[19], data[20], data[21], data[22],
- pkt_len);
- }
-
- skb_reserve( skb, 2 ); /* 16 byte align */
- skb_put( skb, pkt_len ); /* Make room */
- lp->memcpy_f( skb->data, PKTBUF_ADDR(head), pkt_len );
- skb->protocol = eth_type_trans( skb, dev );
- netif_rx( skb );
- dev->stats.rx_packets++;
- dev->stats.rx_bytes += pkt_len;
- }
- }
-
- head->flag |= RMD1_OWN_CHIP;
- entry = (++lp->cur_rx) & RX_RING_MOD_MASK;
- }
- lp->cur_rx &= RX_RING_MOD_MASK;
-
- /* From lance.c (Donald Becker): */
- /* We should check that at least two ring entries are free. If not,
- we should free one and mark stats->rx_dropped++. */
-
- return 0;
-}
-
-
-static int lance_close( struct net_device *dev )
-{
- struct lance_private *lp = netdev_priv(dev);
- struct lance_ioreg *IO = lp->iobase;
-
- netif_stop_queue (dev);
-
- AREG = CSR0;
-
- DPRINTK( 2, ( "%s: Shutting down ethercard, status was %2.2x.\n",
- dev->name, DREG ));
-
- /* We stop the LANCE here -- it occasionally polls
- memory if we don't. */
- DREG = CSR0_STOP;
-
- return 0;
-}
-
-
-/* Set or clear the multicast filter for this adaptor.
- num_addrs == -1 Promiscuous mode, receive all packets
- num_addrs == 0 Normal mode, clear multicast list
- num_addrs > 0 Multicast mode, receive normal and MC packets, and do
- best-effort filtering.
- */
-
-static void set_multicast_list( struct net_device *dev )
-{
- struct lance_private *lp = netdev_priv(dev);
- struct lance_ioreg *IO = lp->iobase;
-
- if (netif_running(dev))
- /* Only possible if board is already started */
- return;
-
- /* We take the simple way out and always enable promiscuous mode. */
- DREG = CSR0_STOP; /* Temporarily stop the lance. */
-
- if (dev->flags & IFF_PROMISC) {
- /* Log any net taps. */
- DPRINTK( 2, ( "%s: Promiscuous mode enabled.\n", dev->name ));
- REGA( CSR15 ) = 0x8000; /* Set promiscuous mode */
- } else {
- short multicast_table[4];
- int num_addrs = netdev_mc_count(dev);
- int i;
- /* We don't use the multicast table, but rely on upper-layer
- * filtering. */
- memset( multicast_table, (num_addrs == 0) ? 0 : -1,
- sizeof(multicast_table) );
- for( i = 0; i < 4; i++ )
- REGA( CSR8+i ) = multicast_table[i];
- REGA( CSR15 ) = 0; /* Unset promiscuous mode */
- }
-
- /*
- * Always set BSWP after a STOP as STOP puts it back into
- * little endian mode.
- */
- REGA( CSR3 ) = CSR3_BSWP | (lp->cardtype == PAM_CARD ? CSR3_ACON : 0);
-
- /* Resume normal operation and reset AREG to CSR0 */
- REGA( CSR0 ) = CSR0_IDON | CSR0_INEA | CSR0_STRT;
-}
-
-
-/* This is needed for old RieblCards and possible for new RieblCards */
-
-static int lance_set_mac_address( struct net_device *dev, void *addr )
-{
- struct lance_private *lp = netdev_priv(dev);
- struct sockaddr *saddr = addr;
- int i;
-
- if (lp->cardtype != OLD_RIEBL && lp->cardtype != NEW_RIEBL)
- return -EOPNOTSUPP;
-
- if (netif_running(dev)) {
- /* Only possible while card isn't started */
- DPRINTK( 1, ( "%s: hwaddr can be set only while card isn't open.\n",
- dev->name ));
- return -EIO;
- }
-
- memcpy( dev->dev_addr, saddr->sa_data, dev->addr_len );
- for( i = 0; i < 6; i++ )
- MEM->init.hwaddr[i] = dev->dev_addr[i^1]; /* <- 16 bit swap! */
- lp->memcpy_f( RIEBL_HWADDR_ADDR, dev->dev_addr, 6 );
- /* set also the magic for future sessions */
- *RIEBL_MAGIC_ADDR = RIEBL_MAGIC;
-
- return 0;
-}
-
-
-#ifdef MODULE
-static struct net_device *atarilance_dev;
-
-static int __init atarilance_module_init(void)
-{
- atarilance_dev = atarilance_probe(-1);
- if (IS_ERR(atarilance_dev))
- return PTR_ERR(atarilance_dev);
- return 0;
-}
-
-static void __exit atarilance_module_exit(void)
-{
- unregister_netdev(atarilance_dev);
- free_irq(atarilance_dev->irq, atarilance_dev);
- free_netdev(atarilance_dev);
-}
-module_init(atarilance_module_init);
-module_exit(atarilance_module_exit);
-#endif /* MODULE */
-
-
-/*
- * Local variables:
- * c-indent-level: 4
- * tab-width: 4
- * End:
- */