From b955f6ca776f3bab3d1e2c5fb1d247b203cbda14 Mon Sep 17 00:00:00 2001 From: Jeff Kirsher Date: Wed, 30 Mar 2011 07:46:36 -0700 Subject: amd: Move AMD (Lance) chipset drivers Moves the drivers for the AMD chipsets into drivers/net/ethernet/amd/ and the necessary Kconfig and Makfile changes. The au1000 (Alchemy) driver was also moved into the same directory even though it is not a "Lance" driver. CC: Peter Maydell CC: Roman Hodek CC: "Maciej W. Rozycki" CC: Donald Becker CC: Sam Creasey CC: Miguel de Icaza CC: Thomas Bogendoerfer CC: Don Fry CC: Geert Uytterhoeven CC: Russell King CC: David Davies CC: "M.Hipp" CC: Pete Popov CC: David Hinds CC: "Roger C. Pao" Signed-off-by: Jeff Kirsher --- drivers/net/atarilance.c | 1176 ---------------------------------------------- 1 file changed, 1176 deletions(-) delete mode 100644 drivers/net/atarilance.c (limited to 'drivers/net/atarilance.c') diff --git a/drivers/net/atarilance.c b/drivers/net/atarilance.c deleted file mode 100644 index 1264d78..0000000 --- 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 -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include - -/* 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, - 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: - */ -- cgit v1.1