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authorJeff Kirsher <jeffrey.t.kirsher@intel.com>2011-03-30 07:46:36 -0700
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2011-08-10 19:54:11 -0700
commitb955f6ca776f3bab3d1e2c5fb1d247b203cbda14 (patch)
tree88e47fa3369f95c5673d4d654ae5f432cdc79048 /drivers/net/sun3lance.c
parentca7a8e85262e93065b2a49dfb96a24d4a534a049 (diff)
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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 <pmaydell@chiark.greenend.org.uk> CC: Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de> CC: "Maciej W. Rozycki" <macro@linux-mips.org> CC: Donald Becker <becker@scyld.com> CC: Sam Creasey <sammy@users.qual.net> CC: Miguel de Icaza <miguel@nuclecu.unam.mx> CC: Thomas Bogendoerfer <tsbogend@alpha.franken.de> CC: Don Fry <pcnet32@frontier.com> CC: Geert Uytterhoeven <geert@linux-m68k.org> CC: Russell King <linux@arm.linux.org.uk> CC: David Davies <davies@maniac.ultranet.com> CC: "M.Hipp" <hippm@informatik.uni-tuebingen.de> CC: Pete Popov <ppopov@embeddedalley.com> CC: David Hinds <dahinds@users.sourceforge.net> CC: "Roger C. Pao" <rpao@paonet.org> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/sun3lance.c')
-rw-r--r--drivers/net/sun3lance.c961
1 files changed, 0 insertions, 961 deletions
diff --git a/drivers/net/sun3lance.c b/drivers/net/sun3lance.c
deleted file mode 100644
index 7d9ec23aabf6..000000000000
--- a/drivers/net/sun3lance.c
+++ /dev/null
@@ -1,961 +0,0 @@
-/* sun3lance.c: Ethernet driver for SUN3 Lance chip */
-/*
-
- Sun3 Lance ethernet driver, by Sam Creasey (sammy@users.qual.net).
- This driver is a part of the linux kernel, and is thus distributed
- under the GNU General Public License.
-
- The values used in LANCE_OBIO and LANCE_IRQ seem to be empirically
- true for the correct IRQ and address of the lance registers. They
- have not been widely tested, however. What we probably need is a
- "proper" way to search for a device in the sun3's prom, but, alas,
- linux has no such thing.
-
- This driver is largely based on atarilance.c, by Roman Hodek. Other
- sources of inspiration were the NetBSD sun3 am7990 driver, and the
- linux sparc lance driver (sunlance.c).
-
- There are more assumptions made throughout this driver, it almost
- certainly still needs work, but it does work at least for RARP/BOOTP and
- mounting the root NFS filesystem.
-
-*/
-
-static char *version = "sun3lance.c: v1.2 1/12/2001 Sam Creasey (sammy@sammy.net)\n";
-
-#include <linux/module.h>
-#include <linux/stddef.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/interrupt.h>
-#include <linux/init.h>
-#include <linux/ioport.h>
-#include <linux/delay.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/bitops.h>
-
-#include <asm/cacheflush.h>
-#include <asm/setup.h>
-#include <asm/irq.h>
-#include <asm/io.h>
-#include <asm/pgtable.h>
-#include <asm/dvma.h>
-#include <asm/idprom.h>
-#include <asm/machines.h>
-
-#ifdef CONFIG_SUN3
-#include <asm/sun3mmu.h>
-#else
-#include <asm/sun3xprom.h>
-#endif
-
-/* sun3/60 addr/irq for the lance chip. If your sun is different,
- change this. */
-#define LANCE_OBIO 0x120000
-#define LANCE_IRQ IRQ_AUTO_3
-
-/* 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 0
-
-#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, "SUN3 Lance debug level (0-3)");
-MODULE_LICENSE("GPL");
-
-#define DPRINTK(n,a) \
- do { \
- if (lance_debug >= n) \
- printk a; \
- } while( 0 )
-
-
-/* we're only using 32k of memory, so we use 4 TX
- buffers and 16 RX buffers. These values are expressed as log2. */
-
-#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)
-
-/* 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) (void *)((unsigned long)(MEM) | (head)->base)
-
-
-/* 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;
-};
-
-/* 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 int filter[2]; /* Multicast filter (unused). */
- /* Receive and transmit ring base, along with length bits. */
- unsigned short rdra;
- unsigned short rlen;
- unsigned short tdra;
- unsigned short tlen;
- unsigned short pad[4]; /* is thie needed? */
-};
-
-/* 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 rx_data[RX_RING_SIZE][PKT_BUF_SZ];
- char tx_data[TX_RING_SIZE][PKT_BUF_SZ];
-};
-
-/* The driver's private device structure */
-
-struct lance_private {
- volatile unsigned short *iobase;
- struct lance_memory *mem;
- int new_rx, new_tx; /* The next free ring entry */
- int old_tx, old_rx; /* ring entry to be processed */
-/* These two must be longs for set_bit() */
- long tx_full;
- long lock;
-};
-
-/* I/O register access macros */
-
-#define MEM lp->mem
-#define DREG lp->iobase[0]
-#define AREG lp->iobase[1]
-#define REGA(a) (*( AREG = (a), &DREG ))
-
-/* 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 int lance_probe( struct net_device *dev);
-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 );
-
-/************************* End of Prototypes **************************/
-
-struct net_device * __init sun3lance_probe(int unit)
-{
- struct net_device *dev;
- static int found;
- int err = -ENODEV;
-
- if (!MACH_IS_SUN3 && !MACH_IS_SUN3X)
- return ERR_PTR(-ENODEV);
-
- /* check that this machine has an onboard lance */
- switch(idprom->id_machtype) {
- case SM_SUN3|SM_3_50:
- case SM_SUN3|SM_3_60:
- case SM_SUN3X|SM_3_80:
- /* these machines have lance */
- break;
-
- default:
- return ERR_PTR(-ENODEV);
- }
-
- if (found)
- 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);
- }
-
- if (!lance_probe(dev))
- goto out;
-
- err = register_netdev(dev);
- if (err)
- goto out1;
- found = 1;
- return dev;
-
-out1:
-#ifdef CONFIG_SUN3
- iounmap((void __iomem *)dev->base_addr);
-#endif
-out:
- free_netdev(dev);
- return ERR_PTR(err);
-}
-
-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 = NULL,
- .ndo_change_mtu = eth_change_mtu,
- .ndo_validate_addr = eth_validate_addr,
-};
-
-static int __init lance_probe( struct net_device *dev)
-{
- unsigned long ioaddr;
-
- struct lance_private *lp;
- int i;
- static int did_version;
- volatile unsigned short *ioaddr_probe;
- unsigned short tmp1, tmp2;
-
-#ifdef CONFIG_SUN3
- ioaddr = (unsigned long)ioremap(LANCE_OBIO, PAGE_SIZE);
- if (!ioaddr)
- return 0;
-#else
- ioaddr = SUN3X_LANCE;
-#endif
-
- /* test to see if there's really a lance here */
- /* (CSRO_INIT shouldn't be readable) */
-
- ioaddr_probe = (volatile unsigned short *)ioaddr;
- tmp1 = ioaddr_probe[0];
- tmp2 = ioaddr_probe[1];
-
- ioaddr_probe[1] = CSR0;
- ioaddr_probe[0] = CSR0_INIT | CSR0_STOP;
-
- if(ioaddr_probe[0] != CSR0_STOP) {
- ioaddr_probe[0] = tmp1;
- ioaddr_probe[1] = tmp2;
-
-#ifdef CONFIG_SUN3
- iounmap((void __iomem *)ioaddr);
-#endif
- return 0;
- }
-
- lp = netdev_priv(dev);
-
- /* XXX - leak? */
- MEM = dvma_malloc_align(sizeof(struct lance_memory), 0x10000);
- if (MEM == NULL) {
-#ifdef CONFIG_SUN3
- iounmap((void __iomem *)ioaddr);
-#endif
- printk(KERN_WARNING "SUN3 Lance couldn't allocate DVMA memory\n");
- return 0;
- }
-
- lp->iobase = (volatile unsigned short *)ioaddr;
- dev->base_addr = (unsigned long)ioaddr; /* informational only */
-
- REGA(CSR0) = CSR0_STOP;
-
- if (request_irq(LANCE_IRQ, lance_interrupt, IRQF_DISABLED, "SUN3 Lance", dev) < 0) {
-#ifdef CONFIG_SUN3
- iounmap((void __iomem *)ioaddr);
-#endif
- dvma_free((void *)MEM);
- printk(KERN_WARNING "SUN3 Lance unable to allocate IRQ\n");
- return 0;
- }
- dev->irq = (unsigned short)LANCE_IRQ;
-
-
- printk("%s: SUN3 Lance at io %#lx, mem %#lx, irq %d, hwaddr ",
- dev->name,
- (unsigned long)ioaddr,
- (unsigned long)MEM,
- dev->irq);
-
- /* copy in the ethernet address from the prom */
- for(i = 0; i < 6 ; i++)
- dev->dev_addr[i] = idprom->id_ethaddr[i];
-
- /* tell the card it's ether address, bytes swapped */
- MEM->init.hwaddr[0] = dev->dev_addr[1];
- MEM->init.hwaddr[1] = dev->dev_addr[0];
- MEM->init.hwaddr[2] = dev->dev_addr[3];
- MEM->init.hwaddr[3] = dev->dev_addr[2];
- MEM->init.hwaddr[4] = dev->dev_addr[5];
- MEM->init.hwaddr[5] = dev->dev_addr[4];
-
- printk("%pM\n", dev->dev_addr);
-
- MEM->init.mode = 0x0000;
- MEM->init.filter[0] = 0x00000000;
- MEM->init.filter[1] = 0x00000000;
- MEM->init.rdra = dvma_vtob(MEM->rx_head);
- MEM->init.rlen = (RX_LOG_RING_SIZE << 13) |
- (dvma_vtob(MEM->rx_head) >> 16);
- MEM->init.tdra = dvma_vtob(MEM->tx_head);
- MEM->init.tlen = (TX_LOG_RING_SIZE << 13) |
- (dvma_vtob(MEM->tx_head) >> 16);
-
- DPRINTK(2, ("initaddr: %08lx rx_ring: %08lx tx_ring: %08lx\n",
- dvma_vtob(&(MEM->init)), dvma_vtob(MEM->rx_head),
- (dvma_vtob(MEM->tx_head))));
-
- if (did_version++ == 0)
- printk( version );
-
- dev->netdev_ops = &lance_netdev_ops;
-// KLUDGE -- REMOVE ME
- set_bit(__LINK_STATE_PRESENT, &dev->state);
-
-
- return 1;
-}
-
-static int lance_open( struct net_device *dev )
-{
- struct lance_private *lp = netdev_priv(dev);
- int i;
-
- DPRINTK( 2, ( "%s: lance_open()\n", dev->name ));
-
- REGA(CSR0) = CSR0_STOP;
-
- lance_init_ring(dev);
-
- /* From now on, AREG is kept to point to CSR0 */
- REGA(CSR0) = CSR0_INIT;
-
- 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 | CSR0_STRT | 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;
-
- lp->lock = 0;
- lp->tx_full = 0;
- lp->new_rx = lp->new_tx = 0;
- lp->old_rx = lp->old_tx = 0;
-
- for( i = 0; i < TX_RING_SIZE; i++ ) {
- MEM->tx_head[i].base = dvma_vtob(MEM->tx_data[i]);
- MEM->tx_head[i].flag = 0;
- MEM->tx_head[i].base_hi =
- (dvma_vtob(MEM->tx_data[i])) >>16;
- MEM->tx_head[i].length = 0;
- MEM->tx_head[i].misc = 0;
- }
-
- for( i = 0; i < RX_RING_SIZE; i++ ) {
- MEM->rx_head[i].base = dvma_vtob(MEM->rx_data[i]);
- MEM->rx_head[i].flag = RMD1_OWN_CHIP;
- MEM->rx_head[i].base_hi =
- (dvma_vtob(MEM->rx_data[i])) >> 16;
- MEM->rx_head[i].buf_length = -PKT_BUF_SZ | 0xf000;
- MEM->rx_head[i].msg_length = 0;
- }
-
- /* tell the card it's ether address, bytes swapped */
- MEM->init.hwaddr[0] = dev->dev_addr[1];
- MEM->init.hwaddr[1] = dev->dev_addr[0];
- MEM->init.hwaddr[2] = dev->dev_addr[3];
- MEM->init.hwaddr[3] = dev->dev_addr[2];
- MEM->init.hwaddr[4] = dev->dev_addr[5];
- MEM->init.hwaddr[5] = dev->dev_addr[4];
-
- MEM->init.mode = 0x0000;
- MEM->init.filter[0] = 0x00000000;
- MEM->init.filter[1] = 0x00000000;
- MEM->init.rdra = dvma_vtob(MEM->rx_head);
- MEM->init.rlen = (RX_LOG_RING_SIZE << 13) |
- (dvma_vtob(MEM->rx_head) >> 16);
- MEM->init.tdra = dvma_vtob(MEM->tx_head);
- MEM->init.tlen = (TX_LOG_RING_SIZE << 13) |
- (dvma_vtob(MEM->tx_head) >> 16);
-
-
- /* tell the lance the address of its init block */
- REGA(CSR1) = dvma_vtob(&(MEM->init));
- REGA(CSR2) = dvma_vtob(&(MEM->init)) >> 16;
-
-#ifdef CONFIG_SUN3X
- REGA(CSR3) = CSR3_BSWP | CSR3_ACON | CSR3_BCON;
-#else
- REGA(CSR3) = CSR3_BSWP;
-#endif
-
-}
-
-
-static int lance_start_xmit( struct sk_buff *skb, struct net_device *dev )
-{
- struct lance_private *lp = netdev_priv(dev);
- int entry, len;
- struct lance_tx_head *head;
- unsigned long flags;
-
- DPRINTK( 1, ( "%s: transmit start.\n",
- dev->name));
-
- /* Transmitter timeout, serious problems. */
- if (netif_queue_stopped(dev)) {
- int tickssofar = jiffies - dev_trans_start(dev);
- if (tickssofar < HZ/5)
- return NETDEV_TX_BUSY;
-
- 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;
- dev->stats.tx_errors++;
-
- if(lance_debug >= 2) {
- int i;
- printk("Ring data: old_tx %d new_tx %d%s new_rx %d\n",
- lp->old_tx, lp->new_tx,
- lp->tx_full ? " (full)" : "",
- lp->new_rx );
- for( i = 0 ; i < RX_RING_SIZE; i++ )
- printk( "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++ )
- printk("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 );
- }
-
- lance_init_ring(dev);
- REGA( CSR0 ) = CSR0_INEA | CSR0_INIT | CSR0_STRT;
-
- netif_start_queue(dev);
-
- return NETDEV_TX_OK;
- }
-
-
- /* Block a timer-based transmit from overlapping. This could better be
- done with atomic_swap(1, dev->tbusy), but set_bit() works as well. */
-
- /* Block a timer-based transmit from overlapping with us by
- stopping the queue for a bit... */
-
- netif_stop_queue(dev);
-
- if (test_and_set_bit( 0, (void*)&lp->lock ) != 0) {
- printk( "%s: tx queue lock!.\n", dev->name);
- /* don't clear dev->tbusy flag. */
- return NETDEV_TX_BUSY;
- }
-
- AREG = CSR0;
- DPRINTK( 2, ( "%s: lance_start_xmit() called, csr0 %4.4x.\n",
- dev->name, DREG ));
-
-#ifdef CONFIG_SUN3X
- /* this weirdness doesn't appear on sun3... */
- if(!(DREG & CSR0_INIT)) {
- DPRINTK( 1, ("INIT not set, reinitializing...\n"));
- REGA( CSR0 ) = CSR0_STOP;
- lance_init_ring(dev);
- REGA( CSR0 ) = CSR0_INIT | CSR0_STRT;
- }
-#endif
-
- /* Fill in a Tx ring entry */
-#if 0
- if (lance_debug >= 2) {
- printk( "%s: TX pkt %d type 0x%04x"
- " from %s to %s"
- " data at 0x%08x len %d\n",
- dev->name, lp->new_tx, ((u_short *)skb->data)[6],
- DEV_ADDR(&skb->data[6]), DEV_ADDR(skb->data),
- (int)skb->data, (int)skb->len );
- }
-#endif
- /* 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... */
- local_irq_save(flags);
-
- /* Mask to ring buffer boundary. */
- entry = lp->new_tx;
- head = &(MEM->tx_head[entry]);
-
- /* Caution: the write order is important here, set the "ownership" bits
- * last.
- */
-
- /* the sun3's lance needs it's buffer padded to the minimum
- size */
- len = (ETH_ZLEN < skb->len) ? skb->len : ETH_ZLEN;
-
-// head->length = -len;
- head->length = (-len) | 0xf000;
- head->misc = 0;
-
- skb_copy_from_linear_data(skb, PKTBUF_ADDR(head), skb->len);
- if (len != skb->len)
- memset(PKTBUF_ADDR(head) + skb->len, 0, len-skb->len);
-
- head->flag = TMD1_OWN_CHIP | TMD1_ENP | TMD1_STP;
- lp->new_tx = (lp->new_tx + 1) & TX_RING_MOD_MASK;
- dev->stats.tx_bytes += skb->len;
-
- /* Trigger an immediate send poll. */
- REGA(CSR0) = CSR0_INEA | CSR0_TDMD | CSR0_STRT;
- AREG = CSR0;
- DPRINTK( 2, ( "%s: lance_start_xmit() exiting, csr0 %4.4x.\n",
- dev->name, DREG ));
- dev_kfree_skb(skb);
-
- lp->lock = 0;
- if ((MEM->tx_head[(entry+1) & TX_RING_MOD_MASK].flag & TMD1_OWN) ==
- TMD1_OWN_HOST)
- netif_start_queue(dev);
-
- local_irq_restore(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 = netdev_priv(dev);
- int csr0;
- static int in_interrupt;
-
- if (dev == NULL) {
- DPRINTK( 1, ( "lance_interrupt(): invalid dev_id\n" ));
- return IRQ_NONE;
- }
-
- if (in_interrupt)
- DPRINTK( 2, ( "%s: Re-entering the interrupt handler.\n", dev->name ));
- in_interrupt = 1;
-
- still_more:
- flush_cache_all();
-
- AREG = CSR0;
- csr0 = DREG;
-
- /* ack interrupts */
- DREG = csr0 & (CSR0_TINT | CSR0_RINT | CSR0_IDON);
-
- /* clear errors */
- if(csr0 & CSR0_ERR)
- DREG = CSR0_BABL | CSR0_MERR | CSR0_CERR | CSR0_MISS;
-
-
- DPRINTK( 2, ( "%s: interrupt csr0=%04x new csr=%04x.\n",
- dev->name, csr0, DREG ));
-
- if (csr0 & CSR0_TINT) { /* Tx-done interrupt */
- int old_tx = lp->old_tx;
-
-// if(lance_debug >= 3) {
-// int i;
-//
-// printk("%s: tx int\n", dev->name);
-//
-// for(i = 0; i < TX_RING_SIZE; i++)
-// printk("ring %d flag=%04x\n", i,
-// MEM->tx_head[i].flag);
-// }
-
- while( old_tx != lp->new_tx) {
- struct lance_tx_head *head = &(MEM->tx_head[old_tx]);
-
- DPRINTK(3, ("on tx_ring %d\n", old_tx));
-
- if (head->flag & TMD1_OWN_CHIP)
- break; /* It still hasn't been Txed */
-
- if (head->flag & TMD1_ERR) {
- int status = head->misc;
- dev->stats.tx_errors++;
- if (status & TMD3_RTRY) dev->stats.tx_aborted_errors++;
- if (status & TMD3_LCAR) dev->stats.tx_carrier_errors++;
- if (status & TMD3_LCOL) dev->stats.tx_window_errors++;
- if (status & (TMD3_UFLO | TMD3_BUFF)) {
- dev->stats.tx_fifo_errors++;
- printk("%s: Tx FIFO error\n",
- dev->name);
- REGA(CSR0) = CSR0_STOP;
- REGA(CSR3) = CSR3_BSWP;
- lance_init_ring(dev);
- REGA(CSR0) = CSR0_STRT | CSR0_INEA;
- return IRQ_HANDLED;
- }
- } else if(head->flag & (TMD1_ENP | TMD1_STP)) {
-
- head->flag &= ~(TMD1_ENP | TMD1_STP);
- if(head->flag & (TMD1_ONE | TMD1_MORE))
- dev->stats.collisions++;
-
- dev->stats.tx_packets++;
- DPRINTK(3, ("cleared tx ring %d\n", old_tx));
- }
- old_tx = (old_tx +1) & TX_RING_MOD_MASK;
- }
-
- lp->old_tx = old_tx;
- }
-
-
- if (netif_queue_stopped(dev)) {
- /* The ring is no longer full, clear tbusy. */
- netif_start_queue(dev);
- netif_wake_queue(dev);
- }
-
- if (csr0 & CSR0_RINT) /* Rx interrupt */
- lance_rx( dev );
-
- /* 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. */
- REGA(CSR0) = CSR0_STOP;
- REGA(CSR3) = CSR3_BSWP;
- lance_init_ring(dev);
- REGA(CSR0) = CSR0_STRT | CSR0_INEA;
- }
-
-
- /* Clear any other interrupt, and set interrupt enable. */
-// DREG = CSR0_BABL | CSR0_CERR | CSR0_MISS | CSR0_MERR |
-// CSR0_IDON | CSR0_INEA;
-
- REGA(CSR0) = CSR0_INEA;
-
- if(DREG & (CSR0_RINT | CSR0_TINT)) {
- DPRINTK(2, ("restarting interrupt, csr0=%#04x\n", DREG));
- goto still_more;
- }
-
- DPRINTK( 2, ( "%s: exiting interrupt, csr0=%#04x.\n",
- dev->name, DREG ));
- in_interrupt = 0;
- return IRQ_HANDLED;
-}
-
-/* get packet, toss into skbuff */
-static int lance_rx( struct net_device *dev )
-{
- struct lance_private *lp = netdev_priv(dev);
- int entry = lp->new_rx;
-
- /* 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;
- short pkt_len = (head->msg_length & 0xfff) - 4;
- 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 ));
-
- dev->stats.rx_dropped++;
- head->msg_length = 0;
- head->flag |= RMD1_OWN_CHIP;
- lp->new_rx = (lp->new_rx+1) &
- RX_RING_MOD_MASK;
- }
-
-#if 0
- if (lance_debug >= 3) {
- u_char *data = PKTBUF_ADDR(head);
- printk("%s: RX pkt %d type 0x%04x"
- " from %pM to %pM",
- dev->name, lp->new_tx, ((u_short *)data)[6],
- &data[6], data);
-
- printk(" data %02x %02x %02x %02x %02x %02x %02x %02x "
- "len %d at %08x\n",
- data[15], data[16], data[17], data[18],
- data[19], data[20], data[21], data[22],
- pkt_len, data);
- }
-#endif
- if (lance_debug >= 3) {
- u_char *data = PKTBUF_ADDR(head);
- printk( "%s: RX pkt %d type 0x%04x len %d\n ", dev->name, entry, ((u_short *)data)[6], pkt_len);
- }
-
-
- skb_reserve( skb, 2 ); /* 16 byte align */
- skb_put( skb, pkt_len ); /* Make room */
- skb_copy_to_linear_data(skb,
- 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->buf_length = -PKT_BUF_SZ | 0xf000;
- head->msg_length = 0;
- head->flag = RMD1_OWN_CHIP;
-
- entry = lp->new_rx = (lp->new_rx +1) & 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);
-
- 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.
- */
-
-/* completely untested on a sun3 */
-static void set_multicast_list( struct net_device *dev )
-{
- struct lance_private *lp = netdev_priv(dev);
-
- if(netif_queue_stopped(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( 3, ( "%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;
-
- /* Resume normal operation and reset AREG to CSR0 */
- REGA( CSR0 ) = CSR0_IDON | CSR0_INEA | CSR0_STRT;
-}
-
-
-#ifdef MODULE
-
-static struct net_device *sun3lance_dev;
-
-int __init init_module(void)
-{
- sun3lance_dev = sun3lance_probe(-1);
- if (IS_ERR(sun3lance_dev))
- return PTR_ERR(sun3lance_dev);
- return 0;
-}
-
-void __exit cleanup_module(void)
-{
- unregister_netdev(sun3lance_dev);
-#ifdef CONFIG_SUN3
- iounmap((void __iomem *)sun3lance_dev->base_addr);
-#endif
- free_netdev(sun3lance_dev);
-}
-
-#endif /* MODULE */
-