sunlance.c
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- /* $Id: sunlance.c,v 1.109.2.1 2002/01/14 10:07:56 davem Exp $
- * lance.c: Linux/Sparc/Lance driver
- *
- * Written 1995, 1996 by Miguel de Icaza
- * Sources:
- * The Linux depca driver
- * The Linux lance driver.
- * The Linux skeleton driver.
- * The NetBSD Sparc/Lance driver.
- * Theo de Raadt (deraadt@openbsd.org)
- * NCR92C990 Lan Controller manual
- *
- * 1.4:
- * Added support to run with a ledma on the Sun4m
- *
- * 1.5:
- * Added multiple card detection.
- *
- * 4/17/96: Burst sizes and tpe selection on sun4m by Eddie C. Dost
- * (ecd@skynet.be)
- *
- * 5/15/96: auto carrier detection on sun4m by Eddie C. Dost
- * (ecd@skynet.be)
- *
- * 5/17/96: lebuffer on scsi/ether cards now work David S. Miller
- * (davem@caip.rutgers.edu)
- *
- * 5/29/96: override option 'tpe-link-test?', if it is 'false', as
- * this disables auto carrier detection on sun4m. Eddie C. Dost
- * (ecd@skynet.be)
- *
- * 1.7:
- * 6/26/96: Bug fix for multiple ledmas, miguel.
- *
- * 1.8:
- * Stole multicast code from depca.c, fixed lance_tx.
- *
- * 1.9:
- * 8/21/96: Fixed the multicast code (Pedro Roque)
- *
- * 8/28/96: Send fake packet in lance_open() if auto_select is true,
- * so we can detect the carrier loss condition in time.
- * Eddie C. Dost (ecd@skynet.be)
- *
- * 9/15/96: Align rx_buf so that eth_copy_and_sum() won't cause an
- * MNA trap during chksum_partial_copy(). (ecd@skynet.be)
- *
- * 11/17/96: Handle LE_C0_MERR in lance_interrupt(). (ecd@skynet.be)
- *
- * 12/22/96: Don't loop forever in lance_rx() on incomplete packets.
- * This was the sun4c killer. Shit, stupid bug.
- * (ecd@skynet.be)
- *
- * 1.10:
- * 1/26/97: Modularize driver. (ecd@skynet.be)
- *
- * 1.11:
- * 12/27/97: Added sun4d support. (jj@sunsite.mff.cuni.cz)
- *
- * 1.12:
- * 11/3/99: Fixed SMP race in lance_start_xmit found by davem.
- * Anton Blanchard (anton@progsoc.uts.edu.au)
- * 2.00: 11/9/99: Massive overhaul and port to new SBUS driver interfaces.
- * David S. Miller (davem@redhat.com)
- * 2.01:
- * 11/08/01: Use library crc32 functions (Matt_Domsch@dell.com)
- *
- */
- #undef DEBUG_DRIVER
- static char version[] =
- "sunlance.c:v2.01 08/Nov/01 Miguel de Icaza (miguel@nuclecu.unam.mx)n";
- static char lancestr[] = "LANCE";
- #include <linux/config.h>
- #include <linux/module.h>
- #include <linux/kernel.h>
- #include <linux/sched.h>
- #include <linux/types.h>
- #include <linux/fcntl.h>
- #include <linux/interrupt.h>
- #include <linux/ptrace.h>
- #include <linux/ioport.h>
- #include <linux/in.h>
- #include <linux/slab.h>
- #include <linux/string.h>
- #include <linux/delay.h>
- #include <linux/init.h>
- #include <linux/crc32.h>
- #include <asm/system.h>
- #include <asm/bitops.h>
- #include <asm/io.h>
- #include <asm/dma.h>
- #include <asm/pgtable.h>
- #include <linux/errno.h>
- #include <asm/byteorder.h> /* Used by the checksum routines */
- /* Used for the temporal inet entries and routing */
- #include <linux/socket.h>
- #include <linux/route.h>
- #include <asm/idprom.h>
- #include <asm/sbus.h>
- #include <asm/openprom.h>
- #include <asm/oplib.h>
- #include <asm/auxio.h> /* For tpe-link-test? setting */
- #include <asm/irq.h>
- #include <linux/netdevice.h>
- #include <linux/etherdevice.h>
- #include <linux/skbuff.h>
- /* Define: 2^4 Tx buffers and 2^4 Rx buffers */
- #ifndef LANCE_LOG_TX_BUFFERS
- #define LANCE_LOG_TX_BUFFERS 4
- #define LANCE_LOG_RX_BUFFERS 4
- #endif
- #define LE_CSR0 0
- #define LE_CSR1 1
- #define LE_CSR2 2
- #define LE_CSR3 3
- #define LE_MO_PROM 0x8000 /* Enable promiscuous mode */
- #define LE_C0_ERR 0x8000 /* Error: set if BAB, SQE, MISS or ME is set */
- #define LE_C0_BABL 0x4000 /* BAB: Babble: tx timeout. */
- #define LE_C0_CERR 0x2000 /* SQE: Signal quality error */
- #define LE_C0_MISS 0x1000 /* MISS: Missed a packet */
- #define LE_C0_MERR 0x0800 /* ME: Memory error */
- #define LE_C0_RINT 0x0400 /* Received interrupt */
- #define LE_C0_TINT 0x0200 /* Transmitter Interrupt */
- #define LE_C0_IDON 0x0100 /* IFIN: Init finished. */
- #define LE_C0_INTR 0x0080 /* Interrupt or error */
- #define LE_C0_INEA 0x0040 /* Interrupt enable */
- #define LE_C0_RXON 0x0020 /* Receiver on */
- #define LE_C0_TXON 0x0010 /* Transmitter on */
- #define LE_C0_TDMD 0x0008 /* Transmitter demand */
- #define LE_C0_STOP 0x0004 /* Stop the card */
- #define LE_C0_STRT 0x0002 /* Start the card */
- #define LE_C0_INIT 0x0001 /* Init the card */
- #define LE_C3_BSWP 0x4 /* SWAP */
- #define LE_C3_ACON 0x2 /* ALE Control */
- #define LE_C3_BCON 0x1 /* Byte control */
- /* Receive message descriptor 1 */
- #define LE_R1_OWN 0x80 /* Who owns the entry */
- #define LE_R1_ERR 0x40 /* Error: if FRA, OFL, CRC or BUF is set */
- #define LE_R1_FRA 0x20 /* FRA: Frame error */
- #define LE_R1_OFL 0x10 /* OFL: Frame overflow */
- #define LE_R1_CRC 0x08 /* CRC error */
- #define LE_R1_BUF 0x04 /* BUF: Buffer error */
- #define LE_R1_SOP 0x02 /* Start of packet */
- #define LE_R1_EOP 0x01 /* End of packet */
- #define LE_R1_POK 0x03 /* Packet is complete: SOP + EOP */
- #define LE_T1_OWN 0x80 /* Lance owns the packet */
- #define LE_T1_ERR 0x40 /* Error summary */
- #define LE_T1_EMORE 0x10 /* Error: more than one retry needed */
- #define LE_T1_EONE 0x08 /* Error: one retry needed */
- #define LE_T1_EDEF 0x04 /* Error: deferred */
- #define LE_T1_SOP 0x02 /* Start of packet */
- #define LE_T1_EOP 0x01 /* End of packet */
- #define LE_T1_POK 0x03 /* Packet is complete: SOP + EOP */
- #define LE_T3_BUF 0x8000 /* Buffer error */
- #define LE_T3_UFL 0x4000 /* Error underflow */
- #define LE_T3_LCOL 0x1000 /* Error late collision */
- #define LE_T3_CLOS 0x0800 /* Error carrier loss */
- #define LE_T3_RTY 0x0400 /* Error retry */
- #define LE_T3_TDR 0x03ff /* Time Domain Reflectometry counter */
- #define TX_RING_SIZE (1 << (LANCE_LOG_TX_BUFFERS))
- #define TX_RING_MOD_MASK (TX_RING_SIZE - 1)
- #define TX_RING_LEN_BITS ((LANCE_LOG_TX_BUFFERS) << 29)
- #define TX_NEXT(__x) (((__x)+1) & TX_RING_MOD_MASK)
- #define RX_RING_SIZE (1 << (LANCE_LOG_RX_BUFFERS))
- #define RX_RING_MOD_MASK (RX_RING_SIZE - 1)
- #define RX_RING_LEN_BITS ((LANCE_LOG_RX_BUFFERS) << 29)
- #define RX_NEXT(__x) (((__x)+1) & RX_RING_MOD_MASK)
- #define PKT_BUF_SZ 1544
- #define RX_BUFF_SIZE PKT_BUF_SZ
- #define TX_BUFF_SIZE PKT_BUF_SZ
- struct lance_rx_desc {
- u16 rmd0; /* low address of packet */
- u8 rmd1_bits; /* descriptor bits */
- u8 rmd1_hadr; /* high address of packet */
- s16 length; /* This length is 2s complement (negative)!
- * Buffer length
- */
- u16 mblength; /* This is the actual number of bytes received */
- };
- struct lance_tx_desc {
- u16 tmd0; /* low address of packet */
- u8 tmd1_bits; /* descriptor bits */
- u8 tmd1_hadr; /* high address of packet */
- s16 length; /* Length is 2s complement (negative)! */
- u16 misc;
- };
-
- /* The LANCE initialization block, described in databook. */
- /* On the Sparc, this block should be on a DMA region */
- struct lance_init_block {
- u16 mode; /* Pre-set mode (reg. 15) */
- u8 phys_addr[6]; /* Physical ethernet address */
- u32 filter[2]; /* Multicast filter. */
- /* Receive and transmit ring base, along with extra bits. */
- u16 rx_ptr; /* receive descriptor addr */
- u16 rx_len; /* receive len and high addr */
- u16 tx_ptr; /* transmit descriptor addr */
- u16 tx_len; /* transmit len and high addr */
-
- /* The Tx and Rx ring entries must aligned on 8-byte boundaries. */
- struct lance_rx_desc brx_ring[RX_RING_SIZE];
- struct lance_tx_desc btx_ring[TX_RING_SIZE];
-
- u8 tx_buf [TX_RING_SIZE][TX_BUFF_SIZE];
- u8 pad[2]; /* align rx_buf for copy_and_sum(). */
- u8 rx_buf [RX_RING_SIZE][RX_BUFF_SIZE];
- };
- #define libdesc_offset(rt, elem)
- ((__u32)(((unsigned long)(&(((struct lance_init_block *)0)->rt[elem])))))
- #define libbuff_offset(rt, elem)
- ((__u32)(((unsigned long)(&(((struct lance_init_block *)0)->rt[elem][0])))))
- struct lance_private {
- unsigned long lregs; /* Lance RAP/RDP regs. */
- unsigned long dregs; /* DMA controller regs. */
- volatile struct lance_init_block *init_block;
-
- spinlock_t lock;
- int rx_new, tx_new;
- int rx_old, tx_old;
-
- struct net_device_stats stats;
- struct sbus_dma *ledma; /* If set this points to ledma */
- char tpe; /* cable-selection is TPE */
- char auto_select; /* cable-selection by carrier */
- char burst_sizes; /* ledma SBus burst sizes */
- char pio_buffer; /* init block in PIO space? */
- unsigned short busmaster_regval;
- void (*init_ring)(struct net_device *);
- void (*rx)(struct net_device *);
- void (*tx)(struct net_device *);
- char *name;
- dma_addr_t init_block_dvma;
- struct net_device *dev; /* Backpointer */
- struct lance_private *next_module;
- struct sbus_dev *sdev;
- struct timer_list multicast_timer;
- };
- #define TX_BUFFS_AVAIL ((lp->tx_old<=lp->tx_new)?
- lp->tx_old+TX_RING_MOD_MASK-lp->tx_new:
- lp->tx_old - lp->tx_new-1)
- /* Lance registers. */
- #define RDP 0x00UL /* register data port */
- #define RAP 0x02UL /* register address port */
- #define LANCE_REG_SIZE 0x04UL
- #define STOP_LANCE(__lp)
- do { unsigned long __base = (__lp)->lregs;
- sbus_writew(LE_CSR0, __base + RAP);
- sbus_writew(LE_C0_STOP, __base + RDP);
- } while (0)
- int sparc_lance_debug = 2;
- /* The Lance uses 24 bit addresses */
- /* On the Sun4c the DVMA will provide the remaining bytes for us */
- /* On the Sun4m we have to instruct the ledma to provide them */
- /* Even worse, on scsi/ether SBUS cards, the init block and the
- * transmit/receive buffers are addresses as offsets from absolute
- * zero on the lebuffer PIO area. -DaveM
- */
- #define LANCE_ADDR(x) ((long)(x) & ~0xff000000)
- static struct lance_private *root_lance_dev;
- /* Load the CSR registers */
- static void load_csrs(struct lance_private *lp)
- {
- u32 leptr;
- if (lp->pio_buffer)
- leptr = 0;
- else
- leptr = LANCE_ADDR(lp->init_block_dvma);
- sbus_writew(LE_CSR1, lp->lregs + RAP);
- sbus_writew(leptr & 0xffff, lp->lregs + RDP);
- sbus_writew(LE_CSR2, lp->lregs + RAP);
- sbus_writew(leptr >> 16, lp->lregs + RDP);
- sbus_writew(LE_CSR3, lp->lregs + RAP);
- sbus_writew(lp->busmaster_regval, lp->lregs + RDP);
- /* Point back to csr0 */
- sbus_writew(LE_CSR0, lp->lregs + RAP);
- }
- /* Setup the Lance Rx and Tx rings */
- static void lance_init_ring_dvma(struct net_device *dev)
- {
- struct lance_private *lp = (struct lance_private *) dev->priv;
- volatile struct lance_init_block *ib = lp->init_block;
- dma_addr_t aib = lp->init_block_dvma;
- __u32 leptr;
- int i;
-
- /* Lock out other processes while setting up hardware */
- netif_stop_queue(dev);
- lp->rx_new = lp->tx_new = 0;
- lp->rx_old = lp->tx_old = 0;
- /* Copy the ethernet address to the lance init block
- * Note that on the sparc you need to swap the ethernet address.
- */
- ib->phys_addr [0] = dev->dev_addr [1];
- ib->phys_addr [1] = dev->dev_addr [0];
- ib->phys_addr [2] = dev->dev_addr [3];
- ib->phys_addr [3] = dev->dev_addr [2];
- ib->phys_addr [4] = dev->dev_addr [5];
- ib->phys_addr [5] = dev->dev_addr [4];
- /* Setup the Tx ring entries */
- for (i = 0; i <= TX_RING_SIZE; i++) {
- leptr = LANCE_ADDR(aib + libbuff_offset(tx_buf, i));
- ib->btx_ring [i].tmd0 = leptr;
- ib->btx_ring [i].tmd1_hadr = leptr >> 16;
- ib->btx_ring [i].tmd1_bits = 0;
- ib->btx_ring [i].length = 0xf000; /* The ones required by tmd2 */
- ib->btx_ring [i].misc = 0;
- }
- /* Setup the Rx ring entries */
- for (i = 0; i < RX_RING_SIZE; i++) {
- leptr = LANCE_ADDR(aib + libbuff_offset(rx_buf, i));
- ib->brx_ring [i].rmd0 = leptr;
- ib->brx_ring [i].rmd1_hadr = leptr >> 16;
- ib->brx_ring [i].rmd1_bits = LE_R1_OWN;
- ib->brx_ring [i].length = -RX_BUFF_SIZE | 0xf000;
- ib->brx_ring [i].mblength = 0;
- }
- /* Setup the initialization block */
-
- /* Setup rx descriptor pointer */
- leptr = LANCE_ADDR(aib + libdesc_offset(brx_ring, 0));
- ib->rx_len = (LANCE_LOG_RX_BUFFERS << 13) | (leptr >> 16);
- ib->rx_ptr = leptr;
-
- /* Setup tx descriptor pointer */
- leptr = LANCE_ADDR(aib + libdesc_offset(btx_ring, 0));
- ib->tx_len = (LANCE_LOG_TX_BUFFERS << 13) | (leptr >> 16);
- ib->tx_ptr = leptr;
- }
- static void lance_init_ring_pio(struct net_device *dev)
- {
- struct lance_private *lp = (struct lance_private *) dev->priv;
- volatile struct lance_init_block *ib = lp->init_block;
- u32 leptr;
- int i;
-
- /* Lock out other processes while setting up hardware */
- netif_stop_queue(dev);
- lp->rx_new = lp->tx_new = 0;
- lp->rx_old = lp->tx_old = 0;
- /* Copy the ethernet address to the lance init block
- * Note that on the sparc you need to swap the ethernet address.
- */
- sbus_writeb(dev->dev_addr[1], &ib->phys_addr[0]);
- sbus_writeb(dev->dev_addr[0], &ib->phys_addr[1]);
- sbus_writeb(dev->dev_addr[3], &ib->phys_addr[2]);
- sbus_writeb(dev->dev_addr[2], &ib->phys_addr[3]);
- sbus_writeb(dev->dev_addr[5], &ib->phys_addr[4]);
- sbus_writeb(dev->dev_addr[4], &ib->phys_addr[5]);
- /* Setup the Tx ring entries */
- for (i = 0; i <= TX_RING_SIZE; i++) {
- leptr = libbuff_offset(tx_buf, i);
- sbus_writew(leptr, &ib->btx_ring [i].tmd0);
- sbus_writeb(leptr >> 16,&ib->btx_ring [i].tmd1_hadr);
- sbus_writeb(0, &ib->btx_ring [i].tmd1_bits);
- /* The ones required by tmd2 */
- sbus_writew(0xf000, &ib->btx_ring [i].length);
- sbus_writew(0, &ib->btx_ring [i].misc);
- }
- /* Setup the Rx ring entries */
- for (i = 0; i < RX_RING_SIZE; i++) {
- leptr = libbuff_offset(rx_buf, i);
- sbus_writew(leptr, &ib->brx_ring [i].rmd0);
- sbus_writeb(leptr >> 16,&ib->brx_ring [i].rmd1_hadr);
- sbus_writeb(LE_R1_OWN, &ib->brx_ring [i].rmd1_bits);
- sbus_writew(-RX_BUFF_SIZE|0xf000,
- &ib->brx_ring [i].length);
- sbus_writew(0, &ib->brx_ring [i].mblength);
- }
- /* Setup the initialization block */
-
- /* Setup rx descriptor pointer */
- leptr = libdesc_offset(brx_ring, 0);
- sbus_writew((LANCE_LOG_RX_BUFFERS << 13) | (leptr >> 16),
- &ib->rx_len);
- sbus_writew(leptr, &ib->rx_ptr);
-
- /* Setup tx descriptor pointer */
- leptr = libdesc_offset(btx_ring, 0);
- sbus_writew((LANCE_LOG_TX_BUFFERS << 13) | (leptr >> 16),
- &ib->tx_len);
- sbus_writew(leptr, &ib->tx_ptr);
- }
- static void init_restart_ledma(struct lance_private *lp)
- {
- u32 csr = sbus_readl(lp->dregs + DMA_CSR);
- if (!(csr & DMA_HNDL_ERROR)) {
- /* E-Cache draining */
- while (sbus_readl(lp->dregs + DMA_CSR) & DMA_FIFO_ISDRAIN)
- barrier();
- }
- csr = sbus_readl(lp->dregs + DMA_CSR);
- csr &= ~DMA_E_BURSTS;
- if (lp->burst_sizes & DMA_BURST32)
- csr |= DMA_E_BURST32;
- else
- csr |= DMA_E_BURST16;
- csr |= (DMA_DSBL_RD_DRN | DMA_DSBL_WR_INV | DMA_FIFO_INV);
- if (lp->tpe)
- csr |= DMA_EN_ENETAUI;
- else
- csr &= ~DMA_EN_ENETAUI;
- udelay(20);
- sbus_writel(csr, lp->dregs + DMA_CSR);
- udelay(200);
- }
- static int init_restart_lance(struct lance_private *lp)
- {
- u16 regval = 0;
- int i;
- if (lp->dregs)
- init_restart_ledma(lp);
- sbus_writew(LE_CSR0, lp->lregs + RAP);
- sbus_writew(LE_C0_INIT, lp->lregs + RDP);
- /* Wait for the lance to complete initialization */
- for (i = 0; i < 100; i++) {
- regval = sbus_readw(lp->lregs + RDP);
- if (regval & (LE_C0_ERR | LE_C0_IDON))
- break;
- barrier();
- }
- if (i == 100 || (regval & LE_C0_ERR)) {
- printk(KERN_ERR "LANCE unopened after %d ticks, csr0=%4.4x.n",
- i, regval);
- if (lp->dregs)
- printk("dcsr=%8.8xn", sbus_readl(lp->dregs + DMA_CSR));
- return -1;
- }
- /* Clear IDON by writing a "1", enable interrupts and start lance */
- sbus_writew(LE_C0_IDON, lp->lregs + RDP);
- sbus_writew(LE_C0_INEA | LE_C0_STRT, lp->lregs + RDP);
- if (lp->dregs) {
- u32 csr = sbus_readl(lp->dregs + DMA_CSR);
- csr |= DMA_INT_ENAB;
- sbus_writel(csr, lp->dregs + DMA_CSR);
- }
- return 0;
- }
- static void lance_rx_dvma(struct net_device *dev)
- {
- struct lance_private *lp = (struct lance_private *) dev->priv;
- volatile struct lance_init_block *ib = lp->init_block;
- volatile struct lance_rx_desc *rd;
- u8 bits;
- int len, entry = lp->rx_new;
- struct sk_buff *skb;
- for (rd = &ib->brx_ring [entry];
- !((bits = rd->rmd1_bits) & LE_R1_OWN);
- rd = &ib->brx_ring [entry]) {
- /* We got an incomplete frame? */
- if ((bits & LE_R1_POK) != LE_R1_POK) {
- lp->stats.rx_over_errors++;
- lp->stats.rx_errors++;
- } else if (bits & LE_R1_ERR) {
- /* Count only the end frame as a rx error,
- * not the beginning
- */
- if (bits & LE_R1_BUF) lp->stats.rx_fifo_errors++;
- if (bits & LE_R1_CRC) lp->stats.rx_crc_errors++;
- if (bits & LE_R1_OFL) lp->stats.rx_over_errors++;
- if (bits & LE_R1_FRA) lp->stats.rx_frame_errors++;
- if (bits & LE_R1_EOP) lp->stats.rx_errors++;
- } else {
- len = (rd->mblength & 0xfff) - 4;
- skb = dev_alloc_skb(len + 2);
- if (skb == NULL) {
- printk(KERN_INFO "%s: Memory squeeze, deferring packet.n",
- dev->name);
- lp->stats.rx_dropped++;
- rd->mblength = 0;
- rd->rmd1_bits = LE_R1_OWN;
- lp->rx_new = RX_NEXT(entry);
- return;
- }
-
- lp->stats.rx_bytes += len;
- skb->dev = dev;
- skb_reserve(skb, 2); /* 16 byte align */
- skb_put(skb, len); /* make room */
- eth_copy_and_sum(skb,
- (unsigned char *)&(ib->rx_buf [entry][0]),
- len, 0);
- skb->protocol = eth_type_trans(skb, dev);
- netif_rx(skb);
- dev->last_rx = jiffies;
- lp->stats.rx_packets++;
- }
- /* Return the packet to the pool */
- rd->mblength = 0;
- rd->rmd1_bits = LE_R1_OWN;
- entry = RX_NEXT(entry);
- }
- lp->rx_new = entry;
- }
- static void lance_tx_dvma(struct net_device *dev)
- {
- struct lance_private *lp = (struct lance_private *) dev->priv;
- volatile struct lance_init_block *ib = lp->init_block;
- int i, j;
- spin_lock(&lp->lock);
- j = lp->tx_old;
- for (i = j; i != lp->tx_new; i = j) {
- volatile struct lance_tx_desc *td = &ib->btx_ring [i];
- u8 bits = td->tmd1_bits;
- /* If we hit a packet not owned by us, stop */
- if (bits & LE_T1_OWN)
- break;
-
- if (bits & LE_T1_ERR) {
- u16 status = td->misc;
-
- lp->stats.tx_errors++;
- if (status & LE_T3_RTY) lp->stats.tx_aborted_errors++;
- if (status & LE_T3_LCOL) lp->stats.tx_window_errors++;
- if (status & LE_T3_CLOS) {
- lp->stats.tx_carrier_errors++;
- if (lp->auto_select) {
- lp->tpe = 1 - lp->tpe;
- printk(KERN_NOTICE "%s: Carrier Lost, trying %sn",
- dev->name, lp->tpe?"TPE":"AUI");
- STOP_LANCE(lp);
- lp->init_ring(dev);
- load_csrs(lp);
- init_restart_lance(lp);
- goto out;
- }
- }
- /* Buffer errors and underflows turn off the
- * transmitter, restart the adapter.
- */
- if (status & (LE_T3_BUF|LE_T3_UFL)) {
- lp->stats.tx_fifo_errors++;
- printk(KERN_ERR "%s: Tx: ERR_BUF|ERR_UFL, restartingn",
- dev->name);
- STOP_LANCE(lp);
- lp->init_ring(dev);
- load_csrs(lp);
- init_restart_lance(lp);
- goto out;
- }
- } else if ((bits & LE_T1_POK) == LE_T1_POK) {
- /*
- * So we don't count the packet more than once.
- */
- td->tmd1_bits = bits & ~(LE_T1_POK);
- /* One collision before packet was sent. */
- if (bits & LE_T1_EONE)
- lp->stats.collisions++;
- /* More than one collision, be optimistic. */
- if (bits & LE_T1_EMORE)
- lp->stats.collisions += 2;
- lp->stats.tx_packets++;
- }
-
- j = TX_NEXT(j);
- }
- lp->tx_old = j;
- out:
- if (netif_queue_stopped(dev) &&
- TX_BUFFS_AVAIL > 0)
- netif_wake_queue(dev);
- spin_unlock(&lp->lock);
- }
- static void lance_piocopy_to_skb(struct sk_buff *skb, volatile void *piobuf, int len)
- {
- u16 *p16 = (u16 *) skb->data;
- u32 *p32;
- u8 *p8;
- unsigned long pbuf = (unsigned long) piobuf;
- /* We know here that both src and dest are on a 16bit boundry. */
- *p16++ = sbus_readw(pbuf);
- p32 = (u32 *) p16;
- pbuf += 2;
- len -= 2;
- while (len >= 4) {
- *p32++ = sbus_readl(pbuf);
- pbuf += 4;
- len -= 4;
- }
- p8 = (u8 *) p32;
- if (len >= 2) {
- p16 = (u16 *) p32;
- *p16++ = sbus_readw(pbuf);
- pbuf += 2;
- len -= 2;
- p8 = (u8 *) p16;
- }
- if (len >= 1)
- *p8 = sbus_readb(pbuf);
- }
- static void lance_rx_pio(struct net_device *dev)
- {
- struct lance_private *lp = (struct lance_private *) dev->priv;
- volatile struct lance_init_block *ib = lp->init_block;
- volatile struct lance_rx_desc *rd;
- unsigned char bits;
- int len, entry;
- struct sk_buff *skb;
- entry = lp->rx_new;
- for (rd = &ib->brx_ring [entry];
- !((bits = sbus_readb(&rd->rmd1_bits)) & LE_R1_OWN);
- rd = &ib->brx_ring [entry]) {
- /* We got an incomplete frame? */
- if ((bits & LE_R1_POK) != LE_R1_POK) {
- lp->stats.rx_over_errors++;
- lp->stats.rx_errors++;
- } else if (bits & LE_R1_ERR) {
- /* Count only the end frame as a rx error,
- * not the beginning
- */
- if (bits & LE_R1_BUF) lp->stats.rx_fifo_errors++;
- if (bits & LE_R1_CRC) lp->stats.rx_crc_errors++;
- if (bits & LE_R1_OFL) lp->stats.rx_over_errors++;
- if (bits & LE_R1_FRA) lp->stats.rx_frame_errors++;
- if (bits & LE_R1_EOP) lp->stats.rx_errors++;
- } else {
- len = (sbus_readw(&rd->mblength) & 0xfff) - 4;
- skb = dev_alloc_skb(len + 2);
- if (skb == NULL) {
- printk(KERN_INFO "%s: Memory squeeze, deferring packet.n",
- dev->name);
- lp->stats.rx_dropped++;
- sbus_writew(0, &rd->mblength);
- sbus_writeb(LE_R1_OWN, &rd->rmd1_bits);
- lp->rx_new = RX_NEXT(entry);
- return;
- }
-
- lp->stats.rx_bytes += len;
- skb->dev = dev;
- skb_reserve (skb, 2); /* 16 byte align */
- skb_put(skb, len); /* make room */
- lance_piocopy_to_skb(skb, &(ib->rx_buf[entry][0]), len);
- skb->protocol = eth_type_trans(skb, dev);
- netif_rx(skb);
- dev->last_rx = jiffies;
- lp->stats.rx_packets++;
- }
- /* Return the packet to the pool */
- sbus_writew(0, &rd->mblength);
- sbus_writeb(LE_R1_OWN, &rd->rmd1_bits);
- entry = RX_NEXT(entry);
- }
- lp->rx_new = entry;
- }
- static void lance_tx_pio(struct net_device *dev)
- {
- struct lance_private *lp = (struct lance_private *) dev->priv;
- volatile struct lance_init_block *ib = lp->init_block;
- int i, j;
- spin_lock(&lp->lock);
- j = lp->tx_old;
- for (i = j; i != lp->tx_new; i = j) {
- volatile struct lance_tx_desc *td = &ib->btx_ring [i];
- u8 bits = sbus_readb(&td->tmd1_bits);
- /* If we hit a packet not owned by us, stop */
- if (bits & LE_T1_OWN)
- break;
-
- if (bits & LE_T1_ERR) {
- u16 status = sbus_readw(&td->misc);
-
- lp->stats.tx_errors++;
- if (status & LE_T3_RTY) lp->stats.tx_aborted_errors++;
- if (status & LE_T3_LCOL) lp->stats.tx_window_errors++;
- if (status & LE_T3_CLOS) {
- lp->stats.tx_carrier_errors++;
- if (lp->auto_select) {
- lp->tpe = 1 - lp->tpe;
- printk(KERN_NOTICE "%s: Carrier Lost, trying %sn",
- dev->name, lp->tpe?"TPE":"AUI");
- STOP_LANCE(lp);
- lp->init_ring(dev);
- load_csrs(lp);
- init_restart_lance(lp);
- goto out;
- }
- }
- /* Buffer errors and underflows turn off the
- * transmitter, restart the adapter.
- */
- if (status & (LE_T3_BUF|LE_T3_UFL)) {
- lp->stats.tx_fifo_errors++;
- printk(KERN_ERR "%s: Tx: ERR_BUF|ERR_UFL, restartingn",
- dev->name);
- STOP_LANCE(lp);
- lp->init_ring(dev);
- load_csrs(lp);
- init_restart_lance(lp);
- goto out;
- }
- } else if ((bits & LE_T1_POK) == LE_T1_POK) {
- /*
- * So we don't count the packet more than once.
- */
- sbus_writeb(bits & ~(LE_T1_POK), &td->tmd1_bits);
- /* One collision before packet was sent. */
- if (bits & LE_T1_EONE)
- lp->stats.collisions++;
- /* More than one collision, be optimistic. */
- if (bits & LE_T1_EMORE)
- lp->stats.collisions += 2;
- lp->stats.tx_packets++;
- }
-
- j = TX_NEXT(j);
- }
- lp->tx_old = j;
- if (netif_queue_stopped(dev) &&
- TX_BUFFS_AVAIL > 0)
- netif_wake_queue(dev);
- out:
- spin_unlock(&lp->lock);
- }
- static void lance_interrupt(int irq, void *dev_id, struct pt_regs *regs)
- {
- struct net_device *dev = (struct net_device *)dev_id;
- struct lance_private *lp = (struct lance_private *)dev->priv;
- int csr0;
-
- sbus_writew(LE_CSR0, lp->lregs + RAP);
- csr0 = sbus_readw(lp->lregs + RDP);
- /* Acknowledge all the interrupt sources ASAP */
- sbus_writew(csr0 & (LE_C0_INTR | LE_C0_TINT | LE_C0_RINT),
- lp->lregs + RDP);
-
- if ((csr0 & LE_C0_ERR) != 0) {
- /* Clear the error condition */
- sbus_writew((LE_C0_BABL | LE_C0_ERR | LE_C0_MISS |
- LE_C0_CERR | LE_C0_MERR),
- lp->lregs + RDP);
- }
-
- if (csr0 & LE_C0_RINT)
- lp->rx(dev);
-
- if (csr0 & LE_C0_TINT)
- lp->tx(dev);
-
- if (csr0 & LE_C0_BABL)
- lp->stats.tx_errors++;
- if (csr0 & LE_C0_MISS)
- lp->stats.rx_errors++;
- if (csr0 & LE_C0_MERR) {
- if (lp->dregs) {
- u32 addr = sbus_readl(lp->dregs + DMA_ADDR);
- printk(KERN_ERR "%s: Memory error, status %04x, addr %06xn",
- dev->name, csr0, addr & 0xffffff);
- } else {
- printk(KERN_ERR "%s: Memory error, status %04xn",
- dev->name, csr0);
- }
- sbus_writew(LE_C0_STOP, lp->lregs + RDP);
- if (lp->dregs) {
- u32 dma_csr = sbus_readl(lp->dregs + DMA_CSR);
- dma_csr |= DMA_FIFO_INV;
- sbus_writel(dma_csr, lp->dregs + DMA_CSR);
- }
- lp->init_ring(dev);
- load_csrs(lp);
- init_restart_lance(lp);
- netif_wake_queue(dev);
- }
- sbus_writew(LE_C0_INEA, lp->lregs + RDP);
- }
- /* Build a fake network packet and send it to ourselves. */
- static void build_fake_packet(struct lance_private *lp)
- {
- struct net_device *dev = lp->dev;
- volatile struct lance_init_block *ib = lp->init_block;
- u16 *packet;
- struct ethhdr *eth;
- int i, entry;
- entry = lp->tx_new & TX_RING_MOD_MASK;
- packet = (u16 *) &(ib->tx_buf[entry][0]);
- eth = (struct ethhdr *) packet;
- if (lp->pio_buffer) {
- for (i = 0; i < (ETH_ZLEN / sizeof(u16)); i++)
- sbus_writew(0, &packet[i]);
- for (i = 0; i < 6; i++) {
- sbus_writeb(dev->dev_addr[i], ð->h_dest[i]);
- sbus_writeb(dev->dev_addr[i], ð->h_source[i]);
- }
- sbus_writew((-ETH_ZLEN) | 0xf000, &ib->btx_ring[entry].length);
- sbus_writew(0, &ib->btx_ring[entry].misc);
- sbus_writeb(LE_T1_POK|LE_T1_OWN, &ib->btx_ring[entry].tmd1_bits);
- } else {
- memset(packet, 0, ETH_ZLEN);
- for (i = 0; i < 6; i++) {
- eth->h_dest[i] = dev->dev_addr[i];
- eth->h_source[i] = dev->dev_addr[i];
- }
- ib->btx_ring[entry].length = (-ETH_ZLEN) | 0xf000;
- ib->btx_ring[entry].misc = 0;
- ib->btx_ring[entry].tmd1_bits = (LE_T1_POK|LE_T1_OWN);
- }
- lp->tx_new = TX_NEXT(entry);
- }
- struct net_device *last_dev = 0;
- static int lance_open(struct net_device *dev)
- {
- struct lance_private *lp = (struct lance_private *)dev->priv;
- volatile struct lance_init_block *ib = lp->init_block;
- int status = 0;
- last_dev = dev;
- STOP_LANCE(lp);
- if (request_irq(dev->irq, &lance_interrupt, SA_SHIRQ,
- lancestr, (void *) dev)) {
- printk(KERN_ERR "Lance: Can't get irq %sn", __irq_itoa(dev->irq));
- return -EAGAIN;
- }
- /* On the 4m, setup the ledma to provide the upper bits for buffers */
- if (lp->dregs) {
- u32 regval = lp->init_block_dvma & 0xff000000;
- sbus_writel(regval, lp->dregs + DMA_TEST);
- }
- /* Set mode and clear multicast filter only at device open,
- * so that lance_init_ring() called at any error will not
- * forget multicast filters.
- *
- * BTW it is common bug in all lance drivers! --ANK
- */
- if (lp->pio_buffer) {
- sbus_writew(0, &ib->mode);
- sbus_writel(0, &ib->filter[0]);
- sbus_writel(0, &ib->filter[1]);
- } else {
- ib->mode = 0;
- ib->filter [0] = 0;
- ib->filter [1] = 0;
- }
- lp->init_ring(dev);
- load_csrs(lp);
- netif_start_queue(dev);
- status = init_restart_lance(lp);
- if (!status && lp->auto_select) {
- build_fake_packet(lp);
- sbus_writew(LE_C0_INEA | LE_C0_TDMD, lp->lregs + RDP);
- }
- return status;
- }
- static int lance_close(struct net_device *dev)
- {
- struct lance_private *lp = (struct lance_private *) dev->priv;
- netif_stop_queue(dev);
- del_timer_sync(&lp->multicast_timer);
- STOP_LANCE(lp);
- free_irq(dev->irq, (void *) dev);
- return 0;
- }
- static int lance_reset(struct net_device *dev)
- {
- struct lance_private *lp = (struct lance_private *) dev->priv;
- int status;
-
- STOP_LANCE(lp);
- /* On the 4m, reset the dma too */
- if (lp->dregs) {
- u32 csr, addr;
- printk(KERN_ERR "resetting ledman");
- csr = sbus_readl(lp->dregs + DMA_CSR);
- sbus_writel(csr | DMA_RST_ENET, lp->dregs + DMA_CSR);
- udelay(200);
- sbus_writel(csr & ~DMA_RST_ENET, lp->dregs + DMA_CSR);
- addr = lp->init_block_dvma & 0xff000000;
- sbus_writel(addr, lp->dregs + DMA_TEST);
- }
- lp->init_ring(dev);
- load_csrs(lp);
- dev->trans_start = jiffies;
- status = init_restart_lance(lp);
- return status;
- }
- static void lance_piocopy_from_skb(volatile void *dest, unsigned char *src, int len)
- {
- unsigned long piobuf = (unsigned long) dest;
- u32 *p32;
- u16 *p16;
- u8 *p8;
- switch ((unsigned long)src & 0x3) {
- case 0:
- p32 = (u32 *) src;
- while (len >= 4) {
- sbus_writel(*p32, piobuf);
- p32++;
- piobuf += 4;
- len -= 4;
- }
- src = (char *) p32;
- break;
- case 1:
- case 3:
- p8 = (u8 *) src;
- while (len >= 4) {
- u32 val;
- val = p8[0] << 24;
- val |= p8[1] << 16;
- val |= p8[2] << 8;
- val |= p8[3];
- sbus_writel(val, piobuf);
- p8 += 4;
- piobuf += 4;
- len -= 4;
- }
- src = (char *) p8;
- break;
- case 2:
- p16 = (u16 *) src;
- while (len >= 4) {
- u32 val = p16[0]<<16 | p16[1];
- sbus_writel(val, piobuf);
- p16 += 2;
- piobuf += 4;
- len -= 4;
- }
- src = (char *) p16;
- break;
- };
- if (len >= 2) {
- u16 val = src[0] << 8 | src[1];
- sbus_writew(val, piobuf);
- src += 2;
- piobuf += 2;
- len -= 2;
- }
- if (len >= 1)
- sbus_writeb(src[0], piobuf);
- }
- static void lance_piozero(volatile void *dest, int len)
- {
- unsigned long piobuf = (unsigned long) dest;
- if (piobuf & 1) {
- sbus_writeb(0, piobuf);
- piobuf += 1;
- len -= 1;
- if (len == 0)
- return;
- }
- if (len == 1) {
- sbus_writeb(0, piobuf);
- return;
- }
- if (piobuf & 2) {
- sbus_writew(0, piobuf);
- piobuf += 2;
- len -= 2;
- if (len == 0)
- return;
- }
- while (len >= 4) {
- sbus_writel(0, piobuf);
- piobuf += 4;
- len -= 4;
- }
- if (len >= 2) {
- sbus_writew(0, piobuf);
- piobuf += 2;
- len -= 2;
- }
- if (len >= 1)
- sbus_writeb(0, piobuf);
- }
- static void lance_tx_timeout(struct net_device *dev)
- {
- struct lance_private *lp = (struct lance_private *) dev->priv;
- printk(KERN_ERR "%s: transmit timed out, status %04x, resetn",
- dev->name, sbus_readw(lp->lregs + RDP));
- lance_reset(dev);
- netif_wake_queue(dev);
- }
- static int lance_start_xmit(struct sk_buff *skb, struct net_device *dev)
- {
- struct lance_private *lp = (struct lance_private *) dev->priv;
- volatile struct lance_init_block *ib = lp->init_block;
- int entry, skblen, len;
- skblen = skb->len;
- len = (skblen <= ETH_ZLEN) ? ETH_ZLEN : skblen;
- spin_lock_irq(&lp->lock);
- lp->stats.tx_bytes += len;
- entry = lp->tx_new & TX_RING_MOD_MASK;
- if (lp->pio_buffer) {
- sbus_writew((-len) | 0xf000, &ib->btx_ring[entry].length);
- sbus_writew(0, &ib->btx_ring[entry].misc);
- lance_piocopy_from_skb(&ib->tx_buf[entry][0], skb->data, skblen);
- if (len != skblen)
- lance_piozero(&ib->tx_buf[entry][skblen], len - skblen);
- sbus_writeb(LE_T1_POK | LE_T1_OWN, &ib->btx_ring[entry].tmd1_bits);
- } else {
- ib->btx_ring [entry].length = (-len) | 0xf000;
- ib->btx_ring [entry].misc = 0;
- memcpy((char *)&ib->tx_buf [entry][0], skb->data, skblen);
- if (len != skblen)
- memset((char *) &ib->tx_buf [entry][skblen], 0, len - skblen);
- ib->btx_ring [entry].tmd1_bits = (LE_T1_POK | LE_T1_OWN);
- }
- lp->tx_new = TX_NEXT(entry);
- if (TX_BUFFS_AVAIL <= 0)
- netif_stop_queue(dev);
- /* Kick the lance: transmit now */
- sbus_writew(LE_C0_INEA | LE_C0_TDMD, lp->lregs + RDP);
- /* Read back CSR to invalidate the E-Cache.
- * This is needed, because DMA_DSBL_WR_INV is set.
- */
- if (lp->dregs)
- sbus_readw(lp->lregs + RDP);
- spin_unlock_irq(&lp->lock);
- dev->trans_start = jiffies;
- dev_kfree_skb(skb);
-
- return 0;
- }
- static struct net_device_stats *lance_get_stats(struct net_device *dev)
- {
- struct lance_private *lp = (struct lance_private *) dev->priv;
- return &lp->stats;
- }
- /* taken from the depca driver */
- static void lance_load_multicast(struct net_device *dev)
- {
- struct lance_private *lp = (struct lance_private *) dev->priv;
- volatile struct lance_init_block *ib = lp->init_block;
- volatile u16 *mcast_table = (u16 *) &ib->filter;
- struct dev_mc_list *dmi = dev->mc_list;
- char *addrs;
- int i;
- u32 crc;
-
- /* set all multicast bits */
- if (dev->flags & IFF_ALLMULTI) {
- if (lp->pio_buffer) {
- sbus_writel(0xffffffff, &ib->filter[0]);
- sbus_writel(0xffffffff, &ib->filter[1]);
- } else {
- ib->filter [0] = 0xffffffff;
- ib->filter [1] = 0xffffffff;
- }
- return;
- }
- /* clear the multicast filter */
- if (lp->pio_buffer) {
- sbus_writel(0, &ib->filter[0]);
- sbus_writel(0, &ib->filter[1]);
- } else {
- ib->filter [0] = 0;
- ib->filter [1] = 0;
- }
- /* Add addresses */
- for (i = 0; i < dev->mc_count; i++) {
- addrs = dmi->dmi_addr;
- dmi = dmi->next;
- /* multicast address? */
- if (!(*addrs & 1))
- continue;
- crc = ether_crc_le(6, addrs);
- crc = crc >> 26;
- if (lp->pio_buffer) {
- u16 tmp = sbus_readw(&mcast_table[crc>>4]);
- tmp |= 1 << (crc & 0xf);
- sbus_writew(tmp, &mcast_table[crc>>4]);
- } else {
- mcast_table [crc >> 4] |= 1 << (crc & 0xf);
- }
- }
- }
- static void lance_set_multicast(struct net_device *dev)
- {
- struct lance_private *lp = (struct lance_private *) dev->priv;
- volatile struct lance_init_block *ib = lp->init_block;
- u16 mode;
- if (!netif_running(dev))
- return;
- if (lp->tx_old != lp->tx_new) {
- mod_timer(&lp->multicast_timer, jiffies + 4);
- netif_wake_queue(dev);
- return;
- }
- netif_stop_queue(dev);
- STOP_LANCE(lp);
- lp->init_ring(dev);
- if (lp->pio_buffer)
- mode = sbus_readw(&ib->mode);
- else
- mode = ib->mode;
- if (dev->flags & IFF_PROMISC) {
- mode |= LE_MO_PROM;
- if (lp->pio_buffer)
- sbus_writew(mode, &ib->mode);
- else
- ib->mode = mode;
- } else {
- mode &= ~LE_MO_PROM;
- if (lp->pio_buffer)
- sbus_writew(mode, &ib->mode);
- else
- ib->mode = mode;
- lance_load_multicast(dev);
- }
- load_csrs(lp);
- init_restart_lance(lp);
- netif_wake_queue(dev);
- }
- static void lance_set_multicast_retry(unsigned long _opaque)
- {
- struct net_device *dev = (struct net_device *) _opaque;
- lance_set_multicast(dev);
- }
- static void lance_free_hwresources(struct lance_private *lp)
- {
- if (lp->lregs)
- sbus_iounmap(lp->lregs, LANCE_REG_SIZE);
- if (lp->init_block != NULL) {
- if (lp->pio_buffer) {
- sbus_iounmap((unsigned long)lp->init_block,
- sizeof(struct lance_init_block));
- } else {
- sbus_free_consistent(lp->sdev,
- sizeof(struct lance_init_block),
- (void *)lp->init_block,
- lp->init_block_dvma);
- }
- }
- }
- static int __init sparc_lance_init(struct net_device *dev,
- struct sbus_dev *sdev,
- struct sbus_dma *ledma,
- struct sbus_dev *lebuffer)
- {
- static unsigned version_printed;
- struct lance_private *lp = NULL;
- int i;
- if (dev == NULL) {
- dev = init_etherdev (0, sizeof (struct lance_private) + 8);
- } else {
- dev->priv = kmalloc(sizeof (struct lance_private) + 8,
- GFP_KERNEL);
- if (dev->priv == NULL)
- return -ENOMEM;
- memset(dev->priv, 0, sizeof (struct lance_private) + 8);
- }
- if (sparc_lance_debug && version_printed++ == 0)
- printk (KERN_INFO "%s", version);
- printk(KERN_INFO "%s: LANCE ", dev->name);
- /* Make certain the data structures used by the LANCE are aligned. */
- dev->priv = (void *)(((unsigned long)dev->priv + 7) & ~7);
- lp = (struct lance_private *) dev->priv;
- spin_lock_init(&lp->lock);
- /* Copy the IDPROM ethernet address to the device structure, later we
- * will copy the address in the device structure to the lance
- * initialization block.
- */
- for (i = 0; i < 6; i++)
- printk("%2.2x%c", dev->dev_addr[i] = idprom->id_ethaddr[i],
- i == 5 ? ' ': ':');
- printk("n");
- /* Get the IO region */
- lp->lregs = sbus_ioremap(&sdev->resource[0], 0,
- LANCE_REG_SIZE, lancestr);
- if (lp->lregs == 0UL) {
- printk(KERN_ERR "%s: Cannot map SunLance registers.n",
- dev->name);
- goto fail;
- }
- lp->sdev = sdev;
- if (lebuffer) {
- lp->init_block = (volatile struct lance_init_block *)
- sbus_ioremap(&lebuffer->resource[0], 0,
- sizeof(struct lance_init_block), "lebuffer");
- if (lp->init_block == NULL) {
- printk(KERN_ERR "%s: Cannot map SunLance PIO buffer.n",
- dev->name);
- goto fail;
- }
- lp->init_block_dvma = 0;
- lp->pio_buffer = 1;
- lp->init_ring = lance_init_ring_pio;
- lp->rx = lance_rx_pio;
- lp->tx = lance_tx_pio;
- } else {
- lp->init_block = (volatile struct lance_init_block *)
- sbus_alloc_consistent(sdev, sizeof(struct lance_init_block),
- &lp->init_block_dvma);
- if (lp->init_block == NULL ||
- lp->init_block_dvma == 0) {
- printk(KERN_ERR "%s: Cannot allocate consistent DMA memory.n",
- dev->name);
- goto fail;
- }
- lp->pio_buffer = 0;
- lp->init_ring = lance_init_ring_dvma;
- lp->rx = lance_rx_dvma;
- lp->tx = lance_tx_dvma;
- }
- lp->busmaster_regval = prom_getintdefault(sdev->prom_node,
- "busmaster-regval",
- (LE_C3_BSWP | LE_C3_ACON |
- LE_C3_BCON));
- lp->name = lancestr;
- lp->ledma = ledma;
- lp->burst_sizes = 0;
- if (lp->ledma) {
- char prop[6];
- unsigned int sbmask;
- u32 csr;
- /* Find burst-size property for ledma */
- lp->burst_sizes = prom_getintdefault(ledma->sdev->prom_node,
- "burst-sizes", 0);
- /* ledma may be capable of fast bursts, but sbus may not. */
- sbmask = prom_getintdefault(ledma->sdev->bus->prom_node,
- "burst-sizes", DMA_BURSTBITS);
- lp->burst_sizes &= sbmask;
- /* Get the cable-selection property */
- memset(prop, 0, sizeof(prop));
- prom_getstring(ledma->sdev->prom_node, "cable-selection",
- prop, sizeof(prop));
- if (prop[0] == 0) {
- int topnd, nd;
- printk(KERN_INFO "%s: using auto-carrier-detection.n",
- dev->name);
- /* Is this found at /options .attributes in all
- * Prom versions? XXX
- */
- topnd = prom_getchild(prom_root_node);
- nd = prom_searchsiblings(topnd, "options");
- if (!nd)
- goto no_link_test;
- if (!prom_node_has_property(nd, "tpe-link-test?"))
- goto no_link_test;
- memset(prop, 0, sizeof(prop));
- prom_getstring(nd, "tpe-link-test?", prop,
- sizeof(prop));
- if (strcmp(prop, "true")) {
- printk(KERN_NOTICE "%s: warning: overriding option "
- "'tpe-link-test?'n", dev->name);
- printk(KERN_NOTICE "%s: warning: mail any problems "
- "to ecd@skynet.ben", dev->name);
- set_auxio(AUXIO_LINK_TEST, 0);
- }
- no_link_test:
- lp->auto_select = 1;
- lp->tpe = 0;
- } else if (!strcmp(prop, "aui")) {
- lp->auto_select = 0;
- lp->tpe = 0;
- } else {
- lp->auto_select = 0;
- lp->tpe = 1;
- }
- lp->dregs = ledma->regs;
- /* Reset ledma */
- csr = sbus_readl(lp->dregs + DMA_CSR);
- sbus_writel(csr | DMA_RST_ENET, lp->dregs + DMA_CSR);
- udelay(200);
- sbus_writel(csr & ~DMA_RST_ENET, lp->dregs + DMA_CSR);
- } else
- lp->dregs = 0;
- /* This should never happen. */
- if ((unsigned long)(lp->init_block->brx_ring) & 0x07) {
- printk(KERN_ERR "%s: ERROR: Rx and Tx rings not on even boundary.n",
- dev->name);
- goto fail;
- }
- lp->dev = dev;
- SET_MODULE_OWNER(dev);
- dev->open = &lance_open;
- dev->stop = &lance_close;
- dev->hard_start_xmit = &lance_start_xmit;
- dev->tx_timeout = &lance_tx_timeout;
- dev->watchdog_timeo = 5*HZ;
- dev->get_stats = &lance_get_stats;
- dev->set_multicast_list = &lance_set_multicast;
- dev->irq = sdev->irqs[0];
- dev->dma = 0;
- ether_setup(dev);
- /* We cannot sleep if the chip is busy during a
- * multicast list update event, because such events
- * can occur from interrupts (ex. IPv6). So we
- * use a timer to try again later when necessary. -DaveM
- */
- init_timer(&lp->multicast_timer);
- lp->multicast_timer.data = (unsigned long) dev;
- lp->multicast_timer.function = &lance_set_multicast_retry;
- dev->ifindex = dev_new_index();
- lp->next_module = root_lance_dev;
- root_lance_dev = lp;
- return 0;
- fail:
- if (lp != NULL)
- lance_free_hwresources(lp);
- return -ENODEV;
- }
- /* On 4m, find the associated dma for the lance chip */
- static inline struct sbus_dma *find_ledma(struct sbus_dev *sdev)
- {
- struct sbus_dma *p;
- for_each_dvma(p) {
- if (p->sdev == sdev)
- return p;
- }
- return NULL;
- }
- #ifdef CONFIG_SUN4
- #include <asm/sun4paddr.h>
- /* Find all the lance cards on the system and initialize them */
- static int __init sparc_lance_probe(void)
- {
- static struct sbus_dev sdev;
- static int called;
- root_lance_dev = NULL;
- if (called)
- return -ENODEV;
- called++;
- if ((idprom->id_machtype == (SM_SUN4|SM_4_330)) ||
- (idprom->id_machtype == (SM_SUN4|SM_4_470))) {
- memset(&sdev, 0, sizeof(sdev));
- sdev.reg_addrs[0].phys_addr = sun4_eth_physaddr;
- sdev.irqs[0] = 6;
- return sparc_lance_init(NULL, &sdev, 0, 0);
- }
- return -ENODEV;
- }
- #else /* !CONFIG_SUN4 */
- /* Find all the lance cards on the system and initialize them */
- static int __init sparc_lance_probe(void)
- {
- struct sbus_bus *bus;
- struct sbus_dev *sdev = 0;
- struct net_device *dev = NULL;
- struct sbus_dma *ledma = 0;
- static int called;
- int cards = 0, v;
- root_lance_dev = NULL;
- if (called)
- return -ENODEV;
- called++;
- for_each_sbus (bus) {
- for_each_sbusdev (sdev, bus) {
- if (cards)
- dev = NULL;
- if (strcmp(sdev->prom_name, "le") == 0) {
- cards++;
- if ((v = sparc_lance_init(dev, sdev, 0, 0)))
- return v;
- continue;
- }
- if (strcmp(sdev->prom_name, "ledma") == 0) {
- cards++;
- ledma = find_ledma(sdev);
- if ((v = sparc_lance_init(dev, sdev->child,
- ledma, 0)))
- return v;
- continue;
- }
- if (strcmp(sdev->prom_name, "lebuffer") == 0){
- cards++;
- if ((v = sparc_lance_init(dev, sdev->child,
- 0, sdev)))
- return v;
- continue;
- }
- } /* for each sbusdev */
- } /* for each sbus */
- if (!cards)
- return -ENODEV;
- return 0;
- }
- #endif /* !CONFIG_SUN4 */
- static void __exit sparc_lance_cleanup(void)
- {
- struct lance_private *lp;
- while (root_lance_dev) {
- lp = root_lance_dev->next_module;
- unregister_netdev(root_lance_dev->dev);
- lance_free_hwresources(root_lance_dev);
- kfree(root_lance_dev->dev);
- root_lance_dev = lp;
- }
- }
- module_init(sparc_lance_probe);
- module_exit(sparc_lance_cleanup);
- MODULE_LICENSE("GPL");