From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- drivers/net/sunlance.c | 1614 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 1614 insertions(+) create mode 100644 drivers/net/sunlance.c (limited to 'drivers/net/sunlance.c') diff --git a/drivers/net/sunlance.c b/drivers/net/sunlance.c new file mode 100644 index 000000000000..62d464c7ef51 --- /dev/null +++ b/drivers/net/sunlance.c @@ -0,0 +1,1614 @@ +/* $Id: sunlance.c,v 1.112 2002/01/15 06:48:55 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:v2.02 24/Aug/03 Miguel de Icaza (miguel@nuclecu.unam.mx)\n"; + +static char lancestr[] = "LANCE"; + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include /* Used for the temporal inet entries and routing */ +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include /* Used by the checksum routines */ +#include +#include +#include +#include +#include /* For tpe-link-test? setting */ +#include + +/* 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 { + void __iomem *lregs; /* Lance RAP/RDP regs. */ + void __iomem *dregs; /* DMA controller regs. */ + struct lance_init_block __iomem *init_block_iomem; + struct lance_init_block *init_block_mem; + + 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 { void __iomem *__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 = netdev_priv(dev); + struct lance_init_block *ib = lp->init_block_mem; + 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 = netdev_priv(dev); + struct lance_init_block __iomem *ib = lp->init_block_iomem; + 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=%8.8x\n", 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 = netdev_priv(dev); + struct lance_init_block *ib = lp->init_block_mem; + 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 = netdev_priv(dev); + struct lance_init_block *ib = lp->init_block_mem; + int i, j; + + spin_lock(&lp->lock); + + j = lp->tx_old; + for (i = j; i != lp->tx_new; i = j) { + 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 %s\n", + 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, restarting\n", + 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, void __iomem *piobuf, int len) +{ + u16 *p16 = (u16 *) skb->data; + u32 *p32; + u8 *p8; + void __iomem *pbuf = piobuf; + + /* We know here that both src and dest are on a 16bit boundary. */ + *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 = netdev_priv(dev); + struct lance_init_block __iomem *ib = lp->init_block_iomem; + struct lance_rx_desc __iomem *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 = netdev_priv(dev); + struct lance_init_block __iomem *ib = lp->init_block_iomem; + int i, j; + + spin_lock(&lp->lock); + + j = lp->tx_old; + for (i = j; i != lp->tx_new; i = j) { + struct lance_tx_desc __iomem *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 %s\n", + 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, restarting\n", + 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 irqreturn_t lance_interrupt(int irq, void *dev_id, struct pt_regs *regs) +{ + struct net_device *dev = (struct net_device *)dev_id; + struct lance_private *lp = netdev_priv(dev); + 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 %06x\n", + dev->name, csr0, addr & 0xffffff); + } else { + printk(KERN_ERR "%s: Memory error, status %04x\n", + 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); + + return IRQ_HANDLED; +} + +/* 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; + int i, entry; + + entry = lp->tx_new & TX_RING_MOD_MASK; + if (lp->pio_buffer) { + struct lance_init_block __iomem *ib = lp->init_block_iomem; + u16 __iomem *packet = (u16 __iomem *) &(ib->tx_buf[entry][0]); + struct ethhdr __iomem *eth = (struct ethhdr __iomem *) packet; + 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 { + struct lance_init_block *ib = lp->init_block_mem; + u16 *packet = (u16 *) &(ib->tx_buf[entry][0]); + struct ethhdr *eth = (struct ethhdr *) packet; + 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; + +static int lance_open(struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + 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 %s\n", __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) { + struct lance_init_block __iomem *ib = lp->init_block_iomem; + sbus_writew(0, &ib->mode); + sbus_writel(0, &ib->filter[0]); + sbus_writel(0, &ib->filter[1]); + } else { + struct lance_init_block *ib = lp->init_block_mem; + 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 = netdev_priv(dev); + + 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 = netdev_priv(dev); + int status; + + STOP_LANCE(lp); + + /* On the 4m, reset the dma too */ + if (lp->dregs) { + u32 csr, addr; + + printk(KERN_ERR "resetting ledma\n"); + 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(void __iomem *dest, unsigned char *src, int len) +{ + void __iomem *piobuf = 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(void __iomem *dest, int len) +{ + void __iomem *piobuf = dest; + + if ((unsigned long)piobuf & 1) { + sbus_writeb(0, piobuf); + piobuf += 1; + len -= 1; + if (len == 0) + return; + } + if (len == 1) { + sbus_writeb(0, piobuf); + return; + } + if ((unsigned long)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 = netdev_priv(dev); + + printk(KERN_ERR "%s: transmit timed out, status %04x, reset\n", + 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 = netdev_priv(dev); + 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) { + struct lance_init_block __iomem *ib = lp->init_block_iomem; + 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 { + struct lance_init_block *ib = lp->init_block_mem; + 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 = netdev_priv(dev); + + return &lp->stats; +} + +/* taken from the depca driver */ +static void lance_load_multicast(struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + struct dev_mc_list *dmi = dev->mc_list; + char *addrs; + int i; + u32 crc; + u32 val; + + /* set all multicast bits */ + if (dev->flags & IFF_ALLMULTI) + val = ~0; + else + val = 0; + + if (lp->pio_buffer) { + struct lance_init_block __iomem *ib = lp->init_block_iomem; + sbus_writel(val, &ib->filter[0]); + sbus_writel(val, &ib->filter[1]); + } else { + struct lance_init_block *ib = lp->init_block_mem; + ib->filter [0] = val; + ib->filter [1] = val; + } + + if (dev->flags & IFF_ALLMULTI) + return; + + /* 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) { + struct lance_init_block __iomem *ib = lp->init_block_iomem; + u16 __iomem *mcast_table = (u16 __iomem *) &ib->filter; + u16 tmp = sbus_readw(&mcast_table[crc>>4]); + tmp |= 1 << (crc & 0xf); + sbus_writew(tmp, &mcast_table[crc>>4]); + } else { + struct lance_init_block *ib = lp->init_block_mem; + u16 *mcast_table = (u16 *) &ib->filter; + mcast_table [crc >> 4] |= 1 << (crc & 0xf); + } + } +} + +static void lance_set_multicast(struct net_device *dev) +{ + struct lance_private *lp = netdev_priv(dev); + struct lance_init_block *ib_mem = lp->init_block_mem; + struct lance_init_block __iomem *ib_iomem = lp->init_block_iomem; + 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_iomem->mode); + else + mode = ib_mem->mode; + if (dev->flags & IFF_PROMISC) { + mode |= LE_MO_PROM; + if (lp->pio_buffer) + sbus_writew(mode, &ib_iomem->mode); + else + ib_mem->mode = mode; + } else { + mode &= ~LE_MO_PROM; + if (lp->pio_buffer) + sbus_writew(mode, &ib_iomem->mode); + else + ib_mem->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_iomem) { + sbus_iounmap(lp->init_block_iomem, + sizeof(struct lance_init_block)); + } else if (lp->init_block_mem) { + sbus_free_consistent(lp->sdev, + sizeof(struct lance_init_block), + lp->init_block_mem, + lp->init_block_dvma); + } +} + +/* Ethtool support... */ +static void sparc_lance_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) +{ + struct lance_private *lp = netdev_priv(dev); + + strcpy(info->driver, "sunlance"); + strcpy(info->version, "2.02"); + sprintf(info->bus_info, "SBUS:%d", + lp->sdev->slot); +} + +static u32 sparc_lance_get_link(struct net_device *dev) +{ + /* We really do not keep track of this, but this + * is better than not reporting anything at all. + */ + return 1; +} + +static struct ethtool_ops sparc_lance_ethtool_ops = { + .get_drvinfo = sparc_lance_get_drvinfo, + .get_link = sparc_lance_get_link, +}; + +static int __init sparc_lance_init(struct sbus_dev *sdev, + struct sbus_dma *ledma, + struct sbus_dev *lebuffer) +{ + static unsigned version_printed; + struct net_device *dev; + struct lance_private *lp; + int i; + + dev = alloc_etherdev(sizeof(struct lance_private) + 8); + if (!dev) + return -ENOMEM; + + lp = netdev_priv(dev); + memset(lp, 0, sizeof(*lp)); + + if (sparc_lance_debug && version_printed++ == 0) + printk (KERN_INFO "%s", version); + + 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++) + dev->dev_addr[i] = idprom->id_ethaddr[i]; + + /* Get the IO region */ + lp->lregs = sbus_ioremap(&sdev->resource[0], 0, + LANCE_REG_SIZE, lancestr); + if (!lp->lregs) { + printk(KERN_ERR "SunLance: Cannot map registers.\n"); + goto fail; + } + + lp->sdev = sdev; + if (lebuffer) { + /* sanity check */ + if (lebuffer->resource[0].start & 7) { + printk(KERN_ERR "SunLance: ERROR: Rx and Tx rings not on even boundary.\n"); + goto fail; + } + lp->init_block_iomem = + sbus_ioremap(&lebuffer->resource[0], 0, + sizeof(struct lance_init_block), "lebuffer"); + if (!lp->init_block_iomem) { + printk(KERN_ERR "SunLance: Cannot map PIO buffer.\n"); + 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_mem = + sbus_alloc_consistent(sdev, sizeof(struct lance_init_block), + &lp->init_block_dvma); + if (!lp->init_block_mem || lp->init_block_dvma == 0) { + printk(KERN_ERR "SunLance: Cannot allocate consistent DMA memory.\n"); + 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 "SunLance: using auto-carrier-detection.\n"); + + /* 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 "SunLance: warning: overriding option " + "'tpe-link-test?'\n"); + printk(KERN_NOTICE "SunLance: warning: mail any problems " + "to ecd@skynet.be\n"); + auxio_set_lte(AUXIO_LTE_ON); + } +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 = NULL; + + 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->ethtool_ops = &sparc_lance_ethtool_ops; + + dev->irq = sdev->irqs[0]; + + dev->dma = 0; + + /* 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; + + if (register_netdev(dev)) { + printk(KERN_ERR "SunLance: Cannot register device.\n"); + goto fail; + } + + lp->next_module = root_lance_dev; + root_lance_dev = lp; + + printk(KERN_INFO "%s: LANCE ", dev->name); + + for (i = 0; i < 6; i++) + printk("%2.2x%c", dev->dev_addr[i], + i == 5 ? ' ': ':'); + printk("\n"); + + return 0; + +fail: + lance_free_hwresources(lp); + free_netdev(dev); + 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 +#include + +/* 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(&sdev, NULL, NULL); + } + 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 = NULL; + struct sbus_dma *ledma = NULL; + 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 (strcmp(sdev->prom_name, "le") == 0) { + cards++; + if ((v = sparc_lance_init(sdev, NULL, NULL))) + return v; + continue; + } + if (strcmp(sdev->prom_name, "ledma") == 0) { + cards++; + ledma = find_ledma(sdev); + if ((v = sparc_lance_init(sdev->child, + ledma, NULL))) + return v; + continue; + } + if (strcmp(sdev->prom_name, "lebuffer") == 0){ + cards++; + if ((v = sparc_lance_init(sdev->child, + NULL, 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); + free_netdev(root_lance_dev->dev); + root_lance_dev = lp; + } +} + +module_init(sparc_lance_probe); +module_exit(sparc_lance_cleanup); +MODULE_LICENSE("GPL"); -- cgit v1.2.3-59-g8ed1b