diff options
Diffstat (limited to 'drivers/net/sgiseeq.c')
| -rw-r--r-- | drivers/net/sgiseeq.c | 772 |
1 files changed, 0 insertions, 772 deletions
diff --git a/drivers/net/sgiseeq.c b/drivers/net/sgiseeq.c deleted file mode 100644 index a4614df38a9..00000000000 --- a/drivers/net/sgiseeq.c +++ /dev/null @@ -1,772 +0,0 @@ -/* - * sgiseeq.c: Seeq8003 ethernet driver for SGI machines. - * - * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com) - */ -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/errno.h> -#include <linux/init.h> -#include <linux/types.h> -#include <linux/interrupt.h> -#include <linux/ioport.h> -#include <linux/socket.h> -#include <linux/in.h> -#include <linux/route.h> -#include <linux/slab.h> -#include <linux/string.h> -#include <linux/delay.h> -#include <linux/netdevice.h> -#include <linux/etherdevice.h> -#include <linux/skbuff.h> -#include <linux/bitops.h> - -#include <asm/byteorder.h> -#include <asm/io.h> -#include <asm/system.h> -#include <asm/page.h> -#include <asm/pgtable.h> -#include <asm/sgi/hpc3.h> -#include <asm/sgi/ip22.h> -#include <asm/sgialib.h> - -#include "sgiseeq.h" - -static char *sgiseeqstr = "SGI Seeq8003"; - -/* - * If you want speed, you do something silly, it always has worked for me. So, - * with that in mind, I've decided to make this driver look completely like a - * stupid Lance from a driver architecture perspective. Only difference is that - * here our "ring buffer" looks and acts like a real Lance one does but is - * layed out like how the HPC DMA and the Seeq want it to. You'd be surprised - * how a stupid idea like this can pay off in performance, not to mention - * making this driver 2,000 times easier to write. ;-) - */ - -/* Tune these if we tend to run out often etc. */ -#define SEEQ_RX_BUFFERS 16 -#define SEEQ_TX_BUFFERS 16 - -#define PKT_BUF_SZ 1584 - -#define NEXT_RX(i) (((i) + 1) & (SEEQ_RX_BUFFERS - 1)) -#define NEXT_TX(i) (((i) + 1) & (SEEQ_TX_BUFFERS - 1)) -#define PREV_RX(i) (((i) - 1) & (SEEQ_RX_BUFFERS - 1)) -#define PREV_TX(i) (((i) - 1) & (SEEQ_TX_BUFFERS - 1)) - -#define TX_BUFFS_AVAIL(sp) ((sp->tx_old <= sp->tx_new) ? \ - sp->tx_old + (SEEQ_TX_BUFFERS - 1) - sp->tx_new : \ - sp->tx_old - sp->tx_new - 1) - -#define DEBUG - -struct sgiseeq_rx_desc { - volatile struct hpc_dma_desc rdma; - volatile signed int buf_vaddr; -}; - -struct sgiseeq_tx_desc { - volatile struct hpc_dma_desc tdma; - volatile signed int buf_vaddr; -}; - -/* - * Warning: This structure is layed out in a certain way because HPC dma - * descriptors must be 8-byte aligned. So don't touch this without - * some care. - */ -struct sgiseeq_init_block { /* Note the name ;-) */ - struct sgiseeq_rx_desc rxvector[SEEQ_RX_BUFFERS]; - struct sgiseeq_tx_desc txvector[SEEQ_TX_BUFFERS]; -}; - -struct sgiseeq_private { - struct sgiseeq_init_block *srings; - - /* Ptrs to the descriptors in uncached space. */ - struct sgiseeq_rx_desc *rx_desc; - struct sgiseeq_tx_desc *tx_desc; - - char *name; - struct hpc3_ethregs *hregs; - struct sgiseeq_regs *sregs; - - /* Ring entry counters. */ - unsigned int rx_new, tx_new; - unsigned int rx_old, tx_old; - - int is_edlc; - unsigned char control; - unsigned char mode; - - struct net_device_stats stats; - - struct net_device *next_module; - spinlock_t tx_lock; -}; - -/* A list of all installed seeq devices, for removing the driver module. */ -static struct net_device *root_sgiseeq_dev; - -static inline void hpc3_eth_reset(struct hpc3_ethregs *hregs) -{ - hregs->reset = HPC3_ERST_CRESET | HPC3_ERST_CLRIRQ; - udelay(20); - hregs->reset = 0; -} - -static inline void reset_hpc3_and_seeq(struct hpc3_ethregs *hregs, - struct sgiseeq_regs *sregs) -{ - hregs->rx_ctrl = hregs->tx_ctrl = 0; - hpc3_eth_reset(hregs); -} - -#define RSTAT_GO_BITS (SEEQ_RCMD_IGOOD | SEEQ_RCMD_IEOF | SEEQ_RCMD_ISHORT | \ - SEEQ_RCMD_IDRIB | SEEQ_RCMD_ICRC) - -static inline void seeq_go(struct sgiseeq_private *sp, - struct hpc3_ethregs *hregs, - struct sgiseeq_regs *sregs) -{ - sregs->rstat = sp->mode | RSTAT_GO_BITS; - hregs->rx_ctrl = HPC3_ERXCTRL_ACTIVE; -} - -static inline void __sgiseeq_set_mac_address(struct net_device *dev) -{ - struct sgiseeq_private *sp = netdev_priv(dev); - struct sgiseeq_regs *sregs = sp->sregs; - int i; - - sregs->tstat = SEEQ_TCMD_RB0; - for (i = 0; i < 6; i++) - sregs->rw.eth_addr[i] = dev->dev_addr[i]; -} - -static int sgiseeq_set_mac_address(struct net_device *dev, void *addr) -{ - struct sgiseeq_private *sp = netdev_priv(dev); - struct sockaddr *sa = addr; - - memcpy(dev->dev_addr, sa->sa_data, dev->addr_len); - - spin_lock_irq(&sp->tx_lock); - __sgiseeq_set_mac_address(dev); - spin_unlock_irq(&sp->tx_lock); - - return 0; -} - -#define TCNTINFO_INIT (HPCDMA_EOX | HPCDMA_ETXD) -#define RCNTCFG_INIT (HPCDMA_OWN | HPCDMA_EORP | HPCDMA_XIE) -#define RCNTINFO_INIT (RCNTCFG_INIT | (PKT_BUF_SZ & HPCDMA_BCNT)) - -static int seeq_init_ring(struct net_device *dev) -{ - struct sgiseeq_private *sp = netdev_priv(dev); - int i; - - netif_stop_queue(dev); - sp->rx_new = sp->tx_new = 0; - sp->rx_old = sp->tx_old = 0; - - __sgiseeq_set_mac_address(dev); - - /* Setup tx ring. */ - for(i = 0; i < SEEQ_TX_BUFFERS; i++) { - if (!sp->tx_desc[i].tdma.pbuf) { - unsigned long buffer; - - buffer = (unsigned long) kmalloc(PKT_BUF_SZ, GFP_KERNEL); - if (!buffer) - return -ENOMEM; - sp->tx_desc[i].buf_vaddr = CKSEG1ADDR(buffer); - sp->tx_desc[i].tdma.pbuf = CPHYSADDR(buffer); - } - sp->tx_desc[i].tdma.cntinfo = TCNTINFO_INIT; - } - - /* And now the rx ring. */ - for (i = 0; i < SEEQ_RX_BUFFERS; i++) { - if (!sp->rx_desc[i].rdma.pbuf) { - unsigned long buffer; - - buffer = (unsigned long) kmalloc(PKT_BUF_SZ, GFP_KERNEL); - if (!buffer) - return -ENOMEM; - sp->rx_desc[i].buf_vaddr = CKSEG1ADDR(buffer); - sp->rx_desc[i].rdma.pbuf = CPHYSADDR(buffer); - } - sp->rx_desc[i].rdma.cntinfo = RCNTINFO_INIT; - } - sp->rx_desc[i - 1].rdma.cntinfo |= HPCDMA_EOR; - return 0; -} - -#ifdef DEBUG -static struct sgiseeq_private *gpriv; -static struct net_device *gdev; - -void sgiseeq_dump_rings(void) -{ - static int once; - struct sgiseeq_rx_desc *r = gpriv->rx_desc; - struct sgiseeq_tx_desc *t = gpriv->tx_desc; - struct hpc3_ethregs *hregs = gpriv->hregs; - int i; - - if (once) - return; - once++; - printk("RING DUMP:\n"); - for (i = 0; i < SEEQ_RX_BUFFERS; i++) { - printk("RX [%d]: @(%p) [%08x,%08x,%08x] ", - i, (&r[i]), r[i].rdma.pbuf, r[i].rdma.cntinfo, - r[i].rdma.pnext); - i += 1; - printk("-- [%d]: @(%p) [%08x,%08x,%08x]\n", - i, (&r[i]), r[i].rdma.pbuf, r[i].rdma.cntinfo, - r[i].rdma.pnext); - } - for (i = 0; i < SEEQ_TX_BUFFERS; i++) { - printk("TX [%d]: @(%p) [%08x,%08x,%08x] ", - i, (&t[i]), t[i].tdma.pbuf, t[i].tdma.cntinfo, - t[i].tdma.pnext); - i += 1; - printk("-- [%d]: @(%p) [%08x,%08x,%08x]\n", - i, (&t[i]), t[i].tdma.pbuf, t[i].tdma.cntinfo, - t[i].tdma.pnext); - } - printk("INFO: [rx_new = %d rx_old=%d] [tx_new = %d tx_old = %d]\n", - gpriv->rx_new, gpriv->rx_old, gpriv->tx_new, gpriv->tx_old); - printk("RREGS: rx_cbptr[%08x] rx_ndptr[%08x] rx_ctrl[%08x]\n", - hregs->rx_cbptr, hregs->rx_ndptr, hregs->rx_ctrl); - printk("TREGS: tx_cbptr[%08x] tx_ndptr[%08x] tx_ctrl[%08x]\n", - hregs->tx_cbptr, hregs->tx_ndptr, hregs->tx_ctrl); -} -#endif - -#define TSTAT_INIT_SEEQ (SEEQ_TCMD_IPT|SEEQ_TCMD_I16|SEEQ_TCMD_IC|SEEQ_TCMD_IUF) -#define TSTAT_INIT_EDLC ((TSTAT_INIT_SEEQ) | SEEQ_TCMD_RB2) - -static int init_seeq(struct net_device *dev, struct sgiseeq_private *sp, - struct sgiseeq_regs *sregs) -{ - struct hpc3_ethregs *hregs = sp->hregs; - int err; - - reset_hpc3_and_seeq(hregs, sregs); - err = seeq_init_ring(dev); - if (err) - return err; - - /* Setup to field the proper interrupt types. */ - if (sp->is_edlc) { - sregs->tstat = TSTAT_INIT_EDLC; - sregs->rw.wregs.control = sp->control; - sregs->rw.wregs.frame_gap = 0; - } else { - sregs->tstat = TSTAT_INIT_SEEQ; - } - - hregs->rx_ndptr = CPHYSADDR(sp->rx_desc); - hregs->tx_ndptr = CPHYSADDR(sp->tx_desc); - - seeq_go(sp, hregs, sregs); - return 0; -} - -static inline void record_rx_errors(struct sgiseeq_private *sp, - unsigned char status) -{ - if (status & SEEQ_RSTAT_OVERF || - status & SEEQ_RSTAT_SFRAME) - sp->stats.rx_over_errors++; - if (status & SEEQ_RSTAT_CERROR) - sp->stats.rx_crc_errors++; - if (status & SEEQ_RSTAT_DERROR) - sp->stats.rx_frame_errors++; - if (status & SEEQ_RSTAT_REOF) - sp->stats.rx_errors++; -} - -static inline void rx_maybe_restart(struct sgiseeq_private *sp, - struct hpc3_ethregs *hregs, - struct sgiseeq_regs *sregs) -{ - if (!(hregs->rx_ctrl & HPC3_ERXCTRL_ACTIVE)) { - hregs->rx_ndptr = CPHYSADDR(sp->rx_desc + sp->rx_new); - seeq_go(sp, hregs, sregs); - } -} - -#define for_each_rx(rd, sp) for((rd) = &(sp)->rx_desc[(sp)->rx_new]; \ - !((rd)->rdma.cntinfo & HPCDMA_OWN); \ - (rd) = &(sp)->rx_desc[(sp)->rx_new]) - -static inline void sgiseeq_rx(struct net_device *dev, struct sgiseeq_private *sp, - struct hpc3_ethregs *hregs, - struct sgiseeq_regs *sregs) -{ - struct sgiseeq_rx_desc *rd; - struct sk_buff *skb = 0; - unsigned char pkt_status; - unsigned char *pkt_pointer = 0; - int len = 0; - unsigned int orig_end = PREV_RX(sp->rx_new); - - /* Service every received packet. */ - for_each_rx(rd, sp) { - len = PKT_BUF_SZ - (rd->rdma.cntinfo & HPCDMA_BCNT) - 3; - pkt_pointer = (unsigned char *)(long)rd->buf_vaddr; - pkt_status = pkt_pointer[len + 2]; - - if (pkt_status & SEEQ_RSTAT_FIG) { - /* Packet is OK. */ - skb = dev_alloc_skb(len + 2); - - if (skb) { - skb->dev = dev; - skb_reserve(skb, 2); - skb_put(skb, len); - - /* Copy out of kseg1 to avoid silly cache flush. */ - eth_copy_and_sum(skb, pkt_pointer + 2, len, 0); - skb->protocol = eth_type_trans(skb, dev); - - /* We don't want to receive our own packets */ - if (memcmp(eth_hdr(skb)->h_source, dev->dev_addr, ETH_ALEN)) { - netif_rx(skb); - dev->last_rx = jiffies; - sp->stats.rx_packets++; - sp->stats.rx_bytes += len; - } else { - /* Silently drop my own packets */ - dev_kfree_skb_irq(skb); - } - } else { - printk (KERN_NOTICE "%s: Memory squeeze, deferring packet.\n", - dev->name); - sp->stats.rx_dropped++; - } - } else { - record_rx_errors(sp, pkt_status); - } - - /* Return the entry to the ring pool. */ - rd->rdma.cntinfo = RCNTINFO_INIT; - sp->rx_new = NEXT_RX(sp->rx_new); - } - sp->rx_desc[orig_end].rdma.cntinfo &= ~(HPCDMA_EOR); - sp->rx_desc[PREV_RX(sp->rx_new)].rdma.cntinfo |= HPCDMA_EOR; - rx_maybe_restart(sp, hregs, sregs); -} - -static inline void tx_maybe_reset_collisions(struct sgiseeq_private *sp, - struct sgiseeq_regs *sregs) -{ - if (sp->is_edlc) { - sregs->rw.wregs.control = sp->control & ~(SEEQ_CTRL_XCNT); - sregs->rw.wregs.control = sp->control; - } -} - -static inline void kick_tx(struct sgiseeq_tx_desc *td, - struct hpc3_ethregs *hregs) -{ - /* If the HPC aint doin nothin, and there are more packets - * with ETXD cleared and XIU set we must make very certain - * that we restart the HPC else we risk locking up the - * adapter. The following code is only safe iff the HPCDMA - * is not active! - */ - while ((td->tdma.cntinfo & (HPCDMA_XIU | HPCDMA_ETXD)) == - (HPCDMA_XIU | HPCDMA_ETXD)) - td = (struct sgiseeq_tx_desc *)(long) CKSEG1ADDR(td->tdma.pnext); - if (td->tdma.cntinfo & HPCDMA_XIU) { - hregs->tx_ndptr = CPHYSADDR(td); - hregs->tx_ctrl = HPC3_ETXCTRL_ACTIVE; - } -} - -static inline void sgiseeq_tx(struct net_device *dev, struct sgiseeq_private *sp, - struct hpc3_ethregs *hregs, - struct sgiseeq_regs *sregs) -{ - struct sgiseeq_tx_desc *td; - unsigned long status = hregs->tx_ctrl; - int j; - - tx_maybe_reset_collisions(sp, sregs); - - if (!(status & (HPC3_ETXCTRL_ACTIVE | SEEQ_TSTAT_PTRANS))) { - /* Oops, HPC detected some sort of error. */ - if (status & SEEQ_TSTAT_R16) - sp->stats.tx_aborted_errors++; - if (status & SEEQ_TSTAT_UFLOW) - sp->stats.tx_fifo_errors++; - if (status & SEEQ_TSTAT_LCLS) - sp->stats.collisions++; - } - - /* Ack 'em... */ - for (j = sp->tx_old; j != sp->tx_new; j = NEXT_TX(j)) { - td = &sp->tx_desc[j]; - - if (!(td->tdma.cntinfo & (HPCDMA_XIU))) - break; - if (!(td->tdma.cntinfo & (HPCDMA_ETXD))) { - if (!(status & HPC3_ETXCTRL_ACTIVE)) { - hregs->tx_ndptr = CPHYSADDR(td); - hregs->tx_ctrl = HPC3_ETXCTRL_ACTIVE; - } - break; - } - sp->stats.tx_packets++; - sp->tx_old = NEXT_TX(sp->tx_old); - td->tdma.cntinfo &= ~(HPCDMA_XIU | HPCDMA_XIE); - td->tdma.cntinfo |= HPCDMA_EOX; - } -} - -static irqreturn_t sgiseeq_interrupt(int irq, void *dev_id, struct pt_regs *regs) -{ - struct net_device *dev = (struct net_device *) dev_id; - struct sgiseeq_private *sp = netdev_priv(dev); - struct hpc3_ethregs *hregs = sp->hregs; - struct sgiseeq_regs *sregs = sp->sregs; - - spin_lock(&sp->tx_lock); - - /* Ack the IRQ and set software state. */ - hregs->reset = HPC3_ERST_CLRIRQ; - - /* Always check for received packets. */ - sgiseeq_rx(dev, sp, hregs, sregs); - - /* Only check for tx acks if we have something queued. */ - if (sp->tx_old != sp->tx_new) - sgiseeq_tx(dev, sp, hregs, sregs); - - if ((TX_BUFFS_AVAIL(sp) > 0) && netif_queue_stopped(dev)) { - netif_wake_queue(dev); - } - spin_unlock(&sp->tx_lock); - - return IRQ_HANDLED; -} - -static int sgiseeq_open(struct net_device *dev) -{ - struct sgiseeq_private *sp = netdev_priv(dev); - struct sgiseeq_regs *sregs = sp->sregs; - unsigned int irq = dev->irq; - int err; - - if (request_irq(irq, sgiseeq_interrupt, 0, sgiseeqstr, dev)) { - printk(KERN_ERR "Seeq8003: Can't get irq %d\n", dev->irq); - err = -EAGAIN; - } - - err = init_seeq(dev, sp, sregs); - if (err) - goto out_free_irq; - - netif_start_queue(dev); - - return 0; - -out_free_irq: - free_irq(irq, dev); - - return err; -} - -static int sgiseeq_close(struct net_device *dev) -{ - struct sgiseeq_private *sp = netdev_priv(dev); - struct sgiseeq_regs *sregs = sp->sregs; - unsigned int irq = dev->irq; - - netif_stop_queue(dev); - - /* Shutdown the Seeq. */ - reset_hpc3_and_seeq(sp->hregs, sregs); - free_irq(irq, dev); - - return 0; -} - -static inline int sgiseeq_reset(struct net_device *dev) -{ - struct sgiseeq_private *sp = netdev_priv(dev); - struct sgiseeq_regs *sregs = sp->sregs; - int err; - - err = init_seeq(dev, sp, sregs); - if (err) - return err; - - dev->trans_start = jiffies; - netif_wake_queue(dev); - - return 0; -} - -void sgiseeq_my_reset(void) -{ - printk("RESET!\n"); - sgiseeq_reset(gdev); -} - -static int sgiseeq_start_xmit(struct sk_buff *skb, struct net_device *dev) -{ - struct sgiseeq_private *sp = netdev_priv(dev); - struct hpc3_ethregs *hregs = sp->hregs; - unsigned long flags; - struct sgiseeq_tx_desc *td; - int skblen, len, entry; - - spin_lock_irqsave(&sp->tx_lock, flags); - - /* Setup... */ - skblen = skb->len; - len = (skblen <= ETH_ZLEN) ? ETH_ZLEN : skblen; - sp->stats.tx_bytes += len; - entry = sp->tx_new; - td = &sp->tx_desc[entry]; - - /* Create entry. There are so many races with adding a new - * descriptor to the chain: - * 1) Assume that the HPC is off processing a DMA chain while - * we are changing all of the following. - * 2) Do no allow the HPC to look at a new descriptor until - * we have completely set up it's state. This means, do - * not clear HPCDMA_EOX in the current last descritptor - * until the one we are adding looks consistent and could - * be processes right now. - * 3) The tx interrupt code must notice when we've added a new - * entry and the HPC got to the end of the chain before we - * added this new entry and restarted it. - */ - memcpy((char *)(long)td->buf_vaddr, skb->data, skblen); - if (len != skblen) - memset((char *)(long)td->buf_vaddr + skb->len, 0, len-skblen); - td->tdma.cntinfo = (len & HPCDMA_BCNT) | - HPCDMA_XIU | HPCDMA_EOXP | HPCDMA_XIE | HPCDMA_EOX; - if (sp->tx_old != sp->tx_new) { - struct sgiseeq_tx_desc *backend; - - backend = &sp->tx_desc[PREV_TX(sp->tx_new)]; - backend->tdma.cntinfo &= ~HPCDMA_EOX; - } - sp->tx_new = NEXT_TX(sp->tx_new); /* Advance. */ - - /* Maybe kick the HPC back into motion. */ - if (!(hregs->tx_ctrl & HPC3_ETXCTRL_ACTIVE)) - kick_tx(&sp->tx_desc[sp->tx_old], hregs); - - dev->trans_start = jiffies; - dev_kfree_skb(skb); - - if (!TX_BUFFS_AVAIL(sp)) - netif_stop_queue(dev); - spin_unlock_irqrestore(&sp->tx_lock, flags); - - return 0; -} - -static void timeout(struct net_device *dev) -{ - printk(KERN_NOTICE "%s: transmit timed out, resetting\n", dev->name); - sgiseeq_reset(dev); - - dev->trans_start = jiffies; - netif_wake_queue(dev); -} - -static struct net_device_stats *sgiseeq_get_stats(struct net_device *dev) -{ - struct sgiseeq_private *sp = netdev_priv(dev); - - return &sp->stats; -} - -static void sgiseeq_set_multicast(struct net_device *dev) -{ - struct sgiseeq_private *sp = (struct sgiseeq_private *) dev->priv; - unsigned char oldmode = sp->mode; - - if(dev->flags & IFF_PROMISC) - sp->mode = SEEQ_RCMD_RANY; - else if ((dev->flags & IFF_ALLMULTI) || dev->mc_count) - sp->mode = SEEQ_RCMD_RBMCAST; - else - sp->mode = SEEQ_RCMD_RBCAST; - - /* XXX I know this sucks, but is there a better way to reprogram - * XXX the receiver? At least, this shouldn't happen too often. - */ - - if (oldmode != sp->mode) - sgiseeq_reset(dev); -} - -static inline void setup_tx_ring(struct sgiseeq_tx_desc *buf, int nbufs) -{ - int i = 0; - - while (i < (nbufs - 1)) { - buf[i].tdma.pnext = CPHYSADDR(buf + i + 1); - buf[i].tdma.pbuf = 0; - i++; - } - buf[i].tdma.pnext = CPHYSADDR(buf); -} - -static inline void setup_rx_ring(struct sgiseeq_rx_desc *buf, int nbufs) -{ - int i = 0; - - while (i < (nbufs - 1)) { - buf[i].rdma.pnext = CPHYSADDR(buf + i + 1); - buf[i].rdma.pbuf = 0; - i++; - } - buf[i].rdma.pbuf = 0; - buf[i].rdma.pnext = CPHYSADDR(buf); -} - -#define ALIGNED(x) ((((unsigned long)(x)) + 0xf) & ~(0xf)) - -static int sgiseeq_init(struct hpc3_regs* hpcregs, int irq) -{ - struct sgiseeq_init_block *sr; - struct sgiseeq_private *sp; - struct net_device *dev; - int err, i; - - dev = alloc_etherdev(sizeof (struct sgiseeq_private)); - if (!dev) { - printk(KERN_ERR "Sgiseeq: Etherdev alloc failed, aborting.\n"); - err = -ENOMEM; - goto err_out; - } - sp = netdev_priv(dev); - - /* Make private data page aligned */ - sr = (struct sgiseeq_init_block *) get_zeroed_page(GFP_KERNEL); - if (!sr) { - printk(KERN_ERR "Sgiseeq: Page alloc failed, aborting.\n"); - err = -ENOMEM; - goto err_out_free_dev; - } - sp->srings = sr; - -#define EADDR_NVOFS 250 - for (i = 0; i < 3; i++) { - unsigned short tmp = ip22_nvram_read(EADDR_NVOFS / 2 + i); - - dev->dev_addr[2 * i] = tmp >> 8; - dev->dev_addr[2 * i + 1] = tmp & 0xff; - } - -#ifdef DEBUG - gpriv = sp; - gdev = dev; -#endif - sp->sregs = (struct sgiseeq_regs *) &hpcregs->eth_ext[0]; - sp->hregs = &hpcregs->ethregs; - sp->name = sgiseeqstr; - sp->mode = SEEQ_RCMD_RBCAST; - - sp->rx_desc = (struct sgiseeq_rx_desc *) - CKSEG1ADDR(ALIGNED(&sp->srings->rxvector[0])); - dma_cache_wback_inv((unsigned long)&sp->srings->rxvector, - sizeof(sp->srings->rxvector)); - sp->tx_desc = (struct sgiseeq_tx_desc *) - CKSEG1ADDR(ALIGNED(&sp->srings->txvector[0])); - dma_cache_wback_inv((unsigned long)&sp->srings->txvector, - sizeof(sp->srings->txvector)); - - /* A couple calculations now, saves many cycles later. */ - setup_rx_ring(sp->rx_desc, SEEQ_RX_BUFFERS); - setup_tx_ring(sp->tx_desc, SEEQ_TX_BUFFERS); - - /* Setup PIO and DMA transfer timing */ - sp->hregs->pconfig = 0x161; - sp->hregs->dconfig = HPC3_EDCFG_FIRQ | HPC3_EDCFG_FEOP | - HPC3_EDCFG_FRXDC | HPC3_EDCFG_PTO | 0x026; - - /* Reset the chip. */ - hpc3_eth_reset(sp->hregs); - - sp->is_edlc = !(sp->sregs->rw.rregs.collision_tx[0] & 0xff); - if (sp->is_edlc) - sp->control = SEEQ_CTRL_XCNT | SEEQ_CTRL_ACCNT | - SEEQ_CTRL_SFLAG | SEEQ_CTRL_ESHORT | - SEEQ_CTRL_ENCARR; - - dev->open = sgiseeq_open; - dev->stop = sgiseeq_close; - dev->hard_start_xmit = sgiseeq_start_xmit; - dev->tx_timeout = timeout; - dev->watchdog_timeo = (200 * HZ) / 1000; - dev->get_stats = sgiseeq_get_stats; - dev->set_multicast_list = sgiseeq_set_multicast; - dev->set_mac_address = sgiseeq_set_mac_address; - dev->irq = irq; - - if (register_netdev(dev)) { - printk(KERN_ERR "Sgiseeq: Cannot register net device, " - "aborting.\n"); - err = -ENODEV; - goto err_out_free_page; - } - - printk(KERN_INFO "%s: %s ", dev->name, sgiseeqstr); - for (i = 0; i < 6; i++) - printk("%2.2x%c", dev->dev_addr[i], i == 5 ? '\n' : ':'); - - sp->next_module = root_sgiseeq_dev; - root_sgiseeq_dev = dev; - - return 0; - -err_out_free_page: - free_page((unsigned long) sp->srings); -err_out_free_dev: - kfree(dev); - -err_out: - return err; -} - -static int __init sgiseeq_probe(void) -{ - /* On board adapter on 1st HPC is always present */ - return sgiseeq_init(hpc3c0, SGI_ENET_IRQ); -} - -static void __exit sgiseeq_exit(void) -{ - struct net_device *next, *dev; - struct sgiseeq_private *sp; - - for (dev = root_sgiseeq_dev; dev; dev = next) { - sp = (struct sgiseeq_private *) netdev_priv(dev); - next = sp->next_module; - unregister_netdev(dev); - free_page((unsigned long) sp->srings); - free_netdev(dev); - } -} - -module_init(sgiseeq_probe); -module_exit(sgiseeq_exit); - -MODULE_DESCRIPTION("SGI Seeq 8003 driver"); -MODULE_AUTHOR("Linux/MIPS Mailing List <linux-mips@linux-mips.org>"); -MODULE_LICENSE("GPL"); |