timer.c
上传用户:jlfgdled
上传日期:2013-04-10
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文件大小:6k
- /*
- drivers/net/tulip/timer.c
- Maintained by Jeff Garzik <jgarzik@mandrakesoft.com>
- Copyright 2000,2001 The Linux Kernel Team
- Written/copyright 1994-2001 by Donald Becker.
- This software may be used and distributed according to the terms
- of the GNU General Public License, incorporated herein by reference.
- Please refer to Documentation/DocBook/tulip.{pdf,ps,html}
- for more information on this driver, or visit the project
- Web page at http://sourceforge.net/projects/tulip/
- */
- #include "tulip.h"
- void tulip_timer(unsigned long data)
- {
- struct net_device *dev = (struct net_device *)data;
- struct tulip_private *tp = (struct tulip_private *)dev->priv;
- long ioaddr = dev->base_addr;
- u32 csr12 = inl(ioaddr + CSR12);
- int next_tick = 2*HZ;
- if (tulip_debug > 2) {
- printk(KERN_DEBUG "%s: Media selection tick, %s, status %8.8x mode"
- " %8.8x SIA %8.8x %8.8x %8.8x %8.8x.n",
- dev->name, medianame[dev->if_port], inl(ioaddr + CSR5),
- inl(ioaddr + CSR6), csr12, inl(ioaddr + CSR13),
- inl(ioaddr + CSR14), inl(ioaddr + CSR15));
- }
- switch (tp->chip_id) {
- case DC21040:
- if (!tp->medialock && csr12 & 0x0002) { /* Network error */
- printk(KERN_INFO "%s: No link beat found.n",
- dev->name);
- dev->if_port = (dev->if_port == 2 ? 0 : 2);
- tulip_select_media(dev, 0);
- dev->trans_start = jiffies;
- }
- break;
- case DC21041:
- if (tulip_debug > 2)
- printk(KERN_DEBUG "%s: 21041 media tick CSR12 %8.8x.n",
- dev->name, csr12);
- if (tp->medialock) break;
- switch (dev->if_port) {
- case 0: case 3: case 4:
- if (csr12 & 0x0004) { /*LnkFail */
- /* 10baseT is dead. Check for activity on alternate port. */
- tp->mediasense = 1;
- if (csr12 & 0x0200)
- dev->if_port = 2;
- else
- dev->if_port = 1;
- printk(KERN_INFO "%s: No 21041 10baseT link beat, Media switched to %s.n",
- dev->name, medianame[dev->if_port]);
- outl(0, ioaddr + CSR13); /* Reset */
- outl(t21041_csr14[dev->if_port], ioaddr + CSR14);
- outl(t21041_csr15[dev->if_port], ioaddr + CSR15);
- outl(t21041_csr13[dev->if_port], ioaddr + CSR13);
- next_tick = 10*HZ; /* 2.4 sec. */
- } else
- next_tick = 30*HZ;
- break;
- case 1: /* 10base2 */
- case 2: /* AUI */
- if (csr12 & 0x0100) {
- next_tick = (30*HZ); /* 30 sec. */
- tp->mediasense = 0;
- } else if ((csr12 & 0x0004) == 0) {
- printk(KERN_INFO "%s: 21041 media switched to 10baseT.n",
- dev->name);
- dev->if_port = 0;
- tulip_select_media(dev, 0);
- next_tick = (24*HZ)/10; /* 2.4 sec. */
- } else if (tp->mediasense || (csr12 & 0x0002)) {
- dev->if_port = 3 - dev->if_port; /* Swap ports. */
- tulip_select_media(dev, 0);
- next_tick = 20*HZ;
- } else {
- next_tick = 20*HZ;
- }
- break;
- }
- break;
- case DC21140:
- case DC21142:
- case MX98713:
- case COMPEX9881:
- case DM910X:
- default: {
- struct medialeaf *mleaf;
- unsigned char *p;
- if (tp->mtable == NULL) { /* No EEPROM info, use generic code. */
- /* Not much that can be done.
- Assume this a generic MII or SYM transceiver. */
- next_tick = 60*HZ;
- if (tulip_debug > 2)
- printk(KERN_DEBUG "%s: network media monitor CSR6 %8.8x "
- "CSR12 0x%2.2x.n",
- dev->name, inl(ioaddr + CSR6), csr12 & 0xff);
- break;
- }
- mleaf = &tp->mtable->mleaf[tp->cur_index];
- p = mleaf->leafdata;
- switch (mleaf->type) {
- case 0: case 4: {
- /* Type 0 serial or 4 SYM transceiver. Check the link beat bit. */
- int offset = mleaf->type == 4 ? 5 : 2;
- s8 bitnum = p[offset];
- if (p[offset+1] & 0x80) {
- if (tulip_debug > 1)
- printk(KERN_DEBUG"%s: Transceiver monitor tick "
- "CSR12=%#2.2x, no media sense.n",
- dev->name, csr12);
- if (mleaf->type == 4) {
- if (mleaf->media == 3 && (csr12 & 0x02))
- goto select_next_media;
- }
- break;
- }
- if (tulip_debug > 2)
- printk(KERN_DEBUG "%s: Transceiver monitor tick: CSR12=%#2.2x"
- " bit %d is %d, expecting %d.n",
- dev->name, csr12, (bitnum >> 1) & 7,
- (csr12 & (1 << ((bitnum >> 1) & 7))) != 0,
- (bitnum >= 0));
- /* Check that the specified bit has the proper value. */
- if ((bitnum < 0) !=
- ((csr12 & (1 << ((bitnum >> 1) & 7))) != 0)) {
- if (tulip_debug > 2)
- printk(KERN_DEBUG "%s: Link beat detected for %s.n", dev->name,
- medianame[mleaf->media & MEDIA_MASK]);
- if ((p[2] & 0x61) == 0x01) /* Bogus Znyx board. */
- goto actually_mii;
- /* netif_carrier_on(dev); */
- break;
- }
- /* netif_carrier_off(dev); */
- if (tp->medialock)
- break;
- select_next_media:
- if (--tp->cur_index < 0) {
- /* We start again, but should instead look for default. */
- tp->cur_index = tp->mtable->leafcount - 1;
- }
- dev->if_port = tp->mtable->mleaf[tp->cur_index].media;
- if (tulip_media_cap[dev->if_port] & MediaIsFD)
- goto select_next_media; /* Skip FD entries. */
- if (tulip_debug > 1)
- printk(KERN_DEBUG "%s: No link beat on media %s,"
- " trying transceiver type %s.n",
- dev->name, medianame[mleaf->media & MEDIA_MASK],
- medianame[tp->mtable->mleaf[tp->cur_index].media]);
- tulip_select_media(dev, 0);
- /* Restart the transmit process. */
- tulip_restart_rxtx(tp);
- next_tick = (24*HZ)/10;
- break;
- }
- case 1: case 3: /* 21140, 21142 MII */
- actually_mii:
- if (tulip_check_duplex(dev) < 0)
- { /* netif_carrier_off(dev); */ }
- else
- { /* netif_carrier_on(dev); */ }
- next_tick = 60*HZ;
- break;
- case 2: /* 21142 serial block has no link beat. */
- default:
- break;
- }
- }
- break;
- }
- /* mod_timer synchronizes us with potential add_timer calls
- * from interrupts.
- */
- mod_timer(&tp->timer, RUN_AT(next_tick));
- }
- void mxic_timer(unsigned long data)
- {
- struct net_device *dev = (struct net_device *)data;
- struct tulip_private *tp = (struct tulip_private *)dev->priv;
- long ioaddr = dev->base_addr;
- int next_tick = 60*HZ;
- if (tulip_debug > 3) {
- printk(KERN_INFO"%s: MXIC negotiation status %8.8x.n", dev->name,
- inl(ioaddr + CSR12));
- }
- if (next_tick) {
- mod_timer(&tp->timer, RUN_AT(next_tick));
- }
- }
- void comet_timer(unsigned long data)
- {
- struct net_device *dev = (struct net_device *)data;
- struct tulip_private *tp = (struct tulip_private *)dev->priv;
- long ioaddr = dev->base_addr;
- int next_tick = 60*HZ;
- if (tulip_debug > 1)
- printk(KERN_DEBUG "%s: Comet link status %4.4x partner capability "
- "%4.4x.n",
- dev->name, inl(ioaddr + 0xB8), inl(ioaddr + 0xC8));
- /* mod_timer synchronizes us with potential add_timer calls
- * from interrupts.
- */
- mod_timer(&tp->timer, RUN_AT(next_tick));
- }