1/* 2 drivers/net/tulip/timer.c 3 4 Copyright 2000,2001 The Linux Kernel Team 5 Written/copyright 1994-2001 by Donald Becker. 6 7 This software may be used and distributed according to the terms 8 of the GNU General Public License, incorporated herein by reference. 9 10 Please refer to Documentation/DocBook/tulip-user.{pdf,ps,html} 11 for more information on this driver. 12 13 Please submit bugs to http://bugzilla.kernel.org/ . 14*/ 15 16 17#include "tulip.h" 18 19 20void tulip_media_task(struct work_struct *work) 21{ 22 struct tulip_private *tp = 23 container_of(work, struct tulip_private, media_work); 24 struct net_device *dev = tp->dev; 25 void __iomem *ioaddr = tp->base_addr; 26 u32 csr12 = ioread32(ioaddr + CSR12); 27 int next_tick = 2*HZ; 28 unsigned long flags; 29 30 if (tulip_debug > 2) { 31 printk(KERN_DEBUG "%s: Media selection tick, %s, status %08x mode %08x SIA %08x %08x %08x %08x\n", 32 dev->name, medianame[dev->if_port], 33 ioread32(ioaddr + CSR5), ioread32(ioaddr + CSR6), 34 csr12, ioread32(ioaddr + CSR13), 35 ioread32(ioaddr + CSR14), ioread32(ioaddr + CSR15)); 36 } 37 switch (tp->chip_id) { 38 case DC21140: 39 case DC21142: 40 case MX98713: 41 case COMPEX9881: 42 case DM910X: 43 default: { 44 struct medialeaf *mleaf; 45 unsigned char *p; 46 if (tp->mtable == NULL) { /* No EEPROM info, use generic code. */ 47 /* Not much that can be done. 48 Assume this a generic MII or SYM transceiver. */ 49 next_tick = 60*HZ; 50 if (tulip_debug > 2) 51 printk(KERN_DEBUG "%s: network media monitor CSR6 %08x CSR12 0x%02x\n", 52 dev->name, 53 ioread32(ioaddr + CSR6), csr12 & 0xff); 54 break; 55 } 56 mleaf = &tp->mtable->mleaf[tp->cur_index]; 57 p = mleaf->leafdata; 58 switch (mleaf->type) { 59 case 0: case 4: { 60 /* Type 0 serial or 4 SYM transceiver. Check the link beat bit. */ 61 int offset = mleaf->type == 4 ? 5 : 2; 62 s8 bitnum = p[offset]; 63 if (p[offset+1] & 0x80) { 64 if (tulip_debug > 1) 65 printk(KERN_DEBUG "%s: Transceiver monitor tick CSR12=%#02x, no media sense\n", 66 dev->name, csr12); 67 if (mleaf->type == 4) { 68 if (mleaf->media == 3 && (csr12 & 0x02)) 69 goto select_next_media; 70 } 71 break; 72 } 73 if (tulip_debug > 2) 74 printk(KERN_DEBUG "%s: Transceiver monitor tick: CSR12=%#02x bit %d is %d, expecting %d\n", 75 dev->name, csr12, (bitnum >> 1) & 7, 76 (csr12 & (1 << ((bitnum >> 1) & 7))) != 0, 77 (bitnum >= 0)); 78 /* Check that the specified bit has the proper value. */ 79 if ((bitnum < 0) != 80 ((csr12 & (1 << ((bitnum >> 1) & 7))) != 0)) { 81 if (tulip_debug > 2) 82 printk(KERN_DEBUG "%s: Link beat detected for %s\n", 83 dev->name, 84 medianame[mleaf->media & MEDIA_MASK]); 85 if ((p[2] & 0x61) == 0x01) /* Bogus Znyx board. */ 86 goto actually_mii; 87 netif_carrier_on(dev); 88 break; 89 } 90 netif_carrier_off(dev); 91 if (tp->medialock) 92 break; 93 select_next_media: 94 if (--tp->cur_index < 0) { 95 /* We start again, but should instead look for default. */ 96 tp->cur_index = tp->mtable->leafcount - 1; 97 } 98 dev->if_port = tp->mtable->mleaf[tp->cur_index].media; 99 if (tulip_media_cap[dev->if_port] & MediaIsFD) 100 goto select_next_media; /* Skip FD entries. */ 101 if (tulip_debug > 1) 102 printk(KERN_DEBUG "%s: No link beat on media %s, trying transceiver type %s\n", 103 dev->name, 104 medianame[mleaf->media & MEDIA_MASK], 105 medianame[tp->mtable->mleaf[tp->cur_index].media]); 106 tulip_select_media(dev, 0); 107 /* Restart the transmit process. */ 108 tulip_restart_rxtx(tp); 109 next_tick = (24*HZ)/10; 110 break; 111 } 112 case 1: case 3: /* 21140, 21142 MII */ 113 actually_mii: 114 if (tulip_check_duplex(dev) < 0) { 115 netif_carrier_off(dev); 116 next_tick = 3*HZ; 117 } else { 118 netif_carrier_on(dev); 119 next_tick = 60*HZ; 120 } 121 break; 122 case 2: /* 21142 serial block has no link beat. */ 123 default: 124 break; 125 } 126 } 127 break; 128 } 129 130 131 spin_lock_irqsave(&tp->lock, flags); 132 if (tp->timeout_recovery) { 133 tulip_tx_timeout_complete(tp, ioaddr); 134 tp->timeout_recovery = 0; 135 } 136 spin_unlock_irqrestore(&tp->lock, flags); 137 138 /* mod_timer synchronizes us with potential add_timer calls 139 * from interrupts. 140 */ 141 mod_timer(&tp->timer, RUN_AT(next_tick)); 142} 143 144 145void mxic_timer(unsigned long data) 146{ 147 struct net_device *dev = (struct net_device *)data; 148 struct tulip_private *tp = netdev_priv(dev); 149 void __iomem *ioaddr = tp->base_addr; 150 int next_tick = 60*HZ; 151 152 if (tulip_debug > 3) { 153 dev_info(&dev->dev, "MXIC negotiation status %08x\n", 154 ioread32(ioaddr + CSR12)); 155 } 156 if (next_tick) { 157 mod_timer(&tp->timer, RUN_AT(next_tick)); 158 } 159} 160 161 162void comet_timer(unsigned long data) 163{ 164 struct net_device *dev = (struct net_device *)data; 165 struct tulip_private *tp = netdev_priv(dev); 166 int next_tick = 60*HZ; 167 168 if (tulip_debug > 1) 169 printk(KERN_DEBUG "%s: Comet link status %04x partner capability %04x\n", 170 dev->name, 171 tulip_mdio_read(dev, tp->phys[0], 1), 172 tulip_mdio_read(dev, tp->phys[0], 5)); 173 /* mod_timer synchronizes us with potential add_timer calls 174 * from interrupts. 175 */ 176 if (tulip_check_duplex(dev) < 0) 177 { netif_carrier_off(dev); } 178 else 179 { netif_carrier_on(dev); } 180 mod_timer(&tp->timer, RUN_AT(next_tick)); 181} 182