1/* 2 drivers/net/tulip/timer.c 3 4 Maintained by Valerie Henson <val_henson@linux.intel.com> 5 Copyright 2000,2001 The Linux Kernel Team 6 Written/copyright 1994-2001 by Donald Becker. 7 8 This software may be used and distributed according to the terms 9 of the GNU General Public License, incorporated herein by reference. 10 11 Please refer to Documentation/DocBook/tulip-user.{pdf,ps,html} 12 for more information on this driver, or visit the project 13 Web page at http://sourceforge.net/projects/tulip/ 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 %8.8x mode" 32 " %8.8x SIA %8.8x %8.8x %8.8x %8.8x.\n", 33 dev->name, medianame[dev->if_port], ioread32(ioaddr + CSR5), 34 ioread32(ioaddr + CSR6), 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 %8.8x " 52 "CSR12 0x%2.2x.\n", 53 dev->name, 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 " 66 "CSR12=%#2.2x, no media sense.\n", 67 dev->name, csr12); 68 if (mleaf->type == 4) { 69 if (mleaf->media == 3 && (csr12 & 0x02)) 70 goto select_next_media; 71 } 72 break; 73 } 74 if (tulip_debug > 2) 75 printk(KERN_DEBUG "%s: Transceiver monitor tick: CSR12=%#2.2x" 76 " bit %d is %d, expecting %d.\n", 77 dev->name, csr12, (bitnum >> 1) & 7, 78 (csr12 & (1 << ((bitnum >> 1) & 7))) != 0, 79 (bitnum >= 0)); 80 /* Check that the specified bit has the proper value. */ 81 if ((bitnum < 0) != 82 ((csr12 & (1 << ((bitnum >> 1) & 7))) != 0)) { 83 if (tulip_debug > 2) 84 printk(KERN_DEBUG "%s: Link beat detected for %s.\n", dev->name, 85 medianame[mleaf->media & MEDIA_MASK]); 86 if ((p[2] & 0x61) == 0x01) /* Bogus Znyx board. */ 87 goto actually_mii; 88 netif_carrier_on(dev); 89 break; 90 } 91 netif_carrier_off(dev); 92 if (tp->medialock) 93 break; 94 select_next_media: 95 if (--tp->cur_index < 0) { 96 /* We start again, but should instead look for default. */ 97 tp->cur_index = tp->mtable->leafcount - 1; 98 } 99 dev->if_port = tp->mtable->mleaf[tp->cur_index].media; 100 if (tulip_media_cap[dev->if_port] & MediaIsFD) 101 goto select_next_media; /* Skip FD entries. */ 102 if (tulip_debug > 1) 103 printk(KERN_DEBUG "%s: No link beat on media %s," 104 " trying transceiver type %s.\n", 105 dev->name, medianame[mleaf->media & MEDIA_MASK], 106 medianame[tp->mtable->mleaf[tp->cur_index].media]); 107 tulip_select_media(dev, 0); 108 /* Restart the transmit process. */ 109 tulip_restart_rxtx(tp); 110 next_tick = (24*HZ)/10; 111 break; 112 } 113 case 1: case 3: /* 21140, 21142 MII */ 114 actually_mii: 115 if (tulip_check_duplex(dev) < 0) { 116 netif_carrier_off(dev); 117 next_tick = 3*HZ; 118 } else { 119 netif_carrier_on(dev); 120 next_tick = 60*HZ; 121 } 122 break; 123 case 2: /* 21142 serial block has no link beat. */ 124 default: 125 break; 126 } 127 } 128 break; 129 } 130 131 132 spin_lock_irqsave(&tp->lock, flags); 133 if (tp->timeout_recovery) { 134 tulip_tx_timeout_complete(tp, ioaddr); 135 tp->timeout_recovery = 0; 136 } 137 spin_unlock_irqrestore(&tp->lock, flags); 138 139 /* mod_timer synchronizes us with potential add_timer calls 140 * from interrupts. 141 */ 142 mod_timer(&tp->timer, RUN_AT(next_tick)); 143} 144 145 146void mxic_timer(unsigned long data) 147{ 148 struct net_device *dev = (struct net_device *)data; 149 struct tulip_private *tp = netdev_priv(dev); 150 void __iomem *ioaddr = tp->base_addr; 151 int next_tick = 60*HZ; 152 153 if (tulip_debug > 3) { 154 printk(KERN_INFO"%s: MXIC negotiation status %8.8x.\n", dev->name, 155 ioread32(ioaddr + CSR12)); 156 } 157 if (next_tick) { 158 mod_timer(&tp->timer, RUN_AT(next_tick)); 159 } 160} 161 162 163void comet_timer(unsigned long data) 164{ 165 struct net_device *dev = (struct net_device *)data; 166 struct tulip_private *tp = netdev_priv(dev); 167 int next_tick = 60*HZ; 168 169 if (tulip_debug > 1) 170 printk(KERN_DEBUG "%s: Comet link status %4.4x partner capability " 171 "%4.4x.\n", 172 dev->name, 173 tulip_mdio_read(dev, tp->phys[0], 1), 174 tulip_mdio_read(dev, tp->phys[0], 5)); 175 /* mod_timer synchronizes us with potential add_timer calls 176 * from interrupts. 177 */ 178 if (tulip_check_duplex(dev) < 0) 179 { netif_carrier_off(dev); } 180 else 181 { netif_carrier_on(dev); } 182 mod_timer(&tp->timer, RUN_AT(next_tick)); 183} 184