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