1/* 2 drivers/net/ethernet/dec/tulip/21142.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 DC21143 manual "21143 PCI/CardBus 10/100Mb/s Ethernet LAN Controller 11 Hardware Reference Manual" is currently available at : 12 http://developer.intel.com/design/network/manuals/278074.htm 13 14 Please submit bugs to http://bugzilla.kernel.org/ . 15*/ 16 17#include <linux/delay.h> 18#include "tulip.h" 19 20 21static u16 t21142_csr13[] = { 0x0001, 0x0009, 0x0009, 0x0000, 0x0001, }; 22u16 t21142_csr14[] = { 0xFFFF, 0x0705, 0x0705, 0x0000, 0x7F3D, }; 23static u16 t21142_csr15[] = { 0x0008, 0x0006, 0x000E, 0x0008, 0x0008, }; 24 25 26/* Handle the 21143 uniquely: do autoselect with NWay, not the EEPROM list 27 of available transceivers. */ 28void t21142_media_task(struct work_struct *work) 29{ 30 struct tulip_private *tp = 31 container_of(work, struct tulip_private, media_work); 32 struct net_device *dev = tp->dev; 33 void __iomem *ioaddr = tp->base_addr; 34 int csr12 = ioread32(ioaddr + CSR12); 35 int next_tick = 60*HZ; 36 int new_csr6 = 0; 37 int csr14 = ioread32(ioaddr + CSR14); 38 39 /* CSR12[LS10,LS100] are not reliable during autonegotiation */ 40 if ((csr14 & 0x80) && (csr12 & 0x7000) != 0x5000) 41 csr12 |= 6; 42 if (tulip_debug > 2) 43 dev_info(&dev->dev, "21143 negotiation status %08x, %s\n", 44 csr12, medianame[dev->if_port]); 45 if (tulip_media_cap[dev->if_port] & MediaIsMII) { 46 if (tulip_check_duplex(dev) < 0) { 47 netif_carrier_off(dev); 48 next_tick = 3*HZ; 49 } else { 50 netif_carrier_on(dev); 51 next_tick = 60*HZ; 52 } 53 } else if (tp->nwayset) { 54 /* Don't screw up a negotiated session! */ 55 if (tulip_debug > 1) 56 dev_info(&dev->dev, 57 "Using NWay-set %s media, csr12 %08x\n", 58 medianame[dev->if_port], csr12); 59 } else if (tp->medialock) { 60 ; 61 } else if (dev->if_port == 3) { 62 if (csr12 & 2) { /* No 100mbps link beat, revert to 10mbps. */ 63 if (tulip_debug > 1) 64 dev_info(&dev->dev, 65 "No 21143 100baseTx link beat, %08x, trying NWay\n", 66 csr12); 67 t21142_start_nway(dev); 68 next_tick = 3*HZ; 69 } 70 } else if ((csr12 & 0x7000) != 0x5000) { 71 /* Negotiation failed. Search media types. */ 72 if (tulip_debug > 1) 73 dev_info(&dev->dev, 74 "21143 negotiation failed, status %08x\n", 75 csr12); 76 if (!(csr12 & 4)) { /* 10mbps link beat good. */ 77 new_csr6 = 0x82420000; 78 dev->if_port = 0; 79 iowrite32(0, ioaddr + CSR13); 80 iowrite32(0x0003FFFF, ioaddr + CSR14); 81 iowrite16(t21142_csr15[dev->if_port], ioaddr + CSR15); 82 iowrite32(t21142_csr13[dev->if_port], ioaddr + CSR13); 83 } else { 84 /* Select 100mbps port to check for link beat. */ 85 new_csr6 = 0x83860000; 86 dev->if_port = 3; 87 iowrite32(0, ioaddr + CSR13); 88 iowrite32(0x0003FFFF, ioaddr + CSR14); 89 iowrite16(8, ioaddr + CSR15); 90 iowrite32(1, ioaddr + CSR13); 91 } 92 if (tulip_debug > 1) 93 dev_info(&dev->dev, "Testing new 21143 media %s\n", 94 medianame[dev->if_port]); 95 if (new_csr6 != (tp->csr6 & ~0x00D5)) { 96 tp->csr6 &= 0x00D5; 97 tp->csr6 |= new_csr6; 98 iowrite32(0x0301, ioaddr + CSR12); 99 tulip_restart_rxtx(tp); 100 } 101 next_tick = 3*HZ; 102 } 103 104 /* mod_timer synchronizes us with potential add_timer calls 105 * from interrupts. 106 */ 107 mod_timer(&tp->timer, RUN_AT(next_tick)); 108} 109 110 111void t21142_start_nway(struct net_device *dev) 112{ 113 struct tulip_private *tp = netdev_priv(dev); 114 void __iomem *ioaddr = tp->base_addr; 115 int csr14 = ((tp->sym_advertise & 0x0780) << 9) | 116 ((tp->sym_advertise & 0x0020) << 1) | 0xffbf; 117 118 dev->if_port = 0; 119 tp->nway = tp->mediasense = 1; 120 tp->nwayset = tp->lpar = 0; 121 if (tulip_debug > 1) 122 netdev_dbg(dev, "Restarting 21143 autonegotiation, csr14=%08x\n", 123 csr14); 124 iowrite32(0x0001, ioaddr + CSR13); 125 udelay(100); 126 iowrite32(csr14, ioaddr + CSR14); 127 tp->csr6 = 0x82420000 | (tp->sym_advertise & 0x0040 ? FullDuplex : 0); 128 iowrite32(tp->csr6, ioaddr + CSR6); 129 if (tp->mtable && tp->mtable->csr15dir) { 130 iowrite32(tp->mtable->csr15dir, ioaddr + CSR15); 131 iowrite32(tp->mtable->csr15val, ioaddr + CSR15); 132 } else 133 iowrite16(0x0008, ioaddr + CSR15); 134 iowrite32(0x1301, ioaddr + CSR12); /* Trigger NWAY. */ 135} 136 137 138 139void t21142_lnk_change(struct net_device *dev, int csr5) 140{ 141 struct tulip_private *tp = netdev_priv(dev); 142 void __iomem *ioaddr = tp->base_addr; 143 int csr12 = ioread32(ioaddr + CSR12); 144 int csr14 = ioread32(ioaddr + CSR14); 145 146 /* CSR12[LS10,LS100] are not reliable during autonegotiation */ 147 if ((csr14 & 0x80) && (csr12 & 0x7000) != 0x5000) 148 csr12 |= 6; 149 if (tulip_debug > 1) 150 dev_info(&dev->dev, 151 "21143 link status interrupt %08x, CSR5 %x, %08x\n", 152 csr12, csr5, csr14); 153 154 /* If NWay finished and we have a negotiated partner capability. */ 155 if (tp->nway && !tp->nwayset && (csr12 & 0x7000) == 0x5000) { 156 int setup_done = 0; 157 int negotiated = tp->sym_advertise & (csr12 >> 16); 158 tp->lpar = csr12 >> 16; 159 tp->nwayset = 1; 160 /* If partner cannot negotiate, it is 10Mbps Half Duplex */ 161 if (!(csr12 & 0x8000)) dev->if_port = 0; 162 else if (negotiated & 0x0100) dev->if_port = 5; 163 else if (negotiated & 0x0080) dev->if_port = 3; 164 else if (negotiated & 0x0040) dev->if_port = 4; 165 else if (negotiated & 0x0020) dev->if_port = 0; 166 else { 167 tp->nwayset = 0; 168 if ((csr12 & 2) == 0 && (tp->sym_advertise & 0x0180)) 169 dev->if_port = 3; 170 } 171 tp->full_duplex = (tulip_media_cap[dev->if_port] & MediaAlwaysFD) ? 1:0; 172 173 if (tulip_debug > 1) { 174 if (tp->nwayset) 175 dev_info(&dev->dev, 176 "Switching to %s based on link negotiation %04x & %04x = %04x\n", 177 medianame[dev->if_port], 178 tp->sym_advertise, tp->lpar, 179 negotiated); 180 else 181 dev_info(&dev->dev, 182 "Autonegotiation failed, using %s, link beat status %04x\n", 183 medianame[dev->if_port], csr12); 184 } 185 186 if (tp->mtable) { 187 int i; 188 for (i = 0; i < tp->mtable->leafcount; i++) 189 if (tp->mtable->mleaf[i].media == dev->if_port) { 190 int startup = ! ((tp->chip_id == DC21143 && (tp->revision == 48 || tp->revision == 65))); 191 tp->cur_index = i; 192 tulip_select_media(dev, startup); 193 setup_done = 1; 194 break; 195 } 196 } 197 if ( ! setup_done) { 198 tp->csr6 = (dev->if_port & 1 ? 0x838E0000 : 0x82420000) | (tp->csr6 & 0x20ff); 199 if (tp->full_duplex) 200 tp->csr6 |= 0x0200; 201 iowrite32(1, ioaddr + CSR13); 202 } 203#if 0 /* Restart shouldn't be needed. */ 204 iowrite32(tp->csr6 | RxOn, ioaddr + CSR6); 205 if (tulip_debug > 2) 206 netdev_dbg(dev, " Restarting Tx and Rx, CSR5 is %08x\n", 207 ioread32(ioaddr + CSR5)); 208#endif 209 tulip_start_rxtx(tp); 210 if (tulip_debug > 2) 211 netdev_dbg(dev, " Setting CSR6 %08x/%x CSR12 %08x\n", 212 tp->csr6, ioread32(ioaddr + CSR6), 213 ioread32(ioaddr + CSR12)); 214 } else if ((tp->nwayset && (csr5 & 0x08000000) && 215 (dev->if_port == 3 || dev->if_port == 5) && 216 (csr12 & 2) == 2) || 217 (tp->nway && (csr5 & (TPLnkFail)))) { 218 /* Link blew? Maybe restart NWay. */ 219 del_timer_sync(&tp->timer); 220 t21142_start_nway(dev); 221 tp->timer.expires = RUN_AT(3*HZ); 222 add_timer(&tp->timer); 223 } else if (dev->if_port == 3 || dev->if_port == 5) { 224 if (tulip_debug > 1) 225 dev_info(&dev->dev, "21143 %s link beat %s\n", 226 medianame[dev->if_port], 227 (csr12 & 2) ? "failed" : "good"); 228 if ((csr12 & 2) && ! tp->medialock) { 229 del_timer_sync(&tp->timer); 230 t21142_start_nway(dev); 231 tp->timer.expires = RUN_AT(3*HZ); 232 add_timer(&tp->timer); 233 } else if (dev->if_port == 5) 234 iowrite32(csr14 & ~0x080, ioaddr + CSR14); 235 } else if (dev->if_port == 0 || dev->if_port == 4) { 236 if ((csr12 & 4) == 0) 237 dev_info(&dev->dev, "21143 10baseT link beat good\n"); 238 } else if (!(csr12 & 4)) { /* 10mbps link beat good. */ 239 if (tulip_debug) 240 dev_info(&dev->dev, "21143 10mbps sensed media\n"); 241 dev->if_port = 0; 242 } else if (tp->nwayset) { 243 if (tulip_debug) 244 dev_info(&dev->dev, "21143 using NWay-set %s, csr6 %08x\n", 245 medianame[dev->if_port], tp->csr6); 246 } else { /* 100mbps link beat good. */ 247 if (tulip_debug) 248 dev_info(&dev->dev, "21143 100baseTx sensed media\n"); 249 dev->if_port = 3; 250 tp->csr6 = 0x838E0000 | (tp->csr6 & 0x20ff); 251 iowrite32(0x0003FF7F, ioaddr + CSR14); 252 iowrite32(0x0301, ioaddr + CSR12); 253 tulip_restart_rxtx(tp); 254 } 255} 256 257 258