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1/*2 drivers/net/ethernet/dec/tulip/21142.c3 4 Copyright 2000,2001 The Linux Kernel Team5 Written/copyright 1994-2001 by Donald Becker.6 7 This software may be used and distributed according to the terms8 of the GNU General Public License, incorporated herein by reference.9 10 DC21143 manual "21143 PCI/CardBus 10/100Mb/s Ethernet LAN Controller11 Hardware Reference Manual" is currently available at :12 http://developer.intel.com/design/network/manuals/278074.htm13 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 list27 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 calls105 * 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 } else133 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 else181 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#endif209 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