Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | drivers/net/tulip/21142.c |
| 3 | |
Valerie Henson | 6b92801 | 2006-09-08 11:15:34 -0700 | [diff] [blame^] | 4 | Maintained by Valerie Henson <val_henson@linux.intel.com> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 <linux/pci.h> |
| 18 | #include <linux/delay.h> |
| 19 | #include "tulip.h" |
| 20 | |
| 21 | |
| 22 | static u16 t21142_csr13[] = { 0x0001, 0x0009, 0x0009, 0x0000, 0x0001, }; |
| 23 | u16 t21142_csr14[] = { 0xFFFF, 0x0705, 0x0705, 0x0000, 0x7F3D, }; |
| 24 | static u16 t21142_csr15[] = { 0x0008, 0x0006, 0x000E, 0x0008, 0x0008, }; |
| 25 | |
| 26 | |
| 27 | /* Handle the 21143 uniquely: do autoselect with NWay, not the EEPROM list |
| 28 | of available transceivers. */ |
| 29 | void t21142_timer(unsigned long data) |
| 30 | { |
| 31 | struct net_device *dev = (struct net_device *)data; |
| 32 | struct tulip_private *tp = netdev_priv(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 | |
| 38 | if (tulip_debug > 2) |
| 39 | printk(KERN_INFO"%s: 21143 negotiation status %8.8x, %s.\n", |
| 40 | dev->name, csr12, medianame[dev->if_port]); |
| 41 | if (tulip_media_cap[dev->if_port] & MediaIsMII) { |
| 42 | if (tulip_check_duplex(dev) < 0) { |
| 43 | netif_carrier_off(dev); |
| 44 | next_tick = 3*HZ; |
| 45 | } else { |
| 46 | netif_carrier_on(dev); |
| 47 | next_tick = 60*HZ; |
| 48 | } |
| 49 | } else if (tp->nwayset) { |
| 50 | /* Don't screw up a negotiated session! */ |
| 51 | if (tulip_debug > 1) |
| 52 | printk(KERN_INFO"%s: Using NWay-set %s media, csr12 %8.8x.\n", |
| 53 | dev->name, medianame[dev->if_port], csr12); |
| 54 | } else if (tp->medialock) { |
| 55 | ; |
| 56 | } else if (dev->if_port == 3) { |
| 57 | if (csr12 & 2) { /* No 100mbps link beat, revert to 10mbps. */ |
| 58 | if (tulip_debug > 1) |
| 59 | printk(KERN_INFO"%s: No 21143 100baseTx link beat, %8.8x, " |
| 60 | "trying NWay.\n", dev->name, csr12); |
| 61 | t21142_start_nway(dev); |
| 62 | next_tick = 3*HZ; |
| 63 | } |
| 64 | } else if ((csr12 & 0x7000) != 0x5000) { |
| 65 | /* Negotiation failed. Search media types. */ |
| 66 | if (tulip_debug > 1) |
| 67 | printk(KERN_INFO"%s: 21143 negotiation failed, status %8.8x.\n", |
| 68 | dev->name, csr12); |
| 69 | if (!(csr12 & 4)) { /* 10mbps link beat good. */ |
| 70 | new_csr6 = 0x82420000; |
| 71 | dev->if_port = 0; |
| 72 | iowrite32(0, ioaddr + CSR13); |
| 73 | iowrite32(0x0003FFFF, ioaddr + CSR14); |
| 74 | iowrite16(t21142_csr15[dev->if_port], ioaddr + CSR15); |
| 75 | iowrite32(t21142_csr13[dev->if_port], ioaddr + CSR13); |
| 76 | } else { |
| 77 | /* Select 100mbps port to check for link beat. */ |
| 78 | new_csr6 = 0x83860000; |
| 79 | dev->if_port = 3; |
| 80 | iowrite32(0, ioaddr + CSR13); |
| 81 | iowrite32(0x0003FF7F, ioaddr + CSR14); |
| 82 | iowrite16(8, ioaddr + CSR15); |
| 83 | iowrite32(1, ioaddr + CSR13); |
| 84 | } |
| 85 | if (tulip_debug > 1) |
| 86 | printk(KERN_INFO"%s: Testing new 21143 media %s.\n", |
| 87 | dev->name, medianame[dev->if_port]); |
| 88 | if (new_csr6 != (tp->csr6 & ~0x00D5)) { |
| 89 | tp->csr6 &= 0x00D5; |
| 90 | tp->csr6 |= new_csr6; |
| 91 | iowrite32(0x0301, ioaddr + CSR12); |
| 92 | tulip_restart_rxtx(tp); |
| 93 | } |
| 94 | next_tick = 3*HZ; |
| 95 | } |
| 96 | |
| 97 | /* mod_timer synchronizes us with potential add_timer calls |
| 98 | * from interrupts. |
| 99 | */ |
| 100 | mod_timer(&tp->timer, RUN_AT(next_tick)); |
| 101 | } |
| 102 | |
| 103 | |
| 104 | void t21142_start_nway(struct net_device *dev) |
| 105 | { |
| 106 | struct tulip_private *tp = netdev_priv(dev); |
| 107 | void __iomem *ioaddr = tp->base_addr; |
| 108 | int csr14 = ((tp->sym_advertise & 0x0780) << 9) | |
| 109 | ((tp->sym_advertise & 0x0020) << 1) | 0xffbf; |
| 110 | |
| 111 | dev->if_port = 0; |
| 112 | tp->nway = tp->mediasense = 1; |
| 113 | tp->nwayset = tp->lpar = 0; |
| 114 | if (tulip_debug > 1) |
| 115 | printk(KERN_DEBUG "%s: Restarting 21143 autonegotiation, csr14=%8.8x.\n", |
| 116 | dev->name, csr14); |
| 117 | iowrite32(0x0001, ioaddr + CSR13); |
| 118 | udelay(100); |
| 119 | iowrite32(csr14, ioaddr + CSR14); |
| 120 | tp->csr6 = 0x82420000 | (tp->sym_advertise & 0x0040 ? FullDuplex : 0); |
| 121 | iowrite32(tp->csr6, ioaddr + CSR6); |
| 122 | if (tp->mtable && tp->mtable->csr15dir) { |
| 123 | iowrite32(tp->mtable->csr15dir, ioaddr + CSR15); |
| 124 | iowrite32(tp->mtable->csr15val, ioaddr + CSR15); |
| 125 | } else |
| 126 | iowrite16(0x0008, ioaddr + CSR15); |
| 127 | iowrite32(0x1301, ioaddr + CSR12); /* Trigger NWAY. */ |
| 128 | } |
| 129 | |
| 130 | |
| 131 | |
| 132 | void t21142_lnk_change(struct net_device *dev, int csr5) |
| 133 | { |
| 134 | struct tulip_private *tp = netdev_priv(dev); |
| 135 | void __iomem *ioaddr = tp->base_addr; |
| 136 | int csr12 = ioread32(ioaddr + CSR12); |
| 137 | |
| 138 | if (tulip_debug > 1) |
| 139 | printk(KERN_INFO"%s: 21143 link status interrupt %8.8x, CSR5 %x, " |
| 140 | "%8.8x.\n", dev->name, csr12, csr5, ioread32(ioaddr + CSR14)); |
| 141 | |
| 142 | /* If NWay finished and we have a negotiated partner capability. */ |
| 143 | if (tp->nway && !tp->nwayset && (csr12 & 0x7000) == 0x5000) { |
| 144 | int setup_done = 0; |
| 145 | int negotiated = tp->sym_advertise & (csr12 >> 16); |
| 146 | tp->lpar = csr12 >> 16; |
| 147 | tp->nwayset = 1; |
| 148 | if (negotiated & 0x0100) dev->if_port = 5; |
| 149 | else if (negotiated & 0x0080) dev->if_port = 3; |
| 150 | else if (negotiated & 0x0040) dev->if_port = 4; |
| 151 | else if (negotiated & 0x0020) dev->if_port = 0; |
| 152 | else { |
| 153 | tp->nwayset = 0; |
| 154 | if ((csr12 & 2) == 0 && (tp->sym_advertise & 0x0180)) |
| 155 | dev->if_port = 3; |
| 156 | } |
| 157 | tp->full_duplex = (tulip_media_cap[dev->if_port] & MediaAlwaysFD) ? 1:0; |
| 158 | |
| 159 | if (tulip_debug > 1) { |
| 160 | if (tp->nwayset) |
| 161 | printk(KERN_INFO "%s: Switching to %s based on link " |
| 162 | "negotiation %4.4x & %4.4x = %4.4x.\n", |
| 163 | dev->name, medianame[dev->if_port], tp->sym_advertise, |
| 164 | tp->lpar, negotiated); |
| 165 | else |
| 166 | printk(KERN_INFO "%s: Autonegotiation failed, using %s," |
| 167 | " link beat status %4.4x.\n", |
| 168 | dev->name, medianame[dev->if_port], csr12); |
| 169 | } |
| 170 | |
| 171 | if (tp->mtable) { |
| 172 | int i; |
| 173 | for (i = 0; i < tp->mtable->leafcount; i++) |
| 174 | if (tp->mtable->mleaf[i].media == dev->if_port) { |
Philippe De Muyter | 32b5bfa | 2005-09-22 11:09:44 +0200 | [diff] [blame] | 175 | int startup = ! ((tp->chip_id == DC21143 && (tp->revision == 48 || tp->revision == 65))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | tp->cur_index = i; |
| 177 | tulip_select_media(dev, startup); |
| 178 | setup_done = 1; |
| 179 | break; |
| 180 | } |
| 181 | } |
| 182 | if ( ! setup_done) { |
| 183 | tp->csr6 = (dev->if_port & 1 ? 0x838E0000 : 0x82420000) | (tp->csr6 & 0x20ff); |
| 184 | if (tp->full_duplex) |
| 185 | tp->csr6 |= 0x0200; |
| 186 | iowrite32(1, ioaddr + CSR13); |
| 187 | } |
| 188 | #if 0 /* Restart shouldn't be needed. */ |
| 189 | iowrite32(tp->csr6 | RxOn, ioaddr + CSR6); |
| 190 | if (tulip_debug > 2) |
| 191 | printk(KERN_DEBUG "%s: Restarting Tx and Rx, CSR5 is %8.8x.\n", |
| 192 | dev->name, ioread32(ioaddr + CSR5)); |
| 193 | #endif |
| 194 | tulip_start_rxtx(tp); |
| 195 | if (tulip_debug > 2) |
| 196 | printk(KERN_DEBUG "%s: Setting CSR6 %8.8x/%x CSR12 %8.8x.\n", |
| 197 | dev->name, tp->csr6, ioread32(ioaddr + CSR6), |
| 198 | ioread32(ioaddr + CSR12)); |
| 199 | } else if ((tp->nwayset && (csr5 & 0x08000000) |
| 200 | && (dev->if_port == 3 || dev->if_port == 5) |
| 201 | && (csr12 & 2) == 2) || |
| 202 | (tp->nway && (csr5 & (TPLnkFail)))) { |
| 203 | /* Link blew? Maybe restart NWay. */ |
| 204 | del_timer_sync(&tp->timer); |
| 205 | t21142_start_nway(dev); |
| 206 | tp->timer.expires = RUN_AT(3*HZ); |
| 207 | add_timer(&tp->timer); |
| 208 | } else if (dev->if_port == 3 || dev->if_port == 5) { |
| 209 | if (tulip_debug > 1) |
| 210 | printk(KERN_INFO"%s: 21143 %s link beat %s.\n", |
| 211 | dev->name, medianame[dev->if_port], |
| 212 | (csr12 & 2) ? "failed" : "good"); |
| 213 | if ((csr12 & 2) && ! tp->medialock) { |
| 214 | del_timer_sync(&tp->timer); |
| 215 | t21142_start_nway(dev); |
| 216 | tp->timer.expires = RUN_AT(3*HZ); |
| 217 | add_timer(&tp->timer); |
| 218 | } else if (dev->if_port == 5) |
| 219 | iowrite32(ioread32(ioaddr + CSR14) & ~0x080, ioaddr + CSR14); |
| 220 | } else if (dev->if_port == 0 || dev->if_port == 4) { |
| 221 | if ((csr12 & 4) == 0) |
| 222 | printk(KERN_INFO"%s: 21143 10baseT link beat good.\n", |
| 223 | dev->name); |
| 224 | } else if (!(csr12 & 4)) { /* 10mbps link beat good. */ |
| 225 | if (tulip_debug) |
| 226 | printk(KERN_INFO"%s: 21143 10mbps sensed media.\n", |
| 227 | dev->name); |
| 228 | dev->if_port = 0; |
| 229 | } else if (tp->nwayset) { |
| 230 | if (tulip_debug) |
| 231 | printk(KERN_INFO"%s: 21143 using NWay-set %s, csr6 %8.8x.\n", |
| 232 | dev->name, medianame[dev->if_port], tp->csr6); |
| 233 | } else { /* 100mbps link beat good. */ |
| 234 | if (tulip_debug) |
| 235 | printk(KERN_INFO"%s: 21143 100baseTx sensed media.\n", |
| 236 | dev->name); |
| 237 | dev->if_port = 3; |
| 238 | tp->csr6 = 0x838E0000 | (tp->csr6 & 0x20ff); |
| 239 | iowrite32(0x0003FF7F, ioaddr + CSR14); |
| 240 | iowrite32(0x0301, ioaddr + CSR12); |
| 241 | tulip_restart_rxtx(tp); |
| 242 | } |
| 243 | } |
| 244 | |
| 245 | |