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 | |
21 | static u16 t21142_csr13[] = { 0x0001, 0x0009, 0x0009, 0x0000, 0x0001, }; |
22 | u16 t21142_csr14[] = { 0xFFFF, 0x0705, 0x0705, 0x0000, 0x7F3D, }; |
23 | static 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. */ |
28 | void 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(timer: &tp->timer, RUN_AT(next_tick)); |
108 | } |
109 | |
110 | |
111 | void 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 | |
139 | void 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(timer: &tp->timer); |
220 | t21142_start_nway(dev); |
221 | tp->timer.expires = RUN_AT(3*HZ); |
222 | add_timer(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(timer: &tp->timer); |
230 | t21142_start_nway(dev); |
231 | tp->timer.expires = RUN_AT(3*HZ); |
232 | add_timer(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 | |