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