1 /*
2 drivers/net/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 Please refer to Documentation/DocBook/tulip-user.{pdf,ps,html}
11 for more information on this driver.
12
13 DC21143 manual "21143 PCI/CardBus 10/100Mb/s Ethernet LAN Controller
14 Hardware Reference Manual" is currently available at :
15 http://developer.intel.com/design/network/manuals/278074.htm
16
17 Please submit bugs to http://bugzilla.kernel.org/ .
18 */
19
20 #include <linux/delay.h>
21 #include "tulip.h"
22
23
24 static u16 t21142_csr13[] = { 0x0001, 0x0009, 0x0009, 0x0000, 0x0001, };
25 u16 t21142_csr14[] = { 0xFFFF, 0x0705, 0x0705, 0x0000, 0x7F3D, };
26 static u16 t21142_csr15[] = { 0x0008, 0x0006, 0x000E, 0x0008, 0x0008, };
27
28
29 /* Handle the 21143 uniquely: do autoselect with NWay, not the EEPROM list
30 of available transceivers. */
t21142_media_task(struct work_struct * work)31 void t21142_media_task(struct work_struct *work)
32 {
33 struct tulip_private *tp =
34 container_of(work, struct tulip_private, media_work);
35 struct net_device *dev = tp->dev;
36 void __iomem *ioaddr = tp->base_addr;
37 int csr12 = ioread32(ioaddr + CSR12);
38 int next_tick = 60*HZ;
39 int new_csr6 = 0;
40 int csr14 = ioread32(ioaddr + CSR14);
41
42 /* CSR12[LS10,LS100] are not reliable during autonegotiation */
43 if ((csr14 & 0x80) && (csr12 & 0x7000) != 0x5000)
44 csr12 |= 6;
45 if (tulip_debug > 2)
46 printk(KERN_INFO"%s: 21143 negotiation status %8.8x, %s.\n",
47 dev->name, csr12, medianame[dev->if_port]);
48 if (tulip_media_cap[dev->if_port] & MediaIsMII) {
49 if (tulip_check_duplex(dev) < 0) {
50 netif_carrier_off(dev);
51 next_tick = 3*HZ;
52 } else {
53 netif_carrier_on(dev);
54 next_tick = 60*HZ;
55 }
56 } else if (tp->nwayset) {
57 /* Don't screw up a negotiated session! */
58 if (tulip_debug > 1)
59 printk(KERN_INFO"%s: Using NWay-set %s media, csr12 %8.8x.\n",
60 dev->name, medianame[dev->if_port], csr12);
61 } else if (tp->medialock) {
62 ;
63 } else if (dev->if_port == 3) {
64 if (csr12 & 2) { /* No 100mbps link beat, revert to 10mbps. */
65 if (tulip_debug > 1)
66 printk(KERN_INFO"%s: No 21143 100baseTx link beat, %8.8x, "
67 "trying NWay.\n", dev->name, csr12);
68 t21142_start_nway(dev);
69 next_tick = 3*HZ;
70 }
71 } else if ((csr12 & 0x7000) != 0x5000) {
72 /* Negotiation failed. Search media types. */
73 if (tulip_debug > 1)
74 printk(KERN_INFO"%s: 21143 negotiation failed, status %8.8x.\n",
75 dev->name, 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 printk(KERN_INFO"%s: Testing new 21143 media %s.\n",
94 dev->name, 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
t21142_start_nway(struct net_device * dev)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 printk(KERN_DEBUG "%s: Restarting 21143 autonegotiation, csr14=%8.8x.\n",
123 dev->name, 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
t21142_lnk_change(struct net_device * dev,int csr5)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 printk(KERN_INFO"%s: 21143 link status interrupt %8.8x, CSR5 %x, "
151 "%8.8x.\n", dev->name, csr12, csr5, csr14);
152
153 /* If NWay finished and we have a negotiated partner capability. */
154 if (tp->nway && !tp->nwayset && (csr12 & 0x7000) == 0x5000) {
155 int setup_done = 0;
156 int negotiated = tp->sym_advertise & (csr12 >> 16);
157 tp->lpar = csr12 >> 16;
158 tp->nwayset = 1;
159 /* If partner cannot negotiate, it is 10Mbps Half Duplex */
160 if (!(csr12 & 0x8000)) dev->if_port = 0;
161 else if (negotiated & 0x0100) dev->if_port = 5;
162 else if (negotiated & 0x0080) dev->if_port = 3;
163 else if (negotiated & 0x0040) dev->if_port = 4;
164 else if (negotiated & 0x0020) dev->if_port = 0;
165 else {
166 tp->nwayset = 0;
167 if ((csr12 & 2) == 0 && (tp->sym_advertise & 0x0180))
168 dev->if_port = 3;
169 }
170 tp->full_duplex = (tulip_media_cap[dev->if_port] & MediaAlwaysFD) ? 1:0;
171
172 if (tulip_debug > 1) {
173 if (tp->nwayset)
174 printk(KERN_INFO "%s: Switching to %s based on link "
175 "negotiation %4.4x & %4.4x = %4.4x.\n",
176 dev->name, medianame[dev->if_port], tp->sym_advertise,
177 tp->lpar, negotiated);
178 else
179 printk(KERN_INFO "%s: Autonegotiation failed, using %s,"
180 " link beat status %4.4x.\n",
181 dev->name, medianame[dev->if_port], csr12);
182 }
183
184 if (tp->mtable) {
185 int i;
186 for (i = 0; i < tp->mtable->leafcount; i++)
187 if (tp->mtable->mleaf[i].media == dev->if_port) {
188 int startup = ! ((tp->chip_id == DC21143 && (tp->revision == 48 || tp->revision == 65)));
189 tp->cur_index = i;
190 tulip_select_media(dev, startup);
191 setup_done = 1;
192 break;
193 }
194 }
195 if ( ! setup_done) {
196 tp->csr6 = (dev->if_port & 1 ? 0x838E0000 : 0x82420000) | (tp->csr6 & 0x20ff);
197 if (tp->full_duplex)
198 tp->csr6 |= 0x0200;
199 iowrite32(1, ioaddr + CSR13);
200 }
201 #if 0 /* Restart shouldn't be needed. */
202 iowrite32(tp->csr6 | RxOn, ioaddr + CSR6);
203 if (tulip_debug > 2)
204 printk(KERN_DEBUG "%s: Restarting Tx and Rx, CSR5 is %8.8x.\n",
205 dev->name, ioread32(ioaddr + CSR5));
206 #endif
207 tulip_start_rxtx(tp);
208 if (tulip_debug > 2)
209 printk(KERN_DEBUG "%s: Setting CSR6 %8.8x/%x CSR12 %8.8x.\n",
210 dev->name, tp->csr6, ioread32(ioaddr + CSR6),
211 ioread32(ioaddr + CSR12));
212 } else if ((tp->nwayset && (csr5 & 0x08000000)
213 && (dev->if_port == 3 || dev->if_port == 5)
214 && (csr12 & 2) == 2) ||
215 (tp->nway && (csr5 & (TPLnkFail)))) {
216 /* Link blew? Maybe restart NWay. */
217 del_timer_sync(&tp->timer);
218 t21142_start_nway(dev);
219 tp->timer.expires = RUN_AT(3*HZ);
220 add_timer(&tp->timer);
221 } else if (dev->if_port == 3 || dev->if_port == 5) {
222 if (tulip_debug > 1)
223 printk(KERN_INFO"%s: 21143 %s link beat %s.\n",
224 dev->name, medianame[dev->if_port],
225 (csr12 & 2) ? "failed" : "good");
226 if ((csr12 & 2) && ! tp->medialock) {
227 del_timer_sync(&tp->timer);
228 t21142_start_nway(dev);
229 tp->timer.expires = RUN_AT(3*HZ);
230 add_timer(&tp->timer);
231 } else if (dev->if_port == 5)
232 iowrite32(csr14 & ~0x080, ioaddr + CSR14);
233 } else if (dev->if_port == 0 || dev->if_port == 4) {
234 if ((csr12 & 4) == 0)
235 printk(KERN_INFO"%s: 21143 10baseT link beat good.\n",
236 dev->name);
237 } else if (!(csr12 & 4)) { /* 10mbps link beat good. */
238 if (tulip_debug)
239 printk(KERN_INFO"%s: 21143 10mbps sensed media.\n",
240 dev->name);
241 dev->if_port = 0;
242 } else if (tp->nwayset) {
243 if (tulip_debug)
244 printk(KERN_INFO"%s: 21143 using NWay-set %s, csr6 %8.8x.\n",
245 dev->name, medianame[dev->if_port], tp->csr6);
246 } else { /* 100mbps link beat good. */
247 if (tulip_debug)
248 printk(KERN_INFO"%s: 21143 100baseTx sensed media.\n",
249 dev->name);
250 dev->if_port = 3;
251 tp->csr6 = 0x838E0000 | (tp->csr6 & 0x20ff);
252 iowrite32(0x0003FF7F, ioaddr + CSR14);
253 iowrite32(0x0301, ioaddr + CSR12);
254 tulip_restart_rxtx(tp);
255 }
256 }
257
258
259