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1da177e4 LT |
1 | /* |
2 | drivers/net/tulip/21142.c | |
3 | ||
1da177e4 LT |
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} | |
78a65518 GG |
11 | for more information on this driver. |
12 | Please submit bugs to http://bugzilla.kernel.org/ . | |
1da177e4 LT |
13 | */ |
14 | ||
1da177e4 LT |
15 | #include <linux/delay.h> |
16 | #include "tulip.h" | |
17 | ||
18 | ||
19 | static u16 t21142_csr13[] = { 0x0001, 0x0009, 0x0009, 0x0000, 0x0001, }; | |
20 | u16 t21142_csr14[] = { 0xFFFF, 0x0705, 0x0705, 0x0000, 0x7F3D, }; | |
21 | static u16 t21142_csr15[] = { 0x0008, 0x0006, 0x000E, 0x0008, 0x0008, }; | |
22 | ||
23 | ||
24 | /* Handle the 21143 uniquely: do autoselect with NWay, not the EEPROM list | |
25 | of available transceivers. */ | |
c4028958 | 26 | void t21142_media_task(struct work_struct *work) |
1da177e4 | 27 | { |
c4028958 DH |
28 | struct tulip_private *tp = |
29 | container_of(work, struct tulip_private, media_work); | |
30 | struct net_device *dev = tp->dev; | |
1da177e4 LT |
31 | void __iomem *ioaddr = tp->base_addr; |
32 | int csr12 = ioread32(ioaddr + CSR12); | |
33 | int next_tick = 60*HZ; | |
34 | int new_csr6 = 0; | |
35 | ||
36 | if (tulip_debug > 2) | |
37 | printk(KERN_INFO"%s: 21143 negotiation status %8.8x, %s.\n", | |
38 | dev->name, csr12, medianame[dev->if_port]); | |
39 | if (tulip_media_cap[dev->if_port] & MediaIsMII) { | |
40 | if (tulip_check_duplex(dev) < 0) { | |
41 | netif_carrier_off(dev); | |
42 | next_tick = 3*HZ; | |
43 | } else { | |
44 | netif_carrier_on(dev); | |
45 | next_tick = 60*HZ; | |
46 | } | |
47 | } else if (tp->nwayset) { | |
48 | /* Don't screw up a negotiated session! */ | |
49 | if (tulip_debug > 1) | |
50 | printk(KERN_INFO"%s: Using NWay-set %s media, csr12 %8.8x.\n", | |
51 | dev->name, medianame[dev->if_port], csr12); | |
52 | } else if (tp->medialock) { | |
53 | ; | |
54 | } else if (dev->if_port == 3) { | |
55 | if (csr12 & 2) { /* No 100mbps link beat, revert to 10mbps. */ | |
56 | if (tulip_debug > 1) | |
57 | printk(KERN_INFO"%s: No 21143 100baseTx link beat, %8.8x, " | |
58 | "trying NWay.\n", dev->name, csr12); | |
59 | t21142_start_nway(dev); | |
60 | next_tick = 3*HZ; | |
61 | } | |
62 | } else if ((csr12 & 0x7000) != 0x5000) { | |
63 | /* Negotiation failed. Search media types. */ | |
64 | if (tulip_debug > 1) | |
65 | printk(KERN_INFO"%s: 21143 negotiation failed, status %8.8x.\n", | |
66 | dev->name, csr12); | |
67 | if (!(csr12 & 4)) { /* 10mbps link beat good. */ | |
68 | new_csr6 = 0x82420000; | |
69 | dev->if_port = 0; | |
70 | iowrite32(0, ioaddr + CSR13); | |
71 | iowrite32(0x0003FFFF, ioaddr + CSR14); | |
72 | iowrite16(t21142_csr15[dev->if_port], ioaddr + CSR15); | |
73 | iowrite32(t21142_csr13[dev->if_port], ioaddr + CSR13); | |
74 | } else { | |
75 | /* Select 100mbps port to check for link beat. */ | |
76 | new_csr6 = 0x83860000; | |
77 | dev->if_port = 3; | |
78 | iowrite32(0, ioaddr + CSR13); | |
79 | iowrite32(0x0003FF7F, ioaddr + CSR14); | |
80 | iowrite16(8, ioaddr + CSR15); | |
81 | iowrite32(1, ioaddr + CSR13); | |
82 | } | |
83 | if (tulip_debug > 1) | |
84 | printk(KERN_INFO"%s: Testing new 21143 media %s.\n", | |
85 | dev->name, medianame[dev->if_port]); | |
86 | if (new_csr6 != (tp->csr6 & ~0x00D5)) { | |
87 | tp->csr6 &= 0x00D5; | |
88 | tp->csr6 |= new_csr6; | |
89 | iowrite32(0x0301, ioaddr + CSR12); | |
90 | tulip_restart_rxtx(tp); | |
91 | } | |
92 | next_tick = 3*HZ; | |
93 | } | |
94 | ||
95 | /* mod_timer synchronizes us with potential add_timer calls | |
96 | * from interrupts. | |
97 | */ | |
98 | mod_timer(&tp->timer, RUN_AT(next_tick)); | |
99 | } | |
100 | ||
101 | ||
102 | void t21142_start_nway(struct net_device *dev) | |
103 | { | |
104 | struct tulip_private *tp = netdev_priv(dev); | |
105 | void __iomem *ioaddr = tp->base_addr; | |
106 | int csr14 = ((tp->sym_advertise & 0x0780) << 9) | | |
107 | ((tp->sym_advertise & 0x0020) << 1) | 0xffbf; | |
108 | ||
109 | dev->if_port = 0; | |
110 | tp->nway = tp->mediasense = 1; | |
111 | tp->nwayset = tp->lpar = 0; | |
112 | if (tulip_debug > 1) | |
113 | printk(KERN_DEBUG "%s: Restarting 21143 autonegotiation, csr14=%8.8x.\n", | |
114 | dev->name, csr14); | |
115 | iowrite32(0x0001, ioaddr + CSR13); | |
116 | udelay(100); | |
117 | iowrite32(csr14, ioaddr + CSR14); | |
118 | tp->csr6 = 0x82420000 | (tp->sym_advertise & 0x0040 ? FullDuplex : 0); | |
119 | iowrite32(tp->csr6, ioaddr + CSR6); | |
120 | if (tp->mtable && tp->mtable->csr15dir) { | |
121 | iowrite32(tp->mtable->csr15dir, ioaddr + CSR15); | |
122 | iowrite32(tp->mtable->csr15val, ioaddr + CSR15); | |
123 | } else | |
124 | iowrite16(0x0008, ioaddr + CSR15); | |
125 | iowrite32(0x1301, ioaddr + CSR12); /* Trigger NWAY. */ | |
126 | } | |
127 | ||
128 | ||
129 | ||
130 | void t21142_lnk_change(struct net_device *dev, int csr5) | |
131 | { | |
132 | struct tulip_private *tp = netdev_priv(dev); | |
133 | void __iomem *ioaddr = tp->base_addr; | |
134 | int csr12 = ioread32(ioaddr + CSR12); | |
135 | ||
136 | if (tulip_debug > 1) | |
137 | printk(KERN_INFO"%s: 21143 link status interrupt %8.8x, CSR5 %x, " | |
138 | "%8.8x.\n", dev->name, csr12, csr5, ioread32(ioaddr + CSR14)); | |
139 | ||
140 | /* If NWay finished and we have a negotiated partner capability. */ | |
141 | if (tp->nway && !tp->nwayset && (csr12 & 0x7000) == 0x5000) { | |
142 | int setup_done = 0; | |
143 | int negotiated = tp->sym_advertise & (csr12 >> 16); | |
144 | tp->lpar = csr12 >> 16; | |
145 | tp->nwayset = 1; | |
146 | if (negotiated & 0x0100) dev->if_port = 5; | |
147 | else if (negotiated & 0x0080) dev->if_port = 3; | |
148 | else if (negotiated & 0x0040) dev->if_port = 4; | |
149 | else if (negotiated & 0x0020) dev->if_port = 0; | |
150 | else { | |
151 | tp->nwayset = 0; | |
152 | if ((csr12 & 2) == 0 && (tp->sym_advertise & 0x0180)) | |
153 | dev->if_port = 3; | |
154 | } | |
155 | tp->full_duplex = (tulip_media_cap[dev->if_port] & MediaAlwaysFD) ? 1:0; | |
156 | ||
157 | if (tulip_debug > 1) { | |
158 | if (tp->nwayset) | |
159 | printk(KERN_INFO "%s: Switching to %s based on link " | |
160 | "negotiation %4.4x & %4.4x = %4.4x.\n", | |
161 | dev->name, medianame[dev->if_port], tp->sym_advertise, | |
162 | tp->lpar, negotiated); | |
163 | else | |
164 | printk(KERN_INFO "%s: Autonegotiation failed, using %s," | |
165 | " link beat status %4.4x.\n", | |
166 | dev->name, medianame[dev->if_port], csr12); | |
167 | } | |
168 | ||
169 | if (tp->mtable) { | |
170 | int i; | |
171 | for (i = 0; i < tp->mtable->leafcount; i++) | |
172 | if (tp->mtable->mleaf[i].media == dev->if_port) { | |
32b5bfab | 173 | int startup = ! ((tp->chip_id == DC21143 && (tp->revision == 48 || tp->revision == 65))); |
1da177e4 LT |
174 | tp->cur_index = i; |
175 | tulip_select_media(dev, startup); | |
176 | setup_done = 1; | |
177 | break; | |
178 | } | |
179 | } | |
180 | if ( ! setup_done) { | |
181 | tp->csr6 = (dev->if_port & 1 ? 0x838E0000 : 0x82420000) | (tp->csr6 & 0x20ff); | |
182 | if (tp->full_duplex) | |
183 | tp->csr6 |= 0x0200; | |
184 | iowrite32(1, ioaddr + CSR13); | |
185 | } | |
186 | #if 0 /* Restart shouldn't be needed. */ | |
187 | iowrite32(tp->csr6 | RxOn, ioaddr + CSR6); | |
188 | if (tulip_debug > 2) | |
189 | printk(KERN_DEBUG "%s: Restarting Tx and Rx, CSR5 is %8.8x.\n", | |
190 | dev->name, ioread32(ioaddr + CSR5)); | |
191 | #endif | |
192 | tulip_start_rxtx(tp); | |
193 | if (tulip_debug > 2) | |
194 | printk(KERN_DEBUG "%s: Setting CSR6 %8.8x/%x CSR12 %8.8x.\n", | |
195 | dev->name, tp->csr6, ioread32(ioaddr + CSR6), | |
196 | ioread32(ioaddr + CSR12)); | |
197 | } else if ((tp->nwayset && (csr5 & 0x08000000) | |
198 | && (dev->if_port == 3 || dev->if_port == 5) | |
199 | && (csr12 & 2) == 2) || | |
200 | (tp->nway && (csr5 & (TPLnkFail)))) { | |
201 | /* Link blew? Maybe restart NWay. */ | |
202 | del_timer_sync(&tp->timer); | |
203 | t21142_start_nway(dev); | |
204 | tp->timer.expires = RUN_AT(3*HZ); | |
205 | add_timer(&tp->timer); | |
206 | } else if (dev->if_port == 3 || dev->if_port == 5) { | |
207 | if (tulip_debug > 1) | |
208 | printk(KERN_INFO"%s: 21143 %s link beat %s.\n", | |
209 | dev->name, medianame[dev->if_port], | |
210 | (csr12 & 2) ? "failed" : "good"); | |
211 | if ((csr12 & 2) && ! tp->medialock) { | |
212 | del_timer_sync(&tp->timer); | |
213 | t21142_start_nway(dev); | |
214 | tp->timer.expires = RUN_AT(3*HZ); | |
215 | add_timer(&tp->timer); | |
216 | } else if (dev->if_port == 5) | |
217 | iowrite32(ioread32(ioaddr + CSR14) & ~0x080, ioaddr + CSR14); | |
218 | } else if (dev->if_port == 0 || dev->if_port == 4) { | |
219 | if ((csr12 & 4) == 0) | |
220 | printk(KERN_INFO"%s: 21143 10baseT link beat good.\n", | |
221 | dev->name); | |
222 | } else if (!(csr12 & 4)) { /* 10mbps link beat good. */ | |
223 | if (tulip_debug) | |
224 | printk(KERN_INFO"%s: 21143 10mbps sensed media.\n", | |
225 | dev->name); | |
226 | dev->if_port = 0; | |
227 | } else if (tp->nwayset) { | |
228 | if (tulip_debug) | |
229 | printk(KERN_INFO"%s: 21143 using NWay-set %s, csr6 %8.8x.\n", | |
230 | dev->name, medianame[dev->if_port], tp->csr6); | |
231 | } else { /* 100mbps link beat good. */ | |
232 | if (tulip_debug) | |
233 | printk(KERN_INFO"%s: 21143 100baseTx sensed media.\n", | |
234 | dev->name); | |
235 | dev->if_port = 3; | |
236 | tp->csr6 = 0x838E0000 | (tp->csr6 & 0x20ff); | |
237 | iowrite32(0x0003FF7F, ioaddr + CSR14); | |
238 | iowrite32(0x0301, ioaddr + CSR12); | |
239 | tulip_restart_rxtx(tp); | |
240 | } | |
241 | } | |
242 | ||
243 |