1210fb3748a74e7dfb085fb7cf4aa874a6455504
2 drivers/net/tulip/21142.c
4 Copyright 2000,2001 The Linux Kernel Team
5 Written/copyright 1994-2001 by Donald Becker.
7 This software may be used and distributed according to the terms
8 of the GNU General Public License, incorporated herein by reference.
10 Please refer to Documentation/DocBook/tulip-user.{pdf,ps,html}
11 for more information on this driver.
12 Please submit bugs to http://bugzilla.kernel.org/ .
15 #include <linux/delay.h>
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, };
24 /* Handle the 21143 uniquely: do autoselect with NWay, not the EEPROM list
25 of available transceivers. */
26 void t21142_media_task(struct work_struct
*work
)
28 struct tulip_private
*tp
=
29 container_of(work
, struct tulip_private
, media_work
);
30 struct net_device
*dev
= tp
->dev
;
31 void __iomem
*ioaddr
= tp
->base_addr
;
32 int csr12
= ioread32(ioaddr
+ CSR12
);
33 int next_tick
= 60*HZ
;
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
);
44 netif_carrier_on(dev
);
47 } else if (tp
->nwayset
) {
48 /* Don't screw up a negotiated session! */
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
) {
54 } else if (dev
->if_port
== 3) {
55 if (csr12
& 2) { /* No 100mbps link beat, revert to 10mbps. */
57 printk(KERN_INFO
"%s: No 21143 100baseTx link beat, %8.8x, "
58 "trying NWay.\n", dev
->name
, csr12
);
59 t21142_start_nway(dev
);
62 } else if ((csr12
& 0x7000) != 0x5000) {
63 /* Negotiation failed. Search media types. */
65 printk(KERN_INFO
"%s: 21143 negotiation failed, status %8.8x.\n",
67 if (!(csr12
& 4)) { /* 10mbps link beat good. */
68 new_csr6
= 0x82420000;
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
);
75 /* Select 100mbps port to check for link beat. */
76 new_csr6
= 0x83860000;
78 iowrite32(0, ioaddr
+ CSR13
);
79 iowrite32(0x0003FF7F, ioaddr
+ CSR14
);
80 iowrite16(8, ioaddr
+ CSR15
);
81 iowrite32(1, ioaddr
+ CSR13
);
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)) {
89 iowrite32(0x0301, ioaddr
+ CSR12
);
90 tulip_restart_rxtx(tp
);
95 /* mod_timer synchronizes us with potential add_timer calls
98 mod_timer(&tp
->timer
, RUN_AT(next_tick
));
102 void t21142_start_nway(struct net_device
*dev
)
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;
110 tp
->nway
= tp
->mediasense
= 1;
111 tp
->nwayset
= tp
->lpar
= 0;
113 printk(KERN_DEBUG
"%s: Restarting 21143 autonegotiation, csr14=%8.8x.\n",
115 iowrite32(0x0001, ioaddr
+ CSR13
);
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
);
124 iowrite16(0x0008, ioaddr
+ CSR15
);
125 iowrite32(0x1301, ioaddr
+ CSR12
); /* Trigger NWAY. */
130 void t21142_lnk_change(struct net_device
*dev
, int csr5
)
132 struct tulip_private
*tp
= netdev_priv(dev
);
133 void __iomem
*ioaddr
= tp
->base_addr
;
134 int csr12
= ioread32(ioaddr
+ CSR12
);
137 printk(KERN_INFO
"%s: 21143 link status interrupt %8.8x, CSR5 %x, "
138 "%8.8x.\n", dev
->name
, csr12
, csr5
, ioread32(ioaddr
+ CSR14
));
140 /* If NWay finished and we have a negotiated partner capability. */
141 if (tp
->nway
&& !tp
->nwayset
&& (csr12
& 0x7000) == 0x5000) {
143 int negotiated
= tp
->sym_advertise
& (csr12
>> 16);
144 tp
->lpar
= csr12
>> 16;
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;
152 if ((csr12
& 2) == 0 && (tp
->sym_advertise
& 0x0180))
155 tp
->full_duplex
= (tulip_media_cap
[dev
->if_port
] & MediaAlwaysFD
) ? 1:0;
157 if (tulip_debug
> 1) {
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
);
164 printk(KERN_INFO
"%s: Autonegotiation failed, using %s,"
165 " link beat status %4.4x.\n",
166 dev
->name
, medianame
[dev
->if_port
], csr12
);
171 for (i
= 0; i
< tp
->mtable
->leafcount
; i
++)
172 if (tp
->mtable
->mleaf
[i
].media
== dev
->if_port
) {
173 int startup
= ! ((tp
->chip_id
== DC21143
&& (tp
->revision
== 48 || tp
->revision
== 65)));
175 tulip_select_media(dev
, startup
);
181 tp
->csr6
= (dev
->if_port
& 1 ? 0x838E0000 : 0x82420000) | (tp
->csr6
& 0x20ff);
184 iowrite32(1, ioaddr
+ CSR13
);
186 #if 0 /* Restart shouldn't be needed. */
187 iowrite32(tp
->csr6
| RxOn
, ioaddr
+ CSR6
);
189 printk(KERN_DEBUG
"%s: Restarting Tx and Rx, CSR5 is %8.8x.\n",
190 dev
->name
, ioread32(ioaddr
+ CSR5
));
192 tulip_start_rxtx(tp
);
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) {
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",
222 } else if (!(csr12
& 4)) { /* 10mbps link beat good. */
224 printk(KERN_INFO
"%s: 21143 10mbps sensed media.\n",
227 } else if (tp
->nwayset
) {
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. */
233 printk(KERN_INFO
"%s: 21143 100baseTx sensed media.\n",
236 tp
->csr6
= 0x838E0000 | (tp
->csr6
& 0x20ff);
237 iowrite32(0x0003FF7F, ioaddr
+ CSR14
);
238 iowrite32(0x0301, ioaddr
+ CSR12
);
239 tulip_restart_rxtx(tp
);