doc: fix broken references
[linux-2.6.git] / drivers / net / tulip / timer.c
1 /*
2         drivers/net/tulip/timer.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 submit bugs to http://bugzilla.kernel.org/ .
11 */
12
13
14 #include "tulip.h"
15
16
17 void tulip_media_task(struct work_struct *work)
18 {
19         struct tulip_private *tp =
20                 container_of(work, struct tulip_private, media_work);
21         struct net_device *dev = tp->dev;
22         void __iomem *ioaddr = tp->base_addr;
23         u32 csr12 = ioread32(ioaddr + CSR12);
24         int next_tick = 2*HZ;
25         unsigned long flags;
26
27         if (tulip_debug > 2) {
28                 netdev_dbg(dev, "Media selection tick, %s, status %08x mode %08x SIA %08x %08x %08x %08x\n",
29                            medianame[dev->if_port],
30                            ioread32(ioaddr + CSR5), ioread32(ioaddr + CSR6),
31                            csr12, ioread32(ioaddr + CSR13),
32                            ioread32(ioaddr + CSR14), ioread32(ioaddr + CSR15));
33         }
34         switch (tp->chip_id) {
35         case DC21140:
36         case DC21142:
37         case MX98713:
38         case COMPEX9881:
39         case DM910X:
40         default: {
41                 struct medialeaf *mleaf;
42                 unsigned char *p;
43                 if (tp->mtable == NULL) {       /* No EEPROM info, use generic code. */
44                         /* Not much that can be done.
45                            Assume this a generic MII or SYM transceiver. */
46                         next_tick = 60*HZ;
47                         if (tulip_debug > 2)
48                                 netdev_dbg(dev, "network media monitor CSR6 %08x CSR12 0x%02x\n",
49                                            ioread32(ioaddr + CSR6),
50                                            csr12 & 0xff);
51                         break;
52                 }
53                 mleaf = &tp->mtable->mleaf[tp->cur_index];
54                 p = mleaf->leafdata;
55                 switch (mleaf->type) {
56                 case 0: case 4: {
57                         /* Type 0 serial or 4 SYM transceiver.  Check the link beat bit. */
58                         int offset = mleaf->type == 4 ? 5 : 2;
59                         s8 bitnum = p[offset];
60                         if (p[offset+1] & 0x80) {
61                                 if (tulip_debug > 1)
62                                         netdev_dbg(dev, "Transceiver monitor tick CSR12=%#02x, no media sense\n",
63                                                    csr12);
64                                 if (mleaf->type == 4) {
65                                         if (mleaf->media == 3 && (csr12 & 0x02))
66                                                 goto select_next_media;
67                                 }
68                                 break;
69                         }
70                         if (tulip_debug > 2)
71                                 netdev_dbg(dev, "Transceiver monitor tick: CSR12=%#02x bit %d is %d, expecting %d\n",
72                                            csr12, (bitnum >> 1) & 7,
73                                            (csr12 & (1 << ((bitnum >> 1) & 7))) != 0,
74                                            (bitnum >= 0));
75                         /* Check that the specified bit has the proper value. */
76                         if ((bitnum < 0) !=
77                                 ((csr12 & (1 << ((bitnum >> 1) & 7))) != 0)) {
78                                 if (tulip_debug > 2)
79                                         netdev_dbg(dev, "Link beat detected for %s\n",
80                                                    medianame[mleaf->media & MEDIA_MASK]);
81                                 if ((p[2] & 0x61) == 0x01)      /* Bogus Znyx board. */
82                                         goto actually_mii;
83                                 netif_carrier_on(dev);
84                                 break;
85                         }
86                         netif_carrier_off(dev);
87                         if (tp->medialock)
88                                 break;
89           select_next_media:
90                         if (--tp->cur_index < 0) {
91                                 /* We start again, but should instead look for default. */
92                                 tp->cur_index = tp->mtable->leafcount - 1;
93                         }
94                         dev->if_port = tp->mtable->mleaf[tp->cur_index].media;
95                         if (tulip_media_cap[dev->if_port] & MediaIsFD)
96                                 goto select_next_media; /* Skip FD entries. */
97                         if (tulip_debug > 1)
98                                 netdev_dbg(dev, "No link beat on media %s, trying transceiver type %s\n",
99                                            medianame[mleaf->media & MEDIA_MASK],
100                                            medianame[tp->mtable->mleaf[tp->cur_index].media]);
101                         tulip_select_media(dev, 0);
102                         /* Restart the transmit process. */
103                         tulip_restart_rxtx(tp);
104                         next_tick = (24*HZ)/10;
105                         break;
106                 }
107                 case 1:  case 3:                /* 21140, 21142 MII */
108                 actually_mii:
109                         if (tulip_check_duplex(dev) < 0) {
110                                 netif_carrier_off(dev);
111                                 next_tick = 3*HZ;
112                         } else {
113                                 netif_carrier_on(dev);
114                                 next_tick = 60*HZ;
115                         }
116                         break;
117                 case 2:                                 /* 21142 serial block has no link beat. */
118                 default:
119                         break;
120                 }
121         }
122         break;
123         }
124
125
126         spin_lock_irqsave(&tp->lock, flags);
127         if (tp->timeout_recovery) {
128                 tulip_tx_timeout_complete(tp, ioaddr);
129                 tp->timeout_recovery = 0;
130         }
131         spin_unlock_irqrestore(&tp->lock, flags);
132
133         /* mod_timer synchronizes us with potential add_timer calls
134          * from interrupts.
135          */
136         mod_timer(&tp->timer, RUN_AT(next_tick));
137 }
138
139
140 void mxic_timer(unsigned long data)
141 {
142         struct net_device *dev = (struct net_device *)data;
143         struct tulip_private *tp = netdev_priv(dev);
144         void __iomem *ioaddr = tp->base_addr;
145         int next_tick = 60*HZ;
146
147         if (tulip_debug > 3) {
148                 dev_info(&dev->dev, "MXIC negotiation status %08x\n",
149                          ioread32(ioaddr + CSR12));
150         }
151         if (next_tick) {
152                 mod_timer(&tp->timer, RUN_AT(next_tick));
153         }
154 }
155
156
157 void comet_timer(unsigned long data)
158 {
159         struct net_device *dev = (struct net_device *)data;
160         struct tulip_private *tp = netdev_priv(dev);
161         int next_tick = 60*HZ;
162
163         if (tulip_debug > 1)
164                 netdev_dbg(dev, "Comet link status %04x partner capability %04x\n",
165                            tulip_mdio_read(dev, tp->phys[0], 1),
166                            tulip_mdio_read(dev, tp->phys[0], 5));
167         /* mod_timer synchronizes us with potential add_timer calls
168          * from interrupts.
169          */
170         if (tulip_check_duplex(dev) < 0)
171                 { netif_carrier_off(dev); }
172         else
173                 { netif_carrier_on(dev); }
174         mod_timer(&tp->timer, RUN_AT(next_tick));
175 }
176