Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
[linux-2.6] / drivers / net / tulip / timer.c
1 /*
2         drivers/net/tulip/timer.c
3
4         Maintained by Valerie Henson <val_henson@linux.intel.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-user.{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 "tulip.h"
18
19
20 void tulip_media_task(struct work_struct *work)
21 {
22         struct tulip_private *tp =
23                 container_of(work, struct tulip_private, media_work);
24         struct net_device *dev = tp->dev;
25         void __iomem *ioaddr = tp->base_addr;
26         u32 csr12 = ioread32(ioaddr + CSR12);
27         int next_tick = 2*HZ;
28         unsigned long flags;
29
30         if (tulip_debug > 2) {
31                 printk(KERN_DEBUG "%s: Media selection tick, %s, status %8.8x mode"
32                            " %8.8x SIA %8.8x %8.8x %8.8x %8.8x.\n",
33                            dev->name, medianame[dev->if_port], ioread32(ioaddr + CSR5),
34                            ioread32(ioaddr + CSR6), csr12, ioread32(ioaddr + CSR13),
35                            ioread32(ioaddr + CSR14), ioread32(ioaddr + CSR15));
36         }
37         switch (tp->chip_id) {
38         case DC21140:
39         case DC21142:
40         case MX98713:
41         case COMPEX9881:
42         case DM910X:
43         default: {
44                 struct medialeaf *mleaf;
45                 unsigned char *p;
46                 if (tp->mtable == NULL) {       /* No EEPROM info, use generic code. */
47                         /* Not much that can be done.
48                            Assume this a generic MII or SYM transceiver. */
49                         next_tick = 60*HZ;
50                         if (tulip_debug > 2)
51                                 printk(KERN_DEBUG "%s: network media monitor CSR6 %8.8x "
52                                            "CSR12 0x%2.2x.\n",
53                                            dev->name, ioread32(ioaddr + CSR6), csr12 & 0xff);
54                         break;
55                 }
56                 mleaf = &tp->mtable->mleaf[tp->cur_index];
57                 p = mleaf->leafdata;
58                 switch (mleaf->type) {
59                 case 0: case 4: {
60                         /* Type 0 serial or 4 SYM transceiver.  Check the link beat bit. */
61                         int offset = mleaf->type == 4 ? 5 : 2;
62                         s8 bitnum = p[offset];
63                         if (p[offset+1] & 0x80) {
64                                 if (tulip_debug > 1)
65                                         printk(KERN_DEBUG"%s: Transceiver monitor tick "
66                                                    "CSR12=%#2.2x, no media sense.\n",
67                                                    dev->name, csr12);
68                                 if (mleaf->type == 4) {
69                                         if (mleaf->media == 3 && (csr12 & 0x02))
70                                                 goto select_next_media;
71                                 }
72                                 break;
73                         }
74                         if (tulip_debug > 2)
75                                 printk(KERN_DEBUG "%s: Transceiver monitor tick: CSR12=%#2.2x"
76                                            " bit %d is %d, expecting %d.\n",
77                                            dev->name, csr12, (bitnum >> 1) & 7,
78                                            (csr12 & (1 << ((bitnum >> 1) & 7))) != 0,
79                                            (bitnum >= 0));
80                         /* Check that the specified bit has the proper value. */
81                         if ((bitnum < 0) !=
82                                 ((csr12 & (1 << ((bitnum >> 1) & 7))) != 0)) {
83                                 if (tulip_debug > 2)
84                                         printk(KERN_DEBUG "%s: Link beat detected for %s.\n", dev->name,
85                                                medianame[mleaf->media & MEDIA_MASK]);
86                                 if ((p[2] & 0x61) == 0x01)      /* Bogus Znyx board. */
87                                         goto actually_mii;
88                                 netif_carrier_on(dev);
89                                 break;
90                         }
91                         netif_carrier_off(dev);
92                         if (tp->medialock)
93                                 break;
94           select_next_media:
95                         if (--tp->cur_index < 0) {
96                                 /* We start again, but should instead look for default. */
97                                 tp->cur_index = tp->mtable->leafcount - 1;
98                         }
99                         dev->if_port = tp->mtable->mleaf[tp->cur_index].media;
100                         if (tulip_media_cap[dev->if_port] & MediaIsFD)
101                                 goto select_next_media; /* Skip FD entries. */
102                         if (tulip_debug > 1)
103                                 printk(KERN_DEBUG "%s: No link beat on media %s,"
104                                        " trying transceiver type %s.\n",
105                                        dev->name, medianame[mleaf->media & MEDIA_MASK],
106                                        medianame[tp->mtable->mleaf[tp->cur_index].media]);
107                         tulip_select_media(dev, 0);
108                         /* Restart the transmit process. */
109                         tulip_restart_rxtx(tp);
110                         next_tick = (24*HZ)/10;
111                         break;
112                 }
113                 case 1:  case 3:                /* 21140, 21142 MII */
114                 actually_mii:
115                         if (tulip_check_duplex(dev) < 0) {
116                                 netif_carrier_off(dev);
117                                 next_tick = 3*HZ;
118                         } else {
119                                 netif_carrier_on(dev);
120                                 next_tick = 60*HZ;
121                         }
122                         break;
123                 case 2:                                 /* 21142 serial block has no link beat. */
124                 default:
125                         break;
126                 }
127         }
128         break;
129         }
130
131
132         spin_lock_irqsave(&tp->lock, flags);
133         if (tp->timeout_recovery) {
134                 tulip_tx_timeout_complete(tp, ioaddr);
135                 tp->timeout_recovery = 0;
136         }
137         spin_unlock_irqrestore(&tp->lock, flags);
138
139         /* mod_timer synchronizes us with potential add_timer calls
140          * from interrupts.
141          */
142         mod_timer(&tp->timer, RUN_AT(next_tick));
143 }
144
145
146 void mxic_timer(unsigned long data)
147 {
148         struct net_device *dev = (struct net_device *)data;
149         struct tulip_private *tp = netdev_priv(dev);
150         void __iomem *ioaddr = tp->base_addr;
151         int next_tick = 60*HZ;
152
153         if (tulip_debug > 3) {
154                 printk(KERN_INFO"%s: MXIC negotiation status %8.8x.\n", dev->name,
155                            ioread32(ioaddr + CSR12));
156         }
157         if (next_tick) {
158                 mod_timer(&tp->timer, RUN_AT(next_tick));
159         }
160 }
161
162
163 void comet_timer(unsigned long data)
164 {
165         struct net_device *dev = (struct net_device *)data;
166         struct tulip_private *tp = netdev_priv(dev);
167         int next_tick = 60*HZ;
168
169         if (tulip_debug > 1)
170                 printk(KERN_DEBUG "%s: Comet link status %4.4x partner capability "
171                            "%4.4x.\n",
172                            dev->name,
173                            tulip_mdio_read(dev, tp->phys[0], 1),
174                            tulip_mdio_read(dev, tp->phys[0], 5));
175         /* mod_timer synchronizes us with potential add_timer calls
176          * from interrupts.
177          */
178         if (tulip_check_duplex(dev) < 0)
179                 { netif_carrier_off(dev); }
180         else
181                 { netif_carrier_on(dev); }
182         mod_timer(&tp->timer, RUN_AT(next_tick));
183 }
184