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