tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
21void 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
136void 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
153void 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