Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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 <linux/pci.h>
18#include "tulip.h"
19
20
21void tulip_media_task(struct work_struct *work)
22{
23 struct tulip_private *tp =
24 container_of(work, struct tulip_private, media_work);
25 struct net_device *dev = tp->dev;
26 void __iomem *ioaddr = tp->base_addr;
27 u32 csr12 = ioread32(ioaddr + CSR12);
28 int next_tick = 2*HZ;
29 unsigned long flags;
30
31 if (tulip_debug > 2) {
32 printk(KERN_DEBUG "%s: Media selection tick, %s, status %8.8x mode"
33 " %8.8x SIA %8.8x %8.8x %8.8x %8.8x.\n",
34 dev->name, medianame[dev->if_port], ioread32(ioaddr + CSR5),
35 ioread32(ioaddr + CSR6), csr12, ioread32(ioaddr + CSR13),
36 ioread32(ioaddr + CSR14), ioread32(ioaddr + CSR15));
37 }
38 switch (tp->chip_id) {
39 case DC21140:
40 case DC21142:
41 case MX98713:
42 case COMPEX9881:
43 case DM910X:
44 default: {
45 struct medialeaf *mleaf;
46 unsigned char *p;
47 if (tp->mtable == NULL) { /* No EEPROM info, use generic code. */
48 /* Not much that can be done.
49 Assume this a generic MII or SYM transceiver. */
50 next_tick = 60*HZ;
51 if (tulip_debug > 2)
52 printk(KERN_DEBUG "%s: network media monitor CSR6 %8.8x "
53 "CSR12 0x%2.2x.\n",
54 dev->name, ioread32(ioaddr + CSR6), csr12 & 0xff);
55 break;
56 }
57 mleaf = &tp->mtable->mleaf[tp->cur_index];
58 p = mleaf->leafdata;
59 switch (mleaf->type) {
60 case 0: case 4: {
61 /* Type 0 serial or 4 SYM transceiver. Check the link beat bit. */
62 int offset = mleaf->type == 4 ? 5 : 2;
63 s8 bitnum = p[offset];
64 if (p[offset+1] & 0x80) {
65 if (tulip_debug > 1)
66 printk(KERN_DEBUG"%s: Transceiver monitor tick "
67 "CSR12=%#2.2x, no media sense.\n",
68 dev->name, csr12);
69 if (mleaf->type == 4) {
70 if (mleaf->media == 3 && (csr12 & 0x02))
71 goto select_next_media;
72 }
73 break;
74 }
75 if (tulip_debug > 2)
76 printk(KERN_DEBUG "%s: Transceiver monitor tick: CSR12=%#2.2x"
77 " bit %d is %d, expecting %d.\n",
78 dev->name, csr12, (bitnum >> 1) & 7,
79 (csr12 & (1 << ((bitnum >> 1) & 7))) != 0,
80 (bitnum >= 0));
81 /* Check that the specified bit has the proper value. */
82 if ((bitnum < 0) !=
83 ((csr12 & (1 << ((bitnum >> 1) & 7))) != 0)) {
84 if (tulip_debug > 2)
85 printk(KERN_DEBUG "%s: Link beat detected for %s.\n", dev->name,
86 medianame[mleaf->media & MEDIA_MASK]);
87 if ((p[2] & 0x61) == 0x01) /* Bogus Znyx board. */
88 goto actually_mii;
89 netif_carrier_on(dev);
90 break;
91 }
92 netif_carrier_off(dev);
93 if (tp->medialock)
94 break;
95 select_next_media:
96 if (--tp->cur_index < 0) {
97 /* We start again, but should instead look for default. */
98 tp->cur_index = tp->mtable->leafcount - 1;
99 }
100 dev->if_port = tp->mtable->mleaf[tp->cur_index].media;
101 if (tulip_media_cap[dev->if_port] & MediaIsFD)
102 goto select_next_media; /* Skip FD entries. */
103 if (tulip_debug > 1)
104 printk(KERN_DEBUG "%s: No link beat on media %s,"
105 " trying transceiver type %s.\n",
106 dev->name, medianame[mleaf->media & MEDIA_MASK],
107 medianame[tp->mtable->mleaf[tp->cur_index].media]);
108 tulip_select_media(dev, 0);
109 /* Restart the transmit process. */
110 tulip_restart_rxtx(tp);
111 next_tick = (24*HZ)/10;
112 break;
113 }
114 case 1: case 3: /* 21140, 21142 MII */
115 actually_mii:
116 if (tulip_check_duplex(dev) < 0) {
117 netif_carrier_off(dev);
118 next_tick = 3*HZ;
119 } else {
120 netif_carrier_on(dev);
121 next_tick = 60*HZ;
122 }
123 break;
124 case 2: /* 21142 serial block has no link beat. */
125 default:
126 break;
127 }
128 }
129 break;
130 }
131
132
133 spin_lock_irqsave(&tp->lock, flags);
134 if (tp->timeout_recovery) {
135 tulip_tx_timeout_complete(tp, ioaddr);
136 tp->timeout_recovery = 0;
137 }
138 spin_unlock_irqrestore(&tp->lock, flags);
139
140 /* mod_timer synchronizes us with potential add_timer calls
141 * from interrupts.
142 */
143 mod_timer(&tp->timer, RUN_AT(next_tick));
144}
145
146
147void mxic_timer(unsigned long data)
148{
149 struct net_device *dev = (struct net_device *)data;
150 struct tulip_private *tp = netdev_priv(dev);
151 void __iomem *ioaddr = tp->base_addr;
152 int next_tick = 60*HZ;
153
154 if (tulip_debug > 3) {
155 printk(KERN_INFO"%s: MXIC negotiation status %8.8x.\n", dev->name,
156 ioread32(ioaddr + CSR12));
157 }
158 if (next_tick) {
159 mod_timer(&tp->timer, RUN_AT(next_tick));
160 }
161}
162
163
164void comet_timer(unsigned long data)
165{
166 struct net_device *dev = (struct net_device *)data;
167 struct tulip_private *tp = netdev_priv(dev);
168 int next_tick = 60*HZ;
169
170 if (tulip_debug > 1)
171 printk(KERN_DEBUG "%s: Comet link status %4.4x partner capability "
172 "%4.4x.\n",
173 dev->name,
174 tulip_mdio_read(dev, tp->phys[0], 1),
175 tulip_mdio_read(dev, tp->phys[0], 5));
176 /* mod_timer synchronizes us with potential add_timer calls
177 * from interrupts.
178 */
179 if (tulip_check_duplex(dev) < 0)
180 { netif_carrier_off(dev); }
181 else
182 { netif_carrier_on(dev); }
183 mod_timer(&tp->timer, RUN_AT(next_tick));
184}
185