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 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 refer to Documentation/DocBook/tulip-user.{pdf,ps,html}
11 for more information on this driver.
12
13 Please submit bugs to http://bugzilla.kernel.org/ .
14*/
15
16
17#include "tulip.h"
18
19
20void 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 netdev_dbg(dev, "Media selection tick, %s, status %08x mode %08x SIA %08x %08x %08x %08x\n",
32 medianame[dev->if_port],
33 ioread32(ioaddr + CSR5), ioread32(ioaddr + CSR6),
34 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 netdev_dbg(dev, "network media monitor CSR6 %08x CSR12 0x%02x\n",
52 ioread32(ioaddr + CSR6),
53 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 netdev_dbg(dev, "Transceiver monitor tick CSR12=%#02x, no media sense\n",
66 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 netdev_dbg(dev, "Transceiver monitor tick: CSR12=%#02x bit %d is %d, expecting %d\n",
75 csr12, (bitnum >> 1) & 7,
76 (csr12 & (1 << ((bitnum >> 1) & 7))) != 0,
77 (bitnum >= 0));
78 /* Check that the specified bit has the proper value. */
79 if ((bitnum < 0) !=
80 ((csr12 & (1 << ((bitnum >> 1) & 7))) != 0)) {
81 if (tulip_debug > 2)
82 netdev_dbg(dev, "Link beat detected for %s\n",
83 medianame[mleaf->media & MEDIA_MASK]);
84 if ((p[2] & 0x61) == 0x01) /* Bogus Znyx board. */
85 goto actually_mii;
86 netif_carrier_on(dev);
87 break;
88 }
89 netif_carrier_off(dev);
90 if (tp->medialock)
91 break;
92 select_next_media:
93 if (--tp->cur_index < 0) {
94 /* We start again, but should instead look for default. */
95 tp->cur_index = tp->mtable->leafcount - 1;
96 }
97 dev->if_port = tp->mtable->mleaf[tp->cur_index].media;
98 if (tulip_media_cap[dev->if_port] & MediaIsFD)
99 goto select_next_media; /* Skip FD entries. */
100 if (tulip_debug > 1)
101 netdev_dbg(dev, "No link beat on media %s, trying transceiver type %s\n",
102 medianame[mleaf->media & MEDIA_MASK],
103 medianame[tp->mtable->mleaf[tp->cur_index].media]);
104 tulip_select_media(dev, 0);
105 /* Restart the transmit process. */
106 tulip_restart_rxtx(tp);
107 next_tick = (24*HZ)/10;
108 break;
109 }
110 case 1: case 3: /* 21140, 21142 MII */
111 actually_mii:
112 if (tulip_check_duplex(dev) < 0) {
113 netif_carrier_off(dev);
114 next_tick = 3*HZ;
115 } else {
116 netif_carrier_on(dev);
117 next_tick = 60*HZ;
118 }
119 break;
120 case 2: /* 21142 serial block has no link beat. */
121 default:
122 break;
123 }
124 }
125 break;
126 }
127
128
129 spin_lock_irqsave(&tp->lock, flags);
130 if (tp->timeout_recovery) {
131 tulip_tx_timeout_complete(tp, ioaddr);
132 tp->timeout_recovery = 0;
133 }
134 spin_unlock_irqrestore(&tp->lock, flags);
135
136 /* mod_timer synchronizes us with potential add_timer calls
137 * from interrupts.
138 */
139 mod_timer(&tp->timer, RUN_AT(next_tick));
140}
141
142
143void mxic_timer(unsigned long data)
144{
145 struct net_device *dev = (struct net_device *)data;
146 struct tulip_private *tp = netdev_priv(dev);
147 void __iomem *ioaddr = tp->base_addr;
148 int next_tick = 60*HZ;
149
150 if (tulip_debug > 3) {
151 dev_info(&dev->dev, "MXIC negotiation status %08x\n",
152 ioread32(ioaddr + CSR12));
153 }
154 if (next_tick) {
155 mod_timer(&tp->timer, RUN_AT(next_tick));
156 }
157}
158
159
160void comet_timer(unsigned long data)
161{
162 struct net_device *dev = (struct net_device *)data;
163 struct tulip_private *tp = netdev_priv(dev);
164 int next_tick = 60*HZ;
165
166 if (tulip_debug > 1)
167 netdev_dbg(dev, "Comet link status %04x partner capability %04x\n",
168 tulip_mdio_read(dev, tp->phys[0], 1),
169 tulip_mdio_read(dev, tp->phys[0], 5));
170 /* mod_timer synchronizes us with potential add_timer calls
171 * from interrupts.
172 */
173 if (tulip_check_duplex(dev) < 0)
174 { netif_carrier_off(dev); }
175 else
176 { netif_carrier_on(dev); }
177 mod_timer(&tp->timer, RUN_AT(next_tick));
178}
179