1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
|
/*
drivers/net/tulip/pnic.c
Copyright 2000,2001 The Linux Kernel Team
Written/copyright 1994-2001 by Donald Becker.
This software may be used and distributed according to the terms
of the GNU General Public License, incorporated herein by reference.
Please refer to Documentation/DocBook/tulip-user.{pdf,ps,html}
for more information on this driver.
Please submit bugs to http://bugzilla.kernel.org/ .
*/
#include <linux/kernel.h>
#include <linux/jiffies.h>
#include "tulip.h"
void pnic_do_nway(struct net_device *dev)
{
struct tulip_private *tp = netdev_priv(dev);
void __iomem *ioaddr = tp->base_addr;
u32 phy_reg = ioread32(ioaddr + 0xB8);
u32 new_csr6 = tp->csr6 & ~0x40C40200;
if (phy_reg & 0x78000000) { /* Ignore baseT4 */
if (phy_reg & 0x20000000) dev->if_port = 5;
else if (phy_reg & 0x40000000) dev->if_port = 3;
else if (phy_reg & 0x10000000) dev->if_port = 4;
else if (phy_reg & 0x08000000) dev->if_port = 0;
tp->nwayset = 1;
new_csr6 = (dev->if_port & 1) ? 0x01860000 : 0x00420000;
iowrite32(0x32 | (dev->if_port & 1), ioaddr + CSR12);
if (dev->if_port & 1)
iowrite32(0x1F868, ioaddr + 0xB8);
if (phy_reg & 0x30000000) {
tp->full_duplex = 1;
new_csr6 |= 0x00000200;
}
if (tulip_debug > 1)
netdev_dbg(dev, "PNIC autonegotiated status %08x, %s\n",
phy_reg, medianame[dev->if_port]);
if (tp->csr6 != new_csr6) {
tp->csr6 = new_csr6;
/* Restart Tx */
tulip_restart_rxtx(tp);
dev->trans_start = jiffies;
}
}
}
void pnic_lnk_change(struct net_device *dev, int csr5)
{
struct tulip_private *tp = netdev_priv(dev);
void __iomem *ioaddr = tp->base_addr;
int phy_reg = ioread32(ioaddr + 0xB8);
if (tulip_debug > 1)
netdev_dbg(dev, "PNIC link changed state %08x, CSR5 %08x\n",
phy_reg, csr5);
if (ioread32(ioaddr + CSR5) & TPLnkFail) {
iowrite32((ioread32(ioaddr + CSR7) & ~TPLnkFail) | TPLnkPass, ioaddr + CSR7);
/* If we use an external MII, then we mustn't use the
* internal negotiation.
*/
if (tulip_media_cap[dev->if_port] & MediaIsMII)
return;
if (! tp->nwayset || time_after(jiffies, dev_trans_start(dev) + 1*HZ)) {
tp->csr6 = 0x00420000 | (tp->csr6 & 0x0000fdff);
iowrite32(tp->csr6, ioaddr + CSR6);
iowrite32(0x30, ioaddr + CSR12);
iowrite32(0x0201F078, ioaddr + 0xB8); /* Turn on autonegotiation. */
dev->trans_start = jiffies;
}
} else if (ioread32(ioaddr + CSR5) & TPLnkPass) {
if (tulip_media_cap[dev->if_port] & MediaIsMII) {
spin_lock(&tp->lock);
tulip_check_duplex(dev);
spin_unlock(&tp->lock);
} else {
pnic_do_nway(dev);
}
iowrite32((ioread32(ioaddr + CSR7) & ~TPLnkPass) | TPLnkFail, ioaddr + CSR7);
}
}
void pnic_timer(unsigned long data)
{
struct net_device *dev = (struct net_device *)data;
struct tulip_private *tp = netdev_priv(dev);
void __iomem *ioaddr = tp->base_addr;
int next_tick = 60*HZ;
if(!ioread32(ioaddr + CSR7)) {
/* the timer was called due to a work overflow
* in the interrupt handler. Skip the connection
* checks, the nic is definitively speaking with
* his link partner.
*/
goto too_good_connection;
}
if (tulip_media_cap[dev->if_port] & MediaIsMII) {
spin_lock_irq(&tp->lock);
if (tulip_check_duplex(dev) > 0)
next_tick = 3*HZ;
spin_unlock_irq(&tp->lock);
} else {
int csr12 = ioread32(ioaddr + CSR12);
int new_csr6 = tp->csr6 & ~0x40C40200;
int phy_reg = ioread32(ioaddr + 0xB8);
int csr5 = ioread32(ioaddr + CSR5);
if (tulip_debug > 1)
netdev_dbg(dev, "PNIC timer PHY status %08x, %s CSR5 %08x\n",
phy_reg, medianame[dev->if_port], csr5);
if (phy_reg & 0x04000000) { /* Remote link fault */
iowrite32(0x0201F078, ioaddr + 0xB8);
next_tick = 1*HZ;
tp->nwayset = 0;
} else if (phy_reg & 0x78000000) { /* Ignore baseT4 */
pnic_do_nway(dev);
next_tick = 60*HZ;
} else if (csr5 & TPLnkFail) { /* 100baseTx link beat */
if (tulip_debug > 1)
netdev_dbg(dev, "%s link beat failed, CSR12 %04x, CSR5 %08x, PHY %03x\n",
medianame[dev->if_port],
csr12,
ioread32(ioaddr + CSR5),
ioread32(ioaddr + 0xB8));
next_tick = 3*HZ;
if (tp->medialock) {
} else if (tp->nwayset && (dev->if_port & 1)) {
next_tick = 1*HZ;
} else if (dev->if_port == 0) {
dev->if_port = 3;
iowrite32(0x33, ioaddr + CSR12);
new_csr6 = 0x01860000;
iowrite32(0x1F868, ioaddr + 0xB8);
} else {
dev->if_port = 0;
iowrite32(0x32, ioaddr + CSR12);
new_csr6 = 0x00420000;
iowrite32(0x1F078, ioaddr + 0xB8);
}
if (tp->csr6 != new_csr6) {
tp->csr6 = new_csr6;
/* Restart Tx */
tulip_restart_rxtx(tp);
dev->trans_start = jiffies;
if (tulip_debug > 1)
dev_info(&dev->dev,
"Changing PNIC configuration to %s %s-duplex, CSR6 %08x\n",
medianame[dev->if_port],
tp->full_duplex ? "full" : "half",
new_csr6);
}
}
}
too_good_connection:
mod_timer(&tp->timer, RUN_AT(next_tick));
if(!ioread32(ioaddr + CSR7)) {
if (tulip_debug > 1)
dev_info(&dev->dev, "sw timer wakeup\n");
disable_irq(dev->irq);
tulip_refill_rx(dev);
enable_irq(dev->irq);
iowrite32(tulip_tbl[tp->chip_id].valid_intrs, ioaddr + CSR7);
}
}
|
