blob: 85a521e0d0526c0f879dff6346cea79984480631 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 drivers/net/tulip/pnic.c
3
Valerie Henson6b928012006-09-08 11:15:34 -07004 Maintained by Valerie Henson <val_henson@linux.intel.com>
Linus Torvalds1da177e2005-04-16 15:20:36 -07005 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/kernel.h>
18#include <linux/pci.h>
Marcelo Feitoza Parisiff5688a2006-01-09 18:37:15 -080019#include <linux/jiffies.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070020#include "tulip.h"
21
22
23void pnic_do_nway(struct net_device *dev)
24{
25 struct tulip_private *tp = netdev_priv(dev);
26 void __iomem *ioaddr = tp->base_addr;
27 u32 phy_reg = ioread32(ioaddr + 0xB8);
28 u32 new_csr6 = tp->csr6 & ~0x40C40200;
29
30 if (phy_reg & 0x78000000) { /* Ignore baseT4 */
31 if (phy_reg & 0x20000000) dev->if_port = 5;
32 else if (phy_reg & 0x40000000) dev->if_port = 3;
33 else if (phy_reg & 0x10000000) dev->if_port = 4;
34 else if (phy_reg & 0x08000000) dev->if_port = 0;
35 tp->nwayset = 1;
36 new_csr6 = (dev->if_port & 1) ? 0x01860000 : 0x00420000;
37 iowrite32(0x32 | (dev->if_port & 1), ioaddr + CSR12);
38 if (dev->if_port & 1)
39 iowrite32(0x1F868, ioaddr + 0xB8);
40 if (phy_reg & 0x30000000) {
41 tp->full_duplex = 1;
42 new_csr6 |= 0x00000200;
43 }
44 if (tulip_debug > 1)
45 printk(KERN_DEBUG "%s: PNIC autonegotiated status %8.8x, %s.\n",
46 dev->name, phy_reg, medianame[dev->if_port]);
47 if (tp->csr6 != new_csr6) {
48 tp->csr6 = new_csr6;
49 /* Restart Tx */
50 tulip_restart_rxtx(tp);
51 dev->trans_start = jiffies;
52 }
53 }
54}
55
56void pnic_lnk_change(struct net_device *dev, int csr5)
57{
58 struct tulip_private *tp = netdev_priv(dev);
59 void __iomem *ioaddr = tp->base_addr;
60 int phy_reg = ioread32(ioaddr + 0xB8);
61
62 if (tulip_debug > 1)
63 printk(KERN_DEBUG "%s: PNIC link changed state %8.8x, CSR5 %8.8x.\n",
64 dev->name, phy_reg, csr5);
65 if (ioread32(ioaddr + CSR5) & TPLnkFail) {
66 iowrite32((ioread32(ioaddr + CSR7) & ~TPLnkFail) | TPLnkPass, ioaddr + CSR7);
67 /* If we use an external MII, then we mustn't use the
68 * internal negotiation.
69 */
70 if (tulip_media_cap[dev->if_port] & MediaIsMII)
71 return;
Marcelo Feitoza Parisiff5688a2006-01-09 18:37:15 -080072 if (! tp->nwayset || time_after(jiffies, dev->trans_start + 1*HZ)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -070073 tp->csr6 = 0x00420000 | (tp->csr6 & 0x0000fdff);
74 iowrite32(tp->csr6, ioaddr + CSR6);
75 iowrite32(0x30, ioaddr + CSR12);
76 iowrite32(0x0201F078, ioaddr + 0xB8); /* Turn on autonegotiation. */
77 dev->trans_start = jiffies;
78 }
79 } else if (ioread32(ioaddr + CSR5) & TPLnkPass) {
80 if (tulip_media_cap[dev->if_port] & MediaIsMII) {
81 spin_lock(&tp->lock);
82 tulip_check_duplex(dev);
83 spin_unlock(&tp->lock);
84 } else {
85 pnic_do_nway(dev);
86 }
87 iowrite32((ioread32(ioaddr + CSR7) & ~TPLnkPass) | TPLnkFail, ioaddr + CSR7);
88 }
89}
90
91void pnic_timer(unsigned long data)
92{
93 struct net_device *dev = (struct net_device *)data;
94 struct tulip_private *tp = netdev_priv(dev);
95 void __iomem *ioaddr = tp->base_addr;
96 int next_tick = 60*HZ;
97
98 if(!ioread32(ioaddr + CSR7)) {
99 /* the timer was called due to a work overflow
100 * in the interrupt handler. Skip the connection
101 * checks, the nic is definitively speaking with
102 * his link partner.
103 */
104 goto too_good_connection;
105 }
106
107 if (tulip_media_cap[dev->if_port] & MediaIsMII) {
108 spin_lock_irq(&tp->lock);
109 if (tulip_check_duplex(dev) > 0)
110 next_tick = 3*HZ;
111 spin_unlock_irq(&tp->lock);
112 } else {
113 int csr12 = ioread32(ioaddr + CSR12);
114 int new_csr6 = tp->csr6 & ~0x40C40200;
115 int phy_reg = ioread32(ioaddr + 0xB8);
116 int csr5 = ioread32(ioaddr + CSR5);
117
118 if (tulip_debug > 1)
119 printk(KERN_DEBUG "%s: PNIC timer PHY status %8.8x, %s "
120 "CSR5 %8.8x.\n",
121 dev->name, phy_reg, medianame[dev->if_port], csr5);
122 if (phy_reg & 0x04000000) { /* Remote link fault */
123 iowrite32(0x0201F078, ioaddr + 0xB8);
124 next_tick = 1*HZ;
125 tp->nwayset = 0;
126 } else if (phy_reg & 0x78000000) { /* Ignore baseT4 */
127 pnic_do_nway(dev);
128 next_tick = 60*HZ;
129 } else if (csr5 & TPLnkFail) { /* 100baseTx link beat */
130 if (tulip_debug > 1)
131 printk(KERN_DEBUG "%s: %s link beat failed, CSR12 %4.4x, "
132 "CSR5 %8.8x, PHY %3.3x.\n",
133 dev->name, medianame[dev->if_port], csr12,
134 ioread32(ioaddr + CSR5), ioread32(ioaddr + 0xB8));
135 next_tick = 3*HZ;
136 if (tp->medialock) {
137 } else if (tp->nwayset && (dev->if_port & 1)) {
138 next_tick = 1*HZ;
139 } else if (dev->if_port == 0) {
140 dev->if_port = 3;
141 iowrite32(0x33, ioaddr + CSR12);
142 new_csr6 = 0x01860000;
143 iowrite32(0x1F868, ioaddr + 0xB8);
144 } else {
145 dev->if_port = 0;
146 iowrite32(0x32, ioaddr + CSR12);
147 new_csr6 = 0x00420000;
148 iowrite32(0x1F078, ioaddr + 0xB8);
149 }
150 if (tp->csr6 != new_csr6) {
151 tp->csr6 = new_csr6;
152 /* Restart Tx */
153 tulip_restart_rxtx(tp);
154 dev->trans_start = jiffies;
155 if (tulip_debug > 1)
156 printk(KERN_INFO "%s: Changing PNIC configuration to %s "
157 "%s-duplex, CSR6 %8.8x.\n",
158 dev->name, medianame[dev->if_port],
159 tp->full_duplex ? "full" : "half", new_csr6);
160 }
161 }
162 }
163too_good_connection:
164 mod_timer(&tp->timer, RUN_AT(next_tick));
165 if(!ioread32(ioaddr + CSR7)) {
166 if (tulip_debug > 1)
167 printk(KERN_INFO "%s: sw timer wakeup.\n", dev->name);
168 disable_irq(dev->irq);
169 tulip_refill_rx(dev);
170 enable_irq(dev->irq);
171 iowrite32(tulip_tbl[tp->chip_id].valid_intrs, ioaddr + CSR7);
172 }
173}