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1da177e4 LT |
1 | /* |
2 | drivers/net/tulip/pnic.c | |
3 | ||
1da177e4 LT |
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} | |
78a65518 | 11 | for more information on this driver. |
1da177e4 | 12 | |
78a65518 | 13 | Please submit bugs to http://bugzilla.kernel.org/ . |
1da177e4 LT |
14 | */ |
15 | ||
16 | #include <linux/kernel.h> | |
ff5688ae | 17 | #include <linux/jiffies.h> |
1da177e4 LT |
18 | #include "tulip.h" |
19 | ||
20 | ||
21 | void pnic_do_nway(struct net_device *dev) | |
22 | { | |
23 | struct tulip_private *tp = netdev_priv(dev); | |
24 | void __iomem *ioaddr = tp->base_addr; | |
25 | u32 phy_reg = ioread32(ioaddr + 0xB8); | |
26 | u32 new_csr6 = tp->csr6 & ~0x40C40200; | |
27 | ||
28 | if (phy_reg & 0x78000000) { /* Ignore baseT4 */ | |
29 | if (phy_reg & 0x20000000) dev->if_port = 5; | |
30 | else if (phy_reg & 0x40000000) dev->if_port = 3; | |
31 | else if (phy_reg & 0x10000000) dev->if_port = 4; | |
32 | else if (phy_reg & 0x08000000) dev->if_port = 0; | |
33 | tp->nwayset = 1; | |
34 | new_csr6 = (dev->if_port & 1) ? 0x01860000 : 0x00420000; | |
35 | iowrite32(0x32 | (dev->if_port & 1), ioaddr + CSR12); | |
36 | if (dev->if_port & 1) | |
37 | iowrite32(0x1F868, ioaddr + 0xB8); | |
38 | if (phy_reg & 0x30000000) { | |
39 | tp->full_duplex = 1; | |
40 | new_csr6 |= 0x00000200; | |
41 | } | |
42 | if (tulip_debug > 1) | |
1df8bbd1 JP |
43 | printk(KERN_DEBUG "%s: PNIC autonegotiated status %08x, %s\n", |
44 | dev->name, phy_reg, medianame[dev->if_port]); | |
1da177e4 LT |
45 | if (tp->csr6 != new_csr6) { |
46 | tp->csr6 = new_csr6; | |
47 | /* Restart Tx */ | |
48 | tulip_restart_rxtx(tp); | |
49 | dev->trans_start = jiffies; | |
50 | } | |
51 | } | |
52 | } | |
53 | ||
54 | void pnic_lnk_change(struct net_device *dev, int csr5) | |
55 | { | |
56 | struct tulip_private *tp = netdev_priv(dev); | |
57 | void __iomem *ioaddr = tp->base_addr; | |
58 | int phy_reg = ioread32(ioaddr + 0xB8); | |
59 | ||
60 | if (tulip_debug > 1) | |
1df8bbd1 JP |
61 | printk(KERN_DEBUG "%s: PNIC link changed state %08x, CSR5 %08x\n", |
62 | dev->name, phy_reg, csr5); | |
1da177e4 LT |
63 | if (ioread32(ioaddr + CSR5) & TPLnkFail) { |
64 | iowrite32((ioread32(ioaddr + CSR7) & ~TPLnkFail) | TPLnkPass, ioaddr + CSR7); | |
65 | /* If we use an external MII, then we mustn't use the | |
66 | * internal negotiation. | |
67 | */ | |
68 | if (tulip_media_cap[dev->if_port] & MediaIsMII) | |
69 | return; | |
1ae5dc34 | 70 | if (! tp->nwayset || time_after(jiffies, dev_trans_start(dev) + 1*HZ)) { |
1da177e4 LT |
71 | tp->csr6 = 0x00420000 | (tp->csr6 & 0x0000fdff); |
72 | iowrite32(tp->csr6, ioaddr + CSR6); | |
73 | iowrite32(0x30, ioaddr + CSR12); | |
74 | iowrite32(0x0201F078, ioaddr + 0xB8); /* Turn on autonegotiation. */ | |
75 | dev->trans_start = jiffies; | |
76 | } | |
77 | } else if (ioread32(ioaddr + CSR5) & TPLnkPass) { | |
78 | if (tulip_media_cap[dev->if_port] & MediaIsMII) { | |
79 | spin_lock(&tp->lock); | |
80 | tulip_check_duplex(dev); | |
81 | spin_unlock(&tp->lock); | |
82 | } else { | |
83 | pnic_do_nway(dev); | |
84 | } | |
85 | iowrite32((ioread32(ioaddr + CSR7) & ~TPLnkPass) | TPLnkFail, ioaddr + CSR7); | |
86 | } | |
87 | } | |
88 | ||
89 | void pnic_timer(unsigned long data) | |
90 | { | |
91 | struct net_device *dev = (struct net_device *)data; | |
92 | struct tulip_private *tp = netdev_priv(dev); | |
93 | void __iomem *ioaddr = tp->base_addr; | |
94 | int next_tick = 60*HZ; | |
95 | ||
96 | if(!ioread32(ioaddr + CSR7)) { | |
97 | /* the timer was called due to a work overflow | |
98 | * in the interrupt handler. Skip the connection | |
99 | * checks, the nic is definitively speaking with | |
100 | * his link partner. | |
101 | */ | |
102 | goto too_good_connection; | |
103 | } | |
104 | ||
105 | if (tulip_media_cap[dev->if_port] & MediaIsMII) { | |
106 | spin_lock_irq(&tp->lock); | |
107 | if (tulip_check_duplex(dev) > 0) | |
108 | next_tick = 3*HZ; | |
109 | spin_unlock_irq(&tp->lock); | |
110 | } else { | |
111 | int csr12 = ioread32(ioaddr + CSR12); | |
112 | int new_csr6 = tp->csr6 & ~0x40C40200; | |
113 | int phy_reg = ioread32(ioaddr + 0xB8); | |
114 | int csr5 = ioread32(ioaddr + CSR5); | |
115 | ||
116 | if (tulip_debug > 1) | |
1df8bbd1 JP |
117 | printk(KERN_DEBUG "%s: PNIC timer PHY status %08x, %s CSR5 %08x\n", |
118 | dev->name, phy_reg, medianame[dev->if_port], csr5); | |
1da177e4 LT |
119 | if (phy_reg & 0x04000000) { /* Remote link fault */ |
120 | iowrite32(0x0201F078, ioaddr + 0xB8); | |
121 | next_tick = 1*HZ; | |
122 | tp->nwayset = 0; | |
123 | } else if (phy_reg & 0x78000000) { /* Ignore baseT4 */ | |
124 | pnic_do_nway(dev); | |
125 | next_tick = 60*HZ; | |
126 | } else if (csr5 & TPLnkFail) { /* 100baseTx link beat */ | |
127 | if (tulip_debug > 1) | |
1df8bbd1 JP |
128 | printk(KERN_DEBUG "%s: %s link beat failed, CSR12 %04x, CSR5 %08x, PHY %03x\n", |
129 | dev->name, medianame[dev->if_port], | |
130 | csr12, | |
131 | ioread32(ioaddr + CSR5), | |
132 | ioread32(ioaddr + 0xB8)); | |
1da177e4 LT |
133 | next_tick = 3*HZ; |
134 | if (tp->medialock) { | |
135 | } else if (tp->nwayset && (dev->if_port & 1)) { | |
136 | next_tick = 1*HZ; | |
137 | } else if (dev->if_port == 0) { | |
138 | dev->if_port = 3; | |
139 | iowrite32(0x33, ioaddr + CSR12); | |
140 | new_csr6 = 0x01860000; | |
141 | iowrite32(0x1F868, ioaddr + 0xB8); | |
142 | } else { | |
143 | dev->if_port = 0; | |
144 | iowrite32(0x32, ioaddr + CSR12); | |
145 | new_csr6 = 0x00420000; | |
146 | iowrite32(0x1F078, ioaddr + 0xB8); | |
147 | } | |
148 | if (tp->csr6 != new_csr6) { | |
149 | tp->csr6 = new_csr6; | |
150 | /* Restart Tx */ | |
151 | tulip_restart_rxtx(tp); | |
152 | dev->trans_start = jiffies; | |
153 | if (tulip_debug > 1) | |
1df8bbd1 JP |
154 | dev_info(&dev->dev, |
155 | "Changing PNIC configuration to %s %s-duplex, CSR6 %08x\n", | |
156 | medianame[dev->if_port], | |
157 | tp->full_duplex ? "full" : "half", | |
158 | new_csr6); | |
1da177e4 LT |
159 | } |
160 | } | |
161 | } | |
162 | too_good_connection: | |
163 | mod_timer(&tp->timer, RUN_AT(next_tick)); | |
164 | if(!ioread32(ioaddr + CSR7)) { | |
165 | if (tulip_debug > 1) | |
1df8bbd1 | 166 | dev_info(&dev->dev, "sw timer wakeup\n"); |
1da177e4 LT |
167 | disable_irq(dev->irq); |
168 | tulip_refill_rx(dev); | |
169 | enable_irq(dev->irq); | |
170 | iowrite32(tulip_tbl[tp->chip_id].valid_intrs, ioaddr + CSR7); | |
171 | } | |
172 | } |