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1da177e4 LT |
1 | /* |
2 | drivers/net/tulip/pnic.c | |
3 | ||
6b92801b | 4 | Maintained by Valerie Henson <val_henson@linux.intel.com> |
1da177e4 LT |
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/kernel.h> | |
ff5688ae | 18 | #include <linux/jiffies.h> |
1da177e4 LT |
19 | #include "tulip.h" |
20 | ||
21 | ||
22 | void pnic_do_nway(struct net_device *dev) | |
23 | { | |
24 | struct tulip_private *tp = netdev_priv(dev); | |
25 | void __iomem *ioaddr = tp->base_addr; | |
26 | u32 phy_reg = ioread32(ioaddr + 0xB8); | |
27 | u32 new_csr6 = tp->csr6 & ~0x40C40200; | |
28 | ||
29 | if (phy_reg & 0x78000000) { /* Ignore baseT4 */ | |
30 | if (phy_reg & 0x20000000) dev->if_port = 5; | |
31 | else if (phy_reg & 0x40000000) dev->if_port = 3; | |
32 | else if (phy_reg & 0x10000000) dev->if_port = 4; | |
33 | else if (phy_reg & 0x08000000) dev->if_port = 0; | |
34 | tp->nwayset = 1; | |
35 | new_csr6 = (dev->if_port & 1) ? 0x01860000 : 0x00420000; | |
36 | iowrite32(0x32 | (dev->if_port & 1), ioaddr + CSR12); | |
37 | if (dev->if_port & 1) | |
38 | iowrite32(0x1F868, ioaddr + 0xB8); | |
39 | if (phy_reg & 0x30000000) { | |
40 | tp->full_duplex = 1; | |
41 | new_csr6 |= 0x00000200; | |
42 | } | |
43 | if (tulip_debug > 1) | |
44 | printk(KERN_DEBUG "%s: PNIC autonegotiated status %8.8x, %s.\n", | |
45 | dev->name, phy_reg, medianame[dev->if_port]); | |
46 | if (tp->csr6 != new_csr6) { | |
47 | tp->csr6 = new_csr6; | |
48 | /* Restart Tx */ | |
49 | tulip_restart_rxtx(tp); | |
50 | dev->trans_start = jiffies; | |
51 | } | |
52 | } | |
53 | } | |
54 | ||
55 | void pnic_lnk_change(struct net_device *dev, int csr5) | |
56 | { | |
57 | struct tulip_private *tp = netdev_priv(dev); | |
58 | void __iomem *ioaddr = tp->base_addr; | |
59 | int phy_reg = ioread32(ioaddr + 0xB8); | |
60 | ||
61 | if (tulip_debug > 1) | |
62 | printk(KERN_DEBUG "%s: PNIC link changed state %8.8x, CSR5 %8.8x.\n", | |
63 | dev->name, phy_reg, csr5); | |
64 | if (ioread32(ioaddr + CSR5) & TPLnkFail) { | |
65 | iowrite32((ioread32(ioaddr + CSR7) & ~TPLnkFail) | TPLnkPass, ioaddr + CSR7); | |
66 | /* If we use an external MII, then we mustn't use the | |
67 | * internal negotiation. | |
68 | */ | |
69 | if (tulip_media_cap[dev->if_port] & MediaIsMII) | |
70 | return; | |
ff5688ae | 71 | if (! tp->nwayset || time_after(jiffies, dev->trans_start + 1*HZ)) { |
1da177e4 LT |
72 | tp->csr6 = 0x00420000 | (tp->csr6 & 0x0000fdff); |
73 | iowrite32(tp->csr6, ioaddr + CSR6); | |
74 | iowrite32(0x30, ioaddr + CSR12); | |
75 | iowrite32(0x0201F078, ioaddr + 0xB8); /* Turn on autonegotiation. */ | |
76 | dev->trans_start = jiffies; | |
77 | } | |
78 | } else if (ioread32(ioaddr + CSR5) & TPLnkPass) { | |
79 | if (tulip_media_cap[dev->if_port] & MediaIsMII) { | |
80 | spin_lock(&tp->lock); | |
81 | tulip_check_duplex(dev); | |
82 | spin_unlock(&tp->lock); | |
83 | } else { | |
84 | pnic_do_nway(dev); | |
85 | } | |
86 | iowrite32((ioread32(ioaddr + CSR7) & ~TPLnkPass) | TPLnkFail, ioaddr + CSR7); | |
87 | } | |
88 | } | |
89 | ||
90 | void pnic_timer(unsigned long data) | |
91 | { | |
92 | struct net_device *dev = (struct net_device *)data; | |
93 | struct tulip_private *tp = netdev_priv(dev); | |
94 | void __iomem *ioaddr = tp->base_addr; | |
95 | int next_tick = 60*HZ; | |
96 | ||
97 | if(!ioread32(ioaddr + CSR7)) { | |
98 | /* the timer was called due to a work overflow | |
99 | * in the interrupt handler. Skip the connection | |
100 | * checks, the nic is definitively speaking with | |
101 | * his link partner. | |
102 | */ | |
103 | goto too_good_connection; | |
104 | } | |
105 | ||
106 | if (tulip_media_cap[dev->if_port] & MediaIsMII) { | |
107 | spin_lock_irq(&tp->lock); | |
108 | if (tulip_check_duplex(dev) > 0) | |
109 | next_tick = 3*HZ; | |
110 | spin_unlock_irq(&tp->lock); | |
111 | } else { | |
112 | int csr12 = ioread32(ioaddr + CSR12); | |
113 | int new_csr6 = tp->csr6 & ~0x40C40200; | |
114 | int phy_reg = ioread32(ioaddr + 0xB8); | |
115 | int csr5 = ioread32(ioaddr + CSR5); | |
116 | ||
117 | if (tulip_debug > 1) | |
118 | printk(KERN_DEBUG "%s: PNIC timer PHY status %8.8x, %s " | |
119 | "CSR5 %8.8x.\n", | |
120 | dev->name, phy_reg, medianame[dev->if_port], csr5); | |
121 | if (phy_reg & 0x04000000) { /* Remote link fault */ | |
122 | iowrite32(0x0201F078, ioaddr + 0xB8); | |
123 | next_tick = 1*HZ; | |
124 | tp->nwayset = 0; | |
125 | } else if (phy_reg & 0x78000000) { /* Ignore baseT4 */ | |
126 | pnic_do_nway(dev); | |
127 | next_tick = 60*HZ; | |
128 | } else if (csr5 & TPLnkFail) { /* 100baseTx link beat */ | |
129 | if (tulip_debug > 1) | |
130 | printk(KERN_DEBUG "%s: %s link beat failed, CSR12 %4.4x, " | |
131 | "CSR5 %8.8x, PHY %3.3x.\n", | |
132 | dev->name, medianame[dev->if_port], csr12, | |
133 | ioread32(ioaddr + CSR5), ioread32(ioaddr + 0xB8)); | |
134 | next_tick = 3*HZ; | |
135 | if (tp->medialock) { | |
136 | } else if (tp->nwayset && (dev->if_port & 1)) { | |
137 | next_tick = 1*HZ; | |
138 | } else if (dev->if_port == 0) { | |
139 | dev->if_port = 3; | |
140 | iowrite32(0x33, ioaddr + CSR12); | |
141 | new_csr6 = 0x01860000; | |
142 | iowrite32(0x1F868, ioaddr + 0xB8); | |
143 | } else { | |
144 | dev->if_port = 0; | |
145 | iowrite32(0x32, ioaddr + CSR12); | |
146 | new_csr6 = 0x00420000; | |
147 | iowrite32(0x1F078, ioaddr + 0xB8); | |
148 | } | |
149 | if (tp->csr6 != new_csr6) { | |
150 | tp->csr6 = new_csr6; | |
151 | /* Restart Tx */ | |
152 | tulip_restart_rxtx(tp); | |
153 | dev->trans_start = jiffies; | |
154 | if (tulip_debug > 1) | |
155 | printk(KERN_INFO "%s: Changing PNIC configuration to %s " | |
156 | "%s-duplex, CSR6 %8.8x.\n", | |
157 | dev->name, medianame[dev->if_port], | |
158 | tp->full_duplex ? "full" : "half", new_csr6); | |
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) | |
166 | printk(KERN_INFO "%s: sw timer wakeup.\n", dev->name); | |
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 | } |