1 | /* |
2 | drivers/net/ethernet/dec/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 submit bugs to http://bugzilla.kernel.org/ . |
11 | */ |
12 | |
13 | |
14 | #include "tulip.h" |
15 | |
16 | |
17 | void tulip_media_task(struct work_struct *work) |
18 | { |
19 | struct tulip_private *tp = |
20 | container_of(work, struct tulip_private, media_work); |
21 | struct net_device *dev = tp->dev; |
22 | void __iomem *ioaddr = tp->base_addr; |
23 | u32 csr12 = ioread32(ioaddr + CSR12); |
24 | int next_tick = 2*HZ; |
25 | unsigned long flags; |
26 | |
27 | if (tulip_debug > 2) { |
28 | netdev_dbg(dev, "Media selection tick, %s, status %08x mode %08x SIA %08x %08x %08x %08x\n" , |
29 | medianame[dev->if_port], |
30 | ioread32(ioaddr + CSR5), ioread32(ioaddr + CSR6), |
31 | csr12, ioread32(ioaddr + CSR13), |
32 | ioread32(ioaddr + CSR14), ioread32(ioaddr + CSR15)); |
33 | } |
34 | switch (tp->chip_id) { |
35 | case DC21140: |
36 | case DC21142: |
37 | case MX98713: |
38 | case COMPEX9881: |
39 | case DM910X: |
40 | default: { |
41 | struct medialeaf *mleaf; |
42 | unsigned char *p; |
43 | if (tp->mtable == NULL) { /* No EEPROM info, use generic code. */ |
44 | /* Not much that can be done. |
45 | Assume this a generic MII or SYM transceiver. */ |
46 | next_tick = 60*HZ; |
47 | if (tulip_debug > 2) |
48 | netdev_dbg(dev, "network media monitor CSR6 %08x CSR12 0x%02x\n" , |
49 | ioread32(ioaddr + CSR6), |
50 | csr12 & 0xff); |
51 | break; |
52 | } |
53 | mleaf = &tp->mtable->mleaf[tp->cur_index]; |
54 | p = mleaf->leafdata; |
55 | switch (mleaf->type) { |
56 | case 0: case 4: { |
57 | /* Type 0 serial or 4 SYM transceiver. Check the link beat bit. */ |
58 | int offset = mleaf->type == 4 ? 5 : 2; |
59 | s8 bitnum = p[offset]; |
60 | if (p[offset+1] & 0x80) { |
61 | if (tulip_debug > 1) |
62 | netdev_dbg(dev, "Transceiver monitor tick CSR12=%#02x, no media sense\n" , |
63 | csr12); |
64 | if (mleaf->type == 4) { |
65 | if (mleaf->media == 3 && (csr12 & 0x02)) |
66 | goto select_next_media; |
67 | } |
68 | break; |
69 | } |
70 | if (tulip_debug > 2) |
71 | netdev_dbg(dev, "Transceiver monitor tick: CSR12=%#02x bit %d is %d, expecting %d\n" , |
72 | csr12, (bitnum >> 1) & 7, |
73 | (csr12 & (1 << ((bitnum >> 1) & 7))) != 0, |
74 | (bitnum >= 0)); |
75 | /* Check that the specified bit has the proper value. */ |
76 | if ((bitnum < 0) != |
77 | ((csr12 & (1 << ((bitnum >> 1) & 7))) != 0)) { |
78 | if (tulip_debug > 2) |
79 | netdev_dbg(dev, "Link beat detected for %s\n" , |
80 | medianame[mleaf->media & MEDIA_MASK]); |
81 | if ((p[2] & 0x61) == 0x01) /* Bogus Znyx board. */ |
82 | goto actually_mii; |
83 | netif_carrier_on(dev); |
84 | break; |
85 | } |
86 | netif_carrier_off(dev); |
87 | if (tp->medialock) |
88 | break; |
89 | select_next_media: |
90 | if (--tp->cur_index < 0) { |
91 | /* We start again, but should instead look for default. */ |
92 | tp->cur_index = tp->mtable->leafcount - 1; |
93 | } |
94 | dev->if_port = tp->mtable->mleaf[tp->cur_index].media; |
95 | if (tulip_media_cap[dev->if_port] & MediaIsFD) |
96 | goto select_next_media; /* Skip FD entries. */ |
97 | if (tulip_debug > 1) |
98 | netdev_dbg(dev, "No link beat on media %s, trying transceiver type %s\n" , |
99 | medianame[mleaf->media & MEDIA_MASK], |
100 | medianame[tp->mtable->mleaf[tp->cur_index].media]); |
101 | tulip_select_media(dev, startup: 0); |
102 | /* Restart the transmit process. */ |
103 | tulip_restart_rxtx(tp); |
104 | next_tick = (24*HZ)/10; |
105 | break; |
106 | } |
107 | case 1: case 3: /* 21140, 21142 MII */ |
108 | actually_mii: |
109 | if (tulip_check_duplex(dev) < 0) { |
110 | netif_carrier_off(dev); |
111 | next_tick = 3*HZ; |
112 | } else { |
113 | netif_carrier_on(dev); |
114 | next_tick = 60*HZ; |
115 | } |
116 | break; |
117 | case 2: /* 21142 serial block has no link beat. */ |
118 | default: |
119 | break; |
120 | } |
121 | } |
122 | break; |
123 | } |
124 | |
125 | |
126 | spin_lock_irqsave(&tp->lock, flags); |
127 | if (tp->timeout_recovery) { |
128 | tulip_tx_timeout_complete(tp, ioaddr); |
129 | tp->timeout_recovery = 0; |
130 | } |
131 | spin_unlock_irqrestore(lock: &tp->lock, flags); |
132 | |
133 | /* mod_timer synchronizes us with potential add_timer calls |
134 | * from interrupts. |
135 | */ |
136 | mod_timer(timer: &tp->timer, RUN_AT(next_tick)); |
137 | } |
138 | |
139 | |
140 | void mxic_timer(struct timer_list *t) |
141 | { |
142 | struct tulip_private *tp = from_timer(tp, t, timer); |
143 | struct net_device *dev = tp->dev; |
144 | void __iomem *ioaddr = tp->base_addr; |
145 | int next_tick = 60*HZ; |
146 | |
147 | if (tulip_debug > 3) { |
148 | dev_info(&dev->dev, "MXIC negotiation status %08x\n" , |
149 | ioread32(ioaddr + CSR12)); |
150 | } |
151 | if (next_tick) { |
152 | mod_timer(timer: &tp->timer, RUN_AT(next_tick)); |
153 | } |
154 | } |
155 | |
156 | |
157 | void comet_timer(struct timer_list *t) |
158 | { |
159 | struct tulip_private *tp = from_timer(tp, t, timer); |
160 | struct net_device *dev = tp->dev; |
161 | int next_tick = 2*HZ; |
162 | |
163 | if (tulip_debug > 1) |
164 | netdev_dbg(dev, "Comet link status %04x partner capability %04x\n" , |
165 | tulip_mdio_read(dev, tp->phys[0], 1), |
166 | tulip_mdio_read(dev, tp->phys[0], 5)); |
167 | /* mod_timer synchronizes us with potential add_timer calls |
168 | * from interrupts. |
169 | */ |
170 | if (tulip_check_duplex(dev) < 0) |
171 | { netif_carrier_off(dev); } |
172 | else |
173 | { netif_carrier_on(dev); } |
174 | mod_timer(timer: &tp->timer, RUN_AT(next_tick)); |
175 | } |
176 | |
177 | |