Merge branches 'omap1-upstream' and 'omap2-upstream' into devel
[linux-2.6] / drivers / net / ibm_newemac / debug.c
1 /*
2  * drivers/net/ibm_newemac/debug.c
3  *
4  * Driver for PowerPC 4xx on-chip ethernet controller, debug print routines.
5  *
6  * Copyright (c) 2004, 2005 Zultys Technologies
7  * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
8  *
9  * This program is free software; you can redistribute  it and/or modify it
10  * under  the terms of  the GNU General  Public License as published by the
11  * Free Software Foundation;  either version 2 of the  License, or (at your
12  * option) any later version.
13  *
14  */
15 #include <linux/init.h>
16 #include <linux/module.h>
17 #include <linux/kernel.h>
18 #include <linux/netdevice.h>
19 #include <linux/sysrq.h>
20 #include <asm/io.h>
21
22 #include "core.h"
23
24 static spinlock_t emac_dbg_lock = SPIN_LOCK_UNLOCKED;
25
26 static void emac_desc_dump(struct emac_instance *p)
27 {
28         int i;
29         printk("** EMAC %s TX BDs **\n"
30                " tx_cnt = %d tx_slot = %d ack_slot = %d\n",
31                p->ofdev->node->full_name,
32                p->tx_cnt, p->tx_slot, p->ack_slot);
33         for (i = 0; i < NUM_TX_BUFF / 2; ++i)
34                 printk
35                     ("bd[%2d] 0x%08x %c 0x%04x %4u - bd[%2d] 0x%08x %c 0x%04x %4u\n",
36                      i, p->tx_desc[i].data_ptr, p->tx_skb[i] ? 'V' : ' ',
37                      p->tx_desc[i].ctrl, p->tx_desc[i].data_len,
38                      NUM_TX_BUFF / 2 + i,
39                      p->tx_desc[NUM_TX_BUFF / 2 + i].data_ptr,
40                      p->tx_skb[NUM_TX_BUFF / 2 + i] ? 'V' : ' ',
41                      p->tx_desc[NUM_TX_BUFF / 2 + i].ctrl,
42                      p->tx_desc[NUM_TX_BUFF / 2 + i].data_len);
43
44         printk("** EMAC %s RX BDs **\n"
45                " rx_slot = %d flags = 0x%lx rx_skb_size = %d rx_sync_size = %d\n"
46                " rx_sg_skb = 0x%p\n",
47                p->ofdev->node->full_name,
48                p->rx_slot, p->commac.flags, p->rx_skb_size,
49                p->rx_sync_size, p->rx_sg_skb);
50         for (i = 0; i < NUM_RX_BUFF / 2; ++i)
51                 printk
52                     ("bd[%2d] 0x%08x %c 0x%04x %4u - bd[%2d] 0x%08x %c 0x%04x %4u\n",
53                      i, p->rx_desc[i].data_ptr, p->rx_skb[i] ? 'V' : ' ',
54                      p->rx_desc[i].ctrl, p->rx_desc[i].data_len,
55                      NUM_RX_BUFF / 2 + i,
56                      p->rx_desc[NUM_RX_BUFF / 2 + i].data_ptr,
57                      p->rx_skb[NUM_RX_BUFF / 2 + i] ? 'V' : ' ',
58                      p->rx_desc[NUM_RX_BUFF / 2 + i].ctrl,
59                      p->rx_desc[NUM_RX_BUFF / 2 + i].data_len);
60 }
61
62 static void emac_mac_dump(struct emac_instance *dev)
63 {
64         struct emac_regs __iomem *p = dev->emacp;
65
66         printk("** EMAC %s registers **\n"
67                "MR0 = 0x%08x MR1 = 0x%08x TMR0 = 0x%08x TMR1 = 0x%08x\n"
68                "RMR = 0x%08x ISR = 0x%08x ISER = 0x%08x\n"
69                "IAR = %04x%08x VTPID = 0x%04x VTCI = 0x%04x\n"
70                "IAHT: 0x%04x 0x%04x 0x%04x 0x%04x "
71                "GAHT: 0x%04x 0x%04x 0x%04x 0x%04x\n"
72                "LSA = %04x%08x IPGVR = 0x%04x\n"
73                "STACR = 0x%08x TRTR = 0x%08x RWMR = 0x%08x\n"
74                "OCTX = 0x%08x OCRX = 0x%08x IPCR = 0x%08x\n",
75                dev->ofdev->node->full_name, in_be32(&p->mr0), in_be32(&p->mr1),
76                in_be32(&p->tmr0), in_be32(&p->tmr1),
77                in_be32(&p->rmr), in_be32(&p->isr), in_be32(&p->iser),
78                in_be32(&p->iahr), in_be32(&p->ialr), in_be32(&p->vtpid),
79                in_be32(&p->vtci),
80                in_be32(&p->iaht1), in_be32(&p->iaht2), in_be32(&p->iaht3),
81                in_be32(&p->iaht4),
82                in_be32(&p->gaht1), in_be32(&p->gaht2), in_be32(&p->gaht3),
83                in_be32(&p->gaht4),
84                in_be32(&p->lsah), in_be32(&p->lsal), in_be32(&p->ipgvr),
85                in_be32(&p->stacr), in_be32(&p->trtr), in_be32(&p->rwmr),
86                in_be32(&p->octx), in_be32(&p->ocrx), in_be32(&p->ipcr)
87             );
88
89         emac_desc_dump(dev);
90 }
91
92 static void emac_mal_dump(struct mal_instance *mal)
93 {
94         int i;
95
96         printk("** MAL %s Registers **\n"
97                "CFG = 0x%08x ESR = 0x%08x IER = 0x%08x\n"
98                "TX|CASR = 0x%08x CARR = 0x%08x EOBISR = 0x%08x DEIR = 0x%08x\n"
99                "RX|CASR = 0x%08x CARR = 0x%08x EOBISR = 0x%08x DEIR = 0x%08x\n",
100                mal->ofdev->node->full_name,
101                get_mal_dcrn(mal, MAL_CFG), get_mal_dcrn(mal, MAL_ESR),
102                get_mal_dcrn(mal, MAL_IER),
103                get_mal_dcrn(mal, MAL_TXCASR), get_mal_dcrn(mal, MAL_TXCARR),
104                get_mal_dcrn(mal, MAL_TXEOBISR), get_mal_dcrn(mal, MAL_TXDEIR),
105                get_mal_dcrn(mal, MAL_RXCASR), get_mal_dcrn(mal, MAL_RXCARR),
106                get_mal_dcrn(mal, MAL_RXEOBISR), get_mal_dcrn(mal, MAL_RXDEIR)
107             );
108
109         printk("TX|");
110         for (i = 0; i < mal->num_tx_chans; ++i) {
111                 if (i && !(i % 4))
112                         printk("\n   ");
113                 printk("CTP%d = 0x%08x ", i, get_mal_dcrn(mal, MAL_TXCTPR(i)));
114         }
115         printk("\nRX|");
116         for (i = 0; i < mal->num_rx_chans; ++i) {
117                 if (i && !(i % 4))
118                         printk("\n   ");
119                 printk("CTP%d = 0x%08x ", i, get_mal_dcrn(mal, MAL_RXCTPR(i)));
120         }
121         printk("\n   ");
122         for (i = 0; i < mal->num_rx_chans; ++i) {
123                 u32 r = get_mal_dcrn(mal, MAL_RCBS(i));
124                 if (i && !(i % 3))
125                         printk("\n   ");
126                 printk("RCBS%d = 0x%08x (%d) ", i, r, r * 16);
127         }
128         printk("\n");
129 }
130
131 static struct emac_instance *__emacs[4];
132 static struct mal_instance *__mals[1];
133
134 void emac_dbg_register(struct emac_instance *dev)
135 {
136         unsigned long flags;
137         int i;
138
139         spin_lock_irqsave(&emac_dbg_lock, flags);
140         for (i = 0; i < ARRAY_SIZE(__emacs); i++)
141                 if (__emacs[i] == NULL) {
142                         __emacs[i] = dev;
143                         break;
144                 }
145         spin_unlock_irqrestore(&emac_dbg_lock, flags);
146 }
147
148 void emac_dbg_unregister(struct emac_instance *dev)
149 {
150         unsigned long flags;
151         int i;
152
153         spin_lock_irqsave(&emac_dbg_lock, flags);
154         for (i = 0; i < ARRAY_SIZE(__emacs); i++)
155                 if (__emacs[i] == dev) {
156                         __emacs[i] = NULL;
157                         break;
158                 }
159         spin_unlock_irqrestore(&emac_dbg_lock, flags);
160 }
161
162 void mal_dbg_register(struct mal_instance *mal)
163 {
164         unsigned long flags;
165         int i;
166
167         spin_lock_irqsave(&emac_dbg_lock, flags);
168         for (i = 0; i < ARRAY_SIZE(__mals); i++)
169                 if (__mals[i] == NULL) {
170                         __mals[i] = mal;
171                         break;
172                 }
173         spin_unlock_irqrestore(&emac_dbg_lock, flags);
174 }
175
176 void mal_dbg_unregister(struct mal_instance *mal)
177 {
178         unsigned long flags;
179         int i;
180
181         spin_lock_irqsave(&emac_dbg_lock, flags);
182         for (i = 0; i < ARRAY_SIZE(__mals); i++)
183                 if (__mals[i] == mal) {
184                         __mals[i] = NULL;
185                         break;
186                 }
187         spin_unlock_irqrestore(&emac_dbg_lock, flags);
188 }
189
190 void emac_dbg_dump_all(void)
191 {
192         unsigned int i;
193         unsigned long flags;
194
195         spin_lock_irqsave(&emac_dbg_lock, flags);
196
197         for (i = 0; i < ARRAY_SIZE(__mals); ++i)
198                 if (__mals[i])
199                         emac_mal_dump(__mals[i]);
200
201         for (i = 0; i < ARRAY_SIZE(__emacs); ++i)
202                 if (__emacs[i])
203                         emac_mac_dump(__emacs[i]);
204
205         spin_unlock_irqrestore(&emac_dbg_lock, flags);
206 }
207
208 #if defined(CONFIG_MAGIC_SYSRQ)
209 static void emac_sysrq_handler(int key, struct tty_struct *tty)
210 {
211         emac_dbg_dump_all();
212 }
213
214 static struct sysrq_key_op emac_sysrq_op = {
215         .handler = emac_sysrq_handler,
216         .help_msg = "emaC",
217         .action_msg = "Show EMAC(s) status",
218 };
219
220 int __init emac_init_debug(void)
221 {
222         return register_sysrq_key('c', &emac_sysrq_op);
223 }
224
225 void __exit emac_fini_debug(void)
226 {
227         unregister_sysrq_key('c', &emac_sysrq_op);
228 }
229
230 #else
231 int __init emac_init_debug(void)
232 {
233         return 0;
234 }
235 void __exit emac_fini_debug(void)
236 {
237 }
238 #endif                          /* CONFIG_MAGIC_SYSRQ */