David Gibson | 1d3bb99 | 2007-08-23 13:56:01 +1000 | [diff] [blame] | 1 | /* |
| 2 | * drivers/net/ibm_newemac/debug.c |
| 3 | * |
| 4 | * Driver for PowerPC 4xx on-chip ethernet controller, debug print routines. |
| 5 | * |
Benjamin Herrenschmidt | 17cf803 | 2007-12-05 11:14:33 +1100 | [diff] [blame] | 6 | * Copyright 2007 Benjamin Herrenschmidt, IBM Corp. |
| 7 | * <benh@kernel.crashing.org> |
| 8 | * |
| 9 | * Based on the arch/ppc version of the driver: |
| 10 | * |
David Gibson | 1d3bb99 | 2007-08-23 13:56:01 +1000 | [diff] [blame] | 11 | * Copyright (c) 2004, 2005 Zultys Technologies |
| 12 | * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net> |
| 13 | * |
| 14 | * This program is free software; you can redistribute it and/or modify it |
| 15 | * under the terms of the GNU General Public License as published by the |
| 16 | * Free Software Foundation; either version 2 of the License, or (at your |
| 17 | * option) any later version. |
| 18 | * |
| 19 | */ |
| 20 | #include <linux/init.h> |
| 21 | #include <linux/module.h> |
| 22 | #include <linux/kernel.h> |
| 23 | #include <linux/netdevice.h> |
| 24 | #include <linux/sysrq.h> |
| 25 | #include <asm/io.h> |
| 26 | |
| 27 | #include "core.h" |
| 28 | |
Jiri Slaby | 4707387 | 2007-12-13 16:02:57 -0800 | [diff] [blame] | 29 | static DEFINE_SPINLOCK(emac_dbg_lock); |
David Gibson | 1d3bb99 | 2007-08-23 13:56:01 +1000 | [diff] [blame] | 30 | |
| 31 | static void emac_desc_dump(struct emac_instance *p) |
| 32 | { |
| 33 | int i; |
| 34 | printk("** EMAC %s TX BDs **\n" |
| 35 | " tx_cnt = %d tx_slot = %d ack_slot = %d\n", |
| 36 | p->ofdev->node->full_name, |
| 37 | p->tx_cnt, p->tx_slot, p->ack_slot); |
| 38 | for (i = 0; i < NUM_TX_BUFF / 2; ++i) |
| 39 | printk |
| 40 | ("bd[%2d] 0x%08x %c 0x%04x %4u - bd[%2d] 0x%08x %c 0x%04x %4u\n", |
| 41 | i, p->tx_desc[i].data_ptr, p->tx_skb[i] ? 'V' : ' ', |
| 42 | p->tx_desc[i].ctrl, p->tx_desc[i].data_len, |
| 43 | NUM_TX_BUFF / 2 + i, |
| 44 | p->tx_desc[NUM_TX_BUFF / 2 + i].data_ptr, |
| 45 | p->tx_skb[NUM_TX_BUFF / 2 + i] ? 'V' : ' ', |
| 46 | p->tx_desc[NUM_TX_BUFF / 2 + i].ctrl, |
| 47 | p->tx_desc[NUM_TX_BUFF / 2 + i].data_len); |
| 48 | |
| 49 | printk("** EMAC %s RX BDs **\n" |
| 50 | " rx_slot = %d flags = 0x%lx rx_skb_size = %d rx_sync_size = %d\n" |
| 51 | " rx_sg_skb = 0x%p\n", |
| 52 | p->ofdev->node->full_name, |
| 53 | p->rx_slot, p->commac.flags, p->rx_skb_size, |
| 54 | p->rx_sync_size, p->rx_sg_skb); |
| 55 | for (i = 0; i < NUM_RX_BUFF / 2; ++i) |
| 56 | printk |
| 57 | ("bd[%2d] 0x%08x %c 0x%04x %4u - bd[%2d] 0x%08x %c 0x%04x %4u\n", |
| 58 | i, p->rx_desc[i].data_ptr, p->rx_skb[i] ? 'V' : ' ', |
| 59 | p->rx_desc[i].ctrl, p->rx_desc[i].data_len, |
| 60 | NUM_RX_BUFF / 2 + i, |
| 61 | p->rx_desc[NUM_RX_BUFF / 2 + i].data_ptr, |
| 62 | p->rx_skb[NUM_RX_BUFF / 2 + i] ? 'V' : ' ', |
| 63 | p->rx_desc[NUM_RX_BUFF / 2 + i].ctrl, |
| 64 | p->rx_desc[NUM_RX_BUFF / 2 + i].data_len); |
| 65 | } |
| 66 | |
| 67 | static void emac_mac_dump(struct emac_instance *dev) |
| 68 | { |
| 69 | struct emac_regs __iomem *p = dev->emacp; |
Grant Erickson | 05781cc | 2008-07-08 08:03:11 +1000 | [diff] [blame^] | 70 | const int xaht_regs = EMAC_XAHT_REGS(dev); |
| 71 | u32 *gaht_base = emac_gaht_base(dev); |
| 72 | u32 *iaht_base = emac_iaht_base(dev); |
| 73 | int emac4sync = emac_has_feature(dev, EMAC_FTR_EMAC4SYNC); |
| 74 | int n; |
David Gibson | 1d3bb99 | 2007-08-23 13:56:01 +1000 | [diff] [blame] | 75 | |
| 76 | printk("** EMAC %s registers **\n" |
| 77 | "MR0 = 0x%08x MR1 = 0x%08x TMR0 = 0x%08x TMR1 = 0x%08x\n" |
| 78 | "RMR = 0x%08x ISR = 0x%08x ISER = 0x%08x\n" |
Grant Erickson | 05781cc | 2008-07-08 08:03:11 +1000 | [diff] [blame^] | 79 | "IAR = %04x%08x VTPID = 0x%04x VTCI = 0x%04x\n", |
David Gibson | 1d3bb99 | 2007-08-23 13:56:01 +1000 | [diff] [blame] | 80 | dev->ofdev->node->full_name, in_be32(&p->mr0), in_be32(&p->mr1), |
| 81 | in_be32(&p->tmr0), in_be32(&p->tmr1), |
| 82 | in_be32(&p->rmr), in_be32(&p->isr), in_be32(&p->iser), |
| 83 | in_be32(&p->iahr), in_be32(&p->ialr), in_be32(&p->vtpid), |
Grant Erickson | 05781cc | 2008-07-08 08:03:11 +1000 | [diff] [blame^] | 84 | in_be32(&p->vtci) |
| 85 | ); |
| 86 | |
| 87 | if (emac4sync) |
| 88 | printk("MAR = %04x%08x MMAR = %04x%08x\n", |
| 89 | in_be32(&p->u0.emac4sync.mahr), |
| 90 | in_be32(&p->u0.emac4sync.malr), |
| 91 | in_be32(&p->u0.emac4sync.mmahr), |
| 92 | in_be32(&p->u0.emac4sync.mmalr) |
| 93 | ); |
| 94 | |
| 95 | for (n = 0; n < xaht_regs; n++) |
| 96 | printk("IAHT%02d = 0x%08x\n", n + 1, in_be32(iaht_base + n)); |
| 97 | |
| 98 | for (n = 0; n < xaht_regs; n++) |
| 99 | printk("GAHT%02d = 0x%08x\n", n + 1, in_be32(gaht_base + n)); |
| 100 | |
| 101 | printk("LSA = %04x%08x IPGVR = 0x%04x\n" |
| 102 | "STACR = 0x%08x TRTR = 0x%08x RWMR = 0x%08x\n" |
| 103 | "OCTX = 0x%08x OCRX = 0x%08x\n", |
David Gibson | 1d3bb99 | 2007-08-23 13:56:01 +1000 | [diff] [blame] | 104 | in_be32(&p->lsah), in_be32(&p->lsal), in_be32(&p->ipgvr), |
| 105 | in_be32(&p->stacr), in_be32(&p->trtr), in_be32(&p->rwmr), |
Grant Erickson | 05781cc | 2008-07-08 08:03:11 +1000 | [diff] [blame^] | 106 | in_be32(&p->octx), in_be32(&p->ocrx) |
| 107 | ); |
| 108 | |
| 109 | if (!emac4sync) { |
| 110 | printk("IPCR = 0x%08x\n", |
| 111 | in_be32(&p->u1.emac4.ipcr) |
| 112 | ); |
| 113 | } else { |
| 114 | printk("REVID = 0x%08x TPC = 0x%08x\n", |
| 115 | in_be32(&p->u1.emac4sync.revid), |
| 116 | in_be32(&p->u1.emac4sync.tpc) |
| 117 | ); |
| 118 | } |
David Gibson | 1d3bb99 | 2007-08-23 13:56:01 +1000 | [diff] [blame] | 119 | |
| 120 | emac_desc_dump(dev); |
| 121 | } |
| 122 | |
| 123 | static void emac_mal_dump(struct mal_instance *mal) |
| 124 | { |
| 125 | int i; |
| 126 | |
| 127 | printk("** MAL %s Registers **\n" |
| 128 | "CFG = 0x%08x ESR = 0x%08x IER = 0x%08x\n" |
| 129 | "TX|CASR = 0x%08x CARR = 0x%08x EOBISR = 0x%08x DEIR = 0x%08x\n" |
| 130 | "RX|CASR = 0x%08x CARR = 0x%08x EOBISR = 0x%08x DEIR = 0x%08x\n", |
| 131 | mal->ofdev->node->full_name, |
| 132 | get_mal_dcrn(mal, MAL_CFG), get_mal_dcrn(mal, MAL_ESR), |
| 133 | get_mal_dcrn(mal, MAL_IER), |
| 134 | get_mal_dcrn(mal, MAL_TXCASR), get_mal_dcrn(mal, MAL_TXCARR), |
| 135 | get_mal_dcrn(mal, MAL_TXEOBISR), get_mal_dcrn(mal, MAL_TXDEIR), |
| 136 | get_mal_dcrn(mal, MAL_RXCASR), get_mal_dcrn(mal, MAL_RXCARR), |
| 137 | get_mal_dcrn(mal, MAL_RXEOBISR), get_mal_dcrn(mal, MAL_RXDEIR) |
| 138 | ); |
| 139 | |
| 140 | printk("TX|"); |
| 141 | for (i = 0; i < mal->num_tx_chans; ++i) { |
| 142 | if (i && !(i % 4)) |
| 143 | printk("\n "); |
| 144 | printk("CTP%d = 0x%08x ", i, get_mal_dcrn(mal, MAL_TXCTPR(i))); |
| 145 | } |
| 146 | printk("\nRX|"); |
| 147 | for (i = 0; i < mal->num_rx_chans; ++i) { |
| 148 | if (i && !(i % 4)) |
| 149 | printk("\n "); |
| 150 | printk("CTP%d = 0x%08x ", i, get_mal_dcrn(mal, MAL_RXCTPR(i))); |
| 151 | } |
| 152 | printk("\n "); |
| 153 | for (i = 0; i < mal->num_rx_chans; ++i) { |
| 154 | u32 r = get_mal_dcrn(mal, MAL_RCBS(i)); |
| 155 | if (i && !(i % 3)) |
| 156 | printk("\n "); |
| 157 | printk("RCBS%d = 0x%08x (%d) ", i, r, r * 16); |
| 158 | } |
| 159 | printk("\n"); |
| 160 | } |
| 161 | |
| 162 | static struct emac_instance *__emacs[4]; |
| 163 | static struct mal_instance *__mals[1]; |
| 164 | |
| 165 | void emac_dbg_register(struct emac_instance *dev) |
| 166 | { |
| 167 | unsigned long flags; |
| 168 | int i; |
| 169 | |
| 170 | spin_lock_irqsave(&emac_dbg_lock, flags); |
| 171 | for (i = 0; i < ARRAY_SIZE(__emacs); i++) |
| 172 | if (__emacs[i] == NULL) { |
| 173 | __emacs[i] = dev; |
| 174 | break; |
| 175 | } |
| 176 | spin_unlock_irqrestore(&emac_dbg_lock, flags); |
| 177 | } |
| 178 | |
| 179 | void emac_dbg_unregister(struct emac_instance *dev) |
| 180 | { |
| 181 | unsigned long flags; |
| 182 | int i; |
| 183 | |
| 184 | spin_lock_irqsave(&emac_dbg_lock, flags); |
| 185 | for (i = 0; i < ARRAY_SIZE(__emacs); i++) |
| 186 | if (__emacs[i] == dev) { |
| 187 | __emacs[i] = NULL; |
| 188 | break; |
| 189 | } |
| 190 | spin_unlock_irqrestore(&emac_dbg_lock, flags); |
| 191 | } |
| 192 | |
| 193 | void mal_dbg_register(struct mal_instance *mal) |
| 194 | { |
| 195 | unsigned long flags; |
| 196 | int i; |
| 197 | |
| 198 | spin_lock_irqsave(&emac_dbg_lock, flags); |
| 199 | for (i = 0; i < ARRAY_SIZE(__mals); i++) |
| 200 | if (__mals[i] == NULL) { |
| 201 | __mals[i] = mal; |
| 202 | break; |
| 203 | } |
| 204 | spin_unlock_irqrestore(&emac_dbg_lock, flags); |
| 205 | } |
| 206 | |
| 207 | void mal_dbg_unregister(struct mal_instance *mal) |
| 208 | { |
| 209 | unsigned long flags; |
| 210 | int i; |
| 211 | |
| 212 | spin_lock_irqsave(&emac_dbg_lock, flags); |
| 213 | for (i = 0; i < ARRAY_SIZE(__mals); i++) |
| 214 | if (__mals[i] == mal) { |
| 215 | __mals[i] = NULL; |
| 216 | break; |
| 217 | } |
| 218 | spin_unlock_irqrestore(&emac_dbg_lock, flags); |
| 219 | } |
| 220 | |
| 221 | void emac_dbg_dump_all(void) |
| 222 | { |
| 223 | unsigned int i; |
| 224 | unsigned long flags; |
| 225 | |
| 226 | spin_lock_irqsave(&emac_dbg_lock, flags); |
| 227 | |
| 228 | for (i = 0; i < ARRAY_SIZE(__mals); ++i) |
| 229 | if (__mals[i]) |
| 230 | emac_mal_dump(__mals[i]); |
| 231 | |
| 232 | for (i = 0; i < ARRAY_SIZE(__emacs); ++i) |
| 233 | if (__emacs[i]) |
| 234 | emac_mac_dump(__emacs[i]); |
| 235 | |
| 236 | spin_unlock_irqrestore(&emac_dbg_lock, flags); |
| 237 | } |
| 238 | |
| 239 | #if defined(CONFIG_MAGIC_SYSRQ) |
| 240 | static void emac_sysrq_handler(int key, struct tty_struct *tty) |
| 241 | { |
| 242 | emac_dbg_dump_all(); |
| 243 | } |
| 244 | |
| 245 | static struct sysrq_key_op emac_sysrq_op = { |
| 246 | .handler = emac_sysrq_handler, |
| 247 | .help_msg = "emaC", |
| 248 | .action_msg = "Show EMAC(s) status", |
| 249 | }; |
| 250 | |
| 251 | int __init emac_init_debug(void) |
| 252 | { |
| 253 | return register_sysrq_key('c', &emac_sysrq_op); |
| 254 | } |
| 255 | |
| 256 | void __exit emac_fini_debug(void) |
| 257 | { |
| 258 | unregister_sysrq_key('c', &emac_sysrq_op); |
| 259 | } |
| 260 | |
| 261 | #else |
| 262 | int __init emac_init_debug(void) |
| 263 | { |
| 264 | return 0; |
| 265 | } |
| 266 | void __exit emac_fini_debug(void) |
| 267 | { |
| 268 | } |
| 269 | #endif /* CONFIG_MAGIC_SYSRQ */ |