/* * drivers/net/ibm_emac/ibm_emac_debug.c * * Driver for PowerPC 4xx on-chip ethernet controller, debug print routines. * * Copyright (c) 2004, 2005 Zultys Technologies * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net> * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. * */ #include <linux/init.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/netdevice.h> #include <linux/sysrq.h> #include <asm/io.h> #include "ibm_emac_core.h" static void emac_desc_dump(int idx, struct ocp_enet_private *p) { int i; printk("** EMAC%d TX BDs **\n" " tx_cnt = %d tx_slot = %d ack_slot = %d\n", idx, p->tx_cnt, p->tx_slot, p->ack_slot); for (i = 0; i < NUM_TX_BUFF / 2; ++i) printk ("bd[%2d] 0x%08x %c 0x%04x %4u - bd[%2d] 0x%08x %c 0x%04x %4u\n", i, p->tx_desc[i].data_ptr, p->tx_skb[i] ? 'V' : ' ', p->tx_desc[i].ctrl, p->tx_desc[i].data_len, NUM_TX_BUFF / 2 + i, p->tx_desc[NUM_TX_BUFF / 2 + i].data_ptr, p->tx_skb[NUM_TX_BUFF / 2 + i] ? 'V' : ' ', p->tx_desc[NUM_TX_BUFF / 2 + i].ctrl, p->tx_desc[NUM_TX_BUFF / 2 + i].data_len); printk("** EMAC%d RX BDs **\n" " rx_slot = %d rx_stopped = %d rx_skb_size = %d rx_sync_size = %d\n" " rx_sg_skb = 0x%p\n", idx, p->rx_slot, p->commac.rx_stopped, p->rx_skb_size, p->rx_sync_size, p->rx_sg_skb); for (i = 0; i < NUM_RX_BUFF / 2; ++i) printk ("bd[%2d] 0x%08x %c 0x%04x %4u - bd[%2d] 0x%08x %c 0x%04x %4u\n", i, p->rx_desc[i].data_ptr, p->rx_skb[i] ? 'V' : ' ', p->rx_desc[i].ctrl, p->rx_desc[i].data_len, NUM_RX_BUFF / 2 + i, p->rx_desc[NUM_RX_BUFF / 2 + i].data_ptr, p->rx_skb[NUM_RX_BUFF / 2 + i] ? 'V' : ' ', p->rx_desc[NUM_RX_BUFF / 2 + i].ctrl, p->rx_desc[NUM_RX_BUFF / 2 + i].data_len); } static void emac_mac_dump(int idx, struct ocp_enet_private *dev) { struct emac_regs __iomem *p = dev->emacp; printk("** EMAC%d registers **\n" "MR0 = 0x%08x MR1 = 0x%08x TMR0 = 0x%08x TMR1 = 0x%08x\n" "RMR = 0x%08x ISR = 0x%08x ISER = 0x%08x\n" "IAR = %04x%08x VTPID = 0x%04x VTCI = 0x%04x\n" "IAHT: 0x%04x 0x%04x 0x%04x 0x%04x " "GAHT: 0x%04x 0x%04x 0x%04x 0x%04x\n" "LSA = %04x%08x IPGVR = 0x%04x\n" "STACR = 0x%08x TRTR = 0x%08x RWMR = 0x%08x\n" "OCTX = 0x%08x OCRX = 0x%08x IPCR = 0x%08x\n", idx, in_be32(&p->mr0), in_be32(&p->mr1), in_be32(&p->tmr0), in_be32(&p->tmr1), in_be32(&p->rmr), in_be32(&p->isr), in_be32(&p->iser), in_be32(&p->iahr), in_be32(&p->ialr), in_be32(&p->vtpid), in_be32(&p->vtci), in_be32(&p->iaht1), in_be32(&p->iaht2), in_be32(&p->iaht3), in_be32(&p->iaht4), in_be32(&p->gaht1), in_be32(&p->gaht2), in_be32(&p->gaht3), in_be32(&p->gaht4), in_be32(&p->lsah), in_be32(&p->lsal), in_be32(&p->ipgvr), in_be32(&p->stacr), in_be32(&p->trtr), in_be32(&p->rwmr), in_be32(&p->octx), in_be32(&p->ocrx), in_be32(&p->ipcr) ); emac_desc_dump(idx, dev); } static void emac_mal_dump(struct ibm_ocp_mal *mal) { struct ocp_func_mal_data *maldata = mal->def->additions; int i; printk("** MAL%d Registers **\n" "CFG = 0x%08x ESR = 0x%08x IER = 0x%08x\n" "TX|CASR = 0x%08x CARR = 0x%08x EOBISR = 0x%08x DEIR = 0x%08x\n" "RX|CASR = 0x%08x CARR = 0x%08x EOBISR = 0x%08x DEIR = 0x%08x\n", mal->def->index, get_mal_dcrn(mal, MAL_CFG), get_mal_dcrn(mal, MAL_ESR), get_mal_dcrn(mal, MAL_IER), get_mal_dcrn(mal, MAL_TXCASR), get_mal_dcrn(mal, MAL_TXCARR), get_mal_dcrn(mal, MAL_TXEOBISR), get_mal_dcrn(mal, MAL_TXDEIR), get_mal_dcrn(mal, MAL_RXCASR), get_mal_dcrn(mal, MAL_RXCARR), get_mal_dcrn(mal, MAL_RXEOBISR), get_mal_dcrn(mal, MAL_RXDEIR) ); printk("TX|"); for (i = 0; i < maldata->num_tx_chans; ++i) { if (i && !(i % 4)) printk("\n "); printk("CTP%d = 0x%08x ", i, get_mal_dcrn(mal, MAL_TXCTPR(i))); } printk("\nRX|"); for (i = 0; i < maldata->num_rx_chans; ++i) { if (i && !(i % 4)) printk("\n "); printk("CTP%d = 0x%08x ", i, get_mal_dcrn(mal, MAL_RXCTPR(i))); } printk("\n "); for (i = 0; i < maldata->num_rx_chans; ++i) { u32 r = get_mal_dcrn(mal, MAL_RCBS(i)); if (i && !(i % 3)) printk("\n "); printk("RCBS%d = 0x%08x (%d) ", i, r, r * 16); } printk("\n"); } static struct ocp_enet_private *__emacs[4]; static struct ibm_ocp_mal *__mals[1]; void emac_dbg_register(int idx, struct ocp_enet_private *dev) { unsigned long flags; if (idx >= sizeof(__emacs) / sizeof(__emacs[0])) { printk(KERN_WARNING "invalid index %d when registering EMAC for debugging\n", idx); return; } local_irq_save(flags); __emacs[idx] = dev; local_irq_restore(flags); } void mal_dbg_register(int idx, struct ibm_ocp_mal *mal) { unsigned long flags; if (idx >= sizeof(__mals) / sizeof(__mals[0])) { printk(KERN_WARNING "invalid index %d when registering MAL for debugging\n", idx); return; } local_irq_save(flags); __mals[idx] = mal; local_irq_restore(flags); } void emac_dbg_dump_all(void) { unsigned int i; unsigned long flags; local_irq_save(flags); for (i = 0; i < sizeof(__mals) / sizeof(__mals[0]); ++i) if (__mals[i]) emac_mal_dump(__mals[i]); for (i = 0; i < sizeof(__emacs) / sizeof(__emacs[0]); ++i) if (__emacs[i]) emac_mac_dump(i, __emacs[i]); local_irq_restore(flags); } #if defined(CONFIG_MAGIC_SYSRQ) static void emac_sysrq_handler(int key, struct tty_struct *tty) { emac_dbg_dump_all(); } static struct sysrq_key_op emac_sysrq_op = { .handler = emac_sysrq_handler, .help_msg = "emaC", .action_msg = "Show EMAC(s) status", }; int __init emac_init_debug(void) { return register_sysrq_key('c', &emac_sysrq_op); } void __exit emac_fini_debug(void) { unregister_sysrq_key('c', &emac_sysrq_op); } #else int __init emac_init_debug(void) { return 0; } void __exit emac_fini_debug(void) { } #endif /* CONFIG_MAGIC_SYSRQ */