| /* |
| * 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/config.h> |
| #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 pt_regs *pt_regs, |
| 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 */ |