[deliverable/linux.git] / drivers / net / ibm_newemac / debug.c

/*
 * drivers/net/ibm_newemac/debug.c
 *
 * Driver for PowerPC 4xx on-chip ethernet controller, debug print routines.
 *
 * Copyright 2007 Benjamin Herrenschmidt, IBM Corp.
 *                <benh@kernel.crashing.org>
 *
 * Based on the arch/ppc version of the driver:
 *
 * 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 "core.h"

static DEFINE_SPINLOCK(emac_dbg_lock);

static void emac_desc_dump(struct emac_instance *p)
{
	int i;
	printk("** EMAC %s TX BDs **\n"
	       " tx_cnt = %d tx_slot = %d ack_slot = %d\n",
	       p->ofdev->node->full_name,
	       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 %s RX BDs **\n"
	       " rx_slot = %d flags = 0x%lx rx_skb_size = %d rx_sync_size = %d\n"
	       " rx_sg_skb = 0x%p\n",
	       p->ofdev->node->full_name,
	       p->rx_slot, p->commac.flags, 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(struct emac_instance *dev)
{
	struct emac_regs __iomem *p = dev->emacp;
	const int xaht_regs = EMAC_XAHT_REGS(dev);
	u32 *gaht_base = emac_gaht_base(dev);
	u32 *iaht_base = emac_iaht_base(dev);
	int emac4sync = emac_has_feature(dev, EMAC_FTR_EMAC4SYNC);
	int n;

	printk("** EMAC %s 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",
	       dev->ofdev->node->full_name, 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)
	       );

	if (emac4sync)
		printk("MAR = %04x%08x MMAR = %04x%08x\n",
		       in_be32(&p->u0.emac4sync.mahr),
		       in_be32(&p->u0.emac4sync.malr),
		       in_be32(&p->u0.emac4sync.mmahr),
		       in_be32(&p->u0.emac4sync.mmalr)
		       );

	for (n = 0; n < xaht_regs; n++)
		printk("IAHT%02d = 0x%08x\n", n + 1, in_be32(iaht_base + n));

	for (n = 0; n < xaht_regs; n++)
		printk("GAHT%02d = 0x%08x\n", n + 1, in_be32(gaht_base + n));

	printk("LSA = %04x%08x IPGVR = 0x%04x\n"
	       "STACR = 0x%08x TRTR = 0x%08x RWMR = 0x%08x\n"
	       "OCTX = 0x%08x OCRX = 0x%08x\n",
	       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)
	       );

	if (!emac4sync) {
		printk("IPCR = 0x%08x\n",
		       in_be32(&p->u1.emac4.ipcr)
		       );
	} else {
		printk("REVID = 0x%08x TPC = 0x%08x\n",
		       in_be32(&p->u1.emac4sync.revid),
		       in_be32(&p->u1.emac4sync.tpc)
		       );
	}

	emac_desc_dump(dev);
}

static void emac_mal_dump(struct mal_instance *mal)
{
	int i;

	printk("** MAL %s 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->ofdev->node->full_name,
	       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 < mal->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 < mal->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 < mal->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 emac_instance *__emacs[4];
static struct mal_instance *__mals[1];

void emac_dbg_register(struct emac_instance *dev)
{
	unsigned long flags;
	int i;

	spin_lock_irqsave(&emac_dbg_lock, flags);
	for (i = 0; i < ARRAY_SIZE(__emacs); i++)
		if (__emacs[i] == NULL) {
			__emacs[i] = dev;
			break;
		}
	spin_unlock_irqrestore(&emac_dbg_lock, flags);
}

void emac_dbg_unregister(struct emac_instance *dev)
{
	unsigned long flags;
	int i;

	spin_lock_irqsave(&emac_dbg_lock, flags);
	for (i = 0; i < ARRAY_SIZE(__emacs); i++)
		if (__emacs[i] == dev) {
			__emacs[i] = NULL;
			break;
		}
	spin_unlock_irqrestore(&emac_dbg_lock, flags);
}

void mal_dbg_register(struct mal_instance *mal)
{
	unsigned long flags;
	int i;

	spin_lock_irqsave(&emac_dbg_lock, flags);
	for (i = 0; i < ARRAY_SIZE(__mals); i++)
		if (__mals[i] == NULL) {
			__mals[i] = mal;
			break;
		}
	spin_unlock_irqrestore(&emac_dbg_lock, flags);
}

void mal_dbg_unregister(struct mal_instance *mal)
{
	unsigned long flags;
	int i;

	spin_lock_irqsave(&emac_dbg_lock, flags);
	for (i = 0; i < ARRAY_SIZE(__mals); i++)
		if (__mals[i] == mal) {
			__mals[i] = NULL;
			break;
		}
	spin_unlock_irqrestore(&emac_dbg_lock, flags);
}

void emac_dbg_dump_all(void)
{
	unsigned int i;
	unsigned long flags;

	spin_lock_irqsave(&emac_dbg_lock, flags);

	for (i = 0; i < ARRAY_SIZE(__mals); ++i)
		if (__mals[i])
			emac_mal_dump(__mals[i]);

	for (i = 0; i < ARRAY_SIZE(__emacs); ++i)
		if (__emacs[i])
			emac_mac_dump(__emacs[i]);

	spin_unlock_irqrestore(&emac_dbg_lock, 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 */
Commit	Line	Data
1d3bb996 DG	1	/*
	2	* drivers/net/ibm_newemac/debug.c
	3	*
	4	* Driver for PowerPC 4xx on-chip ethernet controller, debug print routines.
	5	*
17cf803a BH	6	* Copyright 2007 Benjamin Herrenschmidt, IBM Corp.
	7	* <benh@kernel.crashing.org>
	8	*
	9	* Based on the arch/ppc version of the driver:
	10	*
1d3bb996 DG	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
47073875	29	static DEFINE_SPINLOCK(emac_dbg_lock);
1d3bb996 DG	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;
05781ccd GE	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;
1d3bb996 DG	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"
05781ccd	79	"IAR = %04x%08x VTPID = 0x%04x VTCI = 0x%04x\n",
1d3bb996 DG	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),
05781ccd GE	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",
1d3bb996 DG	104	in_be32(&p->lsah), in_be32(&p->lsal), in_be32(&p->ipgvr),
1d3bb996 DG	105	in_be32(&p->stacr), in_be32(&p->trtr), in_be32(&p->rwmr),
05781ccd GE	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	}
1d3bb996 DG	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 */