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linux/drivers/net/ibm_newemac/debug.c
Grant Erickson 05781ccd74 ibm_newemac: Parameterize EMAC Multicast Match Handling 
Various instances of the EMAC core have varying: 1) number of address
match slots, 2) width of the registers for handling address match slots,
3) number of registers for handling address match slots and 4) base
offset for those registers.

As the driver stands today, it assumes that all EMACs have 4 IAHT and
GAHT 32-bit registers, starting at offset 0x30 from the register base,
with only 16-bits of each used for a total of 64 match slots.

The 405EX(r) and 460EX now use the EMAC4SYNC core rather than the EMAC4
core. This core has 8 IAHT and GAHT registers, starting at offset 0x80
from the register base, with ALL 32-bits of each used for a total of
256 match slots.

This adds a new compatible device tree entry "emac4sync" and a new,
related feature flag "EMAC_FTR_EMAC4SYNC" along with a series of macros
and inlines which supply the appropriate parameterized value based on
the presence or absence of the EMAC4SYNC feature.

The code has further been reworked where appropriate to use those macros
and inlines.

In addition, the register size passed to ioremap is now taken from the
device tree:

	c4 for EMAC4SYNC cores
	74 for EMAC4 cores
	70 for EMAC cores

rather than sizeof (emac_regs).

Finally, the device trees have been updated with the appropriate compatible
entries and resource sizes.

This has been tested on an AMCC Haleakala board such that: 1) inbound
ICMP requests to 'haleakala.local' via MDNS from both Mac OS X 10.4.11
and Ubuntu 8.04 systems as well as 2) outbound ICMP requests from
'haleakala.local' to those same systems in the '.local' domain via MDNS
now work.

Signed-off-by: Grant Erickson <gerickson@nuovations.com>
Acked-by: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-07-09 16:30:46 +10:00

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/*
* 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 */
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