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/* $OpenBSD: cn30xxasx.c,v 1.3 2012/12/05 23:20:14 deraadt Exp $ */
/*
* Copyright (c) 2007 Internet Initiative Japan, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <machine/octeonvar.h>
#include <octeon/dev/cn30xxasxreg.h>
#include <octeon/dev/cn30xxasxvar.h>
#ifdef OCTEON_ETH_DEBUG
void cn30xxasx_intr_evcnt_attach(struct cn30xxasx_softc *);
void cn30xxasx_intr_rml(void *);
#endif
#ifdef OCTEON_ETH_DEBUG
struct cn30xxasx_softc *__cn30xxasx_softc;
#endif
/* XXX */
void
cn30xxasx_init(struct cn30xxasx_attach_args *aa,
struct cn30xxasx_softc **rsc)
{
struct cn30xxasx_softc *sc;
int status;
sc = malloc(sizeof(*sc), M_DEVBUF, M_WAITOK | M_ZERO);
if (sc == NULL)
panic("can't allocate memory: %s", __func__);
sc->sc_port = aa->aa_port;
sc->sc_regt = aa->aa_regt;
status = bus_space_map(sc->sc_regt, ASX0_BASE, ASX0_SIZE, 0,
&sc->sc_regh);
if (status != 0)
panic("can't map %s space", "asx register");
*rsc = sc;
#ifdef OCTEON_ETH_DEBUG
cn30xxasx_intr_evcnt_attach(sc);
if (__cn30xxasx_softc == NULL)
__cn30xxasx_softc = sc;
#endif
}
#define _ASX_RD8(sc, off) \
bus_space_read_8((sc)->sc_regt, (sc)->sc_regh, (off))
#define _ASX_WR8(sc, off, v) \
bus_space_write_8((sc)->sc_regt, (sc)->sc_regh, (off), (v))
static int cn30xxasx_enable_tx(struct cn30xxasx_softc *, int);
static int cn30xxasx_enable_rx(struct cn30xxasx_softc *, int);
#ifdef OCTEON_ETH_DEBUG
static int cn30xxasx_enable_intr(struct cn30xxasx_softc *, int);
#endif
int
cn30xxasx_enable(struct cn30xxasx_softc *sc, int enable)
{
#ifdef OCTEON_ETH_DEBUG
cn30xxasx_enable_intr(sc, enable);
#endif
cn30xxasx_enable_tx(sc, enable);
cn30xxasx_enable_rx(sc, enable);
return 0;
}
static int
cn30xxasx_enable_tx(struct cn30xxasx_softc *sc, int enable)
{
uint64_t asx_tx_port;
asx_tx_port = _ASX_RD8(sc, ASX0_TX_PRT_EN_OFFSET);
if (enable)
SET(asx_tx_port, 1 << sc->sc_port);
else
CLR(asx_tx_port, 1 << sc->sc_port);
_ASX_WR8(sc, ASX0_TX_PRT_EN_OFFSET, asx_tx_port);
return 0;
}
static int
cn30xxasx_enable_rx(struct cn30xxasx_softc *sc, int enable)
{
uint64_t asx_rx_port;
asx_rx_port = _ASX_RD8(sc, ASX0_RX_PRT_EN_OFFSET);
if (enable)
SET(asx_rx_port, 1 << sc->sc_port);
else
CLR(asx_rx_port, 1 << sc->sc_port);
_ASX_WR8(sc, ASX0_RX_PRT_EN_OFFSET, asx_rx_port);
return 0;
}
#if defined(OCTEON_ETH_DEBUG)
int cn30xxasx_intr_rml_verbose;
static const struct octeon_evcnt_entry cn30xxasx_intr_evcnt_entries[] = {
#define _ENTRY(name, type, parent, descr) \
OCTEON_EVCNT_ENTRY(struct cn30xxasx_softc, name, type, parent, descr)
_ENTRY(asxrxpsh, MISC, NULL, "asx tx fifo overflow"),
_ENTRY(asxtxpop, MISC, NULL, "asx tx fifo underflow"),
_ENTRY(asxovrflw, MISC, NULL, "asx rx fifo overflow"),
#undef _ENTRY
};
void
cn30xxasx_intr_evcnt_attach(struct cn30xxasx_softc *sc)
{
OCTEON_EVCNT_ATTACH_EVCNTS(sc, cn30xxasx_intr_evcnt_entries, "asx0");
}
void
cn30xxasx_intr_rml(void *arg)
{
struct cn30xxasx_softc *sc = __cn30xxasx_softc;
uint64_t reg = 0;
reg = cn30xxasx_int_summary(sc);
if (cn30xxasx_intr_rml_verbose)
printf("%s: ASX_INT_REG=0x%016" PRIx64 "\n", __func__, reg);
if (reg & ASX0_INT_REG_TXPSH)
OCTEON_EVCNT_INC(sc, asxrxpsh);
if (reg & ASX0_INT_REG_TXPOP)
OCTEON_EVCNT_INC(sc, asxtxpop);
if (reg & ASX0_INT_REG_OVRFLW)
OCTEON_EVCNT_INC(sc, asxovrflw);
}
static int
cn30xxasx_enable_intr(struct cn30xxasx_softc *sc, int enable)
{
uint64_t asx_int_xxx = 0;
SET(asx_int_xxx,
ASX0_INT_REG_TXPSH |
ASX0_INT_REG_TXPOP |
ASX0_INT_REG_OVRFLW);
_ASX_WR8(sc, ASX0_INT_REG_OFFSET, asx_int_xxx);
_ASX_WR8(sc, ASX0_INT_EN_OFFSET, enable ? asx_int_xxx : 0);
return 0;
}
#endif
int
cn30xxasx_clk_set(struct cn30xxasx_softc *sc, int setting)
{
_ASX_WR8(sc, ASX0_TX_CLK_SET0_OFFSET + 8 * sc->sc_port, setting);
_ASX_WR8(sc, ASX0_RX_CLK_SET0_OFFSET + 8 * sc->sc_port, setting);
return 0;
}
#ifdef OCTEON_ETH_DEBUG
uint64_t
cn30xxasx_int_summary(struct cn30xxasx_softc *sc)
{
uint64_t summary;
summary = _ASX_RD8(sc, ASX0_INT_REG_OFFSET);
_ASX_WR8(sc, ASX0_INT_REG_OFFSET, summary);
return summary;
}
#define _ENTRY(x) { #x, x##_BITS, x##_OFFSET }
struct cn30xxasx_dump_reg_ {
const char *name;
const char *format;
size_t offset;
};
void cn30xxasx_dump(void);
static const struct cn30xxasx_dump_reg_ cn30xxasx_dump_regs_[] = {
_ENTRY(ASX0_RX_PRT_EN),
_ENTRY(ASX0_TX_PRT_EN),
_ENTRY(ASX0_INT_REG),
_ENTRY(ASX0_INT_EN),
_ENTRY(ASX0_RX_CLK_SET0),
_ENTRY(ASX0_RX_CLK_SET1),
_ENTRY(ASX0_RX_CLK_SET2),
_ENTRY(ASX0_PRT_LOOP),
_ENTRY(ASX0_TX_CLK_SET0),
_ENTRY(ASX0_TX_CLK_SET1),
_ENTRY(ASX0_TX_CLK_SET2),
_ENTRY(ASX0_COMP_BYP),
_ENTRY(ASX0_TX_HI_WATER000),
_ENTRY(ASX0_TX_HI_WATER001),
_ENTRY(ASX0_TX_HI_WATER002),
_ENTRY(ASX0_GMII_RX_CLK_SET),
_ENTRY(ASX0_GMII_RX_DAT_SET),
_ENTRY(ASX0_MII_RX_DAT_SET),
};
void
cn30xxasx_dump(void)
{
struct cn30xxasx_softc *sc = __cn30xxasx_softc;
const struct cn30xxasx_dump_reg_ *reg;
uint64_t tmp;
char buf[512];
int i;
for (i = 0; i < (int)nitems(cn30xxasx_dump_regs_); i++) {
reg = &cn30xxasx_dump_regs_[i];
tmp = _ASX_RD8(sc, reg->offset);
if (reg->format == NULL)
snprintf(buf, sizeof(buf), "%016" PRIx64, tmp);
else
bitmask_snprintf(tmp, reg->format, buf, sizeof(buf));
printf("\t%-24s: %s\n", reg->name, buf);
}
}
#endif
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