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/* $OpenBSD: if_em_soc.c,v 1.2 2011/04/07 15:30:16 miod Exp $ */
/*
* Copyright (c) 2009 Dariusz Swiderski <sfires@sfires.net>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <dev/pci/if_em.h>
#include <dev/pci/if_em_hw.h>
#include <dev/pci/if_em_soc.h>
#include <dev/pci/gcu.h>
#include <dev/pci/gcu_reg.h>
void em_media_status(struct ifnet *, struct ifmediareq *);
int em_media_change(struct ifnet *);
void *
em_lookup_gcu(struct device *self)
{
struct device *dev;
INIT_DEBUGOUT("em_lookup_gcu");
TAILQ_FOREACH(dev, &alldevs, dv_list) {
if (strcmp(dev->dv_xname, "gcu0") == 0) {
return dev;
}
}
return 0;
}
int
em_attach_miibus(struct device *self)
{
return 0;
}
int
gcu_miibus_readreg(struct em_hw *hw, int phy, int reg)
{
struct em_softc *sc = (struct em_softc *)
((struct em_osdep *)hw->back)->dev;
struct gcu_softc *gcu = hw->gcu;
uint32_t data = 0;
uint32_t done = 0;
int i = 0;
if (gcu == 0)
return 0;
/* format the data to be written to MDIO_COMMAND_REG */
data |= (reg << MDIO_COMMAND_PHY_REG_OFFSET);
data |= (phy << MDIO_COMMAND_PHY_ADDR_OFFSET);
data |= MDIO_COMMAND_GO_MASK;
mtx_enter(&gcu->mdio_mtx);
bus_space_write_4(gcu->tag, gcu->handle, MDIO_COMMAND_REG, data);
while (!done && (i++ < GCU_MAX_ATTEMPTS)) {
DELAY(GCU_CMD_DELAY);
data = bus_space_read_4(gcu->tag, gcu->handle,
MDIO_COMMAND_REG);
done = !((data & MDIO_COMMAND_GO_MASK) >>
MDIO_COMMAND_GO_OFFSET);
}
mtx_leave(&gcu->mdio_mtx);
if (i >= GCU_MAX_ATTEMPTS) {
printf("%s: phy read timeout: phy %d, reg %d\n",
sc->sc_dv.dv_xname, phy, reg);
return (0);
}
mtx_enter(&gcu->mdio_mtx);
data = bus_space_read_4(gcu->tag, gcu->handle, MDIO_STATUS_REG);
mtx_leave(&gcu->mdio_mtx);
if((data & MDIO_STATUS_STATUS_MASK) != 0) {
printf("%s: unable to read phy %d reg %d\n",
sc->sc_dv.dv_xname, phy, reg);
return (0);
}
return (uint16_t) (data & MDIO_STATUS_READ_DATA_MASK);
}
void
gcu_miibus_writereg(struct em_hw *hw, int phy, int reg, int val)
{
struct em_softc *sc = (struct em_softc *)
((struct em_osdep *)hw->back)->dev;
struct gcu_softc *gcu = hw->gcu;
uint32_t data, done = 0;
int i = 0;
if (gcu == 0)
return;
/* format the data to be written to the MDIO_COMMAND_REG */
data = val;
data |= (reg << MDIO_COMMAND_PHY_REG_OFFSET);
data |= (phy << MDIO_COMMAND_PHY_ADDR_OFFSET);
data |= MDIO_COMMAND_OPER_MASK | MDIO_COMMAND_GO_MASK;
mtx_enter(&gcu->mdio_mtx);
bus_space_write_4(gcu->tag, gcu->handle, MDIO_COMMAND_REG, data);
while (!done && (i++ < GCU_MAX_ATTEMPTS)) {
DELAY(GCU_CMD_DELAY);
data = bus_space_read_4(gcu->tag, gcu->handle,
MDIO_COMMAND_REG);
done = !((data & MDIO_COMMAND_GO_MASK) >>
MDIO_COMMAND_GO_OFFSET);
}
mtx_leave(&gcu->mdio_mtx);
if (i >= GCU_MAX_ATTEMPTS) {
printf("%s: phy read timeout: phy %d, reg %d\n",
sc->sc_dv.dv_xname, phy, reg);
return;
}
}
void
gcu_miibus_statchg(struct device *dev)
{
}
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