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/* $OpenBSD: wdc_mainbus.c,v 1.1 2009/09/06 20:09:34 kettenis Exp $ */
/*
* Copyright (c) 2009 Mark Kettenis
*
* 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.
*/
/*
* Driver for Compact Flash interface on the local bus of a PowerQUICC
* MPC8343E processor as found on the RouterBOARD 600.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <machine/autoconf.h>
#include <dev/ofw/openfirm.h>
#include <dev/ata/atavar.h>
#include <dev/ic/wdcvar.h>
struct wdc_mainbus_softc {
struct wdc_softc sc_wdcdev;
struct channel_softc *sc_chanptr;
struct channel_softc sc_channel;
void *sc_ih;
};
int wdc_mainbus_match(struct device *, void *, void *);
void wdc_mainbus_attach(struct device *, struct device *, void *);
struct cfattach wdc_mainbus_ca = {
sizeof(struct wdc_mainbus_softc), wdc_mainbus_match, wdc_mainbus_attach
};
/*
* The CF slots on the RouterBOARD 600 are wired up in a completely
* retarded way. Instead of using the obvious address lines it uses
* LAD[11:15], which means we need to waste more than 0.5 MB of
* address space to map 10 8-bit registers.
*/
#define WDC_MAINBUS_REG_NPORTS WDC_NREG
#define WDC_MAINBUS_REG_SIZE (WDC_MAINBUS_REG_NPORTS << 16)
#define WDC_MAINBUS_REG_OFFSET (8 << 17)
#define WDC_MAINBUS_AUXREG_NPORTS 2
#define WDC_MAINBUS_AUXREG_SIZE (WDC_MAINBUS_AUXREG_NPORTS << 16)
#define WDC_MAINBUS_AUXREG_OFFSET (6 << 16)
u_int8_t wdc_mainbus_read_reg(struct channel_softc *chp, enum wdc_regs reg);
void wdc_mainbus_write_reg(struct channel_softc *chp, enum wdc_regs reg,
u_int8_t val);
struct channel_softc_vtbl wdc_mainbus_vtbl = {
wdc_mainbus_read_reg,
wdc_mainbus_write_reg,
wdc_default_lba48_write_reg,
wdc_default_read_raw_multi_2,
wdc_default_write_raw_multi_2,
wdc_default_read_raw_multi_4,
wdc_default_write_raw_multi_4
};
int
wdc_mainbus_match(struct device *parent, void *cfdata, void *aux)
{
struct mainbus_attach_args *ma = aux;
char buf[32];
if (OF_getprop(ma->ma_node, "device_type", buf, sizeof(buf)) <= 0 ||
strcmp(buf, "rb,cf") != 0)
return (0);
return (1);
}
void
wdc_mainbus_attach(struct device *parent, struct device *self, void *aux)
{
struct wdc_mainbus_softc *sc = (void *)self;
struct mainbus_attach_args *ma = aux;
struct channel_softc *chp = &sc->sc_channel;
int reg[2];
int ivec;
if (OF_getprop(ma->ma_node, "reg", ®, sizeof(reg)) < sizeof(reg)) {
printf(": missing registers\n");
return;
}
if (OF_getprop(ma->ma_node, "interrupts", &ivec, sizeof(ivec)) <= 0) {
printf(": missing interrupts\n");
return;
}
chp->cmd_iot = chp->ctl_iot = ma->ma_iot;
chp->_vtbl = &wdc_mainbus_vtbl;
if (bus_space_map(chp->cmd_iot, reg[0] + WDC_MAINBUS_REG_OFFSET,
WDC_MAINBUS_REG_SIZE, 0, &chp->cmd_ioh)) {
printf(": can't map registers\n");
return;
}
if (bus_space_map(chp->ctl_iot, reg[0] + WDC_MAINBUS_AUXREG_OFFSET,
WDC_MAINBUS_AUXREG_SIZE, 0, &chp->ctl_ioh)) {
printf(": can't map registers\n");
return;
}
sc->sc_ih = intr_establish(ivec, IST_LEVEL, IPL_BIO, wdcintr,
chp, self->dv_xname);
sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_PREATA;
sc->sc_wdcdev.PIO_cap = 0;
sc->sc_chanptr = chp;
sc->sc_wdcdev.channels = &sc->sc_chanptr;
sc->sc_wdcdev.nchannels = 1;
chp->channel = 0;
chp->wdc = &sc->sc_wdcdev;
chp->ch_queue = malloc(sizeof(struct channel_queue), M_DEVBUF,
M_NOWAIT);
if (chp->ch_queue == NULL) {
printf("%s: can't allocate memory for command queue\n",
self->dv_xname);
/* XXX disestablish interrupt */
return;
}
printf("\n");
wdcattach(chp);
wdc_print_current_modes(chp);
}
u_int8_t
wdc_mainbus_read_reg(struct channel_softc *chp, enum wdc_regs reg)
{
uint8_t val;
if (reg & _WDC_AUX) {
val = bus_space_read_1(chp->ctl_iot, chp->ctl_ioh,
(reg & _WDC_REGMASK) << 16);
if (val == 0xf9 && reg == wdr_altsts)
val = 0x7f;
} else {
val = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh,
(reg & _WDC_REGMASK) << 16);
if (val == 0xf9 && reg == wdr_status)
val = 0x7f;
}
return val;
}
void
wdc_mainbus_write_reg(struct channel_softc *chp, enum wdc_regs reg,
u_int8_t val)
{
if (reg & _WDC_AUX)
bus_space_write_1(chp->ctl_iot, chp->ctl_ioh,
(reg & _WDC_REGMASK) << 16, val);
else
bus_space_write_1(chp->cmd_iot, chp->cmd_ioh,
(reg & _WDC_REGMASK) << 16, val);
}
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