147 lines
3.1 KiB
C
147 lines
3.1 KiB
C
/*
|
|
* SD card bus interface code.
|
|
*
|
|
* Copyright (c) 2015 Linaro Limited
|
|
*
|
|
* Author:
|
|
* Peter Maydell <peter.maydell@linaro.org>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2 or later, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along with
|
|
* this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "hw/qdev-core.h"
|
|
#include "sysemu/block-backend.h"
|
|
#include "hw/sd/sd.h"
|
|
|
|
static SDState *get_card(SDBus *sdbus)
|
|
{
|
|
/* We only ever have one child on the bus so just return it */
|
|
BusChild *kid = QTAILQ_FIRST(&sdbus->qbus.children);
|
|
|
|
if (!kid) {
|
|
return NULL;
|
|
}
|
|
return SD_CARD(kid->child);
|
|
}
|
|
|
|
int sdbus_do_command(SDBus *sdbus, SDRequest *req, uint8_t *response)
|
|
{
|
|
SDState *card = get_card(sdbus);
|
|
|
|
if (card) {
|
|
SDCardClass *sc = SD_CARD_GET_CLASS(card);
|
|
|
|
return sc->do_command(card, req, response);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void sdbus_write_data(SDBus *sdbus, uint8_t value)
|
|
{
|
|
SDState *card = get_card(sdbus);
|
|
|
|
if (card) {
|
|
SDCardClass *sc = SD_CARD_GET_CLASS(card);
|
|
|
|
sc->write_data(card, value);
|
|
}
|
|
}
|
|
|
|
uint8_t sdbus_read_data(SDBus *sdbus)
|
|
{
|
|
SDState *card = get_card(sdbus);
|
|
|
|
if (card) {
|
|
SDCardClass *sc = SD_CARD_GET_CLASS(card);
|
|
|
|
return sc->read_data(card);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
bool sdbus_data_ready(SDBus *sdbus)
|
|
{
|
|
SDState *card = get_card(sdbus);
|
|
|
|
if (card) {
|
|
SDCardClass *sc = SD_CARD_GET_CLASS(card);
|
|
|
|
return sc->data_ready(card);
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool sdbus_get_inserted(SDBus *sdbus)
|
|
{
|
|
SDState *card = get_card(sdbus);
|
|
|
|
if (card) {
|
|
SDCardClass *sc = SD_CARD_GET_CLASS(card);
|
|
|
|
return sc->get_inserted(card);
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool sdbus_get_readonly(SDBus *sdbus)
|
|
{
|
|
SDState *card = get_card(sdbus);
|
|
|
|
if (card) {
|
|
SDCardClass *sc = SD_CARD_GET_CLASS(card);
|
|
|
|
return sc->get_readonly(card);
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void sdbus_set_inserted(SDBus *sdbus, bool inserted)
|
|
{
|
|
SDBusClass *sbc = SD_BUS_GET_CLASS(sdbus);
|
|
BusState *qbus = BUS(sdbus);
|
|
|
|
if (sbc->set_inserted) {
|
|
sbc->set_inserted(qbus->parent, inserted);
|
|
}
|
|
}
|
|
|
|
void sdbus_set_readonly(SDBus *sdbus, bool readonly)
|
|
{
|
|
SDBusClass *sbc = SD_BUS_GET_CLASS(sdbus);
|
|
BusState *qbus = BUS(sdbus);
|
|
|
|
if (sbc->set_readonly) {
|
|
sbc->set_readonly(qbus->parent, readonly);
|
|
}
|
|
}
|
|
|
|
static const TypeInfo sd_bus_info = {
|
|
.name = TYPE_SD_BUS,
|
|
.parent = TYPE_BUS,
|
|
.instance_size = sizeof(SDBus),
|
|
.class_size = sizeof(SDBusClass),
|
|
};
|
|
|
|
static void sd_bus_register_types(void)
|
|
{
|
|
type_register_static(&sd_bus_info);
|
|
}
|
|
|
|
type_init(sd_bus_register_types)
|