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hw/sd/milkymist: Do not create SD card within the SD host controller 

SD/MMC host controllers provide a SD Bus to plug SD cards,
but don't come with SD card plugged in :) Let the machine/board
model create and plug the SD cards when required.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20200705211016.15241-5-f4bug@amsat.org>
This commit is contained in:
Philippe Mathieu-Daudé 2020-07-05 23:03:34 +02:00
parent ae7ba8e04a
commit a8c73ca21a
2 changed files with 45 additions and 23 deletions
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13
hw/lm32/milkymist.c
View File

@ -34,6 +34,7 @@
#include "elf.h"
#include "milkymist-hw.h"
#include "hw/display/milkymist_tmu2.h"
#include "hw/sd/sd.h"
#include "lm32.h"
#include "exec/address-spaces.h"
#include "qemu/cutils.h"
@ -83,11 +84,23 @@ static void main_cpu_reset(void *opaque)
static DeviceState *milkymist_memcard_create(hwaddr base)
{
DeviceState *dev;
DriveInfo *dinfo;
dev = qdev_new("milkymist-memcard");
sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, base);
dinfo = drive_get_next(IF_SD);
if (dinfo) {
DeviceState *card;
card = qdev_new(TYPE_SD_CARD);
qdev_prop_set_drive_err(card, "drive", blk_by_legacy_dinfo(dinfo),
&error_fatal);
qdev_realize_and_unref(card, qdev_get_child_bus(dev, "sd-bus"),
&error_fatal);
}
return dev;
}

55
hw/sd/milkymist-memcard.c
View File

@ -66,6 +66,8 @@ enum {
#define MILKYMIST_MEMCARD(obj) \
OBJECT_CHECK(MilkymistMemcardState, (obj), TYPE_MILKYMIST_MEMCARD)
#define TYPE_MILKYMIST_SDBUS "milkymist-sdbus"
struct MilkymistMemcardState {
SysBusDevice parent_obj;
@ -253,6 +255,19 @@ static void milkymist_memcard_reset(DeviceState *d)
}
}
static void milkymist_memcard_set_readonly(DeviceState *dev, bool level)
{
qemu_log_mask(LOG_UNIMP,
"milkymist_memcard: read-only mode not supported\n");
}
static void milkymist_memcard_set_inserted(DeviceState *dev, bool level)
{
MilkymistMemcardState *s = MILKYMIST_MEMCARD(dev);
s->enabled = !!level;
}
static void milkymist_memcard_init(Object *obj)
{
MilkymistMemcardState *s = MILKYMIST_MEMCARD(obj);
@ -266,27 +281,6 @@ static void milkymist_memcard_init(Object *obj)
DEVICE(obj), "sd-bus");
}
static void milkymist_memcard_realize(DeviceState *dev, Error **errp)
{
MilkymistMemcardState *s = MILKYMIST_MEMCARD(dev);
DeviceState *carddev;
BlockBackend *blk;
DriveInfo *dinfo;
Error *err = NULL;
/* Create and plug in the sd card */
/* FIXME use a qdev drive property instead of drive_get_next() */
dinfo = drive_get_next(IF_SD);
blk = dinfo ? blk_by_legacy_dinfo(dinfo) : NULL;
carddev = qdev_new(TYPE_SD_CARD);
qdev_prop_set_drive(carddev, "drive", blk);
if (!qdev_realize_and_unref(carddev, BUS(&s->sdbus), &err)) {
error_propagate_prepend(errp, err, "failed to init SD card");
return;
}
s->enabled = blk && blk_is_inserted(blk);
}
static const VMStateDescription vmstate_milkymist_memcard = {
.name = "milkymist-memcard",
.version_id = 1,
@ -308,10 +302,9 @@ static void milkymist_memcard_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->realize = milkymist_memcard_realize;
dc->reset = milkymist_memcard_reset;
dc->vmsd = &vmstate_milkymist_memcard;
/* Reason: init() method uses drive_get_next() */
/* Reason: output IRQs should be wired up */
dc->user_creatable = false;
}
@ -323,9 +316,25 @@ static const TypeInfo milkymist_memcard_info = {
.class_init = milkymist_memcard_class_init,
};
static void milkymist_sdbus_class_init(ObjectClass *klass, void *data)
{
SDBusClass *sbc = SD_BUS_CLASS(klass);
sbc->set_inserted = milkymist_memcard_set_inserted;
sbc->set_readonly = milkymist_memcard_set_readonly;
}
static const TypeInfo milkymist_sdbus_info = {
.name = TYPE_MILKYMIST_SDBUS,
.parent = TYPE_SD_BUS,
.instance_size = sizeof(SDBus),
.class_init = milkymist_sdbus_class_init,
};
static void milkymist_memcard_register_types(void)
{
type_register_static(&milkymist_memcard_info);
type_register_static(&milkymist_sdbus_info);
}
type_init(milkymist_memcard_register_types)