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>
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@ -34,6 +34,7 @@
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#include "elf.h"
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#include "milkymist-hw.h"
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#include "hw/display/milkymist_tmu2.h"
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#include "hw/sd/sd.h"
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#include "lm32.h"
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#include "exec/address-spaces.h"
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#include "qemu/cutils.h"
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@ -83,11 +84,23 @@ static void main_cpu_reset(void *opaque)
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static DeviceState *milkymist_memcard_create(hwaddr base)
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{
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DeviceState *dev;
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DriveInfo *dinfo;
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dev = qdev_new("milkymist-memcard");
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sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
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sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, base);
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dinfo = drive_get_next(IF_SD);
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if (dinfo) {
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DeviceState *card;
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card = qdev_new(TYPE_SD_CARD);
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qdev_prop_set_drive_err(card, "drive", blk_by_legacy_dinfo(dinfo),
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&error_fatal);
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qdev_realize_and_unref(card, qdev_get_child_bus(dev, "sd-bus"),
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&error_fatal);
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}
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return dev;
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}
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@ -66,6 +66,8 @@ enum {
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#define MILKYMIST_MEMCARD(obj) \
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OBJECT_CHECK(MilkymistMemcardState, (obj), TYPE_MILKYMIST_MEMCARD)
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#define TYPE_MILKYMIST_SDBUS "milkymist-sdbus"
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struct MilkymistMemcardState {
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SysBusDevice parent_obj;
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@ -253,6 +255,19 @@ static void milkymist_memcard_reset(DeviceState *d)
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}
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}
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static void milkymist_memcard_set_readonly(DeviceState *dev, bool level)
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{
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qemu_log_mask(LOG_UNIMP,
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"milkymist_memcard: read-only mode not supported\n");
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}
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static void milkymist_memcard_set_inserted(DeviceState *dev, bool level)
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{
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MilkymistMemcardState *s = MILKYMIST_MEMCARD(dev);
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s->enabled = !!level;
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}
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static void milkymist_memcard_init(Object *obj)
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{
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MilkymistMemcardState *s = MILKYMIST_MEMCARD(obj);
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@ -266,27 +281,6 @@ static void milkymist_memcard_init(Object *obj)
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DEVICE(obj), "sd-bus");
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}
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static void milkymist_memcard_realize(DeviceState *dev, Error **errp)
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{
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MilkymistMemcardState *s = MILKYMIST_MEMCARD(dev);
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DeviceState *carddev;
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BlockBackend *blk;
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DriveInfo *dinfo;
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Error *err = NULL;
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/* Create and plug in the sd card */
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/* FIXME use a qdev drive property instead of drive_get_next() */
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dinfo = drive_get_next(IF_SD);
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blk = dinfo ? blk_by_legacy_dinfo(dinfo) : NULL;
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carddev = qdev_new(TYPE_SD_CARD);
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qdev_prop_set_drive(carddev, "drive", blk);
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if (!qdev_realize_and_unref(carddev, BUS(&s->sdbus), &err)) {
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error_propagate_prepend(errp, err, "failed to init SD card");
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return;
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}
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s->enabled = blk && blk_is_inserted(blk);
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}
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static const VMStateDescription vmstate_milkymist_memcard = {
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.name = "milkymist-memcard",
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.version_id = 1,
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@ -308,10 +302,9 @@ static void milkymist_memcard_class_init(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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dc->realize = milkymist_memcard_realize;
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dc->reset = milkymist_memcard_reset;
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dc->vmsd = &vmstate_milkymist_memcard;
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/* Reason: init() method uses drive_get_next() */
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/* Reason: output IRQs should be wired up */
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dc->user_creatable = false;
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}
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@ -323,9 +316,25 @@ static const TypeInfo milkymist_memcard_info = {
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.class_init = milkymist_memcard_class_init,
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};
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static void milkymist_sdbus_class_init(ObjectClass *klass, void *data)
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{
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SDBusClass *sbc = SD_BUS_CLASS(klass);
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sbc->set_inserted = milkymist_memcard_set_inserted;
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sbc->set_readonly = milkymist_memcard_set_readonly;
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}
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static const TypeInfo milkymist_sdbus_info = {
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.name = TYPE_MILKYMIST_SDBUS,
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.parent = TYPE_SD_BUS,
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.instance_size = sizeof(SDBus),
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.class_init = milkymist_sdbus_class_init,
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};
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static void milkymist_memcard_register_types(void)
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{
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type_register_static(&milkymist_memcard_info);
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type_register_static(&milkymist_sdbus_info);
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}
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type_init(milkymist_memcard_register_types)
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