[PATCH v3 02/21] sd: emmc: Add support for eMMC cards

[Sai Pavan Boddu <sai.pavan.boddu@xilinx.com>]

Add eMMC device built on top of SD card.

Signed-off-by: Sai Pavan Boddu <sai.pavan.boddu@xilinx.com>
---
 include/hw/sd/sd.h |  2 ++
 hw/sd/sd.c         | 20 ++++++++++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/include/hw/sd/sd.h b/include/hw/sd/sd.h
index 05ef9b7..b402dad 100644
--- a/include/hw/sd/sd.h
+++ b/include/hw/sd/sd.h
@@ -90,6 +90,8 @@ typedef struct {
 } SDRequest;
 
 
+#define TYPE_EMMC "emmc"
+OBJECT_DECLARE_SIMPLE_TYPE(EMMCState, EMMC)
 #define TYPE_SD_CARD "sd-card"
 OBJECT_DECLARE_TYPE(SDState, SDCardClass, SD_CARD)
 
diff --git a/hw/sd/sd.c b/hw/sd/sd.c
index 74b9162..a23af6d 100644
--- a/hw/sd/sd.c
+++ b/hw/sd/sd.c
@@ -108,6 +108,7 @@ struct SDState {
     uint8_t spec_version;
     BlockBackend *blk;
     bool spi;
+    bool emmc;
 
     /* Runtime changeables */
 
@@ -143,6 +144,10 @@ struct SDState {
     bool cmd_line;
 };
 
+struct EMMCState {
+    SDState parent;
+};
+
 static void sd_realize(DeviceState *dev, Error **errp);
 
 static const char *sd_state_name(enum SDCardStates state)
@@ -2105,6 +2110,13 @@ static void sd_instance_init(Object *obj)
     sd->ocr_power_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, sd_ocr_powerup, sd);
 }
 
+static void emmc_instance_init(Object *obj)
+{
+    SDState *sd = SD_CARD(obj);
+
+    sd->emmc = true;
+}
+
 static void sd_instance_finalize(Object *obj)
 {
     SDState *sd = SD_CARD(obj);
@@ -2213,9 +2225,17 @@ static const TypeInfo sd_info = {
     .instance_finalize = sd_instance_finalize,
 };
 
+static const TypeInfo emmc_info = {
+    .name = TYPE_EMMC,
+    .parent = TYPE_SD_CARD,
+    .instance_size = sizeof(EMMCState),
+    .instance_init = emmc_instance_init,
+};
+
 static void sd_register_types(void)
 {
     type_register_static(&sd_info);
+    type_register_static(&emmc_info);
 }
 
 type_init(sd_register_types)
-- 
2.7.4