hw/arm/allwinner: add SD/MMC host controller

The Allwinner System on Chip families sun4i and above contain
an integrated storage controller for Secure Digital (SD) and
Multi Media Card (MMC) interfaces. This commit adds support
for the Allwinner SD/MMC storage controller with the following
emulated features:

 * DMA transfers
 * Direct FIFO I/O
 * Short/Long format command responses
 * Auto-Stop command (CMD12)
 * Insert & remove card detection

The following boards are extended with the SD host controller:

 * Cubieboard (hw/arm/cubieboard.c)
 * Orange Pi PC (hw/arm/orangepi.c)

Signed-off-by: Niek Linnenbank <nieklinnenbank@gmail.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20200311221854.30370-9-nieklinnenbank@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

hw/arm/Kconfig

@@ -306,6 +306,7 @@ config ALLWINNER_H3
     select UNIMP
     select USB_OHCI
     select USB_EHCI_SYSBUS
+    select SD
 
 config RASPI
     bool

hw/arm/allwinner-a10.c

@@ -27,6 +27,7 @@
 #include "hw/boards.h"
 #include "hw/usb/hcd-ohci.h"
 
+#define AW_A10_MMC0_BASE        0x01c0f000
 #define AW_A10_PIC_REG_BASE     0x01c20400
 #define AW_A10_PIT_REG_BASE     0x01c20c00
 #define AW_A10_UART0_REG_BASE   0x01c28000
@@ -64,6 +65,9 @@ static void aw_a10_init(Object *obj)
                                   sizeof(s->ohci[i]), TYPE_SYSBUS_OHCI);
         }
     }
+
+    sysbus_init_child_obj(obj, "mmc0", &s->mmc0, sizeof(s->mmc0),
+                          TYPE_AW_SDHOST_SUN4I);
 }
 
 static void aw_a10_realize(DeviceState *dev, Error **errp)
@@ -164,6 +168,13 @@ static void aw_a10_realize(DeviceState *dev, Error **errp)
                                qdev_get_gpio_in(dev, 64 + i));
         }
     }
+
+    /* SD/MMC */
+    qdev_init_nofail(DEVICE(&s->mmc0));
+    sysbus_mmio_map(SYS_BUS_DEVICE(&s->mmc0), 0, AW_A10_MMC0_BASE);
+    sysbus_connect_irq(SYS_BUS_DEVICE(&s->mmc0), 0, qdev_get_gpio_in(dev, 32));
+    object_property_add_alias(OBJECT(s), "sd-bus", OBJECT(&s->mmc0),
+                              "sd-bus", &error_abort);
 }
 
 static void aw_a10_class_init(ObjectClass *oc, void *data)

hw/arm/allwinner-h3.c

@@ -38,6 +38,7 @@ const hwaddr allwinner_h3_memmap[] = {
     [AW_H3_SRAM_A2]    = 0x00044000,
     [AW_H3_SRAM_C]     = 0x00010000,
     [AW_H3_SYSCTRL]    = 0x01c00000,
+    [AW_H3_MMC0]       = 0x01c0f000,
     [AW_H3_SID]        = 0x01c14000,
     [AW_H3_EHCI0]      = 0x01c1a000,
     [AW_H3_OHCI0]      = 0x01c1a400,
@@ -76,7 +77,6 @@ struct AwH3Unimplemented {
     { "lcd0",      0x01c0c000, 4 * KiB },
     { "lcd1",      0x01c0d000, 4 * KiB },
     { "ve",        0x01c0e000, 4 * KiB },
-    { "mmc0",      0x01c0f000, 4 * KiB },
     { "mmc1",      0x01c10000, 4 * KiB },
     { "mmc2",      0x01c11000, 4 * KiB },
     { "crypto",    0x01c15000, 4 * KiB },
@@ -153,6 +153,7 @@ enum {
     AW_H3_GIC_SPI_UART3     =  3,
     AW_H3_GIC_SPI_TIMER0    = 18,
     AW_H3_GIC_SPI_TIMER1    = 19,
+    AW_H3_GIC_SPI_MMC0      = 60,
     AW_H3_GIC_SPI_EHCI0     = 72,
     AW_H3_GIC_SPI_OHCI0     = 73,
     AW_H3_GIC_SPI_EHCI1     = 74,
@@ -203,6 +204,9 @@ static void allwinner_h3_init(Object *obj)
                           TYPE_AW_SID);
     object_property_add_alias(obj, "identifier", OBJECT(&s->sid),
                               "identifier", &error_abort);
+
+    sysbus_init_child_obj(obj, "mmc0", &s->mmc0, sizeof(s->mmc0),
+                          TYPE_AW_SDHOST_SUN5I);
 }
 
 static void allwinner_h3_realize(DeviceState *dev, Error **errp)
@@ -324,6 +328,15 @@ static void allwinner_h3_realize(DeviceState *dev, Error **errp)
     qdev_init_nofail(DEVICE(&s->sid));
     sysbus_mmio_map(SYS_BUS_DEVICE(&s->sid), 0, s->memmap[AW_H3_SID]);
 
+    /* SD/MMC */
+    qdev_init_nofail(DEVICE(&s->mmc0));
+    sysbus_mmio_map(SYS_BUS_DEVICE(&s->mmc0), 0, s->memmap[AW_H3_MMC0]);
+    sysbus_connect_irq(SYS_BUS_DEVICE(&s->mmc0), 0,
+                       qdev_get_gpio_in(DEVICE(&s->gic), AW_H3_GIC_SPI_MMC0));
+
+    object_property_add_alias(OBJECT(s), "sd-bus", OBJECT(&s->mmc0),
+                              "sd-bus", &error_abort);
+
     /* Universal Serial Bus */
     sysbus_create_simple(TYPE_AW_H3_EHCI, s->memmap[AW_H3_EHCI0],
                          qdev_get_gpio_in(DEVICE(&s->gic),

hw/arm/cubieboard.c

@@ -22,6 +22,7 @@
 #include "sysemu/sysemu.h"
 #include "hw/sysbus.h"
 #include "hw/boards.h"
+#include "hw/qdev-properties.h"
 #include "hw/arm/allwinner-a10.h"
 
 static struct arm_boot_info cubieboard_binfo = {
@@ -33,6 +34,10 @@ static void cubieboard_init(MachineState *machine)
 {
     AwA10State *a10;
     Error *err = NULL;
+    DriveInfo *di;
+    BlockBackend *blk;
+    BusState *bus;
+    DeviceState *carddev;
 
     /* BIOS is not supported by this board */
     if (bios_name) {
@@ -82,6 +87,16 @@ static void cubieboard_init(MachineState *machine)
         exit(1);
     }
 
+    /* Retrieve SD bus */
+    di = drive_get_next(IF_SD);
+    blk = di ? blk_by_legacy_dinfo(di) : NULL;
+    bus = qdev_get_child_bus(DEVICE(a10), "sd-bus");
+
+    /* Plug in SD card */
+    carddev = qdev_create(bus, TYPE_SD_CARD);
+    qdev_prop_set_drive(carddev, "drive", blk, &error_fatal);
+    object_property_set_bool(OBJECT(carddev), true, "realized", &error_fatal);
+
     memory_region_add_subregion(get_system_memory(), AW_A10_SDRAM_BASE,
                                 machine->ram);
 

hw/arm/orangepi.c

@@ -35,6 +35,10 @@ static struct arm_boot_info orangepi_binfo = {
 static void orangepi_init(MachineState *machine)
 {
     AwH3State *h3;
+    DriveInfo *di;
+    BlockBackend *blk;
+    BusState *bus;
+    DeviceState *carddev;
 
     /* BIOS is not supported by this board */
     if (bios_name) {
@@ -76,6 +80,16 @@ static void orangepi_init(MachineState *machine)
     /* Mark H3 object realized */
     object_property_set_bool(OBJECT(h3), true, "realized", &error_abort);
 
+    /* Retrieve SD bus */
+    di = drive_get_next(IF_SD);
+    blk = di ? blk_by_legacy_dinfo(di) : NULL;
+    bus = qdev_get_child_bus(DEVICE(h3), "sd-bus");
+
+    /* Plug in SD card */
+    carddev = qdev_create(bus, TYPE_SD_CARD);
+    qdev_prop_set_drive(carddev, "drive", blk, &error_fatal);
+    object_property_set_bool(OBJECT(carddev), true, "realized", &error_fatal);
+
     /* SDRAM */
     memory_region_add_subregion(get_system_memory(), h3->memmap[AW_H3_SDRAM],
                                 machine->ram);
@@ -89,6 +103,8 @@ static void orangepi_machine_init(MachineClass *mc)
 {
     mc->desc = "Orange Pi PC";
     mc->init = orangepi_init;
+    mc->block_default_type = IF_SD;
+    mc->units_per_default_bus = 1;
     mc->min_cpus = AW_H3_NUM_CPUS;
     mc->max_cpus = AW_H3_NUM_CPUS;
     mc->default_cpus = AW_H3_NUM_CPUS;

hw/sd/Makefile.objs

@@ -4,6 +4,7 @@ common-obj-$(CONFIG_SD) += sd.o core.o sdmmc-internal.o
 common-obj-$(CONFIG_SDHCI) += sdhci.o
 common-obj-$(CONFIG_SDHCI_PCI) += sdhci-pci.o
 
+common-obj-$(CONFIG_ALLWINNER_H3) += allwinner-sdhost.o
 common-obj-$(CONFIG_MILKYMIST) += milkymist-memcard.o
 common-obj-$(CONFIG_OMAP) += omap_mmc.o
 common-obj-$(CONFIG_PXA2XX) += pxa2xx_mmci.o