hw/arm: Add AHCI/SATA controller to Allwinner R40 and Bananapi board

Allwinner R40 supports an AHCI compliant SATA controller.
Add support for it.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Message-id: 20240115182757.1095012-3-linux@roeck-us.net
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

docs/system/arm/bananapi_m2u.rst

@@ -22,6 +22,7 @@ The Banana Pi M2U machine supports the following devices:
  * EMAC ethernet
  * GMAC ethernet
  * Clock Control Unit
+ * SATA
  * TWI (I2C)
  * USB 2.0
 

hw/arm/Kconfig

@@ -408,6 +408,7 @@ config ALLWINNER_H3
 config ALLWINNER_R40
     bool
     default y if TCG && ARM
+    select AHCI
     select ALLWINNER_SRAMC
     select ALLWINNER_A10_PIT
     select AXP2XX_PMU

hw/arm/allwinner-r40.c

@@ -46,6 +46,7 @@ const hwaddr allwinner_r40_memmap[] = {
     [AW_R40_DEV_MMC1]       = 0x01c10000,
     [AW_R40_DEV_MMC2]       = 0x01c11000,
     [AW_R40_DEV_MMC3]       = 0x01c12000,
+    [AW_R40_DEV_AHCI]       = 0x01c18000,
     [AW_R40_DEV_EHCI1]      = 0x01c19000,
     [AW_R40_DEV_OHCI1]      = 0x01c19400,
     [AW_R40_DEV_EHCI2]      = 0x01c1c000,
@@ -93,7 +94,6 @@ static struct AwR40Unimplemented r40_unimplemented[] = {
     { "usb0-host",  0x01c14000, 4 * KiB },
     { "crypto",     0x01c15000, 4 * KiB },
     { "spi2",       0x01c17000, 4 * KiB },
-    { "sata",       0x01c18000, 4 * KiB },
     { "usb1-phy",   0x01c19800, 2 * KiB },
     { "sid",        0x01c1b000, 4 * KiB },
     { "usb2-phy",   0x01c1c800, 2 * KiB },
@@ -186,6 +186,7 @@ enum {
     AW_R40_GIC_SPI_MMC2      = 34,
     AW_R40_GIC_SPI_MMC3      = 35,
     AW_R40_GIC_SPI_EMAC      = 55,
+    AW_R40_GIC_SPI_AHCI      = 56,
     AW_R40_GIC_SPI_OHCI1     = 64,
     AW_R40_GIC_SPI_OHCI2     = 65,
     AW_R40_GIC_SPI_EHCI1     = 76,
@@ -285,6 +286,8 @@ static void allwinner_r40_init(Object *obj)
                                 TYPE_AW_SDHOST_SUN50I_A64);
     }
 
+    object_initialize_child(obj, "sata", &s->sata, TYPE_ALLWINNER_AHCI);
+
     for (size_t i = 0; i < AW_R40_NUM_USB; i++) {
         object_initialize_child(obj, "ehci[*]", &s->ehci[i],
                                 TYPE_PLATFORM_EHCI);
@@ -423,6 +426,13 @@ static void allwinner_r40_realize(DeviceState *dev, Error **errp)
     sysbus_realize(SYS_BUS_DEVICE(&s->ccu), &error_fatal);
     sysbus_mmio_map(SYS_BUS_DEVICE(&s->ccu), 0, s->memmap[AW_R40_DEV_CCU]);
 
+    /* SATA / AHCI */
+    sysbus_realize(SYS_BUS_DEVICE(&s->sata), &error_fatal);
+    sysbus_mmio_map(SYS_BUS_DEVICE(&s->sata), 0,
+                    allwinner_r40_memmap[AW_R40_DEV_AHCI]);
+    sysbus_connect_irq(SYS_BUS_DEVICE(&s->sata), 0,
+                       qdev_get_gpio_in(DEVICE(&s->gic), AW_R40_GIC_SPI_AHCI));
+
     /* USB */
     for (size_t i = 0; i < AW_R40_NUM_USB; i++) {
         g_autofree char *bus = g_strdup_printf("usb-bus.%zu", i);

include/hw/arm/allwinner-r40.h

@@ -22,6 +22,7 @@
 
 #include "qom/object.h"
 #include "hw/timer/allwinner-a10-pit.h"
+#include "hw/ide/ahci.h"
 #include "hw/intc/arm_gic.h"
 #include "hw/sd/allwinner-sdhost.h"
 #include "hw/misc/allwinner-r40-ccu.h"
@@ -46,6 +47,7 @@ enum {
     AW_R40_DEV_MMC1,
     AW_R40_DEV_MMC2,
     AW_R40_DEV_MMC3,
+    AW_R40_DEV_AHCI,
     AW_R40_DEV_EHCI1,
     AW_R40_DEV_OHCI1,
     AW_R40_DEV_EHCI2,
@@ -112,6 +114,7 @@ struct AwR40State {
     const hwaddr *memmap;
     AwSRAMCState sramc;
     AwA10PITState timer;
+    AllwinnerAHCIState sata;
     AwSdHostState mmc[AW_R40_NUM_MMCS];
     EHCISysBusState ehci[AW_R40_NUM_USB];
     OHCISysBusState ohci[AW_R40_NUM_USB];