hw/arm/npcm7xx: Add EHCI and OHCI controllers

The NPCM730 and NPCM750 chips have a single USB host port shared between
a USB 2.0 EHCI host controller and a USB 1.1 OHCI host controller. This
adds support for both of them.

Testing notes:
  * With -device usb-kbd, qemu will automatically insert a full-speed
    hub, and the keyboard becomes controlled by the OHCI controller.
  * With -device usb-kbd,bus=usb-bus.0,port=1, the keyboard is directly
    attached to the port without any hubs, and the device becomes
    controlled by the EHCI controller since it's high speed capable.
  * With -device usb-kbd,bus=usb-bus.0,port=1,usb_version=1, the
    keyboard is directly attached to the port, but it only advertises
    itself as full-speed capable, so it becomes controlled by the OHCI
    controller.

In all cases, the keyboard device enumerates correctly.

Reviewed-by: Tyrone Ting <kfting@nuvoton.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Havard Skinnemoen <hskinnemoen@google.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 25 insertions, 2 deletions

diff --git a/hw/arm/npcm7xx.c b/hw/arm/npcm7xx.c
index cb4db41..c1d1225 100644
--- a/hw/arm/npcm7xx.c
+++ b/hw/arm/npcm7xx.c
@@ -46,6 +46,10 @@
 #define NPCM7XX_MC_BA           (0xf0824000)
 #define NPCM7XX_RNG_BA          (0xf000b000)
 
+/* USB Host modules */
+#define NPCM7XX_EHCI_BA         (0xf0806000)
+#define NPCM7XX_OHCI_BA         (0xf0807000)
+
 /* Internal AHB SRAM */
 #define NPCM7XX_RAM3_BA         (0xc0008000)
 #define NPCM7XX_RAM3_SZ         (4 * KiB)
@@ -90,6 +94,8 @@ enum NPCM7xxInterrupt {
     NPCM7XX_WDG0_IRQ            = 47,   /* Timer Module 0 Watchdog */
     NPCM7XX_WDG1_IRQ,                   /* Timer Module 1 Watchdog */
     NPCM7XX_WDG2_IRQ,                   /* Timer Module 2 Watchdog */
+    NPCM7XX_EHCI_IRQ            = 61,
+    NPCM7XX_OHCI_IRQ            = 62,
 };
 
 /* Total number of GIC interrupts, including internal Cortex-A9 interrupts. */
@@ -263,6 +269,9 @@ static void npcm7xx_init(Object *obj)
         object_initialize_child(obj, "tim[*]", &s->tim[i], TYPE_NPCM7XX_TIMER);
     }
 
+    object_initialize_child(obj, "ehci", &s->ehci, TYPE_NPCM7XX_EHCI);
+    object_initialize_child(obj, "ohci", &s->ohci, TYPE_SYSBUS_OHCI);
+
     QEMU_BUILD_BUG_ON(ARRAY_SIZE(npcm7xx_fiu) != ARRAY_SIZE(s->fiu));
     for (i = 0; i < ARRAY_SIZE(s->fiu); i++) {
         object_initialize_child(obj, npcm7xx_fiu[i].name, &s->fiu[i],
@@ -380,6 +389,22 @@ static void npcm7xx_realize(DeviceState *dev, Error **errp)
     sysbus_realize(SYS_BUS_DEVICE(&s->rng), &error_abort);
     sysbus_mmio_map(SYS_BUS_DEVICE(&s->rng), 0, NPCM7XX_RNG_BA);
 
+    /* USB Host */
+    object_property_set_bool(OBJECT(&s->ehci), "companion-enable", true,
+                             &error_abort);
+    sysbus_realize(SYS_BUS_DEVICE(&s->ehci), &error_abort);
+    sysbus_mmio_map(SYS_BUS_DEVICE(&s->ehci), 0, NPCM7XX_EHCI_BA);
+    sysbus_connect_irq(SYS_BUS_DEVICE(&s->ehci), 0,
+                       npcm7xx_irq(s, NPCM7XX_EHCI_IRQ));
+
+    object_property_set_str(OBJECT(&s->ohci), "masterbus", "usb-bus.0",
+                            &error_abort);
+    object_property_set_uint(OBJECT(&s->ohci), "num-ports", 1, &error_abort);
+    sysbus_realize(SYS_BUS_DEVICE(&s->ohci), &error_abort);
+    sysbus_mmio_map(SYS_BUS_DEVICE(&s->ohci), 0, NPCM7XX_OHCI_BA);
+    sysbus_connect_irq(SYS_BUS_DEVICE(&s->ohci), 0,
+                       npcm7xx_irq(s, NPCM7XX_OHCI_IRQ));
+
     /*
      * Flash Interface Unit (FIU). Can fail if incorrect number of chip selects
      * specified, but this is a programming error.
@@ -464,8 +489,6 @@ static void npcm7xx_realize(DeviceState *dev, Error **errp)
     create_unimplemented_device("npcm7xx.mcphy",        0xf05f0000,  64 * KiB);
     create_unimplemented_device("npcm7xx.gmac1",        0xf0802000,   8 * KiB);
     create_unimplemented_device("npcm7xx.gmac2",        0xf0804000,   8 * KiB);
-    create_unimplemented_device("npcm7xx.ehci",         0xf0806000,   4 * KiB);
-    create_unimplemented_device("npcm7xx.ohci",         0xf0807000,   4 * KiB);
     create_unimplemented_device("npcm7xx.vcd",          0xf0810000,  64 * KiB);
     create_unimplemented_device("npcm7xx.ece",          0xf0820000,   8 * KiB);
     create_unimplemented_device("npcm7xx.vdma",         0xf0822000,   8 * KiB);