@@ -12,6 +12,7 @@ common-obj-$(CONFIG_USB_XHCI_NEC) += hcd-xhci-nec.o
common-obj-$(CONFIG_USB_MUSB) += hcd-musb.o
obj-$(CONFIG_TUSB6010) += tusb6010.o
+obj-$(CONFIG_IMX) += chipidea.o
# emulated usb devices
common-obj-$(CONFIG_USB) += dev-hub.o
new file mode 100644
@@ -0,0 +1,176 @@
+/*
+ * Copyright (c) 2017, Impinj, Inc.
+ *
+ * Chipidea USB block emulation code
+ *
+ * Author: Andrey Smirnov <andrew.smirnov@gmail.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include "qemu/osdep.h"
+#include "hw/usb/hcd-ehci.h"
+#include "hw/usb/chipidea.h"
+#include "qemu/log.h"
+
+enum {
+ CHIPIDEA_USBx_DCIVERSION = 0x000,
+ CHIPIDEA_USBx_DCCPARAMS = 0x004,
+ CHIPIDEA_USBx_DCCPARAMS_HC = BIT(8),
+};
+
+static uint64_t chipidea_read(void *opaque, hwaddr offset,
+ unsigned size)
+{
+ return 0;
+}
+
+static void chipidea_write(void *opaque, hwaddr offset,
+ uint64_t value, unsigned size)
+{
+}
+
+static const struct MemoryRegionOps chipidea_ops = {
+ .read = chipidea_read,
+ .write = chipidea_write,
+ .endianness = DEVICE_NATIVE_ENDIAN,
+ .impl = {
+ /*
+ * Our device would not work correctly if the guest was doing
+ * unaligned access. This might not be a limitation on the
+ * real device but in practice there is no reason for a guest
+ * to access this device unaligned.
+ */
+ .min_access_size = 4,
+ .max_access_size = 4,
+ .unaligned = false,
+ },
+};
+
+static uint64_t chipidea_dc_read(void *opaque, hwaddr offset,
+ unsigned size)
+{
+ switch (offset) {
+ case CHIPIDEA_USBx_DCIVERSION:
+ return 0x1;
+ case CHIPIDEA_USBx_DCCPARAMS:
+ /*
+ * Real hardware (at least i.MX7) will also report the
+ * controller as "Device Capable" (and 8 supported endpoints),
+ * but there doesn't seem to be much point in doing so, since
+ * we don't emulate that part.
+ */
+ return CHIPIDEA_USBx_DCCPARAMS_HC;
+ }
+
+ return 0;
+}
+
+static void chipidea_dc_write(void *opaque, hwaddr offset,
+ uint64_t value, unsigned size)
+{
+}
+
+static const struct MemoryRegionOps chipidea_dc_ops = {
+ .read = chipidea_dc_read,
+ .write = chipidea_dc_write,
+ .endianness = DEVICE_NATIVE_ENDIAN,
+ .impl = {
+ /*
+ * Our device would not work correctly if the guest was doing
+ * unaligned access. This might not be a limitation on the real
+ * device but in practice there is no reason for a guest to access
+ * this device unaligned.
+ */
+ .min_access_size = 4,
+ .max_access_size = 4,
+ .unaligned = false,
+ },
+};
+
+static void chipidea_init(Object *obj)
+{
+ EHCIState *ehci = &SYS_BUS_EHCI(obj)->ehci;
+ ChipideaState *ci = CHIPIDEA(obj);
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(ci->iomem); i++) {
+ const struct {
+ const char *name;
+ hwaddr offset;
+ uint64_t size;
+ const struct MemoryRegionOps *ops;
+ } regions[ARRAY_SIZE(ci->iomem)] = {
+ /*
+ * Registers located between offsets 0x000 and 0xFC
+ */
+ {
+ .name = TYPE_CHIPIDEA ".misc",
+ .offset = 0x000,
+ .size = 0x100,
+ .ops = &chipidea_ops,
+ },
+ /*
+ * Registers located between offsets 0x1A4 and 0x1DC
+ */
+ {
+ .name = TYPE_CHIPIDEA ".endpoints",
+ .offset = 0x1A4,
+ .size = 0x1DC - 0x1A4 + 4,
+ .ops = &chipidea_ops,
+ },
+ /*
+ * USB_x_DCIVERSION and USB_x_DCCPARAMS
+ */
+ {
+ .name = TYPE_CHIPIDEA ".dc",
+ .offset = 0x120,
+ .size = 8,
+ .ops = &chipidea_dc_ops,
+ },
+ };
+
+ memory_region_init_io(&ci->iomem[i],
+ obj,
+ regions[i].ops,
+ ci,
+ regions[i].name,
+ regions[i].size);
+
+ memory_region_add_subregion(&ehci->mem,
+ regions[i].offset,
+ &ci->iomem[i]);
+ }
+}
+
+static void chipidea_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ SysBusEHCIClass *sec = SYS_BUS_EHCI_CLASS(klass);
+
+ /*
+ * Offsets used were taken from i.MX7Dual Applications Processor
+ * Reference Manual, Rev 0.1, p. 3177, Table 11-59
+ */
+ sec->capsbase = 0x100;
+ sec->opregbase = 0x140;
+ sec->portnr = 1;
+
+ set_bit(DEVICE_CATEGORY_USB, dc->categories);
+ dc->desc = "Chipidea USB Module";
+}
+
+static const TypeInfo chipidea_info = {
+ .name = TYPE_CHIPIDEA,
+ .parent = TYPE_SYS_BUS_EHCI,
+ .instance_size = sizeof(ChipideaState),
+ .instance_init = chipidea_init,
+ .class_init = chipidea_class_init,
+};
+
+static void chipidea_register_type(void)
+{
+ type_register_static(&chipidea_info);
+}
+type_init(chipidea_register_type)
new file mode 100644
@@ -0,0 +1,16 @@
+#ifndef CHIPIDEA_H
+#define CHIPIDEA_H
+
+#include "hw/usb/hcd-ehci.h"
+
+typedef struct ChipideaState {
+ /*< private >*/
+ EHCISysBusState parent_obj;
+
+ MemoryRegion iomem[3];
+} ChipideaState;
+
+#define TYPE_CHIPIDEA "usb-chipidea"
+#define CHIPIDEA(obj) OBJECT_CHECK(ChipideaState, (obj), TYPE_CHIPIDEA)
+
+#endif /* CHIPIDEA_H */
Add code to emulate Chipidea USB IP (used in i.MX SoCs). Tested to work against: -usb -drive if=none,id=stick,file=usb.img,format=raw -device \ usb-storage,bus=usb-bus.0,drive=stick Cc: Peter Maydell <peter.maydell@linaro.org> Cc: Jason Wang <jasowang@redhat.com> Cc: Philippe Mathieu-Daudé <f4bug@amsat.org> Cc: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org Cc: yurovsky@gmail.com Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> --- hw/usb/Makefile.objs | 1 + hw/usb/chipidea.c | 176 ++++++++++++++++++++++++++++++++++++++++++++++ include/hw/usb/chipidea.h | 16 +++++ 3 files changed, 193 insertions(+) create mode 100644 hw/usb/chipidea.c create mode 100644 include/hw/usb/chipidea.h