This driver supports using emulation devices to provide a USB bus within
sandbox.
Signed-off-by: Simon Glass <s...@chromium.org>
---
Changes in v2: None
drivers/usb/host/Makefile | 1 +
drivers/usb/host/usb-sandbox.c | 117 +++++++++++++++++++++++++++++++++++++++++
2 files changed, 118 insertions(+)
create mode 100644 drivers/usb/host/usb-sandbox.c
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index 9419295..7658f87 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -7,6 +7,7 @@
ifdef CONFIG_DM_USB
obj-$(CONFIG_CMD_USB) += usb-uclass.o
+obj-$(CONFIG_SANDBOX) += usb-sandbox.o
endif
# ohci
diff --git a/drivers/usb/host/usb-sandbox.c b/drivers/usb/host/usb-sandbox.c
new file mode 100644
index 0000000..c5f9822
--- /dev/null
+++ b/drivers/usb/host/usb-sandbox.c
@@ -0,0 +1,117 @@
+/*
+ * (C) Copyright 2015 Google, Inc
+ * Written by Simon Glass <s...@chromium.org>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <usb.h>
+#include <dm/root.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static void usbmon_trace(struct udevice *bus, ulong pipe,
+ struct devrequest *setup, struct udevice *emul)
+{
+ static const char types[] = "ZICB";
+ int type;
+
+ type = (pipe & USB_PIPE_TYPE_MASK) >> USB_PIPE_TYPE_SHIFT;
+ debug("0 0 S %c%c:%d:%03ld:%ld", types[type],
+ pipe & USB_DIR_IN ? 'i' : 'o',
+ bus->seq,
+ (pipe & USB_PIPE_DEV_MASK) >> USB_PIPE_DEV_SHIFT,
+ (pipe & USB_PIPE_EP_MASK) >> USB_PIPE_EP_SHIFT);
+ if (setup) {
+ debug(" s %02x %02x %04x %04x %04x", setup->requesttype,
+ setup->request, setup->value, setup->index,
+ setup->length);
+ }
+ debug(" %s", emul ? emul->name : "(no emul found)");
+
+ debug("\n");
+}
+
+static int sandbox_submit_control(struct udevice *bus,
+ struct usb_device *udev,
+ unsigned long pipe,
+ void *buffer, int length,
+ struct devrequest *setup)
+{
+ struct udevice *emul;
+ int ret;
+
+ /* Just use child of dev as emulator? */
+ debug("%s: bus=%s\n", __func__, bus->name);
+ ret = usb_emul_find(bus, pipe, &emul);
+ usbmon_trace(bus, pipe, setup, emul);
+ if (ret)
+ return ret;
+ ret = usb_emul_control(emul, udev, pipe, buffer, length, setup);
+ if (ret < 0) {
+ debug("ret=%d\n", ret);
+ udev->status = ret;
+ udev->act_len = 0;
+ } else {
+ udev->status = 0;
+ udev->act_len = ret;
+ }
+
+ return ret;
+}
+
+static int sandbox_submit_bulk(struct udevice *bus, struct usb_device *udev,
+ unsigned long pipe, void *buffer, int length)
+{
+ struct udevice *emul;
+ int ret;
+
+ /* Just use child of dev as emulator? */
+ debug("%s: bus=%s\n", __func__, bus->name);
+ ret = usb_emul_find(bus, pipe, &emul);
+ usbmon_trace(bus, pipe, NULL, emul);
+ if (ret)
+ return ret;
+ ret = usb_emul_bulk(emul, udev, pipe, buffer, length);
+ if (ret < 0) {
+ debug("ret=%d\n", ret);
+ udev->status = ret;
+ udev->act_len = 0;
+ } else {
+ udev->status = 0;
+ udev->act_len = ret;
+ }
+
+ return ret;
+}
+
+static int sandbox_alloc_device(struct udevice *dev, struct usb_device *udev)
+{
+ return 0;
+}
+
+static int sandbox_usb_probe(struct udevice *dev)
+{
+ return 0;
+}
+
+static const struct dm_usb_ops sandbox_usb_ops = {
+ .control = sandbox_submit_control,
+ .bulk = sandbox_submit_bulk,
+ .alloc_device = sandbox_alloc_device,
+};
+
+static const struct udevice_id sandbox_usb_ids[] = {
+ { .compatible = "sandbox,usb" },
+ { }
+};
+
+U_BOOT_DRIVER(usb_sandbox) = {
+ .name = "usb_sandbox",
+ .id = UCLASS_USB,
+ .of_match = sandbox_usb_ids,
+ .probe = sandbox_usb_probe,
+ .ops = &sandbox_usb_ops,
+};
--
2.2.0.rc0.207.ga3a616c
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
http://lists.denx.de/mailman/listinfo/u-boot
