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https://github.com/brain-hackers/u-boot-brain
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![Tom Rini](/assets/img/avatar_default.png)
We have a large number of places where while we historically referenced gd in the code we no longer do, as well as cases where the code added that line "just in case" during development and never dropped it. Signed-off-by: Tom Rini <trini@konsulko.com>
159 lines
3.7 KiB
C
159 lines
3.7 KiB
C
/*
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* (C) Copyright 2015 Google, Inc
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* Written by Simon Glass <sjg@chromium.org>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <dm.h>
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#include <usb.h>
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#include <dm/root.h>
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struct sandbox_usb_ctrl {
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int rootdev;
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};
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static void usbmon_trace(struct udevice *bus, ulong pipe,
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struct devrequest *setup, struct udevice *emul)
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{
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static const char types[] = "ZICB";
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int type;
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type = (pipe & USB_PIPE_TYPE_MASK) >> USB_PIPE_TYPE_SHIFT;
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debug("0 0 S %c%c:%d:%03ld:%ld", types[type],
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pipe & USB_DIR_IN ? 'i' : 'o',
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bus->seq,
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(pipe & USB_PIPE_DEV_MASK) >> USB_PIPE_DEV_SHIFT,
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(pipe & USB_PIPE_EP_MASK) >> USB_PIPE_EP_SHIFT);
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if (setup) {
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debug(" s %02x %02x %04x %04x %04x", setup->requesttype,
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setup->request, setup->value, setup->index,
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setup->length);
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}
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debug(" %s", emul ? emul->name : "(no emul found)");
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debug("\n");
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}
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static int sandbox_submit_control(struct udevice *bus,
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struct usb_device *udev,
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unsigned long pipe,
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void *buffer, int length,
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struct devrequest *setup)
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{
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struct sandbox_usb_ctrl *ctrl = dev_get_priv(bus);
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struct udevice *emul;
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int ret;
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/* Just use child of dev as emulator? */
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debug("%s: bus=%s\n", __func__, bus->name);
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ret = usb_emul_find(bus, pipe, udev->portnr, &emul);
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usbmon_trace(bus, pipe, setup, emul);
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if (ret)
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return ret;
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if (usb_pipedevice(pipe) == ctrl->rootdev) {
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if (setup->request == USB_REQ_SET_ADDRESS) {
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debug("%s: Set root hub's USB address\n", __func__);
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ctrl->rootdev = le16_to_cpu(setup->value);
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}
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}
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ret = usb_emul_control(emul, udev, pipe, buffer, length, setup);
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if (ret < 0) {
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debug("ret=%d\n", ret);
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udev->status = ret;
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udev->act_len = 0;
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} else {
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udev->status = 0;
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udev->act_len = ret;
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}
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return ret;
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}
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static int sandbox_submit_bulk(struct udevice *bus, struct usb_device *udev,
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unsigned long pipe, void *buffer, int length)
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{
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struct udevice *emul;
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int ret;
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/* Just use child of dev as emulator? */
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debug("%s: bus=%s\n", __func__, bus->name);
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ret = usb_emul_find(bus, pipe, udev->portnr, &emul);
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usbmon_trace(bus, pipe, NULL, emul);
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if (ret)
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return ret;
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ret = usb_emul_bulk(emul, udev, pipe, buffer, length);
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if (ret < 0) {
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debug("ret=%d\n", ret);
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udev->status = ret;
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udev->act_len = 0;
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} else {
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udev->status = 0;
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udev->act_len = ret;
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}
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return ret;
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}
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static int sandbox_submit_int(struct udevice *bus, struct usb_device *udev,
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unsigned long pipe, void *buffer, int length,
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int interval)
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{
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struct udevice *emul;
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int ret;
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/* Just use child of dev as emulator? */
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debug("%s: bus=%s\n", __func__, bus->name);
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ret = usb_emul_find(bus, pipe, udev->portnr, &emul);
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usbmon_trace(bus, pipe, NULL, emul);
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if (ret)
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return ret;
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ret = usb_emul_int(emul, udev, pipe, buffer, length, interval);
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return ret;
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}
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static int sandbox_alloc_device(struct udevice *dev, struct usb_device *udev)
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{
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struct sandbox_usb_ctrl *ctrl = dev_get_priv(dev);
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/*
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* Root hub will be the first device to be initailized.
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* If this device is a root hub, initialize its device speed
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* to high speed as we are a USB 2.0 controller.
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*/
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if (ctrl->rootdev == 0)
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udev->speed = USB_SPEED_HIGH;
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return 0;
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}
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static int sandbox_usb_probe(struct udevice *dev)
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{
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return 0;
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}
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static const struct dm_usb_ops sandbox_usb_ops = {
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.control = sandbox_submit_control,
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.bulk = sandbox_submit_bulk,
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.interrupt = sandbox_submit_int,
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.alloc_device = sandbox_alloc_device,
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};
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static const struct udevice_id sandbox_usb_ids[] = {
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{ .compatible = "sandbox,usb" },
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{ }
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};
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U_BOOT_DRIVER(usb_sandbox) = {
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.name = "usb_sandbox",
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.id = UCLASS_USB,
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.of_match = sandbox_usb_ids,
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.probe = sandbox_usb_probe,
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.ops = &sandbox_usb_ops,
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.priv_auto_alloc_size = sizeof(struct sandbox_usb_ctrl),
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};
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