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https://github.com/AsahiLinux/u-boot
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8a8d24bdf1
Try to maintain some consistency between these variables by using _plat as a suffix for them. Signed-off-by: Simon Glass <sjg@chromium.org>
334 lines
7.9 KiB
C
334 lines
7.9 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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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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#include <common.h>
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#include <dm.h>
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#include <log.h>
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#include <usb.h>
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#include <dm/device-internal.h>
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/* We only support up to 8 */
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#define SANDBOX_NUM_PORTS 4
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struct sandbox_hub_plat {
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struct usb_dev_plat plat;
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int port; /* Port number (numbered from 0) */
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};
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enum {
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STRING_MANUFACTURER = 1,
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STRING_PRODUCT,
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STRING_SERIAL,
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STRING_count,
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};
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static struct usb_string hub_strings[] = {
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{STRING_MANUFACTURER, "sandbox"},
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{STRING_PRODUCT, "hub"},
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{STRING_SERIAL, "2345"},
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{},
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};
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static struct usb_device_descriptor hub_device_desc = {
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.bLength = sizeof(hub_device_desc),
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.bDescriptorType = USB_DT_DEVICE,
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.bcdUSB = __constant_cpu_to_le16(0x0200),
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.bDeviceClass = USB_CLASS_HUB,
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.bDeviceSubClass = 0,
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.bDeviceProtocol = 0,
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.idVendor = __constant_cpu_to_le16(0x1234),
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.idProduct = __constant_cpu_to_le16(0x5678),
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.iManufacturer = STRING_MANUFACTURER,
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.iProduct = STRING_PRODUCT,
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.iSerialNumber = STRING_SERIAL,
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.bNumConfigurations = 1,
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};
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static struct usb_config_descriptor hub_config1 = {
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.bLength = sizeof(hub_config1),
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.bDescriptorType = USB_DT_CONFIG,
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/* wTotalLength is set up by usb-emul-uclass */
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.bNumInterfaces = 1,
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.bConfigurationValue = 0,
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.iConfiguration = 0,
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.bmAttributes = 1 << 7,
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.bMaxPower = 50,
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};
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static struct usb_interface_descriptor hub_interface0 = {
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.bLength = sizeof(hub_interface0),
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.bDescriptorType = USB_DT_INTERFACE,
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.bInterfaceNumber = 0,
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.bAlternateSetting = 0,
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.bNumEndpoints = 1,
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.bInterfaceClass = USB_CLASS_HUB,
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.bInterfaceSubClass = 0,
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.bInterfaceProtocol = US_PR_CB,
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.iInterface = 0,
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};
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static struct usb_endpoint_descriptor hub_endpoint0_in = {
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.bLength = USB_DT_ENDPOINT_SIZE,
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.bDescriptorType = USB_DT_ENDPOINT,
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.bEndpointAddress = 1 | USB_DIR_IN,
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.bmAttributes = USB_ENDPOINT_XFER_INT,
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.wMaxPacketSize = __constant_cpu_to_le16(1024),
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.bInterval = 0,
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};
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static struct usb_hub_descriptor hub_desc = {
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.bLength = sizeof(hub_desc),
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.bDescriptorType = USB_DT_HUB,
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.bNbrPorts = SANDBOX_NUM_PORTS,
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.wHubCharacteristics = __constant_cpu_to_le16(1 << 0 | 1 << 3 |
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1 << 7),
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.bPwrOn2PwrGood = 2,
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.bHubContrCurrent = 5,
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{
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{
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/* all ports removeable */
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.DeviceRemovable = {0, 0xff}
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}
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}
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#if SANDBOX_NUM_PORTS > 8
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#error "This code sets up an incorrect mask"
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#endif
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};
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static void *hub_desc_list[] = {
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&hub_device_desc,
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&hub_config1,
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&hub_interface0,
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&hub_endpoint0_in,
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&hub_desc,
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NULL,
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};
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struct sandbox_hub_priv {
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int status[SANDBOX_NUM_PORTS];
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int change[SANDBOX_NUM_PORTS];
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};
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static struct udevice *hub_find_device(struct udevice *hub, int port,
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enum usb_device_speed *speed)
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{
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struct udevice *dev;
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struct usb_generic_descriptor **gen_desc;
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struct usb_device_descriptor **dev_desc;
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for (device_find_first_child(hub, &dev);
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dev;
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device_find_next_child(&dev)) {
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struct sandbox_hub_plat *plat;
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plat = dev_get_parent_plat(dev);
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if (plat->port == port) {
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gen_desc = plat->plat.desc_list;
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gen_desc = usb_emul_find_descriptor(gen_desc,
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USB_DT_DEVICE, 0);
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dev_desc = (struct usb_device_descriptor **)gen_desc;
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switch (le16_to_cpu((*dev_desc)->bcdUSB)) {
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case 0x0100:
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*speed = USB_SPEED_LOW;
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break;
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case 0x0101:
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*speed = USB_SPEED_FULL;
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break;
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case 0x0200:
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default:
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*speed = USB_SPEED_HIGH;
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break;
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}
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return dev;
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}
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}
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return NULL;
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}
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static int clrset_post_state(struct udevice *hub, int port, int clear, int set)
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{
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struct sandbox_hub_priv *priv = dev_get_priv(hub);
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int *status = &priv->status[port];
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int *change = &priv->change[port];
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int ret = 0;
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if ((clear | set) & USB_PORT_STAT_POWER) {
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enum usb_device_speed speed;
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struct udevice *dev = hub_find_device(hub, port, &speed);
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if (dev) {
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if (set & USB_PORT_STAT_POWER) {
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ret = device_probe(dev);
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debug("%s: %s: power on, probed, ret=%d\n",
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__func__, dev->name, ret);
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if (!ret) {
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set |= USB_PORT_STAT_CONNECTION |
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USB_PORT_STAT_ENABLE;
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if (speed == USB_SPEED_LOW)
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set |= USB_PORT_STAT_LOW_SPEED;
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else if (speed == USB_SPEED_HIGH)
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set |= USB_PORT_STAT_HIGH_SPEED;
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}
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} else if (clear & USB_PORT_STAT_POWER) {
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debug("%s: %s: power off, removed, ret=%d\n",
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__func__, dev->name, ret);
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ret = device_remove(dev, DM_REMOVE_NORMAL);
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clear |= USB_PORT_STAT_CONNECTION;
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}
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}
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}
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*change |= *status & clear;
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*change |= ~*status & set;
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*change &= 0x1f;
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*status = (*status & ~clear) | set;
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return ret;
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}
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static int sandbox_hub_submit_control_msg(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_hub_priv *priv = dev_get_priv(bus);
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int ret = 0;
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if (pipe == usb_rcvctrlpipe(udev, 0)) {
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switch (setup->requesttype) {
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case USB_RT_HUB | USB_DIR_IN:
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switch (setup->request) {
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case USB_REQ_GET_STATUS: {
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struct usb_hub_status *hubsts = buffer;
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hubsts->wHubStatus = 0;
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hubsts->wHubChange = 0;
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udev->status = 0;
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udev->act_len = sizeof(*hubsts);
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return 0;
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}
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default:
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debug("%s: rx ctl requesttype=%x, request=%x\n",
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__func__, setup->requesttype,
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setup->request);
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break;
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}
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case USB_RT_PORT | USB_DIR_IN:
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switch (setup->request) {
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case USB_REQ_GET_STATUS: {
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struct usb_port_status *portsts = buffer;
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int port;
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port = (setup->index & USB_HUB_PORT_MASK) - 1;
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portsts->wPortStatus = priv->status[port];
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portsts->wPortChange = priv->change[port];
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udev->status = 0;
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udev->act_len = sizeof(*portsts);
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return 0;
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}
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}
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default:
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debug("%s: rx ctl requesttype=%x, request=%x\n",
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__func__, setup->requesttype, setup->request);
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break;
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}
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} else if (pipe == usb_sndctrlpipe(udev, 0)) {
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switch (setup->requesttype) {
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case USB_RT_PORT:
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switch (setup->request) {
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case USB_REQ_SET_FEATURE: {
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int port;
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port = (setup->index & USB_HUB_PORT_MASK) - 1;
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debug("set feature port=%x, feature=%x\n",
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port, setup->value);
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if (setup->value < USB_PORT_FEAT_C_CONNECTION) {
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ret = clrset_post_state(bus, port, 0,
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1 << setup->value);
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} else {
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debug(" ** Invalid feature\n");
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}
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return ret;
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}
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case USB_REQ_CLEAR_FEATURE: {
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int port;
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port = (setup->index & USB_HUB_PORT_MASK) - 1;
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debug("clear feature port=%x, feature=%x\n",
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port, setup->value);
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if (setup->value < USB_PORT_FEAT_C_CONNECTION) {
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ret = clrset_post_state(bus, port,
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1 << setup->value, 0);
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} else {
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priv->change[port] &= 1 <<
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(setup->value - 16);
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}
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udev->status = 0;
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return 0;
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}
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default:
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debug("%s: tx ctl requesttype=%x, request=%x\n",
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__func__, setup->requesttype,
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setup->request);
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break;
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}
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default:
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debug("%s: tx ctl requesttype=%x, request=%x\n",
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__func__, setup->requesttype, setup->request);
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break;
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}
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}
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debug("pipe=%lx\n", pipe);
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return -EIO;
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}
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static int sandbox_hub_bind(struct udevice *dev)
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{
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return usb_emul_setup_device(dev, hub_strings, hub_desc_list);
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}
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static int sandbox_child_post_bind(struct udevice *dev)
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{
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struct sandbox_hub_plat *plat = dev_get_parent_plat(dev);
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struct usb_emul_plat *emul = dev_get_uclass_plat(dev);
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plat->port = dev_read_u32_default(dev, "reg", -1);
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emul->port1 = plat->port + 1;
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return 0;
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}
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static const struct dm_usb_ops sandbox_usb_hub_ops = {
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.control = sandbox_hub_submit_control_msg,
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};
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static const struct udevice_id sandbox_usb_hub_ids[] = {
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{ .compatible = "sandbox,usb-hub" },
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{ }
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};
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U_BOOT_DRIVER(usb_sandbox_hub) = {
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.name = "usb_sandbox_hub",
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.id = UCLASS_USB_EMUL,
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.of_match = sandbox_usb_hub_ids,
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.bind = sandbox_hub_bind,
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.ops = &sandbox_usb_hub_ops,
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.priv_auto = sizeof(struct sandbox_hub_priv),
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.per_child_plat_auto = sizeof(struct sandbox_hub_plat),
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.child_post_bind = sandbox_child_post_bind,
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};
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