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618 lines
20 KiB
618 lines
20 KiB
// Copyright 2023 Stefan Kerkmann
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// Copyright 2020-2021 Ryan (@fauxpark)
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// Copyright 2020 Nick Brassel (@tzarc)
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// Copyright 2020 a-chol
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// Copyright 2020 xyzz
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// Copyright 2020 Joel Challis (@zvecr)
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// Copyright 2020 George (@goshdarnharris)
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// Copyright 2018 James Laird-Wah
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// Copyright 2018 Drashna Jaelre (@drashna)
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// Copyright 2016 Fredizzimo
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// Copyright 2016 Giovanni Di Sirio
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// SPDX-License-Identifier: GPL-3.0-or-later OR Apache-2.0
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#include <ch.h>
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#include <hal.h>
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#include <string.h>
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#include "usb_main.h"
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#include "usb_report_handling.h"
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#include "host.h"
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#include "suspend.h"
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#include "timer.h"
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#ifdef SLEEP_LED_ENABLE
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# include "sleep_led.h"
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# include "led.h"
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#endif
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#include "wait.h"
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#include "usb_endpoints.h"
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#include "usb_device_state.h"
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#include "usb_descriptor.h"
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#include "usb_driver.h"
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#include "usb_types.h"
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#ifdef NKRO_ENABLE
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# include "keycode_config.h"
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extern keymap_config_t keymap_config;
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#endif
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/* ---------------------------------------------------------
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* Global interface variables and declarations
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* ---------------------------------------------------------
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*/
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#ifndef usb_lld_connect_bus
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# define usb_lld_connect_bus(usbp)
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#endif
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#ifndef usb_lld_disconnect_bus
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# define usb_lld_disconnect_bus(usbp)
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#endif
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extern usb_endpoint_in_t usb_endpoints_in[USB_ENDPOINT_IN_COUNT];
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extern usb_endpoint_out_t usb_endpoints_out[USB_ENDPOINT_OUT_COUNT];
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uint8_t _Alignas(2) keyboard_idle = 0;
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uint8_t _Alignas(2) keyboard_protocol = 1;
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uint8_t keyboard_led_state = 0;
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static bool __attribute__((__unused__)) send_report_buffered(usb_endpoint_in_lut_t endpoint, void *report, size_t size);
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static void __attribute__((__unused__)) flush_report_buffered(usb_endpoint_in_lut_t endpoint, bool padded);
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static bool __attribute__((__unused__)) receive_report(usb_endpoint_out_lut_t endpoint, void *report, size_t size);
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/* ---------------------------------------------------------
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* Descriptors and USB driver objects
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* ---------------------------------------------------------
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*/
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/* USB Low Level driver specific endpoint fields */
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#if !defined(usb_lld_endpoint_fields)
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# define usb_lld_endpoint_fields \
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2, /* IN multiplier */ \
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NULL, /* SETUP buffer (not a SETUP endpoint) */
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#endif
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/*
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* Handles the GET_DESCRIPTOR callback
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*
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* Returns the proper descriptor
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*/
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static const USBDescriptor *usb_get_descriptor_cb(USBDriver *usbp, uint8_t dtype, uint8_t dindex, uint16_t wIndex) {
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usb_control_request_t *setup = (usb_control_request_t *)usbp->setup;
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static USBDescriptor descriptor;
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descriptor.ud_string = NULL;
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descriptor.ud_size = get_usb_descriptor(setup->wValue.word, setup->wIndex, setup->wLength, (const void **const) & descriptor.ud_string);
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if (descriptor.ud_string == NULL) {
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return NULL;
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}
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return &descriptor;
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}
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/* ---------------------------------------------------------
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* USB driver functions
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* ---------------------------------------------------------
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*/
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#define USB_EVENT_QUEUE_SIZE 16
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usbevent_t event_queue[USB_EVENT_QUEUE_SIZE];
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uint8_t event_queue_head;
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uint8_t event_queue_tail;
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void usb_event_queue_init(void) {
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// Initialise the event queue
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memset(&event_queue, 0, sizeof(event_queue));
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event_queue_head = 0;
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event_queue_tail = 0;
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}
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static inline bool usb_event_queue_enqueue(usbevent_t event) {
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uint8_t next = (event_queue_head + 1) % USB_EVENT_QUEUE_SIZE;
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if (next == event_queue_tail) {
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return false;
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}
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event_queue[event_queue_head] = event;
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event_queue_head = next;
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return true;
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}
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static inline bool usb_event_queue_dequeue(usbevent_t *event) {
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if (event_queue_head == event_queue_tail) {
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return false;
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}
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*event = event_queue[event_queue_tail];
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event_queue_tail = (event_queue_tail + 1) % USB_EVENT_QUEUE_SIZE;
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return true;
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}
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static inline void usb_event_suspend_handler(void) {
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usb_device_state_set_suspend(USB_DRIVER.configuration != 0, USB_DRIVER.configuration);
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#ifdef SLEEP_LED_ENABLE
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sleep_led_enable();
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#endif /* SLEEP_LED_ENABLE */
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}
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static inline void usb_event_wakeup_handler(void) {
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suspend_wakeup_init();
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usb_device_state_set_resume(USB_DRIVER.configuration != 0, USB_DRIVER.configuration);
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#ifdef SLEEP_LED_ENABLE
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sleep_led_disable();
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// NOTE: converters may not accept this
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led_set(host_keyboard_leds());
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#endif /* SLEEP_LED_ENABLE */
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}
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bool last_suspend_state = false;
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void usb_event_queue_task(void) {
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usbevent_t event;
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while (usb_event_queue_dequeue(&event)) {
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switch (event) {
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case USB_EVENT_SUSPEND:
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last_suspend_state = true;
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usb_event_suspend_handler();
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break;
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case USB_EVENT_WAKEUP:
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last_suspend_state = false;
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usb_event_wakeup_handler();
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break;
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case USB_EVENT_CONFIGURED:
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usb_device_state_set_configuration(USB_DRIVER.configuration != 0, USB_DRIVER.configuration);
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break;
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case USB_EVENT_UNCONFIGURED:
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usb_device_state_set_configuration(false, 0);
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break;
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case USB_EVENT_RESET:
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usb_device_state_set_reset();
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break;
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default:
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// Nothing to do, we don't handle it.
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break;
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}
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}
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}
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/* Handles the USB driver global events. */
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static void usb_event_cb(USBDriver *usbp, usbevent_t event) {
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switch (event) {
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case USB_EVENT_ADDRESS:
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return;
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case USB_EVENT_CONFIGURED:
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osalSysLockFromISR();
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for (int i = 0; i < USB_ENDPOINT_IN_COUNT; i++) {
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usb_endpoint_in_configure_cb(&usb_endpoints_in[i]);
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}
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for (int i = 0; i < USB_ENDPOINT_OUT_COUNT; i++) {
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usb_endpoint_out_configure_cb(&usb_endpoints_out[i]);
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}
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osalSysUnlockFromISR();
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if (last_suspend_state) {
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usb_event_queue_enqueue(USB_EVENT_WAKEUP);
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}
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usb_event_queue_enqueue(USB_EVENT_CONFIGURED);
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return;
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case USB_EVENT_SUSPEND:
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/* Falls into.*/
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case USB_EVENT_UNCONFIGURED:
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/* Falls into.*/
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case USB_EVENT_RESET:
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usb_event_queue_enqueue(event);
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chSysLockFromISR();
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for (int i = 0; i < USB_ENDPOINT_IN_COUNT; i++) {
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usb_endpoint_in_suspend_cb(&usb_endpoints_in[i]);
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}
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for (int i = 0; i < USB_ENDPOINT_OUT_COUNT; i++) {
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usb_endpoint_out_suspend_cb(&usb_endpoints_out[i]);
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}
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chSysUnlockFromISR();
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return;
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case USB_EVENT_WAKEUP:
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chSysLockFromISR();
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for (int i = 0; i < USB_ENDPOINT_IN_COUNT; i++) {
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usb_endpoint_in_wakeup_cb(&usb_endpoints_in[i]);
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}
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for (int i = 0; i < USB_ENDPOINT_OUT_COUNT; i++) {
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usb_endpoint_out_wakeup_cb(&usb_endpoints_out[i]);
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}
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chSysUnlockFromISR();
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usb_event_queue_enqueue(USB_EVENT_WAKEUP);
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return;
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case USB_EVENT_STALLED:
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return;
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}
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}
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/*
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* Appendix G: HID Request Support Requirements
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*
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* The following table enumerates the requests that need to be supported by various types of HID class devices.
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* Device type GetReport SetReport GetIdle SetIdle GetProtocol SetProtocol
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* ------------------------------------------------------------------------------------------
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* Boot Mouse Required Optional Optional Optional Required Required
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* Non-Boot Mouse Required Optional Optional Optional Optional Optional
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* Boot Keyboard Required Optional Required Required Required Required
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* Non-Boot Keybrd Required Optional Required Required Optional Optional
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* Other Device Required Optional Optional Optional Optional Optional
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*/
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static uint8_t _Alignas(4) set_report_buf[2];
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static void set_led_transfer_cb(USBDriver *usbp) {
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usb_control_request_t *setup = (usb_control_request_t *)usbp->setup;
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if (setup->wLength == 2) {
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uint8_t report_id = set_report_buf[0];
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if ((report_id == REPORT_ID_KEYBOARD) || (report_id == REPORT_ID_NKRO)) {
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keyboard_led_state = set_report_buf[1];
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}
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} else {
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keyboard_led_state = set_report_buf[0];
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}
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}
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static bool usb_requests_hook_cb(USBDriver *usbp) {
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usb_control_request_t *setup = (usb_control_request_t *)usbp->setup;
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/* Handle HID class specific requests */
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if ((setup->bmRequestType & (USB_RTYPE_TYPE_MASK | USB_RTYPE_RECIPIENT_MASK)) == (USB_RTYPE_TYPE_CLASS | USB_RTYPE_RECIPIENT_INTERFACE)) {
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switch (setup->bmRequestType & USB_RTYPE_DIR_MASK) {
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case USB_RTYPE_DIR_DEV2HOST:
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switch (setup->bRequest) {
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case HID_REQ_GetReport:
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return usb_get_report_cb(usbp);
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case HID_REQ_GetProtocol:
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if (setup->wIndex == KEYBOARD_INTERFACE) {
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usbSetupTransfer(usbp, &keyboard_protocol, sizeof(uint8_t), NULL);
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return true;
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}
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break;
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case HID_REQ_GetIdle:
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return usb_get_idle_cb(usbp);
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}
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case USB_RTYPE_DIR_HOST2DEV:
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switch (setup->bRequest) {
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case HID_REQ_SetReport:
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switch (setup->wIndex) {
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case KEYBOARD_INTERFACE:
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#if defined(SHARED_EP_ENABLE) && !defined(KEYBOARD_SHARED_EP)
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case SHARED_INTERFACE:
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#endif
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usbSetupTransfer(usbp, set_report_buf, sizeof(set_report_buf), set_led_transfer_cb);
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return true;
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}
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break;
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case HID_REQ_SetProtocol:
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if (setup->wIndex == KEYBOARD_INTERFACE) {
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keyboard_protocol = setup->wValue.word;
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}
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usbSetupTransfer(usbp, NULL, 0, NULL);
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return true;
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case HID_REQ_SetIdle:
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keyboard_idle = setup->wValue.hbyte;
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return usb_set_idle_cb(usbp);
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}
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break;
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}
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}
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/* Handle the Get_Descriptor Request for HID class, which is not handled by
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* the ChibiOS USB driver */
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if (((setup->bmRequestType & (USB_RTYPE_DIR_MASK | USB_RTYPE_RECIPIENT_MASK)) == (USB_RTYPE_DIR_DEV2HOST | USB_RTYPE_RECIPIENT_INTERFACE)) && (setup->bRequest == USB_REQ_GET_DESCRIPTOR)) {
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const USBDescriptor *descriptor = usbp->config->get_descriptor_cb(usbp, setup->wValue.lbyte, setup->wValue.hbyte, setup->wIndex);
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if (descriptor == NULL) {
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return false;
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}
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usbSetupTransfer(usbp, (uint8_t *)descriptor->ud_string, descriptor->ud_size, NULL);
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return true;
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}
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for (int i = 0; i < USB_ENDPOINT_IN_COUNT; i++) {
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if (usb_endpoints_in[i].usb_requests_cb != NULL) {
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if (usb_endpoints_in[i].usb_requests_cb(usbp)) {
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return true;
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}
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}
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}
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return false;
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}
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static __attribute__((unused)) void dummy_cb(USBDriver *usbp) {
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(void)usbp;
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}
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static const USBConfig usbcfg = {
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usb_event_cb, /* USB events callback */
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usb_get_descriptor_cb, /* Device GET_DESCRIPTOR request callback */
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usb_requests_hook_cb, /* Requests hook callback */
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#if STM32_USB_USE_OTG1 == TRUE || STM32_USB_USE_OTG2 == TRUE
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dummy_cb, /* Workaround for OTG Peripherals not servicing new interrupts
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after resuming from suspend. */
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#endif
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};
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void init_usb_driver(USBDriver *usbp) {
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for (int i = 0; i < USB_ENDPOINT_IN_COUNT; i++) {
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usb_endpoint_in_init(&usb_endpoints_in[i]);
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usb_endpoint_in_start(&usb_endpoints_in[i]);
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}
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for (int i = 0; i < USB_ENDPOINT_OUT_COUNT; i++) {
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usb_endpoint_out_init(&usb_endpoints_out[i]);
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usb_endpoint_out_start(&usb_endpoints_out[i]);
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}
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/*
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* Activates the USB driver and then the USB bus pull-up on D+.
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* Note, a delay is inserted in order to not have to disconnect the cable
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* after a reset.
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*/
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usbDisconnectBus(usbp);
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usbStop(usbp);
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wait_ms(50);
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usbStart(usbp, &usbcfg);
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usbConnectBus(usbp);
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}
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__attribute__((weak)) void restart_usb_driver(USBDriver *usbp) {
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usbDisconnectBus(usbp);
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usbStop(usbp);
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for (int i = 0; i < USB_ENDPOINT_IN_COUNT; i++) {
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usb_endpoint_in_stop(&usb_endpoints_in[i]);
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}
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for (int i = 0; i < USB_ENDPOINT_OUT_COUNT; i++) {
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usb_endpoint_out_stop(&usb_endpoints_out[i]);
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}
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wait_ms(50);
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for (int i = 0; i < USB_ENDPOINT_IN_COUNT; i++) {
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usb_endpoint_in_init(&usb_endpoints_in[i]);
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usb_endpoint_in_start(&usb_endpoints_in[i]);
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}
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for (int i = 0; i < USB_ENDPOINT_OUT_COUNT; i++) {
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usb_endpoint_out_init(&usb_endpoints_out[i]);
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usb_endpoint_out_start(&usb_endpoints_out[i]);
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}
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usbStart(usbp, &usbcfg);
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usbConnectBus(usbp);
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}
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/* ---------------------------------------------------------
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* Keyboard functions
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* ---------------------------------------------------------
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*/
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/* LED status */
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uint8_t keyboard_leds(void) {
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return keyboard_led_state;
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}
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/**
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* @brief Send a report to the host, the report is enqueued into an output
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* queue and send once the USB endpoint becomes empty.
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*
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* @param endpoint USB IN endpoint to send the report from
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* @param report pointer to the report
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* @param size size of the report
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* @return true Success
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* @return false Failure
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*/
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bool send_report(usb_endpoint_in_lut_t endpoint, void *report, size_t size) {
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return usb_endpoint_in_send(&usb_endpoints_in[endpoint], (uint8_t *)report, size, TIME_MS2I(100), false);
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}
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/**
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* @brief Send a report to the host, but delay the sending until the size of
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* endpoint report is reached or the incompletely filled buffer is flushed with
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* a call to `flush_report_buffered`. This is useful if the report is being
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* updated frequently. The complete report is then enqueued into an output
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* queue and send once the USB endpoint becomes empty.
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*
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* @param endpoint USB IN endpoint to send the report from
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* @param report pointer to the report
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* @param size size of the report
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* @return true Success
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* @return false Failure
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*/
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static bool send_report_buffered(usb_endpoint_in_lut_t endpoint, void *report, size_t size) {
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return usb_endpoint_in_send(&usb_endpoints_in[endpoint], (uint8_t *)report, size, TIME_MS2I(100), true);
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}
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/** @brief Flush all buffered reports which were enqueued with a call to
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* `send_report_buffered` that haven't been send. If necessary the buffered
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* report can be padded with zeros up to the endpoints maximum size.
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*
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* @param endpoint USB IN endpoint to flush the reports from
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* @param padded Pad the buffered report with zeros up to the endpoints maximum size
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*/
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static void flush_report_buffered(usb_endpoint_in_lut_t endpoint, bool padded) {
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usb_endpoint_in_flush(&usb_endpoints_in[endpoint], padded);
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}
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/**
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* @brief Receive a report from the host.
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*
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* @param endpoint USB OUT endpoint to receive the report from
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* @param report pointer to the report
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* @param size size of the report
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* @return true Success
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* @return false Failure
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*/
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static bool receive_report(usb_endpoint_out_lut_t endpoint, void *report, size_t size) {
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return usb_endpoint_out_receive(&usb_endpoints_out[endpoint], (uint8_t *)report, size, TIME_IMMEDIATE);
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}
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void send_keyboard(report_keyboard_t *report) {
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/* If we're in Boot Protocol, don't send any report ID or other funky fields */
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if (!keyboard_protocol) {
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send_report(USB_ENDPOINT_IN_KEYBOARD, &report->mods, 8);
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} else {
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send_report(USB_ENDPOINT_IN_KEYBOARD, report, KEYBOARD_REPORT_SIZE);
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}
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}
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void send_nkro(report_nkro_t *report) {
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#ifdef NKRO_ENABLE
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send_report(USB_ENDPOINT_IN_SHARED, report, sizeof(report_nkro_t));
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#endif
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}
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/* ---------------------------------------------------------
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* Mouse functions
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* ---------------------------------------------------------
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*/
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void send_mouse(report_mouse_t *report) {
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#ifdef MOUSE_ENABLE
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send_report(USB_ENDPOINT_IN_MOUSE, report, sizeof(report_mouse_t));
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#endif
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}
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/* ---------------------------------------------------------
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* Extrakey functions
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* ---------------------------------------------------------
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*/
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void send_extra(report_extra_t *report) {
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#ifdef EXTRAKEY_ENABLE
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send_report(USB_ENDPOINT_IN_SHARED, report, sizeof(report_extra_t));
|
|
#endif
|
|
}
|
|
|
|
void send_programmable_button(report_programmable_button_t *report) {
|
|
#ifdef PROGRAMMABLE_BUTTON_ENABLE
|
|
send_report(USB_ENDPOINT_IN_SHARED, report, sizeof(report_programmable_button_t));
|
|
#endif
|
|
}
|
|
|
|
void send_joystick(report_joystick_t *report) {
|
|
#ifdef JOYSTICK_ENABLE
|
|
send_report(USB_ENDPOINT_IN_JOYSTICK, report, sizeof(report_joystick_t));
|
|
#endif
|
|
}
|
|
|
|
void send_digitizer(report_digitizer_t *report) {
|
|
#ifdef DIGITIZER_ENABLE
|
|
send_report(USB_ENDPOINT_IN_DIGITIZER, report, sizeof(report_digitizer_t));
|
|
#endif
|
|
}
|
|
|
|
/* ---------------------------------------------------------
|
|
* Console functions
|
|
* ---------------------------------------------------------
|
|
*/
|
|
|
|
#ifdef CONSOLE_ENABLE
|
|
|
|
int8_t sendchar(uint8_t c) {
|
|
return (int8_t)send_report_buffered(USB_ENDPOINT_IN_CONSOLE, &c, sizeof(uint8_t));
|
|
}
|
|
|
|
void console_task(void) {
|
|
flush_report_buffered(USB_ENDPOINT_IN_CONSOLE, true);
|
|
}
|
|
|
|
#endif /* CONSOLE_ENABLE */
|
|
|
|
#ifdef RAW_ENABLE
|
|
void raw_hid_send(uint8_t *data, uint8_t length) {
|
|
if (length != RAW_EPSIZE) {
|
|
return;
|
|
}
|
|
send_report(USB_ENDPOINT_IN_RAW, data, length);
|
|
}
|
|
|
|
__attribute__((weak)) void raw_hid_receive(uint8_t *data, uint8_t length) {
|
|
// Users should #include "raw_hid.h" in their own code
|
|
// and implement this function there. Leave this as weak linkage
|
|
// so users can opt to not handle data coming in.
|
|
}
|
|
|
|
void raw_hid_task(void) {
|
|
uint8_t buffer[RAW_EPSIZE];
|
|
while (receive_report(USB_ENDPOINT_OUT_RAW, buffer, sizeof(buffer))) {
|
|
raw_hid_receive(buffer, sizeof(buffer));
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|
|
#ifdef MIDI_ENABLE
|
|
|
|
void send_midi_packet(MIDI_EventPacket_t *event) {
|
|
send_report(USB_ENDPOINT_IN_MIDI, (uint8_t *)event, sizeof(MIDI_EventPacket_t));
|
|
}
|
|
|
|
bool recv_midi_packet(MIDI_EventPacket_t *const event) {
|
|
return receive_report(USB_ENDPOINT_OUT_MIDI, (uint8_t *)event, sizeof(MIDI_EventPacket_t));
|
|
}
|
|
|
|
#endif
|
|
|
|
#ifdef VIRTSER_ENABLE
|
|
|
|
# include "hal_usb_cdc.h"
|
|
/**
|
|
* @brief CDC serial driver configuration structure. Set to 9600 baud, 1 stop bit, no parity, 8 data bits.
|
|
*/
|
|
static cdc_linecoding_t linecoding = {{0x00, 0x96, 0x00, 0x00}, LC_STOP_1, LC_PARITY_NONE, 8};
|
|
|
|
bool virtser_usb_request_cb(USBDriver *usbp) {
|
|
if ((usbp->setup[0] & USB_RTYPE_TYPE_MASK) == USB_RTYPE_TYPE_CLASS) { /* bmRequestType */
|
|
if (usbp->setup[4] == CCI_INTERFACE) { /* wIndex (LSB) */
|
|
switch (usbp->setup[1]) { /* bRequest */
|
|
case CDC_GET_LINE_CODING:
|
|
usbSetupTransfer(usbp, (uint8_t *)&linecoding, sizeof(linecoding), NULL);
|
|
return true;
|
|
case CDC_SET_LINE_CODING:
|
|
usbSetupTransfer(usbp, (uint8_t *)&linecoding, sizeof(linecoding), NULL);
|
|
return true;
|
|
case CDC_SET_CONTROL_LINE_STATE:
|
|
/* Nothing to do, there are no control lines.*/
|
|
usbSetupTransfer(usbp, NULL, 0, NULL);
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void virtser_init(void) {}
|
|
|
|
void virtser_send(const uint8_t byte) {
|
|
send_report_buffered(USB_ENDPOINT_IN_CDC_DATA, (void *)&byte, sizeof(byte));
|
|
}
|
|
|
|
__attribute__((weak)) void virtser_recv(uint8_t c) {
|
|
// Ignore by default
|
|
}
|
|
|
|
void virtser_task(void) {
|
|
uint8_t buffer[CDC_EPSIZE];
|
|
while (receive_report(USB_ENDPOINT_OUT_CDC_DATA, buffer, sizeof(buffer))) {
|
|
for (int i = 0; i < sizeof(buffer); i++) {
|
|
virtser_recv(buffer[i]);
|
|
}
|
|
}
|
|
|
|
flush_report_buffered(USB_ENDPOINT_IN_CDC_DATA, false);
|
|
}
|
|
|
|
#endif
|