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+/*
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+ * The MIT License (MIT)
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+ *
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+ * Copyright (c) 2021 Ha Thach (tinyusb.org)
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+ *
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+ * Permission is hereby granted, free of charge, to any person obtaining a copy
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+ * of this software and associated documentation files (the "Software"), to deal
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+ * in the Software without restriction, including without limitation the rights
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+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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+ * copies of the Software, and to permit persons to whom the Software is
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+ * furnished to do so, subject to the following conditions:
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+ *
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+ * The above copyright notice and this permission notice shall be included in
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+ * all copies or substantial portions of the Software.
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+ *
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+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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+ * THE SOFTWARE.
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+ *
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+ * This file is part of the TinyUSB stack.
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+ */
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+
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+#include "tusb_option.h"
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+
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+#if CFG_TUH_ENABLED && (CFG_TUSB_MCU == OPT_MCU_RP2040) && CFG_TUH_RPI_PIO
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+
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+#include "pico.h"
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+#include "hardware/pio.h"
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+#include "pio_usb.h"
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+
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+//--------------------------------------------------------------------+
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+// INCLUDE
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+//--------------------------------------------------------------------+
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+#include "osal/osal.h"
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+
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+#include "host/hcd.h"
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+#include "host/usbh.h"
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+
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+#define RHPORT_OFFSET 1
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+#define RHPORT_PIO(_x) ((_x)-RHPORT_OFFSET)
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+
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+
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+static usb_device_t *_test_usb_device = NULL;
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+static pio_usb_configuration_t pio_host_config = PIO_USB_DEFAULT_CONFIG;
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+
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+extern root_port_t root_port[PIO_USB_ROOT_PORT_CNT];
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+extern usb_device_t usb_device[PIO_USB_DEVICE_CNT];
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+extern pio_port_t pio_port[1];
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+extern root_port_t root_port[PIO_USB_ROOT_PORT_CNT];
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+extern endpoint_t ep_pool[PIO_USB_EP_POOL_CNT];
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+
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+
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+extern port_pin_status_t get_port_pin_status( root_port_t *port);
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+extern void configure_fullspeed_host( pio_port_t *pp, const pio_usb_configuration_t *c, root_port_t *port);
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+extern void configure_lowspeed_host( pio_port_t *pp, const pio_usb_configuration_t *c, root_port_t *port);
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+
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+extern void control_setup_transfer( const pio_port_t *pp, uint8_t device_address, uint8_t *tx_data_address, uint8_t tx_data_len);
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+extern int control_in_protocol( usb_device_t *device, uint8_t *tx_data, uint16_t tx_length, uint8_t *rx_buffer, uint16_t request_length);
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+extern int control_out_protocol( usb_device_t *device, uint8_t *setup_data, uint16_t setup_length, uint8_t *out_data, uint16_t out_length);
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+
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+extern void update_packet_crc16(usb_setup_packet_t * packet);
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+
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+//--------------------------------------------------------------------+
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+// HCD API
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+//--------------------------------------------------------------------+
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+bool hcd_init(uint8_t rhport)
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+{
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+ // To run USB SOF interrupt in core1, create alarm pool in core1.
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+ pio_host_config.alarm_pool = (void*)alarm_pool_create(2, 1);
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+ _test_usb_device = pio_usb_host_init(&pio_host_config);
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+
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+ return true;
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+}
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+
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+void hcd_port_reset(uint8_t rhport)
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+{
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+ rhport = RHPORT_PIO(rhport);
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+
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+ pio_port_t *pp = &pio_port[0];
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+ root_port_t *root = &root_port[rhport];
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+
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+ pio_sm_set_pins_with_mask(pp->pio_usb_tx, pp->sm_tx, (0b00 << root->pin_dp),
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+ (0b11u << root->pin_dp));
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+ pio_sm_set_pindirs_with_mask(pp->pio_usb_tx, pp->sm_tx, (0b11u << root->pin_dp),
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+ (0b11u << root->pin_dp));
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+}
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+
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+void hcd_port_reset_end(uint8_t rhport)
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+{
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+ rhport = RHPORT_PIO(rhport);
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+
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+ pio_port_t *pp = &pio_port[0];
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+ root_port_t *root = &root_port[rhport];
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+
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+ pio_sm_set_pindirs_with_mask(pp->pio_usb_tx, pp->sm_tx, (0b00u << root->pin_dp),
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+ (0b11u << root->pin_dp));
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+
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+ busy_wait_us(100);
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+
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+ // TODO slow speed
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+ bool fullspeed_flag = true;
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+
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+ if (fullspeed_flag && get_port_pin_status(root) == PORT_PIN_FS_IDLE) {
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+ root->root_device = &usb_device[0];
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+ if (!root->root_device->connected) {
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+ configure_fullspeed_host(pp, &pio_host_config, root);
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+ root->root_device->is_fullspeed = true;
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+ root->root_device->is_root = true;
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+ root->root_device->connected = true;
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+ root->root_device->root = root;
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+ root->root_device->event = EVENT_CONNECT;
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+ }
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+ } else if (!fullspeed_flag && get_port_pin_status(root) == PORT_PIN_LS_IDLE) {
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+ root->root_device = &usb_device[0];
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+ if (!root->root_device->connected) {
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+ configure_lowspeed_host(pp, &pio_host_config, root);
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+ root->root_device->is_fullspeed = false;
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+ root->root_device->is_root = true;
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+ root->root_device->connected = true;
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+ root->root_device->root = root;
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+ root->root_device->event = EVENT_CONNECT;
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+ }
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+ }
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+}
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+
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+bool hcd_port_connect_status(uint8_t rhport)
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+{
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+ root_port_t* port = &root_port[0];
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+ bool dp = gpio_get(port->pin_dp);
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+ bool dm = gpio_get(port->pin_dm);
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+ return dp || dm;
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+}
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+
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+tusb_speed_t hcd_port_speed_get(uint8_t rhport)
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+{
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+ // TODO determine link speed
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+ return TUSB_SPEED_FULL;
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+}
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+
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+// Close all opened endpoint belong to this device
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+void hcd_device_close(uint8_t rhport, uint8_t dev_addr)
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+{
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+}
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+
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+uint32_t hcd_frame_number(uint8_t rhport)
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+{
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+ return 0;
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+}
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+
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+void hcd_int_enable(uint8_t rhport)
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+{
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+}
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+
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+void hcd_int_disable(uint8_t rhport)
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+{
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+}
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+
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+//--------------------------------------------------------------------+
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+// Endpoint API
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+//--------------------------------------------------------------------+
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+
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+bool hcd_edpt_open(uint8_t rhport, uint8_t dev_addr, tusb_desc_endpoint_t const * ep_desc)
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+{
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+ rhport = RHPORT_PIO(rhport);
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+
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+ usb_device[0].event = EVENT_NONE;
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+ usb_device[0].address = dev_addr;
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+
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+ return true;
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+}
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+
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+bool hcd_edpt_xfer(uint8_t rhport, uint8_t dev_addr, uint8_t ep_addr, uint8_t * buffer, uint16_t buflen)
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+{
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+ (void) rhport;
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+
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+ return true;
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+}
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+
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+bool hcd_setup_send(uint8_t rhport, uint8_t dev_addr, uint8_t const setup_packet[8])
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+{
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+ (void) rhport;
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+ return false;
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+}
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+
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+bool hcd_edpt_control_xfer(uint8_t rhport, uint8_t dev_addr, uint8_t const setup_packet[8], uint8_t* data)
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+{
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+ int ret;
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+ rhport = RHPORT_PIO(rhport);
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+
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+ uint16_t const len = ((tusb_control_request_t const*) setup_packet)->wLength;
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+
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+ usb_setup_packet_t pio_setup = { USB_SYNC, USB_PID_DATA0 };
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+ memcpy(&pio_setup.request_type, setup_packet, 8);
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+ update_packet_crc16(&pio_setup);
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+
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+ if (setup_packet[0] & TUSB_DIR_IN_MASK)
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+ {
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+ ret = control_in_protocol(&usb_device[0], (uint8_t*) &pio_setup, sizeof(pio_setup), data, len);
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+ }else
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+ {
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+ ret = control_out_protocol(&usb_device[0], (uint8_t*) &pio_setup, sizeof(pio_setup), data, len);
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+ }
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+
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+ // TODO current pio is blocking
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+ hcd_event_xfer_complete(dev_addr, 0, 0, ret ? XFER_RESULT_FAILED : XFER_RESULT_SUCCESS, false);
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+
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+ return ret == 0;
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+}
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+
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+
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+//bool hcd_edpt_busy(uint8_t dev_addr, uint8_t ep_addr)
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+//{
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+// // EPX is shared, so multiple device addresses and endpoint addresses share that
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+// // so if any transfer is active on epx, we are busy. Interrupt endpoints have their own
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+// // EPX so ep->active will only be busy if there is a pending transfer on that interrupt endpoint
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+// // on that device
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+// pico_trace("hcd_edpt_busy dev addr %d ep_addr 0x%x\n", dev_addr, ep_addr);
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+// struct hw_endpoint *ep = get_dev_ep(dev_addr, ep_addr);
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+// assert(ep);
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+// bool busy = ep->active;
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+// pico_trace("busy == %d\n", busy);
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+// return busy;
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+//}
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+
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+bool hcd_edpt_clear_stall(uint8_t dev_addr, uint8_t ep_addr)
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+{
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+ (void) dev_addr;
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+ (void) ep_addr;
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+
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+ return true;
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+}
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+
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+#endif
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hathach