/**************************************************************************/
/*!
    @file     test_ehci_pipe.c
    @author   hathach (tinyusb.org)

    @section LICENSE

    Software License Agreement (BSD License)

    Copyright (c) 2013, hathach (tinyusb.org)
    All rights reserved.

    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:
    1. Redistributions of source code must retain the above copyright
    notice, this list of conditions and the following disclaimer.
    2. Redistributions in binary form must reproduce the above copyright
    notice, this list of conditions and the following disclaimer in the
    documentation and/or other materials provided with the distribution.
    3. Neither the name of the copyright holders nor the
    names of its contributors may be used to endorse or promote products
    derived from this software without specific prior written permission.

    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
    DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
    DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
    INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
    LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION HOWEVER CAUSED AND
    ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
    INCLUDING NEGLIGENCE OR OTHERWISE ARISING IN ANY WAY OUT OF THE USE OF THIS
    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    This file is part of the tinyusb stack.
*/
/**************************************************************************/

#include "unity.h"
#include "tusb_option.h"
#include "errors.h"
#include "binary.h"

#include "hal.h"
#include "mock_osal.h"
#include "hcd.h"
#include "mock_usbh_hcd.h"
#include "ehci.h"
#include "ehci_controller.h"

usbh_device_info_t usbh_devices[TUSB_CFG_HOST_DEVICE_MAX+1];

uint8_t const hub_addr = 2;
uint8_t const hub_port = 2;
uint8_t dev_addr;
uint8_t hostid;

ehci_qhd_t *period_head_arr;

ehci_qhd_t *p_int_qhd;
pipe_handle_t pipe_hdl;

uint8_t count_set_bits(uint8_t x);

//--------------------------------------------------------------------+
// Setup/Teardown + helper declare
//--------------------------------------------------------------------+
void setUp(void)
{
  memclr_(usbh_devices, sizeof(usbh_device_info_t)*(TUSB_CFG_HOST_DEVICE_MAX+1));

  hcd_init();

  dev_addr = 1;

  hostid = RANDOM(CONTROLLER_HOST_NUMBER) + TEST_CONTROLLER_HOST_START_INDEX;
  for (uint8_t i=0; i<TUSB_CFG_HOST_DEVICE_MAX+1; i++)
  {
    usbh_devices[i].core_id  = hostid;
    usbh_devices[i].hub_addr = hub_addr;
    usbh_devices[i].hub_port = hub_port;
    usbh_devices[i].speed    = TUSB_SPEED_HIGH;
  }

  period_head_arr = get_period_head( hostid, 1 );
  p_int_qhd = NULL;
  memclr_(&pipe_hdl, sizeof(pipe_handle_t));
}

void tearDown(void)
{
}

void verify_open_qhd(ehci_qhd_t *p_qhd, uint8_t endpoint_addr, uint16_t max_packet_size)
{
  TEST_ASSERT_EQUAL(dev_addr, p_qhd->device_address);
  TEST_ASSERT_FALSE(p_qhd->non_hs_period_inactive_next_xact);
  TEST_ASSERT_EQUAL(endpoint_addr & 0x0F, p_qhd->endpoint_number);
  TEST_ASSERT_EQUAL(usbh_devices[dev_addr].speed, p_qhd->endpoint_speed);
  TEST_ASSERT_EQUAL(max_packet_size, p_qhd->max_package_size);
  TEST_ASSERT_EQUAL(0, p_qhd->nak_count_reload); // TDD NAK Reload disable

  TEST_ASSERT_EQUAL(hub_addr, p_qhd->hub_address);
  TEST_ASSERT_EQUAL(hub_port, p_qhd->hub_port);
  TEST_ASSERT_EQUAL(1, p_qhd->mult); // TDD operation model for mult

  TEST_ASSERT_FALSE(p_qhd->qtd_overlay.halted);
  TEST_ASSERT(p_qhd->qtd_overlay.next.terminate);
  TEST_ASSERT(p_qhd->qtd_overlay.alternate.terminate);

  //------------- HCD -------------//
  TEST_ASSERT(p_qhd->used);
  TEST_ASSERT_FALSE(p_qhd->is_removing);
  TEST_ASSERT_NULL(p_qhd->p_qtd_list_head);
  TEST_ASSERT_NULL(p_qhd->p_qtd_list_tail);
}


//--------------------------------------------------------------------+
// PIPE OPEN
//--------------------------------------------------------------------+
tusb_descriptor_endpoint_t const desc_ept_interrupt_out =
{
    .bLength          = sizeof(tusb_descriptor_endpoint_t),
    .bDescriptorType  = TUSB_DESC_ENDPOINT,
    .bEndpointAddress = 0x02,
    .bmAttributes     = { .xfer = TUSB_XFER_INTERRUPT },
    .wMaxPacketSize   = 16,
    .bInterval        = 4
};
void verify_int_qhd(ehci_qhd_t *p_qhd, tusb_descriptor_endpoint_t const * desc_endpoint, uint8_t class_code)
{
  verify_open_qhd(p_qhd, desc_endpoint->bEndpointAddress, desc_endpoint->wMaxPacketSize.size);

  TEST_ASSERT_FALSE(p_qhd->head_list_flag);
  TEST_ASSERT_FALSE(p_qhd->data_toggle_control);
  TEST_ASSERT_FALSE(p_qhd->non_hs_control_endpoint);

  TEST_ASSERT_EQUAL(desc_endpoint->bEndpointAddress & 0x80 ? EHCI_PID_IN : EHCI_PID_OUT, p_qhd->pid_non_control);
}

void check_int_endpoint_link(ehci_qhd_t *p_prev, ehci_qhd_t *p_qhd)
{
  //------------- period list check -------------//
  TEST_ASSERT_EQUAL_HEX((uint32_t) p_qhd, align32(p_prev->next.address));
  TEST_ASSERT_FALSE(p_prev->next.terminate);
  TEST_ASSERT_EQUAL(EHCI_QUEUE_ELEMENT_QHD, p_prev->next.type);
}

void test_open_interrupt_qhd_hs(void)
{
  //------------- Code Under TEST -------------//
  pipe_hdl = hcd_pipe_open(dev_addr, &desc_ept_interrupt_out, TUSB_CLASS_HID);

  TEST_ASSERT_EQUAL(dev_addr, pipe_hdl.dev_addr);
  TEST_ASSERT_EQUAL(TUSB_XFER_INTERRUPT, pipe_hdl.xfer_type);

  p_int_qhd = &ehci_data.device[ pipe_hdl.dev_addr-1].qhd[ pipe_hdl.index ];

  verify_int_qhd(p_int_qhd, &desc_ept_interrupt_out, TUSB_CLASS_HID);

  TEST_ASSERT_EQUAL(0, p_int_qhd->non_hs_interrupt_cmask);
}

void test_open_interrupt_hs_interval_1(void)
{
  tusb_descriptor_endpoint_t int_edp_interval = desc_ept_interrupt_out;
  int_edp_interval.bInterval = 1;

  //------------- Code Under TEST -------------//
  pipe_hdl = hcd_pipe_open(dev_addr, &int_edp_interval, TUSB_CLASS_HID);
  p_int_qhd = &ehci_data.device[ pipe_hdl.dev_addr-1].qhd[ pipe_hdl.index ];

  TEST_ASSERT_EQUAL(0              , p_int_qhd->interval_ms);
  TEST_ASSERT_EQUAL(BIN8(11111111) , p_int_qhd->interrupt_smask);

  check_int_endpoint_link(period_head_arr, p_int_qhd);
}

void test_open_interrupt_hs_interval_2(void)
{
  tusb_descriptor_endpoint_t int_edp_interval = desc_ept_interrupt_out;
  int_edp_interval.bInterval = 2;

  //------------- Code Under TEST -------------//
  pipe_hdl = hcd_pipe_open(dev_addr, &int_edp_interval, TUSB_CLASS_HID);
  p_int_qhd = &ehci_data.device[ pipe_hdl.dev_addr-1].qhd[ pipe_hdl.index ];

  TEST_ASSERT_EQUAL(0 , p_int_qhd->interval_ms);
  TEST_ASSERT_EQUAL(4 , count_set_bits(p_int_qhd->interrupt_smask)); // either 10101010 or 01010101
  check_int_endpoint_link(period_head_arr, p_int_qhd);
}

void test_open_interrupt_hs_interval_3(void)
{
  tusb_descriptor_endpoint_t int_edp_interval = desc_ept_interrupt_out;
  int_edp_interval.bInterval = 3;

  //------------- Code Under TEST -------------//
  pipe_hdl = hcd_pipe_open(dev_addr, &int_edp_interval, TUSB_CLASS_HID);
  p_int_qhd = &ehci_data.device[ pipe_hdl.dev_addr-1].qhd[ pipe_hdl.index ];

  TEST_ASSERT_EQUAL(0, p_int_qhd->interval_ms);
  TEST_ASSERT_EQUAL(2, count_set_bits(p_int_qhd->interrupt_smask) );
  check_int_endpoint_link(period_head_arr, p_int_qhd);
}

void test_open_interrupt_hs_interval_4(void)
{
  tusb_descriptor_endpoint_t int_edp_interval = desc_ept_interrupt_out;
  int_edp_interval.bInterval = 4;

  //------------- Code Under TEST -------------//
  pipe_hdl = hcd_pipe_open(dev_addr, &int_edp_interval, TUSB_CLASS_HID);
  p_int_qhd = &ehci_data.device[ pipe_hdl.dev_addr-1].qhd[ pipe_hdl.index ];

  TEST_ASSERT_EQUAL(1, p_int_qhd->interval_ms);
  TEST_ASSERT_EQUAL(1, count_set_bits(p_int_qhd->interrupt_smask) );
  check_int_endpoint_link(period_head_arr, p_int_qhd);
}

void test_open_interrupt_hs_interval_5(void)
{
  tusb_descriptor_endpoint_t int_edp_interval = desc_ept_interrupt_out;
  int_edp_interval.bInterval = 5;

  //------------- Code Under TEST -------------//
  pipe_hdl = hcd_pipe_open(dev_addr, &int_edp_interval, TUSB_CLASS_HID);
  p_int_qhd = &ehci_data.device[ pipe_hdl.dev_addr-1].qhd[ pipe_hdl.index ];

  TEST_ASSERT_EQUAL(2, p_int_qhd->interval_ms);
  TEST_ASSERT_EQUAL(1, count_set_bits(p_int_qhd->interrupt_smask) );
  check_int_endpoint_link( get_period_head(hostid, 2), p_int_qhd );
}

void test_open_interrupt_hs_interval_6(void)
{
  tusb_descriptor_endpoint_t int_edp_interval = desc_ept_interrupt_out;
  int_edp_interval.bInterval = 6;

  //------------- Code Under TEST -------------//
  pipe_hdl = hcd_pipe_open(dev_addr, &int_edp_interval, TUSB_CLASS_HID);
  p_int_qhd = &ehci_data.device[ pipe_hdl.dev_addr-1].qhd[ pipe_hdl.index ];

  TEST_ASSERT_EQUAL(4, p_int_qhd->interval_ms);
  TEST_ASSERT_EQUAL(1, count_set_bits(p_int_qhd->interrupt_smask) );
  check_int_endpoint_link( get_period_head(hostid, 4), p_int_qhd);
}

void test_open_interrupt_hs_interval_7(void)
{
  tusb_descriptor_endpoint_t int_edp_interval = desc_ept_interrupt_out;
  int_edp_interval.bInterval = 7;

  //------------- Code Under TEST -------------//
  pipe_hdl = hcd_pipe_open(dev_addr, &int_edp_interval, TUSB_CLASS_HID);
  p_int_qhd = &ehci_data.device[ pipe_hdl.dev_addr-1].qhd[ pipe_hdl.index ];

  TEST_ASSERT_EQUAL(8, p_int_qhd->interval_ms);
  TEST_ASSERT_EQUAL(1, count_set_bits(p_int_qhd->interrupt_smask) );
  check_int_endpoint_link( get_period_head(hostid, 8), p_int_qhd);
}

void test_open_interrupt_hs_interval_8(void)
{
  tusb_descriptor_endpoint_t int_edp_interval = desc_ept_interrupt_out;
  int_edp_interval.bInterval = 16;

  //------------- Code Under TEST -------------//
  pipe_hdl = hcd_pipe_open(dev_addr, &int_edp_interval, TUSB_CLASS_HID);
  p_int_qhd = &ehci_data.device[ pipe_hdl.dev_addr-1].qhd[ pipe_hdl.index ];

  TEST_ASSERT_EQUAL(255, p_int_qhd->interval_ms);
  TEST_ASSERT_EQUAL(1, count_set_bits(p_int_qhd->interrupt_smask) );
  check_int_endpoint_link( get_period_head(hostid, 255), p_int_qhd);
  check_int_endpoint_link( get_period_head(hostid, 8) , p_int_qhd);
}

void test_open_interrupt_qhd_non_hs(void)
{
  usbh_devices[dev_addr].speed = TUSB_SPEED_FULL;

  //------------- Code Under TEST -------------//
  pipe_hdl = hcd_pipe_open(dev_addr, &desc_ept_interrupt_out, TUSB_CLASS_HID);

  TEST_ASSERT_EQUAL(dev_addr, pipe_hdl.dev_addr);
  TEST_ASSERT_EQUAL(TUSB_XFER_INTERRUPT, pipe_hdl.xfer_type);

  p_int_qhd = &ehci_data.device[ pipe_hdl.dev_addr-1].qhd[ pipe_hdl.index ];

  verify_int_qhd(p_int_qhd, &desc_ept_interrupt_out, TUSB_CLASS_HID);

  TEST_ASSERT_EQUAL(desc_ept_interrupt_out.bInterval, p_int_qhd->interval_ms);
  TEST_ASSERT_EQUAL(1, p_int_qhd->interrupt_smask);
  TEST_ASSERT_EQUAL(0x1c, p_int_qhd->non_hs_interrupt_cmask);
}

void test_open_interrupt_qhd_non_hs_9(void)
{
  tusb_descriptor_endpoint_t int_edp_interval = desc_ept_interrupt_out;
  int_edp_interval.bInterval = 32;

  usbh_devices[dev_addr].speed = TUSB_SPEED_FULL;

  //------------- Code Under TEST -------------//
  pipe_hdl = hcd_pipe_open(dev_addr, &int_edp_interval, TUSB_CLASS_HID);
  p_int_qhd = &ehci_data.device[ pipe_hdl.dev_addr-1].qhd[ pipe_hdl.index ];

  TEST_ASSERT_EQUAL(int_edp_interval.bInterval, p_int_qhd->interval_ms);
  check_int_endpoint_link( get_period_head(hostid, 32), p_int_qhd);
  check_int_endpoint_link( get_period_head(hostid, 8) , p_int_qhd);
}

//--------------------------------------------------------------------+
// PIPE CLOSE
//--------------------------------------------------------------------+
void test_interrupt_close(void)
{
  pipe_hdl = hcd_pipe_open(dev_addr, &desc_ept_interrupt_out, TUSB_CLASS_HID);
  p_int_qhd = qhd_get_from_pipe_handle(pipe_hdl);

  //------------- Code Under TEST -------------//
  hcd_pipe_close(pipe_hdl);

  TEST_ASSERT(p_int_qhd->is_removing);
  TEST_ASSERT( align32(period_head_arr->next.address) != (uint32_t) p_int_qhd );
  TEST_ASSERT_EQUAL_HEX( (uint32_t) period_head_arr, align32(p_int_qhd->next.address ) );
  TEST_ASSERT_EQUAL(EHCI_QUEUE_ELEMENT_QHD, p_int_qhd->next.type);
}

void test_interrupt_256ms_close(void)
{
  tusb_descriptor_endpoint_t int_edp_interval = desc_ept_interrupt_out;
  int_edp_interval.bInterval = 9;

  pipe_hdl = hcd_pipe_open(dev_addr, &int_edp_interval, TUSB_CLASS_HID);
  p_int_qhd = qhd_get_from_pipe_handle(pipe_hdl);

  //------------- Code Under TEST -------------//
  hcd_pipe_close(pipe_hdl);

  TEST_ASSERT(p_int_qhd->is_removing);
  TEST_ASSERT( align32(get_period_head(hostid, 8)->address) != (uint32_t) p_int_qhd );
  TEST_ASSERT_EQUAL_HEX( (uint32_t) get_period_head(hostid, 8), align32(p_int_qhd->next.address ) );
  TEST_ASSERT_EQUAL(EHCI_QUEUE_ELEMENT_QHD, p_int_qhd->next.type);
}

uint8_t count_set_bits(uint8_t x)
{
  uint8_t result = 0;
  for (uint8_t i=0; i<8; i++)
  {
    if ( x & BIT_(i) )
    {
      ++result;
    }
  }

  return result;
}