sw/device/examples/spi_to_host/spi_to_host_smc.c

/*
 * Copyright 2023 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "hw/top_matcha/sw/autogen/top_matcha.h"
#include "sw/device/lib/arch/device.h"
#include "sw/device/lib/camera_hm01b0.h"
#include "sw/device/lib/dif/dif_cam_ctrl.h"
#include "sw/device/lib/dif/dif_isp_wrapper.h"
#include "sw/device/lib/dif/dif_rv_plic.h"
#include "sw/device/lib/dif/dif_uart.h"
#include "sw/device/lib/runtime/irq.h"
#include "sw/device/lib/runtime/print.h"
#include "sw/device/lib/testing/test_framework/check.h"
#include "sw/device/lib/testing/test_framework/ottf_test_config.h"
#include "sw/device/lib/testing/test_framework/test_util.h"

OTTF_DEFINE_TEST_CONFIG();

static dif_cam_ctrl_t cam_ctrl;
static dif_uart_t smc_uart;
static dif_isp_wrapper_t isp_wrapper;
static dif_rv_plic_t plic_smc;

void ottf_external_isr(void) {
  dif_rv_plic_irq_id_t plic_irq_id;

  CHECK_DIF_OK(dif_rv_plic_irq_claim(&plic_smc, kTopMatchaPlicTargetIbex0Smc,
                                     &plic_irq_id));
  top_matcha_plic_peripheral_smc_t peripheral_id =
      top_matcha_plic_interrupt_for_peripheral_smc[plic_irq_id];

  switch (peripheral_id) {
    case kTopMatchaPlicPeripheralCamI2c: {
      CHECK_DIF_OK(camera_hm01b0_irq_handler(plic_irq_id));
      break;
    }
    case kTopMatchaPlicPeripheralIspWrapper: {
      uint32_t mi_mis, isp_mis;
      CHECK_DIF_OK(dif_isp_wrapper_read_mi_mis(&isp_wrapper, &mi_mis));
      CHECK_DIF_OK(dif_isp_wrapper_read_isp_mis(&isp_wrapper, &isp_mis));
      CHECK_DIF_OK(dif_isp_wrapper_write_isp_icr(&isp_wrapper, isp_mis));
      CHECK_DIF_OK(dif_isp_wrapper_write_mi_icr(&isp_wrapper, mi_mis));
      CHECK_DIF_OK(dif_isp_wrapper_irq_acknowledge_all(&isp_wrapper));
      break;
    }
    default:
      LOG_FATAL("Unexpected peripheral_id!");
  }

  CHECK_DIF_OK(dif_rv_plic_irq_complete(&plic_smc, kTopMatchaPlicTargetIbex0Smc,
                                        plic_irq_id));
}
void _ottf_main(void) {
  // Config_Init
  init_uart(TOP_MATCHA_SMC_UART_BASE_ADDR, &smc_uart);
  LOG_INFO("spi_to_host_smc");
  // Initialize cam_ctrl and ISP.
  CHECK_DIF_OK(dif_cam_ctrl_init(
      mmio_region_from_addr(TOP_MATCHA_CAM_CTRL_BASE_ADDR), &cam_ctrl));
  CHECK_DIF_OK(dif_isp_wrapper_init(
      mmio_region_from_addr(TOP_MATCHA_ISP_WRAPPER_BASE_ADDR), &isp_wrapper));

  CHECK_DIF_OK(dif_rv_plic_init(
      mmio_region_from_addr(TOP_MATCHA_RV_PLIC_SMC_BASE_ADDR), &plic_smc));

  // Configure interrupts for Camera, ISP and mailbox.
  CHECK_DIF_OK(camera_hm01b0_irq_init(&plic_smc, kTopMatchaPlicTargetIbex0Smc));
  CHECK_DIF_OK(dif_rv_plic_irq_set_enabled(
      &plic_smc, kTopMatchaPlicIrqIdIspWrapperIsp, kTopMatchaPlicTargetIbex0Smc,
      kDifToggleEnabled));
  CHECK_DIF_OK(dif_rv_plic_irq_set_enabled(
      &plic_smc, kTopMatchaPlicIrqIdIspWrapperMi, kTopMatchaPlicTargetIbex0Smc,
      kDifToggleEnabled));
  CHECK_DIF_OK(dif_rv_plic_irq_set_priority(
      &plic_smc, kTopMatchaPlicIrqIdIspWrapperIsp, kDifRvPlicMaxPriority));
  CHECK_DIF_OK(dif_rv_plic_irq_set_priority(
      &plic_smc, kTopMatchaPlicIrqIdIspWrapperMi, kDifRvPlicMaxPriority));
  irq_global_ctrl(true);
  irq_external_ctrl(true);

  // Configure and enable camera.
  CHECK_DIF_OK(camera_hm01b0_init());
  CHECK_DIF_OK(camera_hm01b0_set_default_registers(
      kCameraHm01b0Resolution320x240, kCameraHm01b0FrameRate1Fps));
  CHECK_DIF_OK(dif_isp_wrapper_set_raw_320x240_byp_320x240_en(&isp_wrapper));
  CHECK_DIF_OK(dif_cam_ctrl_set_en(&cam_ctrl));

  while (true) {
    asm volatile("wfi");
  }
}