dif_i3c_autogen.c

// Copyright lowRISC contributors (OpenTitan project).
// Licensed under the Apache License, Version 2.0, see LICENSE for details.
// SPDX-License-Identifier: Apache-2.0
 
 
 
 
 
 
 
// THIS FILE HAS BEEN GENERATED, DO NOT EDIT MANUALLY. COMMAND:
// util/autogen_dif.py -i hw/ip/i3c/data/i3c.hjson -o
// bazel-out/k8-fastbuild-ST-1df456420242/bin/sw/device/lib/dif/autogen
 
 
#include <stdint.h>
 
#include "sw/device/lib/dif/dif_base.h"
#include "sw/device/lib/dif/autogen/dif_i3c_autogen.h"
 
#include "hw/top/i3c_regs.h"  // Generated.
 
 
OT_WARN_UNUSED_RESULT
dif_result_t dif_i3c_init(
  mmio_region_t base_addr,
  dif_i3c_t *i3c) {
  if (i3c == NULL) {
    return kDifBadArg;
  }
 
  i3c->dt = kDtI3cCount;
  i3c->base_addr = base_addr;
 
  return kDifOk;
}
 
OT_WARN_UNUSED_RESULT
dif_result_t dif_i3c_init_from_dt(
  dt_i3c_t dt,
  dif_i3c_t *i3c) {
  if (i3c == NULL) {
    return kDifBadArg;
  }
 
  i3c->dt = dt;
  i3c->base_addr = mmio_region_from_addr(dt_i3c_primary_reg_block(dt));
 
  return kDifOk;
}
 
dif_result_t dif_i3c_get_dt(
  const dif_i3c_t *i3c,
  dt_i3c_t *dt) {
  if ((int)i3c->dt == kDtI3cCount || dt == NULL) {
    return kDifBadArg;
  }
  *dt = i3c->dt;
  return kDifOk;
}
 
  dif_result_t dif_i3c_alert_force(
    const dif_i3c_t *i3c,
    dif_i3c_alert_t alert) {
  if (i3c == NULL) {
    return kDifBadArg;
  }
 
  bitfield_bit32_index_t alert_idx;
  switch (alert) {
    case kDifI3cAlertFatalFault:
      alert_idx = I3C_ALERT_TEST_FATAL_FAULT_BIT;
      break;
    default:
      return kDifBadArg;
  }
 
  uint32_t alert_test_reg = bitfield_bit32_write(0, alert_idx, true);
  // Keep the alert test enabled: writing 0 to the regwen bit locks the register.
  alert_test_reg = bitfield_bit32_write(
      alert_test_reg, I3C_ALERT_TEST_REGWEN_BIT, true);
  mmio_region_write32(
    i3c->base_addr,
    (ptrdiff_t)I3C_ALERT_TEST_REG_OFFSET,
    alert_test_reg);
 
 
  return kDifOk;
}
 
 
  /**
   * Get the corresponding interrupt register bit offset of the IRQ.
   */
  static bool i3c_get_irq_bit_index(
    dif_i3c_irq_t irq,
    bitfield_bit32_index_t *index_out) {
 
    switch (irq) {
      case kDtI3cIrqHci:
        *index_out = I3C_INTR_COMMON_HCI_BIT;
        break;
      case kDtI3cIrqTarg:
        *index_out = I3C_INTR_COMMON_TARG_BIT;
        break;
      default:
        return false;
    }
 
    return true;
  }
 
  static dif_irq_type_t irq_types[] = {
        kDifIrqTypeStatus,
        kDifIrqTypeStatus,
  };
 
  OT_WARN_UNUSED_RESULT
  dif_result_t dif_i3c_irq_get_type(
    const dif_i3c_t *i3c,
    dif_i3c_irq_t irq,
    dif_irq_type_t *type) {
 
    
    if (i3c == NULL ||
        type == NULL ||
        irq < kDifI3cIrqHci ||
        irq > kDifI3cIrqTarg) {
      return kDifBadArg;
    }
 
    *type = irq_types[irq];
 
    return kDifOk;
  }
 
  OT_WARN_UNUSED_RESULT
  dif_result_t dif_i3c_irq_get_state(
    const dif_i3c_t *i3c,
    dif_i3c_irq_state_snapshot_t *snapshot) {
 
    if (i3c == NULL || snapshot == NULL) {
      return kDifBadArg;
    }
 
    *snapshot = mmio_region_read32(
    i3c->base_addr,
    (ptrdiff_t)I3C_INTR_STATE_REG_OFFSET);
 
 
    return kDifOk;
  }
 
  OT_WARN_UNUSED_RESULT
  dif_result_t dif_i3c_irq_acknowledge_state(
    const dif_i3c_t *i3c,
    dif_i3c_irq_state_snapshot_t snapshot) {
    if (i3c == NULL) {
      return kDifBadArg;
    }
 
    mmio_region_write32(
    i3c->base_addr,
    (ptrdiff_t)I3C_INTR_STATE_REG_OFFSET,
    snapshot);
 
 
    return kDifOk;
  }
 
  OT_WARN_UNUSED_RESULT
  dif_result_t dif_i3c_irq_is_pending(
    const dif_i3c_t *i3c,
    dif_i3c_irq_t irq,
    bool *is_pending) {
 
    if (i3c == NULL || is_pending == NULL) {
      return kDifBadArg;
    }
 
    bitfield_bit32_index_t index;
    if (!i3c_get_irq_bit_index(irq, &index)) {
      return kDifBadArg;
    }
 
    uint32_t intr_state_reg = mmio_region_read32(
    i3c->base_addr,
    (ptrdiff_t)I3C_INTR_STATE_REG_OFFSET);
 
 
    *is_pending = bitfield_bit32_read(intr_state_reg, index);
 
    return kDifOk;
  }
 
  OT_WARN_UNUSED_RESULT
  dif_result_t dif_i3c_irq_acknowledge_all(
    const dif_i3c_t *i3c
    ) {
 
    if (i3c == NULL) {
      return kDifBadArg;
    }
 
    // Writing to the register clears the corresponding bits (Write-one clear).
    mmio_region_write32(
    i3c->base_addr,
    (ptrdiff_t)I3C_INTR_STATE_REG_OFFSET,
    UINT32_MAX);
 
 
    return kDifOk;
  }
 
  OT_WARN_UNUSED_RESULT
  dif_result_t dif_i3c_irq_acknowledge(
    const dif_i3c_t *i3c,
    dif_i3c_irq_t irq) {
 
    if (i3c == NULL) {
      return kDifBadArg;
    }
 
    bitfield_bit32_index_t index;
    if (!i3c_get_irq_bit_index(irq, &index)) {
      return kDifBadArg;
    }
 
    // Writing to the register clears the corresponding bits (Write-one clear).
    uint32_t intr_state_reg = bitfield_bit32_write(0, index, true);
    mmio_region_write32(
    i3c->base_addr,
    (ptrdiff_t)I3C_INTR_STATE_REG_OFFSET,
    intr_state_reg);
 
 
    return kDifOk;
  }
 
  OT_WARN_UNUSED_RESULT
  dif_result_t dif_i3c_irq_force(
    const dif_i3c_t *i3c,
    dif_i3c_irq_t irq,
    const bool val) {
 
    if (i3c == NULL) {
      return kDifBadArg;
    }
 
    bitfield_bit32_index_t index;
    if (!i3c_get_irq_bit_index(irq, &index)) {
      return kDifBadArg;
    }
 
    uint32_t intr_test_reg = bitfield_bit32_write(0, index, val);
    mmio_region_write32(
    i3c->base_addr,
    (ptrdiff_t)I3C_INTR_TEST_REG_OFFSET,
    intr_test_reg);
 
 
    return kDifOk;
  }
 
  OT_WARN_UNUSED_RESULT
  dif_result_t dif_i3c_irq_get_enabled(
    const dif_i3c_t *i3c,
    dif_i3c_irq_t irq,
    dif_toggle_t *state) {
 
    if (i3c == NULL || state == NULL) {
      return kDifBadArg;
    }
 
    bitfield_bit32_index_t index;
    if (!i3c_get_irq_bit_index(irq, &index)) {
      return kDifBadArg;
    }
 
    uint32_t intr_enable_reg = mmio_region_read32(
    i3c->base_addr,
    (ptrdiff_t)I3C_INTR_ENABLE_REG_OFFSET);
 
 
    bool is_enabled = bitfield_bit32_read(intr_enable_reg, index);
    *state = is_enabled ?
      kDifToggleEnabled : kDifToggleDisabled;
 
    return kDifOk;
  }
 
  OT_WARN_UNUSED_RESULT
  dif_result_t dif_i3c_irq_set_enabled(
    const dif_i3c_t *i3c,
    dif_i3c_irq_t irq,
    dif_toggle_t state) {
 
    if (i3c == NULL) {
      return kDifBadArg;
    }
 
    bitfield_bit32_index_t index;
    if (!i3c_get_irq_bit_index(irq, &index)) {
      return kDifBadArg;
    }
 
    uint32_t intr_enable_reg = mmio_region_read32(
    i3c->base_addr,
    (ptrdiff_t)I3C_INTR_ENABLE_REG_OFFSET);
 
 
    bool enable_bit = (state == kDifToggleEnabled) ? true : false;
    intr_enable_reg = bitfield_bit32_write(intr_enable_reg, index, enable_bit);
    mmio_region_write32(
    i3c->base_addr,
    (ptrdiff_t)I3C_INTR_ENABLE_REG_OFFSET,
    intr_enable_reg);
 
 
    return kDifOk;
  }
 
  OT_WARN_UNUSED_RESULT
  dif_result_t dif_i3c_irq_disable_all(
    const dif_i3c_t *i3c,
    dif_i3c_irq_enable_snapshot_t *snapshot) {
 
    if (i3c == NULL) {
      return kDifBadArg;
    }
 
    // Pass the current interrupt state to the caller, if requested.
    if (snapshot != NULL) {
      *snapshot = mmio_region_read32(
    i3c->base_addr,
    (ptrdiff_t)I3C_INTR_ENABLE_REG_OFFSET);
 
    }
 
    // Disable all interrupts.
    mmio_region_write32(
    i3c->base_addr,
    (ptrdiff_t)I3C_INTR_ENABLE_REG_OFFSET,
    0u);
 
 
    return kDifOk;
  }
 
  OT_WARN_UNUSED_RESULT
  dif_result_t dif_i3c_irq_restore_all(
    const dif_i3c_t *i3c,
    const dif_i3c_irq_enable_snapshot_t *snapshot) {
 
    if (i3c == NULL || snapshot == NULL) {
      return kDifBadArg;
    }
 
    mmio_region_write32(
    i3c->base_addr,
    (ptrdiff_t)I3C_INTR_ENABLE_REG_OFFSET,
    *snapshot);
 
 
    return kDifOk;
  }