rv_timer.h

Go to the documentation of this file.

// Copyright lowRISC contributors (OpenTitan project).
// Licensed under the Apache License, Version 2.0, see LICENSE for details.
// SPDX-License-Identifier: Apache-2.0
//
// Device table API auto-generated by `dtgen`
 
#ifndef OPENTITAN_DT_RV_TIMER_H_
#define OPENTITAN_DT_RV_TIMER_H_
 
#ifdef __cplusplus
extern "C" {
#endif  // __cplusplus
 
/**
 * @file
 * @brief Device Tables (DT) for IP rv_timer and top darjeeling.
 *
 * This file contains the type definitions and global functions of the rv_timer.
 */
 
#include "hw/top/dt/api.h"
#include <stdint.h>
 
 
 
/**
 * List of instances.
 */
typedef enum dt_rv_timer {
  kDtRvTimerFirst = 0, /**< First instance */
  kDtRvTimer = 0, /**< rv_timer */
} dt_rv_timer_t;
 
enum {
  kDtRvTimerCount = 1, /**< Number of instances */
};
 
 
/**
 * List of register blocks.
 *
 * Register blocks are guaranteed to start at 0 and to be consecutively numbered.
 */
typedef enum dt_rv_timer_reg_block {
  kDtRvTimerRegBlockCore = 0, /**<  */
} dt_rv_timer_reg_block_t;
 
enum {
  kDtRvTimerRegBlockCount = 1, /**< Number of register blocks */
};
 
 
/** Primary register block (associated with the "primary" set of registers that control the IP). */
static const dt_rv_timer_reg_block_t kDtRvTimerRegBlockPrimary = kDtRvTimerRegBlockCore;
 
/**
 * List of IRQs.
 *
 * IRQs are guaranteed to be numbered consecutively from 0.
 */
typedef enum dt_rv_timer_irq {
  kDtRvTimerIrqTimerExpiredHart0Timer0 = 0, /**< raised if hart0's timer0 expired (mtimecmp >= mtime) */
} dt_rv_timer_irq_t;
 
enum {
  kDtRvTimerIrqCount = 1, /**< Number of IRQs */
};
 
 
/**
 * List of Alerts.
 *
 * Alerts are guaranteed to be numbered consecutively from 0.
 */
typedef enum dt_rv_timer_alert {
  kDtRvTimerAlertFatalFault = 0, /**< This fatal alert is triggered when a fatal TL-UL bus integrity fault is detected inside the RV_TIMER unit. */
} dt_rv_timer_alert_t;
 
enum {
  kDtRvTimerAlertCount = 1, /**< Number of Alerts */
};
 
 
/**
 * List of clock ports.
 *
 * Clock ports are guaranteed to be numbered consecutively from 0.
 */
typedef enum dt_rv_timer_clock {
  kDtRvTimerClockClk = 0, /**< Clock port clk_i */
} dt_rv_timer_clock_t;
 
enum {
  kDtRvTimerClockCount = 1, /**< Number of clock ports */
};
 
 
/**
 * List of reset ports.
 *
 * Reset ports are guaranteed to be numbered consecutively from 0.
 */
typedef enum dt_rv_timer_reset {
  kDtRvTimerResetRst = 0, /**< Reset port rst_ni */
} dt_rv_timer_reset_t;
 
enum {
  kDtRvTimerResetCount = 1, /**< Number of reset ports */
};
 
 
/**
 * List of supported hardware features.
 */
#define OPENTITAN_RV_TIMER_HAS_RISCV_CSRS_INTEGRATION 1
#define OPENTITAN_RV_TIMER_HAS_ENABLE 1
#define OPENTITAN_RV_TIMER_HAS_DISABLE 1
#define OPENTITAN_RV_TIMER_HAS_INTERRUPT 1
#define OPENTITAN_RV_TIMER_HAS_CONFIG 1
#define OPENTITAN_RV_TIMER_HAS_COUNTER 1
#define OPENTITAN_RV_TIMER_HAS_COMPARE 1
 
 
 
/**
 * Get the rv_timer instance from an instance ID
 *
 * For example, `dt_uart_from_instance_id(kDtInstanceIdUart3) == kDtUart3`.
 *
 * @param inst_id Instance ID.
 * @return A rv_timer instance.
 *
 * **Note:** This function only makes sense if the instance ID has device type rv_timer,
 * otherwise the returned value is unspecified.
 */
dt_rv_timer_t dt_rv_timer_from_instance_id(dt_instance_id_t inst_id);
 
/**
 * Get the instance ID of an instance.
 *
 * @param dt Instance of rv_timer.
 * @return The instance ID of that instance.
 */
dt_instance_id_t dt_rv_timer_instance_id(dt_rv_timer_t dt);
 
/**
 * Get the register base address of an instance.
 *
 * @param dt Instance of rv_timer.
 * @param reg_block The register block requested.
 * @return The register base address of the requested block.
 */
uint32_t dt_rv_timer_reg_block(
    dt_rv_timer_t dt,
    dt_rv_timer_reg_block_t reg_block);
 
/**
 * Get the primary register base address of an instance.
 *
 * This is just a convenience function, equivalent to
 * `dt_rv_timer_reg_block(dt, kDtRvTimerRegBlockCore)`
 *
 * @param dt Instance of rv_timer.
 * @return The register base address of the primary register block.
 */
static inline uint32_t dt_rv_timer_primary_reg_block(
    dt_rv_timer_t dt) {
  return dt_rv_timer_reg_block(dt, kDtRvTimerRegBlockCore);
}
 
/**
 * Get the PLIC ID of a rv_timer IRQ for a given instance.
 *
 * If the instance is not connected to the PLIC, this function
 * will return `kDtPlicIrqIdNone`.
 *
 * @param dt Instance of rv_timer.
 * @param irq A rv_timer IRQ.
 * @return The PLIC ID of the IRQ of this instance.
 */
dt_plic_irq_id_t dt_rv_timer_irq_to_plic_id(
    dt_rv_timer_t dt,
    dt_rv_timer_irq_t irq);
 
/**
 * Convert a global IRQ ID to a local rv_timer IRQ type.
 *
 * @param dt Instance of rv_timer.
 * @param irq A PLIC ID that belongs to this instance.
 * @return The rv_timer IRQ, or `kDtRvTimerIrqCount`.
 *
 * **Note:** This function assumes that the PLIC ID belongs to the instance
 * of rv_timer passed in parameter. In other words, it must be the case that
 * `dt_rv_timer_instance_id(dt) == dt_plic_id_to_instance_id(irq)`. Otherwise, this function
 * will return `kDtRvTimerIrqCount`.
 */
dt_rv_timer_irq_t dt_rv_timer_irq_from_plic_id(
    dt_rv_timer_t dt,
    dt_plic_irq_id_t irq);
 
 
/**
 * Get the alert ID of a rv_timer alert for a given instance.
 *
 * **Note:** This function only makes sense if the instance is connected to the Alert Handler. For any
 * instances where the instance is not connected, the return value is unspecified.
 *
 * @param dt Instance of rv_timer.
 * @param alert A rv_timer alert.
 * @return The Alert Handler alert ID of the alert of this instance.
 */
dt_alert_id_t dt_rv_timer_alert_to_alert_id(
    dt_rv_timer_t dt,
    dt_rv_timer_alert_t alert);
 
/**
 * Convert a global alert ID to a local rv_timer alert type.
 *
 * @param dt Instance of rv_timer.
 * @param alert A global alert ID that belongs to this instance.
 * @return The rv_timer alert, or `kDtRvTimerAlertCount`.
 *
 * **Note:** This function assumes that the global alert ID belongs to the
 * instance of rv_timer passed in parameter. In other words, it must be the case
 * that `dt_rv_timer_instance_id(dt) == dt_alert_id_to_instance_id(alert)`. Otherwise,
 * this function will return `kDtRvTimerAlertCount`.
 */
dt_rv_timer_alert_t dt_rv_timer_alert_from_alert_id(
    dt_rv_timer_t dt,
    dt_alert_id_t alert);
 
 
 
/**
 * Get the clock signal connected to a clock port of an instance.
 *
 * @param dt Instance of rv_timer.
 * @param clk Clock port.
 * @return Clock signal.
 */
dt_clock_t dt_rv_timer_clock(
    dt_rv_timer_t dt,
    dt_rv_timer_clock_t clk);
 
/**
 * Get the reset signal connected to a reset port of an instance.
 *
 * @param dt Instance of rv_timer.
 * @param rst Reset port.
 * @return Reset signal.
 */
dt_reset_t dt_rv_timer_reset(
    dt_rv_timer_t dt,
    dt_rv_timer_reset_t rst);
 
 
 
#ifdef __cplusplus
}  // extern "C"
#endif  // __cplusplus
 
#endif  // OPENTITAN_DT_RV_TIMER_H_