blob: 88302fd7bb3e76a13219c7b7f8160f467c848909 [file] [log] [blame]
/*
* Copyright (c) 2014-2020, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef CSS_MHU_DOORBELL_H
#define CSS_MHU_DOORBELL_H
#include <stdint.h>
#include <lib/mmio.h>
/* MHUv2 Frame Base Mask */
#define MHU_V2_FRAME_BASE_MASK UL(~0xFFF)
/* MHUv2 Control Registers Offsets */
#define MHU_V2_MSG_NO_CAP_OFFSET UL(0xF80)
#define MHU_V2_ACCESS_REQ_OFFSET UL(0xF88)
#define MHU_V2_ACCESS_READY_OFFSET UL(0xF8C)
#define SENDER_REG_STAT(_channel) (0x20 * (_channel))
#define SENDER_REG_SET(_channel) ((0x20 * (_channel)) + 0xC)
/* Helper macro to ring doorbell */
#define MHU_RING_DOORBELL(addr, modify_mask, preserve_mask) do { \
uint32_t db = mmio_read_32(addr) & (preserve_mask); \
mmio_write_32(addr, db | (modify_mask)); \
} while (0)
#define MHU_V2_ACCESS_REQUEST(addr) \
mmio_write_32((addr) + MHU_V2_ACCESS_REQ_OFFSET, 0x1)
#define MHU_V2_CLEAR_REQUEST(addr) \
mmio_write_32((addr) + MHU_V2_ACCESS_REQ_OFFSET, 0x0)
#define MHU_V2_IS_ACCESS_READY(addr) \
(mmio_read_32((addr) + MHU_V2_ACCESS_READY_OFFSET) & 0x1)
struct scmi_channel_plat_info;
void mhu_ring_doorbell(struct scmi_channel_plat_info *plat_info);
void mhuv2_ring_doorbell(struct scmi_channel_plat_info *plat_info);
#endif /* CSS_MHU_DOORBELL_H */