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4f65c0beaa
Enables the doorbell channels in MHUv3 for TC3. Change-Id: Ib4f47df3e54f9182939ea6c1d8bc1a66a3c03094 Signed-off-by: Boyan Karatotev <boyan.karatotev@arm.com> Signed-off-by: Leo Yan <leo.yan@arm.com>
48 lines
1.4 KiB
C
48 lines
1.4 KiB
C
/*
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* Copyright (c) 2014-2024, Arm Limited and Contributors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef CSS_MHU_DOORBELL_H
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#define CSS_MHU_DOORBELL_H
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#include <stdint.h>
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#include <lib/mmio.h>
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/* MHUv2 Frame Base Mask */
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#define MHU_V2_FRAME_BASE_MASK UL(~0xFFF)
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/* MHUv2 Control Registers Offsets */
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#define MHU_V2_MSG_NO_CAP_OFFSET UL(0xF80)
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#define MHU_V2_ACCESS_REQ_OFFSET UL(0xF88)
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#define MHU_V2_ACCESS_READY_OFFSET UL(0xF8C)
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#define SENDER_REG_STAT(_channel) (0x20 * (_channel))
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#define SENDER_REG_SET(_channel) ((0x20 * (_channel)) + 0xC)
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#define MHU_V3_PBX_PDBCW_PAGE_OFFSET UL(0x1000)
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#define MHU_V3_SENDER_REG_SET(_channel) (MHU_V3_PBX_PDBCW_PAGE_OFFSET + \
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SENDER_REG_SET(_channel))
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/* Helper macro to ring doorbell */
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#define MHU_RING_DOORBELL(addr, modify_mask, preserve_mask) do { \
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uint32_t db = mmio_read_32(addr) & (preserve_mask); \
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mmio_write_32(addr, db | (modify_mask)); \
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} while (0)
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#define MHU_V2_ACCESS_REQUEST(addr) \
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mmio_write_32((addr) + MHU_V2_ACCESS_REQ_OFFSET, 0x1)
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#define MHU_V2_CLEAR_REQUEST(addr) \
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mmio_write_32((addr) + MHU_V2_ACCESS_REQ_OFFSET, 0x0)
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#define MHU_V2_IS_ACCESS_READY(addr) \
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(mmio_read_32((addr) + MHU_V2_ACCESS_READY_OFFSET) & 0x1)
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struct scmi_channel_plat_info;
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void mhu_ring_doorbell(struct scmi_channel_plat_info *plat_info);
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void mhuv2_ring_doorbell(struct scmi_channel_plat_info *plat_info);
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#endif /* CSS_MHU_DOORBELL_H */
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