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- /*
- * SPDX-License-Identifier: BSD-2-Clause
- *
- * Copyright (c) 2019 Western Digital Corporation or its affiliates.
- *
- * Authors:
- * Anup Patel <anup.patel@wdc.com>
- */
- #ifndef __SBI_IPI_H__
- #define __SBI_IPI_H__
- #include <sbi/sbi_types.h>
- /* clang-format off */
- #define SBI_IPI_EVENT_MAX __riscv_xlen
- /* clang-format on */
- /** IPI hardware device */
- struct sbi_ipi_device {
- /** Name of the IPI device */
- char name[32];
- /** Send IPI to a target HART */
- void (*ipi_send)(u32 target_hart);
- /** Clear IPI for a target HART */
- void (*ipi_clear)(u32 target_hart);
- };
- struct sbi_scratch;
- /** IPI event operations or callbacks */
- struct sbi_ipi_event_ops {
- /** Name of the IPI event operations */
- char name[32];
- /**
- * Update callback to save/enqueue data for remote HART
- * Note: This is an optional callback and it is called just before
- * triggering IPI to remote HART.
- */
- int (* update)(struct sbi_scratch *scratch,
- struct sbi_scratch *remote_scratch,
- u32 remote_hartid, void *data);
- /**
- * Sync callback to wait for remote HART
- * Note: This is an optional callback and it is called just after
- * triggering IPI to remote HART.
- */
- void (* sync)(struct sbi_scratch *scratch);
- /**
- * Process callback to handle IPI event
- * Note: This is a mandatory callback and it is called on the
- * remote HART after IPI is triggered.
- */
- void (* process)(struct sbi_scratch *scratch);
- };
- int sbi_ipi_send_many(ulong hmask, ulong hbase, u32 event, void *data);
- int sbi_ipi_event_create(const struct sbi_ipi_event_ops *ops);
- void sbi_ipi_event_destroy(u32 event);
- int sbi_ipi_send_smode(ulong hmask, ulong hbase);
- int sbi_ipi_send_ext(u32 hartid, void *data, u32);
- void sbi_ipi_set_amp_data_addr(unsigned long addr);
- void sbi_ipi_clear_smode(void);
- int sbi_ipi_send_halt(ulong hmask, ulong hbase);
- void sbi_ipi_process(void);
- int sbi_ipi_raw_send(u32 target_hart);
- void sbi_ipi_raw_clear(u32 target_hart);
- const struct sbi_ipi_device *sbi_ipi_get_device(void);
- void sbi_ipi_set_device(const struct sbi_ipi_device *dev);
- int sbi_ipi_init(struct sbi_scratch *scratch, bool cold_boot);
- void sbi_ipi_exit(struct sbi_scratch *scratch);
- #endif
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