40 lines
985 B
C
40 lines
985 B
C
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_RISCV_CLINT_H
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#define _ASM_RISCV_CLINT_H 1
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#include <linux/io.h>
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#include <linux/smp.h>
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#ifdef CONFIG_RISCV_M_MODE
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extern u32 __iomem *clint_ipi_base;
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void clint_init_boot_cpu(void);
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static inline void clint_send_ipi_single(unsigned long hartid)
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{
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writel(1, clint_ipi_base + hartid);
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}
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static inline void clint_send_ipi_mask(const struct cpumask *hartid_mask)
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{
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int hartid;
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for_each_cpu(hartid, hartid_mask)
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clint_send_ipi_single(hartid);
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}
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static inline void clint_clear_ipi(unsigned long hartid)
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{
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writel(0, clint_ipi_base + hartid);
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}
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#else /* CONFIG_RISCV_M_MODE */
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#define clint_init_boot_cpu() do { } while (0)
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/* stubs to for code is only reachable under IS_ENABLED(CONFIG_RISCV_M_MODE): */
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void clint_send_ipi_single(unsigned long hartid);
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void clint_send_ipi_mask(const struct cpumask *hartid_mask);
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void clint_clear_ipi(unsigned long hartid);
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#endif /* CONFIG_RISCV_M_MODE */
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#endif /* _ASM_RISCV_CLINT_H */
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