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/*
 * Copyright (C) 2015 Regents of the University of California
 *
 *   This program is free software; you can redistribute it and/or
 *   modify it under the terms of the GNU General Public License
 *   as published by the Free Software Foundation, version 2.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 */

#ifndef _ASM_RISCV_SBI_H
#define _ASM_RISCV_SBI_H

#include <linux/types.h>

#define SBI_SET_TIMER 0
#define SBI_CONSOLE_PUTCHAR 1
#define SBI_CONSOLE_GETCHAR 2
#define SBI_CLEAR_IPI 3
#define SBI_SEND_IPI 4
#define SBI_REMOTE_FENCE_I 5
#define SBI_REMOTE_SFENCE_VMA 6
#define SBI_REMOTE_SFENCE_VMA_ASID 7
#define SBI_SHUTDOWN 8

#define SBI_CALL(which, arg0, arg1, arg2) ({			\
	register uintptr_t a0 asm ("a0") = (uintptr_t)(arg0);	\
	register uintptr_t a1 asm ("a1") = (uintptr_t)(arg1);	\
	register uintptr_t a2 asm ("a2") = (uintptr_t)(arg2);	\
	register uintptr_t a7 asm ("a7") = (uintptr_t)(which);	\
	asm volatile ("ecall"					\
		      : "+r" (a0)				\
		      : "r" (a1), "r" (a2), "r" (a7)		\
		      : "memory");				\
	a0;							\
})

/* Lazy implementations until SBI is finalized */
#define SBI_CALL_0(which) SBI_CALL(which, 0, 0, 0)
#define SBI_CALL_1(which, arg0) SBI_CALL(which, arg0, 0, 0)
#define SBI_CALL_2(which, arg0, arg1) SBI_CALL(which, arg0, arg1, 0)

static inline void sbi_console_putchar(int ch)
{
	SBI_CALL_1(SBI_CONSOLE_PUTCHAR, ch);
}

static inline int sbi_console_getchar(void)
{
	return SBI_CALL_0(SBI_CONSOLE_GETCHAR);
}

static inline void sbi_set_timer(uint64_t stime_value)
{
#if __riscv_xlen == 32
	SBI_CALL_2(SBI_SET_TIMER, stime_value, stime_value >> 32);
#else
	SBI_CALL_1(SBI_SET_TIMER, stime_value);
#endif
}

static inline void sbi_shutdown(void)
{
	SBI_CALL_0(SBI_SHUTDOWN);
}

static inline void sbi_clear_ipi(void)
{
	SBI_CALL_0(SBI_CLEAR_IPI);
}

static inline void sbi_send_ipi(const unsigned long *hart_mask)
{
	SBI_CALL_1(SBI_SEND_IPI, hart_mask);
}

static inline void sbi_remote_fence_i(const unsigned long *hart_mask)
{
	SBI_CALL_1(SBI_REMOTE_FENCE_I, hart_mask);
}

static inline void sbi_remote_sfence_vma(const unsigned long *hart_mask,
					 unsigned long start,
					 unsigned long size)
{
	SBI_CALL_1(SBI_REMOTE_SFENCE_VMA, hart_mask);
}

static inline void sbi_remote_sfence_vma_asid(const unsigned long *hart_mask,
					      unsigned long start,
					      unsigned long size,
					      unsigned long asid)
{
	SBI_CALL_1(SBI_REMOTE_SFENCE_VMA_ASID, hart_mask);
}

#endif

Filemanager

Name Type Size Permission Actions
Kbuild File 1.37 KB 0644
asm-offsets.h File 35 B 0644
asm-prototypes.h File 176 B 0644
asm.h File 1.78 KB 0644
atomic.h File 11.31 KB 0644
barrier.h File 2.59 KB 0644
bitops.h File 6.23 KB 0644
bug.h File 2.12 KB 0644
cache.h File 745 B 0644
cacheflush.h File 1.7 KB 0644
cmpxchg.h File 3.35 KB 0644
compat.h File 924 B 0644
csr.h File 3.8 KB 0644
current.h File 1.27 KB 0644
delay.h File 881 B 0644
dma-mapping.h File 1.19 KB 0644
elf.h File 2.3 KB 0644
fence.h File 279 B 0644
hwcap.h File 1013 B 0644
io.h File 11.81 KB 0644
irq.h File 841 B 0644
irqflags.h File 1.54 KB 0644
kprobes.h File 679 B 0644
linkage.h File 677 B 0644
mmu.h File 829 B 0644
mmu_context.h File 3.14 KB 0644
page.h File 3.76 KB 0644
pci.h File 1.16 KB 0644
pgalloc.h File 3.06 KB 0644
pgtable-32.h File 870 B 0644
pgtable-64.h File 2.08 KB 0644
pgtable-bits.h File 1.81 KB 0644
pgtable.h File 11.17 KB 0644
processor.h File 2.44 KB 0644
ptrace.h File 2.69 KB 0644
sbi.h File 2.6 KB 0644
smp.h File 1.59 KB 0644
spinlock.h File 2.85 KB 0644
spinlock_types.h File 906 B 0644
string.h File 838 B 0644
switch_to.h File 1.86 KB 0644
syscall.h File 2.59 KB 0644
thread_info.h File 3.11 KB 0644
timex.h File 1.29 KB 0644
tlb.h File 717 B 0644
tlbflush.h File 1.83 KB 0644
uaccess.h File 14 KB 0644
unistd.h File 638 B 0644
vdso.h File 1.49 KB 0644
word-at-a-time.h File 1.48 KB 0644