mirror of
https://github.com/riscv-software-src/opensbi
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09ad21445f
The SBI SSE extension defines a set of function that can be called to register and handle supervisor sofwtare events. This patch implements all of the functionality defined in the specification. Signed-off-by: Clément Léger <cleger@rivosinc.com> Reviewed-by: Himanshu Chauhan <hchauhan@ventanamicro.com> Reviewed-by: Anup Patel <anup@brainfault.org>
58 lines
1.4 KiB
C
58 lines
1.4 KiB
C
#include <sbi/sbi_error.h>
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#include <sbi/sbi_ecall.h>
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#include <sbi/sbi_trap.h>
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#include <sbi/sbi_sse.h>
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static int sbi_ecall_sse_handler(unsigned long extid, unsigned long funcid,
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struct sbi_trap_regs *regs,
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struct sbi_ecall_return *out)
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{
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int ret;
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switch (funcid) {
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case SBI_EXT_SSE_READ_ATTR:
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ret = sbi_sse_read_attrs(regs->a0, regs->a1, regs->a2,
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regs->a3, regs->a4);
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break;
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case SBI_EXT_SSE_WRITE_ATTR:
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ret = sbi_sse_write_attrs(regs->a0, regs->a1, regs->a2,
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regs->a3, regs->a4);
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break;
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case SBI_EXT_SSE_REGISTER:
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ret = sbi_sse_register(regs->a0, regs->a1, regs->a2);
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break;
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case SBI_EXT_SSE_UNREGISTER:
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ret = sbi_sse_unregister(regs->a0);
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break;
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case SBI_EXT_SSE_ENABLE:
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ret = sbi_sse_enable(regs->a0);
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break;
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case SBI_EXT_SSE_DISABLE:
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ret = sbi_sse_disable(regs->a0);
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break;
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case SBI_EXT_SSE_COMPLETE:
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ret = sbi_sse_complete(regs, out);
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break;
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case SBI_EXT_SSE_INJECT:
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ret = sbi_sse_inject_from_ecall(regs->a0, regs->a1, out);
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break;
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default:
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ret = SBI_ENOTSUPP;
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}
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return ret;
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}
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struct sbi_ecall_extension ecall_sse;
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static int sbi_ecall_sse_register_extensions(void)
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{
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return sbi_ecall_register_extension(&ecall_sse);
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}
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struct sbi_ecall_extension ecall_sse = {
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.extid_start = SBI_EXT_SSE,
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.extid_end = SBI_EXT_SSE,
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.register_extensions = sbi_ecall_sse_register_extensions,
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.handle = sbi_ecall_sse_handler,
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};
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