1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
/*
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2020 Western Digital Corporation or its affiliates.
*
* Authors:
* Atish Patra <[email protected]>
*/
#include <sbi/sbi_domain.h>
#include <sbi/sbi_ecall.h>
#include <sbi/sbi_ecall_interface.h>
#include <sbi/sbi_error.h>
#include <sbi/sbi_trap.h>
#include <sbi/sbi_hsm.h>
#include <sbi/sbi_scratch.h>
#include <sbi/riscv_asm.h>
static int sbi_ecall_hsm_handler(unsigned long extid, unsigned long funcid,
struct sbi_trap_regs *regs,
struct sbi_ecall_return *out)
{
int ret = 0;
struct sbi_scratch *scratch = sbi_scratch_thishart_ptr();
ulong smode = (csr_read(CSR_MSTATUS) & MSTATUS_MPP) >>
MSTATUS_MPP_SHIFT;
switch (funcid) {
case SBI_EXT_HSM_HART_START:
ret = sbi_hsm_hart_start(scratch, sbi_domain_thishart_ptr(),
regs->a0, regs->a1, smode, regs->a2);
break;
case SBI_EXT_HSM_HART_STOP:
ret = sbi_hsm_hart_stop(scratch, true);
break;
case SBI_EXT_HSM_HART_GET_STATUS:
ret = sbi_hsm_hart_get_state(sbi_domain_thishart_ptr(),
regs->a0);
break;
case SBI_EXT_HSM_HART_SUSPEND:
ret = sbi_hsm_hart_suspend(scratch, regs->a0, regs->a1,
smode, regs->a2);
break;
default:
ret = SBI_ENOTSUPP;
}
if (ret >= 0) {
out->value = ret;
ret = 0;
}
return ret;
}
struct sbi_ecall_extension ecall_hsm;
static int sbi_ecall_hsm_register_extensions(void)
{
return sbi_ecall_register_extension(&ecall_hsm);
}
struct sbi_ecall_extension ecall_hsm = {
.name = "hsm",
.extid_start = SBI_EXT_HSM,
.extid_end = SBI_EXT_HSM,
.register_extensions = sbi_ecall_hsm_register_extensions,
.handle = sbi_ecall_hsm_handler,
};
|
