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/*
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2023 Ventana Micro Systems Inc.
*
* Author(s):
* Himanshu Chauhan <hchauhan@ventanamicro.com>
*/
#include <sbi/sbi_ecall.h>
#include <sbi/sbi_ecall_interface.h>
#include <sbi/sbi_error.h>
#include <sbi/sbi_trap.h>
#include <sbi/sbi_domain.h>
#include <sbi/sbi_dbtr.h>
static int sbi_ecall_dbtr_handler(unsigned long extid, unsigned long funcid,
struct sbi_trap_regs *regs,
struct sbi_ecall_return *out)
{
unsigned long smode = (csr_read(CSR_MSTATUS) & MSTATUS_MPP) >>
MSTATUS_MPP_SHIFT;
int ret = 0;
switch (funcid) {
case SBI_EXT_DBTR_NUM_TRIGGERS:
ret = sbi_dbtr_num_trig(regs->a0, &out->value);
break;
case SBI_EXT_DBTR_SETUP_SHMEM:
ret = sbi_dbtr_setup_shmem(sbi_domain_thishart_ptr(), smode,
regs->a0, regs->a1);
break;
case SBI_EXT_DBTR_TRIGGER_READ:
ret = sbi_dbtr_read_trig(smode, regs->a0, regs->a1);
break;
case SBI_EXT_DBTR_TRIGGER_INSTALL:
ret = sbi_dbtr_install_trig(smode, regs->a0, &out->value);
break;
case SBI_EXT_DBTR_TRIGGER_UNINSTALL:
ret = sbi_dbtr_uninstall_trig(regs->a0, regs->a1);
break;
case SBI_EXT_DBTR_TRIGGER_ENABLE:
ret = sbi_dbtr_enable_trig(regs->a0, regs->a1);
break;
case SBI_EXT_DBTR_TRIGGER_UPDATE:
ret = sbi_dbtr_update_trig(smode, regs->a0, regs->a1);
break;
case SBI_EXT_DBTR_TRIGGER_DISABLE:
ret = sbi_dbtr_disable_trig(regs->a0, regs->a1);
break;
default:
ret = SBI_ENOTSUPP;
};
return ret;
}
struct sbi_ecall_extension ecall_dbtr;
static int sbi_ecall_dbtr_register_extensions(void)
{
if (sbi_dbtr_get_total_triggers() == 0)
return 0;
return sbi_ecall_register_extension(&ecall_dbtr);
}
struct sbi_ecall_extension ecall_dbtr = {
.extid_start = SBI_EXT_DBTR,
.extid_end = SBI_EXT_DBTR,
.handle = sbi_ecall_dbtr_handler,
.register_extensions = sbi_ecall_dbtr_register_extensions,
};
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