forked from Mirrors/opensbi
06754612f3
Add boot-time prints for list of available standard and experimental SBI extensions. Signed-off-by: Anup Patel <apatel@ventanamicro.com>
76 lines
1.9 KiB
C
76 lines
1.9 KiB
C
/*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2023 Ventana Micro Systems Inc.
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*
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* Author(s):
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* Himanshu Chauhan <hchauhan@ventanamicro.com>
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*/
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#include <sbi/sbi_ecall.h>
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#include <sbi/sbi_ecall_interface.h>
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#include <sbi/sbi_error.h>
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#include <sbi/sbi_trap.h>
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#include <sbi/sbi_domain.h>
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#include <sbi/sbi_dbtr.h>
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static int sbi_ecall_dbtr_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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unsigned long smode = (csr_read(CSR_MSTATUS) & MSTATUS_MPP) >>
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MSTATUS_MPP_SHIFT;
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int ret = 0;
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switch (funcid) {
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case SBI_EXT_DBTR_NUM_TRIGGERS:
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ret = sbi_dbtr_num_trig(regs->a0, &out->value);
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break;
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case SBI_EXT_DBTR_SETUP_SHMEM:
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ret = sbi_dbtr_setup_shmem(sbi_domain_thishart_ptr(), smode,
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regs->a0, regs->a1);
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break;
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case SBI_EXT_DBTR_TRIGGER_READ:
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ret = sbi_dbtr_read_trig(smode, regs->a0, regs->a1);
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break;
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case SBI_EXT_DBTR_TRIGGER_INSTALL:
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ret = sbi_dbtr_install_trig(smode, regs->a0, &out->value);
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break;
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case SBI_EXT_DBTR_TRIGGER_UNINSTALL:
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ret = sbi_dbtr_uninstall_trig(regs->a0, regs->a1);
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break;
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case SBI_EXT_DBTR_TRIGGER_ENABLE:
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ret = sbi_dbtr_enable_trig(regs->a0, regs->a1);
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break;
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case SBI_EXT_DBTR_TRIGGER_UPDATE:
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ret = sbi_dbtr_update_trig(smode, regs->a0, regs->a1);
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break;
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case SBI_EXT_DBTR_TRIGGER_DISABLE:
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ret = sbi_dbtr_disable_trig(regs->a0, regs->a1);
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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_dbtr;
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static int sbi_ecall_dbtr_register_extensions(void)
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{
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if (sbi_dbtr_get_total_triggers() == 0)
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return 0;
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return sbi_ecall_register_extension(&ecall_dbtr);
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}
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struct sbi_ecall_extension ecall_dbtr = {
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.name = "dbtr",
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.extid_start = SBI_EXT_DBTR,
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.extid_end = SBI_EXT_DBTR,
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.experimental = true,
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.handle = sbi_ecall_dbtr_handler,
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.register_extensions = sbi_ecall_dbtr_register_extensions,
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};
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