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lib: sbi: Add support for Supervisor Software Events extension

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This extension [1] allows to deliver events from SBI to supervisor via
a software mechanism. This extension defines events (either local or
global) which are signaled by the SBI on specific signal sources (IRQ,
exceptions, etc) and are injected to be executed in supervisor mode.

[1] https://lists.riscv.org/g/tech-prs/message/798

Signed-off-by: Clément Léger <cleger@rivosinc.com>
Reviewed-by: Himanshu Chauhan <hchauhan@ventanamicro.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Clément Léger
2024-03-21 16:57:16 +01:00
committed by Anup Patel
parent 76d7e9b8ee
commit c8cdf01d8f
7 changed files with 1322 additions and 1 deletions
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2
include/sbi/sbi_error.h
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@@ -24,6 +24,8 @@
#define SBI_EALREADY_STARTED SBI_ERR_ALREADY_STARTED
#define SBI_EALREADY_STOPPED SBI_ERR_ALREADY_STOPPED
#define SBI_ENO_SHMEM SBI_ERR_NO_SHMEM
#define SBI_EINVALID_STATE SBI_ERR_INVALID_STATE
#define SBI_EBAD_RANGE SBI_ERR_BAD_RANGE
#define SBI_ENODEV -1000
#define SBI_ENOSYS -1001