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| author | Clément Léger <cleger@rivosinc.com> | 2024-03-21 16:57:17 +0100 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2024-04-05 15:49:02 +0530 |
| commit | 09ad21445fe0a96452b4b3334f0ab0c412c62b3c (patch) | |
| tree | c98d0d5aa0e3f2988980b1c4ef9fecf4f62326f9 | |
| parent | c8cdf01d8f3a87a581c5b03d157dbf12913e9fb5 (diff) | |
| download | opensbi-09ad21445fe0a96452b4b3334f0ab0c412c62b3c.zip opensbi-09ad21445fe0a96452b4b3334f0ab0c412c62b3c.tar.gz opensbi-09ad21445fe0a96452b4b3334f0ab0c412c62b3c.tar.bz2 | |
lib: sbi: Implement SBI SSE extension
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>
| -rw-r--r-- | lib/sbi/Kconfig | 4 | ||||
| -rw-r--r-- | lib/sbi/objects.mk | 3 | ||||
| -rw-r--r-- | lib/sbi/sbi_ecall_sse.c | 57 |
3 files changed, 64 insertions, 0 deletions
diff --git a/lib/sbi/Kconfig b/lib/sbi/Kconfig index e3038ee..cc8e031 100644 --- a/lib/sbi/Kconfig +++ b/lib/sbi/Kconfig @@ -54,4 +54,8 @@ config SBIUNIT bool "Enable SBIUNIT tests" default n +config SBI_ECALL_SSE + bool "SSE extension" + default y + endmenu diff --git a/lib/sbi/objects.mk b/lib/sbi/objects.mk index 2b9ac1f..b1c4a50 100644 --- a/lib/sbi/objects.mk +++ b/lib/sbi/objects.mk @@ -55,6 +55,9 @@ libsbi-objs-$(CONFIG_SBI_ECALL_VENDOR) += sbi_ecall_vendor.o carray-sbi_ecall_exts-$(CONFIG_SBI_ECALL_DBTR) += ecall_dbtr libsbi-objs-$(CONFIG_SBI_ECALL_DBTR) += sbi_ecall_dbtr.o +carray-sbi_ecall_exts-$(CONFIG_SBI_ECALL_SSE) += ecall_sse +libsbi-objs-$(CONFIG_SBI_ECALL_SSE) += sbi_ecall_sse.o + libsbi-objs-y += sbi_bitmap.o libsbi-objs-y += sbi_bitops.o libsbi-objs-y += sbi_console.o diff --git a/lib/sbi/sbi_ecall_sse.c b/lib/sbi/sbi_ecall_sse.c new file mode 100644 index 0000000..a28a033 --- /dev/null +++ b/lib/sbi/sbi_ecall_sse.c @@ -0,0 +1,57 @@ +#include <sbi/sbi_error.h> +#include <sbi/sbi_ecall.h> +#include <sbi/sbi_trap.h> +#include <sbi/sbi_sse.h> + +static int sbi_ecall_sse_handler(unsigned long extid, unsigned long funcid, + struct sbi_trap_regs *regs, + struct sbi_ecall_return *out) +{ + int ret; + + switch (funcid) { + case SBI_EXT_SSE_READ_ATTR: + ret = sbi_sse_read_attrs(regs->a0, regs->a1, regs->a2, + regs->a3, regs->a4); + break; + case SBI_EXT_SSE_WRITE_ATTR: + ret = sbi_sse_write_attrs(regs->a0, regs->a1, regs->a2, + regs->a3, regs->a4); + break; + case SBI_EXT_SSE_REGISTER: + ret = sbi_sse_register(regs->a0, regs->a1, regs->a2); + break; + case SBI_EXT_SSE_UNREGISTER: + ret = sbi_sse_unregister(regs->a0); + break; + case SBI_EXT_SSE_ENABLE: + ret = sbi_sse_enable(regs->a0); + break; + case SBI_EXT_SSE_DISABLE: + ret = sbi_sse_disable(regs->a0); + break; + case SBI_EXT_SSE_COMPLETE: + ret = sbi_sse_complete(regs, out); + break; + case SBI_EXT_SSE_INJECT: + ret = sbi_sse_inject_from_ecall(regs->a0, regs->a1, out); + break; + default: + ret = SBI_ENOTSUPP; + } + return ret; +} + +struct sbi_ecall_extension ecall_sse; + +static int sbi_ecall_sse_register_extensions(void) +{ + return sbi_ecall_register_extension(&ecall_sse); +} + +struct sbi_ecall_extension ecall_sse = { + .extid_start = SBI_EXT_SSE, + .extid_end = SBI_EXT_SSE, + .register_extensions = sbi_ecall_sse_register_extensions, + .handle = sbi_ecall_sse_handler, +}; |