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acpi: Add support for various misc ACPI opcodes

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Add more functions to handle some miscellaneous ACPI opcodes.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass
2020-07-07 13:11:59 -06:00
committed by Bin Meng
parent 0667900049
commit 9c70e7e556
3 changed files with 278 additions and 0 deletions
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86
lib/acpi/acpigen.c
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@@ -72,6 +72,12 @@ void acpigen_pop_len(struct acpi_ctx *ctx)
p[2] = len >> 12 & 0xff;
}
void acpigen_emit_ext_op(struct acpi_ctx *ctx, uint op)
{
acpigen_emit_byte(ctx, EXT_OP_PREFIX);
acpigen_emit_byte(ctx, op);
}
char *acpigen_write_package(struct acpi_ctx *ctx, int nr_el)
{
char *p;
@@ -251,6 +257,40 @@ void acpigen_write_name(struct acpi_ctx *ctx, const char *namepath)
acpigen_emit_namestring(ctx, namepath);
}
static void acpigen_write_method_internal(struct acpi_ctx *ctx,
const char *name, uint flags)
{
acpigen_emit_byte(ctx, METHOD_OP);
acpigen_write_len_f(ctx);
acpigen_emit_namestring(ctx, name);
acpigen_emit_byte(ctx, flags);
}
/* Method (name, nargs, NotSerialized) */
void acpigen_write_method(struct acpi_ctx *ctx, const char *name, int nargs)
{
acpigen_write_method_internal(ctx, name,
nargs & ACPI_METHOD_NARGS_MASK);
}
/* Method (name, nargs, Serialized) */
void acpigen_write_method_serialized(struct acpi_ctx *ctx, const char *name,
int nargs)
{
acpigen_write_method_internal(ctx, name,
(nargs & ACPI_METHOD_NARGS_MASK) |
ACPI_METHOD_SERIALIZED_MASK);
}
void acpigen_write_sta(struct acpi_ctx *ctx, uint status)
{
/* Method (_STA, 0, NotSerialized) { Return (status) } */
acpigen_write_method(ctx, "_STA", 0);
acpigen_emit_byte(ctx, RETURN_OP);
acpigen_write_byte(ctx, status);
acpigen_pop_len(ctx);
}
/*
* ToUUID(uuid)
*
@@ -287,3 +327,49 @@ int acpigen_write_uuid(struct acpi_ctx *ctx, const char *uuid)
return 0;
}
/* Sleep (ms) */
void acpigen_write_sleep(struct acpi_ctx *ctx, u64 sleep_ms)
{
acpigen_emit_ext_op(ctx, SLEEP_OP);
acpigen_write_integer(ctx, sleep_ms);
}
void acpigen_write_store(struct acpi_ctx *ctx)
{
acpigen_emit_byte(ctx, STORE_OP);
}
/* Or (arg1, arg2, res) */
void acpigen_write_or(struct acpi_ctx *ctx, u8 arg1, u8 arg2, u8 res)
{
acpigen_emit_byte(ctx, OR_OP);
acpigen_emit_byte(ctx, arg1);
acpigen_emit_byte(ctx, arg2);
acpigen_emit_byte(ctx, res);
}
/* And (arg1, arg2, res) */
void acpigen_write_and(struct acpi_ctx *ctx, u8 arg1, u8 arg2, u8 res)
{
acpigen_emit_byte(ctx, AND_OP);
acpigen_emit_byte(ctx, arg1);
acpigen_emit_byte(ctx, arg2);
acpigen_emit_byte(ctx, res);
}
/* Not (arg, res) */
void acpigen_write_not(struct acpi_ctx *ctx, u8 arg, u8 res)
{
acpigen_emit_byte(ctx, NOT_OP);
acpigen_emit_byte(ctx, arg);
acpigen_emit_byte(ctx, res);
}
/* Store (str, DEBUG) */
void acpigen_write_debug_string(struct acpi_ctx *ctx, const char *str)
{
acpigen_write_store(ctx);
acpigen_write_string(ctx, str);
acpigen_emit_ext_op(ctx, DEBUG_OP);
}