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>
/* Top 4 bits of the value used to indicate a three-byte length value */
#define ACPI_PKG_LEN_3_BYTES 0x80
+#define ACPI_METHOD_NARGS_MASK 0x7
+#define ACPI_METHOD_SERIALIZED_MASK BIT(3)
+
/* ACPI Op/Prefix codes */
enum {
ZERO_OP = 0x00,
QWORD_PREFIX = 0x0e,
BUFFER_OP = 0x11,
PACKAGE_OP = 0x12,
+ METHOD_OP = 0x14,
+ SLEEP_OP = 0x22,
DUAL_NAME_PREFIX = 0x2e,
MULTI_NAME_PREFIX = 0x2f,
+ DEBUG_OP = 0x31,
+ EXT_OP_PREFIX = 0x5b,
ROOT_PREFIX = 0x5c,
+ LOCAL0_OP = 0x60,
+ LOCAL1_OP = 0x61,
+ LOCAL2_OP = 0x62,
+ LOCAL3_OP = 0x63,
+ LOCAL4_OP = 0x64,
+ LOCAL5_OP = 0x65,
+ LOCAL6_OP = 0x66,
+ LOCAL7_OP = 0x67,
+ STORE_OP = 0x70,
+ AND_OP = 0x7b,
+ OR_OP = 0x7d,
+ NOT_OP = 0x80,
+ RETURN_OP = 0xa4,
};
/**
*/
int acpigen_write_uuid(struct acpi_ctx *ctx, const char *uuid);
+/**
+ * acpigen_emit_ext_op() - Emit an extended op with the EXT_OP_PREFIX prefix
+ *
+ * @ctx: ACPI context pointer
+ * @op: Operation code (e.g. SLEEP_OP)
+ */
+void acpigen_emit_ext_op(struct acpi_ctx *ctx, uint op);
+
+/**
+ * acpigen_write_method() - Write a method header
+ *
+ * @ctx: ACPI context pointer
+ * @name: Method name (4 characters)
+ * @nargs: Number of method arguments (0 if none)
+ */
+void acpigen_write_method(struct acpi_ctx *ctx, const char *name, int nargs);
+
+/**
+ * acpigen_write_method_serialized() - Write a method header
+ *
+ * This sets the 'serialized' flag so that the method is thread-safe
+ *
+ * @ctx: ACPI context pointer
+ * @name: Method name (4 characters)
+ * @nargs: Number of method arguments (0 if none)
+ */
+void acpigen_write_method_serialized(struct acpi_ctx *ctx, const char *name,
+ int nargs);
+
+/**
+ * acpigen_write_sta() - Write a _STA method
+ *
+ * @ctx: ACPI context pointer
+ * @status: Status value to return
+ */
+void acpigen_write_sta(struct acpi_ctx *ctx, uint status);
+
+/**
+ * acpigen_write_sleep() - Write a sleep operation
+ *
+ * @ctx: ACPI context pointer
+ * @sleep_ms: Number of milliseconds to sleep for
+ */
+void acpigen_write_sleep(struct acpi_ctx *ctx, u64 sleep_ms);
+
+/**
+ * acpigen_write_store() - Write a store operation
+ *
+ * @ctx: ACPI context pointer
+ */
+void acpigen_write_store(struct acpi_ctx *ctx);
+
+/**
+ * acpigen_write_debug_string() - Write a debug string
+ *
+ * This writes a debug operation with an associated string
+ *
+ * @ctx: ACPI context pointer
+ * @str: String to write
+ */
+void acpigen_write_debug_string(struct acpi_ctx *ctx, const char *str);
+
+/**
+ * acpigen_write_or() - Write a bitwise OR operation
+ *
+ * res = arg1 | arg2
+ *
+ * @ctx: ACPI context pointer
+ * @arg1: ACPI opcode for operand 1 (e.g. LOCAL0_OP)
+ * @arg2: ACPI opcode for operand 2 (e.g. LOCAL1_OP)
+ * @res: ACPI opcode for result (e.g. LOCAL2_OP)
+ */
+void acpigen_write_or(struct acpi_ctx *ctx, u8 arg1, u8 arg2, u8 res);
+
+/**
+ * acpigen_write_and() - Write a bitwise AND operation
+ *
+ * res = arg1 & arg2
+ *
+ * @ctx: ACPI context pointer
+ * @arg1: ACPI opcode for operand 1 (e.g. LOCAL0_OP)
+ * @arg2: ACPI opcode for operand 2 (e.g. LOCAL1_OP)
+ * @res: ACPI opcode for result (e.g. LOCAL2_OP)
+ */
+void acpigen_write_and(struct acpi_ctx *ctx, u8 arg1, u8 arg2, u8 res);
+
+/**
+ * acpigen_write_not() - Write a bitwise NOT operation
+ *
+ * res = ~arg1
+ *
+ * @ctx: ACPI context pointer
+ * @arg: ACPI opcode for operand (e.g. LOCAL0_OP)
+ * @res: ACPI opcode for result (e.g. LOCAL2_OP)
+ */
+void acpigen_write_not(struct acpi_ctx *ctx, u8 arg, u8 res);
+
#endif
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;
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)
*
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);
+}
return 0;
}
DM_TEST(dm_test_acpi_uuid, 0);
+
+/* Test writing misc ACPI codes */
+static int dm_test_acpi_misc(struct unit_test_state *uts)
+{
+ struct acpi_ctx *ctx;
+ const int flags = 3;
+ const int nargs = 4;
+ u8 *ptr;
+
+ ut_assertok(alloc_context(&ctx));
+
+ ptr = acpigen_get_current(ctx);
+ acpigen_write_sleep(ctx, TEST_INT64);
+ ut_asserteq_64(TEST_INT64, get_unaligned((u64 *)(ptr + 3)));
+ ptr += 11;
+
+ acpigen_write_store(ctx);
+ ut_asserteq(STORE_OP, *ptr);
+ ptr++;
+
+ acpigen_write_debug_string(ctx, TEST_STRING);
+ ut_asserteq_str(TEST_STRING, (char *)ptr + 2);
+ ptr += 2 + sizeof(TEST_STRING);
+ ut_asserteq(EXT_OP_PREFIX, ptr[0]);
+ ut_asserteq(DEBUG_OP, ptr[1]);
+ ptr += 2;
+
+ acpigen_write_sta(ctx, flags);
+ ut_asserteq(METHOD_OP, ptr[0]);
+ ut_asserteq(11, acpi_test_get_length(ptr + 1));
+ ut_asserteq_strn("_STA", (char *)ptr + 4);
+ ut_asserteq(0, ptr[8]);
+ ut_asserteq(RETURN_OP, ptr[9]);
+ ut_asserteq(BYTE_PREFIX, ptr[10]);
+ ut_asserteq(flags, ptr[11]);
+ ptr += 12;
+
+ acpigen_write_sleep(ctx, TEST_INT16);
+ ut_asserteq(SLEEP_OP, ptr[1]);
+ ut_asserteq(TEST_INT16, get_unaligned((u16 *)(ptr + 3)));
+ ptr += 5;
+
+ acpigen_write_method_serialized(ctx, "FRED", nargs);
+ ut_asserteq(METHOD_OP, ptr[0]);
+ ut_asserteq_strn("FRED", (char *)ptr + 4);
+ ut_asserteq(1 << 3 | nargs, ptr[8]);
+ ut_asserteq(1, ctx->ltop); /* method is unfinished */
+
+ ptr += 9;
+ acpigen_write_or(ctx, LOCAL0_OP, LOCAL1_OP, LOCAL2_OP);
+ acpigen_write_and(ctx, LOCAL3_OP, LOCAL4_OP, LOCAL5_OP);
+ acpigen_write_not(ctx, LOCAL6_OP, LOCAL7_OP);
+ ut_asserteq(OR_OP, ptr[0]);
+ ut_asserteq(LOCAL0_OP, ptr[1]);
+ ut_asserteq(LOCAL1_OP, ptr[2]);
+ ut_asserteq(LOCAL2_OP, ptr[3]);
+
+ ptr += 4;
+ ut_asserteq(AND_OP, ptr[0]);
+ ut_asserteq(LOCAL3_OP, ptr[1]);
+ ut_asserteq(LOCAL4_OP, ptr[2]);
+ ut_asserteq(LOCAL5_OP, ptr[3]);
+
+ ptr += 4;
+ ut_asserteq(NOT_OP, ptr[0]);
+ ut_asserteq(LOCAL6_OP, ptr[1]);
+ ut_asserteq(LOCAL7_OP, ptr[2]);
+ ptr += 3;
+ ut_asserteq_ptr(ptr, ctx->current);
+
+ free_context(&ctx);
+
+ return 0;
+}
+DM_TEST(dm_test_acpi_misc, 0);
projects / u-boot.git / commitdiff
