diff options
Diffstat (limited to 'lib/acpi/acpigen.c')
| -rw-r--r-- | lib/acpi/acpigen.c | 354 |
1 files changed, 354 insertions, 0 deletions
diff --git a/lib/acpi/acpigen.c b/lib/acpi/acpigen.c index c609ef4daa..e395226e3d 100644 --- a/lib/acpi/acpigen.c +++ b/lib/acpi/acpigen.c @@ -17,6 +17,9 @@ #include <acpi/acpi_table.h> #include <dm/acpi.h> +/* CPU path format */ +#define ACPI_CPU_STRING "\\_PR.CP%02d" + u8 *acpigen_get_current(struct acpi_ctx *ctx) { return ctx->current; @@ -340,6 +343,58 @@ void acpigen_write_method_serialized(struct acpi_ctx *ctx, const char *name, ACPI_METHOD_SERIALIZED_MASK); } +void acpigen_write_processor(struct acpi_ctx *ctx, uint cpuindex, + u32 pblock_addr, uint pblock_len) +{ + /* + * Processor (\_PR.CPnn, cpuindex, pblock_addr, pblock_len) + * { + */ + char pscope[16]; + + acpigen_emit_ext_op(ctx, PROCESSOR_OP); + acpigen_write_len_f(ctx); + + snprintf(pscope, sizeof(pscope), ACPI_CPU_STRING, cpuindex); + acpigen_emit_namestring(ctx, pscope); + acpigen_emit_byte(ctx, cpuindex); + acpigen_emit_dword(ctx, pblock_addr); + acpigen_emit_byte(ctx, pblock_len); +} + +void acpigen_write_processor_package(struct acpi_ctx *ctx, + const char *const name, + const uint first_core, + const uint core_count) +{ + uint i; + char pscope[16]; + + acpigen_write_name(ctx, name); + acpigen_write_package(ctx, core_count); + for (i = first_core; i < first_core + core_count; ++i) { + snprintf(pscope, sizeof(pscope), ACPI_CPU_STRING, i); + acpigen_emit_namestring(ctx, pscope); + } + acpigen_pop_len(ctx); +} + +void acpigen_write_processor_cnot(struct acpi_ctx *ctx, const uint num_cores) +{ + int core_id; + + acpigen_write_method(ctx, "\\_PR.CNOT", 1); + for (core_id = 0; core_id < num_cores; core_id++) { + char buffer[30]; + + snprintf(buffer, sizeof(buffer), ACPI_CPU_STRING, core_id); + acpigen_emit_byte(ctx, NOTIFY_OP); + acpigen_emit_namestring(ctx, buffer); + acpigen_emit_byte(ctx, ARG0_OP); + } + acpigen_pop_len(ctx); +} + void acpigen_write_device(struct acpi_ctx *ctx, const char *name) { acpigen_emit_ext_op(ctx, DEVICE_OP); @@ -426,6 +481,183 @@ void acpigen_write_register_resource(struct acpi_ctx *ctx, acpigen_write_resourcetemplate_footer(ctx); } +void acpigen_write_ppc(struct acpi_ctx *ctx, uint num_pstates) +{ + /* + * Method (_PPC, 0, NotSerialized) + * { + * Return (num_pstates) + * } + */ + acpigen_write_method(ctx, "_PPC", 0); + acpigen_emit_byte(ctx, RETURN_OP); + acpigen_write_byte(ctx, num_pstates); + acpigen_pop_len(ctx); +} + +/* + * Generates a func with max supported P-states saved + * in the variable PPCM. + */ +void acpigen_write_ppc_nvs(struct acpi_ctx *ctx) +{ + /* + * Method (_PPC, 0, NotSerialized) + * { + * Return (PPCM) + * } + */ + acpigen_write_method(ctx, "_PPC", 0); + acpigen_emit_byte(ctx, RETURN_OP); + acpigen_emit_namestring(ctx, "PPCM"); + acpigen_pop_len(ctx); +} + +void acpigen_write_tpc(struct acpi_ctx *ctx, const char *gnvs_tpc_limit) +{ + /* + * // Sample _TPC method + * Method (_TPC, 0, NotSerialized) + * { + * Return (\TLVL) + * } + */ + acpigen_write_method(ctx, "_TPC", 0); + acpigen_emit_byte(ctx, RETURN_OP); + acpigen_emit_namestring(ctx, gnvs_tpc_limit); + acpigen_pop_len(ctx); +} + +void acpigen_write_prw(struct acpi_ctx *ctx, uint wake, uint level) +{ + /* Name (_PRW, Package () { wake, level } */ + acpigen_write_name(ctx, "_PRW"); + acpigen_write_package(ctx, 2); + acpigen_write_integer(ctx, wake); + acpigen_write_integer(ctx, level); + acpigen_pop_len(ctx); +} + +void acpigen_write_pss_package(struct acpi_ctx *ctx, u32 core_freq, u32 power, + u32 trans_lat, u32 busm_lat, u32 control, + u32 status) +{ + acpigen_write_package(ctx, 6); + acpigen_write_dword(ctx, core_freq); + acpigen_write_dword(ctx, power); + acpigen_write_dword(ctx, trans_lat); + acpigen_write_dword(ctx, busm_lat); + acpigen_write_dword(ctx, control); + acpigen_write_dword(ctx, status); + acpigen_pop_len(ctx); + + log_debug("PSS: %uMHz power %u control 0x%x status 0x%x\n", + core_freq, power, control, status); +} + +void acpigen_write_psd_package(struct acpi_ctx *ctx, uint domain, uint numprocs, + enum psd_coord coordtype) +{ + acpigen_write_name(ctx, "_PSD"); + acpigen_write_package(ctx, 1); + acpigen_write_package(ctx, 5); + acpigen_write_byte(ctx, 5); // 5 values + acpigen_write_byte(ctx, 0); // revision 0 + acpigen_write_dword(ctx, domain); + acpigen_write_dword(ctx, coordtype); + acpigen_write_dword(ctx, numprocs); + acpigen_pop_len(ctx); + acpigen_pop_len(ctx); +} + +static void acpigen_write_cst_package_entry(struct acpi_ctx *ctx, + const struct acpi_cstate *cstate) +{ + acpigen_write_package(ctx, 4); + acpigen_write_register_resource(ctx, &cstate->resource); + acpigen_write_dword(ctx, cstate->ctype); + acpigen_write_dword(ctx, cstate->latency); + acpigen_write_dword(ctx, cstate->power); + acpigen_pop_len(ctx); +} + +void acpigen_write_cst_package(struct acpi_ctx *ctx, + const struct acpi_cstate *cstate, int nentries) +{ + int i; + + acpigen_write_name(ctx, "_CST"); + acpigen_write_package(ctx, nentries + 1); + acpigen_write_dword(ctx, nentries); + + for (i = 0; i < nentries; i++) + acpigen_write_cst_package_entry(ctx, cstate + i); + + acpigen_pop_len(ctx); +} + +void acpigen_write_csd_package(struct acpi_ctx *ctx, uint domain, uint numprocs, + enum csd_coord coordtype, uint index) +{ + acpigen_write_name(ctx, "_CSD"); + acpigen_write_package(ctx, 1); + acpigen_write_package(ctx, 6); + acpigen_write_byte(ctx, 6); // 6 values + acpigen_write_byte(ctx, 0); // revision 0 + acpigen_write_dword(ctx, domain); + acpigen_write_dword(ctx, coordtype); + acpigen_write_dword(ctx, numprocs); + acpigen_write_dword(ctx, index); + acpigen_pop_len(ctx); + acpigen_pop_len(ctx); +} + +void acpigen_write_tss_package(struct acpi_ctx *ctx, + struct acpi_tstate *entry, int nentries) +{ + /* + * Sample _TSS package with 100% and 50% duty cycles + * Name (_TSS, Package (0x02) + * { + * Package(){100, 1000, 0, 0x00, 0) + * Package(){50, 520, 0, 0x18, 0) + * }) + */ + struct acpi_tstate *tstate = entry; + int i; + + acpigen_write_name(ctx, "_TSS"); + acpigen_write_package(ctx, nentries); + + for (i = 0; i < nentries; i++) { + acpigen_write_package(ctx, 5); + acpigen_write_dword(ctx, tstate->percent); + acpigen_write_dword(ctx, tstate->power); + acpigen_write_dword(ctx, tstate->latency); + acpigen_write_dword(ctx, tstate->control); + acpigen_write_dword(ctx, tstate->status); + acpigen_pop_len(ctx); + tstate++; + } + + acpigen_pop_len(ctx); +} + +void acpigen_write_tsd_package(struct acpi_ctx *ctx, u32 domain, u32 numprocs, + enum psd_coord coordtype) +{ + acpigen_write_name(ctx, "_TSD"); + acpigen_write_package(ctx, 1); + acpigen_write_package(ctx, 5); + acpigen_write_byte(ctx, 5); // 5 values + acpigen_write_byte(ctx, 0); // revision 0 + acpigen_write_dword(ctx, domain); + acpigen_write_dword(ctx, coordtype); + acpigen_write_dword(ctx, numprocs); + acpigen_pop_len(ctx); + acpigen_pop_len(ctx); +} + /* * ToUUID(uuid) * @@ -531,6 +763,128 @@ void acpigen_write_debug_string(struct acpi_ctx *ctx, const char *str) acpigen_emit_ext_op(ctx, DEBUG_OP); } +void acpigen_write_if(struct acpi_ctx *ctx) +{ + acpigen_emit_byte(ctx, IF_OP); + acpigen_write_len_f(ctx); +} + +void acpigen_write_if_lequal_op_int(struct acpi_ctx *ctx, uint op, u64 val) +{ + acpigen_write_if(ctx); + acpigen_emit_byte(ctx, LEQUAL_OP); + acpigen_emit_byte(ctx, op); + acpigen_write_integer(ctx, val); +} + +void acpigen_write_else(struct acpi_ctx *ctx) +{ + acpigen_emit_byte(ctx, ELSE_OP); + acpigen_write_len_f(ctx); +} + +void acpigen_write_to_buffer(struct acpi_ctx *ctx, uint src, uint dst) +{ + acpigen_emit_byte(ctx, TO_BUFFER_OP); + acpigen_emit_byte(ctx, src); + acpigen_emit_byte(ctx, dst); +} + +void acpigen_write_to_integer(struct acpi_ctx *ctx, uint src, uint dst) +{ + acpigen_emit_byte(ctx, TO_INTEGER_OP); + acpigen_emit_byte(ctx, src); + acpigen_emit_byte(ctx, dst); +} + +void acpigen_write_byte_buffer(struct acpi_ctx *ctx, u8 *arr, size_t size) +{ + size_t i; + + acpigen_emit_byte(ctx, BUFFER_OP); + acpigen_write_len_f(ctx); + acpigen_write_integer(ctx, size); + + for (i = 0; i < size; i++) + acpigen_emit_byte(ctx, arr[i]); + + acpigen_pop_len(ctx); +} + +void acpigen_write_return_byte_buffer(struct acpi_ctx *ctx, u8 *arr, + size_t size) +{ + acpigen_emit_byte(ctx, RETURN_OP); + acpigen_write_byte_buffer(ctx, arr, size); +} + +void acpigen_write_return_singleton_buffer(struct acpi_ctx *ctx, uint arg) +{ + u8 buf = arg; + + acpigen_write_return_byte_buffer(ctx, &buf, 1); +} + +void acpigen_write_return_byte(struct acpi_ctx *ctx, uint arg) +{ + acpigen_emit_byte(ctx, RETURN_OP); + acpigen_write_byte(ctx, arg); +} + +void acpigen_write_dsm_start(struct acpi_ctx *ctx) +{ + /* Method (_DSM, 4, Serialized) */ + acpigen_write_method_serialized(ctx, "_DSM", 4); + + /* ToBuffer (Arg0, Local0) */ + acpigen_write_to_buffer(ctx, ARG0_OP, LOCAL0_OP); +} + +int acpigen_write_dsm_uuid_start(struct acpi_ctx *ctx, const char *uuid) +{ + int ret; + + /* If (LEqual (Local0, ToUUID(uuid))) */ + acpigen_write_if(ctx); + acpigen_emit_byte(ctx, LEQUAL_OP); + acpigen_emit_byte(ctx, LOCAL0_OP); + ret = acpigen_write_uuid(ctx, uuid); + if (ret) + return log_msg_ret("uuid", ret); + + /* ToInteger (Arg2, Local1) */ + acpigen_write_to_integer(ctx, ARG2_OP, LOCAL1_OP); + + return 0; +} + +void acpigen_write_dsm_uuid_start_cond(struct acpi_ctx *ctx, int seq) +{ + /* If (LEqual (Local1, i)) */ + acpigen_write_if_lequal_op_int(ctx, LOCAL1_OP, seq); +} + +void acpigen_write_dsm_uuid_end_cond(struct acpi_ctx *ctx) +{ + acpigen_pop_len(ctx); /* If */ +} + +void acpigen_write_dsm_uuid_end(struct acpi_ctx *ctx) +{ + /* Default case: Return (Buffer (One) { 0x0 }) */ + acpigen_write_return_singleton_buffer(ctx, 0x0); + + acpigen_pop_len(ctx); /* If (LEqual (Local0, ToUUID(uuid))) */ +} + +void acpigen_write_dsm_end(struct acpi_ctx *ctx) +{ + /* Return (Buffer (One) { 0x0 }) */ + acpigen_write_return_singleton_buffer(ctx, 0x0); + + acpigen_pop_len(ctx); /* Method _DSM */ +} + /** * acpigen_get_dw0_in_local5() - Generate code to put dw0 cfg0 in local5 * |