diff options
Diffstat (limited to 'src/include/acpi/acpigen.h')
| -rw-r--r-- | src/include/acpi/acpigen.h | 35 |
1 files changed, 24 insertions, 11 deletions
diff --git a/src/include/acpi/acpigen.h b/src/include/acpi/acpigen.h index 3af0959cfd48..463c16d2b261 100644 --- a/src/include/acpi/acpigen.h +++ b/src/include/acpi/acpigen.h @@ -265,24 +265,37 @@ enum cppc_fields { CPPC_MAX_FIELDS_VER_3, }; +typedef struct cppc_entry { + enum { CPPC_TYPE_REG, CPPC_TYPE_DWORD } type; + union { + acpi_addr_t reg; + uint32_t dword; + }; +} cppc_entry_t; + +#define CPPC_DWORD(_dword) \ + (cppc_entry_t){ \ + .type = CPPC_TYPE_DWORD, \ + .dword = _dword, \ + } + +#define CPPC_REG(_reg) \ + (cppc_entry_t){ \ + .type = CPPC_TYPE_REG, \ + .reg = _reg, \ + } + +#define CPPC_REG_MSR(address, offset, width) CPPC_REG(ACPI_REG_MSR(address, offset, width)) +#define CPPC_UNSUPPORTED CPPC_REG(ACPI_REG_UNSUPPORTED) + struct cppc_config { u32 version; /* must be 1, 2, or 3 */ /* * The generic acpi_addr_t structure is being used, though * anything besides PPC or FFIXED generally requires checking * if the OS has advertised support for it (via _OSC). - * - * NOTE: some fields permit DWORDs to be used. If you - * provide a System Memory register with all zeros (which - * represents unsupported) then this will be used as-is. - * Otherwise, a System Memory register with a 32-bit - * width will be converted into a DWORD field (the value - * of which will be the value of 'addrl'. Any other use - * of System Memory register is currently undefined. - * (i.e., if you have an actual need for System Memory - * then you'll need to adjust this kludge). */ - acpi_addr_t regs[CPPC_MAX_FIELDS_VER_3]; + cppc_entry_t entries[CPPC_MAX_FIELDS_VER_3]; }; void acpigen_write_return_integer(uint64_t arg); |