arch/x86/include/asm/cpu_device_id.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_X86_CPU_DEVICE_ID
   3 #define _ASM_X86_CPU_DEVICE_ID
   4
   5 /*
   6  * Declare drivers belonging to specific x86 CPUs
   7  * Similar in spirit to pci_device_id and related PCI functions
   8  */
   9
  10 #include <linux/mod_devicetable.h>
  11
  12 /*
  13  * Match specific microcode revisions.
  14  *
  15  * vendor/family/model/stepping must be all set.
  16  *
  17  * Only checks against the boot CPU.  When mixed-stepping configs are
  18  * valid for a CPU model, add a quirk for every valid stepping and
  19  * do the fine-tuning in the quirk handler.
  20  */
  21
  22 struct x86_cpu_desc {
  23         u8      x86_family;
  24         u8      x86_vendor;
  25         u8      x86_model;
  26         u8      x86_stepping;
  27         u32     x86_microcode_rev;
  28 };
  29
  30 #define INTEL_CPU_DESC(model, stepping, revision) {             \
  31         .x86_family             = 6,                            \
  32         .x86_vendor             = X86_VENDOR_INTEL,             \
  33         .x86_model              = (model),                      \
  34         .x86_stepping           = (stepping),                   \
  35         .x86_microcode_rev      = (revision),                   \
  36 }
  37
  38 extern const struct x86_cpu_id *x86_match_cpu(const struct x86_cpu_id *match);
  39 extern bool x86_cpu_has_min_microcode_rev(const struct x86_cpu_desc *table);
  40
  41 #endif /* _ASM_X86_CPU_DEVICE_ID */