include/linux/peci-cpu.h

Source file repositories/reference/linux-study-clean/include/linux/peci-cpu.h

File Facts

System
Linux kernel
Corpus path
include/linux/peci-cpu.h
Extension
.h
Size
2340 bytes
Lines
65
Domain
Core OS
Bucket
Core Kernel Interface
Inferred role
Core OS: implementation source
Status
source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef __LINUX_PECI_CPU_H
#define __LINUX_PECI_CPU_H

#include <linux/types.h>

/* Copied from x86 <asm/processor.h> */
#define X86_VENDOR_INTEL       0

/* Copied from x86 <asm/cpu_device_id.h> */
#define VFM_MODEL_BIT	0
#define VFM_FAMILY_BIT	8
#define VFM_VENDOR_BIT	16
#define VFM_RSVD_BIT	24

#define	VFM_MODEL_MASK	GENMASK(VFM_FAMILY_BIT - 1, VFM_MODEL_BIT)
#define	VFM_FAMILY_MASK	GENMASK(VFM_VENDOR_BIT - 1, VFM_FAMILY_BIT)
#define	VFM_VENDOR_MASK	GENMASK(VFM_RSVD_BIT - 1, VFM_VENDOR_BIT)

#define VFM_MODEL(vfm)	(((vfm) & VFM_MODEL_MASK) >> VFM_MODEL_BIT)
#define VFM_FAMILY(vfm)	(((vfm) & VFM_FAMILY_MASK) >> VFM_FAMILY_BIT)
#define VFM_VENDOR(vfm)	(((vfm) & VFM_VENDOR_MASK) >> VFM_VENDOR_BIT)

#define	VFM_MAKE(_vendor, _family, _model) (	\
	((_model) << VFM_MODEL_BIT) |		\
	((_family) << VFM_FAMILY_BIT) |		\
	((_vendor) << VFM_VENDOR_BIT)		\
)
/* End of copied code */

#include "../../arch/x86/include/asm/intel-family.h"

#define PECI_PCS_PKG_ID			0  /* Package Identifier Read */
#define  PECI_PKG_ID_CPU_ID		0x0000  /* CPUID Info */
#define  PECI_PKG_ID_PLATFORM_ID	0x0001  /* Platform ID */
#define  PECI_PKG_ID_DEVICE_ID		0x0002  /* Uncore Device ID */
#define  PECI_PKG_ID_MAX_THREAD_ID	0x0003  /* Max Thread ID */
#define  PECI_PKG_ID_MICROCODE_REV	0x0004  /* CPU Microcode Update Revision */
#define  PECI_PKG_ID_MCA_ERROR_LOG	0x0005  /* Machine Check Status */
#define PECI_PCS_MODULE_TEMP		9  /* Per Core DTS Temperature Read */
#define PECI_PCS_THERMAL_MARGIN		10 /* DTS thermal margin */
#define PECI_PCS_DDR_DIMM_TEMP		14 /* DDR DIMM Temperature */
#define PECI_PCS_TEMP_TARGET		16 /* Temperature Target Read */
#define PECI_PCS_TDP_UNITS		30 /* Units for power/energy registers */

struct peci_device;

int peci_temp_read(struct peci_device *device, s16 *temp_raw);

int peci_pcs_read(struct peci_device *device, u8 index,
		  u16 param, u32 *data);

int peci_pci_local_read(struct peci_device *device, u8 bus, u8 dev,
			u8 func, u16 reg, u32 *data);

int peci_ep_pci_local_read(struct peci_device *device, u8 seg,
			   u8 bus, u8 dev, u8 func, u16 reg, u32 *data);

int peci_mmio_read(struct peci_device *device, u8 bar, u8 seg,
		   u8 bus, u8 dev, u8 func, u64 address, u32 *data);

#endif /* __LINUX_PECI_CPU_H */

Annotation

Implementation Notes