Release 4.11 drivers/acpi/nfit/nfit.h

Directory: drivers/acpi/nfit
/*
 * NVDIMM Firmware Interface Table - NFIT
 *
 * Copyright(c) 2013-2015 Intel Corporation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 */
#ifndef __NFIT_H__

#define __NFIT_H__
#include <linux/workqueue.h>
#include <linux/libnvdimm.h>
#include <linux/ndctl.h>
#include <linux/types.h>
#include <linux/uuid.h>
#include <linux/acpi.h>
#include <acpi/acuuid.h>

/* ACPI 6.1 */

#define UUID_NFIT_BUS "2f10e7a4-9e91-11e4-89d3-123b93f75cba"

/* http://pmem.io/documents/NVDIMM_DSM_Interface_Example.pdf */

#define UUID_NFIT_DIMM "4309ac30-0d11-11e4-9191-0800200c9a66"

/* https://github.com/HewlettPackard/hpe-nvm/blob/master/Documentation/ */

#define UUID_NFIT_DIMM_N_HPE1 "9002c334-acf3-4c0e-9642-a235f0d53bc6"

#define UUID_NFIT_DIMM_N_HPE2 "5008664b-b758-41a0-a03c-27c2f2d04f7e"

/* https://msdn.microsoft.com/library/windows/hardware/mt604741 */

#define UUID_NFIT_DIMM_N_MSFT "1ee68b36-d4bd-4a1a-9a16-4f8e53d46e05"


#define ACPI_NFIT_MEM_FAILED_MASK (ACPI_NFIT_MEM_SAVE_FAILED \
                | ACPI_NFIT_MEM_RESTORE_FAILED | ACPI_NFIT_MEM_FLUSH_FAILED \
                | ACPI_NFIT_MEM_NOT_ARMED)


enum nfit_uuids {
	/* for simplicity alias the uuid index with the family id */
	
NFIT_DEV_DIMM = NVDIMM_FAMILY_INTEL,
	
NFIT_DEV_DIMM_N_HPE1 = NVDIMM_FAMILY_HPE1,
	
NFIT_DEV_DIMM_N_HPE2 = NVDIMM_FAMILY_HPE2,
	
NFIT_DEV_DIMM_N_MSFT = NVDIMM_FAMILY_MSFT,
	
NFIT_SPA_VOLATILE,
	
NFIT_SPA_PM,
	
NFIT_SPA_DCR,
	
NFIT_SPA_BDW,
	
NFIT_SPA_VDISK,
	
NFIT_SPA_VCD,
	
NFIT_SPA_PDISK,
	
NFIT_SPA_PCD,
	
NFIT_DEV_BUS,
	
NFIT_UUID_MAX,
};

/*
 * Region format interface codes are stored with the interface as the
 * LSB and the function as the MSB.
 */

#define NFIT_FIC_BYTE cpu_to_le16(0x101) 
/* byte-addressable energy backed */

#define NFIT_FIC_BLK cpu_to_le16(0x201) 
/* block-addressable non-energy backed */

#define NFIT_FIC_BYTEN cpu_to_le16(0x301) 
/* byte-addressable non-energy backed */

enum {
	
NFIT_BLK_READ_FLUSH = 1,
	
NFIT_BLK_DCR_LATCH = 2,
	
NFIT_ARS_STATUS_DONE = 0,
	
NFIT_ARS_STATUS_BUSY = 1 << 16,
	
NFIT_ARS_STATUS_NONE = 2 << 16,
	
NFIT_ARS_STATUS_INTR = 3 << 16,
	
NFIT_ARS_START_BUSY = 6,
	
NFIT_ARS_CAP_NONE = 1,
	
NFIT_ARS_F_OVERFLOW = 1,
	
NFIT_ARS_TIMEOUT = 90,
};


enum nfit_root_notifiers {
	
NFIT_NOTIFY_UPDATE = 0x80,
};


enum nfit_dimm_notifiers {
	
NFIT_NOTIFY_DIMM_HEALTH = 0x81,
};


struct nfit_spa {
	
struct list_head list;
	
struct nd_region *nd_region;
	
unsigned int ars_required:1;
	
u32 clear_err_unit;
	
u32 max_ars;
	
struct acpi_nfit_system_address spa[0];
};


struct nfit_dcr {
	
struct list_head list;
	
struct acpi_nfit_control_region dcr[0];
};


struct nfit_bdw {
	
struct list_head list;
	
struct acpi_nfit_data_region bdw[0];
};


struct nfit_idt {
	
struct list_head list;
	
struct acpi_nfit_interleave idt[0];
};


struct nfit_flush {
	
struct list_head list;
	
struct acpi_nfit_flush_address flush[0];
};


struct nfit_memdev {
	
struct list_head list;
	
struct acpi_nfit_memory_map memdev[0];
};

/* assembled tables for a given dimm/memory-device */

struct nfit_mem {
	
struct nvdimm *nvdimm;
	
struct acpi_nfit_memory_map *memdev_dcr;
	
struct acpi_nfit_memory_map *memdev_pmem;
	
struct acpi_nfit_memory_map *memdev_bdw;
	
struct acpi_nfit_control_region *dcr;
	
struct acpi_nfit_data_region *bdw;
	
struct acpi_nfit_system_address *spa_dcr;
	
struct acpi_nfit_system_address *spa_bdw;
	
struct acpi_nfit_interleave *idt_dcr;
	
struct acpi_nfit_interleave *idt_bdw;
	
struct kernfs_node *flags_attr;
	
struct nfit_flush *nfit_flush;
	
struct list_head list;
	
struct acpi_device *adev;
	
struct acpi_nfit_desc *acpi_desc;
	
struct resource *flush_wpq;
	
unsigned long dsm_mask;
	
int family;
};


struct acpi_nfit_desc {
	
struct nvdimm_bus_descriptor nd_desc;
	
struct acpi_table_header acpi_header;
	
struct mutex init_mutex;
	
struct list_head memdevs;
	
struct list_head flushes;
	
struct list_head dimms;
	
struct list_head spas;
	
struct list_head dcrs;
	
struct list_head bdws;
	
struct list_head idts;
	
struct nvdimm_bus *nvdimm_bus;
	
struct device *dev;
	
struct nd_cmd_ars_status *ars_status;
	
size_t ars_status_size;
	
struct work_struct work;
	
struct list_head list;
	
struct kernfs_node *scrub_count_state;
	
unsigned int scrub_count;
	
unsigned int scrub_mode;
	
unsigned int cancel:1;
	
unsigned long dimm_cmd_force_en;
	
unsigned long bus_cmd_force_en;
	
int (*blk_do_io)(struct nd_blk_region *ndbr, resource_size_t dpa,
			void *iobuf, u64 len, int rw);
};


enum scrub_mode {
	
HW_ERROR_SCRUB_OFF,
	
HW_ERROR_SCRUB_ON,
};


enum nd_blk_mmio_selector {
	
BDW,
	
DCR,
};


struct nd_blk_addr {
	union {
		
void __iomem *base;
		
void *aperture;
	};
};


struct nfit_blk {
	
struct nfit_blk_mmio {
		
struct nd_blk_addr addr;
		
u64 size;
		
u64 base_offset;
		
u32 line_size;
		
u32 num_lines;
		
u32 table_size;
		
struct acpi_nfit_interleave *idt;
		
struct acpi_nfit_system_address *spa;
	} 
mmio[2];
	
struct nd_region *nd_region;
	
u64 bdw_offset; /* post interleave offset */
	
u64 stat_offset;
	
u64 cmd_offset;
	
u32 dimm_flags;
};

extern struct list_head acpi_descs;
extern struct mutex acpi_desc_lock;
int acpi_nfit_ars_rescan(struct acpi_nfit_desc *acpi_desc);

#ifdef CONFIG_X86_MCE
void nfit_mce_register(void);
void nfit_mce_unregister(void);
#else


static inline void nfit_mce_register(void)
{
}
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Vishal Verma 6 75.00% 1 50.00%
Ross Zwisler 2 25.00% 1 50.00%
Total 8 100.00% 2 100.00%



static inline void nfit_mce_unregister(void)
{
}
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Total 8 100.00% 1 100.00%

#endif

int nfit_spa_type(struct acpi_nfit_system_address *spa);



static inline struct acpi_nfit_memory_map *__to_nfit_memdev(
		struct nfit_mem *nfit_mem)
{
	if (nfit_mem->memdev_dcr)
		return nfit_mem->memdev_dcr;
	return nfit_mem->memdev_pmem;
}

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static inline struct acpi_nfit_desc *to_acpi_desc(
		struct nvdimm_bus_descriptor *nd_desc)
{
	return container_of(nd_desc, struct acpi_nfit_desc, nd_desc);
}

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Total 25 100.00% 1 100.00%

const u8 *to_nfit_uuid(enum nfit_uuids id);
int acpi_nfit_init(struct acpi_nfit_desc *acpi_desc, void *nfit, acpi_size sz);
void __acpi_nfit_notify(struct device *dev, acpi_handle handle, u32 event);
void __acpi_nvdimm_notify(struct device *dev, u32 event);
int acpi_nfit_ctl(struct nvdimm_bus_descriptor *nd_desc, struct nvdimm *nvdimm,
		unsigned int cmd, void *buf, unsigned int buf_len, int *cmd_rc);
void acpi_nfit_desc_init(struct acpi_nfit_desc *acpi_desc, struct device *dev);
#endif /* __NFIT_H__ */
Overall Contributors
Person Tokens Prop Commits CommitProp
Dan J Williams 554 67.64% 23 63.89%
Ross Zwisler 154 18.80% 4 11.11%
Vishal Verma 97 11.84% 6 16.67%
Stuart Hayes 9 1.10% 1 2.78%
Linda Knippers 4 0.49% 1 2.78%
Robert Moore 1 0.12% 1 2.78%
Total 819 100.00% 36 100.00%
Directory: drivers/acpi/nfit

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Person	Tokens	Prop	Commits	CommitProp
Vishal Verma	6	75.00%	1	50.00%
Ross Zwisler	2	25.00%	1	50.00%
Total	8	100.00%	2	100.00%
cregit-Linux how code gets into the kernel

Release 4.11 drivers/acpi/nfit/nfit.h

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