summaryrefslogtreecommitdiff
path: root/arch/powerpc/include
diff options
context:
space:
mode:
Diffstat (limited to 'arch/powerpc/include')
-rw-r--r--arch/powerpc/include/uapi/asm/papr_pdsm.h165
1 files changed, 0 insertions, 165 deletions
diff --git a/arch/powerpc/include/uapi/asm/papr_pdsm.h b/arch/powerpc/include/uapi/asm/papr_pdsm.h
deleted file mode 100644
index 17439925045c..000000000000
--- a/arch/powerpc/include/uapi/asm/papr_pdsm.h
+++ /dev/null
@@ -1,165 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-/*
- * PAPR nvDimm Specific Methods (PDSM) and structs for libndctl
- *
- * (C) Copyright IBM 2020
- *
- * Author: Vaibhav Jain <vaibhav at linux.ibm.com>
- */
-
-#ifndef _UAPI_ASM_POWERPC_PAPR_PDSM_H_
-#define _UAPI_ASM_POWERPC_PAPR_PDSM_H_
-
-#include <linux/types.h>
-#include <linux/ndctl.h>
-
-/*
- * PDSM Envelope:
- *
- * The ioctl ND_CMD_CALL exchange data between user-space and kernel via
- * envelope which consists of 2 headers sections and payload sections as
- * illustrated below:
- * +-----------------+---------------+---------------------------+
- * | 64-Bytes | 8-Bytes | Max 184-Bytes |
- * +-----------------+---------------+---------------------------+
- * | ND-HEADER | PDSM-HEADER | PDSM-PAYLOAD |
- * +-----------------+---------------+---------------------------+
- * | nd_family | | |
- * | nd_size_out | cmd_status | |
- * | nd_size_in | reserved | nd_pdsm_payload |
- * | nd_command | payload --> | |
- * | nd_fw_size | | |
- * | nd_payload ---> | | |
- * +---------------+-----------------+---------------------------+
- *
- * ND Header:
- * This is the generic libnvdimm header described as 'struct nd_cmd_pkg'
- * which is interpreted by libnvdimm before passed on to papr_scm. Important
- * member fields used are:
- * 'nd_family' : (In) NVDIMM_FAMILY_PAPR_SCM
- * 'nd_size_in' : (In) PDSM-HEADER + PDSM-IN-PAYLOAD (usually 0)
- * 'nd_size_out' : (In) PDSM-HEADER + PDSM-RETURN-PAYLOAD
- * 'nd_command' : (In) One of PAPR_PDSM_XXX
- * 'nd_fw_size' : (Out) PDSM-HEADER + size of actual payload returned
- *
- * PDSM Header:
- * This is papr-scm specific header that precedes the payload. This is defined
- * as nd_cmd_pdsm_pkg. Following fields aare available in this header:
- *
- * 'cmd_status' : (Out) Errors if any encountered while servicing PDSM.
- * 'reserved' : Not used, reserved for future and should be set to 0.
- * 'payload' : A union of all the possible payload structs
- *
- * PDSM Payload:
- *
- * The layout of the PDSM Payload is defined by various structs shared between
- * papr_scm and libndctl so that contents of payload can be interpreted. As such
- * its defined as a union of all possible payload structs as
- * 'union nd_pdsm_payload'. Based on the value of 'nd_cmd_pkg.nd_command'
- * appropriate member of the union is accessed.
- */
-
-/* Max payload size that we can handle */
-#define ND_PDSM_PAYLOAD_MAX_SIZE 184
-
-/* Max payload size that we can handle */
-#define ND_PDSM_HDR_SIZE \
- (sizeof(struct nd_pkg_pdsm) - ND_PDSM_PAYLOAD_MAX_SIZE)
-
-/* Various nvdimm health indicators */
-#define PAPR_PDSM_DIMM_HEALTHY 0
-#define PAPR_PDSM_DIMM_UNHEALTHY 1
-#define PAPR_PDSM_DIMM_CRITICAL 2
-#define PAPR_PDSM_DIMM_FATAL 3
-
-/* struct nd_papr_pdsm_health.extension_flags field flags */
-
-/* Indicate that the 'dimm_fuel_gauge' field is valid */
-#define PDSM_DIMM_HEALTH_RUN_GAUGE_VALID 1
-
-/* Indicate that the 'dimm_dsc' field is valid */
-#define PDSM_DIMM_DSC_VALID 2
-
-/*
- * Struct exchanged between kernel & ndctl in for PAPR_PDSM_HEALTH
- * Various flags indicate the health status of the dimm.
- *
- * extension_flags : Any extension fields present in the struct.
- * dimm_unarmed : Dimm not armed. So contents wont persist.
- * dimm_bad_shutdown : Previous shutdown did not persist contents.
- * dimm_bad_restore : Contents from previous shutdown werent restored.
- * dimm_scrubbed : Contents of the dimm have been scrubbed.
- * dimm_locked : Contents of the dimm cant be modified until CEC reboot
- * dimm_encrypted : Contents of dimm are encrypted.
- * dimm_health : Dimm health indicator. One of PAPR_PDSM_DIMM_XXXX
- * dimm_fuel_gauge : Life remaining of DIMM as a percentage from 0-100
- */
-struct nd_papr_pdsm_health {
- union {
- struct {
- __u32 extension_flags;
- __u8 dimm_unarmed;
- __u8 dimm_bad_shutdown;
- __u8 dimm_bad_restore;
- __u8 dimm_scrubbed;
- __u8 dimm_locked;
- __u8 dimm_encrypted;
- __u16 dimm_health;
-
- /* Extension flag PDSM_DIMM_HEALTH_RUN_GAUGE_VALID */
- __u16 dimm_fuel_gauge;
-
- /* Extension flag PDSM_DIMM_DSC_VALID */
- __u64 dimm_dsc;
- };
- __u8 buf[ND_PDSM_PAYLOAD_MAX_SIZE];
- };
-};
-
-/* Flags for injecting specific smart errors */
-#define PDSM_SMART_INJECT_HEALTH_FATAL (1 << 0)
-#define PDSM_SMART_INJECT_BAD_SHUTDOWN (1 << 1)
-
-struct nd_papr_pdsm_smart_inject {
- union {
- struct {
- /* One or more of PDSM_SMART_INJECT_ */
- __u32 flags;
- __u8 fatal_enable;
- __u8 unsafe_shutdown_enable;
- };
- __u8 buf[ND_PDSM_PAYLOAD_MAX_SIZE];
- };
-};
-
-/*
- * Methods to be embedded in ND_CMD_CALL request. These are sent to the kernel
- * via 'nd_cmd_pkg.nd_command' member of the ioctl struct
- */
-enum papr_pdsm {
- PAPR_PDSM_MIN = 0x0,
- PAPR_PDSM_HEALTH,
- PAPR_PDSM_SMART_INJECT,
- PAPR_PDSM_MAX,
-};
-
-/* Maximal union that can hold all possible payload types */
-union nd_pdsm_payload {
- struct nd_papr_pdsm_health health;
- struct nd_papr_pdsm_smart_inject smart_inject;
- __u8 buf[ND_PDSM_PAYLOAD_MAX_SIZE];
-} __packed;
-
-/*
- * PDSM-header + payload expected with ND_CMD_CALL ioctl from libnvdimm
- * Valid member of union 'payload' is identified via 'nd_cmd_pkg.nd_command'
- * that should always precede this struct when sent to papr_scm via CMD_CALL
- * interface.
- */
-struct nd_pkg_pdsm {
- __s32 cmd_status; /* Out: Sub-cmd status returned back */
- __u16 reserved[2]; /* Ignored and to be set as '0' */
- union nd_pdsm_payload payload;
-} __packed;
-
-#endif /* _UAPI_ASM_POWERPC_PAPR_PDSM_H_ */