powerpc/pseries: define driver for Platform KeyStore

[linux-2.6-block.git] / arch / powerpc / include / asm / hvcall.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_POWERPC_HVCALL_H
#define _ASM_POWERPC_HVCALL_H
#ifdef __KERNEL__

#define HVSC                    .long 0x44000022

#define H_SUCCESS       0
#define H_BUSY          1       /* Hardware busy -- retry later */
#define H_CLOSED        2       /* Resource closed */
#define H_NOT_AVAILABLE 3
#define H_CONSTRAINED   4       /* Resource request constrained to max allowed */
#define H_PARTIAL       5
#define H_IN_PROGRESS   14      /* Kind of like busy */
#define H_PAGE_REGISTERED 15
#define H_PARTIAL_STORE   16
#define H_PENDING       17      /* returned from H_POLL_PENDING */
#define H_CONTINUE      18      /* Returned from H_Join on success */
#define H_LONG_BUSY_START_RANGE         9900  /* Start of long busy range */
#define H_LONG_BUSY_ORDER_1_MSEC        9900  /* Long busy, hint that 1msec \
                                                 is a good time to retry */
#define H_LONG_BUSY_ORDER_10_MSEC       9901  /* Long busy, hint that 10msec \
                                                 is a good time to retry */
#define H_LONG_BUSY_ORDER_100_MSEC      9902  /* Long busy, hint that 100msec \
                                                 is a good time to retry */
#define H_LONG_BUSY_ORDER_1_SEC         9903  /* Long busy, hint that 1sec \
                                                 is a good time to retry */
#define H_LONG_BUSY_ORDER_10_SEC        9904  /* Long busy, hint that 10sec \
                                                 is a good time to retry */
#define H_LONG_BUSY_ORDER_100_SEC       9905  /* Long busy, hint that 100sec \
                                                 is a good time to retry */
#define H_LONG_BUSY_END_RANGE           9905  /* End of long busy range */

/* Internal value used in book3s_hv kvm support; not returned to guests */
#define H_TOO_HARD      9999

#define H_HARDWARE      -1      /* Hardware error */
#define H_FUNCTION      -2      /* Function not supported */
#define H_PRIVILEGE     -3      /* Caller not privileged */
#define H_PARAMETER     -4      /* Parameter invalid, out-of-range or conflicting */
#define H_BAD_MODE      -5      /* Illegal msr value */
#define H_PTEG_FULL     -6      /* PTEG is full */
#define H_NOT_FOUND     -7      /* PTE was not found" */
#define H_RESERVED_DABR -8      /* DABR address is reserved by the hypervisor on this processor" */
#define H_NO_MEM        -9
#define H_AUTHORITY     -10
#define H_PERMISSION    -11
#define H_DROPPED       -12
#define H_SOURCE_PARM   -13
#define H_DEST_PARM     -14
#define H_REMOTE_PARM   -15
#define H_RESOURCE      -16
#define H_ADAPTER_PARM  -17
#define H_RH_PARM       -18
#define H_RCQ_PARM      -19
#define H_SCQ_PARM      -20
#define H_EQ_PARM       -21
#define H_RT_PARM       -22
#define H_ST_PARM       -23
#define H_SIGT_PARM     -24
#define H_TOKEN_PARM    -25
#define H_MLENGTH_PARM  -27
#define H_MEM_PARM      -28
#define H_MEM_ACCESS_PARM -29
#define H_ATTR_PARM     -30
#define H_PORT_PARM     -31
#define H_MCG_PARM      -32
#define H_VL_PARM       -33
#define H_TSIZE_PARM    -34
#define H_TRACE_PARM    -35

#define H_MASK_PARM     -37
#define H_MCG_FULL      -38
#define H_ALIAS_EXIST   -39
#define H_P_COUNTER     -40
#define H_TABLE_FULL    -41
#define H_ALT_TABLE     -42
#define H_MR_CONDITION  -43
#define H_NOT_ENOUGH_RESOURCES -44
#define H_R_STATE       -45
#define H_RESCINDED     -46
#define H_P1            -54
#define H_P2            -55
#define H_P3            -56
#define H_P4            -57
#define H_P5            -58
#define H_P6            -59
#define H_P7            -60
#define H_P8            -61
#define H_P9            -62
#define H_NOOP          -63
#define H_TOO_BIG       -64
#define H_UNSUPPORTED   -67
#define H_OVERLAP       -68
#define H_INTERRUPT     -69
#define H_BAD_DATA      -70
#define H_NOT_ACTIVE    -71
#define H_SG_LIST       -72
#define H_OP_MODE       -73
#define H_COP_HW        -74
#define H_STATE         -75
#define H_IN_USE        -77
#define H_ABORTED       -78
#define H_UNSUPPORTED_FLAG_START        -256
#define H_UNSUPPORTED_FLAG_END          -511
#define H_MULTI_THREADS_ACTIVE  -9005
#define H_OUTSTANDING_COP_OPS   -9006


/* Long Busy is a condition that can be returned by the firmware
 * when a call cannot be completed now, but the identical call
 * should be retried later.  This prevents calls blocking in the
 * firmware for long periods of time.  Annoyingly the firmware can return
 * a range of return codes, hinting at how long we should wait before
 * retrying.  If you don't care for the hint, the macro below is a good
 * way to check for the long_busy return codes
 */
#define H_IS_LONG_BUSY(x)  ((x >= H_LONG_BUSY_START_RANGE) \
                             && (x <= H_LONG_BUSY_END_RANGE))

/* Flags */
#define H_LARGE_PAGE            (1UL<<(63-16))
#define H_EXACT                 (1UL<<(63-24))  /* Use exact PTE or return H_PTEG_FULL */
#define H_R_XLATE               (1UL<<(63-25))  /* include a valid logical page num in the pte if the valid bit is set */
#define H_READ_4                (1UL<<(63-26))  /* Return 4 PTEs */
#define H_PAGE_STATE_CHANGE     (1UL<<(63-28))
#define H_PAGE_UNUSED           ((1UL<<(63-29)) | (1UL<<(63-30)))
#define H_PAGE_SET_UNUSED       (H_PAGE_STATE_CHANGE | H_PAGE_UNUSED)
#define H_PAGE_SET_LOANED       (H_PAGE_SET_UNUSED | (1UL<<(63-31)))
#define H_PAGE_SET_ACTIVE       H_PAGE_STATE_CHANGE
#define H_AVPN                  (1UL<<(63-32))  /* An avpn is provided as a sanity test */
#define H_ANDCOND               (1UL<<(63-33))
#define H_LOCAL                 (1UL<<(63-35))
#define H_ICACHE_INVALIDATE     (1UL<<(63-40))  /* icbi, etc.  (ignored for IO pages) */
#define H_ICACHE_SYNCHRONIZE    (1UL<<(63-41))  /* dcbst, icbi, etc (ignored for IO pages */
#define H_COALESCE_CAND (1UL<<(63-42))  /* page is a good candidate for coalescing */
#define H_ZERO_PAGE             (1UL<<(63-48))  /* zero the page before mapping (ignored for IO pages) */
#define H_COPY_PAGE             (1UL<<(63-49))
#define H_N                     (1UL<<(63-61))
#define H_PP1                   (1UL<<(63-62))
#define H_PP2                   (1UL<<(63-63))

/* Flags for H_REGISTER_VPA subfunction field */
#define H_VPA_FUNC_SHIFT        (63-18) /* Bit posn of subfunction code */
#define H_VPA_FUNC_MASK         7UL
#define H_VPA_REG_VPA           1UL     /* Register Virtual Processor Area */
#define H_VPA_REG_DTL           2UL     /* Register Dispatch Trace Log */
#define H_VPA_REG_SLB           3UL     /* Register SLB shadow buffer */
#define H_VPA_DEREG_VPA         5UL     /* Deregister Virtual Processor Area */
#define H_VPA_DEREG_DTL         6UL     /* Deregister Dispatch Trace Log */
#define H_VPA_DEREG_SLB         7UL     /* Deregister SLB shadow buffer */

/* VASI States */
#define H_VASI_INVALID          0
#define H_VASI_ENABLED          1
#define H_VASI_ABORTED          2
#define H_VASI_SUSPENDING       3
#define H_VASI_SUSPENDED        4
#define H_VASI_RESUMED          5
#define H_VASI_COMPLETED        6

/* VASI signal codes. Only the Cancel code is valid for H_VASI_SIGNAL. */
#define H_VASI_SIGNAL_CANCEL    1
#define H_VASI_SIGNAL_ABORT     2
#define H_VASI_SIGNAL_SUSPEND   3
#define H_VASI_SIGNAL_COMPLETE  4
#define H_VASI_SIGNAL_ENABLE    5
#define H_VASI_SIGNAL_FAILOVER  6

/* Each control block has to be on a 4K boundary */
#define H_CB_ALIGNMENT          4096

/* pSeries hypervisor opcodes */
#define H_REMOVE                0x04
#define H_ENTER                 0x08
#define H_READ                  0x0c
#define H_CLEAR_MOD             0x10
#define H_CLEAR_REF             0x14
#define H_PROTECT               0x18
#define H_GET_TCE               0x1c
#define H_PUT_TCE               0x20
#define H_SET_SPRG0             0x24
#define H_SET_DABR              0x28
#define H_PAGE_INIT             0x2c
#define H_SET_ASR               0x30
#define H_ASR_ON                0x34
#define H_ASR_OFF               0x38
#define H_LOGICAL_CI_LOAD       0x3c
#define H_LOGICAL_CI_STORE      0x40
#define H_LOGICAL_CACHE_LOAD    0x44
#define H_LOGICAL_CACHE_STORE   0x48
#define H_LOGICAL_ICBI          0x4c
#define H_LOGICAL_DCBF          0x50
#define H_GET_TERM_CHAR         0x54
#define H_PUT_TERM_CHAR         0x58
#define H_REAL_TO_LOGICAL       0x5c
#define H_HYPERVISOR_DATA       0x60
#define H_EOI                   0x64
#define H_CPPR                  0x68
#define H_IPI                   0x6c
#define H_IPOLL                 0x70
#define H_XIRR                  0x74
#define H_PERFMON               0x7c
#define H_MIGRATE_DMA           0x78
#define H_REGISTER_VPA          0xDC
#define H_CEDE                  0xE0
#define H_CONFER                0xE4
#define H_PROD                  0xE8
#define H_GET_PPP               0xEC
#define H_SET_PPP               0xF0
#define H_PURR                  0xF4
#define H_PIC                   0xF8
#define H_REG_CRQ               0xFC
#define H_FREE_CRQ              0x100
#define H_VIO_SIGNAL            0x104
#define H_SEND_CRQ              0x108
#define H_COPY_RDMA             0x110
#define H_REGISTER_LOGICAL_LAN  0x114
#define H_FREE_LOGICAL_LAN      0x118
#define H_ADD_LOGICAL_LAN_BUFFER 0x11C
#define H_SEND_LOGICAL_LAN      0x120
#define H_BULK_REMOVE           0x124
#define H_MULTICAST_CTRL        0x130
#define H_SET_XDABR             0x134
#define H_STUFF_TCE             0x138
#define H_PUT_TCE_INDIRECT      0x13C
#define H_CHANGE_LOGICAL_LAN_MAC 0x14C
#define H_VTERM_PARTNER_INFO    0x150
#define H_REGISTER_VTERM        0x154
#define H_FREE_VTERM            0x158
#define H_RESET_EVENTS          0x15C
#define H_ALLOC_RESOURCE        0x160
#define H_FREE_RESOURCE         0x164
#define H_MODIFY_QP             0x168
#define H_QUERY_QP              0x16C
#define H_REREGISTER_PMR        0x170
#define H_REGISTER_SMR          0x174
#define H_QUERY_MR              0x178
#define H_QUERY_MW              0x17C
#define H_QUERY_HCA             0x180
#define H_QUERY_PORT            0x184
#define H_MODIFY_PORT           0x188
#define H_DEFINE_AQP1           0x18C
#define H_GET_TRACE_BUFFER      0x190
#define H_DEFINE_AQP0           0x194
#define H_RESIZE_MR             0x198
#define H_ATTACH_MCQP           0x19C
#define H_DETACH_MCQP           0x1A0
#define H_CREATE_RPT            0x1A4
#define H_REMOVE_RPT            0x1A8
#define H_REGISTER_RPAGES       0x1AC
#define H_DISABLE_AND_GET       0x1B0
#define H_ERROR_DATA            0x1B4
#define H_GET_HCA_INFO          0x1B8
#define H_GET_PERF_COUNT        0x1BC
#define H_MANAGE_TRACE          0x1C0
#define H_GET_CPU_CHARACTERISTICS 0x1C8
#define H_FREE_LOGICAL_LAN_BUFFER 0x1D4
#define H_QUERY_INT_STATE       0x1E4
#define H_POLL_PENDING          0x1D8
#define H_ILLAN_ATTRIBUTES      0x244
#define H_MODIFY_HEA_QP         0x250
#define H_QUERY_HEA_QP          0x254
#define H_QUERY_HEA             0x258
#define H_QUERY_HEA_PORT        0x25C
#define H_MODIFY_HEA_PORT       0x260
#define H_REG_BCMC              0x264
#define H_DEREG_BCMC            0x268
#define H_REGISTER_HEA_RPAGES   0x26C
#define H_DISABLE_AND_GET_HEA   0x270
#define H_GET_HEA_INFO          0x274
#define H_ALLOC_HEA_RESOURCE    0x278
#define H_ADD_CONN              0x284
#define H_DEL_CONN              0x288
#define H_JOIN                  0x298
#define H_VASI_SIGNAL           0x2A0
#define H_VASI_STATE            0x2A4
#define H_VIOCTL                0x2A8
#define H_ENABLE_CRQ            0x2B0
#define H_GET_EM_PARMS          0x2B8
#define H_SET_MPP               0x2D0
#define H_GET_MPP               0x2D4
#define H_REG_SUB_CRQ           0x2DC
#define H_HOME_NODE_ASSOCIATIVITY 0x2EC
#define H_FREE_SUB_CRQ          0x2E0
#define H_SEND_SUB_CRQ          0x2E4
#define H_SEND_SUB_CRQ_INDIRECT 0x2E8
#define H_BEST_ENERGY           0x2F4
#define H_XIRR_X                0x2FC
#define H_RANDOM                0x300
#define H_COP                   0x304
#define H_GET_MPP_X             0x314
#define H_SET_MODE              0x31C
#define H_BLOCK_REMOVE          0x328
#define H_CLEAR_HPT             0x358
#define H_REQUEST_VMC           0x360
#define H_RESIZE_HPT_PREPARE    0x36C
#define H_RESIZE_HPT_COMMIT     0x370
#define H_REGISTER_PROC_TBL     0x37C
#define H_SIGNAL_SYS_RESET      0x380
#define H_ALLOCATE_VAS_WINDOW   0x388
#define H_MODIFY_VAS_WINDOW     0x38C
#define H_DEALLOCATE_VAS_WINDOW 0x390
#define H_QUERY_VAS_WINDOW      0x394
#define H_QUERY_VAS_CAPABILITIES        0x398
#define H_QUERY_NX_CAPABILITIES 0x39C
#define H_GET_NX_FAULT          0x3A0
#define H_INT_GET_SOURCE_INFO   0x3A8
#define H_INT_SET_SOURCE_CONFIG 0x3AC
#define H_INT_GET_SOURCE_CONFIG 0x3B0
#define H_INT_GET_QUEUE_INFO    0x3B4
#define H_INT_SET_QUEUE_CONFIG  0x3B8
#define H_INT_GET_QUEUE_CONFIG  0x3BC
#define H_INT_SET_OS_REPORTING_LINE 0x3C0
#define H_INT_GET_OS_REPORTING_LINE 0x3C4
#define H_INT_ESB               0x3C8
#define H_INT_SYNC              0x3CC
#define H_INT_RESET             0x3D0
#define H_SCM_READ_METADATA     0x3E4
#define H_SCM_WRITE_METADATA    0x3E8
#define H_SCM_BIND_MEM          0x3EC
#define H_SCM_UNBIND_MEM        0x3F0
#define H_SCM_QUERY_BLOCK_MEM_BINDING 0x3F4
#define H_SCM_QUERY_LOGICAL_MEM_BINDING 0x3F8
#define H_SCM_UNBIND_ALL        0x3FC
#define H_SCM_HEALTH            0x400
#define H_SCM_PERFORMANCE_STATS 0x418
#define H_PKS_GET_CONFIG        0x41C
#define H_PKS_SET_PASSWORD      0x420
#define H_PKS_GEN_PASSWORD      0x424
#define H_PKS_WRITE_OBJECT      0x42C
#define H_PKS_GEN_KEY           0x430
#define H_PKS_READ_OBJECT       0x434
#define H_PKS_REMOVE_OBJECT     0x438
#define H_PKS_CONFIRM_OBJECT_FLUSHED    0x43C
#define H_RPT_INVALIDATE        0x448
#define H_SCM_FLUSH             0x44C
#define H_GET_ENERGY_SCALE_INFO 0x450
#define H_WATCHDOG              0x45C
#define MAX_HCALL_OPCODE        H_WATCHDOG

/* Scope args for H_SCM_UNBIND_ALL */
#define H_UNBIND_SCOPE_ALL (0x1)
#define H_UNBIND_SCOPE_DRC (0x2)

/* H_VIOCTL functions */
#define H_GET_VIOA_DUMP_SIZE    0x01
#define H_GET_VIOA_DUMP         0x02
#define H_GET_ILLAN_NUM_VLAN_IDS 0x03
#define H_GET_ILLAN_VLAN_ID_LIST 0x04
#define H_GET_ILLAN_SWITCH_ID   0x05
#define H_DISABLE_MIGRATION     0x06
#define H_ENABLE_MIGRATION      0x07
#define H_GET_PARTNER_INFO      0x08
#define H_GET_PARTNER_WWPN_LIST 0x09
#define H_DISABLE_ALL_VIO_INTS  0x0A
#define H_DISABLE_VIO_INTERRUPT 0x0B
#define H_ENABLE_VIO_INTERRUPT  0x0C
#define H_GET_SESSION_TOKEN     0x19
#define H_SESSION_ERR_DETECTED  0x1A


/* Platform specific hcalls, used by KVM */
#define H_RTAS                  0xf000

/*
 * Platform specific hcalls, used by QEMU/SLOF. These are ignored by
 * KVM and only kept here so we can identify them during tracing.
 */
#define H_LOGICAL_MEMOP  0xF001
#define H_CAS            0XF002
#define H_UPDATE_DT      0XF003

/* "Platform specific hcalls", provided by PHYP */
#define H_GET_24X7_CATALOG_PAGE 0xF078
#define H_GET_24X7_DATA         0xF07C
#define H_GET_PERF_COUNTER_INFO 0xF080

/* Platform-specific hcalls used for nested HV KVM */
#define H_SET_PARTITION_TABLE   0xF800
#define H_ENTER_NESTED          0xF804
#define H_TLB_INVALIDATE        0xF808
#define H_COPY_TOFROM_GUEST     0xF80C

/* Flags for H_SVM_PAGE_IN */
#define H_PAGE_IN_SHARED        0x1

/* Platform-specific hcalls used by the Ultravisor */
#define H_SVM_PAGE_IN           0xEF00
#define H_SVM_PAGE_OUT          0xEF04
#define H_SVM_INIT_START        0xEF08
#define H_SVM_INIT_DONE         0xEF0C
#define H_SVM_INIT_ABORT        0xEF14

/* Values for 2nd argument to H_SET_MODE */
#define H_SET_MODE_RESOURCE_SET_CIABR           1
#define H_SET_MODE_RESOURCE_SET_DAWR0           2
#define H_SET_MODE_RESOURCE_ADDR_TRANS_MODE     3
#define H_SET_MODE_RESOURCE_LE                  4
#define H_SET_MODE_RESOURCE_SET_DAWR1           5

/* Values for argument to H_SIGNAL_SYS_RESET */
#define H_SIGNAL_SYS_RESET_ALL                  -1
#define H_SIGNAL_SYS_RESET_ALL_OTHERS           -2
/* >= 0 values are CPU number */

/* H_GET_CPU_CHARACTERISTICS return values */
#define H_CPU_CHAR_SPEC_BAR_ORI31       (1ull << 63) // IBM bit 0
#define H_CPU_CHAR_BCCTRL_SERIALISED    (1ull << 62) // IBM bit 1
#define H_CPU_CHAR_L1D_FLUSH_ORI30      (1ull << 61) // IBM bit 2
#define H_CPU_CHAR_L1D_FLUSH_TRIG2      (1ull << 60) // IBM bit 3
#define H_CPU_CHAR_L1D_THREAD_PRIV      (1ull << 59) // IBM bit 4
#define H_CPU_CHAR_BRANCH_HINTS_HONORED (1ull << 58) // IBM bit 5
#define H_CPU_CHAR_THREAD_RECONFIG_CTRL (1ull << 57) // IBM bit 6
#define H_CPU_CHAR_COUNT_CACHE_DISABLED (1ull << 56) // IBM bit 7
#define H_CPU_CHAR_BCCTR_FLUSH_ASSIST   (1ull << 54) // IBM bit 9
#define H_CPU_CHAR_BCCTR_LINK_FLUSH_ASSIST (1ull << 52) // IBM bit 11

#define H_CPU_BEHAV_FAVOUR_SECURITY     (1ull << 63) // IBM bit 0
#define H_CPU_BEHAV_L1D_FLUSH_PR        (1ull << 62) // IBM bit 1
#define H_CPU_BEHAV_BNDS_CHK_SPEC_BAR   (1ull << 61) // IBM bit 2
#define H_CPU_BEHAV_FAVOUR_SECURITY_H   (1ull << 60) // IBM bit 3
#define H_CPU_BEHAV_FLUSH_COUNT_CACHE   (1ull << 58) // IBM bit 5
#define H_CPU_BEHAV_FLUSH_LINK_STACK    (1ull << 57) // IBM bit 6
#define H_CPU_BEHAV_NO_L1D_FLUSH_ENTRY  (1ull << 56) // IBM bit 7
#define H_CPU_BEHAV_NO_L1D_FLUSH_UACCESS (1ull << 55) // IBM bit 8
#define H_CPU_BEHAV_NO_STF_BARRIER      (1ull << 54) // IBM bit 9

/* Flag values used in H_REGISTER_PROC_TBL hcall */
#define PROC_TABLE_OP_MASK      0x18
#define PROC_TABLE_DEREG        0x10
#define PROC_TABLE_NEW          0x18
#define PROC_TABLE_TYPE_MASK    0x06
#define PROC_TABLE_HPT_SLB      0x00
#define PROC_TABLE_HPT_PT       0x02
#define PROC_TABLE_RADIX        0x04
#define PROC_TABLE_GTSE         0x01

/*
 * Defines for
 * H_RPT_INVALIDATE - Invalidate RPT translation lookaside information.
 */

/* Type of translation to invalidate (type) */
#define H_RPTI_TYPE_NESTED      0x0001  /* Invalidate nested guest partition-scope */
#define H_RPTI_TYPE_TLB         0x0002  /* Invalidate TLB */
#define H_RPTI_TYPE_PWC         0x0004  /* Invalidate Page Walk Cache */
/* Invalidate caching of Process Table Entries if H_RPTI_TYPE_NESTED is clear */
#define H_RPTI_TYPE_PRT         0x0008
/* Invalidate caching of Partition Table Entries if H_RPTI_TYPE_NESTED is set */
#define H_RPTI_TYPE_PAT         0x0008
#define H_RPTI_TYPE_ALL         (H_RPTI_TYPE_TLB | H_RPTI_TYPE_PWC | \
                                 H_RPTI_TYPE_PRT)
#define H_RPTI_TYPE_NESTED_ALL  (H_RPTI_TYPE_TLB | H_RPTI_TYPE_PWC | \
                                 H_RPTI_TYPE_PAT)

/* Invalidation targets (target) */
#define H_RPTI_TARGET_CMMU              0x01 /* All virtual processors in the partition */
#define H_RPTI_TARGET_CMMU_LOCAL        0x02 /* Current virtual processor */
/* All nest/accelerator agents in use by the partition */
#define H_RPTI_TARGET_NMMU              0x04

/* Page size mask (page sizes) */
#define H_RPTI_PAGE_4K  0x01
#define H_RPTI_PAGE_64K 0x02
#define H_RPTI_PAGE_2M  0x04
#define H_RPTI_PAGE_1G  0x08
#define H_RPTI_PAGE_ALL (-1UL)

#ifndef __ASSEMBLY__
#include <linux/types.h>

/**
 * plpar_hcall_norets: - Make a pseries hypervisor call with no return arguments
 * @opcode: The hypervisor call to make.
 *
 * This call supports up to 7 arguments and only returns the status of
 * the hcall. Use this version where possible, its slightly faster than
 * the other plpar_hcalls.
 */
long plpar_hcall_norets(unsigned long opcode, ...);

/* Variant which does not do hcall tracing */
long plpar_hcall_norets_notrace(unsigned long opcode, ...);

/**
 * plpar_hcall: - Make a pseries hypervisor call
 * @opcode: The hypervisor call to make.
 * @retbuf: Buffer to store up to 4 return arguments in.
 *
 * This call supports up to 6 arguments and 4 return arguments. Use
 * PLPAR_HCALL_BUFSIZE to size the return argument buffer.
 *
 * Used for all but the craziest of phyp interfaces (see plpar_hcall9)
 */
#define PLPAR_HCALL_BUFSIZE 4
long plpar_hcall(unsigned long opcode, unsigned long *retbuf, ...);

/**
 * plpar_hcall_raw: - Make a hypervisor call without calculating hcall stats
 * @opcode: The hypervisor call to make.
 * @retbuf: Buffer to store up to 4 return arguments in.
 *
 * This call supports up to 6 arguments and 4 return arguments. Use
 * PLPAR_HCALL_BUFSIZE to size the return argument buffer.
 *
 * Used when phyp interface needs to be called in real mode. Similar to
 * plpar_hcall, but plpar_hcall_raw works in real mode and does not
 * calculate hypervisor call statistics.
 */
long plpar_hcall_raw(unsigned long opcode, unsigned long *retbuf, ...);

/**
 * plpar_hcall9: - Make a pseries hypervisor call with up to 9 return arguments
 * @opcode: The hypervisor call to make.
 * @retbuf: Buffer to store up to 9 return arguments in.
 *
 * This call supports up to 9 arguments and 9 return arguments. Use
 * PLPAR_HCALL9_BUFSIZE to size the return argument buffer.
 */
#define PLPAR_HCALL9_BUFSIZE 9
long plpar_hcall9(unsigned long opcode, unsigned long *retbuf, ...);
long plpar_hcall9_raw(unsigned long opcode, unsigned long *retbuf, ...);

/* pseries hcall tracing */
extern struct static_key hcall_tracepoint_key;
void __trace_hcall_entry(unsigned long opcode, unsigned long *args);
void __trace_hcall_exit(long opcode, long retval, unsigned long *retbuf);

struct hvcall_mpp_data {
        unsigned long entitled_mem;
        unsigned long mapped_mem;
        unsigned short group_num;
        unsigned short pool_num;
        unsigned char mem_weight;
        unsigned char unallocated_mem_weight;
        unsigned long unallocated_entitlement;  /* value in bytes */
        unsigned long pool_size;
        signed long loan_request;
        unsigned long backing_mem;
};

int h_get_mpp(struct hvcall_mpp_data *);

struct hvcall_mpp_x_data {
        unsigned long coalesced_bytes;
        unsigned long pool_coalesced_bytes;
        unsigned long pool_purr_cycles;
        unsigned long pool_spurr_cycles;
        unsigned long reserved[3];
};

int h_get_mpp_x(struct hvcall_mpp_x_data *mpp_x_data);

static inline unsigned int get_longbusy_msecs(int longbusy_rc)
{
        switch (longbusy_rc) {
        case H_LONG_BUSY_ORDER_1_MSEC:
                return 1;
        case H_LONG_BUSY_ORDER_10_MSEC:
                return 10;
        case H_LONG_BUSY_ORDER_100_MSEC:
                return 100;
        case H_LONG_BUSY_ORDER_1_SEC:
                return 1000;
        case H_LONG_BUSY_ORDER_10_SEC:
                return 10000;
        case H_LONG_BUSY_ORDER_100_SEC:
                return 100000;
        default:
                return 1;
        }
}

struct h_cpu_char_result {
        u64 character;
        u64 behaviour;
};

/*
 * Register state for entering a nested guest with H_ENTER_NESTED.
 * New member must be added at the end.
 */
struct hv_guest_state {
        u64 version;            /* version of this structure layout, must be first */
        u32 lpid;
        u32 vcpu_token;
        /* These registers are hypervisor privileged (at least for writing) */
        u64 lpcr;
        u64 pcr;
        u64 amor;
        u64 dpdes;
        u64 hfscr;
        s64 tb_offset;
        u64 dawr0;
        u64 dawrx0;
        u64 ciabr;
        u64 hdec_expiry;
        u64 purr;
        u64 spurr;
        u64 ic;
        u64 vtb;
        u64 hdar;
        u64 hdsisr;
        u64 heir;
        u64 asdr;
        /* These are OS privileged but need to be set late in guest entry */
        u64 srr0;
        u64 srr1;
        u64 sprg[4];
        u64 pidr;
        u64 cfar;
        u64 ppr;
        /* Version 1 ends here */
        u64 dawr1;
        u64 dawrx1;
        /* Version 2 ends here */
};

/* Latest version of hv_guest_state structure */
#define HV_GUEST_STATE_VERSION  2

static inline int hv_guest_state_size(unsigned int version)
{
        switch (version) {
        case 1:
                return offsetofend(struct hv_guest_state, ppr);
        case 2:
                return offsetofend(struct hv_guest_state, dawrx1);
        default:
                return -1;
        }
}

/*
 * From the document "H_GetPerformanceCounterInfo Interface" v1.07
 *
 * H_GET_PERF_COUNTER_INFO argument
 */
struct hv_get_perf_counter_info_params {
        __be32 counter_request; /* I */
        __be32 starting_index;  /* IO */
        __be16 secondary_index; /* IO */
        __be16 returned_values; /* O */
        __be32 detail_rc; /* O, only needed when called via *_norets() */

        /*
         * O, size each of counter_value element in bytes, only set for version
         * >= 0x3
         */
        __be16 cv_element_size;

        /* I, 0 (zero) for versions < 0x3 */
        __u8 counter_info_version_in;

        /* O, 0 (zero) if version < 0x3. Must be set to 0 when making hcall */
        __u8 counter_info_version_out;
        __u8 reserved[0xC];
        __u8 counter_value[];
} __packed;

#define HGPCI_REQ_BUFFER_SIZE   4096
#define HGPCI_MAX_DATA_BYTES \
        (HGPCI_REQ_BUFFER_SIZE - sizeof(struct hv_get_perf_counter_info_params))

struct hv_gpci_request_buffer {
        struct hv_get_perf_counter_info_params params;
        uint8_t bytes[HGPCI_MAX_DATA_BYTES];
} __packed;

#endif /* __ASSEMBLY__ */
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_HVCALL_H */