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Since pSeries only wants to do something different in the idle loop when there is no work to do, we can simplify the code by implementing ppc_md.power_save functions instead of complete idle loops. There are two versions: one for shared-processor partitions and one for dedicated- processor partitions. With this we also do a cede_processor() call on dedicated processor partitions if the poll_pending() call indicates that the hypervisor has work it wants to do. Signed-off-by: Paul Mackerras <paulus@samba.org>
182 lines
6.3 KiB
C
182 lines
6.3 KiB
C
#ifndef _ASM_POWERPC_HVCALL_H
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#define _ASM_POWERPC_HVCALL_H
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#ifdef __KERNEL__
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#define HVSC .long 0x44000022
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#define H_Success 0
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#define H_Busy 1 /* Hardware busy -- retry later */
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#define H_Closed 2 /* Resource closed */
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#define H_Constrained 4 /* Resource request constrained to max allowed */
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#define H_InProgress 14 /* Kind of like busy */
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#define H_Pending 17 /* returned from H_POLL_PENDING */
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#define H_Continue 18 /* Returned from H_Join on success */
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#define H_LongBusyStartRange 9900 /* Start of long busy range */
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#define H_LongBusyOrder1msec 9900 /* Long busy, hint that 1msec is a good time to retry */
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#define H_LongBusyOrder10msec 9901 /* Long busy, hint that 10msec is a good time to retry */
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#define H_LongBusyOrder100msec 9902 /* Long busy, hint that 100msec is a good time to retry */
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#define H_LongBusyOrder1sec 9903 /* Long busy, hint that 1sec is a good time to retry */
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#define H_LongBusyOrder10sec 9904 /* Long busy, hint that 10sec is a good time to retry */
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#define H_LongBusyOrder100sec 9905 /* Long busy, hint that 100sec is a good time to retry */
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#define H_LongBusyEndRange 9905 /* End of long busy range */
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#define H_Hardware -1 /* Hardware error */
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#define H_Function -2 /* Function not supported */
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#define H_Privilege -3 /* Caller not privileged */
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#define H_Parameter -4 /* Parameter invalid, out-of-range or conflicting */
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#define H_Bad_Mode -5 /* Illegal msr value */
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#define H_PTEG_Full -6 /* PTEG is full */
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#define H_Not_Found -7 /* PTE was not found" */
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#define H_Reserved_DABR -8 /* DABR address is reserved by the hypervisor on this processor" */
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#define H_NoMem -9
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#define H_Authority -10
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#define H_Permission -11
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#define H_Dropped -12
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#define H_SourceParm -13
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#define H_DestParm -14
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#define H_RemoteParm -15
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#define H_Resource -16
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/* Long Busy is a condition that can be returned by the firmware
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* when a call cannot be completed now, but the identical call
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* should be retried later. This prevents calls blocking in the
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* firmware for long periods of time. Annoyingly the firmware can return
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* a range of return codes, hinting at how long we should wait before
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* retrying. If you don't care for the hint, the macro below is a good
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* way to check for the long_busy return codes
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*/
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#define H_isLongBusy(x) ((x >= H_LongBusyStartRange) && (x <= H_LongBusyEndRange))
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/* Flags */
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#define H_LARGE_PAGE (1UL<<(63-16))
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#define H_EXACT (1UL<<(63-24)) /* Use exact PTE or return H_PTEG_FULL */
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#define H_R_XLATE (1UL<<(63-25)) /* include a valid logical page num in the pte if the valid bit is set */
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#define H_READ_4 (1UL<<(63-26)) /* Return 4 PTEs */
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#define H_AVPN (1UL<<(63-32)) /* An avpn is provided as a sanity test */
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#define H_ANDCOND (1UL<<(63-33))
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#define H_ICACHE_INVALIDATE (1UL<<(63-40)) /* icbi, etc. (ignored for IO pages) */
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#define H_ICACHE_SYNCHRONIZE (1UL<<(63-41)) /* dcbst, icbi, etc (ignored for IO pages */
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#define H_ZERO_PAGE (1UL<<(63-48)) /* zero the page before mapping (ignored for IO pages) */
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#define H_COPY_PAGE (1UL<<(63-49))
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#define H_N (1UL<<(63-61))
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#define H_PP1 (1UL<<(63-62))
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#define H_PP2 (1UL<<(63-63))
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/* DABRX flags */
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#define H_DABRX_HYPERVISOR (1UL<<(63-61))
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#define H_DABRX_KERNEL (1UL<<(63-62))
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#define H_DABRX_USER (1UL<<(63-63))
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/* pSeries hypervisor opcodes */
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#define H_REMOVE 0x04
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#define H_ENTER 0x08
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#define H_READ 0x0c
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#define H_CLEAR_MOD 0x10
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#define H_CLEAR_REF 0x14
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#define H_PROTECT 0x18
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#define H_GET_TCE 0x1c
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#define H_PUT_TCE 0x20
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#define H_SET_SPRG0 0x24
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#define H_SET_DABR 0x28
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#define H_PAGE_INIT 0x2c
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#define H_SET_ASR 0x30
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#define H_ASR_ON 0x34
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#define H_ASR_OFF 0x38
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#define H_LOGICAL_CI_LOAD 0x3c
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#define H_LOGICAL_CI_STORE 0x40
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#define H_LOGICAL_CACHE_LOAD 0x44
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#define H_LOGICAL_CACHE_STORE 0x48
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#define H_LOGICAL_ICBI 0x4c
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#define H_LOGICAL_DCBF 0x50
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#define H_GET_TERM_CHAR 0x54
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#define H_PUT_TERM_CHAR 0x58
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#define H_REAL_TO_LOGICAL 0x5c
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#define H_HYPERVISOR_DATA 0x60
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#define H_EOI 0x64
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#define H_CPPR 0x68
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#define H_IPI 0x6c
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#define H_IPOLL 0x70
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#define H_XIRR 0x74
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#define H_PERFMON 0x7c
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#define H_MIGRATE_DMA 0x78
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#define H_REGISTER_VPA 0xDC
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#define H_CEDE 0xE0
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#define H_CONFER 0xE4
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#define H_PROD 0xE8
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#define H_GET_PPP 0xEC
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#define H_SET_PPP 0xF0
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#define H_PURR 0xF4
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#define H_PIC 0xF8
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#define H_REG_CRQ 0xFC
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#define H_FREE_CRQ 0x100
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#define H_VIO_SIGNAL 0x104
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#define H_SEND_CRQ 0x108
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#define H_COPY_RDMA 0x110
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#define H_SET_XDABR 0x134
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#define H_STUFF_TCE 0x138
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#define H_PUT_TCE_INDIRECT 0x13C
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#define H_VTERM_PARTNER_INFO 0x150
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#define H_REGISTER_VTERM 0x154
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#define H_FREE_VTERM 0x158
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#define H_POLL_PENDING 0x1D8
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#define H_JOIN 0x298
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#define H_ENABLE_CRQ 0x2B0
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#ifndef __ASSEMBLY__
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/* plpar_hcall() -- Generic call interface using above opcodes
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*
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* The actual call interface is a hypervisor call instruction with
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* the opcode in R3 and input args in R4-R7.
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* Status is returned in R3 with variable output values in R4-R11.
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* Only H_PTE_READ with H_READ_4 uses R6-R11 so we ignore it for now
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* and return only two out args which MUST ALWAYS BE PROVIDED.
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*/
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long plpar_hcall(unsigned long opcode,
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unsigned long arg1,
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unsigned long arg2,
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unsigned long arg3,
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unsigned long arg4,
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unsigned long *out1,
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unsigned long *out2,
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unsigned long *out3);
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/* Same as plpar_hcall but for those opcodes that return no values
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* other than status. Slightly more efficient.
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*/
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long plpar_hcall_norets(unsigned long opcode, ...);
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/*
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* Special hcall interface for ibmveth support.
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* Takes 8 input parms. Returns a rc and stores the
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* R4 return value in *out1.
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*/
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long plpar_hcall_8arg_2ret(unsigned long opcode,
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unsigned long arg1,
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unsigned long arg2,
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unsigned long arg3,
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unsigned long arg4,
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unsigned long arg5,
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unsigned long arg6,
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unsigned long arg7,
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unsigned long arg8,
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unsigned long *out1);
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/* plpar_hcall_4out()
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*
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* same as plpar_hcall except with 4 output arguments.
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*
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*/
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long plpar_hcall_4out(unsigned long opcode,
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unsigned long arg1,
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unsigned long arg2,
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unsigned long arg3,
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unsigned long arg4,
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unsigned long *out1,
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unsigned long *out2,
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unsigned long *out3,
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unsigned long *out4);
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#endif /* __ASSEMBLY__ */
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#endif /* __KERNEL__ */
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#endif /* _ASM_POWERPC_HVCALL_H */
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