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powerpc/pseries: Macros and wrapper functions for H_HTM call

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Define macros and wrapper functions to handle
H_HTM (Hardware Trace Macro) hypervisor call.
H_HTM is new HCALL added to export data from
Hardware Trace Macro (HTM) function.

Signed-off-by: Abhishek Dubey <adubey@linux.ibm.com>
Co-developed-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Reviewed-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20250113164039.302017-1-adubey@linux.ibm.com
This commit is contained in:
Abhishek Dubey 2025-01-13 11:40:37 -05:00 committed by Madhavan Srinivasan
parent c96b1402cc
commit 708220ae50
2 changed files with 55 additions and 0 deletions
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34
arch/powerpc/include/asm/hvcall.h
View File

@ -348,6 +348,7 @@
#define H_SCM_FLUSH 0x44C
#define H_GET_ENERGY_SCALE_INFO 0x450
#define H_PKS_SIGNED_UPDATE 0x454
#define H_HTM 0x458
#define H_WATCHDOG 0x45C
#define H_GUEST_GET_CAPABILITIES 0x460
#define H_GUEST_SET_CAPABILITIES 0x464
@ -498,6 +499,39 @@
#define H_GUEST_CAP_POWER11 (1UL<<(63-3))
#define H_GUEST_CAP_BITMAP2 (1UL<<(63-63))
/*
* Defines for H_HTM - Macros for hardware trace macro (HTM) function.
*/
#define H_HTM_FLAGS_HARDWARE_TARGET (1ul << 63)
#define H_HTM_FLAGS_LOGICAL_TARGET (1ul << 62)
#define H_HTM_FLAGS_PROCID_TARGET (1ul << 61)
#define H_HTM_FLAGS_NOWRAP (1ul << 60)
#define H_HTM_OP_SHIFT (63-15)
#define H_HTM_OP(x) ((unsigned long)(x)<<H_HTM_OP_SHIFT)
#define H_HTM_OP_CAPABILITIES 0x01
#define H_HTM_OP_STATUS 0x02
#define H_HTM_OP_SETUP 0x03
#define H_HTM_OP_CONFIGURE 0x04
#define H_HTM_OP_START 0x05
#define H_HTM_OP_STOP 0x06
#define H_HTM_OP_DECONFIGURE 0x07
#define H_HTM_OP_DUMP_DETAILS 0x08
#define H_HTM_OP_DUMP_DATA 0x09
#define H_HTM_OP_DUMP_SYSMEM_CONF 0x0a
#define H_HTM_OP_DUMP_SYSPROC_CONF 0x0b
#define H_HTM_TYPE_SHIFT (63-31)
#define H_HTM_TYPE(x) ((unsigned long)(x)<<H_HTM_TYPE_SHIFT)
#define H_HTM_TYPE_NEST 0x01
#define H_HTM_TYPE_CORE 0x02
#define H_HTM_TYPE_LLAT 0x03
#define H_HTM_TYPE_GLOBAL 0xff
#define H_HTM_TARGET_NODE_INDEX(x) ((unsigned long)(x)<<(63-15))
#define H_HTM_TARGET_NODAL_CHIP_INDEX(x) ((unsigned long)(x)<<(63-31))
#define H_HTM_TARGET_CORE_INDEX_ON_CHIP(x) ((unsigned long)(x)<<(63-47))
#ifndef __ASSEMBLY__
#include <linux/types.h>

21
arch/powerpc/include/asm/plpar_wrappers.h
View File

@ -65,6 +65,27 @@ static inline long register_dtl(unsigned long cpu, unsigned long vpa)
return vpa_call(H_VPA_REG_DTL, cpu, vpa);
}
static inline long htm_call(unsigned long flags, unsigned long target,
unsigned long operation, unsigned long param1,
unsigned long param2, unsigned long param3)
{
return plpar_hcall_norets(H_HTM, flags, target, operation,
param1, param2, param3);
}
static inline long htm_get_dump_hardware(unsigned long nodeindex,
unsigned long nodalchipindex, unsigned long coreindexonchip,
unsigned long type, unsigned long addr, unsigned long size,
unsigned long offset)
{
return htm_call(H_HTM_FLAGS_HARDWARE_TARGET,
H_HTM_TARGET_NODE_INDEX(nodeindex) |
H_HTM_TARGET_NODAL_CHIP_INDEX(nodalchipindex) |
H_HTM_TARGET_CORE_INDEX_ON_CHIP(coreindexonchip),
H_HTM_OP(H_HTM_OP_DUMP_DATA) | H_HTM_TYPE(type),
addr, size, offset);
}
extern void vpa_init(int cpu);
static inline long plpar_pte_enter(unsigned long flags,