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linux_dsm_epyc7002/arch/x86/include/asm/perf_event_p4.h
Cyrill Gorcunov 047a3772fe perf, x86: P4 PMU - Fix unflagged overflows handling 
Don found that P4 PMU reads CCCR register instead of counter
itself (in attempt to catch unflagged event) this makes P4
NMI handler to consume all NMIs it observes. So the other
NMI users such as kgdb simply have no chance to get NMI
on their hands.

Side note: at moment there is no way to run nmi-watchdog
together with perf tool. This is because both 'perf top' and
nmi-watchdog use same event. So while nmi-watchdog reserves
one event/counter for own needs there is no room for perf tool
left (there is a way to disable nmi-watchdog on boot of course).

Ming has tested this patch with the following results

 | 1. watchdog disabled
 |
 | kgdb tests on boot OK
 | perf works OK
 |
 | 2. watchdog enabled, without patch perf-x86-p4-nmi-4
 |
 | kgdb tests on boot hang
 |
 | 3. watchdog enabled, without patch perf-x86-p4-nmi-4 and do not run kgdb
 | tests on boot
 |
 | "perf top" partialy works
 |   cpu-cycles            no
 |   instructions          yes
 |   cache-references      no
 |   cache-misses          no
 |   branch-instructions   no
 |   branch-misses         yes
 |   bus-cycles            no
 |
 | 4. watchdog enabled, with patch perf-x86-p4-nmi-4 applied
 |
 | kgdb tests on boot OK
 | perf does not work, NMI "Dazed and confused" messages show up
 |

Which means we still have problems with p4 box due to 'unknown'
nmi happens but at least it should fix kgdb test cases.

Reported-by: Jason Wessel <jason.wessel@windriver.com>
Reported-by: Don Zickus <dzickus@redhat.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Acked-by: Don Zickus <dzickus@redhat.com>
Acked-by: Lin Ming <ming.m.lin@intel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <4D275E7E.3040903@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-01-09 10:40:52 +01:00

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/*
* Netburst Perfomance Events (P4, old Xeon)
*/
#ifndef PERF_EVENT_P4_H
#define PERF_EVENT_P4_H
#include <linux/cpu.h>
#include <linux/bitops.h>
/*
* NetBurst has perfomance MSRs shared between
* threads if HT is turned on, ie for both logical
* processors (mem: in turn in Atom with HT support
* perf-MSRs are not shared and every thread has its
* own perf-MSRs set)
*/
#define ARCH_P4_TOTAL_ESCR (46)
#define ARCH_P4_RESERVED_ESCR (2) /* IQ_ESCR(0,1) not always present */
#define ARCH_P4_MAX_ESCR (ARCH_P4_TOTAL_ESCR - ARCH_P4_RESERVED_ESCR)
#define ARCH_P4_MAX_CCCR (18)
#define ARCH_P4_CNTRVAL_BITS (40)
#define ARCH_P4_CNTRVAL_MASK ((1ULL << ARCH_P4_CNTRVAL_BITS) - 1)
#define P4_ESCR_EVENT_MASK 0x7e000000U
#define P4_ESCR_EVENT_SHIFT 25
#define P4_ESCR_EVENTMASK_MASK 0x01fffe00U
#define P4_ESCR_EVENTMASK_SHIFT 9
#define P4_ESCR_TAG_MASK 0x000001e0U
#define P4_ESCR_TAG_SHIFT 5
#define P4_ESCR_TAG_ENABLE 0x00000010U
#define P4_ESCR_T0_OS 0x00000008U
#define P4_ESCR_T0_USR 0x00000004U
#define P4_ESCR_T1_OS 0x00000002U
#define P4_ESCR_T1_USR 0x00000001U
#define P4_ESCR_EVENT(v) ((v) << P4_ESCR_EVENT_SHIFT)
#define P4_ESCR_EMASK(v) ((v) << P4_ESCR_EVENTMASK_SHIFT)
#define P4_ESCR_TAG(v) ((v) << P4_ESCR_TAG_SHIFT)
#define P4_CCCR_OVF 0x80000000U
#define P4_CCCR_CASCADE 0x40000000U
#define P4_CCCR_OVF_PMI_T0 0x04000000U
#define P4_CCCR_OVF_PMI_T1 0x08000000U
#define P4_CCCR_FORCE_OVF 0x02000000U
#define P4_CCCR_EDGE 0x01000000U
#define P4_CCCR_THRESHOLD_MASK 0x00f00000U
#define P4_CCCR_THRESHOLD_SHIFT 20
#define P4_CCCR_COMPLEMENT 0x00080000U
#define P4_CCCR_COMPARE 0x00040000U
#define P4_CCCR_ESCR_SELECT_MASK 0x0000e000U
#define P4_CCCR_ESCR_SELECT_SHIFT 13
#define P4_CCCR_ENABLE 0x00001000U
#define P4_CCCR_THREAD_SINGLE 0x00010000U
#define P4_CCCR_THREAD_BOTH 0x00020000U
#define P4_CCCR_THREAD_ANY 0x00030000U
#define P4_CCCR_RESERVED 0x00000fffU
#define P4_CCCR_THRESHOLD(v) ((v) << P4_CCCR_THRESHOLD_SHIFT)
#define P4_CCCR_ESEL(v) ((v) << P4_CCCR_ESCR_SELECT_SHIFT)
#define P4_GEN_ESCR_EMASK(class, name, bit) \
class##__##name = ((1 << bit) << P4_ESCR_EVENTMASK_SHIFT)
#define P4_ESCR_EMASK_BIT(class, name) class##__##name
/*
* config field is 64bit width and consists of
* HT << 63 | ESCR << 32 | CCCR
* where HT is HyperThreading bit (since ESCR
* has it reserved we may use it for own purpose)
*
* note that this is NOT the addresses of respective
* ESCR and CCCR but rather an only packed value should
* be unpacked and written to a proper addresses
*
* the base idea is to pack as much info as possible
*/
#define p4_config_pack_escr(v) (((u64)(v)) << 32)
#define p4_config_pack_cccr(v) (((u64)(v)) & 0xffffffffULL)
#define p4_config_unpack_escr(v) (((u64)(v)) >> 32)
#define p4_config_unpack_cccr(v) (((u64)(v)) & 0xffffffffULL)
#define p4_config_unpack_emask(v) \
({ \
u32 t = p4_config_unpack_escr((v)); \
t = t & P4_ESCR_EVENTMASK_MASK; \
t = t >> P4_ESCR_EVENTMASK_SHIFT; \
t; \
})
#define p4_config_unpack_event(v) \
({ \
u32 t = p4_config_unpack_escr((v)); \
t = t & P4_ESCR_EVENT_MASK; \
t = t >> P4_ESCR_EVENT_SHIFT; \
t; \
})
#define P4_CONFIG_HT_SHIFT 63
#define P4_CONFIG_HT (1ULL << P4_CONFIG_HT_SHIFT)
/*
* The bits we allow to pass for RAW events
*/
#define P4_CONFIG_MASK_ESCR \
P4_ESCR_EVENT_MASK | \
P4_ESCR_EVENTMASK_MASK | \
P4_ESCR_TAG_MASK | \
P4_ESCR_TAG_ENABLE
#define P4_CONFIG_MASK_CCCR \
P4_CCCR_EDGE | \
P4_CCCR_THRESHOLD_MASK | \
P4_CCCR_COMPLEMENT | \
P4_CCCR_COMPARE | \
P4_CCCR_THREAD_ANY | \
P4_CCCR_RESERVED
/* some dangerous bits are reserved for kernel internals */
#define P4_CONFIG_MASK \
(p4_config_pack_escr(P4_CONFIG_MASK_ESCR)) | \
(p4_config_pack_cccr(P4_CONFIG_MASK_CCCR))
static inline bool p4_is_event_cascaded(u64 config)
{
u32 cccr = p4_config_unpack_cccr(config);
return !!(cccr & P4_CCCR_CASCADE);
}
static inline int p4_ht_config_thread(u64 config)
{
return !!(config & P4_CONFIG_HT);
}
static inline u64 p4_set_ht_bit(u64 config)
{
return config | P4_CONFIG_HT;
}
static inline u64 p4_clear_ht_bit(u64 config)
{
return config & ~P4_CONFIG_HT;
}
static inline int p4_ht_active(void)
{
#ifdef CONFIG_SMP
return smp_num_siblings > 1;
#endif
return 0;
}
static inline int p4_ht_thread(int cpu)
{
#ifdef CONFIG_SMP
if (smp_num_siblings == 2)
return cpu != cpumask_first(__get_cpu_var(cpu_sibling_map));
#endif
return 0;
}
static inline int p4_should_swap_ts(u64 config, int cpu)
{
return p4_ht_config_thread(config) ^ p4_ht_thread(cpu);
}
static inline u32 p4_default_cccr_conf(int cpu)
{
/*
* Note that P4_CCCR_THREAD_ANY is "required" on
* non-HT machines (on HT machines we count TS events
* regardless the state of second logical processor
*/
u32 cccr = P4_CCCR_THREAD_ANY;
if (!p4_ht_thread(cpu))
cccr |= P4_CCCR_OVF_PMI_T0;
else
cccr |= P4_CCCR_OVF_PMI_T1;
return cccr;
}
static inline u32 p4_default_escr_conf(int cpu, int exclude_os, int exclude_usr)
{
u32 escr = 0;
if (!p4_ht_thread(cpu)) {
if (!exclude_os)
escr |= P4_ESCR_T0_OS;
if (!exclude_usr)
escr |= P4_ESCR_T0_USR;
} else {
if (!exclude_os)
escr |= P4_ESCR_T1_OS;
if (!exclude_usr)
escr |= P4_ESCR_T1_USR;
}
return escr;
}
/*
* This are the events which should be used in "Event Select"
* field of ESCR register, they are like unique keys which allow
* the kernel to determinate which CCCR and COUNTER should be
* used to track an event
*/
enum P4_EVENTS {
P4_EVENT_TC_DELIVER_MODE,
P4_EVENT_BPU_FETCH_REQUEST,
P4_EVENT_ITLB_REFERENCE,
P4_EVENT_MEMORY_CANCEL,
P4_EVENT_MEMORY_COMPLETE,
P4_EVENT_LOAD_PORT_REPLAY,
P4_EVENT_STORE_PORT_REPLAY,
P4_EVENT_MOB_LOAD_REPLAY,
P4_EVENT_PAGE_WALK_TYPE,
P4_EVENT_BSQ_CACHE_REFERENCE,
P4_EVENT_IOQ_ALLOCATION,
P4_EVENT_IOQ_ACTIVE_ENTRIES,
P4_EVENT_FSB_DATA_ACTIVITY,
P4_EVENT_BSQ_ALLOCATION,
P4_EVENT_BSQ_ACTIVE_ENTRIES,
P4_EVENT_SSE_INPUT_ASSIST,
P4_EVENT_PACKED_SP_UOP,
P4_EVENT_PACKED_DP_UOP,
P4_EVENT_SCALAR_SP_UOP,
P4_EVENT_SCALAR_DP_UOP,
P4_EVENT_64BIT_MMX_UOP,
P4_EVENT_128BIT_MMX_UOP,
P4_EVENT_X87_FP_UOP,
P4_EVENT_TC_MISC,
P4_EVENT_GLOBAL_POWER_EVENTS,
P4_EVENT_TC_MS_XFER,
P4_EVENT_UOP_QUEUE_WRITES,
P4_EVENT_RETIRED_MISPRED_BRANCH_TYPE,
P4_EVENT_RETIRED_BRANCH_TYPE,
P4_EVENT_RESOURCE_STALL,
P4_EVENT_WC_BUFFER,
P4_EVENT_B2B_CYCLES,
P4_EVENT_BNR,
P4_EVENT_SNOOP,
P4_EVENT_RESPONSE,
P4_EVENT_FRONT_END_EVENT,
P4_EVENT_EXECUTION_EVENT,
P4_EVENT_REPLAY_EVENT,
P4_EVENT_INSTR_RETIRED,
P4_EVENT_UOPS_RETIRED,
P4_EVENT_UOP_TYPE,
P4_EVENT_BRANCH_RETIRED,
P4_EVENT_MISPRED_BRANCH_RETIRED,
P4_EVENT_X87_ASSIST,
P4_EVENT_MACHINE_CLEAR,
P4_EVENT_INSTR_COMPLETED,
};
#define P4_OPCODE(event) event##_OPCODE
#define P4_OPCODE_ESEL(opcode) ((opcode & 0x00ff) >> 0)
#define P4_OPCODE_EVNT(opcode) ((opcode & 0xff00) >> 8)
#define P4_OPCODE_PACK(event, sel) (((event) << 8) | sel)
/*
* Comments below the event represent ESCR restriction
* for this event and counter index per ESCR
*
* MSR_P4_IQ_ESCR0 and MSR_P4_IQ_ESCR1 are available only on early
* processor builds (family 0FH, models 01H-02H). These MSRs
* are not available on later versions, so that we don't use
* them completely
*
* Also note that CCCR1 do not have P4_CCCR_ENABLE bit properly
* working so that we should not use this CCCR and respective
* counter as result
*/
enum P4_EVENT_OPCODES {
P4_OPCODE(P4_EVENT_TC_DELIVER_MODE) = P4_OPCODE_PACK(0x01, 0x01),
/*
* MSR_P4_TC_ESCR0: 4, 5
* MSR_P4_TC_ESCR1: 6, 7
*/
P4_OPCODE(P4_EVENT_BPU_FETCH_REQUEST) = P4_OPCODE_PACK(0x03, 0x00),
/*
* MSR_P4_BPU_ESCR0: 0, 1
* MSR_P4_BPU_ESCR1: 2, 3
*/
P4_OPCODE(P4_EVENT_ITLB_REFERENCE) = P4_OPCODE_PACK(0x18, 0x03),
/*
* MSR_P4_ITLB_ESCR0: 0, 1
* MSR_P4_ITLB_ESCR1: 2, 3
*/
P4_OPCODE(P4_EVENT_MEMORY_CANCEL) = P4_OPCODE_PACK(0x02, 0x05),
/*
* MSR_P4_DAC_ESCR0: 8, 9
* MSR_P4_DAC_ESCR1: 10, 11
*/
P4_OPCODE(P4_EVENT_MEMORY_COMPLETE) = P4_OPCODE_PACK(0x08, 0x02),
/*
* MSR_P4_SAAT_ESCR0: 8, 9
* MSR_P4_SAAT_ESCR1: 10, 11
*/
P4_OPCODE(P4_EVENT_LOAD_PORT_REPLAY) = P4_OPCODE_PACK(0x04, 0x02),
/*
* MSR_P4_SAAT_ESCR0: 8, 9
* MSR_P4_SAAT_ESCR1: 10, 11
*/
P4_OPCODE(P4_EVENT_STORE_PORT_REPLAY) = P4_OPCODE_PACK(0x05, 0x02),
/*
* MSR_P4_SAAT_ESCR0: 8, 9
* MSR_P4_SAAT_ESCR1: 10, 11
*/
P4_OPCODE(P4_EVENT_MOB_LOAD_REPLAY) = P4_OPCODE_PACK(0x03, 0x02),
/*
* MSR_P4_MOB_ESCR0: 0, 1
* MSR_P4_MOB_ESCR1: 2, 3
*/
P4_OPCODE(P4_EVENT_PAGE_WALK_TYPE) = P4_OPCODE_PACK(0x01, 0x04),
/*
* MSR_P4_PMH_ESCR0: 0, 1
* MSR_P4_PMH_ESCR1: 2, 3
*/
P4_OPCODE(P4_EVENT_BSQ_CACHE_REFERENCE) = P4_OPCODE_PACK(0x0c, 0x07),
/*
* MSR_P4_BSU_ESCR0: 0, 1
* MSR_P4_BSU_ESCR1: 2, 3
*/
P4_OPCODE(P4_EVENT_IOQ_ALLOCATION) = P4_OPCODE_PACK(0x03, 0x06),
/*
* MSR_P4_FSB_ESCR0: 0, 1
* MSR_P4_FSB_ESCR1: 2, 3
*/
P4_OPCODE(P4_EVENT_IOQ_ACTIVE_ENTRIES) = P4_OPCODE_PACK(0x1a, 0x06),
/*
* MSR_P4_FSB_ESCR1: 2, 3
*/
P4_OPCODE(P4_EVENT_FSB_DATA_ACTIVITY) = P4_OPCODE_PACK(0x17, 0x06),
/*
* MSR_P4_FSB_ESCR0: 0, 1
* MSR_P4_FSB_ESCR1: 2, 3
*/
P4_OPCODE(P4_EVENT_BSQ_ALLOCATION) = P4_OPCODE_PACK(0x05, 0x07),
/*
* MSR_P4_BSU_ESCR0: 0, 1
*/
P4_OPCODE(P4_EVENT_BSQ_ACTIVE_ENTRIES) = P4_OPCODE_PACK(0x06, 0x07),
/*
* NOTE: no ESCR name in docs, it's guessed
* MSR_P4_BSU_ESCR1: 2, 3
*/
P4_OPCODE(P4_EVENT_SSE_INPUT_ASSIST) = P4_OPCODE_PACK(0x34, 0x01),
/*
* MSR_P4_FIRM_ESCR0: 8, 9
* MSR_P4_FIRM_ESCR1: 10, 11
*/
P4_OPCODE(P4_EVENT_PACKED_SP_UOP) = P4_OPCODE_PACK(0x08, 0x01),
/*
* MSR_P4_FIRM_ESCR0: 8, 9
* MSR_P4_FIRM_ESCR1: 10, 11
*/
P4_OPCODE(P4_EVENT_PACKED_DP_UOP) = P4_OPCODE_PACK(0x0c, 0x01),
/*
* MSR_P4_FIRM_ESCR0: 8, 9
* MSR_P4_FIRM_ESCR1: 10, 11
*/
P4_OPCODE(P4_EVENT_SCALAR_SP_UOP) = P4_OPCODE_PACK(0x0a, 0x01),
/*
* MSR_P4_FIRM_ESCR0: 8, 9
* MSR_P4_FIRM_ESCR1: 10, 11
*/
P4_OPCODE(P4_EVENT_SCALAR_DP_UOP) = P4_OPCODE_PACK(0x0e, 0x01),
/*
* MSR_P4_FIRM_ESCR0: 8, 9
* MSR_P4_FIRM_ESCR1: 10, 11
*/
P4_OPCODE(P4_EVENT_64BIT_MMX_UOP) = P4_OPCODE_PACK(0x02, 0x01),
/*
* MSR_P4_FIRM_ESCR0: 8, 9
* MSR_P4_FIRM_ESCR1: 10, 11
*/
P4_OPCODE(P4_EVENT_128BIT_MMX_UOP) = P4_OPCODE_PACK(0x1a, 0x01),
/*
* MSR_P4_FIRM_ESCR0: 8, 9
* MSR_P4_FIRM_ESCR1: 10, 11
*/
P4_OPCODE(P4_EVENT_X87_FP_UOP) = P4_OPCODE_PACK(0x04, 0x01),
/*
* MSR_P4_FIRM_ESCR0: 8, 9
* MSR_P4_FIRM_ESCR1: 10, 11
*/
P4_OPCODE(P4_EVENT_TC_MISC) = P4_OPCODE_PACK(0x06, 0x01),
/*
* MSR_P4_TC_ESCR0: 4, 5
* MSR_P4_TC_ESCR1: 6, 7
*/
P4_OPCODE(P4_EVENT_GLOBAL_POWER_EVENTS) = P4_OPCODE_PACK(0x13, 0x06),
/*
* MSR_P4_FSB_ESCR0: 0, 1
* MSR_P4_FSB_ESCR1: 2, 3
*/
P4_OPCODE(P4_EVENT_TC_MS_XFER) = P4_OPCODE_PACK(0x05, 0x00),
/*
* MSR_P4_MS_ESCR0: 4, 5
* MSR_P4_MS_ESCR1: 6, 7
*/
P4_OPCODE(P4_EVENT_UOP_QUEUE_WRITES) = P4_OPCODE_PACK(0x09, 0x00),
/*
* MSR_P4_MS_ESCR0: 4, 5
* MSR_P4_MS_ESCR1: 6, 7
*/
P4_OPCODE(P4_EVENT_RETIRED_MISPRED_BRANCH_TYPE) = P4_OPCODE_PACK(0x05, 0x02),
/*
* MSR_P4_TBPU_ESCR0: 4, 5
* MSR_P4_TBPU_ESCR1: 6, 7
*/
P4_OPCODE(P4_EVENT_RETIRED_BRANCH_TYPE) = P4_OPCODE_PACK(0x04, 0x02),
/*
* MSR_P4_TBPU_ESCR0: 4, 5
* MSR_P4_TBPU_ESCR1: 6, 7
*/
P4_OPCODE(P4_EVENT_RESOURCE_STALL) = P4_OPCODE_PACK(0x01, 0x01),
/*
* MSR_P4_ALF_ESCR0: 12, 13, 16
* MSR_P4_ALF_ESCR1: 14, 15, 17
*/
P4_OPCODE(P4_EVENT_WC_BUFFER) = P4_OPCODE_PACK(0x05, 0x05),
/*
* MSR_P4_DAC_ESCR0: 8, 9
* MSR_P4_DAC_ESCR1: 10, 11
*/
P4_OPCODE(P4_EVENT_B2B_CYCLES) = P4_OPCODE_PACK(0x16, 0x03),
/*
* MSR_P4_FSB_ESCR0: 0, 1
* MSR_P4_FSB_ESCR1: 2, 3
*/
P4_OPCODE(P4_EVENT_BNR) = P4_OPCODE_PACK(0x08, 0x03),
/*
* MSR_P4_FSB_ESCR0: 0, 1
* MSR_P4_FSB_ESCR1: 2, 3
*/
P4_OPCODE(P4_EVENT_SNOOP) = P4_OPCODE_PACK(0x06, 0x03),
/*
* MSR_P4_FSB_ESCR0: 0, 1
* MSR_P4_FSB_ESCR1: 2, 3
*/
P4_OPCODE(P4_EVENT_RESPONSE) = P4_OPCODE_PACK(0x04, 0x03),
/*
* MSR_P4_FSB_ESCR0: 0, 1
* MSR_P4_FSB_ESCR1: 2, 3
*/
P4_OPCODE(P4_EVENT_FRONT_END_EVENT) = P4_OPCODE_PACK(0x08, 0x05),
/*
* MSR_P4_CRU_ESCR2: 12, 13, 16
* MSR_P4_CRU_ESCR3: 14, 15, 17
*/
P4_OPCODE(P4_EVENT_EXECUTION_EVENT) = P4_OPCODE_PACK(0x0c, 0x05),
/*
* MSR_P4_CRU_ESCR2: 12, 13, 16
* MSR_P4_CRU_ESCR3: 14, 15, 17
*/
P4_OPCODE(P4_EVENT_REPLAY_EVENT) = P4_OPCODE_PACK(0x09, 0x05),
/*
* MSR_P4_CRU_ESCR2: 12, 13, 16
* MSR_P4_CRU_ESCR3: 14, 15, 17
*/
P4_OPCODE(P4_EVENT_INSTR_RETIRED) = P4_OPCODE_PACK(0x02, 0x04),
/*
* MSR_P4_CRU_ESCR0: 12, 13, 16
* MSR_P4_CRU_ESCR1: 14, 15, 17
*/
P4_OPCODE(P4_EVENT_UOPS_RETIRED) = P4_OPCODE_PACK(0x01, 0x04),
/*
* MSR_P4_CRU_ESCR0: 12, 13, 16
* MSR_P4_CRU_ESCR1: 14, 15, 17
*/
P4_OPCODE(P4_EVENT_UOP_TYPE) = P4_OPCODE_PACK(0x02, 0x02),
/*
* MSR_P4_RAT_ESCR0: 12, 13, 16
* MSR_P4_RAT_ESCR1: 14, 15, 17
*/
P4_OPCODE(P4_EVENT_BRANCH_RETIRED) = P4_OPCODE_PACK(0x06, 0x05),
/*
* MSR_P4_CRU_ESCR2: 12, 13, 16
* MSR_P4_CRU_ESCR3: 14, 15, 17
*/
P4_OPCODE(P4_EVENT_MISPRED_BRANCH_RETIRED) = P4_OPCODE_PACK(0x03, 0x04),
/*
* MSR_P4_CRU_ESCR0: 12, 13, 16
* MSR_P4_CRU_ESCR1: 14, 15, 17
*/
P4_OPCODE(P4_EVENT_X87_ASSIST) = P4_OPCODE_PACK(0x03, 0x05),
/*
* MSR_P4_CRU_ESCR2: 12, 13, 16
* MSR_P4_CRU_ESCR3: 14, 15, 17
*/
P4_OPCODE(P4_EVENT_MACHINE_CLEAR) = P4_OPCODE_PACK(0x02, 0x05),
/*
* MSR_P4_CRU_ESCR2: 12, 13, 16
* MSR_P4_CRU_ESCR3: 14, 15, 17
*/
P4_OPCODE(P4_EVENT_INSTR_COMPLETED) = P4_OPCODE_PACK(0x07, 0x04),
/*
* MSR_P4_CRU_ESCR0: 12, 13, 16
* MSR_P4_CRU_ESCR1: 14, 15, 17
*/
};
/*
* a caller should use P4_ESCR_EMASK_NAME helper to
* pick the EventMask needed, for example
*
* P4_ESCR_EMASK_BIT(P4_EVENT_TC_DELIVER_MODE, DD)
*/
enum P4_ESCR_EMASKS {
P4_GEN_ESCR_EMASK(P4_EVENT_TC_DELIVER_MODE, DD, 0),
P4_GEN_ESCR_EMASK(P4_EVENT_TC_DELIVER_MODE, DB, 1),
P4_GEN_ESCR_EMASK(P4_EVENT_TC_DELIVER_MODE, DI, 2),
P4_GEN_ESCR_EMASK(P4_EVENT_TC_DELIVER_MODE, BD, 3),
P4_GEN_ESCR_EMASK(P4_EVENT_TC_DELIVER_MODE, BB, 4),
P4_GEN_ESCR_EMASK(P4_EVENT_TC_DELIVER_MODE, BI, 5),
P4_GEN_ESCR_EMASK(P4_EVENT_TC_DELIVER_MODE, ID, 6),
P4_GEN_ESCR_EMASK(P4_EVENT_BPU_FETCH_REQUEST, TCMISS, 0),
P4_GEN_ESCR_EMASK(P4_EVENT_ITLB_REFERENCE, HIT, 0),
P4_GEN_ESCR_EMASK(P4_EVENT_ITLB_REFERENCE, MISS, 1),
P4_GEN_ESCR_EMASK(P4_EVENT_ITLB_REFERENCE, HIT_UK, 2),
P4_GEN_ESCR_EMASK(P4_EVENT_MEMORY_CANCEL, ST_RB_FULL, 2),
P4_GEN_ESCR_EMASK(P4_EVENT_MEMORY_CANCEL, 64K_CONF, 3),
P4_GEN_ESCR_EMASK(P4_EVENT_MEMORY_COMPLETE, LSC, 0),
P4_GEN_ESCR_EMASK(P4_EVENT_MEMORY_COMPLETE, SSC, 1),
P4_GEN_ESCR_EMASK(P4_EVENT_LOAD_PORT_REPLAY, SPLIT_LD, 1),
P4_GEN_ESCR_EMASK(P4_EVENT_STORE_PORT_REPLAY, SPLIT_ST, 1),
P4_GEN_ESCR_EMASK(P4_EVENT_MOB_LOAD_REPLAY, NO_STA, 1),
P4_GEN_ESCR_EMASK(P4_EVENT_MOB_LOAD_REPLAY, NO_STD, 3),
P4_GEN_ESCR_EMASK(P4_EVENT_MOB_LOAD_REPLAY, PARTIAL_DATA, 4),
P4_GEN_ESCR_EMASK(P4_EVENT_MOB_LOAD_REPLAY, UNALGN_ADDR, 5),
P4_GEN_ESCR_EMASK(P4_EVENT_PAGE_WALK_TYPE, DTMISS, 0),
P4_GEN_ESCR_EMASK(P4_EVENT_PAGE_WALK_TYPE, ITMISS, 1),
P4_GEN_ESCR_EMASK(P4_EVENT_BSQ_CACHE_REFERENCE, RD_2ndL_HITS, 0),
P4_GEN_ESCR_EMASK(P4_EVENT_BSQ_CACHE_REFERENCE, RD_2ndL_HITE, 1),
P4_GEN_ESCR_EMASK(P4_EVENT_BSQ_CACHE_REFERENCE, RD_2ndL_HITM, 2),
P4_GEN_ESCR_EMASK(P4_EVENT_BSQ_CACHE_REFERENCE, RD_3rdL_HITS, 3),
P4_GEN_ESCR_EMASK(P4_EVENT_BSQ_CACHE_REFERENCE, RD_3rdL_HITE, 4),
P4_GEN_ESCR_EMASK(P4_EVENT_BSQ_CACHE_REFERENCE, RD_3rdL_HITM, 5),
P4_GEN_ESCR_EMASK(P4_EVENT_BSQ_CACHE_REFERENCE, RD_2ndL_MISS, 8),
P4_GEN_ESCR_EMASK(P4_EVENT_BSQ_CACHE_REFERENCE, RD_3rdL_MISS, 9),
P4_GEN_ESCR_EMASK(P4_EVENT_BSQ_CACHE_REFERENCE, WR_2ndL_MISS, 10),
P4_GEN_ESCR_EMASK(P4_EVENT_IOQ_ALLOCATION, DEFAULT, 0),
P4_GEN_ESCR_EMASK(P4_EVENT_IOQ_ALLOCATION, ALL_READ, 5),
P4_GEN_ESCR_EMASK(P4_EVENT_IOQ_ALLOCATION, ALL_WRITE, 6),
P4_GEN_ESCR_EMASK(P4_EVENT_IOQ_ALLOCATION, MEM_UC, 7),
P4_GEN_ESCR_EMASK(P4_EVENT_IOQ_ALLOCATION, MEM_WC, 8),
P4_GEN_ESCR_EMASK(P4_EVENT_IOQ_ALLOCATION, MEM_WT, 9),
P4_GEN_ESCR_EMASK(P4_EVENT_IOQ_ALLOCATION, MEM_WP, 10),
P4_GEN_ESCR_EMASK(P4_EVENT_IOQ_ALLOCATION, MEM_WB, 11),
P4_GEN_ESCR_EMASK(P4_EVENT_IOQ_ALLOCATION, OWN, 13),
P4_GEN_ESCR_EMASK(P4_EVENT_IOQ_ALLOCATION, OTHER, 14),
P4_GEN_ESCR_EMASK(P4_EVENT_IOQ_ALLOCATION, PREFETCH, 15),
P4_GEN_ESCR_EMASK(P4_EVENT_IOQ_ACTIVE_ENTRIES, DEFAULT, 0),
P4_GEN_ESCR_EMASK(P4_EVENT_IOQ_ACTIVE_ENTRIES, ALL_READ, 5),
P4_GEN_ESCR_EMASK(P4_EVENT_IOQ_ACTIVE_ENTRIES, ALL_WRITE, 6),
P4_GEN_ESCR_EMASK(P4_EVENT_IOQ_ACTIVE_ENTRIES, MEM_UC, 7),
P4_GEN_ESCR_EMASK(P4_EVENT_IOQ_ACTIVE_ENTRIES, MEM_WC, 8),
P4_GEN_ESCR_EMASK(P4_EVENT_IOQ_ACTIVE_ENTRIES, MEM_WT, 9),
P4_GEN_ESCR_EMASK(P4_EVENT_IOQ_ACTIVE_ENTRIES, MEM_WP, 10),
P4_GEN_ESCR_EMASK(P4_EVENT_IOQ_ACTIVE_ENTRIES, MEM_WB, 11),
P4_GEN_ESCR_EMASK(P4_EVENT_IOQ_ACTIVE_ENTRIES, OWN, 13),
P4_GEN_ESCR_EMASK(P4_EVENT_IOQ_ACTIVE_ENTRIES, OTHER, 14),
P4_GEN_ESCR_EMASK(P4_EVENT_IOQ_ACTIVE_ENTRIES, PREFETCH, 15),
P4_GEN_ESCR_EMASK(P4_EVENT_FSB_DATA_ACTIVITY, DRDY_DRV, 0),
P4_GEN_ESCR_EMASK(P4_EVENT_FSB_DATA_ACTIVITY, DRDY_OWN, 1),
P4_GEN_ESCR_EMASK(P4_EVENT_FSB_DATA_ACTIVITY, DRDY_OTHER, 2),
P4_GEN_ESCR_EMASK(P4_EVENT_FSB_DATA_ACTIVITY, DBSY_DRV, 3),
P4_GEN_ESCR_EMASK(P4_EVENT_FSB_DATA_ACTIVITY, DBSY_OWN, 4),
P4_GEN_ESCR_EMASK(P4_EVENT_FSB_DATA_ACTIVITY, DBSY_OTHER, 5),
P4_GEN_ESCR_EMASK(P4_EVENT_BSQ_ALLOCATION, REQ_TYPE0, 0),
P4_GEN_ESCR_EMASK(P4_EVENT_BSQ_ALLOCATION, REQ_TYPE1, 1),
P4_GEN_ESCR_EMASK(P4_EVENT_BSQ_ALLOCATION, REQ_LEN0, 2),
P4_GEN_ESCR_EMASK(P4_EVENT_BSQ_ALLOCATION, REQ_LEN1, 3),
P4_GEN_ESCR_EMASK(P4_EVENT_BSQ_ALLOCATION, REQ_IO_TYPE, 5),
P4_GEN_ESCR_EMASK(P4_EVENT_BSQ_ALLOCATION, REQ_LOCK_TYPE, 6),
P4_GEN_ESCR_EMASK(P4_EVENT_BSQ_ALLOCATION, REQ_CACHE_TYPE, 7),
P4_GEN_ESCR_EMASK(P4_EVENT_BSQ_ALLOCATION, REQ_SPLIT_TYPE, 8),
P4_GEN_ESCR_EMASK(P4_EVENT_BSQ_ALLOCATION, REQ_DEM_TYPE, 9),
P4_GEN_ESCR_EMASK(P4_EVENT_BSQ_ALLOCATION, REQ_ORD_TYPE, 10),
P4_GEN_ESCR_EMASK(P4_EVENT_BSQ_ALLOCATION, MEM_TYPE0, 11),
P4_GEN_ESCR_EMASK(P4_EVENT_BSQ_ALLOCATION, MEM_TYPE1, 12),
P4_GEN_ESCR_EMASK(P4_EVENT_BSQ_ALLOCATION, MEM_TYPE2, 13),
P4_GEN_ESCR_EMASK(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_TYPE0, 0),
P4_GEN_ESCR_EMASK(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_TYPE1, 1),
P4_GEN_ESCR_EMASK(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_LEN0, 2),
P4_GEN_ESCR_EMASK(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_LEN1, 3),
P4_GEN_ESCR_EMASK(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_IO_TYPE, 5),
P4_GEN_ESCR_EMASK(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_LOCK_TYPE, 6),
P4_GEN_ESCR_EMASK(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_CACHE_TYPE, 7),
P4_GEN_ESCR_EMASK(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_SPLIT_TYPE, 8),
P4_GEN_ESCR_EMASK(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_DEM_TYPE, 9),
P4_GEN_ESCR_EMASK(P4_EVENT_BSQ_ACTIVE_ENTRIES, REQ_ORD_TYPE, 10),
P4_GEN_ESCR_EMASK(P4_EVENT_BSQ_ACTIVE_ENTRIES, MEM_TYPE0, 11),
P4_GEN_ESCR_EMASK(P4_EVENT_BSQ_ACTIVE_ENTRIES, MEM_TYPE1, 12),
P4_GEN_ESCR_EMASK(P4_EVENT_BSQ_ACTIVE_ENTRIES, MEM_TYPE2, 13),
P4_GEN_ESCR_EMASK(P4_EVENT_SSE_INPUT_ASSIST, ALL, 15),
P4_GEN_ESCR_EMASK(P4_EVENT_PACKED_SP_UOP, ALL, 15),
P4_GEN_ESCR_EMASK(P4_EVENT_PACKED_DP_UOP, ALL, 15),
P4_GEN_ESCR_EMASK(P4_EVENT_SCALAR_SP_UOP, ALL, 15),
P4_GEN_ESCR_EMASK(P4_EVENT_SCALAR_DP_UOP, ALL, 15),
P4_GEN_ESCR_EMASK(P4_EVENT_64BIT_MMX_UOP, ALL, 15),
P4_GEN_ESCR_EMASK(P4_EVENT_128BIT_MMX_UOP, ALL, 15),
P4_GEN_ESCR_EMASK(P4_EVENT_X87_FP_UOP, ALL, 15),
P4_GEN_ESCR_EMASK(P4_EVENT_TC_MISC, FLUSH, 4),
P4_GEN_ESCR_EMASK(P4_EVENT_GLOBAL_POWER_EVENTS, RUNNING, 0),
P4_GEN_ESCR_EMASK(P4_EVENT_TC_MS_XFER, CISC, 0),
P4_GEN_ESCR_EMASK(P4_EVENT_UOP_QUEUE_WRITES, FROM_TC_BUILD, 0),
P4_GEN_ESCR_EMASK(P4_EVENT_UOP_QUEUE_WRITES, FROM_TC_DELIVER, 1),
P4_GEN_ESCR_EMASK(P4_EVENT_UOP_QUEUE_WRITES, FROM_ROM, 2),
P4_GEN_ESCR_EMASK(P4_EVENT_RETIRED_MISPRED_BRANCH_TYPE, CONDITIONAL, 1),
P4_GEN_ESCR_EMASK(P4_EVENT_RETIRED_MISPRED_BRANCH_TYPE, CALL, 2),
P4_GEN_ESCR_EMASK(P4_EVENT_RETIRED_MISPRED_BRANCH_TYPE, RETURN, 3),
P4_GEN_ESCR_EMASK(P4_EVENT_RETIRED_MISPRED_BRANCH_TYPE, INDIRECT, 4),
P4_GEN_ESCR_EMASK(P4_EVENT_RETIRED_BRANCH_TYPE, CONDITIONAL, 1),
P4_GEN_ESCR_EMASK(P4_EVENT_RETIRED_BRANCH_TYPE, CALL, 2),
P4_GEN_ESCR_EMASK(P4_EVENT_RETIRED_BRANCH_TYPE, RETURN, 3),
P4_GEN_ESCR_EMASK(P4_EVENT_RETIRED_BRANCH_TYPE, INDIRECT, 4),
P4_GEN_ESCR_EMASK(P4_EVENT_RESOURCE_STALL, SBFULL, 5),
P4_GEN_ESCR_EMASK(P4_EVENT_WC_BUFFER, WCB_EVICTS, 0),
P4_GEN_ESCR_EMASK(P4_EVENT_WC_BUFFER, WCB_FULL_EVICTS, 1),
P4_GEN_ESCR_EMASK(P4_EVENT_FRONT_END_EVENT, NBOGUS, 0),
P4_GEN_ESCR_EMASK(P4_EVENT_FRONT_END_EVENT, BOGUS, 1),
P4_GEN_ESCR_EMASK(P4_EVENT_EXECUTION_EVENT, NBOGUS0, 0),
P4_GEN_ESCR_EMASK(P4_EVENT_EXECUTION_EVENT, NBOGUS1, 1),
P4_GEN_ESCR_EMASK(P4_EVENT_EXECUTION_EVENT, NBOGUS2, 2),
P4_GEN_ESCR_EMASK(P4_EVENT_EXECUTION_EVENT, NBOGUS3, 3),
P4_GEN_ESCR_EMASK(P4_EVENT_EXECUTION_EVENT, BOGUS0, 4),
P4_GEN_ESCR_EMASK(P4_EVENT_EXECUTION_EVENT, BOGUS1, 5),
P4_GEN_ESCR_EMASK(P4_EVENT_EXECUTION_EVENT, BOGUS2, 6),
P4_GEN_ESCR_EMASK(P4_EVENT_EXECUTION_EVENT, BOGUS3, 7),
P4_GEN_ESCR_EMASK(P4_EVENT_REPLAY_EVENT, NBOGUS, 0),
P4_GEN_ESCR_EMASK(P4_EVENT_REPLAY_EVENT, BOGUS, 1),
P4_GEN_ESCR_EMASK(P4_EVENT_INSTR_RETIRED, NBOGUSNTAG, 0),
P4_GEN_ESCR_EMASK(P4_EVENT_INSTR_RETIRED, NBOGUSTAG, 1),
P4_GEN_ESCR_EMASK(P4_EVENT_INSTR_RETIRED, BOGUSNTAG, 2),
P4_GEN_ESCR_EMASK(P4_EVENT_INSTR_RETIRED, BOGUSTAG, 3),
P4_GEN_ESCR_EMASK(P4_EVENT_UOPS_RETIRED, NBOGUS, 0),
P4_GEN_ESCR_EMASK(P4_EVENT_UOPS_RETIRED, BOGUS, 1),
P4_GEN_ESCR_EMASK(P4_EVENT_UOP_TYPE, TAGLOADS, 1),
P4_GEN_ESCR_EMASK(P4_EVENT_UOP_TYPE, TAGSTORES, 2),
P4_GEN_ESCR_EMASK(P4_EVENT_BRANCH_RETIRED, MMNP, 0),
P4_GEN_ESCR_EMASK(P4_EVENT_BRANCH_RETIRED, MMNM, 1),
P4_GEN_ESCR_EMASK(P4_EVENT_BRANCH_RETIRED, MMTP, 2),
P4_GEN_ESCR_EMASK(P4_EVENT_BRANCH_RETIRED, MMTM, 3),
P4_GEN_ESCR_EMASK(P4_EVENT_MISPRED_BRANCH_RETIRED, NBOGUS, 0),
P4_GEN_ESCR_EMASK(P4_EVENT_X87_ASSIST, FPSU, 0),
P4_GEN_ESCR_EMASK(P4_EVENT_X87_ASSIST, FPSO, 1),
P4_GEN_ESCR_EMASK(P4_EVENT_X87_ASSIST, POAO, 2),
P4_GEN_ESCR_EMASK(P4_EVENT_X87_ASSIST, POAU, 3),
P4_GEN_ESCR_EMASK(P4_EVENT_X87_ASSIST, PREA, 4),
P4_GEN_ESCR_EMASK(P4_EVENT_MACHINE_CLEAR, CLEAR, 0),
P4_GEN_ESCR_EMASK(P4_EVENT_MACHINE_CLEAR, MOCLEAR, 1),
P4_GEN_ESCR_EMASK(P4_EVENT_MACHINE_CLEAR, SMCLEAR, 2),
P4_GEN_ESCR_EMASK(P4_EVENT_INSTR_COMPLETED, NBOGUS, 0),
P4_GEN_ESCR_EMASK(P4_EVENT_INSTR_COMPLETED, BOGUS, 1),
};
/*
* Note we have UOP and PEBS bits reserved for now
* just in case if we will need them once
*/
#define P4_PEBS_CONFIG_ENABLE (1 << 7)
#define P4_PEBS_CONFIG_UOP_TAG (1 << 8)
#define P4_PEBS_CONFIG_METRIC_MASK 0x3f
#define P4_PEBS_CONFIG_MASK 0xff
/*
* mem: Only counters MSR_IQ_COUNTER4 (16) and
* MSR_IQ_COUNTER5 (17) are allowed for PEBS sampling
*/
#define P4_PEBS_ENABLE 0x02000000U
#define P4_PEBS_ENABLE_UOP_TAG 0x01000000U
#define p4_config_unpack_metric(v) (((u64)(v)) & P4_PEBS_CONFIG_METRIC_MASK)
#define p4_config_unpack_pebs(v) (((u64)(v)) & P4_PEBS_CONFIG_MASK)
#define p4_config_pebs_has(v, mask) (p4_config_unpack_pebs(v) & (mask))
enum P4_PEBS_METRIC {
P4_PEBS_METRIC__none,
P4_PEBS_METRIC__1stl_cache_load_miss_retired,
P4_PEBS_METRIC__2ndl_cache_load_miss_retired,
P4_PEBS_METRIC__dtlb_load_miss_retired,
P4_PEBS_METRIC__dtlb_store_miss_retired,
P4_PEBS_METRIC__dtlb_all_miss_retired,
P4_PEBS_METRIC__tagged_mispred_branch,
P4_PEBS_METRIC__mob_load_replay_retired,
P4_PEBS_METRIC__split_load_retired,
P4_PEBS_METRIC__split_store_retired,
P4_PEBS_METRIC__max
};
/*
* Notes on internal configuration of ESCR+CCCR tuples
*
* Since P4 has quite the different architecture of
* performance registers in compare with "architectural"
* once and we have on 64 bits to keep configuration
* of performance event, the following trick is used.
*
* 1) Since both ESCR and CCCR registers have only low
* 32 bits valuable, we pack them into a single 64 bit
* configuration. Low 32 bits of such config correspond
* to low 32 bits of CCCR register and high 32 bits
* correspond to low 32 bits of ESCR register.
*
* 2) The meaning of every bit of such config field can
* be found in Intel SDM but it should be noted that
* we "borrow" some reserved bits for own usage and
* clean them or set to a proper value when we do
* a real write to hardware registers.
*
* 3) The format of bits of config is the following
* and should be either 0 or set to some predefined
* values:
*
* Low 32 bits
* -----------
* 0-6: P4_PEBS_METRIC enum
* 7-11: reserved
* 12: reserved (Enable)
* 13-15: reserved (ESCR select)
* 16-17: Active Thread
* 18: Compare
* 19: Complement
* 20-23: Threshold
* 24: Edge
* 25: reserved (FORCE_OVF)
* 26: reserved (OVF_PMI_T0)
* 27: reserved (OVF_PMI_T1)
* 28-29: reserved
* 30: reserved (Cascade)
* 31: reserved (OVF)
*
* High 32 bits
* ------------
* 0: reserved (T1_USR)
* 1: reserved (T1_OS)
* 2: reserved (T0_USR)
* 3: reserved (T0_OS)
* 4: Tag Enable
* 5-8: Tag Value
* 9-24: Event Mask (may use P4_ESCR_EMASK_BIT helper)
* 25-30: enum P4_EVENTS
* 31: reserved (HT thread)
*/
#endif /* PERF_EVENT_P4_H */
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