perf report: Add tools/arch/x86/include/asm/amd-ibs.h

This is a tools/-side patch for the patch that adds the original copy
of the IBS header file, in arch/x86/include/asm/.

We also add an entry to check-headers.sh, so future changes continue
to be copied.

Committer notes:

Had to add this

  -#include <asm/msr-index.h>
  +#include "msr-index.h"

And change the check-headers.sh entry to ignore this line when diffing
with the original kernel header.

This is needed so that we can use 'perf report' on a perf.data with IBS
data on a !x86 system, i.e. building on ARM fails without this as there
is no asm/msr-index.h there.

This was done on the next patch in this series and is done for things
like Intel PT and ARM CoreSight.

Signed-off-by: Kim Phillips <kim.phillips@amd.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Joao Martins <joao.m.martins@oracle.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robert Richter <robert.richter@amd.com>
Cc: Stephane Eranian <eranian@google.com>
Link: https //lore.kernel.org/r/20210817221509.88391-3-kim.phillips@amd.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/arch/x86/include/asm/amd-ibs.h

@@ -0,0 +1,132 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * From PPR Vol 1 for AMD Family 19h Model 01h B1
+ * 55898 Rev 0.35 - Feb 5, 2021
+ */
+
+#include "msr-index.h"
+
+/*
+ * IBS Hardware MSRs
+ */
+
+/* MSR 0xc0011030: IBS Fetch Control */
+union ibs_fetch_ctl {
+	__u64 val;
+	struct {
+		__u64	fetch_maxcnt:16,/* 0-15: instruction fetch max. count */
+			fetch_cnt:16,	/* 16-31: instruction fetch count */
+			fetch_lat:16,	/* 32-47: instruction fetch latency */
+			fetch_en:1,	/* 48: instruction fetch enable */
+			fetch_val:1,	/* 49: instruction fetch valid */
+			fetch_comp:1,	/* 50: instruction fetch complete */
+			ic_miss:1,	/* 51: i-cache miss */
+			phy_addr_valid:1,/* 52: physical address valid */
+			l1tlb_pgsz:2,	/* 53-54: i-cache L1TLB page size
+					 *	  (needs IbsPhyAddrValid) */
+			l1tlb_miss:1,	/* 55: i-cache fetch missed in L1TLB */
+			l2tlb_miss:1,	/* 56: i-cache fetch missed in L2TLB */
+			rand_en:1,	/* 57: random tagging enable */
+			fetch_l2_miss:1,/* 58: L2 miss for sampled fetch
+					 *      (needs IbsFetchComp) */
+			reserved:5;	/* 59-63: reserved */
+	};
+};
+
+/* MSR 0xc0011033: IBS Execution Control */
+union ibs_op_ctl {
+	__u64 val;
+	struct {
+		__u64	opmaxcnt:16,	/* 0-15: periodic op max. count */
+			reserved0:1,	/* 16: reserved */
+			op_en:1,	/* 17: op sampling enable */
+			op_val:1,	/* 18: op sample valid */
+			cnt_ctl:1,	/* 19: periodic op counter control */
+			opmaxcnt_ext:7,	/* 20-26: upper 7 bits of periodic op maximum count */
+			reserved1:5,	/* 27-31: reserved */
+			opcurcnt:27,	/* 32-58: periodic op counter current count */
+			reserved2:5;	/* 59-63: reserved */
+	};
+};
+
+/* MSR 0xc0011035: IBS Op Data 2 */
+union ibs_op_data {
+	__u64 val;
+	struct {
+		__u64	comp_to_ret_ctr:16,	/* 0-15: op completion to retire count */
+			tag_to_ret_ctr:16,	/* 15-31: op tag to retire count */
+			reserved1:2,		/* 32-33: reserved */
+			op_return:1,		/* 34: return op */
+			op_brn_taken:1,		/* 35: taken branch op */
+			op_brn_misp:1,		/* 36: mispredicted branch op */
+			op_brn_ret:1,		/* 37: branch op retired */
+			op_rip_invalid:1,	/* 38: RIP is invalid */
+			op_brn_fuse:1,		/* 39: fused branch op */
+			op_microcode:1,		/* 40: microcode op */
+			reserved2:23;		/* 41-63: reserved */
+	};
+};
+
+/* MSR 0xc0011036: IBS Op Data 2 */
+union ibs_op_data2 {
+	__u64 val;
+	struct {
+		__u64	data_src:3,	/* 0-2: data source */
+			reserved0:1,	/* 3: reserved */
+			rmt_node:1,	/* 4: destination node */
+			cache_hit_st:1,	/* 5: cache hit state */
+			reserved1:57;	/* 5-63: reserved */
+	};
+};
+
+/* MSR 0xc0011037: IBS Op Data 3 */
+union ibs_op_data3 {
+	__u64 val;
+	struct {
+		__u64	ld_op:1,			/* 0: load op */
+			st_op:1,			/* 1: store op */
+			dc_l1tlb_miss:1,		/* 2: data cache L1TLB miss */
+			dc_l2tlb_miss:1,		/* 3: data cache L2TLB hit in 2M page */
+			dc_l1tlb_hit_2m:1,		/* 4: data cache L1TLB hit in 2M page */
+			dc_l1tlb_hit_1g:1,		/* 5: data cache L1TLB hit in 1G page */
+			dc_l2tlb_hit_2m:1,		/* 6: data cache L2TLB hit in 2M page */
+			dc_miss:1,			/* 7: data cache miss */
+			dc_mis_acc:1,			/* 8: misaligned access */
+			reserved:4,			/* 9-12: reserved */
+			dc_wc_mem_acc:1,		/* 13: write combining memory access */
+			dc_uc_mem_acc:1,		/* 14: uncacheable memory access */
+			dc_locked_op:1,			/* 15: locked operation */
+			dc_miss_no_mab_alloc:1,		/* 16: DC miss with no MAB allocated */
+			dc_lin_addr_valid:1,		/* 17: data cache linear address valid */
+			dc_phy_addr_valid:1,		/* 18: data cache physical address valid */
+			dc_l2_tlb_hit_1g:1,		/* 19: data cache L2 hit in 1GB page */
+			l2_miss:1,			/* 20: L2 cache miss */
+			sw_pf:1,			/* 21: software prefetch */
+			op_mem_width:4,			/* 22-25: load/store size in bytes */
+			op_dc_miss_open_mem_reqs:6,	/* 26-31: outstanding mem reqs on DC fill */
+			dc_miss_lat:16,			/* 32-47: data cache miss latency */
+			tlb_refill_lat:16;		/* 48-63: L1 TLB refill latency */
+	};
+};
+
+/* MSR 0xc001103c: IBS Fetch Control Extended */
+union ic_ibs_extd_ctl {
+	__u64 val;
+	struct {
+		__u64	itlb_refill_lat:16,	/* 0-15: ITLB Refill latency for sampled fetch */
+			reserved:48;		/* 16-63: reserved */
+	};
+};
+
+/*
+ * IBS driver related
+ */
+
+struct perf_ibs_data {
+	u32		size;
+	union {
+		u32	data[0];	/* data buffer starts here */
+		u32	caps;
+	};
+	u64		regs[MSR_AMD64_IBS_REG_COUNT_MAX];
+};

tools/perf/check-headers.sh

@@ -144,6 +144,7 @@ done
 # diff with extra ignore lines
 check arch/x86/lib/memcpy_64.S        '-I "^EXPORT_SYMBOL" -I "^#include <asm/export.h>" -I"^SYM_FUNC_START\(_LOCAL\)*(memcpy_\(erms\|orig\))"'
 check arch/x86/lib/memset_64.S        '-I "^EXPORT_SYMBOL" -I "^#include <asm/export.h>" -I"^SYM_FUNC_START\(_LOCAL\)*(memset_\(erms\|orig\))"'
+check arch/x86/include/asm/amd-ibs.h  '-I "^#include [<\"]\(asm/\)*msr-index.h"'
 check include/uapi/asm-generic/mman.h '-I "^#include <\(uapi/\)*asm-generic/mman-common\(-tools\)*.h>"'
 check include/uapi/linux/mman.h       '-I "^#include <\(uapi/\)*asm/mman.h>"'
 check include/linux/build_bug.h       '-I "^#\(ifndef\|endif\)\( \/\/\)* static_assert$"'