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/*
 * fixmap.h: compile-time virtual memory allocation
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (C) 1998 Ingo Molnar
 *
 * Copyright 2008 Freescale Semiconductor Inc.
 *   Port to powerpc added by Kumar Gala
 *
 * Copyright 2011 Michal Simek <monstr@monstr.eu>
 * Copyright 2011 PetaLogix Qld Pty Ltd
 *   Port to Microblaze
 */

#ifndef _ASM_FIXMAP_H
#define _ASM_FIXMAP_H

#ifndef __ASSEMBLY__
#include <linux/kernel.h>
#include <asm/page.h>
#ifdef CONFIG_HIGHMEM
#include <linux/threads.h>
#include <asm/kmap_types.h>
#endif

#define FIXADDR_TOP	((unsigned long)(-PAGE_SIZE))

/*
 * Here we define all the compile-time 'special' virtual
 * addresses. The point is to have a constant address at
 * compile time, but to set the physical address only
 * in the boot process. We allocate these special addresses
 * from the end of virtual memory (0xfffff000) backwards.
 * Also this lets us do fail-safe vmalloc(), we
 * can guarantee that these special addresses and
 * vmalloc()-ed addresses never overlap.
 *
 * these 'compile-time allocated' memory buffers are
 * fixed-size 4k pages. (or larger if used with an increment
 * highger than 1) use fixmap_set(idx,phys) to associate
 * physical memory with fixmap indices.
 *
 * TLB entries of such buffers will not be flushed across
 * task switches.
 */
enum fixed_addresses {
	FIX_HOLE,
#ifdef CONFIG_HIGHMEM
	FIX_KMAP_BEGIN,	/* reserved pte's for temporary kernel mappings */
	FIX_KMAP_END = FIX_KMAP_BEGIN + (KM_TYPE_NR * num_possible_cpus()) - 1,
#endif
	__end_of_fixed_addresses
};

extern void __set_fixmap(enum fixed_addresses idx,
					phys_addr_t phys, pgprot_t flags);

#define __FIXADDR_SIZE	(__end_of_fixed_addresses << PAGE_SHIFT)
#define FIXADDR_START		(FIXADDR_TOP - __FIXADDR_SIZE)

#define FIXMAP_PAGE_NOCACHE PAGE_KERNEL_CI

#include <asm-generic/fixmap.h>

#endif /* !__ASSEMBLY__ */
#endif
} /* Literal.String.Backtick */ .highlight .sc { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Char */ .highlight .dl { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Delimiter */ .highlight .sd { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Doc */ .highlight .s2 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Double */ .highlight .se { color: #0044dd; background-color: #fff0f0 } /* Literal.String.Escape */ .highlight .sh { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Heredoc */ .highlight .si { color: #3333bb; background-color: #fff0f0 } /* Literal.String.Interpol */ .highlight .sx { color: #22bb22; background-color: #f0fff0 } /* Literal.String.Other */ .highlight .sr { color: #008800; background-color: #fff0ff } /* Literal.String.Regex */ .highlight .s1 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Single */ .highlight .ss { color: #aa6600; background-color: #fff0f0 } /* Literal.String.Symbol */ .highlight .bp { color: #003388 } /* Name.Builtin.Pseudo */ .highlight .fm { color: #0066bb; font-weight: bold } /* Name.Function.Magic */ .highlight .vc { color: #336699 } /* Name.Variable.Class */ .highlight .vg { color: #dd7700 } /* Name.Variable.Global */ .highlight .vi { color: #3333bb } /* Name.Variable.Instance */ .highlight .vm { color: #336699 } /* Name.Variable.Magic */ .highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */ } 
%option reentrant
%option bison-bridge
%option prefix="parse_events_"
%option stack
%option bison-locations
%option yylineno

%{
#include <errno.h>
#include "../perf.h"
#include "parse-events-bison.h"
#include "parse-events.h"

char *parse_events_get_text(yyscan_t yyscanner);
YYSTYPE *parse_events_get_lval(yyscan_t yyscanner);

static int __value(YYSTYPE *yylval, char *str, int base, int token)
{
	u64 num;

	errno = 0;
	num = strtoull(str, NULL, base);
	if (errno)
		return PE_ERROR;

	yylval->num = num;
	return token;
}

static int value(yyscan_t scanner, int base)
{
	YYSTYPE *yylval = parse_events_get_lval(scanner);
	char *text = parse_events_get_text(scanner);

	return __value(yylval, text, base, PE_VALUE);
}

static int raw(yyscan_t scanner)
{
	YYSTYPE *yylval = parse_events_get_lval(scanner);
	char *text = parse_events_get_text(scanner);

	return __value(yylval, text + 1, 16, PE_RAW);
}

static int str(yyscan_t scanner, int token)
{
	YYSTYPE *yylval = parse_events_get_lval(scanner);
	char *text = parse_events_get_text(scanner);

	yylval->str = strdup(text);
	return token;
}

#define REWIND(__alloc)				\
do {								\
	YYSTYPE *__yylval = parse_events_get_lval(yyscanner);	\
	char *text = parse_events_get_text(yyscanner);		\
								\
	if (__alloc)						\
		__yylval->str = strdup(text);			\
								\
	yycolumn -= strlen(text);				\
	yyless(0);						\
} while (0)

static int pmu_str_check(yyscan_t scanner)
{
	YYSTYPE *yylval = parse_events_get_lval(scanner);
	char *text = parse_events_get_text(scanner);

	yylval->str = strdup(text);
	switch (perf_pmu__parse_check(text)) {
		case PMU_EVENT_SYMBOL_PREFIX:
			return PE_PMU_EVENT_PRE;
		case PMU_EVENT_SYMBOL_SUFFIX:
			return PE_PMU_EVENT_SUF;
		case PMU_EVENT_SYMBOL:
			return PE_KERNEL_PMU_EVENT;
		default:
			return PE_NAME;
	}
}

static int sym(yyscan_t scanner, int type, int config)
{
	YYSTYPE *yylval = parse_events_get_lval(scanner);

	yylval->num = (type << 16) + config;
	return type == PERF_TYPE_HARDWARE ? PE_VALUE_SYM_HW : PE_VALUE_SYM_SW;
}

static int term(yyscan_t scanner, int type)
{
	YYSTYPE *yylval = parse_events_get_lval(scanner);

	yylval->num = type;
	return PE_TERM;
}

#define YY_USER_ACTION					\
do {							\
	yylloc->last_column  = yylloc->first_column;	\
	yylloc->first_column = yycolumn;		\
	yycolumn += yyleng;				\
} while (0);

%}

%x mem
%s config
%x event

group		[^,{}/]*[{][^}]*[}][^,{}/]*
event_pmu	[^,{}/]+[/][^/]*[/][^,{}/]*
event		[^,{}/]+
bpf_object	.*\.(o|bpf)
bpf_source	.*\.c

num_dec		[0-9]+
num_hex		0x[a-fA-F0-9]+
num_raw_hex	[a-fA-F0-9]+
name		[a-zA-Z_*?][a-zA-Z0-9_*?.]*
name_minus	[a-zA-Z_*?][a-zA-Z0-9\-_*?.]*
/* If you add a modifier you need to update check_modifier() */
modifier_event	[ukhpPGHSDI]+
modifier_bp	[rwx]{1,3}

%%

%{
	{
		int start_token;

		start_token = parse_events_get_extra(yyscanner);

		if (start_token == PE_START_TERMS)
			BEGIN(config);
		else if (start_token == PE_START_EVENTS)
			BEGIN(event);

		if (start_token) {
			parse_events_set_extra(NULL, yyscanner);
			/*
			 * The flex parser does not init locations variable
			 * via the scan_string interface, so we need do the
			 * init in here.
			 */
			yycolumn = 0;
			return start_token;
		}
         }
%}

<event>{

{group}		{
			BEGIN(INITIAL);
			REWIND(0);
		}

{event_pmu}	|
{bpf_object}	|
{bpf_source}	|
{event}		{
			BEGIN(INITIAL);
			REWIND(1);
			return PE_EVENT_NAME;
		}

<<EOF>>		{
			BEGIN(INITIAL);
			REWIND(0);
		}

}

<config>{
	/*
	 * Please update parse_events_formats_error_string any time
	 * new static term is added.
	 */
config			{ return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG); }
config1			{ return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG1); }
config2			{ return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG2); }
name			{ return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NAME); }
period			{ return term(yyscanner, PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD); }
freq			{ return term(yyscanner, PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ); }
branch_type		{ return term(yyscanner, PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE); }
time			{ return term(yyscanner, PARSE_EVENTS__TERM_TYPE_TIME); }
call-graph		{ return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CALLGRAPH); }
stack-size		{ return term(yyscanner, PARSE_EVENTS__TERM_TYPE_STACKSIZE); }
inherit			{ return term(yyscanner, PARSE_EVENTS__TERM_TYPE_INHERIT); }
no-inherit		{ return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NOINHERIT); }
,			{ return ','; }
"/"			{ BEGIN(INITIAL); return '/'; }
{name_minus}		{ return str(yyscanner, PE_NAME); }
}

<mem>{
{modifier_bp}		{ return str(yyscanner, PE_MODIFIER_BP); }
:			{ return ':'; }
"/"			{ return '/'; }
{num_dec}		{ return value(yyscanner, 10); }
{num_hex}		{ return value(yyscanner, 16); }
	/*
	 * We need to separate 'mem:' scanner part, in order to get specific
	 * modifier bits parsed out. Otherwise we would need to handle PE_NAME
	 * and we'd need to parse it manually. During the escape from <mem>
	 * state we need to put the escaping char back, so we dont miss it.
	 */
.			{ unput(*yytext); BEGIN(INITIAL); }
	/*
	 * We destroy the scanner after reaching EOF,
	 * but anyway just to be sure get back to INIT state.
	 */
<<EOF>>			{ BEGIN(INITIAL); }
}

cpu-cycles|cycles				{ return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES); }
stalled-cycles-frontend|idle-cycles-frontend	{ return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_FRONTEND); }
stalled-cycles-backend|idle-cycles-backend	{ return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_BACKEND); }
instructions					{ return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS); }
cache-references				{ return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_REFERENCES); }
cache-misses					{ return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_MISSES); }
branch-instructions|branches			{ return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_INSTRUCTIONS); }
branch-misses					{ return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_MISSES); }
bus-cycles					{ return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BUS_CYCLES); }
ref-cycles					{ return sym(yyscanner, PERF_TYPE_HARDWARE, PERF_COUNT_HW_REF_CPU_CYCLES); }
cpu-clock					{ return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_CLOCK); }
task-clock					{ return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK); }
page-faults|faults				{ return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS); }
minor-faults					{ return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MIN); }
major-faults					{ return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MAJ); }
context-switches|cs				{ return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CONTEXT_SWITCHES); }
cpu-migrations|migrations			{ return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_MIGRATIONS); }
alignment-faults				{ return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_ALIGNMENT_FAULTS); }
emulation-faults				{ return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_EMULATION_FAULTS); }
dummy						{ return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_DUMMY); }

	/*
	 * We have to handle the kernel PMU event cycles-ct/cycles-t/mem-loads/mem-stores separately.
	 * Because the prefix cycles is mixed up with cpu-cycles.
	 * loads and stores are mixed up with cache event
	 */
cycles-ct					{ return str(yyscanner, PE_KERNEL_PMU_EVENT); }
cycles-t					{ return str(yyscanner, PE_KERNEL_PMU_EVENT); }
mem-loads					{ return str(yyscanner, PE_KERNEL_PMU_EVENT); }
mem-stores					{ return str(yyscanner, PE_KERNEL_PMU_EVENT); }

L1-dcache|l1-d|l1d|L1-data		|
L1-icache|l1-i|l1i|L1-instruction	|
LLC|L2					|
dTLB|d-tlb|Data-TLB			|
iTLB|i-tlb|Instruction-TLB		|
branch|branches|bpu|btb|bpc		|
node					{ return str(yyscanner, PE_NAME_CACHE_TYPE); }

load|loads|read				|
store|stores|write			|
prefetch|prefetches			|
speculative-read|speculative-load	|
refs|Reference|ops|access		|
misses|miss				{ return str(yyscanner, PE_NAME_CACHE_OP_RESULT); }

mem:			{ BEGIN(mem); return PE_PREFIX_MEM; }
r{num_raw_hex}		{ return raw(yyscanner); }
{num_dec}		{ return value(yyscanner, 10); }
{num_hex}		{ return value(yyscanner, 16); }

{modifier_event}	{ return str(yyscanner, PE_MODIFIER_EVENT); }
{bpf_object}		{ return str(yyscanner, PE_BPF_OBJECT); }
{bpf_source}		{ return str(yyscanner, PE_BPF_SOURCE); }
{name}			{ return pmu_str_check(yyscanner); }
"/"			{ BEGIN(config); return '/'; }
-			{ return '-'; }
,			{ BEGIN(event); return ','; }
:			{ return ':'; }
"{"			{ BEGIN(event); return '{'; }
"}"			{ return '}'; }
=			{ return '='; }
\n			{ }
.			{ }

%%

int parse_events_wrap(void *scanner __maybe_unused)
{
	return 1;
}