WebSVN – Kolibri OS – Blame – /kernel/branches/Kolibri-acpi/blkdev/ide_cache.inc

Rev	Author	Line No.	Line
750	victor	1	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		2	;; ;;
5565	serge	3	;; Copyright (C) KolibriOS team 2004-2015. All rights reserved. ;;
750	victor	4	;; Distributed under terms of the GNU General Public License ;;
		5	;; ;;
		6	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		7
580	mario79	8	;**************************************************************************
		9	;
		10	; [cache_ide[X]_pointer]
		11	; or [cache_ide[X]_data_pointer] first entry in cache list
		12	;
		13	; +0 - lba sector
		14	; +4 - state of cache sector
		15	; 0 = empty
		16	; 1 = used for read ( same as in hd )
		17	; 2 = used for write ( differs from hd )
		18	;
		19	; [cache_ide[X]_system_data]
		20	; or [cache_ide[x]_appl_data] - cache entries
		21	;
		22	;**************************************************************************
593	mikedld	23
750	victor	24	$Revision: 5565 $
593	mikedld	25
580	mario79	26	align 4
585	mario79	27	find_empty_slot_CD_cache:
		28	;-----------------------------------------------------------
		29	; find empty or read slot, flush cache if next 10% is used by write
		30	; output : edi = cache slot
		31	;-----------------------------------------------------------
		32	.search_again:
3555	Serge	33	call cd_calculate_cache_3
585	mario79	34	.search_for_empty:
3555	Serge	35	inc edi
		36	call cd_calculate_cache_4
		37	jbe .inside_cache
2434	Serge	38	mov edi, 1
585	mario79	39	.inside_cache:
3555	Serge	40	call cd_calculate_cache_5
		41	ret
585	mario79	42	;--------------------------------------------------------------------
		43	clear_CD_cache:
5201	serge	44	DEBUGF 1, 'K : clear_CD_cache\n'
3555	Serge	45	pusha
5201	serge	46
		47	mov esi, [cdpos]
		48	dec esi
		49	imul esi, sizeof.IDE_CACHE
		50	add esi, cache_ide0
		51
2434	Serge	52	xor eax, eax
5201	serge	53
		54	mov [esi+IDE_CACHE.search_start], eax
		55	mov ecx, [esi+IDE_CACHE.system_sad_size]
		56	mov edi, [esi+IDE_CACHE.pointer]
3555	Serge	57	call .clear
5201	serge	58
		59	mov [esi+IDE_CACHE.appl_search_start], eax
		60	mov ecx, [esi+IDE_CACHE.appl_sad_size]
		61	mov edi, [esi+IDE_CACHE.data_pointer]
3555	Serge	62	call .clear
5201	serge	63
3555	Serge	64	popa
		65	ret
5201	serge	66	;--------------------------------------
585	mario79	67	.clear:
2434	Serge	68	shl ecx, 1
3555	Serge	69	cld
		70	rep stosd
		71	ret
585	mario79	72	;--------------------------------------------------------------------
		73	align 4
		74	cd_calculate_cache:
5201	serge	75	; 1 - IDE0 ... 12 - IDE11
		76	push eax
		77
		78	mov eax, [cdpos]
		79	dec eax
		80	imul eax, sizeof.IDE_CACHE
		81	add eax, cache_ide0
		82
2434	Serge	83	cmp [cd_appl_data], 0
5201	serge	84	jne @f
		85
		86	mov ecx, [eax+IDE_CACHE.system_sad_size]
		87	mov esi, [eax+IDE_CACHE.pointer]
		88	pop eax
3555	Serge	89	ret
5201	serge	90	;--------------------------------------
		91	@@:
		92	mov ecx, [eax+IDE_CACHE.appl_sad_size]
		93	mov esi, [eax+IDE_CACHE.data_pointer]
		94	pop eax
3555	Serge	95	ret
585	mario79	96	;--------------------------------------------------------------------
		97	align 4
		98	cd_calculate_cache_1:
5201	serge	99	; 1 - IDE0 ... 12 - IDE11
		100	push eax
		101
		102	mov eax, [cdpos]
		103	dec eax
		104	imul eax, sizeof.IDE_CACHE
		105	add eax, cache_ide0
		106
2434	Serge	107	cmp [cd_appl_data], 0
5201	serge	108	jne @f
		109
		110	mov esi, [eax+IDE_CACHE.pointer]
		111	pop eax
3555	Serge	112	ret
5201	serge	113	;--------------------------------------
		114	@@:
		115	mov esi, [eax+IDE_CACHE.data_pointer]
		116	pop eax
3555	Serge	117	ret
585	mario79	118	;--------------------------------------------------------------------
		119	align 4
		120	cd_calculate_cache_2:
5201	serge	121	; 1 - IDE0 ... 12 - IDE11
		122	mov eax, [cdpos]
		123	dec eax
		124	imul eax, sizeof.IDE_CACHE
		125	add eax, cache_ide0
		126
2434	Serge	127	cmp [cd_appl_data], 0
5201	serge	128	jne @f
		129
		130	mov eax, [eax+IDE_CACHE.system_data]
3555	Serge	131	ret
5201	serge	132	;--------------------------------------
		133	@@:
		134	mov eax, [eax+IDE_CACHE.appl_data]
3555	Serge	135	ret
585	mario79	136	;--------------------------------------------------------------------
		137	align 4
		138	cd_calculate_cache_3:
5201	serge	139	; 1 - IDE0 ... 12 - IDE11
		140	push eax
585	mario79	141
5201	serge	142	mov eax, [cdpos]
		143	dec eax
		144	imul eax, sizeof.IDE_CACHE
		145	add eax, cache_ide0
		146
2434	Serge	147	cmp [cd_appl_data], 0
5201	serge	148	jne @f
		149
		150	mov edi, [eax+IDE_CACHE.search_start]
		151	pop eax
3555	Serge	152	ret
5201	serge	153	;--------------------------------------
		154	@@:
		155	mov edi, [eax+IDE_CACHE.appl_search_start]
		156	pop eax
3555	Serge	157	ret
585	mario79	158	;--------------------------------------------------------------------
		159	align 4
		160	cd_calculate_cache_4:
5201	serge	161	; 1 - IDE0 ... 12 - IDE11
		162	push eax
		163
		164	mov eax, [cdpos]
		165	dec eax
		166	imul eax, sizeof.IDE_CACHE
		167	add eax, cache_ide0
		168
2434	Serge	169	cmp [cd_appl_data], 0
5201	serge	170	jne @f
		171
		172	cmp edi, [eax+IDE_CACHE.system_sad_size]
		173	pop eax
3555	Serge	174	ret
5201	serge	175	;--------------------------------------
		176	@@:
		177	cmp edi, [eax+IDE_CACHE.appl_sad_size]
		178	pop eax
3555	Serge	179	ret
585	mario79	180	;--------------------------------------------------------------------
		181	align 4
		182	cd_calculate_cache_5:
5201	serge	183	; 1 - IDE0 ... 12 - IDE11
		184	push eax
		185
		186	mov eax, [cdpos]
		187	dec eax
		188	imul eax, sizeof.IDE_CACHE
		189	add eax, cache_ide0
		190
2434	Serge	191	cmp [cd_appl_data], 0
5201	serge	192	jne @f
		193
		194	mov [eax+IDE_CACHE.search_start], edi
		195	pop eax
3555	Serge	196	ret
5201	serge	197	;--------------------------------------
		198	@@:
		199	mov [eax+IDE_CACHE.appl_search_start], edi
		200	pop eax
3555	Serge	201	ret
585	mario79	202	;--------------------------------------------------------------------

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(root)/kernel/branches/Kolibri-acpi/blkdev/ide_cache.inc – Rev 6078