WebSVN – Kolibri OS – Blame – /kernel/trunk/blkdev/ide_cache.inc

Rev	Author	Line No.	Line
2288	clevermous	1	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		2	;; ;;
10051	ace_dent	3	;; Copyright (C) KolibriOS team 2004-2024. All rights reserved. ;;
2288	clevermous	4	;; Distributed under terms of the GNU General Public License ;;
		5	;; ;;
		6	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		7
10051	ace_dent	8
2288	clevermous	9	;**************************************************************************
		10	;
		11	; [cache_ide[X]_pointer]
		12	; or [cache_ide[X]_data_pointer] first entry in cache list
		13	;
		14	; +0 - lba sector
		15	; +4 - state of cache sector
		16	; 0 = empty
		17	; 1 = used for read ( same as in hd )
		18	; 2 = used for write ( differs from hd )
		19	;
		20	; [cache_ide[X]_system_data]
		21	; or [cache_ide[x]_appl_data] - cache entries
		22	;
		23	;**************************************************************************
		24
		25	align 4
		26	find_empty_slot_CD_cache:
		27	;-----------------------------------------------------------
		28	; find empty or read slot, flush cache if next 10% is used by write
		29	; output : edi = cache slot
		30	;-----------------------------------------------------------
		31	.search_again:
		32	call cd_calculate_cache_3
		33	.search_for_empty:
		34	inc edi
		35	call cd_calculate_cache_4
		36	jbe .inside_cache
		37	mov edi, 1
		38	.inside_cache:
		39	call cd_calculate_cache_5
		40	ret
		41	;--------------------------------------------------------------------
		42	clear_CD_cache:
4700	mario79	43	DEBUGF 1, 'K : clear_CD_cache\n'
2288	clevermous	44	pusha
4700	mario79	45
		46	mov esi, [cdpos]
		47	dec esi
		48	imul esi, sizeof.IDE_CACHE
		49	add esi, cache_ide0
		50
2288	clevermous	51	xor eax, eax
4700	mario79	52
		53	mov [esi+IDE_CACHE.search_start], eax
		54	mov ecx, [esi+IDE_CACHE.system_sad_size]
		55	mov edi, [esi+IDE_CACHE.pointer]
2288	clevermous	56	call .clear
4700	mario79	57
		58	mov [esi+IDE_CACHE.appl_search_start], eax
		59	mov ecx, [esi+IDE_CACHE.appl_sad_size]
		60	mov edi, [esi+IDE_CACHE.data_pointer]
2288	clevermous	61	call .clear
4700	mario79	62
2288	clevermous	63	popa
		64	ret
4700	mario79	65	;--------------------------------------
2288	clevermous	66	.clear:
		67	shl ecx, 1
		68	cld
		69	rep stosd
		70	ret
		71	;--------------------------------------------------------------------
		72	align 4
		73	cd_calculate_cache:
4700	mario79	74	; 1 - IDE0 ... 12 - IDE11
		75	push eax
		76
		77	mov eax, [cdpos]
		78	dec eax
		79	imul eax, sizeof.IDE_CACHE
		80	add eax, cache_ide0
		81
2288	clevermous	82	cmp [cd_appl_data], 0
4700	mario79	83	jne @f
		84
		85	mov ecx, [eax+IDE_CACHE.system_sad_size]
		86	mov esi, [eax+IDE_CACHE.pointer]
		87	pop eax
2288	clevermous	88	ret
4700	mario79	89	;--------------------------------------
		90	@@:
		91	mov ecx, [eax+IDE_CACHE.appl_sad_size]
		92	mov esi, [eax+IDE_CACHE.data_pointer]
		93	pop eax
2288	clevermous	94	ret
		95	;--------------------------------------------------------------------
		96	align 4
		97	cd_calculate_cache_1:
4700	mario79	98	; 1 - IDE0 ... 12 - IDE11
		99	push eax
		100
		101	mov eax, [cdpos]
		102	dec eax
		103	imul eax, sizeof.IDE_CACHE
		104	add eax, cache_ide0
		105
2288	clevermous	106	cmp [cd_appl_data], 0
4700	mario79	107	jne @f
		108
		109	mov esi, [eax+IDE_CACHE.pointer]
		110	pop eax
2288	clevermous	111	ret
4700	mario79	112	;--------------------------------------
		113	@@:
		114	mov esi, [eax+IDE_CACHE.data_pointer]
		115	pop eax
2288	clevermous	116	ret
		117	;--------------------------------------------------------------------
		118	align 4
		119	cd_calculate_cache_2:
4700	mario79	120	; 1 - IDE0 ... 12 - IDE11
		121	mov eax, [cdpos]
		122	dec eax
		123	imul eax, sizeof.IDE_CACHE
		124	add eax, cache_ide0
		125
2288	clevermous	126	cmp [cd_appl_data], 0
4700	mario79	127	jne @f
		128
		129	mov eax, [eax+IDE_CACHE.system_data]
2288	clevermous	130	ret
4700	mario79	131	;--------------------------------------
		132	@@:
		133	mov eax, [eax+IDE_CACHE.appl_data]
2288	clevermous	134	ret
		135	;--------------------------------------------------------------------
		136	align 4
		137	cd_calculate_cache_3:
4700	mario79	138	; 1 - IDE0 ... 12 - IDE11
		139	push eax
2288	clevermous	140
4700	mario79	141	mov eax, [cdpos]
		142	dec eax
		143	imul eax, sizeof.IDE_CACHE
		144	add eax, cache_ide0
		145
2288	clevermous	146	cmp [cd_appl_data], 0
4700	mario79	147	jne @f
		148
		149	mov edi, [eax+IDE_CACHE.search_start]
		150	pop eax
2288	clevermous	151	ret
4700	mario79	152	;--------------------------------------
		153	@@:
		154	mov edi, [eax+IDE_CACHE.appl_search_start]
		155	pop eax
2288	clevermous	156	ret
		157	;--------------------------------------------------------------------
		158	align 4
		159	cd_calculate_cache_4:
4700	mario79	160	; 1 - IDE0 ... 12 - IDE11
		161	push eax
		162
		163	mov eax, [cdpos]
		164	dec eax
		165	imul eax, sizeof.IDE_CACHE
		166	add eax, cache_ide0
		167
2288	clevermous	168	cmp [cd_appl_data], 0
4700	mario79	169	jne @f
		170
		171	cmp edi, [eax+IDE_CACHE.system_sad_size]
		172	pop eax
2288	clevermous	173	ret
4700	mario79	174	;--------------------------------------
		175	@@:
		176	cmp edi, [eax+IDE_CACHE.appl_sad_size]
		177	pop eax
2288	clevermous	178	ret
		179	;--------------------------------------------------------------------
		180	align 4
		181	cd_calculate_cache_5:
4700	mario79	182	; 1 - IDE0 ... 12 - IDE11
		183	push eax
		184
		185	mov eax, [cdpos]
		186	dec eax
		187	imul eax, sizeof.IDE_CACHE
		188	add eax, cache_ide0
		189
2288	clevermous	190	cmp [cd_appl_data], 0
4700	mario79	191	jne @f
		192
		193	mov [eax+IDE_CACHE.search_start], edi
		194	pop eax
2288	clevermous	195	ret
4700	mario79	196	;--------------------------------------
		197	@@:
		198	mov [eax+IDE_CACHE.appl_search_start], edi
		199	pop eax
2288	clevermous	200	ret
		201	;--------------------------------------------------------------------

Subversion Repositories Kolibri OS

(root)/kernel/trunk/blkdev/ide_cache.inc – Rev 10051