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

Rev	Author	Line No.	Line
580	mario79	1	;**************************************************************************
		2	;
		3	; [cache_ide[X]_pointer]
		4	; or [cache_ide[X]_data_pointer] first entry in cache list
		5	;
		6	; +0 - lba sector
		7	; +4 - state of cache sector
		8	; 0 = empty
		9	; 1 = used for read ( same as in hd )
		10	; 2 = used for write ( differs from hd )
		11	;
		12	; [cache_ide[X]_system_data]
		13	; or [cache_ide[x]_appl_data] - cache entries
		14	;
		15	;**************************************************************************
593	mikedld	16
		17	$Revision: 0 $
		18
		19
580	mario79	20	align 4
		21	write_cache:
		22	;-----------------------------------------------------------
		23	; write all changed sectors to disk
		24	;-----------------------------------------------------------
		25	push eax ecx edx esi edi
		26
		27	; write difference ( 2 ) from cache to hd
		28	call calculate_cache
		29	add esi,8
		30	mov edi,1
585	mario79	31	write_cache_more:
		32	cmp dword [esi+4],2 ; if cache slot is not different
580	mario79	33	jne .write_chain
585	mario79	34	mov dword [esi+4],1 ; same as in hd
		35	mov eax,[esi] ; eax = sector to write
580	mario79	36	cmp eax,[PARTITION_START]
585	mario79	37	jb danger
580	mario79	38	cmp eax,[PARTITION_END]
585	mario79	39	ja danger
709	diamond	40	cmp [hdpos], 0x80
		41	jae @f
580	mario79	42	; DMA write is permitted only if [allow_dma_access]=1
585	mario79	43	cmp [allow_dma_access], 2
		44	jae .nodma
		45	cmp [dma_hdd], 1
		46	jnz .nodma
709	diamond	47	@@:
580	mario79	48	; ��ꥤ��塞 �� 楯�窨 ��᫥��⥫�� ᥪ�஢ � �� 饭��
585	mario79	49	cmp ecx, 1
		50	jz .nonext
		51	cmp dword [esi+8+4], 2
		52	jnz .nonext
		53	push eax
		54	inc eax
		55	cmp eax, [esi+8]
		56	pop eax
		57	jnz .nonext
		58	cmp [cache_chain_started], 1
		59	jz @f
		60	mov [cache_chain_started], 1
		61	mov [cache_chain_size], 0
		62	mov [cache_chain_pos], edi
		63	mov [cache_chain_ptr], esi
580	mario79	64	@@:
585	mario79	65	inc [cache_chain_size]
709	diamond	66	cmp [cache_chain_size], 16
585	mario79	67	jnz .continue
		68	jmp .write_chain
580	mario79	69	.nonext:
585	mario79	70	call flush_cache_chain
		71	mov [cache_chain_size], 1
		72	mov [cache_chain_ptr], esi
		73	call write_cache_sector
		74	jmp .continue
580	mario79	75	.nodma:
585	mario79	76	call cache_write_pio
580	mario79	77	.write_chain:
585	mario79	78	call flush_cache_chain
580	mario79	79	.continue:
585	mario79	80	danger:
580	mario79	81	add esi,8
		82	inc edi
		83	dec ecx
		84	jnz write_cache_more
585	mario79	85	call flush_cache_chain
580	mario79	86	return_02:
		87	pop edi esi edx ecx eax
		88	ret
		89
		90	flush_cache_chain:
585	mario79	91	cmp [cache_chain_started], 0
		92	jz @f
		93	call write_cache_chain
		94	mov [cache_chain_started], 0
580	mario79	95	@@:
585	mario79	96	ret
		97	;--------------------------------------------------------------------
580	mario79	98	align 4
		99	find_empty_slot:
		100	;-----------------------------------------------------------
		101	; find empty or read slot, flush cache if next 10% is used by write
		102	; output : edi = cache slot
		103	;-----------------------------------------------------------
		104	; push ecx esi
		105
585	mario79	106	search_again:
580	mario79	107	call calculate_cache_3
585	mario79	108	shr ecx,3
		109	search_for_empty:
580	mario79	110	inc edi
		111	call calculate_cache_4
		112	jbe inside_cache
		113	mov edi,1
585	mario79	114	inside_cache:
580	mario79	115	push esi
		116	call calculate_cache_1
		117	cmp dword [edi*8+esi+4],2
		118	pop esi
585	mario79	119	jb found_slot ; it's empty or read
580	mario79	120	dec ecx
		121	jnz search_for_empty
585	mario79	122	call write_cache ; no empty slots found, write all
580	mario79	123	cmp [hd_error],0
		124	jne found_slot_access_denied
585	mario79	125	jmp search_again ; and start again
		126	found_slot:
580	mario79	127	call calculate_cache_5
585	mario79	128	found_slot_access_denied:
580	mario79	129	ret
585	mario79	130	;--------------------------------------------------------------------
580	mario79	131	align 4
		132	clear_hd_cache:
		133	mov [fat_in_cache],-1
		134	mov [fat_change],0
		135	ret
		136	;--------------------------------------------------------------------
		137	align 4
		138	calculate_cache:
		139	; mov ecx,cache_max ; entries in cache
		140	; mov esi,HD_CACHE+8
		141
		142	; 1 - IDE0 ... 4 - IDE3
		143	.ide0:
		144	cmp [hdpos],1
		145	jne .ide1
		146	cmp [hdd_appl_data],0
		147	jne .ide0_appl_data
		148	mov ecx,[cache_ide0_system_sad_size]
		149	mov esi,[cache_ide0_pointer]
		150	ret
		151	.ide0_appl_data:
		152	mov ecx,[cache_ide0_appl_sad_size]
		153	mov esi,[cache_ide0_data_pointer]
		154	ret
		155	.ide1:
		156	cmp [hdpos],2
		157	jne .ide2
		158	cmp [hdd_appl_data],0
		159	jne .ide1_appl_data
		160	mov ecx,[cache_ide1_system_sad_size]
		161	mov esi,[cache_ide1_pointer]
		162	ret
		163	.ide1_appl_data:
		164	mov ecx,[cache_ide1_appl_sad_size]
		165	mov esi,[cache_ide1_data_pointer]
		166	ret
		167	.ide2:
		168	cmp [hdpos],3
		169	jne .ide3
		170	cmp [hdd_appl_data],0
		171	jne .ide2_appl_data
		172	mov ecx,[cache_ide2_system_sad_size]
585	mario79	173	mov esi,[cache_ide2_pointer]
580	mario79	174	ret
		175	.ide2_appl_data:
		176	mov ecx,[cache_ide2_appl_sad_size]
		177	mov esi,[cache_ide2_data_pointer]
		178	ret
		179	.ide3:
709	diamond	180	cmp [hdpos],4
		181	jne .noide
580	mario79	182	cmp [hdd_appl_data],0
		183	jne .ide3_appl_data
		184	mov ecx,[cache_ide3_system_sad_size]
585	mario79	185	mov esi,[cache_ide3_pointer]
580	mario79	186	ret
		187	.ide3_appl_data:
		188	mov ecx,[cache_ide3_appl_sad_size]
		189	mov esi,[cache_ide3_data_pointer]
		190	ret
709	diamond	191	.noide:
		192	push eax
		193	mov eax,[hdpos]
		194	sub eax,80h
		195	cmp byte [BiosDisksData+eax*4+2], -1
		196	jz @f
		197	movzx eax,byte [BiosDisksData+eax*4+2]
		198	imul eax,cache_ide1-cache_ide0
		199	add eax,cache_ide0
		200	jmp .get
		201	@@:
		202	imul eax,cache_ide1-cache_ide0
		203	add eax,BiosDiskCaches
		204	.get:
		205	cmp [hdd_appl_data],0
		206	jne .bd_appl_data
		207	mov ecx,[cache_ide0_system_sad_size-cache_ide0+eax]
		208	mov esi,[cache_ide0_pointer-cache_ide0+eax]
		209	pop eax
		210	ret
		211	.bd_appl_data:
		212	mov ecx,[cache_ide0_appl_sad_size-cache_ide0+eax]
		213	mov esi,[cache_ide0_data_pointer-cache_ide0+eax]
		214	pop eax
		215	ret
580	mario79	216	;--------------------------------------------------------------------
		217	align 4
		218	calculate_cache_1:
		219	; lea esi,[edi*8+HD_CACHE]
		220	; 1 - IDE0 ... 4 - IDE3
		221	.ide0:
		222	cmp [hdpos],1
		223	jne .ide1
		224	cmp [hdd_appl_data],0
		225	jne .ide0_appl_data
		226	mov esi,[cache_ide0_pointer]
		227	ret
		228	.ide0_appl_data:
		229	mov esi,[cache_ide0_data_pointer]
		230	ret
		231	.ide1:
		232	cmp [hdpos],2
		233	jne .ide2
		234	cmp [hdd_appl_data],0
		235	jne .ide1_appl_data
		236	mov esi,[cache_ide1_pointer]
		237	ret
		238	.ide1_appl_data:
		239	mov esi,[cache_ide1_data_pointer]
		240	ret
		241	.ide2:
		242	cmp [hdpos],3
		243	jne .ide3
		244	cmp [hdd_appl_data],0
		245	jne .ide2_appl_data
		246	mov esi,[cache_ide2_pointer]
		247	ret
		248	.ide2_appl_data:
		249	mov esi,[cache_ide2_data_pointer]
		250	ret
		251	.ide3:
709	diamond	252	cmp [hdpos],4
		253	jne .noide
580	mario79	254	cmp [hdd_appl_data],0
		255	jne .ide3_appl_data
585	mario79	256	mov esi,[cache_ide3_pointer]
580	mario79	257	ret
		258	.ide3_appl_data:
		259	mov esi,[cache_ide3_data_pointer]
		260	ret
709	diamond	261	.noide:
		262	push eax
		263	mov eax,[hdpos]
		264	sub eax,80h
		265	cmp byte [BiosDisksData+eax*4+2], -1
		266	jz @f
		267	movzx eax,byte [BiosDisksData+eax*4+2]
		268	imul eax,cache_ide1-cache_ide0
		269	add eax,cache_ide0
		270	jmp .get
		271	@@:
		272	imul eax,cache_ide1-cache_ide0
		273	add eax,BiosDiskCaches
		274	.get:
		275	cmp [hdd_appl_data],0
		276	jne .bd_appl_data
		277	mov esi,[cache_ide0_pointer-cache_ide0+eax]
		278	pop eax
		279	ret
		280	.bd_appl_data:
		281	mov esi,[cache_ide0_data_pointer-cache_ide0+eax]
		282	pop eax
		283	ret
		284
580	mario79	285	;--------------------------------------------------------------------
		286	align 4
		287	calculate_cache_2:
		288	; add esi,HD_CACHE+65536
		289	; 1 - IDE0 ... 4 - IDE3
		290	.ide0:
		291	cmp [hdpos],1
		292	jne .ide1
		293	cmp [hdd_appl_data],0
		294	jne .ide0_appl_data
585	mario79	295	mov eax,[cache_ide0_system_data]
580	mario79	296	ret
		297	.ide0_appl_data:
		298	mov eax,[cache_ide0_appl_data]
		299	ret
		300	.ide1:
		301	cmp [hdpos],2
		302	jne .ide2
		303	cmp [hdd_appl_data],0
		304	jne .ide1_appl_data
		305	mov eax,[cache_ide1_system_data]
		306	ret
		307	.ide1_appl_data:
		308	mov eax,[cache_ide1_appl_data]
		309	ret
		310	.ide2:
		311	cmp [hdpos],3
		312	jne .ide3
		313	cmp [hdd_appl_data],0
		314	jne .ide2_appl_data
		315	mov eax,[cache_ide2_system_data]
		316	ret
		317	.ide2_appl_data:
		318	mov eax,[cache_ide2_appl_data]
		319	ret
		320	.ide3:
709	diamond	321	cmp [hdpos],4
		322	jne .noide
580	mario79	323	cmp [hdd_appl_data],0
		324	jne .ide3_appl_data
585	mario79	325	mov eax,[cache_ide3_system_data]
580	mario79	326	ret
		327	.ide3_appl_data:
		328	mov eax,[cache_ide3_appl_data]
		329	ret
709	diamond	330	.noide:
		331	mov eax,[hdpos]
		332	sub eax,80h
		333	cmp byte [BiosDisksData+eax*4+2], -1
		334	jz @f
		335	movzx eax,byte [BiosDisksData+eax*4+2]
		336	imul eax,cache_ide1-cache_ide0
		337	add eax,cache_ide0
		338	jmp .get
		339	@@:
		340	imul eax,cache_ide1-cache_ide0
		341	add eax,BiosDiskCaches
		342	.get:
		343	cmp [hdd_appl_data],0
		344	jne .bd_appl_data
		345	mov eax,[cache_ide0_system_data-cache_ide0+eax]
		346	ret
		347	.bd_appl_data:
		348	mov eax,[cache_ide0_appl_data-cache_ide0+eax]
		349	ret
580	mario79	350	;--------------------------------------------------------------------
		351	align 4
		352	calculate_cache_3:
		353	; mov ecx,cache_max*10/100
		354	; mov edi,[cache_search_start]
		355
		356	; 1 - IDE0 ... 4 - IDE3
		357	.ide0:
		358	cmp [hdpos],1
		359	jne .ide1
		360	cmp [hdd_appl_data],0
		361	jne .ide0_appl_data
		362	mov ecx,[cache_ide0_system_sad_size]
		363	mov edi,[cache_ide0_search_start]
		364	ret
		365	.ide0_appl_data:
		366	mov ecx,[cache_ide0_appl_sad_size]
		367	mov edi,[cache_ide0_appl_search_start]
		368	ret
		369	.ide1:
		370	cmp [hdpos],2
		371	jne .ide2
		372	cmp [hdd_appl_data],0
		373	jne .ide1_appl_data
		374	mov ecx,[cache_ide1_system_sad_size]
		375	mov edi,[cache_ide1_search_start]
		376	ret
		377	.ide1_appl_data:
		378	mov ecx,[cache_ide1_appl_sad_size]
		379	mov edi,[cache_ide1_appl_search_start]
		380	ret
		381	.ide2:
		382	cmp [hdpos],3
		383	jne .ide3
		384	cmp [hdd_appl_data],0
		385	jne .ide2_appl_data
		386	mov ecx,[cache_ide2_system_sad_size]
585	mario79	387	mov edi,[cache_ide2_search_start]
580	mario79	388	ret
		389	.ide2_appl_data:
		390	mov ecx,[cache_ide2_appl_sad_size]
		391	mov edi,[cache_ide2_appl_search_start]
		392	ret
		393	.ide3:
709	diamond	394	cmp [hdpos],4
		395	jne .noide
580	mario79	396	cmp [hdd_appl_data],0
		397	jne .ide3_appl_data
		398	mov ecx,[cache_ide3_system_sad_size]
585	mario79	399	mov edi,[cache_ide3_search_start]
580	mario79	400	ret
		401	.ide3_appl_data:
		402	mov ecx,[cache_ide3_appl_sad_size]
		403	mov edi,[cache_ide3_appl_search_start]
		404	ret
709	diamond	405	.noide:
		406	push eax
		407	mov eax,[hdpos]
		408	sub eax,80h
		409	cmp byte [BiosDisksData+eax*4+2], -1
		410	jz @f
		411	movzx eax,byte [BiosDisksData+eax*4+2]
		412	imul eax,cache_ide1-cache_ide0
		413	add eax,cache_ide0
		414	jmp .get
		415	@@:
		416	imul eax,cache_ide1-cache_ide0
		417	add eax,BiosDiskCaches
		418	.get:
		419	cmp [hdd_appl_data],0
		420	jne .bd_appl_data
		421	mov ecx,[cache_ide0_system_sad_size-cache_ide0+eax]
		422	mov edi,[cache_ide0_search_start-cache_ide0+eax]
		423	pop eax
		424	ret
		425	.bd_appl_data:
		426	mov ecx,[cache_ide0_appl_sad_size-cache_ide0+eax]
		427	mov edi,[cache_ide0_appl_search_start-cache_ide0+eax]
		428	pop eax
		429	ret
580	mario79	430	;--------------------------------------------------------------------
		431	align 4
		432	calculate_cache_4:
		433	; cmp edi,cache_max
		434	; 1 - IDE0 ... 4 - IDE3
		435	.ide0:
		436	cmp [hdpos],1
		437	jne .ide1
		438	cmp [hdd_appl_data],0
		439	jne .ide0_appl_data
		440	cmp edi,[cache_ide0_system_sad_size]
		441	ret
		442	.ide0_appl_data:
		443	cmp edi,[cache_ide0_appl_sad_size]
		444	ret
		445	.ide1:
		446	cmp [hdpos],2
		447	jne .ide2
		448	cmp [hdd_appl_data],0
		449	jne .ide1_appl_data
		450	cmp edi,[cache_ide1_system_sad_size]
		451	ret
		452	.ide1_appl_data:
		453	cmp edi,[cache_ide1_appl_sad_size]
		454	ret
		455	.ide2:
		456	cmp [hdpos],3
		457	jne .ide3
		458	cmp [hdd_appl_data],0
		459	jne .ide2_appl_data
		460	cmp edi,[cache_ide2_system_sad_size]
		461	ret
		462	.ide2_appl_data:
		463	cmp edi,[cache_ide2_appl_sad_size]
		464	ret
		465	.ide3:
709	diamond	466	cmp [hdpos],4
		467	jne .noide
580	mario79	468	cmp [hdd_appl_data],0
		469	jne .ide3_appl_data
		470	cmp edi,[cache_ide3_system_sad_size]
		471	ret
		472	.ide3_appl_data:
		473	cmp edi,[cache_ide3_appl_sad_size]
		474	ret
709	diamond	475	.noide:
		476	push eax
		477	mov eax,[hdpos]
		478	sub eax,80h
		479	cmp byte [BiosDisksData+eax*4+2], -1
		480	jz @f
		481	movzx eax,byte [BiosDisksData+eax*4+2]
		482	imul eax,cache_ide1-cache_ide0
		483	add eax,cache_ide0
		484	jmp .get
		485	@@:
		486	imul eax,cache_ide1-cache_ide0
		487	add eax,BiosDiskCaches
		488	.get:
		489	cmp [hdd_appl_data],0
		490	jne .bd_appl_data
		491	cmp edi,[cache_ide0_system_sad_size-cache_ide0+eax]
		492	pop eax
		493	ret
		494	.bd_appl_data:
		495	cmp edi,[cache_ide0_appl_sad_size-cache_ide0+eax]
		496	pop eax
		497	ret
		498
580	mario79	499	;--------------------------------------------------------------------
		500	align 4
		501	calculate_cache_5:
		502	; mov [cache_search_start],edi
		503	; 1 - IDE0 ... 4 - IDE3
		504	.ide0:
		505	cmp [hdpos],1
		506	jne .ide1
		507	cmp [hdd_appl_data],0
		508	jne .ide0_appl_data
585	mario79	509	mov [cache_ide0_search_start],edi
580	mario79	510	ret
		511	.ide0_appl_data:
		512	mov [cache_ide0_appl_search_start],edi
		513	ret
		514	.ide1:
		515	cmp [hdpos],2
		516	jne .ide2
		517	cmp [hdd_appl_data],0
		518	jne .ide1_appl_data
		519	mov [cache_ide1_search_start],edi
		520	ret
		521	.ide1_appl_data:
		522	mov [cache_ide1_appl_search_start],edi
		523	ret
		524	.ide2:
		525	cmp [hdpos],3
		526	jne .ide3
		527	cmp [hdd_appl_data],0
		528	jne .ide2_appl_data
		529	mov [cache_ide2_search_start],edi
		530	ret
		531	.ide2_appl_data:
		532	mov [cache_ide2_appl_search_start],edi
		533	ret
		534	.ide3:
709	diamond	535	cmp [hdpos],4
		536	jne .noide
580	mario79	537	cmp [hdd_appl_data],0
		538	jne .ide3_appl_data
585	mario79	539	mov [cache_ide3_search_start],edi
580	mario79	540	ret
		541	.ide3_appl_data:
		542	mov [cache_ide3_appl_search_start],edi
		543	ret
709	diamond	544	.noide:
		545	push eax
		546	mov eax,[hdpos]
		547	sub eax,80h
		548	cmp byte [BiosDisksData+eax*4+2], -1
		549	jz @f
		550	movzx eax,byte [BiosDisksData+eax*4+2]
		551	imul eax,cache_ide1-cache_ide0
		552	add eax,cache_ide0
		553	jmp .get
		554	@@:
		555	imul eax,cache_ide1-cache_ide0
		556	add eax,BiosDiskCaches
		557	.get:
		558	cmp [hdd_appl_data],0
		559	jne .bd_appl_data
		560	mov [cache_ide0_search_start-cache_ide0+eax],edi
		561	pop eax
		562	ret
		563	.bd_appl_data:
		564	mov [cache_ide0_appl_search_start-cache_ide0+eax],edi
		565	pop eax
		566	ret
585	mario79	567
580	mario79	568	;--------------------------------------------------------------------
		569	align 4
585	mario79	570	find_empty_slot_CD_cache:
		571	;-----------------------------------------------------------
		572	; find empty or read slot, flush cache if next 10% is used by write
		573	; output : edi = cache slot
		574	;-----------------------------------------------------------
		575	.search_again:
		576	call cd_calculate_cache_3
		577	.search_for_empty:
		578	inc edi
		579	call cd_calculate_cache_4
		580	jbe .inside_cache
		581	mov edi,1
		582	.inside_cache:
		583	call cd_calculate_cache_5
580	mario79	584	ret
585	mario79	585	;--------------------------------------------------------------------
		586	clear_CD_cache:
		587	pusha
		588	.ide0:
		589	xor eax,eax
		590	cmp [cdpos],1
		591	jne .ide1
		592	mov [cache_ide0_search_start],eax
		593	mov ecx,[cache_ide0_system_sad_size]
		594	mov edi,[cache_ide0_pointer]
		595	call .clear
		596	mov [cache_ide0_appl_search_start],eax
		597	mov ecx,[cache_ide0_appl_sad_size]
		598	mov edi,[cache_ide0_data_pointer]
		599	jmp .continue
		600	.ide1:
		601	cmp [cdpos],2
		602	jne .ide2
		603	mov [cache_ide1_search_start],eax
		604	mov ecx,[cache_ide1_system_sad_size]
		605	mov edi,[cache_ide1_pointer]
		606	call .clear
		607	mov [cache_ide1_appl_search_start],eax
		608	mov ecx,[cache_ide1_appl_sad_size]
		609	mov edi,[cache_ide1_data_pointer]
		610	jmp .continue
		611	.ide2:
		612	cmp [cdpos],3
		613	jne .ide3
		614	mov [cache_ide2_search_start],eax
		615	mov ecx,[cache_ide2_system_sad_size]
		616	mov edi,[cache_ide2_pointer]
		617	call .clear
		618	mov [cache_ide2_appl_search_start],eax
		619	mov ecx,[cache_ide2_appl_sad_size]
		620	mov edi,[cache_ide2_data_pointer]
		621	jmp .continue
		622	.ide3:
		623	mov [cache_ide3_search_start],eax
		624	mov ecx,[cache_ide3_system_sad_size]
		625	mov edi,[cache_ide3_pointer]
		626	call .clear
		627	mov [cache_ide3_appl_search_start],eax
		628	mov ecx,[cache_ide3_appl_sad_size]
		629	mov edi,[cache_ide3_data_pointer]
		630	.continue:
		631	call .clear
		632	popa
		633	ret
		634	.clear:
		635	shl ecx,1
		636	cld
		637	rep stosd
		638	ret
		639	;--------------------------------------------------------------------
		640	align 4
		641	cd_calculate_cache:
		642	; mov ecx,cache_max ; entries in cache
		643	; mov esi,HD_CACHE+8
		644
		645	; 1 - IDE0 ... 4 - IDE3
		646	.ide0:
		647	cmp [cdpos],1
		648	jne .ide1
		649	cmp [cd_appl_data],0
		650	jne .ide0_appl_data
		651	mov ecx,[cache_ide0_system_sad_size]
		652	mov esi,[cache_ide0_pointer]
		653	ret
		654	.ide0_appl_data:
		655	mov ecx,[cache_ide0_appl_sad_size]
		656	mov esi,[cache_ide0_data_pointer]
		657	ret
		658	.ide1:
		659	cmp [cdpos],2
		660	jne .ide2
		661	cmp [cd_appl_data],0
		662	jne .ide1_appl_data
		663	mov ecx,[cache_ide1_system_sad_size]
		664	mov esi,[cache_ide1_pointer]
		665	ret
		666	.ide1_appl_data:
		667	mov ecx,[cache_ide1_appl_sad_size]
		668	mov esi,[cache_ide1_data_pointer]
		669	ret
		670	.ide2:
		671	cmp [cdpos],3
		672	jne .ide3
		673	cmp [cd_appl_data],0
		674	jne .ide2_appl_data
		675	mov ecx,[cache_ide2_system_sad_size]
		676	mov esi,[cache_ide2_pointer]
		677	ret
		678	.ide2_appl_data:
		679	mov ecx,[cache_ide2_appl_sad_size]
		680	mov esi,[cache_ide2_data_pointer]
		681	ret
		682	.ide3:
		683	cmp [cd_appl_data],0
		684	jne .ide3_appl_data
		685	mov ecx,[cache_ide3_system_sad_size]
		686	mov esi,[cache_ide3_pointer]
		687	ret
		688	.ide3_appl_data:
		689	mov ecx,[cache_ide3_appl_sad_size]
		690	mov esi,[cache_ide3_data_pointer]
		691	ret
		692	;--------------------------------------------------------------------
		693	align 4
		694	cd_calculate_cache_1:
		695	; lea esi,[edi*8+HD_CACHE]
		696	; 1 - IDE0 ... 4 - IDE3
		697	.ide0:
		698	cmp [cdpos],1
		699	jne .ide1
		700	cmp [cd_appl_data],0
		701	jne .ide0_appl_data
		702	mov esi,[cache_ide0_pointer]
		703	ret
		704	.ide0_appl_data:
		705	mov esi,[cache_ide0_data_pointer]
		706	ret
		707	.ide1:
		708	cmp [cdpos],2
		709	jne .ide2
		710	cmp [cd_appl_data],0
		711	jne .ide1_appl_data
		712	mov esi,[cache_ide1_pointer]
		713	ret
		714	.ide1_appl_data:
		715	mov esi,[cache_ide1_data_pointer]
		716	ret
		717	.ide2:
		718	cmp [cdpos],3
		719	jne .ide3
		720	cmp [cd_appl_data],0
		721	jne .ide2_appl_data
		722	mov esi,[cache_ide2_pointer]
		723	ret
		724	.ide2_appl_data:
		725	mov esi,[cache_ide2_data_pointer]
		726	ret
		727	.ide3:
		728	cmp [cd_appl_data],0
		729	jne .ide3_appl_data
		730	mov esi,[cache_ide3_pointer]
		731	ret
		732	.ide3_appl_data:
		733	mov esi,[cache_ide3_data_pointer]
		734	ret
		735	;--------------------------------------------------------------------
		736	align 4
		737	cd_calculate_cache_2:
		738	; add esi,HD_CACHE+65536
		739	; 1 - IDE0 ... 4 - IDE3
		740	.ide0:
		741	cmp [cdpos],1
		742	jne .ide1
		743	cmp [cd_appl_data],0
		744	jne .ide0_appl_data
		745	mov eax,[cache_ide0_system_data]
		746	ret
		747	.ide0_appl_data:
		748	mov eax,[cache_ide0_appl_data]
		749	ret
		750	.ide1:
		751	cmp [cdpos],2
		752	jne .ide2
		753	cmp [cd_appl_data],0
		754	jne .ide1_appl_data
		755	mov eax,[cache_ide1_system_data]
		756	ret
		757	.ide1_appl_data:
		758	mov eax,[cache_ide1_appl_data]
		759	ret
		760	.ide2:
		761	cmp [cdpos],3
		762	jne .ide3
		763	cmp [cd_appl_data],0
		764	jne .ide2_appl_data
		765	mov eax,[cache_ide2_system_data]
		766	ret
		767	.ide2_appl_data:
		768	mov eax,[cache_ide2_appl_data]
		769	ret
		770	.ide3:
		771	cmp [cd_appl_data],0
		772	jne .ide3_appl_data
		773	mov eax,[cache_ide3_system_data]
		774	ret
		775	.ide3_appl_data:
		776	mov eax,[cache_ide3_appl_data]
		777	ret
		778	;--------------------------------------------------------------------
		779	align 4
		780	cd_calculate_cache_3:
		781	; mov ecx,cache_max*10/100
		782	; mov edi,[cache_search_start]
		783
		784	; 1 - IDE0 ... 4 - IDE3
		785	.ide0:
		786	cmp [cdpos],1
		787	jne .ide1
		788	cmp [cd_appl_data],0
		789	jne .ide0_appl_data
		790	mov edi,[cache_ide0_search_start]
		791	ret
		792	.ide0_appl_data:
		793	mov edi,[cache_ide0_appl_search_start]
		794	ret
		795	.ide1:
		796	cmp [cdpos],2
		797	jne .ide2
		798	cmp [cd_appl_data],0
		799	jne .ide1_appl_data
		800	mov edi,[cache_ide1_search_start]
		801	ret
		802	.ide1_appl_data:
		803	mov edi,[cache_ide1_appl_search_start]
		804	ret
		805	.ide2:
		806	cmp [cdpos],3
		807	jne .ide3
		808	cmp [cd_appl_data],0
		809	jne .ide2_appl_data
		810	mov edi,[cache_ide2_search_start]
		811	ret
		812	.ide2_appl_data:
		813	mov edi,[cache_ide2_appl_search_start]
		814	ret
		815	.ide3:
		816	cmp [cd_appl_data],0
		817	jne .ide3_appl_data
		818	mov edi,[cache_ide3_search_start]
		819	ret
		820	.ide3_appl_data:
		821	mov edi,[cache_ide3_appl_search_start]
		822	ret
		823	;--------------------------------------------------------------------
		824	align 4
		825	cd_calculate_cache_4:
		826	; cmp edi,cache_max
		827	; 1 - IDE0 ... 4 - IDE3
		828	.ide0:
		829	cmp [cdpos],1
		830	jne .ide1
		831	cmp [cd_appl_data],0
		832	jne .ide0_appl_data
		833	cmp edi,[cache_ide0_system_sad_size]
		834	ret
		835	.ide0_appl_data:
		836	cmp edi,[cache_ide0_appl_sad_size]
		837	ret
		838	.ide1:
		839	cmp [cdpos],2
		840	jne .ide2
		841	cmp [cd_appl_data],0
		842	jne .ide1_appl_data
		843	cmp edi,[cache_ide1_system_sad_size]
		844	ret
		845	.ide1_appl_data:
		846	cmp edi,[cache_ide1_appl_sad_size]
		847	ret
		848	.ide2:
		849	cmp [cdpos],3
		850	jne .ide3
		851	cmp [cd_appl_data],0
		852	jne .ide2_appl_data
		853	cmp edi,[cache_ide2_system_sad_size]
		854	ret
		855	.ide2_appl_data:
		856	cmp edi,[cache_ide2_appl_sad_size]
		857	ret
		858	.ide3:
		859	cmp [cd_appl_data],0
		860	jne .ide3_appl_data
		861	cmp edi,[cache_ide3_system_sad_size]
		862	ret
		863	.ide3_appl_data:
		864	cmp edi,[cache_ide3_appl_sad_size]
		865	ret
		866	;--------------------------------------------------------------------
		867	align 4
		868	cd_calculate_cache_5:
		869	; mov [cache_search_start],edi
		870	; 1 - IDE0 ... 4 - IDE3
		871	.ide0:
		872	cmp [cdpos],1
		873	jne .ide1
		874	cmp [cd_appl_data],0
		875	jne .ide0_appl_data
		876	mov [cache_ide0_search_start],edi
		877	ret
		878	.ide0_appl_data:
		879	mov [cache_ide0_appl_search_start],edi
		880	ret
		881	.ide1:
		882	cmp [cdpos],2
		883	jne .ide2
		884	cmp [cd_appl_data],0
		885	jne .ide1_appl_data
		886	mov [cache_ide1_search_start],edi
		887	ret
		888	.ide1_appl_data:
		889	mov [cache_ide1_appl_search_start],edi
		890	ret
		891	.ide2:
		892	cmp [cdpos],3
		893	jne .ide3
		894	cmp [cd_appl_data],0
		895	jne .ide2_appl_data
		896	mov [cache_ide2_search_start],edi
		897	ret
		898	.ide2_appl_data:
		899	mov [cache_ide2_appl_search_start],edi
		900	ret
		901	.ide3:
		902	cmp [cd_appl_data],0
		903	jne .ide3_appl_data
		904	mov [cache_ide3_search_start],edi
		905	ret
		906	.ide3_appl_data:
		907	mov [cache_ide3_appl_search_start],edi
		908	ret
		909	;--------------------------------------------------------------------
		910	;align 4
		911	;calculate_linear_to_real:
		912	; shr eax, 12
		913	; mov eax, [page_tabs+eax*4]
		914	; and eax, 0xFFFFF000
		915	; ret

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(root)/kernel/trunk/blkdev/ide_cache.inc – Rev 709