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


;**************************************************************************
;
;   [cache_ide[X]_pointer]
;   or [cache_ide[X]_data_pointer]  first entry in cache list
;
;            +0   - lba sector
;            +4   - state of cache sector
;                   0 = empty
;                   1 = used for read  ( same as in hd )
;                   2 = used for write ( differs from hd )
;
;  [cache_ide[X]_system_data]
;  or [cache_ide[x]_appl_data] - cache entries
;
;**************************************************************************
 
$Revision: 0 $
 
 
align 4
write_cache:
;-----------------------------------------------------------
; write all changed sectors to disk
;-----------------------------------------------------------
    push  eax ecx edx esi edi
 
    ; write difference ( 2 ) from cache to hd
    call  calculate_cache
    add   esi,8
    mov   edi,1
write_cache_more:
    cmp   dword [esi+4],2	; if cache slot is not different
    jne   .write_chain
    mov   dword [esi+4],1	; same as in hd
    mov   eax,[esi]		; eax = sector to write
    cmp   eax,[PARTITION_START]
    jb	  danger
    cmp   eax,[PARTITION_END]
    ja	  danger
        cmp     [hdpos], 0x80
        jae     @f
; DMA write is permitted only if [allow_dma_access]=1
	cmp	[allow_dma_access], 2
	jae	.nodma
	cmp	[dma_hdd], 1
	jnz	.nodma
@@:
; ¡ê¥¤¨­ï¥¬ § ¯¨áì æ¥¯®çª¨ ¯®á«¥¤®¢ â¥«ì­ëå á¥ªâ®à®¢ ¢ ®¤­® ®¡à é¥­¨¥ ª ¤¨áªã
	cmp	ecx, 1
	jz	.nonext
	cmp	dword [esi+8+4], 2
	jnz	.nonext
	push	eax
	inc	eax
	cmp	eax, [esi+8]
	pop	eax
	jnz	.nonext
	cmp	[cache_chain_started], 1
	jz	@f
	mov	[cache_chain_started], 1
	mov	[cache_chain_size], 0
	mov	[cache_chain_pos], edi
	mov	[cache_chain_ptr], esi
@@:
	inc	[cache_chain_size]
	cmp	[cache_chain_size], 16
	jnz	.continue
	jmp	.write_chain
.nonext:
	call	flush_cache_chain
	mov	[cache_chain_size], 1
	mov	[cache_chain_ptr], esi
	call	write_cache_sector
	jmp	.continue
.nodma:
	call	cache_write_pio
.write_chain:
	call	flush_cache_chain
.continue:
danger:
    add   esi,8
    inc   edi
    dec   ecx
    jnz   write_cache_more
	call	flush_cache_chain
 return_02:
    pop   edi esi edx ecx eax
    ret
 
flush_cache_chain:
	cmp	[cache_chain_started], 0
	jz	@f
	call	write_cache_chain
	mov	[cache_chain_started], 0
@@:
	ret
;--------------------------------------------------------------------
align 4
find_empty_slot:
;-----------------------------------------------------------
; find empty or read slot, flush cache if next 10% is used by write
; output : edi = cache slot
;-----------------------------------------------------------
;    push  ecx esi
 
search_again:
    call  calculate_cache_3
    shr   ecx,3
search_for_empty:
    inc   edi
    call  calculate_cache_4
    jbe   inside_cache
    mov   edi,1
inside_cache:
    push   esi
    call  calculate_cache_1
    cmp   dword [edi*8+esi+4],2
    pop   esi
    jb	  found_slot			; it's empty or read
    dec   ecx
    jnz   search_for_empty
    call  write_cache			; no empty slots found, write all
    cmp   [hd_error],0
    jne   found_slot_access_denied
    jmp   search_again			; and start again
found_slot:
    call  calculate_cache_5
found_slot_access_denied:
    ret
;--------------------------------------------------------------------
align 4
clear_hd_cache:
    mov   [fat_in_cache],-1
    mov   [fat_change],0
    ret
;--------------------------------------------------------------------
align 4
calculate_cache:
;    mov   ecx,cache_max         ; entries in cache
;    mov   esi,HD_CACHE+8
 
; 1 - IDE0 ... 4 - IDE3
.ide0:
    cmp    [hdpos],1
    jne    .ide1
    cmp    [hdd_appl_data],0
    jne    .ide0_appl_data
    mov    ecx,[cache_ide0_system_sad_size]
    mov    esi,[cache_ide0_pointer]
    ret
.ide0_appl_data:
    mov    ecx,[cache_ide0_appl_sad_size]
    mov    esi,[cache_ide0_data_pointer]
    ret
.ide1:
    cmp    [hdpos],2
    jne    .ide2
    cmp    [hdd_appl_data],0
    jne    .ide1_appl_data
    mov    ecx,[cache_ide1_system_sad_size]
    mov    esi,[cache_ide1_pointer]
    ret
.ide1_appl_data:
    mov    ecx,[cache_ide1_appl_sad_size]
    mov    esi,[cache_ide1_data_pointer]
    ret
.ide2:
    cmp    [hdpos],3
    jne    .ide3
    cmp    [hdd_appl_data],0
    jne    .ide2_appl_data
    mov    ecx,[cache_ide2_system_sad_size]
    mov    esi,[cache_ide2_pointer]
    ret
.ide2_appl_data:
    mov    ecx,[cache_ide2_appl_sad_size]
    mov    esi,[cache_ide2_data_pointer]
    ret
.ide3:
    cmp    [hdpos],4
    jne    .noide
    cmp    [hdd_appl_data],0
    jne    .ide3_appl_data
    mov    ecx,[cache_ide3_system_sad_size]
    mov    esi,[cache_ide3_pointer]
    ret
.ide3_appl_data:
    mov    ecx,[cache_ide3_appl_sad_size]
    mov    esi,[cache_ide3_data_pointer]
    ret
.noide:
    push   eax
    mov    eax,[hdpos]
    sub    eax,80h
    cmp    byte [BiosDisksData+eax*4+2], -1
    jz     @f
    movzx  eax,byte [BiosDisksData+eax*4+2]
    imul   eax,cache_ide1-cache_ide0
    add    eax,cache_ide0
    jmp    .get
@@:
    imul   eax,cache_ide1-cache_ide0
    add    eax,BiosDiskCaches
.get:
    cmp    [hdd_appl_data],0
    jne    .bd_appl_data
    mov    ecx,[cache_ide0_system_sad_size-cache_ide0+eax]
    mov    esi,[cache_ide0_pointer-cache_ide0+eax]
    pop    eax
    ret
.bd_appl_data:
    mov    ecx,[cache_ide0_appl_sad_size-cache_ide0+eax]
    mov    esi,[cache_ide0_data_pointer-cache_ide0+eax]
    pop    eax
    ret
;--------------------------------------------------------------------
align 4
calculate_cache_1:
;    lea   esi,[edi*8+HD_CACHE]
; 1 - IDE0 ... 4 - IDE3
.ide0:
    cmp    [hdpos],1
    jne    .ide1
    cmp    [hdd_appl_data],0
    jne    .ide0_appl_data
    mov    esi,[cache_ide0_pointer]
    ret
.ide0_appl_data:
    mov    esi,[cache_ide0_data_pointer]
    ret
.ide1:
    cmp    [hdpos],2
    jne    .ide2
    cmp    [hdd_appl_data],0
    jne    .ide1_appl_data
    mov    esi,[cache_ide1_pointer]
    ret
.ide1_appl_data:
    mov    esi,[cache_ide1_data_pointer]
    ret
.ide2:
    cmp    [hdpos],3
    jne    .ide3
    cmp    [hdd_appl_data],0
    jne    .ide2_appl_data
    mov    esi,[cache_ide2_pointer]
    ret
.ide2_appl_data:
    mov    esi,[cache_ide2_data_pointer]
    ret
.ide3:
    cmp    [hdpos],4
    jne    .noide
    cmp    [hdd_appl_data],0
    jne    .ide3_appl_data
    mov    esi,[cache_ide3_pointer]
    ret
.ide3_appl_data:
    mov    esi,[cache_ide3_data_pointer]
    ret
.noide:
    push   eax
    mov    eax,[hdpos]
    sub    eax,80h
    cmp    byte [BiosDisksData+eax*4+2], -1
    jz     @f
    movzx  eax,byte [BiosDisksData+eax*4+2]
    imul   eax,cache_ide1-cache_ide0
    add    eax,cache_ide0
    jmp    .get
@@:
    imul   eax,cache_ide1-cache_ide0
    add    eax,BiosDiskCaches
.get:
    cmp    [hdd_appl_data],0
    jne    .bd_appl_data
    mov    esi,[cache_ide0_pointer-cache_ide0+eax]
    pop    eax
    ret
.bd_appl_data:
    mov    esi,[cache_ide0_data_pointer-cache_ide0+eax]
    pop    eax
    ret
 
;--------------------------------------------------------------------
align 4
calculate_cache_2:
;    add   esi,HD_CACHE+65536
; 1 - IDE0 ... 4 - IDE3
.ide0:
    cmp    [hdpos],1
    jne    .ide1
    cmp    [hdd_appl_data],0
    jne    .ide0_appl_data
    mov    eax,[cache_ide0_system_data]
    ret
.ide0_appl_data:
    mov    eax,[cache_ide0_appl_data]
    ret
.ide1:
    cmp    [hdpos],2
    jne    .ide2
    cmp    [hdd_appl_data],0
    jne    .ide1_appl_data
    mov    eax,[cache_ide1_system_data]
    ret
.ide1_appl_data:
    mov    eax,[cache_ide1_appl_data]
    ret
.ide2:
    cmp    [hdpos],3
    jne    .ide3
    cmp    [hdd_appl_data],0
    jne    .ide2_appl_data
    mov    eax,[cache_ide2_system_data]
    ret
.ide2_appl_data:
    mov    eax,[cache_ide2_appl_data]
    ret
.ide3:
    cmp    [hdpos],4
    jne    .noide
    cmp    [hdd_appl_data],0
    jne    .ide3_appl_data
    mov    eax,[cache_ide3_system_data]
    ret
.ide3_appl_data:
    mov    eax,[cache_ide3_appl_data]
    ret
.noide:
    mov    eax,[hdpos]
    sub    eax,80h
    cmp    byte [BiosDisksData+eax*4+2], -1
    jz     @f
    movzx  eax,byte [BiosDisksData+eax*4+2]
    imul   eax,cache_ide1-cache_ide0
    add    eax,cache_ide0
    jmp    .get
@@:
    imul   eax,cache_ide1-cache_ide0
    add    eax,BiosDiskCaches
.get:
    cmp    [hdd_appl_data],0
    jne    .bd_appl_data
    mov    eax,[cache_ide0_system_data-cache_ide0+eax]
    ret
.bd_appl_data:
    mov    eax,[cache_ide0_appl_data-cache_ide0+eax]
    ret
;--------------------------------------------------------------------
align 4
calculate_cache_3:
;    mov   ecx,cache_max*10/100
;    mov   edi,[cache_search_start]
 
; 1 - IDE0 ... 4 - IDE3
.ide0:
    cmp    [hdpos],1
    jne    .ide1
    cmp    [hdd_appl_data],0
    jne    .ide0_appl_data
    mov    ecx,[cache_ide0_system_sad_size]
    mov    edi,[cache_ide0_search_start]
    ret
.ide0_appl_data:
    mov    ecx,[cache_ide0_appl_sad_size]
    mov    edi,[cache_ide0_appl_search_start]
    ret
.ide1:
    cmp    [hdpos],2
    jne    .ide2
    cmp    [hdd_appl_data],0
    jne    .ide1_appl_data
    mov    ecx,[cache_ide1_system_sad_size]
    mov    edi,[cache_ide1_search_start]
    ret
.ide1_appl_data:
    mov    ecx,[cache_ide1_appl_sad_size]
    mov    edi,[cache_ide1_appl_search_start]
    ret
.ide2:
    cmp    [hdpos],3
    jne    .ide3
    cmp    [hdd_appl_data],0
    jne    .ide2_appl_data
    mov    ecx,[cache_ide2_system_sad_size]
    mov    edi,[cache_ide2_search_start]
    ret
.ide2_appl_data:
    mov    ecx,[cache_ide2_appl_sad_size]
    mov    edi,[cache_ide2_appl_search_start]
    ret
.ide3:
    cmp    [hdpos],4
    jne    .noide
    cmp    [hdd_appl_data],0
    jne    .ide3_appl_data
    mov    ecx,[cache_ide3_system_sad_size]
    mov    edi,[cache_ide3_search_start]
    ret
.ide3_appl_data:
    mov    ecx,[cache_ide3_appl_sad_size]
    mov    edi,[cache_ide3_appl_search_start]
    ret
.noide:
    push   eax
    mov    eax,[hdpos]
    sub    eax,80h
    cmp    byte [BiosDisksData+eax*4+2], -1
    jz     @f
    movzx  eax,byte [BiosDisksData+eax*4+2]
    imul   eax,cache_ide1-cache_ide0
    add    eax,cache_ide0
    jmp    .get
@@:
    imul   eax,cache_ide1-cache_ide0
    add    eax,BiosDiskCaches
.get:
    cmp    [hdd_appl_data],0
    jne    .bd_appl_data
    mov    ecx,[cache_ide0_system_sad_size-cache_ide0+eax]
    mov    edi,[cache_ide0_search_start-cache_ide0+eax]
    pop    eax
    ret
.bd_appl_data:
    mov    ecx,[cache_ide0_appl_sad_size-cache_ide0+eax]
    mov    edi,[cache_ide0_appl_search_start-cache_ide0+eax]
    pop    eax
    ret
;--------------------------------------------------------------------
align 4
calculate_cache_4:
;    cmp   edi,cache_max
; 1 - IDE0 ... 4 - IDE3
.ide0:
    cmp    [hdpos],1
    jne    .ide1
    cmp    [hdd_appl_data],0
    jne    .ide0_appl_data
    cmp   edi,[cache_ide0_system_sad_size]
    ret
.ide0_appl_data:
    cmp   edi,[cache_ide0_appl_sad_size]
    ret
.ide1:
    cmp    [hdpos],2
    jne    .ide2
    cmp    [hdd_appl_data],0
    jne    .ide1_appl_data
    cmp   edi,[cache_ide1_system_sad_size]
    ret
.ide1_appl_data:
    cmp   edi,[cache_ide1_appl_sad_size]
    ret
.ide2:
    cmp    [hdpos],3
    jne    .ide3
    cmp    [hdd_appl_data],0
    jne    .ide2_appl_data
    cmp   edi,[cache_ide2_system_sad_size]
    ret
.ide2_appl_data:
    cmp   edi,[cache_ide2_appl_sad_size]
    ret
.ide3:
    cmp    [hdpos],4
    jne    .noide
    cmp    [hdd_appl_data],0
    jne    .ide3_appl_data
    cmp   edi,[cache_ide3_system_sad_size]
    ret
.ide3_appl_data:
    cmp   edi,[cache_ide3_appl_sad_size]
    ret
.noide:
    push   eax
    mov    eax,[hdpos]
    sub    eax,80h
    cmp    byte [BiosDisksData+eax*4+2], -1
    jz     @f
    movzx  eax,byte [BiosDisksData+eax*4+2]
    imul   eax,cache_ide1-cache_ide0
    add    eax,cache_ide0
    jmp    .get
@@:
    imul   eax,cache_ide1-cache_ide0
    add    eax,BiosDiskCaches
.get:
    cmp    [hdd_appl_data],0
    jne    .bd_appl_data
    cmp    edi,[cache_ide0_system_sad_size-cache_ide0+eax]
    pop    eax
    ret
.bd_appl_data:
    cmp    edi,[cache_ide0_appl_sad_size-cache_ide0+eax]
    pop    eax
    ret
 
;--------------------------------------------------------------------
align 4
calculate_cache_5:
;    mov   [cache_search_start],edi
; 1 - IDE0 ... 4 - IDE3
.ide0:
    cmp    [hdpos],1
    jne    .ide1
    cmp    [hdd_appl_data],0
    jne    .ide0_appl_data
    mov   [cache_ide0_search_start],edi
    ret
.ide0_appl_data:
    mov   [cache_ide0_appl_search_start],edi
    ret
.ide1:
    cmp    [hdpos],2
    jne    .ide2
    cmp    [hdd_appl_data],0
    jne    .ide1_appl_data
    mov   [cache_ide1_search_start],edi
    ret
.ide1_appl_data:
    mov   [cache_ide1_appl_search_start],edi
    ret
.ide2:
    cmp    [hdpos],3
    jne    .ide3
    cmp    [hdd_appl_data],0
    jne    .ide2_appl_data
    mov   [cache_ide2_search_start],edi
    ret
.ide2_appl_data:
    mov   [cache_ide2_appl_search_start],edi
    ret
.ide3:
    cmp    [hdpos],4
    jne    .noide
    cmp    [hdd_appl_data],0
    jne    .ide3_appl_data
    mov   [cache_ide3_search_start],edi
    ret
.ide3_appl_data:
    mov   [cache_ide3_appl_search_start],edi
    ret
.noide:
    push   eax
    mov    eax,[hdpos]
    sub    eax,80h
    cmp    byte [BiosDisksData+eax*4+2], -1
    jz     @f
    movzx  eax,byte [BiosDisksData+eax*4+2]
    imul   eax,cache_ide1-cache_ide0
    add    eax,cache_ide0
    jmp    .get
@@:
    imul   eax,cache_ide1-cache_ide0
    add    eax,BiosDiskCaches
.get:
    cmp    [hdd_appl_data],0
    jne    .bd_appl_data
    mov    [cache_ide0_search_start-cache_ide0+eax],edi
    pop    eax
    ret
.bd_appl_data:
    mov    [cache_ide0_appl_search_start-cache_ide0+eax],edi
    pop    eax
    ret
 
;--------------------------------------------------------------------
align 4
find_empty_slot_CD_cache:
;-----------------------------------------------------------
; find empty or read slot, flush cache if next 10% is used by write
; output : edi = cache slot
;-----------------------------------------------------------
.search_again:
    call  cd_calculate_cache_3
.search_for_empty:
    inc   edi
    call  cd_calculate_cache_4
    jbe   .inside_cache
    mov   edi,1
.inside_cache:
    call  cd_calculate_cache_5
    ret
;--------------------------------------------------------------------
clear_CD_cache:
    pusha
.ide0:
    xor   eax,eax
    cmp    [cdpos],1
    jne    .ide1
    mov    [cache_ide0_search_start],eax
    mov    ecx,[cache_ide0_system_sad_size]
    mov    edi,[cache_ide0_pointer]
    call   .clear
    mov    [cache_ide0_appl_search_start],eax
    mov    ecx,[cache_ide0_appl_sad_size]
    mov    edi,[cache_ide0_data_pointer]
    jmp    .continue
.ide1:
    cmp    [cdpos],2
    jne    .ide2
    mov    [cache_ide1_search_start],eax
    mov    ecx,[cache_ide1_system_sad_size]
    mov    edi,[cache_ide1_pointer]
    call   .clear
    mov    [cache_ide1_appl_search_start],eax
    mov    ecx,[cache_ide1_appl_sad_size]
    mov    edi,[cache_ide1_data_pointer]
    jmp    .continue
.ide2:
    cmp    [cdpos],3
    jne    .ide3
    mov    [cache_ide2_search_start],eax
    mov    ecx,[cache_ide2_system_sad_size]
    mov    edi,[cache_ide2_pointer]
    call   .clear
    mov    [cache_ide2_appl_search_start],eax
    mov    ecx,[cache_ide2_appl_sad_size]
    mov    edi,[cache_ide2_data_pointer]
    jmp    .continue
.ide3:
    mov    [cache_ide3_search_start],eax
    mov    ecx,[cache_ide3_system_sad_size]
    mov    edi,[cache_ide3_pointer]
    call   .clear
    mov    [cache_ide3_appl_search_start],eax
    mov    ecx,[cache_ide3_appl_sad_size]
    mov    edi,[cache_ide3_data_pointer]
.continue:
    call   .clear
    popa
    ret
.clear:
    shl   ecx,1
    cld
    rep   stosd
    ret
;--------------------------------------------------------------------
align 4
cd_calculate_cache:
;    mov   ecx,cache_max         ; entries in cache
;    mov   esi,HD_CACHE+8
 
; 1 - IDE0 ... 4 - IDE3
.ide0:
    cmp    [cdpos],1
    jne    .ide1
    cmp    [cd_appl_data],0
    jne    .ide0_appl_data
    mov    ecx,[cache_ide0_system_sad_size]
    mov    esi,[cache_ide0_pointer]
    ret
.ide0_appl_data:
    mov    ecx,[cache_ide0_appl_sad_size]
    mov    esi,[cache_ide0_data_pointer]
    ret
.ide1:
    cmp    [cdpos],2
    jne    .ide2
    cmp    [cd_appl_data],0
    jne    .ide1_appl_data
    mov    ecx,[cache_ide1_system_sad_size]
    mov    esi,[cache_ide1_pointer]
    ret
.ide1_appl_data:
    mov    ecx,[cache_ide1_appl_sad_size]
    mov    esi,[cache_ide1_data_pointer]
    ret
.ide2:
    cmp    [cdpos],3
    jne    .ide3
    cmp    [cd_appl_data],0
    jne    .ide2_appl_data
    mov    ecx,[cache_ide2_system_sad_size]
    mov    esi,[cache_ide2_pointer]
    ret
.ide2_appl_data:
    mov    ecx,[cache_ide2_appl_sad_size]
    mov    esi,[cache_ide2_data_pointer]
    ret
.ide3:
    cmp    [cd_appl_data],0
    jne    .ide3_appl_data
    mov    ecx,[cache_ide3_system_sad_size]
    mov    esi,[cache_ide3_pointer]
    ret
.ide3_appl_data:
    mov    ecx,[cache_ide3_appl_sad_size]
    mov    esi,[cache_ide3_data_pointer]
    ret
;--------------------------------------------------------------------
align 4
cd_calculate_cache_1:
;    lea   esi,[edi*8+HD_CACHE]
; 1 - IDE0 ... 4 - IDE3
.ide0:
    cmp    [cdpos],1
    jne    .ide1
    cmp    [cd_appl_data],0
    jne    .ide0_appl_data
    mov    esi,[cache_ide0_pointer]
    ret
.ide0_appl_data:
    mov    esi,[cache_ide0_data_pointer]
    ret
.ide1:
    cmp    [cdpos],2
    jne    .ide2
    cmp    [cd_appl_data],0
    jne    .ide1_appl_data
    mov    esi,[cache_ide1_pointer]
    ret
.ide1_appl_data:
    mov    esi,[cache_ide1_data_pointer]
    ret
.ide2:
    cmp    [cdpos],3
    jne    .ide3
    cmp    [cd_appl_data],0
    jne    .ide2_appl_data
    mov    esi,[cache_ide2_pointer]
    ret
.ide2_appl_data:
    mov    esi,[cache_ide2_data_pointer]
    ret
.ide3:
    cmp    [cd_appl_data],0
    jne    .ide3_appl_data
    mov    esi,[cache_ide3_pointer]
    ret
.ide3_appl_data:
    mov    esi,[cache_ide3_data_pointer]
    ret
;--------------------------------------------------------------------
align 4
cd_calculate_cache_2:
;    add   esi,HD_CACHE+65536
; 1 - IDE0 ... 4 - IDE3
.ide0:
    cmp    [cdpos],1
    jne    .ide1
    cmp    [cd_appl_data],0
    jne    .ide0_appl_data
    mov    eax,[cache_ide0_system_data]
    ret
.ide0_appl_data:
    mov    eax,[cache_ide0_appl_data]
    ret
.ide1:
    cmp    [cdpos],2
    jne    .ide2
    cmp    [cd_appl_data],0
    jne    .ide1_appl_data
    mov    eax,[cache_ide1_system_data]
    ret
.ide1_appl_data:
    mov    eax,[cache_ide1_appl_data]
    ret
.ide2:
    cmp    [cdpos],3
    jne    .ide3
    cmp    [cd_appl_data],0
    jne    .ide2_appl_data
    mov    eax,[cache_ide2_system_data]
    ret
.ide2_appl_data:
    mov    eax,[cache_ide2_appl_data]
    ret
.ide3:
    cmp    [cd_appl_data],0
    jne    .ide3_appl_data
    mov    eax,[cache_ide3_system_data]
    ret
.ide3_appl_data:
    mov    eax,[cache_ide3_appl_data]
    ret
;--------------------------------------------------------------------
align 4
cd_calculate_cache_3:
;    mov   ecx,cache_max*10/100
;    mov   edi,[cache_search_start]
 
; 1 - IDE0 ... 4 - IDE3
.ide0:
    cmp    [cdpos],1
    jne    .ide1
    cmp    [cd_appl_data],0
    jne    .ide0_appl_data
    mov    edi,[cache_ide0_search_start]
    ret
.ide0_appl_data:
    mov    edi,[cache_ide0_appl_search_start]
    ret
.ide1:
    cmp    [cdpos],2
    jne    .ide2
    cmp    [cd_appl_data],0
    jne    .ide1_appl_data
    mov    edi,[cache_ide1_search_start]
    ret
.ide1_appl_data:
    mov    edi,[cache_ide1_appl_search_start]
    ret
.ide2:
    cmp    [cdpos],3
    jne    .ide3
    cmp    [cd_appl_data],0
    jne    .ide2_appl_data
    mov    edi,[cache_ide2_search_start]
    ret
.ide2_appl_data:
    mov    edi,[cache_ide2_appl_search_start]
    ret
.ide3:
    cmp    [cd_appl_data],0
    jne    .ide3_appl_data
    mov    edi,[cache_ide3_search_start]
    ret
.ide3_appl_data:
    mov    edi,[cache_ide3_appl_search_start]
    ret
;--------------------------------------------------------------------
align 4
cd_calculate_cache_4:
;    cmp   edi,cache_max
; 1 - IDE0 ... 4 - IDE3
.ide0:
    cmp    [cdpos],1
    jne    .ide1
    cmp    [cd_appl_data],0
    jne    .ide0_appl_data
    cmp   edi,[cache_ide0_system_sad_size]
    ret
.ide0_appl_data:
    cmp   edi,[cache_ide0_appl_sad_size]
    ret
.ide1:
    cmp    [cdpos],2
    jne    .ide2
    cmp    [cd_appl_data],0
    jne    .ide1_appl_data
    cmp   edi,[cache_ide1_system_sad_size]
    ret
.ide1_appl_data:
    cmp   edi,[cache_ide1_appl_sad_size]
    ret
.ide2:
    cmp    [cdpos],3
    jne    .ide3
    cmp    [cd_appl_data],0
    jne    .ide2_appl_data
    cmp   edi,[cache_ide2_system_sad_size]
    ret
.ide2_appl_data:
    cmp   edi,[cache_ide2_appl_sad_size]
    ret
.ide3:
    cmp    [cd_appl_data],0
    jne    .ide3_appl_data
    cmp   edi,[cache_ide3_system_sad_size]
    ret
.ide3_appl_data:
    cmp   edi,[cache_ide3_appl_sad_size]
    ret
;--------------------------------------------------------------------
align 4
cd_calculate_cache_5:
;    mov   [cache_search_start],edi
; 1 - IDE0 ... 4 - IDE3
.ide0:
    cmp    [cdpos],1
    jne    .ide1
    cmp    [cd_appl_data],0
    jne    .ide0_appl_data
    mov   [cache_ide0_search_start],edi
    ret
.ide0_appl_data:
    mov   [cache_ide0_appl_search_start],edi
    ret
.ide1:
    cmp    [cdpos],2
    jne    .ide2
    cmp    [cd_appl_data],0
    jne    .ide1_appl_data
    mov   [cache_ide1_search_start],edi
    ret
.ide1_appl_data:
    mov   [cache_ide1_appl_search_start],edi
    ret
.ide2:
    cmp    [cdpos],3
    jne    .ide3
    cmp    [cd_appl_data],0
    jne    .ide2_appl_data
    mov   [cache_ide2_search_start],edi
    ret
.ide2_appl_data:
    mov   [cache_ide2_appl_search_start],edi
    ret
.ide3:
    cmp    [cd_appl_data],0
    jne    .ide3_appl_data
    mov   [cache_ide3_search_start],edi
    ret
.ide3_appl_data:
    mov   [cache_ide3_appl_search_start],edi
    ret
;--------------------------------------------------------------------
;align 4
;calculate_linear_to_real:
;    shr eax, 12
;    mov eax, [page_tabs+eax*4]
;    and eax, 0xFFFFF000
;    ret

Rev 593	Rev 709
1	;**************************************************************************	1	;**************************************************************************
2	;	2	;
3	; [cache_ide[X]_pointer]	3	; [cache_ide[X]_pointer]
4	; or [cache_ide[X]_data_pointer] first entry in cache list	4	; or [cache_ide[X]_data_pointer] first entry in cache list
5	;	5	;
6	; +0 - lba sector	6	; +0 - lba sector
7	; +4 - state of cache sector	7	; +4 - state of cache sector
8	; 0 = empty	8	; 0 = empty
9	; 1 = used for read ( same as in hd )	9	; 1 = used for read ( same as in hd )
10	; 2 = used for write ( differs from hd )	10	; 2 = used for write ( differs from hd )
11	;	11	;
12	; [cache_ide[X]_system_data]	12	; [cache_ide[X]_system_data]
13	; or [cache_ide[x]_appl_data] - cache entries	13	; or [cache_ide[x]_appl_data] - cache entries
14	;	14	;
15	;**************************************************************************	15	;**************************************************************************
16		16
17	$Revision: 0 $	17	$Revision: 0 $
18		18
19		19
20	align 4	20	align 4
21	write_cache:	21	write_cache:
22	;-----------------------------------------------------------	22	;-----------------------------------------------------------
23	; write all changed sectors to disk	23	; write all changed sectors to disk
24	;-----------------------------------------------------------	24	;-----------------------------------------------------------
25	push eax ecx edx esi edi	25	push eax ecx edx esi edi
26		26
27	; write difference ( 2 ) from cache to hd	27	; write difference ( 2 ) from cache to hd
28	call calculate_cache	28	call calculate_cache
29	add esi,8	29	add esi,8
30	mov edi,1	30	mov edi,1
31	write_cache_more:	31	write_cache_more:
32	cmp dword [esi+4],2 ; if cache slot is not different	32	cmp dword [esi+4],2 ; if cache slot is not different
33	jne .write_chain	33	jne .write_chain
34	mov dword [esi+4],1 ; same as in hd	34	mov dword [esi+4],1 ; same as in hd
35	mov eax,[esi] ; eax = sector to write	35	mov eax,[esi] ; eax = sector to write
36	cmp eax,[PARTITION_START]	36	cmp eax,[PARTITION_START]
37	jb danger	37	jb danger
38	cmp eax,[PARTITION_END]	38	cmp eax,[PARTITION_END]
39	ja danger	39	ja danger
-		40	cmp [hdpos], 0x80
-		41	jae @f
40	; DMA write is permitted only if [allow_dma_access]=1	42	; DMA write is permitted only if [allow_dma_access]=1
41	cmp [allow_dma_access], 2	43	cmp [allow_dma_access], 2
42	jae .nodma	44	jae .nodma
43	cmp [dma_hdd], 1	45	cmp [dma_hdd], 1
44	jnz .nodma	46	jnz .nodma
-		47	@@:
45	; ¡ê¥¤¨ï¥¬ § ¯¨áì æ¥¯®çª¨ ¯®á«¥¤®¢ â¥«ìëå á¥ªâ®à®¢ ¢ ®¤® ®¡à é¥¨¥ ª ¤¨áªã	48	; ¡ê¥¤¨ï¥¬ § ¯¨áì æ¥¯®çª¨ ¯®á«¥¤®¢ â¥«ìëå á¥ªâ®à®¢ ¢ ®¤® ®¡à é¥¨¥ ª ¤¨áªã
46	cmp ecx, 1	49	cmp ecx, 1
47	jz .nonext	50	jz .nonext
48	cmp dword [esi+8+4], 2	51	cmp dword [esi+8+4], 2
49	jnz .nonext	52	jnz .nonext
50	push eax	53	push eax
51	inc eax	54	inc eax
52	cmp eax, [esi+8]	55	cmp eax, [esi+8]
53	pop eax	56	pop eax
54	jnz .nonext	57	jnz .nonext
55	cmp [cache_chain_started], 1	58	cmp [cache_chain_started], 1
56	jz @f	59	jz @f
57	mov [cache_chain_started], 1	60	mov [cache_chain_started], 1
58	mov [cache_chain_size], 0	61	mov [cache_chain_size], 0
59	mov [cache_chain_pos], edi	62	mov [cache_chain_pos], edi
60	mov [cache_chain_ptr], esi	63	mov [cache_chain_ptr], esi
61	@@:	64	@@:
62	inc [cache_chain_size]	65	inc [cache_chain_size]
63	cmp [cache_chain_size], 64	66	cmp [cache_chain_size], 16
64	jnz .continue	67	jnz .continue
65	jmp .write_chain	68	jmp .write_chain
66	.nonext:	69	.nonext:
67	call flush_cache_chain	70	call flush_cache_chain
68	mov [cache_chain_size], 1	71	mov [cache_chain_size], 1
69	mov [cache_chain_ptr], esi	72	mov [cache_chain_ptr], esi
70	call write_cache_sector	73	call write_cache_sector
71	jmp .continue	74	jmp .continue
72	.nodma:	75	.nodma:
73	call cache_write_pio	76	call cache_write_pio
74	.write_chain:	77	.write_chain:
75	call flush_cache_chain	78	call flush_cache_chain
76	.continue:	79	.continue:
77	danger:	80	danger:
78	add esi,8	81	add esi,8
79	inc edi	82	inc edi
80	dec ecx	83	dec ecx
81	jnz write_cache_more	84	jnz write_cache_more
82	call flush_cache_chain	85	call flush_cache_chain
83	return_02:	86	return_02:
84	pop edi esi edx ecx eax	87	pop edi esi edx ecx eax
85	ret	88	ret
86		89
87	flush_cache_chain:	90	flush_cache_chain:
88	cmp [cache_chain_started], 0	91	cmp [cache_chain_started], 0
89	jz @f	92	jz @f
90	call write_cache_chain	93	call write_cache_chain
91	mov [cache_chain_started], 0	94	mov [cache_chain_started], 0
92	@@:	95	@@:
93	ret	96	ret
94	;--------------------------------------------------------------------	97	;--------------------------------------------------------------------
95	align 4	98	align 4
96	find_empty_slot:	99	find_empty_slot:
97	;-----------------------------------------------------------	100	;-----------------------------------------------------------
98	; find empty or read slot, flush cache if next 10% is used by write	101	; find empty or read slot, flush cache if next 10% is used by write
99	; output : edi = cache slot	102	; output : edi = cache slot
100	;-----------------------------------------------------------	103	;-----------------------------------------------------------
101	; push ecx esi	104	; push ecx esi
102		105
103	search_again:	106	search_again:
104	call calculate_cache_3	107	call calculate_cache_3
105	shr ecx,3	108	shr ecx,3
106	search_for_empty:	109	search_for_empty:
107	inc edi	110	inc edi
108	call calculate_cache_4	111	call calculate_cache_4
109	jbe inside_cache	112	jbe inside_cache
110	mov edi,1	113	mov edi,1
111	inside_cache:	114	inside_cache:
112	push esi	115	push esi
113	call calculate_cache_1	116	call calculate_cache_1
114	cmp dword [edi*8+esi+4],2	117	cmp dword [edi*8+esi+4],2
115	pop esi	118	pop esi
116	jb found_slot ; it's empty or read	119	jb found_slot ; it's empty or read
117	dec ecx	120	dec ecx
118	jnz search_for_empty	121	jnz search_for_empty
119	call write_cache ; no empty slots found, write all	122	call write_cache ; no empty slots found, write all
120	cmp [hd_error],0	123	cmp [hd_error],0
121	jne found_slot_access_denied	124	jne found_slot_access_denied
122	jmp search_again ; and start again	125	jmp search_again ; and start again
123	found_slot:	126	found_slot:
124	call calculate_cache_5	127	call calculate_cache_5
125	found_slot_access_denied:	128	found_slot_access_denied:
126	ret	129	ret
127	;--------------------------------------------------------------------	130	;--------------------------------------------------------------------
128	align 4	131	align 4
129	clear_hd_cache:	132	clear_hd_cache:
130	mov [fat_in_cache],-1	133	mov [fat_in_cache],-1
131	mov [fat_change],0	134	mov [fat_change],0
132	ret	135	ret
133	;--------------------------------------------------------------------	136	;--------------------------------------------------------------------
134	align 4	137	align 4
135	calculate_cache:	138	calculate_cache:
136	; mov ecx,cache_max ; entries in cache	139	; mov ecx,cache_max ; entries in cache
137	; mov esi,HD_CACHE+8	140	; mov esi,HD_CACHE+8
138		141
139	; 1 - IDE0 ... 4 - IDE3	142	; 1 - IDE0 ... 4 - IDE3
140	.ide0:	143	.ide0:
141	cmp [hdpos],1	144	cmp [hdpos],1
142	jne .ide1	145	jne .ide1
143	cmp [hdd_appl_data],0	146	cmp [hdd_appl_data],0
144	jne .ide0_appl_data	147	jne .ide0_appl_data
145	mov ecx,[cache_ide0_system_sad_size]	148	mov ecx,[cache_ide0_system_sad_size]
146	mov esi,[cache_ide0_pointer]	149	mov esi,[cache_ide0_pointer]
147	ret	150	ret
148	.ide0_appl_data:	151	.ide0_appl_data:
149	mov ecx,[cache_ide0_appl_sad_size]	152	mov ecx,[cache_ide0_appl_sad_size]
150	mov esi,[cache_ide0_data_pointer]	153	mov esi,[cache_ide0_data_pointer]
151	ret	154	ret
152	.ide1:	155	.ide1:
153	cmp [hdpos],2	156	cmp [hdpos],2
154	jne .ide2	157	jne .ide2
155	cmp [hdd_appl_data],0	158	cmp [hdd_appl_data],0
156	jne .ide1_appl_data	159	jne .ide1_appl_data
157	mov ecx,[cache_ide1_system_sad_size]	160	mov ecx,[cache_ide1_system_sad_size]
158	mov esi,[cache_ide1_pointer]	161	mov esi,[cache_ide1_pointer]
159	ret	162	ret
160	.ide1_appl_data:	163	.ide1_appl_data:
161	mov ecx,[cache_ide1_appl_sad_size]	164	mov ecx,[cache_ide1_appl_sad_size]
162	mov esi,[cache_ide1_data_pointer]	165	mov esi,[cache_ide1_data_pointer]
163	ret	166	ret
164	.ide2:	167	.ide2:
165	cmp [hdpos],3	168	cmp [hdpos],3
166	jne .ide3	169	jne .ide3
167	cmp [hdd_appl_data],0	170	cmp [hdd_appl_data],0
168	jne .ide2_appl_data	171	jne .ide2_appl_data
169	mov ecx,[cache_ide2_system_sad_size]	172	mov ecx,[cache_ide2_system_sad_size]
170	mov esi,[cache_ide2_pointer]	173	mov esi,[cache_ide2_pointer]
171	ret	174	ret
172	.ide2_appl_data:	175	.ide2_appl_data:
173	mov ecx,[cache_ide2_appl_sad_size]	176	mov ecx,[cache_ide2_appl_sad_size]
174	mov esi,[cache_ide2_data_pointer]	177	mov esi,[cache_ide2_data_pointer]
175	ret	178	ret
176	.ide3:	179	.ide3:
-		180	cmp [hdpos],4
-		181	jne .noide
177	cmp [hdd_appl_data],0	182	cmp [hdd_appl_data],0
178	jne .ide3_appl_data	183	jne .ide3_appl_data
179	mov ecx,[cache_ide3_system_sad_size]	184	mov ecx,[cache_ide3_system_sad_size]
180	mov esi,[cache_ide3_pointer]	185	mov esi,[cache_ide3_pointer]
181	ret	186	ret
182	.ide3_appl_data:	187	.ide3_appl_data:
183	mov ecx,[cache_ide3_appl_sad_size]	188	mov ecx,[cache_ide3_appl_sad_size]
184	mov esi,[cache_ide3_data_pointer]	189	mov esi,[cache_ide3_data_pointer]
185	ret	190	ret
-		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
186	;--------------------------------------------------------------------	216	;--------------------------------------------------------------------
187	align 4	217	align 4
188	calculate_cache_1:	218	calculate_cache_1:
189	; lea esi,[edi*8+HD_CACHE]	219	; lea esi,[edi*8+HD_CACHE]
190	; 1 - IDE0 ... 4 - IDE3	220	; 1 - IDE0 ... 4 - IDE3
191	.ide0:	221	.ide0:
192	cmp [hdpos],1	222	cmp [hdpos],1
193	jne .ide1	223	jne .ide1
194	cmp [hdd_appl_data],0	224	cmp [hdd_appl_data],0
195	jne .ide0_appl_data	225	jne .ide0_appl_data
196	mov esi,[cache_ide0_pointer]	226	mov esi,[cache_ide0_pointer]
197	ret	227	ret
198	.ide0_appl_data:	228	.ide0_appl_data:
199	mov esi,[cache_ide0_data_pointer]	229	mov esi,[cache_ide0_data_pointer]
200	ret	230	ret
201	.ide1:	231	.ide1:
202	cmp [hdpos],2	232	cmp [hdpos],2
203	jne .ide2	233	jne .ide2
204	cmp [hdd_appl_data],0	234	cmp [hdd_appl_data],0
205	jne .ide1_appl_data	235	jne .ide1_appl_data
206	mov esi,[cache_ide1_pointer]	236	mov esi,[cache_ide1_pointer]
207	ret	237	ret
208	.ide1_appl_data:	238	.ide1_appl_data:
209	mov esi,[cache_ide1_data_pointer]	239	mov esi,[cache_ide1_data_pointer]
210	ret	240	ret
211	.ide2:	241	.ide2:
212	cmp [hdpos],3	242	cmp [hdpos],3
213	jne .ide3	243	jne .ide3
214	cmp [hdd_appl_data],0	244	cmp [hdd_appl_data],0
215	jne .ide2_appl_data	245	jne .ide2_appl_data
216	mov esi,[cache_ide2_pointer]	246	mov esi,[cache_ide2_pointer]
217	ret	247	ret
218	.ide2_appl_data:	248	.ide2_appl_data:
219	mov esi,[cache_ide2_data_pointer]	249	mov esi,[cache_ide2_data_pointer]
220	ret	250	ret
221	.ide3:	251	.ide3:
-		252	cmp [hdpos],4
-		253	jne .noide
222	cmp [hdd_appl_data],0	254	cmp [hdd_appl_data],0
223	jne .ide3_appl_data	255	jne .ide3_appl_data
224	mov esi,[cache_ide3_pointer]	256	mov esi,[cache_ide3_pointer]
225	ret	257	ret
226	.ide3_appl_data:	258	.ide3_appl_data:
227	mov esi,[cache_ide3_data_pointer]	259	mov esi,[cache_ide3_data_pointer]
228	ret	260	ret
-		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
229	;--------------------------------------------------------------------	285	;--------------------------------------------------------------------
230	align 4	286	align 4
231	calculate_cache_2:	287	calculate_cache_2:
232	; add esi,HD_CACHE+65536	288	; add esi,HD_CACHE+65536
233	; 1 - IDE0 ... 4 - IDE3	289	; 1 - IDE0 ... 4 - IDE3
234	.ide0:	290	.ide0:
235	cmp [hdpos],1	291	cmp [hdpos],1
236	jne .ide1	292	jne .ide1
237	cmp [hdd_appl_data],0	293	cmp [hdd_appl_data],0
238	jne .ide0_appl_data	294	jne .ide0_appl_data
239	mov eax,[cache_ide0_system_data]	295	mov eax,[cache_ide0_system_data]
240	ret	296	ret
241	.ide0_appl_data:	297	.ide0_appl_data:
242	mov eax,[cache_ide0_appl_data]	298	mov eax,[cache_ide0_appl_data]
243	ret	299	ret
244	.ide1:	300	.ide1:
245	cmp [hdpos],2	301	cmp [hdpos],2
246	jne .ide2	302	jne .ide2
247	cmp [hdd_appl_data],0	303	cmp [hdd_appl_data],0
248	jne .ide1_appl_data	304	jne .ide1_appl_data
249	mov eax,[cache_ide1_system_data]	305	mov eax,[cache_ide1_system_data]
250	ret	306	ret
251	.ide1_appl_data:	307	.ide1_appl_data:
252	mov eax,[cache_ide1_appl_data]	308	mov eax,[cache_ide1_appl_data]
253	ret	309	ret
254	.ide2:	310	.ide2:
255	cmp [hdpos],3	311	cmp [hdpos],3
256	jne .ide3	312	jne .ide3
257	cmp [hdd_appl_data],0	313	cmp [hdd_appl_data],0
258	jne .ide2_appl_data	314	jne .ide2_appl_data
259	mov eax,[cache_ide2_system_data]	315	mov eax,[cache_ide2_system_data]
260	ret	316	ret
261	.ide2_appl_data:	317	.ide2_appl_data:
262	mov eax,[cache_ide2_appl_data]	318	mov eax,[cache_ide2_appl_data]
263	ret	319	ret
264	.ide3:	320	.ide3:
-		321	cmp [hdpos],4
-		322	jne .noide
265	cmp [hdd_appl_data],0	323	cmp [hdd_appl_data],0
266	jne .ide3_appl_data	324	jne .ide3_appl_data
267	mov eax,[cache_ide3_system_data]	325	mov eax,[cache_ide3_system_data]
268	ret	326	ret
269	.ide3_appl_data:	327	.ide3_appl_data:
270	mov eax,[cache_ide3_appl_data]	328	mov eax,[cache_ide3_appl_data]
271	ret	329	ret
-		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
272	;--------------------------------------------------------------------	350	;--------------------------------------------------------------------
273	align 4	351	align 4
274	calculate_cache_3:	352	calculate_cache_3:
275	; mov ecx,cache_max*10/100	353	; mov ecx,cache_max*10/100
276	; mov edi,[cache_search_start]	354	; mov edi,[cache_search_start]
277		355
278	; 1 - IDE0 ... 4 - IDE3	356	; 1 - IDE0 ... 4 - IDE3
279	.ide0:	357	.ide0:
280	cmp [hdpos],1	358	cmp [hdpos],1
281	jne .ide1	359	jne .ide1
282	cmp [hdd_appl_data],0	360	cmp [hdd_appl_data],0
283	jne .ide0_appl_data	361	jne .ide0_appl_data
284	mov ecx,[cache_ide0_system_sad_size]	362	mov ecx,[cache_ide0_system_sad_size]
285	mov edi,[cache_ide0_search_start]	363	mov edi,[cache_ide0_search_start]
286	ret	364	ret
287	.ide0_appl_data:	365	.ide0_appl_data:
288	mov ecx,[cache_ide0_appl_sad_size]	366	mov ecx,[cache_ide0_appl_sad_size]
289	mov edi,[cache_ide0_appl_search_start]	367	mov edi,[cache_ide0_appl_search_start]
290	ret	368	ret
291	.ide1:	369	.ide1:
292	cmp [hdpos],2	370	cmp [hdpos],2
293	jne .ide2	371	jne .ide2
294	cmp [hdd_appl_data],0	372	cmp [hdd_appl_data],0
295	jne .ide1_appl_data	373	jne .ide1_appl_data
296	mov ecx,[cache_ide1_system_sad_size]	374	mov ecx,[cache_ide1_system_sad_size]
297	mov edi,[cache_ide1_search_start]	375	mov edi,[cache_ide1_search_start]
298	ret	376	ret
299	.ide1_appl_data:	377	.ide1_appl_data:
300	mov ecx,[cache_ide1_appl_sad_size]	378	mov ecx,[cache_ide1_appl_sad_size]
301	mov edi,[cache_ide1_appl_search_start]	379	mov edi,[cache_ide1_appl_search_start]
302	ret	380	ret
303	.ide2:	381	.ide2:
304	cmp [hdpos],3	382	cmp [hdpos],3
305	jne .ide3	383	jne .ide3
306	cmp [hdd_appl_data],0	384	cmp [hdd_appl_data],0
307	jne .ide2_appl_data	385	jne .ide2_appl_data
308	mov ecx,[cache_ide2_system_sad_size]	386	mov ecx,[cache_ide2_system_sad_size]
309	mov edi,[cache_ide2_search_start]	387	mov edi,[cache_ide2_search_start]
310	ret	388	ret
311	.ide2_appl_data:	389	.ide2_appl_data:
312	mov ecx,[cache_ide2_appl_sad_size]	390	mov ecx,[cache_ide2_appl_sad_size]
313	mov edi,[cache_ide2_appl_search_start]	391	mov edi,[cache_ide2_appl_search_start]
314	ret	392	ret
315	.ide3:	393	.ide3:
-		394	cmp [hdpos],4
-		395	jne .noide
316	cmp [hdd_appl_data],0	396	cmp [hdd_appl_data],0
317	jne .ide3_appl_data	397	jne .ide3_appl_data
318	mov ecx,[cache_ide3_system_sad_size]	398	mov ecx,[cache_ide3_system_sad_size]
319	mov edi,[cache_ide3_search_start]	399	mov edi,[cache_ide3_search_start]
320	ret	400	ret
321	.ide3_appl_data:	401	.ide3_appl_data:
322	mov ecx,[cache_ide3_appl_sad_size]	402	mov ecx,[cache_ide3_appl_sad_size]
323	mov edi,[cache_ide3_appl_search_start]	403	mov edi,[cache_ide3_appl_search_start]
324	ret	404	ret
-		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
325	;--------------------------------------------------------------------	430	;--------------------------------------------------------------------
326	align 4	431	align 4
327	calculate_cache_4:	432	calculate_cache_4:
328	; cmp edi,cache_max	433	; cmp edi,cache_max
329	; 1 - IDE0 ... 4 - IDE3	434	; 1 - IDE0 ... 4 - IDE3
330	.ide0:	435	.ide0:
331	cmp [hdpos],1	436	cmp [hdpos],1
332	jne .ide1	437	jne .ide1
333	cmp [hdd_appl_data],0	438	cmp [hdd_appl_data],0
334	jne .ide0_appl_data	439	jne .ide0_appl_data
335	cmp edi,[cache_ide0_system_sad_size]	440	cmp edi,[cache_ide0_system_sad_size]
336	ret	441	ret
337	.ide0_appl_data:	442	.ide0_appl_data:
338	cmp edi,[cache_ide0_appl_sad_size]	443	cmp edi,[cache_ide0_appl_sad_size]
339	ret	444	ret
340	.ide1:	445	.ide1:
341	cmp [hdpos],2	446	cmp [hdpos],2
342	jne .ide2	447	jne .ide2
343	cmp [hdd_appl_data],0	448	cmp [hdd_appl_data],0
344	jne .ide1_appl_data	449	jne .ide1_appl_data
345	cmp edi,[cache_ide1_system_sad_size]	450	cmp edi,[cache_ide1_system_sad_size]
346	ret	451	ret
347	.ide1_appl_data:	452	.ide1_appl_data:
348	cmp edi,[cache_ide1_appl_sad_size]	453	cmp edi,[cache_ide1_appl_sad_size]
349	ret	454	ret
350	.ide2:	455	.ide2:
351	cmp [hdpos],3	456	cmp [hdpos],3
352	jne .ide3	457	jne .ide3
353	cmp [hdd_appl_data],0	458	cmp [hdd_appl_data],0
354	jne .ide2_appl_data	459	jne .ide2_appl_data
355	cmp edi,[cache_ide2_system_sad_size]	460	cmp edi,[cache_ide2_system_sad_size]
356	ret	461	ret
357	.ide2_appl_data:	462	.ide2_appl_data:
358	cmp edi,[cache_ide2_appl_sad_size]	463	cmp edi,[cache_ide2_appl_sad_size]
359	ret	464	ret
360	.ide3:	465	.ide3:
-		466	cmp [hdpos],4
-		467	jne .noide
361	cmp [hdd_appl_data],0	468	cmp [hdd_appl_data],0
362	jne .ide3_appl_data	469	jne .ide3_appl_data
363	cmp edi,[cache_ide3_system_sad_size]	470	cmp edi,[cache_ide3_system_sad_size]
364	ret	471	ret
365	.ide3_appl_data:	472	.ide3_appl_data:
366	cmp edi,[cache_ide3_appl_sad_size]	473	cmp edi,[cache_ide3_appl_sad_size]
367	ret	474	ret
-		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
368	;--------------------------------------------------------------------	499	;--------------------------------------------------------------------
369	align 4	500	align 4

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(root)/kernel/trunk/blkdev/ide_cache.inc – Rev 593 → 709