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The universal cache of IDE devices.

Browse Source 
Step 1:
1) Allocate of separate area for everyone IDE device.
2) Usage of the allocated areas for HDD. (Cache CD\DVD - not realized, but the memory for it is allocated. This be realized  in step 2).
3) The area of memory 0x80300000 - > 0x80400000 now is free and is not used.
4) The area of memory 0x80284000 - > 0x8028BFFF is used for HDD DMA.

git-svn-id: svn://kolibrios.org@580 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Marat Zakiyanov (Mario79) 2007-07-15 23:22:14 +00:00
parent 5f63bc470b
commit b229fdc2c2
8 changed files with 981 additions and 189 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

262
kernel/trunk/blkdev/hd_drv.inc
View File

@ -9,20 +9,6 @@ $Revision$
; Low-level driver for HDD access
; DMA support by Mario79
;**************************************************************************
;
; 0x600008 - 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 )
;
; +65536 - cache entries
;
;**************************************************************************
align 4
hd_read:
;-----------------------------------------------------------
@ -32,8 +18,11 @@ hd_read:
and [hd_error], 0
push ecx esi edi ; scan cache
mov ecx,cache_max ; entries in cache
mov esi,HD_CACHE+8
; mov ecx,cache_max ; entries in cache
; mov esi,HD_CACHE+8
call calculate_cache
add esi,8
mov edi,1
hdreadcache:
@ -64,8 +53,12 @@ hd_read:
.nodma:
call hd_read_pio
@@:
; lea esi,[edi*8+HD_CACHE]
; push eax
call calculate_cache_1
lea esi,[edi*8+esi]
; pop eax
lea esi,[edi*8+HD_CACHE]
mov [esi],eax ; sector number
mov dword [esi+4],1 ; hd read - mark as same as in hd
@ -73,7 +66,12 @@ hd_read:
mov esi,edi
shl esi,9
add esi,HD_CACHE+65536
; add esi,HD_CACHE+65536
push eax
call calculate_cache_2
add esi,eax
pop eax
mov edi,ebx
mov ecx,512/4
cld
@ -126,7 +124,12 @@ hd_read_pio:
cli
push edi
shl edi,9
add edi,HD_CACHE+65536
; add edi,HD_CACHE+65536
push eax
call calculate_cache_2
add edi,eax
pop eax
mov ecx,256
mov edx,[hdbase]
cld
@ -163,8 +166,11 @@ hd_write:
; check if the cache already has the sector and overwrite it
mov ecx,cache_max
mov esi,HD_CACHE+8
; mov ecx,cache_max
; mov esi,HD_CACHE+8
call calculate_cache
add esi,8
mov edi,1
hdwritecache:
@ -189,7 +195,12 @@ hd_write:
cmp [hd_error],0
jne hd_write_access_denied
lea esi,[edi*8+HD_CACHE]
; lea esi,[edi*8+HD_CACHE]
; push eax
call calculate_cache_1
lea esi,[edi*8+esi]
; pop eax
mov [esi],eax ; sector number
yes_in_cache_write:
@ -197,7 +208,12 @@ hd_write:
mov dword [esi+4],2 ; write - differs from hd
shl edi,9
add edi,HD_CACHE+65536
; add edi,HD_CACHE+65536
push eax
call calculate_cache_2
add edi,eax
pop eax
mov esi,ebx
mov ecx,512/4
cld
@ -206,98 +222,15 @@ hd_write:
pop edi esi ecx
ret
write_cache:
;-----------------------------------------------------------
; write all changed sectors to disk
;-----------------------------------------------------------
push eax ecx edx esi edi
; write difference ( 2 ) from cache to hd
mov ecx,cache_max
mov esi,HD_CACHE+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
; DMA write is permitted only if [allow_dma_access]=1
cmp [allow_dma_access], 2
jae .nodma
cmp [dma_hdd], 1
jnz .nodma
; Ž¡ê¥¤¨­ï¥¬ § ¯¨áì 楯®çª¨ ¯®á«¥¤®¢ â¥«ì­ëå ᥪâ®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], 64
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
cache_write_pio:
call disable_ide_int
; call disable_ide_int
call wait_for_hd_idle
cmp [hd_error],0
jne hd_write_error
; cli
cli
xor eax,eax
mov edx,[hdbase]
inc edx
@ -323,7 +256,7 @@ cache_write_pio:
inc edx
mov al,30h
out dx,al
; sti
sti
call wait_for_sector_buffer
@ -332,75 +265,26 @@ cache_write_pio:
push ecx esi
; cli
cli
mov esi,edi
shl esi,9
add esi,HD_CACHE+65536 ; esi = from memory position
; add esi,HD_CACHE+65536 ; esi = from memory position
push eax
call calculate_cache_2
add esi,eax
pop eax
mov ecx,256
mov edx,[hdbase]
cld
rep outsw
; sti
sti
call enable_ide_int
; call enable_ide_int
pop esi ecx
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:
mov ecx,cache_max*10/100
mov edi,[cache_search_start]
search_for_empty:
inc edi
cmp edi,cache_max
jbe inside_cache
mov edi,1
inside_cache:
cmp dword [edi*8+HD_CACHE+4],2 ; get cache slot info
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:
mov [cache_search_start],edi
found_slot_access_denied:
ret
align 4
clear_hd_cache:
push eax ecx edi
mov edi, HD_CACHE
mov ecx,16384
xor eax,eax
cld
rep stosd ; clear hd cache with 0
mov [cache_search_start],eax
mov [fat_in_cache],-1
mov [fat_change],0
pop edi ecx eax
ret
save_hd_wait_timeout:
push eax
@ -684,7 +568,12 @@ hd_read_dma:
push ecx esi edi
mov esi, eax
shl edi, 9
add edi, HD_CACHE+0x10000
; add edi, HD_CACHE+0x10000
push eax
call calculate_cache_2
add edi,eax
pop eax
mov ecx, 512/4
cld
rep movsd
@ -774,26 +663,27 @@ hd_read_dma:
jmp hd_read_dma
align 4
write_cache_chain:
push esi
mov eax, IDE_descriptor_table
mov edx, [cache_chain_pos]
shl edx, 9
add edx, DMA_HD_MEM+0x10000
mov [eax], edx
movzx edx, [cache_chain_size]
shl edx, 9
mov [eax+4], dx
jmp do_write_dma
write_cache_sector:
mov [cache_chain_size],1
mov [cache_chain_pos],edi
write_cache_chain:
push esi
mov eax, IDE_descriptor_table
mov edx, edi
shl edx, 9
add edx, DMA_HD_MEM+0x10000
mov [eax], edx
mov word [eax+4], 0x200
do_write_dma:
mov edx,eax
pusha
mov esi,[cache_chain_pos]
shl esi, 9
call calculate_cache_2
add esi,eax
mov edi,OS_BASE+0x284000 ;HD_CACHE
mov dword [edx], 0x284000 ;DMA_HD_MEM
movzx ecx, [cache_chain_size]
shl ecx, 9
mov word [edx+4], cx
shr ecx,2
cld
rep movsd
popa
sub eax, OS_BASE
mov dx, [IDEContrRegsBaseAddr]
cmp [hdbase], 0x1F0

457
kernel/trunk/blkdev/ide_cache.inc Normal file
View File

@ -0,0 +1,457 @@
;**************************************************************************
;
; [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
;
;**************************************************************************
align 4
write_cache:
;-----------------------------------------------------------
; write all changed sectors to disk
;-----------------------------------------------------------
push eax ecx edx esi edi
; write difference ( 2 ) from cache to hd
; mov ecx,cache_max
; mov esi,HD_CACHE+8
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
; DMA write is permitted only if [allow_dma_access]=1
cmp [allow_dma_access], 2
jae .nodma
cmp [dma_hdd], 1
jnz .nodma
; Ž¡ê¥¤¨­ï¥¬ § ¯¨áì 楯®çª¨ ¯®á«¥¤®¢ â¥«ì­ëå ᥪâ®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], 64
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:
; mov ecx,cache_max*10/100
; mov edi,[cache_search_start]
call calculate_cache_3
; push eax edx
; mov eax,ecx
; mov ecx,10
; xor edx,edx
; div ecx
; mov ecx,eax
; pop edx eax
shr ecx,3
search_for_empty:
inc edi
; cmp edi,cache_max
; push eax
call calculate_cache_4
; cmp edi,eax
; pop eax
jbe inside_cache
mov edi,1
inside_cache:
; cmp dword [edi*8+HD_CACHE+4],2 ; get cache slot info
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:
; mov [cache_search_start],edi
call calculate_cache_5
found_slot_access_denied:
ret
align 4
clear_hd_cache:
; push eax ecx edi
; mov edi, HD_CACHE
; mov ecx,16384
; xor eax,eax
; cld
; rep stosd ; clear hd cache with 0
; mov [cache_search_start],eax
mov [fat_in_cache],-1
mov [fat_change],0
; pop edi ecx eax
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 [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
;--------------------------------------------------------------------
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 [hdd_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
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 [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
;--------------------------------------------------------------------
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 [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
;--------------------------------------------------------------------
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 [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
;--------------------------------------------------------------------
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 [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
;--------------------------------------------------------------------
align 4
calculate_linear_to_real:
shr eax, 12
mov eax, [page_tabs+eax*4]
and eax, 0xFFFFF000
ret

4
kernel/trunk/const.inc
View File

@ -292,8 +292,8 @@ RESERVED_PORTS equ (OS_BASE+0x02D0000)
IRQ_SAVE equ (OS_BASE+0x02E0000)
BOOT_VAR equ (OS_BASE+0x02f0000)
DMA_HD_MEM equ 0x0300000
HD_CACHE equ (OS_BASE+DMA_HD_MEM)
; DMA_HD_MEM equ 0x0300000
; HD_CACHE equ (OS_BASE+DMA_HD_MEM)
stack_data_start equ (OS_BASE+0x0400000)
eth_data_start equ (OS_BASE+0x0400000)

51
kernel/trunk/data32.inc
View File

@ -337,6 +337,57 @@ img_background rd 1
mem_BACKGROUND rd 1
wraw_bacground_select rb 1
cache_ide0_pointer rd 1
cache_ide0_size rd 1 ; not use
cache_ide0_data_pointer rd 1
cache_ide0_system_data_size rd 1 ; not use
cache_ide0_appl_data_size rd 1 ; not use
cache_ide0_system_data rd 1
cache_ide0_appl_data rd 1
cache_ide0_system_sad_size rd 1
cache_ide0_appl_sad_size rd 1
cache_ide0_search_start rd 1
cache_ide0_appl_search_start rd 1
cache_ide1_pointer rd 1
cache_ide1_size rd 1 ; not use
cache_ide1_data_pointer rd 1
cache_ide1_system_data_size rd 1 ; not use
cache_ide1_appl_data_size rd 1 ; not use
cache_ide1_system_data rd 1
cache_ide1_appl_data rd 1
cache_ide1_system_sad_size rd 1
cache_ide1_appl_sad_size rd 1
cache_ide1_search_start rd 1
cache_ide1_appl_search_start rd 1
cache_ide2_pointer rd 1
cache_ide2_size rd 1 ; not use
cache_ide2_data_pointer rd 1
cache_ide2_system_data_size rd 1 ; not use
cache_ide2_appl_data_size rd 1 ; not use
cache_ide2_system_data rd 1
cache_ide2_appl_data rd 1
cache_ide2_system_sad_size rd 1
cache_ide2_appl_sad_size rd 1
cache_ide2_search_start rd 1
cache_ide2_appl_search_start rd 1
cache_ide3_pointer rd 1
cache_ide3_size rd 1 ; not use
cache_ide3_data_pointer rd 1
cache_ide3_system_data_size rd 1 ; not use
cache_ide3_appl_data_size rd 1 ; not use
cache_ide3_system_data rd 1
cache_ide3_appl_data rd 1
cache_ide3_system_sad_size rd 1
cache_ide3_appl_sad_size rd 1
cache_ide3_search_start rd 1
cache_ide3_appl_search_start rd 1
debug_step_pointer rd 1
hdd_appl_data rb 1 ; 0 = system cache, 1 - application cache
lba_read_enabled rd 1 ; 0 = disabled , 1 = enabled
pci_access_enabled rd 1 ; 0 = disabled , 1 = enabled
timer_ticks_enable rb 1 ; for cd driver

1
kernel/trunk/detect/disks.inc
View File

@ -1,5 +1,6 @@
$Revision$
include 'dev_fd.inc'
include 'dev_hdcd.inc'
include 'getcache.inc'
include 'sear_par.inc'

389
kernel/trunk/detect/getcache.inc Normal file
View File

@ -0,0 +1,389 @@
;cache_ide0_pointer dd 0
;cache_ide0_size dd 0 ; not use
;cache_ide0_data_pointer dd 0
;cache_ide0_system_data_size dd 0 ; not use
;cache_ide0_appl_data_size dd 0 ; not use
;cache_ide0_system_data dd 0
;cache_ide0_appl_data dd 0
;cache_ide0_system_sad_size dd 0
;cache_ide0_appl_sad_size dd 0
pusha
mov eax,[pg_data.pages_free]
; 1/32
shr eax,5
; round off up to 8 pages
shr eax,3
shl eax,3
; translate pages in butes *4096
shl eax,12
; check a upper size of the cache, no more than 1 Mb on the physical device
cmp eax,1024*1024
jbe @f
mov eax,1024*1024
jmp .continue
@@:
; check a lower size of the cache, not less than 128 Kb on the physical device
cmp eax,128*1024
jae @f
mov eax,128*1024
@@:
.continue:
mov [cache_ide0_size],eax
mov [cache_ide1_size],eax
mov [cache_ide2_size],eax
mov [cache_ide3_size],eax
xor eax,eax
mov [cache_ide0_search_start],eax
mov [cache_ide0_appl_search_start],eax
mov [cache_ide1_search_start],eax
mov [cache_ide1_appl_search_start],eax
mov [cache_ide2_search_start],eax
mov [cache_ide2_appl_search_start],eax
mov [cache_ide3_search_start],eax
mov [cache_ide3_appl_search_start],eax
mov [hdd_appl_data],1 ;al
mov cl,[DRIVE_DATA+1]
mov ch,cl
and cl,11b
cmp cl,0
je .ide2
call get_cache_ide3
.ide2:
mov cl,ch
and cl,1100b
cmp cl,0
je .ide1
call get_cache_ide2
.ide1:
mov cl,ch
and cl,110000b
cmp cl,0
je .ide0
call get_cache_ide1
.ide0:
mov cl,ch
and cl,11000000b
cmp cl,0
je end_get_cache
call get_cache_ide0
jmp end_get_cache
get_cache_ide0:
push ecx
stdcall kernel_alloc,[cache_ide0_size]
mov [cache_ide0_pointer],eax
pop ecx
mov edx,eax
mov eax,[cache_ide0_size]
shr eax,3
mov [cache_ide0_system_data_size],eax
mov ebx,eax
imul eax,7
mov [cache_ide0_appl_data_size],eax
add ebx,edx
mov [cache_ide0_data_pointer],ebx
cmp cl,10000000b
je .cd
push ecx
mov eax,[cache_ide0_system_data_size]
call calculate_for_hd
add eax,[cache_ide0_pointer]
mov [cache_ide0_system_data],eax
mov [cache_ide0_system_sad_size],ecx
push edi
mov edi,[cache_ide0_pointer]
call clear_ide_cache
pop edi
mov eax,[cache_ide0_appl_data_size]
call calculate_for_hd
add eax,[cache_ide0_data_pointer]
mov [cache_ide0_appl_data],eax
mov [cache_ide0_appl_sad_size],ecx
push edi
mov edi,[cache_ide0_data_pointer]
call clear_ide_cache
pop edi
pop ecx
ret
.cd:
push ecx
mov eax,[cache_ide0_system_data_size]
call calculate_for_cd
add eax,[cache_ide0_pointer]
mov [cache_ide0_system_data],eax
mov [cache_ide0_system_sad_size],ecx
push edi
mov edi,[cache_ide0_pointer]
call clear_ide_cache
pop edi
mov eax,[cache_ide0_appl_data_size]
call calculate_for_cd
add eax,[cache_ide0_data_pointer]
mov [cache_ide0_appl_data],eax
mov [cache_ide0_appl_sad_size],ecx
push edi
mov edi,[cache_ide0_data_pointer]
call clear_ide_cache
pop edi
pop ecx
ret
get_cache_ide1:
push ecx
stdcall kernel_alloc,[cache_ide1_size]
mov [cache_ide1_pointer],eax
pop ecx
mov edx,eax
mov eax,[cache_ide1_size]
shr eax,3
mov [cache_ide1_system_data_size],eax
mov ebx,eax
imul eax,7
mov [cache_ide1_appl_data_size],eax
add ebx,edx
mov [cache_ide1_data_pointer],ebx
cmp cl,100000b
je .cd
push ecx
mov eax,[cache_ide1_system_data_size]
call calculate_for_hd
add eax,[cache_ide1_pointer]
mov [cache_ide1_system_data],eax
mov [cache_ide1_system_sad_size],ecx
push edi
mov edi,[cache_ide1_pointer]
call clear_ide_cache
pop edi
mov eax,[cache_ide1_appl_data_size]
call calculate_for_hd
add eax,[cache_ide1_data_pointer]
mov [cache_ide1_appl_data],eax
mov [cache_ide1_appl_sad_size],ecx
push edi
mov edi,[cache_ide1_data_pointer]
call clear_ide_cache
pop edi
pop ecx
ret
.cd:
push ecx
mov eax,[cache_ide1_system_data_size]
call calculate_for_cd
add eax,[cache_ide1_pointer]
mov [cache_ide1_system_data],eax
mov [cache_ide1_system_sad_size],ecx
push edi
mov edi,[cache_ide1_pointer]
call clear_ide_cache
pop edi
mov eax,[cache_ide1_appl_data_size]
call calculate_for_cd
add eax,[cache_ide1_data_pointer]
mov [cache_ide1_appl_data],eax
mov [cache_ide1_appl_sad_size],ecx
push edi
mov edi,[cache_ide1_data_pointer]
call clear_ide_cache
pop edi
pop ecx
ret
get_cache_ide2:
push ecx
stdcall kernel_alloc,[cache_ide2_size]
mov [cache_ide2_pointer],eax
pop ecx
mov edx,eax
mov eax,[cache_ide2_size]
shr eax,3
mov [cache_ide2_system_data_size],eax
mov ebx,eax
imul eax,7
mov [cache_ide2_appl_data_size],eax
add ebx,edx
mov [cache_ide2_data_pointer],ebx
cmp cl,1000b
je .cd
push ecx
mov eax,[cache_ide2_system_data_size]
call calculate_for_hd
add eax,[cache_ide2_pointer]
mov [cache_ide2_system_data],eax
mov [cache_ide2_system_sad_size],ecx
push edi
mov edi,[cache_ide2_pointer]
call clear_ide_cache
pop edi
mov eax,[cache_ide2_appl_data_size]
call calculate_for_hd
add eax,[cache_ide2_data_pointer]
mov [cache_ide2_appl_data],eax
mov [cache_ide2_appl_sad_size],ecx
push edi
mov edi,[cache_ide2_data_pointer]
call clear_ide_cache
pop edi
pop ecx
ret
.cd:
push ecx
mov eax,[cache_ide2_system_data_size]
call calculate_for_cd
add eax,[cache_ide2_pointer]
mov [cache_ide2_system_data],eax
mov [cache_ide2_system_sad_size],ecx
push edi
mov edi,[cache_ide2_pointer]
call clear_ide_cache
pop edi
mov eax,[cache_ide2_appl_data_size]
call calculate_for_cd
add eax,[cache_ide2_data_pointer]
mov [cache_ide2_appl_data],eax
mov [cache_ide2_appl_sad_size],ecx
push edi
mov edi,[cache_ide2_data_pointer]
call clear_ide_cache
pop edi
pop ecx
ret
get_cache_ide3:
push ecx
stdcall kernel_alloc,[cache_ide3_size]
mov [cache_ide3_pointer],eax
pop ecx
mov edx,eax
mov eax,[cache_ide3_size]
shr eax,3
mov [cache_ide3_system_data_size],eax
mov ebx,eax
imul eax,7
mov [cache_ide3_appl_data_size],eax
add ebx,edx
mov [cache_ide3_data_pointer],ebx
cmp cl,10b
je .cd
push ecx
mov eax,[cache_ide3_system_data_size]
call calculate_for_hd
add eax,[cache_ide3_pointer]
mov [cache_ide3_system_data],eax
mov [cache_ide3_system_sad_size],ecx
push edi
mov edi,[cache_ide3_pointer]
call clear_ide_cache
pop edi
mov eax,[cache_ide3_appl_data_size]
call calculate_for_hd
add eax,[cache_ide3_data_pointer]
mov [cache_ide3_appl_data],eax
mov [cache_ide3_appl_sad_size],ecx
push edi
mov edi,[cache_ide3_data_pointer]
call clear_ide_cache
pop edi
pop ecx
ret
.cd:
push ecx
mov eax,[cache_ide3_system_data_size]
call calculate_for_cd
add eax,[cache_ide3_pointer]
mov [cache_ide3_system_data],eax
mov [cache_ide3_system_sad_size],ecx
push edi
mov edi,[cache_ide3_pointer]
call clear_ide_cache
pop edi
mov eax,[cache_ide3_appl_data_size]
call calculate_for_cd
add eax,[cache_ide3_data_pointer]
mov [cache_ide3_appl_data],eax
mov [cache_ide3_appl_sad_size],ecx
push edi
mov edi,[cache_ide3_data_pointer]
call clear_ide_cache
pop edi
pop ecx
ret
calculate_for_hd:
push eax
mov ebx,eax
shr eax,9
shl eax,3
sub ebx,eax
shr ebx,9
mov ecx,ebx
shl ebx,9
pop eax
sub eax,ebx
ret
calculate_for_cd:
push eax
mov ebx,eax
shr eax,11
shl eax,3
sub ebx,eax
shr ebx,11
mov ecx,ebx
shl ebx,11
pop eax
sub eax,ebx
ret
clear_ide_cache:
push eax
shl ecx,1
xor eax,eax
cld
rep stosd
pop eax
ret
end_get_cache:
; mov [cache_ide0_pointer],HD_CACHE
; mov [cache_ide0_system_data],HD_CACHE+65536
; mov [cache_ide0_system_sad_size],1919
popa

3
kernel/trunk/kernel32.inc
View File

@ -229,6 +229,9 @@ include "bus/pci/pci32.inc"
include "blkdev/fdc.inc"
include "blkdev/flp_drv.inc"
; IDE cache
include "blkdev/ide_cache.inc"
; HD drive controller
include "blkdev/hd_drv.inc"

3
kernel/trunk/memmap.inc
View File

@ -176,7 +176,8 @@
; 0x80280000 -> 281FFF ramdisk fat
; 0x80282000 -> 283FFF floppy fat
;
; 0x80284000 -> 297FFF free (80 Kb)
; 0x80284000 -> 28BFFF HDD DMA AREA
; 0x8028C000 -> 297FFF free (48 Kb)
;
; 0x80298000 -> 29ffff auxiliary table for background smoothing code
;