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Rev 6014 Rev 6016
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;; Copyright (C) KolibriOS team 2004-2015. All rights reserved. ;;
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;; Copyright (C) KolibriOS team 2004-2015. All rights reserved. ;;
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;; Distributed under terms of the GNU General Public License    ;;
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;; Distributed under terms of the GNU General Public License    ;;
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;;                                                              ;;
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;;                                                              ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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$Revision: 6014 $
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$Revision: 6016 $
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; Disk access through BIOS
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; Disk access through BIOS
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iglobal
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iglobal
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        dec     edx
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        dec     edx
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        cmp     eax, edx
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        cmp     eax, edx
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        ja      .notread
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        ja      .notread
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        sub     eax, [bios_cur_sector]
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        sub     eax, [bios_cur_sector]
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        shl     eax, 9
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        shl     eax, 9
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        add     eax, (OS_BASE+0x9A000)
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        add     eax, (OS_BASE+0x99000)
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        push    ecx esi
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        push    ecx esi
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        mov     esi, eax
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        mov     esi, eax
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        mov     ecx, 512/4
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        mov     ecx, 512/4
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        cld
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        cld
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        rep movsd
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        rep movsd
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        mov     [hd_error], 1
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        mov     [hd_error], 1
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        jmp     hd_read_error
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        jmp     hd_read_error
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;-----------------------------------------------------------------
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;-----------------------------------------------------------------
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bd_write_cache_chain:
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bd_write_cache_chain:
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        pusha
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        pusha
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        mov     edi, OS_BASE + 0x9A000
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        mov     edi, OS_BASE + 0x99000
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        movzx   ecx, [cache_chain_size]
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        movzx   ecx, [cache_chain_size]
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        push    ecx
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        push    ecx
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        shl     ecx, 9-2
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        shl     ecx, 9-2
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        rep movsd
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        rep movsd
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        pop     ecx
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        pop     ecx
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; Because this code uses fixed addresses,
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; Because this code uses fixed addresses,
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; it can not be run simultaniously by many threads.
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; it can not be run simultaniously by many threads.
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; In current implementation it is protected by common mutex 'ide_status'
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; In current implementation it is protected by common mutex 'ide_status'
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        mov     word [OS_BASE + 510h], 10h          ; packet length
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        mov     word [OS_BASE + 510h], 10h          ; packet length
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        mov     word [OS_BASE + 512h], cx           ; number of sectors
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        mov     word [OS_BASE + 512h], cx           ; number of sectors
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        mov     dword [OS_BASE + 514h], 9A000000h   ; buffer 9A00:0000
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        mov     dword [OS_BASE + 514h], 99000000h   ; buffer 9900:0000
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        mov     dword [OS_BASE + 518h], eax
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        mov     dword [OS_BASE + 518h], eax
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        and     dword [OS_BASE + 51Ch], 0
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        and     dword [OS_BASE + 51Ch], 0
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        push    ebx ecx esi edi
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        push    ebx ecx esi edi
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        mov     ebx, int13_regs_in
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        mov     ebx, int13_regs_in
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        mov     edi, ebx
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        mov     edi, ebx
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        stdcall enable_irq, edx
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        stdcall enable_irq, edx
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        popad
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        popad
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@@:
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@@:
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        mov     word [ebx+v86_regs.esi], 510h
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        mov     word [ebx+v86_regs.esi], 510h
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        mov     word [ebx+v86_regs.ss], 9000h
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        mov     word [ebx+v86_regs.ss], 9000h
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        mov     word [ebx+v86_regs.esp], 0A000h
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        mov     word [ebx+v86_regs.esp], 09000h
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        mov     word [ebx+v86_regs.eip], 500h
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        mov     word [ebx+v86_regs.eip], 500h
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        mov     [ebx+v86_regs.eflags], 20200h
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        mov     [ebx+v86_regs.eflags], 20200h
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        mov     esi, [sys_v86_machine]
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        mov     esi, [sys_v86_machine]
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        mov     ecx, 0x502
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        mov     ecx, 0x502
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        push    fs
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        push    fs