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Rev 4273 Rev 4291
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;; Copyright (C) KolibriOS team 2004-2013. All rights reserved. ;;
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;; Copyright (C) KolibriOS team 2004-2013. 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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Line 8... Line 8...
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$Revision: 4273 $
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$Revision: 4291 $
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 9 
 
10 
 
 10 
 
Line 110... Line 110...
110 
; DMA read is permitted if [allow_dma_access]=1 or 2
 110 
; DMA read is permitted if [allow_dma_access]=1 or 2
111 
        cmp     [allow_dma_access], 2
 111 
        cmp     [allow_dma_access], 2
112 
        ja      .nodma
 112 
        ja      .nodma
113 
        cmp     [dma_hdd], 1
 113 
        cmp     [dma_hdd], 1
114 
        jnz     .nodma
 114 
        jnz     .nodma
- 
 
 115 
;--------------------------------------
- 
 
 116 
        push    eax
- 
 
 117 
        mov     eax, [hd_address_table]
- 
 
 118 
        cmp     [hdbase], eax ; 0x1F0
- 
 
 119 
        pop     eax
- 
 
 120 
        jnz     @f
- 
 
 121 
 
- 
 
 122 
        test    [DRIVE_DATA+1], byte 10100000b
- 
 
 123 
        jnz     .nodma
- 
 
 124 
 
- 
 
 125 
        jmp     .dma
- 
 
 126 
@@:
- 
 
 127 
        test    [DRIVE_DATA+1], byte 1010b
- 
 
 128 
        jnz     .nodma
- 
 
 129 
.dma:
- 
 
 130 
;--------------------------------------
115 
        call    hd_read_dma
 131 
        call    hd_read_dma
116 
        jmp     @f
 132 
        jmp     @f
117 
.nodma:
 133 
.nodma:
118 
        call    hd_read_pio
 134 
        call    hd_read_pio
119 
@@:
 135 
@@:
Line 202... Line 218...
202 
; DMA write is permitted only if [allow_dma_access]=1
 218 
; DMA write is permitted only if [allow_dma_access]=1
203 
        cmp     [allow_dma_access], 2
 219 
        cmp     [allow_dma_access], 2
204 
        jae     .nodma
 220 
        jae     .nodma
205 
        cmp     [dma_hdd], 1
 221 
        cmp     [dma_hdd], 1
206 
        jnz     .nodma
 222 
        jnz     .nodma
- 
 
 223 
;--------------------------------------
- 
 
 224 
        push    eax
- 
 
 225 
        mov     eax, [hd_address_table]
- 
 
 226 
        cmp     [hdbase], eax ; 0x1F0
- 
 
 227 
        pop     eax
- 
 
 228 
        jnz     @f
- 
 
 229 
 
- 
 
 230 
        test    [DRIVE_DATA+1], byte 10100000b
- 
 
 231 
        jnz     .nodma
- 
 
 232 
 
- 
 
 233 
        jmp     .dma
- 
 
 234 
@@:
- 
 
 235 
        test    [DRIVE_DATA+1], byte 1010b
- 
 
 236 
        jnz     .nodma
- 
 
 237 
.dma:
- 
 
 238 
;--------------------------------------
207 
        call    cache_write_dma
 239 
        call    cache_write_dma
208 
        jmp     .common
 240 
        jmp     .common
209 
.nodma:
 241 
.nodma:
210 
        mov     [cache_chain_size], 1
 242 
        mov     [cache_chain_size], 1
211 
        call    cache_write_pio
 243 
        call    cache_write_pio
Line 801... Line 833...
801 
        jne     .exit
 833 
        jne     .exit
Line 802... Line 834...
802 
 
 834 
 
803 
        pushfd
 835 
        pushfd
804 
        cli
 836 
        cli
805 
        pushad
 - 
 
806 
; clear Bus Master IDE Command register
 837 
        pushad
807 
        mov     [IDE_common_irq_param], 0
 838 
        mov     [IDE_common_irq_param], 0
- 
 
 839 
        mov     dx, [IDEContrRegsBaseAddr]
- 
 
 840 
; test whether it is our interrupt?
808 
        mov     dx, [IDEContrRegsBaseAddr]
 841 
        add     edx, 2
- 
 
 842 
        in      al, dx
809 
        mov     al, 0
 843 
        test    al, 100b
810 
        out     dx, al
 844 
        jz      @f
811 
; clear Bus Master IDE Status register
 845 
; clear Bus Master IDE Status register
812 
; clear Interrupt bit
 - 
 
813 
        add     edx, 2
 - 
 
814 
        mov     al, 4 ; 100b
 846 
; clear Interrupt bit
- 
 
 847 
        out     dx, al
- 
 
 848 
; clear Bus Master IDE Command register
- 
 
 849 
        sub     edx, 2
- 
 
 850 
        xor     eax, eax
- 
 
 851 
        out     dx, al
- 
 
 852 
; read status register and remove the interrupt request
- 
 
 853 
        mov     edx, [hdbase]
- 
 
 854 
        add     edx, 0x7
- 
 
 855 
        in      al, dx
- 
 
 856 
        popad
- 
 
 857 
        popfd
- 
 
 858 
        mov     al, 1
- 
 
 859 
        ret
- 
 
 860 
;--------------------------------------
815 
        out     dx, al
 861 
align 4
816 
 
 862 
@@:
817 
        popad
 863 
        popad
818 
        popfd
 864 
        popfd
819 
;--------------------------------------
 865 
;--------------------------------------
820 
align 4
 866 
align 4
821 
.exit:
 867 
.exit:
822 
        mov     al, 1
 868 
        mov     al, 0
823 
        ret
 869 
        ret
824 
;-----------------------------------------------------------------------------
 870 
;-----------------------------------------------------------------------------
825 
align 4
 871 
align 4
826 
IDE_irq_15_handler:
 872 
IDE_irq_15_handler:
827 
        cmp     [IDE_common_irq_param], irq15_num
 873 
        cmp     [IDE_common_irq_param], irq15_num
Line 828... Line 874...
828 
        jne     .exit
 874 
        jne     .exit
829 
 
 875 
 
830 
        pushfd
 876 
        pushfd
831 
        cli
 - 
 
832 
        pushad
 877 
        cli
833 
; clear Bus Master IDE Command register
 878 
        pushad
834 
        mov     [IDE_common_irq_param], 0
 879 
        mov     [IDE_common_irq_param], 0
- 
 
 880 
        mov     dx, [IDEContrRegsBaseAddr]
- 
 
 881 
        add     dx, 8
835 
        mov     dx, [IDEContrRegsBaseAddr]
 882 
; test whether it is our interrupt?
- 
 
 883 
        add     edx, 2
836 
        add     dx, 8
 884 
        in      al, dx
837 
        mov     al, 0
 885 
        test    al, 100b
838 
        out     dx, al
 886 
        jz      @f
839 
; clear Bus Master IDE Status register
 - 
 
840 
; clear Interrupt bit
 - 
 
841 
        add     edx, 2
 887 
; clear Bus Master IDE Status register
- 
 
 888 
; clear Interrupt bit
- 
 
 889 
        out     dx, al
- 
 
 890 
; clear Bus Master IDE Command register
- 
 
 891 
        sub     edx, 2
- 
 
 892 
        mov     al, 0
- 
 
 893 
        out     dx, al
- 
 
 894 
; read status register and remove the interrupt request
- 
 
 895 
        mov     edx, [hdbase]
- 
 
 896 
        add     edx, 0x7
- 
 
 897 
        in      al, dx
- 
 
 898 
        popad
- 
 
 899 
        popfd
- 
 
 900 
        mov     al, 1
- 
 
 901 
        ret
842 
        mov     al, 4 ; 100b
 902 
;--------------------------------------
843 
        out     dx, al
 903 
align 4
844 
 
 904 
@@:
845 
        popad
 905 
        popad
846 
        popfd
 906 
        popfd
847 
;--------------------------------------
 907 
;--------------------------------------
848 
align 4
 908 
align 4
849 
.exit:
 909 
.exit:
850 
        mov     al, 1
 910 
        mov     al, 0
851 
        ret
 911 
        ret
852 
;-----------------------------------------------------------------------------
 912 
;-----------------------------------------------------------------------------
853 
align 4
 913 
align 4
854 
IDE_common_irq_handler:
 914 
IDE_common_irq_handler:
Line 855... Line 915...
855 
        cmp     [IDE_common_irq_param], 0
 915 
        cmp     [IDE_common_irq_param], 0
856 
        je      .exit
 916 
        je      .exit
857 
 
 917 
 
858 
        pushfd
 - 
 
859 
        cli
 918 
        pushfd
860 
        pushad
 919 
        cli
861 
; clear Bus Master IDE Command register
 920 
        pushad
862 
        xor     ebx, ebx
 921 
        xor     ebx, ebx
863 
        mov     dx, [IDEContrRegsBaseAddr]
 922 
        mov     dx, [IDEContrRegsBaseAddr]
864 
        mov     eax, IDE_common_irq_param
 - 
 
865 
        cmp     [eax], irq14_num
 923 
        mov     eax, IDE_common_irq_param
Line 866... Line 924...
866 
        mov     [eax], bl
 924 
        cmp     [eax], irq14_num
867 
        xor     eax, eax
 925 
        mov     [eax], bl
868 
        je      @f
 926 
        je      @f
869 
 
 927 
 
- 
 
 928 
        add     dx, 8
870 
        add     dx, 8
 929 
;--------------------------------------
- 
 
 930 
align 4
- 
 
 931 
@@:
- 
 
 932 
; test whether it is our interrupt?
871 
;--------------------------------------
 933 
        add     edx, 2
872 
align 4
 934 
        in      al, dx
873 
@@:
 - 
 
874 
        out     dx, al
 - 
 
875 
; clear Bus Master IDE Status register
 935 
        test    al, 100b
- 
 
 936 
        jz      @f
- 
 
 937 
; clear Bus Master IDE Status register
- 
 
 938 
; clear Interrupt bit
- 
 
 939 
        out     dx, al
- 
 
 940 
; clear Bus Master IDE Command register
- 
 
 941 
        sub     edx, 2
- 
 
 942 
        xor     eax, eax
- 
 
 943 
        out     dx, al
- 
 
 944 
; read status register and remove the interrupt request
- 
 
 945 
        mov     edx, [hdbase]
- 
 
 946 
        add     edx, 0x7
- 
 
 947 
        in      al, dx
- 
 
 948 
        popad
- 
 
 949 
        popfd
876 
; clear Interrupt bit
 950 
        mov     al, 1
877 
        add     edx, 2
 951 
        ret
878 
        mov     al, 4 ; 100b
 952 
;--------------------------------------
879 
        out     dx, al
 953 
align 4
880 
 
 954 
@@:
881 
        popad
 955 
        popad
882 
        popfd
 956 
        popfd
883 
;--------------------------------------
 957 
;--------------------------------------
884 
align 4
 958 
align 4
885 
.exit:
 959 
.exit:
886 
        mov     al, 1
 960 
        mov     al, 0
887 
        ret
 961 
        ret