| /kernel/branches/Kolibri-acpi/blkdev/hd_drv.inc |
|---|
| 945,3 → 945,83 |
| @@: |
| ret |
| ; \end{diamond} |
| reserve_hd1: |
| cli |
| cmp [hd1_status], 0 |
| je reserve_ok1 |
| sti |
| call change_task |
| jmp reserve_hd1 |
| reserve_ok1: |
| push eax |
| mov eax, [CURRENT_TASK] |
| shl eax, 5 |
| mov eax, [eax+CURRENT_TASK+TASKDATA.pid] |
| mov [hd1_status], eax |
| pop eax |
| sti |
| ret |
| ;******************************************** |
| uglobal |
| hd_in_cache db ? |
| endg |
| reserve_hd_channel: |
| ; BIOS disk accesses are protected with common mutex hd1_status |
| ; This must be modified when hd1_status will not be valid! |
| cmp [hdpos], 0x80 |
| jae .ret |
| cmp [hdbase], 0x1F0 |
| jne .IDE_Channel_2 |
| .IDE_Channel_1: |
| cli |
| cmp [IDE_Channel_1], 0 |
| je .reserve_ok_1 |
| sti |
| call change_task |
| jmp .IDE_Channel_1 |
| .IDE_Channel_2: |
| cli |
| cmp [IDE_Channel_2], 0 |
| je .reserve_ok_2 |
| sti |
| call change_task |
| jmp .IDE_Channel_2 |
| .reserve_ok_1: |
| mov [IDE_Channel_1], 1 |
| push eax |
| mov al, 1 |
| jmp @f |
| .reserve_ok_2: |
| mov [IDE_Channel_2], 1 |
| push eax |
| mov al, 3 |
| @@: |
| cmp [hdid], 1 |
| sbb al, -1 |
| mov [hd_in_cache], al |
| pop eax |
| sti |
| .ret: |
| ret |
| free_hd_channel: |
| ; see comment at reserve_hd_channel |
| cmp [hdpos], 0x80 |
| jae .ret |
| cmp [hdbase], 0x1F0 |
| jne .IDE_Channel_2 |
| .IDE_Channel_1: |
| mov [IDE_Channel_1], 0 |
| .ret: |
| ret |
| .IDE_Channel_2: |
| mov [IDE_Channel_2], 0 |
| ret |
| ;******************************************** |