Rev 5095 | Rev 5363 | Go to most recent revision | Show entire file | Regard whitespace | Details | Blame | Last modification | View Log | RSS feed
| Rev 5095 | Rev 5196 | ||
|---|---|---|---|
| Line 3... | Line 3... | ||
| 3 | ;; Copyright (C) KolibriOS team 2011-2014. All rights reserved. ;; |
3 | ;; Copyright (C) KolibriOS team 2011-2014. All rights reserved. ;; |
| 4 | ;; Distributed under terms of the GNU General Public License ;; |
4 | ;; Distributed under terms of the GNU General Public License ;; |
| 5 | ;; ;; |
5 | ;; ;; |
| 6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| Line 7... | Line 7... | ||
| 7 | 7 | ||
| Line 8... | Line 8... | ||
| 8 | $Revision: 5095 $ |
8 | $Revision: 5196 $ |
| 9 | 9 | ||
| 10 | ; Read/write functions try to do large operations, |
10 | ; Read/write functions try to do large operations, |
| 11 | ; it is significantly faster than several small operations. |
11 | ; it is significantly faster than several small operations. |
| Line 621... | Line 621... | ||
| 621 | ; 5. Decide whether we need to prefetch further sectors. |
621 | ; 5. Decide whether we need to prefetch further sectors. |
| 622 | ; If so, advance to 6. If not, go to 13. |
622 | ; If so, advance to 6. If not, go to 13. |
| 623 | ; Assume that devices < 3MB are floppies which are slow |
623 | ; Assume that devices < 3MB are floppies which are slow |
| 624 | ; (ramdisk does not have a cache, so we don't even get here for ramdisk). |
624 | ; (ramdisk does not have a cache, so we don't even get here for ramdisk). |
| 625 | ; This is a dirty hack, but the entire function is somewhat hacky. Use fs_read64*. |
625 | ; This is a dirty hack, but the entire function is somewhat hacky. Use fs_read64*. |
| 626 | mov eax, [ebp+PARTITION.Disk] |
626 | mov ecx, [ebp+PARTITION.Disk] |
| 627 | cmp dword [eax+DISK.MediaInfo.Capacity+4], 0 |
627 | cmp dword [ecx+DISK.MediaInfo.Capacity+4], 0 |
| 628 | jnz @f |
628 | jnz @f |
| 629 | cmp dword [eax+DISK.MediaInfo.Capacity], 3 shl (20-9) |
629 | cmp dword [ecx+DISK.MediaInfo.Capacity], 3 shl (20-9) |
| 630 | jb .floppy |
630 | jb .floppy |
| 631 | @@: |
631 | @@: |
| 632 | ; We want to prefetch CACHE_LEGACY_READ_SIZE sectors. |
632 | ; We want to prefetch CACHE_LEGACY_READ_SIZE sectors. |
| 633 | ; 6. Release the lock acquired at step 4a. |
633 | ; 6. Release the lock acquired at step 4a. |
| 634 | mov ecx, [ebp+PARTITION.Disk] |
634 | mov ecx, [ebp+PARTITION.Disk] |
| Line 753... | Line 753... | ||
| 753 | ; 15. Get the slot and pointer to the cache item, |
753 | ; 15. Get the slot and pointer to the cache item, |
| 754 | ; change the status to not-modified copy of the disk |
754 | ; change the status to not-modified copy of the disk |
| 755 | ; and go to 4c. |
755 | ; and go to 4c. |
| 756 | pop esi |
756 | pop esi |
| 757 | mov [esi+CACHE_ITEM.Status], CACHE_ITEM_COPY |
757 | mov [esi+CACHE_ITEM.Status], CACHE_ITEM_COPY |
| - | 758 | mov ecx, [ebx+DISKCACHE.sector_size_log] |
|
| 758 | jmp .found_in_cache |
759 | jmp .found_in_cache |
| Line 759... | Line 760... | ||
| 759 | 760 | ||
| 760 | ; On error at steps 13-14, release the lock |
761 | ; On error at steps 13-14, release the lock |
| 761 | ; and pass the error to the caller. |
762 | ; and pass the error to the caller. |