| 373,9 → 373,7 |
|---|
| mov [pg_count], edi |
| shr edi, 10 |
| |
| bt [cpu_caps], CAPS_PSE |
| jnc .map_page_tables |
| or esi, PG_LARGE+PG_UW |
| or esi, PG_GLOBAL+PG_LARGE+PG_UW |
| mov edx, sys_pgdir+(LFB_BASE shr 20) |
| @@: |
| mov [edx], esi |
| 384,39 → 382,29 |
|---|
| dec edi |
| jnz @B |
| |
| bt [cpu_caps], CAPS_PGE |
| jnc @F |
| or dword [sys_pgdir+(LFB_BASE shr 20)], PG_GLOBAL |
| @@: |
| mov dword [LFBAddress], LFB_BASE |
| mov eax, cr3 ;flush TLB |
| mov cr3, eax |
| ret |
| endp |
| |
| .map_page_tables: |
| |
| @@: |
| call alloc_page |
| stdcall map_page_table, edx, eax |
| add edx, 0x00400000 |
| dec edi |
| jnz @B |
| |
| mov eax, [LFBAddress] |
| mov edi, page_tabs + (LFB_BASE shr 10) |
| or eax, PG_UW |
| mov ecx, [pg_count] |
| cld |
| @@: |
| stosd |
| add eax, 0x1000 |
| dec ecx |
| jnz @B |
| |
| mov dword [LFBAddress], LFB_BASE |
| mov eax, cr3 ;flush TLB |
| mov cr3, eax |
| |
| align 4 |
| proc init_userDMA |
| stdcall alloc_pages, 4096 ; 16M <<<<<<<<<<+++++++++++++++++++++++++++++++++ |
| add eax, 0x007FFFF0 |
| and eax, 0xFF800000 ; align at 8M boundary |
| mov [UserDMAaddr], eax |
| or eax, PG_UW + PG_NOCACHE |
| mov ebx, USER_DMA_BUFFER |
| mov ecx, 2048 ; 8M, to be sure |
| call commit_pages |
| mov eax, [UserDMAaddr] |
| or eax, PG_LARGE + PG_UW + PG_NOCACHE |
| mov ebx, sys_pgdir + (USER_DMA_BUFFER shr 20) |
| mov [ebx], eax |
| add ebx, 4 |
| add eax, 0x00400000 |
| mov [ebx], eax |
| ret |
| endp |
| |