| 431,18 → 431,21 |
|---|
| pci_mmio_map: |
| and edx,0x0ffff |
| cmp ah,6 |
| jc @f |
| jc .bar_0_5 |
| jz .bar_rom |
| mov eax,-2 |
| ret |
| @@: |
| .bar_rom: |
| mov ah, 8 ; bar6 = Expansion ROM base address |
| .bar_0_5: |
| push ecx |
| add ebx, 4095 |
| and ebx,-4096 |
| push ebx |
| mov bl, ah ; bl = BAR# (0..5) |
| mov bl, ah ; bl = BAR# (0..5), however bl=8 for BAR6 |
| shl bl, 1 |
| shl bl, 1 |
| add bl, 0x10 ; bl = BARs offset in PCI config. space |
| add bl, 0x10 ; now bl = BAR offset in PCI config. space |
| mov ax,word [mmio_pci_addr] |
| mov bh, al ; bh = dddddfff |
| mov al, 2 ; al : DW to read |