| 74,6 → 74,7 |
|---|
| cmp al,10 |
| jz pci_write_reg ;dword |
| |
| if defined mmio_pci_addr |
| cmp al,11 ; <<< user-level MMIO functions <<< NEW! |
| jz pci_mmio_init |
| cmp al,12 |
| 80,8 → 81,8 |
|---|
| jz pci_mmio_map |
| cmp al,13 |
| jz pci_mmio_unmap |
| end if |
| |
| |
| no_pci_access_for_applications: |
| |
| mov eax,-1 |
| 374,6 → 375,7 |
|---|
| dec eax |
| ret |
| |
| if defined mmio_pci_addr |
| ;*************************************************************************** |
| ; Function |
| ; pci_mmio_init ; NEW! |
| 386,9 → 388,8 |
|---|
| ; eax = -2 : device not registered for uMMIO service |
| ; eax = -3 : user heap initialization failure |
| ;*************************************************************************** |
| align 4 |
| pci_mmio_init: |
| cmp bx, word [mmio_pci_addr] ; must be set in kernel/data32.inc |
| cmp bx, mmio_pci_addr ; must be set in kernel/data32.inc |
| jz @f |
| mov eax,-2 |
| ret |
| 427,7 → 428,6 |
|---|
| ; eax = -5 : dynamic userspace allocation problem |
| ;*************************************************************************** |
| |
| align 4 |
| pci_mmio_map: |
| and edx,0x0ffff |
| cmp ah,6 |
| 446,7 → 446,7 |
|---|
| shl bl, 1 |
| shl bl, 1 |
| add bl, 0x10 ; now bl = BAR offset in PCI config. space |
| mov ax,word [mmio_pci_addr] |
| mov ax, mmio_pci_addr |
| mov bh, al ; bh = dddddfff |
| mov al, 2 ; al : DW to read |
| call pci_read_reg |
| 504,11 → 504,11 |
|---|
| ; eax = 0 if unmapping failed |
| ;*************************************************************************** |
| |
| align 4 |
| pci_mmio_unmap: |
| stdcall user_free, ebx |
| ret |
| |
| end if |
| |
| ;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= |
| |