forked from KolibriOS/kolibrios
291 lines
6.3 KiB
NASM
291 lines
6.3 KiB
NASM
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;;
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;; Distributed under terms of the GNU General Public License ;;
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;; ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;driver sceletone
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format MS COFF
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API_VERSION equ 0 ;debug
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include '../proc32.inc'
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include '../imports.inc'
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OS_BASE equ 0x80000000
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SLOT_BASE equ OS_BASE+0x0080000
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struc UHCI
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{
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.bus dd ?
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.devfn dd ?
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.io_base dd ?
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.mm_base dd ?
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.irq dd ?
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.flags dd ?
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.reset dd ?
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.start dd ?
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.stop dd ?
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.sizeof:
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}
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virtual at 0
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UHCI UHCI
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end virtual
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struc IOCTL
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{ .handle dd ?
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.io_code dd ?
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.input dd ?
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.inp_size dd ?
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.output dd ?
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.out_size dd ?
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}
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virtual at 0
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IOCTL IOCTL
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end virtual
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public START
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public service_proc
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public version
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DEBUG equ 1
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DRV_ENTRY equ 1
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DRV_EXIT equ -1
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STRIDE equ 4 ;size of row in devices table
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SRV_GETVERSION equ 0
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section '.flat' code readable align 16
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proc START stdcall, state:dword
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cmp [state], 1
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jne .exit
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.entry:
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if DEBUG
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mov esi, msgInit
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call SysMsgBoardStr
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end if
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call init
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stdcall RegService, my_service, service_proc
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ret
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.fail:
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.exit:
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xor eax, eax
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ret
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endp
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handle equ IOCTL.handle
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io_code equ IOCTL.io_code
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input equ IOCTL.input
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inp_size equ IOCTL.inp_size
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output equ IOCTL.output
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out_size equ IOCTL.out_size
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align 4
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proc service_proc stdcall, ioctl:dword
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mov ebx, [ioctl]
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mov eax, [ebx+io_code]
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cmp eax, SRV_GETVERSION
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jne @F
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mov eax, [ebx+output]
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cmp [ebx+out_size], 4
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jne .fail
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mov [eax], dword API_VERSION
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xor eax, eax
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ret
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@@:
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.fail:
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or eax, -1
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ret
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endp
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restore handle
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restore io_code
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restore input
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restore inp_size
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restore output
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restore out_size
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align 4
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proc detect
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locals
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last_bus dd ?
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bus dd ?
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devfn dd ?
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endl
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xor eax, eax
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mov [bus], eax
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inc eax
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call PciApi
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cmp eax, -1
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je .err
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mov [last_bus], eax
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.next_bus:
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and [devfn], 0
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.next_dev:
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stdcall PciRead32, [bus], [devfn], dword 0
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test eax, eax
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jz .next
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cmp eax, -1
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je .next
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mov edi, devices
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@@:
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mov ebx, [edi]
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test ebx, ebx
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jz .next
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cmp eax, ebx
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je .found
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add edi, STRIDE
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jmp @B
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.next:
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inc [devfn]
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cmp [devfn], 256
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jb .next_dev
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mov eax, [bus]
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inc eax
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mov [bus], eax
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cmp eax, [last_bus]
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jna .next_bus
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xor eax, eax
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ret
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.found:
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mov eax, UHCI.sizeof
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call Kmalloc
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test eax, eax
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jz .mem_fail
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mov ebx, [bus]
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mov [eax+UHCI.bus], ebx
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mov ecx, [devfn]
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mov [eax+UHCI.devfn], ecx
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ret
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.mem_fail:
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if DEBUG
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mov esi, msgMemFail
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call SysMsgBoardStr
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end if
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.err:
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xor eax, eax
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ret
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endp
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PCI_BASE equ 0x20
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USB_LEGKEY equ 0xC0
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align 4
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proc init
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locals
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uhci dd ?
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endl
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call detect
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test eax, eax
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jz .fail
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mov [uhci], eax
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stdcall PciRead32, [eax+UHCI.bus], [eax+UHCI.devfn], PCI_BASE
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and eax, 0xFFC0
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mov esi, [uhci]
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mov [esi+UHCI.io_base], eax
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stdcall uhci_reset, esi
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.fail:
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if DEBUG
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mov esi, msgDevNotFound
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call SysMsgBoardStr
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end if
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ret
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endp
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UHCI_USBINTR equ 4 ; interrupt register
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UHCI_USBLEGSUP_RWC equ 0x8f00 ; the R/WC bits
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UHCI_USBLEGSUP_RO equ 0x5040 ; R/O and reserved bits
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UHCI_USBCMD_RUN equ 0x0001 ; RUN/STOP bit
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UHCI_USBCMD_HCRESET equ 0x0002 ; Host Controller reset
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UHCI_USBCMD_EGSM equ 0x0008 ; Global Suspend Mode
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UHCI_USBCMD_CONFIGURE equ 0x0040 ; Config Flag
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UHCI_USBINTR_RESUME equ 0x0002 ; Resume interrupt enable
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align 4
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proc uhci_reset stdcall, uhci:dword
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mov esi, [uhci]
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stdcall PciRead16, [esi+UHCI.bus], [esi+UHCI.devfn], USB_LEGKEY
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test eax, not (UHCI_USBLEGSUP_RO or UHCI_USBLEGSUP_RWC)
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jnz .reset
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mov edx, [esi+UHCI.io_base]
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in ax, dx
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test ax, UHCI_USBCMD_RUN
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jnz .reset
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test ax, UHCI_USBCMD_CONFIGURE
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jz .reset
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test ax, UHCI_USBCMD_EGSM
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jz .reset
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ret
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.reset:
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stdcall PciWrite16, [esi+UHCI.bus], [esi+UHCI.devfn], USB_LEGKEY, UHCI_USBLEGSUP_RWC
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mov edx, [esi+UHCI.io_base]
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mov ax, UHCI_USBCMD_HCRESET
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out dx, ax
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xor eax, eax
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out dx, ax
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add edx, UHCI_USBINTR
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out dx, ax
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ret
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endp
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DEVICE_ID equ 0x8086; pci device id
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VENDOR_ID equ 0x24D4; device vendor id
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;all initialized data place here
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align 4
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devices dd (DEVICE_ID shl 16)+VENDOR_ID
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dd 0 ;terminator
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version dd (5 shl 16) or (API_VERSION and 0xFFFF)
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my_service db 'UHCI',0 ;max 16 chars include zero
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msgInit db 'detect hardware...',13,10,0
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msgPCI db 'PCI accsess not supported',13,10,0
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msgDevNotFound db 'device not found',13,10,0
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msgMemFail db 'Kmalloc failed', 10,10,0
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;msgFail db 'device not found',13,10,0
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section '.data' data readable writable align 16
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;all uninitialized data place here
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