;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;; ;; ;; Copyright (C) KolibriOS team 2004-2014. All rights reserved. ;; ;; Distributed under terms of the GNU General Public License ;; ;; ;; ;; FTDI chips driver for KolibriOS ;; ;; ;; ;; Written by gtament@gmail.com ;; ;; ;; ;; GNU GENERAL PUBLIC LICENSE ;; ;; Version 2, June 1991 ;; ;; ;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; format MS COFF DEBUG = 1 __DEBUG__ = 1 __DEBUG_LEVEL__ = 1 node equ ftdi_context node.next equ ftdi_context.next_context include '../../proc32.inc' include '../../imports.inc' include '../../fdo.inc' include '../../struct.inc' public START public version ; USB constants DEVICE_DESCR_TYPE = 1 CONFIG_DESCR_TYPE = 2 STRING_DESCR_TYPE = 3 INTERFACE_DESCR_TYPE = 4 ENDPOINT_DESCR_TYPE = 5 DEVICE_QUALIFIER_DESCR_TYPE = 6 CONTROL_PIPE = 0 ISOCHRONOUS_PIPE = 1 BULK_PIPE = 2 INTERRUPT_PIPE = 3 ; USB HID constants HID_DESCR_TYPE = 21h REPORT_DESCR_TYPE = 22h PHYSICAL_DESCR_TYPE = 23h ; LibUSB constatnts LIBUSB_REQUEST_TYPE_STANDARD = (0x00 shl 5) LIBUSB_REQUEST_TYPE_CLASS = (0x01 shl 5) LIBUSB_REQUEST_TYPE_VENDOR = (0x02 shl 5) LIBUSB_REQUEST_TYPE_RESERVED = (0x03 shl 5) LIBUSB_RECIPIENT_DEVICE = 0x00 LIBUSB_RECIPIENT_INTERFACE = 0x01 LIBUSB_RECIPIENT_ENDPOINT = 0x02 LIBUSB_RECIPIENT_OTHER = 0x03 LIBUSB_ENDPOINT_IN = 0x80 LIBUSB_ENDPOINT_OUT = 0x00 ; FTDI Constants FTDI_DEVICE_OUT_REQTYPE = (LIBUSB_REQUEST_TYPE_VENDOR or LIBUSB_RECIPIENT_DEVICE or LIBUSB_ENDPOINT_OUT) FTDI_DEVICE_IN_REQTYPE = (LIBUSB_REQUEST_TYPE_VENDOR or LIBUSB_RECIPIENT_DEVICE or LIBUSB_ENDPOINT_IN) ; Requests ;Definitions for flow control SIO_RESET =0 ;Reset the port SIO_MODEM_CTRL =1 ;Set the modem control register SIO_SET_FLOW_CTRL =2 ;Set flow control register SIO_SET_BAUD_RATE =3 ;Set baud rate SIO_SET_DATA =4 ;Set the data characteristics of the port SIO_RESET_REQUEST =SIO_RESET SIO_SET_BAUDRATE_REQUEST =SIO_SET_BAUD_RATE SIO_SET_DATA_REQUEST =SIO_SET_DATA SIO_SET_FLOW_CTRL_REQUEST =SIO_SET_FLOW_CTRL SIO_SET_MODEM_CTRL_REQUEST =SIO_MODEM_CTRL SIO_POLL_MODEM_STATUS_REQUEST=0x05 SIO_SET_EVENT_CHAR_REQUEST =0x06 SIO_SET_ERROR_CHAR_REQUEST =0x07 SIO_SET_LATENCY_TIMER_REQUEST=0x09 SIO_GET_LATENCY_TIMER_REQUEST=0x0A SIO_SET_BITMODE_REQUEST =0x0B SIO_READ_PINS_REQUEST =0x0C SIO_READ_EEPROM_REQUEST =0x90 SIO_WRITE_EEPROM_REQUEST =0x91 SIO_ERASE_EEPROM_REQUEST =0x92 SIO_RESET_SIO=0 SIO_RESET_PURGE_RX=1 SIO_RESET_PURGE_TX=2 SIO_DISABLE_FLOW_CTRL=0x0 SIO_RTS_CTS_HS =(0x1 shl 8) SIO_DTR_DSR_HS =(0x2 shl 8) SIO_XON_XOFF_HS=(0x4 shl 8) SIO_SET_DTR_MASK=0x1 SIO_SET_DTR_HIGH=( 1 or ( SIO_SET_DTR_MASK shl 8)) SIO_SET_DTR_LOW =( 0 or ( SIO_SET_DTR_MASK shl 8)) SIO_SET_RTS_MASK=0x2 SIO_SET_RTS_HIGH=( 2 or ( SIO_SET_RTS_MASK shl 8 )) SIO_SET_RTS_LOW =( 0 or ( SIO_SET_RTS_MASK shl 8 )) SIO_RTS_CTS_HS =(0x1 shl 8) ;FTDI chip type TYPE_AM=0 TYPE_BM=1 TYPE_2232C=2 TYPE_R=3 TYPE_2232H=4 TYPE_4232H=5 TYPE_232H=6 TYPE_230X=7 ;strings my_driver db 'usbother',0 nomemory_msg db 'K : no memory',13,10,0 ; Structures struct ftdi_context chipType db ? baudrate dd ? bitbangEnabled db ? readBufChunkSize dd ? writeBufChunkSize dd ? readBufPtr dd ? writeBufPtr dd ? readBufSize dd ? writeBufSize dd ? maxPacketSize dd ? interface dd ? index dd ? inEP dd ? outEP dd ? nullP dd ? lockPID dd ? next_context dd ? ends struct IOCTL handle dd ? io_code dd ? input dd ? inp_size dd ? output dd ? out_size dd ? ends struct usb_descr bLength db ? bDescriptorType db ? bcdUSB dw ? bDeviceClass db ? bDeviceSubClass db ? bDeviceProtocol db ? bMaxPacketSize0 db ? idVendor dw ? idProduct dw ? bcdDevice dw ? iManufacturer db ? iProduct db ? iSerialNumber db ? bNumConfigurations db ? ends struct conf_packet bmRequestType db ? bRequest db ? wValue dw ? wIndex dw ? wLength dw ? ends section '.flat' code readable align 16 ; The start procedure. proc START stdcall, .reason:DWORD xor eax, eax ; initialize return value cmp [.reason], 1 ; compare the argument jnz .nothing stdcall RegUSBDriver, my_driver, service_proc, usb_functions .nothing: ret endp proc AddDevice stdcall uses ebx esi edi, .config_pipe:DWORD, .config_descr:DWORD, .interface:DWORD stdcall USBGetParam, [.config_pipe], 0 mov edx, eax DEBUGF 1,'K : Detected device vendor: %x\n', [eax+usb_descr.idVendor] cmp word[eax+usb_descr.idVendor], 0x0403 jnz .notftdi mov eax, sizeof.ftdi_context call Kmalloc test eax, eax jnz @f mov esi, nomemory_msg call SysMsgBoardStr jmp .nothing @@: DEBUGF 1,'K : Adding struct to list %x\n', eax call linkedlist_add mov ebx, [.config_pipe] mov [eax + ftdi_context.nullP], ebx mov [eax + ftdi_context.index], 0 mov [eax + ftdi_context.lockPID], 0 mov [eax + ftdi_context.maxPacketSize], 64 mov [eax + ftdi_context.readBufChunkSize], 64 mov [eax + ftdi_context.writeBufChunkSize], 64 mov [eax + ftdi_context.chipType], TYPE_R jmp .slow mov cx, [edx+usb_descr.bcdDevice] DEBUGF 1, 'K : Chip type %x\n', ecx cmp cx, 0x400 jnz @f mov [eax + ftdi_context.chipType], TYPE_BM jmp .slow @@: cmp cx, 0x200 jnz @f mov [eax + ftdi_context.chipType], TYPE_AM jmp .slow @@: cmp cx, 0x500 jnz @f mov [eax + ftdi_context.chipType], TYPE_2232C jmp .slow @@: cmp cx, 0x600 jnz @f mov [eax + ftdi_context.chipType], TYPE_R jmp .slow @@: cmp cx, 0x700 jnz @f mov [eax + ftdi_context.chipType], TYPE_2232H jmp .fast @@: cmp cx, 0x900 jnz @f mov [eax + ftdi_context.chipType], TYPE_232H jmp .fast @@: cmp cx, 0x1000 jnz .slow mov [eax + ftdi_context.chipType], TYPE_230X jmp .fast .fast: add [eax + ftdi_context.maxPacketSize], 512-64 .slow: mov ebx, eax stdcall USBOpenPipe, [.config_pipe], 0x81, [ebx + ftdi_context.maxPacketSize], BULK_PIPE, 0 test eax, eax jz .nothing mov [ebx + ftdi_context.outEP], eax stdcall USBOpenPipe, [.config_pipe], 0x02, [ebx + ftdi_context.maxPacketSize], BULK_PIPE, 0 test eax, eax jz .nothing mov [ebx + ftdi_context.inEP], eax mov eax, ebx ret .notftdi: DEBUGF 1,'K : Skipping not FTDI device\n' .nothing: xor eax, eax ret endp handle equ IOCTL.handle io_code equ IOCTL.io_code input equ IOCTL.input inp_size equ IOCTL.inp_size output equ IOCTL.output out_size equ IOCTL.out_size align 4 proc service_proc stdcall uses ebx esi edi, ioctl:DWORD locals ConfPacket rb 8 EventData rd 3 endl mov edi, [ioctl] mov eax, [edi+io_code] DEBUGF 1,'K : FTDI got the request: %d\n', eax test eax, eax ;0 jz .version dec eax ;1 jz .ftdi_get_list push eax mov esi, [edi+input] mov eax, [esi+4] call linkedlist_isvalid test eax, eax pop eax jnz .endswitch dec eax jz .ftdi_lock ;2 dec eax jz .ftdi_unlock ;3 mov ebx, [esi+4] mov ecx, [ebx + ftdi_context.lockPID] cmp dword[esi], 0 jz .error cmp ecx, [esi] jz .pid_ok mov esi, [edi+output] mov dword[esi], 'LCKD' jmp .endswitch .pid_ok: dec eax jz .ftdi_get_wchunksize ;4 dec eax jz .ftdi_get_rchunksize ;5 mov edi, [edi+input] dec eax jz .ftdi_set_rchunksize ;6 dec eax jz .ftdi_set_wchunksize ;7 push eax edi mov ecx, 0x80000000 cmp eax, 8-7 je .bulkevent cmp eax, 9-7 je .bulkevent xor ecx, ecx .bulkevent: xor esi, esi call CreateEvent mov [EventData], eax mov [EventData+4], edx pop edi eax dec eax ;8 jz .ftdi_write_data dec eax ;9 jz .ftdi_read_data dec eax ;10 jz .ftdi_set_baudrate dec eax ;11 jz .ftdi_set_bitmode dec eax ;12 jz .ftdi_setrtshigh dec eax ;13 jz .ftdi_setrtslow dec eax ;14 jz .ftdi_setdtrhigh dec eax ;15 jz .ftdi_setdtrlow dec eax ;16 jz .ftdi_usb_reset dec eax ;17 jz .ftdi_setflowctrl dec eax ;18 jz .ftdi_set_event_char dec eax ;19 jz .ftdi_set_error_char dec eax ;20 jz .ftdi_set_latency_timer dec eax ;21 jz .ftdi_get_latency_timer dec eax ;22 jz .ftdi_read_pins dec eax ;23 jz .ftdi_poll_modem_status dec eax ;24 jz .ftdi_set_line_property dec eax ;25 jz .ftdi_purge_rx_buf dec eax ;26 jz .ftdi_purge_tx_buf jmp .error .version: jmp .endswitch .error: mov esi, [edi+output] mov [esi], dword 'ERR0' or [esi], eax ret .endswitch: xor eax, eax ret .eventdestroy: ;---Dirty hack begin test eax, eax jz @f mov eax, dword[ConfPacket] call Kfree @@: ;---Dirty hack end mov eax, [EventData] mov ebx, [EventData+4] call DestroyEvent jmp .endswitch .ftdi_out_control_transfer_withinp: mov dx, word[edi+8] mov word[ConfPacket+2], dx .ftdi_out_control_transfer_noinp: mov ebx, [edi+4] mov cx, word[ebx + ftdi_context.index] mov word[ConfPacket+4], cx xor cx, cx mov word[ConfPacket+6], cx .own_index: mov ebx, [edi+4] DEBUGF 1,'K : ConfPacket %x %x\n', [ConfPacket], [ConfPacket+4] lea esi, [ConfPacket] lea edi, [EventData] stdcall USBControlTransferAsync, [ebx + ftdi_context.nullP], esi, 0, 0, control_callback, edi, 0 test eax, eax jz .error mov eax, [EventData] mov ebx, [EventData+4] call WaitEvent jmp .endswitch .ftdi_setrtshigh: ;DEBUGF 1,'K : FTDI Setting RTS pin HIGH\n' mov dword[ConfPacket], (FTDI_DEVICE_OUT_REQTYPE) + (SIO_SET_MODEM_CTRL_REQUEST shl 8) + (SIO_SET_RTS_HIGH shl 16) jmp .ftdi_out_control_transfer_noinp .ftdi_setrtslow: ;DEBUGF 1,'K : FTDI Setting RTS pin LOW\n' mov dword[ConfPacket], (FTDI_DEVICE_OUT_REQTYPE) + (SIO_SET_MODEM_CTRL_REQUEST shl 8) + (SIO_SET_RTS_LOW shl 16) jmp .ftdi_out_control_transfer_noinp .ftdi_setdtrhigh: ;DEBUGF 1,'K : FTDI Setting DTR pin HIGH\n' mov dword[ConfPacket], (FTDI_DEVICE_OUT_REQTYPE) + (SIO_SET_MODEM_CTRL_REQUEST shl 8) + (SIO_SET_DTR_HIGH shl 16) jmp .ftdi_out_control_transfer_noinp .ftdi_setdtrlow: ;DEBUGF 1,'K : FTDI Setting DTR pin LOW\n' mov dword[ConfPacket], (FTDI_DEVICE_OUT_REQTYPE) + (SIO_SET_MODEM_CTRL_REQUEST shl 8) + (SIO_SET_DTR_LOW shl 16) jmp .ftdi_out_control_transfer_noinp .ftdi_usb_reset: ;DEBUGF 1,'K : FTDI Reseting\n' mov dword[ConfPacket], (FTDI_DEVICE_OUT_REQTYPE) + (SIO_RESET_REQUEST shl 8) + (SIO_RESET_SIO shl 16) jmp .ftdi_out_control_transfer_noinp .ftdi_purge_rx_buf: mov dword[ConfPacket], (FTDI_DEVICE_OUT_REQTYPE) + (SIO_RESET_REQUEST shl 8) + (SIO_RESET_PURGE_RX shl 16) jmp .ftdi_out_control_transfer_noinp .ftdi_purge_tx_buf: mov dword[ConfPacket], (FTDI_DEVICE_OUT_REQTYPE) + (SIO_RESET_REQUEST shl 8) + (SIO_RESET_PURGE_TX shl 16) jmp .ftdi_out_control_transfer_noinp .ftdi_set_bitmode: mov word[ConfPacket], (FTDI_DEVICE_OUT_REQTYPE) + (SIO_SET_BITMODE_REQUEST shl 8) jmp .ftdi_out_control_transfer_withinp .ftdi_set_line_property: mov word[ConfPacket], (FTDI_DEVICE_OUT_REQTYPE) + (SIO_SET_DATA_REQUEST shl 8) jmp .ftdi_out_control_transfer_withinp .ftdi_set_latency_timer: mov word[ConfPacket], (FTDI_DEVICE_OUT_REQTYPE) + (SIO_SET_LATENCY_TIMER_REQUEST shl 8) jmp .ftdi_out_control_transfer_withinp .ftdi_set_event_char: mov word[ConfPacket], (FTDI_DEVICE_OUT_REQTYPE) + (SIO_SET_EVENT_CHAR_REQUEST shl 8) jmp .ftdi_out_control_transfer_withinp .ftdi_set_error_char: mov word[ConfPacket], (FTDI_DEVICE_OUT_REQTYPE) + (SIO_SET_ERROR_CHAR_REQUEST shl 8) jmp .ftdi_out_control_transfer_withinp .ftdi_setflowctrl: mov dword[ConfPacket], (FTDI_DEVICE_OUT_REQTYPE) + (SIO_SET_FLOW_CTRL_REQUEST shl 8) + (0 shl 16) mov ebx, [edi+4] mov cx, word[edi+8] or ecx, [ebx + ftdi_context.index] mov word[ConfPacket+4], cx xor cx, cx mov word[ConfPacket+6], cx jmp .own_index .ftdi_read_pins: mov ebx, [edi] mov dword[ConfPacket], FTDI_DEVICE_IN_REQTYPE + (SIO_READ_PINS_REQUEST shl 8) + (0 shl 16) mov ecx, [ebx + ftdi_context.index] mov word[ConfPacket+4], cx mov word[ConfPacket+6], 1 lea esi, [ConfPacket] lea edi, [EventData] mov ecx, [ioctl] mov ecx, [ecx+output] stdcall USBControlTransferAsync, [ebx + ftdi_context.nullP], esi, ecx, 1, control_callback, edi, 0 mov eax, [EventData] mov ebx, [EventData+4] call WaitEvent jmp .endswitch .ftdi_set_wchunksize: mov ebx, [edi+4] mov ecx, [edi+8] cmp [ebx + ftdi_context.maxPacketSize], ecx jg .error mov [ebx + ftdi_context.writeBufChunkSize], ecx jmp .endswitch .ftdi_get_wchunksize: mov esi, [edi+output] mov edi, [edi+input] mov ebx, [edi+4] mov ecx, [ebx + ftdi_context.writeBufChunkSize] mov [esi], ecx jmp .endswitch .ftdi_set_rchunksize: mov ebx, [edi+4] mov ecx, [edi+8] cmp [ebx + ftdi_context.maxPacketSize], ecx jg .error mov [ebx + ftdi_context.readBufChunkSize], ecx jmp .endswitch .ftdi_get_rchunksize: mov esi, [edi+output] mov edi, [edi+input] mov ebx, [edi+4] mov ecx, [ebx + ftdi_context.readBufChunkSize] mov [esi], ecx jmp .endswitch .ftdi_write_data: mov esi, edi add esi, 12 mov ebx, [edi+4] ;---Dirty hack begin mov eax, [edi+8] call Kmalloc test eax, eax jnz @f mov esi, nomemory_msg call SysMsgBoardStr jmp .eventdestroy @@: mov dword[ConfPacket], eax mov ecx, [edi+8] push edi esi mov edi, eax rep movsb pop esi edi ;---Dirty hack end xor ecx, ecx ; ecx - offset .write_loop: mov edx, [edi+8] ; edx - write_size sub edx, ecx cmp edx, [ebx + ftdi_context.writeBufChunkSize] jle .lessthanchunk_write mov edx, [ebx + ftdi_context.writeBufChunkSize] .lessthanchunk_write: add esi, ecx lea eax, [EventData] push ecx ebx esi edi stdcall USBNormalTransferAsync, [ebx + ftdi_context.inEP], esi, edx, bulk_callback, eax, 1 mov eax, [EventData] mov ebx, [EventData+4] call WaitEvent mov eax, [EventData] mov ebx, [EventData+4] call ClearEvent pop edi esi ebx ecx cmp [EventData+8], -1 jz .error add ecx, [EventData+8] cmp ecx, [edi+8] jge .eventdestroy jmp .write_loop .ftdi_read_data: mov edi, [ioctl] mov esi, [edi+input] mov edi, [edi+output] mov ebx, [esi+4] ;---Dirty hack begin mov eax, [esi+8] call Kmalloc test eax, eax jnz @f mov esi, nomemory_msg call SysMsgBoardStr jmp .eventdestroy @@: mov edi, eax mov dword[ConfPacket], eax ; Store in ConfPAcket ptr to allocated memory ;---Dirty hack end xor ecx, ecx .read_loop: mov edx, [esi+8] cmp ecx, edx jge .read_end;jge .eventdestroy ;part of Dirty hack sub edx, ecx cmp edx, [ebx + ftdi_context.readBufChunkSize] jl .lessthanchunk_read mov edx, [ebx + ftdi_context.readBufChunkSize] .lessthanchunk_read: lea eax, [EventData] add edi, ecx push esi edi ecx ebx stdcall USBNormalTransferAsync, [ebx + ftdi_context.outEP], edi, edx, bulk_callback, eax, 1 mov eax, [EventData] mov ebx, [EventData+4] call WaitEvent mov eax, [EventData] mov ebx, [EventData+4] call ClearEvent pop ebx ecx edi esi cmp [EventData+8], -1 jz .error add ecx, [EventData+8] DEBUGF 1, 'K : In buffer %x\n', [edi] jmp .read_loop ;---Dirty hack begin .read_end: mov esi, dword[ConfPacket] mov edi, [ioctl] mov ecx, [edi+input] mov ecx, [ecx+8] mov edi, [edi+output] rep movsb jmp .eventdestroy ;---Dirty hack end .ftdi_poll_modem_status: mov ebx, [edi+4] mov dword[ConfPacket], FTDI_DEVICE_IN_REQTYPE + (SIO_POLL_MODEM_STATUS_REQUEST shl 8) + (0 shl 16) mov ecx, [ebx + ftdi_context.index] mov word[ConfPacket+4], cx mov word[ConfPacket+6], 1 lea esi, [ConfPacket] lea edi, [EventData] mov ecx, [ioctl] mov ecx, [ecx+output] stdcall USBControlTransferAsync, [ebx + ftdi_context.nullP], esi, ecx, 2, control_callback, edi, 0 mov eax, [EventData] mov ebx, [EventData+4] call WaitEvent mov ax, word[ecx] xchg ah, al and ah, 0xFF mov word[ecx], ax jmp .endswitch .ftdi_get_latency_timer: mov ebx, [edi+4] mov dword[ConfPacket], FTDI_DEVICE_IN_REQTYPE + (SIO_GET_LATENCY_TIMER_REQUEST shl 8) + (0 shl 16) mov ecx, [ebx + ftdi_context.index] mov word[ConfPacket+4], cx mov word[ConfPacket+6], 1 lea esi, [ConfPacket] lea edi, [EventData] mov ecx, [ioctl] mov ecx, [ecx+output] stdcall USBControlTransferAsync, [ebx + ftdi_context.nullP], esi, ecx, 2, control_callback, edi, 0 mov eax, [EventData] mov ebx, [EventData+4] call WaitEvent jmp .endswitch .ftdi_get_list: call linkedlist_gethead test eax, eax jz .endswitch mov edi, [edi+output] push edi add edi, 4 xor ecx, ecx .nextdev: inc ecx cmp [eax + ftdi_context.lockPID], 0 jnz .dev_is_locked mov dword[edi], 'NLKD' jmp .nextfields .dev_is_locked: mov dword[edi], 'LCKD' .nextfields: mov bl, [eax + ftdi_context.chipType] mov [edi+4], ebx mov [edi+8], eax add edi, 12 mov eax, [eax + ftdi_context.next_context] test eax, eax jnz .nextdev pop edi mov [edi], ecx jmp .endswitch .ftdi_lock: mov esi, [edi+input] mov ebx, [esi+4] mov eax, [ebx + ftdi_context.lockPID] DEBUGF 1, 'K : to PID %x from PID %x\n', [esi], eax test eax, eax jnz .lockedby mov eax, [esi] mov [ebx + ftdi_context.lockPID], eax .lockedby: mov edi, [edi+output] mov [edi], eax jmp .endswitch .ftdi_unlock: mov esi, [edi+input] mov edi, [edi+output] mov ebx, [esi+4] mov eax, [ebx + ftdi_context.lockPID] DEBUGF 1, 'K : to PID %x from PID %x\n', [esi], eax cmp eax, [esi] jnz .unlockimp mov [ebx + ftdi_context.lockPID], 0 mov dword[edi], 0 jmp .endswitch .unlockimp: mov [edi], eax jmp .endswitch H_CLK = 120000000 C_CLK = 48000000 .ftdi_set_baudrate: mov ebx, [edi+4] cmp [ebx + ftdi_context.chipType], TYPE_2232H jl .c_clk imul eax, [edi+8], 10 cmp eax, H_CLK / 0x3FFF jle .c_clk .h_clk: cmp dword[edi+8], H_CLK/10 jl .h_nextbaud1 xor edx, edx mov ecx, H_CLK/10 jmp .calcend .c_clk: cmp dword[edi+8], C_CLK/16 jl .c_nextbaud1 xor edx, edx mov ecx, C_CLK/16 jmp .calcend .h_nextbaud1: cmp dword[edi+8], H_CLK/(10 + 10/2) jl .h_nextbaud2 mov edx, 1 mov ecx, H_CLK/(10 + 10/2) jmp .calcend .c_nextbaud1: cmp dword[edi+8], C_CLK/(16 + 16/2) jl .c_nextbaud2 mov edx, 1 mov ecx, C_CLK/(16 + 16/2) jmp .calcend .h_nextbaud2: cmp dword[edi+8], H_CLK/(2*10) jl .h_nextbaud3 mov edx, 2 mov ecx, H_CLK/(2*10) jmp .calcend .c_nextbaud2: cmp dword[edi+8], C_CLK/(2*16) jl .c_nextbaud3 mov edx, 2 mov ecx, C_CLK/(2*16) jmp .calcend .h_nextbaud3: mov eax, H_CLK*16/10 ; eax - best_divisor xor edx, edx div dword[edi+8] ; [edi+8] - baudrate push eax and eax, 1 pop eax shr eax, 1 jz .h_rounddowndiv ; jump by result of and eax, 1 inc eax .h_rounddowndiv: cmp eax, 0x20000 jle .h_best_divok mov eax, 0x1FFFF .h_best_divok: mov ecx, eax mov eax, H_CLK*16/10 xor edx, edx div ecx xchg ecx, eax ; ecx - best_baud push ecx and ecx, 1 pop ecx shr ecx, 1 jz .rounddownbaud inc ecx jmp .rounddownbaud .c_nextbaud3: mov eax, C_CLK ; eax - best_divisor xor edx, edx div dword[edi+8] ; [edi+8] - baudrate push eax and eax, 1 pop eax shr eax, 1 jnz .c_rounddowndiv ; jump by result of and eax, 1 inc eax .c_rounddowndiv: cmp eax, 0x20000 jle .c_best_divok mov eax, 0x1FFFF .c_best_divok: mov ecx, eax mov eax, C_CLK xor edx, edx div ecx xchg ecx, eax ; ecx - best_baud push ecx and ecx, 1 pop ecx shr ecx, 1 jnz .rounddownbaud inc ecx .rounddownbaud: mov edx, eax ; edx - encoded_divisor shr edx, 3 and eax, 0x7 push 7 6 5 1 4 2 3 0 mov eax, [esp+eax*4] shl eax, 14 or edx, eax add esp, 32 .calcend: mov eax, edx ; eax - *value mov ecx, edx ; ecx - *index and eax, 0xFFFF cmp [ebx + ftdi_context.chipType], TYPE_2232H jge .foxyindex shr ecx, 16 jmp .preparepacket .foxyindex: shr ecx, 8 and ecx, 0xFF00 or ecx, [ebx + ftdi_context.index] .preparepacket: mov word[ConfPacket], (FTDI_DEVICE_OUT_REQTYPE) + (SIO_SET_BAUDRATE_REQUEST shl 8) mov word[ConfPacket+2], ax mov word[ConfPacket+4], cx mov word[ConfPacket+6], 0 jmp .own_index endp restore handle restore io_code restore input restore inp_size restore output restore out_size align 4 proc control_callback stdcall uses ebx edi esi, .pipe:DWORD, .status:DWORD, .buffer:DWORD, .length:DWORD, .calldata:DWORD DEBUGF 1, 'K : status is %d\n', [.status] mov ecx, [.calldata] mov eax, [ecx] mov ebx, [ecx+4] mov edx, [.status] mov [ecx+8], edx xor esi, esi xor edx, edx call RaiseEvent ret endp proc bulk_callback stdcall uses ebx edi esi, .pipe:DWORD, .status:DWORD, .buffer:DWORD, .length:DWORD, .calldata:DWORD DEBUGF 1, 'K : status is %d\n', [.status] mov ecx, [.calldata] mov eax, [ecx] mov ebx, [ecx+4] cmp [.status], 0 jz .normal cmp [.status], 9 jne .error .normal: mov edx, [.length] mov [ecx+8], edx jmp .ok .error: mov [ecx+8], dword -1 .ok: xor esi, esi xor edx, edx call RaiseEvent ret endp proc DeviceDisconnected stdcall uses ebx esi edi, .device_data:DWORD DEBUGF 1, 'K : FTDI deleting device data %x\n', [.device_data] mov eax, [.device_data] call linkedlist_delete ret endp include 'linkedlist.inc' ; Exported variable: kernel API version. align 4 version dd 50005h ; Structure with callback functions. usb_functions: dd 12 dd AddDevice dd DeviceDisconnected ;for DEBUGF macro include_debug_strings ; for uninitialized data ;section '.data' data readable writable align 16