📄 hubdisco.pas
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{ Sample Program uses USB.PAS }
{ -------------------------------------------------------------------------- }
{ Configures an USB 4-port-HUB-Device and enables its downstream ports }
{ (c) 1998 by Dieter Pawelczak, <dieterp@bigfoot.de> }
{ This is public domain Software - selling this software is prohibeted! }
{ -------------------------------------------------------------------------- }
{ For more info seek www.usb.org }
uses dutils,pci,usb,dos,crt;
Var DeviceID,VendorID:word; { PCI-BUS USB Device }
BusNumber,FunctionNumber:Byte; { PCI-BUS Address }
Description:string; { PCI-BUS Ddevice Description }
{ Helpers }
result:longint;
IOSpace:word;
hwint:word;
dummytimer:word;
hwactive:boolean;
flbase:framelistpointer;
flptr:framelist;
var testbuffer:array[0..1279] of byte;
const deviceaddress=1;
const preferredHWInterrupt=3; { if not configured then use this HW-interrupt }
preferredIOSpace=$120; { if not configured then use this IO Addressspace }
{Requests to enable HUB}
const SetAddressDescriptor : USBRequest =
(bmRequestType:$00;bRequest:$5;wValue:$0001;
{ Address for USB device at port 1 }
wIndex:$000;wLength:$0000);
const GetHubDescriptor : USBRequest =
(bmRequestType:$A0;bRequest:$06;wValue:$0001;wIndex:$0000;wLength:$0012);
const SetConfiguration : USBRequest =
(bmRequestType:$00;bRequest:$9;wValue:$0001;wIndex:$0000;wLength:$000);
const GetConfiguration : USBRequest =
(bmRequestType:$00;bRequest:$8;wValue:$0001;wIndex:$0000;wLength:$000);
const GetHubStatus : USBRequest =
(bmRequestType:$A0;bRequest:$0;wValue:$000;wIndex:$0000;wLength:$004);
const GetDeviceDescriptor : USBRequest =
(bmRequestType:$80;bRequest:$06;wValue:$0001;wIndex:$0000;wLength:$008);
const SetHubPortPowerFeature : USBRequest =
(bmRequestType:$23;bRequest:$3;wValue:$0008;wIndex:$0001;wLength:$000);
var oldUsbInt:pointer; { store original Interrupt service routine }
serviceInt:word; { HW-INT VEC != SW-INT VEC }
procedure slaveInterrupt;interrupt;
begin
cprint(1,24,' XXX ',48); { display IRQ call }
inc(dummytimer);
port[$20]:=$20;
port[$A0]:=$20;
end;
procedure masterinterrupt;interrupt;
begin
inc(dummytimer);
cprint(1,24,' XXX ',48); { display IRQ call }
port[$20]:=$20;
end;
procedure USBStatus;
var status,comm:word;
begin
status:=UsbReadStatusReg;
comm:=UsbReadCommandReg;
writeln('S:',bins8(status),'=',hexs8(status),' C:',bins8(Comm),'=',hexs8(comm),
' FN:',hexs16(USBReadFrameNumberReg),' FB:',hexs(USBreadFrameBaseReg)+
' PS:',bins16(USBreadPort0Reg),'=',hexs8(USBreadPort0Reg));
USBWriteStatusReg($ffff);
end;
var i:word;
sampleTD:^transferDescriptor;
sampleTD1:^transferDescriptor;
sampleTD2:^transferDescriptor;
sampleTD3:^transferDescriptor;
sampleTD4:^transferDescriptor;
sampleTD5:^transferDescriptor;
Label DoItAgain;
begin
clrscr;
assign(output, '');rewrite(output);
writeln('Testprogramm to detect and initialize the USB controller');
writeln('and switch through a 4 PORT Hub');
writeln;
{ Create TD for HUB initialization }
sampleTD:=CreateTransferDescriptor(true{ Terminate } ,
false { Queue },
false { Depth },
0 { Link },
$0 { Actlen },
$80 { $80 = active Status },
true { IOC },
false { IOS },
false { LS } ,
1 { C_error: },
false { SPD },
$2d { e1 = OUT 2d { 2d PID = SETUP },
0 , { Deviceaddress }
0 { EndPt },
false { DataToggle },
$7 { MaxLen },
getPtrBase(@SetAddress));
sampleTD1:=CreateTransferDescriptor(true{ Terminate } ,
false { Queue },
false { Depth },
0{ Link },
$7ff { Actlen },
$80 { $80=active Status },
true { IOC },
false { IOS },
false { LS } ,
1 { C_error: },
false { SPD },
$69 { 69 = PID = IN },
0 { DeviceAddress },
0 { EndPt },
true { DataToggle },
$7ff { MaxLen },
getPtrBase(@testbuffer) { BufferPtr });
sampleTD2:=CreateTransferDescriptor(true{ Terminate } ,
false { Queue },
false { Depth },
0 { Link },
$0 { Actlen },
$80 { $80 = active Status },
true { IOC },
false { IOS },
false { LS } ,
1 { C_error: },
false { SPD },
$2d { e1 = OUT 2d { 2d PID = SETUP },
1 , { Deviceaddress }
0 { EndPt },
false { DataToggle },
$7 { MaxLen },
getPtrBase(@SetConfiguration));
sampleTD3:=CreateTransferDescriptor(true{ Terminate } ,
false { Queue },
false { Depth },
0{ Link },
$7ff { Actlen },
$80 { $80=active Status },
true { IOC },
false { IOS },
false { LS } ,
1 { C_error: },
false { SPD },
$69 { 69 = PID = IN },
1 { DeviceAddress },
0 { EndPt },
true { DataToggle },
$7ff { MaxLen },
getPtrBase(@testbuffer) { BufferPtr });
sampleTD4:=CreateTransferDescriptor(true{ Terminate } ,
false { Queue },
false { Depth },
0 { Link },
$0 { Actlen },
$80 { $80 = active Status },
true { IOC },
false { IOS },
false { LS } ,
1 { C_error: },
false { SPD },
$2d { e1 = OUT 2d { 2d PID = SETUP },
1 , { Deviceaddress }
0 { EndPt },
false { DataToggle },
$7 { MaxLen },
getPtrBase(@SetHubPortPowerFeature));
sampleTD5:=CreateTransferDescriptor(true{ Terminate } ,
false { Queue },
false { Depth },
0{ Link },
$7ff { Actlen },
$80 { $80=active Status },
true { IOC },
false { IOS },
false { LS } ,
1 { C_error: },
false { SPD },
$69 { 69 = PID = IN },
1 { DeviceAddress },
0 { EndPt },
true { DataToggle },
$7ff { MaxLen },
getPtrBase(@testbuffer) { BufferPtr });
{ IF VR-mode then abort }
if detectvirtualrealmode then
begin
writeln('System is running under V-Real Mode - abort');
halt(3);
end;
{ if no PCI-Bios then abort }
if not detectPCIBios then
begin
writeln('PCI-BIOS not supported - abort!');
halt(3);
end;
{ Get USB-Controller (PCI-Configuration) }
if USBdetect(DeviceId,VendorId,BusNumber,FunctionNumber,description) then
begin
writeln(description);
writeln('---------------------');
writeln('DeviceID:',hexs(DeviceId));
writeln('VendorID:',hexs(VendorId));
writeln('BusNumber:',hexs(BusNumber));
writeln('FunctionNumber:',hexs(FunctionNumber));
end;
{ Detect configured IO-Space Address }
if USBGetDeviceIOSpace(IOSpace) then
writeln('Maped I/O-Space: ',hexs(iospace));
{ Install IO-Space Address }
if iospace<$100 then
if USBSetDeviceIOSpace(preferredIOSpace) then
if USBGetDeviceIOSpace(IOSpace) then
writeln('Maped I/O-Space: ',hexs(iospace));
{ Enable PCI-Master }
USBStatus;
writeln('USB enable:',USBEnable);
USBStatus;
{ Set Software programmable bit to check if IO-Space settings work }
USBStatus;
{ Allocate page aligned Framelist }
USBAllocateFrameList(FlPtr,FLbase);
{ Detect configured HW-Interrupt }
USBGetInterruptNumber(hwint,hwactive);
writelN('HW-Interrupt:',hwint:2,' - Active:',hwactive);
{ Install HW-interrupt and Interrupt service routine }
hwint:=preferredHWInterrupt;
if hwint>7 then
begin
serviceInt:=hwint+$70;
getintvec(serviceInt,oldUsbInt);
setintvec(serviceInt,@slaveInterrupt);
end else
begin
serviceInt:=hwint+$8;
getintvec(serviceInt,oldUsbInt);
setintvec(serviceInt,@masterInterrupt);
end;
USBSetInterruptNumber(9,false);
USBSetInterruptNumber(hwint,True);
{ Re-Check... }
USBGetInterruptNumber(hwint,hwactive);
USBWriteInterruptReg($0f); { enable all interrupt occurences }
writelN('HW-Interrupt:',hwint:2,' - Active:',hwactive);
usbstatus;
InsertTransferDescriptorInFrameList(00, SampleTD);
InsertTransferDescriptorInFrameList(20, SampleTD1);
InsertTransferDescriptorInFrameList(40, SampleTD2);
InsertTransferDescriptorInFrameList(60, SampleTD3);
InsertTransferDescriptorInFrameList(80, SampleTD4);
InsertTransferDescriptorInFrameList(100, SampleTD5);
DoItAgain:
{ wait for attachement }
repeat
until (usbReadPort0Reg and 1=1) or keypressed;
usbstatus;
usbWritePort0Reg(512+8+2); { Port Reset }
usbstatus;
delay(50);
usbstatus;
usbWritePort0Reg($95);
usbWritePort0Reg($4+8+2);
usbWriteFrameNumberReg(0);
usbcommandrun; { start from FrameList 0 }
usbWritePort0Reg($4+8+2);
usbWritePort0Reg($4+8+2);
repeat
usbWritePort0Reg($4+8+2);
{ Port Enable } begin delay(100);usbstatus; end;
if (sampleTD5^.status<>$80) then
begin
sampleTD5^.status:=$80;
sampleTD4^.status:=$80;
inc(SetHubPortPowerFeature.windex);
if SetHubPortPowerFeature.windex>5 then
begin
SetHubPortPowerFeature.windex:=0;
usbCommandstop;
sampleTD^.status:=$80;
sampleTD1^.status:=$80;
sampleTD2^.status:=$80;
sampleTD3^.status:=$80;
goto DoItAgain;
end;
end;
until keypressed;
delay(10);
usbcommandstop;
usbstatus;
writeln('Calls to USB interrupt:',dummytimer);
USBWriteInterruptReg($00); { Disable all interrupt occurences }
setintvec(serviceInt,oldUsbInt);
writeln('USB disable:',USBDisable);
USBdone; { Restore old IRQ values }
USBprintTD(sampleTD);
USBprintTD(sampleTD1);
USBprintTD(sampleTD2);
USBprintTD(sampleTD3);
USBprintTD(sampleTD4);
USBprintTD(sampleTD5);
writeln;
end.
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