Intravision/reactos
1
0
Fork 0
mirror of https://github.com/reactos/reactos.git synced 2024-12-27 17:44:45 +00:00
Code Issues Projects Releases Packages Wiki Activity

Oops... forgot to use physical address when programming the dma controller

Browse source 
svn path=/trunk/; revision=1772
This commit is contained in:
Phillip Susi 2001-04-02 23:54:37 +00:00
parent 9dfa505536
commit 0858e6f0fb
1 changed files with 4 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
reactos/ntoskrnl/hal/x86/adapter.c
View file

@ -1,4 +1,4 @@
/* $Id: adapter.c,v 1.5 2001/03/31 16:46:59 jfilby Exp $ /* $Id: adapter.c,v 1.6 2001/04/02 23:54:37 phreak Exp $
* *
* COPYRIGHT: See COPYING in the top level directory * COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel * PROJECT: ReactOS kernel
@ -118,13 +118,14 @@ IoMapTransfer (PADAPTER_OBJECT AdapterObject,
PULONG Length, PULONG Length,
BOOLEAN WriteToDevice) BOOLEAN WriteToDevice)
{ {
LARGE_INTEGER Address; PHYSICAL_ADDRESS Address;
// program up the dma controller, and return // program up the dma controller, and return
// if it is a write to the device, copy the caller buffer to the low buffer // if it is a write to the device, copy the caller buffer to the low buffer
if( WriteToDevice ) if( WriteToDevice )
memcpy( MapRegisterBase, memcpy( MapRegisterBase,
MmGetSystemAddressForMdl( Mdl ) + ( (DWORD)CurrentVa - (DWORD)MmGetMdlVirtualAddress( Mdl ) ), MmGetSystemAddressForMdl( Mdl ) + ( (DWORD)CurrentVa - (DWORD)MmGetMdlVirtualAddress( Mdl ) ),
*Length ); *Length );
Address = MmGetPhysicalAddress( MapRegisterBase );
// port 0xA is the dma mask register, or a 0x10 on to the channel number to mask it // port 0xA is the dma mask register, or a 0x10 on to the channel number to mask it
WRITE_PORT_UCHAR( (PVOID)0x0A, AdapterObject->Channel | 0x10 ); WRITE_PORT_UCHAR( (PVOID)0x0A, AdapterObject->Channel | 0x10 );
// write zero to the reset register // write zero to the reset register
@ -132,7 +133,7 @@ IoMapTransfer (PADAPTER_OBJECT AdapterObject,
// mode register, or channel with 0x4 for write memory, 0x8 for read memory, 0x10 for non auto initialize // mode register, or channel with 0x4 for write memory, 0x8 for read memory, 0x10 for non auto initialize
WRITE_PORT_UCHAR( (PVOID)0x0B, AdapterObject->Channel | ( WriteToDevice ? 0x8 : 0x4 ) ); WRITE_PORT_UCHAR( (PVOID)0x0B, AdapterObject->Channel | ( WriteToDevice ? 0x8 : 0x4 ) );
// set the 64k page register for the channel // set the 64k page register for the channel
WRITE_PORT_UCHAR( AdapterObject->PagePort, (UCHAR)(((ULONG)MapRegisterBase)>>16) ); WRITE_PORT_UCHAR( AdapterObject->PagePort, (UCHAR)(((ULONG)Address.QuadPart)>>16) );
// low, then high address byte, which is always 0 for us, because we have a 64k alligned address // low, then high address byte, which is always 0 for us, because we have a 64k alligned address
WRITE_PORT_UCHAR( AdapterObject->OffsetPort, 0 ); WRITE_PORT_UCHAR( AdapterObject->OffsetPort, 0 );
WRITE_PORT_UCHAR( AdapterObject->OffsetPort, 0 ); WRITE_PORT_UCHAR( AdapterObject->OffsetPort, 0 );