[PATCH] nforce2 dma enabled

[tstone@t-online.de (Tim Krieglstein)]

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Hi 
I just got a new toy an epox EP-8RDA. Since there is an nforce2 chipset
onboard and only support for the nforce (whithout 2) in the 2.4.20-ac2
kernel. I just concluded that the new ide driver should be pretty
similar to the old one. i had absolutly no documentation! so be
careful! Personally i did an full backup *before* fiddling with the ide
driver :)

The patch just adds the pci id of the nforce ide controller and added a
new information block to the ide_pci_device_t structure. Also i added an
entry to pci_device_id.

This is my first public patch so suggestions or other feedback is very
welcome. I would also like to know why the lspci command still tells me
this is an unknown device after applying my patch seen below. Also if
someone has a hint why the usb-devices have no interrupt assigned and
thus are not available is very welcome (probably disable acpi?).

However currently i am runing with following settings enabled (by hand):
/dev/hda:
 multcount    = 16 (on)
 IO_support   =  1 (32-bit)
 unmaskirq    =  1 (on)
 using_dma    =  1 (on)
 keepsettings =  1 (on)
 readonly     =  0 (off)
 readahead    =  8 (on)
 geometry     = 15505/240/63, sectors = 234441648, start = 0

Have fun
Tim

PS: Please CC me since im am currently not subscribed to the list

[-- Attachment #2: nforce2.patch --]
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diff -r -C 2 ../linux-2.4.20/drivers/ide/pci/nvidia.c ./drivers/ide/pci/nvidia.c
*** ../linux-2.4.20/drivers/ide/pci/nvidia.c	Thu Dec 12 14:22:55 2002
--- ./drivers/ide/pci/nvidia.c	Thu Dec 12 13:53:11 2002
***************
*** 342,345 ****
--- 342,346 ----
  static struct pci_device_id nforce_pci_tbl[] __devinitdata = {
  	{ PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_IDE, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+ 	{ PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2_IDE, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1},
  	{ 0, },
  };
diff -r -C 2 ../linux-2.4.20/drivers/ide/pci/nvidia.h ./drivers/ide/pci/nvidia.h
*** ../linux-2.4.20/drivers/ide/pci/nvidia.h	Thu Dec 12 14:22:55 2002
--- ./drivers/ide/pci/nvidia.h	Thu Dec 12 13:55:06 2002
***************
*** 44,47 ****
--- 44,62 ----
  		bootable:	ON_BOARD,
  		extra:		0,
+ 	},
+ 
+ 	{
+ 		vendor:		PCI_VENDOR_ID_NVIDIA,
+ 		device:		PCI_DEVICE_ID_NVIDIA_NFORCE2_IDE,
+ 		name:		"NFORCE2",
+ 		init_chipset:	init_chipset_nforce,
+ 		init_iops:	NULL,
+ 		init_hwif:	init_hwif_nforce,
+ 		init_dma:	init_dma_nforce,
+ 		channels:	2,
+ 		autodma:	AUTODMA,
+ 		enablebits:	{{0x50,0x01,0x01}, {0x50,0x02,0x02}},
+ 		bootable:	ON_BOARD,
+ 		extra:		0,
  	}
  };
Only in ../linux-2.4.20/drivers/net/wan: hdlc.c
diff -r -C 2 ../linux-2.4.20/include/linux/pci_ids.h ./include/linux/pci_ids.h
*** ../linux-2.4.20/include/linux/pci_ids.h	Thu Dec 12 14:22:55 2002
--- ./include/linux/pci_ids.h	Thu Dec 12 13:38:56 2002
***************
*** 914,917 ****
--- 914,918 ----
  #define PCI_DEVICE_ID_NVIDIA_IGEFORCE2		0x01a0
  #define PCI_DEVICE_ID_NVIDIA_NFORCE_IDE		0x01bc
+ #define PCI_DEVICE_ID_NVIDIA_NFORCE2_IDE	0x0065
  #define PCI_DEVICE_ID_NVIDIA_GEFORCE3		0x0200
  #define PCI_DEVICE_ID_NVIDIA_GEFORCE3_1		0x0201