[PATCH] nforce2 dma enabled

[PATCH] nforce2 dma enabled

[Tim Krieglstein]

[-- Attachment #1: Type: text/plain, Size: 1277 bytes --]

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 --]
[-- Type: text/plain, Size: 1751 bytes --]

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

Re: [PATCH] nforce2 dma enabled

[Alan Cox]

On Thu, 2002-12-12 at 14:06, Tim Krieglstein wrote:
> 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.

Thanks. 

> 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

lspci uses its own tables in user space

> someone has a hint why the usb-devices have no interrupt assigned and
> thus are not available is very welcome (probably disable acpi?).

The BIOS didnt assign one. Since we don't have any useful docs we also
can't reassign one unless the BIOS does it - which it might do.