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Patch to allow XBox-users to use the onboard nve(4) nForce ethernet driver.

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The patch crudely forces the NIC out of operating mode before the nve(4)
driver can initialize it; this is required to properly initialize the NIC.

It is XBox-specific, as this condition can only occur on XBoxes (Most loaders
will simply leave the NIC running, forcing us to use a crude workaround like
this to get it in a workable condition). Due to the XBox-only aspect, this has
been solved in XBox-specific initialization code and not within nve(4).

Reviewed by:	imp
Approved by:	imp (mentor)
No objection:	bz@, obrien@, q@ontheweb.com.au
This commit is contained in:
Rink Springer 2006-02-04 10:01:33 +00:00
parent 73aba427fe
commit aaadec7cac
2 changed files with 29 additions and 1 deletions
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2
sys/i386/conf/XBOX
View File

@ -101,3 +101,5 @@ device rue # RealTek RTL8150 USB Ethernet
device sound
device snd_ich # nForce audio
device nve # nVidia nForce MCP on-board Ethernet Networking

28
sys/i386/xbox/xbox.c
View File

@ -27,10 +27,13 @@
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/eventhandler.h>
#include <sys/reboot.h>
#include <machine/xbox.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include "opt_global.h"
#ifndef I686_CPU
@ -49,12 +52,35 @@ xbox_poweroff(void* junk, int howto)
static void
xbox_init(void)
{
char* ptr;
if (!arch_i386_is_xbox)
return;
/* register our poweroff function */
EVENTHANDLER_REGISTER (shutdown_final, xbox_poweroff, NULL,
SHUTDOWN_PRI_LAST);
/*
* Some XBOX loaders, such as Cromwell, have a flaw which cause the
* nve(4) driver to fail attaching to the NIC.
*
* This is because they leave the NIC running; this will cause the
* Nvidia driver to fail as the NIC does not return any sensible
* values and thus fails attaching (using an error 0x5, this means
* it cannot find a valid PHY)
*
* We bluntly tell the NIC to stop whatever it's doing; this makes
* nve(4) attach correctly. As the NIC always resides at
* 0xfef00000-0xfef003ff on an XBOX, we simply hardcode this address.
*/
ptr = pmap_mapdev (0xfef00000, 0x400);
*(uint32_t*)(ptr + 0x188) = 0; /* clear adapter control field */
pmap_unmapdev ((vm_offset_t)ptr, 0x400);
}
SYSINIT(xbox, SI_SUB_CONFIGURE, SI_ORDER_MIDDLE, xbox_init, NULL)
/*
* This must be called before the drivers, as the if_nve(4) driver will fail
* if we do not do this in advance.
*/
SYSINIT(xbox, SI_SUB_DRIVERS, SI_ORDER_FIRST, xbox_init, NULL)