Steve, Who calls ide_init_hwif_ports (function in asm-ppc/ide.h) if CONFIG_BLK_DEV_IDEPCI is not configured and ide_default_io_base always returns 0?
That's what's puzzling me. David ----- Forwarded by David Ho/NMX/CA on 02/11/2004 04:42 PM ----- DavidHo at nanometrics.ca Sent by: To: Steven Scholz owner-linuxppc-embedded at lists.l <steven.scholz at imc-berlin.de> inuxppc.org cc: linuxppc-embedded at lists.linuxppc.org Subject: Re: EXT_DIRECT IDE Mode 02/11/2004 01:54 PM Steve, I'm using a variant of the 2.4.18 kernel from timesys. The kernel is compiled with those settings. (in your email) I had to add a call to m8xx_ide_init in m8xx-setup.c at the end of platform_init. I can only find these defines in ide-m8xx.c. I am thinking there must be more to it than the one file. Thanks for your help, David DavidHo at nanometrics.ca wrote: > My application needs a compactflash and a 1.8" disk drive connected to the > MPC852T. Since the compact flash has already taken up the only PCMCIA > slot, the disk drive is directly attached to the PPC bus so I need to > enable EXT_DIRECT for the disk drive. Ok. > I haven't been able to make linux call the ide_init_hwif function. I > looked at how ide.c works and it looks like it enables IDE interfaces on > the PCI first (ide_default_io_base returns non-zero). I haven't yet been > able to find out where it call my function. > > Would you be able to tell me how you got this mode working. I do if you tell me which kernel version you tried. I guess you have CONFIG_BLK_DEV_MPC8xx_IDE=y # CONFIG_IDE_8xx_PCCARD is not set # CONFIG_IDE_8xx_DIRECT is not set CONFIG_IDE_EXT_DIRECT=y in your .config file? Steven ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/