Messages in this thread Patch in this message | | | Date | Wed, 13 Sep 2000 20:43:58 -0400 | From | Daniel Jacobowitz <> | Subject | Re: New topic (PowerPC Linux PCI HELL) |
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On Wed, Sep 13, 2000 at 05:29:58PM -0700, Andre Hedrick wrote: > > Okay who can teach me how to force hooks and ram this down the PPC > > pci_write_config_word(dev, PCI_COMMAND, 0x05); > > I have all the address registered. > My new PPC G3 (7600/132) toy is not allowing IO's on PCI cards to come > alive. Thus I get some of the most beuatiful lockups ever. > I suspect that this needs to be handled down in the arch. > > ./linux/arch/ppc/kernel/{chrp_pci.c|mbx_pci.c|pmac_pci.c|prep_pci.c} > > Basically I can not get the IO's active, regardless of BIOS on the card. > Yes this is the old trick that used to work of making ix86 cards run in > non ix86-pci slots. > > Here is the fun part, I have a native mac/ppc Ultra-66 card that is fin > under Mac OS, but the IO's are not enable in linux and it crash like a big > dog also.
I'm going to bet you need to look at Michel Lanners' (did I spell that right this time?) PCI patches. For instance, I've always needed this hideous patch on my 7300/200 to get a Promise Ultra66 card to work:
diff -ur merging-bk/drivers/block/ide-pci.c work-bk/drivers/block/ide-pci.c --- merging-bk/drivers/block/ide-pci.c Tue Apr 4 22:19:16 2000 +++ work-bk/drivers/block/ide-pci.c Thu Mar 9 15:33:25 2000 @@ -468,6 +468,15 @@ printk("%s: error accessing PCI regs\n", d->name); return; } +#ifdef __powerpc__ + if (!(pcicmd & PCI_COMMAND_IO)) { /* is device disabled? */ + pci_write_config_word(dev, PCI_COMMAND, pcicmd | PCI_COMMAND_IO); + if (pci_read_config_word(dev, PCI_COMMAND, &pcicmd)) { + printk("%s: error accessing PCI regs\n", d->name); + return; + } + } +#endif if (!(pcicmd & PCI_COMMAND_IO)) { /* is device disabled? */ /* * PnP BIOS was *supposed* to have set this device up for us,
Dan
/--------------------------------\ /--------------------------------\ | Daniel Jacobowitz |__| SCS Class of 2002 | | Debian GNU/Linux Developer __ Carnegie Mellon University | | dan@debian.org | | dmj+@andrew.cmu.edu | \--------------------------------/ \--------------------------------/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/
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