Messages in this thread |  | | Date | Thu, 08 Feb 2001 12:15:00 -0500 | From | Alex Deucher <> | Subject | Re: 2.4.x, drm, g400 and pci_set_master |
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I wasn't talking about the drm driver I was talking about programming the PCI controller directly using setpci 1.0.0 .... or some such command, I can't remember off hand. Which turns on busmastering if it is off for a particular device.
Alex
Jeff Hartmann wrote: > > Alex Deucher wrote: > > > I'm not sure about the mga source, but you can enable busmaster manually > > as root. See the dri-devel list for more. I can't remember the exact > > message off hand. THere was also some discussion of this last week I > > think. > > > > Alex > > > > > > ---------------------------- > > > > Hi, > > friend of mine bought g400 on my recommendation, and unfortunately, > > mga drm driver did not worked for me. I tracked it down to missing > > pci_enable_device and pci_set_master in mga* driver. But even after > > looking more than hour into that code I have no idea where I should > > place this call, as it looks like that mga driver is completely > > shielded from seeing pcidev structure :-( > > Does anybody know where I should place pci_enable_device and > > pci_set_master into mga code? I worked around pci_enable_device by > > using matroxfb, but pci_set_master is not invoked by matroxfb, and > > adding this call into matroxfb just to get mga drm driver to work does > > not look correctly to me - although it is what I had done just now. > > Thanks, > > Petr Vandrovec > > vandrove@vc.cvut.cz > > - > > 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/ > > > > The DRM drivers don't know about the pcidev structure at all. All this > is done in the XFree86 ddx driver. You can probably add something like > this to MGAPreInit (after pMga->PciTag is set, in my copy its > mga_driver.c:1232 yours might be at a slightly different line number > depending on the version your using): > > { > CARD32 temp; > temp = pciReadLong(pMga->PciTag, PCI_CMD_STAT_REG); > pciWriteLong(pMga->PciTag, PCI_CMD_STAT_REG, temp | > PCI_CMD_MASTER_ENABLE); > } > > -Jeff - 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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