Messages in this thread | | | Subject | Re: Using s3virge card in Sun Blade 2000 | From | Alex Buell <> | Date | Wed, 05 Jan 2011 21:13:42 +0000 |
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On Wed, 2011-01-05 at 11:07 -0800, David Miller wrote: > > Those are 32 bit addresses, so I suppose I should be getting the > base > > address for the registers accesses from region 1, right? > > Actually, I take back what I said earlier. Region 1 is a Memory > region not an I/O region. > > It looks like you'll have to find a way to get at the implicit > I/O space for the PCI domain this framebuffer is behind and > construct the implicit VGA addresses by hand. > > There is a way to do this, via pcibios_bus_to_resource(). You could > do something like: > > struct s3fb_info { > ... > void __iomem *vga_iobase; > ... > static int __devinit s3_pci_probe(struct pci_dev *dev, const struct > pci_device_id *id) > { > struct pci_bus_region bus_reg; > struct resource vga_res; > ... > bus_reg.start = 0; > bus_reg.end = 64 * 1024; > > vga_res.flags = IORESOURCE_IO; > > pcibios_bus_to_resource(dev, &bus_reg, &vga_res); > > par->vga_iobase = (void __iomem *) vga_res.start; > > Then replace all NULL vga_*() initial arguments in the driver > with par->vga_iobase.
No wonder it was crashing, there was nothing to access with region 1! I will do as you suggest, and see if it works. Thank you! -- Tactical Nuclear Kittens
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