On Wed, 2011-01-05 at 21:13 +0000, Alex Buell wrote: > > 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! After doing as you suggested: printk(KERN_INFO "s3fb: vga io base = 0x%p\n", par->vga_iobase); /* Unlock regs */ cr38 = vga_rcrt(par->vga_iobase, 0x38); cr39 = vga_rcrt(par->vga_iobase, 0x39); vga_wseq(par->vga_iobase, 0x08, 0x06); vga_wcrt(par->vga_iobase, 0x38, 0x48); vga_wcrt(par->vga_iobase, 0x39, 0xA5); printk(KERN_INFO "s3fb ok...\n"); The above code seems to work, and crashes after this point: /* Identify chip type */ par->chip = id->driver_data & CHIP_MASK; par->rev = vga_rcrt(par->vga_iobase, 0x2f); if (par->chip & CHIP_UNDECIDED_FLAG) par->chip = s3_identification(par->chip); The logs shows: Jan 5 23:16:29 sodium kernel: s3fb: vga io base = 0x000007ffef000000 Jan 5 23:16:29 sodium kernel: s3fb ok... Jan 5 23:16:29 sodium kernel: ERROR(0): Cheetah error trap taken afsr[0030100000000000] afar[00000000000003d0] TL1(0) Jan 5 23:16:29 sodium kernel: ERROR(0): TPC[10583b54] TNPC[10583b58] O7[10583a3c] TSTATE[9911001606] Jan 5 23:16:29 sodium kernel: ERROR(0): TPC<s3_pci_probe+0x410/0x93c [s3fb]> Jan 5 23:16:29 sodium kernel: ERROR(0): M_SYND(0), E_SYND(0), Multiple Errors, Privileged Jan 5 23:16:29 sodium kernel: ERROR(0): Highest priority error (0000100000000000) "Unmapped error from system bus" Jan 5 23:16:29 sodium kernel: ERROR(0): D-cache idx[0] tag[0000000000000000] utag[0000000000000000] stag[0000000000000000] Jan 5 23:16:29 sodium kernel: ERROR(0): D-cache data0[0000000000000000] data1[0000000000000000] data2[0000000000000000] data3[0000000000000000] Jan 5 23:16:29 sodium kernel: ERROR(0): I-cache idx[0] tag[0000000000000000] utag[0000000000000000] stag[0000000000000000] u[0000000000000000] l[0000000000000000] Jan 5 23:16:29 sodium kernel: ERROR(0): I-cache INSN0[0000000000000000] INSN1[0000000000000000] INSN2[0000000000000000] INSN3[0000000000000000] Jan 5 23:16:29 sodium kernel: ERROR(0): I-cache INSN4[0000000000000000] INSN5[0000000000000000] INSN6[0000000000000000] INSN7[0000000000000000] Jan 5 23:16:29 sodium kernel: ERROR(0): E-cache idx[3c0] tag[0000000002249249] Jan 5 23:16:29 sodium kernel: ERROR(0): E-cache data0[787072745f756e72] data1[656769737465725f] data2[7472616e73706f72] data3[7400787072745f72] Jan 5 23:16:29 sodium kernel: Kernel panic - not syncing: Irrecoverable deferred error trap. I'm still thinking that it probably isn't the right io_base if it's crashing trying to identify the s3 chipset. -- Tactical Nuclear Kittens -- To unsubscribe from this list: send the line "unsubscribe linux-fbdev" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html