From: Alex Buell <alex.buell@xxxxxxxxxxxxx> Date: Wed, 12 Jan 2011 23:43:02 +0000 > Jan 12 21:53:27 sodium pci@8,700000: PCI Error, primary error type[Master Abort] > Jan 12 21:53:27 sodium kernel: /pci@8,700pci@8,pci@8,700000: PCter Aborpci@8,700000: PCI Error, primary error type[Master Abort] > Jan 12 21:53:27 sodium kernel: /pci@8,700000: bytemask[0080] was_block(0) space(Memory) > Jan 12 21:53:27 sodium kernel: /pci@8,700000: PCI AFAR [00000000000a00a8] > Jan 12 21:53:27 sodium kernel: /pci@8,700000: PCI Secondary errors [(Master Abort)] > Jan 12 21:53:27 sodium kernel: /pci@8,700000: PCI Error, primary error type[Master Abort] The address we're using seems right, but for some reason the device is giving a master abort when we try to access the legacy VGA memory. I did a little bit of research, and there is a bit in the VGA I/O register set that needs to be set otherwise the VGA card will not respond to video memory accesses. Can you test to see if the following patch makes a difference? diff --git a/drivers/video/s3fb.c b/drivers/video/s3fb.c index 4b8f215..00152f6 100644 --- a/drivers/video/s3fb.c +++ b/drivers/video/s3fb.c @@ -1053,6 +1053,13 @@ static int __devinit s3_pci_probe(struct pci_dev *dev, const struct pci_device_i vga_wcrt(par->state.vgabase, 0x38, cr38); vga_wcrt(par->state.vgabase, 0x39, cr39); + /* Ensure that the card will respond to legacy VGA memory + * accesses. + */ + regval = vga_r(par->state.vgabase, VGA_MIS_R); + regval |= VGA_MIS_ENB_MEM_ACCESS; + vga_w(par->state.vgabase, VGA_MIS_W, regval); + strcpy(info->fix.id, s3_names [par->chip]); info->fix.mmio_start = 0; info->fix.mmio_len = 0; -- 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
