On Fri, Jun 14, 2013 at 12:11 AM, Helge Deller <deller@xxxxxx> wrote:
> From: Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>
>
> The LMMIO length reported by PAT and the length given by the LBA MASK
> register are not consistent. This leads e.g. to a non-working ATI FireGL
> card with the radeon DRM driver since the memory can't be mapped.
>
> Fix this by correctly adjusting the resource sizes.
>
> Signed-off-by: Helge Deller <deller@xxxxxx>
>
> diff --git a/drivers/parisc/lba_pci.c b/drivers/parisc/lba_pci.c
> index 1f05913..7dc0e40 100644
> --- a/drivers/parisc/lba_pci.c
> +++ b/drivers/parisc/lba_pci.c
> @@ -994,6 +994,15 @@ lba_pat_resources(struct parisc_device *pa_dev, struct lba_device *lba_dev)
> case PAT_LMMIO:
> /* used to fix up pre-initialized MEM BARs */
> if (!lba_dev->hba.lmmio_space.flags) {
> + unsigned long lba_len;
> + lba_len = ~READ_REG32(lba_dev->hba.base_addr
> + + LBA_LMMIO_MASK);
> + if ((p->end - p->start) != lba_len) {
> + pr_warn("PCI%02x LMMIO mismatch between PAT length (0x%lx) and MASK register (0x%lx), fixing.\n",
> + (int)lba_dev->hba.bus_num.start,
> + p->end - p->start, lba_len);
> + p->end = p->start + lba_len;
> + }
> sprintf(lba_dev->hba.lmmio_name,
> "PCI%02x LMMIO",
> (int)lba_dev->hba.bus_num.start);
> --
With these two patches, does kernel modesetting (and X11?) work?
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