diff options
| author | Marcin Slusarz <marcin.slusarz@gmail.com> | 2010-05-16 15:27:03 (GMT) |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2010-05-18 06:19:27 (GMT) |
| commit | 1471ca9aa71cd37b6a7476bb6f06a3a8622ea1bd (patch) | |
| tree | 3bf5ef9fea79b0b92220cfcc3842db7afb5cd63d /drivers/video/fbmem.c | |
| parent | 3da1f33e79a5922c1a31077e7b33aba1cec19b94 (diff) | |
| download | linux-1471ca9aa71cd37b6a7476bb6f06a3a8622ea1bd.tar.xz | |
fbdev: allow passing more than one aperture for handoff
It removes a hack from nouveau code which had to detect which
region to pass to kick vesafb/efifb.
Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Cc: Eric Anholt <eric@anholt.net>
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Thomas Hellstrom <thellstrom@vmware.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Peter Jones <pjones@redhat.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/video/fbmem.c')
| -rw-r--r-- | drivers/video/fbmem.c | 29 |
1 files changed, 26 insertions, 3 deletions
diff --git a/drivers/video/fbmem.c b/drivers/video/fbmem.c index a15b44e..03f2dc2 100644 --- a/drivers/video/fbmem.c +++ b/drivers/video/fbmem.c @@ -1468,16 +1468,39 @@ static int fb_check_foreignness(struct fb_info *fi) return 0; } -static bool fb_do_apertures_overlap(struct fb_info *gen, struct fb_info *hw) +static bool apertures_overlap(struct aperture *gen, struct aperture *hw) { /* is the generic aperture base the same as the HW one */ - if (gen->aperture_base == hw->aperture_base) + if (gen->base == hw->base) return true; /* is the generic aperture base inside the hw base->hw base+size */ - if (gen->aperture_base > hw->aperture_base && gen->aperture_base <= hw->aperture_base + hw->aperture_size) + if (gen->base > hw->base && gen->base <= hw->base + hw->size) return true; return false; } + +static bool fb_do_apertures_overlap(struct fb_info *gen, struct fb_info *hw) +{ + int i, j; + struct apertures_struct *hwa = hw->apertures; + struct apertures_struct *gena = gen->apertures; + if (!hwa || !gena) + return false; + + for (i = 0; i < hwa->count; ++i) { + struct aperture *h = &hwa->ranges[i]; + for (j = 0; j < gena->count; ++j) { + struct aperture *g = &gena->ranges[j]; + printk(KERN_DEBUG "checking generic (%llx %llx) vs hw (%llx %llx)\n", + g->base, g->size, h->base, h->size); + if (apertures_overlap(g, h)) + return true; + } + } + + return false; +} + /** * register_framebuffer - registers a frame buffer device * @fb_info: frame buffer info structure |