diff options
author | Keith Packard <keithp@keithp.com> | 2008-07-31 15:48:07 +1000 |
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committer | Dave Airlie <airlied@redhat.com> | 2008-08-12 10:13:38 +1000 |
commit | a8c84df9f71e4a7b14bdd41687a70d366c087eef (patch) | |
tree | fc11f372de1543c6816d783ee8a852fcecf434d7 /drivers/char/sonypi.c | |
parent | e3cf69511a2c5369c58f6fd6a065de152c3d4b22 (diff) |
intel/agp: rewrite GTT on resume
On my Intel chipset (965GM), the GTT is entirely erased across
suspend/resume. This patch simply re-plays the current mapping at resume
time to restore the table.=20
I noticed this once I started relying on persistent GTT mappings across VT
switch in our GEM work -- the old X server and DRM code carefully unbind
all memory from the GTT on VT switch, but GEM does not bother.
I placed the list management and rewrite code in the generic layer on the
assumption that it will be needed on other hardware, but I did not add the
rewrite call to anything other than the Intel resume function.
Keep a list of current GATT mappings. At resume time, rewrite them into
the GATT. This is needed on Intel (at least) as the entire GATT is
cleared across suspend/resume.
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Keith Packard <keithp@keithp.com>
Cc: Dave Jones <davej@codemonkey.org.uk>
Cc: Andi Kleen <andi@firstfloor.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/char/sonypi.c')
0 files changed, 0 insertions, 0 deletions