Another attempt at figuring out stolen memory for gen2. This time instead
of trusting the GTT base address, I used the same method the BIOS uses.
(TOM-TSEG_SIZE-stolen_size). Except on 865G where things are more complicated.
Fortunately it seems to have a simlple answer for us in the for om the TOUD
register.
So far this has only been tested on my 855 laptop with 512MB memory.
Ville Syrjälä (6):
x86: Add vfunc for Intel graphics stolen memory base address
x86: Add Intel graphics stolen memory quirk for gen2 platforms
x86: Print the Intel graphcis stolen memory range
intel-gtt: Report stolen_size as 0 when local memory is present
drm/i915: Don't clobber the GTT when it's within stolen memory
drm/i915: Determine the stolen memory base address on gen2
arch/x86/kernel/early-quirks.c | 218 ++++++++++++++++++++++++++++-----
drivers/char/agp/intel-gtt.c | 7 ++
drivers/gpu/drm/i915/i915_gem_stolen.c | 108 ++++++++++++++--
drivers/gpu/drm/i915/i915_reg.h | 2 +
include/drm/i915_drm.h | 18 +++
5 files changed, 313 insertions(+), 40 deletions(-)
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