[PATCH 00/23] intel gtt rework, part 1: initialization

[Daniel Vetter <daniel.vetter@ffwll.ch>]

Hi all,

The goal of this rework is to
a) separate the fake agp driver from the hw access and
b) dig a direct path from gem to the intel gtt code
with the long-term goal to get rid of the fake agp driver for kms.

This series does this for the gtt setup code - except for the pte clearing
with the scratch page on initialization and pte restoring on resume, that
needs further work, first.

Patch series continuously tested on my ilk, i945gm and i855gm while
developing. IMHO the part most likely to suffer a regression is the
g33/pineview gtt size detection code.

Future patch series still to come like I'm currently planning them:
0. Deprecated the agp ioctls for kms. IIRC only xvmc on i915 ever used them
   (together with pin/unpin, which can go, too) and I've fixed that for
   intel 2.11 (2010Q1 release). So I think we can drop this in 2011Q1
   without hurting anyone.
1. Abstract away the pte handling/memory mapping. The intel fake agp drivers is
   the only user of quite a few generic agp helper things (dma remapping and
   the memory mask stuff, mostly). So this has the potential to be rather messy.
2. Wire the new pte handling directly to i915 and move the high-level stuff
   into the gem code. Sandybridge seems to have some new requirements here, can
   someone please shed some light on this? Zhenyu Wang?
[3. Port my duct-tapish i8xx cache coherency stuff over to the new framework.]
After 2011Q1: Kill the fake agp driver for kms-only chips (ilk and newer).
Perhaps even separate out the non-gem ums driver and get rid of the fake agp
driver for kms completely somewhen later.

Comments, flames, ideas highly welcome.

Yours, Daniel

daniel Vetter (23):
  agp/intel: split out gmch/gtt probe, part 2
  agp/intel: make intel-gtt.c into a real source file
  intel-gtt: introduce drm/intel-gtt.h
  intel-gtt: store a local pointer to the bridge pci dev
  intel-gtt: s/intel_i830_init_gtt_entries/intel_gtt_stolen_entries
  intel-gtt: new function intel_gtt_mappable_entries
  intel-gtt: generic intel_fake_agp_fetch_size
  intel-gtt: sane variable names for intel_gtt_stolen_entries
  intel-gtt: drop unnecessary conditions in intel_gtt_stolen_entries
  intel-gtt: adjust overhead entries in intel_gtt_stolen_entries
  intel-gtt: s/i8[13]0/fake_agp for generic functions
  intel-gtt: fix gtt_total_entries detection
  intel-gtt: introduce intel_gtt_driver
  intel-gtt: i915: use detected gtt size for mapping
  intel-gtt: i965: use detected gtt size for mapping
  intel-gtt: i830: adjust ioremap of regs and gtt to i9xx
  intel-gtt: consolidate the gtt ioremap calls
  intel-gtt: consolidate i830 setup
  intel-gtt: consolidate i9xx setup
  intel-gtt: call init_gtt_init in probe function
  intel-gtt: use chipset generation number some more
  drm/i915: drop prealloc_start from i915_dma gtt init
  drm/i915: die, i915_probe_agp, die

 drivers/char/agp/Makefile       |    1 +
 drivers/char/agp/intel-agp.c    |  189 +------
 drivers/char/agp/intel-agp.h    |   41 +--
 drivers/char/agp/intel-gtt.c    | 1067 +++++++++++++++++++++------------------
 drivers/gpu/drm/i915/i915_dma.c |  197 +-------
 drivers/gpu/drm/i915/i915_drv.h |    8 +-
 include/drm/intel-gtt.h         |   20 +
 7 files changed, 634 insertions(+), 889 deletions(-)
 create mode 100644 include/drm/intel-gtt.h

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1.7.2.2