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author | Zhi Wang <zhi.a.wang@intel.com> | 2016-06-16 08:07:00 -0400 |
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committer | Chris Wilson <chris@chris-wilson.co.uk> | 2016-06-17 20:35:06 +0100 |
commit | 0ad35fed618cec78af8f40cc47702e13e5ba82b1 (patch) | |
tree | 69ae9a6a4499e8baf4bc2d808a4a026f778e9cf0 /drivers/gpu/drm/i915/Kconfig | |
parent | b02d22a399963926618949f794e8a13aebb42898 (diff) | |
download | op-kernel-dev-0ad35fed618cec78af8f40cc47702e13e5ba82b1.zip op-kernel-dev-0ad35fed618cec78af8f40cc47702e13e5ba82b1.tar.gz |
drm/i915: gvt: Introduce the basic architecture of GVT-g
This patch introduces the very basic framework of GVT-g device model,
includes basic prototypes, definitions, initialization.
v12:
- Call intel_gvt_init() in driver early initialization stage. (Chris)
v8:
- Remove the GVT idr and mutex in intel_gvt_host. (Joonas)
v7:
- Refine the URL link in Kconfig. (Joonas)
- Refine the introduction of GVT-g host support in Kconfig. (Joonas)
- Remove the macro GVT_ALIGN(), use round_down() instead. (Joonas)
- Make "struct intel_gvt" a data member in struct drm_i915_private.(Joonas)
- Remove {alloc, free}_gvt_device()
- Rename intel_gvt_{create, destroy}_gvt_device()
- Expost intel_gvt_init_host()
- Remove the dummy "struct intel_gvt" declaration in intel_gvt.h (Joonas)
v6:
- Refine introduction in Kconfig. (Chris)
- The exposed API functions will take struct intel_gvt * instead of
void *. (Chris/Tvrtko)
- Remove most memebers of strct intel_gvt_device_info. Will add them
in the device model patches.(Chris)
- Remove gvt_info() and gvt_err() in debug.h. (Chris)
- Move GVT kernel parameter into i915_params. (Chris)
- Remove include/drm/i915_gvt.h, as GVT-g will be built within i915.
- Remove the redundant struct i915_gvt *, as the functions in i915
will directly take struct intel_gvt *.
- Add more comments for reviewer.
v5:
Take Tvrtko's comments:
- Fix the misspelled words in Kconfig
- Let functions take drm_i915_private * instead of struct drm_device *
- Remove redundant prints/local varible initialization
v3:
Take Joonas' comments:
- Change file name i915_gvt.* to intel_gvt.*
- Move GVT kernel parameter into intel_gvt.c
- Remove redundant debug macros
- Change error handling style
- Add introductions for some stub functions
- Introduce drm/i915_gvt.h.
Take Kevin's comments:
- Move GVT-g host/guest check into intel_vgt_balloon in i915_gem_gtt.c
v2:
- Introduce i915_gvt.c.
It's necessary to introduce the stubs between i915 driver and GVT-g host,
as GVT-g components is configurable in kernel config. When disabled, the
stubs here do nothing.
Take Joonas' comments:
- Replace boolean return value with int.
- Replace customized info/warn/debug macros with DRM macros.
- Document all non-static functions like i915.
- Remove empty and unused functions.
- Replace magic number with marcos.
- Set GVT-g in kernel config to "n" by default.
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Cc: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Zhi Wang <zhi.a.wang@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1466078825-6662-5-git-send-email-zhi.a.wang@intel.com
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'drivers/gpu/drm/i915/Kconfig')
-rw-r--r-- | drivers/gpu/drm/i915/Kconfig | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/Kconfig b/drivers/gpu/drm/i915/Kconfig index 29a32b1..7769e46 100644 --- a/drivers/gpu/drm/i915/Kconfig +++ b/drivers/gpu/drm/i915/Kconfig @@ -57,6 +57,28 @@ config DRM_I915_USERPTR If in doubt, say "Y". +config DRM_I915_GVT + bool "Enable Intel GVT-g graphics virtualization host support" + depends on DRM_I915 + default n + help + Choose this option if you want to enable Intel GVT-g graphics + virtualization technology host support with integrated graphics. + With GVT-g, it's possible to have one integrated graphics + device shared by multiple VMs under different hypervisors. + + Note that at least one hypervisor like Xen or KVM is required for + this driver to work, and it only supports newer device from + Broadwell+. For further information and setup guide, you can + visit: http://01.org/igvt-g. + + Now it's just a stub to support the modifications of i915 for + GVT device model. It requires at least one MPT modules for Xen/KVM + and other components of GVT device model to work. Use it under + you own risk. + + If in doubt, say "N". + menu "drm/i915 Debugging" depends on DRM_I915 depends on EXPERT |