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| author | Zhi Wang <zhi.a.wang@intel.com> | 2015-09-17 09:22:08 +0800 |
|---|---|---|
| committer | Zhenyu Wang <zhenyuw@linux.intel.com> | 2016-10-14 18:12:22 +0800 |
| commit | c8fe6a6811a7186656379d0c27e85325a966077a (patch) | |
| tree | ee8294cf5ff5d49dcc95d868b1b6d75f7d08c323 /drivers/gpu/drm/drm_vm.c | |
| parent | 3f728236c5166052f88474412059cc63540cd27a (diff) | |
drm/i915/gvt: vGPU interrupt virtualization.
This patch introduces vGPU interrupt emulation framework.
The vGPU intrerrupt emulation framework is an event-based interrupt
emulation framework. It's responsible for emulating GEN hardware interrupts
during emulating other HW behaviour.
It consists several components:
- Descriptions of interrupt register bit
- Upper level <-> lower level interrupt mapping
- GEN HW IER/IMR/IIR register emulation routines
- Event-based interrupt propagation interface
When a GVT-g component wants to inject an interrupt to a VM during a
emulation, first it should specify the event needs to be emulated and the
framework will deal with the rest of emulation:
- Generating related virtual IIR bit according to virtual IER and IMRs,
- Generate related virtual upper level virtual IIR bit accodring to the
per-platform interrupt mapping
- Injecting a MSI to VM
Signed-off-by: Zhi Wang <zhi.a.wang@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Diffstat (limited to 'drivers/gpu/drm/drm_vm.c')
0 files changed, 0 insertions, 0 deletions