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| author | Zhi Wang | 2017-09-30 11:42:20 +0200 |
|---|---|---|
| committer | Zhenyu Wang | 2017-11-16 04:48:22 +0100 |
| commit | 62a6a53786fc4b4e7543cc63b704dbb3f7df4c0f (patch) | |
| tree | b8352ef1a8628a16cf283cc02335d6a420056c05 | |
| parent | drm/i915/gvt: Factor intel_vgpu_page_track (diff) | |
| download | kernel-qcow2-linux-62a6a53786fc4b4e7543cc63b704dbb3f7df4c0f.tar.gz kernel-qcow2-linux-62a6a53786fc4b4e7543cc63b704dbb3f7df4c0f.tar.xz kernel-qcow2-linux-62a6a53786fc4b4e7543cc63b704dbb3f7df4c0f.zip | |
drm/i915/gvt: Export intel_gvt_render_mmio_to_ring_id()
Since many emulation logic needs to convert the offset of ring registers
into ring id, we export it for other caller which might need it.
Signed-off-by: Zhi Wang <zhi.a.wang@intel.com>
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/handlers.c | 21 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/mmio.h | 2 |
2 files changed, 17 insertions, 6 deletions
diff --git a/drivers/gpu/drm/i915/gvt/handlers.c b/drivers/gpu/drm/i915/gvt/handlers.c index 408600befc9f..bb16ef5c8510 100644 --- a/drivers/gpu/drm/i915/gvt/handlers.c +++ b/drivers/gpu/drm/i915/gvt/handlers.c @@ -137,17 +137,26 @@ static int new_mmio_info(struct intel_gvt *gvt, return 0; } -static int render_mmio_to_ring_id(struct intel_gvt *gvt, unsigned int reg) +/** + * intel_gvt_render_mmio_to_ring_id - convert a mmio offset into ring id + * @gvt: a GVT device + * @offset: register offset + * + * Returns: + * Ring ID on success, negative error code if failed. + */ +int intel_gvt_render_mmio_to_ring_id(struct intel_gvt *gvt, + unsigned int offset) { enum intel_engine_id id; struct intel_engine_cs *engine; - reg &= ~GENMASK(11, 0); + offset &= ~GENMASK(11, 0); for_each_engine(engine, gvt->dev_priv, id) { - if (engine->mmio_base == reg) + if (engine->mmio_base == offset) return id; } - return -1; + return -ENODEV; } #define offset_to_fence_num(offset) \ @@ -1445,7 +1454,7 @@ static int mmio_read_from_hw(struct intel_vgpu *vgpu, static int elsp_mmio_write(struct intel_vgpu *vgpu, unsigned int offset, void *p_data, unsigned int bytes) { - int ring_id = render_mmio_to_ring_id(vgpu->gvt, offset); + int ring_id = intel_gvt_render_mmio_to_ring_id(vgpu->gvt, offset); struct intel_vgpu_execlist *execlist; u32 data = *(u32 *)p_data; int ret = 0; @@ -1473,7 +1482,7 @@ static int ring_mode_mmio_write(struct intel_vgpu *vgpu, unsigned int offset, { struct intel_vgpu_submission *s = &vgpu->submission; u32 data = *(u32 *)p_data; - int ring_id = render_mmio_to_ring_id(vgpu->gvt, offset); + int ring_id = intel_gvt_render_mmio_to_ring_id(vgpu->gvt, offset); bool enable_execlist; int ret; diff --git a/drivers/gpu/drm/i915/gvt/mmio.h b/drivers/gpu/drm/i915/gvt/mmio.h index 32cd64ddad26..dbc04ad2c7a1 100644 --- a/drivers/gpu/drm/i915/gvt/mmio.h +++ b/drivers/gpu/drm/i915/gvt/mmio.h @@ -65,6 +65,8 @@ struct intel_gvt_mmio_info { struct hlist_node node; }; +int intel_gvt_render_mmio_to_ring_id(struct intel_gvt *gvt, + unsigned int reg); unsigned long intel_gvt_get_device_type(struct intel_gvt *gvt); bool intel_gvt_match_device(struct intel_gvt *gvt, unsigned long device); |