diff --git a/drivers/gpu/drm/i915/gvt/handlers.c b/drivers/gpu/drm/i915/gvt/handlers.c index 408600befc9f4af77c2d9e7ef66df39df83a173e..bb16ef5c85104d8c8aaa97fbdc9bbdbc74424f64 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 32cd64ddad2668ed88d707c68f856f4b968bb3c4..dbc04ad2c7a1e0703f56fc8dbc515fc22b792abd 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);