/* * Copyright(c) 2011-2016 Intel Corporation. All rights reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. * * Authors: * Kevin Tian <kevin.tian@intel.com> * Dexuan Cui * * Contributors: * Pei Zhang <pei.zhang@intel.com> * Min He <min.he@intel.com> * Niu Bing <bing.niu@intel.com> * Yulei Zhang <yulei.zhang@intel.com> * Zhenyu Wang <zhenyuw@linux.intel.com> * Zhi Wang <zhi.a.wang@intel.com> *
*/
/** * intel_vgpu_write_fence - write fence registers owned by a vGPU * @vgpu: vGPU instance * @fence: vGPU fence register number * @value: Fence register value to be written * * This function is used to write fence registers owned by a vGPU. The vGPU * fence register number will be translated into HW fence register number. *
*/ void intel_vgpu_write_fence(struct intel_vgpu *vgpu,
u32 fence, u64 value)
{ struct intel_gvt *gvt = vgpu->gvt; struct drm_i915_private *i915 = gvt->gt->i915; struct intel_uncore *uncore = gvt->gt->uncore; struct i915_fence_reg *reg;
i915_reg_t fence_reg_lo, fence_reg_hi;
assert_rpm_wakelock_held(uncore->rpm);
if (drm_WARN_ON(&i915->drm, fence >= vgpu_fence_sz(vgpu))) return;
reg = vgpu->fence.regs[fence]; if (drm_WARN_ON(&i915->drm, !reg)) return;
no_enough_resource:
gvt_err("fail to allocate resource %s\n", item);
gvt_err("request %luMB avail %luMB max %luMB taken %luMB\n",
BYTES_TO_MB(request), BYTES_TO_MB(avail),
BYTES_TO_MB(max), BYTES_TO_MB(taken)); return -ENOSPC;
}
/** * intel_vgpu_free_resource() - free HW resource owned by a vGPU * @vgpu: a vGPU * * This function is used to free the HW resource owned by a vGPU. *
*/ void intel_vgpu_free_resource(struct intel_vgpu *vgpu)
{
free_vgpu_gm(vgpu);
free_vgpu_fence(vgpu);
free_resource(vgpu);
}
/** * intel_vgpu_reset_resource - reset resource state owned by a vGPU * @vgpu: a vGPU * * This function is used to reset resource state owned by a vGPU. *
*/ void intel_vgpu_reset_resource(struct intel_vgpu *vgpu)
{ struct intel_gvt *gvt = vgpu->gvt;
intel_wakeref_t wakeref;
/** * intel_vgpu_alloc_resource() - allocate HW resource for a vGPU * @vgpu: vGPU * @conf: vGPU creation params * * This function is used to allocate HW resource for a vGPU. User specifies * the resource configuration through the creation params. * * Returns: * zero on success, negative error code if failed. *
*/ int intel_vgpu_alloc_resource(struct intel_vgpu *vgpu, conststruct intel_vgpu_config *conf)
{ int ret;
ret = alloc_resource(vgpu, conf); if (ret) return ret;
ret = alloc_vgpu_gm(vgpu); if (ret) goto out_free_resource;
ret = alloc_vgpu_fence(vgpu); if (ret) goto out_free_vgpu_gm;
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