1 /* 2 * SPDX-FileCopyrightText: Copyright (c) 1993-2022 NVIDIA CORPORATION & AFFILIATES. All rights reserved. 3 * SPDX-License-Identifier: MIT 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining a 6 * copy of this software and associated documentation files (the "Software"), 7 * to deal in the Software without restriction, including without limitation 8 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 9 * and/or sell copies of the Software, and to permit persons to whom the 10 * Software is furnished to do so, subject to the following conditions: 11 * 12 * The above copyright notice and this permission notice shall be included in 13 * all copies or substantial portions of the Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 21 * DEALINGS IN THE SOFTWARE. 22 */ 23 24 #include "core/locks.h" 25 #include "gpu/ce/kernel_ce.h" 26 #include "gpu/ce/kernel_ce_private.h" 27 #include "gpu/subdevice/subdevice.h" 28 #include "gpu_mgr/gpu_mgr.h" 29 #include "vgpu/rpc.h" 30 31 // 32 // CE RM Device Controls 33 // 34 35 // 36 // NV2080_CTRL_CMD_CE_GET_CAPS passes userspace pointer for copyin/out. 37 // NV2080_CTRL_CMD_CE_GET_CAPS_V2 stores data inline. 38 // 39 40 // 41 // Lock Requirements: 42 // Assert that API lock held on entry 43 // 44 NV_STATUS 45 subdeviceCtrlCmdCeGetCaps_IMPL 46 ( 47 Subdevice *pSubdevice, 48 NV2080_CTRL_CE_GET_CAPS_PARAMS *pCeCapsParams 49 ) 50 { 51 OBJGPU *pGpu = GPU_RES_GET_GPU(pSubdevice); 52 KernelCE *pKCe; 53 NvU32 ceNumber; 54 NV_STATUS status = NV_OK; 55 RM_ENGINE_TYPE rmEngineType; 56 57 LOCK_ASSERT_AND_RETURN(rmapiLockIsOwner()); 58 59 // sanity check array size 60 if (pCeCapsParams->capsTblSize != NV2080_CTRL_CE_CAPS_TBL_SIZE) 61 { 62 NV_PRINTF(LEVEL_ERROR, "size mismatch: client 0x%x rm 0x%x\n", 63 pCeCapsParams->capsTblSize, NV2080_CTRL_CE_CAPS_TBL_SIZE); 64 return NV_ERR_INVALID_ARGUMENT; 65 } 66 67 rmEngineType = gpuGetRmEngineType(pCeCapsParams->ceEngineType); 68 69 if (!RM_ENGINE_TYPE_IS_COPY(rmEngineType)) 70 { 71 return NV_ERR_NOT_SUPPORTED; 72 } 73 74 // 75 // vGPU: 76 // 77 // Since vGPU does all real hardware management in the 78 // host, if we are in guest OS (where IS_VIRTUAL(pGpu) is true), 79 // do an RPC to the host to get blacklist information from host RM 80 // 81 if (IS_VIRTUAL(pGpu)) 82 { 83 CALL_CONTEXT *pCallContext = resservGetTlsCallContext(); 84 RmCtrlParams *pRmCtrlParams = pCallContext->pControlParams; 85 NV2080_CTRL_CE_GET_CAPS_V2_PARAMS ceCapsv2Params = { 0 }; 86 87 ceCapsv2Params.ceEngineType = pCeCapsParams->ceEngineType; 88 89 NV_RM_RPC_CONTROL(pGpu, pRmCtrlParams->hClient, 90 pRmCtrlParams->hObject, 91 NV2080_CTRL_CMD_CE_GET_CAPS_V2, 92 &ceCapsv2Params, 93 sizeof(ceCapsv2Params), 94 status); 95 96 if (status == NV_OK) 97 { 98 portMemCopy(NvP64_VALUE(pCeCapsParams->capsTbl), 99 (sizeof(NvU8) * NV2080_CTRL_CE_CAPS_TBL_SIZE), 100 ceCapsv2Params.capsTbl, 101 (sizeof(NvU8) * NV2080_CTRL_CE_CAPS_TBL_SIZE)); 102 } 103 return status; 104 } 105 106 NV_ASSERT_OK_OR_RETURN(ceIndexFromType(pGpu, RES_GET_CLIENT_HANDLE(pSubdevice), rmEngineType, &ceNumber)); 107 108 pKCe = GPU_GET_KCE(pGpu, ceNumber); 109 110 // Return an unsupported error for not present or stubbed CEs as they are 111 // not supposed to be user visible and cannot be allocated anyway. 112 if (!pKCe) 113 { 114 return NV_ERR_NOT_SUPPORTED; 115 } 116 117 // now fill in caps for this CE 118 return kceGetDeviceCaps(pGpu, pKCe, rmEngineType, NvP64_VALUE(pCeCapsParams->capsTbl)); 119 } 120