1 /* 2 * Copyright 2014 Advanced Micro Devices, Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 */ 23 24 #include "kfd_mqd_manager.h" 25 #include "amdgpu_amdkfd.h" 26 27 void mqd_symmetrically_map_cu_mask(struct mqd_manager *mm, 28 const uint32_t *cu_mask, uint32_t cu_mask_count, 29 uint32_t *se_mask) 30 { 31 struct kfd_cu_info cu_info; 32 uint32_t cu_per_sh[4] = {0}; 33 int i, se, cu = 0; 34 35 amdgpu_amdkfd_get_cu_info(mm->dev->kgd, &cu_info); 36 37 if (cu_mask_count > cu_info.cu_active_number) 38 cu_mask_count = cu_info.cu_active_number; 39 40 for (se = 0; se < cu_info.num_shader_engines; se++) 41 for (i = 0; i < 4; i++) 42 cu_per_sh[se] += hweight32(cu_info.cu_bitmap[se][i]); 43 44 /* Symmetrically map cu_mask to all SEs: 45 * cu_mask[0] bit0 -> se_mask[0] bit0; 46 * cu_mask[0] bit1 -> se_mask[1] bit0; 47 * ... (if # SE is 4) 48 * cu_mask[0] bit4 -> se_mask[0] bit1; 49 * ... 50 */ 51 se = 0; 52 for (i = 0; i < cu_mask_count; i++) { 53 if (cu_mask[i / 32] & (1 << (i % 32))) 54 se_mask[se] |= 1 << cu; 55 56 do { 57 se++; 58 if (se == cu_info.num_shader_engines) { 59 se = 0; 60 cu++; 61 } 62 } while (cu >= cu_per_sh[se] && cu < 32); 63 } 64 } 65