1 // SPDX-License-Identifier: MIT 2 /* 3 * Copyright © 2022 Intel Corporation 4 */ 5 6 #include "xe_guc_hwconfig.h" 7 8 #include <drm/drm_managed.h> 9 10 #include "abi/guc_actions_abi.h" 11 #include "xe_bo.h" 12 #include "xe_device.h" 13 #include "xe_gt.h" 14 #include "xe_guc.h" 15 #include "xe_map.h" 16 17 static int send_get_hwconfig(struct xe_guc *guc, u32 ggtt_addr, u32 size) 18 { 19 u32 action[] = { 20 XE_GUC_ACTION_GET_HWCONFIG, 21 lower_32_bits(ggtt_addr), 22 upper_32_bits(ggtt_addr), 23 size, 24 }; 25 26 return xe_guc_mmio_send(guc, action, ARRAY_SIZE(action)); 27 } 28 29 static int guc_hwconfig_size(struct xe_guc *guc, u32 *size) 30 { 31 int ret = send_get_hwconfig(guc, 0, 0); 32 33 if (ret < 0) 34 return ret; 35 36 *size = ret; 37 return 0; 38 } 39 40 static int guc_hwconfig_copy(struct xe_guc *guc) 41 { 42 int ret = send_get_hwconfig(guc, xe_bo_ggtt_addr(guc->hwconfig.bo), 43 guc->hwconfig.size); 44 45 if (ret < 0) 46 return ret; 47 48 return 0; 49 } 50 51 int xe_guc_hwconfig_init(struct xe_guc *guc) 52 { 53 struct xe_device *xe = guc_to_xe(guc); 54 struct xe_gt *gt = guc_to_gt(guc); 55 struct xe_tile *tile = gt_to_tile(gt); 56 struct xe_bo *bo; 57 u32 size; 58 int err; 59 60 /* Initialization already done */ 61 if (guc->hwconfig.bo) 62 return 0; 63 64 /* 65 * All hwconfig the same across GTs so only GT0 needs to be configured 66 */ 67 if (gt->info.id != XE_GT0) 68 return 0; 69 70 /* ADL_P, DG2+ supports hwconfig table */ 71 if (GRAPHICS_VERx100(xe) < 1255 && xe->info.platform != XE_ALDERLAKE_P) 72 return 0; 73 74 err = guc_hwconfig_size(guc, &size); 75 if (err) 76 return err; 77 if (!size) 78 return -EINVAL; 79 80 bo = xe_managed_bo_create_pin_map(xe, tile, PAGE_ALIGN(size), 81 XE_BO_CREATE_SYSTEM_BIT | 82 XE_BO_CREATE_GGTT_BIT); 83 if (IS_ERR(bo)) 84 return PTR_ERR(bo); 85 guc->hwconfig.bo = bo; 86 guc->hwconfig.size = size; 87 88 return guc_hwconfig_copy(guc); 89 } 90 91 u32 xe_guc_hwconfig_size(struct xe_guc *guc) 92 { 93 return !guc->hwconfig.bo ? 0 : guc->hwconfig.size; 94 } 95 96 void xe_guc_hwconfig_copy(struct xe_guc *guc, void *dst) 97 { 98 struct xe_device *xe = guc_to_xe(guc); 99 100 XE_WARN_ON(!guc->hwconfig.bo); 101 102 xe_map_memcpy_from(xe, dst, &guc->hwconfig.bo->vmap, 0, 103 guc->hwconfig.size); 104 } 105