1 /* 2 * Copyright 2018 Advanced Micro Devices, Inc. 3 * All Rights Reserved. 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining a 6 * copy of this software and associated documentation files (the 7 * "Software"), to deal in the Software without restriction, including 8 * without limitation the rights to use, copy, modify, merge, publish, 9 * distribute, sub license, and/or sell copies of the Software, and to 10 * permit persons to whom the Software is furnished to do so, subject to 11 * the following conditions: 12 * 13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 15 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 16 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, 17 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 18 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 19 * USE OR OTHER DEALINGS IN THE SOFTWARE. 20 * 21 * The above copyright notice and this permission notice (including the 22 * next paragraph) shall be included in all copies or substantial portions 23 * of the Software. 24 * 25 */ 26 #ifndef __AMDGPU_GMC_H__ 27 #define __AMDGPU_GMC_H__ 28 29 #include <linux/types.h> 30 31 #include "amdgpu_irq.h" 32 33 /* VA hole for 48bit addresses on Vega10 */ 34 #define AMDGPU_GMC_HOLE_START 0x0000800000000000ULL 35 #define AMDGPU_GMC_HOLE_END 0xffff800000000000ULL 36 37 /* 38 * Hardware is programmed as if the hole doesn't exists with start and end 39 * address values. 40 * 41 * This mask is used to remove the upper 16bits of the VA and so come up with 42 * the linear addr value. 43 */ 44 #define AMDGPU_GMC_HOLE_MASK 0x0000ffffffffffffULL 45 46 /* 47 * Ring size as power of two for the log of recent faults. 48 */ 49 #define AMDGPU_GMC_FAULT_RING_ORDER 8 50 #define AMDGPU_GMC_FAULT_RING_SIZE (1 << AMDGPU_GMC_FAULT_RING_ORDER) 51 52 /* 53 * Hash size as power of two for the log of recent faults 54 */ 55 #define AMDGPU_GMC_FAULT_HASH_ORDER 8 56 #define AMDGPU_GMC_FAULT_HASH_SIZE (1 << AMDGPU_GMC_FAULT_HASH_ORDER) 57 58 /* 59 * Number of IH timestamp ticks until a fault is considered handled 60 */ 61 #define AMDGPU_GMC_FAULT_TIMEOUT 5000ULL 62 63 struct firmware; 64 65 /* 66 * GMC page fault information 67 */ 68 struct amdgpu_gmc_fault { 69 uint64_t timestamp; 70 uint64_t next:AMDGPU_GMC_FAULT_RING_ORDER; 71 uint64_t key:52; 72 }; 73 74 /* 75 * VMHUB structures, functions & helpers 76 */ 77 struct amdgpu_vmhub { 78 uint32_t ctx0_ptb_addr_lo32; 79 uint32_t ctx0_ptb_addr_hi32; 80 uint32_t vm_inv_eng0_req; 81 uint32_t vm_inv_eng0_ack; 82 uint32_t vm_context0_cntl; 83 uint32_t vm_l2_pro_fault_status; 84 uint32_t vm_l2_pro_fault_cntl; 85 }; 86 87 /* 88 * GPU MC structures, functions & helpers 89 */ 90 struct amdgpu_gmc_funcs { 91 /* flush the vm tlb via mmio */ 92 void (*flush_gpu_tlb)(struct amdgpu_device *adev, 93 uint32_t vmid, uint32_t flush_type); 94 /* flush the vm tlb via ring */ 95 uint64_t (*emit_flush_gpu_tlb)(struct amdgpu_ring *ring, unsigned vmid, 96 uint64_t pd_addr); 97 /* Change the VMID -> PASID mapping */ 98 void (*emit_pasid_mapping)(struct amdgpu_ring *ring, unsigned vmid, 99 unsigned pasid); 100 /* enable/disable PRT support */ 101 void (*set_prt)(struct amdgpu_device *adev, bool enable); 102 /* set pte flags based per asic */ 103 uint64_t (*get_vm_pte_flags)(struct amdgpu_device *adev, 104 uint32_t flags); 105 /* get the pde for a given mc addr */ 106 void (*get_vm_pde)(struct amdgpu_device *adev, int level, 107 u64 *dst, u64 *flags); 108 }; 109 110 struct amdgpu_xgmi { 111 /* from psp */ 112 u64 node_id; 113 u64 hive_id; 114 /* fixed per family */ 115 u64 node_segment_size; 116 /* physical node (0-3) */ 117 unsigned physical_node_id; 118 /* number of nodes (0-4) */ 119 unsigned num_physical_nodes; 120 /* gpu list in the same hive */ 121 struct list_head head; 122 bool supported; 123 }; 124 125 struct amdgpu_gmc { 126 resource_size_t aper_size; 127 resource_size_t aper_base; 128 /* for some chips with <= 32MB we need to lie 129 * about vram size near mc fb location */ 130 u64 mc_vram_size; 131 u64 visible_vram_size; 132 u64 agp_size; 133 u64 agp_start; 134 u64 agp_end; 135 u64 gart_size; 136 u64 gart_start; 137 u64 gart_end; 138 u64 vram_start; 139 u64 vram_end; 140 /* FB region , it's same as local vram region in single GPU, in XGMI 141 * configuration, this region covers all GPUs in the same hive , 142 * each GPU in the hive has the same view of this FB region . 143 * GPU0's vram starts at offset (0 * segment size) , 144 * GPU1 starts at offset (1 * segment size), etc. 145 */ 146 u64 fb_start; 147 u64 fb_end; 148 unsigned vram_width; 149 u64 real_vram_size; 150 int vram_mtrr; 151 u64 mc_mask; 152 const struct firmware *fw; /* MC firmware */ 153 uint32_t fw_version; 154 struct amdgpu_irq_src vm_fault; 155 uint32_t vram_type; 156 uint32_t srbm_soft_reset; 157 bool prt_warning; 158 uint64_t stolen_size; 159 /* apertures */ 160 u64 shared_aperture_start; 161 u64 shared_aperture_end; 162 u64 private_aperture_start; 163 u64 private_aperture_end; 164 /* protects concurrent invalidation */ 165 spinlock_t invalidate_lock; 166 bool translate_further; 167 struct kfd_vm_fault_info *vm_fault_info; 168 atomic_t vm_fault_info_updated; 169 170 struct amdgpu_gmc_fault fault_ring[AMDGPU_GMC_FAULT_RING_SIZE]; 171 struct { 172 uint64_t idx:AMDGPU_GMC_FAULT_RING_ORDER; 173 } fault_hash[AMDGPU_GMC_FAULT_HASH_SIZE]; 174 uint64_t last_fault:AMDGPU_GMC_FAULT_RING_ORDER; 175 176 const struct amdgpu_gmc_funcs *gmc_funcs; 177 178 struct amdgpu_xgmi xgmi; 179 struct amdgpu_irq_src ecc_irq; 180 struct ras_common_if *ras_if; 181 }; 182 183 #define amdgpu_gmc_flush_gpu_tlb(adev, vmid, type) (adev)->gmc.gmc_funcs->flush_gpu_tlb((adev), (vmid), (type)) 184 #define amdgpu_gmc_emit_flush_gpu_tlb(r, vmid, addr) (r)->adev->gmc.gmc_funcs->emit_flush_gpu_tlb((r), (vmid), (addr)) 185 #define amdgpu_gmc_emit_pasid_mapping(r, vmid, pasid) (r)->adev->gmc.gmc_funcs->emit_pasid_mapping((r), (vmid), (pasid)) 186 #define amdgpu_gmc_get_vm_pde(adev, level, dst, flags) (adev)->gmc.gmc_funcs->get_vm_pde((adev), (level), (dst), (flags)) 187 #define amdgpu_gmc_get_pte_flags(adev, flags) (adev)->gmc.gmc_funcs->get_vm_pte_flags((adev),(flags)) 188 189 /** 190 * amdgpu_gmc_vram_full_visible - Check if full VRAM is visible through the BAR 191 * 192 * @adev: amdgpu_device pointer 193 * 194 * Returns: 195 * True if full VRAM is visible through the BAR 196 */ 197 static inline bool amdgpu_gmc_vram_full_visible(struct amdgpu_gmc *gmc) 198 { 199 WARN_ON(gmc->real_vram_size < gmc->visible_vram_size); 200 201 return (gmc->real_vram_size == gmc->visible_vram_size); 202 } 203 204 /** 205 * amdgpu_gmc_sign_extend - sign extend the given gmc address 206 * 207 * @addr: address to extend 208 */ 209 static inline uint64_t amdgpu_gmc_sign_extend(uint64_t addr) 210 { 211 if (addr >= AMDGPU_GMC_HOLE_START) 212 addr |= AMDGPU_GMC_HOLE_END; 213 214 return addr; 215 } 216 217 void amdgpu_gmc_get_pde_for_bo(struct amdgpu_bo *bo, int level, 218 uint64_t *addr, uint64_t *flags); 219 int amdgpu_gmc_set_pte_pde(struct amdgpu_device *adev, void *cpu_pt_addr, 220 uint32_t gpu_page_idx, uint64_t addr, 221 uint64_t flags); 222 uint64_t amdgpu_gmc_pd_addr(struct amdgpu_bo *bo); 223 uint64_t amdgpu_gmc_agp_addr(struct ttm_buffer_object *bo); 224 void amdgpu_gmc_vram_location(struct amdgpu_device *adev, struct amdgpu_gmc *mc, 225 u64 base); 226 void amdgpu_gmc_gart_location(struct amdgpu_device *adev, 227 struct amdgpu_gmc *mc); 228 void amdgpu_gmc_agp_location(struct amdgpu_device *adev, 229 struct amdgpu_gmc *mc); 230 bool amdgpu_gmc_filter_faults(struct amdgpu_device *adev, uint64_t addr, 231 uint16_t pasid, uint64_t timestamp); 232 233 #endif 234