2 * Copyright 2018 Advanced Micro Devices, Inc.
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
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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:
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
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21 * The above copyright notice and this permission notice (including the
22 * next paragraph) shall be included in all copies or substantial portions
26 #ifndef __AMDGPU_GMC_H__
27 #define __AMDGPU_GMC_H__
29 #include <linux/types.h>
31 #include "amdgpu_irq.h"
32 #include "amdgpu_ras.h"
34 /* VA hole for 48bit addresses on Vega10 */
35 #define AMDGPU_GMC_HOLE_START 0x0000800000000000ULL
36 #define AMDGPU_GMC_HOLE_END 0xffff800000000000ULL
39 * Hardware is programmed as if the hole doesn't exists with start and end
42 * This mask is used to remove the upper 16bits of the VA and so come up with
43 * the linear addr value.
45 #define AMDGPU_GMC_HOLE_MASK 0x0000ffffffffffffULL
48 * Ring size as power of two for the log of recent faults.
50 #define AMDGPU_GMC_FAULT_RING_ORDER 8
51 #define AMDGPU_GMC_FAULT_RING_SIZE (1 << AMDGPU_GMC_FAULT_RING_ORDER)
54 * Hash size as power of two for the log of recent faults
56 #define AMDGPU_GMC_FAULT_HASH_ORDER 8
57 #define AMDGPU_GMC_FAULT_HASH_SIZE (1 << AMDGPU_GMC_FAULT_HASH_ORDER)
60 * Number of IH timestamp ticks until a fault is considered handled
62 #define AMDGPU_GMC_FAULT_TIMEOUT 5000ULL
67 * GMC page fault information
69 struct amdgpu_gmc_fault {
70 uint64_t timestamp:48;
71 uint64_t next:AMDGPU_GMC_FAULT_RING_ORDER;
73 uint64_t timestamp_expiry:48;
77 * VMHUB structures, functions & helpers
79 struct amdgpu_vmhub_funcs {
80 void (*print_l2_protection_fault_status)(struct amdgpu_device *adev,
82 uint32_t (*get_invalidate_req)(unsigned int vmid, uint32_t flush_type);
86 uint32_t ctx0_ptb_addr_lo32;
87 uint32_t ctx0_ptb_addr_hi32;
88 uint32_t vm_inv_eng0_sem;
89 uint32_t vm_inv_eng0_req;
90 uint32_t vm_inv_eng0_ack;
91 uint32_t vm_context0_cntl;
92 uint32_t vm_l2_pro_fault_status;
93 uint32_t vm_l2_pro_fault_cntl;
96 * store the register distances between two continuous context domain
97 * and invalidation engine.
99 uint32_t ctx_distance;
100 uint32_t ctx_addr_distance; /* include LO32/HI32 */
101 uint32_t eng_distance;
102 uint32_t eng_addr_distance; /* include LO32/HI32 */
104 uint32_t vm_cntx_cntl;
105 uint32_t vm_cntx_cntl_vm_fault;
106 uint32_t vm_l2_bank_select_reserved_cid2;
108 uint32_t vm_contexts_disable;
110 const struct amdgpu_vmhub_funcs *vmhub_funcs;
114 * GPU MC structures, functions & helpers
116 struct amdgpu_gmc_funcs {
117 /* flush the vm tlb via mmio */
118 void (*flush_gpu_tlb)(struct amdgpu_device *adev, uint32_t vmid,
119 uint32_t vmhub, uint32_t flush_type);
120 /* flush the vm tlb via pasid */
121 int (*flush_gpu_tlb_pasid)(struct amdgpu_device *adev, uint16_t pasid,
122 uint32_t flush_type, bool all_hub,
124 /* flush the vm tlb via ring */
125 uint64_t (*emit_flush_gpu_tlb)(struct amdgpu_ring *ring, unsigned vmid,
127 /* Change the VMID -> PASID mapping */
128 void (*emit_pasid_mapping)(struct amdgpu_ring *ring, unsigned vmid,
130 /* enable/disable PRT support */
131 void (*set_prt)(struct amdgpu_device *adev, bool enable);
132 /* map mtype to hardware flags */
133 uint64_t (*map_mtype)(struct amdgpu_device *adev, uint32_t flags);
134 /* get the pde for a given mc addr */
135 void (*get_vm_pde)(struct amdgpu_device *adev, int level,
136 u64 *dst, u64 *flags);
137 /* get the pte flags to use for a BO VA mapping */
138 void (*get_vm_pte)(struct amdgpu_device *adev,
139 struct amdgpu_bo_va_mapping *mapping,
141 /* get the amount of memory used by the vbios for pre-OS console */
142 unsigned int (*get_vbios_fb_size)(struct amdgpu_device *adev);
145 struct amdgpu_xgmi_ras {
146 struct amdgpu_ras_block_object ras_block;
153 /* fixed per family */
154 u64 node_segment_size;
155 /* physical node (0-3) */
156 unsigned physical_node_id;
157 /* number of nodes (0-4) */
158 unsigned num_physical_nodes;
159 /* gpu list in the same hive */
160 struct list_head head;
162 struct ras_common_if *ras_if;
163 bool connected_to_cpu;
165 struct amdgpu_xgmi_ras *ras;
169 /* FB's physical address in MMIO space (for CPU to
170 * map FB). This is different compared to the agp/
171 * gart/vram_start/end field as the later is from
172 * GPU's view and aper_base is from CPU's view.
174 resource_size_t aper_size;
175 resource_size_t aper_base;
176 /* for some chips with <= 32MB we need to lie
177 * about vram size near mc fb location */
179 u64 visible_vram_size;
180 /* AGP aperture start and end in MC address space
181 * Driver find a hole in the MC address space
182 * to place AGP by setting MC_VM_AGP_BOT/TOP registers
183 * Under VMID0, logical address == MC address. AGP
184 * aperture maps to physical bus or IOVA addressed.
185 * AGP aperture is used to simulate FB in ZFB case.
186 * AGP aperture is also used for page table in system
187 * memory (mainly for APU).
193 /* GART aperture start and end in MC address space
194 * Driver find a hole in the MC address space
195 * to place GART by setting VM_CONTEXT0_PAGE_TABLE_START/END_ADDR
197 * Under VMID0, logical address inside GART aperture will
198 * be translated through gpuvm gart page table to access
199 * paged system memory
204 /* Frame buffer aperture of this GPU device. Different from
205 * fb_start (see below), this only covers the local GPU device.
206 * If driver uses FB aperture to access FB, driver get fb_start from
207 * MC_VM_FB_LOCATION_BASE (set by vbios) and calculate vram_start
208 * of this local device by adding an offset inside the XGMI hive.
209 * If driver uses GART table for VMID0 FB access, driver finds a hole in
210 * VMID0's virtual address space to place the SYSVM aperture inside
211 * which the first part is vram and the second part is gart (covering
216 /* FB region , it's same as local vram region in single GPU, in XGMI
217 * configuration, this region covers all GPUs in the same hive ,
218 * each GPU in the hive has the same view of this FB region .
219 * GPU0's vram starts at offset (0 * segment size) ,
220 * GPU1 starts at offset (1 * segment size), etc.
228 const struct firmware *fw; /* MC firmware */
230 struct amdgpu_irq_src vm_fault;
233 uint32_t srbm_soft_reset;
235 uint32_t sdpif_register;
237 u64 shared_aperture_start;
238 u64 shared_aperture_end;
239 u64 private_aperture_start;
240 u64 private_aperture_end;
241 /* protects concurrent invalidation */
242 spinlock_t invalidate_lock;
243 bool translate_further;
244 struct kfd_vm_fault_info *vm_fault_info;
245 atomic_t vm_fault_info_updated;
247 struct amdgpu_gmc_fault fault_ring[AMDGPU_GMC_FAULT_RING_SIZE];
249 uint64_t idx:AMDGPU_GMC_FAULT_RING_ORDER;
250 } fault_hash[AMDGPU_GMC_FAULT_HASH_SIZE];
251 uint64_t last_fault:AMDGPU_GMC_FAULT_RING_ORDER;
255 const struct amdgpu_gmc_funcs *gmc_funcs;
257 struct amdgpu_xgmi xgmi;
258 struct amdgpu_irq_src ecc_irq;
261 uint32_t vmid0_page_table_block_size;
262 uint32_t vmid0_page_table_depth;
263 struct amdgpu_bo *pdb0_bo;
264 /* CPU kmapped address of pdb0*/
269 /* number of UMC instances */
271 /* mode2 save restore */
274 u64 VM_DUMMY_PAGE_FAULT_CNTL;
275 u64 VM_DUMMY_PAGE_FAULT_ADDR_LO32;
276 u64 VM_DUMMY_PAGE_FAULT_ADDR_HI32;
277 u64 VM_L2_PROTECTION_FAULT_CNTL;
278 u64 VM_L2_PROTECTION_FAULT_CNTL2;
279 u64 VM_L2_PROTECTION_FAULT_MM_CNTL3;
280 u64 VM_L2_PROTECTION_FAULT_MM_CNTL4;
281 u64 VM_L2_PROTECTION_FAULT_ADDR_LO32;
282 u64 VM_L2_PROTECTION_FAULT_ADDR_HI32;
284 u64 VM_L2_MM_GROUP_RT_CLASSES;
285 u64 VM_L2_BANK_SELECT_RESERVED_CID;
286 u64 VM_L2_BANK_SELECT_RESERVED_CID2;
287 u64 VM_L2_CACHE_PARITY_CNTL;
288 u64 VM_L2_IH_LOG_CNTL;
289 u64 VM_CONTEXT_CNTL[16];
290 u64 VM_CONTEXT_PAGE_TABLE_BASE_ADDR_LO32[16];
291 u64 VM_CONTEXT_PAGE_TABLE_BASE_ADDR_HI32[16];
292 u64 VM_CONTEXT_PAGE_TABLE_START_ADDR_LO32[16];
293 u64 VM_CONTEXT_PAGE_TABLE_START_ADDR_HI32[16];
294 u64 VM_CONTEXT_PAGE_TABLE_END_ADDR_LO32[16];
295 u64 VM_CONTEXT_PAGE_TABLE_END_ADDR_HI32[16];
296 u64 MC_VM_MX_L1_TLB_CNTL;
299 #define amdgpu_gmc_flush_gpu_tlb(adev, vmid, vmhub, type) ((adev)->gmc.gmc_funcs->flush_gpu_tlb((adev), (vmid), (vmhub), (type)))
300 #define amdgpu_gmc_flush_gpu_tlb_pasid(adev, pasid, type, allhub, inst) \
301 ((adev)->gmc.gmc_funcs->flush_gpu_tlb_pasid \
302 ((adev), (pasid), (type), (allhub), (inst)))
303 #define amdgpu_gmc_emit_flush_gpu_tlb(r, vmid, addr) (r)->adev->gmc.gmc_funcs->emit_flush_gpu_tlb((r), (vmid), (addr))
304 #define amdgpu_gmc_emit_pasid_mapping(r, vmid, pasid) (r)->adev->gmc.gmc_funcs->emit_pasid_mapping((r), (vmid), (pasid))
305 #define amdgpu_gmc_map_mtype(adev, flags) (adev)->gmc.gmc_funcs->map_mtype((adev),(flags))
306 #define amdgpu_gmc_get_vm_pde(adev, level, dst, flags) (adev)->gmc.gmc_funcs->get_vm_pde((adev), (level), (dst), (flags))
307 #define amdgpu_gmc_get_vm_pte(adev, mapping, flags) (adev)->gmc.gmc_funcs->get_vm_pte((adev), (mapping), (flags))
308 #define amdgpu_gmc_get_vbios_fb_size(adev) (adev)->gmc.gmc_funcs->get_vbios_fb_size((adev))
311 * amdgpu_gmc_vram_full_visible - Check if full VRAM is visible through the BAR
313 * @adev: amdgpu_device pointer
316 * True if full VRAM is visible through the BAR
318 static inline bool amdgpu_gmc_vram_full_visible(struct amdgpu_gmc *gmc)
320 WARN_ON(gmc->real_vram_size < gmc->visible_vram_size);
322 return (gmc->real_vram_size == gmc->visible_vram_size);
326 * amdgpu_gmc_sign_extend - sign extend the given gmc address
328 * @addr: address to extend
330 static inline uint64_t amdgpu_gmc_sign_extend(uint64_t addr)
332 if (addr >= AMDGPU_GMC_HOLE_START)
333 addr |= AMDGPU_GMC_HOLE_END;
338 int amdgpu_gmc_pdb0_alloc(struct amdgpu_device *adev);
339 void amdgpu_gmc_get_pde_for_bo(struct amdgpu_bo *bo, int level,
340 uint64_t *addr, uint64_t *flags);
341 int amdgpu_gmc_set_pte_pde(struct amdgpu_device *adev, void *cpu_pt_addr,
342 uint32_t gpu_page_idx, uint64_t addr,
344 uint64_t amdgpu_gmc_pd_addr(struct amdgpu_bo *bo);
345 uint64_t amdgpu_gmc_agp_addr(struct ttm_buffer_object *bo);
346 void amdgpu_gmc_sysvm_location(struct amdgpu_device *adev, struct amdgpu_gmc *mc);
347 void amdgpu_gmc_vram_location(struct amdgpu_device *adev, struct amdgpu_gmc *mc,
349 void amdgpu_gmc_gart_location(struct amdgpu_device *adev,
350 struct amdgpu_gmc *mc);
351 void amdgpu_gmc_agp_location(struct amdgpu_device *adev,
352 struct amdgpu_gmc *mc);
353 bool amdgpu_gmc_filter_faults(struct amdgpu_device *adev,
354 struct amdgpu_ih_ring *ih, uint64_t addr,
355 uint16_t pasid, uint64_t timestamp);
356 void amdgpu_gmc_filter_faults_remove(struct amdgpu_device *adev, uint64_t addr,
358 int amdgpu_gmc_ras_sw_init(struct amdgpu_device *adev);
359 int amdgpu_gmc_ras_late_init(struct amdgpu_device *adev);
360 void amdgpu_gmc_ras_fini(struct amdgpu_device *adev);
361 int amdgpu_gmc_allocate_vm_inv_eng(struct amdgpu_device *adev);
363 extern void amdgpu_gmc_tmz_set(struct amdgpu_device *adev);
364 extern void amdgpu_gmc_noretry_set(struct amdgpu_device *adev);
367 amdgpu_gmc_set_vm_fault_masks(struct amdgpu_device *adev, int hub_type,
370 void amdgpu_gmc_get_vbios_allocations(struct amdgpu_device *adev);
372 void amdgpu_gmc_init_pdb0(struct amdgpu_device *adev);
373 uint64_t amdgpu_gmc_vram_mc2pa(struct amdgpu_device *adev, uint64_t mc_addr);
374 uint64_t amdgpu_gmc_vram_pa(struct amdgpu_device *adev, struct amdgpu_bo *bo);
375 uint64_t amdgpu_gmc_vram_cpu_pa(struct amdgpu_device *adev, struct amdgpu_bo *bo);
376 int amdgpu_gmc_vram_checking(struct amdgpu_device *adev);