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
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:
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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18 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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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;
76 * VMHUB structures, functions & helpers
78 struct amdgpu_vmhub_funcs {
79 void (*print_l2_protection_fault_status)(struct amdgpu_device *adev,
81 uint32_t (*get_invalidate_req)(unsigned int vmid, uint32_t flush_type);
85 uint32_t ctx0_ptb_addr_lo32;
86 uint32_t ctx0_ptb_addr_hi32;
87 uint32_t vm_inv_eng0_sem;
88 uint32_t vm_inv_eng0_req;
89 uint32_t vm_inv_eng0_ack;
90 uint32_t vm_context0_cntl;
91 uint32_t vm_l2_pro_fault_status;
92 uint32_t vm_l2_pro_fault_cntl;
95 * store the register distances between two continuous context domain
96 * and invalidation engine.
98 uint32_t ctx_distance;
99 uint32_t ctx_addr_distance; /* include LO32/HI32 */
100 uint32_t eng_distance;
101 uint32_t eng_addr_distance; /* include LO32/HI32 */
103 uint32_t vm_cntx_cntl;
104 uint32_t vm_cntx_cntl_vm_fault;
105 uint32_t vm_l2_bank_select_reserved_cid2;
107 uint32_t vm_contexts_disable;
109 const struct amdgpu_vmhub_funcs *vmhub_funcs;
113 * GPU MC structures, functions & helpers
115 struct amdgpu_gmc_funcs {
116 /* flush the vm tlb via mmio */
117 void (*flush_gpu_tlb)(struct amdgpu_device *adev, uint32_t vmid,
118 uint32_t vmhub, uint32_t flush_type);
119 /* flush the vm tlb via pasid */
120 int (*flush_gpu_tlb_pasid)(struct amdgpu_device *adev, uint16_t pasid,
121 uint32_t flush_type, bool all_hub);
122 /* flush the vm tlb via ring */
123 uint64_t (*emit_flush_gpu_tlb)(struct amdgpu_ring *ring, unsigned vmid,
125 /* Change the VMID -> PASID mapping */
126 void (*emit_pasid_mapping)(struct amdgpu_ring *ring, unsigned vmid,
128 /* enable/disable PRT support */
129 void (*set_prt)(struct amdgpu_device *adev, bool enable);
130 /* map mtype to hardware flags */
131 uint64_t (*map_mtype)(struct amdgpu_device *adev, uint32_t flags);
132 /* get the pde for a given mc addr */
133 void (*get_vm_pde)(struct amdgpu_device *adev, int level,
134 u64 *dst, u64 *flags);
135 /* get the pte flags to use for a BO VA mapping */
136 void (*get_vm_pte)(struct amdgpu_device *adev,
137 struct amdgpu_bo_va_mapping *mapping,
139 /* get the amount of memory used by the vbios for pre-OS console */
140 unsigned int (*get_vbios_fb_size)(struct amdgpu_device *adev);
143 struct amdgpu_xgmi_ras {
144 struct amdgpu_ras_block_object ras_block;
151 /* fixed per family */
152 u64 node_segment_size;
153 /* physical node (0-3) */
154 unsigned physical_node_id;
155 /* number of nodes (0-4) */
156 unsigned num_physical_nodes;
157 /* gpu list in the same hive */
158 struct list_head head;
160 struct ras_common_if *ras_if;
161 bool connected_to_cpu;
163 struct amdgpu_xgmi_ras *ras;
167 /* FB's physical address in MMIO space (for CPU to
168 * map FB). This is different compared to the agp/
169 * gart/vram_start/end field as the later is from
170 * GPU's view and aper_base is from CPU's view.
172 resource_size_t aper_size;
173 resource_size_t aper_base;
174 /* for some chips with <= 32MB we need to lie
175 * about vram size near mc fb location */
177 u64 visible_vram_size;
178 /* AGP aperture start and end in MC address space
179 * Driver find a hole in the MC address space
180 * to place AGP by setting MC_VM_AGP_BOT/TOP registers
181 * Under VMID0, logical address == MC address. AGP
182 * aperture maps to physical bus or IOVA addressed.
183 * AGP aperture is used to simulate FB in ZFB case.
184 * AGP aperture is also used for page table in system
185 * memory (mainly for APU).
191 /* GART aperture start and end in MC address space
192 * Driver find a hole in the MC address space
193 * to place GART by setting VM_CONTEXT0_PAGE_TABLE_START/END_ADDR
195 * Under VMID0, logical address inside GART aperture will
196 * be translated through gpuvm gart page table to access
197 * paged system memory
202 /* Frame buffer aperture of this GPU device. Different from
203 * fb_start (see below), this only covers the local GPU device.
204 * If driver uses FB aperture to access FB, driver get fb_start from
205 * MC_VM_FB_LOCATION_BASE (set by vbios) and calculate vram_start
206 * of this local device by adding an offset inside the XGMI hive.
207 * If driver uses GART table for VMID0 FB access, driver finds a hole in
208 * VMID0's virtual address space to place the SYSVM aperture inside
209 * which the first part is vram and the second part is gart (covering
214 /* FB region , it's same as local vram region in single GPU, in XGMI
215 * configuration, this region covers all GPUs in the same hive ,
216 * each GPU in the hive has the same view of this FB region .
217 * GPU0's vram starts at offset (0 * segment size) ,
218 * GPU1 starts at offset (1 * segment size), etc.
226 const struct firmware *fw; /* MC firmware */
228 struct amdgpu_irq_src vm_fault;
231 uint32_t srbm_soft_reset;
233 uint32_t sdpif_register;
235 u64 shared_aperture_start;
236 u64 shared_aperture_end;
237 u64 private_aperture_start;
238 u64 private_aperture_end;
239 /* protects concurrent invalidation */
240 spinlock_t invalidate_lock;
241 bool translate_further;
242 struct kfd_vm_fault_info *vm_fault_info;
243 atomic_t vm_fault_info_updated;
245 struct amdgpu_gmc_fault fault_ring[AMDGPU_GMC_FAULT_RING_SIZE];
247 uint64_t idx:AMDGPU_GMC_FAULT_RING_ORDER;
248 } fault_hash[AMDGPU_GMC_FAULT_HASH_SIZE];
249 uint64_t last_fault:AMDGPU_GMC_FAULT_RING_ORDER;
253 const struct amdgpu_gmc_funcs *gmc_funcs;
255 struct amdgpu_xgmi xgmi;
256 struct amdgpu_irq_src ecc_irq;
259 uint32_t vmid0_page_table_block_size;
260 uint32_t vmid0_page_table_depth;
261 struct amdgpu_bo *pdb0_bo;
262 /* CPU kmapped address of pdb0*/
267 /* number of UMC instances */
269 /* mode2 save restore */
272 u64 VM_DUMMY_PAGE_FAULT_CNTL;
273 u64 VM_DUMMY_PAGE_FAULT_ADDR_LO32;
274 u64 VM_DUMMY_PAGE_FAULT_ADDR_HI32;
275 u64 VM_L2_PROTECTION_FAULT_CNTL;
276 u64 VM_L2_PROTECTION_FAULT_CNTL2;
277 u64 VM_L2_PROTECTION_FAULT_MM_CNTL3;
278 u64 VM_L2_PROTECTION_FAULT_MM_CNTL4;
279 u64 VM_L2_PROTECTION_FAULT_ADDR_LO32;
280 u64 VM_L2_PROTECTION_FAULT_ADDR_HI32;
282 u64 VM_L2_MM_GROUP_RT_CLASSES;
283 u64 VM_L2_BANK_SELECT_RESERVED_CID;
284 u64 VM_L2_BANK_SELECT_RESERVED_CID2;
285 u64 VM_L2_CACHE_PARITY_CNTL;
286 u64 VM_L2_IH_LOG_CNTL;
287 u64 VM_CONTEXT_CNTL[16];
288 u64 VM_CONTEXT_PAGE_TABLE_BASE_ADDR_LO32[16];
289 u64 VM_CONTEXT_PAGE_TABLE_BASE_ADDR_HI32[16];
290 u64 VM_CONTEXT_PAGE_TABLE_START_ADDR_LO32[16];
291 u64 VM_CONTEXT_PAGE_TABLE_START_ADDR_HI32[16];
292 u64 VM_CONTEXT_PAGE_TABLE_END_ADDR_LO32[16];
293 u64 VM_CONTEXT_PAGE_TABLE_END_ADDR_HI32[16];
294 u64 MC_VM_MX_L1_TLB_CNTL;
297 #define amdgpu_gmc_flush_gpu_tlb(adev, vmid, vmhub, type) ((adev)->gmc.gmc_funcs->flush_gpu_tlb((adev), (vmid), (vmhub), (type)))
298 #define amdgpu_gmc_flush_gpu_tlb_pasid(adev, pasid, type, allhub) \
299 ((adev)->gmc.gmc_funcs->flush_gpu_tlb_pasid \
300 ((adev), (pasid), (type), (allhub)))
301 #define amdgpu_gmc_emit_flush_gpu_tlb(r, vmid, addr) (r)->adev->gmc.gmc_funcs->emit_flush_gpu_tlb((r), (vmid), (addr))
302 #define amdgpu_gmc_emit_pasid_mapping(r, vmid, pasid) (r)->adev->gmc.gmc_funcs->emit_pasid_mapping((r), (vmid), (pasid))
303 #define amdgpu_gmc_map_mtype(adev, flags) (adev)->gmc.gmc_funcs->map_mtype((adev),(flags))
304 #define amdgpu_gmc_get_vm_pde(adev, level, dst, flags) (adev)->gmc.gmc_funcs->get_vm_pde((adev), (level), (dst), (flags))
305 #define amdgpu_gmc_get_vm_pte(adev, mapping, flags) (adev)->gmc.gmc_funcs->get_vm_pte((adev), (mapping), (flags))
306 #define amdgpu_gmc_get_vbios_fb_size(adev) (adev)->gmc.gmc_funcs->get_vbios_fb_size((adev))
309 * amdgpu_gmc_vram_full_visible - Check if full VRAM is visible through the BAR
311 * @adev: amdgpu_device pointer
314 * True if full VRAM is visible through the BAR
316 static inline bool amdgpu_gmc_vram_full_visible(struct amdgpu_gmc *gmc)
318 WARN_ON(gmc->real_vram_size < gmc->visible_vram_size);
320 return (gmc->real_vram_size == gmc->visible_vram_size);
324 * amdgpu_gmc_sign_extend - sign extend the given gmc address
326 * @addr: address to extend
328 static inline uint64_t amdgpu_gmc_sign_extend(uint64_t addr)
330 if (addr >= AMDGPU_GMC_HOLE_START)
331 addr |= AMDGPU_GMC_HOLE_END;
336 int amdgpu_gmc_pdb0_alloc(struct amdgpu_device *adev);
337 void amdgpu_gmc_get_pde_for_bo(struct amdgpu_bo *bo, int level,
338 uint64_t *addr, uint64_t *flags);
339 int amdgpu_gmc_set_pte_pde(struct amdgpu_device *adev, void *cpu_pt_addr,
340 uint32_t gpu_page_idx, uint64_t addr,
342 uint64_t amdgpu_gmc_pd_addr(struct amdgpu_bo *bo);
343 uint64_t amdgpu_gmc_agp_addr(struct ttm_buffer_object *bo);
344 void amdgpu_gmc_sysvm_location(struct amdgpu_device *adev, struct amdgpu_gmc *mc);
345 void amdgpu_gmc_vram_location(struct amdgpu_device *adev, struct amdgpu_gmc *mc,
347 void amdgpu_gmc_gart_location(struct amdgpu_device *adev,
348 struct amdgpu_gmc *mc);
349 void amdgpu_gmc_agp_location(struct amdgpu_device *adev,
350 struct amdgpu_gmc *mc);
351 bool amdgpu_gmc_filter_faults(struct amdgpu_device *adev,
352 struct amdgpu_ih_ring *ih, uint64_t addr,
353 uint16_t pasid, uint64_t timestamp);
354 void amdgpu_gmc_filter_faults_remove(struct amdgpu_device *adev, uint64_t addr,
356 int amdgpu_gmc_ras_sw_init(struct amdgpu_device *adev);
357 int amdgpu_gmc_ras_late_init(struct amdgpu_device *adev);
358 void amdgpu_gmc_ras_fini(struct amdgpu_device *adev);
359 int amdgpu_gmc_allocate_vm_inv_eng(struct amdgpu_device *adev);
361 extern void amdgpu_gmc_tmz_set(struct amdgpu_device *adev);
362 extern void amdgpu_gmc_noretry_set(struct amdgpu_device *adev);
365 amdgpu_gmc_set_vm_fault_masks(struct amdgpu_device *adev, int hub_type,
368 void amdgpu_gmc_get_vbios_allocations(struct amdgpu_device *adev);
370 void amdgpu_gmc_init_pdb0(struct amdgpu_device *adev);
371 uint64_t amdgpu_gmc_vram_mc2pa(struct amdgpu_device *adev, uint64_t mc_addr);
372 uint64_t amdgpu_gmc_vram_pa(struct amdgpu_device *adev, struct amdgpu_bo *bo);
373 uint64_t amdgpu_gmc_vram_cpu_pa(struct amdgpu_device *adev, struct amdgpu_bo *bo);
374 int amdgpu_gmc_vram_checking(struct amdgpu_device *adev);