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
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.
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"
33 /* VA hole for 48bit addresses on Vega10 */
34 #define AMDGPU_GMC_HOLE_START 0x0000800000000000ULL
35 #define AMDGPU_GMC_HOLE_END 0xffff800000000000ULL
38 * Hardware is programmed as if the hole doesn't exists with start and end
41 * This mask is used to remove the upper 16bits of the VA and so come up with
42 * the linear addr value.
44 #define AMDGPU_GMC_HOLE_MASK 0x0000ffffffffffffULL
47 * Ring size as power of two for the log of recent faults.
49 #define AMDGPU_GMC_FAULT_RING_ORDER 8
50 #define AMDGPU_GMC_FAULT_RING_SIZE (1 << AMDGPU_GMC_FAULT_RING_ORDER)
53 * Hash size as power of two for the log of recent faults
55 #define AMDGPU_GMC_FAULT_HASH_ORDER 8
56 #define AMDGPU_GMC_FAULT_HASH_SIZE (1 << AMDGPU_GMC_FAULT_HASH_ORDER)
59 * Number of IH timestamp ticks until a fault is considered handled
61 #define AMDGPU_GMC_FAULT_TIMEOUT 5000ULL
66 * GMC page fault information
68 struct amdgpu_gmc_fault {
70 uint64_t next:AMDGPU_GMC_FAULT_RING_ORDER;
75 * VMHUB structures, functions & helpers
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;
88 * GPU MC structures, functions & helpers
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,
97 /* Change the VMID -> PASID mapping */
98 void (*emit_pasid_mapping)(struct amdgpu_ring *ring, unsigned vmid,
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,
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);
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;
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 */
131 u64 visible_vram_size;
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.
152 const struct firmware *fw; /* MC firmware */
154 struct amdgpu_irq_src vm_fault;
156 uint32_t srbm_soft_reset;
158 uint64_t stolen_size;
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;
170 struct amdgpu_gmc_fault fault_ring[AMDGPU_GMC_FAULT_RING_SIZE];
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;
176 const struct amdgpu_gmc_funcs *gmc_funcs;
178 struct amdgpu_xgmi xgmi;
179 struct amdgpu_irq_src ecc_irq;
180 struct ras_common_if *ras_if;
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))
190 * amdgpu_gmc_vram_full_visible - Check if full VRAM is visible through the BAR
192 * @adev: amdgpu_device pointer
195 * True if full VRAM is visible through the BAR
197 static inline bool amdgpu_gmc_vram_full_visible(struct amdgpu_gmc *gmc)
199 WARN_ON(gmc->real_vram_size < gmc->visible_vram_size);
201 return (gmc->real_vram_size == gmc->visible_vram_size);
205 * amdgpu_gmc_sign_extend - sign extend the given gmc address
207 * @addr: address to extend
209 static inline uint64_t amdgpu_gmc_sign_extend(uint64_t addr)
211 if (addr >= AMDGPU_GMC_HOLE_START)
212 addr |= AMDGPU_GMC_HOLE_END;
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,
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,
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);