2 * Copyright 2018 Advanced Micro Devices, Inc.
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21 * The above copyright notice and this permission notice (including the
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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_sem;
81 uint32_t vm_inv_eng0_req;
82 uint32_t vm_inv_eng0_ack;
83 uint32_t vm_context0_cntl;
84 uint32_t vm_l2_pro_fault_status;
85 uint32_t vm_l2_pro_fault_cntl;
89 * GPU MC structures, functions & helpers
91 struct amdgpu_gmc_funcs {
92 /* flush the vm tlb via mmio */
93 void (*flush_gpu_tlb)(struct amdgpu_device *adev, uint32_t vmid,
94 uint32_t vmhub, uint32_t flush_type);
95 /* flush the vm tlb via pasid */
96 int (*flush_gpu_tlb_pasid)(struct amdgpu_device *adev, uint16_t pasid,
97 uint32_t flush_type, bool all_hub);
98 /* flush the vm tlb via ring */
99 uint64_t (*emit_flush_gpu_tlb)(struct amdgpu_ring *ring, unsigned vmid,
101 /* Change the VMID -> PASID mapping */
102 void (*emit_pasid_mapping)(struct amdgpu_ring *ring, unsigned vmid,
104 /* enable/disable PRT support */
105 void (*set_prt)(struct amdgpu_device *adev, bool enable);
106 /* map mtype to hardware flags */
107 uint64_t (*map_mtype)(struct amdgpu_device *adev, uint32_t flags);
108 /* get the pde for a given mc addr */
109 void (*get_vm_pde)(struct amdgpu_device *adev, int level,
110 u64 *dst, u64 *flags);
111 /* get the pte flags to use for a BO VA mapping */
112 void (*get_vm_pte)(struct amdgpu_device *adev,
113 struct amdgpu_bo_va_mapping *mapping,
121 /* fixed per family */
122 u64 node_segment_size;
123 /* physical node (0-3) */
124 unsigned physical_node_id;
125 /* number of nodes (0-4) */
126 unsigned num_physical_nodes;
127 /* gpu list in the same hive */
128 struct list_head head;
130 struct ras_common_if *ras_if;
134 /* FB's physical address in MMIO space (for CPU to
135 * map FB). This is different compared to the agp/
136 * gart/vram_start/end field as the later is from
137 * GPU's view and aper_base is from CPU's view.
139 resource_size_t aper_size;
140 resource_size_t aper_base;
141 /* for some chips with <= 32MB we need to lie
142 * about vram size near mc fb location */
144 u64 visible_vram_size;
145 /* AGP aperture start and end in MC address space
146 * Driver find a hole in the MC address space
147 * to place AGP by setting MC_VM_AGP_BOT/TOP registers
148 * Under VMID0, logical address == MC address. AGP
149 * aperture maps to physical bus or IOVA addressed.
150 * AGP aperture is used to simulate FB in ZFB case.
151 * AGP aperture is also used for page table in system
152 * memory (mainly for APU).
158 /* GART aperture start and end in MC address space
159 * Driver find a hole in the MC address space
160 * to place GART by setting VM_CONTEXT0_PAGE_TABLE_START/END_ADDR
162 * Under VMID0, logical address inside GART aperture will
163 * be translated through gpuvm gart page table to access
164 * paged system memory
169 /* Frame buffer aperture of this GPU device. Different from
170 * fb_start (see below), this only covers the local GPU device.
171 * Driver get fb_start from MC_VM_FB_LOCATION_BASE (set by vbios)
172 * and calculate vram_start of this local device by adding an
173 * offset inside the XGMI hive.
174 * Under VMID0, logical address == MC address
178 /* FB region , it's same as local vram region in single GPU, in XGMI
179 * configuration, this region covers all GPUs in the same hive ,
180 * each GPU in the hive has the same view of this FB region .
181 * GPU0's vram starts at offset (0 * segment size) ,
182 * GPU1 starts at offset (1 * segment size), etc.
190 const struct firmware *fw; /* MC firmware */
192 struct amdgpu_irq_src vm_fault;
195 uint32_t srbm_soft_reset;
197 uint64_t stolen_size;
198 uint32_t sdpif_register;
200 u64 shared_aperture_start;
201 u64 shared_aperture_end;
202 u64 private_aperture_start;
203 u64 private_aperture_end;
204 /* protects concurrent invalidation */
205 spinlock_t invalidate_lock;
206 bool translate_further;
207 struct kfd_vm_fault_info *vm_fault_info;
208 atomic_t vm_fault_info_updated;
210 struct amdgpu_gmc_fault fault_ring[AMDGPU_GMC_FAULT_RING_SIZE];
212 uint64_t idx:AMDGPU_GMC_FAULT_RING_ORDER;
213 } fault_hash[AMDGPU_GMC_FAULT_HASH_SIZE];
214 uint64_t last_fault:AMDGPU_GMC_FAULT_RING_ORDER;
218 const struct amdgpu_gmc_funcs *gmc_funcs;
220 struct amdgpu_xgmi xgmi;
221 struct amdgpu_irq_src ecc_irq;
224 #define amdgpu_gmc_flush_gpu_tlb(adev, vmid, vmhub, type) ((adev)->gmc.gmc_funcs->flush_gpu_tlb((adev), (vmid), (vmhub), (type)))
225 #define amdgpu_gmc_flush_gpu_tlb_pasid(adev, pasid, type, allhub) \
226 ((adev)->gmc.gmc_funcs->flush_gpu_tlb_pasid \
227 ((adev), (pasid), (type), (allhub)))
228 #define amdgpu_gmc_emit_flush_gpu_tlb(r, vmid, addr) (r)->adev->gmc.gmc_funcs->emit_flush_gpu_tlb((r), (vmid), (addr))
229 #define amdgpu_gmc_emit_pasid_mapping(r, vmid, pasid) (r)->adev->gmc.gmc_funcs->emit_pasid_mapping((r), (vmid), (pasid))
230 #define amdgpu_gmc_map_mtype(adev, flags) (adev)->gmc.gmc_funcs->map_mtype((adev),(flags))
231 #define amdgpu_gmc_get_vm_pde(adev, level, dst, flags) (adev)->gmc.gmc_funcs->get_vm_pde((adev), (level), (dst), (flags))
232 #define amdgpu_gmc_get_vm_pte(adev, mapping, flags) (adev)->gmc.gmc_funcs->get_vm_pte((adev), (mapping), (flags))
235 * amdgpu_gmc_vram_full_visible - Check if full VRAM is visible through the BAR
237 * @adev: amdgpu_device pointer
240 * True if full VRAM is visible through the BAR
242 static inline bool amdgpu_gmc_vram_full_visible(struct amdgpu_gmc *gmc)
244 WARN_ON(gmc->real_vram_size < gmc->visible_vram_size);
246 return (gmc->real_vram_size == gmc->visible_vram_size);
250 * amdgpu_gmc_sign_extend - sign extend the given gmc address
252 * @addr: address to extend
254 static inline uint64_t amdgpu_gmc_sign_extend(uint64_t addr)
256 if (addr >= AMDGPU_GMC_HOLE_START)
257 addr |= AMDGPU_GMC_HOLE_END;
262 void amdgpu_gmc_get_pde_for_bo(struct amdgpu_bo *bo, int level,
263 uint64_t *addr, uint64_t *flags);
264 int amdgpu_gmc_set_pte_pde(struct amdgpu_device *adev, void *cpu_pt_addr,
265 uint32_t gpu_page_idx, uint64_t addr,
267 uint64_t amdgpu_gmc_pd_addr(struct amdgpu_bo *bo);
268 uint64_t amdgpu_gmc_agp_addr(struct ttm_buffer_object *bo);
269 void amdgpu_gmc_vram_location(struct amdgpu_device *adev, struct amdgpu_gmc *mc,
271 void amdgpu_gmc_gart_location(struct amdgpu_device *adev,
272 struct amdgpu_gmc *mc);
273 void amdgpu_gmc_agp_location(struct amdgpu_device *adev,
274 struct amdgpu_gmc *mc);
275 bool amdgpu_gmc_filter_faults(struct amdgpu_device *adev, uint64_t addr,
276 uint16_t pasid, uint64_t timestamp);
277 int amdgpu_gmc_ras_late_init(struct amdgpu_device *adev);
278 void amdgpu_gmc_ras_fini(struct amdgpu_device *adev);
279 int amdgpu_gmc_allocate_vm_inv_eng(struct amdgpu_device *adev);
281 extern void amdgpu_gmc_tmz_set(struct amdgpu_device *adev);