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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 #include "amdgpu_ras.h"
33
34 /* VA hole for 48bit addresses on Vega10 */
35 #define AMDGPU_GMC_HOLE_START   0x0000800000000000ULL
36 #define AMDGPU_GMC_HOLE_END     0xffff800000000000ULL
37
38 /*
39  * Hardware is programmed as if the hole doesn't exists with start and end
40  * address values.
41  *
42  * This mask is used to remove the upper 16bits of the VA and so come up with
43  * the linear addr value.
44  */
45 #define AMDGPU_GMC_HOLE_MASK    0x0000ffffffffffffULL
46
47 /*
48  * Ring size as power of two for the log of recent faults.
49  */
50 #define AMDGPU_GMC_FAULT_RING_ORDER     8
51 #define AMDGPU_GMC_FAULT_RING_SIZE      (1 << AMDGPU_GMC_FAULT_RING_ORDER)
52
53 /*
54  * Hash size as power of two for the log of recent faults
55  */
56 #define AMDGPU_GMC_FAULT_HASH_ORDER     8
57 #define AMDGPU_GMC_FAULT_HASH_SIZE      (1 << AMDGPU_GMC_FAULT_HASH_ORDER)
58
59 /*
60  * Number of IH timestamp ticks until a fault is considered handled
61  */
62 #define AMDGPU_GMC_FAULT_TIMEOUT        5000ULL
63
64 struct firmware;
65
66 enum amdgpu_memory_partition {
67         UNKNOWN_MEMORY_PARTITION_MODE = 0,
68         AMDGPU_NPS1_PARTITION_MODE = 1,
69         AMDGPU_NPS2_PARTITION_MODE = 2,
70         AMDGPU_NPS3_PARTITION_MODE = 3,
71         AMDGPU_NPS4_PARTITION_MODE = 4,
72         AMDGPU_NPS6_PARTITION_MODE = 6,
73         AMDGPU_NPS8_PARTITION_MODE = 8,
74 };
75
76 #define AMDGPU_ALL_NPS_MASK                                                  \
77         (BIT(AMDGPU_NPS1_PARTITION_MODE) | BIT(AMDGPU_NPS2_PARTITION_MODE) | \
78          BIT(AMDGPU_NPS3_PARTITION_MODE) | BIT(AMDGPU_NPS4_PARTITION_MODE) | \
79          BIT(AMDGPU_NPS6_PARTITION_MODE) | BIT(AMDGPU_NPS8_PARTITION_MODE))
80
81 #define AMDGPU_GMC_INIT_RESET_NPS  BIT(0)
82
83 /*
84  * GMC page fault information
85  */
86 struct amdgpu_gmc_fault {
87         uint64_t        timestamp:48;
88         uint64_t        next:AMDGPU_GMC_FAULT_RING_ORDER;
89         atomic64_t      key;
90         uint64_t        timestamp_expiry:48;
91 };
92
93 /*
94  * VMHUB structures, functions & helpers
95  */
96 struct amdgpu_vmhub_funcs {
97         void (*print_l2_protection_fault_status)(struct amdgpu_device *adev,
98                                                  uint32_t status);
99         uint32_t (*get_invalidate_req)(unsigned int vmid, uint32_t flush_type);
100 };
101
102 struct amdgpu_vmhub {
103         uint32_t        ctx0_ptb_addr_lo32;
104         uint32_t        ctx0_ptb_addr_hi32;
105         uint32_t        vm_inv_eng0_sem;
106         uint32_t        vm_inv_eng0_req;
107         uint32_t        vm_inv_eng0_ack;
108         uint32_t        vm_context0_cntl;
109         uint32_t        vm_l2_pro_fault_status;
110         uint32_t        vm_l2_pro_fault_cntl;
111
112         /*
113          * store the register distances between two continuous context domain
114          * and invalidation engine.
115          */
116         uint32_t        ctx_distance;
117         uint32_t        ctx_addr_distance; /* include LO32/HI32 */
118         uint32_t        eng_distance;
119         uint32_t        eng_addr_distance; /* include LO32/HI32 */
120
121         uint32_t        vm_cntx_cntl;
122         uint32_t        vm_cntx_cntl_vm_fault;
123         uint32_t        vm_l2_bank_select_reserved_cid2;
124
125         uint32_t        vm_contexts_disable;
126
127         bool            sdma_invalidation_workaround;
128
129         const struct amdgpu_vmhub_funcs *vmhub_funcs;
130 };
131
132 /*
133  * GPU MC structures, functions & helpers
134  */
135 struct amdgpu_gmc_funcs {
136         /* flush the vm tlb via mmio */
137         void (*flush_gpu_tlb)(struct amdgpu_device *adev, uint32_t vmid,
138                                 uint32_t vmhub, uint32_t flush_type);
139         /* flush the vm tlb via pasid */
140         void (*flush_gpu_tlb_pasid)(struct amdgpu_device *adev, uint16_t pasid,
141                                     uint32_t flush_type, bool all_hub,
142                                     uint32_t inst);
143         /* flush the vm tlb via ring */
144         uint64_t (*emit_flush_gpu_tlb)(struct amdgpu_ring *ring, unsigned vmid,
145                                        uint64_t pd_addr);
146         /* Change the VMID -> PASID mapping */
147         void (*emit_pasid_mapping)(struct amdgpu_ring *ring, unsigned vmid,
148                                    unsigned pasid);
149         /* enable/disable PRT support */
150         void (*set_prt)(struct amdgpu_device *adev, bool enable);
151         /* map mtype to hardware flags */
152         uint64_t (*map_mtype)(struct amdgpu_device *adev, uint32_t flags);
153         /* get the pde for a given mc addr */
154         void (*get_vm_pde)(struct amdgpu_device *adev, int level,
155                            u64 *dst, u64 *flags);
156         /* get the pte flags to use for a BO VA mapping */
157         void (*get_vm_pte)(struct amdgpu_device *adev,
158                            struct amdgpu_bo_va_mapping *mapping,
159                            uint64_t *flags);
160         /* override per-page pte flags */
161         void (*override_vm_pte_flags)(struct amdgpu_device *dev,
162                                       struct amdgpu_vm *vm,
163                                       uint64_t addr, uint64_t *flags);
164         /* get the amount of memory used by the vbios for pre-OS console */
165         unsigned int (*get_vbios_fb_size)(struct amdgpu_device *adev);
166         /* get the DCC buffer alignment */
167         unsigned int (*get_dcc_alignment)(struct amdgpu_device *adev);
168
169         enum amdgpu_memory_partition (*query_mem_partition_mode)(
170                 struct amdgpu_device *adev);
171         /* Request NPS mode */
172         int (*request_mem_partition_mode)(struct amdgpu_device *adev,
173                                           int nps_mode);
174         bool (*need_reset_on_init)(struct amdgpu_device *adev);
175 };
176
177 struct amdgpu_xgmi_ras {
178         struct amdgpu_ras_block_object ras_block;
179 };
180
181 struct amdgpu_xgmi {
182         /* from psp */
183         u64 node_id;
184         u64 hive_id;
185         /* fixed per family */
186         u64 node_segment_size;
187         /* physical node (0-3) */
188         unsigned physical_node_id;
189         /* number of nodes (0-4) */
190         unsigned num_physical_nodes;
191         /* gpu list in the same hive */
192         struct list_head head;
193         bool supported;
194         struct ras_common_if *ras_if;
195         bool connected_to_cpu;
196         struct amdgpu_xgmi_ras *ras;
197 };
198
199 struct amdgpu_mem_partition_info {
200         union {
201                 struct {
202                         uint32_t fpfn;
203                         uint32_t lpfn;
204                 } range;
205                 struct {
206                         int node;
207                 } numa;
208         };
209         uint64_t size;
210 };
211
212 #define INVALID_PFN    -1
213
214 struct amdgpu_gmc_memrange {
215         uint64_t base_address;
216         uint64_t limit_address;
217         uint32_t flags;
218         int nid_mask;
219 };
220
221 enum amdgpu_gart_placement {
222         AMDGPU_GART_PLACEMENT_BEST_FIT = 0,
223         AMDGPU_GART_PLACEMENT_HIGH,
224         AMDGPU_GART_PLACEMENT_LOW,
225 };
226
227 struct amdgpu_gmc {
228         /* FB's physical address in MMIO space (for CPU to
229          * map FB). This is different compared to the agp/
230          * gart/vram_start/end field as the later is from
231          * GPU's view and aper_base is from CPU's view.
232          */
233         resource_size_t         aper_size;
234         resource_size_t         aper_base;
235         /* for some chips with <= 32MB we need to lie
236          * about vram size near mc fb location */
237         u64                     mc_vram_size;
238         u64                     visible_vram_size;
239         /* AGP aperture start and end in MC address space
240          * Driver find a hole in the MC address space
241          * to place AGP by setting MC_VM_AGP_BOT/TOP registers
242          * Under VMID0, logical address == MC address. AGP
243          * aperture maps to physical bus or IOVA addressed.
244          * AGP aperture is used to simulate FB in ZFB case.
245          * AGP aperture is also used for page table in system
246          * memory (mainly for APU).
247          *
248          */
249         u64                     agp_size;
250         u64                     agp_start;
251         u64                     agp_end;
252         /* GART aperture start and end in MC address space
253          * Driver find a hole in the MC address space
254          * to place GART by setting VM_CONTEXT0_PAGE_TABLE_START/END_ADDR
255          * registers
256          * Under VMID0, logical address inside GART aperture will
257          * be translated through gpuvm gart page table to access
258          * paged system memory
259          */
260         u64                     gart_size;
261         u64                     gart_start;
262         u64                     gart_end;
263         /* Frame buffer aperture of this GPU device. Different from
264          * fb_start (see below), this only covers the local GPU device.
265          * If driver uses FB aperture to access FB, driver get fb_start from
266          * MC_VM_FB_LOCATION_BASE (set by vbios) and calculate vram_start
267          * of this local device by adding an offset inside the XGMI hive.
268          * If driver uses GART table for VMID0 FB access, driver finds a hole in
269          * VMID0's virtual address space to place the SYSVM aperture inside
270          * which the first part is vram and the second part is gart (covering
271          * system ram).
272          */
273         u64                     vram_start;
274         u64                     vram_end;
275         /* FB region , it's same as local vram region in single GPU, in XGMI
276          * configuration, this region covers all GPUs in the same hive ,
277          * each GPU in the hive has the same view of this FB region .
278          * GPU0's vram starts at offset (0 * segment size) ,
279          * GPU1 starts at offset (1 * segment size), etc.
280          */
281         u64                     fb_start;
282         u64                     fb_end;
283         unsigned                vram_width;
284         u64                     real_vram_size;
285         int                     vram_mtrr;
286         u64                     mc_mask;
287         const struct firmware   *fw;    /* MC firmware */
288         uint32_t                fw_version;
289         struct amdgpu_irq_src   vm_fault;
290         uint32_t                vram_type;
291         uint8_t                 vram_vendor;
292         uint32_t                srbm_soft_reset;
293         bool                    prt_warning;
294         uint32_t                sdpif_register;
295         /* apertures */
296         u64                     shared_aperture_start;
297         u64                     shared_aperture_end;
298         u64                     private_aperture_start;
299         u64                     private_aperture_end;
300         /* protects concurrent invalidation */
301         spinlock_t              invalidate_lock;
302         bool                    translate_further;
303         struct kfd_vm_fault_info *vm_fault_info;
304         atomic_t                vm_fault_info_updated;
305
306         struct amdgpu_gmc_fault fault_ring[AMDGPU_GMC_FAULT_RING_SIZE];
307         struct {
308                 uint64_t        idx:AMDGPU_GMC_FAULT_RING_ORDER;
309         } fault_hash[AMDGPU_GMC_FAULT_HASH_SIZE];
310         uint64_t                last_fault:AMDGPU_GMC_FAULT_RING_ORDER;
311
312         bool tmz_enabled;
313         bool is_app_apu;
314
315         struct amdgpu_mem_partition_info *mem_partitions;
316         uint8_t num_mem_partitions;
317         const struct amdgpu_gmc_funcs   *gmc_funcs;
318         enum amdgpu_memory_partition    requested_nps_mode;
319         uint32_t supported_nps_modes;
320         uint32_t reset_flags;
321
322         struct amdgpu_xgmi xgmi;
323         struct amdgpu_irq_src   ecc_irq;
324         int noretry;
325
326         uint32_t        vmid0_page_table_block_size;
327         uint32_t        vmid0_page_table_depth;
328         struct amdgpu_bo                *pdb0_bo;
329         /* CPU kmapped address of pdb0*/
330         void                            *ptr_pdb0;
331
332         /* MALL size */
333         u64 mall_size;
334         uint32_t m_half_use;
335
336         /* number of UMC instances */
337         int num_umc;
338         /* mode2 save restore */
339         u64 VM_L2_CNTL;
340         u64 VM_L2_CNTL2;
341         u64 VM_DUMMY_PAGE_FAULT_CNTL;
342         u64 VM_DUMMY_PAGE_FAULT_ADDR_LO32;
343         u64 VM_DUMMY_PAGE_FAULT_ADDR_HI32;
344         u64 VM_L2_PROTECTION_FAULT_CNTL;
345         u64 VM_L2_PROTECTION_FAULT_CNTL2;
346         u64 VM_L2_PROTECTION_FAULT_MM_CNTL3;
347         u64 VM_L2_PROTECTION_FAULT_MM_CNTL4;
348         u64 VM_L2_PROTECTION_FAULT_ADDR_LO32;
349         u64 VM_L2_PROTECTION_FAULT_ADDR_HI32;
350         u64 VM_DEBUG;
351         u64 VM_L2_MM_GROUP_RT_CLASSES;
352         u64 VM_L2_BANK_SELECT_RESERVED_CID;
353         u64 VM_L2_BANK_SELECT_RESERVED_CID2;
354         u64 VM_L2_CACHE_PARITY_CNTL;
355         u64 VM_L2_IH_LOG_CNTL;
356         u64 VM_CONTEXT_CNTL[16];
357         u64 VM_CONTEXT_PAGE_TABLE_BASE_ADDR_LO32[16];
358         u64 VM_CONTEXT_PAGE_TABLE_BASE_ADDR_HI32[16];
359         u64 VM_CONTEXT_PAGE_TABLE_START_ADDR_LO32[16];
360         u64 VM_CONTEXT_PAGE_TABLE_START_ADDR_HI32[16];
361         u64 VM_CONTEXT_PAGE_TABLE_END_ADDR_LO32[16];
362         u64 VM_CONTEXT_PAGE_TABLE_END_ADDR_HI32[16];
363         u64 MC_VM_MX_L1_TLB_CNTL;
364
365         u64 noretry_flags;
366
367         bool flush_tlb_needs_extra_type_0;
368         bool flush_tlb_needs_extra_type_2;
369         bool flush_pasid_uses_kiq;
370 };
371
372 #define amdgpu_gmc_emit_flush_gpu_tlb(r, vmid, addr) (r)->adev->gmc.gmc_funcs->emit_flush_gpu_tlb((r), (vmid), (addr))
373 #define amdgpu_gmc_emit_pasid_mapping(r, vmid, pasid) (r)->adev->gmc.gmc_funcs->emit_pasid_mapping((r), (vmid), (pasid))
374 #define amdgpu_gmc_map_mtype(adev, flags) (adev)->gmc.gmc_funcs->map_mtype((adev),(flags))
375 #define amdgpu_gmc_get_vm_pde(adev, level, dst, flags) (adev)->gmc.gmc_funcs->get_vm_pde((adev), (level), (dst), (flags))
376 #define amdgpu_gmc_get_vm_pte(adev, mapping, flags) (adev)->gmc.gmc_funcs->get_vm_pte((adev), (mapping), (flags))
377 #define amdgpu_gmc_override_vm_pte_flags(adev, vm, addr, pte_flags)     \
378         (adev)->gmc.gmc_funcs->override_vm_pte_flags                    \
379                 ((adev), (vm), (addr), (pte_flags))
380 #define amdgpu_gmc_get_vbios_fb_size(adev) (adev)->gmc.gmc_funcs->get_vbios_fb_size((adev))
381 #define amdgpu_gmc_get_dcc_alignment(adev) ({                   \
382         typeof(adev) _adev = (adev);                            \
383         _adev->gmc.gmc_funcs->get_dcc_alignment(_adev);         \
384 })
385
386 /**
387  * amdgpu_gmc_vram_full_visible - Check if full VRAM is visible through the BAR
388  *
389  * @adev: amdgpu_device pointer
390  *
391  * Returns:
392  * True if full VRAM is visible through the BAR
393  */
394 static inline bool amdgpu_gmc_vram_full_visible(struct amdgpu_gmc *gmc)
395 {
396         WARN_ON(gmc->real_vram_size < gmc->visible_vram_size);
397
398         return (gmc->real_vram_size == gmc->visible_vram_size);
399 }
400
401 /**
402  * amdgpu_gmc_sign_extend - sign extend the given gmc address
403  *
404  * @addr: address to extend
405  */
406 static inline uint64_t amdgpu_gmc_sign_extend(uint64_t addr)
407 {
408         if (addr >= AMDGPU_GMC_HOLE_START)
409                 addr |= AMDGPU_GMC_HOLE_END;
410
411         return addr;
412 }
413
414 int amdgpu_gmc_pdb0_alloc(struct amdgpu_device *adev);
415 void amdgpu_gmc_get_pde_for_bo(struct amdgpu_bo *bo, int level,
416                                uint64_t *addr, uint64_t *flags);
417 int amdgpu_gmc_set_pte_pde(struct amdgpu_device *adev, void *cpu_pt_addr,
418                                 uint32_t gpu_page_idx, uint64_t addr,
419                                 uint64_t flags);
420 uint64_t amdgpu_gmc_pd_addr(struct amdgpu_bo *bo);
421 uint64_t amdgpu_gmc_agp_addr(struct ttm_buffer_object *bo);
422 void amdgpu_gmc_sysvm_location(struct amdgpu_device *adev, struct amdgpu_gmc *mc);
423 void amdgpu_gmc_vram_location(struct amdgpu_device *adev, struct amdgpu_gmc *mc,
424                               u64 base);
425 void amdgpu_gmc_gart_location(struct amdgpu_device *adev,
426                               struct amdgpu_gmc *mc,
427                               enum amdgpu_gart_placement gart_placement);
428 void amdgpu_gmc_agp_location(struct amdgpu_device *adev,
429                              struct amdgpu_gmc *mc);
430 void amdgpu_gmc_set_agp_default(struct amdgpu_device *adev,
431                                 struct amdgpu_gmc *mc);
432 bool amdgpu_gmc_filter_faults(struct amdgpu_device *adev,
433                               struct amdgpu_ih_ring *ih, uint64_t addr,
434                               uint16_t pasid, uint64_t timestamp);
435 void amdgpu_gmc_filter_faults_remove(struct amdgpu_device *adev, uint64_t addr,
436                                      uint16_t pasid);
437 int amdgpu_gmc_ras_sw_init(struct amdgpu_device *adev);
438 int amdgpu_gmc_ras_late_init(struct amdgpu_device *adev);
439 void amdgpu_gmc_ras_fini(struct amdgpu_device *adev);
440 int amdgpu_gmc_allocate_vm_inv_eng(struct amdgpu_device *adev);
441 void amdgpu_gmc_flush_gpu_tlb(struct amdgpu_device *adev, uint32_t vmid,
442                               uint32_t vmhub, uint32_t flush_type);
443 int amdgpu_gmc_flush_gpu_tlb_pasid(struct amdgpu_device *adev, uint16_t pasid,
444                                    uint32_t flush_type, bool all_hub,
445                                    uint32_t inst);
446 void amdgpu_gmc_fw_reg_write_reg_wait(struct amdgpu_device *adev,
447                                       uint32_t reg0, uint32_t reg1,
448                                       uint32_t ref, uint32_t mask,
449                                       uint32_t xcc_inst);
450
451 extern void amdgpu_gmc_tmz_set(struct amdgpu_device *adev);
452 extern void amdgpu_gmc_noretry_set(struct amdgpu_device *adev);
453
454 extern void
455 amdgpu_gmc_set_vm_fault_masks(struct amdgpu_device *adev, int hub_type,
456                               bool enable);
457
458 void amdgpu_gmc_get_vbios_allocations(struct amdgpu_device *adev);
459
460 void amdgpu_gmc_init_pdb0(struct amdgpu_device *adev);
461 uint64_t amdgpu_gmc_vram_mc2pa(struct amdgpu_device *adev, uint64_t mc_addr);
462 uint64_t amdgpu_gmc_vram_pa(struct amdgpu_device *adev, struct amdgpu_bo *bo);
463 int amdgpu_gmc_vram_checking(struct amdgpu_device *adev);
464 int amdgpu_gmc_sysfs_init(struct amdgpu_device *adev);
465 void amdgpu_gmc_sysfs_fini(struct amdgpu_device *adev);
466
467 int amdgpu_gmc_get_nps_memranges(struct amdgpu_device *adev,
468                                  struct amdgpu_mem_partition_info *mem_ranges,
469                                  uint8_t *exp_ranges);
470
471 int amdgpu_gmc_request_memory_partition(struct amdgpu_device *adev,
472                                         int nps_mode);
473 void amdgpu_gmc_prepare_nps_mode_change(struct amdgpu_device *adev);
474 bool amdgpu_gmc_need_reset_on_init(struct amdgpu_device *adev);
475
476 #endif
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