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