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
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11 * the following conditions:
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15 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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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
27 #include <linux/io-64-nonatomic-lo-hi.h>
29 #include <asm/hypervisor.h>
33 #include "amdgpu_gmc.h"
34 #include "amdgpu_ras.h"
35 #include "amdgpu_reset.h"
36 #include "amdgpu_xgmi.h"
38 #include <drm/drm_drv.h>
39 #include <drm/ttm/ttm_tt.h>
42 * amdgpu_gmc_pdb0_alloc - allocate vram for pdb0
44 * @adev: amdgpu_device pointer
46 * Allocate video memory for pdb0 and map it for CPU access
47 * Returns 0 for success, error for failure.
49 int amdgpu_gmc_pdb0_alloc(struct amdgpu_device *adev)
52 struct amdgpu_bo_param bp;
53 u64 vram_size = adev->gmc.xgmi.node_segment_size * adev->gmc.xgmi.num_physical_nodes;
54 uint32_t pde0_page_shift = adev->gmc.vmid0_page_table_block_size + 21;
55 uint32_t npdes = (vram_size + (1ULL << pde0_page_shift) -1) >> pde0_page_shift;
57 memset(&bp, 0, sizeof(bp));
58 bp.size = PAGE_ALIGN((npdes + 1) * 8);
59 bp.byte_align = PAGE_SIZE;
60 bp.domain = AMDGPU_GEM_DOMAIN_VRAM;
61 bp.flags = AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED |
62 AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS;
63 bp.type = ttm_bo_type_kernel;
65 bp.bo_ptr_size = sizeof(struct amdgpu_bo);
67 r = amdgpu_bo_create(adev, &bp, &adev->gmc.pdb0_bo);
71 r = amdgpu_bo_reserve(adev->gmc.pdb0_bo, false);
73 goto bo_reserve_failure;
75 r = amdgpu_bo_pin(adev->gmc.pdb0_bo, AMDGPU_GEM_DOMAIN_VRAM);
78 r = amdgpu_bo_kmap(adev->gmc.pdb0_bo, &adev->gmc.ptr_pdb0);
82 amdgpu_bo_unreserve(adev->gmc.pdb0_bo);
86 amdgpu_bo_unpin(adev->gmc.pdb0_bo);
88 amdgpu_bo_unreserve(adev->gmc.pdb0_bo);
90 amdgpu_bo_unref(&adev->gmc.pdb0_bo);
95 * amdgpu_gmc_get_pde_for_bo - get the PDE for a BO
97 * @bo: the BO to get the PDE for
98 * @level: the level in the PD hirarchy
99 * @addr: resulting addr
100 * @flags: resulting flags
102 * Get the address and flags to be used for a PDE (Page Directory Entry).
104 void amdgpu_gmc_get_pde_for_bo(struct amdgpu_bo *bo, int level,
105 uint64_t *addr, uint64_t *flags)
107 struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
109 switch (bo->tbo.resource->mem_type) {
111 *addr = bo->tbo.ttm->dma_address[0];
114 *addr = amdgpu_bo_gpu_offset(bo);
120 *flags = amdgpu_ttm_tt_pde_flags(bo->tbo.ttm, bo->tbo.resource);
121 amdgpu_gmc_get_vm_pde(adev, level, addr, flags);
125 * amdgpu_gmc_pd_addr - return the address of the root directory
127 uint64_t amdgpu_gmc_pd_addr(struct amdgpu_bo *bo)
129 struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
132 /* TODO: move that into ASIC specific code */
133 if (adev->asic_type >= CHIP_VEGA10) {
134 uint64_t flags = AMDGPU_PTE_VALID;
136 amdgpu_gmc_get_pde_for_bo(bo, -1, &pd_addr, &flags);
139 pd_addr = amdgpu_bo_gpu_offset(bo);
145 * amdgpu_gmc_set_pte_pde - update the page tables using CPU
147 * @adev: amdgpu_device pointer
148 * @cpu_pt_addr: cpu address of the page table
149 * @gpu_page_idx: entry in the page table to update
150 * @addr: dst addr to write into pte/pde
151 * @flags: access flags
153 * Update the page tables using CPU.
155 int amdgpu_gmc_set_pte_pde(struct amdgpu_device *adev, void *cpu_pt_addr,
156 uint32_t gpu_page_idx, uint64_t addr,
159 void __iomem *ptr = (void *)cpu_pt_addr;
163 * The following is for PTE only. GART does not have PDEs.
165 value = addr & 0x0000FFFFFFFFF000ULL;
167 writeq(value, ptr + (gpu_page_idx * 8));
173 * amdgpu_gmc_agp_addr - return the address in the AGP address space
175 * @bo: TTM BO which needs the address, must be in GTT domain
177 * Tries to figure out how to access the BO through the AGP aperture. Returns
178 * AMDGPU_BO_INVALID_OFFSET if that is not possible.
180 uint64_t amdgpu_gmc_agp_addr(struct ttm_buffer_object *bo)
182 struct amdgpu_device *adev = amdgpu_ttm_adev(bo->bdev);
184 if (bo->ttm->num_pages != 1 || bo->ttm->caching == ttm_cached)
185 return AMDGPU_BO_INVALID_OFFSET;
187 if (bo->ttm->dma_address[0] + PAGE_SIZE >= adev->gmc.agp_size)
188 return AMDGPU_BO_INVALID_OFFSET;
190 return adev->gmc.agp_start + bo->ttm->dma_address[0];
194 * amdgpu_gmc_vram_location - try to find VRAM location
196 * @adev: amdgpu device structure holding all necessary information
197 * @mc: memory controller structure holding memory information
198 * @base: base address at which to put VRAM
200 * Function will try to place VRAM at base address provided
203 void amdgpu_gmc_vram_location(struct amdgpu_device *adev, struct amdgpu_gmc *mc,
206 uint64_t vis_limit = (uint64_t)amdgpu_vis_vram_limit << 20;
207 uint64_t limit = (uint64_t)amdgpu_vram_limit << 20;
209 mc->vram_start = base;
210 mc->vram_end = mc->vram_start + mc->mc_vram_size - 1;
211 if (limit < mc->real_vram_size)
212 mc->real_vram_size = limit;
214 if (vis_limit && vis_limit < mc->visible_vram_size)
215 mc->visible_vram_size = vis_limit;
217 if (mc->real_vram_size < mc->visible_vram_size)
218 mc->visible_vram_size = mc->real_vram_size;
220 if (mc->xgmi.num_physical_nodes == 0) {
221 mc->fb_start = mc->vram_start;
222 mc->fb_end = mc->vram_end;
224 dev_info(adev->dev, "VRAM: %lluM 0x%016llX - 0x%016llX (%lluM used)\n",
225 mc->mc_vram_size >> 20, mc->vram_start,
226 mc->vram_end, mc->real_vram_size >> 20);
229 /** amdgpu_gmc_sysvm_location - place vram and gart in sysvm aperture
231 * @adev: amdgpu device structure holding all necessary information
232 * @mc: memory controller structure holding memory information
234 * This function is only used if use GART for FB translation. In such
235 * case, we use sysvm aperture (vmid0 page tables) for both vram
236 * and gart (aka system memory) access.
238 * GPUVM (and our organization of vmid0 page tables) require sysvm
239 * aperture to be placed at a location aligned with 8 times of native
240 * page size. For example, if vm_context0_cntl.page_table_block_size
241 * is 12, then native page size is 8G (2M*2^12), sysvm should start
242 * with a 64G aligned address. For simplicity, we just put sysvm at
243 * address 0. So vram start at address 0 and gart is right after vram.
245 void amdgpu_gmc_sysvm_location(struct amdgpu_device *adev, struct amdgpu_gmc *mc)
247 u64 hive_vram_start = 0;
248 u64 hive_vram_end = mc->xgmi.node_segment_size * mc->xgmi.num_physical_nodes - 1;
249 mc->vram_start = mc->xgmi.node_segment_size * mc->xgmi.physical_node_id;
250 mc->vram_end = mc->vram_start + mc->xgmi.node_segment_size - 1;
251 mc->gart_start = hive_vram_end + 1;
252 mc->gart_end = mc->gart_start + mc->gart_size - 1;
253 mc->fb_start = hive_vram_start;
254 mc->fb_end = hive_vram_end;
255 dev_info(adev->dev, "VRAM: %lluM 0x%016llX - 0x%016llX (%lluM used)\n",
256 mc->mc_vram_size >> 20, mc->vram_start,
257 mc->vram_end, mc->real_vram_size >> 20);
258 dev_info(adev->dev, "GART: %lluM 0x%016llX - 0x%016llX\n",
259 mc->gart_size >> 20, mc->gart_start, mc->gart_end);
263 * amdgpu_gmc_gart_location - try to find GART location
265 * @adev: amdgpu device structure holding all necessary information
266 * @mc: memory controller structure holding memory information
267 * @gart_placement: GART placement policy with respect to VRAM
269 * Function will place try to place GART before or after VRAM.
270 * If GART size is bigger than space left then we ajust GART size.
271 * Thus function will never fails.
273 void amdgpu_gmc_gart_location(struct amdgpu_device *adev, struct amdgpu_gmc *mc,
274 enum amdgpu_gart_placement gart_placement)
276 const uint64_t four_gb = 0x100000000ULL;
277 u64 size_af, size_bf;
278 /*To avoid the hole, limit the max mc address to AMDGPU_GMC_HOLE_START*/
279 u64 max_mc_address = min(adev->gmc.mc_mask, AMDGPU_GMC_HOLE_START - 1);
281 /* VCE doesn't like it when BOs cross a 4GB segment, so align
282 * the GART base on a 4GB boundary as well.
284 size_bf = mc->fb_start;
285 size_af = max_mc_address + 1 - ALIGN(mc->fb_end + 1, four_gb);
287 if (mc->gart_size > max(size_bf, size_af)) {
288 dev_warn(adev->dev, "limiting GART\n");
289 mc->gart_size = max(size_bf, size_af);
292 switch (gart_placement) {
293 case AMDGPU_GART_PLACEMENT_HIGH:
294 mc->gart_start = max_mc_address - mc->gart_size + 1;
296 case AMDGPU_GART_PLACEMENT_LOW:
299 case AMDGPU_GART_PLACEMENT_BEST_FIT:
301 if ((size_bf >= mc->gart_size && size_bf < size_af) ||
302 (size_af < mc->gart_size))
305 mc->gart_start = max_mc_address - mc->gart_size + 1;
309 mc->gart_start &= ~(four_gb - 1);
310 mc->gart_end = mc->gart_start + mc->gart_size - 1;
311 dev_info(adev->dev, "GART: %lluM 0x%016llX - 0x%016llX\n",
312 mc->gart_size >> 20, mc->gart_start, mc->gart_end);
316 * amdgpu_gmc_agp_location - try to find AGP location
317 * @adev: amdgpu device structure holding all necessary information
318 * @mc: memory controller structure holding memory information
320 * Function will place try to find a place for the AGP BAR in the MC address
323 * AGP BAR will be assigned the largest available hole in the address space.
324 * Should be called after VRAM and GART locations are setup.
326 void amdgpu_gmc_agp_location(struct amdgpu_device *adev, struct amdgpu_gmc *mc)
328 const uint64_t sixteen_gb = 1ULL << 34;
329 const uint64_t sixteen_gb_mask = ~(sixteen_gb - 1);
330 u64 size_af, size_bf;
332 if (mc->fb_start > mc->gart_start) {
333 size_bf = (mc->fb_start & sixteen_gb_mask) -
334 ALIGN(mc->gart_end + 1, sixteen_gb);
335 size_af = mc->mc_mask + 1 - ALIGN(mc->fb_end + 1, sixteen_gb);
337 size_bf = mc->fb_start & sixteen_gb_mask;
338 size_af = (mc->gart_start & sixteen_gb_mask) -
339 ALIGN(mc->fb_end + 1, sixteen_gb);
342 if (size_bf > size_af) {
343 mc->agp_start = (mc->fb_start - size_bf) & sixteen_gb_mask;
344 mc->agp_size = size_bf;
346 mc->agp_start = ALIGN(mc->fb_end + 1, sixteen_gb);
347 mc->agp_size = size_af;
350 mc->agp_end = mc->agp_start + mc->agp_size - 1;
351 dev_info(adev->dev, "AGP: %lluM 0x%016llX - 0x%016llX\n",
352 mc->agp_size >> 20, mc->agp_start, mc->agp_end);
356 * amdgpu_gmc_set_agp_default - Set the default AGP aperture value.
357 * @adev: amdgpu device structure holding all necessary information
358 * @mc: memory controller structure holding memory information
360 * To disable the AGP aperture, you need to set the start to a larger
361 * value than the end. This function sets the default value which
362 * can then be overridden using amdgpu_gmc_agp_location() if you want
363 * to enable the AGP aperture on a specific chip.
366 void amdgpu_gmc_set_agp_default(struct amdgpu_device *adev,
367 struct amdgpu_gmc *mc)
369 mc->agp_start = 0xffffffffffff;
375 * amdgpu_gmc_fault_key - get hask key from vm fault address and pasid
377 * @addr: 48 bit physical address, page aligned (36 significant bits)
378 * @pasid: 16 bit process address space identifier
380 static inline uint64_t amdgpu_gmc_fault_key(uint64_t addr, uint16_t pasid)
382 return addr << 4 | pasid;
386 * amdgpu_gmc_filter_faults - filter VM faults
388 * @adev: amdgpu device structure
389 * @ih: interrupt ring that the fault received from
390 * @addr: address of the VM fault
391 * @pasid: PASID of the process causing the fault
392 * @timestamp: timestamp of the fault
395 * True if the fault was filtered and should not be processed further.
396 * False if the fault is a new one and needs to be handled.
398 bool amdgpu_gmc_filter_faults(struct amdgpu_device *adev,
399 struct amdgpu_ih_ring *ih, uint64_t addr,
400 uint16_t pasid, uint64_t timestamp)
402 struct amdgpu_gmc *gmc = &adev->gmc;
403 uint64_t stamp, key = amdgpu_gmc_fault_key(addr, pasid);
404 struct amdgpu_gmc_fault *fault;
407 /* Stale retry fault if timestamp goes backward */
408 if (amdgpu_ih_ts_after(timestamp, ih->processed_timestamp))
411 /* If we don't have space left in the ring buffer return immediately */
412 stamp = max(timestamp, AMDGPU_GMC_FAULT_TIMEOUT + 1) -
413 AMDGPU_GMC_FAULT_TIMEOUT;
414 if (gmc->fault_ring[gmc->last_fault].timestamp >= stamp)
417 /* Try to find the fault in the hash */
418 hash = hash_64(key, AMDGPU_GMC_FAULT_HASH_ORDER);
419 fault = &gmc->fault_ring[gmc->fault_hash[hash].idx];
420 while (fault->timestamp >= stamp) {
423 if (atomic64_read(&fault->key) == key) {
425 * if we get a fault which is already present in
426 * the fault_ring and the timestamp of
427 * the fault is after the expired timestamp,
428 * then this is a new fault that needs to be added
429 * into the fault ring.
431 if (fault->timestamp_expiry != 0 &&
432 amdgpu_ih_ts_after(fault->timestamp_expiry,
439 tmp = fault->timestamp;
440 fault = &gmc->fault_ring[fault->next];
442 /* Check if the entry was reused */
443 if (fault->timestamp >= tmp)
447 /* Add the fault to the ring */
448 fault = &gmc->fault_ring[gmc->last_fault];
449 atomic64_set(&fault->key, key);
450 fault->timestamp = timestamp;
452 /* And update the hash */
453 fault->next = gmc->fault_hash[hash].idx;
454 gmc->fault_hash[hash].idx = gmc->last_fault++;
459 * amdgpu_gmc_filter_faults_remove - remove address from VM faults filter
461 * @adev: amdgpu device structure
462 * @addr: address of the VM fault
463 * @pasid: PASID of the process causing the fault
465 * Remove the address from fault filter, then future vm fault on this address
466 * will pass to retry fault handler to recover.
468 void amdgpu_gmc_filter_faults_remove(struct amdgpu_device *adev, uint64_t addr,
471 struct amdgpu_gmc *gmc = &adev->gmc;
472 uint64_t key = amdgpu_gmc_fault_key(addr, pasid);
473 struct amdgpu_ih_ring *ih;
474 struct amdgpu_gmc_fault *fault;
480 if (adev->irq.retry_cam_enabled)
484 /* Get the WPTR of the last entry in IH ring */
485 last_wptr = amdgpu_ih_get_wptr(adev, ih);
486 /* Order wptr with ring data. */
488 /* Get the timetamp of the last entry in IH ring */
489 last_ts = amdgpu_ih_decode_iv_ts(adev, ih, last_wptr, -1);
491 hash = hash_64(key, AMDGPU_GMC_FAULT_HASH_ORDER);
492 fault = &gmc->fault_ring[gmc->fault_hash[hash].idx];
494 if (atomic64_read(&fault->key) == key) {
496 * Update the timestamp when this fault
499 fault->timestamp_expiry = last_ts;
503 tmp = fault->timestamp;
504 fault = &gmc->fault_ring[fault->next];
505 } while (fault->timestamp < tmp);
508 int amdgpu_gmc_ras_sw_init(struct amdgpu_device *adev)
513 r = amdgpu_umc_ras_sw_init(adev);
517 /* mmhub ras block */
518 r = amdgpu_mmhub_ras_sw_init(adev);
523 r = amdgpu_hdp_ras_sw_init(adev);
527 /* mca.x ras block */
528 r = amdgpu_mca_mp0_ras_sw_init(adev);
532 r = amdgpu_mca_mp1_ras_sw_init(adev);
536 r = amdgpu_mca_mpio_ras_sw_init(adev);
541 r = amdgpu_xgmi_ras_sw_init(adev);
548 int amdgpu_gmc_ras_late_init(struct amdgpu_device *adev)
553 void amdgpu_gmc_ras_fini(struct amdgpu_device *adev)
559 * The latest engine allocation on gfx9/10 is:
560 * Engine 2, 3: firmware
561 * Engine 0, 1, 4~16: amdgpu ring,
562 * subject to change when ring number changes
563 * Engine 17: Gart flushes
565 #define AMDGPU_VMHUB_INV_ENG_BITMAP 0x1FFF3
567 int amdgpu_gmc_allocate_vm_inv_eng(struct amdgpu_device *adev)
569 struct amdgpu_ring *ring;
570 unsigned vm_inv_engs[AMDGPU_MAX_VMHUBS] = {0};
572 unsigned vmhub, inv_eng;
574 /* init the vm inv eng for all vmhubs */
575 for_each_set_bit(i, adev->vmhubs_mask, AMDGPU_MAX_VMHUBS) {
576 vm_inv_engs[i] = AMDGPU_VMHUB_INV_ENG_BITMAP;
577 /* reserve engine 5 for firmware */
578 if (adev->enable_mes)
579 vm_inv_engs[i] &= ~(1 << 5);
580 /* reserve mmhub engine 3 for firmware */
581 if (adev->enable_umsch_mm)
582 vm_inv_engs[i] &= ~(1 << 3);
585 for (i = 0; i < adev->num_rings; ++i) {
586 ring = adev->rings[i];
587 vmhub = ring->vm_hub;
589 if (ring == &adev->mes.ring ||
590 ring == &adev->umsch_mm.ring)
593 inv_eng = ffs(vm_inv_engs[vmhub]);
595 dev_err(adev->dev, "no VM inv eng for ring %s\n",
600 ring->vm_inv_eng = inv_eng - 1;
601 vm_inv_engs[vmhub] &= ~(1 << ring->vm_inv_eng);
603 dev_info(adev->dev, "ring %s uses VM inv eng %u on hub %u\n",
604 ring->name, ring->vm_inv_eng, ring->vm_hub);
610 void amdgpu_gmc_flush_gpu_tlb(struct amdgpu_device *adev, uint32_t vmid,
611 uint32_t vmhub, uint32_t flush_type)
613 struct amdgpu_ring *ring = adev->mman.buffer_funcs_ring;
614 struct amdgpu_vmhub *hub = &adev->vmhub[vmhub];
615 struct dma_fence *fence;
616 struct amdgpu_job *job;
619 if (!hub->sdma_invalidation_workaround || vmid ||
620 !adev->mman.buffer_funcs_enabled ||
621 !adev->ib_pool_ready || amdgpu_in_reset(adev) ||
622 !ring->sched.ready) {
625 * A GPU reset should flush all TLBs anyway, so no need to do
626 * this while one is ongoing.
628 if (!down_read_trylock(&adev->reset_domain->sem))
631 if (adev->gmc.flush_tlb_needs_extra_type_2)
632 adev->gmc.gmc_funcs->flush_gpu_tlb(adev, vmid,
635 if (adev->gmc.flush_tlb_needs_extra_type_0 && flush_type == 2)
636 adev->gmc.gmc_funcs->flush_gpu_tlb(adev, vmid,
639 adev->gmc.gmc_funcs->flush_gpu_tlb(adev, vmid, vmhub,
641 up_read(&adev->reset_domain->sem);
645 /* The SDMA on Navi 1x has a bug which can theoretically result in memory
646 * corruption if an invalidation happens at the same time as an VA
647 * translation. Avoid this by doing the invalidation from the SDMA
648 * itself at least for GART.
650 mutex_lock(&adev->mman.gtt_window_lock);
651 r = amdgpu_job_alloc_with_ib(ring->adev, &adev->mman.high_pr,
652 AMDGPU_FENCE_OWNER_UNDEFINED,
653 16 * 4, AMDGPU_IB_POOL_IMMEDIATE,
658 job->vm_pd_addr = amdgpu_gmc_pd_addr(adev->gart.bo);
659 job->vm_needs_flush = true;
660 job->ibs->ptr[job->ibs->length_dw++] = ring->funcs->nop;
661 amdgpu_ring_pad_ib(ring, &job->ibs[0]);
662 fence = amdgpu_job_submit(job);
663 mutex_unlock(&adev->mman.gtt_window_lock);
665 dma_fence_wait(fence, false);
666 dma_fence_put(fence);
671 mutex_unlock(&adev->mman.gtt_window_lock);
672 dev_err(adev->dev, "Error flushing GPU TLB using the SDMA (%d)!\n", r);
675 int amdgpu_gmc_flush_gpu_tlb_pasid(struct amdgpu_device *adev, uint16_t pasid,
676 uint32_t flush_type, bool all_hub,
679 u32 usec_timeout = amdgpu_sriov_vf(adev) ? SRIOV_USEC_TIMEOUT :
681 struct amdgpu_ring *ring = &adev->gfx.kiq[inst].ring;
682 struct amdgpu_kiq *kiq = &adev->gfx.kiq[inst];
687 if (!adev->gmc.flush_pasid_uses_kiq || !ring->sched.ready ||
688 !down_read_trylock(&adev->reset_domain->sem)) {
690 if (adev->gmc.flush_tlb_needs_extra_type_2)
691 adev->gmc.gmc_funcs->flush_gpu_tlb_pasid(adev, pasid,
695 if (adev->gmc.flush_tlb_needs_extra_type_0 && flush_type == 2)
696 adev->gmc.gmc_funcs->flush_gpu_tlb_pasid(adev, pasid,
700 adev->gmc.gmc_funcs->flush_gpu_tlb_pasid(adev, pasid,
706 /* 2 dwords flush + 8 dwords fence */
707 ndw = kiq->pmf->invalidate_tlbs_size + 8;
709 if (adev->gmc.flush_tlb_needs_extra_type_2)
710 ndw += kiq->pmf->invalidate_tlbs_size;
712 if (adev->gmc.flush_tlb_needs_extra_type_0)
713 ndw += kiq->pmf->invalidate_tlbs_size;
715 spin_lock(&adev->gfx.kiq[inst].ring_lock);
716 amdgpu_ring_alloc(ring, ndw);
717 if (adev->gmc.flush_tlb_needs_extra_type_2)
718 kiq->pmf->kiq_invalidate_tlbs(ring, pasid, 2, all_hub);
720 if (flush_type == 2 && adev->gmc.flush_tlb_needs_extra_type_0)
721 kiq->pmf->kiq_invalidate_tlbs(ring, pasid, 0, all_hub);
723 kiq->pmf->kiq_invalidate_tlbs(ring, pasid, flush_type, all_hub);
724 r = amdgpu_fence_emit_polling(ring, &seq, MAX_KIQ_REG_WAIT);
726 amdgpu_ring_undo(ring);
727 spin_unlock(&adev->gfx.kiq[inst].ring_lock);
728 goto error_unlock_reset;
731 amdgpu_ring_commit(ring);
732 spin_unlock(&adev->gfx.kiq[inst].ring_lock);
733 r = amdgpu_fence_wait_polling(ring, seq, usec_timeout);
735 dev_err(adev->dev, "wait for kiq fence error: %ld.\n", r);
737 goto error_unlock_reset;
742 up_read(&adev->reset_domain->sem);
747 * amdgpu_gmc_tmz_set -- check and set if a device supports TMZ
748 * @adev: amdgpu_device pointer
750 * Check and set if an the device @adev supports Trusted Memory
753 void amdgpu_gmc_tmz_set(struct amdgpu_device *adev)
755 switch (amdgpu_ip_version(adev, GC_HWIP, 0)) {
757 case IP_VERSION(9, 2, 2):
758 case IP_VERSION(9, 1, 0):
759 /* RENOIR looks like RAVEN */
760 case IP_VERSION(9, 3, 0):
762 case IP_VERSION(10, 3, 7):
764 case IP_VERSION(11, 0, 1):
765 if (amdgpu_tmz == 0) {
766 adev->gmc.tmz_enabled = false;
768 "Trusted Memory Zone (TMZ) feature disabled (cmd line)\n");
770 adev->gmc.tmz_enabled = true;
772 "Trusted Memory Zone (TMZ) feature enabled\n");
775 case IP_VERSION(10, 1, 10):
776 case IP_VERSION(10, 1, 1):
777 case IP_VERSION(10, 1, 2):
778 case IP_VERSION(10, 1, 3):
779 case IP_VERSION(10, 3, 0):
780 case IP_VERSION(10, 3, 2):
781 case IP_VERSION(10, 3, 4):
782 case IP_VERSION(10, 3, 5):
783 case IP_VERSION(10, 3, 6):
785 case IP_VERSION(10, 3, 1):
787 case IP_VERSION(10, 3, 3):
788 case IP_VERSION(11, 0, 4):
789 case IP_VERSION(11, 5, 0):
790 /* Don't enable it by default yet.
792 if (amdgpu_tmz < 1) {
793 adev->gmc.tmz_enabled = false;
795 "Trusted Memory Zone (TMZ) feature disabled as experimental (default)\n");
797 adev->gmc.tmz_enabled = true;
799 "Trusted Memory Zone (TMZ) feature enabled as experimental (cmd line)\n");
803 adev->gmc.tmz_enabled = false;
805 "Trusted Memory Zone (TMZ) feature not supported\n");
811 * amdgpu_gmc_noretry_set -- set per asic noretry defaults
812 * @adev: amdgpu_device pointer
814 * Set a per asic default for the no-retry parameter.
817 void amdgpu_gmc_noretry_set(struct amdgpu_device *adev)
819 struct amdgpu_gmc *gmc = &adev->gmc;
820 uint32_t gc_ver = amdgpu_ip_version(adev, GC_HWIP, 0);
821 bool noretry_default = (gc_ver == IP_VERSION(9, 0, 1) ||
822 gc_ver == IP_VERSION(9, 3, 0) ||
823 gc_ver == IP_VERSION(9, 4, 0) ||
824 gc_ver == IP_VERSION(9, 4, 1) ||
825 gc_ver == IP_VERSION(9, 4, 2) ||
826 gc_ver == IP_VERSION(9, 4, 3) ||
827 gc_ver >= IP_VERSION(10, 3, 0));
829 gmc->noretry = (amdgpu_noretry == -1) ? noretry_default : amdgpu_noretry;
832 void amdgpu_gmc_set_vm_fault_masks(struct amdgpu_device *adev, int hub_type,
835 struct amdgpu_vmhub *hub;
838 hub = &adev->vmhub[hub_type];
839 for (i = 0; i < 16; i++) {
840 reg = hub->vm_context0_cntl + hub->ctx_distance * i;
842 tmp = (hub_type == AMDGPU_GFXHUB(0)) ?
843 RREG32_SOC15_IP(GC, reg) :
844 RREG32_SOC15_IP(MMHUB, reg);
847 tmp |= hub->vm_cntx_cntl_vm_fault;
849 tmp &= ~hub->vm_cntx_cntl_vm_fault;
851 (hub_type == AMDGPU_GFXHUB(0)) ?
852 WREG32_SOC15_IP(GC, reg, tmp) :
853 WREG32_SOC15_IP(MMHUB, reg, tmp);
857 void amdgpu_gmc_get_vbios_allocations(struct amdgpu_device *adev)
862 * Some ASICs need to reserve a region of video memory to avoid access
865 adev->mman.stolen_reserved_offset = 0;
866 adev->mman.stolen_reserved_size = 0;
870 * Currently there is a bug where some memory client outside
871 * of the driver writes to first 8M of VRAM on S3 resume,
872 * this overrides GART which by default gets placed in first 8M and
873 * causes VM_FAULTS once GTT is accessed.
874 * Keep the stolen memory reservation until the while this is not solved.
876 switch (adev->asic_type) {
878 adev->mman.keep_stolen_vga_memory = true;
880 * VEGA10 SRIOV VF with MS_HYPERV host needs some firmware reserved area.
883 if (amdgpu_sriov_vf(adev) && hypervisor_is_type(X86_HYPER_MS_HYPERV)) {
884 adev->mman.stolen_reserved_offset = 0x500000;
885 adev->mman.stolen_reserved_size = 0x200000;
891 adev->mman.keep_stolen_vga_memory = true;
894 adev->mman.keep_stolen_vga_memory = false;
898 if (amdgpu_sriov_vf(adev) ||
899 !amdgpu_device_has_display_hardware(adev)) {
902 size = amdgpu_gmc_get_vbios_fb_size(adev);
904 if (adev->mman.keep_stolen_vga_memory)
905 size = max(size, (unsigned)AMDGPU_VBIOS_VGA_ALLOCATION);
908 /* set to 0 if the pre-OS buffer uses up most of vram */
909 if ((adev->gmc.real_vram_size - size) < (8 * 1024 * 1024))
912 if (size > AMDGPU_VBIOS_VGA_ALLOCATION) {
913 adev->mman.stolen_vga_size = AMDGPU_VBIOS_VGA_ALLOCATION;
914 adev->mman.stolen_extended_size = size - adev->mman.stolen_vga_size;
916 adev->mman.stolen_vga_size = size;
917 adev->mman.stolen_extended_size = 0;
922 * amdgpu_gmc_init_pdb0 - initialize PDB0
924 * @adev: amdgpu_device pointer
926 * This function is only used when GART page table is used
927 * for FB address translatioin. In such a case, we construct
928 * a 2-level system VM page table: PDB0->PTB, to cover both
929 * VRAM of the hive and system memory.
931 * PDB0 is static, initialized once on driver initialization.
932 * The first n entries of PDB0 are used as PTE by setting
933 * P bit to 1, pointing to VRAM. The n+1'th entry points
934 * to a big PTB covering system memory.
937 void amdgpu_gmc_init_pdb0(struct amdgpu_device *adev)
940 uint64_t flags = adev->gart.gart_pte_flags; //TODO it is UC. explore NC/RW?
941 /* Each PDE0 (used as PTE) covers (2^vmid0_page_table_block_size)*2M
943 u64 vram_size = adev->gmc.xgmi.node_segment_size * adev->gmc.xgmi.num_physical_nodes;
944 u64 pde0_page_size = (1ULL<<adev->gmc.vmid0_page_table_block_size)<<21;
945 u64 vram_addr = adev->vm_manager.vram_base_offset -
946 adev->gmc.xgmi.physical_node_id * adev->gmc.xgmi.node_segment_size;
947 u64 vram_end = vram_addr + vram_size;
948 u64 gart_ptb_gpu_pa = amdgpu_gmc_vram_pa(adev, adev->gart.bo);
951 if (!drm_dev_enter(adev_to_drm(adev), &idx))
954 flags |= AMDGPU_PTE_VALID | AMDGPU_PTE_READABLE;
955 flags |= AMDGPU_PTE_WRITEABLE;
956 flags |= AMDGPU_PTE_SNOOPED;
957 flags |= AMDGPU_PTE_FRAG((adev->gmc.vmid0_page_table_block_size + 9*1));
958 flags |= AMDGPU_PDE_PTE;
960 /* The first n PDE0 entries are used as PTE,
963 for (i = 0; vram_addr < vram_end; i++, vram_addr += pde0_page_size)
964 amdgpu_gmc_set_pte_pde(adev, adev->gmc.ptr_pdb0, i, vram_addr, flags);
966 /* The n+1'th PDE0 entry points to a huge
967 * PTB who has more than 512 entries each
968 * pointing to a 4K system page
970 flags = AMDGPU_PTE_VALID;
971 flags |= AMDGPU_PDE_BFS(0) | AMDGPU_PTE_SNOOPED;
972 /* Requires gart_ptb_gpu_pa to be 4K aligned */
973 amdgpu_gmc_set_pte_pde(adev, adev->gmc.ptr_pdb0, i, gart_ptb_gpu_pa, flags);
978 * amdgpu_gmc_vram_mc2pa - calculate vram buffer's physical address from MC
981 * @adev: amdgpu_device pointer
982 * @mc_addr: MC address of buffer
984 uint64_t amdgpu_gmc_vram_mc2pa(struct amdgpu_device *adev, uint64_t mc_addr)
986 return mc_addr - adev->gmc.vram_start + adev->vm_manager.vram_base_offset;
990 * amdgpu_gmc_vram_pa - calculate vram buffer object's physical address from
993 * @adev: amdgpu_device pointer
994 * @bo: amdgpu buffer object
996 uint64_t amdgpu_gmc_vram_pa(struct amdgpu_device *adev, struct amdgpu_bo *bo)
998 return amdgpu_gmc_vram_mc2pa(adev, amdgpu_bo_gpu_offset(bo));
1002 * amdgpu_gmc_vram_cpu_pa - calculate vram buffer object's physical address
1005 * @adev: amdgpu_device pointer
1006 * @bo: amdgpu buffer object
1008 uint64_t amdgpu_gmc_vram_cpu_pa(struct amdgpu_device *adev, struct amdgpu_bo *bo)
1010 return amdgpu_bo_gpu_offset(bo) - adev->gmc.vram_start + adev->gmc.aper_base;
1013 int amdgpu_gmc_vram_checking(struct amdgpu_device *adev)
1015 struct amdgpu_bo *vram_bo = NULL;
1016 uint64_t vram_gpu = 0;
1017 void *vram_ptr = NULL;
1019 int ret, size = 0x100000;
1022 ret = amdgpu_bo_create_kernel(adev, size, PAGE_SIZE,
1023 AMDGPU_GEM_DOMAIN_VRAM,
1030 memset(vram_ptr, 0x86, size);
1031 memset(cptr, 0x86, 10);
1034 * Check the start, the mid, and the end of the memory if the content of
1035 * each byte is the pattern "0x86". If yes, we suppose the vram bo is
1038 * Note: If check the each byte of whole 1M bo, it will cost too many
1039 * seconds, so here, we just pick up three parts for emulation.
1041 ret = memcmp(vram_ptr, cptr, 10);
1045 ret = memcmp(vram_ptr + (size / 2), cptr, 10);
1049 ret = memcmp(vram_ptr + size - 10, cptr, 10);
1053 amdgpu_bo_free_kernel(&vram_bo, &vram_gpu,
1059 static ssize_t current_memory_partition_show(
1060 struct device *dev, struct device_attribute *addr, char *buf)
1062 struct drm_device *ddev = dev_get_drvdata(dev);
1063 struct amdgpu_device *adev = drm_to_adev(ddev);
1064 enum amdgpu_memory_partition mode;
1066 mode = adev->gmc.gmc_funcs->query_mem_partition_mode(adev);
1068 case AMDGPU_NPS1_PARTITION_MODE:
1069 return sysfs_emit(buf, "NPS1\n");
1070 case AMDGPU_NPS2_PARTITION_MODE:
1071 return sysfs_emit(buf, "NPS2\n");
1072 case AMDGPU_NPS3_PARTITION_MODE:
1073 return sysfs_emit(buf, "NPS3\n");
1074 case AMDGPU_NPS4_PARTITION_MODE:
1075 return sysfs_emit(buf, "NPS4\n");
1076 case AMDGPU_NPS6_PARTITION_MODE:
1077 return sysfs_emit(buf, "NPS6\n");
1078 case AMDGPU_NPS8_PARTITION_MODE:
1079 return sysfs_emit(buf, "NPS8\n");
1081 return sysfs_emit(buf, "UNKNOWN\n");
1084 return sysfs_emit(buf, "UNKNOWN\n");
1087 static DEVICE_ATTR_RO(current_memory_partition);
1089 int amdgpu_gmc_sysfs_init(struct amdgpu_device *adev)
1091 if (!adev->gmc.gmc_funcs->query_mem_partition_mode)
1094 return device_create_file(adev->dev,
1095 &dev_attr_current_memory_partition);
1098 void amdgpu_gmc_sysfs_fini(struct amdgpu_device *adev)
1100 device_remove_file(adev->dev, &dev_attr_current_memory_partition);