diff options
Diffstat (limited to 'drivers/gpu/drm/amd')
-rw-r--r-- | drivers/gpu/drm/amd/amdgpu/Makefile | 3 | ||||
-rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v7.c | 4 | ||||
-rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c | 4 | ||||
-rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c | 3 | ||||
-rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_ids.c | 459 | ||||
-rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_ids.h | 91 | ||||
-rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_job.c | 6 | ||||
-rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 422 | ||||
-rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h | 44 | ||||
-rw-r--r-- | drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c | 2 | ||||
-rw-r--r-- | drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c | 2 | ||||
-rw-r--r-- | drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c | 2 | ||||
-rw-r--r-- | drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 2 |
13 files changed, 579 insertions, 465 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/Makefile b/drivers/gpu/drm/amd/amdgpu/Makefile index d8da12c114b1..d6e5b7273853 100644 --- a/drivers/gpu/drm/amd/amdgpu/Makefile +++ b/drivers/gpu/drm/amd/amdgpu/Makefile @@ -52,7 +52,8 @@ amdgpu-y += amdgpu_device.o amdgpu_kms.o \ amdgpu_prime.o amdgpu_vm.o amdgpu_ib.o amdgpu_pll.o \ amdgpu_ucode.o amdgpu_bo_list.o amdgpu_ctx.o amdgpu_sync.o \ amdgpu_gtt_mgr.o amdgpu_vram_mgr.o amdgpu_virt.o amdgpu_atomfirmware.o \ - amdgpu_queue_mgr.o amdgpu_vf_error.o amdgpu_sched.o amdgpu_debugfs.o + amdgpu_queue_mgr.o amdgpu_vf_error.o amdgpu_sched.o amdgpu_debugfs.o \ + amdgpu_ids.o # add asic specific block amdgpu-$(CONFIG_DRM_AMDGPU_CIK)+= cik.o cik_ih.o kv_smc.o kv_dpm.o \ diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v7.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v7.c index 1e3e9be7d77e..1ae149456c9f 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v7.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v7.c @@ -169,8 +169,8 @@ static const struct kfd2kgd_calls kfd2kgd = { .get_vmem_size = get_vmem_size, .get_gpu_clock_counter = get_gpu_clock_counter, .get_max_engine_clock_in_mhz = get_max_engine_clock_in_mhz, - .alloc_pasid = amdgpu_vm_alloc_pasid, - .free_pasid = amdgpu_vm_free_pasid, + .alloc_pasid = amdgpu_pasid_alloc, + .free_pasid = amdgpu_pasid_free, .program_sh_mem_settings = kgd_program_sh_mem_settings, .set_pasid_vmid_mapping = kgd_set_pasid_vmid_mapping, .init_pipeline = kgd_init_pipeline, diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c index 056929b8ccd0..e9b436bc8dcb 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c @@ -128,8 +128,8 @@ static const struct kfd2kgd_calls kfd2kgd = { .get_vmem_size = get_vmem_size, .get_gpu_clock_counter = get_gpu_clock_counter, .get_max_engine_clock_in_mhz = get_max_engine_clock_in_mhz, - .alloc_pasid = amdgpu_vm_alloc_pasid, - .free_pasid = amdgpu_vm_free_pasid, + .alloc_pasid = amdgpu_pasid_alloc, + .free_pasid = amdgpu_pasid_free, .program_sh_mem_settings = kgd_program_sh_mem_settings, .set_pasid_vmid_mapping = kgd_set_pasid_vmid_mapping, .init_pipeline = kgd_init_pipeline, diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c index 0cf86eb357d6..03a69942cce5 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c @@ -230,8 +230,7 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned num_ibs, if (r) { dev_err(adev->dev, "failed to emit fence (%d)\n", r); if (job && job->vm_id) - amdgpu_vm_reset_id(adev, ring->funcs->vmhub, - job->vm_id); + amdgpu_vmid_reset(adev, ring->funcs->vmhub, job->vm_id); amdgpu_ring_undo(ring); return r; } diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ids.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ids.c new file mode 100644 index 000000000000..71f8a76d4c10 --- /dev/null +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ids.c @@ -0,0 +1,459 @@ +/* + * Copyright 2017 Advanced Micro Devices, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + */ +#include "amdgpu_ids.h" + +#include <linux/idr.h> +#include <linux/dma-fence-array.h> +#include <drm/drmP.h> + +#include "amdgpu.h" +#include "amdgpu_trace.h" + +/* + * PASID manager + * + * PASIDs are global address space identifiers that can be shared + * between the GPU, an IOMMU and the driver. VMs on different devices + * may use the same PASID if they share the same address + * space. Therefore PASIDs are allocated using a global IDA. VMs are + * looked up from the PASID per amdgpu_device. + */ +static DEFINE_IDA(amdgpu_pasid_ida); + +/** + * amdgpu_pasid_alloc - Allocate a PASID + * @bits: Maximum width of the PASID in bits, must be at least 1 + * + * Allocates a PASID of the given width while keeping smaller PASIDs + * available if possible. + * + * Returns a positive integer on success. Returns %-EINVAL if bits==0. + * Returns %-ENOSPC if no PASID was available. Returns %-ENOMEM on + * memory allocation failure. + */ +int amdgpu_pasid_alloc(unsigned int bits) +{ + int pasid = -EINVAL; + + for (bits = min(bits, 31U); bits > 0; bits--) { + pasid = ida_simple_get(&amdgpu_pasid_ida, + 1U << (bits - 1), 1U << bits, + GFP_KERNEL); + if (pasid != -ENOSPC) + break; + } + + return pasid; +} + +/** + * amdgpu_pasid_free - Free a PASID + * @pasid: PASID to free + */ +void amdgpu_pasid_free(unsigned int pasid) +{ + ida_simple_remove(&amdgpu_pasid_ida, pasid); +} + +/* + * VMID manager + * + * VMIDs are a per VMHUB identifier for page tables handling. + */ + +/** + * amdgpu_vmid_had_gpu_reset - check if reset occured since last use + * + * @adev: amdgpu_device pointer + * @id: VMID structure + * + * Check if GPU reset occured since last use of the VMID. + */ +bool amdgpu_vmid_had_gpu_reset(struct amdgpu_device *adev, + struct amdgpu_vmid *id) +{ + return id->current_gpu_reset_count != + atomic_read(&adev->gpu_reset_counter); +} + +/* idr_mgr->lock must be held */ +static int amdgpu_vmid_grab_reserved_locked(struct amdgpu_vm *vm, + struct amdgpu_ring *ring, + struct amdgpu_sync *sync, + struct dma_fence *fence, + struct amdgpu_job *job) +{ + struct amdgpu_device *adev = ring->adev; + unsigned vmhub = ring->funcs->vmhub; + uint64_t fence_context = adev->fence_context + ring->idx; + struct amdgpu_vmid *id = vm->reserved_vmid[vmhub]; + struct amdgpu_vmid_mgr *id_mgr = &adev->vm_manager.id_mgr[vmhub]; + struct dma_fence *updates = sync->last_vm_update; + int r = 0; + struct dma_fence *flushed, *tmp; + bool needs_flush = vm->use_cpu_for_update; + + flushed = id->flushed_updates; + if ((amdgpu_vmid_had_gpu_reset(adev, id)) || + (atomic64_read(&id->owner) != vm->client_id) || + (job->vm_pd_addr != id->pd_gpu_addr) || + (updates && (!flushed || updates->context != flushed->context || + dma_fence_is_later(updates, flushed))) || + (!id->last_flush || (id->last_flush->context != fence_context && + !dma_fence_is_signaled(id->last_flush)))) { + needs_flush = true; + /* to prevent one context starved by another context */ + id->pd_gpu_addr = 0; + tmp = amdgpu_sync_peek_fence(&id->active, ring); + if (tmp) { + r = amdgpu_sync_fence(adev, sync, tmp, false); + return r; + } + } + + /* Good we can use this VMID. Remember this submission as + * user of the VMID. + */ + r = amdgpu_sync_fence(ring->adev, &id->active, fence, false); + if (r) + goto out; + + if (updates && (!flushed || updates->context != flushed->context || + dma_fence_is_later(updates, flushed))) { + dma_fence_put(id->flushed_updates); + id->flushed_updates = dma_fence_get(updates); + } + id->pd_gpu_addr = job->vm_pd_addr; + atomic64_set(&id->owner, vm->client_id); + job->vm_needs_flush = needs_flush; + if (needs_flush) { + dma_fence_put(id->last_flush); + id->last_flush = NULL; + } + job->vm_id = id - id_mgr->ids; + trace_amdgpu_vm_grab_id(vm, ring, job); +out: + return r; +} + +/** + * amdgpu_vm_grab_id - allocate the next free VMID + * + * @vm: vm to allocate id for + * @ring: ring we want to submit job to + * @sync: sync object where we add dependencies + * @fence: fence protecting ID from reuse + * + * Allocate an id for the vm, adding fences to the sync obj as necessary. + */ +int amdgpu_vmid_grab(struct amdgpu_vm *vm, struct amdgpu_ring *ring, + struct amdgpu_sync *sync, struct dma_fence *fence, + struct amdgpu_job *job) +{ + struct amdgpu_device *adev = ring->adev; + unsigned vmhub = ring->funcs->vmhub; + struct amdgpu_vmid_mgr *id_mgr = &adev->vm_manager.id_mgr[vmhub]; + uint64_t fence_context = adev->fence_context + ring->idx; + struct dma_fence *updates = sync->last_vm_update; + struct amdgpu_vmid *id, *idle; + struct dma_fence **fences; + unsigned i; + int r = 0; + + mutex_lock(&id_mgr->lock); + if (vm->reserved_vmid[vmhub]) { + r = amdgpu_vmid_grab_reserved_locked(vm, ring, sync, fence, job); + mutex_unlock(&id_mgr->lock); + return r; + } + fences = kmalloc_array(sizeof(void *), id_mgr->num_ids, GFP_KERNEL); + if (!fences) { + mutex_unlock(&id_mgr->lock); + return -ENOMEM; + } + /* Check if we have an idle VMID */ + i = 0; + list_for_each_entry(idle, &id_mgr->ids_lru, list) { + fences[i] = amdgpu_sync_peek_fence(&idle->active, ring); + if (!fences[i]) + break; + ++i; + } + + /* If we can't find a idle VMID to use, wait till one becomes available */ + if (&idle->list == &id_mgr->ids_lru) { + u64 fence_context = adev->vm_manager.fence_context + ring->idx; + unsigned seqno = ++adev->vm_manager.seqno[ring->idx]; + struct dma_fence_array *array; + unsigned j; + + for (j = 0; j < i; ++j) + dma_fence_get(fences[j]); + + array = dma_fence_array_create(i, fences, fence_context, + seqno, true); + if (!array) { + for (j = 0; j < i; ++j) + dma_fence_put(fences[j]); + kfree(fences); + r = -ENOMEM; + goto error; + } + + + r = amdgpu_sync_fence(ring->adev, sync, &array->base, false); + dma_fence_put(&array->base); + if (r) + goto error; + + mutex_unlock(&id_mgr->lock); + return 0; + + } + kfree(fences); + + job->vm_needs_flush = vm->use_cpu_for_update; + /* Check if we can use a VMID already assigned to this VM */ + list_for_each_entry_reverse(id, &id_mgr->ids_lru, list) { + struct dma_fence *flushed; + bool needs_flush = vm->use_cpu_for_update; + + /* Check all the prerequisites to using this VMID */ + if (amdgpu_vmid_had_gpu_reset(adev, id)) + continue; + + if (atomic64_read(&id->owner) != vm->client_id) + continue; + + if (job->vm_pd_addr != id->pd_gpu_addr) + continue; + + if (!id->last_flush || + (id->last_flush->context != fence_context && + !dma_fence_is_signaled(id->last_flush))) + needs_flush = true; + + flushed = id->flushed_updates; + if (updates && (!flushed || dma_fence_is_later(updates, flushed))) + needs_flush = true; + + /* Concurrent flushes are only possible starting with Vega10 */ + if (adev->asic_type < CHIP_VEGA10 && needs_flush) + continue; + + /* Good we can use this VMID. Remember this submission as + * user of the VMID. + */ + r = amdgpu_sync_fence(ring->adev, &id->active, fence, false); + if (r) + goto error; + + if (updates && (!flushed || dma_fence_is_later(updates, flushed))) { + dma_fence_put(id->flushed_updates); + id->flushed_updates = dma_fence_get(updates); + } + + if (needs_flush) + goto needs_flush; + else + goto no_flush_needed; + + }; + + /* Still no ID to use? Then use the idle one found earlier */ + id = idle; + + /* Remember this submission as user of the VMID */ + r = amdgpu_sync_fence(ring->adev, &id->active, fence, false); + if (r) + goto error; + + id->pd_gpu_addr = job->vm_pd_addr; + dma_fence_put(id->flushed_updates); + id->flushed_updates = dma_fence_get(updates); + atomic64_set(&id->owner, vm->client_id); + +needs_flush: + job->vm_needs_flush = true; + dma_fence_put(id->last_flush); + id->last_flush = NULL; + +no_flush_needed: + list_move_tail(&id->list, &id_mgr->ids_lru); + + job->vm_id = id - id_mgr->ids; + trace_amdgpu_vm_grab_id(vm, ring, job); + +error: + mutex_unlock(&id_mgr->lock); + return r; +} + +int amdgpu_vmid_alloc_reserved(struct amdgpu_device *adev, + struct amdgpu_vm *vm, + unsigned vmhub) +{ + struct amdgpu_vmid_mgr *id_mgr; + struct amdgpu_vmid *idle; + int r = 0; + + id_mgr = &adev->vm_manager.id_mgr[vmhub]; + mutex_lock(&id_mgr->lock); + if (vm->reserved_vmid[vmhub]) + goto unlock; + if (atomic_inc_return(&id_mgr->reserved_vmid_num) > + AMDGPU_VM_MAX_RESERVED_VMID) { + DRM_ERROR("Over limitation of reserved vmid\n"); + atomic_dec(&id_mgr->reserved_vmid_num); + r = -EINVAL; + goto unlock; + } + /* Select the first entry VMID */ + idle = list_first_entry(&id_mgr->ids_lru, struct amdgpu_vmid, list); + list_del_init(&idle->list); + vm->reserved_vmid[vmhub] = idle; + mutex_unlock(&id_mgr->lock); + + return 0; +unlock: + mutex_unlock(&id_mgr->lock); + return r; +} + +void amdgpu_vmid_free_reserved(struct amdgpu_device *adev, + struct amdgpu_vm *vm, + unsigned vmhub) +{ + struct amdgpu_vmid_mgr *id_mgr = &adev->vm_manager.id_mgr[vmhub]; + + mutex_lock(&id_mgr->lock); + if (vm->reserved_vmid[vmhub]) { + list_add(&vm->reserved_vmid[vmhub]->list, + &id_mgr->ids_lru); + vm->reserved_vmid[vmhub] = NULL; + atomic_dec(&id_mgr->reserved_vmid_num); + } + mutex_unlock(&id_mgr->lock); +} + +/** + * amdgpu_vmid_reset - reset VMID to zero + * + * @adev: amdgpu device structure + * @vm_id: vmid number to use + * + * Reset saved GDW, GWS and OA to force switch on next flush. + */ +void amdgpu_vmid_reset(struct amdgpu_device *adev, unsigned vmhub, + unsigned vmid) +{ + struct amdgpu_vmid_mgr *id_mgr = &adev->vm_manager.id_mgr[vmhub]; + struct amdgpu_vmid *id = &id_mgr->ids[vmid]; + + atomic64_set(&id->owner, 0); + id->gds_base = 0; + id->gds_size = 0; + id->gws_base = 0; + id->gws_size = 0; + id->oa_base = 0; + id->oa_size = 0; +} + +/** + * amdgpu_vmid_reset_all - reset VMID to zero + * + * @adev: amdgpu device structure + * + * Reset VMID to force flush on next use + */ +void amdgpu_vmid_reset_all(struct amdgpu_device *adev) +{ + unsigned i, j; + + for (i = 0; i < AMDGPU_MAX_VMHUBS; ++i) { + struct amdgpu_vmid_mgr *id_mgr = + &adev->vm_manager.id_mgr[i]; + + for (j = 1; j < id_mgr->num_ids; ++j) + amdgpu_vmid_reset(adev, i, j); + } +} + +/** + * amdgpu_vmid_mgr_init - init the VMID manager + * + * @adev: amdgpu_device pointer + * + * Initialize the VM manager structures + */ +void amdgpu_vmid_mgr_init(struct amdgpu_device *adev) +{ + unsigned i, j; + + for (i = 0; i < AMDGPU_MAX_VMHUBS; ++i) { + struct amdgpu_vmid_mgr *id_mgr = + &adev->vm_manager.id_mgr[i]; + + mutex_init(&id_mgr->lock); + INIT_LIST_HEAD(&id_mgr->ids_lru); + atomic_set(&id_mgr->reserved_vmid_num, 0); + + /* skip over VMID 0, since it is the system VM */ + for (j = 1; j < id_mgr->num_ids; ++j) { + amdgpu_vmid_reset(adev, i, j); + amdgpu_sync_create(&id_mgr->ids[i].active); + list_add_tail(&id_mgr->ids[j].list, &id_mgr->ids_lru); + } + } + + adev->vm_manager.fence_context = + dma_fence_context_alloc(AMDGPU_MAX_RINGS); + for (i = 0; i < AMDGPU_MAX_RINGS; ++i) + adev->vm_manager.seqno[i] = 0; +} + +/** + * amdgpu_vmid_mgr_fini - cleanup VM manager + * + * @adev: amdgpu_device pointer + * + * Cleanup the VM manager and free resources. + */ +void amdgpu_vmid_mgr_fini(struct amdgpu_device *adev) +{ + unsigned i, j; + + for (i = 0; i < AMDGPU_MAX_VMHUBS; ++i) { + struct amdgpu_vmid_mgr *id_mgr = + &adev->vm_manager.id_mgr[i]; + + mutex_destroy(&id_mgr->lock); + for (j = 0; j < AMDGPU_NUM_VMID; ++j) { + struct amdgpu_vmid *id = &id_mgr->ids[j]; + + amdgpu_sync_free(&id->active); + dma_fence_put(id->flushed_updates); + dma_fence_put(id->last_flush); + } + } +} diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ids.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ids.h new file mode 100644 index 000000000000..ad931fa570b3 --- /dev/null +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ids.h @@ -0,0 +1,91 @@ +/* + * Copyright 2017 Advanced Micro Devices, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + */ +#ifndef __AMDGPU_IDS_H__ +#define __AMDGPU_IDS_H__ + +#include <linux/types.h> +#include <linux/mutex.h> +#include <linux/list.h> +#include <linux/dma-fence.h> + +#include "amdgpu_sync.h" + +/* maximum number of VMIDs */ +#define AMDGPU_NUM_VMID 16 + +struct amdgpu_device; +struct amdgpu_vm; +struct amdgpu_ring; +struct amdgpu_sync; +struct amdgpu_job; + +struct amdgpu_vmid { + struct list_head list; + struct amdgpu_sync active; + struct dma_fence *last_flush; + atomic64_t owner; + + uint64_t pd_gpu_addr; + /* last flushed PD/PT update */ + struct dma_fence *flushed_updates; + + uint32_t current_gpu_reset_count; + + uint32_t gds_base; + uint32_t gds_size; + uint32_t gws_base; + uint32_t gws_size; + uint32_t oa_base; + uint32_t oa_size; +}; + +struct amdgpu_vmid_mgr { + struct mutex lock; + unsigned num_ids; + struct list_head ids_lru; + struct amdgpu_vmid ids[AMDGPU_NUM_VMID]; + atomic_t reserved_vmid_num; +}; + +int amdgpu_pasid_alloc(unsigned int bits); +void amdgpu_pasid_free(unsigned int pasid); + +bool amdgpu_vmid_had_gpu_reset(struct amdgpu_device *adev, + struct amdgpu_vmid *id); +int amdgpu_vmid_alloc_reserved(struct amdgpu_device *adev, + struct amdgpu_vm *vm, + unsigned vmhub); +void amdgpu_vmid_free_reserved(struct amdgpu_device *adev, + struct amdgpu_vm *vm, + unsigned vmhub); +int amdgpu_vmid_grab(struct amdgpu_vm *vm, struct amdgpu_ring *ring, + struct amdgpu_sync *sync, struct dma_fence *fence, + struct amdgpu_job *job); +void amdgpu_vmid_reset(struct amdgpu_device *adev, unsigned vmhub, + unsigned vmid); +void amdgpu_vmid_reset_all(struct amdgpu_device *adev); + +void amdgpu_vmid_mgr_init(struct amdgpu_device *adev); +void amdgpu_vmid_mgr_fini(struct amdgpu_device *adev); + +#endif diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c index 56d9ee5013a9..cdc9e0f5336a 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c @@ -161,9 +161,9 @@ static struct dma_fence *amdgpu_job_dependency(struct drm_sched_job *sched_job, while (fence == NULL && vm && !job->vm_id) { struct amdgpu_ring *ring = job->ring; - r = amdgpu_vm_grab_id(vm, ring, &job->sync, - &job->base.s_fence->finished, - job); + r = amdgpu_vmid_grab(vm, ring, &job->sync, + &job->base.s_fence->finished, + job); if (r) DRM_ERROR("Error getting VM ID (%d)\n", r); diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c index 398abbcbf029..01ee8e2258c8 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -34,52 +34,6 @@ #include "amdgpu_trace.h" /* - * PASID manager - * - * PASIDs are global address space identifiers that can be shared - * between the GPU, an IOMMU and the driver. VMs on different devices - * may use the same PASID if they share the same address - * space. Therefore PASIDs are allocated using a global IDA. VMs are - * looked up from the PASID per amdgpu_device. - */ -static DEFINE_IDA(amdgpu_vm_pasid_ida); - -/** - * amdgpu_vm_alloc_pasid - Allocate a PASID - * @bits: Maximum width of the PASID in bits, must be at least 1 - * - * Allocates a PASID of the given width while keeping smaller PASIDs - * available if possible. - * - * Returns a positive integer on success. Returns %-EINVAL if bits==0. - * Returns %-ENOSPC if no PASID was available. Returns %-ENOMEM on - * memory allocation failure. - */ -int amdgpu_vm_alloc_pasid(unsigned int bits) -{ - int pasid = -EINVAL; - - for (bits = min(bits, 31U); bits > 0; bits--) { - pasid = ida_simple_get(&amdgpu_vm_pasid_ida, - 1U << (bits - 1), 1U << bits, - GFP_KERNEL); - if (pasid != -ENOSPC) - break; - } - - return pasid; -} - -/** - * amdgpu_vm_free_pasid - Free a PASID - * @pasid: PASID to free - */ -void amdgpu_vm_free_pasid(unsigned int pasid) -{ - ida_simple_remove(&amdgpu_vm_pasid_ida, pasid); -} - -/* * GPUVM * GPUVM is similar to the legacy gart on older asics, however * rather than there being a single global gart table @@ -448,286 +402,6 @@ int amdgpu_vm_alloc_pts(struct amdgpu_device *adev, } /** - * amdgpu_vm_had_gpu_reset - check if reset occured since last use - * - * @adev: amdgpu_device pointer - * @id: VMID structure - * - * Check if GPU reset occured since last use of the VMID. - */ -static bool amdgpu_vm_had_gpu_reset(struct amdgpu_device *adev, - struct amdgpu_vm_id *id) -{ - return id->current_gpu_reset_count != - atomic_read(&adev->gpu_reset_counter); -} - -static bool amdgpu_vm_reserved_vmid_ready(struct amdgpu_vm *vm, unsigned vmhub) -{ - return !!vm->reserved_vmid[vmhub]; -} - -/* idr_mgr->lock must be held */ -static int amdgpu_vm_grab_reserved_vmid_locked(struct amdgpu_vm *vm, - struct amdgpu_ring *ring, - struct amdgpu_sync *sync, - struct dma_fence *fence, - struct amdgpu_job *job) -{ - struct amdgpu_device *adev = ring->adev; - unsigned vmhub = ring->funcs->vmhub; - uint64_t fence_context = adev->fence_context + ring->idx; - struct amdgpu_vm_id *id = vm->reserved_vmid[vmhub]; - struct amdgpu_vm_id_manager *id_mgr = &adev->vm_manager.id_mgr[vmhub]; - struct dma_fence *updates = sync->last_vm_update; - int r = 0; - struct dma_fence *flushed, *tmp; - bool needs_flush = vm->use_cpu_for_update; - - flushed = id->flushed_updates; - if ((amdgpu_vm_had_gpu_reset(adev, id)) || - (atomic64_read(&id->owner) != vm->client_id) || - (job->vm_pd_addr != id->pd_gpu_addr) || - (updates && (!flushed || updates->context != flushed->context || - dma_fence_is_later(updates, flushed))) || - (!id->last_flush || (id->last_flush->context != fence_context && - !dma_fence_is_signaled(id->last_flush)))) { - needs_flush = true; - /* to prevent one context starved by another context */ - id->pd_gpu_addr = 0; - tmp = amdgpu_sync_peek_fence(&id->active, ring); - if (tmp) { - r = amdgpu_sync_fence(adev, sync, tmp, false); - return r; - } - } - - /* Good we can use this VMID. Remember this submission as - * user of the VMID. - */ - r = amdgpu_sync_fence(ring->adev, &id->active, fence, false); - if (r) - goto out; - - if (updates && (!flushed || updates->context != flushed->context || - dma_fence_is_later(updates, flushed))) { - dma_fence_put(id->flushed_updates); - id->flushed_updates = dma_fence_get(updates); - } - id->pd_gpu_addr = job->vm_pd_addr; - atomic64_set(&id->owner, vm->client_id); - job->vm_needs_flush = needs_flush; - if (needs_flush) { - dma_fence_put(id->last_flush); - id->last_flush = NULL; - } - job->vm_id = id - id_mgr->ids; - trace_amdgpu_vm_grab_id(vm, ring, job); -out: - return r; -} - -/** - * amdgpu_vm_grab_id - allocate the next free VMID - * - * @vm: vm to allocate id for - * @ring: ring we want to submit job to - * @sync: sync object where we add dependencies - * @fence: fence protecting ID from reuse - * - * Allocate an id for the vm, adding fences to the sync obj as necessary. - */ -int amdgpu_vm_grab_id(struct amdgpu_vm *vm, struct amdgpu_ring *ring, - struct amdgpu_sync *sync, struct dma_fence *fence, - struct amdgpu_job *job) -{ - struct amdgpu_device *adev = ring->adev; - unsigned vmhub = ring->funcs->vmhub; - struct amdgpu_vm_id_manager *id_mgr = &adev->vm_manager.id_mgr[vmhub]; - uint64_t fence_context = adev->fence_context + ring->idx; - struct dma_fence *updates = sync->last_vm_update; - struct amdgpu_vm_id *id, *idle; - struct dma_fence **fences; - unsigned i; - int r = 0; - - mutex_lock(&id_mgr->lock); - if (amdgpu_vm_reserved_vmid_ready(vm, vmhub)) { - r = amdgpu_vm_grab_reserved_vmid_locked(vm, ring, sync, fence, job); - mutex_unlock(&id_mgr->lock); - return r; - } - fences = kmalloc_array(sizeof(void *), id_mgr->num_ids, GFP_KERNEL); - if (!fences) { - mutex_unlock(&id_mgr->lock); - return -ENOMEM; - } - /* Check if we have an idle VMID */ - i = 0; - list_for_each_entry(idle, &id_mgr->ids_lru, list) { - fences[i] = amdgpu_sync_peek_fence(&idle->active, ring); - if (!fences[i]) - break; - ++i; - } - - /* If we can't find a idle VMID to use, wait till one becomes available */ - if (&idle->list == &id_mgr->ids_lru) { - u64 fence_context = adev->vm_manager.fence_context + ring->idx; - unsigned seqno = ++adev->vm_manager.seqno[ring->idx]; - struct dma_fence_array *array; - unsigned j; - - for (j = 0; j < i; ++j) - dma_fence_get(fences[j]); - - array = dma_fence_array_create(i, fences, fence_context, - seqno, true); - if (!array) { - for (j = 0; j < i; ++j) - dma_fence_put(fences[j]); - kfree(fences); - r = -ENOMEM; - goto error; - } - - - r = amdgpu_sync_fence(ring->adev, sync, &array->base, false); - dma_fence_put(&array->base); - if (r) - goto error; - - mutex_unlock(&id_mgr->lock); - return 0; - - } - kfree(fences); - - job->vm_needs_flush = vm->use_cpu_for_update; - /* Check if we can use a VMID already assigned to this VM */ - list_for_each_entry_reverse(id, &id_mgr->ids_lru, list) { - struct dma_fence *flushed; - bool needs_flush = vm->use_cpu_for_update; - - /* Check all the prerequisites to using this VMID */ - if (amdgpu_vm_had_gpu_reset(adev, id)) - continue; - - if (atomic64_read(&id->owner) != vm->client_id) - continue; - - if (job->vm_pd_addr != id->pd_gpu_addr) - continue; - - if (!id->last_flush || - (id->last_flush->context != fence_context && - !dma_fence_is_signaled(id->last_flush))) - needs_flush = true; - - flushed = id->flushed_updates; - if (updates && (!flushed || dma_fence_is_later(updates, flushed))) - needs_flush = true; - - /* Concurrent flushes are only possible starting with Vega10 */ - if (adev->asic_type < CHIP_VEGA10 && needs_flush) - continue; - - /* Good we can use this VMID. Remember this submission as - * user of the VMID. - */ - r = amdgpu_sync_fence(ring->adev, &id->active, fence, false); - if (r) - goto error; - - if (updates && (!flushed || dma_fence_is_later(updates, flushed))) { - dma_fence_put(id->flushed_updates); - id->flushed_updates = dma_fence_get(updates); - } - - if (needs_flush) - goto needs_flush; - else - goto no_flush_needed; - - }; - - /* Still no ID to use? Then use the idle one found earlier */ - id = idle; - - /* Remember this submission as user of the VMID */ - r = amdgpu_sync_fence(ring->adev, &id->active, fence, false); - if (r) - goto error; - - id->pd_gpu_addr = job->vm_pd_addr; - dma_fence_put(id->flushed_updates); - id->flushed_updates = dma_fence_get(updates); - atomic64_set(&id->owner, vm->client_id); - -needs_flush: - job->vm_needs_flush = true; - dma_fence_put(id->last_flush); - id->last_flush = NULL; - -no_flush_needed: - list_move_tail(&id->list, &id_mgr->ids_lru); - - job->vm_id = id - id_mgr->ids; - trace_amdgpu_vm_grab_id(vm, ring, job); - -error: - mutex_unlock(&id_mgr->lock); - return r; -} - -static void amdgpu_vm_free_reserved_vmid(struct amdgpu_device *adev, - struct amdgpu_vm *vm, - unsigned vmhub) -{ - struct amdgpu_vm_id_manager *id_mgr = &adev->vm_manager.id_mgr[vmhub]; - - mutex_lock(&id_mgr->lock); - if (vm->reserved_vmid[vmhub]) { - list_add(&vm->reserved_vmid[vmhub]->list, - &id_mgr->ids_lru); - vm->reserved_vmid[vmhub] = NULL; - atomic_dec(&id_mgr->reserved_vmid_num); - } - mutex_unlock(&id_mgr->lock); -} - -static int amdgpu_vm_alloc_reserved_vmid(struct amdgpu_device *adev, - struct amdgpu_vm *vm, - unsigned vmhub) -{ - struct amdgpu_vm_id_manager *id_mgr; - struct amdgpu_vm_id *idle; - int r = 0; - - id_mgr = &adev->vm_manager.id_mgr[vmhub]; - mutex_lock(&id_mgr->lock); - if (vm->reserved_vmid[vmhub]) - goto unlock; - if (atomic_inc_return(&id_mgr->reserved_vmid_num) > - AMDGPU_VM_MAX_RESERVED_VMID) { - DRM_ERROR("Over limitation of reserved vmid\n"); - atomic_dec(&id_mgr->reserved_vmid_num); - r = -EINVAL; - goto unlock; - } - /* Select the first entry VMID */ - idle = list_first_entry(&id_mgr->ids_lru, struct amdgpu_vm_id, list); - list_del_init(&idle->list); - vm->reserved_vmid[vmhub] = idle; - mutex_unlock(&id_mgr->lock); - - return 0; -unlock: - mutex_unlock(&id_mgr->lock); - return r; -} - -/** * amdgpu_vm_check_compute_bug - check whether asic has compute vm bug * * @adev: amdgpu_device pointer @@ -767,8 +441,8 @@ bool amdgpu_vm_need_pipeline_sync(struct amdgpu_ring *ring, { struct amdgpu_device *adev = ring->adev; unsigned vmhub = ring->funcs->vmhub; - struct amdgpu_vm_id_manager *id_mgr = &adev->vm_manager.id_mgr[vmhub]; - struct amdgpu_vm_id *id; + struct amdgpu_vmid_mgr *id_mgr = &adev->vm_manager.id_mgr[vmhub]; + struct amdgpu_vmid *id; bool gds_switch_needed; bool vm_flush_needed = job->vm_needs_flush || ring->has_compute_vm_bug; @@ -783,7 +457,7 @@ bool amdgpu_vm_need_pipeline_sync(struct amdgpu_ring *ring, id->oa_base != job->oa_base || id->oa_size != job->oa_size); - if (amdgpu_vm_had_gpu_reset(adev, id)) + |