/* * Copyright 2008 Advanced Micro Devices, Inc. * Copyright 2008 Red Hat Inc. * Copyright 2009 Jerome Glisse. * * 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. * * Authors: Dave Airlie * Alex Deucher * Jerome Glisse */#include <linux/ktime.h>#include <drm/drmP.h>#include <drm/amdgpu_drm.h>#include "amdgpu.h" void amdgpu_gem_object_free(struct drm_gem_object *gobj){ struct amdgpu_bo *robj = gem_to_amdgpu_bo(gobj); if (robj) { if (robj->gem_base.import_attach) drm_prime_gem_destroy(&robj->gem_base, robj->tbo.sg); amdgpu_mn_unregister(robj); amdgpu_bo_unref(&robj); }} int amdgpu_gem_object_create(struct amdgpu_device *adev, unsigned long size, int alignment, u32 initial_domain, u64 flags, bool kernel, struct drm_gem_object **obj){ struct amdgpu_bo *robj; unsigned long max_size; int r; *obj = NULL; /* At least align on page size */ if (alignment < PAGE_SIZE) { alignment = PAGE_SIZE; } if (!(initial_domain & (AMDGPU_GEM_DOMAIN_GDS | AMDGPU_GEM_DOMAIN_GWS | AMDGPU_GEM_DOMAIN_OA))) { /* Maximum bo size is the unpinned gtt size since we use the gtt to * handle vram to system pool migrations. */ max_size = adev->mc.gtt_size - adev->gart_pin_size; if (size > max_size) { DRM_DEBUG("Allocation size %ldMb bigger than %ldMb limit\n", size >> 20, max_size >> 20); return -ENOMEM; } }retry: r = amdgpu_bo_create(adev, size, alignment, kernel, initial_domain, flags, NULL, &robj); if (r) { if (r != -ERESTARTSYS) { if (initial_domain == AMDGPU_GEM_DOMAIN_VRAM) { initial_domain |= AMDGPU_GEM_DOMAIN_GTT; goto retry; } DRM_ERROR("Failed to allocate GEM object (%ld, %d, %u, %d)\n", size, initial_domain, alignment, r); } return r; } *obj = &robj->gem_base; robj->pid = task_pid_nr(current); mutex_lock(&adev->gem.mutex); list_add_tail(&robj->list, &adev->gem.objects); mutex_unlock(&adev->gem.mutex); return 0;} int amdgpu_gem_init(struct amdgpu_device *adev){ INIT_LIST_HEAD(&adev->gem.objects); return 0;} void amdgpu_gem_fini(struct amdgpu_device *adev){ amdgpu_bo_force_delete(adev);} /* * Call from drm_gem_handle_create which appear in both new and open ioctl * case. */int amdgpu_gem_object_open(struct drm_gem_object *obj, struct drm_file *file_priv){ struct amdgpu_bo *rbo = gem_to_amdgpu_bo(obj); struct amdgpu_device *adev = rbo->adev; struct amdgpu_fpriv *fpriv = file_priv->driver_priv; struct amdgpu_vm *vm = &fpriv->vm; struct amdgpu_bo_va *bo_va; int r; r = amdgpu_bo_reserve(rbo, false); if (r) { return r; } bo_va = amdgpu_vm_bo_find(vm, rbo); if (!bo_va) { bo_va = amdgpu_vm_bo_add(adev, vm, rbo); } else { ++bo_va->ref_count; } amdgpu_bo_unreserve(rbo); return 0;} void amdgpu_gem_object_close(struct drm_gem_object *obj, struct drm_file *file_priv){ struct amdgpu_bo *rbo = gem_to_amdgpu_bo(obj); struct amdgpu_device *adev = rbo->adev; struct amdgpu_fpriv *fpriv = file_priv->driver_priv; struct amdgpu_vm *vm = &fpriv->vm; struct amdgpu_bo_va *bo_va; int r; r = amdgpu_bo_reserve(rbo, true); if (r) { dev_err(adev->dev, "leaking bo va because " "we fail to reserve bo (%d)\n", r); return; } bo_va = amdgpu_vm_bo_find(vm, rbo); if (bo_va) { if (--bo_va->ref_count == 0) { amdgpu_vm_bo_rmv(adev, bo_va); } } amdgpu_bo_unreserve(rbo);} static int amdgpu_gem_handle_lockup(struct amdgpu_device *adev, int r){ if (r == -EDEADLK) { r = amdgpu_gpu_reset(adev); if (!r) r = -EAGAIN; } return r;} /* * GEM ioctls. */int amdgpu_gem_create_ioctl(struct drm_device *dev, void *data, struct drm_file *filp){ struct amdgpu_device *adev = dev->dev_private; union drm_amdgpu_gem_create *args = data; uint64_t size = args->in.bo_size; struct drm_gem_object *gobj; uint32_t handle; bool kernel = false; int r; down_read(&adev->exclusive_lock); /* create a gem object to contain this object in */ if (args->in.domains & (AMDGPU_GEM_DOMAIN_GDS | AMDGPU_GEM_DOMAIN_GWS | AMDGPU_GEM_DOMAIN_OA)) { kernel = true; if (args->in.domains == AMDGPU_GEM_DOMAIN_GDS) size = size << AMDGPU_GDS_SHIFT; else if (args->in.domains == AMDGPU_GEM_DOMAIN_GWS) size = size << AMDGPU_GWS_SHIFT; else if (args->in.domains == AMDGPU_GEM_DOMAIN_OA) size = size << AMDGPU_OA_SHIFT; else { r = -EINVAL; goto error_unlock; } } size = roundup(size, PAGE_SIZE); r = amdgpu_gem_object_create(adev, size, args->in.alignment, (u32)(0xffffffff & args->in.domains), args->in.domain_flags, kernel, &gobj); if (r) goto error_unlock; r = drm_gem_handle_create(filp, gobj, &handle); /* drop reference from allocate - handle holds it now */ drm_gem_object_unreference_unlocked(gobj); if (r) goto error_unlock; memset(args, 0, sizeof(*args)); args->out.handle = handle; up_read(&adev->exclusive_lock); return 0; error_unlock: up_read(&adev->exclusive_lock); r = amdgpu_gem_handle_lockup(adev, r); return r;} int amdgpu_gem_userptr_ioctl(struct drm_device *dev, void *data, struct drm_file *filp){ struct amdgpu_device *adev = dev->dev_private; struct drm_amdgpu_gem_userptr *args = data; struct drm_gem_object *gobj; struct amdgpu_bo *bo; uint32_t handle; int r; if (offset_in_page(args->addr | args->size)) return -EINVAL; /* reject unknown flag values */ if (args->flags & ~(AMDGPU_GEM_USERPTR_READONLY | AMDGPU_GEM_USERPTR_ANONONLY | AMDGPU_GEM_USERPTR_VALIDATE | AMDGPU_GEM_USERPTR_REGISTER)) return -EINVAL; if (!(args->flags & AMDGPU_GEM_USERPTR_ANONONLY) || !(args->flags & AMDGPU_GEM_USERPTR_REGISTER)) { /* if we want to write to it we must require anonymous memory and install a MMU notifier */ return -EACCES; } down_read(&adev->exclusive_lock); /* create a gem object to contain this object in */ r = amdgpu_gem_object_create(adev, args->size, 0, AMDGPU_GEM_DOMAIN_CPU, 0, 0, &gobj); if (r) goto handle_lockup; bo = gem_to_amdgpu_bo(gobj); r = amdgpu_ttm_tt_set_userptr(bo->tbo.ttm, args->addr, args->flags); if (r) goto release_object; if (args->flags & AMDGPU_GEM_USERPTR_REGISTER) { r = amdgpu_mn_register(bo, args->addr); if (r) goto release_object; } if (args->flags & AMDGPU_GEM_USERPTR_VALIDATE) { down_read(¤t->mm->mmap_sem); r = amdgpu_bo_reserve(bo, true); if (r) { up_read(¤t->mm->mmap_sem); goto release_object; } amdgpu_ttm_placement_from_domain(bo, AMDGPU_GEM_DOMAIN_GTT); r = ttm_bo_validate(&bo->tbo, &bo->placement, true, false); amdgpu_bo_unreserve(bo); up_read(¤t->mm->mmap_sem); if (r) goto release_object; } r = drm_gem_handle_create(filp, gobj, &handle); /* drop reference from allocate - handle holds it now */ drm_gem_object_unreference_unlocked(gobj); if (r) goto handle_lockup; args->handle = handle; up_read(&adev->exclusive_lock); return 0; release_object: drm_gem_object_unreference_unlocked(gobj); handle_lockup: up_read(&adev->exclusive_lock); r = amdgpu_gem_handle_lockup(adev, r); return r;} int amdgpu_mode_dumb_mmap(struct drm_file *filp, struct drm_device *dev, uint32_t handle, uint64_t *offset_p){ struct drm_gem_object *gobj; struct amdgpu_bo *robj; gobj = drm_gem_object_lookup(dev, filp, handle); if (gobj == NULL) { return -ENOENT; } robj = gem_to_amdgpu_bo(gobj); if (amdgpu_ttm_tt_has_userptr(robj->tbo.ttm) || (robj->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS)) { drm_gem_object_unreference_unlocked(gobj); return -EPERM; } *offset_p = amdgpu_bo_mmap_offset(robj); drm_gem_object_unreference_unlocked(gobj); return 0;} int amdgpu_gem_mmap_ioctl(struct drm_device *dev, void *data, struct drm_file *filp){ union drm_amdgpu_gem_mmap *args = data; uint32_t handle = args->in.handle; memset(args, 0, sizeof(*args)); return amdgpu_mode_dumb_mmap(filp, dev, handle, &args->out.addr_ptr);} /** * amdgpu_gem_timeout - calculate jiffies timeout from absolute value * * @timeout_ns: timeout in ns * * Calculate the timeout in jiffies from an absolute timeout in ns. */unsigned long amdgpu_gem_timeout(uint64_t timeout_ns){ unsigned long timeout_jiffies; ktime_t timeout; /* clamp timeout if it's to large */ if (((int64_t)timeout_ns) < 0) return MAX_SCHEDULE_TIMEOUT; timeout = ktime_sub(ns_to_ktime(timeout_ns), ktime_get()); if (ktime_to_ns(timeout) < 0) return 0; timeout_jiffies = nsecs_to_jiffies(ktime_to_ns(timeout)); /* clamp timeout to avoid unsigned-> signed overflow */ if (timeout_jiffies > MAX_SCHEDULE_TIMEOUT ) return MAX_SCHEDULE_TIMEOUT - 1; return timeout_jiffies;} int amdgpu_gem_wait_idle_ioctl(struct drm_device *dev, void *data, struct drm_file *filp){ struct amdgpu_device *adev = dev->dev_private; union drm_amdgpu_gem_wait_idle *args = data; struct drm_gem_object *gobj; struct amdgpu_bo *robj; uint32_t handle = args->in.handle; unsigned long timeout = amdgpu_gem_timeout(args->in.timeout); int r = 0; long ret; gobj = drm_gem_object_lookup(dev, filp, handle); if (gobj == NULL) { return -ENOENT; } robj = gem_to_amdgpu_bo(gobj); if (timeout == 0) ret = reservation_object_test_signaled_rcu(robj->tbo.resv, true); else ret = reservation_object_wait_timeout_rcu(robj->tbo.resv, true, true, timeout); /* ret == 0 means not signaled, * ret > 0 means signaled * ret < 0 means interrupted before timeout */ if (ret >= 0) { memset(args, 0, sizeof(*args)); args->out.status = (ret == 0); } else r = ret; drm_gem_object_unreference_unlocked(gobj); r = amdgpu_gem_handle_lockup(adev, r); return r;} int amdgpu_gem_metadata_ioctl(struct drm_device *dev, void *data, struct drm_file *filp){ struct drm_amdgpu_gem_metadata *args = data; struct drm_gem_object *gobj; struct amdgpu_bo *robj; int r = -1; DRM_DEBUG("%d \n", args->handle); gobj = drm_gem_object_lookup(dev, filp, args->handle); if (gobj == NULL) return -ENOENT; robj = gem_to_amdgpu_bo(gobj); r = amdgpu_bo_reserve(robj, false); if (unlikely(r != 0)) goto out; if (args->op == AMDGPU_GEM_METADATA_OP_GET_METADATA) { amdgpu_bo_get_tiling_flags(robj, &args->data.tiling_info); r = amdgpu_bo_get_metadata(robj, args->data.data, sizeof(args->data.data), &args->data.data_size_bytes, &args->data.flags); } else if (args->op == AMDGPU_GEM_METADATA_OP_SET_METADATA) { r = amdgpu_bo_set_tiling_flags(robj, args->data.tiling_info); if (!r) r = amdgpu_bo_set_metadata(robj, args->data.data, args->data.data_size_bytes, args->data.flags); } amdgpu_bo_unreserve(robj);out: drm_gem_object_unreference_unlocked(gobj); return r;} /** * amdgpu_gem_va_update_vm -update the bo_va in its VM * * @adev: amdgpu_device pointer * @bo_va: bo_va to update * * Update the bo_va directly after setting it's address. Errors are not * vital here, so they are not reported back to userspace. */static void amdgpu_gem_va_update_vm(struct amdgpu_device *adev, struct amdgpu_bo_va *bo_va, uint32_t operation){ struct ttm_validate_buffer tv, *entry; struct amdgpu_bo_list_entry *vm_bos; struct ww_acquire_ctx ticket; struct list_head list; unsigned domain; int r; INIT_LIST_HEAD(&list); tv.bo = &bo_va->bo->tbo; tv.shared = true; list_add(&tv.head, &list); vm_bos = amdgpu_vm_get_bos(adev, bo_va->vm, &list); if (!vm_bos) return; r = ttm_eu_reserve_buffers(&ticket, &list, true, NULL); if (r) goto error_free; list_for_each_entry(entry, &list, head) { domain = amdgpu_mem_type_to_domain(entry->bo->mem.mem_type); /* if anything is swapped out don't swap it in here, just abort and wait for the next CS */ if (domain == AMDGPU_GEM_DOMAIN_CPU) goto error_unreserve; } mutex_lock(&bo_va->vm->mutex); r = amdgpu_vm_clear_freed(adev, bo_va->vm); if (r) goto error_unlock; if (operation == AMDGPU_VA_OP_MAP) r = amdgpu_vm_bo_update(adev, bo_va, &bo_va->bo->tbo.mem); error_unlock: mutex_unlock(&bo_va->vm->mutex); error_unreserve: ttm_eu_backoff_reservation(&ticket, &list); error_free: drm_free_large(vm_bos); Lines 1–500 of 718. 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/* * Copyright 2008 Advanced Micro Devices, Inc. * Copyright 2008 Red Hat Inc. * Copyright 2009 Jerome Glisse. * * 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. * * Authors: Dave Airlie * Alex Deucher * Jerome Glisse */ #include <linux/ktime.h> #include <drm/drmP.h> #include <drm/amdgpu_drm.h> #include "amdgpu.h" void amdgpu_gem_object_free(struct drm_gem_object *gobj) { struct amdgpu_bo *robj = gem_to_amdgpu_bo(gobj); if (robj) { if (robj->gem_base.import_attach) drm_prime_gem_destroy(&robj->gem_base, robj->tbo.sg); amdgpu_mn_unregister(robj); amdgpu_bo_unref(&robj); } } int amdgpu_gem_object_create(struct amdgpu_device *adev, unsigned long size, int alignment, u32 initial_domain, u64 flags, bool kernel, struct drm_gem_object **obj) { struct amdgpu_bo *robj; unsigned long max_size; int r; *obj = NULL; /* At least align on page size */ if (alignment < PAGE_SIZE) { alignment = PAGE_SIZE; } if (!(initial_domain & (AMDGPU_GEM_DOMAIN_GDS | AMDGPU_GEM_DOMAIN_GWS | AMDGPU_GEM_DOMAIN_OA))) { /* Maximum bo size is the unpinned gtt size since we use the gtt to * handle vram to system pool migrations. */ max_size = adev->mc.gtt_size - adev->gart_pin_size; if (size > max_size) { DRM_DEBUG("Allocation size %ldMb bigger than %ldMb limit\n", size >> 20, max_size >> 20); return -ENOMEM; } } retry: r = amdgpu_bo_create(adev, size, alignment, kernel, initial_domain, flags, NULL, &robj); if (r) { if (r != -ERESTARTSYS) { if (initial_domain == AMDGPU_GEM_DOMAIN_VRAM) { initial_domain |= AMDGPU_GEM_DOMAIN_GTT; goto retry; } DRM_ERROR("Failed to allocate GEM object (%ld, %d, %u, %d)\n", size, initial_domain, alignment, r); } return r; } *obj = &robj->gem_base; robj->pid = task_pid_nr(current); mutex_lock(&adev->gem.mutex); list_add_tail(&robj->list, &adev->gem.objects); mutex_unlock(&adev->gem.mutex); return 0; } int amdgpu_gem_init(struct amdgpu_device *adev) { INIT_LIST_HEAD(&adev->gem.objects); return 0; } void amdgpu_gem_fini(struct amdgpu_device *adev) { amdgpu_bo_force_delete(adev); } /* * Call from drm_gem_handle_create which appear in both new and open ioctl * case. */ int amdgpu_gem_object_open(struct drm_gem_object *obj, struct drm_file *file_priv) { struct amdgpu_bo *rbo = gem_to_amdgpu_bo(obj); struct amdgpu_device *adev = rbo->adev; struct amdgpu_fpriv *fpriv = file_priv->driver_priv; struct amdgpu_vm *vm = &fpriv->vm; struct amdgpu_bo_va *bo_va; int r; r = amdgpu_bo_reserve(rbo, false); if (r) { return r; } bo_va = amdgpu_vm_bo_find(vm, rbo); if (!bo_va) { bo_va = amdgpu_vm_bo_add(adev, vm, rbo); } else { ++bo_va->ref_count; } amdgpu_bo_unreserve(rbo); return 0; } void amdgpu_gem_object_close(struct drm_gem_object *obj, struct drm_file *file_priv) { struct amdgpu_bo *rbo = gem_to_amdgpu_bo(obj); struct amdgpu_device *adev = rbo->adev; struct amdgpu_fpriv *fpriv = file_priv->driver_priv; struct amdgpu_vm *vm = &fpriv->vm; struct amdgpu_bo_va *bo_va; int r; r = amdgpu_bo_reserve(rbo, true); if (r) { dev_err(adev->dev, "leaking bo va because " "we fail to reserve bo (%d)\n", r); return; } bo_va = amdgpu_vm_bo_find(vm, rbo); if (bo_va) { if (--bo_va->ref_count == 0) { amdgpu_vm_bo_rmv(adev, bo_va); } } amdgpu_bo_unreserve(rbo); } static int amdgpu_gem_handle_lockup(struct amdgpu_device *adev, int r) { if (r == -EDEADLK) { r = amdgpu_gpu_reset(adev); if (!r) r = -EAGAIN; } return r; } /* * GEM ioctls. */ int amdgpu_gem_create_ioctl(struct drm_device *dev, void *data, struct drm_file *filp) { struct amdgpu_device *adev = dev->dev_private; union drm_amdgpu_gem_create *args = data; uint64_t size = args->in.bo_size; struct drm_gem_object *gobj; uint32_t handle; bool kernel = false; int r; down_read(&adev->exclusive_lock); /* create a gem object to contain this object in */ if (args->in.domains & (AMDGPU_GEM_DOMAIN_GDS | AMDGPU_GEM_DOMAIN_GWS | AMDGPU_GEM_DOMAIN_OA)) { kernel = true; if (args->in.domains == AMDGPU_GEM_DOMAIN_GDS) size = size << AMDGPU_GDS_SHIFT; else if (args->in.domains == AMDGPU_GEM_DOMAIN_GWS) size = size << AMDGPU_GWS_SHIFT; else if (args->in.domains == AMDGPU_GEM_DOMAIN_OA) size = size << AMDGPU_OA_SHIFT; else { r = -EINVAL; goto error_unlock; } } size = roundup(size, PAGE_SIZE); r = amdgpu_gem_object_create(adev, size, args->in.alignment, (u32)(0xffffffff & args->in.domains), args->in.domain_flags, kernel, &gobj); if (r) goto error_unlock; r = drm_gem_handle_create(filp, gobj, &handle); /* drop reference from allocate - handle holds it now */ drm_gem_object_unreference_unlocked(gobj); if (r) goto error_unlock; memset(args, 0, sizeof(*args)); args->out.handle = handle; up_read(&adev->exclusive_lock); return 0; error_unlock: up_read(&adev->exclusive_lock); r = amdgpu_gem_handle_lockup(adev, r); return r; } int amdgpu_gem_userptr_ioctl(struct drm_device *dev, void *data, struct drm_file *filp) { struct amdgpu_device *adev = dev->dev_private; struct drm_amdgpu_gem_userptr *args = data; struct drm_gem_object *gobj; struct amdgpu_bo *bo; uint32_t handle; int r; if (offset_in_page(args->addr | args->size)) return -EINVAL; /* reject unknown flag values */ if (args->flags & ~(AMDGPU_GEM_USERPTR_READONLY | AMDGPU_GEM_USERPTR_ANONONLY | AMDGPU_GEM_USERPTR_VALIDATE | AMDGPU_GEM_USERPTR_REGISTER)) return -EINVAL; if (!(args->flags & AMDGPU_GEM_USERPTR_ANONONLY) || !(args->flags & AMDGPU_GEM_USERPTR_REGISTER)) { /* if we want to write to it we must require anonymous memory and install a MMU notifier */ return -EACCES; } down_read(&adev->exclusive_lock); /* create a gem object to contain this object in */ r = amdgpu_gem_object_create(adev, args->size, 0, AMDGPU_GEM_DOMAIN_CPU, 0, 0, &gobj); if (r) goto handle_lockup; bo = gem_to_amdgpu_bo(gobj); r = amdgpu_ttm_tt_set_userptr(bo->tbo.ttm, args->addr, args->flags); if (r) goto release_object; if (args->flags & AMDGPU_GEM_USERPTR_REGISTER) { r = amdgpu_mn_register(bo, args->addr); if (r) goto release_object; } if (args->flags & AMDGPU_GEM_USERPTR_VALIDATE) { down_read(¤t->mm->mmap_sem); r = amdgpu_bo_reserve(bo, true); if (r) { up_read(¤t->mm->mmap_sem); goto release_object; } amdgpu_ttm_placement_from_domain(bo, AMDGPU_GEM_DOMAIN_GTT); r = ttm_bo_validate(&bo->tbo, &bo->placement, true, false); amdgpu_bo_unreserve(bo); up_read(¤t->mm->mmap_sem); if (r) goto release_object; } r = drm_gem_handle_create(filp, gobj, &handle); /* drop reference from allocate - handle holds it now */ drm_gem_object_unreference_unlocked(gobj); if (r) goto handle_lockup; args->handle = handle; up_read(&adev->exclusive_lock); return 0; release_object: drm_gem_object_unreference_unlocked(gobj); handle_lockup: up_read(&adev->exclusive_lock); r = amdgpu_gem_handle_lockup(adev, r); return r; } int amdgpu_mode_dumb_mmap(struct drm_file *filp, struct drm_device *dev, uint32_t handle, uint64_t *offset_p) { struct drm_gem_object *gobj; struct amdgpu_bo *robj; gobj = drm_gem_object_lookup(dev, filp, handle); if (gobj == NULL) { return -ENOENT; } robj = gem_to_amdgpu_bo(gobj); if (amdgpu_ttm_tt_has_userptr(robj->tbo.ttm) || (robj->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS)) { drm_gem_object_unreference_unlocked(gobj); return -EPERM; } *offset_p = amdgpu_bo_mmap_offset(robj); drm_gem_object_unreference_unlocked(gobj); return 0; } int amdgpu_gem_mmap_ioctl(struct drm_device *dev, void *data, struct drm_file *filp) { union drm_amdgpu_gem_mmap *args = data; uint32_t handle = args->in.handle; memset(args, 0, sizeof(*args)); return amdgpu_mode_dumb_mmap(filp, dev, handle, &args->out.addr_ptr); } /** * amdgpu_gem_timeout - calculate jiffies timeout from absolute value * * @timeout_ns: timeout in ns * * Calculate the timeout in jiffies from an absolute timeout in ns. */ unsigned long amdgpu_gem_timeout(uint64_t timeout_ns) { unsigned long timeout_jiffies; ktime_t timeout; /* clamp timeout if it's to large */ if (((int64_t)timeout_ns) < 0) return MAX_SCHEDULE_TIMEOUT; timeout = ktime_sub(ns_to_ktime(timeout_ns), ktime_get()); if (ktime_to_ns(timeout) < 0) return 0; timeout_jiffies = nsecs_to_jiffies(ktime_to_ns(timeout)); /* clamp timeout to avoid unsigned-> signed overflow */ if (timeout_jiffies > MAX_SCHEDULE_TIMEOUT ) return MAX_SCHEDULE_TIMEOUT - 1; return timeout_jiffies; } int amdgpu_gem_wait_idle_ioctl(struct drm_device *dev, void *data, struct drm_file *filp) { struct amdgpu_device *adev = dev->dev_private; union drm_amdgpu_gem_wait_idle *args = data; struct drm_gem_object *gobj; struct amdgpu_bo *robj; uint32_t handle = args->in.handle; unsigned long timeout = amdgpu_gem_timeout(args->in.timeout); int r = 0; long ret; gobj = drm_gem_object_lookup(dev, filp, handle); if (gobj == NULL) { return -ENOENT; } robj = gem_to_amdgpu_bo(gobj); if (timeout == 0) ret = reservation_object_test_signaled_rcu(robj->tbo.resv, true); else ret = reservation_object_wait_timeout_rcu(robj->tbo.resv, true, true, timeout); /* ret == 0 means not signaled, * ret > 0 means signaled * ret < 0 means interrupted before timeout */ if (ret >= 0) { memset(args, 0, sizeof(*args)); args->out.status = (ret == 0); } else r = ret; drm_gem_object_unreference_unlocked(gobj); r = amdgpu_gem_handle_lockup(adev, r); return r; } int amdgpu_gem_metadata_ioctl(struct drm_device *dev, void *data, struct drm_file *filp) { struct drm_amdgpu_gem_metadata *args = data; struct drm_gem_object *gobj; struct amdgpu_bo *robj; int r = -1; DRM_DEBUG("%d \n", args->handle); gobj = drm_gem_object_lookup(dev, filp, args->handle); if (gobj == NULL) return -ENOENT; robj = gem_to_amdgpu_bo(gobj); r = amdgpu_bo_reserve(robj, false); if (unlikely(r != 0)) goto out; if (args->op == AMDGPU_GEM_METADATA_OP_GET_METADATA) { amdgpu_bo_get_tiling_flags(robj, &args->data.tiling_info); r = amdgpu_bo_get_metadata(robj, args->data.data, sizeof(args->data.data), &args->data.data_size_bytes, &args->data.flags); } else if (args->op == AMDGPU_GEM_METADATA_OP_SET_METADATA) { r = amdgpu_bo_set_tiling_flags(robj, args->data.tiling_info); if (!r) r = amdgpu_bo_set_metadata(robj, args->data.data, args->data.data_size_bytes, args->data.flags); } amdgpu_bo_unreserve(robj); out: drm_gem_object_unreference_unlocked(gobj); return r; } /** * amdgpu_gem_va_update_vm -update the bo_va in its VM * * @adev: amdgpu_device pointer * @bo_va: bo_va to update * * Update the bo_va directly after setting it's address. Errors are not * vital here, so they are not reported back to userspace. */ static void amdgpu_gem_va_update_vm(struct amdgpu_device *adev, struct amdgpu_bo_va *bo_va, uint32_t operation) { struct ttm_validate_buffer tv, *entry; struct amdgpu_bo_list_entry *vm_bos; struct ww_acquire_ctx ticket; struct list_head list; unsigned domain; int r; INIT_LIST_HEAD(&list); tv.bo = &bo_va->bo->tbo; tv.shared = true; list_add(&tv.head, &list); vm_bos = amdgpu_vm_get_bos(adev, bo_va->vm, &list); if (!vm_bos) return; r = ttm_eu_reserve_buffers(&ticket, &list, true, NULL); if (r) goto error_free; list_for_each_entry(entry, &list, head) { domain = amdgpu_mem_type_to_domain(entry->bo->mem.mem_type); /* if anything is swapped out don't swap it in here, just abort and wait for the next CS */ if (domain == AMDGPU_GEM_DOMAIN_CPU) goto error_unreserve; } mutex_lock(&bo_va->vm->mutex); r = amdgpu_vm_clear_freed(adev, bo_va->vm); if (r) goto error_unlock; if (operation == AMDGPU_VA_OP_MAP) r = amdgpu_vm_bo_update(adev, bo_va, &bo_va->bo->tbo.mem); error_unlock: mutex_unlock(&bo_va->vm->mutex); error_unreserve: ttm_eu_backoff_reservation(&ticket, &list); error_free: drm_free_large(vm_bos);