diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | 716 |
1 files changed, 716 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c new file mode 100644 index 000000000000..0ec222295fee --- /dev/null +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c @@ -0,0 +1,716 @@ +/* + * 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(ktime_get(), timeout_ns); + 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) +{ + 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; + + 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); + + if (r) + DRM_ERROR("Couldn't update BO_VA (%d)\n", r); +} + + + +int amdgpu_gem_va_ioctl(struct drm_device *dev, void *data, + struct drm_file *filp) +{ + struct drm_amdgpu_gem_va *args = data; + struct drm_gem_object *gobj; + struct amdgpu_device *adev = dev->dev_private; + struct amdgpu_fpriv *fpriv = filp->driver_priv; + struct amdgpu_bo *rbo; + struct amdgpu_bo_va *bo_va; + uint32_t invalid_flags, va_flags = 0; + int r = 0; + + if (!adev->vm_manager.enabled) + return -ENOTTY; + + if (args->va_address < AMDGPU_VA_RESERVED_SIZE) { + dev_err(&dev->pdev->dev, + "va_address 0x%lX is in reserved area 0x%X\n", + (unsigned long)args->va_address, + AMDGPU_VA_RESERVED_SIZE); + return -EINVAL; + } + + invalid_flags = ~(AMDGPU_VM_PAGE_READABLE | AMDGPU_VM_PAGE_WRITEABLE | + AMDGPU_VM_PAGE_EXECUTABLE); + if ((args->flags & invalid_flags)) { + dev_err(&dev->pdev->dev, "invalid flags 0x%08X vs 0x%08X\n", + args->flags, invalid_flags); + return -EINVAL; + } + + switch (args->operation) { + case AMDGPU_VA_OP_MAP: + case AMDGPU_VA_OP_UNMAP: + break; + default: + dev_err(&dev->pdev->dev, "unsupported operation %d\n", + args->operation); + return -EINVAL; + } + + gobj = drm_gem_object_lookup(dev, filp, args->handle); + if (gobj == NULL) + return -ENOENT; + + rbo = gem_to_amdgpu_bo(gobj); + r = amdgpu_bo_reserve(rbo, false); + if (r) { + drm_gem_object_unreference_unlocked(gobj); + return r; + } + + bo_va = amdgpu_vm_bo_find(&fpriv->vm, rbo); + if (!bo_va) { + amdgpu_bo_unreserve(rbo); + return -ENOENT; + } + + switch (args->operation) { + case AMDGPU_VA_OP_MAP: + if (args->flags & AMDGPU_VM_PAGE_READABLE) + va_flags |= AMDGPU_PTE_READABLE; + if (args->flags & AMDGPU_VM_PAGE_WRITEABLE) + va_flags |= AMDGPU_PTE_WRITEABLE; + if (args->flags & AMDGPU_VM_PAGE_EXECUTABLE) + va_flags |= AMDGPU_PTE_EXECUTABLE; + r = amdgpu_vm_bo_map(adev, bo_va, args->va_address, + args->offset_in_bo, args->map_size, + va_flags); + break; + case AMDGPU_VA_OP_UNMAP: + r = amdgpu_vm_bo_unmap(adev, bo_va, args->va_address); + break; + default: + break; + } + + if (!r) + amdgpu_gem_va_update_vm(adev, bo_va); + + drm_gem_object_unreference_unlocked(gobj); + return r; +} + +int amdgpu_gem_op_ioctl(struct drm_device *dev, void *data, + struct drm_file *filp) +{ + struct drm_amdgpu_gem_op *args = data; + struct drm_gem_object *gobj; + struct amdgpu_bo *robj; + int r; + + 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)) + goto out; + + switch (args->op) { + case AMDGPU_GEM_OP_GET_GEM_CREATE_INFO: { + struct drm_amdgpu_gem_create_in info; + void __user *out = (void __user *)(long)args->value; + + info.bo_size = robj->gem_base.size; + info.alignment = robj->tbo.mem.page_alignment << PAGE_SHIFT; + info.domains = robj->initial_domain; + info.domain_flags = robj->flags; + if (copy_to_user(out, &info, sizeof(info))) + r = -EFAULT; + break; + } + case AMDGPU_GEM_OP_SET_PLACEMENT: + if (amdgpu_ttm_tt_has_userptr(robj->tbo.ttm)) { + r = -EPERM; + break; + } + robj->initial_domain = args->value & (AMDGPU_GEM_DOMAIN_VRAM | + AMDGPU_GEM_DOMAIN_GTT | + AMDGPU_GEM_DOMAIN_CPU); + break; + default: + r = -EINVAL; + } + + amdgpu_bo_unreserve(robj); +out: + drm_gem_object_unreference_unlocked(gobj); + return r; +} + +int amdgpu_mode_dumb_create(struct drm_file *file_priv, + struct drm_device *dev, + struct drm_mode_create_dumb *args) +{ + struct amdgpu_device *adev = dev->dev_private; + struct drm_gem_object *gobj; + uint32_t handle; + int r; + + args->pitch = amdgpu_align_pitch(adev, args->width, args->bpp, 0) * ((args->bpp + 1) / 8); + args->size = args->pitch * args->height; + args->size = ALIGN(args->size, PAGE_SIZE); + + r = amdgpu_gem_object_create(adev, args->size, 0, + AMDGPU_GEM_DOMAIN_VRAM, + 0, ttm_bo_type_device, + &gobj); + if (r) + return -ENOMEM; + + r = drm_gem_handle_create(file_priv, gobj, &handle); + /* drop reference from allocate - handle holds it now */ + drm_gem_object_unreference_unlocked(gobj); + if (r) { + return r; + } + args->handle = handle; + return 0; +} + +#if defined(CONFIG_DEBUG_FS) +static int amdgpu_debugfs_gem_info(struct seq_file *m, void *data) +{ + struct drm_info_node *node = (struct drm_info_node *)m->private; + struct drm_device *dev = node->minor->dev; + struct amdgpu_device *adev = dev->dev_private; + struct amdgpu_bo *rbo; + unsigned i = 0; + + mutex_lock(&adev->gem.mutex); + list_for_each_entry(rbo, &adev->gem.objects, list) { + unsigned domain; + const char *placement; + + domain = amdgpu_mem_type_to_domain(rbo->tbo.mem.mem_type); + switch (domain) { + case AMDGPU_GEM_DOMAIN_VRAM: + placement = "VRAM"; + break; + case AMDGPU_GEM_DOMAIN_GTT: + placement = " GTT"; + break; + case AMDGPU_GEM_DOMAIN_CPU: + default: + placement = " CPU"; + break; + } + seq_printf(m, "bo[0x%08x] %8ldkB %8ldMB %s pid %8ld\n", + i, amdgpu_bo_size(rbo) >> 10, amdgpu_bo_size(rbo) >> 20, + placement, (unsigned long)rbo->pid); + i++; + } + mutex_unlock(&adev->gem.mutex); + return 0; +} + +static struct drm_info_list amdgpu_debugfs_gem_list[] = { + {"amdgpu_gem_info", &amdgpu_debugfs_gem_info, 0, NULL}, +}; +#endif + +int amdgpu_gem_debugfs_init(struct amdgpu_device *adev) +{ +#if defined(CONFIG_DEBUG_FS) + return amdgpu_debugfs_add_files(adev, amdgpu_debugfs_gem_list, 1); +#endif + return 0; +} |