| // Copyright 2022 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "src/devices/block/drivers/nvme/queue.h" |
| |
| #include <lib/zx/bti.h> |
| #include <zircon/syscalls.h> |
| |
| namespace nvme { |
| |
| zx::result<> Queue::Init(zx::unowned_bti bti, uint32_t entries) { |
| if (entries * entry_size_ > zx_system_get_page_size()) { |
| entries = zx_system_get_page_size() / entry_size_; |
| } |
| |
| entry_count_ = entries; |
| |
| auto buffer_factory = dma_buffer::CreateBufferFactory(); |
| zx_status_t status = buffer_factory->CreateContiguous(*bti, zx_system_get_page_size(), 0, |
| dma_buffer::CacheOptions::kEnabled, &io_); |
| if (status != ZX_OK) { |
| return zx::error(status); |
| } |
| |
| memset(io_->virt(), 0, io_->size()); |
| return zx::ok(); |
| } |
| |
| } // namespace nvme |
