| // Copyright 2019 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 <lib/device-protocol/pci.h> |
| #include <lib/mmio/mmio.h> |
| |
| namespace ddk { |
| |
| zx_status_t Pci::MapMmio(uint32_t index, uint32_t cache_policy, std::optional<MmioBuffer>* mmio) { |
| zx_pci_bar_t bar; |
| zx_status_t status = GetBar(index, &bar); |
| if (status != ZX_OK) { |
| return status; |
| } |
| |
| // TODO(cja): PIO may be mappable on non-x86 architectures |
| if (bar.type == ZX_PCI_BAR_TYPE_PIO || bar.handle == ZX_HANDLE_INVALID) { |
| return ZX_ERR_WRONG_TYPE; |
| } |
| |
| zx::vmo vmo(bar.handle); |
| |
| size_t vmo_size; |
| status = vmo.get_size(&vmo_size); |
| if (status != ZX_OK) { |
| return status; |
| } |
| |
| return MmioBuffer::Create(0, vmo_size, std::move(vmo), cache_policy, mmio); |
| } |
| |
| } // namespace ddk |
