| // 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 <zircon/device/sysmem.h> |
| |
| #include <ddk/debug.h> |
| #include <ddk/platform-defs.h> |
| |
| #include "x86.h" |
| |
| namespace x86 { |
| |
| // This value is passed to bti_create as a marker; it does not have a particular |
| // meaning to anything in the system. |
| #define SYSMEM_BTI_ID 0x12341234UL |
| |
| static const pbus_bti_t sysmem_btis[] = { |
| { |
| .iommu_index = 0, |
| .bti_id = SYSMEM_BTI_ID, |
| }, |
| }; |
| |
| // On x86 not much is known about the display adapter or other hardware. |
| static const sysmem_metadata_t sysmem_metadata = { |
| .vid = PDEV_VID_GENERIC, |
| .pid = PDEV_PID_GENERIC, |
| .protected_memory_size = 0, |
| .contiguous_memory_size = 0, |
| }; |
| |
| static const pbus_metadata_t sysmem_metadata_list[] = {{ |
| .type = SYSMEM_METADATA, |
| .data_buffer = &sysmem_metadata, |
| .data_size = sizeof(sysmem_metadata), |
| }}; |
| |
| static const pbus_dev_t sysmem_dev = [] { |
| pbus_dev_t dev = {}; |
| dev.name = "sysmem"; |
| dev.vid = PDEV_VID_GENERIC; |
| dev.pid = PDEV_PID_GENERIC; |
| dev.did = PDEV_DID_SYSMEM; |
| dev.bti_list = sysmem_btis; |
| dev.bti_count = countof(sysmem_btis); |
| dev.metadata_list = sysmem_metadata_list; |
| dev.metadata_count = countof(sysmem_metadata_list); |
| return dev; |
| }(); |
| |
| zx_status_t X86::SysmemInit() { |
| zx_status_t status = pbus_.ProtocolDeviceAdd(ZX_PROTOCOL_SYSMEM, &sysmem_dev); |
| if (status != ZX_OK) { |
| zxlogf(ERROR, "%s: ProtocolDeviceAddFailed %d", __func__, status); |
| } |
| return status; |
| } |
| |
| } // namespace x86 |
