| // Copyright (C) 2019 The Android Open Source Project |
| // Copyright (C) 2019 Google Inc. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include <memory> |
| #include <fcntl.h> |
| #include <lib/fdio/fdio.h> |
| #include <lib/zx/channel.h> |
| #include <lib/zx/vmo.h> |
| #include <log/log.h> |
| #include <stdlib.h> |
| #include <sys/stat.h> |
| #include <sys/types.h> |
| #include <unistd.h> |
| #include <zircon/process.h> |
| #include <zircon/syscalls.h> |
| #include <zircon/syscalls/object.h> |
| |
| #include "goldfish_address_space.h" |
| |
| GoldfishAddressSpaceBlockProvider::GoldfishAddressSpaceBlockProvider() { |
| zx::channel channel; |
| zx_status_t status = |
| fdio_get_service_handle(::open(GOLDFISH_ADDRESS_SPACE_DEVICE_NAME, O_RDWR), |
| channel.reset_and_get_address()); |
| if (status != ZX_OK) { |
| ALOGE("%s: failed to get service handle for " GOLDFISH_ADDRESS_SPACE_DEVICE_NAME ": %d", |
| __FUNCTION__, status); |
| return; |
| } |
| m_device.Bind(std::move(channel)); |
| } |
| |
| GoldfishAddressSpaceBlockProvider::~GoldfishAddressSpaceBlockProvider() |
| { |
| } |
| |
| bool GoldfishAddressSpaceBlockProvider::is_opened() const |
| { |
| return m_device.is_bound(); |
| } |
| |
| // void GoldfishAddressSpaceBlockProvider::close() - not implemented |
| // address_space_handle_t GoldfishAddressSpaceBlockProvider::release() - not imeplemented |
| |
| GoldfishAddressSpaceBlock::GoldfishAddressSpaceBlock() |
| : m_device(NULL) |
| , m_vmo(ZX_HANDLE_INVALID) |
| , m_mmaped_ptr(NULL) |
| , m_phys_addr(0) |
| , m_host_addr(0) |
| , m_offset(0) |
| , m_size(0) {} |
| |
| GoldfishAddressSpaceBlock::~GoldfishAddressSpaceBlock() |
| { |
| destroy(); |
| } |
| |
| GoldfishAddressSpaceBlock &GoldfishAddressSpaceBlock::operator=(const GoldfishAddressSpaceBlock &rhs) |
| { |
| m_vmo = rhs.m_vmo; |
| m_mmaped_ptr = rhs.m_mmaped_ptr; |
| m_phys_addr = rhs.m_phys_addr; |
| m_host_addr = rhs.m_host_addr; |
| m_offset = rhs.m_offset; |
| m_size = rhs.m_size; |
| m_device = rhs.m_device; |
| |
| return *this; |
| } |
| |
| bool GoldfishAddressSpaceBlock::allocate(GoldfishAddressSpaceBlockProvider *provider, size_t size) |
| { |
| ALOGD("%s: Ask for block of size 0x%llx\n", __func__, |
| (unsigned long long)size); |
| |
| destroy(); |
| |
| if (!provider->is_opened()) { |
| return false; |
| } |
| |
| fuchsia::hardware::goldfish::address::space::DeviceSyncPtr* device = &provider->m_device; |
| |
| int32_t res = ZX_OK; |
| zx::vmo vmo; |
| zx_status_t status = (*device)->AllocateBlock(size, &res, &m_phys_addr, &vmo); |
| if (status != ZX_OK || res != ZX_OK) { |
| ALOGE("%s: allocate block failed: %d:%d", __func__, status, res); |
| return false; |
| } |
| |
| m_offset = 0; |
| m_size = size; |
| m_vmo = vmo.release(); |
| |
| ALOGD("%s: allocate returned offset 0x%llx size 0x%llx\n", __func__, |
| (unsigned long long)m_offset, |
| (unsigned long long)m_size); |
| |
| m_device = device; |
| return true; |
| } |
| |
| uint64_t GoldfishAddressSpaceBlock::physAddr() const |
| { |
| return m_phys_addr; |
| } |
| |
| uint64_t GoldfishAddressSpaceBlock::hostAddr() const |
| { |
| return m_host_addr; |
| } |
| |
| void *GoldfishAddressSpaceBlock::mmap(uint64_t host_addr) |
| { |
| if (m_size == 0) { |
| ALOGE("%s: called with zero size\n", __func__); |
| return NULL; |
| } |
| if (m_mmaped_ptr) { |
| ALOGE("'mmap' called for an already mmaped address block"); |
| ::abort(); |
| } |
| |
| zx_vaddr_t ptr = 0; |
| zx_status_t status = zx_vmar_map(zx_vmar_root_self(), |
| ZX_VM_PERM_READ | ZX_VM_PERM_WRITE, |
| 0, m_vmo, |
| m_offset, |
| m_size, |
| &ptr); |
| if (status != ZX_OK) { |
| ALOGE("%s: host memory map failed with size 0x%llx " |
| "off 0x%llx status %d\n", |
| __func__, |
| (unsigned long long)m_size, |
| (unsigned long long)m_offset, status); |
| return NULL; |
| } else { |
| m_mmaped_ptr = (void*)ptr; |
| m_host_addr = host_addr; |
| return guestPtr(); |
| } |
| } |
| |
| void *GoldfishAddressSpaceBlock::guestPtr() const |
| { |
| return reinterpret_cast<char *>(m_mmaped_ptr) + (m_host_addr & (PAGE_SIZE - 1)); |
| } |
| |
| void GoldfishAddressSpaceBlock::destroy() |
| { |
| if (m_mmaped_ptr && m_size) { |
| zx_vmar_unmap(zx_vmar_root_self(), |
| (zx_vaddr_t)m_mmaped_ptr, |
| m_size); |
| m_mmaped_ptr = NULL; |
| } |
| |
| if (m_size) { |
| zx_handle_close(m_vmo); |
| m_vmo = ZX_HANDLE_INVALID; |
| int32_t res = ZX_OK; |
| zx_status_t status = (*m_device)->DeallocateBlock(m_phys_addr, &res); |
| if (status != ZX_OK || res != ZX_OK) { |
| ALOGE("%s: deallocate block failed: %d:%d", __func__, status, res); |
| } |
| m_device = NULL; |
| m_phys_addr = 0; |
| m_host_addr = 0; |
| m_offset = 0; |
| m_size = 0; |
| } |
| } |
| |
| GoldfishAddressSpaceHostMemoryAllocator::GoldfishAddressSpaceHostMemoryAllocator() |
| { |
| } |
| |
| long GoldfishAddressSpaceHostMemoryAllocator::hostMalloc(GoldfishAddressSpaceBlock *block, size_t size) |
| { |
| return 0; |
| } |
| |
| void GoldfishAddressSpaceHostMemoryAllocator::hostFree(GoldfishAddressSpaceBlock *block) |
| { |
| } |