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dd: implement DeviceAddressSpaceType api

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Michael Scire 2020-11-08 15:27:55 -08:00 • committed by SciresM
parent 708f5bf1fb
commit 4d1c4f1677
15 changed files with 626 additions and 52 deletions
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190
libraries/libstratosphere/source/dd/dd_device_address_space.cpp Normal file
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/*
* Copyright (c) 2018-2020 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stratosphere.hpp>
#include "impl/dd_device_address_space_impl.hpp"
namespace ams::dd {
Result CreateDeviceAddressSpace(DeviceAddressSpaceType *das, u64 address, u64 size) {
/* Check pre-conditions. */
AMS_ASSERT(util::IsAligned(address, os::MemoryPageSize));
AMS_ASSERT(util::IsAligned(size, os::MemoryPageSize));
AMS_ASSERT(size > 0);
/* Ensure we leave in a consistent state. */
auto state_guard = SCOPE_GUARD { das->state = DeviceAddressSpaceType::State_NotInitialized; };
/* Create the address space. */
DeviceAddressSpaceHandle handle;
R_TRY(impl::DeviceAddressSpaceImpl::Create(std::addressof(handle), address, size));
/* Set the values in the das. */
das->device_handle = handle;
das->is_handle_managed = true;
das->state = DeviceAddressSpaceType::State_Initialized;
/* We succeeded. */
state_guard.Cancel();
return ResultSuccess();
}
Result CreateDeviceAddressSpace(DeviceAddressSpaceType *das, u64 size) {
return CreateDeviceAddressSpace(das, 0, size);
}
void DestroyDeviceAddressSpace(DeviceAddressSpaceType *das) {
/* Check pre-conditions. */
AMS_ASSERT(das->state == DeviceAddressSpaceType::State_Initialized);
/* Destroy the handle. */
if (das->is_handle_managed) {
impl::DeviceAddressSpaceImpl::Close(das->device_handle);
}
das->device_handle = 0;
das->is_handle_managed = false;
das->state = DeviceAddressSpaceType::State_NotInitialized;
}
void AttachDeviceAddressSpaceHandle(DeviceAddressSpaceType *das, Handle handle, bool managed) {
/* Check pre-conditions. */
AMS_ASSERT(handle != svc::InvalidHandle);
das->device_handle = handle;
das->is_handle_managed = managed;
das->state = DeviceAddressSpaceType::State_Initialized;
}
Handle GetDeviceAddressSpaceHandle(DeviceAddressSpaceType *das) {
/* Check pre-conditions. */
AMS_ASSERT(das->state == DeviceAddressSpaceType::State_Initialized);
return das->device_handle;
}
Result MapDeviceAddressSpaceAligned(DeviceAddressSpaceType *das, ProcessHandle process_handle, u64 process_address, size_t size, DeviceVirtualAddress device_address, MemoryPermission device_perm) {
/* Check pre-conditions. */
AMS_ASSERT(das->state == DeviceAddressSpaceType::State_Initialized);
AMS_ASSERT(util::IsAligned(process_address, os::MemoryPageSize));
AMS_ASSERT(util::IsAligned(device_address, os::MemoryPageSize));
AMS_ASSERT(util::IsAligned(size, os::MemoryPageSize));
AMS_ASSERT(process_address + size > process_address);
AMS_ASSERT(device_address + size > device_address);
AMS_ASSERT(size > 0);
AMS_ASSERT((process_address & (4_MB - 1)) == (device_address & (4_MB - 1)));
return impl::DeviceAddressSpaceImpl::MapAligned(das->device_handle, process_handle, process_address, size, device_address, device_perm);
}
Result MapDeviceAddressSpaceNotAligned(DeviceAddressSpaceType *das, ProcessHandle process_handle, u64 process_address, size_t size, DeviceVirtualAddress device_address, MemoryPermission device_perm) {
/* Check pre-conditions. */
AMS_ASSERT(das->state == DeviceAddressSpaceType::State_Initialized);
AMS_ASSERT(util::IsAligned(process_address, os::MemoryPageSize));
AMS_ASSERT(util::IsAligned(device_address, os::MemoryPageSize));
AMS_ASSERT(util::IsAligned(size, os::MemoryPageSize));
AMS_ASSERT(process_address + size > process_address);
AMS_ASSERT(device_address + size > device_address);
AMS_ASSERT(size > 0);
return impl::DeviceAddressSpaceImpl::MapNotAligned(das->device_handle, process_handle, process_address, size, device_address, device_perm);
}
void UnmapDeviceAddressSpace(DeviceAddressSpaceType *das, ProcessHandle process_handle, u64 process_address, size_t size, DeviceVirtualAddress device_address) {
/* Check pre-conditions. */
AMS_ASSERT(das->state == DeviceAddressSpaceType::State_Initialized);
AMS_ASSERT(util::IsAligned(process_address, os::MemoryPageSize));
AMS_ASSERT(util::IsAligned(device_address, os::MemoryPageSize));
AMS_ASSERT(util::IsAligned(size, os::MemoryPageSize));
AMS_ASSERT(process_address + size > process_address);
AMS_ASSERT(device_address + size > device_address);
AMS_ASSERT(size > 0);
return impl::DeviceAddressSpaceImpl::Unmap(das->device_handle, process_handle, process_address, size, device_address);
}
void InitializeDeviceAddressSpaceMapInfo(DeviceAddressSpaceMapInfo *info, DeviceAddressSpaceType *das, ProcessHandle process_handle, u64 process_address, size_t size, DeviceVirtualAddress device_address, MemoryPermission device_perm) {
/* Check pre-conditions. */
AMS_ASSERT(das->state == DeviceAddressSpaceType::State_Initialized);
AMS_ASSERT(util::IsAligned(process_address, os::MemoryPageSize));
AMS_ASSERT(util::IsAligned(device_address, os::MemoryPageSize));
AMS_ASSERT(util::IsAligned(size, os::MemoryPageSize));
AMS_ASSERT(process_address + size > process_address);
AMS_ASSERT(device_address + size > device_address);
AMS_ASSERT(size > 0);
info->last_mapped_size = 0;
info->process_address = process_address;
info->size = size;
info->device_start_address = device_address;
info->device_end_address = device_address + size;
info->process_handle = process_handle;
info->device_permission = device_perm;
info->device_address_space = das;
}
Result MapNextDeviceAddressSpaceRegion(size_t *out_mapped_size, DeviceAddressSpaceMapInfo *info) {
/* Check pre-conditions. */
AMS_ASSERT(info->last_mapped_size == 0);
size_t mapped_size = 0;
if (info->device_start_address < info->device_end_address) {
R_TRY(impl::DeviceAddressSpaceImpl::MapPartially(std::addressof(mapped_size), info->device_address_space->device_handle, info->process_handle, info->process_address, info->size, info->device_start_address, info->device_permission));
}
info->last_mapped_size = mapped_size;
*out_mapped_size = mapped_size;
return ResultSuccess();
}
void UnmapDeviceAddressSpaceRegion(DeviceAddressSpaceMapInfo *info) {
/* Check pre-conditions. */
const size_t last_mapped_size = info->last_mapped_size;
AMS_ASSERT(last_mapped_size > 0);
impl::DeviceAddressSpaceImpl::Unmap(info->device_address_space->device_handle, info->process_handle, info->process_address, last_mapped_size, info->device_start_address);
info->last_mapped_size = 0;
info->process_address += last_mapped_size;
info->device_start_address += last_mapped_size;
}
u64 GetMappedProcessAddress(DeviceAddressSpaceMapInfo *info) {
return info->process_address;
}
DeviceVirtualAddress GetMappedDeviceVirtualAddress(DeviceAddressSpaceMapInfo *info) {
return info->device_start_address;
}
size_t GetMappedSize(DeviceAddressSpaceMapInfo *info) {
return info->last_mapped_size;
}
Result AttachDeviceAddressSpace(DeviceAddressSpaceType *das, DeviceName device_name) {
/* Check pre-conditions. */
AMS_ASSERT(das->state == DeviceAddressSpaceType::State_Initialized);
return impl::DeviceAddressSpaceImpl::Attach(das, device_name);
}
void DetachDeviceAddressSpace(DeviceAddressSpaceType *das, DeviceName device_name) {
/* Check pre-conditions. */
AMS_ASSERT(das->state == DeviceAddressSpaceType::State_Initialized);
return impl::DeviceAddressSpaceImpl::Detach(das, device_name);
}
}