mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-12-23 10:52:13 +00:00
55 lines
1.9 KiB
C++
55 lines
1.9 KiB
C++
/*
|
|
* 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>
|
|
|
|
namespace ams::dd {
|
|
|
|
uintptr_t QueryIoMapping(uintptr_t phys_addr, size_t size) {
|
|
u64 virtual_addr;
|
|
const u64 aligned_addr = util::AlignDown(phys_addr, os::MemoryPageSize);
|
|
const size_t offset = phys_addr - aligned_addr;
|
|
const u64 aligned_size = size + offset;
|
|
R_TRY_CATCH(svcQueryIoMapping(&virtual_addr, aligned_addr, aligned_size)) {
|
|
/* Official software handles this by returning 0. */
|
|
R_CATCH(svc::ResultNotFound) { return 0; }
|
|
} R_END_TRY_CATCH_WITH_ABORT_UNLESS;
|
|
|
|
return static_cast<uintptr_t>(virtual_addr + offset);
|
|
}
|
|
|
|
namespace {
|
|
|
|
inline u32 ReadWriteRegisterImpl(uintptr_t phys_addr, u32 value, u32 mask) {
|
|
u32 out_value;
|
|
R_ABORT_UNLESS(svcReadWriteRegister(&out_value, phys_addr, mask, value));
|
|
return out_value;
|
|
}
|
|
|
|
}
|
|
|
|
u32 ReadRegister(uintptr_t phys_addr) {
|
|
return ReadWriteRegisterImpl(phys_addr, 0, 0);
|
|
}
|
|
|
|
void WriteRegister(uintptr_t phys_addr, u32 value) {
|
|
ReadWriteRegisterImpl(phys_addr, value, ~u32());
|
|
}
|
|
|
|
u32 ReadWriteRegister(uintptr_t phys_addr, u32 value, u32 mask) {
|
|
return ReadWriteRegisterImpl(phys_addr, value, mask);
|
|
}
|
|
|
|
}
|