mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-23 12:22:08 +00:00
99 lines
3.1 KiB
C++
99 lines
3.1 KiB
C++
/*
|
|
* Copyright (c) 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 <mesosphere.hpp>
|
|
|
|
namespace ams::kern {
|
|
|
|
Result KIoRegion::Initialize(KIoPool *pool, KPhysicalAddress phys_addr, size_t size, ams::svc::MemoryMapping mapping, ams::svc::MemoryPermission perm) {
|
|
MESOSPHERE_ASSERT_THIS();
|
|
|
|
/* Set fields. */
|
|
m_physical_address = phys_addr;
|
|
m_size = size;
|
|
m_mapping = mapping;
|
|
m_permission = perm;
|
|
m_pool = pool;
|
|
m_is_mapped = false;
|
|
|
|
/* Add ourselves to our pool. */
|
|
R_TRY(m_pool->AddIoRegion(this));
|
|
|
|
/* Open a reference to our pool. */
|
|
m_pool->Open();
|
|
|
|
/* Mark ourselves as initialized. */
|
|
m_is_initialized = true;
|
|
|
|
R_SUCCEED();
|
|
}
|
|
|
|
void KIoRegion::Finalize() {
|
|
/* Remove ourselves from our pool. */
|
|
m_pool->RemoveIoRegion(this);
|
|
|
|
/* Close our reference to our pool. */
|
|
m_pool->Close();
|
|
}
|
|
|
|
Result KIoRegion::Map(KProcessAddress address, size_t size, ams::svc::MemoryPermission map_perm) {
|
|
MESOSPHERE_ASSERT_THIS();
|
|
|
|
/* Check that the desired perm is allowable. */
|
|
R_UNLESS((m_permission | map_perm) == m_permission, svc::ResultInvalidNewMemoryPermission());
|
|
|
|
/* Check that the size is correct. */
|
|
R_UNLESS(size == m_size, svc::ResultInvalidSize());
|
|
|
|
/* Lock ourselves. */
|
|
KScopedLightLock lk(m_lock);
|
|
|
|
/* Check that we're not already mapped. */
|
|
R_UNLESS(!m_is_mapped, svc::ResultInvalidState());
|
|
|
|
/* Map ourselves. */
|
|
R_TRY(GetCurrentProcess().GetPageTable().MapIoRegion(address, m_physical_address, size, m_mapping, map_perm));
|
|
|
|
/* Add ourselves to the current process. */
|
|
GetCurrentProcess().AddIoRegion(this);
|
|
|
|
/* Note that we're mapped. */
|
|
m_is_mapped = true;
|
|
|
|
R_SUCCEED();
|
|
}
|
|
|
|
Result KIoRegion::Unmap(KProcessAddress address, size_t size) {
|
|
MESOSPHERE_ASSERT_THIS();
|
|
|
|
/* Check that the size is correct. */
|
|
R_UNLESS(size == m_size, svc::ResultInvalidSize());
|
|
|
|
/* Lock ourselves. */
|
|
KScopedLightLock lk(m_lock);
|
|
|
|
/* Unmap ourselves. */
|
|
R_TRY(GetCurrentProcess().GetPageTable().UnmapIoRegion(address, m_physical_address, size, m_mapping));
|
|
|
|
/* Remove ourselves from the current process. */
|
|
GetCurrentProcess().RemoveIoRegion(this);
|
|
|
|
/* Note that we're unmapped. */
|
|
m_is_mapped = false;
|
|
|
|
R_SUCCEED();
|
|
}
|
|
|
|
}
|