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[fb] Create fb driver

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Create a new framebuffer driver. Also hackily passing frame buffer size
in the list of init handles to all processes and mapping the framebuffer
into all processes. Changed bootloader passing frame buffer as a module
to its own struct.
This commit is contained in:
Justin C. Miller
2020-12-27 18:49:38 -08:00
committed by Justin C. Miller
parent e70eb5a926
commit 19cbf1ca67
15 changed files with 170 additions and 71 deletions
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12
src/kernel/vm_mapper.cpp
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@@ -30,6 +30,14 @@ vm_mapper_single::unmap(uintptr_t offset, size_t count)
m_space.clear(m_area, offset, count, true);
}
void
vm_mapper_single::remove(vm_space *space)
{
size_t count = memory::page_count(m_area.size());
bool keep = m_area.flags() && vm_flags::mmio;
m_space.clear(m_area, 0, count, !keep);
}
vm_mapper_multi::vm_mapper_multi(vm_area &area) :
@@ -88,11 +96,13 @@ void
vm_mapper_multi::remove(vm_space *space)
{
size_t count = memory::page_count(m_area.size());
bool keep = m_area.flags() && vm_flags::mmio;
for (int i = 0; i < m_spaces.count(); ++i) {
if (m_spaces[i] == space) {
m_spaces.remove_swap_at(i);
space->clear(m_area, 0, count, m_spaces.count() == 0);
keep &= m_spaces.count() > 0;
space->clear(m_area, 0, count, !keep);
}
}
}