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x86: claim extended pci config io memory lazily

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Issue #1740
This commit is contained in:
Alexander Boettcher 2015-10-06 15:04:57 +02:00 committed by Christian Helmuth
parent bdaf79e3b8
commit 2b2587fde9
1 changed files with 13 additions and 8 deletions
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21
repos/os/src/drivers/platform/spec/x86/pci_device_component.h
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@ -200,14 +200,6 @@ class Platform::Device_component : public Genode::Rpc_object<Platform::Device>,
_slab_ioport(md_alloc, &_slab_ioport_block),
_slab_iomem(md_alloc, &_slab_iomem_block)
{
if (_config_space != ~0UL) {
try {
Genode::Io_mem_connection conn(_config_space, 0x1000);
conn.on_destruction(Genode::Io_mem_connection::KEEP_OPEN);
_io_mem_config_extended = conn;
} catch (Genode::Parent::Service_denied) { }
}
_ep->manage(&_irq_session);
for (unsigned i = 0; i < Device::NUM_RESOURCES; i++) {
@ -308,6 +300,19 @@ class Platform::Device_component : public Genode::Rpc_object<Platform::Device>,
Genode::Io_mem_dataspace_capability get_config_space()
{
if (_config_space == ~0UL)
return Genode::Io_mem_dataspace_capability();
if (!_io_mem_config_extended.valid()) {
try {
Genode::Io_mem_connection conn(_config_space, 0x1000);
conn.on_destruction(Genode::Io_mem_connection::KEEP_OPEN);
_io_mem_config_extended = conn;
} catch (...) {
_config_space = ~0UL;
}
}
if (!_io_mem_config_extended.valid())
return Genode::Io_mem_dataspace_capability();