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intel/gpu: support 64bit pci bars

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by using the io_mem RPC of the platform session instead of parsing the
bar resources manually. This commits avoids and breakage on systems where
the Intel graphic cards just uses 64bits with addresses above 4G.

Issue #4450
This commit is contained in:
Alexander Boettcher 2022-03-28 11:01:33 +02:00 committed by Christian Helmuth
parent e955444302
commit 664676a2b4
1 changed files with 19 additions and 8 deletions
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27
repos/os/src/drivers/gpu/intel/resources.h
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@ -64,7 +64,7 @@ class Igd::Resources : Genode::Noncopyable
/* mmio + ggtt */
Platform::Device::Resource _gttmmadr { };
Io_mem_dataspace_capability _gttmmadr_ds { };
Genode::Constructible<Io_mem_connection> _gttmmadr_io { };
Genode::Io_mem_session_capability _gttmmadr_io { };
addr_t _gttmmadr_local { 0 };
Genode::Constructible<Igd::Mmio> _mmio { };
@ -89,7 +89,7 @@ class Igd::Resources : Genode::Noncopyable
Platform::Device::Resource _gmadr { };
Io_mem_dataspace_capability _gmadr_ds { };
Genode::Constructible<Io_mem_connection> _gmadr_io { };
Genode::Io_mem_session_capability _gmadr_io { };
Genode::Region_map_client _gmadr_rm { _rm_connection.create(APERTURE_RESERVED) };
@ -241,14 +241,25 @@ class Igd::Resources : Genode::Noncopyable
_gpu_client.construct(_gpu_cap);
_gttmmadr = _gpu_client->resource(0);
_gttmmadr_io.construct(_env, _gttmmadr.base(), _gttmmadr.size());
_gttmmadr_ds = _gttmmadr_io->dataspace();
/*
* The intel display driver (as client of this gpu driver)
* uses the platform.io_mem() cap interface to obtain the io_mem
* capabilities. The need for directly handling with the physical
* io_mem addresses is not desired and the legacy path. So dummy
* addresses are used here just as placeholder for implementing
* the platform.resource() RPC interface.
*/
_gmadr = _gpu_client->resource(2);
_gmadr_io.construct(_env, _gmadr.base(), _gmadr.size(), true);
_gmadr_ds = _gmadr_io->dataspace();
_gttmmadr_io = _gpu_client->io_mem(0);
_gttmmadr_ds = Genode::Io_mem_session_client(_gttmmadr_io).dataspace();
_gttmmadr = Platform::Device::Resource(1u << 30 /* dummy */,
Genode::Dataspace_client(_gttmmadr_ds).size());
_gmadr_io = _gpu_client->io_mem(1, Genode::Cache::WRITE_COMBINED);
_gmadr_ds = Genode::Io_mem_session_client(_gmadr_io).dataspace();
_gmadr_rm.attach_at(_gmadr_ds, 0, APERTURE_RESERVED);
_gmadr = Platform::Device::Resource(1u << 29 /* dummy */,
Genode::Dataspace_client(_gmadr_ds).size());
_enable_pci_bus_master();