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gpu: reflect CAP shortage during buffer management

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Allocating and mapping buffers not only consumes RAM quota, it consumes
CAP quota as well. Extended the Gpu session to allow for dealing with
that on the client side.

On a side note, the amount of initial CAP quota needed to establish
a connection is increased to cover the current costs of the Intel
GPU multiplexer.

Issue #4284.
This commit is contained in:
Josef Söntgen 2021-10-04 18:29:21 +02:00 committed by Norman Feske
parent 27e55dab3e
commit f6d845e630
1 changed files with 7 additions and 4 deletions
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11
repos/os/include/gpu_session/gpu_session.h
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@ -72,7 +72,7 @@ struct Gpu::Session : public Genode::Session
struct Conflicting_id : Genode::Exception { };
struct Mapping_buffer_failed : Genode::Exception { };
enum { REQUIRED_QUOTA = 1024 * 1024, CAP_QUOTA = 8, };
enum { REQUIRED_QUOTA = 1024 * 1024, CAP_QUOTA = 256, };
static const char *service_name() { return "Gpu"; }
@ -145,6 +145,8 @@ struct Gpu::Session : public Genode::Session
* \param attrs specify how the buffer is mapped
*
* \throw Mapping_buffer_failed
* \throw Out_of_caps
* \throw Out_of_ram
*/
virtual Genode::Dataspace_capability map_buffer(Buffer_id id,
bool aperture,
@ -164,6 +166,7 @@ struct Gpu::Session : public Genode::Session
* \param va virtual address
*
* \throw Mapping_buffer_failed
* \throw Out_of_caps
* \throw Out_of_ram
*/
virtual bool map_buffer_ppgtt(Buffer_id id, Gpu::addr_t va) = 0;
@ -196,16 +199,16 @@ struct Gpu::Session : public Genode::Session
GENODE_RPC(Rpc_completion_sigh, void, completion_sigh,
Genode::Signal_context_capability);
GENODE_RPC_THROW(Rpc_alloc_buffer, Genode::Dataspace_capability, alloc_buffer,
GENODE_TYPE_LIST(Out_of_ram),
GENODE_TYPE_LIST(Out_of_caps, Out_of_ram),
Gpu::Buffer_id, Genode::size_t);
GENODE_RPC(Rpc_free_buffer, void, free_buffer, Gpu::Buffer_id);
GENODE_RPC_THROW(Rpc_map_buffer, Genode::Dataspace_capability, map_buffer,
GENODE_TYPE_LIST(Mapping_buffer_failed, Out_of_ram),
GENODE_TYPE_LIST(Mapping_buffer_failed, Out_of_caps, Out_of_ram),
Gpu::Buffer_id, bool, Gpu::Mapping_attributes);
GENODE_RPC(Rpc_unmap_buffer, void, unmap_buffer,
Gpu::Buffer_id);
GENODE_RPC_THROW(Rpc_map_buffer_ppgtt, bool, map_buffer_ppgtt,
GENODE_TYPE_LIST(Mapping_buffer_failed, Out_of_ram),
GENODE_TYPE_LIST(Mapping_buffer_failed, Out_of_caps, Out_of_ram),
Gpu::Buffer_id, Gpu::addr_t);
GENODE_RPC(Rpc_unmap_buffer_ppgtt, void, unmap_buffer_ppgtt,
Gpu::Buffer_id, Gpu::addr_t);