This patch-set enables amdkfd to provide the ability to HSA processes to create SDMA user-mode queues.
The queues can be scheduled on either one of Kaveri's two SDMA engines. The assignment is done during the creation of the queue and it is alternating between the first engine and the second. e.g. first SDMA queue will be assigned to engine 1, second SDMA queue will be assigned to engine 2, third SDMA queue will be assigned to engine 1 and so forth.
The creation and destruction of the queues is done through the same IOCTLs that are used to create regular compute queues. The identification in the create queue ioctl is done by using the queue_type argument that is passed by the HSA process to the amdkfd. That argument is already present in the current interface so it is backward compatible.
The patch-set adds four new functions to the interface between kfd and kgd. Three of those functions are used only in no-HWS mode, which is used when during debug and bring-up.
The main abstraction is done at the MQD level, which has a different layout than a compute MQD.
Oded Gabbay
Ben Goz (6): drm/amd: Add SDMA functions to kfd-->kgd interface drm/radeon: Implement SDMA interface functions amdkfd: Add SDMA mqd support amdkfd: Add SDMA user-mode queues support to QCM amdkfd: Identify SDMA queue in create queue ioctl amdkfd: Pass queue type to pqm_create_queue()
drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 6 +- .../gpu/drm/amd/amdkfd/kfd_device_queue_manager.c | 167 ++++++++++++++++- .../gpu/drm/amd/amdkfd/kfd_device_queue_manager.h | 5 + drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c | 121 +++++++++++++ drivers/gpu/drm/amd/amdkfd/kfd_priv.h | 8 + .../gpu/drm/amd/amdkfd/kfd_process_queue_manager.c | 2 +- drivers/gpu/drm/amd/include/kgd_kfd_interface.h | 17 +- drivers/gpu/drm/radeon/cik_reg.h | 200 ++++++++++++++++++++- drivers/gpu/drm/radeon/radeon_kfd.c | 132 +++++++++++++- 9 files changed, 641 insertions(+), 17 deletions(-)