From 6e99df5741b3332dcceb86915b2818af640c51f9 Mon Sep 17 00:00:00 2001 From: Ben Goz Date: Thu, 17 Jul 2014 00:36:17 +0300 Subject: amdkfd: Add mqd_manager module The mqd_manager module handles MQD data structures. MQD stands for Memory Queue Descriptor, which is used by the H/W to keep the usermode queue state in memory. v3: Removed new typedefs Removed pragma pack 4 Remove cik_mqds.h file Changed lower_32/upper_32 calls to use linux macros Used new gart allocation functions Added documentation v4: Added missing initialization of the addr field in init_mqd() Setting the hqd persistent.preload_req bit ON so that when queues switches on/off, their context will kept and read from the mqd when the cp reassign them, and thus the dispatched workload context kept consistent without any interrupts. v5: Move amdkfd from drm/radeon/ to drm/amd/ Change format of mqd structure to match latest KV firmware Add support for AQL queues creation to enable working with open-source HSA runtime. Various fixes Signed-off-by: Ben Goz Signed-off-by: Oded Gabbay --- drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h | 91 ++++++++++++++++++++++++++++ 1 file changed, 91 insertions(+) create mode 100644 drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h (limited to 'drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h') diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h new file mode 100644 index 000000000000..213a71e0b6c7 --- /dev/null +++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h @@ -0,0 +1,91 @@ +/* + * Copyright 2014 Advanced Micro Devices, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + */ + +#ifndef KFD_MQD_MANAGER_H_ +#define KFD_MQD_MANAGER_H_ + +#include "kfd_priv.h" + +/** + * struct mqd_manager + * + * @init_mqd: Allocates the mqd buffer on local gpu memory and initialize it. + * + * @load_mqd: Loads the mqd to a concrete hqd slot. Used only for no cp + * scheduling mode. + * + * @update_mqd: Handles a update call for the MQD + * + * @destroy_mqd: Destroys the HQD slot and by that preempt the relevant queue. + * Used only for no cp scheduling. + * + * @uninit_mqd: Releases the mqd buffer from local gpu memory. + * + * @is_occupied: Checks if the relevant HQD slot is occupied. + * + * @mqd_mutex: Mqd manager mutex. + * + * @dev: The kfd device structure coupled with this module. + * + * MQD stands for Memory Queue Descriptor which represents the current queue + * state in the memory and initiate the HQD (Hardware Queue Descriptor) state. + * This structure is actually a base class for the different types of MQDs + * structures for the variant ASICs that should be supported in the future. + * This base class is also contains all the MQD specific operations. + * Another important thing to mention is that each queue has a MQD that keeps + * his state (or context) after each preemption or reassignment. + * Basically there are a instances of the mqd manager class per MQD type per + * ASIC. Currently the kfd driver supports only Kaveri so there are instances + * per KFD_MQD_TYPE for each device. + * + */ + +struct mqd_manager { + int (*init_mqd)(struct mqd_manager *mm, void **mqd, + struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr, + struct queue_properties *q); + + int (*load_mqd)(struct mqd_manager *mm, void *mqd, + uint32_t pipe_id, uint32_t queue_id, + uint32_t __user *wptr); + + int (*update_mqd)(struct mqd_manager *mm, void *mqd, + struct queue_properties *q); + + int (*destroy_mqd)(struct mqd_manager *mm, void *mqd, + enum kfd_preempt_type type, + unsigned int timeout, uint32_t pipe_id, + uint32_t queue_id); + + void (*uninit_mqd)(struct mqd_manager *mm, void *mqd, + struct kfd_mem_obj *mqd_mem_obj); + + bool (*is_occupied)(struct mqd_manager *mm, void *mqd, + uint64_t queue_address, uint32_t pipe_id, + uint32_t queue_id); + + struct mutex mqd_mutex; + struct kfd_dev *dev; +}; + +#endif /* KFD_MQD_MANAGER_H_ */ -- cgit v1.2.3