/* * 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. */ /* * This file defines the private interface between the * AMD kernel graphics drivers and the AMD KFD. */ #ifndef KGD_KFD_INTERFACE_H_INCLUDED #define KGD_KFD_INTERFACE_H_INCLUDED #include <linux/types.h> #include <linux/bitmap.h> #include <linux/dma-fence.h> #include "amdgpu_irq.h" #include "amdgpu_gfx.h" struct pci_dev; struct amdgpu_device; struct kfd_dev; struct kgd_mem; enum kfd_preempt_type { … }; struct kfd_vm_fault_info { … }; /* For getting GPU local memory information from KGD */ struct kfd_local_mem_info { … }; enum kgd_memory_pool { … }; /** * enum kfd_sched_policy * * @KFD_SCHED_POLICY_HWS: H/W scheduling policy known as command processor (cp) * scheduling. In this scheduling mode we're using the firmware code to * schedule the user mode queues and kernel queues such as HIQ and DIQ. * the HIQ queue is used as a special queue that dispatches the configuration * to the cp and the user mode queues list that are currently running. * the DIQ queue is a debugging queue that dispatches debugging commands to the * firmware. * in this scheduling mode user mode queues over subscription feature is * enabled. * * @KFD_SCHED_POLICY_HWS_NO_OVERSUBSCRIPTION: The same as above but the over * subscription feature disabled. * * @KFD_SCHED_POLICY_NO_HWS: no H/W scheduling policy is a mode which directly * set the command processor registers and sets the queues "manually". This * mode is used *ONLY* for debugging proposes. * */ enum kfd_sched_policy { … }; struct kgd2kfd_shared_resources { … }; struct tile_config { … }; #define KFD_MAX_NUM_OF_QUEUES_PER_DEVICE_DEFAULT … /** * struct kfd2kgd_calls * * @program_sh_mem_settings: A function that should initiate the memory * properties such as main aperture memory type (cache / non cached) and * secondary aperture base address, size and memory type. * This function is used only for no cp scheduling mode. * * @set_pasid_vmid_mapping: Exposes pasid/vmid pair to the H/W for no cp * scheduling mode. Only used for no cp scheduling mode. * * @hqd_load: Loads the mqd structure to a H/W hqd slot. used only for no cp * sceduling mode. * * @hqd_sdma_load: Loads the SDMA mqd structure to a H/W SDMA hqd slot. * used only for no HWS mode. * * @hqd_dump: Dumps CPC HQD registers to an array of address-value pairs. * Array is allocated with kmalloc, needs to be freed with kfree by caller. * * @hqd_sdma_dump: Dumps SDMA HQD registers to an array of address-value pairs. * Array is allocated with kmalloc, needs to be freed with kfree by caller. * * @hqd_is_occupies: Checks if a hqd slot is occupied. * * @hqd_destroy: Destructs and preempts the queue assigned to that hqd slot. * * @hqd_sdma_is_occupied: Checks if an SDMA hqd slot is occupied. * * @hqd_sdma_destroy: Destructs and preempts the SDMA queue assigned to that * SDMA hqd slot. * * @set_scratch_backing_va: Sets VA for scratch backing memory of a VMID. * Only used for no cp scheduling mode * * @set_vm_context_page_table_base: Program page table base for a VMID * * @invalidate_tlbs: Invalidate TLBs for a specific PASID * * @invalidate_tlbs_vmid: Invalidate TLBs for a specific VMID * * @read_vmid_from_vmfault_reg: On Hawaii the VMID is not set in the * IH ring entry. This function allows the KFD ISR to get the VMID * from the fault status register as early as possible. * * @get_cu_occupancy: Function pointer that returns to caller the number * of wave fronts that are in flight for all of the queues of a process * as identified by its pasid. It is important to note that the value * returned by this function is a snapshot of current moment and cannot * guarantee any minimum for the number of waves in-flight. This function * is defined for devices that belong to GFX9 and later GFX families. Care * must be taken in calling this function as it is not defined for devices * that belong to GFX8 and below GFX families. * * This structure contains function pointers to services that the kgd driver * provides to amdkfd driver. * */ struct kfd2kgd_calls { … }; #endif /* KGD_KFD_INTERFACE_H_INCLUDED */
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