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Allows assigning a PASID to a VM for identifying VMs involved in page faults. The global PASID manager is also exported in the KFD interface so that AMDGPU and KFD can share the PASID space. PASIDs of different sizes can be requested. On APUs, the PASID size is deterined by the capabilities of the IOMMU. So KFD must be able to allocate PASIDs in a smaller range. Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
265 lines
8.1 KiB
C
265 lines
8.1 KiB
C
/*
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* Copyright 2014 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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/*
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* This file defines the private interface between the
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* AMD kernel graphics drivers and the AMD KFD.
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*/
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#ifndef KGD_KFD_INTERFACE_H_INCLUDED
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#define KGD_KFD_INTERFACE_H_INCLUDED
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#include <linux/types.h>
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#include <linux/bitmap.h>
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struct pci_dev;
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#define KFD_INTERFACE_VERSION 2
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#define KGD_MAX_QUEUES 128
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struct kfd_dev;
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struct kgd_dev;
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struct kgd_mem;
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enum kfd_preempt_type {
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KFD_PREEMPT_TYPE_WAVEFRONT_DRAIN = 0,
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KFD_PREEMPT_TYPE_WAVEFRONT_RESET,
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};
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enum kgd_memory_pool {
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KGD_POOL_SYSTEM_CACHEABLE = 1,
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KGD_POOL_SYSTEM_WRITECOMBINE = 2,
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KGD_POOL_FRAMEBUFFER = 3,
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};
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enum kgd_engine_type {
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KGD_ENGINE_PFP = 1,
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KGD_ENGINE_ME,
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KGD_ENGINE_CE,
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KGD_ENGINE_MEC1,
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KGD_ENGINE_MEC2,
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KGD_ENGINE_RLC,
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KGD_ENGINE_SDMA1,
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KGD_ENGINE_SDMA2,
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KGD_ENGINE_MAX
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};
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struct kgd2kfd_shared_resources {
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/* Bit n == 1 means VMID n is available for KFD. */
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unsigned int compute_vmid_bitmap;
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/* number of pipes per mec */
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uint32_t num_pipe_per_mec;
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/* number of queues per pipe */
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uint32_t num_queue_per_pipe;
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/* Bit n == 1 means Queue n is available for KFD */
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DECLARE_BITMAP(queue_bitmap, KGD_MAX_QUEUES);
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/* Base address of doorbell aperture. */
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phys_addr_t doorbell_physical_address;
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/* Size in bytes of doorbell aperture. */
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size_t doorbell_aperture_size;
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/* Number of bytes at start of aperture reserved for KGD. */
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size_t doorbell_start_offset;
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};
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struct tile_config {
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uint32_t *tile_config_ptr;
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uint32_t *macro_tile_config_ptr;
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uint32_t num_tile_configs;
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uint32_t num_macro_tile_configs;
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uint32_t gb_addr_config;
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uint32_t num_banks;
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uint32_t num_ranks;
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};
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/**
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* struct kfd2kgd_calls
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*
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* @init_gtt_mem_allocation: Allocate a buffer on the gart aperture.
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* The buffer can be used for mqds, hpds, kernel queue, fence and runlists
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*
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* @free_gtt_mem: Frees a buffer that was allocated on the gart aperture
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*
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* @get_vmem_size: Retrieves (physical) size of VRAM
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*
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* @get_gpu_clock_counter: Retrieves GPU clock counter
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*
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* @get_max_engine_clock_in_mhz: Retrieves maximum GPU clock in MHz
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*
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* @alloc_pasid: Allocate a PASID
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* @free_pasid: Free a PASID
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*
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* @program_sh_mem_settings: A function that should initiate the memory
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* properties such as main aperture memory type (cache / non cached) and
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* secondary aperture base address, size and memory type.
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* This function is used only for no cp scheduling mode.
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*
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* @set_pasid_vmid_mapping: Exposes pasid/vmid pair to the H/W for no cp
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* scheduling mode. Only used for no cp scheduling mode.
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*
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* @init_pipeline: Initialized the compute pipelines.
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*
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* @hqd_load: Loads the mqd structure to a H/W hqd slot. used only for no cp
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* sceduling mode.
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*
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* @hqd_sdma_load: Loads the SDMA mqd structure to a H/W SDMA hqd slot.
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* used only for no HWS mode.
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*
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* @hqd_is_occupies: Checks if a hqd slot is occupied.
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*
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* @hqd_destroy: Destructs and preempts the queue assigned to that hqd slot.
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*
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* @hqd_sdma_is_occupied: Checks if an SDMA hqd slot is occupied.
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*
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* @hqd_sdma_destroy: Destructs and preempts the SDMA queue assigned to that
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* SDMA hqd slot.
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*
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* @get_fw_version: Returns FW versions from the header
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*
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* @set_scratch_backing_va: Sets VA for scratch backing memory of a VMID.
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* Only used for no cp scheduling mode
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*
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* @get_tile_config: Returns GPU-specific tiling mode information
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*
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* This structure contains function pointers to services that the kgd driver
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* provides to amdkfd driver.
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*
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*/
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struct kfd2kgd_calls {
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int (*init_gtt_mem_allocation)(struct kgd_dev *kgd, size_t size,
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void **mem_obj, uint64_t *gpu_addr,
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void **cpu_ptr);
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void (*free_gtt_mem)(struct kgd_dev *kgd, void *mem_obj);
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uint64_t (*get_vmem_size)(struct kgd_dev *kgd);
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uint64_t (*get_gpu_clock_counter)(struct kgd_dev *kgd);
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uint32_t (*get_max_engine_clock_in_mhz)(struct kgd_dev *kgd);
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int (*alloc_pasid)(unsigned int bits);
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void (*free_pasid)(unsigned int pasid);
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/* Register access functions */
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void (*program_sh_mem_settings)(struct kgd_dev *kgd, uint32_t vmid,
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uint32_t sh_mem_config, uint32_t sh_mem_ape1_base,
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uint32_t sh_mem_ape1_limit, uint32_t sh_mem_bases);
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int (*set_pasid_vmid_mapping)(struct kgd_dev *kgd, unsigned int pasid,
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unsigned int vmid);
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int (*init_pipeline)(struct kgd_dev *kgd, uint32_t pipe_id,
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uint32_t hpd_size, uint64_t hpd_gpu_addr);
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int (*init_interrupts)(struct kgd_dev *kgd, uint32_t pipe_id);
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int (*hqd_load)(struct kgd_dev *kgd, void *mqd, uint32_t pipe_id,
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uint32_t queue_id, uint32_t __user *wptr,
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uint32_t wptr_shift, uint32_t wptr_mask,
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struct mm_struct *mm);
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int (*hqd_sdma_load)(struct kgd_dev *kgd, void *mqd);
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bool (*hqd_is_occupied)(struct kgd_dev *kgd, uint64_t queue_address,
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uint32_t pipe_id, uint32_t queue_id);
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int (*hqd_destroy)(struct kgd_dev *kgd, void *mqd, uint32_t reset_type,
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unsigned int timeout, uint32_t pipe_id,
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uint32_t queue_id);
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bool (*hqd_sdma_is_occupied)(struct kgd_dev *kgd, void *mqd);
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int (*hqd_sdma_destroy)(struct kgd_dev *kgd, void *mqd,
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unsigned int timeout);
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int (*address_watch_disable)(struct kgd_dev *kgd);
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int (*address_watch_execute)(struct kgd_dev *kgd,
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unsigned int watch_point_id,
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uint32_t cntl_val,
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uint32_t addr_hi,
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uint32_t addr_lo);
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int (*wave_control_execute)(struct kgd_dev *kgd,
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uint32_t gfx_index_val,
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uint32_t sq_cmd);
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uint32_t (*address_watch_get_offset)(struct kgd_dev *kgd,
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unsigned int watch_point_id,
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unsigned int reg_offset);
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bool (*get_atc_vmid_pasid_mapping_valid)(
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struct kgd_dev *kgd,
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uint8_t vmid);
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uint16_t (*get_atc_vmid_pasid_mapping_pasid)(
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struct kgd_dev *kgd,
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uint8_t vmid);
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void (*write_vmid_invalidate_request)(struct kgd_dev *kgd,
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uint8_t vmid);
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uint16_t (*get_fw_version)(struct kgd_dev *kgd,
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enum kgd_engine_type type);
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void (*set_scratch_backing_va)(struct kgd_dev *kgd,
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uint64_t va, uint32_t vmid);
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int (*get_tile_config)(struct kgd_dev *kgd, struct tile_config *config);
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};
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/**
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* struct kgd2kfd_calls
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*
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* @exit: Notifies amdkfd that kgd module is unloaded
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*
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* @probe: Notifies amdkfd about a probe done on a device in the kgd driver.
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*
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* @device_init: Initialize the newly probed device (if it is a device that
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* amdkfd supports)
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*
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* @device_exit: Notifies amdkfd about a removal of a kgd device
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*
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* @suspend: Notifies amdkfd about a suspend action done to a kgd device
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*
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* @resume: Notifies amdkfd about a resume action done to a kgd device
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*
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* This structure contains function callback pointers so the kgd driver
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* will notify to the amdkfd about certain status changes.
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*
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*/
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struct kgd2kfd_calls {
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void (*exit)(void);
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struct kfd_dev* (*probe)(struct kgd_dev *kgd, struct pci_dev *pdev,
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const struct kfd2kgd_calls *f2g);
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bool (*device_init)(struct kfd_dev *kfd,
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const struct kgd2kfd_shared_resources *gpu_resources);
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void (*device_exit)(struct kfd_dev *kfd);
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void (*interrupt)(struct kfd_dev *kfd, const void *ih_ring_entry);
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void (*suspend)(struct kfd_dev *kfd);
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int (*resume)(struct kfd_dev *kfd);
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};
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int kgd2kfd_init(unsigned interface_version,
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const struct kgd2kfd_calls **g2f);
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#endif /* KGD_KFD_INTERFACE_H_INCLUDED */
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