/* * 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.
*/
/** * 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 {
KFD_SCHED_POLICY_HWS = 0,
KFD_SCHED_POLICY_HWS_NO_OVERSUBSCRIPTION,
KFD_SCHED_POLICY_NO_HWS
};
struct kgd2kfd_shared_resources { /* Bit n == 1 means VMID n is available for KFD. */ unsignedint compute_vmid_bitmap;
/* number of pipes per mec */
uint32_t num_pipe_per_mec;
/* number of queues per pipe */
uint32_t num_queue_per_pipe;
/* Bit n == 1 means Queue n is available for KFD */
DECLARE_BITMAP(cp_queue_bitmap, AMDGPU_MAX_QUEUES);
/* SDMA doorbell assignments (SOC15 and later chips only). Only * specific doorbells are routed to each SDMA engine. Others * are routed to IH and VCN. They are not usable by the CP.
*/
uint32_t *sdma_doorbell_idx;
/* From SOC15 onward, the doorbell index range not usable for CP * queues.
*/
uint32_t non_cp_doorbells_start;
uint32_t non_cp_doorbells_end;
/* Base address of doorbell aperture. */
phys_addr_t doorbell_physical_address;
/* Size in bytes of doorbell aperture. */
size_t doorbell_aperture_size;
/* Number of bytes at start of aperture reserved for KGD. */
size_t doorbell_start_offset;
/* GPUVM address space size in bytes */
uint64_t gpuvm_size;
/* Minor device number of the render node */ int drm_render_minor;
/** * 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 { /* Register access functions */ void (*program_sh_mem_settings)(struct amdgpu_device *adev, uint32_t vmid,
uint32_t sh_mem_config, uint32_t sh_mem_ape1_base,
uint32_t sh_mem_ape1_limit, uint32_t sh_mem_bases,
uint32_t inst);
int (*set_pasid_vmid_mapping)(struct amdgpu_device *adev, u32 pasid, unsignedint vmid, uint32_t inst);
int (*init_interrupts)(struct amdgpu_device *adev, uint32_t pipe_id,
uint32_t inst);
/* No longer needed from GFXv9 onward. The scratch base address is * passed to the shader by the CP. It's the user mode driver's * responsibility.
*/ void (*set_scratch_backing_va)(struct amdgpu_device *adev,
uint64_t va, uint32_t vmid);
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