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/*
* 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_DEVICE_QUEUE_MANAGER_H_
#define KFD_DEVICE_QUEUE_MANAGER_H_
#include <linux/rwsem.h>
#include <linux/list.h>
#include <linux/mutex.h>
#include <linux/sched/mm.h>
#include "kfd_priv.h"
#include "kfd_mqd_manager.h"
#define KFD_UNMAP_LATENCY_MS (4000)
#define QUEUE_PREEMPT_DEFAULT_TIMEOUT_MS (2 * KFD_UNMAP_LATENCY_MS + 1000)
#define KFD_SDMA_QUEUES_PER_ENGINE (2)
struct device_process_node {
struct qcm_process_device *qpd;
struct list_head list;
};
/**
* struct device_queue_manager_ops
*
* @create_queue: Queue creation routine.
*
* @destroy_queue: Queue destruction routine.
*
* @update_queue: Queue update routine.
*
* @get_mqd_manager: Returns the mqd manager according to the mqd type.
*
* @exeute_queues: Dispatches the queues list to the H/W.
*
* @register_process: This routine associates a specific process with device.
*
* @unregister_process: destroys the associations between process to device.
*
* @initialize: Initializes the pipelines and memory module for that device.
*
* @start: Initializes the resources/modules the the device needs for queues
* execution. This function is called on device initialization and after the
* system woke up after suspension.
*
* @stop: This routine stops execution of all the active queue running on the
* H/W and basically this function called on system suspend.
*
* @uninitialize: Destroys all the device queue manager resources allocated in
* initialize routine.
*
* @create_kernel_queue: Creates kernel queue. Used for debug queue.
*
* @destroy_kernel_queue: Destroys kernel queue. Used for debug queue.
*
* @set_cache_memory_policy: Sets memory policy (cached/ non cached) for the
* memory apertures.
*
* @process_termination: Clears all process queues belongs to that device.
*
* @evict_process_queues: Evict all active queues of a process
*
* @restore_process_queues: Restore all evicted queues queues of a process
*
*/
struct device_queue_manager_ops {
int (*create_queue)(struct device_queue_manager *dqm,
struct queue *q,
struct qcm_process_device *qpd);
int (*destroy_queue)(struct device_queue_manager *dqm,
struct qcm_process_device *qpd,
struct queue *q);
int (*update_queue)(struct device_queue_manager *dqm,
struct queue *q);
struct mqd_manager * (*get_mqd_manager)
(struct device_queue_manager *dqm,
enum KFD_MQD_TYPE type);
int (*register_process)(struct device_queue_manager *dqm,
struct qcm_process_device *qpd);
int (*unregister_process)(struct device_queue_manager *dqm,
struct qcm_process_device *qpd);
int (*initialize)(struct device_queue_manager *dqm);
int (*start)(struct device_queue_manager *dqm);
int (*stop)(struct device_queue_manager *dqm);
void (*uninitialize)(struct device_queue_manager *dqm);
int (*create_kernel_queue)(struct device_queue_manager *dqm,
struct kernel_queue *kq,
struct qcm_process_device *qpd);
void (*destroy_kernel_queue)(struct device_queue_manager *dqm,
struct kernel_queue *kq,
struct qcm_process_device *qpd);
bool (*set_cache_memory_policy)(struct device_queue_manager *dqm,
struct qcm_process_device *qpd,
enum cache_policy default_policy,
enum cache_policy alternate_policy,
void __user *alternate_aperture_base,
uint64_t alternate_aperture_size);
int (*set_trap_handler)(struct device_queue_manager *dqm,
struct qcm_process_device *qpd,
uint64_t tba_addr,
uint64_t tma_addr);
int (*process_termination)(struct device_queue_manager *dqm,
struct qcm_process_device *qpd);
int (*evict_process_queues)(struct device_queue_manager *dqm,
struct qcm_process_device *qpd);
int (*restore_process_queues)(struct device_queue_manager *dqm,
struct qcm_process_device *qpd);
};
struct device_queue_manager_asic_ops {
int (*update_qpd)(struct device_queue_manager *dqm,
struct qcm_process_device *qpd);
bool (*set_cache_memory_policy)(struct device_queue_manager *dqm,
struct qcm_process_device *qpd,
enum cache_policy default_policy,
enum cache_policy alternate_policy,
void __user *alternate_aperture_base,
uint64_t alternate_aperture_size);
void (*init_sdma_vm)(struct device_queue_manager *dqm,
struct queue *q,
struct qcm_process_device *qpd);
};
/**
* struct device_queue_manager
*
* This struct is a base class for the kfd queues scheduler in the
* device level. The device base class should expose the basic operations
* for queue creation and queue destruction. This base class hides the
* scheduling mode of the driver and the specific implementation of the
* concrete device. This class is the only class in the queues scheduler
* that configures the H/W.
*
*/
struct device_queue_manager {
struct device_queue_manager_ops ops;
struct device_queue_manager_asic_ops asic_ops;
struct mqd_manager *mqd_mgrs[KFD_MQD_TYPE_MAX];
struct packet_manager packets;
struct kfd_dev *dev;
struct mutex lock_hidden; /* use dqm_lock/unlock(dqm) */
struct list_head queues;
unsigned int saved_flags;
unsigned int processes_count;
unsigned int queue_count;
unsigned int sdma_queue_count;
unsigned int total_queue_count;
unsigned int next_pipe_to_allocate;
unsigned int *allocated_queues;
unsigned int sdma_bitmap;
unsigned int vmid_bitmap;
uint64_t pipelines_addr;
struct kfd_mem_obj *pipeline_mem;
uint64_t fence_gpu_addr;
unsigned int *fence_addr;
struct kfd_mem_obj *fence_mem;
bool active_runlist;
int sched_policy;
/* hw exception */
bool is_hws_hang;
struct work_struct hw_exception_work;
};
void device_queue_manager_init_cik(
struct device_queue_manager_asic_ops *asic_ops);
void device_queue_manager_init_cik_hawaii(
struct device_queue_manager_asic_ops *asic_ops);
void device_queue_manager_init_vi(
struct device_queue_manager_asic_ops *asic_ops);
void device_queue_manager_init_vi_tonga(
struct device_queue_manager_asic_ops *asic_ops);
void device_queue_manager_init_v9(
struct device_queue_manager_asic_ops *asic_ops);
void program_sh_mem_settings(struct device_queue_manager *dqm,
struct qcm_process_device *qpd);
unsigned int get_queues_num(struct device_queue_manager *dqm);
unsigned int get_queues_per_pipe(struct device_queue_manager *dqm);
unsigned int get_pipes_per_mec(struct device_queue_manager *dqm);
unsigned int get_num_sdma_queues(struct device_queue_manager *dqm);
static inline unsigned int get_sh_mem_bases_32(struct kfd_process_device *pdd)
{
return (pdd->lds_base >> 16) & 0xFF;
}
static inline unsigned int
get_sh_mem_bases_nybble_64(struct kfd_process_device *pdd)
{
return (pdd->lds_base >> 60) & 0x0E;
}
/* The DQM lock can be taken in MMU notifiers. Make sure no reclaim-FS
* happens while holding this lock anywhere to prevent deadlocks when
* an MMU notifier runs in reclaim-FS context.
*/
static inline void dqm_lock(struct device_queue_manager *dqm)
{
mutex_lock(&dqm->lock_hidden);
dqm->saved_flags = memalloc_nofs_save();
}
static inline void dqm_unlock(struct device_queue_manager *dqm)
{
memalloc_nofs_restore(dqm->saved_flags);
mutex_unlock(&dqm->lock_hidden);
}
#endif /* KFD_DEVICE_QUEUE_MANAGER_H_ */
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