2014-07-17 06:04:10 +08:00
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/*
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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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#include <linux/slab.h>
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#include <linux/list.h>
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#include "kfd_device_queue_manager.h"
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#include "kfd_priv.h"
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#include "kfd_kernel_queue.h"
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static inline struct process_queue_node *get_queue_by_qid(
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struct process_queue_manager *pqm, unsigned int qid)
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{
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struct process_queue_node *pqn;
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BUG_ON(!pqm);
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list_for_each_entry(pqn, &pqm->queues, process_queue_list) {
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if (pqn->q && pqn->q->properties.queue_id == qid)
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return pqn;
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if (pqn->kq && pqn->kq->queue->properties.queue_id == qid)
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return pqn;
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}
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return NULL;
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}
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static int find_available_queue_slot(struct process_queue_manager *pqm,
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unsigned int *qid)
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{
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unsigned long found;
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BUG_ON(!pqm || !qid);
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pr_debug("kfd: in %s\n", __func__);
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found = find_first_zero_bit(pqm->queue_slot_bitmap,
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2015-01-18 19:18:01 +08:00
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KFD_MAX_NUM_OF_QUEUES_PER_PROCESS);
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2014-07-17 06:04:10 +08:00
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pr_debug("kfd: the new slot id %lu\n", found);
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2015-01-18 19:18:01 +08:00
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if (found >= KFD_MAX_NUM_OF_QUEUES_PER_PROCESS) {
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2014-07-17 06:04:10 +08:00
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pr_info("amdkfd: Can not open more queues for process with pasid %d\n",
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pqm->process->pasid);
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return -ENOMEM;
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}
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set_bit(found, pqm->queue_slot_bitmap);
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*qid = found;
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return 0;
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}
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int pqm_init(struct process_queue_manager *pqm, struct kfd_process *p)
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{
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BUG_ON(!pqm);
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INIT_LIST_HEAD(&pqm->queues);
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pqm->queue_slot_bitmap =
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2015-01-18 19:18:01 +08:00
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kzalloc(DIV_ROUND_UP(KFD_MAX_NUM_OF_QUEUES_PER_PROCESS,
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2014-07-17 06:04:10 +08:00
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BITS_PER_BYTE), GFP_KERNEL);
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if (pqm->queue_slot_bitmap == NULL)
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return -ENOMEM;
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pqm->process = p;
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return 0;
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}
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void pqm_uninit(struct process_queue_manager *pqm)
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{
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int retval;
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struct process_queue_node *pqn, *next;
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BUG_ON(!pqm);
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pr_debug("In func %s\n", __func__);
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list_for_each_entry_safe(pqn, next, &pqm->queues, process_queue_list) {
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retval = pqm_destroy_queue(
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pqm,
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(pqn->q != NULL) ?
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pqn->q->properties.queue_id :
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pqn->kq->queue->properties.queue_id);
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if (retval != 0) {
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pr_err("kfd: failed to destroy queue\n");
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return;
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}
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}
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kfree(pqm->queue_slot_bitmap);
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pqm->queue_slot_bitmap = NULL;
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}
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static int create_cp_queue(struct process_queue_manager *pqm,
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struct kfd_dev *dev, struct queue **q,
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struct queue_properties *q_properties,
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struct file *f, unsigned int qid)
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{
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int retval;
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retval = 0;
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/* Doorbell initialized in user space*/
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q_properties->doorbell_ptr = NULL;
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q_properties->doorbell_off =
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kfd_queue_id_to_doorbell(dev, pqm->process, qid);
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/* let DQM handle it*/
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q_properties->vmid = 0;
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q_properties->queue_id = qid;
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2016-09-17 13:01:45 +08:00
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retval = init_queue(q, q_properties);
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2014-07-17 06:04:10 +08:00
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if (retval != 0)
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goto err_init_queue;
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(*q)->device = dev;
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(*q)->process = pqm->process;
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pr_debug("kfd: PQM After init queue");
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return retval;
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err_init_queue:
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return retval;
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}
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int pqm_create_queue(struct process_queue_manager *pqm,
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struct kfd_dev *dev,
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struct file *f,
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struct queue_properties *properties,
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unsigned int flags,
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enum kfd_queue_type type,
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unsigned int *qid)
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{
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int retval;
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struct kfd_process_device *pdd;
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struct queue_properties q_properties;
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struct queue *q;
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struct process_queue_node *pqn;
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struct kernel_queue *kq;
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2015-05-20 18:43:04 +08:00
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int num_queues = 0;
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struct queue *cur;
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2014-07-17 06:04:10 +08:00
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BUG_ON(!pqm || !dev || !properties || !qid);
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memset(&q_properties, 0, sizeof(struct queue_properties));
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memcpy(&q_properties, properties, sizeof(struct queue_properties));
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q = NULL;
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kq = NULL;
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2014-11-18 20:00:04 +08:00
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pdd = kfd_get_process_device_data(dev, pqm->process);
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if (!pdd) {
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pr_err("Process device data doesn't exist\n");
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return -1;
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}
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2014-07-17 06:04:10 +08:00
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2015-05-20 18:43:04 +08:00
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/*
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* for debug process, verify that it is within the static queues limit
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* currently limit is set to half of the total avail HQD slots
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* If we are just about to create DIQ, the is_debug flag is not set yet
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* Hence we also check the type as well
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*/
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if ((pdd->qpd.is_debug) ||
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(type == KFD_QUEUE_TYPE_DIQ)) {
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list_for_each_entry(cur, &pdd->qpd.queues_list, list)
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num_queues++;
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if (num_queues >= dev->device_info->max_no_of_hqd/2)
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return (-ENOSPC);
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}
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2014-07-17 06:04:10 +08:00
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retval = find_available_queue_slot(pqm, qid);
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if (retval != 0)
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return retval;
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if (list_empty(&pqm->queues)) {
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pdd->qpd.pqm = pqm;
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2015-01-12 20:26:10 +08:00
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dev->dqm->ops.register_process(dev->dqm, &pdd->qpd);
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2014-07-17 06:04:10 +08:00
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}
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pqn = kzalloc(sizeof(struct process_queue_node), GFP_KERNEL);
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if (!pqn) {
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retval = -ENOMEM;
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goto err_allocate_pqn;
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}
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switch (type) {
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2015-01-04 04:12:32 +08:00
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case KFD_QUEUE_TYPE_SDMA:
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2014-07-17 06:04:10 +08:00
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case KFD_QUEUE_TYPE_COMPUTE:
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/* check if there is over subscription */
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if ((sched_policy == KFD_SCHED_POLICY_HWS_NO_OVERSUBSCRIPTION) &&
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((dev->dqm->processes_count >= VMID_PER_DEVICE) ||
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(dev->dqm->queue_count >= PIPE_PER_ME_CP_SCHEDULING * QUEUES_PER_PIPE))) {
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pr_err("kfd: over-subscription is not allowed in radeon_kfd.sched_policy == 1\n");
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retval = -EPERM;
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goto err_create_queue;
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}
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retval = create_cp_queue(pqm, dev, &q, &q_properties, f, *qid);
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if (retval != 0)
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goto err_create_queue;
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pqn->q = q;
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pqn->kq = NULL;
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2015-01-12 20:26:10 +08:00
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retval = dev->dqm->ops.create_queue(dev->dqm, q, &pdd->qpd,
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2014-07-17 06:04:10 +08:00
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&q->properties.vmid);
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2015-01-18 19:18:01 +08:00
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pr_debug("DQM returned %d for create_queue\n", retval);
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2014-07-17 06:04:10 +08:00
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print_queue(q);
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break;
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case KFD_QUEUE_TYPE_DIQ:
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kq = kernel_queue_init(dev, KFD_QUEUE_TYPE_DIQ);
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if (kq == NULL) {
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2014-11-25 18:24:51 +08:00
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retval = -ENOMEM;
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2014-07-17 06:04:10 +08:00
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goto err_create_queue;
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}
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kq->queue->properties.queue_id = *qid;
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pqn->kq = kq;
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pqn->q = NULL;
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2015-01-12 20:26:10 +08:00
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retval = dev->dqm->ops.create_kernel_queue(dev->dqm,
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kq, &pdd->qpd);
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2014-07-17 06:04:10 +08:00
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break;
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default:
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BUG();
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break;
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}
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if (retval != 0) {
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2015-01-18 19:18:01 +08:00
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pr_debug("Error dqm create queue\n");
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2014-07-17 06:04:10 +08:00
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goto err_create_queue;
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}
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pr_debug("kfd: PQM After DQM create queue\n");
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list_add(&pqn->process_queue_list, &pqm->queues);
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if (q) {
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*properties = q->properties;
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pr_debug("kfd: PQM done creating queue\n");
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print_queue_properties(properties);
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}
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return retval;
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err_create_queue:
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kfree(pqn);
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err_allocate_pqn:
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2015-01-15 23:14:47 +08:00
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/* check if queues list is empty unregister process from device */
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2014-07-17 06:04:10 +08:00
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clear_bit(*qid, pqm->queue_slot_bitmap);
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2015-01-15 23:14:47 +08:00
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if (list_empty(&pqm->queues))
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2015-01-29 09:45:31 +08:00
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dev->dqm->ops.unregister_process(dev->dqm, &pdd->qpd);
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2014-07-17 06:04:10 +08:00
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return retval;
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}
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int pqm_destroy_queue(struct process_queue_manager *pqm, unsigned int qid)
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{
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struct process_queue_node *pqn;
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struct kfd_process_device *pdd;
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struct device_queue_manager *dqm;
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struct kfd_dev *dev;
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int retval;
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dqm = NULL;
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BUG_ON(!pqm);
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retval = 0;
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pr_debug("kfd: In Func %s\n", __func__);
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pqn = get_queue_by_qid(pqm, qid);
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if (pqn == NULL) {
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pr_err("kfd: queue id does not match any known queue\n");
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return -EINVAL;
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}
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dev = NULL;
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if (pqn->kq)
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dev = pqn->kq->dev;
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if (pqn->q)
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dev = pqn->q->device;
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BUG_ON(!dev);
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2014-11-18 20:00:04 +08:00
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pdd = kfd_get_process_device_data(dev, pqm->process);
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if (!pdd) {
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pr_err("Process device data doesn't exist\n");
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return -1;
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}
|
2014-07-17 06:04:10 +08:00
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if (pqn->kq) {
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/* destroy kernel queue (DIQ) */
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dqm = pqn->kq->dev->dqm;
|
2015-01-12 20:26:10 +08:00
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dqm->ops.destroy_kernel_queue(dqm, pqn->kq, &pdd->qpd);
|
2014-07-17 06:04:10 +08:00
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kernel_queue_uninit(pqn->kq);
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}
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if (pqn->q) {
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dqm = pqn->q->device->dqm;
|
2015-01-12 20:26:10 +08:00
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retval = dqm->ops.destroy_queue(dqm, &pdd->qpd, pqn->q);
|
2014-07-17 06:04:10 +08:00
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if (retval != 0)
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return retval;
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uninit_queue(pqn->q);
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}
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list_del(&pqn->process_queue_list);
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kfree(pqn);
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clear_bit(qid, pqm->queue_slot_bitmap);
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if (list_empty(&pqm->queues))
|
2015-01-12 20:26:10 +08:00
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dqm->ops.unregister_process(dqm, &pdd->qpd);
|
2014-07-17 06:04:10 +08:00
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return retval;
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}
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int pqm_update_queue(struct process_queue_manager *pqm, unsigned int qid,
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|
|
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struct queue_properties *p)
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{
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int retval;
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struct process_queue_node *pqn;
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BUG_ON(!pqm);
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pqn = get_queue_by_qid(pqm, qid);
|
2015-01-20 20:57:19 +08:00
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if (!pqn) {
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pr_debug("amdkfd: No queue %d exists for update operation\n",
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qid);
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return -EFAULT;
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|
}
|
2014-07-17 06:04:10 +08:00
|
|
|
|
|
|
|
pqn->q->properties.queue_address = p->queue_address;
|
|
|
|
pqn->q->properties.queue_size = p->queue_size;
|
|
|
|
pqn->q->properties.queue_percent = p->queue_percent;
|
|
|
|
pqn->q->properties.priority = p->priority;
|
|
|
|
|
2015-01-12 20:26:10 +08:00
|
|
|
retval = pqn->q->device->dqm->ops.update_queue(pqn->q->device->dqm,
|
|
|
|
pqn->q);
|
2014-07-17 06:04:10 +08:00
|
|
|
if (retval != 0)
|
|
|
|
return retval;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2015-05-20 18:48:26 +08:00
|
|
|
struct kernel_queue *pqm_get_kernel_queue(
|
2014-11-20 17:16:23 +08:00
|
|
|
struct process_queue_manager *pqm,
|
2014-07-17 06:04:10 +08:00
|
|
|
unsigned int qid)
|
|
|
|
{
|
|
|
|
struct process_queue_node *pqn;
|
|
|
|
|
|
|
|
BUG_ON(!pqm);
|
|
|
|
|
|
|
|
pqn = get_queue_by_qid(pqm, qid);
|
|
|
|
if (pqn && pqn->kq)
|
|
|
|
return pqn->kq;
|
|
|
|
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
|