/*
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*
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* (C) COPYRIGHT 2011-2017 ARM Limited. All rights reserved.
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*
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* This program is free software and is provided to you under the terms of the
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* GNU General Public License version 2 as published by the Free Software
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* Foundation, and any use by you of this program is subject to the terms
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* of such GNU licence.
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*
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* A copy of the licence is included with the program, and can also be obtained
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* from Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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/* #define ENABLE_DEBUG_LOG */
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#include "./platform/rk/custom_log.h"
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/*
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* Job Scheduler Implementation
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*/
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#include <mali_kbase.h>
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#include <mali_kbase_js.h>
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#if defined(CONFIG_MALI_GATOR_SUPPORT)
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#include <mali_kbase_gator.h>
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#endif
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#include <mali_kbase_tlstream.h>
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#include <mali_kbase_hw.h>
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#include <mali_kbase_ctx_sched.h>
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#include <mali_kbase_defs.h>
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#include <mali_kbase_config_defaults.h>
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#include "mali_kbase_jm.h"
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#include "mali_kbase_hwaccess_jm.h"
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/*
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* Private types
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*/
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/* Bitpattern indicating the result of releasing a context */
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enum {
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/* The context was descheduled - caller should try scheduling in a new
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* one to keep the runpool full */
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KBASEP_JS_RELEASE_RESULT_WAS_DESCHEDULED = (1u << 0),
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/* Ctx attributes were changed - caller should try scheduling all
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* contexts */
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KBASEP_JS_RELEASE_RESULT_SCHED_ALL = (1u << 1)
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};
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typedef u32 kbasep_js_release_result;
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const int kbasep_js_atom_priority_to_relative[BASE_JD_NR_PRIO_LEVELS] = {
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KBASE_JS_ATOM_SCHED_PRIO_MED, /* BASE_JD_PRIO_MEDIUM */
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KBASE_JS_ATOM_SCHED_PRIO_HIGH, /* BASE_JD_PRIO_HIGH */
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KBASE_JS_ATOM_SCHED_PRIO_LOW /* BASE_JD_PRIO_LOW */
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};
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const base_jd_prio
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kbasep_js_relative_priority_to_atom[KBASE_JS_ATOM_SCHED_PRIO_COUNT] = {
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BASE_JD_PRIO_HIGH, /* KBASE_JS_ATOM_SCHED_PRIO_HIGH */
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BASE_JD_PRIO_MEDIUM, /* KBASE_JS_ATOM_SCHED_PRIO_MED */
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BASE_JD_PRIO_LOW /* KBASE_JS_ATOM_SCHED_PRIO_LOW */
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};
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/*
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* Private function prototypes
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*/
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static kbasep_js_release_result kbasep_js_runpool_release_ctx_internal(
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struct kbase_device *kbdev, struct kbase_context *kctx,
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struct kbasep_js_atom_retained_state *katom_retained_state);
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static int kbase_js_get_slot(struct kbase_device *kbdev,
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struct kbase_jd_atom *katom);
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static void kbase_js_foreach_ctx_job(struct kbase_context *kctx,
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kbasep_js_ctx_job_cb callback);
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/* Helper for trace subcodes */
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#if KBASE_TRACE_ENABLE
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static int kbasep_js_trace_get_refcnt(struct kbase_device *kbdev,
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struct kbase_context *kctx)
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{
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return atomic_read(&kctx->refcount);
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}
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#else /* KBASE_TRACE_ENABLE */
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static int kbasep_js_trace_get_refcnt(struct kbase_device *kbdev,
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struct kbase_context *kctx)
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{
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CSTD_UNUSED(kbdev);
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CSTD_UNUSED(kctx);
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return 0;
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}
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#endif /* KBASE_TRACE_ENABLE */
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/*
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* Private functions
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*/
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/**
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* core_reqs_from_jsn_features - Convert JSn_FEATURES to core requirements
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* @features: JSn_FEATURE register value
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*
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* Given a JSn_FEATURE register value returns the core requirements that match
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*
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* Return: Core requirement bit mask
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*/
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static base_jd_core_req core_reqs_from_jsn_features(u16 features)
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{
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base_jd_core_req core_req = 0u;
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if ((features & JS_FEATURE_SET_VALUE_JOB) != 0)
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core_req |= BASE_JD_REQ_V;
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if ((features & JS_FEATURE_CACHE_FLUSH_JOB) != 0)
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core_req |= BASE_JD_REQ_CF;
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if ((features & JS_FEATURE_COMPUTE_JOB) != 0)
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core_req |= BASE_JD_REQ_CS;
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if ((features & JS_FEATURE_TILER_JOB) != 0)
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core_req |= BASE_JD_REQ_T;
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if ((features & JS_FEATURE_FRAGMENT_JOB) != 0)
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core_req |= BASE_JD_REQ_FS;
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return core_req;
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}
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static void kbase_js_sync_timers(struct kbase_device *kbdev)
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{
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mutex_lock(&kbdev->js_data.runpool_mutex);
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kbase_backend_ctx_count_changed(kbdev);
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mutex_unlock(&kbdev->js_data.runpool_mutex);
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}
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/* Hold the mmu_hw_mutex and hwaccess_lock for this */
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bool kbasep_js_runpool_retain_ctx_nolock(struct kbase_device *kbdev,
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struct kbase_context *kctx)
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{
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struct kbasep_js_device_data *js_devdata;
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bool result = false;
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int as_nr;
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KBASE_DEBUG_ASSERT(kbdev != NULL);
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KBASE_DEBUG_ASSERT(kctx != NULL);
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js_devdata = &kbdev->js_data;
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lockdep_assert_held(&kbdev->hwaccess_lock);
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as_nr = kctx->as_nr;
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if (atomic_read(&kctx->refcount) > 0) {
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KBASE_DEBUG_ASSERT(as_nr >= 0);
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kbase_ctx_sched_retain_ctx_refcount(kctx);
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KBASE_TRACE_ADD_REFCOUNT(kbdev, JS_RETAIN_CTX_NOLOCK, kctx,
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NULL, 0u, atomic_read(&kctx->refcount));
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result = true;
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}
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return result;
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}
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/**
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* jsctx_rb_none_to_pull_prio(): - Check if there are no pullable atoms
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* @kctx: Pointer to kbase context with ring buffer.
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* @js: Job slot id to check.
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* @prio: Priority to check.
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*
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* Return true if there are no atoms to pull. There may be running atoms in the
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* ring buffer even if there are no atoms to pull. It is also possible for the
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* ring buffer to be full (with running atoms) when this functions returns
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* true.
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*
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* Return: true if there are no atoms to pull, false otherwise.
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*/
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static inline bool
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jsctx_rb_none_to_pull_prio(struct kbase_context *kctx, int js, int prio)
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{
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struct jsctx_queue *rb = &kctx->jsctx_queue[prio][js];
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lockdep_assert_held(&kctx->kbdev->hwaccess_lock);
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return RB_EMPTY_ROOT(&rb->runnable_tree);
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}
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/**
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* jsctx_rb_none_to_pull(): - Check if all priority ring buffers have no
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* pullable atoms
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* @kctx: Pointer to kbase context with ring buffer.
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* @js: Job slot id to check.
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*
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* Caller must hold hwaccess_lock
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*
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* Return: true if the ring buffers for all priorities have no pullable atoms,
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* false otherwise.
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*/
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static inline bool
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jsctx_rb_none_to_pull(struct kbase_context *kctx, int js)
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{
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int prio;
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lockdep_assert_held(&kctx->kbdev->hwaccess_lock);
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for (prio = 0; prio < KBASE_JS_ATOM_SCHED_PRIO_COUNT; prio++) {
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if (!jsctx_rb_none_to_pull_prio(kctx, js, prio))
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return false;
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}
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return true;
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}
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/**
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* jsctx_queue_foreach_prio(): - Execute callback for each entry in the queue.
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* @kctx: Pointer to kbase context with the queue.
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* @js: Job slot id to iterate.
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* @prio: Priority id to iterate.
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* @callback: Function pointer to callback.
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*
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* Iterate over a queue and invoke @callback for each entry in the queue, and
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* remove the entry from the queue.
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*
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* If entries are added to the queue while this is running those entries may, or
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* may not be covered. To ensure that all entries in the buffer have been
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* enumerated when this function returns jsctx->lock must be held when calling
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* this function.
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*
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* The HW access lock must always be held when calling this function.
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*/
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static void
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jsctx_queue_foreach_prio(struct kbase_context *kctx, int js, int prio,
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kbasep_js_ctx_job_cb callback)
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{
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struct jsctx_queue *queue = &kctx->jsctx_queue[prio][js];
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lockdep_assert_held(&kctx->kbdev->hwaccess_lock);
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while (!RB_EMPTY_ROOT(&queue->runnable_tree)) {
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struct rb_node *node = rb_first(&queue->runnable_tree);
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struct kbase_jd_atom *entry = rb_entry(node,
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struct kbase_jd_atom, runnable_tree_node);
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rb_erase(node, &queue->runnable_tree);
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callback(kctx->kbdev, entry);
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}
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while (!list_empty(&queue->x_dep_head)) {
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struct kbase_jd_atom *entry = list_entry(queue->x_dep_head.next,
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struct kbase_jd_atom, queue);
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list_del(queue->x_dep_head.next);
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callback(kctx->kbdev, entry);
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}
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}
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/**
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* jsctx_queue_foreach(): - Execute callback for each entry in every queue
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* @kctx: Pointer to kbase context with queue.
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* @js: Job slot id to iterate.
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* @callback: Function pointer to callback.
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*
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* Iterate over all the different priorities, and for each call
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* jsctx_queue_foreach_prio() to iterate over the queue and invoke @callback
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* for each entry, and remove the entry from the queue.
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*/
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static inline void
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jsctx_queue_foreach(struct kbase_context *kctx, int js,
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kbasep_js_ctx_job_cb callback)
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{
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int prio;
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for (prio = 0; prio < KBASE_JS_ATOM_SCHED_PRIO_COUNT; prio++)
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jsctx_queue_foreach_prio(kctx, js, prio, callback);
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}
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/**
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* jsctx_rb_peek_prio(): - Check buffer and get next atom
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* @kctx: Pointer to kbase context with ring buffer.
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* @js: Job slot id to check.
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* @prio: Priority id to check.
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*
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* Check the ring buffer for the specified @js and @prio and return a pointer to
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* the next atom, unless the ring buffer is empty.
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*
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* Return: Pointer to next atom in buffer, or NULL if there is no atom.
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*/
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static inline struct kbase_jd_atom *
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jsctx_rb_peek_prio(struct kbase_context *kctx, int js, int prio)
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{
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struct jsctx_queue *rb = &kctx->jsctx_queue[prio][js];
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struct rb_node *node;
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lockdep_assert_held(&kctx->kbdev->hwaccess_lock);
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node = rb_first(&rb->runnable_tree);
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if (!node)
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return NULL;
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return rb_entry(node, struct kbase_jd_atom, runnable_tree_node);
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}
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/**
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* jsctx_rb_peek(): - Check all priority buffers and get next atom
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* @kctx: Pointer to kbase context with ring buffer.
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* @js: Job slot id to check.
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*
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* Check the ring buffers for all priorities, starting from
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* KBASE_JS_ATOM_SCHED_PRIO_HIGH, for the specified @js and @prio and return a
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* pointer to the next atom, unless all the priority's ring buffers are empty.
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*
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* Caller must hold the hwaccess_lock.
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*
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* Return: Pointer to next atom in buffer, or NULL if there is no atom.
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*/
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static inline struct kbase_jd_atom *
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jsctx_rb_peek(struct kbase_context *kctx, int js)
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{
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int prio;
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lockdep_assert_held(&kctx->kbdev->hwaccess_lock);
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for (prio = 0; prio < KBASE_JS_ATOM_SCHED_PRIO_COUNT; prio++) {
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struct kbase_jd_atom *katom;
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katom = jsctx_rb_peek_prio(kctx, js, prio);
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if (katom)
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return katom;
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}
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return NULL;
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}
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/**
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* jsctx_rb_pull(): - Mark atom in list as running
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* @kctx: Pointer to kbase context with ring buffer.
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* @katom: Pointer to katom to pull.
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*
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* Mark an atom previously obtained from jsctx_rb_peek() as running.
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*
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* @katom must currently be at the head of the ring buffer.
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*/
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static inline void
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jsctx_rb_pull(struct kbase_context *kctx, struct kbase_jd_atom *katom)
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{
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int prio = katom->sched_priority;
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int js = katom->slot_nr;
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struct jsctx_queue *rb = &kctx->jsctx_queue[prio][js];
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lockdep_assert_held(&kctx->kbdev->hwaccess_lock);
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/* Atoms must be pulled in the correct order. */
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WARN_ON(katom != jsctx_rb_peek_prio(kctx, js, prio));
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rb_erase(&katom->runnable_tree_node, &rb->runnable_tree);
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}
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#define LESS_THAN_WRAP(a, b) ((s32)(a - b) < 0)
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static void
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jsctx_tree_add(struct kbase_context *kctx, struct kbase_jd_atom *katom)
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{
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int prio = katom->sched_priority;
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int js = katom->slot_nr;
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struct jsctx_queue *queue = &kctx->jsctx_queue[prio][js];
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struct rb_node **new = &(queue->runnable_tree.rb_node), *parent = NULL;
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lockdep_assert_held(&kctx->kbdev->hwaccess_lock);
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while (*new) {
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struct kbase_jd_atom *entry = container_of(*new,
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struct kbase_jd_atom, runnable_tree_node);
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parent = *new;
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if (LESS_THAN_WRAP(katom->age, entry->age))
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new = &((*new)->rb_left);
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else
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new = &((*new)->rb_right);
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}
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/* Add new node and rebalance tree. */
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rb_link_node(&katom->runnable_tree_node, parent, new);
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rb_insert_color(&katom->runnable_tree_node, &queue->runnable_tree);
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}
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/**
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* jsctx_rb_unpull(): - Undo marking of atom in list as running
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* @kctx: Pointer to kbase context with ring buffer.
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* @katom: Pointer to katom to unpull.
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*
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* Undo jsctx_rb_pull() and put @katom back in the queue.
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*
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* jsctx_rb_unpull() must be called on atoms in the same order the atoms were
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* pulled.
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*/
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static inline void
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jsctx_rb_unpull(struct kbase_context *kctx, struct kbase_jd_atom *katom)
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{
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lockdep_assert_held(&kctx->kbdev->hwaccess_lock);
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jsctx_tree_add(kctx, katom);
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}
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static bool kbase_js_ctx_pullable(struct kbase_context *kctx,
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int js,
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bool is_scheduled);
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static bool kbase_js_ctx_list_add_pullable_nolock(struct kbase_device *kbdev,
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struct kbase_context *kctx,
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int js);
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static bool kbase_js_ctx_list_add_unpullable_nolock(struct kbase_device *kbdev,
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struct kbase_context *kctx,
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int js);
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/*
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* Functions private to KBase ('Protected' functions)
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*/
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int kbasep_js_devdata_init(struct kbase_device * const kbdev)
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{
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struct kbasep_js_device_data *jsdd;
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int i;
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KBASE_DEBUG_ASSERT(kbdev != NULL);
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jsdd = &kbdev->js_data;
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#ifdef CONFIG_MALI_DEBUG
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/* Soft-stop will be disabled on a single context by default unless
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* softstop_always is set */
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jsdd->softstop_always = false;
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#endif /* CONFIG_MALI_DEBUG */
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jsdd->nr_all_contexts_running = 0;
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jsdd->nr_user_contexts_running = 0;
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jsdd->nr_contexts_pullable = 0;
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atomic_set(&jsdd->nr_contexts_runnable, 0);
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/* No ctx allowed to submit */
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jsdd->runpool_irq.submit_allowed = 0u;
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memset(jsdd->runpool_irq.ctx_attr_ref_count, 0,
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sizeof(jsdd->runpool_irq.ctx_attr_ref_count));
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memset(jsdd->runpool_irq.slot_affinities, 0,
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sizeof(jsdd->runpool_irq.slot_affinities));
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memset(jsdd->runpool_irq.slot_affinity_refcount, 0,
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sizeof(jsdd->runpool_irq.slot_affinity_refcount));
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INIT_LIST_HEAD(&jsdd->suspended_soft_jobs_list);
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/* Config attributes */
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jsdd->scheduling_period_ns = DEFAULT_JS_SCHEDULING_PERIOD_NS;
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jsdd->soft_stop_ticks = DEFAULT_JS_SOFT_STOP_TICKS;
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jsdd->soft_stop_ticks_cl = DEFAULT_JS_SOFT_STOP_TICKS_CL;
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if (kbase_hw_has_issue(kbdev, BASE_HW_ISSUE_8408))
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jsdd->hard_stop_ticks_ss = DEFAULT_JS_HARD_STOP_TICKS_SS_8408;
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else
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jsdd->hard_stop_ticks_ss = DEFAULT_JS_HARD_STOP_TICKS_SS;
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jsdd->hard_stop_ticks_cl = DEFAULT_JS_HARD_STOP_TICKS_CL;
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jsdd->hard_stop_ticks_dumping = DEFAULT_JS_HARD_STOP_TICKS_DUMPING;
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if (kbase_hw_has_issue(kbdev, BASE_HW_ISSUE_8408))
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jsdd->gpu_reset_ticks_ss = DEFAULT_JS_RESET_TICKS_SS_8408;
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else
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jsdd->gpu_reset_ticks_ss = DEFAULT_JS_RESET_TICKS_SS;
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jsdd->gpu_reset_ticks_cl = DEFAULT_JS_RESET_TICKS_CL;
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jsdd->gpu_reset_ticks_dumping = DEFAULT_JS_RESET_TICKS_DUMPING;
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jsdd->ctx_timeslice_ns = DEFAULT_JS_CTX_TIMESLICE_NS;
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atomic_set(&jsdd->soft_job_timeout_ms, DEFAULT_JS_SOFT_JOB_TIMEOUT);
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dev_dbg(kbdev->dev, "JS Config Attribs: ");
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dev_dbg(kbdev->dev, "\tscheduling_period_ns:%u",
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jsdd->scheduling_period_ns);
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dev_dbg(kbdev->dev, "\tsoft_stop_ticks:%u",
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jsdd->soft_stop_ticks);
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dev_dbg(kbdev->dev, "\tsoft_stop_ticks_cl:%u",
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jsdd->soft_stop_ticks_cl);
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dev_dbg(kbdev->dev, "\thard_stop_ticks_ss:%u",
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jsdd->hard_stop_ticks_ss);
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dev_dbg(kbdev->dev, "\thard_stop_ticks_cl:%u",
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jsdd->hard_stop_ticks_cl);
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dev_dbg(kbdev->dev, "\thard_stop_ticks_dumping:%u",
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jsdd->hard_stop_ticks_dumping);
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dev_dbg(kbdev->dev, "\tgpu_reset_ticks_ss:%u",
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jsdd->gpu_reset_ticks_ss);
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dev_dbg(kbdev->dev, "\tgpu_reset_ticks_cl:%u",
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jsdd->gpu_reset_ticks_cl);
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dev_dbg(kbdev->dev, "\tgpu_reset_ticks_dumping:%u",
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jsdd->gpu_reset_ticks_dumping);
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dev_dbg(kbdev->dev, "\tctx_timeslice_ns:%u",
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jsdd->ctx_timeslice_ns);
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dev_dbg(kbdev->dev, "\tsoft_job_timeout:%i",
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atomic_read(&jsdd->soft_job_timeout_ms));
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if (!(jsdd->soft_stop_ticks < jsdd->hard_stop_ticks_ss &&
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jsdd->hard_stop_ticks_ss < jsdd->gpu_reset_ticks_ss &&
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jsdd->soft_stop_ticks < jsdd->hard_stop_ticks_dumping &&
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jsdd->hard_stop_ticks_dumping <
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jsdd->gpu_reset_ticks_dumping)) {
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dev_err(kbdev->dev, "Job scheduler timeouts invalid; soft/hard/reset tick counts should be in increasing order\n");
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return -EINVAL;
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}
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#if KBASE_DISABLE_SCHEDULING_SOFT_STOPS
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dev_dbg(kbdev->dev, "Job Scheduling Soft-stops disabled, ignoring value for soft_stop_ticks==%u at %uns per tick. Other soft-stops may still occur.",
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jsdd->soft_stop_ticks,
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jsdd->scheduling_period_ns);
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#endif
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#if KBASE_DISABLE_SCHEDULING_HARD_STOPS
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dev_dbg(kbdev->dev, "Job Scheduling Hard-stops disabled, ignoring values for hard_stop_ticks_ss==%d and hard_stop_ticks_dumping==%u at %uns per tick. Other hard-stops may still occur.",
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jsdd->hard_stop_ticks_ss,
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jsdd->hard_stop_ticks_dumping,
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jsdd->scheduling_period_ns);
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#endif
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#if KBASE_DISABLE_SCHEDULING_SOFT_STOPS && KBASE_DISABLE_SCHEDULING_HARD_STOPS
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dev_dbg(kbdev->dev, "Note: The JS tick timer (if coded) will still be run, but do nothing.");
|
#endif
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for (i = 0; i < kbdev->gpu_props.num_job_slots; ++i)
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jsdd->js_reqs[i] = core_reqs_from_jsn_features(
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kbdev->gpu_props.props.raw_props.js_features[i]);
|
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/* On error, we could continue on: providing none of the below resources
|
* rely on the ones above */
|
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mutex_init(&jsdd->runpool_mutex);
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mutex_init(&jsdd->queue_mutex);
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spin_lock_init(&kbdev->hwaccess_lock);
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sema_init(&jsdd->schedule_sem, 1);
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for (i = 0; i < kbdev->gpu_props.num_job_slots; ++i) {
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INIT_LIST_HEAD(&jsdd->ctx_list_pullable[i]);
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INIT_LIST_HEAD(&jsdd->ctx_list_unpullable[i]);
|
}
|
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return 0;
|
}
|
|
void kbasep_js_devdata_halt(struct kbase_device *kbdev)
|
{
|
CSTD_UNUSED(kbdev);
|
}
|
|
void kbasep_js_devdata_term(struct kbase_device *kbdev)
|
{
|
struct kbasep_js_device_data *js_devdata;
|
s8 zero_ctx_attr_ref_count[KBASEP_JS_CTX_ATTR_COUNT] = { 0, };
|
|
KBASE_DEBUG_ASSERT(kbdev != NULL);
|
|
js_devdata = &kbdev->js_data;
|
|
/* The caller must de-register all contexts before calling this
|
*/
|
KBASE_DEBUG_ASSERT(js_devdata->nr_all_contexts_running == 0);
|
KBASE_DEBUG_ASSERT(memcmp(
|
js_devdata->runpool_irq.ctx_attr_ref_count,
|
zero_ctx_attr_ref_count,
|
sizeof(zero_ctx_attr_ref_count)) == 0);
|
CSTD_UNUSED(zero_ctx_attr_ref_count);
|
}
|
|
int kbasep_js_kctx_init(struct kbase_context * const kctx)
|
{
|
struct kbase_device *kbdev;
|
struct kbasep_js_kctx_info *js_kctx_info;
|
int i, j;
|
|
KBASE_DEBUG_ASSERT(kctx != NULL);
|
|
kbdev = kctx->kbdev;
|
KBASE_DEBUG_ASSERT(kbdev != NULL);
|
|
for (i = 0; i < BASE_JM_MAX_NR_SLOTS; ++i)
|
INIT_LIST_HEAD(&kctx->jctx.sched_info.ctx.ctx_list_entry[i]);
|
|
js_kctx_info = &kctx->jctx.sched_info;
|
|
js_kctx_info->ctx.nr_jobs = 0;
|
kbase_ctx_flag_clear(kctx, KCTX_SCHEDULED);
|
kbase_ctx_flag_clear(kctx, KCTX_DYING);
|
memset(js_kctx_info->ctx.ctx_attr_ref_count, 0,
|
sizeof(js_kctx_info->ctx.ctx_attr_ref_count));
|
|
/* Initially, the context is disabled from submission until the create
|
* flags are set */
|
kbase_ctx_flag_set(kctx, KCTX_SUBMIT_DISABLED);
|
|
/* On error, we could continue on: providing none of the below resources
|
* rely on the ones above */
|
mutex_init(&js_kctx_info->ctx.jsctx_mutex);
|
|
init_waitqueue_head(&js_kctx_info->ctx.is_scheduled_wait);
|
|
for (i = 0; i < KBASE_JS_ATOM_SCHED_PRIO_COUNT; i++) {
|
for (j = 0; j < BASE_JM_MAX_NR_SLOTS; j++) {
|
INIT_LIST_HEAD(&kctx->jsctx_queue[i][j].x_dep_head);
|
kctx->jsctx_queue[i][j].runnable_tree = RB_ROOT;
|
}
|
}
|
|
return 0;
|
}
|
|
void kbasep_js_kctx_term(struct kbase_context *kctx)
|
{
|
struct kbase_device *kbdev;
|
struct kbasep_js_kctx_info *js_kctx_info;
|
int js;
|
bool update_ctx_count = false;
|
|
KBASE_DEBUG_ASSERT(kctx != NULL);
|
|
kbdev = kctx->kbdev;
|
KBASE_DEBUG_ASSERT(kbdev != NULL);
|
|
js_kctx_info = &kctx->jctx.sched_info;
|
|
/* The caller must de-register all jobs before calling this */
|
KBASE_DEBUG_ASSERT(!kbase_ctx_flag(kctx, KCTX_SCHEDULED));
|
KBASE_DEBUG_ASSERT(js_kctx_info->ctx.nr_jobs == 0);
|
|
mutex_lock(&kbdev->js_data.queue_mutex);
|
mutex_lock(&kctx->jctx.sched_info.ctx.jsctx_mutex);
|
|
for (js = 0; js < kbdev->gpu_props.num_job_slots; js++)
|
list_del_init(&kctx->jctx.sched_info.ctx.ctx_list_entry[js]);
|
|
if (kbase_ctx_flag(kctx, KCTX_RUNNABLE_REF)) {
|
WARN_ON(atomic_read(&kbdev->js_data.nr_contexts_runnable) <= 0);
|
atomic_dec(&kbdev->js_data.nr_contexts_runnable);
|
update_ctx_count = true;
|
kbase_ctx_flag_clear(kctx, KCTX_RUNNABLE_REF);
|
}
|
|
mutex_unlock(&kctx->jctx.sched_info.ctx.jsctx_mutex);
|
mutex_unlock(&kbdev->js_data.queue_mutex);
|
|
if (update_ctx_count) {
|
mutex_lock(&kbdev->js_data.runpool_mutex);
|
kbase_backend_ctx_count_changed(kbdev);
|
mutex_unlock(&kbdev->js_data.runpool_mutex);
|
}
|
}
|
|
/**
|
* kbase_js_ctx_list_add_pullable_nolock - Variant of
|
* kbase_jd_ctx_list_add_pullable()
|
* where the caller must hold
|
* hwaccess_lock
|
* @kbdev: Device pointer
|
* @kctx: Context to add to queue
|
* @js: Job slot to use
|
*
|
* Caller must hold hwaccess_lock
|
*
|
* Return: true if caller should call kbase_backend_ctx_count_changed()
|
*/
|
static bool kbase_js_ctx_list_add_pullable_nolock(struct kbase_device *kbdev,
|
struct kbase_context *kctx,
|
int js)
|
{
|
bool ret = false;
|
|
lockdep_assert_held(&kbdev->hwaccess_lock);
|
|
if (!list_empty(&kctx->jctx.sched_info.ctx.ctx_list_entry[js]))
|
list_del_init(&kctx->jctx.sched_info.ctx.ctx_list_entry[js]);
|
|
list_add_tail(&kctx->jctx.sched_info.ctx.ctx_list_entry[js],
|
&kbdev->js_data.ctx_list_pullable[js]);
|
|
if (!kctx->slots_pullable) {
|
kbdev->js_data.nr_contexts_pullable++;
|
ret = true;
|
if (!atomic_read(&kctx->atoms_pulled)) {
|
WARN_ON(kbase_ctx_flag(kctx, KCTX_RUNNABLE_REF));
|
kbase_ctx_flag_set(kctx, KCTX_RUNNABLE_REF);
|
atomic_inc(&kbdev->js_data.nr_contexts_runnable);
|
}
|
}
|
kctx->slots_pullable |= (1 << js);
|
|
return ret;
|
}
|
|
/**
|
* kbase_js_ctx_list_add_pullable_head_nolock - Variant of
|
* kbase_js_ctx_list_add_pullable_head()
|
* where the caller must hold
|
* hwaccess_lock
|
* @kbdev: Device pointer
|
* @kctx: Context to add to queue
|
* @js: Job slot to use
|
*
|
* Caller must hold hwaccess_lock
|
*
|
* Return: true if caller should call kbase_backend_ctx_count_changed()
|
*/
|
static bool kbase_js_ctx_list_add_pullable_head_nolock(
|
struct kbase_device *kbdev, struct kbase_context *kctx, int js)
|
{
|
bool ret = false;
|
|
lockdep_assert_held(&kbdev->hwaccess_lock);
|
|
if (!list_empty(&kctx->jctx.sched_info.ctx.ctx_list_entry[js]))
|
list_del_init(&kctx->jctx.sched_info.ctx.ctx_list_entry[js]);
|
|
list_add(&kctx->jctx.sched_info.ctx.ctx_list_entry[js],
|
&kbdev->js_data.ctx_list_pullable[js]);
|
|
if (!kctx->slots_pullable) {
|
kbdev->js_data.nr_contexts_pullable++;
|
ret = true;
|
if (!atomic_read(&kctx->atoms_pulled)) {
|
WARN_ON(kbase_ctx_flag(kctx, KCTX_RUNNABLE_REF));
|
kbase_ctx_flag_set(kctx, KCTX_RUNNABLE_REF);
|
atomic_inc(&kbdev->js_data.nr_contexts_runnable);
|
}
|
}
|
kctx->slots_pullable |= (1 << js);
|
|
return ret;
|
}
|
|
/**
|
* kbase_js_ctx_list_add_pullable_head - Add context to the head of the
|
* per-slot pullable context queue
|
* @kbdev: Device pointer
|
* @kctx: Context to add to queue
|
* @js: Job slot to use
|
*
|
* If the context is on either the pullable or unpullable queues, then it is
|
* removed before being added to the head.
|
*
|
* This function should be used when a context has been scheduled, but no jobs
|
* can currently be pulled from it.
|
*
|
* Return: true if caller should call kbase_backend_ctx_count_changed()
|
*/
|
static bool kbase_js_ctx_list_add_pullable_head(struct kbase_device *kbdev,
|
struct kbase_context *kctx,
|
int js)
|
{
|
bool ret;
|
unsigned long flags;
|
|
spin_lock_irqsave(&kbdev->hwaccess_lock, flags);
|
ret = kbase_js_ctx_list_add_pullable_head_nolock(kbdev, kctx, js);
|
spin_unlock_irqrestore(&kbdev->hwaccess_lock, flags);
|
|
return ret;
|
}
|
|
/**
|
* kbase_js_ctx_list_add_unpullable_nolock - Add context to the tail of the
|
* per-slot unpullable context queue
|
* @kbdev: Device pointer
|
* @kctx: Context to add to queue
|
* @js: Job slot to use
|
*
|
* The context must already be on the per-slot pullable queue. It will be
|
* removed from the pullable queue before being added to the unpullable queue.
|
*
|
* This function should be used when a context has been pulled from, and there
|
* are no jobs remaining on the specified slot.
|
*
|
* Caller must hold hwaccess_lock
|
*
|
* Return: true if caller should call kbase_backend_ctx_count_changed()
|
*/
|
static bool kbase_js_ctx_list_add_unpullable_nolock(struct kbase_device *kbdev,
|
struct kbase_context *kctx,
|
int js)
|
{
|
bool ret = false;
|
|
lockdep_assert_held(&kbdev->hwaccess_lock);
|
|
list_move_tail(&kctx->jctx.sched_info.ctx.ctx_list_entry[js],
|
&kbdev->js_data.ctx_list_unpullable[js]);
|
|
if (kctx->slots_pullable == (1 << js)) {
|
kbdev->js_data.nr_contexts_pullable--;
|
ret = true;
|
if (!atomic_read(&kctx->atoms_pulled)) {
|
WARN_ON(!kbase_ctx_flag(kctx, KCTX_RUNNABLE_REF));
|
kbase_ctx_flag_clear(kctx, KCTX_RUNNABLE_REF);
|
atomic_dec(&kbdev->js_data.nr_contexts_runnable);
|
}
|
}
|
kctx->slots_pullable &= ~(1 << js);
|
|
return ret;
|
}
|
|
/**
|
* kbase_js_ctx_list_remove_nolock - Remove context from the per-slot pullable
|
* or unpullable context queues
|
* @kbdev: Device pointer
|
* @kctx: Context to remove from queue
|
* @js: Job slot to use
|
*
|
* The context must already be on one of the queues.
|
*
|
* This function should be used when a context has no jobs on the GPU, and no
|
* jobs remaining for the specified slot.
|
*
|
* Caller must hold hwaccess_lock
|
*
|
* Return: true if caller should call kbase_backend_ctx_count_changed()
|
*/
|
static bool kbase_js_ctx_list_remove_nolock(struct kbase_device *kbdev,
|
struct kbase_context *kctx,
|
int js)
|
{
|
bool ret = false;
|
|
lockdep_assert_held(&kbdev->hwaccess_lock);
|
|
WARN_ON(list_empty(&kctx->jctx.sched_info.ctx.ctx_list_entry[js]));
|
|
list_del_init(&kctx->jctx.sched_info.ctx.ctx_list_entry[js]);
|
|
if (kctx->slots_pullable == (1 << js)) {
|
kbdev->js_data.nr_contexts_pullable--;
|
ret = true;
|
if (!atomic_read(&kctx->atoms_pulled)) {
|
WARN_ON(!kbase_ctx_flag(kctx, KCTX_RUNNABLE_REF));
|
kbase_ctx_flag_clear(kctx, KCTX_RUNNABLE_REF);
|
atomic_dec(&kbdev->js_data.nr_contexts_runnable);
|
}
|
}
|
kctx->slots_pullable &= ~(1 << js);
|
|
return ret;
|
}
|
|
/**
|
* kbase_js_ctx_list_pop_head_nolock - Variant of kbase_js_ctx_list_pop_head()
|
* where the caller must hold
|
* hwaccess_lock
|
* @kbdev: Device pointer
|
* @js: Job slot to use
|
*
|
* Caller must hold hwaccess_lock
|
*
|
* Return: Context to use for specified slot.
|
* NULL if no contexts present for specified slot
|
*/
|
static struct kbase_context *kbase_js_ctx_list_pop_head_nolock(
|
struct kbase_device *kbdev,
|
int js)
|
{
|
struct kbase_context *kctx;
|
|
lockdep_assert_held(&kbdev->hwaccess_lock);
|
|
if (list_empty(&kbdev->js_data.ctx_list_pullable[js]))
|
return NULL;
|
|
kctx = list_entry(kbdev->js_data.ctx_list_pullable[js].next,
|
struct kbase_context,
|
jctx.sched_info.ctx.ctx_list_entry[js]);
|
|
list_del_init(&kctx->jctx.sched_info.ctx.ctx_list_entry[js]);
|
|
return kctx;
|
}
|
|
/**
|
* kbase_js_ctx_list_pop_head - Pop the head context off the per-slot pullable
|
* queue.
|
* @kbdev: Device pointer
|
* @js: Job slot to use
|
*
|
* Return: Context to use for specified slot.
|
* NULL if no contexts present for specified slot
|
*/
|
static struct kbase_context *kbase_js_ctx_list_pop_head(
|
struct kbase_device *kbdev, int js)
|
{
|
struct kbase_context *kctx;
|
unsigned long flags;
|
|
spin_lock_irqsave(&kbdev->hwaccess_lock, flags);
|
kctx = kbase_js_ctx_list_pop_head_nolock(kbdev, js);
|
spin_unlock_irqrestore(&kbdev->hwaccess_lock, flags);
|
|
return kctx;
|
}
|
|
/**
|
* kbase_js_ctx_pullable - Return if a context can be pulled from on the
|
* specified slot
|
* @kctx: Context pointer
|
* @js: Job slot to use
|
* @is_scheduled: true if the context is currently scheduled
|
*
|
* Caller must hold hwaccess_lock
|
*
|
* Return: true if context can be pulled from on specified slot
|
* false otherwise
|
*/
|
static bool kbase_js_ctx_pullable(struct kbase_context *kctx, int js,
|
bool is_scheduled)
|
{
|
struct kbasep_js_device_data *js_devdata;
|
struct kbase_jd_atom *katom;
|
|
lockdep_assert_held(&kctx->kbdev->hwaccess_lock);
|
|
js_devdata = &kctx->kbdev->js_data;
|
|
if (is_scheduled) {
|
if (!kbasep_js_is_submit_allowed(js_devdata, kctx))
|
return false;
|
}
|
katom = jsctx_rb_peek(kctx, js);
|
if (!katom)
|
return false; /* No pullable atoms */
|
if (kctx->blocked_js[js][katom->sched_priority])
|
return false;
|
if (atomic_read(&katom->blocked))
|
return false; /* next atom blocked */
|
if (katom->atom_flags & KBASE_KATOM_FLAG_X_DEP_BLOCKED) {
|
if (katom->x_pre_dep->gpu_rb_state ==
|
KBASE_ATOM_GPU_RB_NOT_IN_SLOT_RB ||
|
katom->x_pre_dep->will_fail_event_code)
|
return false;
|
if ((katom->atom_flags & KBASE_KATOM_FLAG_FAIL_BLOCKER) &&
|
kbase_backend_nr_atoms_on_slot(kctx->kbdev, js))
|
return false;
|
}
|
|
return true;
|
}
|
|
static bool kbase_js_dep_validate(struct kbase_context *kctx,
|
struct kbase_jd_atom *katom)
|
{
|
struct kbase_device *kbdev = kctx->kbdev;
|
bool ret = true;
|
bool has_dep = false, has_x_dep = false;
|
int js = kbase_js_get_slot(kbdev, katom);
|
int prio = katom->sched_priority;
|
int i;
|
|
for (i = 0; i < 2; i++) {
|
struct kbase_jd_atom *dep_atom = katom->dep[i].atom;
|
|
if (dep_atom) {
|
int dep_js = kbase_js_get_slot(kbdev, dep_atom);
|
int dep_prio = dep_atom->sched_priority;
|
|
/* Dependent atom must already have been submitted */
|
if (!(dep_atom->atom_flags &
|
KBASE_KATOM_FLAG_JSCTX_IN_TREE)) {
|
ret = false;
|
break;
|
}
|
|
/* Dependencies with different priorities can't
|
be represented in the ringbuffer */
|
if (prio != dep_prio) {
|
ret = false;
|
break;
|
}
|
|
if (js == dep_js) {
|
/* Only one same-slot dependency can be
|
* represented in the ringbuffer */
|
if (has_dep) {
|
ret = false;
|
break;
|
}
|
/* Each dependee atom can only have one
|
* same-slot dependency */
|
if (dep_atom->post_dep) {
|
ret = false;
|
break;
|
}
|
has_dep = true;
|
} else {
|
/* Only one cross-slot dependency can be
|
* represented in the ringbuffer */
|
if (has_x_dep) {
|
ret = false;
|
break;
|
}
|
/* Each dependee atom can only have one
|
* cross-slot dependency */
|
if (dep_atom->x_post_dep) {
|
ret = false;
|
break;
|
}
|
/* The dependee atom can not already be in the
|
* HW access ringbuffer */
|
if (dep_atom->gpu_rb_state !=
|
KBASE_ATOM_GPU_RB_NOT_IN_SLOT_RB) {
|
ret = false;
|
break;
|
}
|
/* The dependee atom can not already have
|
* completed */
|
if (dep_atom->status !=
|
KBASE_JD_ATOM_STATE_IN_JS) {
|
ret = false;
|
break;
|
}
|
/* Cross-slot dependencies must not violate
|
* PRLAM-8987 affinity restrictions */
|
if (kbase_hw_has_issue(kbdev,
|
BASE_HW_ISSUE_8987) &&
|
(js == 2 || dep_js == 2)) {
|
ret = false;
|
break;
|
}
|
has_x_dep = true;
|
}
|
|
/* Dependency can be represented in ringbuffers */
|
}
|
}
|
|
/* If dependencies can be represented by ringbuffer then clear them from
|
* atom structure */
|
if (ret) {
|
for (i = 0; i < 2; i++) {
|
struct kbase_jd_atom *dep_atom = katom->dep[i].atom;
|
|
if (dep_atom) {
|
int dep_js = kbase_js_get_slot(kbdev, dep_atom);
|
|
if ((js != dep_js) &&
|
(dep_atom->status !=
|
KBASE_JD_ATOM_STATE_COMPLETED)
|
&& (dep_atom->status !=
|
KBASE_JD_ATOM_STATE_HW_COMPLETED)
|
&& (dep_atom->status !=
|
KBASE_JD_ATOM_STATE_UNUSED)) {
|
|
katom->atom_flags |=
|
KBASE_KATOM_FLAG_X_DEP_BLOCKED;
|
katom->x_pre_dep = dep_atom;
|
dep_atom->x_post_dep = katom;
|
if (kbase_jd_katom_dep_type(
|
&katom->dep[i]) ==
|
BASE_JD_DEP_TYPE_DATA)
|
katom->atom_flags |=
|
KBASE_KATOM_FLAG_FAIL_BLOCKER;
|
}
|
if ((kbase_jd_katom_dep_type(&katom->dep[i])
|
== BASE_JD_DEP_TYPE_DATA) &&
|
(js == dep_js)) {
|
katom->pre_dep = dep_atom;
|
dep_atom->post_dep = katom;
|
}
|
|
list_del(&katom->dep_item[i]);
|
kbase_jd_katom_dep_clear(&katom->dep[i]);
|
}
|
}
|
}
|
|
return ret;
|
}
|
|
bool kbasep_js_add_job(struct kbase_context *kctx,
|
struct kbase_jd_atom *atom)
|
{
|
unsigned long flags;
|
struct kbasep_js_kctx_info *js_kctx_info;
|
struct kbase_device *kbdev;
|
struct kbasep_js_device_data *js_devdata;
|
|
bool enqueue_required = false;
|
bool timer_sync = false;
|
|
KBASE_DEBUG_ASSERT(kctx != NULL);
|
KBASE_DEBUG_ASSERT(atom != NULL);
|
lockdep_assert_held(&kctx->jctx.lock);
|
|
kbdev = kctx->kbdev;
|
js_devdata = &kbdev->js_data;
|
js_kctx_info = &kctx->jctx.sched_info;
|
|
mutex_lock(&js_devdata->queue_mutex);
|
mutex_lock(&js_kctx_info->ctx.jsctx_mutex);
|
|
/*
|
* Begin Runpool transaction
|
*/
|
mutex_lock(&js_devdata->runpool_mutex);
|
|
/* Refcount ctx.nr_jobs */
|
KBASE_DEBUG_ASSERT(js_kctx_info->ctx.nr_jobs < U32_MAX);
|
++(js_kctx_info->ctx.nr_jobs);
|
|
/* Setup any scheduling information */
|
kbasep_js_clear_job_retry_submit(atom);
|
|
/* Lock for state available during IRQ */
|
spin_lock_irqsave(&kbdev->hwaccess_lock, flags);
|
|
if (!kbase_js_dep_validate(kctx, atom)) {
|
/* Dependencies could not be represented */
|
--(js_kctx_info->ctx.nr_jobs);
|
|
/* Setting atom status back to queued as it still has unresolved
|
* dependencies */
|
atom->status = KBASE_JD_ATOM_STATE_QUEUED;
|
|
spin_unlock_irqrestore(&kbdev->hwaccess_lock, flags);
|
mutex_unlock(&js_devdata->runpool_mutex);
|
|
goto out_unlock;
|
}
|
|
KBASE_TLSTREAM_TL_ATTRIB_ATOM_STATE(atom, TL_ATOM_STATE_READY);
|
KBASE_TIMELINE_ATOM_READY(kctx, kbase_jd_atom_id(kctx, atom));
|
|
enqueue_required = kbase_js_dep_resolved_submit(kctx, atom);
|
|
KBASE_TRACE_ADD_REFCOUNT(kbdev, JS_ADD_JOB, kctx, atom, atom->jc,
|
kbasep_js_trace_get_refcnt(kbdev, kctx));
|
|
/* Context Attribute Refcounting */
|
kbasep_js_ctx_attr_ctx_retain_atom(kbdev, kctx, atom);
|
|
if (enqueue_required) {
|
if (kbase_js_ctx_pullable(kctx, atom->slot_nr, false))
|
timer_sync = kbase_js_ctx_list_add_pullable_nolock(
|
kbdev, kctx, atom->slot_nr);
|
else
|
timer_sync = kbase_js_ctx_list_add_unpullable_nolock(
|
kbdev, kctx, atom->slot_nr);
|
}
|
/* If this context is active and the atom is the first on its slot,
|
* kick the job manager to attempt to fast-start the atom */
|
if (enqueue_required && kctx == kbdev->hwaccess.active_kctx)
|
kbase_jm_try_kick(kbdev, 1 << atom->slot_nr);
|
|
spin_unlock_irqrestore(&kbdev->hwaccess_lock, flags);
|
if (timer_sync)
|
kbase_backend_ctx_count_changed(kbdev);
|
mutex_unlock(&js_devdata->runpool_mutex);
|
/* End runpool transaction */
|
|
if (!kbase_ctx_flag(kctx, KCTX_SCHEDULED)) {
|
if (kbase_ctx_flag(kctx, KCTX_DYING)) {
|
/* A job got added while/after kbase_job_zap_context()
|
* was called on a non-scheduled context (e.g. KDS
|
* dependency resolved). Kill that job by killing the
|
* context. */
|
kbasep_js_runpool_requeue_or_kill_ctx(kbdev, kctx,
|
false);
|
} else if (js_kctx_info->ctx.nr_jobs == 1) {
|
/* Handle Refcount going from 0 to 1: schedule the
|
* context on the Queue */
|
KBASE_DEBUG_ASSERT(!kbase_ctx_flag(kctx, KCTX_SCHEDULED));
|
dev_dbg(kbdev->dev, "JS: Enqueue Context %p", kctx);
|
|
/* Queue was updated - caller must try to
|
* schedule the head context */
|
WARN_ON(!enqueue_required);
|
}
|
}
|
out_unlock:
|
mutex_unlock(&js_kctx_info->ctx.jsctx_mutex);
|
|
mutex_unlock(&js_devdata->queue_mutex);
|
|
return enqueue_required;
|
}
|
|
void kbasep_js_remove_job(struct kbase_device *kbdev,
|
struct kbase_context *kctx, struct kbase_jd_atom *atom)
|
{
|
struct kbasep_js_kctx_info *js_kctx_info;
|
struct kbasep_js_device_data *js_devdata;
|
|
KBASE_DEBUG_ASSERT(kbdev != NULL);
|
KBASE_DEBUG_ASSERT(kctx != NULL);
|
KBASE_DEBUG_ASSERT(atom != NULL);
|
|
js_devdata = &kbdev->js_data;
|
js_kctx_info = &kctx->jctx.sched_info;
|
|
KBASE_TRACE_ADD_REFCOUNT(kbdev, JS_REMOVE_JOB, kctx, atom, atom->jc,
|
kbasep_js_trace_get_refcnt(kbdev, kctx));
|
|
/* De-refcount ctx.nr_jobs */
|
KBASE_DEBUG_ASSERT(js_kctx_info->ctx.nr_jobs > 0);
|
--(js_kctx_info->ctx.nr_jobs);
|
}
|
|
bool kbasep_js_remove_cancelled_job(struct kbase_device *kbdev,
|
struct kbase_context *kctx, struct kbase_jd_atom *katom)
|
{
|
unsigned long flags;
|
struct kbasep_js_atom_retained_state katom_retained_state;
|
struct kbasep_js_device_data *js_devdata;
|
bool attr_state_changed;
|
|
KBASE_DEBUG_ASSERT(kbdev != NULL);
|
KBASE_DEBUG_ASSERT(kctx != NULL);
|
KBASE_DEBUG_ASSERT(katom != NULL);
|
|
js_devdata = &kbdev->js_data;
|
|
kbasep_js_atom_retained_state_copy(&katom_retained_state, katom);
|
kbasep_js_remove_job(kbdev, kctx, katom);
|
|
spin_lock_irqsave(&kbdev->hwaccess_lock, flags);
|
|
/* The atom has 'finished' (will not be re-run), so no need to call
|
* kbasep_js_has_atom_finished().
|
*
|
* This is because it returns false for soft-stopped atoms, but we
|
* want to override that, because we're cancelling an atom regardless of
|
* whether it was soft-stopped or not */
|
attr_state_changed = kbasep_js_ctx_attr_ctx_release_atom(kbdev, kctx,
|
&katom_retained_state);
|
spin_unlock_irqrestore(&kbdev->hwaccess_lock, flags);
|
|
return attr_state_changed;
|
}
|
|
bool kbasep_js_runpool_retain_ctx(struct kbase_device *kbdev,
|
struct kbase_context *kctx)
|
{
|
unsigned long flags;
|
struct kbasep_js_device_data *js_devdata;
|
bool result;
|
|
KBASE_DEBUG_ASSERT(kbdev != NULL);
|
js_devdata = &kbdev->js_data;
|
|
mutex_lock(&kbdev->mmu_hw_mutex);
|
spin_lock_irqsave(&kbdev->hwaccess_lock, flags);
|
result = kbasep_js_runpool_retain_ctx_nolock(kbdev, kctx);
|
spin_unlock_irqrestore(&kbdev->hwaccess_lock, flags);
|
mutex_unlock(&kbdev->mmu_hw_mutex);
|
|
return result;
|
}
|
|
struct kbase_context *kbasep_js_runpool_lookup_ctx(struct kbase_device *kbdev,
|
int as_nr)
|
{
|
int ret = 0;
|
unsigned long flags;
|
struct kbasep_js_device_data *js_devdata;
|
struct kbase_context *found_kctx = NULL;
|
|
KBASE_DEBUG_ASSERT(kbdev != NULL);
|
KBASE_DEBUG_ASSERT(0 <= as_nr && as_nr < BASE_MAX_NR_AS);
|
js_devdata = &kbdev->js_data;
|
|
spin_lock_irqsave(&kbdev->hwaccess_lock, flags);
|
|
found_kctx = kbdev->as_to_kctx[as_nr];
|
|
if (found_kctx != NULL) {
|
ret = kbase_ctx_sched_retain_ctx_refcount(found_kctx);
|
if (ret != 0) {
|
E("fail to retain ctx_refcount, ret : %d.", ret);
|
found_kctx = NULL;
|
}
|
}
|
|
spin_unlock_irqrestore(&kbdev->hwaccess_lock, flags);
|
|
return found_kctx;
|
}
|
|
/**
|
* kbasep_js_release_result - Try running more jobs after releasing a context
|
* and/or atom
|
*
|
* @kbdev: The kbase_device to operate on
|
* @kctx: The kbase_context to operate on
|
* @katom_retained_state: Retained state from the atom
|
* @runpool_ctx_attr_change: True if the runpool context attributes have changed
|
*
|
* This collates a set of actions that must happen whilst hwaccess_lock is held.
|
*
|
* This includes running more jobs when:
|
* - The previously released kctx caused a ctx attribute change,
|
* - The released atom caused a ctx attribute change,
|
* - Slots were previously blocked due to affinity restrictions,
|
* - Submission during IRQ handling failed.
|
*
|
* Return: %KBASEP_JS_RELEASE_RESULT_SCHED_ALL if context attributes were
|
* changed. The caller should try scheduling all contexts
|
*/
|
static kbasep_js_release_result kbasep_js_run_jobs_after_ctx_and_atom_release(
|
struct kbase_device *kbdev,
|
struct kbase_context *kctx,
|
struct kbasep_js_atom_retained_state *katom_retained_state,
|
bool runpool_ctx_attr_change)
|
{
|
struct kbasep_js_device_data *js_devdata;
|
kbasep_js_release_result result = 0;
|
|
KBASE_DEBUG_ASSERT(kbdev != NULL);
|
KBASE_DEBUG_ASSERT(kctx != NULL);
|
KBASE_DEBUG_ASSERT(katom_retained_state != NULL);
|
js_devdata = &kbdev->js_data;
|
|
lockdep_assert_held(&kctx->jctx.sched_info.ctx.jsctx_mutex);
|
lockdep_assert_held(&js_devdata->runpool_mutex);
|
lockdep_assert_held(&kbdev->hwaccess_lock);
|
|
if (js_devdata->nr_user_contexts_running != 0) {
|
bool retry_submit = false;
|
int retry_jobslot = 0;
|
|
if (katom_retained_state)
|
retry_submit = kbasep_js_get_atom_retry_submit_slot(
|
katom_retained_state, &retry_jobslot);
|
|
if (runpool_ctx_attr_change || retry_submit) {
|
/* A change in runpool ctx attributes might mean we can
|
* run more jobs than before */
|
result = KBASEP_JS_RELEASE_RESULT_SCHED_ALL;
|
|
KBASE_TRACE_ADD_SLOT(kbdev, JD_DONE_TRY_RUN_NEXT_JOB,
|
kctx, NULL, 0u, retry_jobslot);
|
}
|
}
|
return result;
|
}
|
|
/*
|
* Internal function to release the reference on a ctx and an atom's "retained
|
* state", only taking the runpool and as transaction mutexes
|
*
|
* This also starts more jobs running in the case of an ctx-attribute state
|
* change
|
*
|
* This does none of the followup actions for scheduling:
|
* - It does not schedule in a new context
|
* - It does not requeue or handle dying contexts
|
*
|
* For those tasks, just call kbasep_js_runpool_release_ctx() instead
|
*
|
* Requires:
|
* - Context is scheduled in, and kctx->as_nr matches kctx_as_nr
|
* - Context has a non-zero refcount
|
* - Caller holds js_kctx_info->ctx.jsctx_mutex
|
* - Caller holds js_devdata->runpool_mutex
|
*/
|
static kbasep_js_release_result kbasep_js_runpool_release_ctx_internal(
|
struct kbase_device *kbdev,
|
struct kbase_context *kctx,
|
struct kbasep_js_atom_retained_state *katom_retained_state)
|
{
|
unsigned long flags;
|
struct kbasep_js_device_data *js_devdata;
|
struct kbasep_js_kctx_info *js_kctx_info;
|
|
kbasep_js_release_result release_result = 0u;
|
bool runpool_ctx_attr_change = false;
|
int kctx_as_nr;
|
struct kbase_as *current_as;
|
int new_ref_count;
|
|
KBASE_DEBUG_ASSERT(kbdev != NULL);
|
KBASE_DEBUG_ASSERT(kctx != NULL);
|
js_kctx_info = &kctx->jctx.sched_info;
|
js_devdata = &kbdev->js_data;
|
|
/* Ensure context really is scheduled in */
|
KBASE_DEBUG_ASSERT(kbase_ctx_flag(kctx, KCTX_SCHEDULED));
|
|
kctx_as_nr = kctx->as_nr;
|
KBASE_DEBUG_ASSERT(kctx_as_nr != KBASEP_AS_NR_INVALID);
|
KBASE_DEBUG_ASSERT(atomic_read(&kctx->refcount) > 0);
|
|
/*
|
* Transaction begins on AS and runpool_irq
|
*
|
* Assert about out calling contract
|
*/
|
current_as = &kbdev->as[kctx_as_nr];
|
mutex_lock(&kbdev->pm.lock);
|
spin_lock_irqsave(&kbdev->hwaccess_lock, flags);
|
|
KBASE_DEBUG_ASSERT(kctx_as_nr == kctx->as_nr);
|
KBASE_DEBUG_ASSERT(atomic_read(&kctx->refcount) > 0);
|
|
/* Update refcount */
|
kbase_ctx_sched_release_ctx(kctx);
|
new_ref_count = atomic_read(&kctx->refcount);
|
|
/* Release the atom if it finished (i.e. wasn't soft-stopped) */
|
if (kbasep_js_has_atom_finished(katom_retained_state))
|
runpool_ctx_attr_change |= kbasep_js_ctx_attr_ctx_release_atom(
|
kbdev, kctx, katom_retained_state);
|
|
KBASE_TRACE_ADD_REFCOUNT(kbdev, JS_RELEASE_CTX, kctx, NULL, 0u,
|
new_ref_count);
|
|
if (new_ref_count == 2 && kbase_ctx_flag(kctx, KCTX_PRIVILEGED) &&
|
!kbase_pm_is_suspending(kbdev)) {
|
/* Context is kept scheduled into an address space even when
|
* there are no jobs, in this case we have to handle the
|
* situation where all jobs have been evicted from the GPU and
|
* submission is disabled.
|
*
|
* At this point we re-enable submission to allow further jobs
|
* to be executed
|
*/
|
kbasep_js_set_submit_allowed(js_devdata, kctx);
|
}
|
|
/* Make a set of checks to see if the context should be scheduled out.
|
* Note that there'll always be at least 1 reference to the context
|
* which was previously acquired by kbasep_js_schedule_ctx(). */
|
if (new_ref_count == 1 &&
|
(!kbasep_js_is_submit_allowed(js_devdata, kctx) ||
|
kbdev->pm.suspending)) {
|
int num_slots = kbdev->gpu_props.num_job_slots;
|
int slot;
|
|
/* Last reference, and we've been told to remove this context
|
* from the Run Pool */
|
dev_dbg(kbdev->dev, "JS: RunPool Remove Context %p because refcount=%d, jobs=%d, allowed=%d",
|
kctx, new_ref_count, js_kctx_info->ctx.nr_jobs,
|
kbasep_js_is_submit_allowed(js_devdata, kctx));
|
|
#if defined(CONFIG_MALI_GATOR_SUPPORT)
|
kbase_trace_mali_mmu_as_released(kctx->as_nr);
|
#endif
|
KBASE_TLSTREAM_TL_NRET_AS_CTX(&kbdev->as[kctx->as_nr], kctx);
|
|
kbase_backend_release_ctx_irq(kbdev, kctx);
|
|
if (kbdev->hwaccess.active_kctx == kctx)
|
kbdev->hwaccess.active_kctx = NULL;
|
|
/* Ctx Attribute handling
|
*
|
* Releasing atoms attributes must either happen before this, or
|
* after the KCTX_SHEDULED flag is changed, otherwise we
|
* double-decount the attributes
|
*/
|
runpool_ctx_attr_change |=
|
kbasep_js_ctx_attr_runpool_release_ctx(kbdev, kctx);
|
|
/* Releasing the context and katom retained state can allow
|
* more jobs to run */
|
release_result |=
|
kbasep_js_run_jobs_after_ctx_and_atom_release(kbdev,
|
kctx, katom_retained_state,
|
runpool_ctx_attr_change);
|
|
/*
|
* Transaction ends on AS and runpool_irq:
|
*
|
* By this point, the AS-related data is now clear and ready
|
* for re-use.
|
*
|
* Since releases only occur once for each previous successful
|
* retain, and no more retains are allowed on this context, no
|
* other thread will be operating in this
|
* code whilst we are
|
*/
|
|
/* Recalculate pullable status for all slots */
|
for (slot = 0; slot < num_slots; slot++) {
|
if (kbase_js_ctx_pullable(kctx, slot, false))
|
kbase_js_ctx_list_add_pullable_nolock(kbdev,
|
kctx, slot);
|
}
|
|
spin_unlock_irqrestore(&kbdev->hwaccess_lock, flags);
|
|
kbase_backend_release_ctx_noirq(kbdev, kctx);
|
|
mutex_unlock(&kbdev->pm.lock);
|
|
/* Note: Don't reuse kctx_as_nr now */
|
|
/* Synchronize with any timers */
|
kbase_backend_ctx_count_changed(kbdev);
|
|
/* update book-keeping info */
|
kbase_ctx_flag_clear(kctx, KCTX_SCHEDULED);
|
/* Signal any waiter that the context is not scheduled, so is
|
* safe for termination - once the jsctx_mutex is also dropped,
|
* and jobs have finished. */
|
wake_up(&js_kctx_info->ctx.is_scheduled_wait);
|
|
/* Queue an action to occur after we've dropped the lock */
|
release_result |= KBASEP_JS_RELEASE_RESULT_WAS_DESCHEDULED |
|
KBASEP_JS_RELEASE_RESULT_SCHED_ALL;
|
} else {
|
kbasep_js_run_jobs_after_ctx_and_atom_release(kbdev, kctx,
|
katom_retained_state, runpool_ctx_attr_change);
|
|
spin_unlock_irqrestore(&kbdev->hwaccess_lock, flags);
|
mutex_unlock(&kbdev->pm.lock);
|
}
|
|
return release_result;
|
}
|
|
void kbasep_js_runpool_release_ctx_nolock(struct kbase_device *kbdev,
|
struct kbase_context *kctx)
|
{
|
struct kbasep_js_atom_retained_state katom_retained_state;
|
|
/* Setup a dummy katom_retained_state */
|
kbasep_js_atom_retained_state_init_invalid(&katom_retained_state);
|
|
kbasep_js_runpool_release_ctx_internal(kbdev, kctx,
|
&katom_retained_state);
|
}
|
|
void kbasep_js_runpool_requeue_or_kill_ctx(struct kbase_device *kbdev,
|
struct kbase_context *kctx, bool has_pm_ref)
|
{
|
struct kbasep_js_device_data *js_devdata;
|
|
KBASE_DEBUG_ASSERT(kbdev != NULL);
|
KBASE_DEBUG_ASSERT(kctx != NULL);
|
js_devdata = &kbdev->js_data;
|
|
/* This is called if and only if you've you've detached the context from
|
* the Runpool Queue, and not added it back to the Runpool
|
*/
|
KBASE_DEBUG_ASSERT(!kbase_ctx_flag(kctx, KCTX_SCHEDULED));
|
|
if (kbase_ctx_flag(kctx, KCTX_DYING)) {
|
/* Dying: don't requeue, but kill all jobs on the context. This
|
* happens asynchronously */
|
dev_dbg(kbdev->dev,
|
"JS: ** Killing Context %p on RunPool Remove **", kctx);
|
kbase_js_foreach_ctx_job(kctx, &kbase_jd_cancel);
|
}
|
}
|
|
void kbasep_js_runpool_release_ctx_and_katom_retained_state(
|
struct kbase_device *kbdev, struct kbase_context *kctx,
|
struct kbasep_js_atom_retained_state *katom_retained_state)
|
{
|
struct kbasep_js_device_data *js_devdata;
|
struct kbasep_js_kctx_info *js_kctx_info;
|
kbasep_js_release_result release_result;
|
|
KBASE_DEBUG_ASSERT(kbdev != NULL);
|
KBASE_DEBUG_ASSERT(kctx != NULL);
|
js_kctx_info = &kctx->jctx.sched_info;
|
js_devdata = &kbdev->js_data;
|
|
mutex_lock(&js_devdata->queue_mutex);
|
mutex_lock(&js_kctx_info->ctx.jsctx_mutex);
|
mutex_lock(&js_devdata->runpool_mutex);
|
|
release_result = kbasep_js_runpool_release_ctx_internal(kbdev, kctx,
|
katom_retained_state);
|
|
/* Drop the runpool mutex to allow requeing kctx */
|
mutex_unlock(&js_devdata->runpool_mutex);
|
|
if ((release_result & KBASEP_JS_RELEASE_RESULT_WAS_DESCHEDULED) != 0u)
|
kbasep_js_runpool_requeue_or_kill_ctx(kbdev, kctx, true);
|
|
/* Drop the jsctx_mutex to allow scheduling in a new context */
|
|
mutex_unlock(&js_kctx_info->ctx.jsctx_mutex);
|
mutex_unlock(&js_devdata->queue_mutex);
|
|
if (release_result & KBASEP_JS_RELEASE_RESULT_SCHED_ALL)
|
kbase_js_sched_all(kbdev);
|
}
|
|
void kbasep_js_runpool_release_ctx(struct kbase_device *kbdev,
|
struct kbase_context *kctx)
|
{
|
struct kbasep_js_atom_retained_state katom_retained_state;
|
|
kbasep_js_atom_retained_state_init_invalid(&katom_retained_state);
|
|
kbasep_js_runpool_release_ctx_and_katom_retained_state(kbdev, kctx,
|
&katom_retained_state);
|
}
|
|
/* Variant of kbasep_js_runpool_release_ctx() that doesn't call into
|
* kbase_js_sched_all() */
|
static void kbasep_js_runpool_release_ctx_no_schedule(
|
struct kbase_device *kbdev, struct kbase_context *kctx)
|
{
|
struct kbasep_js_device_data *js_devdata;
|
struct kbasep_js_kctx_info *js_kctx_info;
|
kbasep_js_release_result release_result;
|
struct kbasep_js_atom_retained_state katom_retained_state_struct;
|
struct kbasep_js_atom_retained_state *katom_retained_state =
|
&katom_retained_state_struct;
|
|
KBASE_DEBUG_ASSERT(kbdev != NULL);
|
KBASE_DEBUG_ASSERT(kctx != NULL);
|
js_kctx_info = &kctx->jctx.sched_info;
|
js_devdata = &kbdev->js_data;
|
kbasep_js_atom_retained_state_init_invalid(katom_retained_state);
|
|
mutex_lock(&js_kctx_info->ctx.jsctx_mutex);
|
mutex_lock(&js_devdata->runpool_mutex);
|
|
release_result = kbasep_js_runpool_release_ctx_internal(kbdev, kctx,
|
katom_retained_state);
|
|
/* Drop the runpool mutex to allow requeing kctx */
|
mutex_unlock(&js_devdata->runpool_mutex);
|
if ((release_result & KBASEP_JS_RELEASE_RESULT_WAS_DESCHEDULED) != 0u)
|
kbasep_js_runpool_requeue_or_kill_ctx(kbdev, kctx, true);
|
|
/* Drop the jsctx_mutex to allow scheduling in a new context */
|
mutex_unlock(&js_kctx_info->ctx.jsctx_mutex);
|
|
/* NOTE: could return release_result if the caller would like to know
|
* whether it should schedule a new context, but currently no callers do
|
*/
|
}
|
|
void kbase_js_set_timeouts(struct kbase_device *kbdev)
|
{
|
lockdep_assert_held(&kbdev->hwaccess_lock);
|
|
kbase_backend_timeouts_changed(kbdev);
|
}
|
|
static bool kbasep_js_schedule_ctx(struct kbase_device *kbdev,
|
struct kbase_context *kctx)
|
{
|
struct kbasep_js_device_data *js_devdata;
|
struct kbasep_js_kctx_info *js_kctx_info;
|
struct kbase_as *new_address_space = NULL;
|
unsigned long flags;
|
bool kctx_suspended = false;
|
int as_nr;
|
|
js_devdata = &kbdev->js_data;
|
js_kctx_info = &kctx->jctx.sched_info;
|
|
/* Pick available address space for this context */
|
mutex_lock(&kbdev->mmu_hw_mutex);
|
spin_lock_irqsave(&kbdev->hwaccess_lock, flags);
|
as_nr = kbase_ctx_sched_retain_ctx(kctx);
|
spin_unlock_irqrestore(&kbdev->hwaccess_lock, flags);
|
mutex_unlock(&kbdev->mmu_hw_mutex);
|
if (as_nr == KBASEP_AS_NR_INVALID) {
|
as_nr = kbase_backend_find_and_release_free_address_space(
|
kbdev, kctx);
|
if (as_nr != KBASEP_AS_NR_INVALID) {
|
/* Attempt to retain the context again, this should
|
* succeed */
|
mutex_lock(&kbdev->mmu_hw_mutex);
|
spin_lock_irqsave(&kbdev->hwaccess_lock, flags);
|
as_nr = kbase_ctx_sched_retain_ctx(kctx);
|
spin_unlock_irqrestore(&kbdev->hwaccess_lock, flags);
|
mutex_unlock(&kbdev->mmu_hw_mutex);
|
|
WARN_ON(as_nr == KBASEP_AS_NR_INVALID);
|
}
|
}
|
if (as_nr == KBASEP_AS_NR_INVALID)
|
return false; /* No address spaces currently available */
|
|
new_address_space = &kbdev->as[as_nr];
|
|
/*
|
* Atomic transaction on the Context and Run Pool begins
|
*/
|
mutex_lock(&js_kctx_info->ctx.jsctx_mutex);
|
mutex_lock(&js_devdata->runpool_mutex);
|
mutex_lock(&kbdev->mmu_hw_mutex);
|
spin_lock_irqsave(&kbdev->hwaccess_lock, flags);
|
|
/* Check to see if context is dying due to kbase_job_zap_context() */
|
if (kbase_ctx_flag(kctx, KCTX_DYING)) {
|
/* Roll back the transaction so far and return */
|
kbase_ctx_sched_release_ctx(kctx);
|
|
spin_unlock_irqrestore(&kbdev->hwaccess_lock, flags);
|
mutex_unlock(&kbdev->mmu_hw_mutex);
|
mutex_unlock(&js_devdata->runpool_mutex);
|
mutex_unlock(&js_kctx_info->ctx.jsctx_mutex);
|
|
return false;
|
}
|
|
KBASE_TRACE_ADD_REFCOUNT(kbdev, JS_TRY_SCHEDULE_HEAD_CTX, kctx, NULL,
|
0u,
|
kbasep_js_trace_get_refcnt(kbdev, kctx));
|
|
kbase_ctx_flag_set(kctx, KCTX_SCHEDULED);
|
|
/* Assign context to previously chosen address space */
|
if (!kbase_backend_use_ctx(kbdev, kctx, as_nr)) {
|
/* Roll back the transaction so far and return */
|
kbase_ctx_sched_release_ctx(kctx);
|
kbase_ctx_flag_clear(kctx, KCTX_SCHEDULED);
|
|
spin_unlock_irqrestore(&kbdev->hwaccess_lock, flags);
|
mutex_unlock(&kbdev->mmu_hw_mutex);
|
mutex_unlock(&js_devdata->runpool_mutex);
|
mutex_unlock(&js_kctx_info->ctx.jsctx_mutex);
|
|
return false;
|
}
|
|
kbdev->hwaccess.active_kctx = kctx;
|
|
#if defined(CONFIG_MALI_GATOR_SUPPORT)
|
kbase_trace_mali_mmu_as_in_use(kctx->as_nr);
|
#endif
|
KBASE_TLSTREAM_TL_RET_AS_CTX(&kbdev->as[kctx->as_nr], kctx);
|
|
/* Cause any future waiter-on-termination to wait until the context is
|
* descheduled */
|
wake_up(&js_kctx_info->ctx.is_scheduled_wait);
|
|
/* Re-check for suspending: a suspend could've occurred, and all the
|
* contexts could've been removed from the runpool before we took this
|
* lock. In this case, we don't want to allow this context to run jobs,
|
* we just want it out immediately.
|
*
|
* The DMB required to read the suspend flag was issued recently as part
|
* of the hwaccess_lock locking. If a suspend occurs *after* that lock
|
* was taken (i.e. this condition doesn't execute), then the
|
* kbasep_js_suspend() code will cleanup this context instead (by virtue
|
* of it being called strictly after the suspend flag is set, and will
|
* wait for this lock to drop) */
|
if (kbase_pm_is_suspending(kbdev)) {
|
/* Cause it to leave at some later point */
|
bool retained;
|
|
retained = kbasep_js_runpool_retain_ctx_nolock(kbdev, kctx);
|
KBASE_DEBUG_ASSERT(retained);
|
|
kbasep_js_clear_submit_allowed(js_devdata, kctx);
|
kctx_suspended = true;
|
}
|
|
/* Transaction complete */
|
spin_unlock_irqrestore(&kbdev->hwaccess_lock, flags);
|
mutex_unlock(&kbdev->mmu_hw_mutex);
|
|
/* Synchronize with any timers */
|
kbase_backend_ctx_count_changed(kbdev);
|
|
mutex_unlock(&js_devdata->runpool_mutex);
|
mutex_unlock(&js_kctx_info->ctx.jsctx_mutex);
|
/* Note: after this point, the context could potentially get scheduled
|
* out immediately */
|
|
if (kctx_suspended) {
|
/* Finishing forcing out the context due to a suspend. Use a
|
* variant of kbasep_js_runpool_release_ctx() that doesn't
|
* schedule a new context, to prevent a risk of recursion back
|
* into this function */
|
kbasep_js_runpool_release_ctx_no_schedule(kbdev, kctx);
|
return false;
|
}
|
return true;
|
}
|
|
static bool kbase_js_use_ctx(struct kbase_device *kbdev,
|
struct kbase_context *kctx)
|
{
|
unsigned long flags;
|
|
spin_lock_irqsave(&kbdev->hwaccess_lock, flags);
|
|
if (kbase_ctx_flag(kctx, KCTX_SCHEDULED) &&
|
kbase_backend_use_ctx_sched(kbdev, kctx)) {
|
/* Context already has ASID - mark as active */
|
kbdev->hwaccess.active_kctx = kctx;
|
spin_unlock_irqrestore(&kbdev->hwaccess_lock, flags);
|
return true; /* Context already scheduled */
|
}
|
|
spin_unlock_irqrestore(&kbdev->hwaccess_lock, flags);
|
|
return kbasep_js_schedule_ctx(kbdev, kctx);
|
}
|
|
void kbasep_js_schedule_privileged_ctx(struct kbase_device *kbdev,
|
struct kbase_context *kctx)
|
{
|
struct kbasep_js_kctx_info *js_kctx_info;
|
struct kbasep_js_device_data *js_devdata;
|
bool is_scheduled;
|
|
KBASE_DEBUG_ASSERT(kbdev != NULL);
|
KBASE_DEBUG_ASSERT(kctx != NULL);
|
|
js_devdata = &kbdev->js_data;
|
js_kctx_info = &kctx->jctx.sched_info;
|
|
/* This must never be attempted whilst suspending - i.e. it should only
|
* happen in response to a syscall from a user-space thread */
|
BUG_ON(kbase_pm_is_suspending(kbdev));
|
|
mutex_lock(&js_devdata->queue_mutex);
|
mutex_lock(&js_kctx_info->ctx.jsctx_mutex);
|
|
/* Mark the context as privileged */
|
kbase_ctx_flag_set(kctx, KCTX_PRIVILEGED);
|
|
is_scheduled = kbase_ctx_flag(kctx, KCTX_SCHEDULED);
|
if (!is_scheduled) {
|
/* Add the context to the pullable list */
|
if (kbase_js_ctx_list_add_pullable_head(kbdev, kctx, 0))
|
kbase_js_sync_timers(kbdev);
|
|
/* Fast-starting requires the jsctx_mutex to be dropped,
|
* because it works on multiple ctxs */
|
mutex_unlock(&js_kctx_info->ctx.jsctx_mutex);
|
mutex_unlock(&js_devdata->queue_mutex);
|
|
/* Try to schedule the context in */
|
kbase_js_sched_all(kbdev);
|
|
/* Wait for the context to be scheduled in */
|
wait_event(kctx->jctx.sched_info.ctx.is_scheduled_wait,
|
kbase_ctx_flag(kctx, KCTX_SCHEDULED));
|
} else {
|
/* Already scheduled in - We need to retain it to keep the
|
* corresponding address space */
|
kbasep_js_runpool_retain_ctx(kbdev, kctx);
|
mutex_unlock(&js_kctx_info->ctx.jsctx_mutex);
|
mutex_unlock(&js_devdata->queue_mutex);
|
}
|
}
|
KBASE_EXPORT_TEST_API(kbasep_js_schedule_privileged_ctx);
|
|
void kbasep_js_release_privileged_ctx(struct kbase_device *kbdev,
|
struct kbase_context *kctx)
|
{
|
struct kbasep_js_kctx_info *js_kctx_info;
|
|
KBASE_DEBUG_ASSERT(kctx != NULL);
|
js_kctx_info = &kctx->jctx.sched_info;
|
|
/* We don't need to use the address space anymore */
|
mutex_lock(&js_kctx_info->ctx.jsctx_mutex);
|
kbase_ctx_flag_clear(kctx, KCTX_PRIVILEGED);
|
mutex_unlock(&js_kctx_info->ctx.jsctx_mutex);
|
|
/* Release the context - it will be scheduled out */
|
kbasep_js_runpool_release_ctx(kbdev, kctx);
|
|
kbase_js_sched_all(kbdev);
|
}
|
KBASE_EXPORT_TEST_API(kbasep_js_release_privileged_ctx);
|
|
void kbasep_js_suspend(struct kbase_device *kbdev)
|
{
|
unsigned long flags;
|
struct kbasep_js_device_data *js_devdata;
|
int i;
|
u16 retained = 0u;
|
int nr_privileged_ctx = 0;
|
|
KBASE_DEBUG_ASSERT(kbdev);
|
KBASE_DEBUG_ASSERT(kbase_pm_is_suspending(kbdev));
|
js_devdata = &kbdev->js_data;
|
|
spin_lock_irqsave(&kbdev->hwaccess_lock, flags);
|
|
/* Prevent all contexts from submitting */
|
js_devdata->runpool_irq.submit_allowed = 0;
|
|
/* Retain each of the contexts, so we can cause it to leave even if it
|
* had no refcount to begin with */
|
for (i = BASE_MAX_NR_AS - 1; i >= 0; --i) {
|
struct kbase_context *kctx = kbdev->as_to_kctx[i];
|
|
retained = retained << 1;
|
|
if (kctx) {
|
kbase_ctx_sched_retain_ctx_refcount(kctx);
|
retained |= 1u;
|
/* We can only cope with up to 1 privileged context -
|
* the instrumented context. It'll be suspended by
|
* disabling instrumentation */
|
if (kbase_ctx_flag(kctx, KCTX_PRIVILEGED)) {
|
++nr_privileged_ctx;
|
WARN_ON(nr_privileged_ctx != 1);
|
}
|
}
|
}
|
CSTD_UNUSED(nr_privileged_ctx);
|
|
spin_unlock_irqrestore(&kbdev->hwaccess_lock, flags);
|
|
/* De-ref the previous retain to ensure each context gets pulled out
|
* sometime later. */
|
for (i = 0;
|
i < BASE_MAX_NR_AS;
|
++i, retained = retained >> 1) {
|
struct kbase_context *kctx = kbdev->as_to_kctx[i];
|
|
if (retained & 1u)
|
kbasep_js_runpool_release_ctx(kbdev, kctx);
|
}
|
|
/* Caller must wait for all Power Manager active references to be
|
* dropped */
|
}
|
|
void kbasep_js_resume(struct kbase_device *kbdev)
|
{
|
struct kbasep_js_device_data *js_devdata;
|
int js;
|
|
KBASE_DEBUG_ASSERT(kbdev);
|
js_devdata = &kbdev->js_data;
|
KBASE_DEBUG_ASSERT(!kbase_pm_is_suspending(kbdev));
|
|
mutex_lock(&js_devdata->queue_mutex);
|
for (js = 0; js < kbdev->gpu_props.num_job_slots; js++) {
|
struct kbase_context *kctx, *n;
|
|
list_for_each_entry_safe(kctx, n,
|
&kbdev->js_data.ctx_list_unpullable[js],
|
jctx.sched_info.ctx.ctx_list_entry[js]) {
|
struct kbasep_js_kctx_info *js_kctx_info;
|
unsigned long flags;
|
bool timer_sync = false;
|
|
js_kctx_info = &kctx->jctx.sched_info;
|
|
mutex_lock(&js_kctx_info->ctx.jsctx_mutex);
|
mutex_lock(&js_devdata->runpool_mutex);
|
spin_lock_irqsave(&kbdev->hwaccess_lock, flags);
|
|
if (!kbase_ctx_flag(kctx, KCTX_SCHEDULED) &&
|
kbase_js_ctx_pullable(kctx, js, false))
|
timer_sync =
|
kbase_js_ctx_list_add_pullable_nolock(
|
kbdev, kctx, js);
|
spin_unlock_irqrestore(&kbdev->hwaccess_lock, flags);
|
if (timer_sync)
|
kbase_backend_ctx_count_changed(kbdev);
|
mutex_unlock(&js_devdata->runpool_mutex);
|
mutex_unlock(&js_kctx_info->ctx.jsctx_mutex);
|
}
|
}
|
mutex_unlock(&js_devdata->queue_mutex);
|
|
/* Restart atom processing */
|
kbase_js_sched_all(kbdev);
|
|
/* JS Resume complete */
|
}
|
|
bool kbase_js_is_atom_valid(struct kbase_device *kbdev,
|
struct kbase_jd_atom *katom)
|
{
|
if ((katom->core_req & BASE_JD_REQ_FS) &&
|
(katom->core_req & (BASE_JD_REQ_CS | BASE_JD_REQ_ONLY_COMPUTE |
|
BASE_JD_REQ_T)))
|
return false;
|
|
if (kbase_hw_has_issue(kbdev, BASE_HW_ISSUE_8987) &&
|
(katom->core_req & BASE_JD_REQ_ONLY_COMPUTE) &&
|
(katom->core_req & (BASE_JD_REQ_CS | BASE_JD_REQ_T)))
|
return false;
|
|
return true;
|
}
|
|
static int kbase_js_get_slot(struct kbase_device *kbdev,
|
struct kbase_jd_atom *katom)
|
{
|
if (katom->core_req & BASE_JD_REQ_FS)
|
return 0;
|
|
if (katom->core_req & BASE_JD_REQ_ONLY_COMPUTE) {
|
if (katom->device_nr == 1 &&
|
kbdev->gpu_props.num_core_groups == 2)
|
return 2;
|
if (kbase_hw_has_issue(kbdev, BASE_HW_ISSUE_8987))
|
return 2;
|
}
|
|
return 1;
|
}
|
|
bool kbase_js_dep_resolved_submit(struct kbase_context *kctx,
|
struct kbase_jd_atom *katom)
|
{
|
bool enqueue_required;
|
|
katom->slot_nr = kbase_js_get_slot(kctx->kbdev, katom);
|
|
lockdep_assert_held(&kctx->kbdev->hwaccess_lock);
|
lockdep_assert_held(&kctx->jctx.lock);
|
|
/* If slot will transition from unpullable to pullable then add to
|
* pullable list */
|
if (jsctx_rb_none_to_pull(kctx, katom->slot_nr)) {
|
enqueue_required = true;
|
} else {
|
enqueue_required = false;
|
}
|
if ((katom->atom_flags & KBASE_KATOM_FLAG_X_DEP_BLOCKED) ||
|
(katom->pre_dep && (katom->pre_dep->atom_flags &
|
KBASE_KATOM_FLAG_JSCTX_IN_X_DEP_LIST))) {
|
int prio = katom->sched_priority;
|
int js = katom->slot_nr;
|
struct jsctx_queue *queue = &kctx->jsctx_queue[prio][js];
|
|
list_add_tail(&katom->queue, &queue->x_dep_head);
|
katom->atom_flags |= KBASE_KATOM_FLAG_JSCTX_IN_X_DEP_LIST;
|
enqueue_required = false;
|
} else {
|
/* Check if there are lower priority jobs to soft stop */
|
kbase_job_slot_ctx_priority_check_locked(kctx, katom);
|
|
/* Add atom to ring buffer. */
|
jsctx_tree_add(kctx, katom);
|
katom->atom_flags |= KBASE_KATOM_FLAG_JSCTX_IN_TREE;
|
}
|
|
return enqueue_required;
|
}
|
|
/**
|
* kbase_js_move_to_tree - Move atom (and any dependent atoms) to the
|
* runnable_tree, ready for execution
|
* @katom: Atom to submit
|
*
|
* It is assumed that @katom does not have KBASE_KATOM_FLAG_X_DEP_BLOCKED set,
|
* but is still present in the x_dep list. If @katom has a same-slot dependent
|
* atom then that atom (and any dependents) will also be moved.
|
*/
|
static void kbase_js_move_to_tree(struct kbase_jd_atom *katom)
|
{
|
lockdep_assert_held(&katom->kctx->kbdev->hwaccess_lock);
|
|
while (katom) {
|
WARN_ON(!(katom->atom_flags &
|
KBASE_KATOM_FLAG_JSCTX_IN_X_DEP_LIST));
|
|
if (!(katom->atom_flags & KBASE_KATOM_FLAG_X_DEP_BLOCKED)) {
|
list_del(&katom->queue);
|
katom->atom_flags &=
|
~KBASE_KATOM_FLAG_JSCTX_IN_X_DEP_LIST;
|
jsctx_tree_add(katom->kctx, katom);
|
katom->atom_flags |= KBASE_KATOM_FLAG_JSCTX_IN_TREE;
|
} else {
|
break;
|
}
|
|
katom = katom->post_dep;
|
}
|
}
|
|
|
/**
|
* kbase_js_evict_deps - Evict dependencies of a failed atom.
|
* @kctx: Context pointer
|
* @katom: Pointer to the atom that has failed.
|
* @js: The job slot the katom was run on.
|
* @prio: Priority of the katom.
|
*
|
* Remove all post dependencies of an atom from the context ringbuffers.
|
*
|
* The original atom's event_code will be propogated to all dependent atoms.
|
*
|
* Context: Caller must hold the HW access lock
|
*/
|
static void kbase_js_evict_deps(struct kbase_context *kctx,
|
struct kbase_jd_atom *katom, int js, int prio)
|
{
|
struct kbase_jd_atom *x_dep = katom->x_post_dep;
|
struct kbase_jd_atom *next_katom = katom->post_dep;
|
|
lockdep_assert_held(&kctx->kbdev->hwaccess_lock);
|
|
if (next_katom) {
|
KBASE_DEBUG_ASSERT(next_katom->status !=
|
KBASE_JD_ATOM_STATE_HW_COMPLETED);
|
next_katom->will_fail_event_code = katom->event_code;
|
|
}
|
|
/* Has cross slot depenency. */
|
if (x_dep && (x_dep->atom_flags & (KBASE_KATOM_FLAG_JSCTX_IN_TREE |
|
KBASE_KATOM_FLAG_JSCTX_IN_X_DEP_LIST))) {
|
/* Remove dependency.*/
|
x_dep->atom_flags &= ~KBASE_KATOM_FLAG_X_DEP_BLOCKED;
|
|
/* Fail if it had a data dependency. */
|
if (x_dep->atom_flags & KBASE_KATOM_FLAG_FAIL_BLOCKER) {
|
x_dep->will_fail_event_code = katom->event_code;
|
}
|
if (x_dep->atom_flags & KBASE_KATOM_FLAG_JSCTX_IN_X_DEP_LIST)
|
kbase_js_move_to_tree(x_dep);
|
}
|
}
|
|
struct kbase_jd_atom *kbase_js_pull(struct kbase_context *kctx, int js)
|
{
|
struct kbase_jd_atom *katom;
|
struct kbasep_js_device_data *js_devdata;
|
struct kbase_device *kbdev;
|
int pulled;
|
|
KBASE_DEBUG_ASSERT(kctx);
|
|
kbdev = kctx->kbdev;
|
|
js_devdata = &kbdev->js_data;
|
lockdep_assert_held(&kbdev->hwaccess_lock);
|
|
if (!kbasep_js_is_submit_allowed(js_devdata, kctx))
|
return NULL;
|
if (kbase_pm_is_suspending(kbdev))
|
return NULL;
|
|
katom = jsctx_rb_peek(kctx, js);
|
if (!katom)
|
return NULL;
|
if (kctx->blocked_js[js][katom->sched_priority])
|
return NULL;
|
if (atomic_read(&katom->blocked))
|
return NULL;
|
|
/* Due to ordering restrictions when unpulling atoms on failure, we do
|
* not allow multiple runs of fail-dep atoms from the same context to be
|
* present on the same slot */
|
if (katom->pre_dep && atomic_read(&kctx->atoms_pulled_slot[js])) {
|
struct kbase_jd_atom *prev_atom =
|
kbase_backend_inspect_tail(kbdev, js);
|
|
if (prev_atom && prev_atom->kctx != kctx)
|
return NULL;
|
}
|
|
if (katom->atom_flags & KBASE_KATOM_FLAG_X_DEP_BLOCKED) {
|
if (katom->x_pre_dep->gpu_rb_state ==
|
KBASE_ATOM_GPU_RB_NOT_IN_SLOT_RB ||
|
katom->x_pre_dep->will_fail_event_code)
|
return NULL;
|
if ((katom->atom_flags & KBASE_KATOM_FLAG_FAIL_BLOCKER) &&
|
kbase_backend_nr_atoms_on_slot(kbdev, js))
|
return NULL;
|
}
|
|
kbase_ctx_flag_set(kctx, KCTX_PULLED);
|
|
pulled = atomic_inc_return(&kctx->atoms_pulled);
|
if (pulled == 1 && !kctx->slots_pullable) {
|
WARN_ON(kbase_ctx_flag(kctx, KCTX_RUNNABLE_REF));
|
kbase_ctx_flag_set(kctx, KCTX_RUNNABLE_REF);
|
atomic_inc(&kbdev->js_data.nr_contexts_runnable);
|
}
|
atomic_inc(&kctx->atoms_pulled_slot[katom->slot_nr]);
|
kctx->atoms_pulled_slot_pri[katom->slot_nr][katom->sched_priority]++;
|
jsctx_rb_pull(kctx, katom);
|
|
kbasep_js_runpool_retain_ctx_nolock(kbdev, kctx);
|
|
katom->atom_flags |= KBASE_KATOM_FLAG_HOLDING_CTX_REF;
|
|
katom->ticks = 0;
|
|
return katom;
|
}
|
|
|
static void js_return_worker(struct work_struct *data)
|
{
|
struct kbase_jd_atom *katom = container_of(data, struct kbase_jd_atom,
|
work);
|
struct kbase_context *kctx = katom->kctx;
|
struct kbase_device *kbdev = kctx->kbdev;
|
struct kbasep_js_device_data *js_devdata = &kbdev->js_data;
|
struct kbasep_js_kctx_info *js_kctx_info = &kctx->jctx.sched_info;
|
struct kbasep_js_atom_retained_state retained_state;
|
int js = katom->slot_nr;
|
int prio = katom->sched_priority;
|
bool timer_sync = false;
|
bool context_idle = false;
|
unsigned long flags;
|
base_jd_core_req core_req = katom->core_req;
|
u64 affinity = katom->affinity;
|
enum kbase_atom_coreref_state coreref_state = katom->coreref_state;
|
|
KBASE_TLSTREAM_TL_EVENT_ATOM_SOFTSTOP_EX(katom);
|
|
kbase_backend_complete_wq(kbdev, katom);
|
|
if (kbase_hw_has_issue(kbdev, BASE_HW_ISSUE_8316))
|
kbase_as_poking_timer_release_atom(kbdev, kctx, katom);
|
|
kbasep_js_atom_retained_state_copy(&retained_state, katom);
|
|
mutex_lock(&js_devdata->queue_mutex);
|
mutex_lock(&js_kctx_info->ctx.jsctx_mutex);
|
|
atomic_dec(&kctx->atoms_pulled);
|
atomic_dec(&kctx->atoms_pulled_slot[js]);
|
|
atomic_dec(&katom->blocked);
|
|
spin_lock_irqsave(&kbdev->hwaccess_lock, flags);
|
|
kctx->atoms_pulled_slot_pri[js][katom->sched_priority]--;
|
|
if (!atomic_read(&kctx->atoms_pulled_slot[js]) &&
|
jsctx_rb_none_to_pull(kctx, js))
|
timer_sync |= kbase_js_ctx_list_remove_nolock(kbdev, kctx, js);
|
|
/* If this slot has been blocked due to soft-stopped atoms, and all
|
* atoms have now been processed, then unblock the slot */
|
if (!kctx->atoms_pulled_slot_pri[js][prio] &&
|
kctx->blocked_js[js][prio]) {
|
kctx->blocked_js[js][prio] = false;
|
|
/* Only mark the slot as pullable if the context is not idle -
|
* that case is handled below */
|
if (atomic_read(&kctx->atoms_pulled) &&
|
kbase_js_ctx_pullable(kctx, js, true))
|
timer_sync |= kbase_js_ctx_list_add_pullable_nolock(
|
kbdev, kctx, js);
|
}
|
|
if (!atomic_read(&kctx->atoms_pulled)) {
|
if (!kctx->slots_pullable) {
|
WARN_ON(!kbase_ctx_flag(kctx, KCTX_RUNNABLE_REF));
|
kbase_ctx_flag_clear(kctx, KCTX_RUNNABLE_REF);
|
atomic_dec(&kbdev->js_data.nr_contexts_runnable);
|
timer_sync = true;
|
}
|
|
if (kctx->as_nr != KBASEP_AS_NR_INVALID &&
|
!kbase_ctx_flag(kctx, KCTX_DYING)) {
|
int num_slots = kbdev->gpu_props.num_job_slots;
|
int slot;
|
|
if (!kbasep_js_is_submit_allowed(js_devdata, kctx))
|
kbasep_js_set_submit_allowed(js_devdata, kctx);
|
|
for (slot = 0; slot < num_slots; slot++) {
|
if (kbase_js_ctx_pullable(kctx, slot, true))
|
timer_sync |=
|
kbase_js_ctx_list_add_pullable_nolock(
|
kbdev, kctx, slot);
|
}
|
}
|
|
kbase_jm_idle_ctx(kbdev, kctx);
|
|
context_idle = true;
|
}
|
|
spin_unlock_irqrestore(&kbdev->hwaccess_lock, flags);
|
|
if (context_idle) {
|
WARN_ON(!kbase_ctx_flag(kctx, KCTX_ACTIVE));
|
kbase_ctx_flag_clear(kctx, KCTX_ACTIVE);
|
kbase_pm_context_idle(kbdev);
|
}
|
|
if (timer_sync)
|
kbase_js_sync_timers(kbdev);
|
|
mutex_unlock(&js_kctx_info->ctx.jsctx_mutex);
|
mutex_unlock(&js_devdata->queue_mutex);
|
|
katom->atom_flags &= ~KBASE_KATOM_FLAG_HOLDING_CTX_REF;
|
kbasep_js_runpool_release_ctx_and_katom_retained_state(kbdev, kctx,
|
&retained_state);
|
|
kbase_js_sched_all(kbdev);
|
|
kbase_backend_complete_wq_post_sched(kbdev, core_req, affinity,
|
coreref_state);
|
}
|
|
void kbase_js_unpull(struct kbase_context *kctx, struct kbase_jd_atom *katom)
|
{
|
lockdep_assert_held(&kctx->kbdev->hwaccess_lock);
|
|
jsctx_rb_unpull(kctx, katom);
|
|
WARN_ON(work_pending(&katom->work));
|
|
/* Block re-submission until workqueue has run */
|
atomic_inc(&katom->blocked);
|
|
kbase_job_check_leave_disjoint(kctx->kbdev, katom);
|
|
KBASE_DEBUG_ASSERT(0 == object_is_on_stack(&katom->work));
|
INIT_WORK(&katom->work, js_return_worker);
|
queue_work(kctx->jctx.job_done_wq, &katom->work);
|
}
|
|
bool kbase_js_complete_atom_wq(struct kbase_context *kctx,
|
struct kbase_jd_atom *katom)
|
{
|
struct kbasep_js_kctx_info *js_kctx_info;
|
struct kbasep_js_device_data *js_devdata;
|
struct kbase_device *kbdev;
|
unsigned long flags;
|
bool timer_sync = false;
|
int atom_slot;
|
bool context_idle = false;
|
int prio = katom->sched_priority;
|
|
kbdev = kctx->kbdev;
|
atom_slot = katom->slot_nr;
|
|
js_kctx_info = &kctx->jctx.sched_info;
|
js_devdata = &kbdev->js_data;
|
|
lockdep_assert_held(&js_kctx_info->ctx.jsctx_mutex);
|
|
mutex_lock(&js_devdata->runpool_mutex);
|
spin_lock_irqsave(&kbdev->hwaccess_lock, flags);
|
|
if (katom->atom_flags & KBASE_KATOM_FLAG_JSCTX_IN_TREE) {
|
context_idle = !atomic_dec_return(&kctx->atoms_pulled);
|
atomic_dec(&kctx->atoms_pulled_slot[atom_slot]);
|
kctx->atoms_pulled_slot_pri[atom_slot][prio]--;
|
|
if (!atomic_read(&kctx->atoms_pulled) &&
|
!kctx->slots_pullable) {
|
WARN_ON(!kbase_ctx_flag(kctx, KCTX_RUNNABLE_REF));
|
kbase_ctx_flag_clear(kctx, KCTX_RUNNABLE_REF);
|
atomic_dec(&kbdev->js_data.nr_contexts_runnable);
|
timer_sync = true;
|
}
|
|
/* If this slot has been blocked due to soft-stopped atoms, and
|
* all atoms have now been processed, then unblock the slot */
|
if (!kctx->atoms_pulled_slot_pri[atom_slot][prio]
|
&& kctx->blocked_js[atom_slot][prio]) {
|
kctx->blocked_js[atom_slot][prio] = false;
|
if (kbase_js_ctx_pullable(kctx, atom_slot, true))
|
timer_sync |=
|
kbase_js_ctx_list_add_pullable_nolock(
|
kbdev, kctx, atom_slot);
|
}
|
}
|
WARN_ON(!(katom->atom_flags & KBASE_KATOM_FLAG_JSCTX_IN_TREE));
|
|
if (!atomic_read(&kctx->atoms_pulled_slot[atom_slot]) &&
|
jsctx_rb_none_to_pull(kctx, atom_slot)) {
|
if (!list_empty(
|
&kctx->jctx.sched_info.ctx.ctx_list_entry[atom_slot]))
|
timer_sync |= kbase_js_ctx_list_remove_nolock(
|
kctx->kbdev, kctx, atom_slot);
|
}
|
|
/*
|
* If submission is disabled on this context (most likely due to an
|
* atom failure) and there are now no atoms left in the system then
|
* re-enable submission so that context can be scheduled again.
|
*/
|
if (!kbasep_js_is_submit_allowed(js_devdata, kctx) &&
|
!atomic_read(&kctx->atoms_pulled) &&
|
!kbase_ctx_flag(kctx, KCTX_DYING)) {
|
int js;
|
|
kbasep_js_set_submit_allowed(js_devdata, kctx);
|
|
for (js = 0; js < kbdev->gpu_props.num_job_slots; js++) {
|
if (kbase_js_ctx_pullable(kctx, js, true))
|
timer_sync |=
|
kbase_js_ctx_list_add_pullable_nolock(
|
kbdev, kctx, js);
|
}
|
} else if (katom->x_post_dep &&
|
kbasep_js_is_submit_allowed(js_devdata, kctx)) {
|
int js;
|
|
for (js = 0; js < kbdev->gpu_props.num_job_slots; js++) {
|
if (kbase_js_ctx_pullable(kctx, js, true))
|
timer_sync |=
|
kbase_js_ctx_list_add_pullable_nolock(
|
kbdev, kctx, js);
|
}
|
}
|
|
/* Mark context as inactive. The pm reference will be dropped later in
|
* jd_done_worker().
|
*/
|
if (context_idle)
|
kbase_ctx_flag_clear(kctx, KCTX_ACTIVE);
|
|
spin_unlock_irqrestore(&kbdev->hwaccess_lock, flags);
|
if (timer_sync)
|
kbase_backend_ctx_count_changed(kbdev);
|
mutex_unlock(&js_devdata->runpool_mutex);
|
|
return context_idle;
|
}
|
|
struct kbase_jd_atom *kbase_js_complete_atom(struct kbase_jd_atom *katom,
|
ktime_t *end_timestamp)
|
{
|
u64 microseconds_spent = 0;
|
struct kbase_device *kbdev;
|
struct kbase_context *kctx = katom->kctx;
|
struct kbase_jd_atom *x_dep = katom->x_post_dep;
|
|
kbdev = kctx->kbdev;
|
|
|
lockdep_assert_held(&kctx->kbdev->hwaccess_lock);
|
|
if (katom->will_fail_event_code)
|
katom->event_code = katom->will_fail_event_code;
|
|
katom->status = KBASE_JD_ATOM_STATE_HW_COMPLETED;
|
|
if (katom->event_code != BASE_JD_EVENT_DONE) {
|
kbase_js_evict_deps(kctx, katom, katom->slot_nr,
|
katom->sched_priority);
|
}
|
|
#if defined(CONFIG_MALI_GATOR_SUPPORT)
|
kbase_trace_mali_job_slots_event(GATOR_MAKE_EVENT(GATOR_JOB_SLOT_STOP,
|
katom->slot_nr), NULL, 0);
|
#endif
|
|
/* Calculate the job's time used */
|
if (end_timestamp != NULL) {
|
/* Only calculating it for jobs that really run on the HW (e.g.
|
* removed from next jobs never actually ran, so really did take
|
* zero time) */
|
ktime_t tick_diff = ktime_sub(*end_timestamp,
|
katom->start_timestamp);
|
|
microseconds_spent = ktime_to_ns(tick_diff);
|
|
do_div(microseconds_spent, 1000);
|
|
/* Round up time spent to the minimum timer resolution */
|
if (microseconds_spent < KBASEP_JS_TICK_RESOLUTION_US)
|
microseconds_spent = KBASEP_JS_TICK_RESOLUTION_US;
|
}
|
|
|
kbase_jd_done(katom, katom->slot_nr, end_timestamp, 0);
|
|
/* Unblock cross dependency if present */
|
if (x_dep && (katom->event_code == BASE_JD_EVENT_DONE ||
|
!(x_dep->atom_flags & KBASE_KATOM_FLAG_FAIL_BLOCKER)) &&
|
(x_dep->atom_flags & KBASE_KATOM_FLAG_X_DEP_BLOCKED)) {
|
bool was_pullable = kbase_js_ctx_pullable(kctx, x_dep->slot_nr,
|
false);
|
x_dep->atom_flags &= ~KBASE_KATOM_FLAG_X_DEP_BLOCKED;
|
kbase_js_move_to_tree(x_dep);
|
if (!was_pullable && kbase_js_ctx_pullable(kctx, x_dep->slot_nr,
|
false))
|
kbase_js_ctx_list_add_pullable_nolock(kbdev, kctx,
|
x_dep->slot_nr);
|
|
if (x_dep->atom_flags & KBASE_KATOM_FLAG_JSCTX_IN_TREE)
|
return x_dep;
|
}
|
|
return NULL;
|
}
|
|
void kbase_js_sched(struct kbase_device *kbdev, int js_mask)
|
{
|
struct kbasep_js_device_data *js_devdata;
|
struct kbase_context *last_active;
|
bool timer_sync = false;
|
bool ctx_waiting = false;
|
|
js_devdata = &kbdev->js_data;
|
|
down(&js_devdata->schedule_sem);
|
mutex_lock(&js_devdata->queue_mutex);
|
|
last_active = kbdev->hwaccess.active_kctx;
|
|
while (js_mask) {
|
int js;
|
|
js = ffs(js_mask) - 1;
|
|
while (1) {
|
struct kbase_context *kctx;
|
unsigned long flags;
|
bool context_idle = false;
|
|
kctx = kbase_js_ctx_list_pop_head(kbdev, js);
|
|
if (!kctx) {
|
js_mask &= ~(1 << js);
|
break; /* No contexts on pullable list */
|
}
|
|
if (!kbase_ctx_flag(kctx, KCTX_ACTIVE)) {
|
context_idle = true;
|
|
if (kbase_pm_context_active_handle_suspend(
|
kbdev,
|
KBASE_PM_SUSPEND_HANDLER_DONT_INCREASE)) {
|
/* Suspend pending - return context to
|
* queue and stop scheduling */
|
mutex_lock(
|
&kctx->jctx.sched_info.ctx.jsctx_mutex);
|
if (kbase_js_ctx_list_add_pullable_head(
|
kctx->kbdev, kctx, js))
|
kbase_js_sync_timers(kbdev);
|
mutex_unlock(
|
&kctx->jctx.sched_info.ctx.jsctx_mutex);
|
mutex_unlock(&js_devdata->queue_mutex);
|
up(&js_devdata->schedule_sem);
|
return;
|
}
|
kbase_ctx_flag_set(kctx, KCTX_ACTIVE);
|
}
|
|
if (!kbase_js_use_ctx(kbdev, kctx)) {
|
mutex_lock(
|
&kctx->jctx.sched_info.ctx.jsctx_mutex);
|
/* Context can not be used at this time */
|
spin_lock_irqsave(&kbdev->hwaccess_lock, flags);
|
if (kbase_js_ctx_pullable(kctx, js, false)
|
|| kbase_ctx_flag(kctx, KCTX_PRIVILEGED))
|
timer_sync |=
|
kbase_js_ctx_list_add_pullable_head_nolock(
|
kctx->kbdev, kctx, js);
|
else
|
timer_sync |=
|
kbase_js_ctx_list_add_unpullable_nolock(
|
kctx->kbdev, kctx, js);
|
spin_unlock_irqrestore(&kbdev->hwaccess_lock,
|
flags);
|
mutex_unlock(
|
&kctx->jctx.sched_info.ctx.jsctx_mutex);
|
if (context_idle) {
|
WARN_ON(!kbase_ctx_flag(kctx, KCTX_ACTIVE));
|
kbase_ctx_flag_clear(kctx, KCTX_ACTIVE);
|
kbase_pm_context_idle(kbdev);
|
}
|
|
/* No more jobs can be submitted on this slot */
|
js_mask &= ~(1 << js);
|
break;
|
}
|
mutex_lock(&kctx->jctx.sched_info.ctx.jsctx_mutex);
|
spin_lock_irqsave(&kbdev->hwaccess_lock, flags);
|
|
kbase_ctx_flag_clear(kctx, KCTX_PULLED);
|
|
if (!kbase_jm_kick(kbdev, 1 << js))
|
/* No more jobs can be submitted on this slot */
|
js_mask &= ~(1 << js);
|
|
if (!kbase_ctx_flag(kctx, KCTX_PULLED)) {
|
bool pullable = kbase_js_ctx_pullable(kctx, js,
|
true);
|
|
/* Failed to pull jobs - push to head of list.
|
* Unless this context is already 'active', in
|
* which case it's effectively already scheduled
|
* so push it to the back of the list. */
|
if (pullable && kctx == last_active)
|
timer_sync |=
|
kbase_js_ctx_list_add_pullable_nolock(
|
kctx->kbdev,
|
kctx, js);
|
else if (pullable)
|
timer_sync |=
|
kbase_js_ctx_list_add_pullable_head_nolock(
|
kctx->kbdev,
|
kctx, js);
|
else
|
timer_sync |=
|
kbase_js_ctx_list_add_unpullable_nolock(
|
kctx->kbdev,
|
kctx, js);
|
|
/* If this context is not the active context,
|
* but the active context is pullable on this
|
* slot, then we need to remove the active
|
* marker to prevent it from submitting atoms in
|
* the IRQ handler, which would prevent this
|
* context from making progress. */
|
if (last_active && kctx != last_active &&
|
kbase_js_ctx_pullable(
|
last_active, js, true))
|
ctx_waiting = true;
|
|
if (context_idle) {
|
kbase_jm_idle_ctx(kbdev, kctx);
|
spin_unlock_irqrestore(
|
&kbdev->hwaccess_lock,
|
flags);
|
WARN_ON(!kbase_ctx_flag(kctx, KCTX_ACTIVE));
|
kbase_ctx_flag_clear(kctx, KCTX_ACTIVE);
|
kbase_pm_context_idle(kbdev);
|
} else {
|
spin_unlock_irqrestore(
|
&kbdev->hwaccess_lock,
|
flags);
|
}
|
mutex_unlock(
|
&kctx->jctx.sched_info.ctx.jsctx_mutex);
|
|
js_mask &= ~(1 << js);
|
break; /* Could not run atoms on this slot */
|
}
|
|
/* Push to back of list */
|
if (kbase_js_ctx_pullable(kctx, js, true))
|
timer_sync |=
|
kbase_js_ctx_list_add_pullable_nolock(
|
kctx->kbdev, kctx, js);
|
else
|
timer_sync |=
|
kbase_js_ctx_list_add_unpullable_nolock(
|
kctx->kbdev, kctx, js);
|
|
spin_unlock_irqrestore(&kbdev->hwaccess_lock, flags);
|
mutex_unlock(&kctx->jctx.sched_info.ctx.jsctx_mutex);
|
}
|
}
|
|
if (timer_sync)
|
kbase_js_sync_timers(kbdev);
|
|
if (kbdev->hwaccess.active_kctx == last_active && ctx_waiting)
|
kbdev->hwaccess.active_kctx = NULL;
|
|
mutex_unlock(&js_devdata->queue_mutex);
|
up(&js_devdata->schedule_sem);
|
}
|
|
void kbase_js_zap_context(struct kbase_context *kctx)
|
{
|
struct kbase_device *kbdev = kctx->kbdev;
|
struct kbasep_js_device_data *js_devdata = &kbdev->js_data;
|
struct kbasep_js_kctx_info *js_kctx_info = &kctx->jctx.sched_info;
|
int js;
|
|
/*
|
* Critical assumption: No more submission is possible outside of the
|
* workqueue. This is because the OS *must* prevent U/K calls (IOCTLs)
|
* whilst the struct kbase_context is terminating.
|
*/
|
|
/* First, atomically do the following:
|
* - mark the context as dying
|
* - try to evict it from the queue */
|
mutex_lock(&kctx->jctx.lock);
|
mutex_lock(&js_devdata->queue_mutex);
|
mutex_lock(&js_kctx_info->ctx.jsctx_mutex);
|
kbase_ctx_flag_set(kctx, KCTX_DYING);
|
|
dev_dbg(kbdev->dev, "Zap: Try Evict Ctx %p", kctx);
|
|
/*
|
* At this point we know:
|
* - If eviction succeeded, it was in the queue, but now no
|
* longer is
|
* - We must cancel the jobs here. No Power Manager active reference to
|
* release.
|
* - This happens asynchronously - kbase_jd_zap_context() will wait for
|
* those jobs to be killed.
|
* - If eviction failed, then it wasn't in the queue. It is one
|
* of the following:
|
* - a. it didn't have any jobs, and so is not in the Queue or
|
* the Run Pool (not scheduled)
|
* - Hence, no more work required to cancel jobs. No Power Manager
|
* active reference to release.
|
* - b. it was in the middle of a scheduling transaction (and thus must
|
* have at least 1 job). This can happen from a syscall or a
|
* kernel thread. We still hold the jsctx_mutex, and so the thread
|
* must be waiting inside kbasep_js_try_schedule_head_ctx(),
|
* before checking whether the runpool is full. That thread will
|
* continue after we drop the mutex, and will notice the context
|
* is dying. It will rollback the transaction, killing all jobs at
|
* the same time. kbase_jd_zap_context() will wait for those jobs
|
* to be killed.
|
* - Hence, no more work required to cancel jobs, or to release the
|
* Power Manager active reference.
|
* - c. it is scheduled, and may or may not be running jobs
|
* - We must cause it to leave the runpool by stopping it from
|
* submitting any more jobs. When it finally does leave,
|
* kbasep_js_runpool_requeue_or_kill_ctx() will kill all remaining jobs
|
* (because it is dying), release the Power Manager active reference,
|
* and will not requeue the context in the queue.
|
* kbase_jd_zap_context() will wait for those jobs to be killed.
|
* - Hence, work required just to make it leave the runpool. Cancelling
|
* jobs and releasing the Power manager active reference will be
|
* handled when it leaves the runpool.
|
*/
|
if (!kbase_ctx_flag(kctx, KCTX_SCHEDULED)) {
|
for (js = 0; js < kbdev->gpu_props.num_job_slots; js++) {
|
if (!list_empty(
|
&kctx->jctx.sched_info.ctx.ctx_list_entry[js]))
|
list_del_init(
|
&kctx->jctx.sched_info.ctx.ctx_list_entry[js]);
|
}
|
|
/* The following events require us to kill off remaining jobs
|
* and update PM book-keeping:
|
* - we evicted it correctly (it must have jobs to be in the
|
* Queue)
|
*
|
* These events need no action, but take this path anyway:
|
* - Case a: it didn't have any jobs, and was never in the Queue
|
* - Case b: scheduling transaction will be partially rolled-
|
* back (this already cancels the jobs)
|
*/
|
|
KBASE_TRACE_ADD(kbdev, JM_ZAP_NON_SCHEDULED, kctx, NULL, 0u,
|
kbase_ctx_flag(kctx, KCTX_SCHEDULED));
|
|
dev_dbg(kbdev->dev, "Zap: Ctx %p scheduled=0", kctx);
|
|
/* Only cancel jobs when we evicted from the
|
* queue. No Power Manager active reference was held.
|
*
|
* Having is_dying set ensures that this kills, and
|
* doesn't requeue */
|
kbasep_js_runpool_requeue_or_kill_ctx(kbdev, kctx, false);
|
|
mutex_unlock(&js_kctx_info->ctx.jsctx_mutex);
|
mutex_unlock(&js_devdata->queue_mutex);
|
mutex_unlock(&kctx->jctx.lock);
|
} else {
|
unsigned long flags;
|
bool was_retained;
|
|
/* Case c: didn't evict, but it is scheduled - it's in the Run
|
* Pool */
|
KBASE_TRACE_ADD(kbdev, JM_ZAP_SCHEDULED, kctx, NULL, 0u,
|
kbase_ctx_flag(kctx, KCTX_SCHEDULED));
|
dev_dbg(kbdev->dev, "Zap: Ctx %p is in RunPool", kctx);
|
|
/* Disable the ctx from submitting any more jobs */
|
spin_lock_irqsave(&kbdev->hwaccess_lock, flags);
|
|
kbasep_js_clear_submit_allowed(js_devdata, kctx);
|
|
/* Retain and (later) release the context whilst it is is now
|
* disallowed from submitting jobs - ensures that someone
|
* somewhere will be removing the context later on */
|
was_retained = kbasep_js_runpool_retain_ctx_nolock(kbdev, kctx);
|
|
/* Since it's scheduled and we have the jsctx_mutex, it must be
|
* retained successfully */
|
KBASE_DEBUG_ASSERT(was_retained);
|
|
dev_dbg(kbdev->dev, "Zap: Ctx %p Kill Any Running jobs", kctx);
|
|
/* Cancel any remaining running jobs for this kctx - if any.
|
* Submit is disallowed which takes effect immediately, so no
|
* more new jobs will appear after we do this. */
|
for (js = 0; js < kbdev->gpu_props.num_job_slots; js++)
|
kbase_job_slot_hardstop(kctx, js, NULL);
|
|
spin_unlock_irqrestore(&kbdev->hwaccess_lock, flags);
|
mutex_unlock(&js_kctx_info->ctx.jsctx_mutex);
|
mutex_unlock(&js_devdata->queue_mutex);
|
mutex_unlock(&kctx->jctx.lock);
|
|
dev_dbg(kbdev->dev, "Zap: Ctx %p Release (may or may not schedule out immediately)",
|
kctx);
|
|
kbasep_js_runpool_release_ctx(kbdev, kctx);
|
}
|
|
KBASE_TRACE_ADD(kbdev, JM_ZAP_DONE, kctx, NULL, 0u, 0u);
|
|
/* After this, you must wait on both the
|
* kbase_jd_context::zero_jobs_wait and the
|
* kbasep_js_kctx_info::ctx::is_scheduled_waitq - to wait for the jobs
|
* to be destroyed, and the context to be de-scheduled (if it was on the
|
* runpool).
|
*
|
* kbase_jd_zap_context() will do this. */
|
}
|
|
static inline int trace_get_refcnt(struct kbase_device *kbdev,
|
struct kbase_context *kctx)
|
{
|
return atomic_read(&kctx->refcount);
|
}
|
|
/**
|
* kbase_js_foreach_ctx_job(): - Call a function on all jobs in context
|
* @kctx: Pointer to context.
|
* @callback: Pointer to function to call for each job.
|
*
|
* Call a function on all jobs belonging to a non-queued, non-running
|
* context, and detach the jobs from the context as it goes.
|
*
|
* Due to the locks that might be held at the time of the call, the callback
|
* may need to defer work on a workqueue to complete its actions (e.g. when
|
* cancelling jobs)
|
*
|
* Atoms will be removed from the queue, so this must only be called when
|
* cancelling jobs (which occurs as part of context destruction).
|
*
|
* The locking conditions on the caller are as follows:
|
* - it will be holding kbasep_js_kctx_info::ctx::jsctx_mutex.
|
*/
|
static void kbase_js_foreach_ctx_job(struct kbase_context *kctx,
|
kbasep_js_ctx_job_cb callback)
|
{
|
struct kbase_device *kbdev;
|
struct kbasep_js_device_data *js_devdata;
|
unsigned long flags;
|
u32 js;
|
|
kbdev = kctx->kbdev;
|
js_devdata = &kbdev->js_data;
|
|
spin_lock_irqsave(&kbdev->hwaccess_lock, flags);
|
|
KBASE_TRACE_ADD_REFCOUNT(kbdev, JS_POLICY_FOREACH_CTX_JOBS, kctx, NULL,
|
0u, trace_get_refcnt(kbdev, kctx));
|
|
/* Invoke callback on jobs on each slot in turn */
|
for (js = 0; js < kbdev->gpu_props.num_job_slots; js++)
|
jsctx_queue_foreach(kctx, js, callback);
|
|
spin_unlock_irqrestore(&kbdev->hwaccess_lock, flags);
|
}
|
